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"
49 #include "bytestream.h"
62 #include "compat/w32pthreads.h"
64 #include "compat/os2threads.h"
67 #if HAVE_PTHREADS || HAVE_W32THREADS || HAVE_OS2THREADS
68 static int default_lockmgr_cb(void **arg, enum AVLockOp op)
70 void * volatile * mutex = arg;
78 pthread_mutex_t *tmp = av_malloc(sizeof(pthread_mutex_t));
80 return AVERROR(ENOMEM);
81 if ((err = pthread_mutex_init(tmp, NULL))) {
85 if (avpriv_atomic_ptr_cas(mutex, NULL, tmp)) {
86 pthread_mutex_destroy(tmp);
91 if ((err = pthread_mutex_lock(*mutex)))
96 if ((err = pthread_mutex_unlock(*mutex)))
100 case AV_LOCK_DESTROY:
102 pthread_mutex_destroy(*mutex);
104 avpriv_atomic_ptr_cas(mutex, *mutex, NULL);
109 static int (*lockmgr_cb)(void **mutex, enum AVLockOp op) = default_lockmgr_cb;
111 static int (*lockmgr_cb)(void **mutex, enum AVLockOp op) = NULL;
115 volatile int ff_avcodec_locked;
116 static int volatile entangled_thread_counter = 0;
117 static void *codec_mutex;
118 static void *avformat_mutex;
120 #if CONFIG_RAISE_MAJOR
121 # define LIBNAME "LIBAVCODEC_155"
123 # define LIBNAME "LIBAVCODEC_55"
126 #if FF_API_FAST_MALLOC && CONFIG_SHARED && HAVE_SYMVER
127 FF_SYMVER(void*, av_fast_realloc, (void *ptr, unsigned int *size, size_t min_size), LIBNAME)
129 return av_fast_realloc(ptr, size, min_size);
132 FF_SYMVER(void, av_fast_malloc, (void *ptr, unsigned int *size, size_t min_size), LIBNAME)
134 av_fast_malloc(ptr, size, min_size);
138 static inline int ff_fast_malloc(void *ptr, unsigned int *size, size_t min_size, int zero_realloc)
141 if (min_size < *size)
143 min_size = FFMAX(17 * min_size / 16 + 32, min_size);
145 *p = zero_realloc ? av_mallocz(min_size) : av_malloc(min_size);
152 void av_fast_padded_malloc(void *ptr, unsigned int *size, size_t min_size)
155 if (min_size > SIZE_MAX - FF_INPUT_BUFFER_PADDING_SIZE) {
160 if (!ff_fast_malloc(p, size, min_size + FF_INPUT_BUFFER_PADDING_SIZE, 1))
161 memset(*p + min_size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
164 void av_fast_padded_mallocz(void *ptr, unsigned int *size, size_t min_size)
167 if (min_size > SIZE_MAX - FF_INPUT_BUFFER_PADDING_SIZE) {
172 if (!ff_fast_malloc(p, size, min_size + FF_INPUT_BUFFER_PADDING_SIZE, 1))
173 memset(*p, 0, min_size + FF_INPUT_BUFFER_PADDING_SIZE);
176 /* encoder management */
177 static AVCodec *first_avcodec = NULL;
178 static AVCodec **last_avcodec = &first_avcodec;
180 AVCodec *av_codec_next(const AVCodec *c)
185 return first_avcodec;
188 static av_cold void avcodec_init(void)
190 static int initialized = 0;
192 if (initialized != 0)
197 ff_dsputil_static_init();
200 int av_codec_is_encoder(const AVCodec *codec)
202 return codec && (codec->encode_sub || codec->encode2);
205 int av_codec_is_decoder(const AVCodec *codec)
207 return codec && codec->decode;
210 av_cold void avcodec_register(AVCodec *codec)
217 while(*p || avpriv_atomic_ptr_cas((void * volatile *)p, NULL, codec))
219 last_avcodec = &codec->next;
221 if (codec->init_static_data)
222 codec->init_static_data(codec);
226 unsigned avcodec_get_edge_width(void)
232 #if FF_API_SET_DIMENSIONS
233 void avcodec_set_dimensions(AVCodecContext *s, int width, int height)
235 int ret = ff_set_dimensions(s, width, height);
237 av_log(s, AV_LOG_WARNING, "Failed to set dimensions %d %d\n", width, height);
242 int ff_set_dimensions(AVCodecContext *s, int width, int height)
244 int ret = av_image_check_size(width, height, 0, s);
249 s->coded_width = width;
250 s->coded_height = height;
251 s->width = FF_CEIL_RSHIFT(width, s->lowres);
252 s->height = FF_CEIL_RSHIFT(height, s->lowres);
257 int ff_side_data_update_matrix_encoding(AVFrame *frame,
258 enum AVMatrixEncoding matrix_encoding)
260 AVFrameSideData *side_data;
261 enum AVMatrixEncoding *data;
263 side_data = av_frame_get_side_data(frame, AV_FRAME_DATA_MATRIXENCODING);
265 side_data = av_frame_new_side_data(frame, AV_FRAME_DATA_MATRIXENCODING,
266 sizeof(enum AVMatrixEncoding));
269 return AVERROR(ENOMEM);
271 data = (enum AVMatrixEncoding*)side_data->data;
272 *data = matrix_encoding;
277 #if HAVE_NEON || ARCH_PPC || HAVE_MMX
278 # define STRIDE_ALIGN 16
280 # define STRIDE_ALIGN 8
283 void avcodec_align_dimensions2(AVCodecContext *s, int *width, int *height,
284 int linesize_align[AV_NUM_DATA_POINTERS])
290 switch (s->pix_fmt) {
291 case AV_PIX_FMT_YUV420P:
292 case AV_PIX_FMT_YUYV422:
293 case AV_PIX_FMT_UYVY422:
294 case AV_PIX_FMT_YUV422P:
295 case AV_PIX_FMT_YUV440P:
296 case AV_PIX_FMT_YUV444P:
297 case AV_PIX_FMT_GBRAP:
298 case AV_PIX_FMT_GBRP:
299 case AV_PIX_FMT_GRAY8:
300 case AV_PIX_FMT_GRAY16BE:
301 case AV_PIX_FMT_GRAY16LE:
302 case AV_PIX_FMT_YUVJ420P:
303 case AV_PIX_FMT_YUVJ422P:
304 case AV_PIX_FMT_YUVJ440P:
305 case AV_PIX_FMT_YUVJ444P:
306 case AV_PIX_FMT_YUVA420P:
307 case AV_PIX_FMT_YUVA422P:
308 case AV_PIX_FMT_YUVA444P:
309 case AV_PIX_FMT_YUV420P9LE:
310 case AV_PIX_FMT_YUV420P9BE:
311 case AV_PIX_FMT_YUV420P10LE:
312 case AV_PIX_FMT_YUV420P10BE:
313 case AV_PIX_FMT_YUV420P12LE:
314 case AV_PIX_FMT_YUV420P12BE:
315 case AV_PIX_FMT_YUV420P14LE:
316 case AV_PIX_FMT_YUV420P14BE:
317 case AV_PIX_FMT_YUV420P16LE:
318 case AV_PIX_FMT_YUV420P16BE:
319 case AV_PIX_FMT_YUVA420P9LE:
320 case AV_PIX_FMT_YUVA420P9BE:
321 case AV_PIX_FMT_YUVA420P10LE:
322 case AV_PIX_FMT_YUVA420P10BE:
323 case AV_PIX_FMT_YUVA420P16LE:
324 case AV_PIX_FMT_YUVA420P16BE:
325 case AV_PIX_FMT_YUV422P9LE:
326 case AV_PIX_FMT_YUV422P9BE:
327 case AV_PIX_FMT_YUV422P10LE:
328 case AV_PIX_FMT_YUV422P10BE:
329 case AV_PIX_FMT_YUV422P12LE:
330 case AV_PIX_FMT_YUV422P12BE:
331 case AV_PIX_FMT_YUV422P14LE:
332 case AV_PIX_FMT_YUV422P14BE:
333 case AV_PIX_FMT_YUV422P16LE:
334 case AV_PIX_FMT_YUV422P16BE:
335 case AV_PIX_FMT_YUVA422P9LE:
336 case AV_PIX_FMT_YUVA422P9BE:
337 case AV_PIX_FMT_YUVA422P10LE:
338 case AV_PIX_FMT_YUVA422P10BE:
339 case AV_PIX_FMT_YUVA422P16LE:
340 case AV_PIX_FMT_YUVA422P16BE:
341 case AV_PIX_FMT_YUV444P9LE:
342 case AV_PIX_FMT_YUV444P9BE:
343 case AV_PIX_FMT_YUV444P10LE:
344 case AV_PIX_FMT_YUV444P10BE:
345 case AV_PIX_FMT_YUV444P12LE:
346 case AV_PIX_FMT_YUV444P12BE:
347 case AV_PIX_FMT_YUV444P14LE:
348 case AV_PIX_FMT_YUV444P14BE:
349 case AV_PIX_FMT_YUV444P16LE:
350 case AV_PIX_FMT_YUV444P16BE:
351 case AV_PIX_FMT_YUVA444P9LE:
352 case AV_PIX_FMT_YUVA444P9BE:
353 case AV_PIX_FMT_YUVA444P10LE:
354 case AV_PIX_FMT_YUVA444P10BE:
355 case AV_PIX_FMT_YUVA444P16LE:
356 case AV_PIX_FMT_YUVA444P16BE:
357 case AV_PIX_FMT_GBRP9LE:
358 case AV_PIX_FMT_GBRP9BE:
359 case AV_PIX_FMT_GBRP10LE:
360 case AV_PIX_FMT_GBRP10BE:
361 case AV_PIX_FMT_GBRP12LE:
362 case AV_PIX_FMT_GBRP12BE:
363 case AV_PIX_FMT_GBRP14LE:
364 case AV_PIX_FMT_GBRP14BE:
365 w_align = 16; //FIXME assume 16 pixel per macroblock
366 h_align = 16 * 2; // interlaced needs 2 macroblocks height
368 case AV_PIX_FMT_YUV411P:
369 case AV_PIX_FMT_YUVJ411P:
370 case AV_PIX_FMT_UYYVYY411:
374 case AV_PIX_FMT_YUV410P:
375 if (s->codec_id == AV_CODEC_ID_SVQ1) {
380 case AV_PIX_FMT_RGB555:
381 if (s->codec_id == AV_CODEC_ID_RPZA) {
386 case AV_PIX_FMT_PAL8:
387 case AV_PIX_FMT_BGR8:
388 case AV_PIX_FMT_RGB8:
389 if (s->codec_id == AV_CODEC_ID_SMC ||
390 s->codec_id == AV_CODEC_ID_CINEPAK) {
395 case AV_PIX_FMT_BGR24:
396 if ((s->codec_id == AV_CODEC_ID_MSZH) ||
397 (s->codec_id == AV_CODEC_ID_ZLIB)) {
402 case AV_PIX_FMT_RGB24:
403 if (s->codec_id == AV_CODEC_ID_CINEPAK) {
414 if (s->codec_id == AV_CODEC_ID_IFF_ILBM || s->codec_id == AV_CODEC_ID_IFF_BYTERUN1) {
415 w_align = FFMAX(w_align, 8);
418 *width = FFALIGN(*width, w_align);
419 *height = FFALIGN(*height, h_align);
420 if (s->codec_id == AV_CODEC_ID_H264 || s->lowres)
421 // some of the optimized chroma MC reads one line too much
422 // which is also done in mpeg decoders with lowres > 0
425 for (i = 0; i < 4; i++)
426 linesize_align[i] = STRIDE_ALIGN;
429 void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height)
431 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(s->pix_fmt);
432 int chroma_shift = desc->log2_chroma_w;
433 int linesize_align[AV_NUM_DATA_POINTERS];
436 avcodec_align_dimensions2(s, width, height, linesize_align);
437 align = FFMAX(linesize_align[0], linesize_align[3]);
438 linesize_align[1] <<= chroma_shift;
439 linesize_align[2] <<= chroma_shift;
440 align = FFMAX3(align, linesize_align[1], linesize_align[2]);
441 *width = FFALIGN(*width, align);
444 int avcodec_enum_to_chroma_pos(int *xpos, int *ypos, enum AVChromaLocation pos)
446 if (pos <= AVCHROMA_LOC_UNSPECIFIED || pos >= AVCHROMA_LOC_NB)
447 return AVERROR(EINVAL);
450 *xpos = (pos&1) * 128;
451 *ypos = ((pos>>1)^(pos<4)) * 128;
456 enum AVChromaLocation avcodec_chroma_pos_to_enum(int xpos, int ypos)
460 for (pos = AVCHROMA_LOC_UNSPECIFIED + 1; pos < AVCHROMA_LOC_NB; pos++) {
461 if (avcodec_enum_to_chroma_pos(&xout, &yout, pos) == 0 && xout == xpos && yout == ypos)
464 return AVCHROMA_LOC_UNSPECIFIED;
467 int avcodec_fill_audio_frame(AVFrame *frame, int nb_channels,
468 enum AVSampleFormat sample_fmt, const uint8_t *buf,
469 int buf_size, int align)
471 int ch, planar, needed_size, ret = 0;
473 needed_size = av_samples_get_buffer_size(NULL, nb_channels,
474 frame->nb_samples, sample_fmt,
476 if (buf_size < needed_size)
477 return AVERROR(EINVAL);
479 planar = av_sample_fmt_is_planar(sample_fmt);
480 if (planar && nb_channels > AV_NUM_DATA_POINTERS) {
481 if (!(frame->extended_data = av_mallocz(nb_channels *
482 sizeof(*frame->extended_data))))
483 return AVERROR(ENOMEM);
485 frame->extended_data = frame->data;
488 if ((ret = av_samples_fill_arrays(frame->extended_data, &frame->linesize[0],
489 (uint8_t *)(intptr_t)buf, nb_channels, frame->nb_samples,
490 sample_fmt, align)) < 0) {
491 if (frame->extended_data != frame->data)
492 av_freep(&frame->extended_data);
495 if (frame->extended_data != frame->data) {
496 for (ch = 0; ch < AV_NUM_DATA_POINTERS; ch++)
497 frame->data[ch] = frame->extended_data[ch];
503 static int update_frame_pool(AVCodecContext *avctx, AVFrame *frame)
505 FramePool *pool = avctx->internal->pool;
508 switch (avctx->codec_type) {
509 case AVMEDIA_TYPE_VIDEO: {
512 int w = frame->width;
513 int h = frame->height;
514 int tmpsize, unaligned;
516 if (pool->format == frame->format &&
517 pool->width == frame->width && pool->height == frame->height)
520 avcodec_align_dimensions2(avctx, &w, &h, pool->stride_align);
522 if (!(avctx->flags & CODEC_FLAG_EMU_EDGE)) {
528 // NOTE: do not align linesizes individually, this breaks e.g. assumptions
529 // that linesize[0] == 2*linesize[1] in the MPEG-encoder for 4:2:2
530 av_image_fill_linesizes(picture.linesize, avctx->pix_fmt, w);
531 // increase alignment of w for next try (rhs gives the lowest bit set in w)
535 for (i = 0; i < 4; i++)
536 unaligned |= picture.linesize[i] % pool->stride_align[i];
539 tmpsize = av_image_fill_pointers(picture.data, avctx->pix_fmt, h,
540 NULL, picture.linesize);
544 for (i = 0; i < 3 && picture.data[i + 1]; i++)
545 size[i] = picture.data[i + 1] - picture.data[i];
546 size[i] = tmpsize - (picture.data[i] - picture.data[0]);
548 for (i = 0; i < 4; i++) {
549 av_buffer_pool_uninit(&pool->pools[i]);
550 pool->linesize[i] = picture.linesize[i];
552 pool->pools[i] = av_buffer_pool_init(size[i] + 16 + STRIDE_ALIGN - 1,
553 CONFIG_MEMORY_POISONING ?
556 if (!pool->pools[i]) {
557 ret = AVERROR(ENOMEM);
562 pool->format = frame->format;
563 pool->width = frame->width;
564 pool->height = frame->height;
568 case AVMEDIA_TYPE_AUDIO: {
569 int ch = av_frame_get_channels(frame); //av_get_channel_layout_nb_channels(frame->channel_layout);
570 int planar = av_sample_fmt_is_planar(frame->format);
571 int planes = planar ? ch : 1;
573 if (pool->format == frame->format && pool->planes == planes &&
574 pool->channels == ch && frame->nb_samples == pool->samples)
577 av_buffer_pool_uninit(&pool->pools[0]);
578 ret = av_samples_get_buffer_size(&pool->linesize[0], ch,
579 frame->nb_samples, frame->format, 0);
583 pool->pools[0] = av_buffer_pool_init(pool->linesize[0], NULL);
584 if (!pool->pools[0]) {
585 ret = AVERROR(ENOMEM);
589 pool->format = frame->format;
590 pool->planes = planes;
592 pool->samples = frame->nb_samples;
595 default: av_assert0(0);
599 for (i = 0; i < 4; i++)
600 av_buffer_pool_uninit(&pool->pools[i]);
602 pool->planes = pool->channels = pool->samples = 0;
603 pool->width = pool->height = 0;
607 static int audio_get_buffer(AVCodecContext *avctx, AVFrame *frame)
609 FramePool *pool = avctx->internal->pool;
610 int planes = pool->planes;
613 frame->linesize[0] = pool->linesize[0];
615 if (planes > AV_NUM_DATA_POINTERS) {
616 frame->extended_data = av_mallocz(planes * sizeof(*frame->extended_data));
617 frame->nb_extended_buf = planes - AV_NUM_DATA_POINTERS;
618 frame->extended_buf = av_mallocz(frame->nb_extended_buf *
619 sizeof(*frame->extended_buf));
620 if (!frame->extended_data || !frame->extended_buf) {
621 av_freep(&frame->extended_data);
622 av_freep(&frame->extended_buf);
623 return AVERROR(ENOMEM);
626 frame->extended_data = frame->data;
627 av_assert0(frame->nb_extended_buf == 0);
630 for (i = 0; i < FFMIN(planes, AV_NUM_DATA_POINTERS); i++) {
631 frame->buf[i] = av_buffer_pool_get(pool->pools[0]);
634 frame->extended_data[i] = frame->data[i] = frame->buf[i]->data;
636 for (i = 0; i < frame->nb_extended_buf; i++) {
637 frame->extended_buf[i] = av_buffer_pool_get(pool->pools[0]);
638 if (!frame->extended_buf[i])
640 frame->extended_data[i + AV_NUM_DATA_POINTERS] = frame->extended_buf[i]->data;
643 if (avctx->debug & FF_DEBUG_BUFFERS)
644 av_log(avctx, AV_LOG_DEBUG, "default_get_buffer called on frame %p", frame);
648 av_frame_unref(frame);
649 return AVERROR(ENOMEM);
652 static int video_get_buffer(AVCodecContext *s, AVFrame *pic)
654 FramePool *pool = s->internal->pool;
655 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pic->format);
656 int pixel_size = desc->comp[0].step_minus1 + 1;
657 int h_chroma_shift, v_chroma_shift;
660 if (pic->data[0] != NULL) {
661 av_log(s, AV_LOG_ERROR, "pic->data[0]!=NULL in avcodec_default_get_buffer\n");
665 memset(pic->data, 0, sizeof(pic->data));
666 pic->extended_data = pic->data;
668 av_pix_fmt_get_chroma_sub_sample(s->pix_fmt, &h_chroma_shift, &v_chroma_shift);
670 for (i = 0; i < 4 && pool->pools[i]; i++) {
671 const int h_shift = i == 0 ? 0 : h_chroma_shift;
672 const int v_shift = i == 0 ? 0 : v_chroma_shift;
673 int is_planar = pool->pools[2] || (i==0 && s->pix_fmt == AV_PIX_FMT_GRAY8);
675 pic->linesize[i] = pool->linesize[i];
677 pic->buf[i] = av_buffer_pool_get(pool->pools[i]);
681 // no edge if EDGE EMU or not planar YUV
682 if ((s->flags & CODEC_FLAG_EMU_EDGE) || !is_planar)
683 pic->data[i] = pic->buf[i]->data;
685 pic->data[i] = pic->buf[i]->data +
686 FFALIGN((pic->linesize[i] * EDGE_WIDTH >> v_shift) +
687 (pixel_size * EDGE_WIDTH >> h_shift), pool->stride_align[i]);
690 for (; i < AV_NUM_DATA_POINTERS; i++) {
692 pic->linesize[i] = 0;
694 if (pic->data[1] && !pic->data[2])
695 avpriv_set_systematic_pal2((uint32_t *)pic->data[1], s->pix_fmt);
697 if (s->debug & FF_DEBUG_BUFFERS)
698 av_log(s, AV_LOG_DEBUG, "default_get_buffer called on pic %p\n", pic);
703 return AVERROR(ENOMEM);
706 void avpriv_color_frame(AVFrame *frame, const int c[4])
708 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(frame->format);
711 av_assert0(desc->flags & AV_PIX_FMT_FLAG_PLANAR);
713 for (p = 0; p<desc->nb_components; p++) {
714 uint8_t *dst = frame->data[p];
715 int is_chroma = p == 1 || p == 2;
716 int bytes = is_chroma ? FF_CEIL_RSHIFT(frame->width, desc->log2_chroma_w) : frame->width;
717 int height = is_chroma ? FF_CEIL_RSHIFT(frame->height, desc->log2_chroma_h) : frame->height;
718 for (y = 0; y < height; y++) {
719 if (desc->comp[0].depth_minus1 >= 8) {
720 for (x = 0; x<bytes; x++)
721 ((uint16_t*)dst)[x] = c[p];
723 memset(dst, c[p], bytes);
724 dst += frame->linesize[p];
729 int avcodec_default_get_buffer2(AVCodecContext *avctx, AVFrame *frame, int flags)
733 if ((ret = update_frame_pool(avctx, frame)) < 0)
736 #if FF_API_GET_BUFFER
737 FF_DISABLE_DEPRECATION_WARNINGS
738 frame->type = FF_BUFFER_TYPE_INTERNAL;
739 FF_ENABLE_DEPRECATION_WARNINGS
742 switch (avctx->codec_type) {
743 case AVMEDIA_TYPE_VIDEO:
744 return video_get_buffer(avctx, frame);
745 case AVMEDIA_TYPE_AUDIO:
746 return audio_get_buffer(avctx, frame);
752 int ff_init_buffer_info(AVCodecContext *avctx, AVFrame *frame)
754 if (avctx->internal->pkt) {
755 frame->pkt_pts = avctx->internal->pkt->pts;
756 av_frame_set_pkt_pos (frame, avctx->internal->pkt->pos);
757 av_frame_set_pkt_duration(frame, avctx->internal->pkt->duration);
758 av_frame_set_pkt_size (frame, avctx->internal->pkt->size);
760 frame->pkt_pts = AV_NOPTS_VALUE;
761 av_frame_set_pkt_pos (frame, -1);
762 av_frame_set_pkt_duration(frame, 0);
763 av_frame_set_pkt_size (frame, -1);
765 frame->reordered_opaque = avctx->reordered_opaque;
767 switch (avctx->codec->type) {
768 case AVMEDIA_TYPE_VIDEO:
769 frame->format = avctx->pix_fmt;
770 if (!frame->sample_aspect_ratio.num)
771 frame->sample_aspect_ratio = avctx->sample_aspect_ratio;
772 if (av_frame_get_colorspace(frame) == AVCOL_SPC_UNSPECIFIED)
773 av_frame_set_colorspace(frame, avctx->colorspace);
774 if (av_frame_get_color_range(frame) == AVCOL_RANGE_UNSPECIFIED)
775 av_frame_set_color_range(frame, avctx->color_range);
777 case AVMEDIA_TYPE_AUDIO:
778 if (!frame->sample_rate)
779 frame->sample_rate = avctx->sample_rate;
780 if (frame->format < 0)
781 frame->format = avctx->sample_fmt;
782 if (!frame->channel_layout) {
783 if (avctx->channel_layout) {
784 if (av_get_channel_layout_nb_channels(avctx->channel_layout) !=
786 av_log(avctx, AV_LOG_ERROR, "Inconsistent channel "
788 return AVERROR(EINVAL);
791 frame->channel_layout = avctx->channel_layout;
793 if (avctx->channels > FF_SANE_NB_CHANNELS) {
794 av_log(avctx, AV_LOG_ERROR, "Too many channels: %d.\n",
796 return AVERROR(ENOSYS);
800 av_frame_set_channels(frame, avctx->channels);
806 #if FF_API_GET_BUFFER
807 FF_DISABLE_DEPRECATION_WARNINGS
808 int avcodec_default_get_buffer(AVCodecContext *avctx, AVFrame *frame)
810 return avcodec_default_get_buffer2(avctx, frame, 0);
813 typedef struct CompatReleaseBufPriv {
814 AVCodecContext avctx;
816 } CompatReleaseBufPriv;
818 static void compat_free_buffer(void *opaque, uint8_t *data)
820 CompatReleaseBufPriv *priv = opaque;
821 if (priv->avctx.release_buffer)
822 priv->avctx.release_buffer(&priv->avctx, &priv->frame);
826 static void compat_release_buffer(void *opaque, uint8_t *data)
828 AVBufferRef *buf = opaque;
829 av_buffer_unref(&buf);
831 FF_ENABLE_DEPRECATION_WARNINGS
834 static int get_buffer_internal(AVCodecContext *avctx, AVFrame *frame, int flags)
836 int override_dimensions = 1;
839 if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
840 if ((ret = av_image_check_size(avctx->width, avctx->height, 0, avctx)) < 0 || avctx->pix_fmt<0) {
841 av_log(avctx, AV_LOG_ERROR, "video_get_buffer: image parameters invalid\n");
842 return AVERROR(EINVAL);
845 if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
846 if (frame->width <= 0 || frame->height <= 0) {
847 frame->width = FFMAX(avctx->width, FF_CEIL_RSHIFT(avctx->coded_width, avctx->lowres));
848 frame->height = FFMAX(avctx->height, FF_CEIL_RSHIFT(avctx->coded_height, avctx->lowres));
849 override_dimensions = 0;
852 if ((ret = ff_init_buffer_info(avctx, frame)) < 0)
855 #if FF_API_GET_BUFFER
856 FF_DISABLE_DEPRECATION_WARNINGS
858 * Wrap an old get_buffer()-allocated buffer in a bunch of AVBuffers.
859 * We wrap each plane in its own AVBuffer. Each of those has a reference to
860 * a dummy AVBuffer as its private data, unreffing it on free.
861 * When all the planes are freed, the dummy buffer's free callback calls
864 if (avctx->get_buffer) {
865 CompatReleaseBufPriv *priv = NULL;
866 AVBufferRef *dummy_buf = NULL;
869 if (flags & AV_GET_BUFFER_FLAG_REF)
870 frame->reference = 1;
872 ret = avctx->get_buffer(avctx, frame);
876 /* return if the buffers are already set up
877 * this would happen e.g. when a custom get_buffer() calls
878 * avcodec_default_get_buffer
883 priv = av_mallocz(sizeof(*priv));
885 ret = AVERROR(ENOMEM);
888 priv->avctx = *avctx;
889 priv->frame = *frame;
891 dummy_buf = av_buffer_create(NULL, 0, compat_free_buffer, priv, 0);
893 ret = AVERROR(ENOMEM);
897 #define WRAP_PLANE(ref_out, data, data_size) \
899 AVBufferRef *dummy_ref = av_buffer_ref(dummy_buf); \
901 ret = AVERROR(ENOMEM); \
904 ref_out = av_buffer_create(data, data_size, compat_release_buffer, \
907 av_frame_unref(frame); \
908 ret = AVERROR(ENOMEM); \
913 if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
914 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(frame->format);
916 planes = av_pix_fmt_count_planes(frame->format);
917 /* workaround for AVHWAccel plane count of 0, buf[0] is used as
918 check for allocated buffers: make libavcodec happy */
919 if (desc && desc->flags & AV_PIX_FMT_FLAG_HWACCEL)
921 if (!desc || planes <= 0) {
922 ret = AVERROR(EINVAL);
926 for (i = 0; i < planes; i++) {
927 int v_shift = (i == 1 || i == 2) ? desc->log2_chroma_h : 0;
928 int plane_size = (frame->height >> v_shift) * frame->linesize[i];
930 WRAP_PLANE(frame->buf[i], frame->data[i], plane_size);
933 int planar = av_sample_fmt_is_planar(frame->format);
934 planes = planar ? avctx->channels : 1;
936 if (planes > FF_ARRAY_ELEMS(frame->buf)) {
937 frame->nb_extended_buf = planes - FF_ARRAY_ELEMS(frame->buf);
938 frame->extended_buf = av_malloc(sizeof(*frame->extended_buf) *
939 frame->nb_extended_buf);
940 if (!frame->extended_buf) {
941 ret = AVERROR(ENOMEM);
946 for (i = 0; i < FFMIN(planes, FF_ARRAY_ELEMS(frame->buf)); i++)
947 WRAP_PLANE(frame->buf[i], frame->extended_data[i], frame->linesize[0]);
949 for (i = 0; i < frame->nb_extended_buf; i++)
950 WRAP_PLANE(frame->extended_buf[i],
951 frame->extended_data[i + FF_ARRAY_ELEMS(frame->buf)],
955 av_buffer_unref(&dummy_buf);
958 frame->width = avctx->width;
959 frame->height = avctx->height;
964 avctx->release_buffer(avctx, frame);
966 av_buffer_unref(&dummy_buf);
969 FF_ENABLE_DEPRECATION_WARNINGS
972 ret = avctx->get_buffer2(avctx, frame, flags);
974 if (avctx->codec_type == AVMEDIA_TYPE_VIDEO && !override_dimensions) {
975 frame->width = avctx->width;
976 frame->height = avctx->height;
982 int ff_get_buffer(AVCodecContext *avctx, AVFrame *frame, int flags)
984 int ret = get_buffer_internal(avctx, frame, flags);
986 av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
990 static int reget_buffer_internal(AVCodecContext *avctx, AVFrame *frame)
995 av_assert0(avctx->codec_type == AVMEDIA_TYPE_VIDEO);
997 if (frame->data[0] && (frame->width != avctx->width || frame->height != avctx->height || frame->format != avctx->pix_fmt)) {
998 av_log(avctx, AV_LOG_WARNING, "Picture changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s in reget buffer()\n",
999 frame->width, frame->height, av_get_pix_fmt_name(frame->format), avctx->width, avctx->height, av_get_pix_fmt_name(avctx->pix_fmt));
1000 av_frame_unref(frame);
1003 ff_init_buffer_info(avctx, frame);
1005 if (!frame->data[0])
1006 return ff_get_buffer(avctx, frame, AV_GET_BUFFER_FLAG_REF);
1008 if (av_frame_is_writable(frame)) {
1009 frame->pkt_pts = avctx->internal->pkt ? avctx->internal->pkt->pts : AV_NOPTS_VALUE;
1010 frame->reordered_opaque = avctx->reordered_opaque;
1014 tmp = av_frame_alloc();
1016 return AVERROR(ENOMEM);
1018 av_frame_move_ref(tmp, frame);
1020 ret = ff_get_buffer(avctx, frame, AV_GET_BUFFER_FLAG_REF);
1022 av_frame_free(&tmp);
1026 av_frame_copy(frame, tmp);
1027 av_frame_free(&tmp);
1032 int ff_reget_buffer(AVCodecContext *avctx, AVFrame *frame)
1034 int ret = reget_buffer_internal(avctx, frame);
1036 av_log(avctx, AV_LOG_ERROR, "reget_buffer() failed\n");
1040 #if FF_API_GET_BUFFER
1041 void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic)
1043 av_assert0(s->codec_type == AVMEDIA_TYPE_VIDEO);
1045 av_frame_unref(pic);
1048 int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic)
1055 int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2), void *arg, int *ret, int count, int size)
1059 for (i = 0; i < count; i++) {
1060 int r = func(c, (char *)arg + i * size);
1067 int avcodec_default_execute2(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2, int jobnr, int threadnr), void *arg, int *ret, int count)
1071 for (i = 0; i < count; i++) {
1072 int r = func(c, arg, i, 0);
1079 static int is_hwaccel_pix_fmt(enum AVPixelFormat pix_fmt)
1081 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
1082 return desc->flags & AV_PIX_FMT_FLAG_HWACCEL;
1085 enum AVPixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum AVPixelFormat *fmt)
1087 while (*fmt != AV_PIX_FMT_NONE && is_hwaccel_pix_fmt(*fmt))
1092 #if FF_API_AVFRAME_LAVC
1093 void avcodec_get_frame_defaults(AVFrame *frame)
1095 #if LIBAVCODEC_VERSION_MAJOR >= 55
1096 // extended_data should explicitly be freed when needed, this code is unsafe currently
1097 // also this is not compatible to the <55 ABI/API
1098 if (frame->extended_data != frame->data && 0)
1099 av_freep(&frame->extended_data);
1102 memset(frame, 0, sizeof(AVFrame));
1103 av_frame_unref(frame);
1106 AVFrame *avcodec_alloc_frame(void)
1108 return av_frame_alloc();
1111 void avcodec_free_frame(AVFrame **frame)
1113 av_frame_free(frame);
1117 MAKE_ACCESSORS(AVCodecContext, codec, AVRational, pkt_timebase)
1118 MAKE_ACCESSORS(AVCodecContext, codec, const AVCodecDescriptor *, codec_descriptor)
1119 MAKE_ACCESSORS(AVCodecContext, codec, int, lowres)
1120 MAKE_ACCESSORS(AVCodecContext, codec, int, seek_preroll)
1121 MAKE_ACCESSORS(AVCodecContext, codec, uint16_t*, chroma_intra_matrix)
1123 int av_codec_get_max_lowres(const AVCodec *codec)
1125 return codec->max_lowres;
1128 static void avcodec_get_subtitle_defaults(AVSubtitle *sub)
1130 memset(sub, 0, sizeof(*sub));
1131 sub->pts = AV_NOPTS_VALUE;
1134 static int get_bit_rate(AVCodecContext *ctx)
1137 int bits_per_sample;
1139 switch (ctx->codec_type) {
1140 case AVMEDIA_TYPE_VIDEO:
1141 case AVMEDIA_TYPE_DATA:
1142 case AVMEDIA_TYPE_SUBTITLE:
1143 case AVMEDIA_TYPE_ATTACHMENT:
1144 bit_rate = ctx->bit_rate;
1146 case AVMEDIA_TYPE_AUDIO:
1147 bits_per_sample = av_get_bits_per_sample(ctx->codec_id);
1148 bit_rate = bits_per_sample ? ctx->sample_rate * ctx->channels * bits_per_sample : ctx->bit_rate;
1157 int attribute_align_arg ff_codec_open2_recursive(AVCodecContext *avctx, const AVCodec *codec, AVDictionary **options)
1161 ff_unlock_avcodec();
1163 ret = avcodec_open2(avctx, codec, options);
1165 ff_lock_avcodec(avctx);
1169 int attribute_align_arg avcodec_open2(AVCodecContext *avctx, const AVCodec *codec, AVDictionary **options)
1172 AVDictionary *tmp = NULL;
1174 if (avcodec_is_open(avctx))
1177 if ((!codec && !avctx->codec)) {
1178 av_log(avctx, AV_LOG_ERROR, "No codec provided to avcodec_open2()\n");
1179 return AVERROR(EINVAL);
1181 if ((codec && avctx->codec && codec != avctx->codec)) {
1182 av_log(avctx, AV_LOG_ERROR, "This AVCodecContext was allocated for %s, "
1183 "but %s passed to avcodec_open2()\n", avctx->codec->name, codec->name);
1184 return AVERROR(EINVAL);
1187 codec = avctx->codec;
1189 if (avctx->extradata_size < 0 || avctx->extradata_size >= FF_MAX_EXTRADATA_SIZE)
1190 return AVERROR(EINVAL);
1193 av_dict_copy(&tmp, *options, 0);
1195 ret = ff_lock_avcodec(avctx);
1199 avctx->internal = av_mallocz(sizeof(AVCodecInternal));
1200 if (!avctx->internal) {
1201 ret = AVERROR(ENOMEM);
1205 avctx->internal->pool = av_mallocz(sizeof(*avctx->internal->pool));
1206 if (!avctx->internal->pool) {
1207 ret = AVERROR(ENOMEM);
1211 avctx->internal->to_free = av_frame_alloc();
1212 if (!avctx->internal->to_free) {
1213 ret = AVERROR(ENOMEM);
1217 if (codec->priv_data_size > 0) {
1218 if (!avctx->priv_data) {
1219 avctx->priv_data = av_mallocz(codec->priv_data_size);
1220 if (!avctx->priv_data) {
1221 ret = AVERROR(ENOMEM);
1224 if (codec->priv_class) {
1225 *(const AVClass **)avctx->priv_data = codec->priv_class;
1226 av_opt_set_defaults(avctx->priv_data);
1229 if (codec->priv_class && (ret = av_opt_set_dict(avctx->priv_data, &tmp)) < 0)
1232 avctx->priv_data = NULL;
1234 if ((ret = av_opt_set_dict(avctx, &tmp)) < 0)
1237 // only call ff_set_dimensions() for non H.264/VP6F codecs so as not to overwrite previously setup dimensions
1238 if (!(avctx->coded_width && avctx->coded_height && avctx->width && avctx->height &&
1239 (avctx->codec_id == AV_CODEC_ID_H264 || avctx->codec_id == AV_CODEC_ID_VP6F))) {
1240 if (avctx->coded_width && avctx->coded_height)
1241 ret = ff_set_dimensions(avctx, avctx->coded_width, avctx->coded_height);
1242 else if (avctx->width && avctx->height)
1243 ret = ff_set_dimensions(avctx, avctx->width, avctx->height);
1248 if ((avctx->coded_width || avctx->coded_height || avctx->width || avctx->height)
1249 && ( av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx) < 0
1250 || av_image_check_size(avctx->width, avctx->height, 0, avctx) < 0)) {
1251 av_log(avctx, AV_LOG_WARNING, "Ignoring invalid width/height values\n");
1252 ff_set_dimensions(avctx, 0, 0);
1255 /* if the decoder init function was already called previously,
1256 * free the already allocated subtitle_header before overwriting it */
1257 if (av_codec_is_decoder(codec))
1258 av_freep(&avctx->subtitle_header);
1260 if (avctx->channels > FF_SANE_NB_CHANNELS) {
1261 ret = AVERROR(EINVAL);
1265 avctx->codec = codec;
1266 if ((avctx->codec_type == AVMEDIA_TYPE_UNKNOWN || avctx->codec_type == codec->type) &&
1267 avctx->codec_id == AV_CODEC_ID_NONE) {
1268 avctx->codec_type = codec->type;
1269 avctx->codec_id = codec->id;
1271 if (avctx->codec_id != codec->id || (avctx->codec_type != codec->type
1272 && avctx->codec_type != AVMEDIA_TYPE_ATTACHMENT)) {
1273 av_log(avctx, AV_LOG_ERROR, "Codec type or id mismatches\n");
1274 ret = AVERROR(EINVAL);
1277 avctx->frame_number = 0;
1278 avctx->codec_descriptor = avcodec_descriptor_get(avctx->codec_id);
1280 if (avctx->codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
1281 avctx->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
1282 const char *codec_string = av_codec_is_encoder(codec) ? "encoder" : "decoder";
1284 av_log(avctx, AV_LOG_ERROR,
1285 "The %s '%s' is experimental but experimental codecs are not enabled, "
1286 "add '-strict %d' if you want to use it.\n",
1287 codec_string, codec->name, FF_COMPLIANCE_EXPERIMENTAL);
1288 codec2 = av_codec_is_encoder(codec) ? avcodec_find_encoder(codec->id) : avcodec_find_decoder(codec->id);
1289 if (!(codec2->capabilities & CODEC_CAP_EXPERIMENTAL))
1290 av_log(avctx, AV_LOG_ERROR, "Alternatively use the non experimental %s '%s'.\n",
1291 codec_string, codec2->name);
1292 ret = AVERROR_EXPERIMENTAL;
1296 if (avctx->codec_type == AVMEDIA_TYPE_AUDIO &&
1297 (!avctx->time_base.num || !avctx->time_base.den)) {
1298 avctx->time_base.num = 1;
1299 avctx->time_base.den = avctx->sample_rate;
1303 av_log(avctx, AV_LOG_WARNING, "Warning: not compiled with thread support, using thread emulation\n");
1305 if (CONFIG_FRAME_THREAD_ENCODER) {
1306 ff_unlock_avcodec(); //we will instanciate a few encoders thus kick the counter to prevent false detection of a problem
1307 ret = ff_frame_thread_encoder_init(avctx, options ? *options : NULL);
1308 ff_lock_avcodec(avctx);
1314 && !(avctx->internal->frame_thread_encoder && (avctx->active_thread_type&FF_THREAD_FRAME))) {
1315 ret = ff_thread_init(avctx);
1320 if (!HAVE_THREADS && !(codec->capabilities & CODEC_CAP_AUTO_THREADS))
1321 avctx->thread_count = 1;
1323 if (avctx->codec->max_lowres < avctx->lowres || avctx->lowres < 0) {
1324 av_log(avctx, AV_LOG_ERROR, "The maximum value for lowres supported by the decoder is %d\n",
1325 avctx->codec->max_lowres);
1326 ret = AVERROR(EINVAL);
1330 if (av_codec_is_encoder(avctx->codec)) {
1332 if (avctx->codec->sample_fmts) {
1333 for (i = 0; avctx->codec->sample_fmts[i] != AV_SAMPLE_FMT_NONE; i++) {
1334 if (avctx->sample_fmt == avctx->codec->sample_fmts[i])
1336 if (avctx->channels == 1 &&
1337 av_get_planar_sample_fmt(avctx->sample_fmt) ==
1338 av_get_planar_sample_fmt(avctx->codec->sample_fmts[i])) {
1339 avctx->sample_fmt = avctx->codec->sample_fmts[i];
1343 if (avctx->codec->sample_fmts[i] == AV_SAMPLE_FMT_NONE) {
1345 snprintf(buf, sizeof(buf), "%d", avctx->sample_fmt);
1346 av_log(avctx, AV_LOG_ERROR, "Specified sample format %s is invalid or not supported\n",
1347 (char *)av_x_if_null(av_get_sample_fmt_name(avctx->sample_fmt), buf));
1348 ret = AVERROR(EINVAL);
1352 if (avctx->codec->pix_fmts) {
1353 for (i = 0; avctx->codec->pix_fmts[i] != AV_PIX_FMT_NONE; i++)
1354 if (avctx->pix_fmt == avctx->codec->pix_fmts[i])
1356 if (avctx->codec->pix_fmts[i] == AV_PIX_FMT_NONE
1357 && !((avctx->codec_id == AV_CODEC_ID_MJPEG || avctx->codec_id == AV_CODEC_ID_LJPEG)
1358 && avctx->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL)) {
1360 snprintf(buf, sizeof(buf), "%d", avctx->pix_fmt);
1361 av_log(avctx, AV_LOG_ERROR, "Specified pixel format %s is invalid or not supported\n",
1362 (char *)av_x_if_null(av_get_pix_fmt_name(avctx->pix_fmt), buf));
1363 ret = AVERROR(EINVAL);
1367 if (avctx->codec->supported_samplerates) {
1368 for (i = 0; avctx->codec->supported_samplerates[i] != 0; i++)
1369 if (avctx->sample_rate == avctx->codec->supported_samplerates[i])
1371 if (avctx->codec->supported_samplerates[i] == 0) {
1372 av_log(avctx, AV_LOG_ERROR, "Specified sample rate %d is not supported\n",
1373 avctx->sample_rate);
1374 ret = AVERROR(EINVAL);
1378 if (avctx->codec->channel_layouts) {
1379 if (!avctx->channel_layout) {
1380 av_log(avctx, AV_LOG_WARNING, "Channel layout not specified\n");
1382 for (i = 0; avctx->codec->channel_layouts[i] != 0; i++)
1383 if (avctx->channel_layout == avctx->codec->channel_layouts[i])
1385 if (avctx->codec->channel_layouts[i] == 0) {
1387 av_get_channel_layout_string(buf, sizeof(buf), -1, avctx->channel_layout);
1388 av_log(avctx, AV_LOG_ERROR, "Specified channel layout '%s' is not supported\n", buf);
1389 ret = AVERROR(EINVAL);
1394 if (avctx->channel_layout && avctx->channels) {
1395 int channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
1396 if (channels != avctx->channels) {
1398 av_get_channel_layout_string(buf, sizeof(buf), -1, avctx->channel_layout);
1399 av_log(avctx, AV_LOG_ERROR,
1400 "Channel layout '%s' with %d channels does not match number of specified channels %d\n",
1401 buf, channels, avctx->channels);
1402 ret = AVERROR(EINVAL);
1405 } else if (avctx->channel_layout) {
1406 avctx->channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
1408 if(avctx->codec_type == AVMEDIA_TYPE_VIDEO &&
1409 avctx->codec_id != AV_CODEC_ID_PNG // For mplayer
1411 if (avctx->width <= 0 || avctx->height <= 0) {
1412 av_log(avctx, AV_LOG_ERROR, "dimensions not set\n");
1413 ret = AVERROR(EINVAL);
1417 if ( (avctx->codec_type == AVMEDIA_TYPE_VIDEO || avctx->codec_type == AVMEDIA_TYPE_AUDIO)
1418 && avctx->bit_rate>0 && avctx->bit_rate<1000) {
1419 av_log(avctx, AV_LOG_WARNING, "Bitrate %d is extremely low, maybe you mean %dk\n", avctx->bit_rate, avctx->bit_rate);
1422 if (!avctx->rc_initial_buffer_occupancy)
1423 avctx->rc_initial_buffer_occupancy = avctx->rc_buffer_size * 3 / 4;
1426 avctx->pts_correction_num_faulty_pts =
1427 avctx->pts_correction_num_faulty_dts = 0;
1428 avctx->pts_correction_last_pts =
1429 avctx->pts_correction_last_dts = INT64_MIN;
1431 if ( avctx->codec->init && (!(avctx->active_thread_type&FF_THREAD_FRAME)
1432 || avctx->internal->frame_thread_encoder)) {
1433 ret = avctx->codec->init(avctx);
1441 if (av_codec_is_decoder(avctx->codec)) {
1442 if (!avctx->bit_rate)
1443 avctx->bit_rate = get_bit_rate(avctx);
1444 /* validate channel layout from the decoder */
1445 if (avctx->channel_layout) {
1446 int channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
1447 if (!avctx->channels)
1448 avctx->channels = channels;
1449 else if (channels != avctx->channels) {
1451 av_get_channel_layout_string(buf, sizeof(buf), -1, avctx->channel_layout);
1452 av_log(avctx, AV_LOG_WARNING,
1453 "Channel layout '%s' with %d channels does not match specified number of channels %d: "
1454 "ignoring specified channel layout\n",
1455 buf, channels, avctx->channels);
1456 avctx->channel_layout = 0;
1459 if (avctx->channels && avctx->channels < 0 ||
1460 avctx->channels > FF_SANE_NB_CHANNELS) {
1461 ret = AVERROR(EINVAL);
1464 if (avctx->sub_charenc) {
1465 if (avctx->codec_type != AVMEDIA_TYPE_SUBTITLE) {
1466 av_log(avctx, AV_LOG_ERROR, "Character encoding is only "
1467 "supported with subtitles codecs\n");
1468 ret = AVERROR(EINVAL);
1470 } else if (avctx->codec_descriptor->props & AV_CODEC_PROP_BITMAP_SUB) {
1471 av_log(avctx, AV_LOG_WARNING, "Codec '%s' is bitmap-based, "
1472 "subtitles character encoding will be ignored\n",
1473 avctx->codec_descriptor->name);
1474 avctx->sub_charenc_mode = FF_SUB_CHARENC_MODE_DO_NOTHING;
1476 /* input character encoding is set for a text based subtitle
1477 * codec at this point */
1478 if (avctx->sub_charenc_mode == FF_SUB_CHARENC_MODE_AUTOMATIC)
1479 avctx->sub_charenc_mode = FF_SUB_CHARENC_MODE_PRE_DECODER;
1481 if (avctx->sub_charenc_mode == FF_SUB_CHARENC_MODE_PRE_DECODER) {
1483 iconv_t cd = iconv_open("UTF-8", avctx->sub_charenc);
1484 if (cd == (iconv_t)-1) {
1485 av_log(avctx, AV_LOG_ERROR, "Unable to open iconv context "
1486 "with input character encoding \"%s\"\n", avctx->sub_charenc);
1487 ret = AVERROR(errno);
1492 av_log(avctx, AV_LOG_ERROR, "Character encoding subtitles "
1493 "conversion needs a libavcodec built with iconv support "
1494 "for this codec\n");
1495 ret = AVERROR(ENOSYS);
1503 ff_unlock_avcodec();
1505 av_dict_free(options);
1512 av_freep(&avctx->priv_data);
1513 if (avctx->internal) {
1514 av_frame_free(&avctx->internal->to_free);
1515 av_freep(&avctx->internal->pool);
1517 av_freep(&avctx->internal);
1518 avctx->codec = NULL;
1522 int ff_alloc_packet2(AVCodecContext *avctx, AVPacket *avpkt, int64_t size)
1524 if (avpkt->size < 0) {
1525 av_log(avctx, AV_LOG_ERROR, "Invalid negative user packet size %d\n", avpkt->size);
1526 return AVERROR(EINVAL);
1528 if (size < 0 || size > INT_MAX - FF_INPUT_BUFFER_PADDING_SIZE) {
1529 av_log(avctx, AV_LOG_ERROR, "Invalid minimum required packet size %"PRId64" (max allowed is %d)\n",
1530 size, INT_MAX - FF_INPUT_BUFFER_PADDING_SIZE);
1531 return AVERROR(EINVAL);
1535 av_assert0(!avpkt->data || avpkt->data != avctx->internal->byte_buffer);
1536 if (!avpkt->data || avpkt->size < size) {
1537 av_fast_padded_malloc(&avctx->internal->byte_buffer, &avctx->internal->byte_buffer_size, size);
1538 avpkt->data = avctx->internal->byte_buffer;
1539 avpkt->size = avctx->internal->byte_buffer_size;
1540 avpkt->destruct = NULL;
1545 AVBufferRef *buf = avpkt->buf;
1546 #if FF_API_DESTRUCT_PACKET
1547 FF_DISABLE_DEPRECATION_WARNINGS
1548 void *destruct = avpkt->destruct;
1549 FF_ENABLE_DEPRECATION_WARNINGS
1552 if (avpkt->size < size) {
1553 av_log(avctx, AV_LOG_ERROR, "User packet is too small (%d < %"PRId64")\n", avpkt->size, size);
1554 return AVERROR(EINVAL);
1557 av_init_packet(avpkt);
1558 #if FF_API_DESTRUCT_PACKET
1559 FF_DISABLE_DEPRECATION_WARNINGS
1560 avpkt->destruct = destruct;
1561 FF_ENABLE_DEPRECATION_WARNINGS
1567 int ret = av_new_packet(avpkt, size);
1569 av_log(avctx, AV_LOG_ERROR, "Failed to allocate packet of size %"PRId64"\n", size);
1574 int ff_alloc_packet(AVPacket *avpkt, int size)
1576 return ff_alloc_packet2(NULL, avpkt, size);
1580 * Pad last frame with silence.
1582 static int pad_last_frame(AVCodecContext *s, AVFrame **dst, const AVFrame *src)
1584 AVFrame *frame = NULL;
1587 if (!(frame = av_frame_alloc()))
1588 return AVERROR(ENOMEM);
1590 frame->format = src->format;
1591 frame->channel_layout = src->channel_layout;
1592 av_frame_set_channels(frame, av_frame_get_channels(src));
1593 frame->nb_samples = s->frame_size;
1594 ret = av_frame_get_buffer(frame, 32);
1598 ret = av_frame_copy_props(frame, src);
1602 if ((ret = av_samples_copy(frame->extended_data, src->extended_data, 0, 0,
1603 src->nb_samples, s->channels, s->sample_fmt)) < 0)
1605 if ((ret = av_samples_set_silence(frame->extended_data, src->nb_samples,
1606 frame->nb_samples - src->nb_samples,
1607 s->channels, s->sample_fmt)) < 0)
1615 av_frame_free(&frame);
1619 int attribute_align_arg avcodec_encode_audio2(AVCodecContext *avctx,
1621 const AVFrame *frame,
1622 int *got_packet_ptr)
1625 AVFrame *padded_frame = NULL;
1627 AVPacket user_pkt = *avpkt;
1628 int needs_realloc = !user_pkt.data;
1630 *got_packet_ptr = 0;
1632 if (!(avctx->codec->capabilities & CODEC_CAP_DELAY) && !frame) {
1633 av_free_packet(avpkt);
1634 av_init_packet(avpkt);
1638 /* ensure that extended_data is properly set */
1639 if (frame && !frame->extended_data) {
1640 if (av_sample_fmt_is_planar(avctx->sample_fmt) &&
1641 avctx->channels > AV_NUM_DATA_POINTERS) {
1642 av_log(avctx, AV_LOG_ERROR, "Encoding to a planar sample format, "
1643 "with more than %d channels, but extended_data is not set.\n",
1644 AV_NUM_DATA_POINTERS);
1645 return AVERROR(EINVAL);
1647 av_log(avctx, AV_LOG_WARNING, "extended_data is not set.\n");
1650 tmp.extended_data = tmp.data;
1654 /* check for valid frame size */
1656 if (avctx->codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME) {
1657 if (frame->nb_samples > avctx->frame_size) {
1658 av_log(avctx, AV_LOG_ERROR, "more samples than frame size (avcodec_encode_audio2)\n");
1659 return AVERROR(EINVAL);
1661 } else if (!(avctx->codec->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE)) {
1662 if (frame->nb_samples < avctx->frame_size &&
1663 !avctx->internal->last_audio_frame) {
1664 ret = pad_last_frame(avctx, &padded_frame, frame);
1668 frame = padded_frame;
1669 avctx->internal->last_audio_frame = 1;
1672 if (frame->nb_samples != avctx->frame_size) {
1673 av_log(avctx, AV_LOG_ERROR, "nb_samples (%d) != frame_size (%d) (avcodec_encode_audio2)\n", frame->nb_samples, avctx->frame_size);
1674 ret = AVERROR(EINVAL);
1680 ret = avctx->codec->encode2(avctx, avpkt, frame, got_packet_ptr);
1682 if (*got_packet_ptr) {
1683 if (!(avctx->codec->capabilities & CODEC_CAP_DELAY)) {
1684 if (avpkt->pts == AV_NOPTS_VALUE)
1685 avpkt->pts = frame->pts;
1686 if (!avpkt->duration)
1687 avpkt->duration = ff_samples_to_time_base(avctx,
1690 avpkt->dts = avpkt->pts;
1695 if (avpkt->data && avpkt->data == avctx->internal->byte_buffer) {
1697 if (user_pkt.data) {
1698 if (user_pkt.size >= avpkt->size) {
1699 memcpy(user_pkt.data, avpkt->data, avpkt->size);
1701 av_log(avctx, AV_LOG_ERROR, "Provided packet is too small, needs to be %d\n", avpkt->size);
1702 avpkt->size = user_pkt.size;
1705 avpkt->buf = user_pkt.buf;
1706 avpkt->data = user_pkt.data;
1707 avpkt->destruct = user_pkt.destruct;
1709 if (av_dup_packet(avpkt) < 0) {
1710 ret = AVERROR(ENOMEM);
1716 if (needs_realloc && avpkt->data) {
1717 ret = av_buffer_realloc(&avpkt->buf, avpkt->size + FF_INPUT_BUFFER_PADDING_SIZE);
1719 avpkt->data = avpkt->buf->data;
1722 avctx->frame_number++;
1725 if (ret < 0 || !*got_packet_ptr) {
1726 av_free_packet(avpkt);
1727 av_init_packet(avpkt);
1731 /* NOTE: if we add any audio encoders which output non-keyframe packets,
1732 * this needs to be moved to the encoders, but for now we can do it
1733 * here to simplify things */
1734 avpkt->flags |= AV_PKT_FLAG_KEY;
1737 av_frame_free(&padded_frame);
1742 #if FF_API_OLD_ENCODE_AUDIO
1743 int attribute_align_arg avcodec_encode_audio(AVCodecContext *avctx,
1744 uint8_t *buf, int buf_size,
1745 const short *samples)
1749 int ret, samples_size, got_packet;
1751 av_init_packet(&pkt);
1753 pkt.size = buf_size;
1756 frame = av_frame_alloc();
1758 return AVERROR(ENOMEM);
1760 if (avctx->frame_size) {
1761 frame->nb_samples = avctx->frame_size;
1763 /* if frame_size is not set, the number of samples must be
1764 * calculated from the buffer size */
1766 if (!av_get_bits_per_sample(avctx->codec_id)) {
1767 av_log(avctx, AV_LOG_ERROR, "avcodec_encode_audio() does not "
1768 "support this codec\n");
1769 av_frame_free(&frame);
1770 return AVERROR(EINVAL);
1772 nb_samples = (int64_t)buf_size * 8 /
1773 (av_get_bits_per_sample(avctx->codec_id) *
1775 if (nb_samples >= INT_MAX) {
1776 av_frame_free(&frame);
1777 return AVERROR(EINVAL);
1779 frame->nb_samples = nb_samples;
1782 /* it is assumed that the samples buffer is large enough based on the
1783 * relevant parameters */
1784 samples_size = av_samples_get_buffer_size(NULL, avctx->channels,
1786 avctx->sample_fmt, 1);
1787 if ((ret = avcodec_fill_audio_frame(frame, avctx->channels,
1789 (const uint8_t *)samples,
1790 samples_size, 1)) < 0) {
1791 av_frame_free(&frame);
1795 /* fabricate frame pts from sample count.
1796 * this is needed because the avcodec_encode_audio() API does not have
1797 * a way for the user to provide pts */
1798 if (avctx->sample_rate && avctx->time_base.num)
1799 frame->pts = ff_samples_to_time_base(avctx,
1800 avctx->internal->sample_count);
1802 frame->pts = AV_NOPTS_VALUE;
1803 avctx->internal->sample_count += frame->nb_samples;
1809 ret = avcodec_encode_audio2(avctx, &pkt, frame, &got_packet);
1810 if (!ret && got_packet && avctx->coded_frame) {
1811 avctx->coded_frame->pts = pkt.pts;
1812 avctx->coded_frame->key_frame = !!(pkt.flags & AV_PKT_FLAG_KEY);
1814 /* free any side data since we cannot return it */
1815 av_packet_free_side_data(&pkt);
1817 if (frame && frame->extended_data != frame->data)
1818 av_freep(&frame->extended_data);
1820 av_frame_free(&frame);
1821 return ret ? ret : pkt.size;
1826 #if FF_API_OLD_ENCODE_VIDEO
1827 int attribute_align_arg avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
1828 const AVFrame *pict)
1831 int ret, got_packet = 0;
1833 if (buf_size < FF_MIN_BUFFER_SIZE) {
1834 av_log(avctx, AV_LOG_ERROR, "buffer smaller than minimum size\n");
1838 av_init_packet(&pkt);
1840 pkt.size = buf_size;
1842 ret = avcodec_encode_video2(avctx, &pkt, pict, &got_packet);
1843 if (!ret && got_packet && avctx->coded_frame) {
1844 avctx->coded_frame->pts = pkt.pts;
1845 avctx->coded_frame->key_frame = !!(pkt.flags & AV_PKT_FLAG_KEY);
1848 /* free any side data since we cannot return it */
1849 if (pkt.side_data_elems > 0) {
1851 for (i = 0; i < pkt.side_data_elems; i++)
1852 av_free(pkt.side_data[i].data);
1853 av_freep(&pkt.side_data);
1854 pkt.side_data_elems = 0;
1857 return ret ? ret : pkt.size;
1862 int attribute_align_arg avcodec_encode_video2(AVCodecContext *avctx,
1864 const AVFrame *frame,
1865 int *got_packet_ptr)
1868 AVPacket user_pkt = *avpkt;
1869 int needs_realloc = !user_pkt.data;
1871 *got_packet_ptr = 0;
1873 if(CONFIG_FRAME_THREAD_ENCODER &&
1874 avctx->internal->frame_thread_encoder && (avctx->active_thread_type&FF_THREAD_FRAME))
1875 return ff_thread_video_encode_frame(avctx, avpkt, frame, got_packet_ptr);
1877 if ((avctx->flags&CODEC_FLAG_PASS1) && avctx->stats_out)
1878 avctx->stats_out[0] = '\0';
1880 if (!(avctx->codec->capabilities & CODEC_CAP_DELAY) && !frame) {
1881 av_free_packet(avpkt);
1882 av_init_packet(avpkt);
1887 if (av_image_check_size(avctx->width, avctx->height, 0, avctx))
1888 return AVERROR(EINVAL);
1890 av_assert0(avctx->codec->encode2);
1892 ret = avctx->codec->encode2(avctx, avpkt, frame, got_packet_ptr);
1893 av_assert0(ret <= 0);
1895 if (avpkt->data && avpkt->data == avctx->internal->byte_buffer) {
1897 if (user_pkt.data) {
1898 if (user_pkt.size >= avpkt->size) {
1899 memcpy(user_pkt.data, avpkt->data, avpkt->size);
1901 av_log(avctx, AV_LOG_ERROR, "Provided packet is too small, needs to be %d\n", avpkt->size);
1902 avpkt->size = user_pkt.size;
1905 avpkt->buf = user_pkt.buf;
1906 avpkt->data = user_pkt.data;
1907 avpkt->destruct = user_pkt.destruct;
1909 if (av_dup_packet(avpkt) < 0) {
1910 ret = AVERROR(ENOMEM);
1916 if (!*got_packet_ptr)
1918 else if (!(avctx->codec->capabilities & CODEC_CAP_DELAY))
1919 avpkt->pts = avpkt->dts = frame->pts;
1921 if (needs_realloc && avpkt->data) {
1922 ret = av_buffer_realloc(&avpkt->buf, avpkt->size + FF_INPUT_BUFFER_PADDING_SIZE);
1924 avpkt->data = avpkt->buf->data;
1927 avctx->frame_number++;
1930 if (ret < 0 || !*got_packet_ptr)
1931 av_free_packet(avpkt);
1933 av_packet_merge_side_data(avpkt);
1939 int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size,
1940 const AVSubtitle *sub)
1943 if (sub->start_display_time) {
1944 av_log(avctx, AV_LOG_ERROR, "start_display_time must be 0.\n");
1948 ret = avctx->codec->encode_sub(avctx, buf, buf_size, sub);
1949 avctx->frame_number++;
1954 * Attempt to guess proper monotonic timestamps for decoded video frames
1955 * which might have incorrect times. Input timestamps may wrap around, in
1956 * which case the output will as well.
1958 * @param pts the pts field of the decoded AVPacket, as passed through
1960 * @param dts the dts field of the decoded AVPacket
1961 * @return one of the input values, may be AV_NOPTS_VALUE
1963 static int64_t guess_correct_pts(AVCodecContext *ctx,
1964 int64_t reordered_pts, int64_t dts)
1966 int64_t pts = AV_NOPTS_VALUE;
1968 if (dts != AV_NOPTS_VALUE) {
1969 ctx->pts_correction_num_faulty_dts += dts <= ctx->pts_correction_last_dts;
1970 ctx->pts_correction_last_dts = dts;
1971 } else if (reordered_pts != AV_NOPTS_VALUE)
1972 ctx->pts_correction_last_dts = reordered_pts;
1974 if (reordered_pts != AV_NOPTS_VALUE) {
1975 ctx->pts_correction_num_faulty_pts += reordered_pts <= ctx->pts_correction_last_pts;
1976 ctx->pts_correction_last_pts = reordered_pts;
1977 } else if(dts != AV_NOPTS_VALUE)
1978 ctx->pts_correction_last_pts = dts;
1980 if ((ctx->pts_correction_num_faulty_pts<=ctx->pts_correction_num_faulty_dts || dts == AV_NOPTS_VALUE)
1981 && reordered_pts != AV_NOPTS_VALUE)
1982 pts = reordered_pts;
1989 static int apply_param_change(AVCodecContext *avctx, AVPacket *avpkt)
1992 const uint8_t *data;
1995 data = av_packet_get_side_data(avpkt, AV_PKT_DATA_PARAM_CHANGE, &size);
1999 if (!(avctx->codec->capabilities & CODEC_CAP_PARAM_CHANGE)) {
2000 av_log(avctx, AV_LOG_ERROR, "This decoder does not support parameter "
2001 "changes, but PARAM_CHANGE side data was sent to it.\n");
2002 return AVERROR(EINVAL);
2008 flags = bytestream_get_le32(&data);
2011 if (flags & AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_COUNT) {
2014 avctx->channels = bytestream_get_le32(&data);
2017 if (flags & AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_LAYOUT) {
2020 avctx->channel_layout = bytestream_get_le64(&data);
2023 if (flags & AV_SIDE_DATA_PARAM_CHANGE_SAMPLE_RATE) {
2026 avctx->sample_rate = bytestream_get_le32(&data);
2029 if (flags & AV_SIDE_DATA_PARAM_CHANGE_DIMENSIONS) {
2032 avctx->width = bytestream_get_le32(&data);
2033 avctx->height = bytestream_get_le32(&data);
2035 ret = ff_set_dimensions(avctx, avctx->width, avctx->height);
2042 av_log(avctx, AV_LOG_ERROR, "PARAM_CHANGE side data too small.\n");
2043 return AVERROR_INVALIDDATA;
2046 static int add_metadata_from_side_data(AVCodecContext *avctx, AVFrame *frame)
2049 const uint8_t *side_metadata;
2051 AVDictionary **frame_md = avpriv_frame_get_metadatap(frame);
2053 side_metadata = av_packet_get_side_data(avctx->internal->pkt,
2054 AV_PKT_DATA_STRINGS_METADATA, &size);
2055 return av_packet_unpack_dictionary(side_metadata, size, frame_md);
2058 static int unrefcount_frame(AVCodecInternal *avci, AVFrame *frame)
2062 /* move the original frame to our backup */
2063 av_frame_unref(avci->to_free);
2064 av_frame_move_ref(avci->to_free, frame);
2066 /* now copy everything except the AVBufferRefs back
2067 * note that we make a COPY of the side data, so calling av_frame_free() on
2068 * the caller's frame will work properly */
2069 ret = av_frame_copy_props(frame, avci->to_free);
2073 memcpy(frame->data, avci->to_free->data, sizeof(frame->data));
2074 memcpy(frame->linesize, avci->to_free->linesize, sizeof(frame->linesize));
2075 if (avci->to_free->extended_data != avci->to_free->data) {
2076 int planes = av_frame_get_channels(avci->to_free);
2077 int size = planes * sizeof(*frame->extended_data);
2080 av_frame_unref(frame);
2084 frame->extended_data = av_malloc(size);
2085 if (!frame->extended_data) {
2086 av_frame_unref(frame);
2087 return AVERROR(ENOMEM);
2089 memcpy(frame->extended_data, avci->to_free->extended_data,
2092 frame->extended_data = frame->data;
2094 frame->format = avci->to_free->format;
2095 frame->width = avci->to_free->width;
2096 frame->height = avci->to_free->height;
2097 frame->channel_layout = avci->to_free->channel_layout;
2098 frame->nb_samples = avci->to_free->nb_samples;
2099 av_frame_set_channels(frame, av_frame_get_channels(avci->to_free));
2104 int attribute_align_arg avcodec_decode_video2(AVCodecContext *avctx, AVFrame *picture,
2105 int *got_picture_ptr,
2106 const AVPacket *avpkt)
2108 AVCodecInternal *avci = avctx->internal;
2110 // copy to ensure we do not change avpkt
2111 AVPacket tmp = *avpkt;
2114 return AVERROR(EINVAL);
2115 if (avctx->codec->type != AVMEDIA_TYPE_VIDEO) {
2116 av_log(avctx, AV_LOG_ERROR, "Invalid media type for video\n");
2117 return AVERROR(EINVAL);
2120 *got_picture_ptr = 0;
2121 if ((avctx->coded_width || avctx->coded_height) && av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx))
2122 return AVERROR(EINVAL);
2124 av_frame_unref(picture);
2126 if ((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size || (avctx->active_thread_type & FF_THREAD_FRAME)) {
2127 int did_split = av_packet_split_side_data(&tmp);
2128 ret = apply_param_change(avctx, &tmp);
2130 av_log(avctx, AV_LOG_ERROR, "Error applying parameter changes.\n");
2131 if (avctx->err_recognition & AV_EF_EXPLODE)
2135 avctx->internal->pkt = &tmp;
2136 if (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME)
2137 ret = ff_thread_decode_frame(avctx, picture, got_picture_ptr,
2140 ret = avctx->codec->decode(avctx, picture, got_picture_ptr,
2142 picture->pkt_dts = avpkt->dts;
2144 if(!avctx->has_b_frames){
2145 av_frame_set_pkt_pos(picture, avpkt->pos);
2147 //FIXME these should be under if(!avctx->has_b_frames)
2148 /* get_buffer is supposed to set frame parameters */
2149 if (!(avctx->codec->capabilities & CODEC_CAP_DR1)) {
2150 if (!picture->sample_aspect_ratio.num) picture->sample_aspect_ratio = avctx->sample_aspect_ratio;
2151 if (!picture->width) picture->width = avctx->width;
2152 if (!picture->height) picture->height = avctx->height;
2153 if (picture->format == AV_PIX_FMT_NONE) picture->format = avctx->pix_fmt;
2156 add_metadata_from_side_data(avctx, picture);
2159 emms_c(); //needed to avoid an emms_c() call before every return;
2161 avctx->internal->pkt = NULL;
2163 av_packet_free_side_data(&tmp);
2168 if (*got_picture_ptr) {
2169 if (!avctx->refcounted_frames) {
2170 int err = unrefcount_frame(avci, picture);
2175 avctx->frame_number++;
2176 av_frame_set_best_effort_timestamp(picture,
2177 guess_correct_pts(avctx,
2181 av_frame_unref(picture);
2185 /* many decoders assign whole AVFrames, thus overwriting extended_data;
2186 * make sure it's set correctly */
2187 av_assert0(!picture->extended_data || picture->extended_data == picture->data);
2192 #if FF_API_OLD_DECODE_AUDIO
2193 int attribute_align_arg avcodec_decode_audio3(AVCodecContext *avctx, int16_t *samples,
2194 int *frame_size_ptr,
2197 AVFrame *frame = av_frame_alloc();
2198 int ret, got_frame = 0;
2201 return AVERROR(ENOMEM);
2202 if (avctx->get_buffer != avcodec_default_get_buffer) {
2203 av_log(avctx, AV_LOG_ERROR, "Custom get_buffer() for use with"
2204 "avcodec_decode_audio3() detected. Overriding with avcodec_default_get_buffer\n");
2205 av_log(avctx, AV_LOG_ERROR, "Please port your application to "
2206 "avcodec_decode_audio4()\n");
2207 avctx->get_buffer = avcodec_default_get_buffer;
2208 avctx->release_buffer = avcodec_default_release_buffer;
2211 ret = avcodec_decode_audio4(avctx, frame, &got_frame, avpkt);
2213 if (ret >= 0 && got_frame) {
2215 int planar = av_sample_fmt_is_planar(avctx->sample_fmt);
2216 int data_size = av_samples_get_buffer_size(&plane_size, avctx->channels,
2218 avctx->sample_fmt, 1);
2219 if (*frame_size_ptr < data_size) {
2220 av_log(avctx, AV_LOG_ERROR, "output buffer size is too small for "
2221 "the current frame (%d < %d)\n", *frame_size_ptr, data_size);
2222 av_frame_free(&frame);
2223 return AVERROR(EINVAL);
2226 memcpy(samples, frame->extended_data[0], plane_size);
2228 if (planar && avctx->channels > 1) {
2229 uint8_t *out = ((uint8_t *)samples) + plane_size;
2230 for (ch = 1; ch < avctx->channels; ch++) {
2231 memcpy(out, frame->extended_data[ch], plane_size);
2235 *frame_size_ptr = data_size;
2237 *frame_size_ptr = 0;
2239 av_frame_free(&frame);
2245 int attribute_align_arg avcodec_decode_audio4(AVCodecContext *avctx,
2248 const AVPacket *avpkt)
2250 AVCodecInternal *avci = avctx->internal;
2255 if (!avpkt->data && avpkt->size) {
2256 av_log(avctx, AV_LOG_ERROR, "invalid packet: NULL data, size != 0\n");
2257 return AVERROR(EINVAL);
2260 return AVERROR(EINVAL);
2261 if (avctx->codec->type != AVMEDIA_TYPE_AUDIO) {
2262 av_log(avctx, AV_LOG_ERROR, "Invalid media type for audio\n");
2263 return AVERROR(EINVAL);
2266 av_frame_unref(frame);
2268 if ((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size || (avctx->active_thread_type & FF_THREAD_FRAME)) {
2271 uint32_t discard_padding = 0;
2272 // copy to ensure we do not change avpkt
2273 AVPacket tmp = *avpkt;
2274 int did_split = av_packet_split_side_data(&tmp);
2275 ret = apply_param_change(avctx, &tmp);
2277 av_log(avctx, AV_LOG_ERROR, "Error applying parameter changes.\n");
2278 if (avctx->err_recognition & AV_EF_EXPLODE)
2282 avctx->internal->pkt = &tmp;
2283 if (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME)
2284 ret = ff_thread_decode_frame(avctx, frame, got_frame_ptr, &tmp);
2286 ret = avctx->codec->decode(avctx, frame, got_frame_ptr, &tmp);
2287 frame->pkt_dts = avpkt->dts;
2289 if (ret >= 0 && *got_frame_ptr) {
2290 add_metadata_from_side_data(avctx, frame);
2291 avctx->frame_number++;
2292 av_frame_set_best_effort_timestamp(frame,
2293 guess_correct_pts(avctx,
2296 if (frame->format == AV_SAMPLE_FMT_NONE)
2297 frame->format = avctx->sample_fmt;
2298 if (!frame->channel_layout)
2299 frame->channel_layout = avctx->channel_layout;
2300 if (!av_frame_get_channels(frame))
2301 av_frame_set_channels(frame, avctx->channels);
2302 if (!frame->sample_rate)
2303 frame->sample_rate = avctx->sample_rate;
2306 side= av_packet_get_side_data(avctx->internal->pkt, AV_PKT_DATA_SKIP_SAMPLES, &side_size);
2307 if(side && side_size>=10) {
2308 avctx->internal->skip_samples = AV_RL32(side);
2309 av_log(avctx, AV_LOG_DEBUG, "skip %d samples due to side data\n",
2310 avctx->internal->skip_samples);
2311 discard_padding = AV_RL32(side + 4);
2313 if (avctx->internal->skip_samples && *got_frame_ptr) {
2314 if(frame->nb_samples <= avctx->internal->skip_samples){
2316 avctx->internal->skip_samples -= frame->nb_samples;
2317 av_log(avctx, AV_LOG_DEBUG, "skip whole frame, skip left: %d\n",
2318 avctx->internal->skip_samples);
2320 av_samples_copy(frame->extended_data, frame->extended_data, 0, avctx->internal->skip_samples,
2321 frame->nb_samples - avctx->internal->skip_samples, avctx->channels, frame->format);
2322 if(avctx->pkt_timebase.num && avctx->sample_rate) {
2323 int64_t diff_ts = av_rescale_q(avctx->internal->skip_samples,
2324 (AVRational){1, avctx->sample_rate},
2325 avctx->pkt_timebase);
2326 if(frame->pkt_pts!=AV_NOPTS_VALUE)
2327 frame->pkt_pts += diff_ts;
2328 if(frame->pkt_dts!=AV_NOPTS_VALUE)
2329 frame->pkt_dts += diff_ts;
2330 if (av_frame_get_pkt_duration(frame) >= diff_ts)
2331 av_frame_set_pkt_duration(frame, av_frame_get_pkt_duration(frame) - diff_ts);
2333 av_log(avctx, AV_LOG_WARNING, "Could not update timestamps for skipped samples.\n");
2335 av_log(avctx, AV_LOG_DEBUG, "skip %d/%d samples\n",
2336 avctx->internal->skip_samples, frame->nb_samples);
2337 frame->nb_samples -= avctx->internal->skip_samples;
2338 avctx->internal->skip_samples = 0;
2342 if (discard_padding > 0 && discard_padding <= frame->nb_samples && *got_frame_ptr) {
2343 if (discard_padding == frame->nb_samples) {
2346 if(avctx->pkt_timebase.num && avctx->sample_rate) {
2347 int64_t diff_ts = av_rescale_q(frame->nb_samples - discard_padding,
2348 (AVRational){1, avctx->sample_rate},
2349 avctx->pkt_timebase);
2350 if (av_frame_get_pkt_duration(frame) >= diff_ts)
2351 av_frame_set_pkt_duration(frame, av_frame_get_pkt_duration(frame) - diff_ts);
2353 av_log(avctx, AV_LOG_WARNING, "Could not update timestamps for discarded samples.\n");
2355 av_log(avctx, AV_LOG_DEBUG, "discard %d/%d samples\n",
2356 discard_padding, frame->nb_samples);
2357 frame->nb_samples -= discard_padding;
2361 avctx->internal->pkt = NULL;
2363 av_packet_free_side_data(&tmp);
2368 if (ret >= 0 && *got_frame_ptr) {
2369 if (!avctx->refcounted_frames) {
2370 int err = unrefcount_frame(avci, frame);
2375 av_frame_unref(frame);
2381 #define UTF8_MAX_BYTES 4 /* 5 and 6 bytes sequences should not be used */
2382 static int recode_subtitle(AVCodecContext *avctx,
2383 AVPacket *outpkt, const AVPacket *inpkt)
2386 iconv_t cd = (iconv_t)-1;
2393 if (avctx->sub_charenc_mode != FF_SUB_CHARENC_MODE_PRE_DECODER || inpkt->size == 0)
2397 cd = iconv_open("UTF-8", avctx->sub_charenc);
2398 av_assert0(cd != (iconv_t)-1);
2403 if (inl >= INT_MAX / UTF8_MAX_BYTES - FF_INPUT_BUFFER_PADDING_SIZE) {
2404 av_log(avctx, AV_LOG_ERROR, "Subtitles packet is too big for recoding\n");
2405 ret = AVERROR(ENOMEM);
2409 ret = av_new_packet(&tmp, inl * UTF8_MAX_BYTES);
2412 outpkt->buf = tmp.buf;
2413 outpkt->data = tmp.data;
2414 outpkt->size = tmp.size;
2415 outb = outpkt->data;
2416 outl = outpkt->size;
2418 if (iconv(cd, &inb, &inl, &outb, &outl) == (size_t)-1 ||
2419 iconv(cd, NULL, NULL, &outb, &outl) == (size_t)-1 ||
2420 outl >= outpkt->size || inl != 0) {
2421 av_log(avctx, AV_LOG_ERROR, "Unable to recode subtitle event \"%s\" "
2422 "from %s to UTF-8\n", inpkt->data, avctx->sub_charenc);
2423 av_free_packet(&tmp);
2424 ret = AVERROR(errno);
2427 outpkt->size -= outl;
2428 memset(outpkt->data + outpkt->size, 0, outl);
2431 if (cd != (iconv_t)-1)
2435 av_assert0(!"requesting subtitles recoding without iconv");
2439 static int utf8_check(const uint8_t *str)
2441 const uint8_t *byte;
2442 uint32_t codepoint, min;
2446 GET_UTF8(codepoint, *(byte++), return 0;);
2447 min = byte - str == 1 ? 0 : byte - str == 2 ? 0x80 :
2448 1 << (5 * (byte - str) - 4);
2449 if (codepoint < min || codepoint >= 0x110000 ||
2450 codepoint == 0xFFFE /* BOM */ ||
2451 codepoint >= 0xD800 && codepoint <= 0xDFFF /* surrogates */)
2458 int avcodec_decode_subtitle2(AVCodecContext *avctx, AVSubtitle *sub,
2464 if (!avpkt->data && avpkt->size) {
2465 av_log(avctx, AV_LOG_ERROR, "invalid packet: NULL data, size != 0\n");
2466 return AVERROR(EINVAL);
2469 return AVERROR(EINVAL);
2470 if (avctx->codec->type != AVMEDIA_TYPE_SUBTITLE) {
2471 av_log(avctx, AV_LOG_ERROR, "Invalid media type for subtitles\n");
2472 return AVERROR(EINVAL);
2476 avcodec_get_subtitle_defaults(sub);
2478 if ((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size) {
2479 AVPacket pkt_recoded;
2480 AVPacket tmp = *avpkt;
2481 int did_split = av_packet_split_side_data(&tmp);
2482 //apply_param_change(avctx, &tmp);
2485 /* FFMIN() prevents overflow in case the packet wasn't allocated with
2487 * If the side data is smaller than the buffer padding size, the
2488 * remaining bytes should have already been filled with zeros by the
2489 * original packet allocation anyway. */
2490 memset(tmp.data + tmp.size, 0,
2491 FFMIN(avpkt->size - tmp.size, FF_INPUT_BUFFER_PADDING_SIZE));
2495 ret = recode_subtitle(avctx, &pkt_recoded, &tmp);
2499 avctx->internal->pkt = &pkt_recoded;
2501 if (avctx->pkt_timebase.den && avpkt->pts != AV_NOPTS_VALUE)
2502 sub->pts = av_rescale_q(avpkt->pts,
2503 avctx->pkt_timebase, AV_TIME_BASE_Q);
2504 ret = avctx->codec->decode(avctx, sub, got_sub_ptr, &pkt_recoded);
2505 av_assert1((ret >= 0) >= !!*got_sub_ptr &&
2506 !!*got_sub_ptr >= !!sub->num_rects);
2508 if (sub->num_rects && !sub->end_display_time && avpkt->duration &&
2509 avctx->pkt_timebase.num) {
2510 AVRational ms = { 1, 1000 };
2511 sub->end_display_time = av_rescale_q(avpkt->duration,
2512 avctx->pkt_timebase, ms);
2515 for (i = 0; i < sub->num_rects; i++) {
2516 if (sub->rects[i]->ass && !utf8_check(sub->rects[i]->ass)) {
2517 av_log(avctx, AV_LOG_ERROR,
2518 "Invalid UTF-8 in decoded subtitles text; "
2519 "maybe missing -sub_charenc option\n");
2520 avsubtitle_free(sub);
2521 return AVERROR_INVALIDDATA;
2525 if (tmp.data != pkt_recoded.data) { // did we recode?
2526 /* prevent from destroying side data from original packet */
2527 pkt_recoded.side_data = NULL;
2528 pkt_recoded.side_data_elems = 0;
2530 av_free_packet(&pkt_recoded);
2532 if (avctx->codec_descriptor->props & AV_CODEC_PROP_BITMAP_SUB)
2534 else if (avctx->codec_descriptor->props & AV_CODEC_PROP_TEXT_SUB)
2536 avctx->internal->pkt = NULL;
2540 av_packet_free_side_data(&tmp);
2546 avctx->frame_number++;
2552 void avsubtitle_free(AVSubtitle *sub)
2556 for (i = 0; i < sub->num_rects; i++) {
2557 av_freep(&sub->rects[i]->pict.data[0]);
2558 av_freep(&sub->rects[i]->pict.data[1]);
2559 av_freep(&sub->rects[i]->pict.data[2]);
2560 av_freep(&sub->rects[i]->pict.data[3]);
2561 av_freep(&sub->rects[i]->text);
2562 av_freep(&sub->rects[i]->ass);
2563 av_freep(&sub->rects[i]);
2566 av_freep(&sub->rects);
2568 memset(sub, 0, sizeof(AVSubtitle));
2571 av_cold int ff_codec_close_recursive(AVCodecContext *avctx)
2575 ff_unlock_avcodec();
2577 ret = avcodec_close(avctx);
2579 ff_lock_avcodec(NULL);
2583 av_cold int avcodec_close(AVCodecContext *avctx)
2590 ret = ff_lock_avcodec(avctx);
2594 if (avcodec_is_open(avctx)) {
2595 FramePool *pool = avctx->internal->pool;
2597 if (CONFIG_FRAME_THREAD_ENCODER &&
2598 avctx->internal->frame_thread_encoder && avctx->thread_count > 1) {
2599 ff_unlock_avcodec();
2600 ff_frame_thread_encoder_free(avctx);
2601 ff_lock_avcodec(avctx);
2603 if (HAVE_THREADS && avctx->internal->thread_ctx)
2604 ff_thread_free(avctx);
2605 if (avctx->codec && avctx->codec->close)
2606 avctx->codec->close(avctx);
2607 avctx->coded_frame = NULL;
2608 avctx->internal->byte_buffer_size = 0;
2609 av_freep(&avctx->internal->byte_buffer);
2610 av_frame_free(&avctx->internal->to_free);
2611 for (i = 0; i < FF_ARRAY_ELEMS(pool->pools); i++)
2612 av_buffer_pool_uninit(&pool->pools[i]);
2613 av_freep(&avctx->internal->pool);
2614 av_freep(&avctx->internal);
2617 if (avctx->priv_data && avctx->codec && avctx->codec->priv_class)
2618 av_opt_free(avctx->priv_data);
2620 av_freep(&avctx->priv_data);
2621 if (av_codec_is_encoder(avctx->codec))
2622 av_freep(&avctx->extradata);
2623 avctx->codec = NULL;
2624 avctx->active_thread_type = 0;
2626 ff_unlock_avcodec();
2630 static enum AVCodecID remap_deprecated_codec_id(enum AVCodecID id)
2633 //This is for future deprecatec codec ids, its empty since
2634 //last major bump but will fill up again over time, please don't remove it
2635 // case AV_CODEC_ID_UTVIDEO_DEPRECATED: return AV_CODEC_ID_UTVIDEO;
2636 case AV_CODEC_ID_OPUS_DEPRECATED: return AV_CODEC_ID_OPUS;
2637 case AV_CODEC_ID_TAK_DEPRECATED : return AV_CODEC_ID_TAK;
2638 case AV_CODEC_ID_PCM_S24LE_PLANAR_DEPRECATED : return AV_CODEC_ID_PCM_S24LE_PLANAR;
2639 case AV_CODEC_ID_PCM_S32LE_PLANAR_DEPRECATED : return AV_CODEC_ID_PCM_S32LE_PLANAR;
2640 case AV_CODEC_ID_ESCAPE130_DEPRECATED : return AV_CODEC_ID_ESCAPE130;
2641 case AV_CODEC_ID_G2M_DEPRECATED : return AV_CODEC_ID_G2M;
2642 case AV_CODEC_ID_WEBP_DEPRECATED: return AV_CODEC_ID_WEBP;
2643 case AV_CODEC_ID_HEVC_DEPRECATED: return AV_CODEC_ID_HEVC;
2644 default : return id;
2648 static AVCodec *find_encdec(enum AVCodecID id, int encoder)
2650 AVCodec *p, *experimental = NULL;
2652 id= remap_deprecated_codec_id(id);
2654 if ((encoder ? av_codec_is_encoder(p) : av_codec_is_decoder(p)) &&
2656 if (p->capabilities & CODEC_CAP_EXPERIMENTAL && !experimental) {
2663 return experimental;
2666 AVCodec *avcodec_find_encoder(enum AVCodecID id)
2668 return find_encdec(id, 1);
2671 AVCodec *avcodec_find_encoder_by_name(const char *name)
2678 if (av_codec_is_encoder(p) && strcmp(name, p->name) == 0)
2685 AVCodec *avcodec_find_decoder(enum AVCodecID id)
2687 return find_encdec(id, 0);
2690 AVCodec *avcodec_find_decoder_by_name(const char *name)
2697 if (av_codec_is_decoder(p) && strcmp(name, p->name) == 0)
2704 const char *avcodec_get_name(enum AVCodecID id)
2706 const AVCodecDescriptor *cd;
2709 if (id == AV_CODEC_ID_NONE)
2711 cd = avcodec_descriptor_get(id);
2714 av_log(NULL, AV_LOG_WARNING, "Codec 0x%x is not in the full list.\n", id);
2715 codec = avcodec_find_decoder(id);
2718 codec = avcodec_find_encoder(id);
2721 return "unknown_codec";
2724 size_t av_get_codec_tag_string(char *buf, size_t buf_size, unsigned int codec_tag)
2726 int i, len, ret = 0;
2728 #define TAG_PRINT(x) \
2729 (((x) >= '0' && (x) <= '9') || \
2730 ((x) >= 'a' && (x) <= 'z') || ((x) >= 'A' && (x) <= 'Z') || \
2731 ((x) == '.' || (x) == ' ' || (x) == '-' || (x) == '_'))
2733 for (i = 0; i < 4; i++) {
2734 len = snprintf(buf, buf_size,
2735 TAG_PRINT(codec_tag & 0xFF) ? "%c" : "[%d]", codec_tag & 0xFF);
2737 buf_size = buf_size > len ? buf_size - len : 0;
2744 void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)
2746 const char *codec_type;
2747 const char *codec_name;
2748 const char *profile = NULL;
2751 AVRational display_aspect_ratio;
2753 if (!buf || buf_size <= 0)
2755 codec_type = av_get_media_type_string(enc->codec_type);
2756 codec_name = avcodec_get_name(enc->codec_id);
2757 if (enc->profile != FF_PROFILE_UNKNOWN) {
2761 p = encode ? avcodec_find_encoder(enc->codec_id) :
2762 avcodec_find_decoder(enc->codec_id);
2764 profile = av_get_profile_name(p, enc->profile);
2767 snprintf(buf, buf_size, "%s: %s", codec_type ? codec_type : "unknown",
2769 buf[0] ^= 'a' ^ 'A'; /* first letter in uppercase */
2771 if (enc->codec && strcmp(enc->codec->name, codec_name))
2772 snprintf(buf + strlen(buf), buf_size - strlen(buf), " (%s)", enc->codec->name);
2775 snprintf(buf + strlen(buf), buf_size - strlen(buf), " (%s)", profile);
2776 if (enc->codec_tag) {
2778 av_get_codec_tag_string(tag_buf, sizeof(tag_buf), enc->codec_tag);
2779 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2780 " (%s / 0x%04X)", tag_buf, enc->codec_tag);
2783 switch (enc->codec_type) {
2784 case AVMEDIA_TYPE_VIDEO:
2785 if (enc->pix_fmt != AV_PIX_FMT_NONE) {
2786 char detail[256] = "(";
2787 const char *colorspace_name;
2788 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2790 av_get_pix_fmt_name(enc->pix_fmt));
2791 if (enc->bits_per_raw_sample &&
2792 enc->bits_per_raw_sample <= av_pix_fmt_desc_get(enc->pix_fmt)->comp[0].depth_minus1)
2793 av_strlcatf(detail, sizeof(detail), "%d bpc, ", enc->bits_per_raw_sample);
2794 if (enc->color_range != AVCOL_RANGE_UNSPECIFIED)
2795 av_strlcatf(detail, sizeof(detail),
2796 enc->color_range == AVCOL_RANGE_MPEG ? "tv, ": "pc, ");
2798 colorspace_name = av_get_colorspace_name(enc->colorspace);
2799 if (colorspace_name)
2800 av_strlcatf(detail, sizeof(detail), "%s, ", colorspace_name);
2802 if (strlen(detail) > 1) {
2803 detail[strlen(detail) - 2] = 0;
2804 av_strlcatf(buf, buf_size, "%s)", detail);
2808 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2810 enc->width, enc->height);
2811 if (enc->sample_aspect_ratio.num) {
2812 av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
2813 enc->width * enc->sample_aspect_ratio.num,
2814 enc->height * enc->sample_aspect_ratio.den,
2816 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2817 " [SAR %d:%d DAR %d:%d]",
2818 enc->sample_aspect_ratio.num, enc->sample_aspect_ratio.den,
2819 display_aspect_ratio.num, display_aspect_ratio.den);
2821 if (av_log_get_level() >= AV_LOG_DEBUG) {
2822 int g = av_gcd(enc->time_base.num, enc->time_base.den);
2823 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2825 enc->time_base.num / g, enc->time_base.den / g);
2829 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2830 ", q=%d-%d", enc->qmin, enc->qmax);
2833 case AVMEDIA_TYPE_AUDIO:
2834 if (enc->sample_rate) {
2835 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2836 ", %d Hz", enc->sample_rate);
2838 av_strlcat(buf, ", ", buf_size);
2839 av_get_channel_layout_string(buf + strlen(buf), buf_size - strlen(buf), enc->channels, enc->channel_layout);
2840 if (enc->sample_fmt != AV_SAMPLE_FMT_NONE) {
2841 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2842 ", %s", av_get_sample_fmt_name(enc->sample_fmt));
2845 case AVMEDIA_TYPE_DATA:
2846 if (av_log_get_level() >= AV_LOG_DEBUG) {
2847 int g = av_gcd(enc->time_base.num, enc->time_base.den);
2849 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2851 enc->time_base.num / g, enc->time_base.den / g);
2854 case AVMEDIA_TYPE_SUBTITLE:
2856 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2857 ", %dx%d", enc->width, enc->height);
2863 if (enc->flags & CODEC_FLAG_PASS1)
2864 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2866 if (enc->flags & CODEC_FLAG_PASS2)
2867 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2870 bitrate = get_bit_rate(enc);
2872 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2873 ", %d kb/s", bitrate / 1000);
2874 } else if (enc->rc_max_rate > 0) {
2875 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2876 ", max. %d kb/s", enc->rc_max_rate / 1000);
2880 const char *av_get_profile_name(const AVCodec *codec, int profile)
2883 if (profile == FF_PROFILE_UNKNOWN || !codec->profiles)
2886 for (p = codec->profiles; p->profile != FF_PROFILE_UNKNOWN; p++)
2887 if (p->profile == profile)
2893 unsigned avcodec_version(void)
2895 // av_assert0(AV_CODEC_ID_V410==164);
2896 av_assert0(AV_CODEC_ID_PCM_S8_PLANAR==65563);
2897 av_assert0(AV_CODEC_ID_ADPCM_G722==69660);
2898 // av_assert0(AV_CODEC_ID_BMV_AUDIO==86071);
2899 av_assert0(AV_CODEC_ID_SRT==94216);
2900 av_assert0(LIBAVCODEC_VERSION_MICRO >= 100);
2902 av_assert0(CODEC_ID_CLLC == AV_CODEC_ID_CLLC);
2903 av_assert0(CODEC_ID_PCM_S8_PLANAR == AV_CODEC_ID_PCM_S8_PLANAR);
2904 av_assert0(CODEC_ID_ADPCM_IMA_APC == AV_CODEC_ID_ADPCM_IMA_APC);
2905 av_assert0(CODEC_ID_ILBC == AV_CODEC_ID_ILBC);
2906 av_assert0(CODEC_ID_SRT == AV_CODEC_ID_SRT);
2907 return LIBAVCODEC_VERSION_INT;
2910 const char *avcodec_configuration(void)
2912 return FFMPEG_CONFIGURATION;
2915 const char *avcodec_license(void)
2917 #define LICENSE_PREFIX "libavcodec license: "
2918 return LICENSE_PREFIX FFMPEG_LICENSE + sizeof(LICENSE_PREFIX) - 1;
2921 void avcodec_flush_buffers(AVCodecContext *avctx)
2923 if (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME)
2924 ff_thread_flush(avctx);
2925 else if (avctx->codec->flush)
2926 avctx->codec->flush(avctx);
2928 avctx->pts_correction_last_pts =
2929 avctx->pts_correction_last_dts = INT64_MIN;
2931 if (!avctx->refcounted_frames)
2932 av_frame_unref(avctx->internal->to_free);
2935 int av_get_exact_bits_per_sample(enum AVCodecID codec_id)
2938 case AV_CODEC_ID_8SVX_EXP:
2939 case AV_CODEC_ID_8SVX_FIB:
2940 case AV_CODEC_ID_ADPCM_CT:
2941 case AV_CODEC_ID_ADPCM_IMA_APC:
2942 case AV_CODEC_ID_ADPCM_IMA_EA_SEAD:
2943 case AV_CODEC_ID_ADPCM_IMA_OKI:
2944 case AV_CODEC_ID_ADPCM_IMA_WS:
2945 case AV_CODEC_ID_ADPCM_G722:
2946 case AV_CODEC_ID_ADPCM_YAMAHA:
2948 case AV_CODEC_ID_PCM_ALAW:
2949 case AV_CODEC_ID_PCM_MULAW:
2950 case AV_CODEC_ID_PCM_S8:
2951 case AV_CODEC_ID_PCM_S8_PLANAR:
2952 case AV_CODEC_ID_PCM_U8:
2953 case AV_CODEC_ID_PCM_ZORK:
2955 case AV_CODEC_ID_PCM_S16BE:
2956 case AV_CODEC_ID_PCM_S16BE_PLANAR:
2957 case AV_CODEC_ID_PCM_S16LE:
2958 case AV_CODEC_ID_PCM_S16LE_PLANAR:
2959 case AV_CODEC_ID_PCM_U16BE:
2960 case AV_CODEC_ID_PCM_U16LE:
2962 case AV_CODEC_ID_PCM_S24DAUD:
2963 case AV_CODEC_ID_PCM_S24BE:
2964 case AV_CODEC_ID_PCM_S24LE:
2965 case AV_CODEC_ID_PCM_S24LE_PLANAR:
2966 case AV_CODEC_ID_PCM_U24BE:
2967 case AV_CODEC_ID_PCM_U24LE:
2969 case AV_CODEC_ID_PCM_S32BE:
2970 case AV_CODEC_ID_PCM_S32LE:
2971 case AV_CODEC_ID_PCM_S32LE_PLANAR:
2972 case AV_CODEC_ID_PCM_U32BE:
2973 case AV_CODEC_ID_PCM_U32LE:
2974 case AV_CODEC_ID_PCM_F32BE:
2975 case AV_CODEC_ID_PCM_F32LE:
2977 case AV_CODEC_ID_PCM_F64BE:
2978 case AV_CODEC_ID_PCM_F64LE:
2985 enum AVCodecID av_get_pcm_codec(enum AVSampleFormat fmt, int be)
2987 static const enum AVCodecID map[AV_SAMPLE_FMT_NB][2] = {
2988 [AV_SAMPLE_FMT_U8 ] = { AV_CODEC_ID_PCM_U8, AV_CODEC_ID_PCM_U8 },
2989 [AV_SAMPLE_FMT_S16 ] = { AV_CODEC_ID_PCM_S16LE, AV_CODEC_ID_PCM_S16BE },
2990 [AV_SAMPLE_FMT_S32 ] = { AV_CODEC_ID_PCM_S32LE, AV_CODEC_ID_PCM_S32BE },
2991 [AV_SAMPLE_FMT_FLT ] = { AV_CODEC_ID_PCM_F32LE, AV_CODEC_ID_PCM_F32BE },
2992 [AV_SAMPLE_FMT_DBL ] = { AV_CODEC_ID_PCM_F64LE, AV_CODEC_ID_PCM_F64BE },
2993 [AV_SAMPLE_FMT_U8P ] = { AV_CODEC_ID_PCM_U8, AV_CODEC_ID_PCM_U8 },
2994 [AV_SAMPLE_FMT_S16P] = { AV_CODEC_ID_PCM_S16LE, AV_CODEC_ID_PCM_S16BE },
2995 [AV_SAMPLE_FMT_S32P] = { AV_CODEC_ID_PCM_S32LE, AV_CODEC_ID_PCM_S32BE },
2996 [AV_SAMPLE_FMT_FLTP] = { AV_CODEC_ID_PCM_F32LE, AV_CODEC_ID_PCM_F32BE },
2997 [AV_SAMPLE_FMT_DBLP] = { AV_CODEC_ID_PCM_F64LE, AV_CODEC_ID_PCM_F64BE },
2999 if (fmt < 0 || fmt >= AV_SAMPLE_FMT_NB)
3000 return AV_CODEC_ID_NONE;
3001 if (be < 0 || be > 1)
3003 return map[fmt][be];
3006 int av_get_bits_per_sample(enum AVCodecID codec_id)
3009 case AV_CODEC_ID_ADPCM_SBPRO_2:
3011 case AV_CODEC_ID_ADPCM_SBPRO_3:
3013 case AV_CODEC_ID_ADPCM_SBPRO_4:
3014 case AV_CODEC_ID_ADPCM_IMA_WAV:
3015 case AV_CODEC_ID_ADPCM_IMA_QT:
3016 case AV_CODEC_ID_ADPCM_SWF:
3017 case AV_CODEC_ID_ADPCM_MS:
3020 return av_get_exact_bits_per_sample(codec_id);
3024 int av_get_audio_frame_duration(AVCodecContext *avctx, int frame_bytes)
3026 int id, sr, ch, ba, tag, bps;
3028 id = avctx->codec_id;
3029 sr = avctx->sample_rate;
3030 ch = avctx->channels;
3031 ba = avctx->block_align;
3032 tag = avctx->codec_tag;
3033 bps = av_get_exact_bits_per_sample(avctx->codec_id);
3035 /* codecs with an exact constant bits per sample */
3036 if (bps > 0 && ch > 0 && frame_bytes > 0 && ch < 32768 && bps < 32768)
3037 return (frame_bytes * 8LL) / (bps * ch);
3038 bps = avctx->bits_per_coded_sample;
3040 /* codecs with a fixed packet duration */
3042 case AV_CODEC_ID_ADPCM_ADX: return 32;
3043 case AV_CODEC_ID_ADPCM_IMA_QT: return 64;
3044 case AV_CODEC_ID_ADPCM_EA_XAS: return 128;
3045 case AV_CODEC_ID_AMR_NB:
3046 case AV_CODEC_ID_EVRC:
3047 case AV_CODEC_ID_GSM:
3048 case AV_CODEC_ID_QCELP:
3049 case AV_CODEC_ID_RA_288: return 160;
3050 case AV_CODEC_ID_AMR_WB:
3051 case AV_CODEC_ID_GSM_MS: return 320;
3052 case AV_CODEC_ID_MP1: return 384;
3053 case AV_CODEC_ID_ATRAC1: return 512;
3054 case AV_CODEC_ID_ATRAC3: return 1024;
3055 case AV_CODEC_ID_MP2:
3056 case AV_CODEC_ID_MUSEPACK7: return 1152;
3057 case AV_CODEC_ID_AC3: return 1536;
3061 /* calc from sample rate */
3062 if (id == AV_CODEC_ID_TTA)
3063 return 256 * sr / 245;
3066 /* calc from sample rate and channels */
3067 if (id == AV_CODEC_ID_BINKAUDIO_DCT)
3068 return (480 << (sr / 22050)) / ch;
3073 /* calc from block_align */
3074 if (id == AV_CODEC_ID_SIPR) {
3076 case 20: return 160;
3077 case 19: return 144;
3078 case 29: return 288;
3079 case 37: return 480;
3081 } else if (id == AV_CODEC_ID_ILBC) {
3083 case 38: return 160;
3084 case 50: return 240;
3089 if (frame_bytes > 0) {
3090 /* calc from frame_bytes only */
3091 if (id == AV_CODEC_ID_TRUESPEECH)
3092 return 240 * (frame_bytes / 32);
3093 if (id == AV_CODEC_ID_NELLYMOSER)
3094 return 256 * (frame_bytes / 64);
3095 if (id == AV_CODEC_ID_RA_144)
3096 return 160 * (frame_bytes / 20);
3097 if (id == AV_CODEC_ID_G723_1)
3098 return 240 * (frame_bytes / 24);
3101 /* calc from frame_bytes and bits_per_coded_sample */
3102 if (id == AV_CODEC_ID_ADPCM_G726)
3103 return frame_bytes * 8 / bps;
3107 /* calc from frame_bytes and channels */
3109 case AV_CODEC_ID_ADPCM_AFC:
3110 return frame_bytes / (9 * ch) * 16;
3111 case AV_CODEC_ID_ADPCM_DTK:
3112 return frame_bytes / (16 * ch) * 28;
3113 case AV_CODEC_ID_ADPCM_4XM:
3114 case AV_CODEC_ID_ADPCM_IMA_ISS:
3115 return (frame_bytes - 4 * ch) * 2 / ch;
3116 case AV_CODEC_ID_ADPCM_IMA_SMJPEG:
3117 return (frame_bytes - 4) * 2 / ch;
3118 case AV_CODEC_ID_ADPCM_IMA_AMV:
3119 return (frame_bytes - 8) * 2 / ch;
3120 case AV_CODEC_ID_ADPCM_XA:
3121 return (frame_bytes / 128) * 224 / ch;
3122 case AV_CODEC_ID_INTERPLAY_DPCM:
3123 return (frame_bytes - 6 - ch) / ch;
3124 case AV_CODEC_ID_ROQ_DPCM:
3125 return (frame_bytes - 8) / ch;
3126 case AV_CODEC_ID_XAN_DPCM:
3127 return (frame_bytes - 2 * ch) / ch;
3128 case AV_CODEC_ID_MACE3:
3129 return 3 * frame_bytes / ch;
3130 case AV_CODEC_ID_MACE6:
3131 return 6 * frame_bytes / ch;
3132 case AV_CODEC_ID_PCM_LXF:
3133 return 2 * (frame_bytes / (5 * ch));
3134 case AV_CODEC_ID_IAC:
3135 case AV_CODEC_ID_IMC:
3136 return 4 * frame_bytes / ch;
3140 /* calc from frame_bytes, channels, and codec_tag */
3141 if (id == AV_CODEC_ID_SOL_DPCM) {
3143 return frame_bytes / ch;
3145 return frame_bytes * 2 / ch;
3150 /* calc from frame_bytes, channels, and block_align */
3151 int blocks = frame_bytes / ba;
3152 switch (avctx->codec_id) {
3153 case AV_CODEC_ID_ADPCM_IMA_WAV:
3154 if (bps < 2 || bps > 5)
3156 return blocks * (1 + (ba - 4 * ch) / (bps * ch) * 8);
3157 case AV_CODEC_ID_ADPCM_IMA_DK3:
3158 return blocks * (((ba - 16) * 2 / 3 * 4) / ch);
3159 case AV_CODEC_ID_ADPCM_IMA_DK4:
3160 return blocks * (1 + (ba - 4 * ch) * 2 / ch);
3161 case AV_CODEC_ID_ADPCM_IMA_RAD:
3162 return blocks * ((ba - 4 * ch) * 2 / ch);
3163 case AV_CODEC_ID_ADPCM_MS:
3164 return blocks * (2 + (ba - 7 * ch) * 2 / ch);
3169 /* calc from frame_bytes, channels, and bits_per_coded_sample */
3170 switch (avctx->codec_id) {
3171 case AV_CODEC_ID_PCM_DVD:
3174 return 2 * (frame_bytes / ((bps * 2 / 8) * ch));
3175 case AV_CODEC_ID_PCM_BLURAY:
3178 return frame_bytes / ((FFALIGN(ch, 2) * bps) / 8);
3179 case AV_CODEC_ID_S302M:
3180 return 2 * (frame_bytes / ((bps + 4) / 4)) / ch;
3190 int ff_thread_init(AVCodecContext *s)
3197 unsigned int av_xiphlacing(unsigned char *s, unsigned int v)
3211 int ff_match_2uint16(const uint16_t(*tab)[2], int size, int a, int b)
3214 for (i = 0; i < size && !(tab[i][0] == a && tab[i][1] == b); i++) ;
3218 #if FF_API_MISSING_SAMPLE
3219 FF_DISABLE_DEPRECATION_WARNINGS
3220 void av_log_missing_feature(void *avc, const char *feature, int want_sample)
3222 av_log(avc, AV_LOG_WARNING, "%s is not implemented. Update your FFmpeg "
3223 "version to the newest one from Git. If the problem still "
3224 "occurs, it means that your file has a feature which has not "
3225 "been implemented.\n", feature);
3227 av_log_ask_for_sample(avc, NULL);
3230 void av_log_ask_for_sample(void *avc, const char *msg, ...)
3232 va_list argument_list;
3234 va_start(argument_list, msg);
3237 av_vlog(avc, AV_LOG_WARNING, msg, argument_list);
3238 av_log(avc, AV_LOG_WARNING, "If you want to help, upload a sample "
3239 "of this file to ftp://upload.ffmpeg.org/MPlayer/incoming/ "
3240 "and contact the ffmpeg-devel mailing list.\n");
3242 va_end(argument_list);
3244 FF_ENABLE_DEPRECATION_WARNINGS
3245 #endif /* FF_API_MISSING_SAMPLE */
3247 static AVHWAccel *first_hwaccel = NULL;
3248 static AVHWAccel **last_hwaccel = &first_hwaccel;
3250 void av_register_hwaccel(AVHWAccel *hwaccel)
3252 AVHWAccel **p = last_hwaccel;
3253 hwaccel->next = NULL;
3254 while(*p || avpriv_atomic_ptr_cas((void * volatile *)p, NULL, hwaccel))
3256 last_hwaccel = &hwaccel->next;
3259 AVHWAccel *av_hwaccel_next(AVHWAccel *hwaccel)
3261 return hwaccel ? hwaccel->next : first_hwaccel;
3264 AVHWAccel *ff_find_hwaccel(AVCodecContext *avctx)
3266 enum AVCodecID codec_id = avctx->codec->id;
3267 enum AVPixelFormat pix_fmt = avctx->pix_fmt;
3269 AVHWAccel *hwaccel = NULL;
3271 while ((hwaccel = av_hwaccel_next(hwaccel)))
3272 if (hwaccel->id == codec_id
3273 && hwaccel->pix_fmt == pix_fmt)
3278 int av_lockmgr_register(int (*cb)(void **mutex, enum AVLockOp op))
3281 if (lockmgr_cb(&codec_mutex, AV_LOCK_DESTROY))
3283 if (lockmgr_cb(&avformat_mutex, AV_LOCK_DESTROY))
3290 if (lockmgr_cb(&codec_mutex, AV_LOCK_CREATE))
3292 if (lockmgr_cb(&avformat_mutex, AV_LOCK_CREATE))
3298 int ff_lock_avcodec(AVCodecContext *log_ctx)
3301 if ((*lockmgr_cb)(&codec_mutex, AV_LOCK_OBTAIN))
3304 entangled_thread_counter++;
3305 if (entangled_thread_counter != 1) {
3306 av_log(log_ctx, AV_LOG_ERROR, "Insufficient thread locking around avcodec_open/close()\n");
3308 av_log(log_ctx, AV_LOG_ERROR, "No lock manager is set, please see av_lockmgr_register()\n");
3309 ff_avcodec_locked = 1;
3310 ff_unlock_avcodec();
3311 return AVERROR(EINVAL);
3313 av_assert0(!ff_avcodec_locked);
3314 ff_avcodec_locked = 1;
3318 int ff_unlock_avcodec(void)
3320 av_assert0(ff_avcodec_locked);
3321 ff_avcodec_locked = 0;
3322 entangled_thread_counter--;
3324 if ((*lockmgr_cb)(&codec_mutex, AV_LOCK_RELEASE))
3330 int avpriv_lock_avformat(void)
3333 if ((*lockmgr_cb)(&avformat_mutex, AV_LOCK_OBTAIN))
3339 int avpriv_unlock_avformat(void)
3342 if ((*lockmgr_cb)(&avformat_mutex, AV_LOCK_RELEASE))
3348 unsigned int avpriv_toupper4(unsigned int x)
3350 return av_toupper(x & 0xFF) +
3351 (av_toupper((x >> 8) & 0xFF) << 8) +
3352 (av_toupper((x >> 16) & 0xFF) << 16) +
3353 (av_toupper((x >> 24) & 0xFF) << 24);
3356 int ff_thread_ref_frame(ThreadFrame *dst, ThreadFrame *src)
3360 dst->owner = src->owner;
3362 ret = av_frame_ref(dst->f, src->f);
3366 if (src->progress &&
3367 !(dst->progress = av_buffer_ref(src->progress))) {
3368 ff_thread_release_buffer(dst->owner, dst);
3369 return AVERROR(ENOMEM);
3377 enum AVPixelFormat ff_thread_get_format(AVCodecContext *avctx, const enum AVPixelFormat *fmt)
3379 return avctx->get_format(avctx, fmt);
3382 int ff_thread_get_buffer(AVCodecContext *avctx, ThreadFrame *f, int flags)
3385 return ff_get_buffer(avctx, f->f, flags);
3388 void ff_thread_release_buffer(AVCodecContext *avctx, ThreadFrame *f)
3390 av_frame_unref(f->f);
3393 void ff_thread_finish_setup(AVCodecContext *avctx)
3397 void ff_thread_report_progress(ThreadFrame *f, int progress, int field)
3401 void ff_thread_await_progress(ThreadFrame *f, int progress, int field)
3405 int ff_thread_can_start_frame(AVCodecContext *avctx)
3410 int ff_alloc_entries(AVCodecContext *avctx, int count)
3415 void ff_reset_entries(AVCodecContext *avctx)
3419 void ff_thread_await_progress2(AVCodecContext *avctx, int field, int thread, int shift)
3423 void ff_thread_report_progress2(AVCodecContext *avctx, int field, int thread, int n)
3429 enum AVMediaType avcodec_get_type(enum AVCodecID codec_id)
3431 AVCodec *c= avcodec_find_decoder(codec_id);
3433 c= avcodec_find_encoder(codec_id);
3437 if (codec_id <= AV_CODEC_ID_NONE)
3438 return AVMEDIA_TYPE_UNKNOWN;
3439 else if (codec_id < AV_CODEC_ID_FIRST_AUDIO)
3440 return AVMEDIA_TYPE_VIDEO;
3441 else if (codec_id < AV_CODEC_ID_FIRST_SUBTITLE)
3442 return AVMEDIA_TYPE_AUDIO;
3443 else if (codec_id < AV_CODEC_ID_FIRST_UNKNOWN)
3444 return AVMEDIA_TYPE_SUBTITLE;
3446 return AVMEDIA_TYPE_UNKNOWN;
3449 int avcodec_is_open(AVCodecContext *s)
3451 return !!s->internal;
3454 int avpriv_bprint_to_extradata(AVCodecContext *avctx, struct AVBPrint *buf)
3459 ret = av_bprint_finalize(buf, &str);
3462 avctx->extradata = str;
3463 /* Note: the string is NUL terminated (so extradata can be read as a
3464 * string), but the ending character is not accounted in the size (in
3465 * binary formats you are likely not supposed to mux that character). When
3466 * extradata is copied, it is also padded with FF_INPUT_BUFFER_PADDING_SIZE
3468 avctx->extradata_size = buf->len;
3472 const uint8_t *avpriv_find_start_code(const uint8_t *av_restrict p,
3474 uint32_t *av_restrict state)
3478 av_assert0(p <= end);
3482 for (i = 0; i < 3; i++) {
3483 uint32_t tmp = *state << 8;
3484 *state = tmp + *(p++);
3485 if (tmp == 0x100 || p == end)
3490 if (p[-1] > 1 ) p += 3;
3491 else if (p[-2] ) p += 2;
3492 else if (p[-3]|(p[-1]-1)) p++;
3499 p = FFMIN(p, end) - 4;
3500 *state = AV_RB32(p);