Drop Snow codec

Snow is a toy codec with no real-world use and horrible code.

21 files changed, 27 insertions, 5957 deletions

diff --git a/libavcodec/Makefile b/libavcodec/Makefile
index 1ae17cdd0d..a4eebb8409 100644
--- a/libavcodec/Makefile
+++ b/libavcodec/Makefile
@@ -37,7 +37,6 @@ OBJS = allcodecs.o                                                      \
 OBJS-$(CONFIG_AANDCTTABLES)            += aandcttab.o
 OBJS-$(CONFIG_AC3DSP)                  += ac3dsp.o
 OBJS-$(CONFIG_DCT)                     += dct.o dct32_fixed.o dct32_float.o
-OBJS-$(CONFIG_DWT)                     += dwt.o
 OBJS-$(CONFIG_DXVA2)                   += dxva2.o
 OBJS-$(CONFIG_ENCODERS)                += faandct.o jfdctfst.o jfdctint.o
 OBJS-$(CONFIG_ERROR_RESILIENCE)        += error_resilience.o
@@ -335,9 +334,6 @@ OBJS-$(CONFIG_SIPR_DECODER)            += sipr.o acelp_pitch_delay.o \
 OBJS-$(CONFIG_SMACKAUD_DECODER)        += smacker.o
 OBJS-$(CONFIG_SMACKER_DECODER)         += smacker.o
 OBJS-$(CONFIG_SMC_DECODER)             += smc.o
-OBJS-$(CONFIG_SNOW_DECODER)            += snowdec.o snow.o
-OBJS-$(CONFIG_SNOW_ENCODER)            += snowenc.o snow.o              \
-                                          h263.o ituh263enc.o
 OBJS-$(CONFIG_SOL_DPCM_DECODER)        += dpcm.o
 OBJS-$(CONFIG_SP5X_DECODER)            += sp5xdec.o mjpegdec.o mjpeg.o
 OBJS-$(CONFIG_SRT_DECODER)             += srtdec.o ass.o
diff --git a/libavcodec/allcodecs.c b/libavcodec/allcodecs.c
index 5786719692..ee664e4272 100644
--- a/libavcodec/allcodecs.c
+++ b/libavcodec/allcodecs.c
@@ -212,7 +212,6 @@ void avcodec_register_all(void)
     REGISTER_ENCDEC (SGI,               sgi);
     REGISTER_DECODER(SMACKER,           smacker);
     REGISTER_DECODER(SMC,               smc);
-    REGISTER_ENCDEC (SNOW,              snow);
     REGISTER_DECODER(SP5X,              sp5x);
     REGISTER_ENCDEC (SUNRAST,           sunrast);
     REGISTER_ENCDEC (SVQ1,              svq1);
diff --git a/libavcodec/avcodec.h b/libavcodec/avcodec.h
index e6b8ec626f..e57170b509 100644
--- a/libavcodec/avcodec.h
+++ b/libavcodec/avcodec.h
@@ -152,7 +152,9 @@ enum AVCodecID {
     AV_CODEC_ID_MSZH,
     AV_CODEC_ID_ZLIB,
     AV_CODEC_ID_QTRLE,
+#if FF_API_SNOW
     AV_CODEC_ID_SNOW,
+#endif
     AV_CODEC_ID_TSCC,
     AV_CODEC_ID_ULTI,
     AV_CODEC_ID_QDRAW,
@@ -518,7 +520,9 @@ enum Motion_Est_ID {
     ME_X1,          ///< reserved for experiments
     ME_HEX,         ///< hexagon based search
     ME_UMH,         ///< uneven multi-hexagon search
+#if FF_API_SNOW
     ME_ITER,        ///< iterative search
+#endif
     ME_TESA,        ///< transformed exhaustive search algorithm
 };
 
@@ -1535,7 +1539,7 @@ typedef struct AVCodecContext {
     /**
      * Motion estimation algorithm used for video coding.
      * 1 (zero), 2 (full), 3 (log), 4 (phods), 5 (epzs), 6 (x1), 7 (hex),
-     * 8 (umh), 9 (iter), 10 (tesa) [7, 8, 10 are x264 specific, 9 is snow specific]
+     * 8 (umh), 10 (tesa) [7, 8, 10 are x264 specific]
      * - encoding: MUST be set by user.
      * - decoding: unused
      */
@@ -1758,8 +1762,10 @@ typedef struct AVCodecContext {
 #define FF_CMP_VSAD   8
 #define FF_CMP_VSSE   9
 #define FF_CMP_NSSE   10
+#if FF_API_SNOW
 #define FF_CMP_W53    11
 #define FF_CMP_W97    12
+#endif
 #define FF_CMP_DCTMAX 13
 #define FF_CMP_DCT264 14
 #define FF_CMP_CHROMA 256
diff --git a/libavcodec/codec_desc.c b/libavcodec/codec_desc.c
index 0400c314e4..77b3653312 100644
--- a/libavcodec/codec_desc.c
+++ b/libavcodec/codec_desc.c
@@ -419,13 +419,6 @@ static const AVCodecDescriptor codec_descriptors[] = {
         .props     = AV_CODEC_PROP_LOSSLESS,
     },
     {
-        .id        = AV_CODEC_ID_SNOW,
-        .type      = AVMEDIA_TYPE_VIDEO,
-        .name      = "snow",
-        .long_name = NULL_IF_CONFIG_SMALL("Snow"),
-        .props     = AV_CODEC_PROP_LOSSY | AV_CODEC_PROP_LOSSLESS,
-    },
-    {
         .id        = AV_CODEC_ID_TSCC,
         .type      = AVMEDIA_TYPE_VIDEO,
         .name      = "tscc",
diff --git a/libavcodec/dsputil.c b/libavcodec/dsputil.c
index 4696bc7980..d297b8a738 100644
--- a/libavcodec/dsputil.c
+++ b/libavcodec/dsputil.c
@@ -1784,14 +1784,6 @@ void ff_set_cmp(DSPContext* c, me_cmp_func *cmp, int type){
         case FF_CMP_NSSE:
             cmp[i]= c->nsse[i];
             break;
-#if CONFIG_DWT
-        case FF_CMP_W53:
-            cmp[i]= c->w53[i];
-            break;
-        case FF_CMP_W97:
-            cmp[i]= c->w97[i];
-            break;
-#endif
         default:
             av_log(NULL, AV_LOG_ERROR,"internal error in cmp function selection\n");
         }
@@ -2820,9 +2812,6 @@ av_cold void ff_dsputil_init(DSPContext* c, AVCodecContext *avctx)
     c->vsse[5]= vsse_intra8_c;
     c->nsse[0]= nsse16_c;
     c->nsse[1]= nsse8_c;
-#if CONFIG_DWT
-    ff_dsputil_init_dwt(c);
-#endif
 
     c->ssd_int8_vs_int16 = ssd_int8_vs_int16_c;
 
diff --git a/libavcodec/dsputil.h b/libavcodec/dsputil.h
index 57c8bebb63..4749be9b54 100644
--- a/libavcodec/dsputil.h
+++ b/libavcodec/dsputil.h
@@ -231,8 +231,6 @@ typedef struct DSPContext {
     me_cmp_func vsad[6];
     me_cmp_func vsse[6];
     me_cmp_func nsse[6];
-    me_cmp_func w53[6];
-    me_cmp_func w97[6];
     me_cmp_func dct_max[6];
     me_cmp_func dct264_sad[6];
 
@@ -543,10 +541,6 @@ static inline int get_penalty_factor(int lambda, int lambda2, int type){
         return lambda>>FF_LAMBDA_SHIFT;
     case FF_CMP_DCT:
         return (3*lambda)>>(FF_LAMBDA_SHIFT+1);
-    case FF_CMP_W53:
-        return (4*lambda)>>(FF_LAMBDA_SHIFT);
-    case FF_CMP_W97:
-        return (2*lambda)>>(FF_LAMBDA_SHIFT);
     case FF_CMP_SATD:
     case FF_CMP_DCT264:
         return (2*lambda)>>FF_LAMBDA_SHIFT;
@@ -568,8 +562,6 @@ void ff_dsputil_init_ppc(DSPContext* c, AVCodecContext *avctx);
 void ff_dsputil_init_sh4(DSPContext* c, AVCodecContext *avctx);
 void ff_dsputil_init_vis(DSPContext* c, AVCodecContext *avctx);
 
-void ff_dsputil_init_dwt(DSPContext *c);
-
 #if (ARCH_ARM && HAVE_NEON) || ARCH_PPC || HAVE_MMX
 #   define STRIDE_ALIGN 16
 #else
diff --git a/libavcodec/dwt.c b/libavcodec/dwt.c
deleted file mode 100644
index 93cf2c6957..0000000000
--- a/libavcodec/dwt.c
+++ /dev/null
@@ -1,861 +0,0 @@
-/*
- * Copyright (C) 2004-2010 Michael Niedermayer <michaelni@gmx.at>
- *
- * This file is part of Libav.
- *
- * Libav is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * Libav is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with Libav; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-#include "libavutil/attributes.h"
-#include "libavutil/common.h"
-#include "dsputil.h"
-#include "dwt.h"
-
-int ff_slice_buffer_init(slice_buffer *buf, int line_count,
-                         int max_allocated_lines, int line_width,
-                         IDWTELEM *base_buffer)
-{
-    int i;
-
-    buf->base_buffer = base_buffer;
-    buf->line_count  = line_count;
-    buf->line_width  = line_width;
-    buf->data_count  = max_allocated_lines;
-    buf->line        = av_mallocz(sizeof(IDWTELEM *) * line_count);
-    if (!buf->line)
-        return AVERROR(ENOMEM);
-    buf->data_stack  = av_malloc(sizeof(IDWTELEM *) * max_allocated_lines);
-    if (!buf->data_stack) {
-        av_free(buf->line);
-        return AVERROR(ENOMEM);
-    }
-
-    for (i = 0; i < max_allocated_lines; i++) {
-        buf->data_stack[i] = av_malloc(sizeof(IDWTELEM) * line_width);
-        if (!buf->data_stack[i]) {
-            for (i--; i >=0; i--)
-                av_free(buf->data_stack[i]);
-            av_free(buf->data_stack);
-            av_free(buf->line);
-            return AVERROR(ENOMEM);
-        }
-    }
-
-    buf->data_stack_top = max_allocated_lines - 1;
-    return 0;
-}
-
-IDWTELEM *ff_slice_buffer_load_line(slice_buffer *buf, int line)
-{
-    IDWTELEM *buffer;
-
-    assert(buf->data_stack_top >= 0);
-//  assert(!buf->line[line]);
-    if (buf->line[line])
-        return buf->line[line];
-
-    buffer = buf->data_stack[buf->data_stack_top];
-    buf->data_stack_top--;
-    buf->line[line] = buffer;
-
-    return buffer;
-}
-
-void ff_slice_buffer_release(slice_buffer *buf, int line)
-{
-    IDWTELEM *buffer;
-
-    assert(line >= 0 && line < buf->line_count);
-    assert(buf->line[line]);
-
-    buffer = buf->line[line];
-    buf->data_stack_top++;
-    buf->data_stack[buf->data_stack_top] = buffer;
-    buf->line[line]                      = NULL;
-}
-
-void ff_slice_buffer_flush(slice_buffer *buf)
-{
-    int i;
-    for (i = 0; i < buf->line_count; i++)
-        if (buf->line[i])
-            ff_slice_buffer_release(buf, i);
-}
-
-void ff_slice_buffer_destroy(slice_buffer *buf)
-{
-    int i;
-    ff_slice_buffer_flush(buf);
-
-    for (i = buf->data_count - 1; i >= 0; i--)
-        av_freep(&buf->data_stack[i]);
-    av_freep(&buf->data_stack);
-    av_freep(&buf->line);
-}
-
-static inline int mirror(int v, int m)
-{
-    while ((unsigned)v > (unsigned)m) {
-        v = -v;
-        if (v < 0)
-            v += 2 * m;
-    }
-    return v;
-}
-
-static av_always_inline void lift(DWTELEM *dst, DWTELEM *src, DWTELEM *ref,
-                                  int dst_step, int src_step, int ref_step,
-                                  int width, int mul, int add, int shift,
-                                  int highpass, int inverse)
-{
-    const int mirror_left  = !highpass;
-    const int mirror_right = (width & 1) ^ highpass;
-    const int w            = (width >> 1) - 1 + (highpass & width);
-    int i;
-
-#define LIFT(src, ref, inv) ((src) + ((inv) ? -(ref) : +(ref)))
-    if (mirror_left) {
-        dst[0] = LIFT(src[0], ((mul * 2 * ref[0] + add) >> shift), inverse);
-        dst   += dst_step;
-        src   += src_step;
-    }
-
-    for (i = 0; i < w; i++)
-        dst[i * dst_step] = LIFT(src[i * src_step],
-                                 ((mul * (ref[i * ref_step] +
-                                          ref[(i + 1) * ref_step]) +
-                                   add) >> shift),
-                                 inverse);
-
-    if (mirror_right)
-        dst[w * dst_step] = LIFT(src[w * src_step],
-                                 ((mul * 2 * ref[w * ref_step] + add) >> shift),
-                                 inverse);
-}
-
-static av_always_inline void liftS(DWTELEM *dst, DWTELEM *src, DWTELEM *ref,
-                                   int dst_step, int src_step, int ref_step,
-                                   int width, int mul, int add, int shift,
-                                   int highpass, int inverse)
-{
-    const int mirror_left  = !highpass;
-    const int mirror_right = (width & 1) ^ highpass;
-    const int w            = (width >> 1) - 1 + (highpass & width);
-    int i;
-
-    assert(shift == 4);
-#define LIFTS(src, ref, inv)                                            \
-    ((inv) ? (src) + (((ref) + 4 * (src)) >> shift)                     \
-           : -((-16 * (src) + (ref) + add /                             \
-                4 + 1 + (5 << 25)) / (5 * 4) - (1 << 23)))
-    if (mirror_left) {
-        dst[0] = LIFTS(src[0], mul * 2 * ref[0] + add, inverse);
-        dst   += dst_step;
-        src   += src_step;
-    }
-
-    for (i = 0; i < w; i++)
-        dst[i * dst_step] = LIFTS(src[i * src_step],
-                                  mul * (ref[i * ref_step] +
-                                         ref[(i + 1) * ref_step]) + add,
-                                  inverse);
-
-    if (mirror_right)
-        dst[w * dst_step] = LIFTS(src[w * src_step],
-                                  mul * 2 * ref[w * ref_step] + add,
-                                  inverse);
-}
-
-static void horizontal_decompose53i(DWTELEM *b, DWTELEM *temp, int width)
-{
-    const int width2 = width >> 1;
-    int x;
-    const int w2 = (width + 1) >> 1;
-
-    for (x = 0; x < width2; x++) {
-        temp[x]      = b[2 * x];
-        temp[x + w2] = b[2 * x + 1];
-    }
-    if (width & 1)
-        temp[x] = b[2 * x];
-    lift(b + w2, temp + w2, temp,   1, 1, 1, width, -1, 0, 1, 1, 0);
-    lift(b,      temp,      b + w2, 1, 1, 1, width,  1, 2, 2, 0, 0);
-}
-
-static void vertical_decompose53iH0(DWTELEM *b0, DWTELEM *b1, DWTELEM *b2,
-                                    int width)
-{
-    int i;
-
-    for (i = 0; i < width; i++)
-        b1[i] -= (b0[i] + b2[i]) >> 1;
-}
-
-static void vertical_decompose53iL0(DWTELEM *b0, DWTELEM *b1, DWTELEM *b2,
-                                    int width)
-{
-    int i;
-
-    for (i = 0; i < width; i++)
-        b1[i] += (b0[i] + b2[i] + 2) >> 2;
-}
-
-static void spatial_decompose53i(DWTELEM *buffer, DWTELEM *temp,
-                                 int width, int height, int stride)
-{
-    int y;
-    DWTELEM *b0 = buffer + mirror(-2 - 1, height - 1) * stride;
-    DWTELEM *b1 = buffer + mirror(-2,     height - 1) * stride;
-
-    for (y = -2; y < height; y += 2) {
-        DWTELEM *b2 = buffer + mirror(y + 1, height - 1) * stride;
-        DWTELEM *b3 = buffer + mirror(y + 2, height - 1) * stride;
-
-        if (y + 1 < (unsigned)height)
-            horizontal_decompose53i(b2, temp, width);
-        if (y + 2 < (unsigned)height)
-            horizontal_decompose53i(b3, temp, width);
-
-        if (y + 1 < (unsigned)height)
-            vertical_decompose53iH0(b1, b2, b3, width);
-        if (y + 0 < (unsigned)height)
-            vertical_decompose53iL0(b0, b1, b2, width);
-
-        b0 = b2;
-        b1 = b3;
-    }
-}
-
-static void horizontal_decompose97i(DWTELEM *b, DWTELEM *temp, int width)
-{
-    const int w2 = (width + 1) >> 1;
-
-    lift(temp + w2, b + 1, b,         1, 2, 2, width, W_AM, W_AO, W_AS, 1, 1);
-    liftS(temp,     b,     temp + w2, 1, 2, 1, width, W_BM, W_BO, W_BS, 0, 0);
-    lift(b + w2, temp + w2, temp,     1, 1, 1, width, W_CM, W_CO, W_CS, 1, 0);
-    lift(b,      temp,      b + w2,   1, 1, 1, width, W_DM, W_DO, W_DS, 0, 0);
-}
-
-static void vertical_decompose97iH0(DWTELEM *b0, DWTELEM *b1, DWTELEM *b2,
-                                    int width)
-{
-    int i;
-
-    for (i = 0; i < width; i++)
-        b1[i] -= (W_AM * (b0[i] + b2[i]) + W_AO) >> W_AS;
-}
-
-static void vertical_decompose97iH1(DWTELEM *b0, DWTELEM *b1, DWTELEM *b2,
-                                    int width)
-{
-    int i;
-
-    for (i = 0; i < width; i++)
-        b1[i] += (W_CM * (b0[i] + b2[i]) + W_CO) >> W_CS;
-}
-
-static void vertical_decompose97iL0(DWTELEM *b0, DWTELEM *b1, DWTELEM *b2,
-                                    int width)
-{
-    int i;
-
-    for (i = 0; i < width; i++)
-        b1[i] = (16 * 4 * b1[i] - 4 * (b0[i] + b2[i]) + W_BO * 5 + (5 << 27)) /
-                (5 * 16) - (1 << 23);
-}
-
-static void vertical_decompose97iL1(DWTELEM *b0, DWTELEM *b1, DWTELEM *b2,
-                                    int width)
-{
-    int i;
-
-    for (i = 0; i < width; i++)
-        b1[i] += (W_DM * (b0[i] + b2[i]) + W_DO) >> W_DS;
-}
-
-static void spatial_decompose97i(DWTELEM *buffer, DWTELEM *temp,
-                                 int width, int height, int stride)
-{
-    int y;
-    DWTELEM *b0 = buffer + mirror(-4 - 1, height - 1) * stride;
-    DWTELEM *b1 = buffer + mirror(-4,     height - 1) * stride;
-    DWTELEM *b2 = buffer + mirror(-4 + 1, height - 1) * stride;
-    DWTELEM *b3 = buffer + mirror(-4 + 2, height - 1) * stride;
-
-    for (y = -4; y < height; y += 2) {
-        DWTELEM *b4 = buffer + mirror(y + 3, height - 1) * stride;
-        DWTELEM *b5 = buffer + mirror(y + 4, height - 1) * stride;
-
-        if (y + 3 < (unsigned)height)
-            horizontal_decompose97i(b4, temp, width);
-        if (y + 4 < (unsigned)height)
-            horizontal_decompose97i(b5, temp, width);
-
-        if (y + 3 < (unsigned)height)
-            vertical_decompose97iH0(b3, b4, b5, width);
-        if (y + 2 < (unsigned)height)
-            vertical_decompose97iL0(b2, b3, b4, width);
-        if (y + 1 < (unsigned)height)
-            vertical_decompose97iH1(b1, b2, b3, width);
-        if (y + 0 < (unsigned)height)
-            vertical_decompose97iL1(b0, b1, b2, width);
-
-        b0 = b2;
-        b1 = b3;
-        b2 = b4;
-        b3 = b5;
-    }
-}
-
-void ff_spatial_dwt(DWTELEM *buffer, DWTELEM *temp, int width, int height,
-                    int stride, int type, int decomposition_count)
-{
-    int level;
-
-    for (level = 0; level < decomposition_count; level++) {
-        switch (type) {
-        case DWT_97:
-            spatial_decompose97i(buffer, temp,
-                                 width >> level, height >> level,
-                                 stride << level);
-            break;
-        case DWT_53:
-            spatial_decompose53i(buffer, temp,
-                                 width >> level, height >> level,
-                                 stride << level);
-            break;
-        }
-    }
-}
-
-static void horizontal_compose53i(IDWTELEM *b, IDWTELEM *temp, int width)
-{
-    const int width2 = width >> 1;
-    const int w2     = (width + 1) >> 1;
-    int x;
-
-    for (x = 0; x < width2; x++) {
-        temp[2 * x]     = b[x];
-        temp[2 * x + 1] = b[x + w2];
-    }
-    if (width & 1)
-        temp[2 * x] = b[x];
-
-    b[0] = temp[0] - ((temp[1] + 1) >> 1);
-    for (x = 2; x < width - 1; x += 2) {
-        b[x]     = temp[x]     - ((temp[x - 1] + temp[x + 1] + 2) >> 2);
-        b[x - 1] = temp[x - 1] + ((b[x - 2]    + b[x]        + 1) >> 1);
-    }
-    if (width & 1) {
-        b[x]     = temp[x]     - ((temp[x - 1]     + 1) >> 1);
-        b[x - 1] = temp[x - 1] + ((b[x - 2] + b[x] + 1) >> 1);
-    } else
-        b[x - 1] = temp[x - 1] + b[x - 2];
-}
-
-static void vertical_compose53iH0(IDWTELEM *b0, IDWTELEM *b1, IDWTELEM *b2,
-                                  int width)
-{
-    int i;
-
-    for (i = 0; i < width; i++)
-        b1[i] += (b0[i] + b2[i]) >> 1;
-}
-
-static void vertical_compose53iL0(IDWTELEM *b0, IDWTELEM *b1, IDWTELEM *b2,
-                                  int width)
-{
-    int i;
-
-    for (i = 0; i < width; i++)
-        b1[i] -= (b0[i] + b2[i] + 2) >> 2;
-}
-
-static void spatial_compose53i_buffered_init(DWTCompose *cs, slice_buffer *sb,
-                                             int height, int stride_line)
-{
-    cs->b0 = slice_buffer_get_line(sb,
-                                   mirror(-1 - 1, height - 1) * stride_line);
-    cs->b1 = slice_buffer_get_line(sb, mirror(-1, height - 1) * stride_line);
-    cs->y  = -1;
-}
-
-static void spatial_compose53i_init(DWTCompose *cs, IDWTELEM *buffer,
-                                    int height, int stride)
-{
-    cs->b0 = buffer + mirror(-1 - 1, height - 1) * stride;
-    cs->b1 = buffer + mirror(-1,     height - 1) * stride;
-    cs->y  = -1;
-}
-
-static void spatial_compose53i_dy_buffered(DWTCompose *cs, slice_buffer *sb,
-                                           IDWTELEM *temp,
-                                           int width, int height,
-                                           int stride_line)
-{
-    int y = cs->y;
-
-    IDWTELEM *b0 = cs->b0;
-    IDWTELEM *b1 = cs->b1;
-    IDWTELEM *b2 = slice_buffer_get_line(sb,
-                                         mirror(y + 1, height - 1) *
-                                         stride_line);
-    IDWTELEM *b3 = slice_buffer_get_line(sb,
-                                         mirror(y + 2, height - 1) *
-                                         stride_line);
-
-    if (y + 1 < (unsigned)height && y < (unsigned)height) {
-        int x;
-
-        for (x = 0; x < width; x++) {
-            b2[x] -= (b1[x] + b3[x] + 2) >> 2;
-            b1[x] += (b0[x] + b2[x])     >> 1;
-        }
-    } else {
-        if (y + 1 < (unsigned)height)
-            vertical_compose53iL0(b1, b2, b3, width);
-        if (y + 0 < (unsigned)height)
-            vertical_compose53iH0(b0, b1, b2, width);
-    }
-
-    if (y - 1 < (unsigned)height)
-        horizontal_compose53i(b0, temp, width);
-    if (y + 0 < (unsigned)height)
-        horizontal_compose53i(b1, temp, width);
-
-    cs->b0  = b2;
-    cs->b1  = b3;
-    cs->y  += 2;
-}
-
-static void spatial_compose53i_dy(DWTCompose *cs, IDWTELEM *buffer,
-                                  IDWTELEM *temp, int width, int height,
-                                  int stride)
-{
-    int y        = cs->y;
-    IDWTELEM *b0 = cs->b0;
-    IDWTELEM *b1 = cs->b1;
-    IDWTELEM *b2 = buffer + mirror(y + 1, height - 1) * stride;
-    IDWTELEM *b3 = buffer + mirror(y + 2, height - 1) * stride;
-
-    if (y + 1 < (unsigned)height)
-        vertical_compose53iL0(b1, b2, b3, width);
-    if (y + 0 < (unsigned)height)
-        vertical_compose53iH0(b0, b1, b2, width);
-
-    if (y - 1 < (unsigned)height)
-        horizontal_compose53i(b0, temp, width);
-    if (y + 0 < (unsigned)height)
-        horizontal_compose53i(b1, temp, width);
-
-    cs->b0  = b2;
-    cs->b1  = b3;
-    cs->y  += 2;
-}
-
-void ff_snow_horizontal_compose97i(IDWTELEM *b, IDWTELEM *temp, int width)
-{
-    const int w2 = (width + 1) >> 1;
-    int x;
-
-    temp[0] = b[0] - ((3 * b[w2] + 2) >> 2);
-    for (x = 1; x < (width >> 1); x++) {
-        temp[2 * x]     = b[x] - ((3 * (b[x + w2 - 1] + b[x + w2]) + 4) >> 3);
-        temp[2 * x - 1] = b[x + w2 - 1] - temp[2 * x - 2] - temp[2 * x];
-    }
-    if (width & 1) {
-        temp[2 * x]     = b[x] - ((3 * b[x + w2 - 1] + 2) >> 2);
-        temp[2 * x - 1] = b[x + w2 - 1] - temp[2 * x - 2] - temp[2 * x];
-    } else
-        temp[2 * x - 1] = b[x + w2 - 1] - 2 * temp[2 * x - 2];
-
-    b[0] = temp[0] + ((2 * temp[0] + temp[1] + 4) >> 3);
-    for (x = 2; x < width - 1; x += 2) {
-        b[x]     = temp[x] + ((4 * temp[x] + temp[x - 1] + temp[x + 1] + 8) >> 4);
-        b[x - 1] = temp[x - 1] + ((3 * (b[x - 2] + b[x])) >> 1);
-    }
-    if (width & 1) {
-        b[x]     = temp[x] + ((2 * temp[x] + temp[x - 1] + 4) >> 3);
-        b[x - 1] = temp[x - 1] + ((3 * (b[x - 2] + b[x])) >> 1);
-    } else
-        b[x - 1] = temp[x - 1] + 3 * b[x - 2];
-}
-
-static void vertical_compose97iH0(IDWTELEM *b0, IDWTELEM *b1, IDWTELEM *b2,
-                                  int width)
-{
-    int i;
-
-    for (i = 0; i < width; i++)
-        b1[i] += (W_AM * (b0[i] + b2[i]) + W_AO) >> W_AS;
-}
-
-static void vertical_compose97iH1(IDWTELEM *b0, IDWTELEM *b1, IDWTELEM *b2,
-                                  int width)
-{
-    int i;
-
-    for (i = 0; i < width; i++)
-        b1[i] -= (W_CM * (b0[i] + b2[i]) + W_CO) >> W_CS;
-}
-
-static void vertical_compose97iL0(IDWTELEM *b0, IDWTELEM *b1, IDWTELEM *b2,
-                                  int width)
-{
-    int i;
-
-    for (i = 0; i < width; i++)
-        b1[i] += (W_BM * (b0[i] + b2[i]) + 4 * b1[i] + W_BO) >> W_BS;
-}
-
-static void vertical_compose97iL1(IDWTELEM *b0, IDWTELEM *b1, IDWTELEM *b2,
-                                  int width)
-{
-    int i;
-
-    for (i = 0; i < width; i++)
-        b1[i] -= (W_DM * (b0[i] + b2[i]) + W_DO) >> W_DS;
-}
-
-void ff_snow_vertical_compose97i(IDWTELEM *b0, IDWTELEM *b1, IDWTELEM *b2,
-                                 IDWTELEM *b3, IDWTELEM *b4, IDWTELEM *b5,
-                                 int width)
-{
-    int i;
-
-    for (i = 0; i < width; i++) {
-        b4[i] -= (W_DM * (b3[i] + b5[i]) + W_DO) >> W_DS;
-        b3[i] -= (W_CM * (b2[i] + b4[i]) + W_CO) >> W_CS;
-        b2[i] += (W_BM * (b1[i] + b3[i]) + 4 * b2[i] + W_BO) >> W_BS;
-        b1[i] += (W_AM * (b0[i] + b2[i]) + W_AO) >> W_AS;
-    }
-}
-
-static void spatial_compose97i_buffered_init(DWTCompose *cs, slice_buffer *sb,
-                                             int height, int stride_line)
-{
-    cs->b0 = slice_buffer_get_line(sb, mirror(-3 - 1, height - 1) * stride_line);
-    cs->b1 = slice_buffer_get_line(sb, mirror(-3,     height - 1) * stride_line);
-    cs->b2 = slice_buffer_get_line(sb, mirror(-3 + 1, height - 1) * stride_line);
-    cs->b3 = slice_buffer_get_line(sb, mirror(-3 + 2, height - 1) * stride_line);
-    cs->y  = -3;
-}
-
-static void spatial_compose97i_init(DWTCompose *cs, IDWTELEM *buffer, int height,
-                                    int stride)
-{
-    cs->b0 = buffer + mirror(-3 - 1, height - 1) * stride;
-    cs->b1 = buffer + mirror(-3,     height - 1) * stride;
-    cs->b2 = buffer + mirror(-3 + 1, height - 1) * stride;
-    cs->b3 = buffer + mirror(-3 + 2, height - 1) * stride;
-    cs->y  = -3;
-}
-
-static void spatial_compose97i_dy_buffered(DWTContext *dsp, DWTCompose *cs,
-                                           slice_buffer * sb, IDWTELEM *temp,
-                                           int width, int height,
-                                           int stride_line)
-{
-    int y = cs->y;
-
-    IDWTELEM *b0 = cs->b0;
-    IDWTELEM *b1 = cs->b1;
-    IDWTELEM *b2 = cs->b2;
-    IDWTELEM *b3 = cs->b3;
-    IDWTELEM *b4 = slice_buffer_get_line(sb,
-                                         mirror(y + 3, height - 1) *
-                                         stride_line);
-    IDWTELEM *b5 = slice_buffer_get_line(sb,
-                                         mirror(y + 4, height - 1) *
-                                         stride_line);
-
-    if (y > 0 && y + 4 < height) {
-        dsp->vertical_compose97i(b0, b1, b2, b3, b4, b5, width);
-    } else {
-        if (y + 3 < (unsigned)height)
-            vertical_compose97iL1(b3, b4, b5, width);
-        if (y + 2 < (unsigned)height)
-            vertical_compose97iH1(b2, b3, b4, width);
-        if (y + 1 < (unsigned)height)
-            vertical_compose97iL0(b1, b2, b3, width);
-        if (y + 0 < (unsigned)height)
-            vertical_compose97iH0(b0, b1, b2, width);
-    }
-
-    if (y - 1 < (unsigned)height)
-        dsp->horizontal_compose97i(b0, temp, width);
-    if (y + 0 < (unsigned)height)
-        dsp->horizontal_compose97i(b1, temp, width);
-
-    cs->b0  = b2;
-    cs->b1  = b3;
-    cs->b2  = b4;
-    cs->b3  = b5;
-    cs->y  += 2;
-}
-
-static void spatial_compose97i_dy(DWTCompose *cs, IDWTELEM *buffer,
-                                  IDWTELEM *temp, int width, int height,
-                                  int stride)
-{
-    int y        = cs->y;
-    IDWTELEM *b0 = cs->b0;
-    IDWTELEM *b1 = cs->b1;
-    IDWTELEM *b2 = cs->b2;
-    IDWTELEM *b3 = cs->b3;
-    IDWTELEM *b4 = buffer + mirror(y + 3, height - 1) * stride;
-    IDWTELEM *b5 = buffer + mirror(y + 4, height - 1) * stride;
-
-    if (y + 3 < (unsigned)height)
-        vertical_compose97iL1(b3, b4, b5, width);
-    if (y + 2 < (unsigned)height)
-        vertical_compose97iH1(b2, b3, b4, width);
-    if (y + 1 < (unsigned)height)
-        vertical_compose97iL0(b1, b2, b3, width);
-    if (y + 0 < (unsigned)height)
-        vertical_compose97iH0(b0, b1, b2, width);
-
-    if (y - 1 < (unsigned)height)
-        ff_snow_horizontal_compose97i(b0, temp, width);
-    if (y + 0 < (unsigned)height)
-        ff_snow_horizontal_compose97i(b1, temp, width);
-
-    cs->b0  = b2;
-    cs->b1  = b3;
-    cs->b2  = b4;
-    cs->b3  = b5;
-    cs->y  += 2;
-}
-
-void ff_spatial_idwt_buffered_init(DWTCompose *cs, slice_buffer *sb, int width,
-                                   int height, int stride_line, int type,
-                                   int decomposition_count)
-{
-    int level;
-    for (level = decomposition_count - 1; level >= 0; level--) {
-        switch (type) {
-        case DWT_97:
-            spatial_compose97i_buffered_init(cs + level, sb, height >> level,
-                                             stride_line << level);
-            break;
-        case DWT_53:
-            spatial_compose53i_buffered_init(cs + level, sb, height >> level,
-                                             stride_line << level);
-            break;
-        }
-    }
-}
-
-void ff_spatial_idwt_buffered_slice(DWTContext *dsp, DWTCompose *cs,
-                                    slice_buffer *slice_buf, IDWTELEM *temp,
-                                    int width, int height, int stride_line,
-                                    int type, int decomposition_count, int y)
-{
-    const int support = type == 1 ? 3 : 5;
-    int level;
-    if (type == 2)
-        return;
-
-    for (level = decomposition_count - 1; level >= 0; level--)
-        while (cs[level].y <= FFMIN((y >> level) + support, height >> level)) {
-            switch (type) {
-            case DWT_97:
-                spatial_compose97i_dy_buffered(dsp, cs + level, slice_buf, temp,
-                                               width >> level,
-                                               height >> level,
-                                               stride_line << level);
-                break;
-            case DWT_53:
-                spatial_compose53i_dy_buffered(cs + level, slice_buf, temp,
-                                               width >> level,
-                                               height >> level,
-                                               stride_line << level);
-                break;
-            }
-        }
-}
-
-static void ff_spatial_idwt_init(DWTCompose *cs, IDWTELEM *buffer, int width,
-                                 int height, int stride, int type,
-                                 int decomposition_count)
-{
-    int level;
-    for (level = decomposition_count - 1; level >= 0; level--) {
-        switch (type) {
-        case DWT_97:
-            spatial_compose97i_init(cs + level, buffer, height >> level,
-                                    stride << level);
-            break;
-        case DWT_53:
-            spatial_compose53i_init(cs + level, buffer, height >> level,
-                                    stride << level);
-            break;
-        }
-    }
-}
-
-static void ff_spatial_idwt_slice(DWTCompose *cs, IDWTELEM *buffer,
-                                  IDWTELEM *temp, int width, int height,
-                                  int stride, int type,
-                                  int decomposition_count, int y)
-{
-    const int support = type == 1 ? 3 : 5;
-    int level;
-    if (type == 2)
-        return;
-
-    for (level = decomposition_count - 1; level >= 0; level--)
-        while (cs[level].y <= FFMIN((y >> level) + support, height >> level)) {
-            switch (type) {
-            case DWT_97:
-                spatial_compose97i_dy(cs + level, buffer, temp, width >> level,
-                                      height >> level, stride << level);
-                break;
-            case DWT_53:
-                spatial_compose53i_dy(cs + level, buffer, temp, width >> level,
-                                      height >> level, stride << level);
-                break;
-            }
-        }
-}
-
-void ff_spatial_idwt(IDWTELEM *buffer, IDWTELEM *temp, int width, int height,
-                     int stride, int type, int decomposition_count)
-{
-    DWTCompose cs[MAX_DECOMPOSITIONS];
-    int y;
-    ff_spatial_idwt_init(cs, buffer, width, height, stride, type,
-                         decomposition_count);
-    for (y = 0; y < height; y += 4)
-        ff_spatial_idwt_slice(cs, buffer, temp, width, height, stride, type,
-                              decomposition_count, y);
-}
-
-static inline int w_c(void *v, uint8_t *pix1, uint8_t *pix2, int line_size,
-                      int w, int h, int type)
-{
-    int s, i, j;
-    const int dec_count = w == 8 ? 3 : 4;
-    int tmp[32 * 32], tmp2[32];
-    int level, ori;
-    static const int scale[2][2][4][4] = {
-        {
-            { // 9/7 8x8 dec=3
-                { 268, 239, 239, 213 },
-                { 0,   224, 224, 152 },
-                { 0,   135, 135, 110 },
-            },
-            { // 9/7 16x16 or 32x32 dec=4
-                { 344, 310, 310, 280 },
-                { 0,   320, 320, 228 },
-                { 0,   175, 175, 136 },
-                { 0,   129, 129, 102 },
-            }
-        },
-        {
-            { // 5/3 8x8 dec=3
-                { 275, 245, 245, 218 },
-                { 0,   230, 230, 156 },
-                { 0,   138, 138, 113 },
-            },
-            { // 5/3 16x16 or 32x32 dec=4
-                { 352, 317, 317, 286 },
-                { 0,   328, 328, 233 },
-                { 0,   180, 180, 140 },
-                { 0,   132, 132, 105 },
-            }
-        }
-    };
-
-    for (i = 0; i < h; i++) {
-        for (j = 0; j < w; j += 4) {
-            tmp[32 * i + j + 0] = (pix1[j + 0] - pix2[j + 0]) << 4;
-            tmp[32 * i + j + 1] = (pix1[j + 1] - pix2[j + 1]) << 4;
-            tmp[32 * i + j + 2] = (pix1[j + 2] - pix2[j + 2]) << 4;
-            tmp[32 * i + j + 3] = (pix1[j + 3] - pix2[j + 3]) << 4;
-        }
-        pix1 += line_size;
-        pix2 += line_size;
-    }
-
-    ff_spatial_dwt(tmp, tmp2, w, h, 32, type, dec_count);
-
-    s = 0;
-    assert(w == h);
-    for (level = 0; level < dec_count; level++)
-        for (ori = level ? 1 : 0; ori < 4; ori++) {
-            int size   = w >> (dec_count - level);
-            int sx     = (ori & 1) ? size : 0;
-            int stride = 32 << (dec_count - level);
-            int sy     = (ori & 2) ? stride >> 1 : 0;
-
-            for (i = 0; i < size; i++)
-                for (j = 0; j < size; j++) {
-                    int v = tmp[sx + sy + i * stride + j] *
-                            scale[type][dec_count - 3][level][ori];
-                    s += FFABS(v);
-                }
-        }
-    assert(s >= 0);
-    return s >> 9;
-}
-
-static int w53_8_c(void *v, uint8_t *pix1, uint8_t *pix2, int line_size, int h)
-{
-    return w_c(v, pix1, pix2, line_size, 8, h, 1);
-}
-
-static int w97_8_c(void *v, uint8_t *pix1, uint8_t *pix2, int line_size, int h)
-{
-    return w_c(v, pix1, pix2, line_size, 8, h, 0);
-}
-
-static int w53_16_c(void *v, uint8_t *pix1, uint8_t *pix2, int line_size, int h)
-{
-    return w_c(v, pix1, pix2, line_size, 16, h, 1);
-}
-
-static int w97_16_c(void *v, uint8_t *pix1, uint8_t *pix2, int line_size, int h)
-{
-    return w_c(v, pix1, pix2, line_size, 16, h, 0);
-}
-
-int ff_w53_32_c(void *v, uint8_t *pix1, uint8_t *pix2, int line_size, int h)
-{
-    return w_c(v, pix1, pix2, line_size, 32, h, 1);
-}
-
-int ff_w97_32_c(void *v, uint8_t *pix1, uint8_t *pix2, int line_size, int h)
-{
-    return w_c(v, pix1, pix2, line_size, 32, h, 0);
-}
-
-void ff_dsputil_init_dwt(DSPContext *c)
-{
-    c->w53[0] = w53_16_c;
-    c->w53[1] = w53_8_c;
-    c->w97[0] = w97_16_c;
-    c->w97[1] = w97_8_c;
-}
-
-void ff_dwt_init(DWTContext *c)
-{
-    c->vertical_compose97i   = ff_snow_vertical_compose97i;
-    c->horizontal_compose97i = ff_snow_horizontal_compose97i;
-    c->inner_add_yblock      = ff_snow_inner_add_yblock;
-
-    if (HAVE_MMX)
-        ff_dwt_init_x86(c);
-}
diff --git a/libavcodec/dwt.h b/libavcodec/dwt.h
deleted file mode 100644
index e06f3f9393..0000000000
--- a/libavcodec/dwt.h
+++ /dev/null
@@ -1,124 +0,0 @@
-/*
- * Copyright (C) 2004-2010 Michael Niedermayer <michaelni@gmx.at>
- *
- * This file is part of Libav.
- *
- * Libav is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * Libav is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with Libav; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-#ifndef AVCODEC_DWT_H
-#define AVCODEC_DWT_H
-
-#include <stdint.h>
-
-typedef int DWTELEM;
-typedef short IDWTELEM;
-
-typedef struct DWTCompose {
-    IDWTELEM *b0;
-    IDWTELEM *b1;
-    IDWTELEM *b2;
-    IDWTELEM *b3;
-    int y;
-} DWTCompose;
-
-/** Used to minimize the amount of memory used in order to
- *  optimize cache performance. **/
-typedef struct slice_buffer_s {
-    IDWTELEM **line;   ///< For use by idwt and predict_slices.
-    IDWTELEM **data_stack;   ///< Used for internal purposes.
-    int data_stack_top;
-    int line_count;
-    int line_width;
-    int data_count;
-    IDWTELEM *base_buffer;  ///< Buffer that this structure is caching.
-} slice_buffer;
-
-typedef struct DWTContext {
-    void (*vertical_compose97i)(IDWTELEM *b0, IDWTELEM *b1, IDWTELEM *b2,
-                                IDWTELEM *b3, IDWTELEM *b4, IDWTELEM *b5,
-                                int width);
-    void (*horizontal_compose97i)(IDWTELEM *b, IDWTELEM *temp, int width);
-    void (*inner_add_yblock)(const uint8_t *obmc, const int obmc_stride,
-                             uint8_t **block, int b_w, int b_h, int src_x,
-                             int src_y, int src_stride, slice_buffer *sb,
-                             int add, uint8_t *dst8);
-} DWTContext;
-
-#define MAX_DECOMPOSITIONS 8
-
-#define DWT_97 0
-#define DWT_53 1
-
-#define liftS lift
-#define W_AM 3
-#define W_AO 0
-#define W_AS 1
-
-#undef liftS
-#define W_BM 1
-#define W_BO 8
-#define W_BS 4
-
-#define W_CM 1
-#define W_CO 0
-#define W_CS 0
-
-#define W_DM 3
-#define W_DO 4
-#define W_DS 3
-
-#define slice_buffer_get_line(slice_buf, line_num)                          \
-    ((slice_buf)->line[line_num] ? (slice_buf)->line[line_num]              \
-                                 : ff_slice_buffer_load_line((slice_buf),   \
-                                                             (line_num)))
-
-int ff_slice_buffer_init(slice_buffer *buf, int line_count,
-                         int max_allocated_lines, int line_width,
-                         IDWTELEM *base_buffer);
-void ff_slice_buffer_release(slice_buffer *buf, int line);
-void ff_slice_buffer_flush(slice_buffer *buf);
-void ff_slice_buffer_destroy(slice_buffer *buf);
-IDWTELEM *ff_slice_buffer_load_line(slice_buffer *buf, int line);
-
-void ff_snow_vertical_compose97i(IDWTELEM *b0, IDWTELEM *b1, IDWTELEM *b2,
-                                 IDWTELEM *b3, IDWTELEM *b4, IDWTELEM *b5,
-                                 int width);
-void ff_snow_horizontal_compose97i(IDWTELEM *b, IDWTELEM *temp, int width);
-void ff_snow_inner_add_yblock(const uint8_t *obmc, const int obmc_stride,
-                              uint8_t **block, int b_w, int b_h, int src_x,
-                              int src_y, int src_stride, slice_buffer *sb,
-                              int add, uint8_t *dst8);
-
-int ff_w53_32_c(void *v, uint8_t *pix1, uint8_t *pix2, int line_size, int h);
-int ff_w97_32_c(void *v, uint8_t *pix1, uint8_t *pix2, int line_size, int h);
-
-void ff_spatial_dwt(int *buffer, int *temp, int width, int height, int stride,
-                    int type, int decomposition_count);
-
-void ff_spatial_idwt_buffered_init(DWTCompose *cs, slice_buffer *sb, int width,
-                                   int height, int stride_line, int type,
-                                   int decomposition_count);
-void ff_spatial_idwt_buffered_slice(DWTContext *dsp, DWTCompose *cs,
-                                    slice_buffer *slice_buf, IDWTELEM *temp,
-                                    int width, int height, int stride_line,
-                                    int type, int decomposition_count, int y);
-void ff_spatial_idwt(IDWTELEM *buffer, IDWTELEM *temp, int width, int height,
-                     int stride, int type, int decomposition_count);
-
-void ff_dwt_init(DWTContext *c);
-void ff_dwt_init_x86(DWTContext *c);
-
-#endif /* AVCODEC_DWT_H */
diff --git a/libavcodec/ivi_dsp.c b/libavcodec/ivi_dsp.c
index 3ffe84ab9e..dee6ff2953 100644
--- a/libavcodec/ivi_dsp.c
+++ b/libavcodec/ivi_dsp.c
@@ -28,7 +28,6 @@
 
 #include "avcodec.h"
 #include "dsputil.h"
-#include "dwt.h"
 #include "ivi_common.h"
 #include "ivi_dsp.h"
 
@@ -40,7 +39,7 @@ void ff_ivi_recompose53(const IVIPlaneDesc *plane, uint8_t *dst,
     int32_t         b0_1, b0_2, b1_1, b1_2, b1_3, b2_1, b2_2, b2_3, b2_4, b2_5, b2_6;
     int32_t         b3_1, b3_2, b3_3, b3_4, b3_5, b3_6, b3_7, b3_8, b3_9;
     int32_t         pitch, back_pitch;
-    const IDWTELEM *b0_ptr, *b1_ptr, *b2_ptr, *b3_ptr;
+    const short    *b0_ptr, *b1_ptr, *b2_ptr, *b3_ptr;
     const int       num_bands = 4;
 
     /* all bands should have the same pitch */
@@ -183,7 +182,7 @@ void ff_ivi_recompose_haar(const IVIPlaneDesc *plane, uint8_t *dst,
                            const int dst_pitch)
 {
     int             x, y, indx, b0, b1, b2, b3, p0, p1, p2, p3;
-    const IDWTELEM *b0_ptr, *b1_ptr, *b2_ptr, *b3_ptr;
+    const short    *b0_ptr, *b1_ptr, *b2_ptr, *b3_ptr;
     int32_t         pitch;
 
     /* all bands should have the same pitch */
diff --git a/libavcodec/motion_est.c b/libavcodec/motion_est.c
index 3577ada50c..9cf1203be0 100644
--- a/libavcodec/motion_est.c
+++ b/libavcodec/motion_est.c
@@ -302,8 +302,9 @@ int ff_init_me(MpegEncContext *s){
         av_log(s->avctx, AV_LOG_ERROR, "ME_MAP size is too small for SAB diamond\n");
         return -1;
     }
-    //special case of snow is needed because snow uses its own iterative ME code
-    if(s->me_method!=ME_ZERO && s->me_method!=ME_EPZS && s->me_method!=ME_X1 && s->avctx->codec_id != AV_CODEC_ID_SNOW){
+    if (s->me_method != ME_ZERO &&
+        s->me_method != ME_EPZS &&
+        s->me_method != ME_X1) {
         av_log(s->avctx, AV_LOG_ERROR, "me_method is only allowed to be set to zero and epzs; for hex,umh,full and others see dia_size\n");
         return -1;
     }
@@ -354,16 +355,14 @@ int ff_init_me(MpegEncContext *s){
     /* 8x8 fullpel search would need a 4x4 chroma compare, which we do
      * not have yet, and even if we had, the motion estimation code
      * does not expect it. */
-    if(s->codec_id != AV_CODEC_ID_SNOW){
-        if((c->avctx->me_cmp&FF_CMP_CHROMA)/* && !s->dsp.me_cmp[2]*/){
-            s->dsp.me_cmp[2]= zero_cmp;
-        }
-        if((c->avctx->me_sub_cmp&FF_CMP_CHROMA) && !s->dsp.me_sub_cmp[2]){
-            s->dsp.me_sub_cmp[2]= zero_cmp;
-        }
-        c->hpel_put[2][0]= c->hpel_put[2][1]=
-        c->hpel_put[2][2]= c->hpel_put[2][3]= zero_hpel;
+    if((c->avctx->me_cmp&FF_CMP_CHROMA)/* && !s->dsp.me_cmp[2]*/){
+        s->dsp.me_cmp[2]= zero_cmp;
+    }
+    if((c->avctx->me_sub_cmp&FF_CMP_CHROMA) && !s->dsp.me_sub_cmp[2]){
+        s->dsp.me_sub_cmp[2]= zero_cmp;
     }
+    c->hpel_put[2][0]= c->hpel_put[2][1]=
+    c->hpel_put[2][2]= c->hpel_put[2][3]= zero_hpel;
 
     if(s->codec_id == AV_CODEC_ID_H261){
         c->sub_motion_search= no_sub_motion_search;
diff --git a/libavcodec/old_codec_ids.h b/libavcodec/old_codec_ids.h
index 2b72e38d20..aabc05fb8f 100644
--- a/libavcodec/old_codec_ids.h
+++ b/libavcodec/old_codec_ids.h
@@ -86,7 +86,9 @@
     CODEC_ID_MSZH,
     CODEC_ID_ZLIB,
     CODEC_ID_QTRLE,
+#if FF_API_SNOW
     CODEC_ID_SNOW,
+#endif
     CODEC_ID_TSCC,
     CODEC_ID_ULTI,
     CODEC_ID_QDRAW,
diff --git a/libavcodec/options_table.h b/libavcodec/options_table.h
index 57c80ddcf4..b58f847d44 100644
--- a/libavcodec/options_table.h
+++ b/libavcodec/options_table.h
@@ -92,7 +92,9 @@ static const AVOption options[]={
 {"x1", "X1 motion estimation", 0, AV_OPT_TYPE_CONST, {.i64 = ME_X1 }, INT_MIN, INT_MAX, V|E, "me_method" },
 {"hex", "hex motion estimation", 0, AV_OPT_TYPE_CONST, {.i64 = ME_HEX }, INT_MIN, INT_MAX, V|E, "me_method" },
 {"umh", "umh motion estimation", 0, AV_OPT_TYPE_CONST, {.i64 = ME_UMH }, INT_MIN, INT_MAX, V|E, "me_method" },
+#if FF_API_SNOW
 {"iter", "iter motion estimation", 0, AV_OPT_TYPE_CONST, {.i64 = ME_ITER }, INT_MIN, INT_MAX, V|E, "me_method" },
+#endif
 {"extradata_size", NULL, OFFSET(extradata_size), AV_OPT_TYPE_INT, {.i64 = DEFAULT }, INT_MIN, INT_MAX},
 {"time_base", NULL, OFFSET(time_base), AV_OPT_TYPE_RATIONAL, {.dbl = 0}, INT_MIN, INT_MAX},
 {"g", "set the group of picture (GOP) size", OFFSET(gop_size), AV_OPT_TYPE_INT, {.i64 = 12 }, INT_MIN, INT_MAX, V|E},
@@ -261,10 +263,6 @@ static const AVOption options[]={
 {"vsad", "sum of absolute vertical differences", 0, AV_OPT_TYPE_CONST, {.i64 = FF_CMP_VSAD }, INT_MIN, INT_MAX, V|E, "cmp_func"},
 {"vsse", "sum of squared vertical differences", 0, AV_OPT_TYPE_CONST, {.i64 = FF_CMP_VSSE }, INT_MIN, INT_MAX, V|E, "cmp_func"},
 {"nsse", "noise preserving sum of squared differences", 0, AV_OPT_TYPE_CONST, {.i64 = FF_CMP_NSSE }, INT_MIN, INT_MAX, V|E, "cmp_func"},
-#if CONFIG_SNOW_ENCODER
-{"w53", "5/3 wavelet, only used in snow", 0, AV_OPT_TYPE_CONST, {.i64 = FF_CMP_W53 }, INT_MIN, INT_MAX, V|E, "cmp_func"},
-{"w97", "9/7 wavelet, only used in snow", 0, AV_OPT_TYPE_CONST, {.i64 = FF_CMP_W97 }, INT_MIN, INT_MAX, V|E, "cmp_func"},
-#endif
 {"dctmax", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = FF_CMP_DCTMAX }, INT_MIN, INT_MAX, V|E, "cmp_func"},
 {"chroma", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = FF_CMP_CHROMA }, INT_MIN, INT_MAX, V|E, "cmp_func"},
 {"pre_dia_size", "diamond type & size for motion estimation pre-pass", OFFSET(pre_dia_size), AV_OPT_TYPE_INT, {.i64 = DEFAULT }, INT_MIN, INT_MAX, V|E},
diff --git a/libavcodec/snow.c b/libavcodec/snow.c
deleted file mode 100644
index 153e5b2286..0000000000
--- a/libavcodec/snow.c
+++ /dev/null
@@ -1,678 +0,0 @@
-/*
- * Copyright (C) 2004 Michael Niedermayer <michaelni@gmx.at>
- *
- * This file is part of Libav.
- *
- * Libav is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * Libav is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with Libav; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-#include "libavutil/intmath.h"
-#include "libavutil/log.h"
-#include "libavutil/opt.h"
-#include "avcodec.h"
-#include "dsputil.h"
-#include "dwt.h"
-#include "internal.h"
-#include "snow.h"
-#include "snowdata.h"
-
-#include "rangecoder.h"
-#include "mathops.h"
-#include "h263.h"
-
-#undef NDEBUG
-#include <assert.h>
-
-
-void ff_snow_inner_add_yblock(const uint8_t *obmc, const int obmc_stride, uint8_t * * block, int b_w, int b_h,
-                              int src_x, int src_y, int src_stride, slice_buffer * sb, int add, uint8_t * dst8){
-    int y, x;
-    IDWTELEM * dst;
-    for(y=0; y<b_h; y++){
-        //FIXME ugly misuse of obmc_stride
-        const uint8_t *obmc1= obmc + y*obmc_stride;
-        const uint8_t *obmc2= obmc1+ (obmc_stride>>1);
-        const uint8_t *obmc3= obmc1+ obmc_stride*(obmc_stride>>1);
-        const uint8_t *obmc4= obmc3+ (obmc_stride>>1);
-        dst = slice_buffer_get_line(sb, src_y + y);
-        for(x=0; x<b_w; x++){
-            int v=   obmc1[x] * block[3][x + y*src_stride]
-                    +obmc2[x] * block[2][x + y*src_stride]
-                    +obmc3[x] * block[1][x + y*src_stride]
-                    +obmc4[x] * block[0][x + y*src_stride];
-
-            v <<= 8 - LOG2_OBMC_MAX;
-            if(FRAC_BITS != 8){
-                v >>= 8 - FRAC_BITS;
-            }
-            if(add){
-                v += dst[x + src_x];
-                v = (v + (1<<(FRAC_BITS-1))) >> FRAC_BITS;
-                if(v&(~255)) v= ~(v>>31);
-                dst8[x + y*src_stride] = v;
-            }else{
-                dst[x + src_x] -= v;
-            }
-        }
-    }
-}
-
-void ff_snow_reset_contexts(SnowContext *s){ //FIXME better initial contexts
-    int plane_index, level, orientation;
-
-    for(plane_index=0; plane_index<3; plane_index++){
-        for(level=0; level<MAX_DECOMPOSITIONS; level++){
-            for(orientation=level ? 1:0; orientation<4; orientation++){
-                memset(s->plane[plane_index].band[level][orientation].state, MID_STATE, sizeof(s->plane[plane_index].band[level][orientation].state));
-            }
-        }
-    }
-    memset(s->header_state, MID_STATE, sizeof(s->header_state));
-    memset(s->block_state, MID_STATE, sizeof(s->block_state));
-}
-
-int ff_snow_alloc_blocks(SnowContext *s){
-    int w= -((-s->avctx->width )>>LOG2_MB_SIZE);
-    int h= -((-s->avctx->height)>>LOG2_MB_SIZE);
-
-    s->b_width = w;
-    s->b_height= h;
-
-    av_free(s->block);
-    s->block= av_mallocz(w * h * sizeof(BlockNode) << (s->block_max_depth*2));
-    return 0;
-}
-
-static void init_qexp(void){
-    int i;
-    double v=128;
-
-    for(i=0; i<QROOT; i++){
-        ff_qexp[i]= lrintf(v);
-        v *= pow(2, 1.0 / QROOT);
-    }
-}
-static void mc_block(Plane *p, uint8_t *dst, const uint8_t *src, int stride, int b_w, int b_h, int dx, int dy){
-    static const uint8_t weight[64]={
-    8,7,6,5,4,3,2,1,
-    7,7,0,0,0,0,0,1,
-    6,0,6,0,0,0,2,0,
-    5,0,0,5,0,3,0,0,
-    4,0,0,0,4,0,0,0,
-    3,0,0,5,0,3,0,0,
-    2,0,6,0,0,0,2,0,
-    1,7,0,0,0,0,0,1,
-    };
-
-    static const uint8_t brane[256]={
-    0x00,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x11,0x12,0x12,0x12,0x12,0x12,0x12,0x12,
-    0x04,0x05,0xcc,0xcc,0xcc,0xcc,0xcc,0x41,0x15,0x16,0xcc,0xcc,0xcc,0xcc,0xcc,0x52,
-    0x04,0xcc,0x05,0xcc,0xcc,0xcc,0x41,0xcc,0x15,0xcc,0x16,0xcc,0xcc,0xcc,0x52,0xcc,
-    0x04,0xcc,0xcc,0x05,0xcc,0x41,0xcc,0xcc,0x15,0xcc,0xcc,0x16,0xcc,0x52,0xcc,0xcc,
-    0x04,0xcc,0xcc,0xcc,0x41,0xcc,0xcc,0xcc,0x15,0xcc,0xcc,0xcc,0x16,0xcc,0xcc,0xcc,
-    0x04,0xcc,0xcc,0x41,0xcc,0x05,0xcc,0xcc,0x15,0xcc,0xcc,0x52,0xcc,0x16,0xcc,0xcc,
-    0x04,0xcc,0x41,0xcc,0xcc,0xcc,0x05,0xcc,0x15,0xcc,0x52,0xcc,0xcc,0xcc,0x16,0xcc,
-    0x04,0x41,0xcc,0xcc,0xcc,0xcc,0xcc,0x05,0x15,0x52,0xcc,0xcc,0xcc,0xcc,0xcc,0x16,
-    0x44,0x45,0x45,0x45,0x45,0x45,0x45,0x45,0x55,0x56,0x56,0x56,0x56,0x56,0x56,0x56,
-    0x48,0x49,0xcc,0xcc,0xcc,0xcc,0xcc,0x85,0x59,0x5A,0xcc,0xcc,0xcc,0xcc,0xcc,0x96,
-    0x48,0xcc,0x49,0xcc,0xcc,0xcc,0x85,0xcc,0x59,0xcc,0x5A,0xcc,0xcc,0xcc,0x96,0xcc,
-    0x48,0xcc,0xcc,0x49,0xcc,0x85,0xcc,0xcc,0x59,0xcc,0xcc,0x5A,0xcc,0x96,0xcc,0xcc,
-    0x48,0xcc,0xcc,0xcc,0x49,0xcc,0xcc,0xcc,0x59,0xcc,0xcc,0xcc,0x96,0xcc,0xcc,0xcc,
-    0x48,0xcc,0xcc,0x85,0xcc,0x49,0xcc,0xcc,0x59,0xcc,0xcc,0x96,0xcc,0x5A,0xcc,0xcc,
-    0x48,0xcc,0x85,0xcc,0xcc,0xcc,0x49,0xcc,0x59,0xcc,0x96,0xcc,0xcc,0xcc,0x5A,0xcc,
-    0x48,0x85,0xcc,0xcc,0xcc,0xcc,0xcc,0x49,0x59,0x96,0xcc,0xcc,0xcc,0xcc,0xcc,0x5A,
-    };
-
-    static const uint8_t needs[16]={
-    0,1,0,0,
-    2,4,2,0,
-    0,1,0,0,
-    15
-    };
-
-    int x, y, b, r, l;
-    int16_t tmpIt   [64*(32+HTAPS_MAX)];
-    uint8_t tmp2t[3][64*(32+HTAPS_MAX)];
-    int16_t *tmpI= tmpIt;
-    uint8_t *tmp2= tmp2t[0];
-    const uint8_t *hpel[11];
-    assert(dx<16 && dy<16);
-    r= brane[dx + 16*dy]&15;
-    l= brane[dx + 16*dy]>>4;
-
-    b= needs[l] | needs[r];
-    if(p && !p->diag_mc)
-        b= 15;
-
-    if(b&5){
-        for(y=0; y < b_h+HTAPS_MAX-1; y++){
-            for(x=0; x < b_w; x++){
-                int a_1=src[x + HTAPS_MAX/2-4];
-                int a0= src[x + HTAPS_MAX/2-3];
-                int a1= src[x + HTAPS_MAX/2-2];
-                int a2= src[x + HTAPS_MAX/2-1];
-                int a3= src[x + HTAPS_MAX/2+0];
-                int a4= src[x + HTAPS_MAX/2+1];
-                int a5= src[x + HTAPS_MAX/2+2];
-                int a6= src[x + HTAPS_MAX/2+3];
-                int am=0;
-                if(!p || p->fast_mc){
-                    am= 20*(a2+a3) - 5*(a1+a4) + (a0+a5);
-                    tmpI[x]= am;
-                    am= (am+16)>>5;
-                }else{
-                    am= p->hcoeff[0]*(a2+a3) + p->hcoeff[1]*(a1+a4) + p->hcoeff[2]*(a0+a5) + p->hcoeff[3]*(a_1+a6);
-                    tmpI[x]= am;
-                    am= (am+32)>>6;
-                }
-
-                if(am&(~255)) am= ~(am>>31);
-                tmp2[x]= am;
-            }
-            tmpI+= 64;
-            tmp2+= 64;
-            src += stride;
-        }
-        src -= stride*y;
-    }
-    src += HTAPS_MAX/2 - 1;
-    tmp2= tmp2t[1];
-
-    if(b&2){
-        for(y=0; y < b_h; y++){
-            for(x=0; x < b_w+1; x++){
-                int a_1=src[x + (HTAPS_MAX/2-4)*stride];
-                int a0= src[x + (HTAPS_MAX/2-3)*stride];
-                int a1= src[x + (HTAPS_MAX/2-2)*stride];
-                int a2= src[x + (HTAPS_MAX/2-1)*stride];
-                int a3= src[x + (HTAPS_MAX/2+0)*stride];
-                int a4= src[x + (HTAPS_MAX/2+1)*stride];
-                int a5= src[x + (HTAPS_MAX/2+2)*stride];
-                int a6= src[x + (HTAPS_MAX/2+3)*stride];
-                int am=0;
-                if(!p || p->fast_mc)
-                    am= (20*(a2+a3) - 5*(a1+a4) + (a0+a5) + 16)>>5;
-                else
-                    am= (p->hcoeff[0]*(a2+a3) + p->hcoeff[1]*(a1+a4) + p->hcoeff[2]*(a0+a5) + p->hcoeff[3]*(a_1+a6) + 32)>>6;
-
-                if(am&(~255)) am= ~(am>>31);
-                tmp2[x]= am;
-            }
-            src += stride;
-            tmp2+= 64;
-        }
-        src -= stride*y;
-    }
-    src += stride*(HTAPS_MAX/2 - 1);
-    tmp2= tmp2t[2];
-    tmpI= tmpIt;
-    if(b&4){
-        for(y=0; y < b_h; y++){
-            for(x=0; x < b_w; x++){
-                int a_1=tmpI[x + (HTAPS_MAX/2-4)*64];
-                int a0= tmpI[x + (HTAPS_MAX/2-3)*64];
-                int a1= tmpI[x + (HTAPS_MAX/2-2)*64];
-                int a2= tmpI[x + (HTAPS_MAX/2-1)*64];
-                int a3= tmpI[x + (HTAPS_MAX/2+0)*64];
-                int a4= tmpI[x + (HTAPS_MAX/2+1)*64];
-                int a5= tmpI[x + (HTAPS_MAX/2+2)*64];
-                int a6= tmpI[x + (HTAPS_MAX/2+3)*64];
-                int am=0;
-                if(!p || p->fast_mc)
-                    am= (20*(a2+a3) - 5*(a1+a4) + (a0+a5) + 512)>>10;
-                else
-                    am= (p->hcoeff[0]*(a2+a3) + p->hcoeff[1]*(a1+a4) + p->hcoeff[2]*(a0+a5) + p->hcoeff[3]*(a_1+a6) + 2048)>>12;
-                if(am&(~255)) am= ~(am>>31);
-                tmp2[x]= am;
-            }
-            tmpI+= 64;
-            tmp2+= 64;
-        }
-    }
-
-    hpel[ 0]= src;
-    hpel[ 1]= tmp2t[0] + 64*(HTAPS_MAX/2-1);
-    hpel[ 2]= src + 1;
-
-    hpel[ 4]= tmp2t[1];
-    hpel[ 5]= tmp2t[2];
-    hpel[ 6]= tmp2t[1] + 1;
-
-    hpel[ 8]= src + stride;
-    hpel[ 9]= hpel[1] + 64;
-    hpel[10]= hpel[8] + 1;
-
-#define MC_STRIDE(x) (needs[x] ? 64 : stride)
-
-    if(b==15){
-        int dxy = dx / 8 + dy / 8 * 4;
-        const uint8_t *src1 = hpel[dxy    ];
-        const uint8_t *src2 = hpel[dxy + 1];
-        const uint8_t *src3 = hpel[dxy + 4];
-        const uint8_t *src4 = hpel[dxy + 5];
-        int stride1 = MC_STRIDE(dxy);
-        int stride2 = MC_STRIDE(dxy + 1);
-        int stride3 = MC_STRIDE(dxy + 4);
-        int stride4 = MC_STRIDE(dxy + 5);
-        dx&=7;
-        dy&=7;
-        for(y=0; y < b_h; y++){
-            for(x=0; x < b_w; x++){
-                dst[x]= ((8-dx)*(8-dy)*src1[x] + dx*(8-dy)*src2[x]+
-                         (8-dx)*   dy *src3[x] + dx*   dy *src4[x]+32)>>6;
-            }
-            src1+=stride1;
-            src2+=stride2;
-            src3+=stride3;
-            src4+=stride4;
-            dst +=stride;
-        }
-    }else{
-        const uint8_t *src1= hpel[l];
-        const uint8_t *src2= hpel[r];
-        int stride1 = MC_STRIDE(l);
-        int stride2 = MC_STRIDE(r);
-        int a= weight[((dx&7) + (8*(dy&7)))];
-        int b= 8-a;
-        for(y=0; y < b_h; y++){
-            for(x=0; x < b_w; x++){
-                dst[x]= (a*src1[x] + b*src2[x] + 4)>>3;
-            }
-            src1+=stride1;
-            src2+=stride2;
-            dst +=stride;
-        }
-    }
-}
-
-void ff_snow_pred_block(SnowContext *s, uint8_t *dst, uint8_t *tmp, int stride, int sx, int sy, int b_w, int b_h, BlockNode *block, int plane_index, int w, int h){
-    if(block->type & BLOCK_INTRA){
-        int x, y;
-        const unsigned color  = block->color[plane_index];
-        const unsigned color4 = color*0x01010101;
-        if(b_w==32){
-            for(y=0; y < b_h; y++){
-                *(uint32_t*)&dst[0 + y*stride]= color4;
-                *(uint32_t*)&dst[4 + y*stride]= color4;
-                *(uint32_t*)&dst[8 + y*stride]= color4;
-                *(uint32_t*)&dst[12+ y*stride]= color4;
-                *(uint32_t*)&dst[16+ y*stride]= color4;
-                *(uint32_t*)&dst[20+ y*stride]= color4;
-                *(uint32_t*)&dst[24+ y*stride]= color4;
-                *(uint32_t*)&dst[28+ y*stride]= color4;
-            }
-        }else if(b_w==16){
-            for(y=0; y < b_h; y++){
-                *(uint32_t*)&dst[0 + y*stride]= color4;
-                *(uint32_t*)&dst[4 + y*stride]= color4;
-                *(uint32_t*)&dst[8 + y*stride]= color4;
-                *(uint32_t*)&dst[12+ y*stride]= color4;
-            }
-        }else if(b_w==8){
-            for(y=0; y < b_h; y++){
-                *(uint32_t*)&dst[0 + y*stride]= color4;
-                *(uint32_t*)&dst[4 + y*stride]= color4;
-            }
-        }else if(b_w==4){
-            for(y=0; y < b_h; y++){
-                *(uint32_t*)&dst[0 + y*stride]= color4;
-            }
-        }else{
-            for(y=0; y < b_h; y++){
-                for(x=0; x < b_w; x++){
-                    dst[x + y*stride]= color;
-                }
-            }
-        }
-    }else{
-        uint8_t *src= s->last_picture[block->ref].data[plane_index];
-        const int scale= plane_index ?  s->mv_scale : 2*s->mv_scale;
-        int mx= block->mx*scale;
-        int my= block->my*scale;
-        const int dx= mx&15;
-        const int dy= my&15;
-        const int tab_index= 3 - (b_w>>2) + (b_w>>4);
-        sx += (mx>>4) - (HTAPS_MAX/2-1);
-        sy += (my>>4) - (HTAPS_MAX/2-1);
-        src += sx + sy*stride;
-        if(   (unsigned)sx >= w - b_w - (HTAPS_MAX-2)
-           || (unsigned)sy >= h - b_h - (HTAPS_MAX-2)){
-            s->vdsp.emulated_edge_mc(tmp + MB_SIZE, src, stride, b_w+HTAPS_MAX-1, b_h+HTAPS_MAX-1, sx, sy, w, h);
-            src= tmp + MB_SIZE;
-        }
-//        assert(b_w == b_h || 2*b_w == b_h || b_w == 2*b_h);
-//        assert(!(b_w&(b_w-1)));
-        assert(b_w>1 && b_h>1);
-        assert((tab_index>=0 && tab_index<4) || b_w==32);
-        if((dx&3) || (dy&3) || !(b_w == b_h || 2*b_w == b_h || b_w == 2*b_h) || (b_w&(b_w-1)) || !s->plane[plane_index].fast_mc )
-            mc_block(&s->plane[plane_index], dst, src, stride, b_w, b_h, dx, dy);
-        else if(b_w==32){
-            int y;
-            for(y=0; y<b_h; y+=16){
-                s->dsp.put_h264_qpel_pixels_tab[0][dy+(dx>>2)](dst + y*stride, src + 3 + (y+3)*stride,stride);
-                s->dsp.put_h264_qpel_pixels_tab[0][dy+(dx>>2)](dst + 16 + y*stride, src + 19 + (y+3)*stride,stride);
-            }
-        }else if(b_w==b_h)
-            s->dsp.put_h264_qpel_pixels_tab[tab_index  ][dy+(dx>>2)](dst,src + 3 + 3*stride,stride);
-        else if(b_w==2*b_h){
-            s->dsp.put_h264_qpel_pixels_tab[tab_index+1][dy+(dx>>2)](dst    ,src + 3       + 3*stride,stride);
-            s->dsp.put_h264_qpel_pixels_tab[tab_index+1][dy+(dx>>2)](dst+b_h,src + 3 + b_h + 3*stride,stride);
-        }else{
-            assert(2*b_w==b_h);
-            s->dsp.put_h264_qpel_pixels_tab[tab_index  ][dy+(dx>>2)](dst           ,src + 3 + 3*stride           ,stride);
-            s->dsp.put_h264_qpel_pixels_tab[tab_index  ][dy+(dx>>2)](dst+b_w*stride,src + 3 + 3*stride+b_w*stride,stride);
-        }
-    }
-}
-
-#define mca(dx,dy,b_w)\
-static void mc_block_hpel ## dx ## dy ## b_w(uint8_t *dst, const uint8_t *src, int stride, int h){\
-    assert(h==b_w);\
-    mc_block(NULL, dst, src-(HTAPS_MAX/2-1)-(HTAPS_MAX/2-1)*stride, stride, b_w, b_w, dx, dy);\
-}
-
-mca( 0, 0,16)
-mca( 8, 0,16)
-mca( 0, 8,16)
-mca( 8, 8,16)
-mca( 0, 0,8)
-mca( 8, 0,8)
-mca( 0, 8,8)
-mca( 8, 8,8)
-
-av_cold int ff_snow_common_init(AVCodecContext *avctx){
-    SnowContext *s = avctx->priv_data;
-    int width, height;
-    int i, j, ret;
-    int emu_buf_size;
-
-    s->avctx= avctx;
-    s->max_ref_frames=1; //just make sure its not an invalid value in case of no initial keyframe
-
-    ff_dsputil_init(&s->dsp, avctx);
-    ff_videodsp_init(&s->vdsp, 8);
-    ff_dwt_init(&s->dwt);
-
-#define mcf(dx,dy)\
-    s->dsp.put_qpel_pixels_tab       [0][dy+dx/4]=\
-    s->dsp.put_no_rnd_qpel_pixels_tab[0][dy+dx/4]=\
-        s->dsp.put_h264_qpel_pixels_tab[0][dy+dx/4];\
-    s->dsp.put_qpel_pixels_tab       [1][dy+dx/4]=\
-    s->dsp.put_no_rnd_qpel_pixels_tab[1][dy+dx/4]=\
-        s->dsp.put_h264_qpel_pixels_tab[1][dy+dx/4];
-
-    mcf( 0, 0)
-    mcf( 4, 0)
-    mcf( 8, 0)
-    mcf(12, 0)
-    mcf( 0, 4)
-    mcf( 4, 4)
-    mcf( 8, 4)
-    mcf(12, 4)
-    mcf( 0, 8)
-    mcf( 4, 8)
-    mcf( 8, 8)
-    mcf(12, 8)
-    mcf( 0,12)
-    mcf( 4,12)
-    mcf( 8,12)
-    mcf(12,12)
-
-#define mcfh(dx,dy)\
-    s->dsp.put_pixels_tab       [0][dy/4+dx/8]=\
-    s->dsp.put_no_rnd_pixels_tab[0][dy/4+dx/8]=\
-        mc_block_hpel ## dx ## dy ## 16;\
-    s->dsp.put_pixels_tab       [1][dy/4+dx/8]=\
-    s->dsp.put_no_rnd_pixels_tab[1][dy/4+dx/8]=\
-        mc_block_hpel ## dx ## dy ## 8;
-
-    mcfh(0, 0)
-    mcfh(8, 0)
-    mcfh(0, 8)
-    mcfh(8, 8)
-
-    init_qexp();
-
-//    dec += FFMAX(s->chroma_h_shift, s->chroma_v_shift);
-
-    width= s->avctx->width;
-    height= s->avctx->height;
-
-    FF_ALLOCZ_OR_GOTO(avctx, s->spatial_idwt_buffer, width * height * sizeof(IDWTELEM), fail);
-    FF_ALLOCZ_OR_GOTO(avctx, s->spatial_dwt_buffer,  width * height * sizeof(DWTELEM),  fail); //FIXME this does not belong here
-    FF_ALLOCZ_OR_GOTO(avctx, s->temp_dwt_buffer,     width * sizeof(DWTELEM),  fail);
-    FF_ALLOCZ_OR_GOTO(avctx, s->temp_idwt_buffer,    width * sizeof(IDWTELEM), fail);
-    FF_ALLOC_OR_GOTO(avctx,  s->run_buffer,          ((width + 1) >> 1) * ((height + 1) >> 1) * sizeof(*s->run_buffer), fail);
-
-    for(i=0; i<MAX_REF_FRAMES; i++)
-        for(j=0; j<MAX_REF_FRAMES; j++)
-            ff_scale_mv_ref[i][j] = 256*(i+1)/(j+1);
-
-    if ((ret = ff_get_buffer(s->avctx, &s->mconly_picture)) < 0) {
-        av_log(s->avctx, AV_LOG_ERROR, "get_buffer() failed\n");
-        return ret;
-    }
-    FF_ALLOC_OR_GOTO(avctx, s->scratchbuf, s->mconly_picture.linesize[0]*7*MB_SIZE, fail);
-    emu_buf_size = s->mconly_picture.linesize[0] * (2 * MB_SIZE + HTAPS_MAX - 1);
-    FF_ALLOC_OR_GOTO(avctx, s->emu_edge_buffer, emu_buf_size, fail);
-
-    return 0;
-fail:
-    return AVERROR(ENOMEM);
-}
-
-int ff_snow_common_init_after_header(AVCodecContext *avctx) {
-    SnowContext *s = avctx->priv_data;
-    int plane_index, level, orientation;
-
-    for(plane_index=0; plane_index<3; plane_index++){
-        int w= s->avctx->width;
-        int h= s->avctx->height;
-
-        if(plane_index){
-            w>>= s->chroma_h_shift;
-            h>>= s->chroma_v_shift;
-        }
-        s->plane[plane_index].width = w;
-        s->plane[plane_index].height= h;
-
-        for(level=s->spatial_decomposition_count-1; level>=0; level--){
-            for(orientation=level ? 1 : 0; orientation<4; orientation++){
-                SubBand *b= &s->plane[plane_index].band[level][orientation];
-
-                b->buf= s->spatial_dwt_buffer;
-                b->level= level;
-                b->stride= s->plane[plane_index].width << (s->spatial_decomposition_count - level);
-                b->width = (w + !(orientation&1))>>1;
-                b->height= (h + !(orientation>1))>>1;
-
-                b->stride_line = 1 << (s->spatial_decomposition_count - level);
-                b->buf_x_offset = 0;
-                b->buf_y_offset = 0;
-
-                if(orientation&1){
-                    b->buf += (w+1)>>1;
-                    b->buf_x_offset = (w+1)>>1;
-                }
-                if(orientation>1){
-                    b->buf += b->stride>>1;
-                    b->buf_y_offset = b->stride_line >> 1;
-                }
-                b->ibuf= s->spatial_idwt_buffer + (b->buf - s->spatial_dwt_buffer);
-
-                if(level)
-                    b->parent= &s->plane[plane_index].band[level-1][orientation];
-                //FIXME avoid this realloc
-                av_freep(&b->x_coeff);
-                b->x_coeff=av_mallocz(((b->width+1) * b->height+1)*sizeof(x_and_coeff));
-            }
-            w= (w+1)>>1;
-            h= (h+1)>>1;
-        }
-    }
-
-    return 0;
-}
-
-#define USE_HALFPEL_PLANE 0
-
-static void halfpel_interpol(SnowContext *s, uint8_t *halfpel[4][4], AVFrame *frame){
-    int p,x,y;
-
-    for(p=0; p<3; p++){
-        int is_chroma= !!p;
-        int w= s->avctx->width  >>is_chroma;
-        int h= s->avctx->height >>is_chroma;
-        int ls= frame->linesize[p];
-        uint8_t *src= frame->data[p];
-
-        halfpel[1][p] = (uint8_t*) av_malloc(ls * (h + 2 * EDGE_WIDTH)) + EDGE_WIDTH * (1 + ls);
-        halfpel[2][p] = (uint8_t*) av_malloc(ls * (h + 2 * EDGE_WIDTH)) + EDGE_WIDTH * (1 + ls);
-        halfpel[3][p] = (uint8_t*) av_malloc(ls * (h + 2 * EDGE_WIDTH)) + EDGE_WIDTH * (1 + ls);
-
-        halfpel[0][p]= src;
-        for(y=0; y<h; y++){
-            for(x=0; x<w; x++){
-                int i= y*ls + x;
-
-                halfpel[1][p][i]= (20*(src[i] + src[i+1]) - 5*(src[i-1] + src[i+2]) + (src[i-2] + src[i+3]) + 16 )>>5;
-            }
-        }
-        for(y=0; y<h; y++){
-            for(x=0; x<w; x++){
-                int i= y*ls + x;
-
-                halfpel[2][p][i]= (20*(src[i] + src[i+ls]) - 5*(src[i-ls] + src[i+2*ls]) + (src[i-2*ls] + src[i+3*ls]) + 16 )>>5;
-            }
-        }
-        src= halfpel[1][p];
-        for(y=0; y<h; y++){
-            for(x=0; x<w; x++){
-                int i= y*ls + x;
-
-                halfpel[3][p][i]= (20*(src[i] + src[i+ls]) - 5*(src[i-ls] + src[i+2*ls]) + (src[i-2*ls] + src[i+3*ls]) + 16 )>>5;
-            }
-        }
-
-//FIXME border!
-    }
-}
-
-void ff_snow_release_buffer(AVCodecContext *avctx)
-{
-    SnowContext *s = avctx->priv_data;
-    int i;
-
-    if(s->last_picture[s->max_ref_frames-1].data[0]){
-        avctx->release_buffer(avctx, &s->last_picture[s->max_ref_frames-1]);
-        for(i=0; i<9; i++)
-            if(s->halfpel_plane[s->max_ref_frames-1][1+i/3][i%3])
-                av_free(s->halfpel_plane[s->max_ref_frames-1][1+i/3][i%3] - EDGE_WIDTH*(1+s->current_picture.linesize[i%3]));
-    }
-}
-
-int ff_snow_frame_start(SnowContext *s){
-   AVFrame tmp;
-   int w= s->avctx->width; //FIXME round up to x16 ?
-   int h= s->avctx->height;
-
-    if (s->current_picture.data[0] && !(s->avctx->flags&CODEC_FLAG_EMU_EDGE)) {
-        s->dsp.draw_edges(s->current_picture.data[0],
-                          s->current_picture.linesize[0], w   , h   ,
-                          EDGE_WIDTH  , EDGE_WIDTH  , EDGE_TOP | EDGE_BOTTOM);
-        s->dsp.draw_edges(s->current_picture.data[1],
-                          s->current_picture.linesize[1], w>>1, h>>1,
-                          EDGE_WIDTH/2, EDGE_WIDTH/2, EDGE_TOP | EDGE_BOTTOM);
-        s->dsp.draw_edges(s->current_picture.data[2],
-                          s->current_picture.linesize[2], w>>1, h>>1,
-                          EDGE_WIDTH/2, EDGE_WIDTH/2, EDGE_TOP | EDGE_BOTTOM);
-    }
-
-    ff_snow_release_buffer(s->avctx);
-
-    tmp= s->last_picture[s->max_ref_frames-1];
-    memmove(s->last_picture+1, s->last_picture, (s->max_ref_frames-1)*sizeof(AVFrame));
-    memmove(s->halfpel_plane+1, s->halfpel_plane, (s->max_ref_frames-1)*sizeof(void*)*4*4);
-    if(USE_HALFPEL_PLANE && s->current_picture.data[0])
-        halfpel_interpol(s, s->halfpel_plane[0], &s->current_picture);
-    s->last_picture[0]= s->current_picture;
-    s->current_picture= tmp;
-
-    if(s->keyframe){
-        s->ref_frames= 0;
-    }else{
-        int i;
-        for(i=0; i<s->max_ref_frames && s->last_picture[i].data[0]; i++)
-            if(i && s->last_picture[i-1].key_frame)
-                break;
-        s->ref_frames= i;
-        if(s->ref_frames==0){
-            av_log(s->avctx,AV_LOG_ERROR, "No reference frames\n");
-            return -1;
-        }
-    }
-
-    s->current_picture.reference= 1;
-    if(ff_get_buffer(s->avctx, &s->current_picture) < 0){
-        av_log(s->avctx, AV_LOG_ERROR, "get_buffer() failed\n");
-        return -1;
-    }
-
-    s->current_picture.key_frame= s->keyframe;
-
-    return 0;
-}
-
-av_cold void ff_snow_common_end(SnowContext *s)
-{
-    int plane_index, level, orientation, i;
-
-    av_freep(&s->spatial_dwt_buffer);
-    av_freep(&s->temp_dwt_buffer);
-    av_freep(&s->spatial_idwt_buffer);
-    av_freep(&s->temp_idwt_buffer);
-    av_freep(&s->run_buffer);
-
-    s->m.me.temp= NULL;
-    av_freep(&s->m.me.scratchpad);
-    av_freep(&s->m.me.map);
-    av_freep(&s->m.me.score_map);
-    av_freep(&s->m.obmc_scratchpad);
-
-    av_freep(&s->block);
-    av_freep(&s->scratchbuf);
-    av_freep(&s->emu_edge_buffer);
-
-    for(i=0; i<MAX_REF_FRAMES; i++){
-        av_freep(&s->ref_mvs[i]);
-        av_freep(&s->ref_scores[i]);
-        if(s->last_picture[i].data[0])
-            s->avctx->release_buffer(s->avctx, &s->last_picture[i]);
-    }
-
-    for(plane_index=0; plane_index<3; plane_index++){
-        for(level=s->spatial_decomposition_count-1; level>=0; level--){
-            for(orientation=level ? 1 : 0; orientation<4; orientation++){
-                SubBand *b= &s->plane[plane_index].band[level][orientation];
-
-                av_freep(&b->x_coeff);
-            }
-        }
-    }
-    if (s->mconly_picture.data[0])
-        s->avctx->release_buffer(s->avctx, &s->mconly_picture);
-    if (s->current_picture.data[0])
-        s->avctx->release_buffer(s->avctx, &s->current_picture);
-}
diff --git a/libavcodec/snow.h b/libavcodec/snow.h
deleted file mode 100644
index b9881155fe..0000000000
--- a/libavcodec/snow.h
+++ /dev/null
@@ -1,693 +0,0 @@
-/*
- * Copyright (C) 2004 Michael Niedermayer <michaelni@gmx.at>
- * Copyright (C) 2006 Robert Edele <yartrebo@earthlink.net>
- *
- * This file is part of Libav.
- *
- * Libav is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * Libav is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with Libav; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-#ifndef AVCODEC_SNOW_H
-#define AVCODEC_SNOW_H
-
-#include "dsputil.h"
-#include "dwt.h"
-
-#include "rangecoder.h"
-#include "mathops.h"
-#include "mpegvideo.h"
-
-#define MID_STATE 128
-
-#define MAX_PLANES 4
-#define QSHIFT 5
-#define QROOT (1<<QSHIFT)
-#define LOSSLESS_QLOG -128
-#define FRAC_BITS 4
-#define MAX_REF_FRAMES 8
-
-#define LOG2_OBMC_MAX 8
-#define OBMC_MAX (1<<(LOG2_OBMC_MAX))
-typedef struct BlockNode{
-    int16_t mx;
-    int16_t my;
-    uint8_t ref;
-    uint8_t color[3];
-    uint8_t type;
-//#define TYPE_SPLIT    1
-#define BLOCK_INTRA   1
-#define BLOCK_OPT     2
-//#define TYPE_NOCOLOR  4
-    uint8_t level; //FIXME merge into type?
-}BlockNode;
-
-static const BlockNode null_block= { //FIXME add border maybe
-    .color= {128,128,128},
-    .mx= 0,
-    .my= 0,
-    .ref= 0,
-    .type= 0,
-    .level= 0,
-};
-
-#define LOG2_MB_SIZE 4
-#define MB_SIZE (1<<LOG2_MB_SIZE)
-#define ENCODER_EXTRA_BITS 4
-#define HTAPS_MAX 8
-
-typedef struct x_and_coeff{
-    int16_t x;
-    uint16_t coeff;
-} x_and_coeff;
-
-typedef struct SubBand{
-    int level;
-    int stride;
-    int width;
-    int height;
-    int qlog;        ///< log(qscale)/log[2^(1/6)]
-    DWTELEM *buf;
-    IDWTELEM *ibuf;
-    int buf_x_offset;
-    int buf_y_offset;
-    int stride_line; ///< Stride measured in lines, not pixels.
-    x_and_coeff * x_coeff;
-    struct SubBand *parent;
-    uint8_t state[/*7*2*/ 7 + 512][32];
-}SubBand;
-
-typedef struct Plane{
-    int width;
-    int height;
-    SubBand band[MAX_DECOMPOSITIONS][4];
-
-    int htaps;
-    int8_t hcoeff[HTAPS_MAX/2];
-    int diag_mc;
-    int fast_mc;
-
-    int last_htaps;
-    int8_t last_hcoeff[HTAPS_MAX/2];
-    int last_diag_mc;
-}Plane;
-
-typedef struct SnowContext{
-    AVClass *class;
-    AVCodecContext *avctx;
-    RangeCoder c;
-    DSPContext dsp;
-    VideoDSPContext vdsp;
-    DWTContext dwt;
-    AVFrame new_picture;
-    AVFrame input_picture;              ///< new_picture with the internal linesizes
-    AVFrame current_picture;
-    AVFrame last_picture[MAX_REF_FRAMES];
-    uint8_t *halfpel_plane[MAX_REF_FRAMES][4][4];
-    AVFrame mconly_picture;
-//     uint8_t q_context[16];
-    uint8_t header_state[32];
-    uint8_t block_state[128 + 32*128];
-    int keyframe;
-    int always_reset;
-    int version;
-    int spatial_decomposition_type;
-    int last_spatial_decomposition_type;
-    int temporal_decomposition_type;
-    int spatial_decomposition_count;
-    int last_spatial_decomposition_count;
-    int temporal_decomposition_count;
-    int max_ref_frames;
-    int ref_frames;
-    int16_t (*ref_mvs[MAX_REF_FRAMES])[2];
-    uint32_t *ref_scores[MAX_REF_FRAMES];
-    DWTELEM *spatial_dwt_buffer;
-    DWTELEM *temp_dwt_buffer;
-    IDWTELEM *spatial_idwt_buffer;
-    IDWTELEM *temp_idwt_buffer;
-    int *run_buffer;
-    int colorspace_type;
-    int chroma_h_shift;
-    int chroma_v_shift;
-    int spatial_scalability;
-    int qlog;
-    int last_qlog;
-    int lambda;
-    int lambda2;
-    int pass1_rc;
-    int mv_scale;
-    int last_mv_scale;
-    int qbias;
-    int last_qbias;
-#define QBIAS_SHIFT 3
-    int b_width;
-    int b_height;
-    int block_max_depth;
-    int last_block_max_depth;
-    Plane plane[MAX_PLANES];
-    BlockNode *block;
-#define ME_CACHE_SIZE 1024
-    unsigned me_cache[ME_CACHE_SIZE];
-    unsigned me_cache_generation;
-    slice_buffer sb;
-    int memc_only;
-
-    MpegEncContext m; // needed for motion estimation, should not be used for anything else, the idea is to eventually make the motion estimation independent of MpegEncContext, so this will be removed then (FIXME/XXX)
-
-    uint8_t *scratchbuf;
-    uint8_t *emu_edge_buffer;
-}SnowContext;
-
-/* Tables */
-extern const uint8_t * const ff_obmc_tab[4];
-extern uint8_t ff_qexp[QROOT];
-extern int ff_scale_mv_ref[MAX_REF_FRAMES][MAX_REF_FRAMES];
-
-/* C bits used by mmx/sse2/altivec */
-
-static av_always_inline void snow_interleave_line_header(int * i, int width, IDWTELEM * low, IDWTELEM * high){
-    (*i) = (width) - 2;
-
-    if (width & 1){
-        low[(*i)+1] = low[((*i)+1)>>1];
-        (*i)--;
-    }
-}
-
-static av_always_inline void snow_interleave_line_footer(int * i, IDWTELEM * low, IDWTELEM * high){
-    for (; (*i)>=0; (*i)-=2){
-        low[(*i)+1] = high[(*i)>>1];
-        low[*i] = low[(*i)>>1];
-    }
-}
-
-static av_always_inline void snow_horizontal_compose_lift_lead_out(int i, IDWTELEM * dst, IDWTELEM * src, IDWTELEM * ref, int width, int w, int lift_high, int mul, int add, int shift){
-    for(; i<w; i++){
-        dst[i] = src[i] - ((mul * (ref[i] + ref[i + 1]) + add) >> shift);
-    }
-
-    if((width^lift_high)&1){
-        dst[w] = src[w] - ((mul * 2 * ref[w] + add) >> shift);
-    }
-}
-
-static av_always_inline void snow_horizontal_compose_liftS_lead_out(int i, IDWTELEM * dst, IDWTELEM * src, IDWTELEM * ref, int width, int w){
-        for(; i<w; i++){
-            dst[i] = src[i] + ((ref[i] + ref[(i+1)]+W_BO + 4 * src[i]) >> W_BS);
-        }
-
-        if(width&1){
-            dst[w] = src[w] + ((2 * ref[w] + W_BO + 4 * src[w]) >> W_BS);
-        }
-}
-
-/* common code */
-
-int ff_snow_common_init(AVCodecContext *avctx);
-int ff_snow_common_init_after_header(AVCodecContext *avctx);
-void ff_snow_common_end(SnowContext *s);
-void ff_snow_release_buffer(AVCodecContext *avctx);
-void ff_snow_reset_contexts(SnowContext *s);
-int ff_snow_alloc_blocks(SnowContext *s);
-int ff_snow_frame_start(SnowContext *s);
-void ff_snow_pred_block(SnowContext *s, uint8_t *dst, uint8_t *tmp, int stride,
-                     int sx, int sy, int b_w, int b_h, BlockNode *block,
-                     int plane_index, int w, int h);
-/* common inline functions */
-//XXX doublecheck all of them should stay inlined
-
-static inline void snow_set_blocks(SnowContext *s, int level, int x, int y, int l, int cb, int cr, int mx, int my, int ref, int type){
-    const int w= s->b_width << s->block_max_depth;
-    const int rem_depth= s->block_max_depth - level;
-    const int index= (x + y*w) << rem_depth;
-    const int block_w= 1<<rem_depth;
-    BlockNode block;
-    int i,j;
-
-    block.color[0]= l;
-    block.color[1]= cb;
-    block.color[2]= cr;
-    block.mx= mx;
-    block.my= my;
-    block.ref= ref;
-    block.type= type;
-    block.level= level;
-
-    for(j=0; j<block_w; j++){
-        for(i=0; i<block_w; i++){
-            s->block[index + i + j*w]= block;
-        }
-    }
-}
-
-static inline void pred_mv(SnowContext *s, int *mx, int *my, int ref,
-                           const BlockNode *left, const BlockNode *top, const BlockNode *tr){
-    if(s->ref_frames == 1){
-        *mx = mid_pred(left->mx, top->mx, tr->mx);
-        *my = mid_pred(left->my, top->my, tr->my);
-    }else{
-        const int *scale = ff_scale_mv_ref[ref];
-        *mx = mid_pred((left->mx * scale[left->ref] + 128) >>8,
-                       (top ->mx * scale[top ->ref] + 128) >>8,
-                       (tr  ->mx * scale[tr  ->ref] + 128) >>8);
-        *my = mid_pred((left->my * scale[left->ref] + 128) >>8,
-                       (top ->my * scale[top ->ref] + 128) >>8,
-                       (tr  ->my * scale[tr  ->ref] + 128) >>8);
-    }
-}
-
-static av_always_inline int same_block(BlockNode *a, BlockNode *b){
-    if((a->type&BLOCK_INTRA) && (b->type&BLOCK_INTRA)){
-        return !((a->color[0] - b->color[0]) | (a->color[1] - b->color[1]) | (a->color[2] - b->color[2]));
-    }else{
-        return !((a->mx - b->mx) | (a->my - b->my) | (a->ref - b->ref) | ((a->type ^ b->type)&BLOCK_INTRA));
-    }
-}
-
-//FIXME name cleanup (b_w, block_w, b_width stuff)
-//XXX should we really inline it?
-static av_always_inline void add_yblock(SnowContext *s, int sliced, slice_buffer *sb, IDWTELEM *dst, uint8_t *dst8, const uint8_t *obmc, int src_x, int src_y, int b_w, int b_h, int w, int h, int dst_stride, int src_stride, int obmc_stride, int b_x, int b_y, int add, int offset_dst, int plane_index){
-    const int b_width = s->b_width  << s->block_max_depth;
-    const int b_height= s->b_height << s->block_max_depth;
-    const int b_stride= b_width;
-    BlockNode *lt= &s->block[b_x + b_y*b_stride];
-    BlockNode *rt= lt+1;
-    BlockNode *lb= lt+b_stride;
-    BlockNode *rb= lb+1;
-    uint8_t *block[4];
-    int tmp_step= src_stride >= 7*MB_SIZE ? MB_SIZE : MB_SIZE*src_stride;
-    uint8_t *tmp = s->scratchbuf;
-    uint8_t *ptmp;
-    int x,y;
-
-    if(b_x<0){
-        lt= rt;
-        lb= rb;
-    }else if(b_x + 1 >= b_width){
-        rt= lt;
-        rb= lb;
-    }
-    if(b_y<0){
-        lt= lb;
-        rt= rb;
-    }else if(b_y + 1 >= b_height){
-        lb= lt;
-        rb= rt;
-    }
-
-    if(src_x<0){ //FIXME merge with prev & always round internal width up to *16
-        obmc -= src_x;
-        b_w += src_x;
-        if(!sliced && !offset_dst)
-            dst -= src_x;
-        src_x=0;
-    }else if(src_x + b_w > w){
-        b_w = w - src_x;
-    }
-    if(src_y<0){
-        obmc -= src_y*obmc_stride;
-        b_h += src_y;
-        if(!sliced && !offset_dst)
-            dst -= src_y*dst_stride;
-        src_y=0;
-    }else if(src_y + b_h> h){
-        b_h = h - src_y;
-    }
-
-    if(b_w<=0 || b_h<=0) return;
-
-    assert(src_stride > 2*MB_SIZE + 5);
-
-    if(!sliced && offset_dst)
-        dst += src_x + src_y*dst_stride;
-    dst8+= src_x + src_y*src_stride;
-//    src += src_x + src_y*src_stride;
-
-    ptmp= tmp + 3*tmp_step;
-    block[0]= ptmp;
-    ptmp+=tmp_step;
-    ff_snow_pred_block(s, block[0], tmp, src_stride, src_x, src_y, b_w, b_h, lt, plane_index, w, h);
-
-    if(same_block(lt, rt)){
-        block[1]= block[0];
-    }else{
-        block[1]= ptmp;
-        ptmp+=tmp_step;
-        ff_snow_pred_block(s, block[1], tmp, src_stride, src_x, src_y, b_w, b_h, rt, plane_index, w, h);
-    }
-
-    if(same_block(lt, lb)){
-        block[2]= block[0];
-    }else if(same_block(rt, lb)){
-        block[2]= block[1];
-    }else{
-        block[2]= ptmp;
-        ptmp+=tmp_step;
-        ff_snow_pred_block(s, block[2], tmp, src_stride, src_x, src_y, b_w, b_h, lb, plane_index, w, h);
-    }
-
-    if(same_block(lt, rb) ){
-        block[3]= block[0];
-    }else if(same_block(rt, rb)){
-        block[3]= block[1];
-    }else if(same_block(lb, rb)){
-        block[3]= block[2];
-    }else{
-        block[3]= ptmp;
-        ff_snow_pred_block(s, block[3], tmp, src_stride, src_x, src_y, b_w, b_h, rb, plane_index, w, h);
-    }
-    if(sliced){
-        s->dwt.inner_add_yblock(obmc, obmc_stride, block, b_w, b_h, src_x,src_y, src_stride, sb, add, dst8);
-    }else{
-        for(y=0; y<b_h; y++){
-            //FIXME ugly misuse of obmc_stride
-            const uint8_t *obmc1= obmc + y*obmc_stride;
-            const uint8_t *obmc2= obmc1+ (obmc_stride>>1);
-            const uint8_t *obmc3= obmc1+ obmc_stride*(obmc_stride>>1);
-            const uint8_t *obmc4= obmc3+ (obmc_stride>>1);
-            for(x=0; x<b_w; x++){
-                int v=   obmc1[x] * block[3][x + y*src_stride]
-                        +obmc2[x] * block[2][x + y*src_stride]
-                        +obmc3[x] * block[1][x + y*src_stride]
-                        +obmc4[x] * block[0][x + y*src_stride];
-
-                v <<= 8 - LOG2_OBMC_MAX;
-                if(FRAC_BITS != 8){
-                    v >>= 8 - FRAC_BITS;
-                }
-                if(add){
-                    v += dst[x + y*dst_stride];
-                    v = (v + (1<<(FRAC_BITS-1))) >> FRAC_BITS;
-                    if(v&(~255)) v= ~(v>>31);
-                    dst8[x + y*src_stride] = v;
-                }else{
-                    dst[x + y*dst_stride] -= v;
-                }
-            }
-        }
-    }
-}
-
-static av_always_inline void predict_slice(SnowContext *s, IDWTELEM *buf, int plane_index, int add, int mb_y){
-    Plane *p= &s->plane[plane_index];
-    const int mb_w= s->b_width  << s->block_max_depth;
-    const int mb_h= s->b_height << s->block_max_depth;
-    int x, y, mb_x;
-    int block_size = MB_SIZE >> s->block_max_depth;
-    int block_w    = plane_index ? block_size/2 : block_size;
-    const uint8_t *obmc  = plane_index ? ff_obmc_tab[s->block_max_depth+1] : ff_obmc_tab[s->block_max_depth];
-    const int obmc_stride= plane_index ? block_size : 2*block_size;
-    int ref_stride= s->current_picture.linesize[plane_index];
-    uint8_t *dst8= s->current_picture.data[plane_index];
-    int w= p->width;
-    int h= p->height;
-
-    if(s->keyframe || (s->avctx->debug&512)){
-        if(mb_y==mb_h)
-            return;
-
-        if(add){
-            for(y=block_w*mb_y; y<FFMIN(h,block_w*(mb_y+1)); y++){
-                for(x=0; x<w; x++){
-                    int v= buf[x + y*w] + (128<<FRAC_BITS) + (1<<(FRAC_BITS-1));
-                    v >>= FRAC_BITS;
-                    if(v&(~255)) v= ~(v>>31);
-                    dst8[x + y*ref_stride]= v;
-                }
-            }
-        }else{
-            for(y=block_w*mb_y; y<FFMIN(h,block_w*(mb_y+1)); y++){
-                for(x=0; x<w; x++){
-                    buf[x + y*w]-= 128<<FRAC_BITS;
-                }
-            }
-        }
-
-        return;
-    }
-
-    for(mb_x=0; mb_x<=mb_w; mb_x++){
-        add_yblock(s, 0, NULL, buf, dst8, obmc,
-                   block_w*mb_x - block_w/2,
-                   block_w*mb_y - block_w/2,
-                   block_w, block_w,
-                   w, h,
-                   w, ref_stride, obmc_stride,
-                   mb_x - 1, mb_y - 1,
-                   add, 1, plane_index);
-    }
-}
-
-static av_always_inline void predict_plane(SnowContext *s, IDWTELEM *buf, int plane_index, int add){
-    const int mb_h= s->b_height << s->block_max_depth;
-    int mb_y;
-    for(mb_y=0; mb_y<=mb_h; mb_y++)
-        predict_slice(s, buf, plane_index, add, mb_y);
-}
-
-static inline void set_blocks(SnowContext *s, int level, int x, int y, int l, int cb, int cr, int mx, int my, int ref, int type){
-    const int w= s->b_width << s->block_max_depth;
-    const int rem_depth= s->block_max_depth - level;
-    const int index= (x + y*w) << rem_depth;
-    const int block_w= 1<<rem_depth;
-    BlockNode block;
-    int i,j;
-
-    block.color[0]= l;
-    block.color[1]= cb;
-    block.color[2]= cr;
-    block.mx= mx;
-    block.my= my;
-    block.ref= ref;
-    block.type= type;
-    block.level= level;
-
-    for(j=0; j<block_w; j++){
-        for(i=0; i<block_w; i++){
-            s->block[index + i + j*w]= block;
-        }
-    }
-}
-
-static inline void init_ref(MotionEstContext *c, uint8_t *src[3], uint8_t *ref[3], uint8_t *ref2[3], int x, int y, int ref_index){
-    const int offset[3]= {
-          y*c->  stride + x,
-        ((y*c->uvstride + x)>>1),
-        ((y*c->uvstride + x)>>1),
-    };
-    int i;
-    for(i=0; i<3; i++){
-        c->src[0][i]= src [i];
-        c->ref[0][i]= ref [i] + offset[i];
-    }
-    assert(!ref_index);
-}
-
-
-/* bitstream functions */
-
-extern const int8_t ff_quant3bA[256];
-
-#define QEXPSHIFT (7-FRAC_BITS+8) //FIXME try to change this to 0
-
-static inline void put_symbol(RangeCoder *c, uint8_t *state, int v, int is_signed){
-    int i;
-
-    if(v){
-        const int a= FFABS(v);
-        const int e= av_log2(a);
-        const int el= FFMIN(e, 10);
-        put_rac(c, state+0, 0);
-
-        for(i=0; i<el; i++){
-            put_rac(c, state+1+i, 1);  //1..10
-        }
-        for(; i<e; i++){
-            put_rac(c, state+1+9, 1);  //1..10
-        }
-        put_rac(c, state+1+FFMIN(i,9), 0);
-
-        for(i=e-1; i>=el; i--){
-            put_rac(c, state+22+9, (a>>i)&1); //22..31
-        }
-        for(; i>=0; i--){
-            put_rac(c, state+22+i, (a>>i)&1); //22..31
-        }
-
-        if(is_signed)
-            put_rac(c, state+11 + el, v < 0); //11..21
-    }else{
-        put_rac(c, state+0, 1);
-    }
-}
-
-static inline int get_symbol(RangeCoder *c, uint8_t *state, int is_signed){
-    if(get_rac(c, state+0))
-        return 0;
-    else{
-        int i, e, a;
-        e= 0;
-        while(get_rac(c, state+1 + FFMIN(e,9))){ //1..10
-            e++;
-        }
-
-        a= 1;
-        for(i=e-1; i>=0; i--){
-            a += a + get_rac(c, state+22 + FFMIN(i,9)); //22..31
-        }
-
-        e= -(is_signed && get_rac(c, state+11 + FFMIN(e,10))); //11..21
-        return (a^e)-e;
-    }
-}
-
-static inline void put_symbol2(RangeCoder *c, uint8_t *state, int v, int log2){
-    int i;
-    int r= log2>=0 ? 1<<log2 : 1;
-
-    assert(v>=0);
-    assert(log2>=-4);
-
-    while(v >= r){
-        put_rac(c, state+4+log2, 1);
-        v -= r;
-        log2++;
-        if(log2>0) r+=r;
-    }
-    put_rac(c, state+4+log2, 0);
-
-    for(i=log2-1; i>=0; i--){
-        put_rac(c, state+31-i, (v>>i)&1);
-    }
-}
-
-static inline int get_symbol2(RangeCoder *c, uint8_t *state, int log2){
-    int i;
-    int r= log2>=0 ? 1<<log2 : 1;
-    int v=0;
-
-    assert(log2>=-4);
-
-    while(get_rac(c, state+4+log2)){
-        v+= r;
-        log2++;
-        if(log2>0) r+=r;
-    }
-
-    for(i=log2-1; i>=0; i--){
-        v+= get_rac(c, state+31-i)<<i;
-    }
-
-    return v;
-}
-
-static inline void unpack_coeffs(SnowContext *s, SubBand *b, SubBand * parent, int orientation){
-    const int w= b->width;
-    const int h= b->height;
-    int x,y;
-
-    int run, runs;
-    x_and_coeff *xc= b->x_coeff;
-    x_and_coeff *prev_xc= NULL;
-    x_and_coeff *prev2_xc= xc;
-    x_and_coeff *parent_xc= parent ? parent->x_coeff : NULL;
-    x_and_coeff *prev_parent_xc= parent_xc;
-
-    runs= get_symbol2(&s->c, b->state[30], 0);
-    if(runs-- > 0) run= get_symbol2(&s->c, b->state[1], 3);
-    else           run= INT_MAX;
-
-    for(y=0; y<h; y++){
-        int v=0;
-        int lt=0, t=0, rt=0;
-
-        if(y && prev_xc->x == 0){
-            rt= prev_xc->coeff;
-        }
-        for(x=0; x<w; x++){
-            int p=0;
-            const int l= v;
-
-            lt= t; t= rt;
-
-            if(y){
-                if(prev_xc->x <= x)
-                    prev_xc++;
-                if(prev_xc->x == x + 1)
-                    rt= prev_xc->coeff;
-                else
-                    rt=0;
-            }
-            if(parent_xc){
-                if(x>>1 > parent_xc->x){
-                    parent_xc++;
-                }
-                if(x>>1 == parent_xc->x){
-                    p= parent_xc->coeff;
-                }
-            }
-            if(/*ll|*/l|lt|t|rt|p){
-                int context= av_log2(/*FFABS(ll) + */3*(l>>1) + (lt>>1) + (t&~1) + (rt>>1) + (p>>1));
-
-                v=get_rac(&s->c, &b->state[0][context]);
-                if(v){
-                    v= 2*(get_symbol2(&s->c, b->state[context + 2], context-4) + 1);
-                    v+=get_rac(&s->c, &b->state[0][16 + 1 + 3 + ff_quant3bA[l&0xFF] + 3*ff_quant3bA[t&0xFF]]);
-
-                    xc->x=x;
-                    (xc++)->coeff= v;
-                }
-            }else{
-                if(!run){
-                    if(runs-- > 0) run= get_symbol2(&s->c, b->state[1], 3);
-                    else           run= INT_MAX;
-                    v= 2*(get_symbol2(&s->c, b->state[0 + 2], 0-4) + 1);
-                    v+=get_rac(&s->c, &b->state[0][16 + 1 + 3]);
-
-                    xc->x=x;
-                    (xc++)->coeff= v;
-                }else{
-                    int max_run;
-                    run--;
-                    v=0;
-
-                    if(y) max_run= FFMIN(run, prev_xc->x - x - 2);
-                    else  max_run= FFMIN(run, w-x-1);
-                    if(parent_xc)
-                        max_run= FFMIN(max_run, 2*parent_xc->x - x - 1);
-                    x+= max_run;
-                    run-= max_run;
-                }
-            }
-        }
-        (xc++)->x= w+1; //end marker
-        prev_xc= prev2_xc;
-        prev2_xc= xc;
-
-        if(parent_xc){
-            if(y&1){
-                while(parent_xc->x != parent->width+1)
-                    parent_xc++;
-                parent_xc++;
-                prev_parent_xc= parent_xc;
-            }else{
-                parent_xc= prev_parent_xc;
-            }
-        }
-    }
-
-    (xc++)->x= w+1; //end marker
-}
-
-#endif /* AVCODEC_SNOW_H */
diff --git a/libavcodec/snowdata.h b/libavcodec/snowdata.h
deleted file mode 100644
index 4a91858402..0000000000
--- a/libavcodec/snowdata.h
+++ /dev/null
@@ -1,132 +0,0 @@
-/*
- * Copyright (C) 2004 Michael Niedermayer <michaelni@gmx.at>
- * Copyright (C) 2006 Robert Edele <yartrebo@earthlink.net>
- *
- * This file is part of Libav.
- *
- * Libav is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * Libav is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with Libav; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-#ifndef AVCODEC_SNOWDATA_H
-#define AVCODEC_SNOWDATA_H
-
-#include "snow.h"
-
-static const uint8_t obmc32[1024]={
-  0,  0,  0,  0,  4,  4,  4,  4,  4,  4,  4,  4,  8,  8,  8,  8,  8,  8,  8,  8,  4,  4,  4,  4,  4,  4,  4,  4,  0,  0,  0,  0,
-  0,  4,  4,  4,  8,  8,  8, 12, 12, 16, 16, 16, 20, 20, 20, 24, 24, 20, 20, 20, 16, 16, 16, 12, 12,  8,  8,  8,  4,  4,  4,  0,
-  0,  4,  8,  8, 12, 12, 16, 20, 20, 24, 28, 28, 32, 32, 36, 40, 40, 36, 32, 32, 28, 28, 24, 20, 20, 16, 12, 12,  8,  8,  4,  0,
-  0,  4,  8, 12, 16, 20, 24, 28, 28, 32, 36, 40, 44, 48, 52, 56, 56, 52, 48, 44, 40, 36, 32, 28, 28, 24, 20, 16, 12,  8,  4,  0,
-  4,  8, 12, 16, 20, 24, 28, 32, 40, 44, 48, 52, 56, 60, 64, 68, 68, 64, 60, 56, 52, 48, 44, 40, 32, 28, 24, 20, 16, 12,  8,  4,
-  4,  8, 12, 20, 24, 32, 36, 40, 48, 52, 56, 64, 68, 76, 80, 84, 84, 80, 76, 68, 64, 56, 52, 48, 40, 36, 32, 24, 20, 12,  8,  4,
-  4,  8, 16, 24, 28, 36, 44, 48, 56, 60, 68, 76, 80, 88, 96,100,100, 96, 88, 80, 76, 68, 60, 56, 48, 44, 36, 28, 24, 16,  8,  4,
-  4, 12, 20, 28, 32, 40, 48, 56, 64, 72, 80, 88, 92,100,108,116,116,108,100, 92, 88, 80, 72, 64, 56, 48, 40, 32, 28, 20, 12,  4,
-  4, 12, 20, 28, 40, 48, 56, 64, 72, 80, 88, 96,108,116,124,132,132,124,116,108, 96, 88, 80, 72, 64, 56, 48, 40, 28, 20, 12,  4,
-  4, 16, 24, 32, 44, 52, 60, 72, 80, 92,100,108,120,128,136,148,148,136,128,120,108,100, 92, 80, 72, 60, 52, 44, 32, 24, 16,  4,
-  4, 16, 28, 36, 48, 56, 68, 80, 88,100,112,120,132,140,152,164,164,152,140,132,120,112,100, 88, 80, 68, 56, 48, 36, 28, 16,  4,
-  4, 16, 28, 40, 52, 64, 76, 88, 96,108,120,132,144,156,168,180,180,168,156,144,132,120,108, 96, 88, 76, 64, 52, 40, 28, 16,  4,
-  8, 20, 32, 44, 56, 68, 80, 92,108,120,132,144,156,168,180,192,192,180,168,156,144,132,120,108, 92, 80, 68, 56, 44, 32, 20,  8,
-  8, 20, 32, 48, 60, 76, 88,100,116,128,140,156,168,184,196,208,208,196,184,168,156,140,128,116,100, 88, 76, 60, 48, 32, 20,  8,
-  8, 20, 36, 52, 64, 80, 96,108,124,136,152,168,180,196,212,224,224,212,196,180,168,152,136,124,108, 96, 80, 64, 52, 36, 20,  8,
-  8, 24, 40, 56, 68, 84,100,116,132,148,164,180,192,208,224,240,240,224,208,192,180,164,148,132,116,100, 84, 68, 56, 40, 24,  8,
-  8, 24, 40, 56, 68, 84,100,116,132,148,164,180,192,208,224,240,240,224,208,192,180,164,148,132,116,100, 84, 68, 56, 40, 24,  8,
-  8, 20, 36, 52, 64, 80, 96,108,124,136,152,168,180,196,212,224,224,212,196,180,168,152,136,124,108, 96, 80, 64, 52, 36, 20,  8,
-  8, 20, 32, 48, 60, 76, 88,100,116,128,140,156,168,184,196,208,208,196,184,168,156,140,128,116,100, 88, 76, 60, 48, 32, 20,  8,
-  8, 20, 32, 44, 56, 68, 80, 92,108,120,132,144,156,168,180,192,192,180,168,156,144,132,120,108, 92, 80, 68, 56, 44, 32, 20,  8,
-  4, 16, 28, 40, 52, 64, 76, 88, 96,108,120,132,144,156,168,180,180,168,156,144,132,120,108, 96, 88, 76, 64, 52, 40, 28, 16,  4,
-  4, 16, 28, 36, 48, 56, 68, 80, 88,100,112,120,132,140,152,164,164,152,140,132,120,112,100, 88, 80, 68, 56, 48, 36, 28, 16,  4,
-  4, 16, 24, 32, 44, 52, 60, 72, 80, 92,100,108,120,128,136,148,148,136,128,120,108,100, 92, 80, 72, 60, 52, 44, 32, 24, 16,  4,
-  4, 12, 20, 28, 40, 48, 56, 64, 72, 80, 88, 96,108,116,124,132,132,124,116,108, 96, 88, 80, 72, 64, 56, 48, 40, 28, 20, 12,  4,
-  4, 12, 20, 28, 32, 40, 48, 56, 64, 72, 80, 88, 92,100,108,116,116,108,100, 92, 88, 80, 72, 64, 56, 48, 40, 32, 28, 20, 12,  4,
-  4,  8, 16, 24, 28, 36, 44, 48, 56, 60, 68, 76, 80, 88, 96,100,100, 96, 88, 80, 76, 68, 60, 56, 48, 44, 36, 28, 24, 16,  8,  4,
-  4,  8, 12, 20, 24, 32, 36, 40, 48, 52, 56, 64, 68, 76, 80, 84, 84, 80, 76, 68, 64, 56, 52, 48, 40, 36, 32, 24, 20, 12,  8,  4,
-  4,  8, 12, 16, 20, 24, 28, 32, 40, 44, 48, 52, 56, 60, 64, 68, 68, 64, 60, 56, 52, 48, 44, 40, 32, 28, 24, 20, 16, 12,  8,  4,
-  0,  4,  8, 12, 16, 20, 24, 28, 28, 32, 36, 40, 44, 48, 52, 56, 56, 52, 48, 44, 40, 36, 32, 28, 28, 24, 20, 16, 12,  8,  4,  0,
-  0,  4,  8,  8, 12, 12, 16, 20, 20, 24, 28, 28, 32, 32, 36, 40, 40, 36, 32, 32, 28, 28, 24, 20, 20, 16, 12, 12,  8,  8,  4,  0,
-  0,  4,  4,  4,  8,  8,  8, 12, 12, 16, 16, 16, 20, 20, 20, 24, 24, 20, 20, 20, 16, 16, 16, 12, 12,  8,  8,  8,  4,  4,  4,  0,
-  0,  0,  0,  0,  4,  4,  4,  4,  4,  4,  4,  4,  8,  8,  8,  8,  8,  8,  8,  8,  4,  4,  4,  4,  4,  4,  4,  4,  0,  0,  0,  0,
- //error:0.000020
-};
-static const uint8_t obmc16[256]={
-  0,  4,  4,  8,  8, 12, 12, 16, 16, 12, 12,  8,  8,  4,  4,  0,
-  4,  8, 16, 20, 28, 32, 40, 44, 44, 40, 32, 28, 20, 16,  8,  4,
-  4, 16, 24, 36, 44, 56, 64, 76, 76, 64, 56, 44, 36, 24, 16,  4,
-  8, 20, 36, 48, 64, 76, 92,104,104, 92, 76, 64, 48, 36, 20,  8,
-  8, 28, 44, 64, 80,100,116,136,136,116,100, 80, 64, 44, 28,  8,
- 12, 32, 56, 76,100,120,144,164,164,144,120,100, 76, 56, 32, 12,
- 12, 40, 64, 92,116,144,168,196,196,168,144,116, 92, 64, 40, 12,
- 16, 44, 76,104,136,164,196,224,224,196,164,136,104, 76, 44, 16,
- 16, 44, 76,104,136,164,196,224,224,196,164,136,104, 76, 44, 16,
- 12, 40, 64, 92,116,144,168,196,196,168,144,116, 92, 64, 40, 12,
- 12, 32, 56, 76,100,120,144,164,164,144,120,100, 76, 56, 32, 12,
-  8, 28, 44, 64, 80,100,116,136,136,116,100, 80, 64, 44, 28,  8,
-  8, 20, 36, 48, 64, 76, 92,104,104, 92, 76, 64, 48, 36, 20,  8,
-  4, 16, 24, 36, 44, 56, 64, 76, 76, 64, 56, 44, 36, 24, 16,  4,
-  4,  8, 16, 20, 28, 32, 40, 44, 44, 40, 32, 28, 20, 16,  8,  4,
-  0,  4,  4,  8,  8, 12, 12, 16, 16, 12, 12,  8,  8,  4,  4,  0,
-//error:0.000015
-};
-
-//linear *64
-static const uint8_t obmc8[64]={
-  4, 12, 20, 28, 28, 20, 12,  4,
- 12, 36, 60, 84, 84, 60, 36, 12,
- 20, 60,100,140,140,100, 60, 20,
- 28, 84,140,196,196,140, 84, 28,
- 28, 84,140,196,196,140, 84, 28,
- 20, 60,100,140,140,100, 60, 20,
- 12, 36, 60, 84, 84, 60, 36, 12,
-  4, 12, 20, 28, 28, 20, 12,  4,
-//error:0.000000
-};
-
-//linear *64
-static const uint8_t obmc4[16]={
- 16, 48, 48, 16,
- 48,144,144, 48,
- 48,144,144, 48,
- 16, 48, 48, 16,
-//error:0.000000
-};
-
-const int8_t ff_quant3bA[256]={
- 0, 0, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1,
- 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1,
- 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1,
- 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1,
- 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1,
- 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1,
- 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1,
- 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1,
- 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1,
- 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1,
- 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1,
- 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1,
- 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1,
- 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1,
- 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1,
- 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1, 1,-1,
-};
-
-const uint8_t * const ff_obmc_tab[4]= {
-    obmc32, obmc16, obmc8, obmc4
-};
-
-/* runtime generated tables */
-uint8_t ff_qexp[QROOT];
-int ff_scale_mv_ref[MAX_REF_FRAMES][MAX_REF_FRAMES];
-
-
-#endif /* AVCODEC_SNOW_H */
diff --git a/libavcodec/snowdec.c b/libavcodec/snowdec.c
deleted file mode 100644
index 603cef0c07..0000000000
--- a/libavcodec/snowdec.c
+++ /dev/null
@@ -1,576 +0,0 @@
-/*
- * Copyright (C) 2004 Michael Niedermayer <michaelni@gmx.at>
- *
- * This file is part of Libav.
- *
- * Libav is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * Libav is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with Libav; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-#include "libavutil/intmath.h"
-#include "libavutil/log.h"
-#include "libavutil/opt.h"
-#include "avcodec.h"
-#include "dsputil.h"
-#include "dwt.h"
-#include "internal.h"
-#include "snow.h"
-
-#include "rangecoder.h"
-#include "mathops.h"
-
-#include "mpegvideo.h"
-#include "h263.h"
-
-#undef NDEBUG
-#include <assert.h>
-
-static av_always_inline void predict_slice_buffered(SnowContext *s, slice_buffer * sb, IDWTELEM * old_buffer, int plane_index, int add, int mb_y){
-    Plane *p= &s->plane[plane_index];
-    const int mb_w= s->b_width  << s->block_max_depth;
-    const int mb_h= s->b_height << s->block_max_depth;
-    int x, y, mb_x;
-    int block_size = MB_SIZE >> s->block_max_depth;
-    int block_w    = plane_index ? block_size/2 : block_size;
-    const uint8_t *obmc  = plane_index ? ff_obmc_tab[s->block_max_depth+1] : ff_obmc_tab[s->block_max_depth];
-    int obmc_stride= plane_index ? block_size : 2*block_size;
-    int ref_stride= s->current_picture.linesize[plane_index];
-    uint8_t *dst8= s->current_picture.data[plane_index];
-    int w= p->width;
-    int h= p->height;
-
-    if(s->keyframe || (s->avctx->debug&512)){
-        if(mb_y==mb_h)
-            return;
-
-        if(add){
-            for(y=block_w*mb_y; y<FFMIN(h,block_w*(mb_y+1)); y++){
-//                DWTELEM * line = slice_buffer_get_line(sb, y);
-                IDWTELEM * line = sb->line[y];
-                for(x=0; x<w; x++){
-//                    int v= buf[x + y*w] + (128<<FRAC_BITS) + (1<<(FRAC_BITS-1));
-                    int v= line[x] + (128<<FRAC_BITS) + (1<<(FRAC_BITS-1));
-                    v >>= FRAC_BITS;
-                    if(v&(~255)) v= ~(v>>31);
-                    dst8[x + y*ref_stride]= v;
-                }
-            }
-        }else{
-            for(y=block_w*mb_y; y<FFMIN(h,block_w*(mb_y+1)); y++){
-//                DWTELEM * line = slice_buffer_get_line(sb, y);
-                IDWTELEM * line = sb->line[y];
-                for(x=0; x<w; x++){
-                    line[x] -= 128 << FRAC_BITS;
-//                    buf[x + y*w]-= 128<<FRAC_BITS;
-                }
-            }
-        }
-
-        return;
-    }
-
-    for(mb_x=0; mb_x<=mb_w; mb_x++){
-        add_yblock(s, 1, sb, old_buffer, dst8, obmc,
-                   block_w*mb_x - block_w/2,
-                   block_w*mb_y - block_w/2,
-                   block_w, block_w,
-                   w, h,
-                   w, ref_stride, obmc_stride,
-                   mb_x - 1, mb_y - 1,
-                   add, 0, plane_index);
-    }
-}
-
-static inline void decode_subband_slice_buffered(SnowContext *s, SubBand *b, slice_buffer * sb, int start_y, int h, int save_state[1]){
-    const int w= b->width;
-    int y;
-    const int qlog= av_clip(s->qlog + b->qlog, 0, QROOT*16);
-    int qmul= ff_qexp[qlog&(QROOT-1)]<<(qlog>>QSHIFT);
-    int qadd= (s->qbias*qmul)>>QBIAS_SHIFT;
-    int new_index = 0;
-
-    if(b->ibuf == s->spatial_idwt_buffer || s->qlog == LOSSLESS_QLOG){
-        qadd= 0;
-        qmul= 1<<QEXPSHIFT;
-    }
-
-    /* If we are on the second or later slice, restore our index. */
-    if (start_y != 0)
-        new_index = save_state[0];
-
-
-    for(y=start_y; y<h; y++){
-        int x = 0;
-        int v;
-        IDWTELEM * line = slice_buffer_get_line(sb, y * b->stride_line + b->buf_y_offset) + b->buf_x_offset;
-        memset(line, 0, b->width*sizeof(IDWTELEM));
-        v = b->x_coeff[new_index].coeff;
-        x = b->x_coeff[new_index++].x;
-        while(x < w){
-            register int t= ( (v>>1)*qmul + qadd)>>QEXPSHIFT;
-            register int u= -(v&1);
-            line[x] = (t^u) - u;
-
-            v = b->x_coeff[new_index].coeff;
-            x = b->x_coeff[new_index++].x;
-        }
-    }
-
-    /* Save our variables for the next slice. */
-    save_state[0] = new_index;
-
-    return;
-}
-
-static int decode_q_branch(SnowContext *s, int level, int x, int y){
-    const int w= s->b_width << s->block_max_depth;
-    const int rem_depth= s->block_max_depth - level;
-    const int index= (x + y*w) << rem_depth;
-    int trx= (x+1)<<rem_depth;
-    const BlockNode *left  = x ? &s->block[index-1] : &null_block;
-    const BlockNode *top   = y ? &s->block[index-w] : &null_block;
-    const BlockNode *tl    = y && x ? &s->block[index-w-1] : left;
-    const BlockNode *tr    = y && trx<w && ((x&1)==0 || level==0) ? &s->block[index-w+(1<<rem_depth)] : tl; //FIXME use lt
-    int s_context= 2*left->level + 2*top->level + tl->level + tr->level;
-    int res;
-
-    if(s->keyframe){
-        set_blocks(s, level, x, y, null_block.color[0], null_block.color[1], null_block.color[2], null_block.mx, null_block.my, null_block.ref, BLOCK_INTRA);
-        return 0;
-    }
-
-    if(level==s->block_max_depth || get_rac(&s->c, &s->block_state[4 + s_context])){
-        int type, mx, my;
-        int l = left->color[0];
-        int cb= left->color[1];
-        int cr= left->color[2];
-        int ref = 0;
-        int ref_context= av_log2(2*left->ref) + av_log2(2*top->ref);
-        int mx_context= av_log2(2*FFABS(left->mx - top->mx)) + 0*av_log2(2*FFABS(tr->mx - top->mx));
-        int my_context= av_log2(2*FFABS(left->my - top->my)) + 0*av_log2(2*FFABS(tr->my - top->my));
-
-        type= get_rac(&s->c, &s->block_state[1 + left->type + top->type]) ? BLOCK_INTRA : 0;
-
-        if(type){
-            pred_mv(s, &mx, &my, 0, left, top, tr);
-            l += get_symbol(&s->c, &s->block_state[32], 1);
-            cb+= get_symbol(&s->c, &s->block_state[64], 1);
-            cr+= get_symbol(&s->c, &s->block_state[96], 1);
-        }else{
-            if(s->ref_frames > 1)
-                ref= get_symbol(&s->c, &s->block_state[128 + 1024 + 32*ref_context], 0);
-            if (ref >= s->ref_frames) {
-                av_log(s->avctx, AV_LOG_ERROR, "Invalid ref\n");
-                return AVERROR_INVALIDDATA;
-            }
-            pred_mv(s, &mx, &my, ref, left, top, tr);
-            mx+= get_symbol(&s->c, &s->block_state[128 + 32*(mx_context + 16*!!ref)], 1);
-            my+= get_symbol(&s->c, &s->block_state[128 + 32*(my_context + 16*!!ref)], 1);
-        }
-        set_blocks(s, level, x, y, l, cb, cr, mx, my, ref, type);
-    }else{
-        if ((res = decode_q_branch(s, level+1, 2*x+0, 2*y+0)) < 0 ||
-            (res = decode_q_branch(s, level+1, 2*x+1, 2*y+0)) < 0 ||
-            (res = decode_q_branch(s, level+1, 2*x+0, 2*y+1)) < 0 ||
-            (res = decode_q_branch(s, level+1, 2*x+1, 2*y+1)) < 0)
-            return res;
-    }
-    return 0;
-}
-
-static void dequantize_slice_buffered(SnowContext *s, slice_buffer * sb, SubBand *b, IDWTELEM *src, int stride, int start_y, int end_y){
-    const int w= b->width;
-    const int qlog= av_clip(s->qlog + b->qlog, 0, QROOT*16);
-    const int qmul= ff_qexp[qlog&(QROOT-1)]<<(qlog>>QSHIFT);
-    const int qadd= (s->qbias*qmul)>>QBIAS_SHIFT;
-    int x,y;
-
-    if(s->qlog == LOSSLESS_QLOG) return;
-
-    for(y=start_y; y<end_y; y++){
-//        DWTELEM * line = slice_buffer_get_line_from_address(sb, src + (y * stride));
-        IDWTELEM * line = slice_buffer_get_line(sb, (y * b->stride_line) + b->buf_y_offset) + b->buf_x_offset;
-        for(x=0; x<w; x++){
-            int i= line[x];
-            if(i<0){
-                line[x]= -((-i*qmul + qadd)>>(QEXPSHIFT)); //FIXME try different bias
-            }else if(i>0){
-                line[x]=  (( i*qmul + qadd)>>(QEXPSHIFT));
-            }
-        }
-    }
-}
-
-static void correlate_slice_buffered(SnowContext *s, slice_buffer * sb, SubBand *b, IDWTELEM *src, int stride, int inverse, int use_median, int start_y, int end_y){
-    const int w= b->width;
-    int x,y;
-
-    IDWTELEM * line=0; // silence silly "could be used without having been initialized" warning
-    IDWTELEM * prev;
-
-    if (start_y != 0)
-        line = slice_buffer_get_line(sb, ((start_y - 1) * b->stride_line) + b->buf_y_offset) + b->buf_x_offset;
-
-    for(y=start_y; y<end_y; y++){
-        prev = line;
-//        line = slice_buffer_get_line_from_address(sb, src + (y * stride));
-        line = slice_buffer_get_line(sb, (y * b->stride_line) + b->buf_y_offset) + b->buf_x_offset;
-        for(x=0; x<w; x++){
-            if(x){
-                if(use_median){
-                    if(y && x+1<w) line[x] += mid_pred(line[x - 1], prev[x], prev[x + 1]);
-                    else  line[x] += line[x - 1];
-                }else{
-                    if(y) line[x] += mid_pred(line[x - 1], prev[x], line[x - 1] + prev[x] - prev[x - 1]);
-                    else  line[x] += line[x - 1];
-                }
-            }else{
-                if(y) line[x] += prev[x];
-            }
-        }
-    }
-}
-
-static void decode_qlogs(SnowContext *s){
-    int plane_index, level, orientation;
-
-    for(plane_index=0; plane_index<3; plane_index++){
-        for(level=0; level<s->spatial_decomposition_count; level++){
-            for(orientation=level ? 1:0; orientation<4; orientation++){
-                int q;
-                if     (plane_index==2) q= s->plane[1].band[level][orientation].qlog;
-                else if(orientation==2) q= s->plane[plane_index].band[level][1].qlog;
-                else                    q= get_symbol(&s->c, s->header_state, 1);
-                s->plane[plane_index].band[level][orientation].qlog= q;
-            }
-        }
-    }
-}
-
-#define GET_S(dst, check) \
-    tmp= get_symbol(&s->c, s->header_state, 0);\
-    if(!(check)){\
-        av_log(s->avctx, AV_LOG_ERROR, "Error " #dst " is %d\n", tmp);\
-        return -1;\
-    }\
-    dst= tmp;
-
-static int decode_header(SnowContext *s){
-    int plane_index, tmp;
-    uint8_t kstate[32];
-
-    memset(kstate, MID_STATE, sizeof(kstate));
-
-    s->keyframe= get_rac(&s->c, kstate);
-    if(s->keyframe || s->always_reset){
-        ff_snow_reset_contexts(s);
-        s->spatial_decomposition_type=
-        s->qlog=
-        s->qbias=
-        s->mv_scale=
-        s->block_max_depth= 0;
-    }
-    if(s->keyframe){
-        GET_S(s->version, tmp <= 0U)
-        s->always_reset= get_rac(&s->c, s->header_state);
-        s->temporal_decomposition_type= get_symbol(&s->c, s->header_state, 0);
-        s->temporal_decomposition_count= get_symbol(&s->c, s->header_state, 0);
-        GET_S(s->spatial_decomposition_count, 0 < tmp && tmp <= MAX_DECOMPOSITIONS)
-        s->colorspace_type= get_symbol(&s->c, s->header_state, 0);
-        s->chroma_h_shift= get_symbol(&s->c, s->header_state, 0);
-        s->chroma_v_shift= get_symbol(&s->c, s->header_state, 0);
-        s->spatial_scalability= get_rac(&s->c, s->header_state);
-//        s->rate_scalability= get_rac(&s->c, s->header_state);
-        GET_S(s->max_ref_frames, tmp < (unsigned)MAX_REF_FRAMES)
-        s->max_ref_frames++;
-
-        decode_qlogs(s);
-    }
-
-    if(!s->keyframe){
-        if(get_rac(&s->c, s->header_state)){
-            for(plane_index=0; plane_index<2; plane_index++){
-                int htaps, i, sum=0;
-                Plane *p= &s->plane[plane_index];
-                p->diag_mc= get_rac(&s->c, s->header_state);
-                htaps= get_symbol(&s->c, s->header_state, 0)*2 + 2;
-                if((unsigned)htaps > HTAPS_MAX || htaps==0)
-                    return -1;
-                p->htaps= htaps;
-                for(i= htaps/2; i; i--){
-                    p->hcoeff[i]= get_symbol(&s->c, s->header_state, 0) * (1-2*(i&1));
-                    sum += p->hcoeff[i];
-                }
-                p->hcoeff[0]= 32-sum;
-            }
-            s->plane[2].diag_mc= s->plane[1].diag_mc;
-            s->plane[2].htaps  = s->plane[1].htaps;
-            memcpy(s->plane[2].hcoeff, s->plane[1].hcoeff, sizeof(s->plane[1].hcoeff));
-        }
-        if(get_rac(&s->c, s->header_state)){
-            GET_S(s->spatial_decomposition_count, 0 < tmp && tmp <= MAX_DECOMPOSITIONS)
-            decode_qlogs(s);
-        }
-    }
-
-    s->spatial_decomposition_type+= get_symbol(&s->c, s->header_state, 1);
-    if(s->spatial_decomposition_type > 1U){
-        av_log(s->avctx, AV_LOG_ERROR, "spatial_decomposition_type %d not supported", s->spatial_decomposition_type);
-        return -1;
-    }
-    if(FFMIN(s->avctx-> width>>s->chroma_h_shift,
-             s->avctx->height>>s->chroma_v_shift) >> (s->spatial_decomposition_count-1) <= 0){
-        av_log(s->avctx, AV_LOG_ERROR, "spatial_decomposition_count %d too large for size", s->spatial_decomposition_count);
-        return -1;
-    }
-
-    if (s->chroma_h_shift != 1 || s->chroma_v_shift != 1) {
-        av_log(s->avctx, AV_LOG_ERROR, "Invalid chroma shift\n");
-        return AVERROR_PATCHWELCOME;
-    }
-
-    s->qlog           += get_symbol(&s->c, s->header_state, 1);
-    s->mv_scale       += get_symbol(&s->c, s->header_state, 1);
-    s->qbias          += get_symbol(&s->c, s->header_state, 1);
-    s->block_max_depth+= get_symbol(&s->c, s->header_state, 1);
-    if(s->block_max_depth > 1 || s->block_max_depth < 0){
-        av_log(s->avctx, AV_LOG_ERROR, "block_max_depth= %d is too large", s->block_max_depth);
-        s->block_max_depth= 0;
-        return -1;
-    }
-
-    return 0;
-}
-
-static av_cold int decode_init(AVCodecContext *avctx)
-{
-    int ret;
-
-    avctx->pix_fmt= AV_PIX_FMT_YUV420P;
-
-    if ((ret = ff_snow_common_init(avctx)) < 0) {
-        ff_snow_common_end(avctx->priv_data);
-        return ret;
-    }
-
-    return 0;
-}
-
-static int decode_blocks(SnowContext *s){
-    int x, y;
-    int w= s->b_width;
-    int h= s->b_height;
-    int res;
-
-    for(y=0; y<h; y++){
-        for(x=0; x<w; x++){
-            if ((res = decode_q_branch(s, 0, x, y)) < 0)
-                return res;
-        }
-    }
-    return 0;
-}
-
-static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
-                        AVPacket *avpkt)
-{
-    const uint8_t *buf = avpkt->data;
-    int buf_size = avpkt->size;
-    SnowContext *s = avctx->priv_data;
-    RangeCoder * const c= &s->c;
-    int bytes_read;
-    AVFrame *picture = data;
-    int level, orientation, plane_index;
-    int res;
-
-    ff_init_range_decoder(c, buf, buf_size);
-    ff_build_rac_states(c, 0.05*(1LL<<32), 256-8);
-
-    s->current_picture.pict_type= AV_PICTURE_TYPE_I; //FIXME I vs. P
-    if(decode_header(s)<0)
-        return -1;
-    ff_snow_common_init_after_header(avctx);
-
-    // realloc slice buffer for the case that spatial_decomposition_count changed
-    ff_slice_buffer_destroy(&s->sb);
-    if ((res = ff_slice_buffer_init(&s->sb, s->plane[0].height,
-                                    (MB_SIZE >> s->block_max_depth) +
-                                    s->spatial_decomposition_count * 8 + 1,
-                                    s->plane[0].width,
-                                    s->spatial_idwt_buffer)) < 0)
-        return res;
-
-    for(plane_index=0; plane_index<3; plane_index++){
-        Plane *p= &s->plane[plane_index];
-        p->fast_mc= p->diag_mc && p->htaps==6 && p->hcoeff[0]==40
-                                              && p->hcoeff[1]==-10
-                                              && p->hcoeff[2]==2;
-    }
-
-    ff_snow_alloc_blocks(s);
-
-    if(ff_snow_frame_start(s) < 0)
-        return -1;
-    //keyframe flag duplication mess FIXME
-    if(avctx->debug&FF_DEBUG_PICT_INFO)
-        av_log(avctx, AV_LOG_ERROR, "keyframe:%d qlog:%d\n", s->keyframe, s->qlog);
-
-    if ((res = decode_blocks(s)) < 0)
-        return res;
-
-    for(plane_index=0; plane_index<3; plane_index++){
-        Plane *p= &s->plane[plane_index];
-        int w= p->width;
-        int h= p->height;
-        int x, y;
-        int decode_state[MAX_DECOMPOSITIONS][4][1]; /* Stored state info for unpack_coeffs. 1 variable per instance. */
-
-        if(s->avctx->debug&2048){
-            memset(s->spatial_dwt_buffer, 0, sizeof(DWTELEM)*w*h);
-            predict_plane(s, s->spatial_idwt_buffer, plane_index, 1);
-
-            for(y=0; y<h; y++){
-                for(x=0; x<w; x++){
-                    int v= s->current_picture.data[plane_index][y*s->current_picture.linesize[plane_index] + x];
-                    s->mconly_picture.data[plane_index][y*s->mconly_picture.linesize[plane_index] + x]= v;
-                }
-            }
-        }
-
-        {
-        for(level=0; level<s->spatial_decomposition_count; level++){
-            for(orientation=level ? 1 : 0; orientation<4; orientation++){
-                SubBand *b= &p->band[level][orientation];
-                unpack_coeffs(s, b, b->parent, orientation);
-            }
-        }
-        }
-
-        {
-        const int mb_h= s->b_height << s->block_max_depth;
-        const int block_size = MB_SIZE >> s->block_max_depth;
-        const int block_w    = plane_index ? block_size/2 : block_size;
-        int mb_y;
-        DWTCompose cs[MAX_DECOMPOSITIONS];
-        int yd=0, yq=0;
-        int y;
-        int end_y;
-
-        ff_spatial_idwt_buffered_init(cs, &s->sb, w, h, 1, s->spatial_decomposition_type, s->spatial_decomposition_count);
-        for(mb_y=0; mb_y<=mb_h; mb_y++){
-
-            int slice_starty = block_w*mb_y;
-            int slice_h = block_w*(mb_y+1);
-            if (!(s->keyframe || s->avctx->debug&512)){
-                slice_starty = FFMAX(0, slice_starty - (block_w >> 1));
-                slice_h -= (block_w >> 1);
-            }
-
-            for(level=0; level<s->spatial_decomposition_count; level++){
-                for(orientation=level ? 1 : 0; orientation<4; orientation++){
-                    SubBand *b= &p->band[level][orientation];
-                    int start_y;
-                    int end_y;
-                    int our_mb_start = mb_y;
-                    int our_mb_end = (mb_y + 1);
-                    const int extra= 3;
-                    start_y = (mb_y ? ((block_w * our_mb_start) >> (s->spatial_decomposition_count - level)) + s->spatial_decomposition_count - level + extra: 0);
-                    end_y = (((block_w * our_mb_end) >> (s->spatial_decomposition_count - level)) + s->spatial_decomposition_count - level + extra);
-                    if (!(s->keyframe || s->avctx->debug&512)){
-                        start_y = FFMAX(0, start_y - (block_w >> (1+s->spatial_decomposition_count - level)));
-                        end_y = FFMAX(0, end_y - (block_w >> (1+s->spatial_decomposition_count - level)));
-                    }
-                    start_y = FFMIN(b->height, start_y);
-                    end_y = FFMIN(b->height, end_y);
-
-                    if (start_y != end_y){
-                        if (orientation == 0){
-                            SubBand * correlate_band = &p->band[0][0];
-                            int correlate_end_y = FFMIN(b->height, end_y + 1);
-                            int correlate_start_y = FFMIN(b->height, (start_y ? start_y + 1 : 0));
-                            decode_subband_slice_buffered(s, correlate_band, &s->sb, correlate_start_y, correlate_end_y, decode_state[0][0]);
-                            correlate_slice_buffered(s, &s->sb, correlate_band, correlate_band->ibuf, correlate_band->stride, 1, 0, correlate_start_y, correlate_end_y);
-                            dequantize_slice_buffered(s, &s->sb, correlate_band, correlate_band->ibuf, correlate_band->stride, start_y, end_y);
-                        }
-                        else
-                            decode_subband_slice_buffered(s, b, &s->sb, start_y, end_y, decode_state[level][orientation]);
-                    }
-                }
-            }
-
-            for(; yd<slice_h; yd+=4){
-                ff_spatial_idwt_buffered_slice(&s->dwt, cs, &s->sb, s->temp_idwt_buffer, w, h, 1, s->spatial_decomposition_type, s->spatial_decomposition_count, yd);
-            }
-
-            if(s->qlog == LOSSLESS_QLOG){
-                for(; yq<slice_h && yq<h; yq++){
-                    IDWTELEM * line = slice_buffer_get_line(&s->sb, yq);
-                    for(x=0; x<w; x++){
-                        line[x] <<= FRAC_BITS;
-                    }
-                }
-            }
-
-            predict_slice_buffered(s, &s->sb, s->spatial_idwt_buffer, plane_index, 1, mb_y);
-
-            y = FFMIN(p->height, slice_starty);
-            end_y = FFMIN(p->height, slice_h);
-            while(y < end_y)
-                ff_slice_buffer_release(&s->sb, y++);
-        }
-
-        ff_slice_buffer_flush(&s->sb);
-        }
-
-    }
-
-    emms_c();
-
-    ff_snow_release_buffer(avctx);
-
-    if(!(s->avctx->debug&2048))
-        *picture= s->current_picture;
-    else
-        *picture= s->mconly_picture;
-
-    *got_frame = 1;
-
-    bytes_read= c->bytestream - c->bytestream_start;
-    if(bytes_read ==0) av_log(s->avctx, AV_LOG_ERROR, "error at end of frame\n"); //FIXME
-
-    return bytes_read;
-}
-
-static av_cold int decode_end(AVCodecContext *avctx)
-{
-    SnowContext *s = avctx->priv_data;
-
-    ff_slice_buffer_destroy(&s->sb);
-
-    ff_snow_common_end(s);
-
-    return 0;
-}
-
-AVCodec ff_snow_decoder = {
-    .name           = "snow",
-    .type           = AVMEDIA_TYPE_VIDEO,
-    .id             = AV_CODEC_ID_SNOW,
-    .priv_data_size = sizeof(SnowContext),
-    .init           = decode_init,
-    .close          = decode_end,
-    .decode         = decode_frame,
-    .capabilities   = CODEC_CAP_DR1 /*| CODEC_CAP_DRAW_HORIZ_BAND*/,
-    .long_name      = NULL_IF_CONFIG_SMALL("Snow"),
-};
diff --git a/libavcodec/snowenc.c b/libavcodec/snowenc.c
deleted file mode 100644
index f93c53f145..0000000000
--- a/libavcodec/snowenc.c
+++ /dev/null
@@ -1,1939 +0,0 @@
-/*
- * Copyright (C) 2004 Michael Niedermayer <michaelni@gmx.at>
- *
- * This file is part of Libav.
- *
- * Libav is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * Libav is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with Libav; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-#include "libavutil/intmath.h"
-#include "libavutil/log.h"
-#include "libavutil/opt.h"
-#include "avcodec.h"
-#include "dsputil.h"
-#include "internal.h"
-#include "dwt.h"
-#include "snow.h"
-
-#include "rangecoder.h"
-#include "mathops.h"
-
-#include "mpegvideo.h"
-#include "h263.h"
-
-#undef NDEBUG
-#include <assert.h>
-
-#define QUANTIZE2 0
-
-#if QUANTIZE2==1
-#define Q2_STEP 8
-
-static void find_sse(SnowContext *s, Plane *p, int *score, int score_stride, IDWTELEM *r0, IDWTELEM *r1, int level, int orientation){
-    SubBand *b= &p->band[level][orientation];
-    int x, y;
-    int xo=0;
-    int yo=0;
-    int step= 1 << (s->spatial_decomposition_count - level);
-
-    if(orientation&1)
-        xo= step>>1;
-    if(orientation&2)
-        yo= step>>1;
-
-    //FIXME bias for nonzero ?
-    //FIXME optimize
-    memset(score, 0, sizeof(*score)*score_stride*((p->height + Q2_STEP-1)/Q2_STEP));
-    for(y=0; y<p->height; y++){
-        for(x=0; x<p->width; x++){
-            int sx= (x-xo + step/2) / step / Q2_STEP;
-            int sy= (y-yo + step/2) / step / Q2_STEP;
-            int v= r0[x + y*p->width] - r1[x + y*p->width];
-            assert(sx>=0 && sy>=0 && sx < score_stride);
-            v= ((v+8)>>4)<<4;
-            score[sx + sy*score_stride] += v*v;
-            assert(score[sx + sy*score_stride] >= 0);
-        }
-    }
-}
-
-static void dequantize_all(SnowContext *s, Plane *p, IDWTELEM *buffer, int width, int height){
-    int level, orientation;
-
-    for(level=0; level<s->spatial_decomposition_count; level++){
-        for(orientation=level ? 1 : 0; orientation<4; orientation++){
-            SubBand *b= &p->band[level][orientation];
-            IDWTELEM *dst= buffer + (b->ibuf - s->spatial_idwt_buffer);
-
-            dequantize(s, b, dst, b->stride);
-        }
-    }
-}
-
-static void dwt_quantize(SnowContext *s, Plane *p, DWTELEM *buffer, int width, int height, int stride, int type){
-    int level, orientation, ys, xs, x, y, pass;
-    IDWTELEM best_dequant[height * stride];
-    IDWTELEM idwt2_buffer[height * stride];
-    const int score_stride= (width + 10)/Q2_STEP;
-    int best_score[(width + 10)/Q2_STEP * (height + 10)/Q2_STEP]; //FIXME size
-    int score[(width + 10)/Q2_STEP * (height + 10)/Q2_STEP]; //FIXME size
-    int threshold= (s->m.lambda * s->m.lambda) >> 6;
-
-    //FIXME pass the copy cleanly ?
-
-//    memcpy(dwt_buffer, buffer, height * stride * sizeof(DWTELEM));
-    ff_spatial_dwt(buffer, s->temp_dwt_buffer, width, height, stride, type, s->spatial_decomposition_count);
-
-    for(level=0; level<s->spatial_decomposition_count; level++){
-        for(orientation=level ? 1 : 0; orientation<4; orientation++){
-            SubBand *b= &p->band[level][orientation];
-            IDWTELEM *dst= best_dequant + (b->ibuf - s->spatial_idwt_buffer);
-             DWTELEM *src=       buffer + (b-> buf - s->spatial_dwt_buffer);
-            assert(src == b->buf); // code does not depend on this but it is true currently
-
-            quantize(s, b, dst, src, b->stride, s->qbias);
-        }
-    }
-    for(pass=0; pass<1; pass++){
-        if(s->qbias == 0) //keyframe
-            continue;
-        for(level=0; level<s->spatial_decomposition_count; level++){
-            for(orientation=level ? 1 : 0; orientation<4; orientation++){
-                SubBand *b= &p->band[level][orientation];
-                IDWTELEM *dst= idwt2_buffer + (b->ibuf - s->spatial_idwt_buffer);
-                IDWTELEM *best_dst= best_dequant + (b->ibuf - s->spatial_idwt_buffer);
-
-                for(ys= 0; ys<Q2_STEP; ys++){
-                    for(xs= 0; xs<Q2_STEP; xs++){
-                        memcpy(idwt2_buffer, best_dequant, height * stride * sizeof(IDWTELEM));
-                        dequantize_all(s, p, idwt2_buffer, width, height);
-                        ff_spatial_idwt(idwt2_buffer, s->temp_idwt_buffer, width, height, stride, type, s->spatial_decomposition_count);
-                        find_sse(s, p, best_score, score_stride, idwt2_buffer, s->spatial_idwt_buffer, level, orientation);
-                        memcpy(idwt2_buffer, best_dequant, height * stride * sizeof(IDWTELEM));
-                        for(y=ys; y<b->height; y+= Q2_STEP){
-                            for(x=xs; x<b->width; x+= Q2_STEP){
-                                if(dst[x + y*b->stride]<0) dst[x + y*b->stride]++;
-                                if(dst[x + y*b->stride]>0) dst[x + y*b->stride]--;
-                                //FIXME try more than just --
-                            }
-                        }
-                        dequantize_all(s, p, idwt2_buffer, width, height);
-                        ff_spatial_idwt(idwt2_buffer, s->temp_idwt_buffer, width, height, stride, type, s->spatial_decomposition_count);
-                        find_sse(s, p, score, score_stride, idwt2_buffer, s->spatial_idwt_buffer, level, orientation);
-                        for(y=ys; y<b->height; y+= Q2_STEP){
-                            for(x=xs; x<b->width; x+= Q2_STEP){
-                                int score_idx= x/Q2_STEP + (y/Q2_STEP)*score_stride;
-                                if(score[score_idx] <= best_score[score_idx] + threshold){
-                                    best_score[score_idx]= score[score_idx];
-                                    if(best_dst[x + y*b->stride]<0) best_dst[x + y*b->stride]++;
-                                    if(best_dst[x + y*b->stride]>0) best_dst[x + y*b->stride]--;
-                                    //FIXME copy instead
-                                }
-                            }
-                        }
-                    }
-                }
-            }
-        }
-    }
-    memcpy(s->spatial_idwt_buffer, best_dequant, height * stride * sizeof(IDWTELEM)); //FIXME work with that directly instead of copy at the end
-}
-
-#endif /* QUANTIZE2==1 */
-
-static av_cold int encode_init(AVCodecContext *avctx)
-{
-    SnowContext *s = avctx->priv_data;
-    int plane_index, ret;
-
-    if(avctx->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL){
-        av_log(avctx, AV_LOG_ERROR, "This codec is under development, files encoded with it may not be decodable with future versions!!!\n"
-               "Use vstrict=-2 / -strict -2 to use it anyway.\n");
-        return -1;
-    }
-
-    if(avctx->prediction_method == DWT_97
-       && (avctx->flags & CODEC_FLAG_QSCALE)
-       && avctx->global_quality == 0){
-        av_log(avctx, AV_LOG_ERROR, "The 9/7 wavelet is incompatible with lossless mode.\n");
-        return -1;
-    }
-
-    s->spatial_decomposition_type= avctx->prediction_method; //FIXME add decorrelator type r transform_type
-
-    s->mv_scale       = (avctx->flags & CODEC_FLAG_QPEL) ? 2 : 4;
-    s->block_max_depth= (avctx->flags & CODEC_FLAG_4MV ) ? 1 : 0;
-
-    for(plane_index=0; plane_index<3; plane_index++){
-        s->plane[plane_index].diag_mc= 1;
-        s->plane[plane_index].htaps= 6;
-        s->plane[plane_index].hcoeff[0]=  40;
-        s->plane[plane_index].hcoeff[1]= -10;
-        s->plane[plane_index].hcoeff[2]=   2;
-        s->plane[plane_index].fast_mc= 1;
-    }
-
-    if ((ret = ff_snow_common_init(avctx)) < 0) {
-        ff_snow_common_end(avctx->priv_data);
-        return ret;
-    }
-    ff_snow_alloc_blocks(s);
-
-    s->version=0;
-
-    s->m.avctx   = avctx;
-    s->m.flags   = avctx->flags;
-    s->m.bit_rate= avctx->bit_rate;
-
-    s->m.me.temp      =
-    s->m.me.scratchpad= av_mallocz((avctx->width+64)*2*16*2*sizeof(uint8_t));
-    s->m.me.map       = av_mallocz(ME_MAP_SIZE*sizeof(uint32_t));
-    s->m.me.score_map = av_mallocz(ME_MAP_SIZE*sizeof(uint32_t));
-    s->m.obmc_scratchpad= av_mallocz(MB_SIZE*MB_SIZE*12*sizeof(uint32_t));
-    ff_h263_encode_init(&s->m); //mv_penalty
-
-    s->max_ref_frames = FFMAX(FFMIN(avctx->refs, MAX_REF_FRAMES), 1);
-
-    if(avctx->flags&CODEC_FLAG_PASS1){
-        if(!avctx->stats_out)
-            avctx->stats_out = av_mallocz(256);
-    }
-    if((avctx->flags&CODEC_FLAG_PASS2) || !(avctx->flags&CODEC_FLAG_QSCALE)){
-        if(ff_rate_control_init(&s->m) < 0)
-            return -1;
-    }
-    s->pass1_rc= !(avctx->flags & (CODEC_FLAG_QSCALE|CODEC_FLAG_PASS2));
-
-    avctx->coded_frame= &s->current_picture;
-    switch(avctx->pix_fmt){
-//    case AV_PIX_FMT_YUV444P:
-//    case AV_PIX_FMT_YUV422P:
-    case AV_PIX_FMT_YUV420P:
-    case AV_PIX_FMT_GRAY8:
-//    case AV_PIX_FMT_YUV411P:
-//    case AV_PIX_FMT_YUV410P:
-        s->colorspace_type= 0;
-        break;
-/*    case AV_PIX_FMT_RGB32:
-        s->colorspace= 1;
-        break;*/
-    default:
-        av_log(avctx, AV_LOG_ERROR, "pixel format not supported\n");
-        return -1;
-    }
-//    avcodec_get_chroma_sub_sample(avctx->pix_fmt, &s->chroma_h_shift, &s->chroma_v_shift);
-    s->chroma_h_shift= 1;
-    s->chroma_v_shift= 1;
-
-    ff_set_cmp(&s->dsp, s->dsp.me_cmp, s->avctx->me_cmp);
-    ff_set_cmp(&s->dsp, s->dsp.me_sub_cmp, s->avctx->me_sub_cmp);
-
-    ff_get_buffer(s->avctx, &s->input_picture);
-
-    if(s->avctx->me_method == ME_ITER){
-        int i;
-        int size= s->b_width * s->b_height << 2*s->block_max_depth;
-        for(i=0; i<s->max_ref_frames; i++){
-            s->ref_mvs[i]= av_mallocz(size*sizeof(int16_t[2]));
-            s->ref_scores[i]= av_mallocz(size*sizeof(uint32_t));
-        }
-    }
-
-    return 0;
-}
-
-//near copy & paste from dsputil, FIXME
-static int pix_sum(uint8_t * pix, int line_size, int w)
-{
-    int s, i, j;
-
-    s = 0;
-    for (i = 0; i < w; i++) {
-        for (j = 0; j < w; j++) {
-            s += pix[0];
-            pix ++;
-        }
-        pix += line_size - w;
-    }
-    return s;
-}
-
-//near copy & paste from dsputil, FIXME
-static int pix_norm1(uint8_t * pix, int line_size, int w)
-{
-    int s, i, j;
-    uint32_t *sq = ff_squareTbl + 256;
-
-    s = 0;
-    for (i = 0; i < w; i++) {
-        for (j = 0; j < w; j ++) {
-            s += sq[pix[0]];
-            pix ++;
-        }
-        pix += line_size - w;
-    }
-    return s;
-}
-
-//FIXME copy&paste
-#define P_LEFT P[1]
-#define P_TOP P[2]
-#define P_TOPRIGHT P[3]
-#define P_MEDIAN P[4]
-#define P_MV1 P[9]
-#define FLAG_QPEL   1 //must be 1
-
-static int encode_q_branch(SnowContext *s, int level, int x, int y){
-    uint8_t p_buffer[1024];
-    uint8_t i_buffer[1024];
-    uint8_t p_state[sizeof(s->block_state)];
-    uint8_t i_state[sizeof(s->block_state)];
-    RangeCoder pc, ic;
-    uint8_t *pbbak= s->c.bytestream;
-    uint8_t *pbbak_start= s->c.bytestream_start;
-    int score, score2, iscore, i_len, p_len, block_s, sum, base_bits;
-    const int w= s->b_width  << s->block_max_depth;
-    const int h= s->b_height << s->block_max_depth;
-    const int rem_depth= s->block_max_depth - level;
-    const int index= (x + y*w) << rem_depth;
-    const int block_w= 1<<(LOG2_MB_SIZE - level);
-    int trx= (x+1)<<rem_depth;
-    int try= (y+1)<<rem_depth;
-    const BlockNode *left  = x ? &s->block[index-1] : &null_block;
-    const BlockNode *top   = y ? &s->block[index-w] : &null_block;
-    const BlockNode *right = trx<w ? &s->block[index+1] : &null_block;
-    const BlockNode *bottom= try<h ? &s->block[index+w] : &null_block;
-    const BlockNode *tl    = y && x ? &s->block[index-w-1] : left;
-    const BlockNode *tr    = y && trx<w && ((x&1)==0 || level==0) ? &s->block[index-w+(1<<rem_depth)] : tl; //FIXME use lt
-    int pl = left->color[0];
-    int pcb= left->color[1];
-    int pcr= left->color[2];
-    int pmx, pmy;
-    int mx=0, my=0;
-    int l,cr,cb;
-    const int stride= s->current_picture.linesize[0];
-    const int uvstride= s->current_picture.linesize[1];
-    uint8_t *current_data[3]= { s->input_picture.data[0] + (x + y*  stride)*block_w,
-                                s->input_picture.data[1] + (x + y*uvstride)*block_w/2,
-                                s->input_picture.data[2] + (x + y*uvstride)*block_w/2};
-    int P[10][2];
-    int16_t last_mv[3][2];
-    int qpel= !!(s->avctx->flags & CODEC_FLAG_QPEL); //unused
-    const int shift= 1+qpel;
-    MotionEstContext *c= &s->m.me;
-    int ref_context= av_log2(2*left->ref) + av_log2(2*top->ref);
-    int mx_context= av_log2(2*FFABS(left->mx - top->mx));
-    int my_context= av_log2(2*FFABS(left->my - top->my));
-    int s_context= 2*left->level + 2*top->level + tl->level + tr->level;
-    int ref, best_ref, ref_score, ref_mx, ref_my;
-
-    assert(sizeof(s->block_state) >= 256);
-    if(s->keyframe){
-        set_blocks(s, level, x, y, pl, pcb, pcr, 0, 0, 0, BLOCK_INTRA);
-        return 0;
-    }
-
-//    clip predictors / edge ?
-
-    P_LEFT[0]= left->mx;
-    P_LEFT[1]= left->my;
-    P_TOP [0]= top->mx;
-    P_TOP [1]= top->my;
-    P_TOPRIGHT[0]= tr->mx;
-    P_TOPRIGHT[1]= tr->my;
-
-    last_mv[0][0]= s->block[index].mx;
-    last_mv[0][1]= s->block[index].my;
-    last_mv[1][0]= right->mx;
-    last_mv[1][1]= right->my;
-    last_mv[2][0]= bottom->mx;
-    last_mv[2][1]= bottom->my;
-
-    s->m.mb_stride=2;
-    s->m.mb_x=
-    s->m.mb_y= 0;
-    c->skip= 0;
-
-    assert(c->  stride ==   stride);
-    assert(c->uvstride == uvstride);
-
-    c->penalty_factor    = get_penalty_factor(s->lambda, s->lambda2, c->avctx->me_cmp);
-    c->sub_penalty_factor= get_penalty_factor(s->lambda, s->lambda2, c->avctx->me_sub_cmp);
-    c->mb_penalty_factor = get_penalty_factor(s->lambda, s->lambda2, c->avctx->mb_cmp);
-    c->current_mv_penalty= c->mv_penalty[s->m.f_code=1] + MAX_MV;
-
-    c->xmin = - x*block_w - 16+3;
-    c->ymin = - y*block_w - 16+3;
-    c->xmax = - (x+1)*block_w + (w<<(LOG2_MB_SIZE - s->block_max_depth)) + 16-3;
-    c->ymax = - (y+1)*block_w + (h<<(LOG2_MB_SIZE - s->block_max_depth)) + 16-3;
-
-    if(P_LEFT[0]     > (c->xmax<<shift)) P_LEFT[0]    = (c->xmax<<shift);
-    if(P_LEFT[1]     > (c->ymax<<shift)) P_LEFT[1]    = (c->ymax<<shift);
-    if(P_TOP[0]      > (c->xmax<<shift)) P_TOP[0]     = (c->xmax<<shift);
-    if(P_TOP[1]      > (c->ymax<<shift)) P_TOP[1]     = (c->ymax<<shift);
-    if(P_TOPRIGHT[0] < (c->xmin<<shift)) P_TOPRIGHT[0]= (c->xmin<<shift);
-    if(P_TOPRIGHT[0] > (c->xmax<<shift)) P_TOPRIGHT[0]= (c->xmax<<shift); //due to pmx no clip
-    if(P_TOPRIGHT[1] > (c->ymax<<shift)) P_TOPRIGHT[1]= (c->ymax<<shift);
-
-    P_MEDIAN[0]= mid_pred(P_LEFT[0], P_TOP[0], P_TOPRIGHT[0]);
-    P_MEDIAN[1]= mid_pred(P_LEFT[1], P_TOP[1], P_TOPRIGHT[1]);
-
-    if (!y) {
-        c->pred_x= P_LEFT[0];
-        c->pred_y= P_LEFT[1];
-    } else {
-        c->pred_x = P_MEDIAN[0];
-        c->pred_y = P_MEDIAN[1];
-    }
-
-    score= INT_MAX;
-    best_ref= 0;
-    for(ref=0; ref<s->ref_frames; ref++){
-        init_ref(c, current_data, s->last_picture[ref].data, NULL, block_w*x, block_w*y, 0);
-
-        ref_score= ff_epzs_motion_search(&s->m, &ref_mx, &ref_my, P, 0, /*ref_index*/ 0, last_mv,
-                                         (1<<16)>>shift, level-LOG2_MB_SIZE+4, block_w);
-
-        assert(ref_mx >= c->xmin);
-        assert(ref_mx <= c->xmax);
-        assert(ref_my >= c->ymin);
-        assert(ref_my <= c->ymax);
-
-        ref_score= c->sub_motion_search(&s->m, &ref_mx, &ref_my, ref_score, 0, 0, level-LOG2_MB_SIZE+4, block_w);
-        ref_score= ff_get_mb_score(&s->m, ref_mx, ref_my, 0, 0, level-LOG2_MB_SIZE+4, block_w, 0);
-        ref_score+= 2*av_log2(2*ref)*c->penalty_factor;
-        if(s->ref_mvs[ref]){
-            s->ref_mvs[ref][index][0]= ref_mx;
-            s->ref_mvs[ref][index][1]= ref_my;
-            s->ref_scores[ref][index]= ref_score;
-        }
-        if(score > ref_score){
-            score= ref_score;
-            best_ref= ref;
-            mx= ref_mx;
-            my= ref_my;
-        }
-    }
-    //FIXME if mb_cmp != SSE then intra cannot be compared currently and mb_penalty vs. lambda2
-
-  //  subpel search
-    base_bits= get_rac_count(&s->c) - 8*(s->c.bytestream - s->c.bytestream_start);
-    pc= s->c;
-    pc.bytestream_start=
-    pc.bytestream= p_buffer; //FIXME end/start? and at the other stoo
-    memcpy(p_state, s->block_state, sizeof(s->block_state));
-
-    if(level!=s->block_max_depth)
-        put_rac(&pc, &p_state[4 + s_context], 1);
-    put_rac(&pc, &p_state[1 + left->type + top->type], 0);
-    if(s->ref_frames > 1)
-        put_symbol(&pc, &p_state[128 + 1024 + 32*ref_context], best_ref, 0);
-    pred_mv(s, &pmx, &pmy, best_ref, left, top, tr);
-    put_symbol(&pc, &p_state[128 + 32*(mx_context + 16*!!best_ref)], mx - pmx, 1);
-    put_symbol(&pc, &p_state[128 + 32*(my_context + 16*!!best_ref)], my - pmy, 1);
-    p_len= pc.bytestream - pc.bytestream_start;
-    score += (s->lambda2*(get_rac_count(&pc)-base_bits))>>FF_LAMBDA_SHIFT;
-
-    block_s= block_w*block_w;
-    sum = pix_sum(current_data[0], stride, block_w);
-    l= (sum + block_s/2)/block_s;
-    iscore = pix_norm1(current_data[0], stride, block_w) - 2*l*sum + l*l*block_s;
-
-    block_s= block_w*block_w>>2;
-    sum = pix_sum(current_data[1], uvstride, block_w>>1);
-    cb= (sum + block_s/2)/block_s;
-//    iscore += pix_norm1(&current_mb[1][0], uvstride, block_w>>1) - 2*cb*sum + cb*cb*block_s;
-    sum = pix_sum(current_data[2], uvstride, block_w>>1);
-    cr= (sum + block_s/2)/block_s;
-//    iscore += pix_norm1(&current_mb[2][0], uvstride, block_w>>1) - 2*cr*sum + cr*cr*block_s;
-
-    ic= s->c;
-    ic.bytestream_start=
-    ic.bytestream= i_buffer; //FIXME end/start? and at the other stoo
-    memcpy(i_state, s->block_state, sizeof(s->block_state));
-    if(level!=s->block_max_depth)
-        put_rac(&ic, &i_state[4 + s_context], 1);
-    put_rac(&ic, &i_state[1 + left->type + top->type], 1);
-    put_symbol(&ic, &i_state[32],  l-pl , 1);
-    put_symbol(&ic, &i_state[64], cb-pcb, 1);
-    put_symbol(&ic, &i_state[96], cr-pcr, 1);
-    i_len= ic.bytestream - ic.bytestream_start;
-    iscore += (s->lambda2*(get_rac_count(&ic)-base_bits))>>FF_LAMBDA_SHIFT;
-
-//    assert(score==256*256*256*64-1);
-    assert(iscore < 255*255*256 + s->lambda2*10);
-    assert(iscore >= 0);
-    assert(l>=0 && l<=255);
-    assert(pl>=0 && pl<=255);
-
-    if(level==0){
-        int varc= iscore >> 8;
-        int vard= score >> 8;
-        if (vard <= 64 || vard < varc)
-            c->scene_change_score+= ff_sqrt(vard) - ff_sqrt(varc);
-        else
-            c->scene_change_score+= s->m.qscale;
-    }
-
-    if(level!=s->block_max_depth){
-        put_rac(&s->c, &s->block_state[4 + s_context], 0);
-        score2 = encode_q_branch(s, level+1, 2*x+0, 2*y+0);
-        score2+= encode_q_branch(s, level+1, 2*x+1, 2*y+0);
-        score2+= encode_q_branch(s, level+1, 2*x+0, 2*y+1);
-        score2+= encode_q_branch(s, level+1, 2*x+1, 2*y+1);
-        score2+= s->lambda2>>FF_LAMBDA_SHIFT; //FIXME exact split overhead
-
-        if(score2 < score && score2 < iscore)
-            return score2;
-    }
-
-    if(iscore < score){
-        pred_mv(s, &pmx, &pmy, 0, left, top, tr);
-        memcpy(pbbak, i_buffer, i_len);
-        s->c= ic;
-        s->c.bytestream_start= pbbak_start;
-        s->c.bytestream= pbbak + i_len;
-        set_blocks(s, level, x, y, l, cb, cr, pmx, pmy, 0, BLOCK_INTRA);
-        memcpy(s->block_state, i_state, sizeof(s->block_state));
-        return iscore;
-    }else{
-        memcpy(pbbak, p_buffer, p_len);
-        s->c= pc;
-        s->c.bytestream_start= pbbak_start;
-        s->c.bytestream= pbbak + p_len;
-        set_blocks(s, level, x, y, pl, pcb, pcr, mx, my, best_ref, 0);
-        memcpy(s->block_state, p_state, sizeof(s->block_state));
-        return score;
-    }
-}
-
-static void encode_q_branch2(SnowContext *s, int level, int x, int y){
-    const int w= s->b_width  << s->block_max_depth;
-    const int rem_depth= s->block_max_depth - level;
-    const int index= (x + y*w) << rem_depth;
-    int trx= (x+1)<<rem_depth;
-    BlockNode *b= &s->block[index];
-    const BlockNode *left  = x ? &s->block[index-1] : &null_block;
-    const BlockNode *top   = y ? &s->block[index-w] : &null_block;
-    const BlockNode *tl    = y && x ? &s->block[index-w-1] : left;
-    const BlockNode *tr    = y && trx<w && ((x&1)==0 || level==0) ? &s->block[index-w+(1<<rem_depth)] : tl; //FIXME use lt
-    int pl = left->color[0];
-    int pcb= left->color[1];
-    int pcr= left->color[2];
-    int pmx, pmy;
-    int ref_context= av_log2(2*left->ref) + av_log2(2*top->ref);
-    int mx_context= av_log2(2*FFABS(left->mx - top->mx)) + 16*!!b->ref;
-    int my_context= av_log2(2*FFABS(left->my - top->my)) + 16*!!b->ref;
-    int s_context= 2*left->level + 2*top->level + tl->level + tr->level;
-
-    if(s->keyframe){
-        set_blocks(s, level, x, y, pl, pcb, pcr, 0, 0, 0, BLOCK_INTRA);
-        return;
-    }
-
-    if(level!=s->block_max_depth){
-        if(same_block(b,b+1) && same_block(b,b+w) && same_block(b,b+w+1)){
-            put_rac(&s->c, &s->block_state[4 + s_context], 1);
-        }else{
-            put_rac(&s->c, &s->block_state[4 + s_context], 0);
-            encode_q_branch2(s, level+1, 2*x+0, 2*y+0);
-            encode_q_branch2(s, level+1, 2*x+1, 2*y+0);
-            encode_q_branch2(s, level+1, 2*x+0, 2*y+1);
-            encode_q_branch2(s, level+1, 2*x+1, 2*y+1);
-            return;
-        }
-    }
-    if(b->type & BLOCK_INTRA){
-        pred_mv(s, &pmx, &pmy, 0, left, top, tr);
-        put_rac(&s->c, &s->block_state[1 + (left->type&1) + (top->type&1)], 1);
-        put_symbol(&s->c, &s->block_state[32], b->color[0]-pl , 1);
-        put_symbol(&s->c, &s->block_state[64], b->color[1]-pcb, 1);
-        put_symbol(&s->c, &s->block_state[96], b->color[2]-pcr, 1);
-        set_blocks(s, level, x, y, b->color[0], b->color[1], b->color[2], pmx, pmy, 0, BLOCK_INTRA);
-    }else{
-        pred_mv(s, &pmx, &pmy, b->ref, left, top, tr);
-        put_rac(&s->c, &s->block_state[1 + (left->type&1) + (top->type&1)], 0);
-        if(s->ref_frames > 1)
-            put_symbol(&s->c, &s->block_state[128 + 1024 + 32*ref_context], b->ref, 0);
-        put_symbol(&s->c, &s->block_state[128 + 32*mx_context], b->mx - pmx, 1);
-        put_symbol(&s->c, &s->block_state[128 + 32*my_context], b->my - pmy, 1);
-        set_blocks(s, level, x, y, pl, pcb, pcr, b->mx, b->my, b->ref, 0);
-    }
-}
-
-static int get_dc(SnowContext *s, int mb_x, int mb_y, int plane_index){
-    int i, x2, y2;
-    Plane *p= &s->plane[plane_index];
-    const int block_size = MB_SIZE >> s->block_max_depth;
-    const int block_w    = plane_index ? block_size/2 : block_size;
-    const uint8_t *obmc  = plane_index ? ff_obmc_tab[s->block_max_depth+1] : ff_obmc_tab[s->block_max_depth];
-    const int obmc_stride= plane_index ? block_size : 2*block_size;
-    const int ref_stride= s->current_picture.linesize[plane_index];
-    uint8_t *src= s-> input_picture.data[plane_index];
-    IDWTELEM *dst= (IDWTELEM*)s->m.obmc_scratchpad + plane_index*block_size*block_size*4; //FIXME change to unsigned
-    const int b_stride = s->b_width << s->block_max_depth;
-    const int w= p->width;
-    const int h= p->height;
-    int index= mb_x + mb_y*b_stride;
-    BlockNode *b= &s->block[index];
-    BlockNode backup= *b;
-    int ab=0;
-    int aa=0;
-
-    b->type|= BLOCK_INTRA;
-    b->color[plane_index]= 0;
-    memset(dst, 0, obmc_stride*obmc_stride*sizeof(IDWTELEM));
-
-    for(i=0; i<4; i++){
-        int mb_x2= mb_x + (i &1) - 1;
-        int mb_y2= mb_y + (i>>1) - 1;
-        int x= block_w*mb_x2 + block_w/2;
-        int y= block_w*mb_y2 + block_w/2;
-
-        add_yblock(s, 0, NULL, dst + ((i&1)+(i>>1)*obmc_stride)*block_w, NULL, obmc,
-                    x, y, block_w, block_w, w, h, obmc_stride, ref_stride, obmc_stride, mb_x2, mb_y2, 0, 0, plane_index);
-
-        for(y2= FFMAX(y, 0); y2<FFMIN(h, y+block_w); y2++){
-            for(x2= FFMAX(x, 0); x2<FFMIN(w, x+block_w); x2++){
-                int index= x2-(block_w*mb_x - block_w/2) + (y2-(block_w*mb_y - block_w/2))*obmc_stride;
-                int obmc_v= obmc[index];
-                int d;
-                if(y<0) obmc_v += obmc[index + block_w*obmc_stride];
-                if(x<0) obmc_v += obmc[index + block_w];
-                if(y+block_w>h) obmc_v += obmc[index - block_w*obmc_stride];
-                if(x+block_w>w) obmc_v += obmc[index - block_w];
-                //FIXME precalculate this or simplify it somehow else
-
-                d = -dst[index] + (1<<(FRAC_BITS-1));
-                dst[index] = d;
-                ab += (src[x2 + y2*ref_stride] - (d>>FRAC_BITS)) * obmc_v;
-                aa += obmc_v * obmc_v; //FIXME precalculate this
-            }
-        }
-    }
-    *b= backup;
-
-    return av_clip(((ab<<LOG2_OBMC_MAX) + aa/2)/aa, 0, 255); //FIXME we should not need clipping
-}
-
-static inline int get_block_bits(SnowContext *s, int x, int y, int w){
-    const int b_stride = s->b_width << s->block_max_depth;
-    const int b_height = s->b_height<< s->block_max_depth;
-    int index= x + y*b_stride;
-    const BlockNode *b     = &s->block[index];
-    const BlockNode *left  = x ? &s->block[index-1] : &null_block;
-    const BlockNode *top   = y ? &s->block[index-b_stride] : &null_block;
-    const BlockNode *tl    = y && x ? &s->block[index-b_stride-1] : left;
-    const BlockNode *tr    = y && x+w<b_stride ? &s->block[index-b_stride+w] : tl;
-    int dmx, dmy;
-//  int mx_context= av_log2(2*FFABS(left->mx - top->mx));
-//  int my_context= av_log2(2*FFABS(left->my - top->my));
-
-    if(x<0 || x>=b_stride || y>=b_height)
-        return 0;
-/*
-1            0      0
-01X          1-2    1
-001XX        3-6    2-3
-0001XXX      7-14   4-7
-00001XXXX   15-30   8-15
-*/
-//FIXME try accurate rate
-//FIXME intra and inter predictors if surrounding blocks are not the same type
-    if(b->type & BLOCK_INTRA){
-        return 3+2*( av_log2(2*FFABS(left->color[0] - b->color[0]))
-                   + av_log2(2*FFABS(left->color[1] - b->color[1]))
-                   + av_log2(2*FFABS(left->color[2] - b->color[2])));
-    }else{
-        pred_mv(s, &dmx, &dmy, b->ref, left, top, tr);
-        dmx-= b->mx;
-        dmy-= b->my;
-        return 2*(1 + av_log2(2*FFABS(dmx)) //FIXME kill the 2* can be merged in lambda
-                    + av_log2(2*FFABS(dmy))
-                    + av_log2(2*b->ref));
-    }
-}
-
-static int get_block_rd(SnowContext *s, int mb_x, int mb_y, int plane_index, uint8_t (*obmc_edged)[MB_SIZE * 2]){
-    Plane *p= &s->plane[plane_index];
-    const int block_size = MB_SIZE >> s->block_max_depth;
-    const int block_w    = plane_index ? block_size/2 : block_size;
-    const int obmc_stride= plane_index ? block_size : 2*block_size;
-    const int ref_stride= s->current_picture.linesize[plane_index];
-    uint8_t *dst= s->current_picture.data[plane_index];
-    uint8_t *src= s->  input_picture.data[plane_index];
-    IDWTELEM *pred= (IDWTELEM*)s->m.obmc_scratchpad + plane_index*block_size*block_size*4;
-    uint8_t *cur = s->scratchbuf;
-    uint8_t *tmp = s->emu_edge_buffer;
-    const int b_stride = s->b_width << s->block_max_depth;
-    const int b_height = s->b_height<< s->block_max_depth;
-    const int w= p->width;
-    const int h= p->height;
-    int distortion;
-    int rate= 0;
-    const int penalty_factor= get_penalty_factor(s->lambda, s->lambda2, s->avctx->me_cmp);
-    int sx= block_w*mb_x - block_w/2;
-    int sy= block_w*mb_y - block_w/2;
-    int x0= FFMAX(0,-sx);
-    int y0= FFMAX(0,-sy);
-    int x1= FFMIN(block_w*2, w-sx);
-    int y1= FFMIN(block_w*2, h-sy);
-    int i,x,y;
-
-    ff_snow_pred_block(s, cur, tmp, ref_stride, sx, sy, block_w*2, block_w*2, &s->block[mb_x + mb_y*b_stride], plane_index, w, h);
-
-    for(y=y0; y<y1; y++){
-        const uint8_t *obmc1= obmc_edged[y];
-        const IDWTELEM *pred1 = pred + y*obmc_stride;
-        uint8_t *cur1 = cur + y*ref_stride;
-        uint8_t *dst1 = dst + sx + (sy+y)*ref_stride;
-        for(x=x0; x<x1; x++){
-#if FRAC_BITS >= LOG2_OBMC_MAX
-            int v = (cur1[x] * obmc1[x]) << (FRAC_BITS - LOG2_OBMC_MAX);
-#else
-            int v = (cur1[x] * obmc1[x] + (1<<(LOG2_OBMC_MAX - FRAC_BITS-1))) >> (LOG2_OBMC_MAX - FRAC_BITS);
-#endif
-            v = (v + pred1[x]) >> FRAC_BITS;
-            if(v&(~255)) v= ~(v>>31);
-            dst1[x] = v;
-        }
-    }
-
-    /* copy the regions where obmc[] = (uint8_t)256 */
-    if(LOG2_OBMC_MAX == 8
-        && (mb_x == 0 || mb_x == b_stride-1)
-        && (mb_y == 0 || mb_y == b_height-1)){
-        if(mb_x == 0)
-            x1 = block_w;
-        else
-            x0 = block_w;
-        if(mb_y == 0)
-            y1 = block_w;
-        else
-            y0 = block_w;
-        for(y=y0; y<y1; y++)
-            memcpy(dst + sx+x0 + (sy+y)*ref_stride, cur + x0 + y*ref_stride, x1-x0);
-    }
-
-    if(block_w==16){
-        /* FIXME rearrange dsputil to fit 32x32 cmp functions */
-        /* FIXME check alignment of the cmp wavelet vs the encoding wavelet */
-        /* FIXME cmps overlap but do not cover the wavelet's whole support.
-         * So improving the score of one block is not strictly guaranteed
-         * to improve the score of the whole frame, thus iterative motion
-         * estimation does not always converge. */
-        if(s->avctx->me_cmp == FF_CMP_W97)
-            distortion = ff_w97_32_c(&s->m, src + sx + sy*ref_stride, dst + sx + sy*ref_stride, ref_stride, 32);
-        else if(s->avctx->me_cmp == FF_CMP_W53)
-            distortion = ff_w53_32_c(&s->m, src + sx + sy*ref_stride, dst + sx + sy*ref_stride, ref_stride, 32);
-        else{
-            distortion = 0;
-            for(i=0; i<4; i++){
-                int off = sx+16*(i&1) + (sy+16*(i>>1))*ref_stride;
-                distortion += s->dsp.me_cmp[0](&s->m, src + off, dst + off, ref_stride, 16);
-            }
-        }
-    }else{
-        assert(block_w==8);
-        distortion = s->dsp.me_cmp[0](&s->m, src + sx + sy*ref_stride, dst + sx + sy*ref_stride, ref_stride, block_w*2);
-    }
-
-    if(plane_index==0){
-        for(i=0; i<4; i++){
-/* ..RRr
- * .RXx.
- * rxx..
- */
-            rate += get_block_bits(s, mb_x + (i&1) - (i>>1), mb_y + (i>>1), 1);
-        }
-        if(mb_x == b_stride-2)
-            rate += get_block_bits(s, mb_x + 1, mb_y + 1, 1);
-    }
-    return distortion + rate*penalty_factor;
-}
-
-static int get_4block_rd(SnowContext *s, int mb_x, int mb_y, int plane_index){
-    int i, y2;
-    Plane *p= &s->plane[plane_index];
-    const int block_size = MB_SIZE >> s->block_max_depth;
-    const int block_w    = plane_index ? block_size/2 : block_size;
-    const uint8_t *obmc  = plane_index ? ff_obmc_tab[s->block_max_depth+1] : ff_obmc_tab[s->block_max_depth];
-    const int obmc_stride= plane_index ? block_size : 2*block_size;
-    const int ref_stride= s->current_picture.linesize[plane_index];
-    uint8_t *dst= s->current_picture.data[plane_index];
-    uint8_t *src= s-> input_picture.data[plane_index];
-    //FIXME zero_dst is const but add_yblock changes dst if add is 0 (this is never the case for dst=zero_dst
-    // const has only been removed from zero_dst to suppress a warning
-    static IDWTELEM zero_dst[4096]; //FIXME
-    const int b_stride = s->b_width << s->block_max_depth;
-    const int w= p->width;
-    const int h= p->height;
-    int distortion= 0;
-    int rate= 0;
-    const int penalty_factor= get_penalty_factor(s->lambda, s->lambda2, s->avctx->me_cmp);
-
-    for(i=0; i<9; i++){
-        int mb_x2= mb_x + (i%3) - 1;
-        int mb_y2= mb_y + (i/3) - 1;
-        int x= block_w*mb_x2 + block_w/2;
-        int y= block_w*mb_y2 + block_w/2;
-
-        add_yblock(s, 0, NULL, zero_dst, dst, obmc,
-                   x, y, block_w, block_w, w, h, /*dst_stride*/0, ref_stride, obmc_stride, mb_x2, mb_y2, 1, 1, plane_index);
-
-        //FIXME find a cleaner/simpler way to skip the outside stuff
-        for(y2= y; y2<0; y2++)
-            memcpy(dst + x + y2*ref_stride, src + x + y2*ref_stride, block_w);
-        for(y2= h; y2<y+block_w; y2++)
-            memcpy(dst + x + y2*ref_stride, src + x + y2*ref_stride, block_w);
-        if(x<0){
-            for(y2= y; y2<y+block_w; y2++)
-                memcpy(dst + x + y2*ref_stride, src + x + y2*ref_stride, -x);
-        }
-        if(x+block_w > w){
-            for(y2= y; y2<y+block_w; y2++)
-                memcpy(dst + w + y2*ref_stride, src + w + y2*ref_stride, x+block_w - w);
-        }
-
-        assert(block_w== 8 || block_w==16);
-        distortion += s->dsp.me_cmp[block_w==8](&s->m, src + x + y*ref_stride, dst + x + y*ref_stride, ref_stride, block_w);
-    }
-
-    if(plane_index==0){
-        BlockNode *b= &s->block[mb_x+mb_y*b_stride];
-        int merged= same_block(b,b+1) && same_block(b,b+b_stride) && same_block(b,b+b_stride+1);
-
-/* ..RRRr
- * .RXXx.
- * .RXXx.
- * rxxx.
- */
-        if(merged)
-            rate = get_block_bits(s, mb_x, mb_y, 2);
-        for(i=merged?4:0; i<9; i++){
-            static const int dxy[9][2] = {{0,0},{1,0},{0,1},{1,1},{2,0},{2,1},{-1,2},{0,2},{1,2}};
-            rate += get_block_bits(s, mb_x + dxy[i][0], mb_y + dxy[i][1], 1);
-        }
-    }
-    return distortion + rate*penalty_factor;
-}
-
-static int encode_subband_c0run(SnowContext *s, SubBand *b, IDWTELEM *src, IDWTELEM *parent, int stride, int orientation){
-    const int w= b->width;
-    const int h= b->height;
-    int x, y;
-
-    if(1){
-        int run=0;
-        int *runs = s->run_buffer;
-        int run_index=0;
-        int max_index;
-
-        for(y=0; y<h; y++){
-            for(x=0; x<w; x++){
-                int v, p=0;
-                int /*ll=0, */l=0, lt=0, t=0, rt=0;
-                v= src[x + y*stride];
-
-                if(y){
-                    t= src[x + (y-1)*stride];
-                    if(x){
-                        lt= src[x - 1 + (y-1)*stride];
-                    }
-                    if(x + 1 < w){
-                        rt= src[x + 1 + (y-1)*stride];
-                    }
-                }
-                if(x){
-                    l= src[x - 1 + y*stride];
-                    /*if(x > 1){
-                        if(orientation==1) ll= src[y + (x-2)*stride];
-                        else               ll= src[x - 2 + y*stride];
-                    }*/
-                }
-                if(parent){
-                    int px= x>>1;
-                    int py= y>>1;
-                    if(px<b->parent->width && py<b->parent->height)
-                        p= parent[px + py*2*stride];
-                }
-                if(!(/*ll|*/l|lt|t|rt|p)){
-                    if(v){
-                        runs[run_index++]= run;
-                        run=0;
-                    }else{
-                        run++;
-                    }
-                }
-            }
-        }
-        max_index= run_index;
-        runs[run_index++]= run;
-        run_index=0;
-        run= runs[run_index++];
-
-        put_symbol2(&s->c, b->state[30], max_index, 0);
-        if(run_index <= max_index)
-            put_symbol2(&s->c, b->state[1], run, 3);
-
-        for(y=0; y<h; y++){
-            if(s->c.bytestream_end - s->c.bytestream < w*40){
-                av_log(s->avctx, AV_LOG_ERROR, "encoded frame too large\n");
-                return -1;
-            }
-            for(x=0; x<w; x++){
-                int v, p=0;
-                int /*ll=0, */l=0, lt=0, t=0, rt=0;
-                v= src[x + y*stride];
-
-                if(y){
-                    t= src[x + (y-1)*stride];
-                    if(x){
-                        lt= src[x - 1 + (y-1)*stride];
-                    }
-                    if(x + 1 < w){
-                        rt= src[x + 1 + (y-1)*stride];
-                    }
-                }
-                if(x){
-                    l= src[x - 1 + y*stride];
-                    /*if(x > 1){
-                        if(orientation==1) ll= src[y + (x-2)*stride];
-                        else               ll= src[x - 2 + y*stride];
-                    }*/
-                }
-                if(parent){
-                    int px= x>>1;
-                    int py= y>>1;
-                    if(px<b->parent->width && py<b->parent->height)
-                        p= parent[px + py*2*stride];
-                }
-                if(/*ll|*/l|lt|t|rt|p){
-                    int context= av_log2(/*FFABS(ll) + */3*FFABS(l) + FFABS(lt) + 2*FFABS(t) + FFABS(rt) + FFABS(p));
-
-                    put_rac(&s->c, &b->state[0][context], !!v);
-                }else{
-                    if(!run){
-                        run= runs[run_index++];
-
-                        if(run_index <= max_index)
-                            put_symbol2(&s->c, b->state[1], run, 3);
-                        assert(v);
-                    }else{
-                        run--;
-                        assert(!v);
-                    }
-                }
-                if(v){
-                    int context= av_log2(/*FFABS(ll) + */3*FFABS(l) + FFABS(lt) + 2*FFABS(t) + FFABS(rt) + FFABS(p));
-                    int l2= 2*FFABS(l) + (l<0);
-                    int t2= 2*FFABS(t) + (t<0);
-
-                    put_symbol2(&s->c, b->state[context + 2], FFABS(v)-1, context-4);
-                    put_rac(&s->c, &b->state[0][16 + 1 + 3 + ff_quant3bA[l2&0xFF] + 3*ff_quant3bA[t2&0xFF]], v<0);
-                }
-            }
-        }
-    }
-    return 0;
-}
-
-static int encode_subband(SnowContext *s, SubBand *b, IDWTELEM *src, IDWTELEM *parent, int stride, int orientation){
-//    encode_subband_qtree(s, b, src, parent, stride, orientation);
-//    encode_subband_z0run(s, b, src, parent, stride, orientation);
-    return encode_subband_c0run(s, b, src, parent, stride, orientation);
-//    encode_subband_dzr(s, b, src, parent, stride, orientation);
-}
-
-static av_always_inline int check_block(SnowContext *s, int mb_x, int mb_y, int p[3], int intra, uint8_t (*obmc_edged)[MB_SIZE * 2], int *best_rd){
-    const int b_stride= s->b_width << s->block_max_depth;
-    BlockNode *block= &s->block[mb_x + mb_y * b_stride];
-    BlockNode backup= *block;
-    unsigned value;
-    int rd, index;
-
-    assert(mb_x>=0 && mb_y>=0);
-    assert(mb_x<b_stride);
-
-    if(intra){
-        block->color[0] = p[0];
-        block->color[1] = p[1];
-        block->color[2] = p[2];
-        block->type |= BLOCK_INTRA;
-    }else{
-        index= (p[0] + 31*p[1]) & (ME_CACHE_SIZE-1);
-        value= s->me_cache_generation + (p[0]>>10) + (p[1]<<6) + (block->ref<<12);
-        if(s->me_cache[index] == value)
-            return 0;
-        s->me_cache[index]= value;
-
-        block->mx= p[0];
-        block->my= p[1];
-        block->type &= ~BLOCK_INTRA;
-    }
-
-    rd= get_block_rd(s, mb_x, mb_y, 0, obmc_edged);
-
-//FIXME chroma
-    if(rd < *best_rd){
-        *best_rd= rd;
-        return 1;
-    }else{
-        *block= backup;
-        return 0;
-    }
-}
-
-/* special case for int[2] args we discard afterwards,
- * fixes compilation problem with gcc 2.95 */
-static av_always_inline int check_block_inter(SnowContext *s, int mb_x, int mb_y, int p0, int p1, uint8_t (*obmc_edged)[MB_SIZE * 2], int *best_rd){
-    int p[2] = {p0, p1};
-    return check_block(s, mb_x, mb_y, p, 0, obmc_edged, best_rd);
-}
-
-static av_always_inline int check_4block_inter(SnowContext *s, int mb_x, int mb_y, int p0, int p1, int ref, int *best_rd){
-    const int b_stride= s->b_width << s->block_max_depth;
-    BlockNode *block= &s->block[mb_x + mb_y * b_stride];
-    BlockNode backup[4];
-    unsigned value;
-    int rd, index;
-
-    /* We don't initialize backup[] during variable declaration, because
-     * that fails to compile on MSVC: "cannot convert from 'BlockNode' to
-     * 'int16_t'". */
-    backup[0] = block[0];
-    backup[1] = block[1];
-    backup[2] = block[b_stride];
-    backup[3] = block[b_stride + 1];
-
-    assert(mb_x>=0 && mb_y>=0);
-    assert(mb_x<b_stride);
-    assert(((mb_x|mb_y)&1) == 0);
-
-    index= (p0 + 31*p1) & (ME_CACHE_SIZE-1);
-    value= s->me_cache_generation + (p0>>10) + (p1<<6) + (block->ref<<12);
-    if(s->me_cache[index] == value)
-        return 0;
-    s->me_cache[index]= value;
-
-    block->mx= p0;
-    block->my= p1;
-    block->ref= ref;
-    block->type &= ~BLOCK_INTRA;
-    block[1]= block[b_stride]= block[b_stride+1]= *block;
-
-    rd= get_4block_rd(s, mb_x, mb_y, 0);
-
-//FIXME chroma
-    if(rd < *best_rd){
-        *best_rd= rd;
-        return 1;
-    }else{
-        block[0]= backup[0];
-        block[1]= backup[1];
-        block[b_stride]= backup[2];
-        block[b_stride+1]= backup[3];
-        return 0;
-    }
-}
-
-static void iterative_me(SnowContext *s){
-    int pass, mb_x, mb_y;
-    const int b_width = s->b_width  << s->block_max_depth;
-    const int b_height= s->b_height << s->block_max_depth;
-    const int b_stride= b_width;
-    int color[3];
-
-    {
-        RangeCoder r = s->c;
-        uint8_t state[sizeof(s->block_state)];
-        memcpy(state, s->block_state, sizeof(s->block_state));
-        for(mb_y= 0; mb_y<s->b_height; mb_y++)
-            for(mb_x= 0; mb_x<s->b_width; mb_x++)
-                encode_q_branch(s, 0, mb_x, mb_y);
-        s->c = r;
-        memcpy(s->block_state, state, sizeof(s->block_state));
-    }
-
-    for(pass=0; pass<25; pass++){
-        int change= 0;
-
-        for(mb_y= 0; mb_y<b_height; mb_y++){
-            for(mb_x= 0; mb_x<b_width; mb_x++){
-                int dia_change, i, j, ref;
-                int best_rd= INT_MAX, ref_rd;
-                BlockNode backup, ref_b;
-                const int index= mb_x + mb_y * b_stride;
-                BlockNode *block= &s->block[index];
-                BlockNode *tb =                   mb_y            ? &s->block[index-b_stride  ] : NULL;
-                BlockNode *lb = mb_x                              ? &s->block[index         -1] : NULL;
-                BlockNode *rb = mb_x+1<b_width                    ? &s->block[index         +1] : NULL;
-                BlockNode *bb =                   mb_y+1<b_height ? &s->block[index+b_stride  ] : NULL;
-                BlockNode *tlb= mb_x           && mb_y            ? &s->block[index-b_stride-1] : NULL;
-                BlockNode *trb= mb_x+1<b_width && mb_y            ? &s->block[index-b_stride+1] : NULL;
-                BlockNode *blb= mb_x           && mb_y+1<b_height ? &s->block[index+b_stride-1] : NULL;
-                BlockNode *brb= mb_x+1<b_width && mb_y+1<b_height ? &s->block[index+b_stride+1] : NULL;
-                const int b_w= (MB_SIZE >> s->block_max_depth);
-                uint8_t obmc_edged[MB_SIZE * 2][MB_SIZE * 2];
-
-                if(pass && (block->type & BLOCK_OPT))
-                    continue;
-                block->type |= BLOCK_OPT;
-
-                backup= *block;
-
-                if(!s->me_cache_generation)
-                    memset(s->me_cache, 0, sizeof(s->me_cache));
-                s->me_cache_generation += 1<<22;
-
-                //FIXME precalculate
-                {
-                    int x, y;
-                    for (y = 0; y < b_w * 2; y++)
-                        memcpy(obmc_edged[y], ff_obmc_tab[s->block_max_depth] + y * b_w * 2, b_w * 2);
-                    if(mb_x==0)
-                        for(y=0; y<b_w*2; y++)
-                            memset(obmc_edged[y], obmc_edged[y][0] + obmc_edged[y][b_w-1], b_w);
-                    if(mb_x==b_stride-1)
-                        for(y=0; y<b_w*2; y++)
-                            memset(obmc_edged[y]+b_w, obmc_edged[y][b_w] + obmc_edged[y][b_w*2-1], b_w);
-                    if(mb_y==0){
-                        for(x=0; x<b_w*2; x++)
-                            obmc_edged[0][x] += obmc_edged[b_w-1][x];
-                        for(y=1; y<b_w; y++)
-                            memcpy(obmc_edged[y], obmc_edged[0], b_w*2);
-                    }
-                    if(mb_y==b_height-1){
-                        for(x=0; x<b_w*2; x++)
-                            obmc_edged[b_w*2-1][x] += obmc_edged[b_w][x];
-                        for(y=b_w; y<b_w*2-1; y++)
-                            memcpy(obmc_edged[y], obmc_edged[b_w*2-1], b_w*2);
-                    }
-                }
-
-                //skip stuff outside the picture
-                if(mb_x==0 || mb_y==0 || mb_x==b_width-1 || mb_y==b_height-1){
-                    uint8_t *src= s->  input_picture.data[0];
-                    uint8_t *dst= s->current_picture.data[0];
-                    const int stride= s->current_picture.linesize[0];
-                    const int block_w= MB_SIZE >> s->block_max_depth;
-                    const int sx= block_w*mb_x - block_w/2;
-                    const int sy= block_w*mb_y - block_w/2;
-                    const int w= s->plane[0].width;
-                    const int h= s->plane[0].height;
-                    int y;
-
-                    for(y=sy; y<0; y++)
-                        memcpy(dst + sx + y*stride, src + sx + y*stride, block_w*2);
-                    for(y=h; y<sy+block_w*2; y++)
-                        memcpy(dst + sx + y*stride, src + sx + y*stride, block_w*2);
-                    if(sx<0){
-                        for(y=sy; y<sy+block_w*2; y++)
-                            memcpy(dst + sx + y*stride, src + sx + y*stride, -sx);
-                    }
-                    if(sx+block_w*2 > w){
-                        for(y=sy; y<sy+block_w*2; y++)
-                            memcpy(dst + w + y*stride, src + w + y*stride, sx+block_w*2 - w);
-                    }
-                }
-
-                // intra(black) = neighbors' contribution to the current block
-                for(i=0; i<3; i++)
-                    color[i]= get_dc(s, mb_x, mb_y, i);
-
-                // get previous score (cannot be cached due to OBMC)
-                if(pass > 0 && (block->type&BLOCK_INTRA)){
-                    int color0[3]= {block->color[0], block->color[1], block->color[2]};
-                    check_block(s, mb_x, mb_y, color0, 1, obmc_edged, &best_rd);
-                }else
-                    check_block_inter(s, mb_x, mb_y, block->mx, block->my, obmc_edged, &best_rd);
-
-                ref_b= *block;
-                ref_rd= best_rd;
-                for(ref=0; ref < s->ref_frames; ref++){
-                    int16_t (*mvr)[2]= &s->ref_mvs[ref][index];
-                    if(s->ref_scores[ref][index] > s->ref_scores[ref_b.ref][index]*3/2) //FIXME tune threshold
-                        continue;
-                    block->ref= ref;
-                    best_rd= INT_MAX;
-
-                    check_block_inter(s, mb_x, mb_y, mvr[0][0], mvr[0][1], obmc_edged, &best_rd);
-                    check_block_inter(s, mb_x, mb_y, 0, 0, obmc_edged, &best_rd);
-                    if(tb)
-                        check_block_inter(s, mb_x, mb_y, mvr[-b_stride][0], mvr[-b_stride][1], obmc_edged, &best_rd);
-                    if(lb)
-                        check_block_inter(s, mb_x, mb_y, mvr[-1][0], mvr[-1][1], obmc_edged, &best_rd);
-                    if(rb)
-                        check_block_inter(s, mb_x, mb_y, mvr[1][0], mvr[1][1], obmc_edged, &best_rd);
-                    if(bb)
-                        check_block_inter(s, mb_x, mb_y, mvr[b_stride][0], mvr[b_stride][1], obmc_edged, &best_rd);
-
-                    /* fullpel ME */
-                    //FIXME avoid subpel interpolation / round to nearest integer
-                    do{
-                        dia_change=0;
-                        for(i=0; i<FFMAX(s->avctx->dia_size, 1); i++){
-                            for(j=0; j<i; j++){
-                                dia_change |= check_block_inter(s, mb_x, mb_y, block->mx+4*(i-j), block->my+(4*j), obmc_edged, &best_rd);
-                                dia_change |= check_block_inter(s, mb_x, mb_y, block->mx-4*(i-j), block->my-(4*j), obmc_edged, &best_rd);
-                                dia_change |= check_block_inter(s, mb_x, mb_y, block->mx+4*(i-j), block->my-(4*j), obmc_edged, &best_rd);
-                                dia_change |= check_block_inter(s, mb_x, mb_y, block->mx-4*(i-j), block->my+(4*j), obmc_edged, &best_rd);
-                            }
-                        }
-                    }while(dia_change);
-                    /* subpel ME */
-                    do{
-                        static const int square[8][2]= {{+1, 0},{-1, 0},{ 0,+1},{ 0,-1},{+1,+1},{-1,-1},{+1,-1},{-1,+1},};
-                        dia_change=0;
-                        for(i=0; i<8; i++)
-                            dia_change |= check_block_inter(s, mb_x, mb_y, block->mx+square[i][0], block->my+square[i][1], obmc_edged, &best_rd);
-                    }while(dia_change);
-                    //FIXME or try the standard 2 pass qpel or similar
-
-                    mvr[0][0]= block->mx;
-                    mvr[0][1]= block->my;
-                    if(ref_rd > best_rd){
-                        ref_rd= best_rd;
-                        ref_b= *block;
-                    }
-                }
-                best_rd= ref_rd;
-                *block= ref_b;
-                check_block(s, mb_x, mb_y, color, 1, obmc_edged, &best_rd);
-                //FIXME RD style color selection
-                if(!same_block(block, &backup)){
-                    if(tb ) tb ->type &= ~BLOCK_OPT;
-                    if(lb ) lb ->type &= ~BLOCK_OPT;
-                    if(rb ) rb ->type &= ~BLOCK_OPT;
-                    if(bb ) bb ->type &= ~BLOCK_OPT;
-                    if(tlb) tlb->type &= ~BLOCK_OPT;
-                    if(trb) trb->type &= ~BLOCK_OPT;
-                    if(blb) blb->type &= ~BLOCK_OPT;
-                    if(brb) brb->type &= ~BLOCK_OPT;
-                    change ++;
-                }
-            }
-        }
-        av_log(s->avctx, AV_LOG_ERROR, "pass:%d changed:%d\n", pass, change);
-        if(!change)
-            break;
-    }
-
-    if(s->block_max_depth == 1){
-        int change= 0;
-        for(mb_y= 0; mb_y<b_height; mb_y+=2){
-            for(mb_x= 0; mb_x<b_width; mb_x+=2){
-                int i;
-                int best_rd, init_rd;
-                const int index= mb_x + mb_y * b_stride;
-                BlockNode *b[4];
-
-                b[0]= &s->block[index];
-                b[1]= b[0]+1;
-                b[2]= b[0]+b_stride;
-                b[3]= b[2]+1;
-                if(same_block(b[0], b[1]) &&
-                   same_block(b[0], b[2]) &&
-                   same_block(b[0], b[3]))
-                    continue;
-
-                if(!s->me_cache_generation)
-                    memset(s->me_cache, 0, sizeof(s->me_cache));
-                s->me_cache_generation += 1<<22;
-
-                init_rd= best_rd= get_4block_rd(s, mb_x, mb_y, 0);
-
-                //FIXME more multiref search?
-                check_4block_inter(s, mb_x, mb_y,
-                                   (b[0]->mx + b[1]->mx + b[2]->mx + b[3]->mx + 2) >> 2,
-                                   (b[0]->my + b[1]->my + b[2]->my + b[3]->my + 2) >> 2, 0, &best_rd);
-
-                for(i=0; i<4; i++)
-                    if(!(b[i]->type&BLOCK_INTRA))
-                        check_4block_inter(s, mb_x, mb_y, b[i]->mx, b[i]->my, b[i]->ref, &best_rd);
-
-                if(init_rd != best_rd)
-                    change++;
-            }
-        }
-        av_log(s->avctx, AV_LOG_ERROR, "pass:4mv changed:%d\n", change*4);
-    }
-}
-
-static void encode_blocks(SnowContext *s, int search){
-    int x, y;
-    int w= s->b_width;
-    int h= s->b_height;
-
-    if(s->avctx->me_method == ME_ITER && !s->keyframe && search)
-        iterative_me(s);
-
-    for(y=0; y<h; y++){
-        if(s->c.bytestream_end - s->c.bytestream < w*MB_SIZE*MB_SIZE*3){ //FIXME nicer limit
-            av_log(s->avctx, AV_LOG_ERROR, "encoded frame too large\n");
-            return;
-        }
-        for(x=0; x<w; x++){
-            if(s->avctx->me_method == ME_ITER || !search)
-                encode_q_branch2(s, 0, x, y);
-            else
-                encode_q_branch (s, 0, x, y);
-        }
-    }
-}
-
-static void quantize(SnowContext *s, SubBand *b, IDWTELEM *dst, DWTELEM *src, int stride, int bias){
-    const int w= b->width;
-    const int h= b->height;
-    const int qlog= av_clip(s->qlog + b->qlog, 0, QROOT*16);
-    const int qmul= ff_qexp[qlog&(QROOT-1)]<<((qlog>>QSHIFT) + ENCODER_EXTRA_BITS);
-    int x,y, thres1, thres2;
-
-    if(s->qlog == LOSSLESS_QLOG){
-        for(y=0; y<h; y++)
-            for(x=0; x<w; x++)
-                dst[x + y*stride]= src[x + y*stride];
-        return;
-    }
-
-    bias= bias ? 0 : (3*qmul)>>3;
-    thres1= ((qmul - bias)>>QEXPSHIFT) - 1;
-    thres2= 2*thres1;
-
-    if(!bias){
-        for(y=0; y<h; y++){
-            for(x=0; x<w; x++){
-                int i= src[x + y*stride];
-
-                if((unsigned)(i+thres1) > thres2){
-                    if(i>=0){
-                        i<<= QEXPSHIFT;
-                        i/= qmul; //FIXME optimize
-                        dst[x + y*stride]=  i;
-                    }else{
-                        i= -i;
-                        i<<= QEXPSHIFT;
-                        i/= qmul; //FIXME optimize
-                        dst[x + y*stride]= -i;
-                    }
-                }else
-                    dst[x + y*stride]= 0;
-            }
-        }
-    }else{
-        for(y=0; y<h; y++){
-            for(x=0; x<w; x++){
-                int i= src[x + y*stride];
-
-                if((unsigned)(i+thres1) > thres2){
-                    if(i>=0){
-                        i<<= QEXPSHIFT;
-                        i= (i + bias) / qmul; //FIXME optimize
-                        dst[x + y*stride]=  i;
-                    }else{
-                        i= -i;
-                        i<<= QEXPSHIFT;
-                        i= (i + bias) / qmul; //FIXME optimize
-                        dst[x + y*stride]= -i;
-                    }
-                }else
-                    dst[x + y*stride]= 0;
-            }
-        }
-    }
-}
-
-static void dequantize(SnowContext *s, SubBand *b, IDWTELEM *src, int stride){
-    const int w= b->width;
-    const int h= b->height;
-    const int qlog= av_clip(s->qlog + b->qlog, 0, QROOT*16);
-    const int qmul= ff_qexp[qlog&(QROOT-1)]<<(qlog>>QSHIFT);
-    const int qadd= (s->qbias*qmul)>>QBIAS_SHIFT;
-    int x,y;
-
-    if(s->qlog == LOSSLESS_QLOG) return;
-
-    for(y=0; y<h; y++){
-        for(x=0; x<w; x++){
-            int i= src[x + y*stride];
-            if(i<0){
-                src[x + y*stride]= -((-i*qmul + qadd)>>(QEXPSHIFT)); //FIXME try different bias
-            }else if(i>0){
-                src[x + y*stride]=  (( i*qmul + qadd)>>(QEXPSHIFT));
-            }
-        }
-    }
-}
-
-static void decorrelate(SnowContext *s, SubBand *b, IDWTELEM *src, int stride, int inverse, int use_median){
-    const int w= b->width;
-    const int h= b->height;
-    int x,y;
-
-    for(y=h-1; y>=0; y--){
-        for(x=w-1; x>=0; x--){
-            int i= x + y*stride;
-
-            if(x){
-                if(use_median){
-                    if(y && x+1<w) src[i] -= mid_pred(src[i - 1], src[i - stride], src[i - stride + 1]);
-                    else  src[i] -= src[i - 1];
-                }else{
-                    if(y) src[i] -= mid_pred(src[i - 1], src[i - stride], src[i - 1] + src[i - stride] - src[i - 1 - stride]);
-                    else  src[i] -= src[i - 1];
-                }
-            }else{
-                if(y) src[i] -= src[i - stride];
-            }
-        }
-    }
-}
-
-static void correlate(SnowContext *s, SubBand *b, IDWTELEM *src, int stride, int inverse, int use_median){
-    const int w= b->width;
-    const int h= b->height;
-    int x,y;
-
-    for(y=0; y<h; y++){
-        for(x=0; x<w; x++){
-            int i= x + y*stride;
-
-            if(x){
-                if(use_median){
-                    if(y && x+1<w) src[i] += mid_pred(src[i - 1], src[i - stride], src[i - stride + 1]);
-                    else  src[i] += src[i - 1];
-                }else{
-                    if(y) src[i] += mid_pred(src[i - 1], src[i - stride], src[i - 1] + src[i - stride] - src[i - 1 - stride]);
-                    else  src[i] += src[i - 1];
-                }
-            }else{
-                if(y) src[i] += src[i - stride];
-            }
-        }
-    }
-}
-
-static void encode_qlogs(SnowContext *s){
-    int plane_index, level, orientation;
-
-    for(plane_index=0; plane_index<2; plane_index++){
-        for(level=0; level<s->spatial_decomposition_count; level++){
-            for(orientation=level ? 1:0; orientation<4; orientation++){
-                if(orientation==2) continue;
-                put_symbol(&s->c, s->header_state, s->plane[plane_index].band[level][orientation].qlog, 1);
-            }
-        }
-    }
-}
-
-static void encode_header(SnowContext *s){
-    int plane_index, i;
-    uint8_t kstate[32];
-
-    memset(kstate, MID_STATE, sizeof(kstate));
-
-    put_rac(&s->c, kstate, s->keyframe);
-    if(s->keyframe || s->always_reset){
-        ff_snow_reset_contexts(s);
-        s->last_spatial_decomposition_type=
-        s->last_qlog=
-        s->last_qbias=
-        s->last_mv_scale=
-        s->last_block_max_depth= 0;
-        for(plane_index=0; plane_index<2; plane_index++){
-            Plane *p= &s->plane[plane_index];
-            p->last_htaps=0;
-            p->last_diag_mc=0;
-            memset(p->last_hcoeff, 0, sizeof(p->last_hcoeff));
-        }
-    }
-    if(s->keyframe){
-        put_symbol(&s->c, s->header_state, s->version, 0);
-        put_rac(&s->c, s->header_state, s->always_reset);
-        put_symbol(&s->c, s->header_state, s->temporal_decomposition_type, 0);
-        put_symbol(&s->c, s->header_state, s->temporal_decomposition_count, 0);
-        put_symbol(&s->c, s->header_state, s->spatial_decomposition_count, 0);
-        put_symbol(&s->c, s->header_state, s->colorspace_type, 0);
-        put_symbol(&s->c, s->header_state, s->chroma_h_shift, 0);
-        put_symbol(&s->c, s->header_state, s->chroma_v_shift, 0);
-        put_rac(&s->c, s->header_state, s->spatial_scalability);
-//        put_rac(&s->c, s->header_state, s->rate_scalability);
-        put_symbol(&s->c, s->header_state, s->max_ref_frames-1, 0);
-
-        encode_qlogs(s);
-    }
-
-    if(!s->keyframe){
-        int update_mc=0;
-        for(plane_index=0; plane_index<2; plane_index++){
-            Plane *p= &s->plane[plane_index];
-            update_mc |= p->last_htaps   != p->htaps;
-            update_mc |= p->last_diag_mc != p->diag_mc;
-            update_mc |= !!memcmp(p->last_hcoeff, p->hcoeff, sizeof(p->hcoeff));
-        }
-        put_rac(&s->c, s->header_state, update_mc);
-        if(update_mc){
-            for(plane_index=0; plane_index<2; plane_index++){
-                Plane *p= &s->plane[plane_index];
-                put_rac(&s->c, s->header_state, p->diag_mc);
-                put_symbol(&s->c, s->header_state, p->htaps/2-1, 0);
-                for(i= p->htaps/2; i; i--)
-                    put_symbol(&s->c, s->header_state, FFABS(p->hcoeff[i]), 0);
-            }
-        }
-        if(s->last_spatial_decomposition_count != s->spatial_decomposition_count){
-            put_rac(&s->c, s->header_state, 1);
-            put_symbol(&s->c, s->header_state, s->spatial_decomposition_count, 0);
-            encode_qlogs(s);
-        }else
-            put_rac(&s->c, s->header_state, 0);
-    }
-
-    put_symbol(&s->c, s->header_state, s->spatial_decomposition_type - s->last_spatial_decomposition_type, 1);
-    put_symbol(&s->c, s->header_state, s->qlog            - s->last_qlog    , 1);
-    put_symbol(&s->c, s->header_state, s->mv_scale        - s->last_mv_scale, 1);
-    put_symbol(&s->c, s->header_state, s->qbias           - s->last_qbias   , 1);
-    put_symbol(&s->c, s->header_state, s->block_max_depth - s->last_block_max_depth, 1);
-
-}
-
-static void update_last_header_values(SnowContext *s){
-    int plane_index;
-
-    if(!s->keyframe){
-        for(plane_index=0; plane_index<2; plane_index++){
-            Plane *p= &s->plane[plane_index];
-            p->last_diag_mc= p->diag_mc;
-            p->last_htaps  = p->htaps;
-            memcpy(p->last_hcoeff, p->hcoeff, sizeof(p->hcoeff));
-        }
-    }
-
-    s->last_spatial_decomposition_type  = s->spatial_decomposition_type;
-    s->last_qlog                        = s->qlog;
-    s->last_qbias                       = s->qbias;
-    s->last_mv_scale                    = s->mv_scale;
-    s->last_block_max_depth             = s->block_max_depth;
-    s->last_spatial_decomposition_count = s->spatial_decomposition_count;
-}
-
-static int qscale2qlog(int qscale){
-    return rint(QROOT*log2(qscale / (float)FF_QP2LAMBDA))
-           + 61*QROOT/8; ///< 64 > 60
-}
-
-static int ratecontrol_1pass(SnowContext *s, AVFrame *pict)
-{
-    /* Estimate the frame's complexity as a sum of weighted dwt coefficients.
-     * FIXME we know exact mv bits at this point,
-     * but ratecontrol isn't set up to include them. */
-    uint32_t coef_sum= 0;
-    int level, orientation, delta_qlog;
-
-    for(level=0; level<s->spatial_decomposition_count; level++){
-        for(orientation=level ? 1 : 0; orientation<4; orientation++){
-            SubBand *b= &s->plane[0].band[level][orientation];
-            IDWTELEM *buf= b->ibuf;
-            const int w= b->width;
-            const int h= b->height;
-            const int stride= b->stride;
-            const int qlog= av_clip(2*QROOT + b->qlog, 0, QROOT*16);
-            const int qmul= ff_qexp[qlog&(QROOT-1)]<<(qlog>>QSHIFT);
-            const int qdiv= (1<<16)/qmul;
-            int x, y;
-            //FIXME this is ugly
-            for(y=0; y<h; y++)
-                for(x=0; x<w; x++)
-                    buf[x+y*stride]= b->buf[x+y*stride];
-            if(orientation==0)
-                decorrelate(s, b, buf, stride, 1, 0);
-            for(y=0; y<h; y++)
-                for(x=0; x<w; x++)
-                    coef_sum+= abs(buf[x+y*stride]) * qdiv >> 16;
-        }
-    }
-
-    /* ugly, ratecontrol just takes a sqrt again */
-    coef_sum = (uint64_t)coef_sum * coef_sum >> 16;
-    assert(coef_sum < INT_MAX);
-
-    if(pict->pict_type == AV_PICTURE_TYPE_I){
-        s->m.current_picture.mb_var_sum= coef_sum;
-        s->m.current_picture.mc_mb_var_sum= 0;
-    }else{
-        s->m.current_picture.mc_mb_var_sum= coef_sum;
-        s->m.current_picture.mb_var_sum= 0;
-    }
-
-    pict->quality= ff_rate_estimate_qscale(&s->m, 1);
-    if (pict->quality < 0)
-        return INT_MIN;
-    s->lambda= pict->quality * 3/2;
-    delta_qlog= qscale2qlog(pict->quality) - s->qlog;
-    s->qlog+= delta_qlog;
-    return delta_qlog;
-}
-
-static void calculate_visual_weight(SnowContext *s, Plane *p){
-    int width = p->width;
-    int height= p->height;
-    int level, orientation, x, y;
-
-    for(level=0; level<s->spatial_decomposition_count; level++){
-        for(orientation=level ? 1 : 0; orientation<4; orientation++){
-            SubBand *b= &p->band[level][orientation];
-            IDWTELEM *ibuf= b->ibuf;
-            int64_t error=0;
-
-            memset(s->spatial_idwt_buffer, 0, sizeof(*s->spatial_idwt_buffer)*width*height);
-            ibuf[b->width/2 + b->height/2*b->stride]= 256*16;
-            ff_spatial_idwt(s->spatial_idwt_buffer, s->temp_idwt_buffer, width, height, width, s->spatial_decomposition_type, s->spatial_decomposition_count);
-            for(y=0; y<height; y++){
-                for(x=0; x<width; x++){
-                    int64_t d= s->spatial_idwt_buffer[x + y*width]*16;
-                    error += d*d;
-                }
-            }
-
-            b->qlog= (int)(log(352256.0/sqrt(error)) / log(pow(2.0, 1.0/QROOT))+0.5);
-        }
-    }
-}
-
-static int encode_frame(AVCodecContext *avctx, AVPacket *pkt,
-                        const AVFrame *pict, int *got_packet)
-{
-    SnowContext *s = avctx->priv_data;
-    RangeCoder * const c= &s->c;
-    AVFrame *pic = &s->new_picture;
-    const int width= s->avctx->width;
-    const int height= s->avctx->height;
-    int level, orientation, plane_index, i, y, ret;
-    uint8_t rc_header_bak[sizeof(s->header_state)];
-    uint8_t rc_block_bak[sizeof(s->block_state)];
-
-    if (!pkt->data &&
-        (ret = av_new_packet(pkt, s->b_width*s->b_height*MB_SIZE*MB_SIZE*3 + FF_MIN_BUFFER_SIZE)) < 0) {
-        av_log(avctx, AV_LOG_ERROR, "Error getting output packet.\n");
-        return ret;
-    }
-
-    ff_init_range_encoder(c, pkt->data, pkt->size);
-    ff_build_rac_states(c, 0.05*(1LL<<32), 256-8);
-
-    for(i=0; i<3; i++){
-        int shift= !!i;
-        for(y=0; y<(height>>shift); y++)
-            memcpy(&s->input_picture.data[i][y * s->input_picture.linesize[i]],
-                   &pict->data[i][y * pict->linesize[i]],
-                   width>>shift);
-    }
-    s->new_picture = *pict;
-
-    s->m.picture_number= avctx->frame_number;
-    if(avctx->flags&CODEC_FLAG_PASS2){
-        s->m.pict_type = pic->pict_type = s->m.rc_context.entry[avctx->frame_number].new_pict_type;
-        s->keyframe = pic->pict_type == AV_PICTURE_TYPE_I;
-        if(!(avctx->flags&CODEC_FLAG_QSCALE)) {
-            pic->quality = ff_rate_estimate_qscale(&s->m, 0);
-            if (pic->quality < 0)
-                return -1;
-        }
-    }else{
-        s->keyframe= avctx->gop_size==0 || avctx->frame_number % avctx->gop_size == 0;
-        s->m.pict_type = pic->pict_type = s->keyframe ? AV_PICTURE_TYPE_I : AV_PICTURE_TYPE_P;
-    }
-
-    if(s->pass1_rc && avctx->frame_number == 0)
-        pic->quality = 2*FF_QP2LAMBDA;
-    if (pic->quality) {
-        s->qlog   = qscale2qlog(pic->quality);
-        s->lambda = pic->quality * 3/2;
-    }
-    if (s->qlog < 0 || (!pic->quality && (avctx->flags & CODEC_FLAG_QSCALE))) {
-        s->qlog= LOSSLESS_QLOG;
-        s->lambda = 0;
-    }//else keep previous frame's qlog until after motion estimation
-
-    ff_snow_frame_start(s);
-
-    s->m.current_picture_ptr= &s->m.current_picture;
-    s->m.last_picture.f.pts = s->m.current_picture.f.pts;
-    s->m.current_picture.f.pts = pict->pts;
-    if(pic->pict_type == AV_PICTURE_TYPE_P){
-        int block_width = (width +15)>>4;
-        int block_height= (height+15)>>4;
-        int stride= s->current_picture.linesize[0];
-
-        assert(s->current_picture.data[0]);
-        assert(s->last_picture[0].data[0]);
-
-        s->m.avctx= s->avctx;
-        s->m.current_picture.f.data[0] = s->current_picture.data[0];
-        s->m.   last_picture.f.data[0] = s->last_picture[0].data[0];
-        s->m.    new_picture.f.data[0] = s->  input_picture.data[0];
-        s->m.   last_picture_ptr= &s->m.   last_picture;
-        s->m.linesize=
-        s->m.   last_picture.f.linesize[0] =
-        s->m.    new_picture.f.linesize[0] =
-        s->m.current_picture.f.linesize[0] = stride;
-        s->m.uvlinesize= s->current_picture.linesize[1];
-        s->m.width = width;
-        s->m.height= height;
-        s->m.mb_width = block_width;
-        s->m.mb_height= block_height;
-        s->m.mb_stride=   s->m.mb_width+1;
-        s->m.b8_stride= 2*s->m.mb_width+1;
-        s->m.f_code=1;
-        s->m.pict_type = pic->pict_type;
-        s->m.me_method= s->avctx->me_method;
-        s->m.me.scene_change_score=0;
-        s->m.flags= s->avctx->flags;
-        s->m.quarter_sample= (s->avctx->flags & CODEC_FLAG_QPEL)!=0;
-        s->m.out_format= FMT_H263;
-        s->m.unrestricted_mv= 1;
-
-        s->m.lambda = s->lambda;
-        s->m.qscale= (s->m.lambda*139 + FF_LAMBDA_SCALE*64) >> (FF_LAMBDA_SHIFT + 7);
-        s->lambda2= s->m.lambda2= (s->m.lambda*s->m.lambda + FF_LAMBDA_SCALE/2) >> FF_LAMBDA_SHIFT;
-
-        s->m.dsp= s->dsp; //move
-        ff_init_me(&s->m);
-        s->dsp= s->m.dsp;
-    }
-
-    if(s->pass1_rc){
-        memcpy(rc_header_bak, s->header_state, sizeof(s->header_state));
-        memcpy(rc_block_bak, s->block_state, sizeof(s->block_state));
-    }
-
-redo_frame:
-
-    if (pic->pict_type == AV_PICTURE_TYPE_I)
-        s->spatial_decomposition_count= 5;
-    else
-        s->spatial_decomposition_count= 5;
-
-    s->m.pict_type = pic->pict_type;
-    s->qbias = pic->pict_type == AV_PICTURE_TYPE_P ? 2 : 0;
-
-    ff_snow_common_init_after_header(avctx);
-
-    if(s->last_spatial_decomposition_count != s->spatial_decomposition_count){
-        for(plane_index=0; plane_index<3; plane_index++){
-            calculate_visual_weight(s, &s->plane[plane_index]);
-        }
-    }
-
-    encode_header(s);
-    s->m.misc_bits = 8*(s->c.bytestream - s->c.bytestream_start);
-    encode_blocks(s, 1);
-    s->m.mv_bits = 8*(s->c.bytestream - s->c.bytestream_start) - s->m.misc_bits;
-
-    for(plane_index=0; plane_index<3; plane_index++){
-        Plane *p= &s->plane[plane_index];
-        int w= p->width;
-        int h= p->height;
-        int x, y;
-//        int bits= put_bits_count(&s->c.pb);
-
-        if (!s->memc_only) {
-            //FIXME optimize
-            if(pict->data[plane_index]) //FIXME gray hack
-                for(y=0; y<h; y++){
-                    for(x=0; x<w; x++){
-                        s->spatial_idwt_buffer[y*w + x]= pict->data[plane_index][y*pict->linesize[plane_index] + x]<<FRAC_BITS;
-                    }
-                }
-            predict_plane(s, s->spatial_idwt_buffer, plane_index, 0);
-
-            if(   plane_index==0
-               && pic->pict_type == AV_PICTURE_TYPE_P
-               && !(avctx->flags&CODEC_FLAG_PASS2)
-               && s->m.me.scene_change_score > s->avctx->scenechange_threshold){
-                ff_init_range_encoder(c, pkt->data, pkt->size);
-                ff_build_rac_states(c, 0.05*(1LL<<32), 256-8);
-                pic->pict_type= AV_PICTURE_TYPE_I;
-                s->keyframe=1;
-                s->current_picture.key_frame=1;
-                goto redo_frame;
-            }
-
-            if(s->qlog == LOSSLESS_QLOG){
-                for(y=0; y<h; y++){
-                    for(x=0; x<w; x++){
-                        s->spatial_dwt_buffer[y*w + x]= (s->spatial_idwt_buffer[y*w + x] + (1<<(FRAC_BITS-1))-1)>>FRAC_BITS;
-                    }
-                }
-            }else{
-                for(y=0; y<h; y++){
-                    for(x=0; x<w; x++){
-                        s->spatial_dwt_buffer[y*w + x]=s->spatial_idwt_buffer[y*w + x]<<ENCODER_EXTRA_BITS;
-                    }
-                }
-            }
-
-            /*  if(QUANTIZE2)
-                dwt_quantize(s, p, s->spatial_dwt_buffer, w, h, w, s->spatial_decomposition_type);
-            else*/
-                ff_spatial_dwt(s->spatial_dwt_buffer, s->temp_dwt_buffer, w, h, w, s->spatial_decomposition_type, s->spatial_decomposition_count);
-
-            if(s->pass1_rc && plane_index==0){
-                int delta_qlog = ratecontrol_1pass(s, pic);
-                if (delta_qlog <= INT_MIN)
-                    return -1;
-                if(delta_qlog){
-                    //reordering qlog in the bitstream would eliminate this reset
-                    ff_init_range_encoder(c, pkt->data, pkt->size);
-                    memcpy(s->header_state, rc_header_bak, sizeof(s->header_state));
-                    memcpy(s->block_state, rc_block_bak, sizeof(s->block_state));
-                    encode_header(s);
-                    encode_blocks(s, 0);
-                }
-            }
-
-            for(level=0; level<s->spatial_decomposition_count; level++){
-                for(orientation=level ? 1 : 0; orientation<4; orientation++){
-                    SubBand *b= &p->band[level][orientation];
-
-                    if(!QUANTIZE2)
-                        quantize(s, b, b->ibuf, b->buf, b->stride, s->qbias);
-                    if(orientation==0)
-                        decorrelate(s, b, b->ibuf, b->stride, pic->pict_type == AV_PICTURE_TYPE_P, 0);
-                    encode_subband(s, b, b->ibuf, b->parent ? b->parent->ibuf : NULL, b->stride, orientation);
-                    assert(b->parent==NULL || b->parent->stride == b->stride*2);
-                    if(orientation==0)
-                        correlate(s, b, b->ibuf, b->stride, 1, 0);
-                }
-            }
-
-            for(level=0; level<s->spatial_decomposition_count; level++){
-                for(orientation=level ? 1 : 0; orientation<4; orientation++){
-                    SubBand *b= &p->band[level][orientation];
-
-                    dequantize(s, b, b->ibuf, b->stride);
-                }
-            }
-
-            ff_spatial_idwt(s->spatial_idwt_buffer, s->temp_idwt_buffer, w, h, w, s->spatial_decomposition_type, s->spatial_decomposition_count);
-            if(s->qlog == LOSSLESS_QLOG){
-                for(y=0; y<h; y++){
-                    for(x=0; x<w; x++){
-                        s->spatial_idwt_buffer[y*w + x]<<=FRAC_BITS;
-                    }
-                }
-            }
-            predict_plane(s, s->spatial_idwt_buffer, plane_index, 1);
-        }else{
-            //ME/MC only
-            if(pic->pict_type == AV_PICTURE_TYPE_I){
-                for(y=0; y<h; y++){
-                    for(x=0; x<w; x++){
-                        s->current_picture.data[plane_index][y*s->current_picture.linesize[plane_index] + x]=
-                            pict->data[plane_index][y*pict->linesize[plane_index] + x];
-                    }
-                }
-            }else{
-                memset(s->spatial_idwt_buffer, 0, sizeof(IDWTELEM)*w*h);
-                predict_plane(s, s->spatial_idwt_buffer, plane_index, 1);
-            }
-        }
-        if(s->avctx->flags&CODEC_FLAG_PSNR){
-            int64_t error= 0;
-
-            if(pict->data[plane_index]) //FIXME gray hack
-                for(y=0; y<h; y++){
-                    for(x=0; x<w; x++){
-                        int d= s->current_picture.data[plane_index][y*s->current_picture.linesize[plane_index] + x] - pict->data[plane_index][y*pict->linesize[plane_index] + x];
-                        error += d*d;
-                    }
-                }
-            s->avctx->error[plane_index] += error;
-            s->current_picture.error[plane_index] = error;
-        }
-
-    }
-
-    update_last_header_values(s);
-
-    ff_snow_release_buffer(avctx);
-
-    s->current_picture.coded_picture_number = avctx->frame_number;
-    s->current_picture.pict_type = pict->pict_type;
-    s->current_picture.quality = pict->quality;
-    s->m.frame_bits = 8*(s->c.bytestream - s->c.bytestream_start);
-    s->m.p_tex_bits = s->m.frame_bits - s->m.misc_bits - s->m.mv_bits;
-    s->m.current_picture.f.display_picture_number =
-    s->m.current_picture.f.coded_picture_number   = avctx->frame_number;
-    s->m.current_picture.f.quality                = pic->quality;
-    s->m.total_bits += 8*(s->c.bytestream - s->c.bytestream_start);
-    if(s->pass1_rc)
-        if (ff_rate_estimate_qscale(&s->m, 0) < 0)
-            return -1;
-    if(avctx->flags&CODEC_FLAG_PASS1)
-        ff_write_pass1_stats(&s->m);
-    s->m.last_pict_type = s->m.pict_type;
-    avctx->frame_bits = s->m.frame_bits;
-    avctx->mv_bits = s->m.mv_bits;
-    avctx->misc_bits = s->m.misc_bits;
-    avctx->p_tex_bits = s->m.p_tex_bits;
-
-    emms_c();
-
-    pkt->size = ff_rac_terminate(c);
-    if (avctx->coded_frame->key_frame)
-        pkt->flags |= AV_PKT_FLAG_KEY;
-    *got_packet = 1;
-
-    return 0;
-}
-
-static av_cold int encode_end(AVCodecContext *avctx)
-{
-    SnowContext *s = avctx->priv_data;
-
-    ff_snow_common_end(s);
-    if (s->input_picture.data[0])
-        avctx->release_buffer(avctx, &s->input_picture);
-    av_free(avctx->stats_out);
-
-    return 0;
-}
-
-#define OFFSET(x) offsetof(SnowContext, x)
-#define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
-static const AVOption options[] = {
-    { "memc_only",      "Only do ME/MC (I frames -> ref, P frame -> ME+MC).",   OFFSET(memc_only), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE },
-    { NULL },
-};
-
-static const AVClass snowenc_class = {
-    .class_name = "snow encoder",
-    .item_name  = av_default_item_name,
-    .option     = options,
-    .version    = LIBAVUTIL_VERSION_INT,
-};
-
-AVCodec ff_snow_encoder = {
-    .name           = "snow",
-    .type           = AVMEDIA_TYPE_VIDEO,
-    .id             = AV_CODEC_ID_SNOW,
-    .priv_data_size = sizeof(SnowContext),
-    .init           = encode_init,
-    .encode2        = encode_frame,
-    .close          = encode_end,
-    .long_name      = NULL_IF_CONFIG_SMALL("Snow"),
-    .priv_class     = &snowenc_class,
-};
diff --git a/libavcodec/version.h b/libavcodec/version.h
index 348ce99f2a..47a9822361 100644
--- a/libavcodec/version.h
+++ b/libavcodec/version.h
@@ -91,5 +91,8 @@
 #ifndef FF_API_MMI
 #define FF_API_MMI               (LIBAVCODEC_VERSION_MAJOR < 55)
 #endif
+#ifndef FF_API_SNOW
+#define FF_API_SNOW              (LIBAVCODEC_VERSION_MAJOR < 55)
+#endif
 
 #endif /* AVCODEC_VERSION_H */
diff --git a/libavcodec/x86/Makefile b/libavcodec/x86/Makefile
index 4fc7ac0514..b5a7694bcf 100644
--- a/libavcodec/x86/Makefile
+++ b/libavcodec/x86/Makefile
@@ -32,7 +32,6 @@ MMX-OBJS                               += x86/dsputil_mmx.o             \
                                           x86/idct_sse2_xvid.o          \
                                           x86/simple_idct.o             \
 
-MMX-OBJS-$(CONFIG_DWT)                 += x86/snowdsp.o
 MMX-OBJS-$(CONFIG_ENCODERS)            += x86/dsputilenc_mmx.o          \
                                           x86/motion_est.o
 MMX-OBJS-$(CONFIG_VC1_DECODER)         += x86/vc1dsp_mmx.o
diff --git a/libavcodec/x86/motion_est.c b/libavcodec/x86/motion_est.c
index 0a0cab9cd2..4c53053d85 100644
--- a/libavcodec/x86/motion_est.c
+++ b/libavcodec/x86/motion_est.c
@@ -466,7 +466,7 @@ void ff_dsputil_init_pix_mmx(DSPContext* c, AVCodecContext *avctx)
             c->pix_abs[1][3] = sad8_xy2_mmxext;
         }
     }
-    if ((mm_flags & AV_CPU_FLAG_SSE2) && !(mm_flags & AV_CPU_FLAG_3DNOW) && avctx->codec_id != AV_CODEC_ID_SNOW) {
+    if ((mm_flags & AV_CPU_FLAG_SSE2) && !(mm_flags & AV_CPU_FLAG_3DNOW)) {
         c->sad[0]= sad16_sse2;
     }
 #endif /* HAVE_INLINE_ASM */
diff --git a/libavcodec/x86/snowdsp.c b/libavcodec/x86/snowdsp.c
deleted file mode 100644
index fb190d8d8d..0000000000
--- a/libavcodec/x86/snowdsp.c
+++ /dev/null
@@ -1,902 +0,0 @@
-/*
- * MMX and SSE2 optimized snow DSP utils
- * Copyright (c) 2005-2006 Robert Edele <yartrebo@earthlink.net>
- *
- * This file is part of Libav.
- *
- * Libav is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * Libav is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with Libav; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-#include "libavutil/cpu.h"
-#include "libavutil/x86/asm.h"
-#include "libavcodec/avcodec.h"
-#include "libavcodec/snow.h"
-#include "libavcodec/dwt.h"
-#include "dsputil_mmx.h"
-
-#if HAVE_INLINE_ASM
-
-static void ff_snow_horizontal_compose97i_sse2(IDWTELEM *b, IDWTELEM *temp, int width){
-    const int w2= (width+1)>>1;
-    const int w_l= (width>>1);
-    const int w_r= w2 - 1;
-    int i;
-
-    { // Lift 0
-        IDWTELEM * const ref = b + w2 - 1;
-        IDWTELEM b_0 = b[0]; //By allowing the first entry in b[0] to be calculated twice
-        // (the first time erroneously), we allow the SSE2 code to run an extra pass.
-        // The savings in code and time are well worth having to store this value and
-        // calculate b[0] correctly afterwards.
-
-        i = 0;
-        __asm__ volatile(
-            "pcmpeqd   %%xmm7, %%xmm7         \n\t"
-            "pcmpeqd   %%xmm3, %%xmm3         \n\t"
-            "psllw         $1, %%xmm3         \n\t"
-            "paddw     %%xmm7, %%xmm3         \n\t"
-            "psllw        $13, %%xmm3         \n\t"
-        ::);
-        for(; i<w_l-15; i+=16){
-            __asm__ volatile(
-                "movdqu   (%1), %%xmm1        \n\t"
-                "movdqu 16(%1), %%xmm5        \n\t"
-                "movdqu  2(%1), %%xmm2        \n\t"
-                "movdqu 18(%1), %%xmm6        \n\t"
-                "paddw  %%xmm1, %%xmm2        \n\t"
-                "paddw  %%xmm5, %%xmm6        \n\t"
-                "paddw  %%xmm7, %%xmm2        \n\t"
-                "paddw  %%xmm7, %%xmm6        \n\t"
-                "pmulhw %%xmm3, %%xmm2        \n\t"
-                "pmulhw %%xmm3, %%xmm6        \n\t"
-                "paddw    (%0), %%xmm2        \n\t"
-                "paddw  16(%0), %%xmm6        \n\t"
-                "movdqa %%xmm2, (%0)          \n\t"
-                "movdqa %%xmm6, 16(%0)        \n\t"
-                :: "r"(&b[i]), "r"(&ref[i])
-                : "memory"
-            );
-        }
-        snow_horizontal_compose_lift_lead_out(i, b, b, ref, width, w_l, 0, W_DM, W_DO, W_DS);
-        b[0] = b_0 - ((W_DM * 2 * ref[1]+W_DO)>>W_DS);
-    }
-
-    { // Lift 1
-        IDWTELEM * const dst = b+w2;
-
-        i = 0;
-        for(; (((x86_reg)&dst[i]) & 0x1F) && i<w_r; i++){
-            dst[i] = dst[i] - (b[i] + b[i + 1]);
-        }
-        for(; i<w_r-15; i+=16){
-            __asm__ volatile(
-                "movdqu   (%1), %%xmm1        \n\t"
-                "movdqu 16(%1), %%xmm5        \n\t"
-                "movdqu  2(%1), %%xmm2        \n\t"
-                "movdqu 18(%1), %%xmm6        \n\t"
-                "paddw  %%xmm1, %%xmm2        \n\t"
-                "paddw  %%xmm5, %%xmm6        \n\t"
-                "movdqa   (%0), %%xmm0        \n\t"
-                "movdqa 16(%0), %%xmm4        \n\t"
-                "psubw  %%xmm2, %%xmm0        \n\t"
-                "psubw  %%xmm6, %%xmm4        \n\t"
-                "movdqa %%xmm0, (%0)          \n\t"
-                "movdqa %%xmm4, 16(%0)        \n\t"
-                :: "r"(&dst[i]), "r"(&b[i])
-                : "memory"
-            );
-        }
-        snow_horizontal_compose_lift_lead_out(i, dst, dst, b, width, w_r, 1, W_CM, W_CO, W_CS);
-    }
-
-    { // Lift 2
-        IDWTELEM * const ref = b+w2 - 1;
-        IDWTELEM b_0 = b[0];
-
-        i = 0;
-        __asm__ volatile(
-            "psllw         $15, %%xmm7        \n\t"
-            "pcmpeqw    %%xmm6, %%xmm6        \n\t"
-            "psrlw         $13, %%xmm6        \n\t"
-            "paddw      %%xmm7, %%xmm6        \n\t"
-        ::);
-        for(; i<w_l-15; i+=16){
-            __asm__ volatile(
-                "movdqu   (%1), %%xmm0        \n\t"
-                "movdqu 16(%1), %%xmm4        \n\t"
-                "movdqu  2(%1), %%xmm1        \n\t"
-                "movdqu 18(%1), %%xmm5        \n\t" //FIXME try aligned reads and shifts
-                "paddw  %%xmm6, %%xmm0        \n\t"
-                "paddw  %%xmm6, %%xmm4        \n\t"
-                "paddw  %%xmm7, %%xmm1        \n\t"
-                "paddw  %%xmm7, %%xmm5        \n\t"
-                "pavgw  %%xmm1, %%xmm0        \n\t"
-                "pavgw  %%xmm5, %%xmm4        \n\t"
-                "psubw  %%xmm7, %%xmm0        \n\t"
-                "psubw  %%xmm7, %%xmm4        \n\t"
-                "psraw      $1, %%xmm0        \n\t"
-                "psraw      $1, %%xmm4        \n\t"
-                "movdqa   (%0), %%xmm1        \n\t"
-                "movdqa 16(%0), %%xmm5        \n\t"
-                "paddw  %%xmm1, %%xmm0        \n\t"
-                "paddw  %%xmm5, %%xmm4        \n\t"
-                "psraw      $2, %%xmm0        \n\t"
-                "psraw      $2, %%xmm4        \n\t"
-                "paddw  %%xmm1, %%xmm0        \n\t"
-                "paddw  %%xmm5, %%xmm4        \n\t"
-                "movdqa %%xmm0, (%0)          \n\t"
-                "movdqa %%xmm4, 16(%0)        \n\t"
-                :: "r"(&b[i]), "r"(&ref[i])
-                : "memory"
-            );
-        }
-        snow_horizontal_compose_liftS_lead_out(i, b, b, ref, width, w_l);
-        b[0] = b_0 + ((2 * ref[1] + W_BO-1 + 4 * b_0) >> W_BS);
-    }
-
-    { // Lift 3
-        IDWTELEM * const src = b+w2;
-
-        i = 0;
-        for(; (((x86_reg)&temp[i]) & 0x1F) && i<w_r; i++){
-            temp[i] = src[i] - ((-W_AM*(b[i] + b[i+1]))>>W_AS);
-        }
-        for(; i<w_r-7; i+=8){
-            __asm__ volatile(
-                "movdqu  2(%1), %%xmm2        \n\t"
-                "movdqu 18(%1), %%xmm6        \n\t"
-                "paddw    (%1), %%xmm2        \n\t"
-                "paddw  16(%1), %%xmm6        \n\t"
-                "movdqu   (%0), %%xmm0        \n\t"
-                "movdqu 16(%0), %%xmm4        \n\t"
-                "paddw  %%xmm2, %%xmm0        \n\t"
-                "paddw  %%xmm6, %%xmm4        \n\t"
-                "psraw      $1, %%xmm2        \n\t"
-                "psraw      $1, %%xmm6        \n\t"
-                "paddw  %%xmm0, %%xmm2        \n\t"
-                "paddw  %%xmm4, %%xmm6        \n\t"
-                "movdqa %%xmm2, (%2)          \n\t"
-                "movdqa %%xmm6, 16(%2)        \n\t"
-                :: "r"(&src[i]), "r"(&b[i]), "r"(&temp[i])
-                 : "memory"
-               );
-        }
-        snow_horizontal_compose_lift_lead_out(i, temp, src, b, width, w_r, 1, -W_AM, W_AO+1, W_AS);
-    }
-
-    {
-        snow_interleave_line_header(&i, width, b, temp);
-
-        for (; (i & 0x3E) != 0x3E; i-=2){
-            b[i+1] = temp[i>>1];
-            b[i] = b[i>>1];
-        }
-        for (i-=62; i>=0; i-=64){
-            __asm__ volatile(
-                "movdqa      (%1), %%xmm0       \n\t"
-                "movdqa    16(%1), %%xmm2       \n\t"
-                "movdqa    32(%1), %%xmm4       \n\t"
-                "movdqa    48(%1), %%xmm6       \n\t"
-                "movdqa      (%1), %%xmm1       \n\t"
-                "movdqa    16(%1), %%xmm3       \n\t"
-                "movdqa    32(%1), %%xmm5       \n\t"
-                "movdqa    48(%1), %%xmm7       \n\t"
-                "punpcklwd   (%2), %%xmm0       \n\t"
-                "punpcklwd 16(%2), %%xmm2       \n\t"
-                "punpcklwd 32(%2), %%xmm4       \n\t"
-                "punpcklwd 48(%2), %%xmm6       \n\t"
-                "movdqa    %%xmm0, (%0)         \n\t"
-                "movdqa    %%xmm2, 32(%0)       \n\t"
-                "movdqa    %%xmm4, 64(%0)       \n\t"
-                "movdqa    %%xmm6, 96(%0)       \n\t"
-                "punpckhwd   (%2), %%xmm1       \n\t"
-                "punpckhwd 16(%2), %%xmm3       \n\t"
-                "punpckhwd 32(%2), %%xmm5       \n\t"
-                "punpckhwd 48(%2), %%xmm7       \n\t"
-                "movdqa    %%xmm1, 16(%0)       \n\t"
-                "movdqa    %%xmm3, 48(%0)       \n\t"
-                "movdqa    %%xmm5, 80(%0)       \n\t"
-                "movdqa    %%xmm7, 112(%0)      \n\t"
-                :: "r"(&(b)[i]), "r"(&(b)[i>>1]), "r"(&(temp)[i>>1])
-                 : "memory"
-               );
-        }
-    }
-}
-
-static void ff_snow_horizontal_compose97i_mmx(IDWTELEM *b, IDWTELEM *temp, int width){
-    const int w2= (width+1)>>1;
-    const int w_l= (width>>1);
-    const int w_r= w2 - 1;
-    int i;
-
-    { // Lift 0
-        IDWTELEM * const ref = b + w2 - 1;
-
-        i = 1;
-        b[0] = b[0] - ((W_DM * 2 * ref[1]+W_DO)>>W_DS);
-        __asm__ volatile(
-            "pcmpeqw    %%mm7, %%mm7         \n\t"
-            "pcmpeqw    %%mm3, %%mm3         \n\t"
-            "psllw         $1, %%mm3         \n\t"
-            "paddw      %%mm7, %%mm3         \n\t"
-            "psllw        $13, %%mm3         \n\t"
-           ::);
-        for(; i<w_l-7; i+=8){
-            __asm__ volatile(
-                "movq     (%1), %%mm2        \n\t"
-                "movq    8(%1), %%mm6        \n\t"
-                "paddw   2(%1), %%mm2        \n\t"
-                "paddw  10(%1), %%mm6        \n\t"
-                "paddw   %%mm7, %%mm2        \n\t"
-                "paddw   %%mm7, %%mm6        \n\t"
-                "pmulhw  %%mm3, %%mm2        \n\t"
-                "pmulhw  %%mm3, %%mm6        \n\t"
-                "paddw    (%0), %%mm2        \n\t"
-                "paddw   8(%0), %%mm6        \n\t"
-                "movq    %%mm2, (%0)         \n\t"
-                "movq    %%mm6, 8(%0)        \n\t"
-                :: "r"(&b[i]), "r"(&ref[i])
-                 : "memory"
-               );
-        }
-        snow_horizontal_compose_lift_lead_out(i, b, b, ref, width, w_l, 0, W_DM, W_DO, W_DS);
-    }
-
-    { // Lift 1
-        IDWTELEM * const dst = b+w2;
-
-        i = 0;
-        for(; i<w_r-7; i+=8){
-            __asm__ volatile(
-                "movq     (%1), %%mm2        \n\t"
-                "movq    8(%1), %%mm6        \n\t"
-                "paddw   2(%1), %%mm2        \n\t"
-                "paddw  10(%1), %%mm6        \n\t"
-                "movq     (%0), %%mm0        \n\t"
-                "movq    8(%0), %%mm4        \n\t"
-                "psubw   %%mm2, %%mm0        \n\t"
-                "psubw   %%mm6, %%mm4        \n\t"
-                "movq    %%mm0, (%0)         \n\t"
-                "movq    %%mm4, 8(%0)        \n\t"
-                :: "r"(&dst[i]), "r"(&b[i])
-                 : "memory"
-               );
-        }
-        snow_horizontal_compose_lift_lead_out(i, dst, dst, b, width, w_r, 1, W_CM, W_CO, W_CS);
-    }
-
-    { // Lift 2
-        IDWTELEM * const ref = b+w2 - 1;
-
-        i = 1;
-        b[0] = b[0] + (((2 * ref[1] + W_BO) + 4 * b[0]) >> W_BS);
-        __asm__ volatile(
-            "psllw         $15, %%mm7        \n\t"
-            "pcmpeqw     %%mm6, %%mm6        \n\t"
-            "psrlw         $13, %%mm6        \n\t"
-            "paddw       %%mm7, %%mm6        \n\t"
-           ::);
-        for(; i<w_l-7; i+=8){
-            __asm__ volatile(
-                "movq     (%1), %%mm0        \n\t"
-                "movq    8(%1), %%mm4        \n\t"
-                "movq    2(%1), %%mm1        \n\t"
-                "movq   10(%1), %%mm5        \n\t"
-                "paddw   %%mm6, %%mm0        \n\t"
-                "paddw   %%mm6, %%mm4        \n\t"
-                "paddw   %%mm7, %%mm1        \n\t"
-                "paddw   %%mm7, %%mm5        \n\t"
-                "pavgw   %%mm1, %%mm0        \n\t"
-                "pavgw   %%mm5, %%mm4        \n\t"
-                "psubw   %%mm7, %%mm0        \n\t"
-                "psubw   %%mm7, %%mm4        \n\t"
-                "psraw      $1, %%mm0        \n\t"
-                "psraw      $1, %%mm4        \n\t"
-                "movq     (%0), %%mm1        \n\t"
-                "movq    8(%0), %%mm5        \n\t"
-                "paddw   %%mm1, %%mm0        \n\t"
-                "paddw   %%mm5, %%mm4        \n\t"
-                "psraw      $2, %%mm0        \n\t"
-                "psraw      $2, %%mm4        \n\t"
-                "paddw   %%mm1, %%mm0        \n\t"
-                "paddw   %%mm5, %%mm4        \n\t"
-                "movq    %%mm0, (%0)         \n\t"
-                "movq    %%mm4, 8(%0)        \n\t"
-                :: "r"(&b[i]), "r"(&ref[i])
-                 : "memory"
-               );
-        }
-        snow_horizontal_compose_liftS_lead_out(i, b, b, ref, width, w_l);
-    }
-
-    { // Lift 3
-        IDWTELEM * const src = b+w2;
-        i = 0;
-
-        for(; i<w_r-7; i+=8){
-            __asm__ volatile(
-                "movq    2(%1), %%mm2        \n\t"
-                "movq   10(%1), %%mm6        \n\t"
-                "paddw    (%1), %%mm2        \n\t"
-                "paddw   8(%1), %%mm6        \n\t"
-                "movq     (%0), %%mm0        \n\t"
-                "movq    8(%0), %%mm4        \n\t"
-                "paddw   %%mm2, %%mm0        \n\t"
-                "paddw   %%mm6, %%mm4        \n\t"
-                "psraw      $1, %%mm2        \n\t"
-                "psraw      $1, %%mm6        \n\t"
-                "paddw   %%mm0, %%mm2        \n\t"
-                "paddw   %%mm4, %%mm6        \n\t"
-                "movq    %%mm2, (%2)         \n\t"
-                "movq    %%mm6, 8(%2)        \n\t"
-                :: "r"(&src[i]), "r"(&b[i]), "r"(&temp[i])
-                 : "memory"
-               );
-        }
-        snow_horizontal_compose_lift_lead_out(i, temp, src, b, width, w_r, 1, -W_AM, W_AO+1, W_AS);
-    }
-
-    {
-        snow_interleave_line_header(&i, width, b, temp);
-
-        for (; (i & 0x1E) != 0x1E; i-=2){
-            b[i+1] = temp[i>>1];
-            b[i] = b[i>>1];
-        }
-        for (i-=30; i>=0; i-=32){
-            __asm__ volatile(
-                "movq        (%1), %%mm0       \n\t"
-                "movq       8(%1), %%mm2       \n\t"
-                "movq      16(%1), %%mm4       \n\t"
-                "movq      24(%1), %%mm6       \n\t"
-                "movq        (%1), %%mm1       \n\t"
-                "movq       8(%1), %%mm3       \n\t"
-                "movq      16(%1), %%mm5       \n\t"
-                "movq      24(%1), %%mm7       \n\t"
-                "punpcklwd   (%2), %%mm0       \n\t"
-                "punpcklwd  8(%2), %%mm2       \n\t"
-                "punpcklwd 16(%2), %%mm4       \n\t"
-                "punpcklwd 24(%2), %%mm6       \n\t"
-                "movq       %%mm0, (%0)        \n\t"
-                "movq       %%mm2, 16(%0)      \n\t"
-                "movq       %%mm4, 32(%0)      \n\t"
-                "movq       %%mm6, 48(%0)      \n\t"
-                "punpckhwd   (%2), %%mm1       \n\t"
-                "punpckhwd  8(%2), %%mm3       \n\t"
-                "punpckhwd 16(%2), %%mm5       \n\t"
-                "punpckhwd 24(%2), %%mm7       \n\t"
-                "movq       %%mm1, 8(%0)       \n\t"
-                "movq       %%mm3, 24(%0)      \n\t"
-                "movq       %%mm5, 40(%0)      \n\t"
-                "movq       %%mm7, 56(%0)      \n\t"
-                :: "r"(&b[i]), "r"(&b[i>>1]), "r"(&temp[i>>1])
-                 : "memory"
-               );
-        }
-    }
-}
-
-#if HAVE_7REGS
-#define snow_vertical_compose_sse2_load_add(op,r,t0,t1,t2,t3)\
-        ""op" ("r",%%"REG_d"), %%"t0"      \n\t"\
-        ""op" 16("r",%%"REG_d"), %%"t1"    \n\t"\
-        ""op" 32("r",%%"REG_d"), %%"t2"    \n\t"\
-        ""op" 48("r",%%"REG_d"), %%"t3"    \n\t"
-
-#define snow_vertical_compose_sse2_load(r,t0,t1,t2,t3)\
-        snow_vertical_compose_sse2_load_add("movdqa",r,t0,t1,t2,t3)
-
-#define snow_vertical_compose_sse2_add(r,t0,t1,t2,t3)\
-        snow_vertical_compose_sse2_load_add("paddw",r,t0,t1,t2,t3)
-
-#define snow_vertical_compose_r2r_sub(s0,s1,s2,s3,t0,t1,t2,t3)\
-        "psubw %%"s0", %%"t0" \n\t"\
-        "psubw %%"s1", %%"t1" \n\t"\
-        "psubw %%"s2", %%"t2" \n\t"\
-        "psubw %%"s3", %%"t3" \n\t"
-
-#define snow_vertical_compose_sse2_store(w,s0,s1,s2,s3)\
-        "movdqa %%"s0", ("w",%%"REG_d")      \n\t"\
-        "movdqa %%"s1", 16("w",%%"REG_d")    \n\t"\
-        "movdqa %%"s2", 32("w",%%"REG_d")    \n\t"\
-        "movdqa %%"s3", 48("w",%%"REG_d")    \n\t"
-
-#define snow_vertical_compose_sra(n,t0,t1,t2,t3)\
-        "psraw $"n", %%"t0" \n\t"\
-        "psraw $"n", %%"t1" \n\t"\
-        "psraw $"n", %%"t2" \n\t"\
-        "psraw $"n", %%"t3" \n\t"
-
-#define snow_vertical_compose_r2r_add(s0,s1,s2,s3,t0,t1,t2,t3)\
-        "paddw %%"s0", %%"t0" \n\t"\
-        "paddw %%"s1", %%"t1" \n\t"\
-        "paddw %%"s2", %%"t2" \n\t"\
-        "paddw %%"s3", %%"t3" \n\t"
-
-#define snow_vertical_compose_r2r_pmulhw(s0,s1,s2,s3,t0,t1,t2,t3)\
-        "pmulhw %%"s0", %%"t0" \n\t"\
-        "pmulhw %%"s1", %%"t1" \n\t"\
-        "pmulhw %%"s2", %%"t2" \n\t"\
-        "pmulhw %%"s3", %%"t3" \n\t"
-
-#define snow_vertical_compose_sse2_move(s0,s1,s2,s3,t0,t1,t2,t3)\
-        "movdqa %%"s0", %%"t0" \n\t"\
-        "movdqa %%"s1", %%"t1" \n\t"\
-        "movdqa %%"s2", %%"t2" \n\t"\
-        "movdqa %%"s3", %%"t3" \n\t"
-
-static void ff_snow_vertical_compose97i_sse2(IDWTELEM *b0, IDWTELEM *b1, IDWTELEM *b2, IDWTELEM *b3, IDWTELEM *b4, IDWTELEM *b5, int width){
-    x86_reg i = width;
-
-    while(i & 0x1F)
-    {
-        i--;
-        b4[i] -= (W_DM*(b3[i] + b5[i])+W_DO)>>W_DS;
-        b3[i] -= (W_CM*(b2[i] + b4[i])+W_CO)>>W_CS;
-        b2[i] += (W_BM*(b1[i] + b3[i])+4*b2[i]+W_BO)>>W_BS;
-        b1[i] += (W_AM*(b0[i] + b2[i])+W_AO)>>W_AS;
-    }
-    i+=i;
-
-         __asm__ volatile (
-        "jmp 2f                                      \n\t"
-        "1:                                          \n\t"
-        snow_vertical_compose_sse2_load("%4","xmm0","xmm2","xmm4","xmm6")
-        snow_vertical_compose_sse2_add("%6","xmm0","xmm2","xmm4","xmm6")
-
-
-        "pcmpeqw    %%xmm0, %%xmm0                   \n\t"
-        "pcmpeqw    %%xmm2, %%xmm2                   \n\t"
-        "paddw      %%xmm2, %%xmm2                   \n\t"
-        "paddw      %%xmm0, %%xmm2                   \n\t"
-        "psllw         $13, %%xmm2                   \n\t"
-        snow_vertical_compose_r2r_add("xmm0","xmm0","xmm0","xmm0","xmm1","xmm3","xmm5","xmm7")
-        snow_vertical_compose_r2r_pmulhw("xmm2","xmm2","xmm2","xmm2","xmm1","xmm3","xmm5","xmm7")
-        snow_vertical_compose_sse2_add("%5","xmm1","xmm3","xmm5","xmm7")
-        snow_vertical_compose_sse2_store("%5","xmm1","xmm3","xmm5","xmm7")
-        snow_vertical_compose_sse2_load("%4","xmm0","xmm2","xmm4","xmm6")
-        snow_vertical_compose_sse2_add("%3","xmm1","xmm3","xmm5","xmm7")
-        snow_vertical_compose_r2r_sub("xmm1","xmm3","xmm5","xmm7","xmm0","xmm2","xmm4","xmm6")
-        snow_vertical_compose_sse2_store("%4","xmm0","xmm2","xmm4","xmm6")
-
-        "pcmpeqw %%xmm7, %%xmm7                      \n\t"
-        "pcmpeqw %%xmm5, %%xmm5                      \n\t"
-        "psllw $15, %%xmm7                           \n\t"
-        "psrlw $13, %%xmm5                           \n\t"
-        "paddw %%xmm7, %%xmm5                        \n\t"
-        snow_vertical_compose_r2r_add("xmm5","xmm5","xmm5","xmm5","xmm0","xmm2","xmm4","xmm6")
-        "movq   (%2,%%"REG_d"), %%xmm1        \n\t"
-        "movq  8(%2,%%"REG_d"), %%xmm3        \n\t"
-        "paddw %%xmm7, %%xmm1                        \n\t"
-        "paddw %%xmm7, %%xmm3                        \n\t"
-        "pavgw %%xmm1, %%xmm0                        \n\t"
-        "pavgw %%xmm3, %%xmm2                        \n\t"
-        "movq 16(%2,%%"REG_d"), %%xmm1        \n\t"
-        "movq 24(%2,%%"REG_d"), %%xmm3        \n\t"
-        "paddw %%xmm7, %%xmm1                        \n\t"
-        "paddw %%xmm7, %%xmm3                        \n\t"
-        "pavgw %%xmm1, %%xmm4                        \n\t"
-        "pavgw %%xmm3, %%xmm6                        \n\t"
-        snow_vertical_compose_r2r_sub("xmm7","xmm7","xmm7","xmm7","xmm0","xmm2","xmm4","xmm6")
-        snow_vertical_compose_sra("1","xmm0","xmm2","xmm4","xmm6")
-        snow_vertical_compose_sse2_add("%3","xmm0","xmm2","xmm4","xmm6")
-
-        snow_vertical_compose_sra("2","xmm0","xmm2","xmm4","xmm6")
-        snow_vertical_compose_sse2_add("%3","xmm0","xmm2","xmm4","xmm6")
-        snow_vertical_compose_sse2_store("%3","xmm0","xmm2","xmm4","xmm6")
-        snow_vertical_compose_sse2_add("%1","xmm0","xmm2","xmm4","xmm6")
-        snow_vertical_compose_sse2_move("xmm0","xmm2","xmm4","xmm6","xmm1","xmm3","xmm5","xmm7")
-        snow_vertical_compose_sra("1","xmm0","xmm2","xmm4","xmm6")
-        snow_vertical_compose_r2r_add("xmm1","xmm3","xmm5","xmm7","xmm0","xmm2","xmm4","xmm6")
-        snow_vertical_compose_sse2_add("%2","xmm0","xmm2","xmm4","xmm6")
-        snow_vertical_compose_sse2_store("%2","xmm0","xmm2","xmm4","xmm6")
-
-        "2:                                          \n\t"
-        "sub $64, %%"REG_d"                          \n\t"
-        "jge 1b                                      \n\t"
-        :"+d"(i)
-        :"r"(b0),"r"(b1),"r"(b2),"r"(b3),"r"(b4),"r"(b5));
-}
-
-#define snow_vertical_compose_mmx_load_add(op,r,t0,t1,t2,t3)\
-        ""op" ("r",%%"REG_d"), %%"t0"   \n\t"\
-        ""op" 8("r",%%"REG_d"), %%"t1"  \n\t"\
-        ""op" 16("r",%%"REG_d"), %%"t2" \n\t"\
-        ""op" 24("r",%%"REG_d"), %%"t3" \n\t"
-
-#define snow_vertical_compose_mmx_load(r,t0,t1,t2,t3)\
-        snow_vertical_compose_mmx_load_add("movq",r,t0,t1,t2,t3)
-
-#define snow_vertical_compose_mmx_add(r,t0,t1,t2,t3)\
-        snow_vertical_compose_mmx_load_add("paddw",r,t0,t1,t2,t3)
-
-#define snow_vertical_compose_mmx_store(w,s0,s1,s2,s3)\
-        "movq %%"s0", ("w",%%"REG_d")   \n\t"\
-        "movq %%"s1", 8("w",%%"REG_d")  \n\t"\
-        "movq %%"s2", 16("w",%%"REG_d") \n\t"\
-        "movq %%"s3", 24("w",%%"REG_d") \n\t"
-
-#define snow_vertical_compose_mmx_move(s0,s1,s2,s3,t0,t1,t2,t3)\
-        "movq %%"s0", %%"t0" \n\t"\
-        "movq %%"s1", %%"t1" \n\t"\
-        "movq %%"s2", %%"t2" \n\t"\
-        "movq %%"s3", %%"t3" \n\t"
-
-
-static void ff_snow_vertical_compose97i_mmx(IDWTELEM *b0, IDWTELEM *b1, IDWTELEM *b2, IDWTELEM *b3, IDWTELEM *b4, IDWTELEM *b5, int width){
-    x86_reg i = width;
-    while(i & 15)
-    {
-        i--;
-        b4[i] -= (W_DM*(b3[i] + b5[i])+W_DO)>>W_DS;
-        b3[i] -= (W_CM*(b2[i] + b4[i])+W_CO)>>W_CS;
-        b2[i] += (W_BM*(b1[i] + b3[i])+4*b2[i]+W_BO)>>W_BS;
-        b1[i] += (W_AM*(b0[i] + b2[i])+W_AO)>>W_AS;
-    }
-    i+=i;
-    __asm__ volatile(
-        "jmp 2f                                      \n\t"
-        "1:                                          \n\t"
-
-        snow_vertical_compose_mmx_load("%4","mm1","mm3","mm5","mm7")
-        snow_vertical_compose_mmx_add("%6","mm1","mm3","mm5","mm7")
-        "pcmpeqw    %%mm0, %%mm0                     \n\t"
-        "pcmpeqw    %%mm2, %%mm2                     \n\t"
-        "paddw      %%mm2, %%mm2                     \n\t"
-        "paddw      %%mm0, %%mm2                     \n\t"
-        "psllw        $13, %%mm2                     \n\t"
-        snow_vertical_compose_r2r_add("mm0","mm0","mm0","mm0","mm1","mm3","mm5","mm7")
-        snow_vertical_compose_r2r_pmulhw("mm2","mm2","mm2","mm2","mm1","mm3","mm5","mm7")
-        snow_vertical_compose_mmx_add("%5","mm1","mm3","mm5","mm7")
-        snow_vertical_compose_mmx_store("%5","mm1","mm3","mm5","mm7")
-        snow_vertical_compose_mmx_load("%4","mm0","mm2","mm4","mm6")
-        snow_vertical_compose_mmx_add("%3","mm1","mm3","mm5","mm7")
-        snow_vertical_compose_r2r_sub("mm1","mm3","mm5","mm7","mm0","mm2","mm4","mm6")
-        snow_vertical_compose_mmx_store("%4","mm0","mm2","mm4","mm6")
-        "pcmpeqw %%mm7, %%mm7                        \n\t"
-        "pcmpeqw %%mm5, %%mm5                        \n\t"
-        "psllw $15, %%mm7                            \n\t"
-        "psrlw $13, %%mm5                            \n\t"
-        "paddw %%mm7, %%mm5                          \n\t"
-        snow_vertical_compose_r2r_add("mm5","mm5","mm5","mm5","mm0","mm2","mm4","mm6")
-        "movq   (%2,%%"REG_d"), %%mm1         \n\t"
-        "movq  8(%2,%%"REG_d"), %%mm3         \n\t"
-        "paddw %%mm7, %%mm1                          \n\t"
-        "paddw %%mm7, %%mm3                          \n\t"
-        "pavgw %%mm1, %%mm0                          \n\t"
-        "pavgw %%mm3, %%mm2                          \n\t"
-        "movq 16(%2,%%"REG_d"), %%mm1         \n\t"
-        "movq 24(%2,%%"REG_d"), %%mm3         \n\t"
-        "paddw %%mm7, %%mm1                          \n\t"
-        "paddw %%mm7, %%mm3                          \n\t"
-        "pavgw %%mm1, %%mm4                          \n\t"
-        "pavgw %%mm3, %%mm6                          \n\t"
-        snow_vertical_compose_r2r_sub("mm7","mm7","mm7","mm7","mm0","mm2","mm4","mm6")
-        snow_vertical_compose_sra("1","mm0","mm2","mm4","mm6")
-        snow_vertical_compose_mmx_add("%3","mm0","mm2","mm4","mm6")
-
-        snow_vertical_compose_sra("2","mm0","mm2","mm4","mm6")
-        snow_vertical_compose_mmx_add("%3","mm0","mm2","mm4","mm6")
-        snow_vertical_compose_mmx_store("%3","mm0","mm2","mm4","mm6")
-        snow_vertical_compose_mmx_add("%1","mm0","mm2","mm4","mm6")
-        snow_vertical_compose_mmx_move("mm0","mm2","mm4","mm6","mm1","mm3","mm5","mm7")
-        snow_vertical_compose_sra("1","mm0","mm2","mm4","mm6")
-        snow_vertical_compose_r2r_add("mm1","mm3","mm5","mm7","mm0","mm2","mm4","mm6")
-        snow_vertical_compose_mmx_add("%2","mm0","mm2","mm4","mm6")
-        snow_vertical_compose_mmx_store("%2","mm0","mm2","mm4","mm6")
-
-        "2:                                          \n\t"
-        "sub $32, %%"REG_d"                          \n\t"
-        "jge 1b                                      \n\t"
-        :"+d"(i)
-        :"r"(b0),"r"(b1),"r"(b2),"r"(b3),"r"(b4),"r"(b5));
-}
-#endif //HAVE_7REGS
-
-#define snow_inner_add_yblock_sse2_header \
-    IDWTELEM * * dst_array = sb->line + src_y;\
-    x86_reg tmp;\
-    __asm__ volatile(\
-             "mov  %7, %%"REG_c"             \n\t"\
-             "mov  %6, %2                    \n\t"\
-             "mov  %4, %%"REG_S"             \n\t"\
-             "pxor %%xmm7, %%xmm7            \n\t" /* 0 */\
-             "pcmpeqd %%xmm3, %%xmm3         \n\t"\
-             "psllw $15, %%xmm3              \n\t"\
-             "psrlw $12, %%xmm3              \n\t" /* FRAC_BITS >> 1 */\
-             "1:                             \n\t"\
-             "mov %1, %%"REG_D"              \n\t"\
-             "mov (%%"REG_D"), %%"REG_D"     \n\t"\
-             "add %3, %%"REG_D"              \n\t"
-
-#define snow_inner_add_yblock_sse2_start_8(out_reg1, out_reg2, ptr_offset, s_offset)\
-             "mov "PTR_SIZE"*"ptr_offset"(%%"REG_a"), %%"REG_d"; \n\t"\
-             "movq (%%"REG_d"), %%"out_reg1" \n\t"\
-             "movq (%%"REG_d", %%"REG_c"), %%"out_reg2" \n\t"\
-             "punpcklbw %%xmm7, %%"out_reg1" \n\t"\
-             "punpcklbw %%xmm7, %%"out_reg2" \n\t"\
-             "movq "s_offset"(%%"REG_S"), %%xmm0 \n\t"\
-             "movq "s_offset"+16(%%"REG_S"), %%xmm4 \n\t"\
-             "punpcklbw %%xmm7, %%xmm0       \n\t"\
-             "punpcklbw %%xmm7, %%xmm4       \n\t"\
-             "pmullw %%xmm0, %%"out_reg1"    \n\t"\
-             "pmullw %%xmm4, %%"out_reg2"    \n\t"
-
-#define snow_inner_add_yblock_sse2_start_16(out_reg1, out_reg2, ptr_offset, s_offset)\
-             "mov "PTR_SIZE"*"ptr_offset"(%%"REG_a"), %%"REG_d"; \n\t"\
-             "movq (%%"REG_d"), %%"out_reg1" \n\t"\
-             "movq 8(%%"REG_d"), %%"out_reg2" \n\t"\
-             "punpcklbw %%xmm7, %%"out_reg1" \n\t"\
-             "punpcklbw %%xmm7, %%"out_reg2" \n\t"\
-             "movq "s_offset"(%%"REG_S"), %%xmm0 \n\t"\
-             "movq "s_offset"+8(%%"REG_S"), %%xmm4 \n\t"\
-             "punpcklbw %%xmm7, %%xmm0       \n\t"\
-             "punpcklbw %%xmm7, %%xmm4       \n\t"\
-             "pmullw %%xmm0, %%"out_reg1"    \n\t"\
-             "pmullw %%xmm4, %%"out_reg2"    \n\t"
-
-#define snow_inner_add_yblock_sse2_accum_8(ptr_offset, s_offset) \
-             snow_inner_add_yblock_sse2_start_8("xmm2", "xmm6", ptr_offset, s_offset)\
-             "paddusw %%xmm2, %%xmm1         \n\t"\
-             "paddusw %%xmm6, %%xmm5         \n\t"
-
-#define snow_inner_add_yblock_sse2_accum_16(ptr_offset, s_offset) \
-             snow_inner_add_yblock_sse2_start_16("xmm2", "xmm6", ptr_offset, s_offset)\
-             "paddusw %%xmm2, %%xmm1         \n\t"\
-             "paddusw %%xmm6, %%xmm5         \n\t"
-
-#define snow_inner_add_yblock_sse2_end_common1\
-             "add $32, %%"REG_S"             \n\t"\
-             "add %%"REG_c", %0              \n\t"\
-             "add %%"REG_c", "PTR_SIZE"*3(%%"REG_a");\n\t"\
-             "add %%"REG_c", "PTR_SIZE"*2(%%"REG_a");\n\t"\
-             "add %%"REG_c", "PTR_SIZE"*1(%%"REG_a");\n\t"\
-             "add %%"REG_c", (%%"REG_a")     \n\t"
-
-#define snow_inner_add_yblock_sse2_end_common2\
-             "jnz 1b                         \n\t"\
-             :"+m"(dst8),"+m"(dst_array),"=&r"(tmp)\
-             :\
-             "rm"((x86_reg)(src_x<<1)),"m"(obmc),"a"(block),"m"(b_h),"m"(src_stride):\
-             "%"REG_c"","%"REG_S"","%"REG_D"","%"REG_d"");
-
-#define snow_inner_add_yblock_sse2_end_8\
-             "sal $1, %%"REG_c"              \n\t"\
-             "addl $"PTR_SIZE"*2, %1         \n\t"\
-             snow_inner_add_yblock_sse2_end_common1\
-             "sar $1, %%"REG_c"              \n\t"\
-             "sub $2, %2                     \n\t"\
-             snow_inner_add_yblock_sse2_end_common2
-
-#define snow_inner_add_yblock_sse2_end_16\
-             "addl $"PTR_SIZE"*1, %1         \n\t"\
-             snow_inner_add_yblock_sse2_end_common1\
-             "dec %2                         \n\t"\
-             snow_inner_add_yblock_sse2_end_common2
-
-static void inner_add_yblock_bw_8_obmc_16_bh_even_sse2(const uint8_t *obmc, const x86_reg obmc_stride, uint8_t * * block, int b_w, x86_reg b_h,
-                      int src_x, int src_y, x86_reg src_stride, slice_buffer * sb, int add, uint8_t * dst8){
-snow_inner_add_yblock_sse2_header
-snow_inner_add_yblock_sse2_start_8("xmm1", "xmm5", "3", "0")
-snow_inner_add_yblock_sse2_accum_8("2", "8")
-snow_inner_add_yblock_sse2_accum_8("1", "128")
-snow_inner_add_yblock_sse2_accum_8("0", "136")
-
-             "mov %0, %%"REG_d"              \n\t"
-             "movdqa (%%"REG_D"), %%xmm0     \n\t"
-             "movdqa %%xmm1, %%xmm2          \n\t"
-
-             "punpckhwd %%xmm7, %%xmm1       \n\t"
-             "punpcklwd %%xmm7, %%xmm2       \n\t"
-             "paddd %%xmm2, %%xmm0           \n\t"
-             "movdqa 16(%%"REG_D"), %%xmm2   \n\t"
-             "paddd %%xmm1, %%xmm2           \n\t"
-             "paddd %%xmm3, %%xmm0           \n\t"
-             "paddd %%xmm3, %%xmm2           \n\t"
-
-             "mov %1, %%"REG_D"              \n\t"
-             "mov "PTR_SIZE"(%%"REG_D"), %%"REG_D";\n\t"
-             "add %3, %%"REG_D"              \n\t"
-
-             "movdqa (%%"REG_D"), %%xmm4     \n\t"
-             "movdqa %%xmm5, %%xmm6          \n\t"
-             "punpckhwd %%xmm7, %%xmm5       \n\t"
-             "punpcklwd %%xmm7, %%xmm6       \n\t"
-             "paddd %%xmm6, %%xmm4           \n\t"
-             "movdqa 16(%%"REG_D"), %%xmm6   \n\t"
-             "paddd %%xmm5, %%xmm6           \n\t"
-             "paddd %%xmm3, %%xmm4           \n\t"
-             "paddd %%xmm3, %%xmm6           \n\t"
-
-             "psrad $8, %%xmm0               \n\t" /* FRAC_BITS. */
-             "psrad $8, %%xmm2               \n\t" /* FRAC_BITS. */
-             "packssdw %%xmm2, %%xmm0        \n\t"
-             "packuswb %%xmm7, %%xmm0        \n\t"
-             "movq %%xmm0, (%%"REG_d")       \n\t"
-
-             "psrad $8, %%xmm4               \n\t" /* FRAC_BITS. */
-             "psrad $8, %%xmm6               \n\t" /* FRAC_BITS. */
-             "packssdw %%xmm6, %%xmm4        \n\t"
-             "packuswb %%xmm7, %%xmm4        \n\t"
-             "movq %%xmm4, (%%"REG_d",%%"REG_c");\n\t"
-snow_inner_add_yblock_sse2_end_8
-}
-
-static void inner_add_yblock_bw_16_obmc_32_sse2(const uint8_t *obmc, const x86_reg obmc_stride, uint8_t * * block, int b_w, x86_reg b_h,
-                      int src_x, int src_y, x86_reg src_stride, slice_buffer * sb, int add, uint8_t * dst8){
-snow_inner_add_yblock_sse2_header
-snow_inner_add_yblock_sse2_start_16("xmm1", "xmm5", "3", "0")
-snow_inner_add_yblock_sse2_accum_16("2", "16")
-snow_inner_add_yblock_sse2_accum_16("1", "512")
-snow_inner_add_yblock_sse2_accum_16("0", "528")
-
-             "mov %0, %%"REG_d"              \n\t"
-             "psrlw $4, %%xmm1               \n\t"
-             "psrlw $4, %%xmm5               \n\t"
-             "paddw   (%%"REG_D"), %%xmm1    \n\t"
-             "paddw 16(%%"REG_D"), %%xmm5    \n\t"
-             "paddw %%xmm3, %%xmm1           \n\t"
-             "paddw %%xmm3, %%xmm5           \n\t"
-             "psraw $4, %%xmm1               \n\t" /* FRAC_BITS. */
-             "psraw $4, %%xmm5               \n\t" /* FRAC_BITS. */
-             "packuswb %%xmm5, %%xmm1        \n\t"
-
-             "movdqu %%xmm1, (%%"REG_d")       \n\t"
-
-snow_inner_add_yblock_sse2_end_16
-}
-
-#define snow_inner_add_yblock_mmx_header \
-    IDWTELEM * * dst_array = sb->line + src_y;\
-    x86_reg tmp;\
-    __asm__ volatile(\
-             "mov  %7, %%"REG_c"             \n\t"\
-             "mov  %6, %2                    \n\t"\
-             "mov  %4, %%"REG_S"             \n\t"\
-             "pxor %%mm7, %%mm7              \n\t" /* 0 */\
-             "pcmpeqd %%mm3, %%mm3           \n\t"\
-             "psllw $15, %%mm3               \n\t"\
-             "psrlw $12, %%mm3               \n\t" /* FRAC_BITS >> 1 */\
-             "1:                             \n\t"\
-             "mov %1, %%"REG_D"              \n\t"\
-             "mov (%%"REG_D"), %%"REG_D"     \n\t"\
-             "add %3, %%"REG_D"              \n\t"
-
-#define snow_inner_add_yblock_mmx_start(out_reg1, out_reg2, ptr_offset, s_offset, d_offset)\
-             "mov "PTR_SIZE"*"ptr_offset"(%%"REG_a"), %%"REG_d"; \n\t"\
-             "movd "d_offset"(%%"REG_d"), %%"out_reg1" \n\t"\
-             "movd "d_offset"+4(%%"REG_d"), %%"out_reg2" \n\t"\
-             "punpcklbw %%mm7, %%"out_reg1" \n\t"\
-             "punpcklbw %%mm7, %%"out_reg2" \n\t"\
-             "movd "s_offset"(%%"REG_S"), %%mm0 \n\t"\
-             "movd "s_offset"+4(%%"REG_S"), %%mm4 \n\t"\
-             "punpcklbw %%mm7, %%mm0       \n\t"\
-             "punpcklbw %%mm7, %%mm4       \n\t"\
-             "pmullw %%mm0, %%"out_reg1"    \n\t"\
-             "pmullw %%mm4, %%"out_reg2"    \n\t"
-
-#define snow_inner_add_yblock_mmx_accum(ptr_offset, s_offset, d_offset) \
-             snow_inner_add_yblock_mmx_start("mm2", "mm6", ptr_offset, s_offset, d_offset)\
-             "paddusw %%mm2, %%mm1         \n\t"\
-             "paddusw %%mm6, %%mm5         \n\t"
-
-#define snow_inner_add_yblock_mmx_mix(read_offset, write_offset)\
-             "mov %0, %%"REG_d"              \n\t"\
-             "psrlw $4, %%mm1                \n\t"\
-             "psrlw $4, %%mm5                \n\t"\
-             "paddw "read_offset"(%%"REG_D"), %%mm1 \n\t"\
-             "paddw "read_offset"+8(%%"REG_D"), %%mm5 \n\t"\
-             "paddw %%mm3, %%mm1             \n\t"\
-             "paddw %%mm3, %%mm5             \n\t"\
-             "psraw $4, %%mm1                \n\t"\
-             "psraw $4, %%mm5                \n\t"\
-             "packuswb %%mm5, %%mm1          \n\t"\
-             "movq %%mm1, "write_offset"(%%"REG_d") \n\t"
-
-#define snow_inner_add_yblock_mmx_end(s_step)\
-             "add $"s_step", %%"REG_S"             \n\t"\
-             "add %%"REG_c", "PTR_SIZE"*3(%%"REG_a");\n\t"\
-             "add %%"REG_c", "PTR_SIZE"*2(%%"REG_a");\n\t"\
-             "add %%"REG_c", "PTR_SIZE"*1(%%"REG_a");\n\t"\
-             "add %%"REG_c", (%%"REG_a")     \n\t"\
-             "add"OPSIZE " $"PTR_SIZE"*1, %1 \n\t"\
-             "add %%"REG_c", %0              \n\t"\
-             "dec %2                         \n\t"\
-             "jnz 1b                         \n\t"\
-             :"+m"(dst8),"+m"(dst_array),"=&r"(tmp)\
-             :\
-             "rm"((x86_reg)(src_x<<1)),"m"(obmc),"a"(block),"m"(b_h),"m"(src_stride):\
-             "%"REG_c"","%"REG_S"","%"REG_D"","%"REG_d"");
-
-static void inner_add_yblock_bw_8_obmc_16_mmx(const uint8_t *obmc, const x86_reg obmc_stride, uint8_t * * block, int b_w, x86_reg b_h,
-                      int src_x, int src_y, x86_reg src_stride, slice_buffer * sb, int add, uint8_t * dst8){
-snow_inner_add_yblock_mmx_header
-snow_inner_add_yblock_mmx_start("mm1", "mm5", "3", "0", "0")
-snow_inner_add_yblock_mmx_accum("2", "8", "0")
-snow_inner_add_yblock_mmx_accum("1", "128", "0")
-snow_inner_add_yblock_mmx_accum("0", "136", "0")
-snow_inner_add_yblock_mmx_mix("0", "0")
-snow_inner_add_yblock_mmx_end("16")
-}
-
-static void inner_add_yblock_bw_16_obmc_32_mmx(const uint8_t *obmc, const x86_reg obmc_stride, uint8_t * * block, int b_w, x86_reg b_h,
-                      int src_x, int src_y, x86_reg src_stride, slice_buffer * sb, int add, uint8_t * dst8){
-snow_inner_add_yblock_mmx_header
-snow_inner_add_yblock_mmx_start("mm1", "mm5", "3", "0", "0")
-snow_inner_add_yblock_mmx_accum("2", "16", "0")
-snow_inner_add_yblock_mmx_accum("1", "512", "0")
-snow_inner_add_yblock_mmx_accum("0", "528", "0")
-snow_inner_add_yblock_mmx_mix("0", "0")
-
-snow_inner_add_yblock_mmx_start("mm1", "mm5", "3", "8", "8")
-snow_inner_add_yblock_mmx_accum("2", "24", "8")
-snow_inner_add_yblock_mmx_accum("1", "520", "8")
-snow_inner_add_yblock_mmx_accum("0", "536", "8")
-snow_inner_add_yblock_mmx_mix("16", "8")
-snow_inner_add_yblock_mmx_end("32")
-}
-
-static void ff_snow_inner_add_yblock_sse2(const uint8_t *obmc, const int obmc_stride, uint8_t * * block, int b_w, int b_h,
-                           int src_x, int src_y, int src_stride, slice_buffer * sb, int add, uint8_t * dst8){
-
-    if (b_w == 16)
-        inner_add_yblock_bw_16_obmc_32_sse2(obmc, obmc_stride, block, b_w, b_h, src_x,src_y, src_stride, sb, add, dst8);
-    else if (b_w == 8 && obmc_stride == 16) {
-        if (!(b_h & 1))
-            inner_add_yblock_bw_8_obmc_16_bh_even_sse2(obmc, obmc_stride, block, b_w, b_h, src_x,src_y, src_stride, sb, add, dst8);
-        else
-            inner_add_yblock_bw_8_obmc_16_mmx(obmc, obmc_stride, block, b_w, b_h, src_x,src_y, src_stride, sb, add, dst8);
-    } else
-         ff_snow_inner_add_yblock(obmc, obmc_stride, block, b_w, b_h, src_x,src_y, src_stride, sb, add, dst8);
-}
-
-static void ff_snow_inner_add_yblock_mmx(const uint8_t *obmc, const int obmc_stride, uint8_t * * block, int b_w, int b_h,
-                          int src_x, int src_y, int src_stride, slice_buffer * sb, int add, uint8_t * dst8){
-    if (b_w == 16)
-        inner_add_yblock_bw_16_obmc_32_mmx(obmc, obmc_stride, block, b_w, b_h, src_x,src_y, src_stride, sb, add, dst8);
-    else if (b_w == 8 && obmc_stride == 16)
-        inner_add_yblock_bw_8_obmc_16_mmx(obmc, obmc_stride, block, b_w, b_h, src_x,src_y, src_stride, sb, add, dst8);
-    else
-        ff_snow_inner_add_yblock(obmc, obmc_stride, block, b_w, b_h, src_x,src_y, src_stride, sb, add, dst8);
-}
-
-#endif /* HAVE_INLINE_ASM */
-
-void ff_dwt_init_x86(DWTContext *c)
-{
-#if HAVE_INLINE_ASM
-    int mm_flags = av_get_cpu_flags();
-
-    if (mm_flags & AV_CPU_FLAG_MMX) {
-        if(mm_flags & AV_CPU_FLAG_SSE2 & 0){
-            c->horizontal_compose97i = ff_snow_horizontal_compose97i_sse2;
-#if HAVE_7REGS
-            c->vertical_compose97i = ff_snow_vertical_compose97i_sse2;
-#endif
-            c->inner_add_yblock = ff_snow_inner_add_yblock_sse2;
-        }
-        else{
-            if (mm_flags & AV_CPU_FLAG_MMXEXT) {
-            c->horizontal_compose97i = ff_snow_horizontal_compose97i_mmx;
-#if HAVE_7REGS
-            c->vertical_compose97i = ff_snow_vertical_compose97i_mmx;
-#endif
-            }
-            c->inner_add_yblock = ff_snow_inner_add_yblock_mmx;
-        }
-    }
-#endif /* HAVE_INLINE_ASM */
-}