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/attributes.h"
30 #include "libavutil/avassert.h"
31 #include "libavutil/avstring.h"
32 #include "libavutil/channel_layout.h"
33 #include "libavutil/crc.h"
34 #include "libavutil/frame.h"
35 #include "libavutil/internal.h"
36 #include "libavutil/mathematics.h"
37 #include "libavutil/pixdesc.h"
38 #include "libavutil/imgutils.h"
39 #include "libavutil/samplefmt.h"
40 #include "libavutil/dict.h"
43 #include "libavutil/opt.h"
46 #include "bytestream.h"
53 static int volatile entangled_thread_counter = 0;
54 static int (*lockmgr_cb)(void **mutex, enum AVLockOp op);
55 static void *codec_mutex;
56 static void *avformat_mutex;
58 #if FF_API_FAST_MALLOC && CONFIG_SHARED && HAVE_SYMVER
59 FF_SYMVER(void*, av_fast_realloc, (void *ptr, unsigned int *size, size_t min_size), "LIBAVCODEC_55")
61 return av_fast_realloc(ptr, size, min_size);
64 FF_SYMVER(void, av_fast_malloc, (void *ptr, unsigned int *size, size_t min_size), "LIBAVCODEC_55")
66 av_fast_malloc(ptr, size, min_size);
70 void av_fast_padded_malloc(void *ptr, unsigned int *size, size_t min_size)
73 if (min_size > SIZE_MAX - FF_INPUT_BUFFER_PADDING_SIZE) {
78 av_fast_malloc(p, size, min_size + FF_INPUT_BUFFER_PADDING_SIZE);
80 memset((uint8_t *)*p + min_size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
83 /* encoder management */
84 static AVCodec *first_avcodec = NULL;
86 AVCodec *av_codec_next(const AVCodec *c)
94 static av_cold void avcodec_init(void)
96 static int initialized = 0;
103 ff_dsputil_static_init();
106 int av_codec_is_encoder(const AVCodec *codec)
108 return codec && (codec->encode_sub || codec->encode2);
111 int av_codec_is_decoder(const AVCodec *codec)
113 return codec && codec->decode;
116 av_cold void avcodec_register(AVCodec *codec)
126 if (codec->init_static_data)
127 codec->init_static_data(codec);
130 unsigned avcodec_get_edge_width(void)
135 #if FF_API_SET_DIMENSIONS
136 void avcodec_set_dimensions(AVCodecContext *s, int width, int height)
138 ff_set_dimensions(s, width, height);
142 int ff_set_dimensions(AVCodecContext *s, int width, int height)
144 int ret = av_image_check_size(width, height, 0, s);
148 s->width = s->coded_width = width;
149 s->height = s->coded_height = height;
154 int ff_side_data_update_matrix_encoding(AVFrame *frame,
155 enum AVMatrixEncoding matrix_encoding)
157 AVFrameSideData *side_data;
158 enum AVMatrixEncoding *data;
160 side_data = av_frame_get_side_data(frame, AV_FRAME_DATA_MATRIXENCODING);
162 side_data = av_frame_new_side_data(frame, AV_FRAME_DATA_MATRIXENCODING,
163 sizeof(enum AVMatrixEncoding));
166 return AVERROR(ENOMEM);
168 data = (enum AVMatrixEncoding*)side_data->data;
169 *data = matrix_encoding;
174 #if HAVE_NEON || ARCH_PPC || HAVE_MMX
175 # define STRIDE_ALIGN 16
177 # define STRIDE_ALIGN 8
180 void avcodec_align_dimensions2(AVCodecContext *s, int *width, int *height,
181 int linesize_align[AV_NUM_DATA_POINTERS])
187 switch (s->pix_fmt) {
188 case AV_PIX_FMT_YUV420P:
189 case AV_PIX_FMT_YUYV422:
190 case AV_PIX_FMT_UYVY422:
191 case AV_PIX_FMT_YUV422P:
192 case AV_PIX_FMT_YUV440P:
193 case AV_PIX_FMT_YUV444P:
194 case AV_PIX_FMT_GBRP:
195 case AV_PIX_FMT_GRAY8:
196 case AV_PIX_FMT_GRAY16BE:
197 case AV_PIX_FMT_GRAY16LE:
198 case AV_PIX_FMT_YUVJ420P:
199 case AV_PIX_FMT_YUVJ422P:
200 case AV_PIX_FMT_YUVJ440P:
201 case AV_PIX_FMT_YUVJ444P:
202 case AV_PIX_FMT_YUVA420P:
203 case AV_PIX_FMT_YUVA422P:
204 case AV_PIX_FMT_YUVA444P:
205 case AV_PIX_FMT_YUV420P9LE:
206 case AV_PIX_FMT_YUV420P9BE:
207 case AV_PIX_FMT_YUV420P10LE:
208 case AV_PIX_FMT_YUV420P10BE:
209 case AV_PIX_FMT_YUV422P9LE:
210 case AV_PIX_FMT_YUV422P9BE:
211 case AV_PIX_FMT_YUV422P10LE:
212 case AV_PIX_FMT_YUV422P10BE:
213 case AV_PIX_FMT_YUVA422P10LE:
214 case AV_PIX_FMT_YUVA422P10BE:
215 case AV_PIX_FMT_YUV444P9LE:
216 case AV_PIX_FMT_YUV444P9BE:
217 case AV_PIX_FMT_YUV444P10LE:
218 case AV_PIX_FMT_YUV444P10BE:
219 case AV_PIX_FMT_YUVA444P10LE:
220 case AV_PIX_FMT_YUVA444P10BE:
221 case AV_PIX_FMT_GBRP9LE:
222 case AV_PIX_FMT_GBRP9BE:
223 case AV_PIX_FMT_GBRP10LE:
224 case AV_PIX_FMT_GBRP10BE:
225 w_align = 16; //FIXME assume 16 pixel per macroblock
226 h_align = 16 * 2; // interlaced needs 2 macroblocks height
228 case AV_PIX_FMT_YUV411P:
229 case AV_PIX_FMT_UYYVYY411:
233 case AV_PIX_FMT_YUV410P:
234 if (s->codec_id == AV_CODEC_ID_SVQ1) {
238 case AV_PIX_FMT_RGB555:
239 if (s->codec_id == AV_CODEC_ID_RPZA) {
243 case AV_PIX_FMT_PAL8:
244 case AV_PIX_FMT_BGR8:
245 case AV_PIX_FMT_RGB8:
246 if (s->codec_id == AV_CODEC_ID_SMC) {
251 case AV_PIX_FMT_BGR24:
252 if ((s->codec_id == AV_CODEC_ID_MSZH) ||
253 (s->codec_id == AV_CODEC_ID_ZLIB)) {
264 *width = FFALIGN(*width, w_align);
265 *height = FFALIGN(*height, h_align);
266 if (s->codec_id == AV_CODEC_ID_H264)
267 // some of the optimized chroma MC reads one line too much
270 for (i = 0; i < 4; i++)
271 linesize_align[i] = STRIDE_ALIGN;
274 void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height)
276 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(s->pix_fmt);
277 int chroma_shift = desc->log2_chroma_w;
278 int linesize_align[AV_NUM_DATA_POINTERS];
281 avcodec_align_dimensions2(s, width, height, linesize_align);
282 align = FFMAX(linesize_align[0], linesize_align[3]);
283 linesize_align[1] <<= chroma_shift;
284 linesize_align[2] <<= chroma_shift;
285 align = FFMAX3(align, linesize_align[1], linesize_align[2]);
286 *width = FFALIGN(*width, align);
289 int avcodec_fill_audio_frame(AVFrame *frame, int nb_channels,
290 enum AVSampleFormat sample_fmt, const uint8_t *buf,
291 int buf_size, int align)
293 int ch, planar, needed_size, ret = 0;
295 needed_size = av_samples_get_buffer_size(NULL, nb_channels,
296 frame->nb_samples, sample_fmt,
298 if (buf_size < needed_size)
299 return AVERROR(EINVAL);
301 planar = av_sample_fmt_is_planar(sample_fmt);
302 if (planar && nb_channels > AV_NUM_DATA_POINTERS) {
303 if (!(frame->extended_data = av_mallocz(nb_channels *
304 sizeof(*frame->extended_data))))
305 return AVERROR(ENOMEM);
307 frame->extended_data = frame->data;
310 if ((ret = av_samples_fill_arrays(frame->extended_data, &frame->linesize[0],
311 buf, nb_channels, frame->nb_samples,
312 sample_fmt, align)) < 0) {
313 if (frame->extended_data != frame->data)
314 av_free(frame->extended_data);
317 if (frame->extended_data != frame->data) {
318 for (ch = 0; ch < AV_NUM_DATA_POINTERS; ch++)
319 frame->data[ch] = frame->extended_data[ch];
325 static int update_frame_pool(AVCodecContext *avctx, AVFrame *frame)
327 FramePool *pool = avctx->internal->pool;
330 switch (avctx->codec_type) {
331 case AVMEDIA_TYPE_VIDEO: {
334 int w = frame->width;
335 int h = frame->height;
336 int tmpsize, unaligned;
338 if (pool->format == frame->format &&
339 pool->width == frame->width && pool->height == frame->height)
342 avcodec_align_dimensions2(avctx, &w, &h, pool->stride_align);
344 if (!(avctx->flags & CODEC_FLAG_EMU_EDGE)) {
350 // NOTE: do not align linesizes individually, this breaks e.g. assumptions
351 // that linesize[0] == 2*linesize[1] in the MPEG-encoder for 4:2:2
352 av_image_fill_linesizes(picture.linesize, avctx->pix_fmt, w);
353 // increase alignment of w for next try (rhs gives the lowest bit set in w)
357 for (i = 0; i < 4; i++)
358 unaligned |= picture.linesize[i] % pool->stride_align[i];
361 tmpsize = av_image_fill_pointers(picture.data, avctx->pix_fmt, h,
362 NULL, picture.linesize);
366 for (i = 0; i < 3 && picture.data[i + 1]; i++)
367 size[i] = picture.data[i + 1] - picture.data[i];
368 size[i] = tmpsize - (picture.data[i] - picture.data[0]);
370 for (i = 0; i < 4; i++) {
371 av_buffer_pool_uninit(&pool->pools[i]);
372 pool->linesize[i] = picture.linesize[i];
374 pool->pools[i] = av_buffer_pool_init(size[i] + 16, NULL);
375 if (!pool->pools[i]) {
376 ret = AVERROR(ENOMEM);
381 pool->format = frame->format;
382 pool->width = frame->width;
383 pool->height = frame->height;
387 case AVMEDIA_TYPE_AUDIO: {
388 int ch = av_get_channel_layout_nb_channels(frame->channel_layout);
389 int planar = av_sample_fmt_is_planar(frame->format);
390 int planes = planar ? ch : 1;
392 if (pool->format == frame->format && pool->planes == planes &&
393 pool->channels == ch && frame->nb_samples == pool->samples)
396 av_buffer_pool_uninit(&pool->pools[0]);
397 ret = av_samples_get_buffer_size(&pool->linesize[0], ch,
398 frame->nb_samples, frame->format, 0);
402 pool->pools[0] = av_buffer_pool_init(pool->linesize[0], NULL);
403 if (!pool->pools[0]) {
404 ret = AVERROR(ENOMEM);
408 pool->format = frame->format;
409 pool->planes = planes;
411 pool->samples = frame->nb_samples;
414 default: av_assert0(0);
418 for (i = 0; i < 4; i++)
419 av_buffer_pool_uninit(&pool->pools[i]);
421 pool->planes = pool->channels = pool->samples = 0;
422 pool->width = pool->height = 0;
426 static int audio_get_buffer(AVCodecContext *avctx, AVFrame *frame)
428 FramePool *pool = avctx->internal->pool;
429 int planes = pool->planes;
432 frame->linesize[0] = pool->linesize[0];
434 if (planes > AV_NUM_DATA_POINTERS) {
435 frame->extended_data = av_mallocz(planes * sizeof(*frame->extended_data));
436 frame->nb_extended_buf = planes - AV_NUM_DATA_POINTERS;
437 frame->extended_buf = av_mallocz(frame->nb_extended_buf *
438 sizeof(*frame->extended_buf));
439 if (!frame->extended_data || !frame->extended_buf) {
440 av_freep(&frame->extended_data);
441 av_freep(&frame->extended_buf);
442 return AVERROR(ENOMEM);
445 frame->extended_data = frame->data;
447 for (i = 0; i < FFMIN(planes, AV_NUM_DATA_POINTERS); i++) {
448 frame->buf[i] = av_buffer_pool_get(pool->pools[0]);
451 frame->extended_data[i] = frame->data[i] = frame->buf[i]->data;
453 for (i = 0; i < frame->nb_extended_buf; i++) {
454 frame->extended_buf[i] = av_buffer_pool_get(pool->pools[0]);
455 if (!frame->extended_buf[i])
457 frame->extended_data[i + AV_NUM_DATA_POINTERS] = frame->extended_buf[i]->data;
460 if (avctx->debug & FF_DEBUG_BUFFERS)
461 av_log(avctx, AV_LOG_DEBUG, "default_get_buffer called on frame %p", frame);
465 av_frame_unref(frame);
466 return AVERROR(ENOMEM);
469 static int video_get_buffer(AVCodecContext *s, AVFrame *pic)
471 FramePool *pool = s->internal->pool;
472 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pic->format);
473 int pixel_size = desc->comp[0].step_minus1 + 1;
474 int h_chroma_shift, v_chroma_shift;
477 if (pic->data[0] != NULL) {
478 av_log(s, AV_LOG_ERROR, "pic->data[0]!=NULL in avcodec_default_get_buffer\n");
482 memset(pic->data, 0, sizeof(pic->data));
483 pic->extended_data = pic->data;
485 av_pix_fmt_get_chroma_sub_sample(s->pix_fmt, &h_chroma_shift, &v_chroma_shift);
487 for (i = 0; i < 4 && pool->pools[i]; i++) {
488 const int h_shift = i == 0 ? 0 : h_chroma_shift;
489 const int v_shift = i == 0 ? 0 : v_chroma_shift;
491 pic->linesize[i] = pool->linesize[i];
493 pic->buf[i] = av_buffer_pool_get(pool->pools[i]);
497 // no edge if EDGE EMU or not planar YUV
498 if ((s->flags & CODEC_FLAG_EMU_EDGE) || !pool->pools[2])
499 pic->data[i] = pic->buf[i]->data;
501 pic->data[i] = pic->buf[i]->data +
502 FFALIGN((pic->linesize[i] * EDGE_WIDTH >> v_shift) +
503 (pixel_size * EDGE_WIDTH >> h_shift), pool->stride_align[i]);
506 for (; i < AV_NUM_DATA_POINTERS; i++) {
508 pic->linesize[i] = 0;
510 if (pic->data[1] && !pic->data[2])
511 avpriv_set_systematic_pal2((uint32_t *)pic->data[1], s->pix_fmt);
513 if (s->debug & FF_DEBUG_BUFFERS)
514 av_log(s, AV_LOG_DEBUG, "default_get_buffer called on pic %p\n", pic);
519 return AVERROR(ENOMEM);
522 int avcodec_default_get_buffer2(AVCodecContext *avctx, AVFrame *frame, int flags)
526 if ((ret = update_frame_pool(avctx, frame)) < 0)
529 #if FF_API_GET_BUFFER
530 FF_DISABLE_DEPRECATION_WARNINGS
531 frame->type = FF_BUFFER_TYPE_INTERNAL;
532 FF_ENABLE_DEPRECATION_WARNINGS
535 switch (avctx->codec_type) {
536 case AVMEDIA_TYPE_VIDEO:
537 return video_get_buffer(avctx, frame);
538 case AVMEDIA_TYPE_AUDIO:
539 return audio_get_buffer(avctx, frame);
545 #if FF_API_GET_BUFFER
546 FF_DISABLE_DEPRECATION_WARNINGS
547 int avcodec_default_get_buffer(AVCodecContext *avctx, AVFrame *frame)
549 return avcodec_default_get_buffer2(avctx, frame, 0);
552 typedef struct CompatReleaseBufPriv {
553 AVCodecContext avctx;
555 } CompatReleaseBufPriv;
557 static void compat_free_buffer(void *opaque, uint8_t *data)
559 CompatReleaseBufPriv *priv = opaque;
560 if (priv->avctx.release_buffer)
561 priv->avctx.release_buffer(&priv->avctx, &priv->frame);
565 static void compat_release_buffer(void *opaque, uint8_t *data)
567 AVBufferRef *buf = opaque;
568 av_buffer_unref(&buf);
570 FF_ENABLE_DEPRECATION_WARNINGS
573 int ff_get_buffer(AVCodecContext *avctx, AVFrame *frame, int flags)
577 switch (avctx->codec_type) {
578 case AVMEDIA_TYPE_VIDEO:
579 frame->width = FFMAX(avctx->width, avctx->coded_width);
580 frame->height = FFMAX(avctx->height, avctx->coded_height);
581 if (frame->format < 0)
582 frame->format = avctx->pix_fmt;
583 if (!frame->sample_aspect_ratio.num)
584 frame->sample_aspect_ratio = avctx->sample_aspect_ratio;
586 if ((ret = av_image_check_size(avctx->width, avctx->height, 0, avctx)) < 0)
589 case AVMEDIA_TYPE_AUDIO:
590 if (!frame->sample_rate)
591 frame->sample_rate = avctx->sample_rate;
592 if (frame->format < 0)
593 frame->format = avctx->sample_fmt;
594 if (!frame->channel_layout) {
595 if (avctx->channel_layout) {
596 if (av_get_channel_layout_nb_channels(avctx->channel_layout) !=
598 av_log(avctx, AV_LOG_ERROR, "Inconsistent channel "
600 return AVERROR(EINVAL);
603 frame->channel_layout = avctx->channel_layout;
605 if (avctx->channels > FF_SANE_NB_CHANNELS) {
606 av_log(avctx, AV_LOG_ERROR, "Too many channels: %d.\n",
608 return AVERROR(ENOSYS);
611 frame->channel_layout = av_get_default_channel_layout(avctx->channels);
612 if (!frame->channel_layout)
613 frame->channel_layout = (1ULL << avctx->channels) - 1;
617 default: return AVERROR(EINVAL);
620 frame->pkt_pts = avctx->internal->pkt ? avctx->internal->pkt->pts : AV_NOPTS_VALUE;
621 frame->reordered_opaque = avctx->reordered_opaque;
623 #if FF_API_GET_BUFFER
624 FF_DISABLE_DEPRECATION_WARNINGS
626 * Wrap an old get_buffer()-allocated buffer in an bunch of AVBuffers.
627 * We wrap each plane in its own AVBuffer. Each of those has a reference to
628 * a dummy AVBuffer as its private data, unreffing it on free.
629 * When all the planes are freed, the dummy buffer's free callback calls
632 if (avctx->get_buffer) {
633 CompatReleaseBufPriv *priv = NULL;
634 AVBufferRef *dummy_buf = NULL;
637 if (flags & AV_GET_BUFFER_FLAG_REF)
638 frame->reference = 1;
640 ret = avctx->get_buffer(avctx, frame);
644 /* return if the buffers are already set up
645 * this would happen e.g. when a custom get_buffer() calls
646 * avcodec_default_get_buffer
651 priv = av_mallocz(sizeof(*priv));
653 ret = AVERROR(ENOMEM);
656 priv->avctx = *avctx;
657 priv->frame = *frame;
659 dummy_buf = av_buffer_create(NULL, 0, compat_free_buffer, priv, 0);
661 ret = AVERROR(ENOMEM);
665 #define WRAP_PLANE(ref_out, data, data_size) \
667 AVBufferRef *dummy_ref = av_buffer_ref(dummy_buf); \
669 ret = AVERROR(ENOMEM); \
672 ref_out = av_buffer_create(data, data_size, compat_release_buffer, \
675 av_frame_unref(frame); \
676 ret = AVERROR(ENOMEM); \
681 if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
682 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(frame->format);
684 planes = av_pix_fmt_count_planes(frame->format);
685 /* workaround for AVHWAccel plane count of 0, buf[0] is used as
686 check for allocated buffers: make libavcodec happy */
687 if (desc && desc->flags & AV_PIX_FMT_FLAG_HWACCEL)
689 if (!desc || planes <= 0) {
690 ret = AVERROR(EINVAL);
694 for (i = 0; i < planes; i++) {
695 int v_shift = (i == 1 || i == 2) ? desc->log2_chroma_h : 0;
696 int plane_size = (frame->height >> v_shift) * frame->linesize[i];
698 WRAP_PLANE(frame->buf[i], frame->data[i], plane_size);
701 int planar = av_sample_fmt_is_planar(frame->format);
702 planes = planar ? avctx->channels : 1;
704 if (planes > FF_ARRAY_ELEMS(frame->buf)) {
705 frame->nb_extended_buf = planes - FF_ARRAY_ELEMS(frame->buf);
706 frame->extended_buf = av_malloc(sizeof(*frame->extended_buf) *
707 frame->nb_extended_buf);
708 if (!frame->extended_buf) {
709 ret = AVERROR(ENOMEM);
714 for (i = 0; i < FFMIN(planes, FF_ARRAY_ELEMS(frame->buf)); i++)
715 WRAP_PLANE(frame->buf[i], frame->extended_data[i], frame->linesize[0]);
717 for (i = 0; i < frame->nb_extended_buf; i++)
718 WRAP_PLANE(frame->extended_buf[i],
719 frame->extended_data[i + FF_ARRAY_ELEMS(frame->buf)],
723 av_buffer_unref(&dummy_buf);
725 frame->width = avctx->width;
726 frame->height = avctx->height;
731 avctx->release_buffer(avctx, frame);
733 av_buffer_unref(&dummy_buf);
736 FF_ENABLE_DEPRECATION_WARNINGS
739 ret = avctx->get_buffer2(avctx, frame, flags);
741 if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
742 frame->width = avctx->width;
743 frame->height = avctx->height;
749 int ff_reget_buffer(AVCodecContext *avctx, AVFrame *frame)
754 av_assert0(avctx->codec_type == AVMEDIA_TYPE_VIDEO);
757 return ff_get_buffer(avctx, frame, AV_GET_BUFFER_FLAG_REF);
759 if (av_frame_is_writable(frame))
762 av_frame_move_ref(&tmp, frame);
764 ret = ff_get_buffer(avctx, frame, AV_GET_BUFFER_FLAG_REF);
766 av_frame_unref(&tmp);
770 av_image_copy(frame->data, frame->linesize, tmp.data, tmp.linesize,
771 frame->format, frame->width, frame->height);
773 av_frame_unref(&tmp);
778 #if FF_API_GET_BUFFER
779 void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic)
784 int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic)
791 int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2), void *arg, int *ret, int count, int size)
795 for (i = 0; i < count; i++) {
796 int r = func(c, (char *)arg + i * size);
803 int avcodec_default_execute2(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2, int jobnr, int threadnr), void *arg, int *ret, int count)
807 for (i = 0; i < count; i++) {
808 int r = func(c, arg, i, 0);
815 static int is_hwaccel_pix_fmt(enum AVPixelFormat pix_fmt)
817 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
818 return desc->flags & AV_PIX_FMT_FLAG_HWACCEL;
821 enum AVPixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum AVPixelFormat *fmt)
823 while (*fmt != AV_PIX_FMT_NONE && is_hwaccel_pix_fmt(*fmt))
828 #if FF_API_AVFRAME_LAVC
829 void avcodec_get_frame_defaults(AVFrame *frame)
831 if (frame->extended_data != frame->data)
832 av_freep(&frame->extended_data);
834 memset(frame, 0, sizeof(AVFrame));
836 frame->pts = AV_NOPTS_VALUE;
837 frame->key_frame = 1;
838 frame->sample_aspect_ratio = (AVRational) {0, 1 };
839 frame->format = -1; /* unknown */
840 frame->extended_data = frame->data;
843 AVFrame *avcodec_alloc_frame(void)
845 AVFrame *frame = av_mallocz(sizeof(AVFrame));
850 avcodec_get_frame_defaults(frame);
855 void avcodec_free_frame(AVFrame **frame)
857 av_frame_free(frame);
861 int attribute_align_arg avcodec_open2(AVCodecContext *avctx, const AVCodec *codec, AVDictionary **options)
864 AVDictionary *tmp = NULL;
866 if (avcodec_is_open(avctx))
869 if ((!codec && !avctx->codec)) {
870 av_log(avctx, AV_LOG_ERROR, "No codec provided to avcodec_open2().\n");
871 return AVERROR(EINVAL);
873 if ((codec && avctx->codec && codec != avctx->codec)) {
874 av_log(avctx, AV_LOG_ERROR, "This AVCodecContext was allocated for %s, "
875 "but %s passed to avcodec_open2().\n", avctx->codec->name, codec->name);
876 return AVERROR(EINVAL);
879 codec = avctx->codec;
881 if (avctx->extradata_size < 0 || avctx->extradata_size >= FF_MAX_EXTRADATA_SIZE)
882 return AVERROR(EINVAL);
885 av_dict_copy(&tmp, *options, 0);
887 /* If there is a user-supplied mutex locking routine, call it. */
889 if ((*lockmgr_cb)(&codec_mutex, AV_LOCK_OBTAIN))
893 entangled_thread_counter++;
894 if (entangled_thread_counter != 1) {
895 av_log(avctx, AV_LOG_ERROR, "insufficient thread locking around avcodec_open/close()\n");
900 avctx->internal = av_mallocz(sizeof(AVCodecInternal));
901 if (!avctx->internal) {
902 ret = AVERROR(ENOMEM);
906 avctx->internal->pool = av_mallocz(sizeof(*avctx->internal->pool));
907 if (!avctx->internal->pool) {
908 ret = AVERROR(ENOMEM);
912 avctx->internal->to_free = av_frame_alloc();
913 if (!avctx->internal->to_free) {
914 ret = AVERROR(ENOMEM);
918 if (codec->priv_data_size > 0) {
919 if (!avctx->priv_data) {
920 avctx->priv_data = av_mallocz(codec->priv_data_size);
921 if (!avctx->priv_data) {
922 ret = AVERROR(ENOMEM);
925 if (codec->priv_class) {
926 *(const AVClass **)avctx->priv_data = codec->priv_class;
927 av_opt_set_defaults(avctx->priv_data);
930 if (codec->priv_class && (ret = av_opt_set_dict(avctx->priv_data, &tmp)) < 0)
933 avctx->priv_data = NULL;
935 if ((ret = av_opt_set_dict(avctx, &tmp)) < 0)
938 if (avctx->coded_width && avctx->coded_height && !avctx->width && !avctx->height)
939 ret = ff_set_dimensions(avctx, avctx->coded_width, avctx->coded_height);
940 else if (avctx->width && avctx->height)
941 ret = ff_set_dimensions(avctx, avctx->width, avctx->height);
945 if ((avctx->coded_width || avctx->coded_height || avctx->width || avctx->height)
946 && ( av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx) < 0
947 || av_image_check_size(avctx->width, avctx->height, 0, avctx) < 0)) {
948 av_log(avctx, AV_LOG_WARNING, "ignoring invalid width/height values\n");
949 ff_set_dimensions(avctx, 0, 0);
952 /* if the decoder init function was already called previously,
953 * free the already allocated subtitle_header before overwriting it */
954 if (av_codec_is_decoder(codec))
955 av_freep(&avctx->subtitle_header);
957 if (avctx->channels > FF_SANE_NB_CHANNELS) {
958 ret = AVERROR(EINVAL);
962 avctx->codec = codec;
963 if ((avctx->codec_type == AVMEDIA_TYPE_UNKNOWN || avctx->codec_type == codec->type) &&
964 avctx->codec_id == AV_CODEC_ID_NONE) {
965 avctx->codec_type = codec->type;
966 avctx->codec_id = codec->id;
968 if (avctx->codec_id != codec->id || (avctx->codec_type != codec->type
969 && avctx->codec_type != AVMEDIA_TYPE_ATTACHMENT)) {
970 av_log(avctx, AV_LOG_ERROR, "codec type or id mismatches\n");
971 ret = AVERROR(EINVAL);
974 avctx->frame_number = 0;
976 if (avctx->codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
977 avctx->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
978 ret = AVERROR_EXPERIMENTAL;
982 if (avctx->codec_type == AVMEDIA_TYPE_AUDIO &&
983 (!avctx->time_base.num || !avctx->time_base.den)) {
984 avctx->time_base.num = 1;
985 avctx->time_base.den = avctx->sample_rate;
989 ret = ff_thread_init(avctx);
994 if (!HAVE_THREADS && !(codec->capabilities & CODEC_CAP_AUTO_THREADS))
995 avctx->thread_count = 1;
997 if (av_codec_is_encoder(avctx->codec)) {
999 if (avctx->codec->sample_fmts) {
1000 for (i = 0; avctx->codec->sample_fmts[i] != AV_SAMPLE_FMT_NONE; i++) {
1001 if (avctx->sample_fmt == avctx->codec->sample_fmts[i])
1003 if (avctx->channels == 1 &&
1004 av_get_planar_sample_fmt(avctx->sample_fmt) ==
1005 av_get_planar_sample_fmt(avctx->codec->sample_fmts[i])) {
1006 avctx->sample_fmt = avctx->codec->sample_fmts[i];
1010 if (avctx->codec->sample_fmts[i] == AV_SAMPLE_FMT_NONE) {
1011 av_log(avctx, AV_LOG_ERROR, "Specified sample_fmt is not supported.\n");
1012 ret = AVERROR(EINVAL);
1016 if (avctx->codec->pix_fmts) {
1017 for (i = 0; avctx->codec->pix_fmts[i] != AV_PIX_FMT_NONE; i++)
1018 if (avctx->pix_fmt == avctx->codec->pix_fmts[i])
1020 if (avctx->codec->pix_fmts[i] == AV_PIX_FMT_NONE) {
1021 av_log(avctx, AV_LOG_ERROR, "Specified pix_fmt is not supported\n");
1022 ret = AVERROR(EINVAL);
1026 if (avctx->codec->supported_samplerates) {
1027 for (i = 0; avctx->codec->supported_samplerates[i] != 0; i++)
1028 if (avctx->sample_rate == avctx->codec->supported_samplerates[i])
1030 if (avctx->codec->supported_samplerates[i] == 0) {
1031 av_log(avctx, AV_LOG_ERROR, "Specified sample_rate is not supported\n");
1032 ret = AVERROR(EINVAL);
1036 if (avctx->codec->channel_layouts) {
1037 if (!avctx->channel_layout) {
1038 av_log(avctx, AV_LOG_WARNING, "channel_layout not specified\n");
1040 for (i = 0; avctx->codec->channel_layouts[i] != 0; i++)
1041 if (avctx->channel_layout == avctx->codec->channel_layouts[i])
1043 if (avctx->codec->channel_layouts[i] == 0) {
1044 av_log(avctx, AV_LOG_ERROR, "Specified channel_layout is not supported\n");
1045 ret = AVERROR(EINVAL);
1050 if (avctx->channel_layout && avctx->channels) {
1051 if (av_get_channel_layout_nb_channels(avctx->channel_layout) != avctx->channels) {
1052 av_log(avctx, AV_LOG_ERROR, "channel layout does not match number of channels\n");
1053 ret = AVERROR(EINVAL);
1056 } else if (avctx->channel_layout) {
1057 avctx->channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
1060 if (!avctx->rc_initial_buffer_occupancy)
1061 avctx->rc_initial_buffer_occupancy = avctx->rc_buffer_size * 3 / 4;
1064 if (avctx->codec->init && !(avctx->active_thread_type & FF_THREAD_FRAME)) {
1065 ret = avctx->codec->init(avctx);
1071 if (av_codec_is_decoder(avctx->codec)) {
1072 /* validate channel layout from the decoder */
1073 if (avctx->channel_layout) {
1074 int channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
1075 if (!avctx->channels)
1076 avctx->channels = channels;
1077 else if (channels != avctx->channels) {
1078 av_log(avctx, AV_LOG_WARNING,
1079 "channel layout does not match number of channels\n");
1080 avctx->channel_layout = 0;
1083 if (avctx->channels && avctx->channels < 0 ||
1084 avctx->channels > FF_SANE_NB_CHANNELS) {
1085 ret = AVERROR(EINVAL);
1090 entangled_thread_counter--;
1092 /* Release any user-supplied mutex. */
1094 (*lockmgr_cb)(&codec_mutex, AV_LOCK_RELEASE);
1097 av_dict_free(options);
1104 av_freep(&avctx->priv_data);
1105 if (avctx->internal) {
1106 av_frame_free(&avctx->internal->to_free);
1107 av_freep(&avctx->internal->pool);
1109 av_freep(&avctx->internal);
1110 avctx->codec = NULL;
1114 int ff_alloc_packet(AVPacket *avpkt, int size)
1116 if (size > INT_MAX - FF_INPUT_BUFFER_PADDING_SIZE)
1117 return AVERROR(EINVAL);
1120 AVBufferRef *buf = avpkt->buf;
1121 #if FF_API_DESTRUCT_PACKET
1122 FF_DISABLE_DEPRECATION_WARNINGS
1123 void *destruct = avpkt->destruct;
1124 FF_ENABLE_DEPRECATION_WARNINGS
1127 if (avpkt->size < size)
1128 return AVERROR(EINVAL);
1130 av_init_packet(avpkt);
1131 #if FF_API_DESTRUCT_PACKET
1132 FF_DISABLE_DEPRECATION_WARNINGS
1133 avpkt->destruct = destruct;
1134 FF_ENABLE_DEPRECATION_WARNINGS
1140 return av_new_packet(avpkt, size);
1145 * Pad last frame with silence.
1147 static int pad_last_frame(AVCodecContext *s, AVFrame **dst, const AVFrame *src)
1149 AVFrame *frame = NULL;
1152 if (!(frame = av_frame_alloc()))
1153 return AVERROR(ENOMEM);
1155 frame->format = src->format;
1156 frame->channel_layout = src->channel_layout;
1157 frame->nb_samples = s->frame_size;
1158 ret = av_frame_get_buffer(frame, 32);
1162 ret = av_frame_copy_props(frame, src);
1166 if ((ret = av_samples_copy(frame->extended_data, src->extended_data, 0, 0,
1167 src->nb_samples, s->channels, s->sample_fmt)) < 0)
1169 if ((ret = av_samples_set_silence(frame->extended_data, src->nb_samples,
1170 frame->nb_samples - src->nb_samples,
1171 s->channels, s->sample_fmt)) < 0)
1179 av_frame_free(&frame);
1183 int attribute_align_arg avcodec_encode_audio2(AVCodecContext *avctx,
1185 const AVFrame *frame,
1186 int *got_packet_ptr)
1189 AVFrame *padded_frame = NULL;
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);
1201 /* ensure that extended_data is properly set */
1202 if (frame && !frame->extended_data) {
1203 if (av_sample_fmt_is_planar(avctx->sample_fmt) &&
1204 avctx->channels > AV_NUM_DATA_POINTERS) {
1205 av_log(avctx, AV_LOG_ERROR, "Encoding to a planar sample format, "
1206 "with more than %d channels, but extended_data is not set.\n",
1207 AV_NUM_DATA_POINTERS);
1208 return AVERROR(EINVAL);
1210 av_log(avctx, AV_LOG_WARNING, "extended_data is not set.\n");
1213 tmp.extended_data = tmp.data;
1217 /* check for valid frame size */
1219 if (avctx->codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME) {
1220 if (frame->nb_samples > avctx->frame_size)
1221 return AVERROR(EINVAL);
1222 } else if (!(avctx->codec->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE)) {
1223 if (frame->nb_samples < avctx->frame_size &&
1224 !avctx->internal->last_audio_frame) {
1225 ret = pad_last_frame(avctx, &padded_frame, frame);
1229 frame = padded_frame;
1230 avctx->internal->last_audio_frame = 1;
1233 if (frame->nb_samples != avctx->frame_size) {
1234 ret = AVERROR(EINVAL);
1240 ret = avctx->codec->encode2(avctx, avpkt, frame, got_packet_ptr);
1242 if (*got_packet_ptr) {
1243 if (!(avctx->codec->capabilities & CODEC_CAP_DELAY)) {
1244 if (avpkt->pts == AV_NOPTS_VALUE)
1245 avpkt->pts = frame->pts;
1246 if (!avpkt->duration)
1247 avpkt->duration = ff_samples_to_time_base(avctx,
1250 avpkt->dts = avpkt->pts;
1255 if (!user_packet && avpkt->size) {
1256 ret = av_buffer_realloc(&avpkt->buf, avpkt->size);
1258 avpkt->data = avpkt->buf->data;
1261 avctx->frame_number++;
1264 if (ret < 0 || !*got_packet_ptr) {
1265 av_free_packet(avpkt);
1266 av_init_packet(avpkt);
1270 /* NOTE: if we add any audio encoders which output non-keyframe packets,
1271 * this needs to be moved to the encoders, but for now we can do it
1272 * here to simplify things */
1273 avpkt->flags |= AV_PKT_FLAG_KEY;
1276 av_frame_free(&padded_frame);
1281 int attribute_align_arg avcodec_encode_video2(AVCodecContext *avctx,
1283 const AVFrame *frame,
1284 int *got_packet_ptr)
1287 int user_packet = !!avpkt->data;
1289 *got_packet_ptr = 0;
1291 if (!(avctx->codec->capabilities & CODEC_CAP_DELAY) && !frame) {
1292 av_free_packet(avpkt);
1293 av_init_packet(avpkt);
1298 if (av_image_check_size(avctx->width, avctx->height, 0, avctx))
1299 return AVERROR(EINVAL);
1301 av_assert0(avctx->codec->encode2);
1303 ret = avctx->codec->encode2(avctx, avpkt, frame, got_packet_ptr);
1305 if (!*got_packet_ptr)
1307 else if (!(avctx->codec->capabilities & CODEC_CAP_DELAY))
1308 avpkt->pts = avpkt->dts = frame->pts;
1310 if (!user_packet && avpkt->size) {
1311 ret = av_buffer_realloc(&avpkt->buf, avpkt->size);
1313 avpkt->data = avpkt->buf->data;
1316 avctx->frame_number++;
1319 if (ret < 0 || !*got_packet_ptr)
1320 av_free_packet(avpkt);
1326 int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size,
1327 const AVSubtitle *sub)
1330 if (sub->start_display_time) {
1331 av_log(avctx, AV_LOG_ERROR, "start_display_time must be 0.\n");
1334 if (sub->num_rects == 0 || !sub->rects)
1336 ret = avctx->codec->encode_sub(avctx, buf, buf_size, sub);
1337 avctx->frame_number++;
1341 static int apply_param_change(AVCodecContext *avctx, AVPacket *avpkt)
1344 const uint8_t *data;
1347 data = av_packet_get_side_data(avpkt, AV_PKT_DATA_PARAM_CHANGE, &size);
1351 if (!(avctx->codec->capabilities & CODEC_CAP_PARAM_CHANGE)) {
1352 av_log(avctx, AV_LOG_ERROR, "This decoder does not support parameter "
1353 "changes, but PARAM_CHANGE side data was sent to it.\n");
1354 return AVERROR(EINVAL);
1360 flags = bytestream_get_le32(&data);
1363 if (flags & AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_COUNT) {
1366 avctx->channels = bytestream_get_le32(&data);
1369 if (flags & AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_LAYOUT) {
1372 avctx->channel_layout = bytestream_get_le64(&data);
1375 if (flags & AV_SIDE_DATA_PARAM_CHANGE_SAMPLE_RATE) {
1378 avctx->sample_rate = bytestream_get_le32(&data);
1381 if (flags & AV_SIDE_DATA_PARAM_CHANGE_DIMENSIONS) {
1384 avctx->width = bytestream_get_le32(&data);
1385 avctx->height = bytestream_get_le32(&data);
1387 ret = ff_set_dimensions(avctx, avctx->width, avctx->height);
1394 av_log(avctx, AV_LOG_ERROR, "PARAM_CHANGE side data too small.\n");
1395 return AVERROR_INVALIDDATA;
1398 static int unrefcount_frame(AVCodecInternal *avci, AVFrame *frame)
1402 /* move the original frame to our backup */
1403 av_frame_unref(avci->to_free);
1404 av_frame_move_ref(avci->to_free, frame);
1406 /* now copy everything except the AVBufferRefs back
1407 * note that we make a COPY of the side data, so calling av_frame_free() on
1408 * the caller's frame will work properly */
1409 ret = av_frame_copy_props(frame, avci->to_free);
1413 memcpy(frame->data, avci->to_free->data, sizeof(frame->data));
1414 memcpy(frame->linesize, avci->to_free->linesize, sizeof(frame->linesize));
1415 if (avci->to_free->extended_data != avci->to_free->data) {
1416 int planes = av_get_channel_layout_nb_channels(avci->to_free->channel_layout);
1417 int size = planes * sizeof(*frame->extended_data);
1420 av_frame_unref(frame);
1424 frame->extended_data = av_malloc(size);
1425 if (!frame->extended_data) {
1426 av_frame_unref(frame);
1427 return AVERROR(ENOMEM);
1429 memcpy(frame->extended_data, avci->to_free->extended_data,
1432 frame->extended_data = frame->data;
1434 frame->format = avci->to_free->format;
1435 frame->width = avci->to_free->width;
1436 frame->height = avci->to_free->height;
1437 frame->channel_layout = avci->to_free->channel_layout;
1438 frame->nb_samples = avci->to_free->nb_samples;
1443 int attribute_align_arg avcodec_decode_video2(AVCodecContext *avctx, AVFrame *picture,
1444 int *got_picture_ptr,
1447 AVCodecInternal *avci = avctx->internal;
1450 *got_picture_ptr = 0;
1451 if ((avctx->coded_width || avctx->coded_height) && av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx))
1454 avctx->internal->pkt = avpkt;
1455 ret = apply_param_change(avctx, avpkt);
1457 av_log(avctx, AV_LOG_ERROR, "Error applying parameter changes.\n");
1458 if (avctx->err_recognition & AV_EF_EXPLODE)
1462 av_frame_unref(picture);
1464 if ((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size || (avctx->active_thread_type & FF_THREAD_FRAME)) {
1465 if (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME)
1466 ret = ff_thread_decode_frame(avctx, picture, got_picture_ptr,
1469 ret = avctx->codec->decode(avctx, picture, got_picture_ptr,
1471 picture->pkt_dts = avpkt->dts;
1472 /* get_buffer is supposed to set frame parameters */
1473 if (!(avctx->codec->capabilities & CODEC_CAP_DR1)) {
1474 picture->sample_aspect_ratio = avctx->sample_aspect_ratio;
1475 picture->width = avctx->width;
1476 picture->height = avctx->height;
1477 picture->format = avctx->pix_fmt;
1481 emms_c(); //needed to avoid an emms_c() call before every return;
1483 if (*got_picture_ptr) {
1484 if (!avctx->refcounted_frames) {
1485 int err = unrefcount_frame(avci, picture);
1490 avctx->frame_number++;
1492 av_frame_unref(picture);
1499 int attribute_align_arg avcodec_decode_audio4(AVCodecContext *avctx,
1504 AVCodecInternal *avci = avctx->internal;
1509 avctx->internal->pkt = avpkt;
1511 if (!avpkt->data && avpkt->size) {
1512 av_log(avctx, AV_LOG_ERROR, "invalid packet: NULL data, size != 0\n");
1513 return AVERROR(EINVAL);
1516 ret = apply_param_change(avctx, avpkt);
1518 av_log(avctx, AV_LOG_ERROR, "Error applying parameter changes.\n");
1519 if (avctx->err_recognition & AV_EF_EXPLODE)
1523 av_frame_unref(frame);
1525 if ((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size) {
1526 ret = avctx->codec->decode(avctx, frame, got_frame_ptr, avpkt);
1527 if (ret >= 0 && *got_frame_ptr) {
1528 avctx->frame_number++;
1529 frame->pkt_dts = avpkt->dts;
1530 if (frame->format == AV_SAMPLE_FMT_NONE)
1531 frame->format = avctx->sample_fmt;
1533 if (!avctx->refcounted_frames) {
1534 int err = unrefcount_frame(avci, frame);
1539 av_frame_unref(frame);
1546 int avcodec_decode_subtitle2(AVCodecContext *avctx, AVSubtitle *sub,
1552 avctx->internal->pkt = avpkt;
1554 ret = avctx->codec->decode(avctx, sub, got_sub_ptr, avpkt);
1556 avctx->frame_number++;
1560 void avsubtitle_free(AVSubtitle *sub)
1564 for (i = 0; i < sub->num_rects; i++) {
1565 av_freep(&sub->rects[i]->pict.data[0]);
1566 av_freep(&sub->rects[i]->pict.data[1]);
1567 av_freep(&sub->rects[i]->pict.data[2]);
1568 av_freep(&sub->rects[i]->pict.data[3]);
1569 av_freep(&sub->rects[i]->text);
1570 av_freep(&sub->rects[i]->ass);
1571 av_freep(&sub->rects[i]);
1574 av_freep(&sub->rects);
1576 memset(sub, 0, sizeof(AVSubtitle));
1579 av_cold int avcodec_close(AVCodecContext *avctx)
1581 /* If there is a user-supplied mutex locking routine, call it. */
1583 if ((*lockmgr_cb)(&codec_mutex, AV_LOCK_OBTAIN))
1587 entangled_thread_counter++;
1588 if (entangled_thread_counter != 1) {
1589 av_log(avctx, AV_LOG_ERROR, "insufficient thread locking around avcodec_open/close()\n");
1590 entangled_thread_counter--;
1594 if (avcodec_is_open(avctx)) {
1595 FramePool *pool = avctx->internal->pool;
1597 if (HAVE_THREADS && avctx->internal->thread_ctx)
1598 ff_thread_free(avctx);
1599 if (avctx->codec && avctx->codec->close)
1600 avctx->codec->close(avctx);
1601 avctx->coded_frame = NULL;
1602 av_frame_free(&avctx->internal->to_free);
1603 for (i = 0; i < FF_ARRAY_ELEMS(pool->pools); i++)
1604 av_buffer_pool_uninit(&pool->pools[i]);
1605 av_freep(&avctx->internal->pool);
1606 av_freep(&avctx->internal);
1609 if (avctx->priv_data && avctx->codec && avctx->codec->priv_class)
1610 av_opt_free(avctx->priv_data);
1612 av_freep(&avctx->priv_data);
1613 if (av_codec_is_encoder(avctx->codec))
1614 av_freep(&avctx->extradata);
1615 avctx->codec = NULL;
1616 avctx->active_thread_type = 0;
1617 entangled_thread_counter--;
1619 /* Release any user-supplied mutex. */
1621 (*lockmgr_cb)(&codec_mutex, AV_LOCK_RELEASE);
1626 static AVCodec *find_encdec(enum AVCodecID id, int encoder)
1628 AVCodec *p, *experimental = NULL;
1631 if ((encoder ? av_codec_is_encoder(p) : av_codec_is_decoder(p)) &&
1633 if (p->capabilities & CODEC_CAP_EXPERIMENTAL && !experimental) {
1640 return experimental;
1643 AVCodec *avcodec_find_encoder(enum AVCodecID id)
1645 return find_encdec(id, 1);
1648 AVCodec *avcodec_find_encoder_by_name(const char *name)
1655 if (av_codec_is_encoder(p) && strcmp(name, p->name) == 0)
1662 AVCodec *avcodec_find_decoder(enum AVCodecID id)
1664 return find_encdec(id, 0);
1667 AVCodec *avcodec_find_decoder_by_name(const char *name)
1674 if (av_codec_is_decoder(p) && strcmp(name, p->name) == 0)
1681 static int get_bit_rate(AVCodecContext *ctx)
1684 int bits_per_sample;
1686 switch (ctx->codec_type) {
1687 case AVMEDIA_TYPE_VIDEO:
1688 case AVMEDIA_TYPE_DATA:
1689 case AVMEDIA_TYPE_SUBTITLE:
1690 case AVMEDIA_TYPE_ATTACHMENT:
1691 bit_rate = ctx->bit_rate;
1693 case AVMEDIA_TYPE_AUDIO:
1694 bits_per_sample = av_get_bits_per_sample(ctx->codec_id);
1695 bit_rate = bits_per_sample ? ctx->sample_rate * ctx->channels * bits_per_sample : ctx->bit_rate;
1704 size_t av_get_codec_tag_string(char *buf, size_t buf_size, unsigned int codec_tag)
1706 int i, len, ret = 0;
1708 #define TAG_PRINT(x) \
1709 (((x) >= '0' && (x) <= '9') || \
1710 ((x) >= 'a' && (x) <= 'z') || ((x) >= 'A' && (x) <= 'Z') || \
1711 ((x) == '.' || (x) == ' '))
1713 for (i = 0; i < 4; i++) {
1714 len = snprintf(buf, buf_size,
1715 TAG_PRINT(codec_tag & 0xFF) ? "%c" : "[%d]", codec_tag & 0xFF);
1717 buf_size = buf_size > len ? buf_size - len : 0;
1724 void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)
1726 const char *codec_name;
1727 const char *profile = NULL;
1731 AVRational display_aspect_ratio;
1736 p = avcodec_find_encoder(enc->codec_id);
1738 p = avcodec_find_decoder(enc->codec_id);
1741 codec_name = p->name;
1742 profile = av_get_profile_name(p, enc->profile);
1743 } else if (enc->codec_id == AV_CODEC_ID_MPEG2TS) {
1744 /* fake mpeg2 transport stream codec (currently not
1746 codec_name = "mpeg2ts";
1747 } else if (enc->codec_name[0] != '\0') {
1748 codec_name = enc->codec_name;
1750 /* output avi tags */
1752 av_get_codec_tag_string(tag_buf, sizeof(tag_buf), enc->codec_tag);
1753 snprintf(buf1, sizeof(buf1), "%s / 0x%04X", tag_buf, enc->codec_tag);
1757 switch (enc->codec_type) {
1758 case AVMEDIA_TYPE_VIDEO:
1759 snprintf(buf, buf_size,
1761 codec_name, enc->mb_decision ? " (hq)" : "");
1763 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1765 if (enc->pix_fmt != AV_PIX_FMT_NONE) {
1766 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1768 av_get_pix_fmt_name(enc->pix_fmt));
1771 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1773 enc->width, enc->height);
1774 if (enc->sample_aspect_ratio.num) {
1775 av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
1776 enc->width * enc->sample_aspect_ratio.num,
1777 enc->height * enc->sample_aspect_ratio.den,
1779 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1780 " [PAR %d:%d DAR %d:%d]",
1781 enc->sample_aspect_ratio.num, enc->sample_aspect_ratio.den,
1782 display_aspect_ratio.num, display_aspect_ratio.den);
1784 if (av_log_get_level() >= AV_LOG_DEBUG) {
1785 int g = av_gcd(enc->time_base.num, enc->time_base.den);
1786 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1788 enc->time_base.num / g, enc->time_base.den / g);
1792 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1793 ", q=%d-%d", enc->qmin, enc->qmax);
1796 case AVMEDIA_TYPE_AUDIO:
1797 snprintf(buf, buf_size,
1801 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1803 if (enc->sample_rate) {
1804 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1805 ", %d Hz", enc->sample_rate);
1807 av_strlcat(buf, ", ", buf_size);
1808 av_get_channel_layout_string(buf + strlen(buf), buf_size - strlen(buf), enc->channels, enc->channel_layout);
1809 if (enc->sample_fmt != AV_SAMPLE_FMT_NONE) {
1810 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1811 ", %s", av_get_sample_fmt_name(enc->sample_fmt));
1814 case AVMEDIA_TYPE_DATA:
1815 snprintf(buf, buf_size, "Data: %s", codec_name);
1817 case AVMEDIA_TYPE_SUBTITLE:
1818 snprintf(buf, buf_size, "Subtitle: %s", codec_name);
1820 case AVMEDIA_TYPE_ATTACHMENT:
1821 snprintf(buf, buf_size, "Attachment: %s", codec_name);
1824 snprintf(buf, buf_size, "Invalid Codec type %d", enc->codec_type);
1828 if (enc->flags & CODEC_FLAG_PASS1)
1829 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1831 if (enc->flags & CODEC_FLAG_PASS2)
1832 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1835 bitrate = get_bit_rate(enc);
1837 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1838 ", %d kb/s", bitrate / 1000);
1842 const char *av_get_profile_name(const AVCodec *codec, int profile)
1845 if (profile == FF_PROFILE_UNKNOWN || !codec->profiles)
1848 for (p = codec->profiles; p->profile != FF_PROFILE_UNKNOWN; p++)
1849 if (p->profile == profile)
1855 unsigned avcodec_version(void)
1857 return LIBAVCODEC_VERSION_INT;
1860 const char *avcodec_configuration(void)
1862 return LIBAV_CONFIGURATION;
1865 const char *avcodec_license(void)
1867 #define LICENSE_PREFIX "libavcodec license: "
1868 return LICENSE_PREFIX LIBAV_LICENSE + sizeof(LICENSE_PREFIX) - 1;
1871 void avcodec_flush_buffers(AVCodecContext *avctx)
1873 if (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME)
1874 ff_thread_flush(avctx);
1875 else if (avctx->codec->flush)
1876 avctx->codec->flush(avctx);
1878 if (!avctx->refcounted_frames)
1879 av_frame_unref(avctx->internal->to_free);
1882 int av_get_exact_bits_per_sample(enum AVCodecID codec_id)
1885 case AV_CODEC_ID_ADPCM_CT:
1886 case AV_CODEC_ID_ADPCM_IMA_APC:
1887 case AV_CODEC_ID_ADPCM_IMA_EA_SEAD:
1888 case AV_CODEC_ID_ADPCM_IMA_WS:
1889 case AV_CODEC_ID_ADPCM_G722:
1890 case AV_CODEC_ID_ADPCM_YAMAHA:
1892 case AV_CODEC_ID_PCM_ALAW:
1893 case AV_CODEC_ID_PCM_MULAW:
1894 case AV_CODEC_ID_PCM_S8:
1895 case AV_CODEC_ID_PCM_U8:
1896 case AV_CODEC_ID_PCM_ZORK:
1898 case AV_CODEC_ID_PCM_S16BE:
1899 case AV_CODEC_ID_PCM_S16LE:
1900 case AV_CODEC_ID_PCM_S16LE_PLANAR:
1901 case AV_CODEC_ID_PCM_U16BE:
1902 case AV_CODEC_ID_PCM_U16LE:
1904 case AV_CODEC_ID_PCM_S24DAUD:
1905 case AV_CODEC_ID_PCM_S24BE:
1906 case AV_CODEC_ID_PCM_S24LE:
1907 case AV_CODEC_ID_PCM_S24LE_PLANAR:
1908 case AV_CODEC_ID_PCM_U24BE:
1909 case AV_CODEC_ID_PCM_U24LE:
1911 case AV_CODEC_ID_PCM_S32BE:
1912 case AV_CODEC_ID_PCM_S32LE:
1913 case AV_CODEC_ID_PCM_S32LE_PLANAR:
1914 case AV_CODEC_ID_PCM_U32BE:
1915 case AV_CODEC_ID_PCM_U32LE:
1916 case AV_CODEC_ID_PCM_F32BE:
1917 case AV_CODEC_ID_PCM_F32LE:
1919 case AV_CODEC_ID_PCM_F64BE:
1920 case AV_CODEC_ID_PCM_F64LE:
1927 int av_get_bits_per_sample(enum AVCodecID codec_id)
1930 case AV_CODEC_ID_ADPCM_SBPRO_2:
1932 case AV_CODEC_ID_ADPCM_SBPRO_3:
1934 case AV_CODEC_ID_ADPCM_SBPRO_4:
1935 case AV_CODEC_ID_ADPCM_IMA_WAV:
1936 case AV_CODEC_ID_ADPCM_IMA_QT:
1937 case AV_CODEC_ID_ADPCM_SWF:
1938 case AV_CODEC_ID_ADPCM_MS:
1941 return av_get_exact_bits_per_sample(codec_id);
1945 int av_get_audio_frame_duration(AVCodecContext *avctx, int frame_bytes)
1947 int id, sr, ch, ba, tag, bps;
1949 id = avctx->codec_id;
1950 sr = avctx->sample_rate;
1951 ch = avctx->channels;
1952 ba = avctx->block_align;
1953 tag = avctx->codec_tag;
1954 bps = av_get_exact_bits_per_sample(avctx->codec_id);
1956 /* codecs with an exact constant bits per sample */
1957 if (bps > 0 && ch > 0 && frame_bytes > 0)
1958 return (frame_bytes * 8) / (bps * ch);
1959 bps = avctx->bits_per_coded_sample;
1961 /* codecs with a fixed packet duration */
1963 case AV_CODEC_ID_ADPCM_ADX: return 32;
1964 case AV_CODEC_ID_ADPCM_IMA_QT: return 64;
1965 case AV_CODEC_ID_ADPCM_EA_XAS: return 128;
1966 case AV_CODEC_ID_AMR_NB:
1967 case AV_CODEC_ID_GSM:
1968 case AV_CODEC_ID_QCELP:
1969 case AV_CODEC_ID_RA_144:
1970 case AV_CODEC_ID_RA_288: return 160;
1971 case AV_CODEC_ID_IMC: return 256;
1972 case AV_CODEC_ID_AMR_WB:
1973 case AV_CODEC_ID_GSM_MS: return 320;
1974 case AV_CODEC_ID_MP1: return 384;
1975 case AV_CODEC_ID_ATRAC1: return 512;
1976 case AV_CODEC_ID_ATRAC3: return 1024;
1977 case AV_CODEC_ID_MP2:
1978 case AV_CODEC_ID_MUSEPACK7: return 1152;
1979 case AV_CODEC_ID_AC3: return 1536;
1983 /* calc from sample rate */
1984 if (id == AV_CODEC_ID_TTA)
1985 return 256 * sr / 245;
1988 /* calc from sample rate and channels */
1989 if (id == AV_CODEC_ID_BINKAUDIO_DCT)
1990 return (480 << (sr / 22050)) / ch;
1995 /* calc from block_align */
1996 if (id == AV_CODEC_ID_SIPR) {
1998 case 20: return 160;
1999 case 19: return 144;
2000 case 29: return 288;
2001 case 37: return 480;
2003 } else if (id == AV_CODEC_ID_ILBC) {
2005 case 38: return 160;
2006 case 50: return 240;
2011 if (frame_bytes > 0) {
2012 /* calc from frame_bytes only */
2013 if (id == AV_CODEC_ID_TRUESPEECH)
2014 return 240 * (frame_bytes / 32);
2015 if (id == AV_CODEC_ID_NELLYMOSER)
2016 return 256 * (frame_bytes / 64);
2019 /* calc from frame_bytes and bits_per_coded_sample */
2020 if (id == AV_CODEC_ID_ADPCM_G726)
2021 return frame_bytes * 8 / bps;
2025 /* calc from frame_bytes and channels */
2027 case AV_CODEC_ID_ADPCM_4XM:
2028 case AV_CODEC_ID_ADPCM_IMA_ISS:
2029 return (frame_bytes - 4 * ch) * 2 / ch;
2030 case AV_CODEC_ID_ADPCM_IMA_SMJPEG:
2031 return (frame_bytes - 4) * 2 / ch;
2032 case AV_CODEC_ID_ADPCM_IMA_AMV:
2033 return (frame_bytes - 8) * 2 / ch;
2034 case AV_CODEC_ID_ADPCM_XA:
2035 return (frame_bytes / 128) * 224 / ch;
2036 case AV_CODEC_ID_INTERPLAY_DPCM:
2037 return (frame_bytes - 6 - ch) / ch;
2038 case AV_CODEC_ID_ROQ_DPCM:
2039 return (frame_bytes - 8) / ch;
2040 case AV_CODEC_ID_XAN_DPCM:
2041 return (frame_bytes - 2 * ch) / ch;
2042 case AV_CODEC_ID_MACE3:
2043 return 3 * frame_bytes / ch;
2044 case AV_CODEC_ID_MACE6:
2045 return 6 * frame_bytes / ch;
2046 case AV_CODEC_ID_PCM_LXF:
2047 return 2 * (frame_bytes / (5 * ch));
2051 /* calc from frame_bytes, channels, and codec_tag */
2052 if (id == AV_CODEC_ID_SOL_DPCM) {
2054 return frame_bytes / ch;
2056 return frame_bytes * 2 / ch;
2061 /* calc from frame_bytes, channels, and block_align */
2062 int blocks = frame_bytes / ba;
2063 switch (avctx->codec_id) {
2064 case AV_CODEC_ID_ADPCM_IMA_WAV:
2065 return blocks * (1 + (ba - 4 * ch) / (4 * ch) * 8);
2066 case AV_CODEC_ID_ADPCM_IMA_DK3:
2067 return blocks * (((ba - 16) * 2 / 3 * 4) / ch);
2068 case AV_CODEC_ID_ADPCM_IMA_DK4:
2069 return blocks * (1 + (ba - 4 * ch) * 2 / ch);
2070 case AV_CODEC_ID_ADPCM_MS:
2071 return blocks * (2 + (ba - 7 * ch) * 2 / ch);
2076 /* calc from frame_bytes, channels, and bits_per_coded_sample */
2077 switch (avctx->codec_id) {
2078 case AV_CODEC_ID_PCM_DVD:
2079 return 2 * (frame_bytes / ((bps * 2 / 8) * ch));
2080 case AV_CODEC_ID_PCM_BLURAY:
2081 return frame_bytes / ((FFALIGN(ch, 2) * bps) / 8);
2082 case AV_CODEC_ID_S302M:
2083 return 2 * (frame_bytes / ((bps + 4) / 4)) / ch;
2093 int ff_thread_init(AVCodecContext *s)
2100 unsigned int av_xiphlacing(unsigned char *s, unsigned int v)
2114 int ff_match_2uint16(const uint16_t(*tab)[2], int size, int a, int b)
2117 for (i = 0; i < size && !(tab[i][0] == a && tab[i][1] == b); i++) ;
2121 #if FF_API_MISSING_SAMPLE
2122 FF_DISABLE_DEPRECATION_WARNINGS
2123 void av_log_missing_feature(void *avc, const char *feature, int want_sample)
2125 av_log(avc, AV_LOG_WARNING, "%s is not implemented. Update your Libav "
2126 "version to the newest one from Git. If the problem still "
2127 "occurs, it means that your file has a feature which has not "
2128 "been implemented.\n", feature);
2130 av_log_ask_for_sample(avc, NULL);
2133 void av_log_ask_for_sample(void *avc, const char *msg, ...)
2135 va_list argument_list;
2137 va_start(argument_list, msg);
2140 av_vlog(avc, AV_LOG_WARNING, msg, argument_list);
2141 av_log(avc, AV_LOG_WARNING, "If you want to help, upload a sample "
2142 "of this file to ftp://upload.libav.org/incoming/ "
2143 "and contact the libav-devel mailing list.\n");
2145 va_end(argument_list);
2147 FF_ENABLE_DEPRECATION_WARNINGS
2148 #endif /* FF_API_MISSING_SAMPLE */
2150 static AVHWAccel *first_hwaccel = NULL;
2152 void av_register_hwaccel(AVHWAccel *hwaccel)
2154 AVHWAccel **p = &first_hwaccel;
2158 hwaccel->next = NULL;
2161 AVHWAccel *av_hwaccel_next(AVHWAccel *hwaccel)
2163 return hwaccel ? hwaccel->next : first_hwaccel;
2166 AVHWAccel *ff_find_hwaccel(AVCodecContext *avctx)
2168 enum AVCodecID codec_id = avctx->codec->id;
2169 enum AVPixelFormat pix_fmt = avctx->pix_fmt;
2171 AVHWAccel *hwaccel = NULL;
2173 while ((hwaccel = av_hwaccel_next(hwaccel)))
2174 if (hwaccel->id == codec_id
2175 && hwaccel->pix_fmt == pix_fmt)
2180 int av_lockmgr_register(int (*cb)(void **mutex, enum AVLockOp op))
2183 if (lockmgr_cb(&codec_mutex, AV_LOCK_DESTROY))
2185 if (lockmgr_cb(&avformat_mutex, AV_LOCK_DESTROY))
2192 if (lockmgr_cb(&codec_mutex, AV_LOCK_CREATE))
2194 if (lockmgr_cb(&avformat_mutex, AV_LOCK_CREATE))
2200 int avpriv_lock_avformat(void)
2203 if ((*lockmgr_cb)(&avformat_mutex, AV_LOCK_OBTAIN))
2209 int avpriv_unlock_avformat(void)
2212 if ((*lockmgr_cb)(&avformat_mutex, AV_LOCK_RELEASE))
2218 unsigned int avpriv_toupper4(unsigned int x)
2220 return av_toupper(x & 0xFF) +
2221 (av_toupper((x >> 8) & 0xFF) << 8) +
2222 (av_toupper((x >> 16) & 0xFF) << 16) +
2223 (av_toupper((x >> 24) & 0xFF) << 24);
2226 int ff_thread_ref_frame(ThreadFrame *dst, ThreadFrame *src)
2230 dst->owner = src->owner;
2232 ret = av_frame_ref(dst->f, src->f);
2236 if (src->progress &&
2237 !(dst->progress = av_buffer_ref(src->progress))) {
2238 ff_thread_release_buffer(dst->owner, dst);
2239 return AVERROR(ENOMEM);
2247 int ff_thread_get_buffer(AVCodecContext *avctx, ThreadFrame *f, int flags)
2250 return ff_get_buffer(avctx, f->f, flags);
2253 void ff_thread_release_buffer(AVCodecContext *avctx, ThreadFrame *f)
2255 av_frame_unref(f->f);
2258 void ff_thread_finish_setup(AVCodecContext *avctx)
2262 void ff_thread_report_progress(ThreadFrame *f, int progress, int field)
2266 void ff_thread_await_progress(ThreadFrame *f, int progress, int field)
2272 enum AVMediaType avcodec_get_type(enum AVCodecID codec_id)
2274 if (codec_id <= AV_CODEC_ID_NONE)
2275 return AVMEDIA_TYPE_UNKNOWN;
2276 else if (codec_id < AV_CODEC_ID_FIRST_AUDIO)
2277 return AVMEDIA_TYPE_VIDEO;
2278 else if (codec_id < AV_CODEC_ID_FIRST_SUBTITLE)
2279 return AVMEDIA_TYPE_AUDIO;
2280 else if (codec_id < AV_CODEC_ID_FIRST_UNKNOWN)
2281 return AVMEDIA_TYPE_SUBTITLE;
2283 return AVMEDIA_TYPE_UNKNOWN;
2286 int avcodec_is_open(AVCodecContext *s)
2288 return !!s->internal;
2291 const uint8_t *avpriv_find_start_code(const uint8_t *restrict p,
2293 uint32_t * restrict state)
2301 for (i = 0; i < 3; i++) {
2302 uint32_t tmp = *state << 8;
2303 *state = tmp + *(p++);
2304 if (tmp == 0x100 || p == end)
2309 if (p[-1] > 1 ) p += 3;
2310 else if (p[-2] ) p += 2;
2311 else if (p[-3]|(p[-1]-1)) p++;
2318 p = FFMIN(p, end) - 4;
2319 *state = AV_RB32(p);