1 /*
2 * utils for libavcodec
3 * Copyright (c) 2001 Fabrice Bellard
4 * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
5 *
6 * This file is part of FFmpeg.
7 *
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.
12 *
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.
17 *
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
21 */
22
23 /**
24 * @file
25 * utils.
26 */
27
28 #include "config.h"
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"
45 #include "avcodec.h"
46 #include "decode.h"
47 #include "hwaccel.h"
48 #include "libavutil/opt.h"
49 #include "mpegvideo.h"
50 #include "thread.h"
51 #include "frame_thread_encoder.h"
52 #include "internal.h"
53 #include "raw.h"
54 #include "bytestream.h"
55 #include "version.h"
56 #include <stdlib.h>
57 #include <stdarg.h>
58 #include <stdatomic.h>
59 #include <limits.h>
60 #include <float.h>
61 #if CONFIG_ICONV
62 # include <iconv.h>
63 #endif
64
65 #include "libavutil/ffversion.h"
66 const char av_codec_ffversion[] = "FFmpeg version " FFMPEG_VERSION;
67
68 static AVMutex codec_mutex = AV_MUTEX_INITIALIZER;
69
av_fast_padded_malloc(void * ptr,unsigned int * size,size_t min_size)70 void av_fast_padded_malloc(void *ptr, unsigned int *size, size_t min_size)
71 {
72 uint8_t **p = ptr;
73 if (min_size > SIZE_MAX - AV_INPUT_BUFFER_PADDING_SIZE) {
74 av_freep(p);
75 *size = 0;
76 return;
77 }
78 if (!ff_fast_malloc(p, size, min_size + AV_INPUT_BUFFER_PADDING_SIZE, 1))
79 memset(*p + min_size, 0, AV_INPUT_BUFFER_PADDING_SIZE);
80 }
81
av_fast_padded_mallocz(void * ptr,unsigned int * size,size_t min_size)82 void av_fast_padded_mallocz(void *ptr, unsigned int *size, size_t min_size)
83 {
84 uint8_t **p = ptr;
85 if (min_size > SIZE_MAX - AV_INPUT_BUFFER_PADDING_SIZE) {
86 av_freep(p);
87 *size = 0;
88 return;
89 }
90 if (!ff_fast_malloc(p, size, min_size + AV_INPUT_BUFFER_PADDING_SIZE, 1))
91 memset(*p, 0, min_size + AV_INPUT_BUFFER_PADDING_SIZE);
92 }
93
av_codec_is_encoder(const AVCodec * codec)94 int av_codec_is_encoder(const AVCodec *codec)
95 {
96 return codec && (codec->encode_sub || codec->encode2 ||codec->send_frame);
97 }
98
av_codec_is_decoder(const AVCodec * codec)99 int av_codec_is_decoder(const AVCodec *codec)
100 {
101 return codec && (codec->decode || codec->receive_frame);
102 }
103
ff_set_dimensions(AVCodecContext * s,int width,int height)104 int ff_set_dimensions(AVCodecContext *s, int width, int height)
105 {
106 int ret = av_image_check_size2(width, height, s->max_pixels, AV_PIX_FMT_NONE, 0, s);
107
108 if (ret < 0)
109 width = height = 0;
110
111 s->coded_width = width;
112 s->coded_height = height;
113 s->width = AV_CEIL_RSHIFT(width, s->lowres);
114 s->height = AV_CEIL_RSHIFT(height, s->lowres);
115
116 return ret;
117 }
118
ff_set_sar(AVCodecContext * avctx,AVRational sar)119 int ff_set_sar(AVCodecContext *avctx, AVRational sar)
120 {
121 int ret = av_image_check_sar(avctx->width, avctx->height, sar);
122
123 if (ret < 0) {
124 av_log(avctx, AV_LOG_WARNING, "ignoring invalid SAR: %d/%d\n",
125 sar.num, sar.den);
126 avctx->sample_aspect_ratio = (AVRational){ 0, 1 };
127 return ret;
128 } else {
129 avctx->sample_aspect_ratio = sar;
130 }
131 return 0;
132 }
133
ff_side_data_update_matrix_encoding(AVFrame * frame,enum AVMatrixEncoding matrix_encoding)134 int ff_side_data_update_matrix_encoding(AVFrame *frame,
135 enum AVMatrixEncoding matrix_encoding)
136 {
137 AVFrameSideData *side_data;
138 enum AVMatrixEncoding *data;
139
140 side_data = av_frame_get_side_data(frame, AV_FRAME_DATA_MATRIXENCODING);
141 if (!side_data)
142 side_data = av_frame_new_side_data(frame, AV_FRAME_DATA_MATRIXENCODING,
143 sizeof(enum AVMatrixEncoding));
144
145 if (!side_data)
146 return AVERROR(ENOMEM);
147
148 data = (enum AVMatrixEncoding*)side_data->data;
149 *data = matrix_encoding;
150
151 return 0;
152 }
153
avcodec_align_dimensions2(AVCodecContext * s,int * width,int * height,int linesize_align[AV_NUM_DATA_POINTERS])154 void avcodec_align_dimensions2(AVCodecContext *s, int *width, int *height,
155 int linesize_align[AV_NUM_DATA_POINTERS])
156 {
157 int i;
158 int w_align = 1;
159 int h_align = 1;
160 AVPixFmtDescriptor const *desc = av_pix_fmt_desc_get(s->pix_fmt);
161
162 if (desc) {
163 w_align = 1 << desc->log2_chroma_w;
164 h_align = 1 << desc->log2_chroma_h;
165 }
166
167 switch (s->pix_fmt) {
168 case AV_PIX_FMT_YUV420P:
169 case AV_PIX_FMT_YUYV422:
170 case AV_PIX_FMT_YVYU422:
171 case AV_PIX_FMT_UYVY422:
172 case AV_PIX_FMT_YUV422P:
173 case AV_PIX_FMT_YUV440P:
174 case AV_PIX_FMT_YUV444P:
175 case AV_PIX_FMT_GBRP:
176 case AV_PIX_FMT_GBRAP:
177 case AV_PIX_FMT_GRAY8:
178 case AV_PIX_FMT_GRAY16BE:
179 case AV_PIX_FMT_GRAY16LE:
180 case AV_PIX_FMT_YUVJ420P:
181 case AV_PIX_FMT_YUVJ422P:
182 case AV_PIX_FMT_YUVJ440P:
183 case AV_PIX_FMT_YUVJ444P:
184 case AV_PIX_FMT_YUVA420P:
185 case AV_PIX_FMT_YUVA422P:
186 case AV_PIX_FMT_YUVA444P:
187 case AV_PIX_FMT_YUV420P9LE:
188 case AV_PIX_FMT_YUV420P9BE:
189 case AV_PIX_FMT_YUV420P10LE:
190 case AV_PIX_FMT_YUV420P10BE:
191 case AV_PIX_FMT_YUV420P12LE:
192 case AV_PIX_FMT_YUV420P12BE:
193 case AV_PIX_FMT_YUV420P14LE:
194 case AV_PIX_FMT_YUV420P14BE:
195 case AV_PIX_FMT_YUV420P16LE:
196 case AV_PIX_FMT_YUV420P16BE:
197 case AV_PIX_FMT_YUVA420P9LE:
198 case AV_PIX_FMT_YUVA420P9BE:
199 case AV_PIX_FMT_YUVA420P10LE:
200 case AV_PIX_FMT_YUVA420P10BE:
201 case AV_PIX_FMT_YUVA420P16LE:
202 case AV_PIX_FMT_YUVA420P16BE:
203 case AV_PIX_FMT_YUV422P9LE:
204 case AV_PIX_FMT_YUV422P9BE:
205 case AV_PIX_FMT_YUV422P10LE:
206 case AV_PIX_FMT_YUV422P10BE:
207 case AV_PIX_FMT_YUV422P12LE:
208 case AV_PIX_FMT_YUV422P12BE:
209 case AV_PIX_FMT_YUV422P14LE:
210 case AV_PIX_FMT_YUV422P14BE:
211 case AV_PIX_FMT_YUV422P16LE:
212 case AV_PIX_FMT_YUV422P16BE:
213 case AV_PIX_FMT_YUVA422P9LE:
214 case AV_PIX_FMT_YUVA422P9BE:
215 case AV_PIX_FMT_YUVA422P10LE:
216 case AV_PIX_FMT_YUVA422P10BE:
217 case AV_PIX_FMT_YUVA422P12LE:
218 case AV_PIX_FMT_YUVA422P12BE:
219 case AV_PIX_FMT_YUVA422P16LE:
220 case AV_PIX_FMT_YUVA422P16BE:
221 case AV_PIX_FMT_YUV440P10LE:
222 case AV_PIX_FMT_YUV440P10BE:
223 case AV_PIX_FMT_YUV440P12LE:
224 case AV_PIX_FMT_YUV440P12BE:
225 case AV_PIX_FMT_YUV444P9LE:
226 case AV_PIX_FMT_YUV444P9BE:
227 case AV_PIX_FMT_YUV444P10LE:
228 case AV_PIX_FMT_YUV444P10BE:
229 case AV_PIX_FMT_YUV444P12LE:
230 case AV_PIX_FMT_YUV444P12BE:
231 case AV_PIX_FMT_YUV444P14LE:
232 case AV_PIX_FMT_YUV444P14BE:
233 case AV_PIX_FMT_YUV444P16LE:
234 case AV_PIX_FMT_YUV444P16BE:
235 case AV_PIX_FMT_YUVA444P9LE:
236 case AV_PIX_FMT_YUVA444P9BE:
237 case AV_PIX_FMT_YUVA444P10LE:
238 case AV_PIX_FMT_YUVA444P10BE:
239 case AV_PIX_FMT_YUVA444P12LE:
240 case AV_PIX_FMT_YUVA444P12BE:
241 case AV_PIX_FMT_YUVA444P16LE:
242 case AV_PIX_FMT_YUVA444P16BE:
243 case AV_PIX_FMT_GBRP9LE:
244 case AV_PIX_FMT_GBRP9BE:
245 case AV_PIX_FMT_GBRP10LE:
246 case AV_PIX_FMT_GBRP10BE:
247 case AV_PIX_FMT_GBRP12LE:
248 case AV_PIX_FMT_GBRP12BE:
249 case AV_PIX_FMT_GBRP14LE:
250 case AV_PIX_FMT_GBRP14BE:
251 case AV_PIX_FMT_GBRP16LE:
252 case AV_PIX_FMT_GBRP16BE:
253 case AV_PIX_FMT_GBRAP12LE:
254 case AV_PIX_FMT_GBRAP12BE:
255 case AV_PIX_FMT_GBRAP16LE:
256 case AV_PIX_FMT_GBRAP16BE:
257 w_align = 16; //FIXME assume 16 pixel per macroblock
258 h_align = 16 * 2; // interlaced needs 2 macroblocks height
259 break;
260 case AV_PIX_FMT_YUV411P:
261 case AV_PIX_FMT_YUVJ411P:
262 case AV_PIX_FMT_UYYVYY411:
263 w_align = 32;
264 h_align = 16 * 2;
265 break;
266 case AV_PIX_FMT_YUV410P:
267 if (s->codec_id == AV_CODEC_ID_SVQ1) {
268 w_align = 64;
269 h_align = 64;
270 }
271 break;
272 case AV_PIX_FMT_RGB555:
273 if (s->codec_id == AV_CODEC_ID_RPZA) {
274 w_align = 4;
275 h_align = 4;
276 }
277 if (s->codec_id == AV_CODEC_ID_INTERPLAY_VIDEO) {
278 w_align = 8;
279 h_align = 8;
280 }
281 break;
282 case AV_PIX_FMT_PAL8:
283 case AV_PIX_FMT_BGR8:
284 case AV_PIX_FMT_RGB8:
285 if (s->codec_id == AV_CODEC_ID_SMC ||
286 s->codec_id == AV_CODEC_ID_CINEPAK) {
287 w_align = 4;
288 h_align = 4;
289 }
290 if (s->codec_id == AV_CODEC_ID_JV ||
291 s->codec_id == AV_CODEC_ID_INTERPLAY_VIDEO) {
292 w_align = 8;
293 h_align = 8;
294 }
295 break;
296 case AV_PIX_FMT_BGR24:
297 if ((s->codec_id == AV_CODEC_ID_MSZH) ||
298 (s->codec_id == AV_CODEC_ID_ZLIB)) {
299 w_align = 4;
300 h_align = 4;
301 }
302 break;
303 case AV_PIX_FMT_RGB24:
304 if (s->codec_id == AV_CODEC_ID_CINEPAK) {
305 w_align = 4;
306 h_align = 4;
307 }
308 break;
309 default:
310 break;
311 }
312
313 if (s->codec_id == AV_CODEC_ID_IFF_ILBM) {
314 w_align = FFMAX(w_align, 8);
315 }
316
317 *width = FFALIGN(*width, w_align);
318 *height = FFALIGN(*height, h_align);
319 if (s->codec_id == AV_CODEC_ID_H264 || s->lowres ||
320 s->codec_id == AV_CODEC_ID_VP5 || s->codec_id == AV_CODEC_ID_VP6 ||
321 s->codec_id == AV_CODEC_ID_VP6F || s->codec_id == AV_CODEC_ID_VP6A
322 ) {
323 // some of the optimized chroma MC reads one line too much
324 // which is also done in mpeg decoders with lowres > 0
325 *height += 2;
326
327 // H.264 uses edge emulation for out of frame motion vectors, for this
328 // it requires a temporary area large enough to hold a 21x21 block,
329 // increasing witdth ensure that the temporary area is large enough,
330 // the next rounded up width is 32
331 *width = FFMAX(*width, 32);
332 }
333
334 for (i = 0; i < 4; i++)
335 linesize_align[i] = STRIDE_ALIGN;
336 }
337
avcodec_align_dimensions(AVCodecContext * s,int * width,int * height)338 void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height)
339 {
340 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(s->pix_fmt);
341 int chroma_shift = desc->log2_chroma_w;
342 int linesize_align[AV_NUM_DATA_POINTERS];
343 int align;
344
345 avcodec_align_dimensions2(s, width, height, linesize_align);
346 align = FFMAX(linesize_align[0], linesize_align[3]);
347 linesize_align[1] <<= chroma_shift;
348 linesize_align[2] <<= chroma_shift;
349 align = FFMAX3(align, linesize_align[1], linesize_align[2]);
350 *width = FFALIGN(*width, align);
351 }
352
avcodec_enum_to_chroma_pos(int * xpos,int * ypos,enum AVChromaLocation pos)353 int avcodec_enum_to_chroma_pos(int *xpos, int *ypos, enum AVChromaLocation pos)
354 {
355 if (pos <= AVCHROMA_LOC_UNSPECIFIED || pos >= AVCHROMA_LOC_NB)
356 return AVERROR(EINVAL);
357 pos--;
358
359 *xpos = (pos&1) * 128;
360 *ypos = ((pos>>1)^(pos<4)) * 128;
361
362 return 0;
363 }
364
avcodec_chroma_pos_to_enum(int xpos,int ypos)365 enum AVChromaLocation avcodec_chroma_pos_to_enum(int xpos, int ypos)
366 {
367 int pos, xout, yout;
368
369 for (pos = AVCHROMA_LOC_UNSPECIFIED + 1; pos < AVCHROMA_LOC_NB; pos++) {
370 if (avcodec_enum_to_chroma_pos(&xout, &yout, pos) == 0 && xout == xpos && yout == ypos)
371 return pos;
372 }
373 return AVCHROMA_LOC_UNSPECIFIED;
374 }
375
avcodec_fill_audio_frame(AVFrame * frame,int nb_channels,enum AVSampleFormat sample_fmt,const uint8_t * buf,int buf_size,int align)376 int avcodec_fill_audio_frame(AVFrame *frame, int nb_channels,
377 enum AVSampleFormat sample_fmt, const uint8_t *buf,
378 int buf_size, int align)
379 {
380 int ch, planar, needed_size, ret = 0;
381
382 needed_size = av_samples_get_buffer_size(NULL, nb_channels,
383 frame->nb_samples, sample_fmt,
384 align);
385 if (buf_size < needed_size)
386 return AVERROR(EINVAL);
387
388 planar = av_sample_fmt_is_planar(sample_fmt);
389 if (planar && nb_channels > AV_NUM_DATA_POINTERS) {
390 if (!(frame->extended_data = av_mallocz_array(nb_channels,
391 sizeof(*frame->extended_data))))
392 return AVERROR(ENOMEM);
393 } else {
394 frame->extended_data = frame->data;
395 }
396
397 if ((ret = av_samples_fill_arrays(frame->extended_data, &frame->linesize[0],
398 (uint8_t *)(intptr_t)buf, nb_channels, frame->nb_samples,
399 sample_fmt, align)) < 0) {
400 if (frame->extended_data != frame->data)
401 av_freep(&frame->extended_data);
402 return ret;
403 }
404 if (frame->extended_data != frame->data) {
405 for (ch = 0; ch < AV_NUM_DATA_POINTERS; ch++)
406 frame->data[ch] = frame->extended_data[ch];
407 }
408
409 return ret;
410 }
411
ff_color_frame(AVFrame * frame,const int c[4])412 void ff_color_frame(AVFrame *frame, const int c[4])
413 {
414 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(frame->format);
415 int p, y;
416
417 av_assert0(desc->flags & AV_PIX_FMT_FLAG_PLANAR);
418
419 for (p = 0; p<desc->nb_components; p++) {
420 uint8_t *dst = frame->data[p];
421 int is_chroma = p == 1 || p == 2;
422 int bytes = is_chroma ? AV_CEIL_RSHIFT(frame->width, desc->log2_chroma_w) : frame->width;
423 int height = is_chroma ? AV_CEIL_RSHIFT(frame->height, desc->log2_chroma_h) : frame->height;
424 if (desc->comp[0].depth >= 9) {
425 ((uint16_t*)dst)[0] = c[p];
426 av_memcpy_backptr(dst + 2, 2, bytes - 2);
427 dst += frame->linesize[p];
428 for (y = 1; y < height; y++) {
429 memcpy(dst, frame->data[p], 2*bytes);
430 dst += frame->linesize[p];
431 }
432 } else {
433 for (y = 0; y < height; y++) {
434 memset(dst, c[p], bytes);
435 dst += frame->linesize[p];
436 }
437 }
438 }
439 }
440
avcodec_default_execute(AVCodecContext * c,int (* func)(AVCodecContext * c2,void * arg2),void * arg,int * ret,int count,int size)441 int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2), void *arg, int *ret, int count, int size)
442 {
443 int i;
444
445 for (i = 0; i < count; i++) {
446 int r = func(c, (char *)arg + i * size);
447 if (ret)
448 ret[i] = r;
449 }
450 emms_c();
451 return 0;
452 }
453
avcodec_default_execute2(AVCodecContext * c,int (* func)(AVCodecContext * c2,void * arg2,int jobnr,int threadnr),void * arg,int * ret,int count)454 int avcodec_default_execute2(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2, int jobnr, int threadnr), void *arg, int *ret, int count)
455 {
456 int i;
457
458 for (i = 0; i < count; i++) {
459 int r = func(c, arg, i, 0);
460 if (ret)
461 ret[i] = r;
462 }
463 emms_c();
464 return 0;
465 }
466
avpriv_find_pix_fmt(const PixelFormatTag * tags,unsigned int fourcc)467 enum AVPixelFormat avpriv_find_pix_fmt(const PixelFormatTag *tags,
468 unsigned int fourcc)
469 {
470 while (tags->pix_fmt >= 0) {
471 if (tags->fourcc == fourcc)
472 return tags->pix_fmt;
473 tags++;
474 }
475 return AV_PIX_FMT_NONE;
476 }
477
478 #if FF_API_CODEC_GET_SET
MAKE_ACCESSORS(AVCodecContext,codec,AVRational,pkt_timebase)479 MAKE_ACCESSORS(AVCodecContext, codec, AVRational, pkt_timebase)
480 MAKE_ACCESSORS(AVCodecContext, codec, const AVCodecDescriptor *, codec_descriptor)
481 MAKE_ACCESSORS(AVCodecContext, codec, int, lowres)
482 MAKE_ACCESSORS(AVCodecContext, codec, int, seek_preroll)
483 MAKE_ACCESSORS(AVCodecContext, codec, uint16_t*, chroma_intra_matrix)
484
485 unsigned av_codec_get_codec_properties(const AVCodecContext *codec)
486 {
487 return codec->properties;
488 }
489
av_codec_get_max_lowres(const AVCodec * codec)490 int av_codec_get_max_lowres(const AVCodec *codec)
491 {
492 return codec->max_lowres;
493 }
494 #endif
495
avpriv_codec_get_cap_skip_frame_fill_param(const AVCodec * codec)496 int avpriv_codec_get_cap_skip_frame_fill_param(const AVCodec *codec){
497 return !!(codec->caps_internal & FF_CODEC_CAP_SKIP_FRAME_FILL_PARAM);
498 }
499
get_bit_rate(AVCodecContext * ctx)500 static int64_t get_bit_rate(AVCodecContext *ctx)
501 {
502 int64_t bit_rate;
503 int bits_per_sample;
504
505 switch (ctx->codec_type) {
506 case AVMEDIA_TYPE_VIDEO:
507 case AVMEDIA_TYPE_DATA:
508 case AVMEDIA_TYPE_SUBTITLE:
509 case AVMEDIA_TYPE_ATTACHMENT:
510 bit_rate = ctx->bit_rate;
511 break;
512 case AVMEDIA_TYPE_AUDIO:
513 bits_per_sample = av_get_bits_per_sample(ctx->codec_id);
514 bit_rate = bits_per_sample ? ctx->sample_rate * (int64_t)ctx->channels * bits_per_sample : ctx->bit_rate;
515 break;
516 default:
517 bit_rate = 0;
518 break;
519 }
520 return bit_rate;
521 }
522
523
ff_lock_avcodec(AVCodecContext * log_ctx,const AVCodec * codec)524 static void ff_lock_avcodec(AVCodecContext *log_ctx, const AVCodec *codec)
525 {
526 if (!(codec->caps_internal & FF_CODEC_CAP_INIT_THREADSAFE) && codec->init)
527 ff_mutex_lock(&codec_mutex);
528 }
529
ff_unlock_avcodec(const AVCodec * codec)530 static void ff_unlock_avcodec(const AVCodec *codec)
531 {
532 if (!(codec->caps_internal & FF_CODEC_CAP_INIT_THREADSAFE) && codec->init)
533 ff_mutex_unlock(&codec_mutex);
534 }
535
ff_codec_open2_recursive(AVCodecContext * avctx,const AVCodec * codec,AVDictionary ** options)536 int attribute_align_arg ff_codec_open2_recursive(AVCodecContext *avctx, const AVCodec *codec, AVDictionary **options)
537 {
538 int ret = 0;
539
540 ff_unlock_avcodec(codec);
541
542 ret = avcodec_open2(avctx, codec, options);
543
544 ff_lock_avcodec(avctx, codec);
545 return ret;
546 }
547
avcodec_open2(AVCodecContext * avctx,const AVCodec * codec,AVDictionary ** options)548 int attribute_align_arg avcodec_open2(AVCodecContext *avctx, const AVCodec *codec, AVDictionary **options)
549 {
550 int ret = 0;
551 int codec_init_ok = 0;
552 AVDictionary *tmp = NULL;
553 const AVPixFmtDescriptor *pixdesc;
554
555 if (avcodec_is_open(avctx))
556 return 0;
557
558 if ((!codec && !avctx->codec)) {
559 av_log(avctx, AV_LOG_ERROR, "No codec provided to avcodec_open2()\n");
560 return AVERROR(EINVAL);
561 }
562 if ((codec && avctx->codec && codec != avctx->codec)) {
563 av_log(avctx, AV_LOG_ERROR, "This AVCodecContext was allocated for %s, "
564 "but %s passed to avcodec_open2()\n", avctx->codec->name, codec->name);
565 return AVERROR(EINVAL);
566 }
567 if (!codec)
568 codec = avctx->codec;
569
570 if (avctx->extradata_size < 0 || avctx->extradata_size >= FF_MAX_EXTRADATA_SIZE)
571 return AVERROR(EINVAL);
572
573 if (options)
574 av_dict_copy(&tmp, *options, 0);
575
576 ff_lock_avcodec(avctx, codec);
577
578 avctx->internal = av_mallocz(sizeof(*avctx->internal));
579 if (!avctx->internal) {
580 ret = AVERROR(ENOMEM);
581 goto end;
582 }
583
584 avctx->internal->pool = av_mallocz(sizeof(*avctx->internal->pool));
585 if (!avctx->internal->pool) {
586 ret = AVERROR(ENOMEM);
587 goto free_and_end;
588 }
589
590 avctx->internal->to_free = av_frame_alloc();
591 if (!avctx->internal->to_free) {
592 ret = AVERROR(ENOMEM);
593 goto free_and_end;
594 }
595
596 avctx->internal->compat_decode_frame = av_frame_alloc();
597 if (!avctx->internal->compat_decode_frame) {
598 ret = AVERROR(ENOMEM);
599 goto free_and_end;
600 }
601
602 avctx->internal->buffer_frame = av_frame_alloc();
603 if (!avctx->internal->buffer_frame) {
604 ret = AVERROR(ENOMEM);
605 goto free_and_end;
606 }
607
608 avctx->internal->buffer_pkt = av_packet_alloc();
609 if (!avctx->internal->buffer_pkt) {
610 ret = AVERROR(ENOMEM);
611 goto free_and_end;
612 }
613
614 avctx->internal->ds.in_pkt = av_packet_alloc();
615 if (!avctx->internal->ds.in_pkt) {
616 ret = AVERROR(ENOMEM);
617 goto free_and_end;
618 }
619
620 avctx->internal->last_pkt_props = av_packet_alloc();
621 if (!avctx->internal->last_pkt_props) {
622 ret = AVERROR(ENOMEM);
623 goto free_and_end;
624 }
625
626 avctx->internal->skip_samples_multiplier = 1;
627
628 if (codec->priv_data_size > 0) {
629 if (!avctx->priv_data) {
630 avctx->priv_data = av_mallocz(codec->priv_data_size);
631 if (!avctx->priv_data) {
632 ret = AVERROR(ENOMEM);
633 goto end;
634 }
635 if (codec->priv_class) {
636 *(const AVClass **)avctx->priv_data = codec->priv_class;
637 av_opt_set_defaults(avctx->priv_data);
638 }
639 }
640 if (codec->priv_class && (ret = av_opt_set_dict(avctx->priv_data, &tmp)) < 0)
641 goto free_and_end;
642 } else {
643 avctx->priv_data = NULL;
644 }
645 if ((ret = av_opt_set_dict(avctx, &tmp)) < 0)
646 goto free_and_end;
647
648 if (avctx->codec_whitelist && av_match_list(codec->name, avctx->codec_whitelist, ',') <= 0) {
649 av_log(avctx, AV_LOG_ERROR, "Codec (%s) not on whitelist \'%s\'\n", codec->name, avctx->codec_whitelist);
650 ret = AVERROR(EINVAL);
651 goto free_and_end;
652 }
653
654 // only call ff_set_dimensions() for non H.264/VP6F/DXV codecs so as not to overwrite previously setup dimensions
655 if (!(avctx->coded_width && avctx->coded_height && avctx->width && avctx->height &&
656 (avctx->codec_id == AV_CODEC_ID_H264 || avctx->codec_id == AV_CODEC_ID_VP6F || avctx->codec_id == AV_CODEC_ID_DXV))) {
657 if (avctx->coded_width && avctx->coded_height)
658 ret = ff_set_dimensions(avctx, avctx->coded_width, avctx->coded_height);
659 else if (avctx->width && avctx->height)
660 ret = ff_set_dimensions(avctx, avctx->width, avctx->height);
661 if (ret < 0)
662 goto free_and_end;
663 }
664
665 if ((avctx->coded_width || avctx->coded_height || avctx->width || avctx->height)
666 && ( av_image_check_size2(avctx->coded_width, avctx->coded_height, avctx->max_pixels, AV_PIX_FMT_NONE, 0, avctx) < 0
667 || av_image_check_size2(avctx->width, avctx->height, avctx->max_pixels, AV_PIX_FMT_NONE, 0, avctx) < 0)) {
668 av_log(avctx, AV_LOG_WARNING, "Ignoring invalid width/height values\n");
669 ff_set_dimensions(avctx, 0, 0);
670 }
671
672 if (avctx->width > 0 && avctx->height > 0) {
673 if (av_image_check_sar(avctx->width, avctx->height,
674 avctx->sample_aspect_ratio) < 0) {
675 av_log(avctx, AV_LOG_WARNING, "ignoring invalid SAR: %u/%u\n",
676 avctx->sample_aspect_ratio.num,
677 avctx->sample_aspect_ratio.den);
678 avctx->sample_aspect_ratio = (AVRational){ 0, 1 };
679 }
680 }
681
682 /* if the decoder init function was already called previously,
683 * free the already allocated subtitle_header before overwriting it */
684 if (av_codec_is_decoder(codec))
685 av_freep(&avctx->subtitle_header);
686
687 if (avctx->channels > FF_SANE_NB_CHANNELS || avctx->channels < 0) {
688 av_log(avctx, AV_LOG_ERROR, "Too many or invalid channels: %d\n", avctx->channels);
689 ret = AVERROR(EINVAL);
690 goto free_and_end;
691 }
692 if (avctx->sample_rate < 0) {
693 av_log(avctx, AV_LOG_ERROR, "Invalid sample rate: %d\n", avctx->sample_rate);
694 ret = AVERROR(EINVAL);
695 goto free_and_end;
696 }
697 if (avctx->block_align < 0) {
698 av_log(avctx, AV_LOG_ERROR, "Invalid block align: %d\n", avctx->block_align);
699 ret = AVERROR(EINVAL);
700 goto free_and_end;
701 }
702
703 avctx->codec = codec;
704 if ((avctx->codec_type == AVMEDIA_TYPE_UNKNOWN || avctx->codec_type == codec->type) &&
705 avctx->codec_id == AV_CODEC_ID_NONE) {
706 avctx->codec_type = codec->type;
707 avctx->codec_id = codec->id;
708 }
709 if (avctx->codec_id != codec->id || (avctx->codec_type != codec->type
710 && avctx->codec_type != AVMEDIA_TYPE_ATTACHMENT)) {
711 av_log(avctx, AV_LOG_ERROR, "Codec type or id mismatches\n");
712 ret = AVERROR(EINVAL);
713 goto free_and_end;
714 }
715 avctx->frame_number = 0;
716 avctx->codec_descriptor = avcodec_descriptor_get(avctx->codec_id);
717
718 if ((avctx->codec->capabilities & AV_CODEC_CAP_EXPERIMENTAL) &&
719 avctx->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
720 const char *codec_string = av_codec_is_encoder(codec) ? "encoder" : "decoder";
721 AVCodec *codec2;
722 av_log(avctx, AV_LOG_ERROR,
723 "The %s '%s' is experimental but experimental codecs are not enabled, "
724 "add '-strict %d' if you want to use it.\n",
725 codec_string, codec->name, FF_COMPLIANCE_EXPERIMENTAL);
726 codec2 = av_codec_is_encoder(codec) ? avcodec_find_encoder(codec->id) : avcodec_find_decoder(codec->id);
727 if (!(codec2->capabilities & AV_CODEC_CAP_EXPERIMENTAL))
728 av_log(avctx, AV_LOG_ERROR, "Alternatively use the non experimental %s '%s'.\n",
729 codec_string, codec2->name);
730 ret = AVERROR_EXPERIMENTAL;
731 goto free_and_end;
732 }
733
734 if (avctx->codec_type == AVMEDIA_TYPE_AUDIO &&
735 (!avctx->time_base.num || !avctx->time_base.den)) {
736 avctx->time_base.num = 1;
737 avctx->time_base.den = avctx->sample_rate;
738 }
739
740 if (!HAVE_THREADS)
741 av_log(avctx, AV_LOG_WARNING, "Warning: not compiled with thread support, using thread emulation\n");
742
743 if (CONFIG_FRAME_THREAD_ENCODER && av_codec_is_encoder(avctx->codec)) {
744 ff_unlock_avcodec(codec); //we will instantiate a few encoders thus kick the counter to prevent false detection of a problem
745 ret = ff_frame_thread_encoder_init(avctx, options ? *options : NULL);
746 ff_lock_avcodec(avctx, codec);
747 if (ret < 0)
748 goto free_and_end;
749 }
750
751 if (av_codec_is_decoder(avctx->codec)) {
752 ret = ff_decode_bsfs_init(avctx);
753 if (ret < 0)
754 goto free_and_end;
755 }
756
757 if (HAVE_THREADS
758 && !(avctx->internal->frame_thread_encoder && (avctx->active_thread_type&FF_THREAD_FRAME))) {
759 ret = ff_thread_init(avctx);
760 if (ret < 0) {
761 goto free_and_end;
762 }
763 }
764 if (!HAVE_THREADS && !(codec->capabilities & AV_CODEC_CAP_AUTO_THREADS))
765 avctx->thread_count = 1;
766
767 if (avctx->codec->max_lowres < avctx->lowres || avctx->lowres < 0) {
768 av_log(avctx, AV_LOG_WARNING, "The maximum value for lowres supported by the decoder is %d\n",
769 avctx->codec->max_lowres);
770 avctx->lowres = avctx->codec->max_lowres;
771 }
772
773 if (av_codec_is_encoder(avctx->codec)) {
774 int i;
775 #if FF_API_CODED_FRAME
776 FF_DISABLE_DEPRECATION_WARNINGS
777 avctx->coded_frame = av_frame_alloc();
778 if (!avctx->coded_frame) {
779 ret = AVERROR(ENOMEM);
780 goto free_and_end;
781 }
782 FF_ENABLE_DEPRECATION_WARNINGS
783 #endif
784
785 if (avctx->time_base.num <= 0 || avctx->time_base.den <= 0) {
786 av_log(avctx, AV_LOG_ERROR, "The encoder timebase is not set.\n");
787 ret = AVERROR(EINVAL);
788 goto free_and_end;
789 }
790
791 if (avctx->codec->sample_fmts) {
792 for (i = 0; avctx->codec->sample_fmts[i] != AV_SAMPLE_FMT_NONE; i++) {
793 if (avctx->sample_fmt == avctx->codec->sample_fmts[i])
794 break;
795 if (avctx->channels == 1 &&
796 av_get_planar_sample_fmt(avctx->sample_fmt) ==
797 av_get_planar_sample_fmt(avctx->codec->sample_fmts[i])) {
798 avctx->sample_fmt = avctx->codec->sample_fmts[i];
799 break;
800 }
801 }
802 if (avctx->codec->sample_fmts[i] == AV_SAMPLE_FMT_NONE) {
803 char buf[128];
804 snprintf(buf, sizeof(buf), "%d", avctx->sample_fmt);
805 av_log(avctx, AV_LOG_ERROR, "Specified sample format %s is invalid or not supported\n",
806 (char *)av_x_if_null(av_get_sample_fmt_name(avctx->sample_fmt), buf));
807 ret = AVERROR(EINVAL);
808 goto free_and_end;
809 }
810 }
811 if (avctx->codec->pix_fmts) {
812 for (i = 0; avctx->codec->pix_fmts[i] != AV_PIX_FMT_NONE; i++)
813 if (avctx->pix_fmt == avctx->codec->pix_fmts[i])
814 break;
815 if (avctx->codec->pix_fmts[i] == AV_PIX_FMT_NONE
816 && !((avctx->codec_id == AV_CODEC_ID_MJPEG || avctx->codec_id == AV_CODEC_ID_LJPEG)
817 && avctx->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL)) {
818 char buf[128];
819 snprintf(buf, sizeof(buf), "%d", avctx->pix_fmt);
820 av_log(avctx, AV_LOG_ERROR, "Specified pixel format %s is invalid or not supported\n",
821 (char *)av_x_if_null(av_get_pix_fmt_name(avctx->pix_fmt), buf));
822 ret = AVERROR(EINVAL);
823 goto free_and_end;
824 }
825 if (avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ420P ||
826 avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ411P ||
827 avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ422P ||
828 avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ440P ||
829 avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ444P)
830 avctx->color_range = AVCOL_RANGE_JPEG;
831 }
832 if (avctx->codec->supported_samplerates) {
833 for (i = 0; avctx->codec->supported_samplerates[i] != 0; i++)
834 if (avctx->sample_rate == avctx->codec->supported_samplerates[i])
835 break;
836 if (avctx->codec->supported_samplerates[i] == 0) {
837 av_log(avctx, AV_LOG_ERROR, "Specified sample rate %d is not supported\n",
838 avctx->sample_rate);
839 ret = AVERROR(EINVAL);
840 goto free_and_end;
841 }
842 }
843 if (avctx->sample_rate < 0) {
844 av_log(avctx, AV_LOG_ERROR, "Specified sample rate %d is not supported\n",
845 avctx->sample_rate);
846 ret = AVERROR(EINVAL);
847 goto free_and_end;
848 }
849 if (avctx->codec->channel_layouts) {
850 if (!avctx->channel_layout) {
851 av_log(avctx, AV_LOG_WARNING, "Channel layout not specified\n");
852 } else {
853 for (i = 0; avctx->codec->channel_layouts[i] != 0; i++)
854 if (avctx->channel_layout == avctx->codec->channel_layouts[i])
855 break;
856 if (avctx->codec->channel_layouts[i] == 0) {
857 char buf[512];
858 av_get_channel_layout_string(buf, sizeof(buf), -1, avctx->channel_layout);
859 av_log(avctx, AV_LOG_ERROR, "Specified channel layout '%s' is not supported\n", buf);
860 ret = AVERROR(EINVAL);
861 goto free_and_end;
862 }
863 }
864 }
865 if (avctx->channel_layout && avctx->channels) {
866 int channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
867 if (channels != avctx->channels) {
868 char buf[512];
869 av_get_channel_layout_string(buf, sizeof(buf), -1, avctx->channel_layout);
870 av_log(avctx, AV_LOG_ERROR,
871 "Channel layout '%s' with %d channels does not match number of specified channels %d\n",
872 buf, channels, avctx->channels);
873 ret = AVERROR(EINVAL);
874 goto free_and_end;
875 }
876 } else if (avctx->channel_layout) {
877 avctx->channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
878 }
879 if (avctx->channels < 0) {
880 av_log(avctx, AV_LOG_ERROR, "Specified number of channels %d is not supported\n",
881 avctx->channels);
882 ret = AVERROR(EINVAL);
883 goto free_and_end;
884 }
885 if(avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
886 pixdesc = av_pix_fmt_desc_get(avctx->pix_fmt);
887 if ( avctx->bits_per_raw_sample < 0
888 || (avctx->bits_per_raw_sample > 8 && pixdesc->comp[0].depth <= 8)) {
889 av_log(avctx, AV_LOG_WARNING, "Specified bit depth %d not possible with the specified pixel formats depth %d\n",
890 avctx->bits_per_raw_sample, pixdesc->comp[0].depth);
891 avctx->bits_per_raw_sample = pixdesc->comp[0].depth;
892 }
893 if (avctx->width <= 0 || avctx->height <= 0) {
894 av_log(avctx, AV_LOG_ERROR, "dimensions not set\n");
895 ret = AVERROR(EINVAL);
896 goto free_and_end;
897 }
898 }
899 if ( (avctx->codec_type == AVMEDIA_TYPE_VIDEO || avctx->codec_type == AVMEDIA_TYPE_AUDIO)
900 && avctx->bit_rate>0 && avctx->bit_rate<1000) {
901 av_log(avctx, AV_LOG_WARNING, "Bitrate %"PRId64" is extremely low, maybe you mean %"PRId64"k\n", avctx->bit_rate, avctx->bit_rate);
902 }
903
904 if (!avctx->rc_initial_buffer_occupancy)
905 avctx->rc_initial_buffer_occupancy = avctx->rc_buffer_size * 3LL / 4;
906
907 if (avctx->ticks_per_frame && avctx->time_base.num &&
908 avctx->ticks_per_frame > INT_MAX / avctx->time_base.num) {
909 av_log(avctx, AV_LOG_ERROR,
910 "ticks_per_frame %d too large for the timebase %d/%d.",
911 avctx->ticks_per_frame,
912 avctx->time_base.num,
913 avctx->time_base.den);
914 goto free_and_end;
915 }
916
917 if (avctx->hw_frames_ctx) {
918 AVHWFramesContext *frames_ctx = (AVHWFramesContext*)avctx->hw_frames_ctx->data;
919 if (frames_ctx->format != avctx->pix_fmt) {
920 av_log(avctx, AV_LOG_ERROR,
921 "Mismatching AVCodecContext.pix_fmt and AVHWFramesContext.format\n");
922 ret = AVERROR(EINVAL);
923 goto free_and_end;
924 }
925 if (avctx->sw_pix_fmt != AV_PIX_FMT_NONE &&
926 avctx->sw_pix_fmt != frames_ctx->sw_format) {
927 av_log(avctx, AV_LOG_ERROR,
928 "Mismatching AVCodecContext.sw_pix_fmt (%s) "
929 "and AVHWFramesContext.sw_format (%s)\n",
930 av_get_pix_fmt_name(avctx->sw_pix_fmt),
931 av_get_pix_fmt_name(frames_ctx->sw_format));
932 ret = AVERROR(EINVAL);
933 goto free_and_end;
934 }
935 avctx->sw_pix_fmt = frames_ctx->sw_format;
936 }
937 }
938
939 avctx->pts_correction_num_faulty_pts =
940 avctx->pts_correction_num_faulty_dts = 0;
941 avctx->pts_correction_last_pts =
942 avctx->pts_correction_last_dts = INT64_MIN;
943
944 if ( !CONFIG_GRAY && avctx->flags & AV_CODEC_FLAG_GRAY
945 && avctx->codec_descriptor->type == AVMEDIA_TYPE_VIDEO)
946 av_log(avctx, AV_LOG_WARNING,
947 "gray decoding requested but not enabled at configuration time\n");
948
949 if ( avctx->codec->init && (!(avctx->active_thread_type&FF_THREAD_FRAME)
950 || avctx->internal->frame_thread_encoder)) {
951 ret = avctx->codec->init(avctx);
952 if (ret < 0) {
953 goto free_and_end;
954 }
955 codec_init_ok = 1;
956 }
957
958 ret=0;
959
960 if (av_codec_is_decoder(avctx->codec)) {
961 if (!avctx->bit_rate)
962 avctx->bit_rate = get_bit_rate(avctx);
963 /* validate channel layout from the decoder */
964 if (avctx->channel_layout) {
965 int channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
966 if (!avctx->channels)
967 avctx->channels = channels;
968 else if (channels != avctx->channels) {
969 char buf[512];
970 av_get_channel_layout_string(buf, sizeof(buf), -1, avctx->channel_layout);
971 av_log(avctx, AV_LOG_WARNING,
972 "Channel layout '%s' with %d channels does not match specified number of channels %d: "
973 "ignoring specified channel layout\n",
974 buf, channels, avctx->channels);
975 avctx->channel_layout = 0;
976 }
977 }
978 if (avctx->channels && avctx->channels < 0 ||
979 avctx->channels > FF_SANE_NB_CHANNELS) {
980 ret = AVERROR(EINVAL);
981 goto free_and_end;
982 }
983 if (avctx->bits_per_coded_sample < 0) {
984 ret = AVERROR(EINVAL);
985 goto free_and_end;
986 }
987 if (avctx->sub_charenc) {
988 if (avctx->codec_type != AVMEDIA_TYPE_SUBTITLE) {
989 av_log(avctx, AV_LOG_ERROR, "Character encoding is only "
990 "supported with subtitles codecs\n");
991 ret = AVERROR(EINVAL);
992 goto free_and_end;
993 } else if (avctx->codec_descriptor->props & AV_CODEC_PROP_BITMAP_SUB) {
994 av_log(avctx, AV_LOG_WARNING, "Codec '%s' is bitmap-based, "
995 "subtitles character encoding will be ignored\n",
996 avctx->codec_descriptor->name);
997 avctx->sub_charenc_mode = FF_SUB_CHARENC_MODE_DO_NOTHING;
998 } else {
999 /* input character encoding is set for a text based subtitle
1000 * codec at this point */
1001 if (avctx->sub_charenc_mode == FF_SUB_CHARENC_MODE_AUTOMATIC)
1002 avctx->sub_charenc_mode = FF_SUB_CHARENC_MODE_PRE_DECODER;
1003
1004 if (avctx->sub_charenc_mode == FF_SUB_CHARENC_MODE_PRE_DECODER) {
1005 #if CONFIG_ICONV
1006 iconv_t cd = iconv_open("UTF-8", avctx->sub_charenc);
1007 if (cd == (iconv_t)-1) {
1008 ret = AVERROR(errno);
1009 av_log(avctx, AV_LOG_ERROR, "Unable to open iconv context "
1010 "with input character encoding \"%s\"\n", avctx->sub_charenc);
1011 goto free_and_end;
1012 }
1013 iconv_close(cd);
1014 #else
1015 av_log(avctx, AV_LOG_ERROR, "Character encoding subtitles "
1016 "conversion needs a libavcodec built with iconv support "
1017 "for this codec\n");
1018 ret = AVERROR(ENOSYS);
1019 goto free_and_end;
1020 #endif
1021 }
1022 }
1023 }
1024
1025 #if FF_API_AVCTX_TIMEBASE
1026 if (avctx->framerate.num > 0 && avctx->framerate.den > 0)
1027 avctx->time_base = av_inv_q(av_mul_q(avctx->framerate, (AVRational){avctx->ticks_per_frame, 1}));
1028 #endif
1029 }
1030 if (codec->priv_data_size > 0 && avctx->priv_data && codec->priv_class) {
1031 av_assert0(*(const AVClass **)avctx->priv_data == codec->priv_class);
1032 }
1033
1034 end:
1035 ff_unlock_avcodec(codec);
1036 if (options) {
1037 av_dict_free(options);
1038 *options = tmp;
1039 }
1040
1041 return ret;
1042 free_and_end:
1043 if (avctx->codec && avctx->codec->close &&
1044 (codec_init_ok ||
1045 (avctx->codec->caps_internal & FF_CODEC_CAP_INIT_CLEANUP)))
1046 avctx->codec->close(avctx);
1047
1048 if (HAVE_THREADS && avctx->internal->thread_ctx)
1049 ff_thread_free(avctx);
1050
1051 if (codec->priv_class && codec->priv_data_size)
1052 av_opt_free(avctx->priv_data);
1053 av_opt_free(avctx);
1054
1055 #if FF_API_CODED_FRAME
1056 FF_DISABLE_DEPRECATION_WARNINGS
1057 av_frame_free(&avctx->coded_frame);
1058 FF_ENABLE_DEPRECATION_WARNINGS
1059 #endif
1060
1061 av_dict_free(&tmp);
1062 av_freep(&avctx->priv_data);
1063 av_freep(&avctx->subtitle_header);
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);
1070
1071 av_packet_free(&avctx->internal->ds.in_pkt);
1072 ff_decode_bsfs_uninit(avctx);
1073
1074 av_freep(&avctx->internal->pool);
1075 }
1076 av_freep(&avctx->internal);
1077 avctx->codec = NULL;
1078 goto end;
1079 }
1080
avsubtitle_free(AVSubtitle * sub)1081 void avsubtitle_free(AVSubtitle *sub)
1082 {
1083 int i;
1084
1085 for (i = 0; i < sub->num_rects; i++) {
1086 av_freep(&sub->rects[i]->data[0]);
1087 av_freep(&sub->rects[i]->data[1]);
1088 av_freep(&sub->rects[i]->data[2]);
1089 av_freep(&sub->rects[i]->data[3]);
1090 av_freep(&sub->rects[i]->text);
1091 av_freep(&sub->rects[i]->ass);
1092 av_freep(&sub->rects[i]);
1093 }
1094
1095 av_freep(&sub->rects);
1096
1097 memset(sub, 0, sizeof(*sub));
1098 }
1099
avcodec_close(AVCodecContext * avctx)1100 av_cold int avcodec_close(AVCodecContext *avctx)
1101 {
1102 int i;
1103
1104 if (!avctx)
1105 return 0;
1106
1107 if (avcodec_is_open(avctx)) {
1108 FramePool *pool = avctx->internal->pool;
1109 if (CONFIG_FRAME_THREAD_ENCODER &&
1110 avctx->internal->frame_thread_encoder && avctx->thread_count > 1) {
1111 ff_frame_thread_encoder_free(avctx);
1112 }
1113 if (HAVE_THREADS && avctx->internal->thread_ctx)
1114 ff_thread_free(avctx);
1115 if (avctx->codec && avctx->codec->close)
1116 avctx->codec->close(avctx);
1117 avctx->internal->byte_buffer_size = 0;
1118 av_freep(&avctx->internal->byte_buffer);
1119 av_frame_free(&avctx->internal->to_free);
1120 av_frame_free(&avctx->internal->compat_decode_frame);
1121 av_frame_free(&avctx->internal->buffer_frame);
1122 av_packet_free(&avctx->internal->buffer_pkt);
1123 av_packet_free(&avctx->internal->last_pkt_props);
1124
1125 av_packet_free(&avctx->internal->ds.in_pkt);
1126
1127 for (i = 0; i < FF_ARRAY_ELEMS(pool->pools); i++)
1128 av_buffer_pool_uninit(&pool->pools[i]);
1129 av_freep(&avctx->internal->pool);
1130
1131 if (avctx->hwaccel && avctx->hwaccel->uninit)
1132 avctx->hwaccel->uninit(avctx);
1133 av_freep(&avctx->internal->hwaccel_priv_data);
1134
1135 ff_decode_bsfs_uninit(avctx);
1136
1137 av_freep(&avctx->internal);
1138 }
1139
1140 for (i = 0; i < avctx->nb_coded_side_data; i++)
1141 av_freep(&avctx->coded_side_data[i].data);
1142 av_freep(&avctx->coded_side_data);
1143 avctx->nb_coded_side_data = 0;
1144
1145 av_buffer_unref(&avctx->hw_frames_ctx);
1146 av_buffer_unref(&avctx->hw_device_ctx);
1147
1148 if (avctx->priv_data && avctx->codec && avctx->codec->priv_class)
1149 av_opt_free(avctx->priv_data);
1150 av_opt_free(avctx);
1151 av_freep(&avctx->priv_data);
1152 if (av_codec_is_encoder(avctx->codec)) {
1153 av_freep(&avctx->extradata);
1154 #if FF_API_CODED_FRAME
1155 FF_DISABLE_DEPRECATION_WARNINGS
1156 av_frame_free(&avctx->coded_frame);
1157 FF_ENABLE_DEPRECATION_WARNINGS
1158 #endif
1159 }
1160 avctx->codec = NULL;
1161 avctx->active_thread_type = 0;
1162
1163 return 0;
1164 }
1165
avcodec_get_name(enum AVCodecID id)1166 const char *avcodec_get_name(enum AVCodecID id)
1167 {
1168 const AVCodecDescriptor *cd;
1169 AVCodec *codec;
1170
1171 if (id == AV_CODEC_ID_NONE)
1172 return "none";
1173 cd = avcodec_descriptor_get(id);
1174 if (cd)
1175 return cd->name;
1176 av_log(NULL, AV_LOG_WARNING, "Codec 0x%x is not in the full list.\n", id);
1177 codec = avcodec_find_decoder(id);
1178 if (codec)
1179 return codec->name;
1180 codec = avcodec_find_encoder(id);
1181 if (codec)
1182 return codec->name;
1183 return "unknown_codec";
1184 }
1185
av_get_codec_tag_string(char * buf,size_t buf_size,unsigned int codec_tag)1186 size_t av_get_codec_tag_string(char *buf, size_t buf_size, unsigned int codec_tag)
1187 {
1188 int i, len, ret = 0;
1189
1190 #define TAG_PRINT(x) \
1191 (((x) >= '0' && (x) <= '9') || \
1192 ((x) >= 'a' && (x) <= 'z') || ((x) >= 'A' && (x) <= 'Z') || \
1193 ((x) == '.' || (x) == ' ' || (x) == '-' || (x) == '_'))
1194
1195 for (i = 0; i < 4; i++) {
1196 len = snprintf(buf, buf_size,
1197 TAG_PRINT(codec_tag & 0xFF) ? "%c" : "[%d]", codec_tag & 0xFF);
1198 buf += len;
1199 buf_size = buf_size > len ? buf_size - len : 0;
1200 ret += len;
1201 codec_tag >>= 8;
1202 }
1203 return ret;
1204 }
1205
avcodec_string(char * buf,int buf_size,AVCodecContext * enc,int encode)1206 void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)
1207 {
1208 const char *codec_type;
1209 const char *codec_name;
1210 const char *profile = NULL;
1211 int64_t bitrate;
1212 int new_line = 0;
1213 AVRational display_aspect_ratio;
1214 const char *separator = enc->dump_separator ? (const char *)enc->dump_separator : ", ";
1215
1216 if (!buf || buf_size <= 0)
1217 return;
1218 codec_type = av_get_media_type_string(enc->codec_type);
1219 codec_name = avcodec_get_name(enc->codec_id);
1220 profile = avcodec_profile_name(enc->codec_id, enc->profile);
1221
1222 snprintf(buf, buf_size, "%s: %s", codec_type ? codec_type : "unknown",
1223 codec_name);
1224 buf[0] ^= 'a' ^ 'A'; /* first letter in uppercase */
1225
1226 if (enc->codec && strcmp(enc->codec->name, codec_name))
1227 snprintf(buf + strlen(buf), buf_size - strlen(buf), " (%s)", enc->codec->name);
1228
1229 if (profile)
1230 snprintf(buf + strlen(buf), buf_size - strlen(buf), " (%s)", profile);
1231 if ( enc->codec_type == AVMEDIA_TYPE_VIDEO
1232 && av_log_get_level() >= AV_LOG_VERBOSE
1233 && enc->refs)
1234 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1235 ", %d reference frame%s",
1236 enc->refs, enc->refs > 1 ? "s" : "");
1237
1238 if (enc->codec_tag)
1239 snprintf(buf + strlen(buf), buf_size - strlen(buf), " (%s / 0x%04X)",
1240 av_fourcc2str(enc->codec_tag), enc->codec_tag);
1241
1242 switch (enc->codec_type) {
1243 case AVMEDIA_TYPE_VIDEO:
1244 {
1245 char detail[256] = "(";
1246
1247 av_strlcat(buf, separator, buf_size);
1248
1249 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1250 "%s", enc->pix_fmt == AV_PIX_FMT_NONE ? "none" :
1251 av_get_pix_fmt_name(enc->pix_fmt));
1252 if (enc->bits_per_raw_sample && enc->pix_fmt != AV_PIX_FMT_NONE &&
1253 enc->bits_per_raw_sample < av_pix_fmt_desc_get(enc->pix_fmt)->comp[0].depth)
1254 av_strlcatf(detail, sizeof(detail), "%d bpc, ", enc->bits_per_raw_sample);
1255 if (enc->color_range != AVCOL_RANGE_UNSPECIFIED)
1256 av_strlcatf(detail, sizeof(detail), "%s, ",
1257 av_color_range_name(enc->color_range));
1258
1259 if (enc->colorspace != AVCOL_SPC_UNSPECIFIED ||
1260 enc->color_primaries != AVCOL_PRI_UNSPECIFIED ||
1261 enc->color_trc != AVCOL_TRC_UNSPECIFIED) {
1262 if (enc->colorspace != (int)enc->color_primaries ||
1263 enc->colorspace != (int)enc->color_trc) {
1264 new_line = 1;
1265 av_strlcatf(detail, sizeof(detail), "%s/%s/%s, ",
1266 av_color_space_name(enc->colorspace),
1267 av_color_primaries_name(enc->color_primaries),
1268 av_color_transfer_name(enc->color_trc));
1269 } else
1270 av_strlcatf(detail, sizeof(detail), "%s, ",
1271 av_get_colorspace_name(enc->colorspace));
1272 }
1273
1274 if (enc->field_order != AV_FIELD_UNKNOWN) {
1275 const char *field_order = "progressive";
1276 if (enc->field_order == AV_FIELD_TT)
1277 field_order = "top first";
1278 else if (enc->field_order == AV_FIELD_BB)
1279 field_order = "bottom first";
1280 else if (enc->field_order == AV_FIELD_TB)
1281 field_order = "top coded first (swapped)";
1282 else if (enc->field_order == AV_FIELD_BT)
1283 field_order = "bottom coded first (swapped)";
1284
1285 av_strlcatf(detail, sizeof(detail), "%s, ", field_order);
1286 }
1287
1288 if (av_log_get_level() >= AV_LOG_VERBOSE &&
1289 enc->chroma_sample_location != AVCHROMA_LOC_UNSPECIFIED)
1290 av_strlcatf(detail, sizeof(detail), "%s, ",
1291 av_chroma_location_name(enc->chroma_sample_location));
1292
1293 if (strlen(detail) > 1) {
1294 detail[strlen(detail) - 2] = 0;
1295 av_strlcatf(buf, buf_size, "%s)", detail);
1296 }
1297 }
1298
1299 if (enc->width) {
1300 av_strlcat(buf, new_line ? separator : ", ", buf_size);
1301
1302 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1303 "%dx%d",
1304 enc->width, enc->height);
1305
1306 if (av_log_get_level() >= AV_LOG_VERBOSE &&
1307 (enc->width != enc->coded_width ||
1308 enc->height != enc->coded_height))
1309 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1310 " (%dx%d)", enc->coded_width, enc->coded_height);
1311
1312 if (enc->sample_aspect_ratio.num) {
1313 av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
1314 enc->width * (int64_t)enc->sample_aspect_ratio.num,
1315 enc->height * (int64_t)enc->sample_aspect_ratio.den,
1316 1024 * 1024);
1317 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1318 " [SAR %d:%d DAR %d:%d]",
1319 enc->sample_aspect_ratio.num, enc->sample_aspect_ratio.den,
1320 display_aspect_ratio.num, display_aspect_ratio.den);
1321 }
1322 if (av_log_get_level() >= AV_LOG_DEBUG) {
1323 int g = av_gcd(enc->time_base.num, enc->time_base.den);
1324 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1325 ", %d/%d",
1326 enc->time_base.num / g, enc->time_base.den / g);
1327 }
1328 }
1329 if (encode) {
1330 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1331 ", q=%d-%d", enc->qmin, enc->qmax);
1332 } else {
1333 if (enc->properties & FF_CODEC_PROPERTY_CLOSED_CAPTIONS)
1334 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1335 ", Closed Captions");
1336 if (enc->properties & FF_CODEC_PROPERTY_LOSSLESS)
1337 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1338 ", lossless");
1339 }
1340 break;
1341 case AVMEDIA_TYPE_AUDIO:
1342 av_strlcat(buf, separator, buf_size);
1343
1344 if (enc->sample_rate) {
1345 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1346 "%d Hz, ", enc->sample_rate);
1347 }
1348 av_get_channel_layout_string(buf + strlen(buf), buf_size - strlen(buf), enc->channels, enc->channel_layout);
1349 if (enc->sample_fmt != AV_SAMPLE_FMT_NONE) {
1350 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1351 ", %s", av_get_sample_fmt_name(enc->sample_fmt));
1352 }
1353 if ( enc->bits_per_raw_sample > 0
1354 && enc->bits_per_raw_sample != av_get_bytes_per_sample(enc->sample_fmt) * 8)
1355 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1356 " (%d bit)", enc->bits_per_raw_sample);
1357 if (av_log_get_level() >= AV_LOG_VERBOSE) {
1358 if (enc->initial_padding)
1359 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1360 ", delay %d", enc->initial_padding);
1361 if (enc->trailing_padding)
1362 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1363 ", padding %d", enc->trailing_padding);
1364 }
1365 break;
1366 case AVMEDIA_TYPE_DATA:
1367 if (av_log_get_level() >= AV_LOG_DEBUG) {
1368 int g = av_gcd(enc->time_base.num, enc->time_base.den);
1369 if (g)
1370 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1371 ", %d/%d",
1372 enc->time_base.num / g, enc->time_base.den / g);
1373 }
1374 break;
1375 case AVMEDIA_TYPE_SUBTITLE:
1376 if (enc->width)
1377 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1378 ", %dx%d", enc->width, enc->height);
1379 break;
1380 default:
1381 return;
1382 }
1383 if (encode) {
1384 if (enc->flags & AV_CODEC_FLAG_PASS1)
1385 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1386 ", pass 1");
1387 if (enc->flags & AV_CODEC_FLAG_PASS2)
1388 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1389 ", pass 2");
1390 }
1391 bitrate = get_bit_rate(enc);
1392 if (bitrate != 0) {
1393 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1394 ", %"PRId64" kb/s", bitrate / 1000);
1395 } else if (enc->rc_max_rate > 0) {
1396 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1397 ", max. %"PRId64" kb/s", enc->rc_max_rate / 1000);
1398 }
1399 }
1400
av_get_profile_name(const AVCodec * codec,int profile)1401 const char *av_get_profile_name(const AVCodec *codec, int profile)
1402 {
1403 const AVProfile *p;
1404 if (profile == FF_PROFILE_UNKNOWN || !codec->profiles)
1405 return NULL;
1406
1407 for (p = codec->profiles; p->profile != FF_PROFILE_UNKNOWN; p++)
1408 if (p->profile == profile)
1409 return p->name;
1410
1411 return NULL;
1412 }
1413
avcodec_profile_name(enum AVCodecID codec_id,int profile)1414 const char *avcodec_profile_name(enum AVCodecID codec_id, int profile)
1415 {
1416 const AVCodecDescriptor *desc = avcodec_descriptor_get(codec_id);
1417 const AVProfile *p;
1418
1419 if (profile == FF_PROFILE_UNKNOWN || !desc || !desc->profiles)
1420 return NULL;
1421
1422 for (p = desc->profiles; p->profile != FF_PROFILE_UNKNOWN; p++)
1423 if (p->profile == profile)
1424 return p->name;
1425
1426 return NULL;
1427 }
1428
avcodec_version(void)1429 unsigned avcodec_version(void)
1430 {
1431 av_assert0(AV_CODEC_ID_PCM_S8_PLANAR==65563);
1432 av_assert0(AV_CODEC_ID_ADPCM_G722==69660);
1433 av_assert0(AV_CODEC_ID_SRT==94216);
1434 av_assert0(LIBAVCODEC_VERSION_MICRO >= 100);
1435
1436 return LIBAVCODEC_VERSION_INT;
1437 }
1438
avcodec_configuration(void)1439 const char *avcodec_configuration(void)
1440 {
1441 return FFMPEG_CONFIGURATION;
1442 }
1443
avcodec_license(void)1444 const char *avcodec_license(void)
1445 {
1446 #define LICENSE_PREFIX "libavcodec license: "
1447 return LICENSE_PREFIX FFMPEG_LICENSE + sizeof(LICENSE_PREFIX) - 1;
1448 }
1449
av_get_exact_bits_per_sample(enum AVCodecID codec_id)1450 int av_get_exact_bits_per_sample(enum AVCodecID codec_id)
1451 {
1452 switch (codec_id) {
1453 case AV_CODEC_ID_8SVX_EXP:
1454 case AV_CODEC_ID_8SVX_FIB:
1455 case AV_CODEC_ID_ADPCM_CT:
1456 case AV_CODEC_ID_ADPCM_IMA_APC:
1457 case AV_CODEC_ID_ADPCM_IMA_EA_SEAD:
1458 case AV_CODEC_ID_ADPCM_IMA_OKI:
1459 case AV_CODEC_ID_ADPCM_IMA_WS:
1460 case AV_CODEC_ID_ADPCM_G722:
1461 case AV_CODEC_ID_ADPCM_YAMAHA:
1462 case AV_CODEC_ID_ADPCM_AICA:
1463 return 4;
1464 case AV_CODEC_ID_DSD_LSBF:
1465 case AV_CODEC_ID_DSD_MSBF:
1466 case AV_CODEC_ID_DSD_LSBF_PLANAR:
1467 case AV_CODEC_ID_DSD_MSBF_PLANAR:
1468 case AV_CODEC_ID_PCM_ALAW:
1469 case AV_CODEC_ID_PCM_MULAW:
1470 case AV_CODEC_ID_PCM_VIDC:
1471 case AV_CODEC_ID_PCM_S8:
1472 case AV_CODEC_ID_PCM_S8_PLANAR:
1473 case AV_CODEC_ID_PCM_U8:
1474 case AV_CODEC_ID_PCM_ZORK:
1475 case AV_CODEC_ID_SDX2_DPCM:
1476 return 8;
1477 case AV_CODEC_ID_PCM_S16BE:
1478 case AV_CODEC_ID_PCM_S16BE_PLANAR:
1479 case AV_CODEC_ID_PCM_S16LE:
1480 case AV_CODEC_ID_PCM_S16LE_PLANAR:
1481 case AV_CODEC_ID_PCM_U16BE:
1482 case AV_CODEC_ID_PCM_U16LE:
1483 return 16;
1484 case AV_CODEC_ID_PCM_S24DAUD:
1485 case AV_CODEC_ID_PCM_S24BE:
1486 case AV_CODEC_ID_PCM_S24LE:
1487 case AV_CODEC_ID_PCM_S24LE_PLANAR:
1488 case AV_CODEC_ID_PCM_U24BE:
1489 case AV_CODEC_ID_PCM_U24LE:
1490 return 24;
1491 case AV_CODEC_ID_PCM_S32BE:
1492 case AV_CODEC_ID_PCM_S32LE:
1493 case AV_CODEC_ID_PCM_S32LE_PLANAR:
1494 case AV_CODEC_ID_PCM_U32BE:
1495 case AV_CODEC_ID_PCM_U32LE:
1496 case AV_CODEC_ID_PCM_F32BE:
1497 case AV_CODEC_ID_PCM_F32LE:
1498 case AV_CODEC_ID_PCM_F24LE:
1499 case AV_CODEC_ID_PCM_F16LE:
1500 return 32;
1501 case AV_CODEC_ID_PCM_F64BE:
1502 case AV_CODEC_ID_PCM_F64LE:
1503 case AV_CODEC_ID_PCM_S64BE:
1504 case AV_CODEC_ID_PCM_S64LE:
1505 return 64;
1506 default:
1507 return 0;
1508 }
1509 }
1510
av_get_pcm_codec(enum AVSampleFormat fmt,int be)1511 enum AVCodecID av_get_pcm_codec(enum AVSampleFormat fmt, int be)
1512 {
1513 static const enum AVCodecID map[AV_SAMPLE_FMT_NB][2] = {
1514 [AV_SAMPLE_FMT_U8 ] = { AV_CODEC_ID_PCM_U8, AV_CODEC_ID_PCM_U8 },
1515 [AV_SAMPLE_FMT_S16 ] = { AV_CODEC_ID_PCM_S16LE, AV_CODEC_ID_PCM_S16BE },
1516 [AV_SAMPLE_FMT_S32 ] = { AV_CODEC_ID_PCM_S32LE, AV_CODEC_ID_PCM_S32BE },
1517 [AV_SAMPLE_FMT_FLT ] = { AV_CODEC_ID_PCM_F32LE, AV_CODEC_ID_PCM_F32BE },
1518 [AV_SAMPLE_FMT_DBL ] = { AV_CODEC_ID_PCM_F64LE, AV_CODEC_ID_PCM_F64BE },
1519 [AV_SAMPLE_FMT_U8P ] = { AV_CODEC_ID_PCM_U8, AV_CODEC_ID_PCM_U8 },
1520 [AV_SAMPLE_FMT_S16P] = { AV_CODEC_ID_PCM_S16LE, AV_CODEC_ID_PCM_S16BE },
1521 [AV_SAMPLE_FMT_S32P] = { AV_CODEC_ID_PCM_S32LE, AV_CODEC_ID_PCM_S32BE },
1522 [AV_SAMPLE_FMT_S64P] = { AV_CODEC_ID_PCM_S64LE, AV_CODEC_ID_PCM_S64BE },
1523 [AV_SAMPLE_FMT_FLTP] = { AV_CODEC_ID_PCM_F32LE, AV_CODEC_ID_PCM_F32BE },
1524 [AV_SAMPLE_FMT_DBLP] = { AV_CODEC_ID_PCM_F64LE, AV_CODEC_ID_PCM_F64BE },
1525 };
1526 if (fmt < 0 || fmt >= AV_SAMPLE_FMT_NB)
1527 return AV_CODEC_ID_NONE;
1528 if (be < 0 || be > 1)
1529 be = AV_NE(1, 0);
1530 return map[fmt][be];
1531 }
1532
av_get_bits_per_sample(enum AVCodecID codec_id)1533 int av_get_bits_per_sample(enum AVCodecID codec_id)
1534 {
1535 switch (codec_id) {
1536 case AV_CODEC_ID_ADPCM_SBPRO_2:
1537 return 2;
1538 case AV_CODEC_ID_ADPCM_SBPRO_3:
1539 return 3;
1540 case AV_CODEC_ID_ADPCM_SBPRO_4:
1541 case AV_CODEC_ID_ADPCM_IMA_WAV:
1542 case AV_CODEC_ID_ADPCM_IMA_QT:
1543 case AV_CODEC_ID_ADPCM_SWF:
1544 case AV_CODEC_ID_ADPCM_MS:
1545 return 4;
1546 default:
1547 return av_get_exact_bits_per_sample(codec_id);
1548 }
1549 }
1550
get_audio_frame_duration(enum AVCodecID id,int sr,int ch,int ba,uint32_t tag,int bits_per_coded_sample,int64_t bitrate,uint8_t * extradata,int frame_size,int frame_bytes)1551 static int get_audio_frame_duration(enum AVCodecID id, int sr, int ch, int ba,
1552 uint32_t tag, int bits_per_coded_sample, int64_t bitrate,
1553 uint8_t * extradata, int frame_size, int frame_bytes)
1554 {
1555 int bps = av_get_exact_bits_per_sample(id);
1556 int framecount = (ba > 0 && frame_bytes / ba > 0) ? frame_bytes / ba : 1;
1557
1558 /* codecs with an exact constant bits per sample */
1559 if (bps > 0 && ch > 0 && frame_bytes > 0 && ch < 32768 && bps < 32768)
1560 return (frame_bytes * 8LL) / (bps * ch);
1561 bps = bits_per_coded_sample;
1562
1563 /* codecs with a fixed packet duration */
1564 switch (id) {
1565 case AV_CODEC_ID_ADPCM_ADX: return 32;
1566 case AV_CODEC_ID_ADPCM_IMA_QT: return 64;
1567 case AV_CODEC_ID_ADPCM_EA_XAS: return 128;
1568 case AV_CODEC_ID_AMR_NB:
1569 case AV_CODEC_ID_EVRC:
1570 case AV_CODEC_ID_GSM:
1571 case AV_CODEC_ID_QCELP:
1572 case AV_CODEC_ID_RA_288: return 160;
1573 case AV_CODEC_ID_AMR_WB:
1574 case AV_CODEC_ID_GSM_MS: return 320;
1575 case AV_CODEC_ID_MP1: return 384;
1576 case AV_CODEC_ID_ATRAC1: return 512;
1577 case AV_CODEC_ID_ATRAC9:
1578 case AV_CODEC_ID_ATRAC3: return 1024 * framecount;
1579 case AV_CODEC_ID_ATRAC3P: return 2048;
1580 case AV_CODEC_ID_MP2:
1581 case AV_CODEC_ID_MUSEPACK7: return 1152;
1582 case AV_CODEC_ID_AC3: return 1536;
1583 }
1584
1585 if (sr > 0) {
1586 /* calc from sample rate */
1587 if (id == AV_CODEC_ID_TTA)
1588 return 256 * sr / 245;
1589 else if (id == AV_CODEC_ID_DST)
1590 return 588 * sr / 44100;
1591
1592 if (ch > 0) {
1593 /* calc from sample rate and channels */
1594 if (id == AV_CODEC_ID_BINKAUDIO_DCT)
1595 return (480 << (sr / 22050)) / ch;
1596 }
1597
1598 if (id == AV_CODEC_ID_MP3)
1599 return sr <= 24000 ? 576 : 1152;
1600 }
1601
1602 if (ba > 0) {
1603 /* calc from block_align */
1604 if (id == AV_CODEC_ID_SIPR) {
1605 switch (ba) {
1606 case 20: return 160;
1607 case 19: return 144;
1608 case 29: return 288;
1609 case 37: return 480;
1610 }
1611 } else if (id == AV_CODEC_ID_ILBC) {
1612 switch (ba) {
1613 case 38: return 160;
1614 case 50: return 240;
1615 }
1616 }
1617 }
1618
1619 if (frame_bytes > 0) {
1620 /* calc from frame_bytes only */
1621 if (id == AV_CODEC_ID_TRUESPEECH)
1622 return 240 * (frame_bytes / 32);
1623 if (id == AV_CODEC_ID_NELLYMOSER)
1624 return 256 * (frame_bytes / 64);
1625 if (id == AV_CODEC_ID_RA_144)
1626 return 160 * (frame_bytes / 20);
1627
1628 if (bps > 0) {
1629 /* calc from frame_bytes and bits_per_coded_sample */
1630 if (id == AV_CODEC_ID_ADPCM_G726 || id == AV_CODEC_ID_ADPCM_G726LE)
1631 return frame_bytes * 8 / bps;
1632 }
1633
1634 if (ch > 0 && ch < INT_MAX/16) {
1635 /* calc from frame_bytes and channels */
1636 switch (id) {
1637 case AV_CODEC_ID_ADPCM_AFC:
1638 return frame_bytes / (9 * ch) * 16;
1639 case AV_CODEC_ID_ADPCM_PSX:
1640 case AV_CODEC_ID_ADPCM_DTK:
1641 return frame_bytes / (16 * ch) * 28;
1642 case AV_CODEC_ID_ADPCM_4XM:
1643 case AV_CODEC_ID_ADPCM_IMA_DAT4:
1644 case AV_CODEC_ID_ADPCM_IMA_ISS:
1645 return (frame_bytes - 4 * ch) * 2 / ch;
1646 case AV_CODEC_ID_ADPCM_IMA_SMJPEG:
1647 return (frame_bytes - 4) * 2 / ch;
1648 case AV_CODEC_ID_ADPCM_IMA_AMV:
1649 return (frame_bytes - 8) * 2 / ch;
1650 case AV_CODEC_ID_ADPCM_THP:
1651 case AV_CODEC_ID_ADPCM_THP_LE:
1652 if (extradata)
1653 return frame_bytes * 14 / (8 * ch);
1654 break;
1655 case AV_CODEC_ID_ADPCM_XA:
1656 return (frame_bytes / 128) * 224 / ch;
1657 case AV_CODEC_ID_INTERPLAY_DPCM:
1658 return (frame_bytes - 6 - ch) / ch;
1659 case AV_CODEC_ID_ROQ_DPCM:
1660 return (frame_bytes - 8) / ch;
1661 case AV_CODEC_ID_XAN_DPCM:
1662 return (frame_bytes - 2 * ch) / ch;
1663 case AV_CODEC_ID_MACE3:
1664 return 3 * frame_bytes / ch;
1665 case AV_CODEC_ID_MACE6:
1666 return 6 * frame_bytes / ch;
1667 case AV_CODEC_ID_PCM_LXF:
1668 return 2 * (frame_bytes / (5 * ch));
1669 case AV_CODEC_ID_IAC:
1670 case AV_CODEC_ID_IMC:
1671 return 4 * frame_bytes / ch;
1672 }
1673
1674 if (tag) {
1675 /* calc from frame_bytes, channels, and codec_tag */
1676 if (id == AV_CODEC_ID_SOL_DPCM) {
1677 if (tag == 3)
1678 return frame_bytes / ch;
1679 else
1680 return frame_bytes * 2 / ch;
1681 }
1682 }
1683
1684 if (ba > 0) {
1685 /* calc from frame_bytes, channels, and block_align */
1686 int blocks = frame_bytes / ba;
1687 switch (id) {
1688 case AV_CODEC_ID_ADPCM_IMA_WAV:
1689 if (bps < 2 || bps > 5)
1690 return 0;
1691 return blocks * (1 + (ba - 4 * ch) / (bps * ch) * 8);
1692 case AV_CODEC_ID_ADPCM_IMA_DK3:
1693 return blocks * (((ba - 16) * 2 / 3 * 4) / ch);
1694 case AV_CODEC_ID_ADPCM_IMA_DK4:
1695 return blocks * (1 + (ba - 4 * ch) * 2 / ch);
1696 case AV_CODEC_ID_ADPCM_IMA_RAD:
1697 return blocks * ((ba - 4 * ch) * 2 / ch);
1698 case AV_CODEC_ID_ADPCM_MS:
1699 return blocks * (2 + (ba - 7 * ch) * 2 / ch);
1700 case AV_CODEC_ID_ADPCM_MTAF:
1701 return blocks * (ba - 16) * 2 / ch;
1702 }
1703 }
1704
1705 if (bps > 0) {
1706 /* calc from frame_bytes, channels, and bits_per_coded_sample */
1707 switch (id) {
1708 case AV_CODEC_ID_PCM_DVD:
1709 if(bps<4 || frame_bytes<3)
1710 return 0;
1711 return 2 * ((frame_bytes - 3) / ((bps * 2 / 8) * ch));
1712 case AV_CODEC_ID_PCM_BLURAY:
1713 if(bps<4 || frame_bytes<4)
1714 return 0;
1715 return (frame_bytes - 4) / ((FFALIGN(ch, 2) * bps) / 8);
1716 case AV_CODEC_ID_S302M:
1717 return 2 * (frame_bytes / ((bps + 4) / 4)) / ch;
1718 }
1719 }
1720 }
1721 }
1722
1723 /* Fall back on using frame_size */
1724 if (frame_size > 1 && frame_bytes)
1725 return frame_size;
1726
1727 //For WMA we currently have no other means to calculate duration thus we
1728 //do it here by assuming CBR, which is true for all known cases.
1729 if (bitrate > 0 && frame_bytes > 0 && sr > 0 && ba > 1) {
1730 if (id == AV_CODEC_ID_WMAV1 || id == AV_CODEC_ID_WMAV2)
1731 return (frame_bytes * 8LL * sr) / bitrate;
1732 }
1733
1734 return 0;
1735 }
1736
av_get_audio_frame_duration(AVCodecContext * avctx,int frame_bytes)1737 int av_get_audio_frame_duration(AVCodecContext *avctx, int frame_bytes)
1738 {
1739 return get_audio_frame_duration(avctx->codec_id, avctx->sample_rate,
1740 avctx->channels, avctx->block_align,
1741 avctx->codec_tag, avctx->bits_per_coded_sample,
1742 avctx->bit_rate, avctx->extradata, avctx->frame_size,
1743 frame_bytes);
1744 }
1745
av_get_audio_frame_duration2(AVCodecParameters * par,int frame_bytes)1746 int av_get_audio_frame_duration2(AVCodecParameters *par, int frame_bytes)
1747 {
1748 return get_audio_frame_duration(par->codec_id, par->sample_rate,
1749 par->channels, par->block_align,
1750 par->codec_tag, par->bits_per_coded_sample,
1751 par->bit_rate, par->extradata, par->frame_size,
1752 frame_bytes);
1753 }
1754
1755 #if !HAVE_THREADS
ff_thread_init(AVCodecContext * s)1756 int ff_thread_init(AVCodecContext *s)
1757 {
1758 return -1;
1759 }
1760
1761 #endif
1762
av_xiphlacing(unsigned char * s,unsigned int v)1763 unsigned int av_xiphlacing(unsigned char *s, unsigned int v)
1764 {
1765 unsigned int n = 0;
1766
1767 while (v >= 0xff) {
1768 *s++ = 0xff;
1769 v -= 0xff;
1770 n++;
1771 }
1772 *s = v;
1773 n++;
1774 return n;
1775 }
1776
ff_match_2uint16(const uint16_t (* tab)[2],int size,int a,int b)1777 int ff_match_2uint16(const uint16_t(*tab)[2], int size, int a, int b)
1778 {
1779 int i;
1780 for (i = 0; i < size && !(tab[i][0] == a && tab[i][1] == b); i++) ;
1781 return i;
1782 }
1783
avcodec_get_hw_config(const AVCodec * codec,int index)1784 const AVCodecHWConfig *avcodec_get_hw_config(const AVCodec *codec, int index)
1785 {
1786 int i;
1787 if (!codec->hw_configs || index < 0)
1788 return NULL;
1789 for (i = 0; i <= index; i++)
1790 if (!codec->hw_configs[i])
1791 return NULL;
1792 return &codec->hw_configs[index]->public;
1793 }
1794
1795 #if FF_API_USER_VISIBLE_AVHWACCEL
av_hwaccel_next(const AVHWAccel * hwaccel)1796 AVHWAccel *av_hwaccel_next(const AVHWAccel *hwaccel)
1797 {
1798 return NULL;
1799 }
1800
av_register_hwaccel(AVHWAccel * hwaccel)1801 void av_register_hwaccel(AVHWAccel *hwaccel)
1802 {
1803 }
1804 #endif
1805
1806 #if FF_API_LOCKMGR
av_lockmgr_register(int (* cb)(void ** mutex,enum AVLockOp op))1807 int av_lockmgr_register(int (*cb)(void **mutex, enum AVLockOp op))
1808 {
1809 return 0;
1810 }
1811 #endif
1812
avpriv_toupper4(unsigned int x)1813 unsigned int avpriv_toupper4(unsigned int x)
1814 {
1815 return av_toupper(x & 0xFF) +
1816 (av_toupper((x >> 8) & 0xFF) << 8) +
1817 (av_toupper((x >> 16) & 0xFF) << 16) +
1818 ((unsigned)av_toupper((x >> 24) & 0xFF) << 24);
1819 }
1820
ff_thread_ref_frame(ThreadFrame * dst,ThreadFrame * src)1821 int ff_thread_ref_frame(ThreadFrame *dst, ThreadFrame *src)
1822 {
1823 int ret;
1824
1825 dst->owner[0] = src->owner[0];
1826 dst->owner[1] = src->owner[1];
1827
1828 ret = av_frame_ref(dst->f, src->f);
1829 if (ret < 0)
1830 return ret;
1831
1832 av_assert0(!dst->progress);
1833
1834 if (src->progress &&
1835 !(dst->progress = av_buffer_ref(src->progress))) {
1836 ff_thread_release_buffer(dst->owner[0], dst);
1837 return AVERROR(ENOMEM);
1838 }
1839
1840 return 0;
1841 }
1842
1843 #if !HAVE_THREADS
1844
ff_thread_get_format(AVCodecContext * avctx,const enum AVPixelFormat * fmt)1845 enum AVPixelFormat ff_thread_get_format(AVCodecContext *avctx, const enum AVPixelFormat *fmt)
1846 {
1847 return ff_get_format(avctx, fmt);
1848 }
1849
ff_thread_get_buffer(AVCodecContext * avctx,ThreadFrame * f,int flags)1850 int ff_thread_get_buffer(AVCodecContext *avctx, ThreadFrame *f, int flags)
1851 {
1852 f->owner[0] = f->owner[1] = avctx;
1853 return ff_get_buffer(avctx, f->f, flags);
1854 }
1855
ff_thread_release_buffer(AVCodecContext * avctx,ThreadFrame * f)1856 void ff_thread_release_buffer(AVCodecContext *avctx, ThreadFrame *f)
1857 {
1858 if (f->f)
1859 av_frame_unref(f->f);
1860 }
1861
ff_thread_finish_setup(AVCodecContext * avctx)1862 void ff_thread_finish_setup(AVCodecContext *avctx)
1863 {
1864 }
1865
ff_thread_report_progress(ThreadFrame * f,int progress,int field)1866 void ff_thread_report_progress(ThreadFrame *f, int progress, int field)
1867 {
1868 }
1869
ff_thread_await_progress(ThreadFrame * f,int progress,int field)1870 void ff_thread_await_progress(ThreadFrame *f, int progress, int field)
1871 {
1872 }
1873
ff_thread_can_start_frame(AVCodecContext * avctx)1874 int ff_thread_can_start_frame(AVCodecContext *avctx)
1875 {
1876 return 1;
1877 }
1878
ff_alloc_entries(AVCodecContext * avctx,int count)1879 int ff_alloc_entries(AVCodecContext *avctx, int count)
1880 {
1881 return 0;
1882 }
1883
ff_reset_entries(AVCodecContext * avctx)1884 void ff_reset_entries(AVCodecContext *avctx)
1885 {
1886 }
1887
ff_thread_await_progress2(AVCodecContext * avctx,int field,int thread,int shift)1888 void ff_thread_await_progress2(AVCodecContext *avctx, int field, int thread, int shift)
1889 {
1890 }
1891
ff_thread_report_progress2(AVCodecContext * avctx,int field,int thread,int n)1892 void ff_thread_report_progress2(AVCodecContext *avctx, int field, int thread, int n)
1893 {
1894 }
1895
1896 #endif
1897
avcodec_is_open(AVCodecContext * s)1898 int avcodec_is_open(AVCodecContext *s)
1899 {
1900 return !!s->internal;
1901 }
1902
avpriv_bprint_to_extradata(AVCodecContext * avctx,struct AVBPrint * buf)1903 int avpriv_bprint_to_extradata(AVCodecContext *avctx, struct AVBPrint *buf)
1904 {
1905 int ret;
1906 char *str;
1907
1908 ret = av_bprint_finalize(buf, &str);
1909 if (ret < 0)
1910 return ret;
1911 if (!av_bprint_is_complete(buf)) {
1912 av_free(str);
1913 return AVERROR(ENOMEM);
1914 }
1915
1916 avctx->extradata = str;
1917 /* Note: the string is NUL terminated (so extradata can be read as a
1918 * string), but the ending character is not accounted in the size (in
1919 * binary formats you are likely not supposed to mux that character). When
1920 * extradata is copied, it is also padded with AV_INPUT_BUFFER_PADDING_SIZE
1921 * zeros. */
1922 avctx->extradata_size = buf->len;
1923 return 0;
1924 }
1925
avpriv_find_start_code(const uint8_t * av_restrict p,const uint8_t * end,uint32_t * av_restrict state)1926 const uint8_t *avpriv_find_start_code(const uint8_t *av_restrict p,
1927 const uint8_t *end,
1928 uint32_t *av_restrict state)
1929 {
1930 int i;
1931
1932 av_assert0(p <= end);
1933 if (p >= end)
1934 return end;
1935
1936 for (i = 0; i < 3; i++) {
1937 uint32_t tmp = *state << 8;
1938 *state = tmp + *(p++);
1939 if (tmp == 0x100 || p == end)
1940 return p;
1941 }
1942
1943 while (p < end) {
1944 if (p[-1] > 1 ) p += 3;
1945 else if (p[-2] ) p += 2;
1946 else if (p[-3]|(p[-1]-1)) p++;
1947 else {
1948 p++;
1949 break;
1950 }
1951 }
1952
1953 p = FFMIN(p, end) - 4;
1954 *state = AV_RB32(p);
1955
1956 return p + 4;
1957 }
1958
av_cpb_properties_alloc(size_t * size)1959 AVCPBProperties *av_cpb_properties_alloc(size_t *size)
1960 {
1961 AVCPBProperties *props = av_mallocz(sizeof(AVCPBProperties));
1962 if (!props)
1963 return NULL;
1964
1965 if (size)
1966 *size = sizeof(*props);
1967
1968 props->vbv_delay = UINT64_MAX;
1969
1970 return props;
1971 }
1972
ff_add_cpb_side_data(AVCodecContext * avctx)1973 AVCPBProperties *ff_add_cpb_side_data(AVCodecContext *avctx)
1974 {
1975 AVPacketSideData *tmp;
1976 AVCPBProperties *props;
1977 size_t size;
1978
1979 props = av_cpb_properties_alloc(&size);
1980 if (!props)
1981 return NULL;
1982
1983 tmp = av_realloc_array(avctx->coded_side_data, avctx->nb_coded_side_data + 1, sizeof(*tmp));
1984 if (!tmp) {
1985 av_freep(&props);
1986 return NULL;
1987 }
1988
1989 avctx->coded_side_data = tmp;
1990 avctx->nb_coded_side_data++;
1991
1992 avctx->coded_side_data[avctx->nb_coded_side_data - 1].type = AV_PKT_DATA_CPB_PROPERTIES;
1993 avctx->coded_side_data[avctx->nb_coded_side_data - 1].data = (uint8_t*)props;
1994 avctx->coded_side_data[avctx->nb_coded_side_data - 1].size = size;
1995
1996 return props;
1997 }
1998
codec_parameters_reset(AVCodecParameters * par)1999 static void codec_parameters_reset(AVCodecParameters *par)
2000 {
2001 av_freep(&par->extradata);
2002
2003 memset(par, 0, sizeof(*par));
2004
2005 par->codec_type = AVMEDIA_TYPE_UNKNOWN;
2006 par->codec_id = AV_CODEC_ID_NONE;
2007 par->format = -1;
2008 par->field_order = AV_FIELD_UNKNOWN;
2009 par->color_range = AVCOL_RANGE_UNSPECIFIED;
2010 par->color_primaries = AVCOL_PRI_UNSPECIFIED;
2011 par->color_trc = AVCOL_TRC_UNSPECIFIED;
2012 par->color_space = AVCOL_SPC_UNSPECIFIED;
2013 par->chroma_location = AVCHROMA_LOC_UNSPECIFIED;
2014 par->sample_aspect_ratio = (AVRational){ 0, 1 };
2015 par->profile = FF_PROFILE_UNKNOWN;
2016 par->level = FF_LEVEL_UNKNOWN;
2017 }
2018
avcodec_parameters_alloc(void)2019 AVCodecParameters *avcodec_parameters_alloc(void)
2020 {
2021 AVCodecParameters *par = av_mallocz(sizeof(*par));
2022
2023 if (!par)
2024 return NULL;
2025 codec_parameters_reset(par);
2026 return par;
2027 }
2028
avcodec_parameters_free(AVCodecParameters ** ppar)2029 void avcodec_parameters_free(AVCodecParameters **ppar)
2030 {
2031 AVCodecParameters *par = *ppar;
2032
2033 if (!par)
2034 return;
2035 codec_parameters_reset(par);
2036
2037 av_freep(ppar);
2038 }
2039
avcodec_parameters_copy(AVCodecParameters * dst,const AVCodecParameters * src)2040 int avcodec_parameters_copy(AVCodecParameters *dst, const AVCodecParameters *src)
2041 {
2042 codec_parameters_reset(dst);
2043 memcpy(dst, src, sizeof(*dst));
2044
2045 dst->extradata = NULL;
2046 dst->extradata_size = 0;
2047 if (src->extradata) {
2048 dst->extradata = av_mallocz(src->extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);
2049 if (!dst->extradata)
2050 return AVERROR(ENOMEM);
2051 memcpy(dst->extradata, src->extradata, src->extradata_size);
2052 dst->extradata_size = src->extradata_size;
2053 }
2054
2055 return 0;
2056 }
2057
avcodec_parameters_from_context(AVCodecParameters * par,const AVCodecContext * codec)2058 int avcodec_parameters_from_context(AVCodecParameters *par,
2059 const AVCodecContext *codec)
2060 {
2061 codec_parameters_reset(par);
2062
2063 par->codec_type = codec->codec_type;
2064 par->codec_id = codec->codec_id;
2065 par->codec_tag = codec->codec_tag;
2066
2067 par->bit_rate = codec->bit_rate;
2068 par->bits_per_coded_sample = codec->bits_per_coded_sample;
2069 par->bits_per_raw_sample = codec->bits_per_raw_sample;
2070 par->profile = codec->profile;
2071 par->level = codec->level;
2072
2073 switch (par->codec_type) {
2074 case AVMEDIA_TYPE_VIDEO:
2075 par->format = codec->pix_fmt;
2076 par->width = codec->width;
2077 par->height = codec->height;
2078 par->field_order = codec->field_order;
2079 par->color_range = codec->color_range;
2080 par->color_primaries = codec->color_primaries;
2081 par->color_trc = codec->color_trc;
2082 par->color_space = codec->colorspace;
2083 par->chroma_location = codec->chroma_sample_location;
2084 par->sample_aspect_ratio = codec->sample_aspect_ratio;
2085 par->video_delay = codec->has_b_frames;
2086 break;
2087 case AVMEDIA_TYPE_AUDIO:
2088 par->format = codec->sample_fmt;
2089 par->channel_layout = codec->channel_layout;
2090 par->channels = codec->channels;
2091 par->sample_rate = codec->sample_rate;
2092 par->block_align = codec->block_align;
2093 par->frame_size = codec->frame_size;
2094 par->initial_padding = codec->initial_padding;
2095 par->trailing_padding = codec->trailing_padding;
2096 par->seek_preroll = codec->seek_preroll;
2097 break;
2098 case AVMEDIA_TYPE_SUBTITLE:
2099 par->width = codec->width;
2100 par->height = codec->height;
2101 break;
2102 }
2103
2104 if (codec->extradata) {
2105 par->extradata = av_mallocz(codec->extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);
2106 if (!par->extradata)
2107 return AVERROR(ENOMEM);
2108 memcpy(par->extradata, codec->extradata, codec->extradata_size);
2109 par->extradata_size = codec->extradata_size;
2110 }
2111
2112 return 0;
2113 }
2114
avcodec_parameters_to_context(AVCodecContext * codec,const AVCodecParameters * par)2115 int avcodec_parameters_to_context(AVCodecContext *codec,
2116 const AVCodecParameters *par)
2117 {
2118 codec->codec_type = par->codec_type;
2119 codec->codec_id = par->codec_id;
2120 codec->codec_tag = par->codec_tag;
2121
2122 codec->bit_rate = par->bit_rate;
2123 codec->bits_per_coded_sample = par->bits_per_coded_sample;
2124 codec->bits_per_raw_sample = par->bits_per_raw_sample;
2125 codec->profile = par->profile;
2126 codec->level = par->level;
2127
2128 switch (par->codec_type) {
2129 case AVMEDIA_TYPE_VIDEO:
2130 codec->pix_fmt = par->format;
2131 codec->width = par->width;
2132 codec->height = par->height;
2133 codec->field_order = par->field_order;
2134 codec->color_range = par->color_range;
2135 codec->color_primaries = par->color_primaries;
2136 codec->color_trc = par->color_trc;
2137 codec->colorspace = par->color_space;
2138 codec->chroma_sample_location = par->chroma_location;
2139 codec->sample_aspect_ratio = par->sample_aspect_ratio;
2140 codec->has_b_frames = par->video_delay;
2141 break;
2142 case AVMEDIA_TYPE_AUDIO:
2143 codec->sample_fmt = par->format;
2144 codec->channel_layout = par->channel_layout;
2145 codec->channels = par->channels;
2146 codec->sample_rate = par->sample_rate;
2147 codec->block_align = par->block_align;
2148 codec->frame_size = par->frame_size;
2149 codec->delay =
2150 codec->initial_padding = par->initial_padding;
2151 codec->trailing_padding = par->trailing_padding;
2152 codec->seek_preroll = par->seek_preroll;
2153 break;
2154 case AVMEDIA_TYPE_SUBTITLE:
2155 codec->width = par->width;
2156 codec->height = par->height;
2157 break;
2158 }
2159
2160 if (par->extradata) {
2161 av_freep(&codec->extradata);
2162 codec->extradata = av_mallocz(par->extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);
2163 if (!codec->extradata)
2164 return AVERROR(ENOMEM);
2165 memcpy(codec->extradata, par->extradata, par->extradata_size);
2166 codec->extradata_size = par->extradata_size;
2167 }
2168
2169 return 0;
2170 }
2171
ff_alloc_a53_sei(const AVFrame * frame,size_t prefix_len,void ** data,size_t * sei_size)2172 int ff_alloc_a53_sei(const AVFrame *frame, size_t prefix_len,
2173 void **data, size_t *sei_size)
2174 {
2175 AVFrameSideData *side_data = NULL;
2176 uint8_t *sei_data;
2177
2178 if (frame)
2179 side_data = av_frame_get_side_data(frame, AV_FRAME_DATA_A53_CC);
2180
2181 if (!side_data) {
2182 *data = NULL;
2183 return 0;
2184 }
2185
2186 *sei_size = side_data->size + 11;
2187 *data = av_mallocz(*sei_size + prefix_len);
2188 if (!*data)
2189 return AVERROR(ENOMEM);
2190 sei_data = (uint8_t*)*data + prefix_len;
2191
2192 // country code
2193 sei_data[0] = 181;
2194 sei_data[1] = 0;
2195 sei_data[2] = 49;
2196
2197 /**
2198 * 'GA94' is standard in North America for ATSC, but hard coding
2199 * this style may not be the right thing to do -- other formats
2200 * do exist. This information is not available in the side_data
2201 * so we are going with this right now.
2202 */
2203 AV_WL32(sei_data + 3, MKTAG('G', 'A', '9', '4'));
2204 sei_data[7] = 3;
2205 sei_data[8] = ((side_data->size/3) & 0x1f) | 0x40;
2206 sei_data[9] = 0;
2207
2208 memcpy(sei_data + 10, side_data->data, side_data->size);
2209
2210 sei_data[side_data->size+10] = 255;
2211
2212 return 0;
2213 }
2214
ff_guess_coded_bitrate(AVCodecContext * avctx)2215 int64_t ff_guess_coded_bitrate(AVCodecContext *avctx)
2216 {
2217 AVRational framerate = avctx->framerate;
2218 int bits_per_coded_sample = avctx->bits_per_coded_sample;
2219 int64_t bitrate;
2220
2221 if (!(framerate.num && framerate.den))
2222 framerate = av_inv_q(avctx->time_base);
2223 if (!(framerate.num && framerate.den))
2224 return 0;
2225
2226 if (!bits_per_coded_sample) {
2227 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(avctx->pix_fmt);
2228 bits_per_coded_sample = av_get_bits_per_pixel(desc);
2229 }
2230 bitrate = (int64_t)bits_per_coded_sample * avctx->width * avctx->height *
2231 framerate.num / framerate.den;
2232
2233 return bitrate;
2234 }
2235
ff_int_from_list_or_default(void * ctx,const char * val_name,int val,const int * array_valid_values,int default_value)2236 int ff_int_from_list_or_default(void *ctx, const char * val_name, int val,
2237 const int * array_valid_values, int default_value)
2238 {
2239 int i = 0, ref_val;
2240
2241 while (1) {
2242 ref_val = array_valid_values[i];
2243 if (ref_val == INT_MAX)
2244 break;
2245 if (val == ref_val)
2246 return val;
2247 i++;
2248 }
2249 /* val is not a valid value */
2250 av_log(ctx, AV_LOG_DEBUG,
2251 "%s %d are not supported. Set to default value : %d\n", val_name, val, default_value);
2252 return default_value;
2253 }
2254