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 void avcodec_align_dimensions2(AVCodecContext *s, int *width, int *height,
278 int linesize_align[AV_NUM_DATA_POINTERS])
284 switch (s->pix_fmt) {
285 case AV_PIX_FMT_YUV420P:
286 case AV_PIX_FMT_YUYV422:
287 case AV_PIX_FMT_UYVY422:
288 case AV_PIX_FMT_YUV422P:
289 case AV_PIX_FMT_YUV440P:
290 case AV_PIX_FMT_YUV444P:
291 case AV_PIX_FMT_GBRAP:
292 case AV_PIX_FMT_GBRP:
293 case AV_PIX_FMT_GRAY8:
294 case AV_PIX_FMT_GRAY16BE:
295 case AV_PIX_FMT_GRAY16LE:
296 case AV_PIX_FMT_YUVJ420P:
297 case AV_PIX_FMT_YUVJ422P:
298 case AV_PIX_FMT_YUVJ440P:
299 case AV_PIX_FMT_YUVJ444P:
300 case AV_PIX_FMT_YUVA420P:
301 case AV_PIX_FMT_YUVA422P:
302 case AV_PIX_FMT_YUVA444P:
303 case AV_PIX_FMT_YUV420P9LE:
304 case AV_PIX_FMT_YUV420P9BE:
305 case AV_PIX_FMT_YUV420P10LE:
306 case AV_PIX_FMT_YUV420P10BE:
307 case AV_PIX_FMT_YUV420P12LE:
308 case AV_PIX_FMT_YUV420P12BE:
309 case AV_PIX_FMT_YUV420P14LE:
310 case AV_PIX_FMT_YUV420P14BE:
311 case AV_PIX_FMT_YUV420P16LE:
312 case AV_PIX_FMT_YUV420P16BE:
313 case AV_PIX_FMT_YUVA420P9LE:
314 case AV_PIX_FMT_YUVA420P9BE:
315 case AV_PIX_FMT_YUVA420P10LE:
316 case AV_PIX_FMT_YUVA420P10BE:
317 case AV_PIX_FMT_YUVA420P16LE:
318 case AV_PIX_FMT_YUVA420P16BE:
319 case AV_PIX_FMT_YUV422P9LE:
320 case AV_PIX_FMT_YUV422P9BE:
321 case AV_PIX_FMT_YUV422P10LE:
322 case AV_PIX_FMT_YUV422P10BE:
323 case AV_PIX_FMT_YUV422P12LE:
324 case AV_PIX_FMT_YUV422P12BE:
325 case AV_PIX_FMT_YUV422P14LE:
326 case AV_PIX_FMT_YUV422P14BE:
327 case AV_PIX_FMT_YUV422P16LE:
328 case AV_PIX_FMT_YUV422P16BE:
329 case AV_PIX_FMT_YUVA422P9LE:
330 case AV_PIX_FMT_YUVA422P9BE:
331 case AV_PIX_FMT_YUVA422P10LE:
332 case AV_PIX_FMT_YUVA422P10BE:
333 case AV_PIX_FMT_YUVA422P16LE:
334 case AV_PIX_FMT_YUVA422P16BE:
335 case AV_PIX_FMT_YUV444P9LE:
336 case AV_PIX_FMT_YUV444P9BE:
337 case AV_PIX_FMT_YUV444P10LE:
338 case AV_PIX_FMT_YUV444P10BE:
339 case AV_PIX_FMT_YUV444P12LE:
340 case AV_PIX_FMT_YUV444P12BE:
341 case AV_PIX_FMT_YUV444P14LE:
342 case AV_PIX_FMT_YUV444P14BE:
343 case AV_PIX_FMT_YUV444P16LE:
344 case AV_PIX_FMT_YUV444P16BE:
345 case AV_PIX_FMT_YUVA444P9LE:
346 case AV_PIX_FMT_YUVA444P9BE:
347 case AV_PIX_FMT_YUVA444P10LE:
348 case AV_PIX_FMT_YUVA444P10BE:
349 case AV_PIX_FMT_YUVA444P16LE:
350 case AV_PIX_FMT_YUVA444P16BE:
351 case AV_PIX_FMT_GBRP9LE:
352 case AV_PIX_FMT_GBRP9BE:
353 case AV_PIX_FMT_GBRP10LE:
354 case AV_PIX_FMT_GBRP10BE:
355 case AV_PIX_FMT_GBRP12LE:
356 case AV_PIX_FMT_GBRP12BE:
357 case AV_PIX_FMT_GBRP14LE:
358 case AV_PIX_FMT_GBRP14BE:
359 w_align = 16; //FIXME assume 16 pixel per macroblock
360 h_align = 16 * 2; // interlaced needs 2 macroblocks height
362 case AV_PIX_FMT_YUV411P:
363 case AV_PIX_FMT_YUVJ411P:
364 case AV_PIX_FMT_UYYVYY411:
368 case AV_PIX_FMT_YUV410P:
369 if (s->codec_id == AV_CODEC_ID_SVQ1) {
374 case AV_PIX_FMT_RGB555:
375 if (s->codec_id == AV_CODEC_ID_RPZA) {
380 case AV_PIX_FMT_PAL8:
381 case AV_PIX_FMT_BGR8:
382 case AV_PIX_FMT_RGB8:
383 if (s->codec_id == AV_CODEC_ID_SMC ||
384 s->codec_id == AV_CODEC_ID_CINEPAK) {
389 case AV_PIX_FMT_BGR24:
390 if ((s->codec_id == AV_CODEC_ID_MSZH) ||
391 (s->codec_id == AV_CODEC_ID_ZLIB)) {
396 case AV_PIX_FMT_RGB24:
397 if (s->codec_id == AV_CODEC_ID_CINEPAK) {
408 if (s->codec_id == AV_CODEC_ID_IFF_ILBM || s->codec_id == AV_CODEC_ID_IFF_BYTERUN1) {
409 w_align = FFMAX(w_align, 8);
412 *width = FFALIGN(*width, w_align);
413 *height = FFALIGN(*height, h_align);
414 if (s->codec_id == AV_CODEC_ID_H264 || s->lowres)
415 // some of the optimized chroma MC reads one line too much
416 // which is also done in mpeg decoders with lowres > 0
419 for (i = 0; i < 4; i++)
420 linesize_align[i] = STRIDE_ALIGN;
423 void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height)
425 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(s->pix_fmt);
426 int chroma_shift = desc->log2_chroma_w;
427 int linesize_align[AV_NUM_DATA_POINTERS];
430 avcodec_align_dimensions2(s, width, height, linesize_align);
431 align = FFMAX(linesize_align[0], linesize_align[3]);
432 linesize_align[1] <<= chroma_shift;
433 linesize_align[2] <<= chroma_shift;
434 align = FFMAX3(align, linesize_align[1], linesize_align[2]);
435 *width = FFALIGN(*width, align);
438 int avcodec_enum_to_chroma_pos(int *xpos, int *ypos, enum AVChromaLocation pos)
440 if (pos <= AVCHROMA_LOC_UNSPECIFIED || pos >= AVCHROMA_LOC_NB)
441 return AVERROR(EINVAL);
444 *xpos = (pos&1) * 128;
445 *ypos = ((pos>>1)^(pos<4)) * 128;
450 enum AVChromaLocation avcodec_chroma_pos_to_enum(int xpos, int ypos)
454 for (pos = AVCHROMA_LOC_UNSPECIFIED + 1; pos < AVCHROMA_LOC_NB; pos++) {
455 if (avcodec_enum_to_chroma_pos(&xout, &yout, pos) == 0 && xout == xpos && yout == ypos)
458 return AVCHROMA_LOC_UNSPECIFIED;
461 int avcodec_fill_audio_frame(AVFrame *frame, int nb_channels,
462 enum AVSampleFormat sample_fmt, const uint8_t *buf,
463 int buf_size, int align)
465 int ch, planar, needed_size, ret = 0;
467 needed_size = av_samples_get_buffer_size(NULL, nb_channels,
468 frame->nb_samples, sample_fmt,
470 if (buf_size < needed_size)
471 return AVERROR(EINVAL);
473 planar = av_sample_fmt_is_planar(sample_fmt);
474 if (planar && nb_channels > AV_NUM_DATA_POINTERS) {
475 if (!(frame->extended_data = av_mallocz(nb_channels *
476 sizeof(*frame->extended_data))))
477 return AVERROR(ENOMEM);
479 frame->extended_data = frame->data;
482 if ((ret = av_samples_fill_arrays(frame->extended_data, &frame->linesize[0],
483 (uint8_t *)(intptr_t)buf, nb_channels, frame->nb_samples,
484 sample_fmt, align)) < 0) {
485 if (frame->extended_data != frame->data)
486 av_freep(&frame->extended_data);
489 if (frame->extended_data != frame->data) {
490 for (ch = 0; ch < AV_NUM_DATA_POINTERS; ch++)
491 frame->data[ch] = frame->extended_data[ch];
497 static int update_frame_pool(AVCodecContext *avctx, AVFrame *frame)
499 FramePool *pool = avctx->internal->pool;
502 switch (avctx->codec_type) {
503 case AVMEDIA_TYPE_VIDEO: {
506 int w = frame->width;
507 int h = frame->height;
508 int tmpsize, unaligned;
510 if (pool->format == frame->format &&
511 pool->width == frame->width && pool->height == frame->height)
514 avcodec_align_dimensions2(avctx, &w, &h, pool->stride_align);
516 if (!(avctx->flags & CODEC_FLAG_EMU_EDGE)) {
522 // NOTE: do not align linesizes individually, this breaks e.g. assumptions
523 // that linesize[0] == 2*linesize[1] in the MPEG-encoder for 4:2:2
524 av_image_fill_linesizes(picture.linesize, avctx->pix_fmt, w);
525 // increase alignment of w for next try (rhs gives the lowest bit set in w)
529 for (i = 0; i < 4; i++)
530 unaligned |= picture.linesize[i] % pool->stride_align[i];
533 tmpsize = av_image_fill_pointers(picture.data, avctx->pix_fmt, h,
534 NULL, picture.linesize);
538 for (i = 0; i < 3 && picture.data[i + 1]; i++)
539 size[i] = picture.data[i + 1] - picture.data[i];
540 size[i] = tmpsize - (picture.data[i] - picture.data[0]);
542 for (i = 0; i < 4; i++) {
543 av_buffer_pool_uninit(&pool->pools[i]);
544 pool->linesize[i] = picture.linesize[i];
546 pool->pools[i] = av_buffer_pool_init(size[i] + 16 + STRIDE_ALIGN - 1,
547 CONFIG_MEMORY_POISONING ?
550 if (!pool->pools[i]) {
551 ret = AVERROR(ENOMEM);
556 pool->format = frame->format;
557 pool->width = frame->width;
558 pool->height = frame->height;
562 case AVMEDIA_TYPE_AUDIO: {
563 int ch = av_frame_get_channels(frame); //av_get_channel_layout_nb_channels(frame->channel_layout);
564 int planar = av_sample_fmt_is_planar(frame->format);
565 int planes = planar ? ch : 1;
567 if (pool->format == frame->format && pool->planes == planes &&
568 pool->channels == ch && frame->nb_samples == pool->samples)
571 av_buffer_pool_uninit(&pool->pools[0]);
572 ret = av_samples_get_buffer_size(&pool->linesize[0], ch,
573 frame->nb_samples, frame->format, 0);
577 pool->pools[0] = av_buffer_pool_init(pool->linesize[0], NULL);
578 if (!pool->pools[0]) {
579 ret = AVERROR(ENOMEM);
583 pool->format = frame->format;
584 pool->planes = planes;
586 pool->samples = frame->nb_samples;
589 default: av_assert0(0);
593 for (i = 0; i < 4; i++)
594 av_buffer_pool_uninit(&pool->pools[i]);
596 pool->planes = pool->channels = pool->samples = 0;
597 pool->width = pool->height = 0;
601 static int audio_get_buffer(AVCodecContext *avctx, AVFrame *frame)
603 FramePool *pool = avctx->internal->pool;
604 int planes = pool->planes;
607 frame->linesize[0] = pool->linesize[0];
609 if (planes > AV_NUM_DATA_POINTERS) {
610 frame->extended_data = av_mallocz(planes * sizeof(*frame->extended_data));
611 frame->nb_extended_buf = planes - AV_NUM_DATA_POINTERS;
612 frame->extended_buf = av_mallocz(frame->nb_extended_buf *
613 sizeof(*frame->extended_buf));
614 if (!frame->extended_data || !frame->extended_buf) {
615 av_freep(&frame->extended_data);
616 av_freep(&frame->extended_buf);
617 return AVERROR(ENOMEM);
620 frame->extended_data = frame->data;
621 av_assert0(frame->nb_extended_buf == 0);
624 for (i = 0; i < FFMIN(planes, AV_NUM_DATA_POINTERS); i++) {
625 frame->buf[i] = av_buffer_pool_get(pool->pools[0]);
628 frame->extended_data[i] = frame->data[i] = frame->buf[i]->data;
630 for (i = 0; i < frame->nb_extended_buf; i++) {
631 frame->extended_buf[i] = av_buffer_pool_get(pool->pools[0]);
632 if (!frame->extended_buf[i])
634 frame->extended_data[i + AV_NUM_DATA_POINTERS] = frame->extended_buf[i]->data;
637 if (avctx->debug & FF_DEBUG_BUFFERS)
638 av_log(avctx, AV_LOG_DEBUG, "default_get_buffer called on frame %p", frame);
642 av_frame_unref(frame);
643 return AVERROR(ENOMEM);
646 static int video_get_buffer(AVCodecContext *s, AVFrame *pic)
648 FramePool *pool = s->internal->pool;
649 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pic->format);
650 int pixel_size = desc->comp[0].step_minus1 + 1;
651 int h_chroma_shift, v_chroma_shift;
654 if (pic->data[0] != NULL) {
655 av_log(s, AV_LOG_ERROR, "pic->data[0]!=NULL in avcodec_default_get_buffer\n");
659 memset(pic->data, 0, sizeof(pic->data));
660 pic->extended_data = pic->data;
662 av_pix_fmt_get_chroma_sub_sample(s->pix_fmt, &h_chroma_shift, &v_chroma_shift);
664 for (i = 0; i < 4 && pool->pools[i]; i++) {
665 const int h_shift = i == 0 ? 0 : h_chroma_shift;
666 const int v_shift = i == 0 ? 0 : v_chroma_shift;
667 int is_planar = pool->pools[2] || (i==0 && s->pix_fmt == AV_PIX_FMT_GRAY8);
669 pic->linesize[i] = pool->linesize[i];
671 pic->buf[i] = av_buffer_pool_get(pool->pools[i]);
675 // no edge if EDGE EMU or not planar YUV
676 if ((s->flags & CODEC_FLAG_EMU_EDGE) || !is_planar)
677 pic->data[i] = pic->buf[i]->data;
679 pic->data[i] = pic->buf[i]->data +
680 FFALIGN((pic->linesize[i] * EDGE_WIDTH >> v_shift) +
681 (pixel_size * EDGE_WIDTH >> h_shift), pool->stride_align[i]);
684 for (; i < AV_NUM_DATA_POINTERS; i++) {
686 pic->linesize[i] = 0;
688 if (pic->data[1] && !pic->data[2])
689 avpriv_set_systematic_pal2((uint32_t *)pic->data[1], s->pix_fmt);
691 if (s->debug & FF_DEBUG_BUFFERS)
692 av_log(s, AV_LOG_DEBUG, "default_get_buffer called on pic %p\n", pic);
697 return AVERROR(ENOMEM);
700 void avpriv_color_frame(AVFrame *frame, const int c[4])
702 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(frame->format);
705 av_assert0(desc->flags & AV_PIX_FMT_FLAG_PLANAR);
707 for (p = 0; p<desc->nb_components; p++) {
708 uint8_t *dst = frame->data[p];
709 int is_chroma = p == 1 || p == 2;
710 int bytes = is_chroma ? FF_CEIL_RSHIFT(frame->width, desc->log2_chroma_w) : frame->width;
711 int height = is_chroma ? FF_CEIL_RSHIFT(frame->height, desc->log2_chroma_h) : frame->height;
712 for (y = 0; y < height; y++) {
713 if (desc->comp[0].depth_minus1 >= 8) {
714 for (x = 0; x<bytes; x++)
715 ((uint16_t*)dst)[x] = c[p];
717 memset(dst, c[p], bytes);
718 dst += frame->linesize[p];
723 int avcodec_default_get_buffer2(AVCodecContext *avctx, AVFrame *frame, int flags)
727 if ((ret = update_frame_pool(avctx, frame)) < 0)
730 #if FF_API_GET_BUFFER
731 FF_DISABLE_DEPRECATION_WARNINGS
732 frame->type = FF_BUFFER_TYPE_INTERNAL;
733 FF_ENABLE_DEPRECATION_WARNINGS
736 switch (avctx->codec_type) {
737 case AVMEDIA_TYPE_VIDEO:
738 return video_get_buffer(avctx, frame);
739 case AVMEDIA_TYPE_AUDIO:
740 return audio_get_buffer(avctx, frame);
746 int ff_init_buffer_info(AVCodecContext *avctx, AVFrame *frame)
748 if (avctx->internal->pkt) {
749 frame->pkt_pts = avctx->internal->pkt->pts;
750 av_frame_set_pkt_pos (frame, avctx->internal->pkt->pos);
751 av_frame_set_pkt_duration(frame, avctx->internal->pkt->duration);
752 av_frame_set_pkt_size (frame, avctx->internal->pkt->size);
754 frame->pkt_pts = AV_NOPTS_VALUE;
755 av_frame_set_pkt_pos (frame, -1);
756 av_frame_set_pkt_duration(frame, 0);
757 av_frame_set_pkt_size (frame, -1);
759 frame->reordered_opaque = avctx->reordered_opaque;
761 switch (avctx->codec->type) {
762 case AVMEDIA_TYPE_VIDEO:
763 frame->format = avctx->pix_fmt;
764 if (!frame->sample_aspect_ratio.num)
765 frame->sample_aspect_ratio = avctx->sample_aspect_ratio;
766 if (av_frame_get_colorspace(frame) == AVCOL_SPC_UNSPECIFIED)
767 av_frame_set_colorspace(frame, avctx->colorspace);
768 if (av_frame_get_color_range(frame) == AVCOL_RANGE_UNSPECIFIED)
769 av_frame_set_color_range(frame, avctx->color_range);
771 case AVMEDIA_TYPE_AUDIO:
772 if (!frame->sample_rate)
773 frame->sample_rate = avctx->sample_rate;
774 if (frame->format < 0)
775 frame->format = avctx->sample_fmt;
776 if (!frame->channel_layout) {
777 if (avctx->channel_layout) {
778 if (av_get_channel_layout_nb_channels(avctx->channel_layout) !=
780 av_log(avctx, AV_LOG_ERROR, "Inconsistent channel "
782 return AVERROR(EINVAL);
785 frame->channel_layout = avctx->channel_layout;
787 if (avctx->channels > FF_SANE_NB_CHANNELS) {
788 av_log(avctx, AV_LOG_ERROR, "Too many channels: %d.\n",
790 return AVERROR(ENOSYS);
794 av_frame_set_channels(frame, avctx->channels);
800 #if FF_API_GET_BUFFER
801 FF_DISABLE_DEPRECATION_WARNINGS
802 int avcodec_default_get_buffer(AVCodecContext *avctx, AVFrame *frame)
804 return avcodec_default_get_buffer2(avctx, frame, 0);
807 typedef struct CompatReleaseBufPriv {
808 AVCodecContext avctx;
810 } CompatReleaseBufPriv;
812 static void compat_free_buffer(void *opaque, uint8_t *data)
814 CompatReleaseBufPriv *priv = opaque;
815 if (priv->avctx.release_buffer)
816 priv->avctx.release_buffer(&priv->avctx, &priv->frame);
820 static void compat_release_buffer(void *opaque, uint8_t *data)
822 AVBufferRef *buf = opaque;
823 av_buffer_unref(&buf);
825 FF_ENABLE_DEPRECATION_WARNINGS
828 static int get_buffer_internal(AVCodecContext *avctx, AVFrame *frame, int flags)
830 int override_dimensions = 1;
833 if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
834 if ((ret = av_image_check_size(avctx->width, avctx->height, 0, avctx)) < 0 || avctx->pix_fmt<0) {
835 av_log(avctx, AV_LOG_ERROR, "video_get_buffer: image parameters invalid\n");
836 return AVERROR(EINVAL);
839 if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
840 if (frame->width <= 0 || frame->height <= 0) {
841 frame->width = FFMAX(avctx->width, FF_CEIL_RSHIFT(avctx->coded_width, avctx->lowres));
842 frame->height = FFMAX(avctx->height, FF_CEIL_RSHIFT(avctx->coded_height, avctx->lowres));
843 override_dimensions = 0;
846 if ((ret = ff_init_buffer_info(avctx, frame)) < 0)
849 #if FF_API_GET_BUFFER
850 FF_DISABLE_DEPRECATION_WARNINGS
852 * Wrap an old get_buffer()-allocated buffer in a bunch of AVBuffers.
853 * We wrap each plane in its own AVBuffer. Each of those has a reference to
854 * a dummy AVBuffer as its private data, unreffing it on free.
855 * When all the planes are freed, the dummy buffer's free callback calls
858 if (avctx->get_buffer) {
859 CompatReleaseBufPriv *priv = NULL;
860 AVBufferRef *dummy_buf = NULL;
863 if (flags & AV_GET_BUFFER_FLAG_REF)
864 frame->reference = 1;
866 ret = avctx->get_buffer(avctx, frame);
870 /* return if the buffers are already set up
871 * this would happen e.g. when a custom get_buffer() calls
872 * avcodec_default_get_buffer
877 priv = av_mallocz(sizeof(*priv));
879 ret = AVERROR(ENOMEM);
882 priv->avctx = *avctx;
883 priv->frame = *frame;
885 dummy_buf = av_buffer_create(NULL, 0, compat_free_buffer, priv, 0);
887 ret = AVERROR(ENOMEM);
891 #define WRAP_PLANE(ref_out, data, data_size) \
893 AVBufferRef *dummy_ref = av_buffer_ref(dummy_buf); \
895 ret = AVERROR(ENOMEM); \
898 ref_out = av_buffer_create(data, data_size, compat_release_buffer, \
901 av_frame_unref(frame); \
902 ret = AVERROR(ENOMEM); \
907 if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
908 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(frame->format);
910 planes = av_pix_fmt_count_planes(frame->format);
911 /* workaround for AVHWAccel plane count of 0, buf[0] is used as
912 check for allocated buffers: make libavcodec happy */
913 if (desc && desc->flags & AV_PIX_FMT_FLAG_HWACCEL)
915 if (!desc || planes <= 0) {
916 ret = AVERROR(EINVAL);
920 for (i = 0; i < planes; i++) {
921 int v_shift = (i == 1 || i == 2) ? desc->log2_chroma_h : 0;
922 int plane_size = (frame->height >> v_shift) * frame->linesize[i];
924 WRAP_PLANE(frame->buf[i], frame->data[i], plane_size);
927 int planar = av_sample_fmt_is_planar(frame->format);
928 planes = planar ? avctx->channels : 1;
930 if (planes > FF_ARRAY_ELEMS(frame->buf)) {
931 frame->nb_extended_buf = planes - FF_ARRAY_ELEMS(frame->buf);
932 frame->extended_buf = av_malloc(sizeof(*frame->extended_buf) *
933 frame->nb_extended_buf);
934 if (!frame->extended_buf) {
935 ret = AVERROR(ENOMEM);
940 for (i = 0; i < FFMIN(planes, FF_ARRAY_ELEMS(frame->buf)); i++)
941 WRAP_PLANE(frame->buf[i], frame->extended_data[i], frame->linesize[0]);
943 for (i = 0; i < frame->nb_extended_buf; i++)
944 WRAP_PLANE(frame->extended_buf[i],
945 frame->extended_data[i + FF_ARRAY_ELEMS(frame->buf)],
949 av_buffer_unref(&dummy_buf);
952 frame->width = avctx->width;
953 frame->height = avctx->height;
958 avctx->release_buffer(avctx, frame);
960 av_buffer_unref(&dummy_buf);
963 FF_ENABLE_DEPRECATION_WARNINGS
966 ret = avctx->get_buffer2(avctx, frame, flags);
968 if (avctx->codec_type == AVMEDIA_TYPE_VIDEO && !override_dimensions) {
969 frame->width = avctx->width;
970 frame->height = avctx->height;
976 int ff_get_buffer(AVCodecContext *avctx, AVFrame *frame, int flags)
978 int ret = get_buffer_internal(avctx, frame, flags);
980 av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
984 static int reget_buffer_internal(AVCodecContext *avctx, AVFrame *frame)
989 av_assert0(avctx->codec_type == AVMEDIA_TYPE_VIDEO);
991 if (frame->data[0] && (frame->width != avctx->width || frame->height != avctx->height || frame->format != avctx->pix_fmt)) {
992 av_log(avctx, AV_LOG_WARNING, "Picture changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s in reget buffer()\n",
993 frame->width, frame->height, av_get_pix_fmt_name(frame->format), avctx->width, avctx->height, av_get_pix_fmt_name(avctx->pix_fmt));
994 av_frame_unref(frame);
997 ff_init_buffer_info(avctx, frame);
1000 return ff_get_buffer(avctx, frame, AV_GET_BUFFER_FLAG_REF);
1002 if (av_frame_is_writable(frame)) {
1003 frame->pkt_pts = avctx->internal->pkt ? avctx->internal->pkt->pts : AV_NOPTS_VALUE;
1004 frame->reordered_opaque = avctx->reordered_opaque;
1008 tmp = av_frame_alloc();
1010 return AVERROR(ENOMEM);
1012 av_frame_move_ref(tmp, frame);
1014 ret = ff_get_buffer(avctx, frame, AV_GET_BUFFER_FLAG_REF);
1016 av_frame_free(&tmp);
1020 av_frame_copy(frame, tmp);
1021 av_frame_free(&tmp);
1026 int ff_reget_buffer(AVCodecContext *avctx, AVFrame *frame)
1028 int ret = reget_buffer_internal(avctx, frame);
1030 av_log(avctx, AV_LOG_ERROR, "reget_buffer() failed\n");
1034 #if FF_API_GET_BUFFER
1035 void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic)
1037 av_assert0(s->codec_type == AVMEDIA_TYPE_VIDEO);
1039 av_frame_unref(pic);
1042 int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic)
1049 int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2), void *arg, int *ret, int count, int size)
1053 for (i = 0; i < count; i++) {
1054 int r = func(c, (char *)arg + i * size);
1061 int avcodec_default_execute2(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2, int jobnr, int threadnr), void *arg, int *ret, int count)
1065 for (i = 0; i < count; i++) {
1066 int r = func(c, arg, i, 0);
1073 static int is_hwaccel_pix_fmt(enum AVPixelFormat pix_fmt)
1075 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
1076 return desc->flags & AV_PIX_FMT_FLAG_HWACCEL;
1079 enum AVPixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum AVPixelFormat *fmt)
1081 while (*fmt != AV_PIX_FMT_NONE && is_hwaccel_pix_fmt(*fmt))
1086 #if FF_API_AVFRAME_LAVC
1087 void avcodec_get_frame_defaults(AVFrame *frame)
1089 #if LIBAVCODEC_VERSION_MAJOR >= 55
1090 // extended_data should explicitly be freed when needed, this code is unsafe currently
1091 // also this is not compatible to the <55 ABI/API
1092 if (frame->extended_data != frame->data && 0)
1093 av_freep(&frame->extended_data);
1096 memset(frame, 0, sizeof(AVFrame));
1097 av_frame_unref(frame);
1100 AVFrame *avcodec_alloc_frame(void)
1102 return av_frame_alloc();
1105 void avcodec_free_frame(AVFrame **frame)
1107 av_frame_free(frame);
1111 MAKE_ACCESSORS(AVCodecContext, codec, AVRational, pkt_timebase)
1112 MAKE_ACCESSORS(AVCodecContext, codec, const AVCodecDescriptor *, codec_descriptor)
1113 MAKE_ACCESSORS(AVCodecContext, codec, int, lowres)
1114 MAKE_ACCESSORS(AVCodecContext, codec, int, seek_preroll)
1115 MAKE_ACCESSORS(AVCodecContext, codec, uint16_t*, chroma_intra_matrix)
1117 int av_codec_get_max_lowres(const AVCodec *codec)
1119 return codec->max_lowres;
1122 static void avcodec_get_subtitle_defaults(AVSubtitle *sub)
1124 memset(sub, 0, sizeof(*sub));
1125 sub->pts = AV_NOPTS_VALUE;
1128 static int get_bit_rate(AVCodecContext *ctx)
1131 int bits_per_sample;
1133 switch (ctx->codec_type) {
1134 case AVMEDIA_TYPE_VIDEO:
1135 case AVMEDIA_TYPE_DATA:
1136 case AVMEDIA_TYPE_SUBTITLE:
1137 case AVMEDIA_TYPE_ATTACHMENT:
1138 bit_rate = ctx->bit_rate;
1140 case AVMEDIA_TYPE_AUDIO:
1141 bits_per_sample = av_get_bits_per_sample(ctx->codec_id);
1142 bit_rate = bits_per_sample ? ctx->sample_rate * ctx->channels * bits_per_sample : ctx->bit_rate;
1151 int attribute_align_arg ff_codec_open2_recursive(AVCodecContext *avctx, const AVCodec *codec, AVDictionary **options)
1155 ff_unlock_avcodec();
1157 ret = avcodec_open2(avctx, codec, options);
1159 ff_lock_avcodec(avctx);
1163 int attribute_align_arg avcodec_open2(AVCodecContext *avctx, const AVCodec *codec, AVDictionary **options)
1166 AVDictionary *tmp = NULL;
1168 if (avcodec_is_open(avctx))
1171 if ((!codec && !avctx->codec)) {
1172 av_log(avctx, AV_LOG_ERROR, "No codec provided to avcodec_open2()\n");
1173 return AVERROR(EINVAL);
1175 if ((codec && avctx->codec && codec != avctx->codec)) {
1176 av_log(avctx, AV_LOG_ERROR, "This AVCodecContext was allocated for %s, "
1177 "but %s passed to avcodec_open2()\n", avctx->codec->name, codec->name);
1178 return AVERROR(EINVAL);
1181 codec = avctx->codec;
1183 if (avctx->extradata_size < 0 || avctx->extradata_size >= FF_MAX_EXTRADATA_SIZE)
1184 return AVERROR(EINVAL);
1187 av_dict_copy(&tmp, *options, 0);
1189 ret = ff_lock_avcodec(avctx);
1193 avctx->internal = av_mallocz(sizeof(AVCodecInternal));
1194 if (!avctx->internal) {
1195 ret = AVERROR(ENOMEM);
1199 avctx->internal->pool = av_mallocz(sizeof(*avctx->internal->pool));
1200 if (!avctx->internal->pool) {
1201 ret = AVERROR(ENOMEM);
1205 avctx->internal->to_free = av_frame_alloc();
1206 if (!avctx->internal->to_free) {
1207 ret = AVERROR(ENOMEM);
1211 if (codec->priv_data_size > 0) {
1212 if (!avctx->priv_data) {
1213 avctx->priv_data = av_mallocz(codec->priv_data_size);
1214 if (!avctx->priv_data) {
1215 ret = AVERROR(ENOMEM);
1218 if (codec->priv_class) {
1219 *(const AVClass **)avctx->priv_data = codec->priv_class;
1220 av_opt_set_defaults(avctx->priv_data);
1223 if (codec->priv_class && (ret = av_opt_set_dict(avctx->priv_data, &tmp)) < 0)
1226 avctx->priv_data = NULL;
1228 if ((ret = av_opt_set_dict(avctx, &tmp)) < 0)
1231 // only call ff_set_dimensions() for non H.264/VP6F codecs so as not to overwrite previously setup dimensions
1232 if (!(avctx->coded_width && avctx->coded_height && avctx->width && avctx->height &&
1233 (avctx->codec_id == AV_CODEC_ID_H264 || avctx->codec_id == AV_CODEC_ID_VP6F))) {
1234 if (avctx->coded_width && avctx->coded_height)
1235 ret = ff_set_dimensions(avctx, avctx->coded_width, avctx->coded_height);
1236 else if (avctx->width && avctx->height)
1237 ret = ff_set_dimensions(avctx, avctx->width, avctx->height);
1242 if ((avctx->coded_width || avctx->coded_height || avctx->width || avctx->height)
1243 && ( av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx) < 0
1244 || av_image_check_size(avctx->width, avctx->height, 0, avctx) < 0)) {
1245 av_log(avctx, AV_LOG_WARNING, "Ignoring invalid width/height values\n");
1246 ff_set_dimensions(avctx, 0, 0);
1249 /* if the decoder init function was already called previously,
1250 * free the already allocated subtitle_header before overwriting it */
1251 if (av_codec_is_decoder(codec))
1252 av_freep(&avctx->subtitle_header);
1254 if (avctx->channels > FF_SANE_NB_CHANNELS) {
1255 ret = AVERROR(EINVAL);
1259 avctx->codec = codec;
1260 if ((avctx->codec_type == AVMEDIA_TYPE_UNKNOWN || avctx->codec_type == codec->type) &&
1261 avctx->codec_id == AV_CODEC_ID_NONE) {
1262 avctx->codec_type = codec->type;
1263 avctx->codec_id = codec->id;
1265 if (avctx->codec_id != codec->id || (avctx->codec_type != codec->type
1266 && avctx->codec_type != AVMEDIA_TYPE_ATTACHMENT)) {
1267 av_log(avctx, AV_LOG_ERROR, "Codec type or id mismatches\n");
1268 ret = AVERROR(EINVAL);
1271 avctx->frame_number = 0;
1272 avctx->codec_descriptor = avcodec_descriptor_get(avctx->codec_id);
1274 if (avctx->codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
1275 avctx->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
1276 const char *codec_string = av_codec_is_encoder(codec) ? "encoder" : "decoder";
1278 av_log(avctx, AV_LOG_ERROR,
1279 "The %s '%s' is experimental but experimental codecs are not enabled, "
1280 "add '-strict %d' if you want to use it.\n",
1281 codec_string, codec->name, FF_COMPLIANCE_EXPERIMENTAL);
1282 codec2 = av_codec_is_encoder(codec) ? avcodec_find_encoder(codec->id) : avcodec_find_decoder(codec->id);
1283 if (!(codec2->capabilities & CODEC_CAP_EXPERIMENTAL))
1284 av_log(avctx, AV_LOG_ERROR, "Alternatively use the non experimental %s '%s'.\n",
1285 codec_string, codec2->name);
1286 ret = AVERROR_EXPERIMENTAL;
1290 if (avctx->codec_type == AVMEDIA_TYPE_AUDIO &&
1291 (!avctx->time_base.num || !avctx->time_base.den)) {
1292 avctx->time_base.num = 1;
1293 avctx->time_base.den = avctx->sample_rate;
1297 av_log(avctx, AV_LOG_WARNING, "Warning: not compiled with thread support, using thread emulation\n");
1299 if (CONFIG_FRAME_THREAD_ENCODER) {
1300 ff_unlock_avcodec(); //we will instanciate a few encoders thus kick the counter to prevent false detection of a problem
1301 ret = ff_frame_thread_encoder_init(avctx, options ? *options : NULL);
1302 ff_lock_avcodec(avctx);
1308 && !(avctx->internal->frame_thread_encoder && (avctx->active_thread_type&FF_THREAD_FRAME))) {
1309 ret = ff_thread_init(avctx);
1314 if (!HAVE_THREADS && !(codec->capabilities & CODEC_CAP_AUTO_THREADS))
1315 avctx->thread_count = 1;
1317 if (avctx->codec->max_lowres < avctx->lowres || avctx->lowres < 0) {
1318 av_log(avctx, AV_LOG_ERROR, "The maximum value for lowres supported by the decoder is %d\n",
1319 avctx->codec->max_lowres);
1320 ret = AVERROR(EINVAL);
1324 if (av_codec_is_encoder(avctx->codec)) {
1326 if (avctx->codec->sample_fmts) {
1327 for (i = 0; avctx->codec->sample_fmts[i] != AV_SAMPLE_FMT_NONE; i++) {
1328 if (avctx->sample_fmt == avctx->codec->sample_fmts[i])
1330 if (avctx->channels == 1 &&
1331 av_get_planar_sample_fmt(avctx->sample_fmt) ==
1332 av_get_planar_sample_fmt(avctx->codec->sample_fmts[i])) {
1333 avctx->sample_fmt = avctx->codec->sample_fmts[i];
1337 if (avctx->codec->sample_fmts[i] == AV_SAMPLE_FMT_NONE) {
1339 snprintf(buf, sizeof(buf), "%d", avctx->sample_fmt);
1340 av_log(avctx, AV_LOG_ERROR, "Specified sample format %s is invalid or not supported\n",
1341 (char *)av_x_if_null(av_get_sample_fmt_name(avctx->sample_fmt), buf));
1342 ret = AVERROR(EINVAL);
1346 if (avctx->codec->pix_fmts) {
1347 for (i = 0; avctx->codec->pix_fmts[i] != AV_PIX_FMT_NONE; i++)
1348 if (avctx->pix_fmt == avctx->codec->pix_fmts[i])
1350 if (avctx->codec->pix_fmts[i] == AV_PIX_FMT_NONE
1351 && !((avctx->codec_id == AV_CODEC_ID_MJPEG || avctx->codec_id == AV_CODEC_ID_LJPEG)
1352 && avctx->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL)) {
1354 snprintf(buf, sizeof(buf), "%d", avctx->pix_fmt);
1355 av_log(avctx, AV_LOG_ERROR, "Specified pixel format %s is invalid or not supported\n",
1356 (char *)av_x_if_null(av_get_pix_fmt_name(avctx->pix_fmt), buf));
1357 ret = AVERROR(EINVAL);
1361 if (avctx->codec->supported_samplerates) {
1362 for (i = 0; avctx->codec->supported_samplerates[i] != 0; i++)
1363 if (avctx->sample_rate == avctx->codec->supported_samplerates[i])
1365 if (avctx->codec->supported_samplerates[i] == 0) {
1366 av_log(avctx, AV_LOG_ERROR, "Specified sample rate %d is not supported\n",
1367 avctx->sample_rate);
1368 ret = AVERROR(EINVAL);
1372 if (avctx->codec->channel_layouts) {
1373 if (!avctx->channel_layout) {
1374 av_log(avctx, AV_LOG_WARNING, "Channel layout not specified\n");
1376 for (i = 0; avctx->codec->channel_layouts[i] != 0; i++)
1377 if (avctx->channel_layout == avctx->codec->channel_layouts[i])
1379 if (avctx->codec->channel_layouts[i] == 0) {
1381 av_get_channel_layout_string(buf, sizeof(buf), -1, avctx->channel_layout);
1382 av_log(avctx, AV_LOG_ERROR, "Specified channel layout '%s' is not supported\n", buf);
1383 ret = AVERROR(EINVAL);
1388 if (avctx->channel_layout && avctx->channels) {
1389 int channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
1390 if (channels != avctx->channels) {
1392 av_get_channel_layout_string(buf, sizeof(buf), -1, avctx->channel_layout);
1393 av_log(avctx, AV_LOG_ERROR,
1394 "Channel layout '%s' with %d channels does not match number of specified channels %d\n",
1395 buf, channels, avctx->channels);
1396 ret = AVERROR(EINVAL);
1399 } else if (avctx->channel_layout) {
1400 avctx->channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
1402 if(avctx->codec_type == AVMEDIA_TYPE_VIDEO &&
1403 avctx->codec_id != AV_CODEC_ID_PNG // For mplayer
1405 if (avctx->width <= 0 || avctx->height <= 0) {
1406 av_log(avctx, AV_LOG_ERROR, "dimensions not set\n");
1407 ret = AVERROR(EINVAL);
1411 if ( (avctx->codec_type == AVMEDIA_TYPE_VIDEO || avctx->codec_type == AVMEDIA_TYPE_AUDIO)
1412 && avctx->bit_rate>0 && avctx->bit_rate<1000) {
1413 av_log(avctx, AV_LOG_WARNING, "Bitrate %d is extremely low, maybe you mean %dk\n", avctx->bit_rate, avctx->bit_rate);
1416 if (!avctx->rc_initial_buffer_occupancy)
1417 avctx->rc_initial_buffer_occupancy = avctx->rc_buffer_size * 3 / 4;
1420 avctx->pts_correction_num_faulty_pts =
1421 avctx->pts_correction_num_faulty_dts = 0;
1422 avctx->pts_correction_last_pts =
1423 avctx->pts_correction_last_dts = INT64_MIN;
1425 if ( avctx->codec->init && (!(avctx->active_thread_type&FF_THREAD_FRAME)
1426 || avctx->internal->frame_thread_encoder)) {
1427 ret = avctx->codec->init(avctx);
1435 if (av_codec_is_decoder(avctx->codec)) {
1436 if (!avctx->bit_rate)
1437 avctx->bit_rate = get_bit_rate(avctx);
1438 /* validate channel layout from the decoder */
1439 if (avctx->channel_layout) {
1440 int channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
1441 if (!avctx->channels)
1442 avctx->channels = channels;
1443 else if (channels != avctx->channels) {
1445 av_get_channel_layout_string(buf, sizeof(buf), -1, avctx->channel_layout);
1446 av_log(avctx, AV_LOG_WARNING,
1447 "Channel layout '%s' with %d channels does not match specified number of channels %d: "
1448 "ignoring specified channel layout\n",
1449 buf, channels, avctx->channels);
1450 avctx->channel_layout = 0;
1453 if (avctx->channels && avctx->channels < 0 ||
1454 avctx->channels > FF_SANE_NB_CHANNELS) {
1455 ret = AVERROR(EINVAL);
1458 if (avctx->sub_charenc) {
1459 if (avctx->codec_type != AVMEDIA_TYPE_SUBTITLE) {
1460 av_log(avctx, AV_LOG_ERROR, "Character encoding is only "
1461 "supported with subtitles codecs\n");
1462 ret = AVERROR(EINVAL);
1464 } else if (avctx->codec_descriptor->props & AV_CODEC_PROP_BITMAP_SUB) {
1465 av_log(avctx, AV_LOG_WARNING, "Codec '%s' is bitmap-based, "
1466 "subtitles character encoding will be ignored\n",
1467 avctx->codec_descriptor->name);
1468 avctx->sub_charenc_mode = FF_SUB_CHARENC_MODE_DO_NOTHING;
1470 /* input character encoding is set for a text based subtitle
1471 * codec at this point */
1472 if (avctx->sub_charenc_mode == FF_SUB_CHARENC_MODE_AUTOMATIC)
1473 avctx->sub_charenc_mode = FF_SUB_CHARENC_MODE_PRE_DECODER;
1475 if (avctx->sub_charenc_mode == FF_SUB_CHARENC_MODE_PRE_DECODER) {
1477 iconv_t cd = iconv_open("UTF-8", avctx->sub_charenc);
1478 if (cd == (iconv_t)-1) {
1479 av_log(avctx, AV_LOG_ERROR, "Unable to open iconv context "
1480 "with input character encoding \"%s\"\n", avctx->sub_charenc);
1481 ret = AVERROR(errno);
1486 av_log(avctx, AV_LOG_ERROR, "Character encoding subtitles "
1487 "conversion needs a libavcodec built with iconv support "
1488 "for this codec\n");
1489 ret = AVERROR(ENOSYS);
1497 ff_unlock_avcodec();
1499 av_dict_free(options);
1506 av_freep(&avctx->priv_data);
1507 if (avctx->internal) {
1508 av_frame_free(&avctx->internal->to_free);
1509 av_freep(&avctx->internal->pool);
1511 av_freep(&avctx->internal);
1512 avctx->codec = NULL;
1516 int ff_alloc_packet2(AVCodecContext *avctx, AVPacket *avpkt, int64_t size)
1518 if (avpkt->size < 0) {
1519 av_log(avctx, AV_LOG_ERROR, "Invalid negative user packet size %d\n", avpkt->size);
1520 return AVERROR(EINVAL);
1522 if (size < 0 || size > INT_MAX - FF_INPUT_BUFFER_PADDING_SIZE) {
1523 av_log(avctx, AV_LOG_ERROR, "Invalid minimum required packet size %"PRId64" (max allowed is %d)\n",
1524 size, INT_MAX - FF_INPUT_BUFFER_PADDING_SIZE);
1525 return AVERROR(EINVAL);
1529 av_assert0(!avpkt->data || avpkt->data != avctx->internal->byte_buffer);
1530 if (!avpkt->data || avpkt->size < size) {
1531 av_fast_padded_malloc(&avctx->internal->byte_buffer, &avctx->internal->byte_buffer_size, size);
1532 avpkt->data = avctx->internal->byte_buffer;
1533 avpkt->size = avctx->internal->byte_buffer_size;
1534 avpkt->destruct = NULL;
1539 AVBufferRef *buf = avpkt->buf;
1540 #if FF_API_DESTRUCT_PACKET
1541 FF_DISABLE_DEPRECATION_WARNINGS
1542 void *destruct = avpkt->destruct;
1543 FF_ENABLE_DEPRECATION_WARNINGS
1546 if (avpkt->size < size) {
1547 av_log(avctx, AV_LOG_ERROR, "User packet is too small (%d < %"PRId64")\n", avpkt->size, size);
1548 return AVERROR(EINVAL);
1551 av_init_packet(avpkt);
1552 #if FF_API_DESTRUCT_PACKET
1553 FF_DISABLE_DEPRECATION_WARNINGS
1554 avpkt->destruct = destruct;
1555 FF_ENABLE_DEPRECATION_WARNINGS
1561 int ret = av_new_packet(avpkt, size);
1563 av_log(avctx, AV_LOG_ERROR, "Failed to allocate packet of size %"PRId64"\n", size);
1568 int ff_alloc_packet(AVPacket *avpkt, int size)
1570 return ff_alloc_packet2(NULL, avpkt, size);
1574 * Pad last frame with silence.
1576 static int pad_last_frame(AVCodecContext *s, AVFrame **dst, const AVFrame *src)
1578 AVFrame *frame = NULL;
1581 if (!(frame = av_frame_alloc()))
1582 return AVERROR(ENOMEM);
1584 frame->format = src->format;
1585 frame->channel_layout = src->channel_layout;
1586 av_frame_set_channels(frame, av_frame_get_channels(src));
1587 frame->nb_samples = s->frame_size;
1588 ret = av_frame_get_buffer(frame, 32);
1592 ret = av_frame_copy_props(frame, src);
1596 if ((ret = av_samples_copy(frame->extended_data, src->extended_data, 0, 0,
1597 src->nb_samples, s->channels, s->sample_fmt)) < 0)
1599 if ((ret = av_samples_set_silence(frame->extended_data, src->nb_samples,
1600 frame->nb_samples - src->nb_samples,
1601 s->channels, s->sample_fmt)) < 0)
1609 av_frame_free(&frame);
1613 int attribute_align_arg avcodec_encode_audio2(AVCodecContext *avctx,
1615 const AVFrame *frame,
1616 int *got_packet_ptr)
1619 AVFrame *padded_frame = NULL;
1621 AVPacket user_pkt = *avpkt;
1622 int needs_realloc = !user_pkt.data;
1624 *got_packet_ptr = 0;
1626 if (!(avctx->codec->capabilities & CODEC_CAP_DELAY) && !frame) {
1627 av_free_packet(avpkt);
1628 av_init_packet(avpkt);
1632 /* ensure that extended_data is properly set */
1633 if (frame && !frame->extended_data) {
1634 if (av_sample_fmt_is_planar(avctx->sample_fmt) &&
1635 avctx->channels > AV_NUM_DATA_POINTERS) {
1636 av_log(avctx, AV_LOG_ERROR, "Encoding to a planar sample format, "
1637 "with more than %d channels, but extended_data is not set.\n",
1638 AV_NUM_DATA_POINTERS);
1639 return AVERROR(EINVAL);
1641 av_log(avctx, AV_LOG_WARNING, "extended_data is not set.\n");
1644 tmp.extended_data = tmp.data;
1648 /* check for valid frame size */
1650 if (avctx->codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME) {
1651 if (frame->nb_samples > avctx->frame_size) {
1652 av_log(avctx, AV_LOG_ERROR, "more samples than frame size (avcodec_encode_audio2)\n");
1653 return AVERROR(EINVAL);
1655 } else if (!(avctx->codec->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE)) {
1656 if (frame->nb_samples < avctx->frame_size &&
1657 !avctx->internal->last_audio_frame) {
1658 ret = pad_last_frame(avctx, &padded_frame, frame);
1662 frame = padded_frame;
1663 avctx->internal->last_audio_frame = 1;
1666 if (frame->nb_samples != avctx->frame_size) {
1667 av_log(avctx, AV_LOG_ERROR, "nb_samples (%d) != frame_size (%d) (avcodec_encode_audio2)\n", frame->nb_samples, avctx->frame_size);
1668 ret = AVERROR(EINVAL);
1674 ret = avctx->codec->encode2(avctx, avpkt, frame, got_packet_ptr);
1676 if (*got_packet_ptr) {
1677 if (!(avctx->codec->capabilities & CODEC_CAP_DELAY)) {
1678 if (avpkt->pts == AV_NOPTS_VALUE)
1679 avpkt->pts = frame->pts;
1680 if (!avpkt->duration)
1681 avpkt->duration = ff_samples_to_time_base(avctx,
1684 avpkt->dts = avpkt->pts;
1689 if (avpkt->data && avpkt->data == avctx->internal->byte_buffer) {
1691 if (user_pkt.data) {
1692 if (user_pkt.size >= avpkt->size) {
1693 memcpy(user_pkt.data, avpkt->data, avpkt->size);
1695 av_log(avctx, AV_LOG_ERROR, "Provided packet is too small, needs to be %d\n", avpkt->size);
1696 avpkt->size = user_pkt.size;
1699 avpkt->buf = user_pkt.buf;
1700 avpkt->data = user_pkt.data;
1701 avpkt->destruct = user_pkt.destruct;
1703 if (av_dup_packet(avpkt) < 0) {
1704 ret = AVERROR(ENOMEM);
1710 if (needs_realloc && avpkt->data) {
1711 ret = av_buffer_realloc(&avpkt->buf, avpkt->size + FF_INPUT_BUFFER_PADDING_SIZE);
1713 avpkt->data = avpkt->buf->data;
1716 avctx->frame_number++;
1719 if (ret < 0 || !*got_packet_ptr) {
1720 av_free_packet(avpkt);
1721 av_init_packet(avpkt);
1725 /* NOTE: if we add any audio encoders which output non-keyframe packets,
1726 * this needs to be moved to the encoders, but for now we can do it
1727 * here to simplify things */
1728 avpkt->flags |= AV_PKT_FLAG_KEY;
1731 av_frame_free(&padded_frame);
1736 #if FF_API_OLD_ENCODE_AUDIO
1737 int attribute_align_arg avcodec_encode_audio(AVCodecContext *avctx,
1738 uint8_t *buf, int buf_size,
1739 const short *samples)
1743 int ret, samples_size, got_packet;
1745 av_init_packet(&pkt);
1747 pkt.size = buf_size;
1750 frame = av_frame_alloc();
1752 return AVERROR(ENOMEM);
1754 if (avctx->frame_size) {
1755 frame->nb_samples = avctx->frame_size;
1757 /* if frame_size is not set, the number of samples must be
1758 * calculated from the buffer size */
1760 if (!av_get_bits_per_sample(avctx->codec_id)) {
1761 av_log(avctx, AV_LOG_ERROR, "avcodec_encode_audio() does not "
1762 "support this codec\n");
1763 av_frame_free(&frame);
1764 return AVERROR(EINVAL);
1766 nb_samples = (int64_t)buf_size * 8 /
1767 (av_get_bits_per_sample(avctx->codec_id) *
1769 if (nb_samples >= INT_MAX) {
1770 av_frame_free(&frame);
1771 return AVERROR(EINVAL);
1773 frame->nb_samples = nb_samples;
1776 /* it is assumed that the samples buffer is large enough based on the
1777 * relevant parameters */
1778 samples_size = av_samples_get_buffer_size(NULL, avctx->channels,
1780 avctx->sample_fmt, 1);
1781 if ((ret = avcodec_fill_audio_frame(frame, avctx->channels,
1783 (const uint8_t *)samples,
1784 samples_size, 1)) < 0) {
1785 av_frame_free(&frame);
1789 /* fabricate frame pts from sample count.
1790 * this is needed because the avcodec_encode_audio() API does not have
1791 * a way for the user to provide pts */
1792 if (avctx->sample_rate && avctx->time_base.num)
1793 frame->pts = ff_samples_to_time_base(avctx,
1794 avctx->internal->sample_count);
1796 frame->pts = AV_NOPTS_VALUE;
1797 avctx->internal->sample_count += frame->nb_samples;
1803 ret = avcodec_encode_audio2(avctx, &pkt, frame, &got_packet);
1804 if (!ret && got_packet && avctx->coded_frame) {
1805 avctx->coded_frame->pts = pkt.pts;
1806 avctx->coded_frame->key_frame = !!(pkt.flags & AV_PKT_FLAG_KEY);
1808 /* free any side data since we cannot return it */
1809 av_packet_free_side_data(&pkt);
1811 if (frame && frame->extended_data != frame->data)
1812 av_freep(&frame->extended_data);
1814 av_frame_free(&frame);
1815 return ret ? ret : pkt.size;
1820 #if FF_API_OLD_ENCODE_VIDEO
1821 int attribute_align_arg avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
1822 const AVFrame *pict)
1825 int ret, got_packet = 0;
1827 if (buf_size < FF_MIN_BUFFER_SIZE) {
1828 av_log(avctx, AV_LOG_ERROR, "buffer smaller than minimum size\n");
1832 av_init_packet(&pkt);
1834 pkt.size = buf_size;
1836 ret = avcodec_encode_video2(avctx, &pkt, pict, &got_packet);
1837 if (!ret && got_packet && avctx->coded_frame) {
1838 avctx->coded_frame->pts = pkt.pts;
1839 avctx->coded_frame->key_frame = !!(pkt.flags & AV_PKT_FLAG_KEY);
1842 /* free any side data since we cannot return it */
1843 if (pkt.side_data_elems > 0) {
1845 for (i = 0; i < pkt.side_data_elems; i++)
1846 av_free(pkt.side_data[i].data);
1847 av_freep(&pkt.side_data);
1848 pkt.side_data_elems = 0;
1851 return ret ? ret : pkt.size;
1856 int attribute_align_arg avcodec_encode_video2(AVCodecContext *avctx,
1858 const AVFrame *frame,
1859 int *got_packet_ptr)
1862 AVPacket user_pkt = *avpkt;
1863 int needs_realloc = !user_pkt.data;
1865 *got_packet_ptr = 0;
1867 if(CONFIG_FRAME_THREAD_ENCODER &&
1868 avctx->internal->frame_thread_encoder && (avctx->active_thread_type&FF_THREAD_FRAME))
1869 return ff_thread_video_encode_frame(avctx, avpkt, frame, got_packet_ptr);
1871 if ((avctx->flags&CODEC_FLAG_PASS1) && avctx->stats_out)
1872 avctx->stats_out[0] = '\0';
1874 if (!(avctx->codec->capabilities & CODEC_CAP_DELAY) && !frame) {
1875 av_free_packet(avpkt);
1876 av_init_packet(avpkt);
1881 if (av_image_check_size(avctx->width, avctx->height, 0, avctx))
1882 return AVERROR(EINVAL);
1884 av_assert0(avctx->codec->encode2);
1886 ret = avctx->codec->encode2(avctx, avpkt, frame, got_packet_ptr);
1887 av_assert0(ret <= 0);
1889 if (avpkt->data && avpkt->data == avctx->internal->byte_buffer) {
1891 if (user_pkt.data) {
1892 if (user_pkt.size >= avpkt->size) {
1893 memcpy(user_pkt.data, avpkt->data, avpkt->size);
1895 av_log(avctx, AV_LOG_ERROR, "Provided packet is too small, needs to be %d\n", avpkt->size);
1896 avpkt->size = user_pkt.size;
1899 avpkt->buf = user_pkt.buf;
1900 avpkt->data = user_pkt.data;
1901 avpkt->destruct = user_pkt.destruct;
1903 if (av_dup_packet(avpkt) < 0) {
1904 ret = AVERROR(ENOMEM);
1910 if (!*got_packet_ptr)
1912 else if (!(avctx->codec->capabilities & CODEC_CAP_DELAY))
1913 avpkt->pts = avpkt->dts = frame->pts;
1915 if (needs_realloc && avpkt->data) {
1916 ret = av_buffer_realloc(&avpkt->buf, avpkt->size + FF_INPUT_BUFFER_PADDING_SIZE);
1918 avpkt->data = avpkt->buf->data;
1921 avctx->frame_number++;
1924 if (ret < 0 || !*got_packet_ptr)
1925 av_free_packet(avpkt);
1927 av_packet_merge_side_data(avpkt);
1933 int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size,
1934 const AVSubtitle *sub)
1937 if (sub->start_display_time) {
1938 av_log(avctx, AV_LOG_ERROR, "start_display_time must be 0.\n");
1942 ret = avctx->codec->encode_sub(avctx, buf, buf_size, sub);
1943 avctx->frame_number++;
1948 * Attempt to guess proper monotonic timestamps for decoded video frames
1949 * which might have incorrect times. Input timestamps may wrap around, in
1950 * which case the output will as well.
1952 * @param pts the pts field of the decoded AVPacket, as passed through
1954 * @param dts the dts field of the decoded AVPacket
1955 * @return one of the input values, may be AV_NOPTS_VALUE
1957 static int64_t guess_correct_pts(AVCodecContext *ctx,
1958 int64_t reordered_pts, int64_t dts)
1960 int64_t pts = AV_NOPTS_VALUE;
1962 if (dts != AV_NOPTS_VALUE) {
1963 ctx->pts_correction_num_faulty_dts += dts <= ctx->pts_correction_last_dts;
1964 ctx->pts_correction_last_dts = dts;
1965 } else if (reordered_pts != AV_NOPTS_VALUE)
1966 ctx->pts_correction_last_dts = reordered_pts;
1968 if (reordered_pts != AV_NOPTS_VALUE) {
1969 ctx->pts_correction_num_faulty_pts += reordered_pts <= ctx->pts_correction_last_pts;
1970 ctx->pts_correction_last_pts = reordered_pts;
1971 } else if(dts != AV_NOPTS_VALUE)
1972 ctx->pts_correction_last_pts = dts;
1974 if ((ctx->pts_correction_num_faulty_pts<=ctx->pts_correction_num_faulty_dts || dts == AV_NOPTS_VALUE)
1975 && reordered_pts != AV_NOPTS_VALUE)
1976 pts = reordered_pts;
1983 static int apply_param_change(AVCodecContext *avctx, AVPacket *avpkt)
1986 const uint8_t *data;
1989 data = av_packet_get_side_data(avpkt, AV_PKT_DATA_PARAM_CHANGE, &size);
1993 if (!(avctx->codec->capabilities & CODEC_CAP_PARAM_CHANGE)) {
1994 av_log(avctx, AV_LOG_ERROR, "This decoder does not support parameter "
1995 "changes, but PARAM_CHANGE side data was sent to it.\n");
1996 return AVERROR(EINVAL);
2002 flags = bytestream_get_le32(&data);
2005 if (flags & AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_COUNT) {
2008 avctx->channels = bytestream_get_le32(&data);
2011 if (flags & AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_LAYOUT) {
2014 avctx->channel_layout = bytestream_get_le64(&data);
2017 if (flags & AV_SIDE_DATA_PARAM_CHANGE_SAMPLE_RATE) {
2020 avctx->sample_rate = bytestream_get_le32(&data);
2023 if (flags & AV_SIDE_DATA_PARAM_CHANGE_DIMENSIONS) {
2026 avctx->width = bytestream_get_le32(&data);
2027 avctx->height = bytestream_get_le32(&data);
2029 ret = ff_set_dimensions(avctx, avctx->width, avctx->height);
2036 av_log(avctx, AV_LOG_ERROR, "PARAM_CHANGE side data too small.\n");
2037 return AVERROR_INVALIDDATA;
2040 static int add_metadata_from_side_data(AVCodecContext *avctx, AVFrame *frame)
2043 const uint8_t *side_metadata;
2045 AVDictionary **frame_md = avpriv_frame_get_metadatap(frame);
2047 side_metadata = av_packet_get_side_data(avctx->internal->pkt,
2048 AV_PKT_DATA_STRINGS_METADATA, &size);
2049 return av_packet_unpack_dictionary(side_metadata, size, frame_md);
2052 static int unrefcount_frame(AVCodecInternal *avci, AVFrame *frame)
2056 /* move the original frame to our backup */
2057 av_frame_unref(avci->to_free);
2058 av_frame_move_ref(avci->to_free, frame);
2060 /* now copy everything except the AVBufferRefs back
2061 * note that we make a COPY of the side data, so calling av_frame_free() on
2062 * the caller's frame will work properly */
2063 ret = av_frame_copy_props(frame, avci->to_free);
2067 memcpy(frame->data, avci->to_free->data, sizeof(frame->data));
2068 memcpy(frame->linesize, avci->to_free->linesize, sizeof(frame->linesize));
2069 if (avci->to_free->extended_data != avci->to_free->data) {
2070 int planes = av_frame_get_channels(avci->to_free);
2071 int size = planes * sizeof(*frame->extended_data);
2074 av_frame_unref(frame);
2078 frame->extended_data = av_malloc(size);
2079 if (!frame->extended_data) {
2080 av_frame_unref(frame);
2081 return AVERROR(ENOMEM);
2083 memcpy(frame->extended_data, avci->to_free->extended_data,
2086 frame->extended_data = frame->data;
2088 frame->format = avci->to_free->format;
2089 frame->width = avci->to_free->width;
2090 frame->height = avci->to_free->height;
2091 frame->channel_layout = avci->to_free->channel_layout;
2092 frame->nb_samples = avci->to_free->nb_samples;
2093 av_frame_set_channels(frame, av_frame_get_channels(avci->to_free));
2098 int attribute_align_arg avcodec_decode_video2(AVCodecContext *avctx, AVFrame *picture,
2099 int *got_picture_ptr,
2100 const AVPacket *avpkt)
2102 AVCodecInternal *avci = avctx->internal;
2104 // copy to ensure we do not change avpkt
2105 AVPacket tmp = *avpkt;
2108 return AVERROR(EINVAL);
2109 if (avctx->codec->type != AVMEDIA_TYPE_VIDEO) {
2110 av_log(avctx, AV_LOG_ERROR, "Invalid media type for video\n");
2111 return AVERROR(EINVAL);
2114 *got_picture_ptr = 0;
2115 if ((avctx->coded_width || avctx->coded_height) && av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx))
2116 return AVERROR(EINVAL);
2118 av_frame_unref(picture);
2120 if ((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size || (avctx->active_thread_type & FF_THREAD_FRAME)) {
2121 int did_split = av_packet_split_side_data(&tmp);
2122 ret = apply_param_change(avctx, &tmp);
2124 av_log(avctx, AV_LOG_ERROR, "Error applying parameter changes.\n");
2125 if (avctx->err_recognition & AV_EF_EXPLODE)
2129 avctx->internal->pkt = &tmp;
2130 if (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME)
2131 ret = ff_thread_decode_frame(avctx, picture, got_picture_ptr,
2134 ret = avctx->codec->decode(avctx, picture, got_picture_ptr,
2136 picture->pkt_dts = avpkt->dts;
2138 if(!avctx->has_b_frames){
2139 av_frame_set_pkt_pos(picture, avpkt->pos);
2141 //FIXME these should be under if(!avctx->has_b_frames)
2142 /* get_buffer is supposed to set frame parameters */
2143 if (!(avctx->codec->capabilities & CODEC_CAP_DR1)) {
2144 if (!picture->sample_aspect_ratio.num) picture->sample_aspect_ratio = avctx->sample_aspect_ratio;
2145 if (!picture->width) picture->width = avctx->width;
2146 if (!picture->height) picture->height = avctx->height;
2147 if (picture->format == AV_PIX_FMT_NONE) picture->format = avctx->pix_fmt;
2150 add_metadata_from_side_data(avctx, picture);
2153 emms_c(); //needed to avoid an emms_c() call before every return;
2155 avctx->internal->pkt = NULL;
2157 av_packet_free_side_data(&tmp);
2162 if (*got_picture_ptr) {
2163 if (!avctx->refcounted_frames) {
2164 int err = unrefcount_frame(avci, picture);
2169 avctx->frame_number++;
2170 av_frame_set_best_effort_timestamp(picture,
2171 guess_correct_pts(avctx,
2175 av_frame_unref(picture);
2179 /* many decoders assign whole AVFrames, thus overwriting extended_data;
2180 * make sure it's set correctly */
2181 av_assert0(!picture->extended_data || picture->extended_data == picture->data);
2186 #if FF_API_OLD_DECODE_AUDIO
2187 int attribute_align_arg avcodec_decode_audio3(AVCodecContext *avctx, int16_t *samples,
2188 int *frame_size_ptr,
2191 AVFrame *frame = av_frame_alloc();
2192 int ret, got_frame = 0;
2195 return AVERROR(ENOMEM);
2196 if (avctx->get_buffer != avcodec_default_get_buffer) {
2197 av_log(avctx, AV_LOG_ERROR, "Custom get_buffer() for use with"
2198 "avcodec_decode_audio3() detected. Overriding with avcodec_default_get_buffer\n");
2199 av_log(avctx, AV_LOG_ERROR, "Please port your application to "
2200 "avcodec_decode_audio4()\n");
2201 avctx->get_buffer = avcodec_default_get_buffer;
2202 avctx->release_buffer = avcodec_default_release_buffer;
2205 ret = avcodec_decode_audio4(avctx, frame, &got_frame, avpkt);
2207 if (ret >= 0 && got_frame) {
2209 int planar = av_sample_fmt_is_planar(avctx->sample_fmt);
2210 int data_size = av_samples_get_buffer_size(&plane_size, avctx->channels,
2212 avctx->sample_fmt, 1);
2213 if (*frame_size_ptr < data_size) {
2214 av_log(avctx, AV_LOG_ERROR, "output buffer size is too small for "
2215 "the current frame (%d < %d)\n", *frame_size_ptr, data_size);
2216 av_frame_free(&frame);
2217 return AVERROR(EINVAL);
2220 memcpy(samples, frame->extended_data[0], plane_size);
2222 if (planar && avctx->channels > 1) {
2223 uint8_t *out = ((uint8_t *)samples) + plane_size;
2224 for (ch = 1; ch < avctx->channels; ch++) {
2225 memcpy(out, frame->extended_data[ch], plane_size);
2229 *frame_size_ptr = data_size;
2231 *frame_size_ptr = 0;
2233 av_frame_free(&frame);
2239 int attribute_align_arg avcodec_decode_audio4(AVCodecContext *avctx,
2242 const AVPacket *avpkt)
2244 AVCodecInternal *avci = avctx->internal;
2249 if (!avpkt->data && avpkt->size) {
2250 av_log(avctx, AV_LOG_ERROR, "invalid packet: NULL data, size != 0\n");
2251 return AVERROR(EINVAL);
2254 return AVERROR(EINVAL);
2255 if (avctx->codec->type != AVMEDIA_TYPE_AUDIO) {
2256 av_log(avctx, AV_LOG_ERROR, "Invalid media type for audio\n");
2257 return AVERROR(EINVAL);
2260 av_frame_unref(frame);
2262 if ((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size || (avctx->active_thread_type & FF_THREAD_FRAME)) {
2265 uint32_t discard_padding = 0;
2266 // copy to ensure we do not change avpkt
2267 AVPacket tmp = *avpkt;
2268 int did_split = av_packet_split_side_data(&tmp);
2269 ret = apply_param_change(avctx, &tmp);
2271 av_log(avctx, AV_LOG_ERROR, "Error applying parameter changes.\n");
2272 if (avctx->err_recognition & AV_EF_EXPLODE)
2276 avctx->internal->pkt = &tmp;
2277 if (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME)
2278 ret = ff_thread_decode_frame(avctx, frame, got_frame_ptr, &tmp);
2280 ret = avctx->codec->decode(avctx, frame, got_frame_ptr, &tmp);
2281 frame->pkt_dts = avpkt->dts;
2283 if (ret >= 0 && *got_frame_ptr) {
2284 add_metadata_from_side_data(avctx, frame);
2285 avctx->frame_number++;
2286 av_frame_set_best_effort_timestamp(frame,
2287 guess_correct_pts(avctx,
2290 if (frame->format == AV_SAMPLE_FMT_NONE)
2291 frame->format = avctx->sample_fmt;
2292 if (!frame->channel_layout)
2293 frame->channel_layout = avctx->channel_layout;
2294 if (!av_frame_get_channels(frame))
2295 av_frame_set_channels(frame, avctx->channels);
2296 if (!frame->sample_rate)
2297 frame->sample_rate = avctx->sample_rate;
2300 side= av_packet_get_side_data(avctx->internal->pkt, AV_PKT_DATA_SKIP_SAMPLES, &side_size);
2301 if(side && side_size>=10) {
2302 avctx->internal->skip_samples = AV_RL32(side);
2303 av_log(avctx, AV_LOG_DEBUG, "skip %d samples due to side data\n",
2304 avctx->internal->skip_samples);
2305 discard_padding = AV_RL32(side + 4);
2307 if (avctx->internal->skip_samples && *got_frame_ptr) {
2308 if(frame->nb_samples <= avctx->internal->skip_samples){
2310 avctx->internal->skip_samples -= frame->nb_samples;
2311 av_log(avctx, AV_LOG_DEBUG, "skip whole frame, skip left: %d\n",
2312 avctx->internal->skip_samples);
2314 av_samples_copy(frame->extended_data, frame->extended_data, 0, avctx->internal->skip_samples,
2315 frame->nb_samples - avctx->internal->skip_samples, avctx->channels, frame->format);
2316 if(avctx->pkt_timebase.num && avctx->sample_rate) {
2317 int64_t diff_ts = av_rescale_q(avctx->internal->skip_samples,
2318 (AVRational){1, avctx->sample_rate},
2319 avctx->pkt_timebase);
2320 if(frame->pkt_pts!=AV_NOPTS_VALUE)
2321 frame->pkt_pts += diff_ts;
2322 if(frame->pkt_dts!=AV_NOPTS_VALUE)
2323 frame->pkt_dts += diff_ts;
2324 if (av_frame_get_pkt_duration(frame) >= diff_ts)
2325 av_frame_set_pkt_duration(frame, av_frame_get_pkt_duration(frame) - diff_ts);
2327 av_log(avctx, AV_LOG_WARNING, "Could not update timestamps for skipped samples.\n");
2329 av_log(avctx, AV_LOG_DEBUG, "skip %d/%d samples\n",
2330 avctx->internal->skip_samples, frame->nb_samples);
2331 frame->nb_samples -= avctx->internal->skip_samples;
2332 avctx->internal->skip_samples = 0;
2336 if (discard_padding > 0 && discard_padding <= frame->nb_samples && *got_frame_ptr) {
2337 if (discard_padding == frame->nb_samples) {
2340 if(avctx->pkt_timebase.num && avctx->sample_rate) {
2341 int64_t diff_ts = av_rescale_q(frame->nb_samples - discard_padding,
2342 (AVRational){1, avctx->sample_rate},
2343 avctx->pkt_timebase);
2344 if (av_frame_get_pkt_duration(frame) >= diff_ts)
2345 av_frame_set_pkt_duration(frame, av_frame_get_pkt_duration(frame) - diff_ts);
2347 av_log(avctx, AV_LOG_WARNING, "Could not update timestamps for discarded samples.\n");
2349 av_log(avctx, AV_LOG_DEBUG, "discard %d/%d samples\n",
2350 discard_padding, frame->nb_samples);
2351 frame->nb_samples -= discard_padding;
2355 avctx->internal->pkt = NULL;
2357 av_packet_free_side_data(&tmp);
2362 if (ret >= 0 && *got_frame_ptr) {
2363 if (!avctx->refcounted_frames) {
2364 int err = unrefcount_frame(avci, frame);
2369 av_frame_unref(frame);
2375 #define UTF8_MAX_BYTES 4 /* 5 and 6 bytes sequences should not be used */
2376 static int recode_subtitle(AVCodecContext *avctx,
2377 AVPacket *outpkt, const AVPacket *inpkt)
2380 iconv_t cd = (iconv_t)-1;
2387 if (avctx->sub_charenc_mode != FF_SUB_CHARENC_MODE_PRE_DECODER || inpkt->size == 0)
2391 cd = iconv_open("UTF-8", avctx->sub_charenc);
2392 av_assert0(cd != (iconv_t)-1);
2397 if (inl >= INT_MAX / UTF8_MAX_BYTES - FF_INPUT_BUFFER_PADDING_SIZE) {
2398 av_log(avctx, AV_LOG_ERROR, "Subtitles packet is too big for recoding\n");
2399 ret = AVERROR(ENOMEM);
2403 ret = av_new_packet(&tmp, inl * UTF8_MAX_BYTES);
2406 outpkt->buf = tmp.buf;
2407 outpkt->data = tmp.data;
2408 outpkt->size = tmp.size;
2409 outb = outpkt->data;
2410 outl = outpkt->size;
2412 if (iconv(cd, &inb, &inl, &outb, &outl) == (size_t)-1 ||
2413 iconv(cd, NULL, NULL, &outb, &outl) == (size_t)-1 ||
2414 outl >= outpkt->size || inl != 0) {
2415 av_log(avctx, AV_LOG_ERROR, "Unable to recode subtitle event \"%s\" "
2416 "from %s to UTF-8\n", inpkt->data, avctx->sub_charenc);
2417 av_free_packet(&tmp);
2418 ret = AVERROR(errno);
2421 outpkt->size -= outl;
2422 memset(outpkt->data + outpkt->size, 0, outl);
2425 if (cd != (iconv_t)-1)
2429 av_assert0(!"requesting subtitles recoding without iconv");
2433 static int utf8_check(const uint8_t *str)
2435 const uint8_t *byte;
2436 uint32_t codepoint, min;
2440 GET_UTF8(codepoint, *(byte++), return 0;);
2441 min = byte - str == 1 ? 0 : byte - str == 2 ? 0x80 :
2442 1 << (5 * (byte - str) - 4);
2443 if (codepoint < min || codepoint >= 0x110000 ||
2444 codepoint == 0xFFFE /* BOM */ ||
2445 codepoint >= 0xD800 && codepoint <= 0xDFFF /* surrogates */)
2452 int avcodec_decode_subtitle2(AVCodecContext *avctx, AVSubtitle *sub,
2458 if (!avpkt->data && avpkt->size) {
2459 av_log(avctx, AV_LOG_ERROR, "invalid packet: NULL data, size != 0\n");
2460 return AVERROR(EINVAL);
2463 return AVERROR(EINVAL);
2464 if (avctx->codec->type != AVMEDIA_TYPE_SUBTITLE) {
2465 av_log(avctx, AV_LOG_ERROR, "Invalid media type for subtitles\n");
2466 return AVERROR(EINVAL);
2470 avcodec_get_subtitle_defaults(sub);
2472 if ((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size) {
2473 AVPacket pkt_recoded;
2474 AVPacket tmp = *avpkt;
2475 int did_split = av_packet_split_side_data(&tmp);
2476 //apply_param_change(avctx, &tmp);
2479 /* FFMIN() prevents overflow in case the packet wasn't allocated with
2481 * If the side data is smaller than the buffer padding size, the
2482 * remaining bytes should have already been filled with zeros by the
2483 * original packet allocation anyway. */
2484 memset(tmp.data + tmp.size, 0,
2485 FFMIN(avpkt->size - tmp.size, FF_INPUT_BUFFER_PADDING_SIZE));
2489 ret = recode_subtitle(avctx, &pkt_recoded, &tmp);
2493 avctx->internal->pkt = &pkt_recoded;
2495 if (avctx->pkt_timebase.den && avpkt->pts != AV_NOPTS_VALUE)
2496 sub->pts = av_rescale_q(avpkt->pts,
2497 avctx->pkt_timebase, AV_TIME_BASE_Q);
2498 ret = avctx->codec->decode(avctx, sub, got_sub_ptr, &pkt_recoded);
2499 av_assert1((ret >= 0) >= !!*got_sub_ptr &&
2500 !!*got_sub_ptr >= !!sub->num_rects);
2502 if (sub->num_rects && !sub->end_display_time && avpkt->duration &&
2503 avctx->pkt_timebase.num) {
2504 AVRational ms = { 1, 1000 };
2505 sub->end_display_time = av_rescale_q(avpkt->duration,
2506 avctx->pkt_timebase, ms);
2509 for (i = 0; i < sub->num_rects; i++) {
2510 if (sub->rects[i]->ass && !utf8_check(sub->rects[i]->ass)) {
2511 av_log(avctx, AV_LOG_ERROR,
2512 "Invalid UTF-8 in decoded subtitles text; "
2513 "maybe missing -sub_charenc option\n");
2514 avsubtitle_free(sub);
2515 return AVERROR_INVALIDDATA;
2519 if (tmp.data != pkt_recoded.data) { // did we recode?
2520 /* prevent from destroying side data from original packet */
2521 pkt_recoded.side_data = NULL;
2522 pkt_recoded.side_data_elems = 0;
2524 av_free_packet(&pkt_recoded);
2526 if (avctx->codec_descriptor->props & AV_CODEC_PROP_BITMAP_SUB)
2528 else if (avctx->codec_descriptor->props & AV_CODEC_PROP_TEXT_SUB)
2530 avctx->internal->pkt = NULL;
2534 av_packet_free_side_data(&tmp);
2540 avctx->frame_number++;
2546 void avsubtitle_free(AVSubtitle *sub)
2550 for (i = 0; i < sub->num_rects; i++) {
2551 av_freep(&sub->rects[i]->pict.data[0]);
2552 av_freep(&sub->rects[i]->pict.data[1]);
2553 av_freep(&sub->rects[i]->pict.data[2]);
2554 av_freep(&sub->rects[i]->pict.data[3]);
2555 av_freep(&sub->rects[i]->text);
2556 av_freep(&sub->rects[i]->ass);
2557 av_freep(&sub->rects[i]);
2560 av_freep(&sub->rects);
2562 memset(sub, 0, sizeof(AVSubtitle));
2565 av_cold int ff_codec_close_recursive(AVCodecContext *avctx)
2569 ff_unlock_avcodec();
2571 ret = avcodec_close(avctx);
2573 ff_lock_avcodec(NULL);
2577 av_cold int avcodec_close(AVCodecContext *avctx)
2584 ret = ff_lock_avcodec(avctx);
2588 if (avcodec_is_open(avctx)) {
2589 FramePool *pool = avctx->internal->pool;
2591 if (CONFIG_FRAME_THREAD_ENCODER &&
2592 avctx->internal->frame_thread_encoder && avctx->thread_count > 1) {
2593 ff_unlock_avcodec();
2594 ff_frame_thread_encoder_free(avctx);
2595 ff_lock_avcodec(avctx);
2597 if (HAVE_THREADS && avctx->internal->thread_ctx)
2598 ff_thread_free(avctx);
2599 if (avctx->codec && avctx->codec->close)
2600 avctx->codec->close(avctx);
2601 avctx->coded_frame = NULL;
2602 avctx->internal->byte_buffer_size = 0;
2603 av_freep(&avctx->internal->byte_buffer);
2604 av_frame_free(&avctx->internal->to_free);
2605 for (i = 0; i < FF_ARRAY_ELEMS(pool->pools); i++)
2606 av_buffer_pool_uninit(&pool->pools[i]);
2607 av_freep(&avctx->internal->pool);
2608 av_freep(&avctx->internal);
2611 if (avctx->priv_data && avctx->codec && avctx->codec->priv_class)
2612 av_opt_free(avctx->priv_data);
2614 av_freep(&avctx->priv_data);
2615 if (av_codec_is_encoder(avctx->codec))
2616 av_freep(&avctx->extradata);
2617 avctx->codec = NULL;
2618 avctx->active_thread_type = 0;
2620 ff_unlock_avcodec();
2624 static enum AVCodecID remap_deprecated_codec_id(enum AVCodecID id)
2627 //This is for future deprecatec codec ids, its empty since
2628 //last major bump but will fill up again over time, please don't remove it
2629 // case AV_CODEC_ID_UTVIDEO_DEPRECATED: return AV_CODEC_ID_UTVIDEO;
2630 case AV_CODEC_ID_OPUS_DEPRECATED: return AV_CODEC_ID_OPUS;
2631 case AV_CODEC_ID_TAK_DEPRECATED : return AV_CODEC_ID_TAK;
2632 case AV_CODEC_ID_PCM_S24LE_PLANAR_DEPRECATED : return AV_CODEC_ID_PCM_S24LE_PLANAR;
2633 case AV_CODEC_ID_PCM_S32LE_PLANAR_DEPRECATED : return AV_CODEC_ID_PCM_S32LE_PLANAR;
2634 case AV_CODEC_ID_ESCAPE130_DEPRECATED : return AV_CODEC_ID_ESCAPE130;
2635 case AV_CODEC_ID_G2M_DEPRECATED : return AV_CODEC_ID_G2M;
2636 case AV_CODEC_ID_WEBP_DEPRECATED: return AV_CODEC_ID_WEBP;
2637 case AV_CODEC_ID_HEVC_DEPRECATED: return AV_CODEC_ID_HEVC;
2638 default : return id;
2642 static AVCodec *find_encdec(enum AVCodecID id, int encoder)
2644 AVCodec *p, *experimental = NULL;
2646 id= remap_deprecated_codec_id(id);
2648 if ((encoder ? av_codec_is_encoder(p) : av_codec_is_decoder(p)) &&
2650 if (p->capabilities & CODEC_CAP_EXPERIMENTAL && !experimental) {
2657 return experimental;
2660 AVCodec *avcodec_find_encoder(enum AVCodecID id)
2662 return find_encdec(id, 1);
2665 AVCodec *avcodec_find_encoder_by_name(const char *name)
2672 if (av_codec_is_encoder(p) && strcmp(name, p->name) == 0)
2679 AVCodec *avcodec_find_decoder(enum AVCodecID id)
2681 return find_encdec(id, 0);
2684 AVCodec *avcodec_find_decoder_by_name(const char *name)
2691 if (av_codec_is_decoder(p) && strcmp(name, p->name) == 0)
2698 const char *avcodec_get_name(enum AVCodecID id)
2700 const AVCodecDescriptor *cd;
2703 if (id == AV_CODEC_ID_NONE)
2705 cd = avcodec_descriptor_get(id);
2708 av_log(NULL, AV_LOG_WARNING, "Codec 0x%x is not in the full list.\n", id);
2709 codec = avcodec_find_decoder(id);
2712 codec = avcodec_find_encoder(id);
2715 return "unknown_codec";
2718 size_t av_get_codec_tag_string(char *buf, size_t buf_size, unsigned int codec_tag)
2720 int i, len, ret = 0;
2722 #define TAG_PRINT(x) \
2723 (((x) >= '0' && (x) <= '9') || \
2724 ((x) >= 'a' && (x) <= 'z') || ((x) >= 'A' && (x) <= 'Z') || \
2725 ((x) == '.' || (x) == ' ' || (x) == '-' || (x) == '_'))
2727 for (i = 0; i < 4; i++) {
2728 len = snprintf(buf, buf_size,
2729 TAG_PRINT(codec_tag & 0xFF) ? "%c" : "[%d]", codec_tag & 0xFF);
2731 buf_size = buf_size > len ? buf_size - len : 0;
2738 void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)
2740 const char *codec_type;
2741 const char *codec_name;
2742 const char *profile = NULL;
2745 AVRational display_aspect_ratio;
2747 if (!buf || buf_size <= 0)
2749 codec_type = av_get_media_type_string(enc->codec_type);
2750 codec_name = avcodec_get_name(enc->codec_id);
2751 if (enc->profile != FF_PROFILE_UNKNOWN) {
2755 p = encode ? avcodec_find_encoder(enc->codec_id) :
2756 avcodec_find_decoder(enc->codec_id);
2758 profile = av_get_profile_name(p, enc->profile);
2761 snprintf(buf, buf_size, "%s: %s", codec_type ? codec_type : "unknown",
2763 buf[0] ^= 'a' ^ 'A'; /* first letter in uppercase */
2765 if (enc->codec && strcmp(enc->codec->name, codec_name))
2766 snprintf(buf + strlen(buf), buf_size - strlen(buf), " (%s)", enc->codec->name);
2769 snprintf(buf + strlen(buf), buf_size - strlen(buf), " (%s)", profile);
2770 if (enc->codec_tag) {
2772 av_get_codec_tag_string(tag_buf, sizeof(tag_buf), enc->codec_tag);
2773 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2774 " (%s / 0x%04X)", tag_buf, enc->codec_tag);
2777 switch (enc->codec_type) {
2778 case AVMEDIA_TYPE_VIDEO:
2779 if (enc->pix_fmt != AV_PIX_FMT_NONE) {
2780 char detail[256] = "(";
2781 const char *colorspace_name;
2782 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2784 av_get_pix_fmt_name(enc->pix_fmt));
2785 if (enc->bits_per_raw_sample &&
2786 enc->bits_per_raw_sample <= av_pix_fmt_desc_get(enc->pix_fmt)->comp[0].depth_minus1)
2787 av_strlcatf(detail, sizeof(detail), "%d bpc, ", enc->bits_per_raw_sample);
2788 if (enc->color_range != AVCOL_RANGE_UNSPECIFIED)
2789 av_strlcatf(detail, sizeof(detail),
2790 enc->color_range == AVCOL_RANGE_MPEG ? "tv, ": "pc, ");
2792 colorspace_name = av_get_colorspace_name(enc->colorspace);
2793 if (colorspace_name)
2794 av_strlcatf(detail, sizeof(detail), "%s, ", colorspace_name);
2796 if (strlen(detail) > 1) {
2797 detail[strlen(detail) - 2] = 0;
2798 av_strlcatf(buf, buf_size, "%s)", detail);
2802 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2804 enc->width, enc->height);
2805 if (enc->sample_aspect_ratio.num) {
2806 av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
2807 enc->width * enc->sample_aspect_ratio.num,
2808 enc->height * enc->sample_aspect_ratio.den,
2810 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2811 " [SAR %d:%d DAR %d:%d]",
2812 enc->sample_aspect_ratio.num, enc->sample_aspect_ratio.den,
2813 display_aspect_ratio.num, display_aspect_ratio.den);
2815 if (av_log_get_level() >= AV_LOG_DEBUG) {
2816 int g = av_gcd(enc->time_base.num, enc->time_base.den);
2817 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2819 enc->time_base.num / g, enc->time_base.den / g);
2823 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2824 ", q=%d-%d", enc->qmin, enc->qmax);
2827 case AVMEDIA_TYPE_AUDIO:
2828 if (enc->sample_rate) {
2829 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2830 ", %d Hz", enc->sample_rate);
2832 av_strlcat(buf, ", ", buf_size);
2833 av_get_channel_layout_string(buf + strlen(buf), buf_size - strlen(buf), enc->channels, enc->channel_layout);
2834 if (enc->sample_fmt != AV_SAMPLE_FMT_NONE) {
2835 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2836 ", %s", av_get_sample_fmt_name(enc->sample_fmt));
2839 case AVMEDIA_TYPE_DATA:
2840 if (av_log_get_level() >= AV_LOG_DEBUG) {
2841 int g = av_gcd(enc->time_base.num, enc->time_base.den);
2843 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2845 enc->time_base.num / g, enc->time_base.den / g);
2848 case AVMEDIA_TYPE_SUBTITLE:
2850 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2851 ", %dx%d", enc->width, enc->height);
2857 if (enc->flags & CODEC_FLAG_PASS1)
2858 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2860 if (enc->flags & CODEC_FLAG_PASS2)
2861 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2864 bitrate = get_bit_rate(enc);
2866 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2867 ", %d kb/s", bitrate / 1000);
2868 } else if (enc->rc_max_rate > 0) {
2869 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2870 ", max. %d kb/s", enc->rc_max_rate / 1000);
2874 const char *av_get_profile_name(const AVCodec *codec, int profile)
2877 if (profile == FF_PROFILE_UNKNOWN || !codec->profiles)
2880 for (p = codec->profiles; p->profile != FF_PROFILE_UNKNOWN; p++)
2881 if (p->profile == profile)
2887 unsigned avcodec_version(void)
2889 // av_assert0(AV_CODEC_ID_V410==164);
2890 av_assert0(AV_CODEC_ID_PCM_S8_PLANAR==65563);
2891 av_assert0(AV_CODEC_ID_ADPCM_G722==69660);
2892 // av_assert0(AV_CODEC_ID_BMV_AUDIO==86071);
2893 av_assert0(AV_CODEC_ID_SRT==94216);
2894 av_assert0(LIBAVCODEC_VERSION_MICRO >= 100);
2896 av_assert0(CODEC_ID_CLLC == AV_CODEC_ID_CLLC);
2897 av_assert0(CODEC_ID_PCM_S8_PLANAR == AV_CODEC_ID_PCM_S8_PLANAR);
2898 av_assert0(CODEC_ID_ADPCM_IMA_APC == AV_CODEC_ID_ADPCM_IMA_APC);
2899 av_assert0(CODEC_ID_ILBC == AV_CODEC_ID_ILBC);
2900 av_assert0(CODEC_ID_SRT == AV_CODEC_ID_SRT);
2901 return LIBAVCODEC_VERSION_INT;
2904 const char *avcodec_configuration(void)
2906 return FFMPEG_CONFIGURATION;
2909 const char *avcodec_license(void)
2911 #define LICENSE_PREFIX "libavcodec license: "
2912 return LICENSE_PREFIX FFMPEG_LICENSE + sizeof(LICENSE_PREFIX) - 1;
2915 void avcodec_flush_buffers(AVCodecContext *avctx)
2917 if (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME)
2918 ff_thread_flush(avctx);
2919 else if (avctx->codec->flush)
2920 avctx->codec->flush(avctx);
2922 avctx->pts_correction_last_pts =
2923 avctx->pts_correction_last_dts = INT64_MIN;
2925 if (!avctx->refcounted_frames)
2926 av_frame_unref(avctx->internal->to_free);
2929 int av_get_exact_bits_per_sample(enum AVCodecID codec_id)
2932 case AV_CODEC_ID_8SVX_EXP:
2933 case AV_CODEC_ID_8SVX_FIB:
2934 case AV_CODEC_ID_ADPCM_CT:
2935 case AV_CODEC_ID_ADPCM_IMA_APC:
2936 case AV_CODEC_ID_ADPCM_IMA_EA_SEAD:
2937 case AV_CODEC_ID_ADPCM_IMA_OKI:
2938 case AV_CODEC_ID_ADPCM_IMA_WS:
2939 case AV_CODEC_ID_ADPCM_G722:
2940 case AV_CODEC_ID_ADPCM_YAMAHA:
2942 case AV_CODEC_ID_PCM_ALAW:
2943 case AV_CODEC_ID_PCM_MULAW:
2944 case AV_CODEC_ID_PCM_S8:
2945 case AV_CODEC_ID_PCM_S8_PLANAR:
2946 case AV_CODEC_ID_PCM_U8:
2947 case AV_CODEC_ID_PCM_ZORK:
2949 case AV_CODEC_ID_PCM_S16BE:
2950 case AV_CODEC_ID_PCM_S16BE_PLANAR:
2951 case AV_CODEC_ID_PCM_S16LE:
2952 case AV_CODEC_ID_PCM_S16LE_PLANAR:
2953 case AV_CODEC_ID_PCM_U16BE:
2954 case AV_CODEC_ID_PCM_U16LE:
2956 case AV_CODEC_ID_PCM_S24DAUD:
2957 case AV_CODEC_ID_PCM_S24BE:
2958 case AV_CODEC_ID_PCM_S24LE:
2959 case AV_CODEC_ID_PCM_S24LE_PLANAR:
2960 case AV_CODEC_ID_PCM_U24BE:
2961 case AV_CODEC_ID_PCM_U24LE:
2963 case AV_CODEC_ID_PCM_S32BE:
2964 case AV_CODEC_ID_PCM_S32LE:
2965 case AV_CODEC_ID_PCM_S32LE_PLANAR:
2966 case AV_CODEC_ID_PCM_U32BE:
2967 case AV_CODEC_ID_PCM_U32LE:
2968 case AV_CODEC_ID_PCM_F32BE:
2969 case AV_CODEC_ID_PCM_F32LE:
2971 case AV_CODEC_ID_PCM_F64BE:
2972 case AV_CODEC_ID_PCM_F64LE:
2979 enum AVCodecID av_get_pcm_codec(enum AVSampleFormat fmt, int be)
2981 static const enum AVCodecID map[AV_SAMPLE_FMT_NB][2] = {
2982 [AV_SAMPLE_FMT_U8 ] = { AV_CODEC_ID_PCM_U8, AV_CODEC_ID_PCM_U8 },
2983 [AV_SAMPLE_FMT_S16 ] = { AV_CODEC_ID_PCM_S16LE, AV_CODEC_ID_PCM_S16BE },
2984 [AV_SAMPLE_FMT_S32 ] = { AV_CODEC_ID_PCM_S32LE, AV_CODEC_ID_PCM_S32BE },
2985 [AV_SAMPLE_FMT_FLT ] = { AV_CODEC_ID_PCM_F32LE, AV_CODEC_ID_PCM_F32BE },
2986 [AV_SAMPLE_FMT_DBL ] = { AV_CODEC_ID_PCM_F64LE, AV_CODEC_ID_PCM_F64BE },
2987 [AV_SAMPLE_FMT_U8P ] = { AV_CODEC_ID_PCM_U8, AV_CODEC_ID_PCM_U8 },
2988 [AV_SAMPLE_FMT_S16P] = { AV_CODEC_ID_PCM_S16LE, AV_CODEC_ID_PCM_S16BE },
2989 [AV_SAMPLE_FMT_S32P] = { AV_CODEC_ID_PCM_S32LE, AV_CODEC_ID_PCM_S32BE },
2990 [AV_SAMPLE_FMT_FLTP] = { AV_CODEC_ID_PCM_F32LE, AV_CODEC_ID_PCM_F32BE },
2991 [AV_SAMPLE_FMT_DBLP] = { AV_CODEC_ID_PCM_F64LE, AV_CODEC_ID_PCM_F64BE },
2993 if (fmt < 0 || fmt >= AV_SAMPLE_FMT_NB)
2994 return AV_CODEC_ID_NONE;
2995 if (be < 0 || be > 1)
2997 return map[fmt][be];
3000 int av_get_bits_per_sample(enum AVCodecID codec_id)
3003 case AV_CODEC_ID_ADPCM_SBPRO_2:
3005 case AV_CODEC_ID_ADPCM_SBPRO_3:
3007 case AV_CODEC_ID_ADPCM_SBPRO_4:
3008 case AV_CODEC_ID_ADPCM_IMA_WAV:
3009 case AV_CODEC_ID_ADPCM_IMA_QT:
3010 case AV_CODEC_ID_ADPCM_SWF:
3011 case AV_CODEC_ID_ADPCM_MS:
3014 return av_get_exact_bits_per_sample(codec_id);
3018 int av_get_audio_frame_duration(AVCodecContext *avctx, int frame_bytes)
3020 int id, sr, ch, ba, tag, bps;
3022 id = avctx->codec_id;
3023 sr = avctx->sample_rate;
3024 ch = avctx->channels;
3025 ba = avctx->block_align;
3026 tag = avctx->codec_tag;
3027 bps = av_get_exact_bits_per_sample(avctx->codec_id);
3029 /* codecs with an exact constant bits per sample */
3030 if (bps > 0 && ch > 0 && frame_bytes > 0 && ch < 32768 && bps < 32768)
3031 return (frame_bytes * 8LL) / (bps * ch);
3032 bps = avctx->bits_per_coded_sample;
3034 /* codecs with a fixed packet duration */
3036 case AV_CODEC_ID_ADPCM_ADX: return 32;
3037 case AV_CODEC_ID_ADPCM_IMA_QT: return 64;
3038 case AV_CODEC_ID_ADPCM_EA_XAS: return 128;
3039 case AV_CODEC_ID_AMR_NB:
3040 case AV_CODEC_ID_EVRC:
3041 case AV_CODEC_ID_GSM:
3042 case AV_CODEC_ID_QCELP:
3043 case AV_CODEC_ID_RA_288: return 160;
3044 case AV_CODEC_ID_AMR_WB:
3045 case AV_CODEC_ID_GSM_MS: return 320;
3046 case AV_CODEC_ID_MP1: return 384;
3047 case AV_CODEC_ID_ATRAC1: return 512;
3048 case AV_CODEC_ID_ATRAC3: return 1024;
3049 case AV_CODEC_ID_MP2:
3050 case AV_CODEC_ID_MUSEPACK7: return 1152;
3051 case AV_CODEC_ID_AC3: return 1536;
3055 /* calc from sample rate */
3056 if (id == AV_CODEC_ID_TTA)
3057 return 256 * sr / 245;
3060 /* calc from sample rate and channels */
3061 if (id == AV_CODEC_ID_BINKAUDIO_DCT)
3062 return (480 << (sr / 22050)) / ch;
3067 /* calc from block_align */
3068 if (id == AV_CODEC_ID_SIPR) {
3070 case 20: return 160;
3071 case 19: return 144;
3072 case 29: return 288;
3073 case 37: return 480;
3075 } else if (id == AV_CODEC_ID_ILBC) {
3077 case 38: return 160;
3078 case 50: return 240;
3083 if (frame_bytes > 0) {
3084 /* calc from frame_bytes only */
3085 if (id == AV_CODEC_ID_TRUESPEECH)
3086 return 240 * (frame_bytes / 32);
3087 if (id == AV_CODEC_ID_NELLYMOSER)
3088 return 256 * (frame_bytes / 64);
3089 if (id == AV_CODEC_ID_RA_144)
3090 return 160 * (frame_bytes / 20);
3091 if (id == AV_CODEC_ID_G723_1)
3092 return 240 * (frame_bytes / 24);
3095 /* calc from frame_bytes and bits_per_coded_sample */
3096 if (id == AV_CODEC_ID_ADPCM_G726)
3097 return frame_bytes * 8 / bps;
3101 /* calc from frame_bytes and channels */
3103 case AV_CODEC_ID_ADPCM_AFC:
3104 return frame_bytes / (9 * ch) * 16;
3105 case AV_CODEC_ID_ADPCM_DTK:
3106 return frame_bytes / (16 * ch) * 28;
3107 case AV_CODEC_ID_ADPCM_4XM:
3108 case AV_CODEC_ID_ADPCM_IMA_ISS:
3109 return (frame_bytes - 4 * ch) * 2 / ch;
3110 case AV_CODEC_ID_ADPCM_IMA_SMJPEG:
3111 return (frame_bytes - 4) * 2 / ch;
3112 case AV_CODEC_ID_ADPCM_IMA_AMV:
3113 return (frame_bytes - 8) * 2 / ch;
3114 case AV_CODEC_ID_ADPCM_XA:
3115 return (frame_bytes / 128) * 224 / ch;
3116 case AV_CODEC_ID_INTERPLAY_DPCM:
3117 return (frame_bytes - 6 - ch) / ch;
3118 case AV_CODEC_ID_ROQ_DPCM:
3119 return (frame_bytes - 8) / ch;
3120 case AV_CODEC_ID_XAN_DPCM:
3121 return (frame_bytes - 2 * ch) / ch;
3122 case AV_CODEC_ID_MACE3:
3123 return 3 * frame_bytes / ch;
3124 case AV_CODEC_ID_MACE6:
3125 return 6 * frame_bytes / ch;
3126 case AV_CODEC_ID_PCM_LXF:
3127 return 2 * (frame_bytes / (5 * ch));
3128 case AV_CODEC_ID_IAC:
3129 case AV_CODEC_ID_IMC:
3130 return 4 * frame_bytes / ch;
3134 /* calc from frame_bytes, channels, and codec_tag */
3135 if (id == AV_CODEC_ID_SOL_DPCM) {
3137 return frame_bytes / ch;
3139 return frame_bytes * 2 / ch;
3144 /* calc from frame_bytes, channels, and block_align */
3145 int blocks = frame_bytes / ba;
3146 switch (avctx->codec_id) {
3147 case AV_CODEC_ID_ADPCM_IMA_WAV:
3148 if (bps < 2 || bps > 5)
3150 return blocks * (1 + (ba - 4 * ch) / (bps * ch) * 8);
3151 case AV_CODEC_ID_ADPCM_IMA_DK3:
3152 return blocks * (((ba - 16) * 2 / 3 * 4) / ch);
3153 case AV_CODEC_ID_ADPCM_IMA_DK4:
3154 return blocks * (1 + (ba - 4 * ch) * 2 / ch);
3155 case AV_CODEC_ID_ADPCM_IMA_RAD:
3156 return blocks * ((ba - 4 * ch) * 2 / ch);
3157 case AV_CODEC_ID_ADPCM_MS:
3158 return blocks * (2 + (ba - 7 * ch) * 2 / ch);
3163 /* calc from frame_bytes, channels, and bits_per_coded_sample */
3164 switch (avctx->codec_id) {
3165 case AV_CODEC_ID_PCM_DVD:
3168 return 2 * (frame_bytes / ((bps * 2 / 8) * ch));
3169 case AV_CODEC_ID_PCM_BLURAY:
3172 return frame_bytes / ((FFALIGN(ch, 2) * bps) / 8);
3173 case AV_CODEC_ID_S302M:
3174 return 2 * (frame_bytes / ((bps + 4) / 4)) / ch;
3184 int ff_thread_init(AVCodecContext *s)
3191 unsigned int av_xiphlacing(unsigned char *s, unsigned int v)
3205 int ff_match_2uint16(const uint16_t(*tab)[2], int size, int a, int b)
3208 for (i = 0; i < size && !(tab[i][0] == a && tab[i][1] == b); i++) ;
3212 #if FF_API_MISSING_SAMPLE
3213 FF_DISABLE_DEPRECATION_WARNINGS
3214 void av_log_missing_feature(void *avc, const char *feature, int want_sample)
3216 av_log(avc, AV_LOG_WARNING, "%s is not implemented. Update your FFmpeg "
3217 "version to the newest one from Git. If the problem still "
3218 "occurs, it means that your file has a feature which has not "
3219 "been implemented.\n", feature);
3221 av_log_ask_for_sample(avc, NULL);
3224 void av_log_ask_for_sample(void *avc, const char *msg, ...)
3226 va_list argument_list;
3228 va_start(argument_list, msg);
3231 av_vlog(avc, AV_LOG_WARNING, msg, argument_list);
3232 av_log(avc, AV_LOG_WARNING, "If you want to help, upload a sample "
3233 "of this file to ftp://upload.ffmpeg.org/MPlayer/incoming/ "
3234 "and contact the ffmpeg-devel mailing list.\n");
3236 va_end(argument_list);
3238 FF_ENABLE_DEPRECATION_WARNINGS
3239 #endif /* FF_API_MISSING_SAMPLE */
3241 static AVHWAccel *first_hwaccel = NULL;
3242 static AVHWAccel **last_hwaccel = &first_hwaccel;
3244 void av_register_hwaccel(AVHWAccel *hwaccel)
3246 AVHWAccel **p = last_hwaccel;
3247 hwaccel->next = NULL;
3248 while(*p || avpriv_atomic_ptr_cas((void * volatile *)p, NULL, hwaccel))
3250 last_hwaccel = &hwaccel->next;
3253 AVHWAccel *av_hwaccel_next(AVHWAccel *hwaccel)
3255 return hwaccel ? hwaccel->next : first_hwaccel;
3258 AVHWAccel *ff_find_hwaccel(AVCodecContext *avctx)
3260 enum AVCodecID codec_id = avctx->codec->id;
3261 enum AVPixelFormat pix_fmt = avctx->pix_fmt;
3263 AVHWAccel *hwaccel = NULL;
3265 while ((hwaccel = av_hwaccel_next(hwaccel)))
3266 if (hwaccel->id == codec_id
3267 && hwaccel->pix_fmt == pix_fmt)
3272 int av_lockmgr_register(int (*cb)(void **mutex, enum AVLockOp op))
3275 if (lockmgr_cb(&codec_mutex, AV_LOCK_DESTROY))
3277 if (lockmgr_cb(&avformat_mutex, AV_LOCK_DESTROY))
3284 if (lockmgr_cb(&codec_mutex, AV_LOCK_CREATE))
3286 if (lockmgr_cb(&avformat_mutex, AV_LOCK_CREATE))
3292 int ff_lock_avcodec(AVCodecContext *log_ctx)
3295 if ((*lockmgr_cb)(&codec_mutex, AV_LOCK_OBTAIN))
3298 entangled_thread_counter++;
3299 if (entangled_thread_counter != 1) {
3300 av_log(log_ctx, AV_LOG_ERROR, "Insufficient thread locking around avcodec_open/close()\n");
3302 av_log(log_ctx, AV_LOG_ERROR, "No lock manager is set, please see av_lockmgr_register()\n");
3303 ff_avcodec_locked = 1;
3304 ff_unlock_avcodec();
3305 return AVERROR(EINVAL);
3307 av_assert0(!ff_avcodec_locked);
3308 ff_avcodec_locked = 1;
3312 int ff_unlock_avcodec(void)
3314 av_assert0(ff_avcodec_locked);
3315 ff_avcodec_locked = 0;
3316 entangled_thread_counter--;
3318 if ((*lockmgr_cb)(&codec_mutex, AV_LOCK_RELEASE))
3324 int avpriv_lock_avformat(void)
3327 if ((*lockmgr_cb)(&avformat_mutex, AV_LOCK_OBTAIN))
3333 int avpriv_unlock_avformat(void)
3336 if ((*lockmgr_cb)(&avformat_mutex, AV_LOCK_RELEASE))
3342 unsigned int avpriv_toupper4(unsigned int x)
3344 return av_toupper(x & 0xFF) +
3345 (av_toupper((x >> 8) & 0xFF) << 8) +
3346 (av_toupper((x >> 16) & 0xFF) << 16) +
3347 (av_toupper((x >> 24) & 0xFF) << 24);
3350 int ff_thread_ref_frame(ThreadFrame *dst, ThreadFrame *src)
3354 dst->owner = src->owner;
3356 ret = av_frame_ref(dst->f, src->f);
3360 if (src->progress &&
3361 !(dst->progress = av_buffer_ref(src->progress))) {
3362 ff_thread_release_buffer(dst->owner, dst);
3363 return AVERROR(ENOMEM);
3371 enum AVPixelFormat ff_thread_get_format(AVCodecContext *avctx, const enum AVPixelFormat *fmt)
3373 return avctx->get_format(avctx, fmt);
3376 int ff_thread_get_buffer(AVCodecContext *avctx, ThreadFrame *f, int flags)
3379 return ff_get_buffer(avctx, f->f, flags);
3382 void ff_thread_release_buffer(AVCodecContext *avctx, ThreadFrame *f)
3384 av_frame_unref(f->f);
3387 void ff_thread_finish_setup(AVCodecContext *avctx)
3391 void ff_thread_report_progress(ThreadFrame *f, int progress, int field)
3395 void ff_thread_await_progress(ThreadFrame *f, int progress, int field)
3399 int ff_thread_can_start_frame(AVCodecContext *avctx)
3404 int ff_alloc_entries(AVCodecContext *avctx, int count)
3409 void ff_reset_entries(AVCodecContext *avctx)
3413 void ff_thread_await_progress2(AVCodecContext *avctx, int field, int thread, int shift)
3417 void ff_thread_report_progress2(AVCodecContext *avctx, int field, int thread, int n)
3423 enum AVMediaType avcodec_get_type(enum AVCodecID codec_id)
3425 AVCodec *c= avcodec_find_decoder(codec_id);
3427 c= avcodec_find_encoder(codec_id);
3431 if (codec_id <= AV_CODEC_ID_NONE)
3432 return AVMEDIA_TYPE_UNKNOWN;
3433 else if (codec_id < AV_CODEC_ID_FIRST_AUDIO)
3434 return AVMEDIA_TYPE_VIDEO;
3435 else if (codec_id < AV_CODEC_ID_FIRST_SUBTITLE)
3436 return AVMEDIA_TYPE_AUDIO;
3437 else if (codec_id < AV_CODEC_ID_FIRST_UNKNOWN)
3438 return AVMEDIA_TYPE_SUBTITLE;
3440 return AVMEDIA_TYPE_UNKNOWN;
3443 int avcodec_is_open(AVCodecContext *s)
3445 return !!s->internal;
3448 int avpriv_bprint_to_extradata(AVCodecContext *avctx, struct AVBPrint *buf)
3453 ret = av_bprint_finalize(buf, &str);
3456 avctx->extradata = str;
3457 /* Note: the string is NUL terminated (so extradata can be read as a
3458 * string), but the ending character is not accounted in the size (in
3459 * binary formats you are likely not supposed to mux that character). When
3460 * extradata is copied, it is also padded with FF_INPUT_BUFFER_PADDING_SIZE
3462 avctx->extradata_size = buf->len;
3466 const uint8_t *avpriv_find_start_code(const uint8_t *av_restrict p,
3468 uint32_t *av_restrict state)
3472 av_assert0(p <= end);
3476 for (i = 0; i < 3; i++) {
3477 uint32_t tmp = *state << 8;
3478 *state = tmp + *(p++);
3479 if (tmp == 0x100 || p == end)
3484 if (p[-1] > 1 ) p += 3;
3485 else if (p[-2] ) p += 2;
3486 else if (p[-3]|(p[-1]-1)) p++;
3493 p = FFMIN(p, end) - 4;
3494 *state = AV_RB32(p);