3 * Copyright (c) 2001 Fabrice Bellard
4 * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
6 * This file is part of FFmpeg.
8 * FFmpeg is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
13 * FFmpeg is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with FFmpeg; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
29 #include "libavutil/atomic.h"
30 #include "libavutil/attributes.h"
31 #include "libavutil/avassert.h"
32 #include "libavutil/avstring.h"
33 #include "libavutil/bprint.h"
34 #include "libavutil/channel_layout.h"
35 #include "libavutil/crc.h"
36 #include "libavutil/frame.h"
37 #include "libavutil/internal.h"
38 #include "libavutil/mathematics.h"
39 #include "libavutil/pixdesc.h"
40 #include "libavutil/imgutils.h"
41 #include "libavutil/samplefmt.h"
42 #include "libavutil/dict.h"
45 #include "libavutil/opt.h"
47 #include "frame_thread_encoder.h"
50 #include "bytestream.h"
63 #include "compat/w32pthreads.h"
65 #include "compat/os2threads.h"
68 #if HAVE_PTHREADS || HAVE_W32THREADS || HAVE_OS2THREADS
69 static int default_lockmgr_cb(void **arg, enum AVLockOp op)
71 void * volatile * mutex = arg;
79 pthread_mutex_t *tmp = av_malloc(sizeof(pthread_mutex_t));
81 return AVERROR(ENOMEM);
82 if ((err = pthread_mutex_init(tmp, NULL))) {
86 if (avpriv_atomic_ptr_cas(mutex, NULL, tmp)) {
87 pthread_mutex_destroy(tmp);
92 if ((err = pthread_mutex_lock(*mutex)))
97 if ((err = pthread_mutex_unlock(*mutex)))
101 case AV_LOCK_DESTROY:
103 pthread_mutex_destroy(*mutex);
105 avpriv_atomic_ptr_cas(mutex, *mutex, NULL);
110 static int (*lockmgr_cb)(void **mutex, enum AVLockOp op) = default_lockmgr_cb;
112 static int (*lockmgr_cb)(void **mutex, enum AVLockOp op) = NULL;
116 volatile int ff_avcodec_locked;
117 static int volatile entangled_thread_counter = 0;
118 static void *codec_mutex;
119 static void *avformat_mutex;
121 #if CONFIG_RAISE_MAJOR
122 # define LIBNAME "LIBAVCODEC_155"
124 # define LIBNAME "LIBAVCODEC_55"
127 #if FF_API_FAST_MALLOC && CONFIG_SHARED && HAVE_SYMVER
128 FF_SYMVER(void*, av_fast_realloc, (void *ptr, unsigned int *size, size_t min_size), LIBNAME)
130 return av_fast_realloc(ptr, size, min_size);
133 FF_SYMVER(void, av_fast_malloc, (void *ptr, unsigned int *size, size_t min_size), LIBNAME)
135 av_fast_malloc(ptr, size, min_size);
139 static inline int ff_fast_malloc(void *ptr, unsigned int *size, size_t min_size, int zero_realloc)
142 if (min_size < *size)
144 min_size = FFMAX(17 * min_size / 16 + 32, min_size);
146 *p = zero_realloc ? av_mallocz(min_size) : av_malloc(min_size);
153 void av_fast_padded_malloc(void *ptr, unsigned int *size, size_t min_size)
156 if (min_size > SIZE_MAX - FF_INPUT_BUFFER_PADDING_SIZE) {
161 if (!ff_fast_malloc(p, size, min_size + FF_INPUT_BUFFER_PADDING_SIZE, 1))
162 memset(*p + min_size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
165 void av_fast_padded_mallocz(void *ptr, unsigned int *size, size_t min_size)
168 if (min_size > SIZE_MAX - FF_INPUT_BUFFER_PADDING_SIZE) {
173 if (!ff_fast_malloc(p, size, min_size + FF_INPUT_BUFFER_PADDING_SIZE, 1))
174 memset(*p, 0, min_size + FF_INPUT_BUFFER_PADDING_SIZE);
177 /* encoder management */
178 static AVCodec *first_avcodec = NULL;
179 static AVCodec **last_avcodec = &first_avcodec;
181 AVCodec *av_codec_next(const AVCodec *c)
186 return first_avcodec;
189 static av_cold void avcodec_init(void)
191 static int initialized = 0;
193 if (initialized != 0)
198 ff_dsputil_static_init();
201 int av_codec_is_encoder(const AVCodec *codec)
203 return codec && (codec->encode_sub || codec->encode2);
206 int av_codec_is_decoder(const AVCodec *codec)
208 return codec && codec->decode;
211 av_cold void avcodec_register(AVCodec *codec)
218 while(*p || avpriv_atomic_ptr_cas((void * volatile *)p, NULL, codec))
220 last_avcodec = &codec->next;
222 if (codec->init_static_data)
223 codec->init_static_data(codec);
227 unsigned avcodec_get_edge_width(void)
233 #if FF_API_SET_DIMENSIONS
234 void avcodec_set_dimensions(AVCodecContext *s, int width, int height)
236 int ret = ff_set_dimensions(s, width, height);
238 av_log(s, AV_LOG_WARNING, "Failed to set dimensions %d %d\n", width, height);
243 int ff_set_dimensions(AVCodecContext *s, int width, int height)
245 int ret = av_image_check_size(width, height, 0, s);
250 s->coded_width = width;
251 s->coded_height = height;
252 s->width = FF_CEIL_RSHIFT(width, s->lowres);
253 s->height = FF_CEIL_RSHIFT(height, s->lowres);
258 int ff_side_data_update_matrix_encoding(AVFrame *frame,
259 enum AVMatrixEncoding matrix_encoding)
261 AVFrameSideData *side_data;
262 enum AVMatrixEncoding *data;
264 side_data = av_frame_get_side_data(frame, AV_FRAME_DATA_MATRIXENCODING);
266 side_data = av_frame_new_side_data(frame, AV_FRAME_DATA_MATRIXENCODING,
267 sizeof(enum AVMatrixEncoding));
270 return AVERROR(ENOMEM);
272 data = (enum AVMatrixEncoding*)side_data->data;
273 *data = matrix_encoding;
278 void avcodec_align_dimensions2(AVCodecContext *s, int *width, int *height,
279 int linesize_align[AV_NUM_DATA_POINTERS])
285 switch (s->pix_fmt) {
286 case AV_PIX_FMT_YUV420P:
287 case AV_PIX_FMT_YUYV422:
288 case AV_PIX_FMT_YVYU422:
289 case AV_PIX_FMT_UYVY422:
290 case AV_PIX_FMT_YUV422P:
291 case AV_PIX_FMT_YUV440P:
292 case AV_PIX_FMT_YUV444P:
293 case AV_PIX_FMT_GBRAP:
294 case AV_PIX_FMT_GBRP:
295 case AV_PIX_FMT_GRAY8:
296 case AV_PIX_FMT_GRAY16BE:
297 case AV_PIX_FMT_GRAY16LE:
298 case AV_PIX_FMT_YUVJ420P:
299 case AV_PIX_FMT_YUVJ422P:
300 case AV_PIX_FMT_YUVJ440P:
301 case AV_PIX_FMT_YUVJ444P:
302 case AV_PIX_FMT_YUVA420P:
303 case AV_PIX_FMT_YUVA422P:
304 case AV_PIX_FMT_YUVA444P:
305 case AV_PIX_FMT_YUV420P9LE:
306 case AV_PIX_FMT_YUV420P9BE:
307 case AV_PIX_FMT_YUV420P10LE:
308 case AV_PIX_FMT_YUV420P10BE:
309 case AV_PIX_FMT_YUV420P12LE:
310 case AV_PIX_FMT_YUV420P12BE:
311 case AV_PIX_FMT_YUV420P14LE:
312 case AV_PIX_FMT_YUV420P14BE:
313 case AV_PIX_FMT_YUV420P16LE:
314 case AV_PIX_FMT_YUV420P16BE:
315 case AV_PIX_FMT_YUVA420P9LE:
316 case AV_PIX_FMT_YUVA420P9BE:
317 case AV_PIX_FMT_YUVA420P10LE:
318 case AV_PIX_FMT_YUVA420P10BE:
319 case AV_PIX_FMT_YUVA420P16LE:
320 case AV_PIX_FMT_YUVA420P16BE:
321 case AV_PIX_FMT_YUV422P9LE:
322 case AV_PIX_FMT_YUV422P9BE:
323 case AV_PIX_FMT_YUV422P10LE:
324 case AV_PIX_FMT_YUV422P10BE:
325 case AV_PIX_FMT_YUV422P12LE:
326 case AV_PIX_FMT_YUV422P12BE:
327 case AV_PIX_FMT_YUV422P14LE:
328 case AV_PIX_FMT_YUV422P14BE:
329 case AV_PIX_FMT_YUV422P16LE:
330 case AV_PIX_FMT_YUV422P16BE:
331 case AV_PIX_FMT_YUVA422P9LE:
332 case AV_PIX_FMT_YUVA422P9BE:
333 case AV_PIX_FMT_YUVA422P10LE:
334 case AV_PIX_FMT_YUVA422P10BE:
335 case AV_PIX_FMT_YUVA422P16LE:
336 case AV_PIX_FMT_YUVA422P16BE:
337 case AV_PIX_FMT_YUV444P9LE:
338 case AV_PIX_FMT_YUV444P9BE:
339 case AV_PIX_FMT_YUV444P10LE:
340 case AV_PIX_FMT_YUV444P10BE:
341 case AV_PIX_FMT_YUV444P12LE:
342 case AV_PIX_FMT_YUV444P12BE:
343 case AV_PIX_FMT_YUV444P14LE:
344 case AV_PIX_FMT_YUV444P14BE:
345 case AV_PIX_FMT_YUV444P16LE:
346 case AV_PIX_FMT_YUV444P16BE:
347 case AV_PIX_FMT_YUVA444P9LE:
348 case AV_PIX_FMT_YUVA444P9BE:
349 case AV_PIX_FMT_YUVA444P10LE:
350 case AV_PIX_FMT_YUVA444P10BE:
351 case AV_PIX_FMT_YUVA444P16LE:
352 case AV_PIX_FMT_YUVA444P16BE:
353 case AV_PIX_FMT_GBRP9LE:
354 case AV_PIX_FMT_GBRP9BE:
355 case AV_PIX_FMT_GBRP10LE:
356 case AV_PIX_FMT_GBRP10BE:
357 case AV_PIX_FMT_GBRP12LE:
358 case AV_PIX_FMT_GBRP12BE:
359 case AV_PIX_FMT_GBRP14LE:
360 case AV_PIX_FMT_GBRP14BE:
361 w_align = 16; //FIXME assume 16 pixel per macroblock
362 h_align = 16 * 2; // interlaced needs 2 macroblocks height
364 case AV_PIX_FMT_YUV411P:
365 case AV_PIX_FMT_YUVJ411P:
366 case AV_PIX_FMT_UYYVYY411:
370 case AV_PIX_FMT_YUV410P:
371 if (s->codec_id == AV_CODEC_ID_SVQ1) {
376 case AV_PIX_FMT_RGB555:
377 if (s->codec_id == AV_CODEC_ID_RPZA) {
382 case AV_PIX_FMT_PAL8:
383 case AV_PIX_FMT_BGR8:
384 case AV_PIX_FMT_RGB8:
385 if (s->codec_id == AV_CODEC_ID_SMC ||
386 s->codec_id == AV_CODEC_ID_CINEPAK) {
391 case AV_PIX_FMT_BGR24:
392 if ((s->codec_id == AV_CODEC_ID_MSZH) ||
393 (s->codec_id == AV_CODEC_ID_ZLIB)) {
398 case AV_PIX_FMT_RGB24:
399 if (s->codec_id == AV_CODEC_ID_CINEPAK) {
410 if (s->codec_id == AV_CODEC_ID_IFF_ILBM || s->codec_id == AV_CODEC_ID_IFF_BYTERUN1) {
411 w_align = FFMAX(w_align, 8);
414 *width = FFALIGN(*width, w_align);
415 *height = FFALIGN(*height, h_align);
416 if (s->codec_id == AV_CODEC_ID_H264 || s->lowres)
417 // some of the optimized chroma MC reads one line too much
418 // which is also done in mpeg decoders with lowres > 0
421 for (i = 0; i < 4; i++)
422 linesize_align[i] = STRIDE_ALIGN;
425 void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height)
427 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(s->pix_fmt);
428 int chroma_shift = desc->log2_chroma_w;
429 int linesize_align[AV_NUM_DATA_POINTERS];
432 avcodec_align_dimensions2(s, width, height, linesize_align);
433 align = FFMAX(linesize_align[0], linesize_align[3]);
434 linesize_align[1] <<= chroma_shift;
435 linesize_align[2] <<= chroma_shift;
436 align = FFMAX3(align, linesize_align[1], linesize_align[2]);
437 *width = FFALIGN(*width, align);
440 int avcodec_enum_to_chroma_pos(int *xpos, int *ypos, enum AVChromaLocation pos)
442 if (pos <= AVCHROMA_LOC_UNSPECIFIED || pos >= AVCHROMA_LOC_NB)
443 return AVERROR(EINVAL);
446 *xpos = (pos&1) * 128;
447 *ypos = ((pos>>1)^(pos<4)) * 128;
452 enum AVChromaLocation avcodec_chroma_pos_to_enum(int xpos, int ypos)
456 for (pos = AVCHROMA_LOC_UNSPECIFIED + 1; pos < AVCHROMA_LOC_NB; pos++) {
457 if (avcodec_enum_to_chroma_pos(&xout, &yout, pos) == 0 && xout == xpos && yout == ypos)
460 return AVCHROMA_LOC_UNSPECIFIED;
463 int avcodec_fill_audio_frame(AVFrame *frame, int nb_channels,
464 enum AVSampleFormat sample_fmt, const uint8_t *buf,
465 int buf_size, int align)
467 int ch, planar, needed_size, ret = 0;
469 needed_size = av_samples_get_buffer_size(NULL, nb_channels,
470 frame->nb_samples, sample_fmt,
472 if (buf_size < needed_size)
473 return AVERROR(EINVAL);
475 planar = av_sample_fmt_is_planar(sample_fmt);
476 if (planar && nb_channels > AV_NUM_DATA_POINTERS) {
477 if (!(frame->extended_data = av_mallocz_array(nb_channels,
478 sizeof(*frame->extended_data))))
479 return AVERROR(ENOMEM);
481 frame->extended_data = frame->data;
484 if ((ret = av_samples_fill_arrays(frame->extended_data, &frame->linesize[0],
485 (uint8_t *)(intptr_t)buf, nb_channels, frame->nb_samples,
486 sample_fmt, align)) < 0) {
487 if (frame->extended_data != frame->data)
488 av_freep(&frame->extended_data);
491 if (frame->extended_data != frame->data) {
492 for (ch = 0; ch < AV_NUM_DATA_POINTERS; ch++)
493 frame->data[ch] = frame->extended_data[ch];
499 static int update_frame_pool(AVCodecContext *avctx, AVFrame *frame)
501 FramePool *pool = avctx->internal->pool;
504 switch (avctx->codec_type) {
505 case AVMEDIA_TYPE_VIDEO: {
508 int w = frame->width;
509 int h = frame->height;
510 int tmpsize, unaligned;
512 if (pool->format == frame->format &&
513 pool->width == frame->width && pool->height == frame->height)
516 avcodec_align_dimensions2(avctx, &w, &h, pool->stride_align);
518 if (!(avctx->flags & CODEC_FLAG_EMU_EDGE)) {
524 // NOTE: do not align linesizes individually, this breaks e.g. assumptions
525 // that linesize[0] == 2*linesize[1] in the MPEG-encoder for 4:2:2
526 av_image_fill_linesizes(picture.linesize, avctx->pix_fmt, w);
527 // increase alignment of w for next try (rhs gives the lowest bit set in w)
531 for (i = 0; i < 4; i++)
532 unaligned |= picture.linesize[i] % pool->stride_align[i];
535 tmpsize = av_image_fill_pointers(picture.data, avctx->pix_fmt, h,
536 NULL, picture.linesize);
540 for (i = 0; i < 3 && picture.data[i + 1]; i++)
541 size[i] = picture.data[i + 1] - picture.data[i];
542 size[i] = tmpsize - (picture.data[i] - picture.data[0]);
544 for (i = 0; i < 4; i++) {
545 av_buffer_pool_uninit(&pool->pools[i]);
546 pool->linesize[i] = picture.linesize[i];
548 pool->pools[i] = av_buffer_pool_init(size[i] + 16 + STRIDE_ALIGN - 1,
549 CONFIG_MEMORY_POISONING ?
552 if (!pool->pools[i]) {
553 ret = AVERROR(ENOMEM);
558 pool->format = frame->format;
559 pool->width = frame->width;
560 pool->height = frame->height;
564 case AVMEDIA_TYPE_AUDIO: {
565 int ch = av_frame_get_channels(frame); //av_get_channel_layout_nb_channels(frame->channel_layout);
566 int planar = av_sample_fmt_is_planar(frame->format);
567 int planes = planar ? ch : 1;
569 if (pool->format == frame->format && pool->planes == planes &&
570 pool->channels == ch && frame->nb_samples == pool->samples)
573 av_buffer_pool_uninit(&pool->pools[0]);
574 ret = av_samples_get_buffer_size(&pool->linesize[0], ch,
575 frame->nb_samples, frame->format, 0);
579 pool->pools[0] = av_buffer_pool_init(pool->linesize[0], NULL);
580 if (!pool->pools[0]) {
581 ret = AVERROR(ENOMEM);
585 pool->format = frame->format;
586 pool->planes = planes;
588 pool->samples = frame->nb_samples;
591 default: av_assert0(0);
595 for (i = 0; i < 4; i++)
596 av_buffer_pool_uninit(&pool->pools[i]);
598 pool->planes = pool->channels = pool->samples = 0;
599 pool->width = pool->height = 0;
603 static int audio_get_buffer(AVCodecContext *avctx, AVFrame *frame)
605 FramePool *pool = avctx->internal->pool;
606 int planes = pool->planes;
609 frame->linesize[0] = pool->linesize[0];
611 if (planes > AV_NUM_DATA_POINTERS) {
612 frame->extended_data = av_mallocz_array(planes, sizeof(*frame->extended_data));
613 frame->nb_extended_buf = planes - AV_NUM_DATA_POINTERS;
614 frame->extended_buf = av_mallocz_array(frame->nb_extended_buf,
615 sizeof(*frame->extended_buf));
616 if (!frame->extended_data || !frame->extended_buf) {
617 av_freep(&frame->extended_data);
618 av_freep(&frame->extended_buf);
619 return AVERROR(ENOMEM);
622 frame->extended_data = frame->data;
623 av_assert0(frame->nb_extended_buf == 0);
626 for (i = 0; i < FFMIN(planes, AV_NUM_DATA_POINTERS); i++) {
627 frame->buf[i] = av_buffer_pool_get(pool->pools[0]);
630 frame->extended_data[i] = frame->data[i] = frame->buf[i]->data;
632 for (i = 0; i < frame->nb_extended_buf; i++) {
633 frame->extended_buf[i] = av_buffer_pool_get(pool->pools[0]);
634 if (!frame->extended_buf[i])
636 frame->extended_data[i + AV_NUM_DATA_POINTERS] = frame->extended_buf[i]->data;
639 if (avctx->debug & FF_DEBUG_BUFFERS)
640 av_log(avctx, AV_LOG_DEBUG, "default_get_buffer called on frame %p", frame);
644 av_frame_unref(frame);
645 return AVERROR(ENOMEM);
648 static int video_get_buffer(AVCodecContext *s, AVFrame *pic)
650 FramePool *pool = s->internal->pool;
651 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pic->format);
652 int pixel_size = desc->comp[0].step_minus1 + 1;
653 int h_chroma_shift, v_chroma_shift;
656 if (pic->data[0] != NULL) {
657 av_log(s, AV_LOG_ERROR, "pic->data[0]!=NULL in avcodec_default_get_buffer\n");
661 memset(pic->data, 0, sizeof(pic->data));
662 pic->extended_data = pic->data;
664 av_pix_fmt_get_chroma_sub_sample(s->pix_fmt, &h_chroma_shift, &v_chroma_shift);
666 for (i = 0; i < 4 && pool->pools[i]; i++) {
667 const int h_shift = i == 0 ? 0 : h_chroma_shift;
668 const int v_shift = i == 0 ? 0 : v_chroma_shift;
669 int is_planar = pool->pools[2] || (i==0 && s->pix_fmt == AV_PIX_FMT_GRAY8);
671 pic->linesize[i] = pool->linesize[i];
673 pic->buf[i] = av_buffer_pool_get(pool->pools[i]);
677 // no edge if EDGE EMU or not planar YUV
678 if ((s->flags & CODEC_FLAG_EMU_EDGE) || !is_planar)
679 pic->data[i] = pic->buf[i]->data;
681 pic->data[i] = pic->buf[i]->data +
682 FFALIGN((pic->linesize[i] * EDGE_WIDTH >> v_shift) +
683 (pixel_size * EDGE_WIDTH >> h_shift), pool->stride_align[i]);
686 for (; i < AV_NUM_DATA_POINTERS; i++) {
688 pic->linesize[i] = 0;
690 if (pic->data[1] && !pic->data[2])
691 avpriv_set_systematic_pal2((uint32_t *)pic->data[1], s->pix_fmt);
693 if (s->debug & FF_DEBUG_BUFFERS)
694 av_log(s, AV_LOG_DEBUG, "default_get_buffer called on pic %p\n", pic);
699 return AVERROR(ENOMEM);
702 void avpriv_color_frame(AVFrame *frame, const int c[4])
704 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(frame->format);
707 av_assert0(desc->flags & AV_PIX_FMT_FLAG_PLANAR);
709 for (p = 0; p<desc->nb_components; p++) {
710 uint8_t *dst = frame->data[p];
711 int is_chroma = p == 1 || p == 2;
712 int bytes = is_chroma ? FF_CEIL_RSHIFT(frame->width, desc->log2_chroma_w) : frame->width;
713 int height = is_chroma ? FF_CEIL_RSHIFT(frame->height, desc->log2_chroma_h) : frame->height;
714 for (y = 0; y < height; y++) {
715 if (desc->comp[0].depth_minus1 >= 8) {
716 for (x = 0; x<bytes; x++)
717 ((uint16_t*)dst)[x] = c[p];
719 memset(dst, c[p], bytes);
720 dst += frame->linesize[p];
725 int avcodec_default_get_buffer2(AVCodecContext *avctx, AVFrame *frame, int flags)
729 if ((ret = update_frame_pool(avctx, frame)) < 0)
732 #if FF_API_GET_BUFFER
733 FF_DISABLE_DEPRECATION_WARNINGS
734 frame->type = FF_BUFFER_TYPE_INTERNAL;
735 FF_ENABLE_DEPRECATION_WARNINGS
738 switch (avctx->codec_type) {
739 case AVMEDIA_TYPE_VIDEO:
740 return video_get_buffer(avctx, frame);
741 case AVMEDIA_TYPE_AUDIO:
742 return audio_get_buffer(avctx, frame);
748 int ff_init_buffer_info(AVCodecContext *avctx, AVFrame *frame)
750 AVPacket *pkt = avctx->internal->pkt;
754 AVFrameSideData *frame_sd;
756 frame->pkt_pts = pkt->pts;
757 av_frame_set_pkt_pos (frame, pkt->pos);
758 av_frame_set_pkt_duration(frame, pkt->duration);
759 av_frame_set_pkt_size (frame, pkt->size);
761 /* copy the replaygain data to the output frame */
762 packet_sd = av_packet_get_side_data(pkt, AV_PKT_DATA_REPLAYGAIN, &size);
764 frame_sd = av_frame_new_side_data(frame, AV_FRAME_DATA_REPLAYGAIN, size);
766 return AVERROR(ENOMEM);
768 memcpy(frame_sd->data, packet_sd, size);
771 frame->pkt_pts = AV_NOPTS_VALUE;
772 av_frame_set_pkt_pos (frame, -1);
773 av_frame_set_pkt_duration(frame, 0);
774 av_frame_set_pkt_size (frame, -1);
776 frame->reordered_opaque = avctx->reordered_opaque;
778 switch (avctx->codec->type) {
779 case AVMEDIA_TYPE_VIDEO:
780 frame->format = avctx->pix_fmt;
781 if (!frame->sample_aspect_ratio.num)
782 frame->sample_aspect_ratio = avctx->sample_aspect_ratio;
783 if (av_frame_get_colorspace(frame) == AVCOL_SPC_UNSPECIFIED)
784 av_frame_set_colorspace(frame, avctx->colorspace);
785 if (av_frame_get_color_range(frame) == AVCOL_RANGE_UNSPECIFIED)
786 av_frame_set_color_range(frame, avctx->color_range);
788 case AVMEDIA_TYPE_AUDIO:
789 if (!frame->sample_rate)
790 frame->sample_rate = avctx->sample_rate;
791 if (frame->format < 0)
792 frame->format = avctx->sample_fmt;
793 if (!frame->channel_layout) {
794 if (avctx->channel_layout) {
795 if (av_get_channel_layout_nb_channels(avctx->channel_layout) !=
797 av_log(avctx, AV_LOG_ERROR, "Inconsistent channel "
799 return AVERROR(EINVAL);
802 frame->channel_layout = avctx->channel_layout;
804 if (avctx->channels > FF_SANE_NB_CHANNELS) {
805 av_log(avctx, AV_LOG_ERROR, "Too many channels: %d.\n",
807 return AVERROR(ENOSYS);
811 av_frame_set_channels(frame, avctx->channels);
817 #if FF_API_GET_BUFFER
818 FF_DISABLE_DEPRECATION_WARNINGS
819 int avcodec_default_get_buffer(AVCodecContext *avctx, AVFrame *frame)
821 return avcodec_default_get_buffer2(avctx, frame, 0);
824 typedef struct CompatReleaseBufPriv {
825 AVCodecContext avctx;
827 uint8_t avframe_padding[1024]; // hack to allow linking to a avutil with larger AVFrame
828 } CompatReleaseBufPriv;
830 static void compat_free_buffer(void *opaque, uint8_t *data)
832 CompatReleaseBufPriv *priv = opaque;
833 if (priv->avctx.release_buffer)
834 priv->avctx.release_buffer(&priv->avctx, &priv->frame);
838 static void compat_release_buffer(void *opaque, uint8_t *data)
840 AVBufferRef *buf = opaque;
841 av_buffer_unref(&buf);
843 FF_ENABLE_DEPRECATION_WARNINGS
846 int ff_decode_frame_props(AVCodecContext *avctx, AVFrame *frame)
848 return ff_init_buffer_info(avctx, frame);
851 static int get_buffer_internal(AVCodecContext *avctx, AVFrame *frame, int flags)
853 const AVHWAccel *hwaccel = avctx->hwaccel;
854 int override_dimensions = 1;
857 if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
858 if ((ret = av_image_check_size(avctx->width, avctx->height, 0, avctx)) < 0 || avctx->pix_fmt<0) {
859 av_log(avctx, AV_LOG_ERROR, "video_get_buffer: image parameters invalid\n");
860 return AVERROR(EINVAL);
863 if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
864 if (frame->width <= 0 || frame->height <= 0) {
865 frame->width = FFMAX(avctx->width, FF_CEIL_RSHIFT(avctx->coded_width, avctx->lowres));
866 frame->height = FFMAX(avctx->height, FF_CEIL_RSHIFT(avctx->coded_height, avctx->lowres));
867 override_dimensions = 0;
870 ret = ff_decode_frame_props(avctx, frame);
873 if ((ret = ff_init_buffer_info(avctx, frame)) < 0)
876 if (hwaccel && hwaccel->alloc_frame) {
877 ret = hwaccel->alloc_frame(avctx, frame);
881 #if FF_API_GET_BUFFER
882 FF_DISABLE_DEPRECATION_WARNINGS
884 * Wrap an old get_buffer()-allocated buffer in a bunch of AVBuffers.
885 * We wrap each plane in its own AVBuffer. Each of those has a reference to
886 * a dummy AVBuffer as its private data, unreffing it on free.
887 * When all the planes are freed, the dummy buffer's free callback calls
890 if (avctx->get_buffer) {
891 CompatReleaseBufPriv *priv = NULL;
892 AVBufferRef *dummy_buf = NULL;
895 if (flags & AV_GET_BUFFER_FLAG_REF)
896 frame->reference = 1;
898 ret = avctx->get_buffer(avctx, frame);
902 /* return if the buffers are already set up
903 * this would happen e.g. when a custom get_buffer() calls
904 * avcodec_default_get_buffer
909 priv = av_mallocz(sizeof(*priv));
911 ret = AVERROR(ENOMEM);
914 priv->avctx = *avctx;
915 priv->frame = *frame;
917 dummy_buf = av_buffer_create(NULL, 0, compat_free_buffer, priv, 0);
919 ret = AVERROR(ENOMEM);
923 #define WRAP_PLANE(ref_out, data, data_size) \
925 AVBufferRef *dummy_ref = av_buffer_ref(dummy_buf); \
927 ret = AVERROR(ENOMEM); \
930 ref_out = av_buffer_create(data, data_size, compat_release_buffer, \
933 av_frame_unref(frame); \
934 ret = AVERROR(ENOMEM); \
939 if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
940 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(frame->format);
942 planes = av_pix_fmt_count_planes(frame->format);
943 /* workaround for AVHWAccel plane count of 0, buf[0] is used as
944 check for allocated buffers: make libavcodec happy */
945 if (desc && desc->flags & AV_PIX_FMT_FLAG_HWACCEL)
947 if (!desc || planes <= 0) {
948 ret = AVERROR(EINVAL);
952 for (i = 0; i < planes; i++) {
953 int v_shift = (i == 1 || i == 2) ? desc->log2_chroma_h : 0;
954 int plane_size = (frame->height >> v_shift) * frame->linesize[i];
956 WRAP_PLANE(frame->buf[i], frame->data[i], plane_size);
959 int planar = av_sample_fmt_is_planar(frame->format);
960 planes = planar ? avctx->channels : 1;
962 if (planes > FF_ARRAY_ELEMS(frame->buf)) {
963 frame->nb_extended_buf = planes - FF_ARRAY_ELEMS(frame->buf);
964 frame->extended_buf = av_malloc_array(sizeof(*frame->extended_buf),
965 frame->nb_extended_buf);
966 if (!frame->extended_buf) {
967 ret = AVERROR(ENOMEM);
972 for (i = 0; i < FFMIN(planes, FF_ARRAY_ELEMS(frame->buf)); i++)
973 WRAP_PLANE(frame->buf[i], frame->extended_data[i], frame->linesize[0]);
975 for (i = 0; i < frame->nb_extended_buf; i++)
976 WRAP_PLANE(frame->extended_buf[i],
977 frame->extended_data[i + FF_ARRAY_ELEMS(frame->buf)],
981 av_buffer_unref(&dummy_buf);
984 frame->width = avctx->width;
985 frame->height = avctx->height;
990 avctx->release_buffer(avctx, frame);
992 av_buffer_unref(&dummy_buf);
995 FF_ENABLE_DEPRECATION_WARNINGS
998 ret = avctx->get_buffer2(avctx, frame, flags);
1001 if (avctx->codec_type == AVMEDIA_TYPE_VIDEO && !override_dimensions) {
1002 frame->width = avctx->width;
1003 frame->height = avctx->height;
1009 int ff_get_buffer(AVCodecContext *avctx, AVFrame *frame, int flags)
1011 int ret = get_buffer_internal(avctx, frame, flags);
1013 av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
1017 static int reget_buffer_internal(AVCodecContext *avctx, AVFrame *frame)
1022 av_assert0(avctx->codec_type == AVMEDIA_TYPE_VIDEO);
1024 if (frame->data[0] && (frame->width != avctx->width || frame->height != avctx->height || frame->format != avctx->pix_fmt)) {
1025 av_log(avctx, AV_LOG_WARNING, "Picture changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s in reget buffer()\n",
1026 frame->width, frame->height, av_get_pix_fmt_name(frame->format), avctx->width, avctx->height, av_get_pix_fmt_name(avctx->pix_fmt));
1027 av_frame_unref(frame);
1030 ff_init_buffer_info(avctx, frame);
1032 if (!frame->data[0])
1033 return ff_get_buffer(avctx, frame, AV_GET_BUFFER_FLAG_REF);
1035 if (av_frame_is_writable(frame))
1036 return ff_decode_frame_props(avctx, frame);
1038 tmp = av_frame_alloc();
1040 return AVERROR(ENOMEM);
1042 av_frame_move_ref(tmp, frame);
1044 ret = ff_get_buffer(avctx, frame, AV_GET_BUFFER_FLAG_REF);
1046 av_frame_free(&tmp);
1050 av_frame_copy(frame, tmp);
1051 av_frame_free(&tmp);
1056 int ff_reget_buffer(AVCodecContext *avctx, AVFrame *frame)
1058 int ret = reget_buffer_internal(avctx, frame);
1060 av_log(avctx, AV_LOG_ERROR, "reget_buffer() failed\n");
1064 #if FF_API_GET_BUFFER
1065 void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic)
1067 av_assert0(s->codec_type == AVMEDIA_TYPE_VIDEO);
1069 av_frame_unref(pic);
1072 int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic)
1079 int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2), void *arg, int *ret, int count, int size)
1083 for (i = 0; i < count; i++) {
1084 int r = func(c, (char *)arg + i * size);
1091 int avcodec_default_execute2(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2, int jobnr, int threadnr), void *arg, int *ret, int count)
1095 for (i = 0; i < count; i++) {
1096 int r = func(c, arg, i, 0);
1103 enum AVPixelFormat avpriv_find_pix_fmt(const PixelFormatTag *tags,
1104 unsigned int fourcc)
1106 while (tags->pix_fmt >= 0) {
1107 if (tags->fourcc == fourcc)
1108 return tags->pix_fmt;
1111 return AV_PIX_FMT_NONE;
1114 static int is_hwaccel_pix_fmt(enum AVPixelFormat pix_fmt)
1116 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
1117 return desc->flags & AV_PIX_FMT_FLAG_HWACCEL;
1120 enum AVPixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum AVPixelFormat *fmt)
1122 while (*fmt != AV_PIX_FMT_NONE && is_hwaccel_pix_fmt(*fmt))
1127 static AVHWAccel *find_hwaccel(enum AVCodecID codec_id,
1128 enum AVPixelFormat pix_fmt)
1130 AVHWAccel *hwaccel = NULL;
1132 while ((hwaccel = av_hwaccel_next(hwaccel)))
1133 if (hwaccel->id == codec_id
1134 && hwaccel->pix_fmt == pix_fmt)
1140 int ff_get_format(AVCodecContext *avctx, const enum AVPixelFormat *fmt)
1142 const AVPixFmtDescriptor *desc;
1143 enum AVPixelFormat ret = avctx->get_format(avctx, fmt);
1145 desc = av_pix_fmt_desc_get(ret);
1147 return AV_PIX_FMT_NONE;
1149 if (avctx->hwaccel && avctx->hwaccel->uninit)
1150 avctx->hwaccel->uninit(avctx);
1151 av_freep(&avctx->internal->hwaccel_priv_data);
1152 avctx->hwaccel = NULL;
1154 if (desc->flags & AV_PIX_FMT_FLAG_HWACCEL) {
1158 hwaccel = find_hwaccel(avctx->codec_id, ret);
1160 av_log(avctx, AV_LOG_ERROR,
1161 "Could not find an AVHWAccel for the pixel format: %s",
1163 return AV_PIX_FMT_NONE;
1166 if (hwaccel->priv_data_size) {
1167 avctx->internal->hwaccel_priv_data = av_mallocz(hwaccel->priv_data_size);
1168 if (!avctx->internal->hwaccel_priv_data)
1169 return AV_PIX_FMT_NONE;
1172 if (hwaccel->init) {
1173 err = hwaccel->init(avctx);
1175 av_freep(&avctx->internal->hwaccel_priv_data);
1176 return AV_PIX_FMT_NONE;
1179 avctx->hwaccel = hwaccel;
1185 #if FF_API_AVFRAME_LAVC
1186 void avcodec_get_frame_defaults(AVFrame *frame)
1188 #if LIBAVCODEC_VERSION_MAJOR >= 55
1189 // extended_data should explicitly be freed when needed, this code is unsafe currently
1190 // also this is not compatible to the <55 ABI/API
1191 if (frame->extended_data != frame->data && 0)
1192 av_freep(&frame->extended_data);
1195 memset(frame, 0, sizeof(AVFrame));
1196 av_frame_unref(frame);
1199 AVFrame *avcodec_alloc_frame(void)
1201 return av_frame_alloc();
1204 void avcodec_free_frame(AVFrame **frame)
1206 av_frame_free(frame);
1210 MAKE_ACCESSORS(AVCodecContext, codec, AVRational, pkt_timebase)
1211 MAKE_ACCESSORS(AVCodecContext, codec, const AVCodecDescriptor *, codec_descriptor)
1212 MAKE_ACCESSORS(AVCodecContext, codec, int, lowres)
1213 MAKE_ACCESSORS(AVCodecContext, codec, int, seek_preroll)
1214 MAKE_ACCESSORS(AVCodecContext, codec, uint16_t*, chroma_intra_matrix)
1216 int av_codec_get_max_lowres(const AVCodec *codec)
1218 return codec->max_lowres;
1221 static void avcodec_get_subtitle_defaults(AVSubtitle *sub)
1223 memset(sub, 0, sizeof(*sub));
1224 sub->pts = AV_NOPTS_VALUE;
1227 static int get_bit_rate(AVCodecContext *ctx)
1230 int bits_per_sample;
1232 switch (ctx->codec_type) {
1233 case AVMEDIA_TYPE_VIDEO:
1234 case AVMEDIA_TYPE_DATA:
1235 case AVMEDIA_TYPE_SUBTITLE:
1236 case AVMEDIA_TYPE_ATTACHMENT:
1237 bit_rate = ctx->bit_rate;
1239 case AVMEDIA_TYPE_AUDIO:
1240 bits_per_sample = av_get_bits_per_sample(ctx->codec_id);
1241 bit_rate = bits_per_sample ? ctx->sample_rate * ctx->channels * bits_per_sample : ctx->bit_rate;
1250 int attribute_align_arg ff_codec_open2_recursive(AVCodecContext *avctx, const AVCodec *codec, AVDictionary **options)
1254 ff_unlock_avcodec();
1256 ret = avcodec_open2(avctx, codec, options);
1258 ff_lock_avcodec(avctx);
1262 int attribute_align_arg avcodec_open2(AVCodecContext *avctx, const AVCodec *codec, AVDictionary **options)
1265 AVDictionary *tmp = NULL;
1267 if (avcodec_is_open(avctx))
1270 if ((!codec && !avctx->codec)) {
1271 av_log(avctx, AV_LOG_ERROR, "No codec provided to avcodec_open2()\n");
1272 return AVERROR(EINVAL);
1274 if ((codec && avctx->codec && codec != avctx->codec)) {
1275 av_log(avctx, AV_LOG_ERROR, "This AVCodecContext was allocated for %s, "
1276 "but %s passed to avcodec_open2()\n", avctx->codec->name, codec->name);
1277 return AVERROR(EINVAL);
1280 codec = avctx->codec;
1282 if (avctx->extradata_size < 0 || avctx->extradata_size >= FF_MAX_EXTRADATA_SIZE)
1283 return AVERROR(EINVAL);
1286 av_dict_copy(&tmp, *options, 0);
1288 ret = ff_lock_avcodec(avctx);
1292 avctx->internal = av_mallocz(sizeof(AVCodecInternal));
1293 if (!avctx->internal) {
1294 ret = AVERROR(ENOMEM);
1298 avctx->internal->pool = av_mallocz(sizeof(*avctx->internal->pool));
1299 if (!avctx->internal->pool) {
1300 ret = AVERROR(ENOMEM);
1304 avctx->internal->to_free = av_frame_alloc();
1305 if (!avctx->internal->to_free) {
1306 ret = AVERROR(ENOMEM);
1310 if (codec->priv_data_size > 0) {
1311 if (!avctx->priv_data) {
1312 avctx->priv_data = av_mallocz(codec->priv_data_size);
1313 if (!avctx->priv_data) {
1314 ret = AVERROR(ENOMEM);
1317 if (codec->priv_class) {
1318 *(const AVClass **)avctx->priv_data = codec->priv_class;
1319 av_opt_set_defaults(avctx->priv_data);
1322 if (codec->priv_class && (ret = av_opt_set_dict(avctx->priv_data, &tmp)) < 0)
1325 avctx->priv_data = NULL;
1327 if ((ret = av_opt_set_dict(avctx, &tmp)) < 0)
1330 // only call ff_set_dimensions() for non H.264/VP6F codecs so as not to overwrite previously setup dimensions
1331 if (!(avctx->coded_width && avctx->coded_height && avctx->width && avctx->height &&
1332 (avctx->codec_id == AV_CODEC_ID_H264 || avctx->codec_id == AV_CODEC_ID_VP6F))) {
1333 if (avctx->coded_width && avctx->coded_height)
1334 ret = ff_set_dimensions(avctx, avctx->coded_width, avctx->coded_height);
1335 else if (avctx->width && avctx->height)
1336 ret = ff_set_dimensions(avctx, avctx->width, avctx->height);
1341 if ((avctx->coded_width || avctx->coded_height || avctx->width || avctx->height)
1342 && ( av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx) < 0
1343 || av_image_check_size(avctx->width, avctx->height, 0, avctx) < 0)) {
1344 av_log(avctx, AV_LOG_WARNING, "Ignoring invalid width/height values\n");
1345 ff_set_dimensions(avctx, 0, 0);
1348 /* if the decoder init function was already called previously,
1349 * free the already allocated subtitle_header before overwriting it */
1350 if (av_codec_is_decoder(codec))
1351 av_freep(&avctx->subtitle_header);
1353 if (avctx->channels > FF_SANE_NB_CHANNELS) {
1354 ret = AVERROR(EINVAL);
1358 avctx->codec = codec;
1359 if ((avctx->codec_type == AVMEDIA_TYPE_UNKNOWN || avctx->codec_type == codec->type) &&
1360 avctx->codec_id == AV_CODEC_ID_NONE) {
1361 avctx->codec_type = codec->type;
1362 avctx->codec_id = codec->id;
1364 if (avctx->codec_id != codec->id || (avctx->codec_type != codec->type
1365 && avctx->codec_type != AVMEDIA_TYPE_ATTACHMENT)) {
1366 av_log(avctx, AV_LOG_ERROR, "Codec type or id mismatches\n");
1367 ret = AVERROR(EINVAL);
1370 avctx->frame_number = 0;
1371 avctx->codec_descriptor = avcodec_descriptor_get(avctx->codec_id);
1373 if (avctx->codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
1374 avctx->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
1375 const char *codec_string = av_codec_is_encoder(codec) ? "encoder" : "decoder";
1377 av_log(avctx, AV_LOG_ERROR,
1378 "The %s '%s' is experimental but experimental codecs are not enabled, "
1379 "add '-strict %d' if you want to use it.\n",
1380 codec_string, codec->name, FF_COMPLIANCE_EXPERIMENTAL);
1381 codec2 = av_codec_is_encoder(codec) ? avcodec_find_encoder(codec->id) : avcodec_find_decoder(codec->id);
1382 if (!(codec2->capabilities & CODEC_CAP_EXPERIMENTAL))
1383 av_log(avctx, AV_LOG_ERROR, "Alternatively use the non experimental %s '%s'.\n",
1384 codec_string, codec2->name);
1385 ret = AVERROR_EXPERIMENTAL;
1389 if (avctx->codec_type == AVMEDIA_TYPE_AUDIO &&
1390 (!avctx->time_base.num || !avctx->time_base.den)) {
1391 avctx->time_base.num = 1;
1392 avctx->time_base.den = avctx->sample_rate;
1396 av_log(avctx, AV_LOG_WARNING, "Warning: not compiled with thread support, using thread emulation\n");
1398 if (CONFIG_FRAME_THREAD_ENCODER) {
1399 ff_unlock_avcodec(); //we will instanciate a few encoders thus kick the counter to prevent false detection of a problem
1400 ret = ff_frame_thread_encoder_init(avctx, options ? *options : NULL);
1401 ff_lock_avcodec(avctx);
1407 && !(avctx->internal->frame_thread_encoder && (avctx->active_thread_type&FF_THREAD_FRAME))) {
1408 ret = ff_thread_init(avctx);
1413 if (!HAVE_THREADS && !(codec->capabilities & CODEC_CAP_AUTO_THREADS))
1414 avctx->thread_count = 1;
1416 if (avctx->codec->max_lowres < avctx->lowres || avctx->lowres < 0) {
1417 av_log(avctx, AV_LOG_ERROR, "The maximum value for lowres supported by the decoder is %d\n",
1418 avctx->codec->max_lowres);
1419 ret = AVERROR(EINVAL);
1423 if (av_codec_is_encoder(avctx->codec)) {
1425 if (avctx->codec->sample_fmts) {
1426 for (i = 0; avctx->codec->sample_fmts[i] != AV_SAMPLE_FMT_NONE; i++) {
1427 if (avctx->sample_fmt == avctx->codec->sample_fmts[i])
1429 if (avctx->channels == 1 &&
1430 av_get_planar_sample_fmt(avctx->sample_fmt) ==
1431 av_get_planar_sample_fmt(avctx->codec->sample_fmts[i])) {
1432 avctx->sample_fmt = avctx->codec->sample_fmts[i];
1436 if (avctx->codec->sample_fmts[i] == AV_SAMPLE_FMT_NONE) {
1438 snprintf(buf, sizeof(buf), "%d", avctx->sample_fmt);
1439 av_log(avctx, AV_LOG_ERROR, "Specified sample format %s is invalid or not supported\n",
1440 (char *)av_x_if_null(av_get_sample_fmt_name(avctx->sample_fmt), buf));
1441 ret = AVERROR(EINVAL);
1445 if (avctx->codec->pix_fmts) {
1446 for (i = 0; avctx->codec->pix_fmts[i] != AV_PIX_FMT_NONE; i++)
1447 if (avctx->pix_fmt == avctx->codec->pix_fmts[i])
1449 if (avctx->codec->pix_fmts[i] == AV_PIX_FMT_NONE
1450 && !((avctx->codec_id == AV_CODEC_ID_MJPEG || avctx->codec_id == AV_CODEC_ID_LJPEG)
1451 && avctx->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL)) {
1453 snprintf(buf, sizeof(buf), "%d", avctx->pix_fmt);
1454 av_log(avctx, AV_LOG_ERROR, "Specified pixel format %s is invalid or not supported\n",
1455 (char *)av_x_if_null(av_get_pix_fmt_name(avctx->pix_fmt), buf));
1456 ret = AVERROR(EINVAL);
1460 if (avctx->codec->supported_samplerates) {
1461 for (i = 0; avctx->codec->supported_samplerates[i] != 0; i++)
1462 if (avctx->sample_rate == avctx->codec->supported_samplerates[i])
1464 if (avctx->codec->supported_samplerates[i] == 0) {
1465 av_log(avctx, AV_LOG_ERROR, "Specified sample rate %d is not supported\n",
1466 avctx->sample_rate);
1467 ret = AVERROR(EINVAL);
1471 if (avctx->codec->channel_layouts) {
1472 if (!avctx->channel_layout) {
1473 av_log(avctx, AV_LOG_WARNING, "Channel layout not specified\n");
1475 for (i = 0; avctx->codec->channel_layouts[i] != 0; i++)
1476 if (avctx->channel_layout == avctx->codec->channel_layouts[i])
1478 if (avctx->codec->channel_layouts[i] == 0) {
1480 av_get_channel_layout_string(buf, sizeof(buf), -1, avctx->channel_layout);
1481 av_log(avctx, AV_LOG_ERROR, "Specified channel layout '%s' is not supported\n", buf);
1482 ret = AVERROR(EINVAL);
1487 if (avctx->channel_layout && avctx->channels) {
1488 int channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
1489 if (channels != avctx->channels) {
1491 av_get_channel_layout_string(buf, sizeof(buf), -1, avctx->channel_layout);
1492 av_log(avctx, AV_LOG_ERROR,
1493 "Channel layout '%s' with %d channels does not match number of specified channels %d\n",
1494 buf, channels, avctx->channels);
1495 ret = AVERROR(EINVAL);
1498 } else if (avctx->channel_layout) {
1499 avctx->channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
1501 if(avctx->codec_type == AVMEDIA_TYPE_VIDEO &&
1502 avctx->codec_id != AV_CODEC_ID_PNG // For mplayer
1504 if (avctx->width <= 0 || avctx->height <= 0) {
1505 av_log(avctx, AV_LOG_ERROR, "dimensions not set\n");
1506 ret = AVERROR(EINVAL);
1510 if ( (avctx->codec_type == AVMEDIA_TYPE_VIDEO || avctx->codec_type == AVMEDIA_TYPE_AUDIO)
1511 && avctx->bit_rate>0 && avctx->bit_rate<1000) {
1512 av_log(avctx, AV_LOG_WARNING, "Bitrate %d is extremely low, maybe you mean %dk\n", avctx->bit_rate, avctx->bit_rate);
1515 if (!avctx->rc_initial_buffer_occupancy)
1516 avctx->rc_initial_buffer_occupancy = avctx->rc_buffer_size * 3 / 4;
1519 avctx->pts_correction_num_faulty_pts =
1520 avctx->pts_correction_num_faulty_dts = 0;
1521 avctx->pts_correction_last_pts =
1522 avctx->pts_correction_last_dts = INT64_MIN;
1524 if ( avctx->codec->init && (!(avctx->active_thread_type&FF_THREAD_FRAME)
1525 || avctx->internal->frame_thread_encoder)) {
1526 ret = avctx->codec->init(avctx);
1534 if (av_codec_is_decoder(avctx->codec)) {
1535 if (!avctx->bit_rate)
1536 avctx->bit_rate = get_bit_rate(avctx);
1537 /* validate channel layout from the decoder */
1538 if (avctx->channel_layout) {
1539 int channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
1540 if (!avctx->channels)
1541 avctx->channels = channels;
1542 else if (channels != avctx->channels) {
1544 av_get_channel_layout_string(buf, sizeof(buf), -1, avctx->channel_layout);
1545 av_log(avctx, AV_LOG_WARNING,
1546 "Channel layout '%s' with %d channels does not match specified number of channels %d: "
1547 "ignoring specified channel layout\n",
1548 buf, channels, avctx->channels);
1549 avctx->channel_layout = 0;
1552 if (avctx->channels && avctx->channels < 0 ||
1553 avctx->channels > FF_SANE_NB_CHANNELS) {
1554 ret = AVERROR(EINVAL);
1557 if (avctx->sub_charenc) {
1558 if (avctx->codec_type != AVMEDIA_TYPE_SUBTITLE) {
1559 av_log(avctx, AV_LOG_ERROR, "Character encoding is only "
1560 "supported with subtitles codecs\n");
1561 ret = AVERROR(EINVAL);
1563 } else if (avctx->codec_descriptor->props & AV_CODEC_PROP_BITMAP_SUB) {
1564 av_log(avctx, AV_LOG_WARNING, "Codec '%s' is bitmap-based, "
1565 "subtitles character encoding will be ignored\n",
1566 avctx->codec_descriptor->name);
1567 avctx->sub_charenc_mode = FF_SUB_CHARENC_MODE_DO_NOTHING;
1569 /* input character encoding is set for a text based subtitle
1570 * codec at this point */
1571 if (avctx->sub_charenc_mode == FF_SUB_CHARENC_MODE_AUTOMATIC)
1572 avctx->sub_charenc_mode = FF_SUB_CHARENC_MODE_PRE_DECODER;
1574 if (avctx->sub_charenc_mode == FF_SUB_CHARENC_MODE_PRE_DECODER) {
1576 iconv_t cd = iconv_open("UTF-8", avctx->sub_charenc);
1577 if (cd == (iconv_t)-1) {
1578 av_log(avctx, AV_LOG_ERROR, "Unable to open iconv context "
1579 "with input character encoding \"%s\"\n", avctx->sub_charenc);
1580 ret = AVERROR(errno);
1585 av_log(avctx, AV_LOG_ERROR, "Character encoding subtitles "
1586 "conversion needs a libavcodec built with iconv support "
1587 "for this codec\n");
1588 ret = AVERROR(ENOSYS);
1596 ff_unlock_avcodec();
1598 av_dict_free(options);
1605 av_freep(&avctx->priv_data);
1606 if (avctx->internal) {
1607 av_frame_free(&avctx->internal->to_free);
1608 av_freep(&avctx->internal->pool);
1610 av_freep(&avctx->internal);
1611 avctx->codec = NULL;
1615 int ff_alloc_packet2(AVCodecContext *avctx, AVPacket *avpkt, int64_t size)
1617 if (avpkt->size < 0) {
1618 av_log(avctx, AV_LOG_ERROR, "Invalid negative user packet size %d\n", avpkt->size);
1619 return AVERROR(EINVAL);
1621 if (size < 0 || size > INT_MAX - FF_INPUT_BUFFER_PADDING_SIZE) {
1622 av_log(avctx, AV_LOG_ERROR, "Invalid minimum required packet size %"PRId64" (max allowed is %d)\n",
1623 size, INT_MAX - FF_INPUT_BUFFER_PADDING_SIZE);
1624 return AVERROR(EINVAL);
1628 av_assert0(!avpkt->data || avpkt->data != avctx->internal->byte_buffer);
1629 if (!avpkt->data || avpkt->size < size) {
1630 av_fast_padded_malloc(&avctx->internal->byte_buffer, &avctx->internal->byte_buffer_size, size);
1631 avpkt->data = avctx->internal->byte_buffer;
1632 avpkt->size = avctx->internal->byte_buffer_size;
1633 avpkt->destruct = NULL;
1638 AVBufferRef *buf = avpkt->buf;
1639 #if FF_API_DESTRUCT_PACKET
1640 FF_DISABLE_DEPRECATION_WARNINGS
1641 void *destruct = avpkt->destruct;
1642 FF_ENABLE_DEPRECATION_WARNINGS
1645 if (avpkt->size < size) {
1646 av_log(avctx, AV_LOG_ERROR, "User packet is too small (%d < %"PRId64")\n", avpkt->size, size);
1647 return AVERROR(EINVAL);
1650 av_init_packet(avpkt);
1651 #if FF_API_DESTRUCT_PACKET
1652 FF_DISABLE_DEPRECATION_WARNINGS
1653 avpkt->destruct = destruct;
1654 FF_ENABLE_DEPRECATION_WARNINGS
1660 int ret = av_new_packet(avpkt, size);
1662 av_log(avctx, AV_LOG_ERROR, "Failed to allocate packet of size %"PRId64"\n", size);
1667 int ff_alloc_packet(AVPacket *avpkt, int size)
1669 return ff_alloc_packet2(NULL, avpkt, size);
1673 * Pad last frame with silence.
1675 static int pad_last_frame(AVCodecContext *s, AVFrame **dst, const AVFrame *src)
1677 AVFrame *frame = NULL;
1680 if (!(frame = av_frame_alloc()))
1681 return AVERROR(ENOMEM);
1683 frame->format = src->format;
1684 frame->channel_layout = src->channel_layout;
1685 av_frame_set_channels(frame, av_frame_get_channels(src));
1686 frame->nb_samples = s->frame_size;
1687 ret = av_frame_get_buffer(frame, 32);
1691 ret = av_frame_copy_props(frame, src);
1695 if ((ret = av_samples_copy(frame->extended_data, src->extended_data, 0, 0,
1696 src->nb_samples, s->channels, s->sample_fmt)) < 0)
1698 if ((ret = av_samples_set_silence(frame->extended_data, src->nb_samples,
1699 frame->nb_samples - src->nb_samples,
1700 s->channels, s->sample_fmt)) < 0)
1708 av_frame_free(&frame);
1712 int attribute_align_arg avcodec_encode_audio2(AVCodecContext *avctx,
1714 const AVFrame *frame,
1715 int *got_packet_ptr)
1717 AVFrame *extended_frame = NULL;
1718 AVFrame *padded_frame = NULL;
1720 AVPacket user_pkt = *avpkt;
1721 int needs_realloc = !user_pkt.data;
1723 *got_packet_ptr = 0;
1725 if (!(avctx->codec->capabilities & CODEC_CAP_DELAY) && !frame) {
1726 av_free_packet(avpkt);
1727 av_init_packet(avpkt);
1731 /* ensure that extended_data is properly set */
1732 if (frame && !frame->extended_data) {
1733 if (av_sample_fmt_is_planar(avctx->sample_fmt) &&
1734 avctx->channels > AV_NUM_DATA_POINTERS) {
1735 av_log(avctx, AV_LOG_ERROR, "Encoding to a planar sample format, "
1736 "with more than %d channels, but extended_data is not set.\n",
1737 AV_NUM_DATA_POINTERS);
1738 return AVERROR(EINVAL);
1740 av_log(avctx, AV_LOG_WARNING, "extended_data is not set.\n");
1742 extended_frame = av_frame_alloc();
1743 if (!extended_frame)
1744 return AVERROR(ENOMEM);
1746 memcpy(extended_frame, frame, sizeof(AVFrame));
1747 extended_frame->extended_data = extended_frame->data;
1748 frame = extended_frame;
1751 /* check for valid frame size */
1753 if (avctx->codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME) {
1754 if (frame->nb_samples > avctx->frame_size) {
1755 av_log(avctx, AV_LOG_ERROR, "more samples than frame size (avcodec_encode_audio2)\n");
1756 ret = AVERROR(EINVAL);
1759 } else if (!(avctx->codec->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE)) {
1760 if (frame->nb_samples < avctx->frame_size &&
1761 !avctx->internal->last_audio_frame) {
1762 ret = pad_last_frame(avctx, &padded_frame, frame);
1766 frame = padded_frame;
1767 avctx->internal->last_audio_frame = 1;
1770 if (frame->nb_samples != avctx->frame_size) {
1771 av_log(avctx, AV_LOG_ERROR, "nb_samples (%d) != frame_size (%d) (avcodec_encode_audio2)\n", frame->nb_samples, avctx->frame_size);
1772 ret = AVERROR(EINVAL);
1778 ret = avctx->codec->encode2(avctx, avpkt, frame, got_packet_ptr);
1780 if (*got_packet_ptr) {
1781 if (!(avctx->codec->capabilities & CODEC_CAP_DELAY)) {
1782 if (avpkt->pts == AV_NOPTS_VALUE)
1783 avpkt->pts = frame->pts;
1784 if (!avpkt->duration)
1785 avpkt->duration = ff_samples_to_time_base(avctx,
1788 avpkt->dts = avpkt->pts;
1793 if (avpkt->data && avpkt->data == avctx->internal->byte_buffer) {
1795 if (user_pkt.data) {
1796 if (user_pkt.size >= avpkt->size) {
1797 memcpy(user_pkt.data, avpkt->data, avpkt->size);
1799 av_log(avctx, AV_LOG_ERROR, "Provided packet is too small, needs to be %d\n", avpkt->size);
1800 avpkt->size = user_pkt.size;
1803 avpkt->buf = user_pkt.buf;
1804 avpkt->data = user_pkt.data;
1805 avpkt->destruct = user_pkt.destruct;
1807 if (av_dup_packet(avpkt) < 0) {
1808 ret = AVERROR(ENOMEM);
1814 if (needs_realloc && avpkt->data) {
1815 ret = av_buffer_realloc(&avpkt->buf, avpkt->size + FF_INPUT_BUFFER_PADDING_SIZE);
1817 avpkt->data = avpkt->buf->data;
1820 avctx->frame_number++;
1823 if (ret < 0 || !*got_packet_ptr) {
1824 av_free_packet(avpkt);
1825 av_init_packet(avpkt);
1829 /* NOTE: if we add any audio encoders which output non-keyframe packets,
1830 * this needs to be moved to the encoders, but for now we can do it
1831 * here to simplify things */
1832 avpkt->flags |= AV_PKT_FLAG_KEY;
1835 av_frame_free(&padded_frame);
1836 av_free(extended_frame);
1841 #if FF_API_OLD_ENCODE_AUDIO
1842 int attribute_align_arg avcodec_encode_audio(AVCodecContext *avctx,
1843 uint8_t *buf, int buf_size,
1844 const short *samples)
1848 int ret, samples_size, got_packet;
1850 av_init_packet(&pkt);
1852 pkt.size = buf_size;
1855 frame = av_frame_alloc();
1857 return AVERROR(ENOMEM);
1859 if (avctx->frame_size) {
1860 frame->nb_samples = avctx->frame_size;
1862 /* if frame_size is not set, the number of samples must be
1863 * calculated from the buffer size */
1865 if (!av_get_bits_per_sample(avctx->codec_id)) {
1866 av_log(avctx, AV_LOG_ERROR, "avcodec_encode_audio() does not "
1867 "support this codec\n");
1868 av_frame_free(&frame);
1869 return AVERROR(EINVAL);
1871 nb_samples = (int64_t)buf_size * 8 /
1872 (av_get_bits_per_sample(avctx->codec_id) *
1874 if (nb_samples >= INT_MAX) {
1875 av_frame_free(&frame);
1876 return AVERROR(EINVAL);
1878 frame->nb_samples = nb_samples;
1881 /* it is assumed that the samples buffer is large enough based on the
1882 * relevant parameters */
1883 samples_size = av_samples_get_buffer_size(NULL, avctx->channels,
1885 avctx->sample_fmt, 1);
1886 if ((ret = avcodec_fill_audio_frame(frame, avctx->channels,
1888 (const uint8_t *)samples,
1889 samples_size, 1)) < 0) {
1890 av_frame_free(&frame);
1894 /* fabricate frame pts from sample count.
1895 * this is needed because the avcodec_encode_audio() API does not have
1896 * a way for the user to provide pts */
1897 if (avctx->sample_rate && avctx->time_base.num)
1898 frame->pts = ff_samples_to_time_base(avctx,
1899 avctx->internal->sample_count);
1901 frame->pts = AV_NOPTS_VALUE;
1902 avctx->internal->sample_count += frame->nb_samples;
1908 ret = avcodec_encode_audio2(avctx, &pkt, frame, &got_packet);
1909 if (!ret && got_packet && avctx->coded_frame) {
1910 avctx->coded_frame->pts = pkt.pts;
1911 avctx->coded_frame->key_frame = !!(pkt.flags & AV_PKT_FLAG_KEY);
1913 /* free any side data since we cannot return it */
1914 av_packet_free_side_data(&pkt);
1916 if (frame && frame->extended_data != frame->data)
1917 av_freep(&frame->extended_data);
1919 av_frame_free(&frame);
1920 return ret ? ret : pkt.size;
1925 #if FF_API_OLD_ENCODE_VIDEO
1926 int attribute_align_arg avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
1927 const AVFrame *pict)
1930 int ret, got_packet = 0;
1932 if (buf_size < FF_MIN_BUFFER_SIZE) {
1933 av_log(avctx, AV_LOG_ERROR, "buffer smaller than minimum size\n");
1937 av_init_packet(&pkt);
1939 pkt.size = buf_size;
1941 ret = avcodec_encode_video2(avctx, &pkt, pict, &got_packet);
1942 if (!ret && got_packet && avctx->coded_frame) {
1943 avctx->coded_frame->pts = pkt.pts;
1944 avctx->coded_frame->key_frame = !!(pkt.flags & AV_PKT_FLAG_KEY);
1947 /* free any side data since we cannot return it */
1948 if (pkt.side_data_elems > 0) {
1950 for (i = 0; i < pkt.side_data_elems; i++)
1951 av_free(pkt.side_data[i].data);
1952 av_freep(&pkt.side_data);
1953 pkt.side_data_elems = 0;
1956 return ret ? ret : pkt.size;
1961 int attribute_align_arg avcodec_encode_video2(AVCodecContext *avctx,
1963 const AVFrame *frame,
1964 int *got_packet_ptr)
1967 AVPacket user_pkt = *avpkt;
1968 int needs_realloc = !user_pkt.data;
1970 *got_packet_ptr = 0;
1972 if(CONFIG_FRAME_THREAD_ENCODER &&
1973 avctx->internal->frame_thread_encoder && (avctx->active_thread_type&FF_THREAD_FRAME))
1974 return ff_thread_video_encode_frame(avctx, avpkt, frame, got_packet_ptr);
1976 if ((avctx->flags&CODEC_FLAG_PASS1) && avctx->stats_out)
1977 avctx->stats_out[0] = '\0';
1979 if (!(avctx->codec->capabilities & CODEC_CAP_DELAY) && !frame) {
1980 av_free_packet(avpkt);
1981 av_init_packet(avpkt);
1986 if (av_image_check_size(avctx->width, avctx->height, 0, avctx))
1987 return AVERROR(EINVAL);
1989 av_assert0(avctx->codec->encode2);
1991 ret = avctx->codec->encode2(avctx, avpkt, frame, got_packet_ptr);
1992 av_assert0(ret <= 0);
1994 if (avpkt->data && avpkt->data == avctx->internal->byte_buffer) {
1996 if (user_pkt.data) {
1997 if (user_pkt.size >= avpkt->size) {
1998 memcpy(user_pkt.data, avpkt->data, avpkt->size);
2000 av_log(avctx, AV_LOG_ERROR, "Provided packet is too small, needs to be %d\n", avpkt->size);
2001 avpkt->size = user_pkt.size;
2004 avpkt->buf = user_pkt.buf;
2005 avpkt->data = user_pkt.data;
2006 avpkt->destruct = user_pkt.destruct;
2008 if (av_dup_packet(avpkt) < 0) {
2009 ret = AVERROR(ENOMEM);
2015 if (!*got_packet_ptr)
2017 else if (!(avctx->codec->capabilities & CODEC_CAP_DELAY))
2018 avpkt->pts = avpkt->dts = frame->pts;
2020 if (needs_realloc && avpkt->data) {
2021 ret = av_buffer_realloc(&avpkt->buf, avpkt->size + FF_INPUT_BUFFER_PADDING_SIZE);
2023 avpkt->data = avpkt->buf->data;
2026 avctx->frame_number++;
2029 if (ret < 0 || !*got_packet_ptr)
2030 av_free_packet(avpkt);
2032 av_packet_merge_side_data(avpkt);
2038 int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size,
2039 const AVSubtitle *sub)
2042 if (sub->start_display_time) {
2043 av_log(avctx, AV_LOG_ERROR, "start_display_time must be 0.\n");
2047 ret = avctx->codec->encode_sub(avctx, buf, buf_size, sub);
2048 avctx->frame_number++;
2053 * Attempt to guess proper monotonic timestamps for decoded video frames
2054 * which might have incorrect times. Input timestamps may wrap around, in
2055 * which case the output will as well.
2057 * @param pts the pts field of the decoded AVPacket, as passed through
2059 * @param dts the dts field of the decoded AVPacket
2060 * @return one of the input values, may be AV_NOPTS_VALUE
2062 static int64_t guess_correct_pts(AVCodecContext *ctx,
2063 int64_t reordered_pts, int64_t dts)
2065 int64_t pts = AV_NOPTS_VALUE;
2067 if (dts != AV_NOPTS_VALUE) {
2068 ctx->pts_correction_num_faulty_dts += dts <= ctx->pts_correction_last_dts;
2069 ctx->pts_correction_last_dts = dts;
2070 } else if (reordered_pts != AV_NOPTS_VALUE)
2071 ctx->pts_correction_last_dts = reordered_pts;
2073 if (reordered_pts != AV_NOPTS_VALUE) {
2074 ctx->pts_correction_num_faulty_pts += reordered_pts <= ctx->pts_correction_last_pts;
2075 ctx->pts_correction_last_pts = reordered_pts;
2076 } else if(dts != AV_NOPTS_VALUE)
2077 ctx->pts_correction_last_pts = dts;
2079 if ((ctx->pts_correction_num_faulty_pts<=ctx->pts_correction_num_faulty_dts || dts == AV_NOPTS_VALUE)
2080 && reordered_pts != AV_NOPTS_VALUE)
2081 pts = reordered_pts;
2088 static int apply_param_change(AVCodecContext *avctx, AVPacket *avpkt)
2091 const uint8_t *data;
2094 data = av_packet_get_side_data(avpkt, AV_PKT_DATA_PARAM_CHANGE, &size);
2098 if (!(avctx->codec->capabilities & CODEC_CAP_PARAM_CHANGE)) {
2099 av_log(avctx, AV_LOG_ERROR, "This decoder does not support parameter "
2100 "changes, but PARAM_CHANGE side data was sent to it.\n");
2101 return AVERROR(EINVAL);
2107 flags = bytestream_get_le32(&data);
2110 if (flags & AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_COUNT) {
2113 avctx->channels = bytestream_get_le32(&data);
2116 if (flags & AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_LAYOUT) {
2119 avctx->channel_layout = bytestream_get_le64(&data);
2122 if (flags & AV_SIDE_DATA_PARAM_CHANGE_SAMPLE_RATE) {
2125 avctx->sample_rate = bytestream_get_le32(&data);
2128 if (flags & AV_SIDE_DATA_PARAM_CHANGE_DIMENSIONS) {
2131 avctx->width = bytestream_get_le32(&data);
2132 avctx->height = bytestream_get_le32(&data);
2134 ret = ff_set_dimensions(avctx, avctx->width, avctx->height);
2141 av_log(avctx, AV_LOG_ERROR, "PARAM_CHANGE side data too small.\n");
2142 return AVERROR_INVALIDDATA;
2145 static int add_metadata_from_side_data(AVCodecContext *avctx, AVFrame *frame)
2148 const uint8_t *side_metadata;
2150 AVDictionary **frame_md = avpriv_frame_get_metadatap(frame);
2152 side_metadata = av_packet_get_side_data(avctx->internal->pkt,
2153 AV_PKT_DATA_STRINGS_METADATA, &size);
2154 return av_packet_unpack_dictionary(side_metadata, size, frame_md);
2157 static int unrefcount_frame(AVCodecInternal *avci, AVFrame *frame)
2161 /* move the original frame to our backup */
2162 av_frame_unref(avci->to_free);
2163 av_frame_move_ref(avci->to_free, frame);
2165 /* now copy everything except the AVBufferRefs back
2166 * note that we make a COPY of the side data, so calling av_frame_free() on
2167 * the caller's frame will work properly */
2168 ret = av_frame_copy_props(frame, avci->to_free);
2172 memcpy(frame->data, avci->to_free->data, sizeof(frame->data));
2173 memcpy(frame->linesize, avci->to_free->linesize, sizeof(frame->linesize));
2174 if (avci->to_free->extended_data != avci->to_free->data) {
2175 int planes = av_frame_get_channels(avci->to_free);
2176 int size = planes * sizeof(*frame->extended_data);
2179 av_frame_unref(frame);
2183 frame->extended_data = av_malloc(size);
2184 if (!frame->extended_data) {
2185 av_frame_unref(frame);
2186 return AVERROR(ENOMEM);
2188 memcpy(frame->extended_data, avci->to_free->extended_data,
2191 frame->extended_data = frame->data;
2193 frame->format = avci->to_free->format;
2194 frame->width = avci->to_free->width;
2195 frame->height = avci->to_free->height;
2196 frame->channel_layout = avci->to_free->channel_layout;
2197 frame->nb_samples = avci->to_free->nb_samples;
2198 av_frame_set_channels(frame, av_frame_get_channels(avci->to_free));
2203 int attribute_align_arg avcodec_decode_video2(AVCodecContext *avctx, AVFrame *picture,
2204 int *got_picture_ptr,
2205 const AVPacket *avpkt)
2207 AVCodecInternal *avci = avctx->internal;
2209 // copy to ensure we do not change avpkt
2210 AVPacket tmp = *avpkt;
2213 return AVERROR(EINVAL);
2214 if (avctx->codec->type != AVMEDIA_TYPE_VIDEO) {
2215 av_log(avctx, AV_LOG_ERROR, "Invalid media type for video\n");
2216 return AVERROR(EINVAL);
2219 *got_picture_ptr = 0;
2220 if ((avctx->coded_width || avctx->coded_height) && av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx))
2221 return AVERROR(EINVAL);
2223 av_frame_unref(picture);
2225 if ((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size || (avctx->active_thread_type & FF_THREAD_FRAME)) {
2226 int did_split = av_packet_split_side_data(&tmp);
2227 ret = apply_param_change(avctx, &tmp);
2229 av_log(avctx, AV_LOG_ERROR, "Error applying parameter changes.\n");
2230 if (avctx->err_recognition & AV_EF_EXPLODE)
2234 avctx->internal->pkt = &tmp;
2235 if (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME)
2236 ret = ff_thread_decode_frame(avctx, picture, got_picture_ptr,
2239 ret = avctx->codec->decode(avctx, picture, got_picture_ptr,
2241 picture->pkt_dts = avpkt->dts;
2243 if(!avctx->has_b_frames){
2244 av_frame_set_pkt_pos(picture, avpkt->pos);
2246 //FIXME these should be under if(!avctx->has_b_frames)
2247 /* get_buffer is supposed to set frame parameters */
2248 if (!(avctx->codec->capabilities & CODEC_CAP_DR1)) {
2249 if (!picture->sample_aspect_ratio.num) picture->sample_aspect_ratio = avctx->sample_aspect_ratio;
2250 if (!picture->width) picture->width = avctx->width;
2251 if (!picture->height) picture->height = avctx->height;
2252 if (picture->format == AV_PIX_FMT_NONE) picture->format = avctx->pix_fmt;
2255 add_metadata_from_side_data(avctx, picture);
2258 emms_c(); //needed to avoid an emms_c() call before every return;
2260 avctx->internal->pkt = NULL;
2262 av_packet_free_side_data(&tmp);
2267 if (*got_picture_ptr) {
2268 if (!avctx->refcounted_frames) {
2269 int err = unrefcount_frame(avci, picture);
2274 avctx->frame_number++;
2275 av_frame_set_best_effort_timestamp(picture,
2276 guess_correct_pts(avctx,
2280 av_frame_unref(picture);
2284 /* many decoders assign whole AVFrames, thus overwriting extended_data;
2285 * make sure it's set correctly */
2286 av_assert0(!picture->extended_data || picture->extended_data == picture->data);
2291 #if FF_API_OLD_DECODE_AUDIO
2292 int attribute_align_arg avcodec_decode_audio3(AVCodecContext *avctx, int16_t *samples,
2293 int *frame_size_ptr,
2296 AVFrame *frame = av_frame_alloc();
2297 int ret, got_frame = 0;
2300 return AVERROR(ENOMEM);
2301 if (avctx->get_buffer != avcodec_default_get_buffer) {
2302 av_log(avctx, AV_LOG_ERROR, "Custom get_buffer() for use with"
2303 "avcodec_decode_audio3() detected. Overriding with avcodec_default_get_buffer\n");
2304 av_log(avctx, AV_LOG_ERROR, "Please port your application to "
2305 "avcodec_decode_audio4()\n");
2306 avctx->get_buffer = avcodec_default_get_buffer;
2307 avctx->release_buffer = avcodec_default_release_buffer;
2310 ret = avcodec_decode_audio4(avctx, frame, &got_frame, avpkt);
2312 if (ret >= 0 && got_frame) {
2314 int planar = av_sample_fmt_is_planar(avctx->sample_fmt);
2315 int data_size = av_samples_get_buffer_size(&plane_size, avctx->channels,
2317 avctx->sample_fmt, 1);
2318 if (*frame_size_ptr < data_size) {
2319 av_log(avctx, AV_LOG_ERROR, "output buffer size is too small for "
2320 "the current frame (%d < %d)\n", *frame_size_ptr, data_size);
2321 av_frame_free(&frame);
2322 return AVERROR(EINVAL);
2325 memcpy(samples, frame->extended_data[0], plane_size);
2327 if (planar && avctx->channels > 1) {
2328 uint8_t *out = ((uint8_t *)samples) + plane_size;
2329 for (ch = 1; ch < avctx->channels; ch++) {
2330 memcpy(out, frame->extended_data[ch], plane_size);
2334 *frame_size_ptr = data_size;
2336 *frame_size_ptr = 0;
2338 av_frame_free(&frame);
2344 int attribute_align_arg avcodec_decode_audio4(AVCodecContext *avctx,
2347 const AVPacket *avpkt)
2349 AVCodecInternal *avci = avctx->internal;
2354 if (!avpkt->data && avpkt->size) {
2355 av_log(avctx, AV_LOG_ERROR, "invalid packet: NULL data, size != 0\n");
2356 return AVERROR(EINVAL);
2359 return AVERROR(EINVAL);
2360 if (avctx->codec->type != AVMEDIA_TYPE_AUDIO) {
2361 av_log(avctx, AV_LOG_ERROR, "Invalid media type for audio\n");
2362 return AVERROR(EINVAL);
2365 av_frame_unref(frame);
2367 if ((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size || (avctx->active_thread_type & FF_THREAD_FRAME)) {
2370 uint32_t discard_padding = 0;
2371 // copy to ensure we do not change avpkt
2372 AVPacket tmp = *avpkt;
2373 int did_split = av_packet_split_side_data(&tmp);
2374 ret = apply_param_change(avctx, &tmp);
2376 av_log(avctx, AV_LOG_ERROR, "Error applying parameter changes.\n");
2377 if (avctx->err_recognition & AV_EF_EXPLODE)
2381 avctx->internal->pkt = &tmp;
2382 if (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME)
2383 ret = ff_thread_decode_frame(avctx, frame, got_frame_ptr, &tmp);
2385 ret = avctx->codec->decode(avctx, frame, got_frame_ptr, &tmp);
2386 frame->pkt_dts = avpkt->dts;
2388 if (ret >= 0 && *got_frame_ptr) {
2389 add_metadata_from_side_data(avctx, frame);
2390 avctx->frame_number++;
2391 av_frame_set_best_effort_timestamp(frame,
2392 guess_correct_pts(avctx,
2395 if (frame->format == AV_SAMPLE_FMT_NONE)
2396 frame->format = avctx->sample_fmt;
2397 if (!frame->channel_layout)
2398 frame->channel_layout = avctx->channel_layout;
2399 if (!av_frame_get_channels(frame))
2400 av_frame_set_channels(frame, avctx->channels);
2401 if (!frame->sample_rate)
2402 frame->sample_rate = avctx->sample_rate;
2405 side= av_packet_get_side_data(avctx->internal->pkt, AV_PKT_DATA_SKIP_SAMPLES, &side_size);
2406 if(side && side_size>=10) {
2407 avctx->internal->skip_samples = AV_RL32(side);
2408 av_log(avctx, AV_LOG_DEBUG, "skip %d samples due to side data\n",
2409 avctx->internal->skip_samples);
2410 discard_padding = AV_RL32(side + 4);
2412 if (avctx->internal->skip_samples && *got_frame_ptr) {
2413 if(frame->nb_samples <= avctx->internal->skip_samples){
2415 avctx->internal->skip_samples -= frame->nb_samples;
2416 av_log(avctx, AV_LOG_DEBUG, "skip whole frame, skip left: %d\n",
2417 avctx->internal->skip_samples);
2419 av_samples_copy(frame->extended_data, frame->extended_data, 0, avctx->internal->skip_samples,
2420 frame->nb_samples - avctx->internal->skip_samples, avctx->channels, frame->format);
2421 if(avctx->pkt_timebase.num && avctx->sample_rate) {
2422 int64_t diff_ts = av_rescale_q(avctx->internal->skip_samples,
2423 (AVRational){1, avctx->sample_rate},
2424 avctx->pkt_timebase);
2425 if(frame->pkt_pts!=AV_NOPTS_VALUE)
2426 frame->pkt_pts += diff_ts;
2427 if(frame->pkt_dts!=AV_NOPTS_VALUE)
2428 frame->pkt_dts += diff_ts;
2429 if (av_frame_get_pkt_duration(frame) >= diff_ts)
2430 av_frame_set_pkt_duration(frame, av_frame_get_pkt_duration(frame) - diff_ts);
2432 av_log(avctx, AV_LOG_WARNING, "Could not update timestamps for skipped samples.\n");
2434 av_log(avctx, AV_LOG_DEBUG, "skip %d/%d samples\n",
2435 avctx->internal->skip_samples, frame->nb_samples);
2436 frame->nb_samples -= avctx->internal->skip_samples;
2437 avctx->internal->skip_samples = 0;
2441 if (discard_padding > 0 && discard_padding <= frame->nb_samples && *got_frame_ptr) {
2442 if (discard_padding == frame->nb_samples) {
2445 if(avctx->pkt_timebase.num && avctx->sample_rate) {
2446 int64_t diff_ts = av_rescale_q(frame->nb_samples - discard_padding,
2447 (AVRational){1, avctx->sample_rate},
2448 avctx->pkt_timebase);
2449 if (av_frame_get_pkt_duration(frame) >= diff_ts)
2450 av_frame_set_pkt_duration(frame, av_frame_get_pkt_duration(frame) - diff_ts);
2452 av_log(avctx, AV_LOG_WARNING, "Could not update timestamps for discarded samples.\n");
2454 av_log(avctx, AV_LOG_DEBUG, "discard %d/%d samples\n",
2455 discard_padding, frame->nb_samples);
2456 frame->nb_samples -= discard_padding;
2460 avctx->internal->pkt = NULL;
2462 av_packet_free_side_data(&tmp);
2467 if (ret >= 0 && *got_frame_ptr) {
2468 if (!avctx->refcounted_frames) {
2469 int err = unrefcount_frame(avci, frame);
2474 av_frame_unref(frame);
2480 #define UTF8_MAX_BYTES 4 /* 5 and 6 bytes sequences should not be used */
2481 static int recode_subtitle(AVCodecContext *avctx,
2482 AVPacket *outpkt, const AVPacket *inpkt)
2485 iconv_t cd = (iconv_t)-1;
2492 if (avctx->sub_charenc_mode != FF_SUB_CHARENC_MODE_PRE_DECODER || inpkt->size == 0)
2496 cd = iconv_open("UTF-8", avctx->sub_charenc);
2497 av_assert0(cd != (iconv_t)-1);
2502 if (inl >= INT_MAX / UTF8_MAX_BYTES - FF_INPUT_BUFFER_PADDING_SIZE) {
2503 av_log(avctx, AV_LOG_ERROR, "Subtitles packet is too big for recoding\n");
2504 ret = AVERROR(ENOMEM);
2508 ret = av_new_packet(&tmp, inl * UTF8_MAX_BYTES);
2511 outpkt->buf = tmp.buf;
2512 outpkt->data = tmp.data;
2513 outpkt->size = tmp.size;
2514 outb = outpkt->data;
2515 outl = outpkt->size;
2517 if (iconv(cd, &inb, &inl, &outb, &outl) == (size_t)-1 ||
2518 iconv(cd, NULL, NULL, &outb, &outl) == (size_t)-1 ||
2519 outl >= outpkt->size || inl != 0) {
2520 av_log(avctx, AV_LOG_ERROR, "Unable to recode subtitle event \"%s\" "
2521 "from %s to UTF-8\n", inpkt->data, avctx->sub_charenc);
2522 av_free_packet(&tmp);
2523 ret = AVERROR(errno);
2526 outpkt->size -= outl;
2527 memset(outpkt->data + outpkt->size, 0, outl);
2530 if (cd != (iconv_t)-1)
2534 av_assert0(!"requesting subtitles recoding without iconv");
2538 static int utf8_check(const uint8_t *str)
2540 const uint8_t *byte;
2541 uint32_t codepoint, min;
2545 GET_UTF8(codepoint, *(byte++), return 0;);
2546 min = byte - str == 1 ? 0 : byte - str == 2 ? 0x80 :
2547 1 << (5 * (byte - str) - 4);
2548 if (codepoint < min || codepoint >= 0x110000 ||
2549 codepoint == 0xFFFE /* BOM */ ||
2550 codepoint >= 0xD800 && codepoint <= 0xDFFF /* surrogates */)
2557 int avcodec_decode_subtitle2(AVCodecContext *avctx, AVSubtitle *sub,
2563 if (!avpkt->data && avpkt->size) {
2564 av_log(avctx, AV_LOG_ERROR, "invalid packet: NULL data, size != 0\n");
2565 return AVERROR(EINVAL);
2568 return AVERROR(EINVAL);
2569 if (avctx->codec->type != AVMEDIA_TYPE_SUBTITLE) {
2570 av_log(avctx, AV_LOG_ERROR, "Invalid media type for subtitles\n");
2571 return AVERROR(EINVAL);
2575 avcodec_get_subtitle_defaults(sub);
2577 if ((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size) {
2578 AVPacket pkt_recoded;
2579 AVPacket tmp = *avpkt;
2580 int did_split = av_packet_split_side_data(&tmp);
2581 //apply_param_change(avctx, &tmp);
2584 /* FFMIN() prevents overflow in case the packet wasn't allocated with
2586 * If the side data is smaller than the buffer padding size, the
2587 * remaining bytes should have already been filled with zeros by the
2588 * original packet allocation anyway. */
2589 memset(tmp.data + tmp.size, 0,
2590 FFMIN(avpkt->size - tmp.size, FF_INPUT_BUFFER_PADDING_SIZE));
2594 ret = recode_subtitle(avctx, &pkt_recoded, &tmp);
2598 avctx->internal->pkt = &pkt_recoded;
2600 if (avctx->pkt_timebase.den && avpkt->pts != AV_NOPTS_VALUE)
2601 sub->pts = av_rescale_q(avpkt->pts,
2602 avctx->pkt_timebase, AV_TIME_BASE_Q);
2603 ret = avctx->codec->decode(avctx, sub, got_sub_ptr, &pkt_recoded);
2604 av_assert1((ret >= 0) >= !!*got_sub_ptr &&
2605 !!*got_sub_ptr >= !!sub->num_rects);
2607 if (sub->num_rects && !sub->end_display_time && avpkt->duration &&
2608 avctx->pkt_timebase.num) {
2609 AVRational ms = { 1, 1000 };
2610 sub->end_display_time = av_rescale_q(avpkt->duration,
2611 avctx->pkt_timebase, ms);
2614 for (i = 0; i < sub->num_rects; i++) {
2615 if (sub->rects[i]->ass && !utf8_check(sub->rects[i]->ass)) {
2616 av_log(avctx, AV_LOG_ERROR,
2617 "Invalid UTF-8 in decoded subtitles text; "
2618 "maybe missing -sub_charenc option\n");
2619 avsubtitle_free(sub);
2620 return AVERROR_INVALIDDATA;
2624 if (tmp.data != pkt_recoded.data) { // did we recode?
2625 /* prevent from destroying side data from original packet */
2626 pkt_recoded.side_data = NULL;
2627 pkt_recoded.side_data_elems = 0;
2629 av_free_packet(&pkt_recoded);
2631 if (avctx->codec_descriptor->props & AV_CODEC_PROP_BITMAP_SUB)
2633 else if (avctx->codec_descriptor->props & AV_CODEC_PROP_TEXT_SUB)
2635 avctx->internal->pkt = NULL;
2639 av_packet_free_side_data(&tmp);
2645 avctx->frame_number++;
2651 void avsubtitle_free(AVSubtitle *sub)
2655 for (i = 0; i < sub->num_rects; i++) {
2656 av_freep(&sub->rects[i]->pict.data[0]);
2657 av_freep(&sub->rects[i]->pict.data[1]);
2658 av_freep(&sub->rects[i]->pict.data[2]);
2659 av_freep(&sub->rects[i]->pict.data[3]);
2660 av_freep(&sub->rects[i]->text);
2661 av_freep(&sub->rects[i]->ass);
2662 av_freep(&sub->rects[i]);
2665 av_freep(&sub->rects);
2667 memset(sub, 0, sizeof(AVSubtitle));
2670 av_cold int ff_codec_close_recursive(AVCodecContext *avctx)
2674 ff_unlock_avcodec();
2676 ret = avcodec_close(avctx);
2678 ff_lock_avcodec(NULL);
2682 av_cold int avcodec_close(AVCodecContext *avctx)
2689 ret = ff_lock_avcodec(avctx);
2693 if (avcodec_is_open(avctx)) {
2694 FramePool *pool = avctx->internal->pool;
2696 if (CONFIG_FRAME_THREAD_ENCODER &&
2697 avctx->internal->frame_thread_encoder && avctx->thread_count > 1) {
2698 ff_unlock_avcodec();
2699 ff_frame_thread_encoder_free(avctx);
2700 ff_lock_avcodec(avctx);
2702 if (HAVE_THREADS && avctx->internal->thread_ctx)
2703 ff_thread_free(avctx);
2704 if (avctx->codec && avctx->codec->close)
2705 avctx->codec->close(avctx);
2706 avctx->coded_frame = NULL;
2707 avctx->internal->byte_buffer_size = 0;
2708 av_freep(&avctx->internal->byte_buffer);
2709 av_frame_free(&avctx->internal->to_free);
2710 for (i = 0; i < FF_ARRAY_ELEMS(pool->pools); i++)
2711 av_buffer_pool_uninit(&pool->pools[i]);
2712 av_freep(&avctx->internal->pool);
2714 if (avctx->hwaccel && avctx->hwaccel->uninit)
2715 avctx->hwaccel->uninit(avctx);
2716 av_freep(&avctx->internal->hwaccel_priv_data);
2718 av_freep(&avctx->internal);
2721 if (avctx->priv_data && avctx->codec && avctx->codec->priv_class)
2722 av_opt_free(avctx->priv_data);
2724 av_freep(&avctx->priv_data);
2725 if (av_codec_is_encoder(avctx->codec))
2726 av_freep(&avctx->extradata);
2727 avctx->codec = NULL;
2728 avctx->active_thread_type = 0;
2730 ff_unlock_avcodec();
2734 static enum AVCodecID remap_deprecated_codec_id(enum AVCodecID id)
2737 //This is for future deprecatec codec ids, its empty since
2738 //last major bump but will fill up again over time, please don't remove it
2739 // case AV_CODEC_ID_UTVIDEO_DEPRECATED: return AV_CODEC_ID_UTVIDEO;
2740 case AV_CODEC_ID_BRENDER_PIX_DEPRECATED : return AV_CODEC_ID_BRENDER_PIX;
2741 case AV_CODEC_ID_OPUS_DEPRECATED : return AV_CODEC_ID_OPUS;
2742 case AV_CODEC_ID_TAK_DEPRECATED : return AV_CODEC_ID_TAK;
2743 case AV_CODEC_ID_PAF_AUDIO_DEPRECATED : return AV_CODEC_ID_PAF_AUDIO;
2744 case AV_CODEC_ID_PCM_S24LE_PLANAR_DEPRECATED : return AV_CODEC_ID_PCM_S24LE_PLANAR;
2745 case AV_CODEC_ID_PCM_S32LE_PLANAR_DEPRECATED : return AV_CODEC_ID_PCM_S32LE_PLANAR;
2746 case AV_CODEC_ID_ADPCM_VIMA_DEPRECATED : return AV_CODEC_ID_ADPCM_VIMA;
2747 case AV_CODEC_ID_ESCAPE130_DEPRECATED : return AV_CODEC_ID_ESCAPE130;
2748 case AV_CODEC_ID_EXR_DEPRECATED : return AV_CODEC_ID_EXR;
2749 case AV_CODEC_ID_G2M_DEPRECATED : return AV_CODEC_ID_G2M;
2750 case AV_CODEC_ID_PAF_VIDEO_DEPRECATED : return AV_CODEC_ID_PAF_VIDEO;
2751 case AV_CODEC_ID_WEBP_DEPRECATED : return AV_CODEC_ID_WEBP;
2752 case AV_CODEC_ID_HEVC_DEPRECATED : return AV_CODEC_ID_HEVC;
2753 case AV_CODEC_ID_MVC1_DEPRECATED : return AV_CODEC_ID_MVC1;
2754 case AV_CODEC_ID_MVC2_DEPRECATED : return AV_CODEC_ID_MVC2;
2755 case AV_CODEC_ID_SANM_DEPRECATED : return AV_CODEC_ID_SANM;
2756 case AV_CODEC_ID_SGIRLE_DEPRECATED : return AV_CODEC_ID_SGIRLE;
2757 case AV_CODEC_ID_VP7_DEPRECATED : return AV_CODEC_ID_VP7;
2758 default : return id;
2762 static AVCodec *find_encdec(enum AVCodecID id, int encoder)
2764 AVCodec *p, *experimental = NULL;
2766 id= remap_deprecated_codec_id(id);
2768 if ((encoder ? av_codec_is_encoder(p) : av_codec_is_decoder(p)) &&
2770 if (p->capabilities & CODEC_CAP_EXPERIMENTAL && !experimental) {
2777 return experimental;
2780 AVCodec *avcodec_find_encoder(enum AVCodecID id)
2782 return find_encdec(id, 1);
2785 AVCodec *avcodec_find_encoder_by_name(const char *name)
2792 if (av_codec_is_encoder(p) && strcmp(name, p->name) == 0)
2799 AVCodec *avcodec_find_decoder(enum AVCodecID id)
2801 return find_encdec(id, 0);
2804 AVCodec *avcodec_find_decoder_by_name(const char *name)
2811 if (av_codec_is_decoder(p) && strcmp(name, p->name) == 0)
2818 const char *avcodec_get_name(enum AVCodecID id)
2820 const AVCodecDescriptor *cd;
2823 if (id == AV_CODEC_ID_NONE)
2825 cd = avcodec_descriptor_get(id);
2828 av_log(NULL, AV_LOG_WARNING, "Codec 0x%x is not in the full list.\n", id);
2829 codec = avcodec_find_decoder(id);
2832 codec = avcodec_find_encoder(id);
2835 return "unknown_codec";
2838 size_t av_get_codec_tag_string(char *buf, size_t buf_size, unsigned int codec_tag)
2840 int i, len, ret = 0;
2842 #define TAG_PRINT(x) \
2843 (((x) >= '0' && (x) <= '9') || \
2844 ((x) >= 'a' && (x) <= 'z') || ((x) >= 'A' && (x) <= 'Z') || \
2845 ((x) == '.' || (x) == ' ' || (x) == '-' || (x) == '_'))
2847 for (i = 0; i < 4; i++) {
2848 len = snprintf(buf, buf_size,
2849 TAG_PRINT(codec_tag & 0xFF) ? "%c" : "[%d]", codec_tag & 0xFF);
2851 buf_size = buf_size > len ? buf_size - len : 0;
2858 void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)
2860 const char *codec_type;
2861 const char *codec_name;
2862 const char *profile = NULL;
2865 AVRational display_aspect_ratio;
2867 if (!buf || buf_size <= 0)
2869 codec_type = av_get_media_type_string(enc->codec_type);
2870 codec_name = avcodec_get_name(enc->codec_id);
2871 if (enc->profile != FF_PROFILE_UNKNOWN) {
2875 p = encode ? avcodec_find_encoder(enc->codec_id) :
2876 avcodec_find_decoder(enc->codec_id);
2878 profile = av_get_profile_name(p, enc->profile);
2881 snprintf(buf, buf_size, "%s: %s", codec_type ? codec_type : "unknown",
2883 buf[0] ^= 'a' ^ 'A'; /* first letter in uppercase */
2885 if (enc->codec && strcmp(enc->codec->name, codec_name))
2886 snprintf(buf + strlen(buf), buf_size - strlen(buf), " (%s)", enc->codec->name);
2889 snprintf(buf + strlen(buf), buf_size - strlen(buf), " (%s)", profile);
2890 if (enc->codec_tag) {
2892 av_get_codec_tag_string(tag_buf, sizeof(tag_buf), enc->codec_tag);
2893 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2894 " (%s / 0x%04X)", tag_buf, enc->codec_tag);
2897 switch (enc->codec_type) {
2898 case AVMEDIA_TYPE_VIDEO:
2899 if (enc->pix_fmt != AV_PIX_FMT_NONE) {
2900 char detail[256] = "(";
2901 const char *colorspace_name;
2902 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2904 av_get_pix_fmt_name(enc->pix_fmt));
2905 if (enc->bits_per_raw_sample &&
2906 enc->bits_per_raw_sample <= av_pix_fmt_desc_get(enc->pix_fmt)->comp[0].depth_minus1)
2907 av_strlcatf(detail, sizeof(detail), "%d bpc, ", enc->bits_per_raw_sample);
2908 if (enc->color_range != AVCOL_RANGE_UNSPECIFIED)
2909 av_strlcatf(detail, sizeof(detail),
2910 enc->color_range == AVCOL_RANGE_MPEG ? "tv, ": "pc, ");
2912 colorspace_name = av_get_colorspace_name(enc->colorspace);
2913 if (colorspace_name)
2914 av_strlcatf(detail, sizeof(detail), "%s, ", colorspace_name);
2916 if (strlen(detail) > 1) {
2917 detail[strlen(detail) - 2] = 0;
2918 av_strlcatf(buf, buf_size, "%s)", detail);
2922 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2924 enc->width, enc->height);
2925 if (enc->sample_aspect_ratio.num) {
2926 av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
2927 enc->width * enc->sample_aspect_ratio.num,
2928 enc->height * enc->sample_aspect_ratio.den,
2930 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2931 " [SAR %d:%d DAR %d:%d]",
2932 enc->sample_aspect_ratio.num, enc->sample_aspect_ratio.den,
2933 display_aspect_ratio.num, display_aspect_ratio.den);
2935 if (av_log_get_level() >= AV_LOG_DEBUG) {
2936 int g = av_gcd(enc->time_base.num, enc->time_base.den);
2937 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2939 enc->time_base.num / g, enc->time_base.den / g);
2943 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2944 ", q=%d-%d", enc->qmin, enc->qmax);
2947 case AVMEDIA_TYPE_AUDIO:
2948 if (enc->sample_rate) {
2949 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2950 ", %d Hz", enc->sample_rate);
2952 av_strlcat(buf, ", ", buf_size);
2953 av_get_channel_layout_string(buf + strlen(buf), buf_size - strlen(buf), enc->channels, enc->channel_layout);
2954 if (enc->sample_fmt != AV_SAMPLE_FMT_NONE) {
2955 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2956 ", %s", av_get_sample_fmt_name(enc->sample_fmt));
2959 case AVMEDIA_TYPE_DATA:
2960 if (av_log_get_level() >= AV_LOG_DEBUG) {
2961 int g = av_gcd(enc->time_base.num, enc->time_base.den);
2963 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2965 enc->time_base.num / g, enc->time_base.den / g);
2968 case AVMEDIA_TYPE_SUBTITLE:
2970 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2971 ", %dx%d", enc->width, enc->height);
2977 if (enc->flags & CODEC_FLAG_PASS1)
2978 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2980 if (enc->flags & CODEC_FLAG_PASS2)
2981 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2984 bitrate = get_bit_rate(enc);
2986 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2987 ", %d kb/s", bitrate / 1000);
2988 } else if (enc->rc_max_rate > 0) {
2989 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2990 ", max. %d kb/s", enc->rc_max_rate / 1000);
2994 const char *av_get_profile_name(const AVCodec *codec, int profile)
2997 if (profile == FF_PROFILE_UNKNOWN || !codec->profiles)
3000 for (p = codec->profiles; p->profile != FF_PROFILE_UNKNOWN; p++)
3001 if (p->profile == profile)
3007 unsigned avcodec_version(void)
3009 // av_assert0(AV_CODEC_ID_V410==164);
3010 av_assert0(AV_CODEC_ID_PCM_S8_PLANAR==65563);
3011 av_assert0(AV_CODEC_ID_ADPCM_G722==69660);
3012 // av_assert0(AV_CODEC_ID_BMV_AUDIO==86071);
3013 av_assert0(AV_CODEC_ID_SRT==94216);
3014 av_assert0(LIBAVCODEC_VERSION_MICRO >= 100);
3016 av_assert0(CODEC_ID_CLLC == AV_CODEC_ID_CLLC);
3017 av_assert0(CODEC_ID_PCM_S8_PLANAR == AV_CODEC_ID_PCM_S8_PLANAR);
3018 av_assert0(CODEC_ID_ADPCM_IMA_APC == AV_CODEC_ID_ADPCM_IMA_APC);
3019 av_assert0(CODEC_ID_ILBC == AV_CODEC_ID_ILBC);
3020 av_assert0(CODEC_ID_SRT == AV_CODEC_ID_SRT);
3021 return LIBAVCODEC_VERSION_INT;
3024 const char *avcodec_configuration(void)
3026 return FFMPEG_CONFIGURATION;
3029 const char *avcodec_license(void)
3031 #define LICENSE_PREFIX "libavcodec license: "
3032 return LICENSE_PREFIX FFMPEG_LICENSE + sizeof(LICENSE_PREFIX) - 1;
3035 void avcodec_flush_buffers(AVCodecContext *avctx)
3037 if (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME)
3038 ff_thread_flush(avctx);
3039 else if (avctx->codec->flush)
3040 avctx->codec->flush(avctx);
3042 avctx->pts_correction_last_pts =
3043 avctx->pts_correction_last_dts = INT64_MIN;
3045 if (!avctx->refcounted_frames)
3046 av_frame_unref(avctx->internal->to_free);
3049 int av_get_exact_bits_per_sample(enum AVCodecID codec_id)
3052 case AV_CODEC_ID_8SVX_EXP:
3053 case AV_CODEC_ID_8SVX_FIB:
3054 case AV_CODEC_ID_ADPCM_CT:
3055 case AV_CODEC_ID_ADPCM_IMA_APC:
3056 case AV_CODEC_ID_ADPCM_IMA_EA_SEAD:
3057 case AV_CODEC_ID_ADPCM_IMA_OKI:
3058 case AV_CODEC_ID_ADPCM_IMA_WS:
3059 case AV_CODEC_ID_ADPCM_G722:
3060 case AV_CODEC_ID_ADPCM_YAMAHA:
3062 case AV_CODEC_ID_DSD_LSBF:
3063 case AV_CODEC_ID_DSD_MSBF:
3064 case AV_CODEC_ID_DSD_LSBF_PLANAR:
3065 case AV_CODEC_ID_DSD_MSBF_PLANAR:
3066 case AV_CODEC_ID_PCM_ALAW:
3067 case AV_CODEC_ID_PCM_MULAW:
3068 case AV_CODEC_ID_PCM_S8:
3069 case AV_CODEC_ID_PCM_S8_PLANAR:
3070 case AV_CODEC_ID_PCM_U8:
3071 case AV_CODEC_ID_PCM_ZORK:
3073 case AV_CODEC_ID_PCM_S16BE:
3074 case AV_CODEC_ID_PCM_S16BE_PLANAR:
3075 case AV_CODEC_ID_PCM_S16LE:
3076 case AV_CODEC_ID_PCM_S16LE_PLANAR:
3077 case AV_CODEC_ID_PCM_U16BE:
3078 case AV_CODEC_ID_PCM_U16LE:
3080 case AV_CODEC_ID_PCM_S24DAUD:
3081 case AV_CODEC_ID_PCM_S24BE:
3082 case AV_CODEC_ID_PCM_S24LE:
3083 case AV_CODEC_ID_PCM_S24LE_PLANAR:
3084 case AV_CODEC_ID_PCM_U24BE:
3085 case AV_CODEC_ID_PCM_U24LE:
3087 case AV_CODEC_ID_PCM_S32BE:
3088 case AV_CODEC_ID_PCM_S32LE:
3089 case AV_CODEC_ID_PCM_S32LE_PLANAR:
3090 case AV_CODEC_ID_PCM_U32BE:
3091 case AV_CODEC_ID_PCM_U32LE:
3092 case AV_CODEC_ID_PCM_F32BE:
3093 case AV_CODEC_ID_PCM_F32LE:
3095 case AV_CODEC_ID_PCM_F64BE:
3096 case AV_CODEC_ID_PCM_F64LE:
3103 enum AVCodecID av_get_pcm_codec(enum AVSampleFormat fmt, int be)
3105 static const enum AVCodecID map[AV_SAMPLE_FMT_NB][2] = {
3106 [AV_SAMPLE_FMT_U8 ] = { AV_CODEC_ID_PCM_U8, AV_CODEC_ID_PCM_U8 },
3107 [AV_SAMPLE_FMT_S16 ] = { AV_CODEC_ID_PCM_S16LE, AV_CODEC_ID_PCM_S16BE },
3108 [AV_SAMPLE_FMT_S32 ] = { AV_CODEC_ID_PCM_S32LE, AV_CODEC_ID_PCM_S32BE },
3109 [AV_SAMPLE_FMT_FLT ] = { AV_CODEC_ID_PCM_F32LE, AV_CODEC_ID_PCM_F32BE },
3110 [AV_SAMPLE_FMT_DBL ] = { AV_CODEC_ID_PCM_F64LE, AV_CODEC_ID_PCM_F64BE },
3111 [AV_SAMPLE_FMT_U8P ] = { AV_CODEC_ID_PCM_U8, AV_CODEC_ID_PCM_U8 },
3112 [AV_SAMPLE_FMT_S16P] = { AV_CODEC_ID_PCM_S16LE, AV_CODEC_ID_PCM_S16BE },
3113 [AV_SAMPLE_FMT_S32P] = { AV_CODEC_ID_PCM_S32LE, AV_CODEC_ID_PCM_S32BE },
3114 [AV_SAMPLE_FMT_FLTP] = { AV_CODEC_ID_PCM_F32LE, AV_CODEC_ID_PCM_F32BE },
3115 [AV_SAMPLE_FMT_DBLP] = { AV_CODEC_ID_PCM_F64LE, AV_CODEC_ID_PCM_F64BE },
3117 if (fmt < 0 || fmt >= AV_SAMPLE_FMT_NB)
3118 return AV_CODEC_ID_NONE;
3119 if (be < 0 || be > 1)
3121 return map[fmt][be];
3124 int av_get_bits_per_sample(enum AVCodecID codec_id)
3127 case AV_CODEC_ID_ADPCM_SBPRO_2:
3129 case AV_CODEC_ID_ADPCM_SBPRO_3:
3131 case AV_CODEC_ID_ADPCM_SBPRO_4:
3132 case AV_CODEC_ID_ADPCM_IMA_WAV:
3133 case AV_CODEC_ID_ADPCM_IMA_QT:
3134 case AV_CODEC_ID_ADPCM_SWF:
3135 case AV_CODEC_ID_ADPCM_MS:
3138 return av_get_exact_bits_per_sample(codec_id);
3142 int av_get_audio_frame_duration(AVCodecContext *avctx, int frame_bytes)
3144 int id, sr, ch, ba, tag, bps;
3146 id = avctx->codec_id;
3147 sr = avctx->sample_rate;
3148 ch = avctx->channels;
3149 ba = avctx->block_align;
3150 tag = avctx->codec_tag;
3151 bps = av_get_exact_bits_per_sample(avctx->codec_id);
3153 /* codecs with an exact constant bits per sample */
3154 if (bps > 0 && ch > 0 && frame_bytes > 0 && ch < 32768 && bps < 32768)
3155 return (frame_bytes * 8LL) / (bps * ch);
3156 bps = avctx->bits_per_coded_sample;
3158 /* codecs with a fixed packet duration */
3160 case AV_CODEC_ID_ADPCM_ADX: return 32;
3161 case AV_CODEC_ID_ADPCM_IMA_QT: return 64;
3162 case AV_CODEC_ID_ADPCM_EA_XAS: return 128;
3163 case AV_CODEC_ID_AMR_NB:
3164 case AV_CODEC_ID_EVRC:
3165 case AV_CODEC_ID_GSM:
3166 case AV_CODEC_ID_QCELP:
3167 case AV_CODEC_ID_RA_288: return 160;
3168 case AV_CODEC_ID_AMR_WB:
3169 case AV_CODEC_ID_GSM_MS: return 320;
3170 case AV_CODEC_ID_MP1: return 384;
3171 case AV_CODEC_ID_ATRAC1: return 512;
3172 case AV_CODEC_ID_ATRAC3: return 1024;
3173 case AV_CODEC_ID_MP2:
3174 case AV_CODEC_ID_MUSEPACK7: return 1152;
3175 case AV_CODEC_ID_AC3: return 1536;
3179 /* calc from sample rate */
3180 if (id == AV_CODEC_ID_TTA)
3181 return 256 * sr / 245;
3184 /* calc from sample rate and channels */
3185 if (id == AV_CODEC_ID_BINKAUDIO_DCT)
3186 return (480 << (sr / 22050)) / ch;
3191 /* calc from block_align */
3192 if (id == AV_CODEC_ID_SIPR) {
3194 case 20: return 160;
3195 case 19: return 144;
3196 case 29: return 288;
3197 case 37: return 480;
3199 } else if (id == AV_CODEC_ID_ILBC) {
3201 case 38: return 160;
3202 case 50: return 240;
3207 if (frame_bytes > 0) {
3208 /* calc from frame_bytes only */
3209 if (id == AV_CODEC_ID_TRUESPEECH)
3210 return 240 * (frame_bytes / 32);
3211 if (id == AV_CODEC_ID_NELLYMOSER)
3212 return 256 * (frame_bytes / 64);
3213 if (id == AV_CODEC_ID_RA_144)
3214 return 160 * (frame_bytes / 20);
3215 if (id == AV_CODEC_ID_G723_1)
3216 return 240 * (frame_bytes / 24);
3219 /* calc from frame_bytes and bits_per_coded_sample */
3220 if (id == AV_CODEC_ID_ADPCM_G726)
3221 return frame_bytes * 8 / bps;
3225 /* calc from frame_bytes and channels */
3227 case AV_CODEC_ID_ADPCM_AFC:
3228 return frame_bytes / (9 * ch) * 16;
3229 case AV_CODEC_ID_ADPCM_DTK:
3230 return frame_bytes / (16 * ch) * 28;
3231 case AV_CODEC_ID_ADPCM_4XM:
3232 case AV_CODEC_ID_ADPCM_IMA_ISS:
3233 return (frame_bytes - 4 * ch) * 2 / ch;
3234 case AV_CODEC_ID_ADPCM_IMA_SMJPEG:
3235 return (frame_bytes - 4) * 2 / ch;
3236 case AV_CODEC_ID_ADPCM_IMA_AMV:
3237 return (frame_bytes - 8) * 2 / ch;
3238 case AV_CODEC_ID_ADPCM_XA:
3239 return (frame_bytes / 128) * 224 / ch;
3240 case AV_CODEC_ID_INTERPLAY_DPCM:
3241 return (frame_bytes - 6 - ch) / ch;
3242 case AV_CODEC_ID_ROQ_DPCM:
3243 return (frame_bytes - 8) / ch;
3244 case AV_CODEC_ID_XAN_DPCM:
3245 return (frame_bytes - 2 * ch) / ch;
3246 case AV_CODEC_ID_MACE3:
3247 return 3 * frame_bytes / ch;
3248 case AV_CODEC_ID_MACE6:
3249 return 6 * frame_bytes / ch;
3250 case AV_CODEC_ID_PCM_LXF:
3251 return 2 * (frame_bytes / (5 * ch));
3252 case AV_CODEC_ID_IAC:
3253 case AV_CODEC_ID_IMC:
3254 return 4 * frame_bytes / ch;
3258 /* calc from frame_bytes, channels, and codec_tag */
3259 if (id == AV_CODEC_ID_SOL_DPCM) {
3261 return frame_bytes / ch;
3263 return frame_bytes * 2 / ch;
3268 /* calc from frame_bytes, channels, and block_align */
3269 int blocks = frame_bytes / ba;
3270 switch (avctx->codec_id) {
3271 case AV_CODEC_ID_ADPCM_IMA_WAV:
3272 if (bps < 2 || bps > 5)
3274 return blocks * (1 + (ba - 4 * ch) / (bps * ch) * 8);
3275 case AV_CODEC_ID_ADPCM_IMA_DK3:
3276 return blocks * (((ba - 16) * 2 / 3 * 4) / ch);
3277 case AV_CODEC_ID_ADPCM_IMA_DK4:
3278 return blocks * (1 + (ba - 4 * ch) * 2 / ch);
3279 case AV_CODEC_ID_ADPCM_IMA_RAD:
3280 return blocks * ((ba - 4 * ch) * 2 / ch);
3281 case AV_CODEC_ID_ADPCM_MS:
3282 return blocks * (2 + (ba - 7 * ch) * 2 / ch);
3287 /* calc from frame_bytes, channels, and bits_per_coded_sample */
3288 switch (avctx->codec_id) {
3289 case AV_CODEC_ID_PCM_DVD:
3292 return 2 * (frame_bytes / ((bps * 2 / 8) * ch));
3293 case AV_CODEC_ID_PCM_BLURAY:
3296 return frame_bytes / ((FFALIGN(ch, 2) * bps) / 8);
3297 case AV_CODEC_ID_S302M:
3298 return 2 * (frame_bytes / ((bps + 4) / 4)) / ch;
3308 int ff_thread_init(AVCodecContext *s)
3315 unsigned int av_xiphlacing(unsigned char *s, unsigned int v)
3329 int ff_match_2uint16(const uint16_t(*tab)[2], int size, int a, int b)
3332 for (i = 0; i < size && !(tab[i][0] == a && tab[i][1] == b); i++) ;
3336 #if FF_API_MISSING_SAMPLE
3337 FF_DISABLE_DEPRECATION_WARNINGS
3338 void av_log_missing_feature(void *avc, const char *feature, int want_sample)
3340 av_log(avc, AV_LOG_WARNING, "%s is not implemented. Update your FFmpeg "
3341 "version to the newest one from Git. If the problem still "
3342 "occurs, it means that your file has a feature which has not "
3343 "been implemented.\n", feature);
3345 av_log_ask_for_sample(avc, NULL);
3348 void av_log_ask_for_sample(void *avc, const char *msg, ...)
3350 va_list argument_list;
3352 va_start(argument_list, msg);
3355 av_vlog(avc, AV_LOG_WARNING, msg, argument_list);
3356 av_log(avc, AV_LOG_WARNING, "If you want to help, upload a sample "
3357 "of this file to ftp://upload.ffmpeg.org/MPlayer/incoming/ "
3358 "and contact the ffmpeg-devel mailing list.\n");
3360 va_end(argument_list);
3362 FF_ENABLE_DEPRECATION_WARNINGS
3363 #endif /* FF_API_MISSING_SAMPLE */
3365 static AVHWAccel *first_hwaccel = NULL;
3366 static AVHWAccel **last_hwaccel = &first_hwaccel;
3368 void av_register_hwaccel(AVHWAccel *hwaccel)
3370 AVHWAccel **p = last_hwaccel;
3371 hwaccel->next = NULL;
3372 while(*p || avpriv_atomic_ptr_cas((void * volatile *)p, NULL, hwaccel))
3374 last_hwaccel = &hwaccel->next;
3377 AVHWAccel *av_hwaccel_next(AVHWAccel *hwaccel)
3379 return hwaccel ? hwaccel->next : first_hwaccel;
3382 int av_lockmgr_register(int (*cb)(void **mutex, enum AVLockOp op))
3385 if (lockmgr_cb(&codec_mutex, AV_LOCK_DESTROY))
3387 if (lockmgr_cb(&avformat_mutex, AV_LOCK_DESTROY))
3394 if (lockmgr_cb(&codec_mutex, AV_LOCK_CREATE))
3396 if (lockmgr_cb(&avformat_mutex, AV_LOCK_CREATE))
3402 int ff_lock_avcodec(AVCodecContext *log_ctx)
3405 if ((*lockmgr_cb)(&codec_mutex, AV_LOCK_OBTAIN))
3408 entangled_thread_counter++;
3409 if (entangled_thread_counter != 1) {
3410 av_log(log_ctx, AV_LOG_ERROR, "Insufficient thread locking around avcodec_open/close()\n");
3412 av_log(log_ctx, AV_LOG_ERROR, "No lock manager is set, please see av_lockmgr_register()\n");
3413 ff_avcodec_locked = 1;
3414 ff_unlock_avcodec();
3415 return AVERROR(EINVAL);
3417 av_assert0(!ff_avcodec_locked);
3418 ff_avcodec_locked = 1;
3422 int ff_unlock_avcodec(void)
3424 av_assert0(ff_avcodec_locked);
3425 ff_avcodec_locked = 0;
3426 entangled_thread_counter--;
3428 if ((*lockmgr_cb)(&codec_mutex, AV_LOCK_RELEASE))
3434 int avpriv_lock_avformat(void)
3437 if ((*lockmgr_cb)(&avformat_mutex, AV_LOCK_OBTAIN))
3443 int avpriv_unlock_avformat(void)
3446 if ((*lockmgr_cb)(&avformat_mutex, AV_LOCK_RELEASE))
3452 unsigned int avpriv_toupper4(unsigned int x)
3454 return av_toupper(x & 0xFF) +
3455 (av_toupper((x >> 8) & 0xFF) << 8) +
3456 (av_toupper((x >> 16) & 0xFF) << 16) +
3457 (av_toupper((x >> 24) & 0xFF) << 24);
3460 int ff_thread_ref_frame(ThreadFrame *dst, ThreadFrame *src)
3464 dst->owner = src->owner;
3466 ret = av_frame_ref(dst->f, src->f);
3470 if (src->progress &&
3471 !(dst->progress = av_buffer_ref(src->progress))) {
3472 ff_thread_release_buffer(dst->owner, dst);
3473 return AVERROR(ENOMEM);
3481 enum AVPixelFormat ff_thread_get_format(AVCodecContext *avctx, const enum AVPixelFormat *fmt)
3483 return ff_get_format(avctx, fmt);
3486 int ff_thread_get_buffer(AVCodecContext *avctx, ThreadFrame *f, int flags)
3489 return ff_get_buffer(avctx, f->f, flags);
3492 void ff_thread_release_buffer(AVCodecContext *avctx, ThreadFrame *f)
3495 av_frame_unref(f->f);
3498 void ff_thread_finish_setup(AVCodecContext *avctx)
3502 void ff_thread_report_progress(ThreadFrame *f, int progress, int field)
3506 void ff_thread_await_progress(ThreadFrame *f, int progress, int field)
3510 int ff_thread_can_start_frame(AVCodecContext *avctx)
3515 int ff_alloc_entries(AVCodecContext *avctx, int count)
3520 void ff_reset_entries(AVCodecContext *avctx)
3524 void ff_thread_await_progress2(AVCodecContext *avctx, int field, int thread, int shift)
3528 void ff_thread_report_progress2(AVCodecContext *avctx, int field, int thread, int n)
3534 enum AVMediaType avcodec_get_type(enum AVCodecID codec_id)
3536 AVCodec *c= avcodec_find_decoder(codec_id);
3538 c= avcodec_find_encoder(codec_id);
3542 if (codec_id <= AV_CODEC_ID_NONE)
3543 return AVMEDIA_TYPE_UNKNOWN;
3544 else if (codec_id < AV_CODEC_ID_FIRST_AUDIO)
3545 return AVMEDIA_TYPE_VIDEO;
3546 else if (codec_id < AV_CODEC_ID_FIRST_SUBTITLE)
3547 return AVMEDIA_TYPE_AUDIO;
3548 else if (codec_id < AV_CODEC_ID_FIRST_UNKNOWN)
3549 return AVMEDIA_TYPE_SUBTITLE;
3551 return AVMEDIA_TYPE_UNKNOWN;
3554 int avcodec_is_open(AVCodecContext *s)
3556 return !!s->internal;
3559 int avpriv_bprint_to_extradata(AVCodecContext *avctx, struct AVBPrint *buf)
3564 ret = av_bprint_finalize(buf, &str);
3567 avctx->extradata = str;
3568 /* Note: the string is NUL terminated (so extradata can be read as a
3569 * string), but the ending character is not accounted in the size (in
3570 * binary formats you are likely not supposed to mux that character). When
3571 * extradata is copied, it is also padded with FF_INPUT_BUFFER_PADDING_SIZE
3573 avctx->extradata_size = buf->len;
3577 const uint8_t *avpriv_find_start_code(const uint8_t *av_restrict p,
3579 uint32_t *av_restrict state)
3583 av_assert0(p <= end);
3587 for (i = 0; i < 3; i++) {
3588 uint32_t tmp = *state << 8;
3589 *state = tmp + *(p++);
3590 if (tmp == 0x100 || p == end)
3595 if (p[-1] > 1 ) p += 3;
3596 else if (p[-2] ) p += 2;
3597 else if (p[-3]|(p[-1]-1)) p++;
3604 p = FFMIN(p, end) - 4;
3605 *state = AV_RB32(p);