--- /dev/null
+/*
+ * ASUS V1/V2 codec
+ * Copyright (c) 2003 Michael Niedermayer
+ *
+ * This library 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 of the License, or (at your option) any later version.
+ *
+ * This library 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 this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+/**
+ * @file asv1.c
+ * ASUS V1/V2 codec.
+ */
+
+#include "avcodec.h"
+#include "dsputil.h"
+#include "mpegvideo.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;
+ DCTELEM __align8 block[6][64];
+ uint16_t __align8 intra_matrix[64];
+ int __align8 q_intra_matrix[64];
+ uint8_t *bitstream_buffer;
+ 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 reverse[256]={
+0x00,0x80,0x40,0xC0,0x20,0xA0,0x60,0xE0,0x10,0x90,0x50,0xD0,0x30,0xB0,0x70,0xF0,
+0x08,0x88,0x48,0xC8,0x28,0xA8,0x68,0xE8,0x18,0x98,0x58,0xD8,0x38,0xB8,0x78,0xF8,
+0x04,0x84,0x44,0xC4,0x24,0xA4,0x64,0xE4,0x14,0x94,0x54,0xD4,0x34,0xB4,0x74,0xF4,
+0x0C,0x8C,0x4C,0xCC,0x2C,0xAC,0x6C,0xEC,0x1C,0x9C,0x5C,0xDC,0x3C,0xBC,0x7C,0xFC,
+0x02,0x82,0x42,0xC2,0x22,0xA2,0x62,0xE2,0x12,0x92,0x52,0xD2,0x32,0xB2,0x72,0xF2,
+0x0A,0x8A,0x4A,0xCA,0x2A,0xAA,0x6A,0xEA,0x1A,0x9A,0x5A,0xDA,0x3A,0xBA,0x7A,0xFA,
+0x06,0x86,0x46,0xC6,0x26,0xA6,0x66,0xE6,0x16,0x96,0x56,0xD6,0x36,0xB6,0x76,0xF6,
+0x0E,0x8E,0x4E,0xCE,0x2E,0xAE,0x6E,0xEE,0x1E,0x9E,0x5E,0xDE,0x3E,0xBE,0x7E,0xFE,
+0x01,0x81,0x41,0xC1,0x21,0xA1,0x61,0xE1,0x11,0x91,0x51,0xD1,0x31,0xB1,0x71,0xF1,
+0x09,0x89,0x49,0xC9,0x29,0xA9,0x69,0xE9,0x19,0x99,0x59,0xD9,0x39,0xB9,0x79,0xF9,
+0x05,0x85,0x45,0xC5,0x25,0xA5,0x65,0xE5,0x15,0x95,0x55,0xD5,0x35,0xB5,0x75,0xF5,
+0x0D,0x8D,0x4D,0xCD,0x2D,0xAD,0x6D,0xED,0x1D,0x9D,0x5D,0xDD,0x3D,0xBD,0x7D,0xFD,
+0x03,0x83,0x43,0xC3,0x23,0xA3,0x63,0xE3,0x13,0x93,0x53,0xD3,0x33,0xB3,0x73,0xF3,
+0x0B,0x8B,0x4B,0xCB,0x2B,0xAB,0x6B,0xEB,0x1B,0x9B,0x5B,0xDB,0x3B,0xBB,0x7B,0xFB,
+0x07,0x87,0x47,0xC7,0x27,0xA7,0x67,0xE7,0x17,0x97,0x57,0xD7,0x37,0xB7,0x77,0xF7,
+0x0F,0x8F,0x4F,0xCF,0x2F,0xAF,0x6F,0xEF,0x1F,0x9F,0x5F,0xDF,0x3F,0xBF,0x7F,0xFF,
+};
+
+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 void init_vlcs(ASV1Context *a){
+ static int done = 0;
+
+ if (!done) {
+ done = 1;
+
+ init_vlc(&ccp_vlc, VLC_BITS, 17,
+ &ccp_tab[0][1], 2, 1,
+ &ccp_tab[0][0], 2, 1);
+ init_vlc(&dc_ccp_vlc, VLC_BITS, 8,
+ &dc_ccp_tab[0][1], 2, 1,
+ &dc_ccp_tab[0][0], 2, 1);
+ init_vlc(&ac_ccp_vlc, VLC_BITS, 16,
+ &ac_ccp_tab[0][1], 2, 1,
+ &ac_ccp_tab[0][0], 2, 1);
+ init_vlc(&level_vlc, VLC_BITS, 7,
+ &level_tab[0][1], 2, 1,
+ &level_tab[0][0], 2, 1);
+ init_vlc(&asv2_level_vlc, ASV2_LEVEL_VLC_BITS, 63,
+ &asv2_level_tab[0][1], 2, 1,
+ &asv2_level_tab[0][0], 2, 1);
+ }
+}
+
+//FIXME write a reversed bitstream reader to avoid the double reverse
+static inline int asv2_get_bits(GetBitContext *gb, int n){
+ return reverse[ get_bits(gb, n) << (8-n) ];
+}
+
+static inline void asv2_put_bits(PutBitContext *pb, int n, int v){
+ put_bits(pb, n, 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_bits(pb, 8, level&0xFF);
+ }
+}
+
+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){
+ printf("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;
+
+ 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 == 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 encode_mb(ASV1Context *a, DCTELEM block[6][64]){
+ int i;
+
+ if(a->avctx->codec_id == 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]);
+ }
+}
+
+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,
+ uint8_t *buf, int buf_size)
+{
+ ASV1Context * const a = avctx->priv_data;
+ AVFrame *picture = data;
+ AVFrame * const p= (AVFrame*)&a->picture;
+ int mb_x, mb_y;
+
+ *data_size = 0;
+
+ /* special case for last picture */
+ if (buf_size == 0) {
+ return 0;
+ }
+
+ if(p->data[0])
+ avctx->release_buffer(avctx, p);
+
+ p->reference= 0;
+ if(avctx->get_buffer(avctx, p) < 0){
+ fprintf(stderr, "get_buffer() failed\n");
+ return -1;
+ }
+ p->pict_type= I_TYPE;
+ p->key_frame= 1;
+
+ a->bitstream_buffer= av_fast_realloc(a->bitstream_buffer, &a->bitstream_buffer_size, buf_size + FF_INPUT_BUFFER_PADDING_SIZE);
+
+ if(avctx->codec_id == CODEC_ID_ASV1)
+ a->dsp.bswap_buf((uint32_t*)a->bitstream_buffer, (uint32_t*)buf, buf_size/4);
+ else{
+ int i;
+ for(i=0; i<buf_size; i++)
+ a->bitstream_buffer[i]= 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);
+ }
+ }
+#if 0
+int i;
+printf("%d %d\n", 8*buf_size, get_bits_count(&a->gb));
+for(i=get_bits_count(&a->gb); i<8*buf_size; i++){
+ printf("%d", get_bits1(&a->gb));
+}
+
+for(i=0; i<s->avctx->extradata_size; i++){
+ printf("%c\n", ((uint8_t*)s->avctx->extradata)[i]);
+}
+#endif
+
+ *picture= *(AVFrame*)&a->picture;
+ *data_size = sizeof(AVPicture);
+
+ emms_c();
+
+ return (get_bits_count(&a->gb)+31)/32*4;
+}
+
+static int encode_frame(AVCodecContext *avctx, unsigned char *buf, int buf_size, void *data){
+ ASV1Context * const a = avctx->priv_data;
+ AVFrame *pict = data;
+ AVFrame * const p= (AVFrame*)&a->picture;
+ int size;
+ int mb_x, mb_y;
+
+ init_put_bits(&a->pb, buf, buf_size, NULL, NULL);
+
+ *p = *pict;
+ p->pict_type= I_TYPE;
+ 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();
+
+ align_put_bits(&a->pb);
+ while(get_bit_count(&a->pb)&31)
+ put_bits(&a->pb, 8, 0);
+
+ size= get_bit_count(&a->pb)/32;
+
+ if(avctx->codec_id == CODEC_ID_ASV1)
+ a->dsp.bswap_buf((uint32_t*)buf, (uint32_t*)buf, size);
+ else{
+ int i;
+ for(i=0; i<4*size; i++)
+ buf[i]= reverse[ buf[i] ];
+ }
+
+ return size*4;
+}
+
+static void common_init(AVCodecContext *avctx){
+ ASV1Context * const a = avctx->priv_data;
+
+ 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= (AVFrame*)&a->picture;
+ a->avctx= avctx;
+}
+
+static int decode_init(AVCodecContext *avctx){
+ ASV1Context * const a = avctx->priv_data;
+ AVFrame *p= (AVFrame*)&a->picture;
+ int i;
+ const int scale= avctx->codec_id == CODEC_ID_ASV1 ? 1 : 2;
+
+ common_init(avctx);
+ init_vlcs(a);
+ ff_init_scantable(a->dsp.idct_permutation, &a->scantable, scantab);
+
+ a->inv_qscale= ((uint8_t*)avctx->extradata)[0];
+ if(a->inv_qscale == 0){
+ printf("illegal qscale 0\n");
+ if(avctx->codec_id == 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_mallocz( 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 int encode_init(AVCodecContext *avctx){
+ ASV1Context * const a = avctx->priv_data;
+ int i;
+ const int scale= avctx->codec_id == 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]= le2me_32(a->inv_qscale);
+ ((uint32_t*)avctx->extradata)[1]= le2me_32(ff_get_fourcc("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;
+}
+
+static 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;
+
+ avcodec_default_free_buffers(avctx);
+
+ return 0;
+}
+
+AVCodec asv1_decoder = {
+ "asv1",
+ CODEC_TYPE_VIDEO,
+ CODEC_ID_ASV1,
+ sizeof(ASV1Context),
+ decode_init,
+ NULL,
+ decode_end,
+ decode_frame,
+ CODEC_CAP_DR1,
+};
+
+AVCodec asv2_decoder = {
+ "asv2",
+ CODEC_TYPE_VIDEO,
+ CODEC_ID_ASV2,
+ sizeof(ASV1Context),
+ decode_init,
+ NULL,
+ decode_end,
+ decode_frame,
+ CODEC_CAP_DR1,
+};
+
+#ifdef CONFIG_ENCODERS
+
+AVCodec asv1_encoder = {
+ "asv1",
+ CODEC_TYPE_VIDEO,
+ CODEC_ID_ASV1,
+ sizeof(ASV1Context),
+ encode_init,
+ encode_frame,
+ //encode_end,
+};
+
+AVCodec asv2_encoder = {
+ "asv2",
+ CODEC_TYPE_VIDEO,
+ CODEC_ID_ASV2,
+ sizeof(ASV1Context),
+ encode_init,
+ encode_frame,
+ //encode_end,
+};
+
+#endif //CONFIG_ENCODERS
projects / synfig.git / blobdiff