3 * Copyright (c) 2001 Fabrice Bellard
4 * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
6 * This file is part of Libav.
8 * Libav 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 * Libav 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 Libav; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
29 #include "libavutil/avassert.h"
30 #include "libavutil/avstring.h"
31 #include "libavutil/channel_layout.h"
32 #include "libavutil/crc.h"
33 #include "libavutil/mathematics.h"
34 #include "libavutil/pixdesc.h"
35 #include "libavutil/imgutils.h"
36 #include "libavutil/samplefmt.h"
37 #include "libavutil/dict.h"
40 #include "libavutil/opt.h"
43 #include "bytestream.h"
49 static int volatile entangled_thread_counter = 0;
50 static int (*ff_lockmgr_cb)(void **mutex, enum AVLockOp op);
51 static void *codec_mutex;
52 static void *avformat_mutex;
54 void *av_fast_realloc(void *ptr, unsigned int *size, size_t min_size)
59 min_size = FFMAX(17 * min_size / 16 + 32, min_size);
61 ptr = av_realloc(ptr, min_size);
62 /* we could set this to the unmodified min_size but this is safer
63 * if the user lost the ptr and uses NULL now
73 void av_fast_malloc(void *ptr, unsigned int *size, size_t min_size)
78 min_size = FFMAX(17 * min_size / 16 + 32, min_size);
80 *p = av_malloc(min_size);
86 void av_fast_padded_malloc(void *ptr, unsigned int *size, size_t min_size)
89 if (min_size > SIZE_MAX - FF_INPUT_BUFFER_PADDING_SIZE) {
94 av_fast_malloc(p, size, min_size + FF_INPUT_BUFFER_PADDING_SIZE);
96 memset((uint8_t *)*p + min_size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
99 /* encoder management */
100 static AVCodec *first_avcodec = NULL;
102 AVCodec *av_codec_next(const AVCodec *c)
107 return first_avcodec;
110 static void avcodec_init(void)
112 static int initialized = 0;
114 if (initialized != 0)
118 ff_dsputil_static_init();
121 int av_codec_is_encoder(const AVCodec *codec)
123 return codec && (codec->encode_sub || codec->encode2);
126 int av_codec_is_decoder(const AVCodec *codec)
128 return codec && codec->decode;
131 void avcodec_register(AVCodec *codec)
141 if (codec->init_static_data)
142 codec->init_static_data(codec);
145 unsigned avcodec_get_edge_width(void)
150 void avcodec_set_dimensions(AVCodecContext *s, int width, int height)
152 s->coded_width = width;
153 s->coded_height = height;
158 #define INTERNAL_BUFFER_SIZE (32 + 1)
160 #if (ARCH_ARM && HAVE_NEON) || ARCH_PPC || HAVE_MMX
161 # define STRIDE_ALIGN 16
163 # define STRIDE_ALIGN 8
166 void avcodec_align_dimensions2(AVCodecContext *s, int *width, int *height,
167 int linesize_align[AV_NUM_DATA_POINTERS])
173 switch (s->pix_fmt) {
174 case AV_PIX_FMT_YUV420P:
175 case AV_PIX_FMT_YUYV422:
176 case AV_PIX_FMT_UYVY422:
177 case AV_PIX_FMT_YUV422P:
178 case AV_PIX_FMT_YUV440P:
179 case AV_PIX_FMT_YUV444P:
180 case AV_PIX_FMT_GBRP:
181 case AV_PIX_FMT_GRAY8:
182 case AV_PIX_FMT_GRAY16BE:
183 case AV_PIX_FMT_GRAY16LE:
184 case AV_PIX_FMT_YUVJ420P:
185 case AV_PIX_FMT_YUVJ422P:
186 case AV_PIX_FMT_YUVJ440P:
187 case AV_PIX_FMT_YUVJ444P:
188 case AV_PIX_FMT_YUVA420P:
189 case AV_PIX_FMT_YUVA422P:
190 case AV_PIX_FMT_YUVA444P:
191 case AV_PIX_FMT_YUV420P9LE:
192 case AV_PIX_FMT_YUV420P9BE:
193 case AV_PIX_FMT_YUV420P10LE:
194 case AV_PIX_FMT_YUV420P10BE:
195 case AV_PIX_FMT_YUV422P9LE:
196 case AV_PIX_FMT_YUV422P9BE:
197 case AV_PIX_FMT_YUV422P10LE:
198 case AV_PIX_FMT_YUV422P10BE:
199 case AV_PIX_FMT_YUV444P9LE:
200 case AV_PIX_FMT_YUV444P9BE:
201 case AV_PIX_FMT_YUV444P10LE:
202 case AV_PIX_FMT_YUV444P10BE:
203 case AV_PIX_FMT_GBRP9LE:
204 case AV_PIX_FMT_GBRP9BE:
205 case AV_PIX_FMT_GBRP10LE:
206 case AV_PIX_FMT_GBRP10BE:
207 w_align = 16; //FIXME assume 16 pixel per macroblock
208 h_align = 16 * 2; // interlaced needs 2 macroblocks height
210 case AV_PIX_FMT_YUV411P:
211 case AV_PIX_FMT_UYYVYY411:
215 case AV_PIX_FMT_YUV410P:
216 if (s->codec_id == AV_CODEC_ID_SVQ1) {
220 case AV_PIX_FMT_RGB555:
221 if (s->codec_id == AV_CODEC_ID_RPZA) {
225 case AV_PIX_FMT_PAL8:
226 case AV_PIX_FMT_BGR8:
227 case AV_PIX_FMT_RGB8:
228 if (s->codec_id == AV_CODEC_ID_SMC) {
233 case AV_PIX_FMT_BGR24:
234 if ((s->codec_id == AV_CODEC_ID_MSZH) ||
235 (s->codec_id == AV_CODEC_ID_ZLIB)) {
246 *width = FFALIGN(*width, w_align);
247 *height = FFALIGN(*height, h_align);
248 if (s->codec_id == AV_CODEC_ID_H264)
249 // some of the optimized chroma MC reads one line too much
252 for (i = 0; i < 4; i++)
253 linesize_align[i] = STRIDE_ALIGN;
256 void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height)
258 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(s->pix_fmt);
259 int chroma_shift = desc->log2_chroma_w;
260 int linesize_align[AV_NUM_DATA_POINTERS];
263 avcodec_align_dimensions2(s, width, height, linesize_align);
264 align = FFMAX(linesize_align[0], linesize_align[3]);
265 linesize_align[1] <<= chroma_shift;
266 linesize_align[2] <<= chroma_shift;
267 align = FFMAX3(align, linesize_align[1], linesize_align[2]);
268 *width = FFALIGN(*width, align);
271 int avcodec_fill_audio_frame(AVFrame *frame, int nb_channels,
272 enum AVSampleFormat sample_fmt, const uint8_t *buf,
273 int buf_size, int align)
275 int ch, planar, needed_size, ret = 0;
277 needed_size = av_samples_get_buffer_size(NULL, nb_channels,
278 frame->nb_samples, sample_fmt,
280 if (buf_size < needed_size)
281 return AVERROR(EINVAL);
283 planar = av_sample_fmt_is_planar(sample_fmt);
284 if (planar && nb_channels > AV_NUM_DATA_POINTERS) {
285 if (!(frame->extended_data = av_mallocz(nb_channels *
286 sizeof(*frame->extended_data))))
287 return AVERROR(ENOMEM);
289 frame->extended_data = frame->data;
292 if ((ret = av_samples_fill_arrays(frame->extended_data, &frame->linesize[0],
293 buf, nb_channels, frame->nb_samples,
294 sample_fmt, align)) < 0) {
295 if (frame->extended_data != frame->data)
296 av_free(frame->extended_data);
299 if (frame->extended_data != frame->data) {
300 for (ch = 0; ch < AV_NUM_DATA_POINTERS; ch++)
301 frame->data[ch] = frame->extended_data[ch];
307 static int audio_get_buffer(AVCodecContext *avctx, AVFrame *frame)
309 AVCodecInternal *avci = avctx->internal;
312 av_freep(&avci->audio_data);
313 buf_size = av_samples_get_buffer_size(NULL, avctx->channels,
314 frame->nb_samples, avctx->sample_fmt,
317 return AVERROR(EINVAL);
319 frame->data[0] = av_mallocz(buf_size);
321 return AVERROR(ENOMEM);
323 ret = avcodec_fill_audio_frame(frame, avctx->channels, avctx->sample_fmt,
324 frame->data[0], buf_size, 0);
326 av_freep(&frame->data[0]);
330 avci->audio_data = frame->data[0];
331 if (avctx->debug & FF_DEBUG_BUFFERS)
332 av_log(avctx, AV_LOG_DEBUG, "default_get_buffer called on frame %p, "
333 "internal audio buffer used\n", frame);
338 static int video_get_buffer(AVCodecContext *s, AVFrame *pic)
344 AVCodecInternal *avci = s->internal;
346 if (pic->data[0] != NULL) {
347 av_log(s, AV_LOG_ERROR, "pic->data[0]!=NULL in avcodec_default_get_buffer\n");
350 if (avci->buffer_count >= INTERNAL_BUFFER_SIZE) {
351 av_log(s, AV_LOG_ERROR, "buffer_count overflow (missing release_buffer?)\n");
355 if (av_image_check_size(w, h, 0, s))
359 avci->buffer = av_mallocz((INTERNAL_BUFFER_SIZE + 1) *
360 sizeof(InternalBuffer));
363 buf = &avci->buffer[avci->buffer_count];
365 if (buf->base[0] && (buf->width != w || buf->height != h || buf->pix_fmt != s->pix_fmt)) {
366 for (i = 0; i < AV_NUM_DATA_POINTERS; i++) {
367 av_freep(&buf->base[i]);
373 int h_chroma_shift, v_chroma_shift;
378 int stride_align[AV_NUM_DATA_POINTERS];
379 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(s->pix_fmt);
380 const int pixel_size = desc->comp[0].step_minus1 + 1;
382 av_pix_fmt_get_chroma_sub_sample(s->pix_fmt, &h_chroma_shift,
385 avcodec_align_dimensions2(s, &w, &h, stride_align);
387 if (!(s->flags & CODEC_FLAG_EMU_EDGE)) {
393 // NOTE: do not align linesizes individually, this breaks e.g. assumptions
394 // that linesize[0] == 2*linesize[1] in the MPEG-encoder for 4:2:2
395 av_image_fill_linesizes(picture.linesize, s->pix_fmt, w);
396 // increase alignment of w for next try (rhs gives the lowest bit set in w)
400 for (i = 0; i < 4; i++)
401 unaligned |= picture.linesize[i] % stride_align[i];
404 tmpsize = av_image_fill_pointers(picture.data, s->pix_fmt, h, NULL, picture.linesize);
408 for (i = 0; i < 3 && picture.data[i + 1]; i++)
409 size[i] = picture.data[i + 1] - picture.data[i];
410 size[i] = tmpsize - (picture.data[i] - picture.data[0]);
412 memset(buf->base, 0, sizeof(buf->base));
413 memset(buf->data, 0, sizeof(buf->data));
415 for (i = 0; i < 4 && size[i]; i++) {
416 const int h_shift = i == 0 ? 0 : h_chroma_shift;
417 const int v_shift = i == 0 ? 0 : v_chroma_shift;
419 buf->linesize[i] = picture.linesize[i];
421 buf->base[i] = av_malloc(size[i] + 16); //FIXME 16
422 if (buf->base[i] == NULL)
425 // no edge if EDGE EMU or not planar YUV
426 if ((s->flags & CODEC_FLAG_EMU_EDGE) || !size[2])
427 buf->data[i] = buf->base[i];
429 buf->data[i] = buf->base[i] + FFALIGN((buf->linesize[i] * EDGE_WIDTH >> v_shift) + (pixel_size * EDGE_WIDTH >> h_shift), stride_align[i]);
431 for (; i < AV_NUM_DATA_POINTERS; i++) {
432 buf->base[i] = buf->data[i] = NULL;
433 buf->linesize[i] = 0;
435 if (size[1] && !size[2])
436 avpriv_set_systematic_pal2((uint32_t *)buf->data[1], s->pix_fmt);
437 buf->width = s->width;
438 buf->height = s->height;
439 buf->pix_fmt = s->pix_fmt;
442 for (i = 0; i < AV_NUM_DATA_POINTERS; i++) {
443 pic->base[i] = buf->base[i];
444 pic->data[i] = buf->data[i];
445 pic->linesize[i] = buf->linesize[i];
447 pic->extended_data = pic->data;
448 avci->buffer_count++;
450 if (s->debug & FF_DEBUG_BUFFERS)
451 av_log(s, AV_LOG_DEBUG, "default_get_buffer called on pic %p, %d "
452 "buffers used\n", pic, avci->buffer_count);
457 int avcodec_default_get_buffer(AVCodecContext *avctx, AVFrame *frame)
459 frame->type = FF_BUFFER_TYPE_INTERNAL;
460 switch (avctx->codec_type) {
461 case AVMEDIA_TYPE_VIDEO:
462 return video_get_buffer(avctx, frame);
463 case AVMEDIA_TYPE_AUDIO:
464 return audio_get_buffer(avctx, frame);
470 int ff_get_buffer(AVCodecContext *avctx, AVFrame *frame)
472 switch (avctx->codec_type) {
473 case AVMEDIA_TYPE_VIDEO:
474 frame->width = avctx->width;
475 frame->height = avctx->height;
476 frame->format = avctx->pix_fmt;
477 frame->sample_aspect_ratio = avctx->sample_aspect_ratio;
479 case AVMEDIA_TYPE_AUDIO:
480 frame->sample_rate = avctx->sample_rate;
481 frame->format = avctx->sample_fmt;
482 frame->channel_layout = avctx->channel_layout;
484 default: return AVERROR(EINVAL);
487 frame->pkt_pts = avctx->pkt ? avctx->pkt->pts : AV_NOPTS_VALUE;
488 frame->reordered_opaque = avctx->reordered_opaque;
490 return avctx->get_buffer(avctx, frame);
493 void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic)
496 InternalBuffer *buf, *last;
497 AVCodecInternal *avci = s->internal;
499 assert(s->codec_type == AVMEDIA_TYPE_VIDEO);
501 assert(pic->type == FF_BUFFER_TYPE_INTERNAL);
502 assert(avci->buffer_count);
505 buf = NULL; /* avoids warning */
506 for (i = 0; i < avci->buffer_count; i++) { //just 3-5 checks so is not worth to optimize
507 buf = &avci->buffer[i];
508 if (buf->data[0] == pic->data[0])
511 assert(i < avci->buffer_count);
512 avci->buffer_count--;
513 last = &avci->buffer[avci->buffer_count];
516 FFSWAP(InternalBuffer, *buf, *last);
519 for (i = 0; i < AV_NUM_DATA_POINTERS; i++)
521 // pic->base[i]=NULL;
523 if (s->debug & FF_DEBUG_BUFFERS)
524 av_log(s, AV_LOG_DEBUG, "default_release_buffer called on pic %p, %d "
525 "buffers used\n", pic, avci->buffer_count);
528 int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic)
533 assert(s->codec_type == AVMEDIA_TYPE_VIDEO);
535 /* If no picture return a new buffer */
536 if (pic->data[0] == NULL) {
537 /* We will copy from buffer, so must be readable */
538 pic->buffer_hints |= FF_BUFFER_HINTS_READABLE;
539 return ff_get_buffer(s, pic);
542 assert(s->pix_fmt == pic->format);
544 /* If internal buffer type return the same buffer */
545 if (pic->type == FF_BUFFER_TYPE_INTERNAL) {
547 pic->pkt_pts = s->pkt->pts;
549 pic->pkt_pts = AV_NOPTS_VALUE;
550 pic->reordered_opaque = s->reordered_opaque;
555 * Not internal type and reget_buffer not overridden, emulate cr buffer
558 for (i = 0; i < AV_NUM_DATA_POINTERS; i++)
559 pic->data[i] = pic->base[i] = NULL;
561 /* Allocate new frame */
562 if (ff_get_buffer(s, pic))
564 /* Copy image data from old buffer to new buffer */
565 av_picture_copy((AVPicture *)pic, (AVPicture *)&temp_pic, s->pix_fmt, s->width,
567 s->release_buffer(s, &temp_pic); // Release old frame
571 int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2), void *arg, int *ret, int count, int size)
575 for (i = 0; i < count; i++) {
576 int r = func(c, (char *)arg + i * size);
583 int avcodec_default_execute2(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2, int jobnr, int threadnr), void *arg, int *ret, int count)
587 for (i = 0; i < count; i++) {
588 int r = func(c, arg, i, 0);
595 static int is_hwaccel_pix_fmt(enum AVPixelFormat pix_fmt)
597 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
598 return desc->flags & PIX_FMT_HWACCEL;
601 enum AVPixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum AVPixelFormat *fmt)
603 while (*fmt != AV_PIX_FMT_NONE && is_hwaccel_pix_fmt(*fmt))
608 void avcodec_get_frame_defaults(AVFrame *frame)
610 if (frame->extended_data != frame->data)
611 av_freep(&frame->extended_data);
613 memset(frame, 0, sizeof(AVFrame));
615 frame->pts = AV_NOPTS_VALUE;
616 frame->key_frame = 1;
617 frame->sample_aspect_ratio = (AVRational) {0, 1 };
618 frame->format = -1; /* unknown */
619 frame->extended_data = frame->data;
622 AVFrame *avcodec_alloc_frame(void)
624 AVFrame *frame = av_mallocz(sizeof(AVFrame));
629 avcodec_get_frame_defaults(frame);
634 void avcodec_free_frame(AVFrame **frame)
638 if (!frame || !*frame)
643 if (f->extended_data != f->data)
644 av_freep(&f->extended_data);
649 int attribute_align_arg avcodec_open2(AVCodecContext *avctx, const AVCodec *codec, AVDictionary **options)
652 AVDictionary *tmp = NULL;
654 if (avcodec_is_open(avctx))
657 if ((!codec && !avctx->codec)) {
658 av_log(avctx, AV_LOG_ERROR, "No codec provided to avcodec_open2().\n");
659 return AVERROR(EINVAL);
661 if ((codec && avctx->codec && codec != avctx->codec)) {
662 av_log(avctx, AV_LOG_ERROR, "This AVCodecContext was allocated for %s, "
663 "but %s passed to avcodec_open2().\n", avctx->codec->name, codec->name);
664 return AVERROR(EINVAL);
667 codec = avctx->codec;
669 if (avctx->extradata_size < 0 || avctx->extradata_size >= FF_MAX_EXTRADATA_SIZE)
670 return AVERROR(EINVAL);
673 av_dict_copy(&tmp, *options, 0);
675 /* If there is a user-supplied mutex locking routine, call it. */
677 if ((*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_OBTAIN))
681 entangled_thread_counter++;
682 if (entangled_thread_counter != 1) {
683 av_log(avctx, AV_LOG_ERROR, "insufficient thread locking around avcodec_open/close()\n");
688 avctx->internal = av_mallocz(sizeof(AVCodecInternal));
689 if (!avctx->internal) {
690 ret = AVERROR(ENOMEM);
694 if (codec->priv_data_size > 0) {
695 if (!avctx->priv_data) {
696 avctx->priv_data = av_mallocz(codec->priv_data_size);
697 if (!avctx->priv_data) {
698 ret = AVERROR(ENOMEM);
701 if (codec->priv_class) {
702 *(const AVClass **)avctx->priv_data = codec->priv_class;
703 av_opt_set_defaults(avctx->priv_data);
706 if (codec->priv_class && (ret = av_opt_set_dict(avctx->priv_data, &tmp)) < 0)
709 avctx->priv_data = NULL;
711 if ((ret = av_opt_set_dict(avctx, &tmp)) < 0)
714 if (avctx->coded_width && avctx->coded_height)
715 avcodec_set_dimensions(avctx, avctx->coded_width, avctx->coded_height);
716 else if (avctx->width && avctx->height)
717 avcodec_set_dimensions(avctx, avctx->width, avctx->height);
719 if ((avctx->coded_width || avctx->coded_height || avctx->width || avctx->height)
720 && ( av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx) < 0
721 || av_image_check_size(avctx->width, avctx->height, 0, avctx) < 0)) {
722 av_log(avctx, AV_LOG_WARNING, "ignoring invalid width/height values\n");
723 avcodec_set_dimensions(avctx, 0, 0);
726 /* if the decoder init function was already called previously,
727 * free the already allocated subtitle_header before overwriting it */
728 if (av_codec_is_decoder(codec))
729 av_freep(&avctx->subtitle_header);
731 if (avctx->channels > FF_SANE_NB_CHANNELS) {
732 ret = AVERROR(EINVAL);
736 avctx->codec = codec;
737 if ((avctx->codec_type == AVMEDIA_TYPE_UNKNOWN || avctx->codec_type == codec->type) &&
738 avctx->codec_id == AV_CODEC_ID_NONE) {
739 avctx->codec_type = codec->type;
740 avctx->codec_id = codec->id;
742 if (avctx->codec_id != codec->id || (avctx->codec_type != codec->type
743 && avctx->codec_type != AVMEDIA_TYPE_ATTACHMENT)) {
744 av_log(avctx, AV_LOG_ERROR, "codec type or id mismatches\n");
745 ret = AVERROR(EINVAL);
748 avctx->frame_number = 0;
750 if (avctx->codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
751 avctx->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
752 ret = AVERROR_EXPERIMENTAL;
756 if (avctx->codec_type == AVMEDIA_TYPE_AUDIO &&
757 (!avctx->time_base.num || !avctx->time_base.den)) {
758 avctx->time_base.num = 1;
759 avctx->time_base.den = avctx->sample_rate;
762 if (HAVE_THREADS && !avctx->thread_opaque) {
763 ret = ff_thread_init(avctx);
768 if (!HAVE_THREADS && !(codec->capabilities & CODEC_CAP_AUTO_THREADS))
769 avctx->thread_count = 1;
771 if (av_codec_is_encoder(avctx->codec)) {
773 if (avctx->codec->sample_fmts) {
774 for (i = 0; avctx->codec->sample_fmts[i] != AV_SAMPLE_FMT_NONE; i++) {
775 if (avctx->sample_fmt == avctx->codec->sample_fmts[i])
777 if (avctx->channels == 1 &&
778 av_get_planar_sample_fmt(avctx->sample_fmt) ==
779 av_get_planar_sample_fmt(avctx->codec->sample_fmts[i])) {
780 avctx->sample_fmt = avctx->codec->sample_fmts[i];
784 if (avctx->codec->sample_fmts[i] == AV_SAMPLE_FMT_NONE) {
785 av_log(avctx, AV_LOG_ERROR, "Specified sample_fmt is not supported.\n");
786 ret = AVERROR(EINVAL);
790 if (avctx->codec->pix_fmts) {
791 for (i = 0; avctx->codec->pix_fmts[i] != AV_PIX_FMT_NONE; i++)
792 if (avctx->pix_fmt == avctx->codec->pix_fmts[i])
794 if (avctx->codec->pix_fmts[i] == AV_PIX_FMT_NONE) {
795 av_log(avctx, AV_LOG_ERROR, "Specified pix_fmt is not supported\n");
796 ret = AVERROR(EINVAL);
800 if (avctx->codec->supported_samplerates) {
801 for (i = 0; avctx->codec->supported_samplerates[i] != 0; i++)
802 if (avctx->sample_rate == avctx->codec->supported_samplerates[i])
804 if (avctx->codec->supported_samplerates[i] == 0) {
805 av_log(avctx, AV_LOG_ERROR, "Specified sample_rate is not supported\n");
806 ret = AVERROR(EINVAL);
810 if (avctx->codec->channel_layouts) {
811 if (!avctx->channel_layout) {
812 av_log(avctx, AV_LOG_WARNING, "channel_layout not specified\n");
814 for (i = 0; avctx->codec->channel_layouts[i] != 0; i++)
815 if (avctx->channel_layout == avctx->codec->channel_layouts[i])
817 if (avctx->codec->channel_layouts[i] == 0) {
818 av_log(avctx, AV_LOG_ERROR, "Specified channel_layout is not supported\n");
819 ret = AVERROR(EINVAL);
824 if (avctx->channel_layout && avctx->channels) {
825 if (av_get_channel_layout_nb_channels(avctx->channel_layout) != avctx->channels) {
826 av_log(avctx, AV_LOG_ERROR, "channel layout does not match number of channels\n");
827 ret = AVERROR(EINVAL);
830 } else if (avctx->channel_layout) {
831 avctx->channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
834 if (!avctx->rc_initial_buffer_occupancy)
835 avctx->rc_initial_buffer_occupancy = avctx->rc_buffer_size * 3 / 4;
838 if (avctx->codec->init && !(avctx->active_thread_type & FF_THREAD_FRAME)) {
839 ret = avctx->codec->init(avctx);
845 if (av_codec_is_decoder(avctx->codec)) {
846 /* validate channel layout from the decoder */
847 if (avctx->channel_layout) {
848 int channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
849 if (!avctx->channels)
850 avctx->channels = channels;
851 else if (channels != avctx->channels) {
852 av_log(avctx, AV_LOG_WARNING,
853 "channel layout does not match number of channels\n");
854 avctx->channel_layout = 0;
857 if (avctx->channels && avctx->channels < 0 ||
858 avctx->channels > FF_SANE_NB_CHANNELS) {
859 ret = AVERROR(EINVAL);
864 entangled_thread_counter--;
866 /* Release any user-supplied mutex. */
868 (*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_RELEASE);
871 av_dict_free(options);
878 av_freep(&avctx->priv_data);
879 av_freep(&avctx->internal);
884 int ff_alloc_packet(AVPacket *avpkt, int size)
886 if (size > INT_MAX - FF_INPUT_BUFFER_PADDING_SIZE)
887 return AVERROR(EINVAL);
890 AVBufferRef *buf = avpkt->buf;
891 #if FF_API_DESTRUCT_PACKET
892 void *destruct = avpkt->destruct;
895 if (avpkt->size < size)
896 return AVERROR(EINVAL);
898 av_init_packet(avpkt);
899 #if FF_API_DESTRUCT_PACKET
900 avpkt->destruct = destruct;
906 return av_new_packet(avpkt, size);
911 * Pad last frame with silence.
913 static int pad_last_frame(AVCodecContext *s, AVFrame **dst, const AVFrame *src)
915 AVFrame *frame = NULL;
919 if (!(frame = avcodec_alloc_frame()))
920 return AVERROR(ENOMEM);
923 if ((ret = av_samples_get_buffer_size(&frame->linesize[0], s->channels,
924 s->frame_size, s->sample_fmt, 0)) < 0)
927 if (!(buf = av_malloc(ret))) {
928 ret = AVERROR(ENOMEM);
932 frame->nb_samples = s->frame_size;
933 if ((ret = avcodec_fill_audio_frame(frame, s->channels, s->sample_fmt,
936 if ((ret = av_samples_copy(frame->extended_data, src->extended_data, 0, 0,
937 src->nb_samples, s->channels, s->sample_fmt)) < 0)
939 if ((ret = av_samples_set_silence(frame->extended_data, src->nb_samples,
940 frame->nb_samples - src->nb_samples,
941 s->channels, s->sample_fmt)) < 0)
949 if (frame->extended_data != frame->data)
950 av_freep(&frame->extended_data);
956 int attribute_align_arg avcodec_encode_audio2(AVCodecContext *avctx,
958 const AVFrame *frame,
962 AVFrame *padded_frame = NULL;
964 int user_packet = !!avpkt->data;
968 if (!(avctx->codec->capabilities & CODEC_CAP_DELAY) && !frame) {
969 av_free_packet(avpkt);
970 av_init_packet(avpkt);
974 /* ensure that extended_data is properly set */
975 if (frame && !frame->extended_data) {
976 if (av_sample_fmt_is_planar(avctx->sample_fmt) &&
977 avctx->channels > AV_NUM_DATA_POINTERS) {
978 av_log(avctx, AV_LOG_ERROR, "Encoding to a planar sample format, "
979 "with more than %d channels, but extended_data is not set.\n",
980 AV_NUM_DATA_POINTERS);
981 return AVERROR(EINVAL);
983 av_log(avctx, AV_LOG_WARNING, "extended_data is not set.\n");
986 tmp.extended_data = tmp.data;
990 /* check for valid frame size */
992 if (avctx->codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME) {
993 if (frame->nb_samples > avctx->frame_size)
994 return AVERROR(EINVAL);
995 } else if (!(avctx->codec->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE)) {
996 if (frame->nb_samples < avctx->frame_size &&
997 !avctx->internal->last_audio_frame) {
998 ret = pad_last_frame(avctx, &padded_frame, frame);
1002 frame = padded_frame;
1003 avctx->internal->last_audio_frame = 1;
1006 if (frame->nb_samples != avctx->frame_size) {
1007 ret = AVERROR(EINVAL);
1013 ret = avctx->codec->encode2(avctx, avpkt, frame, got_packet_ptr);
1015 if (*got_packet_ptr) {
1016 if (!(avctx->codec->capabilities & CODEC_CAP_DELAY)) {
1017 if (avpkt->pts == AV_NOPTS_VALUE)
1018 avpkt->pts = frame->pts;
1019 if (!avpkt->duration)
1020 avpkt->duration = ff_samples_to_time_base(avctx,
1023 avpkt->dts = avpkt->pts;
1028 if (!user_packet && avpkt->size) {
1029 ret = av_buffer_realloc(&avpkt->buf, avpkt->size);
1031 avpkt->data = avpkt->buf->data;
1034 avctx->frame_number++;
1037 if (ret < 0 || !*got_packet_ptr) {
1038 av_free_packet(avpkt);
1039 av_init_packet(avpkt);
1043 /* NOTE: if we add any audio encoders which output non-keyframe packets,
1044 * this needs to be moved to the encoders, but for now we can do it
1045 * here to simplify things */
1046 avpkt->flags |= AV_PKT_FLAG_KEY;
1050 av_freep(&padded_frame->data[0]);
1051 if (padded_frame->extended_data != padded_frame->data)
1052 av_freep(&padded_frame->extended_data);
1053 av_freep(&padded_frame);
1059 #if FF_API_OLD_ENCODE_AUDIO
1060 int attribute_align_arg avcodec_encode_audio(AVCodecContext *avctx,
1061 uint8_t *buf, int buf_size,
1062 const short *samples)
1065 AVFrame frame0 = { { 0 } };
1067 int ret, samples_size, got_packet;
1069 av_init_packet(&pkt);
1071 pkt.size = buf_size;
1075 avcodec_get_frame_defaults(frame);
1077 if (avctx->frame_size) {
1078 frame->nb_samples = avctx->frame_size;
1080 /* if frame_size is not set, the number of samples must be
1081 * calculated from the buffer size */
1083 if (!av_get_bits_per_sample(avctx->codec_id)) {
1084 av_log(avctx, AV_LOG_ERROR, "avcodec_encode_audio() does not "
1085 "support this codec\n");
1086 return AVERROR(EINVAL);
1088 nb_samples = (int64_t)buf_size * 8 /
1089 (av_get_bits_per_sample(avctx->codec_id) *
1091 if (nb_samples >= INT_MAX)
1092 return AVERROR(EINVAL);
1093 frame->nb_samples = nb_samples;
1096 /* it is assumed that the samples buffer is large enough based on the
1097 * relevant parameters */
1098 samples_size = av_samples_get_buffer_size(NULL, avctx->channels,
1100 avctx->sample_fmt, 1);
1101 if ((ret = avcodec_fill_audio_frame(frame, avctx->channels,
1103 (const uint8_t *)samples,
1107 /* fabricate frame pts from sample count.
1108 * this is needed because the avcodec_encode_audio() API does not have
1109 * a way for the user to provide pts */
1110 frame->pts = ff_samples_to_time_base(avctx,
1111 avctx->internal->sample_count);
1112 avctx->internal->sample_count += frame->nb_samples;
1118 ret = avcodec_encode_audio2(avctx, &pkt, frame, &got_packet);
1119 if (!ret && got_packet && avctx->coded_frame) {
1120 avctx->coded_frame->pts = pkt.pts;
1121 avctx->coded_frame->key_frame = !!(pkt.flags & AV_PKT_FLAG_KEY);
1123 /* free any side data since we cannot return it */
1124 if (pkt.side_data_elems > 0) {
1126 for (i = 0; i < pkt.side_data_elems; i++)
1127 av_free(pkt.side_data[i].data);
1128 av_freep(&pkt.side_data);
1129 pkt.side_data_elems = 0;
1132 if (frame && frame->extended_data != frame->data)
1133 av_free(frame->extended_data);
1135 return ret ? ret : pkt.size;
1140 #if FF_API_OLD_ENCODE_VIDEO
1141 int attribute_align_arg avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
1142 const AVFrame *pict)
1145 int ret, got_packet = 0;
1147 if (buf_size < FF_MIN_BUFFER_SIZE) {
1148 av_log(avctx, AV_LOG_ERROR, "buffer smaller than minimum size\n");
1152 av_init_packet(&pkt);
1154 pkt.size = buf_size;
1156 ret = avcodec_encode_video2(avctx, &pkt, pict, &got_packet);
1157 if (!ret && got_packet && avctx->coded_frame) {
1158 avctx->coded_frame->pts = pkt.pts;
1159 avctx->coded_frame->key_frame = !!(pkt.flags & AV_PKT_FLAG_KEY);
1162 /* free any side data since we cannot return it */
1163 if (pkt.side_data_elems > 0) {
1165 for (i = 0; i < pkt.side_data_elems; i++)
1166 av_free(pkt.side_data[i].data);
1167 av_freep(&pkt.side_data);
1168 pkt.side_data_elems = 0;
1171 return ret ? ret : pkt.size;
1176 int attribute_align_arg avcodec_encode_video2(AVCodecContext *avctx,
1178 const AVFrame *frame,
1179 int *got_packet_ptr)
1182 int user_packet = !!avpkt->data;
1184 *got_packet_ptr = 0;
1186 if (!(avctx->codec->capabilities & CODEC_CAP_DELAY) && !frame) {
1187 av_free_packet(avpkt);
1188 av_init_packet(avpkt);
1193 if (av_image_check_size(avctx->width, avctx->height, 0, avctx))
1194 return AVERROR(EINVAL);
1196 av_assert0(avctx->codec->encode2);
1198 ret = avctx->codec->encode2(avctx, avpkt, frame, got_packet_ptr);
1200 if (!*got_packet_ptr)
1202 else if (!(avctx->codec->capabilities & CODEC_CAP_DELAY))
1203 avpkt->pts = avpkt->dts = frame->pts;
1205 if (!user_packet && avpkt->size) {
1206 ret = av_buffer_realloc(&avpkt->buf, avpkt->size);
1208 avpkt->data = avpkt->buf->data;
1211 avctx->frame_number++;
1214 if (ret < 0 || !*got_packet_ptr)
1215 av_free_packet(avpkt);
1221 int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size,
1222 const AVSubtitle *sub)
1225 if (sub->start_display_time) {
1226 av_log(avctx, AV_LOG_ERROR, "start_display_time must be 0.\n");
1229 if (sub->num_rects == 0 || !sub->rects)
1231 ret = avctx->codec->encode_sub(avctx, buf, buf_size, sub);
1232 avctx->frame_number++;
1236 static void apply_param_change(AVCodecContext *avctx, AVPacket *avpkt)
1239 const uint8_t *data;
1242 if (!(avctx->codec->capabilities & CODEC_CAP_PARAM_CHANGE))
1245 data = av_packet_get_side_data(avpkt, AV_PKT_DATA_PARAM_CHANGE, &size);
1246 if (!data || size < 4)
1248 flags = bytestream_get_le32(&data);
1250 if (size < 4) /* Required for any of the changes */
1252 if (flags & AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_COUNT) {
1253 avctx->channels = bytestream_get_le32(&data);
1256 if (flags & AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_LAYOUT) {
1259 avctx->channel_layout = bytestream_get_le64(&data);
1264 if (flags & AV_SIDE_DATA_PARAM_CHANGE_SAMPLE_RATE) {
1265 avctx->sample_rate = bytestream_get_le32(&data);
1268 if (flags & AV_SIDE_DATA_PARAM_CHANGE_DIMENSIONS) {
1271 avctx->width = bytestream_get_le32(&data);
1272 avctx->height = bytestream_get_le32(&data);
1273 avcodec_set_dimensions(avctx, avctx->width, avctx->height);
1278 int attribute_align_arg avcodec_decode_video2(AVCodecContext *avctx, AVFrame *picture,
1279 int *got_picture_ptr,
1284 *got_picture_ptr = 0;
1285 if ((avctx->coded_width || avctx->coded_height) && av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx))
1289 apply_param_change(avctx, avpkt);
1291 avcodec_get_frame_defaults(picture);
1293 if ((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size || (avctx->active_thread_type & FF_THREAD_FRAME)) {
1294 if (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME)
1295 ret = ff_thread_decode_frame(avctx, picture, got_picture_ptr,
1298 ret = avctx->codec->decode(avctx, picture, got_picture_ptr,
1300 picture->pkt_dts = avpkt->dts;
1301 /* get_buffer is supposed to set frame parameters */
1302 if (!(avctx->codec->capabilities & CODEC_CAP_DR1)) {
1303 picture->sample_aspect_ratio = avctx->sample_aspect_ratio;
1304 picture->width = avctx->width;
1305 picture->height = avctx->height;
1306 picture->format = avctx->pix_fmt;
1310 emms_c(); //needed to avoid an emms_c() call before every return;
1312 if (*got_picture_ptr)
1313 avctx->frame_number++;
1317 /* many decoders assign whole AVFrames, thus overwriting extended_data;
1318 * make sure it's set correctly */
1319 picture->extended_data = picture->data;
1324 #if FF_API_OLD_DECODE_AUDIO
1325 int attribute_align_arg avcodec_decode_audio3(AVCodecContext *avctx, int16_t *samples,
1326 int *frame_size_ptr,
1329 AVFrame frame = { { 0 } };
1330 int ret, got_frame = 0;
1332 if (avctx->get_buffer != avcodec_default_get_buffer) {
1333 av_log(avctx, AV_LOG_ERROR, "Custom get_buffer() for use with"
1334 "avcodec_decode_audio3() detected. Overriding with avcodec_default_get_buffer\n");
1335 av_log(avctx, AV_LOG_ERROR, "Please port your application to "
1336 "avcodec_decode_audio4()\n");
1337 avctx->get_buffer = avcodec_default_get_buffer;
1340 ret = avcodec_decode_audio4(avctx, &frame, &got_frame, avpkt);
1342 if (ret >= 0 && got_frame) {
1344 int planar = av_sample_fmt_is_planar(avctx->sample_fmt);
1345 int data_size = av_samples_get_buffer_size(&plane_size, avctx->channels,
1347 avctx->sample_fmt, 1);
1348 if (*frame_size_ptr < data_size) {
1349 av_log(avctx, AV_LOG_ERROR, "output buffer size is too small for "
1350 "the current frame (%d < %d)\n", *frame_size_ptr, data_size);
1351 return AVERROR(EINVAL);
1354 memcpy(samples, frame.extended_data[0], plane_size);
1356 if (planar && avctx->channels > 1) {
1357 uint8_t *out = ((uint8_t *)samples) + plane_size;
1358 for (ch = 1; ch < avctx->channels; ch++) {
1359 memcpy(out, frame.extended_data[ch], plane_size);
1363 *frame_size_ptr = data_size;
1365 *frame_size_ptr = 0;
1372 int attribute_align_arg avcodec_decode_audio4(AVCodecContext *avctx,
1377 int planar, channels;
1384 if (!avpkt->data && avpkt->size) {
1385 av_log(avctx, AV_LOG_ERROR, "invalid packet: NULL data, size != 0\n");
1386 return AVERROR(EINVAL);
1389 apply_param_change(avctx, avpkt);
1391 avcodec_get_frame_defaults(frame);
1393 if ((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size) {
1394 ret = avctx->codec->decode(avctx, frame, got_frame_ptr, avpkt);
1395 if (ret >= 0 && *got_frame_ptr) {
1396 avctx->frame_number++;
1397 frame->pkt_dts = avpkt->dts;
1398 if (frame->format == AV_SAMPLE_FMT_NONE)
1399 frame->format = avctx->sample_fmt;
1403 /* many decoders assign whole AVFrames, thus overwriting extended_data;
1404 * make sure it's set correctly; assume decoders that actually use
1405 * extended_data are doing it correctly */
1406 planar = av_sample_fmt_is_planar(frame->format);
1407 channels = av_get_channel_layout_nb_channels(frame->channel_layout);
1408 if (!(planar && channels > AV_NUM_DATA_POINTERS))
1409 frame->extended_data = frame->data;
1414 int avcodec_decode_subtitle2(AVCodecContext *avctx, AVSubtitle *sub,
1422 ret = avctx->codec->decode(avctx, sub, got_sub_ptr, avpkt);
1424 avctx->frame_number++;
1428 void avsubtitle_free(AVSubtitle *sub)
1432 for (i = 0; i < sub->num_rects; i++) {
1433 av_freep(&sub->rects[i]->pict.data[0]);
1434 av_freep(&sub->rects[i]->pict.data[1]);
1435 av_freep(&sub->rects[i]->pict.data[2]);
1436 av_freep(&sub->rects[i]->pict.data[3]);
1437 av_freep(&sub->rects[i]->text);
1438 av_freep(&sub->rects[i]->ass);
1439 av_freep(&sub->rects[i]);
1442 av_freep(&sub->rects);
1444 memset(sub, 0, sizeof(AVSubtitle));
1447 av_cold int avcodec_close(AVCodecContext *avctx)
1449 /* If there is a user-supplied mutex locking routine, call it. */
1450 if (ff_lockmgr_cb) {
1451 if ((*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_OBTAIN))
1455 entangled_thread_counter++;
1456 if (entangled_thread_counter != 1) {
1457 av_log(avctx, AV_LOG_ERROR, "insufficient thread locking around avcodec_open/close()\n");
1458 entangled_thread_counter--;
1462 if (avcodec_is_open(avctx)) {
1463 if (HAVE_THREADS && avctx->thread_opaque)
1464 ff_thread_free(avctx);
1465 if (avctx->codec && avctx->codec->close)
1466 avctx->codec->close(avctx);
1467 avcodec_default_free_buffers(avctx);
1468 avctx->coded_frame = NULL;
1469 av_freep(&avctx->internal);
1472 if (avctx->priv_data && avctx->codec && avctx->codec->priv_class)
1473 av_opt_free(avctx->priv_data);
1475 av_freep(&avctx->priv_data);
1476 if (av_codec_is_encoder(avctx->codec))
1477 av_freep(&avctx->extradata);
1478 avctx->codec = NULL;
1479 avctx->active_thread_type = 0;
1480 entangled_thread_counter--;
1482 /* Release any user-supplied mutex. */
1483 if (ff_lockmgr_cb) {
1484 (*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_RELEASE);
1489 static AVCodec *find_encdec(enum AVCodecID id, int encoder)
1491 AVCodec *p, *experimental = NULL;
1494 if ((encoder ? av_codec_is_encoder(p) : av_codec_is_decoder(p)) &&
1496 if (p->capabilities & CODEC_CAP_EXPERIMENTAL && !experimental) {
1503 return experimental;
1506 AVCodec *avcodec_find_encoder(enum AVCodecID id)
1508 return find_encdec(id, 1);
1511 AVCodec *avcodec_find_encoder_by_name(const char *name)
1518 if (av_codec_is_encoder(p) && strcmp(name, p->name) == 0)
1525 AVCodec *avcodec_find_decoder(enum AVCodecID id)
1527 return find_encdec(id, 0);
1530 AVCodec *avcodec_find_decoder_by_name(const char *name)
1537 if (av_codec_is_decoder(p) && strcmp(name, p->name) == 0)
1544 static int get_bit_rate(AVCodecContext *ctx)
1547 int bits_per_sample;
1549 switch (ctx->codec_type) {
1550 case AVMEDIA_TYPE_VIDEO:
1551 case AVMEDIA_TYPE_DATA:
1552 case AVMEDIA_TYPE_SUBTITLE:
1553 case AVMEDIA_TYPE_ATTACHMENT:
1554 bit_rate = ctx->bit_rate;
1556 case AVMEDIA_TYPE_AUDIO:
1557 bits_per_sample = av_get_bits_per_sample(ctx->codec_id);
1558 bit_rate = bits_per_sample ? ctx->sample_rate * ctx->channels * bits_per_sample : ctx->bit_rate;
1567 size_t av_get_codec_tag_string(char *buf, size_t buf_size, unsigned int codec_tag)
1569 int i, len, ret = 0;
1571 #define TAG_PRINT(x) \
1572 (((x) >= '0' && (x) <= '9') || \
1573 ((x) >= 'a' && (x) <= 'z') || ((x) >= 'A' && (x) <= 'Z') || \
1574 ((x) == '.' || (x) == ' '))
1576 for (i = 0; i < 4; i++) {
1577 len = snprintf(buf, buf_size,
1578 TAG_PRINT(codec_tag & 0xFF) ? "%c" : "[%d]", codec_tag & 0xFF);
1580 buf_size = buf_size > len ? buf_size - len : 0;
1587 void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)
1589 const char *codec_name;
1590 const char *profile = NULL;
1594 AVRational display_aspect_ratio;
1599 p = avcodec_find_encoder(enc->codec_id);
1601 p = avcodec_find_decoder(enc->codec_id);
1604 codec_name = p->name;
1605 profile = av_get_profile_name(p, enc->profile);
1606 } else if (enc->codec_id == AV_CODEC_ID_MPEG2TS) {
1607 /* fake mpeg2 transport stream codec (currently not
1609 codec_name = "mpeg2ts";
1610 } else if (enc->codec_name[0] != '\0') {
1611 codec_name = enc->codec_name;
1613 /* output avi tags */
1615 av_get_codec_tag_string(tag_buf, sizeof(tag_buf), enc->codec_tag);
1616 snprintf(buf1, sizeof(buf1), "%s / 0x%04X", tag_buf, enc->codec_tag);
1620 switch (enc->codec_type) {
1621 case AVMEDIA_TYPE_VIDEO:
1622 snprintf(buf, buf_size,
1624 codec_name, enc->mb_decision ? " (hq)" : "");
1626 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1628 if (enc->pix_fmt != AV_PIX_FMT_NONE) {
1629 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1631 av_get_pix_fmt_name(enc->pix_fmt));
1634 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1636 enc->width, enc->height);
1637 if (enc->sample_aspect_ratio.num) {
1638 av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
1639 enc->width * enc->sample_aspect_ratio.num,
1640 enc->height * enc->sample_aspect_ratio.den,
1642 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1643 " [PAR %d:%d DAR %d:%d]",
1644 enc->sample_aspect_ratio.num, enc->sample_aspect_ratio.den,
1645 display_aspect_ratio.num, display_aspect_ratio.den);
1647 if (av_log_get_level() >= AV_LOG_DEBUG) {
1648 int g = av_gcd(enc->time_base.num, enc->time_base.den);
1649 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1651 enc->time_base.num / g, enc->time_base.den / g);
1655 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1656 ", q=%d-%d", enc->qmin, enc->qmax);
1659 case AVMEDIA_TYPE_AUDIO:
1660 snprintf(buf, buf_size,
1664 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1666 if (enc->sample_rate) {
1667 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1668 ", %d Hz", enc->sample_rate);
1670 av_strlcat(buf, ", ", buf_size);
1671 av_get_channel_layout_string(buf + strlen(buf), buf_size - strlen(buf), enc->channels, enc->channel_layout);
1672 if (enc->sample_fmt != AV_SAMPLE_FMT_NONE) {
1673 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1674 ", %s", av_get_sample_fmt_name(enc->sample_fmt));
1677 case AVMEDIA_TYPE_DATA:
1678 snprintf(buf, buf_size, "Data: %s", codec_name);
1680 case AVMEDIA_TYPE_SUBTITLE:
1681 snprintf(buf, buf_size, "Subtitle: %s", codec_name);
1683 case AVMEDIA_TYPE_ATTACHMENT:
1684 snprintf(buf, buf_size, "Attachment: %s", codec_name);
1687 snprintf(buf, buf_size, "Invalid Codec type %d", enc->codec_type);
1691 if (enc->flags & CODEC_FLAG_PASS1)
1692 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1694 if (enc->flags & CODEC_FLAG_PASS2)
1695 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1698 bitrate = get_bit_rate(enc);
1700 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1701 ", %d kb/s", bitrate / 1000);
1705 const char *av_get_profile_name(const AVCodec *codec, int profile)
1708 if (profile == FF_PROFILE_UNKNOWN || !codec->profiles)
1711 for (p = codec->profiles; p->profile != FF_PROFILE_UNKNOWN; p++)
1712 if (p->profile == profile)
1718 unsigned avcodec_version(void)
1720 return LIBAVCODEC_VERSION_INT;
1723 const char *avcodec_configuration(void)
1725 return LIBAV_CONFIGURATION;
1728 const char *avcodec_license(void)
1730 #define LICENSE_PREFIX "libavcodec license: "
1731 return LICENSE_PREFIX LIBAV_LICENSE + sizeof(LICENSE_PREFIX) - 1;
1734 void avcodec_flush_buffers(AVCodecContext *avctx)
1736 if (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME)
1737 ff_thread_flush(avctx);
1738 else if (avctx->codec->flush)
1739 avctx->codec->flush(avctx);
1742 static void video_free_buffers(AVCodecContext *s)
1744 AVCodecInternal *avci = s->internal;
1750 if (avci->buffer_count)
1751 av_log(s, AV_LOG_WARNING, "Found %i unreleased buffers!\n",
1752 avci->buffer_count);
1753 for (i = 0; i < INTERNAL_BUFFER_SIZE; i++) {
1754 InternalBuffer *buf = &avci->buffer[i];
1755 for (j = 0; j < 4; j++) {
1756 av_freep(&buf->base[j]);
1757 buf->data[j] = NULL;
1760 av_freep(&avci->buffer);
1762 avci->buffer_count = 0;
1765 static void audio_free_buffers(AVCodecContext *avctx)
1767 AVCodecInternal *avci = avctx->internal;
1768 av_freep(&avci->audio_data);
1771 void avcodec_default_free_buffers(AVCodecContext *avctx)
1773 switch (avctx->codec_type) {
1774 case AVMEDIA_TYPE_VIDEO:
1775 video_free_buffers(avctx);
1777 case AVMEDIA_TYPE_AUDIO:
1778 audio_free_buffers(avctx);
1785 int av_get_exact_bits_per_sample(enum AVCodecID codec_id)
1788 case AV_CODEC_ID_ADPCM_CT:
1789 case AV_CODEC_ID_ADPCM_IMA_APC:
1790 case AV_CODEC_ID_ADPCM_IMA_EA_SEAD:
1791 case AV_CODEC_ID_ADPCM_IMA_WS:
1792 case AV_CODEC_ID_ADPCM_G722:
1793 case AV_CODEC_ID_ADPCM_YAMAHA:
1795 case AV_CODEC_ID_PCM_ALAW:
1796 case AV_CODEC_ID_PCM_MULAW:
1797 case AV_CODEC_ID_PCM_S8:
1798 case AV_CODEC_ID_PCM_U8:
1799 case AV_CODEC_ID_PCM_ZORK:
1801 case AV_CODEC_ID_PCM_S16BE:
1802 case AV_CODEC_ID_PCM_S16LE:
1803 case AV_CODEC_ID_PCM_S16LE_PLANAR:
1804 case AV_CODEC_ID_PCM_U16BE:
1805 case AV_CODEC_ID_PCM_U16LE:
1807 case AV_CODEC_ID_PCM_S24DAUD:
1808 case AV_CODEC_ID_PCM_S24BE:
1809 case AV_CODEC_ID_PCM_S24LE:
1810 case AV_CODEC_ID_PCM_U24BE:
1811 case AV_CODEC_ID_PCM_U24LE:
1813 case AV_CODEC_ID_PCM_S32BE:
1814 case AV_CODEC_ID_PCM_S32LE:
1815 case AV_CODEC_ID_PCM_U32BE:
1816 case AV_CODEC_ID_PCM_U32LE:
1817 case AV_CODEC_ID_PCM_F32BE:
1818 case AV_CODEC_ID_PCM_F32LE:
1820 case AV_CODEC_ID_PCM_F64BE:
1821 case AV_CODEC_ID_PCM_F64LE:
1828 int av_get_bits_per_sample(enum AVCodecID codec_id)
1831 case AV_CODEC_ID_ADPCM_SBPRO_2:
1833 case AV_CODEC_ID_ADPCM_SBPRO_3:
1835 case AV_CODEC_ID_ADPCM_SBPRO_4:
1836 case AV_CODEC_ID_ADPCM_IMA_WAV:
1837 case AV_CODEC_ID_ADPCM_IMA_QT:
1838 case AV_CODEC_ID_ADPCM_SWF:
1839 case AV_CODEC_ID_ADPCM_MS:
1842 return av_get_exact_bits_per_sample(codec_id);
1846 int av_get_audio_frame_duration(AVCodecContext *avctx, int frame_bytes)
1848 int id, sr, ch, ba, tag, bps;
1850 id = avctx->codec_id;
1851 sr = avctx->sample_rate;
1852 ch = avctx->channels;
1853 ba = avctx->block_align;
1854 tag = avctx->codec_tag;
1855 bps = av_get_exact_bits_per_sample(avctx->codec_id);
1857 /* codecs with an exact constant bits per sample */
1858 if (bps > 0 && ch > 0 && frame_bytes > 0)
1859 return (frame_bytes * 8) / (bps * ch);
1860 bps = avctx->bits_per_coded_sample;
1862 /* codecs with a fixed packet duration */
1864 case AV_CODEC_ID_ADPCM_ADX: return 32;
1865 case AV_CODEC_ID_ADPCM_IMA_QT: return 64;
1866 case AV_CODEC_ID_ADPCM_EA_XAS: return 128;
1867 case AV_CODEC_ID_AMR_NB:
1868 case AV_CODEC_ID_GSM:
1869 case AV_CODEC_ID_QCELP:
1870 case AV_CODEC_ID_RA_144:
1871 case AV_CODEC_ID_RA_288: return 160;
1872 case AV_CODEC_ID_IMC: return 256;
1873 case AV_CODEC_ID_AMR_WB:
1874 case AV_CODEC_ID_GSM_MS: return 320;
1875 case AV_CODEC_ID_MP1: return 384;
1876 case AV_CODEC_ID_ATRAC1: return 512;
1877 case AV_CODEC_ID_ATRAC3: return 1024;
1878 case AV_CODEC_ID_MP2:
1879 case AV_CODEC_ID_MUSEPACK7: return 1152;
1880 case AV_CODEC_ID_AC3: return 1536;
1884 /* calc from sample rate */
1885 if (id == AV_CODEC_ID_TTA)
1886 return 256 * sr / 245;
1889 /* calc from sample rate and channels */
1890 if (id == AV_CODEC_ID_BINKAUDIO_DCT)
1891 return (480 << (sr / 22050)) / ch;
1896 /* calc from block_align */
1897 if (id == AV_CODEC_ID_SIPR) {
1899 case 20: return 160;
1900 case 19: return 144;
1901 case 29: return 288;
1902 case 37: return 480;
1904 } else if (id == AV_CODEC_ID_ILBC) {
1906 case 38: return 160;
1907 case 50: return 240;
1912 if (frame_bytes > 0) {
1913 /* calc from frame_bytes only */
1914 if (id == AV_CODEC_ID_TRUESPEECH)
1915 return 240 * (frame_bytes / 32);
1916 if (id == AV_CODEC_ID_NELLYMOSER)
1917 return 256 * (frame_bytes / 64);
1920 /* calc from frame_bytes and bits_per_coded_sample */
1921 if (id == AV_CODEC_ID_ADPCM_G726)
1922 return frame_bytes * 8 / bps;
1926 /* calc from frame_bytes and channels */
1928 case AV_CODEC_ID_ADPCM_4XM:
1929 case AV_CODEC_ID_ADPCM_IMA_ISS:
1930 return (frame_bytes - 4 * ch) * 2 / ch;
1931 case AV_CODEC_ID_ADPCM_IMA_SMJPEG:
1932 return (frame_bytes - 4) * 2 / ch;
1933 case AV_CODEC_ID_ADPCM_IMA_AMV:
1934 return (frame_bytes - 8) * 2 / ch;
1935 case AV_CODEC_ID_ADPCM_XA:
1936 return (frame_bytes / 128) * 224 / ch;
1937 case AV_CODEC_ID_INTERPLAY_DPCM:
1938 return (frame_bytes - 6 - ch) / ch;
1939 case AV_CODEC_ID_ROQ_DPCM:
1940 return (frame_bytes - 8) / ch;
1941 case AV_CODEC_ID_XAN_DPCM:
1942 return (frame_bytes - 2 * ch) / ch;
1943 case AV_CODEC_ID_MACE3:
1944 return 3 * frame_bytes / ch;
1945 case AV_CODEC_ID_MACE6:
1946 return 6 * frame_bytes / ch;
1947 case AV_CODEC_ID_PCM_LXF:
1948 return 2 * (frame_bytes / (5 * ch));
1952 /* calc from frame_bytes, channels, and codec_tag */
1953 if (id == AV_CODEC_ID_SOL_DPCM) {
1955 return frame_bytes / ch;
1957 return frame_bytes * 2 / ch;
1962 /* calc from frame_bytes, channels, and block_align */
1963 int blocks = frame_bytes / ba;
1964 switch (avctx->codec_id) {
1965 case AV_CODEC_ID_ADPCM_IMA_WAV:
1966 return blocks * (1 + (ba - 4 * ch) / (4 * ch) * 8);
1967 case AV_CODEC_ID_ADPCM_IMA_DK3:
1968 return blocks * (((ba - 16) * 2 / 3 * 4) / ch);
1969 case AV_CODEC_ID_ADPCM_IMA_DK4:
1970 return blocks * (1 + (ba - 4 * ch) * 2 / ch);
1971 case AV_CODEC_ID_ADPCM_MS:
1972 return blocks * (2 + (ba - 7 * ch) * 2 / ch);
1977 /* calc from frame_bytes, channels, and bits_per_coded_sample */
1978 switch (avctx->codec_id) {
1979 case AV_CODEC_ID_PCM_DVD:
1980 return 2 * (frame_bytes / ((bps * 2 / 8) * ch));
1981 case AV_CODEC_ID_PCM_BLURAY:
1982 return frame_bytes / ((FFALIGN(ch, 2) * bps) / 8);
1983 case AV_CODEC_ID_S302M:
1984 return 2 * (frame_bytes / ((bps + 4) / 4)) / ch;
1994 int ff_thread_init(AVCodecContext *s)
2001 unsigned int av_xiphlacing(unsigned char *s, unsigned int v)
2015 int ff_match_2uint16(const uint16_t(*tab)[2], int size, int a, int b)
2018 for (i = 0; i < size && !(tab[i][0] == a && tab[i][1] == b); i++) ;
2022 void av_log_missing_feature(void *avc, const char *feature, int want_sample)
2024 av_log(avc, AV_LOG_WARNING, "%s is not implemented. Update your Libav "
2025 "version to the newest one from Git. If the problem still "
2026 "occurs, it means that your file has a feature which has not "
2027 "been implemented.\n", feature);
2029 av_log_ask_for_sample(avc, NULL);
2032 void av_log_ask_for_sample(void *avc, const char *msg, ...)
2034 va_list argument_list;
2036 va_start(argument_list, msg);
2039 av_vlog(avc, AV_LOG_WARNING, msg, argument_list);
2040 av_log(avc, AV_LOG_WARNING, "If you want to help, upload a sample "
2041 "of this file to ftp://upload.libav.org/incoming/ "
2042 "and contact the libav-devel mailing list.\n");
2044 va_end(argument_list);
2047 static AVHWAccel *first_hwaccel = NULL;
2049 void av_register_hwaccel(AVHWAccel *hwaccel)
2051 AVHWAccel **p = &first_hwaccel;
2055 hwaccel->next = NULL;
2058 AVHWAccel *av_hwaccel_next(AVHWAccel *hwaccel)
2060 return hwaccel ? hwaccel->next : first_hwaccel;
2063 AVHWAccel *ff_find_hwaccel(enum AVCodecID codec_id, enum AVPixelFormat pix_fmt)
2065 AVHWAccel *hwaccel = NULL;
2067 while ((hwaccel = av_hwaccel_next(hwaccel)))
2068 if (hwaccel->id == codec_id
2069 && hwaccel->pix_fmt == pix_fmt)
2074 int av_lockmgr_register(int (*cb)(void **mutex, enum AVLockOp op))
2076 if (ff_lockmgr_cb) {
2077 if (ff_lockmgr_cb(&codec_mutex, AV_LOCK_DESTROY))
2079 if (ff_lockmgr_cb(&avformat_mutex, AV_LOCK_DESTROY))
2085 if (ff_lockmgr_cb) {
2086 if (ff_lockmgr_cb(&codec_mutex, AV_LOCK_CREATE))
2088 if (ff_lockmgr_cb(&avformat_mutex, AV_LOCK_CREATE))
2094 int avpriv_lock_avformat(void)
2096 if (ff_lockmgr_cb) {
2097 if ((*ff_lockmgr_cb)(&avformat_mutex, AV_LOCK_OBTAIN))
2103 int avpriv_unlock_avformat(void)
2105 if (ff_lockmgr_cb) {
2106 if ((*ff_lockmgr_cb)(&avformat_mutex, AV_LOCK_RELEASE))
2112 unsigned int avpriv_toupper4(unsigned int x)
2114 return av_toupper(x & 0xFF) +
2115 (av_toupper((x >> 8) & 0xFF) << 8) +
2116 (av_toupper((x >> 16) & 0xFF) << 16) +
2117 (av_toupper((x >> 24) & 0xFF) << 24);
2122 int ff_thread_get_buffer(AVCodecContext *avctx, AVFrame *f)
2125 return ff_get_buffer(avctx, f);
2128 void ff_thread_release_buffer(AVCodecContext *avctx, AVFrame *f)
2130 f->owner->release_buffer(f->owner, f);
2133 void ff_thread_finish_setup(AVCodecContext *avctx)
2137 void ff_thread_report_progress(AVFrame *f, int progress, int field)
2141 void ff_thread_await_progress(AVFrame *f, int progress, int field)
2147 enum AVMediaType avcodec_get_type(enum AVCodecID codec_id)
2149 if (codec_id <= AV_CODEC_ID_NONE)
2150 return AVMEDIA_TYPE_UNKNOWN;
2151 else if (codec_id < AV_CODEC_ID_FIRST_AUDIO)
2152 return AVMEDIA_TYPE_VIDEO;
2153 else if (codec_id < AV_CODEC_ID_FIRST_SUBTITLE)
2154 return AVMEDIA_TYPE_AUDIO;
2155 else if (codec_id < AV_CODEC_ID_FIRST_UNKNOWN)
2156 return AVMEDIA_TYPE_SUBTITLE;
2158 return AVMEDIA_TYPE_UNKNOWN;
2161 int avcodec_is_open(AVCodecContext *s)
2163 return !!s->internal;