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"
44 #include "libavutil/opt.h"
46 #include "mpegvideo.h"
48 #include "frame_thread_encoder.h"
51 #include "bytestream.h"
64 #include "compat/w32pthreads.h"
66 #include "compat/os2threads.h"
69 #if HAVE_PTHREADS || HAVE_W32THREADS || HAVE_OS2THREADS
70 static int default_lockmgr_cb(void **arg, enum AVLockOp op)
72 void * volatile * mutex = arg;
80 pthread_mutex_t *tmp = av_malloc(sizeof(pthread_mutex_t));
82 return AVERROR(ENOMEM);
83 if ((err = pthread_mutex_init(tmp, NULL))) {
87 if (avpriv_atomic_ptr_cas(mutex, NULL, tmp)) {
88 pthread_mutex_destroy(tmp);
93 if ((err = pthread_mutex_lock(*mutex)))
98 if ((err = pthread_mutex_unlock(*mutex)))
102 case AV_LOCK_DESTROY:
104 pthread_mutex_destroy(*mutex);
106 avpriv_atomic_ptr_cas(mutex, *mutex, NULL);
111 static int (*lockmgr_cb)(void **mutex, enum AVLockOp op) = default_lockmgr_cb;
113 static int (*lockmgr_cb)(void **mutex, enum AVLockOp op) = NULL;
117 volatile int ff_avcodec_locked;
118 static int volatile entangled_thread_counter = 0;
119 static void *codec_mutex;
120 static void *avformat_mutex;
122 #if CONFIG_RAISE_MAJOR
123 # define LIBNAME "LIBAVCODEC_155"
125 # define LIBNAME "LIBAVCODEC_55"
128 #if FF_API_FAST_MALLOC && CONFIG_SHARED && HAVE_SYMVER
129 FF_SYMVER(void*, av_fast_realloc, (void *ptr, unsigned int *size, size_t min_size), LIBNAME)
131 return av_fast_realloc(ptr, size, min_size);
134 FF_SYMVER(void, av_fast_malloc, (void *ptr, unsigned int *size, size_t min_size), LIBNAME)
136 av_fast_malloc(ptr, size, min_size);
140 static inline int ff_fast_malloc(void *ptr, unsigned int *size, size_t min_size, int zero_realloc)
143 if (min_size < *size)
145 min_size = FFMAX(17 * min_size / 16 + 32, min_size);
147 *p = zero_realloc ? av_mallocz(min_size) : av_malloc(min_size);
154 void av_fast_padded_malloc(void *ptr, unsigned int *size, size_t min_size)
157 if (min_size > SIZE_MAX - FF_INPUT_BUFFER_PADDING_SIZE) {
162 if (!ff_fast_malloc(p, size, min_size + FF_INPUT_BUFFER_PADDING_SIZE, 1))
163 memset(*p + min_size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
166 void av_fast_padded_mallocz(void *ptr, unsigned int *size, size_t min_size)
169 if (min_size > SIZE_MAX - FF_INPUT_BUFFER_PADDING_SIZE) {
174 if (!ff_fast_malloc(p, size, min_size + FF_INPUT_BUFFER_PADDING_SIZE, 1))
175 memset(*p, 0, min_size + FF_INPUT_BUFFER_PADDING_SIZE);
178 /* encoder management */
179 static AVCodec *first_avcodec = NULL;
180 static AVCodec **last_avcodec = &first_avcodec;
182 AVCodec *av_codec_next(const AVCodec *c)
187 return first_avcodec;
190 static av_cold void avcodec_init(void)
192 static int initialized = 0;
194 if (initialized != 0)
199 ff_me_cmp_init_static();
202 int av_codec_is_encoder(const AVCodec *codec)
204 return codec && (codec->encode_sub || codec->encode2);
207 int av_codec_is_decoder(const AVCodec *codec)
209 return codec && codec->decode;
212 av_cold void avcodec_register(AVCodec *codec)
219 while(*p || avpriv_atomic_ptr_cas((void * volatile *)p, NULL, codec))
221 last_avcodec = &codec->next;
223 if (codec->init_static_data)
224 codec->init_static_data(codec);
228 unsigned avcodec_get_edge_width(void)
234 #if FF_API_SET_DIMENSIONS
235 void avcodec_set_dimensions(AVCodecContext *s, int width, int height)
237 int ret = ff_set_dimensions(s, width, height);
239 av_log(s, AV_LOG_WARNING, "Failed to set dimensions %d %d\n", width, height);
244 int ff_set_dimensions(AVCodecContext *s, int width, int height)
246 int ret = av_image_check_size(width, height, 0, s);
251 s->coded_width = width;
252 s->coded_height = height;
253 s->width = FF_CEIL_RSHIFT(width, s->lowres);
254 s->height = FF_CEIL_RSHIFT(height, s->lowres);
259 int ff_set_sar(AVCodecContext *avctx, AVRational sar)
261 int ret = av_image_check_sar(avctx->width, avctx->height, sar);
264 av_log(avctx, AV_LOG_WARNING, "ignoring invalid SAR: %u/%u\n",
266 avctx->sample_aspect_ratio = (AVRational){ 0, 1 };
269 avctx->sample_aspect_ratio = sar;
274 int ff_side_data_update_matrix_encoding(AVFrame *frame,
275 enum AVMatrixEncoding matrix_encoding)
277 AVFrameSideData *side_data;
278 enum AVMatrixEncoding *data;
280 side_data = av_frame_get_side_data(frame, AV_FRAME_DATA_MATRIXENCODING);
282 side_data = av_frame_new_side_data(frame, AV_FRAME_DATA_MATRIXENCODING,
283 sizeof(enum AVMatrixEncoding));
286 return AVERROR(ENOMEM);
288 data = (enum AVMatrixEncoding*)side_data->data;
289 *data = matrix_encoding;
294 void avcodec_align_dimensions2(AVCodecContext *s, int *width, int *height,
295 int linesize_align[AV_NUM_DATA_POINTERS])
301 switch (s->pix_fmt) {
302 case AV_PIX_FMT_YUV420P:
303 case AV_PIX_FMT_YUYV422:
304 case AV_PIX_FMT_YVYU422:
305 case AV_PIX_FMT_UYVY422:
306 case AV_PIX_FMT_YUV422P:
307 case AV_PIX_FMT_YUV440P:
308 case AV_PIX_FMT_YUV444P:
309 case AV_PIX_FMT_GBRAP:
310 case AV_PIX_FMT_GBRP:
311 case AV_PIX_FMT_GRAY8:
312 case AV_PIX_FMT_GRAY16BE:
313 case AV_PIX_FMT_GRAY16LE:
314 case AV_PIX_FMT_YUVJ420P:
315 case AV_PIX_FMT_YUVJ422P:
316 case AV_PIX_FMT_YUVJ440P:
317 case AV_PIX_FMT_YUVJ444P:
318 case AV_PIX_FMT_YUVA420P:
319 case AV_PIX_FMT_YUVA422P:
320 case AV_PIX_FMT_YUVA444P:
321 case AV_PIX_FMT_YUV420P9LE:
322 case AV_PIX_FMT_YUV420P9BE:
323 case AV_PIX_FMT_YUV420P10LE:
324 case AV_PIX_FMT_YUV420P10BE:
325 case AV_PIX_FMT_YUV420P12LE:
326 case AV_PIX_FMT_YUV420P12BE:
327 case AV_PIX_FMT_YUV420P14LE:
328 case AV_PIX_FMT_YUV420P14BE:
329 case AV_PIX_FMT_YUV420P16LE:
330 case AV_PIX_FMT_YUV420P16BE:
331 case AV_PIX_FMT_YUVA420P9LE:
332 case AV_PIX_FMT_YUVA420P9BE:
333 case AV_PIX_FMT_YUVA420P10LE:
334 case AV_PIX_FMT_YUVA420P10BE:
335 case AV_PIX_FMT_YUVA420P16LE:
336 case AV_PIX_FMT_YUVA420P16BE:
337 case AV_PIX_FMT_YUV422P9LE:
338 case AV_PIX_FMT_YUV422P9BE:
339 case AV_PIX_FMT_YUV422P10LE:
340 case AV_PIX_FMT_YUV422P10BE:
341 case AV_PIX_FMT_YUV422P12LE:
342 case AV_PIX_FMT_YUV422P12BE:
343 case AV_PIX_FMT_YUV422P14LE:
344 case AV_PIX_FMT_YUV422P14BE:
345 case AV_PIX_FMT_YUV422P16LE:
346 case AV_PIX_FMT_YUV422P16BE:
347 case AV_PIX_FMT_YUVA422P9LE:
348 case AV_PIX_FMT_YUVA422P9BE:
349 case AV_PIX_FMT_YUVA422P10LE:
350 case AV_PIX_FMT_YUVA422P10BE:
351 case AV_PIX_FMT_YUVA422P16LE:
352 case AV_PIX_FMT_YUVA422P16BE:
353 case AV_PIX_FMT_YUV444P9LE:
354 case AV_PIX_FMT_YUV444P9BE:
355 case AV_PIX_FMT_YUV444P10LE:
356 case AV_PIX_FMT_YUV444P10BE:
357 case AV_PIX_FMT_YUV444P12LE:
358 case AV_PIX_FMT_YUV444P12BE:
359 case AV_PIX_FMT_YUV444P14LE:
360 case AV_PIX_FMT_YUV444P14BE:
361 case AV_PIX_FMT_YUV444P16LE:
362 case AV_PIX_FMT_YUV444P16BE:
363 case AV_PIX_FMT_YUVA444P9LE:
364 case AV_PIX_FMT_YUVA444P9BE:
365 case AV_PIX_FMT_YUVA444P10LE:
366 case AV_PIX_FMT_YUVA444P10BE:
367 case AV_PIX_FMT_YUVA444P16LE:
368 case AV_PIX_FMT_YUVA444P16BE:
369 case AV_PIX_FMT_GBRP9LE:
370 case AV_PIX_FMT_GBRP9BE:
371 case AV_PIX_FMT_GBRP10LE:
372 case AV_PIX_FMT_GBRP10BE:
373 case AV_PIX_FMT_GBRP12LE:
374 case AV_PIX_FMT_GBRP12BE:
375 case AV_PIX_FMT_GBRP14LE:
376 case AV_PIX_FMT_GBRP14BE:
377 w_align = 16; //FIXME assume 16 pixel per macroblock
378 h_align = 16 * 2; // interlaced needs 2 macroblocks height
380 case AV_PIX_FMT_YUV411P:
381 case AV_PIX_FMT_YUVJ411P:
382 case AV_PIX_FMT_UYYVYY411:
386 case AV_PIX_FMT_YUV410P:
387 if (s->codec_id == AV_CODEC_ID_SVQ1) {
392 case AV_PIX_FMT_RGB555:
393 if (s->codec_id == AV_CODEC_ID_RPZA) {
398 case AV_PIX_FMT_PAL8:
399 case AV_PIX_FMT_BGR8:
400 case AV_PIX_FMT_RGB8:
401 if (s->codec_id == AV_CODEC_ID_SMC ||
402 s->codec_id == AV_CODEC_ID_CINEPAK) {
407 case AV_PIX_FMT_BGR24:
408 if ((s->codec_id == AV_CODEC_ID_MSZH) ||
409 (s->codec_id == AV_CODEC_ID_ZLIB)) {
414 case AV_PIX_FMT_RGB24:
415 if (s->codec_id == AV_CODEC_ID_CINEPAK) {
426 if (s->codec_id == AV_CODEC_ID_IFF_ILBM || s->codec_id == AV_CODEC_ID_IFF_BYTERUN1) {
427 w_align = FFMAX(w_align, 8);
430 *width = FFALIGN(*width, w_align);
431 *height = FFALIGN(*height, h_align);
432 if (s->codec_id == AV_CODEC_ID_H264 || s->lowres)
433 // some of the optimized chroma MC reads one line too much
434 // which is also done in mpeg decoders with lowres > 0
437 for (i = 0; i < 4; i++)
438 linesize_align[i] = STRIDE_ALIGN;
441 void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height)
443 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(s->pix_fmt);
444 int chroma_shift = desc->log2_chroma_w;
445 int linesize_align[AV_NUM_DATA_POINTERS];
448 avcodec_align_dimensions2(s, width, height, linesize_align);
449 align = FFMAX(linesize_align[0], linesize_align[3]);
450 linesize_align[1] <<= chroma_shift;
451 linesize_align[2] <<= chroma_shift;
452 align = FFMAX3(align, linesize_align[1], linesize_align[2]);
453 *width = FFALIGN(*width, align);
456 int avcodec_enum_to_chroma_pos(int *xpos, int *ypos, enum AVChromaLocation pos)
458 if (pos <= AVCHROMA_LOC_UNSPECIFIED || pos >= AVCHROMA_LOC_NB)
459 return AVERROR(EINVAL);
462 *xpos = (pos&1) * 128;
463 *ypos = ((pos>>1)^(pos<4)) * 128;
468 enum AVChromaLocation avcodec_chroma_pos_to_enum(int xpos, int ypos)
472 for (pos = AVCHROMA_LOC_UNSPECIFIED + 1; pos < AVCHROMA_LOC_NB; pos++) {
473 if (avcodec_enum_to_chroma_pos(&xout, &yout, pos) == 0 && xout == xpos && yout == ypos)
476 return AVCHROMA_LOC_UNSPECIFIED;
479 int avcodec_fill_audio_frame(AVFrame *frame, int nb_channels,
480 enum AVSampleFormat sample_fmt, const uint8_t *buf,
481 int buf_size, int align)
483 int ch, planar, needed_size, ret = 0;
485 needed_size = av_samples_get_buffer_size(NULL, nb_channels,
486 frame->nb_samples, sample_fmt,
488 if (buf_size < needed_size)
489 return AVERROR(EINVAL);
491 planar = av_sample_fmt_is_planar(sample_fmt);
492 if (planar && nb_channels > AV_NUM_DATA_POINTERS) {
493 if (!(frame->extended_data = av_mallocz_array(nb_channels,
494 sizeof(*frame->extended_data))))
495 return AVERROR(ENOMEM);
497 frame->extended_data = frame->data;
500 if ((ret = av_samples_fill_arrays(frame->extended_data, &frame->linesize[0],
501 (uint8_t *)(intptr_t)buf, nb_channels, frame->nb_samples,
502 sample_fmt, align)) < 0) {
503 if (frame->extended_data != frame->data)
504 av_freep(&frame->extended_data);
507 if (frame->extended_data != frame->data) {
508 for (ch = 0; ch < AV_NUM_DATA_POINTERS; ch++)
509 frame->data[ch] = frame->extended_data[ch];
515 static int update_frame_pool(AVCodecContext *avctx, AVFrame *frame)
517 FramePool *pool = avctx->internal->pool;
520 switch (avctx->codec_type) {
521 case AVMEDIA_TYPE_VIDEO: {
524 int w = frame->width;
525 int h = frame->height;
526 int tmpsize, unaligned;
528 if (pool->format == frame->format &&
529 pool->width == frame->width && pool->height == frame->height)
532 avcodec_align_dimensions2(avctx, &w, &h, pool->stride_align);
535 // NOTE: do not align linesizes individually, this breaks e.g. assumptions
536 // that linesize[0] == 2*linesize[1] in the MPEG-encoder for 4:2:2
537 av_image_fill_linesizes(picture.linesize, avctx->pix_fmt, w);
538 // increase alignment of w for next try (rhs gives the lowest bit set in w)
542 for (i = 0; i < 4; i++)
543 unaligned |= picture.linesize[i] % pool->stride_align[i];
546 tmpsize = av_image_fill_pointers(picture.data, avctx->pix_fmt, h,
547 NULL, picture.linesize);
551 for (i = 0; i < 3 && picture.data[i + 1]; i++)
552 size[i] = picture.data[i + 1] - picture.data[i];
553 size[i] = tmpsize - (picture.data[i] - picture.data[0]);
555 for (i = 0; i < 4; i++) {
556 av_buffer_pool_uninit(&pool->pools[i]);
557 pool->linesize[i] = picture.linesize[i];
559 pool->pools[i] = av_buffer_pool_init(size[i] + 16 + STRIDE_ALIGN - 1,
560 CONFIG_MEMORY_POISONING ?
563 if (!pool->pools[i]) {
564 ret = AVERROR(ENOMEM);
569 pool->format = frame->format;
570 pool->width = frame->width;
571 pool->height = frame->height;
575 case AVMEDIA_TYPE_AUDIO: {
576 int ch = av_frame_get_channels(frame); //av_get_channel_layout_nb_channels(frame->channel_layout);
577 int planar = av_sample_fmt_is_planar(frame->format);
578 int planes = planar ? ch : 1;
580 if (pool->format == frame->format && pool->planes == planes &&
581 pool->channels == ch && frame->nb_samples == pool->samples)
584 av_buffer_pool_uninit(&pool->pools[0]);
585 ret = av_samples_get_buffer_size(&pool->linesize[0], ch,
586 frame->nb_samples, frame->format, 0);
590 pool->pools[0] = av_buffer_pool_init(pool->linesize[0], NULL);
591 if (!pool->pools[0]) {
592 ret = AVERROR(ENOMEM);
596 pool->format = frame->format;
597 pool->planes = planes;
599 pool->samples = frame->nb_samples;
602 default: av_assert0(0);
606 for (i = 0; i < 4; i++)
607 av_buffer_pool_uninit(&pool->pools[i]);
609 pool->planes = pool->channels = pool->samples = 0;
610 pool->width = pool->height = 0;
614 static int audio_get_buffer(AVCodecContext *avctx, AVFrame *frame)
616 FramePool *pool = avctx->internal->pool;
617 int planes = pool->planes;
620 frame->linesize[0] = pool->linesize[0];
622 if (planes > AV_NUM_DATA_POINTERS) {
623 frame->extended_data = av_mallocz_array(planes, sizeof(*frame->extended_data));
624 frame->nb_extended_buf = planes - AV_NUM_DATA_POINTERS;
625 frame->extended_buf = av_mallocz_array(frame->nb_extended_buf,
626 sizeof(*frame->extended_buf));
627 if (!frame->extended_data || !frame->extended_buf) {
628 av_freep(&frame->extended_data);
629 av_freep(&frame->extended_buf);
630 return AVERROR(ENOMEM);
633 frame->extended_data = frame->data;
634 av_assert0(frame->nb_extended_buf == 0);
637 for (i = 0; i < FFMIN(planes, AV_NUM_DATA_POINTERS); i++) {
638 frame->buf[i] = av_buffer_pool_get(pool->pools[0]);
641 frame->extended_data[i] = frame->data[i] = frame->buf[i]->data;
643 for (i = 0; i < frame->nb_extended_buf; i++) {
644 frame->extended_buf[i] = av_buffer_pool_get(pool->pools[0]);
645 if (!frame->extended_buf[i])
647 frame->extended_data[i + AV_NUM_DATA_POINTERS] = frame->extended_buf[i]->data;
650 if (avctx->debug & FF_DEBUG_BUFFERS)
651 av_log(avctx, AV_LOG_DEBUG, "default_get_buffer called on frame %p", frame);
655 av_frame_unref(frame);
656 return AVERROR(ENOMEM);
659 static int video_get_buffer(AVCodecContext *s, AVFrame *pic)
661 FramePool *pool = s->internal->pool;
664 if (pic->data[0] != NULL) {
665 av_log(s, AV_LOG_ERROR, "pic->data[0]!=NULL in avcodec_default_get_buffer\n");
669 memset(pic->data, 0, sizeof(pic->data));
670 pic->extended_data = pic->data;
672 for (i = 0; i < 4 && pool->pools[i]; i++) {
673 pic->linesize[i] = pool->linesize[i];
675 pic->buf[i] = av_buffer_pool_get(pool->pools[i]);
679 pic->data[i] = pic->buf[i]->data;
681 for (; i < AV_NUM_DATA_POINTERS; i++) {
683 pic->linesize[i] = 0;
685 if (pic->data[1] && !pic->data[2])
686 avpriv_set_systematic_pal2((uint32_t *)pic->data[1], s->pix_fmt);
688 if (s->debug & FF_DEBUG_BUFFERS)
689 av_log(s, AV_LOG_DEBUG, "default_get_buffer called on pic %p\n", pic);
694 return AVERROR(ENOMEM);
697 void avpriv_color_frame(AVFrame *frame, const int c[4])
699 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(frame->format);
702 av_assert0(desc->flags & AV_PIX_FMT_FLAG_PLANAR);
704 for (p = 0; p<desc->nb_components; p++) {
705 uint8_t *dst = frame->data[p];
706 int is_chroma = p == 1 || p == 2;
707 int bytes = is_chroma ? FF_CEIL_RSHIFT(frame->width, desc->log2_chroma_w) : frame->width;
708 int height = is_chroma ? FF_CEIL_RSHIFT(frame->height, desc->log2_chroma_h) : frame->height;
709 for (y = 0; y < height; y++) {
710 if (desc->comp[0].depth_minus1 >= 8) {
711 for (x = 0; x<bytes; x++)
712 ((uint16_t*)dst)[x] = c[p];
714 memset(dst, c[p], bytes);
715 dst += frame->linesize[p];
720 int avcodec_default_get_buffer2(AVCodecContext *avctx, AVFrame *frame, int flags)
724 if ((ret = update_frame_pool(avctx, frame)) < 0)
727 #if FF_API_GET_BUFFER
728 FF_DISABLE_DEPRECATION_WARNINGS
729 frame->type = FF_BUFFER_TYPE_INTERNAL;
730 FF_ENABLE_DEPRECATION_WARNINGS
733 switch (avctx->codec_type) {
734 case AVMEDIA_TYPE_VIDEO:
735 return video_get_buffer(avctx, frame);
736 case AVMEDIA_TYPE_AUDIO:
737 return audio_get_buffer(avctx, frame);
743 int ff_init_buffer_info(AVCodecContext *avctx, AVFrame *frame)
745 AVPacket *pkt = avctx->internal->pkt;
749 AVFrameSideData *frame_sd;
751 frame->pkt_pts = pkt->pts;
752 av_frame_set_pkt_pos (frame, pkt->pos);
753 av_frame_set_pkt_duration(frame, pkt->duration);
754 av_frame_set_pkt_size (frame, pkt->size);
756 /* copy the replaygain data to the output frame */
757 packet_sd = av_packet_get_side_data(pkt, AV_PKT_DATA_REPLAYGAIN, &size);
759 frame_sd = av_frame_new_side_data(frame, AV_FRAME_DATA_REPLAYGAIN, size);
761 return AVERROR(ENOMEM);
763 memcpy(frame_sd->data, packet_sd, size);
766 /* copy the displaymatrix to the output frame */
767 packet_sd = av_packet_get_side_data(pkt, AV_PKT_DATA_DISPLAYMATRIX, &size);
769 frame_sd = av_frame_new_side_data(frame, AV_FRAME_DATA_DISPLAYMATRIX, size);
771 return AVERROR(ENOMEM);
773 memcpy(frame_sd->data, packet_sd, size);
776 frame->pkt_pts = AV_NOPTS_VALUE;
777 av_frame_set_pkt_pos (frame, -1);
778 av_frame_set_pkt_duration(frame, 0);
779 av_frame_set_pkt_size (frame, -1);
781 frame->reordered_opaque = avctx->reordered_opaque;
783 #if FF_API_AVFRAME_COLORSPACE
784 if (frame->color_primaries == AVCOL_PRI_UNSPECIFIED)
785 frame->color_primaries = avctx->color_primaries;
786 if (frame->color_trc == AVCOL_TRC_UNSPECIFIED)
787 frame->color_trc = avctx->color_trc;
788 if (av_frame_get_colorspace(frame) == AVCOL_SPC_UNSPECIFIED)
789 av_frame_set_colorspace(frame, avctx->colorspace);
790 if (av_frame_get_color_range(frame) == AVCOL_RANGE_UNSPECIFIED)
791 av_frame_set_color_range(frame, avctx->color_range);
792 if (frame->chroma_location == AVCHROMA_LOC_UNSPECIFIED)
793 frame->chroma_location = avctx->chroma_sample_location;
796 switch (avctx->codec->type) {
797 case AVMEDIA_TYPE_VIDEO:
798 frame->format = avctx->pix_fmt;
799 if (!frame->sample_aspect_ratio.num)
800 frame->sample_aspect_ratio = avctx->sample_aspect_ratio;
802 if (frame->width && frame->height &&
803 av_image_check_sar(frame->width, frame->height,
804 frame->sample_aspect_ratio) < 0) {
805 av_log(avctx, AV_LOG_WARNING, "ignoring invalid SAR: %u/%u\n",
806 frame->sample_aspect_ratio.num,
807 frame->sample_aspect_ratio.den);
808 frame->sample_aspect_ratio = (AVRational){ 0, 1 };
812 case AVMEDIA_TYPE_AUDIO:
813 if (!frame->sample_rate)
814 frame->sample_rate = avctx->sample_rate;
815 if (frame->format < 0)
816 frame->format = avctx->sample_fmt;
817 if (!frame->channel_layout) {
818 if (avctx->channel_layout) {
819 if (av_get_channel_layout_nb_channels(avctx->channel_layout) !=
821 av_log(avctx, AV_LOG_ERROR, "Inconsistent channel "
823 return AVERROR(EINVAL);
826 frame->channel_layout = avctx->channel_layout;
828 if (avctx->channels > FF_SANE_NB_CHANNELS) {
829 av_log(avctx, AV_LOG_ERROR, "Too many channels: %d.\n",
831 return AVERROR(ENOSYS);
835 av_frame_set_channels(frame, avctx->channels);
841 #if FF_API_GET_BUFFER
842 FF_DISABLE_DEPRECATION_WARNINGS
843 int avcodec_default_get_buffer(AVCodecContext *avctx, AVFrame *frame)
845 return avcodec_default_get_buffer2(avctx, frame, 0);
848 typedef struct CompatReleaseBufPriv {
849 AVCodecContext avctx;
851 uint8_t avframe_padding[1024]; // hack to allow linking to a avutil with larger AVFrame
852 } CompatReleaseBufPriv;
854 static void compat_free_buffer(void *opaque, uint8_t *data)
856 CompatReleaseBufPriv *priv = opaque;
857 if (priv->avctx.release_buffer)
858 priv->avctx.release_buffer(&priv->avctx, &priv->frame);
862 static void compat_release_buffer(void *opaque, uint8_t *data)
864 AVBufferRef *buf = opaque;
865 av_buffer_unref(&buf);
867 FF_ENABLE_DEPRECATION_WARNINGS
870 int ff_decode_frame_props(AVCodecContext *avctx, AVFrame *frame)
872 return ff_init_buffer_info(avctx, frame);
875 static int get_buffer_internal(AVCodecContext *avctx, AVFrame *frame, int flags)
877 const AVHWAccel *hwaccel = avctx->hwaccel;
878 int override_dimensions = 1;
881 if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
882 if ((ret = av_image_check_size(avctx->width, avctx->height, 0, avctx)) < 0 || avctx->pix_fmt<0) {
883 av_log(avctx, AV_LOG_ERROR, "video_get_buffer: image parameters invalid\n");
884 return AVERROR(EINVAL);
887 if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
888 if (frame->width <= 0 || frame->height <= 0) {
889 frame->width = FFMAX(avctx->width, FF_CEIL_RSHIFT(avctx->coded_width, avctx->lowres));
890 frame->height = FFMAX(avctx->height, FF_CEIL_RSHIFT(avctx->coded_height, avctx->lowres));
891 override_dimensions = 0;
894 ret = ff_decode_frame_props(avctx, frame);
897 if ((ret = ff_init_buffer_info(avctx, frame)) < 0)
900 if (hwaccel && hwaccel->alloc_frame) {
901 ret = hwaccel->alloc_frame(avctx, frame);
905 #if FF_API_GET_BUFFER
906 FF_DISABLE_DEPRECATION_WARNINGS
908 * Wrap an old get_buffer()-allocated buffer in a bunch of AVBuffers.
909 * We wrap each plane in its own AVBuffer. Each of those has a reference to
910 * a dummy AVBuffer as its private data, unreffing it on free.
911 * When all the planes are freed, the dummy buffer's free callback calls
914 if (avctx->get_buffer) {
915 CompatReleaseBufPriv *priv = NULL;
916 AVBufferRef *dummy_buf = NULL;
919 if (flags & AV_GET_BUFFER_FLAG_REF)
920 frame->reference = 1;
922 ret = avctx->get_buffer(avctx, frame);
926 /* return if the buffers are already set up
927 * this would happen e.g. when a custom get_buffer() calls
928 * avcodec_default_get_buffer
933 priv = av_mallocz(sizeof(*priv));
935 ret = AVERROR(ENOMEM);
938 priv->avctx = *avctx;
939 priv->frame = *frame;
941 dummy_buf = av_buffer_create(NULL, 0, compat_free_buffer, priv, 0);
943 ret = AVERROR(ENOMEM);
947 #define WRAP_PLANE(ref_out, data, data_size) \
949 AVBufferRef *dummy_ref = av_buffer_ref(dummy_buf); \
951 ret = AVERROR(ENOMEM); \
954 ref_out = av_buffer_create(data, data_size, compat_release_buffer, \
957 av_frame_unref(frame); \
958 ret = AVERROR(ENOMEM); \
963 if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
964 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(frame->format);
966 planes = av_pix_fmt_count_planes(frame->format);
967 /* workaround for AVHWAccel plane count of 0, buf[0] is used as
968 check for allocated buffers: make libavcodec happy */
969 if (desc && desc->flags & AV_PIX_FMT_FLAG_HWACCEL)
971 if (!desc || planes <= 0) {
972 ret = AVERROR(EINVAL);
976 for (i = 0; i < planes; i++) {
977 int v_shift = (i == 1 || i == 2) ? desc->log2_chroma_h : 0;
978 int plane_size = (frame->height >> v_shift) * frame->linesize[i];
980 WRAP_PLANE(frame->buf[i], frame->data[i], plane_size);
983 int planar = av_sample_fmt_is_planar(frame->format);
984 planes = planar ? avctx->channels : 1;
986 if (planes > FF_ARRAY_ELEMS(frame->buf)) {
987 frame->nb_extended_buf = planes - FF_ARRAY_ELEMS(frame->buf);
988 frame->extended_buf = av_malloc_array(sizeof(*frame->extended_buf),
989 frame->nb_extended_buf);
990 if (!frame->extended_buf) {
991 ret = AVERROR(ENOMEM);
996 for (i = 0; i < FFMIN(planes, FF_ARRAY_ELEMS(frame->buf)); i++)
997 WRAP_PLANE(frame->buf[i], frame->extended_data[i], frame->linesize[0]);
999 for (i = 0; i < frame->nb_extended_buf; i++)
1000 WRAP_PLANE(frame->extended_buf[i],
1001 frame->extended_data[i + FF_ARRAY_ELEMS(frame->buf)],
1002 frame->linesize[0]);
1005 av_buffer_unref(&dummy_buf);
1008 frame->width = avctx->width;
1009 frame->height = avctx->height;
1014 avctx->release_buffer(avctx, frame);
1016 av_buffer_unref(&dummy_buf);
1019 FF_ENABLE_DEPRECATION_WARNINGS
1022 ret = avctx->get_buffer2(avctx, frame, flags);
1025 if (avctx->codec_type == AVMEDIA_TYPE_VIDEO && !override_dimensions) {
1026 frame->width = avctx->width;
1027 frame->height = avctx->height;
1033 int ff_get_buffer(AVCodecContext *avctx, AVFrame *frame, int flags)
1035 int ret = get_buffer_internal(avctx, frame, flags);
1037 av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
1041 static int reget_buffer_internal(AVCodecContext *avctx, AVFrame *frame)
1046 av_assert0(avctx->codec_type == AVMEDIA_TYPE_VIDEO);
1048 if (frame->data[0] && (frame->width != avctx->width || frame->height != avctx->height || frame->format != avctx->pix_fmt)) {
1049 av_log(avctx, AV_LOG_WARNING, "Picture changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s in reget buffer()\n",
1050 frame->width, frame->height, av_get_pix_fmt_name(frame->format), avctx->width, avctx->height, av_get_pix_fmt_name(avctx->pix_fmt));
1051 av_frame_unref(frame);
1054 ff_init_buffer_info(avctx, frame);
1056 if (!frame->data[0])
1057 return ff_get_buffer(avctx, frame, AV_GET_BUFFER_FLAG_REF);
1059 if (av_frame_is_writable(frame))
1060 return ff_decode_frame_props(avctx, frame);
1062 tmp = av_frame_alloc();
1064 return AVERROR(ENOMEM);
1066 av_frame_move_ref(tmp, frame);
1068 ret = ff_get_buffer(avctx, frame, AV_GET_BUFFER_FLAG_REF);
1070 av_frame_free(&tmp);
1074 av_frame_copy(frame, tmp);
1075 av_frame_free(&tmp);
1080 int ff_reget_buffer(AVCodecContext *avctx, AVFrame *frame)
1082 int ret = reget_buffer_internal(avctx, frame);
1084 av_log(avctx, AV_LOG_ERROR, "reget_buffer() failed\n");
1088 #if FF_API_GET_BUFFER
1089 void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic)
1091 av_assert0(s->codec_type == AVMEDIA_TYPE_VIDEO);
1093 av_frame_unref(pic);
1096 int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic)
1103 int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2), void *arg, int *ret, int count, int size)
1107 for (i = 0; i < count; i++) {
1108 int r = func(c, (char *)arg + i * size);
1115 int avcodec_default_execute2(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2, int jobnr, int threadnr), void *arg, int *ret, int count)
1119 for (i = 0; i < count; i++) {
1120 int r = func(c, arg, i, 0);
1127 enum AVPixelFormat avpriv_find_pix_fmt(const PixelFormatTag *tags,
1128 unsigned int fourcc)
1130 while (tags->pix_fmt >= 0) {
1131 if (tags->fourcc == fourcc)
1132 return tags->pix_fmt;
1135 return AV_PIX_FMT_NONE;
1138 static int is_hwaccel_pix_fmt(enum AVPixelFormat pix_fmt)
1140 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
1141 return desc->flags & AV_PIX_FMT_FLAG_HWACCEL;
1144 enum AVPixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum AVPixelFormat *fmt)
1146 while (*fmt != AV_PIX_FMT_NONE && is_hwaccel_pix_fmt(*fmt))
1151 static AVHWAccel *find_hwaccel(enum AVCodecID codec_id,
1152 enum AVPixelFormat pix_fmt)
1154 AVHWAccel *hwaccel = NULL;
1156 while ((hwaccel = av_hwaccel_next(hwaccel)))
1157 if (hwaccel->id == codec_id
1158 && hwaccel->pix_fmt == pix_fmt)
1164 int ff_get_format(AVCodecContext *avctx, const enum AVPixelFormat *fmt)
1166 const AVPixFmtDescriptor *desc;
1167 enum AVPixelFormat ret = avctx->get_format(avctx, fmt);
1169 desc = av_pix_fmt_desc_get(ret);
1171 return AV_PIX_FMT_NONE;
1173 if (avctx->hwaccel && avctx->hwaccel->uninit)
1174 avctx->hwaccel->uninit(avctx);
1175 av_freep(&avctx->internal->hwaccel_priv_data);
1176 avctx->hwaccel = NULL;
1178 if (desc->flags & AV_PIX_FMT_FLAG_HWACCEL &&
1179 !(avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU)) {
1183 hwaccel = find_hwaccel(avctx->codec_id, ret);
1185 av_log(avctx, AV_LOG_ERROR,
1186 "Could not find an AVHWAccel for the pixel format: %s",
1188 return AV_PIX_FMT_NONE;
1191 if (hwaccel->priv_data_size) {
1192 avctx->internal->hwaccel_priv_data = av_mallocz(hwaccel->priv_data_size);
1193 if (!avctx->internal->hwaccel_priv_data)
1194 return AV_PIX_FMT_NONE;
1197 if (hwaccel->init) {
1198 err = hwaccel->init(avctx);
1200 av_freep(&avctx->internal->hwaccel_priv_data);
1201 return AV_PIX_FMT_NONE;
1204 avctx->hwaccel = hwaccel;
1210 #if FF_API_AVFRAME_LAVC
1211 void avcodec_get_frame_defaults(AVFrame *frame)
1213 #if LIBAVCODEC_VERSION_MAJOR >= 55
1214 // extended_data should explicitly be freed when needed, this code is unsafe currently
1215 // also this is not compatible to the <55 ABI/API
1216 if (frame->extended_data != frame->data && 0)
1217 av_freep(&frame->extended_data);
1220 memset(frame, 0, sizeof(AVFrame));
1221 av_frame_unref(frame);
1224 AVFrame *avcodec_alloc_frame(void)
1226 return av_frame_alloc();
1229 void avcodec_free_frame(AVFrame **frame)
1231 av_frame_free(frame);
1235 MAKE_ACCESSORS(AVCodecContext, codec, AVRational, pkt_timebase)
1236 MAKE_ACCESSORS(AVCodecContext, codec, const AVCodecDescriptor *, codec_descriptor)
1237 MAKE_ACCESSORS(AVCodecContext, codec, int, lowres)
1238 MAKE_ACCESSORS(AVCodecContext, codec, int, seek_preroll)
1239 MAKE_ACCESSORS(AVCodecContext, codec, uint16_t*, chroma_intra_matrix)
1241 int av_codec_get_max_lowres(const AVCodec *codec)
1243 return codec->max_lowres;
1246 static void avcodec_get_subtitle_defaults(AVSubtitle *sub)
1248 memset(sub, 0, sizeof(*sub));
1249 sub->pts = AV_NOPTS_VALUE;
1252 static int get_bit_rate(AVCodecContext *ctx)
1255 int bits_per_sample;
1257 switch (ctx->codec_type) {
1258 case AVMEDIA_TYPE_VIDEO:
1259 case AVMEDIA_TYPE_DATA:
1260 case AVMEDIA_TYPE_SUBTITLE:
1261 case AVMEDIA_TYPE_ATTACHMENT:
1262 bit_rate = ctx->bit_rate;
1264 case AVMEDIA_TYPE_AUDIO:
1265 bits_per_sample = av_get_bits_per_sample(ctx->codec_id);
1266 bit_rate = bits_per_sample ? ctx->sample_rate * ctx->channels * bits_per_sample : ctx->bit_rate;
1275 int attribute_align_arg ff_codec_open2_recursive(AVCodecContext *avctx, const AVCodec *codec, AVDictionary **options)
1279 ff_unlock_avcodec();
1281 ret = avcodec_open2(avctx, codec, options);
1283 ff_lock_avcodec(avctx);
1287 int attribute_align_arg avcodec_open2(AVCodecContext *avctx, const AVCodec *codec, AVDictionary **options)
1290 AVDictionary *tmp = NULL;
1292 if (avcodec_is_open(avctx))
1295 if ((!codec && !avctx->codec)) {
1296 av_log(avctx, AV_LOG_ERROR, "No codec provided to avcodec_open2()\n");
1297 return AVERROR(EINVAL);
1299 if ((codec && avctx->codec && codec != avctx->codec)) {
1300 av_log(avctx, AV_LOG_ERROR, "This AVCodecContext was allocated for %s, "
1301 "but %s passed to avcodec_open2()\n", avctx->codec->name, codec->name);
1302 return AVERROR(EINVAL);
1305 codec = avctx->codec;
1307 if (avctx->extradata_size < 0 || avctx->extradata_size >= FF_MAX_EXTRADATA_SIZE)
1308 return AVERROR(EINVAL);
1311 av_dict_copy(&tmp, *options, 0);
1313 ret = ff_lock_avcodec(avctx);
1317 avctx->internal = av_mallocz(sizeof(AVCodecInternal));
1318 if (!avctx->internal) {
1319 ret = AVERROR(ENOMEM);
1323 avctx->internal->pool = av_mallocz(sizeof(*avctx->internal->pool));
1324 if (!avctx->internal->pool) {
1325 ret = AVERROR(ENOMEM);
1329 avctx->internal->to_free = av_frame_alloc();
1330 if (!avctx->internal->to_free) {
1331 ret = AVERROR(ENOMEM);
1335 if (codec->priv_data_size > 0) {
1336 if (!avctx->priv_data) {
1337 avctx->priv_data = av_mallocz(codec->priv_data_size);
1338 if (!avctx->priv_data) {
1339 ret = AVERROR(ENOMEM);
1342 if (codec->priv_class) {
1343 *(const AVClass **)avctx->priv_data = codec->priv_class;
1344 av_opt_set_defaults(avctx->priv_data);
1347 if (codec->priv_class && (ret = av_opt_set_dict(avctx->priv_data, &tmp)) < 0)
1350 avctx->priv_data = NULL;
1352 if ((ret = av_opt_set_dict(avctx, &tmp)) < 0)
1355 // only call ff_set_dimensions() for non H.264/VP6F codecs so as not to overwrite previously setup dimensions
1356 if (!(avctx->coded_width && avctx->coded_height && avctx->width && avctx->height &&
1357 (avctx->codec_id == AV_CODEC_ID_H264 || avctx->codec_id == AV_CODEC_ID_VP6F))) {
1358 if (avctx->coded_width && avctx->coded_height)
1359 ret = ff_set_dimensions(avctx, avctx->coded_width, avctx->coded_height);
1360 else if (avctx->width && avctx->height)
1361 ret = ff_set_dimensions(avctx, avctx->width, avctx->height);
1366 if ((avctx->coded_width || avctx->coded_height || avctx->width || avctx->height)
1367 && ( av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx) < 0
1368 || av_image_check_size(avctx->width, avctx->height, 0, avctx) < 0)) {
1369 av_log(avctx, AV_LOG_WARNING, "Ignoring invalid width/height values\n");
1370 ff_set_dimensions(avctx, 0, 0);
1373 if (avctx->width > 0 && avctx->height > 0) {
1374 if (av_image_check_sar(avctx->width, avctx->height,
1375 avctx->sample_aspect_ratio) < 0) {
1376 av_log(avctx, AV_LOG_WARNING, "ignoring invalid SAR: %u/%u\n",
1377 avctx->sample_aspect_ratio.num,
1378 avctx->sample_aspect_ratio.den);
1379 avctx->sample_aspect_ratio = (AVRational){ 0, 1 };
1383 /* if the decoder init function was already called previously,
1384 * free the already allocated subtitle_header before overwriting it */
1385 if (av_codec_is_decoder(codec))
1386 av_freep(&avctx->subtitle_header);
1388 if (avctx->channels > FF_SANE_NB_CHANNELS) {
1389 ret = AVERROR(EINVAL);
1393 avctx->codec = codec;
1394 if ((avctx->codec_type == AVMEDIA_TYPE_UNKNOWN || avctx->codec_type == codec->type) &&
1395 avctx->codec_id == AV_CODEC_ID_NONE) {
1396 avctx->codec_type = codec->type;
1397 avctx->codec_id = codec->id;
1399 if (avctx->codec_id != codec->id || (avctx->codec_type != codec->type
1400 && avctx->codec_type != AVMEDIA_TYPE_ATTACHMENT)) {
1401 av_log(avctx, AV_LOG_ERROR, "Codec type or id mismatches\n");
1402 ret = AVERROR(EINVAL);
1405 avctx->frame_number = 0;
1406 avctx->codec_descriptor = avcodec_descriptor_get(avctx->codec_id);
1408 if (avctx->codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
1409 avctx->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
1410 const char *codec_string = av_codec_is_encoder(codec) ? "encoder" : "decoder";
1412 av_log(avctx, AV_LOG_ERROR,
1413 "The %s '%s' is experimental but experimental codecs are not enabled, "
1414 "add '-strict %d' if you want to use it.\n",
1415 codec_string, codec->name, FF_COMPLIANCE_EXPERIMENTAL);
1416 codec2 = av_codec_is_encoder(codec) ? avcodec_find_encoder(codec->id) : avcodec_find_decoder(codec->id);
1417 if (!(codec2->capabilities & CODEC_CAP_EXPERIMENTAL))
1418 av_log(avctx, AV_LOG_ERROR, "Alternatively use the non experimental %s '%s'.\n",
1419 codec_string, codec2->name);
1420 ret = AVERROR_EXPERIMENTAL;
1424 if (avctx->codec_type == AVMEDIA_TYPE_AUDIO &&
1425 (!avctx->time_base.num || !avctx->time_base.den)) {
1426 avctx->time_base.num = 1;
1427 avctx->time_base.den = avctx->sample_rate;
1431 av_log(avctx, AV_LOG_WARNING, "Warning: not compiled with thread support, using thread emulation\n");
1433 if (CONFIG_FRAME_THREAD_ENCODER) {
1434 ff_unlock_avcodec(); //we will instanciate a few encoders thus kick the counter to prevent false detection of a problem
1435 ret = ff_frame_thread_encoder_init(avctx, options ? *options : NULL);
1436 ff_lock_avcodec(avctx);
1442 && !(avctx->internal->frame_thread_encoder && (avctx->active_thread_type&FF_THREAD_FRAME))) {
1443 ret = ff_thread_init(avctx);
1448 if (!HAVE_THREADS && !(codec->capabilities & CODEC_CAP_AUTO_THREADS))
1449 avctx->thread_count = 1;
1451 if (avctx->codec->max_lowres < avctx->lowres || avctx->lowres < 0) {
1452 av_log(avctx, AV_LOG_ERROR, "The maximum value for lowres supported by the decoder is %d\n",
1453 avctx->codec->max_lowres);
1454 ret = AVERROR(EINVAL);
1458 if (av_codec_is_encoder(avctx->codec)) {
1460 if (avctx->codec->sample_fmts) {
1461 for (i = 0; avctx->codec->sample_fmts[i] != AV_SAMPLE_FMT_NONE; i++) {
1462 if (avctx->sample_fmt == avctx->codec->sample_fmts[i])
1464 if (avctx->channels == 1 &&
1465 av_get_planar_sample_fmt(avctx->sample_fmt) ==
1466 av_get_planar_sample_fmt(avctx->codec->sample_fmts[i])) {
1467 avctx->sample_fmt = avctx->codec->sample_fmts[i];
1471 if (avctx->codec->sample_fmts[i] == AV_SAMPLE_FMT_NONE) {
1473 snprintf(buf, sizeof(buf), "%d", avctx->sample_fmt);
1474 av_log(avctx, AV_LOG_ERROR, "Specified sample format %s is invalid or not supported\n",
1475 (char *)av_x_if_null(av_get_sample_fmt_name(avctx->sample_fmt), buf));
1476 ret = AVERROR(EINVAL);
1480 if (avctx->codec->pix_fmts) {
1481 for (i = 0; avctx->codec->pix_fmts[i] != AV_PIX_FMT_NONE; i++)
1482 if (avctx->pix_fmt == avctx->codec->pix_fmts[i])
1484 if (avctx->codec->pix_fmts[i] == AV_PIX_FMT_NONE
1485 && !((avctx->codec_id == AV_CODEC_ID_MJPEG || avctx->codec_id == AV_CODEC_ID_LJPEG)
1486 && avctx->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL)) {
1488 snprintf(buf, sizeof(buf), "%d", avctx->pix_fmt);
1489 av_log(avctx, AV_LOG_ERROR, "Specified pixel format %s is invalid or not supported\n",
1490 (char *)av_x_if_null(av_get_pix_fmt_name(avctx->pix_fmt), buf));
1491 ret = AVERROR(EINVAL);
1495 if (avctx->codec->supported_samplerates) {
1496 for (i = 0; avctx->codec->supported_samplerates[i] != 0; i++)
1497 if (avctx->sample_rate == avctx->codec->supported_samplerates[i])
1499 if (avctx->codec->supported_samplerates[i] == 0) {
1500 av_log(avctx, AV_LOG_ERROR, "Specified sample rate %d is not supported\n",
1501 avctx->sample_rate);
1502 ret = AVERROR(EINVAL);
1506 if (avctx->codec->channel_layouts) {
1507 if (!avctx->channel_layout) {
1508 av_log(avctx, AV_LOG_WARNING, "Channel layout not specified\n");
1510 for (i = 0; avctx->codec->channel_layouts[i] != 0; i++)
1511 if (avctx->channel_layout == avctx->codec->channel_layouts[i])
1513 if (avctx->codec->channel_layouts[i] == 0) {
1515 av_get_channel_layout_string(buf, sizeof(buf), -1, avctx->channel_layout);
1516 av_log(avctx, AV_LOG_ERROR, "Specified channel layout '%s' is not supported\n", buf);
1517 ret = AVERROR(EINVAL);
1522 if (avctx->channel_layout && avctx->channels) {
1523 int channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
1524 if (channels != avctx->channels) {
1526 av_get_channel_layout_string(buf, sizeof(buf), -1, avctx->channel_layout);
1527 av_log(avctx, AV_LOG_ERROR,
1528 "Channel layout '%s' with %d channels does not match number of specified channels %d\n",
1529 buf, channels, avctx->channels);
1530 ret = AVERROR(EINVAL);
1533 } else if (avctx->channel_layout) {
1534 avctx->channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
1536 if(avctx->codec_type == AVMEDIA_TYPE_VIDEO &&
1537 avctx->codec_id != AV_CODEC_ID_PNG // For mplayer
1539 if (avctx->width <= 0 || avctx->height <= 0) {
1540 av_log(avctx, AV_LOG_ERROR, "dimensions not set\n");
1541 ret = AVERROR(EINVAL);
1545 if ( (avctx->codec_type == AVMEDIA_TYPE_VIDEO || avctx->codec_type == AVMEDIA_TYPE_AUDIO)
1546 && avctx->bit_rate>0 && avctx->bit_rate<1000) {
1547 av_log(avctx, AV_LOG_WARNING, "Bitrate %d is extremely low, maybe you mean %dk\n", avctx->bit_rate, avctx->bit_rate);
1550 if (!avctx->rc_initial_buffer_occupancy)
1551 avctx->rc_initial_buffer_occupancy = avctx->rc_buffer_size * 3 / 4;
1554 avctx->pts_correction_num_faulty_pts =
1555 avctx->pts_correction_num_faulty_dts = 0;
1556 avctx->pts_correction_last_pts =
1557 avctx->pts_correction_last_dts = INT64_MIN;
1559 if ( avctx->codec->init && (!(avctx->active_thread_type&FF_THREAD_FRAME)
1560 || avctx->internal->frame_thread_encoder)) {
1561 ret = avctx->codec->init(avctx);
1569 if (av_codec_is_decoder(avctx->codec)) {
1570 if (!avctx->bit_rate)
1571 avctx->bit_rate = get_bit_rate(avctx);
1572 /* validate channel layout from the decoder */
1573 if (avctx->channel_layout) {
1574 int channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
1575 if (!avctx->channels)
1576 avctx->channels = channels;
1577 else if (channels != avctx->channels) {
1579 av_get_channel_layout_string(buf, sizeof(buf), -1, avctx->channel_layout);
1580 av_log(avctx, AV_LOG_WARNING,
1581 "Channel layout '%s' with %d channels does not match specified number of channels %d: "
1582 "ignoring specified channel layout\n",
1583 buf, channels, avctx->channels);
1584 avctx->channel_layout = 0;
1587 if (avctx->channels && avctx->channels < 0 ||
1588 avctx->channels > FF_SANE_NB_CHANNELS) {
1589 ret = AVERROR(EINVAL);
1592 if (avctx->sub_charenc) {
1593 if (avctx->codec_type != AVMEDIA_TYPE_SUBTITLE) {
1594 av_log(avctx, AV_LOG_ERROR, "Character encoding is only "
1595 "supported with subtitles codecs\n");
1596 ret = AVERROR(EINVAL);
1598 } else if (avctx->codec_descriptor->props & AV_CODEC_PROP_BITMAP_SUB) {
1599 av_log(avctx, AV_LOG_WARNING, "Codec '%s' is bitmap-based, "
1600 "subtitles character encoding will be ignored\n",
1601 avctx->codec_descriptor->name);
1602 avctx->sub_charenc_mode = FF_SUB_CHARENC_MODE_DO_NOTHING;
1604 /* input character encoding is set for a text based subtitle
1605 * codec at this point */
1606 if (avctx->sub_charenc_mode == FF_SUB_CHARENC_MODE_AUTOMATIC)
1607 avctx->sub_charenc_mode = FF_SUB_CHARENC_MODE_PRE_DECODER;
1609 if (avctx->sub_charenc_mode == FF_SUB_CHARENC_MODE_PRE_DECODER) {
1611 iconv_t cd = iconv_open("UTF-8", avctx->sub_charenc);
1612 if (cd == (iconv_t)-1) {
1613 av_log(avctx, AV_LOG_ERROR, "Unable to open iconv context "
1614 "with input character encoding \"%s\"\n", avctx->sub_charenc);
1615 ret = AVERROR(errno);
1620 av_log(avctx, AV_LOG_ERROR, "Character encoding subtitles "
1621 "conversion needs a libavcodec built with iconv support "
1622 "for this codec\n");
1623 ret = AVERROR(ENOSYS);
1631 ff_unlock_avcodec();
1633 av_dict_free(options);
1640 av_freep(&avctx->priv_data);
1641 if (avctx->internal) {
1642 av_frame_free(&avctx->internal->to_free);
1643 av_freep(&avctx->internal->pool);
1645 av_freep(&avctx->internal);
1646 avctx->codec = NULL;
1650 int ff_alloc_packet2(AVCodecContext *avctx, AVPacket *avpkt, int64_t size)
1652 if (avpkt->size < 0) {
1653 av_log(avctx, AV_LOG_ERROR, "Invalid negative user packet size %d\n", avpkt->size);
1654 return AVERROR(EINVAL);
1656 if (size < 0 || size > INT_MAX - FF_INPUT_BUFFER_PADDING_SIZE) {
1657 av_log(avctx, AV_LOG_ERROR, "Invalid minimum required packet size %"PRId64" (max allowed is %d)\n",
1658 size, INT_MAX - FF_INPUT_BUFFER_PADDING_SIZE);
1659 return AVERROR(EINVAL);
1663 av_assert0(!avpkt->data || avpkt->data != avctx->internal->byte_buffer);
1664 if (!avpkt->data || avpkt->size < size) {
1665 av_fast_padded_malloc(&avctx->internal->byte_buffer, &avctx->internal->byte_buffer_size, size);
1666 avpkt->data = avctx->internal->byte_buffer;
1667 avpkt->size = avctx->internal->byte_buffer_size;
1668 #if FF_API_DESTRUCT_PACKET
1669 FF_DISABLE_DEPRECATION_WARNINGS
1670 avpkt->destruct = NULL;
1671 FF_ENABLE_DEPRECATION_WARNINGS
1677 AVBufferRef *buf = avpkt->buf;
1678 #if FF_API_DESTRUCT_PACKET
1679 FF_DISABLE_DEPRECATION_WARNINGS
1680 void *destruct = avpkt->destruct;
1681 FF_ENABLE_DEPRECATION_WARNINGS
1684 if (avpkt->size < size) {
1685 av_log(avctx, AV_LOG_ERROR, "User packet is too small (%d < %"PRId64")\n", avpkt->size, size);
1686 return AVERROR(EINVAL);
1689 av_init_packet(avpkt);
1690 #if FF_API_DESTRUCT_PACKET
1691 FF_DISABLE_DEPRECATION_WARNINGS
1692 avpkt->destruct = destruct;
1693 FF_ENABLE_DEPRECATION_WARNINGS
1699 int ret = av_new_packet(avpkt, size);
1701 av_log(avctx, AV_LOG_ERROR, "Failed to allocate packet of size %"PRId64"\n", size);
1706 int ff_alloc_packet(AVPacket *avpkt, int size)
1708 return ff_alloc_packet2(NULL, avpkt, size);
1712 * Pad last frame with silence.
1714 static int pad_last_frame(AVCodecContext *s, AVFrame **dst, const AVFrame *src)
1716 AVFrame *frame = NULL;
1719 if (!(frame = av_frame_alloc()))
1720 return AVERROR(ENOMEM);
1722 frame->format = src->format;
1723 frame->channel_layout = src->channel_layout;
1724 av_frame_set_channels(frame, av_frame_get_channels(src));
1725 frame->nb_samples = s->frame_size;
1726 ret = av_frame_get_buffer(frame, 32);
1730 ret = av_frame_copy_props(frame, src);
1734 if ((ret = av_samples_copy(frame->extended_data, src->extended_data, 0, 0,
1735 src->nb_samples, s->channels, s->sample_fmt)) < 0)
1737 if ((ret = av_samples_set_silence(frame->extended_data, src->nb_samples,
1738 frame->nb_samples - src->nb_samples,
1739 s->channels, s->sample_fmt)) < 0)
1747 av_frame_free(&frame);
1751 int attribute_align_arg avcodec_encode_audio2(AVCodecContext *avctx,
1753 const AVFrame *frame,
1754 int *got_packet_ptr)
1756 AVFrame *extended_frame = NULL;
1757 AVFrame *padded_frame = NULL;
1759 AVPacket user_pkt = *avpkt;
1760 int needs_realloc = !user_pkt.data;
1762 *got_packet_ptr = 0;
1764 if (!(avctx->codec->capabilities & CODEC_CAP_DELAY) && !frame) {
1765 av_free_packet(avpkt);
1766 av_init_packet(avpkt);
1770 /* ensure that extended_data is properly set */
1771 if (frame && !frame->extended_data) {
1772 if (av_sample_fmt_is_planar(avctx->sample_fmt) &&
1773 avctx->channels > AV_NUM_DATA_POINTERS) {
1774 av_log(avctx, AV_LOG_ERROR, "Encoding to a planar sample format, "
1775 "with more than %d channels, but extended_data is not set.\n",
1776 AV_NUM_DATA_POINTERS);
1777 return AVERROR(EINVAL);
1779 av_log(avctx, AV_LOG_WARNING, "extended_data is not set.\n");
1781 extended_frame = av_frame_alloc();
1782 if (!extended_frame)
1783 return AVERROR(ENOMEM);
1785 memcpy(extended_frame, frame, sizeof(AVFrame));
1786 extended_frame->extended_data = extended_frame->data;
1787 frame = extended_frame;
1790 /* check for valid frame size */
1792 if (avctx->codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME) {
1793 if (frame->nb_samples > avctx->frame_size) {
1794 av_log(avctx, AV_LOG_ERROR, "more samples than frame size (avcodec_encode_audio2)\n");
1795 ret = AVERROR(EINVAL);
1798 } else if (!(avctx->codec->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE)) {
1799 if (frame->nb_samples < avctx->frame_size &&
1800 !avctx->internal->last_audio_frame) {
1801 ret = pad_last_frame(avctx, &padded_frame, frame);
1805 frame = padded_frame;
1806 avctx->internal->last_audio_frame = 1;
1809 if (frame->nb_samples != avctx->frame_size) {
1810 av_log(avctx, AV_LOG_ERROR, "nb_samples (%d) != frame_size (%d) (avcodec_encode_audio2)\n", frame->nb_samples, avctx->frame_size);
1811 ret = AVERROR(EINVAL);
1817 ret = avctx->codec->encode2(avctx, avpkt, frame, got_packet_ptr);
1819 if (*got_packet_ptr) {
1820 if (!(avctx->codec->capabilities & CODEC_CAP_DELAY)) {
1821 if (avpkt->pts == AV_NOPTS_VALUE)
1822 avpkt->pts = frame->pts;
1823 if (!avpkt->duration)
1824 avpkt->duration = ff_samples_to_time_base(avctx,
1827 avpkt->dts = avpkt->pts;
1832 if (avpkt->data && avpkt->data == avctx->internal->byte_buffer) {
1834 if (user_pkt.data) {
1835 if (user_pkt.size >= avpkt->size) {
1836 memcpy(user_pkt.data, avpkt->data, avpkt->size);
1838 av_log(avctx, AV_LOG_ERROR, "Provided packet is too small, needs to be %d\n", avpkt->size);
1839 avpkt->size = user_pkt.size;
1842 avpkt->buf = user_pkt.buf;
1843 avpkt->data = user_pkt.data;
1844 #if FF_API_DESTRUCT_PACKET
1845 FF_DISABLE_DEPRECATION_WARNINGS
1846 avpkt->destruct = user_pkt.destruct;
1847 FF_ENABLE_DEPRECATION_WARNINGS
1850 if (av_dup_packet(avpkt) < 0) {
1851 ret = AVERROR(ENOMEM);
1857 if (needs_realloc && avpkt->data) {
1858 ret = av_buffer_realloc(&avpkt->buf, avpkt->size + FF_INPUT_BUFFER_PADDING_SIZE);
1860 avpkt->data = avpkt->buf->data;
1863 avctx->frame_number++;
1866 if (ret < 0 || !*got_packet_ptr) {
1867 av_free_packet(avpkt);
1868 av_init_packet(avpkt);
1872 /* NOTE: if we add any audio encoders which output non-keyframe packets,
1873 * this needs to be moved to the encoders, but for now we can do it
1874 * here to simplify things */
1875 avpkt->flags |= AV_PKT_FLAG_KEY;
1878 av_frame_free(&padded_frame);
1879 av_free(extended_frame);
1884 #if FF_API_OLD_ENCODE_AUDIO
1885 int attribute_align_arg avcodec_encode_audio(AVCodecContext *avctx,
1886 uint8_t *buf, int buf_size,
1887 const short *samples)
1891 int ret, samples_size, got_packet;
1893 av_init_packet(&pkt);
1895 pkt.size = buf_size;
1898 frame = av_frame_alloc();
1900 return AVERROR(ENOMEM);
1902 if (avctx->frame_size) {
1903 frame->nb_samples = avctx->frame_size;
1905 /* if frame_size is not set, the number of samples must be
1906 * calculated from the buffer size */
1908 if (!av_get_bits_per_sample(avctx->codec_id)) {
1909 av_log(avctx, AV_LOG_ERROR, "avcodec_encode_audio() does not "
1910 "support this codec\n");
1911 av_frame_free(&frame);
1912 return AVERROR(EINVAL);
1914 nb_samples = (int64_t)buf_size * 8 /
1915 (av_get_bits_per_sample(avctx->codec_id) *
1917 if (nb_samples >= INT_MAX) {
1918 av_frame_free(&frame);
1919 return AVERROR(EINVAL);
1921 frame->nb_samples = nb_samples;
1924 /* it is assumed that the samples buffer is large enough based on the
1925 * relevant parameters */
1926 samples_size = av_samples_get_buffer_size(NULL, avctx->channels,
1928 avctx->sample_fmt, 1);
1929 if ((ret = avcodec_fill_audio_frame(frame, avctx->channels,
1931 (const uint8_t *)samples,
1932 samples_size, 1)) < 0) {
1933 av_frame_free(&frame);
1937 /* fabricate frame pts from sample count.
1938 * this is needed because the avcodec_encode_audio() API does not have
1939 * a way for the user to provide pts */
1940 if (avctx->sample_rate && avctx->time_base.num)
1941 frame->pts = ff_samples_to_time_base(avctx,
1942 avctx->internal->sample_count);
1944 frame->pts = AV_NOPTS_VALUE;
1945 avctx->internal->sample_count += frame->nb_samples;
1951 ret = avcodec_encode_audio2(avctx, &pkt, frame, &got_packet);
1952 if (!ret && got_packet && avctx->coded_frame) {
1953 avctx->coded_frame->pts = pkt.pts;
1954 avctx->coded_frame->key_frame = !!(pkt.flags & AV_PKT_FLAG_KEY);
1956 /* free any side data since we cannot return it */
1957 av_packet_free_side_data(&pkt);
1959 if (frame && frame->extended_data != frame->data)
1960 av_freep(&frame->extended_data);
1962 av_frame_free(&frame);
1963 return ret ? ret : pkt.size;
1968 #if FF_API_OLD_ENCODE_VIDEO
1969 int attribute_align_arg avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
1970 const AVFrame *pict)
1973 int ret, got_packet = 0;
1975 if (buf_size < FF_MIN_BUFFER_SIZE) {
1976 av_log(avctx, AV_LOG_ERROR, "buffer smaller than minimum size\n");
1980 av_init_packet(&pkt);
1982 pkt.size = buf_size;
1984 ret = avcodec_encode_video2(avctx, &pkt, pict, &got_packet);
1985 if (!ret && got_packet && avctx->coded_frame) {
1986 avctx->coded_frame->pts = pkt.pts;
1987 avctx->coded_frame->key_frame = !!(pkt.flags & AV_PKT_FLAG_KEY);
1990 /* free any side data since we cannot return it */
1991 if (pkt.side_data_elems > 0) {
1993 for (i = 0; i < pkt.side_data_elems; i++)
1994 av_free(pkt.side_data[i].data);
1995 av_freep(&pkt.side_data);
1996 pkt.side_data_elems = 0;
1999 return ret ? ret : pkt.size;
2004 int attribute_align_arg avcodec_encode_video2(AVCodecContext *avctx,
2006 const AVFrame *frame,
2007 int *got_packet_ptr)
2010 AVPacket user_pkt = *avpkt;
2011 int needs_realloc = !user_pkt.data;
2013 *got_packet_ptr = 0;
2015 if(CONFIG_FRAME_THREAD_ENCODER &&
2016 avctx->internal->frame_thread_encoder && (avctx->active_thread_type&FF_THREAD_FRAME))
2017 return ff_thread_video_encode_frame(avctx, avpkt, frame, got_packet_ptr);
2019 if ((avctx->flags&CODEC_FLAG_PASS1) && avctx->stats_out)
2020 avctx->stats_out[0] = '\0';
2022 if (!(avctx->codec->capabilities & CODEC_CAP_DELAY) && !frame) {
2023 av_free_packet(avpkt);
2024 av_init_packet(avpkt);
2029 if (av_image_check_size(avctx->width, avctx->height, 0, avctx))
2030 return AVERROR(EINVAL);
2032 av_assert0(avctx->codec->encode2);
2034 ret = avctx->codec->encode2(avctx, avpkt, frame, got_packet_ptr);
2035 av_assert0(ret <= 0);
2037 if (avpkt->data && avpkt->data == avctx->internal->byte_buffer) {
2039 if (user_pkt.data) {
2040 if (user_pkt.size >= avpkt->size) {
2041 memcpy(user_pkt.data, avpkt->data, avpkt->size);
2043 av_log(avctx, AV_LOG_ERROR, "Provided packet is too small, needs to be %d\n", avpkt->size);
2044 avpkt->size = user_pkt.size;
2047 avpkt->buf = user_pkt.buf;
2048 avpkt->data = user_pkt.data;
2049 #if FF_API_DESTRUCT_PACKET
2050 FF_DISABLE_DEPRECATION_WARNINGS
2051 avpkt->destruct = user_pkt.destruct;
2052 FF_ENABLE_DEPRECATION_WARNINGS
2055 if (av_dup_packet(avpkt) < 0) {
2056 ret = AVERROR(ENOMEM);
2062 if (!*got_packet_ptr)
2064 else if (!(avctx->codec->capabilities & CODEC_CAP_DELAY))
2065 avpkt->pts = avpkt->dts = frame->pts;
2067 if (needs_realloc && avpkt->data) {
2068 ret = av_buffer_realloc(&avpkt->buf, avpkt->size + FF_INPUT_BUFFER_PADDING_SIZE);
2070 avpkt->data = avpkt->buf->data;
2073 avctx->frame_number++;
2076 if (ret < 0 || !*got_packet_ptr)
2077 av_free_packet(avpkt);
2079 av_packet_merge_side_data(avpkt);
2085 int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size,
2086 const AVSubtitle *sub)
2089 if (sub->start_display_time) {
2090 av_log(avctx, AV_LOG_ERROR, "start_display_time must be 0.\n");
2094 ret = avctx->codec->encode_sub(avctx, buf, buf_size, sub);
2095 avctx->frame_number++;
2100 * Attempt to guess proper monotonic timestamps for decoded video frames
2101 * which might have incorrect times. Input timestamps may wrap around, in
2102 * which case the output will as well.
2104 * @param pts the pts field of the decoded AVPacket, as passed through
2106 * @param dts the dts field of the decoded AVPacket
2107 * @return one of the input values, may be AV_NOPTS_VALUE
2109 static int64_t guess_correct_pts(AVCodecContext *ctx,
2110 int64_t reordered_pts, int64_t dts)
2112 int64_t pts = AV_NOPTS_VALUE;
2114 if (dts != AV_NOPTS_VALUE) {
2115 ctx->pts_correction_num_faulty_dts += dts <= ctx->pts_correction_last_dts;
2116 ctx->pts_correction_last_dts = dts;
2117 } else if (reordered_pts != AV_NOPTS_VALUE)
2118 ctx->pts_correction_last_dts = reordered_pts;
2120 if (reordered_pts != AV_NOPTS_VALUE) {
2121 ctx->pts_correction_num_faulty_pts += reordered_pts <= ctx->pts_correction_last_pts;
2122 ctx->pts_correction_last_pts = reordered_pts;
2123 } else if(dts != AV_NOPTS_VALUE)
2124 ctx->pts_correction_last_pts = dts;
2126 if ((ctx->pts_correction_num_faulty_pts<=ctx->pts_correction_num_faulty_dts || dts == AV_NOPTS_VALUE)
2127 && reordered_pts != AV_NOPTS_VALUE)
2128 pts = reordered_pts;
2135 static int apply_param_change(AVCodecContext *avctx, AVPacket *avpkt)
2138 const uint8_t *data;
2141 data = av_packet_get_side_data(avpkt, AV_PKT_DATA_PARAM_CHANGE, &size);
2145 if (!(avctx->codec->capabilities & CODEC_CAP_PARAM_CHANGE)) {
2146 av_log(avctx, AV_LOG_ERROR, "This decoder does not support parameter "
2147 "changes, but PARAM_CHANGE side data was sent to it.\n");
2148 return AVERROR(EINVAL);
2154 flags = bytestream_get_le32(&data);
2157 if (flags & AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_COUNT) {
2160 avctx->channels = bytestream_get_le32(&data);
2163 if (flags & AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_LAYOUT) {
2166 avctx->channel_layout = bytestream_get_le64(&data);
2169 if (flags & AV_SIDE_DATA_PARAM_CHANGE_SAMPLE_RATE) {
2172 avctx->sample_rate = bytestream_get_le32(&data);
2175 if (flags & AV_SIDE_DATA_PARAM_CHANGE_DIMENSIONS) {
2178 avctx->width = bytestream_get_le32(&data);
2179 avctx->height = bytestream_get_le32(&data);
2181 ret = ff_set_dimensions(avctx, avctx->width, avctx->height);
2188 av_log(avctx, AV_LOG_ERROR, "PARAM_CHANGE side data too small.\n");
2189 return AVERROR_INVALIDDATA;
2192 static int add_metadata_from_side_data(AVCodecContext *avctx, AVFrame *frame)
2195 const uint8_t *side_metadata;
2197 AVDictionary **frame_md = avpriv_frame_get_metadatap(frame);
2199 side_metadata = av_packet_get_side_data(avctx->internal->pkt,
2200 AV_PKT_DATA_STRINGS_METADATA, &size);
2201 return av_packet_unpack_dictionary(side_metadata, size, frame_md);
2204 static int unrefcount_frame(AVCodecInternal *avci, AVFrame *frame)
2208 /* move the original frame to our backup */
2209 av_frame_unref(avci->to_free);
2210 av_frame_move_ref(avci->to_free, frame);
2212 /* now copy everything except the AVBufferRefs back
2213 * note that we make a COPY of the side data, so calling av_frame_free() on
2214 * the caller's frame will work properly */
2215 ret = av_frame_copy_props(frame, avci->to_free);
2219 memcpy(frame->data, avci->to_free->data, sizeof(frame->data));
2220 memcpy(frame->linesize, avci->to_free->linesize, sizeof(frame->linesize));
2221 if (avci->to_free->extended_data != avci->to_free->data) {
2222 int planes = av_frame_get_channels(avci->to_free);
2223 int size = planes * sizeof(*frame->extended_data);
2226 av_frame_unref(frame);
2230 frame->extended_data = av_malloc(size);
2231 if (!frame->extended_data) {
2232 av_frame_unref(frame);
2233 return AVERROR(ENOMEM);
2235 memcpy(frame->extended_data, avci->to_free->extended_data,
2238 frame->extended_data = frame->data;
2240 frame->format = avci->to_free->format;
2241 frame->width = avci->to_free->width;
2242 frame->height = avci->to_free->height;
2243 frame->channel_layout = avci->to_free->channel_layout;
2244 frame->nb_samples = avci->to_free->nb_samples;
2245 av_frame_set_channels(frame, av_frame_get_channels(avci->to_free));
2250 int attribute_align_arg avcodec_decode_video2(AVCodecContext *avctx, AVFrame *picture,
2251 int *got_picture_ptr,
2252 const AVPacket *avpkt)
2254 AVCodecInternal *avci = avctx->internal;
2256 // copy to ensure we do not change avpkt
2257 AVPacket tmp = *avpkt;
2260 return AVERROR(EINVAL);
2261 if (avctx->codec->type != AVMEDIA_TYPE_VIDEO) {
2262 av_log(avctx, AV_LOG_ERROR, "Invalid media type for video\n");
2263 return AVERROR(EINVAL);
2266 *got_picture_ptr = 0;
2267 if ((avctx->coded_width || avctx->coded_height) && av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx))
2268 return AVERROR(EINVAL);
2270 av_frame_unref(picture);
2272 if ((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size || (avctx->active_thread_type & FF_THREAD_FRAME)) {
2273 int did_split = av_packet_split_side_data(&tmp);
2274 ret = apply_param_change(avctx, &tmp);
2276 av_log(avctx, AV_LOG_ERROR, "Error applying parameter changes.\n");
2277 if (avctx->err_recognition & AV_EF_EXPLODE)
2281 avctx->internal->pkt = &tmp;
2282 if (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME)
2283 ret = ff_thread_decode_frame(avctx, picture, got_picture_ptr,
2286 ret = avctx->codec->decode(avctx, picture, got_picture_ptr,
2288 picture->pkt_dts = avpkt->dts;
2290 if(!avctx->has_b_frames){
2291 av_frame_set_pkt_pos(picture, avpkt->pos);
2293 //FIXME these should be under if(!avctx->has_b_frames)
2294 /* get_buffer is supposed to set frame parameters */
2295 if (!(avctx->codec->capabilities & CODEC_CAP_DR1)) {
2296 if (!picture->sample_aspect_ratio.num) picture->sample_aspect_ratio = avctx->sample_aspect_ratio;
2297 if (!picture->width) picture->width = avctx->width;
2298 if (!picture->height) picture->height = avctx->height;
2299 if (picture->format == AV_PIX_FMT_NONE) picture->format = avctx->pix_fmt;
2302 add_metadata_from_side_data(avctx, picture);
2305 emms_c(); //needed to avoid an emms_c() call before every return;
2307 avctx->internal->pkt = NULL;
2309 av_packet_free_side_data(&tmp);
2314 if (*got_picture_ptr) {
2315 if (!avctx->refcounted_frames) {
2316 int err = unrefcount_frame(avci, picture);
2321 avctx->frame_number++;
2322 av_frame_set_best_effort_timestamp(picture,
2323 guess_correct_pts(avctx,
2327 av_frame_unref(picture);
2331 /* many decoders assign whole AVFrames, thus overwriting extended_data;
2332 * make sure it's set correctly */
2333 av_assert0(!picture->extended_data || picture->extended_data == picture->data);
2338 #if FF_API_OLD_DECODE_AUDIO
2339 int attribute_align_arg avcodec_decode_audio3(AVCodecContext *avctx, int16_t *samples,
2340 int *frame_size_ptr,
2343 AVFrame *frame = av_frame_alloc();
2344 int ret, got_frame = 0;
2347 return AVERROR(ENOMEM);
2348 if (avctx->get_buffer != avcodec_default_get_buffer) {
2349 av_log(avctx, AV_LOG_ERROR, "Custom get_buffer() for use with"
2350 "avcodec_decode_audio3() detected. Overriding with avcodec_default_get_buffer\n");
2351 av_log(avctx, AV_LOG_ERROR, "Please port your application to "
2352 "avcodec_decode_audio4()\n");
2353 avctx->get_buffer = avcodec_default_get_buffer;
2354 avctx->release_buffer = avcodec_default_release_buffer;
2357 ret = avcodec_decode_audio4(avctx, frame, &got_frame, avpkt);
2359 if (ret >= 0 && got_frame) {
2361 int planar = av_sample_fmt_is_planar(avctx->sample_fmt);
2362 int data_size = av_samples_get_buffer_size(&plane_size, avctx->channels,
2364 avctx->sample_fmt, 1);
2365 if (*frame_size_ptr < data_size) {
2366 av_log(avctx, AV_LOG_ERROR, "output buffer size is too small for "
2367 "the current frame (%d < %d)\n", *frame_size_ptr, data_size);
2368 av_frame_free(&frame);
2369 return AVERROR(EINVAL);
2372 memcpy(samples, frame->extended_data[0], plane_size);
2374 if (planar && avctx->channels > 1) {
2375 uint8_t *out = ((uint8_t *)samples) + plane_size;
2376 for (ch = 1; ch < avctx->channels; ch++) {
2377 memcpy(out, frame->extended_data[ch], plane_size);
2381 *frame_size_ptr = data_size;
2383 *frame_size_ptr = 0;
2385 av_frame_free(&frame);
2391 int attribute_align_arg avcodec_decode_audio4(AVCodecContext *avctx,
2394 const AVPacket *avpkt)
2396 AVCodecInternal *avci = avctx->internal;
2401 if (!avpkt->data && avpkt->size) {
2402 av_log(avctx, AV_LOG_ERROR, "invalid packet: NULL data, size != 0\n");
2403 return AVERROR(EINVAL);
2406 return AVERROR(EINVAL);
2407 if (avctx->codec->type != AVMEDIA_TYPE_AUDIO) {
2408 av_log(avctx, AV_LOG_ERROR, "Invalid media type for audio\n");
2409 return AVERROR(EINVAL);
2412 av_frame_unref(frame);
2414 if ((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size || (avctx->active_thread_type & FF_THREAD_FRAME)) {
2417 uint32_t discard_padding = 0;
2418 // copy to ensure we do not change avpkt
2419 AVPacket tmp = *avpkt;
2420 int did_split = av_packet_split_side_data(&tmp);
2421 ret = apply_param_change(avctx, &tmp);
2423 av_log(avctx, AV_LOG_ERROR, "Error applying parameter changes.\n");
2424 if (avctx->err_recognition & AV_EF_EXPLODE)
2428 avctx->internal->pkt = &tmp;
2429 if (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME)
2430 ret = ff_thread_decode_frame(avctx, frame, got_frame_ptr, &tmp);
2432 ret = avctx->codec->decode(avctx, frame, got_frame_ptr, &tmp);
2433 frame->pkt_dts = avpkt->dts;
2435 if (ret >= 0 && *got_frame_ptr) {
2436 add_metadata_from_side_data(avctx, frame);
2437 avctx->frame_number++;
2438 av_frame_set_best_effort_timestamp(frame,
2439 guess_correct_pts(avctx,
2442 if (frame->format == AV_SAMPLE_FMT_NONE)
2443 frame->format = avctx->sample_fmt;
2444 if (!frame->channel_layout)
2445 frame->channel_layout = avctx->channel_layout;
2446 if (!av_frame_get_channels(frame))
2447 av_frame_set_channels(frame, avctx->channels);
2448 if (!frame->sample_rate)
2449 frame->sample_rate = avctx->sample_rate;
2452 side= av_packet_get_side_data(avctx->internal->pkt, AV_PKT_DATA_SKIP_SAMPLES, &side_size);
2453 if(side && side_size>=10) {
2454 avctx->internal->skip_samples = AV_RL32(side);
2455 av_log(avctx, AV_LOG_DEBUG, "skip %d samples due to side data\n",
2456 avctx->internal->skip_samples);
2457 discard_padding = AV_RL32(side + 4);
2459 if (avctx->internal->skip_samples && *got_frame_ptr) {
2460 if(frame->nb_samples <= avctx->internal->skip_samples){
2462 avctx->internal->skip_samples -= frame->nb_samples;
2463 av_log(avctx, AV_LOG_DEBUG, "skip whole frame, skip left: %d\n",
2464 avctx->internal->skip_samples);
2466 av_samples_copy(frame->extended_data, frame->extended_data, 0, avctx->internal->skip_samples,
2467 frame->nb_samples - avctx->internal->skip_samples, avctx->channels, frame->format);
2468 if(avctx->pkt_timebase.num && avctx->sample_rate) {
2469 int64_t diff_ts = av_rescale_q(avctx->internal->skip_samples,
2470 (AVRational){1, avctx->sample_rate},
2471 avctx->pkt_timebase);
2472 if(frame->pkt_pts!=AV_NOPTS_VALUE)
2473 frame->pkt_pts += diff_ts;
2474 if(frame->pkt_dts!=AV_NOPTS_VALUE)
2475 frame->pkt_dts += diff_ts;
2476 if (av_frame_get_pkt_duration(frame) >= diff_ts)
2477 av_frame_set_pkt_duration(frame, av_frame_get_pkt_duration(frame) - diff_ts);
2479 av_log(avctx, AV_LOG_WARNING, "Could not update timestamps for skipped samples.\n");
2481 av_log(avctx, AV_LOG_DEBUG, "skip %d/%d samples\n",
2482 avctx->internal->skip_samples, frame->nb_samples);
2483 frame->nb_samples -= avctx->internal->skip_samples;
2484 avctx->internal->skip_samples = 0;
2488 if (discard_padding > 0 && discard_padding <= frame->nb_samples && *got_frame_ptr) {
2489 if (discard_padding == frame->nb_samples) {
2492 if(avctx->pkt_timebase.num && avctx->sample_rate) {
2493 int64_t diff_ts = av_rescale_q(frame->nb_samples - discard_padding,
2494 (AVRational){1, avctx->sample_rate},
2495 avctx->pkt_timebase);
2496 if (av_frame_get_pkt_duration(frame) >= diff_ts)
2497 av_frame_set_pkt_duration(frame, av_frame_get_pkt_duration(frame) - diff_ts);
2499 av_log(avctx, AV_LOG_WARNING, "Could not update timestamps for discarded samples.\n");
2501 av_log(avctx, AV_LOG_DEBUG, "discard %d/%d samples\n",
2502 discard_padding, frame->nb_samples);
2503 frame->nb_samples -= discard_padding;
2507 avctx->internal->pkt = NULL;
2509 av_packet_free_side_data(&tmp);
2514 if (ret >= 0 && *got_frame_ptr) {
2515 if (!avctx->refcounted_frames) {
2516 int err = unrefcount_frame(avci, frame);
2521 av_frame_unref(frame);
2527 #define UTF8_MAX_BYTES 4 /* 5 and 6 bytes sequences should not be used */
2528 static int recode_subtitle(AVCodecContext *avctx,
2529 AVPacket *outpkt, const AVPacket *inpkt)
2532 iconv_t cd = (iconv_t)-1;
2539 if (avctx->sub_charenc_mode != FF_SUB_CHARENC_MODE_PRE_DECODER || inpkt->size == 0)
2543 cd = iconv_open("UTF-8", avctx->sub_charenc);
2544 av_assert0(cd != (iconv_t)-1);
2549 if (inl >= INT_MAX / UTF8_MAX_BYTES - FF_INPUT_BUFFER_PADDING_SIZE) {
2550 av_log(avctx, AV_LOG_ERROR, "Subtitles packet is too big for recoding\n");
2551 ret = AVERROR(ENOMEM);
2555 ret = av_new_packet(&tmp, inl * UTF8_MAX_BYTES);
2558 outpkt->buf = tmp.buf;
2559 outpkt->data = tmp.data;
2560 outpkt->size = tmp.size;
2561 outb = outpkt->data;
2562 outl = outpkt->size;
2564 if (iconv(cd, &inb, &inl, &outb, &outl) == (size_t)-1 ||
2565 iconv(cd, NULL, NULL, &outb, &outl) == (size_t)-1 ||
2566 outl >= outpkt->size || inl != 0) {
2567 av_log(avctx, AV_LOG_ERROR, "Unable to recode subtitle event \"%s\" "
2568 "from %s to UTF-8\n", inpkt->data, avctx->sub_charenc);
2569 av_free_packet(&tmp);
2570 ret = AVERROR(errno);
2573 outpkt->size -= outl;
2574 memset(outpkt->data + outpkt->size, 0, outl);
2577 if (cd != (iconv_t)-1)
2581 av_log(avctx, AV_LOG_ERROR, "requesting subtitles recoding without iconv");
2582 return AVERROR(EINVAL);
2586 static int utf8_check(const uint8_t *str)
2588 const uint8_t *byte;
2589 uint32_t codepoint, min;
2593 GET_UTF8(codepoint, *(byte++), return 0;);
2594 min = byte - str == 1 ? 0 : byte - str == 2 ? 0x80 :
2595 1 << (5 * (byte - str) - 4);
2596 if (codepoint < min || codepoint >= 0x110000 ||
2597 codepoint == 0xFFFE /* BOM */ ||
2598 codepoint >= 0xD800 && codepoint <= 0xDFFF /* surrogates */)
2605 int avcodec_decode_subtitle2(AVCodecContext *avctx, AVSubtitle *sub,
2611 if (!avpkt->data && avpkt->size) {
2612 av_log(avctx, AV_LOG_ERROR, "invalid packet: NULL data, size != 0\n");
2613 return AVERROR(EINVAL);
2616 return AVERROR(EINVAL);
2617 if (avctx->codec->type != AVMEDIA_TYPE_SUBTITLE) {
2618 av_log(avctx, AV_LOG_ERROR, "Invalid media type for subtitles\n");
2619 return AVERROR(EINVAL);
2623 avcodec_get_subtitle_defaults(sub);
2625 if ((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size) {
2626 AVPacket pkt_recoded;
2627 AVPacket tmp = *avpkt;
2628 int did_split = av_packet_split_side_data(&tmp);
2629 //apply_param_change(avctx, &tmp);
2632 /* FFMIN() prevents overflow in case the packet wasn't allocated with
2634 * If the side data is smaller than the buffer padding size, the
2635 * remaining bytes should have already been filled with zeros by the
2636 * original packet allocation anyway. */
2637 memset(tmp.data + tmp.size, 0,
2638 FFMIN(avpkt->size - tmp.size, FF_INPUT_BUFFER_PADDING_SIZE));
2642 ret = recode_subtitle(avctx, &pkt_recoded, &tmp);
2646 avctx->internal->pkt = &pkt_recoded;
2648 if (avctx->pkt_timebase.den && avpkt->pts != AV_NOPTS_VALUE)
2649 sub->pts = av_rescale_q(avpkt->pts,
2650 avctx->pkt_timebase, AV_TIME_BASE_Q);
2651 ret = avctx->codec->decode(avctx, sub, got_sub_ptr, &pkt_recoded);
2652 av_assert1((ret >= 0) >= !!*got_sub_ptr &&
2653 !!*got_sub_ptr >= !!sub->num_rects);
2655 if (sub->num_rects && !sub->end_display_time && avpkt->duration &&
2656 avctx->pkt_timebase.num) {
2657 AVRational ms = { 1, 1000 };
2658 sub->end_display_time = av_rescale_q(avpkt->duration,
2659 avctx->pkt_timebase, ms);
2662 for (i = 0; i < sub->num_rects; i++) {
2663 if (sub->rects[i]->ass && !utf8_check(sub->rects[i]->ass)) {
2664 av_log(avctx, AV_LOG_ERROR,
2665 "Invalid UTF-8 in decoded subtitles text; "
2666 "maybe missing -sub_charenc option\n");
2667 avsubtitle_free(sub);
2668 return AVERROR_INVALIDDATA;
2672 if (tmp.data != pkt_recoded.data) { // did we recode?
2673 /* prevent from destroying side data from original packet */
2674 pkt_recoded.side_data = NULL;
2675 pkt_recoded.side_data_elems = 0;
2677 av_free_packet(&pkt_recoded);
2679 if (avctx->codec_descriptor->props & AV_CODEC_PROP_BITMAP_SUB)
2681 else if (avctx->codec_descriptor->props & AV_CODEC_PROP_TEXT_SUB)
2683 avctx->internal->pkt = NULL;
2687 av_packet_free_side_data(&tmp);
2693 avctx->frame_number++;
2699 void avsubtitle_free(AVSubtitle *sub)
2703 for (i = 0; i < sub->num_rects; i++) {
2704 av_freep(&sub->rects[i]->pict.data[0]);
2705 av_freep(&sub->rects[i]->pict.data[1]);
2706 av_freep(&sub->rects[i]->pict.data[2]);
2707 av_freep(&sub->rects[i]->pict.data[3]);
2708 av_freep(&sub->rects[i]->text);
2709 av_freep(&sub->rects[i]->ass);
2710 av_freep(&sub->rects[i]);
2713 av_freep(&sub->rects);
2715 memset(sub, 0, sizeof(AVSubtitle));
2718 av_cold int avcodec_close(AVCodecContext *avctx)
2723 if (avcodec_is_open(avctx)) {
2724 FramePool *pool = avctx->internal->pool;
2726 if (CONFIG_FRAME_THREAD_ENCODER &&
2727 avctx->internal->frame_thread_encoder && avctx->thread_count > 1) {
2728 ff_frame_thread_encoder_free(avctx);
2730 if (HAVE_THREADS && avctx->internal->thread_ctx)
2731 ff_thread_free(avctx);
2732 if (avctx->codec && avctx->codec->close)
2733 avctx->codec->close(avctx);
2734 avctx->coded_frame = NULL;
2735 avctx->internal->byte_buffer_size = 0;
2736 av_freep(&avctx->internal->byte_buffer);
2737 av_frame_free(&avctx->internal->to_free);
2738 for (i = 0; i < FF_ARRAY_ELEMS(pool->pools); i++)
2739 av_buffer_pool_uninit(&pool->pools[i]);
2740 av_freep(&avctx->internal->pool);
2742 if (avctx->hwaccel && avctx->hwaccel->uninit)
2743 avctx->hwaccel->uninit(avctx);
2744 av_freep(&avctx->internal->hwaccel_priv_data);
2746 av_freep(&avctx->internal);
2749 if (avctx->priv_data && avctx->codec && avctx->codec->priv_class)
2750 av_opt_free(avctx->priv_data);
2752 av_freep(&avctx->priv_data);
2753 if (av_codec_is_encoder(avctx->codec))
2754 av_freep(&avctx->extradata);
2755 avctx->codec = NULL;
2756 avctx->active_thread_type = 0;
2761 static enum AVCodecID remap_deprecated_codec_id(enum AVCodecID id)
2764 //This is for future deprecatec codec ids, its empty since
2765 //last major bump but will fill up again over time, please don't remove it
2766 // case AV_CODEC_ID_UTVIDEO_DEPRECATED: return AV_CODEC_ID_UTVIDEO;
2767 case AV_CODEC_ID_BRENDER_PIX_DEPRECATED : return AV_CODEC_ID_BRENDER_PIX;
2768 case AV_CODEC_ID_OPUS_DEPRECATED : return AV_CODEC_ID_OPUS;
2769 case AV_CODEC_ID_TAK_DEPRECATED : return AV_CODEC_ID_TAK;
2770 case AV_CODEC_ID_PAF_AUDIO_DEPRECATED : return AV_CODEC_ID_PAF_AUDIO;
2771 case AV_CODEC_ID_PCM_S24LE_PLANAR_DEPRECATED : return AV_CODEC_ID_PCM_S24LE_PLANAR;
2772 case AV_CODEC_ID_PCM_S32LE_PLANAR_DEPRECATED : return AV_CODEC_ID_PCM_S32LE_PLANAR;
2773 case AV_CODEC_ID_ADPCM_VIMA_DEPRECATED : return AV_CODEC_ID_ADPCM_VIMA;
2774 case AV_CODEC_ID_ESCAPE130_DEPRECATED : return AV_CODEC_ID_ESCAPE130;
2775 case AV_CODEC_ID_EXR_DEPRECATED : return AV_CODEC_ID_EXR;
2776 case AV_CODEC_ID_G2M_DEPRECATED : return AV_CODEC_ID_G2M;
2777 case AV_CODEC_ID_PAF_VIDEO_DEPRECATED : return AV_CODEC_ID_PAF_VIDEO;
2778 case AV_CODEC_ID_WEBP_DEPRECATED : return AV_CODEC_ID_WEBP;
2779 case AV_CODEC_ID_HEVC_DEPRECATED : return AV_CODEC_ID_HEVC;
2780 case AV_CODEC_ID_MVC1_DEPRECATED : return AV_CODEC_ID_MVC1;
2781 case AV_CODEC_ID_MVC2_DEPRECATED : return AV_CODEC_ID_MVC2;
2782 case AV_CODEC_ID_SANM_DEPRECATED : return AV_CODEC_ID_SANM;
2783 case AV_CODEC_ID_SGIRLE_DEPRECATED : return AV_CODEC_ID_SGIRLE;
2784 case AV_CODEC_ID_VP7_DEPRECATED : return AV_CODEC_ID_VP7;
2785 default : return id;
2789 static AVCodec *find_encdec(enum AVCodecID id, int encoder)
2791 AVCodec *p, *experimental = NULL;
2793 id= remap_deprecated_codec_id(id);
2795 if ((encoder ? av_codec_is_encoder(p) : av_codec_is_decoder(p)) &&
2797 if (p->capabilities & CODEC_CAP_EXPERIMENTAL && !experimental) {
2804 return experimental;
2807 AVCodec *avcodec_find_encoder(enum AVCodecID id)
2809 return find_encdec(id, 1);
2812 AVCodec *avcodec_find_encoder_by_name(const char *name)
2819 if (av_codec_is_encoder(p) && strcmp(name, p->name) == 0)
2826 AVCodec *avcodec_find_decoder(enum AVCodecID id)
2828 return find_encdec(id, 0);
2831 AVCodec *avcodec_find_decoder_by_name(const char *name)
2838 if (av_codec_is_decoder(p) && strcmp(name, p->name) == 0)
2845 const char *avcodec_get_name(enum AVCodecID id)
2847 const AVCodecDescriptor *cd;
2850 if (id == AV_CODEC_ID_NONE)
2852 cd = avcodec_descriptor_get(id);
2855 av_log(NULL, AV_LOG_WARNING, "Codec 0x%x is not in the full list.\n", id);
2856 codec = avcodec_find_decoder(id);
2859 codec = avcodec_find_encoder(id);
2862 return "unknown_codec";
2865 size_t av_get_codec_tag_string(char *buf, size_t buf_size, unsigned int codec_tag)
2867 int i, len, ret = 0;
2869 #define TAG_PRINT(x) \
2870 (((x) >= '0' && (x) <= '9') || \
2871 ((x) >= 'a' && (x) <= 'z') || ((x) >= 'A' && (x) <= 'Z') || \
2872 ((x) == '.' || (x) == ' ' || (x) == '-' || (x) == '_'))
2874 for (i = 0; i < 4; i++) {
2875 len = snprintf(buf, buf_size,
2876 TAG_PRINT(codec_tag & 0xFF) ? "%c" : "[%d]", codec_tag & 0xFF);
2878 buf_size = buf_size > len ? buf_size - len : 0;
2885 void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)
2887 const char *codec_type;
2888 const char *codec_name;
2889 const char *profile = NULL;
2892 AVRational display_aspect_ratio;
2894 if (!buf || buf_size <= 0)
2896 codec_type = av_get_media_type_string(enc->codec_type);
2897 codec_name = avcodec_get_name(enc->codec_id);
2898 if (enc->profile != FF_PROFILE_UNKNOWN) {
2902 p = encode ? avcodec_find_encoder(enc->codec_id) :
2903 avcodec_find_decoder(enc->codec_id);
2905 profile = av_get_profile_name(p, enc->profile);
2908 snprintf(buf, buf_size, "%s: %s", codec_type ? codec_type : "unknown",
2910 buf[0] ^= 'a' ^ 'A'; /* first letter in uppercase */
2912 if (enc->codec && strcmp(enc->codec->name, codec_name))
2913 snprintf(buf + strlen(buf), buf_size - strlen(buf), " (%s)", enc->codec->name);
2916 snprintf(buf + strlen(buf), buf_size - strlen(buf), " (%s)", profile);
2917 if (enc->codec_tag) {
2919 av_get_codec_tag_string(tag_buf, sizeof(tag_buf), enc->codec_tag);
2920 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2921 " (%s / 0x%04X)", tag_buf, enc->codec_tag);
2924 switch (enc->codec_type) {
2925 case AVMEDIA_TYPE_VIDEO:
2926 if (enc->pix_fmt != AV_PIX_FMT_NONE) {
2927 char detail[256] = "(";
2928 const char *colorspace_name;
2929 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2931 av_get_pix_fmt_name(enc->pix_fmt));
2932 if (enc->bits_per_raw_sample &&
2933 enc->bits_per_raw_sample <= av_pix_fmt_desc_get(enc->pix_fmt)->comp[0].depth_minus1)
2934 av_strlcatf(detail, sizeof(detail), "%d bpc, ", enc->bits_per_raw_sample);
2935 if (enc->color_range != AVCOL_RANGE_UNSPECIFIED)
2936 av_strlcatf(detail, sizeof(detail),
2937 enc->color_range == AVCOL_RANGE_MPEG ? "tv, ": "pc, ");
2939 colorspace_name = av_get_colorspace_name(enc->colorspace);
2940 if (colorspace_name)
2941 av_strlcatf(detail, sizeof(detail), "%s, ", colorspace_name);
2943 if (strlen(detail) > 1) {
2944 detail[strlen(detail) - 2] = 0;
2945 av_strlcatf(buf, buf_size, "%s)", detail);
2949 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2951 enc->width, enc->height);
2952 if (enc->sample_aspect_ratio.num) {
2953 av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
2954 enc->width * enc->sample_aspect_ratio.num,
2955 enc->height * enc->sample_aspect_ratio.den,
2957 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2958 " [SAR %d:%d DAR %d:%d]",
2959 enc->sample_aspect_ratio.num, enc->sample_aspect_ratio.den,
2960 display_aspect_ratio.num, display_aspect_ratio.den);
2962 if (av_log_get_level() >= AV_LOG_DEBUG) {
2963 int g = av_gcd(enc->time_base.num, enc->time_base.den);
2964 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2966 enc->time_base.num / g, enc->time_base.den / g);
2970 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2971 ", q=%d-%d", enc->qmin, enc->qmax);
2974 case AVMEDIA_TYPE_AUDIO:
2975 if (enc->sample_rate) {
2976 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2977 ", %d Hz", enc->sample_rate);
2979 av_strlcat(buf, ", ", buf_size);
2980 av_get_channel_layout_string(buf + strlen(buf), buf_size - strlen(buf), enc->channels, enc->channel_layout);
2981 if (enc->sample_fmt != AV_SAMPLE_FMT_NONE) {
2982 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2983 ", %s", av_get_sample_fmt_name(enc->sample_fmt));
2986 case AVMEDIA_TYPE_DATA:
2987 if (av_log_get_level() >= AV_LOG_DEBUG) {
2988 int g = av_gcd(enc->time_base.num, enc->time_base.den);
2990 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2992 enc->time_base.num / g, enc->time_base.den / g);
2995 case AVMEDIA_TYPE_SUBTITLE:
2997 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2998 ", %dx%d", enc->width, enc->height);
3004 if (enc->flags & CODEC_FLAG_PASS1)
3005 snprintf(buf + strlen(buf), buf_size - strlen(buf),
3007 if (enc->flags & CODEC_FLAG_PASS2)
3008 snprintf(buf + strlen(buf), buf_size - strlen(buf),
3011 bitrate = get_bit_rate(enc);
3013 snprintf(buf + strlen(buf), buf_size - strlen(buf),
3014 ", %d kb/s", bitrate / 1000);
3015 } else if (enc->rc_max_rate > 0) {
3016 snprintf(buf + strlen(buf), buf_size - strlen(buf),
3017 ", max. %d kb/s", enc->rc_max_rate / 1000);
3021 const char *av_get_profile_name(const AVCodec *codec, int profile)
3024 if (profile == FF_PROFILE_UNKNOWN || !codec->profiles)
3027 for (p = codec->profiles; p->profile != FF_PROFILE_UNKNOWN; p++)
3028 if (p->profile == profile)
3034 unsigned avcodec_version(void)
3036 // av_assert0(AV_CODEC_ID_V410==164);
3037 av_assert0(AV_CODEC_ID_PCM_S8_PLANAR==65563);
3038 av_assert0(AV_CODEC_ID_ADPCM_G722==69660);
3039 // av_assert0(AV_CODEC_ID_BMV_AUDIO==86071);
3040 av_assert0(AV_CODEC_ID_SRT==94216);
3041 av_assert0(LIBAVCODEC_VERSION_MICRO >= 100);
3043 av_assert0(CODEC_ID_CLLC == AV_CODEC_ID_CLLC);
3044 av_assert0(CODEC_ID_PCM_S8_PLANAR == AV_CODEC_ID_PCM_S8_PLANAR);
3045 av_assert0(CODEC_ID_ADPCM_IMA_APC == AV_CODEC_ID_ADPCM_IMA_APC);
3046 av_assert0(CODEC_ID_ILBC == AV_CODEC_ID_ILBC);
3047 av_assert0(CODEC_ID_SRT == AV_CODEC_ID_SRT);
3048 return LIBAVCODEC_VERSION_INT;
3051 const char *avcodec_configuration(void)
3053 return FFMPEG_CONFIGURATION;
3056 const char *avcodec_license(void)
3058 #define LICENSE_PREFIX "libavcodec license: "
3059 return LICENSE_PREFIX FFMPEG_LICENSE + sizeof(LICENSE_PREFIX) - 1;
3062 void avcodec_flush_buffers(AVCodecContext *avctx)
3064 if (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME)
3065 ff_thread_flush(avctx);
3066 else if (avctx->codec->flush)
3067 avctx->codec->flush(avctx);
3069 avctx->pts_correction_last_pts =
3070 avctx->pts_correction_last_dts = INT64_MIN;
3072 if (!avctx->refcounted_frames)
3073 av_frame_unref(avctx->internal->to_free);
3076 int av_get_exact_bits_per_sample(enum AVCodecID codec_id)
3079 case AV_CODEC_ID_8SVX_EXP:
3080 case AV_CODEC_ID_8SVX_FIB:
3081 case AV_CODEC_ID_ADPCM_CT:
3082 case AV_CODEC_ID_ADPCM_IMA_APC:
3083 case AV_CODEC_ID_ADPCM_IMA_EA_SEAD:
3084 case AV_CODEC_ID_ADPCM_IMA_OKI:
3085 case AV_CODEC_ID_ADPCM_IMA_WS:
3086 case AV_CODEC_ID_ADPCM_G722:
3087 case AV_CODEC_ID_ADPCM_YAMAHA:
3089 case AV_CODEC_ID_DSD_LSBF:
3090 case AV_CODEC_ID_DSD_MSBF:
3091 case AV_CODEC_ID_DSD_LSBF_PLANAR:
3092 case AV_CODEC_ID_DSD_MSBF_PLANAR:
3093 case AV_CODEC_ID_PCM_ALAW:
3094 case AV_CODEC_ID_PCM_MULAW:
3095 case AV_CODEC_ID_PCM_S8:
3096 case AV_CODEC_ID_PCM_S8_PLANAR:
3097 case AV_CODEC_ID_PCM_U8:
3098 case AV_CODEC_ID_PCM_ZORK:
3100 case AV_CODEC_ID_PCM_S16BE:
3101 case AV_CODEC_ID_PCM_S16BE_PLANAR:
3102 case AV_CODEC_ID_PCM_S16LE:
3103 case AV_CODEC_ID_PCM_S16LE_PLANAR:
3104 case AV_CODEC_ID_PCM_U16BE:
3105 case AV_CODEC_ID_PCM_U16LE:
3107 case AV_CODEC_ID_PCM_S24DAUD:
3108 case AV_CODEC_ID_PCM_S24BE:
3109 case AV_CODEC_ID_PCM_S24LE:
3110 case AV_CODEC_ID_PCM_S24LE_PLANAR:
3111 case AV_CODEC_ID_PCM_U24BE:
3112 case AV_CODEC_ID_PCM_U24LE:
3114 case AV_CODEC_ID_PCM_S32BE:
3115 case AV_CODEC_ID_PCM_S32LE:
3116 case AV_CODEC_ID_PCM_S32LE_PLANAR:
3117 case AV_CODEC_ID_PCM_U32BE:
3118 case AV_CODEC_ID_PCM_U32LE:
3119 case AV_CODEC_ID_PCM_F32BE:
3120 case AV_CODEC_ID_PCM_F32LE:
3122 case AV_CODEC_ID_PCM_F64BE:
3123 case AV_CODEC_ID_PCM_F64LE:
3130 enum AVCodecID av_get_pcm_codec(enum AVSampleFormat fmt, int be)
3132 static const enum AVCodecID map[AV_SAMPLE_FMT_NB][2] = {
3133 [AV_SAMPLE_FMT_U8 ] = { AV_CODEC_ID_PCM_U8, AV_CODEC_ID_PCM_U8 },
3134 [AV_SAMPLE_FMT_S16 ] = { AV_CODEC_ID_PCM_S16LE, AV_CODEC_ID_PCM_S16BE },
3135 [AV_SAMPLE_FMT_S32 ] = { AV_CODEC_ID_PCM_S32LE, AV_CODEC_ID_PCM_S32BE },
3136 [AV_SAMPLE_FMT_FLT ] = { AV_CODEC_ID_PCM_F32LE, AV_CODEC_ID_PCM_F32BE },
3137 [AV_SAMPLE_FMT_DBL ] = { AV_CODEC_ID_PCM_F64LE, AV_CODEC_ID_PCM_F64BE },
3138 [AV_SAMPLE_FMT_U8P ] = { AV_CODEC_ID_PCM_U8, AV_CODEC_ID_PCM_U8 },
3139 [AV_SAMPLE_FMT_S16P] = { AV_CODEC_ID_PCM_S16LE, AV_CODEC_ID_PCM_S16BE },
3140 [AV_SAMPLE_FMT_S32P] = { AV_CODEC_ID_PCM_S32LE, AV_CODEC_ID_PCM_S32BE },
3141 [AV_SAMPLE_FMT_FLTP] = { AV_CODEC_ID_PCM_F32LE, AV_CODEC_ID_PCM_F32BE },
3142 [AV_SAMPLE_FMT_DBLP] = { AV_CODEC_ID_PCM_F64LE, AV_CODEC_ID_PCM_F64BE },
3144 if (fmt < 0 || fmt >= AV_SAMPLE_FMT_NB)
3145 return AV_CODEC_ID_NONE;
3146 if (be < 0 || be > 1)
3148 return map[fmt][be];
3151 int av_get_bits_per_sample(enum AVCodecID codec_id)
3154 case AV_CODEC_ID_ADPCM_SBPRO_2:
3156 case AV_CODEC_ID_ADPCM_SBPRO_3:
3158 case AV_CODEC_ID_ADPCM_SBPRO_4:
3159 case AV_CODEC_ID_ADPCM_IMA_WAV:
3160 case AV_CODEC_ID_ADPCM_IMA_QT:
3161 case AV_CODEC_ID_ADPCM_SWF:
3162 case AV_CODEC_ID_ADPCM_MS:
3165 return av_get_exact_bits_per_sample(codec_id);
3169 int av_get_audio_frame_duration(AVCodecContext *avctx, int frame_bytes)
3171 int id, sr, ch, ba, tag, bps;
3173 id = avctx->codec_id;
3174 sr = avctx->sample_rate;
3175 ch = avctx->channels;
3176 ba = avctx->block_align;
3177 tag = avctx->codec_tag;
3178 bps = av_get_exact_bits_per_sample(avctx->codec_id);
3180 /* codecs with an exact constant bits per sample */
3181 if (bps > 0 && ch > 0 && frame_bytes > 0 && ch < 32768 && bps < 32768)
3182 return (frame_bytes * 8LL) / (bps * ch);
3183 bps = avctx->bits_per_coded_sample;
3185 /* codecs with a fixed packet duration */
3187 case AV_CODEC_ID_ADPCM_ADX: return 32;
3188 case AV_CODEC_ID_ADPCM_IMA_QT: return 64;
3189 case AV_CODEC_ID_ADPCM_EA_XAS: return 128;
3190 case AV_CODEC_ID_AMR_NB:
3191 case AV_CODEC_ID_EVRC:
3192 case AV_CODEC_ID_GSM:
3193 case AV_CODEC_ID_QCELP:
3194 case AV_CODEC_ID_RA_288: return 160;
3195 case AV_CODEC_ID_AMR_WB:
3196 case AV_CODEC_ID_GSM_MS: return 320;
3197 case AV_CODEC_ID_MP1: return 384;
3198 case AV_CODEC_ID_ATRAC1: return 512;
3199 case AV_CODEC_ID_ATRAC3: return 1024;
3200 case AV_CODEC_ID_MP2:
3201 case AV_CODEC_ID_MUSEPACK7: return 1152;
3202 case AV_CODEC_ID_AC3: return 1536;
3206 /* calc from sample rate */
3207 if (id == AV_CODEC_ID_TTA)
3208 return 256 * sr / 245;
3211 /* calc from sample rate and channels */
3212 if (id == AV_CODEC_ID_BINKAUDIO_DCT)
3213 return (480 << (sr / 22050)) / ch;
3218 /* calc from block_align */
3219 if (id == AV_CODEC_ID_SIPR) {
3221 case 20: return 160;
3222 case 19: return 144;
3223 case 29: return 288;
3224 case 37: return 480;
3226 } else if (id == AV_CODEC_ID_ILBC) {
3228 case 38: return 160;
3229 case 50: return 240;
3234 if (frame_bytes > 0) {
3235 /* calc from frame_bytes only */
3236 if (id == AV_CODEC_ID_TRUESPEECH)
3237 return 240 * (frame_bytes / 32);
3238 if (id == AV_CODEC_ID_NELLYMOSER)
3239 return 256 * (frame_bytes / 64);
3240 if (id == AV_CODEC_ID_RA_144)
3241 return 160 * (frame_bytes / 20);
3242 if (id == AV_CODEC_ID_G723_1)
3243 return 240 * (frame_bytes / 24);
3246 /* calc from frame_bytes and bits_per_coded_sample */
3247 if (id == AV_CODEC_ID_ADPCM_G726)
3248 return frame_bytes * 8 / bps;
3252 /* calc from frame_bytes and channels */
3254 case AV_CODEC_ID_ADPCM_AFC:
3255 return frame_bytes / (9 * ch) * 16;
3256 case AV_CODEC_ID_ADPCM_DTK:
3257 return frame_bytes / (16 * ch) * 28;
3258 case AV_CODEC_ID_ADPCM_4XM:
3259 case AV_CODEC_ID_ADPCM_IMA_ISS:
3260 return (frame_bytes - 4 * ch) * 2 / ch;
3261 case AV_CODEC_ID_ADPCM_IMA_SMJPEG:
3262 return (frame_bytes - 4) * 2 / ch;
3263 case AV_CODEC_ID_ADPCM_IMA_AMV:
3264 return (frame_bytes - 8) * 2 / ch;
3265 case AV_CODEC_ID_ADPCM_XA:
3266 return (frame_bytes / 128) * 224 / ch;
3267 case AV_CODEC_ID_INTERPLAY_DPCM:
3268 return (frame_bytes - 6 - ch) / ch;
3269 case AV_CODEC_ID_ROQ_DPCM:
3270 return (frame_bytes - 8) / ch;
3271 case AV_CODEC_ID_XAN_DPCM:
3272 return (frame_bytes - 2 * ch) / ch;
3273 case AV_CODEC_ID_MACE3:
3274 return 3 * frame_bytes / ch;
3275 case AV_CODEC_ID_MACE6:
3276 return 6 * frame_bytes / ch;
3277 case AV_CODEC_ID_PCM_LXF:
3278 return 2 * (frame_bytes / (5 * ch));
3279 case AV_CODEC_ID_IAC:
3280 case AV_CODEC_ID_IMC:
3281 return 4 * frame_bytes / ch;
3285 /* calc from frame_bytes, channels, and codec_tag */
3286 if (id == AV_CODEC_ID_SOL_DPCM) {
3288 return frame_bytes / ch;
3290 return frame_bytes * 2 / ch;
3295 /* calc from frame_bytes, channels, and block_align */
3296 int blocks = frame_bytes / ba;
3297 switch (avctx->codec_id) {
3298 case AV_CODEC_ID_ADPCM_IMA_WAV:
3299 if (bps < 2 || bps > 5)
3301 return blocks * (1 + (ba - 4 * ch) / (bps * ch) * 8);
3302 case AV_CODEC_ID_ADPCM_IMA_DK3:
3303 return blocks * (((ba - 16) * 2 / 3 * 4) / ch);
3304 case AV_CODEC_ID_ADPCM_IMA_DK4:
3305 return blocks * (1 + (ba - 4 * ch) * 2 / ch);
3306 case AV_CODEC_ID_ADPCM_IMA_RAD:
3307 return blocks * ((ba - 4 * ch) * 2 / ch);
3308 case AV_CODEC_ID_ADPCM_MS:
3309 return blocks * (2 + (ba - 7 * ch) * 2 / ch);
3314 /* calc from frame_bytes, channels, and bits_per_coded_sample */
3315 switch (avctx->codec_id) {
3316 case AV_CODEC_ID_PCM_DVD:
3319 return 2 * (frame_bytes / ((bps * 2 / 8) * ch));
3320 case AV_CODEC_ID_PCM_BLURAY:
3323 return frame_bytes / ((FFALIGN(ch, 2) * bps) / 8);
3324 case AV_CODEC_ID_S302M:
3325 return 2 * (frame_bytes / ((bps + 4) / 4)) / ch;
3335 int ff_thread_init(AVCodecContext *s)
3342 unsigned int av_xiphlacing(unsigned char *s, unsigned int v)
3356 int ff_match_2uint16(const uint16_t(*tab)[2], int size, int a, int b)
3359 for (i = 0; i < size && !(tab[i][0] == a && tab[i][1] == b); i++) ;
3363 #if FF_API_MISSING_SAMPLE
3364 FF_DISABLE_DEPRECATION_WARNINGS
3365 void av_log_missing_feature(void *avc, const char *feature, int want_sample)
3367 av_log(avc, AV_LOG_WARNING, "%s is not implemented. Update your FFmpeg "
3368 "version to the newest one from Git. If the problem still "
3369 "occurs, it means that your file has a feature which has not "
3370 "been implemented.\n", feature);
3372 av_log_ask_for_sample(avc, NULL);
3375 void av_log_ask_for_sample(void *avc, const char *msg, ...)
3377 va_list argument_list;
3379 va_start(argument_list, msg);
3382 av_vlog(avc, AV_LOG_WARNING, msg, argument_list);
3383 av_log(avc, AV_LOG_WARNING, "If you want to help, upload a sample "
3384 "of this file to ftp://upload.ffmpeg.org/incoming/ "
3385 "and contact the ffmpeg-devel mailing list. (ffmpeg-devel@ffmpeg.org)\n");
3387 va_end(argument_list);
3389 FF_ENABLE_DEPRECATION_WARNINGS
3390 #endif /* FF_API_MISSING_SAMPLE */
3392 static AVHWAccel *first_hwaccel = NULL;
3393 static AVHWAccel **last_hwaccel = &first_hwaccel;
3395 void av_register_hwaccel(AVHWAccel *hwaccel)
3397 AVHWAccel **p = last_hwaccel;
3398 hwaccel->next = NULL;
3399 while(*p || avpriv_atomic_ptr_cas((void * volatile *)p, NULL, hwaccel))
3401 last_hwaccel = &hwaccel->next;
3404 AVHWAccel *av_hwaccel_next(const AVHWAccel *hwaccel)
3406 return hwaccel ? hwaccel->next : first_hwaccel;
3409 int av_lockmgr_register(int (*cb)(void **mutex, enum AVLockOp op))
3412 if (lockmgr_cb(&codec_mutex, AV_LOCK_DESTROY))
3414 if (lockmgr_cb(&avformat_mutex, AV_LOCK_DESTROY))
3421 if (lockmgr_cb(&codec_mutex, AV_LOCK_CREATE))
3423 if (lockmgr_cb(&avformat_mutex, AV_LOCK_CREATE))
3429 int ff_lock_avcodec(AVCodecContext *log_ctx)
3432 if ((*lockmgr_cb)(&codec_mutex, AV_LOCK_OBTAIN))
3435 entangled_thread_counter++;
3436 if (entangled_thread_counter != 1) {
3437 av_log(log_ctx, AV_LOG_ERROR, "Insufficient thread locking around avcodec_open/close()\n");
3439 av_log(log_ctx, AV_LOG_ERROR, "No lock manager is set, please see av_lockmgr_register()\n");
3440 ff_avcodec_locked = 1;
3441 ff_unlock_avcodec();
3442 return AVERROR(EINVAL);
3444 av_assert0(!ff_avcodec_locked);
3445 ff_avcodec_locked = 1;
3449 int ff_unlock_avcodec(void)
3451 av_assert0(ff_avcodec_locked);
3452 ff_avcodec_locked = 0;
3453 entangled_thread_counter--;
3455 if ((*lockmgr_cb)(&codec_mutex, AV_LOCK_RELEASE))
3461 int avpriv_lock_avformat(void)
3464 if ((*lockmgr_cb)(&avformat_mutex, AV_LOCK_OBTAIN))
3470 int avpriv_unlock_avformat(void)
3473 if ((*lockmgr_cb)(&avformat_mutex, AV_LOCK_RELEASE))
3479 unsigned int avpriv_toupper4(unsigned int x)
3481 return av_toupper(x & 0xFF) +
3482 (av_toupper((x >> 8) & 0xFF) << 8) +
3483 (av_toupper((x >> 16) & 0xFF) << 16) +
3484 ((unsigned)av_toupper((x >> 24) & 0xFF) << 24);
3487 int ff_thread_ref_frame(ThreadFrame *dst, ThreadFrame *src)
3491 dst->owner = src->owner;
3493 ret = av_frame_ref(dst->f, src->f);
3497 if (src->progress &&
3498 !(dst->progress = av_buffer_ref(src->progress))) {
3499 ff_thread_release_buffer(dst->owner, dst);
3500 return AVERROR(ENOMEM);
3508 enum AVPixelFormat ff_thread_get_format(AVCodecContext *avctx, const enum AVPixelFormat *fmt)
3510 return ff_get_format(avctx, fmt);
3513 int ff_thread_get_buffer(AVCodecContext *avctx, ThreadFrame *f, int flags)
3516 return ff_get_buffer(avctx, f->f, flags);
3519 void ff_thread_release_buffer(AVCodecContext *avctx, ThreadFrame *f)
3522 av_frame_unref(f->f);
3525 void ff_thread_finish_setup(AVCodecContext *avctx)
3529 void ff_thread_report_progress(ThreadFrame *f, int progress, int field)
3533 void ff_thread_await_progress(ThreadFrame *f, int progress, int field)
3537 int ff_thread_can_start_frame(AVCodecContext *avctx)
3542 int ff_alloc_entries(AVCodecContext *avctx, int count)
3547 void ff_reset_entries(AVCodecContext *avctx)
3551 void ff_thread_await_progress2(AVCodecContext *avctx, int field, int thread, int shift)
3555 void ff_thread_report_progress2(AVCodecContext *avctx, int field, int thread, int n)
3561 enum AVMediaType avcodec_get_type(enum AVCodecID codec_id)
3563 AVCodec *c= avcodec_find_decoder(codec_id);
3565 c= avcodec_find_encoder(codec_id);
3569 if (codec_id <= AV_CODEC_ID_NONE)
3570 return AVMEDIA_TYPE_UNKNOWN;
3571 else if (codec_id < AV_CODEC_ID_FIRST_AUDIO)
3572 return AVMEDIA_TYPE_VIDEO;
3573 else if (codec_id < AV_CODEC_ID_FIRST_SUBTITLE)
3574 return AVMEDIA_TYPE_AUDIO;
3575 else if (codec_id < AV_CODEC_ID_FIRST_UNKNOWN)
3576 return AVMEDIA_TYPE_SUBTITLE;
3578 return AVMEDIA_TYPE_UNKNOWN;
3581 int avcodec_is_open(AVCodecContext *s)
3583 return !!s->internal;
3586 int avpriv_bprint_to_extradata(AVCodecContext *avctx, struct AVBPrint *buf)
3591 ret = av_bprint_finalize(buf, &str);
3594 avctx->extradata = str;
3595 /* Note: the string is NUL terminated (so extradata can be read as a
3596 * string), but the ending character is not accounted in the size (in
3597 * binary formats you are likely not supposed to mux that character). When
3598 * extradata is copied, it is also padded with FF_INPUT_BUFFER_PADDING_SIZE
3600 avctx->extradata_size = buf->len;
3604 const uint8_t *avpriv_find_start_code(const uint8_t *av_restrict p,
3606 uint32_t *av_restrict state)
3610 av_assert0(p <= end);
3614 for (i = 0; i < 3; i++) {
3615 uint32_t tmp = *state << 8;
3616 *state = tmp + *(p++);
3617 if (tmp == 0x100 || p == end)
3622 if (p[-1] > 1 ) p += 3;
3623 else if (p[-2] ) p += 2;
3624 else if (p[-3]|(p[-1]-1)) p++;
3631 p = FFMIN(p, end) - 4;
3632 *state = AV_RB32(p);