3 * Copyright (c) 2001 Fabrice Bellard
4 * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
6 * This file is part of FFmpeg.
8 * FFmpeg 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 * FFmpeg 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 FFmpeg; 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/bprint.h"
33 #include "libavutil/channel_layout.h"
34 #include "libavutil/crc.h"
35 #include "libavutil/frame.h"
36 #include "libavutil/hwcontext.h"
37 #include "libavutil/internal.h"
38 #include "libavutil/mathematics.h"
39 #include "libavutil/mem_internal.h"
40 #include "libavutil/pixdesc.h"
41 #include "libavutil/imgutils.h"
42 #include "libavutil/samplefmt.h"
43 #include "libavutil/dict.h"
44 #include "libavutil/thread.h"
48 #include "libavutil/opt.h"
50 #include "mpegvideo.h"
52 #include "frame_thread_encoder.h"
55 #include "bytestream.h"
59 #include <stdatomic.h>
66 #include "libavutil/ffversion.h"
67 const char av_codec_ffversion[] = "FFmpeg version " FFMPEG_VERSION;
69 static AVMutex codec_mutex = AV_MUTEX_INITIALIZER;
71 void av_fast_padded_malloc(void *ptr, unsigned int *size, size_t min_size)
74 if (min_size > SIZE_MAX - AV_INPUT_BUFFER_PADDING_SIZE) {
79 if (!ff_fast_malloc(p, size, min_size + AV_INPUT_BUFFER_PADDING_SIZE, 1))
80 memset(*p + min_size, 0, AV_INPUT_BUFFER_PADDING_SIZE);
83 void av_fast_padded_mallocz(void *ptr, unsigned int *size, size_t min_size)
86 if (min_size > SIZE_MAX - AV_INPUT_BUFFER_PADDING_SIZE) {
91 if (!ff_fast_malloc(p, size, min_size + AV_INPUT_BUFFER_PADDING_SIZE, 1))
92 memset(*p, 0, min_size + AV_INPUT_BUFFER_PADDING_SIZE);
95 /* encoder management */
96 static AVCodec *first_avcodec = NULL;
97 static AVCodec **last_avcodec = &first_avcodec;
99 AVCodec *av_codec_next(const AVCodec *c)
104 return first_avcodec;
107 static av_cold void avcodec_init(void)
109 static int initialized = 0;
111 if (initialized != 0)
116 ff_me_cmp_init_static();
119 int av_codec_is_encoder(const AVCodec *codec)
121 return codec && (codec->encode_sub || codec->encode2 ||codec->send_frame);
124 int av_codec_is_decoder(const AVCodec *codec)
126 return codec && (codec->decode || codec->receive_frame);
129 static AVMutex codec_register_mutex = AV_MUTEX_INITIALIZER;
131 av_cold void avcodec_register(AVCodec *codec)
136 ff_mutex_lock(&codec_register_mutex);
143 last_avcodec = &codec->next;
145 ff_mutex_unlock(&codec_register_mutex);
147 if (codec->init_static_data)
148 codec->init_static_data(codec);
151 int ff_set_dimensions(AVCodecContext *s, int width, int height)
153 int ret = av_image_check_size2(width, height, s->max_pixels, AV_PIX_FMT_NONE, 0, s);
158 s->coded_width = width;
159 s->coded_height = height;
160 s->width = AV_CEIL_RSHIFT(width, s->lowres);
161 s->height = AV_CEIL_RSHIFT(height, s->lowres);
166 int ff_set_sar(AVCodecContext *avctx, AVRational sar)
168 int ret = av_image_check_sar(avctx->width, avctx->height, sar);
171 av_log(avctx, AV_LOG_WARNING, "ignoring invalid SAR: %d/%d\n",
173 avctx->sample_aspect_ratio = (AVRational){ 0, 1 };
176 avctx->sample_aspect_ratio = sar;
181 int ff_side_data_update_matrix_encoding(AVFrame *frame,
182 enum AVMatrixEncoding matrix_encoding)
184 AVFrameSideData *side_data;
185 enum AVMatrixEncoding *data;
187 side_data = av_frame_get_side_data(frame, AV_FRAME_DATA_MATRIXENCODING);
189 side_data = av_frame_new_side_data(frame, AV_FRAME_DATA_MATRIXENCODING,
190 sizeof(enum AVMatrixEncoding));
193 return AVERROR(ENOMEM);
195 data = (enum AVMatrixEncoding*)side_data->data;
196 *data = matrix_encoding;
201 void avcodec_align_dimensions2(AVCodecContext *s, int *width, int *height,
202 int linesize_align[AV_NUM_DATA_POINTERS])
207 AVPixFmtDescriptor const *desc = av_pix_fmt_desc_get(s->pix_fmt);
210 w_align = 1 << desc->log2_chroma_w;
211 h_align = 1 << desc->log2_chroma_h;
214 switch (s->pix_fmt) {
215 case AV_PIX_FMT_YUV420P:
216 case AV_PIX_FMT_YUYV422:
217 case AV_PIX_FMT_YVYU422:
218 case AV_PIX_FMT_UYVY422:
219 case AV_PIX_FMT_YUV422P:
220 case AV_PIX_FMT_YUV440P:
221 case AV_PIX_FMT_YUV444P:
222 case AV_PIX_FMT_GBRP:
223 case AV_PIX_FMT_GBRAP:
224 case AV_PIX_FMT_GRAY8:
225 case AV_PIX_FMT_GRAY16BE:
226 case AV_PIX_FMT_GRAY16LE:
227 case AV_PIX_FMT_YUVJ420P:
228 case AV_PIX_FMT_YUVJ422P:
229 case AV_PIX_FMT_YUVJ440P:
230 case AV_PIX_FMT_YUVJ444P:
231 case AV_PIX_FMT_YUVA420P:
232 case AV_PIX_FMT_YUVA422P:
233 case AV_PIX_FMT_YUVA444P:
234 case AV_PIX_FMT_YUV420P9LE:
235 case AV_PIX_FMT_YUV420P9BE:
236 case AV_PIX_FMT_YUV420P10LE:
237 case AV_PIX_FMT_YUV420P10BE:
238 case AV_PIX_FMT_YUV420P12LE:
239 case AV_PIX_FMT_YUV420P12BE:
240 case AV_PIX_FMT_YUV420P14LE:
241 case AV_PIX_FMT_YUV420P14BE:
242 case AV_PIX_FMT_YUV420P16LE:
243 case AV_PIX_FMT_YUV420P16BE:
244 case AV_PIX_FMT_YUVA420P9LE:
245 case AV_PIX_FMT_YUVA420P9BE:
246 case AV_PIX_FMT_YUVA420P10LE:
247 case AV_PIX_FMT_YUVA420P10BE:
248 case AV_PIX_FMT_YUVA420P16LE:
249 case AV_PIX_FMT_YUVA420P16BE:
250 case AV_PIX_FMT_YUV422P9LE:
251 case AV_PIX_FMT_YUV422P9BE:
252 case AV_PIX_FMT_YUV422P10LE:
253 case AV_PIX_FMT_YUV422P10BE:
254 case AV_PIX_FMT_YUV422P12LE:
255 case AV_PIX_FMT_YUV422P12BE:
256 case AV_PIX_FMT_YUV422P14LE:
257 case AV_PIX_FMT_YUV422P14BE:
258 case AV_PIX_FMT_YUV422P16LE:
259 case AV_PIX_FMT_YUV422P16BE:
260 case AV_PIX_FMT_YUVA422P9LE:
261 case AV_PIX_FMT_YUVA422P9BE:
262 case AV_PIX_FMT_YUVA422P10LE:
263 case AV_PIX_FMT_YUVA422P10BE:
264 case AV_PIX_FMT_YUVA422P16LE:
265 case AV_PIX_FMT_YUVA422P16BE:
266 case AV_PIX_FMT_YUV440P10LE:
267 case AV_PIX_FMT_YUV440P10BE:
268 case AV_PIX_FMT_YUV440P12LE:
269 case AV_PIX_FMT_YUV440P12BE:
270 case AV_PIX_FMT_YUV444P9LE:
271 case AV_PIX_FMT_YUV444P9BE:
272 case AV_PIX_FMT_YUV444P10LE:
273 case AV_PIX_FMT_YUV444P10BE:
274 case AV_PIX_FMT_YUV444P12LE:
275 case AV_PIX_FMT_YUV444P12BE:
276 case AV_PIX_FMT_YUV444P14LE:
277 case AV_PIX_FMT_YUV444P14BE:
278 case AV_PIX_FMT_YUV444P16LE:
279 case AV_PIX_FMT_YUV444P16BE:
280 case AV_PIX_FMT_YUVA444P9LE:
281 case AV_PIX_FMT_YUVA444P9BE:
282 case AV_PIX_FMT_YUVA444P10LE:
283 case AV_PIX_FMT_YUVA444P10BE:
284 case AV_PIX_FMT_YUVA444P16LE:
285 case AV_PIX_FMT_YUVA444P16BE:
286 case AV_PIX_FMT_GBRP9LE:
287 case AV_PIX_FMT_GBRP9BE:
288 case AV_PIX_FMT_GBRP10LE:
289 case AV_PIX_FMT_GBRP10BE:
290 case AV_PIX_FMT_GBRP12LE:
291 case AV_PIX_FMT_GBRP12BE:
292 case AV_PIX_FMT_GBRP14LE:
293 case AV_PIX_FMT_GBRP14BE:
294 case AV_PIX_FMT_GBRP16LE:
295 case AV_PIX_FMT_GBRP16BE:
296 case AV_PIX_FMT_GBRAP12LE:
297 case AV_PIX_FMT_GBRAP12BE:
298 case AV_PIX_FMT_GBRAP16LE:
299 case AV_PIX_FMT_GBRAP16BE:
300 w_align = 16; //FIXME assume 16 pixel per macroblock
301 h_align = 16 * 2; // interlaced needs 2 macroblocks height
303 case AV_PIX_FMT_YUV411P:
304 case AV_PIX_FMT_YUVJ411P:
305 case AV_PIX_FMT_UYYVYY411:
309 case AV_PIX_FMT_YUV410P:
310 if (s->codec_id == AV_CODEC_ID_SVQ1) {
315 case AV_PIX_FMT_RGB555:
316 if (s->codec_id == AV_CODEC_ID_RPZA) {
320 if (s->codec_id == AV_CODEC_ID_INTERPLAY_VIDEO) {
325 case AV_PIX_FMT_PAL8:
326 case AV_PIX_FMT_BGR8:
327 case AV_PIX_FMT_RGB8:
328 if (s->codec_id == AV_CODEC_ID_SMC ||
329 s->codec_id == AV_CODEC_ID_CINEPAK) {
333 if (s->codec_id == AV_CODEC_ID_JV ||
334 s->codec_id == AV_CODEC_ID_INTERPLAY_VIDEO) {
339 case AV_PIX_FMT_BGR24:
340 if ((s->codec_id == AV_CODEC_ID_MSZH) ||
341 (s->codec_id == AV_CODEC_ID_ZLIB)) {
346 case AV_PIX_FMT_RGB24:
347 if (s->codec_id == AV_CODEC_ID_CINEPAK) {
356 if (s->codec_id == AV_CODEC_ID_IFF_ILBM) {
357 w_align = FFMAX(w_align, 8);
360 *width = FFALIGN(*width, w_align);
361 *height = FFALIGN(*height, h_align);
362 if (s->codec_id == AV_CODEC_ID_H264 || s->lowres) {
363 // some of the optimized chroma MC reads one line too much
364 // which is also done in mpeg decoders with lowres > 0
367 // H.264 uses edge emulation for out of frame motion vectors, for this
368 // it requires a temporary area large enough to hold a 21x21 block,
369 // increasing witdth ensure that the temporary area is large enough,
370 // the next rounded up width is 32
371 *width = FFMAX(*width, 32);
374 for (i = 0; i < 4; i++)
375 linesize_align[i] = STRIDE_ALIGN;
378 void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height)
380 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(s->pix_fmt);
381 int chroma_shift = desc->log2_chroma_w;
382 int linesize_align[AV_NUM_DATA_POINTERS];
385 avcodec_align_dimensions2(s, width, height, linesize_align);
386 align = FFMAX(linesize_align[0], linesize_align[3]);
387 linesize_align[1] <<= chroma_shift;
388 linesize_align[2] <<= chroma_shift;
389 align = FFMAX3(align, linesize_align[1], linesize_align[2]);
390 *width = FFALIGN(*width, align);
393 int avcodec_enum_to_chroma_pos(int *xpos, int *ypos, enum AVChromaLocation pos)
395 if (pos <= AVCHROMA_LOC_UNSPECIFIED || pos >= AVCHROMA_LOC_NB)
396 return AVERROR(EINVAL);
399 *xpos = (pos&1) * 128;
400 *ypos = ((pos>>1)^(pos<4)) * 128;
405 enum AVChromaLocation avcodec_chroma_pos_to_enum(int xpos, int ypos)
409 for (pos = AVCHROMA_LOC_UNSPECIFIED + 1; pos < AVCHROMA_LOC_NB; pos++) {
410 if (avcodec_enum_to_chroma_pos(&xout, &yout, pos) == 0 && xout == xpos && yout == ypos)
413 return AVCHROMA_LOC_UNSPECIFIED;
416 int avcodec_fill_audio_frame(AVFrame *frame, int nb_channels,
417 enum AVSampleFormat sample_fmt, const uint8_t *buf,
418 int buf_size, int align)
420 int ch, planar, needed_size, ret = 0;
422 needed_size = av_samples_get_buffer_size(NULL, nb_channels,
423 frame->nb_samples, sample_fmt,
425 if (buf_size < needed_size)
426 return AVERROR(EINVAL);
428 planar = av_sample_fmt_is_planar(sample_fmt);
429 if (planar && nb_channels > AV_NUM_DATA_POINTERS) {
430 if (!(frame->extended_data = av_mallocz_array(nb_channels,
431 sizeof(*frame->extended_data))))
432 return AVERROR(ENOMEM);
434 frame->extended_data = frame->data;
437 if ((ret = av_samples_fill_arrays(frame->extended_data, &frame->linesize[0],
438 (uint8_t *)(intptr_t)buf, nb_channels, frame->nb_samples,
439 sample_fmt, align)) < 0) {
440 if (frame->extended_data != frame->data)
441 av_freep(&frame->extended_data);
444 if (frame->extended_data != frame->data) {
445 for (ch = 0; ch < AV_NUM_DATA_POINTERS; ch++)
446 frame->data[ch] = frame->extended_data[ch];
452 void ff_color_frame(AVFrame *frame, const int c[4])
454 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(frame->format);
457 av_assert0(desc->flags & AV_PIX_FMT_FLAG_PLANAR);
459 for (p = 0; p<desc->nb_components; p++) {
460 uint8_t *dst = frame->data[p];
461 int is_chroma = p == 1 || p == 2;
462 int bytes = is_chroma ? AV_CEIL_RSHIFT(frame->width, desc->log2_chroma_w) : frame->width;
463 int height = is_chroma ? AV_CEIL_RSHIFT(frame->height, desc->log2_chroma_h) : frame->height;
464 for (y = 0; y < height; y++) {
465 if (desc->comp[0].depth >= 9) {
466 for (x = 0; x<bytes; x++)
467 ((uint16_t*)dst)[x] = c[p];
469 memset(dst, c[p], bytes);
470 dst += frame->linesize[p];
475 int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2), void *arg, int *ret, int count, int size)
479 for (i = 0; i < count; i++) {
480 int r = func(c, (char *)arg + i * size);
488 int avcodec_default_execute2(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2, int jobnr, int threadnr), void *arg, int *ret, int count)
492 for (i = 0; i < count; i++) {
493 int r = func(c, arg, i, 0);
501 enum AVPixelFormat avpriv_find_pix_fmt(const PixelFormatTag *tags,
504 while (tags->pix_fmt >= 0) {
505 if (tags->fourcc == fourcc)
506 return tags->pix_fmt;
509 return AV_PIX_FMT_NONE;
512 #if FF_API_CODEC_GET_SET
513 MAKE_ACCESSORS(AVCodecContext, codec, AVRational, pkt_timebase)
514 MAKE_ACCESSORS(AVCodecContext, codec, const AVCodecDescriptor *, codec_descriptor)
515 MAKE_ACCESSORS(AVCodecContext, codec, int, lowres)
516 MAKE_ACCESSORS(AVCodecContext, codec, int, seek_preroll)
517 MAKE_ACCESSORS(AVCodecContext, codec, uint16_t*, chroma_intra_matrix)
519 unsigned av_codec_get_codec_properties(const AVCodecContext *codec)
521 return codec->properties;
524 int av_codec_get_max_lowres(const AVCodec *codec)
526 return codec->max_lowres;
530 int avpriv_codec_get_cap_skip_frame_fill_param(const AVCodec *codec){
531 return !!(codec->caps_internal & FF_CODEC_CAP_SKIP_FRAME_FILL_PARAM);
534 static int64_t get_bit_rate(AVCodecContext *ctx)
539 switch (ctx->codec_type) {
540 case AVMEDIA_TYPE_VIDEO:
541 case AVMEDIA_TYPE_DATA:
542 case AVMEDIA_TYPE_SUBTITLE:
543 case AVMEDIA_TYPE_ATTACHMENT:
544 bit_rate = ctx->bit_rate;
546 case AVMEDIA_TYPE_AUDIO:
547 bits_per_sample = av_get_bits_per_sample(ctx->codec_id);
548 bit_rate = bits_per_sample ? ctx->sample_rate * (int64_t)ctx->channels * bits_per_sample : ctx->bit_rate;
558 static void ff_lock_avcodec(AVCodecContext *log_ctx, const AVCodec *codec)
560 if (!(codec->caps_internal & FF_CODEC_CAP_INIT_THREADSAFE) && codec->init)
561 ff_mutex_lock(&codec_mutex);
564 static void ff_unlock_avcodec(const AVCodec *codec)
566 if (!(codec->caps_internal & FF_CODEC_CAP_INIT_THREADSAFE) && codec->init)
567 ff_mutex_unlock(&codec_mutex);
570 int attribute_align_arg ff_codec_open2_recursive(AVCodecContext *avctx, const AVCodec *codec, AVDictionary **options)
574 ff_unlock_avcodec(codec);
576 ret = avcodec_open2(avctx, codec, options);
578 ff_lock_avcodec(avctx, codec);
582 int attribute_align_arg avcodec_open2(AVCodecContext *avctx, const AVCodec *codec, AVDictionary **options)
585 AVDictionary *tmp = NULL;
586 const AVPixFmtDescriptor *pixdesc;
588 if (avcodec_is_open(avctx))
591 if ((!codec && !avctx->codec)) {
592 av_log(avctx, AV_LOG_ERROR, "No codec provided to avcodec_open2()\n");
593 return AVERROR(EINVAL);
595 if ((codec && avctx->codec && codec != avctx->codec)) {
596 av_log(avctx, AV_LOG_ERROR, "This AVCodecContext was allocated for %s, "
597 "but %s passed to avcodec_open2()\n", avctx->codec->name, codec->name);
598 return AVERROR(EINVAL);
601 codec = avctx->codec;
603 if (avctx->extradata_size < 0 || avctx->extradata_size >= FF_MAX_EXTRADATA_SIZE)
604 return AVERROR(EINVAL);
607 av_dict_copy(&tmp, *options, 0);
609 ff_lock_avcodec(avctx, codec);
611 avctx->internal = av_mallocz(sizeof(*avctx->internal));
612 if (!avctx->internal) {
613 ret = AVERROR(ENOMEM);
617 avctx->internal->pool = av_mallocz(sizeof(*avctx->internal->pool));
618 if (!avctx->internal->pool) {
619 ret = AVERROR(ENOMEM);
623 avctx->internal->to_free = av_frame_alloc();
624 if (!avctx->internal->to_free) {
625 ret = AVERROR(ENOMEM);
629 avctx->internal->compat_decode_frame = av_frame_alloc();
630 if (!avctx->internal->compat_decode_frame) {
631 ret = AVERROR(ENOMEM);
635 avctx->internal->buffer_frame = av_frame_alloc();
636 if (!avctx->internal->buffer_frame) {
637 ret = AVERROR(ENOMEM);
641 avctx->internal->buffer_pkt = av_packet_alloc();
642 if (!avctx->internal->buffer_pkt) {
643 ret = AVERROR(ENOMEM);
647 avctx->internal->ds.in_pkt = av_packet_alloc();
648 if (!avctx->internal->ds.in_pkt) {
649 ret = AVERROR(ENOMEM);
653 avctx->internal->last_pkt_props = av_packet_alloc();
654 if (!avctx->internal->last_pkt_props) {
655 ret = AVERROR(ENOMEM);
659 avctx->internal->skip_samples_multiplier = 1;
661 if (codec->priv_data_size > 0) {
662 if (!avctx->priv_data) {
663 avctx->priv_data = av_mallocz(codec->priv_data_size);
664 if (!avctx->priv_data) {
665 ret = AVERROR(ENOMEM);
668 if (codec->priv_class) {
669 *(const AVClass **)avctx->priv_data = codec->priv_class;
670 av_opt_set_defaults(avctx->priv_data);
673 if (codec->priv_class && (ret = av_opt_set_dict(avctx->priv_data, &tmp)) < 0)
676 avctx->priv_data = NULL;
678 if ((ret = av_opt_set_dict(avctx, &tmp)) < 0)
681 if (avctx->codec_whitelist && av_match_list(codec->name, avctx->codec_whitelist, ',') <= 0) {
682 av_log(avctx, AV_LOG_ERROR, "Codec (%s) not on whitelist \'%s\'\n", codec->name, avctx->codec_whitelist);
683 ret = AVERROR(EINVAL);
687 // only call ff_set_dimensions() for non H.264/VP6F/DXV codecs so as not to overwrite previously setup dimensions
688 if (!(avctx->coded_width && avctx->coded_height && avctx->width && avctx->height &&
689 (avctx->codec_id == AV_CODEC_ID_H264 || avctx->codec_id == AV_CODEC_ID_VP6F || avctx->codec_id == AV_CODEC_ID_DXV))) {
690 if (avctx->coded_width && avctx->coded_height)
691 ret = ff_set_dimensions(avctx, avctx->coded_width, avctx->coded_height);
692 else if (avctx->width && avctx->height)
693 ret = ff_set_dimensions(avctx, avctx->width, avctx->height);
698 if ((avctx->coded_width || avctx->coded_height || avctx->width || avctx->height)
699 && ( av_image_check_size2(avctx->coded_width, avctx->coded_height, avctx->max_pixels, AV_PIX_FMT_NONE, 0, avctx) < 0
700 || av_image_check_size2(avctx->width, avctx->height, avctx->max_pixels, AV_PIX_FMT_NONE, 0, avctx) < 0)) {
701 av_log(avctx, AV_LOG_WARNING, "Ignoring invalid width/height values\n");
702 ff_set_dimensions(avctx, 0, 0);
705 if (avctx->width > 0 && avctx->height > 0) {
706 if (av_image_check_sar(avctx->width, avctx->height,
707 avctx->sample_aspect_ratio) < 0) {
708 av_log(avctx, AV_LOG_WARNING, "ignoring invalid SAR: %u/%u\n",
709 avctx->sample_aspect_ratio.num,
710 avctx->sample_aspect_ratio.den);
711 avctx->sample_aspect_ratio = (AVRational){ 0, 1 };
715 /* if the decoder init function was already called previously,
716 * free the already allocated subtitle_header before overwriting it */
717 if (av_codec_is_decoder(codec))
718 av_freep(&avctx->subtitle_header);
720 if (avctx->channels > FF_SANE_NB_CHANNELS) {
721 ret = AVERROR(EINVAL);
725 avctx->codec = codec;
726 if ((avctx->codec_type == AVMEDIA_TYPE_UNKNOWN || avctx->codec_type == codec->type) &&
727 avctx->codec_id == AV_CODEC_ID_NONE) {
728 avctx->codec_type = codec->type;
729 avctx->codec_id = codec->id;
731 if (avctx->codec_id != codec->id || (avctx->codec_type != codec->type
732 && avctx->codec_type != AVMEDIA_TYPE_ATTACHMENT)) {
733 av_log(avctx, AV_LOG_ERROR, "Codec type or id mismatches\n");
734 ret = AVERROR(EINVAL);
737 avctx->frame_number = 0;
738 avctx->codec_descriptor = avcodec_descriptor_get(avctx->codec_id);
740 if ((avctx->codec->capabilities & AV_CODEC_CAP_EXPERIMENTAL) &&
741 avctx->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
742 const char *codec_string = av_codec_is_encoder(codec) ? "encoder" : "decoder";
744 av_log(avctx, AV_LOG_ERROR,
745 "The %s '%s' is experimental but experimental codecs are not enabled, "
746 "add '-strict %d' if you want to use it.\n",
747 codec_string, codec->name, FF_COMPLIANCE_EXPERIMENTAL);
748 codec2 = av_codec_is_encoder(codec) ? avcodec_find_encoder(codec->id) : avcodec_find_decoder(codec->id);
749 if (!(codec2->capabilities & AV_CODEC_CAP_EXPERIMENTAL))
750 av_log(avctx, AV_LOG_ERROR, "Alternatively use the non experimental %s '%s'.\n",
751 codec_string, codec2->name);
752 ret = AVERROR_EXPERIMENTAL;
756 if (avctx->codec_type == AVMEDIA_TYPE_AUDIO &&
757 (!avctx->time_base.num || !avctx->time_base.den)) {
758 avctx->time_base.num = 1;
759 avctx->time_base.den = avctx->sample_rate;
763 av_log(avctx, AV_LOG_WARNING, "Warning: not compiled with thread support, using thread emulation\n");
765 if (CONFIG_FRAME_THREAD_ENCODER && av_codec_is_encoder(avctx->codec)) {
766 ff_unlock_avcodec(codec); //we will instantiate a few encoders thus kick the counter to prevent false detection of a problem
767 ret = ff_frame_thread_encoder_init(avctx, options ? *options : NULL);
768 ff_lock_avcodec(avctx, codec);
774 && !(avctx->internal->frame_thread_encoder && (avctx->active_thread_type&FF_THREAD_FRAME))) {
775 ret = ff_thread_init(avctx);
780 if (!HAVE_THREADS && !(codec->capabilities & AV_CODEC_CAP_AUTO_THREADS))
781 avctx->thread_count = 1;
783 if (avctx->codec->max_lowres < avctx->lowres || avctx->lowres < 0) {
784 av_log(avctx, AV_LOG_WARNING, "The maximum value for lowres supported by the decoder is %d\n",
785 avctx->codec->max_lowres);
786 avctx->lowres = avctx->codec->max_lowres;
789 if (av_codec_is_encoder(avctx->codec)) {
791 #if FF_API_CODED_FRAME
792 FF_DISABLE_DEPRECATION_WARNINGS
793 avctx->coded_frame = av_frame_alloc();
794 if (!avctx->coded_frame) {
795 ret = AVERROR(ENOMEM);
798 FF_ENABLE_DEPRECATION_WARNINGS
801 if (avctx->time_base.num <= 0 || avctx->time_base.den <= 0) {
802 av_log(avctx, AV_LOG_ERROR, "The encoder timebase is not set.\n");
803 ret = AVERROR(EINVAL);
807 if (avctx->codec->sample_fmts) {
808 for (i = 0; avctx->codec->sample_fmts[i] != AV_SAMPLE_FMT_NONE; i++) {
809 if (avctx->sample_fmt == avctx->codec->sample_fmts[i])
811 if (avctx->channels == 1 &&
812 av_get_planar_sample_fmt(avctx->sample_fmt) ==
813 av_get_planar_sample_fmt(avctx->codec->sample_fmts[i])) {
814 avctx->sample_fmt = avctx->codec->sample_fmts[i];
818 if (avctx->codec->sample_fmts[i] == AV_SAMPLE_FMT_NONE) {
820 snprintf(buf, sizeof(buf), "%d", avctx->sample_fmt);
821 av_log(avctx, AV_LOG_ERROR, "Specified sample format %s is invalid or not supported\n",
822 (char *)av_x_if_null(av_get_sample_fmt_name(avctx->sample_fmt), buf));
823 ret = AVERROR(EINVAL);
827 if (avctx->codec->pix_fmts) {
828 for (i = 0; avctx->codec->pix_fmts[i] != AV_PIX_FMT_NONE; i++)
829 if (avctx->pix_fmt == avctx->codec->pix_fmts[i])
831 if (avctx->codec->pix_fmts[i] == AV_PIX_FMT_NONE
832 && !((avctx->codec_id == AV_CODEC_ID_MJPEG || avctx->codec_id == AV_CODEC_ID_LJPEG)
833 && avctx->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL)) {
835 snprintf(buf, sizeof(buf), "%d", avctx->pix_fmt);
836 av_log(avctx, AV_LOG_ERROR, "Specified pixel format %s is invalid or not supported\n",
837 (char *)av_x_if_null(av_get_pix_fmt_name(avctx->pix_fmt), buf));
838 ret = AVERROR(EINVAL);
841 if (avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ420P ||
842 avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ411P ||
843 avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ422P ||
844 avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ440P ||
845 avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ444P)
846 avctx->color_range = AVCOL_RANGE_JPEG;
848 if (avctx->codec->supported_samplerates) {
849 for (i = 0; avctx->codec->supported_samplerates[i] != 0; i++)
850 if (avctx->sample_rate == avctx->codec->supported_samplerates[i])
852 if (avctx->codec->supported_samplerates[i] == 0) {
853 av_log(avctx, AV_LOG_ERROR, "Specified sample rate %d is not supported\n",
855 ret = AVERROR(EINVAL);
859 if (avctx->sample_rate < 0) {
860 av_log(avctx, AV_LOG_ERROR, "Specified sample rate %d is not supported\n",
862 ret = AVERROR(EINVAL);
865 if (avctx->codec->channel_layouts) {
866 if (!avctx->channel_layout) {
867 av_log(avctx, AV_LOG_WARNING, "Channel layout not specified\n");
869 for (i = 0; avctx->codec->channel_layouts[i] != 0; i++)
870 if (avctx->channel_layout == avctx->codec->channel_layouts[i])
872 if (avctx->codec->channel_layouts[i] == 0) {
874 av_get_channel_layout_string(buf, sizeof(buf), -1, avctx->channel_layout);
875 av_log(avctx, AV_LOG_ERROR, "Specified channel layout '%s' is not supported\n", buf);
876 ret = AVERROR(EINVAL);
881 if (avctx->channel_layout && avctx->channels) {
882 int channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
883 if (channels != avctx->channels) {
885 av_get_channel_layout_string(buf, sizeof(buf), -1, avctx->channel_layout);
886 av_log(avctx, AV_LOG_ERROR,
887 "Channel layout '%s' with %d channels does not match number of specified channels %d\n",
888 buf, channels, avctx->channels);
889 ret = AVERROR(EINVAL);
892 } else if (avctx->channel_layout) {
893 avctx->channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
895 if (avctx->channels < 0) {
896 av_log(avctx, AV_LOG_ERROR, "Specified number of channels %d is not supported\n",
898 ret = AVERROR(EINVAL);
901 if(avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
902 pixdesc = av_pix_fmt_desc_get(avctx->pix_fmt);
903 if ( avctx->bits_per_raw_sample < 0
904 || (avctx->bits_per_raw_sample > 8 && pixdesc->comp[0].depth <= 8)) {
905 av_log(avctx, AV_LOG_WARNING, "Specified bit depth %d not possible with the specified pixel formats depth %d\n",
906 avctx->bits_per_raw_sample, pixdesc->comp[0].depth);
907 avctx->bits_per_raw_sample = pixdesc->comp[0].depth;
909 if (avctx->width <= 0 || avctx->height <= 0) {
910 av_log(avctx, AV_LOG_ERROR, "dimensions not set\n");
911 ret = AVERROR(EINVAL);
915 if ( (avctx->codec_type == AVMEDIA_TYPE_VIDEO || avctx->codec_type == AVMEDIA_TYPE_AUDIO)
916 && avctx->bit_rate>0 && avctx->bit_rate<1000) {
917 av_log(avctx, AV_LOG_WARNING, "Bitrate %"PRId64" is extremely low, maybe you mean %"PRId64"k\n", avctx->bit_rate, avctx->bit_rate);
920 if (!avctx->rc_initial_buffer_occupancy)
921 avctx->rc_initial_buffer_occupancy = avctx->rc_buffer_size * 3LL / 4;
923 if (avctx->ticks_per_frame && avctx->time_base.num &&
924 avctx->ticks_per_frame > INT_MAX / avctx->time_base.num) {
925 av_log(avctx, AV_LOG_ERROR,
926 "ticks_per_frame %d too large for the timebase %d/%d.",
927 avctx->ticks_per_frame,
928 avctx->time_base.num,
929 avctx->time_base.den);
933 if (avctx->hw_frames_ctx) {
934 AVHWFramesContext *frames_ctx = (AVHWFramesContext*)avctx->hw_frames_ctx->data;
935 if (frames_ctx->format != avctx->pix_fmt) {
936 av_log(avctx, AV_LOG_ERROR,
937 "Mismatching AVCodecContext.pix_fmt and AVHWFramesContext.format\n");
938 ret = AVERROR(EINVAL);
941 if (avctx->sw_pix_fmt != AV_PIX_FMT_NONE &&
942 avctx->sw_pix_fmt != frames_ctx->sw_format) {
943 av_log(avctx, AV_LOG_ERROR,
944 "Mismatching AVCodecContext.sw_pix_fmt (%s) "
945 "and AVHWFramesContext.sw_format (%s)\n",
946 av_get_pix_fmt_name(avctx->sw_pix_fmt),
947 av_get_pix_fmt_name(frames_ctx->sw_format));
948 ret = AVERROR(EINVAL);
951 avctx->sw_pix_fmt = frames_ctx->sw_format;
955 avctx->pts_correction_num_faulty_pts =
956 avctx->pts_correction_num_faulty_dts = 0;
957 avctx->pts_correction_last_pts =
958 avctx->pts_correction_last_dts = INT64_MIN;
960 if ( !CONFIG_GRAY && avctx->flags & AV_CODEC_FLAG_GRAY
961 && avctx->codec_descriptor->type == AVMEDIA_TYPE_VIDEO)
962 av_log(avctx, AV_LOG_WARNING,
963 "gray decoding requested but not enabled at configuration time\n");
965 if ( avctx->codec->init && (!(avctx->active_thread_type&FF_THREAD_FRAME)
966 || avctx->internal->frame_thread_encoder)) {
967 ret = avctx->codec->init(avctx);
975 if (av_codec_is_decoder(avctx->codec)) {
976 if (!avctx->bit_rate)
977 avctx->bit_rate = get_bit_rate(avctx);
978 /* validate channel layout from the decoder */
979 if (avctx->channel_layout) {
980 int channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
981 if (!avctx->channels)
982 avctx->channels = channels;
983 else if (channels != avctx->channels) {
985 av_get_channel_layout_string(buf, sizeof(buf), -1, avctx->channel_layout);
986 av_log(avctx, AV_LOG_WARNING,
987 "Channel layout '%s' with %d channels does not match specified number of channels %d: "
988 "ignoring specified channel layout\n",
989 buf, channels, avctx->channels);
990 avctx->channel_layout = 0;
993 if (avctx->channels && avctx->channels < 0 ||
994 avctx->channels > FF_SANE_NB_CHANNELS) {
995 ret = AVERROR(EINVAL);
998 if (avctx->sub_charenc) {
999 if (avctx->codec_type != AVMEDIA_TYPE_SUBTITLE) {
1000 av_log(avctx, AV_LOG_ERROR, "Character encoding is only "
1001 "supported with subtitles codecs\n");
1002 ret = AVERROR(EINVAL);
1004 } else if (avctx->codec_descriptor->props & AV_CODEC_PROP_BITMAP_SUB) {
1005 av_log(avctx, AV_LOG_WARNING, "Codec '%s' is bitmap-based, "
1006 "subtitles character encoding will be ignored\n",
1007 avctx->codec_descriptor->name);
1008 avctx->sub_charenc_mode = FF_SUB_CHARENC_MODE_DO_NOTHING;
1010 /* input character encoding is set for a text based subtitle
1011 * codec at this point */
1012 if (avctx->sub_charenc_mode == FF_SUB_CHARENC_MODE_AUTOMATIC)
1013 avctx->sub_charenc_mode = FF_SUB_CHARENC_MODE_PRE_DECODER;
1015 if (avctx->sub_charenc_mode == FF_SUB_CHARENC_MODE_PRE_DECODER) {
1017 iconv_t cd = iconv_open("UTF-8", avctx->sub_charenc);
1018 if (cd == (iconv_t)-1) {
1019 ret = AVERROR(errno);
1020 av_log(avctx, AV_LOG_ERROR, "Unable to open iconv context "
1021 "with input character encoding \"%s\"\n", avctx->sub_charenc);
1026 av_log(avctx, AV_LOG_ERROR, "Character encoding subtitles "
1027 "conversion needs a libavcodec built with iconv support "
1028 "for this codec\n");
1029 ret = AVERROR(ENOSYS);
1036 #if FF_API_AVCTX_TIMEBASE
1037 if (avctx->framerate.num > 0 && avctx->framerate.den > 0)
1038 avctx->time_base = av_inv_q(av_mul_q(avctx->framerate, (AVRational){avctx->ticks_per_frame, 1}));
1041 if (codec->priv_data_size > 0 && avctx->priv_data && codec->priv_class) {
1042 av_assert0(*(const AVClass **)avctx->priv_data == codec->priv_class);
1046 ff_unlock_avcodec(codec);
1048 av_dict_free(options);
1055 (avctx->codec->caps_internal & FF_CODEC_CAP_INIT_CLEANUP))
1056 avctx->codec->close(avctx);
1058 if (codec->priv_class && codec->priv_data_size)
1059 av_opt_free(avctx->priv_data);
1062 #if FF_API_CODED_FRAME
1063 FF_DISABLE_DEPRECATION_WARNINGS
1064 av_frame_free(&avctx->coded_frame);
1065 FF_ENABLE_DEPRECATION_WARNINGS
1069 av_freep(&avctx->priv_data);
1070 if (avctx->internal) {
1071 av_frame_free(&avctx->internal->to_free);
1072 av_frame_free(&avctx->internal->compat_decode_frame);
1073 av_frame_free(&avctx->internal->buffer_frame);
1074 av_packet_free(&avctx->internal->buffer_pkt);
1075 av_packet_free(&avctx->internal->last_pkt_props);
1077 av_packet_free(&avctx->internal->ds.in_pkt);
1079 av_freep(&avctx->internal->pool);
1081 av_freep(&avctx->internal);
1082 avctx->codec = NULL;
1086 void avsubtitle_free(AVSubtitle *sub)
1090 for (i = 0; i < sub->num_rects; i++) {
1091 av_freep(&sub->rects[i]->data[0]);
1092 av_freep(&sub->rects[i]->data[1]);
1093 av_freep(&sub->rects[i]->data[2]);
1094 av_freep(&sub->rects[i]->data[3]);
1095 av_freep(&sub->rects[i]->text);
1096 av_freep(&sub->rects[i]->ass);
1097 av_freep(&sub->rects[i]);
1100 av_freep(&sub->rects);
1102 memset(sub, 0, sizeof(*sub));
1105 av_cold int avcodec_close(AVCodecContext *avctx)
1112 if (avcodec_is_open(avctx)) {
1113 FramePool *pool = avctx->internal->pool;
1114 if (CONFIG_FRAME_THREAD_ENCODER &&
1115 avctx->internal->frame_thread_encoder && avctx->thread_count > 1) {
1116 ff_frame_thread_encoder_free(avctx);
1118 if (HAVE_THREADS && avctx->internal->thread_ctx)
1119 ff_thread_free(avctx);
1120 if (avctx->codec && avctx->codec->close)
1121 avctx->codec->close(avctx);
1122 avctx->internal->byte_buffer_size = 0;
1123 av_freep(&avctx->internal->byte_buffer);
1124 av_frame_free(&avctx->internal->to_free);
1125 av_frame_free(&avctx->internal->compat_decode_frame);
1126 av_frame_free(&avctx->internal->buffer_frame);
1127 av_packet_free(&avctx->internal->buffer_pkt);
1128 av_packet_free(&avctx->internal->last_pkt_props);
1130 av_packet_free(&avctx->internal->ds.in_pkt);
1132 for (i = 0; i < FF_ARRAY_ELEMS(pool->pools); i++)
1133 av_buffer_pool_uninit(&pool->pools[i]);
1134 av_freep(&avctx->internal->pool);
1136 if (avctx->hwaccel && avctx->hwaccel->uninit)
1137 avctx->hwaccel->uninit(avctx);
1138 av_freep(&avctx->internal->hwaccel_priv_data);
1140 ff_decode_bsfs_uninit(avctx);
1142 av_freep(&avctx->internal);
1145 for (i = 0; i < avctx->nb_coded_side_data; i++)
1146 av_freep(&avctx->coded_side_data[i].data);
1147 av_freep(&avctx->coded_side_data);
1148 avctx->nb_coded_side_data = 0;
1150 av_buffer_unref(&avctx->hw_frames_ctx);
1151 av_buffer_unref(&avctx->hw_device_ctx);
1153 if (avctx->priv_data && avctx->codec && avctx->codec->priv_class)
1154 av_opt_free(avctx->priv_data);
1156 av_freep(&avctx->priv_data);
1157 if (av_codec_is_encoder(avctx->codec)) {
1158 av_freep(&avctx->extradata);
1159 #if FF_API_CODED_FRAME
1160 FF_DISABLE_DEPRECATION_WARNINGS
1161 av_frame_free(&avctx->coded_frame);
1162 FF_ENABLE_DEPRECATION_WARNINGS
1165 avctx->codec = NULL;
1166 avctx->active_thread_type = 0;
1171 static enum AVCodecID remap_deprecated_codec_id(enum AVCodecID id)
1174 //This is for future deprecatec codec ids, its empty since
1175 //last major bump but will fill up again over time, please don't remove it
1176 default : return id;
1180 static AVCodec *find_encdec(enum AVCodecID id, int encoder)
1182 AVCodec *p, *experimental = NULL;
1184 id= remap_deprecated_codec_id(id);
1186 if ((encoder ? av_codec_is_encoder(p) : av_codec_is_decoder(p)) &&
1188 if (p->capabilities & AV_CODEC_CAP_EXPERIMENTAL && !experimental) {
1195 return experimental;
1198 AVCodec *avcodec_find_encoder(enum AVCodecID id)
1200 return find_encdec(id, 1);
1203 AVCodec *avcodec_find_encoder_by_name(const char *name)
1210 if (av_codec_is_encoder(p) && strcmp(name, p->name) == 0)
1217 AVCodec *avcodec_find_decoder(enum AVCodecID id)
1219 return find_encdec(id, 0);
1222 AVCodec *avcodec_find_decoder_by_name(const char *name)
1229 if (av_codec_is_decoder(p) && strcmp(name, p->name) == 0)
1236 const char *avcodec_get_name(enum AVCodecID id)
1238 const AVCodecDescriptor *cd;
1241 if (id == AV_CODEC_ID_NONE)
1243 cd = avcodec_descriptor_get(id);
1246 av_log(NULL, AV_LOG_WARNING, "Codec 0x%x is not in the full list.\n", id);
1247 codec = avcodec_find_decoder(id);
1250 codec = avcodec_find_encoder(id);
1253 return "unknown_codec";
1256 size_t av_get_codec_tag_string(char *buf, size_t buf_size, unsigned int codec_tag)
1258 int i, len, ret = 0;
1260 #define TAG_PRINT(x) \
1261 (((x) >= '0' && (x) <= '9') || \
1262 ((x) >= 'a' && (x) <= 'z') || ((x) >= 'A' && (x) <= 'Z') || \
1263 ((x) == '.' || (x) == ' ' || (x) == '-' || (x) == '_'))
1265 for (i = 0; i < 4; i++) {
1266 len = snprintf(buf, buf_size,
1267 TAG_PRINT(codec_tag & 0xFF) ? "%c" : "[%d]", codec_tag & 0xFF);
1269 buf_size = buf_size > len ? buf_size - len : 0;
1276 void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)
1278 const char *codec_type;
1279 const char *codec_name;
1280 const char *profile = NULL;
1283 AVRational display_aspect_ratio;
1284 const char *separator = enc->dump_separator ? (const char *)enc->dump_separator : ", ";
1286 if (!buf || buf_size <= 0)
1288 codec_type = av_get_media_type_string(enc->codec_type);
1289 codec_name = avcodec_get_name(enc->codec_id);
1290 profile = avcodec_profile_name(enc->codec_id, enc->profile);
1292 snprintf(buf, buf_size, "%s: %s", codec_type ? codec_type : "unknown",
1294 buf[0] ^= 'a' ^ 'A'; /* first letter in uppercase */
1296 if (enc->codec && strcmp(enc->codec->name, codec_name))
1297 snprintf(buf + strlen(buf), buf_size - strlen(buf), " (%s)", enc->codec->name);
1300 snprintf(buf + strlen(buf), buf_size - strlen(buf), " (%s)", profile);
1301 if ( enc->codec_type == AVMEDIA_TYPE_VIDEO
1302 && av_log_get_level() >= AV_LOG_VERBOSE
1304 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1305 ", %d reference frame%s",
1306 enc->refs, enc->refs > 1 ? "s" : "");
1309 snprintf(buf + strlen(buf), buf_size - strlen(buf), " (%s / 0x%04X)",
1310 av_fourcc2str(enc->codec_tag), enc->codec_tag);
1312 switch (enc->codec_type) {
1313 case AVMEDIA_TYPE_VIDEO:
1315 char detail[256] = "(";
1317 av_strlcat(buf, separator, buf_size);
1319 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1320 "%s", enc->pix_fmt == AV_PIX_FMT_NONE ? "none" :
1321 av_get_pix_fmt_name(enc->pix_fmt));
1322 if (enc->bits_per_raw_sample && enc->pix_fmt != AV_PIX_FMT_NONE &&
1323 enc->bits_per_raw_sample < av_pix_fmt_desc_get(enc->pix_fmt)->comp[0].depth)
1324 av_strlcatf(detail, sizeof(detail), "%d bpc, ", enc->bits_per_raw_sample);
1325 if (enc->color_range != AVCOL_RANGE_UNSPECIFIED)
1326 av_strlcatf(detail, sizeof(detail), "%s, ",
1327 av_color_range_name(enc->color_range));
1329 if (enc->colorspace != AVCOL_SPC_UNSPECIFIED ||
1330 enc->color_primaries != AVCOL_PRI_UNSPECIFIED ||
1331 enc->color_trc != AVCOL_TRC_UNSPECIFIED) {
1332 if (enc->colorspace != (int)enc->color_primaries ||
1333 enc->colorspace != (int)enc->color_trc) {
1335 av_strlcatf(detail, sizeof(detail), "%s/%s/%s, ",
1336 av_color_space_name(enc->colorspace),
1337 av_color_primaries_name(enc->color_primaries),
1338 av_color_transfer_name(enc->color_trc));
1340 av_strlcatf(detail, sizeof(detail), "%s, ",
1341 av_get_colorspace_name(enc->colorspace));
1344 if (enc->field_order != AV_FIELD_UNKNOWN) {
1345 const char *field_order = "progressive";
1346 if (enc->field_order == AV_FIELD_TT)
1347 field_order = "top first";
1348 else if (enc->field_order == AV_FIELD_BB)
1349 field_order = "bottom first";
1350 else if (enc->field_order == AV_FIELD_TB)
1351 field_order = "top coded first (swapped)";
1352 else if (enc->field_order == AV_FIELD_BT)
1353 field_order = "bottom coded first (swapped)";
1355 av_strlcatf(detail, sizeof(detail), "%s, ", field_order);
1358 if (av_log_get_level() >= AV_LOG_VERBOSE &&
1359 enc->chroma_sample_location != AVCHROMA_LOC_UNSPECIFIED)
1360 av_strlcatf(detail, sizeof(detail), "%s, ",
1361 av_chroma_location_name(enc->chroma_sample_location));
1363 if (strlen(detail) > 1) {
1364 detail[strlen(detail) - 2] = 0;
1365 av_strlcatf(buf, buf_size, "%s)", detail);
1370 av_strlcat(buf, new_line ? separator : ", ", buf_size);
1372 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1374 enc->width, enc->height);
1376 if (av_log_get_level() >= AV_LOG_VERBOSE &&
1377 (enc->width != enc->coded_width ||
1378 enc->height != enc->coded_height))
1379 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1380 " (%dx%d)", enc->coded_width, enc->coded_height);
1382 if (enc->sample_aspect_ratio.num) {
1383 av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
1384 enc->width * (int64_t)enc->sample_aspect_ratio.num,
1385 enc->height * (int64_t)enc->sample_aspect_ratio.den,
1387 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1388 " [SAR %d:%d DAR %d:%d]",
1389 enc->sample_aspect_ratio.num, enc->sample_aspect_ratio.den,
1390 display_aspect_ratio.num, display_aspect_ratio.den);
1392 if (av_log_get_level() >= AV_LOG_DEBUG) {
1393 int g = av_gcd(enc->time_base.num, enc->time_base.den);
1394 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1396 enc->time_base.num / g, enc->time_base.den / g);
1400 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1401 ", q=%d-%d", enc->qmin, enc->qmax);
1403 if (enc->properties & FF_CODEC_PROPERTY_CLOSED_CAPTIONS)
1404 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1405 ", Closed Captions");
1406 if (enc->properties & FF_CODEC_PROPERTY_LOSSLESS)
1407 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1411 case AVMEDIA_TYPE_AUDIO:
1412 av_strlcat(buf, separator, buf_size);
1414 if (enc->sample_rate) {
1415 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1416 "%d Hz, ", enc->sample_rate);
1418 av_get_channel_layout_string(buf + strlen(buf), buf_size - strlen(buf), enc->channels, enc->channel_layout);
1419 if (enc->sample_fmt != AV_SAMPLE_FMT_NONE) {
1420 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1421 ", %s", av_get_sample_fmt_name(enc->sample_fmt));
1423 if ( enc->bits_per_raw_sample > 0
1424 && enc->bits_per_raw_sample != av_get_bytes_per_sample(enc->sample_fmt) * 8)
1425 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1426 " (%d bit)", enc->bits_per_raw_sample);
1427 if (av_log_get_level() >= AV_LOG_VERBOSE) {
1428 if (enc->initial_padding)
1429 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1430 ", delay %d", enc->initial_padding);
1431 if (enc->trailing_padding)
1432 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1433 ", padding %d", enc->trailing_padding);
1436 case AVMEDIA_TYPE_DATA:
1437 if (av_log_get_level() >= AV_LOG_DEBUG) {
1438 int g = av_gcd(enc->time_base.num, enc->time_base.den);
1440 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1442 enc->time_base.num / g, enc->time_base.den / g);
1445 case AVMEDIA_TYPE_SUBTITLE:
1447 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1448 ", %dx%d", enc->width, enc->height);
1454 if (enc->flags & AV_CODEC_FLAG_PASS1)
1455 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1457 if (enc->flags & AV_CODEC_FLAG_PASS2)
1458 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1461 bitrate = get_bit_rate(enc);
1463 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1464 ", %"PRId64" kb/s", bitrate / 1000);
1465 } else if (enc->rc_max_rate > 0) {
1466 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1467 ", max. %"PRId64" kb/s", enc->rc_max_rate / 1000);
1471 const char *av_get_profile_name(const AVCodec *codec, int profile)
1474 if (profile == FF_PROFILE_UNKNOWN || !codec->profiles)
1477 for (p = codec->profiles; p->profile != FF_PROFILE_UNKNOWN; p++)
1478 if (p->profile == profile)
1484 const char *avcodec_profile_name(enum AVCodecID codec_id, int profile)
1486 const AVCodecDescriptor *desc = avcodec_descriptor_get(codec_id);
1489 if (profile == FF_PROFILE_UNKNOWN || !desc || !desc->profiles)
1492 for (p = desc->profiles; p->profile != FF_PROFILE_UNKNOWN; p++)
1493 if (p->profile == profile)
1499 unsigned avcodec_version(void)
1501 // av_assert0(AV_CODEC_ID_V410==164);
1502 av_assert0(AV_CODEC_ID_PCM_S8_PLANAR==65563);
1503 av_assert0(AV_CODEC_ID_ADPCM_G722==69660);
1504 // av_assert0(AV_CODEC_ID_BMV_AUDIO==86071);
1505 av_assert0(AV_CODEC_ID_SRT==94216);
1506 av_assert0(LIBAVCODEC_VERSION_MICRO >= 100);
1508 return LIBAVCODEC_VERSION_INT;
1511 const char *avcodec_configuration(void)
1513 return FFMPEG_CONFIGURATION;
1516 const char *avcodec_license(void)
1518 #define LICENSE_PREFIX "libavcodec license: "
1519 return LICENSE_PREFIX FFMPEG_LICENSE + sizeof(LICENSE_PREFIX) - 1;
1522 int av_get_exact_bits_per_sample(enum AVCodecID codec_id)
1525 case AV_CODEC_ID_8SVX_EXP:
1526 case AV_CODEC_ID_8SVX_FIB:
1527 case AV_CODEC_ID_ADPCM_CT:
1528 case AV_CODEC_ID_ADPCM_IMA_APC:
1529 case AV_CODEC_ID_ADPCM_IMA_EA_SEAD:
1530 case AV_CODEC_ID_ADPCM_IMA_OKI:
1531 case AV_CODEC_ID_ADPCM_IMA_WS:
1532 case AV_CODEC_ID_ADPCM_G722:
1533 case AV_CODEC_ID_ADPCM_YAMAHA:
1534 case AV_CODEC_ID_ADPCM_AICA:
1536 case AV_CODEC_ID_DSD_LSBF:
1537 case AV_CODEC_ID_DSD_MSBF:
1538 case AV_CODEC_ID_DSD_LSBF_PLANAR:
1539 case AV_CODEC_ID_DSD_MSBF_PLANAR:
1540 case AV_CODEC_ID_PCM_ALAW:
1541 case AV_CODEC_ID_PCM_MULAW:
1542 case AV_CODEC_ID_PCM_S8:
1543 case AV_CODEC_ID_PCM_S8_PLANAR:
1544 case AV_CODEC_ID_PCM_U8:
1545 case AV_CODEC_ID_PCM_ZORK:
1546 case AV_CODEC_ID_SDX2_DPCM:
1548 case AV_CODEC_ID_PCM_S16BE:
1549 case AV_CODEC_ID_PCM_S16BE_PLANAR:
1550 case AV_CODEC_ID_PCM_S16LE:
1551 case AV_CODEC_ID_PCM_S16LE_PLANAR:
1552 case AV_CODEC_ID_PCM_U16BE:
1553 case AV_CODEC_ID_PCM_U16LE:
1555 case AV_CODEC_ID_PCM_S24DAUD:
1556 case AV_CODEC_ID_PCM_S24BE:
1557 case AV_CODEC_ID_PCM_S24LE:
1558 case AV_CODEC_ID_PCM_S24LE_PLANAR:
1559 case AV_CODEC_ID_PCM_U24BE:
1560 case AV_CODEC_ID_PCM_U24LE:
1562 case AV_CODEC_ID_PCM_S32BE:
1563 case AV_CODEC_ID_PCM_S32LE:
1564 case AV_CODEC_ID_PCM_S32LE_PLANAR:
1565 case AV_CODEC_ID_PCM_U32BE:
1566 case AV_CODEC_ID_PCM_U32LE:
1567 case AV_CODEC_ID_PCM_F32BE:
1568 case AV_CODEC_ID_PCM_F32LE:
1569 case AV_CODEC_ID_PCM_F24LE:
1570 case AV_CODEC_ID_PCM_F16LE:
1572 case AV_CODEC_ID_PCM_F64BE:
1573 case AV_CODEC_ID_PCM_F64LE:
1574 case AV_CODEC_ID_PCM_S64BE:
1575 case AV_CODEC_ID_PCM_S64LE:
1582 enum AVCodecID av_get_pcm_codec(enum AVSampleFormat fmt, int be)
1584 static const enum AVCodecID map[AV_SAMPLE_FMT_NB][2] = {
1585 [AV_SAMPLE_FMT_U8 ] = { AV_CODEC_ID_PCM_U8, AV_CODEC_ID_PCM_U8 },
1586 [AV_SAMPLE_FMT_S16 ] = { AV_CODEC_ID_PCM_S16LE, AV_CODEC_ID_PCM_S16BE },
1587 [AV_SAMPLE_FMT_S32 ] = { AV_CODEC_ID_PCM_S32LE, AV_CODEC_ID_PCM_S32BE },
1588 [AV_SAMPLE_FMT_FLT ] = { AV_CODEC_ID_PCM_F32LE, AV_CODEC_ID_PCM_F32BE },
1589 [AV_SAMPLE_FMT_DBL ] = { AV_CODEC_ID_PCM_F64LE, AV_CODEC_ID_PCM_F64BE },
1590 [AV_SAMPLE_FMT_U8P ] = { AV_CODEC_ID_PCM_U8, AV_CODEC_ID_PCM_U8 },
1591 [AV_SAMPLE_FMT_S16P] = { AV_CODEC_ID_PCM_S16LE, AV_CODEC_ID_PCM_S16BE },
1592 [AV_SAMPLE_FMT_S32P] = { AV_CODEC_ID_PCM_S32LE, AV_CODEC_ID_PCM_S32BE },
1593 [AV_SAMPLE_FMT_S64P] = { AV_CODEC_ID_PCM_S64LE, AV_CODEC_ID_PCM_S64BE },
1594 [AV_SAMPLE_FMT_FLTP] = { AV_CODEC_ID_PCM_F32LE, AV_CODEC_ID_PCM_F32BE },
1595 [AV_SAMPLE_FMT_DBLP] = { AV_CODEC_ID_PCM_F64LE, AV_CODEC_ID_PCM_F64BE },
1597 if (fmt < 0 || fmt >= AV_SAMPLE_FMT_NB)
1598 return AV_CODEC_ID_NONE;
1599 if (be < 0 || be > 1)
1601 return map[fmt][be];
1604 int av_get_bits_per_sample(enum AVCodecID codec_id)
1607 case AV_CODEC_ID_ADPCM_SBPRO_2:
1609 case AV_CODEC_ID_ADPCM_SBPRO_3:
1611 case AV_CODEC_ID_ADPCM_SBPRO_4:
1612 case AV_CODEC_ID_ADPCM_IMA_WAV:
1613 case AV_CODEC_ID_ADPCM_IMA_QT:
1614 case AV_CODEC_ID_ADPCM_SWF:
1615 case AV_CODEC_ID_ADPCM_MS:
1618 return av_get_exact_bits_per_sample(codec_id);
1622 static int get_audio_frame_duration(enum AVCodecID id, int sr, int ch, int ba,
1623 uint32_t tag, int bits_per_coded_sample, int64_t bitrate,
1624 uint8_t * extradata, int frame_size, int frame_bytes)
1626 int bps = av_get_exact_bits_per_sample(id);
1627 int framecount = (ba > 0 && frame_bytes / ba > 0) ? frame_bytes / ba : 1;
1629 /* codecs with an exact constant bits per sample */
1630 if (bps > 0 && ch > 0 && frame_bytes > 0 && ch < 32768 && bps < 32768)
1631 return (frame_bytes * 8LL) / (bps * ch);
1632 bps = bits_per_coded_sample;
1634 /* codecs with a fixed packet duration */
1636 case AV_CODEC_ID_ADPCM_ADX: return 32;
1637 case AV_CODEC_ID_ADPCM_IMA_QT: return 64;
1638 case AV_CODEC_ID_ADPCM_EA_XAS: return 128;
1639 case AV_CODEC_ID_AMR_NB:
1640 case AV_CODEC_ID_EVRC:
1641 case AV_CODEC_ID_GSM:
1642 case AV_CODEC_ID_QCELP:
1643 case AV_CODEC_ID_RA_288: return 160;
1644 case AV_CODEC_ID_AMR_WB:
1645 case AV_CODEC_ID_GSM_MS: return 320;
1646 case AV_CODEC_ID_MP1: return 384;
1647 case AV_CODEC_ID_ATRAC1: return 512;
1648 case AV_CODEC_ID_ATRAC3: return 1024 * framecount;
1649 case AV_CODEC_ID_ATRAC3P: return 2048;
1650 case AV_CODEC_ID_MP2:
1651 case AV_CODEC_ID_MUSEPACK7: return 1152;
1652 case AV_CODEC_ID_AC3: return 1536;
1656 /* calc from sample rate */
1657 if (id == AV_CODEC_ID_TTA)
1658 return 256 * sr / 245;
1659 else if (id == AV_CODEC_ID_DST)
1660 return 588 * sr / 44100;
1663 /* calc from sample rate and channels */
1664 if (id == AV_CODEC_ID_BINKAUDIO_DCT)
1665 return (480 << (sr / 22050)) / ch;
1668 if (id == AV_CODEC_ID_MP3)
1669 return sr <= 24000 ? 576 : 1152;
1673 /* calc from block_align */
1674 if (id == AV_CODEC_ID_SIPR) {
1676 case 20: return 160;
1677 case 19: return 144;
1678 case 29: return 288;
1679 case 37: return 480;
1681 } else if (id == AV_CODEC_ID_ILBC) {
1683 case 38: return 160;
1684 case 50: return 240;
1689 if (frame_bytes > 0) {
1690 /* calc from frame_bytes only */
1691 if (id == AV_CODEC_ID_TRUESPEECH)
1692 return 240 * (frame_bytes / 32);
1693 if (id == AV_CODEC_ID_NELLYMOSER)
1694 return 256 * (frame_bytes / 64);
1695 if (id == AV_CODEC_ID_RA_144)
1696 return 160 * (frame_bytes / 20);
1697 if (id == AV_CODEC_ID_G723_1)
1698 return 240 * (frame_bytes / 24);
1701 /* calc from frame_bytes and bits_per_coded_sample */
1702 if (id == AV_CODEC_ID_ADPCM_G726 || id == AV_CODEC_ID_ADPCM_G726LE)
1703 return frame_bytes * 8 / bps;
1706 if (ch > 0 && ch < INT_MAX/16) {
1707 /* calc from frame_bytes and channels */
1709 case AV_CODEC_ID_ADPCM_AFC:
1710 return frame_bytes / (9 * ch) * 16;
1711 case AV_CODEC_ID_ADPCM_PSX:
1712 case AV_CODEC_ID_ADPCM_DTK:
1713 return frame_bytes / (16 * ch) * 28;
1714 case AV_CODEC_ID_ADPCM_4XM:
1715 case AV_CODEC_ID_ADPCM_IMA_DAT4:
1716 case AV_CODEC_ID_ADPCM_IMA_ISS:
1717 return (frame_bytes - 4 * ch) * 2 / ch;
1718 case AV_CODEC_ID_ADPCM_IMA_SMJPEG:
1719 return (frame_bytes - 4) * 2 / ch;
1720 case AV_CODEC_ID_ADPCM_IMA_AMV:
1721 return (frame_bytes - 8) * 2 / ch;
1722 case AV_CODEC_ID_ADPCM_THP:
1723 case AV_CODEC_ID_ADPCM_THP_LE:
1725 return frame_bytes * 14 / (8 * ch);
1727 case AV_CODEC_ID_ADPCM_XA:
1728 return (frame_bytes / 128) * 224 / ch;
1729 case AV_CODEC_ID_INTERPLAY_DPCM:
1730 return (frame_bytes - 6 - ch) / ch;
1731 case AV_CODEC_ID_ROQ_DPCM:
1732 return (frame_bytes - 8) / ch;
1733 case AV_CODEC_ID_XAN_DPCM:
1734 return (frame_bytes - 2 * ch) / ch;
1735 case AV_CODEC_ID_MACE3:
1736 return 3 * frame_bytes / ch;
1737 case AV_CODEC_ID_MACE6:
1738 return 6 * frame_bytes / ch;
1739 case AV_CODEC_ID_PCM_LXF:
1740 return 2 * (frame_bytes / (5 * ch));
1741 case AV_CODEC_ID_IAC:
1742 case AV_CODEC_ID_IMC:
1743 return 4 * frame_bytes / ch;
1747 /* calc from frame_bytes, channels, and codec_tag */
1748 if (id == AV_CODEC_ID_SOL_DPCM) {
1750 return frame_bytes / ch;
1752 return frame_bytes * 2 / ch;
1757 /* calc from frame_bytes, channels, and block_align */
1758 int blocks = frame_bytes / ba;
1760 case AV_CODEC_ID_ADPCM_IMA_WAV:
1761 if (bps < 2 || bps > 5)
1763 return blocks * (1 + (ba - 4 * ch) / (bps * ch) * 8);
1764 case AV_CODEC_ID_ADPCM_IMA_DK3:
1765 return blocks * (((ba - 16) * 2 / 3 * 4) / ch);
1766 case AV_CODEC_ID_ADPCM_IMA_DK4:
1767 return blocks * (1 + (ba - 4 * ch) * 2 / ch);
1768 case AV_CODEC_ID_ADPCM_IMA_RAD:
1769 return blocks * ((ba - 4 * ch) * 2 / ch);
1770 case AV_CODEC_ID_ADPCM_MS:
1771 return blocks * (2 + (ba - 7 * ch) * 2 / ch);
1772 case AV_CODEC_ID_ADPCM_MTAF:
1773 return blocks * (ba - 16) * 2 / ch;
1778 /* calc from frame_bytes, channels, and bits_per_coded_sample */
1780 case AV_CODEC_ID_PCM_DVD:
1781 if(bps<4 || frame_bytes<3)
1783 return 2 * ((frame_bytes - 3) / ((bps * 2 / 8) * ch));
1784 case AV_CODEC_ID_PCM_BLURAY:
1785 if(bps<4 || frame_bytes<4)
1787 return (frame_bytes - 4) / ((FFALIGN(ch, 2) * bps) / 8);
1788 case AV_CODEC_ID_S302M:
1789 return 2 * (frame_bytes / ((bps + 4) / 4)) / ch;
1795 /* Fall back on using frame_size */
1796 if (frame_size > 1 && frame_bytes)
1799 //For WMA we currently have no other means to calculate duration thus we
1800 //do it here by assuming CBR, which is true for all known cases.
1801 if (bitrate > 0 && frame_bytes > 0 && sr > 0 && ba > 1) {
1802 if (id == AV_CODEC_ID_WMAV1 || id == AV_CODEC_ID_WMAV2)
1803 return (frame_bytes * 8LL * sr) / bitrate;
1809 int av_get_audio_frame_duration(AVCodecContext *avctx, int frame_bytes)
1811 return get_audio_frame_duration(avctx->codec_id, avctx->sample_rate,
1812 avctx->channels, avctx->block_align,
1813 avctx->codec_tag, avctx->bits_per_coded_sample,
1814 avctx->bit_rate, avctx->extradata, avctx->frame_size,
1818 int av_get_audio_frame_duration2(AVCodecParameters *par, int frame_bytes)
1820 return get_audio_frame_duration(par->codec_id, par->sample_rate,
1821 par->channels, par->block_align,
1822 par->codec_tag, par->bits_per_coded_sample,
1823 par->bit_rate, par->extradata, par->frame_size,
1828 int ff_thread_init(AVCodecContext *s)
1835 unsigned int av_xiphlacing(unsigned char *s, unsigned int v)
1849 int ff_match_2uint16(const uint16_t(*tab)[2], int size, int a, int b)
1852 for (i = 0; i < size && !(tab[i][0] == a && tab[i][1] == b); i++) ;
1856 const AVCodecHWConfig *avcodec_get_hw_config(const AVCodec *codec, int index)
1859 if (!codec->hw_configs || index < 0)
1861 for (i = 0; i <= index; i++)
1862 if (!codec->hw_configs[i])
1864 return &codec->hw_configs[index]->public;
1867 #if FF_API_USER_VISIBLE_AVHWACCEL
1868 AVHWAccel *av_hwaccel_next(const AVHWAccel *hwaccel)
1873 void av_register_hwaccel(AVHWAccel *hwaccel)
1879 int av_lockmgr_register(int (*cb)(void **mutex, enum AVLockOp op))
1885 unsigned int avpriv_toupper4(unsigned int x)
1887 return av_toupper(x & 0xFF) +
1888 (av_toupper((x >> 8) & 0xFF) << 8) +
1889 (av_toupper((x >> 16) & 0xFF) << 16) +
1890 ((unsigned)av_toupper((x >> 24) & 0xFF) << 24);
1893 int ff_thread_ref_frame(ThreadFrame *dst, ThreadFrame *src)
1897 dst->owner[0] = src->owner[0];
1898 dst->owner[1] = src->owner[1];
1900 ret = av_frame_ref(dst->f, src->f);
1904 av_assert0(!dst->progress);
1906 if (src->progress &&
1907 !(dst->progress = av_buffer_ref(src->progress))) {
1908 ff_thread_release_buffer(dst->owner[0], dst);
1909 return AVERROR(ENOMEM);
1917 enum AVPixelFormat ff_thread_get_format(AVCodecContext *avctx, const enum AVPixelFormat *fmt)
1919 return ff_get_format(avctx, fmt);
1922 int ff_thread_get_buffer(AVCodecContext *avctx, ThreadFrame *f, int flags)
1924 f->owner[0] = f->owner[1] = avctx;
1925 return ff_get_buffer(avctx, f->f, flags);
1928 void ff_thread_release_buffer(AVCodecContext *avctx, ThreadFrame *f)
1931 av_frame_unref(f->f);
1934 void ff_thread_finish_setup(AVCodecContext *avctx)
1938 void ff_thread_report_progress(ThreadFrame *f, int progress, int field)
1942 void ff_thread_await_progress(ThreadFrame *f, int progress, int field)
1946 int ff_thread_can_start_frame(AVCodecContext *avctx)
1951 int ff_alloc_entries(AVCodecContext *avctx, int count)
1956 void ff_reset_entries(AVCodecContext *avctx)
1960 void ff_thread_await_progress2(AVCodecContext *avctx, int field, int thread, int shift)
1964 void ff_thread_report_progress2(AVCodecContext *avctx, int field, int thread, int n)
1970 int avcodec_is_open(AVCodecContext *s)
1972 return !!s->internal;
1975 int avpriv_bprint_to_extradata(AVCodecContext *avctx, struct AVBPrint *buf)
1980 ret = av_bprint_finalize(buf, &str);
1983 if (!av_bprint_is_complete(buf)) {
1985 return AVERROR(ENOMEM);
1988 avctx->extradata = str;
1989 /* Note: the string is NUL terminated (so extradata can be read as a
1990 * string), but the ending character is not accounted in the size (in
1991 * binary formats you are likely not supposed to mux that character). When
1992 * extradata is copied, it is also padded with AV_INPUT_BUFFER_PADDING_SIZE
1994 avctx->extradata_size = buf->len;
1998 const uint8_t *avpriv_find_start_code(const uint8_t *av_restrict p,
2000 uint32_t *av_restrict state)
2004 av_assert0(p <= end);
2008 for (i = 0; i < 3; i++) {
2009 uint32_t tmp = *state << 8;
2010 *state = tmp + *(p++);
2011 if (tmp == 0x100 || p == end)
2016 if (p[-1] > 1 ) p += 3;
2017 else if (p[-2] ) p += 2;
2018 else if (p[-3]|(p[-1]-1)) p++;
2025 p = FFMIN(p, end) - 4;
2026 *state = AV_RB32(p);
2031 AVCPBProperties *av_cpb_properties_alloc(size_t *size)
2033 AVCPBProperties *props = av_mallocz(sizeof(AVCPBProperties));
2038 *size = sizeof(*props);
2040 props->vbv_delay = UINT64_MAX;
2045 AVCPBProperties *ff_add_cpb_side_data(AVCodecContext *avctx)
2047 AVPacketSideData *tmp;
2048 AVCPBProperties *props;
2051 props = av_cpb_properties_alloc(&size);
2055 tmp = av_realloc_array(avctx->coded_side_data, avctx->nb_coded_side_data + 1, sizeof(*tmp));
2061 avctx->coded_side_data = tmp;
2062 avctx->nb_coded_side_data++;
2064 avctx->coded_side_data[avctx->nb_coded_side_data - 1].type = AV_PKT_DATA_CPB_PROPERTIES;
2065 avctx->coded_side_data[avctx->nb_coded_side_data - 1].data = (uint8_t*)props;
2066 avctx->coded_side_data[avctx->nb_coded_side_data - 1].size = size;
2071 static void codec_parameters_reset(AVCodecParameters *par)
2073 av_freep(&par->extradata);
2075 memset(par, 0, sizeof(*par));
2077 par->codec_type = AVMEDIA_TYPE_UNKNOWN;
2078 par->codec_id = AV_CODEC_ID_NONE;
2080 par->field_order = AV_FIELD_UNKNOWN;
2081 par->color_range = AVCOL_RANGE_UNSPECIFIED;
2082 par->color_primaries = AVCOL_PRI_UNSPECIFIED;
2083 par->color_trc = AVCOL_TRC_UNSPECIFIED;
2084 par->color_space = AVCOL_SPC_UNSPECIFIED;
2085 par->chroma_location = AVCHROMA_LOC_UNSPECIFIED;
2086 par->sample_aspect_ratio = (AVRational){ 0, 1 };
2087 par->profile = FF_PROFILE_UNKNOWN;
2088 par->level = FF_LEVEL_UNKNOWN;
2091 AVCodecParameters *avcodec_parameters_alloc(void)
2093 AVCodecParameters *par = av_mallocz(sizeof(*par));
2097 codec_parameters_reset(par);
2101 void avcodec_parameters_free(AVCodecParameters **ppar)
2103 AVCodecParameters *par = *ppar;
2107 codec_parameters_reset(par);
2112 int avcodec_parameters_copy(AVCodecParameters *dst, const AVCodecParameters *src)
2114 codec_parameters_reset(dst);
2115 memcpy(dst, src, sizeof(*dst));
2117 dst->extradata = NULL;
2118 dst->extradata_size = 0;
2119 if (src->extradata) {
2120 dst->extradata = av_mallocz(src->extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);
2121 if (!dst->extradata)
2122 return AVERROR(ENOMEM);
2123 memcpy(dst->extradata, src->extradata, src->extradata_size);
2124 dst->extradata_size = src->extradata_size;
2130 int avcodec_parameters_from_context(AVCodecParameters *par,
2131 const AVCodecContext *codec)
2133 codec_parameters_reset(par);
2135 par->codec_type = codec->codec_type;
2136 par->codec_id = codec->codec_id;
2137 par->codec_tag = codec->codec_tag;
2139 par->bit_rate = codec->bit_rate;
2140 par->bits_per_coded_sample = codec->bits_per_coded_sample;
2141 par->bits_per_raw_sample = codec->bits_per_raw_sample;
2142 par->profile = codec->profile;
2143 par->level = codec->level;
2145 switch (par->codec_type) {
2146 case AVMEDIA_TYPE_VIDEO:
2147 par->format = codec->pix_fmt;
2148 par->width = codec->width;
2149 par->height = codec->height;
2150 par->field_order = codec->field_order;
2151 par->color_range = codec->color_range;
2152 par->color_primaries = codec->color_primaries;
2153 par->color_trc = codec->color_trc;
2154 par->color_space = codec->colorspace;
2155 par->chroma_location = codec->chroma_sample_location;
2156 par->sample_aspect_ratio = codec->sample_aspect_ratio;
2157 par->video_delay = codec->has_b_frames;
2159 case AVMEDIA_TYPE_AUDIO:
2160 par->format = codec->sample_fmt;
2161 par->channel_layout = codec->channel_layout;
2162 par->channels = codec->channels;
2163 par->sample_rate = codec->sample_rate;
2164 par->block_align = codec->block_align;
2165 par->frame_size = codec->frame_size;
2166 par->initial_padding = codec->initial_padding;
2167 par->trailing_padding = codec->trailing_padding;
2168 par->seek_preroll = codec->seek_preroll;
2170 case AVMEDIA_TYPE_SUBTITLE:
2171 par->width = codec->width;
2172 par->height = codec->height;
2176 if (codec->extradata) {
2177 par->extradata = av_mallocz(codec->extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);
2178 if (!par->extradata)
2179 return AVERROR(ENOMEM);
2180 memcpy(par->extradata, codec->extradata, codec->extradata_size);
2181 par->extradata_size = codec->extradata_size;
2187 int avcodec_parameters_to_context(AVCodecContext *codec,
2188 const AVCodecParameters *par)
2190 codec->codec_type = par->codec_type;
2191 codec->codec_id = par->codec_id;
2192 codec->codec_tag = par->codec_tag;
2194 codec->bit_rate = par->bit_rate;
2195 codec->bits_per_coded_sample = par->bits_per_coded_sample;
2196 codec->bits_per_raw_sample = par->bits_per_raw_sample;
2197 codec->profile = par->profile;
2198 codec->level = par->level;
2200 switch (par->codec_type) {
2201 case AVMEDIA_TYPE_VIDEO:
2202 codec->pix_fmt = par->format;
2203 codec->width = par->width;
2204 codec->height = par->height;
2205 codec->field_order = par->field_order;
2206 codec->color_range = par->color_range;
2207 codec->color_primaries = par->color_primaries;
2208 codec->color_trc = par->color_trc;
2209 codec->colorspace = par->color_space;
2210 codec->chroma_sample_location = par->chroma_location;
2211 codec->sample_aspect_ratio = par->sample_aspect_ratio;
2212 codec->has_b_frames = par->video_delay;
2214 case AVMEDIA_TYPE_AUDIO:
2215 codec->sample_fmt = par->format;
2216 codec->channel_layout = par->channel_layout;
2217 codec->channels = par->channels;
2218 codec->sample_rate = par->sample_rate;
2219 codec->block_align = par->block_align;
2220 codec->frame_size = par->frame_size;
2222 codec->initial_padding = par->initial_padding;
2223 codec->trailing_padding = par->trailing_padding;
2224 codec->seek_preroll = par->seek_preroll;
2226 case AVMEDIA_TYPE_SUBTITLE:
2227 codec->width = par->width;
2228 codec->height = par->height;
2232 if (par->extradata) {
2233 av_freep(&codec->extradata);
2234 codec->extradata = av_mallocz(par->extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);
2235 if (!codec->extradata)
2236 return AVERROR(ENOMEM);
2237 memcpy(codec->extradata, par->extradata, par->extradata_size);
2238 codec->extradata_size = par->extradata_size;
2244 int ff_alloc_a53_sei(const AVFrame *frame, size_t prefix_len,
2245 void **data, size_t *sei_size)
2247 AVFrameSideData *side_data = NULL;
2251 side_data = av_frame_get_side_data(frame, AV_FRAME_DATA_A53_CC);
2258 *sei_size = side_data->size + 11;
2259 *data = av_mallocz(*sei_size + prefix_len);
2261 return AVERROR(ENOMEM);
2262 sei_data = (uint8_t*)*data + prefix_len;
2270 * 'GA94' is standard in North America for ATSC, but hard coding
2271 * this style may not be the right thing to do -- other formats
2272 * do exist. This information is not available in the side_data
2273 * so we are going with this right now.
2275 AV_WL32(sei_data + 3, MKTAG('G', 'A', '9', '4'));
2277 sei_data[8] = ((side_data->size/3) & 0x1f) | 0x40;
2280 memcpy(sei_data + 10, side_data->data, side_data->size);
2282 sei_data[side_data->size+10] = 255;
2287 int64_t ff_guess_coded_bitrate(AVCodecContext *avctx)
2289 AVRational framerate = avctx->framerate;
2290 int bits_per_coded_sample = avctx->bits_per_coded_sample;
2293 if (!(framerate.num && framerate.den))
2294 framerate = av_inv_q(avctx->time_base);
2295 if (!(framerate.num && framerate.den))
2298 if (!bits_per_coded_sample) {
2299 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(avctx->pix_fmt);
2300 bits_per_coded_sample = av_get_bits_per_pixel(desc);
2302 bitrate = (int64_t)bits_per_coded_sample * avctx->width * avctx->height *
2303 framerate.num / framerate.den;