3 * Copyright (c) 2000, 2001 Fabrice Bellard
4 * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
6 * This file is part of FFmpeg.
8 * FFmpeg is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
13 * FFmpeg is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with FFmpeg; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
32 #include "mpegvideo.h"
33 #include "libavutil/avassert.h"
36 #include "mpeg12data.h"
37 #include "mpeg12decdata.h"
38 #include "bytestream.h"
39 #include "vdpau_internal.h"
40 #include "xvmc_internal.h"
48 #define MBINCR_VLC_BITS 9
49 #define MB_PAT_VLC_BITS 9
50 #define MB_PTYPE_VLC_BITS 6
51 #define MB_BTYPE_VLC_BITS 6
55 /* as H.263, but only 17 codes */
56 static int mpeg_decode_motion(MpegEncContext *s, int fcode, int pred)
58 int code, sign, val, shift;
60 code = get_vlc2(&s->gb, mv_vlc.table, MV_VLC_BITS, 2);
68 sign = get_bits1(&s->gb);
72 val = (val - 1) << shift;
73 val |= get_bits(&s->gb, shift);
81 return sign_extend(val, 5 + shift);
84 static inline int mpeg1_decode_block_intra(MpegEncContext *s, DCTELEM *block, int n)
86 int level, dc, diff, i, j, run;
88 RLTable *rl = &ff_rl_mpeg1;
89 uint8_t * const scantable = s->intra_scantable.permutated;
90 const uint16_t *quant_matrix = s->intra_matrix;
91 const int qscale = s->qscale;
94 component = (n <= 3 ? 0 : n - 4 + 1);
95 diff = decode_dc(&s->gb, component);
98 dc = s->last_dc[component];
100 s->last_dc[component] = dc;
101 block[0] = dc * quant_matrix[0];
102 av_dlog(s->avctx, "dc=%d diff=%d\n", dc, diff);
105 OPEN_READER(re, &s->gb);
106 /* now quantify & encode AC coefficients */
108 UPDATE_CACHE(re, &s->gb);
109 GET_RL_VLC(level, run, re, &s->gb, rl->rl_vlc[0], TEX_VLC_BITS, 2, 0);
113 } else if (level != 0) {
116 level = (level * qscale * quant_matrix[j]) >> 4;
117 level = (level - 1) | 1;
118 level = (level ^ SHOW_SBITS(re, &s->gb, 1)) - SHOW_SBITS(re, &s->gb, 1);
119 LAST_SKIP_BITS(re, &s->gb, 1);
122 run = SHOW_UBITS(re, &s->gb, 6) + 1; LAST_SKIP_BITS(re, &s->gb, 6);
123 UPDATE_CACHE(re, &s->gb);
124 level = SHOW_SBITS(re, &s->gb, 8); SKIP_BITS(re, &s->gb, 8);
126 level = SHOW_UBITS(re, &s->gb, 8) - 256; LAST_SKIP_BITS(re, &s->gb, 8);
127 } else if (level == 0) {
128 level = SHOW_UBITS(re, &s->gb, 8) ; LAST_SKIP_BITS(re, &s->gb, 8);
134 level = (level * qscale * quant_matrix[j]) >> 4;
135 level = (level - 1) | 1;
138 level = (level * qscale * quant_matrix[j]) >> 4;
139 level = (level - 1) | 1;
143 av_log(s->avctx, AV_LOG_ERROR, "ac-tex damaged at %d %d\n", s->mb_x, s->mb_y);
149 CLOSE_READER(re, &s->gb);
151 s->block_last_index[n] = i;
155 int ff_mpeg1_decode_block_intra(MpegEncContext *s, DCTELEM *block, int n)
157 return mpeg1_decode_block_intra(s, block, n);
160 static inline int mpeg1_decode_block_inter(MpegEncContext *s, DCTELEM *block, int n)
162 int level, i, j, run;
163 RLTable *rl = &ff_rl_mpeg1;
164 uint8_t * const scantable = s->intra_scantable.permutated;
165 const uint16_t *quant_matrix = s->inter_matrix;
166 const int qscale = s->qscale;
169 OPEN_READER(re, &s->gb);
171 // special case for first coefficient, no need to add second VLC table
172 UPDATE_CACHE(re, &s->gb);
173 if (((int32_t)GET_CACHE(re, &s->gb)) < 0) {
174 level = (3 * qscale * quant_matrix[0]) >> 5;
175 level = (level - 1) | 1;
176 if (GET_CACHE(re, &s->gb) & 0x40000000)
180 SKIP_BITS(re, &s->gb, 2);
181 if (((int32_t)GET_CACHE(re, &s->gb)) <= (int32_t)0xBFFFFFFF)
184 /* now quantify & encode AC coefficients */
186 GET_RL_VLC(level, run, re, &s->gb, rl->rl_vlc[0], TEX_VLC_BITS, 2, 0);
191 level = ((level * 2 + 1) * qscale * quant_matrix[j]) >> 5;
192 level = (level - 1) | 1;
193 level = (level ^ SHOW_SBITS(re, &s->gb, 1)) - SHOW_SBITS(re, &s->gb, 1);
194 SKIP_BITS(re, &s->gb, 1);
197 run = SHOW_UBITS(re, &s->gb, 6) + 1; LAST_SKIP_BITS(re, &s->gb, 6);
198 UPDATE_CACHE(re, &s->gb);
199 level = SHOW_SBITS(re, &s->gb, 8); SKIP_BITS(re, &s->gb, 8);
201 level = SHOW_UBITS(re, &s->gb, 8) - 256; SKIP_BITS(re, &s->gb, 8);
202 } else if (level == 0) {
203 level = SHOW_UBITS(re, &s->gb, 8) ; SKIP_BITS(re, &s->gb, 8);
209 level = ((level * 2 + 1) * qscale * quant_matrix[j]) >> 5;
210 level = (level - 1) | 1;
213 level = ((level * 2 + 1) * qscale * quant_matrix[j]) >> 5;
214 level = (level - 1) | 1;
218 av_log(s->avctx, AV_LOG_ERROR, "ac-tex damaged at %d %d\n", s->mb_x, s->mb_y);
223 if (((int32_t)GET_CACHE(re, &s->gb)) <= (int32_t)0xBFFFFFFF)
225 UPDATE_CACHE(re, &s->gb);
228 LAST_SKIP_BITS(re, &s->gb, 2);
229 CLOSE_READER(re, &s->gb);
231 s->block_last_index[n] = i;
235 static inline int mpeg1_fast_decode_block_inter(MpegEncContext *s, DCTELEM *block, int n)
237 int level, i, j, run;
238 RLTable *rl = &ff_rl_mpeg1;
239 uint8_t * const scantable = s->intra_scantable.permutated;
240 const int qscale = s->qscale;
243 OPEN_READER(re, &s->gb);
245 // special case for first coefficient, no need to add second VLC table
246 UPDATE_CACHE(re, &s->gb);
247 if (((int32_t)GET_CACHE(re, &s->gb)) < 0) {
248 level = (3 * qscale) >> 1;
249 level = (level - 1) | 1;
250 if (GET_CACHE(re, &s->gb) & 0x40000000)
254 SKIP_BITS(re, &s->gb, 2);
255 if (((int32_t)GET_CACHE(re, &s->gb)) <= (int32_t)0xBFFFFFFF)
259 /* now quantify & encode AC coefficients */
261 GET_RL_VLC(level, run, re, &s->gb, rl->rl_vlc[0], TEX_VLC_BITS, 2, 0);
266 level = ((level * 2 + 1) * qscale) >> 1;
267 level = (level - 1) | 1;
268 level = (level ^ SHOW_SBITS(re, &s->gb, 1)) - SHOW_SBITS(re, &s->gb, 1);
269 SKIP_BITS(re, &s->gb, 1);
272 run = SHOW_UBITS(re, &s->gb, 6)+1; LAST_SKIP_BITS(re, &s->gb, 6);
273 UPDATE_CACHE(re, &s->gb);
274 level = SHOW_SBITS(re, &s->gb, 8); SKIP_BITS(re, &s->gb, 8);
276 level = SHOW_UBITS(re, &s->gb, 8) - 256; SKIP_BITS(re, &s->gb, 8);
277 } else if (level == 0) {
278 level = SHOW_UBITS(re, &s->gb, 8) ; SKIP_BITS(re, &s->gb, 8);
284 level = ((level * 2 + 1) * qscale) >> 1;
285 level = (level - 1) | 1;
288 level = ((level * 2 + 1) * qscale) >> 1;
289 level = (level - 1) | 1;
294 if (((int32_t)GET_CACHE(re, &s->gb)) <= (int32_t)0xBFFFFFFF)
296 UPDATE_CACHE(re, &s->gb);
299 LAST_SKIP_BITS(re, &s->gb, 2);
300 CLOSE_READER(re, &s->gb);
302 s->block_last_index[n] = i;
307 static inline int mpeg2_decode_block_non_intra(MpegEncContext *s, DCTELEM *block, int n)
309 int level, i, j, run;
310 RLTable *rl = &ff_rl_mpeg1;
311 uint8_t * const scantable = s->intra_scantable.permutated;
312 const uint16_t *quant_matrix;
313 const int qscale = s->qscale;
319 OPEN_READER(re, &s->gb);
322 quant_matrix = s->inter_matrix;
324 quant_matrix = s->chroma_inter_matrix;
326 // special case for first coefficient, no need to add second VLC table
327 UPDATE_CACHE(re, &s->gb);
328 if (((int32_t)GET_CACHE(re, &s->gb)) < 0) {
329 level= (3 * qscale * quant_matrix[0]) >> 5;
330 if (GET_CACHE(re, &s->gb) & 0x40000000)
335 SKIP_BITS(re, &s->gb, 2);
336 if (((int32_t)GET_CACHE(re, &s->gb)) <= (int32_t)0xBFFFFFFF)
340 /* now quantify & encode AC coefficients */
342 GET_RL_VLC(level, run, re, &s->gb, rl->rl_vlc[0], TEX_VLC_BITS, 2, 0);
347 level = ((level * 2 + 1) * qscale * quant_matrix[j]) >> 5;
348 level = (level ^ SHOW_SBITS(re, &s->gb, 1)) - SHOW_SBITS(re, &s->gb, 1);
349 SKIP_BITS(re, &s->gb, 1);
352 run = SHOW_UBITS(re, &s->gb, 6) + 1; LAST_SKIP_BITS(re, &s->gb, 6);
353 UPDATE_CACHE(re, &s->gb);
354 level = SHOW_SBITS(re, &s->gb, 12); SKIP_BITS(re, &s->gb, 12);
359 level = ((-level * 2 + 1) * qscale * quant_matrix[j]) >> 5;
362 level = ((level * 2 + 1) * qscale * quant_matrix[j]) >> 5;
366 av_log(s->avctx, AV_LOG_ERROR, "ac-tex damaged at %d %d\n", s->mb_x, s->mb_y);
372 if (((int32_t)GET_CACHE(re, &s->gb)) <= (int32_t)0xBFFFFFFF)
374 UPDATE_CACHE(re, &s->gb);
377 LAST_SKIP_BITS(re, &s->gb, 2);
378 CLOSE_READER(re, &s->gb);
380 block[63] ^= (mismatch & 1);
382 s->block_last_index[n] = i;
386 static inline int mpeg2_fast_decode_block_non_intra(MpegEncContext *s,
387 DCTELEM *block, int n)
389 int level, i, j, run;
390 RLTable *rl = &ff_rl_mpeg1;
391 uint8_t * const scantable = s->intra_scantable.permutated;
392 const int qscale = s->qscale;
393 OPEN_READER(re, &s->gb);
396 // special case for first coefficient, no need to add second VLC table
397 UPDATE_CACHE(re, &s->gb);
398 if (((int32_t)GET_CACHE(re, &s->gb)) < 0) {
399 level = (3 * qscale) >> 1;
400 if (GET_CACHE(re, &s->gb) & 0x40000000)
404 SKIP_BITS(re, &s->gb, 2);
405 if (((int32_t)GET_CACHE(re, &s->gb)) <= (int32_t)0xBFFFFFFF)
409 /* now quantify & encode AC coefficients */
411 GET_RL_VLC(level, run, re, &s->gb, rl->rl_vlc[0], TEX_VLC_BITS, 2, 0);
416 level = ((level * 2 + 1) * qscale) >> 1;
417 level = (level ^ SHOW_SBITS(re, &s->gb, 1)) - SHOW_SBITS(re, &s->gb, 1);
418 SKIP_BITS(re, &s->gb, 1);
421 run = SHOW_UBITS(re, &s->gb, 6) + 1; LAST_SKIP_BITS(re, &s->gb, 6);
422 UPDATE_CACHE(re, &s->gb);
423 level = SHOW_SBITS(re, &s->gb, 12); SKIP_BITS(re, &s->gb, 12);
428 level = ((-level * 2 + 1) * qscale) >> 1;
431 level = ((level * 2 + 1) * qscale) >> 1;
436 if (((int32_t)GET_CACHE(re, &s->gb)) <= (int32_t)0xBFFFFFFF)
438 UPDATE_CACHE(re, &s->gb);
441 LAST_SKIP_BITS(re, &s->gb, 2);
442 CLOSE_READER(re, &s->gb);
443 s->block_last_index[n] = i;
448 static inline int mpeg2_decode_block_intra(MpegEncContext *s, DCTELEM *block, int n)
450 int level, dc, diff, i, j, run;
453 uint8_t * const scantable = s->intra_scantable.permutated;
454 const uint16_t *quant_matrix;
455 const int qscale = s->qscale;
460 quant_matrix = s->intra_matrix;
463 quant_matrix = s->chroma_intra_matrix;
464 component = (n & 1) + 1;
466 diff = decode_dc(&s->gb, component);
469 dc = s->last_dc[component];
471 s->last_dc[component] = dc;
472 block[0] = dc << (3 - s->intra_dc_precision);
473 av_dlog(s->avctx, "dc=%d\n", block[0]);
474 mismatch = block[0] ^ 1;
476 if (s->intra_vlc_format)
482 OPEN_READER(re, &s->gb);
483 /* now quantify & encode AC coefficients */
485 UPDATE_CACHE(re, &s->gb);
486 GET_RL_VLC(level, run, re, &s->gb, rl->rl_vlc[0], TEX_VLC_BITS, 2, 0);
490 } else if (level != 0) {
493 level = (level * qscale * quant_matrix[j]) >> 4;
494 level = (level ^ SHOW_SBITS(re, &s->gb, 1)) - SHOW_SBITS(re, &s->gb, 1);
495 LAST_SKIP_BITS(re, &s->gb, 1);
498 run = SHOW_UBITS(re, &s->gb, 6) + 1; LAST_SKIP_BITS(re, &s->gb, 6);
499 UPDATE_CACHE(re, &s->gb);
500 level = SHOW_SBITS(re, &s->gb, 12); SKIP_BITS(re, &s->gb, 12);
504 level = (-level * qscale * quant_matrix[j]) >> 4;
507 level = (level * qscale * quant_matrix[j]) >> 4;
511 av_log(s->avctx, AV_LOG_ERROR, "ac-tex damaged at %d %d\n", s->mb_x, s->mb_y);
518 CLOSE_READER(re, &s->gb);
520 block[63] ^= mismatch & 1;
522 s->block_last_index[n] = i;
526 static inline int mpeg2_fast_decode_block_intra(MpegEncContext *s, DCTELEM *block, int n)
528 int level, dc, diff, j, run;
531 uint8_t * scantable = s->intra_scantable.permutated;
532 const uint16_t *quant_matrix;
533 const int qscale = s->qscale;
537 quant_matrix = s->intra_matrix;
540 quant_matrix = s->chroma_intra_matrix;
541 component = (n & 1) + 1;
543 diff = decode_dc(&s->gb, component);
546 dc = s->last_dc[component];
548 s->last_dc[component] = dc;
549 block[0] = dc << (3 - s->intra_dc_precision);
550 if (s->intra_vlc_format)
556 OPEN_READER(re, &s->gb);
557 /* now quantify & encode AC coefficients */
559 UPDATE_CACHE(re, &s->gb);
560 GET_RL_VLC(level, run, re, &s->gb, rl->rl_vlc[0], TEX_VLC_BITS, 2, 0);
564 } else if (level != 0) {
567 level = (level * qscale * quant_matrix[j]) >> 4;
568 level = (level ^ SHOW_SBITS(re, &s->gb, 1)) - SHOW_SBITS(re, &s->gb, 1);
569 LAST_SKIP_BITS(re, &s->gb, 1);
572 run = SHOW_UBITS(re, &s->gb, 6) + 1; LAST_SKIP_BITS(re, &s->gb, 6);
573 UPDATE_CACHE(re, &s->gb);
574 level = SHOW_SBITS(re, &s->gb, 12); SKIP_BITS(re, &s->gb, 12);
578 level = (-level * qscale * quant_matrix[j]) >> 4;
581 level = (level * qscale * quant_matrix[j]) >> 4;
587 CLOSE_READER(re, &s->gb);
590 s->block_last_index[n] = scantable - s->intra_scantable.permutated;
594 uint8_t ff_mpeg12_static_rl_table_store[2][2][2*MAX_RUN + MAX_LEVEL + 3];
596 #define INIT_2D_VLC_RL(rl, static_size)\
598 static RL_VLC_ELEM rl_vlc_table[static_size];\
599 INIT_VLC_STATIC(&rl.vlc, TEX_VLC_BITS, rl.n + 2,\
600 &rl.table_vlc[0][1], 4, 2,\
601 &rl.table_vlc[0][0], 4, 2, static_size);\
603 rl.rl_vlc[0] = rl_vlc_table;\
604 init_2d_vlc_rl(&rl);\
607 static void init_2d_vlc_rl(RLTable *rl)
611 for (i = 0; i < rl->vlc.table_size; i++) {
612 int code = rl->vlc.table[i][0];
613 int len = rl->vlc.table[i][1];
616 if (len == 0) { // illegal code
619 } else if (len<0) { //more bits needed
623 if (code == rl->n) { //esc
626 } else if (code == rl->n+1) { //eob
630 run = rl->table_run [code] + 1;
631 level = rl->table_level[code];
634 rl->rl_vlc[0][i].len = len;
635 rl->rl_vlc[0][i].level = level;
636 rl->rl_vlc[0][i].run = run;
640 void ff_mpeg12_common_init(MpegEncContext *s)
643 s->y_dc_scale_table =
644 s->c_dc_scale_table = ff_mpeg2_dc_scale_table[s->intra_dc_precision];
648 void ff_mpeg1_clean_buffers(MpegEncContext *s)
650 s->last_dc[0] = 1 << (7 + s->intra_dc_precision);
651 s->last_dc[1] = s->last_dc[0];
652 s->last_dc[2] = s->last_dc[0];
653 memset(s->last_mv, 0, sizeof(s->last_mv));
657 /******************************************/
661 VLC ff_dc_chroma_vlc;
663 static VLC mbincr_vlc;
664 static VLC mb_ptype_vlc;
665 static VLC mb_btype_vlc;
666 static VLC mb_pat_vlc;
668 av_cold void ff_mpeg12_init_vlcs(void)
675 INIT_VLC_STATIC(&ff_dc_lum_vlc, DC_VLC_BITS, 12,
676 ff_mpeg12_vlc_dc_lum_bits, 1, 1,
677 ff_mpeg12_vlc_dc_lum_code, 2, 2, 512);
678 INIT_VLC_STATIC(&ff_dc_chroma_vlc, DC_VLC_BITS, 12,
679 ff_mpeg12_vlc_dc_chroma_bits, 1, 1,
680 ff_mpeg12_vlc_dc_chroma_code, 2, 2, 514);
681 INIT_VLC_STATIC(&mv_vlc, MV_VLC_BITS, 17,
682 &ff_mpeg12_mbMotionVectorTable[0][1], 2, 1,
683 &ff_mpeg12_mbMotionVectorTable[0][0], 2, 1, 518);
684 INIT_VLC_STATIC(&mbincr_vlc, MBINCR_VLC_BITS, 36,
685 &ff_mpeg12_mbAddrIncrTable[0][1], 2, 1,
686 &ff_mpeg12_mbAddrIncrTable[0][0], 2, 1, 538);
687 INIT_VLC_STATIC(&mb_pat_vlc, MB_PAT_VLC_BITS, 64,
688 &ff_mpeg12_mbPatTable[0][1], 2, 1,
689 &ff_mpeg12_mbPatTable[0][0], 2, 1, 512);
691 INIT_VLC_STATIC(&mb_ptype_vlc, MB_PTYPE_VLC_BITS, 7,
692 &table_mb_ptype[0][1], 2, 1,
693 &table_mb_ptype[0][0], 2, 1, 64);
694 INIT_VLC_STATIC(&mb_btype_vlc, MB_BTYPE_VLC_BITS, 11,
695 &table_mb_btype[0][1], 2, 1,
696 &table_mb_btype[0][0], 2, 1, 64);
697 init_rl(&ff_rl_mpeg1, ff_mpeg12_static_rl_table_store[0]);
698 init_rl(&ff_rl_mpeg2, ff_mpeg12_static_rl_table_store[1]);
700 INIT_2D_VLC_RL(ff_rl_mpeg1, 680);
701 INIT_2D_VLC_RL(ff_rl_mpeg2, 674);
705 static inline int get_dmv(MpegEncContext *s)
707 if (get_bits1(&s->gb))
708 return 1 - (get_bits1(&s->gb) << 1);
713 static inline int get_qscale(MpegEncContext *s)
715 int qscale = get_bits(&s->gb, 5);
716 if (s->q_scale_type) {
717 return non_linear_qscale[qscale];
723 static void exchange_uv(MpegEncContext *s)
728 s->pblocks[4] = s->pblocks[5];
732 /* motion type (for MPEG-2) */
738 static int mpeg_decode_mb(MpegEncContext *s, DCTELEM block[12][64])
740 int i, j, k, cbp, val, mb_type, motion_type;
741 const int mb_block_count = 4 + (1 << s->chroma_format);
743 av_dlog(s->avctx, "decode_mb: x=%d y=%d\n", s->mb_x, s->mb_y);
745 assert(s->mb_skipped == 0);
747 if (s->mb_skip_run-- != 0) {
748 if (s->pict_type == AV_PICTURE_TYPE_P) {
750 s->current_picture.f.mb_type[s->mb_x + s->mb_y * s->mb_stride] = MB_TYPE_SKIP | MB_TYPE_L0 | MB_TYPE_16x16;
755 mb_type = s->current_picture.f.mb_type[s->mb_x + s->mb_y * s->mb_stride - 1];
757 mb_type = s->current_picture.f.mb_type[s->mb_width + (s->mb_y - 1) * s->mb_stride - 1]; // FIXME not sure if this is allowed in MPEG at all
758 if (IS_INTRA(mb_type))
760 s->current_picture.f.mb_type[s->mb_x + s->mb_y*s->mb_stride] =
761 mb_type | MB_TYPE_SKIP;
762 // assert(s->current_picture.f.mb_type[s->mb_x + s->mb_y * s->mb_stride - 1] & (MB_TYPE_16x16 | MB_TYPE_16x8));
764 if ((s->mv[0][0][0] | s->mv[0][0][1] | s->mv[1][0][0] | s->mv[1][0][1]) == 0)
771 switch (s->pict_type) {
773 case AV_PICTURE_TYPE_I:
774 if (get_bits1(&s->gb) == 0) {
775 if (get_bits1(&s->gb) == 0) {
776 av_log(s->avctx, AV_LOG_ERROR, "invalid mb type in I Frame at %d %d\n", s->mb_x, s->mb_y);
779 mb_type = MB_TYPE_QUANT | MB_TYPE_INTRA;
781 mb_type = MB_TYPE_INTRA;
784 case AV_PICTURE_TYPE_P:
785 mb_type = get_vlc2(&s->gb, mb_ptype_vlc.table, MB_PTYPE_VLC_BITS, 1);
787 av_log(s->avctx, AV_LOG_ERROR, "invalid mb type in P Frame at %d %d\n", s->mb_x, s->mb_y);
790 mb_type = ptype2mb_type[mb_type];
792 case AV_PICTURE_TYPE_B:
793 mb_type = get_vlc2(&s->gb, mb_btype_vlc.table, MB_BTYPE_VLC_BITS, 1);
795 av_log(s->avctx, AV_LOG_ERROR, "invalid mb type in B Frame at %d %d\n", s->mb_x, s->mb_y);
798 mb_type = btype2mb_type[mb_type];
801 av_dlog(s->avctx, "mb_type=%x\n", mb_type);
802 // motion_type = 0; /* avoid warning */
803 if (IS_INTRA(mb_type)) {
804 s->dsp.clear_blocks(s->block[0]);
806 if (!s->chroma_y_shift) {
807 s->dsp.clear_blocks(s->block[6]);
810 /* compute DCT type */
811 if (s->picture_structure == PICT_FRAME && // FIXME add an interlaced_dct coded var?
812 !s->frame_pred_frame_dct) {
813 s->interlaced_dct = get_bits1(&s->gb);
816 if (IS_QUANT(mb_type))
817 s->qscale = get_qscale(s);
819 if (s->concealment_motion_vectors) {
820 /* just parse them */
821 if (s->picture_structure != PICT_FRAME)
822 skip_bits1(&s->gb); /* field select */
824 s->mv[0][0][0]= s->last_mv[0][0][0]= s->last_mv[0][1][0] =
825 mpeg_decode_motion(s, s->mpeg_f_code[0][0], s->last_mv[0][0][0]);
826 s->mv[0][0][1]= s->last_mv[0][0][1]= s->last_mv[0][1][1] =
827 mpeg_decode_motion(s, s->mpeg_f_code[0][1], s->last_mv[0][0][1]);
829 skip_bits1(&s->gb); /* marker */
831 memset(s->last_mv, 0, sizeof(s->last_mv)); /* reset mv prediction */
833 // if 1, we memcpy blocks in xvmcvideo
834 if (CONFIG_MPEG_XVMC_DECODER && s->avctx->xvmc_acceleration > 1) {
835 ff_xvmc_pack_pblocks(s, -1); // inter are always full blocks
841 if (s->codec_id == CODEC_ID_MPEG2VIDEO) {
842 if (s->flags2 & CODEC_FLAG2_FAST) {
843 for (i = 0; i < 6; i++) {
844 mpeg2_fast_decode_block_intra(s, *s->pblocks[i], i);
847 for (i = 0; i < mb_block_count; i++) {
848 if (mpeg2_decode_block_intra(s, *s->pblocks[i], i) < 0)
853 for (i = 0; i < 6; i++) {
854 if (mpeg1_decode_block_intra(s, *s->pblocks[i], i) < 0)
859 if (mb_type & MB_TYPE_ZERO_MV) {
860 assert(mb_type & MB_TYPE_CBP);
862 s->mv_dir = MV_DIR_FORWARD;
863 if (s->picture_structure == PICT_FRAME) {
864 if (!s->frame_pred_frame_dct)
865 s->interlaced_dct = get_bits1(&s->gb);
866 s->mv_type = MV_TYPE_16X16;
868 s->mv_type = MV_TYPE_FIELD;
869 mb_type |= MB_TYPE_INTERLACED;
870 s->field_select[0][0] = s->picture_structure - 1;
873 if (IS_QUANT(mb_type))
874 s->qscale = get_qscale(s);
876 s->last_mv[0][0][0] = 0;
877 s->last_mv[0][0][1] = 0;
878 s->last_mv[0][1][0] = 0;
879 s->last_mv[0][1][1] = 0;
883 assert(mb_type & MB_TYPE_L0L1);
884 // FIXME decide if MBs in field pictures are MB_TYPE_INTERLACED
885 /* get additional motion vector type */
886 if (s->frame_pred_frame_dct)
887 motion_type = MT_FRAME;
889 motion_type = get_bits(&s->gb, 2);
890 if (s->picture_structure == PICT_FRAME && HAS_CBP(mb_type))
891 s->interlaced_dct = get_bits1(&s->gb);
894 if (IS_QUANT(mb_type))
895 s->qscale = get_qscale(s);
898 s->mv_dir = (mb_type >> 13) & 3;
899 av_dlog(s->avctx, "motion_type=%d\n", motion_type);
900 switch (motion_type) {
901 case MT_FRAME: /* or MT_16X8 */
902 if (s->picture_structure == PICT_FRAME) {
903 mb_type |= MB_TYPE_16x16;
904 s->mv_type = MV_TYPE_16X16;
905 for (i = 0; i < 2; i++) {
906 if (USES_LIST(mb_type, i)) {
908 s->mv[i][0][0]= s->last_mv[i][0][0]= s->last_mv[i][1][0] =
909 mpeg_decode_motion(s, s->mpeg_f_code[i][0], s->last_mv[i][0][0]);
910 s->mv[i][0][1]= s->last_mv[i][0][1]= s->last_mv[i][1][1] =
911 mpeg_decode_motion(s, s->mpeg_f_code[i][1], s->last_mv[i][0][1]);
912 /* full_pel: only for MPEG-1 */
913 if (s->full_pel[i]) {
914 s->mv[i][0][0] <<= 1;
915 s->mv[i][0][1] <<= 1;
920 mb_type |= MB_TYPE_16x8 | MB_TYPE_INTERLACED;
921 s->mv_type = MV_TYPE_16X8;
922 for (i = 0; i < 2; i++) {
923 if (USES_LIST(mb_type, i)) {
925 for (j = 0; j < 2; j++) {
926 s->field_select[i][j] = get_bits1(&s->gb);
927 for (k = 0; k < 2; k++) {
928 val = mpeg_decode_motion(s, s->mpeg_f_code[i][k],
929 s->last_mv[i][j][k]);
930 s->last_mv[i][j][k] = val;
931 s->mv[i][j][k] = val;
939 s->mv_type = MV_TYPE_FIELD;
940 if (s->picture_structure == PICT_FRAME) {
941 mb_type |= MB_TYPE_16x8 | MB_TYPE_INTERLACED;
942 for (i = 0; i < 2; i++) {
943 if (USES_LIST(mb_type, i)) {
944 for (j = 0; j < 2; j++) {
945 s->field_select[i][j] = get_bits1(&s->gb);
946 val = mpeg_decode_motion(s, s->mpeg_f_code[i][0],
947 s->last_mv[i][j][0]);
948 s->last_mv[i][j][0] = val;
949 s->mv[i][j][0] = val;
950 av_dlog(s->avctx, "fmx=%d\n", val);
951 val = mpeg_decode_motion(s, s->mpeg_f_code[i][1],
952 s->last_mv[i][j][1] >> 1);
953 s->last_mv[i][j][1] = val << 1;
954 s->mv[i][j][1] = val;
955 av_dlog(s->avctx, "fmy=%d\n", val);
960 av_assert0(!s->progressive_sequence);
961 mb_type |= MB_TYPE_16x16 | MB_TYPE_INTERLACED;
962 for (i = 0; i < 2; i++) {
963 if (USES_LIST(mb_type, i)) {
964 s->field_select[i][0] = get_bits1(&s->gb);
965 for (k = 0; k < 2; k++) {
966 val = mpeg_decode_motion(s, s->mpeg_f_code[i][k],
967 s->last_mv[i][0][k]);
968 s->last_mv[i][0][k] = val;
969 s->last_mv[i][1][k] = val;
970 s->mv[i][0][k] = val;
977 if(s->progressive_sequence){
978 av_log(s->avctx, AV_LOG_ERROR, "MT_DMV in progressive_sequence\n");
981 s->mv_type = MV_TYPE_DMV;
982 for (i = 0; i < 2; i++) {
983 if (USES_LIST(mb_type, i)) {
984 int dmx, dmy, mx, my, m;
985 const int my_shift = s->picture_structure == PICT_FRAME;
987 mx = mpeg_decode_motion(s, s->mpeg_f_code[i][0],
988 s->last_mv[i][0][0]);
989 s->last_mv[i][0][0] = mx;
990 s->last_mv[i][1][0] = mx;
992 my = mpeg_decode_motion(s, s->mpeg_f_code[i][1],
993 s->last_mv[i][0][1] >> my_shift);
997 s->last_mv[i][0][1] = my << my_shift;
998 s->last_mv[i][1][1] = my << my_shift;
1000 s->mv[i][0][0] = mx;
1001 s->mv[i][0][1] = my;
1002 s->mv[i][1][0] = mx; // not used
1003 s->mv[i][1][1] = my; // not used
1005 if (s->picture_structure == PICT_FRAME) {
1006 mb_type |= MB_TYPE_16x16 | MB_TYPE_INTERLACED;
1008 // m = 1 + 2 * s->top_field_first;
1009 m = s->top_field_first ? 1 : 3;
1011 /* top -> top pred */
1012 s->mv[i][2][0] = ((mx * m + (mx > 0)) >> 1) + dmx;
1013 s->mv[i][2][1] = ((my * m + (my > 0)) >> 1) + dmy - 1;
1015 s->mv[i][3][0] = ((mx * m + (mx > 0)) >> 1) + dmx;
1016 s->mv[i][3][1] = ((my * m + (my > 0)) >> 1) + dmy + 1;
1018 mb_type |= MB_TYPE_16x16;
1020 s->mv[i][2][0] = ((mx + (mx > 0)) >> 1) + dmx;
1021 s->mv[i][2][1] = ((my + (my > 0)) >> 1) + dmy;
1022 if (s->picture_structure == PICT_TOP_FIELD)
1031 av_log(s->avctx, AV_LOG_ERROR, "00 motion_type at %d %d\n", s->mb_x, s->mb_y);
1037 if (HAS_CBP(mb_type)) {
1038 s->dsp.clear_blocks(s->block[0]);
1040 cbp = get_vlc2(&s->gb, mb_pat_vlc.table, MB_PAT_VLC_BITS, 1);
1041 if (mb_block_count > 6) {
1042 cbp <<= mb_block_count - 6;
1043 cbp |= get_bits(&s->gb, mb_block_count - 6);
1044 s->dsp.clear_blocks(s->block[6]);
1047 av_log(s->avctx, AV_LOG_ERROR, "invalid cbp at %d %d\n", s->mb_x, s->mb_y);
1051 //if 1, we memcpy blocks in xvmcvideo
1052 if (CONFIG_MPEG_XVMC_DECODER && s->avctx->xvmc_acceleration > 1) {
1053 ff_xvmc_pack_pblocks(s, cbp);
1059 if (s->codec_id == CODEC_ID_MPEG2VIDEO) {
1060 if (s->flags2 & CODEC_FLAG2_FAST) {
1061 for (i = 0; i < 6; i++) {
1063 mpeg2_fast_decode_block_non_intra(s, *s->pblocks[i], i);
1065 s->block_last_index[i] = -1;
1070 cbp <<= 12-mb_block_count;
1072 for (i = 0; i < mb_block_count; i++) {
1073 if (cbp & (1 << 11)) {
1074 if (mpeg2_decode_block_non_intra(s, *s->pblocks[i], i) < 0)
1077 s->block_last_index[i] = -1;
1083 if (s->flags2 & CODEC_FLAG2_FAST) {
1084 for (i = 0; i < 6; i++) {
1086 mpeg1_fast_decode_block_inter(s, *s->pblocks[i], i);
1088 s->block_last_index[i] = -1;
1093 for (i = 0; i < 6; i++) {
1095 if (mpeg1_decode_block_inter(s, *s->pblocks[i], i) < 0)
1098 s->block_last_index[i] = -1;
1105 for (i = 0; i < 12; i++)
1106 s->block_last_index[i] = -1;
1110 s->current_picture.f.mb_type[s->mb_x + s->mb_y * s->mb_stride] = mb_type;
1115 static av_cold int mpeg_decode_init(AVCodecContext *avctx)
1117 Mpeg1Context *s = avctx->priv_data;
1118 MpegEncContext *s2 = &s->mpeg_enc_ctx;
1121 /* we need some permutation to store matrices,
1122 * until MPV_common_init() sets the real permutation. */
1123 for (i = 0; i < 64; i++)
1124 s2->dsp.idct_permutation[i]=i;
1126 MPV_decode_defaults(s2);
1128 s->mpeg_enc_ctx.avctx = avctx;
1129 s->mpeg_enc_ctx.flags = avctx->flags;
1130 s->mpeg_enc_ctx.flags2 = avctx->flags2;
1131 ff_mpeg12_common_init(&s->mpeg_enc_ctx);
1132 ff_mpeg12_init_vlcs();
1134 s->mpeg_enc_ctx_allocated = 0;
1135 s->mpeg_enc_ctx.picture_number = 0;
1136 s->repeat_field = 0;
1137 s->mpeg_enc_ctx.codec_id = avctx->codec->id;
1138 avctx->color_range = AVCOL_RANGE_MPEG;
1139 if (avctx->codec->id == CODEC_ID_MPEG1VIDEO)
1140 avctx->chroma_sample_location = AVCHROMA_LOC_CENTER;
1142 avctx->chroma_sample_location = AVCHROMA_LOC_LEFT;
1146 static int mpeg_decode_update_thread_context(AVCodecContext *avctx, const AVCodecContext *avctx_from)
1148 Mpeg1Context *ctx = avctx->priv_data, *ctx_from = avctx_from->priv_data;
1149 MpegEncContext *s = &ctx->mpeg_enc_ctx, *s1 = &ctx_from->mpeg_enc_ctx;
1152 if (avctx == avctx_from || !ctx_from->mpeg_enc_ctx_allocated || !s1->context_initialized)
1155 err = ff_mpeg_update_thread_context(avctx, avctx_from);
1156 if (err) return err;
1158 if (!ctx->mpeg_enc_ctx_allocated)
1159 memcpy(s + 1, s1 + 1, sizeof(Mpeg1Context) - sizeof(MpegEncContext));
1161 if (!(s->pict_type == AV_PICTURE_TYPE_B || s->low_delay))
1162 s->picture_number++;
1167 static void quant_matrix_rebuild(uint16_t *matrix, const uint8_t *old_perm,
1168 const uint8_t *new_perm)
1170 uint16_t temp_matrix[64];
1173 memcpy(temp_matrix, matrix, 64 * sizeof(uint16_t));
1175 for (i = 0; i < 64; i++) {
1176 matrix[new_perm[i]] = temp_matrix[old_perm[i]];
1180 static const enum PixelFormat mpeg1_hwaccel_pixfmt_list_420[] = {
1181 #if CONFIG_MPEG_XVMC_DECODER
1182 PIX_FMT_XVMC_MPEG2_IDCT,
1183 PIX_FMT_XVMC_MPEG2_MC,
1185 #if CONFIG_MPEG1_VDPAU_HWACCEL
1186 PIX_FMT_VDPAU_MPEG1,
1192 static const enum PixelFormat mpeg2_hwaccel_pixfmt_list_420[] = {
1193 #if CONFIG_MPEG_XVMC_DECODER
1194 PIX_FMT_XVMC_MPEG2_IDCT,
1195 PIX_FMT_XVMC_MPEG2_MC,
1197 #if CONFIG_MPEG2_VDPAU_HWACCEL
1198 PIX_FMT_VDPAU_MPEG2,
1200 #if CONFIG_MPEG2_DXVA2_HWACCEL
1203 #if CONFIG_MPEG2_VAAPI_HWACCEL
1210 static inline int uses_vdpau(AVCodecContext *avctx) {
1211 return avctx->pix_fmt == PIX_FMT_VDPAU_MPEG1 || avctx->pix_fmt == PIX_FMT_VDPAU_MPEG2;
1214 static enum PixelFormat mpeg_get_pixelformat(AVCodecContext *avctx)
1216 Mpeg1Context *s1 = avctx->priv_data;
1217 MpegEncContext *s = &s1->mpeg_enc_ctx;
1219 if(s->chroma_format < 2) {
1220 enum PixelFormat res;
1221 res = avctx->get_format(avctx,
1222 avctx->codec_id == CODEC_ID_MPEG1VIDEO ?
1223 mpeg1_hwaccel_pixfmt_list_420 :
1224 mpeg2_hwaccel_pixfmt_list_420);
1225 if (res != PIX_FMT_XVMC_MPEG2_IDCT && res != PIX_FMT_XVMC_MPEG2_MC) {
1226 avctx->xvmc_acceleration = 0;
1227 } else if (!avctx->xvmc_acceleration) {
1228 avctx->xvmc_acceleration = 2;
1231 } else if(s->chroma_format == 2)
1232 return PIX_FMT_YUV422P;
1234 return PIX_FMT_YUV444P;
1237 /* Call this function when we know all parameters.
1238 * It may be called in different places for MPEG-1 and MPEG-2. */
1239 static int mpeg_decode_postinit(AVCodecContext *avctx)
1241 Mpeg1Context *s1 = avctx->priv_data;
1242 MpegEncContext *s = &s1->mpeg_enc_ctx;
1243 uint8_t old_permutation[64];
1245 if ((s1->mpeg_enc_ctx_allocated == 0) ||
1246 avctx->coded_width != s->width ||
1247 avctx->coded_height != s->height ||
1248 s1->save_width != s->width ||
1249 s1->save_height != s->height ||
1250 s1->save_aspect_info != s->aspect_ratio_info ||
1251 s1->save_progressive_seq != s->progressive_sequence ||
1255 if (s1->mpeg_enc_ctx_allocated) {
1256 ParseContext pc = s->parse_context;
1257 s->parse_context.buffer = 0;
1259 s->parse_context = pc;
1262 if ((s->width == 0) || (s->height == 0))
1265 avcodec_set_dimensions(avctx, s->width, s->height);
1266 avctx->bit_rate = s->bit_rate;
1267 s1->save_aspect_info = s->aspect_ratio_info;
1268 s1->save_width = s->width;
1269 s1->save_height = s->height;
1270 s1->save_progressive_seq = s->progressive_sequence;
1272 /* low_delay may be forced, in this case we will have B-frames
1273 * that behave like P-frames. */
1274 avctx->has_b_frames = !(s->low_delay);
1276 assert((avctx->sub_id == 1) == (avctx->codec_id == CODEC_ID_MPEG1VIDEO));
1277 if (avctx->codec_id == CODEC_ID_MPEG1VIDEO) {
1279 avctx->time_base.den = avpriv_frame_rate_tab[s->frame_rate_index].num;
1280 avctx->time_base.num = avpriv_frame_rate_tab[s->frame_rate_index].den;
1282 avctx->sample_aspect_ratio = av_d2q(1.0/ff_mpeg1_aspect[s->aspect_ratio_info], 255);
1283 avctx->ticks_per_frame=1;
1286 av_reduce(&s->avctx->time_base.den,
1287 &s->avctx->time_base.num,
1288 avpriv_frame_rate_tab[s->frame_rate_index].num * s1->frame_rate_ext.num*2,
1289 avpriv_frame_rate_tab[s->frame_rate_index].den * s1->frame_rate_ext.den,
1291 avctx->ticks_per_frame = 2;
1293 if (s->aspect_ratio_info > 1) {
1295 av_mul_q(av_div_q(ff_mpeg2_aspect[s->aspect_ratio_info],
1296 (AVRational) {s1->pan_scan.width, s1->pan_scan.height}),
1297 (AVRational) {s->width, s->height});
1299 // we ignore the spec here and guess a bit as reality does not match the spec, see for example
1300 // res_change_ffmpeg_aspect.ts and sequence-display-aspect.mpg
1301 // issue1613, 621, 562
1302 if ((s1->pan_scan.width == 0) || (s1->pan_scan.height == 0) ||
1303 (av_cmp_q(dar, (AVRational) {4, 3}) && av_cmp_q(dar, (AVRational) {16, 9}))) {
1304 s->avctx->sample_aspect_ratio =
1305 av_div_q(ff_mpeg2_aspect[s->aspect_ratio_info],
1306 (AVRational) {s->width, s->height});
1308 s->avctx->sample_aspect_ratio =
1309 av_div_q(ff_mpeg2_aspect[s->aspect_ratio_info],
1310 (AVRational) {s1->pan_scan.width, s1->pan_scan.height});
1311 //issue1613 4/3 16/9 -> 16/9
1312 //res_change_ffmpeg_aspect.ts 4/3 225/44 ->4/3
1313 //widescreen-issue562.mpg 4/3 16/9 -> 16/9
1314 // s->avctx->sample_aspect_ratio = av_mul_q(s->avctx->sample_aspect_ratio, (AVRational) {s->width, s->height});
1315 //av_log(NULL, AV_LOG_ERROR, "A %d/%d\n", ff_mpeg2_aspect[s->aspect_ratio_info].num, ff_mpeg2_aspect[s->aspect_ratio_info].den);
1316 //av_log(NULL, AV_LOG_ERROR, "B %d/%d\n", s->avctx->sample_aspect_ratio.num, s->avctx->sample_aspect_ratio.den);
1319 s->avctx->sample_aspect_ratio =
1320 ff_mpeg2_aspect[s->aspect_ratio_info];
1324 avctx->pix_fmt = mpeg_get_pixelformat(avctx);
1325 avctx->hwaccel = ff_find_hwaccel(avctx->codec->id, avctx->pix_fmt);
1326 // until then pix_fmt may be changed right after codec init
1327 if (avctx->pix_fmt == PIX_FMT_XVMC_MPEG2_IDCT ||
1329 if (avctx->idct_algo == FF_IDCT_AUTO)
1330 avctx->idct_algo = FF_IDCT_SIMPLE;
1332 /* Quantization matrices may need reordering
1333 * if DCT permutation is changed. */
1334 memcpy(old_permutation, s->dsp.idct_permutation, 64 * sizeof(uint8_t));
1336 if (MPV_common_init(s) < 0)
1339 quant_matrix_rebuild(s->intra_matrix, old_permutation, s->dsp.idct_permutation);
1340 quant_matrix_rebuild(s->inter_matrix, old_permutation, s->dsp.idct_permutation);
1341 quant_matrix_rebuild(s->chroma_intra_matrix, old_permutation, s->dsp.idct_permutation);
1342 quant_matrix_rebuild(s->chroma_inter_matrix, old_permutation, s->dsp.idct_permutation);
1344 s1->mpeg_enc_ctx_allocated = 1;
1349 static int mpeg1_decode_picture(AVCodecContext *avctx,
1350 const uint8_t *buf, int buf_size)
1352 Mpeg1Context *s1 = avctx->priv_data;
1353 MpegEncContext *s = &s1->mpeg_enc_ctx;
1354 int ref, f_code, vbv_delay;
1356 init_get_bits(&s->gb, buf, buf_size*8);
1358 ref = get_bits(&s->gb, 10); /* temporal ref */
1359 s->pict_type = get_bits(&s->gb, 3);
1360 if (s->pict_type == 0 || s->pict_type > 3)
1363 vbv_delay = get_bits(&s->gb, 16);
1364 if (s->pict_type == AV_PICTURE_TYPE_P || s->pict_type == AV_PICTURE_TYPE_B) {
1365 s->full_pel[0] = get_bits1(&s->gb);
1366 f_code = get_bits(&s->gb, 3);
1367 if (f_code == 0 && (avctx->err_recognition & (AV_EF_BITSTREAM|AV_EF_COMPLIANT)))
1369 s->mpeg_f_code[0][0] = f_code;
1370 s->mpeg_f_code[0][1] = f_code;
1372 if (s->pict_type == AV_PICTURE_TYPE_B) {
1373 s->full_pel[1] = get_bits1(&s->gb);
1374 f_code = get_bits(&s->gb, 3);
1375 if (f_code == 0 && (avctx->err_recognition & (AV_EF_BITSTREAM|AV_EF_COMPLIANT)))
1377 s->mpeg_f_code[1][0] = f_code;
1378 s->mpeg_f_code[1][1] = f_code;
1380 s->current_picture.f.pict_type = s->pict_type;
1381 s->current_picture.f.key_frame = s->pict_type == AV_PICTURE_TYPE_I;
1383 if (avctx->debug & FF_DEBUG_PICT_INFO)
1384 av_log(avctx, AV_LOG_DEBUG, "vbv_delay %d, ref %d type:%d\n", vbv_delay, ref, s->pict_type);
1391 static void mpeg_decode_sequence_extension(Mpeg1Context *s1)
1393 MpegEncContext *s= &s1->mpeg_enc_ctx;
1394 int horiz_size_ext, vert_size_ext;
1397 skip_bits(&s->gb, 1); /* profile and level esc*/
1398 s->avctx->profile = get_bits(&s->gb, 3);
1399 s->avctx->level = get_bits(&s->gb, 4);
1400 s->progressive_sequence = get_bits1(&s->gb); /* progressive_sequence */
1401 s->chroma_format = get_bits(&s->gb, 2); /* chroma_format 1=420, 2=422, 3=444 */
1402 horiz_size_ext = get_bits(&s->gb, 2);
1403 vert_size_ext = get_bits(&s->gb, 2);
1404 s->width |= (horiz_size_ext << 12);
1405 s->height |= (vert_size_ext << 12);
1406 bit_rate_ext = get_bits(&s->gb, 12); /* XXX: handle it */
1407 s->bit_rate += (bit_rate_ext << 18) * 400;
1408 skip_bits1(&s->gb); /* marker */
1409 s->avctx->rc_buffer_size += get_bits(&s->gb, 8) * 1024 * 16 << 10;
1411 s->low_delay = get_bits1(&s->gb);
1412 if (s->flags & CODEC_FLAG_LOW_DELAY)
1415 s1->frame_rate_ext.num = get_bits(&s->gb, 2) + 1;
1416 s1->frame_rate_ext.den = get_bits(&s->gb, 5) + 1;
1418 av_dlog(s->avctx, "sequence extension\n");
1419 s->codec_id = s->avctx->codec_id = CODEC_ID_MPEG2VIDEO;
1420 s->avctx->sub_id = 2; /* indicates MPEG-2 found */
1422 if (s->avctx->debug & FF_DEBUG_PICT_INFO)
1423 av_log(s->avctx, AV_LOG_DEBUG, "profile: %d, level: %d vbv buffer: %d, bitrate:%d\n",
1424 s->avctx->profile, s->avctx->level, s->avctx->rc_buffer_size, s->bit_rate);
1428 static void mpeg_decode_sequence_display_extension(Mpeg1Context *s1)
1430 MpegEncContext *s = &s1->mpeg_enc_ctx;
1431 int color_description, w, h;
1433 skip_bits(&s->gb, 3); /* video format */
1434 color_description = get_bits1(&s->gb);
1435 if (color_description) {
1436 s->avctx->color_primaries = get_bits(&s->gb, 8);
1437 s->avctx->color_trc = get_bits(&s->gb, 8);
1438 s->avctx->colorspace = get_bits(&s->gb, 8);
1440 w = get_bits(&s->gb, 14);
1441 skip_bits(&s->gb, 1); //marker
1442 h = get_bits(&s->gb, 14);
1443 // remaining 3 bits are zero padding
1445 s1->pan_scan.width = 16 * w;
1446 s1->pan_scan.height = 16 * h;
1448 if (s->avctx->debug & FF_DEBUG_PICT_INFO)
1449 av_log(s->avctx, AV_LOG_DEBUG, "sde w:%d, h:%d\n", w, h);
1452 static void mpeg_decode_picture_display_extension(Mpeg1Context *s1)
1454 MpegEncContext *s = &s1->mpeg_enc_ctx;
1458 if (s->progressive_sequence) {
1459 if (s->repeat_first_field) {
1461 if (s->top_field_first)
1465 if (s->picture_structure == PICT_FRAME) {
1467 if (s->repeat_first_field)
1471 for (i = 0; i < nofco; i++) {
1472 s1->pan_scan.position[i][0] = get_sbits(&s->gb, 16);
1473 skip_bits(&s->gb, 1); // marker
1474 s1->pan_scan.position[i][1] = get_sbits(&s->gb, 16);
1475 skip_bits(&s->gb, 1); // marker
1478 if (s->avctx->debug & FF_DEBUG_PICT_INFO)
1479 av_log(s->avctx, AV_LOG_DEBUG, "pde (%d,%d) (%d,%d) (%d,%d)\n",
1480 s1->pan_scan.position[0][0], s1->pan_scan.position[0][1],
1481 s1->pan_scan.position[1][0], s1->pan_scan.position[1][1],
1482 s1->pan_scan.position[2][0], s1->pan_scan.position[2][1]);
1485 static int load_matrix(MpegEncContext *s, uint16_t matrix0[64], uint16_t matrix1[64], int intra)
1489 for (i = 0; i < 64; i++) {
1490 int j = s->dsp.idct_permutation[ff_zigzag_direct[i]];
1491 int v = get_bits(&s->gb, 8);
1493 av_log(s->avctx, AV_LOG_ERROR, "matrix damaged\n");
1496 if (intra && i == 0 && v != 8) {
1497 av_log(s->avctx, AV_LOG_ERROR, "intra matrix invalid, ignoring\n");
1498 v = 8; // needed by pink.mpg / issue1046
1507 static void mpeg_decode_quant_matrix_extension(MpegEncContext *s)
1509 av_dlog(s->avctx, "matrix extension\n");
1511 if (get_bits1(&s->gb)) load_matrix(s, s->chroma_intra_matrix, s->intra_matrix, 1);
1512 if (get_bits1(&s->gb)) load_matrix(s, s->chroma_inter_matrix, s->inter_matrix, 0);
1513 if (get_bits1(&s->gb)) load_matrix(s, s->chroma_intra_matrix, NULL , 1);
1514 if (get_bits1(&s->gb)) load_matrix(s, s->chroma_inter_matrix, NULL , 0);
1517 static void mpeg_decode_picture_coding_extension(Mpeg1Context *s1)
1519 MpegEncContext *s = &s1->mpeg_enc_ctx;
1521 s->full_pel[0] = s->full_pel[1] = 0;
1522 s->mpeg_f_code[0][0] = get_bits(&s->gb, 4);
1523 s->mpeg_f_code[0][1] = get_bits(&s->gb, 4);
1524 s->mpeg_f_code[1][0] = get_bits(&s->gb, 4);
1525 s->mpeg_f_code[1][1] = get_bits(&s->gb, 4);
1526 if (!s->pict_type && s1->mpeg_enc_ctx_allocated) {
1527 av_log(s->avctx, AV_LOG_ERROR, "Missing picture start code, guessing missing values\n");
1528 if (s->mpeg_f_code[1][0] == 15 && s->mpeg_f_code[1][1] == 15) {
1529 if (s->mpeg_f_code[0][0] == 15 && s->mpeg_f_code[0][1] == 15)
1530 s->pict_type = AV_PICTURE_TYPE_I;
1532 s->pict_type = AV_PICTURE_TYPE_P;
1534 s->pict_type = AV_PICTURE_TYPE_B;
1535 s->current_picture.f.pict_type = s->pict_type;
1536 s->current_picture.f.key_frame = s->pict_type == AV_PICTURE_TYPE_I;
1538 s->intra_dc_precision = get_bits(&s->gb, 2);
1539 s->picture_structure = get_bits(&s->gb, 2);
1540 s->top_field_first = get_bits1(&s->gb);
1541 s->frame_pred_frame_dct = get_bits1(&s->gb);
1542 s->concealment_motion_vectors = get_bits1(&s->gb);
1543 s->q_scale_type = get_bits1(&s->gb);
1544 s->intra_vlc_format = get_bits1(&s->gb);
1545 s->alternate_scan = get_bits1(&s->gb);
1546 s->repeat_first_field = get_bits1(&s->gb);
1547 s->chroma_420_type = get_bits1(&s->gb);
1548 s->progressive_frame = get_bits1(&s->gb);
1550 if (s->progressive_sequence && !s->progressive_frame) {
1551 s->progressive_frame = 1;
1552 av_log(s->avctx, AV_LOG_ERROR, "interlaced frame in progressive sequence, ignoring\n");
1555 if (s->picture_structure == 0 || (s->progressive_frame && s->picture_structure != PICT_FRAME)) {
1556 av_log(s->avctx, AV_LOG_ERROR, "picture_structure %d invalid, ignoring\n", s->picture_structure);
1557 s->picture_structure = PICT_FRAME;
1560 if (s->progressive_sequence && !s->frame_pred_frame_dct) {
1561 av_log(s->avctx, AV_LOG_ERROR, "invalid frame_pred_frame_dct\n");
1564 if (s->picture_structure == PICT_FRAME) {
1566 s->v_edge_pos = 16 * s->mb_height;
1568 s->first_field ^= 1;
1569 s->v_edge_pos = 8 * s->mb_height;
1570 memset(s->mbskip_table, 0, s->mb_stride * s->mb_height);
1573 if (s->alternate_scan) {
1574 ff_init_scantable(s->dsp.idct_permutation, &s->inter_scantable, ff_alternate_vertical_scan);
1575 ff_init_scantable(s->dsp.idct_permutation, &s->intra_scantable, ff_alternate_vertical_scan);
1577 ff_init_scantable(s->dsp.idct_permutation, &s->inter_scantable, ff_zigzag_direct);
1578 ff_init_scantable(s->dsp.idct_permutation, &s->intra_scantable, ff_zigzag_direct);
1581 /* composite display not parsed */
1582 av_dlog(s->avctx, "intra_dc_precision=%d\n", s->intra_dc_precision);
1583 av_dlog(s->avctx, "picture_structure=%d\n", s->picture_structure);
1584 av_dlog(s->avctx, "top field first=%d\n", s->top_field_first);
1585 av_dlog(s->avctx, "repeat first field=%d\n", s->repeat_first_field);
1586 av_dlog(s->avctx, "conceal=%d\n", s->concealment_motion_vectors);
1587 av_dlog(s->avctx, "intra_vlc_format=%d\n", s->intra_vlc_format);
1588 av_dlog(s->avctx, "alternate_scan=%d\n", s->alternate_scan);
1589 av_dlog(s->avctx, "frame_pred_frame_dct=%d\n", s->frame_pred_frame_dct);
1590 av_dlog(s->avctx, "progressive_frame=%d\n", s->progressive_frame);
1593 static int mpeg_field_start(MpegEncContext *s, const uint8_t *buf, int buf_size)
1595 AVCodecContext *avctx = s->avctx;
1596 Mpeg1Context *s1 = (Mpeg1Context*)s;
1598 /* start frame decoding */
1599 if (s->first_field || s->picture_structure == PICT_FRAME) {
1600 if (MPV_frame_start(s, avctx) < 0)
1603 ff_er_frame_start(s);
1605 /* first check if we must repeat the frame */
1606 s->current_picture_ptr->f.repeat_pict = 0;
1607 if (s->repeat_first_field) {
1608 if (s->progressive_sequence) {
1609 if (s->top_field_first)
1610 s->current_picture_ptr->f.repeat_pict = 4;
1612 s->current_picture_ptr->f.repeat_pict = 2;
1613 } else if (s->progressive_frame) {
1614 s->current_picture_ptr->f.repeat_pict = 1;
1618 *s->current_picture_ptr->f.pan_scan = s1->pan_scan;
1620 if (HAVE_THREADS && (avctx->active_thread_type & FF_THREAD_FRAME))
1621 ff_thread_finish_setup(avctx);
1622 } else { // second field
1625 if (!s->current_picture_ptr) {
1626 av_log(s->avctx, AV_LOG_ERROR, "first field missing\n");
1630 for (i = 0; i < 4; i++) {
1631 s->current_picture.f.data[i] = s->current_picture_ptr->f.data[i];
1632 if (s->picture_structure == PICT_BOTTOM_FIELD) {
1633 s->current_picture.f.data[i] += s->current_picture_ptr->f.linesize[i];
1638 if (avctx->hwaccel) {
1639 if (avctx->hwaccel->start_frame(avctx, buf, buf_size) < 0)
1643 // MPV_frame_start will call this function too,
1644 // but we need to call it on every field
1645 if (CONFIG_MPEG_XVMC_DECODER && s->avctx->xvmc_acceleration)
1646 if (ff_xvmc_field_start(s, avctx) < 0)
1652 #define DECODE_SLICE_ERROR -1
1653 #define DECODE_SLICE_OK 0
1656 * decodes a slice. MpegEncContext.mb_y must be set to the MB row from the startcode
1657 * @return DECODE_SLICE_ERROR if the slice is damaged<br>
1658 * DECODE_SLICE_OK if this slice is ok<br>
1660 static int mpeg_decode_slice(MpegEncContext *s, int mb_y,
1661 const uint8_t **buf, int buf_size)
1663 AVCodecContext *avctx = s->avctx;
1664 const int lowres = s->avctx->lowres;
1665 const int field_pic = s->picture_structure != PICT_FRAME;
1668 s->resync_mb_y = -1;
1670 assert(mb_y < s->mb_height);
1672 init_get_bits(&s->gb, *buf, buf_size * 8);
1674 ff_mpeg1_clean_buffers(s);
1675 s->interlaced_dct = 0;
1677 s->qscale = get_qscale(s);
1679 if (s->qscale == 0) {
1680 av_log(s->avctx, AV_LOG_ERROR, "qscale == 0\n");
1684 /* extra slice info */
1685 while (get_bits1(&s->gb) != 0) {
1686 skip_bits(&s->gb, 8);
1691 if (mb_y == 0 && s->codec_tag == AV_RL32("SLIF")) {
1695 int code = get_vlc2(&s->gb, mbincr_vlc.table, MBINCR_VLC_BITS, 2);
1697 av_log(s->avctx, AV_LOG_ERROR, "first mb_incr damaged\n");
1704 /* otherwise, stuffing, nothing to do */
1712 if (s->mb_x >= (unsigned)s->mb_width) {
1713 av_log(s->avctx, AV_LOG_ERROR, "initial skip overflow\n");
1717 if (avctx->hwaccel) {
1718 const uint8_t *buf_end, *buf_start = *buf - 4; /* include start_code */
1719 int start_code = -1;
1720 buf_end = avpriv_mpv_find_start_code(buf_start + 2, *buf + buf_size, &start_code);
1721 if (buf_end < *buf + buf_size)
1724 if (avctx->hwaccel->decode_slice(avctx, buf_start, buf_end - buf_start) < 0)
1725 return DECODE_SLICE_ERROR;
1727 return DECODE_SLICE_OK;
1730 s->resync_mb_x = s->mb_x;
1731 s->resync_mb_y = s->mb_y = mb_y;
1733 ff_init_block_index(s);
1735 if (s->mb_y == 0 && s->mb_x == 0 && (s->first_field || s->picture_structure == PICT_FRAME)) {
1736 if (s->avctx->debug & FF_DEBUG_PICT_INFO) {
1737 av_log(s->avctx, AV_LOG_DEBUG, "qp:%d fc:%2d%2d%2d%2d %s %s %s %s %s dc:%d pstruct:%d fdct:%d cmv:%d qtype:%d ivlc:%d rff:%d %s\n",
1738 s->qscale, s->mpeg_f_code[0][0], s->mpeg_f_code[0][1], s->mpeg_f_code[1][0], s->mpeg_f_code[1][1],
1739 s->pict_type == AV_PICTURE_TYPE_I ? "I" : (s->pict_type == AV_PICTURE_TYPE_P ? "P" : (s->pict_type == AV_PICTURE_TYPE_B ? "B" : "S")),
1740 s->progressive_sequence ? "ps" :"", s->progressive_frame ? "pf" : "", s->alternate_scan ? "alt" :"", s->top_field_first ? "top" :"",
1741 s->intra_dc_precision, s->picture_structure, s->frame_pred_frame_dct, s->concealment_motion_vectors,
1742 s->q_scale_type, s->intra_vlc_format, s->repeat_first_field, s->chroma_420_type ? "420" :"");
1747 // If 1, we memcpy blocks in xvmcvideo.
1748 if (CONFIG_MPEG_XVMC_DECODER && s->avctx->xvmc_acceleration > 1)
1749 ff_xvmc_init_block(s); // set s->block
1751 if (mpeg_decode_mb(s, s->block) < 0)
1754 if (s->current_picture.f.motion_val[0] && !s->encoding) { // note motion_val is normally NULL unless we want to extract the MVs
1755 const int wrap = s->b8_stride;
1756 int xy = s->mb_x * 2 + s->mb_y * 2 * wrap;
1757 int b8_xy = 4 * (s->mb_x + s->mb_y * s->mb_stride);
1758 int motion_x, motion_y, dir, i;
1760 for (i = 0; i < 2; i++) {
1761 for (dir = 0; dir < 2; dir++) {
1762 if (s->mb_intra || (dir == 1 && s->pict_type != AV_PICTURE_TYPE_B)) {
1763 motion_x = motion_y = 0;
1764 } else if (s->mv_type == MV_TYPE_16X16 || (s->mv_type == MV_TYPE_FIELD && field_pic)) {
1765 motion_x = s->mv[dir][0][0];
1766 motion_y = s->mv[dir][0][1];
1767 } else /*if ((s->mv_type == MV_TYPE_FIELD) || (s->mv_type == MV_TYPE_16X8))*/ {
1768 motion_x = s->mv[dir][i][0];
1769 motion_y = s->mv[dir][i][1];
1772 s->current_picture.f.motion_val[dir][xy ][0] = motion_x;
1773 s->current_picture.f.motion_val[dir][xy ][1] = motion_y;
1774 s->current_picture.f.motion_val[dir][xy + 1][0] = motion_x;
1775 s->current_picture.f.motion_val[dir][xy + 1][1] = motion_y;
1776 s->current_picture.f.ref_index [dir][b8_xy ] =
1777 s->current_picture.f.ref_index [dir][b8_xy + 1] = s->field_select[dir][i];
1778 assert(s->field_select[dir][i] == 0 || s->field_select[dir][i] == 1);
1785 s->dest[0] += 16 >> lowres;
1786 s->dest[1] +=(16 >> lowres) >> s->chroma_x_shift;
1787 s->dest[2] +=(16 >> lowres) >> s->chroma_x_shift;
1789 MPV_decode_mb(s, s->block);
1791 if (++s->mb_x >= s->mb_width) {
1792 const int mb_size = 16 >> s->avctx->lowres;
1794 ff_draw_horiz_band(s, mb_size*(s->mb_y >> field_pic), mb_size);
1795 MPV_report_decode_progress(s);
1798 s->mb_y += 1 << field_pic;
1800 if (s->mb_y >= s->mb_height) {
1801 int left = get_bits_left(&s->gb);
1802 int is_d10 = s->chroma_format == 2 && s->pict_type == AV_PICTURE_TYPE_I && avctx->profile == 0 && avctx->level == 5
1803 && s->intra_dc_precision == 2 && s->q_scale_type == 1 && s->alternate_scan == 0
1804 && s->progressive_frame == 0 /* vbv_delay == 0xBBB || 0xE10*/;
1806 if (left < 0 || (left && show_bits(&s->gb, FFMIN(left, 23)) && !is_d10)
1807 || ((avctx->err_recognition & (AV_EF_BITSTREAM | AV_EF_AGGRESSIVE)) && left > 8)) {
1808 av_log(avctx, AV_LOG_ERROR, "end mismatch left=%d %0X\n", left, show_bits(&s->gb, FFMIN(left, 23)));
1814 ff_init_block_index(s);
1817 /* skip mb handling */
1818 if (s->mb_skip_run == -1) {
1819 /* read increment again */
1822 int code = get_vlc2(&s->gb, mbincr_vlc.table, MBINCR_VLC_BITS, 2);
1824 av_log(s->avctx, AV_LOG_ERROR, "mb incr damaged\n");
1829 s->mb_skip_run += 33;
1830 } else if (code == 35) {
1831 if (s->mb_skip_run != 0 || show_bits(&s->gb, 15) != 0) {
1832 av_log(s->avctx, AV_LOG_ERROR, "slice mismatch\n");
1835 goto eos; /* end of slice */
1837 /* otherwise, stuffing, nothing to do */
1839 s->mb_skip_run += code;
1843 if (s->mb_skip_run) {
1845 if (s->pict_type == AV_PICTURE_TYPE_I) {
1846 av_log(s->avctx, AV_LOG_ERROR, "skipped MB in I frame at %d %d\n", s->mb_x, s->mb_y);
1852 for (i = 0; i < 12; i++)
1853 s->block_last_index[i] = -1;
1854 if (s->picture_structure == PICT_FRAME)
1855 s->mv_type = MV_TYPE_16X16;
1857 s->mv_type = MV_TYPE_FIELD;
1858 if (s->pict_type == AV_PICTURE_TYPE_P) {
1859 /* if P type, zero motion vector is implied */
1860 s->mv_dir = MV_DIR_FORWARD;
1861 s->mv[0][0][0] = s->mv[0][0][1] = 0;
1862 s->last_mv[0][0][0] = s->last_mv[0][0][1] = 0;
1863 s->last_mv[0][1][0] = s->last_mv[0][1][1] = 0;
1864 s->field_select[0][0] = (s->picture_structure - 1) & 1;
1866 /* if B type, reuse previous vectors and directions */
1867 s->mv[0][0][0] = s->last_mv[0][0][0];
1868 s->mv[0][0][1] = s->last_mv[0][0][1];
1869 s->mv[1][0][0] = s->last_mv[1][0][0];
1870 s->mv[1][0][1] = s->last_mv[1][0][1];
1875 eos: // end of slice
1876 *buf += (get_bits_count(&s->gb)-1)/8;
1877 //printf("y %d %d %d %d\n", s->resync_mb_x, s->resync_mb_y, s->mb_x, s->mb_y);
1881 static int slice_decode_thread(AVCodecContext *c, void *arg)
1883 MpegEncContext *s = *(void**)arg;
1884 const uint8_t *buf = s->gb.buffer;
1885 int mb_y = s->start_mb_y;
1886 const int field_pic = s->picture_structure != PICT_FRAME;
1888 s->error_count = (3 * (s->end_mb_y - s->start_mb_y) * s->mb_width) >> field_pic;
1891 uint32_t start_code;
1894 ret = mpeg_decode_slice(s, mb_y, &buf, s->gb.buffer_end - buf);
1896 //av_log(c, AV_LOG_DEBUG, "ret:%d resync:%d/%d mb:%d/%d ts:%d/%d ec:%d\n",
1897 //ret, s->resync_mb_x, s->resync_mb_y, s->mb_x, s->mb_y, s->start_mb_y, s->end_mb_y, s->error_count);
1899 if (c->err_recognition & AV_EF_EXPLODE)
1901 if (s->resync_mb_x >= 0 && s->resync_mb_y >= 0)
1902 ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x, s->mb_y, AC_ERROR | DC_ERROR | MV_ERROR);
1904 ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x-1, s->mb_y, AC_END | DC_END | MV_END);
1907 if (s->mb_y == s->end_mb_y)
1911 buf = avpriv_mpv_find_start_code(buf, s->gb.buffer_end, &start_code);
1912 mb_y= (start_code - SLICE_MIN_START_CODE) << field_pic;
1913 if (s->picture_structure == PICT_BOTTOM_FIELD)
1915 if (mb_y < 0 || mb_y >= s->end_mb_y)
1921 * Handle slice ends.
1922 * @return 1 if it seems to be the last slice
1924 static int slice_end(AVCodecContext *avctx, AVFrame *pict)
1926 Mpeg1Context *s1 = avctx->priv_data;
1927 MpegEncContext *s = &s1->mpeg_enc_ctx;
1929 if (!s1->mpeg_enc_ctx_allocated || !s->current_picture_ptr)
1932 if (s->avctx->hwaccel) {
1933 if (s->avctx->hwaccel->end_frame(s->avctx) < 0)
1934 av_log(avctx, AV_LOG_ERROR, "hardware accelerator failed to decode picture\n");
1937 if (CONFIG_MPEG_XVMC_DECODER && s->avctx->xvmc_acceleration)
1938 ff_xvmc_field_end(s);
1940 /* end of slice reached */
1941 if (/*s->mb_y << field_pic == s->mb_height &&*/ !s->first_field && !s->first_slice) {
1944 s->current_picture_ptr->f.qscale_type = FF_QSCALE_TYPE_MPEG2;
1950 if (s->pict_type == AV_PICTURE_TYPE_B || s->low_delay) {
1951 *pict = *(AVFrame*)s->current_picture_ptr;
1952 ff_print_debug_info(s, pict);
1954 if (avctx->active_thread_type & FF_THREAD_FRAME)
1955 s->picture_number++;
1956 /* latency of 1 frame for I- and P-frames */
1957 /* XXX: use another variable than picture_number */
1958 if (s->last_picture_ptr != NULL) {
1959 *pict = *(AVFrame*)s->last_picture_ptr;
1960 ff_print_debug_info(s, pict);
1970 static int mpeg1_decode_sequence(AVCodecContext *avctx,
1971 const uint8_t *buf, int buf_size)
1973 Mpeg1Context *s1 = avctx->priv_data;
1974 MpegEncContext *s = &s1->mpeg_enc_ctx;
1978 init_get_bits(&s->gb, buf, buf_size*8);
1980 width = get_bits(&s->gb, 12);
1981 height = get_bits(&s->gb, 12);
1982 if (width <= 0 || height <= 0)
1984 s->aspect_ratio_info = get_bits(&s->gb, 4);
1985 if (s->aspect_ratio_info == 0) {
1986 av_log(avctx, AV_LOG_ERROR, "aspect ratio has forbidden 0 value\n");
1987 if (avctx->err_recognition & (AV_EF_BITSTREAM | AV_EF_COMPLIANT))
1990 s->frame_rate_index = get_bits(&s->gb, 4);
1991 if (s->frame_rate_index == 0 || s->frame_rate_index > 13)
1993 s->bit_rate = get_bits(&s->gb, 18) * 400;
1994 if (get_bits1(&s->gb) == 0) /* marker */
1999 s->avctx->rc_buffer_size = get_bits(&s->gb, 10) * 1024 * 16;
2000 skip_bits(&s->gb, 1);
2003 if (get_bits1(&s->gb)) {
2004 load_matrix(s, s->chroma_intra_matrix, s->intra_matrix, 1);
2006 for (i = 0; i < 64; i++) {
2007 j = s->dsp.idct_permutation[i];
2008 v = ff_mpeg1_default_intra_matrix[i];
2009 s->intra_matrix[j] = v;
2010 s->chroma_intra_matrix[j] = v;
2013 if (get_bits1(&s->gb)) {
2014 load_matrix(s, s->chroma_inter_matrix, s->inter_matrix, 0);
2016 for (i = 0; i < 64; i++) {
2017 int j = s->dsp.idct_permutation[i];
2018 v = ff_mpeg1_default_non_intra_matrix[i];
2019 s->inter_matrix[j] = v;
2020 s->chroma_inter_matrix[j] = v;
2024 if (show_bits(&s->gb, 23) != 0) {
2025 av_log(s->avctx, AV_LOG_ERROR, "sequence header damaged\n");
2029 /* we set MPEG-2 parameters so that it emulates MPEG-1 */
2030 s->progressive_sequence = 1;
2031 s->progressive_frame = 1;
2032 s->picture_structure = PICT_FRAME;
2033 s->frame_pred_frame_dct = 1;
2034 s->chroma_format = 1;
2035 s->codec_id = s->avctx->codec_id = CODEC_ID_MPEG1VIDEO;
2036 avctx->sub_id = 1; /* indicates MPEG-1 */
2037 s->out_format = FMT_MPEG1;
2038 s->swap_uv = 0; // AFAIK VCR2 does not have SEQ_HEADER
2039 if (s->flags & CODEC_FLAG_LOW_DELAY)
2042 if (s->avctx->debug & FF_DEBUG_PICT_INFO)
2043 av_log(s->avctx, AV_LOG_DEBUG, "vbv buffer: %d, bitrate:%d\n",
2044 s->avctx->rc_buffer_size, s->bit_rate);
2049 static int vcr2_init_sequence(AVCodecContext *avctx)
2051 Mpeg1Context *s1 = avctx->priv_data;
2052 MpegEncContext *s = &s1->mpeg_enc_ctx;
2055 /* start new MPEG-1 context decoding */
2056 s->out_format = FMT_MPEG1;
2057 if (s1->mpeg_enc_ctx_allocated) {
2060 s->width = avctx->coded_width;
2061 s->height = avctx->coded_height;
2062 avctx->has_b_frames = 0; // true?
2065 avctx->pix_fmt = mpeg_get_pixelformat(avctx);
2066 avctx->hwaccel = ff_find_hwaccel(avctx->codec->id, avctx->pix_fmt);
2068 if( avctx->pix_fmt == PIX_FMT_XVMC_MPEG2_IDCT || avctx->hwaccel )
2069 if (avctx->idct_algo == FF_IDCT_AUTO)
2070 avctx->idct_algo = FF_IDCT_SIMPLE;
2072 if (MPV_common_init(s) < 0)
2074 exchange_uv(s); // common init reset pblocks, so we swap them here
2075 s->swap_uv = 1; // in case of xvmc we need to swap uv for each MB
2076 s1->mpeg_enc_ctx_allocated = 1;
2078 for (i = 0; i < 64; i++) {
2079 int j = s->dsp.idct_permutation[i];
2080 v = ff_mpeg1_default_intra_matrix[i];
2081 s->intra_matrix[j] = v;
2082 s->chroma_intra_matrix[j] = v;
2084 v = ff_mpeg1_default_non_intra_matrix[i];
2085 s->inter_matrix[j] = v;
2086 s->chroma_inter_matrix[j] = v;
2089 s->progressive_sequence = 1;
2090 s->progressive_frame = 1;
2091 s->picture_structure = PICT_FRAME;
2092 s->frame_pred_frame_dct = 1;
2093 s->chroma_format = 1;
2094 s->codec_id = s->avctx->codec_id = CODEC_ID_MPEG2VIDEO;
2095 avctx->sub_id = 2; /* indicates MPEG-2 */
2096 s1->save_width = s->width;
2097 s1->save_height = s->height;
2098 s1->save_progressive_seq = s->progressive_sequence;
2103 static void mpeg_decode_user_data(AVCodecContext *avctx,
2104 const uint8_t *p, int buf_size)
2106 Mpeg1Context *s = avctx->priv_data;
2107 const uint8_t *buf_end = p + buf_size;
2112 if(!memcmp(p+i, "\0TMPGEXS\0", 9)){
2116 /* for(i=0; !(!p[i-2] && !p[i-1] && p[i]==1) && i<buf_size; i++){
2117 av_log(0,0, "%c", p[i]);
2119 av_log(0,0, "\n");*/
2122 /* we parse the DTG active format information */
2123 if (buf_end - p >= 5 &&
2124 p[0] == 'D' && p[1] == 'T' && p[2] == 'G' && p[3] == '1') {
2132 if (buf_end - p < 1)
2134 avctx->dtg_active_format = p[0] & 0x0f;
2139 static void mpeg_decode_gop(AVCodecContext *avctx,
2140 const uint8_t *buf, int buf_size)
2142 Mpeg1Context *s1 = avctx->priv_data;
2143 MpegEncContext *s = &s1->mpeg_enc_ctx;
2147 init_get_bits(&s->gb, buf, buf_size*8);
2149 tc = avctx->timecode_frame_start = get_bits(&s->gb, 25);
2151 s->closed_gop = get_bits1(&s->gb);
2152 /*broken_link indicate that after editing the
2153 reference frames of the first B-Frames after GOP I-Frame
2154 are missing (open gop)*/
2155 broken_link = get_bits1(&s->gb);
2157 if (s->avctx->debug & FF_DEBUG_PICT_INFO) {
2158 int time_code_hours = tc>>19 & 0x1f;
2159 int time_code_minutes = tc>>13 & 0x3f;
2160 int time_code_seconds = tc>>6 & 0x3f;
2161 int drop_frame_flag = tc & 1<<24;
2162 int time_code_pictures = tc & 0x3f;
2163 av_log(s->avctx, AV_LOG_DEBUG, "GOP (%02d:%02d:%02d%c%02d) closed_gop=%d broken_link=%d\n",
2164 time_code_hours, time_code_minutes, time_code_seconds,
2165 drop_frame_flag ? ';' : ':',
2166 time_code_pictures, s->closed_gop, broken_link);
2170 * Find the end of the current frame in the bitstream.
2171 * @return the position of the first byte of the next frame, or -1
2173 int ff_mpeg1_find_frame_end(ParseContext *pc, const uint8_t *buf, int buf_size, AVCodecParserContext *s)
2176 uint32_t state = pc->state;
2178 /* EOF considered as end of frame */
2183 0 frame start -> 1/4
2184 1 first_SEQEXT -> 0/2
2185 2 first field start -> 3/0
2186 3 second_SEQEXT -> 2/0
2190 for (i = 0; i < buf_size; i++) {
2191 assert(pc->frame_start_found >= 0 && pc->frame_start_found <= 4);
2192 if (pc->frame_start_found & 1) {
2193 if (state == EXT_START_CODE && (buf[i] & 0xF0) != 0x80)
2194 pc->frame_start_found--;
2195 else if (state == EXT_START_CODE + 2) {
2196 if ((buf[i] & 3) == 3)
2197 pc->frame_start_found = 0;
2199 pc->frame_start_found = (pc->frame_start_found + 1) & 3;
2203 i = avpriv_mpv_find_start_code(buf + i, buf + buf_size, &state) - buf - 1;
2204 if (pc->frame_start_found == 0 && state >= SLICE_MIN_START_CODE && state <= SLICE_MAX_START_CODE) {
2206 pc->frame_start_found = 4;
2208 if (state == SEQ_END_CODE) {
2212 if (pc->frame_start_found == 2 && state == SEQ_START_CODE)
2213 pc->frame_start_found = 0;
2214 if (pc->frame_start_found < 4 && state == EXT_START_CODE)
2215 pc->frame_start_found++;
2216 if (pc->frame_start_found == 4 && (state & 0xFFFFFF00) == 0x100) {
2217 if (state < SLICE_MIN_START_CODE || state > SLICE_MAX_START_CODE) {
2218 pc->frame_start_found = 0;
2223 if (pc->frame_start_found == 0 && s && state == PICTURE_START_CODE) {
2224 ff_fetch_timestamp(s, i - 3, 1);
2229 return END_NOT_FOUND;
2232 static int decode_chunks(AVCodecContext *avctx,
2233 AVFrame *picture, int *data_size,
2234 const uint8_t *buf, int buf_size);
2236 /* handle buffering and image synchronisation */
2237 static int mpeg_decode_frame(AVCodecContext *avctx,
2238 void *data, int *data_size,
2241 const uint8_t *buf = avpkt->data;
2242 int buf_size = avpkt->size;
2243 Mpeg1Context *s = avctx->priv_data;
2244 AVFrame *picture = data;
2245 MpegEncContext *s2 = &s->mpeg_enc_ctx;
2246 av_dlog(avctx, "fill_buffer\n");
2248 if (buf_size == 0 || (buf_size == 4 && AV_RB32(buf) == SEQ_END_CODE)) {
2249 /* special case for last picture */
2250 if (s2->low_delay == 0 && s2->next_picture_ptr) {
2251 *picture = *(AVFrame*)s2->next_picture_ptr;
2252 s2->next_picture_ptr = NULL;
2254 *data_size = sizeof(AVFrame);
2259 if (s2->flags & CODEC_FLAG_TRUNCATED) {
2260 int next = ff_mpeg1_find_frame_end(&s2->parse_context, buf, buf_size, NULL);
2262 if (ff_combine_frame(&s2->parse_context, next, (const uint8_t **)&buf, &buf_size) < 0)
2266 if (s->mpeg_enc_ctx_allocated == 0 && avctx->codec_tag == AV_RL32("VCR2"))
2267 vcr2_init_sequence(avctx);
2271 if (avctx->extradata && !avctx->frame_number) {
2272 int ret = decode_chunks(avctx, picture, data_size, avctx->extradata, avctx->extradata_size);
2273 if (ret < 0 && (avctx->err_recognition & AV_EF_EXPLODE))
2277 return decode_chunks(avctx, picture, data_size, buf, buf_size);
2280 static int decode_chunks(AVCodecContext *avctx,
2281 AVFrame *picture, int *data_size,
2282 const uint8_t *buf, int buf_size)
2284 Mpeg1Context *s = avctx->priv_data;
2285 MpegEncContext *s2 = &s->mpeg_enc_ctx;
2286 const uint8_t *buf_ptr = buf;
2287 const uint8_t *buf_end = buf + buf_size;
2288 int ret, input_size;
2292 /* find next start code */
2293 uint32_t start_code = -1;
2294 buf_ptr = avpriv_mpv_find_start_code(buf_ptr, buf_end, &start_code);
2295 if (start_code > 0x1ff) {
2296 if (s2->pict_type != AV_PICTURE_TYPE_B || avctx->skip_frame <= AVDISCARD_DEFAULT) {
2297 if (HAVE_THREADS && (avctx->active_thread_type & FF_THREAD_SLICE)) {
2299 av_assert0(avctx->thread_count > 1);
2301 avctx->execute(avctx, slice_decode_thread, &s2->thread_context[0], NULL, s->slice_count, sizeof(void*));
2302 for (i = 0; i < s->slice_count; i++)
2303 s2->error_count += s2->thread_context[i]->error_count;
2306 if (CONFIG_VDPAU && uses_vdpau(avctx))
2307 ff_vdpau_mpeg_picture_complete(s2, buf, buf_size, s->slice_count);
2310 if (slice_end(avctx, picture)) {
2311 if (s2->last_picture_ptr || s2->low_delay) //FIXME merge with the stuff in mpeg_decode_slice
2312 *data_size = sizeof(AVPicture);
2316 return FFMAX(0, buf_ptr - buf - s2->parse_context.last_index);
2319 input_size = buf_end - buf_ptr;
2321 if (avctx->debug & FF_DEBUG_STARTCODE) {
2322 av_log(avctx, AV_LOG_DEBUG, "%3X at %td left %d\n", start_code, buf_ptr-buf, input_size);
2325 /* prepare data for next start code */
2326 switch (start_code) {
2327 case SEQ_START_CODE:
2328 if (last_code == 0) {
2329 mpeg1_decode_sequence(avctx, buf_ptr, input_size);
2330 if(buf != avctx->extradata)
2333 av_log(avctx, AV_LOG_ERROR, "ignoring SEQ_START_CODE after %X\n", last_code);
2334 if (avctx->err_recognition & AV_EF_EXPLODE)
2335 return AVERROR_INVALIDDATA;
2339 case PICTURE_START_CODE:
2341 s2->intra_dc_precision= 3;
2342 s2->intra_matrix[0]= 1;
2344 if (HAVE_THREADS && (avctx->active_thread_type & FF_THREAD_SLICE) && s->slice_count) {
2347 avctx->execute(avctx, slice_decode_thread,
2348 s2->thread_context, NULL,
2349 s->slice_count, sizeof(void*));
2350 for (i = 0; i < s->slice_count; i++)
2351 s2->error_count += s2->thread_context[i]->error_count;
2354 if (last_code == 0 || last_code == SLICE_MIN_START_CODE) {
2355 ret = mpeg_decode_postinit(avctx);
2357 av_log(avctx, AV_LOG_ERROR, "mpeg_decode_postinit() failure\n");
2361 /* we have a complete image: we try to decompress it */
2362 if (mpeg1_decode_picture(avctx, buf_ptr, input_size) < 0)
2364 s2->first_slice = 1;
2365 last_code = PICTURE_START_CODE;
2367 av_log(avctx, AV_LOG_ERROR, "ignoring pic after %X\n", last_code);
2368 if (avctx->err_recognition & AV_EF_EXPLODE)
2369 return AVERROR_INVALIDDATA;
2372 case EXT_START_CODE:
2373 init_get_bits(&s2->gb, buf_ptr, input_size*8);
2375 switch (get_bits(&s2->gb, 4)) {
2377 if (last_code == 0) {
2378 mpeg_decode_sequence_extension(s);
2380 av_log(avctx, AV_LOG_ERROR, "ignoring seq ext after %X\n", last_code);
2381 if (avctx->err_recognition & AV_EF_EXPLODE)
2382 return AVERROR_INVALIDDATA;
2386 mpeg_decode_sequence_display_extension(s);
2389 mpeg_decode_quant_matrix_extension(s2);
2392 mpeg_decode_picture_display_extension(s);
2395 if (last_code == PICTURE_START_CODE) {
2396 mpeg_decode_picture_coding_extension(s);
2398 av_log(avctx, AV_LOG_ERROR, "ignoring pic cod ext after %X\n", last_code);
2399 if (avctx->err_recognition & AV_EF_EXPLODE)
2400 return AVERROR_INVALIDDATA;
2405 case USER_START_CODE:
2406 mpeg_decode_user_data(avctx, buf_ptr, input_size);
2408 case GOP_START_CODE:
2409 if (last_code == 0) {
2411 mpeg_decode_gop(avctx, buf_ptr, input_size);
2414 av_log(avctx, AV_LOG_ERROR, "ignoring GOP_START_CODE after %X\n", last_code);
2415 if (avctx->err_recognition & AV_EF_EXPLODE)
2416 return AVERROR_INVALIDDATA;
2420 if (start_code >= SLICE_MIN_START_CODE &&
2421 start_code <= SLICE_MAX_START_CODE && last_code != 0) {
2422 const int field_pic = s2->picture_structure != PICT_FRAME;
2423 int mb_y = (start_code - SLICE_MIN_START_CODE) << field_pic;
2424 last_code = SLICE_MIN_START_CODE;
2426 if (s2->picture_structure == PICT_BOTTOM_FIELD)
2429 if (mb_y >= s2->mb_height) {
2430 av_log(s2->avctx, AV_LOG_ERROR, "slice below image (%d >= %d)\n", mb_y, s2->mb_height);
2434 if (s2->last_picture_ptr == NULL) {
2435 /* Skip B-frames if we do not have reference frames and gop is not closed */
2436 if (s2->pict_type == AV_PICTURE_TYPE_B) {
2437 if (!s2->closed_gop)
2441 if (s2->pict_type == AV_PICTURE_TYPE_I || (s2->flags2 & CODEC_FLAG2_SHOW_ALL))
2443 if (s2->next_picture_ptr == NULL) {
2444 /* Skip P-frames if we do not have a reference frame or we have an invalid header. */
2445 if (s2->pict_type == AV_PICTURE_TYPE_P && !s->sync) break;
2447 if ((avctx->skip_frame >= AVDISCARD_NONREF && s2->pict_type == AV_PICTURE_TYPE_B) ||
2448 (avctx->skip_frame >= AVDISCARD_NONKEY && s2->pict_type != AV_PICTURE_TYPE_I) ||
2449 avctx->skip_frame >= AVDISCARD_ALL)
2452 if (!s->mpeg_enc_ctx_allocated)
2455 if (s2->codec_id == CODEC_ID_MPEG2VIDEO) {
2456 if (mb_y < avctx->skip_top || mb_y >= s2->mb_height - avctx->skip_bottom)
2460 if (!s2->pict_type) {
2461 av_log(avctx, AV_LOG_ERROR, "Missing picture start code\n");
2462 if (avctx->err_recognition & AV_EF_EXPLODE)
2463 return AVERROR_INVALIDDATA;
2467 if (s2->first_slice) {
2468 s2->first_slice = 0;
2469 if (mpeg_field_start(s2, buf, buf_size) < 0)
2472 if (!s2->current_picture_ptr) {
2473 av_log(avctx, AV_LOG_ERROR, "current_picture not initialized\n");
2474 return AVERROR_INVALIDDATA;
2477 if (uses_vdpau(avctx)) {
2482 if (HAVE_THREADS && (avctx->active_thread_type & FF_THREAD_SLICE)) {
2483 int threshold= (s2->mb_height*s->slice_count + avctx->thread_count/2) / avctx->thread_count;
2484 av_assert0(avctx->thread_count > 1);
2485 if (threshold <= mb_y) {
2486 MpegEncContext *thread_context = s2->thread_context[s->slice_count];
2488 thread_context->start_mb_y = mb_y;
2489 thread_context->end_mb_y = s2->mb_height;
2490 if (s->slice_count) {
2491 s2->thread_context[s->slice_count-1]->end_mb_y = mb_y;
2492 ff_update_duplicate_context(thread_context, s2);
2494 init_get_bits(&thread_context->gb, buf_ptr, input_size*8);
2497 buf_ptr += 2; // FIXME add minimum number of bytes per slice
2499 ret = mpeg_decode_slice(s2, mb_y, &buf_ptr, input_size);
2503 if (avctx->err_recognition & AV_EF_EXPLODE)
2505 if (s2->resync_mb_x >= 0 && s2->resync_mb_y >= 0)
2506 ff_er_add_slice(s2, s2->resync_mb_x, s2->resync_mb_y, s2->mb_x, s2->mb_y, AC_ERROR | DC_ERROR | MV_ERROR);
2508 ff_er_add_slice(s2, s2->resync_mb_x, s2->resync_mb_y, s2->mb_x-1, s2->mb_y, AC_END | DC_END | MV_END);
2517 static void flush(AVCodecContext *avctx)
2519 Mpeg1Context *s = avctx->priv_data;
2523 ff_mpeg_flush(avctx);
2526 static int mpeg_decode_end(AVCodecContext *avctx)
2528 Mpeg1Context *s = avctx->priv_data;
2530 if (s->mpeg_enc_ctx_allocated)
2531 MPV_common_end(&s->mpeg_enc_ctx);
2535 static const AVProfile mpeg2_video_profiles[] = {
2536 { FF_PROFILE_MPEG2_422, "4:2:2" },
2537 { FF_PROFILE_MPEG2_HIGH, "High" },
2538 { FF_PROFILE_MPEG2_SS, "Spatially Scalable" },
2539 { FF_PROFILE_MPEG2_SNR_SCALABLE, "SNR Scalable" },
2540 { FF_PROFILE_MPEG2_MAIN, "Main" },
2541 { FF_PROFILE_MPEG2_SIMPLE, "Simple" },
2542 { FF_PROFILE_RESERVED, "Reserved" },
2543 { FF_PROFILE_RESERVED, "Reserved" },
2544 { FF_PROFILE_UNKNOWN },
2548 AVCodec ff_mpeg1video_decoder = {
2549 .name = "mpeg1video",
2550 .type = AVMEDIA_TYPE_VIDEO,
2551 .id = CODEC_ID_MPEG1VIDEO,
2552 .priv_data_size = sizeof(Mpeg1Context),
2553 .init = mpeg_decode_init,
2554 .close = mpeg_decode_end,
2555 .decode = mpeg_decode_frame,
2556 .capabilities = CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1 | CODEC_CAP_TRUNCATED | CODEC_CAP_DELAY | CODEC_CAP_SLICE_THREADS,
2559 .long_name = NULL_IF_CONFIG_SMALL("MPEG-1 video"),
2560 .update_thread_context = ONLY_IF_THREADS_ENABLED(mpeg_decode_update_thread_context)
2563 AVCodec ff_mpeg2video_decoder = {
2564 .name = "mpeg2video",
2565 .type = AVMEDIA_TYPE_VIDEO,
2566 .id = CODEC_ID_MPEG2VIDEO,
2567 .priv_data_size = sizeof(Mpeg1Context),
2568 .init = mpeg_decode_init,
2569 .close = mpeg_decode_end,
2570 .decode = mpeg_decode_frame,
2571 .capabilities = CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1 | CODEC_CAP_TRUNCATED | CODEC_CAP_DELAY | CODEC_CAP_SLICE_THREADS,
2574 .long_name = NULL_IF_CONFIG_SMALL("MPEG-2 video"),
2575 .profiles = NULL_IF_CONFIG_SMALL(mpeg2_video_profiles),
2579 AVCodec ff_mpegvideo_decoder = {
2580 .name = "mpegvideo",
2581 .type = AVMEDIA_TYPE_VIDEO,
2582 .id = CODEC_ID_MPEG2VIDEO,
2583 .priv_data_size = sizeof(Mpeg1Context),
2584 .init = mpeg_decode_init,
2585 .close = mpeg_decode_end,
2586 .decode = mpeg_decode_frame,
2587 .capabilities = CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1 | CODEC_CAP_TRUNCATED | CODEC_CAP_DELAY | CODEC_CAP_SLICE_THREADS,
2590 .long_name = NULL_IF_CONFIG_SMALL("MPEG-1 video"),
2593 #if CONFIG_MPEG_XVMC_DECODER
2594 static av_cold int mpeg_mc_decode_init(AVCodecContext *avctx)
2596 if (avctx->active_thread_type & FF_THREAD_SLICE)
2598 if (!(avctx->slice_flags & SLICE_FLAG_CODED_ORDER))
2600 if (!(avctx->slice_flags & SLICE_FLAG_ALLOW_FIELD)) {
2601 av_dlog(avctx, "mpeg12.c: XvMC decoder will work better if SLICE_FLAG_ALLOW_FIELD is set\n");
2603 mpeg_decode_init(avctx);
2605 avctx->pix_fmt = PIX_FMT_XVMC_MPEG2_IDCT;
2606 avctx->xvmc_acceleration = 2; // 2 - the blocks are packed!
2611 AVCodec ff_mpeg_xvmc_decoder = {
2612 .name = "mpegvideo_xvmc",
2613 .type = AVMEDIA_TYPE_VIDEO,
2614 .id = CODEC_ID_MPEG2VIDEO_XVMC,
2615 .priv_data_size = sizeof(Mpeg1Context),
2616 .init = mpeg_mc_decode_init,
2617 .close = mpeg_decode_end,
2618 .decode = mpeg_decode_frame,
2619 .capabilities = CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1 | CODEC_CAP_TRUNCATED| CODEC_CAP_HWACCEL | CODEC_CAP_DELAY,
2621 .long_name = NULL_IF_CONFIG_SMALL("MPEG-1/2 video XvMC (X-Video Motion Compensation)"),
2626 #if CONFIG_MPEG_VDPAU_DECODER
2627 AVCodec ff_mpeg_vdpau_decoder = {
2628 .name = "mpegvideo_vdpau",
2629 .type = AVMEDIA_TYPE_VIDEO,
2630 .id = CODEC_ID_MPEG2VIDEO,
2631 .priv_data_size = sizeof(Mpeg1Context),
2632 .init = mpeg_decode_init,
2633 .close = mpeg_decode_end,
2634 .decode = mpeg_decode_frame,
2635 .capabilities = CODEC_CAP_DR1 | CODEC_CAP_TRUNCATED | CODEC_CAP_HWACCEL_VDPAU | CODEC_CAP_DELAY,
2637 .long_name = NULL_IF_CONFIG_SMALL("MPEG-1/2 video (VDPAU acceleration)"),
2641 #if CONFIG_MPEG1_VDPAU_DECODER
2642 AVCodec ff_mpeg1_vdpau_decoder = {
2643 .name = "mpeg1video_vdpau",
2644 .type = AVMEDIA_TYPE_VIDEO,
2645 .id = CODEC_ID_MPEG1VIDEO,
2646 .priv_data_size = sizeof(Mpeg1Context),
2647 .init = mpeg_decode_init,
2648 .close = mpeg_decode_end,
2649 .decode = mpeg_decode_frame,
2650 .capabilities = CODEC_CAP_DR1 | CODEC_CAP_TRUNCATED | CODEC_CAP_HWACCEL_VDPAU | CODEC_CAP_DELAY,
2652 .long_name = NULL_IF_CONFIG_SMALL("MPEG-1 video (VDPAU acceleration)"),