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"
37 #include "mpeg4video.h"
38 #include "mpeg4video_parser.h"
39 #include "mpegvideo.h"
42 #include "vdpau_internal.h"
45 av_cold int ff_h263_decode_init(AVCodecContext *avctx)
47 MpegEncContext *s = avctx->priv_data;
51 s->out_format = FMT_H263;
52 s->width = avctx->coded_width;
53 s->height = avctx->coded_height;
54 s->workaround_bugs = avctx->workaround_bugs;
57 ff_MPV_decode_defaults(s);
58 s->quant_precision = 5;
59 s->decode_mb = ff_h263_decode_mb;
61 if (avctx->codec->id == AV_CODEC_ID_MSS2)
62 avctx->pix_fmt = AV_PIX_FMT_YUV420P;
64 avctx->pix_fmt = ff_get_format(avctx, avctx->codec->pix_fmts);
65 s->unrestricted_mv = 1;
67 /* select sub codec */
68 switch (avctx->codec->id) {
69 case AV_CODEC_ID_H263:
70 case AV_CODEC_ID_H263P:
71 s->unrestricted_mv = 0;
72 avctx->chroma_sample_location = AVCHROMA_LOC_CENTER;
74 case AV_CODEC_ID_MPEG4:
76 case AV_CODEC_ID_MSMPEG4V1:
78 s->msmpeg4_version = 1;
80 case AV_CODEC_ID_MSMPEG4V2:
82 s->msmpeg4_version = 2;
84 case AV_CODEC_ID_MSMPEG4V3:
86 s->msmpeg4_version = 3;
88 case AV_CODEC_ID_WMV1:
90 s->msmpeg4_version = 4;
92 case AV_CODEC_ID_WMV2:
94 s->msmpeg4_version = 5;
97 case AV_CODEC_ID_WMV3:
98 case AV_CODEC_ID_VC1IMAGE:
99 case AV_CODEC_ID_WMV3IMAGE:
100 case AV_CODEC_ID_MSS2:
102 s->msmpeg4_version = 6;
103 avctx->chroma_sample_location = AVCHROMA_LOC_LEFT;
105 case AV_CODEC_ID_H263I:
107 case AV_CODEC_ID_FLV1:
111 av_log(avctx, AV_LOG_ERROR, "Unsupported codec %d\n",
113 return AVERROR(ENOSYS);
115 s->codec_id = avctx->codec->id;
117 if (avctx->stream_codec_tag == AV_RL32("l263") && avctx->extradata_size == 56 && avctx->extradata[0] == 1)
120 /* for h263, we allocate the images after having read the header */
121 if (avctx->codec->id != AV_CODEC_ID_H263 &&
122 avctx->codec->id != AV_CODEC_ID_H263P &&
123 avctx->codec->id != AV_CODEC_ID_MPEG4)
124 if ((ret = ff_MPV_common_init(s)) < 0)
127 ff_h263dsp_init(&s->h263dsp);
128 ff_qpeldsp_init(&s->qdsp);
129 ff_h263_decode_init_vlc();
134 av_cold int ff_h263_decode_end(AVCodecContext *avctx)
136 MpegEncContext *s = avctx->priv_data;
138 ff_MPV_common_end(s);
143 * Return the number of bytes consumed for building the current frame.
145 static int get_consumed_bytes(MpegEncContext *s, int buf_size)
147 int pos = (get_bits_count(&s->gb) + 7) >> 3;
149 if (s->divx_packed || s->avctx->hwaccel) {
150 /* We would have to scan through the whole buf to handle the weird
153 } else if (s->flags & CODEC_FLAG_TRUNCATED) {
154 pos -= s->parse_context.last_index;
155 // padding is not really read so this might be -1
160 // avoid infinite loops (maybe not needed...)
164 if (pos + 10 > buf_size)
171 static int decode_slice(MpegEncContext *s)
173 const int part_mask = s->partitioned_frame
174 ? (ER_AC_END | ER_AC_ERROR) : 0x7F;
175 const int mb_size = 16 >> s->avctx->lowres;
178 s->last_resync_gb = s->gb;
179 s->first_slice_line = 1;
180 s->resync_mb_x = s->mb_x;
181 s->resync_mb_y = s->mb_y;
183 ff_set_qscale(s, s->qscale);
185 if (s->avctx->hwaccel) {
186 const uint8_t *start = s->gb.buffer + get_bits_count(&s->gb) / 8;
187 ret = s->avctx->hwaccel->decode_slice(s->avctx, start, s->gb.buffer_end - start);
188 // ensure we exit decode loop
189 s->mb_y = s->mb_height;
193 if (s->partitioned_frame) {
194 const int qscale = s->qscale;
196 if (CONFIG_MPEG4_DECODER && s->codec_id == AV_CODEC_ID_MPEG4)
197 if ((ret = ff_mpeg4_decode_partitions(s->avctx->priv_data)) < 0)
200 /* restore variables which were modified */
201 s->first_slice_line = 1;
202 s->mb_x = s->resync_mb_x;
203 s->mb_y = s->resync_mb_y;
204 ff_set_qscale(s, qscale);
207 for (; s->mb_y < s->mb_height; s->mb_y++) {
208 /* per-row end of slice checks */
209 if (s->msmpeg4_version) {
210 if (s->resync_mb_y + s->slice_height == s->mb_y) {
211 ff_er_add_slice(&s->er, s->resync_mb_x, s->resync_mb_y,
212 s->mb_x - 1, s->mb_y, ER_MB_END);
218 if (s->msmpeg4_version == 1) {
224 ff_init_block_index(s);
225 for (; s->mb_x < s->mb_width; s->mb_x++) {
228 ff_update_block_index(s);
230 if (s->resync_mb_x == s->mb_x && s->resync_mb_y + 1 == s->mb_y)
231 s->first_slice_line = 0;
235 s->mv_dir = MV_DIR_FORWARD;
236 s->mv_type = MV_TYPE_16X16;
237 av_dlog(s, "%d %d %06X\n",
238 ret, get_bits_count(&s->gb), show_bits(&s->gb, 24));
240 tprintf(NULL, "Decoding MB at %dx%d\n", s->mb_x, s->mb_y);
241 ret = s->decode_mb(s, s->block);
243 if (s->pict_type != AV_PICTURE_TYPE_B)
244 ff_h263_update_motion_val(s);
247 const int xy = s->mb_x + s->mb_y * s->mb_stride;
248 if (ret == SLICE_END) {
249 ff_MPV_decode_mb(s, s->block);
251 ff_h263_loop_filter(s);
253 ff_er_add_slice(&s->er, s->resync_mb_x, s->resync_mb_y,
254 s->mb_x, s->mb_y, ER_MB_END & part_mask);
256 s->padding_bug_score--;
258 if (++s->mb_x >= s->mb_width) {
260 ff_mpeg_draw_horiz_band(s, s->mb_y * mb_size, mb_size);
261 ff_MPV_report_decode_progress(s);
265 } else if (ret == SLICE_NOEND) {
266 av_log(s->avctx, AV_LOG_ERROR,
267 "Slice mismatch at MB: %d\n", xy);
268 ff_er_add_slice(&s->er, s->resync_mb_x, s->resync_mb_y,
269 s->mb_x + 1, s->mb_y,
270 ER_MB_END & part_mask);
271 return AVERROR_INVALIDDATA;
273 av_log(s->avctx, AV_LOG_ERROR, "Error at MB: %d\n", xy);
274 ff_er_add_slice(&s->er, s->resync_mb_x, s->resync_mb_y,
275 s->mb_x, s->mb_y, ER_MB_ERROR & part_mask);
277 if (s->err_recognition & AV_EF_IGNORE_ERR)
279 return AVERROR_INVALIDDATA;
282 ff_MPV_decode_mb(s, s->block);
284 ff_h263_loop_filter(s);
287 ff_mpeg_draw_horiz_band(s, s->mb_y * mb_size, mb_size);
288 ff_MPV_report_decode_progress(s);
293 av_assert1(s->mb_x == 0 && s->mb_y == s->mb_height);
295 if (s->codec_id == AV_CODEC_ID_MPEG4 &&
296 (s->workaround_bugs & FF_BUG_AUTODETECT) &&
297 get_bits_left(&s->gb) >= 48 &&
298 show_bits(&s->gb, 24) == 0x4010 &&
299 !s->data_partitioning)
300 s->padding_bug_score += 32;
302 /* try to detect the padding bug */
303 if (s->codec_id == AV_CODEC_ID_MPEG4 &&
304 (s->workaround_bugs & FF_BUG_AUTODETECT) &&
305 get_bits_left(&s->gb) >= 0 &&
306 get_bits_left(&s->gb) < 137 &&
307 !s->data_partitioning) {
308 const int bits_count = get_bits_count(&s->gb);
309 const int bits_left = s->gb.size_in_bits - bits_count;
311 if (bits_left == 0) {
312 s->padding_bug_score += 16;
313 } else if (bits_left != 1) {
314 int v = show_bits(&s->gb, 8);
315 v |= 0x7F >> (7 - (bits_count & 7));
317 if (v == 0x7F && bits_left <= 8)
318 s->padding_bug_score--;
319 else if (v == 0x7F && ((get_bits_count(&s->gb) + 8) & 8) &&
321 s->padding_bug_score += 4;
323 s->padding_bug_score++;
327 if (s->codec_id == AV_CODEC_ID_H263 &&
328 (s->workaround_bugs & FF_BUG_AUTODETECT) &&
329 get_bits_left(&s->gb) >= 8 &&
330 get_bits_left(&s->gb) < 300 &&
331 s->pict_type == AV_PICTURE_TYPE_I &&
332 show_bits(&s->gb, 8) == 0 &&
333 !s->data_partitioning) {
335 s->padding_bug_score += 32;
338 if (s->workaround_bugs & FF_BUG_AUTODETECT) {
339 if (s->padding_bug_score > -2 && !s->data_partitioning)
340 s->workaround_bugs |= FF_BUG_NO_PADDING;
342 s->workaround_bugs &= ~FF_BUG_NO_PADDING;
345 // handle formats which don't have unique end markers
346 if (s->msmpeg4_version || (s->workaround_bugs & FF_BUG_NO_PADDING)) { // FIXME perhaps solve this more cleanly
347 int left = get_bits_left(&s->gb);
350 /* no markers in M$ crap */
351 if (s->msmpeg4_version && s->pict_type == AV_PICTURE_TYPE_I)
354 /* buggy padding but the frame should still end approximately at
355 * the bitstream end */
356 if ((s->workaround_bugs & FF_BUG_NO_PADDING) &&
357 (s->err_recognition & (AV_EF_BUFFER|AV_EF_AGGRESSIVE)))
359 else if ((s->workaround_bugs & FF_BUG_NO_PADDING))
360 max_extra += 256 * 256 * 256 * 64;
362 if (left > max_extra)
363 av_log(s->avctx, AV_LOG_ERROR,
364 "discarding %d junk bits at end, next would be %X\n",
365 left, show_bits(&s->gb, 24));
367 av_log(s->avctx, AV_LOG_ERROR, "overreading %d bits\n", -left);
369 ff_er_add_slice(&s->er, s->resync_mb_x, s->resync_mb_y,
370 s->mb_x - 1, s->mb_y, ER_MB_END);
375 av_log(s->avctx, AV_LOG_ERROR,
376 "slice end not reached but screenspace end (%d left %06X, score= %d)\n",
377 get_bits_left(&s->gb), show_bits(&s->gb, 24), s->padding_bug_score);
379 ff_er_add_slice(&s->er, s->resync_mb_x, s->resync_mb_y, s->mb_x, s->mb_y,
380 ER_MB_END & part_mask);
382 return AVERROR_INVALIDDATA;
385 int ff_h263_decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
388 const uint8_t *buf = avpkt->data;
389 int buf_size = avpkt->size;
390 MpegEncContext *s = avctx->priv_data;
393 AVFrame *pict = data;
395 s->flags = avctx->flags;
396 s->flags2 = avctx->flags2;
398 /* no supplementary picture */
400 /* special case for last picture */
401 if (s->low_delay == 0 && s->next_picture_ptr) {
402 if ((ret = av_frame_ref(pict, s->next_picture_ptr->f)) < 0)
404 s->next_picture_ptr = NULL;
412 if (s->flags & CODEC_FLAG_TRUNCATED) {
415 if (CONFIG_MPEG4_DECODER && s->codec_id == AV_CODEC_ID_MPEG4) {
416 next = ff_mpeg4_find_frame_end(&s->parse_context, buf, buf_size);
417 } else if (CONFIG_H263_DECODER && s->codec_id == AV_CODEC_ID_H263) {
418 next = ff_h263_find_frame_end(&s->parse_context, buf, buf_size);
419 } else if (CONFIG_H263P_DECODER && s->codec_id == AV_CODEC_ID_H263P) {
420 next = ff_h263_find_frame_end(&s->parse_context, buf, buf_size);
422 av_log(s->avctx, AV_LOG_ERROR,
423 "this codec does not support truncated bitstreams\n");
424 return AVERROR(ENOSYS);
427 if (ff_combine_frame(&s->parse_context, next, (const uint8_t **)&buf,
433 if (s->divx_packed && s->bitstream_buffer_size) {
435 for(i=0; i < buf_size-3; i++) {
436 if (buf[i]==0 && buf[i+1]==0 && buf[i+2]==1) {
437 if (buf[i+3]==0xB0) {
438 av_log(s->avctx, AV_LOG_WARNING, "Discarding excessive bitstream in packed xvid\n");
439 s->bitstream_buffer_size = 0;
446 if (s->bitstream_buffer_size && (s->divx_packed || buf_size < 20)) // divx 5.01+/xvid frame reorder
447 ret = init_get_bits8(&s->gb, s->bitstream_buffer,
448 s->bitstream_buffer_size);
450 ret = init_get_bits8(&s->gb, buf, buf_size);
452 s->bitstream_buffer_size = 0;
456 if (!s->context_initialized)
457 // we need the idct permutaton for reading a custom matrix
458 if ((ret = ff_MPV_common_init(s)) < 0)
461 /* We need to set current_picture_ptr before reading the header,
462 * otherwise we cannot store anyting in there */
463 if (s->current_picture_ptr == NULL || s->current_picture_ptr->f->data[0]) {
464 int i = ff_find_unused_picture(s, 0);
467 s->current_picture_ptr = &s->picture[i];
471 if (CONFIG_WMV2_DECODER && s->msmpeg4_version == 5) {
472 ret = ff_wmv2_decode_picture_header(s);
473 } else if (CONFIG_MSMPEG4_DECODER && s->msmpeg4_version) {
474 ret = ff_msmpeg4_decode_picture_header(s);
475 } else if (CONFIG_MPEG4_DECODER && avctx->codec_id == AV_CODEC_ID_MPEG4) {
476 if (s->avctx->extradata_size && s->picture_number == 0) {
479 if (init_get_bits8(&gb, s->avctx->extradata, s->avctx->extradata_size) >= 0 )
480 ff_mpeg4_decode_picture_header(avctx->priv_data, &gb);
482 ret = ff_mpeg4_decode_picture_header(avctx->priv_data, &s->gb);
483 } else if (CONFIG_H263I_DECODER && s->codec_id == AV_CODEC_ID_H263I) {
484 ret = ff_intel_h263_decode_picture_header(s);
485 } else if (CONFIG_FLV_DECODER && s->h263_flv) {
486 ret = ff_flv_decode_picture_header(s);
488 ret = ff_h263_decode_picture_header(s);
491 if (ret < 0 || ret == FRAME_SKIPPED) {
492 if ( s->width != avctx->coded_width
493 || s->height != avctx->coded_height) {
494 av_log(s->avctx, AV_LOG_WARNING, "Reverting picture dimensions change due to header decoding failure\n");
495 s->width = avctx->coded_width;
496 s->height= avctx->coded_height;
499 if (ret == FRAME_SKIPPED)
500 return get_consumed_bytes(s, buf_size);
502 /* skip if the header was thrashed */
504 av_log(s->avctx, AV_LOG_ERROR, "header damaged\n");
508 avctx->has_b_frames = !s->low_delay;
510 if (CONFIG_MPEG4_DECODER && avctx->codec_id == AV_CODEC_ID_MPEG4) {
511 if (ff_mpeg4_workaround_bugs(avctx) == 1)
515 /* After H263 & mpeg4 header decode we have the height, width,
516 * and other parameters. So then we could init the picture.
517 * FIXME: By the way H263 decoder is evolving it should have
518 * an H263EncContext */
519 if (s->width != avctx->coded_width ||
520 s->height != avctx->coded_height ||
522 /* H.263 could change picture size any time */
523 s->context_reinit = 0;
525 ret = ff_set_dimensions(avctx, s->width, s->height);
529 if ((ret = ff_MPV_common_frame_size_change(s)))
533 if (s->codec_id == AV_CODEC_ID_H263 ||
534 s->codec_id == AV_CODEC_ID_H263P ||
535 s->codec_id == AV_CODEC_ID_H263I)
536 s->gob_index = ff_h263_get_gob_height(s);
538 // for skipping the frame
539 s->current_picture.f->pict_type = s->pict_type;
540 s->current_picture.f->key_frame = s->pict_type == AV_PICTURE_TYPE_I;
542 /* skip B-frames if we don't have reference frames */
543 if (s->last_picture_ptr == NULL &&
544 (s->pict_type == AV_PICTURE_TYPE_B || s->droppable))
545 return get_consumed_bytes(s, buf_size);
546 if ((avctx->skip_frame >= AVDISCARD_NONREF &&
547 s->pict_type == AV_PICTURE_TYPE_B) ||
548 (avctx->skip_frame >= AVDISCARD_NONKEY &&
549 s->pict_type != AV_PICTURE_TYPE_I) ||
550 avctx->skip_frame >= AVDISCARD_ALL)
551 return get_consumed_bytes(s, buf_size);
553 if (s->next_p_frame_damaged) {
554 if (s->pict_type == AV_PICTURE_TYPE_B)
555 return get_consumed_bytes(s, buf_size);
557 s->next_p_frame_damaged = 0;
560 if ((!s->no_rounding) || s->pict_type == AV_PICTURE_TYPE_B) {
561 s->me.qpel_put = s->qdsp.put_qpel_pixels_tab;
562 s->me.qpel_avg = s->qdsp.avg_qpel_pixels_tab;
564 s->me.qpel_put = s->qdsp.put_no_rnd_qpel_pixels_tab;
565 s->me.qpel_avg = s->qdsp.avg_qpel_pixels_tab;
568 if ((ret = ff_MPV_frame_start(s, avctx)) < 0)
571 if (!s->divx_packed && !avctx->hwaccel)
572 ff_thread_finish_setup(avctx);
574 if (CONFIG_MPEG4_VDPAU_DECODER && (s->avctx->codec->capabilities & CODEC_CAP_HWACCEL_VDPAU)) {
575 ff_vdpau_mpeg4_decode_picture(avctx->priv_data, s->gb.buffer, s->gb.buffer_end - s->gb.buffer);
579 if (avctx->hwaccel) {
580 ret = avctx->hwaccel->start_frame(avctx, s->gb.buffer,
581 s->gb.buffer_end - s->gb.buffer);
586 ff_mpeg_er_frame_start(s);
588 /* the second part of the wmv2 header contains the MB skip bits which
589 * are stored in current_picture->mb_type which is not available before
590 * ff_MPV_frame_start() */
591 if (CONFIG_WMV2_DECODER && s->msmpeg4_version == 5) {
592 ret = ff_wmv2_decode_secondary_picture_header(s);
599 /* decode each macroblock */
603 slice_ret = decode_slice(s);
604 while (s->mb_y < s->mb_height) {
605 if (s->msmpeg4_version) {
606 if (s->slice_height == 0 || s->mb_x != 0 ||
607 (s->mb_y % s->slice_height) != 0 || get_bits_left(&s->gb) < 0)
610 int prev_x = s->mb_x, prev_y = s->mb_y;
611 if (ff_h263_resync(s) < 0)
613 if (prev_y * s->mb_width + prev_x < s->mb_y * s->mb_width + s->mb_x)
614 s->er.error_occurred = 1;
617 if (s->msmpeg4_version < 4 && s->h263_pred)
618 ff_mpeg4_clean_buffers(s);
620 if (decode_slice(s) < 0)
621 slice_ret = AVERROR_INVALIDDATA;
624 if (s->msmpeg4_version && s->msmpeg4_version < 4 &&
625 s->pict_type == AV_PICTURE_TYPE_I)
626 if (!CONFIG_MSMPEG4_DECODER ||
627 ff_msmpeg4_decode_ext_header(s, buf_size) < 0)
628 s->er.error_status_table[s->mb_num - 1] = ER_MB_ERROR;
630 av_assert1(s->bitstream_buffer_size == 0);
632 ff_er_frame_end(&s->er);
634 if (avctx->hwaccel) {
635 ret = avctx->hwaccel->end_frame(avctx);
642 if (CONFIG_MPEG4_DECODER && avctx->codec_id == AV_CODEC_ID_MPEG4)
643 ff_mpeg4_frame_end(avctx, buf, buf_size);
645 if (!s->divx_packed && avctx->hwaccel)
646 ff_thread_finish_setup(avctx);
648 av_assert1(s->current_picture.f->pict_type == s->current_picture_ptr->f->pict_type);
649 av_assert1(s->current_picture.f->pict_type == s->pict_type);
650 if (s->pict_type == AV_PICTURE_TYPE_B || s->low_delay) {
651 if ((ret = av_frame_ref(pict, s->current_picture_ptr->f)) < 0)
653 ff_print_debug_info(s, s->current_picture_ptr, pict);
654 ff_mpv_export_qp_table(s, pict, s->current_picture_ptr, FF_QSCALE_TYPE_MPEG1);
655 } else if (s->last_picture_ptr != NULL) {
656 if ((ret = av_frame_ref(pict, s->last_picture_ptr->f)) < 0)
658 ff_print_debug_info(s, s->last_picture_ptr, pict);
659 ff_mpv_export_qp_table(s, pict, s->last_picture_ptr, FF_QSCALE_TYPE_MPEG1);
662 if (s->last_picture_ptr || s->low_delay) {
663 if ( pict->format == AV_PIX_FMT_YUV420P
664 && (s->codec_tag == AV_RL32("GEOV") || s->codec_tag == AV_RL32("GEOX"))) {
666 av_frame_make_writable(pict);
667 for (p=0; p<3; p++) {
668 int w = FF_CEIL_RSHIFT(pict-> width, !!p);
669 int h = FF_CEIL_RSHIFT(pict->height, !!p);
670 int linesize = pict->linesize[p];
671 for (y=0; y<(h>>1); y++)
674 pict->data[p][x + y*linesize],
675 pict->data[p][x + (h-1-y)*linesize]);
681 if (slice_ret < 0 && (avctx->err_recognition & AV_EF_EXPLODE))
684 return get_consumed_bytes(s, buf_size);
687 const enum AVPixelFormat ff_h263_hwaccel_pixfmt_list_420[] = {
688 #if CONFIG_H263_VAAPI_HWACCEL || CONFIG_MPEG4_VAAPI_HWACCEL
689 AV_PIX_FMT_VAAPI_VLD,
691 #if CONFIG_H263_VDPAU_HWACCEL || CONFIG_MPEG4_VDPAU_HWACCEL
698 AVCodec ff_h263_decoder = {
700 .long_name = NULL_IF_CONFIG_SMALL("H.263 / H.263-1996, H.263+ / H.263-1998 / H.263 version 2"),
701 .type = AVMEDIA_TYPE_VIDEO,
702 .id = AV_CODEC_ID_H263,
703 .priv_data_size = sizeof(MpegEncContext),
704 .init = ff_h263_decode_init,
705 .close = ff_h263_decode_end,
706 .decode = ff_h263_decode_frame,
707 .capabilities = CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1 |
708 CODEC_CAP_TRUNCATED | CODEC_CAP_DELAY,
709 .flush = ff_mpeg_flush,
711 .pix_fmts = ff_h263_hwaccel_pixfmt_list_420,
714 AVCodec ff_h263p_decoder = {
716 .long_name = NULL_IF_CONFIG_SMALL("H.263 / H.263-1996, H.263+ / H.263-1998 / H.263 version 2"),
717 .type = AVMEDIA_TYPE_VIDEO,
718 .id = AV_CODEC_ID_H263P,
719 .priv_data_size = sizeof(MpegEncContext),
720 .init = ff_h263_decode_init,
721 .close = ff_h263_decode_end,
722 .decode = ff_h263_decode_frame,
723 .capabilities = CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1 |
724 CODEC_CAP_TRUNCATED | CODEC_CAP_DELAY,
725 .flush = ff_mpeg_flush,
727 .pix_fmts = ff_h263_hwaccel_pixfmt_list_420,