3 * Copyright (c) 2001 Fabrice Bellard
4 * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
6 * This file is part of Libav.
8 * Libav 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 * Libav 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 Libav; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
29 #include "libavutil/attributes.h"
30 #include "libavutil/avassert.h"
31 #include "libavutil/avstring.h"
32 #include "libavutil/channel_layout.h"
33 #include "libavutil/crc.h"
34 #include "libavutil/frame.h"
35 #include "libavutil/hwcontext.h"
36 #include "libavutil/internal.h"
37 #include "libavutil/mathematics.h"
38 #include "libavutil/pixdesc.h"
39 #include "libavutil/imgutils.h"
40 #include "libavutil/samplefmt.h"
41 #include "libavutil/dict.h"
43 #include "libavutil/opt.h"
45 #include "mpegvideo.h"
48 #include "bytestream.h"
55 static int volatile entangled_thread_counter = 0;
56 static int (*lockmgr_cb)(void **mutex, enum AVLockOp op);
57 static void *codec_mutex;
58 static void *avformat_mutex;
60 void av_fast_padded_malloc(void *ptr, unsigned int *size, size_t min_size)
63 if (min_size > SIZE_MAX - AV_INPUT_BUFFER_PADDING_SIZE) {
68 av_fast_malloc(p, size, min_size + AV_INPUT_BUFFER_PADDING_SIZE);
70 memset((uint8_t *)*p + min_size, 0, AV_INPUT_BUFFER_PADDING_SIZE);
73 /* encoder management */
74 static AVCodec *first_avcodec = NULL;
76 AVCodec *av_codec_next(const AVCodec *c)
84 static av_cold void avcodec_init(void)
86 static int initialized = 0;
93 ff_me_cmp_init_static();
96 int av_codec_is_encoder(const AVCodec *codec)
98 return codec && (codec->encode_sub || codec->encode2 ||codec->send_frame);
101 int av_codec_is_decoder(const AVCodec *codec)
103 return codec && (codec->decode || codec->send_packet);
106 av_cold void avcodec_register(AVCodec *codec)
116 if (codec->init_static_data)
117 codec->init_static_data(codec);
121 unsigned avcodec_get_edge_width(void)
127 #if FF_API_SET_DIMENSIONS
128 void avcodec_set_dimensions(AVCodecContext *s, int width, int height)
130 ff_set_dimensions(s, width, height);
134 int ff_set_dimensions(AVCodecContext *s, int width, int height)
136 int ret = av_image_check_size(width, height, 0, s);
140 s->width = s->coded_width = width;
141 s->height = s->coded_height = height;
146 int ff_set_sar(AVCodecContext *avctx, AVRational sar)
148 int ret = av_image_check_sar(avctx->width, avctx->height, sar);
151 av_log(avctx, AV_LOG_WARNING, "ignoring invalid SAR: %d/%d\n",
153 avctx->sample_aspect_ratio = (AVRational){ 0, 1 };
156 avctx->sample_aspect_ratio = sar;
161 int ff_side_data_update_matrix_encoding(AVFrame *frame,
162 enum AVMatrixEncoding matrix_encoding)
164 AVFrameSideData *side_data;
165 enum AVMatrixEncoding *data;
167 side_data = av_frame_get_side_data(frame, AV_FRAME_DATA_MATRIXENCODING);
169 side_data = av_frame_new_side_data(frame, AV_FRAME_DATA_MATRIXENCODING,
170 sizeof(enum AVMatrixEncoding));
173 return AVERROR(ENOMEM);
175 data = (enum AVMatrixEncoding*)side_data->data;
176 *data = matrix_encoding;
181 #if HAVE_SIMD_ALIGN_32
182 # define STRIDE_ALIGN 32
183 #elif HAVE_SIMD_ALIGN_16
184 # define STRIDE_ALIGN 16
186 # define STRIDE_ALIGN 8
189 void avcodec_align_dimensions2(AVCodecContext *s, int *width, int *height,
190 int linesize_align[AV_NUM_DATA_POINTERS])
196 switch (s->pix_fmt) {
197 case AV_PIX_FMT_YUV420P:
198 case AV_PIX_FMT_YUYV422:
199 case AV_PIX_FMT_YVYU422:
200 case AV_PIX_FMT_UYVY422:
201 case AV_PIX_FMT_YUV422P:
202 case AV_PIX_FMT_YUV440P:
203 case AV_PIX_FMT_YUV444P:
204 case AV_PIX_FMT_GBRP:
205 case AV_PIX_FMT_GBRAP:
206 case AV_PIX_FMT_GRAY8:
207 case AV_PIX_FMT_GRAY16BE:
208 case AV_PIX_FMT_GRAY16LE:
209 case AV_PIX_FMT_YUVJ420P:
210 case AV_PIX_FMT_YUVJ422P:
211 case AV_PIX_FMT_YUVJ440P:
212 case AV_PIX_FMT_YUVJ444P:
213 case AV_PIX_FMT_YUVA420P:
214 case AV_PIX_FMT_YUVA422P:
215 case AV_PIX_FMT_YUVA444P:
216 case AV_PIX_FMT_YUV420P9LE:
217 case AV_PIX_FMT_YUV420P9BE:
218 case AV_PIX_FMT_YUV420P10LE:
219 case AV_PIX_FMT_YUV420P10BE:
220 case AV_PIX_FMT_YUV422P9LE:
221 case AV_PIX_FMT_YUV422P9BE:
222 case AV_PIX_FMT_YUV422P10LE:
223 case AV_PIX_FMT_YUV422P10BE:
224 case AV_PIX_FMT_YUVA422P10LE:
225 case AV_PIX_FMT_YUVA422P10BE:
226 case AV_PIX_FMT_YUV444P9LE:
227 case AV_PIX_FMT_YUV444P9BE:
228 case AV_PIX_FMT_YUV444P10LE:
229 case AV_PIX_FMT_YUV444P10BE:
230 case AV_PIX_FMT_YUVA444P10LE:
231 case AV_PIX_FMT_YUVA444P10BE:
232 case AV_PIX_FMT_GBRP9LE:
233 case AV_PIX_FMT_GBRP9BE:
234 case AV_PIX_FMT_GBRP10LE:
235 case AV_PIX_FMT_GBRP10BE:
236 case AV_PIX_FMT_GBRAP12LE:
237 case AV_PIX_FMT_GBRAP12BE:
238 w_align = 16; //FIXME assume 16 pixel per macroblock
239 h_align = 16 * 2; // interlaced needs 2 macroblocks height
241 case AV_PIX_FMT_YUV411P:
242 case AV_PIX_FMT_UYYVYY411:
246 case AV_PIX_FMT_YUV410P:
247 if (s->codec_id == AV_CODEC_ID_SVQ1) {
251 case AV_PIX_FMT_RGB555:
252 if (s->codec_id == AV_CODEC_ID_RPZA) {
256 case AV_PIX_FMT_PAL8:
257 case AV_PIX_FMT_BGR8:
258 case AV_PIX_FMT_RGB8:
259 if (s->codec_id == AV_CODEC_ID_SMC) {
264 case AV_PIX_FMT_BGR24:
265 if ((s->codec_id == AV_CODEC_ID_MSZH) ||
266 (s->codec_id == AV_CODEC_ID_ZLIB)) {
277 *width = FFALIGN(*width, w_align);
278 *height = FFALIGN(*height, h_align);
279 if (s->codec_id == AV_CODEC_ID_H264)
280 // some of the optimized chroma MC reads one line too much
283 for (i = 0; i < 4; i++)
284 linesize_align[i] = STRIDE_ALIGN;
287 void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height)
289 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(s->pix_fmt);
290 int chroma_shift = desc->log2_chroma_w;
291 int linesize_align[AV_NUM_DATA_POINTERS];
294 avcodec_align_dimensions2(s, width, height, linesize_align);
295 align = FFMAX(linesize_align[0], linesize_align[3]);
296 linesize_align[1] <<= chroma_shift;
297 linesize_align[2] <<= chroma_shift;
298 align = FFMAX3(align, linesize_align[1], linesize_align[2]);
299 *width = FFALIGN(*width, align);
302 int avcodec_fill_audio_frame(AVFrame *frame, int nb_channels,
303 enum AVSampleFormat sample_fmt, const uint8_t *buf,
304 int buf_size, int align)
306 int ch, planar, needed_size, ret = 0;
308 needed_size = av_samples_get_buffer_size(NULL, nb_channels,
309 frame->nb_samples, sample_fmt,
311 if (buf_size < needed_size)
312 return AVERROR(EINVAL);
314 planar = av_sample_fmt_is_planar(sample_fmt);
315 if (planar && nb_channels > AV_NUM_DATA_POINTERS) {
316 if (!(frame->extended_data = av_mallocz(nb_channels *
317 sizeof(*frame->extended_data))))
318 return AVERROR(ENOMEM);
320 frame->extended_data = frame->data;
323 if ((ret = av_samples_fill_arrays(frame->extended_data, &frame->linesize[0],
324 buf, nb_channels, frame->nb_samples,
325 sample_fmt, align)) < 0) {
326 if (frame->extended_data != frame->data)
327 av_free(frame->extended_data);
330 if (frame->extended_data != frame->data) {
331 for (ch = 0; ch < AV_NUM_DATA_POINTERS; ch++)
332 frame->data[ch] = frame->extended_data[ch];
338 int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2), void *arg, int *ret, int count, int size)
342 for (i = 0; i < count; i++) {
343 int r = func(c, (char *)arg + i * size);
350 int avcodec_default_execute2(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2, int jobnr, int threadnr), void *arg, int *ret, int count)
354 for (i = 0; i < count; i++) {
355 int r = func(c, arg, i, 0);
362 int attribute_align_arg avcodec_open2(AVCodecContext *avctx, const AVCodec *codec, AVDictionary **options)
365 AVDictionary *tmp = NULL;
367 if (avcodec_is_open(avctx))
370 if ((!codec && !avctx->codec)) {
371 av_log(avctx, AV_LOG_ERROR, "No codec provided to avcodec_open2().\n");
372 return AVERROR(EINVAL);
374 if ((codec && avctx->codec && codec != avctx->codec)) {
375 av_log(avctx, AV_LOG_ERROR, "This AVCodecContext was allocated for %s, "
376 "but %s passed to avcodec_open2().\n", avctx->codec->name, codec->name);
377 return AVERROR(EINVAL);
380 codec = avctx->codec;
382 if (avctx->extradata_size < 0 || avctx->extradata_size >= FF_MAX_EXTRADATA_SIZE)
383 return AVERROR(EINVAL);
386 av_dict_copy(&tmp, *options, 0);
388 /* If there is a user-supplied mutex locking routine, call it. */
389 if (!(codec->caps_internal & FF_CODEC_CAP_INIT_THREADSAFE) && codec->init) {
391 if ((*lockmgr_cb)(&codec_mutex, AV_LOCK_OBTAIN))
395 entangled_thread_counter++;
396 if (entangled_thread_counter != 1) {
397 av_log(avctx, AV_LOG_ERROR,
398 "Insufficient thread locking. At least %d threads are "
399 "calling avcodec_open2() at the same time right now.\n",
400 entangled_thread_counter);
406 avctx->internal = av_mallocz(sizeof(AVCodecInternal));
407 if (!avctx->internal) {
408 ret = AVERROR(ENOMEM);
412 avctx->internal->pool = av_mallocz(sizeof(*avctx->internal->pool));
413 if (!avctx->internal->pool) {
414 ret = AVERROR(ENOMEM);
418 avctx->internal->to_free = av_frame_alloc();
419 if (!avctx->internal->to_free) {
420 ret = AVERROR(ENOMEM);
424 avctx->internal->buffer_frame = av_frame_alloc();
425 if (!avctx->internal->buffer_frame) {
426 ret = AVERROR(ENOMEM);
430 avctx->internal->buffer_pkt = av_packet_alloc();
431 if (!avctx->internal->buffer_pkt) {
432 ret = AVERROR(ENOMEM);
436 if (codec->priv_data_size > 0) {
437 if (!avctx->priv_data) {
438 avctx->priv_data = av_mallocz(codec->priv_data_size);
439 if (!avctx->priv_data) {
440 ret = AVERROR(ENOMEM);
443 if (codec->priv_class) {
444 *(const AVClass **)avctx->priv_data = codec->priv_class;
445 av_opt_set_defaults(avctx->priv_data);
448 if (codec->priv_class && (ret = av_opt_set_dict(avctx->priv_data, &tmp)) < 0)
451 avctx->priv_data = NULL;
453 if ((ret = av_opt_set_dict(avctx, &tmp)) < 0)
456 if (avctx->coded_width && avctx->coded_height && !avctx->width && !avctx->height)
457 ret = ff_set_dimensions(avctx, avctx->coded_width, avctx->coded_height);
458 else if (avctx->width && avctx->height)
459 ret = ff_set_dimensions(avctx, avctx->width, avctx->height);
463 if ((avctx->coded_width || avctx->coded_height || avctx->width || avctx->height)
464 && ( av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx) < 0
465 || av_image_check_size(avctx->width, avctx->height, 0, avctx) < 0)) {
466 av_log(avctx, AV_LOG_WARNING, "ignoring invalid width/height values\n");
467 ff_set_dimensions(avctx, 0, 0);
470 if (avctx->width > 0 && avctx->height > 0) {
471 if (av_image_check_sar(avctx->width, avctx->height,
472 avctx->sample_aspect_ratio) < 0) {
473 av_log(avctx, AV_LOG_WARNING, "ignoring invalid SAR: %u/%u\n",
474 avctx->sample_aspect_ratio.num,
475 avctx->sample_aspect_ratio.den);
476 avctx->sample_aspect_ratio = (AVRational){ 0, 1 };
480 /* if the decoder init function was already called previously,
481 * free the already allocated subtitle_header before overwriting it */
482 if (av_codec_is_decoder(codec))
483 av_freep(&avctx->subtitle_header);
485 if (avctx->channels > FF_SANE_NB_CHANNELS) {
486 ret = AVERROR(EINVAL);
490 avctx->codec = codec;
491 if ((avctx->codec_type == AVMEDIA_TYPE_UNKNOWN || avctx->codec_type == codec->type) &&
492 avctx->codec_id == AV_CODEC_ID_NONE) {
493 avctx->codec_type = codec->type;
494 avctx->codec_id = codec->id;
496 if (avctx->codec_id != codec->id || (avctx->codec_type != codec->type
497 && avctx->codec_type != AVMEDIA_TYPE_ATTACHMENT)) {
498 av_log(avctx, AV_LOG_ERROR, "codec type or id mismatches\n");
499 ret = AVERROR(EINVAL);
502 avctx->frame_number = 0;
504 if ((avctx->codec->capabilities & AV_CODEC_CAP_EXPERIMENTAL) &&
505 avctx->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
506 ret = AVERROR_EXPERIMENTAL;
510 if (avctx->codec_type == AVMEDIA_TYPE_AUDIO &&
511 (!avctx->time_base.num || !avctx->time_base.den)) {
512 avctx->time_base.num = 1;
513 avctx->time_base.den = avctx->sample_rate;
517 ret = ff_thread_init(avctx);
522 if (!HAVE_THREADS && !(codec->capabilities & AV_CODEC_CAP_AUTO_THREADS))
523 avctx->thread_count = 1;
525 if (av_codec_is_encoder(avctx->codec)) {
527 #if FF_API_CODED_FRAME
528 FF_DISABLE_DEPRECATION_WARNINGS
529 avctx->coded_frame = av_frame_alloc();
530 if (!avctx->coded_frame) {
531 ret = AVERROR(ENOMEM);
534 FF_ENABLE_DEPRECATION_WARNINGS
537 if (avctx->time_base.num <= 0 || avctx->time_base.den <= 0) {
538 av_log(avctx, AV_LOG_ERROR, "The encoder timebase is not set.\n");
539 ret = AVERROR(EINVAL);
543 if (avctx->codec->sample_fmts) {
544 for (i = 0; avctx->codec->sample_fmts[i] != AV_SAMPLE_FMT_NONE; i++) {
545 if (avctx->sample_fmt == avctx->codec->sample_fmts[i])
547 if (avctx->channels == 1 &&
548 av_get_planar_sample_fmt(avctx->sample_fmt) ==
549 av_get_planar_sample_fmt(avctx->codec->sample_fmts[i])) {
550 avctx->sample_fmt = avctx->codec->sample_fmts[i];
554 if (avctx->codec->sample_fmts[i] == AV_SAMPLE_FMT_NONE) {
555 av_log(avctx, AV_LOG_ERROR, "Specified sample_fmt is not supported.\n");
556 ret = AVERROR(EINVAL);
560 if (avctx->codec->pix_fmts) {
561 for (i = 0; avctx->codec->pix_fmts[i] != AV_PIX_FMT_NONE; i++)
562 if (avctx->pix_fmt == avctx->codec->pix_fmts[i])
564 if (avctx->codec->pix_fmts[i] == AV_PIX_FMT_NONE) {
565 av_log(avctx, AV_LOG_ERROR, "Specified pix_fmt is not supported\n");
566 ret = AVERROR(EINVAL);
569 if (avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ420P ||
570 avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ422P ||
571 avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ440P ||
572 avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ444P)
573 avctx->color_range = AVCOL_RANGE_JPEG;
575 if (avctx->codec->supported_samplerates) {
576 for (i = 0; avctx->codec->supported_samplerates[i] != 0; i++)
577 if (avctx->sample_rate == avctx->codec->supported_samplerates[i])
579 if (avctx->codec->supported_samplerates[i] == 0) {
580 av_log(avctx, AV_LOG_ERROR, "Specified sample_rate is not supported\n");
581 ret = AVERROR(EINVAL);
585 if (avctx->codec->channel_layouts) {
586 if (!avctx->channel_layout) {
587 av_log(avctx, AV_LOG_WARNING, "channel_layout not specified\n");
589 for (i = 0; avctx->codec->channel_layouts[i] != 0; i++)
590 if (avctx->channel_layout == avctx->codec->channel_layouts[i])
592 if (avctx->codec->channel_layouts[i] == 0) {
593 av_log(avctx, AV_LOG_ERROR, "Specified channel_layout is not supported\n");
594 ret = AVERROR(EINVAL);
599 if (avctx->channel_layout && avctx->channels) {
600 if (av_get_channel_layout_nb_channels(avctx->channel_layout) != avctx->channels) {
601 av_log(avctx, AV_LOG_ERROR, "channel layout does not match number of channels\n");
602 ret = AVERROR(EINVAL);
605 } else if (avctx->channel_layout) {
606 avctx->channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
609 if (!avctx->rc_initial_buffer_occupancy)
610 avctx->rc_initial_buffer_occupancy = avctx->rc_buffer_size * 3 / 4;
612 if (avctx->ticks_per_frame &&
613 avctx->ticks_per_frame > INT_MAX / avctx->time_base.num) {
614 av_log(avctx, AV_LOG_ERROR,
615 "ticks_per_frame %d too large for the timebase %d/%d.",
616 avctx->ticks_per_frame,
617 avctx->time_base.num,
618 avctx->time_base.den);
622 if (avctx->hw_frames_ctx) {
623 AVHWFramesContext *frames_ctx = (AVHWFramesContext*)avctx->hw_frames_ctx->data;
624 if (frames_ctx->format != avctx->pix_fmt) {
625 av_log(avctx, AV_LOG_ERROR,
626 "Mismatching AVCodecContext.pix_fmt and AVHWFramesContext.format\n");
627 ret = AVERROR(EINVAL);
630 if (avctx->sw_pix_fmt != AV_PIX_FMT_NONE &&
631 avctx->sw_pix_fmt != frames_ctx->sw_format) {
632 av_log(avctx, AV_LOG_ERROR,
633 "Mismatching AVCodecContext.sw_pix_fmt (%s) "
634 "and AVHWFramesContext.sw_format (%s)\n",
635 av_get_pix_fmt_name(avctx->sw_pix_fmt),
636 av_get_pix_fmt_name(frames_ctx->sw_format));
637 ret = AVERROR(EINVAL);
640 avctx->sw_pix_fmt = frames_ctx->sw_format;
644 if (avctx->codec->init && !(avctx->active_thread_type & FF_THREAD_FRAME)) {
645 ret = avctx->codec->init(avctx);
651 #if FF_API_AUDIOENC_DELAY
652 if (av_codec_is_encoder(avctx->codec))
653 avctx->delay = avctx->initial_padding;
656 if (av_codec_is_decoder(avctx->codec)) {
657 /* validate channel layout from the decoder */
658 if (avctx->channel_layout) {
659 int channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
660 if (!avctx->channels)
661 avctx->channels = channels;
662 else if (channels != avctx->channels) {
663 av_log(avctx, AV_LOG_WARNING,
664 "channel layout does not match number of channels\n");
665 avctx->channel_layout = 0;
668 if (avctx->channels && avctx->channels < 0 ||
669 avctx->channels > FF_SANE_NB_CHANNELS) {
670 ret = AVERROR(EINVAL);
674 #if FF_API_AVCTX_TIMEBASE
675 if (avctx->framerate.num > 0 && avctx->framerate.den > 0)
676 avctx->time_base = av_inv_q(avctx->framerate);
680 if (!(codec->caps_internal & FF_CODEC_CAP_INIT_THREADSAFE) && codec->init) {
681 entangled_thread_counter--;
683 /* Release any user-supplied mutex. */
685 (*lockmgr_cb)(&codec_mutex, AV_LOCK_RELEASE);
690 av_dict_free(options);
697 (avctx->codec->caps_internal & FF_CODEC_CAP_INIT_CLEANUP))
698 avctx->codec->close(avctx);
700 if (avctx->priv_data && avctx->codec && avctx->codec->priv_class)
701 av_opt_free(avctx->priv_data);
704 #if FF_API_CODED_FRAME
705 FF_DISABLE_DEPRECATION_WARNINGS
706 av_frame_free(&avctx->coded_frame);
707 FF_ENABLE_DEPRECATION_WARNINGS
711 av_freep(&avctx->priv_data);
712 if (avctx->internal) {
713 av_frame_free(&avctx->internal->to_free);
714 av_frame_free(&avctx->internal->buffer_frame);
715 av_packet_free(&avctx->internal->buffer_pkt);
716 av_freep(&avctx->internal->pool);
718 av_freep(&avctx->internal);
723 void avsubtitle_free(AVSubtitle *sub)
727 for (i = 0; i < sub->num_rects; i++) {
728 av_freep(&sub->rects[i]->data[0]);
729 av_freep(&sub->rects[i]->data[1]);
730 av_freep(&sub->rects[i]->data[2]);
731 av_freep(&sub->rects[i]->data[3]);
732 av_freep(&sub->rects[i]->text);
733 av_freep(&sub->rects[i]->ass);
734 av_freep(&sub->rects[i]);
737 av_freep(&sub->rects);
739 memset(sub, 0, sizeof(AVSubtitle));
742 av_cold int avcodec_close(AVCodecContext *avctx)
746 if (avcodec_is_open(avctx)) {
747 FramePool *pool = avctx->internal->pool;
749 if (HAVE_THREADS && avctx->internal->thread_ctx)
750 ff_thread_free(avctx);
751 if (avctx->codec && avctx->codec->close)
752 avctx->codec->close(avctx);
753 av_frame_free(&avctx->internal->to_free);
754 av_frame_free(&avctx->internal->buffer_frame);
755 av_packet_free(&avctx->internal->buffer_pkt);
756 for (i = 0; i < FF_ARRAY_ELEMS(pool->pools); i++)
757 av_buffer_pool_uninit(&pool->pools[i]);
758 av_freep(&avctx->internal->pool);
760 if (avctx->hwaccel && avctx->hwaccel->uninit)
761 avctx->hwaccel->uninit(avctx);
762 av_freep(&avctx->internal->hwaccel_priv_data);
764 av_freep(&avctx->internal);
767 for (i = 0; i < avctx->nb_coded_side_data; i++)
768 av_freep(&avctx->coded_side_data[i].data);
769 av_freep(&avctx->coded_side_data);
770 avctx->nb_coded_side_data = 0;
772 av_buffer_unref(&avctx->hw_frames_ctx);
774 if (avctx->priv_data && avctx->codec && avctx->codec->priv_class)
775 av_opt_free(avctx->priv_data);
777 av_freep(&avctx->priv_data);
778 if (av_codec_is_encoder(avctx->codec)) {
779 av_freep(&avctx->extradata);
780 #if FF_API_CODED_FRAME
781 FF_DISABLE_DEPRECATION_WARNINGS
782 av_frame_free(&avctx->coded_frame);
783 FF_ENABLE_DEPRECATION_WARNINGS
787 avctx->active_thread_type = 0;
792 static AVCodec *find_encdec(enum AVCodecID id, int encoder)
794 AVCodec *p, *experimental = NULL;
797 if ((encoder ? av_codec_is_encoder(p) : av_codec_is_decoder(p)) &&
799 if (p->capabilities & AV_CODEC_CAP_EXPERIMENTAL && !experimental) {
809 AVCodec *avcodec_find_encoder(enum AVCodecID id)
811 return find_encdec(id, 1);
814 AVCodec *avcodec_find_encoder_by_name(const char *name)
821 if (av_codec_is_encoder(p) && strcmp(name, p->name) == 0)
828 AVCodec *avcodec_find_decoder(enum AVCodecID id)
830 return find_encdec(id, 0);
833 AVCodec *avcodec_find_decoder_by_name(const char *name)
840 if (av_codec_is_decoder(p) && strcmp(name, p->name) == 0)
847 static int get_bit_rate(AVCodecContext *ctx)
852 switch (ctx->codec_type) {
853 case AVMEDIA_TYPE_VIDEO:
854 case AVMEDIA_TYPE_DATA:
855 case AVMEDIA_TYPE_SUBTITLE:
856 case AVMEDIA_TYPE_ATTACHMENT:
857 bit_rate = ctx->bit_rate;
859 case AVMEDIA_TYPE_AUDIO:
860 bits_per_sample = av_get_bits_per_sample(ctx->codec_id);
861 bit_rate = bits_per_sample ? ctx->sample_rate * ctx->channels * bits_per_sample : ctx->bit_rate;
870 size_t av_get_codec_tag_string(char *buf, size_t buf_size, unsigned int codec_tag)
874 #define TAG_PRINT(x) \
875 (((x) >= '0' && (x) <= '9') || \
876 ((x) >= 'a' && (x) <= 'z') || ((x) >= 'A' && (x) <= 'Z') || \
877 ((x) == '.' || (x) == ' '))
879 for (i = 0; i < 4; i++) {
880 len = snprintf(buf, buf_size,
881 TAG_PRINT(codec_tag & 0xFF) ? "%c" : "[%d]", codec_tag & 0xFF);
883 buf_size = buf_size > len ? buf_size - len : 0;
890 void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)
892 const char *codec_name;
893 const char *profile = NULL;
897 AVRational display_aspect_ratio;
898 const AVCodecDescriptor *desc = avcodec_descriptor_get(enc->codec_id);
901 codec_name = desc->name;
902 profile = avcodec_profile_name(enc->codec_id, enc->profile);
903 } else if (enc->codec_id == AV_CODEC_ID_MPEG2TS) {
904 /* fake mpeg2 transport stream codec (currently not
906 codec_name = "mpeg2ts";
908 /* output avi tags */
910 av_get_codec_tag_string(tag_buf, sizeof(tag_buf), enc->codec_tag);
911 snprintf(buf1, sizeof(buf1), "%s / 0x%04X", tag_buf, enc->codec_tag);
915 switch (enc->codec_type) {
916 case AVMEDIA_TYPE_VIDEO:
917 snprintf(buf, buf_size,
919 codec_name, enc->mb_decision ? " (hq)" : "");
921 snprintf(buf + strlen(buf), buf_size - strlen(buf),
923 if (enc->codec_tag) {
925 av_get_codec_tag_string(tag_buf, sizeof(tag_buf), enc->codec_tag);
926 snprintf(buf + strlen(buf), buf_size - strlen(buf),
927 " [%s / 0x%04X]", tag_buf, enc->codec_tag);
930 av_strlcat(buf, "\n ", buf_size);
931 snprintf(buf + strlen(buf), buf_size - strlen(buf),
932 "%s", enc->pix_fmt == AV_PIX_FMT_NONE ? "none" :
933 av_get_pix_fmt_name(enc->pix_fmt));
935 if (enc->color_range != AVCOL_RANGE_UNSPECIFIED)
936 snprintf(buf + strlen(buf), buf_size - strlen(buf), ", %s",
937 av_color_range_name(enc->color_range));
938 if (enc->colorspace != AVCOL_SPC_UNSPECIFIED ||
939 enc->color_primaries != AVCOL_PRI_UNSPECIFIED ||
940 enc->color_trc != AVCOL_TRC_UNSPECIFIED) {
942 snprintf(buf + strlen(buf), buf_size - strlen(buf), ", %s/%s/%s",
943 av_color_space_name(enc->colorspace),
944 av_color_primaries_name(enc->color_primaries),
945 av_color_transfer_name(enc->color_trc));
947 if (av_log_get_level() >= AV_LOG_DEBUG &&
948 enc->chroma_sample_location != AVCHROMA_LOC_UNSPECIFIED)
949 snprintf(buf + strlen(buf), buf_size - strlen(buf), ", %s",
950 av_chroma_location_name(enc->chroma_sample_location));
953 av_strlcat(buf, new_line ? "\n " : ", ", buf_size);
955 snprintf(buf + strlen(buf), buf_size - strlen(buf),
957 enc->width, enc->height);
959 if (av_log_get_level() >= AV_LOG_VERBOSE &&
960 (enc->width != enc->coded_width ||
961 enc->height != enc->coded_height))
962 snprintf(buf + strlen(buf), buf_size - strlen(buf),
963 " (%dx%d)", enc->coded_width, enc->coded_height);
965 if (enc->sample_aspect_ratio.num) {
966 av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
967 enc->width * enc->sample_aspect_ratio.num,
968 enc->height * enc->sample_aspect_ratio.den,
970 snprintf(buf + strlen(buf), buf_size - strlen(buf),
971 " [PAR %d:%d DAR %d:%d]",
972 enc->sample_aspect_ratio.num, enc->sample_aspect_ratio.den,
973 display_aspect_ratio.num, display_aspect_ratio.den);
975 if (av_log_get_level() >= AV_LOG_DEBUG) {
976 int g = av_gcd(enc->time_base.num, enc->time_base.den);
977 snprintf(buf + strlen(buf), buf_size - strlen(buf),
979 enc->time_base.num / g, enc->time_base.den / g);
983 snprintf(buf + strlen(buf), buf_size - strlen(buf),
984 ", q=%d-%d", enc->qmin, enc->qmax);
987 case AVMEDIA_TYPE_AUDIO:
988 snprintf(buf, buf_size,
992 snprintf(buf + strlen(buf), buf_size - strlen(buf),
994 if (enc->codec_tag) {
996 av_get_codec_tag_string(tag_buf, sizeof(tag_buf), enc->codec_tag);
997 snprintf(buf + strlen(buf), buf_size - strlen(buf),
998 " [%s / 0x%04X]", tag_buf, enc->codec_tag);
1001 av_strlcat(buf, "\n ", buf_size);
1002 if (enc->sample_rate) {
1003 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1004 "%d Hz, ", enc->sample_rate);
1006 av_get_channel_layout_string(buf + strlen(buf), buf_size - strlen(buf), enc->channels, enc->channel_layout);
1007 if (enc->sample_fmt != AV_SAMPLE_FMT_NONE) {
1008 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1009 ", %s", av_get_sample_fmt_name(enc->sample_fmt));
1012 case AVMEDIA_TYPE_DATA:
1013 snprintf(buf, buf_size, "Data: %s", codec_name);
1015 case AVMEDIA_TYPE_SUBTITLE:
1016 snprintf(buf, buf_size, "Subtitle: %s", codec_name);
1018 case AVMEDIA_TYPE_ATTACHMENT:
1019 snprintf(buf, buf_size, "Attachment: %s", codec_name);
1022 snprintf(buf, buf_size, "Invalid Codec type %d", enc->codec_type);
1026 if (enc->flags & AV_CODEC_FLAG_PASS1)
1027 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1029 if (enc->flags & AV_CODEC_FLAG_PASS2)
1030 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1033 bitrate = get_bit_rate(enc);
1035 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1036 ", %d kb/s", bitrate / 1000);
1040 const char *av_get_profile_name(const AVCodec *codec, int profile)
1043 if (profile == FF_PROFILE_UNKNOWN || !codec->profiles)
1046 for (p = codec->profiles; p->profile != FF_PROFILE_UNKNOWN; p++)
1047 if (p->profile == profile)
1053 const char *avcodec_profile_name(enum AVCodecID codec_id, int profile)
1055 const AVCodecDescriptor *desc = avcodec_descriptor_get(codec_id);
1058 if (profile == FF_PROFILE_UNKNOWN || !desc || !desc->profiles)
1061 for (p = desc->profiles; p->profile != FF_PROFILE_UNKNOWN; p++)
1062 if (p->profile == profile)
1068 unsigned avcodec_version(void)
1070 return LIBAVCODEC_VERSION_INT;
1073 const char *avcodec_configuration(void)
1075 return LIBAV_CONFIGURATION;
1078 const char *avcodec_license(void)
1080 #define LICENSE_PREFIX "libavcodec license: "
1081 return LICENSE_PREFIX LIBAV_LICENSE + sizeof(LICENSE_PREFIX) - 1;
1084 int av_get_exact_bits_per_sample(enum AVCodecID codec_id)
1087 case AV_CODEC_ID_ADPCM_CT:
1088 case AV_CODEC_ID_ADPCM_IMA_APC:
1089 case AV_CODEC_ID_ADPCM_IMA_EA_SEAD:
1090 case AV_CODEC_ID_ADPCM_IMA_WS:
1091 case AV_CODEC_ID_ADPCM_G722:
1092 case AV_CODEC_ID_ADPCM_YAMAHA:
1094 case AV_CODEC_ID_PCM_ALAW:
1095 case AV_CODEC_ID_PCM_MULAW:
1096 case AV_CODEC_ID_PCM_S8:
1097 case AV_CODEC_ID_PCM_U8:
1098 case AV_CODEC_ID_PCM_ZORK:
1100 case AV_CODEC_ID_PCM_S16BE:
1101 case AV_CODEC_ID_PCM_S16BE_PLANAR:
1102 case AV_CODEC_ID_PCM_S16LE:
1103 case AV_CODEC_ID_PCM_S16LE_PLANAR:
1104 case AV_CODEC_ID_PCM_U16BE:
1105 case AV_CODEC_ID_PCM_U16LE:
1107 case AV_CODEC_ID_PCM_S24DAUD:
1108 case AV_CODEC_ID_PCM_S24BE:
1109 case AV_CODEC_ID_PCM_S24LE:
1110 case AV_CODEC_ID_PCM_S24LE_PLANAR:
1111 case AV_CODEC_ID_PCM_U24BE:
1112 case AV_CODEC_ID_PCM_U24LE:
1114 case AV_CODEC_ID_PCM_S32BE:
1115 case AV_CODEC_ID_PCM_S32LE:
1116 case AV_CODEC_ID_PCM_S32LE_PLANAR:
1117 case AV_CODEC_ID_PCM_U32BE:
1118 case AV_CODEC_ID_PCM_U32LE:
1119 case AV_CODEC_ID_PCM_F32BE:
1120 case AV_CODEC_ID_PCM_F32LE:
1122 case AV_CODEC_ID_PCM_F64BE:
1123 case AV_CODEC_ID_PCM_F64LE:
1130 int av_get_bits_per_sample(enum AVCodecID codec_id)
1133 case AV_CODEC_ID_ADPCM_SBPRO_2:
1135 case AV_CODEC_ID_ADPCM_SBPRO_3:
1137 case AV_CODEC_ID_ADPCM_SBPRO_4:
1138 case AV_CODEC_ID_ADPCM_IMA_WAV:
1139 case AV_CODEC_ID_ADPCM_IMA_QT:
1140 case AV_CODEC_ID_ADPCM_SWF:
1141 case AV_CODEC_ID_ADPCM_MS:
1144 return av_get_exact_bits_per_sample(codec_id);
1148 static int get_audio_frame_duration(enum AVCodecID id, int sr, int ch, int ba,
1149 uint32_t tag, int bits_per_coded_sample, int frame_bytes)
1151 int bps = av_get_exact_bits_per_sample(id);
1153 /* codecs with an exact constant bits per sample */
1154 if (bps > 0 && ch > 0 && frame_bytes > 0)
1155 return (frame_bytes * 8) / (bps * ch);
1156 bps = bits_per_coded_sample;
1158 /* codecs with a fixed packet duration */
1160 case AV_CODEC_ID_ADPCM_ADX: return 32;
1161 case AV_CODEC_ID_ADPCM_IMA_QT: return 64;
1162 case AV_CODEC_ID_ADPCM_EA_XAS: return 128;
1163 case AV_CODEC_ID_AMR_NB:
1164 case AV_CODEC_ID_GSM:
1165 case AV_CODEC_ID_QCELP:
1166 case AV_CODEC_ID_RA_144:
1167 case AV_CODEC_ID_RA_288: return 160;
1168 case AV_CODEC_ID_IMC: return 256;
1169 case AV_CODEC_ID_AMR_WB:
1170 case AV_CODEC_ID_GSM_MS: return 320;
1171 case AV_CODEC_ID_MP1: return 384;
1172 case AV_CODEC_ID_ATRAC1: return 512;
1173 case AV_CODEC_ID_ATRAC3: return 1024;
1174 case AV_CODEC_ID_MP2:
1175 case AV_CODEC_ID_MUSEPACK7: return 1152;
1176 case AV_CODEC_ID_AC3: return 1536;
1180 /* calc from sample rate */
1181 if (id == AV_CODEC_ID_TTA)
1182 return 256 * sr / 245;
1185 /* calc from sample rate and channels */
1186 if (id == AV_CODEC_ID_BINKAUDIO_DCT)
1187 return (480 << (sr / 22050)) / ch;
1190 if (id == AV_CODEC_ID_MP3)
1191 return sr <= 24000 ? 576 : 1152;
1195 /* calc from block_align */
1196 if (id == AV_CODEC_ID_SIPR) {
1198 case 20: return 160;
1199 case 19: return 144;
1200 case 29: return 288;
1201 case 37: return 480;
1203 } else if (id == AV_CODEC_ID_ILBC) {
1205 case 38: return 160;
1206 case 50: return 240;
1211 if (frame_bytes > 0) {
1212 /* calc from frame_bytes only */
1213 if (id == AV_CODEC_ID_TRUESPEECH)
1214 return 240 * (frame_bytes / 32);
1215 if (id == AV_CODEC_ID_NELLYMOSER)
1216 return 256 * (frame_bytes / 64);
1219 /* calc from frame_bytes and bits_per_coded_sample */
1220 if (id == AV_CODEC_ID_ADPCM_G726)
1221 return frame_bytes * 8 / bps;
1225 /* calc from frame_bytes and channels */
1227 case AV_CODEC_ID_ADPCM_4XM:
1228 case AV_CODEC_ID_ADPCM_IMA_ISS:
1229 return (frame_bytes - 4 * ch) * 2 / ch;
1230 case AV_CODEC_ID_ADPCM_IMA_SMJPEG:
1231 return (frame_bytes - 4) * 2 / ch;
1232 case AV_CODEC_ID_ADPCM_IMA_AMV:
1233 return (frame_bytes - 8) * 2 / ch;
1234 case AV_CODEC_ID_ADPCM_XA:
1235 return (frame_bytes / 128) * 224 / ch;
1236 case AV_CODEC_ID_INTERPLAY_DPCM:
1237 return (frame_bytes - 6 - ch) / ch;
1238 case AV_CODEC_ID_ROQ_DPCM:
1239 return (frame_bytes - 8) / ch;
1240 case AV_CODEC_ID_XAN_DPCM:
1241 return (frame_bytes - 2 * ch) / ch;
1242 case AV_CODEC_ID_MACE3:
1243 return 3 * frame_bytes / ch;
1244 case AV_CODEC_ID_MACE6:
1245 return 6 * frame_bytes / ch;
1246 case AV_CODEC_ID_PCM_LXF:
1247 return 2 * (frame_bytes / (5 * ch));
1251 /* calc from frame_bytes, channels, and codec_tag */
1252 if (id == AV_CODEC_ID_SOL_DPCM) {
1254 return frame_bytes / ch;
1256 return frame_bytes * 2 / ch;
1261 /* calc from frame_bytes, channels, and block_align */
1262 int blocks = frame_bytes / ba;
1264 case AV_CODEC_ID_ADPCM_IMA_WAV:
1265 return blocks * (1 + (ba - 4 * ch) / (4 * ch) * 8);
1266 case AV_CODEC_ID_ADPCM_IMA_DK3:
1267 return blocks * (((ba - 16) * 2 / 3 * 4) / ch);
1268 case AV_CODEC_ID_ADPCM_IMA_DK4:
1269 return blocks * (1 + (ba - 4 * ch) * 2 / ch);
1270 case AV_CODEC_ID_ADPCM_MS:
1271 return blocks * (2 + (ba - 7 * ch) * 2 / ch);
1276 /* calc from frame_bytes, channels, and bits_per_coded_sample */
1278 case AV_CODEC_ID_PCM_DVD:
1279 return 2 * (frame_bytes / ((bps * 2 / 8) * ch));
1280 case AV_CODEC_ID_PCM_BLURAY:
1281 return frame_bytes / ((FFALIGN(ch, 2) * bps) / 8);
1282 case AV_CODEC_ID_S302M:
1283 return 2 * (frame_bytes / ((bps + 4) / 4)) / ch;
1292 int av_get_audio_frame_duration(AVCodecContext *avctx, int frame_bytes)
1294 return get_audio_frame_duration(avctx->codec_id, avctx->sample_rate,
1295 avctx->channels, avctx->block_align,
1296 avctx->codec_tag, avctx->bits_per_coded_sample,
1300 int av_get_audio_frame_duration2(AVCodecParameters *par, int frame_bytes)
1302 return get_audio_frame_duration(par->codec_id, par->sample_rate,
1303 par->channels, par->block_align,
1304 par->codec_tag, par->bits_per_coded_sample,
1309 int ff_thread_init(AVCodecContext *s)
1316 unsigned int av_xiphlacing(unsigned char *s, unsigned int v)
1330 int ff_match_2uint16(const uint16_t(*tab)[2], int size, int a, int b)
1333 for (i = 0; i < size && !(tab[i][0] == a && tab[i][1] == b); i++) ;
1337 #if FF_API_MISSING_SAMPLE
1338 FF_DISABLE_DEPRECATION_WARNINGS
1339 void av_log_missing_feature(void *avc, const char *feature, int want_sample)
1341 av_log(avc, AV_LOG_WARNING, "%s is not implemented. Update your Libav "
1342 "version to the newest one from Git. If the problem still "
1343 "occurs, it means that your file has a feature which has not "
1344 "been implemented.\n", feature);
1346 av_log_ask_for_sample(avc, NULL);
1349 void av_log_ask_for_sample(void *avc, const char *msg, ...)
1351 va_list argument_list;
1353 va_start(argument_list, msg);
1356 av_vlog(avc, AV_LOG_WARNING, msg, argument_list);
1357 av_log(avc, AV_LOG_WARNING, "If you want to help, upload a sample "
1358 "of this file to ftp://upload.libav.org/incoming/ "
1359 "and contact the libav-devel mailing list.\n");
1361 va_end(argument_list);
1363 FF_ENABLE_DEPRECATION_WARNINGS
1364 #endif /* FF_API_MISSING_SAMPLE */
1366 static AVHWAccel *first_hwaccel = NULL;
1368 void av_register_hwaccel(AVHWAccel *hwaccel)
1370 AVHWAccel **p = &first_hwaccel;
1374 hwaccel->next = NULL;
1377 AVHWAccel *av_hwaccel_next(const AVHWAccel *hwaccel)
1379 return hwaccel ? hwaccel->next : first_hwaccel;
1382 int av_lockmgr_register(int (*cb)(void **mutex, enum AVLockOp op))
1385 // There is no good way to rollback a failure to destroy the
1386 // mutex, so we ignore failures.
1387 lockmgr_cb(&codec_mutex, AV_LOCK_DESTROY);
1388 lockmgr_cb(&avformat_mutex, AV_LOCK_DESTROY);
1391 avformat_mutex = NULL;
1395 void *new_codec_mutex = NULL;
1396 void *new_avformat_mutex = NULL;
1398 if (err = cb(&new_codec_mutex, AV_LOCK_CREATE)) {
1399 return err > 0 ? AVERROR_UNKNOWN : err;
1401 if (err = cb(&new_avformat_mutex, AV_LOCK_CREATE)) {
1402 // Ignore failures to destroy the newly created mutex.
1403 cb(&new_codec_mutex, AV_LOCK_DESTROY);
1404 return err > 0 ? AVERROR_UNKNOWN : err;
1407 codec_mutex = new_codec_mutex;
1408 avformat_mutex = new_avformat_mutex;
1414 int avpriv_lock_avformat(void)
1417 if ((*lockmgr_cb)(&avformat_mutex, AV_LOCK_OBTAIN))
1423 int avpriv_unlock_avformat(void)
1426 if ((*lockmgr_cb)(&avformat_mutex, AV_LOCK_RELEASE))
1432 unsigned int avpriv_toupper4(unsigned int x)
1434 return av_toupper(x & 0xFF) +
1435 (av_toupper((x >> 8) & 0xFF) << 8) +
1436 (av_toupper((x >> 16) & 0xFF) << 16) +
1437 (av_toupper((x >> 24) & 0xFF) << 24);
1440 int ff_thread_ref_frame(ThreadFrame *dst, ThreadFrame *src)
1444 dst->owner = src->owner;
1446 ret = av_frame_ref(dst->f, src->f);
1450 if (src->progress &&
1451 !(dst->progress = av_buffer_ref(src->progress))) {
1452 ff_thread_release_buffer(dst->owner, dst);
1453 return AVERROR(ENOMEM);
1461 int ff_thread_get_buffer(AVCodecContext *avctx, ThreadFrame *f, int flags)
1464 return ff_get_buffer(avctx, f->f, flags);
1467 void ff_thread_release_buffer(AVCodecContext *avctx, ThreadFrame *f)
1470 av_frame_unref(f->f);
1473 void ff_thread_finish_setup(AVCodecContext *avctx)
1477 void ff_thread_report_progress(ThreadFrame *f, int progress, int field)
1481 void ff_thread_await_progress(ThreadFrame *f, int progress, int field)
1487 int avcodec_is_open(AVCodecContext *s)
1489 return !!s->internal;
1492 const uint8_t *avpriv_find_start_code(const uint8_t *restrict p,
1494 uint32_t * restrict state)
1502 for (i = 0; i < 3; i++) {
1503 uint32_t tmp = *state << 8;
1504 *state = tmp + *(p++);
1505 if (tmp == 0x100 || p == end)
1510 if (p[-1] > 1 ) p += 3;
1511 else if (p[-2] ) p += 2;
1512 else if (p[-3]|(p[-1]-1)) p++;
1519 p = FFMIN(p, end) - 4;
1520 *state = AV_RB32(p);
1525 AVCPBProperties *av_cpb_properties_alloc(size_t *size)
1527 AVCPBProperties *props = av_mallocz(sizeof(AVCPBProperties));
1532 *size = sizeof(*props);
1534 props->vbv_delay = UINT64_MAX;
1539 AVCPBProperties *ff_add_cpb_side_data(AVCodecContext *avctx)
1541 AVPacketSideData *tmp;
1542 AVCPBProperties *props;
1545 props = av_cpb_properties_alloc(&size);
1549 tmp = av_realloc_array(avctx->coded_side_data, avctx->nb_coded_side_data + 1, sizeof(*tmp));
1555 avctx->coded_side_data = tmp;
1556 avctx->nb_coded_side_data++;
1558 avctx->coded_side_data[avctx->nb_coded_side_data - 1].type = AV_PKT_DATA_CPB_PROPERTIES;
1559 avctx->coded_side_data[avctx->nb_coded_side_data - 1].data = (uint8_t*)props;
1560 avctx->coded_side_data[avctx->nb_coded_side_data - 1].size = size;
1565 static void codec_parameters_reset(AVCodecParameters *par)
1567 av_freep(&par->extradata);
1569 memset(par, 0, sizeof(*par));
1571 par->codec_type = AVMEDIA_TYPE_UNKNOWN;
1572 par->codec_id = AV_CODEC_ID_NONE;
1574 par->field_order = AV_FIELD_UNKNOWN;
1575 par->color_range = AVCOL_RANGE_UNSPECIFIED;
1576 par->color_primaries = AVCOL_PRI_UNSPECIFIED;
1577 par->color_trc = AVCOL_TRC_UNSPECIFIED;
1578 par->color_space = AVCOL_SPC_UNSPECIFIED;
1579 par->chroma_location = AVCHROMA_LOC_UNSPECIFIED;
1580 par->sample_aspect_ratio = (AVRational){ 0, 1 };
1583 AVCodecParameters *avcodec_parameters_alloc(void)
1585 AVCodecParameters *par = av_mallocz(sizeof(*par));
1589 codec_parameters_reset(par);
1593 void avcodec_parameters_free(AVCodecParameters **ppar)
1595 AVCodecParameters *par = *ppar;
1599 codec_parameters_reset(par);
1604 int avcodec_parameters_copy(AVCodecParameters *dst, const AVCodecParameters *src)
1606 codec_parameters_reset(dst);
1607 memcpy(dst, src, sizeof(*dst));
1609 dst->extradata = NULL;
1610 dst->extradata_size = 0;
1611 if (src->extradata) {
1612 dst->extradata = av_mallocz(src->extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);
1613 if (!dst->extradata)
1614 return AVERROR(ENOMEM);
1615 memcpy(dst->extradata, src->extradata, src->extradata_size);
1616 dst->extradata_size = src->extradata_size;
1622 int avcodec_parameters_from_context(AVCodecParameters *par,
1623 const AVCodecContext *codec)
1625 codec_parameters_reset(par);
1627 par->codec_type = codec->codec_type;
1628 par->codec_id = codec->codec_id;
1629 par->codec_tag = codec->codec_tag;
1631 par->bit_rate = codec->bit_rate;
1632 par->bits_per_coded_sample = codec->bits_per_coded_sample;
1633 par->profile = codec->profile;
1634 par->level = codec->level;
1636 switch (par->codec_type) {
1637 case AVMEDIA_TYPE_VIDEO:
1638 par->format = codec->pix_fmt;
1639 par->width = codec->width;
1640 par->height = codec->height;
1641 par->field_order = codec->field_order;
1642 par->color_range = codec->color_range;
1643 par->color_primaries = codec->color_primaries;
1644 par->color_trc = codec->color_trc;
1645 par->color_space = codec->colorspace;
1646 par->chroma_location = codec->chroma_sample_location;
1647 par->sample_aspect_ratio = codec->sample_aspect_ratio;
1649 case AVMEDIA_TYPE_AUDIO:
1650 par->format = codec->sample_fmt;
1651 par->channel_layout = codec->channel_layout;
1652 par->channels = codec->channels;
1653 par->sample_rate = codec->sample_rate;
1654 par->block_align = codec->block_align;
1655 par->initial_padding = codec->initial_padding;
1659 if (codec->extradata) {
1660 par->extradata = av_mallocz(codec->extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);
1661 if (!par->extradata)
1662 return AVERROR(ENOMEM);
1663 memcpy(par->extradata, codec->extradata, codec->extradata_size);
1664 par->extradata_size = codec->extradata_size;
1670 int avcodec_parameters_to_context(AVCodecContext *codec,
1671 const AVCodecParameters *par)
1673 codec->codec_type = par->codec_type;
1674 codec->codec_id = par->codec_id;
1675 codec->codec_tag = par->codec_tag;
1677 codec->bit_rate = par->bit_rate;
1678 codec->bits_per_coded_sample = par->bits_per_coded_sample;
1679 codec->profile = par->profile;
1680 codec->level = par->level;
1682 switch (par->codec_type) {
1683 case AVMEDIA_TYPE_VIDEO:
1684 codec->pix_fmt = par->format;
1685 codec->width = par->width;
1686 codec->height = par->height;
1687 codec->field_order = par->field_order;
1688 codec->color_range = par->color_range;
1689 codec->color_primaries = par->color_primaries;
1690 codec->color_trc = par->color_trc;
1691 codec->colorspace = par->color_space;
1692 codec->chroma_sample_location = par->chroma_location;
1693 codec->sample_aspect_ratio = par->sample_aspect_ratio;
1695 case AVMEDIA_TYPE_AUDIO:
1696 codec->sample_fmt = par->format;
1697 codec->channel_layout = par->channel_layout;
1698 codec->channels = par->channels;
1699 codec->sample_rate = par->sample_rate;
1700 codec->block_align = par->block_align;
1701 codec->initial_padding = par->initial_padding;
1705 if (par->extradata) {
1706 av_freep(&codec->extradata);
1707 codec->extradata = av_mallocz(par->extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);
1708 if (!codec->extradata)
1709 return AVERROR(ENOMEM);
1710 memcpy(codec->extradata, par->extradata, par->extradata_size);
1711 codec->extradata_size = par->extradata_size;