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);
131 unsigned avcodec_get_edge_width(void)
137 #if FF_API_SET_DIMENSIONS
138 void avcodec_set_dimensions(AVCodecContext *s, int width, int height)
140 ff_set_dimensions(s, width, height);
144 int ff_set_dimensions(AVCodecContext *s, int width, int height)
146 int ret = av_image_check_size(width, height, 0, s);
150 s->width = s->coded_width = width;
151 s->height = s->coded_height = height;
156 int ff_side_data_update_matrix_encoding(AVFrame *frame,
157 enum AVMatrixEncoding matrix_encoding)
159 AVFrameSideData *side_data;
160 enum AVMatrixEncoding *data;
162 side_data = av_frame_get_side_data(frame, AV_FRAME_DATA_MATRIXENCODING);
164 side_data = av_frame_new_side_data(frame, AV_FRAME_DATA_MATRIXENCODING,
165 sizeof(enum AVMatrixEncoding));
168 return AVERROR(ENOMEM);
170 data = (enum AVMatrixEncoding*)side_data->data;
171 *data = matrix_encoding;
176 #if HAVE_NEON || ARCH_PPC || HAVE_MMX
177 # define STRIDE_ALIGN 16
179 # define STRIDE_ALIGN 8
182 void avcodec_align_dimensions2(AVCodecContext *s, int *width, int *height,
183 int linesize_align[AV_NUM_DATA_POINTERS])
189 switch (s->pix_fmt) {
190 case AV_PIX_FMT_YUV420P:
191 case AV_PIX_FMT_YUYV422:
192 case AV_PIX_FMT_YVYU422:
193 case AV_PIX_FMT_UYVY422:
194 case AV_PIX_FMT_YUV422P:
195 case AV_PIX_FMT_YUV440P:
196 case AV_PIX_FMT_YUV444P:
197 case AV_PIX_FMT_GBRP:
198 case AV_PIX_FMT_GRAY8:
199 case AV_PIX_FMT_GRAY16BE:
200 case AV_PIX_FMT_GRAY16LE:
201 case AV_PIX_FMT_YUVJ420P:
202 case AV_PIX_FMT_YUVJ422P:
203 case AV_PIX_FMT_YUVJ440P:
204 case AV_PIX_FMT_YUVJ444P:
205 case AV_PIX_FMT_YUVA420P:
206 case AV_PIX_FMT_YUVA422P:
207 case AV_PIX_FMT_YUVA444P:
208 case AV_PIX_FMT_YUV420P9LE:
209 case AV_PIX_FMT_YUV420P9BE:
210 case AV_PIX_FMT_YUV420P10LE:
211 case AV_PIX_FMT_YUV420P10BE:
212 case AV_PIX_FMT_YUV422P9LE:
213 case AV_PIX_FMT_YUV422P9BE:
214 case AV_PIX_FMT_YUV422P10LE:
215 case AV_PIX_FMT_YUV422P10BE:
216 case AV_PIX_FMT_YUVA422P10LE:
217 case AV_PIX_FMT_YUVA422P10BE:
218 case AV_PIX_FMT_YUV444P9LE:
219 case AV_PIX_FMT_YUV444P9BE:
220 case AV_PIX_FMT_YUV444P10LE:
221 case AV_PIX_FMT_YUV444P10BE:
222 case AV_PIX_FMT_YUVA444P10LE:
223 case AV_PIX_FMT_YUVA444P10BE:
224 case AV_PIX_FMT_GBRP9LE:
225 case AV_PIX_FMT_GBRP9BE:
226 case AV_PIX_FMT_GBRP10LE:
227 case AV_PIX_FMT_GBRP10BE:
228 w_align = 16; //FIXME assume 16 pixel per macroblock
229 h_align = 16 * 2; // interlaced needs 2 macroblocks height
231 case AV_PIX_FMT_YUV411P:
232 case AV_PIX_FMT_UYYVYY411:
236 case AV_PIX_FMT_YUV410P:
237 if (s->codec_id == AV_CODEC_ID_SVQ1) {
241 case AV_PIX_FMT_RGB555:
242 if (s->codec_id == AV_CODEC_ID_RPZA) {
246 case AV_PIX_FMT_PAL8:
247 case AV_PIX_FMT_BGR8:
248 case AV_PIX_FMT_RGB8:
249 if (s->codec_id == AV_CODEC_ID_SMC) {
254 case AV_PIX_FMT_BGR24:
255 if ((s->codec_id == AV_CODEC_ID_MSZH) ||
256 (s->codec_id == AV_CODEC_ID_ZLIB)) {
267 *width = FFALIGN(*width, w_align);
268 *height = FFALIGN(*height, h_align);
269 if (s->codec_id == AV_CODEC_ID_H264)
270 // some of the optimized chroma MC reads one line too much
273 for (i = 0; i < 4; i++)
274 linesize_align[i] = STRIDE_ALIGN;
277 void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height)
279 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(s->pix_fmt);
280 int chroma_shift = desc->log2_chroma_w;
281 int linesize_align[AV_NUM_DATA_POINTERS];
284 avcodec_align_dimensions2(s, width, height, linesize_align);
285 align = FFMAX(linesize_align[0], linesize_align[3]);
286 linesize_align[1] <<= chroma_shift;
287 linesize_align[2] <<= chroma_shift;
288 align = FFMAX3(align, linesize_align[1], linesize_align[2]);
289 *width = FFALIGN(*width, align);
292 int avcodec_fill_audio_frame(AVFrame *frame, int nb_channels,
293 enum AVSampleFormat sample_fmt, const uint8_t *buf,
294 int buf_size, int align)
296 int ch, planar, needed_size, ret = 0;
298 needed_size = av_samples_get_buffer_size(NULL, nb_channels,
299 frame->nb_samples, sample_fmt,
301 if (buf_size < needed_size)
302 return AVERROR(EINVAL);
304 planar = av_sample_fmt_is_planar(sample_fmt);
305 if (planar && nb_channels > AV_NUM_DATA_POINTERS) {
306 if (!(frame->extended_data = av_mallocz(nb_channels *
307 sizeof(*frame->extended_data))))
308 return AVERROR(ENOMEM);
310 frame->extended_data = frame->data;
313 if ((ret = av_samples_fill_arrays(frame->extended_data, &frame->linesize[0],
314 buf, nb_channels, frame->nb_samples,
315 sample_fmt, align)) < 0) {
316 if (frame->extended_data != frame->data)
317 av_free(frame->extended_data);
320 if (frame->extended_data != frame->data) {
321 for (ch = 0; ch < AV_NUM_DATA_POINTERS; ch++)
322 frame->data[ch] = frame->extended_data[ch];
328 static int update_frame_pool(AVCodecContext *avctx, AVFrame *frame)
330 FramePool *pool = avctx->internal->pool;
333 switch (avctx->codec_type) {
334 case AVMEDIA_TYPE_VIDEO: {
337 int w = frame->width;
338 int h = frame->height;
339 int tmpsize, unaligned;
341 if (pool->format == frame->format &&
342 pool->width == frame->width && pool->height == frame->height)
345 avcodec_align_dimensions2(avctx, &w, &h, pool->stride_align);
347 if (!(avctx->flags & CODEC_FLAG_EMU_EDGE)) {
353 // NOTE: do not align linesizes individually, this breaks e.g. assumptions
354 // that linesize[0] == 2*linesize[1] in the MPEG-encoder for 4:2:2
355 av_image_fill_linesizes(picture.linesize, avctx->pix_fmt, w);
356 // increase alignment of w for next try (rhs gives the lowest bit set in w)
360 for (i = 0; i < 4; i++)
361 unaligned |= picture.linesize[i] % pool->stride_align[i];
364 tmpsize = av_image_fill_pointers(picture.data, avctx->pix_fmt, h,
365 NULL, picture.linesize);
369 for (i = 0; i < 3 && picture.data[i + 1]; i++)
370 size[i] = picture.data[i + 1] - picture.data[i];
371 size[i] = tmpsize - (picture.data[i] - picture.data[0]);
373 for (i = 0; i < 4; i++) {
374 av_buffer_pool_uninit(&pool->pools[i]);
375 pool->linesize[i] = picture.linesize[i];
377 pool->pools[i] = av_buffer_pool_init(size[i] + 16, NULL);
378 if (!pool->pools[i]) {
379 ret = AVERROR(ENOMEM);
384 pool->format = frame->format;
385 pool->width = frame->width;
386 pool->height = frame->height;
390 case AVMEDIA_TYPE_AUDIO: {
391 int ch = av_get_channel_layout_nb_channels(frame->channel_layout);
392 int planar = av_sample_fmt_is_planar(frame->format);
393 int planes = planar ? ch : 1;
395 if (pool->format == frame->format && pool->planes == planes &&
396 pool->channels == ch && frame->nb_samples == pool->samples)
399 av_buffer_pool_uninit(&pool->pools[0]);
400 ret = av_samples_get_buffer_size(&pool->linesize[0], ch,
401 frame->nb_samples, frame->format, 0);
405 pool->pools[0] = av_buffer_pool_init(pool->linesize[0], NULL);
406 if (!pool->pools[0]) {
407 ret = AVERROR(ENOMEM);
411 pool->format = frame->format;
412 pool->planes = planes;
414 pool->samples = frame->nb_samples;
417 default: av_assert0(0);
421 for (i = 0; i < 4; i++)
422 av_buffer_pool_uninit(&pool->pools[i]);
424 pool->planes = pool->channels = pool->samples = 0;
425 pool->width = pool->height = 0;
429 static int audio_get_buffer(AVCodecContext *avctx, AVFrame *frame)
431 FramePool *pool = avctx->internal->pool;
432 int planes = pool->planes;
435 frame->linesize[0] = pool->linesize[0];
437 if (planes > AV_NUM_DATA_POINTERS) {
438 frame->extended_data = av_mallocz(planes * sizeof(*frame->extended_data));
439 frame->nb_extended_buf = planes - AV_NUM_DATA_POINTERS;
440 frame->extended_buf = av_mallocz(frame->nb_extended_buf *
441 sizeof(*frame->extended_buf));
442 if (!frame->extended_data || !frame->extended_buf) {
443 av_freep(&frame->extended_data);
444 av_freep(&frame->extended_buf);
445 return AVERROR(ENOMEM);
448 frame->extended_data = frame->data;
450 for (i = 0; i < FFMIN(planes, AV_NUM_DATA_POINTERS); i++) {
451 frame->buf[i] = av_buffer_pool_get(pool->pools[0]);
454 frame->extended_data[i] = frame->data[i] = frame->buf[i]->data;
456 for (i = 0; i < frame->nb_extended_buf; i++) {
457 frame->extended_buf[i] = av_buffer_pool_get(pool->pools[0]);
458 if (!frame->extended_buf[i])
460 frame->extended_data[i + AV_NUM_DATA_POINTERS] = frame->extended_buf[i]->data;
463 if (avctx->debug & FF_DEBUG_BUFFERS)
464 av_log(avctx, AV_LOG_DEBUG, "default_get_buffer called on frame %p", frame);
468 av_frame_unref(frame);
469 return AVERROR(ENOMEM);
472 static int video_get_buffer(AVCodecContext *s, AVFrame *pic)
474 FramePool *pool = s->internal->pool;
475 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pic->format);
476 int pixel_size = desc->comp[0].step_minus1 + 1;
477 int h_chroma_shift, v_chroma_shift;
480 if (pic->data[0] != NULL) {
481 av_log(s, AV_LOG_ERROR, "pic->data[0]!=NULL in avcodec_default_get_buffer\n");
485 memset(pic->data, 0, sizeof(pic->data));
486 pic->extended_data = pic->data;
488 av_pix_fmt_get_chroma_sub_sample(s->pix_fmt, &h_chroma_shift, &v_chroma_shift);
490 for (i = 0; i < 4 && pool->pools[i]; i++) {
491 const int h_shift = i == 0 ? 0 : h_chroma_shift;
492 const int v_shift = i == 0 ? 0 : v_chroma_shift;
494 pic->linesize[i] = pool->linesize[i];
496 pic->buf[i] = av_buffer_pool_get(pool->pools[i]);
500 // no edge if EDGE EMU or not planar YUV
501 if ((s->flags & CODEC_FLAG_EMU_EDGE) || !pool->pools[2])
502 pic->data[i] = pic->buf[i]->data;
504 pic->data[i] = pic->buf[i]->data +
505 FFALIGN((pic->linesize[i] * EDGE_WIDTH >> v_shift) +
506 (pixel_size * EDGE_WIDTH >> h_shift), pool->stride_align[i]);
509 for (; i < AV_NUM_DATA_POINTERS; i++) {
511 pic->linesize[i] = 0;
513 if (pic->data[1] && !pic->data[2])
514 avpriv_set_systematic_pal2((uint32_t *)pic->data[1], s->pix_fmt);
516 if (s->debug & FF_DEBUG_BUFFERS)
517 av_log(s, AV_LOG_DEBUG, "default_get_buffer called on pic %p\n", pic);
522 return AVERROR(ENOMEM);
525 int avcodec_default_get_buffer2(AVCodecContext *avctx, AVFrame *frame, int flags)
529 if ((ret = update_frame_pool(avctx, frame)) < 0)
532 #if FF_API_GET_BUFFER
533 FF_DISABLE_DEPRECATION_WARNINGS
534 frame->type = FF_BUFFER_TYPE_INTERNAL;
535 FF_ENABLE_DEPRECATION_WARNINGS
538 switch (avctx->codec_type) {
539 case AVMEDIA_TYPE_VIDEO:
540 return video_get_buffer(avctx, frame);
541 case AVMEDIA_TYPE_AUDIO:
542 return audio_get_buffer(avctx, frame);
548 #if FF_API_GET_BUFFER
549 FF_DISABLE_DEPRECATION_WARNINGS
550 int avcodec_default_get_buffer(AVCodecContext *avctx, AVFrame *frame)
552 return avcodec_default_get_buffer2(avctx, frame, 0);
555 typedef struct CompatReleaseBufPriv {
556 AVCodecContext avctx;
558 } CompatReleaseBufPriv;
560 static void compat_free_buffer(void *opaque, uint8_t *data)
562 CompatReleaseBufPriv *priv = opaque;
563 if (priv->avctx.release_buffer)
564 priv->avctx.release_buffer(&priv->avctx, &priv->frame);
568 static void compat_release_buffer(void *opaque, uint8_t *data)
570 AVBufferRef *buf = opaque;
571 av_buffer_unref(&buf);
573 FF_ENABLE_DEPRECATION_WARNINGS
576 int ff_decode_frame_props(AVCodecContext *avctx, AVFrame *frame)
578 AVPacket *pkt = avctx->internal->pkt;
581 AVFrameSideData *frame_sd;
584 frame->reordered_opaque = avctx->reordered_opaque;
586 frame->pkt_pts = AV_NOPTS_VALUE;
590 frame->pkt_pts = pkt->pts;
592 /* copy the replaygain data to the output frame */
593 packet_sd = av_packet_get_side_data(pkt, AV_PKT_DATA_REPLAYGAIN, &size);
595 frame_sd = av_frame_new_side_data(frame, AV_FRAME_DATA_REPLAYGAIN, size);
597 return AVERROR(ENOMEM);
599 memcpy(frame_sd->data, packet_sd, size);
605 int ff_get_buffer(AVCodecContext *avctx, AVFrame *frame, int flags)
607 const AVHWAccel *hwaccel = avctx->hwaccel;
608 int override_dimensions = 1;
611 switch (avctx->codec_type) {
612 case AVMEDIA_TYPE_VIDEO:
613 if (frame->width <= 0 || frame->height <= 0) {
614 frame->width = FFMAX(avctx->width, avctx->coded_width);
615 frame->height = FFMAX(avctx->height, avctx->coded_height);
616 override_dimensions = 0;
618 if (frame->format < 0)
619 frame->format = avctx->pix_fmt;
620 if (!frame->sample_aspect_ratio.num)
621 frame->sample_aspect_ratio = avctx->sample_aspect_ratio;
623 if ((ret = av_image_check_size(avctx->width, avctx->height, 0, avctx)) < 0)
626 case AVMEDIA_TYPE_AUDIO:
627 if (!frame->sample_rate)
628 frame->sample_rate = avctx->sample_rate;
629 if (frame->format < 0)
630 frame->format = avctx->sample_fmt;
631 if (!frame->channel_layout) {
632 if (avctx->channel_layout) {
633 if (av_get_channel_layout_nb_channels(avctx->channel_layout) !=
635 av_log(avctx, AV_LOG_ERROR, "Inconsistent channel "
637 return AVERROR(EINVAL);
640 frame->channel_layout = avctx->channel_layout;
642 if (avctx->channels > FF_SANE_NB_CHANNELS) {
643 av_log(avctx, AV_LOG_ERROR, "Too many channels: %d.\n",
645 return AVERROR(ENOSYS);
648 frame->channel_layout = av_get_default_channel_layout(avctx->channels);
649 if (!frame->channel_layout)
650 frame->channel_layout = (1ULL << avctx->channels) - 1;
654 default: return AVERROR(EINVAL);
657 ret = ff_decode_frame_props(avctx, frame);
661 if (hwaccel && hwaccel->alloc_frame) {
662 ret = hwaccel->alloc_frame(avctx, frame);
666 #if FF_API_GET_BUFFER
667 FF_DISABLE_DEPRECATION_WARNINGS
669 * Wrap an old get_buffer()-allocated buffer in an bunch of AVBuffers.
670 * We wrap each plane in its own AVBuffer. Each of those has a reference to
671 * a dummy AVBuffer as its private data, unreffing it on free.
672 * When all the planes are freed, the dummy buffer's free callback calls
675 if (avctx->get_buffer) {
676 CompatReleaseBufPriv *priv = NULL;
677 AVBufferRef *dummy_buf = NULL;
680 if (flags & AV_GET_BUFFER_FLAG_REF)
681 frame->reference = 1;
683 ret = avctx->get_buffer(avctx, frame);
687 /* return if the buffers are already set up
688 * this would happen e.g. when a custom get_buffer() calls
689 * avcodec_default_get_buffer
694 priv = av_mallocz(sizeof(*priv));
696 ret = AVERROR(ENOMEM);
699 priv->avctx = *avctx;
700 priv->frame = *frame;
702 dummy_buf = av_buffer_create(NULL, 0, compat_free_buffer, priv, 0);
704 ret = AVERROR(ENOMEM);
708 #define WRAP_PLANE(ref_out, data, data_size) \
710 AVBufferRef *dummy_ref = av_buffer_ref(dummy_buf); \
712 ret = AVERROR(ENOMEM); \
715 ref_out = av_buffer_create(data, data_size, compat_release_buffer, \
718 av_frame_unref(frame); \
719 ret = AVERROR(ENOMEM); \
724 if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
725 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(frame->format);
727 planes = av_pix_fmt_count_planes(frame->format);
728 /* workaround for AVHWAccel plane count of 0, buf[0] is used as
729 check for allocated buffers: make libavcodec happy */
730 if (desc && desc->flags & AV_PIX_FMT_FLAG_HWACCEL)
732 if (!desc || planes <= 0) {
733 ret = AVERROR(EINVAL);
737 for (i = 0; i < planes; i++) {
738 int v_shift = (i == 1 || i == 2) ? desc->log2_chroma_h : 0;
739 int plane_size = (frame->height >> v_shift) * frame->linesize[i];
741 WRAP_PLANE(frame->buf[i], frame->data[i], plane_size);
744 int planar = av_sample_fmt_is_planar(frame->format);
745 planes = planar ? avctx->channels : 1;
747 if (planes > FF_ARRAY_ELEMS(frame->buf)) {
748 frame->nb_extended_buf = planes - FF_ARRAY_ELEMS(frame->buf);
749 frame->extended_buf = av_malloc(sizeof(*frame->extended_buf) *
750 frame->nb_extended_buf);
751 if (!frame->extended_buf) {
752 ret = AVERROR(ENOMEM);
757 for (i = 0; i < FFMIN(planes, FF_ARRAY_ELEMS(frame->buf)); i++)
758 WRAP_PLANE(frame->buf[i], frame->extended_data[i], frame->linesize[0]);
760 for (i = 0; i < frame->nb_extended_buf; i++)
761 WRAP_PLANE(frame->extended_buf[i],
762 frame->extended_data[i + FF_ARRAY_ELEMS(frame->buf)],
766 av_buffer_unref(&dummy_buf);
768 frame->width = avctx->width;
769 frame->height = avctx->height;
774 avctx->release_buffer(avctx, frame);
776 av_buffer_unref(&dummy_buf);
779 FF_ENABLE_DEPRECATION_WARNINGS
782 ret = avctx->get_buffer2(avctx, frame, flags);
785 if (avctx->codec_type == AVMEDIA_TYPE_VIDEO && !override_dimensions) {
786 frame->width = avctx->width;
787 frame->height = avctx->height;
793 int ff_reget_buffer(AVCodecContext *avctx, AVFrame *frame)
798 av_assert0(avctx->codec_type == AVMEDIA_TYPE_VIDEO);
801 return ff_get_buffer(avctx, frame, AV_GET_BUFFER_FLAG_REF);
803 if (av_frame_is_writable(frame))
804 return ff_decode_frame_props(avctx, frame);
806 tmp = av_frame_alloc();
808 return AVERROR(ENOMEM);
810 av_frame_move_ref(tmp, frame);
812 ret = ff_get_buffer(avctx, frame, AV_GET_BUFFER_FLAG_REF);
818 av_frame_copy(frame, tmp);
824 #if FF_API_GET_BUFFER
825 void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic)
830 int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic)
837 int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2), void *arg, int *ret, int count, int size)
841 for (i = 0; i < count; i++) {
842 int r = func(c, (char *)arg + i * size);
849 int avcodec_default_execute2(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2, int jobnr, int threadnr), void *arg, int *ret, int count)
853 for (i = 0; i < count; i++) {
854 int r = func(c, arg, i, 0);
861 static int is_hwaccel_pix_fmt(enum AVPixelFormat pix_fmt)
863 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
864 return desc->flags & AV_PIX_FMT_FLAG_HWACCEL;
867 enum AVPixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum AVPixelFormat *fmt)
869 while (*fmt != AV_PIX_FMT_NONE && is_hwaccel_pix_fmt(*fmt))
874 static AVHWAccel *find_hwaccel(enum AVCodecID codec_id,
875 enum AVPixelFormat pix_fmt)
877 AVHWAccel *hwaccel = NULL;
879 while ((hwaccel = av_hwaccel_next(hwaccel)))
880 if (hwaccel->id == codec_id
881 && hwaccel->pix_fmt == pix_fmt)
887 int ff_get_format(AVCodecContext *avctx, const enum AVPixelFormat *fmt)
889 const AVPixFmtDescriptor *desc;
890 enum AVPixelFormat ret = avctx->get_format(avctx, fmt);
892 desc = av_pix_fmt_desc_get(ret);
894 return AV_PIX_FMT_NONE;
896 if (avctx->hwaccel && avctx->hwaccel->uninit)
897 avctx->hwaccel->uninit(avctx);
898 av_freep(&avctx->internal->hwaccel_priv_data);
899 avctx->hwaccel = NULL;
901 if (desc->flags & AV_PIX_FMT_FLAG_HWACCEL) {
905 hwaccel = find_hwaccel(avctx->codec_id, ret);
907 av_log(avctx, AV_LOG_ERROR,
908 "Could not find an AVHWAccel for the pixel format: %s",
910 return AV_PIX_FMT_NONE;
913 if (hwaccel->priv_data_size) {
914 avctx->internal->hwaccel_priv_data = av_mallocz(hwaccel->priv_data_size);
915 if (!avctx->internal->hwaccel_priv_data)
916 return AV_PIX_FMT_NONE;
920 err = hwaccel->init(avctx);
922 av_freep(&avctx->internal->hwaccel_priv_data);
923 return AV_PIX_FMT_NONE;
926 avctx->hwaccel = hwaccel;
932 #if FF_API_AVFRAME_LAVC
933 void avcodec_get_frame_defaults(AVFrame *frame)
935 if (frame->extended_data != frame->data)
936 av_freep(&frame->extended_data);
938 memset(frame, 0, sizeof(AVFrame));
940 frame->pts = AV_NOPTS_VALUE;
941 frame->key_frame = 1;
942 frame->sample_aspect_ratio = (AVRational) {0, 1 };
943 frame->format = -1; /* unknown */
944 frame->extended_data = frame->data;
947 AVFrame *avcodec_alloc_frame(void)
949 AVFrame *frame = av_mallocz(sizeof(AVFrame));
954 FF_DISABLE_DEPRECATION_WARNINGS
955 avcodec_get_frame_defaults(frame);
956 FF_ENABLE_DEPRECATION_WARNINGS
961 void avcodec_free_frame(AVFrame **frame)
963 av_frame_free(frame);
967 int attribute_align_arg avcodec_open2(AVCodecContext *avctx, const AVCodec *codec, AVDictionary **options)
970 AVDictionary *tmp = NULL;
972 if (avcodec_is_open(avctx))
975 if ((!codec && !avctx->codec)) {
976 av_log(avctx, AV_LOG_ERROR, "No codec provided to avcodec_open2().\n");
977 return AVERROR(EINVAL);
979 if ((codec && avctx->codec && codec != avctx->codec)) {
980 av_log(avctx, AV_LOG_ERROR, "This AVCodecContext was allocated for %s, "
981 "but %s passed to avcodec_open2().\n", avctx->codec->name, codec->name);
982 return AVERROR(EINVAL);
985 codec = avctx->codec;
987 if (avctx->extradata_size < 0 || avctx->extradata_size >= FF_MAX_EXTRADATA_SIZE)
988 return AVERROR(EINVAL);
991 av_dict_copy(&tmp, *options, 0);
993 /* If there is a user-supplied mutex locking routine, call it. */
995 if ((*lockmgr_cb)(&codec_mutex, AV_LOCK_OBTAIN))
999 entangled_thread_counter++;
1000 if (entangled_thread_counter != 1) {
1001 av_log(avctx, AV_LOG_ERROR, "insufficient thread locking around avcodec_open/close()\n");
1006 avctx->internal = av_mallocz(sizeof(AVCodecInternal));
1007 if (!avctx->internal) {
1008 ret = AVERROR(ENOMEM);
1012 avctx->internal->pool = av_mallocz(sizeof(*avctx->internal->pool));
1013 if (!avctx->internal->pool) {
1014 ret = AVERROR(ENOMEM);
1018 avctx->internal->to_free = av_frame_alloc();
1019 if (!avctx->internal->to_free) {
1020 ret = AVERROR(ENOMEM);
1024 if (codec->priv_data_size > 0) {
1025 if (!avctx->priv_data) {
1026 avctx->priv_data = av_mallocz(codec->priv_data_size);
1027 if (!avctx->priv_data) {
1028 ret = AVERROR(ENOMEM);
1031 if (codec->priv_class) {
1032 *(const AVClass **)avctx->priv_data = codec->priv_class;
1033 av_opt_set_defaults(avctx->priv_data);
1036 if (codec->priv_class && (ret = av_opt_set_dict(avctx->priv_data, &tmp)) < 0)
1039 avctx->priv_data = NULL;
1041 if ((ret = av_opt_set_dict(avctx, &tmp)) < 0)
1044 if (avctx->coded_width && avctx->coded_height && !avctx->width && !avctx->height)
1045 ret = ff_set_dimensions(avctx, avctx->coded_width, avctx->coded_height);
1046 else if (avctx->width && avctx->height)
1047 ret = ff_set_dimensions(avctx, avctx->width, avctx->height);
1051 if ((avctx->coded_width || avctx->coded_height || avctx->width || avctx->height)
1052 && ( av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx) < 0
1053 || av_image_check_size(avctx->width, avctx->height, 0, avctx) < 0)) {
1054 av_log(avctx, AV_LOG_WARNING, "ignoring invalid width/height values\n");
1055 ff_set_dimensions(avctx, 0, 0);
1058 /* if the decoder init function was already called previously,
1059 * free the already allocated subtitle_header before overwriting it */
1060 if (av_codec_is_decoder(codec))
1061 av_freep(&avctx->subtitle_header);
1063 if (avctx->channels > FF_SANE_NB_CHANNELS) {
1064 ret = AVERROR(EINVAL);
1068 avctx->codec = codec;
1069 if ((avctx->codec_type == AVMEDIA_TYPE_UNKNOWN || avctx->codec_type == codec->type) &&
1070 avctx->codec_id == AV_CODEC_ID_NONE) {
1071 avctx->codec_type = codec->type;
1072 avctx->codec_id = codec->id;
1074 if (avctx->codec_id != codec->id || (avctx->codec_type != codec->type
1075 && avctx->codec_type != AVMEDIA_TYPE_ATTACHMENT)) {
1076 av_log(avctx, AV_LOG_ERROR, "codec type or id mismatches\n");
1077 ret = AVERROR(EINVAL);
1080 avctx->frame_number = 0;
1082 if (avctx->codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
1083 avctx->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
1084 ret = AVERROR_EXPERIMENTAL;
1088 if (avctx->codec_type == AVMEDIA_TYPE_AUDIO &&
1089 (!avctx->time_base.num || !avctx->time_base.den)) {
1090 avctx->time_base.num = 1;
1091 avctx->time_base.den = avctx->sample_rate;
1095 ret = ff_thread_init(avctx);
1100 if (!HAVE_THREADS && !(codec->capabilities & CODEC_CAP_AUTO_THREADS))
1101 avctx->thread_count = 1;
1103 if (av_codec_is_encoder(avctx->codec)) {
1105 if (avctx->codec->sample_fmts) {
1106 for (i = 0; avctx->codec->sample_fmts[i] != AV_SAMPLE_FMT_NONE; i++) {
1107 if (avctx->sample_fmt == avctx->codec->sample_fmts[i])
1109 if (avctx->channels == 1 &&
1110 av_get_planar_sample_fmt(avctx->sample_fmt) ==
1111 av_get_planar_sample_fmt(avctx->codec->sample_fmts[i])) {
1112 avctx->sample_fmt = avctx->codec->sample_fmts[i];
1116 if (avctx->codec->sample_fmts[i] == AV_SAMPLE_FMT_NONE) {
1117 av_log(avctx, AV_LOG_ERROR, "Specified sample_fmt is not supported.\n");
1118 ret = AVERROR(EINVAL);
1122 if (avctx->codec->pix_fmts) {
1123 for (i = 0; avctx->codec->pix_fmts[i] != AV_PIX_FMT_NONE; i++)
1124 if (avctx->pix_fmt == avctx->codec->pix_fmts[i])
1126 if (avctx->codec->pix_fmts[i] == AV_PIX_FMT_NONE) {
1127 av_log(avctx, AV_LOG_ERROR, "Specified pix_fmt is not supported\n");
1128 ret = AVERROR(EINVAL);
1132 if (avctx->codec->supported_samplerates) {
1133 for (i = 0; avctx->codec->supported_samplerates[i] != 0; i++)
1134 if (avctx->sample_rate == avctx->codec->supported_samplerates[i])
1136 if (avctx->codec->supported_samplerates[i] == 0) {
1137 av_log(avctx, AV_LOG_ERROR, "Specified sample_rate is not supported\n");
1138 ret = AVERROR(EINVAL);
1142 if (avctx->codec->channel_layouts) {
1143 if (!avctx->channel_layout) {
1144 av_log(avctx, AV_LOG_WARNING, "channel_layout not specified\n");
1146 for (i = 0; avctx->codec->channel_layouts[i] != 0; i++)
1147 if (avctx->channel_layout == avctx->codec->channel_layouts[i])
1149 if (avctx->codec->channel_layouts[i] == 0) {
1150 av_log(avctx, AV_LOG_ERROR, "Specified channel_layout is not supported\n");
1151 ret = AVERROR(EINVAL);
1156 if (avctx->channel_layout && avctx->channels) {
1157 if (av_get_channel_layout_nb_channels(avctx->channel_layout) != avctx->channels) {
1158 av_log(avctx, AV_LOG_ERROR, "channel layout does not match number of channels\n");
1159 ret = AVERROR(EINVAL);
1162 } else if (avctx->channel_layout) {
1163 avctx->channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
1166 if (!avctx->rc_initial_buffer_occupancy)
1167 avctx->rc_initial_buffer_occupancy = avctx->rc_buffer_size * 3 / 4;
1170 if (avctx->codec->init && !(avctx->active_thread_type & FF_THREAD_FRAME)) {
1171 ret = avctx->codec->init(avctx);
1177 if (av_codec_is_decoder(avctx->codec)) {
1178 /* validate channel layout from the decoder */
1179 if (avctx->channel_layout) {
1180 int channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
1181 if (!avctx->channels)
1182 avctx->channels = channels;
1183 else if (channels != avctx->channels) {
1184 av_log(avctx, AV_LOG_WARNING,
1185 "channel layout does not match number of channels\n");
1186 avctx->channel_layout = 0;
1189 if (avctx->channels && avctx->channels < 0 ||
1190 avctx->channels > FF_SANE_NB_CHANNELS) {
1191 ret = AVERROR(EINVAL);
1196 entangled_thread_counter--;
1198 /* Release any user-supplied mutex. */
1200 (*lockmgr_cb)(&codec_mutex, AV_LOCK_RELEASE);
1203 av_dict_free(options);
1210 av_freep(&avctx->priv_data);
1211 if (avctx->internal) {
1212 av_frame_free(&avctx->internal->to_free);
1213 av_freep(&avctx->internal->pool);
1215 av_freep(&avctx->internal);
1216 avctx->codec = NULL;
1220 int ff_alloc_packet(AVPacket *avpkt, int size)
1222 if (size > INT_MAX - FF_INPUT_BUFFER_PADDING_SIZE)
1223 return AVERROR(EINVAL);
1226 AVBufferRef *buf = avpkt->buf;
1227 #if FF_API_DESTRUCT_PACKET
1228 FF_DISABLE_DEPRECATION_WARNINGS
1229 void *destruct = avpkt->destruct;
1230 FF_ENABLE_DEPRECATION_WARNINGS
1233 if (avpkt->size < size)
1234 return AVERROR(EINVAL);
1236 av_init_packet(avpkt);
1237 #if FF_API_DESTRUCT_PACKET
1238 FF_DISABLE_DEPRECATION_WARNINGS
1239 avpkt->destruct = destruct;
1240 FF_ENABLE_DEPRECATION_WARNINGS
1246 return av_new_packet(avpkt, size);
1251 * Pad last frame with silence.
1253 static int pad_last_frame(AVCodecContext *s, AVFrame **dst, const AVFrame *src)
1255 AVFrame *frame = NULL;
1258 if (!(frame = av_frame_alloc()))
1259 return AVERROR(ENOMEM);
1261 frame->format = src->format;
1262 frame->channel_layout = src->channel_layout;
1263 frame->nb_samples = s->frame_size;
1264 ret = av_frame_get_buffer(frame, 32);
1268 ret = av_frame_copy_props(frame, src);
1272 if ((ret = av_samples_copy(frame->extended_data, src->extended_data, 0, 0,
1273 src->nb_samples, s->channels, s->sample_fmt)) < 0)
1275 if ((ret = av_samples_set_silence(frame->extended_data, src->nb_samples,
1276 frame->nb_samples - src->nb_samples,
1277 s->channels, s->sample_fmt)) < 0)
1285 av_frame_free(&frame);
1289 int attribute_align_arg avcodec_encode_audio2(AVCodecContext *avctx,
1291 const AVFrame *frame,
1292 int *got_packet_ptr)
1295 AVFrame *padded_frame = NULL;
1297 int user_packet = !!avpkt->data;
1299 *got_packet_ptr = 0;
1301 if (!(avctx->codec->capabilities & CODEC_CAP_DELAY) && !frame) {
1302 av_free_packet(avpkt);
1303 av_init_packet(avpkt);
1307 /* ensure that extended_data is properly set */
1308 if (frame && !frame->extended_data) {
1309 if (av_sample_fmt_is_planar(avctx->sample_fmt) &&
1310 avctx->channels > AV_NUM_DATA_POINTERS) {
1311 av_log(avctx, AV_LOG_ERROR, "Encoding to a planar sample format, "
1312 "with more than %d channels, but extended_data is not set.\n",
1313 AV_NUM_DATA_POINTERS);
1314 return AVERROR(EINVAL);
1316 av_log(avctx, AV_LOG_WARNING, "extended_data is not set.\n");
1319 tmp.extended_data = tmp.data;
1323 /* check for valid frame size */
1325 if (avctx->codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME) {
1326 if (frame->nb_samples > avctx->frame_size)
1327 return AVERROR(EINVAL);
1328 } else if (!(avctx->codec->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE)) {
1329 if (frame->nb_samples < avctx->frame_size &&
1330 !avctx->internal->last_audio_frame) {
1331 ret = pad_last_frame(avctx, &padded_frame, frame);
1335 frame = padded_frame;
1336 avctx->internal->last_audio_frame = 1;
1339 if (frame->nb_samples != avctx->frame_size) {
1340 ret = AVERROR(EINVAL);
1346 ret = avctx->codec->encode2(avctx, avpkt, frame, got_packet_ptr);
1348 if (*got_packet_ptr) {
1349 if (!(avctx->codec->capabilities & CODEC_CAP_DELAY)) {
1350 if (avpkt->pts == AV_NOPTS_VALUE)
1351 avpkt->pts = frame->pts;
1352 if (!avpkt->duration)
1353 avpkt->duration = ff_samples_to_time_base(avctx,
1356 avpkt->dts = avpkt->pts;
1361 if (!user_packet && avpkt->size) {
1362 ret = av_buffer_realloc(&avpkt->buf, avpkt->size);
1364 avpkt->data = avpkt->buf->data;
1367 avctx->frame_number++;
1370 if (ret < 0 || !*got_packet_ptr) {
1371 av_free_packet(avpkt);
1372 av_init_packet(avpkt);
1376 /* NOTE: if we add any audio encoders which output non-keyframe packets,
1377 * this needs to be moved to the encoders, but for now we can do it
1378 * here to simplify things */
1379 avpkt->flags |= AV_PKT_FLAG_KEY;
1382 av_frame_free(&padded_frame);
1387 int attribute_align_arg avcodec_encode_video2(AVCodecContext *avctx,
1389 const AVFrame *frame,
1390 int *got_packet_ptr)
1393 int user_packet = !!avpkt->data;
1395 *got_packet_ptr = 0;
1397 if (!(avctx->codec->capabilities & CODEC_CAP_DELAY) && !frame) {
1398 av_free_packet(avpkt);
1399 av_init_packet(avpkt);
1404 if (av_image_check_size(avctx->width, avctx->height, 0, avctx))
1405 return AVERROR(EINVAL);
1407 av_assert0(avctx->codec->encode2);
1409 ret = avctx->codec->encode2(avctx, avpkt, frame, got_packet_ptr);
1411 if (!*got_packet_ptr)
1413 else if (!(avctx->codec->capabilities & CODEC_CAP_DELAY))
1414 avpkt->pts = avpkt->dts = frame->pts;
1416 if (!user_packet && avpkt->size) {
1417 ret = av_buffer_realloc(&avpkt->buf, avpkt->size);
1419 avpkt->data = avpkt->buf->data;
1422 avctx->frame_number++;
1425 if (ret < 0 || !*got_packet_ptr)
1426 av_free_packet(avpkt);
1432 int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size,
1433 const AVSubtitle *sub)
1436 if (sub->start_display_time) {
1437 av_log(avctx, AV_LOG_ERROR, "start_display_time must be 0.\n");
1440 if (sub->num_rects == 0 || !sub->rects)
1442 ret = avctx->codec->encode_sub(avctx, buf, buf_size, sub);
1443 avctx->frame_number++;
1447 static int apply_param_change(AVCodecContext *avctx, AVPacket *avpkt)
1450 const uint8_t *data;
1453 data = av_packet_get_side_data(avpkt, AV_PKT_DATA_PARAM_CHANGE, &size);
1457 if (!(avctx->codec->capabilities & CODEC_CAP_PARAM_CHANGE)) {
1458 av_log(avctx, AV_LOG_ERROR, "This decoder does not support parameter "
1459 "changes, but PARAM_CHANGE side data was sent to it.\n");
1460 return AVERROR(EINVAL);
1466 flags = bytestream_get_le32(&data);
1469 if (flags & AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_COUNT) {
1472 avctx->channels = bytestream_get_le32(&data);
1475 if (flags & AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_LAYOUT) {
1478 avctx->channel_layout = bytestream_get_le64(&data);
1481 if (flags & AV_SIDE_DATA_PARAM_CHANGE_SAMPLE_RATE) {
1484 avctx->sample_rate = bytestream_get_le32(&data);
1487 if (flags & AV_SIDE_DATA_PARAM_CHANGE_DIMENSIONS) {
1490 avctx->width = bytestream_get_le32(&data);
1491 avctx->height = bytestream_get_le32(&data);
1493 ret = ff_set_dimensions(avctx, avctx->width, avctx->height);
1500 av_log(avctx, AV_LOG_ERROR, "PARAM_CHANGE side data too small.\n");
1501 return AVERROR_INVALIDDATA;
1504 static int unrefcount_frame(AVCodecInternal *avci, AVFrame *frame)
1508 /* move the original frame to our backup */
1509 av_frame_unref(avci->to_free);
1510 av_frame_move_ref(avci->to_free, frame);
1512 /* now copy everything except the AVBufferRefs back
1513 * note that we make a COPY of the side data, so calling av_frame_free() on
1514 * the caller's frame will work properly */
1515 ret = av_frame_copy_props(frame, avci->to_free);
1519 memcpy(frame->data, avci->to_free->data, sizeof(frame->data));
1520 memcpy(frame->linesize, avci->to_free->linesize, sizeof(frame->linesize));
1521 if (avci->to_free->extended_data != avci->to_free->data) {
1522 int planes = av_get_channel_layout_nb_channels(avci->to_free->channel_layout);
1523 int size = planes * sizeof(*frame->extended_data);
1526 av_frame_unref(frame);
1530 frame->extended_data = av_malloc(size);
1531 if (!frame->extended_data) {
1532 av_frame_unref(frame);
1533 return AVERROR(ENOMEM);
1535 memcpy(frame->extended_data, avci->to_free->extended_data,
1538 frame->extended_data = frame->data;
1540 frame->format = avci->to_free->format;
1541 frame->width = avci->to_free->width;
1542 frame->height = avci->to_free->height;
1543 frame->channel_layout = avci->to_free->channel_layout;
1544 frame->nb_samples = avci->to_free->nb_samples;
1549 int attribute_align_arg avcodec_decode_video2(AVCodecContext *avctx, AVFrame *picture,
1550 int *got_picture_ptr,
1553 AVCodecInternal *avci = avctx->internal;
1556 *got_picture_ptr = 0;
1557 if ((avctx->coded_width || avctx->coded_height) && av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx))
1560 avctx->internal->pkt = avpkt;
1561 ret = apply_param_change(avctx, avpkt);
1563 av_log(avctx, AV_LOG_ERROR, "Error applying parameter changes.\n");
1564 if (avctx->err_recognition & AV_EF_EXPLODE)
1568 av_frame_unref(picture);
1570 if ((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size || (avctx->active_thread_type & FF_THREAD_FRAME)) {
1571 if (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME)
1572 ret = ff_thread_decode_frame(avctx, picture, got_picture_ptr,
1575 ret = avctx->codec->decode(avctx, picture, got_picture_ptr,
1577 picture->pkt_dts = avpkt->dts;
1578 /* get_buffer is supposed to set frame parameters */
1579 if (!(avctx->codec->capabilities & CODEC_CAP_DR1)) {
1580 picture->sample_aspect_ratio = avctx->sample_aspect_ratio;
1581 picture->width = avctx->width;
1582 picture->height = avctx->height;
1583 picture->format = avctx->pix_fmt;
1587 emms_c(); //needed to avoid an emms_c() call before every return;
1589 if (*got_picture_ptr) {
1590 if (!avctx->refcounted_frames) {
1591 int err = unrefcount_frame(avci, picture);
1596 avctx->frame_number++;
1598 av_frame_unref(picture);
1605 int attribute_align_arg avcodec_decode_audio4(AVCodecContext *avctx,
1610 AVCodecInternal *avci = avctx->internal;
1615 avctx->internal->pkt = avpkt;
1617 if (!avpkt->data && avpkt->size) {
1618 av_log(avctx, AV_LOG_ERROR, "invalid packet: NULL data, size != 0\n");
1619 return AVERROR(EINVAL);
1622 ret = apply_param_change(avctx, avpkt);
1624 av_log(avctx, AV_LOG_ERROR, "Error applying parameter changes.\n");
1625 if (avctx->err_recognition & AV_EF_EXPLODE)
1629 av_frame_unref(frame);
1631 if ((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size) {
1632 ret = avctx->codec->decode(avctx, frame, got_frame_ptr, avpkt);
1633 if (ret >= 0 && *got_frame_ptr) {
1634 avctx->frame_number++;
1635 frame->pkt_dts = avpkt->dts;
1636 if (frame->format == AV_SAMPLE_FMT_NONE)
1637 frame->format = avctx->sample_fmt;
1639 if (!avctx->refcounted_frames) {
1640 int err = unrefcount_frame(avci, frame);
1645 av_frame_unref(frame);
1652 int avcodec_decode_subtitle2(AVCodecContext *avctx, AVSubtitle *sub,
1658 avctx->internal->pkt = avpkt;
1660 ret = avctx->codec->decode(avctx, sub, got_sub_ptr, avpkt);
1662 avctx->frame_number++;
1666 void avsubtitle_free(AVSubtitle *sub)
1670 for (i = 0; i < sub->num_rects; i++) {
1671 av_freep(&sub->rects[i]->pict.data[0]);
1672 av_freep(&sub->rects[i]->pict.data[1]);
1673 av_freep(&sub->rects[i]->pict.data[2]);
1674 av_freep(&sub->rects[i]->pict.data[3]);
1675 av_freep(&sub->rects[i]->text);
1676 av_freep(&sub->rects[i]->ass);
1677 av_freep(&sub->rects[i]);
1680 av_freep(&sub->rects);
1682 memset(sub, 0, sizeof(AVSubtitle));
1685 av_cold int avcodec_close(AVCodecContext *avctx)
1687 /* If there is a user-supplied mutex locking routine, call it. */
1689 if ((*lockmgr_cb)(&codec_mutex, AV_LOCK_OBTAIN))
1693 entangled_thread_counter++;
1694 if (entangled_thread_counter != 1) {
1695 av_log(avctx, AV_LOG_ERROR, "insufficient thread locking around avcodec_open/close()\n");
1696 entangled_thread_counter--;
1700 if (avcodec_is_open(avctx)) {
1701 FramePool *pool = avctx->internal->pool;
1703 if (HAVE_THREADS && avctx->internal->thread_ctx)
1704 ff_thread_free(avctx);
1705 if (avctx->codec && avctx->codec->close)
1706 avctx->codec->close(avctx);
1707 avctx->coded_frame = NULL;
1708 av_frame_free(&avctx->internal->to_free);
1709 for (i = 0; i < FF_ARRAY_ELEMS(pool->pools); i++)
1710 av_buffer_pool_uninit(&pool->pools[i]);
1711 av_freep(&avctx->internal->pool);
1713 if (avctx->hwaccel && avctx->hwaccel->uninit)
1714 avctx->hwaccel->uninit(avctx);
1715 av_freep(&avctx->internal->hwaccel_priv_data);
1717 av_freep(&avctx->internal);
1720 if (avctx->priv_data && avctx->codec && avctx->codec->priv_class)
1721 av_opt_free(avctx->priv_data);
1723 av_freep(&avctx->priv_data);
1724 if (av_codec_is_encoder(avctx->codec))
1725 av_freep(&avctx->extradata);
1726 avctx->codec = NULL;
1727 avctx->active_thread_type = 0;
1728 entangled_thread_counter--;
1730 /* Release any user-supplied mutex. */
1732 (*lockmgr_cb)(&codec_mutex, AV_LOCK_RELEASE);
1737 static AVCodec *find_encdec(enum AVCodecID id, int encoder)
1739 AVCodec *p, *experimental = NULL;
1742 if ((encoder ? av_codec_is_encoder(p) : av_codec_is_decoder(p)) &&
1744 if (p->capabilities & CODEC_CAP_EXPERIMENTAL && !experimental) {
1751 return experimental;
1754 AVCodec *avcodec_find_encoder(enum AVCodecID id)
1756 return find_encdec(id, 1);
1759 AVCodec *avcodec_find_encoder_by_name(const char *name)
1766 if (av_codec_is_encoder(p) && strcmp(name, p->name) == 0)
1773 AVCodec *avcodec_find_decoder(enum AVCodecID id)
1775 return find_encdec(id, 0);
1778 AVCodec *avcodec_find_decoder_by_name(const char *name)
1785 if (av_codec_is_decoder(p) && strcmp(name, p->name) == 0)
1792 static int get_bit_rate(AVCodecContext *ctx)
1795 int bits_per_sample;
1797 switch (ctx->codec_type) {
1798 case AVMEDIA_TYPE_VIDEO:
1799 case AVMEDIA_TYPE_DATA:
1800 case AVMEDIA_TYPE_SUBTITLE:
1801 case AVMEDIA_TYPE_ATTACHMENT:
1802 bit_rate = ctx->bit_rate;
1804 case AVMEDIA_TYPE_AUDIO:
1805 bits_per_sample = av_get_bits_per_sample(ctx->codec_id);
1806 bit_rate = bits_per_sample ? ctx->sample_rate * ctx->channels * bits_per_sample : ctx->bit_rate;
1815 size_t av_get_codec_tag_string(char *buf, size_t buf_size, unsigned int codec_tag)
1817 int i, len, ret = 0;
1819 #define TAG_PRINT(x) \
1820 (((x) >= '0' && (x) <= '9') || \
1821 ((x) >= 'a' && (x) <= 'z') || ((x) >= 'A' && (x) <= 'Z') || \
1822 ((x) == '.' || (x) == ' '))
1824 for (i = 0; i < 4; i++) {
1825 len = snprintf(buf, buf_size,
1826 TAG_PRINT(codec_tag & 0xFF) ? "%c" : "[%d]", codec_tag & 0xFF);
1828 buf_size = buf_size > len ? buf_size - len : 0;
1835 void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)
1837 const char *codec_name;
1838 const char *profile = NULL;
1842 AVRational display_aspect_ratio;
1847 p = avcodec_find_encoder(enc->codec_id);
1849 p = avcodec_find_decoder(enc->codec_id);
1852 codec_name = p->name;
1853 profile = av_get_profile_name(p, enc->profile);
1854 } else if (enc->codec_id == AV_CODEC_ID_MPEG2TS) {
1855 /* fake mpeg2 transport stream codec (currently not
1857 codec_name = "mpeg2ts";
1859 /* output avi tags */
1861 av_get_codec_tag_string(tag_buf, sizeof(tag_buf), enc->codec_tag);
1862 snprintf(buf1, sizeof(buf1), "%s / 0x%04X", tag_buf, enc->codec_tag);
1866 switch (enc->codec_type) {
1867 case AVMEDIA_TYPE_VIDEO:
1868 snprintf(buf, buf_size,
1870 codec_name, enc->mb_decision ? " (hq)" : "");
1872 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1874 if (enc->pix_fmt != AV_PIX_FMT_NONE) {
1875 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1877 av_get_pix_fmt_name(enc->pix_fmt));
1880 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1882 enc->width, enc->height);
1883 if (enc->sample_aspect_ratio.num) {
1884 av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
1885 enc->width * enc->sample_aspect_ratio.num,
1886 enc->height * enc->sample_aspect_ratio.den,
1888 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1889 " [PAR %d:%d DAR %d:%d]",
1890 enc->sample_aspect_ratio.num, enc->sample_aspect_ratio.den,
1891 display_aspect_ratio.num, display_aspect_ratio.den);
1893 if (av_log_get_level() >= AV_LOG_DEBUG) {
1894 int g = av_gcd(enc->time_base.num, enc->time_base.den);
1895 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1897 enc->time_base.num / g, enc->time_base.den / g);
1901 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1902 ", q=%d-%d", enc->qmin, enc->qmax);
1905 case AVMEDIA_TYPE_AUDIO:
1906 snprintf(buf, buf_size,
1910 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1912 if (enc->sample_rate) {
1913 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1914 ", %d Hz", enc->sample_rate);
1916 av_strlcat(buf, ", ", buf_size);
1917 av_get_channel_layout_string(buf + strlen(buf), buf_size - strlen(buf), enc->channels, enc->channel_layout);
1918 if (enc->sample_fmt != AV_SAMPLE_FMT_NONE) {
1919 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1920 ", %s", av_get_sample_fmt_name(enc->sample_fmt));
1923 case AVMEDIA_TYPE_DATA:
1924 snprintf(buf, buf_size, "Data: %s", codec_name);
1926 case AVMEDIA_TYPE_SUBTITLE:
1927 snprintf(buf, buf_size, "Subtitle: %s", codec_name);
1929 case AVMEDIA_TYPE_ATTACHMENT:
1930 snprintf(buf, buf_size, "Attachment: %s", codec_name);
1933 snprintf(buf, buf_size, "Invalid Codec type %d", enc->codec_type);
1937 if (enc->flags & CODEC_FLAG_PASS1)
1938 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1940 if (enc->flags & CODEC_FLAG_PASS2)
1941 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1944 bitrate = get_bit_rate(enc);
1946 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1947 ", %d kb/s", bitrate / 1000);
1951 const char *av_get_profile_name(const AVCodec *codec, int profile)
1954 if (profile == FF_PROFILE_UNKNOWN || !codec->profiles)
1957 for (p = codec->profiles; p->profile != FF_PROFILE_UNKNOWN; p++)
1958 if (p->profile == profile)
1964 unsigned avcodec_version(void)
1966 return LIBAVCODEC_VERSION_INT;
1969 const char *avcodec_configuration(void)
1971 return LIBAV_CONFIGURATION;
1974 const char *avcodec_license(void)
1976 #define LICENSE_PREFIX "libavcodec license: "
1977 return LICENSE_PREFIX LIBAV_LICENSE + sizeof(LICENSE_PREFIX) - 1;
1980 void avcodec_flush_buffers(AVCodecContext *avctx)
1982 if (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME)
1983 ff_thread_flush(avctx);
1984 else if (avctx->codec->flush)
1985 avctx->codec->flush(avctx);
1987 if (!avctx->refcounted_frames)
1988 av_frame_unref(avctx->internal->to_free);
1991 int av_get_exact_bits_per_sample(enum AVCodecID codec_id)
1994 case AV_CODEC_ID_ADPCM_CT:
1995 case AV_CODEC_ID_ADPCM_IMA_APC:
1996 case AV_CODEC_ID_ADPCM_IMA_EA_SEAD:
1997 case AV_CODEC_ID_ADPCM_IMA_WS:
1998 case AV_CODEC_ID_ADPCM_G722:
1999 case AV_CODEC_ID_ADPCM_YAMAHA:
2001 case AV_CODEC_ID_PCM_ALAW:
2002 case AV_CODEC_ID_PCM_MULAW:
2003 case AV_CODEC_ID_PCM_S8:
2004 case AV_CODEC_ID_PCM_U8:
2005 case AV_CODEC_ID_PCM_ZORK:
2007 case AV_CODEC_ID_PCM_S16BE:
2008 case AV_CODEC_ID_PCM_S16LE:
2009 case AV_CODEC_ID_PCM_S16LE_PLANAR:
2010 case AV_CODEC_ID_PCM_U16BE:
2011 case AV_CODEC_ID_PCM_U16LE:
2013 case AV_CODEC_ID_PCM_S24DAUD:
2014 case AV_CODEC_ID_PCM_S24BE:
2015 case AV_CODEC_ID_PCM_S24LE:
2016 case AV_CODEC_ID_PCM_S24LE_PLANAR:
2017 case AV_CODEC_ID_PCM_U24BE:
2018 case AV_CODEC_ID_PCM_U24LE:
2020 case AV_CODEC_ID_PCM_S32BE:
2021 case AV_CODEC_ID_PCM_S32LE:
2022 case AV_CODEC_ID_PCM_S32LE_PLANAR:
2023 case AV_CODEC_ID_PCM_U32BE:
2024 case AV_CODEC_ID_PCM_U32LE:
2025 case AV_CODEC_ID_PCM_F32BE:
2026 case AV_CODEC_ID_PCM_F32LE:
2028 case AV_CODEC_ID_PCM_F64BE:
2029 case AV_CODEC_ID_PCM_F64LE:
2036 int av_get_bits_per_sample(enum AVCodecID codec_id)
2039 case AV_CODEC_ID_ADPCM_SBPRO_2:
2041 case AV_CODEC_ID_ADPCM_SBPRO_3:
2043 case AV_CODEC_ID_ADPCM_SBPRO_4:
2044 case AV_CODEC_ID_ADPCM_IMA_WAV:
2045 case AV_CODEC_ID_ADPCM_IMA_QT:
2046 case AV_CODEC_ID_ADPCM_SWF:
2047 case AV_CODEC_ID_ADPCM_MS:
2050 return av_get_exact_bits_per_sample(codec_id);
2054 int av_get_audio_frame_duration(AVCodecContext *avctx, int frame_bytes)
2056 int id, sr, ch, ba, tag, bps;
2058 id = avctx->codec_id;
2059 sr = avctx->sample_rate;
2060 ch = avctx->channels;
2061 ba = avctx->block_align;
2062 tag = avctx->codec_tag;
2063 bps = av_get_exact_bits_per_sample(avctx->codec_id);
2065 /* codecs with an exact constant bits per sample */
2066 if (bps > 0 && ch > 0 && frame_bytes > 0)
2067 return (frame_bytes * 8) / (bps * ch);
2068 bps = avctx->bits_per_coded_sample;
2070 /* codecs with a fixed packet duration */
2072 case AV_CODEC_ID_ADPCM_ADX: return 32;
2073 case AV_CODEC_ID_ADPCM_IMA_QT: return 64;
2074 case AV_CODEC_ID_ADPCM_EA_XAS: return 128;
2075 case AV_CODEC_ID_AMR_NB:
2076 case AV_CODEC_ID_GSM:
2077 case AV_CODEC_ID_QCELP:
2078 case AV_CODEC_ID_RA_144:
2079 case AV_CODEC_ID_RA_288: return 160;
2080 case AV_CODEC_ID_IMC: return 256;
2081 case AV_CODEC_ID_AMR_WB:
2082 case AV_CODEC_ID_GSM_MS: return 320;
2083 case AV_CODEC_ID_MP1: return 384;
2084 case AV_CODEC_ID_ATRAC1: return 512;
2085 case AV_CODEC_ID_ATRAC3: return 1024;
2086 case AV_CODEC_ID_MP2:
2087 case AV_CODEC_ID_MUSEPACK7: return 1152;
2088 case AV_CODEC_ID_AC3: return 1536;
2092 /* calc from sample rate */
2093 if (id == AV_CODEC_ID_TTA)
2094 return 256 * sr / 245;
2097 /* calc from sample rate and channels */
2098 if (id == AV_CODEC_ID_BINKAUDIO_DCT)
2099 return (480 << (sr / 22050)) / ch;
2104 /* calc from block_align */
2105 if (id == AV_CODEC_ID_SIPR) {
2107 case 20: return 160;
2108 case 19: return 144;
2109 case 29: return 288;
2110 case 37: return 480;
2112 } else if (id == AV_CODEC_ID_ILBC) {
2114 case 38: return 160;
2115 case 50: return 240;
2120 if (frame_bytes > 0) {
2121 /* calc from frame_bytes only */
2122 if (id == AV_CODEC_ID_TRUESPEECH)
2123 return 240 * (frame_bytes / 32);
2124 if (id == AV_CODEC_ID_NELLYMOSER)
2125 return 256 * (frame_bytes / 64);
2128 /* calc from frame_bytes and bits_per_coded_sample */
2129 if (id == AV_CODEC_ID_ADPCM_G726)
2130 return frame_bytes * 8 / bps;
2134 /* calc from frame_bytes and channels */
2136 case AV_CODEC_ID_ADPCM_4XM:
2137 case AV_CODEC_ID_ADPCM_IMA_ISS:
2138 return (frame_bytes - 4 * ch) * 2 / ch;
2139 case AV_CODEC_ID_ADPCM_IMA_SMJPEG:
2140 return (frame_bytes - 4) * 2 / ch;
2141 case AV_CODEC_ID_ADPCM_IMA_AMV:
2142 return (frame_bytes - 8) * 2 / ch;
2143 case AV_CODEC_ID_ADPCM_XA:
2144 return (frame_bytes / 128) * 224 / ch;
2145 case AV_CODEC_ID_INTERPLAY_DPCM:
2146 return (frame_bytes - 6 - ch) / ch;
2147 case AV_CODEC_ID_ROQ_DPCM:
2148 return (frame_bytes - 8) / ch;
2149 case AV_CODEC_ID_XAN_DPCM:
2150 return (frame_bytes - 2 * ch) / ch;
2151 case AV_CODEC_ID_MACE3:
2152 return 3 * frame_bytes / ch;
2153 case AV_CODEC_ID_MACE6:
2154 return 6 * frame_bytes / ch;
2155 case AV_CODEC_ID_PCM_LXF:
2156 return 2 * (frame_bytes / (5 * ch));
2160 /* calc from frame_bytes, channels, and codec_tag */
2161 if (id == AV_CODEC_ID_SOL_DPCM) {
2163 return frame_bytes / ch;
2165 return frame_bytes * 2 / ch;
2170 /* calc from frame_bytes, channels, and block_align */
2171 int blocks = frame_bytes / ba;
2172 switch (avctx->codec_id) {
2173 case AV_CODEC_ID_ADPCM_IMA_WAV:
2174 return blocks * (1 + (ba - 4 * ch) / (4 * ch) * 8);
2175 case AV_CODEC_ID_ADPCM_IMA_DK3:
2176 return blocks * (((ba - 16) * 2 / 3 * 4) / ch);
2177 case AV_CODEC_ID_ADPCM_IMA_DK4:
2178 return blocks * (1 + (ba - 4 * ch) * 2 / ch);
2179 case AV_CODEC_ID_ADPCM_MS:
2180 return blocks * (2 + (ba - 7 * ch) * 2 / ch);
2185 /* calc from frame_bytes, channels, and bits_per_coded_sample */
2186 switch (avctx->codec_id) {
2187 case AV_CODEC_ID_PCM_DVD:
2188 return 2 * (frame_bytes / ((bps * 2 / 8) * ch));
2189 case AV_CODEC_ID_PCM_BLURAY:
2190 return frame_bytes / ((FFALIGN(ch, 2) * bps) / 8);
2191 case AV_CODEC_ID_S302M:
2192 return 2 * (frame_bytes / ((bps + 4) / 4)) / ch;
2202 int ff_thread_init(AVCodecContext *s)
2209 unsigned int av_xiphlacing(unsigned char *s, unsigned int v)
2223 int ff_match_2uint16(const uint16_t(*tab)[2], int size, int a, int b)
2226 for (i = 0; i < size && !(tab[i][0] == a && tab[i][1] == b); i++) ;
2230 #if FF_API_MISSING_SAMPLE
2231 FF_DISABLE_DEPRECATION_WARNINGS
2232 void av_log_missing_feature(void *avc, const char *feature, int want_sample)
2234 av_log(avc, AV_LOG_WARNING, "%s is not implemented. Update your Libav "
2235 "version to the newest one from Git. If the problem still "
2236 "occurs, it means that your file has a feature which has not "
2237 "been implemented.\n", feature);
2239 av_log_ask_for_sample(avc, NULL);
2242 void av_log_ask_for_sample(void *avc, const char *msg, ...)
2244 va_list argument_list;
2246 va_start(argument_list, msg);
2249 av_vlog(avc, AV_LOG_WARNING, msg, argument_list);
2250 av_log(avc, AV_LOG_WARNING, "If you want to help, upload a sample "
2251 "of this file to ftp://upload.libav.org/incoming/ "
2252 "and contact the libav-devel mailing list.\n");
2254 va_end(argument_list);
2256 FF_ENABLE_DEPRECATION_WARNINGS
2257 #endif /* FF_API_MISSING_SAMPLE */
2259 static AVHWAccel *first_hwaccel = NULL;
2261 void av_register_hwaccel(AVHWAccel *hwaccel)
2263 AVHWAccel **p = &first_hwaccel;
2267 hwaccel->next = NULL;
2270 AVHWAccel *av_hwaccel_next(AVHWAccel *hwaccel)
2272 return hwaccel ? hwaccel->next : first_hwaccel;
2275 int av_lockmgr_register(int (*cb)(void **mutex, enum AVLockOp op))
2278 if (lockmgr_cb(&codec_mutex, AV_LOCK_DESTROY))
2280 if (lockmgr_cb(&avformat_mutex, AV_LOCK_DESTROY))
2287 if (lockmgr_cb(&codec_mutex, AV_LOCK_CREATE))
2289 if (lockmgr_cb(&avformat_mutex, AV_LOCK_CREATE))
2295 int avpriv_lock_avformat(void)
2298 if ((*lockmgr_cb)(&avformat_mutex, AV_LOCK_OBTAIN))
2304 int avpriv_unlock_avformat(void)
2307 if ((*lockmgr_cb)(&avformat_mutex, AV_LOCK_RELEASE))
2313 unsigned int avpriv_toupper4(unsigned int x)
2315 return av_toupper(x & 0xFF) +
2316 (av_toupper((x >> 8) & 0xFF) << 8) +
2317 (av_toupper((x >> 16) & 0xFF) << 16) +
2318 (av_toupper((x >> 24) & 0xFF) << 24);
2321 int ff_thread_ref_frame(ThreadFrame *dst, ThreadFrame *src)
2325 dst->owner = src->owner;
2327 ret = av_frame_ref(dst->f, src->f);
2331 if (src->progress &&
2332 !(dst->progress = av_buffer_ref(src->progress))) {
2333 ff_thread_release_buffer(dst->owner, dst);
2334 return AVERROR(ENOMEM);
2342 int ff_thread_get_buffer(AVCodecContext *avctx, ThreadFrame *f, int flags)
2345 return ff_get_buffer(avctx, f->f, flags);
2348 void ff_thread_release_buffer(AVCodecContext *avctx, ThreadFrame *f)
2351 av_frame_unref(f->f);
2354 void ff_thread_finish_setup(AVCodecContext *avctx)
2358 void ff_thread_report_progress(ThreadFrame *f, int progress, int field)
2362 void ff_thread_await_progress(ThreadFrame *f, int progress, int field)
2368 enum AVMediaType avcodec_get_type(enum AVCodecID codec_id)
2370 if (codec_id <= AV_CODEC_ID_NONE)
2371 return AVMEDIA_TYPE_UNKNOWN;
2372 else if (codec_id < AV_CODEC_ID_FIRST_AUDIO)
2373 return AVMEDIA_TYPE_VIDEO;
2374 else if (codec_id < AV_CODEC_ID_FIRST_SUBTITLE)
2375 return AVMEDIA_TYPE_AUDIO;
2376 else if (codec_id < AV_CODEC_ID_FIRST_UNKNOWN)
2377 return AVMEDIA_TYPE_SUBTITLE;
2379 return AVMEDIA_TYPE_UNKNOWN;
2382 int avcodec_is_open(AVCodecContext *s)
2384 return !!s->internal;
2387 const uint8_t *avpriv_find_start_code(const uint8_t *restrict p,
2389 uint32_t * restrict state)
2397 for (i = 0; i < 3; i++) {
2398 uint32_t tmp = *state << 8;
2399 *state = tmp + *(p++);
2400 if (tmp == 0x100 || p == end)
2405 if (p[-1] > 1 ) p += 3;
2406 else if (p[-2] ) p += 2;
2407 else if (p[-3]|(p[-1]-1)) p++;
2414 p = FFMIN(p, end) - 4;
2415 *state = AV_RB32(p);