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/atomic.h"
30 #include "libavutil/attributes.h"
31 #include "libavutil/avassert.h"
32 #include "libavutil/avstring.h"
33 #include "libavutil/bprint.h"
34 #include "libavutil/channel_layout.h"
35 #include "libavutil/crc.h"
36 #include "libavutil/frame.h"
37 #include "libavutil/hwcontext.h"
38 #include "libavutil/internal.h"
39 #include "libavutil/mathematics.h"
40 #include "libavutil/mem_internal.h"
41 #include "libavutil/pixdesc.h"
42 #include "libavutil/imgutils.h"
43 #include "libavutil/samplefmt.h"
44 #include "libavutil/dict.h"
45 #include "libavutil/thread.h"
49 #include "libavutil/opt.h"
51 #include "mpegvideo.h"
53 #include "frame_thread_encoder.h"
56 #include "bytestream.h"
60 #include <stdatomic.h>
67 #include "libavutil/ffversion.h"
68 const char av_codec_ffversion[] = "FFmpeg version " FFMPEG_VERSION;
70 static AVMutex codec_mutex = AV_MUTEX_INITIALIZER;
72 void av_fast_padded_malloc(void *ptr, unsigned int *size, size_t min_size)
75 if (min_size > SIZE_MAX - AV_INPUT_BUFFER_PADDING_SIZE) {
80 if (!ff_fast_malloc(p, size, min_size + AV_INPUT_BUFFER_PADDING_SIZE, 1))
81 memset(*p + min_size, 0, AV_INPUT_BUFFER_PADDING_SIZE);
84 void av_fast_padded_mallocz(void *ptr, unsigned int *size, size_t min_size)
87 if (min_size > SIZE_MAX - AV_INPUT_BUFFER_PADDING_SIZE) {
92 if (!ff_fast_malloc(p, size, min_size + AV_INPUT_BUFFER_PADDING_SIZE, 1))
93 memset(*p, 0, min_size + AV_INPUT_BUFFER_PADDING_SIZE);
96 /* encoder management */
97 static AVCodec *first_avcodec = NULL;
98 static AVCodec **last_avcodec = &first_avcodec;
100 AVCodec *av_codec_next(const AVCodec *c)
105 return first_avcodec;
108 static av_cold void avcodec_init(void)
110 static int initialized = 0;
112 if (initialized != 0)
117 ff_me_cmp_init_static();
120 int av_codec_is_encoder(const AVCodec *codec)
122 return codec && (codec->encode_sub || codec->encode2 ||codec->send_frame);
125 int av_codec_is_decoder(const AVCodec *codec)
127 return codec && (codec->decode || codec->receive_frame);
130 av_cold void avcodec_register(AVCodec *codec)
137 while(*p || avpriv_atomic_ptr_cas((void * volatile *)p, NULL, codec))
139 last_avcodec = &codec->next;
141 if (codec->init_static_data)
142 codec->init_static_data(codec);
145 int ff_set_dimensions(AVCodecContext *s, int width, int height)
147 int ret = av_image_check_size2(width, height, s->max_pixels, AV_PIX_FMT_NONE, 0, s);
152 s->coded_width = width;
153 s->coded_height = height;
154 s->width = AV_CEIL_RSHIFT(width, s->lowres);
155 s->height = AV_CEIL_RSHIFT(height, s->lowres);
160 int ff_set_sar(AVCodecContext *avctx, AVRational sar)
162 int ret = av_image_check_sar(avctx->width, avctx->height, sar);
165 av_log(avctx, AV_LOG_WARNING, "ignoring invalid SAR: %d/%d\n",
167 avctx->sample_aspect_ratio = (AVRational){ 0, 1 };
170 avctx->sample_aspect_ratio = sar;
175 int ff_side_data_update_matrix_encoding(AVFrame *frame,
176 enum AVMatrixEncoding matrix_encoding)
178 AVFrameSideData *side_data;
179 enum AVMatrixEncoding *data;
181 side_data = av_frame_get_side_data(frame, AV_FRAME_DATA_MATRIXENCODING);
183 side_data = av_frame_new_side_data(frame, AV_FRAME_DATA_MATRIXENCODING,
184 sizeof(enum AVMatrixEncoding));
187 return AVERROR(ENOMEM);
189 data = (enum AVMatrixEncoding*)side_data->data;
190 *data = matrix_encoding;
195 void avcodec_align_dimensions2(AVCodecContext *s, int *width, int *height,
196 int linesize_align[AV_NUM_DATA_POINTERS])
201 AVPixFmtDescriptor const *desc = av_pix_fmt_desc_get(s->pix_fmt);
204 w_align = 1 << desc->log2_chroma_w;
205 h_align = 1 << desc->log2_chroma_h;
208 switch (s->pix_fmt) {
209 case AV_PIX_FMT_YUV420P:
210 case AV_PIX_FMT_YUYV422:
211 case AV_PIX_FMT_YVYU422:
212 case AV_PIX_FMT_UYVY422:
213 case AV_PIX_FMT_YUV422P:
214 case AV_PIX_FMT_YUV440P:
215 case AV_PIX_FMT_YUV444P:
216 case AV_PIX_FMT_GBRP:
217 case AV_PIX_FMT_GBRAP:
218 case AV_PIX_FMT_GRAY8:
219 case AV_PIX_FMT_GRAY16BE:
220 case AV_PIX_FMT_GRAY16LE:
221 case AV_PIX_FMT_YUVJ420P:
222 case AV_PIX_FMT_YUVJ422P:
223 case AV_PIX_FMT_YUVJ440P:
224 case AV_PIX_FMT_YUVJ444P:
225 case AV_PIX_FMT_YUVA420P:
226 case AV_PIX_FMT_YUVA422P:
227 case AV_PIX_FMT_YUVA444P:
228 case AV_PIX_FMT_YUV420P9LE:
229 case AV_PIX_FMT_YUV420P9BE:
230 case AV_PIX_FMT_YUV420P10LE:
231 case AV_PIX_FMT_YUV420P10BE:
232 case AV_PIX_FMT_YUV420P12LE:
233 case AV_PIX_FMT_YUV420P12BE:
234 case AV_PIX_FMT_YUV420P14LE:
235 case AV_PIX_FMT_YUV420P14BE:
236 case AV_PIX_FMT_YUV420P16LE:
237 case AV_PIX_FMT_YUV420P16BE:
238 case AV_PIX_FMT_YUVA420P9LE:
239 case AV_PIX_FMT_YUVA420P9BE:
240 case AV_PIX_FMT_YUVA420P10LE:
241 case AV_PIX_FMT_YUVA420P10BE:
242 case AV_PIX_FMT_YUVA420P16LE:
243 case AV_PIX_FMT_YUVA420P16BE:
244 case AV_PIX_FMT_YUV422P9LE:
245 case AV_PIX_FMT_YUV422P9BE:
246 case AV_PIX_FMT_YUV422P10LE:
247 case AV_PIX_FMT_YUV422P10BE:
248 case AV_PIX_FMT_YUV422P12LE:
249 case AV_PIX_FMT_YUV422P12BE:
250 case AV_PIX_FMT_YUV422P14LE:
251 case AV_PIX_FMT_YUV422P14BE:
252 case AV_PIX_FMT_YUV422P16LE:
253 case AV_PIX_FMT_YUV422P16BE:
254 case AV_PIX_FMT_YUVA422P9LE:
255 case AV_PIX_FMT_YUVA422P9BE:
256 case AV_PIX_FMT_YUVA422P10LE:
257 case AV_PIX_FMT_YUVA422P10BE:
258 case AV_PIX_FMT_YUVA422P16LE:
259 case AV_PIX_FMT_YUVA422P16BE:
260 case AV_PIX_FMT_YUV440P10LE:
261 case AV_PIX_FMT_YUV440P10BE:
262 case AV_PIX_FMT_YUV440P12LE:
263 case AV_PIX_FMT_YUV440P12BE:
264 case AV_PIX_FMT_YUV444P9LE:
265 case AV_PIX_FMT_YUV444P9BE:
266 case AV_PIX_FMT_YUV444P10LE:
267 case AV_PIX_FMT_YUV444P10BE:
268 case AV_PIX_FMT_YUV444P12LE:
269 case AV_PIX_FMT_YUV444P12BE:
270 case AV_PIX_FMT_YUV444P14LE:
271 case AV_PIX_FMT_YUV444P14BE:
272 case AV_PIX_FMT_YUV444P16LE:
273 case AV_PIX_FMT_YUV444P16BE:
274 case AV_PIX_FMT_YUVA444P9LE:
275 case AV_PIX_FMT_YUVA444P9BE:
276 case AV_PIX_FMT_YUVA444P10LE:
277 case AV_PIX_FMT_YUVA444P10BE:
278 case AV_PIX_FMT_YUVA444P16LE:
279 case AV_PIX_FMT_YUVA444P16BE:
280 case AV_PIX_FMT_GBRP9LE:
281 case AV_PIX_FMT_GBRP9BE:
282 case AV_PIX_FMT_GBRP10LE:
283 case AV_PIX_FMT_GBRP10BE:
284 case AV_PIX_FMT_GBRP12LE:
285 case AV_PIX_FMT_GBRP12BE:
286 case AV_PIX_FMT_GBRP14LE:
287 case AV_PIX_FMT_GBRP14BE:
288 case AV_PIX_FMT_GBRP16LE:
289 case AV_PIX_FMT_GBRP16BE:
290 case AV_PIX_FMT_GBRAP12LE:
291 case AV_PIX_FMT_GBRAP12BE:
292 case AV_PIX_FMT_GBRAP16LE:
293 case AV_PIX_FMT_GBRAP16BE:
294 w_align = 16; //FIXME assume 16 pixel per macroblock
295 h_align = 16 * 2; // interlaced needs 2 macroblocks height
297 case AV_PIX_FMT_YUV411P:
298 case AV_PIX_FMT_YUVJ411P:
299 case AV_PIX_FMT_UYYVYY411:
303 case AV_PIX_FMT_YUV410P:
304 if (s->codec_id == AV_CODEC_ID_SVQ1) {
309 case AV_PIX_FMT_RGB555:
310 if (s->codec_id == AV_CODEC_ID_RPZA) {
314 if (s->codec_id == AV_CODEC_ID_INTERPLAY_VIDEO) {
319 case AV_PIX_FMT_PAL8:
320 case AV_PIX_FMT_BGR8:
321 case AV_PIX_FMT_RGB8:
322 if (s->codec_id == AV_CODEC_ID_SMC ||
323 s->codec_id == AV_CODEC_ID_CINEPAK) {
327 if (s->codec_id == AV_CODEC_ID_JV ||
328 s->codec_id == AV_CODEC_ID_INTERPLAY_VIDEO) {
333 case AV_PIX_FMT_BGR24:
334 if ((s->codec_id == AV_CODEC_ID_MSZH) ||
335 (s->codec_id == AV_CODEC_ID_ZLIB)) {
340 case AV_PIX_FMT_RGB24:
341 if (s->codec_id == AV_CODEC_ID_CINEPAK) {
350 if (s->codec_id == AV_CODEC_ID_IFF_ILBM) {
351 w_align = FFMAX(w_align, 8);
354 *width = FFALIGN(*width, w_align);
355 *height = FFALIGN(*height, h_align);
356 if (s->codec_id == AV_CODEC_ID_H264 || s->lowres) {
357 // some of the optimized chroma MC reads one line too much
358 // which is also done in mpeg decoders with lowres > 0
361 // H.264 uses edge emulation for out of frame motion vectors, for this
362 // it requires a temporary area large enough to hold a 21x21 block,
363 // increasing witdth ensure that the temporary area is large enough,
364 // the next rounded up width is 32
365 *width = FFMAX(*width, 32);
368 for (i = 0; i < 4; i++)
369 linesize_align[i] = STRIDE_ALIGN;
372 void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height)
374 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(s->pix_fmt);
375 int chroma_shift = desc->log2_chroma_w;
376 int linesize_align[AV_NUM_DATA_POINTERS];
379 avcodec_align_dimensions2(s, width, height, linesize_align);
380 align = FFMAX(linesize_align[0], linesize_align[3]);
381 linesize_align[1] <<= chroma_shift;
382 linesize_align[2] <<= chroma_shift;
383 align = FFMAX3(align, linesize_align[1], linesize_align[2]);
384 *width = FFALIGN(*width, align);
387 int avcodec_enum_to_chroma_pos(int *xpos, int *ypos, enum AVChromaLocation pos)
389 if (pos <= AVCHROMA_LOC_UNSPECIFIED || pos >= AVCHROMA_LOC_NB)
390 return AVERROR(EINVAL);
393 *xpos = (pos&1) * 128;
394 *ypos = ((pos>>1)^(pos<4)) * 128;
399 enum AVChromaLocation avcodec_chroma_pos_to_enum(int xpos, int ypos)
403 for (pos = AVCHROMA_LOC_UNSPECIFIED + 1; pos < AVCHROMA_LOC_NB; pos++) {
404 if (avcodec_enum_to_chroma_pos(&xout, &yout, pos) == 0 && xout == xpos && yout == ypos)
407 return AVCHROMA_LOC_UNSPECIFIED;
410 int avcodec_fill_audio_frame(AVFrame *frame, int nb_channels,
411 enum AVSampleFormat sample_fmt, const uint8_t *buf,
412 int buf_size, int align)
414 int ch, planar, needed_size, ret = 0;
416 needed_size = av_samples_get_buffer_size(NULL, nb_channels,
417 frame->nb_samples, sample_fmt,
419 if (buf_size < needed_size)
420 return AVERROR(EINVAL);
422 planar = av_sample_fmt_is_planar(sample_fmt);
423 if (planar && nb_channels > AV_NUM_DATA_POINTERS) {
424 if (!(frame->extended_data = av_mallocz_array(nb_channels,
425 sizeof(*frame->extended_data))))
426 return AVERROR(ENOMEM);
428 frame->extended_data = frame->data;
431 if ((ret = av_samples_fill_arrays(frame->extended_data, &frame->linesize[0],
432 (uint8_t *)(intptr_t)buf, nb_channels, frame->nb_samples,
433 sample_fmt, align)) < 0) {
434 if (frame->extended_data != frame->data)
435 av_freep(&frame->extended_data);
438 if (frame->extended_data != frame->data) {
439 for (ch = 0; ch < AV_NUM_DATA_POINTERS; ch++)
440 frame->data[ch] = frame->extended_data[ch];
446 void ff_color_frame(AVFrame *frame, const int c[4])
448 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(frame->format);
451 av_assert0(desc->flags & AV_PIX_FMT_FLAG_PLANAR);
453 for (p = 0; p<desc->nb_components; p++) {
454 uint8_t *dst = frame->data[p];
455 int is_chroma = p == 1 || p == 2;
456 int bytes = is_chroma ? AV_CEIL_RSHIFT(frame->width, desc->log2_chroma_w) : frame->width;
457 int height = is_chroma ? AV_CEIL_RSHIFT(frame->height, desc->log2_chroma_h) : frame->height;
458 for (y = 0; y < height; y++) {
459 if (desc->comp[0].depth >= 9) {
460 for (x = 0; x<bytes; x++)
461 ((uint16_t*)dst)[x] = c[p];
463 memset(dst, c[p], bytes);
464 dst += frame->linesize[p];
469 int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2), void *arg, int *ret, int count, int size)
473 for (i = 0; i < count; i++) {
474 int r = func(c, (char *)arg + i * size);
482 int avcodec_default_execute2(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2, int jobnr, int threadnr), void *arg, int *ret, int count)
486 for (i = 0; i < count; i++) {
487 int r = func(c, arg, i, 0);
495 enum AVPixelFormat avpriv_find_pix_fmt(const PixelFormatTag *tags,
498 while (tags->pix_fmt >= 0) {
499 if (tags->fourcc == fourcc)
500 return tags->pix_fmt;
503 return AV_PIX_FMT_NONE;
506 #if FF_API_CODEC_GET_SET
507 MAKE_ACCESSORS(AVCodecContext, codec, AVRational, pkt_timebase)
508 MAKE_ACCESSORS(AVCodecContext, codec, const AVCodecDescriptor *, codec_descriptor)
509 MAKE_ACCESSORS(AVCodecContext, codec, int, lowres)
510 MAKE_ACCESSORS(AVCodecContext, codec, int, seek_preroll)
511 MAKE_ACCESSORS(AVCodecContext, codec, uint16_t*, chroma_intra_matrix)
513 unsigned av_codec_get_codec_properties(const AVCodecContext *codec)
515 return codec->properties;
518 int av_codec_get_max_lowres(const AVCodec *codec)
520 return codec->max_lowres;
524 int avpriv_codec_get_cap_skip_frame_fill_param(const AVCodec *codec){
525 return !!(codec->caps_internal & FF_CODEC_CAP_SKIP_FRAME_FILL_PARAM);
528 static int64_t get_bit_rate(AVCodecContext *ctx)
533 switch (ctx->codec_type) {
534 case AVMEDIA_TYPE_VIDEO:
535 case AVMEDIA_TYPE_DATA:
536 case AVMEDIA_TYPE_SUBTITLE:
537 case AVMEDIA_TYPE_ATTACHMENT:
538 bit_rate = ctx->bit_rate;
540 case AVMEDIA_TYPE_AUDIO:
541 bits_per_sample = av_get_bits_per_sample(ctx->codec_id);
542 bit_rate = bits_per_sample ? ctx->sample_rate * (int64_t)ctx->channels * bits_per_sample : ctx->bit_rate;
552 static void ff_lock_avcodec(AVCodecContext *log_ctx, const AVCodec *codec)
554 if (!(codec->caps_internal & FF_CODEC_CAP_INIT_THREADSAFE) && codec->init)
555 ff_mutex_lock(&codec_mutex);
558 static void ff_unlock_avcodec(const AVCodec *codec)
560 if (!(codec->caps_internal & FF_CODEC_CAP_INIT_THREADSAFE) && codec->init)
561 ff_mutex_unlock(&codec_mutex);
564 int attribute_align_arg ff_codec_open2_recursive(AVCodecContext *avctx, const AVCodec *codec, AVDictionary **options)
568 ff_unlock_avcodec(codec);
570 ret = avcodec_open2(avctx, codec, options);
572 ff_lock_avcodec(avctx, codec);
576 int attribute_align_arg avcodec_open2(AVCodecContext *avctx, const AVCodec *codec, AVDictionary **options)
579 AVDictionary *tmp = NULL;
580 const AVPixFmtDescriptor *pixdesc;
582 if (avcodec_is_open(avctx))
585 if ((!codec && !avctx->codec)) {
586 av_log(avctx, AV_LOG_ERROR, "No codec provided to avcodec_open2()\n");
587 return AVERROR(EINVAL);
589 if ((codec && avctx->codec && codec != avctx->codec)) {
590 av_log(avctx, AV_LOG_ERROR, "This AVCodecContext was allocated for %s, "
591 "but %s passed to avcodec_open2()\n", avctx->codec->name, codec->name);
592 return AVERROR(EINVAL);
595 codec = avctx->codec;
597 if (avctx->extradata_size < 0 || avctx->extradata_size >= FF_MAX_EXTRADATA_SIZE)
598 return AVERROR(EINVAL);
601 av_dict_copy(&tmp, *options, 0);
603 ff_lock_avcodec(avctx, codec);
605 avctx->internal = av_mallocz(sizeof(AVCodecInternal));
606 if (!avctx->internal) {
607 ret = AVERROR(ENOMEM);
611 avctx->internal->pool = av_mallocz(sizeof(*avctx->internal->pool));
612 if (!avctx->internal->pool) {
613 ret = AVERROR(ENOMEM);
617 avctx->internal->to_free = av_frame_alloc();
618 if (!avctx->internal->to_free) {
619 ret = AVERROR(ENOMEM);
623 avctx->internal->compat_decode_frame = av_frame_alloc();
624 if (!avctx->internal->compat_decode_frame) {
625 ret = AVERROR(ENOMEM);
629 avctx->internal->buffer_frame = av_frame_alloc();
630 if (!avctx->internal->buffer_frame) {
631 ret = AVERROR(ENOMEM);
635 avctx->internal->buffer_pkt = av_packet_alloc();
636 if (!avctx->internal->buffer_pkt) {
637 ret = AVERROR(ENOMEM);
641 avctx->internal->ds.in_pkt = av_packet_alloc();
642 if (!avctx->internal->ds.in_pkt) {
643 ret = AVERROR(ENOMEM);
647 avctx->internal->last_pkt_props = av_packet_alloc();
648 if (!avctx->internal->last_pkt_props) {
649 ret = AVERROR(ENOMEM);
653 avctx->internal->skip_samples_multiplier = 1;
655 if (codec->priv_data_size > 0) {
656 if (!avctx->priv_data) {
657 avctx->priv_data = av_mallocz(codec->priv_data_size);
658 if (!avctx->priv_data) {
659 ret = AVERROR(ENOMEM);
662 if (codec->priv_class) {
663 *(const AVClass **)avctx->priv_data = codec->priv_class;
664 av_opt_set_defaults(avctx->priv_data);
667 if (codec->priv_class && (ret = av_opt_set_dict(avctx->priv_data, &tmp)) < 0)
670 avctx->priv_data = NULL;
672 if ((ret = av_opt_set_dict(avctx, &tmp)) < 0)
675 if (avctx->codec_whitelist && av_match_list(codec->name, avctx->codec_whitelist, ',') <= 0) {
676 av_log(avctx, AV_LOG_ERROR, "Codec (%s) not on whitelist \'%s\'\n", codec->name, avctx->codec_whitelist);
677 ret = AVERROR(EINVAL);
681 // only call ff_set_dimensions() for non H.264/VP6F/DXV codecs so as not to overwrite previously setup dimensions
682 if (!(avctx->coded_width && avctx->coded_height && avctx->width && avctx->height &&
683 (avctx->codec_id == AV_CODEC_ID_H264 || avctx->codec_id == AV_CODEC_ID_VP6F || avctx->codec_id == AV_CODEC_ID_DXV))) {
684 if (avctx->coded_width && avctx->coded_height)
685 ret = ff_set_dimensions(avctx, avctx->coded_width, avctx->coded_height);
686 else if (avctx->width && avctx->height)
687 ret = ff_set_dimensions(avctx, avctx->width, avctx->height);
692 if ((avctx->coded_width || avctx->coded_height || avctx->width || avctx->height)
693 && ( av_image_check_size2(avctx->coded_width, avctx->coded_height, avctx->max_pixels, AV_PIX_FMT_NONE, 0, avctx) < 0
694 || av_image_check_size2(avctx->width, avctx->height, avctx->max_pixels, AV_PIX_FMT_NONE, 0, avctx) < 0)) {
695 av_log(avctx, AV_LOG_WARNING, "Ignoring invalid width/height values\n");
696 ff_set_dimensions(avctx, 0, 0);
699 if (avctx->width > 0 && avctx->height > 0) {
700 if (av_image_check_sar(avctx->width, avctx->height,
701 avctx->sample_aspect_ratio) < 0) {
702 av_log(avctx, AV_LOG_WARNING, "ignoring invalid SAR: %u/%u\n",
703 avctx->sample_aspect_ratio.num,
704 avctx->sample_aspect_ratio.den);
705 avctx->sample_aspect_ratio = (AVRational){ 0, 1 };
709 /* if the decoder init function was already called previously,
710 * free the already allocated subtitle_header before overwriting it */
711 if (av_codec_is_decoder(codec))
712 av_freep(&avctx->subtitle_header);
714 if (avctx->channels > FF_SANE_NB_CHANNELS) {
715 ret = AVERROR(EINVAL);
719 avctx->codec = codec;
720 if ((avctx->codec_type == AVMEDIA_TYPE_UNKNOWN || avctx->codec_type == codec->type) &&
721 avctx->codec_id == AV_CODEC_ID_NONE) {
722 avctx->codec_type = codec->type;
723 avctx->codec_id = codec->id;
725 if (avctx->codec_id != codec->id || (avctx->codec_type != codec->type
726 && avctx->codec_type != AVMEDIA_TYPE_ATTACHMENT)) {
727 av_log(avctx, AV_LOG_ERROR, "Codec type or id mismatches\n");
728 ret = AVERROR(EINVAL);
731 avctx->frame_number = 0;
732 avctx->codec_descriptor = avcodec_descriptor_get(avctx->codec_id);
734 if ((avctx->codec->capabilities & AV_CODEC_CAP_EXPERIMENTAL) &&
735 avctx->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
736 const char *codec_string = av_codec_is_encoder(codec) ? "encoder" : "decoder";
738 av_log(avctx, AV_LOG_ERROR,
739 "The %s '%s' is experimental but experimental codecs are not enabled, "
740 "add '-strict %d' if you want to use it.\n",
741 codec_string, codec->name, FF_COMPLIANCE_EXPERIMENTAL);
742 codec2 = av_codec_is_encoder(codec) ? avcodec_find_encoder(codec->id) : avcodec_find_decoder(codec->id);
743 if (!(codec2->capabilities & AV_CODEC_CAP_EXPERIMENTAL))
744 av_log(avctx, AV_LOG_ERROR, "Alternatively use the non experimental %s '%s'.\n",
745 codec_string, codec2->name);
746 ret = AVERROR_EXPERIMENTAL;
750 if (avctx->codec_type == AVMEDIA_TYPE_AUDIO &&
751 (!avctx->time_base.num || !avctx->time_base.den)) {
752 avctx->time_base.num = 1;
753 avctx->time_base.den = avctx->sample_rate;
757 av_log(avctx, AV_LOG_WARNING, "Warning: not compiled with thread support, using thread emulation\n");
759 if (CONFIG_FRAME_THREAD_ENCODER && av_codec_is_encoder(avctx->codec)) {
760 ff_unlock_avcodec(codec); //we will instantiate a few encoders thus kick the counter to prevent false detection of a problem
761 ret = ff_frame_thread_encoder_init(avctx, options ? *options : NULL);
762 ff_lock_avcodec(avctx, codec);
768 && !(avctx->internal->frame_thread_encoder && (avctx->active_thread_type&FF_THREAD_FRAME))) {
769 ret = ff_thread_init(avctx);
774 if (!HAVE_THREADS && !(codec->capabilities & AV_CODEC_CAP_AUTO_THREADS))
775 avctx->thread_count = 1;
777 if (avctx->codec->max_lowres < avctx->lowres || avctx->lowres < 0) {
778 av_log(avctx, AV_LOG_WARNING, "The maximum value for lowres supported by the decoder is %d\n",
779 avctx->codec->max_lowres);
780 avctx->lowres = avctx->codec->max_lowres;
783 if (av_codec_is_encoder(avctx->codec)) {
785 #if FF_API_CODED_FRAME
786 FF_DISABLE_DEPRECATION_WARNINGS
787 avctx->coded_frame = av_frame_alloc();
788 if (!avctx->coded_frame) {
789 ret = AVERROR(ENOMEM);
792 FF_ENABLE_DEPRECATION_WARNINGS
795 if (avctx->time_base.num <= 0 || avctx->time_base.den <= 0) {
796 av_log(avctx, AV_LOG_ERROR, "The encoder timebase is not set.\n");
797 ret = AVERROR(EINVAL);
801 if (avctx->codec->sample_fmts) {
802 for (i = 0; avctx->codec->sample_fmts[i] != AV_SAMPLE_FMT_NONE; i++) {
803 if (avctx->sample_fmt == avctx->codec->sample_fmts[i])
805 if (avctx->channels == 1 &&
806 av_get_planar_sample_fmt(avctx->sample_fmt) ==
807 av_get_planar_sample_fmt(avctx->codec->sample_fmts[i])) {
808 avctx->sample_fmt = avctx->codec->sample_fmts[i];
812 if (avctx->codec->sample_fmts[i] == AV_SAMPLE_FMT_NONE) {
814 snprintf(buf, sizeof(buf), "%d", avctx->sample_fmt);
815 av_log(avctx, AV_LOG_ERROR, "Specified sample format %s is invalid or not supported\n",
816 (char *)av_x_if_null(av_get_sample_fmt_name(avctx->sample_fmt), buf));
817 ret = AVERROR(EINVAL);
821 if (avctx->codec->pix_fmts) {
822 for (i = 0; avctx->codec->pix_fmts[i] != AV_PIX_FMT_NONE; i++)
823 if (avctx->pix_fmt == avctx->codec->pix_fmts[i])
825 if (avctx->codec->pix_fmts[i] == AV_PIX_FMT_NONE
826 && !((avctx->codec_id == AV_CODEC_ID_MJPEG || avctx->codec_id == AV_CODEC_ID_LJPEG)
827 && avctx->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL)) {
829 snprintf(buf, sizeof(buf), "%d", avctx->pix_fmt);
830 av_log(avctx, AV_LOG_ERROR, "Specified pixel format %s is invalid or not supported\n",
831 (char *)av_x_if_null(av_get_pix_fmt_name(avctx->pix_fmt), buf));
832 ret = AVERROR(EINVAL);
835 if (avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ420P ||
836 avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ411P ||
837 avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ422P ||
838 avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ440P ||
839 avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ444P)
840 avctx->color_range = AVCOL_RANGE_JPEG;
842 if (avctx->codec->supported_samplerates) {
843 for (i = 0; avctx->codec->supported_samplerates[i] != 0; i++)
844 if (avctx->sample_rate == avctx->codec->supported_samplerates[i])
846 if (avctx->codec->supported_samplerates[i] == 0) {
847 av_log(avctx, AV_LOG_ERROR, "Specified sample rate %d is not supported\n",
849 ret = AVERROR(EINVAL);
853 if (avctx->sample_rate < 0) {
854 av_log(avctx, AV_LOG_ERROR, "Specified sample rate %d is not supported\n",
856 ret = AVERROR(EINVAL);
859 if (avctx->codec->channel_layouts) {
860 if (!avctx->channel_layout) {
861 av_log(avctx, AV_LOG_WARNING, "Channel layout not specified\n");
863 for (i = 0; avctx->codec->channel_layouts[i] != 0; i++)
864 if (avctx->channel_layout == avctx->codec->channel_layouts[i])
866 if (avctx->codec->channel_layouts[i] == 0) {
868 av_get_channel_layout_string(buf, sizeof(buf), -1, avctx->channel_layout);
869 av_log(avctx, AV_LOG_ERROR, "Specified channel layout '%s' is not supported\n", buf);
870 ret = AVERROR(EINVAL);
875 if (avctx->channel_layout && avctx->channels) {
876 int channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
877 if (channels != avctx->channels) {
879 av_get_channel_layout_string(buf, sizeof(buf), -1, avctx->channel_layout);
880 av_log(avctx, AV_LOG_ERROR,
881 "Channel layout '%s' with %d channels does not match number of specified channels %d\n",
882 buf, channels, avctx->channels);
883 ret = AVERROR(EINVAL);
886 } else if (avctx->channel_layout) {
887 avctx->channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
889 if (avctx->channels < 0) {
890 av_log(avctx, AV_LOG_ERROR, "Specified number of channels %d is not supported\n",
892 ret = AVERROR(EINVAL);
895 if(avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
896 pixdesc = av_pix_fmt_desc_get(avctx->pix_fmt);
897 if ( avctx->bits_per_raw_sample < 0
898 || (avctx->bits_per_raw_sample > 8 && pixdesc->comp[0].depth <= 8)) {
899 av_log(avctx, AV_LOG_WARNING, "Specified bit depth %d not possible with the specified pixel formats depth %d\n",
900 avctx->bits_per_raw_sample, pixdesc->comp[0].depth);
901 avctx->bits_per_raw_sample = pixdesc->comp[0].depth;
903 if (avctx->width <= 0 || avctx->height <= 0) {
904 av_log(avctx, AV_LOG_ERROR, "dimensions not set\n");
905 ret = AVERROR(EINVAL);
909 if ( (avctx->codec_type == AVMEDIA_TYPE_VIDEO || avctx->codec_type == AVMEDIA_TYPE_AUDIO)
910 && avctx->bit_rate>0 && avctx->bit_rate<1000) {
911 av_log(avctx, AV_LOG_WARNING, "Bitrate %"PRId64" is extremely low, maybe you mean %"PRId64"k\n", avctx->bit_rate, avctx->bit_rate);
914 if (!avctx->rc_initial_buffer_occupancy)
915 avctx->rc_initial_buffer_occupancy = avctx->rc_buffer_size * 3LL / 4;
917 if (avctx->ticks_per_frame && avctx->time_base.num &&
918 avctx->ticks_per_frame > INT_MAX / avctx->time_base.num) {
919 av_log(avctx, AV_LOG_ERROR,
920 "ticks_per_frame %d too large for the timebase %d/%d.",
921 avctx->ticks_per_frame,
922 avctx->time_base.num,
923 avctx->time_base.den);
927 if (avctx->hw_frames_ctx) {
928 AVHWFramesContext *frames_ctx = (AVHWFramesContext*)avctx->hw_frames_ctx->data;
929 if (frames_ctx->format != avctx->pix_fmt) {
930 av_log(avctx, AV_LOG_ERROR,
931 "Mismatching AVCodecContext.pix_fmt and AVHWFramesContext.format\n");
932 ret = AVERROR(EINVAL);
935 if (avctx->sw_pix_fmt != AV_PIX_FMT_NONE &&
936 avctx->sw_pix_fmt != frames_ctx->sw_format) {
937 av_log(avctx, AV_LOG_ERROR,
938 "Mismatching AVCodecContext.sw_pix_fmt (%s) "
939 "and AVHWFramesContext.sw_format (%s)\n",
940 av_get_pix_fmt_name(avctx->sw_pix_fmt),
941 av_get_pix_fmt_name(frames_ctx->sw_format));
942 ret = AVERROR(EINVAL);
945 avctx->sw_pix_fmt = frames_ctx->sw_format;
949 avctx->pts_correction_num_faulty_pts =
950 avctx->pts_correction_num_faulty_dts = 0;
951 avctx->pts_correction_last_pts =
952 avctx->pts_correction_last_dts = INT64_MIN;
954 if ( !CONFIG_GRAY && avctx->flags & AV_CODEC_FLAG_GRAY
955 && avctx->codec_descriptor->type == AVMEDIA_TYPE_VIDEO)
956 av_log(avctx, AV_LOG_WARNING,
957 "gray decoding requested but not enabled at configuration time\n");
959 if ( avctx->codec->init && (!(avctx->active_thread_type&FF_THREAD_FRAME)
960 || avctx->internal->frame_thread_encoder)) {
961 ret = avctx->codec->init(avctx);
969 if (av_codec_is_decoder(avctx->codec)) {
970 if (!avctx->bit_rate)
971 avctx->bit_rate = get_bit_rate(avctx);
972 /* validate channel layout from the decoder */
973 if (avctx->channel_layout) {
974 int channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
975 if (!avctx->channels)
976 avctx->channels = channels;
977 else if (channels != avctx->channels) {
979 av_get_channel_layout_string(buf, sizeof(buf), -1, avctx->channel_layout);
980 av_log(avctx, AV_LOG_WARNING,
981 "Channel layout '%s' with %d channels does not match specified number of channels %d: "
982 "ignoring specified channel layout\n",
983 buf, channels, avctx->channels);
984 avctx->channel_layout = 0;
987 if (avctx->channels && avctx->channels < 0 ||
988 avctx->channels > FF_SANE_NB_CHANNELS) {
989 ret = AVERROR(EINVAL);
992 if (avctx->sub_charenc) {
993 if (avctx->codec_type != AVMEDIA_TYPE_SUBTITLE) {
994 av_log(avctx, AV_LOG_ERROR, "Character encoding is only "
995 "supported with subtitles codecs\n");
996 ret = AVERROR(EINVAL);
998 } else if (avctx->codec_descriptor->props & AV_CODEC_PROP_BITMAP_SUB) {
999 av_log(avctx, AV_LOG_WARNING, "Codec '%s' is bitmap-based, "
1000 "subtitles character encoding will be ignored\n",
1001 avctx->codec_descriptor->name);
1002 avctx->sub_charenc_mode = FF_SUB_CHARENC_MODE_DO_NOTHING;
1004 /* input character encoding is set for a text based subtitle
1005 * codec at this point */
1006 if (avctx->sub_charenc_mode == FF_SUB_CHARENC_MODE_AUTOMATIC)
1007 avctx->sub_charenc_mode = FF_SUB_CHARENC_MODE_PRE_DECODER;
1009 if (avctx->sub_charenc_mode == FF_SUB_CHARENC_MODE_PRE_DECODER) {
1011 iconv_t cd = iconv_open("UTF-8", avctx->sub_charenc);
1012 if (cd == (iconv_t)-1) {
1013 ret = AVERROR(errno);
1014 av_log(avctx, AV_LOG_ERROR, "Unable to open iconv context "
1015 "with input character encoding \"%s\"\n", avctx->sub_charenc);
1020 av_log(avctx, AV_LOG_ERROR, "Character encoding subtitles "
1021 "conversion needs a libavcodec built with iconv support "
1022 "for this codec\n");
1023 ret = AVERROR(ENOSYS);
1030 #if FF_API_AVCTX_TIMEBASE
1031 if (avctx->framerate.num > 0 && avctx->framerate.den > 0)
1032 avctx->time_base = av_inv_q(av_mul_q(avctx->framerate, (AVRational){avctx->ticks_per_frame, 1}));
1035 if (codec->priv_data_size > 0 && avctx->priv_data && codec->priv_class) {
1036 av_assert0(*(const AVClass **)avctx->priv_data == codec->priv_class);
1040 ff_unlock_avcodec(codec);
1042 av_dict_free(options);
1049 (avctx->codec->caps_internal & FF_CODEC_CAP_INIT_CLEANUP))
1050 avctx->codec->close(avctx);
1052 if (codec->priv_class && codec->priv_data_size)
1053 av_opt_free(avctx->priv_data);
1056 #if FF_API_CODED_FRAME
1057 FF_DISABLE_DEPRECATION_WARNINGS
1058 av_frame_free(&avctx->coded_frame);
1059 FF_ENABLE_DEPRECATION_WARNINGS
1063 av_freep(&avctx->priv_data);
1064 if (avctx->internal) {
1065 av_frame_free(&avctx->internal->to_free);
1066 av_frame_free(&avctx->internal->compat_decode_frame);
1067 av_frame_free(&avctx->internal->buffer_frame);
1068 av_packet_free(&avctx->internal->buffer_pkt);
1069 av_packet_free(&avctx->internal->last_pkt_props);
1071 av_packet_free(&avctx->internal->ds.in_pkt);
1073 av_freep(&avctx->internal->pool);
1075 av_freep(&avctx->internal);
1076 avctx->codec = NULL;
1080 void avsubtitle_free(AVSubtitle *sub)
1084 for (i = 0; i < sub->num_rects; i++) {
1085 av_freep(&sub->rects[i]->data[0]);
1086 av_freep(&sub->rects[i]->data[1]);
1087 av_freep(&sub->rects[i]->data[2]);
1088 av_freep(&sub->rects[i]->data[3]);
1089 av_freep(&sub->rects[i]->text);
1090 av_freep(&sub->rects[i]->ass);
1091 av_freep(&sub->rects[i]);
1094 av_freep(&sub->rects);
1096 memset(sub, 0, sizeof(AVSubtitle));
1099 av_cold int avcodec_close(AVCodecContext *avctx)
1106 if (avcodec_is_open(avctx)) {
1107 FramePool *pool = avctx->internal->pool;
1108 if (CONFIG_FRAME_THREAD_ENCODER &&
1109 avctx->internal->frame_thread_encoder && avctx->thread_count > 1) {
1110 ff_frame_thread_encoder_free(avctx);
1112 if (HAVE_THREADS && avctx->internal->thread_ctx)
1113 ff_thread_free(avctx);
1114 if (avctx->codec && avctx->codec->close)
1115 avctx->codec->close(avctx);
1116 avctx->internal->byte_buffer_size = 0;
1117 av_freep(&avctx->internal->byte_buffer);
1118 av_frame_free(&avctx->internal->to_free);
1119 av_frame_free(&avctx->internal->compat_decode_frame);
1120 av_frame_free(&avctx->internal->buffer_frame);
1121 av_packet_free(&avctx->internal->buffer_pkt);
1122 av_packet_free(&avctx->internal->last_pkt_props);
1124 av_packet_free(&avctx->internal->ds.in_pkt);
1126 for (i = 0; i < FF_ARRAY_ELEMS(pool->pools); i++)
1127 av_buffer_pool_uninit(&pool->pools[i]);
1128 av_freep(&avctx->internal->pool);
1130 if (avctx->hwaccel && avctx->hwaccel->uninit)
1131 avctx->hwaccel->uninit(avctx);
1132 av_freep(&avctx->internal->hwaccel_priv_data);
1134 ff_decode_bsfs_uninit(avctx);
1136 av_freep(&avctx->internal);
1139 for (i = 0; i < avctx->nb_coded_side_data; i++)
1140 av_freep(&avctx->coded_side_data[i].data);
1141 av_freep(&avctx->coded_side_data);
1142 avctx->nb_coded_side_data = 0;
1144 av_buffer_unref(&avctx->hw_frames_ctx);
1145 av_buffer_unref(&avctx->hw_device_ctx);
1147 if (avctx->priv_data && avctx->codec && avctx->codec->priv_class)
1148 av_opt_free(avctx->priv_data);
1150 av_freep(&avctx->priv_data);
1151 if (av_codec_is_encoder(avctx->codec)) {
1152 av_freep(&avctx->extradata);
1153 #if FF_API_CODED_FRAME
1154 FF_DISABLE_DEPRECATION_WARNINGS
1155 av_frame_free(&avctx->coded_frame);
1156 FF_ENABLE_DEPRECATION_WARNINGS
1159 avctx->codec = NULL;
1160 avctx->active_thread_type = 0;
1165 static enum AVCodecID remap_deprecated_codec_id(enum AVCodecID id)
1168 //This is for future deprecatec codec ids, its empty since
1169 //last major bump but will fill up again over time, please don't remove it
1170 default : return id;
1174 static AVCodec *find_encdec(enum AVCodecID id, int encoder)
1176 AVCodec *p, *experimental = NULL;
1178 id= remap_deprecated_codec_id(id);
1180 if ((encoder ? av_codec_is_encoder(p) : av_codec_is_decoder(p)) &&
1182 if (p->capabilities & AV_CODEC_CAP_EXPERIMENTAL && !experimental) {
1189 return experimental;
1192 AVCodec *avcodec_find_encoder(enum AVCodecID id)
1194 return find_encdec(id, 1);
1197 AVCodec *avcodec_find_encoder_by_name(const char *name)
1204 if (av_codec_is_encoder(p) && strcmp(name, p->name) == 0)
1211 AVCodec *avcodec_find_decoder(enum AVCodecID id)
1213 return find_encdec(id, 0);
1216 AVCodec *avcodec_find_decoder_by_name(const char *name)
1223 if (av_codec_is_decoder(p) && strcmp(name, p->name) == 0)
1230 const char *avcodec_get_name(enum AVCodecID id)
1232 const AVCodecDescriptor *cd;
1235 if (id == AV_CODEC_ID_NONE)
1237 cd = avcodec_descriptor_get(id);
1240 av_log(NULL, AV_LOG_WARNING, "Codec 0x%x is not in the full list.\n", id);
1241 codec = avcodec_find_decoder(id);
1244 codec = avcodec_find_encoder(id);
1247 return "unknown_codec";
1250 size_t av_get_codec_tag_string(char *buf, size_t buf_size, unsigned int codec_tag)
1252 int i, len, ret = 0;
1254 #define TAG_PRINT(x) \
1255 (((x) >= '0' && (x) <= '9') || \
1256 ((x) >= 'a' && (x) <= 'z') || ((x) >= 'A' && (x) <= 'Z') || \
1257 ((x) == '.' || (x) == ' ' || (x) == '-' || (x) == '_'))
1259 for (i = 0; i < 4; i++) {
1260 len = snprintf(buf, buf_size,
1261 TAG_PRINT(codec_tag & 0xFF) ? "%c" : "[%d]", codec_tag & 0xFF);
1263 buf_size = buf_size > len ? buf_size - len : 0;
1270 void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)
1272 const char *codec_type;
1273 const char *codec_name;
1274 const char *profile = NULL;
1277 AVRational display_aspect_ratio;
1278 const char *separator = enc->dump_separator ? (const char *)enc->dump_separator : ", ";
1280 if (!buf || buf_size <= 0)
1282 codec_type = av_get_media_type_string(enc->codec_type);
1283 codec_name = avcodec_get_name(enc->codec_id);
1284 profile = avcodec_profile_name(enc->codec_id, enc->profile);
1286 snprintf(buf, buf_size, "%s: %s", codec_type ? codec_type : "unknown",
1288 buf[0] ^= 'a' ^ 'A'; /* first letter in uppercase */
1290 if (enc->codec && strcmp(enc->codec->name, codec_name))
1291 snprintf(buf + strlen(buf), buf_size - strlen(buf), " (%s)", enc->codec->name);
1294 snprintf(buf + strlen(buf), buf_size - strlen(buf), " (%s)", profile);
1295 if ( enc->codec_type == AVMEDIA_TYPE_VIDEO
1296 && av_log_get_level() >= AV_LOG_VERBOSE
1298 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1299 ", %d reference frame%s",
1300 enc->refs, enc->refs > 1 ? "s" : "");
1303 snprintf(buf + strlen(buf), buf_size - strlen(buf), " (%s / 0x%04X)",
1304 av_fourcc2str(enc->codec_tag), enc->codec_tag);
1306 switch (enc->codec_type) {
1307 case AVMEDIA_TYPE_VIDEO:
1309 char detail[256] = "(";
1311 av_strlcat(buf, separator, buf_size);
1313 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1314 "%s", enc->pix_fmt == AV_PIX_FMT_NONE ? "none" :
1315 av_get_pix_fmt_name(enc->pix_fmt));
1316 if (enc->bits_per_raw_sample && enc->pix_fmt != AV_PIX_FMT_NONE &&
1317 enc->bits_per_raw_sample < av_pix_fmt_desc_get(enc->pix_fmt)->comp[0].depth)
1318 av_strlcatf(detail, sizeof(detail), "%d bpc, ", enc->bits_per_raw_sample);
1319 if (enc->color_range != AVCOL_RANGE_UNSPECIFIED)
1320 av_strlcatf(detail, sizeof(detail), "%s, ",
1321 av_color_range_name(enc->color_range));
1323 if (enc->colorspace != AVCOL_SPC_UNSPECIFIED ||
1324 enc->color_primaries != AVCOL_PRI_UNSPECIFIED ||
1325 enc->color_trc != AVCOL_TRC_UNSPECIFIED) {
1326 if (enc->colorspace != (int)enc->color_primaries ||
1327 enc->colorspace != (int)enc->color_trc) {
1329 av_strlcatf(detail, sizeof(detail), "%s/%s/%s, ",
1330 av_color_space_name(enc->colorspace),
1331 av_color_primaries_name(enc->color_primaries),
1332 av_color_transfer_name(enc->color_trc));
1334 av_strlcatf(detail, sizeof(detail), "%s, ",
1335 av_get_colorspace_name(enc->colorspace));
1338 if (enc->field_order != AV_FIELD_UNKNOWN) {
1339 const char *field_order = "progressive";
1340 if (enc->field_order == AV_FIELD_TT)
1341 field_order = "top first";
1342 else if (enc->field_order == AV_FIELD_BB)
1343 field_order = "bottom first";
1344 else if (enc->field_order == AV_FIELD_TB)
1345 field_order = "top coded first (swapped)";
1346 else if (enc->field_order == AV_FIELD_BT)
1347 field_order = "bottom coded first (swapped)";
1349 av_strlcatf(detail, sizeof(detail), "%s, ", field_order);
1352 if (av_log_get_level() >= AV_LOG_VERBOSE &&
1353 enc->chroma_sample_location != AVCHROMA_LOC_UNSPECIFIED)
1354 av_strlcatf(detail, sizeof(detail), "%s, ",
1355 av_chroma_location_name(enc->chroma_sample_location));
1357 if (strlen(detail) > 1) {
1358 detail[strlen(detail) - 2] = 0;
1359 av_strlcatf(buf, buf_size, "%s)", detail);
1364 av_strlcat(buf, new_line ? separator : ", ", buf_size);
1366 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1368 enc->width, enc->height);
1370 if (av_log_get_level() >= AV_LOG_VERBOSE &&
1371 (enc->width != enc->coded_width ||
1372 enc->height != enc->coded_height))
1373 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1374 " (%dx%d)", enc->coded_width, enc->coded_height);
1376 if (enc->sample_aspect_ratio.num) {
1377 av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
1378 enc->width * (int64_t)enc->sample_aspect_ratio.num,
1379 enc->height * (int64_t)enc->sample_aspect_ratio.den,
1381 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1382 " [SAR %d:%d DAR %d:%d]",
1383 enc->sample_aspect_ratio.num, enc->sample_aspect_ratio.den,
1384 display_aspect_ratio.num, display_aspect_ratio.den);
1386 if (av_log_get_level() >= AV_LOG_DEBUG) {
1387 int g = av_gcd(enc->time_base.num, enc->time_base.den);
1388 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1390 enc->time_base.num / g, enc->time_base.den / g);
1394 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1395 ", q=%d-%d", enc->qmin, enc->qmax);
1397 if (enc->properties & FF_CODEC_PROPERTY_CLOSED_CAPTIONS)
1398 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1399 ", Closed Captions");
1400 if (enc->properties & FF_CODEC_PROPERTY_LOSSLESS)
1401 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1405 case AVMEDIA_TYPE_AUDIO:
1406 av_strlcat(buf, separator, buf_size);
1408 if (enc->sample_rate) {
1409 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1410 "%d Hz, ", enc->sample_rate);
1412 av_get_channel_layout_string(buf + strlen(buf), buf_size - strlen(buf), enc->channels, enc->channel_layout);
1413 if (enc->sample_fmt != AV_SAMPLE_FMT_NONE) {
1414 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1415 ", %s", av_get_sample_fmt_name(enc->sample_fmt));
1417 if ( enc->bits_per_raw_sample > 0
1418 && enc->bits_per_raw_sample != av_get_bytes_per_sample(enc->sample_fmt) * 8)
1419 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1420 " (%d bit)", enc->bits_per_raw_sample);
1421 if (av_log_get_level() >= AV_LOG_VERBOSE) {
1422 if (enc->initial_padding)
1423 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1424 ", delay %d", enc->initial_padding);
1425 if (enc->trailing_padding)
1426 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1427 ", padding %d", enc->trailing_padding);
1430 case AVMEDIA_TYPE_DATA:
1431 if (av_log_get_level() >= AV_LOG_DEBUG) {
1432 int g = av_gcd(enc->time_base.num, enc->time_base.den);
1434 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1436 enc->time_base.num / g, enc->time_base.den / g);
1439 case AVMEDIA_TYPE_SUBTITLE:
1441 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1442 ", %dx%d", enc->width, enc->height);
1448 if (enc->flags & AV_CODEC_FLAG_PASS1)
1449 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1451 if (enc->flags & AV_CODEC_FLAG_PASS2)
1452 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1455 bitrate = get_bit_rate(enc);
1457 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1458 ", %"PRId64" kb/s", bitrate / 1000);
1459 } else if (enc->rc_max_rate > 0) {
1460 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1461 ", max. %"PRId64" kb/s", enc->rc_max_rate / 1000);
1465 const char *av_get_profile_name(const AVCodec *codec, int profile)
1468 if (profile == FF_PROFILE_UNKNOWN || !codec->profiles)
1471 for (p = codec->profiles; p->profile != FF_PROFILE_UNKNOWN; p++)
1472 if (p->profile == profile)
1478 const char *avcodec_profile_name(enum AVCodecID codec_id, int profile)
1480 const AVCodecDescriptor *desc = avcodec_descriptor_get(codec_id);
1483 if (profile == FF_PROFILE_UNKNOWN || !desc || !desc->profiles)
1486 for (p = desc->profiles; p->profile != FF_PROFILE_UNKNOWN; p++)
1487 if (p->profile == profile)
1493 unsigned avcodec_version(void)
1495 // av_assert0(AV_CODEC_ID_V410==164);
1496 av_assert0(AV_CODEC_ID_PCM_S8_PLANAR==65563);
1497 av_assert0(AV_CODEC_ID_ADPCM_G722==69660);
1498 // av_assert0(AV_CODEC_ID_BMV_AUDIO==86071);
1499 av_assert0(AV_CODEC_ID_SRT==94216);
1500 av_assert0(LIBAVCODEC_VERSION_MICRO >= 100);
1502 return LIBAVCODEC_VERSION_INT;
1505 const char *avcodec_configuration(void)
1507 return FFMPEG_CONFIGURATION;
1510 const char *avcodec_license(void)
1512 #define LICENSE_PREFIX "libavcodec license: "
1513 return LICENSE_PREFIX FFMPEG_LICENSE + sizeof(LICENSE_PREFIX) - 1;
1516 int av_get_exact_bits_per_sample(enum AVCodecID codec_id)
1519 case AV_CODEC_ID_8SVX_EXP:
1520 case AV_CODEC_ID_8SVX_FIB:
1521 case AV_CODEC_ID_ADPCM_CT:
1522 case AV_CODEC_ID_ADPCM_IMA_APC:
1523 case AV_CODEC_ID_ADPCM_IMA_EA_SEAD:
1524 case AV_CODEC_ID_ADPCM_IMA_OKI:
1525 case AV_CODEC_ID_ADPCM_IMA_WS:
1526 case AV_CODEC_ID_ADPCM_G722:
1527 case AV_CODEC_ID_ADPCM_YAMAHA:
1528 case AV_CODEC_ID_ADPCM_AICA:
1530 case AV_CODEC_ID_DSD_LSBF:
1531 case AV_CODEC_ID_DSD_MSBF:
1532 case AV_CODEC_ID_DSD_LSBF_PLANAR:
1533 case AV_CODEC_ID_DSD_MSBF_PLANAR:
1534 case AV_CODEC_ID_PCM_ALAW:
1535 case AV_CODEC_ID_PCM_MULAW:
1536 case AV_CODEC_ID_PCM_S8:
1537 case AV_CODEC_ID_PCM_S8_PLANAR:
1538 case AV_CODEC_ID_PCM_U8:
1539 case AV_CODEC_ID_PCM_ZORK:
1540 case AV_CODEC_ID_SDX2_DPCM:
1542 case AV_CODEC_ID_PCM_S16BE:
1543 case AV_CODEC_ID_PCM_S16BE_PLANAR:
1544 case AV_CODEC_ID_PCM_S16LE:
1545 case AV_CODEC_ID_PCM_S16LE_PLANAR:
1546 case AV_CODEC_ID_PCM_U16BE:
1547 case AV_CODEC_ID_PCM_U16LE:
1549 case AV_CODEC_ID_PCM_S24DAUD:
1550 case AV_CODEC_ID_PCM_S24BE:
1551 case AV_CODEC_ID_PCM_S24LE:
1552 case AV_CODEC_ID_PCM_S24LE_PLANAR:
1553 case AV_CODEC_ID_PCM_U24BE:
1554 case AV_CODEC_ID_PCM_U24LE:
1556 case AV_CODEC_ID_PCM_S32BE:
1557 case AV_CODEC_ID_PCM_S32LE:
1558 case AV_CODEC_ID_PCM_S32LE_PLANAR:
1559 case AV_CODEC_ID_PCM_U32BE:
1560 case AV_CODEC_ID_PCM_U32LE:
1561 case AV_CODEC_ID_PCM_F32BE:
1562 case AV_CODEC_ID_PCM_F32LE:
1563 case AV_CODEC_ID_PCM_F24LE:
1564 case AV_CODEC_ID_PCM_F16LE:
1566 case AV_CODEC_ID_PCM_F64BE:
1567 case AV_CODEC_ID_PCM_F64LE:
1568 case AV_CODEC_ID_PCM_S64BE:
1569 case AV_CODEC_ID_PCM_S64LE:
1576 enum AVCodecID av_get_pcm_codec(enum AVSampleFormat fmt, int be)
1578 static const enum AVCodecID map[AV_SAMPLE_FMT_NB][2] = {
1579 [AV_SAMPLE_FMT_U8 ] = { AV_CODEC_ID_PCM_U8, AV_CODEC_ID_PCM_U8 },
1580 [AV_SAMPLE_FMT_S16 ] = { AV_CODEC_ID_PCM_S16LE, AV_CODEC_ID_PCM_S16BE },
1581 [AV_SAMPLE_FMT_S32 ] = { AV_CODEC_ID_PCM_S32LE, AV_CODEC_ID_PCM_S32BE },
1582 [AV_SAMPLE_FMT_FLT ] = { AV_CODEC_ID_PCM_F32LE, AV_CODEC_ID_PCM_F32BE },
1583 [AV_SAMPLE_FMT_DBL ] = { AV_CODEC_ID_PCM_F64LE, AV_CODEC_ID_PCM_F64BE },
1584 [AV_SAMPLE_FMT_U8P ] = { AV_CODEC_ID_PCM_U8, AV_CODEC_ID_PCM_U8 },
1585 [AV_SAMPLE_FMT_S16P] = { AV_CODEC_ID_PCM_S16LE, AV_CODEC_ID_PCM_S16BE },
1586 [AV_SAMPLE_FMT_S32P] = { AV_CODEC_ID_PCM_S32LE, AV_CODEC_ID_PCM_S32BE },
1587 [AV_SAMPLE_FMT_S64P] = { AV_CODEC_ID_PCM_S64LE, AV_CODEC_ID_PCM_S64BE },
1588 [AV_SAMPLE_FMT_FLTP] = { AV_CODEC_ID_PCM_F32LE, AV_CODEC_ID_PCM_F32BE },
1589 [AV_SAMPLE_FMT_DBLP] = { AV_CODEC_ID_PCM_F64LE, AV_CODEC_ID_PCM_F64BE },
1591 if (fmt < 0 || fmt >= AV_SAMPLE_FMT_NB)
1592 return AV_CODEC_ID_NONE;
1593 if (be < 0 || be > 1)
1595 return map[fmt][be];
1598 int av_get_bits_per_sample(enum AVCodecID codec_id)
1601 case AV_CODEC_ID_ADPCM_SBPRO_2:
1603 case AV_CODEC_ID_ADPCM_SBPRO_3:
1605 case AV_CODEC_ID_ADPCM_SBPRO_4:
1606 case AV_CODEC_ID_ADPCM_IMA_WAV:
1607 case AV_CODEC_ID_ADPCM_IMA_QT:
1608 case AV_CODEC_ID_ADPCM_SWF:
1609 case AV_CODEC_ID_ADPCM_MS:
1612 return av_get_exact_bits_per_sample(codec_id);
1616 static int get_audio_frame_duration(enum AVCodecID id, int sr, int ch, int ba,
1617 uint32_t tag, int bits_per_coded_sample, int64_t bitrate,
1618 uint8_t * extradata, int frame_size, int frame_bytes)
1620 int bps = av_get_exact_bits_per_sample(id);
1621 int framecount = (ba > 0 && frame_bytes / ba > 0) ? frame_bytes / ba : 1;
1623 /* codecs with an exact constant bits per sample */
1624 if (bps > 0 && ch > 0 && frame_bytes > 0 && ch < 32768 && bps < 32768)
1625 return (frame_bytes * 8LL) / (bps * ch);
1626 bps = bits_per_coded_sample;
1628 /* codecs with a fixed packet duration */
1630 case AV_CODEC_ID_ADPCM_ADX: return 32;
1631 case AV_CODEC_ID_ADPCM_IMA_QT: return 64;
1632 case AV_CODEC_ID_ADPCM_EA_XAS: return 128;
1633 case AV_CODEC_ID_AMR_NB:
1634 case AV_CODEC_ID_EVRC:
1635 case AV_CODEC_ID_GSM:
1636 case AV_CODEC_ID_QCELP:
1637 case AV_CODEC_ID_RA_288: return 160;
1638 case AV_CODEC_ID_AMR_WB:
1639 case AV_CODEC_ID_GSM_MS: return 320;
1640 case AV_CODEC_ID_MP1: return 384;
1641 case AV_CODEC_ID_ATRAC1: return 512;
1642 case AV_CODEC_ID_ATRAC3: return 1024 * framecount;
1643 case AV_CODEC_ID_ATRAC3P: return 2048;
1644 case AV_CODEC_ID_MP2:
1645 case AV_CODEC_ID_MUSEPACK7: return 1152;
1646 case AV_CODEC_ID_AC3: return 1536;
1650 /* calc from sample rate */
1651 if (id == AV_CODEC_ID_TTA)
1652 return 256 * sr / 245;
1653 else if (id == AV_CODEC_ID_DST)
1654 return 588 * sr / 44100;
1657 /* calc from sample rate and channels */
1658 if (id == AV_CODEC_ID_BINKAUDIO_DCT)
1659 return (480 << (sr / 22050)) / ch;
1662 if (id == AV_CODEC_ID_MP3)
1663 return sr <= 24000 ? 576 : 1152;
1667 /* calc from block_align */
1668 if (id == AV_CODEC_ID_SIPR) {
1670 case 20: return 160;
1671 case 19: return 144;
1672 case 29: return 288;
1673 case 37: return 480;
1675 } else if (id == AV_CODEC_ID_ILBC) {
1677 case 38: return 160;
1678 case 50: return 240;
1683 if (frame_bytes > 0) {
1684 /* calc from frame_bytes only */
1685 if (id == AV_CODEC_ID_TRUESPEECH)
1686 return 240 * (frame_bytes / 32);
1687 if (id == AV_CODEC_ID_NELLYMOSER)
1688 return 256 * (frame_bytes / 64);
1689 if (id == AV_CODEC_ID_RA_144)
1690 return 160 * (frame_bytes / 20);
1691 if (id == AV_CODEC_ID_G723_1)
1692 return 240 * (frame_bytes / 24);
1695 /* calc from frame_bytes and bits_per_coded_sample */
1696 if (id == AV_CODEC_ID_ADPCM_G726 || id == AV_CODEC_ID_ADPCM_G726LE)
1697 return frame_bytes * 8 / bps;
1700 if (ch > 0 && ch < INT_MAX/16) {
1701 /* calc from frame_bytes and channels */
1703 case AV_CODEC_ID_ADPCM_AFC:
1704 return frame_bytes / (9 * ch) * 16;
1705 case AV_CODEC_ID_ADPCM_PSX:
1706 case AV_CODEC_ID_ADPCM_DTK:
1707 return frame_bytes / (16 * ch) * 28;
1708 case AV_CODEC_ID_ADPCM_4XM:
1709 case AV_CODEC_ID_ADPCM_IMA_DAT4:
1710 case AV_CODEC_ID_ADPCM_IMA_ISS:
1711 return (frame_bytes - 4 * ch) * 2 / ch;
1712 case AV_CODEC_ID_ADPCM_IMA_SMJPEG:
1713 return (frame_bytes - 4) * 2 / ch;
1714 case AV_CODEC_ID_ADPCM_IMA_AMV:
1715 return (frame_bytes - 8) * 2 / ch;
1716 case AV_CODEC_ID_ADPCM_THP:
1717 case AV_CODEC_ID_ADPCM_THP_LE:
1719 return frame_bytes * 14 / (8 * ch);
1721 case AV_CODEC_ID_ADPCM_XA:
1722 return (frame_bytes / 128) * 224 / ch;
1723 case AV_CODEC_ID_INTERPLAY_DPCM:
1724 return (frame_bytes - 6 - ch) / ch;
1725 case AV_CODEC_ID_ROQ_DPCM:
1726 return (frame_bytes - 8) / ch;
1727 case AV_CODEC_ID_XAN_DPCM:
1728 return (frame_bytes - 2 * ch) / ch;
1729 case AV_CODEC_ID_MACE3:
1730 return 3 * frame_bytes / ch;
1731 case AV_CODEC_ID_MACE6:
1732 return 6 * frame_bytes / ch;
1733 case AV_CODEC_ID_PCM_LXF:
1734 return 2 * (frame_bytes / (5 * ch));
1735 case AV_CODEC_ID_IAC:
1736 case AV_CODEC_ID_IMC:
1737 return 4 * frame_bytes / ch;
1741 /* calc from frame_bytes, channels, and codec_tag */
1742 if (id == AV_CODEC_ID_SOL_DPCM) {
1744 return frame_bytes / ch;
1746 return frame_bytes * 2 / ch;
1751 /* calc from frame_bytes, channels, and block_align */
1752 int blocks = frame_bytes / ba;
1754 case AV_CODEC_ID_ADPCM_IMA_WAV:
1755 if (bps < 2 || bps > 5)
1757 return blocks * (1 + (ba - 4 * ch) / (bps * ch) * 8);
1758 case AV_CODEC_ID_ADPCM_IMA_DK3:
1759 return blocks * (((ba - 16) * 2 / 3 * 4) / ch);
1760 case AV_CODEC_ID_ADPCM_IMA_DK4:
1761 return blocks * (1 + (ba - 4 * ch) * 2 / ch);
1762 case AV_CODEC_ID_ADPCM_IMA_RAD:
1763 return blocks * ((ba - 4 * ch) * 2 / ch);
1764 case AV_CODEC_ID_ADPCM_MS:
1765 return blocks * (2 + (ba - 7 * ch) * 2 / ch);
1766 case AV_CODEC_ID_ADPCM_MTAF:
1767 return blocks * (ba - 16) * 2 / ch;
1772 /* calc from frame_bytes, channels, and bits_per_coded_sample */
1774 case AV_CODEC_ID_PCM_DVD:
1775 if(bps<4 || frame_bytes<3)
1777 return 2 * ((frame_bytes - 3) / ((bps * 2 / 8) * ch));
1778 case AV_CODEC_ID_PCM_BLURAY:
1779 if(bps<4 || frame_bytes<4)
1781 return (frame_bytes - 4) / ((FFALIGN(ch, 2) * bps) / 8);
1782 case AV_CODEC_ID_S302M:
1783 return 2 * (frame_bytes / ((bps + 4) / 4)) / ch;
1789 /* Fall back on using frame_size */
1790 if (frame_size > 1 && frame_bytes)
1793 //For WMA we currently have no other means to calculate duration thus we
1794 //do it here by assuming CBR, which is true for all known cases.
1795 if (bitrate > 0 && frame_bytes > 0 && sr > 0 && ba > 1) {
1796 if (id == AV_CODEC_ID_WMAV1 || id == AV_CODEC_ID_WMAV2)
1797 return (frame_bytes * 8LL * sr) / bitrate;
1803 int av_get_audio_frame_duration(AVCodecContext *avctx, int frame_bytes)
1805 return get_audio_frame_duration(avctx->codec_id, avctx->sample_rate,
1806 avctx->channels, avctx->block_align,
1807 avctx->codec_tag, avctx->bits_per_coded_sample,
1808 avctx->bit_rate, avctx->extradata, avctx->frame_size,
1812 int av_get_audio_frame_duration2(AVCodecParameters *par, int frame_bytes)
1814 return get_audio_frame_duration(par->codec_id, par->sample_rate,
1815 par->channels, par->block_align,
1816 par->codec_tag, par->bits_per_coded_sample,
1817 par->bit_rate, par->extradata, par->frame_size,
1822 int ff_thread_init(AVCodecContext *s)
1829 unsigned int av_xiphlacing(unsigned char *s, unsigned int v)
1843 int ff_match_2uint16(const uint16_t(*tab)[2], int size, int a, int b)
1846 for (i = 0; i < size && !(tab[i][0] == a && tab[i][1] == b); i++) ;
1850 const AVCodecHWConfig *avcodec_get_hw_config(const AVCodec *codec, int index)
1853 if (!codec->hw_configs || index < 0)
1855 for (i = 0; i <= index; i++)
1856 if (!codec->hw_configs[i])
1858 return &codec->hw_configs[index]->public;
1861 #if FF_API_USER_VISIBLE_AVHWACCEL
1862 AVHWAccel *av_hwaccel_next(const AVHWAccel *hwaccel)
1867 void av_register_hwaccel(AVHWAccel *hwaccel)
1873 int av_lockmgr_register(int (*cb)(void **mutex, enum AVLockOp op))
1879 unsigned int avpriv_toupper4(unsigned int x)
1881 return av_toupper(x & 0xFF) +
1882 (av_toupper((x >> 8) & 0xFF) << 8) +
1883 (av_toupper((x >> 16) & 0xFF) << 16) +
1884 ((unsigned)av_toupper((x >> 24) & 0xFF) << 24);
1887 int ff_thread_ref_frame(ThreadFrame *dst, ThreadFrame *src)
1891 dst->owner[0] = src->owner[0];
1892 dst->owner[1] = src->owner[1];
1894 ret = av_frame_ref(dst->f, src->f);
1898 av_assert0(!dst->progress);
1900 if (src->progress &&
1901 !(dst->progress = av_buffer_ref(src->progress))) {
1902 ff_thread_release_buffer(dst->owner[0], dst);
1903 return AVERROR(ENOMEM);
1911 enum AVPixelFormat ff_thread_get_format(AVCodecContext *avctx, const enum AVPixelFormat *fmt)
1913 return ff_get_format(avctx, fmt);
1916 int ff_thread_get_buffer(AVCodecContext *avctx, ThreadFrame *f, int flags)
1918 f->owner[0] = f->owner[1] = avctx;
1919 return ff_get_buffer(avctx, f->f, flags);
1922 void ff_thread_release_buffer(AVCodecContext *avctx, ThreadFrame *f)
1925 av_frame_unref(f->f);
1928 void ff_thread_finish_setup(AVCodecContext *avctx)
1932 void ff_thread_report_progress(ThreadFrame *f, int progress, int field)
1936 void ff_thread_await_progress(ThreadFrame *f, int progress, int field)
1940 int ff_thread_can_start_frame(AVCodecContext *avctx)
1945 int ff_alloc_entries(AVCodecContext *avctx, int count)
1950 void ff_reset_entries(AVCodecContext *avctx)
1954 void ff_thread_await_progress2(AVCodecContext *avctx, int field, int thread, int shift)
1958 void ff_thread_report_progress2(AVCodecContext *avctx, int field, int thread, int n)
1964 int avcodec_is_open(AVCodecContext *s)
1966 return !!s->internal;
1969 int avpriv_bprint_to_extradata(AVCodecContext *avctx, struct AVBPrint *buf)
1974 ret = av_bprint_finalize(buf, &str);
1977 if (!av_bprint_is_complete(buf)) {
1979 return AVERROR(ENOMEM);
1982 avctx->extradata = str;
1983 /* Note: the string is NUL terminated (so extradata can be read as a
1984 * string), but the ending character is not accounted in the size (in
1985 * binary formats you are likely not supposed to mux that character). When
1986 * extradata is copied, it is also padded with AV_INPUT_BUFFER_PADDING_SIZE
1988 avctx->extradata_size = buf->len;
1992 const uint8_t *avpriv_find_start_code(const uint8_t *av_restrict p,
1994 uint32_t *av_restrict state)
1998 av_assert0(p <= end);
2002 for (i = 0; i < 3; i++) {
2003 uint32_t tmp = *state << 8;
2004 *state = tmp + *(p++);
2005 if (tmp == 0x100 || p == end)
2010 if (p[-1] > 1 ) p += 3;
2011 else if (p[-2] ) p += 2;
2012 else if (p[-3]|(p[-1]-1)) p++;
2019 p = FFMIN(p, end) - 4;
2020 *state = AV_RB32(p);
2025 AVCPBProperties *av_cpb_properties_alloc(size_t *size)
2027 AVCPBProperties *props = av_mallocz(sizeof(AVCPBProperties));
2032 *size = sizeof(*props);
2034 props->vbv_delay = UINT64_MAX;
2039 AVCPBProperties *ff_add_cpb_side_data(AVCodecContext *avctx)
2041 AVPacketSideData *tmp;
2042 AVCPBProperties *props;
2045 props = av_cpb_properties_alloc(&size);
2049 tmp = av_realloc_array(avctx->coded_side_data, avctx->nb_coded_side_data + 1, sizeof(*tmp));
2055 avctx->coded_side_data = tmp;
2056 avctx->nb_coded_side_data++;
2058 avctx->coded_side_data[avctx->nb_coded_side_data - 1].type = AV_PKT_DATA_CPB_PROPERTIES;
2059 avctx->coded_side_data[avctx->nb_coded_side_data - 1].data = (uint8_t*)props;
2060 avctx->coded_side_data[avctx->nb_coded_side_data - 1].size = size;
2065 static void codec_parameters_reset(AVCodecParameters *par)
2067 av_freep(&par->extradata);
2069 memset(par, 0, sizeof(*par));
2071 par->codec_type = AVMEDIA_TYPE_UNKNOWN;
2072 par->codec_id = AV_CODEC_ID_NONE;
2074 par->field_order = AV_FIELD_UNKNOWN;
2075 par->color_range = AVCOL_RANGE_UNSPECIFIED;
2076 par->color_primaries = AVCOL_PRI_UNSPECIFIED;
2077 par->color_trc = AVCOL_TRC_UNSPECIFIED;
2078 par->color_space = AVCOL_SPC_UNSPECIFIED;
2079 par->chroma_location = AVCHROMA_LOC_UNSPECIFIED;
2080 par->sample_aspect_ratio = (AVRational){ 0, 1 };
2081 par->profile = FF_PROFILE_UNKNOWN;
2082 par->level = FF_LEVEL_UNKNOWN;
2085 AVCodecParameters *avcodec_parameters_alloc(void)
2087 AVCodecParameters *par = av_mallocz(sizeof(*par));
2091 codec_parameters_reset(par);
2095 void avcodec_parameters_free(AVCodecParameters **ppar)
2097 AVCodecParameters *par = *ppar;
2101 codec_parameters_reset(par);
2106 int avcodec_parameters_copy(AVCodecParameters *dst, const AVCodecParameters *src)
2108 codec_parameters_reset(dst);
2109 memcpy(dst, src, sizeof(*dst));
2111 dst->extradata = NULL;
2112 dst->extradata_size = 0;
2113 if (src->extradata) {
2114 dst->extradata = av_mallocz(src->extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);
2115 if (!dst->extradata)
2116 return AVERROR(ENOMEM);
2117 memcpy(dst->extradata, src->extradata, src->extradata_size);
2118 dst->extradata_size = src->extradata_size;
2124 int avcodec_parameters_from_context(AVCodecParameters *par,
2125 const AVCodecContext *codec)
2127 codec_parameters_reset(par);
2129 par->codec_type = codec->codec_type;
2130 par->codec_id = codec->codec_id;
2131 par->codec_tag = codec->codec_tag;
2133 par->bit_rate = codec->bit_rate;
2134 par->bits_per_coded_sample = codec->bits_per_coded_sample;
2135 par->bits_per_raw_sample = codec->bits_per_raw_sample;
2136 par->profile = codec->profile;
2137 par->level = codec->level;
2139 switch (par->codec_type) {
2140 case AVMEDIA_TYPE_VIDEO:
2141 par->format = codec->pix_fmt;
2142 par->width = codec->width;
2143 par->height = codec->height;
2144 par->field_order = codec->field_order;
2145 par->color_range = codec->color_range;
2146 par->color_primaries = codec->color_primaries;
2147 par->color_trc = codec->color_trc;
2148 par->color_space = codec->colorspace;
2149 par->chroma_location = codec->chroma_sample_location;
2150 par->sample_aspect_ratio = codec->sample_aspect_ratio;
2151 par->video_delay = codec->has_b_frames;
2153 case AVMEDIA_TYPE_AUDIO:
2154 par->format = codec->sample_fmt;
2155 par->channel_layout = codec->channel_layout;
2156 par->channels = codec->channels;
2157 par->sample_rate = codec->sample_rate;
2158 par->block_align = codec->block_align;
2159 par->frame_size = codec->frame_size;
2160 par->initial_padding = codec->initial_padding;
2161 par->trailing_padding = codec->trailing_padding;
2162 par->seek_preroll = codec->seek_preroll;
2164 case AVMEDIA_TYPE_SUBTITLE:
2165 par->width = codec->width;
2166 par->height = codec->height;
2170 if (codec->extradata) {
2171 par->extradata = av_mallocz(codec->extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);
2172 if (!par->extradata)
2173 return AVERROR(ENOMEM);
2174 memcpy(par->extradata, codec->extradata, codec->extradata_size);
2175 par->extradata_size = codec->extradata_size;
2181 int avcodec_parameters_to_context(AVCodecContext *codec,
2182 const AVCodecParameters *par)
2184 codec->codec_type = par->codec_type;
2185 codec->codec_id = par->codec_id;
2186 codec->codec_tag = par->codec_tag;
2188 codec->bit_rate = par->bit_rate;
2189 codec->bits_per_coded_sample = par->bits_per_coded_sample;
2190 codec->bits_per_raw_sample = par->bits_per_raw_sample;
2191 codec->profile = par->profile;
2192 codec->level = par->level;
2194 switch (par->codec_type) {
2195 case AVMEDIA_TYPE_VIDEO:
2196 codec->pix_fmt = par->format;
2197 codec->width = par->width;
2198 codec->height = par->height;
2199 codec->field_order = par->field_order;
2200 codec->color_range = par->color_range;
2201 codec->color_primaries = par->color_primaries;
2202 codec->color_trc = par->color_trc;
2203 codec->colorspace = par->color_space;
2204 codec->chroma_sample_location = par->chroma_location;
2205 codec->sample_aspect_ratio = par->sample_aspect_ratio;
2206 codec->has_b_frames = par->video_delay;
2208 case AVMEDIA_TYPE_AUDIO:
2209 codec->sample_fmt = par->format;
2210 codec->channel_layout = par->channel_layout;
2211 codec->channels = par->channels;
2212 codec->sample_rate = par->sample_rate;
2213 codec->block_align = par->block_align;
2214 codec->frame_size = par->frame_size;
2216 codec->initial_padding = par->initial_padding;
2217 codec->trailing_padding = par->trailing_padding;
2218 codec->seek_preroll = par->seek_preroll;
2220 case AVMEDIA_TYPE_SUBTITLE:
2221 codec->width = par->width;
2222 codec->height = par->height;
2226 if (par->extradata) {
2227 av_freep(&codec->extradata);
2228 codec->extradata = av_mallocz(par->extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);
2229 if (!codec->extradata)
2230 return AVERROR(ENOMEM);
2231 memcpy(codec->extradata, par->extradata, par->extradata_size);
2232 codec->extradata_size = par->extradata_size;
2238 int ff_alloc_a53_sei(const AVFrame *frame, size_t prefix_len,
2239 void **data, size_t *sei_size)
2241 AVFrameSideData *side_data = NULL;
2245 side_data = av_frame_get_side_data(frame, AV_FRAME_DATA_A53_CC);
2252 *sei_size = side_data->size + 11;
2253 *data = av_mallocz(*sei_size + prefix_len);
2255 return AVERROR(ENOMEM);
2256 sei_data = (uint8_t*)*data + prefix_len;
2264 * 'GA94' is standard in North America for ATSC, but hard coding
2265 * this style may not be the right thing to do -- other formats
2266 * do exist. This information is not available in the side_data
2267 * so we are going with this right now.
2269 AV_WL32(sei_data + 3, MKTAG('G', 'A', '9', '4'));
2271 sei_data[8] = ((side_data->size/3) & 0x1f) | 0x40;
2274 memcpy(sei_data + 10, side_data->data, side_data->size);
2276 sei_data[side_data->size+10] = 255;
2281 int64_t ff_guess_coded_bitrate(AVCodecContext *avctx)
2283 AVRational framerate = avctx->framerate;
2284 int bits_per_coded_sample = avctx->bits_per_coded_sample;
2287 if (!(framerate.num && framerate.den))
2288 framerate = av_inv_q(avctx->time_base);
2289 if (!(framerate.num && framerate.den))
2292 if (!bits_per_coded_sample) {
2293 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(avctx->pix_fmt);
2294 bits_per_coded_sample = av_get_bits_per_pixel(desc);
2296 bitrate = (int64_t)bits_per_coded_sample * avctx->width * avctx->height *
2297 framerate.num / framerate.den;