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"
45 #include "libavutil/opt.h"
47 #include "mpegvideo.h"
50 #include "bytestream.h"
57 static int volatile entangled_thread_counter = 0;
58 static int (*lockmgr_cb)(void **mutex, enum AVLockOp op);
59 static void *codec_mutex;
60 static void *avformat_mutex;
62 void av_fast_padded_malloc(void *ptr, unsigned int *size, size_t min_size)
65 if (min_size > SIZE_MAX - AV_INPUT_BUFFER_PADDING_SIZE) {
70 av_fast_malloc(p, size, min_size + AV_INPUT_BUFFER_PADDING_SIZE);
72 memset((uint8_t *)*p + min_size, 0, AV_INPUT_BUFFER_PADDING_SIZE);
75 /* encoder management */
76 static AVCodec *first_avcodec = NULL;
78 AVCodec *av_codec_next(const AVCodec *c)
86 static av_cold void avcodec_init(void)
88 static int initialized = 0;
95 ff_me_cmp_init_static();
98 int av_codec_is_encoder(const AVCodec *codec)
100 return codec && (codec->encode_sub || codec->encode2 ||codec->send_frame);
103 int av_codec_is_decoder(const AVCodec *codec)
105 return codec && (codec->decode || codec->receive_frame);
108 av_cold void avcodec_register(AVCodec *codec)
118 if (codec->init_static_data)
119 codec->init_static_data(codec);
122 int ff_set_dimensions(AVCodecContext *s, int width, int height)
124 int ret = av_image_check_size(width, height, 0, s);
128 s->width = s->coded_width = width;
129 s->height = s->coded_height = height;
134 int ff_set_sar(AVCodecContext *avctx, AVRational sar)
136 int ret = av_image_check_sar(avctx->width, avctx->height, sar);
139 av_log(avctx, AV_LOG_WARNING, "ignoring invalid SAR: %d/%d\n",
141 avctx->sample_aspect_ratio = (AVRational){ 0, 1 };
144 avctx->sample_aspect_ratio = sar;
149 int ff_side_data_update_matrix_encoding(AVFrame *frame,
150 enum AVMatrixEncoding matrix_encoding)
152 AVFrameSideData *side_data;
153 enum AVMatrixEncoding *data;
155 side_data = av_frame_get_side_data(frame, AV_FRAME_DATA_MATRIXENCODING);
157 side_data = av_frame_new_side_data(frame, AV_FRAME_DATA_MATRIXENCODING,
158 sizeof(enum AVMatrixEncoding));
161 return AVERROR(ENOMEM);
163 data = (enum AVMatrixEncoding*)side_data->data;
164 *data = matrix_encoding;
169 void avcodec_align_dimensions2(AVCodecContext *s, int *width, int *height,
170 int linesize_align[AV_NUM_DATA_POINTERS])
172 size_t max_align = av_cpu_max_align();
177 switch (s->pix_fmt) {
178 case AV_PIX_FMT_YUV420P:
179 case AV_PIX_FMT_YUYV422:
180 case AV_PIX_FMT_YVYU422:
181 case AV_PIX_FMT_UYVY422:
182 case AV_PIX_FMT_YUV422P:
183 case AV_PIX_FMT_YUV440P:
184 case AV_PIX_FMT_YUV444P:
185 case AV_PIX_FMT_GBRP:
186 case AV_PIX_FMT_GBRAP:
187 case AV_PIX_FMT_GRAY8:
188 case AV_PIX_FMT_GRAY16BE:
189 case AV_PIX_FMT_GRAY16LE:
190 case AV_PIX_FMT_YUVJ420P:
191 case AV_PIX_FMT_YUVJ422P:
192 case AV_PIX_FMT_YUVJ440P:
193 case AV_PIX_FMT_YUVJ444P:
194 case AV_PIX_FMT_YUVA420P:
195 case AV_PIX_FMT_YUVA422P:
196 case AV_PIX_FMT_YUVA444P:
197 case AV_PIX_FMT_YUV420P9LE:
198 case AV_PIX_FMT_YUV420P9BE:
199 case AV_PIX_FMT_YUV420P10LE:
200 case AV_PIX_FMT_YUV420P10BE:
201 case AV_PIX_FMT_YUV422P9LE:
202 case AV_PIX_FMT_YUV422P9BE:
203 case AV_PIX_FMT_YUV422P10LE:
204 case AV_PIX_FMT_YUV422P10BE:
205 case AV_PIX_FMT_YUVA422P10LE:
206 case AV_PIX_FMT_YUVA422P10BE:
207 case AV_PIX_FMT_YUV444P9LE:
208 case AV_PIX_FMT_YUV444P9BE:
209 case AV_PIX_FMT_YUV444P10LE:
210 case AV_PIX_FMT_YUV444P10BE:
211 case AV_PIX_FMT_YUVA444P10LE:
212 case AV_PIX_FMT_YUVA444P10BE:
213 case AV_PIX_FMT_GBRP9LE:
214 case AV_PIX_FMT_GBRP9BE:
215 case AV_PIX_FMT_GBRP10LE:
216 case AV_PIX_FMT_GBRP10BE:
217 case AV_PIX_FMT_GBRAP12LE:
218 case AV_PIX_FMT_GBRAP12BE:
219 w_align = 16; //FIXME assume 16 pixel per macroblock
220 h_align = 16 * 2; // interlaced needs 2 macroblocks height
222 case AV_PIX_FMT_YUV411P:
223 case AV_PIX_FMT_UYYVYY411:
227 case AV_PIX_FMT_YUV410P:
228 if (s->codec_id == AV_CODEC_ID_SVQ1) {
232 case AV_PIX_FMT_RGB555:
233 if (s->codec_id == AV_CODEC_ID_RPZA) {
237 case AV_PIX_FMT_PAL8:
238 case AV_PIX_FMT_BGR8:
239 case AV_PIX_FMT_RGB8:
240 if (s->codec_id == AV_CODEC_ID_SMC) {
245 case AV_PIX_FMT_BGR24:
246 if ((s->codec_id == AV_CODEC_ID_MSZH) ||
247 (s->codec_id == AV_CODEC_ID_ZLIB)) {
258 *width = FFALIGN(*width, w_align);
259 *height = FFALIGN(*height, h_align);
260 if (s->codec_id == AV_CODEC_ID_H264)
261 // some of the optimized chroma MC reads one line too much
264 for (i = 0; i < 4; i++)
265 linesize_align[i] = max_align;
268 void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height)
270 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(s->pix_fmt);
271 int chroma_shift = desc->log2_chroma_w;
272 int linesize_align[AV_NUM_DATA_POINTERS];
275 avcodec_align_dimensions2(s, width, height, linesize_align);
276 align = FFMAX(linesize_align[0], linesize_align[3]);
277 linesize_align[1] <<= chroma_shift;
278 linesize_align[2] <<= chroma_shift;
279 align = FFMAX3(align, linesize_align[1], linesize_align[2]);
280 *width = FFALIGN(*width, align);
283 int avcodec_fill_audio_frame(AVFrame *frame, int nb_channels,
284 enum AVSampleFormat sample_fmt, const uint8_t *buf,
285 int buf_size, int align)
287 int ch, planar, needed_size, ret = 0;
289 needed_size = av_samples_get_buffer_size(NULL, nb_channels,
290 frame->nb_samples, sample_fmt,
292 if (buf_size < needed_size)
293 return AVERROR(EINVAL);
295 planar = av_sample_fmt_is_planar(sample_fmt);
296 if (planar && nb_channels > AV_NUM_DATA_POINTERS) {
297 if (!(frame->extended_data = av_mallocz(nb_channels *
298 sizeof(*frame->extended_data))))
299 return AVERROR(ENOMEM);
301 frame->extended_data = frame->data;
304 if ((ret = av_samples_fill_arrays(frame->extended_data, &frame->linesize[0],
305 buf, nb_channels, frame->nb_samples,
306 sample_fmt, align)) < 0) {
307 if (frame->extended_data != frame->data)
308 av_free(frame->extended_data);
311 if (frame->extended_data != frame->data) {
312 for (ch = 0; ch < AV_NUM_DATA_POINTERS; ch++)
313 frame->data[ch] = frame->extended_data[ch];
319 int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2), void *arg, int *ret, int count, int size)
323 for (i = 0; i < count; i++) {
324 int r = func(c, (char *)arg + i * size);
331 int avcodec_default_execute2(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2, int jobnr, int threadnr), void *arg, int *ret, int count)
335 for (i = 0; i < count; i++) {
336 int r = func(c, arg, i, 0);
343 int attribute_align_arg avcodec_open2(AVCodecContext *avctx, const AVCodec *codec, AVDictionary **options)
346 AVDictionary *tmp = NULL;
348 if (avcodec_is_open(avctx))
351 if ((!codec && !avctx->codec)) {
352 av_log(avctx, AV_LOG_ERROR, "No codec provided to avcodec_open2().\n");
353 return AVERROR(EINVAL);
355 if ((codec && avctx->codec && codec != avctx->codec)) {
356 av_log(avctx, AV_LOG_ERROR, "This AVCodecContext was allocated for %s, "
357 "but %s passed to avcodec_open2().\n", avctx->codec->name, codec->name);
358 return AVERROR(EINVAL);
361 codec = avctx->codec;
363 if (avctx->extradata_size < 0 || avctx->extradata_size >= FF_MAX_EXTRADATA_SIZE)
364 return AVERROR(EINVAL);
367 av_dict_copy(&tmp, *options, 0);
369 /* If there is a user-supplied mutex locking routine, call it. */
370 if (!(codec->caps_internal & FF_CODEC_CAP_INIT_THREADSAFE) && codec->init) {
372 if ((*lockmgr_cb)(&codec_mutex, AV_LOCK_OBTAIN))
376 entangled_thread_counter++;
377 if (entangled_thread_counter != 1) {
378 av_log(avctx, AV_LOG_ERROR,
379 "Insufficient thread locking. At least %d threads are "
380 "calling avcodec_open2() at the same time right now.\n",
381 entangled_thread_counter);
387 avctx->internal = av_mallocz(sizeof(AVCodecInternal));
388 if (!avctx->internal) {
389 ret = AVERROR(ENOMEM);
393 avctx->internal->pool = av_mallocz(sizeof(*avctx->internal->pool));
394 if (!avctx->internal->pool) {
395 ret = AVERROR(ENOMEM);
399 avctx->internal->to_free = av_frame_alloc();
400 if (!avctx->internal->to_free) {
401 ret = AVERROR(ENOMEM);
405 avctx->internal->compat_decode_frame = av_frame_alloc();
406 if (!avctx->internal->compat_decode_frame) {
407 ret = AVERROR(ENOMEM);
411 avctx->internal->buffer_frame = av_frame_alloc();
412 if (!avctx->internal->buffer_frame) {
413 ret = AVERROR(ENOMEM);
417 avctx->internal->buffer_pkt = av_packet_alloc();
418 if (!avctx->internal->buffer_pkt) {
419 ret = AVERROR(ENOMEM);
423 avctx->internal->ds.in_pkt = av_packet_alloc();
424 if (!avctx->internal->ds.in_pkt) {
425 ret = AVERROR(ENOMEM);
429 avctx->internal->last_pkt_props = av_packet_alloc();
430 if (!avctx->internal->last_pkt_props) {
431 ret = AVERROR(ENOMEM);
435 if (codec->priv_data_size > 0) {
436 if (!avctx->priv_data) {
437 avctx->priv_data = av_mallocz(codec->priv_data_size);
438 if (!avctx->priv_data) {
439 ret = AVERROR(ENOMEM);
442 if (codec->priv_class) {
443 *(const AVClass **)avctx->priv_data = codec->priv_class;
444 av_opt_set_defaults(avctx->priv_data);
447 if (codec->priv_class && (ret = av_opt_set_dict(avctx->priv_data, &tmp)) < 0)
450 avctx->priv_data = NULL;
452 if ((ret = av_opt_set_dict(avctx, &tmp)) < 0)
455 if (avctx->coded_width && avctx->coded_height && !avctx->width && !avctx->height)
456 ret = ff_set_dimensions(avctx, avctx->coded_width, avctx->coded_height);
457 else if (avctx->width && avctx->height)
458 ret = ff_set_dimensions(avctx, avctx->width, avctx->height);
462 if ((avctx->coded_width || avctx->coded_height || avctx->width || avctx->height)
463 && ( av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx) < 0
464 || av_image_check_size(avctx->width, avctx->height, 0, avctx) < 0)) {
465 av_log(avctx, AV_LOG_WARNING, "ignoring invalid width/height values\n");
466 ff_set_dimensions(avctx, 0, 0);
469 if (avctx->width > 0 && avctx->height > 0) {
470 if (av_image_check_sar(avctx->width, avctx->height,
471 avctx->sample_aspect_ratio) < 0) {
472 av_log(avctx, AV_LOG_WARNING, "ignoring invalid SAR: %u/%u\n",
473 avctx->sample_aspect_ratio.num,
474 avctx->sample_aspect_ratio.den);
475 avctx->sample_aspect_ratio = (AVRational){ 0, 1 };
479 /* if the decoder init function was already called previously,
480 * free the already allocated subtitle_header before overwriting it */
481 if (av_codec_is_decoder(codec))
482 av_freep(&avctx->subtitle_header);
484 if (avctx->channels > FF_SANE_NB_CHANNELS) {
485 ret = AVERROR(EINVAL);
489 avctx->codec = codec;
490 if ((avctx->codec_type == AVMEDIA_TYPE_UNKNOWN || avctx->codec_type == codec->type) &&
491 avctx->codec_id == AV_CODEC_ID_NONE) {
492 avctx->codec_type = codec->type;
493 avctx->codec_id = codec->id;
495 if (avctx->codec_id != codec->id || (avctx->codec_type != codec->type
496 && avctx->codec_type != AVMEDIA_TYPE_ATTACHMENT)) {
497 av_log(avctx, AV_LOG_ERROR, "codec type or id mismatches\n");
498 ret = AVERROR(EINVAL);
501 avctx->frame_number = 0;
503 if ((avctx->codec->capabilities & AV_CODEC_CAP_EXPERIMENTAL) &&
504 avctx->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
505 ret = AVERROR_EXPERIMENTAL;
509 if (avctx->codec_type == AVMEDIA_TYPE_AUDIO &&
510 (!avctx->time_base.num || !avctx->time_base.den)) {
511 avctx->time_base.num = 1;
512 avctx->time_base.den = avctx->sample_rate;
516 ret = ff_thread_init(avctx);
521 if (!HAVE_THREADS && !(codec->capabilities & AV_CODEC_CAP_AUTO_THREADS))
522 avctx->thread_count = 1;
524 if (av_codec_is_encoder(avctx->codec)) {
526 #if FF_API_CODED_FRAME
527 FF_DISABLE_DEPRECATION_WARNINGS
528 avctx->coded_frame = av_frame_alloc();
529 if (!avctx->coded_frame) {
530 ret = AVERROR(ENOMEM);
533 FF_ENABLE_DEPRECATION_WARNINGS
536 if (avctx->time_base.num <= 0 || avctx->time_base.den <= 0) {
537 av_log(avctx, AV_LOG_ERROR, "The encoder timebase is not set.\n");
538 ret = AVERROR(EINVAL);
542 if (avctx->codec->sample_fmts) {
543 for (i = 0; avctx->codec->sample_fmts[i] != AV_SAMPLE_FMT_NONE; i++) {
544 if (avctx->sample_fmt == avctx->codec->sample_fmts[i])
546 if (avctx->channels == 1 &&
547 av_get_planar_sample_fmt(avctx->sample_fmt) ==
548 av_get_planar_sample_fmt(avctx->codec->sample_fmts[i])) {
549 avctx->sample_fmt = avctx->codec->sample_fmts[i];
553 if (avctx->codec->sample_fmts[i] == AV_SAMPLE_FMT_NONE) {
554 av_log(avctx, AV_LOG_ERROR, "Specified sample_fmt is not supported.\n");
555 ret = AVERROR(EINVAL);
559 if (avctx->codec->pix_fmts) {
560 for (i = 0; avctx->codec->pix_fmts[i] != AV_PIX_FMT_NONE; i++)
561 if (avctx->pix_fmt == avctx->codec->pix_fmts[i])
563 if (avctx->codec->pix_fmts[i] == AV_PIX_FMT_NONE) {
564 av_log(avctx, AV_LOG_ERROR, "Specified pix_fmt is not supported\n");
565 ret = AVERROR(EINVAL);
568 if (avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ420P ||
569 avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ422P ||
570 avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ440P ||
571 avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ444P)
572 avctx->color_range = AVCOL_RANGE_JPEG;
574 if (avctx->codec->supported_samplerates) {
575 for (i = 0; avctx->codec->supported_samplerates[i] != 0; i++)
576 if (avctx->sample_rate == avctx->codec->supported_samplerates[i])
578 if (avctx->codec->supported_samplerates[i] == 0) {
579 av_log(avctx, AV_LOG_ERROR, "Specified sample_rate is not supported\n");
580 ret = AVERROR(EINVAL);
584 if (avctx->codec->channel_layouts) {
585 if (!avctx->channel_layout) {
586 av_log(avctx, AV_LOG_WARNING, "channel_layout not specified\n");
588 for (i = 0; avctx->codec->channel_layouts[i] != 0; i++)
589 if (avctx->channel_layout == avctx->codec->channel_layouts[i])
591 if (avctx->codec->channel_layouts[i] == 0) {
592 av_log(avctx, AV_LOG_ERROR, "Specified channel_layout is not supported\n");
593 ret = AVERROR(EINVAL);
598 if (avctx->channel_layout && avctx->channels) {
599 if (av_get_channel_layout_nb_channels(avctx->channel_layout) != avctx->channels) {
600 av_log(avctx, AV_LOG_ERROR, "channel layout does not match number of channels\n");
601 ret = AVERROR(EINVAL);
604 } else if (avctx->channel_layout) {
605 avctx->channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
608 if (!avctx->rc_initial_buffer_occupancy)
609 avctx->rc_initial_buffer_occupancy = avctx->rc_buffer_size * 3 / 4;
611 if (avctx->ticks_per_frame &&
612 avctx->ticks_per_frame > INT_MAX / avctx->time_base.num) {
613 av_log(avctx, AV_LOG_ERROR,
614 "ticks_per_frame %d too large for the timebase %d/%d.",
615 avctx->ticks_per_frame,
616 avctx->time_base.num,
617 avctx->time_base.den);
621 if (avctx->hw_frames_ctx) {
622 AVHWFramesContext *frames_ctx = (AVHWFramesContext*)avctx->hw_frames_ctx->data;
623 if (frames_ctx->format != avctx->pix_fmt) {
624 av_log(avctx, AV_LOG_ERROR,
625 "Mismatching AVCodecContext.pix_fmt and AVHWFramesContext.format\n");
626 ret = AVERROR(EINVAL);
629 if (avctx->sw_pix_fmt != AV_PIX_FMT_NONE &&
630 avctx->sw_pix_fmt != frames_ctx->sw_format) {
631 av_log(avctx, AV_LOG_ERROR,
632 "Mismatching AVCodecContext.sw_pix_fmt (%s) "
633 "and AVHWFramesContext.sw_format (%s)\n",
634 av_get_pix_fmt_name(avctx->sw_pix_fmt),
635 av_get_pix_fmt_name(frames_ctx->sw_format));
636 ret = AVERROR(EINVAL);
639 avctx->sw_pix_fmt = frames_ctx->sw_format;
643 if (avctx->codec->init && !(avctx->active_thread_type & FF_THREAD_FRAME)) {
644 ret = avctx->codec->init(avctx);
650 if (av_codec_is_decoder(avctx->codec)) {
651 /* validate channel layout from the decoder */
652 if (avctx->channel_layout) {
653 int channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
654 if (!avctx->channels)
655 avctx->channels = channels;
656 else if (channels != avctx->channels) {
657 av_log(avctx, AV_LOG_WARNING,
658 "channel layout does not match number of channels\n");
659 avctx->channel_layout = 0;
662 if (avctx->channels && avctx->channels < 0 ||
663 avctx->channels > FF_SANE_NB_CHANNELS) {
664 ret = AVERROR(EINVAL);
669 if (!(codec->caps_internal & FF_CODEC_CAP_INIT_THREADSAFE) && codec->init) {
670 entangled_thread_counter--;
672 /* Release any user-supplied mutex. */
674 (*lockmgr_cb)(&codec_mutex, AV_LOCK_RELEASE);
679 av_dict_free(options);
686 (avctx->codec->caps_internal & FF_CODEC_CAP_INIT_CLEANUP))
687 avctx->codec->close(avctx);
689 if (avctx->priv_data && avctx->codec && avctx->codec->priv_class)
690 av_opt_free(avctx->priv_data);
693 #if FF_API_CODED_FRAME
694 FF_DISABLE_DEPRECATION_WARNINGS
695 av_frame_free(&avctx->coded_frame);
696 FF_ENABLE_DEPRECATION_WARNINGS
700 av_freep(&avctx->priv_data);
701 if (avctx->internal) {
702 av_frame_free(&avctx->internal->to_free);
703 av_frame_free(&avctx->internal->compat_decode_frame);
704 av_frame_free(&avctx->internal->buffer_frame);
705 av_packet_free(&avctx->internal->buffer_pkt);
706 av_packet_free(&avctx->internal->last_pkt_props);
708 av_packet_free(&avctx->internal->ds.in_pkt);
710 av_freep(&avctx->internal->pool);
712 av_freep(&avctx->internal);
717 void avsubtitle_free(AVSubtitle *sub)
721 for (i = 0; i < sub->num_rects; i++) {
722 av_freep(&sub->rects[i]->data[0]);
723 av_freep(&sub->rects[i]->data[1]);
724 av_freep(&sub->rects[i]->data[2]);
725 av_freep(&sub->rects[i]->data[3]);
726 av_freep(&sub->rects[i]->text);
727 av_freep(&sub->rects[i]->ass);
728 av_freep(&sub->rects[i]);
731 av_freep(&sub->rects);
733 memset(sub, 0, sizeof(AVSubtitle));
736 av_cold int avcodec_close(AVCodecContext *avctx)
740 if (avcodec_is_open(avctx)) {
741 FramePool *pool = avctx->internal->pool;
743 if (HAVE_THREADS && avctx->internal->thread_ctx)
744 ff_thread_free(avctx);
745 if (avctx->codec && avctx->codec->close)
746 avctx->codec->close(avctx);
747 av_frame_free(&avctx->internal->to_free);
748 av_frame_free(&avctx->internal->compat_decode_frame);
749 av_frame_free(&avctx->internal->buffer_frame);
750 av_packet_free(&avctx->internal->buffer_pkt);
751 av_packet_free(&avctx->internal->last_pkt_props);
753 av_packet_free(&avctx->internal->ds.in_pkt);
755 for (i = 0; i < FF_ARRAY_ELEMS(pool->pools); i++)
756 av_buffer_pool_uninit(&pool->pools[i]);
757 av_freep(&avctx->internal->pool);
759 if (avctx->hwaccel && avctx->hwaccel->uninit)
760 avctx->hwaccel->uninit(avctx);
761 av_freep(&avctx->internal->hwaccel_priv_data);
763 ff_decode_bsfs_uninit(avctx);
765 av_freep(&avctx->internal);
768 for (i = 0; i < avctx->nb_coded_side_data; i++)
769 av_freep(&avctx->coded_side_data[i].data);
770 av_freep(&avctx->coded_side_data);
771 avctx->nb_coded_side_data = 0;
773 av_buffer_unref(&avctx->hw_frames_ctx);
774 av_buffer_unref(&avctx->hw_device_ctx);
776 if (avctx->priv_data && avctx->codec && avctx->codec->priv_class)
777 av_opt_free(avctx->priv_data);
779 av_freep(&avctx->priv_data);
780 if (av_codec_is_encoder(avctx->codec)) {
781 av_freep(&avctx->extradata);
782 #if FF_API_CODED_FRAME
783 FF_DISABLE_DEPRECATION_WARNINGS
784 av_frame_free(&avctx->coded_frame);
785 FF_ENABLE_DEPRECATION_WARNINGS
789 avctx->active_thread_type = 0;
794 static AVCodec *find_encdec(enum AVCodecID id, int encoder)
796 AVCodec *p, *experimental = NULL;
799 if ((encoder ? av_codec_is_encoder(p) : av_codec_is_decoder(p)) &&
801 if (p->capabilities & AV_CODEC_CAP_EXPERIMENTAL && !experimental) {
811 AVCodec *avcodec_find_encoder(enum AVCodecID id)
813 return find_encdec(id, 1);
816 AVCodec *avcodec_find_encoder_by_name(const char *name)
823 if (av_codec_is_encoder(p) && strcmp(name, p->name) == 0)
830 AVCodec *avcodec_find_decoder(enum AVCodecID id)
832 return find_encdec(id, 0);
835 AVCodec *avcodec_find_decoder_by_name(const char *name)
842 if (av_codec_is_decoder(p) && strcmp(name, p->name) == 0)
849 static int get_bit_rate(AVCodecContext *ctx)
854 switch (ctx->codec_type) {
855 case AVMEDIA_TYPE_VIDEO:
856 case AVMEDIA_TYPE_DATA:
857 case AVMEDIA_TYPE_SUBTITLE:
858 case AVMEDIA_TYPE_ATTACHMENT:
859 bit_rate = ctx->bit_rate;
861 case AVMEDIA_TYPE_AUDIO:
862 bits_per_sample = av_get_bits_per_sample(ctx->codec_id);
863 bit_rate = bits_per_sample ? ctx->sample_rate * ctx->channels * bits_per_sample : ctx->bit_rate;
872 size_t av_get_codec_tag_string(char *buf, size_t buf_size, unsigned int codec_tag)
876 #define TAG_PRINT(x) \
877 (((x) >= '0' && (x) <= '9') || \
878 ((x) >= 'a' && (x) <= 'z') || ((x) >= 'A' && (x) <= 'Z') || \
879 ((x) == '.' || (x) == ' '))
881 for (i = 0; i < 4; i++) {
882 len = snprintf(buf, buf_size,
883 TAG_PRINT(codec_tag & 0xFF) ? "%c" : "[%d]", codec_tag & 0xFF);
885 buf_size = buf_size > len ? buf_size - len : 0;
892 void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)
894 const char *codec_name;
895 const char *profile = NULL;
899 AVRational display_aspect_ratio;
900 const AVCodecDescriptor *desc = avcodec_descriptor_get(enc->codec_id);
903 codec_name = desc->name;
904 profile = avcodec_profile_name(enc->codec_id, enc->profile);
905 } else if (enc->codec_id == AV_CODEC_ID_MPEG2TS) {
906 /* fake mpeg2 transport stream codec (currently not
908 codec_name = "mpeg2ts";
910 /* output avi tags */
912 av_get_codec_tag_string(tag_buf, sizeof(tag_buf), enc->codec_tag);
913 snprintf(buf1, sizeof(buf1), "%s / 0x%04X", tag_buf, enc->codec_tag);
917 switch (enc->codec_type) {
918 case AVMEDIA_TYPE_VIDEO:
919 snprintf(buf, buf_size,
921 codec_name, enc->mb_decision ? " (hq)" : "");
923 snprintf(buf + strlen(buf), buf_size - strlen(buf),
925 if (enc->codec_tag) {
927 av_get_codec_tag_string(tag_buf, sizeof(tag_buf), enc->codec_tag);
928 snprintf(buf + strlen(buf), buf_size - strlen(buf),
929 " [%s / 0x%04X]", tag_buf, enc->codec_tag);
932 av_strlcat(buf, "\n ", buf_size);
933 snprintf(buf + strlen(buf), buf_size - strlen(buf),
934 "%s", enc->pix_fmt == AV_PIX_FMT_NONE ? "none" :
935 av_get_pix_fmt_name(enc->pix_fmt));
937 if (enc->color_range != AVCOL_RANGE_UNSPECIFIED)
938 snprintf(buf + strlen(buf), buf_size - strlen(buf), ", %s",
939 av_color_range_name(enc->color_range));
940 if (enc->colorspace != AVCOL_SPC_UNSPECIFIED ||
941 enc->color_primaries != AVCOL_PRI_UNSPECIFIED ||
942 enc->color_trc != AVCOL_TRC_UNSPECIFIED) {
944 snprintf(buf + strlen(buf), buf_size - strlen(buf), ", %s/%s/%s",
945 av_color_space_name(enc->colorspace),
946 av_color_primaries_name(enc->color_primaries),
947 av_color_transfer_name(enc->color_trc));
949 if (av_log_get_level() >= AV_LOG_DEBUG &&
950 enc->chroma_sample_location != AVCHROMA_LOC_UNSPECIFIED)
951 snprintf(buf + strlen(buf), buf_size - strlen(buf), ", %s",
952 av_chroma_location_name(enc->chroma_sample_location));
955 av_strlcat(buf, new_line ? "\n " : ", ", buf_size);
957 snprintf(buf + strlen(buf), buf_size - strlen(buf),
959 enc->width, enc->height);
961 if (av_log_get_level() >= AV_LOG_VERBOSE &&
962 (enc->width != enc->coded_width ||
963 enc->height != enc->coded_height))
964 snprintf(buf + strlen(buf), buf_size - strlen(buf),
965 " (%dx%d)", enc->coded_width, enc->coded_height);
967 if (enc->sample_aspect_ratio.num) {
968 av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
969 enc->width * enc->sample_aspect_ratio.num,
970 enc->height * enc->sample_aspect_ratio.den,
972 snprintf(buf + strlen(buf), buf_size - strlen(buf),
973 " [PAR %d:%d DAR %d:%d]",
974 enc->sample_aspect_ratio.num, enc->sample_aspect_ratio.den,
975 display_aspect_ratio.num, display_aspect_ratio.den);
977 if (av_log_get_level() >= AV_LOG_DEBUG) {
978 int g = av_gcd(enc->time_base.num, enc->time_base.den);
979 snprintf(buf + strlen(buf), buf_size - strlen(buf),
981 enc->time_base.num / g, enc->time_base.den / g);
985 snprintf(buf + strlen(buf), buf_size - strlen(buf),
986 ", q=%d-%d", enc->qmin, enc->qmax);
989 case AVMEDIA_TYPE_AUDIO:
990 snprintf(buf, buf_size,
994 snprintf(buf + strlen(buf), buf_size - strlen(buf),
996 if (enc->codec_tag) {
998 av_get_codec_tag_string(tag_buf, sizeof(tag_buf), enc->codec_tag);
999 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1000 " [%s / 0x%04X]", tag_buf, enc->codec_tag);
1003 av_strlcat(buf, "\n ", buf_size);
1004 if (enc->sample_rate) {
1005 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1006 "%d Hz, ", enc->sample_rate);
1008 av_get_channel_layout_string(buf + strlen(buf), buf_size - strlen(buf), enc->channels, enc->channel_layout);
1009 if (enc->sample_fmt != AV_SAMPLE_FMT_NONE) {
1010 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1011 ", %s", av_get_sample_fmt_name(enc->sample_fmt));
1014 case AVMEDIA_TYPE_DATA:
1015 snprintf(buf, buf_size, "Data: %s", codec_name);
1017 case AVMEDIA_TYPE_SUBTITLE:
1018 snprintf(buf, buf_size, "Subtitle: %s", codec_name);
1020 case AVMEDIA_TYPE_ATTACHMENT:
1021 snprintf(buf, buf_size, "Attachment: %s", codec_name);
1024 snprintf(buf, buf_size, "Invalid Codec type %d", enc->codec_type);
1028 if (enc->flags & AV_CODEC_FLAG_PASS1)
1029 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1031 if (enc->flags & AV_CODEC_FLAG_PASS2)
1032 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1035 bitrate = get_bit_rate(enc);
1037 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1038 ", %d kb/s", bitrate / 1000);
1042 const char *av_get_profile_name(const AVCodec *codec, int profile)
1045 if (profile == FF_PROFILE_UNKNOWN || !codec->profiles)
1048 for (p = codec->profiles; p->profile != FF_PROFILE_UNKNOWN; p++)
1049 if (p->profile == profile)
1055 const char *avcodec_profile_name(enum AVCodecID codec_id, int profile)
1057 const AVCodecDescriptor *desc = avcodec_descriptor_get(codec_id);
1060 if (profile == FF_PROFILE_UNKNOWN || !desc || !desc->profiles)
1063 for (p = desc->profiles; p->profile != FF_PROFILE_UNKNOWN; p++)
1064 if (p->profile == profile)
1070 unsigned avcodec_version(void)
1072 return LIBAVCODEC_VERSION_INT;
1075 const char *avcodec_configuration(void)
1077 return LIBAV_CONFIGURATION;
1080 const char *avcodec_license(void)
1082 #define LICENSE_PREFIX "libavcodec license: "
1083 return LICENSE_PREFIX LIBAV_LICENSE + sizeof(LICENSE_PREFIX) - 1;
1086 int av_get_exact_bits_per_sample(enum AVCodecID codec_id)
1089 case AV_CODEC_ID_ADPCM_CT:
1090 case AV_CODEC_ID_ADPCM_IMA_APC:
1091 case AV_CODEC_ID_ADPCM_IMA_EA_SEAD:
1092 case AV_CODEC_ID_ADPCM_IMA_WS:
1093 case AV_CODEC_ID_ADPCM_G722:
1094 case AV_CODEC_ID_ADPCM_YAMAHA:
1096 case AV_CODEC_ID_PCM_ALAW:
1097 case AV_CODEC_ID_PCM_MULAW:
1098 case AV_CODEC_ID_PCM_S8:
1099 case AV_CODEC_ID_PCM_U8:
1100 case AV_CODEC_ID_PCM_ZORK:
1102 case AV_CODEC_ID_PCM_S16BE:
1103 case AV_CODEC_ID_PCM_S16BE_PLANAR:
1104 case AV_CODEC_ID_PCM_S16LE:
1105 case AV_CODEC_ID_PCM_S16LE_PLANAR:
1106 case AV_CODEC_ID_PCM_U16BE:
1107 case AV_CODEC_ID_PCM_U16LE:
1109 case AV_CODEC_ID_PCM_S24DAUD:
1110 case AV_CODEC_ID_PCM_S24BE:
1111 case AV_CODEC_ID_PCM_S24LE:
1112 case AV_CODEC_ID_PCM_S24LE_PLANAR:
1113 case AV_CODEC_ID_PCM_U24BE:
1114 case AV_CODEC_ID_PCM_U24LE:
1116 case AV_CODEC_ID_PCM_S32BE:
1117 case AV_CODEC_ID_PCM_S32LE:
1118 case AV_CODEC_ID_PCM_S32LE_PLANAR:
1119 case AV_CODEC_ID_PCM_U32BE:
1120 case AV_CODEC_ID_PCM_U32LE:
1121 case AV_CODEC_ID_PCM_F32BE:
1122 case AV_CODEC_ID_PCM_F32LE:
1124 case AV_CODEC_ID_PCM_F64BE:
1125 case AV_CODEC_ID_PCM_F64LE:
1132 int av_get_bits_per_sample(enum AVCodecID codec_id)
1135 case AV_CODEC_ID_ADPCM_SBPRO_2:
1137 case AV_CODEC_ID_ADPCM_SBPRO_3:
1139 case AV_CODEC_ID_ADPCM_SBPRO_4:
1140 case AV_CODEC_ID_ADPCM_IMA_WAV:
1141 case AV_CODEC_ID_ADPCM_IMA_QT:
1142 case AV_CODEC_ID_ADPCM_SWF:
1143 case AV_CODEC_ID_ADPCM_MS:
1146 return av_get_exact_bits_per_sample(codec_id);
1150 static int get_audio_frame_duration(enum AVCodecID id, int sr, int ch, int ba,
1151 uint32_t tag, int bits_per_coded_sample, int frame_bytes)
1153 int bps = av_get_exact_bits_per_sample(id);
1155 /* codecs with an exact constant bits per sample */
1156 if (bps > 0 && ch > 0 && frame_bytes > 0)
1157 return (frame_bytes * 8) / (bps * ch);
1158 bps = bits_per_coded_sample;
1160 /* codecs with a fixed packet duration */
1162 case AV_CODEC_ID_ADPCM_ADX: return 32;
1163 case AV_CODEC_ID_ADPCM_IMA_QT: return 64;
1164 case AV_CODEC_ID_ADPCM_EA_XAS: return 128;
1165 case AV_CODEC_ID_AMR_NB:
1166 case AV_CODEC_ID_GSM:
1167 case AV_CODEC_ID_QCELP:
1168 case AV_CODEC_ID_RA_144:
1169 case AV_CODEC_ID_RA_288: return 160;
1170 case AV_CODEC_ID_IMC: return 256;
1171 case AV_CODEC_ID_AMR_WB:
1172 case AV_CODEC_ID_GSM_MS: return 320;
1173 case AV_CODEC_ID_MP1: return 384;
1174 case AV_CODEC_ID_ATRAC1: return 512;
1175 case AV_CODEC_ID_ATRAC3: return 1024;
1176 case AV_CODEC_ID_MP2:
1177 case AV_CODEC_ID_MUSEPACK7: return 1152;
1178 case AV_CODEC_ID_AC3: return 1536;
1182 /* calc from sample rate */
1183 if (id == AV_CODEC_ID_TTA)
1184 return 256 * sr / 245;
1187 /* calc from sample rate and channels */
1188 if (id == AV_CODEC_ID_BINKAUDIO_DCT)
1189 return (480 << (sr / 22050)) / ch;
1192 if (id == AV_CODEC_ID_MP3)
1193 return sr <= 24000 ? 576 : 1152;
1197 /* calc from block_align */
1198 if (id == AV_CODEC_ID_SIPR) {
1200 case 20: return 160;
1201 case 19: return 144;
1202 case 29: return 288;
1203 case 37: return 480;
1205 } else if (id == AV_CODEC_ID_ILBC) {
1207 case 38: return 160;
1208 case 50: return 240;
1213 if (frame_bytes > 0) {
1214 /* calc from frame_bytes only */
1215 if (id == AV_CODEC_ID_TRUESPEECH)
1216 return 240 * (frame_bytes / 32);
1217 if (id == AV_CODEC_ID_NELLYMOSER)
1218 return 256 * (frame_bytes / 64);
1221 /* calc from frame_bytes and bits_per_coded_sample */
1222 if (id == AV_CODEC_ID_ADPCM_G726)
1223 return frame_bytes * 8 / bps;
1227 /* calc from frame_bytes and channels */
1229 case AV_CODEC_ID_ADPCM_4XM:
1230 case AV_CODEC_ID_ADPCM_IMA_ISS:
1231 return (frame_bytes - 4 * ch) * 2 / ch;
1232 case AV_CODEC_ID_ADPCM_IMA_SMJPEG:
1233 return (frame_bytes - 4) * 2 / ch;
1234 case AV_CODEC_ID_ADPCM_IMA_AMV:
1235 return (frame_bytes - 8) * 2 / ch;
1236 case AV_CODEC_ID_ADPCM_XA:
1237 return (frame_bytes / 128) * 224 / ch;
1238 case AV_CODEC_ID_INTERPLAY_DPCM:
1239 return (frame_bytes - 6 - ch) / ch;
1240 case AV_CODEC_ID_ROQ_DPCM:
1241 return (frame_bytes - 8) / ch;
1242 case AV_CODEC_ID_XAN_DPCM:
1243 return (frame_bytes - 2 * ch) / ch;
1244 case AV_CODEC_ID_MACE3:
1245 return 3 * frame_bytes / ch;
1246 case AV_CODEC_ID_MACE6:
1247 return 6 * frame_bytes / ch;
1248 case AV_CODEC_ID_PCM_LXF:
1249 return 2 * (frame_bytes / (5 * ch));
1253 /* calc from frame_bytes, channels, and codec_tag */
1254 if (id == AV_CODEC_ID_SOL_DPCM) {
1256 return frame_bytes / ch;
1258 return frame_bytes * 2 / ch;
1263 /* calc from frame_bytes, channels, and block_align */
1264 int blocks = frame_bytes / ba;
1266 case AV_CODEC_ID_ADPCM_IMA_WAV:
1267 return blocks * (1 + (ba - 4 * ch) / (4 * ch) * 8);
1268 case AV_CODEC_ID_ADPCM_IMA_DK3:
1269 return blocks * (((ba - 16) * 2 / 3 * 4) / ch);
1270 case AV_CODEC_ID_ADPCM_IMA_DK4:
1271 return blocks * (1 + (ba - 4 * ch) * 2 / ch);
1272 case AV_CODEC_ID_ADPCM_MS:
1273 return blocks * (2 + (ba - 7 * ch) * 2 / ch);
1278 /* calc from frame_bytes, channels, and bits_per_coded_sample */
1280 case AV_CODEC_ID_PCM_DVD:
1281 return 2 * (frame_bytes / ((bps * 2 / 8) * ch));
1282 case AV_CODEC_ID_PCM_BLURAY:
1283 return frame_bytes / ((FFALIGN(ch, 2) * bps) / 8);
1284 case AV_CODEC_ID_S302M:
1285 return 2 * (frame_bytes / ((bps + 4) / 4)) / ch;
1294 int av_get_audio_frame_duration(AVCodecContext *avctx, int frame_bytes)
1296 return get_audio_frame_duration(avctx->codec_id, avctx->sample_rate,
1297 avctx->channels, avctx->block_align,
1298 avctx->codec_tag, avctx->bits_per_coded_sample,
1302 int av_get_audio_frame_duration2(AVCodecParameters *par, int frame_bytes)
1304 return get_audio_frame_duration(par->codec_id, par->sample_rate,
1305 par->channels, par->block_align,
1306 par->codec_tag, par->bits_per_coded_sample,
1311 int ff_thread_init(AVCodecContext *s)
1318 unsigned int av_xiphlacing(unsigned char *s, unsigned int v)
1332 int ff_match_2uint16(const uint16_t(*tab)[2], int size, int a, int b)
1335 for (i = 0; i < size && !(tab[i][0] == a && tab[i][1] == b); i++) ;
1339 const AVCodecHWConfig *avcodec_get_hw_config(const AVCodec *codec, int index)
1342 if (!codec->hw_configs || index < 0)
1344 for (i = 0; i <= index; i++)
1345 if (!codec->hw_configs[i])
1347 return &codec->hw_configs[index]->public;
1350 #if FF_API_USER_VISIBLE_AVHWACCEL
1351 AVHWAccel *av_hwaccel_next(const AVHWAccel *hwaccel)
1356 void av_register_hwaccel(AVHWAccel *hwaccel)
1361 int av_lockmgr_register(int (*cb)(void **mutex, enum AVLockOp op))
1364 // There is no good way to rollback a failure to destroy the
1365 // mutex, so we ignore failures.
1366 lockmgr_cb(&codec_mutex, AV_LOCK_DESTROY);
1367 lockmgr_cb(&avformat_mutex, AV_LOCK_DESTROY);
1370 avformat_mutex = NULL;
1374 void *new_codec_mutex = NULL;
1375 void *new_avformat_mutex = NULL;
1377 if (err = cb(&new_codec_mutex, AV_LOCK_CREATE)) {
1378 return err > 0 ? AVERROR_UNKNOWN : err;
1380 if (err = cb(&new_avformat_mutex, AV_LOCK_CREATE)) {
1381 // Ignore failures to destroy the newly created mutex.
1382 cb(&new_codec_mutex, AV_LOCK_DESTROY);
1383 return err > 0 ? AVERROR_UNKNOWN : err;
1386 codec_mutex = new_codec_mutex;
1387 avformat_mutex = new_avformat_mutex;
1393 int avpriv_lock_avformat(void)
1396 if ((*lockmgr_cb)(&avformat_mutex, AV_LOCK_OBTAIN))
1402 int avpriv_unlock_avformat(void)
1405 if ((*lockmgr_cb)(&avformat_mutex, AV_LOCK_RELEASE))
1411 unsigned int avpriv_toupper4(unsigned int x)
1413 return av_toupper(x & 0xFF) +
1414 (av_toupper((x >> 8) & 0xFF) << 8) +
1415 (av_toupper((x >> 16) & 0xFF) << 16) +
1416 (av_toupper((x >> 24) & 0xFF) << 24);
1419 int ff_thread_ref_frame(ThreadFrame *dst, ThreadFrame *src)
1423 dst->owner = src->owner;
1425 ret = av_frame_ref(dst->f, src->f);
1429 if (src->progress &&
1430 !(dst->progress = av_buffer_ref(src->progress))) {
1431 ff_thread_release_buffer(dst->owner, dst);
1432 return AVERROR(ENOMEM);
1440 int ff_thread_get_buffer(AVCodecContext *avctx, ThreadFrame *f, int flags)
1443 return ff_get_buffer(avctx, f->f, flags);
1446 void ff_thread_release_buffer(AVCodecContext *avctx, ThreadFrame *f)
1449 av_frame_unref(f->f);
1452 void ff_thread_finish_setup(AVCodecContext *avctx)
1456 void ff_thread_report_progress(ThreadFrame *f, int progress, int field)
1460 void ff_thread_await_progress(ThreadFrame *f, int progress, int field)
1466 int avcodec_is_open(AVCodecContext *s)
1468 return !!s->internal;
1471 const uint8_t *avpriv_find_start_code(const uint8_t *restrict p,
1473 uint32_t * restrict state)
1481 for (i = 0; i < 3; i++) {
1482 uint32_t tmp = *state << 8;
1483 *state = tmp + *(p++);
1484 if (tmp == 0x100 || p == end)
1489 if (p[-1] > 1 ) p += 3;
1490 else if (p[-2] ) p += 2;
1491 else if (p[-3]|(p[-1]-1)) p++;
1498 p = FFMIN(p, end) - 4;
1499 *state = AV_RB32(p);
1504 AVCPBProperties *av_cpb_properties_alloc(size_t *size)
1506 AVCPBProperties *props = av_mallocz(sizeof(AVCPBProperties));
1511 *size = sizeof(*props);
1513 props->vbv_delay = UINT64_MAX;
1518 AVCPBProperties *ff_add_cpb_side_data(AVCodecContext *avctx)
1520 AVPacketSideData *tmp;
1521 AVCPBProperties *props;
1524 props = av_cpb_properties_alloc(&size);
1528 tmp = av_realloc_array(avctx->coded_side_data, avctx->nb_coded_side_data + 1, sizeof(*tmp));
1534 avctx->coded_side_data = tmp;
1535 avctx->nb_coded_side_data++;
1537 avctx->coded_side_data[avctx->nb_coded_side_data - 1].type = AV_PKT_DATA_CPB_PROPERTIES;
1538 avctx->coded_side_data[avctx->nb_coded_side_data - 1].data = (uint8_t*)props;
1539 avctx->coded_side_data[avctx->nb_coded_side_data - 1].size = size;
1544 static void codec_parameters_reset(AVCodecParameters *par)
1546 av_freep(&par->extradata);
1548 memset(par, 0, sizeof(*par));
1550 par->codec_type = AVMEDIA_TYPE_UNKNOWN;
1551 par->codec_id = AV_CODEC_ID_NONE;
1553 par->field_order = AV_FIELD_UNKNOWN;
1554 par->color_range = AVCOL_RANGE_UNSPECIFIED;
1555 par->color_primaries = AVCOL_PRI_UNSPECIFIED;
1556 par->color_trc = AVCOL_TRC_UNSPECIFIED;
1557 par->color_space = AVCOL_SPC_UNSPECIFIED;
1558 par->chroma_location = AVCHROMA_LOC_UNSPECIFIED;
1559 par->sample_aspect_ratio = (AVRational){ 0, 1 };
1562 AVCodecParameters *avcodec_parameters_alloc(void)
1564 AVCodecParameters *par = av_mallocz(sizeof(*par));
1568 codec_parameters_reset(par);
1572 void avcodec_parameters_free(AVCodecParameters **ppar)
1574 AVCodecParameters *par = *ppar;
1578 codec_parameters_reset(par);
1583 int avcodec_parameters_copy(AVCodecParameters *dst, const AVCodecParameters *src)
1585 codec_parameters_reset(dst);
1586 memcpy(dst, src, sizeof(*dst));
1588 dst->extradata = NULL;
1589 dst->extradata_size = 0;
1590 if (src->extradata) {
1591 dst->extradata = av_mallocz(src->extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);
1592 if (!dst->extradata)
1593 return AVERROR(ENOMEM);
1594 memcpy(dst->extradata, src->extradata, src->extradata_size);
1595 dst->extradata_size = src->extradata_size;
1601 int avcodec_parameters_from_context(AVCodecParameters *par,
1602 const AVCodecContext *codec)
1604 codec_parameters_reset(par);
1606 par->codec_type = codec->codec_type;
1607 par->codec_id = codec->codec_id;
1608 par->codec_tag = codec->codec_tag;
1610 par->bit_rate = codec->bit_rate;
1611 par->bits_per_coded_sample = codec->bits_per_coded_sample;
1612 par->profile = codec->profile;
1613 par->level = codec->level;
1615 switch (par->codec_type) {
1616 case AVMEDIA_TYPE_VIDEO:
1617 par->format = codec->pix_fmt;
1618 par->width = codec->width;
1619 par->height = codec->height;
1620 par->field_order = codec->field_order;
1621 par->color_range = codec->color_range;
1622 par->color_primaries = codec->color_primaries;
1623 par->color_trc = codec->color_trc;
1624 par->color_space = codec->colorspace;
1625 par->chroma_location = codec->chroma_sample_location;
1626 par->sample_aspect_ratio = codec->sample_aspect_ratio;
1628 case AVMEDIA_TYPE_AUDIO:
1629 par->format = codec->sample_fmt;
1630 par->channel_layout = codec->channel_layout;
1631 par->channels = codec->channels;
1632 par->sample_rate = codec->sample_rate;
1633 par->block_align = codec->block_align;
1634 par->initial_padding = codec->initial_padding;
1638 if (codec->extradata) {
1639 par->extradata = av_mallocz(codec->extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);
1640 if (!par->extradata)
1641 return AVERROR(ENOMEM);
1642 memcpy(par->extradata, codec->extradata, codec->extradata_size);
1643 par->extradata_size = codec->extradata_size;
1649 int avcodec_parameters_to_context(AVCodecContext *codec,
1650 const AVCodecParameters *par)
1652 codec->codec_type = par->codec_type;
1653 codec->codec_id = par->codec_id;
1654 codec->codec_tag = par->codec_tag;
1656 codec->bit_rate = par->bit_rate;
1657 codec->bits_per_coded_sample = par->bits_per_coded_sample;
1658 codec->profile = par->profile;
1659 codec->level = par->level;
1661 switch (par->codec_type) {
1662 case AVMEDIA_TYPE_VIDEO:
1663 codec->pix_fmt = par->format;
1664 codec->width = par->width;
1665 codec->height = par->height;
1666 codec->field_order = par->field_order;
1667 codec->color_range = par->color_range;
1668 codec->color_primaries = par->color_primaries;
1669 codec->color_trc = par->color_trc;
1670 codec->colorspace = par->color_space;
1671 codec->chroma_sample_location = par->chroma_location;
1672 codec->sample_aspect_ratio = par->sample_aspect_ratio;
1674 case AVMEDIA_TYPE_AUDIO:
1675 codec->sample_fmt = par->format;
1676 codec->channel_layout = par->channel_layout;
1677 codec->channels = par->channels;
1678 codec->sample_rate = par->sample_rate;
1679 codec->block_align = par->block_align;
1680 codec->initial_padding = par->initial_padding;
1684 if (par->extradata) {
1685 av_freep(&codec->extradata);
1686 codec->extradata = av_mallocz(par->extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);
1687 if (!codec->extradata)
1688 return AVERROR(ENOMEM);
1689 memcpy(codec->extradata, par->extradata, par->extradata_size);
1690 codec->extradata_size = par->extradata_size;