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_buffer_unref(&dummy_ref); \
955 av_frame_unref(frame); \
956 ret = AVERROR(ENOMEM); \
961 if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
962 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(frame->format);
964 planes = av_pix_fmt_count_planes(frame->format);
965 /* workaround for AVHWAccel plane count of 0, buf[0] is used as
966 check for allocated buffers: make libavcodec happy */
967 if (desc && desc->flags & AV_PIX_FMT_FLAG_HWACCEL)
969 if (!desc || planes <= 0) {
970 ret = AVERROR(EINVAL);
974 for (i = 0; i < planes; i++) {
975 int v_shift = (i == 1 || i == 2) ? desc->log2_chroma_h : 0;
976 int plane_size = (frame->height >> v_shift) * frame->linesize[i];
978 WRAP_PLANE(frame->buf[i], frame->data[i], plane_size);
981 int planar = av_sample_fmt_is_planar(frame->format);
982 planes = planar ? avctx->channels : 1;
984 if (planes > FF_ARRAY_ELEMS(frame->buf)) {
985 frame->nb_extended_buf = planes - FF_ARRAY_ELEMS(frame->buf);
986 frame->extended_buf = av_malloc_array(sizeof(*frame->extended_buf),
987 frame->nb_extended_buf);
988 if (!frame->extended_buf) {
989 ret = AVERROR(ENOMEM);
994 for (i = 0; i < FFMIN(planes, FF_ARRAY_ELEMS(frame->buf)); i++)
995 WRAP_PLANE(frame->buf[i], frame->extended_data[i], frame->linesize[0]);
997 for (i = 0; i < frame->nb_extended_buf; i++)
998 WRAP_PLANE(frame->extended_buf[i],
999 frame->extended_data[i + FF_ARRAY_ELEMS(frame->buf)],
1000 frame->linesize[0]);
1003 av_buffer_unref(&dummy_buf);
1006 frame->width = avctx->width;
1007 frame->height = avctx->height;
1012 avctx->release_buffer(avctx, frame);
1014 av_buffer_unref(&dummy_buf);
1017 FF_ENABLE_DEPRECATION_WARNINGS
1020 ret = avctx->get_buffer2(avctx, frame, flags);
1023 if (avctx->codec_type == AVMEDIA_TYPE_VIDEO && !override_dimensions) {
1024 frame->width = avctx->width;
1025 frame->height = avctx->height;
1031 int ff_get_buffer(AVCodecContext *avctx, AVFrame *frame, int flags)
1033 int ret = get_buffer_internal(avctx, frame, flags);
1035 av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
1039 static int reget_buffer_internal(AVCodecContext *avctx, AVFrame *frame)
1044 av_assert0(avctx->codec_type == AVMEDIA_TYPE_VIDEO);
1046 if (frame->data[0] && (frame->width != avctx->width || frame->height != avctx->height || frame->format != avctx->pix_fmt)) {
1047 av_log(avctx, AV_LOG_WARNING, "Picture changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s in reget buffer()\n",
1048 frame->width, frame->height, av_get_pix_fmt_name(frame->format), avctx->width, avctx->height, av_get_pix_fmt_name(avctx->pix_fmt));
1049 av_frame_unref(frame);
1052 ff_init_buffer_info(avctx, frame);
1054 if (!frame->data[0])
1055 return ff_get_buffer(avctx, frame, AV_GET_BUFFER_FLAG_REF);
1057 if (av_frame_is_writable(frame))
1058 return ff_decode_frame_props(avctx, frame);
1060 tmp = av_frame_alloc();
1062 return AVERROR(ENOMEM);
1064 av_frame_move_ref(tmp, frame);
1066 ret = ff_get_buffer(avctx, frame, AV_GET_BUFFER_FLAG_REF);
1068 av_frame_free(&tmp);
1072 av_frame_copy(frame, tmp);
1073 av_frame_free(&tmp);
1078 int ff_reget_buffer(AVCodecContext *avctx, AVFrame *frame)
1080 int ret = reget_buffer_internal(avctx, frame);
1082 av_log(avctx, AV_LOG_ERROR, "reget_buffer() failed\n");
1086 #if FF_API_GET_BUFFER
1087 void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic)
1089 av_assert0(s->codec_type == AVMEDIA_TYPE_VIDEO);
1091 av_frame_unref(pic);
1094 int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic)
1101 int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2), void *arg, int *ret, int count, int size)
1105 for (i = 0; i < count; i++) {
1106 int r = func(c, (char *)arg + i * size);
1113 int avcodec_default_execute2(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2, int jobnr, int threadnr), void *arg, int *ret, int count)
1117 for (i = 0; i < count; i++) {
1118 int r = func(c, arg, i, 0);
1125 enum AVPixelFormat avpriv_find_pix_fmt(const PixelFormatTag *tags,
1126 unsigned int fourcc)
1128 while (tags->pix_fmt >= 0) {
1129 if (tags->fourcc == fourcc)
1130 return tags->pix_fmt;
1133 return AV_PIX_FMT_NONE;
1136 static int is_hwaccel_pix_fmt(enum AVPixelFormat pix_fmt)
1138 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
1139 return desc->flags & AV_PIX_FMT_FLAG_HWACCEL;
1142 enum AVPixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum AVPixelFormat *fmt)
1144 while (*fmt != AV_PIX_FMT_NONE && is_hwaccel_pix_fmt(*fmt))
1149 static AVHWAccel *find_hwaccel(enum AVCodecID codec_id,
1150 enum AVPixelFormat pix_fmt)
1152 AVHWAccel *hwaccel = NULL;
1154 while ((hwaccel = av_hwaccel_next(hwaccel)))
1155 if (hwaccel->id == codec_id
1156 && hwaccel->pix_fmt == pix_fmt)
1161 static int setup_hwaccel(AVCodecContext *avctx,
1162 const enum AVPixelFormat fmt,
1165 AVHWAccel *hwa = find_hwaccel(avctx->codec_id, fmt);
1169 av_log(avctx, AV_LOG_ERROR,
1170 "Could not find an AVHWAccel for the pixel format: %s",
1172 return AVERROR(ENOENT);
1175 if (hwa->priv_data_size) {
1176 avctx->internal->hwaccel_priv_data = av_mallocz(hwa->priv_data_size);
1177 if (!avctx->internal->hwaccel_priv_data)
1178 return AVERROR(ENOMEM);
1182 ret = hwa->init(avctx);
1184 av_freep(&avctx->internal->hwaccel_priv_data);
1189 avctx->hwaccel = hwa;
1194 int ff_get_format(AVCodecContext *avctx, const enum AVPixelFormat *fmt)
1196 const AVPixFmtDescriptor *desc;
1197 enum AVPixelFormat *choices;
1198 enum AVPixelFormat ret;
1201 while (fmt[n] != AV_PIX_FMT_NONE)
1205 avctx->sw_pix_fmt = fmt[n - 1];
1206 av_assert2(!is_hwaccel_pix_fmt(avctx->sw_pix_fmt));
1208 choices = av_malloc_array(n + 1, sizeof(*choices));
1210 return AV_PIX_FMT_NONE;
1212 memcpy(choices, fmt, (n + 1) * sizeof(*choices));
1215 if (avctx->hwaccel && avctx->hwaccel->uninit)
1216 avctx->hwaccel->uninit(avctx);
1217 av_freep(&avctx->internal->hwaccel_priv_data);
1218 avctx->hwaccel = NULL;
1220 ret = avctx->get_format(avctx, choices);
1222 desc = av_pix_fmt_desc_get(ret);
1224 ret = AV_PIX_FMT_NONE;
1228 if (!(desc->flags & AV_PIX_FMT_FLAG_HWACCEL))
1230 if (avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU)
1233 if (!setup_hwaccel(avctx, ret, desc->name))
1236 /* Remove failed hwaccel from choices */
1237 for (n = 0; choices[n] != ret; n++)
1238 av_assert0(choices[n] != AV_PIX_FMT_NONE);
1241 choices[n] = choices[n + 1];
1242 while (choices[n++] != AV_PIX_FMT_NONE);
1249 #if FF_API_AVFRAME_LAVC
1250 void avcodec_get_frame_defaults(AVFrame *frame)
1252 #if LIBAVCODEC_VERSION_MAJOR >= 55
1253 // extended_data should explicitly be freed when needed, this code is unsafe currently
1254 // also this is not compatible to the <55 ABI/API
1255 if (frame->extended_data != frame->data && 0)
1256 av_freep(&frame->extended_data);
1259 memset(frame, 0, sizeof(AVFrame));
1260 av_frame_unref(frame);
1263 AVFrame *avcodec_alloc_frame(void)
1265 return av_frame_alloc();
1268 void avcodec_free_frame(AVFrame **frame)
1270 av_frame_free(frame);
1274 MAKE_ACCESSORS(AVCodecContext, codec, AVRational, pkt_timebase)
1275 MAKE_ACCESSORS(AVCodecContext, codec, const AVCodecDescriptor *, codec_descriptor)
1276 MAKE_ACCESSORS(AVCodecContext, codec, int, lowres)
1277 MAKE_ACCESSORS(AVCodecContext, codec, int, seek_preroll)
1278 MAKE_ACCESSORS(AVCodecContext, codec, uint16_t*, chroma_intra_matrix)
1280 int av_codec_get_max_lowres(const AVCodec *codec)
1282 return codec->max_lowres;
1285 static void get_subtitle_defaults(AVSubtitle *sub)
1287 memset(sub, 0, sizeof(*sub));
1288 sub->pts = AV_NOPTS_VALUE;
1291 static int get_bit_rate(AVCodecContext *ctx)
1294 int bits_per_sample;
1296 switch (ctx->codec_type) {
1297 case AVMEDIA_TYPE_VIDEO:
1298 case AVMEDIA_TYPE_DATA:
1299 case AVMEDIA_TYPE_SUBTITLE:
1300 case AVMEDIA_TYPE_ATTACHMENT:
1301 bit_rate = ctx->bit_rate;
1303 case AVMEDIA_TYPE_AUDIO:
1304 bits_per_sample = av_get_bits_per_sample(ctx->codec_id);
1305 bit_rate = bits_per_sample ? ctx->sample_rate * ctx->channels * bits_per_sample : ctx->bit_rate;
1314 int attribute_align_arg ff_codec_open2_recursive(AVCodecContext *avctx, const AVCodec *codec, AVDictionary **options)
1318 ff_unlock_avcodec();
1320 ret = avcodec_open2(avctx, codec, options);
1322 ff_lock_avcodec(avctx, codec);
1326 int attribute_align_arg avcodec_open2(AVCodecContext *avctx, const AVCodec *codec, AVDictionary **options)
1329 AVDictionary *tmp = NULL;
1331 if (avcodec_is_open(avctx))
1334 if ((!codec && !avctx->codec)) {
1335 av_log(avctx, AV_LOG_ERROR, "No codec provided to avcodec_open2()\n");
1336 return AVERROR(EINVAL);
1338 if ((codec && avctx->codec && codec != avctx->codec)) {
1339 av_log(avctx, AV_LOG_ERROR, "This AVCodecContext was allocated for %s, "
1340 "but %s passed to avcodec_open2()\n", avctx->codec->name, codec->name);
1341 return AVERROR(EINVAL);
1344 codec = avctx->codec;
1346 if (avctx->extradata_size < 0 || avctx->extradata_size >= FF_MAX_EXTRADATA_SIZE)
1347 return AVERROR(EINVAL);
1350 av_dict_copy(&tmp, *options, 0);
1352 ret = ff_lock_avcodec(avctx, codec);
1356 avctx->internal = av_mallocz(sizeof(AVCodecInternal));
1357 if (!avctx->internal) {
1358 ret = AVERROR(ENOMEM);
1362 avctx->internal->pool = av_mallocz(sizeof(*avctx->internal->pool));
1363 if (!avctx->internal->pool) {
1364 ret = AVERROR(ENOMEM);
1368 avctx->internal->to_free = av_frame_alloc();
1369 if (!avctx->internal->to_free) {
1370 ret = AVERROR(ENOMEM);
1374 if (codec->priv_data_size > 0) {
1375 if (!avctx->priv_data) {
1376 avctx->priv_data = av_mallocz(codec->priv_data_size);
1377 if (!avctx->priv_data) {
1378 ret = AVERROR(ENOMEM);
1381 if (codec->priv_class) {
1382 *(const AVClass **)avctx->priv_data = codec->priv_class;
1383 av_opt_set_defaults(avctx->priv_data);
1386 if (codec->priv_class && (ret = av_opt_set_dict(avctx->priv_data, &tmp)) < 0)
1389 avctx->priv_data = NULL;
1391 if ((ret = av_opt_set_dict(avctx, &tmp)) < 0)
1394 if (avctx->codec_whitelist && av_match_list(codec->name, avctx->codec_whitelist, ',') <= 0) {
1395 av_log(avctx, AV_LOG_ERROR, "Codec (%s) not on whitelist\n", codec->name);
1396 ret = AVERROR(EINVAL);
1400 // only call ff_set_dimensions() for non H.264/VP6F codecs so as not to overwrite previously setup dimensions
1401 if (!(avctx->coded_width && avctx->coded_height && avctx->width && avctx->height &&
1402 (avctx->codec_id == AV_CODEC_ID_H264 || avctx->codec_id == AV_CODEC_ID_VP6F))) {
1403 if (avctx->coded_width && avctx->coded_height)
1404 ret = ff_set_dimensions(avctx, avctx->coded_width, avctx->coded_height);
1405 else if (avctx->width && avctx->height)
1406 ret = ff_set_dimensions(avctx, avctx->width, avctx->height);
1411 if ((avctx->coded_width || avctx->coded_height || avctx->width || avctx->height)
1412 && ( av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx) < 0
1413 || av_image_check_size(avctx->width, avctx->height, 0, avctx) < 0)) {
1414 av_log(avctx, AV_LOG_WARNING, "Ignoring invalid width/height values\n");
1415 ff_set_dimensions(avctx, 0, 0);
1418 if (avctx->width > 0 && avctx->height > 0) {
1419 if (av_image_check_sar(avctx->width, avctx->height,
1420 avctx->sample_aspect_ratio) < 0) {
1421 av_log(avctx, AV_LOG_WARNING, "ignoring invalid SAR: %u/%u\n",
1422 avctx->sample_aspect_ratio.num,
1423 avctx->sample_aspect_ratio.den);
1424 avctx->sample_aspect_ratio = (AVRational){ 0, 1 };
1428 /* if the decoder init function was already called previously,
1429 * free the already allocated subtitle_header before overwriting it */
1430 if (av_codec_is_decoder(codec))
1431 av_freep(&avctx->subtitle_header);
1433 if (avctx->channels > FF_SANE_NB_CHANNELS) {
1434 ret = AVERROR(EINVAL);
1438 avctx->codec = codec;
1439 if ((avctx->codec_type == AVMEDIA_TYPE_UNKNOWN || avctx->codec_type == codec->type) &&
1440 avctx->codec_id == AV_CODEC_ID_NONE) {
1441 avctx->codec_type = codec->type;
1442 avctx->codec_id = codec->id;
1444 if (avctx->codec_id != codec->id || (avctx->codec_type != codec->type
1445 && avctx->codec_type != AVMEDIA_TYPE_ATTACHMENT)) {
1446 av_log(avctx, AV_LOG_ERROR, "Codec type or id mismatches\n");
1447 ret = AVERROR(EINVAL);
1450 avctx->frame_number = 0;
1451 avctx->codec_descriptor = avcodec_descriptor_get(avctx->codec_id);
1453 if (avctx->codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
1454 avctx->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
1455 const char *codec_string = av_codec_is_encoder(codec) ? "encoder" : "decoder";
1457 av_log(avctx, AV_LOG_ERROR,
1458 "The %s '%s' is experimental but experimental codecs are not enabled, "
1459 "add '-strict %d' if you want to use it.\n",
1460 codec_string, codec->name, FF_COMPLIANCE_EXPERIMENTAL);
1461 codec2 = av_codec_is_encoder(codec) ? avcodec_find_encoder(codec->id) : avcodec_find_decoder(codec->id);
1462 if (!(codec2->capabilities & CODEC_CAP_EXPERIMENTAL))
1463 av_log(avctx, AV_LOG_ERROR, "Alternatively use the non experimental %s '%s'.\n",
1464 codec_string, codec2->name);
1465 ret = AVERROR_EXPERIMENTAL;
1469 if (avctx->codec_type == AVMEDIA_TYPE_AUDIO &&
1470 (!avctx->time_base.num || !avctx->time_base.den)) {
1471 avctx->time_base.num = 1;
1472 avctx->time_base.den = avctx->sample_rate;
1476 av_log(avctx, AV_LOG_WARNING, "Warning: not compiled with thread support, using thread emulation\n");
1478 if (CONFIG_FRAME_THREAD_ENCODER) {
1479 ff_unlock_avcodec(); //we will instanciate a few encoders thus kick the counter to prevent false detection of a problem
1480 ret = ff_frame_thread_encoder_init(avctx, options ? *options : NULL);
1481 ff_lock_avcodec(avctx, codec);
1487 && !(avctx->internal->frame_thread_encoder && (avctx->active_thread_type&FF_THREAD_FRAME))) {
1488 ret = ff_thread_init(avctx);
1493 if (!HAVE_THREADS && !(codec->capabilities & CODEC_CAP_AUTO_THREADS))
1494 avctx->thread_count = 1;
1496 if (avctx->codec->max_lowres < avctx->lowres || avctx->lowres < 0) {
1497 av_log(avctx, AV_LOG_ERROR, "The maximum value for lowres supported by the decoder is %d\n",
1498 avctx->codec->max_lowres);
1499 ret = AVERROR(EINVAL);
1504 if (avctx->debug_mv)
1505 av_log(avctx, AV_LOG_WARNING, "The 'vismv' option is deprecated, "
1506 "see the codecview filter instead.\n");
1509 if (av_codec_is_encoder(avctx->codec)) {
1511 if (avctx->codec->sample_fmts) {
1512 for (i = 0; avctx->codec->sample_fmts[i] != AV_SAMPLE_FMT_NONE; i++) {
1513 if (avctx->sample_fmt == avctx->codec->sample_fmts[i])
1515 if (avctx->channels == 1 &&
1516 av_get_planar_sample_fmt(avctx->sample_fmt) ==
1517 av_get_planar_sample_fmt(avctx->codec->sample_fmts[i])) {
1518 avctx->sample_fmt = avctx->codec->sample_fmts[i];
1522 if (avctx->codec->sample_fmts[i] == AV_SAMPLE_FMT_NONE) {
1524 snprintf(buf, sizeof(buf), "%d", avctx->sample_fmt);
1525 av_log(avctx, AV_LOG_ERROR, "Specified sample format %s is invalid or not supported\n",
1526 (char *)av_x_if_null(av_get_sample_fmt_name(avctx->sample_fmt), buf));
1527 ret = AVERROR(EINVAL);
1531 if (avctx->codec->pix_fmts) {
1532 for (i = 0; avctx->codec->pix_fmts[i] != AV_PIX_FMT_NONE; i++)
1533 if (avctx->pix_fmt == avctx->codec->pix_fmts[i])
1535 if (avctx->codec->pix_fmts[i] == AV_PIX_FMT_NONE
1536 && !((avctx->codec_id == AV_CODEC_ID_MJPEG || avctx->codec_id == AV_CODEC_ID_LJPEG)
1537 && avctx->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL)) {
1539 snprintf(buf, sizeof(buf), "%d", avctx->pix_fmt);
1540 av_log(avctx, AV_LOG_ERROR, "Specified pixel format %s is invalid or not supported\n",
1541 (char *)av_x_if_null(av_get_pix_fmt_name(avctx->pix_fmt), buf));
1542 ret = AVERROR(EINVAL);
1545 if (avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ420P ||
1546 avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ411P ||
1547 avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ422P ||
1548 avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ440P ||
1549 avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ444P)
1550 avctx->color_range = AVCOL_RANGE_JPEG;
1552 if (avctx->codec->supported_samplerates) {
1553 for (i = 0; avctx->codec->supported_samplerates[i] != 0; i++)
1554 if (avctx->sample_rate == avctx->codec->supported_samplerates[i])
1556 if (avctx->codec->supported_samplerates[i] == 0) {
1557 av_log(avctx, AV_LOG_ERROR, "Specified sample rate %d is not supported\n",
1558 avctx->sample_rate);
1559 ret = AVERROR(EINVAL);
1563 if (avctx->codec->channel_layouts) {
1564 if (!avctx->channel_layout) {
1565 av_log(avctx, AV_LOG_WARNING, "Channel layout not specified\n");
1567 for (i = 0; avctx->codec->channel_layouts[i] != 0; i++)
1568 if (avctx->channel_layout == avctx->codec->channel_layouts[i])
1570 if (avctx->codec->channel_layouts[i] == 0) {
1572 av_get_channel_layout_string(buf, sizeof(buf), -1, avctx->channel_layout);
1573 av_log(avctx, AV_LOG_ERROR, "Specified channel layout '%s' is not supported\n", buf);
1574 ret = AVERROR(EINVAL);
1579 if (avctx->channel_layout && avctx->channels) {
1580 int channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
1581 if (channels != avctx->channels) {
1583 av_get_channel_layout_string(buf, sizeof(buf), -1, avctx->channel_layout);
1584 av_log(avctx, AV_LOG_ERROR,
1585 "Channel layout '%s' with %d channels does not match number of specified channels %d\n",
1586 buf, channels, avctx->channels);
1587 ret = AVERROR(EINVAL);
1590 } else if (avctx->channel_layout) {
1591 avctx->channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
1593 if(avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
1594 if (avctx->width <= 0 || avctx->height <= 0) {
1595 av_log(avctx, AV_LOG_ERROR, "dimensions not set\n");
1596 ret = AVERROR(EINVAL);
1600 if ( (avctx->codec_type == AVMEDIA_TYPE_VIDEO || avctx->codec_type == AVMEDIA_TYPE_AUDIO)
1601 && avctx->bit_rate>0 && avctx->bit_rate<1000) {
1602 av_log(avctx, AV_LOG_WARNING, "Bitrate %d is extremely low, maybe you mean %dk\n", avctx->bit_rate, avctx->bit_rate);
1605 if (!avctx->rc_initial_buffer_occupancy)
1606 avctx->rc_initial_buffer_occupancy = avctx->rc_buffer_size * 3 / 4;
1609 avctx->pts_correction_num_faulty_pts =
1610 avctx->pts_correction_num_faulty_dts = 0;
1611 avctx->pts_correction_last_pts =
1612 avctx->pts_correction_last_dts = INT64_MIN;
1614 if ( avctx->codec->init && (!(avctx->active_thread_type&FF_THREAD_FRAME)
1615 || avctx->internal->frame_thread_encoder)) {
1616 ret = avctx->codec->init(avctx);
1624 #if FF_API_AUDIOENC_DELAY
1625 if (av_codec_is_encoder(avctx->codec))
1626 avctx->delay = avctx->initial_padding;
1629 if (av_codec_is_decoder(avctx->codec)) {
1630 if (!avctx->bit_rate)
1631 avctx->bit_rate = get_bit_rate(avctx);
1632 /* validate channel layout from the decoder */
1633 if (avctx->channel_layout) {
1634 int channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
1635 if (!avctx->channels)
1636 avctx->channels = channels;
1637 else if (channels != avctx->channels) {
1639 av_get_channel_layout_string(buf, sizeof(buf), -1, avctx->channel_layout);
1640 av_log(avctx, AV_LOG_WARNING,
1641 "Channel layout '%s' with %d channels does not match specified number of channels %d: "
1642 "ignoring specified channel layout\n",
1643 buf, channels, avctx->channels);
1644 avctx->channel_layout = 0;
1647 if (avctx->channels && avctx->channels < 0 ||
1648 avctx->channels > FF_SANE_NB_CHANNELS) {
1649 ret = AVERROR(EINVAL);
1652 if (avctx->sub_charenc) {
1653 if (avctx->codec_type != AVMEDIA_TYPE_SUBTITLE) {
1654 av_log(avctx, AV_LOG_ERROR, "Character encoding is only "
1655 "supported with subtitles codecs\n");
1656 ret = AVERROR(EINVAL);
1658 } else if (avctx->codec_descriptor->props & AV_CODEC_PROP_BITMAP_SUB) {
1659 av_log(avctx, AV_LOG_WARNING, "Codec '%s' is bitmap-based, "
1660 "subtitles character encoding will be ignored\n",
1661 avctx->codec_descriptor->name);
1662 avctx->sub_charenc_mode = FF_SUB_CHARENC_MODE_DO_NOTHING;
1664 /* input character encoding is set for a text based subtitle
1665 * codec at this point */
1666 if (avctx->sub_charenc_mode == FF_SUB_CHARENC_MODE_AUTOMATIC)
1667 avctx->sub_charenc_mode = FF_SUB_CHARENC_MODE_PRE_DECODER;
1669 if (avctx->sub_charenc_mode == FF_SUB_CHARENC_MODE_PRE_DECODER) {
1671 iconv_t cd = iconv_open("UTF-8", avctx->sub_charenc);
1672 if (cd == (iconv_t)-1) {
1673 ret = AVERROR(errno);
1674 av_log(avctx, AV_LOG_ERROR, "Unable to open iconv context "
1675 "with input character encoding \"%s\"\n", avctx->sub_charenc);
1680 av_log(avctx, AV_LOG_ERROR, "Character encoding subtitles "
1681 "conversion needs a libavcodec built with iconv support "
1682 "for this codec\n");
1683 ret = AVERROR(ENOSYS);
1690 #if FF_API_AVCTX_TIMEBASE
1691 if (avctx->framerate.num > 0 && avctx->framerate.den > 0)
1692 avctx->time_base = av_inv_q(av_mul_q(avctx->framerate, (AVRational){avctx->ticks_per_frame, 1}));
1695 if (codec->priv_data_size > 0 && avctx->priv_data && codec->priv_class) {
1696 av_assert0(*(const AVClass **)avctx->priv_data == codec->priv_class);
1700 ff_unlock_avcodec();
1702 av_dict_free(options);
1709 (avctx->codec->caps_internal & FF_CODEC_CAP_INIT_CLEANUP))
1710 avctx->codec->close(avctx);
1712 if (codec->priv_class && codec->priv_data_size)
1713 av_opt_free(avctx->priv_data);
1717 av_freep(&avctx->priv_data);
1718 if (avctx->internal) {
1719 av_frame_free(&avctx->internal->to_free);
1720 av_freep(&avctx->internal->pool);
1722 av_freep(&avctx->internal);
1723 avctx->codec = NULL;
1727 int ff_alloc_packet2(AVCodecContext *avctx, AVPacket *avpkt, int64_t size)
1729 if (avpkt->size < 0) {
1730 av_log(avctx, AV_LOG_ERROR, "Invalid negative user packet size %d\n", avpkt->size);
1731 return AVERROR(EINVAL);
1733 if (size < 0 || size > INT_MAX - FF_INPUT_BUFFER_PADDING_SIZE) {
1734 av_log(avctx, AV_LOG_ERROR, "Invalid minimum required packet size %"PRId64" (max allowed is %d)\n",
1735 size, INT_MAX - FF_INPUT_BUFFER_PADDING_SIZE);
1736 return AVERROR(EINVAL);
1740 av_assert0(!avpkt->data || avpkt->data != avctx->internal->byte_buffer);
1741 if (!avpkt->data || avpkt->size < size) {
1742 av_fast_padded_malloc(&avctx->internal->byte_buffer, &avctx->internal->byte_buffer_size, size);
1743 avpkt->data = avctx->internal->byte_buffer;
1744 avpkt->size = avctx->internal->byte_buffer_size;
1745 #if FF_API_DESTRUCT_PACKET
1746 FF_DISABLE_DEPRECATION_WARNINGS
1747 avpkt->destruct = NULL;
1748 FF_ENABLE_DEPRECATION_WARNINGS
1754 AVBufferRef *buf = avpkt->buf;
1755 #if FF_API_DESTRUCT_PACKET
1756 FF_DISABLE_DEPRECATION_WARNINGS
1757 void *destruct = avpkt->destruct;
1758 FF_ENABLE_DEPRECATION_WARNINGS
1761 if (avpkt->size < size) {
1762 av_log(avctx, AV_LOG_ERROR, "User packet is too small (%d < %"PRId64")\n", avpkt->size, size);
1763 return AVERROR(EINVAL);
1766 av_init_packet(avpkt);
1767 #if FF_API_DESTRUCT_PACKET
1768 FF_DISABLE_DEPRECATION_WARNINGS
1769 avpkt->destruct = destruct;
1770 FF_ENABLE_DEPRECATION_WARNINGS
1776 int ret = av_new_packet(avpkt, size);
1778 av_log(avctx, AV_LOG_ERROR, "Failed to allocate packet of size %"PRId64"\n", size);
1783 int ff_alloc_packet(AVPacket *avpkt, int size)
1785 return ff_alloc_packet2(NULL, avpkt, size);
1789 * Pad last frame with silence.
1791 static int pad_last_frame(AVCodecContext *s, AVFrame **dst, const AVFrame *src)
1793 AVFrame *frame = NULL;
1796 if (!(frame = av_frame_alloc()))
1797 return AVERROR(ENOMEM);
1799 frame->format = src->format;
1800 frame->channel_layout = src->channel_layout;
1801 av_frame_set_channels(frame, av_frame_get_channels(src));
1802 frame->nb_samples = s->frame_size;
1803 ret = av_frame_get_buffer(frame, 32);
1807 ret = av_frame_copy_props(frame, src);
1811 if ((ret = av_samples_copy(frame->extended_data, src->extended_data, 0, 0,
1812 src->nb_samples, s->channels, s->sample_fmt)) < 0)
1814 if ((ret = av_samples_set_silence(frame->extended_data, src->nb_samples,
1815 frame->nb_samples - src->nb_samples,
1816 s->channels, s->sample_fmt)) < 0)
1824 av_frame_free(&frame);
1828 int attribute_align_arg avcodec_encode_audio2(AVCodecContext *avctx,
1830 const AVFrame *frame,
1831 int *got_packet_ptr)
1833 AVFrame *extended_frame = NULL;
1834 AVFrame *padded_frame = NULL;
1836 AVPacket user_pkt = *avpkt;
1837 int needs_realloc = !user_pkt.data;
1839 *got_packet_ptr = 0;
1841 if (!(avctx->codec->capabilities & CODEC_CAP_DELAY) && !frame) {
1842 av_free_packet(avpkt);
1843 av_init_packet(avpkt);
1847 /* ensure that extended_data is properly set */
1848 if (frame && !frame->extended_data) {
1849 if (av_sample_fmt_is_planar(avctx->sample_fmt) &&
1850 avctx->channels > AV_NUM_DATA_POINTERS) {
1851 av_log(avctx, AV_LOG_ERROR, "Encoding to a planar sample format, "
1852 "with more than %d channels, but extended_data is not set.\n",
1853 AV_NUM_DATA_POINTERS);
1854 return AVERROR(EINVAL);
1856 av_log(avctx, AV_LOG_WARNING, "extended_data is not set.\n");
1858 extended_frame = av_frame_alloc();
1859 if (!extended_frame)
1860 return AVERROR(ENOMEM);
1862 memcpy(extended_frame, frame, sizeof(AVFrame));
1863 extended_frame->extended_data = extended_frame->data;
1864 frame = extended_frame;
1867 /* extract audio service type metadata */
1869 AVFrameSideData *sd = av_frame_get_side_data(frame, AV_FRAME_DATA_AUDIO_SERVICE_TYPE);
1870 if (sd && sd->size >= sizeof(enum AVAudioServiceType))
1871 avctx->audio_service_type = *(enum AVAudioServiceType*)sd->data;
1874 /* check for valid frame size */
1876 if (avctx->codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME) {
1877 if (frame->nb_samples > avctx->frame_size) {
1878 av_log(avctx, AV_LOG_ERROR, "more samples than frame size (avcodec_encode_audio2)\n");
1879 ret = AVERROR(EINVAL);
1882 } else if (!(avctx->codec->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE)) {
1883 if (frame->nb_samples < avctx->frame_size &&
1884 !avctx->internal->last_audio_frame) {
1885 ret = pad_last_frame(avctx, &padded_frame, frame);
1889 frame = padded_frame;
1890 avctx->internal->last_audio_frame = 1;
1893 if (frame->nb_samples != avctx->frame_size) {
1894 av_log(avctx, AV_LOG_ERROR, "nb_samples (%d) != frame_size (%d) (avcodec_encode_audio2)\n", frame->nb_samples, avctx->frame_size);
1895 ret = AVERROR(EINVAL);
1901 ret = avctx->codec->encode2(avctx, avpkt, frame, got_packet_ptr);
1903 if (*got_packet_ptr) {
1904 if (!(avctx->codec->capabilities & CODEC_CAP_DELAY)) {
1905 if (avpkt->pts == AV_NOPTS_VALUE)
1906 avpkt->pts = frame->pts;
1907 if (!avpkt->duration)
1908 avpkt->duration = ff_samples_to_time_base(avctx,
1911 avpkt->dts = avpkt->pts;
1916 if (avpkt->data && avpkt->data == avctx->internal->byte_buffer) {
1918 if (user_pkt.data) {
1919 if (user_pkt.size >= avpkt->size) {
1920 memcpy(user_pkt.data, avpkt->data, avpkt->size);
1922 av_log(avctx, AV_LOG_ERROR, "Provided packet is too small, needs to be %d\n", avpkt->size);
1923 avpkt->size = user_pkt.size;
1926 avpkt->buf = user_pkt.buf;
1927 avpkt->data = user_pkt.data;
1928 #if FF_API_DESTRUCT_PACKET
1929 FF_DISABLE_DEPRECATION_WARNINGS
1930 avpkt->destruct = user_pkt.destruct;
1931 FF_ENABLE_DEPRECATION_WARNINGS
1934 if (av_dup_packet(avpkt) < 0) {
1935 ret = AVERROR(ENOMEM);
1941 if (needs_realloc && avpkt->data) {
1942 ret = av_buffer_realloc(&avpkt->buf, avpkt->size + FF_INPUT_BUFFER_PADDING_SIZE);
1944 avpkt->data = avpkt->buf->data;
1947 avctx->frame_number++;
1950 if (ret < 0 || !*got_packet_ptr) {
1951 av_free_packet(avpkt);
1952 av_init_packet(avpkt);
1956 /* NOTE: if we add any audio encoders which output non-keyframe packets,
1957 * this needs to be moved to the encoders, but for now we can do it
1958 * here to simplify things */
1959 avpkt->flags |= AV_PKT_FLAG_KEY;
1962 av_frame_free(&padded_frame);
1963 av_free(extended_frame);
1965 #if FF_API_AUDIOENC_DELAY
1966 avctx->delay = avctx->initial_padding;
1972 #if FF_API_OLD_ENCODE_AUDIO
1973 int attribute_align_arg avcodec_encode_audio(AVCodecContext *avctx,
1974 uint8_t *buf, int buf_size,
1975 const short *samples)
1979 int ret, samples_size, got_packet;
1981 av_init_packet(&pkt);
1983 pkt.size = buf_size;
1986 frame = av_frame_alloc();
1988 return AVERROR(ENOMEM);
1990 if (avctx->frame_size) {
1991 frame->nb_samples = avctx->frame_size;
1993 /* if frame_size is not set, the number of samples must be
1994 * calculated from the buffer size */
1996 if (!av_get_bits_per_sample(avctx->codec_id)) {
1997 av_log(avctx, AV_LOG_ERROR, "avcodec_encode_audio() does not "
1998 "support this codec\n");
1999 av_frame_free(&frame);
2000 return AVERROR(EINVAL);
2002 nb_samples = (int64_t)buf_size * 8 /
2003 (av_get_bits_per_sample(avctx->codec_id) *
2005 if (nb_samples >= INT_MAX) {
2006 av_frame_free(&frame);
2007 return AVERROR(EINVAL);
2009 frame->nb_samples = nb_samples;
2012 /* it is assumed that the samples buffer is large enough based on the
2013 * relevant parameters */
2014 samples_size = av_samples_get_buffer_size(NULL, avctx->channels,
2016 avctx->sample_fmt, 1);
2017 if ((ret = avcodec_fill_audio_frame(frame, avctx->channels,
2019 (const uint8_t *)samples,
2020 samples_size, 1)) < 0) {
2021 av_frame_free(&frame);
2025 /* fabricate frame pts from sample count.
2026 * this is needed because the avcodec_encode_audio() API does not have
2027 * a way for the user to provide pts */
2028 if (avctx->sample_rate && avctx->time_base.num)
2029 frame->pts = ff_samples_to_time_base(avctx,
2030 avctx->internal->sample_count);
2032 frame->pts = AV_NOPTS_VALUE;
2033 avctx->internal->sample_count += frame->nb_samples;
2039 ret = avcodec_encode_audio2(avctx, &pkt, frame, &got_packet);
2040 if (!ret && got_packet && avctx->coded_frame) {
2041 avctx->coded_frame->pts = pkt.pts;
2042 avctx->coded_frame->key_frame = !!(pkt.flags & AV_PKT_FLAG_KEY);
2044 /* free any side data since we cannot return it */
2045 av_packet_free_side_data(&pkt);
2047 if (frame && frame->extended_data != frame->data)
2048 av_freep(&frame->extended_data);
2050 av_frame_free(&frame);
2051 return ret ? ret : pkt.size;
2056 #if FF_API_OLD_ENCODE_VIDEO
2057 int attribute_align_arg avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
2058 const AVFrame *pict)
2061 int ret, got_packet = 0;
2063 if (buf_size < FF_MIN_BUFFER_SIZE) {
2064 av_log(avctx, AV_LOG_ERROR, "buffer smaller than minimum size\n");
2068 av_init_packet(&pkt);
2070 pkt.size = buf_size;
2072 ret = avcodec_encode_video2(avctx, &pkt, pict, &got_packet);
2073 if (!ret && got_packet && avctx->coded_frame) {
2074 avctx->coded_frame->pts = pkt.pts;
2075 avctx->coded_frame->key_frame = !!(pkt.flags & AV_PKT_FLAG_KEY);
2078 /* free any side data since we cannot return it */
2079 if (pkt.side_data_elems > 0) {
2081 for (i = 0; i < pkt.side_data_elems; i++)
2082 av_free(pkt.side_data[i].data);
2083 av_freep(&pkt.side_data);
2084 pkt.side_data_elems = 0;
2087 return ret ? ret : pkt.size;
2092 int attribute_align_arg avcodec_encode_video2(AVCodecContext *avctx,
2094 const AVFrame *frame,
2095 int *got_packet_ptr)
2098 AVPacket user_pkt = *avpkt;
2099 int needs_realloc = !user_pkt.data;
2101 *got_packet_ptr = 0;
2103 if(CONFIG_FRAME_THREAD_ENCODER &&
2104 avctx->internal->frame_thread_encoder && (avctx->active_thread_type&FF_THREAD_FRAME))
2105 return ff_thread_video_encode_frame(avctx, avpkt, frame, got_packet_ptr);
2107 if ((avctx->flags&CODEC_FLAG_PASS1) && avctx->stats_out)
2108 avctx->stats_out[0] = '\0';
2110 if (!(avctx->codec->capabilities & CODEC_CAP_DELAY) && !frame) {
2111 av_free_packet(avpkt);
2112 av_init_packet(avpkt);
2117 if (av_image_check_size(avctx->width, avctx->height, 0, avctx))
2118 return AVERROR(EINVAL);
2120 if (frame && frame->format == AV_PIX_FMT_NONE)
2121 av_log(avctx, AV_LOG_WARNING, "AVFrame.format is not set\n");
2122 if (frame && (frame->width == 0 || frame->height == 0))
2123 av_log(avctx, AV_LOG_WARNING, "AVFrame.width or height is not set\n");
2125 av_assert0(avctx->codec->encode2);
2127 ret = avctx->codec->encode2(avctx, avpkt, frame, got_packet_ptr);
2128 av_assert0(ret <= 0);
2130 if (avpkt->data && avpkt->data == avctx->internal->byte_buffer) {
2132 if (user_pkt.data) {
2133 if (user_pkt.size >= avpkt->size) {
2134 memcpy(user_pkt.data, avpkt->data, avpkt->size);
2136 av_log(avctx, AV_LOG_ERROR, "Provided packet is too small, needs to be %d\n", avpkt->size);
2137 avpkt->size = user_pkt.size;
2140 avpkt->buf = user_pkt.buf;
2141 avpkt->data = user_pkt.data;
2142 #if FF_API_DESTRUCT_PACKET
2143 FF_DISABLE_DEPRECATION_WARNINGS
2144 avpkt->destruct = user_pkt.destruct;
2145 FF_ENABLE_DEPRECATION_WARNINGS
2148 if (av_dup_packet(avpkt) < 0) {
2149 ret = AVERROR(ENOMEM);
2155 if (!*got_packet_ptr)
2157 else if (!(avctx->codec->capabilities & CODEC_CAP_DELAY))
2158 avpkt->pts = avpkt->dts = frame->pts;
2160 if (needs_realloc && avpkt->data) {
2161 ret = av_buffer_realloc(&avpkt->buf, avpkt->size + FF_INPUT_BUFFER_PADDING_SIZE);
2163 avpkt->data = avpkt->buf->data;
2166 avctx->frame_number++;
2169 if (ret < 0 || !*got_packet_ptr)
2170 av_free_packet(avpkt);
2172 av_packet_merge_side_data(avpkt);
2178 int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size,
2179 const AVSubtitle *sub)
2182 if (sub->start_display_time) {
2183 av_log(avctx, AV_LOG_ERROR, "start_display_time must be 0.\n");
2187 ret = avctx->codec->encode_sub(avctx, buf, buf_size, sub);
2188 avctx->frame_number++;
2193 * Attempt to guess proper monotonic timestamps for decoded video frames
2194 * which might have incorrect times. Input timestamps may wrap around, in
2195 * which case the output will as well.
2197 * @param pts the pts field of the decoded AVPacket, as passed through
2199 * @param dts the dts field of the decoded AVPacket
2200 * @return one of the input values, may be AV_NOPTS_VALUE
2202 static int64_t guess_correct_pts(AVCodecContext *ctx,
2203 int64_t reordered_pts, int64_t dts)
2205 int64_t pts = AV_NOPTS_VALUE;
2207 if (dts != AV_NOPTS_VALUE) {
2208 ctx->pts_correction_num_faulty_dts += dts <= ctx->pts_correction_last_dts;
2209 ctx->pts_correction_last_dts = dts;
2210 } else if (reordered_pts != AV_NOPTS_VALUE)
2211 ctx->pts_correction_last_dts = reordered_pts;
2213 if (reordered_pts != AV_NOPTS_VALUE) {
2214 ctx->pts_correction_num_faulty_pts += reordered_pts <= ctx->pts_correction_last_pts;
2215 ctx->pts_correction_last_pts = reordered_pts;
2216 } else if(dts != AV_NOPTS_VALUE)
2217 ctx->pts_correction_last_pts = dts;
2219 if ((ctx->pts_correction_num_faulty_pts<=ctx->pts_correction_num_faulty_dts || dts == AV_NOPTS_VALUE)
2220 && reordered_pts != AV_NOPTS_VALUE)
2221 pts = reordered_pts;
2228 static int apply_param_change(AVCodecContext *avctx, AVPacket *avpkt)
2231 const uint8_t *data;
2234 data = av_packet_get_side_data(avpkt, AV_PKT_DATA_PARAM_CHANGE, &size);
2238 if (!(avctx->codec->capabilities & CODEC_CAP_PARAM_CHANGE)) {
2239 av_log(avctx, AV_LOG_ERROR, "This decoder does not support parameter "
2240 "changes, but PARAM_CHANGE side data was sent to it.\n");
2241 return AVERROR(EINVAL);
2247 flags = bytestream_get_le32(&data);
2250 if (flags & AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_COUNT) {
2253 avctx->channels = bytestream_get_le32(&data);
2256 if (flags & AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_LAYOUT) {
2259 avctx->channel_layout = bytestream_get_le64(&data);
2262 if (flags & AV_SIDE_DATA_PARAM_CHANGE_SAMPLE_RATE) {
2265 avctx->sample_rate = bytestream_get_le32(&data);
2268 if (flags & AV_SIDE_DATA_PARAM_CHANGE_DIMENSIONS) {
2271 avctx->width = bytestream_get_le32(&data);
2272 avctx->height = bytestream_get_le32(&data);
2274 ret = ff_set_dimensions(avctx, avctx->width, avctx->height);
2281 av_log(avctx, AV_LOG_ERROR, "PARAM_CHANGE side data too small.\n");
2282 return AVERROR_INVALIDDATA;
2285 static int add_metadata_from_side_data(AVCodecContext *avctx, AVFrame *frame)
2288 const uint8_t *side_metadata;
2290 AVDictionary **frame_md = avpriv_frame_get_metadatap(frame);
2292 side_metadata = av_packet_get_side_data(avctx->internal->pkt,
2293 AV_PKT_DATA_STRINGS_METADATA, &size);
2294 return av_packet_unpack_dictionary(side_metadata, size, frame_md);
2297 static int unrefcount_frame(AVCodecInternal *avci, AVFrame *frame)
2301 /* move the original frame to our backup */
2302 av_frame_unref(avci->to_free);
2303 av_frame_move_ref(avci->to_free, frame);
2305 /* now copy everything except the AVBufferRefs back
2306 * note that we make a COPY of the side data, so calling av_frame_free() on
2307 * the caller's frame will work properly */
2308 ret = av_frame_copy_props(frame, avci->to_free);
2312 memcpy(frame->data, avci->to_free->data, sizeof(frame->data));
2313 memcpy(frame->linesize, avci->to_free->linesize, sizeof(frame->linesize));
2314 if (avci->to_free->extended_data != avci->to_free->data) {
2315 int planes = av_frame_get_channels(avci->to_free);
2316 int size = planes * sizeof(*frame->extended_data);
2319 av_frame_unref(frame);
2323 frame->extended_data = av_malloc(size);
2324 if (!frame->extended_data) {
2325 av_frame_unref(frame);
2326 return AVERROR(ENOMEM);
2328 memcpy(frame->extended_data, avci->to_free->extended_data,
2331 frame->extended_data = frame->data;
2333 frame->format = avci->to_free->format;
2334 frame->width = avci->to_free->width;
2335 frame->height = avci->to_free->height;
2336 frame->channel_layout = avci->to_free->channel_layout;
2337 frame->nb_samples = avci->to_free->nb_samples;
2338 av_frame_set_channels(frame, av_frame_get_channels(avci->to_free));
2343 int attribute_align_arg avcodec_decode_video2(AVCodecContext *avctx, AVFrame *picture,
2344 int *got_picture_ptr,
2345 const AVPacket *avpkt)
2347 AVCodecInternal *avci = avctx->internal;
2349 // copy to ensure we do not change avpkt
2350 AVPacket tmp = *avpkt;
2353 return AVERROR(EINVAL);
2354 if (avctx->codec->type != AVMEDIA_TYPE_VIDEO) {
2355 av_log(avctx, AV_LOG_ERROR, "Invalid media type for video\n");
2356 return AVERROR(EINVAL);
2359 *got_picture_ptr = 0;
2360 if ((avctx->coded_width || avctx->coded_height) && av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx))
2361 return AVERROR(EINVAL);
2363 av_frame_unref(picture);
2365 if ((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size || (avctx->active_thread_type & FF_THREAD_FRAME)) {
2366 int did_split = av_packet_split_side_data(&tmp);
2367 ret = apply_param_change(avctx, &tmp);
2369 av_log(avctx, AV_LOG_ERROR, "Error applying parameter changes.\n");
2370 if (avctx->err_recognition & AV_EF_EXPLODE)
2374 avctx->internal->pkt = &tmp;
2375 if (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME)
2376 ret = ff_thread_decode_frame(avctx, picture, got_picture_ptr,
2379 ret = avctx->codec->decode(avctx, picture, got_picture_ptr,
2381 picture->pkt_dts = avpkt->dts;
2383 if(!avctx->has_b_frames){
2384 av_frame_set_pkt_pos(picture, avpkt->pos);
2386 //FIXME these should be under if(!avctx->has_b_frames)
2387 /* get_buffer is supposed to set frame parameters */
2388 if (!(avctx->codec->capabilities & CODEC_CAP_DR1)) {
2389 if (!picture->sample_aspect_ratio.num) picture->sample_aspect_ratio = avctx->sample_aspect_ratio;
2390 if (!picture->width) picture->width = avctx->width;
2391 if (!picture->height) picture->height = avctx->height;
2392 if (picture->format == AV_PIX_FMT_NONE) picture->format = avctx->pix_fmt;
2395 add_metadata_from_side_data(avctx, picture);
2398 emms_c(); //needed to avoid an emms_c() call before every return;
2400 avctx->internal->pkt = NULL;
2402 av_packet_free_side_data(&tmp);
2407 if (*got_picture_ptr) {
2408 if (!avctx->refcounted_frames) {
2409 int err = unrefcount_frame(avci, picture);
2414 avctx->frame_number++;
2415 av_frame_set_best_effort_timestamp(picture,
2416 guess_correct_pts(avctx,
2420 av_frame_unref(picture);
2424 /* many decoders assign whole AVFrames, thus overwriting extended_data;
2425 * make sure it's set correctly */
2426 av_assert0(!picture->extended_data || picture->extended_data == picture->data);
2428 #if FF_API_AVCTX_TIMEBASE
2429 if (avctx->framerate.num > 0 && avctx->framerate.den > 0)
2430 avctx->time_base = av_inv_q(av_mul_q(avctx->framerate, (AVRational){avctx->ticks_per_frame, 1}));
2436 #if FF_API_OLD_DECODE_AUDIO
2437 int attribute_align_arg avcodec_decode_audio3(AVCodecContext *avctx, int16_t *samples,
2438 int *frame_size_ptr,
2441 AVFrame *frame = av_frame_alloc();
2442 int ret, got_frame = 0;
2445 return AVERROR(ENOMEM);
2446 if (avctx->get_buffer != avcodec_default_get_buffer) {
2447 av_log(avctx, AV_LOG_ERROR, "Custom get_buffer() for use with"
2448 "avcodec_decode_audio3() detected. Overriding with avcodec_default_get_buffer\n");
2449 av_log(avctx, AV_LOG_ERROR, "Please port your application to "
2450 "avcodec_decode_audio4()\n");
2451 avctx->get_buffer = avcodec_default_get_buffer;
2452 avctx->release_buffer = avcodec_default_release_buffer;
2455 ret = avcodec_decode_audio4(avctx, frame, &got_frame, avpkt);
2457 if (ret >= 0 && got_frame) {
2459 int planar = av_sample_fmt_is_planar(avctx->sample_fmt);
2460 int data_size = av_samples_get_buffer_size(&plane_size, avctx->channels,
2462 avctx->sample_fmt, 1);
2463 if (*frame_size_ptr < data_size) {
2464 av_log(avctx, AV_LOG_ERROR, "output buffer size is too small for "
2465 "the current frame (%d < %d)\n", *frame_size_ptr, data_size);
2466 av_frame_free(&frame);
2467 return AVERROR(EINVAL);
2470 memcpy(samples, frame->extended_data[0], plane_size);
2472 if (planar && avctx->channels > 1) {
2473 uint8_t *out = ((uint8_t *)samples) + plane_size;
2474 for (ch = 1; ch < avctx->channels; ch++) {
2475 memcpy(out, frame->extended_data[ch], plane_size);
2479 *frame_size_ptr = data_size;
2481 *frame_size_ptr = 0;
2483 av_frame_free(&frame);
2489 int attribute_align_arg avcodec_decode_audio4(AVCodecContext *avctx,
2492 const AVPacket *avpkt)
2494 AVCodecInternal *avci = avctx->internal;
2499 if (!avpkt->data && avpkt->size) {
2500 av_log(avctx, AV_LOG_ERROR, "invalid packet: NULL data, size != 0\n");
2501 return AVERROR(EINVAL);
2504 return AVERROR(EINVAL);
2505 if (avctx->codec->type != AVMEDIA_TYPE_AUDIO) {
2506 av_log(avctx, AV_LOG_ERROR, "Invalid media type for audio\n");
2507 return AVERROR(EINVAL);
2510 av_frame_unref(frame);
2512 if ((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size || (avctx->active_thread_type & FF_THREAD_FRAME)) {
2515 uint32_t discard_padding = 0;
2516 uint8_t skip_reason = 0;
2517 uint8_t discard_reason = 0;
2518 // copy to ensure we do not change avpkt
2519 AVPacket tmp = *avpkt;
2520 int did_split = av_packet_split_side_data(&tmp);
2521 ret = apply_param_change(avctx, &tmp);
2523 av_log(avctx, AV_LOG_ERROR, "Error applying parameter changes.\n");
2524 if (avctx->err_recognition & AV_EF_EXPLODE)
2528 avctx->internal->pkt = &tmp;
2529 if (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME)
2530 ret = ff_thread_decode_frame(avctx, frame, got_frame_ptr, &tmp);
2532 ret = avctx->codec->decode(avctx, frame, got_frame_ptr, &tmp);
2533 frame->pkt_dts = avpkt->dts;
2535 if (ret >= 0 && *got_frame_ptr) {
2536 add_metadata_from_side_data(avctx, frame);
2537 avctx->frame_number++;
2538 av_frame_set_best_effort_timestamp(frame,
2539 guess_correct_pts(avctx,
2542 if (frame->format == AV_SAMPLE_FMT_NONE)
2543 frame->format = avctx->sample_fmt;
2544 if (!frame->channel_layout)
2545 frame->channel_layout = avctx->channel_layout;
2546 if (!av_frame_get_channels(frame))
2547 av_frame_set_channels(frame, avctx->channels);
2548 if (!frame->sample_rate)
2549 frame->sample_rate = avctx->sample_rate;
2552 side= av_packet_get_side_data(avctx->internal->pkt, AV_PKT_DATA_SKIP_SAMPLES, &side_size);
2553 if(side && side_size>=10) {
2554 avctx->internal->skip_samples = AV_RL32(side);
2555 discard_padding = AV_RL32(side + 4);
2556 av_log(avctx, AV_LOG_DEBUG, "skip %d / discard %d samples due to side data\n",
2557 avctx->internal->skip_samples, (int)discard_padding);
2558 skip_reason = AV_RL8(side + 8);
2559 discard_reason = AV_RL8(side + 9);
2561 if (avctx->internal->skip_samples && *got_frame_ptr &&
2562 !(avctx->flags2 & CODEC_FLAG2_SKIP_MANUAL)) {
2563 if(frame->nb_samples <= avctx->internal->skip_samples){
2565 avctx->internal->skip_samples -= frame->nb_samples;
2566 av_log(avctx, AV_LOG_DEBUG, "skip whole frame, skip left: %d\n",
2567 avctx->internal->skip_samples);
2569 av_samples_copy(frame->extended_data, frame->extended_data, 0, avctx->internal->skip_samples,
2570 frame->nb_samples - avctx->internal->skip_samples, avctx->channels, frame->format);
2571 if(avctx->pkt_timebase.num && avctx->sample_rate) {
2572 int64_t diff_ts = av_rescale_q(avctx->internal->skip_samples,
2573 (AVRational){1, avctx->sample_rate},
2574 avctx->pkt_timebase);
2575 if(frame->pkt_pts!=AV_NOPTS_VALUE)
2576 frame->pkt_pts += diff_ts;
2577 if(frame->pkt_dts!=AV_NOPTS_VALUE)
2578 frame->pkt_dts += diff_ts;
2579 if (av_frame_get_pkt_duration(frame) >= diff_ts)
2580 av_frame_set_pkt_duration(frame, av_frame_get_pkt_duration(frame) - diff_ts);
2582 av_log(avctx, AV_LOG_WARNING, "Could not update timestamps for skipped samples.\n");
2584 av_log(avctx, AV_LOG_DEBUG, "skip %d/%d samples\n",
2585 avctx->internal->skip_samples, frame->nb_samples);
2586 frame->nb_samples -= avctx->internal->skip_samples;
2587 avctx->internal->skip_samples = 0;
2591 if (discard_padding > 0 && discard_padding <= frame->nb_samples && *got_frame_ptr &&
2592 !(avctx->flags2 & CODEC_FLAG2_SKIP_MANUAL)) {
2593 if (discard_padding == frame->nb_samples) {
2596 if(avctx->pkt_timebase.num && avctx->sample_rate) {
2597 int64_t diff_ts = av_rescale_q(frame->nb_samples - discard_padding,
2598 (AVRational){1, avctx->sample_rate},
2599 avctx->pkt_timebase);
2600 if (av_frame_get_pkt_duration(frame) >= diff_ts)
2601 av_frame_set_pkt_duration(frame, av_frame_get_pkt_duration(frame) - diff_ts);
2603 av_log(avctx, AV_LOG_WARNING, "Could not update timestamps for discarded samples.\n");
2605 av_log(avctx, AV_LOG_DEBUG, "discard %d/%d samples\n",
2606 (int)discard_padding, frame->nb_samples);
2607 frame->nb_samples -= discard_padding;
2611 if ((avctx->flags2 & CODEC_FLAG2_SKIP_MANUAL) && *got_frame_ptr) {
2612 AVFrameSideData *fside = av_frame_new_side_data(frame, AV_FRAME_DATA_SKIP_SAMPLES, 10);
2614 AV_WL32(fside->data, avctx->internal->skip_samples);
2615 AV_WL32(fside->data + 4, discard_padding);
2616 AV_WL8(fside->data + 8, skip_reason);
2617 AV_WL8(fside->data + 9, discard_reason);
2618 avctx->internal->skip_samples = 0;
2622 avctx->internal->pkt = NULL;
2624 av_packet_free_side_data(&tmp);
2629 if (ret >= 0 && *got_frame_ptr) {
2630 if (!avctx->refcounted_frames) {
2631 int err = unrefcount_frame(avci, frame);
2636 av_frame_unref(frame);
2642 #define UTF8_MAX_BYTES 4 /* 5 and 6 bytes sequences should not be used */
2643 static int recode_subtitle(AVCodecContext *avctx,
2644 AVPacket *outpkt, const AVPacket *inpkt)
2647 iconv_t cd = (iconv_t)-1;
2654 if (avctx->sub_charenc_mode != FF_SUB_CHARENC_MODE_PRE_DECODER || inpkt->size == 0)
2658 cd = iconv_open("UTF-8", avctx->sub_charenc);
2659 av_assert0(cd != (iconv_t)-1);
2664 if (inl >= INT_MAX / UTF8_MAX_BYTES - FF_INPUT_BUFFER_PADDING_SIZE) {
2665 av_log(avctx, AV_LOG_ERROR, "Subtitles packet is too big for recoding\n");
2666 ret = AVERROR(ENOMEM);
2670 ret = av_new_packet(&tmp, inl * UTF8_MAX_BYTES);
2673 outpkt->buf = tmp.buf;
2674 outpkt->data = tmp.data;
2675 outpkt->size = tmp.size;
2676 outb = outpkt->data;
2677 outl = outpkt->size;
2679 if (iconv(cd, &inb, &inl, &outb, &outl) == (size_t)-1 ||
2680 iconv(cd, NULL, NULL, &outb, &outl) == (size_t)-1 ||
2681 outl >= outpkt->size || inl != 0) {
2682 ret = FFMIN(AVERROR(errno), -1);
2683 av_log(avctx, AV_LOG_ERROR, "Unable to recode subtitle event \"%s\" "
2684 "from %s to UTF-8\n", inpkt->data, avctx->sub_charenc);
2685 av_free_packet(&tmp);
2688 outpkt->size -= outl;
2689 memset(outpkt->data + outpkt->size, 0, outl);
2692 if (cd != (iconv_t)-1)
2696 av_log(avctx, AV_LOG_ERROR, "requesting subtitles recoding without iconv");
2697 return AVERROR(EINVAL);
2701 static int utf8_check(const uint8_t *str)
2703 const uint8_t *byte;
2704 uint32_t codepoint, min;
2708 GET_UTF8(codepoint, *(byte++), return 0;);
2709 min = byte - str == 1 ? 0 : byte - str == 2 ? 0x80 :
2710 1 << (5 * (byte - str) - 4);
2711 if (codepoint < min || codepoint >= 0x110000 ||
2712 codepoint == 0xFFFE /* BOM */ ||
2713 codepoint >= 0xD800 && codepoint <= 0xDFFF /* surrogates */)
2720 int avcodec_decode_subtitle2(AVCodecContext *avctx, AVSubtitle *sub,
2726 if (!avpkt->data && avpkt->size) {
2727 av_log(avctx, AV_LOG_ERROR, "invalid packet: NULL data, size != 0\n");
2728 return AVERROR(EINVAL);
2731 return AVERROR(EINVAL);
2732 if (avctx->codec->type != AVMEDIA_TYPE_SUBTITLE) {
2733 av_log(avctx, AV_LOG_ERROR, "Invalid media type for subtitles\n");
2734 return AVERROR(EINVAL);
2738 get_subtitle_defaults(sub);
2740 if ((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size) {
2741 AVPacket pkt_recoded;
2742 AVPacket tmp = *avpkt;
2743 int did_split = av_packet_split_side_data(&tmp);
2744 //apply_param_change(avctx, &tmp);
2747 /* FFMIN() prevents overflow in case the packet wasn't allocated with
2749 * If the side data is smaller than the buffer padding size, the
2750 * remaining bytes should have already been filled with zeros by the
2751 * original packet allocation anyway. */
2752 memset(tmp.data + tmp.size, 0,
2753 FFMIN(avpkt->size - tmp.size, FF_INPUT_BUFFER_PADDING_SIZE));
2757 ret = recode_subtitle(avctx, &pkt_recoded, &tmp);
2761 avctx->internal->pkt = &pkt_recoded;
2763 if (avctx->pkt_timebase.den && avpkt->pts != AV_NOPTS_VALUE)
2764 sub->pts = av_rescale_q(avpkt->pts,
2765 avctx->pkt_timebase, AV_TIME_BASE_Q);
2766 ret = avctx->codec->decode(avctx, sub, got_sub_ptr, &pkt_recoded);
2767 av_assert1((ret >= 0) >= !!*got_sub_ptr &&
2768 !!*got_sub_ptr >= !!sub->num_rects);
2770 if (sub->num_rects && !sub->end_display_time && avpkt->duration &&
2771 avctx->pkt_timebase.num) {
2772 AVRational ms = { 1, 1000 };
2773 sub->end_display_time = av_rescale_q(avpkt->duration,
2774 avctx->pkt_timebase, ms);
2777 for (i = 0; i < sub->num_rects; i++) {
2778 if (sub->rects[i]->ass && !utf8_check(sub->rects[i]->ass)) {
2779 av_log(avctx, AV_LOG_ERROR,
2780 "Invalid UTF-8 in decoded subtitles text; "
2781 "maybe missing -sub_charenc option\n");
2782 avsubtitle_free(sub);
2783 return AVERROR_INVALIDDATA;
2787 if (tmp.data != pkt_recoded.data) { // did we recode?
2788 /* prevent from destroying side data from original packet */
2789 pkt_recoded.side_data = NULL;
2790 pkt_recoded.side_data_elems = 0;
2792 av_free_packet(&pkt_recoded);
2794 if (avctx->codec_descriptor->props & AV_CODEC_PROP_BITMAP_SUB)
2796 else if (avctx->codec_descriptor->props & AV_CODEC_PROP_TEXT_SUB)
2798 avctx->internal->pkt = NULL;
2802 av_packet_free_side_data(&tmp);
2808 avctx->frame_number++;
2814 void avsubtitle_free(AVSubtitle *sub)
2818 for (i = 0; i < sub->num_rects; i++) {
2819 av_freep(&sub->rects[i]->pict.data[0]);
2820 av_freep(&sub->rects[i]->pict.data[1]);
2821 av_freep(&sub->rects[i]->pict.data[2]);
2822 av_freep(&sub->rects[i]->pict.data[3]);
2823 av_freep(&sub->rects[i]->text);
2824 av_freep(&sub->rects[i]->ass);
2825 av_freep(&sub->rects[i]);
2828 av_freep(&sub->rects);
2830 memset(sub, 0, sizeof(AVSubtitle));
2833 av_cold int avcodec_close(AVCodecContext *avctx)
2838 if (avcodec_is_open(avctx)) {
2839 FramePool *pool = avctx->internal->pool;
2841 if (CONFIG_FRAME_THREAD_ENCODER &&
2842 avctx->internal->frame_thread_encoder && avctx->thread_count > 1) {
2843 ff_frame_thread_encoder_free(avctx);
2845 if (HAVE_THREADS && avctx->internal->thread_ctx)
2846 ff_thread_free(avctx);
2847 if (avctx->codec && avctx->codec->close)
2848 avctx->codec->close(avctx);
2849 avctx->coded_frame = NULL;
2850 avctx->internal->byte_buffer_size = 0;
2851 av_freep(&avctx->internal->byte_buffer);
2852 av_frame_free(&avctx->internal->to_free);
2853 for (i = 0; i < FF_ARRAY_ELEMS(pool->pools); i++)
2854 av_buffer_pool_uninit(&pool->pools[i]);
2855 av_freep(&avctx->internal->pool);
2857 if (avctx->hwaccel && avctx->hwaccel->uninit)
2858 avctx->hwaccel->uninit(avctx);
2859 av_freep(&avctx->internal->hwaccel_priv_data);
2861 av_freep(&avctx->internal);
2864 if (avctx->priv_data && avctx->codec && avctx->codec->priv_class)
2865 av_opt_free(avctx->priv_data);
2867 av_freep(&avctx->priv_data);
2868 if (av_codec_is_encoder(avctx->codec))
2869 av_freep(&avctx->extradata);
2870 avctx->codec = NULL;
2871 avctx->active_thread_type = 0;
2876 static enum AVCodecID remap_deprecated_codec_id(enum AVCodecID id)
2879 //This is for future deprecatec codec ids, its empty since
2880 //last major bump but will fill up again over time, please don't remove it
2881 // case AV_CODEC_ID_UTVIDEO_DEPRECATED: return AV_CODEC_ID_UTVIDEO;
2882 case AV_CODEC_ID_BRENDER_PIX_DEPRECATED : return AV_CODEC_ID_BRENDER_PIX;
2883 case AV_CODEC_ID_OPUS_DEPRECATED : return AV_CODEC_ID_OPUS;
2884 case AV_CODEC_ID_TAK_DEPRECATED : return AV_CODEC_ID_TAK;
2885 case AV_CODEC_ID_PAF_AUDIO_DEPRECATED : return AV_CODEC_ID_PAF_AUDIO;
2886 case AV_CODEC_ID_PCM_S24LE_PLANAR_DEPRECATED : return AV_CODEC_ID_PCM_S24LE_PLANAR;
2887 case AV_CODEC_ID_PCM_S32LE_PLANAR_DEPRECATED : return AV_CODEC_ID_PCM_S32LE_PLANAR;
2888 case AV_CODEC_ID_ADPCM_VIMA_DEPRECATED : return AV_CODEC_ID_ADPCM_VIMA;
2889 case AV_CODEC_ID_ESCAPE130_DEPRECATED : return AV_CODEC_ID_ESCAPE130;
2890 case AV_CODEC_ID_EXR_DEPRECATED : return AV_CODEC_ID_EXR;
2891 case AV_CODEC_ID_G2M_DEPRECATED : return AV_CODEC_ID_G2M;
2892 case AV_CODEC_ID_PAF_VIDEO_DEPRECATED : return AV_CODEC_ID_PAF_VIDEO;
2893 case AV_CODEC_ID_WEBP_DEPRECATED : return AV_CODEC_ID_WEBP;
2894 case AV_CODEC_ID_HEVC_DEPRECATED : return AV_CODEC_ID_HEVC;
2895 case AV_CODEC_ID_MVC1_DEPRECATED : return AV_CODEC_ID_MVC1;
2896 case AV_CODEC_ID_MVC2_DEPRECATED : return AV_CODEC_ID_MVC2;
2897 case AV_CODEC_ID_SANM_DEPRECATED : return AV_CODEC_ID_SANM;
2898 case AV_CODEC_ID_SGIRLE_DEPRECATED : return AV_CODEC_ID_SGIRLE;
2899 case AV_CODEC_ID_VP7_DEPRECATED : return AV_CODEC_ID_VP7;
2900 default : return id;
2904 static AVCodec *find_encdec(enum AVCodecID id, int encoder)
2906 AVCodec *p, *experimental = NULL;
2908 id= remap_deprecated_codec_id(id);
2910 if ((encoder ? av_codec_is_encoder(p) : av_codec_is_decoder(p)) &&
2912 if (p->capabilities & CODEC_CAP_EXPERIMENTAL && !experimental) {
2919 return experimental;
2922 AVCodec *avcodec_find_encoder(enum AVCodecID id)
2924 return find_encdec(id, 1);
2927 AVCodec *avcodec_find_encoder_by_name(const char *name)
2934 if (av_codec_is_encoder(p) && strcmp(name, p->name) == 0)
2941 AVCodec *avcodec_find_decoder(enum AVCodecID id)
2943 return find_encdec(id, 0);
2946 AVCodec *avcodec_find_decoder_by_name(const char *name)
2953 if (av_codec_is_decoder(p) && strcmp(name, p->name) == 0)
2960 const char *avcodec_get_name(enum AVCodecID id)
2962 const AVCodecDescriptor *cd;
2965 if (id == AV_CODEC_ID_NONE)
2967 cd = avcodec_descriptor_get(id);
2970 av_log(NULL, AV_LOG_WARNING, "Codec 0x%x is not in the full list.\n", id);
2971 codec = avcodec_find_decoder(id);
2974 codec = avcodec_find_encoder(id);
2977 return "unknown_codec";
2980 size_t av_get_codec_tag_string(char *buf, size_t buf_size, unsigned int codec_tag)
2982 int i, len, ret = 0;
2984 #define TAG_PRINT(x) \
2985 (((x) >= '0' && (x) <= '9') || \
2986 ((x) >= 'a' && (x) <= 'z') || ((x) >= 'A' && (x) <= 'Z') || \
2987 ((x) == '.' || (x) == ' ' || (x) == '-' || (x) == '_'))
2989 for (i = 0; i < 4; i++) {
2990 len = snprintf(buf, buf_size,
2991 TAG_PRINT(codec_tag & 0xFF) ? "%c" : "[%d]", codec_tag & 0xFF);
2993 buf_size = buf_size > len ? buf_size - len : 0;
3000 void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)
3002 const char *codec_type;
3003 const char *codec_name;
3004 const char *profile = NULL;
3008 AVRational display_aspect_ratio;
3009 const char *separator = enc->dump_separator ? (const char *)enc->dump_separator : ", ";
3011 if (!buf || buf_size <= 0)
3013 codec_type = av_get_media_type_string(enc->codec_type);
3014 codec_name = avcodec_get_name(enc->codec_id);
3015 if (enc->profile != FF_PROFILE_UNKNOWN) {
3019 p = encode ? avcodec_find_encoder(enc->codec_id) :
3020 avcodec_find_decoder(enc->codec_id);
3022 profile = av_get_profile_name(p, enc->profile);
3025 snprintf(buf, buf_size, "%s: %s", codec_type ? codec_type : "unknown",
3027 buf[0] ^= 'a' ^ 'A'; /* first letter in uppercase */
3029 if (enc->codec && strcmp(enc->codec->name, codec_name))
3030 snprintf(buf + strlen(buf), buf_size - strlen(buf), " (%s)", enc->codec->name);
3033 snprintf(buf + strlen(buf), buf_size - strlen(buf), " (%s)", profile);
3034 if ( enc->codec_type == AVMEDIA_TYPE_VIDEO
3035 && av_log_get_level() >= AV_LOG_VERBOSE
3037 snprintf(buf + strlen(buf), buf_size - strlen(buf),
3038 ", %d reference frame%s",
3039 enc->refs, enc->refs > 1 ? "s" : "");
3041 if (enc->codec_tag) {
3043 av_get_codec_tag_string(tag_buf, sizeof(tag_buf), enc->codec_tag);
3044 snprintf(buf + strlen(buf), buf_size - strlen(buf),
3045 " (%s / 0x%04X)", tag_buf, enc->codec_tag);
3048 switch (enc->codec_type) {
3049 case AVMEDIA_TYPE_VIDEO:
3051 char detail[256] = "(";
3053 av_strlcat(buf, separator, buf_size);
3055 snprintf(buf + strlen(buf), buf_size - strlen(buf),
3056 "%s", enc->pix_fmt == AV_PIX_FMT_NONE ? "none" :
3057 av_get_pix_fmt_name(enc->pix_fmt));
3058 if (enc->bits_per_raw_sample && enc->pix_fmt != AV_PIX_FMT_NONE &&
3059 enc->bits_per_raw_sample <= av_pix_fmt_desc_get(enc->pix_fmt)->comp[0].depth_minus1)
3060 av_strlcatf(detail, sizeof(detail), "%d bpc, ", enc->bits_per_raw_sample);
3061 if (enc->color_range != AVCOL_RANGE_UNSPECIFIED)
3062 av_strlcatf(detail, sizeof(detail), "%s, ",
3063 av_color_range_name(enc->color_range));
3065 if (enc->colorspace != AVCOL_SPC_UNSPECIFIED ||
3066 enc->color_primaries != AVCOL_PRI_UNSPECIFIED ||
3067 enc->color_trc != AVCOL_TRC_UNSPECIFIED) {
3068 if (enc->colorspace != (int)enc->color_primaries ||
3069 enc->colorspace != (int)enc->color_trc) {
3071 av_strlcatf(detail, sizeof(detail), "%s/%s/%s, ",
3072 av_color_space_name(enc->colorspace),
3073 av_color_primaries_name(enc->color_primaries),
3074 av_color_transfer_name(enc->color_trc));
3076 av_strlcatf(detail, sizeof(detail), "%s, ",
3077 av_get_colorspace_name(enc->colorspace));
3080 if (av_log_get_level() >= AV_LOG_DEBUG &&
3081 enc->chroma_sample_location != AVCHROMA_LOC_UNSPECIFIED)
3082 av_strlcatf(detail, sizeof(detail), "%s, ",
3083 av_chroma_location_name(enc->chroma_sample_location));
3085 if (strlen(detail) > 1) {
3086 detail[strlen(detail) - 2] = 0;
3087 av_strlcatf(buf, buf_size, "%s)", detail);
3092 av_strlcat(buf, new_line ? separator : ", ", buf_size);
3094 snprintf(buf + strlen(buf), buf_size - strlen(buf),
3096 enc->width, enc->height);
3098 if (av_log_get_level() >= AV_LOG_VERBOSE &&
3099 (enc->width != enc->coded_width ||
3100 enc->height != enc->coded_height))
3101 snprintf(buf + strlen(buf), buf_size - strlen(buf),
3102 " (%dx%d)", enc->coded_width, enc->coded_height);
3104 if (enc->sample_aspect_ratio.num) {
3105 av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
3106 enc->width * enc->sample_aspect_ratio.num,
3107 enc->height * enc->sample_aspect_ratio.den,
3109 snprintf(buf + strlen(buf), buf_size - strlen(buf),
3110 " [SAR %d:%d DAR %d:%d]",
3111 enc->sample_aspect_ratio.num, enc->sample_aspect_ratio.den,
3112 display_aspect_ratio.num, display_aspect_ratio.den);
3114 if (av_log_get_level() >= AV_LOG_DEBUG) {
3115 int g = av_gcd(enc->time_base.num, enc->time_base.den);
3116 snprintf(buf + strlen(buf), buf_size - strlen(buf),
3118 enc->time_base.num / g, enc->time_base.den / g);
3122 snprintf(buf + strlen(buf), buf_size - strlen(buf),
3123 ", q=%d-%d", enc->qmin, enc->qmax);
3126 case AVMEDIA_TYPE_AUDIO:
3127 av_strlcat(buf, separator, buf_size);
3129 if (enc->sample_rate) {
3130 snprintf(buf + strlen(buf), buf_size - strlen(buf),
3131 "%d Hz, ", enc->sample_rate);
3133 av_get_channel_layout_string(buf + strlen(buf), buf_size - strlen(buf), enc->channels, enc->channel_layout);
3134 if (enc->sample_fmt != AV_SAMPLE_FMT_NONE) {
3135 snprintf(buf + strlen(buf), buf_size - strlen(buf),
3136 ", %s", av_get_sample_fmt_name(enc->sample_fmt));
3138 if ( enc->bits_per_raw_sample > 0
3139 && enc->bits_per_raw_sample != av_get_bytes_per_sample(enc->sample_fmt) * 8)
3140 snprintf(buf + strlen(buf), buf_size - strlen(buf),
3141 " (%d bit)", enc->bits_per_raw_sample);
3143 case AVMEDIA_TYPE_DATA:
3144 if (av_log_get_level() >= AV_LOG_DEBUG) {
3145 int g = av_gcd(enc->time_base.num, enc->time_base.den);
3147 snprintf(buf + strlen(buf), buf_size - strlen(buf),
3149 enc->time_base.num / g, enc->time_base.den / g);
3152 case AVMEDIA_TYPE_SUBTITLE:
3154 snprintf(buf + strlen(buf), buf_size - strlen(buf),
3155 ", %dx%d", enc->width, enc->height);
3161 if (enc->flags & CODEC_FLAG_PASS1)
3162 snprintf(buf + strlen(buf), buf_size - strlen(buf),
3164 if (enc->flags & CODEC_FLAG_PASS2)
3165 snprintf(buf + strlen(buf), buf_size - strlen(buf),
3168 bitrate = get_bit_rate(enc);
3170 snprintf(buf + strlen(buf), buf_size - strlen(buf),
3171 ", %d kb/s", bitrate / 1000);
3172 } else if (enc->rc_max_rate > 0) {
3173 snprintf(buf + strlen(buf), buf_size - strlen(buf),
3174 ", max. %d kb/s", enc->rc_max_rate / 1000);
3178 const char *av_get_profile_name(const AVCodec *codec, int profile)
3181 if (profile == FF_PROFILE_UNKNOWN || !codec->profiles)
3184 for (p = codec->profiles; p->profile != FF_PROFILE_UNKNOWN; p++)
3185 if (p->profile == profile)
3191 unsigned avcodec_version(void)
3193 // av_assert0(AV_CODEC_ID_V410==164);
3194 av_assert0(AV_CODEC_ID_PCM_S8_PLANAR==65563);
3195 av_assert0(AV_CODEC_ID_ADPCM_G722==69660);
3196 // av_assert0(AV_CODEC_ID_BMV_AUDIO==86071);
3197 av_assert0(AV_CODEC_ID_SRT==94216);
3198 av_assert0(LIBAVCODEC_VERSION_MICRO >= 100);
3200 av_assert0(CODEC_ID_CLLC == AV_CODEC_ID_CLLC);
3201 av_assert0(CODEC_ID_PCM_S8_PLANAR == AV_CODEC_ID_PCM_S8_PLANAR);
3202 av_assert0(CODEC_ID_ADPCM_IMA_APC == AV_CODEC_ID_ADPCM_IMA_APC);
3203 av_assert0(CODEC_ID_ILBC == AV_CODEC_ID_ILBC);
3204 av_assert0(CODEC_ID_SRT == AV_CODEC_ID_SRT);
3205 return LIBAVCODEC_VERSION_INT;
3208 const char *avcodec_configuration(void)
3210 return FFMPEG_CONFIGURATION;
3213 const char *avcodec_license(void)
3215 #define LICENSE_PREFIX "libavcodec license: "
3216 return LICENSE_PREFIX FFMPEG_LICENSE + sizeof(LICENSE_PREFIX) - 1;
3219 void avcodec_flush_buffers(AVCodecContext *avctx)
3221 if (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME)
3222 ff_thread_flush(avctx);
3223 else if (avctx->codec->flush)
3224 avctx->codec->flush(avctx);
3226 avctx->pts_correction_last_pts =
3227 avctx->pts_correction_last_dts = INT64_MIN;
3229 if (!avctx->refcounted_frames)
3230 av_frame_unref(avctx->internal->to_free);
3233 int av_get_exact_bits_per_sample(enum AVCodecID codec_id)
3236 case AV_CODEC_ID_8SVX_EXP:
3237 case AV_CODEC_ID_8SVX_FIB:
3238 case AV_CODEC_ID_ADPCM_CT:
3239 case AV_CODEC_ID_ADPCM_IMA_APC:
3240 case AV_CODEC_ID_ADPCM_IMA_EA_SEAD:
3241 case AV_CODEC_ID_ADPCM_IMA_OKI:
3242 case AV_CODEC_ID_ADPCM_IMA_WS:
3243 case AV_CODEC_ID_ADPCM_G722:
3244 case AV_CODEC_ID_ADPCM_YAMAHA:
3246 case AV_CODEC_ID_DSD_LSBF:
3247 case AV_CODEC_ID_DSD_MSBF:
3248 case AV_CODEC_ID_DSD_LSBF_PLANAR:
3249 case AV_CODEC_ID_DSD_MSBF_PLANAR:
3250 case AV_CODEC_ID_PCM_ALAW:
3251 case AV_CODEC_ID_PCM_MULAW:
3252 case AV_CODEC_ID_PCM_S8:
3253 case AV_CODEC_ID_PCM_S8_PLANAR:
3254 case AV_CODEC_ID_PCM_U8:
3255 case AV_CODEC_ID_PCM_ZORK:
3257 case AV_CODEC_ID_PCM_S16BE:
3258 case AV_CODEC_ID_PCM_S16BE_PLANAR:
3259 case AV_CODEC_ID_PCM_S16LE:
3260 case AV_CODEC_ID_PCM_S16LE_PLANAR:
3261 case AV_CODEC_ID_PCM_U16BE:
3262 case AV_CODEC_ID_PCM_U16LE:
3264 case AV_CODEC_ID_PCM_S24DAUD:
3265 case AV_CODEC_ID_PCM_S24BE:
3266 case AV_CODEC_ID_PCM_S24LE:
3267 case AV_CODEC_ID_PCM_S24LE_PLANAR:
3268 case AV_CODEC_ID_PCM_U24BE:
3269 case AV_CODEC_ID_PCM_U24LE:
3271 case AV_CODEC_ID_PCM_S32BE:
3272 case AV_CODEC_ID_PCM_S32LE:
3273 case AV_CODEC_ID_PCM_S32LE_PLANAR:
3274 case AV_CODEC_ID_PCM_U32BE:
3275 case AV_CODEC_ID_PCM_U32LE:
3276 case AV_CODEC_ID_PCM_F32BE:
3277 case AV_CODEC_ID_PCM_F32LE:
3279 case AV_CODEC_ID_PCM_F64BE:
3280 case AV_CODEC_ID_PCM_F64LE:
3287 enum AVCodecID av_get_pcm_codec(enum AVSampleFormat fmt, int be)
3289 static const enum AVCodecID map[AV_SAMPLE_FMT_NB][2] = {
3290 [AV_SAMPLE_FMT_U8 ] = { AV_CODEC_ID_PCM_U8, AV_CODEC_ID_PCM_U8 },
3291 [AV_SAMPLE_FMT_S16 ] = { AV_CODEC_ID_PCM_S16LE, AV_CODEC_ID_PCM_S16BE },
3292 [AV_SAMPLE_FMT_S32 ] = { AV_CODEC_ID_PCM_S32LE, AV_CODEC_ID_PCM_S32BE },
3293 [AV_SAMPLE_FMT_FLT ] = { AV_CODEC_ID_PCM_F32LE, AV_CODEC_ID_PCM_F32BE },
3294 [AV_SAMPLE_FMT_DBL ] = { AV_CODEC_ID_PCM_F64LE, AV_CODEC_ID_PCM_F64BE },
3295 [AV_SAMPLE_FMT_U8P ] = { AV_CODEC_ID_PCM_U8, AV_CODEC_ID_PCM_U8 },
3296 [AV_SAMPLE_FMT_S16P] = { AV_CODEC_ID_PCM_S16LE, AV_CODEC_ID_PCM_S16BE },
3297 [AV_SAMPLE_FMT_S32P] = { AV_CODEC_ID_PCM_S32LE, AV_CODEC_ID_PCM_S32BE },
3298 [AV_SAMPLE_FMT_FLTP] = { AV_CODEC_ID_PCM_F32LE, AV_CODEC_ID_PCM_F32BE },
3299 [AV_SAMPLE_FMT_DBLP] = { AV_CODEC_ID_PCM_F64LE, AV_CODEC_ID_PCM_F64BE },
3301 if (fmt < 0 || fmt >= AV_SAMPLE_FMT_NB)
3302 return AV_CODEC_ID_NONE;
3303 if (be < 0 || be > 1)
3305 return map[fmt][be];
3308 int av_get_bits_per_sample(enum AVCodecID codec_id)
3311 case AV_CODEC_ID_ADPCM_SBPRO_2:
3313 case AV_CODEC_ID_ADPCM_SBPRO_3:
3315 case AV_CODEC_ID_ADPCM_SBPRO_4:
3316 case AV_CODEC_ID_ADPCM_IMA_WAV:
3317 case AV_CODEC_ID_ADPCM_IMA_QT:
3318 case AV_CODEC_ID_ADPCM_SWF:
3319 case AV_CODEC_ID_ADPCM_MS:
3322 return av_get_exact_bits_per_sample(codec_id);
3326 int av_get_audio_frame_duration(AVCodecContext *avctx, int frame_bytes)
3328 int id, sr, ch, ba, tag, bps;
3330 id = avctx->codec_id;
3331 sr = avctx->sample_rate;
3332 ch = avctx->channels;
3333 ba = avctx->block_align;
3334 tag = avctx->codec_tag;
3335 bps = av_get_exact_bits_per_sample(avctx->codec_id);
3337 /* codecs with an exact constant bits per sample */
3338 if (bps > 0 && ch > 0 && frame_bytes > 0 && ch < 32768 && bps < 32768)
3339 return (frame_bytes * 8LL) / (bps * ch);
3340 bps = avctx->bits_per_coded_sample;
3342 /* codecs with a fixed packet duration */
3344 case AV_CODEC_ID_ADPCM_ADX: return 32;
3345 case AV_CODEC_ID_ADPCM_IMA_QT: return 64;
3346 case AV_CODEC_ID_ADPCM_EA_XAS: return 128;
3347 case AV_CODEC_ID_AMR_NB:
3348 case AV_CODEC_ID_EVRC:
3349 case AV_CODEC_ID_GSM:
3350 case AV_CODEC_ID_QCELP:
3351 case AV_CODEC_ID_RA_288: return 160;
3352 case AV_CODEC_ID_AMR_WB:
3353 case AV_CODEC_ID_GSM_MS: return 320;
3354 case AV_CODEC_ID_MP1: return 384;
3355 case AV_CODEC_ID_ATRAC1: return 512;
3356 case AV_CODEC_ID_ATRAC3: return 1024;
3357 case AV_CODEC_ID_ATRAC3P: return 2048;
3358 case AV_CODEC_ID_MP2:
3359 case AV_CODEC_ID_MUSEPACK7: return 1152;
3360 case AV_CODEC_ID_AC3: return 1536;
3364 /* calc from sample rate */
3365 if (id == AV_CODEC_ID_TTA)
3366 return 256 * sr / 245;
3369 /* calc from sample rate and channels */
3370 if (id == AV_CODEC_ID_BINKAUDIO_DCT)
3371 return (480 << (sr / 22050)) / ch;
3376 /* calc from block_align */
3377 if (id == AV_CODEC_ID_SIPR) {
3379 case 20: return 160;
3380 case 19: return 144;
3381 case 29: return 288;
3382 case 37: return 480;
3384 } else if (id == AV_CODEC_ID_ILBC) {
3386 case 38: return 160;
3387 case 50: return 240;
3392 if (frame_bytes > 0) {
3393 /* calc from frame_bytes only */
3394 if (id == AV_CODEC_ID_TRUESPEECH)
3395 return 240 * (frame_bytes / 32);
3396 if (id == AV_CODEC_ID_NELLYMOSER)
3397 return 256 * (frame_bytes / 64);
3398 if (id == AV_CODEC_ID_RA_144)
3399 return 160 * (frame_bytes / 20);
3400 if (id == AV_CODEC_ID_G723_1)
3401 return 240 * (frame_bytes / 24);
3404 /* calc from frame_bytes and bits_per_coded_sample */
3405 if (id == AV_CODEC_ID_ADPCM_G726)
3406 return frame_bytes * 8 / bps;
3410 /* calc from frame_bytes and channels */
3412 case AV_CODEC_ID_ADPCM_AFC:
3413 return frame_bytes / (9 * ch) * 16;
3414 case AV_CODEC_ID_ADPCM_DTK:
3415 return frame_bytes / (16 * ch) * 28;
3416 case AV_CODEC_ID_ADPCM_4XM:
3417 case AV_CODEC_ID_ADPCM_IMA_ISS:
3418 return (frame_bytes - 4 * ch) * 2 / ch;
3419 case AV_CODEC_ID_ADPCM_IMA_SMJPEG:
3420 return (frame_bytes - 4) * 2 / ch;
3421 case AV_CODEC_ID_ADPCM_IMA_AMV:
3422 return (frame_bytes - 8) * 2 / ch;
3423 case AV_CODEC_ID_ADPCM_XA:
3424 return (frame_bytes / 128) * 224 / ch;
3425 case AV_CODEC_ID_INTERPLAY_DPCM:
3426 return (frame_bytes - 6 - ch) / ch;
3427 case AV_CODEC_ID_ROQ_DPCM:
3428 return (frame_bytes - 8) / ch;
3429 case AV_CODEC_ID_XAN_DPCM:
3430 return (frame_bytes - 2 * ch) / ch;
3431 case AV_CODEC_ID_MACE3:
3432 return 3 * frame_bytes / ch;
3433 case AV_CODEC_ID_MACE6:
3434 return 6 * frame_bytes / ch;
3435 case AV_CODEC_ID_PCM_LXF:
3436 return 2 * (frame_bytes / (5 * ch));
3437 case AV_CODEC_ID_IAC:
3438 case AV_CODEC_ID_IMC:
3439 return 4 * frame_bytes / ch;
3443 /* calc from frame_bytes, channels, and codec_tag */
3444 if (id == AV_CODEC_ID_SOL_DPCM) {
3446 return frame_bytes / ch;
3448 return frame_bytes * 2 / ch;
3453 /* calc from frame_bytes, channels, and block_align */
3454 int blocks = frame_bytes / ba;
3455 switch (avctx->codec_id) {
3456 case AV_CODEC_ID_ADPCM_IMA_WAV:
3457 if (bps < 2 || bps > 5)
3459 return blocks * (1 + (ba - 4 * ch) / (bps * ch) * 8);
3460 case AV_CODEC_ID_ADPCM_IMA_DK3:
3461 return blocks * (((ba - 16) * 2 / 3 * 4) / ch);
3462 case AV_CODEC_ID_ADPCM_IMA_DK4:
3463 return blocks * (1 + (ba - 4 * ch) * 2 / ch);
3464 case AV_CODEC_ID_ADPCM_IMA_RAD:
3465 return blocks * ((ba - 4 * ch) * 2 / ch);
3466 case AV_CODEC_ID_ADPCM_MS:
3467 return blocks * (2 + (ba - 7 * ch) * 2 / ch);
3472 /* calc from frame_bytes, channels, and bits_per_coded_sample */
3473 switch (avctx->codec_id) {
3474 case AV_CODEC_ID_PCM_DVD:
3477 return 2 * (frame_bytes / ((bps * 2 / 8) * ch));
3478 case AV_CODEC_ID_PCM_BLURAY:
3481 return frame_bytes / ((FFALIGN(ch, 2) * bps) / 8);
3482 case AV_CODEC_ID_S302M:
3483 return 2 * (frame_bytes / ((bps + 4) / 4)) / ch;
3489 /* Fall back on using frame_size */
3490 if (avctx->frame_size > 1 && frame_bytes)
3491 return avctx->frame_size;
3493 //For WMA we currently have no other means to calculate duration thus we
3494 //do it here by assuming CBR, which is true for all known cases.
3495 if (avctx->bit_rate>0 && frame_bytes>0 && avctx->sample_rate>0 && avctx->block_align>1) {
3496 if (avctx->codec_id == AV_CODEC_ID_WMAV1 || avctx->codec_id == AV_CODEC_ID_WMAV2)
3497 return (frame_bytes * 8LL * avctx->sample_rate) / avctx->bit_rate;
3504 int ff_thread_init(AVCodecContext *s)
3511 unsigned int av_xiphlacing(unsigned char *s, unsigned int v)
3525 int ff_match_2uint16(const uint16_t(*tab)[2], int size, int a, int b)
3528 for (i = 0; i < size && !(tab[i][0] == a && tab[i][1] == b); i++) ;
3532 #if FF_API_MISSING_SAMPLE
3533 FF_DISABLE_DEPRECATION_WARNINGS
3534 void av_log_missing_feature(void *avc, const char *feature, int want_sample)
3536 av_log(avc, AV_LOG_WARNING, "%s is not implemented. Update your FFmpeg "
3537 "version to the newest one from Git. If the problem still "
3538 "occurs, it means that your file has a feature which has not "
3539 "been implemented.\n", feature);
3541 av_log_ask_for_sample(avc, NULL);
3544 void av_log_ask_for_sample(void *avc, const char *msg, ...)
3546 va_list argument_list;
3548 va_start(argument_list, msg);
3551 av_vlog(avc, AV_LOG_WARNING, msg, argument_list);
3552 av_log(avc, AV_LOG_WARNING, "If you want to help, upload a sample "
3553 "of this file to ftp://upload.ffmpeg.org/incoming/ "
3554 "and contact the ffmpeg-devel mailing list. (ffmpeg-devel@ffmpeg.org)\n");
3556 va_end(argument_list);
3558 FF_ENABLE_DEPRECATION_WARNINGS
3559 #endif /* FF_API_MISSING_SAMPLE */
3561 static AVHWAccel *first_hwaccel = NULL;
3562 static AVHWAccel **last_hwaccel = &first_hwaccel;
3564 void av_register_hwaccel(AVHWAccel *hwaccel)
3566 AVHWAccel **p = last_hwaccel;
3567 hwaccel->next = NULL;
3568 while(*p || avpriv_atomic_ptr_cas((void * volatile *)p, NULL, hwaccel))
3570 last_hwaccel = &hwaccel->next;
3573 AVHWAccel *av_hwaccel_next(const AVHWAccel *hwaccel)
3575 return hwaccel ? hwaccel->next : first_hwaccel;
3578 int av_lockmgr_register(int (*cb)(void **mutex, enum AVLockOp op))
3581 // There is no good way to rollback a failure to destroy the
3582 // mutex, so we ignore failures.
3583 lockmgr_cb(&codec_mutex, AV_LOCK_DESTROY);
3584 lockmgr_cb(&avformat_mutex, AV_LOCK_DESTROY);
3587 avformat_mutex = NULL;
3591 void *new_codec_mutex = NULL;
3592 void *new_avformat_mutex = NULL;
3594 if (err = cb(&new_codec_mutex, AV_LOCK_CREATE)) {
3595 return err > 0 ? AVERROR_UNKNOWN : err;
3597 if (err = cb(&new_avformat_mutex, AV_LOCK_CREATE)) {
3598 // Ignore failures to destroy the newly created mutex.
3599 cb(&new_codec_mutex, AV_LOCK_DESTROY);
3600 return err > 0 ? AVERROR_UNKNOWN : err;
3603 codec_mutex = new_codec_mutex;
3604 avformat_mutex = new_avformat_mutex;
3610 int ff_lock_avcodec(AVCodecContext *log_ctx, const AVCodec *codec)
3613 if ((*lockmgr_cb)(&codec_mutex, AV_LOCK_OBTAIN))
3617 if (avpriv_atomic_int_add_and_fetch(&entangled_thread_counter, 1) != 1 &&
3618 !(codec->caps_internal & FF_CODEC_CAP_INIT_THREADSAFE)) {
3619 av_log(log_ctx, AV_LOG_ERROR,
3620 "Insufficient thread locking. At least %d threads are "
3621 "calling avcodec_open2() at the same time right now.\n",
3622 entangled_thread_counter);
3624 av_log(log_ctx, AV_LOG_ERROR, "No lock manager is set, please see av_lockmgr_register()\n");
3625 ff_avcodec_locked = 1;
3626 ff_unlock_avcodec();
3627 return AVERROR(EINVAL);
3629 av_assert0(!ff_avcodec_locked);
3630 ff_avcodec_locked = 1;
3634 int ff_unlock_avcodec(void)
3636 av_assert0(ff_avcodec_locked);
3637 ff_avcodec_locked = 0;
3638 avpriv_atomic_int_add_and_fetch(&entangled_thread_counter, -1);
3640 if ((*lockmgr_cb)(&codec_mutex, AV_LOCK_RELEASE))
3647 int avpriv_lock_avformat(void)
3650 if ((*lockmgr_cb)(&avformat_mutex, AV_LOCK_OBTAIN))
3656 int avpriv_unlock_avformat(void)
3659 if ((*lockmgr_cb)(&avformat_mutex, AV_LOCK_RELEASE))
3665 unsigned int avpriv_toupper4(unsigned int x)
3667 return av_toupper(x & 0xFF) +
3668 (av_toupper((x >> 8) & 0xFF) << 8) +
3669 (av_toupper((x >> 16) & 0xFF) << 16) +
3670 ((unsigned)av_toupper((x >> 24) & 0xFF) << 24);
3673 int ff_thread_ref_frame(ThreadFrame *dst, ThreadFrame *src)
3677 dst->owner = src->owner;
3679 ret = av_frame_ref(dst->f, src->f);
3683 av_assert0(!dst->progress);
3685 if (src->progress &&
3686 !(dst->progress = av_buffer_ref(src->progress))) {
3687 ff_thread_release_buffer(dst->owner, dst);
3688 return AVERROR(ENOMEM);
3696 enum AVPixelFormat ff_thread_get_format(AVCodecContext *avctx, const enum AVPixelFormat *fmt)
3698 return ff_get_format(avctx, fmt);
3701 int ff_thread_get_buffer(AVCodecContext *avctx, ThreadFrame *f, int flags)
3704 return ff_get_buffer(avctx, f->f, flags);
3707 void ff_thread_release_buffer(AVCodecContext *avctx, ThreadFrame *f)
3710 av_frame_unref(f->f);
3713 void ff_thread_finish_setup(AVCodecContext *avctx)
3717 void ff_thread_report_progress(ThreadFrame *f, int progress, int field)
3721 void ff_thread_await_progress(ThreadFrame *f, int progress, int field)
3725 int ff_thread_can_start_frame(AVCodecContext *avctx)
3730 int ff_alloc_entries(AVCodecContext *avctx, int count)
3735 void ff_reset_entries(AVCodecContext *avctx)
3739 void ff_thread_await_progress2(AVCodecContext *avctx, int field, int thread, int shift)
3743 void ff_thread_report_progress2(AVCodecContext *avctx, int field, int thread, int n)
3749 enum AVMediaType avcodec_get_type(enum AVCodecID codec_id)
3751 AVCodec *c= avcodec_find_decoder(codec_id);
3753 c= avcodec_find_encoder(codec_id);
3757 if (codec_id <= AV_CODEC_ID_NONE)
3758 return AVMEDIA_TYPE_UNKNOWN;
3759 else if (codec_id < AV_CODEC_ID_FIRST_AUDIO)
3760 return AVMEDIA_TYPE_VIDEO;
3761 else if (codec_id < AV_CODEC_ID_FIRST_SUBTITLE)
3762 return AVMEDIA_TYPE_AUDIO;
3763 else if (codec_id < AV_CODEC_ID_FIRST_UNKNOWN)
3764 return AVMEDIA_TYPE_SUBTITLE;
3766 return AVMEDIA_TYPE_UNKNOWN;
3769 int avcodec_is_open(AVCodecContext *s)
3771 return !!s->internal;
3774 int avpriv_bprint_to_extradata(AVCodecContext *avctx, struct AVBPrint *buf)
3779 ret = av_bprint_finalize(buf, &str);
3782 if (!av_bprint_is_complete(buf)) {
3784 return AVERROR(ENOMEM);
3787 avctx->extradata = str;
3788 /* Note: the string is NUL terminated (so extradata can be read as a
3789 * string), but the ending character is not accounted in the size (in
3790 * binary formats you are likely not supposed to mux that character). When
3791 * extradata is copied, it is also padded with FF_INPUT_BUFFER_PADDING_SIZE
3793 avctx->extradata_size = buf->len;
3797 const uint8_t *avpriv_find_start_code(const uint8_t *av_restrict p,
3799 uint32_t *av_restrict state)
3803 av_assert0(p <= end);
3807 for (i = 0; i < 3; i++) {
3808 uint32_t tmp = *state << 8;
3809 *state = tmp + *(p++);
3810 if (tmp == 0x100 || p == end)
3815 if (p[-1] > 1 ) p += 3;
3816 else if (p[-2] ) p += 2;
3817 else if (p[-3]|(p[-1]-1)) p++;
3824 p = FFMIN(p, end) - 4;
3825 *state = AV_RB32(p);