1/* 2 * ASUS V1/V2 codec 3 * Copyright (c) 2003 Michael Niedermayer 4 * 5 * This file is part of Libav. 6 * 7 * Libav is free software; you can redistribute it and/or 8 * modify it under the terms of the GNU Lesser General Public 9 * License as published by the Free Software Foundation; either 10 * version 2.1 of the License, or (at your option) any later version. 11 * 12 * Libav is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 15 * Lesser General Public License for more details. 16 * 17 * You should have received a copy of the GNU Lesser General Public 18 * License along with Libav; if not, write to the Free Software 19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 20 */ 21 22/** 23 * @file 24 * ASUS V1/V2 codec. 25 */ 26 27#include "avcodec.h" 28#include "libavutil/common.h" 29#include "put_bits.h" 30#include "dsputil.h" 31#include "mpeg12data.h" 32 33//#undef NDEBUG 34//#include <assert.h> 35 36#define VLC_BITS 6 37#define ASV2_LEVEL_VLC_BITS 10 38 39typedef struct ASV1Context{ 40 AVCodecContext *avctx; 41 DSPContext dsp; 42 AVFrame picture; 43 PutBitContext pb; 44 GetBitContext gb; 45 ScanTable scantable; 46 int inv_qscale; 47 int mb_width; 48 int mb_height; 49 int mb_width2; 50 int mb_height2; 51 DECLARE_ALIGNED(16, DCTELEM, block)[6][64]; 52 uint16_t intra_matrix[64]; 53 int q_intra_matrix[64]; 54 uint8_t *bitstream_buffer; 55 unsigned int bitstream_buffer_size; 56} ASV1Context; 57 58static const uint8_t scantab[64]={ 59 0x00,0x08,0x01,0x09,0x10,0x18,0x11,0x19, 60 0x02,0x0A,0x03,0x0B,0x12,0x1A,0x13,0x1B, 61 0x04,0x0C,0x05,0x0D,0x20,0x28,0x21,0x29, 62 0x06,0x0E,0x07,0x0F,0x14,0x1C,0x15,0x1D, 63 0x22,0x2A,0x23,0x2B,0x30,0x38,0x31,0x39, 64 0x16,0x1E,0x17,0x1F,0x24,0x2C,0x25,0x2D, 65 0x32,0x3A,0x33,0x3B,0x26,0x2E,0x27,0x2F, 66 0x34,0x3C,0x35,0x3D,0x36,0x3E,0x37,0x3F, 67}; 68 69 70static const uint8_t ccp_tab[17][2]={ 71 {0x2,2}, {0x7,5}, {0xB,5}, {0x3,5}, 72 {0xD,5}, {0x5,5}, {0x9,5}, {0x1,5}, 73 {0xE,5}, {0x6,5}, {0xA,5}, {0x2,5}, 74 {0xC,5}, {0x4,5}, {0x8,5}, {0x3,2}, 75 {0xF,5}, //EOB 76}; 77 78static const uint8_t level_tab[7][2]={ 79 {3,4}, {3,3}, {3,2}, {0,3}, {2,2}, {2,3}, {2,4} 80}; 81 82static const uint8_t dc_ccp_tab[8][2]={ 83 {0x1,2}, {0xD,4}, {0xF,4}, {0xC,4}, 84 {0x5,3}, {0xE,4}, {0x4,3}, {0x0,2}, 85}; 86 87static const uint8_t ac_ccp_tab[16][2]={ 88 {0x00,2}, {0x3B,6}, {0x0A,4}, {0x3A,6}, 89 {0x02,3}, {0x39,6}, {0x3C,6}, {0x38,6}, 90 {0x03,3}, {0x3D,6}, {0x08,4}, {0x1F,5}, 91 {0x09,4}, {0x0B,4}, {0x0D,4}, {0x0C,4}, 92}; 93 94static const uint8_t asv2_level_tab[63][2]={ 95 {0x3F,10},{0x2F,10},{0x37,10},{0x27,10},{0x3B,10},{0x2B,10},{0x33,10},{0x23,10}, 96 {0x3D,10},{0x2D,10},{0x35,10},{0x25,10},{0x39,10},{0x29,10},{0x31,10},{0x21,10}, 97 {0x1F, 8},{0x17, 8},{0x1B, 8},{0x13, 8},{0x1D, 8},{0x15, 8},{0x19, 8},{0x11, 8}, 98 {0x0F, 6},{0x0B, 6},{0x0D, 6},{0x09, 6}, 99 {0x07, 4},{0x05, 4}, 100 {0x03, 2}, 101 {0x00, 5}, 102 {0x02, 2}, 103 {0x04, 4},{0x06, 4}, 104 {0x08, 6},{0x0C, 6},{0x0A, 6},{0x0E, 6}, 105 {0x10, 8},{0x18, 8},{0x14, 8},{0x1C, 8},{0x12, 8},{0x1A, 8},{0x16, 8},{0x1E, 8}, 106 {0x20,10},{0x30,10},{0x28,10},{0x38,10},{0x24,10},{0x34,10},{0x2C,10},{0x3C,10}, 107 {0x22,10},{0x32,10},{0x2A,10},{0x3A,10},{0x26,10},{0x36,10},{0x2E,10},{0x3E,10}, 108}; 109 110 111static VLC ccp_vlc; 112static VLC level_vlc; 113static VLC dc_ccp_vlc; 114static VLC ac_ccp_vlc; 115static VLC asv2_level_vlc; 116 117static av_cold void init_vlcs(ASV1Context *a){ 118 static int done = 0; 119 120 if (!done) { 121 done = 1; 122 123 INIT_VLC_STATIC(&ccp_vlc, VLC_BITS, 17, 124 &ccp_tab[0][1], 2, 1, 125 &ccp_tab[0][0], 2, 1, 64); 126 INIT_VLC_STATIC(&dc_ccp_vlc, VLC_BITS, 8, 127 &dc_ccp_tab[0][1], 2, 1, 128 &dc_ccp_tab[0][0], 2, 1, 64); 129 INIT_VLC_STATIC(&ac_ccp_vlc, VLC_BITS, 16, 130 &ac_ccp_tab[0][1], 2, 1, 131 &ac_ccp_tab[0][0], 2, 1, 64); 132 INIT_VLC_STATIC(&level_vlc, VLC_BITS, 7, 133 &level_tab[0][1], 2, 1, 134 &level_tab[0][0], 2, 1, 64); 135 INIT_VLC_STATIC(&asv2_level_vlc, ASV2_LEVEL_VLC_BITS, 63, 136 &asv2_level_tab[0][1], 2, 1, 137 &asv2_level_tab[0][0], 2, 1, 1024); 138 } 139} 140 141//FIXME write a reversed bitstream reader to avoid the double reverse 142static inline int asv2_get_bits(GetBitContext *gb, int n){ 143 return av_reverse[ get_bits(gb, n) << (8-n) ]; 144} 145 146static inline void asv2_put_bits(PutBitContext *pb, int n, int v){ 147 put_bits(pb, n, av_reverse[ v << (8-n) ]); 148} 149 150static inline int asv1_get_level(GetBitContext *gb){ 151 int code= get_vlc2(gb, level_vlc.table, VLC_BITS, 1); 152 153 if(code==3) return get_sbits(gb, 8); 154 else return code - 3; 155} 156 157static inline int asv2_get_level(GetBitContext *gb){ 158 int code= get_vlc2(gb, asv2_level_vlc.table, ASV2_LEVEL_VLC_BITS, 1); 159 160 if(code==31) return (int8_t)asv2_get_bits(gb, 8); 161 else return code - 31; 162} 163 164static inline void asv1_put_level(PutBitContext *pb, int level){ 165 unsigned int index= level + 3; 166 167 if(index <= 6) put_bits(pb, level_tab[index][1], level_tab[index][0]); 168 else{ 169 put_bits(pb, level_tab[3][1], level_tab[3][0]); 170 put_sbits(pb, 8, level); 171 } 172} 173 174static inline void asv2_put_level(PutBitContext *pb, int level){ 175 unsigned int index= level + 31; 176 177 if(index <= 62) put_bits(pb, asv2_level_tab[index][1], asv2_level_tab[index][0]); 178 else{ 179 put_bits(pb, asv2_level_tab[31][1], asv2_level_tab[31][0]); 180 asv2_put_bits(pb, 8, level&0xFF); 181 } 182} 183 184static inline int asv1_decode_block(ASV1Context *a, DCTELEM block[64]){ 185 int i; 186 187 block[0]= 8*get_bits(&a->gb, 8); 188 189 for(i=0; i<11; i++){ 190 const int ccp= get_vlc2(&a->gb, ccp_vlc.table, VLC_BITS, 1); 191 192 if(ccp){ 193 if(ccp == 16) break; 194 if(ccp < 0 || i>=10){ 195 av_log(a->avctx, AV_LOG_ERROR, "coded coeff pattern damaged\n"); 196 return -1; 197 } 198 199 if(ccp&8) block[a->scantable.permutated[4*i+0]]= (asv1_get_level(&a->gb) * a->intra_matrix[4*i+0])>>4; 200 if(ccp&4) block[a->scantable.permutated[4*i+1]]= (asv1_get_level(&a->gb) * a->intra_matrix[4*i+1])>>4; 201 if(ccp&2) block[a->scantable.permutated[4*i+2]]= (asv1_get_level(&a->gb) * a->intra_matrix[4*i+2])>>4; 202 if(ccp&1) block[a->scantable.permutated[4*i+3]]= (asv1_get_level(&a->gb) * a->intra_matrix[4*i+3])>>4; 203 } 204 } 205 206 return 0; 207} 208 209static inline int asv2_decode_block(ASV1Context *a, DCTELEM block[64]){ 210 int i, count, ccp; 211 212 count= asv2_get_bits(&a->gb, 4); 213 214 block[0]= 8*asv2_get_bits(&a->gb, 8); 215 216 ccp= get_vlc2(&a->gb, dc_ccp_vlc.table, VLC_BITS, 1); 217 if(ccp){ 218 if(ccp&4) block[a->scantable.permutated[1]]= (asv2_get_level(&a->gb) * a->intra_matrix[1])>>4; 219 if(ccp&2) block[a->scantable.permutated[2]]= (asv2_get_level(&a->gb) * a->intra_matrix[2])>>4; 220 if(ccp&1) block[a->scantable.permutated[3]]= (asv2_get_level(&a->gb) * a->intra_matrix[3])>>4; 221 } 222 223 for(i=1; i<count+1; i++){ 224 const int ccp= get_vlc2(&a->gb, ac_ccp_vlc.table, VLC_BITS, 1); 225 226 if(ccp){ 227 if(ccp&8) block[a->scantable.permutated[4*i+0]]= (asv2_get_level(&a->gb) * a->intra_matrix[4*i+0])>>4; 228 if(ccp&4) block[a->scantable.permutated[4*i+1]]= (asv2_get_level(&a->gb) * a->intra_matrix[4*i+1])>>4; 229 if(ccp&2) block[a->scantable.permutated[4*i+2]]= (asv2_get_level(&a->gb) * a->intra_matrix[4*i+2])>>4; 230 if(ccp&1) block[a->scantable.permutated[4*i+3]]= (asv2_get_level(&a->gb) * a->intra_matrix[4*i+3])>>4; 231 } 232 } 233 234 return 0; 235} 236 237static inline void asv1_encode_block(ASV1Context *a, DCTELEM block[64]){ 238 int i; 239 int nc_count=0; 240 241 put_bits(&a->pb, 8, (block[0] + 32)>>6); 242 block[0]= 0; 243 244 for(i=0; i<10; i++){ 245 const int index= scantab[4*i]; 246 int ccp=0; 247 248 if( (block[index + 0] = (block[index + 0]*a->q_intra_matrix[index + 0] + (1<<15))>>16) ) ccp |= 8; 249 if( (block[index + 8] = (block[index + 8]*a->q_intra_matrix[index + 8] + (1<<15))>>16) ) ccp |= 4; 250 if( (block[index + 1] = (block[index + 1]*a->q_intra_matrix[index + 1] + (1<<15))>>16) ) ccp |= 2; 251 if( (block[index + 9] = (block[index + 9]*a->q_intra_matrix[index + 9] + (1<<15))>>16) ) ccp |= 1; 252 253 if(ccp){ 254 for(;nc_count; nc_count--) 255 put_bits(&a->pb, ccp_tab[0][1], ccp_tab[0][0]); 256 257 put_bits(&a->pb, ccp_tab[ccp][1], ccp_tab[ccp][0]); 258 259 if(ccp&8) asv1_put_level(&a->pb, block[index + 0]); 260 if(ccp&4) asv1_put_level(&a->pb, block[index + 8]); 261 if(ccp&2) asv1_put_level(&a->pb, block[index + 1]); 262 if(ccp&1) asv1_put_level(&a->pb, block[index + 9]); 263 }else{ 264 nc_count++; 265 } 266 } 267 put_bits(&a->pb, ccp_tab[16][1], ccp_tab[16][0]); 268} 269 270static inline void asv2_encode_block(ASV1Context *a, DCTELEM block[64]){ 271 int i; 272 int count=0; 273 274 for(count=63; count>3; count--){ 275 const int index= scantab[count]; 276 277 if( (block[index]*a->q_intra_matrix[index] + (1<<15))>>16 ) 278 break; 279 } 280 281 count >>= 2; 282 283 asv2_put_bits(&a->pb, 4, count); 284 asv2_put_bits(&a->pb, 8, (block[0] + 32)>>6); 285 block[0]= 0; 286 287 for(i=0; i<=count; i++){ 288 const int index= scantab[4*i]; 289 int ccp=0; 290 291 if( (block[index + 0] = (block[index + 0]*a->q_intra_matrix[index + 0] + (1<<15))>>16) ) ccp |= 8; 292 if( (block[index + 8] = (block[index + 8]*a->q_intra_matrix[index + 8] + (1<<15))>>16) ) ccp |= 4; 293 if( (block[index + 1] = (block[index + 1]*a->q_intra_matrix[index + 1] + (1<<15))>>16) ) ccp |= 2; 294 if( (block[index + 9] = (block[index + 9]*a->q_intra_matrix[index + 9] + (1<<15))>>16) ) ccp |= 1; 295 296 assert(i || ccp<8); 297 if(i) put_bits(&a->pb, ac_ccp_tab[ccp][1], ac_ccp_tab[ccp][0]); 298 else put_bits(&a->pb, dc_ccp_tab[ccp][1], dc_ccp_tab[ccp][0]); 299 300 if(ccp){ 301 if(ccp&8) asv2_put_level(&a->pb, block[index + 0]); 302 if(ccp&4) asv2_put_level(&a->pb, block[index + 8]); 303 if(ccp&2) asv2_put_level(&a->pb, block[index + 1]); 304 if(ccp&1) asv2_put_level(&a->pb, block[index + 9]); 305 } 306 } 307} 308 309static inline int decode_mb(ASV1Context *a, DCTELEM block[6][64]){ 310 int i; 311 312 a->dsp.clear_blocks(block[0]); 313 314 if(a->avctx->codec_id == CODEC_ID_ASV1){ 315 for(i=0; i<6; i++){ 316 if( asv1_decode_block(a, block[i]) < 0) 317 return -1; 318 } 319 }else{ 320 for(i=0; i<6; i++){ 321 if( asv2_decode_block(a, block[i]) < 0) 322 return -1; 323 } 324 } 325 return 0; 326} 327 328static inline int encode_mb(ASV1Context *a, DCTELEM block[6][64]){ 329 int i; 330 331 if(a->pb.buf_end - a->pb.buf - (put_bits_count(&a->pb)>>3) < 30*16*16*3/2/8){ 332 av_log(a->avctx, AV_LOG_ERROR, "encoded frame too large\n"); 333 return -1; 334 } 335 336 if(a->avctx->codec_id == CODEC_ID_ASV1){ 337 for(i=0; i<6; i++) 338 asv1_encode_block(a, block[i]); 339 }else{ 340 for(i=0; i<6; i++) 341 asv2_encode_block(a, block[i]); 342 } 343 return 0; 344} 345 346static inline void idct_put(ASV1Context *a, int mb_x, int mb_y){ 347 DCTELEM (*block)[64]= a->block; 348 int linesize= a->picture.linesize[0]; 349 350 uint8_t *dest_y = a->picture.data[0] + (mb_y * 16* linesize ) + mb_x * 16; 351 uint8_t *dest_cb = a->picture.data[1] + (mb_y * 8 * a->picture.linesize[1]) + mb_x * 8; 352 uint8_t *dest_cr = a->picture.data[2] + (mb_y * 8 * a->picture.linesize[2]) + mb_x * 8; 353 354 a->dsp.idct_put(dest_y , linesize, block[0]); 355 a->dsp.idct_put(dest_y + 8, linesize, block[1]); 356 a->dsp.idct_put(dest_y + 8*linesize , linesize, block[2]); 357 a->dsp.idct_put(dest_y + 8*linesize + 8, linesize, block[3]); 358 359 if(!(a->avctx->flags&CODEC_FLAG_GRAY)){ 360 a->dsp.idct_put(dest_cb, a->picture.linesize[1], block[4]); 361 a->dsp.idct_put(dest_cr, a->picture.linesize[2], block[5]); 362 } 363} 364 365static inline void dct_get(ASV1Context *a, int mb_x, int mb_y){ 366 DCTELEM (*block)[64]= a->block; 367 int linesize= a->picture.linesize[0]; 368 int i; 369 370 uint8_t *ptr_y = a->picture.data[0] + (mb_y * 16* linesize ) + mb_x * 16; 371 uint8_t *ptr_cb = a->picture.data[1] + (mb_y * 8 * a->picture.linesize[1]) + mb_x * 8; 372 uint8_t *ptr_cr = a->picture.data[2] + (mb_y * 8 * a->picture.linesize[2]) + mb_x * 8; 373 374 a->dsp.get_pixels(block[0], ptr_y , linesize); 375 a->dsp.get_pixels(block[1], ptr_y + 8, linesize); 376 a->dsp.get_pixels(block[2], ptr_y + 8*linesize , linesize); 377 a->dsp.get_pixels(block[3], ptr_y + 8*linesize + 8, linesize); 378 for(i=0; i<4; i++) 379 a->dsp.fdct(block[i]); 380 381 if(!(a->avctx->flags&CODEC_FLAG_GRAY)){ 382 a->dsp.get_pixels(block[4], ptr_cb, a->picture.linesize[1]); 383 a->dsp.get_pixels(block[5], ptr_cr, a->picture.linesize[2]); 384 for(i=4; i<6; i++) 385 a->dsp.fdct(block[i]); 386 } 387} 388 389static int decode_frame(AVCodecContext *avctx, 390 void *data, int *data_size, 391 AVPacket *avpkt) 392{ 393 const uint8_t *buf = avpkt->data; 394 int buf_size = avpkt->size; 395 ASV1Context * const a = avctx->priv_data; 396 AVFrame *picture = data; 397 AVFrame * const p= &a->picture; 398 int mb_x, mb_y; 399 400 if(p->data[0]) 401 avctx->release_buffer(avctx, p); 402 403 p->reference= 0; 404 if(avctx->get_buffer(avctx, p) < 0){ 405 av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n"); 406 return -1; 407 } 408 p->pict_type= AV_PICTURE_TYPE_I; 409 p->key_frame= 1; 410 411 av_fast_malloc(&a->bitstream_buffer, &a->bitstream_buffer_size, buf_size + FF_INPUT_BUFFER_PADDING_SIZE); 412 if (!a->bitstream_buffer) 413 return AVERROR(ENOMEM); 414 415 if(avctx->codec_id == CODEC_ID_ASV1) 416 a->dsp.bswap_buf((uint32_t*)a->bitstream_buffer, (const uint32_t*)buf, buf_size/4); 417 else{ 418 int i; 419 for(i=0; i<buf_size; i++) 420 a->bitstream_buffer[i]= av_reverse[ buf[i] ]; 421 } 422 423 init_get_bits(&a->gb, a->bitstream_buffer, buf_size*8); 424 425 for(mb_y=0; mb_y<a->mb_height2; mb_y++){ 426 for(mb_x=0; mb_x<a->mb_width2; mb_x++){ 427 if( decode_mb(a, a->block) <0) 428 return -1; 429 430 idct_put(a, mb_x, mb_y); 431 } 432 } 433 434 if(a->mb_width2 != a->mb_width){ 435 mb_x= a->mb_width2; 436 for(mb_y=0; mb_y<a->mb_height2; mb_y++){ 437 if( decode_mb(a, a->block) <0) 438 return -1; 439 440 idct_put(a, mb_x, mb_y); 441 } 442 } 443 444 if(a->mb_height2 != a->mb_height){ 445 mb_y= a->mb_height2; 446 for(mb_x=0; mb_x<a->mb_width; mb_x++){ 447 if( decode_mb(a, a->block) <0) 448 return -1; 449 450 idct_put(a, mb_x, mb_y); 451 } 452 } 453 454 *picture= *(AVFrame*)&a->picture; 455 *data_size = sizeof(AVPicture); 456 457 emms_c(); 458 459 return (get_bits_count(&a->gb)+31)/32*4; 460} 461 462#if CONFIG_ASV1_ENCODER || CONFIG_ASV2_ENCODER 463static int encode_frame(AVCodecContext *avctx, unsigned char *buf, int buf_size, void *data){ 464 ASV1Context * const a = avctx->priv_data; 465 AVFrame *pict = data; 466 AVFrame * const p= &a->picture; 467 int size; 468 int mb_x, mb_y; 469 470 init_put_bits(&a->pb, buf, buf_size); 471 472 *p = *pict; 473 p->pict_type= AV_PICTURE_TYPE_I; 474 p->key_frame= 1; 475 476 for(mb_y=0; mb_y<a->mb_height2; mb_y++){ 477 for(mb_x=0; mb_x<a->mb_width2; mb_x++){ 478 dct_get(a, mb_x, mb_y); 479 encode_mb(a, a->block); 480 } 481 } 482 483 if(a->mb_width2 != a->mb_width){ 484 mb_x= a->mb_width2; 485 for(mb_y=0; mb_y<a->mb_height2; mb_y++){ 486 dct_get(a, mb_x, mb_y); 487 encode_mb(a, a->block); 488 } 489 } 490 491 if(a->mb_height2 != a->mb_height){ 492 mb_y= a->mb_height2; 493 for(mb_x=0; mb_x<a->mb_width; mb_x++){ 494 dct_get(a, mb_x, mb_y); 495 encode_mb(a, a->block); 496 } 497 } 498 emms_c(); 499 500 avpriv_align_put_bits(&a->pb); 501 while(put_bits_count(&a->pb)&31) 502 put_bits(&a->pb, 8, 0); 503 504 size= put_bits_count(&a->pb)/32; 505 506 if(avctx->codec_id == CODEC_ID_ASV1) 507 a->dsp.bswap_buf((uint32_t*)buf, (uint32_t*)buf, size); 508 else{ 509 int i; 510 for(i=0; i<4*size; i++) 511 buf[i]= av_reverse[ buf[i] ]; 512 } 513 514 return size*4; 515} 516#endif /* CONFIG_ASV1_ENCODER || CONFIG_ASV2_ENCODER */ 517 518static av_cold void common_init(AVCodecContext *avctx){ 519 ASV1Context * const a = avctx->priv_data; 520 521 dsputil_init(&a->dsp, avctx); 522 523 a->mb_width = (avctx->width + 15) / 16; 524 a->mb_height = (avctx->height + 15) / 16; 525 a->mb_width2 = (avctx->width + 0) / 16; 526 a->mb_height2 = (avctx->height + 0) / 16; 527 528 avctx->coded_frame= &a->picture; 529 a->avctx= avctx; 530} 531 532static av_cold int decode_init(AVCodecContext *avctx){ 533 ASV1Context * const a = avctx->priv_data; 534 AVFrame *p= &a->picture; 535 int i; 536 const int scale= avctx->codec_id == CODEC_ID_ASV1 ? 1 : 2; 537 538 common_init(avctx); 539 init_vlcs(a); 540 ff_init_scantable(a->dsp.idct_permutation, &a->scantable, scantab); 541 avctx->pix_fmt= PIX_FMT_YUV420P; 542 543 a->inv_qscale= avctx->extradata[0]; 544 if(a->inv_qscale == 0){ 545 av_log(avctx, AV_LOG_ERROR, "illegal qscale 0\n"); 546 if(avctx->codec_id == CODEC_ID_ASV1) 547 a->inv_qscale= 6; 548 else 549 a->inv_qscale= 10; 550 } 551 552 for(i=0; i<64; i++){ 553 int index= scantab[i]; 554 555 a->intra_matrix[i]= 64*scale*ff_mpeg1_default_intra_matrix[index] / a->inv_qscale; 556 } 557 558 p->qstride= a->mb_width; 559 p->qscale_table= av_malloc( p->qstride * a->mb_height); 560 p->quality= (32*scale + a->inv_qscale/2)/a->inv_qscale; 561 memset(p->qscale_table, p->quality, p->qstride*a->mb_height); 562 563 return 0; 564} 565 566#if CONFIG_ASV1_ENCODER || CONFIG_ASV2_ENCODER 567static av_cold int encode_init(AVCodecContext *avctx){ 568 ASV1Context * const a = avctx->priv_data; 569 int i; 570 const int scale= avctx->codec_id == CODEC_ID_ASV1 ? 1 : 2; 571 572 common_init(avctx); 573 574 if(avctx->global_quality == 0) avctx->global_quality= 4*FF_QUALITY_SCALE; 575 576 a->inv_qscale= (32*scale*FF_QUALITY_SCALE + avctx->global_quality/2) / avctx->global_quality; 577 578 avctx->extradata= av_mallocz(8); 579 avctx->extradata_size=8; 580 ((uint32_t*)avctx->extradata)[0]= av_le2ne32(a->inv_qscale); 581 ((uint32_t*)avctx->extradata)[1]= av_le2ne32(AV_RL32("ASUS")); 582 583 for(i=0; i<64; i++){ 584 int q= 32*scale*ff_mpeg1_default_intra_matrix[i]; 585 a->q_intra_matrix[i]= ((a->inv_qscale<<16) + q/2) / q; 586 } 587 588 return 0; 589} 590#endif /* CONFIG_ASV1_ENCODER || CONFIG_ASV2_ENCODER */ 591 592static av_cold int decode_end(AVCodecContext *avctx){ 593 ASV1Context * const a = avctx->priv_data; 594 595 av_freep(&a->bitstream_buffer); 596 av_freep(&a->picture.qscale_table); 597 a->bitstream_buffer_size=0; 598 599 if(a->picture.data[0]) 600 avctx->release_buffer(avctx, &a->picture); 601 602 return 0; 603} 604 605AVCodec ff_asv1_decoder = { 606 .name = "asv1", 607 .type = AVMEDIA_TYPE_VIDEO, 608 .id = CODEC_ID_ASV1, 609 .priv_data_size = sizeof(ASV1Context), 610 .init = decode_init, 611 .close = decode_end, 612 .decode = decode_frame, 613 .capabilities = CODEC_CAP_DR1, 614 .long_name= NULL_IF_CONFIG_SMALL("ASUS V1"), 615}; 616 617AVCodec ff_asv2_decoder = { 618 .name = "asv2", 619 .type = AVMEDIA_TYPE_VIDEO, 620 .id = CODEC_ID_ASV2, 621 .priv_data_size = sizeof(ASV1Context), 622 .init = decode_init, 623 .close = decode_end, 624 .decode = decode_frame, 625 .capabilities = CODEC_CAP_DR1, 626 .long_name= NULL_IF_CONFIG_SMALL("ASUS V2"), 627}; 628 629#if CONFIG_ASV1_ENCODER 630AVCodec ff_asv1_encoder = { 631 .name = "asv1", 632 .type = AVMEDIA_TYPE_VIDEO, 633 .id = CODEC_ID_ASV1, 634 .priv_data_size = sizeof(ASV1Context), 635 .init = encode_init, 636 .encode = encode_frame, 637 //encode_end, 638 .pix_fmts= (const enum PixelFormat[]){PIX_FMT_YUV420P, PIX_FMT_NONE}, 639 .long_name= NULL_IF_CONFIG_SMALL("ASUS V1"), 640}; 641#endif 642 643#if CONFIG_ASV2_ENCODER 644AVCodec ff_asv2_encoder = { 645 .name = "asv2", 646 .type = AVMEDIA_TYPE_VIDEO, 647 .id = CODEC_ID_ASV2, 648 .priv_data_size = sizeof(ASV1Context), 649 .init = encode_init, 650 .encode = encode_frame, 651 //encode_end, 652 .pix_fmts= (const enum PixelFormat[]){PIX_FMT_YUV420P, PIX_FMT_NONE}, 653 .long_name= NULL_IF_CONFIG_SMALL("ASUS V2"), 654}; 655#endif 656