3 * Copyright (c) 2001 Fabrice Bellard
4 * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
6 * This file is part of FFmpeg.
8 * FFmpeg is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
13 * FFmpeg is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with FFmpeg; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
29 #include "libavutil/atomic.h"
30 #include "libavutil/attributes.h"
31 #include "libavutil/avassert.h"
32 #include "libavutil/avstring.h"
33 #include "libavutil/bprint.h"
34 #include "libavutil/channel_layout.h"
35 #include "libavutil/crc.h"
36 #include "libavutil/frame.h"
37 #include "libavutil/internal.h"
38 #include "libavutil/mathematics.h"
39 #include "libavutil/pixdesc.h"
40 #include "libavutil/imgutils.h"
41 #include "libavutil/samplefmt.h"
42 #include "libavutil/dict.h"
45 #include "libavutil/opt.h"
47 #include "frame_thread_encoder.h"
50 #include "bytestream.h"
63 #include "compat/w32pthreads.h"
65 #include "compat/os2threads.h"
68 #if HAVE_PTHREADS || HAVE_W32THREADS || HAVE_OS2THREADS
69 static int default_lockmgr_cb(void **arg, enum AVLockOp op)
71 void * volatile * mutex = arg;
79 pthread_mutex_t *tmp = av_malloc(sizeof(pthread_mutex_t));
81 return AVERROR(ENOMEM);
82 if ((err = pthread_mutex_init(tmp, NULL))) {
86 if (avpriv_atomic_ptr_cas(mutex, NULL, tmp)) {
87 pthread_mutex_destroy(tmp);
92 if ((err = pthread_mutex_lock(*mutex)))
97 if ((err = pthread_mutex_unlock(*mutex)))
101 case AV_LOCK_DESTROY:
103 pthread_mutex_destroy(*mutex);
105 avpriv_atomic_ptr_cas(mutex, *mutex, NULL);
110 static int (*lockmgr_cb)(void **mutex, enum AVLockOp op) = default_lockmgr_cb;
112 static int (*lockmgr_cb)(void **mutex, enum AVLockOp op) = NULL;
116 volatile int ff_avcodec_locked;
117 static int volatile entangled_thread_counter = 0;
118 static void *codec_mutex;
119 static void *avformat_mutex;
121 #if CONFIG_RAISE_MAJOR
122 # define LIBNAME "LIBAVCODEC_155"
124 # define LIBNAME "LIBAVCODEC_55"
127 #if FF_API_FAST_MALLOC && CONFIG_SHARED && HAVE_SYMVER
128 FF_SYMVER(void*, av_fast_realloc, (void *ptr, unsigned int *size, size_t min_size), LIBNAME)
130 return av_fast_realloc(ptr, size, min_size);
133 FF_SYMVER(void, av_fast_malloc, (void *ptr, unsigned int *size, size_t min_size), LIBNAME)
135 av_fast_malloc(ptr, size, min_size);
139 static inline int ff_fast_malloc(void *ptr, unsigned int *size, size_t min_size, int zero_realloc)
142 if (min_size < *size)
144 min_size = FFMAX(17 * min_size / 16 + 32, min_size);
146 *p = zero_realloc ? av_mallocz(min_size) : av_malloc(min_size);
153 void av_fast_padded_malloc(void *ptr, unsigned int *size, size_t min_size)
156 if (min_size > SIZE_MAX - FF_INPUT_BUFFER_PADDING_SIZE) {
161 if (!ff_fast_malloc(p, size, min_size + FF_INPUT_BUFFER_PADDING_SIZE, 1))
162 memset(*p + min_size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
165 void av_fast_padded_mallocz(void *ptr, unsigned int *size, size_t min_size)
168 if (min_size > SIZE_MAX - FF_INPUT_BUFFER_PADDING_SIZE) {
173 if (!ff_fast_malloc(p, size, min_size + FF_INPUT_BUFFER_PADDING_SIZE, 1))
174 memset(*p, 0, min_size + FF_INPUT_BUFFER_PADDING_SIZE);
177 /* encoder management */
178 static AVCodec *first_avcodec = NULL;
179 static AVCodec **last_avcodec = &first_avcodec;
181 AVCodec *av_codec_next(const AVCodec *c)
186 return first_avcodec;
189 static av_cold void avcodec_init(void)
191 static int initialized = 0;
193 if (initialized != 0)
198 ff_dsputil_static_init();
201 int av_codec_is_encoder(const AVCodec *codec)
203 return codec && (codec->encode_sub || codec->encode2);
206 int av_codec_is_decoder(const AVCodec *codec)
208 return codec && codec->decode;
211 av_cold void avcodec_register(AVCodec *codec)
218 while(*p || avpriv_atomic_ptr_cas((void * volatile *)p, NULL, codec))
220 last_avcodec = &codec->next;
222 if (codec->init_static_data)
223 codec->init_static_data(codec);
227 unsigned avcodec_get_edge_width(void)
233 #if FF_API_SET_DIMENSIONS
234 void avcodec_set_dimensions(AVCodecContext *s, int width, int height)
236 int ret = ff_set_dimensions(s, width, height);
238 av_log(s, AV_LOG_WARNING, "Failed to set dimensions %d %d\n", width, height);
243 int ff_set_dimensions(AVCodecContext *s, int width, int height)
245 int ret = av_image_check_size(width, height, 0, s);
250 s->coded_width = width;
251 s->coded_height = height;
252 s->width = FF_CEIL_RSHIFT(width, s->lowres);
253 s->height = FF_CEIL_RSHIFT(height, s->lowres);
258 int ff_side_data_update_matrix_encoding(AVFrame *frame,
259 enum AVMatrixEncoding matrix_encoding)
261 AVFrameSideData *side_data;
262 enum AVMatrixEncoding *data;
264 side_data = av_frame_get_side_data(frame, AV_FRAME_DATA_MATRIXENCODING);
266 side_data = av_frame_new_side_data(frame, AV_FRAME_DATA_MATRIXENCODING,
267 sizeof(enum AVMatrixEncoding));
270 return AVERROR(ENOMEM);
272 data = (enum AVMatrixEncoding*)side_data->data;
273 *data = matrix_encoding;
278 void avcodec_align_dimensions2(AVCodecContext *s, int *width, int *height,
279 int linesize_align[AV_NUM_DATA_POINTERS])
285 switch (s->pix_fmt) {
286 case AV_PIX_FMT_YUV420P:
287 case AV_PIX_FMT_YUYV422:
288 case AV_PIX_FMT_YVYU422:
289 case AV_PIX_FMT_UYVY422:
290 case AV_PIX_FMT_YUV422P:
291 case AV_PIX_FMT_YUV440P:
292 case AV_PIX_FMT_YUV444P:
293 case AV_PIX_FMT_GBRAP:
294 case AV_PIX_FMT_GBRP:
295 case AV_PIX_FMT_GRAY8:
296 case AV_PIX_FMT_GRAY16BE:
297 case AV_PIX_FMT_GRAY16LE:
298 case AV_PIX_FMT_YUVJ420P:
299 case AV_PIX_FMT_YUVJ422P:
300 case AV_PIX_FMT_YUVJ440P:
301 case AV_PIX_FMT_YUVJ444P:
302 case AV_PIX_FMT_YUVA420P:
303 case AV_PIX_FMT_YUVA422P:
304 case AV_PIX_FMT_YUVA444P:
305 case AV_PIX_FMT_YUV420P9LE:
306 case AV_PIX_FMT_YUV420P9BE:
307 case AV_PIX_FMT_YUV420P10LE:
308 case AV_PIX_FMT_YUV420P10BE:
309 case AV_PIX_FMT_YUV420P12LE:
310 case AV_PIX_FMT_YUV420P12BE:
311 case AV_PIX_FMT_YUV420P14LE:
312 case AV_PIX_FMT_YUV420P14BE:
313 case AV_PIX_FMT_YUV420P16LE:
314 case AV_PIX_FMT_YUV420P16BE:
315 case AV_PIX_FMT_YUVA420P9LE:
316 case AV_PIX_FMT_YUVA420P9BE:
317 case AV_PIX_FMT_YUVA420P10LE:
318 case AV_PIX_FMT_YUVA420P10BE:
319 case AV_PIX_FMT_YUVA420P16LE:
320 case AV_PIX_FMT_YUVA420P16BE:
321 case AV_PIX_FMT_YUV422P9LE:
322 case AV_PIX_FMT_YUV422P9BE:
323 case AV_PIX_FMT_YUV422P10LE:
324 case AV_PIX_FMT_YUV422P10BE:
325 case AV_PIX_FMT_YUV422P12LE:
326 case AV_PIX_FMT_YUV422P12BE:
327 case AV_PIX_FMT_YUV422P14LE:
328 case AV_PIX_FMT_YUV422P14BE:
329 case AV_PIX_FMT_YUV422P16LE:
330 case AV_PIX_FMT_YUV422P16BE:
331 case AV_PIX_FMT_YUVA422P9LE:
332 case AV_PIX_FMT_YUVA422P9BE:
333 case AV_PIX_FMT_YUVA422P10LE:
334 case AV_PIX_FMT_YUVA422P10BE:
335 case AV_PIX_FMT_YUVA422P16LE:
336 case AV_PIX_FMT_YUVA422P16BE:
337 case AV_PIX_FMT_YUV444P9LE:
338 case AV_PIX_FMT_YUV444P9BE:
339 case AV_PIX_FMT_YUV444P10LE:
340 case AV_PIX_FMT_YUV444P10BE:
341 case AV_PIX_FMT_YUV444P12LE:
342 case AV_PIX_FMT_YUV444P12BE:
343 case AV_PIX_FMT_YUV444P14LE:
344 case AV_PIX_FMT_YUV444P14BE:
345 case AV_PIX_FMT_YUV444P16LE:
346 case AV_PIX_FMT_YUV444P16BE:
347 case AV_PIX_FMT_YUVA444P9LE:
348 case AV_PIX_FMT_YUVA444P9BE:
349 case AV_PIX_FMT_YUVA444P10LE:
350 case AV_PIX_FMT_YUVA444P10BE:
351 case AV_PIX_FMT_YUVA444P16LE:
352 case AV_PIX_FMT_YUVA444P16BE:
353 case AV_PIX_FMT_GBRP9LE:
354 case AV_PIX_FMT_GBRP9BE:
355 case AV_PIX_FMT_GBRP10LE:
356 case AV_PIX_FMT_GBRP10BE:
357 case AV_PIX_FMT_GBRP12LE:
358 case AV_PIX_FMT_GBRP12BE:
359 case AV_PIX_FMT_GBRP14LE:
360 case AV_PIX_FMT_GBRP14BE:
361 w_align = 16; //FIXME assume 16 pixel per macroblock
362 h_align = 16 * 2; // interlaced needs 2 macroblocks height
364 case AV_PIX_FMT_YUV411P:
365 case AV_PIX_FMT_YUVJ411P:
366 case AV_PIX_FMT_UYYVYY411:
370 case AV_PIX_FMT_YUV410P:
371 if (s->codec_id == AV_CODEC_ID_SVQ1) {
376 case AV_PIX_FMT_RGB555:
377 if (s->codec_id == AV_CODEC_ID_RPZA) {
382 case AV_PIX_FMT_PAL8:
383 case AV_PIX_FMT_BGR8:
384 case AV_PIX_FMT_RGB8:
385 if (s->codec_id == AV_CODEC_ID_SMC ||
386 s->codec_id == AV_CODEC_ID_CINEPAK) {
391 case AV_PIX_FMT_BGR24:
392 if ((s->codec_id == AV_CODEC_ID_MSZH) ||
393 (s->codec_id == AV_CODEC_ID_ZLIB)) {
398 case AV_PIX_FMT_RGB24:
399 if (s->codec_id == AV_CODEC_ID_CINEPAK) {
410 if (s->codec_id == AV_CODEC_ID_IFF_ILBM || s->codec_id == AV_CODEC_ID_IFF_BYTERUN1) {
411 w_align = FFMAX(w_align, 8);
414 *width = FFALIGN(*width, w_align);
415 *height = FFALIGN(*height, h_align);
416 if (s->codec_id == AV_CODEC_ID_H264 || s->lowres)
417 // some of the optimized chroma MC reads one line too much
418 // which is also done in mpeg decoders with lowres > 0
421 for (i = 0; i < 4; i++)
422 linesize_align[i] = STRIDE_ALIGN;
425 void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height)
427 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(s->pix_fmt);
428 int chroma_shift = desc->log2_chroma_w;
429 int linesize_align[AV_NUM_DATA_POINTERS];
432 avcodec_align_dimensions2(s, width, height, linesize_align);
433 align = FFMAX(linesize_align[0], linesize_align[3]);
434 linesize_align[1] <<= chroma_shift;
435 linesize_align[2] <<= chroma_shift;
436 align = FFMAX3(align, linesize_align[1], linesize_align[2]);
437 *width = FFALIGN(*width, align);
440 int avcodec_enum_to_chroma_pos(int *xpos, int *ypos, enum AVChromaLocation pos)
442 if (pos <= AVCHROMA_LOC_UNSPECIFIED || pos >= AVCHROMA_LOC_NB)
443 return AVERROR(EINVAL);
446 *xpos = (pos&1) * 128;
447 *ypos = ((pos>>1)^(pos<4)) * 128;
452 enum AVChromaLocation avcodec_chroma_pos_to_enum(int xpos, int ypos)
456 for (pos = AVCHROMA_LOC_UNSPECIFIED + 1; pos < AVCHROMA_LOC_NB; pos++) {
457 if (avcodec_enum_to_chroma_pos(&xout, &yout, pos) == 0 && xout == xpos && yout == ypos)
460 return AVCHROMA_LOC_UNSPECIFIED;
463 int avcodec_fill_audio_frame(AVFrame *frame, int nb_channels,
464 enum AVSampleFormat sample_fmt, const uint8_t *buf,
465 int buf_size, int align)
467 int ch, planar, needed_size, ret = 0;
469 needed_size = av_samples_get_buffer_size(NULL, nb_channels,
470 frame->nb_samples, sample_fmt,
472 if (buf_size < needed_size)
473 return AVERROR(EINVAL);
475 planar = av_sample_fmt_is_planar(sample_fmt);
476 if (planar && nb_channels > AV_NUM_DATA_POINTERS) {
477 if (!(frame->extended_data = av_mallocz_array(nb_channels,
478 sizeof(*frame->extended_data))))
479 return AVERROR(ENOMEM);
481 frame->extended_data = frame->data;
484 if ((ret = av_samples_fill_arrays(frame->extended_data, &frame->linesize[0],
485 (uint8_t *)(intptr_t)buf, nb_channels, frame->nb_samples,
486 sample_fmt, align)) < 0) {
487 if (frame->extended_data != frame->data)
488 av_freep(&frame->extended_data);
491 if (frame->extended_data != frame->data) {
492 for (ch = 0; ch < AV_NUM_DATA_POINTERS; ch++)
493 frame->data[ch] = frame->extended_data[ch];
499 static int update_frame_pool(AVCodecContext *avctx, AVFrame *frame)
501 FramePool *pool = avctx->internal->pool;
504 switch (avctx->codec_type) {
505 case AVMEDIA_TYPE_VIDEO: {
508 int w = frame->width;
509 int h = frame->height;
510 int tmpsize, unaligned;
512 if (pool->format == frame->format &&
513 pool->width == frame->width && pool->height == frame->height)
516 avcodec_align_dimensions2(avctx, &w, &h, pool->stride_align);
518 if (!(avctx->flags & CODEC_FLAG_EMU_EDGE)) {
524 // NOTE: do not align linesizes individually, this breaks e.g. assumptions
525 // that linesize[0] == 2*linesize[1] in the MPEG-encoder for 4:2:2
526 av_image_fill_linesizes(picture.linesize, avctx->pix_fmt, w);
527 // increase alignment of w for next try (rhs gives the lowest bit set in w)
531 for (i = 0; i < 4; i++)
532 unaligned |= picture.linesize[i] % pool->stride_align[i];
535 tmpsize = av_image_fill_pointers(picture.data, avctx->pix_fmt, h,
536 NULL, picture.linesize);
540 for (i = 0; i < 3 && picture.data[i + 1]; i++)
541 size[i] = picture.data[i + 1] - picture.data[i];
542 size[i] = tmpsize - (picture.data[i] - picture.data[0]);
544 for (i = 0; i < 4; i++) {
545 av_buffer_pool_uninit(&pool->pools[i]);
546 pool->linesize[i] = picture.linesize[i];
548 pool->pools[i] = av_buffer_pool_init(size[i] + 16 + STRIDE_ALIGN - 1,
549 CONFIG_MEMORY_POISONING ?
552 if (!pool->pools[i]) {
553 ret = AVERROR(ENOMEM);
558 pool->format = frame->format;
559 pool->width = frame->width;
560 pool->height = frame->height;
564 case AVMEDIA_TYPE_AUDIO: {
565 int ch = av_frame_get_channels(frame); //av_get_channel_layout_nb_channels(frame->channel_layout);
566 int planar = av_sample_fmt_is_planar(frame->format);
567 int planes = planar ? ch : 1;
569 if (pool->format == frame->format && pool->planes == planes &&
570 pool->channels == ch && frame->nb_samples == pool->samples)
573 av_buffer_pool_uninit(&pool->pools[0]);
574 ret = av_samples_get_buffer_size(&pool->linesize[0], ch,
575 frame->nb_samples, frame->format, 0);
579 pool->pools[0] = av_buffer_pool_init(pool->linesize[0], NULL);
580 if (!pool->pools[0]) {
581 ret = AVERROR(ENOMEM);
585 pool->format = frame->format;
586 pool->planes = planes;
588 pool->samples = frame->nb_samples;
591 default: av_assert0(0);
595 for (i = 0; i < 4; i++)
596 av_buffer_pool_uninit(&pool->pools[i]);
598 pool->planes = pool->channels = pool->samples = 0;
599 pool->width = pool->height = 0;
603 static int audio_get_buffer(AVCodecContext *avctx, AVFrame *frame)
605 FramePool *pool = avctx->internal->pool;
606 int planes = pool->planes;
609 frame->linesize[0] = pool->linesize[0];
611 if (planes > AV_NUM_DATA_POINTERS) {
612 frame->extended_data = av_mallocz_array(planes, sizeof(*frame->extended_data));
613 frame->nb_extended_buf = planes - AV_NUM_DATA_POINTERS;
614 frame->extended_buf = av_mallocz_array(frame->nb_extended_buf,
615 sizeof(*frame->extended_buf));
616 if (!frame->extended_data || !frame->extended_buf) {
617 av_freep(&frame->extended_data);
618 av_freep(&frame->extended_buf);
619 return AVERROR(ENOMEM);
622 frame->extended_data = frame->data;
623 av_assert0(frame->nb_extended_buf == 0);
626 for (i = 0; i < FFMIN(planes, AV_NUM_DATA_POINTERS); i++) {
627 frame->buf[i] = av_buffer_pool_get(pool->pools[0]);
630 frame->extended_data[i] = frame->data[i] = frame->buf[i]->data;
632 for (i = 0; i < frame->nb_extended_buf; i++) {
633 frame->extended_buf[i] = av_buffer_pool_get(pool->pools[0]);
634 if (!frame->extended_buf[i])
636 frame->extended_data[i + AV_NUM_DATA_POINTERS] = frame->extended_buf[i]->data;
639 if (avctx->debug & FF_DEBUG_BUFFERS)
640 av_log(avctx, AV_LOG_DEBUG, "default_get_buffer called on frame %p", frame);
644 av_frame_unref(frame);
645 return AVERROR(ENOMEM);
648 static int video_get_buffer(AVCodecContext *s, AVFrame *pic)
650 FramePool *pool = s->internal->pool;
651 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pic->format);
652 int pixel_size = desc->comp[0].step_minus1 + 1;
653 int h_chroma_shift, v_chroma_shift;
656 if (pic->data[0] != NULL) {
657 av_log(s, AV_LOG_ERROR, "pic->data[0]!=NULL in avcodec_default_get_buffer\n");
661 memset(pic->data, 0, sizeof(pic->data));
662 pic->extended_data = pic->data;
664 av_pix_fmt_get_chroma_sub_sample(s->pix_fmt, &h_chroma_shift, &v_chroma_shift);
666 for (i = 0; i < 4 && pool->pools[i]; i++) {
667 const int h_shift = i == 0 ? 0 : h_chroma_shift;
668 const int v_shift = i == 0 ? 0 : v_chroma_shift;
669 int is_planar = pool->pools[2] || (i==0 && s->pix_fmt == AV_PIX_FMT_GRAY8);
671 pic->linesize[i] = pool->linesize[i];
673 pic->buf[i] = av_buffer_pool_get(pool->pools[i]);
677 // no edge if EDGE EMU or not planar YUV
678 if ((s->flags & CODEC_FLAG_EMU_EDGE) || !is_planar)
679 pic->data[i] = pic->buf[i]->data;
681 pic->data[i] = pic->buf[i]->data +
682 FFALIGN((pic->linesize[i] * EDGE_WIDTH >> v_shift) +
683 (pixel_size * EDGE_WIDTH >> h_shift), pool->stride_align[i]);
686 for (; i < AV_NUM_DATA_POINTERS; i++) {
688 pic->linesize[i] = 0;
690 if (pic->data[1] && !pic->data[2])
691 avpriv_set_systematic_pal2((uint32_t *)pic->data[1], s->pix_fmt);
693 if (s->debug & FF_DEBUG_BUFFERS)
694 av_log(s, AV_LOG_DEBUG, "default_get_buffer called on pic %p\n", pic);
699 return AVERROR(ENOMEM);
702 void avpriv_color_frame(AVFrame *frame, const int c[4])
704 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(frame->format);
707 av_assert0(desc->flags & AV_PIX_FMT_FLAG_PLANAR);
709 for (p = 0; p<desc->nb_components; p++) {
710 uint8_t *dst = frame->data[p];
711 int is_chroma = p == 1 || p == 2;
712 int bytes = is_chroma ? FF_CEIL_RSHIFT(frame->width, desc->log2_chroma_w) : frame->width;
713 int height = is_chroma ? FF_CEIL_RSHIFT(frame->height, desc->log2_chroma_h) : frame->height;
714 for (y = 0; y < height; y++) {
715 if (desc->comp[0].depth_minus1 >= 8) {
716 for (x = 0; x<bytes; x++)
717 ((uint16_t*)dst)[x] = c[p];
719 memset(dst, c[p], bytes);
720 dst += frame->linesize[p];
725 int avcodec_default_get_buffer2(AVCodecContext *avctx, AVFrame *frame, int flags)
729 if ((ret = update_frame_pool(avctx, frame)) < 0)
732 #if FF_API_GET_BUFFER
733 FF_DISABLE_DEPRECATION_WARNINGS
734 frame->type = FF_BUFFER_TYPE_INTERNAL;
735 FF_ENABLE_DEPRECATION_WARNINGS
738 switch (avctx->codec_type) {
739 case AVMEDIA_TYPE_VIDEO:
740 return video_get_buffer(avctx, frame);
741 case AVMEDIA_TYPE_AUDIO:
742 return audio_get_buffer(avctx, frame);
748 int ff_init_buffer_info(AVCodecContext *avctx, AVFrame *frame)
750 AVPacket *pkt = avctx->internal->pkt;
754 AVFrameSideData *frame_sd;
756 frame->pkt_pts = pkt->pts;
757 av_frame_set_pkt_pos (frame, pkt->pos);
758 av_frame_set_pkt_duration(frame, pkt->duration);
759 av_frame_set_pkt_size (frame, pkt->size);
761 /* copy the replaygain data to the output frame */
762 packet_sd = av_packet_get_side_data(pkt, AV_PKT_DATA_REPLAYGAIN, &size);
764 frame_sd = av_frame_new_side_data(frame, AV_FRAME_DATA_REPLAYGAIN, size);
766 return AVERROR(ENOMEM);
768 memcpy(frame_sd->data, packet_sd, size);
771 /* copy the displaymatrix to the output frame */
772 packet_sd = av_packet_get_side_data(pkt, AV_PKT_DATA_DISPLAYMATRIX, &size);
774 frame_sd = av_frame_new_side_data(frame, AV_FRAME_DATA_DISPLAYMATRIX, size);
776 return AVERROR(ENOMEM);
778 memcpy(frame_sd->data, packet_sd, size);
781 frame->pkt_pts = AV_NOPTS_VALUE;
782 av_frame_set_pkt_pos (frame, -1);
783 av_frame_set_pkt_duration(frame, 0);
784 av_frame_set_pkt_size (frame, -1);
786 frame->reordered_opaque = avctx->reordered_opaque;
788 #if FF_API_AVFRAME_COLORSPACE
789 if (frame->color_primaries == AVCOL_PRI_UNSPECIFIED)
790 frame->color_primaries = avctx->color_primaries;
791 if (frame->color_trc == AVCOL_TRC_UNSPECIFIED)
792 frame->color_trc = avctx->color_trc;
793 if (av_frame_get_colorspace(frame) == AVCOL_SPC_UNSPECIFIED)
794 av_frame_set_colorspace(frame, avctx->colorspace);
795 if (av_frame_get_color_range(frame) == AVCOL_RANGE_UNSPECIFIED)
796 av_frame_set_color_range(frame, avctx->color_range);
797 if (frame->chroma_location == AVCHROMA_LOC_UNSPECIFIED)
798 frame->chroma_location = avctx->chroma_sample_location;
801 switch (avctx->codec->type) {
802 case AVMEDIA_TYPE_VIDEO:
803 frame->format = avctx->pix_fmt;
804 if (!frame->sample_aspect_ratio.num)
805 frame->sample_aspect_ratio = avctx->sample_aspect_ratio;
807 case AVMEDIA_TYPE_AUDIO:
808 if (!frame->sample_rate)
809 frame->sample_rate = avctx->sample_rate;
810 if (frame->format < 0)
811 frame->format = avctx->sample_fmt;
812 if (!frame->channel_layout) {
813 if (avctx->channel_layout) {
814 if (av_get_channel_layout_nb_channels(avctx->channel_layout) !=
816 av_log(avctx, AV_LOG_ERROR, "Inconsistent channel "
818 return AVERROR(EINVAL);
821 frame->channel_layout = avctx->channel_layout;
823 if (avctx->channels > FF_SANE_NB_CHANNELS) {
824 av_log(avctx, AV_LOG_ERROR, "Too many channels: %d.\n",
826 return AVERROR(ENOSYS);
830 av_frame_set_channels(frame, avctx->channels);
836 #if FF_API_GET_BUFFER
837 FF_DISABLE_DEPRECATION_WARNINGS
838 int avcodec_default_get_buffer(AVCodecContext *avctx, AVFrame *frame)
840 return avcodec_default_get_buffer2(avctx, frame, 0);
843 typedef struct CompatReleaseBufPriv {
844 AVCodecContext avctx;
846 uint8_t avframe_padding[1024]; // hack to allow linking to a avutil with larger AVFrame
847 } CompatReleaseBufPriv;
849 static void compat_free_buffer(void *opaque, uint8_t *data)
851 CompatReleaseBufPriv *priv = opaque;
852 if (priv->avctx.release_buffer)
853 priv->avctx.release_buffer(&priv->avctx, &priv->frame);
857 static void compat_release_buffer(void *opaque, uint8_t *data)
859 AVBufferRef *buf = opaque;
860 av_buffer_unref(&buf);
862 FF_ENABLE_DEPRECATION_WARNINGS
865 int ff_decode_frame_props(AVCodecContext *avctx, AVFrame *frame)
867 return ff_init_buffer_info(avctx, frame);
870 static int get_buffer_internal(AVCodecContext *avctx, AVFrame *frame, int flags)
872 const AVHWAccel *hwaccel = avctx->hwaccel;
873 int override_dimensions = 1;
876 if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
877 if ((ret = av_image_check_size(avctx->width, avctx->height, 0, avctx)) < 0 || avctx->pix_fmt<0) {
878 av_log(avctx, AV_LOG_ERROR, "video_get_buffer: image parameters invalid\n");
879 return AVERROR(EINVAL);
882 if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
883 if (frame->width <= 0 || frame->height <= 0) {
884 frame->width = FFMAX(avctx->width, FF_CEIL_RSHIFT(avctx->coded_width, avctx->lowres));
885 frame->height = FFMAX(avctx->height, FF_CEIL_RSHIFT(avctx->coded_height, avctx->lowres));
886 override_dimensions = 0;
889 ret = ff_decode_frame_props(avctx, frame);
892 if ((ret = ff_init_buffer_info(avctx, frame)) < 0)
895 if (hwaccel && hwaccel->alloc_frame) {
896 ret = hwaccel->alloc_frame(avctx, frame);
900 #if FF_API_GET_BUFFER
901 FF_DISABLE_DEPRECATION_WARNINGS
903 * Wrap an old get_buffer()-allocated buffer in a bunch of AVBuffers.
904 * We wrap each plane in its own AVBuffer. Each of those has a reference to
905 * a dummy AVBuffer as its private data, unreffing it on free.
906 * When all the planes are freed, the dummy buffer's free callback calls
909 if (avctx->get_buffer) {
910 CompatReleaseBufPriv *priv = NULL;
911 AVBufferRef *dummy_buf = NULL;
914 if (flags & AV_GET_BUFFER_FLAG_REF)
915 frame->reference = 1;
917 ret = avctx->get_buffer(avctx, frame);
921 /* return if the buffers are already set up
922 * this would happen e.g. when a custom get_buffer() calls
923 * avcodec_default_get_buffer
928 priv = av_mallocz(sizeof(*priv));
930 ret = AVERROR(ENOMEM);
933 priv->avctx = *avctx;
934 priv->frame = *frame;
936 dummy_buf = av_buffer_create(NULL, 0, compat_free_buffer, priv, 0);
938 ret = AVERROR(ENOMEM);
942 #define WRAP_PLANE(ref_out, data, data_size) \
944 AVBufferRef *dummy_ref = av_buffer_ref(dummy_buf); \
946 ret = AVERROR(ENOMEM); \
949 ref_out = av_buffer_create(data, data_size, compat_release_buffer, \
952 av_frame_unref(frame); \
953 ret = AVERROR(ENOMEM); \
958 if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
959 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(frame->format);
961 planes = av_pix_fmt_count_planes(frame->format);
962 /* workaround for AVHWAccel plane count of 0, buf[0] is used as
963 check for allocated buffers: make libavcodec happy */
964 if (desc && desc->flags & AV_PIX_FMT_FLAG_HWACCEL)
966 if (!desc || planes <= 0) {
967 ret = AVERROR(EINVAL);
971 for (i = 0; i < planes; i++) {
972 int v_shift = (i == 1 || i == 2) ? desc->log2_chroma_h : 0;
973 int plane_size = (frame->height >> v_shift) * frame->linesize[i];
975 WRAP_PLANE(frame->buf[i], frame->data[i], plane_size);
978 int planar = av_sample_fmt_is_planar(frame->format);
979 planes = planar ? avctx->channels : 1;
981 if (planes > FF_ARRAY_ELEMS(frame->buf)) {
982 frame->nb_extended_buf = planes - FF_ARRAY_ELEMS(frame->buf);
983 frame->extended_buf = av_malloc_array(sizeof(*frame->extended_buf),
984 frame->nb_extended_buf);
985 if (!frame->extended_buf) {
986 ret = AVERROR(ENOMEM);
991 for (i = 0; i < FFMIN(planes, FF_ARRAY_ELEMS(frame->buf)); i++)
992 WRAP_PLANE(frame->buf[i], frame->extended_data[i], frame->linesize[0]);
994 for (i = 0; i < frame->nb_extended_buf; i++)
995 WRAP_PLANE(frame->extended_buf[i],
996 frame->extended_data[i + FF_ARRAY_ELEMS(frame->buf)],
1000 av_buffer_unref(&dummy_buf);
1003 frame->width = avctx->width;
1004 frame->height = avctx->height;
1009 avctx->release_buffer(avctx, frame);
1011 av_buffer_unref(&dummy_buf);
1014 FF_ENABLE_DEPRECATION_WARNINGS
1017 ret = avctx->get_buffer2(avctx, frame, flags);
1020 if (avctx->codec_type == AVMEDIA_TYPE_VIDEO && !override_dimensions) {
1021 frame->width = avctx->width;
1022 frame->height = avctx->height;
1028 int ff_get_buffer(AVCodecContext *avctx, AVFrame *frame, int flags)
1030 int ret = get_buffer_internal(avctx, frame, flags);
1032 av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
1036 static int reget_buffer_internal(AVCodecContext *avctx, AVFrame *frame)
1041 av_assert0(avctx->codec_type == AVMEDIA_TYPE_VIDEO);
1043 if (frame->data[0] && (frame->width != avctx->width || frame->height != avctx->height || frame->format != avctx->pix_fmt)) {
1044 av_log(avctx, AV_LOG_WARNING, "Picture changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s in reget buffer()\n",
1045 frame->width, frame->height, av_get_pix_fmt_name(frame->format), avctx->width, avctx->height, av_get_pix_fmt_name(avctx->pix_fmt));
1046 av_frame_unref(frame);
1049 ff_init_buffer_info(avctx, frame);
1051 if (!frame->data[0])
1052 return ff_get_buffer(avctx, frame, AV_GET_BUFFER_FLAG_REF);
1054 if (av_frame_is_writable(frame))
1055 return ff_decode_frame_props(avctx, frame);
1057 tmp = av_frame_alloc();
1059 return AVERROR(ENOMEM);
1061 av_frame_move_ref(tmp, frame);
1063 ret = ff_get_buffer(avctx, frame, AV_GET_BUFFER_FLAG_REF);
1065 av_frame_free(&tmp);
1069 av_frame_copy(frame, tmp);
1070 av_frame_free(&tmp);
1075 int ff_reget_buffer(AVCodecContext *avctx, AVFrame *frame)
1077 int ret = reget_buffer_internal(avctx, frame);
1079 av_log(avctx, AV_LOG_ERROR, "reget_buffer() failed\n");
1083 #if FF_API_GET_BUFFER
1084 void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic)
1086 av_assert0(s->codec_type == AVMEDIA_TYPE_VIDEO);
1088 av_frame_unref(pic);
1091 int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic)
1098 int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2), void *arg, int *ret, int count, int size)
1102 for (i = 0; i < count; i++) {
1103 int r = func(c, (char *)arg + i * size);
1110 int avcodec_default_execute2(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2, int jobnr, int threadnr), void *arg, int *ret, int count)
1114 for (i = 0; i < count; i++) {
1115 int r = func(c, arg, i, 0);
1122 enum AVPixelFormat avpriv_find_pix_fmt(const PixelFormatTag *tags,
1123 unsigned int fourcc)
1125 while (tags->pix_fmt >= 0) {
1126 if (tags->fourcc == fourcc)
1127 return tags->pix_fmt;
1130 return AV_PIX_FMT_NONE;
1133 static int is_hwaccel_pix_fmt(enum AVPixelFormat pix_fmt)
1135 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
1136 return desc->flags & AV_PIX_FMT_FLAG_HWACCEL;
1139 enum AVPixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum AVPixelFormat *fmt)
1141 while (*fmt != AV_PIX_FMT_NONE && is_hwaccel_pix_fmt(*fmt))
1146 static AVHWAccel *find_hwaccel(enum AVCodecID codec_id,
1147 enum AVPixelFormat pix_fmt)
1149 AVHWAccel *hwaccel = NULL;
1151 while ((hwaccel = av_hwaccel_next(hwaccel)))
1152 if (hwaccel->id == codec_id
1153 && hwaccel->pix_fmt == pix_fmt)
1159 int ff_get_format(AVCodecContext *avctx, const enum AVPixelFormat *fmt)
1161 const AVPixFmtDescriptor *desc;
1162 enum AVPixelFormat ret = avctx->get_format(avctx, fmt);
1164 desc = av_pix_fmt_desc_get(ret);
1166 return AV_PIX_FMT_NONE;
1168 if (avctx->hwaccel && avctx->hwaccel->uninit)
1169 avctx->hwaccel->uninit(avctx);
1170 av_freep(&avctx->internal->hwaccel_priv_data);
1171 avctx->hwaccel = NULL;
1173 if (desc->flags & AV_PIX_FMT_FLAG_HWACCEL &&
1174 !(avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU)) {
1178 hwaccel = find_hwaccel(avctx->codec_id, ret);
1180 av_log(avctx, AV_LOG_ERROR,
1181 "Could not find an AVHWAccel for the pixel format: %s",
1183 return AV_PIX_FMT_NONE;
1186 if (hwaccel->priv_data_size) {
1187 avctx->internal->hwaccel_priv_data = av_mallocz(hwaccel->priv_data_size);
1188 if (!avctx->internal->hwaccel_priv_data)
1189 return AV_PIX_FMT_NONE;
1192 if (hwaccel->init) {
1193 err = hwaccel->init(avctx);
1195 av_freep(&avctx->internal->hwaccel_priv_data);
1196 return AV_PIX_FMT_NONE;
1199 avctx->hwaccel = hwaccel;
1205 #if FF_API_AVFRAME_LAVC
1206 void avcodec_get_frame_defaults(AVFrame *frame)
1208 #if LIBAVCODEC_VERSION_MAJOR >= 55
1209 // extended_data should explicitly be freed when needed, this code is unsafe currently
1210 // also this is not compatible to the <55 ABI/API
1211 if (frame->extended_data != frame->data && 0)
1212 av_freep(&frame->extended_data);
1215 memset(frame, 0, sizeof(AVFrame));
1216 av_frame_unref(frame);
1219 AVFrame *avcodec_alloc_frame(void)
1221 return av_frame_alloc();
1224 void avcodec_free_frame(AVFrame **frame)
1226 av_frame_free(frame);
1230 MAKE_ACCESSORS(AVCodecContext, codec, AVRational, pkt_timebase)
1231 MAKE_ACCESSORS(AVCodecContext, codec, const AVCodecDescriptor *, codec_descriptor)
1232 MAKE_ACCESSORS(AVCodecContext, codec, int, lowres)
1233 MAKE_ACCESSORS(AVCodecContext, codec, int, seek_preroll)
1234 MAKE_ACCESSORS(AVCodecContext, codec, uint16_t*, chroma_intra_matrix)
1236 int av_codec_get_max_lowres(const AVCodec *codec)
1238 return codec->max_lowres;
1241 static void avcodec_get_subtitle_defaults(AVSubtitle *sub)
1243 memset(sub, 0, sizeof(*sub));
1244 sub->pts = AV_NOPTS_VALUE;
1247 static int get_bit_rate(AVCodecContext *ctx)
1250 int bits_per_sample;
1252 switch (ctx->codec_type) {
1253 case AVMEDIA_TYPE_VIDEO:
1254 case AVMEDIA_TYPE_DATA:
1255 case AVMEDIA_TYPE_SUBTITLE:
1256 case AVMEDIA_TYPE_ATTACHMENT:
1257 bit_rate = ctx->bit_rate;
1259 case AVMEDIA_TYPE_AUDIO:
1260 bits_per_sample = av_get_bits_per_sample(ctx->codec_id);
1261 bit_rate = bits_per_sample ? ctx->sample_rate * ctx->channels * bits_per_sample : ctx->bit_rate;
1270 int attribute_align_arg ff_codec_open2_recursive(AVCodecContext *avctx, const AVCodec *codec, AVDictionary **options)
1274 ff_unlock_avcodec();
1276 ret = avcodec_open2(avctx, codec, options);
1278 ff_lock_avcodec(avctx);
1282 int attribute_align_arg avcodec_open2(AVCodecContext *avctx, const AVCodec *codec, AVDictionary **options)
1285 AVDictionary *tmp = NULL;
1287 if (avcodec_is_open(avctx))
1290 if ((!codec && !avctx->codec)) {
1291 av_log(avctx, AV_LOG_ERROR, "No codec provided to avcodec_open2()\n");
1292 return AVERROR(EINVAL);
1294 if ((codec && avctx->codec && codec != avctx->codec)) {
1295 av_log(avctx, AV_LOG_ERROR, "This AVCodecContext was allocated for %s, "
1296 "but %s passed to avcodec_open2()\n", avctx->codec->name, codec->name);
1297 return AVERROR(EINVAL);
1300 codec = avctx->codec;
1302 if (avctx->extradata_size < 0 || avctx->extradata_size >= FF_MAX_EXTRADATA_SIZE)
1303 return AVERROR(EINVAL);
1306 av_dict_copy(&tmp, *options, 0);
1308 ret = ff_lock_avcodec(avctx);
1312 avctx->internal = av_mallocz(sizeof(AVCodecInternal));
1313 if (!avctx->internal) {
1314 ret = AVERROR(ENOMEM);
1318 avctx->internal->pool = av_mallocz(sizeof(*avctx->internal->pool));
1319 if (!avctx->internal->pool) {
1320 ret = AVERROR(ENOMEM);
1324 avctx->internal->to_free = av_frame_alloc();
1325 if (!avctx->internal->to_free) {
1326 ret = AVERROR(ENOMEM);
1330 if (codec->priv_data_size > 0) {
1331 if (!avctx->priv_data) {
1332 avctx->priv_data = av_mallocz(codec->priv_data_size);
1333 if (!avctx->priv_data) {
1334 ret = AVERROR(ENOMEM);
1337 if (codec->priv_class) {
1338 *(const AVClass **)avctx->priv_data = codec->priv_class;
1339 av_opt_set_defaults(avctx->priv_data);
1342 if (codec->priv_class && (ret = av_opt_set_dict(avctx->priv_data, &tmp)) < 0)
1345 avctx->priv_data = NULL;
1347 if ((ret = av_opt_set_dict(avctx, &tmp)) < 0)
1350 // only call ff_set_dimensions() for non H.264/VP6F codecs so as not to overwrite previously setup dimensions
1351 if (!(avctx->coded_width && avctx->coded_height && avctx->width && avctx->height &&
1352 (avctx->codec_id == AV_CODEC_ID_H264 || avctx->codec_id == AV_CODEC_ID_VP6F))) {
1353 if (avctx->coded_width && avctx->coded_height)
1354 ret = ff_set_dimensions(avctx, avctx->coded_width, avctx->coded_height);
1355 else if (avctx->width && avctx->height)
1356 ret = ff_set_dimensions(avctx, avctx->width, avctx->height);
1361 if ((avctx->coded_width || avctx->coded_height || avctx->width || avctx->height)
1362 && ( av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx) < 0
1363 || av_image_check_size(avctx->width, avctx->height, 0, avctx) < 0)) {
1364 av_log(avctx, AV_LOG_WARNING, "Ignoring invalid width/height values\n");
1365 ff_set_dimensions(avctx, 0, 0);
1368 /* if the decoder init function was already called previously,
1369 * free the already allocated subtitle_header before overwriting it */
1370 if (av_codec_is_decoder(codec))
1371 av_freep(&avctx->subtitle_header);
1373 if (avctx->channels > FF_SANE_NB_CHANNELS) {
1374 ret = AVERROR(EINVAL);
1378 avctx->codec = codec;
1379 if ((avctx->codec_type == AVMEDIA_TYPE_UNKNOWN || avctx->codec_type == codec->type) &&
1380 avctx->codec_id == AV_CODEC_ID_NONE) {
1381 avctx->codec_type = codec->type;
1382 avctx->codec_id = codec->id;
1384 if (avctx->codec_id != codec->id || (avctx->codec_type != codec->type
1385 && avctx->codec_type != AVMEDIA_TYPE_ATTACHMENT)) {
1386 av_log(avctx, AV_LOG_ERROR, "Codec type or id mismatches\n");
1387 ret = AVERROR(EINVAL);
1390 avctx->frame_number = 0;
1391 avctx->codec_descriptor = avcodec_descriptor_get(avctx->codec_id);
1393 if (avctx->codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
1394 avctx->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
1395 const char *codec_string = av_codec_is_encoder(codec) ? "encoder" : "decoder";
1397 av_log(avctx, AV_LOG_ERROR,
1398 "The %s '%s' is experimental but experimental codecs are not enabled, "
1399 "add '-strict %d' if you want to use it.\n",
1400 codec_string, codec->name, FF_COMPLIANCE_EXPERIMENTAL);
1401 codec2 = av_codec_is_encoder(codec) ? avcodec_find_encoder(codec->id) : avcodec_find_decoder(codec->id);
1402 if (!(codec2->capabilities & CODEC_CAP_EXPERIMENTAL))
1403 av_log(avctx, AV_LOG_ERROR, "Alternatively use the non experimental %s '%s'.\n",
1404 codec_string, codec2->name);
1405 ret = AVERROR_EXPERIMENTAL;
1409 if (avctx->codec_type == AVMEDIA_TYPE_AUDIO &&
1410 (!avctx->time_base.num || !avctx->time_base.den)) {
1411 avctx->time_base.num = 1;
1412 avctx->time_base.den = avctx->sample_rate;
1416 av_log(avctx, AV_LOG_WARNING, "Warning: not compiled with thread support, using thread emulation\n");
1418 if (CONFIG_FRAME_THREAD_ENCODER) {
1419 ff_unlock_avcodec(); //we will instanciate a few encoders thus kick the counter to prevent false detection of a problem
1420 ret = ff_frame_thread_encoder_init(avctx, options ? *options : NULL);
1421 ff_lock_avcodec(avctx);
1427 && !(avctx->internal->frame_thread_encoder && (avctx->active_thread_type&FF_THREAD_FRAME))) {
1428 ret = ff_thread_init(avctx);
1433 if (!HAVE_THREADS && !(codec->capabilities & CODEC_CAP_AUTO_THREADS))
1434 avctx->thread_count = 1;
1436 if (avctx->codec->max_lowres < avctx->lowres || avctx->lowres < 0) {
1437 av_log(avctx, AV_LOG_ERROR, "The maximum value for lowres supported by the decoder is %d\n",
1438 avctx->codec->max_lowres);
1439 ret = AVERROR(EINVAL);
1443 if (av_codec_is_encoder(avctx->codec)) {
1445 if (avctx->codec->sample_fmts) {
1446 for (i = 0; avctx->codec->sample_fmts[i] != AV_SAMPLE_FMT_NONE; i++) {
1447 if (avctx->sample_fmt == avctx->codec->sample_fmts[i])
1449 if (avctx->channels == 1 &&
1450 av_get_planar_sample_fmt(avctx->sample_fmt) ==
1451 av_get_planar_sample_fmt(avctx->codec->sample_fmts[i])) {
1452 avctx->sample_fmt = avctx->codec->sample_fmts[i];
1456 if (avctx->codec->sample_fmts[i] == AV_SAMPLE_FMT_NONE) {
1458 snprintf(buf, sizeof(buf), "%d", avctx->sample_fmt);
1459 av_log(avctx, AV_LOG_ERROR, "Specified sample format %s is invalid or not supported\n",
1460 (char *)av_x_if_null(av_get_sample_fmt_name(avctx->sample_fmt), buf));
1461 ret = AVERROR(EINVAL);
1465 if (avctx->codec->pix_fmts) {
1466 for (i = 0; avctx->codec->pix_fmts[i] != AV_PIX_FMT_NONE; i++)
1467 if (avctx->pix_fmt == avctx->codec->pix_fmts[i])
1469 if (avctx->codec->pix_fmts[i] == AV_PIX_FMT_NONE
1470 && !((avctx->codec_id == AV_CODEC_ID_MJPEG || avctx->codec_id == AV_CODEC_ID_LJPEG)
1471 && avctx->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL)) {
1473 snprintf(buf, sizeof(buf), "%d", avctx->pix_fmt);
1474 av_log(avctx, AV_LOG_ERROR, "Specified pixel format %s is invalid or not supported\n",
1475 (char *)av_x_if_null(av_get_pix_fmt_name(avctx->pix_fmt), buf));
1476 ret = AVERROR(EINVAL);
1480 if (avctx->codec->supported_samplerates) {
1481 for (i = 0; avctx->codec->supported_samplerates[i] != 0; i++)
1482 if (avctx->sample_rate == avctx->codec->supported_samplerates[i])
1484 if (avctx->codec->supported_samplerates[i] == 0) {
1485 av_log(avctx, AV_LOG_ERROR, "Specified sample rate %d is not supported\n",
1486 avctx->sample_rate);
1487 ret = AVERROR(EINVAL);
1491 if (avctx->codec->channel_layouts) {
1492 if (!avctx->channel_layout) {
1493 av_log(avctx, AV_LOG_WARNING, "Channel layout not specified\n");
1495 for (i = 0; avctx->codec->channel_layouts[i] != 0; i++)
1496 if (avctx->channel_layout == avctx->codec->channel_layouts[i])
1498 if (avctx->codec->channel_layouts[i] == 0) {
1500 av_get_channel_layout_string(buf, sizeof(buf), -1, avctx->channel_layout);
1501 av_log(avctx, AV_LOG_ERROR, "Specified channel layout '%s' is not supported\n", buf);
1502 ret = AVERROR(EINVAL);
1507 if (avctx->channel_layout && avctx->channels) {
1508 int channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
1509 if (channels != avctx->channels) {
1511 av_get_channel_layout_string(buf, sizeof(buf), -1, avctx->channel_layout);
1512 av_log(avctx, AV_LOG_ERROR,
1513 "Channel layout '%s' with %d channels does not match number of specified channels %d\n",
1514 buf, channels, avctx->channels);
1515 ret = AVERROR(EINVAL);
1518 } else if (avctx->channel_layout) {
1519 avctx->channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
1521 if(avctx->codec_type == AVMEDIA_TYPE_VIDEO &&
1522 avctx->codec_id != AV_CODEC_ID_PNG // For mplayer
1524 if (avctx->width <= 0 || avctx->height <= 0) {
1525 av_log(avctx, AV_LOG_ERROR, "dimensions not set\n");
1526 ret = AVERROR(EINVAL);
1530 if ( (avctx->codec_type == AVMEDIA_TYPE_VIDEO || avctx->codec_type == AVMEDIA_TYPE_AUDIO)
1531 && avctx->bit_rate>0 && avctx->bit_rate<1000) {
1532 av_log(avctx, AV_LOG_WARNING, "Bitrate %d is extremely low, maybe you mean %dk\n", avctx->bit_rate, avctx->bit_rate);
1535 if (!avctx->rc_initial_buffer_occupancy)
1536 avctx->rc_initial_buffer_occupancy = avctx->rc_buffer_size * 3 / 4;
1539 avctx->pts_correction_num_faulty_pts =
1540 avctx->pts_correction_num_faulty_dts = 0;
1541 avctx->pts_correction_last_pts =
1542 avctx->pts_correction_last_dts = INT64_MIN;
1544 if ( avctx->codec->init && (!(avctx->active_thread_type&FF_THREAD_FRAME)
1545 || avctx->internal->frame_thread_encoder)) {
1546 ret = avctx->codec->init(avctx);
1554 if (av_codec_is_decoder(avctx->codec)) {
1555 if (!avctx->bit_rate)
1556 avctx->bit_rate = get_bit_rate(avctx);
1557 /* validate channel layout from the decoder */
1558 if (avctx->channel_layout) {
1559 int channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
1560 if (!avctx->channels)
1561 avctx->channels = channels;
1562 else if (channels != avctx->channels) {
1564 av_get_channel_layout_string(buf, sizeof(buf), -1, avctx->channel_layout);
1565 av_log(avctx, AV_LOG_WARNING,
1566 "Channel layout '%s' with %d channels does not match specified number of channels %d: "
1567 "ignoring specified channel layout\n",
1568 buf, channels, avctx->channels);
1569 avctx->channel_layout = 0;
1572 if (avctx->channels && avctx->channels < 0 ||
1573 avctx->channels > FF_SANE_NB_CHANNELS) {
1574 ret = AVERROR(EINVAL);
1577 if (avctx->sub_charenc) {
1578 if (avctx->codec_type != AVMEDIA_TYPE_SUBTITLE) {
1579 av_log(avctx, AV_LOG_ERROR, "Character encoding is only "
1580 "supported with subtitles codecs\n");
1581 ret = AVERROR(EINVAL);
1583 } else if (avctx->codec_descriptor->props & AV_CODEC_PROP_BITMAP_SUB) {
1584 av_log(avctx, AV_LOG_WARNING, "Codec '%s' is bitmap-based, "
1585 "subtitles character encoding will be ignored\n",
1586 avctx->codec_descriptor->name);
1587 avctx->sub_charenc_mode = FF_SUB_CHARENC_MODE_DO_NOTHING;
1589 /* input character encoding is set for a text based subtitle
1590 * codec at this point */
1591 if (avctx->sub_charenc_mode == FF_SUB_CHARENC_MODE_AUTOMATIC)
1592 avctx->sub_charenc_mode = FF_SUB_CHARENC_MODE_PRE_DECODER;
1594 if (avctx->sub_charenc_mode == FF_SUB_CHARENC_MODE_PRE_DECODER) {
1596 iconv_t cd = iconv_open("UTF-8", avctx->sub_charenc);
1597 if (cd == (iconv_t)-1) {
1598 av_log(avctx, AV_LOG_ERROR, "Unable to open iconv context "
1599 "with input character encoding \"%s\"\n", avctx->sub_charenc);
1600 ret = AVERROR(errno);
1605 av_log(avctx, AV_LOG_ERROR, "Character encoding subtitles "
1606 "conversion needs a libavcodec built with iconv support "
1607 "for this codec\n");
1608 ret = AVERROR(ENOSYS);
1616 ff_unlock_avcodec();
1618 av_dict_free(options);
1625 av_freep(&avctx->priv_data);
1626 if (avctx->internal) {
1627 av_frame_free(&avctx->internal->to_free);
1628 av_freep(&avctx->internal->pool);
1630 av_freep(&avctx->internal);
1631 avctx->codec = NULL;
1635 int ff_alloc_packet2(AVCodecContext *avctx, AVPacket *avpkt, int64_t size)
1637 if (avpkt->size < 0) {
1638 av_log(avctx, AV_LOG_ERROR, "Invalid negative user packet size %d\n", avpkt->size);
1639 return AVERROR(EINVAL);
1641 if (size < 0 || size > INT_MAX - FF_INPUT_BUFFER_PADDING_SIZE) {
1642 av_log(avctx, AV_LOG_ERROR, "Invalid minimum required packet size %"PRId64" (max allowed is %d)\n",
1643 size, INT_MAX - FF_INPUT_BUFFER_PADDING_SIZE);
1644 return AVERROR(EINVAL);
1648 av_assert0(!avpkt->data || avpkt->data != avctx->internal->byte_buffer);
1649 if (!avpkt->data || avpkt->size < size) {
1650 av_fast_padded_malloc(&avctx->internal->byte_buffer, &avctx->internal->byte_buffer_size, size);
1651 avpkt->data = avctx->internal->byte_buffer;
1652 avpkt->size = avctx->internal->byte_buffer_size;
1653 #if FF_API_DESTRUCT_PACKET
1654 FF_DISABLE_DEPRECATION_WARNINGS
1655 avpkt->destruct = NULL;
1656 FF_ENABLE_DEPRECATION_WARNINGS
1662 AVBufferRef *buf = avpkt->buf;
1663 #if FF_API_DESTRUCT_PACKET
1664 FF_DISABLE_DEPRECATION_WARNINGS
1665 void *destruct = avpkt->destruct;
1666 FF_ENABLE_DEPRECATION_WARNINGS
1669 if (avpkt->size < size) {
1670 av_log(avctx, AV_LOG_ERROR, "User packet is too small (%d < %"PRId64")\n", avpkt->size, size);
1671 return AVERROR(EINVAL);
1674 av_init_packet(avpkt);
1675 #if FF_API_DESTRUCT_PACKET
1676 FF_DISABLE_DEPRECATION_WARNINGS
1677 avpkt->destruct = destruct;
1678 FF_ENABLE_DEPRECATION_WARNINGS
1684 int ret = av_new_packet(avpkt, size);
1686 av_log(avctx, AV_LOG_ERROR, "Failed to allocate packet of size %"PRId64"\n", size);
1691 int ff_alloc_packet(AVPacket *avpkt, int size)
1693 return ff_alloc_packet2(NULL, avpkt, size);
1697 * Pad last frame with silence.
1699 static int pad_last_frame(AVCodecContext *s, AVFrame **dst, const AVFrame *src)
1701 AVFrame *frame = NULL;
1704 if (!(frame = av_frame_alloc()))
1705 return AVERROR(ENOMEM);
1707 frame->format = src->format;
1708 frame->channel_layout = src->channel_layout;
1709 av_frame_set_channels(frame, av_frame_get_channels(src));
1710 frame->nb_samples = s->frame_size;
1711 ret = av_frame_get_buffer(frame, 32);
1715 ret = av_frame_copy_props(frame, src);
1719 if ((ret = av_samples_copy(frame->extended_data, src->extended_data, 0, 0,
1720 src->nb_samples, s->channels, s->sample_fmt)) < 0)
1722 if ((ret = av_samples_set_silence(frame->extended_data, src->nb_samples,
1723 frame->nb_samples - src->nb_samples,
1724 s->channels, s->sample_fmt)) < 0)
1732 av_frame_free(&frame);
1736 int attribute_align_arg avcodec_encode_audio2(AVCodecContext *avctx,
1738 const AVFrame *frame,
1739 int *got_packet_ptr)
1741 AVFrame *extended_frame = NULL;
1742 AVFrame *padded_frame = NULL;
1744 AVPacket user_pkt = *avpkt;
1745 int needs_realloc = !user_pkt.data;
1747 *got_packet_ptr = 0;
1749 if (!(avctx->codec->capabilities & CODEC_CAP_DELAY) && !frame) {
1750 av_free_packet(avpkt);
1751 av_init_packet(avpkt);
1755 /* ensure that extended_data is properly set */
1756 if (frame && !frame->extended_data) {
1757 if (av_sample_fmt_is_planar(avctx->sample_fmt) &&
1758 avctx->channels > AV_NUM_DATA_POINTERS) {
1759 av_log(avctx, AV_LOG_ERROR, "Encoding to a planar sample format, "
1760 "with more than %d channels, but extended_data is not set.\n",
1761 AV_NUM_DATA_POINTERS);
1762 return AVERROR(EINVAL);
1764 av_log(avctx, AV_LOG_WARNING, "extended_data is not set.\n");
1766 extended_frame = av_frame_alloc();
1767 if (!extended_frame)
1768 return AVERROR(ENOMEM);
1770 memcpy(extended_frame, frame, sizeof(AVFrame));
1771 extended_frame->extended_data = extended_frame->data;
1772 frame = extended_frame;
1775 /* check for valid frame size */
1777 if (avctx->codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME) {
1778 if (frame->nb_samples > avctx->frame_size) {
1779 av_log(avctx, AV_LOG_ERROR, "more samples than frame size (avcodec_encode_audio2)\n");
1780 ret = AVERROR(EINVAL);
1783 } else if (!(avctx->codec->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE)) {
1784 if (frame->nb_samples < avctx->frame_size &&
1785 !avctx->internal->last_audio_frame) {
1786 ret = pad_last_frame(avctx, &padded_frame, frame);
1790 frame = padded_frame;
1791 avctx->internal->last_audio_frame = 1;
1794 if (frame->nb_samples != avctx->frame_size) {
1795 av_log(avctx, AV_LOG_ERROR, "nb_samples (%d) != frame_size (%d) (avcodec_encode_audio2)\n", frame->nb_samples, avctx->frame_size);
1796 ret = AVERROR(EINVAL);
1802 ret = avctx->codec->encode2(avctx, avpkt, frame, got_packet_ptr);
1804 if (*got_packet_ptr) {
1805 if (!(avctx->codec->capabilities & CODEC_CAP_DELAY)) {
1806 if (avpkt->pts == AV_NOPTS_VALUE)
1807 avpkt->pts = frame->pts;
1808 if (!avpkt->duration)
1809 avpkt->duration = ff_samples_to_time_base(avctx,
1812 avpkt->dts = avpkt->pts;
1817 if (avpkt->data && avpkt->data == avctx->internal->byte_buffer) {
1819 if (user_pkt.data) {
1820 if (user_pkt.size >= avpkt->size) {
1821 memcpy(user_pkt.data, avpkt->data, avpkt->size);
1823 av_log(avctx, AV_LOG_ERROR, "Provided packet is too small, needs to be %d\n", avpkt->size);
1824 avpkt->size = user_pkt.size;
1827 avpkt->buf = user_pkt.buf;
1828 avpkt->data = user_pkt.data;
1829 #if FF_API_DESTRUCT_PACKET
1830 FF_DISABLE_DEPRECATION_WARNINGS
1831 avpkt->destruct = user_pkt.destruct;
1832 FF_ENABLE_DEPRECATION_WARNINGS
1835 if (av_dup_packet(avpkt) < 0) {
1836 ret = AVERROR(ENOMEM);
1842 if (needs_realloc && avpkt->data) {
1843 ret = av_buffer_realloc(&avpkt->buf, avpkt->size + FF_INPUT_BUFFER_PADDING_SIZE);
1845 avpkt->data = avpkt->buf->data;
1848 avctx->frame_number++;
1851 if (ret < 0 || !*got_packet_ptr) {
1852 av_free_packet(avpkt);
1853 av_init_packet(avpkt);
1857 /* NOTE: if we add any audio encoders which output non-keyframe packets,
1858 * this needs to be moved to the encoders, but for now we can do it
1859 * here to simplify things */
1860 avpkt->flags |= AV_PKT_FLAG_KEY;
1863 av_frame_free(&padded_frame);
1864 av_free(extended_frame);
1869 #if FF_API_OLD_ENCODE_AUDIO
1870 int attribute_align_arg avcodec_encode_audio(AVCodecContext *avctx,
1871 uint8_t *buf, int buf_size,
1872 const short *samples)
1876 int ret, samples_size, got_packet;
1878 av_init_packet(&pkt);
1880 pkt.size = buf_size;
1883 frame = av_frame_alloc();
1885 return AVERROR(ENOMEM);
1887 if (avctx->frame_size) {
1888 frame->nb_samples = avctx->frame_size;
1890 /* if frame_size is not set, the number of samples must be
1891 * calculated from the buffer size */
1893 if (!av_get_bits_per_sample(avctx->codec_id)) {
1894 av_log(avctx, AV_LOG_ERROR, "avcodec_encode_audio() does not "
1895 "support this codec\n");
1896 av_frame_free(&frame);
1897 return AVERROR(EINVAL);
1899 nb_samples = (int64_t)buf_size * 8 /
1900 (av_get_bits_per_sample(avctx->codec_id) *
1902 if (nb_samples >= INT_MAX) {
1903 av_frame_free(&frame);
1904 return AVERROR(EINVAL);
1906 frame->nb_samples = nb_samples;
1909 /* it is assumed that the samples buffer is large enough based on the
1910 * relevant parameters */
1911 samples_size = av_samples_get_buffer_size(NULL, avctx->channels,
1913 avctx->sample_fmt, 1);
1914 if ((ret = avcodec_fill_audio_frame(frame, avctx->channels,
1916 (const uint8_t *)samples,
1917 samples_size, 1)) < 0) {
1918 av_frame_free(&frame);
1922 /* fabricate frame pts from sample count.
1923 * this is needed because the avcodec_encode_audio() API does not have
1924 * a way for the user to provide pts */
1925 if (avctx->sample_rate && avctx->time_base.num)
1926 frame->pts = ff_samples_to_time_base(avctx,
1927 avctx->internal->sample_count);
1929 frame->pts = AV_NOPTS_VALUE;
1930 avctx->internal->sample_count += frame->nb_samples;
1936 ret = avcodec_encode_audio2(avctx, &pkt, frame, &got_packet);
1937 if (!ret && got_packet && avctx->coded_frame) {
1938 avctx->coded_frame->pts = pkt.pts;
1939 avctx->coded_frame->key_frame = !!(pkt.flags & AV_PKT_FLAG_KEY);
1941 /* free any side data since we cannot return it */
1942 av_packet_free_side_data(&pkt);
1944 if (frame && frame->extended_data != frame->data)
1945 av_freep(&frame->extended_data);
1947 av_frame_free(&frame);
1948 return ret ? ret : pkt.size;
1953 #if FF_API_OLD_ENCODE_VIDEO
1954 int attribute_align_arg avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
1955 const AVFrame *pict)
1958 int ret, got_packet = 0;
1960 if (buf_size < FF_MIN_BUFFER_SIZE) {
1961 av_log(avctx, AV_LOG_ERROR, "buffer smaller than minimum size\n");
1965 av_init_packet(&pkt);
1967 pkt.size = buf_size;
1969 ret = avcodec_encode_video2(avctx, &pkt, pict, &got_packet);
1970 if (!ret && got_packet && avctx->coded_frame) {
1971 avctx->coded_frame->pts = pkt.pts;
1972 avctx->coded_frame->key_frame = !!(pkt.flags & AV_PKT_FLAG_KEY);
1975 /* free any side data since we cannot return it */
1976 if (pkt.side_data_elems > 0) {
1978 for (i = 0; i < pkt.side_data_elems; i++)
1979 av_free(pkt.side_data[i].data);
1980 av_freep(&pkt.side_data);
1981 pkt.side_data_elems = 0;
1984 return ret ? ret : pkt.size;
1989 int attribute_align_arg avcodec_encode_video2(AVCodecContext *avctx,
1991 const AVFrame *frame,
1992 int *got_packet_ptr)
1995 AVPacket user_pkt = *avpkt;
1996 int needs_realloc = !user_pkt.data;
1998 *got_packet_ptr = 0;
2000 if(CONFIG_FRAME_THREAD_ENCODER &&
2001 avctx->internal->frame_thread_encoder && (avctx->active_thread_type&FF_THREAD_FRAME))
2002 return ff_thread_video_encode_frame(avctx, avpkt, frame, got_packet_ptr);
2004 if ((avctx->flags&CODEC_FLAG_PASS1) && avctx->stats_out)
2005 avctx->stats_out[0] = '\0';
2007 if (!(avctx->codec->capabilities & CODEC_CAP_DELAY) && !frame) {
2008 av_free_packet(avpkt);
2009 av_init_packet(avpkt);
2014 if (av_image_check_size(avctx->width, avctx->height, 0, avctx))
2015 return AVERROR(EINVAL);
2017 av_assert0(avctx->codec->encode2);
2019 ret = avctx->codec->encode2(avctx, avpkt, frame, got_packet_ptr);
2020 av_assert0(ret <= 0);
2022 if (avpkt->data && avpkt->data == avctx->internal->byte_buffer) {
2024 if (user_pkt.data) {
2025 if (user_pkt.size >= avpkt->size) {
2026 memcpy(user_pkt.data, avpkt->data, avpkt->size);
2028 av_log(avctx, AV_LOG_ERROR, "Provided packet is too small, needs to be %d\n", avpkt->size);
2029 avpkt->size = user_pkt.size;
2032 avpkt->buf = user_pkt.buf;
2033 avpkt->data = user_pkt.data;
2034 #if FF_API_DESTRUCT_PACKET
2035 FF_DISABLE_DEPRECATION_WARNINGS
2036 avpkt->destruct = user_pkt.destruct;
2037 FF_ENABLE_DEPRECATION_WARNINGS
2040 if (av_dup_packet(avpkt) < 0) {
2041 ret = AVERROR(ENOMEM);
2047 if (!*got_packet_ptr)
2049 else if (!(avctx->codec->capabilities & CODEC_CAP_DELAY))
2050 avpkt->pts = avpkt->dts = frame->pts;
2052 if (needs_realloc && avpkt->data) {
2053 ret = av_buffer_realloc(&avpkt->buf, avpkt->size + FF_INPUT_BUFFER_PADDING_SIZE);
2055 avpkt->data = avpkt->buf->data;
2058 avctx->frame_number++;
2061 if (ret < 0 || !*got_packet_ptr)
2062 av_free_packet(avpkt);
2064 av_packet_merge_side_data(avpkt);
2070 int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size,
2071 const AVSubtitle *sub)
2074 if (sub->start_display_time) {
2075 av_log(avctx, AV_LOG_ERROR, "start_display_time must be 0.\n");
2079 ret = avctx->codec->encode_sub(avctx, buf, buf_size, sub);
2080 avctx->frame_number++;
2085 * Attempt to guess proper monotonic timestamps for decoded video frames
2086 * which might have incorrect times. Input timestamps may wrap around, in
2087 * which case the output will as well.
2089 * @param pts the pts field of the decoded AVPacket, as passed through
2091 * @param dts the dts field of the decoded AVPacket
2092 * @return one of the input values, may be AV_NOPTS_VALUE
2094 static int64_t guess_correct_pts(AVCodecContext *ctx,
2095 int64_t reordered_pts, int64_t dts)
2097 int64_t pts = AV_NOPTS_VALUE;
2099 if (dts != AV_NOPTS_VALUE) {
2100 ctx->pts_correction_num_faulty_dts += dts <= ctx->pts_correction_last_dts;
2101 ctx->pts_correction_last_dts = dts;
2102 } else if (reordered_pts != AV_NOPTS_VALUE)
2103 ctx->pts_correction_last_dts = reordered_pts;
2105 if (reordered_pts != AV_NOPTS_VALUE) {
2106 ctx->pts_correction_num_faulty_pts += reordered_pts <= ctx->pts_correction_last_pts;
2107 ctx->pts_correction_last_pts = reordered_pts;
2108 } else if(dts != AV_NOPTS_VALUE)
2109 ctx->pts_correction_last_pts = dts;
2111 if ((ctx->pts_correction_num_faulty_pts<=ctx->pts_correction_num_faulty_dts || dts == AV_NOPTS_VALUE)
2112 && reordered_pts != AV_NOPTS_VALUE)
2113 pts = reordered_pts;
2120 static int apply_param_change(AVCodecContext *avctx, AVPacket *avpkt)
2123 const uint8_t *data;
2126 data = av_packet_get_side_data(avpkt, AV_PKT_DATA_PARAM_CHANGE, &size);
2130 if (!(avctx->codec->capabilities & CODEC_CAP_PARAM_CHANGE)) {
2131 av_log(avctx, AV_LOG_ERROR, "This decoder does not support parameter "
2132 "changes, but PARAM_CHANGE side data was sent to it.\n");
2133 return AVERROR(EINVAL);
2139 flags = bytestream_get_le32(&data);
2142 if (flags & AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_COUNT) {
2145 avctx->channels = bytestream_get_le32(&data);
2148 if (flags & AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_LAYOUT) {
2151 avctx->channel_layout = bytestream_get_le64(&data);
2154 if (flags & AV_SIDE_DATA_PARAM_CHANGE_SAMPLE_RATE) {
2157 avctx->sample_rate = bytestream_get_le32(&data);
2160 if (flags & AV_SIDE_DATA_PARAM_CHANGE_DIMENSIONS) {
2163 avctx->width = bytestream_get_le32(&data);
2164 avctx->height = bytestream_get_le32(&data);
2166 ret = ff_set_dimensions(avctx, avctx->width, avctx->height);
2173 av_log(avctx, AV_LOG_ERROR, "PARAM_CHANGE side data too small.\n");
2174 return AVERROR_INVALIDDATA;
2177 static int add_metadata_from_side_data(AVCodecContext *avctx, AVFrame *frame)
2180 const uint8_t *side_metadata;
2182 AVDictionary **frame_md = avpriv_frame_get_metadatap(frame);
2184 side_metadata = av_packet_get_side_data(avctx->internal->pkt,
2185 AV_PKT_DATA_STRINGS_METADATA, &size);
2186 return av_packet_unpack_dictionary(side_metadata, size, frame_md);
2189 static int unrefcount_frame(AVCodecInternal *avci, AVFrame *frame)
2193 /* move the original frame to our backup */
2194 av_frame_unref(avci->to_free);
2195 av_frame_move_ref(avci->to_free, frame);
2197 /* now copy everything except the AVBufferRefs back
2198 * note that we make a COPY of the side data, so calling av_frame_free() on
2199 * the caller's frame will work properly */
2200 ret = av_frame_copy_props(frame, avci->to_free);
2204 memcpy(frame->data, avci->to_free->data, sizeof(frame->data));
2205 memcpy(frame->linesize, avci->to_free->linesize, sizeof(frame->linesize));
2206 if (avci->to_free->extended_data != avci->to_free->data) {
2207 int planes = av_frame_get_channels(avci->to_free);
2208 int size = planes * sizeof(*frame->extended_data);
2211 av_frame_unref(frame);
2215 frame->extended_data = av_malloc(size);
2216 if (!frame->extended_data) {
2217 av_frame_unref(frame);
2218 return AVERROR(ENOMEM);
2220 memcpy(frame->extended_data, avci->to_free->extended_data,
2223 frame->extended_data = frame->data;
2225 frame->format = avci->to_free->format;
2226 frame->width = avci->to_free->width;
2227 frame->height = avci->to_free->height;
2228 frame->channel_layout = avci->to_free->channel_layout;
2229 frame->nb_samples = avci->to_free->nb_samples;
2230 av_frame_set_channels(frame, av_frame_get_channels(avci->to_free));
2235 int attribute_align_arg avcodec_decode_video2(AVCodecContext *avctx, AVFrame *picture,
2236 int *got_picture_ptr,
2237 const AVPacket *avpkt)
2239 AVCodecInternal *avci = avctx->internal;
2241 // copy to ensure we do not change avpkt
2242 AVPacket tmp = *avpkt;
2245 return AVERROR(EINVAL);
2246 if (avctx->codec->type != AVMEDIA_TYPE_VIDEO) {
2247 av_log(avctx, AV_LOG_ERROR, "Invalid media type for video\n");
2248 return AVERROR(EINVAL);
2251 *got_picture_ptr = 0;
2252 if ((avctx->coded_width || avctx->coded_height) && av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx))
2253 return AVERROR(EINVAL);
2255 av_frame_unref(picture);
2257 if ((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size || (avctx->active_thread_type & FF_THREAD_FRAME)) {
2258 int did_split = av_packet_split_side_data(&tmp);
2259 ret = apply_param_change(avctx, &tmp);
2261 av_log(avctx, AV_LOG_ERROR, "Error applying parameter changes.\n");
2262 if (avctx->err_recognition & AV_EF_EXPLODE)
2266 avctx->internal->pkt = &tmp;
2267 if (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME)
2268 ret = ff_thread_decode_frame(avctx, picture, got_picture_ptr,
2271 ret = avctx->codec->decode(avctx, picture, got_picture_ptr,
2273 picture->pkt_dts = avpkt->dts;
2275 if(!avctx->has_b_frames){
2276 av_frame_set_pkt_pos(picture, avpkt->pos);
2278 //FIXME these should be under if(!avctx->has_b_frames)
2279 /* get_buffer is supposed to set frame parameters */
2280 if (!(avctx->codec->capabilities & CODEC_CAP_DR1)) {
2281 if (!picture->sample_aspect_ratio.num) picture->sample_aspect_ratio = avctx->sample_aspect_ratio;
2282 if (!picture->width) picture->width = avctx->width;
2283 if (!picture->height) picture->height = avctx->height;
2284 if (picture->format == AV_PIX_FMT_NONE) picture->format = avctx->pix_fmt;
2287 add_metadata_from_side_data(avctx, picture);
2290 emms_c(); //needed to avoid an emms_c() call before every return;
2292 avctx->internal->pkt = NULL;
2294 av_packet_free_side_data(&tmp);
2299 if (*got_picture_ptr) {
2300 if (!avctx->refcounted_frames) {
2301 int err = unrefcount_frame(avci, picture);
2306 avctx->frame_number++;
2307 av_frame_set_best_effort_timestamp(picture,
2308 guess_correct_pts(avctx,
2312 av_frame_unref(picture);
2316 /* many decoders assign whole AVFrames, thus overwriting extended_data;
2317 * make sure it's set correctly */
2318 av_assert0(!picture->extended_data || picture->extended_data == picture->data);
2323 #if FF_API_OLD_DECODE_AUDIO
2324 int attribute_align_arg avcodec_decode_audio3(AVCodecContext *avctx, int16_t *samples,
2325 int *frame_size_ptr,
2328 AVFrame *frame = av_frame_alloc();
2329 int ret, got_frame = 0;
2332 return AVERROR(ENOMEM);
2333 if (avctx->get_buffer != avcodec_default_get_buffer) {
2334 av_log(avctx, AV_LOG_ERROR, "Custom get_buffer() for use with"
2335 "avcodec_decode_audio3() detected. Overriding with avcodec_default_get_buffer\n");
2336 av_log(avctx, AV_LOG_ERROR, "Please port your application to "
2337 "avcodec_decode_audio4()\n");
2338 avctx->get_buffer = avcodec_default_get_buffer;
2339 avctx->release_buffer = avcodec_default_release_buffer;
2342 ret = avcodec_decode_audio4(avctx, frame, &got_frame, avpkt);
2344 if (ret >= 0 && got_frame) {
2346 int planar = av_sample_fmt_is_planar(avctx->sample_fmt);
2347 int data_size = av_samples_get_buffer_size(&plane_size, avctx->channels,
2349 avctx->sample_fmt, 1);
2350 if (*frame_size_ptr < data_size) {
2351 av_log(avctx, AV_LOG_ERROR, "output buffer size is too small for "
2352 "the current frame (%d < %d)\n", *frame_size_ptr, data_size);
2353 av_frame_free(&frame);
2354 return AVERROR(EINVAL);
2357 memcpy(samples, frame->extended_data[0], plane_size);
2359 if (planar && avctx->channels > 1) {
2360 uint8_t *out = ((uint8_t *)samples) + plane_size;
2361 for (ch = 1; ch < avctx->channels; ch++) {
2362 memcpy(out, frame->extended_data[ch], plane_size);
2366 *frame_size_ptr = data_size;
2368 *frame_size_ptr = 0;
2370 av_frame_free(&frame);
2376 int attribute_align_arg avcodec_decode_audio4(AVCodecContext *avctx,
2379 const AVPacket *avpkt)
2381 AVCodecInternal *avci = avctx->internal;
2386 if (!avpkt->data && avpkt->size) {
2387 av_log(avctx, AV_LOG_ERROR, "invalid packet: NULL data, size != 0\n");
2388 return AVERROR(EINVAL);
2391 return AVERROR(EINVAL);
2392 if (avctx->codec->type != AVMEDIA_TYPE_AUDIO) {
2393 av_log(avctx, AV_LOG_ERROR, "Invalid media type for audio\n");
2394 return AVERROR(EINVAL);
2397 av_frame_unref(frame);
2399 if ((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size || (avctx->active_thread_type & FF_THREAD_FRAME)) {
2402 uint32_t discard_padding = 0;
2403 // copy to ensure we do not change avpkt
2404 AVPacket tmp = *avpkt;
2405 int did_split = av_packet_split_side_data(&tmp);
2406 ret = apply_param_change(avctx, &tmp);
2408 av_log(avctx, AV_LOG_ERROR, "Error applying parameter changes.\n");
2409 if (avctx->err_recognition & AV_EF_EXPLODE)
2413 avctx->internal->pkt = &tmp;
2414 if (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME)
2415 ret = ff_thread_decode_frame(avctx, frame, got_frame_ptr, &tmp);
2417 ret = avctx->codec->decode(avctx, frame, got_frame_ptr, &tmp);
2418 frame->pkt_dts = avpkt->dts;
2420 if (ret >= 0 && *got_frame_ptr) {
2421 add_metadata_from_side_data(avctx, frame);
2422 avctx->frame_number++;
2423 av_frame_set_best_effort_timestamp(frame,
2424 guess_correct_pts(avctx,
2427 if (frame->format == AV_SAMPLE_FMT_NONE)
2428 frame->format = avctx->sample_fmt;
2429 if (!frame->channel_layout)
2430 frame->channel_layout = avctx->channel_layout;
2431 if (!av_frame_get_channels(frame))
2432 av_frame_set_channels(frame, avctx->channels);
2433 if (!frame->sample_rate)
2434 frame->sample_rate = avctx->sample_rate;
2437 side= av_packet_get_side_data(avctx->internal->pkt, AV_PKT_DATA_SKIP_SAMPLES, &side_size);
2438 if(side && side_size>=10) {
2439 avctx->internal->skip_samples = AV_RL32(side);
2440 av_log(avctx, AV_LOG_DEBUG, "skip %d samples due to side data\n",
2441 avctx->internal->skip_samples);
2442 discard_padding = AV_RL32(side + 4);
2444 if (avctx->internal->skip_samples && *got_frame_ptr) {
2445 if(frame->nb_samples <= avctx->internal->skip_samples){
2447 avctx->internal->skip_samples -= frame->nb_samples;
2448 av_log(avctx, AV_LOG_DEBUG, "skip whole frame, skip left: %d\n",
2449 avctx->internal->skip_samples);
2451 av_samples_copy(frame->extended_data, frame->extended_data, 0, avctx->internal->skip_samples,
2452 frame->nb_samples - avctx->internal->skip_samples, avctx->channels, frame->format);
2453 if(avctx->pkt_timebase.num && avctx->sample_rate) {
2454 int64_t diff_ts = av_rescale_q(avctx->internal->skip_samples,
2455 (AVRational){1, avctx->sample_rate},
2456 avctx->pkt_timebase);
2457 if(frame->pkt_pts!=AV_NOPTS_VALUE)
2458 frame->pkt_pts += diff_ts;
2459 if(frame->pkt_dts!=AV_NOPTS_VALUE)
2460 frame->pkt_dts += diff_ts;
2461 if (av_frame_get_pkt_duration(frame) >= diff_ts)
2462 av_frame_set_pkt_duration(frame, av_frame_get_pkt_duration(frame) - diff_ts);
2464 av_log(avctx, AV_LOG_WARNING, "Could not update timestamps for skipped samples.\n");
2466 av_log(avctx, AV_LOG_DEBUG, "skip %d/%d samples\n",
2467 avctx->internal->skip_samples, frame->nb_samples);
2468 frame->nb_samples -= avctx->internal->skip_samples;
2469 avctx->internal->skip_samples = 0;
2473 if (discard_padding > 0 && discard_padding <= frame->nb_samples && *got_frame_ptr) {
2474 if (discard_padding == frame->nb_samples) {
2477 if(avctx->pkt_timebase.num && avctx->sample_rate) {
2478 int64_t diff_ts = av_rescale_q(frame->nb_samples - discard_padding,
2479 (AVRational){1, avctx->sample_rate},
2480 avctx->pkt_timebase);
2481 if (av_frame_get_pkt_duration(frame) >= diff_ts)
2482 av_frame_set_pkt_duration(frame, av_frame_get_pkt_duration(frame) - diff_ts);
2484 av_log(avctx, AV_LOG_WARNING, "Could not update timestamps for discarded samples.\n");
2486 av_log(avctx, AV_LOG_DEBUG, "discard %d/%d samples\n",
2487 discard_padding, frame->nb_samples);
2488 frame->nb_samples -= discard_padding;
2492 avctx->internal->pkt = NULL;
2494 av_packet_free_side_data(&tmp);
2499 if (ret >= 0 && *got_frame_ptr) {
2500 if (!avctx->refcounted_frames) {
2501 int err = unrefcount_frame(avci, frame);
2506 av_frame_unref(frame);
2512 #define UTF8_MAX_BYTES 4 /* 5 and 6 bytes sequences should not be used */
2513 static int recode_subtitle(AVCodecContext *avctx,
2514 AVPacket *outpkt, const AVPacket *inpkt)
2517 iconv_t cd = (iconv_t)-1;
2524 if (avctx->sub_charenc_mode != FF_SUB_CHARENC_MODE_PRE_DECODER || inpkt->size == 0)
2528 cd = iconv_open("UTF-8", avctx->sub_charenc);
2529 av_assert0(cd != (iconv_t)-1);
2534 if (inl >= INT_MAX / UTF8_MAX_BYTES - FF_INPUT_BUFFER_PADDING_SIZE) {
2535 av_log(avctx, AV_LOG_ERROR, "Subtitles packet is too big for recoding\n");
2536 ret = AVERROR(ENOMEM);
2540 ret = av_new_packet(&tmp, inl * UTF8_MAX_BYTES);
2543 outpkt->buf = tmp.buf;
2544 outpkt->data = tmp.data;
2545 outpkt->size = tmp.size;
2546 outb = outpkt->data;
2547 outl = outpkt->size;
2549 if (iconv(cd, &inb, &inl, &outb, &outl) == (size_t)-1 ||
2550 iconv(cd, NULL, NULL, &outb, &outl) == (size_t)-1 ||
2551 outl >= outpkt->size || inl != 0) {
2552 av_log(avctx, AV_LOG_ERROR, "Unable to recode subtitle event \"%s\" "
2553 "from %s to UTF-8\n", inpkt->data, avctx->sub_charenc);
2554 av_free_packet(&tmp);
2555 ret = AVERROR(errno);
2558 outpkt->size -= outl;
2559 memset(outpkt->data + outpkt->size, 0, outl);
2562 if (cd != (iconv_t)-1)
2566 av_log(avctx, AV_LOG_ERROR, "requesting subtitles recoding without iconv");
2567 return AVERROR(EINVAL);
2571 static int utf8_check(const uint8_t *str)
2573 const uint8_t *byte;
2574 uint32_t codepoint, min;
2578 GET_UTF8(codepoint, *(byte++), return 0;);
2579 min = byte - str == 1 ? 0 : byte - str == 2 ? 0x80 :
2580 1 << (5 * (byte - str) - 4);
2581 if (codepoint < min || codepoint >= 0x110000 ||
2582 codepoint == 0xFFFE /* BOM */ ||
2583 codepoint >= 0xD800 && codepoint <= 0xDFFF /* surrogates */)
2590 int avcodec_decode_subtitle2(AVCodecContext *avctx, AVSubtitle *sub,
2596 if (!avpkt->data && avpkt->size) {
2597 av_log(avctx, AV_LOG_ERROR, "invalid packet: NULL data, size != 0\n");
2598 return AVERROR(EINVAL);
2601 return AVERROR(EINVAL);
2602 if (avctx->codec->type != AVMEDIA_TYPE_SUBTITLE) {
2603 av_log(avctx, AV_LOG_ERROR, "Invalid media type for subtitles\n");
2604 return AVERROR(EINVAL);
2608 avcodec_get_subtitle_defaults(sub);
2610 if ((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size) {
2611 AVPacket pkt_recoded;
2612 AVPacket tmp = *avpkt;
2613 int did_split = av_packet_split_side_data(&tmp);
2614 //apply_param_change(avctx, &tmp);
2617 /* FFMIN() prevents overflow in case the packet wasn't allocated with
2619 * If the side data is smaller than the buffer padding size, the
2620 * remaining bytes should have already been filled with zeros by the
2621 * original packet allocation anyway. */
2622 memset(tmp.data + tmp.size, 0,
2623 FFMIN(avpkt->size - tmp.size, FF_INPUT_BUFFER_PADDING_SIZE));
2627 ret = recode_subtitle(avctx, &pkt_recoded, &tmp);
2631 avctx->internal->pkt = &pkt_recoded;
2633 if (avctx->pkt_timebase.den && avpkt->pts != AV_NOPTS_VALUE)
2634 sub->pts = av_rescale_q(avpkt->pts,
2635 avctx->pkt_timebase, AV_TIME_BASE_Q);
2636 ret = avctx->codec->decode(avctx, sub, got_sub_ptr, &pkt_recoded);
2637 av_assert1((ret >= 0) >= !!*got_sub_ptr &&
2638 !!*got_sub_ptr >= !!sub->num_rects);
2640 if (sub->num_rects && !sub->end_display_time && avpkt->duration &&
2641 avctx->pkt_timebase.num) {
2642 AVRational ms = { 1, 1000 };
2643 sub->end_display_time = av_rescale_q(avpkt->duration,
2644 avctx->pkt_timebase, ms);
2647 for (i = 0; i < sub->num_rects; i++) {
2648 if (sub->rects[i]->ass && !utf8_check(sub->rects[i]->ass)) {
2649 av_log(avctx, AV_LOG_ERROR,
2650 "Invalid UTF-8 in decoded subtitles text; "
2651 "maybe missing -sub_charenc option\n");
2652 avsubtitle_free(sub);
2653 return AVERROR_INVALIDDATA;
2657 if (tmp.data != pkt_recoded.data) { // did we recode?
2658 /* prevent from destroying side data from original packet */
2659 pkt_recoded.side_data = NULL;
2660 pkt_recoded.side_data_elems = 0;
2662 av_free_packet(&pkt_recoded);
2664 if (avctx->codec_descriptor->props & AV_CODEC_PROP_BITMAP_SUB)
2666 else if (avctx->codec_descriptor->props & AV_CODEC_PROP_TEXT_SUB)
2668 avctx->internal->pkt = NULL;
2672 av_packet_free_side_data(&tmp);
2678 avctx->frame_number++;
2684 void avsubtitle_free(AVSubtitle *sub)
2688 for (i = 0; i < sub->num_rects; i++) {
2689 av_freep(&sub->rects[i]->pict.data[0]);
2690 av_freep(&sub->rects[i]->pict.data[1]);
2691 av_freep(&sub->rects[i]->pict.data[2]);
2692 av_freep(&sub->rects[i]->pict.data[3]);
2693 av_freep(&sub->rects[i]->text);
2694 av_freep(&sub->rects[i]->ass);
2695 av_freep(&sub->rects[i]);
2698 av_freep(&sub->rects);
2700 memset(sub, 0, sizeof(AVSubtitle));
2703 av_cold int avcodec_close(AVCodecContext *avctx)
2708 if (avcodec_is_open(avctx)) {
2709 FramePool *pool = avctx->internal->pool;
2711 if (CONFIG_FRAME_THREAD_ENCODER &&
2712 avctx->internal->frame_thread_encoder && avctx->thread_count > 1) {
2713 ff_frame_thread_encoder_free(avctx);
2715 if (HAVE_THREADS && avctx->internal->thread_ctx)
2716 ff_thread_free(avctx);
2717 if (avctx->codec && avctx->codec->close)
2718 avctx->codec->close(avctx);
2719 avctx->coded_frame = NULL;
2720 avctx->internal->byte_buffer_size = 0;
2721 av_freep(&avctx->internal->byte_buffer);
2722 av_frame_free(&avctx->internal->to_free);
2723 for (i = 0; i < FF_ARRAY_ELEMS(pool->pools); i++)
2724 av_buffer_pool_uninit(&pool->pools[i]);
2725 av_freep(&avctx->internal->pool);
2727 if (avctx->hwaccel && avctx->hwaccel->uninit)
2728 avctx->hwaccel->uninit(avctx);
2729 av_freep(&avctx->internal->hwaccel_priv_data);
2731 av_freep(&avctx->internal);
2734 if (avctx->priv_data && avctx->codec && avctx->codec->priv_class)
2735 av_opt_free(avctx->priv_data);
2737 av_freep(&avctx->priv_data);
2738 if (av_codec_is_encoder(avctx->codec))
2739 av_freep(&avctx->extradata);
2740 avctx->codec = NULL;
2741 avctx->active_thread_type = 0;
2746 static enum AVCodecID remap_deprecated_codec_id(enum AVCodecID id)
2749 //This is for future deprecatec codec ids, its empty since
2750 //last major bump but will fill up again over time, please don't remove it
2751 // case AV_CODEC_ID_UTVIDEO_DEPRECATED: return AV_CODEC_ID_UTVIDEO;
2752 case AV_CODEC_ID_BRENDER_PIX_DEPRECATED : return AV_CODEC_ID_BRENDER_PIX;
2753 case AV_CODEC_ID_OPUS_DEPRECATED : return AV_CODEC_ID_OPUS;
2754 case AV_CODEC_ID_TAK_DEPRECATED : return AV_CODEC_ID_TAK;
2755 case AV_CODEC_ID_PAF_AUDIO_DEPRECATED : return AV_CODEC_ID_PAF_AUDIO;
2756 case AV_CODEC_ID_PCM_S24LE_PLANAR_DEPRECATED : return AV_CODEC_ID_PCM_S24LE_PLANAR;
2757 case AV_CODEC_ID_PCM_S32LE_PLANAR_DEPRECATED : return AV_CODEC_ID_PCM_S32LE_PLANAR;
2758 case AV_CODEC_ID_ADPCM_VIMA_DEPRECATED : return AV_CODEC_ID_ADPCM_VIMA;
2759 case AV_CODEC_ID_ESCAPE130_DEPRECATED : return AV_CODEC_ID_ESCAPE130;
2760 case AV_CODEC_ID_EXR_DEPRECATED : return AV_CODEC_ID_EXR;
2761 case AV_CODEC_ID_G2M_DEPRECATED : return AV_CODEC_ID_G2M;
2762 case AV_CODEC_ID_PAF_VIDEO_DEPRECATED : return AV_CODEC_ID_PAF_VIDEO;
2763 case AV_CODEC_ID_WEBP_DEPRECATED : return AV_CODEC_ID_WEBP;
2764 case AV_CODEC_ID_HEVC_DEPRECATED : return AV_CODEC_ID_HEVC;
2765 case AV_CODEC_ID_MVC1_DEPRECATED : return AV_CODEC_ID_MVC1;
2766 case AV_CODEC_ID_MVC2_DEPRECATED : return AV_CODEC_ID_MVC2;
2767 case AV_CODEC_ID_SANM_DEPRECATED : return AV_CODEC_ID_SANM;
2768 case AV_CODEC_ID_SGIRLE_DEPRECATED : return AV_CODEC_ID_SGIRLE;
2769 case AV_CODEC_ID_VP7_DEPRECATED : return AV_CODEC_ID_VP7;
2770 default : return id;
2774 static AVCodec *find_encdec(enum AVCodecID id, int encoder)
2776 AVCodec *p, *experimental = NULL;
2778 id= remap_deprecated_codec_id(id);
2780 if ((encoder ? av_codec_is_encoder(p) : av_codec_is_decoder(p)) &&
2782 if (p->capabilities & CODEC_CAP_EXPERIMENTAL && !experimental) {
2789 return experimental;
2792 AVCodec *avcodec_find_encoder(enum AVCodecID id)
2794 return find_encdec(id, 1);
2797 AVCodec *avcodec_find_encoder_by_name(const char *name)
2804 if (av_codec_is_encoder(p) && strcmp(name, p->name) == 0)
2811 AVCodec *avcodec_find_decoder(enum AVCodecID id)
2813 return find_encdec(id, 0);
2816 AVCodec *avcodec_find_decoder_by_name(const char *name)
2823 if (av_codec_is_decoder(p) && strcmp(name, p->name) == 0)
2830 const char *avcodec_get_name(enum AVCodecID id)
2832 const AVCodecDescriptor *cd;
2835 if (id == AV_CODEC_ID_NONE)
2837 cd = avcodec_descriptor_get(id);
2840 av_log(NULL, AV_LOG_WARNING, "Codec 0x%x is not in the full list.\n", id);
2841 codec = avcodec_find_decoder(id);
2844 codec = avcodec_find_encoder(id);
2847 return "unknown_codec";
2850 size_t av_get_codec_tag_string(char *buf, size_t buf_size, unsigned int codec_tag)
2852 int i, len, ret = 0;
2854 #define TAG_PRINT(x) \
2855 (((x) >= '0' && (x) <= '9') || \
2856 ((x) >= 'a' && (x) <= 'z') || ((x) >= 'A' && (x) <= 'Z') || \
2857 ((x) == '.' || (x) == ' ' || (x) == '-' || (x) == '_'))
2859 for (i = 0; i < 4; i++) {
2860 len = snprintf(buf, buf_size,
2861 TAG_PRINT(codec_tag & 0xFF) ? "%c" : "[%d]", codec_tag & 0xFF);
2863 buf_size = buf_size > len ? buf_size - len : 0;
2870 void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)
2872 const char *codec_type;
2873 const char *codec_name;
2874 const char *profile = NULL;
2877 AVRational display_aspect_ratio;
2879 if (!buf || buf_size <= 0)
2881 codec_type = av_get_media_type_string(enc->codec_type);
2882 codec_name = avcodec_get_name(enc->codec_id);
2883 if (enc->profile != FF_PROFILE_UNKNOWN) {
2887 p = encode ? avcodec_find_encoder(enc->codec_id) :
2888 avcodec_find_decoder(enc->codec_id);
2890 profile = av_get_profile_name(p, enc->profile);
2893 snprintf(buf, buf_size, "%s: %s", codec_type ? codec_type : "unknown",
2895 buf[0] ^= 'a' ^ 'A'; /* first letter in uppercase */
2897 if (enc->codec && strcmp(enc->codec->name, codec_name))
2898 snprintf(buf + strlen(buf), buf_size - strlen(buf), " (%s)", enc->codec->name);
2901 snprintf(buf + strlen(buf), buf_size - strlen(buf), " (%s)", profile);
2902 if (enc->codec_tag) {
2904 av_get_codec_tag_string(tag_buf, sizeof(tag_buf), enc->codec_tag);
2905 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2906 " (%s / 0x%04X)", tag_buf, enc->codec_tag);
2909 switch (enc->codec_type) {
2910 case AVMEDIA_TYPE_VIDEO:
2911 if (enc->pix_fmt != AV_PIX_FMT_NONE) {
2912 char detail[256] = "(";
2913 const char *colorspace_name;
2914 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2916 av_get_pix_fmt_name(enc->pix_fmt));
2917 if (enc->bits_per_raw_sample &&
2918 enc->bits_per_raw_sample <= av_pix_fmt_desc_get(enc->pix_fmt)->comp[0].depth_minus1)
2919 av_strlcatf(detail, sizeof(detail), "%d bpc, ", enc->bits_per_raw_sample);
2920 if (enc->color_range != AVCOL_RANGE_UNSPECIFIED)
2921 av_strlcatf(detail, sizeof(detail),
2922 enc->color_range == AVCOL_RANGE_MPEG ? "tv, ": "pc, ");
2924 colorspace_name = av_get_colorspace_name(enc->colorspace);
2925 if (colorspace_name)
2926 av_strlcatf(detail, sizeof(detail), "%s, ", colorspace_name);
2928 if (strlen(detail) > 1) {
2929 detail[strlen(detail) - 2] = 0;
2930 av_strlcatf(buf, buf_size, "%s)", detail);
2934 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2936 enc->width, enc->height);
2937 if (enc->sample_aspect_ratio.num) {
2938 av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
2939 enc->width * enc->sample_aspect_ratio.num,
2940 enc->height * enc->sample_aspect_ratio.den,
2942 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2943 " [SAR %d:%d DAR %d:%d]",
2944 enc->sample_aspect_ratio.num, enc->sample_aspect_ratio.den,
2945 display_aspect_ratio.num, display_aspect_ratio.den);
2947 if (av_log_get_level() >= AV_LOG_DEBUG) {
2948 int g = av_gcd(enc->time_base.num, enc->time_base.den);
2949 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2951 enc->time_base.num / g, enc->time_base.den / g);
2955 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2956 ", q=%d-%d", enc->qmin, enc->qmax);
2959 case AVMEDIA_TYPE_AUDIO:
2960 if (enc->sample_rate) {
2961 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2962 ", %d Hz", enc->sample_rate);
2964 av_strlcat(buf, ", ", buf_size);
2965 av_get_channel_layout_string(buf + strlen(buf), buf_size - strlen(buf), enc->channels, enc->channel_layout);
2966 if (enc->sample_fmt != AV_SAMPLE_FMT_NONE) {
2967 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2968 ", %s", av_get_sample_fmt_name(enc->sample_fmt));
2971 case AVMEDIA_TYPE_DATA:
2972 if (av_log_get_level() >= AV_LOG_DEBUG) {
2973 int g = av_gcd(enc->time_base.num, enc->time_base.den);
2975 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2977 enc->time_base.num / g, enc->time_base.den / g);
2980 case AVMEDIA_TYPE_SUBTITLE:
2982 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2983 ", %dx%d", enc->width, enc->height);
2989 if (enc->flags & CODEC_FLAG_PASS1)
2990 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2992 if (enc->flags & CODEC_FLAG_PASS2)
2993 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2996 bitrate = get_bit_rate(enc);
2998 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2999 ", %d kb/s", bitrate / 1000);
3000 } else if (enc->rc_max_rate > 0) {
3001 snprintf(buf + strlen(buf), buf_size - strlen(buf),
3002 ", max. %d kb/s", enc->rc_max_rate / 1000);
3006 const char *av_get_profile_name(const AVCodec *codec, int profile)
3009 if (profile == FF_PROFILE_UNKNOWN || !codec->profiles)
3012 for (p = codec->profiles; p->profile != FF_PROFILE_UNKNOWN; p++)
3013 if (p->profile == profile)
3019 unsigned avcodec_version(void)
3021 // av_assert0(AV_CODEC_ID_V410==164);
3022 av_assert0(AV_CODEC_ID_PCM_S8_PLANAR==65563);
3023 av_assert0(AV_CODEC_ID_ADPCM_G722==69660);
3024 // av_assert0(AV_CODEC_ID_BMV_AUDIO==86071);
3025 av_assert0(AV_CODEC_ID_SRT==94216);
3026 av_assert0(LIBAVCODEC_VERSION_MICRO >= 100);
3028 av_assert0(CODEC_ID_CLLC == AV_CODEC_ID_CLLC);
3029 av_assert0(CODEC_ID_PCM_S8_PLANAR == AV_CODEC_ID_PCM_S8_PLANAR);
3030 av_assert0(CODEC_ID_ADPCM_IMA_APC == AV_CODEC_ID_ADPCM_IMA_APC);
3031 av_assert0(CODEC_ID_ILBC == AV_CODEC_ID_ILBC);
3032 av_assert0(CODEC_ID_SRT == AV_CODEC_ID_SRT);
3033 return LIBAVCODEC_VERSION_INT;
3036 const char *avcodec_configuration(void)
3038 return FFMPEG_CONFIGURATION;
3041 const char *avcodec_license(void)
3043 #define LICENSE_PREFIX "libavcodec license: "
3044 return LICENSE_PREFIX FFMPEG_LICENSE + sizeof(LICENSE_PREFIX) - 1;
3047 void avcodec_flush_buffers(AVCodecContext *avctx)
3049 if (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME)
3050 ff_thread_flush(avctx);
3051 else if (avctx->codec->flush)
3052 avctx->codec->flush(avctx);
3054 avctx->pts_correction_last_pts =
3055 avctx->pts_correction_last_dts = INT64_MIN;
3057 if (!avctx->refcounted_frames)
3058 av_frame_unref(avctx->internal->to_free);
3061 int av_get_exact_bits_per_sample(enum AVCodecID codec_id)
3064 case AV_CODEC_ID_8SVX_EXP:
3065 case AV_CODEC_ID_8SVX_FIB:
3066 case AV_CODEC_ID_ADPCM_CT:
3067 case AV_CODEC_ID_ADPCM_IMA_APC:
3068 case AV_CODEC_ID_ADPCM_IMA_EA_SEAD:
3069 case AV_CODEC_ID_ADPCM_IMA_OKI:
3070 case AV_CODEC_ID_ADPCM_IMA_WS:
3071 case AV_CODEC_ID_ADPCM_G722:
3072 case AV_CODEC_ID_ADPCM_YAMAHA:
3074 case AV_CODEC_ID_DSD_LSBF:
3075 case AV_CODEC_ID_DSD_MSBF:
3076 case AV_CODEC_ID_DSD_LSBF_PLANAR:
3077 case AV_CODEC_ID_DSD_MSBF_PLANAR:
3078 case AV_CODEC_ID_PCM_ALAW:
3079 case AV_CODEC_ID_PCM_MULAW:
3080 case AV_CODEC_ID_PCM_S8:
3081 case AV_CODEC_ID_PCM_S8_PLANAR:
3082 case AV_CODEC_ID_PCM_U8:
3083 case AV_CODEC_ID_PCM_ZORK:
3085 case AV_CODEC_ID_PCM_S16BE:
3086 case AV_CODEC_ID_PCM_S16BE_PLANAR:
3087 case AV_CODEC_ID_PCM_S16LE:
3088 case AV_CODEC_ID_PCM_S16LE_PLANAR:
3089 case AV_CODEC_ID_PCM_U16BE:
3090 case AV_CODEC_ID_PCM_U16LE:
3092 case AV_CODEC_ID_PCM_S24DAUD:
3093 case AV_CODEC_ID_PCM_S24BE:
3094 case AV_CODEC_ID_PCM_S24LE:
3095 case AV_CODEC_ID_PCM_S24LE_PLANAR:
3096 case AV_CODEC_ID_PCM_U24BE:
3097 case AV_CODEC_ID_PCM_U24LE:
3099 case AV_CODEC_ID_PCM_S32BE:
3100 case AV_CODEC_ID_PCM_S32LE:
3101 case AV_CODEC_ID_PCM_S32LE_PLANAR:
3102 case AV_CODEC_ID_PCM_U32BE:
3103 case AV_CODEC_ID_PCM_U32LE:
3104 case AV_CODEC_ID_PCM_F32BE:
3105 case AV_CODEC_ID_PCM_F32LE:
3107 case AV_CODEC_ID_PCM_F64BE:
3108 case AV_CODEC_ID_PCM_F64LE:
3115 enum AVCodecID av_get_pcm_codec(enum AVSampleFormat fmt, int be)
3117 static const enum AVCodecID map[AV_SAMPLE_FMT_NB][2] = {
3118 [AV_SAMPLE_FMT_U8 ] = { AV_CODEC_ID_PCM_U8, AV_CODEC_ID_PCM_U8 },
3119 [AV_SAMPLE_FMT_S16 ] = { AV_CODEC_ID_PCM_S16LE, AV_CODEC_ID_PCM_S16BE },
3120 [AV_SAMPLE_FMT_S32 ] = { AV_CODEC_ID_PCM_S32LE, AV_CODEC_ID_PCM_S32BE },
3121 [AV_SAMPLE_FMT_FLT ] = { AV_CODEC_ID_PCM_F32LE, AV_CODEC_ID_PCM_F32BE },
3122 [AV_SAMPLE_FMT_DBL ] = { AV_CODEC_ID_PCM_F64LE, AV_CODEC_ID_PCM_F64BE },
3123 [AV_SAMPLE_FMT_U8P ] = { AV_CODEC_ID_PCM_U8, AV_CODEC_ID_PCM_U8 },
3124 [AV_SAMPLE_FMT_S16P] = { AV_CODEC_ID_PCM_S16LE, AV_CODEC_ID_PCM_S16BE },
3125 [AV_SAMPLE_FMT_S32P] = { AV_CODEC_ID_PCM_S32LE, AV_CODEC_ID_PCM_S32BE },
3126 [AV_SAMPLE_FMT_FLTP] = { AV_CODEC_ID_PCM_F32LE, AV_CODEC_ID_PCM_F32BE },
3127 [AV_SAMPLE_FMT_DBLP] = { AV_CODEC_ID_PCM_F64LE, AV_CODEC_ID_PCM_F64BE },
3129 if (fmt < 0 || fmt >= AV_SAMPLE_FMT_NB)
3130 return AV_CODEC_ID_NONE;
3131 if (be < 0 || be > 1)
3133 return map[fmt][be];
3136 int av_get_bits_per_sample(enum AVCodecID codec_id)
3139 case AV_CODEC_ID_ADPCM_SBPRO_2:
3141 case AV_CODEC_ID_ADPCM_SBPRO_3:
3143 case AV_CODEC_ID_ADPCM_SBPRO_4:
3144 case AV_CODEC_ID_ADPCM_IMA_WAV:
3145 case AV_CODEC_ID_ADPCM_IMA_QT:
3146 case AV_CODEC_ID_ADPCM_SWF:
3147 case AV_CODEC_ID_ADPCM_MS:
3150 return av_get_exact_bits_per_sample(codec_id);
3154 int av_get_audio_frame_duration(AVCodecContext *avctx, int frame_bytes)
3156 int id, sr, ch, ba, tag, bps;
3158 id = avctx->codec_id;
3159 sr = avctx->sample_rate;
3160 ch = avctx->channels;
3161 ba = avctx->block_align;
3162 tag = avctx->codec_tag;
3163 bps = av_get_exact_bits_per_sample(avctx->codec_id);
3165 /* codecs with an exact constant bits per sample */
3166 if (bps > 0 && ch > 0 && frame_bytes > 0 && ch < 32768 && bps < 32768)
3167 return (frame_bytes * 8LL) / (bps * ch);
3168 bps = avctx->bits_per_coded_sample;
3170 /* codecs with a fixed packet duration */
3172 case AV_CODEC_ID_ADPCM_ADX: return 32;
3173 case AV_CODEC_ID_ADPCM_IMA_QT: return 64;
3174 case AV_CODEC_ID_ADPCM_EA_XAS: return 128;
3175 case AV_CODEC_ID_AMR_NB:
3176 case AV_CODEC_ID_EVRC:
3177 case AV_CODEC_ID_GSM:
3178 case AV_CODEC_ID_QCELP:
3179 case AV_CODEC_ID_RA_288: return 160;
3180 case AV_CODEC_ID_AMR_WB:
3181 case AV_CODEC_ID_GSM_MS: return 320;
3182 case AV_CODEC_ID_MP1: return 384;
3183 case AV_CODEC_ID_ATRAC1: return 512;
3184 case AV_CODEC_ID_ATRAC3: return 1024;
3185 case AV_CODEC_ID_MP2:
3186 case AV_CODEC_ID_MUSEPACK7: return 1152;
3187 case AV_CODEC_ID_AC3: return 1536;
3191 /* calc from sample rate */
3192 if (id == AV_CODEC_ID_TTA)
3193 return 256 * sr / 245;
3196 /* calc from sample rate and channels */
3197 if (id == AV_CODEC_ID_BINKAUDIO_DCT)
3198 return (480 << (sr / 22050)) / ch;
3203 /* calc from block_align */
3204 if (id == AV_CODEC_ID_SIPR) {
3206 case 20: return 160;
3207 case 19: return 144;
3208 case 29: return 288;
3209 case 37: return 480;
3211 } else if (id == AV_CODEC_ID_ILBC) {
3213 case 38: return 160;
3214 case 50: return 240;
3219 if (frame_bytes > 0) {
3220 /* calc from frame_bytes only */
3221 if (id == AV_CODEC_ID_TRUESPEECH)
3222 return 240 * (frame_bytes / 32);
3223 if (id == AV_CODEC_ID_NELLYMOSER)
3224 return 256 * (frame_bytes / 64);
3225 if (id == AV_CODEC_ID_RA_144)
3226 return 160 * (frame_bytes / 20);
3227 if (id == AV_CODEC_ID_G723_1)
3228 return 240 * (frame_bytes / 24);
3231 /* calc from frame_bytes and bits_per_coded_sample */
3232 if (id == AV_CODEC_ID_ADPCM_G726)
3233 return frame_bytes * 8 / bps;
3237 /* calc from frame_bytes and channels */
3239 case AV_CODEC_ID_ADPCM_AFC:
3240 return frame_bytes / (9 * ch) * 16;
3241 case AV_CODEC_ID_ADPCM_DTK:
3242 return frame_bytes / (16 * ch) * 28;
3243 case AV_CODEC_ID_ADPCM_4XM:
3244 case AV_CODEC_ID_ADPCM_IMA_ISS:
3245 return (frame_bytes - 4 * ch) * 2 / ch;
3246 case AV_CODEC_ID_ADPCM_IMA_SMJPEG:
3247 return (frame_bytes - 4) * 2 / ch;
3248 case AV_CODEC_ID_ADPCM_IMA_AMV:
3249 return (frame_bytes - 8) * 2 / ch;
3250 case AV_CODEC_ID_ADPCM_XA:
3251 return (frame_bytes / 128) * 224 / ch;
3252 case AV_CODEC_ID_INTERPLAY_DPCM:
3253 return (frame_bytes - 6 - ch) / ch;
3254 case AV_CODEC_ID_ROQ_DPCM:
3255 return (frame_bytes - 8) / ch;
3256 case AV_CODEC_ID_XAN_DPCM:
3257 return (frame_bytes - 2 * ch) / ch;
3258 case AV_CODEC_ID_MACE3:
3259 return 3 * frame_bytes / ch;
3260 case AV_CODEC_ID_MACE6:
3261 return 6 * frame_bytes / ch;
3262 case AV_CODEC_ID_PCM_LXF:
3263 return 2 * (frame_bytes / (5 * ch));
3264 case AV_CODEC_ID_IAC:
3265 case AV_CODEC_ID_IMC:
3266 return 4 * frame_bytes / ch;
3270 /* calc from frame_bytes, channels, and codec_tag */
3271 if (id == AV_CODEC_ID_SOL_DPCM) {
3273 return frame_bytes / ch;
3275 return frame_bytes * 2 / ch;
3280 /* calc from frame_bytes, channels, and block_align */
3281 int blocks = frame_bytes / ba;
3282 switch (avctx->codec_id) {
3283 case AV_CODEC_ID_ADPCM_IMA_WAV:
3284 if (bps < 2 || bps > 5)
3286 return blocks * (1 + (ba - 4 * ch) / (bps * ch) * 8);
3287 case AV_CODEC_ID_ADPCM_IMA_DK3:
3288 return blocks * (((ba - 16) * 2 / 3 * 4) / ch);
3289 case AV_CODEC_ID_ADPCM_IMA_DK4:
3290 return blocks * (1 + (ba - 4 * ch) * 2 / ch);
3291 case AV_CODEC_ID_ADPCM_IMA_RAD:
3292 return blocks * ((ba - 4 * ch) * 2 / ch);
3293 case AV_CODEC_ID_ADPCM_MS:
3294 return blocks * (2 + (ba - 7 * ch) * 2 / ch);
3299 /* calc from frame_bytes, channels, and bits_per_coded_sample */
3300 switch (avctx->codec_id) {
3301 case AV_CODEC_ID_PCM_DVD:
3304 return 2 * (frame_bytes / ((bps * 2 / 8) * ch));
3305 case AV_CODEC_ID_PCM_BLURAY:
3308 return frame_bytes / ((FFALIGN(ch, 2) * bps) / 8);
3309 case AV_CODEC_ID_S302M:
3310 return 2 * (frame_bytes / ((bps + 4) / 4)) / ch;
3320 int ff_thread_init(AVCodecContext *s)
3327 unsigned int av_xiphlacing(unsigned char *s, unsigned int v)
3341 int ff_match_2uint16(const uint16_t(*tab)[2], int size, int a, int b)
3344 for (i = 0; i < size && !(tab[i][0] == a && tab[i][1] == b); i++) ;
3348 #if FF_API_MISSING_SAMPLE
3349 FF_DISABLE_DEPRECATION_WARNINGS
3350 void av_log_missing_feature(void *avc, const char *feature, int want_sample)
3352 av_log(avc, AV_LOG_WARNING, "%s is not implemented. Update your FFmpeg "
3353 "version to the newest one from Git. If the problem still "
3354 "occurs, it means that your file has a feature which has not "
3355 "been implemented.\n", feature);
3357 av_log_ask_for_sample(avc, NULL);
3360 void av_log_ask_for_sample(void *avc, const char *msg, ...)
3362 va_list argument_list;
3364 va_start(argument_list, msg);
3367 av_vlog(avc, AV_LOG_WARNING, msg, argument_list);
3368 av_log(avc, AV_LOG_WARNING, "If you want to help, upload a sample "
3369 "of this file to ftp://upload.ffmpeg.org/incoming/ "
3370 "and contact the ffmpeg-devel mailing list. (ffmpeg-devel@ffmpeg.org)\n");
3372 va_end(argument_list);
3374 FF_ENABLE_DEPRECATION_WARNINGS
3375 #endif /* FF_API_MISSING_SAMPLE */
3377 static AVHWAccel *first_hwaccel = NULL;
3378 static AVHWAccel **last_hwaccel = &first_hwaccel;
3380 void av_register_hwaccel(AVHWAccel *hwaccel)
3382 AVHWAccel **p = last_hwaccel;
3383 hwaccel->next = NULL;
3384 while(*p || avpriv_atomic_ptr_cas((void * volatile *)p, NULL, hwaccel))
3386 last_hwaccel = &hwaccel->next;
3389 AVHWAccel *av_hwaccel_next(AVHWAccel *hwaccel)
3391 return hwaccel ? hwaccel->next : first_hwaccel;
3394 int av_lockmgr_register(int (*cb)(void **mutex, enum AVLockOp op))
3397 if (lockmgr_cb(&codec_mutex, AV_LOCK_DESTROY))
3399 if (lockmgr_cb(&avformat_mutex, AV_LOCK_DESTROY))
3406 if (lockmgr_cb(&codec_mutex, AV_LOCK_CREATE))
3408 if (lockmgr_cb(&avformat_mutex, AV_LOCK_CREATE))
3414 int ff_lock_avcodec(AVCodecContext *log_ctx)
3417 if ((*lockmgr_cb)(&codec_mutex, AV_LOCK_OBTAIN))
3420 entangled_thread_counter++;
3421 if (entangled_thread_counter != 1) {
3422 av_log(log_ctx, AV_LOG_ERROR, "Insufficient thread locking around avcodec_open/close()\n");
3424 av_log(log_ctx, AV_LOG_ERROR, "No lock manager is set, please see av_lockmgr_register()\n");
3425 ff_avcodec_locked = 1;
3426 ff_unlock_avcodec();
3427 return AVERROR(EINVAL);
3429 av_assert0(!ff_avcodec_locked);
3430 ff_avcodec_locked = 1;
3434 int ff_unlock_avcodec(void)
3436 av_assert0(ff_avcodec_locked);
3437 ff_avcodec_locked = 0;
3438 entangled_thread_counter--;
3440 if ((*lockmgr_cb)(&codec_mutex, AV_LOCK_RELEASE))
3446 int avpriv_lock_avformat(void)
3449 if ((*lockmgr_cb)(&avformat_mutex, AV_LOCK_OBTAIN))
3455 int avpriv_unlock_avformat(void)
3458 if ((*lockmgr_cb)(&avformat_mutex, AV_LOCK_RELEASE))
3464 unsigned int avpriv_toupper4(unsigned int x)
3466 return av_toupper(x & 0xFF) +
3467 (av_toupper((x >> 8) & 0xFF) << 8) +
3468 (av_toupper((x >> 16) & 0xFF) << 16) +
3469 ((unsigned)av_toupper((x >> 24) & 0xFF) << 24);
3472 int ff_thread_ref_frame(ThreadFrame *dst, ThreadFrame *src)
3476 dst->owner = src->owner;
3478 ret = av_frame_ref(dst->f, src->f);
3482 if (src->progress &&
3483 !(dst->progress = av_buffer_ref(src->progress))) {
3484 ff_thread_release_buffer(dst->owner, dst);
3485 return AVERROR(ENOMEM);
3493 enum AVPixelFormat ff_thread_get_format(AVCodecContext *avctx, const enum AVPixelFormat *fmt)
3495 return ff_get_format(avctx, fmt);
3498 int ff_thread_get_buffer(AVCodecContext *avctx, ThreadFrame *f, int flags)
3501 return ff_get_buffer(avctx, f->f, flags);
3504 void ff_thread_release_buffer(AVCodecContext *avctx, ThreadFrame *f)
3507 av_frame_unref(f->f);
3510 void ff_thread_finish_setup(AVCodecContext *avctx)
3514 void ff_thread_report_progress(ThreadFrame *f, int progress, int field)
3518 void ff_thread_await_progress(ThreadFrame *f, int progress, int field)
3522 int ff_thread_can_start_frame(AVCodecContext *avctx)
3527 int ff_alloc_entries(AVCodecContext *avctx, int count)
3532 void ff_reset_entries(AVCodecContext *avctx)
3536 void ff_thread_await_progress2(AVCodecContext *avctx, int field, int thread, int shift)
3540 void ff_thread_report_progress2(AVCodecContext *avctx, int field, int thread, int n)
3546 enum AVMediaType avcodec_get_type(enum AVCodecID codec_id)
3548 AVCodec *c= avcodec_find_decoder(codec_id);
3550 c= avcodec_find_encoder(codec_id);
3554 if (codec_id <= AV_CODEC_ID_NONE)
3555 return AVMEDIA_TYPE_UNKNOWN;
3556 else if (codec_id < AV_CODEC_ID_FIRST_AUDIO)
3557 return AVMEDIA_TYPE_VIDEO;
3558 else if (codec_id < AV_CODEC_ID_FIRST_SUBTITLE)
3559 return AVMEDIA_TYPE_AUDIO;
3560 else if (codec_id < AV_CODEC_ID_FIRST_UNKNOWN)
3561 return AVMEDIA_TYPE_SUBTITLE;
3563 return AVMEDIA_TYPE_UNKNOWN;
3566 int avcodec_is_open(AVCodecContext *s)
3568 return !!s->internal;
3571 int avpriv_bprint_to_extradata(AVCodecContext *avctx, struct AVBPrint *buf)
3576 ret = av_bprint_finalize(buf, &str);
3579 avctx->extradata = str;
3580 /* Note: the string is NUL terminated (so extradata can be read as a
3581 * string), but the ending character is not accounted in the size (in
3582 * binary formats you are likely not supposed to mux that character). When
3583 * extradata is copied, it is also padded with FF_INPUT_BUFFER_PADDING_SIZE
3585 avctx->extradata_size = buf->len;
3589 const uint8_t *avpriv_find_start_code(const uint8_t *av_restrict p,
3591 uint32_t *av_restrict state)
3595 av_assert0(p <= end);
3599 for (i = 0; i < 3; i++) {
3600 uint32_t tmp = *state << 8;
3601 *state = tmp + *(p++);
3602 if (tmp == 0x100 || p == end)
3607 if (p[-1] > 1 ) p += 3;
3608 else if (p[-2] ) p += 2;
3609 else if (p[-3]|(p[-1]-1)) p++;
3616 p = FFMIN(p, end) - 4;
3617 *state = AV_RB32(p);