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
28 #include "libavutil/avassert.h"
29 #include "libavutil/avstring.h"
30 #include "libavutil/crc.h"
31 #include "libavutil/mathematics.h"
32 #include "libavutil/pixdesc.h"
33 #include "libavutil/audioconvert.h"
34 #include "libavutil/imgutils.h"
35 #include "libavutil/samplefmt.h"
36 #include "libavutil/dict.h"
39 #include "libavutil/opt.h"
41 #include "audioconvert.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 void avcodec_align_dimensions2(AVCodecContext *s, int *width, int *height,
161 int linesize_align[AV_NUM_DATA_POINTERS])
167 switch (s->pix_fmt) {
168 case AV_PIX_FMT_YUV420P:
169 case AV_PIX_FMT_YUYV422:
170 case AV_PIX_FMT_UYVY422:
171 case AV_PIX_FMT_YUV422P:
172 case AV_PIX_FMT_YUV440P:
173 case AV_PIX_FMT_YUV444P:
174 case AV_PIX_FMT_GBRP:
175 case AV_PIX_FMT_GRAY8:
176 case AV_PIX_FMT_GRAY16BE:
177 case AV_PIX_FMT_GRAY16LE:
178 case AV_PIX_FMT_YUVJ420P:
179 case AV_PIX_FMT_YUVJ422P:
180 case AV_PIX_FMT_YUVJ440P:
181 case AV_PIX_FMT_YUVJ444P:
182 case AV_PIX_FMT_YUVA420P:
183 case AV_PIX_FMT_YUV420P9LE:
184 case AV_PIX_FMT_YUV420P9BE:
185 case AV_PIX_FMT_YUV420P10LE:
186 case AV_PIX_FMT_YUV420P10BE:
187 case AV_PIX_FMT_YUV422P9LE:
188 case AV_PIX_FMT_YUV422P9BE:
189 case AV_PIX_FMT_YUV422P10LE:
190 case AV_PIX_FMT_YUV422P10BE:
191 case AV_PIX_FMT_YUV444P9LE:
192 case AV_PIX_FMT_YUV444P9BE:
193 case AV_PIX_FMT_YUV444P10LE:
194 case AV_PIX_FMT_YUV444P10BE:
195 case AV_PIX_FMT_GBRP9LE:
196 case AV_PIX_FMT_GBRP9BE:
197 case AV_PIX_FMT_GBRP10LE:
198 case AV_PIX_FMT_GBRP10BE:
199 w_align = 16; //FIXME assume 16 pixel per macroblock
200 h_align = 16 * 2; // interlaced needs 2 macroblocks height
202 case AV_PIX_FMT_YUV411P:
203 case AV_PIX_FMT_UYYVYY411:
207 case AV_PIX_FMT_YUV410P:
208 if (s->codec_id == AV_CODEC_ID_SVQ1) {
212 case AV_PIX_FMT_RGB555:
213 if (s->codec_id == AV_CODEC_ID_RPZA) {
217 case AV_PIX_FMT_PAL8:
218 case AV_PIX_FMT_BGR8:
219 case AV_PIX_FMT_RGB8:
220 if (s->codec_id == AV_CODEC_ID_SMC) {
225 case AV_PIX_FMT_BGR24:
226 if ((s->codec_id == AV_CODEC_ID_MSZH) ||
227 (s->codec_id == AV_CODEC_ID_ZLIB)) {
238 *width = FFALIGN(*width, w_align);
239 *height = FFALIGN(*height, h_align);
240 if (s->codec_id == AV_CODEC_ID_H264)
241 // some of the optimized chroma MC reads one line too much
244 for (i = 0; i < 4; i++)
245 linesize_align[i] = STRIDE_ALIGN;
248 void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height)
250 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(s->pix_fmt);
251 int chroma_shift = desc->log2_chroma_w;
252 int linesize_align[AV_NUM_DATA_POINTERS];
255 avcodec_align_dimensions2(s, width, height, linesize_align);
256 align = FFMAX(linesize_align[0], linesize_align[3]);
257 linesize_align[1] <<= chroma_shift;
258 linesize_align[2] <<= chroma_shift;
259 align = FFMAX3(align, linesize_align[1], linesize_align[2]);
260 *width = FFALIGN(*width, align);
263 int avcodec_fill_audio_frame(AVFrame *frame, int nb_channels,
264 enum AVSampleFormat sample_fmt, const uint8_t *buf,
265 int buf_size, int align)
267 int ch, planar, needed_size, ret = 0;
269 needed_size = av_samples_get_buffer_size(NULL, nb_channels,
270 frame->nb_samples, sample_fmt,
272 if (buf_size < needed_size)
273 return AVERROR(EINVAL);
275 planar = av_sample_fmt_is_planar(sample_fmt);
276 if (planar && nb_channels > AV_NUM_DATA_POINTERS) {
277 if (!(frame->extended_data = av_mallocz(nb_channels *
278 sizeof(*frame->extended_data))))
279 return AVERROR(ENOMEM);
281 frame->extended_data = frame->data;
284 if ((ret = av_samples_fill_arrays(frame->extended_data, &frame->linesize[0],
285 buf, nb_channels, frame->nb_samples,
286 sample_fmt, align)) < 0) {
287 if (frame->extended_data != frame->data)
288 av_free(frame->extended_data);
291 if (frame->extended_data != frame->data) {
292 for (ch = 0; ch < AV_NUM_DATA_POINTERS; ch++)
293 frame->data[ch] = frame->extended_data[ch];
299 static int audio_get_buffer(AVCodecContext *avctx, AVFrame *frame)
301 AVCodecInternal *avci = avctx->internal;
305 buf_size = av_samples_get_buffer_size(NULL, avctx->channels,
306 frame->nb_samples, avctx->sample_fmt,
309 return AVERROR(EINVAL);
311 /* allocate InternalBuffer if needed */
313 avci->buffer = av_mallocz(sizeof(InternalBuffer));
315 return AVERROR(ENOMEM);
319 /* if there is a previously-used internal buffer, check its size and
320 * channel count to see if we can reuse it */
321 if (buf->extended_data) {
322 /* if current buffer is too small, free it */
323 if (buf->extended_data[0] && buf_size > buf->audio_data_size) {
324 av_free(buf->extended_data[0]);
325 if (buf->extended_data != buf->data)
326 av_free(buf->extended_data);
327 buf->extended_data = NULL;
330 /* if number of channels has changed, reset and/or free extended data
331 * pointers but leave data buffer in buf->data[0] for reuse */
332 if (buf->nb_channels != avctx->channels) {
333 if (buf->extended_data != buf->data)
334 av_free(buf->extended_data);
335 buf->extended_data = NULL;
339 /* if there is no previous buffer or the previous buffer cannot be used
340 * as-is, allocate a new buffer and/or rearrange the channel pointers */
341 if (!buf->extended_data) {
343 if (!(buf->data[0] = av_mallocz(buf_size)))
344 return AVERROR(ENOMEM);
345 buf->audio_data_size = buf_size;
347 if ((ret = avcodec_fill_audio_frame(frame, avctx->channels,
348 avctx->sample_fmt, buf->data[0],
349 buf->audio_data_size, 0)))
352 if (frame->extended_data == frame->data)
353 buf->extended_data = buf->data;
355 buf->extended_data = frame->extended_data;
356 memcpy(buf->data, frame->data, sizeof(frame->data));
357 buf->linesize[0] = frame->linesize[0];
358 buf->nb_channels = avctx->channels;
360 /* copy InternalBuffer info to the AVFrame */
361 frame->extended_data = buf->extended_data;
362 frame->linesize[0] = buf->linesize[0];
363 memcpy(frame->data, buf->data, sizeof(frame->data));
366 frame->type = FF_BUFFER_TYPE_INTERNAL;
369 frame->pkt_pts = avctx->pkt->pts;
371 frame->pkt_pts = AV_NOPTS_VALUE;
372 frame->reordered_opaque = avctx->reordered_opaque;
374 frame->sample_rate = avctx->sample_rate;
375 frame->format = avctx->sample_fmt;
376 frame->channel_layout = avctx->channel_layout;
378 if (avctx->debug & FF_DEBUG_BUFFERS)
379 av_log(avctx, AV_LOG_DEBUG, "default_get_buffer called on frame %p, "
380 "internal audio buffer used\n", frame);
385 static int video_get_buffer(AVCodecContext *s, AVFrame *pic)
391 AVCodecInternal *avci = s->internal;
393 if (pic->data[0] != NULL) {
394 av_log(s, AV_LOG_ERROR, "pic->data[0]!=NULL in avcodec_default_get_buffer\n");
397 if (avci->buffer_count >= INTERNAL_BUFFER_SIZE) {
398 av_log(s, AV_LOG_ERROR, "buffer_count overflow (missing release_buffer?)\n");
402 if (av_image_check_size(w, h, 0, s))
406 avci->buffer = av_mallocz((INTERNAL_BUFFER_SIZE + 1) *
407 sizeof(InternalBuffer));
410 buf = &avci->buffer[avci->buffer_count];
412 if (buf->base[0] && (buf->width != w || buf->height != h || buf->pix_fmt != s->pix_fmt)) {
413 for (i = 0; i < AV_NUM_DATA_POINTERS; i++) {
414 av_freep(&buf->base[i]);
420 int h_chroma_shift, v_chroma_shift;
425 int stride_align[AV_NUM_DATA_POINTERS];
426 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(s->pix_fmt);
427 const int pixel_size = desc->comp[0].step_minus1 + 1;
429 avcodec_get_chroma_sub_sample(s->pix_fmt, &h_chroma_shift, &v_chroma_shift);
431 avcodec_align_dimensions2(s, &w, &h, stride_align);
433 if (!(s->flags & CODEC_FLAG_EMU_EDGE)) {
439 // NOTE: do not align linesizes individually, this breaks e.g. assumptions
440 // that linesize[0] == 2*linesize[1] in the MPEG-encoder for 4:2:2
441 av_image_fill_linesizes(picture.linesize, s->pix_fmt, w);
442 // increase alignment of w for next try (rhs gives the lowest bit set in w)
446 for (i = 0; i < 4; i++)
447 unaligned |= picture.linesize[i] % stride_align[i];
450 tmpsize = av_image_fill_pointers(picture.data, s->pix_fmt, h, NULL, picture.linesize);
454 for (i = 0; i < 3 && picture.data[i + 1]; i++)
455 size[i] = picture.data[i + 1] - picture.data[i];
456 size[i] = tmpsize - (picture.data[i] - picture.data[0]);
458 memset(buf->base, 0, sizeof(buf->base));
459 memset(buf->data, 0, sizeof(buf->data));
461 for (i = 0; i < 4 && size[i]; i++) {
462 const int h_shift = i == 0 ? 0 : h_chroma_shift;
463 const int v_shift = i == 0 ? 0 : v_chroma_shift;
465 buf->linesize[i] = picture.linesize[i];
467 buf->base[i] = av_malloc(size[i] + 16); //FIXME 16
468 if (buf->base[i] == NULL)
470 memset(buf->base[i], 128, size[i]);
472 // no edge if EDGE EMU or not planar YUV
473 if ((s->flags & CODEC_FLAG_EMU_EDGE) || !size[2])
474 buf->data[i] = buf->base[i];
476 buf->data[i] = buf->base[i] + FFALIGN((buf->linesize[i] * EDGE_WIDTH >> v_shift) + (pixel_size * EDGE_WIDTH >> h_shift), stride_align[i]);
478 for (; i < AV_NUM_DATA_POINTERS; i++) {
479 buf->base[i] = buf->data[i] = NULL;
480 buf->linesize[i] = 0;
482 if (size[1] && !size[2])
483 ff_set_systematic_pal2((uint32_t *)buf->data[1], s->pix_fmt);
484 buf->width = s->width;
485 buf->height = s->height;
486 buf->pix_fmt = s->pix_fmt;
488 pic->type = FF_BUFFER_TYPE_INTERNAL;
490 for (i = 0; i < AV_NUM_DATA_POINTERS; i++) {
491 pic->base[i] = buf->base[i];
492 pic->data[i] = buf->data[i];
493 pic->linesize[i] = buf->linesize[i];
495 pic->extended_data = pic->data;
496 avci->buffer_count++;
497 pic->width = buf->width;
498 pic->height = buf->height;
499 pic->format = buf->pix_fmt;
500 pic->sample_aspect_ratio = s->sample_aspect_ratio;
503 pic->pkt_pts = s->pkt->pts;
505 pic->pkt_pts = AV_NOPTS_VALUE;
506 pic->reordered_opaque = s->reordered_opaque;
508 if (s->debug & FF_DEBUG_BUFFERS)
509 av_log(s, AV_LOG_DEBUG, "default_get_buffer called on pic %p, %d "
510 "buffers used\n", pic, avci->buffer_count);
515 int avcodec_default_get_buffer(AVCodecContext *avctx, AVFrame *frame)
517 switch (avctx->codec_type) {
518 case AVMEDIA_TYPE_VIDEO:
519 return video_get_buffer(avctx, frame);
520 case AVMEDIA_TYPE_AUDIO:
521 return audio_get_buffer(avctx, frame);
527 void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic)
530 InternalBuffer *buf, *last;
531 AVCodecInternal *avci = s->internal;
533 assert(s->codec_type == AVMEDIA_TYPE_VIDEO);
535 assert(pic->type == FF_BUFFER_TYPE_INTERNAL);
536 assert(avci->buffer_count);
539 buf = NULL; /* avoids warning */
540 for (i = 0; i < avci->buffer_count; i++) { //just 3-5 checks so is not worth to optimize
541 buf = &avci->buffer[i];
542 if (buf->data[0] == pic->data[0])
545 assert(i < avci->buffer_count);
546 avci->buffer_count--;
547 last = &avci->buffer[avci->buffer_count];
550 FFSWAP(InternalBuffer, *buf, *last);
553 for (i = 0; i < AV_NUM_DATA_POINTERS; i++)
555 // pic->base[i]=NULL;
557 if (s->debug & FF_DEBUG_BUFFERS)
558 av_log(s, AV_LOG_DEBUG, "default_release_buffer called on pic %p, %d "
559 "buffers used\n", pic, avci->buffer_count);
562 int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic)
567 assert(s->codec_type == AVMEDIA_TYPE_VIDEO);
569 /* If no picture return a new buffer */
570 if (pic->data[0] == NULL) {
571 /* We will copy from buffer, so must be readable */
572 pic->buffer_hints |= FF_BUFFER_HINTS_READABLE;
573 return s->get_buffer(s, pic);
576 assert(s->pix_fmt == pic->format);
578 /* If internal buffer type return the same buffer */
579 if (pic->type == FF_BUFFER_TYPE_INTERNAL) {
581 pic->pkt_pts = s->pkt->pts;
583 pic->pkt_pts = AV_NOPTS_VALUE;
584 pic->reordered_opaque = s->reordered_opaque;
589 * Not internal type and reget_buffer not overridden, emulate cr buffer
592 for (i = 0; i < AV_NUM_DATA_POINTERS; i++)
593 pic->data[i] = pic->base[i] = NULL;
595 /* Allocate new frame */
596 if (s->get_buffer(s, pic))
598 /* Copy image data from old buffer to new buffer */
599 av_picture_copy((AVPicture *)pic, (AVPicture *)&temp_pic, s->pix_fmt, s->width,
601 s->release_buffer(s, &temp_pic); // Release old frame
605 int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2), void *arg, int *ret, int count, int size)
609 for (i = 0; i < count; i++) {
610 int r = func(c, (char *)arg + i * size);
617 int avcodec_default_execute2(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2, int jobnr, int threadnr), void *arg, int *ret, int count)
621 for (i = 0; i < count; i++) {
622 int r = func(c, arg, i, 0);
629 enum AVPixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum AVPixelFormat *fmt)
631 while (*fmt != AV_PIX_FMT_NONE && ff_is_hwaccel_pix_fmt(*fmt))
636 void avcodec_get_frame_defaults(AVFrame *frame)
638 if (frame->extended_data != frame->data)
639 av_freep(&frame->extended_data);
641 memset(frame, 0, sizeof(AVFrame));
643 frame->pts = AV_NOPTS_VALUE;
644 frame->key_frame = 1;
645 frame->sample_aspect_ratio = (AVRational) {0, 1 };
646 frame->format = -1; /* unknown */
647 frame->extended_data = frame->data;
650 AVFrame *avcodec_alloc_frame(void)
652 AVFrame *frame = av_mallocz(sizeof(AVFrame));
657 avcodec_get_frame_defaults(frame);
662 void avcodec_free_frame(AVFrame **frame)
666 if (!frame || !*frame)
671 if (f->extended_data != f->data)
672 av_freep(&f->extended_data);
677 int attribute_align_arg avcodec_open2(AVCodecContext *avctx, const AVCodec *codec, AVDictionary **options)
680 AVDictionary *tmp = NULL;
682 if (avcodec_is_open(avctx))
685 if ((!codec && !avctx->codec)) {
686 av_log(avctx, AV_LOG_ERROR, "No codec provided to avcodec_open2().\n");
687 return AVERROR(EINVAL);
689 if ((codec && avctx->codec && codec != avctx->codec)) {
690 av_log(avctx, AV_LOG_ERROR, "This AVCodecContext was allocated for %s, "
691 "but %s passed to avcodec_open2().\n", avctx->codec->name, codec->name);
692 return AVERROR(EINVAL);
695 codec = avctx->codec;
697 if (avctx->extradata_size < 0 || avctx->extradata_size >= FF_MAX_EXTRADATA_SIZE)
698 return AVERROR(EINVAL);
701 av_dict_copy(&tmp, *options, 0);
703 /* If there is a user-supplied mutex locking routine, call it. */
705 if ((*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_OBTAIN))
709 entangled_thread_counter++;
710 if (entangled_thread_counter != 1) {
711 av_log(avctx, AV_LOG_ERROR, "insufficient thread locking around avcodec_open/close()\n");
716 avctx->internal = av_mallocz(sizeof(AVCodecInternal));
717 if (!avctx->internal) {
718 ret = AVERROR(ENOMEM);
722 if (codec->priv_data_size > 0) {
723 if (!avctx->priv_data) {
724 avctx->priv_data = av_mallocz(codec->priv_data_size);
725 if (!avctx->priv_data) {
726 ret = AVERROR(ENOMEM);
729 if (codec->priv_class) {
730 *(const AVClass **)avctx->priv_data = codec->priv_class;
731 av_opt_set_defaults(avctx->priv_data);
734 if (codec->priv_class && (ret = av_opt_set_dict(avctx->priv_data, &tmp)) < 0)
737 avctx->priv_data = NULL;
739 if ((ret = av_opt_set_dict(avctx, &tmp)) < 0)
742 if (avctx->coded_width && avctx->coded_height)
743 avcodec_set_dimensions(avctx, avctx->coded_width, avctx->coded_height);
744 else if (avctx->width && avctx->height)
745 avcodec_set_dimensions(avctx, avctx->width, avctx->height);
747 if ((avctx->coded_width || avctx->coded_height || avctx->width || avctx->height)
748 && ( av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx) < 0
749 || av_image_check_size(avctx->width, avctx->height, 0, avctx) < 0)) {
750 av_log(avctx, AV_LOG_WARNING, "ignoring invalid width/height values\n");
751 avcodec_set_dimensions(avctx, 0, 0);
754 /* if the decoder init function was already called previously,
755 * free the already allocated subtitle_header before overwriting it */
756 if (av_codec_is_decoder(codec))
757 av_freep(&avctx->subtitle_header);
759 #define SANE_NB_CHANNELS 128U
760 if (avctx->channels > SANE_NB_CHANNELS) {
761 ret = AVERROR(EINVAL);
765 avctx->codec = codec;
766 if ((avctx->codec_type == AVMEDIA_TYPE_UNKNOWN || avctx->codec_type == codec->type) &&
767 avctx->codec_id == AV_CODEC_ID_NONE) {
768 avctx->codec_type = codec->type;
769 avctx->codec_id = codec->id;
771 if (avctx->codec_id != codec->id || (avctx->codec_type != codec->type
772 && avctx->codec_type != AVMEDIA_TYPE_ATTACHMENT)) {
773 av_log(avctx, AV_LOG_ERROR, "codec type or id mismatches\n");
774 ret = AVERROR(EINVAL);
777 avctx->frame_number = 0;
779 if (avctx->codec_type == AVMEDIA_TYPE_AUDIO &&
780 (!avctx->time_base.num || !avctx->time_base.den)) {
781 avctx->time_base.num = 1;
782 avctx->time_base.den = avctx->sample_rate;
785 if (HAVE_THREADS && !avctx->thread_opaque) {
786 ret = ff_thread_init(avctx);
791 if (!HAVE_THREADS && !(codec->capabilities & CODEC_CAP_AUTO_THREADS))
792 avctx->thread_count = 1;
794 if (av_codec_is_encoder(avctx->codec)) {
796 if (avctx->codec->sample_fmts) {
797 for (i = 0; avctx->codec->sample_fmts[i] != AV_SAMPLE_FMT_NONE; i++) {
798 if (avctx->sample_fmt == avctx->codec->sample_fmts[i])
800 if (avctx->channels == 1 &&
801 av_get_planar_sample_fmt(avctx->sample_fmt) ==
802 av_get_planar_sample_fmt(avctx->codec->sample_fmts[i])) {
803 avctx->sample_fmt = avctx->codec->sample_fmts[i];
807 if (avctx->codec->sample_fmts[i] == AV_SAMPLE_FMT_NONE) {
808 av_log(avctx, AV_LOG_ERROR, "Specified sample_fmt is not supported.\n");
809 ret = AVERROR(EINVAL);
813 if (avctx->codec->pix_fmts) {
814 for (i = 0; avctx->codec->pix_fmts[i] != AV_PIX_FMT_NONE; i++)
815 if (avctx->pix_fmt == avctx->codec->pix_fmts[i])
817 if (avctx->codec->pix_fmts[i] == AV_PIX_FMT_NONE) {
818 av_log(avctx, AV_LOG_ERROR, "Specified pix_fmt is not supported\n");
819 ret = AVERROR(EINVAL);
823 if (avctx->codec->supported_samplerates) {
824 for (i = 0; avctx->codec->supported_samplerates[i] != 0; i++)
825 if (avctx->sample_rate == avctx->codec->supported_samplerates[i])
827 if (avctx->codec->supported_samplerates[i] == 0) {
828 av_log(avctx, AV_LOG_ERROR, "Specified sample_rate is not supported\n");
829 ret = AVERROR(EINVAL);
833 if (avctx->codec->channel_layouts) {
834 if (!avctx->channel_layout) {
835 av_log(avctx, AV_LOG_WARNING, "channel_layout not specified\n");
837 for (i = 0; avctx->codec->channel_layouts[i] != 0; i++)
838 if (avctx->channel_layout == avctx->codec->channel_layouts[i])
840 if (avctx->codec->channel_layouts[i] == 0) {
841 av_log(avctx, AV_LOG_ERROR, "Specified channel_layout is not supported\n");
842 ret = AVERROR(EINVAL);
847 if (avctx->channel_layout && avctx->channels) {
848 if (av_get_channel_layout_nb_channels(avctx->channel_layout) != avctx->channels) {
849 av_log(avctx, AV_LOG_ERROR, "channel layout does not match number of channels\n");
850 ret = AVERROR(EINVAL);
853 } else if (avctx->channel_layout) {
854 avctx->channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
858 if (avctx->codec->init && !(avctx->active_thread_type & FF_THREAD_FRAME)) {
859 ret = avctx->codec->init(avctx);
865 if (av_codec_is_decoder(avctx->codec)) {
866 /* validate channel layout from the decoder */
867 if (avctx->channel_layout) {
868 int channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
869 if (!avctx->channels)
870 avctx->channels = channels;
871 else if (channels != avctx->channels) {
872 av_log(avctx, AV_LOG_WARNING,
873 "channel layout does not match number of channels\n");
874 avctx->channel_layout = 0;
879 entangled_thread_counter--;
881 /* Release any user-supplied mutex. */
883 (*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_RELEASE);
886 av_dict_free(options);
893 av_freep(&avctx->priv_data);
894 av_freep(&avctx->internal);
899 int ff_alloc_packet(AVPacket *avpkt, int size)
901 if (size > INT_MAX - FF_INPUT_BUFFER_PADDING_SIZE)
902 return AVERROR(EINVAL);
905 void *destruct = avpkt->destruct;
907 if (avpkt->size < size)
908 return AVERROR(EINVAL);
910 av_init_packet(avpkt);
911 avpkt->destruct = destruct;
915 return av_new_packet(avpkt, size);
920 * Pad last frame with silence.
922 static int pad_last_frame(AVCodecContext *s, AVFrame **dst, const AVFrame *src)
924 AVFrame *frame = NULL;
928 if (!(frame = avcodec_alloc_frame()))
929 return AVERROR(ENOMEM);
932 if ((ret = av_samples_get_buffer_size(&frame->linesize[0], s->channels,
933 s->frame_size, s->sample_fmt, 0)) < 0)
936 if (!(buf = av_malloc(ret))) {
937 ret = AVERROR(ENOMEM);
941 frame->nb_samples = s->frame_size;
942 if ((ret = avcodec_fill_audio_frame(frame, s->channels, s->sample_fmt,
945 if ((ret = av_samples_copy(frame->extended_data, src->extended_data, 0, 0,
946 src->nb_samples, s->channels, s->sample_fmt)) < 0)
948 if ((ret = av_samples_set_silence(frame->extended_data, src->nb_samples,
949 frame->nb_samples - src->nb_samples,
950 s->channels, s->sample_fmt)) < 0)
958 if (frame->extended_data != frame->data)
959 av_freep(&frame->extended_data);
965 int attribute_align_arg avcodec_encode_audio2(AVCodecContext *avctx,
967 const AVFrame *frame,
971 AVFrame *padded_frame = NULL;
973 int user_packet = !!avpkt->data;
977 if (!(avctx->codec->capabilities & CODEC_CAP_DELAY) && !frame) {
978 av_free_packet(avpkt);
979 av_init_packet(avpkt);
983 /* ensure that extended_data is properly set */
984 if (frame && !frame->extended_data) {
985 if (av_sample_fmt_is_planar(avctx->sample_fmt) &&
986 avctx->channels > AV_NUM_DATA_POINTERS) {
987 av_log(avctx, AV_LOG_ERROR, "Encoding to a planar sample format, "
988 "with more than %d channels, but extended_data is not set.\n",
989 AV_NUM_DATA_POINTERS);
990 return AVERROR(EINVAL);
992 av_log(avctx, AV_LOG_WARNING, "extended_data is not set.\n");
995 tmp.extended_data = tmp.data;
999 /* check for valid frame size */
1001 if (avctx->codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME) {
1002 if (frame->nb_samples > avctx->frame_size)
1003 return AVERROR(EINVAL);
1004 } else if (!(avctx->codec->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE)) {
1005 if (frame->nb_samples < avctx->frame_size &&
1006 !avctx->internal->last_audio_frame) {
1007 ret = pad_last_frame(avctx, &padded_frame, frame);
1011 frame = padded_frame;
1012 avctx->internal->last_audio_frame = 1;
1015 if (frame->nb_samples != avctx->frame_size) {
1016 ret = AVERROR(EINVAL);
1022 ret = avctx->codec->encode2(avctx, avpkt, frame, got_packet_ptr);
1024 if (*got_packet_ptr) {
1025 if (!(avctx->codec->capabilities & CODEC_CAP_DELAY)) {
1026 if (avpkt->pts == AV_NOPTS_VALUE)
1027 avpkt->pts = frame->pts;
1028 if (!avpkt->duration)
1029 avpkt->duration = ff_samples_to_time_base(avctx,
1032 avpkt->dts = avpkt->pts;
1037 if (!user_packet && avpkt->size) {
1038 uint8_t *new_data = av_realloc(avpkt->data, avpkt->size);
1040 avpkt->data = new_data;
1043 avctx->frame_number++;
1046 if (ret < 0 || !*got_packet_ptr) {
1047 av_free_packet(avpkt);
1048 av_init_packet(avpkt);
1052 /* NOTE: if we add any audio encoders which output non-keyframe packets,
1053 * this needs to be moved to the encoders, but for now we can do it
1054 * here to simplify things */
1055 avpkt->flags |= AV_PKT_FLAG_KEY;
1059 av_freep(&padded_frame->data[0]);
1060 if (padded_frame->extended_data != padded_frame->data)
1061 av_freep(&padded_frame->extended_data);
1062 av_freep(&padded_frame);
1068 #if FF_API_OLD_DECODE_AUDIO
1069 int attribute_align_arg avcodec_encode_audio(AVCodecContext *avctx,
1070 uint8_t *buf, int buf_size,
1071 const short *samples)
1076 int ret, samples_size, got_packet;
1078 av_init_packet(&pkt);
1080 pkt.size = buf_size;
1084 avcodec_get_frame_defaults(frame);
1086 if (avctx->frame_size) {
1087 frame->nb_samples = avctx->frame_size;
1089 /* if frame_size is not set, the number of samples must be
1090 * calculated from the buffer size */
1092 if (!av_get_bits_per_sample(avctx->codec_id)) {
1093 av_log(avctx, AV_LOG_ERROR, "avcodec_encode_audio() does not "
1094 "support this codec\n");
1095 return AVERROR(EINVAL);
1097 nb_samples = (int64_t)buf_size * 8 /
1098 (av_get_bits_per_sample(avctx->codec_id) *
1100 if (nb_samples >= INT_MAX)
1101 return AVERROR(EINVAL);
1102 frame->nb_samples = nb_samples;
1105 /* it is assumed that the samples buffer is large enough based on the
1106 * relevant parameters */
1107 samples_size = av_samples_get_buffer_size(NULL, avctx->channels,
1109 avctx->sample_fmt, 1);
1110 if ((ret = avcodec_fill_audio_frame(frame, avctx->channels,
1112 (const uint8_t *)samples,
1116 /* fabricate frame pts from sample count.
1117 * this is needed because the avcodec_encode_audio() API does not have
1118 * a way for the user to provide pts */
1119 frame->pts = ff_samples_to_time_base(avctx,
1120 avctx->internal->sample_count);
1121 avctx->internal->sample_count += frame->nb_samples;
1127 ret = avcodec_encode_audio2(avctx, &pkt, frame, &got_packet);
1128 if (!ret && got_packet && avctx->coded_frame) {
1129 avctx->coded_frame->pts = pkt.pts;
1130 avctx->coded_frame->key_frame = !!(pkt.flags & AV_PKT_FLAG_KEY);
1132 /* free any side data since we cannot return it */
1133 if (pkt.side_data_elems > 0) {
1135 for (i = 0; i < pkt.side_data_elems; i++)
1136 av_free(pkt.side_data[i].data);
1137 av_freep(&pkt.side_data);
1138 pkt.side_data_elems = 0;
1141 if (frame && frame->extended_data != frame->data)
1142 av_free(frame->extended_data);
1144 return ret ? ret : pkt.size;
1149 #if FF_API_OLD_ENCODE_VIDEO
1150 int attribute_align_arg avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
1151 const AVFrame *pict)
1154 int ret, got_packet = 0;
1156 if (buf_size < FF_MIN_BUFFER_SIZE) {
1157 av_log(avctx, AV_LOG_ERROR, "buffer smaller than minimum size\n");
1161 av_init_packet(&pkt);
1163 pkt.size = buf_size;
1165 ret = avcodec_encode_video2(avctx, &pkt, pict, &got_packet);
1166 if (!ret && got_packet && avctx->coded_frame) {
1167 avctx->coded_frame->pts = pkt.pts;
1168 avctx->coded_frame->key_frame = !!(pkt.flags & AV_PKT_FLAG_KEY);
1171 /* free any side data since we cannot return it */
1172 if (pkt.side_data_elems > 0) {
1174 for (i = 0; i < pkt.side_data_elems; i++)
1175 av_free(pkt.side_data[i].data);
1176 av_freep(&pkt.side_data);
1177 pkt.side_data_elems = 0;
1180 return ret ? ret : pkt.size;
1185 int attribute_align_arg avcodec_encode_video2(AVCodecContext *avctx,
1187 const AVFrame *frame,
1188 int *got_packet_ptr)
1191 int user_packet = !!avpkt->data;
1193 *got_packet_ptr = 0;
1195 if (!(avctx->codec->capabilities & CODEC_CAP_DELAY) && !frame) {
1196 av_free_packet(avpkt);
1197 av_init_packet(avpkt);
1202 if (av_image_check_size(avctx->width, avctx->height, 0, avctx))
1203 return AVERROR(EINVAL);
1205 av_assert0(avctx->codec->encode2);
1207 ret = avctx->codec->encode2(avctx, avpkt, frame, got_packet_ptr);
1209 if (!*got_packet_ptr)
1211 else if (!(avctx->codec->capabilities & CODEC_CAP_DELAY))
1212 avpkt->pts = avpkt->dts = frame->pts;
1214 if (!user_packet && avpkt->size) {
1215 uint8_t *new_data = av_realloc(avpkt->data, avpkt->size);
1217 avpkt->data = new_data;
1220 avctx->frame_number++;
1223 if (ret < 0 || !*got_packet_ptr)
1224 av_free_packet(avpkt);
1230 int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size,
1231 const AVSubtitle *sub)
1234 if (sub->start_display_time) {
1235 av_log(avctx, AV_LOG_ERROR, "start_display_time must be 0.\n");
1238 if (sub->num_rects == 0 || !sub->rects)
1240 ret = avctx->codec->encode_sub(avctx, buf, buf_size, sub);
1241 avctx->frame_number++;
1245 static void apply_param_change(AVCodecContext *avctx, AVPacket *avpkt)
1248 const uint8_t *data;
1251 if (!(avctx->codec->capabilities & CODEC_CAP_PARAM_CHANGE))
1254 data = av_packet_get_side_data(avpkt, AV_PKT_DATA_PARAM_CHANGE, &size);
1255 if (!data || size < 4)
1257 flags = bytestream_get_le32(&data);
1259 if (size < 4) /* Required for any of the changes */
1261 if (flags & AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_COUNT) {
1262 avctx->channels = bytestream_get_le32(&data);
1265 if (flags & AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_LAYOUT) {
1268 avctx->channel_layout = bytestream_get_le64(&data);
1273 if (flags & AV_SIDE_DATA_PARAM_CHANGE_SAMPLE_RATE) {
1274 avctx->sample_rate = bytestream_get_le32(&data);
1277 if (flags & AV_SIDE_DATA_PARAM_CHANGE_DIMENSIONS) {
1280 avctx->width = bytestream_get_le32(&data);
1281 avctx->height = bytestream_get_le32(&data);
1282 avcodec_set_dimensions(avctx, avctx->width, avctx->height);
1287 int attribute_align_arg avcodec_decode_video2(AVCodecContext *avctx, AVFrame *picture,
1288 int *got_picture_ptr,
1293 *got_picture_ptr = 0;
1294 if ((avctx->coded_width || avctx->coded_height) && av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx))
1298 apply_param_change(avctx, avpkt);
1300 if ((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size || (avctx->active_thread_type & FF_THREAD_FRAME)) {
1301 if (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME)
1302 ret = ff_thread_decode_frame(avctx, picture, got_picture_ptr,
1305 ret = avctx->codec->decode(avctx, picture, got_picture_ptr,
1307 picture->pkt_dts = avpkt->dts;
1308 picture->sample_aspect_ratio = avctx->sample_aspect_ratio;
1309 picture->width = avctx->width;
1310 picture->height = avctx->height;
1311 picture->format = avctx->pix_fmt;
1314 emms_c(); //needed to avoid an emms_c() call before every return;
1316 if (*got_picture_ptr)
1317 avctx->frame_number++;
1321 /* many decoders assign whole AVFrames, thus overwriting extended_data;
1322 * make sure it's set correctly */
1323 picture->extended_data = picture->data;
1328 #if FF_API_OLD_DECODE_AUDIO
1329 int attribute_align_arg avcodec_decode_audio3(AVCodecContext *avctx, int16_t *samples,
1330 int *frame_size_ptr,
1334 int ret, got_frame = 0;
1336 if (avctx->get_buffer != avcodec_default_get_buffer) {
1337 av_log(avctx, AV_LOG_ERROR, "Custom get_buffer() for use with"
1338 "avcodec_decode_audio3() detected. Overriding with avcodec_default_get_buffer\n");
1339 av_log(avctx, AV_LOG_ERROR, "Please port your application to "
1340 "avcodec_decode_audio4()\n");
1341 avctx->get_buffer = avcodec_default_get_buffer;
1344 ret = avcodec_decode_audio4(avctx, &frame, &got_frame, avpkt);
1346 if (ret >= 0 && got_frame) {
1348 int planar = av_sample_fmt_is_planar(avctx->sample_fmt);
1349 int data_size = av_samples_get_buffer_size(&plane_size, avctx->channels,
1351 avctx->sample_fmt, 1);
1352 if (*frame_size_ptr < data_size) {
1353 av_log(avctx, AV_LOG_ERROR, "output buffer size is too small for "
1354 "the current frame (%d < %d)\n", *frame_size_ptr, data_size);
1355 return AVERROR(EINVAL);
1358 memcpy(samples, frame.extended_data[0], plane_size);
1360 if (planar && avctx->channels > 1) {
1361 uint8_t *out = ((uint8_t *)samples) + plane_size;
1362 for (ch = 1; ch < avctx->channels; ch++) {
1363 memcpy(out, frame.extended_data[ch], plane_size);
1367 *frame_size_ptr = data_size;
1369 *frame_size_ptr = 0;
1376 int attribute_align_arg avcodec_decode_audio4(AVCodecContext *avctx,
1381 int planar, channels;
1388 if (!avpkt->data && avpkt->size) {
1389 av_log(avctx, AV_LOG_ERROR, "invalid packet: NULL data, size != 0\n");
1390 return AVERROR(EINVAL);
1393 apply_param_change(avctx, avpkt);
1395 if ((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size) {
1396 ret = avctx->codec->decode(avctx, frame, got_frame_ptr, avpkt);
1397 if (ret >= 0 && *got_frame_ptr) {
1398 avctx->frame_number++;
1399 frame->pkt_dts = avpkt->dts;
1400 if (frame->format == AV_SAMPLE_FMT_NONE)
1401 frame->format = avctx->sample_fmt;
1405 /* many decoders assign whole AVFrames, thus overwriting extended_data;
1406 * make sure it's set correctly; assume decoders that actually use
1407 * extended_data are doing it correctly */
1408 planar = av_sample_fmt_is_planar(frame->format);
1409 channels = av_get_channel_layout_nb_channels(frame->channel_layout);
1410 if (!(planar && channels > AV_NUM_DATA_POINTERS))
1411 frame->extended_data = frame->data;
1416 int avcodec_decode_subtitle2(AVCodecContext *avctx, AVSubtitle *sub,
1424 ret = avctx->codec->decode(avctx, sub, got_sub_ptr, avpkt);
1426 avctx->frame_number++;
1430 void avsubtitle_free(AVSubtitle *sub)
1434 for (i = 0; i < sub->num_rects; i++) {
1435 av_freep(&sub->rects[i]->pict.data[0]);
1436 av_freep(&sub->rects[i]->pict.data[1]);
1437 av_freep(&sub->rects[i]->pict.data[2]);
1438 av_freep(&sub->rects[i]->pict.data[3]);
1439 av_freep(&sub->rects[i]->text);
1440 av_freep(&sub->rects[i]->ass);
1441 av_freep(&sub->rects[i]);
1444 av_freep(&sub->rects);
1446 memset(sub, 0, sizeof(AVSubtitle));
1449 av_cold int avcodec_close(AVCodecContext *avctx)
1451 /* If there is a user-supplied mutex locking routine, call it. */
1452 if (ff_lockmgr_cb) {
1453 if ((*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_OBTAIN))
1457 entangled_thread_counter++;
1458 if (entangled_thread_counter != 1) {
1459 av_log(avctx, AV_LOG_ERROR, "insufficient thread locking around avcodec_open/close()\n");
1460 entangled_thread_counter--;
1464 if (avcodec_is_open(avctx)) {
1465 if (HAVE_THREADS && avctx->thread_opaque)
1466 ff_thread_free(avctx);
1467 if (avctx->codec && avctx->codec->close)
1468 avctx->codec->close(avctx);
1469 avcodec_default_free_buffers(avctx);
1470 avctx->coded_frame = NULL;
1471 av_freep(&avctx->internal);
1474 if (avctx->priv_data && avctx->codec && avctx->codec->priv_class)
1475 av_opt_free(avctx->priv_data);
1477 av_freep(&avctx->priv_data);
1478 if (av_codec_is_encoder(avctx->codec))
1479 av_freep(&avctx->extradata);
1480 avctx->codec = NULL;
1481 avctx->active_thread_type = 0;
1482 entangled_thread_counter--;
1484 /* Release any user-supplied mutex. */
1485 if (ff_lockmgr_cb) {
1486 (*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_RELEASE);
1491 AVCodec *avcodec_find_encoder(enum AVCodecID id)
1493 AVCodec *p, *experimental = NULL;
1496 if (av_codec_is_encoder(p) && p->id == id) {
1497 if (p->capabilities & CODEC_CAP_EXPERIMENTAL && !experimental) {
1504 return experimental;
1507 AVCodec *avcodec_find_encoder_by_name(const char *name)
1514 if (av_codec_is_encoder(p) && strcmp(name, p->name) == 0)
1521 AVCodec *avcodec_find_decoder(enum AVCodecID id)
1526 if (av_codec_is_decoder(p) && p->id == id)
1533 AVCodec *avcodec_find_decoder_by_name(const char *name)
1540 if (av_codec_is_decoder(p) && strcmp(name, p->name) == 0)
1547 static int get_bit_rate(AVCodecContext *ctx)
1550 int bits_per_sample;
1552 switch (ctx->codec_type) {
1553 case AVMEDIA_TYPE_VIDEO:
1554 case AVMEDIA_TYPE_DATA:
1555 case AVMEDIA_TYPE_SUBTITLE:
1556 case AVMEDIA_TYPE_ATTACHMENT:
1557 bit_rate = ctx->bit_rate;
1559 case AVMEDIA_TYPE_AUDIO:
1560 bits_per_sample = av_get_bits_per_sample(ctx->codec_id);
1561 bit_rate = bits_per_sample ? ctx->sample_rate * ctx->channels * bits_per_sample : ctx->bit_rate;
1570 size_t av_get_codec_tag_string(char *buf, size_t buf_size, unsigned int codec_tag)
1572 int i, len, ret = 0;
1574 for (i = 0; i < 4; i++) {
1575 len = snprintf(buf, buf_size,
1576 isprint(codec_tag & 0xFF) ? "%c" : "[%d]", codec_tag & 0xFF);
1578 buf_size = buf_size > len ? buf_size - len : 0;
1585 void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)
1587 const char *codec_name;
1588 const char *profile = NULL;
1592 AVRational display_aspect_ratio;
1597 p = avcodec_find_encoder(enc->codec_id);
1599 p = avcodec_find_decoder(enc->codec_id);
1602 codec_name = p->name;
1603 profile = av_get_profile_name(p, enc->profile);
1604 } else if (enc->codec_id == AV_CODEC_ID_MPEG2TS) {
1605 /* fake mpeg2 transport stream codec (currently not
1607 codec_name = "mpeg2ts";
1608 } else if (enc->codec_name[0] != '\0') {
1609 codec_name = enc->codec_name;
1611 /* output avi tags */
1613 av_get_codec_tag_string(tag_buf, sizeof(tag_buf), enc->codec_tag);
1614 snprintf(buf1, sizeof(buf1), "%s / 0x%04X", tag_buf, enc->codec_tag);
1618 switch (enc->codec_type) {
1619 case AVMEDIA_TYPE_VIDEO:
1620 snprintf(buf, buf_size,
1622 codec_name, enc->mb_decision ? " (hq)" : "");
1624 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1626 if (enc->pix_fmt != AV_PIX_FMT_NONE) {
1627 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1629 av_get_pix_fmt_name(enc->pix_fmt));
1632 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1634 enc->width, enc->height);
1635 if (enc->sample_aspect_ratio.num) {
1636 av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
1637 enc->width * enc->sample_aspect_ratio.num,
1638 enc->height * enc->sample_aspect_ratio.den,
1640 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1641 " [PAR %d:%d DAR %d:%d]",
1642 enc->sample_aspect_ratio.num, enc->sample_aspect_ratio.den,
1643 display_aspect_ratio.num, display_aspect_ratio.den);
1645 if (av_log_get_level() >= AV_LOG_DEBUG) {
1646 int g = av_gcd(enc->time_base.num, enc->time_base.den);
1647 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1649 enc->time_base.num / g, enc->time_base.den / g);
1653 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1654 ", q=%d-%d", enc->qmin, enc->qmax);
1657 case AVMEDIA_TYPE_AUDIO:
1658 snprintf(buf, buf_size,
1662 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1664 if (enc->sample_rate) {
1665 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1666 ", %d Hz", enc->sample_rate);
1668 av_strlcat(buf, ", ", buf_size);
1669 av_get_channel_layout_string(buf + strlen(buf), buf_size - strlen(buf), enc->channels, enc->channel_layout);
1670 if (enc->sample_fmt != AV_SAMPLE_FMT_NONE) {
1671 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1672 ", %s", av_get_sample_fmt_name(enc->sample_fmt));
1675 case AVMEDIA_TYPE_DATA:
1676 snprintf(buf, buf_size, "Data: %s", codec_name);
1678 case AVMEDIA_TYPE_SUBTITLE:
1679 snprintf(buf, buf_size, "Subtitle: %s", codec_name);
1681 case AVMEDIA_TYPE_ATTACHMENT:
1682 snprintf(buf, buf_size, "Attachment: %s", codec_name);
1685 snprintf(buf, buf_size, "Invalid Codec type %d", enc->codec_type);
1689 if (enc->flags & CODEC_FLAG_PASS1)
1690 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1692 if (enc->flags & CODEC_FLAG_PASS2)
1693 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1696 bitrate = get_bit_rate(enc);
1698 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1699 ", %d kb/s", bitrate / 1000);
1703 const char *av_get_profile_name(const AVCodec *codec, int profile)
1706 if (profile == FF_PROFILE_UNKNOWN || !codec->profiles)
1709 for (p = codec->profiles; p->profile != FF_PROFILE_UNKNOWN; p++)
1710 if (p->profile == profile)
1716 unsigned avcodec_version(void)
1718 return LIBAVCODEC_VERSION_INT;
1721 const char *avcodec_configuration(void)
1723 return LIBAV_CONFIGURATION;
1726 const char *avcodec_license(void)
1728 #define LICENSE_PREFIX "libavcodec license: "
1729 return LICENSE_PREFIX LIBAV_LICENSE + sizeof(LICENSE_PREFIX) - 1;
1732 void avcodec_flush_buffers(AVCodecContext *avctx)
1734 if (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME)
1735 ff_thread_flush(avctx);
1736 else if (avctx->codec->flush)
1737 avctx->codec->flush(avctx);
1740 static void video_free_buffers(AVCodecContext *s)
1742 AVCodecInternal *avci = s->internal;
1748 if (avci->buffer_count)
1749 av_log(s, AV_LOG_WARNING, "Found %i unreleased buffers!\n",
1750 avci->buffer_count);
1751 for (i = 0; i < INTERNAL_BUFFER_SIZE; i++) {
1752 InternalBuffer *buf = &avci->buffer[i];
1753 for (j = 0; j < 4; j++) {
1754 av_freep(&buf->base[j]);
1755 buf->data[j] = NULL;
1758 av_freep(&avci->buffer);
1760 avci->buffer_count = 0;
1763 static void audio_free_buffers(AVCodecContext *avctx)
1765 AVCodecInternal *avci = avctx->internal;
1766 InternalBuffer *buf;
1772 if (buf->extended_data) {
1773 av_free(buf->extended_data[0]);
1774 if (buf->extended_data != buf->data)
1775 av_free(buf->extended_data);
1777 av_freep(&avci->buffer);
1780 void avcodec_default_free_buffers(AVCodecContext *avctx)
1782 switch (avctx->codec_type) {
1783 case AVMEDIA_TYPE_VIDEO:
1784 video_free_buffers(avctx);
1786 case AVMEDIA_TYPE_AUDIO:
1787 audio_free_buffers(avctx);
1794 int av_get_exact_bits_per_sample(enum AVCodecID codec_id)
1797 case AV_CODEC_ID_ADPCM_CT:
1798 case AV_CODEC_ID_ADPCM_IMA_APC:
1799 case AV_CODEC_ID_ADPCM_IMA_EA_SEAD:
1800 case AV_CODEC_ID_ADPCM_IMA_WS:
1801 case AV_CODEC_ID_ADPCM_G722:
1802 case AV_CODEC_ID_ADPCM_YAMAHA:
1804 case AV_CODEC_ID_PCM_ALAW:
1805 case AV_CODEC_ID_PCM_MULAW:
1806 case AV_CODEC_ID_PCM_S8:
1807 case AV_CODEC_ID_PCM_U8:
1808 case AV_CODEC_ID_PCM_ZORK:
1810 case AV_CODEC_ID_PCM_S16BE:
1811 case AV_CODEC_ID_PCM_S16LE:
1812 case AV_CODEC_ID_PCM_S16LE_PLANAR:
1813 case AV_CODEC_ID_PCM_U16BE:
1814 case AV_CODEC_ID_PCM_U16LE:
1816 case AV_CODEC_ID_PCM_S24DAUD:
1817 case AV_CODEC_ID_PCM_S24BE:
1818 case AV_CODEC_ID_PCM_S24LE:
1819 case AV_CODEC_ID_PCM_U24BE:
1820 case AV_CODEC_ID_PCM_U24LE:
1822 case AV_CODEC_ID_PCM_S32BE:
1823 case AV_CODEC_ID_PCM_S32LE:
1824 case AV_CODEC_ID_PCM_U32BE:
1825 case AV_CODEC_ID_PCM_U32LE:
1826 case AV_CODEC_ID_PCM_F32BE:
1827 case AV_CODEC_ID_PCM_F32LE:
1829 case AV_CODEC_ID_PCM_F64BE:
1830 case AV_CODEC_ID_PCM_F64LE:
1837 int av_get_bits_per_sample(enum AVCodecID codec_id)
1840 case AV_CODEC_ID_ADPCM_SBPRO_2:
1842 case AV_CODEC_ID_ADPCM_SBPRO_3:
1844 case AV_CODEC_ID_ADPCM_SBPRO_4:
1845 case AV_CODEC_ID_ADPCM_IMA_WAV:
1846 case AV_CODEC_ID_ADPCM_IMA_QT:
1847 case AV_CODEC_ID_ADPCM_SWF:
1848 case AV_CODEC_ID_ADPCM_MS:
1851 return av_get_exact_bits_per_sample(codec_id);
1855 int av_get_audio_frame_duration(AVCodecContext *avctx, int frame_bytes)
1857 int id, sr, ch, ba, tag, bps;
1859 id = avctx->codec_id;
1860 sr = avctx->sample_rate;
1861 ch = avctx->channels;
1862 ba = avctx->block_align;
1863 tag = avctx->codec_tag;
1864 bps = av_get_exact_bits_per_sample(avctx->codec_id);
1866 /* codecs with an exact constant bits per sample */
1867 if (bps > 0 && ch > 0 && frame_bytes > 0)
1868 return (frame_bytes * 8) / (bps * ch);
1869 bps = avctx->bits_per_coded_sample;
1871 /* codecs with a fixed packet duration */
1873 case AV_CODEC_ID_ADPCM_ADX: return 32;
1874 case AV_CODEC_ID_ADPCM_IMA_QT: return 64;
1875 case AV_CODEC_ID_ADPCM_EA_XAS: return 128;
1876 case AV_CODEC_ID_AMR_NB:
1877 case AV_CODEC_ID_GSM:
1878 case AV_CODEC_ID_QCELP:
1879 case AV_CODEC_ID_RA_144:
1880 case AV_CODEC_ID_RA_288: return 160;
1881 case AV_CODEC_ID_IMC: return 256;
1882 case AV_CODEC_ID_AMR_WB:
1883 case AV_CODEC_ID_GSM_MS: return 320;
1884 case AV_CODEC_ID_MP1: return 384;
1885 case AV_CODEC_ID_ATRAC1: return 512;
1886 case AV_CODEC_ID_ATRAC3: return 1024;
1887 case AV_CODEC_ID_MP2:
1888 case AV_CODEC_ID_MUSEPACK7: return 1152;
1889 case AV_CODEC_ID_AC3: return 1536;
1893 /* calc from sample rate */
1894 if (id == AV_CODEC_ID_TTA)
1895 return 256 * sr / 245;
1898 /* calc from sample rate and channels */
1899 if (id == AV_CODEC_ID_BINKAUDIO_DCT)
1900 return (480 << (sr / 22050)) / ch;
1905 /* calc from block_align */
1906 if (id == AV_CODEC_ID_SIPR) {
1908 case 20: return 160;
1909 case 19: return 144;
1910 case 29: return 288;
1911 case 37: return 480;
1913 } else if (id == AV_CODEC_ID_ILBC) {
1915 case 38: return 160;
1916 case 50: return 240;
1921 if (frame_bytes > 0) {
1922 /* calc from frame_bytes only */
1923 if (id == AV_CODEC_ID_TRUESPEECH)
1924 return 240 * (frame_bytes / 32);
1925 if (id == AV_CODEC_ID_NELLYMOSER)
1926 return 256 * (frame_bytes / 64);
1929 /* calc from frame_bytes and bits_per_coded_sample */
1930 if (id == AV_CODEC_ID_ADPCM_G726)
1931 return frame_bytes * 8 / bps;
1935 /* calc from frame_bytes and channels */
1937 case AV_CODEC_ID_ADPCM_4XM:
1938 case AV_CODEC_ID_ADPCM_IMA_ISS:
1939 return (frame_bytes - 4 * ch) * 2 / ch;
1940 case AV_CODEC_ID_ADPCM_IMA_SMJPEG:
1941 return (frame_bytes - 4) * 2 / ch;
1942 case AV_CODEC_ID_ADPCM_IMA_AMV:
1943 return (frame_bytes - 8) * 2 / ch;
1944 case AV_CODEC_ID_ADPCM_XA:
1945 return (frame_bytes / 128) * 224 / ch;
1946 case AV_CODEC_ID_INTERPLAY_DPCM:
1947 return (frame_bytes - 6 - ch) / ch;
1948 case AV_CODEC_ID_ROQ_DPCM:
1949 return (frame_bytes - 8) / ch;
1950 case AV_CODEC_ID_XAN_DPCM:
1951 return (frame_bytes - 2 * ch) / ch;
1952 case AV_CODEC_ID_MACE3:
1953 return 3 * frame_bytes / ch;
1954 case AV_CODEC_ID_MACE6:
1955 return 6 * frame_bytes / ch;
1956 case AV_CODEC_ID_PCM_LXF:
1957 return 2 * (frame_bytes / (5 * ch));
1961 /* calc from frame_bytes, channels, and codec_tag */
1962 if (id == AV_CODEC_ID_SOL_DPCM) {
1964 return frame_bytes / ch;
1966 return frame_bytes * 2 / ch;
1971 /* calc from frame_bytes, channels, and block_align */
1972 int blocks = frame_bytes / ba;
1973 switch (avctx->codec_id) {
1974 case AV_CODEC_ID_ADPCM_IMA_WAV:
1975 return blocks * (1 + (ba - 4 * ch) / (4 * ch) * 8);
1976 case AV_CODEC_ID_ADPCM_IMA_DK3:
1977 return blocks * (((ba - 16) * 2 / 3 * 4) / ch);
1978 case AV_CODEC_ID_ADPCM_IMA_DK4:
1979 return blocks * (1 + (ba - 4 * ch) * 2 / ch);
1980 case AV_CODEC_ID_ADPCM_MS:
1981 return blocks * (2 + (ba - 7 * ch) * 2 / ch);
1986 /* calc from frame_bytes, channels, and bits_per_coded_sample */
1987 switch (avctx->codec_id) {
1988 case AV_CODEC_ID_PCM_DVD:
1989 return 2 * (frame_bytes / ((bps * 2 / 8) * ch));
1990 case AV_CODEC_ID_PCM_BLURAY:
1991 return frame_bytes / ((FFALIGN(ch, 2) * bps) / 8);
1992 case AV_CODEC_ID_S302M:
1993 return 2 * (frame_bytes / ((bps + 4) / 4)) / ch;
2003 int ff_thread_init(AVCodecContext *s)
2010 unsigned int av_xiphlacing(unsigned char *s, unsigned int v)
2024 int ff_match_2uint16(const uint16_t(*tab)[2], int size, int a, int b)
2027 for (i = 0; i < size && !(tab[i][0] == a && tab[i][1] == b); i++) ;
2031 void av_log_missing_feature(void *avc, const char *feature, int want_sample)
2033 av_log(avc, AV_LOG_WARNING, "%s is not implemented. Update your Libav "
2034 "version to the newest one from Git. If the problem still "
2035 "occurs, it means that your file has a feature which has not "
2036 "been implemented.\n", feature);
2038 av_log_ask_for_sample(avc, NULL);
2041 void av_log_ask_for_sample(void *avc, const char *msg, ...)
2043 va_list argument_list;
2045 va_start(argument_list, msg);
2048 av_vlog(avc, AV_LOG_WARNING, msg, argument_list);
2049 av_log(avc, AV_LOG_WARNING, "If you want to help, upload a sample "
2050 "of this file to ftp://upload.libav.org/incoming/ "
2051 "and contact the libav-devel mailing list.\n");
2053 va_end(argument_list);
2056 static AVHWAccel *first_hwaccel = NULL;
2058 void av_register_hwaccel(AVHWAccel *hwaccel)
2060 AVHWAccel **p = &first_hwaccel;
2064 hwaccel->next = NULL;
2067 AVHWAccel *av_hwaccel_next(AVHWAccel *hwaccel)
2069 return hwaccel ? hwaccel->next : first_hwaccel;
2072 AVHWAccel *ff_find_hwaccel(enum AVCodecID codec_id, enum AVPixelFormat pix_fmt)
2074 AVHWAccel *hwaccel = NULL;
2076 while ((hwaccel = av_hwaccel_next(hwaccel)))
2077 if (hwaccel->id == codec_id
2078 && hwaccel->pix_fmt == pix_fmt)
2083 int av_lockmgr_register(int (*cb)(void **mutex, enum AVLockOp op))
2085 if (ff_lockmgr_cb) {
2086 if (ff_lockmgr_cb(&codec_mutex, AV_LOCK_DESTROY))
2088 if (ff_lockmgr_cb(&avformat_mutex, AV_LOCK_DESTROY))
2094 if (ff_lockmgr_cb) {
2095 if (ff_lockmgr_cb(&codec_mutex, AV_LOCK_CREATE))
2097 if (ff_lockmgr_cb(&avformat_mutex, AV_LOCK_CREATE))
2103 int avpriv_lock_avformat(void)
2105 if (ff_lockmgr_cb) {
2106 if ((*ff_lockmgr_cb)(&avformat_mutex, AV_LOCK_OBTAIN))
2112 int avpriv_unlock_avformat(void)
2114 if (ff_lockmgr_cb) {
2115 if ((*ff_lockmgr_cb)(&avformat_mutex, AV_LOCK_RELEASE))
2121 unsigned int avpriv_toupper4(unsigned int x)
2123 return toupper(x & 0xFF)
2124 + (toupper((x >> 8) & 0xFF) << 8)
2125 + (toupper((x >> 16) & 0xFF) << 16)
2126 + (toupper((x >> 24) & 0xFF) << 24);
2131 int ff_thread_get_buffer(AVCodecContext *avctx, AVFrame *f)
2134 return avctx->get_buffer(avctx, f);
2137 void ff_thread_release_buffer(AVCodecContext *avctx, AVFrame *f)
2139 f->owner->release_buffer(f->owner, f);
2142 void ff_thread_finish_setup(AVCodecContext *avctx)
2146 void ff_thread_report_progress(AVFrame *f, int progress, int field)
2150 void ff_thread_await_progress(AVFrame *f, int progress, int field)
2156 enum AVMediaType avcodec_get_type(enum AVCodecID codec_id)
2158 if (codec_id <= AV_CODEC_ID_NONE)
2159 return AVMEDIA_TYPE_UNKNOWN;
2160 else if (codec_id < AV_CODEC_ID_FIRST_AUDIO)
2161 return AVMEDIA_TYPE_VIDEO;
2162 else if (codec_id < AV_CODEC_ID_FIRST_SUBTITLE)
2163 return AVMEDIA_TYPE_AUDIO;
2164 else if (codec_id < AV_CODEC_ID_FIRST_UNKNOWN)
2165 return AVMEDIA_TYPE_SUBTITLE;
2167 return AVMEDIA_TYPE_UNKNOWN;
2170 int avcodec_is_open(AVCodecContext *s)
2172 return !!s->internal;