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
29 #include "libavutil/atomic.h"
30 #include "libavutil/attributes.h"
31 #include "libavutil/avassert.h"
32 #include "libavutil/avstring.h"
33 #include "libavutil/bprint.h"
34 #include "libavutil/channel_layout.h"
35 #include "libavutil/crc.h"
36 #include "libavutil/frame.h"
37 #include "libavutil/internal.h"
38 #include "libavutil/mathematics.h"
39 #include "libavutil/mem_internal.h"
40 #include "libavutil/pixdesc.h"
41 #include "libavutil/imgutils.h"
42 #include "libavutil/samplefmt.h"
43 #include "libavutil/dict.h"
44 #include "libavutil/thread.h"
46 #include "libavutil/opt.h"
48 #include "mpegvideo.h"
50 #include "frame_thread_encoder.h"
53 #include "bytestream.h"
63 #include "libavutil/ffversion.h"
64 const char av_codec_ffversion[] = "FFmpeg version " FFMPEG_VERSION;
66 #if HAVE_PTHREADS || HAVE_W32THREADS || HAVE_OS2THREADS
67 static int default_lockmgr_cb(void **arg, enum AVLockOp op)
69 void * volatile * mutex = arg;
77 pthread_mutex_t *tmp = av_malloc(sizeof(pthread_mutex_t));
79 return AVERROR(ENOMEM);
80 if ((err = pthread_mutex_init(tmp, NULL))) {
84 if (avpriv_atomic_ptr_cas(mutex, NULL, tmp)) {
85 pthread_mutex_destroy(tmp);
90 if ((err = pthread_mutex_lock(*mutex)))
95 if ((err = pthread_mutex_unlock(*mutex)))
101 pthread_mutex_destroy(*mutex);
103 avpriv_atomic_ptr_cas(mutex, *mutex, NULL);
108 static int (*lockmgr_cb)(void **mutex, enum AVLockOp op) = default_lockmgr_cb;
110 static int (*lockmgr_cb)(void **mutex, enum AVLockOp op) = NULL;
114 volatile int ff_avcodec_locked;
115 static int volatile entangled_thread_counter = 0;
116 static void *codec_mutex;
117 static void *avformat_mutex;
119 void av_fast_padded_malloc(void *ptr, unsigned int *size, size_t min_size)
122 if (min_size > SIZE_MAX - AV_INPUT_BUFFER_PADDING_SIZE) {
127 if (!ff_fast_malloc(p, size, min_size + AV_INPUT_BUFFER_PADDING_SIZE, 1))
128 memset(*p + min_size, 0, AV_INPUT_BUFFER_PADDING_SIZE);
131 void av_fast_padded_mallocz(void *ptr, unsigned int *size, size_t min_size)
134 if (min_size > SIZE_MAX - AV_INPUT_BUFFER_PADDING_SIZE) {
139 if (!ff_fast_malloc(p, size, min_size + AV_INPUT_BUFFER_PADDING_SIZE, 1))
140 memset(*p, 0, min_size + AV_INPUT_BUFFER_PADDING_SIZE);
143 /* encoder management */
144 static AVCodec *first_avcodec = NULL;
145 static AVCodec **last_avcodec = &first_avcodec;
147 AVCodec *av_codec_next(const AVCodec *c)
152 return first_avcodec;
155 static av_cold void avcodec_init(void)
157 static int initialized = 0;
159 if (initialized != 0)
164 ff_me_cmp_init_static();
167 int av_codec_is_encoder(const AVCodec *codec)
169 return codec && (codec->encode_sub || codec->encode2);
172 int av_codec_is_decoder(const AVCodec *codec)
174 return codec && codec->decode;
177 av_cold void avcodec_register(AVCodec *codec)
184 while(*p || avpriv_atomic_ptr_cas((void * volatile *)p, NULL, codec))
186 last_avcodec = &codec->next;
188 if (codec->init_static_data)
189 codec->init_static_data(codec);
193 unsigned avcodec_get_edge_width(void)
199 #if FF_API_SET_DIMENSIONS
200 void avcodec_set_dimensions(AVCodecContext *s, int width, int height)
202 int ret = ff_set_dimensions(s, width, height);
204 av_log(s, AV_LOG_WARNING, "Failed to set dimensions %d %d\n", width, height);
209 int ff_set_dimensions(AVCodecContext *s, int width, int height)
211 int ret = av_image_check_size(width, height, 0, s);
216 s->coded_width = width;
217 s->coded_height = height;
218 s->width = AV_CEIL_RSHIFT(width, s->lowres);
219 s->height = AV_CEIL_RSHIFT(height, s->lowres);
224 int ff_set_sar(AVCodecContext *avctx, AVRational sar)
226 int ret = av_image_check_sar(avctx->width, avctx->height, sar);
229 av_log(avctx, AV_LOG_WARNING, "ignoring invalid SAR: %d/%d\n",
231 avctx->sample_aspect_ratio = (AVRational){ 0, 1 };
234 avctx->sample_aspect_ratio = sar;
239 int ff_side_data_update_matrix_encoding(AVFrame *frame,
240 enum AVMatrixEncoding matrix_encoding)
242 AVFrameSideData *side_data;
243 enum AVMatrixEncoding *data;
245 side_data = av_frame_get_side_data(frame, AV_FRAME_DATA_MATRIXENCODING);
247 side_data = av_frame_new_side_data(frame, AV_FRAME_DATA_MATRIXENCODING,
248 sizeof(enum AVMatrixEncoding));
251 return AVERROR(ENOMEM);
253 data = (enum AVMatrixEncoding*)side_data->data;
254 *data = matrix_encoding;
259 void avcodec_align_dimensions2(AVCodecContext *s, int *width, int *height,
260 int linesize_align[AV_NUM_DATA_POINTERS])
265 AVPixFmtDescriptor const *desc = av_pix_fmt_desc_get(s->pix_fmt);
268 w_align = 1 << desc->log2_chroma_w;
269 h_align = 1 << desc->log2_chroma_h;
272 switch (s->pix_fmt) {
273 case AV_PIX_FMT_YUV420P:
274 case AV_PIX_FMT_YUYV422:
275 case AV_PIX_FMT_YVYU422:
276 case AV_PIX_FMT_UYVY422:
277 case AV_PIX_FMT_YUV422P:
278 case AV_PIX_FMT_YUV440P:
279 case AV_PIX_FMT_YUV444P:
280 case AV_PIX_FMT_GBRP:
281 case AV_PIX_FMT_GBRAP:
282 case AV_PIX_FMT_GRAY8:
283 case AV_PIX_FMT_GRAY16BE:
284 case AV_PIX_FMT_GRAY16LE:
285 case AV_PIX_FMT_YUVJ420P:
286 case AV_PIX_FMT_YUVJ422P:
287 case AV_PIX_FMT_YUVJ440P:
288 case AV_PIX_FMT_YUVJ444P:
289 case AV_PIX_FMT_YUVA420P:
290 case AV_PIX_FMT_YUVA422P:
291 case AV_PIX_FMT_YUVA444P:
292 case AV_PIX_FMT_YUV420P9LE:
293 case AV_PIX_FMT_YUV420P9BE:
294 case AV_PIX_FMT_YUV420P10LE:
295 case AV_PIX_FMT_YUV420P10BE:
296 case AV_PIX_FMT_YUV420P12LE:
297 case AV_PIX_FMT_YUV420P12BE:
298 case AV_PIX_FMT_YUV420P14LE:
299 case AV_PIX_FMT_YUV420P14BE:
300 case AV_PIX_FMT_YUV420P16LE:
301 case AV_PIX_FMT_YUV420P16BE:
302 case AV_PIX_FMT_YUVA420P9LE:
303 case AV_PIX_FMT_YUVA420P9BE:
304 case AV_PIX_FMT_YUVA420P10LE:
305 case AV_PIX_FMT_YUVA420P10BE:
306 case AV_PIX_FMT_YUVA420P16LE:
307 case AV_PIX_FMT_YUVA420P16BE:
308 case AV_PIX_FMT_YUV422P9LE:
309 case AV_PIX_FMT_YUV422P9BE:
310 case AV_PIX_FMT_YUV422P10LE:
311 case AV_PIX_FMT_YUV422P10BE:
312 case AV_PIX_FMT_YUV422P12LE:
313 case AV_PIX_FMT_YUV422P12BE:
314 case AV_PIX_FMT_YUV422P14LE:
315 case AV_PIX_FMT_YUV422P14BE:
316 case AV_PIX_FMT_YUV422P16LE:
317 case AV_PIX_FMT_YUV422P16BE:
318 case AV_PIX_FMT_YUVA422P9LE:
319 case AV_PIX_FMT_YUVA422P9BE:
320 case AV_PIX_FMT_YUVA422P10LE:
321 case AV_PIX_FMT_YUVA422P10BE:
322 case AV_PIX_FMT_YUVA422P16LE:
323 case AV_PIX_FMT_YUVA422P16BE:
324 case AV_PIX_FMT_YUV440P10LE:
325 case AV_PIX_FMT_YUV440P10BE:
326 case AV_PIX_FMT_YUV440P12LE:
327 case AV_PIX_FMT_YUV440P12BE:
328 case AV_PIX_FMT_YUV444P9LE:
329 case AV_PIX_FMT_YUV444P9BE:
330 case AV_PIX_FMT_YUV444P10LE:
331 case AV_PIX_FMT_YUV444P10BE:
332 case AV_PIX_FMT_YUV444P12LE:
333 case AV_PIX_FMT_YUV444P12BE:
334 case AV_PIX_FMT_YUV444P14LE:
335 case AV_PIX_FMT_YUV444P14BE:
336 case AV_PIX_FMT_YUV444P16LE:
337 case AV_PIX_FMT_YUV444P16BE:
338 case AV_PIX_FMT_YUVA444P9LE:
339 case AV_PIX_FMT_YUVA444P9BE:
340 case AV_PIX_FMT_YUVA444P10LE:
341 case AV_PIX_FMT_YUVA444P10BE:
342 case AV_PIX_FMT_YUVA444P16LE:
343 case AV_PIX_FMT_YUVA444P16BE:
344 case AV_PIX_FMT_GBRP9LE:
345 case AV_PIX_FMT_GBRP9BE:
346 case AV_PIX_FMT_GBRP10LE:
347 case AV_PIX_FMT_GBRP10BE:
348 case AV_PIX_FMT_GBRP12LE:
349 case AV_PIX_FMT_GBRP12BE:
350 case AV_PIX_FMT_GBRP14LE:
351 case AV_PIX_FMT_GBRP14BE:
352 case AV_PIX_FMT_GBRP16LE:
353 case AV_PIX_FMT_GBRP16BE:
354 w_align = 16; //FIXME assume 16 pixel per macroblock
355 h_align = 16 * 2; // interlaced needs 2 macroblocks height
357 case AV_PIX_FMT_YUV411P:
358 case AV_PIX_FMT_YUVJ411P:
359 case AV_PIX_FMT_UYYVYY411:
363 case AV_PIX_FMT_YUV410P:
364 if (s->codec_id == AV_CODEC_ID_SVQ1) {
369 case AV_PIX_FMT_RGB555:
370 if (s->codec_id == AV_CODEC_ID_RPZA) {
375 case AV_PIX_FMT_PAL8:
376 case AV_PIX_FMT_BGR8:
377 case AV_PIX_FMT_RGB8:
378 if (s->codec_id == AV_CODEC_ID_SMC ||
379 s->codec_id == AV_CODEC_ID_CINEPAK) {
383 if (s->codec_id == AV_CODEC_ID_JV) {
388 case AV_PIX_FMT_BGR24:
389 if ((s->codec_id == AV_CODEC_ID_MSZH) ||
390 (s->codec_id == AV_CODEC_ID_ZLIB)) {
395 case AV_PIX_FMT_RGB24:
396 if (s->codec_id == AV_CODEC_ID_CINEPAK) {
405 if (s->codec_id == AV_CODEC_ID_IFF_ILBM) {
406 w_align = FFMAX(w_align, 8);
409 *width = FFALIGN(*width, w_align);
410 *height = FFALIGN(*height, h_align);
411 if (s->codec_id == AV_CODEC_ID_H264 || s->lowres) {
412 // some of the optimized chroma MC reads one line too much
413 // which is also done in mpeg decoders with lowres > 0
416 // H.264 uses edge emulation for out of frame motion vectors, for this
417 // it requires a temporary area large enough to hold a 21x21 block,
418 // increasing witdth ensure that the temporary area is large enough,
419 // the next rounded up width is 32
420 *width = FFMAX(*width, 32);
423 for (i = 0; i < 4; i++)
424 linesize_align[i] = STRIDE_ALIGN;
427 void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height)
429 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(s->pix_fmt);
430 int chroma_shift = desc->log2_chroma_w;
431 int linesize_align[AV_NUM_DATA_POINTERS];
434 avcodec_align_dimensions2(s, width, height, linesize_align);
435 align = FFMAX(linesize_align[0], linesize_align[3]);
436 linesize_align[1] <<= chroma_shift;
437 linesize_align[2] <<= chroma_shift;
438 align = FFMAX3(align, linesize_align[1], linesize_align[2]);
439 *width = FFALIGN(*width, align);
442 int avcodec_enum_to_chroma_pos(int *xpos, int *ypos, enum AVChromaLocation pos)
444 if (pos <= AVCHROMA_LOC_UNSPECIFIED || pos >= AVCHROMA_LOC_NB)
445 return AVERROR(EINVAL);
448 *xpos = (pos&1) * 128;
449 *ypos = ((pos>>1)^(pos<4)) * 128;
454 enum AVChromaLocation avcodec_chroma_pos_to_enum(int xpos, int ypos)
458 for (pos = AVCHROMA_LOC_UNSPECIFIED + 1; pos < AVCHROMA_LOC_NB; pos++) {
459 if (avcodec_enum_to_chroma_pos(&xout, &yout, pos) == 0 && xout == xpos && yout == ypos)
462 return AVCHROMA_LOC_UNSPECIFIED;
465 int avcodec_fill_audio_frame(AVFrame *frame, int nb_channels,
466 enum AVSampleFormat sample_fmt, const uint8_t *buf,
467 int buf_size, int align)
469 int ch, planar, needed_size, ret = 0;
471 needed_size = av_samples_get_buffer_size(NULL, nb_channels,
472 frame->nb_samples, sample_fmt,
474 if (buf_size < needed_size)
475 return AVERROR(EINVAL);
477 planar = av_sample_fmt_is_planar(sample_fmt);
478 if (planar && nb_channels > AV_NUM_DATA_POINTERS) {
479 if (!(frame->extended_data = av_mallocz_array(nb_channels,
480 sizeof(*frame->extended_data))))
481 return AVERROR(ENOMEM);
483 frame->extended_data = frame->data;
486 if ((ret = av_samples_fill_arrays(frame->extended_data, &frame->linesize[0],
487 (uint8_t *)(intptr_t)buf, nb_channels, frame->nb_samples,
488 sample_fmt, align)) < 0) {
489 if (frame->extended_data != frame->data)
490 av_freep(&frame->extended_data);
493 if (frame->extended_data != frame->data) {
494 for (ch = 0; ch < AV_NUM_DATA_POINTERS; ch++)
495 frame->data[ch] = frame->extended_data[ch];
501 static int update_frame_pool(AVCodecContext *avctx, AVFrame *frame)
503 FramePool *pool = avctx->internal->pool;
506 switch (avctx->codec_type) {
507 case AVMEDIA_TYPE_VIDEO: {
511 int w = frame->width;
512 int h = frame->height;
513 int tmpsize, unaligned;
515 if (pool->format == frame->format &&
516 pool->width == frame->width && pool->height == frame->height)
519 avcodec_align_dimensions2(avctx, &w, &h, pool->stride_align);
522 // NOTE: do not align linesizes individually, this breaks e.g. assumptions
523 // that linesize[0] == 2*linesize[1] in the MPEG-encoder for 4:2:2
524 ret = av_image_fill_linesizes(linesize, avctx->pix_fmt, w);
527 // increase alignment of w for next try (rhs gives the lowest bit set in w)
531 for (i = 0; i < 4; i++)
532 unaligned |= linesize[i] % pool->stride_align[i];
535 tmpsize = av_image_fill_pointers(data, avctx->pix_fmt, h,
540 for (i = 0; i < 3 && data[i + 1]; i++)
541 size[i] = data[i + 1] - data[i];
542 size[i] = tmpsize - (data[i] - data[0]);
544 for (i = 0; i < 4; i++) {
545 av_buffer_pool_uninit(&pool->pools[i]);
546 pool->linesize[i] = linesize[i];
548 pool->pools[i] = av_buffer_pool_init(size[i] + 16 + STRIDE_ALIGN - 1,
549 CONFIG_MEMORY_POISONING ?
552 if (!pool->pools[i]) {
553 ret = AVERROR(ENOMEM);
558 pool->format = frame->format;
559 pool->width = frame->width;
560 pool->height = frame->height;
564 case AVMEDIA_TYPE_AUDIO: {
565 int ch = av_frame_get_channels(frame); //av_get_channel_layout_nb_channels(frame->channel_layout);
566 int planar = av_sample_fmt_is_planar(frame->format);
567 int planes = planar ? ch : 1;
569 if (pool->format == frame->format && pool->planes == planes &&
570 pool->channels == ch && frame->nb_samples == pool->samples)
573 av_buffer_pool_uninit(&pool->pools[0]);
574 ret = av_samples_get_buffer_size(&pool->linesize[0], ch,
575 frame->nb_samples, frame->format, 0);
579 pool->pools[0] = av_buffer_pool_init(pool->linesize[0], NULL);
580 if (!pool->pools[0]) {
581 ret = AVERROR(ENOMEM);
585 pool->format = frame->format;
586 pool->planes = planes;
588 pool->samples = frame->nb_samples;
591 default: av_assert0(0);
595 for (i = 0; i < 4; i++)
596 av_buffer_pool_uninit(&pool->pools[i]);
598 pool->planes = pool->channels = pool->samples = 0;
599 pool->width = pool->height = 0;
603 static int audio_get_buffer(AVCodecContext *avctx, AVFrame *frame)
605 FramePool *pool = avctx->internal->pool;
606 int planes = pool->planes;
609 frame->linesize[0] = pool->linesize[0];
611 if (planes > AV_NUM_DATA_POINTERS) {
612 frame->extended_data = av_mallocz_array(planes, sizeof(*frame->extended_data));
613 frame->nb_extended_buf = planes - AV_NUM_DATA_POINTERS;
614 frame->extended_buf = av_mallocz_array(frame->nb_extended_buf,
615 sizeof(*frame->extended_buf));
616 if (!frame->extended_data || !frame->extended_buf) {
617 av_freep(&frame->extended_data);
618 av_freep(&frame->extended_buf);
619 return AVERROR(ENOMEM);
622 frame->extended_data = frame->data;
623 av_assert0(frame->nb_extended_buf == 0);
626 for (i = 0; i < FFMIN(planes, AV_NUM_DATA_POINTERS); i++) {
627 frame->buf[i] = av_buffer_pool_get(pool->pools[0]);
630 frame->extended_data[i] = frame->data[i] = frame->buf[i]->data;
632 for (i = 0; i < frame->nb_extended_buf; i++) {
633 frame->extended_buf[i] = av_buffer_pool_get(pool->pools[0]);
634 if (!frame->extended_buf[i])
636 frame->extended_data[i + AV_NUM_DATA_POINTERS] = frame->extended_buf[i]->data;
639 if (avctx->debug & FF_DEBUG_BUFFERS)
640 av_log(avctx, AV_LOG_DEBUG, "default_get_buffer called on frame %p", frame);
644 av_frame_unref(frame);
645 return AVERROR(ENOMEM);
648 static int video_get_buffer(AVCodecContext *s, AVFrame *pic)
650 FramePool *pool = s->internal->pool;
651 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pic->format);
655 av_log(s, AV_LOG_ERROR, "pic->data[0]!=NULL in avcodec_default_get_buffer\n");
660 av_log(s, AV_LOG_ERROR,
661 "Unable to get pixel format descriptor for format %s\n",
662 av_get_pix_fmt_name(pic->format));
663 return AVERROR(EINVAL);
666 memset(pic->data, 0, sizeof(pic->data));
667 pic->extended_data = pic->data;
669 for (i = 0; i < 4 && pool->pools[i]; i++) {
670 pic->linesize[i] = pool->linesize[i];
672 pic->buf[i] = av_buffer_pool_get(pool->pools[i]);
676 pic->data[i] = pic->buf[i]->data;
678 for (; i < AV_NUM_DATA_POINTERS; i++) {
680 pic->linesize[i] = 0;
682 if (desc->flags & AV_PIX_FMT_FLAG_PAL ||
683 desc->flags & AV_PIX_FMT_FLAG_PSEUDOPAL)
684 avpriv_set_systematic_pal2((uint32_t *)pic->data[1], pic->format);
686 if (s->debug & FF_DEBUG_BUFFERS)
687 av_log(s, AV_LOG_DEBUG, "default_get_buffer called on pic %p\n", pic);
692 return AVERROR(ENOMEM);
695 void ff_color_frame(AVFrame *frame, const int c[4])
697 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(frame->format);
700 av_assert0(desc->flags & AV_PIX_FMT_FLAG_PLANAR);
702 for (p = 0; p<desc->nb_components; p++) {
703 uint8_t *dst = frame->data[p];
704 int is_chroma = p == 1 || p == 2;
705 int bytes = is_chroma ? AV_CEIL_RSHIFT(frame->width, desc->log2_chroma_w) : frame->width;
706 int height = is_chroma ? AV_CEIL_RSHIFT(frame->height, desc->log2_chroma_h) : frame->height;
707 for (y = 0; y < height; y++) {
708 if (desc->comp[0].depth >= 9) {
709 for (x = 0; x<bytes; x++)
710 ((uint16_t*)dst)[x] = c[p];
712 memset(dst, c[p], bytes);
713 dst += frame->linesize[p];
718 int avcodec_default_get_buffer2(AVCodecContext *avctx, AVFrame *frame, int flags)
722 if ((ret = update_frame_pool(avctx, frame)) < 0)
725 switch (avctx->codec_type) {
726 case AVMEDIA_TYPE_VIDEO:
727 return video_get_buffer(avctx, frame);
728 case AVMEDIA_TYPE_AUDIO:
729 return audio_get_buffer(avctx, frame);
735 static int add_metadata_from_side_data(AVPacket *avpkt, AVFrame *frame)
738 const uint8_t *side_metadata;
740 AVDictionary **frame_md = avpriv_frame_get_metadatap(frame);
742 side_metadata = av_packet_get_side_data(avpkt,
743 AV_PKT_DATA_STRINGS_METADATA, &size);
744 return av_packet_unpack_dictionary(side_metadata, size, frame_md);
747 int ff_init_buffer_info(AVCodecContext *avctx, AVFrame *frame)
749 AVPacket *pkt = avctx->internal->pkt;
751 static const struct {
752 enum AVPacketSideDataType packet;
753 enum AVFrameSideDataType frame;
755 { AV_PKT_DATA_REPLAYGAIN , AV_FRAME_DATA_REPLAYGAIN },
756 { AV_PKT_DATA_DISPLAYMATRIX, AV_FRAME_DATA_DISPLAYMATRIX },
757 { AV_PKT_DATA_STEREO3D, AV_FRAME_DATA_STEREO3D },
758 { AV_PKT_DATA_AUDIO_SERVICE_TYPE, AV_FRAME_DATA_AUDIO_SERVICE_TYPE },
762 frame->pkt_pts = pkt->pts;
763 av_frame_set_pkt_pos (frame, pkt->pos);
764 av_frame_set_pkt_duration(frame, pkt->duration);
765 av_frame_set_pkt_size (frame, pkt->size);
767 for (i = 0; i < FF_ARRAY_ELEMS(sd); i++) {
769 uint8_t *packet_sd = av_packet_get_side_data(pkt, sd[i].packet, &size);
771 AVFrameSideData *frame_sd = av_frame_new_side_data(frame,
775 return AVERROR(ENOMEM);
777 memcpy(frame_sd->data, packet_sd, size);
780 add_metadata_from_side_data(pkt, frame);
782 frame->pkt_pts = AV_NOPTS_VALUE;
783 av_frame_set_pkt_pos (frame, -1);
784 av_frame_set_pkt_duration(frame, 0);
785 av_frame_set_pkt_size (frame, -1);
787 frame->reordered_opaque = avctx->reordered_opaque;
789 if (frame->color_primaries == AVCOL_PRI_UNSPECIFIED)
790 frame->color_primaries = avctx->color_primaries;
791 if (frame->color_trc == AVCOL_TRC_UNSPECIFIED)
792 frame->color_trc = avctx->color_trc;
793 if (av_frame_get_colorspace(frame) == AVCOL_SPC_UNSPECIFIED)
794 av_frame_set_colorspace(frame, avctx->colorspace);
795 if (av_frame_get_color_range(frame) == AVCOL_RANGE_UNSPECIFIED)
796 av_frame_set_color_range(frame, avctx->color_range);
797 if (frame->chroma_location == AVCHROMA_LOC_UNSPECIFIED)
798 frame->chroma_location = avctx->chroma_sample_location;
800 switch (avctx->codec->type) {
801 case AVMEDIA_TYPE_VIDEO:
802 frame->format = avctx->pix_fmt;
803 if (!frame->sample_aspect_ratio.num)
804 frame->sample_aspect_ratio = avctx->sample_aspect_ratio;
806 if (frame->width && frame->height &&
807 av_image_check_sar(frame->width, frame->height,
808 frame->sample_aspect_ratio) < 0) {
809 av_log(avctx, AV_LOG_WARNING, "ignoring invalid SAR: %u/%u\n",
810 frame->sample_aspect_ratio.num,
811 frame->sample_aspect_ratio.den);
812 frame->sample_aspect_ratio = (AVRational){ 0, 1 };
816 case AVMEDIA_TYPE_AUDIO:
817 if (!frame->sample_rate)
818 frame->sample_rate = avctx->sample_rate;
819 if (frame->format < 0)
820 frame->format = avctx->sample_fmt;
821 if (!frame->channel_layout) {
822 if (avctx->channel_layout) {
823 if (av_get_channel_layout_nb_channels(avctx->channel_layout) !=
825 av_log(avctx, AV_LOG_ERROR, "Inconsistent channel "
827 return AVERROR(EINVAL);
830 frame->channel_layout = avctx->channel_layout;
832 if (avctx->channels > FF_SANE_NB_CHANNELS) {
833 av_log(avctx, AV_LOG_ERROR, "Too many channels: %d.\n",
835 return AVERROR(ENOSYS);
839 av_frame_set_channels(frame, avctx->channels);
845 int ff_decode_frame_props(AVCodecContext *avctx, AVFrame *frame)
847 return ff_init_buffer_info(avctx, frame);
850 static int get_buffer_internal(AVCodecContext *avctx, AVFrame *frame, int flags)
852 const AVHWAccel *hwaccel = avctx->hwaccel;
853 int override_dimensions = 1;
856 if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
857 if ((ret = av_image_check_size(avctx->width, avctx->height, 0, avctx)) < 0 || avctx->pix_fmt<0) {
858 av_log(avctx, AV_LOG_ERROR, "video_get_buffer: image parameters invalid\n");
859 return AVERROR(EINVAL);
862 if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
863 if (frame->width <= 0 || frame->height <= 0) {
864 frame->width = FFMAX(avctx->width, AV_CEIL_RSHIFT(avctx->coded_width, avctx->lowres));
865 frame->height = FFMAX(avctx->height, AV_CEIL_RSHIFT(avctx->coded_height, avctx->lowres));
866 override_dimensions = 0;
869 ret = ff_decode_frame_props(avctx, frame);
874 if (hwaccel->alloc_frame) {
875 ret = hwaccel->alloc_frame(avctx, frame);
879 avctx->sw_pix_fmt = avctx->pix_fmt;
881 ret = avctx->get_buffer2(avctx, frame, flags);
884 if (avctx->codec_type == AVMEDIA_TYPE_VIDEO && !override_dimensions) {
885 frame->width = avctx->width;
886 frame->height = avctx->height;
892 int ff_get_buffer(AVCodecContext *avctx, AVFrame *frame, int flags)
894 int ret = get_buffer_internal(avctx, frame, flags);
896 av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
897 frame->width = frame->height = 0;
902 static int reget_buffer_internal(AVCodecContext *avctx, AVFrame *frame)
907 av_assert0(avctx->codec_type == AVMEDIA_TYPE_VIDEO);
909 if (frame->data[0] && (frame->width != avctx->width || frame->height != avctx->height || frame->format != avctx->pix_fmt)) {
910 av_log(avctx, AV_LOG_WARNING, "Picture changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s in reget buffer()\n",
911 frame->width, frame->height, av_get_pix_fmt_name(frame->format), avctx->width, avctx->height, av_get_pix_fmt_name(avctx->pix_fmt));
912 av_frame_unref(frame);
915 ff_init_buffer_info(avctx, frame);
918 return ff_get_buffer(avctx, frame, AV_GET_BUFFER_FLAG_REF);
920 if (av_frame_is_writable(frame))
921 return ff_decode_frame_props(avctx, frame);
923 tmp = av_frame_alloc();
925 return AVERROR(ENOMEM);
927 av_frame_move_ref(tmp, frame);
929 ret = ff_get_buffer(avctx, frame, AV_GET_BUFFER_FLAG_REF);
935 av_frame_copy(frame, tmp);
941 int ff_reget_buffer(AVCodecContext *avctx, AVFrame *frame)
943 int ret = reget_buffer_internal(avctx, frame);
945 av_log(avctx, AV_LOG_ERROR, "reget_buffer() failed\n");
949 int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2), void *arg, int *ret, int count, int size)
953 for (i = 0; i < count; i++) {
954 int r = func(c, (char *)arg + i * size);
961 int avcodec_default_execute2(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2, int jobnr, int threadnr), void *arg, int *ret, int count)
965 for (i = 0; i < count; i++) {
966 int r = func(c, arg, i, 0);
973 enum AVPixelFormat avpriv_find_pix_fmt(const PixelFormatTag *tags,
976 while (tags->pix_fmt >= 0) {
977 if (tags->fourcc == fourcc)
978 return tags->pix_fmt;
981 return AV_PIX_FMT_NONE;
984 static int is_hwaccel_pix_fmt(enum AVPixelFormat pix_fmt)
986 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
987 return desc->flags & AV_PIX_FMT_FLAG_HWACCEL;
990 enum AVPixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum AVPixelFormat *fmt)
992 while (*fmt != AV_PIX_FMT_NONE && is_hwaccel_pix_fmt(*fmt))
997 static AVHWAccel *find_hwaccel(enum AVCodecID codec_id,
998 enum AVPixelFormat pix_fmt)
1000 AVHWAccel *hwaccel = NULL;
1002 while ((hwaccel = av_hwaccel_next(hwaccel)))
1003 if (hwaccel->id == codec_id
1004 && hwaccel->pix_fmt == pix_fmt)
1009 static int setup_hwaccel(AVCodecContext *avctx,
1010 const enum AVPixelFormat fmt,
1013 AVHWAccel *hwa = find_hwaccel(avctx->codec_id, fmt);
1016 if (avctx->active_thread_type & FF_THREAD_FRAME) {
1017 av_log(avctx, AV_LOG_ERROR,
1018 "Hardware accelerated decoding with frame threading is not supported.\n");
1019 return AVERROR(EINVAL);
1023 av_log(avctx, AV_LOG_ERROR,
1024 "Could not find an AVHWAccel for the pixel format: %s",
1026 return AVERROR(ENOENT);
1029 if (hwa->capabilities & HWACCEL_CODEC_CAP_EXPERIMENTAL &&
1030 avctx->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
1031 av_log(avctx, AV_LOG_WARNING, "Ignoring experimental hwaccel: %s\n",
1033 return AVERROR_PATCHWELCOME;
1036 if (hwa->priv_data_size) {
1037 avctx->internal->hwaccel_priv_data = av_mallocz(hwa->priv_data_size);
1038 if (!avctx->internal->hwaccel_priv_data)
1039 return AVERROR(ENOMEM);
1043 ret = hwa->init(avctx);
1045 av_freep(&avctx->internal->hwaccel_priv_data);
1050 avctx->hwaccel = hwa;
1055 int ff_get_format(AVCodecContext *avctx, const enum AVPixelFormat *fmt)
1057 const AVPixFmtDescriptor *desc;
1058 enum AVPixelFormat *choices;
1059 enum AVPixelFormat ret;
1062 while (fmt[n] != AV_PIX_FMT_NONE)
1066 avctx->sw_pix_fmt = fmt[n - 1];
1067 av_assert2(!is_hwaccel_pix_fmt(avctx->sw_pix_fmt));
1069 choices = av_malloc_array(n + 1, sizeof(*choices));
1071 return AV_PIX_FMT_NONE;
1073 memcpy(choices, fmt, (n + 1) * sizeof(*choices));
1076 if (avctx->hwaccel && avctx->hwaccel->uninit)
1077 avctx->hwaccel->uninit(avctx);
1078 av_freep(&avctx->internal->hwaccel_priv_data);
1079 avctx->hwaccel = NULL;
1081 ret = avctx->get_format(avctx, choices);
1083 desc = av_pix_fmt_desc_get(ret);
1085 ret = AV_PIX_FMT_NONE;
1089 if (!(desc->flags & AV_PIX_FMT_FLAG_HWACCEL))
1091 #if FF_API_CAP_VDPAU
1092 if (avctx->codec->capabilities&AV_CODEC_CAP_HWACCEL_VDPAU)
1096 if (!setup_hwaccel(avctx, ret, desc->name))
1099 /* Remove failed hwaccel from choices */
1100 for (n = 0; choices[n] != ret; n++)
1101 av_assert0(choices[n] != AV_PIX_FMT_NONE);
1104 choices[n] = choices[n + 1];
1105 while (choices[n++] != AV_PIX_FMT_NONE);
1112 MAKE_ACCESSORS(AVCodecContext, codec, AVRational, pkt_timebase)
1113 MAKE_ACCESSORS(AVCodecContext, codec, const AVCodecDescriptor *, codec_descriptor)
1114 MAKE_ACCESSORS(AVCodecContext, codec, int, lowres)
1115 MAKE_ACCESSORS(AVCodecContext, codec, int, seek_preroll)
1116 MAKE_ACCESSORS(AVCodecContext, codec, uint16_t*, chroma_intra_matrix)
1118 unsigned av_codec_get_codec_properties(const AVCodecContext *codec)
1120 return codec->properties;
1123 int av_codec_get_max_lowres(const AVCodec *codec)
1125 return codec->max_lowres;
1128 static void get_subtitle_defaults(AVSubtitle *sub)
1130 memset(sub, 0, sizeof(*sub));
1131 sub->pts = AV_NOPTS_VALUE;
1134 static int64_t get_bit_rate(AVCodecContext *ctx)
1137 int bits_per_sample;
1139 switch (ctx->codec_type) {
1140 case AVMEDIA_TYPE_VIDEO:
1141 case AVMEDIA_TYPE_DATA:
1142 case AVMEDIA_TYPE_SUBTITLE:
1143 case AVMEDIA_TYPE_ATTACHMENT:
1144 bit_rate = ctx->bit_rate;
1146 case AVMEDIA_TYPE_AUDIO:
1147 bits_per_sample = av_get_bits_per_sample(ctx->codec_id);
1148 bit_rate = bits_per_sample ? ctx->sample_rate * (int64_t)ctx->channels * bits_per_sample : ctx->bit_rate;
1157 int attribute_align_arg ff_codec_open2_recursive(AVCodecContext *avctx, const AVCodec *codec, AVDictionary **options)
1161 ff_unlock_avcodec(codec);
1163 ret = avcodec_open2(avctx, codec, options);
1165 ff_lock_avcodec(avctx, codec);
1169 int attribute_align_arg avcodec_open2(AVCodecContext *avctx, const AVCodec *codec, AVDictionary **options)
1172 AVDictionary *tmp = NULL;
1173 const AVPixFmtDescriptor *pixdesc;
1175 if (avcodec_is_open(avctx))
1178 if ((!codec && !avctx->codec)) {
1179 av_log(avctx, AV_LOG_ERROR, "No codec provided to avcodec_open2()\n");
1180 return AVERROR(EINVAL);
1182 if ((codec && avctx->codec && codec != avctx->codec)) {
1183 av_log(avctx, AV_LOG_ERROR, "This AVCodecContext was allocated for %s, "
1184 "but %s passed to avcodec_open2()\n", avctx->codec->name, codec->name);
1185 return AVERROR(EINVAL);
1188 codec = avctx->codec;
1190 if (avctx->extradata_size < 0 || avctx->extradata_size >= FF_MAX_EXTRADATA_SIZE)
1191 return AVERROR(EINVAL);
1194 av_dict_copy(&tmp, *options, 0);
1196 ret = ff_lock_avcodec(avctx, codec);
1200 avctx->internal = av_mallocz(sizeof(AVCodecInternal));
1201 if (!avctx->internal) {
1202 ret = AVERROR(ENOMEM);
1206 avctx->internal->pool = av_mallocz(sizeof(*avctx->internal->pool));
1207 if (!avctx->internal->pool) {
1208 ret = AVERROR(ENOMEM);
1212 avctx->internal->to_free = av_frame_alloc();
1213 if (!avctx->internal->to_free) {
1214 ret = AVERROR(ENOMEM);
1218 if (codec->priv_data_size > 0) {
1219 if (!avctx->priv_data) {
1220 avctx->priv_data = av_mallocz(codec->priv_data_size);
1221 if (!avctx->priv_data) {
1222 ret = AVERROR(ENOMEM);
1225 if (codec->priv_class) {
1226 *(const AVClass **)avctx->priv_data = codec->priv_class;
1227 av_opt_set_defaults(avctx->priv_data);
1230 if (codec->priv_class && (ret = av_opt_set_dict(avctx->priv_data, &tmp)) < 0)
1233 avctx->priv_data = NULL;
1235 if ((ret = av_opt_set_dict(avctx, &tmp)) < 0)
1238 if (avctx->codec_whitelist && av_match_list(codec->name, avctx->codec_whitelist, ',') <= 0) {
1239 av_log(avctx, AV_LOG_ERROR, "Codec (%s) not on whitelist \'%s\'\n", codec->name, avctx->codec_whitelist);
1240 ret = AVERROR(EINVAL);
1244 // only call ff_set_dimensions() for non H.264/VP6F/DXV codecs so as not to overwrite previously setup dimensions
1245 if (!(avctx->coded_width && avctx->coded_height && avctx->width && avctx->height &&
1246 (avctx->codec_id == AV_CODEC_ID_H264 || avctx->codec_id == AV_CODEC_ID_VP6F || avctx->codec_id == AV_CODEC_ID_DXV))) {
1247 if (avctx->coded_width && avctx->coded_height)
1248 ret = ff_set_dimensions(avctx, avctx->coded_width, avctx->coded_height);
1249 else if (avctx->width && avctx->height)
1250 ret = ff_set_dimensions(avctx, avctx->width, avctx->height);
1255 if ((avctx->coded_width || avctx->coded_height || avctx->width || avctx->height)
1256 && ( av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx) < 0
1257 || av_image_check_size(avctx->width, avctx->height, 0, avctx) < 0)) {
1258 av_log(avctx, AV_LOG_WARNING, "Ignoring invalid width/height values\n");
1259 ff_set_dimensions(avctx, 0, 0);
1262 if (avctx->width > 0 && avctx->height > 0) {
1263 if (av_image_check_sar(avctx->width, avctx->height,
1264 avctx->sample_aspect_ratio) < 0) {
1265 av_log(avctx, AV_LOG_WARNING, "ignoring invalid SAR: %u/%u\n",
1266 avctx->sample_aspect_ratio.num,
1267 avctx->sample_aspect_ratio.den);
1268 avctx->sample_aspect_ratio = (AVRational){ 0, 1 };
1272 /* if the decoder init function was already called previously,
1273 * free the already allocated subtitle_header before overwriting it */
1274 if (av_codec_is_decoder(codec))
1275 av_freep(&avctx->subtitle_header);
1277 if (avctx->channels > FF_SANE_NB_CHANNELS) {
1278 ret = AVERROR(EINVAL);
1282 avctx->codec = codec;
1283 if ((avctx->codec_type == AVMEDIA_TYPE_UNKNOWN || avctx->codec_type == codec->type) &&
1284 avctx->codec_id == AV_CODEC_ID_NONE) {
1285 avctx->codec_type = codec->type;
1286 avctx->codec_id = codec->id;
1288 if (avctx->codec_id != codec->id || (avctx->codec_type != codec->type
1289 && avctx->codec_type != AVMEDIA_TYPE_ATTACHMENT)) {
1290 av_log(avctx, AV_LOG_ERROR, "Codec type or id mismatches\n");
1291 ret = AVERROR(EINVAL);
1294 avctx->frame_number = 0;
1295 avctx->codec_descriptor = avcodec_descriptor_get(avctx->codec_id);
1297 if ((avctx->codec->capabilities & AV_CODEC_CAP_EXPERIMENTAL) &&
1298 avctx->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
1299 const char *codec_string = av_codec_is_encoder(codec) ? "encoder" : "decoder";
1301 av_log(avctx, AV_LOG_ERROR,
1302 "The %s '%s' is experimental but experimental codecs are not enabled, "
1303 "add '-strict %d' if you want to use it.\n",
1304 codec_string, codec->name, FF_COMPLIANCE_EXPERIMENTAL);
1305 codec2 = av_codec_is_encoder(codec) ? avcodec_find_encoder(codec->id) : avcodec_find_decoder(codec->id);
1306 if (!(codec2->capabilities & AV_CODEC_CAP_EXPERIMENTAL))
1307 av_log(avctx, AV_LOG_ERROR, "Alternatively use the non experimental %s '%s'.\n",
1308 codec_string, codec2->name);
1309 ret = AVERROR_EXPERIMENTAL;
1313 if (avctx->codec_type == AVMEDIA_TYPE_AUDIO &&
1314 (!avctx->time_base.num || !avctx->time_base.den)) {
1315 avctx->time_base.num = 1;
1316 avctx->time_base.den = avctx->sample_rate;
1320 av_log(avctx, AV_LOG_WARNING, "Warning: not compiled with thread support, using thread emulation\n");
1322 if (CONFIG_FRAME_THREAD_ENCODER && av_codec_is_encoder(avctx->codec)) {
1323 ff_unlock_avcodec(codec); //we will instantiate a few encoders thus kick the counter to prevent false detection of a problem
1324 ret = ff_frame_thread_encoder_init(avctx, options ? *options : NULL);
1325 ff_lock_avcodec(avctx, codec);
1331 && !(avctx->internal->frame_thread_encoder && (avctx->active_thread_type&FF_THREAD_FRAME))) {
1332 ret = ff_thread_init(avctx);
1337 if (!HAVE_THREADS && !(codec->capabilities & AV_CODEC_CAP_AUTO_THREADS))
1338 avctx->thread_count = 1;
1340 if (avctx->codec->max_lowres < avctx->lowres || avctx->lowres < 0) {
1341 av_log(avctx, AV_LOG_ERROR, "The maximum value for lowres supported by the decoder is %d\n",
1342 avctx->codec->max_lowres);
1343 ret = AVERROR(EINVAL);
1348 if (avctx->debug_mv)
1349 av_log(avctx, AV_LOG_WARNING, "The 'vismv' option is deprecated, "
1350 "see the codecview filter instead.\n");
1353 if (av_codec_is_encoder(avctx->codec)) {
1355 #if FF_API_CODED_FRAME
1356 FF_DISABLE_DEPRECATION_WARNINGS
1357 avctx->coded_frame = av_frame_alloc();
1358 if (!avctx->coded_frame) {
1359 ret = AVERROR(ENOMEM);
1362 FF_ENABLE_DEPRECATION_WARNINGS
1364 if (avctx->codec->sample_fmts) {
1365 for (i = 0; avctx->codec->sample_fmts[i] != AV_SAMPLE_FMT_NONE; i++) {
1366 if (avctx->sample_fmt == avctx->codec->sample_fmts[i])
1368 if (avctx->channels == 1 &&
1369 av_get_planar_sample_fmt(avctx->sample_fmt) ==
1370 av_get_planar_sample_fmt(avctx->codec->sample_fmts[i])) {
1371 avctx->sample_fmt = avctx->codec->sample_fmts[i];
1375 if (avctx->codec->sample_fmts[i] == AV_SAMPLE_FMT_NONE) {
1377 snprintf(buf, sizeof(buf), "%d", avctx->sample_fmt);
1378 av_log(avctx, AV_LOG_ERROR, "Specified sample format %s is invalid or not supported\n",
1379 (char *)av_x_if_null(av_get_sample_fmt_name(avctx->sample_fmt), buf));
1380 ret = AVERROR(EINVAL);
1384 if (avctx->codec->pix_fmts) {
1385 for (i = 0; avctx->codec->pix_fmts[i] != AV_PIX_FMT_NONE; i++)
1386 if (avctx->pix_fmt == avctx->codec->pix_fmts[i])
1388 if (avctx->codec->pix_fmts[i] == AV_PIX_FMT_NONE
1389 && !((avctx->codec_id == AV_CODEC_ID_MJPEG || avctx->codec_id == AV_CODEC_ID_LJPEG)
1390 && avctx->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL)) {
1392 snprintf(buf, sizeof(buf), "%d", avctx->pix_fmt);
1393 av_log(avctx, AV_LOG_ERROR, "Specified pixel format %s is invalid or not supported\n",
1394 (char *)av_x_if_null(av_get_pix_fmt_name(avctx->pix_fmt), buf));
1395 ret = AVERROR(EINVAL);
1398 if (avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ420P ||
1399 avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ411P ||
1400 avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ422P ||
1401 avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ440P ||
1402 avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ444P)
1403 avctx->color_range = AVCOL_RANGE_JPEG;
1405 if (avctx->codec->supported_samplerates) {
1406 for (i = 0; avctx->codec->supported_samplerates[i] != 0; i++)
1407 if (avctx->sample_rate == avctx->codec->supported_samplerates[i])
1409 if (avctx->codec->supported_samplerates[i] == 0) {
1410 av_log(avctx, AV_LOG_ERROR, "Specified sample rate %d is not supported\n",
1411 avctx->sample_rate);
1412 ret = AVERROR(EINVAL);
1416 if (avctx->sample_rate < 0) {
1417 av_log(avctx, AV_LOG_ERROR, "Specified sample rate %d is not supported\n",
1418 avctx->sample_rate);
1419 ret = AVERROR(EINVAL);
1422 if (avctx->codec->channel_layouts) {
1423 if (!avctx->channel_layout) {
1424 av_log(avctx, AV_LOG_WARNING, "Channel layout not specified\n");
1426 for (i = 0; avctx->codec->channel_layouts[i] != 0; i++)
1427 if (avctx->channel_layout == avctx->codec->channel_layouts[i])
1429 if (avctx->codec->channel_layouts[i] == 0) {
1431 av_get_channel_layout_string(buf, sizeof(buf), -1, avctx->channel_layout);
1432 av_log(avctx, AV_LOG_ERROR, "Specified channel layout '%s' is not supported\n", buf);
1433 ret = AVERROR(EINVAL);
1438 if (avctx->channel_layout && avctx->channels) {
1439 int channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
1440 if (channels != avctx->channels) {
1442 av_get_channel_layout_string(buf, sizeof(buf), -1, avctx->channel_layout);
1443 av_log(avctx, AV_LOG_ERROR,
1444 "Channel layout '%s' with %d channels does not match number of specified channels %d\n",
1445 buf, channels, avctx->channels);
1446 ret = AVERROR(EINVAL);
1449 } else if (avctx->channel_layout) {
1450 avctx->channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
1452 if (avctx->channels < 0) {
1453 av_log(avctx, AV_LOG_ERROR, "Specified number of channels %d is not supported\n",
1455 ret = AVERROR(EINVAL);
1458 if(avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
1459 pixdesc = av_pix_fmt_desc_get(avctx->pix_fmt);
1460 if ( avctx->bits_per_raw_sample < 0
1461 || (avctx->bits_per_raw_sample > 8 && pixdesc->comp[0].depth <= 8)) {
1462 av_log(avctx, AV_LOG_WARNING, "Specified bit depth %d not possible with the specified pixel formats depth %d\n",
1463 avctx->bits_per_raw_sample, pixdesc->comp[0].depth);
1464 avctx->bits_per_raw_sample = pixdesc->comp[0].depth;
1466 if (avctx->width <= 0 || avctx->height <= 0) {
1467 av_log(avctx, AV_LOG_ERROR, "dimensions not set\n");
1468 ret = AVERROR(EINVAL);
1472 if ( (avctx->codec_type == AVMEDIA_TYPE_VIDEO || avctx->codec_type == AVMEDIA_TYPE_AUDIO)
1473 && avctx->bit_rate>0 && avctx->bit_rate<1000) {
1474 av_log(avctx, AV_LOG_WARNING, "Bitrate %"PRId64" is extremely low, maybe you mean %"PRId64"k\n", (int64_t)avctx->bit_rate, (int64_t)avctx->bit_rate);
1477 if (!avctx->rc_initial_buffer_occupancy)
1478 avctx->rc_initial_buffer_occupancy = avctx->rc_buffer_size * 3 / 4;
1480 if (avctx->ticks_per_frame && avctx->time_base.num &&
1481 avctx->ticks_per_frame > INT_MAX / avctx->time_base.num) {
1482 av_log(avctx, AV_LOG_ERROR,
1483 "ticks_per_frame %d too large for the timebase %d/%d.",
1484 avctx->ticks_per_frame,
1485 avctx->time_base.num,
1486 avctx->time_base.den);
1491 avctx->pts_correction_num_faulty_pts =
1492 avctx->pts_correction_num_faulty_dts = 0;
1493 avctx->pts_correction_last_pts =
1494 avctx->pts_correction_last_dts = INT64_MIN;
1496 if ( !CONFIG_GRAY && avctx->flags & AV_CODEC_FLAG_GRAY
1497 && avctx->codec_descriptor->type == AVMEDIA_TYPE_VIDEO)
1498 av_log(avctx, AV_LOG_WARNING,
1499 "gray decoding requested but not enabled at configuration time\n");
1501 if ( avctx->codec->init && (!(avctx->active_thread_type&FF_THREAD_FRAME)
1502 || avctx->internal->frame_thread_encoder)) {
1503 ret = avctx->codec->init(avctx);
1511 #if FF_API_AUDIOENC_DELAY
1512 if (av_codec_is_encoder(avctx->codec))
1513 avctx->delay = avctx->initial_padding;
1516 if (av_codec_is_decoder(avctx->codec)) {
1517 if (!avctx->bit_rate)
1518 avctx->bit_rate = get_bit_rate(avctx);
1519 /* validate channel layout from the decoder */
1520 if (avctx->channel_layout) {
1521 int channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
1522 if (!avctx->channels)
1523 avctx->channels = channels;
1524 else if (channels != avctx->channels) {
1526 av_get_channel_layout_string(buf, sizeof(buf), -1, avctx->channel_layout);
1527 av_log(avctx, AV_LOG_WARNING,
1528 "Channel layout '%s' with %d channels does not match specified number of channels %d: "
1529 "ignoring specified channel layout\n",
1530 buf, channels, avctx->channels);
1531 avctx->channel_layout = 0;
1534 if (avctx->channels && avctx->channels < 0 ||
1535 avctx->channels > FF_SANE_NB_CHANNELS) {
1536 ret = AVERROR(EINVAL);
1539 if (avctx->sub_charenc) {
1540 if (avctx->codec_type != AVMEDIA_TYPE_SUBTITLE) {
1541 av_log(avctx, AV_LOG_ERROR, "Character encoding is only "
1542 "supported with subtitles codecs\n");
1543 ret = AVERROR(EINVAL);
1545 } else if (avctx->codec_descriptor->props & AV_CODEC_PROP_BITMAP_SUB) {
1546 av_log(avctx, AV_LOG_WARNING, "Codec '%s' is bitmap-based, "
1547 "subtitles character encoding will be ignored\n",
1548 avctx->codec_descriptor->name);
1549 avctx->sub_charenc_mode = FF_SUB_CHARENC_MODE_DO_NOTHING;
1551 /* input character encoding is set for a text based subtitle
1552 * codec at this point */
1553 if (avctx->sub_charenc_mode == FF_SUB_CHARENC_MODE_AUTOMATIC)
1554 avctx->sub_charenc_mode = FF_SUB_CHARENC_MODE_PRE_DECODER;
1556 if (avctx->sub_charenc_mode == FF_SUB_CHARENC_MODE_PRE_DECODER) {
1558 iconv_t cd = iconv_open("UTF-8", avctx->sub_charenc);
1559 if (cd == (iconv_t)-1) {
1560 ret = AVERROR(errno);
1561 av_log(avctx, AV_LOG_ERROR, "Unable to open iconv context "
1562 "with input character encoding \"%s\"\n", avctx->sub_charenc);
1567 av_log(avctx, AV_LOG_ERROR, "Character encoding subtitles "
1568 "conversion needs a libavcodec built with iconv support "
1569 "for this codec\n");
1570 ret = AVERROR(ENOSYS);
1577 #if FF_API_AVCTX_TIMEBASE
1578 if (avctx->framerate.num > 0 && avctx->framerate.den > 0)
1579 avctx->time_base = av_inv_q(av_mul_q(avctx->framerate, (AVRational){avctx->ticks_per_frame, 1}));
1582 if (codec->priv_data_size > 0 && avctx->priv_data && codec->priv_class) {
1583 av_assert0(*(const AVClass **)avctx->priv_data == codec->priv_class);
1587 ff_unlock_avcodec(codec);
1589 av_dict_free(options);
1596 (avctx->codec->caps_internal & FF_CODEC_CAP_INIT_CLEANUP))
1597 avctx->codec->close(avctx);
1599 if (codec->priv_class && codec->priv_data_size)
1600 av_opt_free(avctx->priv_data);
1603 #if FF_API_CODED_FRAME
1604 FF_DISABLE_DEPRECATION_WARNINGS
1605 av_frame_free(&avctx->coded_frame);
1606 FF_ENABLE_DEPRECATION_WARNINGS
1610 av_freep(&avctx->priv_data);
1611 if (avctx->internal) {
1612 av_frame_free(&avctx->internal->to_free);
1613 av_freep(&avctx->internal->pool);
1615 av_freep(&avctx->internal);
1616 avctx->codec = NULL;
1620 int ff_alloc_packet2(AVCodecContext *avctx, AVPacket *avpkt, int64_t size, int64_t min_size)
1622 if (avpkt->size < 0) {
1623 av_log(avctx, AV_LOG_ERROR, "Invalid negative user packet size %d\n", avpkt->size);
1624 return AVERROR(EINVAL);
1626 if (size < 0 || size > INT_MAX - AV_INPUT_BUFFER_PADDING_SIZE) {
1627 av_log(avctx, AV_LOG_ERROR, "Invalid minimum required packet size %"PRId64" (max allowed is %d)\n",
1628 size, INT_MAX - AV_INPUT_BUFFER_PADDING_SIZE);
1629 return AVERROR(EINVAL);
1632 if (avctx && 2*min_size < size) { // FIXME The factor needs to be finetuned
1633 av_assert0(!avpkt->data || avpkt->data != avctx->internal->byte_buffer);
1634 if (!avpkt->data || avpkt->size < size) {
1635 av_fast_padded_malloc(&avctx->internal->byte_buffer, &avctx->internal->byte_buffer_size, size);
1636 avpkt->data = avctx->internal->byte_buffer;
1637 avpkt->size = avctx->internal->byte_buffer_size;
1642 AVBufferRef *buf = avpkt->buf;
1644 if (avpkt->size < size) {
1645 av_log(avctx, AV_LOG_ERROR, "User packet is too small (%d < %"PRId64")\n", avpkt->size, size);
1646 return AVERROR(EINVAL);
1649 av_init_packet(avpkt);
1654 int ret = av_new_packet(avpkt, size);
1656 av_log(avctx, AV_LOG_ERROR, "Failed to allocate packet of size %"PRId64"\n", size);
1661 int ff_alloc_packet(AVPacket *avpkt, int size)
1663 return ff_alloc_packet2(NULL, avpkt, size, 0);
1667 * Pad last frame with silence.
1669 static int pad_last_frame(AVCodecContext *s, AVFrame **dst, const AVFrame *src)
1671 AVFrame *frame = NULL;
1674 if (!(frame = av_frame_alloc()))
1675 return AVERROR(ENOMEM);
1677 frame->format = src->format;
1678 frame->channel_layout = src->channel_layout;
1679 av_frame_set_channels(frame, av_frame_get_channels(src));
1680 frame->nb_samples = s->frame_size;
1681 ret = av_frame_get_buffer(frame, 32);
1685 ret = av_frame_copy_props(frame, src);
1689 if ((ret = av_samples_copy(frame->extended_data, src->extended_data, 0, 0,
1690 src->nb_samples, s->channels, s->sample_fmt)) < 0)
1692 if ((ret = av_samples_set_silence(frame->extended_data, src->nb_samples,
1693 frame->nb_samples - src->nb_samples,
1694 s->channels, s->sample_fmt)) < 0)
1702 av_frame_free(&frame);
1706 int attribute_align_arg avcodec_encode_audio2(AVCodecContext *avctx,
1708 const AVFrame *frame,
1709 int *got_packet_ptr)
1711 AVFrame *extended_frame = NULL;
1712 AVFrame *padded_frame = NULL;
1714 AVPacket user_pkt = *avpkt;
1715 int needs_realloc = !user_pkt.data;
1717 *got_packet_ptr = 0;
1719 if (!(avctx->codec->capabilities & AV_CODEC_CAP_DELAY) && !frame) {
1720 av_packet_unref(avpkt);
1721 av_init_packet(avpkt);
1725 /* ensure that extended_data is properly set */
1726 if (frame && !frame->extended_data) {
1727 if (av_sample_fmt_is_planar(avctx->sample_fmt) &&
1728 avctx->channels > AV_NUM_DATA_POINTERS) {
1729 av_log(avctx, AV_LOG_ERROR, "Encoding to a planar sample format, "
1730 "with more than %d channels, but extended_data is not set.\n",
1731 AV_NUM_DATA_POINTERS);
1732 return AVERROR(EINVAL);
1734 av_log(avctx, AV_LOG_WARNING, "extended_data is not set.\n");
1736 extended_frame = av_frame_alloc();
1737 if (!extended_frame)
1738 return AVERROR(ENOMEM);
1740 memcpy(extended_frame, frame, sizeof(AVFrame));
1741 extended_frame->extended_data = extended_frame->data;
1742 frame = extended_frame;
1745 /* extract audio service type metadata */
1747 AVFrameSideData *sd = av_frame_get_side_data(frame, AV_FRAME_DATA_AUDIO_SERVICE_TYPE);
1748 if (sd && sd->size >= sizeof(enum AVAudioServiceType))
1749 avctx->audio_service_type = *(enum AVAudioServiceType*)sd->data;
1752 /* check for valid frame size */
1754 if (avctx->codec->capabilities & AV_CODEC_CAP_SMALL_LAST_FRAME) {
1755 if (frame->nb_samples > avctx->frame_size) {
1756 av_log(avctx, AV_LOG_ERROR, "more samples than frame size (avcodec_encode_audio2)\n");
1757 ret = AVERROR(EINVAL);
1760 } else if (!(avctx->codec->capabilities & AV_CODEC_CAP_VARIABLE_FRAME_SIZE)) {
1761 if (frame->nb_samples < avctx->frame_size &&
1762 !avctx->internal->last_audio_frame) {
1763 ret = pad_last_frame(avctx, &padded_frame, frame);
1767 frame = padded_frame;
1768 avctx->internal->last_audio_frame = 1;
1771 if (frame->nb_samples != avctx->frame_size) {
1772 av_log(avctx, AV_LOG_ERROR, "nb_samples (%d) != frame_size (%d) (avcodec_encode_audio2)\n", frame->nb_samples, avctx->frame_size);
1773 ret = AVERROR(EINVAL);
1779 av_assert0(avctx->codec->encode2);
1781 ret = avctx->codec->encode2(avctx, avpkt, frame, got_packet_ptr);
1783 if (*got_packet_ptr) {
1784 if (!(avctx->codec->capabilities & AV_CODEC_CAP_DELAY)) {
1785 if (avpkt->pts == AV_NOPTS_VALUE)
1786 avpkt->pts = frame->pts;
1787 if (!avpkt->duration)
1788 avpkt->duration = ff_samples_to_time_base(avctx,
1791 avpkt->dts = avpkt->pts;
1796 if (avpkt->data && avpkt->data == avctx->internal->byte_buffer) {
1798 if (user_pkt.data) {
1799 if (user_pkt.size >= avpkt->size) {
1800 memcpy(user_pkt.data, avpkt->data, avpkt->size);
1802 av_log(avctx, AV_LOG_ERROR, "Provided packet is too small, needs to be %d\n", avpkt->size);
1803 avpkt->size = user_pkt.size;
1806 avpkt->buf = user_pkt.buf;
1807 avpkt->data = user_pkt.data;
1809 if (av_dup_packet(avpkt) < 0) {
1810 ret = AVERROR(ENOMEM);
1816 if (needs_realloc && avpkt->data) {
1817 ret = av_buffer_realloc(&avpkt->buf, avpkt->size + AV_INPUT_BUFFER_PADDING_SIZE);
1819 avpkt->data = avpkt->buf->data;
1822 avctx->frame_number++;
1825 if (ret < 0 || !*got_packet_ptr) {
1826 av_packet_unref(avpkt);
1827 av_init_packet(avpkt);
1831 /* NOTE: if we add any audio encoders which output non-keyframe packets,
1832 * this needs to be moved to the encoders, but for now we can do it
1833 * here to simplify things */
1834 avpkt->flags |= AV_PKT_FLAG_KEY;
1837 av_frame_free(&padded_frame);
1838 av_free(extended_frame);
1840 #if FF_API_AUDIOENC_DELAY
1841 avctx->delay = avctx->initial_padding;
1847 int attribute_align_arg avcodec_encode_video2(AVCodecContext *avctx,
1849 const AVFrame *frame,
1850 int *got_packet_ptr)
1853 AVPacket user_pkt = *avpkt;
1854 int needs_realloc = !user_pkt.data;
1856 *got_packet_ptr = 0;
1858 if(CONFIG_FRAME_THREAD_ENCODER &&
1859 avctx->internal->frame_thread_encoder && (avctx->active_thread_type&FF_THREAD_FRAME))
1860 return ff_thread_video_encode_frame(avctx, avpkt, frame, got_packet_ptr);
1862 if ((avctx->flags&AV_CODEC_FLAG_PASS1) && avctx->stats_out)
1863 avctx->stats_out[0] = '\0';
1865 if (!(avctx->codec->capabilities & AV_CODEC_CAP_DELAY) && !frame) {
1866 av_packet_unref(avpkt);
1867 av_init_packet(avpkt);
1872 if (av_image_check_size(avctx->width, avctx->height, 0, avctx))
1873 return AVERROR(EINVAL);
1875 if (frame && frame->format == AV_PIX_FMT_NONE)
1876 av_log(avctx, AV_LOG_WARNING, "AVFrame.format is not set\n");
1877 if (frame && (frame->width == 0 || frame->height == 0))
1878 av_log(avctx, AV_LOG_WARNING, "AVFrame.width or height is not set\n");
1880 av_assert0(avctx->codec->encode2);
1882 ret = avctx->codec->encode2(avctx, avpkt, frame, got_packet_ptr);
1883 av_assert0(ret <= 0);
1885 if (avpkt->data && avpkt->data == avctx->internal->byte_buffer) {
1887 if (user_pkt.data) {
1888 if (user_pkt.size >= avpkt->size) {
1889 memcpy(user_pkt.data, avpkt->data, avpkt->size);
1891 av_log(avctx, AV_LOG_ERROR, "Provided packet is too small, needs to be %d\n", avpkt->size);
1892 avpkt->size = user_pkt.size;
1895 avpkt->buf = user_pkt.buf;
1896 avpkt->data = user_pkt.data;
1898 if (av_dup_packet(avpkt) < 0) {
1899 ret = AVERROR(ENOMEM);
1905 if (!*got_packet_ptr)
1907 else if (!(avctx->codec->capabilities & AV_CODEC_CAP_DELAY))
1908 avpkt->pts = avpkt->dts = frame->pts;
1910 if (needs_realloc && avpkt->data) {
1911 ret = av_buffer_realloc(&avpkt->buf, avpkt->size + AV_INPUT_BUFFER_PADDING_SIZE);
1913 avpkt->data = avpkt->buf->data;
1916 avctx->frame_number++;
1919 if (ret < 0 || !*got_packet_ptr)
1920 av_packet_unref(avpkt);
1926 int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size,
1927 const AVSubtitle *sub)
1930 if (sub->start_display_time) {
1931 av_log(avctx, AV_LOG_ERROR, "start_display_time must be 0.\n");
1935 ret = avctx->codec->encode_sub(avctx, buf, buf_size, sub);
1936 avctx->frame_number++;
1941 * Attempt to guess proper monotonic timestamps for decoded video frames
1942 * which might have incorrect times. Input timestamps may wrap around, in
1943 * which case the output will as well.
1945 * @param pts the pts field of the decoded AVPacket, as passed through
1947 * @param dts the dts field of the decoded AVPacket
1948 * @return one of the input values, may be AV_NOPTS_VALUE
1950 static int64_t guess_correct_pts(AVCodecContext *ctx,
1951 int64_t reordered_pts, int64_t dts)
1953 int64_t pts = AV_NOPTS_VALUE;
1955 if (dts != AV_NOPTS_VALUE) {
1956 ctx->pts_correction_num_faulty_dts += dts <= ctx->pts_correction_last_dts;
1957 ctx->pts_correction_last_dts = dts;
1958 } else if (reordered_pts != AV_NOPTS_VALUE)
1959 ctx->pts_correction_last_dts = reordered_pts;
1961 if (reordered_pts != AV_NOPTS_VALUE) {
1962 ctx->pts_correction_num_faulty_pts += reordered_pts <= ctx->pts_correction_last_pts;
1963 ctx->pts_correction_last_pts = reordered_pts;
1964 } else if(dts != AV_NOPTS_VALUE)
1965 ctx->pts_correction_last_pts = dts;
1967 if ((ctx->pts_correction_num_faulty_pts<=ctx->pts_correction_num_faulty_dts || dts == AV_NOPTS_VALUE)
1968 && reordered_pts != AV_NOPTS_VALUE)
1969 pts = reordered_pts;
1976 static int apply_param_change(AVCodecContext *avctx, AVPacket *avpkt)
1979 const uint8_t *data;
1983 data = av_packet_get_side_data(avpkt, AV_PKT_DATA_PARAM_CHANGE, &size);
1987 if (!(avctx->codec->capabilities & AV_CODEC_CAP_PARAM_CHANGE)) {
1988 av_log(avctx, AV_LOG_ERROR, "This decoder does not support parameter "
1989 "changes, but PARAM_CHANGE side data was sent to it.\n");
1990 return AVERROR(EINVAL);
1996 flags = bytestream_get_le32(&data);
1999 if (flags & AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_COUNT) {
2002 val = bytestream_get_le32(&data);
2003 if (val <= 0 || val > INT_MAX) {
2004 av_log(avctx, AV_LOG_ERROR, "Invalid channel count");
2005 return AVERROR_INVALIDDATA;
2007 avctx->channels = val;
2010 if (flags & AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_LAYOUT) {
2013 avctx->channel_layout = bytestream_get_le64(&data);
2016 if (flags & AV_SIDE_DATA_PARAM_CHANGE_SAMPLE_RATE) {
2019 val = bytestream_get_le32(&data);
2020 if (val <= 0 || val > INT_MAX) {
2021 av_log(avctx, AV_LOG_ERROR, "Invalid sample rate");
2022 return AVERROR_INVALIDDATA;
2024 avctx->sample_rate = val;
2027 if (flags & AV_SIDE_DATA_PARAM_CHANGE_DIMENSIONS) {
2030 avctx->width = bytestream_get_le32(&data);
2031 avctx->height = bytestream_get_le32(&data);
2033 ret = ff_set_dimensions(avctx, avctx->width, avctx->height);
2040 av_log(avctx, AV_LOG_ERROR, "PARAM_CHANGE side data too small.\n");
2041 return AVERROR_INVALIDDATA;
2044 static int unrefcount_frame(AVCodecInternal *avci, AVFrame *frame)
2048 /* move the original frame to our backup */
2049 av_frame_unref(avci->to_free);
2050 av_frame_move_ref(avci->to_free, frame);
2052 /* now copy everything except the AVBufferRefs back
2053 * note that we make a COPY of the side data, so calling av_frame_free() on
2054 * the caller's frame will work properly */
2055 ret = av_frame_copy_props(frame, avci->to_free);
2059 memcpy(frame->data, avci->to_free->data, sizeof(frame->data));
2060 memcpy(frame->linesize, avci->to_free->linesize, sizeof(frame->linesize));
2061 if (avci->to_free->extended_data != avci->to_free->data) {
2062 int planes = av_frame_get_channels(avci->to_free);
2063 int size = planes * sizeof(*frame->extended_data);
2066 av_frame_unref(frame);
2070 frame->extended_data = av_malloc(size);
2071 if (!frame->extended_data) {
2072 av_frame_unref(frame);
2073 return AVERROR(ENOMEM);
2075 memcpy(frame->extended_data, avci->to_free->extended_data,
2078 frame->extended_data = frame->data;
2080 frame->format = avci->to_free->format;
2081 frame->width = avci->to_free->width;
2082 frame->height = avci->to_free->height;
2083 frame->channel_layout = avci->to_free->channel_layout;
2084 frame->nb_samples = avci->to_free->nb_samples;
2085 av_frame_set_channels(frame, av_frame_get_channels(avci->to_free));
2090 int attribute_align_arg avcodec_decode_video2(AVCodecContext *avctx, AVFrame *picture,
2091 int *got_picture_ptr,
2092 const AVPacket *avpkt)
2094 AVCodecInternal *avci = avctx->internal;
2096 // copy to ensure we do not change avpkt
2097 AVPacket tmp = *avpkt;
2100 return AVERROR(EINVAL);
2101 if (avctx->codec->type != AVMEDIA_TYPE_VIDEO) {
2102 av_log(avctx, AV_LOG_ERROR, "Invalid media type for video\n");
2103 return AVERROR(EINVAL);
2106 *got_picture_ptr = 0;
2107 if ((avctx->coded_width || avctx->coded_height) && av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx))
2108 return AVERROR(EINVAL);
2110 av_frame_unref(picture);
2112 if ((avctx->codec->capabilities & AV_CODEC_CAP_DELAY) || avpkt->size ||
2113 (avctx->active_thread_type & FF_THREAD_FRAME)) {
2114 int did_split = av_packet_split_side_data(&tmp);
2115 ret = apply_param_change(avctx, &tmp);
2117 av_log(avctx, AV_LOG_ERROR, "Error applying parameter changes.\n");
2118 if (avctx->err_recognition & AV_EF_EXPLODE)
2122 avctx->internal->pkt = &tmp;
2123 if (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME)
2124 ret = ff_thread_decode_frame(avctx, picture, got_picture_ptr,
2127 ret = avctx->codec->decode(avctx, picture, got_picture_ptr,
2129 if (!(avctx->codec->caps_internal & FF_CODEC_CAP_SETS_PKT_DTS))
2130 picture->pkt_dts = avpkt->dts;
2132 if(!avctx->has_b_frames){
2133 av_frame_set_pkt_pos(picture, avpkt->pos);
2135 //FIXME these should be under if(!avctx->has_b_frames)
2136 /* get_buffer is supposed to set frame parameters */
2137 if (!(avctx->codec->capabilities & AV_CODEC_CAP_DR1)) {
2138 if (!picture->sample_aspect_ratio.num) picture->sample_aspect_ratio = avctx->sample_aspect_ratio;
2139 if (!picture->width) picture->width = avctx->width;
2140 if (!picture->height) picture->height = avctx->height;
2141 if (picture->format == AV_PIX_FMT_NONE) picture->format = avctx->pix_fmt;
2146 emms_c(); //needed to avoid an emms_c() call before every return;
2148 avctx->internal->pkt = NULL;
2150 av_packet_free_side_data(&tmp);
2155 if (*got_picture_ptr) {
2156 if (!avctx->refcounted_frames) {
2157 int err = unrefcount_frame(avci, picture);
2162 avctx->frame_number++;
2163 av_frame_set_best_effort_timestamp(picture,
2164 guess_correct_pts(avctx,
2168 av_frame_unref(picture);
2172 /* many decoders assign whole AVFrames, thus overwriting extended_data;
2173 * make sure it's set correctly */
2174 av_assert0(!picture->extended_data || picture->extended_data == picture->data);
2176 #if FF_API_AVCTX_TIMEBASE
2177 if (avctx->framerate.num > 0 && avctx->framerate.den > 0)
2178 avctx->time_base = av_inv_q(av_mul_q(avctx->framerate, (AVRational){avctx->ticks_per_frame, 1}));
2184 int attribute_align_arg avcodec_decode_audio4(AVCodecContext *avctx,
2187 const AVPacket *avpkt)
2189 AVCodecInternal *avci = avctx->internal;
2194 if (!avpkt->data && avpkt->size) {
2195 av_log(avctx, AV_LOG_ERROR, "invalid packet: NULL data, size != 0\n");
2196 return AVERROR(EINVAL);
2199 return AVERROR(EINVAL);
2200 if (avctx->codec->type != AVMEDIA_TYPE_AUDIO) {
2201 av_log(avctx, AV_LOG_ERROR, "Invalid media type for audio\n");
2202 return AVERROR(EINVAL);
2205 av_frame_unref(frame);
2207 if ((avctx->codec->capabilities & AV_CODEC_CAP_DELAY) || avpkt->size || (avctx->active_thread_type & FF_THREAD_FRAME)) {
2210 uint32_t discard_padding = 0;
2211 uint8_t skip_reason = 0;
2212 uint8_t discard_reason = 0;
2213 // copy to ensure we do not change avpkt
2214 AVPacket tmp = *avpkt;
2215 int did_split = av_packet_split_side_data(&tmp);
2216 ret = apply_param_change(avctx, &tmp);
2218 av_log(avctx, AV_LOG_ERROR, "Error applying parameter changes.\n");
2219 if (avctx->err_recognition & AV_EF_EXPLODE)
2223 avctx->internal->pkt = &tmp;
2224 if (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME)
2225 ret = ff_thread_decode_frame(avctx, frame, got_frame_ptr, &tmp);
2227 ret = avctx->codec->decode(avctx, frame, got_frame_ptr, &tmp);
2228 av_assert0(ret <= tmp.size);
2229 frame->pkt_dts = avpkt->dts;
2231 if (ret >= 0 && *got_frame_ptr) {
2232 avctx->frame_number++;
2233 av_frame_set_best_effort_timestamp(frame,
2234 guess_correct_pts(avctx,
2237 if (frame->format == AV_SAMPLE_FMT_NONE)
2238 frame->format = avctx->sample_fmt;
2239 if (!frame->channel_layout)
2240 frame->channel_layout = avctx->channel_layout;
2241 if (!av_frame_get_channels(frame))
2242 av_frame_set_channels(frame, avctx->channels);
2243 if (!frame->sample_rate)
2244 frame->sample_rate = avctx->sample_rate;
2247 side= av_packet_get_side_data(avctx->internal->pkt, AV_PKT_DATA_SKIP_SAMPLES, &side_size);
2248 if(side && side_size>=10) {
2249 avctx->internal->skip_samples = AV_RL32(side);
2250 discard_padding = AV_RL32(side + 4);
2251 av_log(avctx, AV_LOG_DEBUG, "skip %d / discard %d samples due to side data\n",
2252 avctx->internal->skip_samples, (int)discard_padding);
2253 skip_reason = AV_RL8(side + 8);
2254 discard_reason = AV_RL8(side + 9);
2256 if (avctx->internal->skip_samples && *got_frame_ptr &&
2257 !(avctx->flags2 & AV_CODEC_FLAG2_SKIP_MANUAL)) {
2258 if(frame->nb_samples <= avctx->internal->skip_samples){
2260 avctx->internal->skip_samples -= frame->nb_samples;
2261 av_log(avctx, AV_LOG_DEBUG, "skip whole frame, skip left: %d\n",
2262 avctx->internal->skip_samples);
2264 av_samples_copy(frame->extended_data, frame->extended_data, 0, avctx->internal->skip_samples,
2265 frame->nb_samples - avctx->internal->skip_samples, avctx->channels, frame->format);
2266 if(avctx->pkt_timebase.num && avctx->sample_rate) {
2267 int64_t diff_ts = av_rescale_q(avctx->internal->skip_samples,
2268 (AVRational){1, avctx->sample_rate},
2269 avctx->pkt_timebase);
2270 if(frame->pkt_pts!=AV_NOPTS_VALUE)
2271 frame->pkt_pts += diff_ts;
2272 if(frame->pkt_dts!=AV_NOPTS_VALUE)
2273 frame->pkt_dts += diff_ts;
2274 if (av_frame_get_pkt_duration(frame) >= diff_ts)
2275 av_frame_set_pkt_duration(frame, av_frame_get_pkt_duration(frame) - diff_ts);
2277 av_log(avctx, AV_LOG_WARNING, "Could not update timestamps for skipped samples.\n");
2279 av_log(avctx, AV_LOG_DEBUG, "skip %d/%d samples\n",
2280 avctx->internal->skip_samples, frame->nb_samples);
2281 frame->nb_samples -= avctx->internal->skip_samples;
2282 avctx->internal->skip_samples = 0;
2286 if (discard_padding > 0 && discard_padding <= frame->nb_samples && *got_frame_ptr &&
2287 !(avctx->flags2 & AV_CODEC_FLAG2_SKIP_MANUAL)) {
2288 if (discard_padding == frame->nb_samples) {
2291 if(avctx->pkt_timebase.num && avctx->sample_rate) {
2292 int64_t diff_ts = av_rescale_q(frame->nb_samples - discard_padding,
2293 (AVRational){1, avctx->sample_rate},
2294 avctx->pkt_timebase);
2295 if (av_frame_get_pkt_duration(frame) >= diff_ts)
2296 av_frame_set_pkt_duration(frame, av_frame_get_pkt_duration(frame) - diff_ts);
2298 av_log(avctx, AV_LOG_WARNING, "Could not update timestamps for discarded samples.\n");
2300 av_log(avctx, AV_LOG_DEBUG, "discard %d/%d samples\n",
2301 (int)discard_padding, frame->nb_samples);
2302 frame->nb_samples -= discard_padding;
2306 if ((avctx->flags2 & AV_CODEC_FLAG2_SKIP_MANUAL) && *got_frame_ptr) {
2307 AVFrameSideData *fside = av_frame_new_side_data(frame, AV_FRAME_DATA_SKIP_SAMPLES, 10);
2309 AV_WL32(fside->data, avctx->internal->skip_samples);
2310 AV_WL32(fside->data + 4, discard_padding);
2311 AV_WL8(fside->data + 8, skip_reason);
2312 AV_WL8(fside->data + 9, discard_reason);
2313 avctx->internal->skip_samples = 0;
2317 avctx->internal->pkt = NULL;
2319 av_packet_free_side_data(&tmp);
2324 if (ret >= 0 && *got_frame_ptr) {
2325 if (!avctx->refcounted_frames) {
2326 int err = unrefcount_frame(avci, frame);
2331 av_frame_unref(frame);
2337 #define UTF8_MAX_BYTES 4 /* 5 and 6 bytes sequences should not be used */
2338 static int recode_subtitle(AVCodecContext *avctx,
2339 AVPacket *outpkt, const AVPacket *inpkt)
2342 iconv_t cd = (iconv_t)-1;
2349 if (avctx->sub_charenc_mode != FF_SUB_CHARENC_MODE_PRE_DECODER || inpkt->size == 0)
2353 cd = iconv_open("UTF-8", avctx->sub_charenc);
2354 av_assert0(cd != (iconv_t)-1);
2359 if (inl >= INT_MAX / UTF8_MAX_BYTES - AV_INPUT_BUFFER_PADDING_SIZE) {
2360 av_log(avctx, AV_LOG_ERROR, "Subtitles packet is too big for recoding\n");
2361 ret = AVERROR(ENOMEM);
2365 ret = av_new_packet(&tmp, inl * UTF8_MAX_BYTES);
2368 outpkt->buf = tmp.buf;
2369 outpkt->data = tmp.data;
2370 outpkt->size = tmp.size;
2371 outb = outpkt->data;
2372 outl = outpkt->size;
2374 if (iconv(cd, &inb, &inl, &outb, &outl) == (size_t)-1 ||
2375 iconv(cd, NULL, NULL, &outb, &outl) == (size_t)-1 ||
2376 outl >= outpkt->size || inl != 0) {
2377 ret = FFMIN(AVERROR(errno), -1);
2378 av_log(avctx, AV_LOG_ERROR, "Unable to recode subtitle event \"%s\" "
2379 "from %s to UTF-8\n", inpkt->data, avctx->sub_charenc);
2380 av_packet_unref(&tmp);
2383 outpkt->size -= outl;
2384 memset(outpkt->data + outpkt->size, 0, outl);
2387 if (cd != (iconv_t)-1)
2391 av_log(avctx, AV_LOG_ERROR, "requesting subtitles recoding without iconv");
2392 return AVERROR(EINVAL);
2396 static int utf8_check(const uint8_t *str)
2398 const uint8_t *byte;
2399 uint32_t codepoint, min;
2403 GET_UTF8(codepoint, *(byte++), return 0;);
2404 min = byte - str == 1 ? 0 : byte - str == 2 ? 0x80 :
2405 1 << (5 * (byte - str) - 4);
2406 if (codepoint < min || codepoint >= 0x110000 ||
2407 codepoint == 0xFFFE /* BOM */ ||
2408 codepoint >= 0xD800 && codepoint <= 0xDFFF /* surrogates */)
2415 int avcodec_decode_subtitle2(AVCodecContext *avctx, AVSubtitle *sub,
2421 if (!avpkt->data && avpkt->size) {
2422 av_log(avctx, AV_LOG_ERROR, "invalid packet: NULL data, size != 0\n");
2423 return AVERROR(EINVAL);
2426 return AVERROR(EINVAL);
2427 if (avctx->codec->type != AVMEDIA_TYPE_SUBTITLE) {
2428 av_log(avctx, AV_LOG_ERROR, "Invalid media type for subtitles\n");
2429 return AVERROR(EINVAL);
2433 get_subtitle_defaults(sub);
2435 if ((avctx->codec->capabilities & AV_CODEC_CAP_DELAY) || avpkt->size) {
2436 AVPacket pkt_recoded;
2437 AVPacket tmp = *avpkt;
2438 int did_split = av_packet_split_side_data(&tmp);
2439 //apply_param_change(avctx, &tmp);
2442 /* FFMIN() prevents overflow in case the packet wasn't allocated with
2444 * If the side data is smaller than the buffer padding size, the
2445 * remaining bytes should have already been filled with zeros by the
2446 * original packet allocation anyway. */
2447 memset(tmp.data + tmp.size, 0,
2448 FFMIN(avpkt->size - tmp.size, AV_INPUT_BUFFER_PADDING_SIZE));
2452 ret = recode_subtitle(avctx, &pkt_recoded, &tmp);
2456 avctx->internal->pkt = &pkt_recoded;
2458 if (avctx->pkt_timebase.num && avpkt->pts != AV_NOPTS_VALUE)
2459 sub->pts = av_rescale_q(avpkt->pts,
2460 avctx->pkt_timebase, AV_TIME_BASE_Q);
2461 ret = avctx->codec->decode(avctx, sub, got_sub_ptr, &pkt_recoded);
2462 av_assert1((ret >= 0) >= !!*got_sub_ptr &&
2463 !!*got_sub_ptr >= !!sub->num_rects);
2465 if (sub->num_rects && !sub->end_display_time && avpkt->duration &&
2466 avctx->pkt_timebase.num) {
2467 AVRational ms = { 1, 1000 };
2468 sub->end_display_time = av_rescale_q(avpkt->duration,
2469 avctx->pkt_timebase, ms);
2472 for (i = 0; i < sub->num_rects; i++) {
2473 if (sub->rects[i]->ass && !utf8_check(sub->rects[i]->ass)) {
2474 av_log(avctx, AV_LOG_ERROR,
2475 "Invalid UTF-8 in decoded subtitles text; "
2476 "maybe missing -sub_charenc option\n");
2477 avsubtitle_free(sub);
2478 return AVERROR_INVALIDDATA;
2482 if (tmp.data != pkt_recoded.data) { // did we recode?
2483 /* prevent from destroying side data from original packet */
2484 pkt_recoded.side_data = NULL;
2485 pkt_recoded.side_data_elems = 0;
2487 av_packet_unref(&pkt_recoded);
2489 if (avctx->codec_descriptor->props & AV_CODEC_PROP_BITMAP_SUB)
2491 else if (avctx->codec_descriptor->props & AV_CODEC_PROP_TEXT_SUB)
2493 avctx->internal->pkt = NULL;
2497 av_packet_free_side_data(&tmp);
2503 avctx->frame_number++;
2509 void avsubtitle_free(AVSubtitle *sub)
2513 for (i = 0; i < sub->num_rects; i++) {
2514 av_freep(&sub->rects[i]->data[0]);
2515 av_freep(&sub->rects[i]->data[1]);
2516 av_freep(&sub->rects[i]->data[2]);
2517 av_freep(&sub->rects[i]->data[3]);
2518 av_freep(&sub->rects[i]->text);
2519 av_freep(&sub->rects[i]->ass);
2520 av_freep(&sub->rects[i]);
2523 av_freep(&sub->rects);
2525 memset(sub, 0, sizeof(AVSubtitle));
2528 av_cold int avcodec_close(AVCodecContext *avctx)
2535 if (avcodec_is_open(avctx)) {
2536 FramePool *pool = avctx->internal->pool;
2537 if (CONFIG_FRAME_THREAD_ENCODER &&
2538 avctx->internal->frame_thread_encoder && avctx->thread_count > 1) {
2539 ff_frame_thread_encoder_free(avctx);
2541 if (HAVE_THREADS && avctx->internal->thread_ctx)
2542 ff_thread_free(avctx);
2543 if (avctx->codec && avctx->codec->close)
2544 avctx->codec->close(avctx);
2545 avctx->internal->byte_buffer_size = 0;
2546 av_freep(&avctx->internal->byte_buffer);
2547 av_frame_free(&avctx->internal->to_free);
2548 for (i = 0; i < FF_ARRAY_ELEMS(pool->pools); i++)
2549 av_buffer_pool_uninit(&pool->pools[i]);
2550 av_freep(&avctx->internal->pool);
2552 if (avctx->hwaccel && avctx->hwaccel->uninit)
2553 avctx->hwaccel->uninit(avctx);
2554 av_freep(&avctx->internal->hwaccel_priv_data);
2556 av_freep(&avctx->internal);
2559 for (i = 0; i < avctx->nb_coded_side_data; i++)
2560 av_freep(&avctx->coded_side_data[i].data);
2561 av_freep(&avctx->coded_side_data);
2562 avctx->nb_coded_side_data = 0;
2564 if (avctx->priv_data && avctx->codec && avctx->codec->priv_class)
2565 av_opt_free(avctx->priv_data);
2567 av_freep(&avctx->priv_data);
2568 if (av_codec_is_encoder(avctx->codec)) {
2569 av_freep(&avctx->extradata);
2570 #if FF_API_CODED_FRAME
2571 FF_DISABLE_DEPRECATION_WARNINGS
2572 av_frame_free(&avctx->coded_frame);
2573 FF_ENABLE_DEPRECATION_WARNINGS
2576 avctx->codec = NULL;
2577 avctx->active_thread_type = 0;
2582 static enum AVCodecID remap_deprecated_codec_id(enum AVCodecID id)
2585 //This is for future deprecatec codec ids, its empty since
2586 //last major bump but will fill up again over time, please don't remove it
2587 default : return id;
2591 static AVCodec *find_encdec(enum AVCodecID id, int encoder)
2593 AVCodec *p, *experimental = NULL;
2595 id= remap_deprecated_codec_id(id);
2597 if ((encoder ? av_codec_is_encoder(p) : av_codec_is_decoder(p)) &&
2599 if (p->capabilities & AV_CODEC_CAP_EXPERIMENTAL && !experimental) {
2606 return experimental;
2609 AVCodec *avcodec_find_encoder(enum AVCodecID id)
2611 return find_encdec(id, 1);
2614 AVCodec *avcodec_find_encoder_by_name(const char *name)
2621 if (av_codec_is_encoder(p) && strcmp(name, p->name) == 0)
2628 AVCodec *avcodec_find_decoder(enum AVCodecID id)
2630 return find_encdec(id, 0);
2633 AVCodec *avcodec_find_decoder_by_name(const char *name)
2640 if (av_codec_is_decoder(p) && strcmp(name, p->name) == 0)
2647 const char *avcodec_get_name(enum AVCodecID id)
2649 const AVCodecDescriptor *cd;
2652 if (id == AV_CODEC_ID_NONE)
2654 cd = avcodec_descriptor_get(id);
2657 av_log(NULL, AV_LOG_WARNING, "Codec 0x%x is not in the full list.\n", id);
2658 codec = avcodec_find_decoder(id);
2661 codec = avcodec_find_encoder(id);
2664 return "unknown_codec";
2667 size_t av_get_codec_tag_string(char *buf, size_t buf_size, unsigned int codec_tag)
2669 int i, len, ret = 0;
2671 #define TAG_PRINT(x) \
2672 (((x) >= '0' && (x) <= '9') || \
2673 ((x) >= 'a' && (x) <= 'z') || ((x) >= 'A' && (x) <= 'Z') || \
2674 ((x) == '.' || (x) == ' ' || (x) == '-' || (x) == '_'))
2676 for (i = 0; i < 4; i++) {
2677 len = snprintf(buf, buf_size,
2678 TAG_PRINT(codec_tag & 0xFF) ? "%c" : "[%d]", codec_tag & 0xFF);
2680 buf_size = buf_size > len ? buf_size - len : 0;
2687 void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)
2689 const char *codec_type;
2690 const char *codec_name;
2691 const char *profile = NULL;
2694 AVRational display_aspect_ratio;
2695 const char *separator = enc->dump_separator ? (const char *)enc->dump_separator : ", ";
2697 if (!buf || buf_size <= 0)
2699 codec_type = av_get_media_type_string(enc->codec_type);
2700 codec_name = avcodec_get_name(enc->codec_id);
2701 profile = avcodec_profile_name(enc->codec_id, enc->profile);
2703 snprintf(buf, buf_size, "%s: %s", codec_type ? codec_type : "unknown",
2705 buf[0] ^= 'a' ^ 'A'; /* first letter in uppercase */
2707 if (enc->codec && strcmp(enc->codec->name, codec_name))
2708 snprintf(buf + strlen(buf), buf_size - strlen(buf), " (%s)", enc->codec->name);
2711 snprintf(buf + strlen(buf), buf_size - strlen(buf), " (%s)", profile);
2712 if ( enc->codec_type == AVMEDIA_TYPE_VIDEO
2713 && av_log_get_level() >= AV_LOG_VERBOSE
2715 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2716 ", %d reference frame%s",
2717 enc->refs, enc->refs > 1 ? "s" : "");
2719 if (enc->codec_tag) {
2721 av_get_codec_tag_string(tag_buf, sizeof(tag_buf), enc->codec_tag);
2722 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2723 " (%s / 0x%04X)", tag_buf, enc->codec_tag);
2726 switch (enc->codec_type) {
2727 case AVMEDIA_TYPE_VIDEO:
2729 char detail[256] = "(";
2731 av_strlcat(buf, separator, buf_size);
2733 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2734 "%s", enc->pix_fmt == AV_PIX_FMT_NONE ? "none" :
2735 av_get_pix_fmt_name(enc->pix_fmt));
2736 if (enc->bits_per_raw_sample && enc->pix_fmt != AV_PIX_FMT_NONE &&
2737 enc->bits_per_raw_sample < av_pix_fmt_desc_get(enc->pix_fmt)->comp[0].depth)
2738 av_strlcatf(detail, sizeof(detail), "%d bpc, ", enc->bits_per_raw_sample);
2739 if (enc->color_range != AVCOL_RANGE_UNSPECIFIED)
2740 av_strlcatf(detail, sizeof(detail), "%s, ",
2741 av_color_range_name(enc->color_range));
2743 if (enc->colorspace != AVCOL_SPC_UNSPECIFIED ||
2744 enc->color_primaries != AVCOL_PRI_UNSPECIFIED ||
2745 enc->color_trc != AVCOL_TRC_UNSPECIFIED) {
2746 if (enc->colorspace != (int)enc->color_primaries ||
2747 enc->colorspace != (int)enc->color_trc) {
2749 av_strlcatf(detail, sizeof(detail), "%s/%s/%s, ",
2750 av_color_space_name(enc->colorspace),
2751 av_color_primaries_name(enc->color_primaries),
2752 av_color_transfer_name(enc->color_trc));
2754 av_strlcatf(detail, sizeof(detail), "%s, ",
2755 av_get_colorspace_name(enc->colorspace));
2758 if (av_log_get_level() >= AV_LOG_DEBUG &&
2759 enc->chroma_sample_location != AVCHROMA_LOC_UNSPECIFIED)
2760 av_strlcatf(detail, sizeof(detail), "%s, ",
2761 av_chroma_location_name(enc->chroma_sample_location));
2763 if (strlen(detail) > 1) {
2764 detail[strlen(detail) - 2] = 0;
2765 av_strlcatf(buf, buf_size, "%s)", detail);
2770 av_strlcat(buf, new_line ? separator : ", ", buf_size);
2772 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2774 enc->width, enc->height);
2776 if (av_log_get_level() >= AV_LOG_VERBOSE &&
2777 (enc->width != enc->coded_width ||
2778 enc->height != enc->coded_height))
2779 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2780 " (%dx%d)", enc->coded_width, enc->coded_height);
2782 if (enc->sample_aspect_ratio.num) {
2783 av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
2784 enc->width * (int64_t)enc->sample_aspect_ratio.num,
2785 enc->height * (int64_t)enc->sample_aspect_ratio.den,
2787 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2788 " [SAR %d:%d DAR %d:%d]",
2789 enc->sample_aspect_ratio.num, enc->sample_aspect_ratio.den,
2790 display_aspect_ratio.num, display_aspect_ratio.den);
2792 if (av_log_get_level() >= AV_LOG_DEBUG) {
2793 int g = av_gcd(enc->time_base.num, enc->time_base.den);
2794 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2796 enc->time_base.num / g, enc->time_base.den / g);
2800 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2801 ", q=%d-%d", enc->qmin, enc->qmax);
2803 if (enc->properties & FF_CODEC_PROPERTY_CLOSED_CAPTIONS)
2804 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2805 ", Closed Captions");
2806 if (enc->properties & FF_CODEC_PROPERTY_LOSSLESS)
2807 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2811 case AVMEDIA_TYPE_AUDIO:
2812 av_strlcat(buf, separator, buf_size);
2814 if (enc->sample_rate) {
2815 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2816 "%d Hz, ", enc->sample_rate);
2818 av_get_channel_layout_string(buf + strlen(buf), buf_size - strlen(buf), enc->channels, enc->channel_layout);
2819 if (enc->sample_fmt != AV_SAMPLE_FMT_NONE) {
2820 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2821 ", %s", av_get_sample_fmt_name(enc->sample_fmt));
2823 if ( enc->bits_per_raw_sample > 0
2824 && enc->bits_per_raw_sample != av_get_bytes_per_sample(enc->sample_fmt) * 8)
2825 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2826 " (%d bit)", enc->bits_per_raw_sample);
2828 case AVMEDIA_TYPE_DATA:
2829 if (av_log_get_level() >= AV_LOG_DEBUG) {
2830 int g = av_gcd(enc->time_base.num, enc->time_base.den);
2832 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2834 enc->time_base.num / g, enc->time_base.den / g);
2837 case AVMEDIA_TYPE_SUBTITLE:
2839 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2840 ", %dx%d", enc->width, enc->height);
2846 if (enc->flags & AV_CODEC_FLAG_PASS1)
2847 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2849 if (enc->flags & AV_CODEC_FLAG_PASS2)
2850 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2853 bitrate = get_bit_rate(enc);
2855 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2856 ", %"PRId64" kb/s", bitrate / 1000);
2857 } else if (enc->rc_max_rate > 0) {
2858 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2859 ", max. %"PRId64" kb/s", (int64_t)enc->rc_max_rate / 1000);
2863 const char *av_get_profile_name(const AVCodec *codec, int profile)
2866 if (profile == FF_PROFILE_UNKNOWN || !codec->profiles)
2869 for (p = codec->profiles; p->profile != FF_PROFILE_UNKNOWN; p++)
2870 if (p->profile == profile)
2876 const char *avcodec_profile_name(enum AVCodecID codec_id, int profile)
2878 const AVCodecDescriptor *desc = avcodec_descriptor_get(codec_id);
2881 if (profile == FF_PROFILE_UNKNOWN || !desc || !desc->profiles)
2884 for (p = desc->profiles; p->profile != FF_PROFILE_UNKNOWN; p++)
2885 if (p->profile == profile)
2891 unsigned avcodec_version(void)
2893 // av_assert0(AV_CODEC_ID_V410==164);
2894 av_assert0(AV_CODEC_ID_PCM_S8_PLANAR==65563);
2895 av_assert0(AV_CODEC_ID_ADPCM_G722==69660);
2896 // av_assert0(AV_CODEC_ID_BMV_AUDIO==86071);
2897 av_assert0(AV_CODEC_ID_SRT==94216);
2898 av_assert0(LIBAVCODEC_VERSION_MICRO >= 100);
2900 return LIBAVCODEC_VERSION_INT;
2903 const char *avcodec_configuration(void)
2905 return FFMPEG_CONFIGURATION;
2908 const char *avcodec_license(void)
2910 #define LICENSE_PREFIX "libavcodec license: "
2911 return LICENSE_PREFIX FFMPEG_LICENSE + sizeof(LICENSE_PREFIX) - 1;
2914 void avcodec_flush_buffers(AVCodecContext *avctx)
2916 if (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME)
2917 ff_thread_flush(avctx);
2918 else if (avctx->codec->flush)
2919 avctx->codec->flush(avctx);
2921 avctx->pts_correction_last_pts =
2922 avctx->pts_correction_last_dts = INT64_MIN;
2924 if (!avctx->refcounted_frames)
2925 av_frame_unref(avctx->internal->to_free);
2928 int av_get_exact_bits_per_sample(enum AVCodecID codec_id)
2931 case AV_CODEC_ID_8SVX_EXP:
2932 case AV_CODEC_ID_8SVX_FIB:
2933 case AV_CODEC_ID_ADPCM_CT:
2934 case AV_CODEC_ID_ADPCM_IMA_APC:
2935 case AV_CODEC_ID_ADPCM_IMA_EA_SEAD:
2936 case AV_CODEC_ID_ADPCM_IMA_OKI:
2937 case AV_CODEC_ID_ADPCM_IMA_WS:
2938 case AV_CODEC_ID_ADPCM_G722:
2939 case AV_CODEC_ID_ADPCM_YAMAHA:
2940 case AV_CODEC_ID_ADPCM_AICA:
2942 case AV_CODEC_ID_DSD_LSBF:
2943 case AV_CODEC_ID_DSD_MSBF:
2944 case AV_CODEC_ID_DSD_LSBF_PLANAR:
2945 case AV_CODEC_ID_DSD_MSBF_PLANAR:
2946 case AV_CODEC_ID_PCM_ALAW:
2947 case AV_CODEC_ID_PCM_MULAW:
2948 case AV_CODEC_ID_PCM_S8:
2949 case AV_CODEC_ID_PCM_S8_PLANAR:
2950 case AV_CODEC_ID_PCM_U8:
2951 case AV_CODEC_ID_PCM_ZORK:
2952 case AV_CODEC_ID_SDX2_DPCM:
2954 case AV_CODEC_ID_PCM_S16BE:
2955 case AV_CODEC_ID_PCM_S16BE_PLANAR:
2956 case AV_CODEC_ID_PCM_S16LE:
2957 case AV_CODEC_ID_PCM_S16LE_PLANAR:
2958 case AV_CODEC_ID_PCM_U16BE:
2959 case AV_CODEC_ID_PCM_U16LE:
2961 case AV_CODEC_ID_PCM_S24DAUD:
2962 case AV_CODEC_ID_PCM_S24BE:
2963 case AV_CODEC_ID_PCM_S24LE:
2964 case AV_CODEC_ID_PCM_S24LE_PLANAR:
2965 case AV_CODEC_ID_PCM_U24BE:
2966 case AV_CODEC_ID_PCM_U24LE:
2968 case AV_CODEC_ID_PCM_S32BE:
2969 case AV_CODEC_ID_PCM_S32LE:
2970 case AV_CODEC_ID_PCM_S32LE_PLANAR:
2971 case AV_CODEC_ID_PCM_U32BE:
2972 case AV_CODEC_ID_PCM_U32LE:
2973 case AV_CODEC_ID_PCM_F32BE:
2974 case AV_CODEC_ID_PCM_F32LE:
2976 case AV_CODEC_ID_PCM_F64BE:
2977 case AV_CODEC_ID_PCM_F64LE:
2984 enum AVCodecID av_get_pcm_codec(enum AVSampleFormat fmt, int be)
2986 static const enum AVCodecID map[AV_SAMPLE_FMT_NB][2] = {
2987 [AV_SAMPLE_FMT_U8 ] = { AV_CODEC_ID_PCM_U8, AV_CODEC_ID_PCM_U8 },
2988 [AV_SAMPLE_FMT_S16 ] = { AV_CODEC_ID_PCM_S16LE, AV_CODEC_ID_PCM_S16BE },
2989 [AV_SAMPLE_FMT_S32 ] = { AV_CODEC_ID_PCM_S32LE, AV_CODEC_ID_PCM_S32BE },
2990 [AV_SAMPLE_FMT_FLT ] = { AV_CODEC_ID_PCM_F32LE, AV_CODEC_ID_PCM_F32BE },
2991 [AV_SAMPLE_FMT_DBL ] = { AV_CODEC_ID_PCM_F64LE, AV_CODEC_ID_PCM_F64BE },
2992 [AV_SAMPLE_FMT_U8P ] = { AV_CODEC_ID_PCM_U8, AV_CODEC_ID_PCM_U8 },
2993 [AV_SAMPLE_FMT_S16P] = { AV_CODEC_ID_PCM_S16LE, AV_CODEC_ID_PCM_S16BE },
2994 [AV_SAMPLE_FMT_S32P] = { AV_CODEC_ID_PCM_S32LE, AV_CODEC_ID_PCM_S32BE },
2995 [AV_SAMPLE_FMT_FLTP] = { AV_CODEC_ID_PCM_F32LE, AV_CODEC_ID_PCM_F32BE },
2996 [AV_SAMPLE_FMT_DBLP] = { AV_CODEC_ID_PCM_F64LE, AV_CODEC_ID_PCM_F64BE },
2998 if (fmt < 0 || fmt >= AV_SAMPLE_FMT_NB)
2999 return AV_CODEC_ID_NONE;
3000 if (be < 0 || be > 1)
3002 return map[fmt][be];
3005 int av_get_bits_per_sample(enum AVCodecID codec_id)
3008 case AV_CODEC_ID_ADPCM_SBPRO_2:
3010 case AV_CODEC_ID_ADPCM_SBPRO_3:
3012 case AV_CODEC_ID_ADPCM_SBPRO_4:
3013 case AV_CODEC_ID_ADPCM_IMA_WAV:
3014 case AV_CODEC_ID_ADPCM_IMA_QT:
3015 case AV_CODEC_ID_ADPCM_SWF:
3016 case AV_CODEC_ID_ADPCM_MS:
3019 return av_get_exact_bits_per_sample(codec_id);
3023 int av_get_audio_frame_duration(AVCodecContext *avctx, int frame_bytes)
3025 int id, sr, ch, ba, tag, bps;
3027 id = avctx->codec_id;
3028 sr = avctx->sample_rate;
3029 ch = avctx->channels;
3030 ba = avctx->block_align;
3031 tag = avctx->codec_tag;
3032 bps = av_get_exact_bits_per_sample(avctx->codec_id);
3034 /* codecs with an exact constant bits per sample */
3035 if (bps > 0 && ch > 0 && frame_bytes > 0 && ch < 32768 && bps < 32768)
3036 return (frame_bytes * 8LL) / (bps * ch);
3037 bps = avctx->bits_per_coded_sample;
3039 /* codecs with a fixed packet duration */
3041 case AV_CODEC_ID_ADPCM_ADX: return 32;
3042 case AV_CODEC_ID_ADPCM_IMA_QT: return 64;
3043 case AV_CODEC_ID_ADPCM_EA_XAS: return 128;
3044 case AV_CODEC_ID_AMR_NB:
3045 case AV_CODEC_ID_EVRC:
3046 case AV_CODEC_ID_GSM:
3047 case AV_CODEC_ID_QCELP:
3048 case AV_CODEC_ID_RA_288: return 160;
3049 case AV_CODEC_ID_AMR_WB:
3050 case AV_CODEC_ID_GSM_MS: return 320;
3051 case AV_CODEC_ID_MP1: return 384;
3052 case AV_CODEC_ID_ATRAC1: return 512;
3053 case AV_CODEC_ID_ATRAC3: return 1024;
3054 case AV_CODEC_ID_ATRAC3P: return 2048;
3055 case AV_CODEC_ID_MP2:
3056 case AV_CODEC_ID_MUSEPACK7: return 1152;
3057 case AV_CODEC_ID_AC3: return 1536;
3061 /* calc from sample rate */
3062 if (id == AV_CODEC_ID_TTA)
3063 return 256 * sr / 245;
3066 /* calc from sample rate and channels */
3067 if (id == AV_CODEC_ID_BINKAUDIO_DCT)
3068 return (480 << (sr / 22050)) / ch;
3073 /* calc from block_align */
3074 if (id == AV_CODEC_ID_SIPR) {
3076 case 20: return 160;
3077 case 19: return 144;
3078 case 29: return 288;
3079 case 37: return 480;
3081 } else if (id == AV_CODEC_ID_ILBC) {
3083 case 38: return 160;
3084 case 50: return 240;
3089 if (frame_bytes > 0) {
3090 /* calc from frame_bytes only */
3091 if (id == AV_CODEC_ID_TRUESPEECH)
3092 return 240 * (frame_bytes / 32);
3093 if (id == AV_CODEC_ID_NELLYMOSER)
3094 return 256 * (frame_bytes / 64);
3095 if (id == AV_CODEC_ID_RA_144)
3096 return 160 * (frame_bytes / 20);
3097 if (id == AV_CODEC_ID_G723_1)
3098 return 240 * (frame_bytes / 24);
3101 /* calc from frame_bytes and bits_per_coded_sample */
3102 if (id == AV_CODEC_ID_ADPCM_G726)
3103 return frame_bytes * 8 / bps;
3106 if (ch > 0 && ch < INT_MAX/16) {
3107 /* calc from frame_bytes and channels */
3109 case AV_CODEC_ID_ADPCM_AFC:
3110 return frame_bytes / (9 * ch) * 16;
3111 case AV_CODEC_ID_ADPCM_PSX:
3112 case AV_CODEC_ID_ADPCM_DTK:
3113 return frame_bytes / (16 * ch) * 28;
3114 case AV_CODEC_ID_ADPCM_4XM:
3115 case AV_CODEC_ID_ADPCM_IMA_ISS:
3116 return (frame_bytes - 4 * ch) * 2 / ch;
3117 case AV_CODEC_ID_ADPCM_IMA_SMJPEG:
3118 return (frame_bytes - 4) * 2 / ch;
3119 case AV_CODEC_ID_ADPCM_IMA_AMV:
3120 return (frame_bytes - 8) * 2 / ch;
3121 case AV_CODEC_ID_ADPCM_THP:
3122 case AV_CODEC_ID_ADPCM_THP_LE:
3123 if (avctx->extradata)
3124 return frame_bytes * 14 / (8 * ch);
3126 case AV_CODEC_ID_ADPCM_XA:
3127 return (frame_bytes / 128) * 224 / ch;
3128 case AV_CODEC_ID_INTERPLAY_DPCM:
3129 return (frame_bytes - 6 - ch) / ch;
3130 case AV_CODEC_ID_ROQ_DPCM:
3131 return (frame_bytes - 8) / ch;
3132 case AV_CODEC_ID_XAN_DPCM:
3133 return (frame_bytes - 2 * ch) / ch;
3134 case AV_CODEC_ID_MACE3:
3135 return 3 * frame_bytes / ch;
3136 case AV_CODEC_ID_MACE6:
3137 return 6 * frame_bytes / ch;
3138 case AV_CODEC_ID_PCM_LXF:
3139 return 2 * (frame_bytes / (5 * ch));
3140 case AV_CODEC_ID_IAC:
3141 case AV_CODEC_ID_IMC:
3142 return 4 * frame_bytes / ch;
3146 /* calc from frame_bytes, channels, and codec_tag */
3147 if (id == AV_CODEC_ID_SOL_DPCM) {
3149 return frame_bytes / ch;
3151 return frame_bytes * 2 / ch;
3156 /* calc from frame_bytes, channels, and block_align */
3157 int blocks = frame_bytes / ba;
3158 switch (avctx->codec_id) {
3159 case AV_CODEC_ID_ADPCM_IMA_WAV:
3160 if (bps < 2 || bps > 5)
3162 return blocks * (1 + (ba - 4 * ch) / (bps * ch) * 8);
3163 case AV_CODEC_ID_ADPCM_IMA_DK3:
3164 return blocks * (((ba - 16) * 2 / 3 * 4) / ch);
3165 case AV_CODEC_ID_ADPCM_IMA_DK4:
3166 return blocks * (1 + (ba - 4 * ch) * 2 / ch);
3167 case AV_CODEC_ID_ADPCM_IMA_RAD:
3168 return blocks * ((ba - 4 * ch) * 2 / ch);
3169 case AV_CODEC_ID_ADPCM_MS:
3170 return blocks * (2 + (ba - 7 * ch) * 2 / ch);
3175 /* calc from frame_bytes, channels, and bits_per_coded_sample */
3176 switch (avctx->codec_id) {
3177 case AV_CODEC_ID_PCM_DVD:
3180 return 2 * (frame_bytes / ((bps * 2 / 8) * ch));
3181 case AV_CODEC_ID_PCM_BLURAY:
3184 return frame_bytes / ((FFALIGN(ch, 2) * bps) / 8);
3185 case AV_CODEC_ID_S302M:
3186 return 2 * (frame_bytes / ((bps + 4) / 4)) / ch;
3192 /* Fall back on using frame_size */
3193 if (avctx->frame_size > 1 && frame_bytes)
3194 return avctx->frame_size;
3196 //For WMA we currently have no other means to calculate duration thus we
3197 //do it here by assuming CBR, which is true for all known cases.
3198 if (avctx->bit_rate>0 && frame_bytes>0 && avctx->sample_rate>0 && avctx->block_align>1) {
3199 if (avctx->codec_id == AV_CODEC_ID_WMAV1 || avctx->codec_id == AV_CODEC_ID_WMAV2)
3200 return (frame_bytes * 8LL * avctx->sample_rate) / avctx->bit_rate;
3207 int ff_thread_init(AVCodecContext *s)
3214 unsigned int av_xiphlacing(unsigned char *s, unsigned int v)
3228 int ff_match_2uint16(const uint16_t(*tab)[2], int size, int a, int b)
3231 for (i = 0; i < size && !(tab[i][0] == a && tab[i][1] == b); i++) ;
3235 #if FF_API_MISSING_SAMPLE
3236 FF_DISABLE_DEPRECATION_WARNINGS
3237 void av_log_missing_feature(void *avc, const char *feature, int want_sample)
3239 av_log(avc, AV_LOG_WARNING, "%s is not implemented. Update your FFmpeg "
3240 "version to the newest one from Git. If the problem still "
3241 "occurs, it means that your file has a feature which has not "
3242 "been implemented.\n", feature);
3244 av_log_ask_for_sample(avc, NULL);
3247 void av_log_ask_for_sample(void *avc, const char *msg, ...)
3249 va_list argument_list;
3251 va_start(argument_list, msg);
3254 av_vlog(avc, AV_LOG_WARNING, msg, argument_list);
3255 av_log(avc, AV_LOG_WARNING, "If you want to help, upload a sample "
3256 "of this file to ftp://upload.ffmpeg.org/incoming/ "
3257 "and contact the ffmpeg-devel mailing list. (ffmpeg-devel@ffmpeg.org)\n");
3259 va_end(argument_list);
3261 FF_ENABLE_DEPRECATION_WARNINGS
3262 #endif /* FF_API_MISSING_SAMPLE */
3264 static AVHWAccel *first_hwaccel = NULL;
3265 static AVHWAccel **last_hwaccel = &first_hwaccel;
3267 void av_register_hwaccel(AVHWAccel *hwaccel)
3269 AVHWAccel **p = last_hwaccel;
3270 hwaccel->next = NULL;
3271 while(*p || avpriv_atomic_ptr_cas((void * volatile *)p, NULL, hwaccel))
3273 last_hwaccel = &hwaccel->next;
3276 AVHWAccel *av_hwaccel_next(const AVHWAccel *hwaccel)
3278 return hwaccel ? hwaccel->next : first_hwaccel;
3281 int av_lockmgr_register(int (*cb)(void **mutex, enum AVLockOp op))
3284 // There is no good way to rollback a failure to destroy the
3285 // mutex, so we ignore failures.
3286 lockmgr_cb(&codec_mutex, AV_LOCK_DESTROY);
3287 lockmgr_cb(&avformat_mutex, AV_LOCK_DESTROY);
3290 avformat_mutex = NULL;
3294 void *new_codec_mutex = NULL;
3295 void *new_avformat_mutex = NULL;
3297 if (err = cb(&new_codec_mutex, AV_LOCK_CREATE)) {
3298 return err > 0 ? AVERROR_UNKNOWN : err;
3300 if (err = cb(&new_avformat_mutex, AV_LOCK_CREATE)) {
3301 // Ignore failures to destroy the newly created mutex.
3302 cb(&new_codec_mutex, AV_LOCK_DESTROY);
3303 return err > 0 ? AVERROR_UNKNOWN : err;
3306 codec_mutex = new_codec_mutex;
3307 avformat_mutex = new_avformat_mutex;
3313 int ff_lock_avcodec(AVCodecContext *log_ctx, const AVCodec *codec)
3315 if (codec->caps_internal & FF_CODEC_CAP_INIT_THREADSAFE || !codec->init)
3319 if ((*lockmgr_cb)(&codec_mutex, AV_LOCK_OBTAIN))
3323 if (avpriv_atomic_int_add_and_fetch(&entangled_thread_counter, 1) != 1) {
3324 av_log(log_ctx, AV_LOG_ERROR,
3325 "Insufficient thread locking. At least %d threads are "
3326 "calling avcodec_open2() at the same time right now.\n",
3327 entangled_thread_counter);
3329 av_log(log_ctx, AV_LOG_ERROR, "No lock manager is set, please see av_lockmgr_register()\n");
3330 ff_avcodec_locked = 1;
3331 ff_unlock_avcodec(codec);
3332 return AVERROR(EINVAL);
3334 av_assert0(!ff_avcodec_locked);
3335 ff_avcodec_locked = 1;
3339 int ff_unlock_avcodec(const AVCodec *codec)
3341 if (codec->caps_internal & FF_CODEC_CAP_INIT_THREADSAFE || !codec->init)
3344 av_assert0(ff_avcodec_locked);
3345 ff_avcodec_locked = 0;
3346 avpriv_atomic_int_add_and_fetch(&entangled_thread_counter, -1);
3348 if ((*lockmgr_cb)(&codec_mutex, AV_LOCK_RELEASE))
3355 int avpriv_lock_avformat(void)
3358 if ((*lockmgr_cb)(&avformat_mutex, AV_LOCK_OBTAIN))
3364 int avpriv_unlock_avformat(void)
3367 if ((*lockmgr_cb)(&avformat_mutex, AV_LOCK_RELEASE))
3373 unsigned int avpriv_toupper4(unsigned int x)
3375 return av_toupper(x & 0xFF) +
3376 (av_toupper((x >> 8) & 0xFF) << 8) +
3377 (av_toupper((x >> 16) & 0xFF) << 16) +
3378 ((unsigned)av_toupper((x >> 24) & 0xFF) << 24);
3381 int ff_thread_ref_frame(ThreadFrame *dst, ThreadFrame *src)
3385 dst->owner = src->owner;
3387 ret = av_frame_ref(dst->f, src->f);
3391 av_assert0(!dst->progress);
3393 if (src->progress &&
3394 !(dst->progress = av_buffer_ref(src->progress))) {
3395 ff_thread_release_buffer(dst->owner, dst);
3396 return AVERROR(ENOMEM);
3404 enum AVPixelFormat ff_thread_get_format(AVCodecContext *avctx, const enum AVPixelFormat *fmt)
3406 return ff_get_format(avctx, fmt);
3409 int ff_thread_get_buffer(AVCodecContext *avctx, ThreadFrame *f, int flags)
3412 return ff_get_buffer(avctx, f->f, flags);
3415 void ff_thread_release_buffer(AVCodecContext *avctx, ThreadFrame *f)
3418 av_frame_unref(f->f);
3421 void ff_thread_finish_setup(AVCodecContext *avctx)
3425 void ff_thread_report_progress(ThreadFrame *f, int progress, int field)
3429 void ff_thread_await_progress(ThreadFrame *f, int progress, int field)
3433 int ff_thread_can_start_frame(AVCodecContext *avctx)
3438 int ff_alloc_entries(AVCodecContext *avctx, int count)
3443 void ff_reset_entries(AVCodecContext *avctx)
3447 void ff_thread_await_progress2(AVCodecContext *avctx, int field, int thread, int shift)
3451 void ff_thread_report_progress2(AVCodecContext *avctx, int field, int thread, int n)
3457 int avcodec_is_open(AVCodecContext *s)
3459 return !!s->internal;
3462 int avpriv_bprint_to_extradata(AVCodecContext *avctx, struct AVBPrint *buf)
3467 ret = av_bprint_finalize(buf, &str);
3470 if (!av_bprint_is_complete(buf)) {
3472 return AVERROR(ENOMEM);
3475 avctx->extradata = str;
3476 /* Note: the string is NUL terminated (so extradata can be read as a
3477 * string), but the ending character is not accounted in the size (in
3478 * binary formats you are likely not supposed to mux that character). When
3479 * extradata is copied, it is also padded with AV_INPUT_BUFFER_PADDING_SIZE
3481 avctx->extradata_size = buf->len;
3485 const uint8_t *avpriv_find_start_code(const uint8_t *av_restrict p,
3487 uint32_t *av_restrict state)
3491 av_assert0(p <= end);
3495 for (i = 0; i < 3; i++) {
3496 uint32_t tmp = *state << 8;
3497 *state = tmp + *(p++);
3498 if (tmp == 0x100 || p == end)
3503 if (p[-1] > 1 ) p += 3;
3504 else if (p[-2] ) p += 2;
3505 else if (p[-3]|(p[-1]-1)) p++;
3512 p = FFMIN(p, end) - 4;
3513 *state = AV_RB32(p);
3518 AVCPBProperties *av_cpb_properties_alloc(size_t *size)
3520 AVCPBProperties *props = av_mallocz(sizeof(AVCPBProperties));
3525 *size = sizeof(*props);
3527 props->vbv_delay = UINT64_MAX;
3532 AVCPBProperties *ff_add_cpb_side_data(AVCodecContext *avctx)
3534 AVPacketSideData *tmp;
3535 AVCPBProperties *props;
3538 props = av_cpb_properties_alloc(&size);
3542 tmp = av_realloc_array(avctx->coded_side_data, avctx->nb_coded_side_data + 1, sizeof(*tmp));
3548 avctx->coded_side_data = tmp;
3549 avctx->nb_coded_side_data++;
3551 avctx->coded_side_data[avctx->nb_coded_side_data - 1].type = AV_PKT_DATA_CPB_PROPERTIES;
3552 avctx->coded_side_data[avctx->nb_coded_side_data - 1].data = (uint8_t*)props;
3553 avctx->coded_side_data[avctx->nb_coded_side_data - 1].size = size;