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"
44 #include "libavutil/opt.h"
46 #include "mpegvideo.h"
49 #include "bytestream.h"
56 static int volatile entangled_thread_counter = 0;
57 static int (*lockmgr_cb)(void **mutex, enum AVLockOp op);
58 static void *codec_mutex;
59 static void *avformat_mutex;
61 void av_fast_padded_malloc(void *ptr, unsigned int *size, size_t min_size)
64 if (min_size > SIZE_MAX - AV_INPUT_BUFFER_PADDING_SIZE) {
69 av_fast_malloc(p, size, min_size + AV_INPUT_BUFFER_PADDING_SIZE);
71 memset((uint8_t *)*p + min_size, 0, AV_INPUT_BUFFER_PADDING_SIZE);
74 /* encoder management */
75 static AVCodec *first_avcodec = NULL;
77 AVCodec *av_codec_next(const AVCodec *c)
85 static av_cold void avcodec_init(void)
87 static int initialized = 0;
94 ff_me_cmp_init_static();
97 int av_codec_is_encoder(const AVCodec *codec)
99 return codec && (codec->encode_sub || codec->encode2 ||codec->send_frame);
102 int av_codec_is_decoder(const AVCodec *codec)
104 return codec && (codec->decode || codec->receive_frame);
107 av_cold void avcodec_register(AVCodec *codec)
117 if (codec->init_static_data)
118 codec->init_static_data(codec);
122 unsigned avcodec_get_edge_width(void)
128 int ff_set_dimensions(AVCodecContext *s, int width, int height)
130 int ret = av_image_check_size(width, height, 0, s);
134 s->width = s->coded_width = width;
135 s->height = s->coded_height = height;
140 int ff_set_sar(AVCodecContext *avctx, AVRational sar)
142 int ret = av_image_check_sar(avctx->width, avctx->height, sar);
145 av_log(avctx, AV_LOG_WARNING, "ignoring invalid SAR: %d/%d\n",
147 avctx->sample_aspect_ratio = (AVRational){ 0, 1 };
150 avctx->sample_aspect_ratio = sar;
155 int ff_side_data_update_matrix_encoding(AVFrame *frame,
156 enum AVMatrixEncoding matrix_encoding)
158 AVFrameSideData *side_data;
159 enum AVMatrixEncoding *data;
161 side_data = av_frame_get_side_data(frame, AV_FRAME_DATA_MATRIXENCODING);
163 side_data = av_frame_new_side_data(frame, AV_FRAME_DATA_MATRIXENCODING,
164 sizeof(enum AVMatrixEncoding));
167 return AVERROR(ENOMEM);
169 data = (enum AVMatrixEncoding*)side_data->data;
170 *data = matrix_encoding;
175 void avcodec_align_dimensions2(AVCodecContext *s, int *width, int *height,
176 int linesize_align[AV_NUM_DATA_POINTERS])
178 size_t max_align = av_cpu_max_align();
183 switch (s->pix_fmt) {
184 case AV_PIX_FMT_YUV420P:
185 case AV_PIX_FMT_YUYV422:
186 case AV_PIX_FMT_YVYU422:
187 case AV_PIX_FMT_UYVY422:
188 case AV_PIX_FMT_YUV422P:
189 case AV_PIX_FMT_YUV440P:
190 case AV_PIX_FMT_YUV444P:
191 case AV_PIX_FMT_GBRP:
192 case AV_PIX_FMT_GBRAP:
193 case AV_PIX_FMT_GRAY8:
194 case AV_PIX_FMT_GRAY16BE:
195 case AV_PIX_FMT_GRAY16LE:
196 case AV_PIX_FMT_YUVJ420P:
197 case AV_PIX_FMT_YUVJ422P:
198 case AV_PIX_FMT_YUVJ440P:
199 case AV_PIX_FMT_YUVJ444P:
200 case AV_PIX_FMT_YUVA420P:
201 case AV_PIX_FMT_YUVA422P:
202 case AV_PIX_FMT_YUVA444P:
203 case AV_PIX_FMT_YUV420P9LE:
204 case AV_PIX_FMT_YUV420P9BE:
205 case AV_PIX_FMT_YUV420P10LE:
206 case AV_PIX_FMT_YUV420P10BE:
207 case AV_PIX_FMT_YUV422P9LE:
208 case AV_PIX_FMT_YUV422P9BE:
209 case AV_PIX_FMT_YUV422P10LE:
210 case AV_PIX_FMT_YUV422P10BE:
211 case AV_PIX_FMT_YUVA422P10LE:
212 case AV_PIX_FMT_YUVA422P10BE:
213 case AV_PIX_FMT_YUV444P9LE:
214 case AV_PIX_FMT_YUV444P9BE:
215 case AV_PIX_FMT_YUV444P10LE:
216 case AV_PIX_FMT_YUV444P10BE:
217 case AV_PIX_FMT_YUVA444P10LE:
218 case AV_PIX_FMT_YUVA444P10BE:
219 case AV_PIX_FMT_GBRP9LE:
220 case AV_PIX_FMT_GBRP9BE:
221 case AV_PIX_FMT_GBRP10LE:
222 case AV_PIX_FMT_GBRP10BE:
223 case AV_PIX_FMT_GBRAP12LE:
224 case AV_PIX_FMT_GBRAP12BE:
225 w_align = 16; //FIXME assume 16 pixel per macroblock
226 h_align = 16 * 2; // interlaced needs 2 macroblocks height
228 case AV_PIX_FMT_YUV411P:
229 case AV_PIX_FMT_UYYVYY411:
233 case AV_PIX_FMT_YUV410P:
234 if (s->codec_id == AV_CODEC_ID_SVQ1) {
238 case AV_PIX_FMT_RGB555:
239 if (s->codec_id == AV_CODEC_ID_RPZA) {
243 case AV_PIX_FMT_PAL8:
244 case AV_PIX_FMT_BGR8:
245 case AV_PIX_FMT_RGB8:
246 if (s->codec_id == AV_CODEC_ID_SMC) {
251 case AV_PIX_FMT_BGR24:
252 if ((s->codec_id == AV_CODEC_ID_MSZH) ||
253 (s->codec_id == AV_CODEC_ID_ZLIB)) {
264 *width = FFALIGN(*width, w_align);
265 *height = FFALIGN(*height, h_align);
266 if (s->codec_id == AV_CODEC_ID_H264)
267 // some of the optimized chroma MC reads one line too much
270 for (i = 0; i < 4; i++)
271 linesize_align[i] = max_align;
274 void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height)
276 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(s->pix_fmt);
277 int chroma_shift = desc->log2_chroma_w;
278 int linesize_align[AV_NUM_DATA_POINTERS];
281 avcodec_align_dimensions2(s, width, height, linesize_align);
282 align = FFMAX(linesize_align[0], linesize_align[3]);
283 linesize_align[1] <<= chroma_shift;
284 linesize_align[2] <<= chroma_shift;
285 align = FFMAX3(align, linesize_align[1], linesize_align[2]);
286 *width = FFALIGN(*width, align);
289 int avcodec_fill_audio_frame(AVFrame *frame, int nb_channels,
290 enum AVSampleFormat sample_fmt, const uint8_t *buf,
291 int buf_size, int align)
293 int ch, planar, needed_size, ret = 0;
295 needed_size = av_samples_get_buffer_size(NULL, nb_channels,
296 frame->nb_samples, sample_fmt,
298 if (buf_size < needed_size)
299 return AVERROR(EINVAL);
301 planar = av_sample_fmt_is_planar(sample_fmt);
302 if (planar && nb_channels > AV_NUM_DATA_POINTERS) {
303 if (!(frame->extended_data = av_mallocz(nb_channels *
304 sizeof(*frame->extended_data))))
305 return AVERROR(ENOMEM);
307 frame->extended_data = frame->data;
310 if ((ret = av_samples_fill_arrays(frame->extended_data, &frame->linesize[0],
311 buf, nb_channels, frame->nb_samples,
312 sample_fmt, align)) < 0) {
313 if (frame->extended_data != frame->data)
314 av_free(frame->extended_data);
317 if (frame->extended_data != frame->data) {
318 for (ch = 0; ch < AV_NUM_DATA_POINTERS; ch++)
319 frame->data[ch] = frame->extended_data[ch];
325 int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2), void *arg, int *ret, int count, int size)
329 for (i = 0; i < count; i++) {
330 int r = func(c, (char *)arg + i * size);
337 int avcodec_default_execute2(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2, int jobnr, int threadnr), void *arg, int *ret, int count)
341 for (i = 0; i < count; i++) {
342 int r = func(c, arg, i, 0);
349 int attribute_align_arg avcodec_open2(AVCodecContext *avctx, const AVCodec *codec, AVDictionary **options)
352 AVDictionary *tmp = NULL;
354 if (avcodec_is_open(avctx))
357 if ((!codec && !avctx->codec)) {
358 av_log(avctx, AV_LOG_ERROR, "No codec provided to avcodec_open2().\n");
359 return AVERROR(EINVAL);
361 if ((codec && avctx->codec && codec != avctx->codec)) {
362 av_log(avctx, AV_LOG_ERROR, "This AVCodecContext was allocated for %s, "
363 "but %s passed to avcodec_open2().\n", avctx->codec->name, codec->name);
364 return AVERROR(EINVAL);
367 codec = avctx->codec;
369 if (avctx->extradata_size < 0 || avctx->extradata_size >= FF_MAX_EXTRADATA_SIZE)
370 return AVERROR(EINVAL);
373 av_dict_copy(&tmp, *options, 0);
375 /* If there is a user-supplied mutex locking routine, call it. */
376 if (!(codec->caps_internal & FF_CODEC_CAP_INIT_THREADSAFE) && codec->init) {
378 if ((*lockmgr_cb)(&codec_mutex, AV_LOCK_OBTAIN))
382 entangled_thread_counter++;
383 if (entangled_thread_counter != 1) {
384 av_log(avctx, AV_LOG_ERROR,
385 "Insufficient thread locking. At least %d threads are "
386 "calling avcodec_open2() at the same time right now.\n",
387 entangled_thread_counter);
393 avctx->internal = av_mallocz(sizeof(AVCodecInternal));
394 if (!avctx->internal) {
395 ret = AVERROR(ENOMEM);
399 avctx->internal->pool = av_mallocz(sizeof(*avctx->internal->pool));
400 if (!avctx->internal->pool) {
401 ret = AVERROR(ENOMEM);
405 avctx->internal->to_free = av_frame_alloc();
406 if (!avctx->internal->to_free) {
407 ret = AVERROR(ENOMEM);
411 avctx->internal->compat_decode_frame = av_frame_alloc();
412 if (!avctx->internal->compat_decode_frame) {
413 ret = AVERROR(ENOMEM);
417 avctx->internal->buffer_frame = av_frame_alloc();
418 if (!avctx->internal->buffer_frame) {
419 ret = AVERROR(ENOMEM);
423 avctx->internal->buffer_pkt = av_packet_alloc();
424 if (!avctx->internal->buffer_pkt) {
425 ret = AVERROR(ENOMEM);
429 avctx->internal->ds.in_pkt = av_packet_alloc();
430 if (!avctx->internal->ds.in_pkt) {
431 ret = AVERROR(ENOMEM);
435 avctx->internal->last_pkt_props = av_packet_alloc();
436 if (!avctx->internal->last_pkt_props) {
437 ret = AVERROR(ENOMEM);
441 if (codec->priv_data_size > 0) {
442 if (!avctx->priv_data) {
443 avctx->priv_data = av_mallocz(codec->priv_data_size);
444 if (!avctx->priv_data) {
445 ret = AVERROR(ENOMEM);
448 if (codec->priv_class) {
449 *(const AVClass **)avctx->priv_data = codec->priv_class;
450 av_opt_set_defaults(avctx->priv_data);
453 if (codec->priv_class && (ret = av_opt_set_dict(avctx->priv_data, &tmp)) < 0)
456 avctx->priv_data = NULL;
458 if ((ret = av_opt_set_dict(avctx, &tmp)) < 0)
461 if (avctx->coded_width && avctx->coded_height && !avctx->width && !avctx->height)
462 ret = ff_set_dimensions(avctx, avctx->coded_width, avctx->coded_height);
463 else if (avctx->width && avctx->height)
464 ret = ff_set_dimensions(avctx, avctx->width, avctx->height);
468 if ((avctx->coded_width || avctx->coded_height || avctx->width || avctx->height)
469 && ( av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx) < 0
470 || av_image_check_size(avctx->width, avctx->height, 0, avctx) < 0)) {
471 av_log(avctx, AV_LOG_WARNING, "ignoring invalid width/height values\n");
472 ff_set_dimensions(avctx, 0, 0);
475 if (avctx->width > 0 && avctx->height > 0) {
476 if (av_image_check_sar(avctx->width, avctx->height,
477 avctx->sample_aspect_ratio) < 0) {
478 av_log(avctx, AV_LOG_WARNING, "ignoring invalid SAR: %u/%u\n",
479 avctx->sample_aspect_ratio.num,
480 avctx->sample_aspect_ratio.den);
481 avctx->sample_aspect_ratio = (AVRational){ 0, 1 };
485 /* if the decoder init function was already called previously,
486 * free the already allocated subtitle_header before overwriting it */
487 if (av_codec_is_decoder(codec))
488 av_freep(&avctx->subtitle_header);
490 if (avctx->channels > FF_SANE_NB_CHANNELS) {
491 ret = AVERROR(EINVAL);
495 avctx->codec = codec;
496 if ((avctx->codec_type == AVMEDIA_TYPE_UNKNOWN || avctx->codec_type == codec->type) &&
497 avctx->codec_id == AV_CODEC_ID_NONE) {
498 avctx->codec_type = codec->type;
499 avctx->codec_id = codec->id;
501 if (avctx->codec_id != codec->id || (avctx->codec_type != codec->type
502 && avctx->codec_type != AVMEDIA_TYPE_ATTACHMENT)) {
503 av_log(avctx, AV_LOG_ERROR, "codec type or id mismatches\n");
504 ret = AVERROR(EINVAL);
507 avctx->frame_number = 0;
509 if ((avctx->codec->capabilities & AV_CODEC_CAP_EXPERIMENTAL) &&
510 avctx->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
511 ret = AVERROR_EXPERIMENTAL;
515 if (avctx->codec_type == AVMEDIA_TYPE_AUDIO &&
516 (!avctx->time_base.num || !avctx->time_base.den)) {
517 avctx->time_base.num = 1;
518 avctx->time_base.den = avctx->sample_rate;
522 ret = ff_thread_init(avctx);
527 if (!HAVE_THREADS && !(codec->capabilities & AV_CODEC_CAP_AUTO_THREADS))
528 avctx->thread_count = 1;
530 if (av_codec_is_encoder(avctx->codec)) {
532 #if FF_API_CODED_FRAME
533 FF_DISABLE_DEPRECATION_WARNINGS
534 avctx->coded_frame = av_frame_alloc();
535 if (!avctx->coded_frame) {
536 ret = AVERROR(ENOMEM);
539 FF_ENABLE_DEPRECATION_WARNINGS
542 if (avctx->time_base.num <= 0 || avctx->time_base.den <= 0) {
543 av_log(avctx, AV_LOG_ERROR, "The encoder timebase is not set.\n");
544 ret = AVERROR(EINVAL);
548 if (avctx->codec->sample_fmts) {
549 for (i = 0; avctx->codec->sample_fmts[i] != AV_SAMPLE_FMT_NONE; i++) {
550 if (avctx->sample_fmt == avctx->codec->sample_fmts[i])
552 if (avctx->channels == 1 &&
553 av_get_planar_sample_fmt(avctx->sample_fmt) ==
554 av_get_planar_sample_fmt(avctx->codec->sample_fmts[i])) {
555 avctx->sample_fmt = avctx->codec->sample_fmts[i];
559 if (avctx->codec->sample_fmts[i] == AV_SAMPLE_FMT_NONE) {
560 av_log(avctx, AV_LOG_ERROR, "Specified sample_fmt is not supported.\n");
561 ret = AVERROR(EINVAL);
565 if (avctx->codec->pix_fmts) {
566 for (i = 0; avctx->codec->pix_fmts[i] != AV_PIX_FMT_NONE; i++)
567 if (avctx->pix_fmt == avctx->codec->pix_fmts[i])
569 if (avctx->codec->pix_fmts[i] == AV_PIX_FMT_NONE) {
570 av_log(avctx, AV_LOG_ERROR, "Specified pix_fmt is not supported\n");
571 ret = AVERROR(EINVAL);
574 if (avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ420P ||
575 avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ422P ||
576 avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ440P ||
577 avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ444P)
578 avctx->color_range = AVCOL_RANGE_JPEG;
580 if (avctx->codec->supported_samplerates) {
581 for (i = 0; avctx->codec->supported_samplerates[i] != 0; i++)
582 if (avctx->sample_rate == avctx->codec->supported_samplerates[i])
584 if (avctx->codec->supported_samplerates[i] == 0) {
585 av_log(avctx, AV_LOG_ERROR, "Specified sample_rate is not supported\n");
586 ret = AVERROR(EINVAL);
590 if (avctx->codec->channel_layouts) {
591 if (!avctx->channel_layout) {
592 av_log(avctx, AV_LOG_WARNING, "channel_layout not specified\n");
594 for (i = 0; avctx->codec->channel_layouts[i] != 0; i++)
595 if (avctx->channel_layout == avctx->codec->channel_layouts[i])
597 if (avctx->codec->channel_layouts[i] == 0) {
598 av_log(avctx, AV_LOG_ERROR, "Specified channel_layout is not supported\n");
599 ret = AVERROR(EINVAL);
604 if (avctx->channel_layout && avctx->channels) {
605 if (av_get_channel_layout_nb_channels(avctx->channel_layout) != avctx->channels) {
606 av_log(avctx, AV_LOG_ERROR, "channel layout does not match number of channels\n");
607 ret = AVERROR(EINVAL);
610 } else if (avctx->channel_layout) {
611 avctx->channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
614 if (!avctx->rc_initial_buffer_occupancy)
615 avctx->rc_initial_buffer_occupancy = avctx->rc_buffer_size * 3 / 4;
617 if (avctx->ticks_per_frame &&
618 avctx->ticks_per_frame > INT_MAX / avctx->time_base.num) {
619 av_log(avctx, AV_LOG_ERROR,
620 "ticks_per_frame %d too large for the timebase %d/%d.",
621 avctx->ticks_per_frame,
622 avctx->time_base.num,
623 avctx->time_base.den);
627 if (avctx->hw_frames_ctx) {
628 AVHWFramesContext *frames_ctx = (AVHWFramesContext*)avctx->hw_frames_ctx->data;
629 if (frames_ctx->format != avctx->pix_fmt) {
630 av_log(avctx, AV_LOG_ERROR,
631 "Mismatching AVCodecContext.pix_fmt and AVHWFramesContext.format\n");
632 ret = AVERROR(EINVAL);
635 if (avctx->sw_pix_fmt != AV_PIX_FMT_NONE &&
636 avctx->sw_pix_fmt != frames_ctx->sw_format) {
637 av_log(avctx, AV_LOG_ERROR,
638 "Mismatching AVCodecContext.sw_pix_fmt (%s) "
639 "and AVHWFramesContext.sw_format (%s)\n",
640 av_get_pix_fmt_name(avctx->sw_pix_fmt),
641 av_get_pix_fmt_name(frames_ctx->sw_format));
642 ret = AVERROR(EINVAL);
645 avctx->sw_pix_fmt = frames_ctx->sw_format;
649 if (avctx->codec->init && !(avctx->active_thread_type & FF_THREAD_FRAME)) {
650 ret = avctx->codec->init(avctx);
656 #if FF_API_AUDIOENC_DELAY
657 if (av_codec_is_encoder(avctx->codec))
658 avctx->delay = avctx->initial_padding;
661 if (av_codec_is_decoder(avctx->codec)) {
662 /* validate channel layout from the decoder */
663 if (avctx->channel_layout) {
664 int channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
665 if (!avctx->channels)
666 avctx->channels = channels;
667 else if (channels != avctx->channels) {
668 av_log(avctx, AV_LOG_WARNING,
669 "channel layout does not match number of channels\n");
670 avctx->channel_layout = 0;
673 if (avctx->channels && avctx->channels < 0 ||
674 avctx->channels > FF_SANE_NB_CHANNELS) {
675 ret = AVERROR(EINVAL);
679 #if FF_API_AVCTX_TIMEBASE
680 if (avctx->framerate.num > 0 && avctx->framerate.den > 0)
681 avctx->time_base = av_inv_q(avctx->framerate);
685 if (!(codec->caps_internal & FF_CODEC_CAP_INIT_THREADSAFE) && codec->init) {
686 entangled_thread_counter--;
688 /* Release any user-supplied mutex. */
690 (*lockmgr_cb)(&codec_mutex, AV_LOCK_RELEASE);
695 av_dict_free(options);
702 (avctx->codec->caps_internal & FF_CODEC_CAP_INIT_CLEANUP))
703 avctx->codec->close(avctx);
705 if (avctx->priv_data && avctx->codec && avctx->codec->priv_class)
706 av_opt_free(avctx->priv_data);
709 #if FF_API_CODED_FRAME
710 FF_DISABLE_DEPRECATION_WARNINGS
711 av_frame_free(&avctx->coded_frame);
712 FF_ENABLE_DEPRECATION_WARNINGS
716 av_freep(&avctx->priv_data);
717 if (avctx->internal) {
718 av_frame_free(&avctx->internal->to_free);
719 av_frame_free(&avctx->internal->compat_decode_frame);
720 av_frame_free(&avctx->internal->buffer_frame);
721 av_packet_free(&avctx->internal->buffer_pkt);
722 av_packet_free(&avctx->internal->last_pkt_props);
724 av_packet_free(&avctx->internal->ds.in_pkt);
726 av_freep(&avctx->internal->pool);
728 av_freep(&avctx->internal);
733 void avsubtitle_free(AVSubtitle *sub)
737 for (i = 0; i < sub->num_rects; i++) {
738 av_freep(&sub->rects[i]->data[0]);
739 av_freep(&sub->rects[i]->data[1]);
740 av_freep(&sub->rects[i]->data[2]);
741 av_freep(&sub->rects[i]->data[3]);
742 av_freep(&sub->rects[i]->text);
743 av_freep(&sub->rects[i]->ass);
744 av_freep(&sub->rects[i]);
747 av_freep(&sub->rects);
749 memset(sub, 0, sizeof(AVSubtitle));
752 av_cold int avcodec_close(AVCodecContext *avctx)
756 if (avcodec_is_open(avctx)) {
757 FramePool *pool = avctx->internal->pool;
759 if (HAVE_THREADS && avctx->internal->thread_ctx)
760 ff_thread_free(avctx);
761 if (avctx->codec && avctx->codec->close)
762 avctx->codec->close(avctx);
763 av_frame_free(&avctx->internal->to_free);
764 av_frame_free(&avctx->internal->compat_decode_frame);
765 av_frame_free(&avctx->internal->buffer_frame);
766 av_packet_free(&avctx->internal->buffer_pkt);
767 av_packet_free(&avctx->internal->last_pkt_props);
769 av_packet_free(&avctx->internal->ds.in_pkt);
771 for (i = 0; i < FF_ARRAY_ELEMS(pool->pools); i++)
772 av_buffer_pool_uninit(&pool->pools[i]);
773 av_freep(&avctx->internal->pool);
775 if (avctx->hwaccel && avctx->hwaccel->uninit)
776 avctx->hwaccel->uninit(avctx);
777 av_freep(&avctx->internal->hwaccel_priv_data);
779 ff_decode_bsfs_uninit(avctx);
781 av_freep(&avctx->internal);
784 for (i = 0; i < avctx->nb_coded_side_data; i++)
785 av_freep(&avctx->coded_side_data[i].data);
786 av_freep(&avctx->coded_side_data);
787 avctx->nb_coded_side_data = 0;
789 av_buffer_unref(&avctx->hw_frames_ctx);
790 av_buffer_unref(&avctx->hw_device_ctx);
792 if (avctx->priv_data && avctx->codec && avctx->codec->priv_class)
793 av_opt_free(avctx->priv_data);
795 av_freep(&avctx->priv_data);
796 if (av_codec_is_encoder(avctx->codec)) {
797 av_freep(&avctx->extradata);
798 #if FF_API_CODED_FRAME
799 FF_DISABLE_DEPRECATION_WARNINGS
800 av_frame_free(&avctx->coded_frame);
801 FF_ENABLE_DEPRECATION_WARNINGS
805 avctx->active_thread_type = 0;
810 static AVCodec *find_encdec(enum AVCodecID id, int encoder)
812 AVCodec *p, *experimental = NULL;
815 if ((encoder ? av_codec_is_encoder(p) : av_codec_is_decoder(p)) &&
817 if (p->capabilities & AV_CODEC_CAP_EXPERIMENTAL && !experimental) {
827 AVCodec *avcodec_find_encoder(enum AVCodecID id)
829 return find_encdec(id, 1);
832 AVCodec *avcodec_find_encoder_by_name(const char *name)
839 if (av_codec_is_encoder(p) && strcmp(name, p->name) == 0)
846 AVCodec *avcodec_find_decoder(enum AVCodecID id)
848 return find_encdec(id, 0);
851 AVCodec *avcodec_find_decoder_by_name(const char *name)
858 if (av_codec_is_decoder(p) && strcmp(name, p->name) == 0)
865 static int get_bit_rate(AVCodecContext *ctx)
870 switch (ctx->codec_type) {
871 case AVMEDIA_TYPE_VIDEO:
872 case AVMEDIA_TYPE_DATA:
873 case AVMEDIA_TYPE_SUBTITLE:
874 case AVMEDIA_TYPE_ATTACHMENT:
875 bit_rate = ctx->bit_rate;
877 case AVMEDIA_TYPE_AUDIO:
878 bits_per_sample = av_get_bits_per_sample(ctx->codec_id);
879 bit_rate = bits_per_sample ? ctx->sample_rate * ctx->channels * bits_per_sample : ctx->bit_rate;
888 size_t av_get_codec_tag_string(char *buf, size_t buf_size, unsigned int codec_tag)
892 #define TAG_PRINT(x) \
893 (((x) >= '0' && (x) <= '9') || \
894 ((x) >= 'a' && (x) <= 'z') || ((x) >= 'A' && (x) <= 'Z') || \
895 ((x) == '.' || (x) == ' '))
897 for (i = 0; i < 4; i++) {
898 len = snprintf(buf, buf_size,
899 TAG_PRINT(codec_tag & 0xFF) ? "%c" : "[%d]", codec_tag & 0xFF);
901 buf_size = buf_size > len ? buf_size - len : 0;
908 void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)
910 const char *codec_name;
911 const char *profile = NULL;
915 AVRational display_aspect_ratio;
916 const AVCodecDescriptor *desc = avcodec_descriptor_get(enc->codec_id);
919 codec_name = desc->name;
920 profile = avcodec_profile_name(enc->codec_id, enc->profile);
921 } else if (enc->codec_id == AV_CODEC_ID_MPEG2TS) {
922 /* fake mpeg2 transport stream codec (currently not
924 codec_name = "mpeg2ts";
926 /* output avi tags */
928 av_get_codec_tag_string(tag_buf, sizeof(tag_buf), enc->codec_tag);
929 snprintf(buf1, sizeof(buf1), "%s / 0x%04X", tag_buf, enc->codec_tag);
933 switch (enc->codec_type) {
934 case AVMEDIA_TYPE_VIDEO:
935 snprintf(buf, buf_size,
937 codec_name, enc->mb_decision ? " (hq)" : "");
939 snprintf(buf + strlen(buf), buf_size - strlen(buf),
941 if (enc->codec_tag) {
943 av_get_codec_tag_string(tag_buf, sizeof(tag_buf), enc->codec_tag);
944 snprintf(buf + strlen(buf), buf_size - strlen(buf),
945 " [%s / 0x%04X]", tag_buf, enc->codec_tag);
948 av_strlcat(buf, "\n ", buf_size);
949 snprintf(buf + strlen(buf), buf_size - strlen(buf),
950 "%s", enc->pix_fmt == AV_PIX_FMT_NONE ? "none" :
951 av_get_pix_fmt_name(enc->pix_fmt));
953 if (enc->color_range != AVCOL_RANGE_UNSPECIFIED)
954 snprintf(buf + strlen(buf), buf_size - strlen(buf), ", %s",
955 av_color_range_name(enc->color_range));
956 if (enc->colorspace != AVCOL_SPC_UNSPECIFIED ||
957 enc->color_primaries != AVCOL_PRI_UNSPECIFIED ||
958 enc->color_trc != AVCOL_TRC_UNSPECIFIED) {
960 snprintf(buf + strlen(buf), buf_size - strlen(buf), ", %s/%s/%s",
961 av_color_space_name(enc->colorspace),
962 av_color_primaries_name(enc->color_primaries),
963 av_color_transfer_name(enc->color_trc));
965 if (av_log_get_level() >= AV_LOG_DEBUG &&
966 enc->chroma_sample_location != AVCHROMA_LOC_UNSPECIFIED)
967 snprintf(buf + strlen(buf), buf_size - strlen(buf), ", %s",
968 av_chroma_location_name(enc->chroma_sample_location));
971 av_strlcat(buf, new_line ? "\n " : ", ", buf_size);
973 snprintf(buf + strlen(buf), buf_size - strlen(buf),
975 enc->width, enc->height);
977 if (av_log_get_level() >= AV_LOG_VERBOSE &&
978 (enc->width != enc->coded_width ||
979 enc->height != enc->coded_height))
980 snprintf(buf + strlen(buf), buf_size - strlen(buf),
981 " (%dx%d)", enc->coded_width, enc->coded_height);
983 if (enc->sample_aspect_ratio.num) {
984 av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
985 enc->width * enc->sample_aspect_ratio.num,
986 enc->height * enc->sample_aspect_ratio.den,
988 snprintf(buf + strlen(buf), buf_size - strlen(buf),
989 " [PAR %d:%d DAR %d:%d]",
990 enc->sample_aspect_ratio.num, enc->sample_aspect_ratio.den,
991 display_aspect_ratio.num, display_aspect_ratio.den);
993 if (av_log_get_level() >= AV_LOG_DEBUG) {
994 int g = av_gcd(enc->time_base.num, enc->time_base.den);
995 snprintf(buf + strlen(buf), buf_size - strlen(buf),
997 enc->time_base.num / g, enc->time_base.den / g);
1001 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1002 ", q=%d-%d", enc->qmin, enc->qmax);
1005 case AVMEDIA_TYPE_AUDIO:
1006 snprintf(buf, buf_size,
1010 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1012 if (enc->codec_tag) {
1014 av_get_codec_tag_string(tag_buf, sizeof(tag_buf), enc->codec_tag);
1015 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1016 " [%s / 0x%04X]", tag_buf, enc->codec_tag);
1019 av_strlcat(buf, "\n ", buf_size);
1020 if (enc->sample_rate) {
1021 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1022 "%d Hz, ", enc->sample_rate);
1024 av_get_channel_layout_string(buf + strlen(buf), buf_size - strlen(buf), enc->channels, enc->channel_layout);
1025 if (enc->sample_fmt != AV_SAMPLE_FMT_NONE) {
1026 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1027 ", %s", av_get_sample_fmt_name(enc->sample_fmt));
1030 case AVMEDIA_TYPE_DATA:
1031 snprintf(buf, buf_size, "Data: %s", codec_name);
1033 case AVMEDIA_TYPE_SUBTITLE:
1034 snprintf(buf, buf_size, "Subtitle: %s", codec_name);
1036 case AVMEDIA_TYPE_ATTACHMENT:
1037 snprintf(buf, buf_size, "Attachment: %s", codec_name);
1040 snprintf(buf, buf_size, "Invalid Codec type %d", enc->codec_type);
1044 if (enc->flags & AV_CODEC_FLAG_PASS1)
1045 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1047 if (enc->flags & AV_CODEC_FLAG_PASS2)
1048 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1051 bitrate = get_bit_rate(enc);
1053 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1054 ", %d kb/s", bitrate / 1000);
1058 const char *av_get_profile_name(const AVCodec *codec, int profile)
1061 if (profile == FF_PROFILE_UNKNOWN || !codec->profiles)
1064 for (p = codec->profiles; p->profile != FF_PROFILE_UNKNOWN; p++)
1065 if (p->profile == profile)
1071 const char *avcodec_profile_name(enum AVCodecID codec_id, int profile)
1073 const AVCodecDescriptor *desc = avcodec_descriptor_get(codec_id);
1076 if (profile == FF_PROFILE_UNKNOWN || !desc || !desc->profiles)
1079 for (p = desc->profiles; p->profile != FF_PROFILE_UNKNOWN; p++)
1080 if (p->profile == profile)
1086 unsigned avcodec_version(void)
1088 return LIBAVCODEC_VERSION_INT;
1091 const char *avcodec_configuration(void)
1093 return LIBAV_CONFIGURATION;
1096 const char *avcodec_license(void)
1098 #define LICENSE_PREFIX "libavcodec license: "
1099 return LICENSE_PREFIX LIBAV_LICENSE + sizeof(LICENSE_PREFIX) - 1;
1102 int av_get_exact_bits_per_sample(enum AVCodecID codec_id)
1105 case AV_CODEC_ID_ADPCM_CT:
1106 case AV_CODEC_ID_ADPCM_IMA_APC:
1107 case AV_CODEC_ID_ADPCM_IMA_EA_SEAD:
1108 case AV_CODEC_ID_ADPCM_IMA_WS:
1109 case AV_CODEC_ID_ADPCM_G722:
1110 case AV_CODEC_ID_ADPCM_YAMAHA:
1112 case AV_CODEC_ID_PCM_ALAW:
1113 case AV_CODEC_ID_PCM_MULAW:
1114 case AV_CODEC_ID_PCM_S8:
1115 case AV_CODEC_ID_PCM_U8:
1116 case AV_CODEC_ID_PCM_ZORK:
1118 case AV_CODEC_ID_PCM_S16BE:
1119 case AV_CODEC_ID_PCM_S16BE_PLANAR:
1120 case AV_CODEC_ID_PCM_S16LE:
1121 case AV_CODEC_ID_PCM_S16LE_PLANAR:
1122 case AV_CODEC_ID_PCM_U16BE:
1123 case AV_CODEC_ID_PCM_U16LE:
1125 case AV_CODEC_ID_PCM_S24DAUD:
1126 case AV_CODEC_ID_PCM_S24BE:
1127 case AV_CODEC_ID_PCM_S24LE:
1128 case AV_CODEC_ID_PCM_S24LE_PLANAR:
1129 case AV_CODEC_ID_PCM_U24BE:
1130 case AV_CODEC_ID_PCM_U24LE:
1132 case AV_CODEC_ID_PCM_S32BE:
1133 case AV_CODEC_ID_PCM_S32LE:
1134 case AV_CODEC_ID_PCM_S32LE_PLANAR:
1135 case AV_CODEC_ID_PCM_U32BE:
1136 case AV_CODEC_ID_PCM_U32LE:
1137 case AV_CODEC_ID_PCM_F32BE:
1138 case AV_CODEC_ID_PCM_F32LE:
1140 case AV_CODEC_ID_PCM_F64BE:
1141 case AV_CODEC_ID_PCM_F64LE:
1148 int av_get_bits_per_sample(enum AVCodecID codec_id)
1151 case AV_CODEC_ID_ADPCM_SBPRO_2:
1153 case AV_CODEC_ID_ADPCM_SBPRO_3:
1155 case AV_CODEC_ID_ADPCM_SBPRO_4:
1156 case AV_CODEC_ID_ADPCM_IMA_WAV:
1157 case AV_CODEC_ID_ADPCM_IMA_QT:
1158 case AV_CODEC_ID_ADPCM_SWF:
1159 case AV_CODEC_ID_ADPCM_MS:
1162 return av_get_exact_bits_per_sample(codec_id);
1166 static int get_audio_frame_duration(enum AVCodecID id, int sr, int ch, int ba,
1167 uint32_t tag, int bits_per_coded_sample, int frame_bytes)
1169 int bps = av_get_exact_bits_per_sample(id);
1171 /* codecs with an exact constant bits per sample */
1172 if (bps > 0 && ch > 0 && frame_bytes > 0)
1173 return (frame_bytes * 8) / (bps * ch);
1174 bps = bits_per_coded_sample;
1176 /* codecs with a fixed packet duration */
1178 case AV_CODEC_ID_ADPCM_ADX: return 32;
1179 case AV_CODEC_ID_ADPCM_IMA_QT: return 64;
1180 case AV_CODEC_ID_ADPCM_EA_XAS: return 128;
1181 case AV_CODEC_ID_AMR_NB:
1182 case AV_CODEC_ID_GSM:
1183 case AV_CODEC_ID_QCELP:
1184 case AV_CODEC_ID_RA_144:
1185 case AV_CODEC_ID_RA_288: return 160;
1186 case AV_CODEC_ID_IMC: return 256;
1187 case AV_CODEC_ID_AMR_WB:
1188 case AV_CODEC_ID_GSM_MS: return 320;
1189 case AV_CODEC_ID_MP1: return 384;
1190 case AV_CODEC_ID_ATRAC1: return 512;
1191 case AV_CODEC_ID_ATRAC3: return 1024;
1192 case AV_CODEC_ID_MP2:
1193 case AV_CODEC_ID_MUSEPACK7: return 1152;
1194 case AV_CODEC_ID_AC3: return 1536;
1198 /* calc from sample rate */
1199 if (id == AV_CODEC_ID_TTA)
1200 return 256 * sr / 245;
1203 /* calc from sample rate and channels */
1204 if (id == AV_CODEC_ID_BINKAUDIO_DCT)
1205 return (480 << (sr / 22050)) / ch;
1208 if (id == AV_CODEC_ID_MP3)
1209 return sr <= 24000 ? 576 : 1152;
1213 /* calc from block_align */
1214 if (id == AV_CODEC_ID_SIPR) {
1216 case 20: return 160;
1217 case 19: return 144;
1218 case 29: return 288;
1219 case 37: return 480;
1221 } else if (id == AV_CODEC_ID_ILBC) {
1223 case 38: return 160;
1224 case 50: return 240;
1229 if (frame_bytes > 0) {
1230 /* calc from frame_bytes only */
1231 if (id == AV_CODEC_ID_TRUESPEECH)
1232 return 240 * (frame_bytes / 32);
1233 if (id == AV_CODEC_ID_NELLYMOSER)
1234 return 256 * (frame_bytes / 64);
1237 /* calc from frame_bytes and bits_per_coded_sample */
1238 if (id == AV_CODEC_ID_ADPCM_G726)
1239 return frame_bytes * 8 / bps;
1243 /* calc from frame_bytes and channels */
1245 case AV_CODEC_ID_ADPCM_4XM:
1246 case AV_CODEC_ID_ADPCM_IMA_ISS:
1247 return (frame_bytes - 4 * ch) * 2 / ch;
1248 case AV_CODEC_ID_ADPCM_IMA_SMJPEG:
1249 return (frame_bytes - 4) * 2 / ch;
1250 case AV_CODEC_ID_ADPCM_IMA_AMV:
1251 return (frame_bytes - 8) * 2 / ch;
1252 case AV_CODEC_ID_ADPCM_XA:
1253 return (frame_bytes / 128) * 224 / ch;
1254 case AV_CODEC_ID_INTERPLAY_DPCM:
1255 return (frame_bytes - 6 - ch) / ch;
1256 case AV_CODEC_ID_ROQ_DPCM:
1257 return (frame_bytes - 8) / ch;
1258 case AV_CODEC_ID_XAN_DPCM:
1259 return (frame_bytes - 2 * ch) / ch;
1260 case AV_CODEC_ID_MACE3:
1261 return 3 * frame_bytes / ch;
1262 case AV_CODEC_ID_MACE6:
1263 return 6 * frame_bytes / ch;
1264 case AV_CODEC_ID_PCM_LXF:
1265 return 2 * (frame_bytes / (5 * ch));
1269 /* calc from frame_bytes, channels, and codec_tag */
1270 if (id == AV_CODEC_ID_SOL_DPCM) {
1272 return frame_bytes / ch;
1274 return frame_bytes * 2 / ch;
1279 /* calc from frame_bytes, channels, and block_align */
1280 int blocks = frame_bytes / ba;
1282 case AV_CODEC_ID_ADPCM_IMA_WAV:
1283 return blocks * (1 + (ba - 4 * ch) / (4 * ch) * 8);
1284 case AV_CODEC_ID_ADPCM_IMA_DK3:
1285 return blocks * (((ba - 16) * 2 / 3 * 4) / ch);
1286 case AV_CODEC_ID_ADPCM_IMA_DK4:
1287 return blocks * (1 + (ba - 4 * ch) * 2 / ch);
1288 case AV_CODEC_ID_ADPCM_MS:
1289 return blocks * (2 + (ba - 7 * ch) * 2 / ch);
1294 /* calc from frame_bytes, channels, and bits_per_coded_sample */
1296 case AV_CODEC_ID_PCM_DVD:
1297 return 2 * (frame_bytes / ((bps * 2 / 8) * ch));
1298 case AV_CODEC_ID_PCM_BLURAY:
1299 return frame_bytes / ((FFALIGN(ch, 2) * bps) / 8);
1300 case AV_CODEC_ID_S302M:
1301 return 2 * (frame_bytes / ((bps + 4) / 4)) / ch;
1310 int av_get_audio_frame_duration(AVCodecContext *avctx, int frame_bytes)
1312 return get_audio_frame_duration(avctx->codec_id, avctx->sample_rate,
1313 avctx->channels, avctx->block_align,
1314 avctx->codec_tag, avctx->bits_per_coded_sample,
1318 int av_get_audio_frame_duration2(AVCodecParameters *par, int frame_bytes)
1320 return get_audio_frame_duration(par->codec_id, par->sample_rate,
1321 par->channels, par->block_align,
1322 par->codec_tag, par->bits_per_coded_sample,
1327 int ff_thread_init(AVCodecContext *s)
1334 unsigned int av_xiphlacing(unsigned char *s, unsigned int v)
1348 int ff_match_2uint16(const uint16_t(*tab)[2], int size, int a, int b)
1351 for (i = 0; i < size && !(tab[i][0] == a && tab[i][1] == b); i++) ;
1355 static AVHWAccel *first_hwaccel = NULL;
1357 void av_register_hwaccel(AVHWAccel *hwaccel)
1359 AVHWAccel **p = &first_hwaccel;
1363 hwaccel->next = NULL;
1366 AVHWAccel *av_hwaccel_next(const AVHWAccel *hwaccel)
1368 return hwaccel ? hwaccel->next : first_hwaccel;
1371 int av_lockmgr_register(int (*cb)(void **mutex, enum AVLockOp op))
1374 // There is no good way to rollback a failure to destroy the
1375 // mutex, so we ignore failures.
1376 lockmgr_cb(&codec_mutex, AV_LOCK_DESTROY);
1377 lockmgr_cb(&avformat_mutex, AV_LOCK_DESTROY);
1380 avformat_mutex = NULL;
1384 void *new_codec_mutex = NULL;
1385 void *new_avformat_mutex = NULL;
1387 if (err = cb(&new_codec_mutex, AV_LOCK_CREATE)) {
1388 return err > 0 ? AVERROR_UNKNOWN : err;
1390 if (err = cb(&new_avformat_mutex, AV_LOCK_CREATE)) {
1391 // Ignore failures to destroy the newly created mutex.
1392 cb(&new_codec_mutex, AV_LOCK_DESTROY);
1393 return err > 0 ? AVERROR_UNKNOWN : err;
1396 codec_mutex = new_codec_mutex;
1397 avformat_mutex = new_avformat_mutex;
1403 int avpriv_lock_avformat(void)
1406 if ((*lockmgr_cb)(&avformat_mutex, AV_LOCK_OBTAIN))
1412 int avpriv_unlock_avformat(void)
1415 if ((*lockmgr_cb)(&avformat_mutex, AV_LOCK_RELEASE))
1421 unsigned int avpriv_toupper4(unsigned int x)
1423 return av_toupper(x & 0xFF) +
1424 (av_toupper((x >> 8) & 0xFF) << 8) +
1425 (av_toupper((x >> 16) & 0xFF) << 16) +
1426 (av_toupper((x >> 24) & 0xFF) << 24);
1429 int ff_thread_ref_frame(ThreadFrame *dst, ThreadFrame *src)
1433 dst->owner = src->owner;
1435 ret = av_frame_ref(dst->f, src->f);
1439 if (src->progress &&
1440 !(dst->progress = av_buffer_ref(src->progress))) {
1441 ff_thread_release_buffer(dst->owner, dst);
1442 return AVERROR(ENOMEM);
1450 int ff_thread_get_buffer(AVCodecContext *avctx, ThreadFrame *f, int flags)
1453 return ff_get_buffer(avctx, f->f, flags);
1456 void ff_thread_release_buffer(AVCodecContext *avctx, ThreadFrame *f)
1459 av_frame_unref(f->f);
1462 void ff_thread_finish_setup(AVCodecContext *avctx)
1466 void ff_thread_report_progress(ThreadFrame *f, int progress, int field)
1470 void ff_thread_await_progress(ThreadFrame *f, int progress, int field)
1476 int avcodec_is_open(AVCodecContext *s)
1478 return !!s->internal;
1481 const uint8_t *avpriv_find_start_code(const uint8_t *restrict p,
1483 uint32_t * restrict state)
1491 for (i = 0; i < 3; i++) {
1492 uint32_t tmp = *state << 8;
1493 *state = tmp + *(p++);
1494 if (tmp == 0x100 || p == end)
1499 if (p[-1] > 1 ) p += 3;
1500 else if (p[-2] ) p += 2;
1501 else if (p[-3]|(p[-1]-1)) p++;
1508 p = FFMIN(p, end) - 4;
1509 *state = AV_RB32(p);
1514 AVCPBProperties *av_cpb_properties_alloc(size_t *size)
1516 AVCPBProperties *props = av_mallocz(sizeof(AVCPBProperties));
1521 *size = sizeof(*props);
1523 props->vbv_delay = UINT64_MAX;
1528 AVCPBProperties *ff_add_cpb_side_data(AVCodecContext *avctx)
1530 AVPacketSideData *tmp;
1531 AVCPBProperties *props;
1534 props = av_cpb_properties_alloc(&size);
1538 tmp = av_realloc_array(avctx->coded_side_data, avctx->nb_coded_side_data + 1, sizeof(*tmp));
1544 avctx->coded_side_data = tmp;
1545 avctx->nb_coded_side_data++;
1547 avctx->coded_side_data[avctx->nb_coded_side_data - 1].type = AV_PKT_DATA_CPB_PROPERTIES;
1548 avctx->coded_side_data[avctx->nb_coded_side_data - 1].data = (uint8_t*)props;
1549 avctx->coded_side_data[avctx->nb_coded_side_data - 1].size = size;
1554 static void codec_parameters_reset(AVCodecParameters *par)
1556 av_freep(&par->extradata);
1558 memset(par, 0, sizeof(*par));
1560 par->codec_type = AVMEDIA_TYPE_UNKNOWN;
1561 par->codec_id = AV_CODEC_ID_NONE;
1563 par->field_order = AV_FIELD_UNKNOWN;
1564 par->color_range = AVCOL_RANGE_UNSPECIFIED;
1565 par->color_primaries = AVCOL_PRI_UNSPECIFIED;
1566 par->color_trc = AVCOL_TRC_UNSPECIFIED;
1567 par->color_space = AVCOL_SPC_UNSPECIFIED;
1568 par->chroma_location = AVCHROMA_LOC_UNSPECIFIED;
1569 par->sample_aspect_ratio = (AVRational){ 0, 1 };
1572 AVCodecParameters *avcodec_parameters_alloc(void)
1574 AVCodecParameters *par = av_mallocz(sizeof(*par));
1578 codec_parameters_reset(par);
1582 void avcodec_parameters_free(AVCodecParameters **ppar)
1584 AVCodecParameters *par = *ppar;
1588 codec_parameters_reset(par);
1593 int avcodec_parameters_copy(AVCodecParameters *dst, const AVCodecParameters *src)
1595 codec_parameters_reset(dst);
1596 memcpy(dst, src, sizeof(*dst));
1598 dst->extradata = NULL;
1599 dst->extradata_size = 0;
1600 if (src->extradata) {
1601 dst->extradata = av_mallocz(src->extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);
1602 if (!dst->extradata)
1603 return AVERROR(ENOMEM);
1604 memcpy(dst->extradata, src->extradata, src->extradata_size);
1605 dst->extradata_size = src->extradata_size;
1611 int avcodec_parameters_from_context(AVCodecParameters *par,
1612 const AVCodecContext *codec)
1614 codec_parameters_reset(par);
1616 par->codec_type = codec->codec_type;
1617 par->codec_id = codec->codec_id;
1618 par->codec_tag = codec->codec_tag;
1620 par->bit_rate = codec->bit_rate;
1621 par->bits_per_coded_sample = codec->bits_per_coded_sample;
1622 par->profile = codec->profile;
1623 par->level = codec->level;
1625 switch (par->codec_type) {
1626 case AVMEDIA_TYPE_VIDEO:
1627 par->format = codec->pix_fmt;
1628 par->width = codec->width;
1629 par->height = codec->height;
1630 par->field_order = codec->field_order;
1631 par->color_range = codec->color_range;
1632 par->color_primaries = codec->color_primaries;
1633 par->color_trc = codec->color_trc;
1634 par->color_space = codec->colorspace;
1635 par->chroma_location = codec->chroma_sample_location;
1636 par->sample_aspect_ratio = codec->sample_aspect_ratio;
1638 case AVMEDIA_TYPE_AUDIO:
1639 par->format = codec->sample_fmt;
1640 par->channel_layout = codec->channel_layout;
1641 par->channels = codec->channels;
1642 par->sample_rate = codec->sample_rate;
1643 par->block_align = codec->block_align;
1644 par->initial_padding = codec->initial_padding;
1648 if (codec->extradata) {
1649 par->extradata = av_mallocz(codec->extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);
1650 if (!par->extradata)
1651 return AVERROR(ENOMEM);
1652 memcpy(par->extradata, codec->extradata, codec->extradata_size);
1653 par->extradata_size = codec->extradata_size;
1659 int avcodec_parameters_to_context(AVCodecContext *codec,
1660 const AVCodecParameters *par)
1662 codec->codec_type = par->codec_type;
1663 codec->codec_id = par->codec_id;
1664 codec->codec_tag = par->codec_tag;
1666 codec->bit_rate = par->bit_rate;
1667 codec->bits_per_coded_sample = par->bits_per_coded_sample;
1668 codec->profile = par->profile;
1669 codec->level = par->level;
1671 switch (par->codec_type) {
1672 case AVMEDIA_TYPE_VIDEO:
1673 codec->pix_fmt = par->format;
1674 codec->width = par->width;
1675 codec->height = par->height;
1676 codec->field_order = par->field_order;
1677 codec->color_range = par->color_range;
1678 codec->color_primaries = par->color_primaries;
1679 codec->color_trc = par->color_trc;
1680 codec->colorspace = par->color_space;
1681 codec->chroma_sample_location = par->chroma_location;
1682 codec->sample_aspect_ratio = par->sample_aspect_ratio;
1684 case AVMEDIA_TYPE_AUDIO:
1685 codec->sample_fmt = par->format;
1686 codec->channel_layout = par->channel_layout;
1687 codec->channels = par->channels;
1688 codec->sample_rate = par->sample_rate;
1689 codec->block_align = par->block_align;
1690 codec->initial_padding = par->initial_padding;
1694 if (par->extradata) {
1695 av_freep(&codec->extradata);
1696 codec->extradata = av_mallocz(par->extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);
1697 if (!codec->extradata)
1698 return AVERROR(ENOMEM);
1699 memcpy(codec->extradata, par->extradata, par->extradata_size);
1700 codec->extradata_size = par->extradata_size;