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/hwcontext.h"
36 #include "libavutil/internal.h"
37 #include "libavutil/mathematics.h"
38 #include "libavutil/pixdesc.h"
39 #include "libavutil/imgutils.h"
40 #include "libavutil/samplefmt.h"
41 #include "libavutil/dict.h"
43 #include "libavutil/opt.h"
45 #include "mpegvideo.h"
48 #include "bytestream.h"
55 static int volatile entangled_thread_counter = 0;
56 static int (*lockmgr_cb)(void **mutex, enum AVLockOp op);
57 static void *codec_mutex;
58 static void *avformat_mutex;
60 void av_fast_padded_malloc(void *ptr, unsigned int *size, size_t min_size)
63 if (min_size > SIZE_MAX - AV_INPUT_BUFFER_PADDING_SIZE) {
68 av_fast_malloc(p, size, min_size + AV_INPUT_BUFFER_PADDING_SIZE);
70 memset((uint8_t *)*p + min_size, 0, AV_INPUT_BUFFER_PADDING_SIZE);
73 /* encoder management */
74 static AVCodec *first_avcodec = NULL;
76 AVCodec *av_codec_next(const AVCodec *c)
84 static av_cold void avcodec_init(void)
86 static int initialized = 0;
93 ff_me_cmp_init_static();
96 int av_codec_is_encoder(const AVCodec *codec)
98 return codec && (codec->encode_sub || codec->encode2 ||codec->send_frame);
101 int av_codec_is_decoder(const AVCodec *codec)
103 return codec && (codec->decode || codec->send_packet);
106 av_cold void avcodec_register(AVCodec *codec)
116 if (codec->init_static_data)
117 codec->init_static_data(codec);
121 unsigned avcodec_get_edge_width(void)
127 #if FF_API_SET_DIMENSIONS
128 void avcodec_set_dimensions(AVCodecContext *s, int width, int height)
130 ff_set_dimensions(s, width, height);
134 int ff_set_dimensions(AVCodecContext *s, int width, int height)
136 int ret = av_image_check_size(width, height, 0, s);
140 s->width = s->coded_width = width;
141 s->height = s->coded_height = height;
146 int ff_set_sar(AVCodecContext *avctx, AVRational sar)
148 int ret = av_image_check_sar(avctx->width, avctx->height, sar);
151 av_log(avctx, AV_LOG_WARNING, "ignoring invalid SAR: %d/%d\n",
153 avctx->sample_aspect_ratio = (AVRational){ 0, 1 };
156 avctx->sample_aspect_ratio = sar;
161 int ff_side_data_update_matrix_encoding(AVFrame *frame,
162 enum AVMatrixEncoding matrix_encoding)
164 AVFrameSideData *side_data;
165 enum AVMatrixEncoding *data;
167 side_data = av_frame_get_side_data(frame, AV_FRAME_DATA_MATRIXENCODING);
169 side_data = av_frame_new_side_data(frame, AV_FRAME_DATA_MATRIXENCODING,
170 sizeof(enum AVMatrixEncoding));
173 return AVERROR(ENOMEM);
175 data = (enum AVMatrixEncoding*)side_data->data;
176 *data = matrix_encoding;
181 #if HAVE_SIMD_ALIGN_16
182 # define STRIDE_ALIGN 16
184 # define STRIDE_ALIGN 8
187 void avcodec_align_dimensions2(AVCodecContext *s, int *width, int *height,
188 int linesize_align[AV_NUM_DATA_POINTERS])
194 switch (s->pix_fmt) {
195 case AV_PIX_FMT_YUV420P:
196 case AV_PIX_FMT_YUYV422:
197 case AV_PIX_FMT_YVYU422:
198 case AV_PIX_FMT_UYVY422:
199 case AV_PIX_FMT_YUV422P:
200 case AV_PIX_FMT_YUV440P:
201 case AV_PIX_FMT_YUV444P:
202 case AV_PIX_FMT_GBRP:
203 case AV_PIX_FMT_GBRAP:
204 case AV_PIX_FMT_GRAY8:
205 case AV_PIX_FMT_GRAY16BE:
206 case AV_PIX_FMT_GRAY16LE:
207 case AV_PIX_FMT_YUVJ420P:
208 case AV_PIX_FMT_YUVJ422P:
209 case AV_PIX_FMT_YUVJ440P:
210 case AV_PIX_FMT_YUVJ444P:
211 case AV_PIX_FMT_YUVA420P:
212 case AV_PIX_FMT_YUVA422P:
213 case AV_PIX_FMT_YUVA444P:
214 case AV_PIX_FMT_YUV420P9LE:
215 case AV_PIX_FMT_YUV420P9BE:
216 case AV_PIX_FMT_YUV420P10LE:
217 case AV_PIX_FMT_YUV420P10BE:
218 case AV_PIX_FMT_YUV422P9LE:
219 case AV_PIX_FMT_YUV422P9BE:
220 case AV_PIX_FMT_YUV422P10LE:
221 case AV_PIX_FMT_YUV422P10BE:
222 case AV_PIX_FMT_YUVA422P10LE:
223 case AV_PIX_FMT_YUVA422P10BE:
224 case AV_PIX_FMT_YUV444P9LE:
225 case AV_PIX_FMT_YUV444P9BE:
226 case AV_PIX_FMT_YUV444P10LE:
227 case AV_PIX_FMT_YUV444P10BE:
228 case AV_PIX_FMT_YUVA444P10LE:
229 case AV_PIX_FMT_YUVA444P10BE:
230 case AV_PIX_FMT_GBRP9LE:
231 case AV_PIX_FMT_GBRP9BE:
232 case AV_PIX_FMT_GBRP10LE:
233 case AV_PIX_FMT_GBRP10BE:
234 w_align = 16; //FIXME assume 16 pixel per macroblock
235 h_align = 16 * 2; // interlaced needs 2 macroblocks height
237 case AV_PIX_FMT_YUV411P:
238 case AV_PIX_FMT_UYYVYY411:
242 case AV_PIX_FMT_YUV410P:
243 if (s->codec_id == AV_CODEC_ID_SVQ1) {
247 case AV_PIX_FMT_RGB555:
248 if (s->codec_id == AV_CODEC_ID_RPZA) {
252 case AV_PIX_FMT_PAL8:
253 case AV_PIX_FMT_BGR8:
254 case AV_PIX_FMT_RGB8:
255 if (s->codec_id == AV_CODEC_ID_SMC) {
260 case AV_PIX_FMT_BGR24:
261 if ((s->codec_id == AV_CODEC_ID_MSZH) ||
262 (s->codec_id == AV_CODEC_ID_ZLIB)) {
273 *width = FFALIGN(*width, w_align);
274 *height = FFALIGN(*height, h_align);
275 if (s->codec_id == AV_CODEC_ID_H264)
276 // some of the optimized chroma MC reads one line too much
279 for (i = 0; i < 4; i++)
280 linesize_align[i] = STRIDE_ALIGN;
283 void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height)
285 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(s->pix_fmt);
286 int chroma_shift = desc->log2_chroma_w;
287 int linesize_align[AV_NUM_DATA_POINTERS];
290 avcodec_align_dimensions2(s, width, height, linesize_align);
291 align = FFMAX(linesize_align[0], linesize_align[3]);
292 linesize_align[1] <<= chroma_shift;
293 linesize_align[2] <<= chroma_shift;
294 align = FFMAX3(align, linesize_align[1], linesize_align[2]);
295 *width = FFALIGN(*width, align);
298 int avcodec_fill_audio_frame(AVFrame *frame, int nb_channels,
299 enum AVSampleFormat sample_fmt, const uint8_t *buf,
300 int buf_size, int align)
302 int ch, planar, needed_size, ret = 0;
304 needed_size = av_samples_get_buffer_size(NULL, nb_channels,
305 frame->nb_samples, sample_fmt,
307 if (buf_size < needed_size)
308 return AVERROR(EINVAL);
310 planar = av_sample_fmt_is_planar(sample_fmt);
311 if (planar && nb_channels > AV_NUM_DATA_POINTERS) {
312 if (!(frame->extended_data = av_mallocz(nb_channels *
313 sizeof(*frame->extended_data))))
314 return AVERROR(ENOMEM);
316 frame->extended_data = frame->data;
319 if ((ret = av_samples_fill_arrays(frame->extended_data, &frame->linesize[0],
320 buf, nb_channels, frame->nb_samples,
321 sample_fmt, align)) < 0) {
322 if (frame->extended_data != frame->data)
323 av_free(frame->extended_data);
326 if (frame->extended_data != frame->data) {
327 for (ch = 0; ch < AV_NUM_DATA_POINTERS; ch++)
328 frame->data[ch] = frame->extended_data[ch];
334 static int update_frame_pool(AVCodecContext *avctx, AVFrame *frame)
336 FramePool *pool = avctx->internal->pool;
339 switch (avctx->codec_type) {
340 case AVMEDIA_TYPE_VIDEO: {
344 int w = frame->width;
345 int h = frame->height;
346 int tmpsize, unaligned;
348 if (pool->format == frame->format &&
349 pool->width == frame->width && pool->height == frame->height)
352 avcodec_align_dimensions2(avctx, &w, &h, pool->stride_align);
355 // NOTE: do not align linesizes individually, this breaks e.g. assumptions
356 // that linesize[0] == 2*linesize[1] in the MPEG-encoder for 4:2:2
357 av_image_fill_linesizes(linesize, avctx->pix_fmt, w);
358 // increase alignment of w for next try (rhs gives the lowest bit set in w)
362 for (i = 0; i < 4; i++)
363 unaligned |= linesize[i] % pool->stride_align[i];
366 tmpsize = av_image_fill_pointers(data, avctx->pix_fmt, h,
371 for (i = 0; i < 3 && data[i + 1]; i++)
372 size[i] = data[i + 1] - data[i];
373 size[i] = tmpsize - (data[i] - data[0]);
375 for (i = 0; i < 4; i++) {
376 av_buffer_pool_uninit(&pool->pools[i]);
377 pool->linesize[i] = linesize[i];
379 pool->pools[i] = av_buffer_pool_init(size[i] + 16, NULL);
380 if (!pool->pools[i]) {
381 ret = AVERROR(ENOMEM);
386 pool->format = frame->format;
387 pool->width = frame->width;
388 pool->height = frame->height;
392 case AVMEDIA_TYPE_AUDIO: {
393 int ch = av_get_channel_layout_nb_channels(frame->channel_layout);
394 int planar = av_sample_fmt_is_planar(frame->format);
395 int planes = planar ? ch : 1;
397 if (pool->format == frame->format && pool->planes == planes &&
398 pool->channels == ch && frame->nb_samples == pool->samples)
401 av_buffer_pool_uninit(&pool->pools[0]);
402 ret = av_samples_get_buffer_size(&pool->linesize[0], ch,
403 frame->nb_samples, frame->format, 0);
407 pool->pools[0] = av_buffer_pool_init(pool->linesize[0], NULL);
408 if (!pool->pools[0]) {
409 ret = AVERROR(ENOMEM);
413 pool->format = frame->format;
414 pool->planes = planes;
416 pool->samples = frame->nb_samples;
419 default: av_assert0(0);
423 for (i = 0; i < 4; i++)
424 av_buffer_pool_uninit(&pool->pools[i]);
426 pool->planes = pool->channels = pool->samples = 0;
427 pool->width = pool->height = 0;
431 static int audio_get_buffer(AVCodecContext *avctx, AVFrame *frame)
433 FramePool *pool = avctx->internal->pool;
434 int planes = pool->planes;
437 frame->linesize[0] = pool->linesize[0];
439 if (planes > AV_NUM_DATA_POINTERS) {
440 frame->extended_data = av_mallocz(planes * sizeof(*frame->extended_data));
441 frame->nb_extended_buf = planes - AV_NUM_DATA_POINTERS;
442 frame->extended_buf = av_mallocz(frame->nb_extended_buf *
443 sizeof(*frame->extended_buf));
444 if (!frame->extended_data || !frame->extended_buf) {
445 av_freep(&frame->extended_data);
446 av_freep(&frame->extended_buf);
447 return AVERROR(ENOMEM);
450 frame->extended_data = frame->data;
452 for (i = 0; i < FFMIN(planes, AV_NUM_DATA_POINTERS); i++) {
453 frame->buf[i] = av_buffer_pool_get(pool->pools[0]);
456 frame->extended_data[i] = frame->data[i] = frame->buf[i]->data;
458 for (i = 0; i < frame->nb_extended_buf; i++) {
459 frame->extended_buf[i] = av_buffer_pool_get(pool->pools[0]);
460 if (!frame->extended_buf[i])
462 frame->extended_data[i + AV_NUM_DATA_POINTERS] = frame->extended_buf[i]->data;
465 if (avctx->debug & FF_DEBUG_BUFFERS)
466 av_log(avctx, AV_LOG_DEBUG, "default_get_buffer called on frame %p", frame);
470 av_frame_unref(frame);
471 return AVERROR(ENOMEM);
474 static int video_get_buffer(AVCodecContext *s, AVFrame *pic)
476 FramePool *pool = s->internal->pool;
480 av_log(s, AV_LOG_ERROR, "pic->data[0]!=NULL in avcodec_default_get_buffer\n");
484 memset(pic->data, 0, sizeof(pic->data));
485 pic->extended_data = pic->data;
487 for (i = 0; i < 4 && pool->pools[i]; i++) {
488 pic->linesize[i] = pool->linesize[i];
490 pic->buf[i] = av_buffer_pool_get(pool->pools[i]);
494 pic->data[i] = pic->buf[i]->data;
496 for (; i < AV_NUM_DATA_POINTERS; i++) {
498 pic->linesize[i] = 0;
500 if (pic->data[1] && !pic->data[2])
501 avpriv_set_systematic_pal2((uint32_t *)pic->data[1], s->pix_fmt);
503 if (s->debug & FF_DEBUG_BUFFERS)
504 av_log(s, AV_LOG_DEBUG, "default_get_buffer called on pic %p\n", pic);
509 return AVERROR(ENOMEM);
512 int avcodec_default_get_buffer2(AVCodecContext *avctx, AVFrame *frame, int flags)
516 if ((ret = update_frame_pool(avctx, frame)) < 0)
519 switch (avctx->codec_type) {
520 case AVMEDIA_TYPE_VIDEO:
521 return video_get_buffer(avctx, frame);
522 case AVMEDIA_TYPE_AUDIO:
523 return audio_get_buffer(avctx, frame);
529 int ff_decode_frame_props(AVCodecContext *avctx, AVFrame *frame)
531 AVPacket *pkt = avctx->internal->pkt;
534 enum AVPacketSideDataType packet;
535 enum AVFrameSideDataType frame;
537 { AV_PKT_DATA_REPLAYGAIN , AV_FRAME_DATA_REPLAYGAIN },
538 { AV_PKT_DATA_DISPLAYMATRIX, AV_FRAME_DATA_DISPLAYMATRIX },
539 { AV_PKT_DATA_STEREO3D, AV_FRAME_DATA_STEREO3D },
540 { AV_PKT_DATA_AUDIO_SERVICE_TYPE, AV_FRAME_DATA_AUDIO_SERVICE_TYPE },
543 frame->color_primaries = avctx->color_primaries;
544 frame->color_trc = avctx->color_trc;
545 frame->colorspace = avctx->colorspace;
546 frame->color_range = avctx->color_range;
547 frame->chroma_location = avctx->chroma_sample_location;
549 frame->reordered_opaque = avctx->reordered_opaque;
551 frame->pkt_pts = AV_NOPTS_VALUE;
555 frame->pkt_pts = pkt->pts;
557 for (i = 0; i < FF_ARRAY_ELEMS(sd); i++) {
559 uint8_t *packet_sd = av_packet_get_side_data(pkt, sd[i].packet, &size);
561 AVFrameSideData *frame_sd = av_frame_new_side_data(frame,
565 return AVERROR(ENOMEM);
567 memcpy(frame_sd->data, packet_sd, size);
574 int ff_get_buffer(AVCodecContext *avctx, AVFrame *frame, int flags)
576 const AVHWAccel *hwaccel = avctx->hwaccel;
577 int override_dimensions = 1;
580 switch (avctx->codec_type) {
581 case AVMEDIA_TYPE_VIDEO:
582 if (frame->width <= 0 || frame->height <= 0) {
583 frame->width = FFMAX(avctx->width, avctx->coded_width);
584 frame->height = FFMAX(avctx->height, avctx->coded_height);
585 override_dimensions = 0;
587 if (frame->format < 0)
588 frame->format = avctx->pix_fmt;
589 if (!frame->sample_aspect_ratio.num)
590 frame->sample_aspect_ratio = avctx->sample_aspect_ratio;
592 if (av_image_check_sar(frame->width, frame->height,
593 frame->sample_aspect_ratio) < 0) {
594 av_log(avctx, AV_LOG_WARNING, "ignoring invalid SAR: %u/%u\n",
595 frame->sample_aspect_ratio.num,
596 frame->sample_aspect_ratio.den);
597 frame->sample_aspect_ratio = (AVRational){ 0, 1 };
600 if ((ret = av_image_check_size(avctx->width, avctx->height, 0, avctx)) < 0)
603 case AVMEDIA_TYPE_AUDIO:
604 if (!frame->sample_rate)
605 frame->sample_rate = avctx->sample_rate;
606 if (frame->format < 0)
607 frame->format = avctx->sample_fmt;
608 if (!frame->channel_layout) {
609 if (avctx->channel_layout) {
610 if (av_get_channel_layout_nb_channels(avctx->channel_layout) !=
612 av_log(avctx, AV_LOG_ERROR, "Inconsistent channel "
614 return AVERROR(EINVAL);
617 frame->channel_layout = avctx->channel_layout;
619 if (avctx->channels > FF_SANE_NB_CHANNELS) {
620 av_log(avctx, AV_LOG_ERROR, "Too many channels: %d.\n",
622 return AVERROR(ENOSYS);
625 frame->channel_layout = av_get_default_channel_layout(avctx->channels);
626 if (!frame->channel_layout)
627 frame->channel_layout = (1ULL << avctx->channels) - 1;
631 default: return AVERROR(EINVAL);
634 ret = ff_decode_frame_props(avctx, frame);
639 if (hwaccel->alloc_frame) {
640 ret = hwaccel->alloc_frame(avctx, frame);
644 avctx->sw_pix_fmt = avctx->pix_fmt;
646 ret = avctx->get_buffer2(avctx, frame, flags);
649 if (avctx->codec_type == AVMEDIA_TYPE_VIDEO && !override_dimensions) {
650 frame->width = avctx->width;
651 frame->height = avctx->height;
657 int ff_reget_buffer(AVCodecContext *avctx, AVFrame *frame)
662 av_assert0(avctx->codec_type == AVMEDIA_TYPE_VIDEO);
665 return ff_get_buffer(avctx, frame, AV_GET_BUFFER_FLAG_REF);
667 if (av_frame_is_writable(frame))
668 return ff_decode_frame_props(avctx, frame);
670 tmp = av_frame_alloc();
672 return AVERROR(ENOMEM);
674 av_frame_move_ref(tmp, frame);
676 ret = ff_get_buffer(avctx, frame, AV_GET_BUFFER_FLAG_REF);
682 av_frame_copy(frame, tmp);
688 int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2), void *arg, int *ret, int count, int size)
692 for (i = 0; i < count; i++) {
693 int r = func(c, (char *)arg + i * size);
700 int avcodec_default_execute2(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2, int jobnr, int threadnr), void *arg, int *ret, int count)
704 for (i = 0; i < count; i++) {
705 int r = func(c, arg, i, 0);
712 static int is_hwaccel_pix_fmt(enum AVPixelFormat pix_fmt)
714 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
715 return desc->flags & AV_PIX_FMT_FLAG_HWACCEL;
718 enum AVPixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum AVPixelFormat *fmt)
720 while (*fmt != AV_PIX_FMT_NONE && is_hwaccel_pix_fmt(*fmt))
725 static AVHWAccel *find_hwaccel(enum AVCodecID codec_id,
726 enum AVPixelFormat pix_fmt)
728 AVHWAccel *hwaccel = NULL;
730 while ((hwaccel = av_hwaccel_next(hwaccel)))
731 if (hwaccel->id == codec_id
732 && hwaccel->pix_fmt == pix_fmt)
737 static int setup_hwaccel(AVCodecContext *avctx,
738 const enum AVPixelFormat fmt,
741 AVHWAccel *hwa = find_hwaccel(avctx->codec_id, fmt);
745 av_log(avctx, AV_LOG_ERROR,
746 "Could not find an AVHWAccel for the pixel format: %s",
748 return AVERROR(ENOENT);
751 if (hwa->priv_data_size) {
752 avctx->internal->hwaccel_priv_data = av_mallocz(hwa->priv_data_size);
753 if (!avctx->internal->hwaccel_priv_data)
754 return AVERROR(ENOMEM);
758 ret = hwa->init(avctx);
760 av_freep(&avctx->internal->hwaccel_priv_data);
765 avctx->hwaccel = hwa;
770 int ff_get_format(AVCodecContext *avctx, const enum AVPixelFormat *fmt)
772 const AVPixFmtDescriptor *desc;
773 enum AVPixelFormat *choices;
774 enum AVPixelFormat ret;
777 while (fmt[n] != AV_PIX_FMT_NONE)
781 avctx->sw_pix_fmt = fmt[n - 1];
782 av_assert2(!is_hwaccel_pix_fmt(avctx->sw_pix_fmt));
784 choices = av_malloc_array(n + 1, sizeof(*choices));
786 return AV_PIX_FMT_NONE;
788 memcpy(choices, fmt, (n + 1) * sizeof(*choices));
791 if (avctx->hwaccel && avctx->hwaccel->uninit)
792 avctx->hwaccel->uninit(avctx);
793 av_freep(&avctx->internal->hwaccel_priv_data);
794 avctx->hwaccel = NULL;
796 ret = avctx->get_format(avctx, choices);
798 desc = av_pix_fmt_desc_get(ret);
800 ret = AV_PIX_FMT_NONE;
804 if (!(desc->flags & AV_PIX_FMT_FLAG_HWACCEL))
807 if (!setup_hwaccel(avctx, ret, desc->name))
810 /* Remove failed hwaccel from choices */
811 for (n = 0; choices[n] != ret; n++)
812 av_assert0(choices[n] != AV_PIX_FMT_NONE);
815 choices[n] = choices[n + 1];
816 while (choices[n++] != AV_PIX_FMT_NONE);
823 int attribute_align_arg avcodec_open2(AVCodecContext *avctx, const AVCodec *codec, AVDictionary **options)
826 AVDictionary *tmp = NULL;
828 if (avcodec_is_open(avctx))
831 if ((!codec && !avctx->codec)) {
832 av_log(avctx, AV_LOG_ERROR, "No codec provided to avcodec_open2().\n");
833 return AVERROR(EINVAL);
835 if ((codec && avctx->codec && codec != avctx->codec)) {
836 av_log(avctx, AV_LOG_ERROR, "This AVCodecContext was allocated for %s, "
837 "but %s passed to avcodec_open2().\n", avctx->codec->name, codec->name);
838 return AVERROR(EINVAL);
841 codec = avctx->codec;
843 if (avctx->extradata_size < 0 || avctx->extradata_size >= FF_MAX_EXTRADATA_SIZE)
844 return AVERROR(EINVAL);
847 av_dict_copy(&tmp, *options, 0);
849 /* If there is a user-supplied mutex locking routine, call it. */
850 if (!(codec->caps_internal & FF_CODEC_CAP_INIT_THREADSAFE) && codec->init) {
852 if ((*lockmgr_cb)(&codec_mutex, AV_LOCK_OBTAIN))
856 entangled_thread_counter++;
857 if (entangled_thread_counter != 1) {
858 av_log(avctx, AV_LOG_ERROR,
859 "Insufficient thread locking. At least %d threads are "
860 "calling avcodec_open2() at the same time right now.\n",
861 entangled_thread_counter);
867 avctx->internal = av_mallocz(sizeof(AVCodecInternal));
868 if (!avctx->internal) {
869 ret = AVERROR(ENOMEM);
873 avctx->internal->pool = av_mallocz(sizeof(*avctx->internal->pool));
874 if (!avctx->internal->pool) {
875 ret = AVERROR(ENOMEM);
879 avctx->internal->to_free = av_frame_alloc();
880 if (!avctx->internal->to_free) {
881 ret = AVERROR(ENOMEM);
885 avctx->internal->buffer_frame = av_frame_alloc();
886 if (!avctx->internal->buffer_frame) {
887 ret = AVERROR(ENOMEM);
891 avctx->internal->buffer_pkt = av_packet_alloc();
892 if (!avctx->internal->buffer_pkt) {
893 ret = AVERROR(ENOMEM);
897 if (codec->priv_data_size > 0) {
898 if (!avctx->priv_data) {
899 avctx->priv_data = av_mallocz(codec->priv_data_size);
900 if (!avctx->priv_data) {
901 ret = AVERROR(ENOMEM);
904 if (codec->priv_class) {
905 *(const AVClass **)avctx->priv_data = codec->priv_class;
906 av_opt_set_defaults(avctx->priv_data);
909 if (codec->priv_class && (ret = av_opt_set_dict(avctx->priv_data, &tmp)) < 0)
912 avctx->priv_data = NULL;
914 if ((ret = av_opt_set_dict(avctx, &tmp)) < 0)
917 if (avctx->coded_width && avctx->coded_height && !avctx->width && !avctx->height)
918 ret = ff_set_dimensions(avctx, avctx->coded_width, avctx->coded_height);
919 else if (avctx->width && avctx->height)
920 ret = ff_set_dimensions(avctx, avctx->width, avctx->height);
924 if ((avctx->coded_width || avctx->coded_height || avctx->width || avctx->height)
925 && ( av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx) < 0
926 || av_image_check_size(avctx->width, avctx->height, 0, avctx) < 0)) {
927 av_log(avctx, AV_LOG_WARNING, "ignoring invalid width/height values\n");
928 ff_set_dimensions(avctx, 0, 0);
931 if (avctx->width > 0 && avctx->height > 0) {
932 if (av_image_check_sar(avctx->width, avctx->height,
933 avctx->sample_aspect_ratio) < 0) {
934 av_log(avctx, AV_LOG_WARNING, "ignoring invalid SAR: %u/%u\n",
935 avctx->sample_aspect_ratio.num,
936 avctx->sample_aspect_ratio.den);
937 avctx->sample_aspect_ratio = (AVRational){ 0, 1 };
941 /* if the decoder init function was already called previously,
942 * free the already allocated subtitle_header before overwriting it */
943 if (av_codec_is_decoder(codec))
944 av_freep(&avctx->subtitle_header);
946 if (avctx->channels > FF_SANE_NB_CHANNELS) {
947 ret = AVERROR(EINVAL);
951 avctx->codec = codec;
952 if ((avctx->codec_type == AVMEDIA_TYPE_UNKNOWN || avctx->codec_type == codec->type) &&
953 avctx->codec_id == AV_CODEC_ID_NONE) {
954 avctx->codec_type = codec->type;
955 avctx->codec_id = codec->id;
957 if (avctx->codec_id != codec->id || (avctx->codec_type != codec->type
958 && avctx->codec_type != AVMEDIA_TYPE_ATTACHMENT)) {
959 av_log(avctx, AV_LOG_ERROR, "codec type or id mismatches\n");
960 ret = AVERROR(EINVAL);
963 avctx->frame_number = 0;
965 if ((avctx->codec->capabilities & AV_CODEC_CAP_EXPERIMENTAL) &&
966 avctx->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
967 ret = AVERROR_EXPERIMENTAL;
971 if (avctx->codec_type == AVMEDIA_TYPE_AUDIO &&
972 (!avctx->time_base.num || !avctx->time_base.den)) {
973 avctx->time_base.num = 1;
974 avctx->time_base.den = avctx->sample_rate;
978 ret = ff_thread_init(avctx);
983 if (!HAVE_THREADS && !(codec->capabilities & AV_CODEC_CAP_AUTO_THREADS))
984 avctx->thread_count = 1;
986 if (av_codec_is_encoder(avctx->codec)) {
988 #if FF_API_CODED_FRAME
989 FF_DISABLE_DEPRECATION_WARNINGS
990 avctx->coded_frame = av_frame_alloc();
991 if (!avctx->coded_frame) {
992 ret = AVERROR(ENOMEM);
995 FF_ENABLE_DEPRECATION_WARNINGS
997 if (avctx->codec->sample_fmts) {
998 for (i = 0; avctx->codec->sample_fmts[i] != AV_SAMPLE_FMT_NONE; i++) {
999 if (avctx->sample_fmt == avctx->codec->sample_fmts[i])
1001 if (avctx->channels == 1 &&
1002 av_get_planar_sample_fmt(avctx->sample_fmt) ==
1003 av_get_planar_sample_fmt(avctx->codec->sample_fmts[i])) {
1004 avctx->sample_fmt = avctx->codec->sample_fmts[i];
1008 if (avctx->codec->sample_fmts[i] == AV_SAMPLE_FMT_NONE) {
1009 av_log(avctx, AV_LOG_ERROR, "Specified sample_fmt is not supported.\n");
1010 ret = AVERROR(EINVAL);
1014 if (avctx->codec->pix_fmts) {
1015 for (i = 0; avctx->codec->pix_fmts[i] != AV_PIX_FMT_NONE; i++)
1016 if (avctx->pix_fmt == avctx->codec->pix_fmts[i])
1018 if (avctx->codec->pix_fmts[i] == AV_PIX_FMT_NONE) {
1019 av_log(avctx, AV_LOG_ERROR, "Specified pix_fmt is not supported\n");
1020 ret = AVERROR(EINVAL);
1023 if (avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ420P ||
1024 avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ422P ||
1025 avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ440P ||
1026 avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ444P)
1027 avctx->color_range = AVCOL_RANGE_JPEG;
1029 if (avctx->codec->supported_samplerates) {
1030 for (i = 0; avctx->codec->supported_samplerates[i] != 0; i++)
1031 if (avctx->sample_rate == avctx->codec->supported_samplerates[i])
1033 if (avctx->codec->supported_samplerates[i] == 0) {
1034 av_log(avctx, AV_LOG_ERROR, "Specified sample_rate is not supported\n");
1035 ret = AVERROR(EINVAL);
1039 if (avctx->codec->channel_layouts) {
1040 if (!avctx->channel_layout) {
1041 av_log(avctx, AV_LOG_WARNING, "channel_layout not specified\n");
1043 for (i = 0; avctx->codec->channel_layouts[i] != 0; i++)
1044 if (avctx->channel_layout == avctx->codec->channel_layouts[i])
1046 if (avctx->codec->channel_layouts[i] == 0) {
1047 av_log(avctx, AV_LOG_ERROR, "Specified channel_layout is not supported\n");
1048 ret = AVERROR(EINVAL);
1053 if (avctx->channel_layout && avctx->channels) {
1054 if (av_get_channel_layout_nb_channels(avctx->channel_layout) != avctx->channels) {
1055 av_log(avctx, AV_LOG_ERROR, "channel layout does not match number of channels\n");
1056 ret = AVERROR(EINVAL);
1059 } else if (avctx->channel_layout) {
1060 avctx->channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
1063 if (!avctx->rc_initial_buffer_occupancy)
1064 avctx->rc_initial_buffer_occupancy = avctx->rc_buffer_size * 3 / 4;
1066 if (avctx->ticks_per_frame &&
1067 avctx->ticks_per_frame > INT_MAX / avctx->time_base.num) {
1068 av_log(avctx, AV_LOG_ERROR,
1069 "ticks_per_frame %d too large for the timebase %d/%d.",
1070 avctx->ticks_per_frame,
1071 avctx->time_base.num,
1072 avctx->time_base.den);
1076 if (avctx->hw_frames_ctx) {
1077 AVHWFramesContext *frames_ctx = (AVHWFramesContext*)avctx->hw_frames_ctx->data;
1078 if (frames_ctx->format != avctx->pix_fmt) {
1079 av_log(avctx, AV_LOG_ERROR,
1080 "Mismatching AVCodecContext.pix_fmt and AVHWFramesContext.format\n");
1081 ret = AVERROR(EINVAL);
1087 if (avctx->codec->init && !(avctx->active_thread_type & FF_THREAD_FRAME)) {
1088 ret = avctx->codec->init(avctx);
1094 #if FF_API_AUDIOENC_DELAY
1095 if (av_codec_is_encoder(avctx->codec))
1096 avctx->delay = avctx->initial_padding;
1099 if (av_codec_is_decoder(avctx->codec)) {
1100 /* validate channel layout from the decoder */
1101 if (avctx->channel_layout) {
1102 int channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
1103 if (!avctx->channels)
1104 avctx->channels = channels;
1105 else if (channels != avctx->channels) {
1106 av_log(avctx, AV_LOG_WARNING,
1107 "channel layout does not match number of channels\n");
1108 avctx->channel_layout = 0;
1111 if (avctx->channels && avctx->channels < 0 ||
1112 avctx->channels > FF_SANE_NB_CHANNELS) {
1113 ret = AVERROR(EINVAL);
1117 #if FF_API_AVCTX_TIMEBASE
1118 if (avctx->framerate.num > 0 && avctx->framerate.den > 0)
1119 avctx->time_base = av_inv_q(avctx->framerate);
1123 if (!(codec->caps_internal & FF_CODEC_CAP_INIT_THREADSAFE) && codec->init) {
1124 entangled_thread_counter--;
1126 /* Release any user-supplied mutex. */
1128 (*lockmgr_cb)(&codec_mutex, AV_LOCK_RELEASE);
1133 av_dict_free(options);
1140 (avctx->codec->caps_internal & FF_CODEC_CAP_INIT_CLEANUP))
1141 avctx->codec->close(avctx);
1143 if (avctx->priv_data && avctx->codec && avctx->codec->priv_class)
1144 av_opt_free(avctx->priv_data);
1147 #if FF_API_CODED_FRAME
1148 FF_DISABLE_DEPRECATION_WARNINGS
1149 av_frame_free(&avctx->coded_frame);
1150 FF_ENABLE_DEPRECATION_WARNINGS
1154 av_freep(&avctx->priv_data);
1155 if (avctx->internal) {
1156 av_frame_free(&avctx->internal->to_free);
1157 av_freep(&avctx->internal->pool);
1159 av_freep(&avctx->internal);
1160 avctx->codec = NULL;
1164 int ff_alloc_packet(AVPacket *avpkt, int size)
1166 if (size > INT_MAX - AV_INPUT_BUFFER_PADDING_SIZE)
1167 return AVERROR(EINVAL);
1170 AVBufferRef *buf = avpkt->buf;
1172 if (avpkt->size < size)
1173 return AVERROR(EINVAL);
1175 av_init_packet(avpkt);
1180 return av_new_packet(avpkt, size);
1185 * Pad last frame with silence.
1187 static int pad_last_frame(AVCodecContext *s, AVFrame **dst, const AVFrame *src)
1189 AVFrame *frame = NULL;
1192 if (!(frame = av_frame_alloc()))
1193 return AVERROR(ENOMEM);
1195 frame->format = src->format;
1196 frame->channel_layout = src->channel_layout;
1197 frame->nb_samples = s->frame_size;
1198 ret = av_frame_get_buffer(frame, 32);
1202 ret = av_frame_copy_props(frame, src);
1206 if ((ret = av_samples_copy(frame->extended_data, src->extended_data, 0, 0,
1207 src->nb_samples, s->channels, s->sample_fmt)) < 0)
1209 if ((ret = av_samples_set_silence(frame->extended_data, src->nb_samples,
1210 frame->nb_samples - src->nb_samples,
1211 s->channels, s->sample_fmt)) < 0)
1219 av_frame_free(&frame);
1223 int attribute_align_arg avcodec_encode_audio2(AVCodecContext *avctx,
1225 const AVFrame *frame,
1226 int *got_packet_ptr)
1229 AVFrame *padded_frame = NULL;
1231 int user_packet = !!avpkt->data;
1233 *got_packet_ptr = 0;
1235 if (!avctx->codec->encode2) {
1236 av_log(avctx, AV_LOG_ERROR, "This encoder requires using the avcodec_send_frame() API.\n");
1237 return AVERROR(ENOSYS);
1240 if (!(avctx->codec->capabilities & AV_CODEC_CAP_DELAY) && !frame) {
1241 av_packet_unref(avpkt);
1242 av_init_packet(avpkt);
1246 /* ensure that extended_data is properly set */
1247 if (frame && !frame->extended_data) {
1248 if (av_sample_fmt_is_planar(avctx->sample_fmt) &&
1249 avctx->channels > AV_NUM_DATA_POINTERS) {
1250 av_log(avctx, AV_LOG_ERROR, "Encoding to a planar sample format, "
1251 "with more than %d channels, but extended_data is not set.\n",
1252 AV_NUM_DATA_POINTERS);
1253 return AVERROR(EINVAL);
1255 av_log(avctx, AV_LOG_WARNING, "extended_data is not set.\n");
1258 tmp.extended_data = tmp.data;
1262 /* extract audio service type metadata */
1264 AVFrameSideData *sd = av_frame_get_side_data(frame, AV_FRAME_DATA_AUDIO_SERVICE_TYPE);
1265 if (sd && sd->size >= sizeof(enum AVAudioServiceType))
1266 avctx->audio_service_type = *(enum AVAudioServiceType*)sd->data;
1269 /* check for valid frame size */
1271 if (avctx->codec->capabilities & AV_CODEC_CAP_SMALL_LAST_FRAME) {
1272 if (frame->nb_samples > avctx->frame_size)
1273 return AVERROR(EINVAL);
1274 } else if (!(avctx->codec->capabilities & AV_CODEC_CAP_VARIABLE_FRAME_SIZE)) {
1275 if (frame->nb_samples < avctx->frame_size &&
1276 !avctx->internal->last_audio_frame) {
1277 ret = pad_last_frame(avctx, &padded_frame, frame);
1281 frame = padded_frame;
1282 avctx->internal->last_audio_frame = 1;
1285 if (frame->nb_samples != avctx->frame_size) {
1286 ret = AVERROR(EINVAL);
1292 ret = avctx->codec->encode2(avctx, avpkt, frame, got_packet_ptr);
1294 if (*got_packet_ptr) {
1295 if (!(avctx->codec->capabilities & AV_CODEC_CAP_DELAY)) {
1296 if (avpkt->pts == AV_NOPTS_VALUE)
1297 avpkt->pts = frame->pts;
1298 if (!avpkt->duration)
1299 avpkt->duration = ff_samples_to_time_base(avctx,
1302 avpkt->dts = avpkt->pts;
1307 if (!user_packet && avpkt->size) {
1308 ret = av_buffer_realloc(&avpkt->buf, avpkt->size);
1310 avpkt->data = avpkt->buf->data;
1313 avctx->frame_number++;
1316 if (ret < 0 || !*got_packet_ptr) {
1317 av_packet_unref(avpkt);
1318 av_init_packet(avpkt);
1322 /* NOTE: if we add any audio encoders which output non-keyframe packets,
1323 * this needs to be moved to the encoders, but for now we can do it
1324 * here to simplify things */
1325 avpkt->flags |= AV_PKT_FLAG_KEY;
1328 av_frame_free(&padded_frame);
1330 #if FF_API_AUDIOENC_DELAY
1331 avctx->delay = avctx->initial_padding;
1337 int attribute_align_arg avcodec_encode_video2(AVCodecContext *avctx,
1339 const AVFrame *frame,
1340 int *got_packet_ptr)
1343 int user_packet = !!avpkt->data;
1345 *got_packet_ptr = 0;
1347 if (!avctx->codec->encode2) {
1348 av_log(avctx, AV_LOG_ERROR, "This encoder requires using the avcodec_send_frame() API.\n");
1349 return AVERROR(ENOSYS);
1352 if (!(avctx->codec->capabilities & AV_CODEC_CAP_DELAY) && !frame) {
1353 av_packet_unref(avpkt);
1354 av_init_packet(avpkt);
1359 if (av_image_check_size(avctx->width, avctx->height, 0, avctx))
1360 return AVERROR(EINVAL);
1362 av_assert0(avctx->codec->encode2);
1364 ret = avctx->codec->encode2(avctx, avpkt, frame, got_packet_ptr);
1366 if (!*got_packet_ptr)
1368 else if (!(avctx->codec->capabilities & AV_CODEC_CAP_DELAY))
1369 avpkt->pts = avpkt->dts = frame->pts;
1371 if (!user_packet && avpkt->size) {
1372 ret = av_buffer_realloc(&avpkt->buf, avpkt->size);
1374 avpkt->data = avpkt->buf->data;
1377 avctx->frame_number++;
1380 if (ret < 0 || !*got_packet_ptr)
1381 av_packet_unref(avpkt);
1387 int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size,
1388 const AVSubtitle *sub)
1391 if (sub->start_display_time) {
1392 av_log(avctx, AV_LOG_ERROR, "start_display_time must be 0.\n");
1395 if (sub->num_rects == 0 || !sub->rects)
1397 ret = avctx->codec->encode_sub(avctx, buf, buf_size, sub);
1398 avctx->frame_number++;
1402 static int apply_param_change(AVCodecContext *avctx, AVPacket *avpkt)
1405 const uint8_t *data;
1408 data = av_packet_get_side_data(avpkt, AV_PKT_DATA_PARAM_CHANGE, &size);
1412 if (!(avctx->codec->capabilities & AV_CODEC_CAP_PARAM_CHANGE)) {
1413 av_log(avctx, AV_LOG_ERROR, "This decoder does not support parameter "
1414 "changes, but PARAM_CHANGE side data was sent to it.\n");
1415 ret = AVERROR(EINVAL);
1422 flags = bytestream_get_le32(&data);
1425 if (flags & AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_COUNT) {
1428 avctx->channels = bytestream_get_le32(&data);
1431 if (flags & AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_LAYOUT) {
1434 avctx->channel_layout = bytestream_get_le64(&data);
1437 if (flags & AV_SIDE_DATA_PARAM_CHANGE_SAMPLE_RATE) {
1440 avctx->sample_rate = bytestream_get_le32(&data);
1443 if (flags & AV_SIDE_DATA_PARAM_CHANGE_DIMENSIONS) {
1446 avctx->width = bytestream_get_le32(&data);
1447 avctx->height = bytestream_get_le32(&data);
1449 ret = ff_set_dimensions(avctx, avctx->width, avctx->height);
1456 av_log(avctx, AV_LOG_ERROR, "PARAM_CHANGE side data too small.\n");
1457 ret = AVERROR_INVALIDDATA;
1460 av_log(avctx, AV_LOG_ERROR, "Error applying parameter changes.\n");
1461 if (avctx->err_recognition & AV_EF_EXPLODE)
1467 static int unrefcount_frame(AVCodecInternal *avci, AVFrame *frame)
1471 /* move the original frame to our backup */
1472 av_frame_unref(avci->to_free);
1473 av_frame_move_ref(avci->to_free, frame);
1475 /* now copy everything except the AVBufferRefs back
1476 * note that we make a COPY of the side data, so calling av_frame_free() on
1477 * the caller's frame will work properly */
1478 ret = av_frame_copy_props(frame, avci->to_free);
1482 memcpy(frame->data, avci->to_free->data, sizeof(frame->data));
1483 memcpy(frame->linesize, avci->to_free->linesize, sizeof(frame->linesize));
1484 if (avci->to_free->extended_data != avci->to_free->data) {
1485 int planes = av_get_channel_layout_nb_channels(avci->to_free->channel_layout);
1486 int size = planes * sizeof(*frame->extended_data);
1489 av_frame_unref(frame);
1493 frame->extended_data = av_malloc(size);
1494 if (!frame->extended_data) {
1495 av_frame_unref(frame);
1496 return AVERROR(ENOMEM);
1498 memcpy(frame->extended_data, avci->to_free->extended_data,
1501 frame->extended_data = frame->data;
1503 frame->format = avci->to_free->format;
1504 frame->width = avci->to_free->width;
1505 frame->height = avci->to_free->height;
1506 frame->channel_layout = avci->to_free->channel_layout;
1507 frame->nb_samples = avci->to_free->nb_samples;
1512 int attribute_align_arg avcodec_decode_video2(AVCodecContext *avctx, AVFrame *picture,
1513 int *got_picture_ptr,
1516 AVCodecInternal *avci = avctx->internal;
1519 *got_picture_ptr = 0;
1520 if ((avctx->coded_width || avctx->coded_height) && av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx))
1523 if (!avctx->codec->decode) {
1524 av_log(avctx, AV_LOG_ERROR, "This decoder requires using the avcodec_send_packet() API.\n");
1525 return AVERROR(ENOSYS);
1528 avctx->internal->pkt = avpkt;
1529 ret = apply_param_change(avctx, avpkt);
1533 av_frame_unref(picture);
1535 if ((avctx->codec->capabilities & AV_CODEC_CAP_DELAY) || avpkt->size ||
1536 (avctx->active_thread_type & FF_THREAD_FRAME)) {
1537 if (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME)
1538 ret = ff_thread_decode_frame(avctx, picture, got_picture_ptr,
1541 ret = avctx->codec->decode(avctx, picture, got_picture_ptr,
1543 if (!(avctx->codec->caps_internal & FF_CODEC_CAP_SETS_PKT_DTS))
1544 picture->pkt_dts = avpkt->dts;
1545 /* get_buffer is supposed to set frame parameters */
1546 if (!(avctx->codec->capabilities & AV_CODEC_CAP_DR1)) {
1547 picture->sample_aspect_ratio = avctx->sample_aspect_ratio;
1548 picture->width = avctx->width;
1549 picture->height = avctx->height;
1550 picture->format = avctx->pix_fmt;
1554 emms_c(); //needed to avoid an emms_c() call before every return;
1556 if (*got_picture_ptr) {
1557 if (!avctx->refcounted_frames) {
1558 int err = unrefcount_frame(avci, picture);
1563 avctx->frame_number++;
1565 av_frame_unref(picture);
1569 #if FF_API_AVCTX_TIMEBASE
1570 if (avctx->framerate.num > 0 && avctx->framerate.den > 0)
1571 avctx->time_base = av_inv_q(avctx->framerate);
1577 int attribute_align_arg avcodec_decode_audio4(AVCodecContext *avctx,
1582 AVCodecInternal *avci = avctx->internal;
1587 if (!avctx->codec->decode) {
1588 av_log(avctx, AV_LOG_ERROR, "This decoder requires using the avcodec_send_packet() API.\n");
1589 return AVERROR(ENOSYS);
1592 avctx->internal->pkt = avpkt;
1594 if (!avpkt->data && avpkt->size) {
1595 av_log(avctx, AV_LOG_ERROR, "invalid packet: NULL data, size != 0\n");
1596 return AVERROR(EINVAL);
1599 ret = apply_param_change(avctx, avpkt);
1603 av_frame_unref(frame);
1605 if ((avctx->codec->capabilities & AV_CODEC_CAP_DELAY) || avpkt->size) {
1606 ret = avctx->codec->decode(avctx, frame, got_frame_ptr, avpkt);
1607 if (ret >= 0 && *got_frame_ptr) {
1608 avctx->frame_number++;
1609 frame->pkt_dts = avpkt->dts;
1610 if (frame->format == AV_SAMPLE_FMT_NONE)
1611 frame->format = avctx->sample_fmt;
1613 if (!avctx->refcounted_frames) {
1614 int err = unrefcount_frame(avci, frame);
1619 av_frame_unref(frame);
1626 int avcodec_decode_subtitle2(AVCodecContext *avctx, AVSubtitle *sub,
1632 avctx->internal->pkt = avpkt;
1634 ret = avctx->codec->decode(avctx, sub, got_sub_ptr, avpkt);
1636 avctx->frame_number++;
1640 void avsubtitle_free(AVSubtitle *sub)
1644 for (i = 0; i < sub->num_rects; i++) {
1645 av_freep(&sub->rects[i]->data[0]);
1646 av_freep(&sub->rects[i]->data[1]);
1647 av_freep(&sub->rects[i]->data[2]);
1648 av_freep(&sub->rects[i]->data[3]);
1649 av_freep(&sub->rects[i]->text);
1650 av_freep(&sub->rects[i]->ass);
1651 av_freep(&sub->rects[i]);
1654 av_freep(&sub->rects);
1656 memset(sub, 0, sizeof(AVSubtitle));
1659 static int do_decode(AVCodecContext *avctx, AVPacket *pkt)
1664 av_assert0(!avctx->internal->buffer_frame->buf[0]);
1667 pkt = avctx->internal->buffer_pkt;
1669 // This is the lesser evil. The field is for compatibility with legacy users
1670 // of the legacy API, and users using the new API should not be forced to
1671 // even know about this field.
1672 avctx->refcounted_frames = 1;
1674 // Some codecs (at least wma lossless) will crash when feeding drain packets
1675 // after EOF was signaled.
1676 if (avctx->internal->draining_done)
1679 if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
1680 ret = avcodec_decode_video2(avctx, avctx->internal->buffer_frame,
1684 } else if (avctx->codec_type == AVMEDIA_TYPE_AUDIO) {
1685 ret = avcodec_decode_audio4(avctx, avctx->internal->buffer_frame,
1688 ret = AVERROR(EINVAL);
1694 if (avctx->internal->draining && !got_frame)
1695 avctx->internal->draining_done = 1;
1697 if (ret >= pkt->size) {
1698 av_packet_unref(avctx->internal->buffer_pkt);
1702 if (pkt != avctx->internal->buffer_pkt) {
1703 av_packet_unref(avctx->internal->buffer_pkt);
1704 if ((ret = av_packet_ref(avctx->internal->buffer_pkt, pkt)) < 0)
1708 avctx->internal->buffer_pkt->data += consumed;
1709 avctx->internal->buffer_pkt->size -= consumed;
1710 avctx->internal->buffer_pkt->pts = AV_NOPTS_VALUE;
1711 avctx->internal->buffer_pkt->dts = AV_NOPTS_VALUE;
1715 av_assert0(avctx->internal->buffer_frame->buf[0]);
1720 int attribute_align_arg avcodec_send_packet(AVCodecContext *avctx, const AVPacket *avpkt)
1724 if (!avcodec_is_open(avctx) || !av_codec_is_decoder(avctx->codec))
1725 return AVERROR(EINVAL);
1727 if (avctx->internal->draining)
1730 if (!avpkt || !avpkt->size) {
1731 avctx->internal->draining = 1;
1734 if (!(avctx->codec->capabilities & AV_CODEC_CAP_DELAY))
1738 if (avctx->codec->send_packet) {
1740 ret = apply_param_change(avctx, (AVPacket *)avpkt);
1744 return avctx->codec->send_packet(avctx, avpkt);
1747 // Emulation via old API. Assume avpkt is likely not refcounted, while
1748 // decoder output is always refcounted, and avoid copying.
1750 if (avctx->internal->buffer_pkt->size || avctx->internal->buffer_frame->buf[0])
1751 return AVERROR(EAGAIN);
1753 // The goal is decoding the first frame of the packet without using memcpy,
1754 // because the common case is having only 1 frame per packet (especially
1755 // with video, but audio too). In other cases, it can't be avoided, unless
1756 // the user is feeding refcounted packets.
1757 return do_decode(avctx, (AVPacket *)avpkt);
1760 int attribute_align_arg avcodec_receive_frame(AVCodecContext *avctx, AVFrame *frame)
1764 av_frame_unref(frame);
1766 if (!avcodec_is_open(avctx) || !av_codec_is_decoder(avctx->codec))
1767 return AVERROR(EINVAL);
1769 if (avctx->codec->receive_frame) {
1770 if (avctx->internal->draining && !(avctx->codec->capabilities & AV_CODEC_CAP_DELAY))
1772 return avctx->codec->receive_frame(avctx, frame);
1775 // Emulation via old API.
1777 if (!avctx->internal->buffer_frame->buf[0]) {
1778 if (!avctx->internal->buffer_pkt->size && !avctx->internal->draining)
1779 return AVERROR(EAGAIN);
1782 if ((ret = do_decode(avctx, avctx->internal->buffer_pkt)) < 0) {
1783 av_packet_unref(avctx->internal->buffer_pkt);
1786 // Some audio decoders may consume partial data without returning
1787 // a frame (fate-wmapro-2ch). There is no way to make the caller
1788 // call avcodec_receive_frame() again without returning a frame,
1789 // so try to decode more in these cases.
1790 if (avctx->internal->buffer_frame->buf[0] ||
1791 !avctx->internal->buffer_pkt->size)
1796 if (!avctx->internal->buffer_frame->buf[0])
1797 return avctx->internal->draining ? AVERROR_EOF : AVERROR(EAGAIN);
1799 av_frame_move_ref(frame, avctx->internal->buffer_frame);
1803 static int do_encode(AVCodecContext *avctx, const AVFrame *frame, int *got_packet)
1808 av_packet_unref(avctx->internal->buffer_pkt);
1809 avctx->internal->buffer_pkt_valid = 0;
1811 if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
1812 ret = avcodec_encode_video2(avctx, avctx->internal->buffer_pkt,
1814 } else if (avctx->codec_type == AVMEDIA_TYPE_AUDIO) {
1815 ret = avcodec_encode_audio2(avctx, avctx->internal->buffer_pkt,
1818 ret = AVERROR(EINVAL);
1821 if (ret >= 0 && *got_packet) {
1822 // Encoders must always return ref-counted buffers.
1823 // Side-data only packets have no data and can be not ref-counted.
1824 av_assert0(!avctx->internal->buffer_pkt->data || avctx->internal->buffer_pkt->buf);
1825 avctx->internal->buffer_pkt_valid = 1;
1828 av_packet_unref(avctx->internal->buffer_pkt);
1834 int attribute_align_arg avcodec_send_frame(AVCodecContext *avctx, const AVFrame *frame)
1836 if (!avcodec_is_open(avctx) || !av_codec_is_encoder(avctx->codec))
1837 return AVERROR(EINVAL);
1839 if (avctx->internal->draining)
1843 avctx->internal->draining = 1;
1845 if (!(avctx->codec->capabilities & AV_CODEC_CAP_DELAY))
1849 if (avctx->codec->send_frame)
1850 return avctx->codec->send_frame(avctx, frame);
1852 // Emulation via old API. Do it here instead of avcodec_receive_packet, because:
1853 // 1. if the AVFrame is not refcounted, the copying will be much more
1854 // expensive than copying the packet data
1855 // 2. assume few users use non-refcounted AVPackets, so usually no copy is
1858 if (avctx->internal->buffer_pkt_valid)
1859 return AVERROR(EAGAIN);
1861 return do_encode(avctx, frame, &(int){0});
1864 int attribute_align_arg avcodec_receive_packet(AVCodecContext *avctx, AVPacket *avpkt)
1866 av_packet_unref(avpkt);
1868 if (!avcodec_is_open(avctx) || !av_codec_is_encoder(avctx->codec))
1869 return AVERROR(EINVAL);
1871 if (avctx->codec->receive_packet) {
1872 if (avctx->internal->draining && !(avctx->codec->capabilities & AV_CODEC_CAP_DELAY))
1874 return avctx->codec->receive_packet(avctx, avpkt);
1877 // Emulation via old API.
1879 if (!avctx->internal->buffer_pkt_valid) {
1882 if (!avctx->internal->draining)
1883 return AVERROR(EAGAIN);
1884 ret = do_encode(avctx, NULL, &got_packet);
1887 if (ret >= 0 && !got_packet)
1891 av_packet_move_ref(avpkt, avctx->internal->buffer_pkt);
1892 avctx->internal->buffer_pkt_valid = 0;
1896 av_cold int avcodec_close(AVCodecContext *avctx)
1900 if (avcodec_is_open(avctx)) {
1901 FramePool *pool = avctx->internal->pool;
1903 if (HAVE_THREADS && avctx->internal->thread_ctx)
1904 ff_thread_free(avctx);
1905 if (avctx->codec && avctx->codec->close)
1906 avctx->codec->close(avctx);
1907 av_frame_free(&avctx->internal->to_free);
1908 av_frame_free(&avctx->internal->buffer_frame);
1909 av_packet_free(&avctx->internal->buffer_pkt);
1910 for (i = 0; i < FF_ARRAY_ELEMS(pool->pools); i++)
1911 av_buffer_pool_uninit(&pool->pools[i]);
1912 av_freep(&avctx->internal->pool);
1914 if (avctx->hwaccel && avctx->hwaccel->uninit)
1915 avctx->hwaccel->uninit(avctx);
1916 av_freep(&avctx->internal->hwaccel_priv_data);
1918 av_freep(&avctx->internal);
1921 for (i = 0; i < avctx->nb_coded_side_data; i++)
1922 av_freep(&avctx->coded_side_data[i].data);
1923 av_freep(&avctx->coded_side_data);
1924 avctx->nb_coded_side_data = 0;
1926 av_buffer_unref(&avctx->hw_frames_ctx);
1928 if (avctx->priv_data && avctx->codec && avctx->codec->priv_class)
1929 av_opt_free(avctx->priv_data);
1931 av_freep(&avctx->priv_data);
1932 if (av_codec_is_encoder(avctx->codec)) {
1933 av_freep(&avctx->extradata);
1934 #if FF_API_CODED_FRAME
1935 FF_DISABLE_DEPRECATION_WARNINGS
1936 av_frame_free(&avctx->coded_frame);
1937 FF_ENABLE_DEPRECATION_WARNINGS
1940 avctx->codec = NULL;
1941 avctx->active_thread_type = 0;
1946 static AVCodec *find_encdec(enum AVCodecID id, int encoder)
1948 AVCodec *p, *experimental = NULL;
1951 if ((encoder ? av_codec_is_encoder(p) : av_codec_is_decoder(p)) &&
1953 if (p->capabilities & AV_CODEC_CAP_EXPERIMENTAL && !experimental) {
1960 return experimental;
1963 AVCodec *avcodec_find_encoder(enum AVCodecID id)
1965 return find_encdec(id, 1);
1968 AVCodec *avcodec_find_encoder_by_name(const char *name)
1975 if (av_codec_is_encoder(p) && strcmp(name, p->name) == 0)
1982 AVCodec *avcodec_find_decoder(enum AVCodecID id)
1984 return find_encdec(id, 0);
1987 AVCodec *avcodec_find_decoder_by_name(const char *name)
1994 if (av_codec_is_decoder(p) && strcmp(name, p->name) == 0)
2001 static int get_bit_rate(AVCodecContext *ctx)
2004 int bits_per_sample;
2006 switch (ctx->codec_type) {
2007 case AVMEDIA_TYPE_VIDEO:
2008 case AVMEDIA_TYPE_DATA:
2009 case AVMEDIA_TYPE_SUBTITLE:
2010 case AVMEDIA_TYPE_ATTACHMENT:
2011 bit_rate = ctx->bit_rate;
2013 case AVMEDIA_TYPE_AUDIO:
2014 bits_per_sample = av_get_bits_per_sample(ctx->codec_id);
2015 bit_rate = bits_per_sample ? ctx->sample_rate * ctx->channels * bits_per_sample : ctx->bit_rate;
2024 size_t av_get_codec_tag_string(char *buf, size_t buf_size, unsigned int codec_tag)
2026 int i, len, ret = 0;
2028 #define TAG_PRINT(x) \
2029 (((x) >= '0' && (x) <= '9') || \
2030 ((x) >= 'a' && (x) <= 'z') || ((x) >= 'A' && (x) <= 'Z') || \
2031 ((x) == '.' || (x) == ' '))
2033 for (i = 0; i < 4; i++) {
2034 len = snprintf(buf, buf_size,
2035 TAG_PRINT(codec_tag & 0xFF) ? "%c" : "[%d]", codec_tag & 0xFF);
2037 buf_size = buf_size > len ? buf_size - len : 0;
2044 void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)
2046 const char *codec_name;
2047 const char *profile = NULL;
2051 AVRational display_aspect_ratio;
2052 const AVCodecDescriptor *desc = avcodec_descriptor_get(enc->codec_id);
2055 codec_name = desc->name;
2056 profile = avcodec_profile_name(enc->codec_id, enc->profile);
2057 } else if (enc->codec_id == AV_CODEC_ID_MPEG2TS) {
2058 /* fake mpeg2 transport stream codec (currently not
2060 codec_name = "mpeg2ts";
2062 /* output avi tags */
2064 av_get_codec_tag_string(tag_buf, sizeof(tag_buf), enc->codec_tag);
2065 snprintf(buf1, sizeof(buf1), "%s / 0x%04X", tag_buf, enc->codec_tag);
2069 switch (enc->codec_type) {
2070 case AVMEDIA_TYPE_VIDEO:
2071 snprintf(buf, buf_size,
2073 codec_name, enc->mb_decision ? " (hq)" : "");
2075 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2077 if (enc->codec_tag) {
2079 av_get_codec_tag_string(tag_buf, sizeof(tag_buf), enc->codec_tag);
2080 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2081 " [%s / 0x%04X]", tag_buf, enc->codec_tag);
2084 av_strlcat(buf, "\n ", buf_size);
2085 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2086 "%s", enc->pix_fmt == AV_PIX_FMT_NONE ? "none" :
2087 av_get_pix_fmt_name(enc->pix_fmt));
2089 if (enc->color_range != AVCOL_RANGE_UNSPECIFIED)
2090 snprintf(buf + strlen(buf), buf_size - strlen(buf), ", %s",
2091 av_color_range_name(enc->color_range));
2092 if (enc->colorspace != AVCOL_SPC_UNSPECIFIED ||
2093 enc->color_primaries != AVCOL_PRI_UNSPECIFIED ||
2094 enc->color_trc != AVCOL_TRC_UNSPECIFIED) {
2096 snprintf(buf + strlen(buf), buf_size - strlen(buf), ", %s/%s/%s",
2097 av_color_space_name(enc->colorspace),
2098 av_color_primaries_name(enc->color_primaries),
2099 av_color_transfer_name(enc->color_trc));
2101 if (av_log_get_level() >= AV_LOG_DEBUG &&
2102 enc->chroma_sample_location != AVCHROMA_LOC_UNSPECIFIED)
2103 snprintf(buf + strlen(buf), buf_size - strlen(buf), ", %s",
2104 av_chroma_location_name(enc->chroma_sample_location));
2107 av_strlcat(buf, new_line ? "\n " : ", ", buf_size);
2109 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2111 enc->width, enc->height);
2113 if (av_log_get_level() >= AV_LOG_VERBOSE &&
2114 (enc->width != enc->coded_width ||
2115 enc->height != enc->coded_height))
2116 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2117 " (%dx%d)", enc->coded_width, enc->coded_height);
2119 if (enc->sample_aspect_ratio.num) {
2120 av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
2121 enc->width * enc->sample_aspect_ratio.num,
2122 enc->height * enc->sample_aspect_ratio.den,
2124 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2125 " [PAR %d:%d DAR %d:%d]",
2126 enc->sample_aspect_ratio.num, enc->sample_aspect_ratio.den,
2127 display_aspect_ratio.num, display_aspect_ratio.den);
2129 if (av_log_get_level() >= AV_LOG_DEBUG) {
2130 int g = av_gcd(enc->time_base.num, enc->time_base.den);
2131 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2133 enc->time_base.num / g, enc->time_base.den / g);
2137 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2138 ", q=%d-%d", enc->qmin, enc->qmax);
2141 case AVMEDIA_TYPE_AUDIO:
2142 snprintf(buf, buf_size,
2146 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2148 if (enc->codec_tag) {
2150 av_get_codec_tag_string(tag_buf, sizeof(tag_buf), enc->codec_tag);
2151 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2152 " [%s / 0x%04X]", tag_buf, enc->codec_tag);
2155 av_strlcat(buf, "\n ", buf_size);
2156 if (enc->sample_rate) {
2157 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2158 "%d Hz, ", enc->sample_rate);
2160 av_get_channel_layout_string(buf + strlen(buf), buf_size - strlen(buf), enc->channels, enc->channel_layout);
2161 if (enc->sample_fmt != AV_SAMPLE_FMT_NONE) {
2162 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2163 ", %s", av_get_sample_fmt_name(enc->sample_fmt));
2166 case AVMEDIA_TYPE_DATA:
2167 snprintf(buf, buf_size, "Data: %s", codec_name);
2169 case AVMEDIA_TYPE_SUBTITLE:
2170 snprintf(buf, buf_size, "Subtitle: %s", codec_name);
2172 case AVMEDIA_TYPE_ATTACHMENT:
2173 snprintf(buf, buf_size, "Attachment: %s", codec_name);
2176 snprintf(buf, buf_size, "Invalid Codec type %d", enc->codec_type);
2180 if (enc->flags & AV_CODEC_FLAG_PASS1)
2181 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2183 if (enc->flags & AV_CODEC_FLAG_PASS2)
2184 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2187 bitrate = get_bit_rate(enc);
2189 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2190 ", %d kb/s", bitrate / 1000);
2194 const char *av_get_profile_name(const AVCodec *codec, int profile)
2197 if (profile == FF_PROFILE_UNKNOWN || !codec->profiles)
2200 for (p = codec->profiles; p->profile != FF_PROFILE_UNKNOWN; p++)
2201 if (p->profile == profile)
2207 const char *avcodec_profile_name(enum AVCodecID codec_id, int profile)
2209 const AVCodecDescriptor *desc = avcodec_descriptor_get(codec_id);
2212 if (profile == FF_PROFILE_UNKNOWN || !desc || !desc->profiles)
2215 for (p = desc->profiles; p->profile != FF_PROFILE_UNKNOWN; p++)
2216 if (p->profile == profile)
2222 unsigned avcodec_version(void)
2224 return LIBAVCODEC_VERSION_INT;
2227 const char *avcodec_configuration(void)
2229 return LIBAV_CONFIGURATION;
2232 const char *avcodec_license(void)
2234 #define LICENSE_PREFIX "libavcodec license: "
2235 return LICENSE_PREFIX LIBAV_LICENSE + sizeof(LICENSE_PREFIX) - 1;
2238 void avcodec_flush_buffers(AVCodecContext *avctx)
2240 avctx->internal->draining = 0;
2241 avctx->internal->draining_done = 0;
2242 av_frame_unref(avctx->internal->buffer_frame);
2243 av_packet_unref(avctx->internal->buffer_pkt);
2244 avctx->internal->buffer_pkt_valid = 0;
2246 if (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME)
2247 ff_thread_flush(avctx);
2248 else if (avctx->codec->flush)
2249 avctx->codec->flush(avctx);
2251 if (!avctx->refcounted_frames)
2252 av_frame_unref(avctx->internal->to_free);
2255 int av_get_exact_bits_per_sample(enum AVCodecID codec_id)
2258 case AV_CODEC_ID_ADPCM_CT:
2259 case AV_CODEC_ID_ADPCM_IMA_APC:
2260 case AV_CODEC_ID_ADPCM_IMA_EA_SEAD:
2261 case AV_CODEC_ID_ADPCM_IMA_WS:
2262 case AV_CODEC_ID_ADPCM_G722:
2263 case AV_CODEC_ID_ADPCM_YAMAHA:
2265 case AV_CODEC_ID_PCM_ALAW:
2266 case AV_CODEC_ID_PCM_MULAW:
2267 case AV_CODEC_ID_PCM_S8:
2268 case AV_CODEC_ID_PCM_U8:
2269 case AV_CODEC_ID_PCM_ZORK:
2271 case AV_CODEC_ID_PCM_S16BE:
2272 case AV_CODEC_ID_PCM_S16BE_PLANAR:
2273 case AV_CODEC_ID_PCM_S16LE:
2274 case AV_CODEC_ID_PCM_S16LE_PLANAR:
2275 case AV_CODEC_ID_PCM_U16BE:
2276 case AV_CODEC_ID_PCM_U16LE:
2278 case AV_CODEC_ID_PCM_S24DAUD:
2279 case AV_CODEC_ID_PCM_S24BE:
2280 case AV_CODEC_ID_PCM_S24LE:
2281 case AV_CODEC_ID_PCM_S24LE_PLANAR:
2282 case AV_CODEC_ID_PCM_U24BE:
2283 case AV_CODEC_ID_PCM_U24LE:
2285 case AV_CODEC_ID_PCM_S32BE:
2286 case AV_CODEC_ID_PCM_S32LE:
2287 case AV_CODEC_ID_PCM_S32LE_PLANAR:
2288 case AV_CODEC_ID_PCM_U32BE:
2289 case AV_CODEC_ID_PCM_U32LE:
2290 case AV_CODEC_ID_PCM_F32BE:
2291 case AV_CODEC_ID_PCM_F32LE:
2293 case AV_CODEC_ID_PCM_F64BE:
2294 case AV_CODEC_ID_PCM_F64LE:
2301 int av_get_bits_per_sample(enum AVCodecID codec_id)
2304 case AV_CODEC_ID_ADPCM_SBPRO_2:
2306 case AV_CODEC_ID_ADPCM_SBPRO_3:
2308 case AV_CODEC_ID_ADPCM_SBPRO_4:
2309 case AV_CODEC_ID_ADPCM_IMA_WAV:
2310 case AV_CODEC_ID_ADPCM_IMA_QT:
2311 case AV_CODEC_ID_ADPCM_SWF:
2312 case AV_CODEC_ID_ADPCM_MS:
2315 return av_get_exact_bits_per_sample(codec_id);
2319 static int get_audio_frame_duration(enum AVCodecID id, int sr, int ch, int ba,
2320 uint32_t tag, int bits_per_coded_sample, int frame_bytes)
2322 int bps = av_get_exact_bits_per_sample(id);
2324 /* codecs with an exact constant bits per sample */
2325 if (bps > 0 && ch > 0 && frame_bytes > 0)
2326 return (frame_bytes * 8) / (bps * ch);
2327 bps = bits_per_coded_sample;
2329 /* codecs with a fixed packet duration */
2331 case AV_CODEC_ID_ADPCM_ADX: return 32;
2332 case AV_CODEC_ID_ADPCM_IMA_QT: return 64;
2333 case AV_CODEC_ID_ADPCM_EA_XAS: return 128;
2334 case AV_CODEC_ID_AMR_NB:
2335 case AV_CODEC_ID_GSM:
2336 case AV_CODEC_ID_QCELP:
2337 case AV_CODEC_ID_RA_144:
2338 case AV_CODEC_ID_RA_288: return 160;
2339 case AV_CODEC_ID_IMC: return 256;
2340 case AV_CODEC_ID_AMR_WB:
2341 case AV_CODEC_ID_GSM_MS: return 320;
2342 case AV_CODEC_ID_MP1: return 384;
2343 case AV_CODEC_ID_ATRAC1: return 512;
2344 case AV_CODEC_ID_ATRAC3: return 1024;
2345 case AV_CODEC_ID_MP2:
2346 case AV_CODEC_ID_MUSEPACK7: return 1152;
2347 case AV_CODEC_ID_AC3: return 1536;
2351 /* calc from sample rate */
2352 if (id == AV_CODEC_ID_TTA)
2353 return 256 * sr / 245;
2356 /* calc from sample rate and channels */
2357 if (id == AV_CODEC_ID_BINKAUDIO_DCT)
2358 return (480 << (sr / 22050)) / ch;
2363 /* calc from block_align */
2364 if (id == AV_CODEC_ID_SIPR) {
2366 case 20: return 160;
2367 case 19: return 144;
2368 case 29: return 288;
2369 case 37: return 480;
2371 } else if (id == AV_CODEC_ID_ILBC) {
2373 case 38: return 160;
2374 case 50: return 240;
2379 if (frame_bytes > 0) {
2380 /* calc from frame_bytes only */
2381 if (id == AV_CODEC_ID_TRUESPEECH)
2382 return 240 * (frame_bytes / 32);
2383 if (id == AV_CODEC_ID_NELLYMOSER)
2384 return 256 * (frame_bytes / 64);
2387 /* calc from frame_bytes and bits_per_coded_sample */
2388 if (id == AV_CODEC_ID_ADPCM_G726)
2389 return frame_bytes * 8 / bps;
2393 /* calc from frame_bytes and channels */
2395 case AV_CODEC_ID_ADPCM_4XM:
2396 case AV_CODEC_ID_ADPCM_IMA_ISS:
2397 return (frame_bytes - 4 * ch) * 2 / ch;
2398 case AV_CODEC_ID_ADPCM_IMA_SMJPEG:
2399 return (frame_bytes - 4) * 2 / ch;
2400 case AV_CODEC_ID_ADPCM_IMA_AMV:
2401 return (frame_bytes - 8) * 2 / ch;
2402 case AV_CODEC_ID_ADPCM_XA:
2403 return (frame_bytes / 128) * 224 / ch;
2404 case AV_CODEC_ID_INTERPLAY_DPCM:
2405 return (frame_bytes - 6 - ch) / ch;
2406 case AV_CODEC_ID_ROQ_DPCM:
2407 return (frame_bytes - 8) / ch;
2408 case AV_CODEC_ID_XAN_DPCM:
2409 return (frame_bytes - 2 * ch) / ch;
2410 case AV_CODEC_ID_MACE3:
2411 return 3 * frame_bytes / ch;
2412 case AV_CODEC_ID_MACE6:
2413 return 6 * frame_bytes / ch;
2414 case AV_CODEC_ID_PCM_LXF:
2415 return 2 * (frame_bytes / (5 * ch));
2419 /* calc from frame_bytes, channels, and codec_tag */
2420 if (id == AV_CODEC_ID_SOL_DPCM) {
2422 return frame_bytes / ch;
2424 return frame_bytes * 2 / ch;
2429 /* calc from frame_bytes, channels, and block_align */
2430 int blocks = frame_bytes / ba;
2432 case AV_CODEC_ID_ADPCM_IMA_WAV:
2433 return blocks * (1 + (ba - 4 * ch) / (4 * ch) * 8);
2434 case AV_CODEC_ID_ADPCM_IMA_DK3:
2435 return blocks * (((ba - 16) * 2 / 3 * 4) / ch);
2436 case AV_CODEC_ID_ADPCM_IMA_DK4:
2437 return blocks * (1 + (ba - 4 * ch) * 2 / ch);
2438 case AV_CODEC_ID_ADPCM_MS:
2439 return blocks * (2 + (ba - 7 * ch) * 2 / ch);
2444 /* calc from frame_bytes, channels, and bits_per_coded_sample */
2446 case AV_CODEC_ID_PCM_DVD:
2447 return 2 * (frame_bytes / ((bps * 2 / 8) * ch));
2448 case AV_CODEC_ID_PCM_BLURAY:
2449 return frame_bytes / ((FFALIGN(ch, 2) * bps) / 8);
2450 case AV_CODEC_ID_S302M:
2451 return 2 * (frame_bytes / ((bps + 4) / 4)) / ch;
2460 int av_get_audio_frame_duration(AVCodecContext *avctx, int frame_bytes)
2462 return get_audio_frame_duration(avctx->codec_id, avctx->sample_rate,
2463 avctx->channels, avctx->block_align,
2464 avctx->codec_tag, avctx->bits_per_coded_sample,
2468 int av_get_audio_frame_duration2(AVCodecParameters *par, int frame_bytes)
2470 return get_audio_frame_duration(par->codec_id, par->sample_rate,
2471 par->channels, par->block_align,
2472 par->codec_tag, par->bits_per_coded_sample,
2477 int ff_thread_init(AVCodecContext *s)
2484 unsigned int av_xiphlacing(unsigned char *s, unsigned int v)
2498 int ff_match_2uint16(const uint16_t(*tab)[2], int size, int a, int b)
2501 for (i = 0; i < size && !(tab[i][0] == a && tab[i][1] == b); i++) ;
2505 #if FF_API_MISSING_SAMPLE
2506 FF_DISABLE_DEPRECATION_WARNINGS
2507 void av_log_missing_feature(void *avc, const char *feature, int want_sample)
2509 av_log(avc, AV_LOG_WARNING, "%s is not implemented. Update your Libav "
2510 "version to the newest one from Git. If the problem still "
2511 "occurs, it means that your file has a feature which has not "
2512 "been implemented.\n", feature);
2514 av_log_ask_for_sample(avc, NULL);
2517 void av_log_ask_for_sample(void *avc, const char *msg, ...)
2519 va_list argument_list;
2521 va_start(argument_list, msg);
2524 av_vlog(avc, AV_LOG_WARNING, msg, argument_list);
2525 av_log(avc, AV_LOG_WARNING, "If you want to help, upload a sample "
2526 "of this file to ftp://upload.libav.org/incoming/ "
2527 "and contact the libav-devel mailing list.\n");
2529 va_end(argument_list);
2531 FF_ENABLE_DEPRECATION_WARNINGS
2532 #endif /* FF_API_MISSING_SAMPLE */
2534 static AVHWAccel *first_hwaccel = NULL;
2536 void av_register_hwaccel(AVHWAccel *hwaccel)
2538 AVHWAccel **p = &first_hwaccel;
2542 hwaccel->next = NULL;
2545 AVHWAccel *av_hwaccel_next(const AVHWAccel *hwaccel)
2547 return hwaccel ? hwaccel->next : first_hwaccel;
2550 int av_lockmgr_register(int (*cb)(void **mutex, enum AVLockOp op))
2553 // There is no good way to rollback a failure to destroy the
2554 // mutex, so we ignore failures.
2555 lockmgr_cb(&codec_mutex, AV_LOCK_DESTROY);
2556 lockmgr_cb(&avformat_mutex, AV_LOCK_DESTROY);
2559 avformat_mutex = NULL;
2563 void *new_codec_mutex = NULL;
2564 void *new_avformat_mutex = NULL;
2566 if (err = cb(&new_codec_mutex, AV_LOCK_CREATE)) {
2567 return err > 0 ? AVERROR_UNKNOWN : err;
2569 if (err = cb(&new_avformat_mutex, AV_LOCK_CREATE)) {
2570 // Ignore failures to destroy the newly created mutex.
2571 cb(&new_codec_mutex, AV_LOCK_DESTROY);
2572 return err > 0 ? AVERROR_UNKNOWN : err;
2575 codec_mutex = new_codec_mutex;
2576 avformat_mutex = new_avformat_mutex;
2582 int avpriv_lock_avformat(void)
2585 if ((*lockmgr_cb)(&avformat_mutex, AV_LOCK_OBTAIN))
2591 int avpriv_unlock_avformat(void)
2594 if ((*lockmgr_cb)(&avformat_mutex, AV_LOCK_RELEASE))
2600 unsigned int avpriv_toupper4(unsigned int x)
2602 return av_toupper(x & 0xFF) +
2603 (av_toupper((x >> 8) & 0xFF) << 8) +
2604 (av_toupper((x >> 16) & 0xFF) << 16) +
2605 (av_toupper((x >> 24) & 0xFF) << 24);
2608 int ff_thread_ref_frame(ThreadFrame *dst, ThreadFrame *src)
2612 dst->owner = src->owner;
2614 ret = av_frame_ref(dst->f, src->f);
2618 if (src->progress &&
2619 !(dst->progress = av_buffer_ref(src->progress))) {
2620 ff_thread_release_buffer(dst->owner, dst);
2621 return AVERROR(ENOMEM);
2629 int ff_thread_get_buffer(AVCodecContext *avctx, ThreadFrame *f, int flags)
2632 return ff_get_buffer(avctx, f->f, flags);
2635 void ff_thread_release_buffer(AVCodecContext *avctx, ThreadFrame *f)
2638 av_frame_unref(f->f);
2641 void ff_thread_finish_setup(AVCodecContext *avctx)
2645 void ff_thread_report_progress(ThreadFrame *f, int progress, int field)
2649 void ff_thread_await_progress(ThreadFrame *f, int progress, int field)
2655 int avcodec_is_open(AVCodecContext *s)
2657 return !!s->internal;
2660 const uint8_t *avpriv_find_start_code(const uint8_t *restrict p,
2662 uint32_t * restrict state)
2670 for (i = 0; i < 3; i++) {
2671 uint32_t tmp = *state << 8;
2672 *state = tmp + *(p++);
2673 if (tmp == 0x100 || p == end)
2678 if (p[-1] > 1 ) p += 3;
2679 else if (p[-2] ) p += 2;
2680 else if (p[-3]|(p[-1]-1)) p++;
2687 p = FFMIN(p, end) - 4;
2688 *state = AV_RB32(p);
2693 AVCPBProperties *av_cpb_properties_alloc(size_t *size)
2695 AVCPBProperties *props = av_mallocz(sizeof(AVCPBProperties));
2700 *size = sizeof(*props);
2702 props->vbv_delay = UINT64_MAX;
2707 AVCPBProperties *ff_add_cpb_side_data(AVCodecContext *avctx)
2709 AVPacketSideData *tmp;
2710 AVCPBProperties *props;
2713 props = av_cpb_properties_alloc(&size);
2717 tmp = av_realloc_array(avctx->coded_side_data, avctx->nb_coded_side_data + 1, sizeof(*tmp));
2723 avctx->coded_side_data = tmp;
2724 avctx->nb_coded_side_data++;
2726 avctx->coded_side_data[avctx->nb_coded_side_data - 1].type = AV_PKT_DATA_CPB_PROPERTIES;
2727 avctx->coded_side_data[avctx->nb_coded_side_data - 1].data = (uint8_t*)props;
2728 avctx->coded_side_data[avctx->nb_coded_side_data - 1].size = size;
2733 static void codec_parameters_reset(AVCodecParameters *par)
2735 av_freep(&par->extradata);
2737 memset(par, 0, sizeof(*par));
2739 par->codec_type = AVMEDIA_TYPE_UNKNOWN;
2740 par->codec_id = AV_CODEC_ID_NONE;
2742 par->field_order = AV_FIELD_UNKNOWN;
2743 par->color_range = AVCOL_RANGE_UNSPECIFIED;
2744 par->color_primaries = AVCOL_PRI_UNSPECIFIED;
2745 par->color_trc = AVCOL_TRC_UNSPECIFIED;
2746 par->color_space = AVCOL_SPC_UNSPECIFIED;
2747 par->chroma_location = AVCHROMA_LOC_UNSPECIFIED;
2748 par->sample_aspect_ratio = (AVRational){ 0, 1 };
2751 AVCodecParameters *avcodec_parameters_alloc(void)
2753 AVCodecParameters *par = av_mallocz(sizeof(*par));
2757 codec_parameters_reset(par);
2761 void avcodec_parameters_free(AVCodecParameters **ppar)
2763 AVCodecParameters *par = *ppar;
2767 codec_parameters_reset(par);
2772 int avcodec_parameters_copy(AVCodecParameters *dst, const AVCodecParameters *src)
2774 codec_parameters_reset(dst);
2775 memcpy(dst, src, sizeof(*dst));
2777 dst->extradata = NULL;
2778 dst->extradata_size = 0;
2779 if (src->extradata) {
2780 dst->extradata = av_mallocz(src->extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);
2781 if (!dst->extradata)
2782 return AVERROR(ENOMEM);
2783 memcpy(dst->extradata, src->extradata, src->extradata_size);
2784 dst->extradata_size = src->extradata_size;
2790 int avcodec_parameters_from_context(AVCodecParameters *par,
2791 const AVCodecContext *codec)
2793 codec_parameters_reset(par);
2795 par->codec_type = codec->codec_type;
2796 par->codec_id = codec->codec_id;
2797 par->codec_tag = codec->codec_tag;
2799 par->bit_rate = codec->bit_rate;
2800 par->bits_per_coded_sample = codec->bits_per_coded_sample;
2801 par->profile = codec->profile;
2802 par->level = codec->level;
2804 switch (par->codec_type) {
2805 case AVMEDIA_TYPE_VIDEO:
2806 par->format = codec->pix_fmt;
2807 par->width = codec->width;
2808 par->height = codec->height;
2809 par->field_order = codec->field_order;
2810 par->color_range = codec->color_range;
2811 par->color_primaries = codec->color_primaries;
2812 par->color_trc = codec->color_trc;
2813 par->color_space = codec->colorspace;
2814 par->chroma_location = codec->chroma_sample_location;
2815 par->sample_aspect_ratio = codec->sample_aspect_ratio;
2817 case AVMEDIA_TYPE_AUDIO:
2818 par->format = codec->sample_fmt;
2819 par->channel_layout = codec->channel_layout;
2820 par->channels = codec->channels;
2821 par->sample_rate = codec->sample_rate;
2822 par->block_align = codec->block_align;
2823 par->initial_padding = codec->initial_padding;
2827 if (codec->extradata) {
2828 par->extradata = av_mallocz(codec->extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);
2829 if (!par->extradata)
2830 return AVERROR(ENOMEM);
2831 memcpy(par->extradata, codec->extradata, codec->extradata_size);
2832 par->extradata_size = codec->extradata_size;
2838 int avcodec_parameters_to_context(AVCodecContext *codec,
2839 const AVCodecParameters *par)
2841 codec->codec_type = par->codec_type;
2842 codec->codec_id = par->codec_id;
2843 codec->codec_tag = par->codec_tag;
2845 codec->bit_rate = par->bit_rate;
2846 codec->bits_per_coded_sample = par->bits_per_coded_sample;
2847 codec->profile = par->profile;
2848 codec->level = par->level;
2850 switch (par->codec_type) {
2851 case AVMEDIA_TYPE_VIDEO:
2852 codec->pix_fmt = par->format;
2853 codec->width = par->width;
2854 codec->height = par->height;
2855 codec->field_order = par->field_order;
2856 codec->color_range = par->color_range;
2857 codec->color_primaries = par->color_primaries;
2858 codec->color_trc = par->color_trc;
2859 codec->colorspace = par->color_space;
2860 codec->chroma_sample_location = par->chroma_location;
2861 codec->sample_aspect_ratio = par->sample_aspect_ratio;
2863 case AVMEDIA_TYPE_AUDIO:
2864 codec->sample_fmt = par->format;
2865 codec->channel_layout = par->channel_layout;
2866 codec->channels = par->channels;
2867 codec->sample_rate = par->sample_rate;
2868 codec->block_align = par->block_align;
2869 codec->initial_padding = par->initial_padding;
2873 if (par->extradata) {
2874 av_freep(&codec->extradata);
2875 codec->extradata = av_mallocz(par->extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);
2876 if (!codec->extradata)
2877 return AVERROR(ENOMEM);
2878 memcpy(codec->extradata, par->extradata, par->extradata_size);
2879 codec->extradata_size = par->extradata_size;