DIRAC Decoder stable version, MMX support removed.

Look for MMX_DISABLED to find the disabled functions.

Authors of this code are Marco Gerards <marco@gnu.org> and David Conrad <lessen42@gmail.com>
With changes from Jordi Ortiz <nenjordi@gmail.com>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

1 files changed, 201 insertions, 0 deletions

diff --git a/libavcodec/diracdsp.c b/libavcodec/diracdsp.c
new file mode 100644
index 0000000000..4c3cddbdfc
--- /dev/null
+++ b/libavcodec/diracdsp.c
@@ -0,0 +1,201 @@
+/*
+ * Copyright (C) 2009 David Conrad
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg 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.
+ *
+ * FFmpeg 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 FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "dsputil.h"
+#include "diracdsp.h"
+//MMX_DISABLE #include "libavcodec/x86/diracdsp_mmx.h"
+
+#define FILTER(src, stride) \
+  ((21*((src)[ 0*stride] + (src)[1*stride]) \
+    -7*((src)[-1*stride] + (src)[2*stride]) \
+    +3*((src)[-2*stride] + (src)[3*stride]) \
+    -1*((src)[-3*stride] + (src)[4*stride]) + 16) >> 5)
+
+static void dirac_hpel_filter(uint8_t *dsth, uint8_t *dstv, uint8_t *dstc, uint8_t *src,
+                              int stride, int width, int height)
+{
+    int x, y;
+
+    for (y = 0; y < height; y++) {
+        for (x = -3; x < width+5; x++)
+            dstv[x] = av_clip_uint8(FILTER(src+x, stride));
+
+        for (x = 0; x < width; x++)
+            dstc[x] = av_clip_uint8(FILTER(dstv+x, 1));
+
+        for (x = 0; x < width; x++)
+            dsth[x] = av_clip_uint8(FILTER(src+x, 1));
+
+        src  += stride;
+        dsth += stride;
+        dstv += stride;
+        dstc += stride;
+    }
+}
+
+#define PIXOP_BILINEAR(PFX, OP, WIDTH) \
+static void ff_ ## PFX ## _dirac_pixels ## WIDTH ## _bilinear_c(uint8_t *dst, const uint8_t *src[5], int stride, int h)\
+{\
+    int x;\
+    const uint8_t *s0 = src[0];\
+    const uint8_t *s1 = src[1];\
+    const uint8_t *s2 = src[2];\
+    const uint8_t *s3 = src[3];\
+    const uint8_t *w  = src[4];\
+\
+    while (h--) {\
+        for (x = 0; x < WIDTH; x++) {\
+            OP(dst[x], (s0[x]*w[0] + s1[x]*w[1] + s2[x]*w[2] + s3[x]*w[3] + 8) >> 4);\
+        }\
+\
+        dst += stride;\
+        s0 += stride;\
+        s1 += stride;\
+        s2 += stride;\
+        s3 += stride;\
+    }\
+}
+
+#define OP_PUT(dst, val) (dst) = (val)
+#define OP_AVG(dst, val) (dst) = (((dst) + (val) + 1)>>1)
+
+PIXOP_BILINEAR(put, OP_PUT, 8)
+PIXOP_BILINEAR(put, OP_PUT, 16)
+PIXOP_BILINEAR(put, OP_PUT, 32)
+PIXOP_BILINEAR(avg, OP_AVG, 8)
+PIXOP_BILINEAR(avg, OP_AVG, 16)
+PIXOP_BILINEAR(avg, OP_AVG, 32)
+
+#define op_scale1(x)  block[x] = av_clip_uint8( (block[x]*weight + (1<<(log2_denom-1))) >> log2_denom)
+#define op_scale2(x)  dst[x] = av_clip_uint8( (src[x]*weights + dst[x]*weightd + (1<<(log2_denom-1))) >> log2_denom)
+
+#define DIRAC_WEIGHT(W) \
+static void weight_dirac_pixels ## W ## _c(uint8_t *block, int stride, int log2_denom, \
+                                           int weight, int h) { \
+    int x; \
+    while (h--) { \
+        for (x = 0; x < W; x++) { \
+            op_scale1(x); \
+            op_scale1(x+1); \
+        } \
+        block += stride; \
+    } \
+} \
+static void biweight_dirac_pixels ## W ## _c(uint8_t *dst, uint8_t *src, int stride, int log2_denom, \
+                                             int weightd, int weights, int h) { \
+    int x; \
+    while (h--) { \
+        for (x = 0; x < W; x++) { \
+            op_scale2(x); \
+            op_scale2(x+1); \
+        } \
+        dst += stride; \
+        src += stride; \
+    } \
+}
+
+DIRAC_WEIGHT(8)
+DIRAC_WEIGHT(16)
+DIRAC_WEIGHT(32)
+
+#define ADD_OBMC(xblen) \
+static void add_obmc ## xblen ## _c(uint16_t *dst, const uint8_t *src, int stride, \
+                                    const uint8_t *obmc_weight, int yblen) \
+{ \
+    int x; \
+    while (yblen--) { \
+        for (x = 0; x < xblen; x += 2) { \
+            dst[x  ] += src[x  ] * obmc_weight[x  ]; \
+            dst[x+1] += src[x+1] * obmc_weight[x+1]; \
+        } \
+        dst += stride; \
+        src += stride; \
+        obmc_weight += 32; \
+    } \
+}
+
+ADD_OBMC(8)
+ADD_OBMC(16)
+ADD_OBMC(32)
+
+static void put_signed_rect_clamped_c(uint8_t *dst, int dst_stride, const int16_t *src, int src_stride, int width, int height)
+{
+    int x, y;
+    for (y = 0; y < height; y++) {
+        for (x = 0; x < width; x+=4) {
+            dst[x  ] = av_clip_uint8(src[x  ] + 128);
+            dst[x+1] = av_clip_uint8(src[x+1] + 128);
+            dst[x+2] = av_clip_uint8(src[x+2] + 128);
+            dst[x+3] = av_clip_uint8(src[x+3] + 128);
+        }
+        dst += dst_stride;
+        src += src_stride;
+    }
+}
+
+static void add_rect_clamped_c(uint8_t *dst, const uint16_t *src, int stride,
+                               const int16_t *idwt, int idwt_stride,
+                               int width, int height)
+{
+    int x, y;
+
+    for (y = 0; y < height; y++) {
+        for (x = 0; x < width; x+=2) {
+            dst[x  ] = av_clip_uint8(((src[x  ]+32)>>6) + idwt[x  ]);
+            dst[x+1] = av_clip_uint8(((src[x+1]+32)>>6) + idwt[x+1]);
+        }
+        dst += stride;
+        src += stride;
+        idwt += idwt_stride;
+    }
+}
+
+#define PIXFUNC(PFX, WIDTH) \
+    c->PFX ## _dirac_pixels_tab[WIDTH>>4][0] = ff_ ## PFX ## _dirac_pixels ## WIDTH ## _c; \
+    c->PFX ## _dirac_pixels_tab[WIDTH>>4][1] = ff_ ## PFX ## _dirac_pixels ## WIDTH ## _l2_c; \
+    c->PFX ## _dirac_pixels_tab[WIDTH>>4][2] = ff_ ## PFX ## _dirac_pixels ## WIDTH ## _l4_c; \
+    c->PFX ## _dirac_pixels_tab[WIDTH>>4][3] = ff_ ## PFX ## _dirac_pixels ## WIDTH ## _bilinear_c
+
+void ff_diracdsp_init(DiracDSPContext *c)
+{
+    c->dirac_hpel_filter = dirac_hpel_filter;
+    c->add_rect_clamped = add_rect_clamped_c;
+    c->put_signed_rect_clamped = put_signed_rect_clamped_c;
+
+    c->add_dirac_obmc[0] = add_obmc8_c;
+    c->add_dirac_obmc[1] = add_obmc16_c;
+    c->add_dirac_obmc[2] = add_obmc32_c;
+
+    c->weight_dirac_pixels_tab[0] = weight_dirac_pixels8_c;
+    c->weight_dirac_pixels_tab[1] = weight_dirac_pixels16_c;
+    c->weight_dirac_pixels_tab[2] = weight_dirac_pixels32_c;
+    c->biweight_dirac_pixels_tab[0] = biweight_dirac_pixels8_c;
+    c->biweight_dirac_pixels_tab[1] = biweight_dirac_pixels16_c;
+    c->biweight_dirac_pixels_tab[2] = biweight_dirac_pixels32_c;
+
+    PIXFUNC(put, 8);
+    PIXFUNC(put, 16);
+    PIXFUNC(put, 32);
+    PIXFUNC(avg, 8);
+    PIXFUNC(avg, 16);
+    PIXFUNC(avg, 32);
+
+    //MMX_DISABLE    if (HAVE_MMX) ff_diracdsp_init_mmx(c);
+}