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);
601 /* copy the displaymatrix to the output frame */
602 packet_sd = av_packet_get_side_data(pkt, AV_PKT_DATA_DISPLAYMATRIX, &size);
604 frame_sd = av_frame_new_side_data(frame, AV_FRAME_DATA_DISPLAYMATRIX, size);
606 return AVERROR(ENOMEM);
608 memcpy(frame_sd->data, packet_sd, size);
614 int ff_get_buffer(AVCodecContext *avctx, AVFrame *frame, int flags)
616 const AVHWAccel *hwaccel = avctx->hwaccel;
617 int override_dimensions = 1;
620 switch (avctx->codec_type) {
621 case AVMEDIA_TYPE_VIDEO:
622 if (frame->width <= 0 || frame->height <= 0) {
623 frame->width = FFMAX(avctx->width, avctx->coded_width);
624 frame->height = FFMAX(avctx->height, avctx->coded_height);
625 override_dimensions = 0;
627 if (frame->format < 0)
628 frame->format = avctx->pix_fmt;
629 if (!frame->sample_aspect_ratio.num)
630 frame->sample_aspect_ratio = avctx->sample_aspect_ratio;
632 if ((ret = av_image_check_size(avctx->width, avctx->height, 0, avctx)) < 0)
635 case AVMEDIA_TYPE_AUDIO:
636 if (!frame->sample_rate)
637 frame->sample_rate = avctx->sample_rate;
638 if (frame->format < 0)
639 frame->format = avctx->sample_fmt;
640 if (!frame->channel_layout) {
641 if (avctx->channel_layout) {
642 if (av_get_channel_layout_nb_channels(avctx->channel_layout) !=
644 av_log(avctx, AV_LOG_ERROR, "Inconsistent channel "
646 return AVERROR(EINVAL);
649 frame->channel_layout = avctx->channel_layout;
651 if (avctx->channels > FF_SANE_NB_CHANNELS) {
652 av_log(avctx, AV_LOG_ERROR, "Too many channels: %d.\n",
654 return AVERROR(ENOSYS);
657 frame->channel_layout = av_get_default_channel_layout(avctx->channels);
658 if (!frame->channel_layout)
659 frame->channel_layout = (1ULL << avctx->channels) - 1;
663 default: return AVERROR(EINVAL);
666 ret = ff_decode_frame_props(avctx, frame);
670 if (hwaccel && hwaccel->alloc_frame) {
671 ret = hwaccel->alloc_frame(avctx, frame);
675 #if FF_API_GET_BUFFER
676 FF_DISABLE_DEPRECATION_WARNINGS
678 * Wrap an old get_buffer()-allocated buffer in an bunch of AVBuffers.
679 * We wrap each plane in its own AVBuffer. Each of those has a reference to
680 * a dummy AVBuffer as its private data, unreffing it on free.
681 * When all the planes are freed, the dummy buffer's free callback calls
684 if (avctx->get_buffer) {
685 CompatReleaseBufPriv *priv = NULL;
686 AVBufferRef *dummy_buf = NULL;
689 if (flags & AV_GET_BUFFER_FLAG_REF)
690 frame->reference = 1;
692 ret = avctx->get_buffer(avctx, frame);
696 /* return if the buffers are already set up
697 * this would happen e.g. when a custom get_buffer() calls
698 * avcodec_default_get_buffer
703 priv = av_mallocz(sizeof(*priv));
705 ret = AVERROR(ENOMEM);
708 priv->avctx = *avctx;
709 priv->frame = *frame;
711 dummy_buf = av_buffer_create(NULL, 0, compat_free_buffer, priv, 0);
713 ret = AVERROR(ENOMEM);
717 #define WRAP_PLANE(ref_out, data, data_size) \
719 AVBufferRef *dummy_ref = av_buffer_ref(dummy_buf); \
721 ret = AVERROR(ENOMEM); \
724 ref_out = av_buffer_create(data, data_size, compat_release_buffer, \
727 av_frame_unref(frame); \
728 ret = AVERROR(ENOMEM); \
733 if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
734 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(frame->format);
736 planes = av_pix_fmt_count_planes(frame->format);
737 /* workaround for AVHWAccel plane count of 0, buf[0] is used as
738 check for allocated buffers: make libavcodec happy */
739 if (desc && desc->flags & AV_PIX_FMT_FLAG_HWACCEL)
741 if (!desc || planes <= 0) {
742 ret = AVERROR(EINVAL);
746 for (i = 0; i < planes; i++) {
747 int v_shift = (i == 1 || i == 2) ? desc->log2_chroma_h : 0;
748 int plane_size = (frame->height >> v_shift) * frame->linesize[i];
750 WRAP_PLANE(frame->buf[i], frame->data[i], plane_size);
753 int planar = av_sample_fmt_is_planar(frame->format);
754 planes = planar ? avctx->channels : 1;
756 if (planes > FF_ARRAY_ELEMS(frame->buf)) {
757 frame->nb_extended_buf = planes - FF_ARRAY_ELEMS(frame->buf);
758 frame->extended_buf = av_malloc(sizeof(*frame->extended_buf) *
759 frame->nb_extended_buf);
760 if (!frame->extended_buf) {
761 ret = AVERROR(ENOMEM);
766 for (i = 0; i < FFMIN(planes, FF_ARRAY_ELEMS(frame->buf)); i++)
767 WRAP_PLANE(frame->buf[i], frame->extended_data[i], frame->linesize[0]);
769 for (i = 0; i < frame->nb_extended_buf; i++)
770 WRAP_PLANE(frame->extended_buf[i],
771 frame->extended_data[i + FF_ARRAY_ELEMS(frame->buf)],
775 av_buffer_unref(&dummy_buf);
777 frame->width = avctx->width;
778 frame->height = avctx->height;
783 avctx->release_buffer(avctx, frame);
785 av_buffer_unref(&dummy_buf);
788 FF_ENABLE_DEPRECATION_WARNINGS
791 ret = avctx->get_buffer2(avctx, frame, flags);
794 if (avctx->codec_type == AVMEDIA_TYPE_VIDEO && !override_dimensions) {
795 frame->width = avctx->width;
796 frame->height = avctx->height;
802 int ff_reget_buffer(AVCodecContext *avctx, AVFrame *frame)
807 av_assert0(avctx->codec_type == AVMEDIA_TYPE_VIDEO);
810 return ff_get_buffer(avctx, frame, AV_GET_BUFFER_FLAG_REF);
812 if (av_frame_is_writable(frame))
813 return ff_decode_frame_props(avctx, frame);
815 tmp = av_frame_alloc();
817 return AVERROR(ENOMEM);
819 av_frame_move_ref(tmp, frame);
821 ret = ff_get_buffer(avctx, frame, AV_GET_BUFFER_FLAG_REF);
827 av_frame_copy(frame, tmp);
833 #if FF_API_GET_BUFFER
834 void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic)
839 int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic)
846 int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2), void *arg, int *ret, int count, int size)
850 for (i = 0; i < count; i++) {
851 int r = func(c, (char *)arg + i * size);
858 int avcodec_default_execute2(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2, int jobnr, int threadnr), void *arg, int *ret, int count)
862 for (i = 0; i < count; i++) {
863 int r = func(c, arg, i, 0);
870 static int is_hwaccel_pix_fmt(enum AVPixelFormat pix_fmt)
872 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
873 return desc->flags & AV_PIX_FMT_FLAG_HWACCEL;
876 enum AVPixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum AVPixelFormat *fmt)
878 while (*fmt != AV_PIX_FMT_NONE && is_hwaccel_pix_fmt(*fmt))
883 static AVHWAccel *find_hwaccel(enum AVCodecID codec_id,
884 enum AVPixelFormat pix_fmt)
886 AVHWAccel *hwaccel = NULL;
888 while ((hwaccel = av_hwaccel_next(hwaccel)))
889 if (hwaccel->id == codec_id
890 && hwaccel->pix_fmt == pix_fmt)
896 int ff_get_format(AVCodecContext *avctx, const enum AVPixelFormat *fmt)
898 const AVPixFmtDescriptor *desc;
899 enum AVPixelFormat ret = avctx->get_format(avctx, fmt);
901 desc = av_pix_fmt_desc_get(ret);
903 return AV_PIX_FMT_NONE;
905 if (avctx->hwaccel && avctx->hwaccel->uninit)
906 avctx->hwaccel->uninit(avctx);
907 av_freep(&avctx->internal->hwaccel_priv_data);
908 avctx->hwaccel = NULL;
910 if (desc->flags & AV_PIX_FMT_FLAG_HWACCEL) {
914 hwaccel = find_hwaccel(avctx->codec_id, ret);
916 av_log(avctx, AV_LOG_ERROR,
917 "Could not find an AVHWAccel for the pixel format: %s",
919 return AV_PIX_FMT_NONE;
922 if (hwaccel->priv_data_size) {
923 avctx->internal->hwaccel_priv_data = av_mallocz(hwaccel->priv_data_size);
924 if (!avctx->internal->hwaccel_priv_data)
925 return AV_PIX_FMT_NONE;
929 err = hwaccel->init(avctx);
931 av_freep(&avctx->internal->hwaccel_priv_data);
932 return AV_PIX_FMT_NONE;
935 avctx->hwaccel = hwaccel;
941 #if FF_API_AVFRAME_LAVC
942 void avcodec_get_frame_defaults(AVFrame *frame)
944 if (frame->extended_data != frame->data)
945 av_freep(&frame->extended_data);
947 memset(frame, 0, sizeof(AVFrame));
949 frame->pts = AV_NOPTS_VALUE;
950 frame->key_frame = 1;
951 frame->sample_aspect_ratio = (AVRational) {0, 1 };
952 frame->format = -1; /* unknown */
953 frame->extended_data = frame->data;
956 AVFrame *avcodec_alloc_frame(void)
958 AVFrame *frame = av_mallocz(sizeof(AVFrame));
963 FF_DISABLE_DEPRECATION_WARNINGS
964 avcodec_get_frame_defaults(frame);
965 FF_ENABLE_DEPRECATION_WARNINGS
970 void avcodec_free_frame(AVFrame **frame)
972 av_frame_free(frame);
976 int attribute_align_arg avcodec_open2(AVCodecContext *avctx, const AVCodec *codec, AVDictionary **options)
979 AVDictionary *tmp = NULL;
981 if (avcodec_is_open(avctx))
984 if ((!codec && !avctx->codec)) {
985 av_log(avctx, AV_LOG_ERROR, "No codec provided to avcodec_open2().\n");
986 return AVERROR(EINVAL);
988 if ((codec && avctx->codec && codec != avctx->codec)) {
989 av_log(avctx, AV_LOG_ERROR, "This AVCodecContext was allocated for %s, "
990 "but %s passed to avcodec_open2().\n", avctx->codec->name, codec->name);
991 return AVERROR(EINVAL);
994 codec = avctx->codec;
996 if (avctx->extradata_size < 0 || avctx->extradata_size >= FF_MAX_EXTRADATA_SIZE)
997 return AVERROR(EINVAL);
1000 av_dict_copy(&tmp, *options, 0);
1002 /* If there is a user-supplied mutex locking routine, call it. */
1004 if ((*lockmgr_cb)(&codec_mutex, AV_LOCK_OBTAIN))
1008 entangled_thread_counter++;
1009 if (entangled_thread_counter != 1) {
1010 av_log(avctx, AV_LOG_ERROR, "insufficient thread locking around avcodec_open/close()\n");
1015 avctx->internal = av_mallocz(sizeof(AVCodecInternal));
1016 if (!avctx->internal) {
1017 ret = AVERROR(ENOMEM);
1021 avctx->internal->pool = av_mallocz(sizeof(*avctx->internal->pool));
1022 if (!avctx->internal->pool) {
1023 ret = AVERROR(ENOMEM);
1027 avctx->internal->to_free = av_frame_alloc();
1028 if (!avctx->internal->to_free) {
1029 ret = AVERROR(ENOMEM);
1033 if (codec->priv_data_size > 0) {
1034 if (!avctx->priv_data) {
1035 avctx->priv_data = av_mallocz(codec->priv_data_size);
1036 if (!avctx->priv_data) {
1037 ret = AVERROR(ENOMEM);
1040 if (codec->priv_class) {
1041 *(const AVClass **)avctx->priv_data = codec->priv_class;
1042 av_opt_set_defaults(avctx->priv_data);
1045 if (codec->priv_class && (ret = av_opt_set_dict(avctx->priv_data, &tmp)) < 0)
1048 avctx->priv_data = NULL;
1050 if ((ret = av_opt_set_dict(avctx, &tmp)) < 0)
1053 if (avctx->coded_width && avctx->coded_height && !avctx->width && !avctx->height)
1054 ret = ff_set_dimensions(avctx, avctx->coded_width, avctx->coded_height);
1055 else if (avctx->width && avctx->height)
1056 ret = ff_set_dimensions(avctx, avctx->width, avctx->height);
1060 if ((avctx->coded_width || avctx->coded_height || avctx->width || avctx->height)
1061 && ( av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx) < 0
1062 || av_image_check_size(avctx->width, avctx->height, 0, avctx) < 0)) {
1063 av_log(avctx, AV_LOG_WARNING, "ignoring invalid width/height values\n");
1064 ff_set_dimensions(avctx, 0, 0);
1067 /* if the decoder init function was already called previously,
1068 * free the already allocated subtitle_header before overwriting it */
1069 if (av_codec_is_decoder(codec))
1070 av_freep(&avctx->subtitle_header);
1072 if (avctx->channels > FF_SANE_NB_CHANNELS) {
1073 ret = AVERROR(EINVAL);
1077 avctx->codec = codec;
1078 if ((avctx->codec_type == AVMEDIA_TYPE_UNKNOWN || avctx->codec_type == codec->type) &&
1079 avctx->codec_id == AV_CODEC_ID_NONE) {
1080 avctx->codec_type = codec->type;
1081 avctx->codec_id = codec->id;
1083 if (avctx->codec_id != codec->id || (avctx->codec_type != codec->type
1084 && avctx->codec_type != AVMEDIA_TYPE_ATTACHMENT)) {
1085 av_log(avctx, AV_LOG_ERROR, "codec type or id mismatches\n");
1086 ret = AVERROR(EINVAL);
1089 avctx->frame_number = 0;
1091 if (avctx->codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
1092 avctx->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
1093 ret = AVERROR_EXPERIMENTAL;
1097 if (avctx->codec_type == AVMEDIA_TYPE_AUDIO &&
1098 (!avctx->time_base.num || !avctx->time_base.den)) {
1099 avctx->time_base.num = 1;
1100 avctx->time_base.den = avctx->sample_rate;
1104 ret = ff_thread_init(avctx);
1109 if (!HAVE_THREADS && !(codec->capabilities & CODEC_CAP_AUTO_THREADS))
1110 avctx->thread_count = 1;
1112 if (av_codec_is_encoder(avctx->codec)) {
1114 if (avctx->codec->sample_fmts) {
1115 for (i = 0; avctx->codec->sample_fmts[i] != AV_SAMPLE_FMT_NONE; i++) {
1116 if (avctx->sample_fmt == avctx->codec->sample_fmts[i])
1118 if (avctx->channels == 1 &&
1119 av_get_planar_sample_fmt(avctx->sample_fmt) ==
1120 av_get_planar_sample_fmt(avctx->codec->sample_fmts[i])) {
1121 avctx->sample_fmt = avctx->codec->sample_fmts[i];
1125 if (avctx->codec->sample_fmts[i] == AV_SAMPLE_FMT_NONE) {
1126 av_log(avctx, AV_LOG_ERROR, "Specified sample_fmt is not supported.\n");
1127 ret = AVERROR(EINVAL);
1131 if (avctx->codec->pix_fmts) {
1132 for (i = 0; avctx->codec->pix_fmts[i] != AV_PIX_FMT_NONE; i++)
1133 if (avctx->pix_fmt == avctx->codec->pix_fmts[i])
1135 if (avctx->codec->pix_fmts[i] == AV_PIX_FMT_NONE) {
1136 av_log(avctx, AV_LOG_ERROR, "Specified pix_fmt is not supported\n");
1137 ret = AVERROR(EINVAL);
1141 if (avctx->codec->supported_samplerates) {
1142 for (i = 0; avctx->codec->supported_samplerates[i] != 0; i++)
1143 if (avctx->sample_rate == avctx->codec->supported_samplerates[i])
1145 if (avctx->codec->supported_samplerates[i] == 0) {
1146 av_log(avctx, AV_LOG_ERROR, "Specified sample_rate is not supported\n");
1147 ret = AVERROR(EINVAL);
1151 if (avctx->codec->channel_layouts) {
1152 if (!avctx->channel_layout) {
1153 av_log(avctx, AV_LOG_WARNING, "channel_layout not specified\n");
1155 for (i = 0; avctx->codec->channel_layouts[i] != 0; i++)
1156 if (avctx->channel_layout == avctx->codec->channel_layouts[i])
1158 if (avctx->codec->channel_layouts[i] == 0) {
1159 av_log(avctx, AV_LOG_ERROR, "Specified channel_layout is not supported\n");
1160 ret = AVERROR(EINVAL);
1165 if (avctx->channel_layout && avctx->channels) {
1166 if (av_get_channel_layout_nb_channels(avctx->channel_layout) != avctx->channels) {
1167 av_log(avctx, AV_LOG_ERROR, "channel layout does not match number of channels\n");
1168 ret = AVERROR(EINVAL);
1171 } else if (avctx->channel_layout) {
1172 avctx->channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
1175 if (!avctx->rc_initial_buffer_occupancy)
1176 avctx->rc_initial_buffer_occupancy = avctx->rc_buffer_size * 3 / 4;
1179 if (avctx->codec->init && !(avctx->active_thread_type & FF_THREAD_FRAME)) {
1180 ret = avctx->codec->init(avctx);
1186 if (av_codec_is_decoder(avctx->codec)) {
1187 /* validate channel layout from the decoder */
1188 if (avctx->channel_layout) {
1189 int channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
1190 if (!avctx->channels)
1191 avctx->channels = channels;
1192 else if (channels != avctx->channels) {
1193 av_log(avctx, AV_LOG_WARNING,
1194 "channel layout does not match number of channels\n");
1195 avctx->channel_layout = 0;
1198 if (avctx->channels && avctx->channels < 0 ||
1199 avctx->channels > FF_SANE_NB_CHANNELS) {
1200 ret = AVERROR(EINVAL);
1205 entangled_thread_counter--;
1207 /* Release any user-supplied mutex. */
1209 (*lockmgr_cb)(&codec_mutex, AV_LOCK_RELEASE);
1212 av_dict_free(options);
1219 av_freep(&avctx->priv_data);
1220 if (avctx->internal) {
1221 av_frame_free(&avctx->internal->to_free);
1222 av_freep(&avctx->internal->pool);
1224 av_freep(&avctx->internal);
1225 avctx->codec = NULL;
1229 int ff_alloc_packet(AVPacket *avpkt, int size)
1231 if (size > INT_MAX - FF_INPUT_BUFFER_PADDING_SIZE)
1232 return AVERROR(EINVAL);
1235 AVBufferRef *buf = avpkt->buf;
1236 #if FF_API_DESTRUCT_PACKET
1237 FF_DISABLE_DEPRECATION_WARNINGS
1238 void *destruct = avpkt->destruct;
1239 FF_ENABLE_DEPRECATION_WARNINGS
1242 if (avpkt->size < size)
1243 return AVERROR(EINVAL);
1245 av_init_packet(avpkt);
1246 #if FF_API_DESTRUCT_PACKET
1247 FF_DISABLE_DEPRECATION_WARNINGS
1248 avpkt->destruct = destruct;
1249 FF_ENABLE_DEPRECATION_WARNINGS
1255 return av_new_packet(avpkt, size);
1260 * Pad last frame with silence.
1262 static int pad_last_frame(AVCodecContext *s, AVFrame **dst, const AVFrame *src)
1264 AVFrame *frame = NULL;
1267 if (!(frame = av_frame_alloc()))
1268 return AVERROR(ENOMEM);
1270 frame->format = src->format;
1271 frame->channel_layout = src->channel_layout;
1272 frame->nb_samples = s->frame_size;
1273 ret = av_frame_get_buffer(frame, 32);
1277 ret = av_frame_copy_props(frame, src);
1281 if ((ret = av_samples_copy(frame->extended_data, src->extended_data, 0, 0,
1282 src->nb_samples, s->channels, s->sample_fmt)) < 0)
1284 if ((ret = av_samples_set_silence(frame->extended_data, src->nb_samples,
1285 frame->nb_samples - src->nb_samples,
1286 s->channels, s->sample_fmt)) < 0)
1294 av_frame_free(&frame);
1298 int attribute_align_arg avcodec_encode_audio2(AVCodecContext *avctx,
1300 const AVFrame *frame,
1301 int *got_packet_ptr)
1304 AVFrame *padded_frame = NULL;
1306 int user_packet = !!avpkt->data;
1308 *got_packet_ptr = 0;
1310 if (!(avctx->codec->capabilities & CODEC_CAP_DELAY) && !frame) {
1311 av_free_packet(avpkt);
1312 av_init_packet(avpkt);
1316 /* ensure that extended_data is properly set */
1317 if (frame && !frame->extended_data) {
1318 if (av_sample_fmt_is_planar(avctx->sample_fmt) &&
1319 avctx->channels > AV_NUM_DATA_POINTERS) {
1320 av_log(avctx, AV_LOG_ERROR, "Encoding to a planar sample format, "
1321 "with more than %d channels, but extended_data is not set.\n",
1322 AV_NUM_DATA_POINTERS);
1323 return AVERROR(EINVAL);
1325 av_log(avctx, AV_LOG_WARNING, "extended_data is not set.\n");
1328 tmp.extended_data = tmp.data;
1332 /* check for valid frame size */
1334 if (avctx->codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME) {
1335 if (frame->nb_samples > avctx->frame_size)
1336 return AVERROR(EINVAL);
1337 } else if (!(avctx->codec->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE)) {
1338 if (frame->nb_samples < avctx->frame_size &&
1339 !avctx->internal->last_audio_frame) {
1340 ret = pad_last_frame(avctx, &padded_frame, frame);
1344 frame = padded_frame;
1345 avctx->internal->last_audio_frame = 1;
1348 if (frame->nb_samples != avctx->frame_size) {
1349 ret = AVERROR(EINVAL);
1355 ret = avctx->codec->encode2(avctx, avpkt, frame, got_packet_ptr);
1357 if (*got_packet_ptr) {
1358 if (!(avctx->codec->capabilities & CODEC_CAP_DELAY)) {
1359 if (avpkt->pts == AV_NOPTS_VALUE)
1360 avpkt->pts = frame->pts;
1361 if (!avpkt->duration)
1362 avpkt->duration = ff_samples_to_time_base(avctx,
1365 avpkt->dts = avpkt->pts;
1370 if (!user_packet && avpkt->size) {
1371 ret = av_buffer_realloc(&avpkt->buf, avpkt->size);
1373 avpkt->data = avpkt->buf->data;
1376 avctx->frame_number++;
1379 if (ret < 0 || !*got_packet_ptr) {
1380 av_free_packet(avpkt);
1381 av_init_packet(avpkt);
1385 /* NOTE: if we add any audio encoders which output non-keyframe packets,
1386 * this needs to be moved to the encoders, but for now we can do it
1387 * here to simplify things */
1388 avpkt->flags |= AV_PKT_FLAG_KEY;
1391 av_frame_free(&padded_frame);
1396 int attribute_align_arg avcodec_encode_video2(AVCodecContext *avctx,
1398 const AVFrame *frame,
1399 int *got_packet_ptr)
1402 int user_packet = !!avpkt->data;
1404 *got_packet_ptr = 0;
1406 if (!(avctx->codec->capabilities & CODEC_CAP_DELAY) && !frame) {
1407 av_free_packet(avpkt);
1408 av_init_packet(avpkt);
1413 if (av_image_check_size(avctx->width, avctx->height, 0, avctx))
1414 return AVERROR(EINVAL);
1416 av_assert0(avctx->codec->encode2);
1418 ret = avctx->codec->encode2(avctx, avpkt, frame, got_packet_ptr);
1420 if (!*got_packet_ptr)
1422 else if (!(avctx->codec->capabilities & CODEC_CAP_DELAY))
1423 avpkt->pts = avpkt->dts = frame->pts;
1425 if (!user_packet && avpkt->size) {
1426 ret = av_buffer_realloc(&avpkt->buf, avpkt->size);
1428 avpkt->data = avpkt->buf->data;
1431 avctx->frame_number++;
1434 if (ret < 0 || !*got_packet_ptr)
1435 av_free_packet(avpkt);
1441 int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size,
1442 const AVSubtitle *sub)
1445 if (sub->start_display_time) {
1446 av_log(avctx, AV_LOG_ERROR, "start_display_time must be 0.\n");
1449 if (sub->num_rects == 0 || !sub->rects)
1451 ret = avctx->codec->encode_sub(avctx, buf, buf_size, sub);
1452 avctx->frame_number++;
1456 static int apply_param_change(AVCodecContext *avctx, AVPacket *avpkt)
1459 const uint8_t *data;
1462 data = av_packet_get_side_data(avpkt, AV_PKT_DATA_PARAM_CHANGE, &size);
1466 if (!(avctx->codec->capabilities & CODEC_CAP_PARAM_CHANGE)) {
1467 av_log(avctx, AV_LOG_ERROR, "This decoder does not support parameter "
1468 "changes, but PARAM_CHANGE side data was sent to it.\n");
1469 return AVERROR(EINVAL);
1475 flags = bytestream_get_le32(&data);
1478 if (flags & AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_COUNT) {
1481 avctx->channels = bytestream_get_le32(&data);
1484 if (flags & AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_LAYOUT) {
1487 avctx->channel_layout = bytestream_get_le64(&data);
1490 if (flags & AV_SIDE_DATA_PARAM_CHANGE_SAMPLE_RATE) {
1493 avctx->sample_rate = bytestream_get_le32(&data);
1496 if (flags & AV_SIDE_DATA_PARAM_CHANGE_DIMENSIONS) {
1499 avctx->width = bytestream_get_le32(&data);
1500 avctx->height = bytestream_get_le32(&data);
1502 ret = ff_set_dimensions(avctx, avctx->width, avctx->height);
1509 av_log(avctx, AV_LOG_ERROR, "PARAM_CHANGE side data too small.\n");
1510 return AVERROR_INVALIDDATA;
1513 static int unrefcount_frame(AVCodecInternal *avci, AVFrame *frame)
1517 /* move the original frame to our backup */
1518 av_frame_unref(avci->to_free);
1519 av_frame_move_ref(avci->to_free, frame);
1521 /* now copy everything except the AVBufferRefs back
1522 * note that we make a COPY of the side data, so calling av_frame_free() on
1523 * the caller's frame will work properly */
1524 ret = av_frame_copy_props(frame, avci->to_free);
1528 memcpy(frame->data, avci->to_free->data, sizeof(frame->data));
1529 memcpy(frame->linesize, avci->to_free->linesize, sizeof(frame->linesize));
1530 if (avci->to_free->extended_data != avci->to_free->data) {
1531 int planes = av_get_channel_layout_nb_channels(avci->to_free->channel_layout);
1532 int size = planes * sizeof(*frame->extended_data);
1535 av_frame_unref(frame);
1539 frame->extended_data = av_malloc(size);
1540 if (!frame->extended_data) {
1541 av_frame_unref(frame);
1542 return AVERROR(ENOMEM);
1544 memcpy(frame->extended_data, avci->to_free->extended_data,
1547 frame->extended_data = frame->data;
1549 frame->format = avci->to_free->format;
1550 frame->width = avci->to_free->width;
1551 frame->height = avci->to_free->height;
1552 frame->channel_layout = avci->to_free->channel_layout;
1553 frame->nb_samples = avci->to_free->nb_samples;
1558 int attribute_align_arg avcodec_decode_video2(AVCodecContext *avctx, AVFrame *picture,
1559 int *got_picture_ptr,
1562 AVCodecInternal *avci = avctx->internal;
1565 *got_picture_ptr = 0;
1566 if ((avctx->coded_width || avctx->coded_height) && av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx))
1569 avctx->internal->pkt = avpkt;
1570 ret = apply_param_change(avctx, avpkt);
1572 av_log(avctx, AV_LOG_ERROR, "Error applying parameter changes.\n");
1573 if (avctx->err_recognition & AV_EF_EXPLODE)
1577 av_frame_unref(picture);
1579 if ((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size || (avctx->active_thread_type & FF_THREAD_FRAME)) {
1580 if (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME)
1581 ret = ff_thread_decode_frame(avctx, picture, got_picture_ptr,
1584 ret = avctx->codec->decode(avctx, picture, got_picture_ptr,
1586 picture->pkt_dts = avpkt->dts;
1587 /* get_buffer is supposed to set frame parameters */
1588 if (!(avctx->codec->capabilities & CODEC_CAP_DR1)) {
1589 picture->sample_aspect_ratio = avctx->sample_aspect_ratio;
1590 picture->width = avctx->width;
1591 picture->height = avctx->height;
1592 picture->format = avctx->pix_fmt;
1596 emms_c(); //needed to avoid an emms_c() call before every return;
1598 if (*got_picture_ptr) {
1599 if (!avctx->refcounted_frames) {
1600 int err = unrefcount_frame(avci, picture);
1605 avctx->frame_number++;
1607 av_frame_unref(picture);
1614 int attribute_align_arg avcodec_decode_audio4(AVCodecContext *avctx,
1619 AVCodecInternal *avci = avctx->internal;
1624 avctx->internal->pkt = avpkt;
1626 if (!avpkt->data && avpkt->size) {
1627 av_log(avctx, AV_LOG_ERROR, "invalid packet: NULL data, size != 0\n");
1628 return AVERROR(EINVAL);
1631 ret = apply_param_change(avctx, avpkt);
1633 av_log(avctx, AV_LOG_ERROR, "Error applying parameter changes.\n");
1634 if (avctx->err_recognition & AV_EF_EXPLODE)
1638 av_frame_unref(frame);
1640 if ((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size) {
1641 ret = avctx->codec->decode(avctx, frame, got_frame_ptr, avpkt);
1642 if (ret >= 0 && *got_frame_ptr) {
1643 avctx->frame_number++;
1644 frame->pkt_dts = avpkt->dts;
1645 if (frame->format == AV_SAMPLE_FMT_NONE)
1646 frame->format = avctx->sample_fmt;
1648 if (!avctx->refcounted_frames) {
1649 int err = unrefcount_frame(avci, frame);
1654 av_frame_unref(frame);
1661 int avcodec_decode_subtitle2(AVCodecContext *avctx, AVSubtitle *sub,
1667 avctx->internal->pkt = avpkt;
1669 ret = avctx->codec->decode(avctx, sub, got_sub_ptr, avpkt);
1671 avctx->frame_number++;
1675 void avsubtitle_free(AVSubtitle *sub)
1679 for (i = 0; i < sub->num_rects; i++) {
1680 av_freep(&sub->rects[i]->pict.data[0]);
1681 av_freep(&sub->rects[i]->pict.data[1]);
1682 av_freep(&sub->rects[i]->pict.data[2]);
1683 av_freep(&sub->rects[i]->pict.data[3]);
1684 av_freep(&sub->rects[i]->text);
1685 av_freep(&sub->rects[i]->ass);
1686 av_freep(&sub->rects[i]);
1689 av_freep(&sub->rects);
1691 memset(sub, 0, sizeof(AVSubtitle));
1694 av_cold int avcodec_close(AVCodecContext *avctx)
1696 if (avcodec_is_open(avctx)) {
1697 FramePool *pool = avctx->internal->pool;
1699 if (HAVE_THREADS && avctx->internal->thread_ctx)
1700 ff_thread_free(avctx);
1701 if (avctx->codec && avctx->codec->close)
1702 avctx->codec->close(avctx);
1703 avctx->coded_frame = NULL;
1704 av_frame_free(&avctx->internal->to_free);
1705 for (i = 0; i < FF_ARRAY_ELEMS(pool->pools); i++)
1706 av_buffer_pool_uninit(&pool->pools[i]);
1707 av_freep(&avctx->internal->pool);
1709 if (avctx->hwaccel && avctx->hwaccel->uninit)
1710 avctx->hwaccel->uninit(avctx);
1711 av_freep(&avctx->internal->hwaccel_priv_data);
1713 av_freep(&avctx->internal);
1716 if (avctx->priv_data && avctx->codec && avctx->codec->priv_class)
1717 av_opt_free(avctx->priv_data);
1719 av_freep(&avctx->priv_data);
1720 if (av_codec_is_encoder(avctx->codec))
1721 av_freep(&avctx->extradata);
1722 avctx->codec = NULL;
1723 avctx->active_thread_type = 0;
1728 static AVCodec *find_encdec(enum AVCodecID id, int encoder)
1730 AVCodec *p, *experimental = NULL;
1733 if ((encoder ? av_codec_is_encoder(p) : av_codec_is_decoder(p)) &&
1735 if (p->capabilities & CODEC_CAP_EXPERIMENTAL && !experimental) {
1742 return experimental;
1745 AVCodec *avcodec_find_encoder(enum AVCodecID id)
1747 return find_encdec(id, 1);
1750 AVCodec *avcodec_find_encoder_by_name(const char *name)
1757 if (av_codec_is_encoder(p) && strcmp(name, p->name) == 0)
1764 AVCodec *avcodec_find_decoder(enum AVCodecID id)
1766 return find_encdec(id, 0);
1769 AVCodec *avcodec_find_decoder_by_name(const char *name)
1776 if (av_codec_is_decoder(p) && strcmp(name, p->name) == 0)
1783 static int get_bit_rate(AVCodecContext *ctx)
1786 int bits_per_sample;
1788 switch (ctx->codec_type) {
1789 case AVMEDIA_TYPE_VIDEO:
1790 case AVMEDIA_TYPE_DATA:
1791 case AVMEDIA_TYPE_SUBTITLE:
1792 case AVMEDIA_TYPE_ATTACHMENT:
1793 bit_rate = ctx->bit_rate;
1795 case AVMEDIA_TYPE_AUDIO:
1796 bits_per_sample = av_get_bits_per_sample(ctx->codec_id);
1797 bit_rate = bits_per_sample ? ctx->sample_rate * ctx->channels * bits_per_sample : ctx->bit_rate;
1806 size_t av_get_codec_tag_string(char *buf, size_t buf_size, unsigned int codec_tag)
1808 int i, len, ret = 0;
1810 #define TAG_PRINT(x) \
1811 (((x) >= '0' && (x) <= '9') || \
1812 ((x) >= 'a' && (x) <= 'z') || ((x) >= 'A' && (x) <= 'Z') || \
1813 ((x) == '.' || (x) == ' '))
1815 for (i = 0; i < 4; i++) {
1816 len = snprintf(buf, buf_size,
1817 TAG_PRINT(codec_tag & 0xFF) ? "%c" : "[%d]", codec_tag & 0xFF);
1819 buf_size = buf_size > len ? buf_size - len : 0;
1826 void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)
1828 const char *codec_name;
1829 const char *profile = NULL;
1833 AVRational display_aspect_ratio;
1838 p = avcodec_find_encoder(enc->codec_id);
1840 p = avcodec_find_decoder(enc->codec_id);
1843 codec_name = p->name;
1844 profile = av_get_profile_name(p, enc->profile);
1845 } else if (enc->codec_id == AV_CODEC_ID_MPEG2TS) {
1846 /* fake mpeg2 transport stream codec (currently not
1848 codec_name = "mpeg2ts";
1850 /* output avi tags */
1852 av_get_codec_tag_string(tag_buf, sizeof(tag_buf), enc->codec_tag);
1853 snprintf(buf1, sizeof(buf1), "%s / 0x%04X", tag_buf, enc->codec_tag);
1857 switch (enc->codec_type) {
1858 case AVMEDIA_TYPE_VIDEO:
1859 snprintf(buf, buf_size,
1861 codec_name, enc->mb_decision ? " (hq)" : "");
1863 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1865 if (enc->pix_fmt != AV_PIX_FMT_NONE) {
1866 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1868 av_get_pix_fmt_name(enc->pix_fmt));
1871 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1873 enc->width, enc->height);
1874 if (enc->sample_aspect_ratio.num) {
1875 av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
1876 enc->width * enc->sample_aspect_ratio.num,
1877 enc->height * enc->sample_aspect_ratio.den,
1879 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1880 " [PAR %d:%d DAR %d:%d]",
1881 enc->sample_aspect_ratio.num, enc->sample_aspect_ratio.den,
1882 display_aspect_ratio.num, display_aspect_ratio.den);
1884 if (av_log_get_level() >= AV_LOG_DEBUG) {
1885 int g = av_gcd(enc->time_base.num, enc->time_base.den);
1886 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1888 enc->time_base.num / g, enc->time_base.den / g);
1892 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1893 ", q=%d-%d", enc->qmin, enc->qmax);
1896 case AVMEDIA_TYPE_AUDIO:
1897 snprintf(buf, buf_size,
1901 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1903 if (enc->sample_rate) {
1904 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1905 ", %d Hz", enc->sample_rate);
1907 av_strlcat(buf, ", ", buf_size);
1908 av_get_channel_layout_string(buf + strlen(buf), buf_size - strlen(buf), enc->channels, enc->channel_layout);
1909 if (enc->sample_fmt != AV_SAMPLE_FMT_NONE) {
1910 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1911 ", %s", av_get_sample_fmt_name(enc->sample_fmt));
1914 case AVMEDIA_TYPE_DATA:
1915 snprintf(buf, buf_size, "Data: %s", codec_name);
1917 case AVMEDIA_TYPE_SUBTITLE:
1918 snprintf(buf, buf_size, "Subtitle: %s", codec_name);
1920 case AVMEDIA_TYPE_ATTACHMENT:
1921 snprintf(buf, buf_size, "Attachment: %s", codec_name);
1924 snprintf(buf, buf_size, "Invalid Codec type %d", enc->codec_type);
1928 if (enc->flags & CODEC_FLAG_PASS1)
1929 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1931 if (enc->flags & CODEC_FLAG_PASS2)
1932 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1935 bitrate = get_bit_rate(enc);
1937 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1938 ", %d kb/s", bitrate / 1000);
1942 const char *av_get_profile_name(const AVCodec *codec, int profile)
1945 if (profile == FF_PROFILE_UNKNOWN || !codec->profiles)
1948 for (p = codec->profiles; p->profile != FF_PROFILE_UNKNOWN; p++)
1949 if (p->profile == profile)
1955 unsigned avcodec_version(void)
1957 return LIBAVCODEC_VERSION_INT;
1960 const char *avcodec_configuration(void)
1962 return LIBAV_CONFIGURATION;
1965 const char *avcodec_license(void)
1967 #define LICENSE_PREFIX "libavcodec license: "
1968 return LICENSE_PREFIX LIBAV_LICENSE + sizeof(LICENSE_PREFIX) - 1;
1971 void avcodec_flush_buffers(AVCodecContext *avctx)
1973 if (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME)
1974 ff_thread_flush(avctx);
1975 else if (avctx->codec->flush)
1976 avctx->codec->flush(avctx);
1978 if (!avctx->refcounted_frames)
1979 av_frame_unref(avctx->internal->to_free);
1982 int av_get_exact_bits_per_sample(enum AVCodecID codec_id)
1985 case AV_CODEC_ID_ADPCM_CT:
1986 case AV_CODEC_ID_ADPCM_IMA_APC:
1987 case AV_CODEC_ID_ADPCM_IMA_EA_SEAD:
1988 case AV_CODEC_ID_ADPCM_IMA_WS:
1989 case AV_CODEC_ID_ADPCM_G722:
1990 case AV_CODEC_ID_ADPCM_YAMAHA:
1992 case AV_CODEC_ID_PCM_ALAW:
1993 case AV_CODEC_ID_PCM_MULAW:
1994 case AV_CODEC_ID_PCM_S8:
1995 case AV_CODEC_ID_PCM_U8:
1996 case AV_CODEC_ID_PCM_ZORK:
1998 case AV_CODEC_ID_PCM_S16BE:
1999 case AV_CODEC_ID_PCM_S16LE:
2000 case AV_CODEC_ID_PCM_S16LE_PLANAR:
2001 case AV_CODEC_ID_PCM_U16BE:
2002 case AV_CODEC_ID_PCM_U16LE:
2004 case AV_CODEC_ID_PCM_S24DAUD:
2005 case AV_CODEC_ID_PCM_S24BE:
2006 case AV_CODEC_ID_PCM_S24LE:
2007 case AV_CODEC_ID_PCM_S24LE_PLANAR:
2008 case AV_CODEC_ID_PCM_U24BE:
2009 case AV_CODEC_ID_PCM_U24LE:
2011 case AV_CODEC_ID_PCM_S32BE:
2012 case AV_CODEC_ID_PCM_S32LE:
2013 case AV_CODEC_ID_PCM_S32LE_PLANAR:
2014 case AV_CODEC_ID_PCM_U32BE:
2015 case AV_CODEC_ID_PCM_U32LE:
2016 case AV_CODEC_ID_PCM_F32BE:
2017 case AV_CODEC_ID_PCM_F32LE:
2019 case AV_CODEC_ID_PCM_F64BE:
2020 case AV_CODEC_ID_PCM_F64LE:
2027 int av_get_bits_per_sample(enum AVCodecID codec_id)
2030 case AV_CODEC_ID_ADPCM_SBPRO_2:
2032 case AV_CODEC_ID_ADPCM_SBPRO_3:
2034 case AV_CODEC_ID_ADPCM_SBPRO_4:
2035 case AV_CODEC_ID_ADPCM_IMA_WAV:
2036 case AV_CODEC_ID_ADPCM_IMA_QT:
2037 case AV_CODEC_ID_ADPCM_SWF:
2038 case AV_CODEC_ID_ADPCM_MS:
2041 return av_get_exact_bits_per_sample(codec_id);
2045 int av_get_audio_frame_duration(AVCodecContext *avctx, int frame_bytes)
2047 int id, sr, ch, ba, tag, bps;
2049 id = avctx->codec_id;
2050 sr = avctx->sample_rate;
2051 ch = avctx->channels;
2052 ba = avctx->block_align;
2053 tag = avctx->codec_tag;
2054 bps = av_get_exact_bits_per_sample(avctx->codec_id);
2056 /* codecs with an exact constant bits per sample */
2057 if (bps > 0 && ch > 0 && frame_bytes > 0)
2058 return (frame_bytes * 8) / (bps * ch);
2059 bps = avctx->bits_per_coded_sample;
2061 /* codecs with a fixed packet duration */
2063 case AV_CODEC_ID_ADPCM_ADX: return 32;
2064 case AV_CODEC_ID_ADPCM_IMA_QT: return 64;
2065 case AV_CODEC_ID_ADPCM_EA_XAS: return 128;
2066 case AV_CODEC_ID_AMR_NB:
2067 case AV_CODEC_ID_GSM:
2068 case AV_CODEC_ID_QCELP:
2069 case AV_CODEC_ID_RA_144:
2070 case AV_CODEC_ID_RA_288: return 160;
2071 case AV_CODEC_ID_IMC: return 256;
2072 case AV_CODEC_ID_AMR_WB:
2073 case AV_CODEC_ID_GSM_MS: return 320;
2074 case AV_CODEC_ID_MP1: return 384;
2075 case AV_CODEC_ID_ATRAC1: return 512;
2076 case AV_CODEC_ID_ATRAC3: return 1024;
2077 case AV_CODEC_ID_MP2:
2078 case AV_CODEC_ID_MUSEPACK7: return 1152;
2079 case AV_CODEC_ID_AC3: return 1536;
2083 /* calc from sample rate */
2084 if (id == AV_CODEC_ID_TTA)
2085 return 256 * sr / 245;
2088 /* calc from sample rate and channels */
2089 if (id == AV_CODEC_ID_BINKAUDIO_DCT)
2090 return (480 << (sr / 22050)) / ch;
2095 /* calc from block_align */
2096 if (id == AV_CODEC_ID_SIPR) {
2098 case 20: return 160;
2099 case 19: return 144;
2100 case 29: return 288;
2101 case 37: return 480;
2103 } else if (id == AV_CODEC_ID_ILBC) {
2105 case 38: return 160;
2106 case 50: return 240;
2111 if (frame_bytes > 0) {
2112 /* calc from frame_bytes only */
2113 if (id == AV_CODEC_ID_TRUESPEECH)
2114 return 240 * (frame_bytes / 32);
2115 if (id == AV_CODEC_ID_NELLYMOSER)
2116 return 256 * (frame_bytes / 64);
2119 /* calc from frame_bytes and bits_per_coded_sample */
2120 if (id == AV_CODEC_ID_ADPCM_G726)
2121 return frame_bytes * 8 / bps;
2125 /* calc from frame_bytes and channels */
2127 case AV_CODEC_ID_ADPCM_4XM:
2128 case AV_CODEC_ID_ADPCM_IMA_ISS:
2129 return (frame_bytes - 4 * ch) * 2 / ch;
2130 case AV_CODEC_ID_ADPCM_IMA_SMJPEG:
2131 return (frame_bytes - 4) * 2 / ch;
2132 case AV_CODEC_ID_ADPCM_IMA_AMV:
2133 return (frame_bytes - 8) * 2 / ch;
2134 case AV_CODEC_ID_ADPCM_XA:
2135 return (frame_bytes / 128) * 224 / ch;
2136 case AV_CODEC_ID_INTERPLAY_DPCM:
2137 return (frame_bytes - 6 - ch) / ch;
2138 case AV_CODEC_ID_ROQ_DPCM:
2139 return (frame_bytes - 8) / ch;
2140 case AV_CODEC_ID_XAN_DPCM:
2141 return (frame_bytes - 2 * ch) / ch;
2142 case AV_CODEC_ID_MACE3:
2143 return 3 * frame_bytes / ch;
2144 case AV_CODEC_ID_MACE6:
2145 return 6 * frame_bytes / ch;
2146 case AV_CODEC_ID_PCM_LXF:
2147 return 2 * (frame_bytes / (5 * ch));
2151 /* calc from frame_bytes, channels, and codec_tag */
2152 if (id == AV_CODEC_ID_SOL_DPCM) {
2154 return frame_bytes / ch;
2156 return frame_bytes * 2 / ch;
2161 /* calc from frame_bytes, channels, and block_align */
2162 int blocks = frame_bytes / ba;
2163 switch (avctx->codec_id) {
2164 case AV_CODEC_ID_ADPCM_IMA_WAV:
2165 return blocks * (1 + (ba - 4 * ch) / (4 * ch) * 8);
2166 case AV_CODEC_ID_ADPCM_IMA_DK3:
2167 return blocks * (((ba - 16) * 2 / 3 * 4) / ch);
2168 case AV_CODEC_ID_ADPCM_IMA_DK4:
2169 return blocks * (1 + (ba - 4 * ch) * 2 / ch);
2170 case AV_CODEC_ID_ADPCM_MS:
2171 return blocks * (2 + (ba - 7 * ch) * 2 / ch);
2176 /* calc from frame_bytes, channels, and bits_per_coded_sample */
2177 switch (avctx->codec_id) {
2178 case AV_CODEC_ID_PCM_DVD:
2179 return 2 * (frame_bytes / ((bps * 2 / 8) * ch));
2180 case AV_CODEC_ID_PCM_BLURAY:
2181 return frame_bytes / ((FFALIGN(ch, 2) * bps) / 8);
2182 case AV_CODEC_ID_S302M:
2183 return 2 * (frame_bytes / ((bps + 4) / 4)) / ch;
2193 int ff_thread_init(AVCodecContext *s)
2200 unsigned int av_xiphlacing(unsigned char *s, unsigned int v)
2214 int ff_match_2uint16(const uint16_t(*tab)[2], int size, int a, int b)
2217 for (i = 0; i < size && !(tab[i][0] == a && tab[i][1] == b); i++) ;
2221 #if FF_API_MISSING_SAMPLE
2222 FF_DISABLE_DEPRECATION_WARNINGS
2223 void av_log_missing_feature(void *avc, const char *feature, int want_sample)
2225 av_log(avc, AV_LOG_WARNING, "%s is not implemented. Update your Libav "
2226 "version to the newest one from Git. If the problem still "
2227 "occurs, it means that your file has a feature which has not "
2228 "been implemented.\n", feature);
2230 av_log_ask_for_sample(avc, NULL);
2233 void av_log_ask_for_sample(void *avc, const char *msg, ...)
2235 va_list argument_list;
2237 va_start(argument_list, msg);
2240 av_vlog(avc, AV_LOG_WARNING, msg, argument_list);
2241 av_log(avc, AV_LOG_WARNING, "If you want to help, upload a sample "
2242 "of this file to ftp://upload.libav.org/incoming/ "
2243 "and contact the libav-devel mailing list.\n");
2245 va_end(argument_list);
2247 FF_ENABLE_DEPRECATION_WARNINGS
2248 #endif /* FF_API_MISSING_SAMPLE */
2250 static AVHWAccel *first_hwaccel = NULL;
2252 void av_register_hwaccel(AVHWAccel *hwaccel)
2254 AVHWAccel **p = &first_hwaccel;
2258 hwaccel->next = NULL;
2261 AVHWAccel *av_hwaccel_next(AVHWAccel *hwaccel)
2263 return hwaccel ? hwaccel->next : first_hwaccel;
2266 int av_lockmgr_register(int (*cb)(void **mutex, enum AVLockOp op))
2269 if (lockmgr_cb(&codec_mutex, AV_LOCK_DESTROY))
2271 if (lockmgr_cb(&avformat_mutex, AV_LOCK_DESTROY))
2278 if (lockmgr_cb(&codec_mutex, AV_LOCK_CREATE))
2280 if (lockmgr_cb(&avformat_mutex, AV_LOCK_CREATE))
2286 int avpriv_lock_avformat(void)
2289 if ((*lockmgr_cb)(&avformat_mutex, AV_LOCK_OBTAIN))
2295 int avpriv_unlock_avformat(void)
2298 if ((*lockmgr_cb)(&avformat_mutex, AV_LOCK_RELEASE))
2304 unsigned int avpriv_toupper4(unsigned int x)
2306 return av_toupper(x & 0xFF) +
2307 (av_toupper((x >> 8) & 0xFF) << 8) +
2308 (av_toupper((x >> 16) & 0xFF) << 16) +
2309 (av_toupper((x >> 24) & 0xFF) << 24);
2312 int ff_thread_ref_frame(ThreadFrame *dst, ThreadFrame *src)
2316 dst->owner = src->owner;
2318 ret = av_frame_ref(dst->f, src->f);
2322 if (src->progress &&
2323 !(dst->progress = av_buffer_ref(src->progress))) {
2324 ff_thread_release_buffer(dst->owner, dst);
2325 return AVERROR(ENOMEM);
2333 int ff_thread_get_buffer(AVCodecContext *avctx, ThreadFrame *f, int flags)
2336 return ff_get_buffer(avctx, f->f, flags);
2339 void ff_thread_release_buffer(AVCodecContext *avctx, ThreadFrame *f)
2342 av_frame_unref(f->f);
2345 void ff_thread_finish_setup(AVCodecContext *avctx)
2349 void ff_thread_report_progress(ThreadFrame *f, int progress, int field)
2353 void ff_thread_await_progress(ThreadFrame *f, int progress, int field)
2359 enum AVMediaType avcodec_get_type(enum AVCodecID codec_id)
2361 if (codec_id <= AV_CODEC_ID_NONE)
2362 return AVMEDIA_TYPE_UNKNOWN;
2363 else if (codec_id < AV_CODEC_ID_FIRST_AUDIO)
2364 return AVMEDIA_TYPE_VIDEO;
2365 else if (codec_id < AV_CODEC_ID_FIRST_SUBTITLE)
2366 return AVMEDIA_TYPE_AUDIO;
2367 else if (codec_id < AV_CODEC_ID_FIRST_UNKNOWN)
2368 return AVMEDIA_TYPE_SUBTITLE;
2370 return AVMEDIA_TYPE_UNKNOWN;
2373 int avcodec_is_open(AVCodecContext *s)
2375 return !!s->internal;
2378 const uint8_t *avpriv_find_start_code(const uint8_t *restrict p,
2380 uint32_t * restrict state)
2388 for (i = 0; i < 3; i++) {
2389 uint32_t tmp = *state << 8;
2390 *state = tmp + *(p++);
2391 if (tmp == 0x100 || p == end)
2396 if (p[-1] > 1 ) p += 3;
2397 else if (p[-2] ) p += 2;
2398 else if (p[-3]|(p[-1]-1)) p++;
2405 p = FFMIN(p, end) - 4;
2406 *state = AV_RB32(p);