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 static inline int ff_fast_malloc(void *ptr, unsigned int *size, size_t min_size, int zero_realloc)
125 if (min_size < *size)
127 min_size = FFMAX(17 * min_size / 16 + 32, min_size);
129 *p = zero_realloc ? av_mallocz(min_size) : av_malloc(min_size);
136 void av_fast_padded_malloc(void *ptr, unsigned int *size, size_t min_size)
139 if (min_size > SIZE_MAX - FF_INPUT_BUFFER_PADDING_SIZE) {
144 if (!ff_fast_malloc(p, size, min_size + FF_INPUT_BUFFER_PADDING_SIZE, 1))
145 memset(*p + min_size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
148 void av_fast_padded_mallocz(void *ptr, unsigned int *size, size_t min_size)
151 if (min_size > SIZE_MAX - FF_INPUT_BUFFER_PADDING_SIZE) {
156 if (!ff_fast_malloc(p, size, min_size + FF_INPUT_BUFFER_PADDING_SIZE, 1))
157 memset(*p, 0, min_size + FF_INPUT_BUFFER_PADDING_SIZE);
160 /* encoder management */
161 static AVCodec *first_avcodec = NULL;
162 static AVCodec **last_avcodec = &first_avcodec;
164 AVCodec *av_codec_next(const AVCodec *c)
169 return first_avcodec;
172 static av_cold void avcodec_init(void)
174 static int initialized = 0;
176 if (initialized != 0)
181 ff_me_cmp_init_static();
184 int av_codec_is_encoder(const AVCodec *codec)
186 return codec && (codec->encode_sub || codec->encode2);
189 int av_codec_is_decoder(const AVCodec *codec)
191 return codec && codec->decode;
194 av_cold void avcodec_register(AVCodec *codec)
201 while(*p || avpriv_atomic_ptr_cas((void * volatile *)p, NULL, codec))
203 last_avcodec = &codec->next;
205 if (codec->init_static_data)
206 codec->init_static_data(codec);
210 unsigned avcodec_get_edge_width(void)
216 #if FF_API_SET_DIMENSIONS
217 void avcodec_set_dimensions(AVCodecContext *s, int width, int height)
219 int ret = ff_set_dimensions(s, width, height);
221 av_log(s, AV_LOG_WARNING, "Failed to set dimensions %d %d\n", width, height);
226 int ff_set_dimensions(AVCodecContext *s, int width, int height)
228 int ret = av_image_check_size(width, height, 0, s);
233 s->coded_width = width;
234 s->coded_height = height;
235 s->width = FF_CEIL_RSHIFT(width, s->lowres);
236 s->height = FF_CEIL_RSHIFT(height, s->lowres);
241 int ff_set_sar(AVCodecContext *avctx, AVRational sar)
243 int ret = av_image_check_sar(avctx->width, avctx->height, sar);
246 av_log(avctx, AV_LOG_WARNING, "ignoring invalid SAR: %u/%u\n",
248 avctx->sample_aspect_ratio = (AVRational){ 0, 1 };
251 avctx->sample_aspect_ratio = sar;
256 int ff_side_data_update_matrix_encoding(AVFrame *frame,
257 enum AVMatrixEncoding matrix_encoding)
259 AVFrameSideData *side_data;
260 enum AVMatrixEncoding *data;
262 side_data = av_frame_get_side_data(frame, AV_FRAME_DATA_MATRIXENCODING);
264 side_data = av_frame_new_side_data(frame, AV_FRAME_DATA_MATRIXENCODING,
265 sizeof(enum AVMatrixEncoding));
268 return AVERROR(ENOMEM);
270 data = (enum AVMatrixEncoding*)side_data->data;
271 *data = matrix_encoding;
276 void avcodec_align_dimensions2(AVCodecContext *s, int *width, int *height,
277 int linesize_align[AV_NUM_DATA_POINTERS])
283 switch (s->pix_fmt) {
284 case AV_PIX_FMT_YUV420P:
285 case AV_PIX_FMT_YUYV422:
286 case AV_PIX_FMT_YVYU422:
287 case AV_PIX_FMT_UYVY422:
288 case AV_PIX_FMT_YUV422P:
289 case AV_PIX_FMT_YUV440P:
290 case AV_PIX_FMT_YUV444P:
291 case AV_PIX_FMT_GBRAP:
292 case AV_PIX_FMT_GBRP:
293 case AV_PIX_FMT_GRAY8:
294 case AV_PIX_FMT_GRAY16BE:
295 case AV_PIX_FMT_GRAY16LE:
296 case AV_PIX_FMT_YUVJ420P:
297 case AV_PIX_FMT_YUVJ422P:
298 case AV_PIX_FMT_YUVJ440P:
299 case AV_PIX_FMT_YUVJ444P:
300 case AV_PIX_FMT_YUVA420P:
301 case AV_PIX_FMT_YUVA422P:
302 case AV_PIX_FMT_YUVA444P:
303 case AV_PIX_FMT_YUV420P9LE:
304 case AV_PIX_FMT_YUV420P9BE:
305 case AV_PIX_FMT_YUV420P10LE:
306 case AV_PIX_FMT_YUV420P10BE:
307 case AV_PIX_FMT_YUV420P12LE:
308 case AV_PIX_FMT_YUV420P12BE:
309 case AV_PIX_FMT_YUV420P14LE:
310 case AV_PIX_FMT_YUV420P14BE:
311 case AV_PIX_FMT_YUV420P16LE:
312 case AV_PIX_FMT_YUV420P16BE:
313 case AV_PIX_FMT_YUVA420P9LE:
314 case AV_PIX_FMT_YUVA420P9BE:
315 case AV_PIX_FMT_YUVA420P10LE:
316 case AV_PIX_FMT_YUVA420P10BE:
317 case AV_PIX_FMT_YUVA420P16LE:
318 case AV_PIX_FMT_YUVA420P16BE:
319 case AV_PIX_FMT_YUV422P9LE:
320 case AV_PIX_FMT_YUV422P9BE:
321 case AV_PIX_FMT_YUV422P10LE:
322 case AV_PIX_FMT_YUV422P10BE:
323 case AV_PIX_FMT_YUV422P12LE:
324 case AV_PIX_FMT_YUV422P12BE:
325 case AV_PIX_FMT_YUV422P14LE:
326 case AV_PIX_FMT_YUV422P14BE:
327 case AV_PIX_FMT_YUV422P16LE:
328 case AV_PIX_FMT_YUV422P16BE:
329 case AV_PIX_FMT_YUVA422P9LE:
330 case AV_PIX_FMT_YUVA422P9BE:
331 case AV_PIX_FMT_YUVA422P10LE:
332 case AV_PIX_FMT_YUVA422P10BE:
333 case AV_PIX_FMT_YUVA422P16LE:
334 case AV_PIX_FMT_YUVA422P16BE:
335 case AV_PIX_FMT_YUV444P9LE:
336 case AV_PIX_FMT_YUV444P9BE:
337 case AV_PIX_FMT_YUV444P10LE:
338 case AV_PIX_FMT_YUV444P10BE:
339 case AV_PIX_FMT_YUV444P12LE:
340 case AV_PIX_FMT_YUV444P12BE:
341 case AV_PIX_FMT_YUV444P14LE:
342 case AV_PIX_FMT_YUV444P14BE:
343 case AV_PIX_FMT_YUV444P16LE:
344 case AV_PIX_FMT_YUV444P16BE:
345 case AV_PIX_FMT_YUVA444P9LE:
346 case AV_PIX_FMT_YUVA444P9BE:
347 case AV_PIX_FMT_YUVA444P10LE:
348 case AV_PIX_FMT_YUVA444P10BE:
349 case AV_PIX_FMT_YUVA444P16LE:
350 case AV_PIX_FMT_YUVA444P16BE:
351 case AV_PIX_FMT_GBRP9LE:
352 case AV_PIX_FMT_GBRP9BE:
353 case AV_PIX_FMT_GBRP10LE:
354 case AV_PIX_FMT_GBRP10BE:
355 case AV_PIX_FMT_GBRP12LE:
356 case AV_PIX_FMT_GBRP12BE:
357 case AV_PIX_FMT_GBRP14LE:
358 case AV_PIX_FMT_GBRP14BE:
359 w_align = 16; //FIXME assume 16 pixel per macroblock
360 h_align = 16 * 2; // interlaced needs 2 macroblocks height
362 case AV_PIX_FMT_YUV411P:
363 case AV_PIX_FMT_YUVJ411P:
364 case AV_PIX_FMT_UYYVYY411:
368 case AV_PIX_FMT_YUV410P:
369 if (s->codec_id == AV_CODEC_ID_SVQ1) {
374 case AV_PIX_FMT_RGB555:
375 if (s->codec_id == AV_CODEC_ID_RPZA) {
380 case AV_PIX_FMT_PAL8:
381 case AV_PIX_FMT_BGR8:
382 case AV_PIX_FMT_RGB8:
383 if (s->codec_id == AV_CODEC_ID_SMC ||
384 s->codec_id == AV_CODEC_ID_CINEPAK) {
389 case AV_PIX_FMT_BGR24:
390 if ((s->codec_id == AV_CODEC_ID_MSZH) ||
391 (s->codec_id == AV_CODEC_ID_ZLIB)) {
396 case AV_PIX_FMT_RGB24:
397 if (s->codec_id == AV_CODEC_ID_CINEPAK) {
408 if (s->codec_id == AV_CODEC_ID_IFF_ILBM || s->codec_id == AV_CODEC_ID_IFF_BYTERUN1) {
409 w_align = FFMAX(w_align, 8);
412 *width = FFALIGN(*width, w_align);
413 *height = FFALIGN(*height, h_align);
414 if (s->codec_id == AV_CODEC_ID_H264 || s->lowres)
415 // some of the optimized chroma MC reads one line too much
416 // which is also done in mpeg decoders with lowres > 0
419 for (i = 0; i < 4; i++)
420 linesize_align[i] = STRIDE_ALIGN;
423 void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height)
425 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(s->pix_fmt);
426 int chroma_shift = desc->log2_chroma_w;
427 int linesize_align[AV_NUM_DATA_POINTERS];
430 avcodec_align_dimensions2(s, width, height, linesize_align);
431 align = FFMAX(linesize_align[0], linesize_align[3]);
432 linesize_align[1] <<= chroma_shift;
433 linesize_align[2] <<= chroma_shift;
434 align = FFMAX3(align, linesize_align[1], linesize_align[2]);
435 *width = FFALIGN(*width, align);
438 int avcodec_enum_to_chroma_pos(int *xpos, int *ypos, enum AVChromaLocation pos)
440 if (pos <= AVCHROMA_LOC_UNSPECIFIED || pos >= AVCHROMA_LOC_NB)
441 return AVERROR(EINVAL);
444 *xpos = (pos&1) * 128;
445 *ypos = ((pos>>1)^(pos<4)) * 128;
450 enum AVChromaLocation avcodec_chroma_pos_to_enum(int xpos, int ypos)
454 for (pos = AVCHROMA_LOC_UNSPECIFIED + 1; pos < AVCHROMA_LOC_NB; pos++) {
455 if (avcodec_enum_to_chroma_pos(&xout, &yout, pos) == 0 && xout == xpos && yout == ypos)
458 return AVCHROMA_LOC_UNSPECIFIED;
461 int avcodec_fill_audio_frame(AVFrame *frame, int nb_channels,
462 enum AVSampleFormat sample_fmt, const uint8_t *buf,
463 int buf_size, int align)
465 int ch, planar, needed_size, ret = 0;
467 needed_size = av_samples_get_buffer_size(NULL, nb_channels,
468 frame->nb_samples, sample_fmt,
470 if (buf_size < needed_size)
471 return AVERROR(EINVAL);
473 planar = av_sample_fmt_is_planar(sample_fmt);
474 if (planar && nb_channels > AV_NUM_DATA_POINTERS) {
475 if (!(frame->extended_data = av_mallocz_array(nb_channels,
476 sizeof(*frame->extended_data))))
477 return AVERROR(ENOMEM);
479 frame->extended_data = frame->data;
482 if ((ret = av_samples_fill_arrays(frame->extended_data, &frame->linesize[0],
483 (uint8_t *)(intptr_t)buf, nb_channels, frame->nb_samples,
484 sample_fmt, align)) < 0) {
485 if (frame->extended_data != frame->data)
486 av_freep(&frame->extended_data);
489 if (frame->extended_data != frame->data) {
490 for (ch = 0; ch < AV_NUM_DATA_POINTERS; ch++)
491 frame->data[ch] = frame->extended_data[ch];
497 static int update_frame_pool(AVCodecContext *avctx, AVFrame *frame)
499 FramePool *pool = avctx->internal->pool;
502 switch (avctx->codec_type) {
503 case AVMEDIA_TYPE_VIDEO: {
506 int w = frame->width;
507 int h = frame->height;
508 int tmpsize, unaligned;
510 if (pool->format == frame->format &&
511 pool->width == frame->width && pool->height == frame->height)
514 avcodec_align_dimensions2(avctx, &w, &h, pool->stride_align);
517 // NOTE: do not align linesizes individually, this breaks e.g. assumptions
518 // that linesize[0] == 2*linesize[1] in the MPEG-encoder for 4:2:2
519 av_image_fill_linesizes(picture.linesize, avctx->pix_fmt, w);
520 // increase alignment of w for next try (rhs gives the lowest bit set in w)
524 for (i = 0; i < 4; i++)
525 unaligned |= picture.linesize[i] % pool->stride_align[i];
528 tmpsize = av_image_fill_pointers(picture.data, avctx->pix_fmt, h,
529 NULL, picture.linesize);
533 for (i = 0; i < 3 && picture.data[i + 1]; i++)
534 size[i] = picture.data[i + 1] - picture.data[i];
535 size[i] = tmpsize - (picture.data[i] - picture.data[0]);
537 for (i = 0; i < 4; i++) {
538 av_buffer_pool_uninit(&pool->pools[i]);
539 pool->linesize[i] = picture.linesize[i];
541 pool->pools[i] = av_buffer_pool_init(size[i] + 16 + STRIDE_ALIGN - 1,
542 CONFIG_MEMORY_POISONING ?
545 if (!pool->pools[i]) {
546 ret = AVERROR(ENOMEM);
551 pool->format = frame->format;
552 pool->width = frame->width;
553 pool->height = frame->height;
557 case AVMEDIA_TYPE_AUDIO: {
558 int ch = av_frame_get_channels(frame); //av_get_channel_layout_nb_channels(frame->channel_layout);
559 int planar = av_sample_fmt_is_planar(frame->format);
560 int planes = planar ? ch : 1;
562 if (pool->format == frame->format && pool->planes == planes &&
563 pool->channels == ch && frame->nb_samples == pool->samples)
566 av_buffer_pool_uninit(&pool->pools[0]);
567 ret = av_samples_get_buffer_size(&pool->linesize[0], ch,
568 frame->nb_samples, frame->format, 0);
572 pool->pools[0] = av_buffer_pool_init(pool->linesize[0], NULL);
573 if (!pool->pools[0]) {
574 ret = AVERROR(ENOMEM);
578 pool->format = frame->format;
579 pool->planes = planes;
581 pool->samples = frame->nb_samples;
584 default: av_assert0(0);
588 for (i = 0; i < 4; i++)
589 av_buffer_pool_uninit(&pool->pools[i]);
591 pool->planes = pool->channels = pool->samples = 0;
592 pool->width = pool->height = 0;
596 static int audio_get_buffer(AVCodecContext *avctx, AVFrame *frame)
598 FramePool *pool = avctx->internal->pool;
599 int planes = pool->planes;
602 frame->linesize[0] = pool->linesize[0];
604 if (planes > AV_NUM_DATA_POINTERS) {
605 frame->extended_data = av_mallocz_array(planes, sizeof(*frame->extended_data));
606 frame->nb_extended_buf = planes - AV_NUM_DATA_POINTERS;
607 frame->extended_buf = av_mallocz_array(frame->nb_extended_buf,
608 sizeof(*frame->extended_buf));
609 if (!frame->extended_data || !frame->extended_buf) {
610 av_freep(&frame->extended_data);
611 av_freep(&frame->extended_buf);
612 return AVERROR(ENOMEM);
615 frame->extended_data = frame->data;
616 av_assert0(frame->nb_extended_buf == 0);
619 for (i = 0; i < FFMIN(planes, AV_NUM_DATA_POINTERS); i++) {
620 frame->buf[i] = av_buffer_pool_get(pool->pools[0]);
623 frame->extended_data[i] = frame->data[i] = frame->buf[i]->data;
625 for (i = 0; i < frame->nb_extended_buf; i++) {
626 frame->extended_buf[i] = av_buffer_pool_get(pool->pools[0]);
627 if (!frame->extended_buf[i])
629 frame->extended_data[i + AV_NUM_DATA_POINTERS] = frame->extended_buf[i]->data;
632 if (avctx->debug & FF_DEBUG_BUFFERS)
633 av_log(avctx, AV_LOG_DEBUG, "default_get_buffer called on frame %p", frame);
637 av_frame_unref(frame);
638 return AVERROR(ENOMEM);
641 static int video_get_buffer(AVCodecContext *s, AVFrame *pic)
643 FramePool *pool = s->internal->pool;
646 if (pic->data[0] != NULL) {
647 av_log(s, AV_LOG_ERROR, "pic->data[0]!=NULL in avcodec_default_get_buffer\n");
651 memset(pic->data, 0, sizeof(pic->data));
652 pic->extended_data = pic->data;
654 for (i = 0; i < 4 && pool->pools[i]; i++) {
655 pic->linesize[i] = pool->linesize[i];
657 pic->buf[i] = av_buffer_pool_get(pool->pools[i]);
661 pic->data[i] = pic->buf[i]->data;
663 for (; i < AV_NUM_DATA_POINTERS; i++) {
665 pic->linesize[i] = 0;
667 if (pic->data[1] && !pic->data[2])
668 avpriv_set_systematic_pal2((uint32_t *)pic->data[1], s->pix_fmt);
670 if (s->debug & FF_DEBUG_BUFFERS)
671 av_log(s, AV_LOG_DEBUG, "default_get_buffer called on pic %p\n", pic);
676 return AVERROR(ENOMEM);
679 void avpriv_color_frame(AVFrame *frame, const int c[4])
681 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(frame->format);
684 av_assert0(desc->flags & AV_PIX_FMT_FLAG_PLANAR);
686 for (p = 0; p<desc->nb_components; p++) {
687 uint8_t *dst = frame->data[p];
688 int is_chroma = p == 1 || p == 2;
689 int bytes = is_chroma ? FF_CEIL_RSHIFT(frame->width, desc->log2_chroma_w) : frame->width;
690 int height = is_chroma ? FF_CEIL_RSHIFT(frame->height, desc->log2_chroma_h) : frame->height;
691 for (y = 0; y < height; y++) {
692 if (desc->comp[0].depth_minus1 >= 8) {
693 for (x = 0; x<bytes; x++)
694 ((uint16_t*)dst)[x] = c[p];
696 memset(dst, c[p], bytes);
697 dst += frame->linesize[p];
702 int avcodec_default_get_buffer2(AVCodecContext *avctx, AVFrame *frame, int flags)
706 if ((ret = update_frame_pool(avctx, frame)) < 0)
709 #if FF_API_GET_BUFFER
710 FF_DISABLE_DEPRECATION_WARNINGS
711 frame->type = FF_BUFFER_TYPE_INTERNAL;
712 FF_ENABLE_DEPRECATION_WARNINGS
715 switch (avctx->codec_type) {
716 case AVMEDIA_TYPE_VIDEO:
717 return video_get_buffer(avctx, frame);
718 case AVMEDIA_TYPE_AUDIO:
719 return audio_get_buffer(avctx, frame);
725 int ff_init_buffer_info(AVCodecContext *avctx, AVFrame *frame)
727 AVPacket *pkt = avctx->internal->pkt;
731 AVFrameSideData *frame_sd;
733 frame->pkt_pts = pkt->pts;
734 av_frame_set_pkt_pos (frame, pkt->pos);
735 av_frame_set_pkt_duration(frame, pkt->duration);
736 av_frame_set_pkt_size (frame, pkt->size);
738 /* copy the replaygain data to the output frame */
739 packet_sd = av_packet_get_side_data(pkt, AV_PKT_DATA_REPLAYGAIN, &size);
741 frame_sd = av_frame_new_side_data(frame, AV_FRAME_DATA_REPLAYGAIN, size);
743 return AVERROR(ENOMEM);
745 memcpy(frame_sd->data, packet_sd, size);
748 /* copy the displaymatrix to the output frame */
749 packet_sd = av_packet_get_side_data(pkt, AV_PKT_DATA_DISPLAYMATRIX, &size);
751 frame_sd = av_frame_new_side_data(frame, AV_FRAME_DATA_DISPLAYMATRIX, size);
753 return AVERROR(ENOMEM);
755 memcpy(frame_sd->data, packet_sd, size);
758 frame->pkt_pts = AV_NOPTS_VALUE;
759 av_frame_set_pkt_pos (frame, -1);
760 av_frame_set_pkt_duration(frame, 0);
761 av_frame_set_pkt_size (frame, -1);
763 frame->reordered_opaque = avctx->reordered_opaque;
765 if (frame->color_primaries == AVCOL_PRI_UNSPECIFIED)
766 frame->color_primaries = avctx->color_primaries;
767 if (frame->color_trc == AVCOL_TRC_UNSPECIFIED)
768 frame->color_trc = avctx->color_trc;
769 if (av_frame_get_colorspace(frame) == AVCOL_SPC_UNSPECIFIED)
770 av_frame_set_colorspace(frame, avctx->colorspace);
771 if (av_frame_get_color_range(frame) == AVCOL_RANGE_UNSPECIFIED)
772 av_frame_set_color_range(frame, avctx->color_range);
773 if (frame->chroma_location == AVCHROMA_LOC_UNSPECIFIED)
774 frame->chroma_location = avctx->chroma_sample_location;
776 switch (avctx->codec->type) {
777 case AVMEDIA_TYPE_VIDEO:
778 frame->format = avctx->pix_fmt;
779 if (!frame->sample_aspect_ratio.num)
780 frame->sample_aspect_ratio = avctx->sample_aspect_ratio;
782 if (frame->width && frame->height &&
783 av_image_check_sar(frame->width, frame->height,
784 frame->sample_aspect_ratio) < 0) {
785 av_log(avctx, AV_LOG_WARNING, "ignoring invalid SAR: %u/%u\n",
786 frame->sample_aspect_ratio.num,
787 frame->sample_aspect_ratio.den);
788 frame->sample_aspect_ratio = (AVRational){ 0, 1 };
792 case AVMEDIA_TYPE_AUDIO:
793 if (!frame->sample_rate)
794 frame->sample_rate = avctx->sample_rate;
795 if (frame->format < 0)
796 frame->format = avctx->sample_fmt;
797 if (!frame->channel_layout) {
798 if (avctx->channel_layout) {
799 if (av_get_channel_layout_nb_channels(avctx->channel_layout) !=
801 av_log(avctx, AV_LOG_ERROR, "Inconsistent channel "
803 return AVERROR(EINVAL);
806 frame->channel_layout = avctx->channel_layout;
808 if (avctx->channels > FF_SANE_NB_CHANNELS) {
809 av_log(avctx, AV_LOG_ERROR, "Too many channels: %d.\n",
811 return AVERROR(ENOSYS);
815 av_frame_set_channels(frame, avctx->channels);
821 #if FF_API_GET_BUFFER
822 FF_DISABLE_DEPRECATION_WARNINGS
823 int avcodec_default_get_buffer(AVCodecContext *avctx, AVFrame *frame)
825 return avcodec_default_get_buffer2(avctx, frame, 0);
828 typedef struct CompatReleaseBufPriv {
829 AVCodecContext avctx;
831 uint8_t avframe_padding[1024]; // hack to allow linking to a avutil with larger AVFrame
832 } CompatReleaseBufPriv;
834 static void compat_free_buffer(void *opaque, uint8_t *data)
836 CompatReleaseBufPriv *priv = opaque;
837 if (priv->avctx.release_buffer)
838 priv->avctx.release_buffer(&priv->avctx, &priv->frame);
842 static void compat_release_buffer(void *opaque, uint8_t *data)
844 AVBufferRef *buf = opaque;
845 av_buffer_unref(&buf);
847 FF_ENABLE_DEPRECATION_WARNINGS
850 int ff_decode_frame_props(AVCodecContext *avctx, AVFrame *frame)
852 return ff_init_buffer_info(avctx, frame);
855 static int get_buffer_internal(AVCodecContext *avctx, AVFrame *frame, int flags)
857 const AVHWAccel *hwaccel = avctx->hwaccel;
858 int override_dimensions = 1;
861 if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
862 if ((ret = av_image_check_size(avctx->width, avctx->height, 0, avctx)) < 0 || avctx->pix_fmt<0) {
863 av_log(avctx, AV_LOG_ERROR, "video_get_buffer: image parameters invalid\n");
864 return AVERROR(EINVAL);
867 if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
868 if (frame->width <= 0 || frame->height <= 0) {
869 frame->width = FFMAX(avctx->width, FF_CEIL_RSHIFT(avctx->coded_width, avctx->lowres));
870 frame->height = FFMAX(avctx->height, FF_CEIL_RSHIFT(avctx->coded_height, avctx->lowres));
871 override_dimensions = 0;
874 ret = ff_decode_frame_props(avctx, frame);
877 if ((ret = ff_init_buffer_info(avctx, frame)) < 0)
880 if (hwaccel && hwaccel->alloc_frame) {
881 ret = hwaccel->alloc_frame(avctx, frame);
885 #if FF_API_GET_BUFFER
886 FF_DISABLE_DEPRECATION_WARNINGS
888 * Wrap an old get_buffer()-allocated buffer in a bunch of AVBuffers.
889 * We wrap each plane in its own AVBuffer. Each of those has a reference to
890 * a dummy AVBuffer as its private data, unreffing it on free.
891 * When all the planes are freed, the dummy buffer's free callback calls
894 if (avctx->get_buffer) {
895 CompatReleaseBufPriv *priv = NULL;
896 AVBufferRef *dummy_buf = NULL;
899 if (flags & AV_GET_BUFFER_FLAG_REF)
900 frame->reference = 1;
902 ret = avctx->get_buffer(avctx, frame);
906 /* return if the buffers are already set up
907 * this would happen e.g. when a custom get_buffer() calls
908 * avcodec_default_get_buffer
913 priv = av_mallocz(sizeof(*priv));
915 ret = AVERROR(ENOMEM);
918 priv->avctx = *avctx;
919 priv->frame = *frame;
921 dummy_buf = av_buffer_create(NULL, 0, compat_free_buffer, priv, 0);
923 ret = AVERROR(ENOMEM);
927 #define WRAP_PLANE(ref_out, data, data_size) \
929 AVBufferRef *dummy_ref = av_buffer_ref(dummy_buf); \
931 ret = AVERROR(ENOMEM); \
934 ref_out = av_buffer_create(data, data_size, compat_release_buffer, \
937 av_frame_unref(frame); \
938 ret = AVERROR(ENOMEM); \
943 if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
944 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(frame->format);
946 planes = av_pix_fmt_count_planes(frame->format);
947 /* workaround for AVHWAccel plane count of 0, buf[0] is used as
948 check for allocated buffers: make libavcodec happy */
949 if (desc && desc->flags & AV_PIX_FMT_FLAG_HWACCEL)
951 if (!desc || planes <= 0) {
952 ret = AVERROR(EINVAL);
956 for (i = 0; i < planes; i++) {
957 int v_shift = (i == 1 || i == 2) ? desc->log2_chroma_h : 0;
958 int plane_size = (frame->height >> v_shift) * frame->linesize[i];
960 WRAP_PLANE(frame->buf[i], frame->data[i], plane_size);
963 int planar = av_sample_fmt_is_planar(frame->format);
964 planes = planar ? avctx->channels : 1;
966 if (planes > FF_ARRAY_ELEMS(frame->buf)) {
967 frame->nb_extended_buf = planes - FF_ARRAY_ELEMS(frame->buf);
968 frame->extended_buf = av_malloc_array(sizeof(*frame->extended_buf),
969 frame->nb_extended_buf);
970 if (!frame->extended_buf) {
971 ret = AVERROR(ENOMEM);
976 for (i = 0; i < FFMIN(planes, FF_ARRAY_ELEMS(frame->buf)); i++)
977 WRAP_PLANE(frame->buf[i], frame->extended_data[i], frame->linesize[0]);
979 for (i = 0; i < frame->nb_extended_buf; i++)
980 WRAP_PLANE(frame->extended_buf[i],
981 frame->extended_data[i + FF_ARRAY_ELEMS(frame->buf)],
985 av_buffer_unref(&dummy_buf);
988 frame->width = avctx->width;
989 frame->height = avctx->height;
994 avctx->release_buffer(avctx, frame);
996 av_buffer_unref(&dummy_buf);
999 FF_ENABLE_DEPRECATION_WARNINGS
1002 ret = avctx->get_buffer2(avctx, frame, flags);
1005 if (avctx->codec_type == AVMEDIA_TYPE_VIDEO && !override_dimensions) {
1006 frame->width = avctx->width;
1007 frame->height = avctx->height;
1013 int ff_get_buffer(AVCodecContext *avctx, AVFrame *frame, int flags)
1015 int ret = get_buffer_internal(avctx, frame, flags);
1017 av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
1021 static int reget_buffer_internal(AVCodecContext *avctx, AVFrame *frame)
1026 av_assert0(avctx->codec_type == AVMEDIA_TYPE_VIDEO);
1028 if (frame->data[0] && (frame->width != avctx->width || frame->height != avctx->height || frame->format != avctx->pix_fmt)) {
1029 av_log(avctx, AV_LOG_WARNING, "Picture changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s in reget buffer()\n",
1030 frame->width, frame->height, av_get_pix_fmt_name(frame->format), avctx->width, avctx->height, av_get_pix_fmt_name(avctx->pix_fmt));
1031 av_frame_unref(frame);
1034 ff_init_buffer_info(avctx, frame);
1036 if (!frame->data[0])
1037 return ff_get_buffer(avctx, frame, AV_GET_BUFFER_FLAG_REF);
1039 if (av_frame_is_writable(frame))
1040 return ff_decode_frame_props(avctx, frame);
1042 tmp = av_frame_alloc();
1044 return AVERROR(ENOMEM);
1046 av_frame_move_ref(tmp, frame);
1048 ret = ff_get_buffer(avctx, frame, AV_GET_BUFFER_FLAG_REF);
1050 av_frame_free(&tmp);
1054 av_frame_copy(frame, tmp);
1055 av_frame_free(&tmp);
1060 int ff_reget_buffer(AVCodecContext *avctx, AVFrame *frame)
1062 int ret = reget_buffer_internal(avctx, frame);
1064 av_log(avctx, AV_LOG_ERROR, "reget_buffer() failed\n");
1068 #if FF_API_GET_BUFFER
1069 void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic)
1071 av_assert0(s->codec_type == AVMEDIA_TYPE_VIDEO);
1073 av_frame_unref(pic);
1076 int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic)
1083 int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2), void *arg, int *ret, int count, int size)
1087 for (i = 0; i < count; i++) {
1088 int r = func(c, (char *)arg + i * size);
1095 int avcodec_default_execute2(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2, int jobnr, int threadnr), void *arg, int *ret, int count)
1099 for (i = 0; i < count; i++) {
1100 int r = func(c, arg, i, 0);
1107 enum AVPixelFormat avpriv_find_pix_fmt(const PixelFormatTag *tags,
1108 unsigned int fourcc)
1110 while (tags->pix_fmt >= 0) {
1111 if (tags->fourcc == fourcc)
1112 return tags->pix_fmt;
1115 return AV_PIX_FMT_NONE;
1118 static int is_hwaccel_pix_fmt(enum AVPixelFormat pix_fmt)
1120 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
1121 return desc->flags & AV_PIX_FMT_FLAG_HWACCEL;
1124 enum AVPixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum AVPixelFormat *fmt)
1126 while (*fmt != AV_PIX_FMT_NONE && is_hwaccel_pix_fmt(*fmt))
1131 static AVHWAccel *find_hwaccel(enum AVCodecID codec_id,
1132 enum AVPixelFormat pix_fmt)
1134 AVHWAccel *hwaccel = NULL;
1136 while ((hwaccel = av_hwaccel_next(hwaccel)))
1137 if (hwaccel->id == codec_id
1138 && hwaccel->pix_fmt == pix_fmt)
1144 int ff_get_format(AVCodecContext *avctx, const enum AVPixelFormat *fmt)
1146 const AVPixFmtDescriptor *desc;
1147 enum AVPixelFormat ret = avctx->get_format(avctx, fmt);
1149 desc = av_pix_fmt_desc_get(ret);
1151 return AV_PIX_FMT_NONE;
1153 if (avctx->hwaccel && avctx->hwaccel->uninit)
1154 avctx->hwaccel->uninit(avctx);
1155 av_freep(&avctx->internal->hwaccel_priv_data);
1156 avctx->hwaccel = NULL;
1158 if (desc->flags & AV_PIX_FMT_FLAG_HWACCEL &&
1159 !(avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU)) {
1163 hwaccel = find_hwaccel(avctx->codec_id, ret);
1165 av_log(avctx, AV_LOG_ERROR,
1166 "Could not find an AVHWAccel for the pixel format: %s",
1168 return AV_PIX_FMT_NONE;
1171 if (hwaccel->priv_data_size) {
1172 avctx->internal->hwaccel_priv_data = av_mallocz(hwaccel->priv_data_size);
1173 if (!avctx->internal->hwaccel_priv_data)
1174 return AV_PIX_FMT_NONE;
1177 if (hwaccel->init) {
1178 err = hwaccel->init(avctx);
1180 av_freep(&avctx->internal->hwaccel_priv_data);
1181 return AV_PIX_FMT_NONE;
1184 avctx->hwaccel = hwaccel;
1190 #if FF_API_AVFRAME_LAVC
1191 void avcodec_get_frame_defaults(AVFrame *frame)
1193 #if LIBAVCODEC_VERSION_MAJOR >= 55
1194 // extended_data should explicitly be freed when needed, this code is unsafe currently
1195 // also this is not compatible to the <55 ABI/API
1196 if (frame->extended_data != frame->data && 0)
1197 av_freep(&frame->extended_data);
1200 memset(frame, 0, sizeof(AVFrame));
1201 av_frame_unref(frame);
1204 AVFrame *avcodec_alloc_frame(void)
1206 return av_frame_alloc();
1209 void avcodec_free_frame(AVFrame **frame)
1211 av_frame_free(frame);
1215 MAKE_ACCESSORS(AVCodecContext, codec, AVRational, pkt_timebase)
1216 MAKE_ACCESSORS(AVCodecContext, codec, const AVCodecDescriptor *, codec_descriptor)
1217 MAKE_ACCESSORS(AVCodecContext, codec, int, lowres)
1218 MAKE_ACCESSORS(AVCodecContext, codec, int, seek_preroll)
1219 MAKE_ACCESSORS(AVCodecContext, codec, uint16_t*, chroma_intra_matrix)
1221 int av_codec_get_max_lowres(const AVCodec *codec)
1223 return codec->max_lowres;
1226 static void avcodec_get_subtitle_defaults(AVSubtitle *sub)
1228 memset(sub, 0, sizeof(*sub));
1229 sub->pts = AV_NOPTS_VALUE;
1232 static int get_bit_rate(AVCodecContext *ctx)
1235 int bits_per_sample;
1237 switch (ctx->codec_type) {
1238 case AVMEDIA_TYPE_VIDEO:
1239 case AVMEDIA_TYPE_DATA:
1240 case AVMEDIA_TYPE_SUBTITLE:
1241 case AVMEDIA_TYPE_ATTACHMENT:
1242 bit_rate = ctx->bit_rate;
1244 case AVMEDIA_TYPE_AUDIO:
1245 bits_per_sample = av_get_bits_per_sample(ctx->codec_id);
1246 bit_rate = bits_per_sample ? ctx->sample_rate * ctx->channels * bits_per_sample : ctx->bit_rate;
1255 int attribute_align_arg ff_codec_open2_recursive(AVCodecContext *avctx, const AVCodec *codec, AVDictionary **options)
1259 ff_unlock_avcodec();
1261 ret = avcodec_open2(avctx, codec, options);
1263 ff_lock_avcodec(avctx);
1267 int attribute_align_arg avcodec_open2(AVCodecContext *avctx, const AVCodec *codec, AVDictionary **options)
1270 AVDictionary *tmp = NULL;
1272 if (avcodec_is_open(avctx))
1275 if ((!codec && !avctx->codec)) {
1276 av_log(avctx, AV_LOG_ERROR, "No codec provided to avcodec_open2()\n");
1277 return AVERROR(EINVAL);
1279 if ((codec && avctx->codec && codec != avctx->codec)) {
1280 av_log(avctx, AV_LOG_ERROR, "This AVCodecContext was allocated for %s, "
1281 "but %s passed to avcodec_open2()\n", avctx->codec->name, codec->name);
1282 return AVERROR(EINVAL);
1285 codec = avctx->codec;
1287 if (avctx->extradata_size < 0 || avctx->extradata_size >= FF_MAX_EXTRADATA_SIZE)
1288 return AVERROR(EINVAL);
1291 av_dict_copy(&tmp, *options, 0);
1293 ret = ff_lock_avcodec(avctx);
1297 avctx->internal = av_mallocz(sizeof(AVCodecInternal));
1298 if (!avctx->internal) {
1299 ret = AVERROR(ENOMEM);
1303 avctx->internal->pool = av_mallocz(sizeof(*avctx->internal->pool));
1304 if (!avctx->internal->pool) {
1305 ret = AVERROR(ENOMEM);
1309 avctx->internal->to_free = av_frame_alloc();
1310 if (!avctx->internal->to_free) {
1311 ret = AVERROR(ENOMEM);
1315 if (codec->priv_data_size > 0) {
1316 if (!avctx->priv_data) {
1317 avctx->priv_data = av_mallocz(codec->priv_data_size);
1318 if (!avctx->priv_data) {
1319 ret = AVERROR(ENOMEM);
1322 if (codec->priv_class) {
1323 *(const AVClass **)avctx->priv_data = codec->priv_class;
1324 av_opt_set_defaults(avctx->priv_data);
1327 if (codec->priv_class && (ret = av_opt_set_dict(avctx->priv_data, &tmp)) < 0)
1330 avctx->priv_data = NULL;
1332 if ((ret = av_opt_set_dict(avctx, &tmp)) < 0)
1335 // only call ff_set_dimensions() for non H.264/VP6F codecs so as not to overwrite previously setup dimensions
1336 if (!(avctx->coded_width && avctx->coded_height && avctx->width && avctx->height &&
1337 (avctx->codec_id == AV_CODEC_ID_H264 || avctx->codec_id == AV_CODEC_ID_VP6F))) {
1338 if (avctx->coded_width && avctx->coded_height)
1339 ret = ff_set_dimensions(avctx, avctx->coded_width, avctx->coded_height);
1340 else if (avctx->width && avctx->height)
1341 ret = ff_set_dimensions(avctx, avctx->width, avctx->height);
1346 if ((avctx->coded_width || avctx->coded_height || avctx->width || avctx->height)
1347 && ( av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx) < 0
1348 || av_image_check_size(avctx->width, avctx->height, 0, avctx) < 0)) {
1349 av_log(avctx, AV_LOG_WARNING, "Ignoring invalid width/height values\n");
1350 ff_set_dimensions(avctx, 0, 0);
1353 if (avctx->width > 0 && avctx->height > 0) {
1354 if (av_image_check_sar(avctx->width, avctx->height,
1355 avctx->sample_aspect_ratio) < 0) {
1356 av_log(avctx, AV_LOG_WARNING, "ignoring invalid SAR: %u/%u\n",
1357 avctx->sample_aspect_ratio.num,
1358 avctx->sample_aspect_ratio.den);
1359 avctx->sample_aspect_ratio = (AVRational){ 0, 1 };
1363 /* if the decoder init function was already called previously,
1364 * free the already allocated subtitle_header before overwriting it */
1365 if (av_codec_is_decoder(codec))
1366 av_freep(&avctx->subtitle_header);
1368 if (avctx->channels > FF_SANE_NB_CHANNELS) {
1369 ret = AVERROR(EINVAL);
1373 avctx->codec = codec;
1374 if ((avctx->codec_type == AVMEDIA_TYPE_UNKNOWN || avctx->codec_type == codec->type) &&
1375 avctx->codec_id == AV_CODEC_ID_NONE) {
1376 avctx->codec_type = codec->type;
1377 avctx->codec_id = codec->id;
1379 if (avctx->codec_id != codec->id || (avctx->codec_type != codec->type
1380 && avctx->codec_type != AVMEDIA_TYPE_ATTACHMENT)) {
1381 av_log(avctx, AV_LOG_ERROR, "Codec type or id mismatches\n");
1382 ret = AVERROR(EINVAL);
1385 avctx->frame_number = 0;
1386 avctx->codec_descriptor = avcodec_descriptor_get(avctx->codec_id);
1388 if (avctx->codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
1389 avctx->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
1390 const char *codec_string = av_codec_is_encoder(codec) ? "encoder" : "decoder";
1392 av_log(avctx, AV_LOG_ERROR,
1393 "The %s '%s' is experimental but experimental codecs are not enabled, "
1394 "add '-strict %d' if you want to use it.\n",
1395 codec_string, codec->name, FF_COMPLIANCE_EXPERIMENTAL);
1396 codec2 = av_codec_is_encoder(codec) ? avcodec_find_encoder(codec->id) : avcodec_find_decoder(codec->id);
1397 if (!(codec2->capabilities & CODEC_CAP_EXPERIMENTAL))
1398 av_log(avctx, AV_LOG_ERROR, "Alternatively use the non experimental %s '%s'.\n",
1399 codec_string, codec2->name);
1400 ret = AVERROR_EXPERIMENTAL;
1404 if (avctx->codec_type == AVMEDIA_TYPE_AUDIO &&
1405 (!avctx->time_base.num || !avctx->time_base.den)) {
1406 avctx->time_base.num = 1;
1407 avctx->time_base.den = avctx->sample_rate;
1411 av_log(avctx, AV_LOG_WARNING, "Warning: not compiled with thread support, using thread emulation\n");
1413 if (CONFIG_FRAME_THREAD_ENCODER) {
1414 ff_unlock_avcodec(); //we will instanciate a few encoders thus kick the counter to prevent false detection of a problem
1415 ret = ff_frame_thread_encoder_init(avctx, options ? *options : NULL);
1416 ff_lock_avcodec(avctx);
1422 && !(avctx->internal->frame_thread_encoder && (avctx->active_thread_type&FF_THREAD_FRAME))) {
1423 ret = ff_thread_init(avctx);
1428 if (!HAVE_THREADS && !(codec->capabilities & CODEC_CAP_AUTO_THREADS))
1429 avctx->thread_count = 1;
1431 if (avctx->codec->max_lowres < avctx->lowres || avctx->lowres < 0) {
1432 av_log(avctx, AV_LOG_ERROR, "The maximum value for lowres supported by the decoder is %d\n",
1433 avctx->codec->max_lowres);
1434 ret = AVERROR(EINVAL);
1438 if (av_codec_is_encoder(avctx->codec)) {
1440 if (avctx->codec->sample_fmts) {
1441 for (i = 0; avctx->codec->sample_fmts[i] != AV_SAMPLE_FMT_NONE; i++) {
1442 if (avctx->sample_fmt == avctx->codec->sample_fmts[i])
1444 if (avctx->channels == 1 &&
1445 av_get_planar_sample_fmt(avctx->sample_fmt) ==
1446 av_get_planar_sample_fmt(avctx->codec->sample_fmts[i])) {
1447 avctx->sample_fmt = avctx->codec->sample_fmts[i];
1451 if (avctx->codec->sample_fmts[i] == AV_SAMPLE_FMT_NONE) {
1453 snprintf(buf, sizeof(buf), "%d", avctx->sample_fmt);
1454 av_log(avctx, AV_LOG_ERROR, "Specified sample format %s is invalid or not supported\n",
1455 (char *)av_x_if_null(av_get_sample_fmt_name(avctx->sample_fmt), buf));
1456 ret = AVERROR(EINVAL);
1460 if (avctx->codec->pix_fmts) {
1461 for (i = 0; avctx->codec->pix_fmts[i] != AV_PIX_FMT_NONE; i++)
1462 if (avctx->pix_fmt == avctx->codec->pix_fmts[i])
1464 if (avctx->codec->pix_fmts[i] == AV_PIX_FMT_NONE
1465 && !((avctx->codec_id == AV_CODEC_ID_MJPEG || avctx->codec_id == AV_CODEC_ID_LJPEG)
1466 && avctx->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL)) {
1468 snprintf(buf, sizeof(buf), "%d", avctx->pix_fmt);
1469 av_log(avctx, AV_LOG_ERROR, "Specified pixel format %s is invalid or not supported\n",
1470 (char *)av_x_if_null(av_get_pix_fmt_name(avctx->pix_fmt), buf));
1471 ret = AVERROR(EINVAL);
1475 if (avctx->codec->supported_samplerates) {
1476 for (i = 0; avctx->codec->supported_samplerates[i] != 0; i++)
1477 if (avctx->sample_rate == avctx->codec->supported_samplerates[i])
1479 if (avctx->codec->supported_samplerates[i] == 0) {
1480 av_log(avctx, AV_LOG_ERROR, "Specified sample rate %d is not supported\n",
1481 avctx->sample_rate);
1482 ret = AVERROR(EINVAL);
1486 if (avctx->codec->channel_layouts) {
1487 if (!avctx->channel_layout) {
1488 av_log(avctx, AV_LOG_WARNING, "Channel layout not specified\n");
1490 for (i = 0; avctx->codec->channel_layouts[i] != 0; i++)
1491 if (avctx->channel_layout == avctx->codec->channel_layouts[i])
1493 if (avctx->codec->channel_layouts[i] == 0) {
1495 av_get_channel_layout_string(buf, sizeof(buf), -1, avctx->channel_layout);
1496 av_log(avctx, AV_LOG_ERROR, "Specified channel layout '%s' is not supported\n", buf);
1497 ret = AVERROR(EINVAL);
1502 if (avctx->channel_layout && avctx->channels) {
1503 int channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
1504 if (channels != avctx->channels) {
1506 av_get_channel_layout_string(buf, sizeof(buf), -1, avctx->channel_layout);
1507 av_log(avctx, AV_LOG_ERROR,
1508 "Channel layout '%s' with %d channels does not match number of specified channels %d\n",
1509 buf, channels, avctx->channels);
1510 ret = AVERROR(EINVAL);
1513 } else if (avctx->channel_layout) {
1514 avctx->channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
1516 if(avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
1517 if (avctx->width <= 0 || avctx->height <= 0) {
1518 av_log(avctx, AV_LOG_ERROR, "dimensions not set\n");
1519 ret = AVERROR(EINVAL);
1523 if ( (avctx->codec_type == AVMEDIA_TYPE_VIDEO || avctx->codec_type == AVMEDIA_TYPE_AUDIO)
1524 && avctx->bit_rate>0 && avctx->bit_rate<1000) {
1525 av_log(avctx, AV_LOG_WARNING, "Bitrate %d is extremely low, maybe you mean %dk\n", avctx->bit_rate, avctx->bit_rate);
1528 if (!avctx->rc_initial_buffer_occupancy)
1529 avctx->rc_initial_buffer_occupancy = avctx->rc_buffer_size * 3 / 4;
1532 avctx->pts_correction_num_faulty_pts =
1533 avctx->pts_correction_num_faulty_dts = 0;
1534 avctx->pts_correction_last_pts =
1535 avctx->pts_correction_last_dts = INT64_MIN;
1537 if ( avctx->codec->init && (!(avctx->active_thread_type&FF_THREAD_FRAME)
1538 || avctx->internal->frame_thread_encoder)) {
1539 ret = avctx->codec->init(avctx);
1547 if (av_codec_is_decoder(avctx->codec)) {
1548 if (!avctx->bit_rate)
1549 avctx->bit_rate = get_bit_rate(avctx);
1550 /* validate channel layout from the decoder */
1551 if (avctx->channel_layout) {
1552 int channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
1553 if (!avctx->channels)
1554 avctx->channels = channels;
1555 else if (channels != avctx->channels) {
1557 av_get_channel_layout_string(buf, sizeof(buf), -1, avctx->channel_layout);
1558 av_log(avctx, AV_LOG_WARNING,
1559 "Channel layout '%s' with %d channels does not match specified number of channels %d: "
1560 "ignoring specified channel layout\n",
1561 buf, channels, avctx->channels);
1562 avctx->channel_layout = 0;
1565 if (avctx->channels && avctx->channels < 0 ||
1566 avctx->channels > FF_SANE_NB_CHANNELS) {
1567 ret = AVERROR(EINVAL);
1570 if (avctx->sub_charenc) {
1571 if (avctx->codec_type != AVMEDIA_TYPE_SUBTITLE) {
1572 av_log(avctx, AV_LOG_ERROR, "Character encoding is only "
1573 "supported with subtitles codecs\n");
1574 ret = AVERROR(EINVAL);
1576 } else if (avctx->codec_descriptor->props & AV_CODEC_PROP_BITMAP_SUB) {
1577 av_log(avctx, AV_LOG_WARNING, "Codec '%s' is bitmap-based, "
1578 "subtitles character encoding will be ignored\n",
1579 avctx->codec_descriptor->name);
1580 avctx->sub_charenc_mode = FF_SUB_CHARENC_MODE_DO_NOTHING;
1582 /* input character encoding is set for a text based subtitle
1583 * codec at this point */
1584 if (avctx->sub_charenc_mode == FF_SUB_CHARENC_MODE_AUTOMATIC)
1585 avctx->sub_charenc_mode = FF_SUB_CHARENC_MODE_PRE_DECODER;
1587 if (avctx->sub_charenc_mode == FF_SUB_CHARENC_MODE_PRE_DECODER) {
1589 iconv_t cd = iconv_open("UTF-8", avctx->sub_charenc);
1590 if (cd == (iconv_t)-1) {
1591 av_log(avctx, AV_LOG_ERROR, "Unable to open iconv context "
1592 "with input character encoding \"%s\"\n", avctx->sub_charenc);
1593 ret = AVERROR(errno);
1598 av_log(avctx, AV_LOG_ERROR, "Character encoding subtitles "
1599 "conversion needs a libavcodec built with iconv support "
1600 "for this codec\n");
1601 ret = AVERROR(ENOSYS);
1609 ff_unlock_avcodec();
1611 av_dict_free(options);
1618 av_freep(&avctx->priv_data);
1619 if (avctx->internal) {
1620 av_frame_free(&avctx->internal->to_free);
1621 av_freep(&avctx->internal->pool);
1623 av_freep(&avctx->internal);
1624 avctx->codec = NULL;
1628 int ff_alloc_packet2(AVCodecContext *avctx, AVPacket *avpkt, int64_t size)
1630 if (avpkt->size < 0) {
1631 av_log(avctx, AV_LOG_ERROR, "Invalid negative user packet size %d\n", avpkt->size);
1632 return AVERROR(EINVAL);
1634 if (size < 0 || size > INT_MAX - FF_INPUT_BUFFER_PADDING_SIZE) {
1635 av_log(avctx, AV_LOG_ERROR, "Invalid minimum required packet size %"PRId64" (max allowed is %d)\n",
1636 size, INT_MAX - FF_INPUT_BUFFER_PADDING_SIZE);
1637 return AVERROR(EINVAL);
1641 av_assert0(!avpkt->data || avpkt->data != avctx->internal->byte_buffer);
1642 if (!avpkt->data || avpkt->size < size) {
1643 av_fast_padded_malloc(&avctx->internal->byte_buffer, &avctx->internal->byte_buffer_size, size);
1644 avpkt->data = avctx->internal->byte_buffer;
1645 avpkt->size = avctx->internal->byte_buffer_size;
1646 #if FF_API_DESTRUCT_PACKET
1647 FF_DISABLE_DEPRECATION_WARNINGS
1648 avpkt->destruct = NULL;
1649 FF_ENABLE_DEPRECATION_WARNINGS
1655 AVBufferRef *buf = avpkt->buf;
1656 #if FF_API_DESTRUCT_PACKET
1657 FF_DISABLE_DEPRECATION_WARNINGS
1658 void *destruct = avpkt->destruct;
1659 FF_ENABLE_DEPRECATION_WARNINGS
1662 if (avpkt->size < size) {
1663 av_log(avctx, AV_LOG_ERROR, "User packet is too small (%d < %"PRId64")\n", avpkt->size, size);
1664 return AVERROR(EINVAL);
1667 av_init_packet(avpkt);
1668 #if FF_API_DESTRUCT_PACKET
1669 FF_DISABLE_DEPRECATION_WARNINGS
1670 avpkt->destruct = destruct;
1671 FF_ENABLE_DEPRECATION_WARNINGS
1677 int ret = av_new_packet(avpkt, size);
1679 av_log(avctx, AV_LOG_ERROR, "Failed to allocate packet of size %"PRId64"\n", size);
1684 int ff_alloc_packet(AVPacket *avpkt, int size)
1686 return ff_alloc_packet2(NULL, avpkt, size);
1690 * Pad last frame with silence.
1692 static int pad_last_frame(AVCodecContext *s, AVFrame **dst, const AVFrame *src)
1694 AVFrame *frame = NULL;
1697 if (!(frame = av_frame_alloc()))
1698 return AVERROR(ENOMEM);
1700 frame->format = src->format;
1701 frame->channel_layout = src->channel_layout;
1702 av_frame_set_channels(frame, av_frame_get_channels(src));
1703 frame->nb_samples = s->frame_size;
1704 ret = av_frame_get_buffer(frame, 32);
1708 ret = av_frame_copy_props(frame, src);
1712 if ((ret = av_samples_copy(frame->extended_data, src->extended_data, 0, 0,
1713 src->nb_samples, s->channels, s->sample_fmt)) < 0)
1715 if ((ret = av_samples_set_silence(frame->extended_data, src->nb_samples,
1716 frame->nb_samples - src->nb_samples,
1717 s->channels, s->sample_fmt)) < 0)
1725 av_frame_free(&frame);
1729 int attribute_align_arg avcodec_encode_audio2(AVCodecContext *avctx,
1731 const AVFrame *frame,
1732 int *got_packet_ptr)
1734 AVFrame *extended_frame = NULL;
1735 AVFrame *padded_frame = NULL;
1737 AVPacket user_pkt = *avpkt;
1738 int needs_realloc = !user_pkt.data;
1740 *got_packet_ptr = 0;
1742 if (!(avctx->codec->capabilities & CODEC_CAP_DELAY) && !frame) {
1743 av_free_packet(avpkt);
1744 av_init_packet(avpkt);
1748 /* ensure that extended_data is properly set */
1749 if (frame && !frame->extended_data) {
1750 if (av_sample_fmt_is_planar(avctx->sample_fmt) &&
1751 avctx->channels > AV_NUM_DATA_POINTERS) {
1752 av_log(avctx, AV_LOG_ERROR, "Encoding to a planar sample format, "
1753 "with more than %d channels, but extended_data is not set.\n",
1754 AV_NUM_DATA_POINTERS);
1755 return AVERROR(EINVAL);
1757 av_log(avctx, AV_LOG_WARNING, "extended_data is not set.\n");
1759 extended_frame = av_frame_alloc();
1760 if (!extended_frame)
1761 return AVERROR(ENOMEM);
1763 memcpy(extended_frame, frame, sizeof(AVFrame));
1764 extended_frame->extended_data = extended_frame->data;
1765 frame = extended_frame;
1768 /* check for valid frame size */
1770 if (avctx->codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME) {
1771 if (frame->nb_samples > avctx->frame_size) {
1772 av_log(avctx, AV_LOG_ERROR, "more samples than frame size (avcodec_encode_audio2)\n");
1773 ret = AVERROR(EINVAL);
1776 } else if (!(avctx->codec->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE)) {
1777 if (frame->nb_samples < avctx->frame_size &&
1778 !avctx->internal->last_audio_frame) {
1779 ret = pad_last_frame(avctx, &padded_frame, frame);
1783 frame = padded_frame;
1784 avctx->internal->last_audio_frame = 1;
1787 if (frame->nb_samples != avctx->frame_size) {
1788 av_log(avctx, AV_LOG_ERROR, "nb_samples (%d) != frame_size (%d) (avcodec_encode_audio2)\n", frame->nb_samples, avctx->frame_size);
1789 ret = AVERROR(EINVAL);
1795 ret = avctx->codec->encode2(avctx, avpkt, frame, got_packet_ptr);
1797 if (*got_packet_ptr) {
1798 if (!(avctx->codec->capabilities & CODEC_CAP_DELAY)) {
1799 if (avpkt->pts == AV_NOPTS_VALUE)
1800 avpkt->pts = frame->pts;
1801 if (!avpkt->duration)
1802 avpkt->duration = ff_samples_to_time_base(avctx,
1805 avpkt->dts = avpkt->pts;
1810 if (avpkt->data && avpkt->data == avctx->internal->byte_buffer) {
1812 if (user_pkt.data) {
1813 if (user_pkt.size >= avpkt->size) {
1814 memcpy(user_pkt.data, avpkt->data, avpkt->size);
1816 av_log(avctx, AV_LOG_ERROR, "Provided packet is too small, needs to be %d\n", avpkt->size);
1817 avpkt->size = user_pkt.size;
1820 avpkt->buf = user_pkt.buf;
1821 avpkt->data = user_pkt.data;
1822 #if FF_API_DESTRUCT_PACKET
1823 FF_DISABLE_DEPRECATION_WARNINGS
1824 avpkt->destruct = user_pkt.destruct;
1825 FF_ENABLE_DEPRECATION_WARNINGS
1828 if (av_dup_packet(avpkt) < 0) {
1829 ret = AVERROR(ENOMEM);
1835 if (needs_realloc && avpkt->data) {
1836 ret = av_buffer_realloc(&avpkt->buf, avpkt->size + FF_INPUT_BUFFER_PADDING_SIZE);
1838 avpkt->data = avpkt->buf->data;
1841 avctx->frame_number++;
1844 if (ret < 0 || !*got_packet_ptr) {
1845 av_free_packet(avpkt);
1846 av_init_packet(avpkt);
1850 /* NOTE: if we add any audio encoders which output non-keyframe packets,
1851 * this needs to be moved to the encoders, but for now we can do it
1852 * here to simplify things */
1853 avpkt->flags |= AV_PKT_FLAG_KEY;
1856 av_frame_free(&padded_frame);
1857 av_free(extended_frame);
1862 #if FF_API_OLD_ENCODE_AUDIO
1863 int attribute_align_arg avcodec_encode_audio(AVCodecContext *avctx,
1864 uint8_t *buf, int buf_size,
1865 const short *samples)
1869 int ret, samples_size, got_packet;
1871 av_init_packet(&pkt);
1873 pkt.size = buf_size;
1876 frame = av_frame_alloc();
1878 return AVERROR(ENOMEM);
1880 if (avctx->frame_size) {
1881 frame->nb_samples = avctx->frame_size;
1883 /* if frame_size is not set, the number of samples must be
1884 * calculated from the buffer size */
1886 if (!av_get_bits_per_sample(avctx->codec_id)) {
1887 av_log(avctx, AV_LOG_ERROR, "avcodec_encode_audio() does not "
1888 "support this codec\n");
1889 av_frame_free(&frame);
1890 return AVERROR(EINVAL);
1892 nb_samples = (int64_t)buf_size * 8 /
1893 (av_get_bits_per_sample(avctx->codec_id) *
1895 if (nb_samples >= INT_MAX) {
1896 av_frame_free(&frame);
1897 return AVERROR(EINVAL);
1899 frame->nb_samples = nb_samples;
1902 /* it is assumed that the samples buffer is large enough based on the
1903 * relevant parameters */
1904 samples_size = av_samples_get_buffer_size(NULL, avctx->channels,
1906 avctx->sample_fmt, 1);
1907 if ((ret = avcodec_fill_audio_frame(frame, avctx->channels,
1909 (const uint8_t *)samples,
1910 samples_size, 1)) < 0) {
1911 av_frame_free(&frame);
1915 /* fabricate frame pts from sample count.
1916 * this is needed because the avcodec_encode_audio() API does not have
1917 * a way for the user to provide pts */
1918 if (avctx->sample_rate && avctx->time_base.num)
1919 frame->pts = ff_samples_to_time_base(avctx,
1920 avctx->internal->sample_count);
1922 frame->pts = AV_NOPTS_VALUE;
1923 avctx->internal->sample_count += frame->nb_samples;
1929 ret = avcodec_encode_audio2(avctx, &pkt, frame, &got_packet);
1930 if (!ret && got_packet && avctx->coded_frame) {
1931 avctx->coded_frame->pts = pkt.pts;
1932 avctx->coded_frame->key_frame = !!(pkt.flags & AV_PKT_FLAG_KEY);
1934 /* free any side data since we cannot return it */
1935 av_packet_free_side_data(&pkt);
1937 if (frame && frame->extended_data != frame->data)
1938 av_freep(&frame->extended_data);
1940 av_frame_free(&frame);
1941 return ret ? ret : pkt.size;
1946 #if FF_API_OLD_ENCODE_VIDEO
1947 int attribute_align_arg avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
1948 const AVFrame *pict)
1951 int ret, got_packet = 0;
1953 if (buf_size < FF_MIN_BUFFER_SIZE) {
1954 av_log(avctx, AV_LOG_ERROR, "buffer smaller than minimum size\n");
1958 av_init_packet(&pkt);
1960 pkt.size = buf_size;
1962 ret = avcodec_encode_video2(avctx, &pkt, pict, &got_packet);
1963 if (!ret && got_packet && avctx->coded_frame) {
1964 avctx->coded_frame->pts = pkt.pts;
1965 avctx->coded_frame->key_frame = !!(pkt.flags & AV_PKT_FLAG_KEY);
1968 /* free any side data since we cannot return it */
1969 if (pkt.side_data_elems > 0) {
1971 for (i = 0; i < pkt.side_data_elems; i++)
1972 av_free(pkt.side_data[i].data);
1973 av_freep(&pkt.side_data);
1974 pkt.side_data_elems = 0;
1977 return ret ? ret : pkt.size;
1982 int attribute_align_arg avcodec_encode_video2(AVCodecContext *avctx,
1984 const AVFrame *frame,
1985 int *got_packet_ptr)
1988 AVPacket user_pkt = *avpkt;
1989 int needs_realloc = !user_pkt.data;
1991 *got_packet_ptr = 0;
1993 if(CONFIG_FRAME_THREAD_ENCODER &&
1994 avctx->internal->frame_thread_encoder && (avctx->active_thread_type&FF_THREAD_FRAME))
1995 return ff_thread_video_encode_frame(avctx, avpkt, frame, got_packet_ptr);
1997 if ((avctx->flags&CODEC_FLAG_PASS1) && avctx->stats_out)
1998 avctx->stats_out[0] = '\0';
2000 if (!(avctx->codec->capabilities & CODEC_CAP_DELAY) && !frame) {
2001 av_free_packet(avpkt);
2002 av_init_packet(avpkt);
2007 if (av_image_check_size(avctx->width, avctx->height, 0, avctx))
2008 return AVERROR(EINVAL);
2010 av_assert0(avctx->codec->encode2);
2012 ret = avctx->codec->encode2(avctx, avpkt, frame, got_packet_ptr);
2013 av_assert0(ret <= 0);
2015 if (avpkt->data && avpkt->data == avctx->internal->byte_buffer) {
2017 if (user_pkt.data) {
2018 if (user_pkt.size >= avpkt->size) {
2019 memcpy(user_pkt.data, avpkt->data, avpkt->size);
2021 av_log(avctx, AV_LOG_ERROR, "Provided packet is too small, needs to be %d\n", avpkt->size);
2022 avpkt->size = user_pkt.size;
2025 avpkt->buf = user_pkt.buf;
2026 avpkt->data = user_pkt.data;
2027 #if FF_API_DESTRUCT_PACKET
2028 FF_DISABLE_DEPRECATION_WARNINGS
2029 avpkt->destruct = user_pkt.destruct;
2030 FF_ENABLE_DEPRECATION_WARNINGS
2033 if (av_dup_packet(avpkt) < 0) {
2034 ret = AVERROR(ENOMEM);
2040 if (!*got_packet_ptr)
2042 else if (!(avctx->codec->capabilities & CODEC_CAP_DELAY))
2043 avpkt->pts = avpkt->dts = frame->pts;
2045 if (needs_realloc && avpkt->data) {
2046 ret = av_buffer_realloc(&avpkt->buf, avpkt->size + FF_INPUT_BUFFER_PADDING_SIZE);
2048 avpkt->data = avpkt->buf->data;
2051 avctx->frame_number++;
2054 if (ret < 0 || !*got_packet_ptr)
2055 av_free_packet(avpkt);
2057 av_packet_merge_side_data(avpkt);
2063 int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size,
2064 const AVSubtitle *sub)
2067 if (sub->start_display_time) {
2068 av_log(avctx, AV_LOG_ERROR, "start_display_time must be 0.\n");
2072 ret = avctx->codec->encode_sub(avctx, buf, buf_size, sub);
2073 avctx->frame_number++;
2078 * Attempt to guess proper monotonic timestamps for decoded video frames
2079 * which might have incorrect times. Input timestamps may wrap around, in
2080 * which case the output will as well.
2082 * @param pts the pts field of the decoded AVPacket, as passed through
2084 * @param dts the dts field of the decoded AVPacket
2085 * @return one of the input values, may be AV_NOPTS_VALUE
2087 static int64_t guess_correct_pts(AVCodecContext *ctx,
2088 int64_t reordered_pts, int64_t dts)
2090 int64_t pts = AV_NOPTS_VALUE;
2092 if (dts != AV_NOPTS_VALUE) {
2093 ctx->pts_correction_num_faulty_dts += dts <= ctx->pts_correction_last_dts;
2094 ctx->pts_correction_last_dts = dts;
2095 } else if (reordered_pts != AV_NOPTS_VALUE)
2096 ctx->pts_correction_last_dts = reordered_pts;
2098 if (reordered_pts != AV_NOPTS_VALUE) {
2099 ctx->pts_correction_num_faulty_pts += reordered_pts <= ctx->pts_correction_last_pts;
2100 ctx->pts_correction_last_pts = reordered_pts;
2101 } else if(dts != AV_NOPTS_VALUE)
2102 ctx->pts_correction_last_pts = dts;
2104 if ((ctx->pts_correction_num_faulty_pts<=ctx->pts_correction_num_faulty_dts || dts == AV_NOPTS_VALUE)
2105 && reordered_pts != AV_NOPTS_VALUE)
2106 pts = reordered_pts;
2113 static int apply_param_change(AVCodecContext *avctx, AVPacket *avpkt)
2116 const uint8_t *data;
2119 data = av_packet_get_side_data(avpkt, AV_PKT_DATA_PARAM_CHANGE, &size);
2123 if (!(avctx->codec->capabilities & CODEC_CAP_PARAM_CHANGE)) {
2124 av_log(avctx, AV_LOG_ERROR, "This decoder does not support parameter "
2125 "changes, but PARAM_CHANGE side data was sent to it.\n");
2126 return AVERROR(EINVAL);
2132 flags = bytestream_get_le32(&data);
2135 if (flags & AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_COUNT) {
2138 avctx->channels = bytestream_get_le32(&data);
2141 if (flags & AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_LAYOUT) {
2144 avctx->channel_layout = bytestream_get_le64(&data);
2147 if (flags & AV_SIDE_DATA_PARAM_CHANGE_SAMPLE_RATE) {
2150 avctx->sample_rate = bytestream_get_le32(&data);
2153 if (flags & AV_SIDE_DATA_PARAM_CHANGE_DIMENSIONS) {
2156 avctx->width = bytestream_get_le32(&data);
2157 avctx->height = bytestream_get_le32(&data);
2159 ret = ff_set_dimensions(avctx, avctx->width, avctx->height);
2166 av_log(avctx, AV_LOG_ERROR, "PARAM_CHANGE side data too small.\n");
2167 return AVERROR_INVALIDDATA;
2170 static int add_metadata_from_side_data(AVCodecContext *avctx, AVFrame *frame)
2173 const uint8_t *side_metadata;
2175 AVDictionary **frame_md = avpriv_frame_get_metadatap(frame);
2177 side_metadata = av_packet_get_side_data(avctx->internal->pkt,
2178 AV_PKT_DATA_STRINGS_METADATA, &size);
2179 return av_packet_unpack_dictionary(side_metadata, size, frame_md);
2182 static int unrefcount_frame(AVCodecInternal *avci, AVFrame *frame)
2186 /* move the original frame to our backup */
2187 av_frame_unref(avci->to_free);
2188 av_frame_move_ref(avci->to_free, frame);
2190 /* now copy everything except the AVBufferRefs back
2191 * note that we make a COPY of the side data, so calling av_frame_free() on
2192 * the caller's frame will work properly */
2193 ret = av_frame_copy_props(frame, avci->to_free);
2197 memcpy(frame->data, avci->to_free->data, sizeof(frame->data));
2198 memcpy(frame->linesize, avci->to_free->linesize, sizeof(frame->linesize));
2199 if (avci->to_free->extended_data != avci->to_free->data) {
2200 int planes = av_frame_get_channels(avci->to_free);
2201 int size = planes * sizeof(*frame->extended_data);
2204 av_frame_unref(frame);
2208 frame->extended_data = av_malloc(size);
2209 if (!frame->extended_data) {
2210 av_frame_unref(frame);
2211 return AVERROR(ENOMEM);
2213 memcpy(frame->extended_data, avci->to_free->extended_data,
2216 frame->extended_data = frame->data;
2218 frame->format = avci->to_free->format;
2219 frame->width = avci->to_free->width;
2220 frame->height = avci->to_free->height;
2221 frame->channel_layout = avci->to_free->channel_layout;
2222 frame->nb_samples = avci->to_free->nb_samples;
2223 av_frame_set_channels(frame, av_frame_get_channels(avci->to_free));
2228 int attribute_align_arg avcodec_decode_video2(AVCodecContext *avctx, AVFrame *picture,
2229 int *got_picture_ptr,
2230 const AVPacket *avpkt)
2232 AVCodecInternal *avci = avctx->internal;
2234 // copy to ensure we do not change avpkt
2235 AVPacket tmp = *avpkt;
2238 return AVERROR(EINVAL);
2239 if (avctx->codec->type != AVMEDIA_TYPE_VIDEO) {
2240 av_log(avctx, AV_LOG_ERROR, "Invalid media type for video\n");
2241 return AVERROR(EINVAL);
2244 *got_picture_ptr = 0;
2245 if ((avctx->coded_width || avctx->coded_height) && av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx))
2246 return AVERROR(EINVAL);
2248 av_frame_unref(picture);
2250 if ((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size || (avctx->active_thread_type & FF_THREAD_FRAME)) {
2251 int did_split = av_packet_split_side_data(&tmp);
2252 ret = apply_param_change(avctx, &tmp);
2254 av_log(avctx, AV_LOG_ERROR, "Error applying parameter changes.\n");
2255 if (avctx->err_recognition & AV_EF_EXPLODE)
2259 avctx->internal->pkt = &tmp;
2260 if (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME)
2261 ret = ff_thread_decode_frame(avctx, picture, got_picture_ptr,
2264 ret = avctx->codec->decode(avctx, picture, got_picture_ptr,
2266 picture->pkt_dts = avpkt->dts;
2268 if(!avctx->has_b_frames){
2269 av_frame_set_pkt_pos(picture, avpkt->pos);
2271 //FIXME these should be under if(!avctx->has_b_frames)
2272 /* get_buffer is supposed to set frame parameters */
2273 if (!(avctx->codec->capabilities & CODEC_CAP_DR1)) {
2274 if (!picture->sample_aspect_ratio.num) picture->sample_aspect_ratio = avctx->sample_aspect_ratio;
2275 if (!picture->width) picture->width = avctx->width;
2276 if (!picture->height) picture->height = avctx->height;
2277 if (picture->format == AV_PIX_FMT_NONE) picture->format = avctx->pix_fmt;
2280 add_metadata_from_side_data(avctx, picture);
2283 emms_c(); //needed to avoid an emms_c() call before every return;
2285 avctx->internal->pkt = NULL;
2287 av_packet_free_side_data(&tmp);
2292 if (*got_picture_ptr) {
2293 if (!avctx->refcounted_frames) {
2294 int err = unrefcount_frame(avci, picture);
2299 avctx->frame_number++;
2300 av_frame_set_best_effort_timestamp(picture,
2301 guess_correct_pts(avctx,
2305 av_frame_unref(picture);
2309 /* many decoders assign whole AVFrames, thus overwriting extended_data;
2310 * make sure it's set correctly */
2311 av_assert0(!picture->extended_data || picture->extended_data == picture->data);
2316 #if FF_API_OLD_DECODE_AUDIO
2317 int attribute_align_arg avcodec_decode_audio3(AVCodecContext *avctx, int16_t *samples,
2318 int *frame_size_ptr,
2321 AVFrame *frame = av_frame_alloc();
2322 int ret, got_frame = 0;
2325 return AVERROR(ENOMEM);
2326 if (avctx->get_buffer != avcodec_default_get_buffer) {
2327 av_log(avctx, AV_LOG_ERROR, "Custom get_buffer() for use with"
2328 "avcodec_decode_audio3() detected. Overriding with avcodec_default_get_buffer\n");
2329 av_log(avctx, AV_LOG_ERROR, "Please port your application to "
2330 "avcodec_decode_audio4()\n");
2331 avctx->get_buffer = avcodec_default_get_buffer;
2332 avctx->release_buffer = avcodec_default_release_buffer;
2335 ret = avcodec_decode_audio4(avctx, frame, &got_frame, avpkt);
2337 if (ret >= 0 && got_frame) {
2339 int planar = av_sample_fmt_is_planar(avctx->sample_fmt);
2340 int data_size = av_samples_get_buffer_size(&plane_size, avctx->channels,
2342 avctx->sample_fmt, 1);
2343 if (*frame_size_ptr < data_size) {
2344 av_log(avctx, AV_LOG_ERROR, "output buffer size is too small for "
2345 "the current frame (%d < %d)\n", *frame_size_ptr, data_size);
2346 av_frame_free(&frame);
2347 return AVERROR(EINVAL);
2350 memcpy(samples, frame->extended_data[0], plane_size);
2352 if (planar && avctx->channels > 1) {
2353 uint8_t *out = ((uint8_t *)samples) + plane_size;
2354 for (ch = 1; ch < avctx->channels; ch++) {
2355 memcpy(out, frame->extended_data[ch], plane_size);
2359 *frame_size_ptr = data_size;
2361 *frame_size_ptr = 0;
2363 av_frame_free(&frame);
2369 int attribute_align_arg avcodec_decode_audio4(AVCodecContext *avctx,
2372 const AVPacket *avpkt)
2374 AVCodecInternal *avci = avctx->internal;
2379 if (!avpkt->data && avpkt->size) {
2380 av_log(avctx, AV_LOG_ERROR, "invalid packet: NULL data, size != 0\n");
2381 return AVERROR(EINVAL);
2384 return AVERROR(EINVAL);
2385 if (avctx->codec->type != AVMEDIA_TYPE_AUDIO) {
2386 av_log(avctx, AV_LOG_ERROR, "Invalid media type for audio\n");
2387 return AVERROR(EINVAL);
2390 av_frame_unref(frame);
2392 if ((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size || (avctx->active_thread_type & FF_THREAD_FRAME)) {
2395 uint32_t discard_padding = 0;
2396 // copy to ensure we do not change avpkt
2397 AVPacket tmp = *avpkt;
2398 int did_split = av_packet_split_side_data(&tmp);
2399 ret = apply_param_change(avctx, &tmp);
2401 av_log(avctx, AV_LOG_ERROR, "Error applying parameter changes.\n");
2402 if (avctx->err_recognition & AV_EF_EXPLODE)
2406 avctx->internal->pkt = &tmp;
2407 if (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME)
2408 ret = ff_thread_decode_frame(avctx, frame, got_frame_ptr, &tmp);
2410 ret = avctx->codec->decode(avctx, frame, got_frame_ptr, &tmp);
2411 frame->pkt_dts = avpkt->dts;
2413 if (ret >= 0 && *got_frame_ptr) {
2414 add_metadata_from_side_data(avctx, frame);
2415 avctx->frame_number++;
2416 av_frame_set_best_effort_timestamp(frame,
2417 guess_correct_pts(avctx,
2420 if (frame->format == AV_SAMPLE_FMT_NONE)
2421 frame->format = avctx->sample_fmt;
2422 if (!frame->channel_layout)
2423 frame->channel_layout = avctx->channel_layout;
2424 if (!av_frame_get_channels(frame))
2425 av_frame_set_channels(frame, avctx->channels);
2426 if (!frame->sample_rate)
2427 frame->sample_rate = avctx->sample_rate;
2430 side= av_packet_get_side_data(avctx->internal->pkt, AV_PKT_DATA_SKIP_SAMPLES, &side_size);
2431 if(side && side_size>=10) {
2432 avctx->internal->skip_samples = AV_RL32(side);
2433 av_log(avctx, AV_LOG_DEBUG, "skip %d samples due to side data\n",
2434 avctx->internal->skip_samples);
2435 discard_padding = AV_RL32(side + 4);
2437 if (avctx->internal->skip_samples && *got_frame_ptr) {
2438 if(frame->nb_samples <= avctx->internal->skip_samples){
2440 avctx->internal->skip_samples -= frame->nb_samples;
2441 av_log(avctx, AV_LOG_DEBUG, "skip whole frame, skip left: %d\n",
2442 avctx->internal->skip_samples);
2444 av_samples_copy(frame->extended_data, frame->extended_data, 0, avctx->internal->skip_samples,
2445 frame->nb_samples - avctx->internal->skip_samples, avctx->channels, frame->format);
2446 if(avctx->pkt_timebase.num && avctx->sample_rate) {
2447 int64_t diff_ts = av_rescale_q(avctx->internal->skip_samples,
2448 (AVRational){1, avctx->sample_rate},
2449 avctx->pkt_timebase);
2450 if(frame->pkt_pts!=AV_NOPTS_VALUE)
2451 frame->pkt_pts += diff_ts;
2452 if(frame->pkt_dts!=AV_NOPTS_VALUE)
2453 frame->pkt_dts += diff_ts;
2454 if (av_frame_get_pkt_duration(frame) >= diff_ts)
2455 av_frame_set_pkt_duration(frame, av_frame_get_pkt_duration(frame) - diff_ts);
2457 av_log(avctx, AV_LOG_WARNING, "Could not update timestamps for skipped samples.\n");
2459 av_log(avctx, AV_LOG_DEBUG, "skip %d/%d samples\n",
2460 avctx->internal->skip_samples, frame->nb_samples);
2461 frame->nb_samples -= avctx->internal->skip_samples;
2462 avctx->internal->skip_samples = 0;
2466 if (discard_padding > 0 && discard_padding <= frame->nb_samples && *got_frame_ptr) {
2467 if (discard_padding == frame->nb_samples) {
2470 if(avctx->pkt_timebase.num && avctx->sample_rate) {
2471 int64_t diff_ts = av_rescale_q(frame->nb_samples - discard_padding,
2472 (AVRational){1, avctx->sample_rate},
2473 avctx->pkt_timebase);
2474 if (av_frame_get_pkt_duration(frame) >= diff_ts)
2475 av_frame_set_pkt_duration(frame, av_frame_get_pkt_duration(frame) - diff_ts);
2477 av_log(avctx, AV_LOG_WARNING, "Could not update timestamps for discarded samples.\n");
2479 av_log(avctx, AV_LOG_DEBUG, "discard %d/%d samples\n",
2480 discard_padding, frame->nb_samples);
2481 frame->nb_samples -= discard_padding;
2485 avctx->internal->pkt = NULL;
2487 av_packet_free_side_data(&tmp);
2492 if (ret >= 0 && *got_frame_ptr) {
2493 if (!avctx->refcounted_frames) {
2494 int err = unrefcount_frame(avci, frame);
2499 av_frame_unref(frame);
2505 #define UTF8_MAX_BYTES 4 /* 5 and 6 bytes sequences should not be used */
2506 static int recode_subtitle(AVCodecContext *avctx,
2507 AVPacket *outpkt, const AVPacket *inpkt)
2510 iconv_t cd = (iconv_t)-1;
2517 if (avctx->sub_charenc_mode != FF_SUB_CHARENC_MODE_PRE_DECODER || inpkt->size == 0)
2521 cd = iconv_open("UTF-8", avctx->sub_charenc);
2522 av_assert0(cd != (iconv_t)-1);
2527 if (inl >= INT_MAX / UTF8_MAX_BYTES - FF_INPUT_BUFFER_PADDING_SIZE) {
2528 av_log(avctx, AV_LOG_ERROR, "Subtitles packet is too big for recoding\n");
2529 ret = AVERROR(ENOMEM);
2533 ret = av_new_packet(&tmp, inl * UTF8_MAX_BYTES);
2536 outpkt->buf = tmp.buf;
2537 outpkt->data = tmp.data;
2538 outpkt->size = tmp.size;
2539 outb = outpkt->data;
2540 outl = outpkt->size;
2542 if (iconv(cd, &inb, &inl, &outb, &outl) == (size_t)-1 ||
2543 iconv(cd, NULL, NULL, &outb, &outl) == (size_t)-1 ||
2544 outl >= outpkt->size || inl != 0) {
2545 av_log(avctx, AV_LOG_ERROR, "Unable to recode subtitle event \"%s\" "
2546 "from %s to UTF-8\n", inpkt->data, avctx->sub_charenc);
2547 av_free_packet(&tmp);
2548 ret = AVERROR(errno);
2551 outpkt->size -= outl;
2552 memset(outpkt->data + outpkt->size, 0, outl);
2555 if (cd != (iconv_t)-1)
2559 av_log(avctx, AV_LOG_ERROR, "requesting subtitles recoding without iconv");
2560 return AVERROR(EINVAL);
2564 static int utf8_check(const uint8_t *str)
2566 const uint8_t *byte;
2567 uint32_t codepoint, min;
2571 GET_UTF8(codepoint, *(byte++), return 0;);
2572 min = byte - str == 1 ? 0 : byte - str == 2 ? 0x80 :
2573 1 << (5 * (byte - str) - 4);
2574 if (codepoint < min || codepoint >= 0x110000 ||
2575 codepoint == 0xFFFE /* BOM */ ||
2576 codepoint >= 0xD800 && codepoint <= 0xDFFF /* surrogates */)
2583 int avcodec_decode_subtitle2(AVCodecContext *avctx, AVSubtitle *sub,
2589 if (!avpkt->data && avpkt->size) {
2590 av_log(avctx, AV_LOG_ERROR, "invalid packet: NULL data, size != 0\n");
2591 return AVERROR(EINVAL);
2594 return AVERROR(EINVAL);
2595 if (avctx->codec->type != AVMEDIA_TYPE_SUBTITLE) {
2596 av_log(avctx, AV_LOG_ERROR, "Invalid media type for subtitles\n");
2597 return AVERROR(EINVAL);
2601 avcodec_get_subtitle_defaults(sub);
2603 if ((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size) {
2604 AVPacket pkt_recoded;
2605 AVPacket tmp = *avpkt;
2606 int did_split = av_packet_split_side_data(&tmp);
2607 //apply_param_change(avctx, &tmp);
2610 /* FFMIN() prevents overflow in case the packet wasn't allocated with
2612 * If the side data is smaller than the buffer padding size, the
2613 * remaining bytes should have already been filled with zeros by the
2614 * original packet allocation anyway. */
2615 memset(tmp.data + tmp.size, 0,
2616 FFMIN(avpkt->size - tmp.size, FF_INPUT_BUFFER_PADDING_SIZE));
2620 ret = recode_subtitle(avctx, &pkt_recoded, &tmp);
2624 avctx->internal->pkt = &pkt_recoded;
2626 if (avctx->pkt_timebase.den && avpkt->pts != AV_NOPTS_VALUE)
2627 sub->pts = av_rescale_q(avpkt->pts,
2628 avctx->pkt_timebase, AV_TIME_BASE_Q);
2629 ret = avctx->codec->decode(avctx, sub, got_sub_ptr, &pkt_recoded);
2630 av_assert1((ret >= 0) >= !!*got_sub_ptr &&
2631 !!*got_sub_ptr >= !!sub->num_rects);
2633 if (sub->num_rects && !sub->end_display_time && avpkt->duration &&
2634 avctx->pkt_timebase.num) {
2635 AVRational ms = { 1, 1000 };
2636 sub->end_display_time = av_rescale_q(avpkt->duration,
2637 avctx->pkt_timebase, ms);
2640 for (i = 0; i < sub->num_rects; i++) {
2641 if (sub->rects[i]->ass && !utf8_check(sub->rects[i]->ass)) {
2642 av_log(avctx, AV_LOG_ERROR,
2643 "Invalid UTF-8 in decoded subtitles text; "
2644 "maybe missing -sub_charenc option\n");
2645 avsubtitle_free(sub);
2646 return AVERROR_INVALIDDATA;
2650 if (tmp.data != pkt_recoded.data) { // did we recode?
2651 /* prevent from destroying side data from original packet */
2652 pkt_recoded.side_data = NULL;
2653 pkt_recoded.side_data_elems = 0;
2655 av_free_packet(&pkt_recoded);
2657 if (avctx->codec_descriptor->props & AV_CODEC_PROP_BITMAP_SUB)
2659 else if (avctx->codec_descriptor->props & AV_CODEC_PROP_TEXT_SUB)
2661 avctx->internal->pkt = NULL;
2665 av_packet_free_side_data(&tmp);
2671 avctx->frame_number++;
2677 void avsubtitle_free(AVSubtitle *sub)
2681 for (i = 0; i < sub->num_rects; i++) {
2682 av_freep(&sub->rects[i]->pict.data[0]);
2683 av_freep(&sub->rects[i]->pict.data[1]);
2684 av_freep(&sub->rects[i]->pict.data[2]);
2685 av_freep(&sub->rects[i]->pict.data[3]);
2686 av_freep(&sub->rects[i]->text);
2687 av_freep(&sub->rects[i]->ass);
2688 av_freep(&sub->rects[i]);
2691 av_freep(&sub->rects);
2693 memset(sub, 0, sizeof(AVSubtitle));
2696 av_cold int avcodec_close(AVCodecContext *avctx)
2701 if (avcodec_is_open(avctx)) {
2702 FramePool *pool = avctx->internal->pool;
2704 if (CONFIG_FRAME_THREAD_ENCODER &&
2705 avctx->internal->frame_thread_encoder && avctx->thread_count > 1) {
2706 ff_frame_thread_encoder_free(avctx);
2708 if (HAVE_THREADS && avctx->internal->thread_ctx)
2709 ff_thread_free(avctx);
2710 if (avctx->codec && avctx->codec->close)
2711 avctx->codec->close(avctx);
2712 avctx->coded_frame = NULL;
2713 avctx->internal->byte_buffer_size = 0;
2714 av_freep(&avctx->internal->byte_buffer);
2715 av_frame_free(&avctx->internal->to_free);
2716 for (i = 0; i < FF_ARRAY_ELEMS(pool->pools); i++)
2717 av_buffer_pool_uninit(&pool->pools[i]);
2718 av_freep(&avctx->internal->pool);
2720 if (avctx->hwaccel && avctx->hwaccel->uninit)
2721 avctx->hwaccel->uninit(avctx);
2722 av_freep(&avctx->internal->hwaccel_priv_data);
2724 av_freep(&avctx->internal);
2727 if (avctx->priv_data && avctx->codec && avctx->codec->priv_class)
2728 av_opt_free(avctx->priv_data);
2730 av_freep(&avctx->priv_data);
2731 if (av_codec_is_encoder(avctx->codec))
2732 av_freep(&avctx->extradata);
2733 avctx->codec = NULL;
2734 avctx->active_thread_type = 0;
2739 static enum AVCodecID remap_deprecated_codec_id(enum AVCodecID id)
2742 //This is for future deprecatec codec ids, its empty since
2743 //last major bump but will fill up again over time, please don't remove it
2744 // case AV_CODEC_ID_UTVIDEO_DEPRECATED: return AV_CODEC_ID_UTVIDEO;
2745 case AV_CODEC_ID_BRENDER_PIX_DEPRECATED : return AV_CODEC_ID_BRENDER_PIX;
2746 case AV_CODEC_ID_OPUS_DEPRECATED : return AV_CODEC_ID_OPUS;
2747 case AV_CODEC_ID_TAK_DEPRECATED : return AV_CODEC_ID_TAK;
2748 case AV_CODEC_ID_PAF_AUDIO_DEPRECATED : return AV_CODEC_ID_PAF_AUDIO;
2749 case AV_CODEC_ID_PCM_S24LE_PLANAR_DEPRECATED : return AV_CODEC_ID_PCM_S24LE_PLANAR;
2750 case AV_CODEC_ID_PCM_S32LE_PLANAR_DEPRECATED : return AV_CODEC_ID_PCM_S32LE_PLANAR;
2751 case AV_CODEC_ID_ADPCM_VIMA_DEPRECATED : return AV_CODEC_ID_ADPCM_VIMA;
2752 case AV_CODEC_ID_ESCAPE130_DEPRECATED : return AV_CODEC_ID_ESCAPE130;
2753 case AV_CODEC_ID_EXR_DEPRECATED : return AV_CODEC_ID_EXR;
2754 case AV_CODEC_ID_G2M_DEPRECATED : return AV_CODEC_ID_G2M;
2755 case AV_CODEC_ID_PAF_VIDEO_DEPRECATED : return AV_CODEC_ID_PAF_VIDEO;
2756 case AV_CODEC_ID_WEBP_DEPRECATED : return AV_CODEC_ID_WEBP;
2757 case AV_CODEC_ID_HEVC_DEPRECATED : return AV_CODEC_ID_HEVC;
2758 case AV_CODEC_ID_MVC1_DEPRECATED : return AV_CODEC_ID_MVC1;
2759 case AV_CODEC_ID_MVC2_DEPRECATED : return AV_CODEC_ID_MVC2;
2760 case AV_CODEC_ID_SANM_DEPRECATED : return AV_CODEC_ID_SANM;
2761 case AV_CODEC_ID_SGIRLE_DEPRECATED : return AV_CODEC_ID_SGIRLE;
2762 case AV_CODEC_ID_VP7_DEPRECATED : return AV_CODEC_ID_VP7;
2763 default : return id;
2767 static AVCodec *find_encdec(enum AVCodecID id, int encoder)
2769 AVCodec *p, *experimental = NULL;
2771 id= remap_deprecated_codec_id(id);
2773 if ((encoder ? av_codec_is_encoder(p) : av_codec_is_decoder(p)) &&
2775 if (p->capabilities & CODEC_CAP_EXPERIMENTAL && !experimental) {
2782 return experimental;
2785 AVCodec *avcodec_find_encoder(enum AVCodecID id)
2787 return find_encdec(id, 1);
2790 AVCodec *avcodec_find_encoder_by_name(const char *name)
2797 if (av_codec_is_encoder(p) && strcmp(name, p->name) == 0)
2804 AVCodec *avcodec_find_decoder(enum AVCodecID id)
2806 return find_encdec(id, 0);
2809 AVCodec *avcodec_find_decoder_by_name(const char *name)
2816 if (av_codec_is_decoder(p) && strcmp(name, p->name) == 0)
2823 const char *avcodec_get_name(enum AVCodecID id)
2825 const AVCodecDescriptor *cd;
2828 if (id == AV_CODEC_ID_NONE)
2830 cd = avcodec_descriptor_get(id);
2833 av_log(NULL, AV_LOG_WARNING, "Codec 0x%x is not in the full list.\n", id);
2834 codec = avcodec_find_decoder(id);
2837 codec = avcodec_find_encoder(id);
2840 return "unknown_codec";
2843 size_t av_get_codec_tag_string(char *buf, size_t buf_size, unsigned int codec_tag)
2845 int i, len, ret = 0;
2847 #define TAG_PRINT(x) \
2848 (((x) >= '0' && (x) <= '9') || \
2849 ((x) >= 'a' && (x) <= 'z') || ((x) >= 'A' && (x) <= 'Z') || \
2850 ((x) == '.' || (x) == ' ' || (x) == '-' || (x) == '_'))
2852 for (i = 0; i < 4; i++) {
2853 len = snprintf(buf, buf_size,
2854 TAG_PRINT(codec_tag & 0xFF) ? "%c" : "[%d]", codec_tag & 0xFF);
2856 buf_size = buf_size > len ? buf_size - len : 0;
2863 void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)
2865 const char *codec_type;
2866 const char *codec_name;
2867 const char *profile = NULL;
2870 AVRational display_aspect_ratio;
2872 if (!buf || buf_size <= 0)
2874 codec_type = av_get_media_type_string(enc->codec_type);
2875 codec_name = avcodec_get_name(enc->codec_id);
2876 if (enc->profile != FF_PROFILE_UNKNOWN) {
2880 p = encode ? avcodec_find_encoder(enc->codec_id) :
2881 avcodec_find_decoder(enc->codec_id);
2883 profile = av_get_profile_name(p, enc->profile);
2886 snprintf(buf, buf_size, "%s: %s", codec_type ? codec_type : "unknown",
2888 buf[0] ^= 'a' ^ 'A'; /* first letter in uppercase */
2890 if (enc->codec && strcmp(enc->codec->name, codec_name))
2891 snprintf(buf + strlen(buf), buf_size - strlen(buf), " (%s)", enc->codec->name);
2894 snprintf(buf + strlen(buf), buf_size - strlen(buf), " (%s)", profile);
2895 if (enc->codec_tag) {
2897 av_get_codec_tag_string(tag_buf, sizeof(tag_buf), enc->codec_tag);
2898 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2899 " (%s / 0x%04X)", tag_buf, enc->codec_tag);
2902 switch (enc->codec_type) {
2903 case AVMEDIA_TYPE_VIDEO:
2904 if (enc->pix_fmt != AV_PIX_FMT_NONE) {
2905 char detail[256] = "(";
2906 const char *colorspace_name;
2907 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2909 av_get_pix_fmt_name(enc->pix_fmt));
2910 if (enc->bits_per_raw_sample &&
2911 enc->bits_per_raw_sample <= av_pix_fmt_desc_get(enc->pix_fmt)->comp[0].depth_minus1)
2912 av_strlcatf(detail, sizeof(detail), "%d bpc, ", enc->bits_per_raw_sample);
2913 if (enc->color_range != AVCOL_RANGE_UNSPECIFIED)
2914 av_strlcatf(detail, sizeof(detail),
2915 enc->color_range == AVCOL_RANGE_MPEG ? "tv, ": "pc, ");
2917 colorspace_name = av_get_colorspace_name(enc->colorspace);
2918 if (colorspace_name)
2919 av_strlcatf(detail, sizeof(detail), "%s, ", colorspace_name);
2921 if (strlen(detail) > 1) {
2922 detail[strlen(detail) - 2] = 0;
2923 av_strlcatf(buf, buf_size, "%s)", detail);
2927 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2929 enc->width, enc->height);
2930 if (enc->sample_aspect_ratio.num) {
2931 av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
2932 enc->width * enc->sample_aspect_ratio.num,
2933 enc->height * enc->sample_aspect_ratio.den,
2935 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2936 " [SAR %d:%d DAR %d:%d]",
2937 enc->sample_aspect_ratio.num, enc->sample_aspect_ratio.den,
2938 display_aspect_ratio.num, display_aspect_ratio.den);
2940 if (av_log_get_level() >= AV_LOG_DEBUG) {
2941 int g = av_gcd(enc->time_base.num, enc->time_base.den);
2942 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2944 enc->time_base.num / g, enc->time_base.den / g);
2948 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2949 ", q=%d-%d", enc->qmin, enc->qmax);
2952 case AVMEDIA_TYPE_AUDIO:
2953 if (enc->sample_rate) {
2954 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2955 ", %d Hz", enc->sample_rate);
2957 av_strlcat(buf, ", ", buf_size);
2958 av_get_channel_layout_string(buf + strlen(buf), buf_size - strlen(buf), enc->channels, enc->channel_layout);
2959 if (enc->sample_fmt != AV_SAMPLE_FMT_NONE) {
2960 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2961 ", %s", av_get_sample_fmt_name(enc->sample_fmt));
2964 case AVMEDIA_TYPE_DATA:
2965 if (av_log_get_level() >= AV_LOG_DEBUG) {
2966 int g = av_gcd(enc->time_base.num, enc->time_base.den);
2968 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2970 enc->time_base.num / g, enc->time_base.den / g);
2973 case AVMEDIA_TYPE_SUBTITLE:
2975 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2976 ", %dx%d", enc->width, enc->height);
2982 if (enc->flags & CODEC_FLAG_PASS1)
2983 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2985 if (enc->flags & CODEC_FLAG_PASS2)
2986 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2989 bitrate = get_bit_rate(enc);
2991 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2992 ", %d kb/s", bitrate / 1000);
2993 } else if (enc->rc_max_rate > 0) {
2994 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2995 ", max. %d kb/s", enc->rc_max_rate / 1000);
2999 const char *av_get_profile_name(const AVCodec *codec, int profile)
3002 if (profile == FF_PROFILE_UNKNOWN || !codec->profiles)
3005 for (p = codec->profiles; p->profile != FF_PROFILE_UNKNOWN; p++)
3006 if (p->profile == profile)
3012 unsigned avcodec_version(void)
3014 // av_assert0(AV_CODEC_ID_V410==164);
3015 av_assert0(AV_CODEC_ID_PCM_S8_PLANAR==65563);
3016 av_assert0(AV_CODEC_ID_ADPCM_G722==69660);
3017 // av_assert0(AV_CODEC_ID_BMV_AUDIO==86071);
3018 av_assert0(AV_CODEC_ID_SRT==94216);
3019 av_assert0(LIBAVCODEC_VERSION_MICRO >= 100);
3021 av_assert0(CODEC_ID_CLLC == AV_CODEC_ID_CLLC);
3022 av_assert0(CODEC_ID_PCM_S8_PLANAR == AV_CODEC_ID_PCM_S8_PLANAR);
3023 av_assert0(CODEC_ID_ADPCM_IMA_APC == AV_CODEC_ID_ADPCM_IMA_APC);
3024 av_assert0(CODEC_ID_ILBC == AV_CODEC_ID_ILBC);
3025 av_assert0(CODEC_ID_SRT == AV_CODEC_ID_SRT);
3026 return LIBAVCODEC_VERSION_INT;
3029 const char *avcodec_configuration(void)
3031 return FFMPEG_CONFIGURATION;
3034 const char *avcodec_license(void)
3036 #define LICENSE_PREFIX "libavcodec license: "
3037 return LICENSE_PREFIX FFMPEG_LICENSE + sizeof(LICENSE_PREFIX) - 1;
3040 void avcodec_flush_buffers(AVCodecContext *avctx)
3042 if (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME)
3043 ff_thread_flush(avctx);
3044 else if (avctx->codec->flush)
3045 avctx->codec->flush(avctx);
3047 avctx->pts_correction_last_pts =
3048 avctx->pts_correction_last_dts = INT64_MIN;
3050 if (!avctx->refcounted_frames)
3051 av_frame_unref(avctx->internal->to_free);
3054 int av_get_exact_bits_per_sample(enum AVCodecID codec_id)
3057 case AV_CODEC_ID_8SVX_EXP:
3058 case AV_CODEC_ID_8SVX_FIB:
3059 case AV_CODEC_ID_ADPCM_CT:
3060 case AV_CODEC_ID_ADPCM_IMA_APC:
3061 case AV_CODEC_ID_ADPCM_IMA_EA_SEAD:
3062 case AV_CODEC_ID_ADPCM_IMA_OKI:
3063 case AV_CODEC_ID_ADPCM_IMA_WS:
3064 case AV_CODEC_ID_ADPCM_G722:
3065 case AV_CODEC_ID_ADPCM_YAMAHA:
3067 case AV_CODEC_ID_DSD_LSBF:
3068 case AV_CODEC_ID_DSD_MSBF:
3069 case AV_CODEC_ID_DSD_LSBF_PLANAR:
3070 case AV_CODEC_ID_DSD_MSBF_PLANAR:
3071 case AV_CODEC_ID_PCM_ALAW:
3072 case AV_CODEC_ID_PCM_MULAW:
3073 case AV_CODEC_ID_PCM_S8:
3074 case AV_CODEC_ID_PCM_S8_PLANAR:
3075 case AV_CODEC_ID_PCM_U8:
3076 case AV_CODEC_ID_PCM_ZORK:
3078 case AV_CODEC_ID_PCM_S16BE:
3079 case AV_CODEC_ID_PCM_S16BE_PLANAR:
3080 case AV_CODEC_ID_PCM_S16LE:
3081 case AV_CODEC_ID_PCM_S16LE_PLANAR:
3082 case AV_CODEC_ID_PCM_U16BE:
3083 case AV_CODEC_ID_PCM_U16LE:
3085 case AV_CODEC_ID_PCM_S24DAUD:
3086 case AV_CODEC_ID_PCM_S24BE:
3087 case AV_CODEC_ID_PCM_S24LE:
3088 case AV_CODEC_ID_PCM_S24LE_PLANAR:
3089 case AV_CODEC_ID_PCM_U24BE:
3090 case AV_CODEC_ID_PCM_U24LE:
3092 case AV_CODEC_ID_PCM_S32BE:
3093 case AV_CODEC_ID_PCM_S32LE:
3094 case AV_CODEC_ID_PCM_S32LE_PLANAR:
3095 case AV_CODEC_ID_PCM_U32BE:
3096 case AV_CODEC_ID_PCM_U32LE:
3097 case AV_CODEC_ID_PCM_F32BE:
3098 case AV_CODEC_ID_PCM_F32LE:
3100 case AV_CODEC_ID_PCM_F64BE:
3101 case AV_CODEC_ID_PCM_F64LE:
3108 enum AVCodecID av_get_pcm_codec(enum AVSampleFormat fmt, int be)
3110 static const enum AVCodecID map[AV_SAMPLE_FMT_NB][2] = {
3111 [AV_SAMPLE_FMT_U8 ] = { AV_CODEC_ID_PCM_U8, AV_CODEC_ID_PCM_U8 },
3112 [AV_SAMPLE_FMT_S16 ] = { AV_CODEC_ID_PCM_S16LE, AV_CODEC_ID_PCM_S16BE },
3113 [AV_SAMPLE_FMT_S32 ] = { AV_CODEC_ID_PCM_S32LE, AV_CODEC_ID_PCM_S32BE },
3114 [AV_SAMPLE_FMT_FLT ] = { AV_CODEC_ID_PCM_F32LE, AV_CODEC_ID_PCM_F32BE },
3115 [AV_SAMPLE_FMT_DBL ] = { AV_CODEC_ID_PCM_F64LE, AV_CODEC_ID_PCM_F64BE },
3116 [AV_SAMPLE_FMT_U8P ] = { AV_CODEC_ID_PCM_U8, AV_CODEC_ID_PCM_U8 },
3117 [AV_SAMPLE_FMT_S16P] = { AV_CODEC_ID_PCM_S16LE, AV_CODEC_ID_PCM_S16BE },
3118 [AV_SAMPLE_FMT_S32P] = { AV_CODEC_ID_PCM_S32LE, AV_CODEC_ID_PCM_S32BE },
3119 [AV_SAMPLE_FMT_FLTP] = { AV_CODEC_ID_PCM_F32LE, AV_CODEC_ID_PCM_F32BE },
3120 [AV_SAMPLE_FMT_DBLP] = { AV_CODEC_ID_PCM_F64LE, AV_CODEC_ID_PCM_F64BE },
3122 if (fmt < 0 || fmt >= AV_SAMPLE_FMT_NB)
3123 return AV_CODEC_ID_NONE;
3124 if (be < 0 || be > 1)
3126 return map[fmt][be];
3129 int av_get_bits_per_sample(enum AVCodecID codec_id)
3132 case AV_CODEC_ID_ADPCM_SBPRO_2:
3134 case AV_CODEC_ID_ADPCM_SBPRO_3:
3136 case AV_CODEC_ID_ADPCM_SBPRO_4:
3137 case AV_CODEC_ID_ADPCM_IMA_WAV:
3138 case AV_CODEC_ID_ADPCM_IMA_QT:
3139 case AV_CODEC_ID_ADPCM_SWF:
3140 case AV_CODEC_ID_ADPCM_MS:
3143 return av_get_exact_bits_per_sample(codec_id);
3147 int av_get_audio_frame_duration(AVCodecContext *avctx, int frame_bytes)
3149 int id, sr, ch, ba, tag, bps;
3151 id = avctx->codec_id;
3152 sr = avctx->sample_rate;
3153 ch = avctx->channels;
3154 ba = avctx->block_align;
3155 tag = avctx->codec_tag;
3156 bps = av_get_exact_bits_per_sample(avctx->codec_id);
3158 /* codecs with an exact constant bits per sample */
3159 if (bps > 0 && ch > 0 && frame_bytes > 0 && ch < 32768 && bps < 32768)
3160 return (frame_bytes * 8LL) / (bps * ch);
3161 bps = avctx->bits_per_coded_sample;
3163 /* codecs with a fixed packet duration */
3165 case AV_CODEC_ID_ADPCM_ADX: return 32;
3166 case AV_CODEC_ID_ADPCM_IMA_QT: return 64;
3167 case AV_CODEC_ID_ADPCM_EA_XAS: return 128;
3168 case AV_CODEC_ID_AMR_NB:
3169 case AV_CODEC_ID_EVRC:
3170 case AV_CODEC_ID_GSM:
3171 case AV_CODEC_ID_QCELP:
3172 case AV_CODEC_ID_RA_288: return 160;
3173 case AV_CODEC_ID_AMR_WB:
3174 case AV_CODEC_ID_GSM_MS: return 320;
3175 case AV_CODEC_ID_MP1: return 384;
3176 case AV_CODEC_ID_ATRAC1: return 512;
3177 case AV_CODEC_ID_ATRAC3: return 1024;
3178 case AV_CODEC_ID_MP2:
3179 case AV_CODEC_ID_MUSEPACK7: return 1152;
3180 case AV_CODEC_ID_AC3: return 1536;
3184 /* calc from sample rate */
3185 if (id == AV_CODEC_ID_TTA)
3186 return 256 * sr / 245;
3189 /* calc from sample rate and channels */
3190 if (id == AV_CODEC_ID_BINKAUDIO_DCT)
3191 return (480 << (sr / 22050)) / ch;
3196 /* calc from block_align */
3197 if (id == AV_CODEC_ID_SIPR) {
3199 case 20: return 160;
3200 case 19: return 144;
3201 case 29: return 288;
3202 case 37: return 480;
3204 } else if (id == AV_CODEC_ID_ILBC) {
3206 case 38: return 160;
3207 case 50: return 240;
3212 if (frame_bytes > 0) {
3213 /* calc from frame_bytes only */
3214 if (id == AV_CODEC_ID_TRUESPEECH)
3215 return 240 * (frame_bytes / 32);
3216 if (id == AV_CODEC_ID_NELLYMOSER)
3217 return 256 * (frame_bytes / 64);
3218 if (id == AV_CODEC_ID_RA_144)
3219 return 160 * (frame_bytes / 20);
3220 if (id == AV_CODEC_ID_G723_1)
3221 return 240 * (frame_bytes / 24);
3224 /* calc from frame_bytes and bits_per_coded_sample */
3225 if (id == AV_CODEC_ID_ADPCM_G726)
3226 return frame_bytes * 8 / bps;
3230 /* calc from frame_bytes and channels */
3232 case AV_CODEC_ID_ADPCM_AFC:
3233 return frame_bytes / (9 * ch) * 16;
3234 case AV_CODEC_ID_ADPCM_DTK:
3235 return frame_bytes / (16 * ch) * 28;
3236 case AV_CODEC_ID_ADPCM_4XM:
3237 case AV_CODEC_ID_ADPCM_IMA_ISS:
3238 return (frame_bytes - 4 * ch) * 2 / ch;
3239 case AV_CODEC_ID_ADPCM_IMA_SMJPEG:
3240 return (frame_bytes - 4) * 2 / ch;
3241 case AV_CODEC_ID_ADPCM_IMA_AMV:
3242 return (frame_bytes - 8) * 2 / ch;
3243 case AV_CODEC_ID_ADPCM_XA:
3244 return (frame_bytes / 128) * 224 / ch;
3245 case AV_CODEC_ID_INTERPLAY_DPCM:
3246 return (frame_bytes - 6 - ch) / ch;
3247 case AV_CODEC_ID_ROQ_DPCM:
3248 return (frame_bytes - 8) / ch;
3249 case AV_CODEC_ID_XAN_DPCM:
3250 return (frame_bytes - 2 * ch) / ch;
3251 case AV_CODEC_ID_MACE3:
3252 return 3 * frame_bytes / ch;
3253 case AV_CODEC_ID_MACE6:
3254 return 6 * frame_bytes / ch;
3255 case AV_CODEC_ID_PCM_LXF:
3256 return 2 * (frame_bytes / (5 * ch));
3257 case AV_CODEC_ID_IAC:
3258 case AV_CODEC_ID_IMC:
3259 return 4 * frame_bytes / ch;
3263 /* calc from frame_bytes, channels, and codec_tag */
3264 if (id == AV_CODEC_ID_SOL_DPCM) {
3266 return frame_bytes / ch;
3268 return frame_bytes * 2 / ch;
3273 /* calc from frame_bytes, channels, and block_align */
3274 int blocks = frame_bytes / ba;
3275 switch (avctx->codec_id) {
3276 case AV_CODEC_ID_ADPCM_IMA_WAV:
3277 if (bps < 2 || bps > 5)
3279 return blocks * (1 + (ba - 4 * ch) / (bps * ch) * 8);
3280 case AV_CODEC_ID_ADPCM_IMA_DK3:
3281 return blocks * (((ba - 16) * 2 / 3 * 4) / ch);
3282 case AV_CODEC_ID_ADPCM_IMA_DK4:
3283 return blocks * (1 + (ba - 4 * ch) * 2 / ch);
3284 case AV_CODEC_ID_ADPCM_IMA_RAD:
3285 return blocks * ((ba - 4 * ch) * 2 / ch);
3286 case AV_CODEC_ID_ADPCM_MS:
3287 return blocks * (2 + (ba - 7 * ch) * 2 / ch);
3292 /* calc from frame_bytes, channels, and bits_per_coded_sample */
3293 switch (avctx->codec_id) {
3294 case AV_CODEC_ID_PCM_DVD:
3297 return 2 * (frame_bytes / ((bps * 2 / 8) * ch));
3298 case AV_CODEC_ID_PCM_BLURAY:
3301 return frame_bytes / ((FFALIGN(ch, 2) * bps) / 8);
3302 case AV_CODEC_ID_S302M:
3303 return 2 * (frame_bytes / ((bps + 4) / 4)) / ch;
3313 int ff_thread_init(AVCodecContext *s)
3320 unsigned int av_xiphlacing(unsigned char *s, unsigned int v)
3334 int ff_match_2uint16(const uint16_t(*tab)[2], int size, int a, int b)
3337 for (i = 0; i < size && !(tab[i][0] == a && tab[i][1] == b); i++) ;
3341 #if FF_API_MISSING_SAMPLE
3342 FF_DISABLE_DEPRECATION_WARNINGS
3343 void av_log_missing_feature(void *avc, const char *feature, int want_sample)
3345 av_log(avc, AV_LOG_WARNING, "%s is not implemented. Update your FFmpeg "
3346 "version to the newest one from Git. If the problem still "
3347 "occurs, it means that your file has a feature which has not "
3348 "been implemented.\n", feature);
3350 av_log_ask_for_sample(avc, NULL);
3353 void av_log_ask_for_sample(void *avc, const char *msg, ...)
3355 va_list argument_list;
3357 va_start(argument_list, msg);
3360 av_vlog(avc, AV_LOG_WARNING, msg, argument_list);
3361 av_log(avc, AV_LOG_WARNING, "If you want to help, upload a sample "
3362 "of this file to ftp://upload.ffmpeg.org/incoming/ "
3363 "and contact the ffmpeg-devel mailing list. (ffmpeg-devel@ffmpeg.org)\n");
3365 va_end(argument_list);
3367 FF_ENABLE_DEPRECATION_WARNINGS
3368 #endif /* FF_API_MISSING_SAMPLE */
3370 static AVHWAccel *first_hwaccel = NULL;
3371 static AVHWAccel **last_hwaccel = &first_hwaccel;
3373 void av_register_hwaccel(AVHWAccel *hwaccel)
3375 AVHWAccel **p = last_hwaccel;
3376 hwaccel->next = NULL;
3377 while(*p || avpriv_atomic_ptr_cas((void * volatile *)p, NULL, hwaccel))
3379 last_hwaccel = &hwaccel->next;
3382 AVHWAccel *av_hwaccel_next(const AVHWAccel *hwaccel)
3384 return hwaccel ? hwaccel->next : first_hwaccel;
3387 int av_lockmgr_register(int (*cb)(void **mutex, enum AVLockOp op))
3390 if (lockmgr_cb(&codec_mutex, AV_LOCK_DESTROY))
3392 if (lockmgr_cb(&avformat_mutex, AV_LOCK_DESTROY))
3399 if (lockmgr_cb(&codec_mutex, AV_LOCK_CREATE))
3401 if (lockmgr_cb(&avformat_mutex, AV_LOCK_CREATE))
3407 int ff_lock_avcodec(AVCodecContext *log_ctx)
3410 if ((*lockmgr_cb)(&codec_mutex, AV_LOCK_OBTAIN))
3413 entangled_thread_counter++;
3414 if (entangled_thread_counter != 1) {
3415 av_log(log_ctx, AV_LOG_ERROR, "Insufficient thread locking around avcodec_open/close()\n");
3417 av_log(log_ctx, AV_LOG_ERROR, "No lock manager is set, please see av_lockmgr_register()\n");
3418 ff_avcodec_locked = 1;
3419 ff_unlock_avcodec();
3420 return AVERROR(EINVAL);
3422 av_assert0(!ff_avcodec_locked);
3423 ff_avcodec_locked = 1;
3427 int ff_unlock_avcodec(void)
3429 av_assert0(ff_avcodec_locked);
3430 ff_avcodec_locked = 0;
3431 entangled_thread_counter--;
3433 if ((*lockmgr_cb)(&codec_mutex, AV_LOCK_RELEASE))
3439 int avpriv_lock_avformat(void)
3442 if ((*lockmgr_cb)(&avformat_mutex, AV_LOCK_OBTAIN))
3448 int avpriv_unlock_avformat(void)
3451 if ((*lockmgr_cb)(&avformat_mutex, AV_LOCK_RELEASE))
3457 unsigned int avpriv_toupper4(unsigned int x)
3459 return av_toupper(x & 0xFF) +
3460 (av_toupper((x >> 8) & 0xFF) << 8) +
3461 (av_toupper((x >> 16) & 0xFF) << 16) +
3462 ((unsigned)av_toupper((x >> 24) & 0xFF) << 24);
3465 int ff_thread_ref_frame(ThreadFrame *dst, ThreadFrame *src)
3469 dst->owner = src->owner;
3471 ret = av_frame_ref(dst->f, src->f);
3475 if (src->progress &&
3476 !(dst->progress = av_buffer_ref(src->progress))) {
3477 ff_thread_release_buffer(dst->owner, dst);
3478 return AVERROR(ENOMEM);
3486 enum AVPixelFormat ff_thread_get_format(AVCodecContext *avctx, const enum AVPixelFormat *fmt)
3488 return ff_get_format(avctx, fmt);
3491 int ff_thread_get_buffer(AVCodecContext *avctx, ThreadFrame *f, int flags)
3494 return ff_get_buffer(avctx, f->f, flags);
3497 void ff_thread_release_buffer(AVCodecContext *avctx, ThreadFrame *f)
3500 av_frame_unref(f->f);
3503 void ff_thread_finish_setup(AVCodecContext *avctx)
3507 void ff_thread_report_progress(ThreadFrame *f, int progress, int field)
3511 void ff_thread_await_progress(ThreadFrame *f, int progress, int field)
3515 int ff_thread_can_start_frame(AVCodecContext *avctx)
3520 int ff_alloc_entries(AVCodecContext *avctx, int count)
3525 void ff_reset_entries(AVCodecContext *avctx)
3529 void ff_thread_await_progress2(AVCodecContext *avctx, int field, int thread, int shift)
3533 void ff_thread_report_progress2(AVCodecContext *avctx, int field, int thread, int n)
3539 enum AVMediaType avcodec_get_type(enum AVCodecID codec_id)
3541 AVCodec *c= avcodec_find_decoder(codec_id);
3543 c= avcodec_find_encoder(codec_id);
3547 if (codec_id <= AV_CODEC_ID_NONE)
3548 return AVMEDIA_TYPE_UNKNOWN;
3549 else if (codec_id < AV_CODEC_ID_FIRST_AUDIO)
3550 return AVMEDIA_TYPE_VIDEO;
3551 else if (codec_id < AV_CODEC_ID_FIRST_SUBTITLE)
3552 return AVMEDIA_TYPE_AUDIO;
3553 else if (codec_id < AV_CODEC_ID_FIRST_UNKNOWN)
3554 return AVMEDIA_TYPE_SUBTITLE;
3556 return AVMEDIA_TYPE_UNKNOWN;
3559 int avcodec_is_open(AVCodecContext *s)
3561 return !!s->internal;
3564 int avpriv_bprint_to_extradata(AVCodecContext *avctx, struct AVBPrint *buf)
3569 ret = av_bprint_finalize(buf, &str);
3572 avctx->extradata = str;
3573 /* Note: the string is NUL terminated (so extradata can be read as a
3574 * string), but the ending character is not accounted in the size (in
3575 * binary formats you are likely not supposed to mux that character). When
3576 * extradata is copied, it is also padded with FF_INPUT_BUFFER_PADDING_SIZE
3578 avctx->extradata_size = buf->len;
3582 const uint8_t *avpriv_find_start_code(const uint8_t *av_restrict p,
3584 uint32_t *av_restrict state)
3588 av_assert0(p <= end);
3592 for (i = 0; i < 3; i++) {
3593 uint32_t tmp = *state << 8;
3594 *state = tmp + *(p++);
3595 if (tmp == 0x100 || p == end)
3600 if (p[-1] > 1 ) p += 3;
3601 else if (p[-2] ) p += 2;
3602 else if (p[-3]|(p[-1]-1)) p++;
3609 p = FFMIN(p, end) - 4;
3610 *state = AV_RB32(p);