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 #if FF_API_SET_DIMENSIONS
129 void avcodec_set_dimensions(AVCodecContext *s, int width, int height)
131 ff_set_dimensions(s, width, height);
135 int ff_set_dimensions(AVCodecContext *s, int width, int height)
137 int ret = av_image_check_size(width, height, 0, s);
141 s->width = s->coded_width = width;
142 s->height = s->coded_height = height;
147 int ff_set_sar(AVCodecContext *avctx, AVRational sar)
149 int ret = av_image_check_sar(avctx->width, avctx->height, sar);
152 av_log(avctx, AV_LOG_WARNING, "ignoring invalid SAR: %d/%d\n",
154 avctx->sample_aspect_ratio = (AVRational){ 0, 1 };
157 avctx->sample_aspect_ratio = sar;
162 int ff_side_data_update_matrix_encoding(AVFrame *frame,
163 enum AVMatrixEncoding matrix_encoding)
165 AVFrameSideData *side_data;
166 enum AVMatrixEncoding *data;
168 side_data = av_frame_get_side_data(frame, AV_FRAME_DATA_MATRIXENCODING);
170 side_data = av_frame_new_side_data(frame, AV_FRAME_DATA_MATRIXENCODING,
171 sizeof(enum AVMatrixEncoding));
174 return AVERROR(ENOMEM);
176 data = (enum AVMatrixEncoding*)side_data->data;
177 *data = matrix_encoding;
182 #if HAVE_SIMD_ALIGN_32
183 # define STRIDE_ALIGN 32
184 #elif HAVE_SIMD_ALIGN_16
185 # define STRIDE_ALIGN 16
187 # define STRIDE_ALIGN 8
190 void avcodec_align_dimensions2(AVCodecContext *s, int *width, int *height,
191 int linesize_align[AV_NUM_DATA_POINTERS])
197 switch (s->pix_fmt) {
198 case AV_PIX_FMT_YUV420P:
199 case AV_PIX_FMT_YUYV422:
200 case AV_PIX_FMT_YVYU422:
201 case AV_PIX_FMT_UYVY422:
202 case AV_PIX_FMT_YUV422P:
203 case AV_PIX_FMT_YUV440P:
204 case AV_PIX_FMT_YUV444P:
205 case AV_PIX_FMT_GBRP:
206 case AV_PIX_FMT_GBRAP:
207 case AV_PIX_FMT_GRAY8:
208 case AV_PIX_FMT_GRAY16BE:
209 case AV_PIX_FMT_GRAY16LE:
210 case AV_PIX_FMT_YUVJ420P:
211 case AV_PIX_FMT_YUVJ422P:
212 case AV_PIX_FMT_YUVJ440P:
213 case AV_PIX_FMT_YUVJ444P:
214 case AV_PIX_FMT_YUVA420P:
215 case AV_PIX_FMT_YUVA422P:
216 case AV_PIX_FMT_YUVA444P:
217 case AV_PIX_FMT_YUV420P9LE:
218 case AV_PIX_FMT_YUV420P9BE:
219 case AV_PIX_FMT_YUV420P10LE:
220 case AV_PIX_FMT_YUV420P10BE:
221 case AV_PIX_FMT_YUV422P9LE:
222 case AV_PIX_FMT_YUV422P9BE:
223 case AV_PIX_FMT_YUV422P10LE:
224 case AV_PIX_FMT_YUV422P10BE:
225 case AV_PIX_FMT_YUVA422P10LE:
226 case AV_PIX_FMT_YUVA422P10BE:
227 case AV_PIX_FMT_YUV444P9LE:
228 case AV_PIX_FMT_YUV444P9BE:
229 case AV_PIX_FMT_YUV444P10LE:
230 case AV_PIX_FMT_YUV444P10BE:
231 case AV_PIX_FMT_YUVA444P10LE:
232 case AV_PIX_FMT_YUVA444P10BE:
233 case AV_PIX_FMT_GBRP9LE:
234 case AV_PIX_FMT_GBRP9BE:
235 case AV_PIX_FMT_GBRP10LE:
236 case AV_PIX_FMT_GBRP10BE:
237 case AV_PIX_FMT_GBRAP12LE:
238 case AV_PIX_FMT_GBRAP12BE:
239 w_align = 16; //FIXME assume 16 pixel per macroblock
240 h_align = 16 * 2; // interlaced needs 2 macroblocks height
242 case AV_PIX_FMT_YUV411P:
243 case AV_PIX_FMT_UYYVYY411:
247 case AV_PIX_FMT_YUV410P:
248 if (s->codec_id == AV_CODEC_ID_SVQ1) {
252 case AV_PIX_FMT_RGB555:
253 if (s->codec_id == AV_CODEC_ID_RPZA) {
257 case AV_PIX_FMT_PAL8:
258 case AV_PIX_FMT_BGR8:
259 case AV_PIX_FMT_RGB8:
260 if (s->codec_id == AV_CODEC_ID_SMC) {
265 case AV_PIX_FMT_BGR24:
266 if ((s->codec_id == AV_CODEC_ID_MSZH) ||
267 (s->codec_id == AV_CODEC_ID_ZLIB)) {
278 *width = FFALIGN(*width, w_align);
279 *height = FFALIGN(*height, h_align);
280 if (s->codec_id == AV_CODEC_ID_H264)
281 // some of the optimized chroma MC reads one line too much
284 for (i = 0; i < 4; i++)
285 linesize_align[i] = STRIDE_ALIGN;
288 void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height)
290 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(s->pix_fmt);
291 int chroma_shift = desc->log2_chroma_w;
292 int linesize_align[AV_NUM_DATA_POINTERS];
295 avcodec_align_dimensions2(s, width, height, linesize_align);
296 align = FFMAX(linesize_align[0], linesize_align[3]);
297 linesize_align[1] <<= chroma_shift;
298 linesize_align[2] <<= chroma_shift;
299 align = FFMAX3(align, linesize_align[1], linesize_align[2]);
300 *width = FFALIGN(*width, align);
303 int avcodec_fill_audio_frame(AVFrame *frame, int nb_channels,
304 enum AVSampleFormat sample_fmt, const uint8_t *buf,
305 int buf_size, int align)
307 int ch, planar, needed_size, ret = 0;
309 needed_size = av_samples_get_buffer_size(NULL, nb_channels,
310 frame->nb_samples, sample_fmt,
312 if (buf_size < needed_size)
313 return AVERROR(EINVAL);
315 planar = av_sample_fmt_is_planar(sample_fmt);
316 if (planar && nb_channels > AV_NUM_DATA_POINTERS) {
317 if (!(frame->extended_data = av_mallocz(nb_channels *
318 sizeof(*frame->extended_data))))
319 return AVERROR(ENOMEM);
321 frame->extended_data = frame->data;
324 if ((ret = av_samples_fill_arrays(frame->extended_data, &frame->linesize[0],
325 buf, nb_channels, frame->nb_samples,
326 sample_fmt, align)) < 0) {
327 if (frame->extended_data != frame->data)
328 av_free(frame->extended_data);
331 if (frame->extended_data != frame->data) {
332 for (ch = 0; ch < AV_NUM_DATA_POINTERS; ch++)
333 frame->data[ch] = frame->extended_data[ch];
339 int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2), void *arg, int *ret, int count, int size)
343 for (i = 0; i < count; i++) {
344 int r = func(c, (char *)arg + i * size);
351 int avcodec_default_execute2(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2, int jobnr, int threadnr), void *arg, int *ret, int count)
355 for (i = 0; i < count; i++) {
356 int r = func(c, arg, i, 0);
363 int attribute_align_arg avcodec_open2(AVCodecContext *avctx, const AVCodec *codec, AVDictionary **options)
366 AVDictionary *tmp = NULL;
368 if (avcodec_is_open(avctx))
371 if ((!codec && !avctx->codec)) {
372 av_log(avctx, AV_LOG_ERROR, "No codec provided to avcodec_open2().\n");
373 return AVERROR(EINVAL);
375 if ((codec && avctx->codec && codec != avctx->codec)) {
376 av_log(avctx, AV_LOG_ERROR, "This AVCodecContext was allocated for %s, "
377 "but %s passed to avcodec_open2().\n", avctx->codec->name, codec->name);
378 return AVERROR(EINVAL);
381 codec = avctx->codec;
383 if (avctx->extradata_size < 0 || avctx->extradata_size >= FF_MAX_EXTRADATA_SIZE)
384 return AVERROR(EINVAL);
387 av_dict_copy(&tmp, *options, 0);
389 /* If there is a user-supplied mutex locking routine, call it. */
390 if (!(codec->caps_internal & FF_CODEC_CAP_INIT_THREADSAFE) && codec->init) {
392 if ((*lockmgr_cb)(&codec_mutex, AV_LOCK_OBTAIN))
396 entangled_thread_counter++;
397 if (entangled_thread_counter != 1) {
398 av_log(avctx, AV_LOG_ERROR,
399 "Insufficient thread locking. At least %d threads are "
400 "calling avcodec_open2() at the same time right now.\n",
401 entangled_thread_counter);
407 avctx->internal = av_mallocz(sizeof(AVCodecInternal));
408 if (!avctx->internal) {
409 ret = AVERROR(ENOMEM);
413 avctx->internal->pool = av_mallocz(sizeof(*avctx->internal->pool));
414 if (!avctx->internal->pool) {
415 ret = AVERROR(ENOMEM);
419 avctx->internal->to_free = av_frame_alloc();
420 if (!avctx->internal->to_free) {
421 ret = AVERROR(ENOMEM);
425 avctx->internal->compat_decode_frame = av_frame_alloc();
426 if (!avctx->internal->compat_decode_frame) {
427 ret = AVERROR(ENOMEM);
431 avctx->internal->buffer_frame = av_frame_alloc();
432 if (!avctx->internal->buffer_frame) {
433 ret = AVERROR(ENOMEM);
437 avctx->internal->buffer_pkt = av_packet_alloc();
438 if (!avctx->internal->buffer_pkt) {
439 ret = AVERROR(ENOMEM);
443 avctx->internal->ds.in_pkt = av_packet_alloc();
444 if (!avctx->internal->ds.in_pkt) {
445 ret = AVERROR(ENOMEM);
449 avctx->internal->last_pkt_props = av_packet_alloc();
450 if (!avctx->internal->last_pkt_props) {
451 ret = AVERROR(ENOMEM);
455 if (codec->priv_data_size > 0) {
456 if (!avctx->priv_data) {
457 avctx->priv_data = av_mallocz(codec->priv_data_size);
458 if (!avctx->priv_data) {
459 ret = AVERROR(ENOMEM);
462 if (codec->priv_class) {
463 *(const AVClass **)avctx->priv_data = codec->priv_class;
464 av_opt_set_defaults(avctx->priv_data);
467 if (codec->priv_class && (ret = av_opt_set_dict(avctx->priv_data, &tmp)) < 0)
470 avctx->priv_data = NULL;
472 if ((ret = av_opt_set_dict(avctx, &tmp)) < 0)
475 if (avctx->coded_width && avctx->coded_height && !avctx->width && !avctx->height)
476 ret = ff_set_dimensions(avctx, avctx->coded_width, avctx->coded_height);
477 else if (avctx->width && avctx->height)
478 ret = ff_set_dimensions(avctx, avctx->width, avctx->height);
482 if ((avctx->coded_width || avctx->coded_height || avctx->width || avctx->height)
483 && ( av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx) < 0
484 || av_image_check_size(avctx->width, avctx->height, 0, avctx) < 0)) {
485 av_log(avctx, AV_LOG_WARNING, "ignoring invalid width/height values\n");
486 ff_set_dimensions(avctx, 0, 0);
489 if (avctx->width > 0 && avctx->height > 0) {
490 if (av_image_check_sar(avctx->width, avctx->height,
491 avctx->sample_aspect_ratio) < 0) {
492 av_log(avctx, AV_LOG_WARNING, "ignoring invalid SAR: %u/%u\n",
493 avctx->sample_aspect_ratio.num,
494 avctx->sample_aspect_ratio.den);
495 avctx->sample_aspect_ratio = (AVRational){ 0, 1 };
499 /* if the decoder init function was already called previously,
500 * free the already allocated subtitle_header before overwriting it */
501 if (av_codec_is_decoder(codec))
502 av_freep(&avctx->subtitle_header);
504 if (avctx->channels > FF_SANE_NB_CHANNELS) {
505 ret = AVERROR(EINVAL);
509 avctx->codec = codec;
510 if ((avctx->codec_type == AVMEDIA_TYPE_UNKNOWN || avctx->codec_type == codec->type) &&
511 avctx->codec_id == AV_CODEC_ID_NONE) {
512 avctx->codec_type = codec->type;
513 avctx->codec_id = codec->id;
515 if (avctx->codec_id != codec->id || (avctx->codec_type != codec->type
516 && avctx->codec_type != AVMEDIA_TYPE_ATTACHMENT)) {
517 av_log(avctx, AV_LOG_ERROR, "codec type or id mismatches\n");
518 ret = AVERROR(EINVAL);
521 avctx->frame_number = 0;
523 if ((avctx->codec->capabilities & AV_CODEC_CAP_EXPERIMENTAL) &&
524 avctx->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
525 ret = AVERROR_EXPERIMENTAL;
529 if (avctx->codec_type == AVMEDIA_TYPE_AUDIO &&
530 (!avctx->time_base.num || !avctx->time_base.den)) {
531 avctx->time_base.num = 1;
532 avctx->time_base.den = avctx->sample_rate;
536 ret = ff_thread_init(avctx);
541 if (!HAVE_THREADS && !(codec->capabilities & AV_CODEC_CAP_AUTO_THREADS))
542 avctx->thread_count = 1;
544 if (av_codec_is_encoder(avctx->codec)) {
546 #if FF_API_CODED_FRAME
547 FF_DISABLE_DEPRECATION_WARNINGS
548 avctx->coded_frame = av_frame_alloc();
549 if (!avctx->coded_frame) {
550 ret = AVERROR(ENOMEM);
553 FF_ENABLE_DEPRECATION_WARNINGS
556 if (avctx->time_base.num <= 0 || avctx->time_base.den <= 0) {
557 av_log(avctx, AV_LOG_ERROR, "The encoder timebase is not set.\n");
558 ret = AVERROR(EINVAL);
562 if (avctx->codec->sample_fmts) {
563 for (i = 0; avctx->codec->sample_fmts[i] != AV_SAMPLE_FMT_NONE; i++) {
564 if (avctx->sample_fmt == avctx->codec->sample_fmts[i])
566 if (avctx->channels == 1 &&
567 av_get_planar_sample_fmt(avctx->sample_fmt) ==
568 av_get_planar_sample_fmt(avctx->codec->sample_fmts[i])) {
569 avctx->sample_fmt = avctx->codec->sample_fmts[i];
573 if (avctx->codec->sample_fmts[i] == AV_SAMPLE_FMT_NONE) {
574 av_log(avctx, AV_LOG_ERROR, "Specified sample_fmt is not supported.\n");
575 ret = AVERROR(EINVAL);
579 if (avctx->codec->pix_fmts) {
580 for (i = 0; avctx->codec->pix_fmts[i] != AV_PIX_FMT_NONE; i++)
581 if (avctx->pix_fmt == avctx->codec->pix_fmts[i])
583 if (avctx->codec->pix_fmts[i] == AV_PIX_FMT_NONE) {
584 av_log(avctx, AV_LOG_ERROR, "Specified pix_fmt is not supported\n");
585 ret = AVERROR(EINVAL);
588 if (avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ420P ||
589 avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ422P ||
590 avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ440P ||
591 avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ444P)
592 avctx->color_range = AVCOL_RANGE_JPEG;
594 if (avctx->codec->supported_samplerates) {
595 for (i = 0; avctx->codec->supported_samplerates[i] != 0; i++)
596 if (avctx->sample_rate == avctx->codec->supported_samplerates[i])
598 if (avctx->codec->supported_samplerates[i] == 0) {
599 av_log(avctx, AV_LOG_ERROR, "Specified sample_rate is not supported\n");
600 ret = AVERROR(EINVAL);
604 if (avctx->codec->channel_layouts) {
605 if (!avctx->channel_layout) {
606 av_log(avctx, AV_LOG_WARNING, "channel_layout not specified\n");
608 for (i = 0; avctx->codec->channel_layouts[i] != 0; i++)
609 if (avctx->channel_layout == avctx->codec->channel_layouts[i])
611 if (avctx->codec->channel_layouts[i] == 0) {
612 av_log(avctx, AV_LOG_ERROR, "Specified channel_layout is not supported\n");
613 ret = AVERROR(EINVAL);
618 if (avctx->channel_layout && avctx->channels) {
619 if (av_get_channel_layout_nb_channels(avctx->channel_layout) != avctx->channels) {
620 av_log(avctx, AV_LOG_ERROR, "channel layout does not match number of channels\n");
621 ret = AVERROR(EINVAL);
624 } else if (avctx->channel_layout) {
625 avctx->channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
628 if (!avctx->rc_initial_buffer_occupancy)
629 avctx->rc_initial_buffer_occupancy = avctx->rc_buffer_size * 3 / 4;
631 if (avctx->ticks_per_frame &&
632 avctx->ticks_per_frame > INT_MAX / avctx->time_base.num) {
633 av_log(avctx, AV_LOG_ERROR,
634 "ticks_per_frame %d too large for the timebase %d/%d.",
635 avctx->ticks_per_frame,
636 avctx->time_base.num,
637 avctx->time_base.den);
641 if (avctx->hw_frames_ctx) {
642 AVHWFramesContext *frames_ctx = (AVHWFramesContext*)avctx->hw_frames_ctx->data;
643 if (frames_ctx->format != avctx->pix_fmt) {
644 av_log(avctx, AV_LOG_ERROR,
645 "Mismatching AVCodecContext.pix_fmt and AVHWFramesContext.format\n");
646 ret = AVERROR(EINVAL);
649 if (avctx->sw_pix_fmt != AV_PIX_FMT_NONE &&
650 avctx->sw_pix_fmt != frames_ctx->sw_format) {
651 av_log(avctx, AV_LOG_ERROR,
652 "Mismatching AVCodecContext.sw_pix_fmt (%s) "
653 "and AVHWFramesContext.sw_format (%s)\n",
654 av_get_pix_fmt_name(avctx->sw_pix_fmt),
655 av_get_pix_fmt_name(frames_ctx->sw_format));
656 ret = AVERROR(EINVAL);
659 avctx->sw_pix_fmt = frames_ctx->sw_format;
663 if (avctx->codec->init && !(avctx->active_thread_type & FF_THREAD_FRAME)) {
664 ret = avctx->codec->init(avctx);
670 #if FF_API_AUDIOENC_DELAY
671 if (av_codec_is_encoder(avctx->codec))
672 avctx->delay = avctx->initial_padding;
675 if (av_codec_is_decoder(avctx->codec)) {
676 /* validate channel layout from the decoder */
677 if (avctx->channel_layout) {
678 int channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
679 if (!avctx->channels)
680 avctx->channels = channels;
681 else if (channels != avctx->channels) {
682 av_log(avctx, AV_LOG_WARNING,
683 "channel layout does not match number of channels\n");
684 avctx->channel_layout = 0;
687 if (avctx->channels && avctx->channels < 0 ||
688 avctx->channels > FF_SANE_NB_CHANNELS) {
689 ret = AVERROR(EINVAL);
693 #if FF_API_AVCTX_TIMEBASE
694 if (avctx->framerate.num > 0 && avctx->framerate.den > 0)
695 avctx->time_base = av_inv_q(avctx->framerate);
699 if (!(codec->caps_internal & FF_CODEC_CAP_INIT_THREADSAFE) && codec->init) {
700 entangled_thread_counter--;
702 /* Release any user-supplied mutex. */
704 (*lockmgr_cb)(&codec_mutex, AV_LOCK_RELEASE);
709 av_dict_free(options);
716 (avctx->codec->caps_internal & FF_CODEC_CAP_INIT_CLEANUP))
717 avctx->codec->close(avctx);
719 if (avctx->priv_data && avctx->codec && avctx->codec->priv_class)
720 av_opt_free(avctx->priv_data);
723 #if FF_API_CODED_FRAME
724 FF_DISABLE_DEPRECATION_WARNINGS
725 av_frame_free(&avctx->coded_frame);
726 FF_ENABLE_DEPRECATION_WARNINGS
730 av_freep(&avctx->priv_data);
731 if (avctx->internal) {
732 av_frame_free(&avctx->internal->to_free);
733 av_frame_free(&avctx->internal->compat_decode_frame);
734 av_frame_free(&avctx->internal->buffer_frame);
735 av_packet_free(&avctx->internal->buffer_pkt);
736 av_packet_free(&avctx->internal->last_pkt_props);
738 av_packet_free(&avctx->internal->ds.in_pkt);
740 av_freep(&avctx->internal->pool);
742 av_freep(&avctx->internal);
747 void avsubtitle_free(AVSubtitle *sub)
751 for (i = 0; i < sub->num_rects; i++) {
752 av_freep(&sub->rects[i]->data[0]);
753 av_freep(&sub->rects[i]->data[1]);
754 av_freep(&sub->rects[i]->data[2]);
755 av_freep(&sub->rects[i]->data[3]);
756 av_freep(&sub->rects[i]->text);
757 av_freep(&sub->rects[i]->ass);
758 av_freep(&sub->rects[i]);
761 av_freep(&sub->rects);
763 memset(sub, 0, sizeof(AVSubtitle));
766 av_cold int avcodec_close(AVCodecContext *avctx)
770 if (avcodec_is_open(avctx)) {
771 FramePool *pool = avctx->internal->pool;
773 if (HAVE_THREADS && avctx->internal->thread_ctx)
774 ff_thread_free(avctx);
775 if (avctx->codec && avctx->codec->close)
776 avctx->codec->close(avctx);
777 av_frame_free(&avctx->internal->to_free);
778 av_frame_free(&avctx->internal->compat_decode_frame);
779 av_frame_free(&avctx->internal->buffer_frame);
780 av_packet_free(&avctx->internal->buffer_pkt);
781 av_packet_free(&avctx->internal->last_pkt_props);
783 av_packet_free(&avctx->internal->ds.in_pkt);
785 for (i = 0; i < FF_ARRAY_ELEMS(pool->pools); i++)
786 av_buffer_pool_uninit(&pool->pools[i]);
787 av_freep(&avctx->internal->pool);
789 if (avctx->hwaccel && avctx->hwaccel->uninit)
790 avctx->hwaccel->uninit(avctx);
791 av_freep(&avctx->internal->hwaccel_priv_data);
793 ff_decode_bsfs_uninit(avctx);
795 av_freep(&avctx->internal);
798 for (i = 0; i < avctx->nb_coded_side_data; i++)
799 av_freep(&avctx->coded_side_data[i].data);
800 av_freep(&avctx->coded_side_data);
801 avctx->nb_coded_side_data = 0;
803 av_buffer_unref(&avctx->hw_frames_ctx);
805 if (avctx->priv_data && avctx->codec && avctx->codec->priv_class)
806 av_opt_free(avctx->priv_data);
808 av_freep(&avctx->priv_data);
809 if (av_codec_is_encoder(avctx->codec)) {
810 av_freep(&avctx->extradata);
811 #if FF_API_CODED_FRAME
812 FF_DISABLE_DEPRECATION_WARNINGS
813 av_frame_free(&avctx->coded_frame);
814 FF_ENABLE_DEPRECATION_WARNINGS
818 avctx->active_thread_type = 0;
823 static AVCodec *find_encdec(enum AVCodecID id, int encoder)
825 AVCodec *p, *experimental = NULL;
828 if ((encoder ? av_codec_is_encoder(p) : av_codec_is_decoder(p)) &&
830 if (p->capabilities & AV_CODEC_CAP_EXPERIMENTAL && !experimental) {
840 AVCodec *avcodec_find_encoder(enum AVCodecID id)
842 return find_encdec(id, 1);
845 AVCodec *avcodec_find_encoder_by_name(const char *name)
852 if (av_codec_is_encoder(p) && strcmp(name, p->name) == 0)
859 AVCodec *avcodec_find_decoder(enum AVCodecID id)
861 return find_encdec(id, 0);
864 AVCodec *avcodec_find_decoder_by_name(const char *name)
871 if (av_codec_is_decoder(p) && strcmp(name, p->name) == 0)
878 static int get_bit_rate(AVCodecContext *ctx)
883 switch (ctx->codec_type) {
884 case AVMEDIA_TYPE_VIDEO:
885 case AVMEDIA_TYPE_DATA:
886 case AVMEDIA_TYPE_SUBTITLE:
887 case AVMEDIA_TYPE_ATTACHMENT:
888 bit_rate = ctx->bit_rate;
890 case AVMEDIA_TYPE_AUDIO:
891 bits_per_sample = av_get_bits_per_sample(ctx->codec_id);
892 bit_rate = bits_per_sample ? ctx->sample_rate * ctx->channels * bits_per_sample : ctx->bit_rate;
901 size_t av_get_codec_tag_string(char *buf, size_t buf_size, unsigned int codec_tag)
905 #define TAG_PRINT(x) \
906 (((x) >= '0' && (x) <= '9') || \
907 ((x) >= 'a' && (x) <= 'z') || ((x) >= 'A' && (x) <= 'Z') || \
908 ((x) == '.' || (x) == ' '))
910 for (i = 0; i < 4; i++) {
911 len = snprintf(buf, buf_size,
912 TAG_PRINT(codec_tag & 0xFF) ? "%c" : "[%d]", codec_tag & 0xFF);
914 buf_size = buf_size > len ? buf_size - len : 0;
921 void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)
923 const char *codec_name;
924 const char *profile = NULL;
928 AVRational display_aspect_ratio;
929 const AVCodecDescriptor *desc = avcodec_descriptor_get(enc->codec_id);
932 codec_name = desc->name;
933 profile = avcodec_profile_name(enc->codec_id, enc->profile);
934 } else if (enc->codec_id == AV_CODEC_ID_MPEG2TS) {
935 /* fake mpeg2 transport stream codec (currently not
937 codec_name = "mpeg2ts";
939 /* output avi tags */
941 av_get_codec_tag_string(tag_buf, sizeof(tag_buf), enc->codec_tag);
942 snprintf(buf1, sizeof(buf1), "%s / 0x%04X", tag_buf, enc->codec_tag);
946 switch (enc->codec_type) {
947 case AVMEDIA_TYPE_VIDEO:
948 snprintf(buf, buf_size,
950 codec_name, enc->mb_decision ? " (hq)" : "");
952 snprintf(buf + strlen(buf), buf_size - strlen(buf),
954 if (enc->codec_tag) {
956 av_get_codec_tag_string(tag_buf, sizeof(tag_buf), enc->codec_tag);
957 snprintf(buf + strlen(buf), buf_size - strlen(buf),
958 " [%s / 0x%04X]", tag_buf, enc->codec_tag);
961 av_strlcat(buf, "\n ", buf_size);
962 snprintf(buf + strlen(buf), buf_size - strlen(buf),
963 "%s", enc->pix_fmt == AV_PIX_FMT_NONE ? "none" :
964 av_get_pix_fmt_name(enc->pix_fmt));
966 if (enc->color_range != AVCOL_RANGE_UNSPECIFIED)
967 snprintf(buf + strlen(buf), buf_size - strlen(buf), ", %s",
968 av_color_range_name(enc->color_range));
969 if (enc->colorspace != AVCOL_SPC_UNSPECIFIED ||
970 enc->color_primaries != AVCOL_PRI_UNSPECIFIED ||
971 enc->color_trc != AVCOL_TRC_UNSPECIFIED) {
973 snprintf(buf + strlen(buf), buf_size - strlen(buf), ", %s/%s/%s",
974 av_color_space_name(enc->colorspace),
975 av_color_primaries_name(enc->color_primaries),
976 av_color_transfer_name(enc->color_trc));
978 if (av_log_get_level() >= AV_LOG_DEBUG &&
979 enc->chroma_sample_location != AVCHROMA_LOC_UNSPECIFIED)
980 snprintf(buf + strlen(buf), buf_size - strlen(buf), ", %s",
981 av_chroma_location_name(enc->chroma_sample_location));
984 av_strlcat(buf, new_line ? "\n " : ", ", buf_size);
986 snprintf(buf + strlen(buf), buf_size - strlen(buf),
988 enc->width, enc->height);
990 if (av_log_get_level() >= AV_LOG_VERBOSE &&
991 (enc->width != enc->coded_width ||
992 enc->height != enc->coded_height))
993 snprintf(buf + strlen(buf), buf_size - strlen(buf),
994 " (%dx%d)", enc->coded_width, enc->coded_height);
996 if (enc->sample_aspect_ratio.num) {
997 av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
998 enc->width * enc->sample_aspect_ratio.num,
999 enc->height * enc->sample_aspect_ratio.den,
1001 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1002 " [PAR %d:%d DAR %d:%d]",
1003 enc->sample_aspect_ratio.num, enc->sample_aspect_ratio.den,
1004 display_aspect_ratio.num, display_aspect_ratio.den);
1006 if (av_log_get_level() >= AV_LOG_DEBUG) {
1007 int g = av_gcd(enc->time_base.num, enc->time_base.den);
1008 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1010 enc->time_base.num / g, enc->time_base.den / g);
1014 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1015 ", q=%d-%d", enc->qmin, enc->qmax);
1018 case AVMEDIA_TYPE_AUDIO:
1019 snprintf(buf, buf_size,
1023 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1025 if (enc->codec_tag) {
1027 av_get_codec_tag_string(tag_buf, sizeof(tag_buf), enc->codec_tag);
1028 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1029 " [%s / 0x%04X]", tag_buf, enc->codec_tag);
1032 av_strlcat(buf, "\n ", buf_size);
1033 if (enc->sample_rate) {
1034 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1035 "%d Hz, ", enc->sample_rate);
1037 av_get_channel_layout_string(buf + strlen(buf), buf_size - strlen(buf), enc->channels, enc->channel_layout);
1038 if (enc->sample_fmt != AV_SAMPLE_FMT_NONE) {
1039 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1040 ", %s", av_get_sample_fmt_name(enc->sample_fmt));
1043 case AVMEDIA_TYPE_DATA:
1044 snprintf(buf, buf_size, "Data: %s", codec_name);
1046 case AVMEDIA_TYPE_SUBTITLE:
1047 snprintf(buf, buf_size, "Subtitle: %s", codec_name);
1049 case AVMEDIA_TYPE_ATTACHMENT:
1050 snprintf(buf, buf_size, "Attachment: %s", codec_name);
1053 snprintf(buf, buf_size, "Invalid Codec type %d", enc->codec_type);
1057 if (enc->flags & AV_CODEC_FLAG_PASS1)
1058 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1060 if (enc->flags & AV_CODEC_FLAG_PASS2)
1061 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1064 bitrate = get_bit_rate(enc);
1066 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1067 ", %d kb/s", bitrate / 1000);
1071 const char *av_get_profile_name(const AVCodec *codec, int profile)
1074 if (profile == FF_PROFILE_UNKNOWN || !codec->profiles)
1077 for (p = codec->profiles; p->profile != FF_PROFILE_UNKNOWN; p++)
1078 if (p->profile == profile)
1084 const char *avcodec_profile_name(enum AVCodecID codec_id, int profile)
1086 const AVCodecDescriptor *desc = avcodec_descriptor_get(codec_id);
1089 if (profile == FF_PROFILE_UNKNOWN || !desc || !desc->profiles)
1092 for (p = desc->profiles; p->profile != FF_PROFILE_UNKNOWN; p++)
1093 if (p->profile == profile)
1099 unsigned avcodec_version(void)
1101 return LIBAVCODEC_VERSION_INT;
1104 const char *avcodec_configuration(void)
1106 return LIBAV_CONFIGURATION;
1109 const char *avcodec_license(void)
1111 #define LICENSE_PREFIX "libavcodec license: "
1112 return LICENSE_PREFIX LIBAV_LICENSE + sizeof(LICENSE_PREFIX) - 1;
1115 int av_get_exact_bits_per_sample(enum AVCodecID codec_id)
1118 case AV_CODEC_ID_ADPCM_CT:
1119 case AV_CODEC_ID_ADPCM_IMA_APC:
1120 case AV_CODEC_ID_ADPCM_IMA_EA_SEAD:
1121 case AV_CODEC_ID_ADPCM_IMA_WS:
1122 case AV_CODEC_ID_ADPCM_G722:
1123 case AV_CODEC_ID_ADPCM_YAMAHA:
1125 case AV_CODEC_ID_PCM_ALAW:
1126 case AV_CODEC_ID_PCM_MULAW:
1127 case AV_CODEC_ID_PCM_S8:
1128 case AV_CODEC_ID_PCM_U8:
1129 case AV_CODEC_ID_PCM_ZORK:
1131 case AV_CODEC_ID_PCM_S16BE:
1132 case AV_CODEC_ID_PCM_S16BE_PLANAR:
1133 case AV_CODEC_ID_PCM_S16LE:
1134 case AV_CODEC_ID_PCM_S16LE_PLANAR:
1135 case AV_CODEC_ID_PCM_U16BE:
1136 case AV_CODEC_ID_PCM_U16LE:
1138 case AV_CODEC_ID_PCM_S24DAUD:
1139 case AV_CODEC_ID_PCM_S24BE:
1140 case AV_CODEC_ID_PCM_S24LE:
1141 case AV_CODEC_ID_PCM_S24LE_PLANAR:
1142 case AV_CODEC_ID_PCM_U24BE:
1143 case AV_CODEC_ID_PCM_U24LE:
1145 case AV_CODEC_ID_PCM_S32BE:
1146 case AV_CODEC_ID_PCM_S32LE:
1147 case AV_CODEC_ID_PCM_S32LE_PLANAR:
1148 case AV_CODEC_ID_PCM_U32BE:
1149 case AV_CODEC_ID_PCM_U32LE:
1150 case AV_CODEC_ID_PCM_F32BE:
1151 case AV_CODEC_ID_PCM_F32LE:
1153 case AV_CODEC_ID_PCM_F64BE:
1154 case AV_CODEC_ID_PCM_F64LE:
1161 int av_get_bits_per_sample(enum AVCodecID codec_id)
1164 case AV_CODEC_ID_ADPCM_SBPRO_2:
1166 case AV_CODEC_ID_ADPCM_SBPRO_3:
1168 case AV_CODEC_ID_ADPCM_SBPRO_4:
1169 case AV_CODEC_ID_ADPCM_IMA_WAV:
1170 case AV_CODEC_ID_ADPCM_IMA_QT:
1171 case AV_CODEC_ID_ADPCM_SWF:
1172 case AV_CODEC_ID_ADPCM_MS:
1175 return av_get_exact_bits_per_sample(codec_id);
1179 static int get_audio_frame_duration(enum AVCodecID id, int sr, int ch, int ba,
1180 uint32_t tag, int bits_per_coded_sample, int frame_bytes)
1182 int bps = av_get_exact_bits_per_sample(id);
1184 /* codecs with an exact constant bits per sample */
1185 if (bps > 0 && ch > 0 && frame_bytes > 0)
1186 return (frame_bytes * 8) / (bps * ch);
1187 bps = bits_per_coded_sample;
1189 /* codecs with a fixed packet duration */
1191 case AV_CODEC_ID_ADPCM_ADX: return 32;
1192 case AV_CODEC_ID_ADPCM_IMA_QT: return 64;
1193 case AV_CODEC_ID_ADPCM_EA_XAS: return 128;
1194 case AV_CODEC_ID_AMR_NB:
1195 case AV_CODEC_ID_GSM:
1196 case AV_CODEC_ID_QCELP:
1197 case AV_CODEC_ID_RA_144:
1198 case AV_CODEC_ID_RA_288: return 160;
1199 case AV_CODEC_ID_IMC: return 256;
1200 case AV_CODEC_ID_AMR_WB:
1201 case AV_CODEC_ID_GSM_MS: return 320;
1202 case AV_CODEC_ID_MP1: return 384;
1203 case AV_CODEC_ID_ATRAC1: return 512;
1204 case AV_CODEC_ID_ATRAC3: return 1024;
1205 case AV_CODEC_ID_MP2:
1206 case AV_CODEC_ID_MUSEPACK7: return 1152;
1207 case AV_CODEC_ID_AC3: return 1536;
1211 /* calc from sample rate */
1212 if (id == AV_CODEC_ID_TTA)
1213 return 256 * sr / 245;
1216 /* calc from sample rate and channels */
1217 if (id == AV_CODEC_ID_BINKAUDIO_DCT)
1218 return (480 << (sr / 22050)) / ch;
1221 if (id == AV_CODEC_ID_MP3)
1222 return sr <= 24000 ? 576 : 1152;
1226 /* calc from block_align */
1227 if (id == AV_CODEC_ID_SIPR) {
1229 case 20: return 160;
1230 case 19: return 144;
1231 case 29: return 288;
1232 case 37: return 480;
1234 } else if (id == AV_CODEC_ID_ILBC) {
1236 case 38: return 160;
1237 case 50: return 240;
1242 if (frame_bytes > 0) {
1243 /* calc from frame_bytes only */
1244 if (id == AV_CODEC_ID_TRUESPEECH)
1245 return 240 * (frame_bytes / 32);
1246 if (id == AV_CODEC_ID_NELLYMOSER)
1247 return 256 * (frame_bytes / 64);
1250 /* calc from frame_bytes and bits_per_coded_sample */
1251 if (id == AV_CODEC_ID_ADPCM_G726)
1252 return frame_bytes * 8 / bps;
1256 /* calc from frame_bytes and channels */
1258 case AV_CODEC_ID_ADPCM_4XM:
1259 case AV_CODEC_ID_ADPCM_IMA_ISS:
1260 return (frame_bytes - 4 * ch) * 2 / ch;
1261 case AV_CODEC_ID_ADPCM_IMA_SMJPEG:
1262 return (frame_bytes - 4) * 2 / ch;
1263 case AV_CODEC_ID_ADPCM_IMA_AMV:
1264 return (frame_bytes - 8) * 2 / ch;
1265 case AV_CODEC_ID_ADPCM_XA:
1266 return (frame_bytes / 128) * 224 / ch;
1267 case AV_CODEC_ID_INTERPLAY_DPCM:
1268 return (frame_bytes - 6 - ch) / ch;
1269 case AV_CODEC_ID_ROQ_DPCM:
1270 return (frame_bytes - 8) / ch;
1271 case AV_CODEC_ID_XAN_DPCM:
1272 return (frame_bytes - 2 * ch) / ch;
1273 case AV_CODEC_ID_MACE3:
1274 return 3 * frame_bytes / ch;
1275 case AV_CODEC_ID_MACE6:
1276 return 6 * frame_bytes / ch;
1277 case AV_CODEC_ID_PCM_LXF:
1278 return 2 * (frame_bytes / (5 * ch));
1282 /* calc from frame_bytes, channels, and codec_tag */
1283 if (id == AV_CODEC_ID_SOL_DPCM) {
1285 return frame_bytes / ch;
1287 return frame_bytes * 2 / ch;
1292 /* calc from frame_bytes, channels, and block_align */
1293 int blocks = frame_bytes / ba;
1295 case AV_CODEC_ID_ADPCM_IMA_WAV:
1296 return blocks * (1 + (ba - 4 * ch) / (4 * ch) * 8);
1297 case AV_CODEC_ID_ADPCM_IMA_DK3:
1298 return blocks * (((ba - 16) * 2 / 3 * 4) / ch);
1299 case AV_CODEC_ID_ADPCM_IMA_DK4:
1300 return blocks * (1 + (ba - 4 * ch) * 2 / ch);
1301 case AV_CODEC_ID_ADPCM_MS:
1302 return blocks * (2 + (ba - 7 * ch) * 2 / ch);
1307 /* calc from frame_bytes, channels, and bits_per_coded_sample */
1309 case AV_CODEC_ID_PCM_DVD:
1310 return 2 * (frame_bytes / ((bps * 2 / 8) * ch));
1311 case AV_CODEC_ID_PCM_BLURAY:
1312 return frame_bytes / ((FFALIGN(ch, 2) * bps) / 8);
1313 case AV_CODEC_ID_S302M:
1314 return 2 * (frame_bytes / ((bps + 4) / 4)) / ch;
1323 int av_get_audio_frame_duration(AVCodecContext *avctx, int frame_bytes)
1325 return get_audio_frame_duration(avctx->codec_id, avctx->sample_rate,
1326 avctx->channels, avctx->block_align,
1327 avctx->codec_tag, avctx->bits_per_coded_sample,
1331 int av_get_audio_frame_duration2(AVCodecParameters *par, int frame_bytes)
1333 return get_audio_frame_duration(par->codec_id, par->sample_rate,
1334 par->channels, par->block_align,
1335 par->codec_tag, par->bits_per_coded_sample,
1340 int ff_thread_init(AVCodecContext *s)
1347 unsigned int av_xiphlacing(unsigned char *s, unsigned int v)
1361 int ff_match_2uint16(const uint16_t(*tab)[2], int size, int a, int b)
1364 for (i = 0; i < size && !(tab[i][0] == a && tab[i][1] == b); i++) ;
1368 #if FF_API_MISSING_SAMPLE
1369 FF_DISABLE_DEPRECATION_WARNINGS
1370 void av_log_missing_feature(void *avc, const char *feature, int want_sample)
1372 av_log(avc, AV_LOG_WARNING, "%s is not implemented. Update your Libav "
1373 "version to the newest one from Git. If the problem still "
1374 "occurs, it means that your file has a feature which has not "
1375 "been implemented.\n", feature);
1377 av_log_ask_for_sample(avc, NULL);
1380 void av_log_ask_for_sample(void *avc, const char *msg, ...)
1382 va_list argument_list;
1384 va_start(argument_list, msg);
1387 av_vlog(avc, AV_LOG_WARNING, msg, argument_list);
1388 av_log(avc, AV_LOG_WARNING, "If you want to help, upload a sample "
1389 "of this file to ftp://upload.libav.org/incoming/ "
1390 "and contact the libav-devel mailing list.\n");
1392 va_end(argument_list);
1394 FF_ENABLE_DEPRECATION_WARNINGS
1395 #endif /* FF_API_MISSING_SAMPLE */
1397 static AVHWAccel *first_hwaccel = NULL;
1399 void av_register_hwaccel(AVHWAccel *hwaccel)
1401 AVHWAccel **p = &first_hwaccel;
1405 hwaccel->next = NULL;
1408 AVHWAccel *av_hwaccel_next(const AVHWAccel *hwaccel)
1410 return hwaccel ? hwaccel->next : first_hwaccel;
1413 int av_lockmgr_register(int (*cb)(void **mutex, enum AVLockOp op))
1416 // There is no good way to rollback a failure to destroy the
1417 // mutex, so we ignore failures.
1418 lockmgr_cb(&codec_mutex, AV_LOCK_DESTROY);
1419 lockmgr_cb(&avformat_mutex, AV_LOCK_DESTROY);
1422 avformat_mutex = NULL;
1426 void *new_codec_mutex = NULL;
1427 void *new_avformat_mutex = NULL;
1429 if (err = cb(&new_codec_mutex, AV_LOCK_CREATE)) {
1430 return err > 0 ? AVERROR_UNKNOWN : err;
1432 if (err = cb(&new_avformat_mutex, AV_LOCK_CREATE)) {
1433 // Ignore failures to destroy the newly created mutex.
1434 cb(&new_codec_mutex, AV_LOCK_DESTROY);
1435 return err > 0 ? AVERROR_UNKNOWN : err;
1438 codec_mutex = new_codec_mutex;
1439 avformat_mutex = new_avformat_mutex;
1445 int avpriv_lock_avformat(void)
1448 if ((*lockmgr_cb)(&avformat_mutex, AV_LOCK_OBTAIN))
1454 int avpriv_unlock_avformat(void)
1457 if ((*lockmgr_cb)(&avformat_mutex, AV_LOCK_RELEASE))
1463 unsigned int avpriv_toupper4(unsigned int x)
1465 return av_toupper(x & 0xFF) +
1466 (av_toupper((x >> 8) & 0xFF) << 8) +
1467 (av_toupper((x >> 16) & 0xFF) << 16) +
1468 (av_toupper((x >> 24) & 0xFF) << 24);
1471 int ff_thread_ref_frame(ThreadFrame *dst, ThreadFrame *src)
1475 dst->owner = src->owner;
1477 ret = av_frame_ref(dst->f, src->f);
1481 if (src->progress &&
1482 !(dst->progress = av_buffer_ref(src->progress))) {
1483 ff_thread_release_buffer(dst->owner, dst);
1484 return AVERROR(ENOMEM);
1492 int ff_thread_get_buffer(AVCodecContext *avctx, ThreadFrame *f, int flags)
1495 return ff_get_buffer(avctx, f->f, flags);
1498 void ff_thread_release_buffer(AVCodecContext *avctx, ThreadFrame *f)
1501 av_frame_unref(f->f);
1504 void ff_thread_finish_setup(AVCodecContext *avctx)
1508 void ff_thread_report_progress(ThreadFrame *f, int progress, int field)
1512 void ff_thread_await_progress(ThreadFrame *f, int progress, int field)
1518 int avcodec_is_open(AVCodecContext *s)
1520 return !!s->internal;
1523 const uint8_t *avpriv_find_start_code(const uint8_t *restrict p,
1525 uint32_t * restrict state)
1533 for (i = 0; i < 3; i++) {
1534 uint32_t tmp = *state << 8;
1535 *state = tmp + *(p++);
1536 if (tmp == 0x100 || p == end)
1541 if (p[-1] > 1 ) p += 3;
1542 else if (p[-2] ) p += 2;
1543 else if (p[-3]|(p[-1]-1)) p++;
1550 p = FFMIN(p, end) - 4;
1551 *state = AV_RB32(p);
1556 AVCPBProperties *av_cpb_properties_alloc(size_t *size)
1558 AVCPBProperties *props = av_mallocz(sizeof(AVCPBProperties));
1563 *size = sizeof(*props);
1565 props->vbv_delay = UINT64_MAX;
1570 AVCPBProperties *ff_add_cpb_side_data(AVCodecContext *avctx)
1572 AVPacketSideData *tmp;
1573 AVCPBProperties *props;
1576 props = av_cpb_properties_alloc(&size);
1580 tmp = av_realloc_array(avctx->coded_side_data, avctx->nb_coded_side_data + 1, sizeof(*tmp));
1586 avctx->coded_side_data = tmp;
1587 avctx->nb_coded_side_data++;
1589 avctx->coded_side_data[avctx->nb_coded_side_data - 1].type = AV_PKT_DATA_CPB_PROPERTIES;
1590 avctx->coded_side_data[avctx->nb_coded_side_data - 1].data = (uint8_t*)props;
1591 avctx->coded_side_data[avctx->nb_coded_side_data - 1].size = size;
1596 static void codec_parameters_reset(AVCodecParameters *par)
1598 av_freep(&par->extradata);
1600 memset(par, 0, sizeof(*par));
1602 par->codec_type = AVMEDIA_TYPE_UNKNOWN;
1603 par->codec_id = AV_CODEC_ID_NONE;
1605 par->field_order = AV_FIELD_UNKNOWN;
1606 par->color_range = AVCOL_RANGE_UNSPECIFIED;
1607 par->color_primaries = AVCOL_PRI_UNSPECIFIED;
1608 par->color_trc = AVCOL_TRC_UNSPECIFIED;
1609 par->color_space = AVCOL_SPC_UNSPECIFIED;
1610 par->chroma_location = AVCHROMA_LOC_UNSPECIFIED;
1611 par->sample_aspect_ratio = (AVRational){ 0, 1 };
1614 AVCodecParameters *avcodec_parameters_alloc(void)
1616 AVCodecParameters *par = av_mallocz(sizeof(*par));
1620 codec_parameters_reset(par);
1624 void avcodec_parameters_free(AVCodecParameters **ppar)
1626 AVCodecParameters *par = *ppar;
1630 codec_parameters_reset(par);
1635 int avcodec_parameters_copy(AVCodecParameters *dst, const AVCodecParameters *src)
1637 codec_parameters_reset(dst);
1638 memcpy(dst, src, sizeof(*dst));
1640 dst->extradata = NULL;
1641 dst->extradata_size = 0;
1642 if (src->extradata) {
1643 dst->extradata = av_mallocz(src->extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);
1644 if (!dst->extradata)
1645 return AVERROR(ENOMEM);
1646 memcpy(dst->extradata, src->extradata, src->extradata_size);
1647 dst->extradata_size = src->extradata_size;
1653 int avcodec_parameters_from_context(AVCodecParameters *par,
1654 const AVCodecContext *codec)
1656 codec_parameters_reset(par);
1658 par->codec_type = codec->codec_type;
1659 par->codec_id = codec->codec_id;
1660 par->codec_tag = codec->codec_tag;
1662 par->bit_rate = codec->bit_rate;
1663 par->bits_per_coded_sample = codec->bits_per_coded_sample;
1664 par->profile = codec->profile;
1665 par->level = codec->level;
1667 switch (par->codec_type) {
1668 case AVMEDIA_TYPE_VIDEO:
1669 par->format = codec->pix_fmt;
1670 par->width = codec->width;
1671 par->height = codec->height;
1672 par->field_order = codec->field_order;
1673 par->color_range = codec->color_range;
1674 par->color_primaries = codec->color_primaries;
1675 par->color_trc = codec->color_trc;
1676 par->color_space = codec->colorspace;
1677 par->chroma_location = codec->chroma_sample_location;
1678 par->sample_aspect_ratio = codec->sample_aspect_ratio;
1680 case AVMEDIA_TYPE_AUDIO:
1681 par->format = codec->sample_fmt;
1682 par->channel_layout = codec->channel_layout;
1683 par->channels = codec->channels;
1684 par->sample_rate = codec->sample_rate;
1685 par->block_align = codec->block_align;
1686 par->initial_padding = codec->initial_padding;
1690 if (codec->extradata) {
1691 par->extradata = av_mallocz(codec->extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);
1692 if (!par->extradata)
1693 return AVERROR(ENOMEM);
1694 memcpy(par->extradata, codec->extradata, codec->extradata_size);
1695 par->extradata_size = codec->extradata_size;
1701 int avcodec_parameters_to_context(AVCodecContext *codec,
1702 const AVCodecParameters *par)
1704 codec->codec_type = par->codec_type;
1705 codec->codec_id = par->codec_id;
1706 codec->codec_tag = par->codec_tag;
1708 codec->bit_rate = par->bit_rate;
1709 codec->bits_per_coded_sample = par->bits_per_coded_sample;
1710 codec->profile = par->profile;
1711 codec->level = par->level;
1713 switch (par->codec_type) {
1714 case AVMEDIA_TYPE_VIDEO:
1715 codec->pix_fmt = par->format;
1716 codec->width = par->width;
1717 codec->height = par->height;
1718 codec->field_order = par->field_order;
1719 codec->color_range = par->color_range;
1720 codec->color_primaries = par->color_primaries;
1721 codec->color_trc = par->color_trc;
1722 codec->colorspace = par->color_space;
1723 codec->chroma_sample_location = par->chroma_location;
1724 codec->sample_aspect_ratio = par->sample_aspect_ratio;
1726 case AVMEDIA_TYPE_AUDIO:
1727 codec->sample_fmt = par->format;
1728 codec->channel_layout = par->channel_layout;
1729 codec->channels = par->channels;
1730 codec->sample_rate = par->sample_rate;
1731 codec->block_align = par->block_align;
1732 codec->initial_padding = par->initial_padding;
1736 if (par->extradata) {
1737 av_freep(&codec->extradata);
1738 codec->extradata = av_mallocz(par->extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);
1739 if (!codec->extradata)
1740 return AVERROR(ENOMEM);
1741 memcpy(codec->extradata, par->extradata, par->extradata_size);
1742 codec->extradata_size = par->extradata_size;