lavc: split asv12 encoder/decoder

6 files changed, 778 insertions, 672 deletions

diff --git a/libavcodec/Makefile b/libavcodec/Makefile
index bd6567eb52..6aa13aff4f 100644
--- a/libavcodec/Makefile
+++ b/libavcodec/Makefile
@@ -99,10 +99,10 @@ OBJS-$(CONFIG_ANSI_DECODER)            += ansi.o cga_data.o
 OBJS-$(CONFIG_APE_DECODER)             += apedec.o
 OBJS-$(CONFIG_ASS_DECODER)             += assdec.o ass.o
 OBJS-$(CONFIG_ASS_ENCODER)             += assenc.o ass.o
-OBJS-$(CONFIG_ASV1_DECODER)            += asv1.o mpeg12data.o
-OBJS-$(CONFIG_ASV1_ENCODER)            += asv1.o mpeg12data.o
-OBJS-$(CONFIG_ASV2_DECODER)            += asv1.o mpeg12data.o
-OBJS-$(CONFIG_ASV2_ENCODER)            += asv1.o mpeg12data.o
+OBJS-$(CONFIG_ASV1_DECODER)            += asvdec.o asv.o mpeg12data.o
+OBJS-$(CONFIG_ASV1_ENCODER)            += asvenc.o asv.o mpeg12data.o
+OBJS-$(CONFIG_ASV2_DECODER)            += asvdec.o asv.o mpeg12data.o
+OBJS-$(CONFIG_ASV2_ENCODER)            += asvenc.o asv.o mpeg12data.o
 OBJS-$(CONFIG_ATRAC1_DECODER)          += atrac1.o atrac.o
 OBJS-$(CONFIG_ATRAC3_DECODER)          += atrac3.o atrac.o
 OBJS-$(CONFIG_AURA_DECODER)            += cyuv.o
diff --git a/libavcodec/asv.c b/libavcodec/asv.c
new file mode 100644
index 0000000000..b15182d78d
--- /dev/null
+++ b/libavcodec/asv.c
@@ -0,0 +1,95 @@
+/*
+ * Copyright (c) 2003 Michael Niedermayer
+ *
+ * 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
+ */
+
+/**
+ * @file
+ * ASUS V1/V2 encoder/decoder common data
+ */
+
+#include <stdint.h>
+
+#include "asv.h"
+#include "avcodec.h"
+#include "dsputil.h"
+
+const uint8_t ff_asv_scantab[64] = {
+    0x00,0x08,0x01,0x09,0x10,0x18,0x11,0x19,
+    0x02,0x0A,0x03,0x0B,0x12,0x1A,0x13,0x1B,
+    0x04,0x0C,0x05,0x0D,0x20,0x28,0x21,0x29,
+    0x06,0x0E,0x07,0x0F,0x14,0x1C,0x15,0x1D,
+    0x22,0x2A,0x23,0x2B,0x30,0x38,0x31,0x39,
+    0x16,0x1E,0x17,0x1F,0x24,0x2C,0x25,0x2D,
+    0x32,0x3A,0x33,0x3B,0x26,0x2E,0x27,0x2F,
+    0x34,0x3C,0x35,0x3D,0x36,0x3E,0x37,0x3F,
+};
+
+const uint8_t ff_asv_ccp_tab[17][2] = {
+    {0x2,2}, {0x7,5}, {0xB,5}, {0x3,5},
+    {0xD,5}, {0x5,5}, {0x9,5}, {0x1,5},
+    {0xE,5}, {0x6,5}, {0xA,5}, {0x2,5},
+    {0xC,5}, {0x4,5}, {0x8,5}, {0x3,2},
+    {0xF,5}, //EOB
+};
+
+const uint8_t ff_asv_level_tab[7][2] = {
+    {3,4}, {3,3}, {3,2}, {0,3}, {2,2}, {2,3}, {2,4}
+};
+
+const uint8_t ff_asv_dc_ccp_tab[8][2] = {
+    {0x1,2}, {0xD,4}, {0xF,4}, {0xC,4},
+    {0x5,3}, {0xE,4}, {0x4,3}, {0x0,2},
+};
+
+const uint8_t ff_asv_ac_ccp_tab[16][2] = {
+    {0x00,2}, {0x3B,6}, {0x0A,4}, {0x3A,6},
+    {0x02,3}, {0x39,6}, {0x3C,6}, {0x38,6},
+    {0x03,3}, {0x3D,6}, {0x08,4}, {0x1F,5},
+    {0x09,4}, {0x0B,4}, {0x0D,4}, {0x0C,4},
+};
+
+const uint8_t ff_asv2_level_tab[63][2] = {
+    {0x3F,10},{0x2F,10},{0x37,10},{0x27,10},{0x3B,10},{0x2B,10},{0x33,10},{0x23,10},
+    {0x3D,10},{0x2D,10},{0x35,10},{0x25,10},{0x39,10},{0x29,10},{0x31,10},{0x21,10},
+    {0x1F, 8},{0x17, 8},{0x1B, 8},{0x13, 8},{0x1D, 8},{0x15, 8},{0x19, 8},{0x11, 8},
+    {0x0F, 6},{0x0B, 6},{0x0D, 6},{0x09, 6},
+    {0x07, 4},{0x05, 4},
+    {0x03, 2},
+    {0x00, 5},
+    {0x02, 2},
+    {0x04, 4},{0x06, 4},
+    {0x08, 6},{0x0C, 6},{0x0A, 6},{0x0E, 6},
+    {0x10, 8},{0x18, 8},{0x14, 8},{0x1C, 8},{0x12, 8},{0x1A, 8},{0x16, 8},{0x1E, 8},
+    {0x20,10},{0x30,10},{0x28,10},{0x38,10},{0x24,10},{0x34,10},{0x2C,10},{0x3C,10},
+    {0x22,10},{0x32,10},{0x2A,10},{0x3A,10},{0x26,10},{0x36,10},{0x2E,10},{0x3E,10},
+};
+
+av_cold void ff_asv_common_init(AVCodecContext *avctx) {
+    ASV1Context * const a = avctx->priv_data;
+
+    ff_dsputil_init(&a->dsp, avctx);
+
+    a->mb_width   = (avctx->width  + 15) / 16;
+    a->mb_height  = (avctx->height + 15) / 16;
+    a->mb_width2  = (avctx->width  + 0) / 16;
+    a->mb_height2 = (avctx->height + 0) / 16;
+
+    avctx->coded_frame= &a->picture;
+    a->avctx= avctx;
+}
diff --git a/libavcodec/asv.h b/libavcodec/asv.h
new file mode 100644
index 0000000000..3440f93bc2
--- /dev/null
+++ b/libavcodec/asv.h
@@ -0,0 +1,67 @@
+/*
+ * Copyright (c) 2003 Michael Niedermayer
+ *
+ * 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
+ */
+
+/**
+ * @file
+ * ASUS V1/V2 encoder/decoder common data.
+ */
+
+#ifndef AVCODEC_ASV_H
+#define AVCODEC_ASV_H
+
+#include <stdint.h>
+
+#include "libavutil/attributes.h"
+#include "libavutil/mem.h"
+
+#include "avcodec.h"
+#include "dsputil.h"
+#include "get_bits.h"
+#include "put_bits.h"
+
+typedef struct ASV1Context{
+    AVCodecContext *avctx;
+    DSPContext dsp;
+    AVFrame picture;
+    PutBitContext pb;
+    GetBitContext gb;
+    ScanTable scantable;
+    int inv_qscale;
+    int mb_width;
+    int mb_height;
+    int mb_width2;
+    int mb_height2;
+    DECLARE_ALIGNED(16, DCTELEM, block)[6][64];
+    uint16_t intra_matrix[64];
+    int q_intra_matrix[64];
+    uint8_t *bitstream_buffer;
+    unsigned int bitstream_buffer_size;
+} ASV1Context;
+
+extern const uint8_t ff_asv_scantab[64];
+extern const uint8_t ff_asv_ccp_tab[17][2];
+extern const uint8_t ff_asv_level_tab[7][2];
+extern const uint8_t ff_asv_dc_ccp_tab[8][2];
+extern const uint8_t ff_asv_ac_ccp_tab[16][2];
+extern const uint8_t ff_asv2_level_tab[63][2];
+
+av_cold void ff_asv_common_init(AVCodecContext *avctx);
+
+#endif /* AVCODEC_ASV_H */
diff --git a/libavcodec/asv1.c b/libavcodec/asv1.c
deleted file mode 100644
index d10513dc46..0000000000
--- a/libavcodec/asv1.c
+++ /dev/null
@@ -1,668 +0,0 @@
-/*
- * ASUS V1/V2 codec
- * Copyright (c) 2003 Michael Niedermayer
- *
- * 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
- */
-
-/**
- * @file
- * ASUS V1/V2 codec.
- */
-
-#include "avcodec.h"
-#include "libavutil/common.h"
-#include "put_bits.h"
-#include "dsputil.h"
-#include "mpeg12data.h"
-
-//#undef NDEBUG
-//#include <assert.h>
-
-#define VLC_BITS 6
-#define ASV2_LEVEL_VLC_BITS 10
-
-typedef struct ASV1Context{
-    AVCodecContext *avctx;
-    DSPContext dsp;
-    AVFrame picture;
-    PutBitContext pb;
-    GetBitContext gb;
-    ScanTable scantable;
-    int inv_qscale;
-    int mb_width;
-    int mb_height;
-    int mb_width2;
-    int mb_height2;
-    DECLARE_ALIGNED(16, DCTELEM, block)[6][64];
-    uint16_t intra_matrix[64];
-    int q_intra_matrix[64];
-    uint8_t *bitstream_buffer;
-    unsigned int bitstream_buffer_size;
-} ASV1Context;
-
-static const uint8_t scantab[64]={
-    0x00,0x08,0x01,0x09,0x10,0x18,0x11,0x19,
-    0x02,0x0A,0x03,0x0B,0x12,0x1A,0x13,0x1B,
-    0x04,0x0C,0x05,0x0D,0x20,0x28,0x21,0x29,
-    0x06,0x0E,0x07,0x0F,0x14,0x1C,0x15,0x1D,
-    0x22,0x2A,0x23,0x2B,0x30,0x38,0x31,0x39,
-    0x16,0x1E,0x17,0x1F,0x24,0x2C,0x25,0x2D,
-    0x32,0x3A,0x33,0x3B,0x26,0x2E,0x27,0x2F,
-    0x34,0x3C,0x35,0x3D,0x36,0x3E,0x37,0x3F,
-};
-
-
-static const uint8_t ccp_tab[17][2]={
-    {0x2,2}, {0x7,5}, {0xB,5}, {0x3,5},
-    {0xD,5}, {0x5,5}, {0x9,5}, {0x1,5},
-    {0xE,5}, {0x6,5}, {0xA,5}, {0x2,5},
-    {0xC,5}, {0x4,5}, {0x8,5}, {0x3,2},
-    {0xF,5}, //EOB
-};
-
-static const uint8_t level_tab[7][2]={
-    {3,4}, {3,3}, {3,2}, {0,3}, {2,2}, {2,3}, {2,4}
-};
-
-static const uint8_t dc_ccp_tab[8][2]={
-    {0x1,2}, {0xD,4}, {0xF,4}, {0xC,4},
-    {0x5,3}, {0xE,4}, {0x4,3}, {0x0,2},
-};
-
-static const uint8_t ac_ccp_tab[16][2]={
-    {0x00,2}, {0x3B,6}, {0x0A,4}, {0x3A,6},
-    {0x02,3}, {0x39,6}, {0x3C,6}, {0x38,6},
-    {0x03,3}, {0x3D,6}, {0x08,4}, {0x1F,5},
-    {0x09,4}, {0x0B,4}, {0x0D,4}, {0x0C,4},
-};
-
-static const uint8_t asv2_level_tab[63][2]={
-    {0x3F,10},{0x2F,10},{0x37,10},{0x27,10},{0x3B,10},{0x2B,10},{0x33,10},{0x23,10},
-    {0x3D,10},{0x2D,10},{0x35,10},{0x25,10},{0x39,10},{0x29,10},{0x31,10},{0x21,10},
-    {0x1F, 8},{0x17, 8},{0x1B, 8},{0x13, 8},{0x1D, 8},{0x15, 8},{0x19, 8},{0x11, 8},
-    {0x0F, 6},{0x0B, 6},{0x0D, 6},{0x09, 6},
-    {0x07, 4},{0x05, 4},
-    {0x03, 2},
-    {0x00, 5},
-    {0x02, 2},
-    {0x04, 4},{0x06, 4},
-    {0x08, 6},{0x0C, 6},{0x0A, 6},{0x0E, 6},
-    {0x10, 8},{0x18, 8},{0x14, 8},{0x1C, 8},{0x12, 8},{0x1A, 8},{0x16, 8},{0x1E, 8},
-    {0x20,10},{0x30,10},{0x28,10},{0x38,10},{0x24,10},{0x34,10},{0x2C,10},{0x3C,10},
-    {0x22,10},{0x32,10},{0x2A,10},{0x3A,10},{0x26,10},{0x36,10},{0x2E,10},{0x3E,10},
-};
-
-
-static VLC ccp_vlc;
-static VLC level_vlc;
-static VLC dc_ccp_vlc;
-static VLC ac_ccp_vlc;
-static VLC asv2_level_vlc;
-
-static av_cold void init_vlcs(ASV1Context *a){
-    static int done = 0;
-
-    if (!done) {
-        done = 1;
-
-        INIT_VLC_STATIC(&ccp_vlc, VLC_BITS, 17,
-                 &ccp_tab[0][1], 2, 1,
-                 &ccp_tab[0][0], 2, 1, 64);
-        INIT_VLC_STATIC(&dc_ccp_vlc, VLC_BITS, 8,
-                 &dc_ccp_tab[0][1], 2, 1,
-                 &dc_ccp_tab[0][0], 2, 1, 64);
-        INIT_VLC_STATIC(&ac_ccp_vlc, VLC_BITS, 16,
-                 &ac_ccp_tab[0][1], 2, 1,
-                 &ac_ccp_tab[0][0], 2, 1, 64);
-        INIT_VLC_STATIC(&level_vlc,  VLC_BITS, 7,
-                 &level_tab[0][1], 2, 1,
-                 &level_tab[0][0], 2, 1, 64);
-        INIT_VLC_STATIC(&asv2_level_vlc, ASV2_LEVEL_VLC_BITS, 63,
-                 &asv2_level_tab[0][1], 2, 1,
-                 &asv2_level_tab[0][0], 2, 1, 1024);
-    }
-}
-
-//FIXME write a reversed bitstream reader to avoid the double reverse
-static inline int asv2_get_bits(GetBitContext *gb, int n){
-    return av_reverse[ get_bits(gb, n) << (8-n) ];
-}
-
-static inline void asv2_put_bits(PutBitContext *pb, int n, int v){
-    put_bits(pb, n, av_reverse[ v << (8-n) ]);
-}
-
-static inline int asv1_get_level(GetBitContext *gb){
-    int code= get_vlc2(gb, level_vlc.table, VLC_BITS, 1);
-
-    if(code==3) return get_sbits(gb, 8);
-    else        return code - 3;
-}
-
-static inline int asv2_get_level(GetBitContext *gb){
-    int code= get_vlc2(gb, asv2_level_vlc.table, ASV2_LEVEL_VLC_BITS, 1);
-
-    if(code==31) return (int8_t)asv2_get_bits(gb, 8);
-    else         return code - 31;
-}
-
-static inline void asv1_put_level(PutBitContext *pb, int level){
-    unsigned int index= level + 3;
-
-    if(index <= 6) put_bits(pb, level_tab[index][1], level_tab[index][0]);
-    else{
-        put_bits(pb, level_tab[3][1], level_tab[3][0]);
-        put_sbits(pb, 8, level);
-    }
-}
-
-static inline void asv2_put_level(PutBitContext *pb, int level){
-    unsigned int index= level + 31;
-
-    if(index <= 62) put_bits(pb, asv2_level_tab[index][1], asv2_level_tab[index][0]);
-    else{
-        put_bits(pb, asv2_level_tab[31][1], asv2_level_tab[31][0]);
-        asv2_put_bits(pb, 8, level&0xFF);
-    }
-}
-
-static inline int asv1_decode_block(ASV1Context *a, DCTELEM block[64]){
-    int i;
-
-    block[0]= 8*get_bits(&a->gb, 8);
-
-    for(i=0; i<11; i++){
-        const int ccp= get_vlc2(&a->gb, ccp_vlc.table, VLC_BITS, 1);
-
-        if(ccp){
-            if(ccp == 16) break;
-            if(ccp < 0 || i>=10){
-                av_log(a->avctx, AV_LOG_ERROR, "coded coeff pattern damaged\n");
-                return -1;
-            }
-
-            if(ccp&8) block[a->scantable.permutated[4*i+0]]= (asv1_get_level(&a->gb) * a->intra_matrix[4*i+0])>>4;
-            if(ccp&4) block[a->scantable.permutated[4*i+1]]= (asv1_get_level(&a->gb) * a->intra_matrix[4*i+1])>>4;
-            if(ccp&2) block[a->scantable.permutated[4*i+2]]= (asv1_get_level(&a->gb) * a->intra_matrix[4*i+2])>>4;
-            if(ccp&1) block[a->scantable.permutated[4*i+3]]= (asv1_get_level(&a->gb) * a->intra_matrix[4*i+3])>>4;
-        }
-    }
-
-    return 0;
-}
-
-static inline int asv2_decode_block(ASV1Context *a, DCTELEM block[64]){
-    int i, count, ccp;
-
-    count= asv2_get_bits(&a->gb, 4);
-
-    block[0]= 8*asv2_get_bits(&a->gb, 8);
-
-    ccp= get_vlc2(&a->gb, dc_ccp_vlc.table, VLC_BITS, 1);
-    if(ccp){
-        if(ccp&4) block[a->scantable.permutated[1]]= (asv2_get_level(&a->gb) * a->intra_matrix[1])>>4;
-        if(ccp&2) block[a->scantable.permutated[2]]= (asv2_get_level(&a->gb) * a->intra_matrix[2])>>4;
-        if(ccp&1) block[a->scantable.permutated[3]]= (asv2_get_level(&a->gb) * a->intra_matrix[3])>>4;
-    }
-
-    for(i=1; i<count+1; i++){
-        const int ccp= get_vlc2(&a->gb, ac_ccp_vlc.table, VLC_BITS, 1);
-
-        if(ccp){
-            if(ccp&8) block[a->scantable.permutated[4*i+0]]= (asv2_get_level(&a->gb) * a->intra_matrix[4*i+0])>>4;
-            if(ccp&4) block[a->scantable.permutated[4*i+1]]= (asv2_get_level(&a->gb) * a->intra_matrix[4*i+1])>>4;
-            if(ccp&2) block[a->scantable.permutated[4*i+2]]= (asv2_get_level(&a->gb) * a->intra_matrix[4*i+2])>>4;
-            if(ccp&1) block[a->scantable.permutated[4*i+3]]= (asv2_get_level(&a->gb) * a->intra_matrix[4*i+3])>>4;
-        }
-    }
-
-    return 0;
-}
-
-static inline void asv1_encode_block(ASV1Context *a, DCTELEM block[64]){
-    int i;
-    int nc_count=0;
-
-    put_bits(&a->pb, 8, (block[0] + 32)>>6);
-    block[0]= 0;
-
-    for(i=0; i<10; i++){
-        const int index= scantab[4*i];
-        int ccp=0;
-
-        if( (block[index + 0] = (block[index + 0]*a->q_intra_matrix[index + 0] + (1<<15))>>16) ) ccp |= 8;
-        if( (block[index + 8] = (block[index + 8]*a->q_intra_matrix[index + 8] + (1<<15))>>16) ) ccp |= 4;
-        if( (block[index + 1] = (block[index + 1]*a->q_intra_matrix[index + 1] + (1<<15))>>16) ) ccp |= 2;
-        if( (block[index + 9] = (block[index + 9]*a->q_intra_matrix[index + 9] + (1<<15))>>16) ) ccp |= 1;
-
-        if(ccp){
-            for(;nc_count; nc_count--)
-                put_bits(&a->pb, ccp_tab[0][1], ccp_tab[0][0]);
-
-            put_bits(&a->pb, ccp_tab[ccp][1], ccp_tab[ccp][0]);
-
-            if(ccp&8) asv1_put_level(&a->pb, block[index + 0]);
-            if(ccp&4) asv1_put_level(&a->pb, block[index + 8]);
-            if(ccp&2) asv1_put_level(&a->pb, block[index + 1]);
-            if(ccp&1) asv1_put_level(&a->pb, block[index + 9]);
-        }else{
-            nc_count++;
-        }
-    }
-    put_bits(&a->pb, ccp_tab[16][1], ccp_tab[16][0]);
-}
-
-static inline void asv2_encode_block(ASV1Context *a, DCTELEM block[64]){
-    int i;
-    int count=0;
-
-    for(count=63; count>3; count--){
-        const int index= scantab[count];
-
-        if( (block[index]*a->q_intra_matrix[index] + (1<<15))>>16 )
-            break;
-    }
-
-    count >>= 2;
-
-    asv2_put_bits(&a->pb, 4, count);
-    asv2_put_bits(&a->pb, 8, (block[0] + 32)>>6);
-    block[0]= 0;
-
-    for(i=0; i<=count; i++){
-        const int index= scantab[4*i];
-        int ccp=0;
-
-        if( (block[index + 0] = (block[index + 0]*a->q_intra_matrix[index + 0] + (1<<15))>>16) ) ccp |= 8;
-        if( (block[index + 8] = (block[index + 8]*a->q_intra_matrix[index + 8] + (1<<15))>>16) ) ccp |= 4;
-        if( (block[index + 1] = (block[index + 1]*a->q_intra_matrix[index + 1] + (1<<15))>>16) ) ccp |= 2;
-        if( (block[index + 9] = (block[index + 9]*a->q_intra_matrix[index + 9] + (1<<15))>>16) ) ccp |= 1;
-
-        assert(i || ccp<8);
-        if(i) put_bits(&a->pb, ac_ccp_tab[ccp][1], ac_ccp_tab[ccp][0]);
-        else  put_bits(&a->pb, dc_ccp_tab[ccp][1], dc_ccp_tab[ccp][0]);
-
-        if(ccp){
-            if(ccp&8) asv2_put_level(&a->pb, block[index + 0]);
-            if(ccp&4) asv2_put_level(&a->pb, block[index + 8]);
-            if(ccp&2) asv2_put_level(&a->pb, block[index + 1]);
-            if(ccp&1) asv2_put_level(&a->pb, block[index + 9]);
-        }
-    }
-}
-
-static inline int decode_mb(ASV1Context *a, DCTELEM block[6][64]){
-    int i;
-
-    a->dsp.clear_blocks(block[0]);
-
-    if(a->avctx->codec_id == AV_CODEC_ID_ASV1){
-        for(i=0; i<6; i++){
-            if( asv1_decode_block(a, block[i]) < 0)
-                return -1;
-        }
-    }else{
-        for(i=0; i<6; i++){
-            if( asv2_decode_block(a, block[i]) < 0)
-                return -1;
-        }
-    }
-    return 0;
-}
-
-#define MAX_MB_SIZE (30*16*16*3/2/8)
-
-static inline int encode_mb(ASV1Context *a, DCTELEM block[6][64]){
-    int i;
-
-    if (a->pb.buf_end - a->pb.buf - (put_bits_count(&a->pb)>>3) < MAX_MB_SIZE) {
-        av_log(a->avctx, AV_LOG_ERROR, "encoded frame too large\n");
-        return -1;
-    }
-
-    if(a->avctx->codec_id == AV_CODEC_ID_ASV1){
-        for(i=0; i<6; i++)
-            asv1_encode_block(a, block[i]);
-    }else{
-        for(i=0; i<6; i++)
-            asv2_encode_block(a, block[i]);
-    }
-    return 0;
-}
-
-static inline void idct_put(ASV1Context *a, int mb_x, int mb_y){
-    DCTELEM (*block)[64]= a->block;
-    int linesize= a->picture.linesize[0];
-
-    uint8_t *dest_y  = a->picture.data[0] + (mb_y * 16* linesize              ) + mb_x * 16;
-    uint8_t *dest_cb = a->picture.data[1] + (mb_y * 8 * a->picture.linesize[1]) + mb_x * 8;
-    uint8_t *dest_cr = a->picture.data[2] + (mb_y * 8 * a->picture.linesize[2]) + mb_x * 8;
-
-    a->dsp.idct_put(dest_y                 , linesize, block[0]);
-    a->dsp.idct_put(dest_y              + 8, linesize, block[1]);
-    a->dsp.idct_put(dest_y + 8*linesize    , linesize, block[2]);
-    a->dsp.idct_put(dest_y + 8*linesize + 8, linesize, block[3]);
-
-    if(!(a->avctx->flags&CODEC_FLAG_GRAY)){
-        a->dsp.idct_put(dest_cb, a->picture.linesize[1], block[4]);
-        a->dsp.idct_put(dest_cr, a->picture.linesize[2], block[5]);
-    }
-}
-
-static inline void dct_get(ASV1Context *a, int mb_x, int mb_y){
-    DCTELEM (*block)[64]= a->block;
-    int linesize= a->picture.linesize[0];
-    int i;
-
-    uint8_t *ptr_y  = a->picture.data[0] + (mb_y * 16* linesize              ) + mb_x * 16;
-    uint8_t *ptr_cb = a->picture.data[1] + (mb_y * 8 * a->picture.linesize[1]) + mb_x * 8;
-    uint8_t *ptr_cr = a->picture.data[2] + (mb_y * 8 * a->picture.linesize[2]) + mb_x * 8;
-
-    a->dsp.get_pixels(block[0], ptr_y                 , linesize);
-    a->dsp.get_pixels(block[1], ptr_y              + 8, linesize);
-    a->dsp.get_pixels(block[2], ptr_y + 8*linesize    , linesize);
-    a->dsp.get_pixels(block[3], ptr_y + 8*linesize + 8, linesize);
-    for(i=0; i<4; i++)
-        a->dsp.fdct(block[i]);
-
-    if(!(a->avctx->flags&CODEC_FLAG_GRAY)){
-        a->dsp.get_pixels(block[4], ptr_cb, a->picture.linesize[1]);
-        a->dsp.get_pixels(block[5], ptr_cr, a->picture.linesize[2]);
-        for(i=4; i<6; i++)
-            a->dsp.fdct(block[i]);
-    }
-}
-
-static int decode_frame(AVCodecContext *avctx,
-                        void *data, int *data_size,
-                        AVPacket *avpkt)
-{
-    const uint8_t *buf = avpkt->data;
-    int buf_size = avpkt->size;
-    ASV1Context * const a = avctx->priv_data;
-    AVFrame *picture = data;
-    AVFrame * const p= &a->picture;
-    int mb_x, mb_y;
-
-    if(p->data[0])
-        avctx->release_buffer(avctx, p);
-
-    p->reference= 0;
-    if(avctx->get_buffer(avctx, p) < 0){
-        av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
-        return -1;
-    }
-    p->pict_type= AV_PICTURE_TYPE_I;
-    p->key_frame= 1;
-
-    av_fast_padded_malloc(&a->bitstream_buffer, &a->bitstream_buffer_size,
-                          buf_size);
-    if (!a->bitstream_buffer)
-        return AVERROR(ENOMEM);
-
-    if(avctx->codec_id == AV_CODEC_ID_ASV1)
-        a->dsp.bswap_buf((uint32_t*)a->bitstream_buffer, (const uint32_t*)buf, buf_size/4);
-    else{
-        int i;
-        for(i=0; i<buf_size; i++)
-            a->bitstream_buffer[i]= av_reverse[ buf[i] ];
-    }
-
-    init_get_bits(&a->gb, a->bitstream_buffer, buf_size*8);
-
-    for(mb_y=0; mb_y<a->mb_height2; mb_y++){
-        for(mb_x=0; mb_x<a->mb_width2; mb_x++){
-            if( decode_mb(a, a->block) <0)
-                return -1;
-
-            idct_put(a, mb_x, mb_y);
-        }
-    }
-
-    if(a->mb_width2 != a->mb_width){
-        mb_x= a->mb_width2;
-        for(mb_y=0; mb_y<a->mb_height2; mb_y++){
-            if( decode_mb(a, a->block) <0)
-                return -1;
-
-            idct_put(a, mb_x, mb_y);
-        }
-    }
-
-    if(a->mb_height2 != a->mb_height){
-        mb_y= a->mb_height2;
-        for(mb_x=0; mb_x<a->mb_width; mb_x++){
-            if( decode_mb(a, a->block) <0)
-                return -1;
-
-            idct_put(a, mb_x, mb_y);
-        }
-    }
-
-    *picture   = a->picture;
-    *data_size = sizeof(AVPicture);
-
-    emms_c();
-
-    return (get_bits_count(&a->gb)+31)/32*4;
-}
-
-#if CONFIG_ASV1_ENCODER || CONFIG_ASV2_ENCODER
-static int encode_frame(AVCodecContext *avctx, AVPacket *pkt,
-                        const AVFrame *pict, int *got_packet)
-{
-    ASV1Context * const a = avctx->priv_data;
-    AVFrame * const p= &a->picture;
-    int size, ret;
-    int mb_x, mb_y;
-
-    if (!pkt->data &&
-        (ret = av_new_packet(pkt, a->mb_height*a->mb_width*MAX_MB_SIZE +
-                                  FF_MIN_BUFFER_SIZE)) < 0) {
-        av_log(avctx, AV_LOG_ERROR, "Error getting output packet.\n");
-        return ret;
-    }
-
-    init_put_bits(&a->pb, pkt->data, pkt->size);
-
-    *p = *pict;
-    p->pict_type= AV_PICTURE_TYPE_I;
-    p->key_frame= 1;
-
-    for(mb_y=0; mb_y<a->mb_height2; mb_y++){
-        for(mb_x=0; mb_x<a->mb_width2; mb_x++){
-            dct_get(a, mb_x, mb_y);
-            encode_mb(a, a->block);
-        }
-    }
-
-    if(a->mb_width2 != a->mb_width){
-        mb_x= a->mb_width2;
-        for(mb_y=0; mb_y<a->mb_height2; mb_y++){
-            dct_get(a, mb_x, mb_y);
-            encode_mb(a, a->block);
-        }
-    }
-
-    if(a->mb_height2 != a->mb_height){
-        mb_y= a->mb_height2;
-        for(mb_x=0; mb_x<a->mb_width; mb_x++){
-            dct_get(a, mb_x, mb_y);
-            encode_mb(a, a->block);
-        }
-    }
-    emms_c();
-
-    avpriv_align_put_bits(&a->pb);
-    while(put_bits_count(&a->pb)&31)
-        put_bits(&a->pb, 8, 0);
-
-    size= put_bits_count(&a->pb)/32;
-
-    if(avctx->codec_id == AV_CODEC_ID_ASV1)
-        a->dsp.bswap_buf((uint32_t*)pkt->data, (uint32_t*)pkt->data, size);
-    else{
-        int i;
-        for(i=0; i<4*size; i++)
-            pkt->data[i] = av_reverse[pkt->data[i]];
-    }
-
-    pkt->size   = size*4;
-    pkt->flags |= AV_PKT_FLAG_KEY;
-    *got_packet = 1;
-
-    return 0;
-}
-#endif /* CONFIG_ASV1_ENCODER || CONFIG_ASV2_ENCODER */
-
-static av_cold void common_init(AVCodecContext *avctx){
-    ASV1Context * const a = avctx->priv_data;
-
-    ff_dsputil_init(&a->dsp, avctx);
-
-    a->mb_width   = (avctx->width  + 15) / 16;
-    a->mb_height  = (avctx->height + 15) / 16;
-    a->mb_width2  = (avctx->width  + 0) / 16;
-    a->mb_height2 = (avctx->height + 0) / 16;
-
-    avctx->coded_frame= &a->picture;
-    a->avctx= avctx;
-}
-
-static av_cold int decode_init(AVCodecContext *avctx){
-    ASV1Context * const a = avctx->priv_data;
-    AVFrame *p= &a->picture;
-    int i;
-    const int scale= avctx->codec_id == AV_CODEC_ID_ASV1 ? 1 : 2;
-
-    common_init(avctx);
-    init_vlcs(a);
-    ff_init_scantable(a->dsp.idct_permutation, &a->scantable, scantab);
-    avctx->pix_fmt= AV_PIX_FMT_YUV420P;
-
-    a->inv_qscale= avctx->extradata[0];
-    if(a->inv_qscale == 0){
-        av_log(avctx, AV_LOG_ERROR, "illegal qscale 0\n");
-        if(avctx->codec_id == AV_CODEC_ID_ASV1)
-            a->inv_qscale= 6;
-        else
-            a->inv_qscale= 10;
-    }
-
-    for(i=0; i<64; i++){
-        int index= scantab[i];
-
-        a->intra_matrix[i]= 64*scale*ff_mpeg1_default_intra_matrix[index] / a->inv_qscale;
-    }
-
-    p->qstride= a->mb_width;
-    p->qscale_table= av_malloc( p->qstride * a->mb_height);
-    p->quality= (32*scale + a->inv_qscale/2)/a->inv_qscale;
-    memset(p->qscale_table, p->quality, p->qstride*a->mb_height);
-
-    return 0;
-}
-
-#if CONFIG_ASV1_ENCODER || CONFIG_ASV2_ENCODER
-static av_cold int encode_init(AVCodecContext *avctx){
-    ASV1Context * const a = avctx->priv_data;
-    int i;
-    const int scale= avctx->codec_id == AV_CODEC_ID_ASV1 ? 1 : 2;
-
-    common_init(avctx);
-
-    if(avctx->global_quality == 0) avctx->global_quality= 4*FF_QUALITY_SCALE;
-
-    a->inv_qscale= (32*scale*FF_QUALITY_SCALE +  avctx->global_quality/2) / avctx->global_quality;
-
-    avctx->extradata= av_mallocz(8);
-    avctx->extradata_size=8;
-    ((uint32_t*)avctx->extradata)[0]= av_le2ne32(a->inv_qscale);
-    ((uint32_t*)avctx->extradata)[1]= av_le2ne32(AV_RL32("ASUS"));
-
-    for(i=0; i<64; i++){
-        int q= 32*scale*ff_mpeg1_default_intra_matrix[i];
-        a->q_intra_matrix[i]= ((a->inv_qscale<<16) + q/2) / q;
-    }
-
-    return 0;
-}
-#endif /* CONFIG_ASV1_ENCODER || CONFIG_ASV2_ENCODER */
-
-static av_cold int decode_end(AVCodecContext *avctx){
-    ASV1Context * const a = avctx->priv_data;
-
-    av_freep(&a->bitstream_buffer);
-    av_freep(&a->picture.qscale_table);
-    a->bitstream_buffer_size=0;
-
-    if(a->picture.data[0])
-        avctx->release_buffer(avctx, &a->picture);
-
-    return 0;
-}
-
-AVCodec ff_asv1_decoder = {
-    .name           = "asv1",
-    .type           = AVMEDIA_TYPE_VIDEO,
-    .id             = AV_CODEC_ID_ASV1,
-    .priv_data_size = sizeof(ASV1Context),
-    .init           = decode_init,
-    .close          = decode_end,
-    .decode         = decode_frame,
-    .capabilities   = CODEC_CAP_DR1,
-    .long_name      = NULL_IF_CONFIG_SMALL("ASUS V1"),
-};
-
-AVCodec ff_asv2_decoder = {
-    .name           = "asv2",
-    .type           = AVMEDIA_TYPE_VIDEO,
-    .id             = AV_CODEC_ID_ASV2,
-    .priv_data_size = sizeof(ASV1Context),
-    .init           = decode_init,
-    .close          = decode_end,
-    .decode         = decode_frame,
-    .capabilities   = CODEC_CAP_DR1,
-    .long_name      = NULL_IF_CONFIG_SMALL("ASUS V2"),
-};
-
-#if CONFIG_ASV1_ENCODER
-AVCodec ff_asv1_encoder = {
-    .name           = "asv1",
-    .type           = AVMEDIA_TYPE_VIDEO,
-    .id             = AV_CODEC_ID_ASV1,
-    .priv_data_size = sizeof(ASV1Context),
-    .init           = encode_init,
-    .encode2        = encode_frame,
-    .pix_fmts       = (const enum AVPixelFormat[]){ AV_PIX_FMT_YUV420P, AV_PIX_FMT_NONE },
-    .long_name      = NULL_IF_CONFIG_SMALL("ASUS V1"),
-};
-#endif
-
-#if CONFIG_ASV2_ENCODER
-AVCodec ff_asv2_encoder = {
-    .name           = "asv2",
-    .type           = AVMEDIA_TYPE_VIDEO,
-    .id             = AV_CODEC_ID_ASV2,
-    .priv_data_size = sizeof(ASV1Context),
-    .init           = encode_init,
-    .encode2        = encode_frame,
-    .pix_fmts       = (const enum AVPixelFormat[]){ AV_PIX_FMT_YUV420P, AV_PIX_FMT_NONE },
-    .long_name      = NULL_IF_CONFIG_SMALL("ASUS V2"),
-};
-#endif
diff --git a/libavcodec/asvdec.c b/libavcodec/asvdec.c
new file mode 100644
index 0000000000..ceb8f636a6
--- /dev/null
+++ b/libavcodec/asvdec.c
@@ -0,0 +1,325 @@
+/*
+ * Copyright (c) 2003 Michael Niedermayer
+ *
+ * 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
+ */
+
+/**
+ * @file
+ * ASUS V1/V2 decoder.
+ */
+
+#include "libavutil/common.h"
+#include "libavutil/mem.h"
+
+#include "asv.h"
+#include "avcodec.h"
+#include "put_bits.h"
+#include "dsputil.h"
+#include "mpeg12data.h"
+
+//#undef NDEBUG
+//#include <assert.h>
+
+#define VLC_BITS 6
+#define ASV2_LEVEL_VLC_BITS 10
+
+static VLC ccp_vlc;
+static VLC level_vlc;
+static VLC dc_ccp_vlc;
+static VLC ac_ccp_vlc;
+static VLC asv2_level_vlc;
+
+static av_cold void init_vlcs(ASV1Context *a){
+    static int done = 0;
+
+    if (!done) {
+        done = 1;
+
+        INIT_VLC_STATIC(&ccp_vlc, VLC_BITS, 17,
+                 &ff_asv_ccp_tab[0][1], 2, 1,
+                 &ff_asv_ccp_tab[0][0], 2, 1, 64);
+        INIT_VLC_STATIC(&dc_ccp_vlc, VLC_BITS, 8,
+                 &ff_asv_dc_ccp_tab[0][1], 2, 1,
+                 &ff_asv_dc_ccp_tab[0][0], 2, 1, 64);
+        INIT_VLC_STATIC(&ac_ccp_vlc, VLC_BITS, 16,
+                 &ff_asv_ac_ccp_tab[0][1], 2, 1,
+                 &ff_asv_ac_ccp_tab[0][0], 2, 1, 64);
+        INIT_VLC_STATIC(&level_vlc,  VLC_BITS, 7,
+                 &ff_asv_level_tab[0][1], 2, 1,
+                 &ff_asv_level_tab[0][0], 2, 1, 64);
+        INIT_VLC_STATIC(&asv2_level_vlc, ASV2_LEVEL_VLC_BITS, 63,
+                 &ff_asv2_level_tab[0][1], 2, 1,
+                 &ff_asv2_level_tab[0][0], 2, 1, 1024);
+    }
+}
+
+//FIXME write a reversed bitstream reader to avoid the double reverse
+static inline int asv2_get_bits(GetBitContext *gb, int n){
+    return av_reverse[ get_bits(gb, n) << (8-n) ];
+}
+
+static inline int asv1_get_level(GetBitContext *gb){
+    int code= get_vlc2(gb, level_vlc.table, VLC_BITS, 1);
+
+    if(code==3) return get_sbits(gb, 8);
+    else        return code - 3;
+}
+
+static inline int asv2_get_level(GetBitContext *gb){
+    int code= get_vlc2(gb, asv2_level_vlc.table, ASV2_LEVEL_VLC_BITS, 1);
+
+    if(code==31) return (int8_t)asv2_get_bits(gb, 8);
+    else         return code - 31;
+}
+
+static inline int asv1_decode_block(ASV1Context *a, DCTELEM block[64]){
+    int i;
+
+    block[0]= 8*get_bits(&a->gb, 8);
+
+    for(i=0; i<11; i++){
+        const int ccp= get_vlc2(&a->gb, ccp_vlc.table, VLC_BITS, 1);
+
+        if(ccp){
+            if(ccp == 16) break;
+            if(ccp < 0 || i>=10){
+                av_log(a->avctx, AV_LOG_ERROR, "coded coeff pattern damaged\n");
+                return -1;
+            }
+
+            if(ccp&8) block[a->scantable.permutated[4*i+0]]= (asv1_get_level(&a->gb) * a->intra_matrix[4*i+0])>>4;
+            if(ccp&4) block[a->scantable.permutated[4*i+1]]= (asv1_get_level(&a->gb) * a->intra_matrix[4*i+1])>>4;
+            if(ccp&2) block[a->scantable.permutated[4*i+2]]= (asv1_get_level(&a->gb) * a->intra_matrix[4*i+2])>>4;
+            if(ccp&1) block[a->scantable.permutated[4*i+3]]= (asv1_get_level(&a->gb) * a->intra_matrix[4*i+3])>>4;
+        }
+    }
+
+    return 0;
+}
+
+static inline int asv2_decode_block(ASV1Context *a, DCTELEM block[64]){
+    int i, count, ccp;
+
+    count= asv2_get_bits(&a->gb, 4);
+
+    block[0]= 8*asv2_get_bits(&a->gb, 8);
+
+    ccp= get_vlc2(&a->gb, dc_ccp_vlc.table, VLC_BITS, 1);
+    if(ccp){
+        if(ccp&4) block[a->scantable.permutated[1]]= (asv2_get_level(&a->gb) * a->intra_matrix[1])>>4;
+        if(ccp&2) block[a->scantable.permutated[2]]= (asv2_get_level(&a->gb) * a->intra_matrix[2])>>4;
+        if(ccp&1) block[a->scantable.permutated[3]]= (asv2_get_level(&a->gb) * a->intra_matrix[3])>>4;
+    }
+
+    for(i=1; i<count+1; i++){
+        const int ccp= get_vlc2(&a->gb, ac_ccp_vlc.table, VLC_BITS, 1);
+
+        if(ccp){
+            if(ccp&8) block[a->scantable.permutated[4*i+0]]= (asv2_get_level(&a->gb) * a->intra_matrix[4*i+0])>>4;
+            if(ccp&4) block[a->scantable.permutated[4*i+1]]= (asv2_get_level(&a->gb) * a->intra_matrix[4*i+1])>>4;
+            if(ccp&2) block[a->scantable.permutated[4*i+2]]= (asv2_get_level(&a->gb) * a->intra_matrix[4*i+2])>>4;
+            if(ccp&1) block[a->scantable.permutated[4*i+3]]= (asv2_get_level(&a->gb) * a->intra_matrix[4*i+3])>>4;
+        }
+    }
+
+    return 0;
+}
+
+static inline int decode_mb(ASV1Context *a, DCTELEM block[6][64]){
+    int i;
+
+    a->dsp.clear_blocks(block[0]);
+
+    if(a->avctx->codec_id == AV_CODEC_ID_ASV1){
+        for(i=0; i<6; i++){
+            if( asv1_decode_block(a, block[i]) < 0)
+                return -1;
+        }
+    }else{
+        for(i=0; i<6; i++){
+            if( asv2_decode_block(a, block[i]) < 0)
+                return -1;
+        }
+    }
+    return 0;
+}
+
+static inline void idct_put(ASV1Context *a, int mb_x, int mb_y){
+    DCTELEM (*block)[64]= a->block;
+    int linesize= a->picture.linesize[0];
+
+    uint8_t *dest_y  = a->picture.data[0] + (mb_y * 16* linesize              ) + mb_x * 16;
+    uint8_t *dest_cb = a->picture.data[1] + (mb_y * 8 * a->picture.linesize[1]) + mb_x * 8;
+    uint8_t *dest_cr = a->picture.data[2] + (mb_y * 8 * a->picture.linesize[2]) + mb_x * 8;
+
+    a->dsp.idct_put(dest_y                 , linesize, block[0]);
+    a->dsp.idct_put(dest_y              + 8, linesize, block[1]);
+    a->dsp.idct_put(dest_y + 8*linesize    , linesize, block[2]);
+    a->dsp.idct_put(dest_y + 8*linesize + 8, linesize, block[3]);
+
+    if(!(a->avctx->flags&CODEC_FLAG_GRAY)){
+        a->dsp.idct_put(dest_cb, a->picture.linesize[1], block[4]);
+        a->dsp.idct_put(dest_cr, a->picture.linesize[2], block[5]);
+    }
+}
+
+static int decode_frame(AVCodecContext *avctx,
+                        void *data, int *data_size,
+                        AVPacket *avpkt)
+{
+    const uint8_t *buf = avpkt->data;
+    int buf_size = avpkt->size;
+    ASV1Context * const a = avctx->priv_data;
+    AVFrame *picture = data;
+    AVFrame * const p= &a->picture;
+    int mb_x, mb_y;
+
+    if(p->data[0])
+        avctx->release_buffer(avctx, p);
+
+    p->reference= 0;
+    if(avctx->get_buffer(avctx, p) < 0){
+        av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
+        return -1;
+    }
+    p->pict_type= AV_PICTURE_TYPE_I;
+    p->key_frame= 1;
+
+    av_fast_padded_malloc(&a->bitstream_buffer, &a->bitstream_buffer_size,
+                          buf_size);
+    if (!a->bitstream_buffer)
+        return AVERROR(ENOMEM);
+
+    if(avctx->codec_id == AV_CODEC_ID_ASV1)
+        a->dsp.bswap_buf((uint32_t*)a->bitstream_buffer, (const uint32_t*)buf, buf_size/4);
+    else{
+        int i;
+        for(i=0; i<buf_size; i++)
+            a->bitstream_buffer[i]= av_reverse[ buf[i] ];
+    }
+
+    init_get_bits(&a->gb, a->bitstream_buffer, buf_size*8);
+
+    for(mb_y=0; mb_y<a->mb_height2; mb_y++){
+        for(mb_x=0; mb_x<a->mb_width2; mb_x++){
+            if( decode_mb(a, a->block) <0)
+                return -1;
+
+            idct_put(a, mb_x, mb_y);
+        }
+    }
+
+    if(a->mb_width2 != a->mb_width){
+        mb_x= a->mb_width2;
+        for(mb_y=0; mb_y<a->mb_height2; mb_y++){
+            if( decode_mb(a, a->block) <0)
+                return -1;
+
+            idct_put(a, mb_x, mb_y);
+        }
+    }
+
+    if(a->mb_height2 != a->mb_height){
+        mb_y= a->mb_height2;
+        for(mb_x=0; mb_x<a->mb_width; mb_x++){
+            if( decode_mb(a, a->block) <0)
+                return -1;
+
+            idct_put(a, mb_x, mb_y);
+        }
+    }
+
+    *picture   = a->picture;
+    *data_size = sizeof(AVPicture);
+
+    emms_c();
+
+    return (get_bits_count(&a->gb)+31)/32*4;
+}
+
+static av_cold int decode_init(AVCodecContext *avctx){
+    ASV1Context * const a = avctx->priv_data;
+    AVFrame *p= &a->picture;
+    int i;
+    const int scale= avctx->codec_id == AV_CODEC_ID_ASV1 ? 1 : 2;
+
+    ff_asv_common_init(avctx);
+    init_vlcs(a);
+    ff_init_scantable(a->dsp.idct_permutation, &a->scantable, ff_asv_scantab);
+    avctx->pix_fmt= AV_PIX_FMT_YUV420P;
+
+    a->inv_qscale= avctx->extradata[0];
+    if(a->inv_qscale == 0){
+        av_log(avctx, AV_LOG_ERROR, "illegal qscale 0\n");
+        if(avctx->codec_id == AV_CODEC_ID_ASV1)
+            a->inv_qscale= 6;
+        else
+            a->inv_qscale= 10;
+    }
+
+    for(i=0; i<64; i++){
+        int index = ff_asv_scantab[i];
+
+        a->intra_matrix[i]= 64*scale*ff_mpeg1_default_intra_matrix[index] / a->inv_qscale;
+    }
+
+    p->qstride= a->mb_width;
+    p->qscale_table= av_malloc( p->qstride * a->mb_height);
+    p->quality= (32*scale + a->inv_qscale/2)/a->inv_qscale;
+    memset(p->qscale_table, p->quality, p->qstride*a->mb_height);
+
+    return 0;
+}
+
+static av_cold int decode_end(AVCodecContext *avctx){
+    ASV1Context * const a = avctx->priv_data;
+
+    av_freep(&a->bitstream_buffer);
+    av_freep(&a->picture.qscale_table);
+    a->bitstream_buffer_size=0;
+
+    if(a->picture.data[0])
+        avctx->release_buffer(avctx, &a->picture);
+
+    return 0;
+}
+
+AVCodec ff_asv1_decoder = {
+    .name           = "asv1",
+    .type           = AVMEDIA_TYPE_VIDEO,
+    .id             = AV_CODEC_ID_ASV1,
+    .priv_data_size = sizeof(ASV1Context),
+    .init           = decode_init,
+    .close          = decode_end,
+    .decode         = decode_frame,
+    .capabilities   = CODEC_CAP_DR1,
+    .long_name      = NULL_IF_CONFIG_SMALL("ASUS V1"),
+};
+
+AVCodec ff_asv2_decoder = {
+    .name           = "asv2",
+    .type           = AVMEDIA_TYPE_VIDEO,
+    .id             = AV_CODEC_ID_ASV2,
+    .priv_data_size = sizeof(ASV1Context),
+    .init           = decode_init,
+    .close          = decode_end,
+    .decode         = decode_frame,
+    .capabilities   = CODEC_CAP_DR1,
+    .long_name      = NULL_IF_CONFIG_SMALL("ASUS V2"),
+};
+
diff --git a/libavcodec/asvenc.c b/libavcodec/asvenc.c
new file mode 100644
index 0000000000..bf2cdafb62
--- /dev/null
+++ b/libavcodec/asvenc.c
@@ -0,0 +1,287 @@
+/*
+ * Copyright (c) 2003 Michael Niedermayer
+ *
+ * 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
+ */
+
+/**
+ * @file
+ * ASUS V1/V2 encoder.
+ */
+
+#include "libavutil/common.h"
+#include "libavutil/mem.h"
+
+#include "asv.h"
+#include "avcodec.h"
+#include "mpeg12data.h"
+
+static inline void asv2_put_bits(PutBitContext *pb, int n, int v){
+    put_bits(pb, n, av_reverse[ v << (8-n) ]);
+}
+
+static inline void asv1_put_level(PutBitContext *pb, int level){
+    unsigned int index= level + 3;
+
+    if(index <= 6) put_bits(pb, ff_asv_level_tab[index][1], ff_asv_level_tab[index][0]);
+    else{
+        put_bits(pb, ff_asv_level_tab[3][1], ff_asv_level_tab[3][0]);
+        put_sbits(pb, 8, level);
+    }
+}
+
+static inline void asv2_put_level(PutBitContext *pb, int level){
+    unsigned int index= level + 31;
+
+    if(index <= 62) put_bits(pb, ff_asv2_level_tab[index][1], ff_asv2_level_tab[index][0]);
+    else{
+        put_bits(pb, ff_asv2_level_tab[31][1], ff_asv2_level_tab[31][0]);
+        asv2_put_bits(pb, 8, level&0xFF);
+    }
+}
+
+static inline void asv1_encode_block(ASV1Context *a, DCTELEM block[64]){
+    int i;
+    int nc_count=0;
+
+    put_bits(&a->pb, 8, (block[0] + 32)>>6);
+    block[0]= 0;
+
+    for(i=0; i<10; i++){
+        const int index = ff_asv_scantab[4*i];
+        int ccp=0;
+
+        if( (block[index + 0] = (block[index + 0]*a->q_intra_matrix[index + 0] + (1<<15))>>16) ) ccp |= 8;
+        if( (block[index + 8] = (block[index + 8]*a->q_intra_matrix[index + 8] + (1<<15))>>16) ) ccp |= 4;
+        if( (block[index + 1] = (block[index + 1]*a->q_intra_matrix[index + 1] + (1<<15))>>16) ) ccp |= 2;
+        if( (block[index + 9] = (block[index + 9]*a->q_intra_matrix[index + 9] + (1<<15))>>16) ) ccp |= 1;
+
+        if(ccp){
+            for(;nc_count; nc_count--)
+                put_bits(&a->pb, ff_asv_ccp_tab[0][1], ff_asv_ccp_tab[0][0]);
+
+            put_bits(&a->pb, ff_asv_ccp_tab[ccp][1], ff_asv_ccp_tab[ccp][0]);
+
+            if(ccp&8) asv1_put_level(&a->pb, block[index + 0]);
+            if(ccp&4) asv1_put_level(&a->pb, block[index + 8]);
+            if(ccp&2) asv1_put_level(&a->pb, block[index + 1]);
+            if(ccp&1) asv1_put_level(&a->pb, block[index + 9]);
+        }else{
+            nc_count++;
+        }
+    }
+    put_bits(&a->pb, ff_asv_ccp_tab[16][1], ff_asv_ccp_tab[16][0]);
+}
+
+static inline void asv2_encode_block(ASV1Context *a, DCTELEM block[64]){
+    int i;
+    int count=0;
+
+    for(count=63; count>3; count--){
+        const int index = ff_asv_scantab[count];
+
+        if( (block[index]*a->q_intra_matrix[index] + (1<<15))>>16 )
+            break;
+    }
+
+    count >>= 2;
+
+    asv2_put_bits(&a->pb, 4, count);
+    asv2_put_bits(&a->pb, 8, (block[0] + 32)>>6);
+    block[0]= 0;
+
+    for(i=0; i<=count; i++){
+        const int index = ff_asv_scantab[4*i];
+        int ccp=0;
+
+        if( (block[index + 0] = (block[index + 0]*a->q_intra_matrix[index + 0] + (1<<15))>>16) ) ccp |= 8;
+        if( (block[index + 8] = (block[index + 8]*a->q_intra_matrix[index + 8] + (1<<15))>>16) ) ccp |= 4;
+        if( (block[index + 1] = (block[index + 1]*a->q_intra_matrix[index + 1] + (1<<15))>>16) ) ccp |= 2;
+        if( (block[index + 9] = (block[index + 9]*a->q_intra_matrix[index + 9] + (1<<15))>>16) ) ccp |= 1;
+
+        assert(i || ccp<8);
+        if(i) put_bits(&a->pb, ff_asv_ac_ccp_tab[ccp][1], ff_asv_ac_ccp_tab[ccp][0]);
+        else  put_bits(&a->pb, ff_asv_dc_ccp_tab[ccp][1], ff_asv_dc_ccp_tab[ccp][0]);
+
+        if(ccp){
+            if(ccp&8) asv2_put_level(&a->pb, block[index + 0]);
+            if(ccp&4) asv2_put_level(&a->pb, block[index + 8]);
+            if(ccp&2) asv2_put_level(&a->pb, block[index + 1]);
+            if(ccp&1) asv2_put_level(&a->pb, block[index + 9]);
+        }
+    }
+}
+
+#define MAX_MB_SIZE (30*16*16*3/2/8)
+
+static inline int encode_mb(ASV1Context *a, DCTELEM block[6][64]){
+    int i;
+
+    if (a->pb.buf_end - a->pb.buf - (put_bits_count(&a->pb)>>3) < MAX_MB_SIZE) {
+        av_log(a->avctx, AV_LOG_ERROR, "encoded frame too large\n");
+        return -1;
+    }
+
+    if(a->avctx->codec_id == AV_CODEC_ID_ASV1){
+        for(i=0; i<6; i++)
+            asv1_encode_block(a, block[i]);
+    }else{
+        for(i=0; i<6; i++)
+            asv2_encode_block(a, block[i]);
+    }
+    return 0;
+}
+
+static inline void dct_get(ASV1Context *a, int mb_x, int mb_y){
+    DCTELEM (*block)[64]= a->block;
+    int linesize= a->picture.linesize[0];
+    int i;
+
+    uint8_t *ptr_y  = a->picture.data[0] + (mb_y * 16* linesize              ) + mb_x * 16;
+    uint8_t *ptr_cb = a->picture.data[1] + (mb_y * 8 * a->picture.linesize[1]) + mb_x * 8;
+    uint8_t *ptr_cr = a->picture.data[2] + (mb_y * 8 * a->picture.linesize[2]) + mb_x * 8;
+
+    a->dsp.get_pixels(block[0], ptr_y                 , linesize);
+    a->dsp.get_pixels(block[1], ptr_y              + 8, linesize);
+    a->dsp.get_pixels(block[2], ptr_y + 8*linesize    , linesize);
+    a->dsp.get_pixels(block[3], ptr_y + 8*linesize + 8, linesize);
+    for(i=0; i<4; i++)
+        a->dsp.fdct(block[i]);
+
+    if(!(a->avctx->flags&CODEC_FLAG_GRAY)){
+        a->dsp.get_pixels(block[4], ptr_cb, a->picture.linesize[1]);
+        a->dsp.get_pixels(block[5], ptr_cr, a->picture.linesize[2]);
+        for(i=4; i<6; i++)
+            a->dsp.fdct(block[i]);
+    }
+}
+
+static int encode_frame(AVCodecContext *avctx, AVPacket *pkt,
+                        const AVFrame *pict, int *got_packet)
+{
+    ASV1Context * const a = avctx->priv_data;
+    AVFrame * const p= &a->picture;
+    int size, ret;
+    int mb_x, mb_y;
+
+    if (!pkt->data &&
+        (ret = av_new_packet(pkt, a->mb_height*a->mb_width*MAX_MB_SIZE +
+                                  FF_MIN_BUFFER_SIZE)) < 0) {
+        av_log(avctx, AV_LOG_ERROR, "Error getting output packet.\n");
+        return ret;
+    }
+
+    init_put_bits(&a->pb, pkt->data, pkt->size);
+
+    *p = *pict;
+    p->pict_type= AV_PICTURE_TYPE_I;
+    p->key_frame= 1;
+
+    for(mb_y=0; mb_y<a->mb_height2; mb_y++){
+        for(mb_x=0; mb_x<a->mb_width2; mb_x++){
+            dct_get(a, mb_x, mb_y);
+            encode_mb(a, a->block);
+        }
+    }
+
+    if(a->mb_width2 != a->mb_width){
+        mb_x= a->mb_width2;
+        for(mb_y=0; mb_y<a->mb_height2; mb_y++){
+            dct_get(a, mb_x, mb_y);
+            encode_mb(a, a->block);
+        }
+    }
+
+    if(a->mb_height2 != a->mb_height){
+        mb_y= a->mb_height2;
+        for(mb_x=0; mb_x<a->mb_width; mb_x++){
+            dct_get(a, mb_x, mb_y);
+            encode_mb(a, a->block);
+        }
+    }
+    emms_c();
+
+    avpriv_align_put_bits(&a->pb);
+    while(put_bits_count(&a->pb)&31)
+        put_bits(&a->pb, 8, 0);
+
+    size= put_bits_count(&a->pb)/32;
+
+    if(avctx->codec_id == AV_CODEC_ID_ASV1)
+        a->dsp.bswap_buf((uint32_t*)pkt->data, (uint32_t*)pkt->data, size);
+    else{
+        int i;
+        for(i=0; i<4*size; i++)
+            pkt->data[i] = av_reverse[pkt->data[i]];
+    }
+
+    pkt->size   = size*4;
+    pkt->flags |= AV_PKT_FLAG_KEY;
+    *got_packet = 1;
+
+    return 0;
+}
+
+static av_cold int encode_init(AVCodecContext *avctx){
+    ASV1Context * const a = avctx->priv_data;
+    int i;
+    const int scale= avctx->codec_id == AV_CODEC_ID_ASV1 ? 1 : 2;
+
+    ff_asv_common_init(avctx);
+
+    if(avctx->global_quality == 0) avctx->global_quality= 4*FF_QUALITY_SCALE;
+
+    a->inv_qscale= (32*scale*FF_QUALITY_SCALE +  avctx->global_quality/2) / avctx->global_quality;
+
+    avctx->extradata= av_mallocz(8);
+    avctx->extradata_size=8;
+    ((uint32_t*)avctx->extradata)[0]= av_le2ne32(a->inv_qscale);
+    ((uint32_t*)avctx->extradata)[1]= av_le2ne32(AV_RL32("ASUS"));
+
+    for(i=0; i<64; i++){
+        int q= 32*scale*ff_mpeg1_default_intra_matrix[i];
+        a->q_intra_matrix[i]= ((a->inv_qscale<<16) + q/2) / q;
+    }
+
+    return 0;
+}
+
+#if CONFIG_ASV1_ENCODER
+AVCodec ff_asv1_encoder = {
+    .name           = "asv1",
+    .type           = AVMEDIA_TYPE_VIDEO,
+    .id             = AV_CODEC_ID_ASV1,
+    .priv_data_size = sizeof(ASV1Context),
+    .init           = encode_init,
+    .encode2        = encode_frame,
+    .pix_fmts       = (const enum PixelFormat[]){ AV_PIX_FMT_YUV420P, AV_PIX_FMT_NONE },
+    .long_name      = NULL_IF_CONFIG_SMALL("ASUS V1"),
+};
+#endif
+
+#if CONFIG_ASV2_ENCODER
+AVCodec ff_asv2_encoder = {
+    .name           = "asv2",
+    .type           = AVMEDIA_TYPE_VIDEO,
+    .id             = AV_CODEC_ID_ASV2,
+    .priv_data_size = sizeof(ASV1Context),
+    .init           = encode_init,
+    .encode2        = encode_frame,
+    .pix_fmts       = (const enum PixelFormat[]){ AV_PIX_FMT_YUV420P, AV_PIX_FMT_NONE },
+    .long_name      = NULL_IF_CONFIG_SMALL("ASUS V2"),
+};
+#endif