3 * Copyright (c) 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
28 #define UNCHECKED_BITSTREAM_READER 1
30 #include "libavutil/cpu.h"
32 #include "error_resilience.h"
35 #include "h263_parser.h"
38 #include "mpeg4video.h"
39 #include "mpeg4video_parser.h"
40 #include "mpegutils.h"
41 #include "mpegvideo.h"
44 #include "vdpau_compat.h"
48 static enum AVPixelFormat h263_get_format(AVCodecContext *avctx)
50 if (avctx->codec->id == AV_CODEC_ID_MSS2)
51 return AV_PIX_FMT_YUV420P;
53 if (CONFIG_GRAY && (avctx->flags & AV_CODEC_FLAG_GRAY)) {
54 if (avctx->color_range == AVCOL_RANGE_UNSPECIFIED)
55 avctx->color_range = AVCOL_RANGE_MPEG;
56 return AV_PIX_FMT_GRAY8;
59 return avctx->pix_fmt = ff_get_format(avctx, avctx->codec->pix_fmts);
62 av_cold int ff_h263_decode_init(AVCodecContext *avctx)
64 MpegEncContext *s = avctx->priv_data;
67 s->out_format = FMT_H263;
70 ff_mpv_decode_defaults(s);
71 ff_mpv_decode_init(s, avctx);
73 s->quant_precision = 5;
74 s->decode_mb = ff_h263_decode_mb;
76 s->unrestricted_mv = 1;
78 /* select sub codec */
79 switch (avctx->codec->id) {
80 case AV_CODEC_ID_H263:
81 case AV_CODEC_ID_H263P:
82 s->unrestricted_mv = 0;
83 avctx->chroma_sample_location = AVCHROMA_LOC_CENTER;
85 case AV_CODEC_ID_MPEG4:
87 case AV_CODEC_ID_MSMPEG4V1:
89 s->msmpeg4_version = 1;
91 case AV_CODEC_ID_MSMPEG4V2:
93 s->msmpeg4_version = 2;
95 case AV_CODEC_ID_MSMPEG4V3:
97 s->msmpeg4_version = 3;
99 case AV_CODEC_ID_WMV1:
101 s->msmpeg4_version = 4;
103 case AV_CODEC_ID_WMV2:
105 s->msmpeg4_version = 5;
107 case AV_CODEC_ID_VC1:
108 case AV_CODEC_ID_WMV3:
109 case AV_CODEC_ID_VC1IMAGE:
110 case AV_CODEC_ID_WMV3IMAGE:
111 case AV_CODEC_ID_MSS2:
113 s->msmpeg4_version = 6;
114 avctx->chroma_sample_location = AVCHROMA_LOC_LEFT;
116 case AV_CODEC_ID_H263I:
118 case AV_CODEC_ID_FLV1:
122 av_log(avctx, AV_LOG_ERROR, "Unsupported codec %d\n",
124 return AVERROR(ENOSYS);
126 s->codec_id = avctx->codec->id;
128 if (avctx->codec_tag == AV_RL32("L263") || avctx->codec_tag == AV_RL32("S263"))
129 if (avctx->extradata_size == 56 && avctx->extradata[0] == 1)
132 /* for H.263, we allocate the images after having read the header */
133 if (avctx->codec->id != AV_CODEC_ID_H263 &&
134 avctx->codec->id != AV_CODEC_ID_H263P &&
135 avctx->codec->id != AV_CODEC_ID_MPEG4) {
136 avctx->pix_fmt = h263_get_format(avctx);
138 if ((ret = ff_mpv_common_init(s)) < 0)
142 ff_h263dsp_init(&s->h263dsp);
143 ff_qpeldsp_init(&s->qdsp);
144 ff_h263_decode_init_vlc();
149 av_cold int ff_h263_decode_end(AVCodecContext *avctx)
151 MpegEncContext *s = avctx->priv_data;
153 ff_mpv_common_end(s);
158 * Return the number of bytes consumed for building the current frame.
160 static int get_consumed_bytes(MpegEncContext *s, int buf_size)
162 int pos = (get_bits_count(&s->gb) + 7) >> 3;
164 if (s->divx_packed || s->avctx->hwaccel) {
165 /* We would have to scan through the whole buf to handle the weird
168 } else if (s->avctx->flags & AV_CODEC_FLAG_TRUNCATED) {
169 pos -= s->parse_context.last_index;
170 // padding is not really read so this might be -1
175 // avoid infinite loops (maybe not needed...)
179 if (pos + 10 > buf_size)
186 static int decode_slice(MpegEncContext *s)
188 const int part_mask = s->partitioned_frame
189 ? (ER_AC_END | ER_AC_ERROR) : 0x7F;
190 const int mb_size = 16 >> s->avctx->lowres;
193 s->last_resync_gb = s->gb;
194 s->first_slice_line = 1;
195 s->resync_mb_x = s->mb_x;
196 s->resync_mb_y = s->mb_y;
198 ff_set_qscale(s, s->qscale);
200 if (s->avctx->hwaccel) {
201 const uint8_t *start = s->gb.buffer + get_bits_count(&s->gb) / 8;
202 ret = s->avctx->hwaccel->decode_slice(s->avctx, start, s->gb.buffer_end - start);
203 // ensure we exit decode loop
204 s->mb_y = s->mb_height;
208 if (s->partitioned_frame) {
209 const int qscale = s->qscale;
211 if (CONFIG_MPEG4_DECODER && s->codec_id == AV_CODEC_ID_MPEG4)
212 if ((ret = ff_mpeg4_decode_partitions(s->avctx->priv_data)) < 0)
215 /* restore variables which were modified */
216 s->first_slice_line = 1;
217 s->mb_x = s->resync_mb_x;
218 s->mb_y = s->resync_mb_y;
219 ff_set_qscale(s, qscale);
222 for (; s->mb_y < s->mb_height; s->mb_y++) {
223 /* per-row end of slice checks */
224 if (s->msmpeg4_version) {
225 if (s->resync_mb_y + s->slice_height == s->mb_y) {
226 ff_er_add_slice(&s->er, s->resync_mb_x, s->resync_mb_y,
227 s->mb_x - 1, s->mb_y, ER_MB_END);
233 if (s->msmpeg4_version == 1) {
239 ff_init_block_index(s);
240 for (; s->mb_x < s->mb_width; s->mb_x++) {
243 ff_update_block_index(s);
245 if (s->resync_mb_x == s->mb_x && s->resync_mb_y + 1 == s->mb_y)
246 s->first_slice_line = 0;
250 s->mv_dir = MV_DIR_FORWARD;
251 s->mv_type = MV_TYPE_16X16;
252 ff_dlog(s, "%d %06X\n",
253 get_bits_count(&s->gb), show_bits(&s->gb, 24));
255 ff_tlog(NULL, "Decoding MB at %dx%d\n", s->mb_x, s->mb_y);
256 ret = s->decode_mb(s, s->block);
258 if (s->pict_type != AV_PICTURE_TYPE_B)
259 ff_h263_update_motion_val(s);
262 const int xy = s->mb_x + s->mb_y * s->mb_stride;
263 if (ret == SLICE_END) {
264 ff_mpv_reconstruct_mb(s, s->block);
266 ff_h263_loop_filter(s);
268 ff_er_add_slice(&s->er, s->resync_mb_x, s->resync_mb_y,
269 s->mb_x, s->mb_y, ER_MB_END & part_mask);
271 s->padding_bug_score--;
273 if (++s->mb_x >= s->mb_width) {
275 ff_mpeg_draw_horiz_band(s, s->mb_y * mb_size, mb_size);
276 ff_mpv_report_decode_progress(s);
280 } else if (ret == SLICE_NOEND) {
281 av_log(s->avctx, AV_LOG_ERROR,
282 "Slice mismatch at MB: %d\n", xy);
283 ff_er_add_slice(&s->er, s->resync_mb_x, s->resync_mb_y,
284 s->mb_x + 1, s->mb_y,
285 ER_MB_END & part_mask);
286 return AVERROR_INVALIDDATA;
288 av_log(s->avctx, AV_LOG_ERROR, "Error at MB: %d\n", xy);
289 ff_er_add_slice(&s->er, s->resync_mb_x, s->resync_mb_y,
290 s->mb_x, s->mb_y, ER_MB_ERROR & part_mask);
292 if (s->avctx->err_recognition & AV_EF_IGNORE_ERR)
294 return AVERROR_INVALIDDATA;
297 ff_mpv_reconstruct_mb(s, s->block);
299 ff_h263_loop_filter(s);
302 ff_mpeg_draw_horiz_band(s, s->mb_y * mb_size, mb_size);
303 ff_mpv_report_decode_progress(s);
308 av_assert1(s->mb_x == 0 && s->mb_y == s->mb_height);
310 if (s->codec_id == AV_CODEC_ID_MPEG4 &&
311 (s->workaround_bugs & FF_BUG_AUTODETECT) &&
312 get_bits_left(&s->gb) >= 48 &&
313 show_bits(&s->gb, 24) == 0x4010 &&
314 !s->data_partitioning)
315 s->padding_bug_score += 32;
317 /* try to detect the padding bug */
318 if (s->codec_id == AV_CODEC_ID_MPEG4 &&
319 (s->workaround_bugs & FF_BUG_AUTODETECT) &&
320 get_bits_left(&s->gb) >= 0 &&
321 get_bits_left(&s->gb) < 137 &&
322 !s->data_partitioning) {
323 const int bits_count = get_bits_count(&s->gb);
324 const int bits_left = s->gb.size_in_bits - bits_count;
326 if (bits_left == 0) {
327 s->padding_bug_score += 16;
328 } else if (bits_left != 1) {
329 int v = show_bits(&s->gb, 8);
330 v |= 0x7F >> (7 - (bits_count & 7));
332 if (v == 0x7F && bits_left <= 8)
333 s->padding_bug_score--;
334 else if (v == 0x7F && ((get_bits_count(&s->gb) + 8) & 8) &&
336 s->padding_bug_score += 4;
338 s->padding_bug_score++;
342 if (s->codec_id == AV_CODEC_ID_H263 &&
343 (s->workaround_bugs & FF_BUG_AUTODETECT) &&
344 get_bits_left(&s->gb) >= 8 &&
345 get_bits_left(&s->gb) < 300 &&
346 s->pict_type == AV_PICTURE_TYPE_I &&
347 show_bits(&s->gb, 8) == 0 &&
348 !s->data_partitioning) {
350 s->padding_bug_score += 32;
353 if (s->codec_id == AV_CODEC_ID_H263 &&
354 (s->workaround_bugs & FF_BUG_AUTODETECT) &&
355 get_bits_left(&s->gb) >= 64 &&
356 AV_RB64(s->gb.buffer_end - 8) == 0xCDCDCDCDFC7F0000) {
358 s->padding_bug_score += 32;
361 if (s->workaround_bugs & FF_BUG_AUTODETECT) {
363 (s->padding_bug_score > -2 && !s->data_partitioning))
364 s->workaround_bugs |= FF_BUG_NO_PADDING;
366 s->workaround_bugs &= ~FF_BUG_NO_PADDING;
369 // handle formats which don't have unique end markers
370 if (s->msmpeg4_version || (s->workaround_bugs & FF_BUG_NO_PADDING)) { // FIXME perhaps solve this more cleanly
371 int left = get_bits_left(&s->gb);
374 /* no markers in M$ crap */
375 if (s->msmpeg4_version && s->pict_type == AV_PICTURE_TYPE_I)
378 /* buggy padding but the frame should still end approximately at
379 * the bitstream end */
380 if ((s->workaround_bugs & FF_BUG_NO_PADDING) &&
381 (s->avctx->err_recognition & (AV_EF_BUFFER|AV_EF_AGGRESSIVE)))
383 else if ((s->workaround_bugs & FF_BUG_NO_PADDING))
384 max_extra += 256 * 256 * 256 * 64;
386 if (left > max_extra)
387 av_log(s->avctx, AV_LOG_ERROR,
388 "discarding %d junk bits at end, next would be %X\n",
389 left, show_bits(&s->gb, 24));
391 av_log(s->avctx, AV_LOG_ERROR, "overreading %d bits\n", -left);
393 ff_er_add_slice(&s->er, s->resync_mb_x, s->resync_mb_y,
394 s->mb_x - 1, s->mb_y, ER_MB_END);
399 av_log(s->avctx, AV_LOG_ERROR,
400 "slice end not reached but screenspace end (%d left %06X, score= %d)\n",
401 get_bits_left(&s->gb), show_bits(&s->gb, 24), s->padding_bug_score);
403 ff_er_add_slice(&s->er, s->resync_mb_x, s->resync_mb_y, s->mb_x, s->mb_y,
404 ER_MB_END & part_mask);
406 return AVERROR_INVALIDDATA;
409 int ff_h263_decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
412 const uint8_t *buf = avpkt->data;
413 int buf_size = avpkt->size;
414 MpegEncContext *s = avctx->priv_data;
417 AVFrame *pict = data;
419 /* no supplementary picture */
421 /* special case for last picture */
422 if (s->low_delay == 0 && s->next_picture_ptr) {
423 if ((ret = av_frame_ref(pict, s->next_picture_ptr->f)) < 0)
425 s->next_picture_ptr = NULL;
433 if (s->avctx->flags & AV_CODEC_FLAG_TRUNCATED) {
436 if (CONFIG_MPEG4_DECODER && s->codec_id == AV_CODEC_ID_MPEG4) {
437 next = ff_mpeg4_find_frame_end(&s->parse_context, buf, buf_size);
438 } else if (CONFIG_H263_DECODER && s->codec_id == AV_CODEC_ID_H263) {
439 next = ff_h263_find_frame_end(&s->parse_context, buf, buf_size);
440 } else if (CONFIG_H263P_DECODER && s->codec_id == AV_CODEC_ID_H263P) {
441 next = ff_h263_find_frame_end(&s->parse_context, buf, buf_size);
443 av_log(s->avctx, AV_LOG_ERROR,
444 "this codec does not support truncated bitstreams\n");
445 return AVERROR(ENOSYS);
448 if (ff_combine_frame(&s->parse_context, next, (const uint8_t **)&buf,
454 if (s->divx_packed && s->bitstream_buffer_size) {
456 for(i=0; i < buf_size-3; i++) {
457 if (buf[i]==0 && buf[i+1]==0 && buf[i+2]==1) {
458 if (buf[i+3]==0xB0) {
459 av_log(s->avctx, AV_LOG_WARNING, "Discarding excessive bitstream in packed xvid\n");
460 s->bitstream_buffer_size = 0;
467 if (s->bitstream_buffer_size && (s->divx_packed || buf_size <= MAX_NVOP_SIZE)) // divx 5.01+/xvid frame reorder
468 ret = init_get_bits8(&s->gb, s->bitstream_buffer,
469 s->bitstream_buffer_size);
471 ret = init_get_bits8(&s->gb, buf, buf_size);
473 s->bitstream_buffer_size = 0;
477 if (!s->context_initialized)
478 // we need the idct permutation for reading a custom matrix
482 if (CONFIG_WMV2_DECODER && s->msmpeg4_version == 5) {
483 ret = ff_wmv2_decode_picture_header(s);
484 } else if (CONFIG_MSMPEG4_DECODER && s->msmpeg4_version) {
485 ret = ff_msmpeg4_decode_picture_header(s);
486 } else if (CONFIG_MPEG4_DECODER && avctx->codec_id == AV_CODEC_ID_MPEG4) {
487 if (s->avctx->extradata_size && s->picture_number == 0) {
490 if (init_get_bits8(&gb, s->avctx->extradata, s->avctx->extradata_size) >= 0 )
491 ff_mpeg4_decode_picture_header(avctx->priv_data, &gb);
493 ret = ff_mpeg4_decode_picture_header(avctx->priv_data, &s->gb);
494 } else if (CONFIG_H263I_DECODER && s->codec_id == AV_CODEC_ID_H263I) {
495 ret = ff_intel_h263_decode_picture_header(s);
496 } else if (CONFIG_FLV_DECODER && s->h263_flv) {
497 ret = ff_flv_decode_picture_header(s);
499 ret = ff_h263_decode_picture_header(s);
502 if (ret < 0 || ret == FRAME_SKIPPED) {
503 if ( s->width != avctx->coded_width
504 || s->height != avctx->coded_height) {
505 av_log(s->avctx, AV_LOG_WARNING, "Reverting picture dimensions change due to header decoding failure\n");
506 s->width = avctx->coded_width;
507 s->height= avctx->coded_height;
510 if (ret == FRAME_SKIPPED)
511 return get_consumed_bytes(s, buf_size);
513 /* skip if the header was thrashed */
515 av_log(s->avctx, AV_LOG_ERROR, "header damaged\n");
519 if (!s->context_initialized) {
520 avctx->pix_fmt = h263_get_format(avctx);
521 if ((ret = ff_mpv_common_init(s)) < 0)
525 if (!s->current_picture_ptr || s->current_picture_ptr->f->data[0]) {
526 int i = ff_find_unused_picture(s->avctx, s->picture, 0);
529 s->current_picture_ptr = &s->picture[i];
532 avctx->has_b_frames = !s->low_delay;
534 if (CONFIG_MPEG4_DECODER && avctx->codec_id == AV_CODEC_ID_MPEG4) {
535 if (ff_mpeg4_workaround_bugs(avctx) == 1)
539 /* After H.263 & MPEG-4 header decode we have the height, width,
540 * and other parameters. So then we could init the picture.
541 * FIXME: By the way H.263 decoder is evolving it should have
542 * an H263EncContext */
543 if (s->width != avctx->coded_width ||
544 s->height != avctx->coded_height ||
546 /* H.263 could change picture size any time */
547 s->context_reinit = 0;
549 ret = ff_set_dimensions(avctx, s->width, s->height);
553 ff_set_sar(avctx, avctx->sample_aspect_ratio);
555 if ((ret = ff_mpv_common_frame_size_change(s)))
558 if (avctx->pix_fmt != h263_get_format(avctx)) {
559 av_log(avctx, AV_LOG_ERROR, "format change not supported\n");
560 avctx->pix_fmt = AV_PIX_FMT_NONE;
561 return AVERROR_UNKNOWN;
565 if (s->codec_id == AV_CODEC_ID_H263 ||
566 s->codec_id == AV_CODEC_ID_H263P ||
567 s->codec_id == AV_CODEC_ID_H263I)
568 s->gob_index = H263_GOB_HEIGHT(s->height);
570 // for skipping the frame
571 s->current_picture.f->pict_type = s->pict_type;
572 s->current_picture.f->key_frame = s->pict_type == AV_PICTURE_TYPE_I;
574 /* skip B-frames if we don't have reference frames */
575 if (!s->last_picture_ptr &&
576 (s->pict_type == AV_PICTURE_TYPE_B || s->droppable))
577 return get_consumed_bytes(s, buf_size);
578 if ((avctx->skip_frame >= AVDISCARD_NONREF &&
579 s->pict_type == AV_PICTURE_TYPE_B) ||
580 (avctx->skip_frame >= AVDISCARD_NONKEY &&
581 s->pict_type != AV_PICTURE_TYPE_I) ||
582 avctx->skip_frame >= AVDISCARD_ALL)
583 return get_consumed_bytes(s, buf_size);
585 if (s->next_p_frame_damaged) {
586 if (s->pict_type == AV_PICTURE_TYPE_B)
587 return get_consumed_bytes(s, buf_size);
589 s->next_p_frame_damaged = 0;
592 if ((!s->no_rounding) || s->pict_type == AV_PICTURE_TYPE_B) {
593 s->me.qpel_put = s->qdsp.put_qpel_pixels_tab;
594 s->me.qpel_avg = s->qdsp.avg_qpel_pixels_tab;
596 s->me.qpel_put = s->qdsp.put_no_rnd_qpel_pixels_tab;
597 s->me.qpel_avg = s->qdsp.avg_qpel_pixels_tab;
600 if ((ret = ff_mpv_frame_start(s, avctx)) < 0)
604 ff_thread_finish_setup(avctx);
606 if (avctx->hwaccel) {
607 ret = avctx->hwaccel->start_frame(avctx, s->gb.buffer,
608 s->gb.buffer_end - s->gb.buffer);
613 ff_mpeg_er_frame_start(s);
615 /* the second part of the wmv2 header contains the MB skip bits which
616 * are stored in current_picture->mb_type which is not available before
617 * ff_mpv_frame_start() */
618 if (CONFIG_WMV2_DECODER && s->msmpeg4_version == 5) {
619 ret = ff_wmv2_decode_secondary_picture_header(s);
626 /* decode each macroblock */
630 slice_ret = decode_slice(s);
631 while (s->mb_y < s->mb_height) {
632 if (s->msmpeg4_version) {
633 if (s->slice_height == 0 || s->mb_x != 0 ||
634 (s->mb_y % s->slice_height) != 0 || get_bits_left(&s->gb) < 0)
637 int prev_x = s->mb_x, prev_y = s->mb_y;
638 if (ff_h263_resync(s) < 0)
640 if (prev_y * s->mb_width + prev_x < s->mb_y * s->mb_width + s->mb_x)
641 s->er.error_occurred = 1;
644 if (s->msmpeg4_version < 4 && s->h263_pred)
645 ff_mpeg4_clean_buffers(s);
647 if (decode_slice(s) < 0)
648 slice_ret = AVERROR_INVALIDDATA;
651 if (s->msmpeg4_version && s->msmpeg4_version < 4 &&
652 s->pict_type == AV_PICTURE_TYPE_I)
653 if (!CONFIG_MSMPEG4_DECODER ||
654 ff_msmpeg4_decode_ext_header(s, buf_size) < 0)
655 s->er.error_status_table[s->mb_num - 1] = ER_MB_ERROR;
657 av_assert1(s->bitstream_buffer_size == 0);
659 ff_er_frame_end(&s->er);
661 if (avctx->hwaccel) {
662 ret = avctx->hwaccel->end_frame(avctx);
669 if (CONFIG_MPEG4_DECODER && avctx->codec_id == AV_CODEC_ID_MPEG4)
670 ff_mpeg4_frame_end(avctx, buf, buf_size);
672 if (!s->divx_packed && avctx->hwaccel)
673 ff_thread_finish_setup(avctx);
675 av_assert1(s->current_picture.f->pict_type == s->current_picture_ptr->f->pict_type);
676 av_assert1(s->current_picture.f->pict_type == s->pict_type);
677 if (s->pict_type == AV_PICTURE_TYPE_B || s->low_delay) {
678 if ((ret = av_frame_ref(pict, s->current_picture_ptr->f)) < 0)
680 ff_print_debug_info(s, s->current_picture_ptr, pict);
681 ff_mpv_export_qp_table(s, pict, s->current_picture_ptr, FF_QSCALE_TYPE_MPEG1);
682 } else if (s->last_picture_ptr) {
683 if ((ret = av_frame_ref(pict, s->last_picture_ptr->f)) < 0)
685 ff_print_debug_info(s, s->last_picture_ptr, pict);
686 ff_mpv_export_qp_table(s, pict, s->last_picture_ptr, FF_QSCALE_TYPE_MPEG1);
689 if (s->last_picture_ptr || s->low_delay) {
690 if ( pict->format == AV_PIX_FMT_YUV420P
691 && (s->codec_tag == AV_RL32("GEOV") || s->codec_tag == AV_RL32("GEOX"))) {
693 av_frame_make_writable(pict);
694 for (p=0; p<3; p++) {
695 int w = AV_CEIL_RSHIFT(pict-> width, !!p);
696 int h = AV_CEIL_RSHIFT(pict->height, !!p);
697 int linesize = pict->linesize[p];
698 for (y=0; y<(h>>1); y++)
701 pict->data[p][x + y*linesize],
702 pict->data[p][x + (h-1-y)*linesize]);
708 if (slice_ret < 0 && (avctx->err_recognition & AV_EF_EXPLODE))
711 return get_consumed_bytes(s, buf_size);
714 const enum AVPixelFormat ff_h263_hwaccel_pixfmt_list_420[] = {
715 #if CONFIG_H263_VAAPI_HWACCEL || CONFIG_MPEG4_VAAPI_HWACCEL
718 #if CONFIG_MPEG4_VDPAU_HWACCEL
721 #if CONFIG_H263_VIDEOTOOLBOX_HWACCEL || CONFIG_MPEG4_VIDEOTOOLBOX_HWACCEL
722 AV_PIX_FMT_VIDEOTOOLBOX,
728 AVCodec ff_h263_decoder = {
730 .long_name = NULL_IF_CONFIG_SMALL("H.263 / H.263-1996, H.263+ / H.263-1998 / H.263 version 2"),
731 .type = AVMEDIA_TYPE_VIDEO,
732 .id = AV_CODEC_ID_H263,
733 .priv_data_size = sizeof(MpegEncContext),
734 .init = ff_h263_decode_init,
735 .close = ff_h263_decode_end,
736 .decode = ff_h263_decode_frame,
737 .capabilities = AV_CODEC_CAP_DRAW_HORIZ_BAND | AV_CODEC_CAP_DR1 |
738 AV_CODEC_CAP_TRUNCATED | AV_CODEC_CAP_DELAY,
739 .caps_internal = FF_CODEC_CAP_SKIP_FRAME_FILL_PARAM,
740 .flush = ff_mpeg_flush,
742 .pix_fmts = ff_h263_hwaccel_pixfmt_list_420,
745 AVCodec ff_h263p_decoder = {
747 .long_name = NULL_IF_CONFIG_SMALL("H.263 / H.263-1996, H.263+ / H.263-1998 / H.263 version 2"),
748 .type = AVMEDIA_TYPE_VIDEO,
749 .id = AV_CODEC_ID_H263P,
750 .priv_data_size = sizeof(MpegEncContext),
751 .init = ff_h263_decode_init,
752 .close = ff_h263_decode_end,
753 .decode = ff_h263_decode_frame,
754 .capabilities = AV_CODEC_CAP_DRAW_HORIZ_BAND | AV_CODEC_CAP_DR1 |
755 AV_CODEC_CAP_TRUNCATED | AV_CODEC_CAP_DELAY,
756 .caps_internal = FF_CODEC_CAP_SKIP_FRAME_FILL_PARAM,
757 .flush = ff_mpeg_flush,
759 .pix_fmts = ff_h263_hwaccel_pixfmt_list_420,