3 * Copyright (c) 2001 Fabrice Bellard
4 * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
6 * This file is part of FFmpeg.
8 * FFmpeg is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
13 * FFmpeg is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with FFmpeg; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
29 #include "libavutil/atomic.h"
30 #include "libavutil/attributes.h"
31 #include "libavutil/avassert.h"
32 #include "libavutil/avstring.h"
33 #include "libavutil/bprint.h"
34 #include "libavutil/channel_layout.h"
35 #include "libavutil/crc.h"
36 #include "libavutil/frame.h"
37 #include "libavutil/internal.h"
38 #include "libavutil/mathematics.h"
39 #include "libavutil/pixdesc.h"
40 #include "libavutil/imgutils.h"
41 #include "libavutil/samplefmt.h"
42 #include "libavutil/dict.h"
44 #include "libavutil/opt.h"
46 #include "mpegvideo.h"
48 #include "frame_thread_encoder.h"
51 #include "bytestream.h"
64 #include "compat/w32pthreads.h"
66 #include "compat/os2threads.h"
69 #include "libavutil/ffversion.h"
70 const char av_codec_ffversion[] = "FFmpeg version " FFMPEG_VERSION;
72 #if HAVE_PTHREADS || HAVE_W32THREADS || HAVE_OS2THREADS
73 static int default_lockmgr_cb(void **arg, enum AVLockOp op)
75 void * volatile * mutex = arg;
83 pthread_mutex_t *tmp = av_malloc(sizeof(pthread_mutex_t));
85 return AVERROR(ENOMEM);
86 if ((err = pthread_mutex_init(tmp, NULL))) {
90 if (avpriv_atomic_ptr_cas(mutex, NULL, tmp)) {
91 pthread_mutex_destroy(tmp);
96 if ((err = pthread_mutex_lock(*mutex)))
100 case AV_LOCK_RELEASE:
101 if ((err = pthread_mutex_unlock(*mutex)))
105 case AV_LOCK_DESTROY:
107 pthread_mutex_destroy(*mutex);
109 avpriv_atomic_ptr_cas(mutex, *mutex, NULL);
114 static int (*lockmgr_cb)(void **mutex, enum AVLockOp op) = default_lockmgr_cb;
116 static int (*lockmgr_cb)(void **mutex, enum AVLockOp op) = NULL;
120 volatile int ff_avcodec_locked;
121 static int volatile entangled_thread_counter = 0;
122 static void *codec_mutex;
123 static void *avformat_mutex;
125 static inline int ff_fast_malloc(void *ptr, unsigned int *size, size_t min_size, int zero_realloc)
128 if (min_size <= *size && *p)
130 min_size = FFMAX(17 * min_size / 16 + 32, min_size);
132 *p = zero_realloc ? av_mallocz(min_size) : av_malloc(min_size);
139 void av_fast_padded_malloc(void *ptr, unsigned int *size, size_t min_size)
142 if (min_size > SIZE_MAX - FF_INPUT_BUFFER_PADDING_SIZE) {
147 if (!ff_fast_malloc(p, size, min_size + FF_INPUT_BUFFER_PADDING_SIZE, 1))
148 memset(*p + min_size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
151 void av_fast_padded_mallocz(void *ptr, unsigned int *size, size_t min_size)
154 if (min_size > SIZE_MAX - FF_INPUT_BUFFER_PADDING_SIZE) {
159 if (!ff_fast_malloc(p, size, min_size + FF_INPUT_BUFFER_PADDING_SIZE, 1))
160 memset(*p, 0, min_size + FF_INPUT_BUFFER_PADDING_SIZE);
163 /* encoder management */
164 static AVCodec *first_avcodec = NULL;
165 static AVCodec **last_avcodec = &first_avcodec;
167 AVCodec *av_codec_next(const AVCodec *c)
172 return first_avcodec;
175 static av_cold void avcodec_init(void)
177 static int initialized = 0;
179 if (initialized != 0)
184 ff_me_cmp_init_static();
187 int av_codec_is_encoder(const AVCodec *codec)
189 return codec && (codec->encode_sub || codec->encode2);
192 int av_codec_is_decoder(const AVCodec *codec)
194 return codec && codec->decode;
197 av_cold void avcodec_register(AVCodec *codec)
204 while(*p || avpriv_atomic_ptr_cas((void * volatile *)p, NULL, codec))
206 last_avcodec = &codec->next;
208 if (codec->init_static_data)
209 codec->init_static_data(codec);
213 unsigned avcodec_get_edge_width(void)
219 #if FF_API_SET_DIMENSIONS
220 void avcodec_set_dimensions(AVCodecContext *s, int width, int height)
222 int ret = ff_set_dimensions(s, width, height);
224 av_log(s, AV_LOG_WARNING, "Failed to set dimensions %d %d\n", width, height);
229 int ff_set_dimensions(AVCodecContext *s, int width, int height)
231 int ret = av_image_check_size(width, height, 0, s);
236 s->coded_width = width;
237 s->coded_height = height;
238 s->width = FF_CEIL_RSHIFT(width, s->lowres);
239 s->height = FF_CEIL_RSHIFT(height, s->lowres);
244 int ff_set_sar(AVCodecContext *avctx, AVRational sar)
246 int ret = av_image_check_sar(avctx->width, avctx->height, sar);
249 av_log(avctx, AV_LOG_WARNING, "ignoring invalid SAR: %d/%d\n",
251 avctx->sample_aspect_ratio = (AVRational){ 0, 1 };
254 avctx->sample_aspect_ratio = sar;
259 int ff_side_data_update_matrix_encoding(AVFrame *frame,
260 enum AVMatrixEncoding matrix_encoding)
262 AVFrameSideData *side_data;
263 enum AVMatrixEncoding *data;
265 side_data = av_frame_get_side_data(frame, AV_FRAME_DATA_MATRIXENCODING);
267 side_data = av_frame_new_side_data(frame, AV_FRAME_DATA_MATRIXENCODING,
268 sizeof(enum AVMatrixEncoding));
271 return AVERROR(ENOMEM);
273 data = (enum AVMatrixEncoding*)side_data->data;
274 *data = matrix_encoding;
279 void avcodec_align_dimensions2(AVCodecContext *s, int *width, int *height,
280 int linesize_align[AV_NUM_DATA_POINTERS])
285 AVPixFmtDescriptor const *desc = av_pix_fmt_desc_get(s->pix_fmt);
288 w_align = 1 << desc->log2_chroma_w;
289 h_align = 1 << desc->log2_chroma_h;
292 switch (s->pix_fmt) {
293 case AV_PIX_FMT_YUV420P:
294 case AV_PIX_FMT_YUYV422:
295 case AV_PIX_FMT_YVYU422:
296 case AV_PIX_FMT_UYVY422:
297 case AV_PIX_FMT_YUV422P:
298 case AV_PIX_FMT_YUV440P:
299 case AV_PIX_FMT_YUV444P:
300 case AV_PIX_FMT_GBRP:
301 case AV_PIX_FMT_GBRAP:
302 case AV_PIX_FMT_GRAY8:
303 case AV_PIX_FMT_GRAY16BE:
304 case AV_PIX_FMT_GRAY16LE:
305 case AV_PIX_FMT_YUVJ420P:
306 case AV_PIX_FMT_YUVJ422P:
307 case AV_PIX_FMT_YUVJ440P:
308 case AV_PIX_FMT_YUVJ444P:
309 case AV_PIX_FMT_YUVA420P:
310 case AV_PIX_FMT_YUVA422P:
311 case AV_PIX_FMT_YUVA444P:
312 case AV_PIX_FMT_YUV420P9LE:
313 case AV_PIX_FMT_YUV420P9BE:
314 case AV_PIX_FMT_YUV420P10LE:
315 case AV_PIX_FMT_YUV420P10BE:
316 case AV_PIX_FMT_YUV420P12LE:
317 case AV_PIX_FMT_YUV420P12BE:
318 case AV_PIX_FMT_YUV420P14LE:
319 case AV_PIX_FMT_YUV420P14BE:
320 case AV_PIX_FMT_YUV420P16LE:
321 case AV_PIX_FMT_YUV420P16BE:
322 case AV_PIX_FMT_YUVA420P9LE:
323 case AV_PIX_FMT_YUVA420P9BE:
324 case AV_PIX_FMT_YUVA420P10LE:
325 case AV_PIX_FMT_YUVA420P10BE:
326 case AV_PIX_FMT_YUVA420P16LE:
327 case AV_PIX_FMT_YUVA420P16BE:
328 case AV_PIX_FMT_YUV422P9LE:
329 case AV_PIX_FMT_YUV422P9BE:
330 case AV_PIX_FMT_YUV422P10LE:
331 case AV_PIX_FMT_YUV422P10BE:
332 case AV_PIX_FMT_YUV422P12LE:
333 case AV_PIX_FMT_YUV422P12BE:
334 case AV_PIX_FMT_YUV422P14LE:
335 case AV_PIX_FMT_YUV422P14BE:
336 case AV_PIX_FMT_YUV422P16LE:
337 case AV_PIX_FMT_YUV422P16BE:
338 case AV_PIX_FMT_YUVA422P9LE:
339 case AV_PIX_FMT_YUVA422P9BE:
340 case AV_PIX_FMT_YUVA422P10LE:
341 case AV_PIX_FMT_YUVA422P10BE:
342 case AV_PIX_FMT_YUVA422P16LE:
343 case AV_PIX_FMT_YUVA422P16BE:
344 case AV_PIX_FMT_YUV444P9LE:
345 case AV_PIX_FMT_YUV444P9BE:
346 case AV_PIX_FMT_YUV444P10LE:
347 case AV_PIX_FMT_YUV444P10BE:
348 case AV_PIX_FMT_YUV444P12LE:
349 case AV_PIX_FMT_YUV444P12BE:
350 case AV_PIX_FMT_YUV444P14LE:
351 case AV_PIX_FMT_YUV444P14BE:
352 case AV_PIX_FMT_YUV444P16LE:
353 case AV_PIX_FMT_YUV444P16BE:
354 case AV_PIX_FMT_YUVA444P9LE:
355 case AV_PIX_FMT_YUVA444P9BE:
356 case AV_PIX_FMT_YUVA444P10LE:
357 case AV_PIX_FMT_YUVA444P10BE:
358 case AV_PIX_FMT_YUVA444P16LE:
359 case AV_PIX_FMT_YUVA444P16BE:
360 case AV_PIX_FMT_GBRP9LE:
361 case AV_PIX_FMT_GBRP9BE:
362 case AV_PIX_FMT_GBRP10LE:
363 case AV_PIX_FMT_GBRP10BE:
364 case AV_PIX_FMT_GBRP12LE:
365 case AV_PIX_FMT_GBRP12BE:
366 case AV_PIX_FMT_GBRP14LE:
367 case AV_PIX_FMT_GBRP14BE:
368 case AV_PIX_FMT_GBRP16LE:
369 case AV_PIX_FMT_GBRP16BE:
370 w_align = 16; //FIXME assume 16 pixel per macroblock
371 h_align = 16 * 2; // interlaced needs 2 macroblocks height
373 case AV_PIX_FMT_YUV411P:
374 case AV_PIX_FMT_YUVJ411P:
375 case AV_PIX_FMT_UYYVYY411:
379 case AV_PIX_FMT_YUV410P:
380 if (s->codec_id == AV_CODEC_ID_SVQ1) {
385 case AV_PIX_FMT_RGB555:
386 if (s->codec_id == AV_CODEC_ID_RPZA) {
391 case AV_PIX_FMT_PAL8:
392 case AV_PIX_FMT_BGR8:
393 case AV_PIX_FMT_RGB8:
394 if (s->codec_id == AV_CODEC_ID_SMC ||
395 s->codec_id == AV_CODEC_ID_CINEPAK) {
399 if (s->codec_id == AV_CODEC_ID_JV) {
404 case AV_PIX_FMT_BGR24:
405 if ((s->codec_id == AV_CODEC_ID_MSZH) ||
406 (s->codec_id == AV_CODEC_ID_ZLIB)) {
411 case AV_PIX_FMT_RGB24:
412 if (s->codec_id == AV_CODEC_ID_CINEPAK) {
421 if (s->codec_id == AV_CODEC_ID_IFF_ILBM || s->codec_id == AV_CODEC_ID_IFF_BYTERUN1) {
422 w_align = FFMAX(w_align, 8);
425 *width = FFALIGN(*width, w_align);
426 *height = FFALIGN(*height, h_align);
427 if (s->codec_id == AV_CODEC_ID_H264 || s->lowres)
428 // some of the optimized chroma MC reads one line too much
429 // which is also done in mpeg decoders with lowres > 0
432 for (i = 0; i < 4; i++)
433 linesize_align[i] = STRIDE_ALIGN;
436 void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height)
438 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(s->pix_fmt);
439 int chroma_shift = desc->log2_chroma_w;
440 int linesize_align[AV_NUM_DATA_POINTERS];
443 avcodec_align_dimensions2(s, width, height, linesize_align);
444 align = FFMAX(linesize_align[0], linesize_align[3]);
445 linesize_align[1] <<= chroma_shift;
446 linesize_align[2] <<= chroma_shift;
447 align = FFMAX3(align, linesize_align[1], linesize_align[2]);
448 *width = FFALIGN(*width, align);
451 int avcodec_enum_to_chroma_pos(int *xpos, int *ypos, enum AVChromaLocation pos)
453 if (pos <= AVCHROMA_LOC_UNSPECIFIED || pos >= AVCHROMA_LOC_NB)
454 return AVERROR(EINVAL);
457 *xpos = (pos&1) * 128;
458 *ypos = ((pos>>1)^(pos<4)) * 128;
463 enum AVChromaLocation avcodec_chroma_pos_to_enum(int xpos, int ypos)
467 for (pos = AVCHROMA_LOC_UNSPECIFIED + 1; pos < AVCHROMA_LOC_NB; pos++) {
468 if (avcodec_enum_to_chroma_pos(&xout, &yout, pos) == 0 && xout == xpos && yout == ypos)
471 return AVCHROMA_LOC_UNSPECIFIED;
474 int avcodec_fill_audio_frame(AVFrame *frame, int nb_channels,
475 enum AVSampleFormat sample_fmt, const uint8_t *buf,
476 int buf_size, int align)
478 int ch, planar, needed_size, ret = 0;
480 needed_size = av_samples_get_buffer_size(NULL, nb_channels,
481 frame->nb_samples, sample_fmt,
483 if (buf_size < needed_size)
484 return AVERROR(EINVAL);
486 planar = av_sample_fmt_is_planar(sample_fmt);
487 if (planar && nb_channels > AV_NUM_DATA_POINTERS) {
488 if (!(frame->extended_data = av_mallocz_array(nb_channels,
489 sizeof(*frame->extended_data))))
490 return AVERROR(ENOMEM);
492 frame->extended_data = frame->data;
495 if ((ret = av_samples_fill_arrays(frame->extended_data, &frame->linesize[0],
496 (uint8_t *)(intptr_t)buf, nb_channels, frame->nb_samples,
497 sample_fmt, align)) < 0) {
498 if (frame->extended_data != frame->data)
499 av_freep(&frame->extended_data);
502 if (frame->extended_data != frame->data) {
503 for (ch = 0; ch < AV_NUM_DATA_POINTERS; ch++)
504 frame->data[ch] = frame->extended_data[ch];
510 static int update_frame_pool(AVCodecContext *avctx, AVFrame *frame)
512 FramePool *pool = avctx->internal->pool;
515 switch (avctx->codec_type) {
516 case AVMEDIA_TYPE_VIDEO: {
519 int w = frame->width;
520 int h = frame->height;
521 int tmpsize, unaligned;
523 if (pool->format == frame->format &&
524 pool->width == frame->width && pool->height == frame->height)
527 avcodec_align_dimensions2(avctx, &w, &h, pool->stride_align);
530 // NOTE: do not align linesizes individually, this breaks e.g. assumptions
531 // that linesize[0] == 2*linesize[1] in the MPEG-encoder for 4:2:2
532 av_image_fill_linesizes(picture.linesize, avctx->pix_fmt, w);
533 // increase alignment of w for next try (rhs gives the lowest bit set in w)
537 for (i = 0; i < 4; i++)
538 unaligned |= picture.linesize[i] % pool->stride_align[i];
541 tmpsize = av_image_fill_pointers(picture.data, avctx->pix_fmt, h,
542 NULL, picture.linesize);
546 for (i = 0; i < 3 && picture.data[i + 1]; i++)
547 size[i] = picture.data[i + 1] - picture.data[i];
548 size[i] = tmpsize - (picture.data[i] - picture.data[0]);
550 for (i = 0; i < 4; i++) {
551 av_buffer_pool_uninit(&pool->pools[i]);
552 pool->linesize[i] = picture.linesize[i];
554 pool->pools[i] = av_buffer_pool_init(size[i] + 16 + STRIDE_ALIGN - 1,
555 CONFIG_MEMORY_POISONING ?
558 if (!pool->pools[i]) {
559 ret = AVERROR(ENOMEM);
564 pool->format = frame->format;
565 pool->width = frame->width;
566 pool->height = frame->height;
570 case AVMEDIA_TYPE_AUDIO: {
571 int ch = av_frame_get_channels(frame); //av_get_channel_layout_nb_channels(frame->channel_layout);
572 int planar = av_sample_fmt_is_planar(frame->format);
573 int planes = planar ? ch : 1;
575 if (pool->format == frame->format && pool->planes == planes &&
576 pool->channels == ch && frame->nb_samples == pool->samples)
579 av_buffer_pool_uninit(&pool->pools[0]);
580 ret = av_samples_get_buffer_size(&pool->linesize[0], ch,
581 frame->nb_samples, frame->format, 0);
585 pool->pools[0] = av_buffer_pool_init(pool->linesize[0], NULL);
586 if (!pool->pools[0]) {
587 ret = AVERROR(ENOMEM);
591 pool->format = frame->format;
592 pool->planes = planes;
594 pool->samples = frame->nb_samples;
597 default: av_assert0(0);
601 for (i = 0; i < 4; i++)
602 av_buffer_pool_uninit(&pool->pools[i]);
604 pool->planes = pool->channels = pool->samples = 0;
605 pool->width = pool->height = 0;
609 static int audio_get_buffer(AVCodecContext *avctx, AVFrame *frame)
611 FramePool *pool = avctx->internal->pool;
612 int planes = pool->planes;
615 frame->linesize[0] = pool->linesize[0];
617 if (planes > AV_NUM_DATA_POINTERS) {
618 frame->extended_data = av_mallocz_array(planes, sizeof(*frame->extended_data));
619 frame->nb_extended_buf = planes - AV_NUM_DATA_POINTERS;
620 frame->extended_buf = av_mallocz_array(frame->nb_extended_buf,
621 sizeof(*frame->extended_buf));
622 if (!frame->extended_data || !frame->extended_buf) {
623 av_freep(&frame->extended_data);
624 av_freep(&frame->extended_buf);
625 return AVERROR(ENOMEM);
628 frame->extended_data = frame->data;
629 av_assert0(frame->nb_extended_buf == 0);
632 for (i = 0; i < FFMIN(planes, AV_NUM_DATA_POINTERS); i++) {
633 frame->buf[i] = av_buffer_pool_get(pool->pools[0]);
636 frame->extended_data[i] = frame->data[i] = frame->buf[i]->data;
638 for (i = 0; i < frame->nb_extended_buf; i++) {
639 frame->extended_buf[i] = av_buffer_pool_get(pool->pools[0]);
640 if (!frame->extended_buf[i])
642 frame->extended_data[i + AV_NUM_DATA_POINTERS] = frame->extended_buf[i]->data;
645 if (avctx->debug & FF_DEBUG_BUFFERS)
646 av_log(avctx, AV_LOG_DEBUG, "default_get_buffer called on frame %p", frame);
650 av_frame_unref(frame);
651 return AVERROR(ENOMEM);
654 static int video_get_buffer(AVCodecContext *s, AVFrame *pic)
656 FramePool *pool = s->internal->pool;
660 av_log(s, AV_LOG_ERROR, "pic->data[0]!=NULL in avcodec_default_get_buffer\n");
664 memset(pic->data, 0, sizeof(pic->data));
665 pic->extended_data = pic->data;
667 for (i = 0; i < 4 && pool->pools[i]; i++) {
668 pic->linesize[i] = pool->linesize[i];
670 pic->buf[i] = av_buffer_pool_get(pool->pools[i]);
674 pic->data[i] = pic->buf[i]->data;
676 for (; i < AV_NUM_DATA_POINTERS; i++) {
678 pic->linesize[i] = 0;
680 if (pic->data[1] && !pic->data[2])
681 avpriv_set_systematic_pal2((uint32_t *)pic->data[1], s->pix_fmt);
683 if (s->debug & FF_DEBUG_BUFFERS)
684 av_log(s, AV_LOG_DEBUG, "default_get_buffer called on pic %p\n", pic);
689 return AVERROR(ENOMEM);
692 void avpriv_color_frame(AVFrame *frame, const int c[4])
694 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(frame->format);
697 av_assert0(desc->flags & AV_PIX_FMT_FLAG_PLANAR);
699 for (p = 0; p<desc->nb_components; p++) {
700 uint8_t *dst = frame->data[p];
701 int is_chroma = p == 1 || p == 2;
702 int bytes = is_chroma ? FF_CEIL_RSHIFT(frame->width, desc->log2_chroma_w) : frame->width;
703 int height = is_chroma ? FF_CEIL_RSHIFT(frame->height, desc->log2_chroma_h) : frame->height;
704 for (y = 0; y < height; y++) {
705 if (desc->comp[0].depth_minus1 >= 8) {
706 for (x = 0; x<bytes; x++)
707 ((uint16_t*)dst)[x] = c[p];
709 memset(dst, c[p], bytes);
710 dst += frame->linesize[p];
715 int avcodec_default_get_buffer2(AVCodecContext *avctx, AVFrame *frame, int flags)
719 if ((ret = update_frame_pool(avctx, frame)) < 0)
722 #if FF_API_GET_BUFFER
723 FF_DISABLE_DEPRECATION_WARNINGS
724 frame->type = FF_BUFFER_TYPE_INTERNAL;
725 FF_ENABLE_DEPRECATION_WARNINGS
728 switch (avctx->codec_type) {
729 case AVMEDIA_TYPE_VIDEO:
730 return video_get_buffer(avctx, frame);
731 case AVMEDIA_TYPE_AUDIO:
732 return audio_get_buffer(avctx, frame);
738 int ff_init_buffer_info(AVCodecContext *avctx, AVFrame *frame)
740 AVPacket *pkt = avctx->internal->pkt;
742 static const struct {
743 enum AVPacketSideDataType packet;
744 enum AVFrameSideDataType frame;
746 { AV_PKT_DATA_REPLAYGAIN , AV_FRAME_DATA_REPLAYGAIN },
747 { AV_PKT_DATA_DISPLAYMATRIX, AV_FRAME_DATA_DISPLAYMATRIX },
748 { AV_PKT_DATA_STEREO3D, AV_FRAME_DATA_STEREO3D },
749 { AV_PKT_DATA_AUDIO_SERVICE_TYPE, AV_FRAME_DATA_AUDIO_SERVICE_TYPE },
753 frame->pkt_pts = pkt->pts;
754 av_frame_set_pkt_pos (frame, pkt->pos);
755 av_frame_set_pkt_duration(frame, pkt->duration);
756 av_frame_set_pkt_size (frame, pkt->size);
758 for (i = 0; i < FF_ARRAY_ELEMS(sd); i++) {
760 uint8_t *packet_sd = av_packet_get_side_data(pkt, sd[i].packet, &size);
762 AVFrameSideData *frame_sd = av_frame_new_side_data(frame,
766 return AVERROR(ENOMEM);
768 memcpy(frame_sd->data, packet_sd, size);
772 frame->pkt_pts = AV_NOPTS_VALUE;
773 av_frame_set_pkt_pos (frame, -1);
774 av_frame_set_pkt_duration(frame, 0);
775 av_frame_set_pkt_size (frame, -1);
777 frame->reordered_opaque = avctx->reordered_opaque;
779 if (frame->color_primaries == AVCOL_PRI_UNSPECIFIED)
780 frame->color_primaries = avctx->color_primaries;
781 if (frame->color_trc == AVCOL_TRC_UNSPECIFIED)
782 frame->color_trc = avctx->color_trc;
783 if (av_frame_get_colorspace(frame) == AVCOL_SPC_UNSPECIFIED)
784 av_frame_set_colorspace(frame, avctx->colorspace);
785 if (av_frame_get_color_range(frame) == AVCOL_RANGE_UNSPECIFIED)
786 av_frame_set_color_range(frame, avctx->color_range);
787 if (frame->chroma_location == AVCHROMA_LOC_UNSPECIFIED)
788 frame->chroma_location = avctx->chroma_sample_location;
790 switch (avctx->codec->type) {
791 case AVMEDIA_TYPE_VIDEO:
792 frame->format = avctx->pix_fmt;
793 if (!frame->sample_aspect_ratio.num)
794 frame->sample_aspect_ratio = avctx->sample_aspect_ratio;
796 if (frame->width && frame->height &&
797 av_image_check_sar(frame->width, frame->height,
798 frame->sample_aspect_ratio) < 0) {
799 av_log(avctx, AV_LOG_WARNING, "ignoring invalid SAR: %u/%u\n",
800 frame->sample_aspect_ratio.num,
801 frame->sample_aspect_ratio.den);
802 frame->sample_aspect_ratio = (AVRational){ 0, 1 };
806 case AVMEDIA_TYPE_AUDIO:
807 if (!frame->sample_rate)
808 frame->sample_rate = avctx->sample_rate;
809 if (frame->format < 0)
810 frame->format = avctx->sample_fmt;
811 if (!frame->channel_layout) {
812 if (avctx->channel_layout) {
813 if (av_get_channel_layout_nb_channels(avctx->channel_layout) !=
815 av_log(avctx, AV_LOG_ERROR, "Inconsistent channel "
817 return AVERROR(EINVAL);
820 frame->channel_layout = avctx->channel_layout;
822 if (avctx->channels > FF_SANE_NB_CHANNELS) {
823 av_log(avctx, AV_LOG_ERROR, "Too many channels: %d.\n",
825 return AVERROR(ENOSYS);
829 av_frame_set_channels(frame, avctx->channels);
835 #if FF_API_GET_BUFFER
836 FF_DISABLE_DEPRECATION_WARNINGS
837 int avcodec_default_get_buffer(AVCodecContext *avctx, AVFrame *frame)
839 return avcodec_default_get_buffer2(avctx, frame, 0);
842 typedef struct CompatReleaseBufPriv {
843 AVCodecContext avctx;
845 uint8_t avframe_padding[1024]; // hack to allow linking to a avutil with larger AVFrame
846 } CompatReleaseBufPriv;
848 static void compat_free_buffer(void *opaque, uint8_t *data)
850 CompatReleaseBufPriv *priv = opaque;
851 if (priv->avctx.release_buffer)
852 priv->avctx.release_buffer(&priv->avctx, &priv->frame);
856 static void compat_release_buffer(void *opaque, uint8_t *data)
858 AVBufferRef *buf = opaque;
859 av_buffer_unref(&buf);
861 FF_ENABLE_DEPRECATION_WARNINGS
864 int ff_decode_frame_props(AVCodecContext *avctx, AVFrame *frame)
866 return ff_init_buffer_info(avctx, frame);
869 static int get_buffer_internal(AVCodecContext *avctx, AVFrame *frame, int flags)
871 const AVHWAccel *hwaccel = avctx->hwaccel;
872 int override_dimensions = 1;
875 if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
876 if ((ret = av_image_check_size(avctx->width, avctx->height, 0, avctx)) < 0 || avctx->pix_fmt<0) {
877 av_log(avctx, AV_LOG_ERROR, "video_get_buffer: image parameters invalid\n");
878 return AVERROR(EINVAL);
881 if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
882 if (frame->width <= 0 || frame->height <= 0) {
883 frame->width = FFMAX(avctx->width, FF_CEIL_RSHIFT(avctx->coded_width, avctx->lowres));
884 frame->height = FFMAX(avctx->height, FF_CEIL_RSHIFT(avctx->coded_height, avctx->lowres));
885 override_dimensions = 0;
888 ret = ff_decode_frame_props(avctx, frame);
891 if ((ret = ff_init_buffer_info(avctx, frame)) < 0)
895 if (hwaccel->alloc_frame) {
896 ret = hwaccel->alloc_frame(avctx, frame);
900 avctx->sw_pix_fmt = avctx->pix_fmt;
902 #if FF_API_GET_BUFFER
903 FF_DISABLE_DEPRECATION_WARNINGS
905 * Wrap an old get_buffer()-allocated buffer in a bunch of AVBuffers.
906 * We wrap each plane in its own AVBuffer. Each of those has a reference to
907 * a dummy AVBuffer as its private data, unreffing it on free.
908 * When all the planes are freed, the dummy buffer's free callback calls
911 if (avctx->get_buffer) {
912 CompatReleaseBufPriv *priv = NULL;
913 AVBufferRef *dummy_buf = NULL;
916 if (flags & AV_GET_BUFFER_FLAG_REF)
917 frame->reference = 1;
919 ret = avctx->get_buffer(avctx, frame);
923 /* return if the buffers are already set up
924 * this would happen e.g. when a custom get_buffer() calls
925 * avcodec_default_get_buffer
930 priv = av_mallocz(sizeof(*priv));
932 ret = AVERROR(ENOMEM);
935 priv->avctx = *avctx;
936 priv->frame = *frame;
938 dummy_buf = av_buffer_create(NULL, 0, compat_free_buffer, priv, 0);
940 ret = AVERROR(ENOMEM);
944 #define WRAP_PLANE(ref_out, data, data_size) \
946 AVBufferRef *dummy_ref = av_buffer_ref(dummy_buf); \
948 ret = AVERROR(ENOMEM); \
951 ref_out = av_buffer_create(data, data_size, compat_release_buffer, \
954 av_frame_unref(frame); \
955 ret = AVERROR(ENOMEM); \
960 if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
961 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(frame->format);
963 planes = av_pix_fmt_count_planes(frame->format);
964 /* workaround for AVHWAccel plane count of 0, buf[0] is used as
965 check for allocated buffers: make libavcodec happy */
966 if (desc && desc->flags & AV_PIX_FMT_FLAG_HWACCEL)
968 if (!desc || planes <= 0) {
969 ret = AVERROR(EINVAL);
973 for (i = 0; i < planes; i++) {
974 int v_shift = (i == 1 || i == 2) ? desc->log2_chroma_h : 0;
975 int plane_size = (frame->height >> v_shift) * frame->linesize[i];
977 WRAP_PLANE(frame->buf[i], frame->data[i], plane_size);
980 int planar = av_sample_fmt_is_planar(frame->format);
981 planes = planar ? avctx->channels : 1;
983 if (planes > FF_ARRAY_ELEMS(frame->buf)) {
984 frame->nb_extended_buf = planes - FF_ARRAY_ELEMS(frame->buf);
985 frame->extended_buf = av_malloc_array(sizeof(*frame->extended_buf),
986 frame->nb_extended_buf);
987 if (!frame->extended_buf) {
988 ret = AVERROR(ENOMEM);
993 for (i = 0; i < FFMIN(planes, FF_ARRAY_ELEMS(frame->buf)); i++)
994 WRAP_PLANE(frame->buf[i], frame->extended_data[i], frame->linesize[0]);
996 for (i = 0; i < frame->nb_extended_buf; i++)
997 WRAP_PLANE(frame->extended_buf[i],
998 frame->extended_data[i + FF_ARRAY_ELEMS(frame->buf)],
1002 av_buffer_unref(&dummy_buf);
1005 frame->width = avctx->width;
1006 frame->height = avctx->height;
1011 avctx->release_buffer(avctx, frame);
1013 av_buffer_unref(&dummy_buf);
1016 FF_ENABLE_DEPRECATION_WARNINGS
1019 ret = avctx->get_buffer2(avctx, frame, flags);
1022 if (avctx->codec_type == AVMEDIA_TYPE_VIDEO && !override_dimensions) {
1023 frame->width = avctx->width;
1024 frame->height = avctx->height;
1030 int ff_get_buffer(AVCodecContext *avctx, AVFrame *frame, int flags)
1032 int ret = get_buffer_internal(avctx, frame, flags);
1034 av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
1038 static int reget_buffer_internal(AVCodecContext *avctx, AVFrame *frame)
1043 av_assert0(avctx->codec_type == AVMEDIA_TYPE_VIDEO);
1045 if (frame->data[0] && (frame->width != avctx->width || frame->height != avctx->height || frame->format != avctx->pix_fmt)) {
1046 av_log(avctx, AV_LOG_WARNING, "Picture changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s in reget buffer()\n",
1047 frame->width, frame->height, av_get_pix_fmt_name(frame->format), avctx->width, avctx->height, av_get_pix_fmt_name(avctx->pix_fmt));
1048 av_frame_unref(frame);
1051 ff_init_buffer_info(avctx, frame);
1053 if (!frame->data[0])
1054 return ff_get_buffer(avctx, frame, AV_GET_BUFFER_FLAG_REF);
1056 if (av_frame_is_writable(frame))
1057 return ff_decode_frame_props(avctx, frame);
1059 tmp = av_frame_alloc();
1061 return AVERROR(ENOMEM);
1063 av_frame_move_ref(tmp, frame);
1065 ret = ff_get_buffer(avctx, frame, AV_GET_BUFFER_FLAG_REF);
1067 av_frame_free(&tmp);
1071 av_frame_copy(frame, tmp);
1072 av_frame_free(&tmp);
1077 int ff_reget_buffer(AVCodecContext *avctx, AVFrame *frame)
1079 int ret = reget_buffer_internal(avctx, frame);
1081 av_log(avctx, AV_LOG_ERROR, "reget_buffer() failed\n");
1085 #if FF_API_GET_BUFFER
1086 void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic)
1088 av_assert0(s->codec_type == AVMEDIA_TYPE_VIDEO);
1090 av_frame_unref(pic);
1093 int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic)
1100 int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2), void *arg, int *ret, int count, int size)
1104 for (i = 0; i < count; i++) {
1105 int r = func(c, (char *)arg + i * size);
1112 int avcodec_default_execute2(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2, int jobnr, int threadnr), void *arg, int *ret, int count)
1116 for (i = 0; i < count; i++) {
1117 int r = func(c, arg, i, 0);
1124 enum AVPixelFormat avpriv_find_pix_fmt(const PixelFormatTag *tags,
1125 unsigned int fourcc)
1127 while (tags->pix_fmt >= 0) {
1128 if (tags->fourcc == fourcc)
1129 return tags->pix_fmt;
1132 return AV_PIX_FMT_NONE;
1135 static int is_hwaccel_pix_fmt(enum AVPixelFormat pix_fmt)
1137 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
1138 return desc->flags & AV_PIX_FMT_FLAG_HWACCEL;
1141 enum AVPixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum AVPixelFormat *fmt)
1143 while (*fmt != AV_PIX_FMT_NONE && is_hwaccel_pix_fmt(*fmt))
1148 static AVHWAccel *find_hwaccel(enum AVCodecID codec_id,
1149 enum AVPixelFormat pix_fmt)
1151 AVHWAccel *hwaccel = NULL;
1153 while ((hwaccel = av_hwaccel_next(hwaccel)))
1154 if (hwaccel->id == codec_id
1155 && hwaccel->pix_fmt == pix_fmt)
1160 static int setup_hwaccel(AVCodecContext *avctx,
1161 const enum AVPixelFormat fmt,
1164 AVHWAccel *hwa = find_hwaccel(avctx->codec_id, fmt);
1168 av_log(avctx, AV_LOG_ERROR,
1169 "Could not find an AVHWAccel for the pixel format: %s",
1171 return AVERROR(ENOENT);
1174 if (hwa->priv_data_size) {
1175 avctx->internal->hwaccel_priv_data = av_mallocz(hwa->priv_data_size);
1176 if (!avctx->internal->hwaccel_priv_data)
1177 return AVERROR(ENOMEM);
1181 ret = hwa->init(avctx);
1183 av_freep(&avctx->internal->hwaccel_priv_data);
1188 avctx->hwaccel = hwa;
1193 int ff_get_format(AVCodecContext *avctx, const enum AVPixelFormat *fmt)
1195 const AVPixFmtDescriptor *desc;
1196 enum AVPixelFormat *choices;
1197 enum AVPixelFormat ret;
1200 while (fmt[n] != AV_PIX_FMT_NONE)
1204 avctx->sw_pix_fmt = fmt[n - 1];
1205 av_assert2(!is_hwaccel_pix_fmt(avctx->sw_pix_fmt));
1207 choices = av_malloc_array(n + 1, sizeof(*choices));
1209 return AV_PIX_FMT_NONE;
1211 memcpy(choices, fmt, (n + 1) * sizeof(*choices));
1214 if (avctx->hwaccel && avctx->hwaccel->uninit)
1215 avctx->hwaccel->uninit(avctx);
1216 av_freep(&avctx->internal->hwaccel_priv_data);
1217 avctx->hwaccel = NULL;
1219 ret = avctx->get_format(avctx, choices);
1221 desc = av_pix_fmt_desc_get(ret);
1223 ret = AV_PIX_FMT_NONE;
1227 if (!(desc->flags & AV_PIX_FMT_FLAG_HWACCEL))
1229 if (avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU)
1232 if (!setup_hwaccel(avctx, ret, desc->name))
1235 /* Remove failed hwaccel from choices */
1236 for (n = 0; choices[n] != ret; n++)
1237 av_assert0(choices[n] != AV_PIX_FMT_NONE);
1240 choices[n] = choices[n + 1];
1241 while (choices[n++] != AV_PIX_FMT_NONE);
1248 #if FF_API_AVFRAME_LAVC
1249 void avcodec_get_frame_defaults(AVFrame *frame)
1251 #if LIBAVCODEC_VERSION_MAJOR >= 55
1252 // extended_data should explicitly be freed when needed, this code is unsafe currently
1253 // also this is not compatible to the <55 ABI/API
1254 if (frame->extended_data != frame->data && 0)
1255 av_freep(&frame->extended_data);
1258 memset(frame, 0, sizeof(AVFrame));
1259 av_frame_unref(frame);
1262 AVFrame *avcodec_alloc_frame(void)
1264 return av_frame_alloc();
1267 void avcodec_free_frame(AVFrame **frame)
1269 av_frame_free(frame);
1273 MAKE_ACCESSORS(AVCodecContext, codec, AVRational, pkt_timebase)
1274 MAKE_ACCESSORS(AVCodecContext, codec, const AVCodecDescriptor *, codec_descriptor)
1275 MAKE_ACCESSORS(AVCodecContext, codec, int, lowres)
1276 MAKE_ACCESSORS(AVCodecContext, codec, int, seek_preroll)
1277 MAKE_ACCESSORS(AVCodecContext, codec, uint16_t*, chroma_intra_matrix)
1279 int av_codec_get_max_lowres(const AVCodec *codec)
1281 return codec->max_lowres;
1284 static void get_subtitle_defaults(AVSubtitle *sub)
1286 memset(sub, 0, sizeof(*sub));
1287 sub->pts = AV_NOPTS_VALUE;
1290 static int get_bit_rate(AVCodecContext *ctx)
1293 int bits_per_sample;
1295 switch (ctx->codec_type) {
1296 case AVMEDIA_TYPE_VIDEO:
1297 case AVMEDIA_TYPE_DATA:
1298 case AVMEDIA_TYPE_SUBTITLE:
1299 case AVMEDIA_TYPE_ATTACHMENT:
1300 bit_rate = ctx->bit_rate;
1302 case AVMEDIA_TYPE_AUDIO:
1303 bits_per_sample = av_get_bits_per_sample(ctx->codec_id);
1304 bit_rate = bits_per_sample ? ctx->sample_rate * ctx->channels * bits_per_sample : ctx->bit_rate;
1313 int attribute_align_arg ff_codec_open2_recursive(AVCodecContext *avctx, const AVCodec *codec, AVDictionary **options)
1317 ff_unlock_avcodec();
1319 ret = avcodec_open2(avctx, codec, options);
1321 ff_lock_avcodec(avctx, codec);
1325 int attribute_align_arg avcodec_open2(AVCodecContext *avctx, const AVCodec *codec, AVDictionary **options)
1328 AVDictionary *tmp = NULL;
1330 if (avcodec_is_open(avctx))
1333 if ((!codec && !avctx->codec)) {
1334 av_log(avctx, AV_LOG_ERROR, "No codec provided to avcodec_open2()\n");
1335 return AVERROR(EINVAL);
1337 if ((codec && avctx->codec && codec != avctx->codec)) {
1338 av_log(avctx, AV_LOG_ERROR, "This AVCodecContext was allocated for %s, "
1339 "but %s passed to avcodec_open2()\n", avctx->codec->name, codec->name);
1340 return AVERROR(EINVAL);
1343 codec = avctx->codec;
1345 if (avctx->extradata_size < 0 || avctx->extradata_size >= FF_MAX_EXTRADATA_SIZE)
1346 return AVERROR(EINVAL);
1349 av_dict_copy(&tmp, *options, 0);
1351 ret = ff_lock_avcodec(avctx, codec);
1355 avctx->internal = av_mallocz(sizeof(AVCodecInternal));
1356 if (!avctx->internal) {
1357 ret = AVERROR(ENOMEM);
1361 avctx->internal->pool = av_mallocz(sizeof(*avctx->internal->pool));
1362 if (!avctx->internal->pool) {
1363 ret = AVERROR(ENOMEM);
1367 avctx->internal->to_free = av_frame_alloc();
1368 if (!avctx->internal->to_free) {
1369 ret = AVERROR(ENOMEM);
1373 if (codec->priv_data_size > 0) {
1374 if (!avctx->priv_data) {
1375 avctx->priv_data = av_mallocz(codec->priv_data_size);
1376 if (!avctx->priv_data) {
1377 ret = AVERROR(ENOMEM);
1380 if (codec->priv_class) {
1381 *(const AVClass **)avctx->priv_data = codec->priv_class;
1382 av_opt_set_defaults(avctx->priv_data);
1385 if (codec->priv_class && (ret = av_opt_set_dict(avctx->priv_data, &tmp)) < 0)
1388 avctx->priv_data = NULL;
1390 if ((ret = av_opt_set_dict(avctx, &tmp)) < 0)
1393 if (avctx->codec_whitelist && av_match_list(codec->name, avctx->codec_whitelist, ',') <= 0) {
1394 av_log(avctx, AV_LOG_ERROR, "Codec (%s) not on whitelist\n", codec->name);
1395 ret = AVERROR(EINVAL);
1399 // only call ff_set_dimensions() for non H.264/VP6F codecs so as not to overwrite previously setup dimensions
1400 if (!(avctx->coded_width && avctx->coded_height && avctx->width && avctx->height &&
1401 (avctx->codec_id == AV_CODEC_ID_H264 || avctx->codec_id == AV_CODEC_ID_VP6F))) {
1402 if (avctx->coded_width && avctx->coded_height)
1403 ret = ff_set_dimensions(avctx, avctx->coded_width, avctx->coded_height);
1404 else if (avctx->width && avctx->height)
1405 ret = ff_set_dimensions(avctx, avctx->width, avctx->height);
1410 if ((avctx->coded_width || avctx->coded_height || avctx->width || avctx->height)
1411 && ( av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx) < 0
1412 || av_image_check_size(avctx->width, avctx->height, 0, avctx) < 0)) {
1413 av_log(avctx, AV_LOG_WARNING, "Ignoring invalid width/height values\n");
1414 ff_set_dimensions(avctx, 0, 0);
1417 if (avctx->width > 0 && avctx->height > 0) {
1418 if (av_image_check_sar(avctx->width, avctx->height,
1419 avctx->sample_aspect_ratio) < 0) {
1420 av_log(avctx, AV_LOG_WARNING, "ignoring invalid SAR: %u/%u\n",
1421 avctx->sample_aspect_ratio.num,
1422 avctx->sample_aspect_ratio.den);
1423 avctx->sample_aspect_ratio = (AVRational){ 0, 1 };
1427 /* if the decoder init function was already called previously,
1428 * free the already allocated subtitle_header before overwriting it */
1429 if (av_codec_is_decoder(codec))
1430 av_freep(&avctx->subtitle_header);
1432 if (avctx->channels > FF_SANE_NB_CHANNELS) {
1433 ret = AVERROR(EINVAL);
1437 avctx->codec = codec;
1438 if ((avctx->codec_type == AVMEDIA_TYPE_UNKNOWN || avctx->codec_type == codec->type) &&
1439 avctx->codec_id == AV_CODEC_ID_NONE) {
1440 avctx->codec_type = codec->type;
1441 avctx->codec_id = codec->id;
1443 if (avctx->codec_id != codec->id || (avctx->codec_type != codec->type
1444 && avctx->codec_type != AVMEDIA_TYPE_ATTACHMENT)) {
1445 av_log(avctx, AV_LOG_ERROR, "Codec type or id mismatches\n");
1446 ret = AVERROR(EINVAL);
1449 avctx->frame_number = 0;
1450 avctx->codec_descriptor = avcodec_descriptor_get(avctx->codec_id);
1452 if (avctx->codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
1453 avctx->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
1454 const char *codec_string = av_codec_is_encoder(codec) ? "encoder" : "decoder";
1456 av_log(avctx, AV_LOG_ERROR,
1457 "The %s '%s' is experimental but experimental codecs are not enabled, "
1458 "add '-strict %d' if you want to use it.\n",
1459 codec_string, codec->name, FF_COMPLIANCE_EXPERIMENTAL);
1460 codec2 = av_codec_is_encoder(codec) ? avcodec_find_encoder(codec->id) : avcodec_find_decoder(codec->id);
1461 if (!(codec2->capabilities & CODEC_CAP_EXPERIMENTAL))
1462 av_log(avctx, AV_LOG_ERROR, "Alternatively use the non experimental %s '%s'.\n",
1463 codec_string, codec2->name);
1464 ret = AVERROR_EXPERIMENTAL;
1468 if (avctx->codec_type == AVMEDIA_TYPE_AUDIO &&
1469 (!avctx->time_base.num || !avctx->time_base.den)) {
1470 avctx->time_base.num = 1;
1471 avctx->time_base.den = avctx->sample_rate;
1475 av_log(avctx, AV_LOG_WARNING, "Warning: not compiled with thread support, using thread emulation\n");
1477 if (CONFIG_FRAME_THREAD_ENCODER) {
1478 ff_unlock_avcodec(); //we will instanciate a few encoders thus kick the counter to prevent false detection of a problem
1479 ret = ff_frame_thread_encoder_init(avctx, options ? *options : NULL);
1480 ff_lock_avcodec(avctx, codec);
1486 && !(avctx->internal->frame_thread_encoder && (avctx->active_thread_type&FF_THREAD_FRAME))) {
1487 ret = ff_thread_init(avctx);
1492 if (!HAVE_THREADS && !(codec->capabilities & CODEC_CAP_AUTO_THREADS))
1493 avctx->thread_count = 1;
1495 if (avctx->codec->max_lowres < avctx->lowres || avctx->lowres < 0) {
1496 av_log(avctx, AV_LOG_ERROR, "The maximum value for lowres supported by the decoder is %d\n",
1497 avctx->codec->max_lowres);
1498 ret = AVERROR(EINVAL);
1503 if (avctx->debug_mv)
1504 av_log(avctx, AV_LOG_WARNING, "The 'vismv' option is deprecated, "
1505 "see the codecview filter instead.\n");
1508 if (av_codec_is_encoder(avctx->codec)) {
1510 if (avctx->codec->sample_fmts) {
1511 for (i = 0; avctx->codec->sample_fmts[i] != AV_SAMPLE_FMT_NONE; i++) {
1512 if (avctx->sample_fmt == avctx->codec->sample_fmts[i])
1514 if (avctx->channels == 1 &&
1515 av_get_planar_sample_fmt(avctx->sample_fmt) ==
1516 av_get_planar_sample_fmt(avctx->codec->sample_fmts[i])) {
1517 avctx->sample_fmt = avctx->codec->sample_fmts[i];
1521 if (avctx->codec->sample_fmts[i] == AV_SAMPLE_FMT_NONE) {
1523 snprintf(buf, sizeof(buf), "%d", avctx->sample_fmt);
1524 av_log(avctx, AV_LOG_ERROR, "Specified sample format %s is invalid or not supported\n",
1525 (char *)av_x_if_null(av_get_sample_fmt_name(avctx->sample_fmt), buf));
1526 ret = AVERROR(EINVAL);
1530 if (avctx->codec->pix_fmts) {
1531 for (i = 0; avctx->codec->pix_fmts[i] != AV_PIX_FMT_NONE; i++)
1532 if (avctx->pix_fmt == avctx->codec->pix_fmts[i])
1534 if (avctx->codec->pix_fmts[i] == AV_PIX_FMT_NONE
1535 && !((avctx->codec_id == AV_CODEC_ID_MJPEG || avctx->codec_id == AV_CODEC_ID_LJPEG)
1536 && avctx->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL)) {
1538 snprintf(buf, sizeof(buf), "%d", avctx->pix_fmt);
1539 av_log(avctx, AV_LOG_ERROR, "Specified pixel format %s is invalid or not supported\n",
1540 (char *)av_x_if_null(av_get_pix_fmt_name(avctx->pix_fmt), buf));
1541 ret = AVERROR(EINVAL);
1544 if (avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ420P ||
1545 avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ411P ||
1546 avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ422P ||
1547 avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ440P ||
1548 avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ444P)
1549 avctx->color_range = AVCOL_RANGE_JPEG;
1551 if (avctx->codec->supported_samplerates) {
1552 for (i = 0; avctx->codec->supported_samplerates[i] != 0; i++)
1553 if (avctx->sample_rate == avctx->codec->supported_samplerates[i])
1555 if (avctx->codec->supported_samplerates[i] == 0) {
1556 av_log(avctx, AV_LOG_ERROR, "Specified sample rate %d is not supported\n",
1557 avctx->sample_rate);
1558 ret = AVERROR(EINVAL);
1562 if (avctx->codec->channel_layouts) {
1563 if (!avctx->channel_layout) {
1564 av_log(avctx, AV_LOG_WARNING, "Channel layout not specified\n");
1566 for (i = 0; avctx->codec->channel_layouts[i] != 0; i++)
1567 if (avctx->channel_layout == avctx->codec->channel_layouts[i])
1569 if (avctx->codec->channel_layouts[i] == 0) {
1571 av_get_channel_layout_string(buf, sizeof(buf), -1, avctx->channel_layout);
1572 av_log(avctx, AV_LOG_ERROR, "Specified channel layout '%s' is not supported\n", buf);
1573 ret = AVERROR(EINVAL);
1578 if (avctx->channel_layout && avctx->channels) {
1579 int channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
1580 if (channels != avctx->channels) {
1582 av_get_channel_layout_string(buf, sizeof(buf), -1, avctx->channel_layout);
1583 av_log(avctx, AV_LOG_ERROR,
1584 "Channel layout '%s' with %d channels does not match number of specified channels %d\n",
1585 buf, channels, avctx->channels);
1586 ret = AVERROR(EINVAL);
1589 } else if (avctx->channel_layout) {
1590 avctx->channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
1592 if(avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
1593 if (avctx->width <= 0 || avctx->height <= 0) {
1594 av_log(avctx, AV_LOG_ERROR, "dimensions not set\n");
1595 ret = AVERROR(EINVAL);
1599 if ( (avctx->codec_type == AVMEDIA_TYPE_VIDEO || avctx->codec_type == AVMEDIA_TYPE_AUDIO)
1600 && avctx->bit_rate>0 && avctx->bit_rate<1000) {
1601 av_log(avctx, AV_LOG_WARNING, "Bitrate %d is extremely low, maybe you mean %dk\n", avctx->bit_rate, avctx->bit_rate);
1604 if (!avctx->rc_initial_buffer_occupancy)
1605 avctx->rc_initial_buffer_occupancy = avctx->rc_buffer_size * 3 / 4;
1608 avctx->pts_correction_num_faulty_pts =
1609 avctx->pts_correction_num_faulty_dts = 0;
1610 avctx->pts_correction_last_pts =
1611 avctx->pts_correction_last_dts = INT64_MIN;
1613 if ( avctx->codec->init && (!(avctx->active_thread_type&FF_THREAD_FRAME)
1614 || avctx->internal->frame_thread_encoder)) {
1615 ret = avctx->codec->init(avctx);
1623 #if FF_API_AUDIOENC_DELAY
1624 if (av_codec_is_encoder(avctx->codec))
1625 avctx->delay = avctx->initial_padding;
1628 if (av_codec_is_decoder(avctx->codec)) {
1629 if (!avctx->bit_rate)
1630 avctx->bit_rate = get_bit_rate(avctx);
1631 /* validate channel layout from the decoder */
1632 if (avctx->channel_layout) {
1633 int channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
1634 if (!avctx->channels)
1635 avctx->channels = channels;
1636 else if (channels != avctx->channels) {
1638 av_get_channel_layout_string(buf, sizeof(buf), -1, avctx->channel_layout);
1639 av_log(avctx, AV_LOG_WARNING,
1640 "Channel layout '%s' with %d channels does not match specified number of channels %d: "
1641 "ignoring specified channel layout\n",
1642 buf, channels, avctx->channels);
1643 avctx->channel_layout = 0;
1646 if (avctx->channels && avctx->channels < 0 ||
1647 avctx->channels > FF_SANE_NB_CHANNELS) {
1648 ret = AVERROR(EINVAL);
1651 if (avctx->sub_charenc) {
1652 if (avctx->codec_type != AVMEDIA_TYPE_SUBTITLE) {
1653 av_log(avctx, AV_LOG_ERROR, "Character encoding is only "
1654 "supported with subtitles codecs\n");
1655 ret = AVERROR(EINVAL);
1657 } else if (avctx->codec_descriptor->props & AV_CODEC_PROP_BITMAP_SUB) {
1658 av_log(avctx, AV_LOG_WARNING, "Codec '%s' is bitmap-based, "
1659 "subtitles character encoding will be ignored\n",
1660 avctx->codec_descriptor->name);
1661 avctx->sub_charenc_mode = FF_SUB_CHARENC_MODE_DO_NOTHING;
1663 /* input character encoding is set for a text based subtitle
1664 * codec at this point */
1665 if (avctx->sub_charenc_mode == FF_SUB_CHARENC_MODE_AUTOMATIC)
1666 avctx->sub_charenc_mode = FF_SUB_CHARENC_MODE_PRE_DECODER;
1668 if (avctx->sub_charenc_mode == FF_SUB_CHARENC_MODE_PRE_DECODER) {
1670 iconv_t cd = iconv_open("UTF-8", avctx->sub_charenc);
1671 if (cd == (iconv_t)-1) {
1672 ret = AVERROR(errno);
1673 av_log(avctx, AV_LOG_ERROR, "Unable to open iconv context "
1674 "with input character encoding \"%s\"\n", avctx->sub_charenc);
1679 av_log(avctx, AV_LOG_ERROR, "Character encoding subtitles "
1680 "conversion needs a libavcodec built with iconv support "
1681 "for this codec\n");
1682 ret = AVERROR(ENOSYS);
1689 #if FF_API_AVCTX_TIMEBASE
1690 if (avctx->framerate.num > 0 && avctx->framerate.den > 0)
1691 avctx->time_base = av_inv_q(av_mul_q(avctx->framerate, (AVRational){avctx->ticks_per_frame, 1}));
1694 if (codec->priv_data_size > 0 && avctx->priv_data && codec->priv_class) {
1695 av_assert0(*(const AVClass **)avctx->priv_data == codec->priv_class);
1699 ff_unlock_avcodec();
1701 av_dict_free(options);
1708 (avctx->codec->caps_internal & FF_CODEC_CAP_INIT_CLEANUP))
1709 avctx->codec->close(avctx);
1712 if (codec->priv_class && codec->priv_data_size)
1713 av_opt_free(avctx->priv_data);
1714 av_freep(&avctx->priv_data);
1715 if (avctx->internal) {
1716 av_frame_free(&avctx->internal->to_free);
1717 av_freep(&avctx->internal->pool);
1719 av_freep(&avctx->internal);
1720 avctx->codec = NULL;
1724 int ff_alloc_packet2(AVCodecContext *avctx, AVPacket *avpkt, int64_t size)
1726 if (avpkt->size < 0) {
1727 av_log(avctx, AV_LOG_ERROR, "Invalid negative user packet size %d\n", avpkt->size);
1728 return AVERROR(EINVAL);
1730 if (size < 0 || size > INT_MAX - FF_INPUT_BUFFER_PADDING_SIZE) {
1731 av_log(avctx, AV_LOG_ERROR, "Invalid minimum required packet size %"PRId64" (max allowed is %d)\n",
1732 size, INT_MAX - FF_INPUT_BUFFER_PADDING_SIZE);
1733 return AVERROR(EINVAL);
1737 av_assert0(!avpkt->data || avpkt->data != avctx->internal->byte_buffer);
1738 if (!avpkt->data || avpkt->size < size) {
1739 av_fast_padded_malloc(&avctx->internal->byte_buffer, &avctx->internal->byte_buffer_size, size);
1740 avpkt->data = avctx->internal->byte_buffer;
1741 avpkt->size = avctx->internal->byte_buffer_size;
1742 #if FF_API_DESTRUCT_PACKET
1743 FF_DISABLE_DEPRECATION_WARNINGS
1744 avpkt->destruct = NULL;
1745 FF_ENABLE_DEPRECATION_WARNINGS
1751 AVBufferRef *buf = avpkt->buf;
1752 #if FF_API_DESTRUCT_PACKET
1753 FF_DISABLE_DEPRECATION_WARNINGS
1754 void *destruct = avpkt->destruct;
1755 FF_ENABLE_DEPRECATION_WARNINGS
1758 if (avpkt->size < size) {
1759 av_log(avctx, AV_LOG_ERROR, "User packet is too small (%d < %"PRId64")\n", avpkt->size, size);
1760 return AVERROR(EINVAL);
1763 av_init_packet(avpkt);
1764 #if FF_API_DESTRUCT_PACKET
1765 FF_DISABLE_DEPRECATION_WARNINGS
1766 avpkt->destruct = destruct;
1767 FF_ENABLE_DEPRECATION_WARNINGS
1773 int ret = av_new_packet(avpkt, size);
1775 av_log(avctx, AV_LOG_ERROR, "Failed to allocate packet of size %"PRId64"\n", size);
1780 int ff_alloc_packet(AVPacket *avpkt, int size)
1782 return ff_alloc_packet2(NULL, avpkt, size);
1786 * Pad last frame with silence.
1788 static int pad_last_frame(AVCodecContext *s, AVFrame **dst, const AVFrame *src)
1790 AVFrame *frame = NULL;
1793 if (!(frame = av_frame_alloc()))
1794 return AVERROR(ENOMEM);
1796 frame->format = src->format;
1797 frame->channel_layout = src->channel_layout;
1798 av_frame_set_channels(frame, av_frame_get_channels(src));
1799 frame->nb_samples = s->frame_size;
1800 ret = av_frame_get_buffer(frame, 32);
1804 ret = av_frame_copy_props(frame, src);
1808 if ((ret = av_samples_copy(frame->extended_data, src->extended_data, 0, 0,
1809 src->nb_samples, s->channels, s->sample_fmt)) < 0)
1811 if ((ret = av_samples_set_silence(frame->extended_data, src->nb_samples,
1812 frame->nb_samples - src->nb_samples,
1813 s->channels, s->sample_fmt)) < 0)
1821 av_frame_free(&frame);
1825 int attribute_align_arg avcodec_encode_audio2(AVCodecContext *avctx,
1827 const AVFrame *frame,
1828 int *got_packet_ptr)
1830 AVFrame *extended_frame = NULL;
1831 AVFrame *padded_frame = NULL;
1833 AVPacket user_pkt = *avpkt;
1834 int needs_realloc = !user_pkt.data;
1836 *got_packet_ptr = 0;
1838 if (!(avctx->codec->capabilities & CODEC_CAP_DELAY) && !frame) {
1839 av_free_packet(avpkt);
1840 av_init_packet(avpkt);
1844 /* ensure that extended_data is properly set */
1845 if (frame && !frame->extended_data) {
1846 if (av_sample_fmt_is_planar(avctx->sample_fmt) &&
1847 avctx->channels > AV_NUM_DATA_POINTERS) {
1848 av_log(avctx, AV_LOG_ERROR, "Encoding to a planar sample format, "
1849 "with more than %d channels, but extended_data is not set.\n",
1850 AV_NUM_DATA_POINTERS);
1851 return AVERROR(EINVAL);
1853 av_log(avctx, AV_LOG_WARNING, "extended_data is not set.\n");
1855 extended_frame = av_frame_alloc();
1856 if (!extended_frame)
1857 return AVERROR(ENOMEM);
1859 memcpy(extended_frame, frame, sizeof(AVFrame));
1860 extended_frame->extended_data = extended_frame->data;
1861 frame = extended_frame;
1864 /* extract audio service type metadata */
1866 AVFrameSideData *sd = av_frame_get_side_data(frame, AV_FRAME_DATA_AUDIO_SERVICE_TYPE);
1867 if (sd && sd->size >= sizeof(enum AVAudioServiceType))
1868 avctx->audio_service_type = *(enum AVAudioServiceType*)sd->data;
1871 /* check for valid frame size */
1873 if (avctx->codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME) {
1874 if (frame->nb_samples > avctx->frame_size) {
1875 av_log(avctx, AV_LOG_ERROR, "more samples than frame size (avcodec_encode_audio2)\n");
1876 ret = AVERROR(EINVAL);
1879 } else if (!(avctx->codec->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE)) {
1880 if (frame->nb_samples < avctx->frame_size &&
1881 !avctx->internal->last_audio_frame) {
1882 ret = pad_last_frame(avctx, &padded_frame, frame);
1886 frame = padded_frame;
1887 avctx->internal->last_audio_frame = 1;
1890 if (frame->nb_samples != avctx->frame_size) {
1891 av_log(avctx, AV_LOG_ERROR, "nb_samples (%d) != frame_size (%d) (avcodec_encode_audio2)\n", frame->nb_samples, avctx->frame_size);
1892 ret = AVERROR(EINVAL);
1898 ret = avctx->codec->encode2(avctx, avpkt, frame, got_packet_ptr);
1900 if (*got_packet_ptr) {
1901 if (!(avctx->codec->capabilities & CODEC_CAP_DELAY)) {
1902 if (avpkt->pts == AV_NOPTS_VALUE)
1903 avpkt->pts = frame->pts;
1904 if (!avpkt->duration)
1905 avpkt->duration = ff_samples_to_time_base(avctx,
1908 avpkt->dts = avpkt->pts;
1913 if (avpkt->data && avpkt->data == avctx->internal->byte_buffer) {
1915 if (user_pkt.data) {
1916 if (user_pkt.size >= avpkt->size) {
1917 memcpy(user_pkt.data, avpkt->data, avpkt->size);
1919 av_log(avctx, AV_LOG_ERROR, "Provided packet is too small, needs to be %d\n", avpkt->size);
1920 avpkt->size = user_pkt.size;
1923 avpkt->buf = user_pkt.buf;
1924 avpkt->data = user_pkt.data;
1925 #if FF_API_DESTRUCT_PACKET
1926 FF_DISABLE_DEPRECATION_WARNINGS
1927 avpkt->destruct = user_pkt.destruct;
1928 FF_ENABLE_DEPRECATION_WARNINGS
1931 if (av_dup_packet(avpkt) < 0) {
1932 ret = AVERROR(ENOMEM);
1938 if (needs_realloc && avpkt->data) {
1939 ret = av_buffer_realloc(&avpkt->buf, avpkt->size + FF_INPUT_BUFFER_PADDING_SIZE);
1941 avpkt->data = avpkt->buf->data;
1944 avctx->frame_number++;
1947 if (ret < 0 || !*got_packet_ptr) {
1948 av_free_packet(avpkt);
1949 av_init_packet(avpkt);
1953 /* NOTE: if we add any audio encoders which output non-keyframe packets,
1954 * this needs to be moved to the encoders, but for now we can do it
1955 * here to simplify things */
1956 avpkt->flags |= AV_PKT_FLAG_KEY;
1959 av_frame_free(&padded_frame);
1960 av_free(extended_frame);
1962 #if FF_API_AUDIOENC_DELAY
1963 avctx->delay = avctx->initial_padding;
1969 #if FF_API_OLD_ENCODE_AUDIO
1970 int attribute_align_arg avcodec_encode_audio(AVCodecContext *avctx,
1971 uint8_t *buf, int buf_size,
1972 const short *samples)
1976 int ret, samples_size, got_packet;
1978 av_init_packet(&pkt);
1980 pkt.size = buf_size;
1983 frame = av_frame_alloc();
1985 return AVERROR(ENOMEM);
1987 if (avctx->frame_size) {
1988 frame->nb_samples = avctx->frame_size;
1990 /* if frame_size is not set, the number of samples must be
1991 * calculated from the buffer size */
1993 if (!av_get_bits_per_sample(avctx->codec_id)) {
1994 av_log(avctx, AV_LOG_ERROR, "avcodec_encode_audio() does not "
1995 "support this codec\n");
1996 av_frame_free(&frame);
1997 return AVERROR(EINVAL);
1999 nb_samples = (int64_t)buf_size * 8 /
2000 (av_get_bits_per_sample(avctx->codec_id) *
2002 if (nb_samples >= INT_MAX) {
2003 av_frame_free(&frame);
2004 return AVERROR(EINVAL);
2006 frame->nb_samples = nb_samples;
2009 /* it is assumed that the samples buffer is large enough based on the
2010 * relevant parameters */
2011 samples_size = av_samples_get_buffer_size(NULL, avctx->channels,
2013 avctx->sample_fmt, 1);
2014 if ((ret = avcodec_fill_audio_frame(frame, avctx->channels,
2016 (const uint8_t *)samples,
2017 samples_size, 1)) < 0) {
2018 av_frame_free(&frame);
2022 /* fabricate frame pts from sample count.
2023 * this is needed because the avcodec_encode_audio() API does not have
2024 * a way for the user to provide pts */
2025 if (avctx->sample_rate && avctx->time_base.num)
2026 frame->pts = ff_samples_to_time_base(avctx,
2027 avctx->internal->sample_count);
2029 frame->pts = AV_NOPTS_VALUE;
2030 avctx->internal->sample_count += frame->nb_samples;
2036 ret = avcodec_encode_audio2(avctx, &pkt, frame, &got_packet);
2037 if (!ret && got_packet && avctx->coded_frame) {
2038 avctx->coded_frame->pts = pkt.pts;
2039 avctx->coded_frame->key_frame = !!(pkt.flags & AV_PKT_FLAG_KEY);
2041 /* free any side data since we cannot return it */
2042 av_packet_free_side_data(&pkt);
2044 if (frame && frame->extended_data != frame->data)
2045 av_freep(&frame->extended_data);
2047 av_frame_free(&frame);
2048 return ret ? ret : pkt.size;
2053 #if FF_API_OLD_ENCODE_VIDEO
2054 int attribute_align_arg avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
2055 const AVFrame *pict)
2058 int ret, got_packet = 0;
2060 if (buf_size < FF_MIN_BUFFER_SIZE) {
2061 av_log(avctx, AV_LOG_ERROR, "buffer smaller than minimum size\n");
2065 av_init_packet(&pkt);
2067 pkt.size = buf_size;
2069 ret = avcodec_encode_video2(avctx, &pkt, pict, &got_packet);
2070 if (!ret && got_packet && avctx->coded_frame) {
2071 avctx->coded_frame->pts = pkt.pts;
2072 avctx->coded_frame->key_frame = !!(pkt.flags & AV_PKT_FLAG_KEY);
2075 /* free any side data since we cannot return it */
2076 if (pkt.side_data_elems > 0) {
2078 for (i = 0; i < pkt.side_data_elems; i++)
2079 av_free(pkt.side_data[i].data);
2080 av_freep(&pkt.side_data);
2081 pkt.side_data_elems = 0;
2084 return ret ? ret : pkt.size;
2089 int attribute_align_arg avcodec_encode_video2(AVCodecContext *avctx,
2091 const AVFrame *frame,
2092 int *got_packet_ptr)
2095 AVPacket user_pkt = *avpkt;
2096 int needs_realloc = !user_pkt.data;
2098 *got_packet_ptr = 0;
2100 if(CONFIG_FRAME_THREAD_ENCODER &&
2101 avctx->internal->frame_thread_encoder && (avctx->active_thread_type&FF_THREAD_FRAME))
2102 return ff_thread_video_encode_frame(avctx, avpkt, frame, got_packet_ptr);
2104 if ((avctx->flags&CODEC_FLAG_PASS1) && avctx->stats_out)
2105 avctx->stats_out[0] = '\0';
2107 if (!(avctx->codec->capabilities & CODEC_CAP_DELAY) && !frame) {
2108 av_free_packet(avpkt);
2109 av_init_packet(avpkt);
2114 if (av_image_check_size(avctx->width, avctx->height, 0, avctx))
2115 return AVERROR(EINVAL);
2117 if (frame && frame->format == AV_PIX_FMT_NONE)
2118 av_log(avctx, AV_LOG_WARNING, "AVFrame.format is not set\n");
2119 if (frame && (frame->width == 0 || frame->height == 0))
2120 av_log(avctx, AV_LOG_WARNING, "AVFrame.width or height is not set\n");
2122 av_assert0(avctx->codec->encode2);
2124 ret = avctx->codec->encode2(avctx, avpkt, frame, got_packet_ptr);
2125 av_assert0(ret <= 0);
2127 if (avpkt->data && avpkt->data == avctx->internal->byte_buffer) {
2129 if (user_pkt.data) {
2130 if (user_pkt.size >= avpkt->size) {
2131 memcpy(user_pkt.data, avpkt->data, avpkt->size);
2133 av_log(avctx, AV_LOG_ERROR, "Provided packet is too small, needs to be %d\n", avpkt->size);
2134 avpkt->size = user_pkt.size;
2137 avpkt->buf = user_pkt.buf;
2138 avpkt->data = user_pkt.data;
2139 #if FF_API_DESTRUCT_PACKET
2140 FF_DISABLE_DEPRECATION_WARNINGS
2141 avpkt->destruct = user_pkt.destruct;
2142 FF_ENABLE_DEPRECATION_WARNINGS
2145 if (av_dup_packet(avpkt) < 0) {
2146 ret = AVERROR(ENOMEM);
2152 if (!*got_packet_ptr)
2154 else if (!(avctx->codec->capabilities & CODEC_CAP_DELAY))
2155 avpkt->pts = avpkt->dts = frame->pts;
2157 if (needs_realloc && avpkt->data) {
2158 ret = av_buffer_realloc(&avpkt->buf, avpkt->size + FF_INPUT_BUFFER_PADDING_SIZE);
2160 avpkt->data = avpkt->buf->data;
2163 avctx->frame_number++;
2166 if (ret < 0 || !*got_packet_ptr)
2167 av_free_packet(avpkt);
2169 av_packet_merge_side_data(avpkt);
2175 int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size,
2176 const AVSubtitle *sub)
2179 if (sub->start_display_time) {
2180 av_log(avctx, AV_LOG_ERROR, "start_display_time must be 0.\n");
2184 ret = avctx->codec->encode_sub(avctx, buf, buf_size, sub);
2185 avctx->frame_number++;
2190 * Attempt to guess proper monotonic timestamps for decoded video frames
2191 * which might have incorrect times. Input timestamps may wrap around, in
2192 * which case the output will as well.
2194 * @param pts the pts field of the decoded AVPacket, as passed through
2196 * @param dts the dts field of the decoded AVPacket
2197 * @return one of the input values, may be AV_NOPTS_VALUE
2199 static int64_t guess_correct_pts(AVCodecContext *ctx,
2200 int64_t reordered_pts, int64_t dts)
2202 int64_t pts = AV_NOPTS_VALUE;
2204 if (dts != AV_NOPTS_VALUE) {
2205 ctx->pts_correction_num_faulty_dts += dts <= ctx->pts_correction_last_dts;
2206 ctx->pts_correction_last_dts = dts;
2207 } else if (reordered_pts != AV_NOPTS_VALUE)
2208 ctx->pts_correction_last_dts = reordered_pts;
2210 if (reordered_pts != AV_NOPTS_VALUE) {
2211 ctx->pts_correction_num_faulty_pts += reordered_pts <= ctx->pts_correction_last_pts;
2212 ctx->pts_correction_last_pts = reordered_pts;
2213 } else if(dts != AV_NOPTS_VALUE)
2214 ctx->pts_correction_last_pts = dts;
2216 if ((ctx->pts_correction_num_faulty_pts<=ctx->pts_correction_num_faulty_dts || dts == AV_NOPTS_VALUE)
2217 && reordered_pts != AV_NOPTS_VALUE)
2218 pts = reordered_pts;
2225 static int apply_param_change(AVCodecContext *avctx, AVPacket *avpkt)
2228 const uint8_t *data;
2231 data = av_packet_get_side_data(avpkt, AV_PKT_DATA_PARAM_CHANGE, &size);
2235 if (!(avctx->codec->capabilities & CODEC_CAP_PARAM_CHANGE)) {
2236 av_log(avctx, AV_LOG_ERROR, "This decoder does not support parameter "
2237 "changes, but PARAM_CHANGE side data was sent to it.\n");
2238 return AVERROR(EINVAL);
2244 flags = bytestream_get_le32(&data);
2247 if (flags & AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_COUNT) {
2250 avctx->channels = bytestream_get_le32(&data);
2253 if (flags & AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_LAYOUT) {
2256 avctx->channel_layout = bytestream_get_le64(&data);
2259 if (flags & AV_SIDE_DATA_PARAM_CHANGE_SAMPLE_RATE) {
2262 avctx->sample_rate = bytestream_get_le32(&data);
2265 if (flags & AV_SIDE_DATA_PARAM_CHANGE_DIMENSIONS) {
2268 avctx->width = bytestream_get_le32(&data);
2269 avctx->height = bytestream_get_le32(&data);
2271 ret = ff_set_dimensions(avctx, avctx->width, avctx->height);
2278 av_log(avctx, AV_LOG_ERROR, "PARAM_CHANGE side data too small.\n");
2279 return AVERROR_INVALIDDATA;
2282 static int add_metadata_from_side_data(AVCodecContext *avctx, AVFrame *frame)
2285 const uint8_t *side_metadata;
2287 AVDictionary **frame_md = avpriv_frame_get_metadatap(frame);
2289 side_metadata = av_packet_get_side_data(avctx->internal->pkt,
2290 AV_PKT_DATA_STRINGS_METADATA, &size);
2291 return av_packet_unpack_dictionary(side_metadata, size, frame_md);
2294 static int unrefcount_frame(AVCodecInternal *avci, AVFrame *frame)
2298 /* move the original frame to our backup */
2299 av_frame_unref(avci->to_free);
2300 av_frame_move_ref(avci->to_free, frame);
2302 /* now copy everything except the AVBufferRefs back
2303 * note that we make a COPY of the side data, so calling av_frame_free() on
2304 * the caller's frame will work properly */
2305 ret = av_frame_copy_props(frame, avci->to_free);
2309 memcpy(frame->data, avci->to_free->data, sizeof(frame->data));
2310 memcpy(frame->linesize, avci->to_free->linesize, sizeof(frame->linesize));
2311 if (avci->to_free->extended_data != avci->to_free->data) {
2312 int planes = av_frame_get_channels(avci->to_free);
2313 int size = planes * sizeof(*frame->extended_data);
2316 av_frame_unref(frame);
2320 frame->extended_data = av_malloc(size);
2321 if (!frame->extended_data) {
2322 av_frame_unref(frame);
2323 return AVERROR(ENOMEM);
2325 memcpy(frame->extended_data, avci->to_free->extended_data,
2328 frame->extended_data = frame->data;
2330 frame->format = avci->to_free->format;
2331 frame->width = avci->to_free->width;
2332 frame->height = avci->to_free->height;
2333 frame->channel_layout = avci->to_free->channel_layout;
2334 frame->nb_samples = avci->to_free->nb_samples;
2335 av_frame_set_channels(frame, av_frame_get_channels(avci->to_free));
2340 int attribute_align_arg avcodec_decode_video2(AVCodecContext *avctx, AVFrame *picture,
2341 int *got_picture_ptr,
2342 const AVPacket *avpkt)
2344 AVCodecInternal *avci = avctx->internal;
2346 // copy to ensure we do not change avpkt
2347 AVPacket tmp = *avpkt;
2350 return AVERROR(EINVAL);
2351 if (avctx->codec->type != AVMEDIA_TYPE_VIDEO) {
2352 av_log(avctx, AV_LOG_ERROR, "Invalid media type for video\n");
2353 return AVERROR(EINVAL);
2356 *got_picture_ptr = 0;
2357 if ((avctx->coded_width || avctx->coded_height) && av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx))
2358 return AVERROR(EINVAL);
2360 av_frame_unref(picture);
2362 if ((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size || (avctx->active_thread_type & FF_THREAD_FRAME)) {
2363 int did_split = av_packet_split_side_data(&tmp);
2364 ret = apply_param_change(avctx, &tmp);
2366 av_log(avctx, AV_LOG_ERROR, "Error applying parameter changes.\n");
2367 if (avctx->err_recognition & AV_EF_EXPLODE)
2371 avctx->internal->pkt = &tmp;
2372 if (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME)
2373 ret = ff_thread_decode_frame(avctx, picture, got_picture_ptr,
2376 ret = avctx->codec->decode(avctx, picture, got_picture_ptr,
2378 picture->pkt_dts = avpkt->dts;
2380 if(!avctx->has_b_frames){
2381 av_frame_set_pkt_pos(picture, avpkt->pos);
2383 //FIXME these should be under if(!avctx->has_b_frames)
2384 /* get_buffer is supposed to set frame parameters */
2385 if (!(avctx->codec->capabilities & CODEC_CAP_DR1)) {
2386 if (!picture->sample_aspect_ratio.num) picture->sample_aspect_ratio = avctx->sample_aspect_ratio;
2387 if (!picture->width) picture->width = avctx->width;
2388 if (!picture->height) picture->height = avctx->height;
2389 if (picture->format == AV_PIX_FMT_NONE) picture->format = avctx->pix_fmt;
2392 add_metadata_from_side_data(avctx, picture);
2395 emms_c(); //needed to avoid an emms_c() call before every return;
2397 avctx->internal->pkt = NULL;
2399 av_packet_free_side_data(&tmp);
2404 if (*got_picture_ptr) {
2405 if (!avctx->refcounted_frames) {
2406 int err = unrefcount_frame(avci, picture);
2411 avctx->frame_number++;
2412 av_frame_set_best_effort_timestamp(picture,
2413 guess_correct_pts(avctx,
2417 av_frame_unref(picture);
2421 /* many decoders assign whole AVFrames, thus overwriting extended_data;
2422 * make sure it's set correctly */
2423 av_assert0(!picture->extended_data || picture->extended_data == picture->data);
2425 #if FF_API_AVCTX_TIMEBASE
2426 if (avctx->framerate.num > 0 && avctx->framerate.den > 0)
2427 avctx->time_base = av_inv_q(av_mul_q(avctx->framerate, (AVRational){avctx->ticks_per_frame, 1}));
2433 #if FF_API_OLD_DECODE_AUDIO
2434 int attribute_align_arg avcodec_decode_audio3(AVCodecContext *avctx, int16_t *samples,
2435 int *frame_size_ptr,
2438 AVFrame *frame = av_frame_alloc();
2439 int ret, got_frame = 0;
2442 return AVERROR(ENOMEM);
2443 if (avctx->get_buffer != avcodec_default_get_buffer) {
2444 av_log(avctx, AV_LOG_ERROR, "Custom get_buffer() for use with"
2445 "avcodec_decode_audio3() detected. Overriding with avcodec_default_get_buffer\n");
2446 av_log(avctx, AV_LOG_ERROR, "Please port your application to "
2447 "avcodec_decode_audio4()\n");
2448 avctx->get_buffer = avcodec_default_get_buffer;
2449 avctx->release_buffer = avcodec_default_release_buffer;
2452 ret = avcodec_decode_audio4(avctx, frame, &got_frame, avpkt);
2454 if (ret >= 0 && got_frame) {
2456 int planar = av_sample_fmt_is_planar(avctx->sample_fmt);
2457 int data_size = av_samples_get_buffer_size(&plane_size, avctx->channels,
2459 avctx->sample_fmt, 1);
2460 if (*frame_size_ptr < data_size) {
2461 av_log(avctx, AV_LOG_ERROR, "output buffer size is too small for "
2462 "the current frame (%d < %d)\n", *frame_size_ptr, data_size);
2463 av_frame_free(&frame);
2464 return AVERROR(EINVAL);
2467 memcpy(samples, frame->extended_data[0], plane_size);
2469 if (planar && avctx->channels > 1) {
2470 uint8_t *out = ((uint8_t *)samples) + plane_size;
2471 for (ch = 1; ch < avctx->channels; ch++) {
2472 memcpy(out, frame->extended_data[ch], plane_size);
2476 *frame_size_ptr = data_size;
2478 *frame_size_ptr = 0;
2480 av_frame_free(&frame);
2486 int attribute_align_arg avcodec_decode_audio4(AVCodecContext *avctx,
2489 const AVPacket *avpkt)
2491 AVCodecInternal *avci = avctx->internal;
2496 if (!avpkt->data && avpkt->size) {
2497 av_log(avctx, AV_LOG_ERROR, "invalid packet: NULL data, size != 0\n");
2498 return AVERROR(EINVAL);
2501 return AVERROR(EINVAL);
2502 if (avctx->codec->type != AVMEDIA_TYPE_AUDIO) {
2503 av_log(avctx, AV_LOG_ERROR, "Invalid media type for audio\n");
2504 return AVERROR(EINVAL);
2507 av_frame_unref(frame);
2509 if ((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size || (avctx->active_thread_type & FF_THREAD_FRAME)) {
2512 uint32_t discard_padding = 0;
2513 uint8_t skip_reason = 0;
2514 uint8_t discard_reason = 0;
2515 // copy to ensure we do not change avpkt
2516 AVPacket tmp = *avpkt;
2517 int did_split = av_packet_split_side_data(&tmp);
2518 ret = apply_param_change(avctx, &tmp);
2520 av_log(avctx, AV_LOG_ERROR, "Error applying parameter changes.\n");
2521 if (avctx->err_recognition & AV_EF_EXPLODE)
2525 avctx->internal->pkt = &tmp;
2526 if (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME)
2527 ret = ff_thread_decode_frame(avctx, frame, got_frame_ptr, &tmp);
2529 ret = avctx->codec->decode(avctx, frame, got_frame_ptr, &tmp);
2530 frame->pkt_dts = avpkt->dts;
2532 if (ret >= 0 && *got_frame_ptr) {
2533 add_metadata_from_side_data(avctx, frame);
2534 avctx->frame_number++;
2535 av_frame_set_best_effort_timestamp(frame,
2536 guess_correct_pts(avctx,
2539 if (frame->format == AV_SAMPLE_FMT_NONE)
2540 frame->format = avctx->sample_fmt;
2541 if (!frame->channel_layout)
2542 frame->channel_layout = avctx->channel_layout;
2543 if (!av_frame_get_channels(frame))
2544 av_frame_set_channels(frame, avctx->channels);
2545 if (!frame->sample_rate)
2546 frame->sample_rate = avctx->sample_rate;
2549 side= av_packet_get_side_data(avctx->internal->pkt, AV_PKT_DATA_SKIP_SAMPLES, &side_size);
2550 if(side && side_size>=10) {
2551 avctx->internal->skip_samples = AV_RL32(side);
2552 av_log(avctx, AV_LOG_DEBUG, "skip %d samples due to side data\n",
2553 avctx->internal->skip_samples);
2554 discard_padding = AV_RL32(side + 4);
2555 skip_reason = AV_RL8(side + 8);
2556 discard_reason = AV_RL8(side + 9);
2558 if (avctx->internal->skip_samples && *got_frame_ptr &&
2559 !(avctx->flags2 & CODEC_FLAG2_SKIP_MANUAL)) {
2560 if(frame->nb_samples <= avctx->internal->skip_samples){
2562 avctx->internal->skip_samples -= frame->nb_samples;
2563 av_log(avctx, AV_LOG_DEBUG, "skip whole frame, skip left: %d\n",
2564 avctx->internal->skip_samples);
2566 av_samples_copy(frame->extended_data, frame->extended_data, 0, avctx->internal->skip_samples,
2567 frame->nb_samples - avctx->internal->skip_samples, avctx->channels, frame->format);
2568 if(avctx->pkt_timebase.num && avctx->sample_rate) {
2569 int64_t diff_ts = av_rescale_q(avctx->internal->skip_samples,
2570 (AVRational){1, avctx->sample_rate},
2571 avctx->pkt_timebase);
2572 if(frame->pkt_pts!=AV_NOPTS_VALUE)
2573 frame->pkt_pts += diff_ts;
2574 if(frame->pkt_dts!=AV_NOPTS_VALUE)
2575 frame->pkt_dts += diff_ts;
2576 if (av_frame_get_pkt_duration(frame) >= diff_ts)
2577 av_frame_set_pkt_duration(frame, av_frame_get_pkt_duration(frame) - diff_ts);
2579 av_log(avctx, AV_LOG_WARNING, "Could not update timestamps for skipped samples.\n");
2581 av_log(avctx, AV_LOG_DEBUG, "skip %d/%d samples\n",
2582 avctx->internal->skip_samples, frame->nb_samples);
2583 frame->nb_samples -= avctx->internal->skip_samples;
2584 avctx->internal->skip_samples = 0;
2588 if (discard_padding > 0 && discard_padding <= frame->nb_samples && *got_frame_ptr &&
2589 !(avctx->flags2 & CODEC_FLAG2_SKIP_MANUAL)) {
2590 if (discard_padding == frame->nb_samples) {
2593 if(avctx->pkt_timebase.num && avctx->sample_rate) {
2594 int64_t diff_ts = av_rescale_q(frame->nb_samples - discard_padding,
2595 (AVRational){1, avctx->sample_rate},
2596 avctx->pkt_timebase);
2597 if (av_frame_get_pkt_duration(frame) >= diff_ts)
2598 av_frame_set_pkt_duration(frame, av_frame_get_pkt_duration(frame) - diff_ts);
2600 av_log(avctx, AV_LOG_WARNING, "Could not update timestamps for discarded samples.\n");
2602 av_log(avctx, AV_LOG_DEBUG, "discard %d/%d samples\n",
2603 discard_padding, frame->nb_samples);
2604 frame->nb_samples -= discard_padding;
2608 if ((avctx->flags2 & CODEC_FLAG2_SKIP_MANUAL) && *got_frame_ptr) {
2609 AVFrameSideData *fside = av_frame_new_side_data(frame, AV_FRAME_DATA_SKIP_SAMPLES, 10);
2611 AV_WL32(fside->data, avctx->internal->skip_samples);
2612 AV_WL32(fside->data + 4, discard_padding);
2613 AV_WL8(fside->data + 8, skip_reason);
2614 AV_WL8(fside->data + 9, discard_reason);
2615 avctx->internal->skip_samples = 0;
2619 avctx->internal->pkt = NULL;
2621 av_packet_free_side_data(&tmp);
2626 if (ret >= 0 && *got_frame_ptr) {
2627 if (!avctx->refcounted_frames) {
2628 int err = unrefcount_frame(avci, frame);
2633 av_frame_unref(frame);
2639 #define UTF8_MAX_BYTES 4 /* 5 and 6 bytes sequences should not be used */
2640 static int recode_subtitle(AVCodecContext *avctx,
2641 AVPacket *outpkt, const AVPacket *inpkt)
2644 iconv_t cd = (iconv_t)-1;
2651 if (avctx->sub_charenc_mode != FF_SUB_CHARENC_MODE_PRE_DECODER || inpkt->size == 0)
2655 cd = iconv_open("UTF-8", avctx->sub_charenc);
2656 av_assert0(cd != (iconv_t)-1);
2661 if (inl >= INT_MAX / UTF8_MAX_BYTES - FF_INPUT_BUFFER_PADDING_SIZE) {
2662 av_log(avctx, AV_LOG_ERROR, "Subtitles packet is too big for recoding\n");
2663 ret = AVERROR(ENOMEM);
2667 ret = av_new_packet(&tmp, inl * UTF8_MAX_BYTES);
2670 outpkt->buf = tmp.buf;
2671 outpkt->data = tmp.data;
2672 outpkt->size = tmp.size;
2673 outb = outpkt->data;
2674 outl = outpkt->size;
2676 if (iconv(cd, &inb, &inl, &outb, &outl) == (size_t)-1 ||
2677 iconv(cd, NULL, NULL, &outb, &outl) == (size_t)-1 ||
2678 outl >= outpkt->size || inl != 0) {
2679 ret = FFMIN(AVERROR(errno), -1);
2680 av_log(avctx, AV_LOG_ERROR, "Unable to recode subtitle event \"%s\" "
2681 "from %s to UTF-8\n", inpkt->data, avctx->sub_charenc);
2682 av_free_packet(&tmp);
2685 outpkt->size -= outl;
2686 memset(outpkt->data + outpkt->size, 0, outl);
2689 if (cd != (iconv_t)-1)
2693 av_log(avctx, AV_LOG_ERROR, "requesting subtitles recoding without iconv");
2694 return AVERROR(EINVAL);
2698 static int utf8_check(const uint8_t *str)
2700 const uint8_t *byte;
2701 uint32_t codepoint, min;
2705 GET_UTF8(codepoint, *(byte++), return 0;);
2706 min = byte - str == 1 ? 0 : byte - str == 2 ? 0x80 :
2707 1 << (5 * (byte - str) - 4);
2708 if (codepoint < min || codepoint >= 0x110000 ||
2709 codepoint == 0xFFFE /* BOM */ ||
2710 codepoint >= 0xD800 && codepoint <= 0xDFFF /* surrogates */)
2717 int avcodec_decode_subtitle2(AVCodecContext *avctx, AVSubtitle *sub,
2723 if (!avpkt->data && avpkt->size) {
2724 av_log(avctx, AV_LOG_ERROR, "invalid packet: NULL data, size != 0\n");
2725 return AVERROR(EINVAL);
2728 return AVERROR(EINVAL);
2729 if (avctx->codec->type != AVMEDIA_TYPE_SUBTITLE) {
2730 av_log(avctx, AV_LOG_ERROR, "Invalid media type for subtitles\n");
2731 return AVERROR(EINVAL);
2735 get_subtitle_defaults(sub);
2737 if ((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size) {
2738 AVPacket pkt_recoded;
2739 AVPacket tmp = *avpkt;
2740 int did_split = av_packet_split_side_data(&tmp);
2741 //apply_param_change(avctx, &tmp);
2744 /* FFMIN() prevents overflow in case the packet wasn't allocated with
2746 * If the side data is smaller than the buffer padding size, the
2747 * remaining bytes should have already been filled with zeros by the
2748 * original packet allocation anyway. */
2749 memset(tmp.data + tmp.size, 0,
2750 FFMIN(avpkt->size - tmp.size, FF_INPUT_BUFFER_PADDING_SIZE));
2754 ret = recode_subtitle(avctx, &pkt_recoded, &tmp);
2758 avctx->internal->pkt = &pkt_recoded;
2760 if (avctx->pkt_timebase.den && avpkt->pts != AV_NOPTS_VALUE)
2761 sub->pts = av_rescale_q(avpkt->pts,
2762 avctx->pkt_timebase, AV_TIME_BASE_Q);
2763 ret = avctx->codec->decode(avctx, sub, got_sub_ptr, &pkt_recoded);
2764 av_assert1((ret >= 0) >= !!*got_sub_ptr &&
2765 !!*got_sub_ptr >= !!sub->num_rects);
2767 if (sub->num_rects && !sub->end_display_time && avpkt->duration &&
2768 avctx->pkt_timebase.num) {
2769 AVRational ms = { 1, 1000 };
2770 sub->end_display_time = av_rescale_q(avpkt->duration,
2771 avctx->pkt_timebase, ms);
2774 for (i = 0; i < sub->num_rects; i++) {
2775 if (sub->rects[i]->ass && !utf8_check(sub->rects[i]->ass)) {
2776 av_log(avctx, AV_LOG_ERROR,
2777 "Invalid UTF-8 in decoded subtitles text; "
2778 "maybe missing -sub_charenc option\n");
2779 avsubtitle_free(sub);
2780 return AVERROR_INVALIDDATA;
2784 if (tmp.data != pkt_recoded.data) { // did we recode?
2785 /* prevent from destroying side data from original packet */
2786 pkt_recoded.side_data = NULL;
2787 pkt_recoded.side_data_elems = 0;
2789 av_free_packet(&pkt_recoded);
2791 if (avctx->codec_descriptor->props & AV_CODEC_PROP_BITMAP_SUB)
2793 else if (avctx->codec_descriptor->props & AV_CODEC_PROP_TEXT_SUB)
2795 avctx->internal->pkt = NULL;
2799 av_packet_free_side_data(&tmp);
2805 avctx->frame_number++;
2811 void avsubtitle_free(AVSubtitle *sub)
2815 for (i = 0; i < sub->num_rects; i++) {
2816 av_freep(&sub->rects[i]->pict.data[0]);
2817 av_freep(&sub->rects[i]->pict.data[1]);
2818 av_freep(&sub->rects[i]->pict.data[2]);
2819 av_freep(&sub->rects[i]->pict.data[3]);
2820 av_freep(&sub->rects[i]->text);
2821 av_freep(&sub->rects[i]->ass);
2822 av_freep(&sub->rects[i]);
2825 av_freep(&sub->rects);
2827 memset(sub, 0, sizeof(AVSubtitle));
2830 av_cold int avcodec_close(AVCodecContext *avctx)
2835 if (avcodec_is_open(avctx)) {
2836 FramePool *pool = avctx->internal->pool;
2838 if (CONFIG_FRAME_THREAD_ENCODER &&
2839 avctx->internal->frame_thread_encoder && avctx->thread_count > 1) {
2840 ff_frame_thread_encoder_free(avctx);
2842 if (HAVE_THREADS && avctx->internal->thread_ctx)
2843 ff_thread_free(avctx);
2844 if (avctx->codec && avctx->codec->close)
2845 avctx->codec->close(avctx);
2846 avctx->coded_frame = NULL;
2847 avctx->internal->byte_buffer_size = 0;
2848 av_freep(&avctx->internal->byte_buffer);
2849 av_frame_free(&avctx->internal->to_free);
2850 for (i = 0; i < FF_ARRAY_ELEMS(pool->pools); i++)
2851 av_buffer_pool_uninit(&pool->pools[i]);
2852 av_freep(&avctx->internal->pool);
2854 if (avctx->hwaccel && avctx->hwaccel->uninit)
2855 avctx->hwaccel->uninit(avctx);
2856 av_freep(&avctx->internal->hwaccel_priv_data);
2858 av_freep(&avctx->internal);
2861 if (avctx->priv_data && avctx->codec && avctx->codec->priv_class)
2862 av_opt_free(avctx->priv_data);
2864 av_freep(&avctx->priv_data);
2865 if (av_codec_is_encoder(avctx->codec))
2866 av_freep(&avctx->extradata);
2867 avctx->codec = NULL;
2868 avctx->active_thread_type = 0;
2873 static enum AVCodecID remap_deprecated_codec_id(enum AVCodecID id)
2876 //This is for future deprecatec codec ids, its empty since
2877 //last major bump but will fill up again over time, please don't remove it
2878 // case AV_CODEC_ID_UTVIDEO_DEPRECATED: return AV_CODEC_ID_UTVIDEO;
2879 case AV_CODEC_ID_BRENDER_PIX_DEPRECATED : return AV_CODEC_ID_BRENDER_PIX;
2880 case AV_CODEC_ID_OPUS_DEPRECATED : return AV_CODEC_ID_OPUS;
2881 case AV_CODEC_ID_TAK_DEPRECATED : return AV_CODEC_ID_TAK;
2882 case AV_CODEC_ID_PAF_AUDIO_DEPRECATED : return AV_CODEC_ID_PAF_AUDIO;
2883 case AV_CODEC_ID_PCM_S24LE_PLANAR_DEPRECATED : return AV_CODEC_ID_PCM_S24LE_PLANAR;
2884 case AV_CODEC_ID_PCM_S32LE_PLANAR_DEPRECATED : return AV_CODEC_ID_PCM_S32LE_PLANAR;
2885 case AV_CODEC_ID_ADPCM_VIMA_DEPRECATED : return AV_CODEC_ID_ADPCM_VIMA;
2886 case AV_CODEC_ID_ESCAPE130_DEPRECATED : return AV_CODEC_ID_ESCAPE130;
2887 case AV_CODEC_ID_EXR_DEPRECATED : return AV_CODEC_ID_EXR;
2888 case AV_CODEC_ID_G2M_DEPRECATED : return AV_CODEC_ID_G2M;
2889 case AV_CODEC_ID_PAF_VIDEO_DEPRECATED : return AV_CODEC_ID_PAF_VIDEO;
2890 case AV_CODEC_ID_WEBP_DEPRECATED : return AV_CODEC_ID_WEBP;
2891 case AV_CODEC_ID_HEVC_DEPRECATED : return AV_CODEC_ID_HEVC;
2892 case AV_CODEC_ID_MVC1_DEPRECATED : return AV_CODEC_ID_MVC1;
2893 case AV_CODEC_ID_MVC2_DEPRECATED : return AV_CODEC_ID_MVC2;
2894 case AV_CODEC_ID_SANM_DEPRECATED : return AV_CODEC_ID_SANM;
2895 case AV_CODEC_ID_SGIRLE_DEPRECATED : return AV_CODEC_ID_SGIRLE;
2896 case AV_CODEC_ID_VP7_DEPRECATED : return AV_CODEC_ID_VP7;
2897 default : return id;
2901 static AVCodec *find_encdec(enum AVCodecID id, int encoder)
2903 AVCodec *p, *experimental = NULL;
2905 id= remap_deprecated_codec_id(id);
2907 if ((encoder ? av_codec_is_encoder(p) : av_codec_is_decoder(p)) &&
2909 if (p->capabilities & CODEC_CAP_EXPERIMENTAL && !experimental) {
2916 return experimental;
2919 AVCodec *avcodec_find_encoder(enum AVCodecID id)
2921 return find_encdec(id, 1);
2924 AVCodec *avcodec_find_encoder_by_name(const char *name)
2931 if (av_codec_is_encoder(p) && strcmp(name, p->name) == 0)
2938 AVCodec *avcodec_find_decoder(enum AVCodecID id)
2940 return find_encdec(id, 0);
2943 AVCodec *avcodec_find_decoder_by_name(const char *name)
2950 if (av_codec_is_decoder(p) && strcmp(name, p->name) == 0)
2957 const char *avcodec_get_name(enum AVCodecID id)
2959 const AVCodecDescriptor *cd;
2962 if (id == AV_CODEC_ID_NONE)
2964 cd = avcodec_descriptor_get(id);
2967 av_log(NULL, AV_LOG_WARNING, "Codec 0x%x is not in the full list.\n", id);
2968 codec = avcodec_find_decoder(id);
2971 codec = avcodec_find_encoder(id);
2974 return "unknown_codec";
2977 size_t av_get_codec_tag_string(char *buf, size_t buf_size, unsigned int codec_tag)
2979 int i, len, ret = 0;
2981 #define TAG_PRINT(x) \
2982 (((x) >= '0' && (x) <= '9') || \
2983 ((x) >= 'a' && (x) <= 'z') || ((x) >= 'A' && (x) <= 'Z') || \
2984 ((x) == '.' || (x) == ' ' || (x) == '-' || (x) == '_'))
2986 for (i = 0; i < 4; i++) {
2987 len = snprintf(buf, buf_size,
2988 TAG_PRINT(codec_tag & 0xFF) ? "%c" : "[%d]", codec_tag & 0xFF);
2990 buf_size = buf_size > len ? buf_size - len : 0;
2997 void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)
2999 const char *codec_type;
3000 const char *codec_name;
3001 const char *profile = NULL;
3005 AVRational display_aspect_ratio;
3006 const char *separator = enc->dump_separator ? (const char *)enc->dump_separator : ", ";
3008 if (!buf || buf_size <= 0)
3010 codec_type = av_get_media_type_string(enc->codec_type);
3011 codec_name = avcodec_get_name(enc->codec_id);
3012 if (enc->profile != FF_PROFILE_UNKNOWN) {
3016 p = encode ? avcodec_find_encoder(enc->codec_id) :
3017 avcodec_find_decoder(enc->codec_id);
3019 profile = av_get_profile_name(p, enc->profile);
3022 snprintf(buf, buf_size, "%s: %s", codec_type ? codec_type : "unknown",
3024 buf[0] ^= 'a' ^ 'A'; /* first letter in uppercase */
3026 if (enc->codec && strcmp(enc->codec->name, codec_name))
3027 snprintf(buf + strlen(buf), buf_size - strlen(buf), " (%s)", enc->codec->name);
3030 snprintf(buf + strlen(buf), buf_size - strlen(buf), " (%s)", profile);
3031 if ( enc->codec_type == AVMEDIA_TYPE_VIDEO
3032 && av_log_get_level() >= AV_LOG_VERBOSE
3034 snprintf(buf + strlen(buf), buf_size - strlen(buf),
3035 ", %d reference frame%s",
3036 enc->refs, enc->refs > 1 ? "s" : "");
3038 if (enc->codec_tag) {
3040 av_get_codec_tag_string(tag_buf, sizeof(tag_buf), enc->codec_tag);
3041 snprintf(buf + strlen(buf), buf_size - strlen(buf),
3042 " (%s / 0x%04X)", tag_buf, enc->codec_tag);
3045 switch (enc->codec_type) {
3046 case AVMEDIA_TYPE_VIDEO:
3048 char detail[256] = "(";
3050 av_strlcat(buf, separator, buf_size);
3052 snprintf(buf + strlen(buf), buf_size - strlen(buf),
3053 "%s", enc->pix_fmt == AV_PIX_FMT_NONE ? "none" :
3054 av_get_pix_fmt_name(enc->pix_fmt));
3055 if (enc->bits_per_raw_sample && enc->pix_fmt != AV_PIX_FMT_NONE &&
3056 enc->bits_per_raw_sample <= av_pix_fmt_desc_get(enc->pix_fmt)->comp[0].depth_minus1)
3057 av_strlcatf(detail, sizeof(detail), "%d bpc, ", enc->bits_per_raw_sample);
3058 if (enc->color_range != AVCOL_RANGE_UNSPECIFIED)
3059 av_strlcatf(detail, sizeof(detail), "%s, ",
3060 av_color_range_name(enc->color_range));
3062 if (enc->colorspace != AVCOL_SPC_UNSPECIFIED ||
3063 enc->color_primaries != AVCOL_PRI_UNSPECIFIED ||
3064 enc->color_trc != AVCOL_TRC_UNSPECIFIED) {
3065 if (enc->colorspace != (int)enc->color_primaries ||
3066 enc->colorspace != (int)enc->color_trc) {
3068 av_strlcatf(detail, sizeof(detail), "%s/%s/%s, ",
3069 av_color_space_name(enc->colorspace),
3070 av_color_primaries_name(enc->color_primaries),
3071 av_color_transfer_name(enc->color_trc));
3073 av_strlcatf(detail, sizeof(detail), "%s, ",
3074 av_get_colorspace_name(enc->colorspace));
3077 if (av_log_get_level() >= AV_LOG_DEBUG &&
3078 enc->chroma_sample_location != AVCHROMA_LOC_UNSPECIFIED)
3079 av_strlcatf(detail, sizeof(detail), "%s, ",
3080 av_chroma_location_name(enc->chroma_sample_location));
3082 if (strlen(detail) > 1) {
3083 detail[strlen(detail) - 2] = 0;
3084 av_strlcatf(buf, buf_size, "%s)", detail);
3089 av_strlcat(buf, new_line ? separator : ", ", buf_size);
3091 snprintf(buf + strlen(buf), buf_size - strlen(buf),
3093 enc->width, enc->height);
3095 if (av_log_get_level() >= AV_LOG_VERBOSE &&
3096 (enc->width != enc->coded_width ||
3097 enc->height != enc->coded_height))
3098 snprintf(buf + strlen(buf), buf_size - strlen(buf),
3099 " (%dx%d)", enc->coded_width, enc->coded_height);
3101 if (enc->sample_aspect_ratio.num) {
3102 av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
3103 enc->width * enc->sample_aspect_ratio.num,
3104 enc->height * enc->sample_aspect_ratio.den,
3106 snprintf(buf + strlen(buf), buf_size - strlen(buf),
3107 " [SAR %d:%d DAR %d:%d]",
3108 enc->sample_aspect_ratio.num, enc->sample_aspect_ratio.den,
3109 display_aspect_ratio.num, display_aspect_ratio.den);
3111 if (av_log_get_level() >= AV_LOG_DEBUG) {
3112 int g = av_gcd(enc->time_base.num, enc->time_base.den);
3113 snprintf(buf + strlen(buf), buf_size - strlen(buf),
3115 enc->time_base.num / g, enc->time_base.den / g);
3119 snprintf(buf + strlen(buf), buf_size - strlen(buf),
3120 ", q=%d-%d", enc->qmin, enc->qmax);
3123 case AVMEDIA_TYPE_AUDIO:
3124 av_strlcat(buf, separator, buf_size);
3126 if (enc->sample_rate) {
3127 snprintf(buf + strlen(buf), buf_size - strlen(buf),
3128 "%d Hz, ", enc->sample_rate);
3130 av_get_channel_layout_string(buf + strlen(buf), buf_size - strlen(buf), enc->channels, enc->channel_layout);
3131 if (enc->sample_fmt != AV_SAMPLE_FMT_NONE) {
3132 snprintf(buf + strlen(buf), buf_size - strlen(buf),
3133 ", %s", av_get_sample_fmt_name(enc->sample_fmt));
3135 if ( enc->bits_per_raw_sample > 0
3136 && enc->bits_per_raw_sample != av_get_bytes_per_sample(enc->sample_fmt) * 8)
3137 snprintf(buf + strlen(buf), buf_size - strlen(buf),
3138 " (%d bit)", enc->bits_per_raw_sample);
3140 case AVMEDIA_TYPE_DATA:
3141 if (av_log_get_level() >= AV_LOG_DEBUG) {
3142 int g = av_gcd(enc->time_base.num, enc->time_base.den);
3144 snprintf(buf + strlen(buf), buf_size - strlen(buf),
3146 enc->time_base.num / g, enc->time_base.den / g);
3149 case AVMEDIA_TYPE_SUBTITLE:
3151 snprintf(buf + strlen(buf), buf_size - strlen(buf),
3152 ", %dx%d", enc->width, enc->height);
3158 if (enc->flags & CODEC_FLAG_PASS1)
3159 snprintf(buf + strlen(buf), buf_size - strlen(buf),
3161 if (enc->flags & CODEC_FLAG_PASS2)
3162 snprintf(buf + strlen(buf), buf_size - strlen(buf),
3165 bitrate = get_bit_rate(enc);
3167 snprintf(buf + strlen(buf), buf_size - strlen(buf),
3168 ", %d kb/s", bitrate / 1000);
3169 } else if (enc->rc_max_rate > 0) {
3170 snprintf(buf + strlen(buf), buf_size - strlen(buf),
3171 ", max. %d kb/s", enc->rc_max_rate / 1000);
3175 const char *av_get_profile_name(const AVCodec *codec, int profile)
3178 if (profile == FF_PROFILE_UNKNOWN || !codec->profiles)
3181 for (p = codec->profiles; p->profile != FF_PROFILE_UNKNOWN; p++)
3182 if (p->profile == profile)
3188 unsigned avcodec_version(void)
3190 // av_assert0(AV_CODEC_ID_V410==164);
3191 av_assert0(AV_CODEC_ID_PCM_S8_PLANAR==65563);
3192 av_assert0(AV_CODEC_ID_ADPCM_G722==69660);
3193 // av_assert0(AV_CODEC_ID_BMV_AUDIO==86071);
3194 av_assert0(AV_CODEC_ID_SRT==94216);
3195 av_assert0(LIBAVCODEC_VERSION_MICRO >= 100);
3197 av_assert0(CODEC_ID_CLLC == AV_CODEC_ID_CLLC);
3198 av_assert0(CODEC_ID_PCM_S8_PLANAR == AV_CODEC_ID_PCM_S8_PLANAR);
3199 av_assert0(CODEC_ID_ADPCM_IMA_APC == AV_CODEC_ID_ADPCM_IMA_APC);
3200 av_assert0(CODEC_ID_ILBC == AV_CODEC_ID_ILBC);
3201 av_assert0(CODEC_ID_SRT == AV_CODEC_ID_SRT);
3202 return LIBAVCODEC_VERSION_INT;
3205 const char *avcodec_configuration(void)
3207 return FFMPEG_CONFIGURATION;
3210 const char *avcodec_license(void)
3212 #define LICENSE_PREFIX "libavcodec license: "
3213 return LICENSE_PREFIX FFMPEG_LICENSE + sizeof(LICENSE_PREFIX) - 1;
3216 void avcodec_flush_buffers(AVCodecContext *avctx)
3218 if (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME)
3219 ff_thread_flush(avctx);
3220 else if (avctx->codec->flush)
3221 avctx->codec->flush(avctx);
3223 avctx->pts_correction_last_pts =
3224 avctx->pts_correction_last_dts = INT64_MIN;
3226 if (!avctx->refcounted_frames)
3227 av_frame_unref(avctx->internal->to_free);
3230 int av_get_exact_bits_per_sample(enum AVCodecID codec_id)
3233 case AV_CODEC_ID_8SVX_EXP:
3234 case AV_CODEC_ID_8SVX_FIB:
3235 case AV_CODEC_ID_ADPCM_CT:
3236 case AV_CODEC_ID_ADPCM_IMA_APC:
3237 case AV_CODEC_ID_ADPCM_IMA_EA_SEAD:
3238 case AV_CODEC_ID_ADPCM_IMA_OKI:
3239 case AV_CODEC_ID_ADPCM_IMA_WS:
3240 case AV_CODEC_ID_ADPCM_G722:
3241 case AV_CODEC_ID_ADPCM_YAMAHA:
3243 case AV_CODEC_ID_DSD_LSBF:
3244 case AV_CODEC_ID_DSD_MSBF:
3245 case AV_CODEC_ID_DSD_LSBF_PLANAR:
3246 case AV_CODEC_ID_DSD_MSBF_PLANAR:
3247 case AV_CODEC_ID_PCM_ALAW:
3248 case AV_CODEC_ID_PCM_MULAW:
3249 case AV_CODEC_ID_PCM_S8:
3250 case AV_CODEC_ID_PCM_S8_PLANAR:
3251 case AV_CODEC_ID_PCM_U8:
3252 case AV_CODEC_ID_PCM_ZORK:
3254 case AV_CODEC_ID_PCM_S16BE:
3255 case AV_CODEC_ID_PCM_S16BE_PLANAR:
3256 case AV_CODEC_ID_PCM_S16LE:
3257 case AV_CODEC_ID_PCM_S16LE_PLANAR:
3258 case AV_CODEC_ID_PCM_U16BE:
3259 case AV_CODEC_ID_PCM_U16LE:
3261 case AV_CODEC_ID_PCM_S24DAUD:
3262 case AV_CODEC_ID_PCM_S24BE:
3263 case AV_CODEC_ID_PCM_S24LE:
3264 case AV_CODEC_ID_PCM_S24LE_PLANAR:
3265 case AV_CODEC_ID_PCM_U24BE:
3266 case AV_CODEC_ID_PCM_U24LE:
3268 case AV_CODEC_ID_PCM_S32BE:
3269 case AV_CODEC_ID_PCM_S32LE:
3270 case AV_CODEC_ID_PCM_S32LE_PLANAR:
3271 case AV_CODEC_ID_PCM_U32BE:
3272 case AV_CODEC_ID_PCM_U32LE:
3273 case AV_CODEC_ID_PCM_F32BE:
3274 case AV_CODEC_ID_PCM_F32LE:
3276 case AV_CODEC_ID_PCM_F64BE:
3277 case AV_CODEC_ID_PCM_F64LE:
3284 enum AVCodecID av_get_pcm_codec(enum AVSampleFormat fmt, int be)
3286 static const enum AVCodecID map[AV_SAMPLE_FMT_NB][2] = {
3287 [AV_SAMPLE_FMT_U8 ] = { AV_CODEC_ID_PCM_U8, AV_CODEC_ID_PCM_U8 },
3288 [AV_SAMPLE_FMT_S16 ] = { AV_CODEC_ID_PCM_S16LE, AV_CODEC_ID_PCM_S16BE },
3289 [AV_SAMPLE_FMT_S32 ] = { AV_CODEC_ID_PCM_S32LE, AV_CODEC_ID_PCM_S32BE },
3290 [AV_SAMPLE_FMT_FLT ] = { AV_CODEC_ID_PCM_F32LE, AV_CODEC_ID_PCM_F32BE },
3291 [AV_SAMPLE_FMT_DBL ] = { AV_CODEC_ID_PCM_F64LE, AV_CODEC_ID_PCM_F64BE },
3292 [AV_SAMPLE_FMT_U8P ] = { AV_CODEC_ID_PCM_U8, AV_CODEC_ID_PCM_U8 },
3293 [AV_SAMPLE_FMT_S16P] = { AV_CODEC_ID_PCM_S16LE, AV_CODEC_ID_PCM_S16BE },
3294 [AV_SAMPLE_FMT_S32P] = { AV_CODEC_ID_PCM_S32LE, AV_CODEC_ID_PCM_S32BE },
3295 [AV_SAMPLE_FMT_FLTP] = { AV_CODEC_ID_PCM_F32LE, AV_CODEC_ID_PCM_F32BE },
3296 [AV_SAMPLE_FMT_DBLP] = { AV_CODEC_ID_PCM_F64LE, AV_CODEC_ID_PCM_F64BE },
3298 if (fmt < 0 || fmt >= AV_SAMPLE_FMT_NB)
3299 return AV_CODEC_ID_NONE;
3300 if (be < 0 || be > 1)
3302 return map[fmt][be];
3305 int av_get_bits_per_sample(enum AVCodecID codec_id)
3308 case AV_CODEC_ID_ADPCM_SBPRO_2:
3310 case AV_CODEC_ID_ADPCM_SBPRO_3:
3312 case AV_CODEC_ID_ADPCM_SBPRO_4:
3313 case AV_CODEC_ID_ADPCM_IMA_WAV:
3314 case AV_CODEC_ID_ADPCM_IMA_QT:
3315 case AV_CODEC_ID_ADPCM_SWF:
3316 case AV_CODEC_ID_ADPCM_MS:
3319 return av_get_exact_bits_per_sample(codec_id);
3323 int av_get_audio_frame_duration(AVCodecContext *avctx, int frame_bytes)
3325 int id, sr, ch, ba, tag, bps;
3327 id = avctx->codec_id;
3328 sr = avctx->sample_rate;
3329 ch = avctx->channels;
3330 ba = avctx->block_align;
3331 tag = avctx->codec_tag;
3332 bps = av_get_exact_bits_per_sample(avctx->codec_id);
3334 /* codecs with an exact constant bits per sample */
3335 if (bps > 0 && ch > 0 && frame_bytes > 0 && ch < 32768 && bps < 32768)
3336 return (frame_bytes * 8LL) / (bps * ch);
3337 bps = avctx->bits_per_coded_sample;
3339 /* codecs with a fixed packet duration */
3341 case AV_CODEC_ID_ADPCM_ADX: return 32;
3342 case AV_CODEC_ID_ADPCM_IMA_QT: return 64;
3343 case AV_CODEC_ID_ADPCM_EA_XAS: return 128;
3344 case AV_CODEC_ID_AMR_NB:
3345 case AV_CODEC_ID_EVRC:
3346 case AV_CODEC_ID_GSM:
3347 case AV_CODEC_ID_QCELP:
3348 case AV_CODEC_ID_RA_288: return 160;
3349 case AV_CODEC_ID_AMR_WB:
3350 case AV_CODEC_ID_GSM_MS: return 320;
3351 case AV_CODEC_ID_MP1: return 384;
3352 case AV_CODEC_ID_ATRAC1: return 512;
3353 case AV_CODEC_ID_ATRAC3: return 1024;
3354 case AV_CODEC_ID_ATRAC3P: return 2048;
3355 case AV_CODEC_ID_MP2:
3356 case AV_CODEC_ID_MUSEPACK7: return 1152;
3357 case AV_CODEC_ID_AC3: return 1536;
3361 /* calc from sample rate */
3362 if (id == AV_CODEC_ID_TTA)
3363 return 256 * sr / 245;
3366 /* calc from sample rate and channels */
3367 if (id == AV_CODEC_ID_BINKAUDIO_DCT)
3368 return (480 << (sr / 22050)) / ch;
3373 /* calc from block_align */
3374 if (id == AV_CODEC_ID_SIPR) {
3376 case 20: return 160;
3377 case 19: return 144;
3378 case 29: return 288;
3379 case 37: return 480;
3381 } else if (id == AV_CODEC_ID_ILBC) {
3383 case 38: return 160;
3384 case 50: return 240;
3389 if (frame_bytes > 0) {
3390 /* calc from frame_bytes only */
3391 if (id == AV_CODEC_ID_TRUESPEECH)
3392 return 240 * (frame_bytes / 32);
3393 if (id == AV_CODEC_ID_NELLYMOSER)
3394 return 256 * (frame_bytes / 64);
3395 if (id == AV_CODEC_ID_RA_144)
3396 return 160 * (frame_bytes / 20);
3397 if (id == AV_CODEC_ID_G723_1)
3398 return 240 * (frame_bytes / 24);
3401 /* calc from frame_bytes and bits_per_coded_sample */
3402 if (id == AV_CODEC_ID_ADPCM_G726)
3403 return frame_bytes * 8 / bps;
3407 /* calc from frame_bytes and channels */
3409 case AV_CODEC_ID_ADPCM_AFC:
3410 return frame_bytes / (9 * ch) * 16;
3411 case AV_CODEC_ID_ADPCM_DTK:
3412 return frame_bytes / (16 * ch) * 28;
3413 case AV_CODEC_ID_ADPCM_4XM:
3414 case AV_CODEC_ID_ADPCM_IMA_ISS:
3415 return (frame_bytes - 4 * ch) * 2 / ch;
3416 case AV_CODEC_ID_ADPCM_IMA_SMJPEG:
3417 return (frame_bytes - 4) * 2 / ch;
3418 case AV_CODEC_ID_ADPCM_IMA_AMV:
3419 return (frame_bytes - 8) * 2 / ch;
3420 case AV_CODEC_ID_ADPCM_XA:
3421 return (frame_bytes / 128) * 224 / ch;
3422 case AV_CODEC_ID_INTERPLAY_DPCM:
3423 return (frame_bytes - 6 - ch) / ch;
3424 case AV_CODEC_ID_ROQ_DPCM:
3425 return (frame_bytes - 8) / ch;
3426 case AV_CODEC_ID_XAN_DPCM:
3427 return (frame_bytes - 2 * ch) / ch;
3428 case AV_CODEC_ID_MACE3:
3429 return 3 * frame_bytes / ch;
3430 case AV_CODEC_ID_MACE6:
3431 return 6 * frame_bytes / ch;
3432 case AV_CODEC_ID_PCM_LXF:
3433 return 2 * (frame_bytes / (5 * ch));
3434 case AV_CODEC_ID_IAC:
3435 case AV_CODEC_ID_IMC:
3436 return 4 * frame_bytes / ch;
3440 /* calc from frame_bytes, channels, and codec_tag */
3441 if (id == AV_CODEC_ID_SOL_DPCM) {
3443 return frame_bytes / ch;
3445 return frame_bytes * 2 / ch;
3450 /* calc from frame_bytes, channels, and block_align */
3451 int blocks = frame_bytes / ba;
3452 switch (avctx->codec_id) {
3453 case AV_CODEC_ID_ADPCM_IMA_WAV:
3454 if (bps < 2 || bps > 5)
3456 return blocks * (1 + (ba - 4 * ch) / (bps * ch) * 8);
3457 case AV_CODEC_ID_ADPCM_IMA_DK3:
3458 return blocks * (((ba - 16) * 2 / 3 * 4) / ch);
3459 case AV_CODEC_ID_ADPCM_IMA_DK4:
3460 return blocks * (1 + (ba - 4 * ch) * 2 / ch);
3461 case AV_CODEC_ID_ADPCM_IMA_RAD:
3462 return blocks * ((ba - 4 * ch) * 2 / ch);
3463 case AV_CODEC_ID_ADPCM_MS:
3464 return blocks * (2 + (ba - 7 * ch) * 2 / ch);
3469 /* calc from frame_bytes, channels, and bits_per_coded_sample */
3470 switch (avctx->codec_id) {
3471 case AV_CODEC_ID_PCM_DVD:
3474 return 2 * (frame_bytes / ((bps * 2 / 8) * ch));
3475 case AV_CODEC_ID_PCM_BLURAY:
3478 return frame_bytes / ((FFALIGN(ch, 2) * bps) / 8);
3479 case AV_CODEC_ID_S302M:
3480 return 2 * (frame_bytes / ((bps + 4) / 4)) / ch;
3486 /* Fall back on using frame_size */
3487 if (avctx->frame_size > 1 && frame_bytes)
3488 return avctx->frame_size;
3490 //For WMA we currently have no other means to calculate duration thus we
3491 //do it here by assuming CBR, which is true for all known cases.
3492 if (avctx->bit_rate>0 && frame_bytes>0 && avctx->sample_rate>0 && avctx->block_align>1) {
3493 if (avctx->codec_id == AV_CODEC_ID_WMAV1 || avctx->codec_id == AV_CODEC_ID_WMAV2)
3494 return (frame_bytes * 8LL * avctx->sample_rate) / avctx->bit_rate;
3501 int ff_thread_init(AVCodecContext *s)
3508 unsigned int av_xiphlacing(unsigned char *s, unsigned int v)
3522 int ff_match_2uint16(const uint16_t(*tab)[2], int size, int a, int b)
3525 for (i = 0; i < size && !(tab[i][0] == a && tab[i][1] == b); i++) ;
3529 #if FF_API_MISSING_SAMPLE
3530 FF_DISABLE_DEPRECATION_WARNINGS
3531 void av_log_missing_feature(void *avc, const char *feature, int want_sample)
3533 av_log(avc, AV_LOG_WARNING, "%s is not implemented. Update your FFmpeg "
3534 "version to the newest one from Git. If the problem still "
3535 "occurs, it means that your file has a feature which has not "
3536 "been implemented.\n", feature);
3538 av_log_ask_for_sample(avc, NULL);
3541 void av_log_ask_for_sample(void *avc, const char *msg, ...)
3543 va_list argument_list;
3545 va_start(argument_list, msg);
3548 av_vlog(avc, AV_LOG_WARNING, msg, argument_list);
3549 av_log(avc, AV_LOG_WARNING, "If you want to help, upload a sample "
3550 "of this file to ftp://upload.ffmpeg.org/incoming/ "
3551 "and contact the ffmpeg-devel mailing list. (ffmpeg-devel@ffmpeg.org)\n");
3553 va_end(argument_list);
3555 FF_ENABLE_DEPRECATION_WARNINGS
3556 #endif /* FF_API_MISSING_SAMPLE */
3558 static AVHWAccel *first_hwaccel = NULL;
3559 static AVHWAccel **last_hwaccel = &first_hwaccel;
3561 void av_register_hwaccel(AVHWAccel *hwaccel)
3563 AVHWAccel **p = last_hwaccel;
3564 hwaccel->next = NULL;
3565 while(*p || avpriv_atomic_ptr_cas((void * volatile *)p, NULL, hwaccel))
3567 last_hwaccel = &hwaccel->next;
3570 AVHWAccel *av_hwaccel_next(const AVHWAccel *hwaccel)
3572 return hwaccel ? hwaccel->next : first_hwaccel;
3575 int av_lockmgr_register(int (*cb)(void **mutex, enum AVLockOp op))
3578 // There is no good way to rollback a failure to destroy the
3579 // mutex, so we ignore failures.
3580 lockmgr_cb(&codec_mutex, AV_LOCK_DESTROY);
3581 lockmgr_cb(&avformat_mutex, AV_LOCK_DESTROY);
3584 avformat_mutex = NULL;
3588 void *new_codec_mutex = NULL;
3589 void *new_avformat_mutex = NULL;
3591 if (err = cb(&new_codec_mutex, AV_LOCK_CREATE)) {
3592 return err > 0 ? AVERROR_UNKNOWN : err;
3594 if (err = cb(&new_avformat_mutex, AV_LOCK_CREATE)) {
3595 // Ignore failures to destroy the newly created mutex.
3596 cb(&new_codec_mutex, AV_LOCK_DESTROY);
3597 return err > 0 ? AVERROR_UNKNOWN : err;
3600 codec_mutex = new_codec_mutex;
3601 avformat_mutex = new_avformat_mutex;
3607 int ff_lock_avcodec(AVCodecContext *log_ctx, const AVCodec *codec)
3610 if ((*lockmgr_cb)(&codec_mutex, AV_LOCK_OBTAIN))
3614 if (avpriv_atomic_int_add_and_fetch(&entangled_thread_counter, 1) != 1 &&
3615 !(codec->caps_internal & FF_CODEC_CAP_INIT_THREADSAFE)) {
3616 av_log(log_ctx, AV_LOG_ERROR,
3617 "Insufficient thread locking. At least %d threads are "
3618 "calling avcodec_open2() at the same time right now.\n",
3619 entangled_thread_counter);
3621 av_log(log_ctx, AV_LOG_ERROR, "No lock manager is set, please see av_lockmgr_register()\n");
3622 ff_avcodec_locked = 1;
3623 ff_unlock_avcodec();
3624 return AVERROR(EINVAL);
3626 av_assert0(!ff_avcodec_locked);
3627 ff_avcodec_locked = 1;
3631 int ff_unlock_avcodec(void)
3633 av_assert0(ff_avcodec_locked);
3634 ff_avcodec_locked = 0;
3635 avpriv_atomic_int_add_and_fetch(&entangled_thread_counter, -1);
3637 if ((*lockmgr_cb)(&codec_mutex, AV_LOCK_RELEASE))
3644 int avpriv_lock_avformat(void)
3647 if ((*lockmgr_cb)(&avformat_mutex, AV_LOCK_OBTAIN))
3653 int avpriv_unlock_avformat(void)
3656 if ((*lockmgr_cb)(&avformat_mutex, AV_LOCK_RELEASE))
3662 unsigned int avpriv_toupper4(unsigned int x)
3664 return av_toupper(x & 0xFF) +
3665 (av_toupper((x >> 8) & 0xFF) << 8) +
3666 (av_toupper((x >> 16) & 0xFF) << 16) +
3667 ((unsigned)av_toupper((x >> 24) & 0xFF) << 24);
3670 int ff_thread_ref_frame(ThreadFrame *dst, ThreadFrame *src)
3674 dst->owner = src->owner;
3676 ret = av_frame_ref(dst->f, src->f);
3680 av_assert0(!dst->progress);
3682 if (src->progress &&
3683 !(dst->progress = av_buffer_ref(src->progress))) {
3684 ff_thread_release_buffer(dst->owner, dst);
3685 return AVERROR(ENOMEM);
3693 enum AVPixelFormat ff_thread_get_format(AVCodecContext *avctx, const enum AVPixelFormat *fmt)
3695 return ff_get_format(avctx, fmt);
3698 int ff_thread_get_buffer(AVCodecContext *avctx, ThreadFrame *f, int flags)
3701 return ff_get_buffer(avctx, f->f, flags);
3704 void ff_thread_release_buffer(AVCodecContext *avctx, ThreadFrame *f)
3707 av_frame_unref(f->f);
3710 void ff_thread_finish_setup(AVCodecContext *avctx)
3714 void ff_thread_report_progress(ThreadFrame *f, int progress, int field)
3718 void ff_thread_await_progress(ThreadFrame *f, int progress, int field)
3722 int ff_thread_can_start_frame(AVCodecContext *avctx)
3727 int ff_alloc_entries(AVCodecContext *avctx, int count)
3732 void ff_reset_entries(AVCodecContext *avctx)
3736 void ff_thread_await_progress2(AVCodecContext *avctx, int field, int thread, int shift)
3740 void ff_thread_report_progress2(AVCodecContext *avctx, int field, int thread, int n)
3746 enum AVMediaType avcodec_get_type(enum AVCodecID codec_id)
3748 AVCodec *c= avcodec_find_decoder(codec_id);
3750 c= avcodec_find_encoder(codec_id);
3754 if (codec_id <= AV_CODEC_ID_NONE)
3755 return AVMEDIA_TYPE_UNKNOWN;
3756 else if (codec_id < AV_CODEC_ID_FIRST_AUDIO)
3757 return AVMEDIA_TYPE_VIDEO;
3758 else if (codec_id < AV_CODEC_ID_FIRST_SUBTITLE)
3759 return AVMEDIA_TYPE_AUDIO;
3760 else if (codec_id < AV_CODEC_ID_FIRST_UNKNOWN)
3761 return AVMEDIA_TYPE_SUBTITLE;
3763 return AVMEDIA_TYPE_UNKNOWN;
3766 int avcodec_is_open(AVCodecContext *s)
3768 return !!s->internal;
3771 int avpriv_bprint_to_extradata(AVCodecContext *avctx, struct AVBPrint *buf)
3776 ret = av_bprint_finalize(buf, &str);
3779 if (!av_bprint_is_complete(buf)) {
3781 return AVERROR(ENOMEM);
3784 avctx->extradata = str;
3785 /* Note: the string is NUL terminated (so extradata can be read as a
3786 * string), but the ending character is not accounted in the size (in
3787 * binary formats you are likely not supposed to mux that character). When
3788 * extradata is copied, it is also padded with FF_INPUT_BUFFER_PADDING_SIZE
3790 avctx->extradata_size = buf->len;
3794 const uint8_t *avpriv_find_start_code(const uint8_t *av_restrict p,
3796 uint32_t *av_restrict state)
3800 av_assert0(p <= end);
3804 for (i = 0; i < 3; i++) {
3805 uint32_t tmp = *state << 8;
3806 *state = tmp + *(p++);
3807 if (tmp == 0x100 || p == end)
3812 if (p[-1] > 1 ) p += 3;
3813 else if (p[-2] ) p += 2;
3814 else if (p[-3]|(p[-1]-1)) p++;
3821 p = FFMIN(p, end) - 4;
3822 *state = AV_RB32(p);