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 "hwconfig.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 AVCodecInternal *avci;
555
556 if (avcodec_is_open(avctx))
557 return 0;
558
559 if (!codec && !avctx->codec) {
560 av_log(avctx, AV_LOG_ERROR, "No codec provided to avcodec_open2()\n");
561 return AVERROR(EINVAL);
562 }
563 if (codec && avctx->codec && codec != avctx->codec) {
564 av_log(avctx, AV_LOG_ERROR, "This AVCodecContext was allocated for %s, "
565 "but %s passed to avcodec_open2()\n", avctx->codec->name, codec->name);
566 return AVERROR(EINVAL);
567 }
568 if (!codec)
569 codec = avctx->codec;
570
571 if (avctx->extradata_size < 0 || avctx->extradata_size >= FF_MAX_EXTRADATA_SIZE)
572 return AVERROR(EINVAL);
573
574 if (options)
575 av_dict_copy(&tmp, *options, 0);
576
577 ff_lock_avcodec(avctx, codec);
578
579 avci = av_mallocz(sizeof(*avci));
580 if (!avci) {
581 ret = AVERROR(ENOMEM);
582 goto end;
583 }
584 avctx->internal = avci;
585
586 avci->to_free = av_frame_alloc();
587 avci->compat_decode_frame = av_frame_alloc();
588 avci->buffer_frame = av_frame_alloc();
589 avci->buffer_pkt = av_packet_alloc();
590 avci->ds.in_pkt = av_packet_alloc();
591 avci->last_pkt_props = av_packet_alloc();
592 if (!avci->to_free || !avci->compat_decode_frame ||
593 !avci->buffer_frame || !avci->buffer_pkt ||
594 !avci->ds.in_pkt || !avci->last_pkt_props) {
595 ret = AVERROR(ENOMEM);
596 goto free_and_end;
597 }
598
599 avci->skip_samples_multiplier = 1;
600
601 if (codec->priv_data_size > 0) {
602 if (!avctx->priv_data) {
603 avctx->priv_data = av_mallocz(codec->priv_data_size);
604 if (!avctx->priv_data) {
605 ret = AVERROR(ENOMEM);
606 goto end;
607 }
608 if (codec->priv_class) {
609 *(const AVClass **)avctx->priv_data = codec->priv_class;
610 av_opt_set_defaults(avctx->priv_data);
611 }
612 }
613 if (codec->priv_class && (ret = av_opt_set_dict(avctx->priv_data, &tmp)) < 0)
614 goto free_and_end;
615 } else {
616 avctx->priv_data = NULL;
617 }
618 if ((ret = av_opt_set_dict(avctx, &tmp)) < 0)
619 goto free_and_end;
620
621 if (avctx->codec_whitelist && av_match_list(codec->name, avctx->codec_whitelist, ',') <= 0) {
622 av_log(avctx, AV_LOG_ERROR, "Codec (%s) not on whitelist \'%s\'\n", codec->name, avctx->codec_whitelist);
623 ret = AVERROR(EINVAL);
624 goto free_and_end;
625 }
626
627 // only call ff_set_dimensions() for non H.264/VP6F/DXV codecs so as not to overwrite previously setup dimensions
628 if (!(avctx->coded_width && avctx->coded_height && avctx->width && avctx->height &&
629 (avctx->codec_id == AV_CODEC_ID_H264 || avctx->codec_id == AV_CODEC_ID_VP6F || avctx->codec_id == AV_CODEC_ID_DXV))) {
630 if (avctx->coded_width && avctx->coded_height)
631 ret = ff_set_dimensions(avctx, avctx->coded_width, avctx->coded_height);
632 else if (avctx->width && avctx->height)
633 ret = ff_set_dimensions(avctx, avctx->width, avctx->height);
634 if (ret < 0)
635 goto free_and_end;
636 }
637
638 if ((avctx->coded_width || avctx->coded_height || avctx->width || avctx->height)
639 && ( av_image_check_size2(avctx->coded_width, avctx->coded_height, avctx->max_pixels, AV_PIX_FMT_NONE, 0, avctx) < 0
640 || av_image_check_size2(avctx->width, avctx->height, avctx->max_pixels, AV_PIX_FMT_NONE, 0, avctx) < 0)) {
641 av_log(avctx, AV_LOG_WARNING, "Ignoring invalid width/height values\n");
642 ff_set_dimensions(avctx, 0, 0);
643 }
644
645 if (avctx->width > 0 && avctx->height > 0) {
646 if (av_image_check_sar(avctx->width, avctx->height,
647 avctx->sample_aspect_ratio) < 0) {
648 av_log(avctx, AV_LOG_WARNING, "ignoring invalid SAR: %u/%u\n",
649 avctx->sample_aspect_ratio.num,
650 avctx->sample_aspect_ratio.den);
651 avctx->sample_aspect_ratio = (AVRational){ 0, 1 };
652 }
653 }
654
655 /* if the decoder init function was already called previously,
656 * free the already allocated subtitle_header before overwriting it */
657 if (av_codec_is_decoder(codec))
658 av_freep(&avctx->subtitle_header);
659
660 if (avctx->channels > FF_SANE_NB_CHANNELS || avctx->channels < 0) {
661 av_log(avctx, AV_LOG_ERROR, "Too many or invalid channels: %d\n", avctx->channels);
662 ret = AVERROR(EINVAL);
663 goto free_and_end;
664 }
665 if (avctx->sample_rate < 0) {
666 av_log(avctx, AV_LOG_ERROR, "Invalid sample rate: %d\n", avctx->sample_rate);
667 ret = AVERROR(EINVAL);
668 goto free_and_end;
669 }
670 if (avctx->block_align < 0) {
671 av_log(avctx, AV_LOG_ERROR, "Invalid block align: %d\n", avctx->block_align);
672 ret = AVERROR(EINVAL);
673 goto free_and_end;
674 }
675
676 avctx->codec = codec;
677 if ((avctx->codec_type == AVMEDIA_TYPE_UNKNOWN || avctx->codec_type == codec->type) &&
678 avctx->codec_id == AV_CODEC_ID_NONE) {
679 avctx->codec_type = codec->type;
680 avctx->codec_id = codec->id;
681 }
682 if (avctx->codec_id != codec->id || (avctx->codec_type != codec->type
683 && avctx->codec_type != AVMEDIA_TYPE_ATTACHMENT)) {
684 av_log(avctx, AV_LOG_ERROR, "Codec type or id mismatches\n");
685 ret = AVERROR(EINVAL);
686 goto free_and_end;
687 }
688 avctx->frame_number = 0;
689 avctx->codec_descriptor = avcodec_descriptor_get(avctx->codec_id);
690
691 if ((avctx->codec->capabilities & AV_CODEC_CAP_EXPERIMENTAL) &&
692 avctx->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
693 const char *codec_string = av_codec_is_encoder(codec) ? "encoder" : "decoder";
694 AVCodec *codec2;
695 av_log(avctx, AV_LOG_ERROR,
696 "The %s '%s' is experimental but experimental codecs are not enabled, "
697 "add '-strict %d' if you want to use it.\n",
698 codec_string, codec->name, FF_COMPLIANCE_EXPERIMENTAL);
699 codec2 = av_codec_is_encoder(codec) ? avcodec_find_encoder(codec->id) : avcodec_find_decoder(codec->id);
700 if (!(codec2->capabilities & AV_CODEC_CAP_EXPERIMENTAL))
701 av_log(avctx, AV_LOG_ERROR, "Alternatively use the non experimental %s '%s'.\n",
702 codec_string, codec2->name);
703 ret = AVERROR_EXPERIMENTAL;
704 goto free_and_end;
705 }
706
707 if (avctx->codec_type == AVMEDIA_TYPE_AUDIO &&
708 (!avctx->time_base.num || !avctx->time_base.den)) {
709 avctx->time_base.num = 1;
710 avctx->time_base.den = avctx->sample_rate;
711 }
712
713 if (!HAVE_THREADS)
714 av_log(avctx, AV_LOG_WARNING, "Warning: not compiled with thread support, using thread emulation\n");
715
716 if (CONFIG_FRAME_THREAD_ENCODER && av_codec_is_encoder(avctx->codec)) {
717 ff_unlock_avcodec(codec); //we will instantiate a few encoders thus kick the counter to prevent false detection of a problem
718 ret = ff_frame_thread_encoder_init(avctx, options ? *options : NULL);
719 ff_lock_avcodec(avctx, codec);
720 if (ret < 0)
721 goto free_and_end;
722 }
723
724 if (av_codec_is_decoder(avctx->codec)) {
725 ret = ff_decode_bsfs_init(avctx);
726 if (ret < 0)
727 goto free_and_end;
728 }
729
730 if (HAVE_THREADS
731 && !(avci->frame_thread_encoder && (avctx->active_thread_type&FF_THREAD_FRAME))) {
732 ret = ff_thread_init(avctx);
733 if (ret < 0) {
734 goto free_and_end;
735 }
736 }
737 if (!HAVE_THREADS && !(codec->capabilities & AV_CODEC_CAP_AUTO_THREADS))
738 avctx->thread_count = 1;
739
740 if (avctx->codec->max_lowres < avctx->lowres || avctx->lowres < 0) {
741 av_log(avctx, AV_LOG_WARNING, "The maximum value for lowres supported by the decoder is %d\n",
742 avctx->codec->max_lowres);
743 avctx->lowres = avctx->codec->max_lowres;
744 }
745
746 if (av_codec_is_encoder(avctx->codec)) {
747 int i;
748 #if FF_API_CODED_FRAME
749 FF_DISABLE_DEPRECATION_WARNINGS
750 avctx->coded_frame = av_frame_alloc();
751 if (!avctx->coded_frame) {
752 ret = AVERROR(ENOMEM);
753 goto free_and_end;
754 }
755 FF_ENABLE_DEPRECATION_WARNINGS
756 #endif
757
758 if (avctx->time_base.num <= 0 || avctx->time_base.den <= 0) {
759 av_log(avctx, AV_LOG_ERROR, "The encoder timebase is not set.\n");
760 ret = AVERROR(EINVAL);
761 goto free_and_end;
762 }
763
764 if (avctx->codec->sample_fmts) {
765 for (i = 0; avctx->codec->sample_fmts[i] != AV_SAMPLE_FMT_NONE; i++) {
766 if (avctx->sample_fmt == avctx->codec->sample_fmts[i])
767 break;
768 if (avctx->channels == 1 &&
769 av_get_planar_sample_fmt(avctx->sample_fmt) ==
770 av_get_planar_sample_fmt(avctx->codec->sample_fmts[i])) {
771 avctx->sample_fmt = avctx->codec->sample_fmts[i];
772 break;
773 }
774 }
775 if (avctx->codec->sample_fmts[i] == AV_SAMPLE_FMT_NONE) {
776 char buf[128];
777 snprintf(buf, sizeof(buf), "%d", avctx->sample_fmt);
778 av_log(avctx, AV_LOG_ERROR, "Specified sample format %s is invalid or not supported\n",
779 (char *)av_x_if_null(av_get_sample_fmt_name(avctx->sample_fmt), buf));
780 ret = AVERROR(EINVAL);
781 goto free_and_end;
782 }
783 }
784 if (avctx->codec->pix_fmts) {
785 for (i = 0; avctx->codec->pix_fmts[i] != AV_PIX_FMT_NONE; i++)
786 if (avctx->pix_fmt == avctx->codec->pix_fmts[i])
787 break;
788 if (avctx->codec->pix_fmts[i] == AV_PIX_FMT_NONE
789 && !((avctx->codec_id == AV_CODEC_ID_MJPEG || avctx->codec_id == AV_CODEC_ID_LJPEG)
790 && avctx->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL)) {
791 char buf[128];
792 snprintf(buf, sizeof(buf), "%d", avctx->pix_fmt);
793 av_log(avctx, AV_LOG_ERROR, "Specified pixel format %s is invalid or not supported\n",
794 (char *)av_x_if_null(av_get_pix_fmt_name(avctx->pix_fmt), buf));
795 ret = AVERROR(EINVAL);
796 goto free_and_end;
797 }
798 if (avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ420P ||
799 avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ411P ||
800 avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ422P ||
801 avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ440P ||
802 avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ444P)
803 avctx->color_range = AVCOL_RANGE_JPEG;
804 }
805 if (avctx->codec->supported_samplerates) {
806 for (i = 0; avctx->codec->supported_samplerates[i] != 0; i++)
807 if (avctx->sample_rate == avctx->codec->supported_samplerates[i])
808 break;
809 if (avctx->codec->supported_samplerates[i] == 0) {
810 av_log(avctx, AV_LOG_ERROR, "Specified sample rate %d is not supported\n",
811 avctx->sample_rate);
812 ret = AVERROR(EINVAL);
813 goto free_and_end;
814 }
815 }
816 if (avctx->sample_rate < 0) {
817 av_log(avctx, AV_LOG_ERROR, "Specified sample rate %d is not supported\n",
818 avctx->sample_rate);
819 ret = AVERROR(EINVAL);
820 goto free_and_end;
821 }
822 if (avctx->codec->channel_layouts) {
823 if (!avctx->channel_layout) {
824 av_log(avctx, AV_LOG_WARNING, "Channel layout not specified\n");
825 } else {
826 for (i = 0; avctx->codec->channel_layouts[i] != 0; i++)
827 if (avctx->channel_layout == avctx->codec->channel_layouts[i])
828 break;
829 if (avctx->codec->channel_layouts[i] == 0) {
830 char buf[512];
831 av_get_channel_layout_string(buf, sizeof(buf), -1, avctx->channel_layout);
832 av_log(avctx, AV_LOG_ERROR, "Specified channel layout '%s' is not supported\n", buf);
833 ret = AVERROR(EINVAL);
834 goto free_and_end;
835 }
836 }
837 }
838 if (avctx->channel_layout && avctx->channels) {
839 int channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
840 if (channels != avctx->channels) {
841 char buf[512];
842 av_get_channel_layout_string(buf, sizeof(buf), -1, avctx->channel_layout);
843 av_log(avctx, AV_LOG_ERROR,
844 "Channel layout '%s' with %d channels does not match number of specified channels %d\n",
845 buf, channels, avctx->channels);
846 ret = AVERROR(EINVAL);
847 goto free_and_end;
848 }
849 } else if (avctx->channel_layout) {
850 avctx->channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
851 }
852 if (avctx->channels < 0) {
853 av_log(avctx, AV_LOG_ERROR, "Specified number of channels %d is not supported\n",
854 avctx->channels);
855 ret = AVERROR(EINVAL);
856 goto free_and_end;
857 }
858 if(avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
859 pixdesc = av_pix_fmt_desc_get(avctx->pix_fmt);
860 if ( avctx->bits_per_raw_sample < 0
861 || (avctx->bits_per_raw_sample > 8 && pixdesc->comp[0].depth <= 8)) {
862 av_log(avctx, AV_LOG_WARNING, "Specified bit depth %d not possible with the specified pixel formats depth %d\n",
863 avctx->bits_per_raw_sample, pixdesc->comp[0].depth);
864 avctx->bits_per_raw_sample = pixdesc->comp[0].depth;
865 }
866 if (avctx->width <= 0 || avctx->height <= 0) {
867 av_log(avctx, AV_LOG_ERROR, "dimensions not set\n");
868 ret = AVERROR(EINVAL);
869 goto free_and_end;
870 }
871 }
872 if ( (avctx->codec_type == AVMEDIA_TYPE_VIDEO || avctx->codec_type == AVMEDIA_TYPE_AUDIO)
873 && avctx->bit_rate>0 && avctx->bit_rate<1000) {
874 av_log(avctx, AV_LOG_WARNING, "Bitrate %"PRId64" is extremely low, maybe you mean %"PRId64"k\n", avctx->bit_rate, avctx->bit_rate);
875 }
876
877 if (!avctx->rc_initial_buffer_occupancy)
878 avctx->rc_initial_buffer_occupancy = avctx->rc_buffer_size * 3LL / 4;
879
880 if (avctx->ticks_per_frame && avctx->time_base.num &&
881 avctx->ticks_per_frame > INT_MAX / avctx->time_base.num) {
882 av_log(avctx, AV_LOG_ERROR,
883 "ticks_per_frame %d too large for the timebase %d/%d.",
884 avctx->ticks_per_frame,
885 avctx->time_base.num,
886 avctx->time_base.den);
887 goto free_and_end;
888 }
889
890 if (avctx->hw_frames_ctx) {
891 AVHWFramesContext *frames_ctx = (AVHWFramesContext*)avctx->hw_frames_ctx->data;
892 if (frames_ctx->format != avctx->pix_fmt) {
893 av_log(avctx, AV_LOG_ERROR,
894 "Mismatching AVCodecContext.pix_fmt and AVHWFramesContext.format\n");
895 ret = AVERROR(EINVAL);
896 goto free_and_end;
897 }
898 if (avctx->sw_pix_fmt != AV_PIX_FMT_NONE &&
899 avctx->sw_pix_fmt != frames_ctx->sw_format) {
900 av_log(avctx, AV_LOG_ERROR,
901 "Mismatching AVCodecContext.sw_pix_fmt (%s) "
902 "and AVHWFramesContext.sw_format (%s)\n",
903 av_get_pix_fmt_name(avctx->sw_pix_fmt),
904 av_get_pix_fmt_name(frames_ctx->sw_format));
905 ret = AVERROR(EINVAL);
906 goto free_and_end;
907 }
908 avctx->sw_pix_fmt = frames_ctx->sw_format;
909 }
910 }
911
912 avctx->pts_correction_num_faulty_pts =
913 avctx->pts_correction_num_faulty_dts = 0;
914 avctx->pts_correction_last_pts =
915 avctx->pts_correction_last_dts = INT64_MIN;
916
917 if ( !CONFIG_GRAY && avctx->flags & AV_CODEC_FLAG_GRAY
918 && avctx->codec_descriptor->type == AVMEDIA_TYPE_VIDEO)
919 av_log(avctx, AV_LOG_WARNING,
920 "gray decoding requested but not enabled at configuration time\n");
921 if (avctx->flags2 & AV_CODEC_FLAG2_EXPORT_MVS) {
922 avctx->export_side_data |= AV_CODEC_EXPORT_DATA_MVS;
923 }
924
925 if ( avctx->codec->init && (!(avctx->active_thread_type&FF_THREAD_FRAME)
926 || avci->frame_thread_encoder)) {
927 ret = avctx->codec->init(avctx);
928 if (ret < 0) {
929 goto free_and_end;
930 }
931 codec_init_ok = 1;
932 }
933
934 ret=0;
935
936 if (av_codec_is_decoder(avctx->codec)) {
937 if (!avctx->bit_rate)
938 avctx->bit_rate = get_bit_rate(avctx);
939 /* validate channel layout from the decoder */
940 if (avctx->channel_layout) {
941 int channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
942 if (!avctx->channels)
943 avctx->channels = channels;
944 else if (channels != avctx->channels) {
945 char buf[512];
946 av_get_channel_layout_string(buf, sizeof(buf), -1, avctx->channel_layout);
947 av_log(avctx, AV_LOG_WARNING,
948 "Channel layout '%s' with %d channels does not match specified number of channels %d: "
949 "ignoring specified channel layout\n",
950 buf, channels, avctx->channels);
951 avctx->channel_layout = 0;
952 }
953 }
954 if (avctx->channels && avctx->channels < 0 ||
955 avctx->channels > FF_SANE_NB_CHANNELS) {
956 ret = AVERROR(EINVAL);
957 goto free_and_end;
958 }
959 if (avctx->bits_per_coded_sample < 0) {
960 ret = AVERROR(EINVAL);
961 goto free_and_end;
962 }
963 if (avctx->sub_charenc) {
964 if (avctx->codec_type != AVMEDIA_TYPE_SUBTITLE) {
965 av_log(avctx, AV_LOG_ERROR, "Character encoding is only "
966 "supported with subtitles codecs\n");
967 ret = AVERROR(EINVAL);
968 goto free_and_end;
969 } else if (avctx->codec_descriptor->props & AV_CODEC_PROP_BITMAP_SUB) {
970 av_log(avctx, AV_LOG_WARNING, "Codec '%s' is bitmap-based, "
971 "subtitles character encoding will be ignored\n",
972 avctx->codec_descriptor->name);
973 avctx->sub_charenc_mode = FF_SUB_CHARENC_MODE_DO_NOTHING;
974 } else {
975 /* input character encoding is set for a text based subtitle
976 * codec at this point */
977 if (avctx->sub_charenc_mode == FF_SUB_CHARENC_MODE_AUTOMATIC)
978 avctx->sub_charenc_mode = FF_SUB_CHARENC_MODE_PRE_DECODER;
979
980 if (avctx->sub_charenc_mode == FF_SUB_CHARENC_MODE_PRE_DECODER) {
981 #if CONFIG_ICONV
982 iconv_t cd = iconv_open("UTF-8", avctx->sub_charenc);
983 if (cd == (iconv_t)-1) {
984 ret = AVERROR(errno);
985 av_log(avctx, AV_LOG_ERROR, "Unable to open iconv context "
986 "with input character encoding \"%s\"\n", avctx->sub_charenc);
987 goto free_and_end;
988 }
989 iconv_close(cd);
990 #else
991 av_log(avctx, AV_LOG_ERROR, "Character encoding subtitles "
992 "conversion needs a libavcodec built with iconv support "
993 "for this codec\n");
994 ret = AVERROR(ENOSYS);
995 goto free_and_end;
996 #endif
997 }
998 }
999 }
1000
1001 #if FF_API_AVCTX_TIMEBASE
1002 if (avctx->framerate.num > 0 && avctx->framerate.den > 0)
1003 avctx->time_base = av_inv_q(av_mul_q(avctx->framerate, (AVRational){avctx->ticks_per_frame, 1}));
1004 #endif
1005 }
1006 if (codec->priv_data_size > 0 && avctx->priv_data && codec->priv_class) {
1007 av_assert0(*(const AVClass **)avctx->priv_data == codec->priv_class);
1008 }
1009
1010 end:
1011 ff_unlock_avcodec(codec);
1012 if (options) {
1013 av_dict_free(options);
1014 *options = tmp;
1015 }
1016
1017 return ret;
1018 free_and_end:
1019 if (avctx->codec && avctx->codec->close &&
1020 (codec_init_ok ||
1021 (avctx->codec->caps_internal & FF_CODEC_CAP_INIT_CLEANUP)))
1022 avctx->codec->close(avctx);
1023
1024 if (HAVE_THREADS && avci->thread_ctx)
1025 ff_thread_free(avctx);
1026
1027 if (codec->priv_class && codec->priv_data_size)
1028 av_opt_free(avctx->priv_data);
1029 av_opt_free(avctx);
1030
1031 #if FF_API_CODED_FRAME
1032 FF_DISABLE_DEPRECATION_WARNINGS
1033 av_frame_free(&avctx->coded_frame);
1034 FF_ENABLE_DEPRECATION_WARNINGS
1035 #endif
1036
1037 av_dict_free(&tmp);
1038 av_freep(&avctx->priv_data);
1039 av_freep(&avctx->subtitle_header);
1040 if (avci) {
1041 av_frame_free(&avci->to_free);
1042 av_frame_free(&avci->compat_decode_frame);
1043 av_frame_free(&avci->buffer_frame);
1044 av_packet_free(&avci->buffer_pkt);
1045 av_packet_free(&avci->last_pkt_props);
1046
1047 av_packet_free(&avci->ds.in_pkt);
1048 av_bsf_free(&avci->bsf);
1049
1050 av_buffer_unref(&avci->pool);
1051 }
1052 av_freep(&avci);
1053 avctx->internal = NULL;
1054 avctx->codec = NULL;
1055 goto end;
1056 }
1057
avcodec_flush_buffers(AVCodecContext * avctx)1058 void avcodec_flush_buffers(AVCodecContext *avctx)
1059 {
1060 AVCodecInternal *avci = avctx->internal;
1061
1062 if (av_codec_is_encoder(avctx->codec)) {
1063 int caps = avctx->codec->capabilities;
1064
1065 if (!(caps & AV_CODEC_CAP_ENCODER_FLUSH)) {
1066 // Only encoders that explicitly declare support for it can be
1067 // flushed. Otherwise, this is a no-op.
1068 av_log(avctx, AV_LOG_WARNING, "Ignoring attempt to flush encoder "
1069 "that doesn't support it\n");
1070 return;
1071 }
1072
1073 // We haven't implemented flushing for frame-threaded encoders.
1074 av_assert0(!(caps & AV_CODEC_CAP_FRAME_THREADS));
1075 }
1076
1077 avci->draining = 0;
1078 avci->draining_done = 0;
1079 avci->nb_draining_errors = 0;
1080 av_frame_unref(avci->buffer_frame);
1081 av_frame_unref(avci->compat_decode_frame);
1082 av_packet_unref(avci->buffer_pkt);
1083 avci->buffer_pkt_valid = 0;
1084
1085 av_packet_unref(avci->ds.in_pkt);
1086
1087 if (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME)
1088 ff_thread_flush(avctx);
1089 else if (avctx->codec->flush)
1090 avctx->codec->flush(avctx);
1091
1092 avctx->pts_correction_last_pts =
1093 avctx->pts_correction_last_dts = INT64_MIN;
1094
1095 if (av_codec_is_decoder(avctx->codec))
1096 av_bsf_flush(avci->bsf);
1097
1098 if (!avctx->refcounted_frames)
1099 av_frame_unref(avci->to_free);
1100 }
1101
avsubtitle_free(AVSubtitle * sub)1102 void avsubtitle_free(AVSubtitle *sub)
1103 {
1104 int i;
1105
1106 for (i = 0; i < sub->num_rects; i++) {
1107 av_freep(&sub->rects[i]->data[0]);
1108 av_freep(&sub->rects[i]->data[1]);
1109 av_freep(&sub->rects[i]->data[2]);
1110 av_freep(&sub->rects[i]->data[3]);
1111 av_freep(&sub->rects[i]->text);
1112 av_freep(&sub->rects[i]->ass);
1113 av_freep(&sub->rects[i]);
1114 }
1115
1116 av_freep(&sub->rects);
1117
1118 memset(sub, 0, sizeof(*sub));
1119 }
1120
avcodec_close(AVCodecContext * avctx)1121 av_cold int avcodec_close(AVCodecContext *avctx)
1122 {
1123 int i;
1124
1125 if (!avctx)
1126 return 0;
1127
1128 if (avcodec_is_open(avctx)) {
1129 if (CONFIG_FRAME_THREAD_ENCODER &&
1130 avctx->internal->frame_thread_encoder && avctx->thread_count > 1) {
1131 ff_frame_thread_encoder_free(avctx);
1132 }
1133 if (HAVE_THREADS && avctx->internal->thread_ctx)
1134 ff_thread_free(avctx);
1135 if (avctx->codec && avctx->codec->close)
1136 avctx->codec->close(avctx);
1137 avctx->internal->byte_buffer_size = 0;
1138 av_freep(&avctx->internal->byte_buffer);
1139 av_frame_free(&avctx->internal->to_free);
1140 av_frame_free(&avctx->internal->compat_decode_frame);
1141 av_frame_free(&avctx->internal->buffer_frame);
1142 av_packet_free(&avctx->internal->buffer_pkt);
1143 av_packet_free(&avctx->internal->last_pkt_props);
1144
1145 av_packet_free(&avctx->internal->ds.in_pkt);
1146
1147 av_buffer_unref(&avctx->internal->pool);
1148
1149 if (avctx->hwaccel && avctx->hwaccel->uninit)
1150 avctx->hwaccel->uninit(avctx);
1151 av_freep(&avctx->internal->hwaccel_priv_data);
1152
1153 av_bsf_free(&avctx->internal->bsf);
1154
1155 av_freep(&avctx->internal);
1156 }
1157
1158 for (i = 0; i < avctx->nb_coded_side_data; i++)
1159 av_freep(&avctx->coded_side_data[i].data);
1160 av_freep(&avctx->coded_side_data);
1161 avctx->nb_coded_side_data = 0;
1162
1163 av_buffer_unref(&avctx->hw_frames_ctx);
1164 av_buffer_unref(&avctx->hw_device_ctx);
1165
1166 if (avctx->priv_data && avctx->codec && avctx->codec->priv_class)
1167 av_opt_free(avctx->priv_data);
1168 av_opt_free(avctx);
1169 av_freep(&avctx->priv_data);
1170 if (av_codec_is_encoder(avctx->codec)) {
1171 av_freep(&avctx->extradata);
1172 #if FF_API_CODED_FRAME
1173 FF_DISABLE_DEPRECATION_WARNINGS
1174 av_frame_free(&avctx->coded_frame);
1175 FF_ENABLE_DEPRECATION_WARNINGS
1176 #endif
1177 }
1178 avctx->codec = NULL;
1179 avctx->active_thread_type = 0;
1180
1181 return 0;
1182 }
1183
avcodec_get_name(enum AVCodecID id)1184 const char *avcodec_get_name(enum AVCodecID id)
1185 {
1186 const AVCodecDescriptor *cd;
1187 AVCodec *codec;
1188
1189 if (id == AV_CODEC_ID_NONE)
1190 return "none";
1191 cd = avcodec_descriptor_get(id);
1192 if (cd)
1193 return cd->name;
1194 av_log(NULL, AV_LOG_WARNING, "Codec 0x%x is not in the full list.\n", id);
1195 codec = avcodec_find_decoder(id);
1196 if (codec)
1197 return codec->name;
1198 codec = avcodec_find_encoder(id);
1199 if (codec)
1200 return codec->name;
1201 return "unknown_codec";
1202 }
1203
av_get_codec_tag_string(char * buf,size_t buf_size,unsigned int codec_tag)1204 size_t av_get_codec_tag_string(char *buf, size_t buf_size, unsigned int codec_tag)
1205 {
1206 int i, len, ret = 0;
1207
1208 #define TAG_PRINT(x) \
1209 (((x) >= '0' && (x) <= '9') || \
1210 ((x) >= 'a' && (x) <= 'z') || ((x) >= 'A' && (x) <= 'Z') || \
1211 ((x) == '.' || (x) == ' ' || (x) == '-' || (x) == '_'))
1212
1213 for (i = 0; i < 4; i++) {
1214 len = snprintf(buf, buf_size,
1215 TAG_PRINT(codec_tag & 0xFF) ? "%c" : "[%d]", codec_tag & 0xFF);
1216 buf += len;
1217 buf_size = buf_size > len ? buf_size - len : 0;
1218 ret += len;
1219 codec_tag >>= 8;
1220 }
1221 return ret;
1222 }
1223
avcodec_string(char * buf,int buf_size,AVCodecContext * enc,int encode)1224 void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)
1225 {
1226 const char *codec_type;
1227 const char *codec_name;
1228 const char *profile = NULL;
1229 int64_t bitrate;
1230 int new_line = 0;
1231 AVRational display_aspect_ratio;
1232 const char *separator = enc->dump_separator ? (const char *)enc->dump_separator : ", ";
1233
1234 if (!buf || buf_size <= 0)
1235 return;
1236 codec_type = av_get_media_type_string(enc->codec_type);
1237 codec_name = avcodec_get_name(enc->codec_id);
1238 profile = avcodec_profile_name(enc->codec_id, enc->profile);
1239
1240 snprintf(buf, buf_size, "%s: %s", codec_type ? codec_type : "unknown",
1241 codec_name);
1242 buf[0] ^= 'a' ^ 'A'; /* first letter in uppercase */
1243
1244 if (enc->codec && strcmp(enc->codec->name, codec_name))
1245 snprintf(buf + strlen(buf), buf_size - strlen(buf), " (%s)", enc->codec->name);
1246
1247 if (profile)
1248 snprintf(buf + strlen(buf), buf_size - strlen(buf), " (%s)", profile);
1249 if ( enc->codec_type == AVMEDIA_TYPE_VIDEO
1250 && av_log_get_level() >= AV_LOG_VERBOSE
1251 && enc->refs)
1252 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1253 ", %d reference frame%s",
1254 enc->refs, enc->refs > 1 ? "s" : "");
1255
1256 if (enc->codec_tag)
1257 snprintf(buf + strlen(buf), buf_size - strlen(buf), " (%s / 0x%04X)",
1258 av_fourcc2str(enc->codec_tag), enc->codec_tag);
1259
1260 switch (enc->codec_type) {
1261 case AVMEDIA_TYPE_VIDEO:
1262 {
1263 char detail[256] = "(";
1264
1265 av_strlcat(buf, separator, buf_size);
1266
1267 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1268 "%s", enc->pix_fmt == AV_PIX_FMT_NONE ? "none" :
1269 av_get_pix_fmt_name(enc->pix_fmt));
1270 if (enc->bits_per_raw_sample && enc->pix_fmt != AV_PIX_FMT_NONE &&
1271 enc->bits_per_raw_sample < av_pix_fmt_desc_get(enc->pix_fmt)->comp[0].depth)
1272 av_strlcatf(detail, sizeof(detail), "%d bpc, ", enc->bits_per_raw_sample);
1273 if (enc->color_range != AVCOL_RANGE_UNSPECIFIED)
1274 av_strlcatf(detail, sizeof(detail), "%s, ",
1275 av_color_range_name(enc->color_range));
1276
1277 if (enc->colorspace != AVCOL_SPC_UNSPECIFIED ||
1278 enc->color_primaries != AVCOL_PRI_UNSPECIFIED ||
1279 enc->color_trc != AVCOL_TRC_UNSPECIFIED) {
1280 if (enc->colorspace != (int)enc->color_primaries ||
1281 enc->colorspace != (int)enc->color_trc) {
1282 new_line = 1;
1283 av_strlcatf(detail, sizeof(detail), "%s/%s/%s, ",
1284 av_color_space_name(enc->colorspace),
1285 av_color_primaries_name(enc->color_primaries),
1286 av_color_transfer_name(enc->color_trc));
1287 } else
1288 av_strlcatf(detail, sizeof(detail), "%s, ",
1289 av_get_colorspace_name(enc->colorspace));
1290 }
1291
1292 if (enc->field_order != AV_FIELD_UNKNOWN) {
1293 const char *field_order = "progressive";
1294 if (enc->field_order == AV_FIELD_TT)
1295 field_order = "top first";
1296 else if (enc->field_order == AV_FIELD_BB)
1297 field_order = "bottom first";
1298 else if (enc->field_order == AV_FIELD_TB)
1299 field_order = "top coded first (swapped)";
1300 else if (enc->field_order == AV_FIELD_BT)
1301 field_order = "bottom coded first (swapped)";
1302
1303 av_strlcatf(detail, sizeof(detail), "%s, ", field_order);
1304 }
1305
1306 if (av_log_get_level() >= AV_LOG_VERBOSE &&
1307 enc->chroma_sample_location != AVCHROMA_LOC_UNSPECIFIED)
1308 av_strlcatf(detail, sizeof(detail), "%s, ",
1309 av_chroma_location_name(enc->chroma_sample_location));
1310
1311 if (strlen(detail) > 1) {
1312 detail[strlen(detail) - 2] = 0;
1313 av_strlcatf(buf, buf_size, "%s)", detail);
1314 }
1315 }
1316
1317 if (enc->width) {
1318 av_strlcat(buf, new_line ? separator : ", ", buf_size);
1319
1320 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1321 "%dx%d",
1322 enc->width, enc->height);
1323
1324 if (av_log_get_level() >= AV_LOG_VERBOSE &&
1325 (enc->width != enc->coded_width ||
1326 enc->height != enc->coded_height))
1327 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1328 " (%dx%d)", enc->coded_width, enc->coded_height);
1329
1330 if (enc->sample_aspect_ratio.num) {
1331 av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
1332 enc->width * (int64_t)enc->sample_aspect_ratio.num,
1333 enc->height * (int64_t)enc->sample_aspect_ratio.den,
1334 1024 * 1024);
1335 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1336 " [SAR %d:%d DAR %d:%d]",
1337 enc->sample_aspect_ratio.num, enc->sample_aspect_ratio.den,
1338 display_aspect_ratio.num, display_aspect_ratio.den);
1339 }
1340 if (av_log_get_level() >= AV_LOG_DEBUG) {
1341 int g = av_gcd(enc->time_base.num, enc->time_base.den);
1342 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1343 ", %d/%d",
1344 enc->time_base.num / g, enc->time_base.den / g);
1345 }
1346 }
1347 if (encode) {
1348 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1349 ", q=%d-%d", enc->qmin, enc->qmax);
1350 } else {
1351 if (enc->properties & FF_CODEC_PROPERTY_CLOSED_CAPTIONS)
1352 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1353 ", Closed Captions");
1354 if (enc->properties & FF_CODEC_PROPERTY_LOSSLESS)
1355 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1356 ", lossless");
1357 }
1358 break;
1359 case AVMEDIA_TYPE_AUDIO:
1360 av_strlcat(buf, separator, buf_size);
1361
1362 if (enc->sample_rate) {
1363 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1364 "%d Hz, ", enc->sample_rate);
1365 }
1366 av_get_channel_layout_string(buf + strlen(buf), buf_size - strlen(buf), enc->channels, enc->channel_layout);
1367 if (enc->sample_fmt != AV_SAMPLE_FMT_NONE) {
1368 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1369 ", %s", av_get_sample_fmt_name(enc->sample_fmt));
1370 }
1371 if ( enc->bits_per_raw_sample > 0
1372 && enc->bits_per_raw_sample != av_get_bytes_per_sample(enc->sample_fmt) * 8)
1373 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1374 " (%d bit)", enc->bits_per_raw_sample);
1375 if (av_log_get_level() >= AV_LOG_VERBOSE) {
1376 if (enc->initial_padding)
1377 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1378 ", delay %d", enc->initial_padding);
1379 if (enc->trailing_padding)
1380 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1381 ", padding %d", enc->trailing_padding);
1382 }
1383 break;
1384 case AVMEDIA_TYPE_DATA:
1385 if (av_log_get_level() >= AV_LOG_DEBUG) {
1386 int g = av_gcd(enc->time_base.num, enc->time_base.den);
1387 if (g)
1388 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1389 ", %d/%d",
1390 enc->time_base.num / g, enc->time_base.den / g);
1391 }
1392 break;
1393 case AVMEDIA_TYPE_SUBTITLE:
1394 if (enc->width)
1395 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1396 ", %dx%d", enc->width, enc->height);
1397 break;
1398 default:
1399 return;
1400 }
1401 if (encode) {
1402 if (enc->flags & AV_CODEC_FLAG_PASS1)
1403 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1404 ", pass 1");
1405 if (enc->flags & AV_CODEC_FLAG_PASS2)
1406 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1407 ", pass 2");
1408 }
1409 bitrate = get_bit_rate(enc);
1410 if (bitrate != 0) {
1411 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1412 ", %"PRId64" kb/s", bitrate / 1000);
1413 } else if (enc->rc_max_rate > 0) {
1414 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1415 ", max. %"PRId64" kb/s", enc->rc_max_rate / 1000);
1416 }
1417 }
1418
av_get_profile_name(const AVCodec * codec,int profile)1419 const char *av_get_profile_name(const AVCodec *codec, int profile)
1420 {
1421 const AVProfile *p;
1422 if (profile == FF_PROFILE_UNKNOWN || !codec->profiles)
1423 return NULL;
1424
1425 for (p = codec->profiles; p->profile != FF_PROFILE_UNKNOWN; p++)
1426 if (p->profile == profile)
1427 return p->name;
1428
1429 return NULL;
1430 }
1431
avcodec_profile_name(enum AVCodecID codec_id,int profile)1432 const char *avcodec_profile_name(enum AVCodecID codec_id, int profile)
1433 {
1434 const AVCodecDescriptor *desc = avcodec_descriptor_get(codec_id);
1435 const AVProfile *p;
1436
1437 if (profile == FF_PROFILE_UNKNOWN || !desc || !desc->profiles)
1438 return NULL;
1439
1440 for (p = desc->profiles; p->profile != FF_PROFILE_UNKNOWN; p++)
1441 if (p->profile == profile)
1442 return p->name;
1443
1444 return NULL;
1445 }
1446
avcodec_version(void)1447 unsigned avcodec_version(void)
1448 {
1449 av_assert0(AV_CODEC_ID_PCM_S8_PLANAR==65563);
1450 av_assert0(AV_CODEC_ID_ADPCM_G722==69660);
1451 av_assert0(AV_CODEC_ID_SRT==94216);
1452 av_assert0(LIBAVCODEC_VERSION_MICRO >= 100);
1453
1454 return LIBAVCODEC_VERSION_INT;
1455 }
1456
avcodec_configuration(void)1457 const char *avcodec_configuration(void)
1458 {
1459 return FFMPEG_CONFIGURATION;
1460 }
1461
avcodec_license(void)1462 const char *avcodec_license(void)
1463 {
1464 #define LICENSE_PREFIX "libavcodec license: "
1465 return &LICENSE_PREFIX FFMPEG_LICENSE[sizeof(LICENSE_PREFIX) - 1];
1466 }
1467
av_get_exact_bits_per_sample(enum AVCodecID codec_id)1468 int av_get_exact_bits_per_sample(enum AVCodecID codec_id)
1469 {
1470 switch (codec_id) {
1471 case AV_CODEC_ID_8SVX_EXP:
1472 case AV_CODEC_ID_8SVX_FIB:
1473 case AV_CODEC_ID_ADPCM_CT:
1474 case AV_CODEC_ID_ADPCM_IMA_APC:
1475 case AV_CODEC_ID_ADPCM_IMA_EA_SEAD:
1476 case AV_CODEC_ID_ADPCM_IMA_OKI:
1477 case AV_CODEC_ID_ADPCM_IMA_WS:
1478 case AV_CODEC_ID_ADPCM_IMA_SSI:
1479 case AV_CODEC_ID_ADPCM_G722:
1480 case AV_CODEC_ID_ADPCM_YAMAHA:
1481 case AV_CODEC_ID_ADPCM_AICA:
1482 return 4;
1483 case AV_CODEC_ID_DSD_LSBF:
1484 case AV_CODEC_ID_DSD_MSBF:
1485 case AV_CODEC_ID_DSD_LSBF_PLANAR:
1486 case AV_CODEC_ID_DSD_MSBF_PLANAR:
1487 case AV_CODEC_ID_PCM_ALAW:
1488 case AV_CODEC_ID_PCM_MULAW:
1489 case AV_CODEC_ID_PCM_VIDC:
1490 case AV_CODEC_ID_PCM_S8:
1491 case AV_CODEC_ID_PCM_S8_PLANAR:
1492 case AV_CODEC_ID_PCM_U8:
1493 case AV_CODEC_ID_SDX2_DPCM:
1494 case AV_CODEC_ID_DERF_DPCM:
1495 return 8;
1496 case AV_CODEC_ID_PCM_S16BE:
1497 case AV_CODEC_ID_PCM_S16BE_PLANAR:
1498 case AV_CODEC_ID_PCM_S16LE:
1499 case AV_CODEC_ID_PCM_S16LE_PLANAR:
1500 case AV_CODEC_ID_PCM_U16BE:
1501 case AV_CODEC_ID_PCM_U16LE:
1502 return 16;
1503 case AV_CODEC_ID_PCM_S24DAUD:
1504 case AV_CODEC_ID_PCM_S24BE:
1505 case AV_CODEC_ID_PCM_S24LE:
1506 case AV_CODEC_ID_PCM_S24LE_PLANAR:
1507 case AV_CODEC_ID_PCM_U24BE:
1508 case AV_CODEC_ID_PCM_U24LE:
1509 return 24;
1510 case AV_CODEC_ID_PCM_S32BE:
1511 case AV_CODEC_ID_PCM_S32LE:
1512 case AV_CODEC_ID_PCM_S32LE_PLANAR:
1513 case AV_CODEC_ID_PCM_U32BE:
1514 case AV_CODEC_ID_PCM_U32LE:
1515 case AV_CODEC_ID_PCM_F32BE:
1516 case AV_CODEC_ID_PCM_F32LE:
1517 case AV_CODEC_ID_PCM_F24LE:
1518 case AV_CODEC_ID_PCM_F16LE:
1519 return 32;
1520 case AV_CODEC_ID_PCM_F64BE:
1521 case AV_CODEC_ID_PCM_F64LE:
1522 case AV_CODEC_ID_PCM_S64BE:
1523 case AV_CODEC_ID_PCM_S64LE:
1524 return 64;
1525 default:
1526 return 0;
1527 }
1528 }
1529
av_get_pcm_codec(enum AVSampleFormat fmt,int be)1530 enum AVCodecID av_get_pcm_codec(enum AVSampleFormat fmt, int be)
1531 {
1532 static const enum AVCodecID map[][2] = {
1533 [AV_SAMPLE_FMT_U8 ] = { AV_CODEC_ID_PCM_U8, AV_CODEC_ID_PCM_U8 },
1534 [AV_SAMPLE_FMT_S16 ] = { AV_CODEC_ID_PCM_S16LE, AV_CODEC_ID_PCM_S16BE },
1535 [AV_SAMPLE_FMT_S32 ] = { AV_CODEC_ID_PCM_S32LE, AV_CODEC_ID_PCM_S32BE },
1536 [AV_SAMPLE_FMT_FLT ] = { AV_CODEC_ID_PCM_F32LE, AV_CODEC_ID_PCM_F32BE },
1537 [AV_SAMPLE_FMT_DBL ] = { AV_CODEC_ID_PCM_F64LE, AV_CODEC_ID_PCM_F64BE },
1538 [AV_SAMPLE_FMT_U8P ] = { AV_CODEC_ID_PCM_U8, AV_CODEC_ID_PCM_U8 },
1539 [AV_SAMPLE_FMT_S16P] = { AV_CODEC_ID_PCM_S16LE, AV_CODEC_ID_PCM_S16BE },
1540 [AV_SAMPLE_FMT_S32P] = { AV_CODEC_ID_PCM_S32LE, AV_CODEC_ID_PCM_S32BE },
1541 [AV_SAMPLE_FMT_S64P] = { AV_CODEC_ID_PCM_S64LE, AV_CODEC_ID_PCM_S64BE },
1542 [AV_SAMPLE_FMT_FLTP] = { AV_CODEC_ID_PCM_F32LE, AV_CODEC_ID_PCM_F32BE },
1543 [AV_SAMPLE_FMT_DBLP] = { AV_CODEC_ID_PCM_F64LE, AV_CODEC_ID_PCM_F64BE },
1544 };
1545 if (fmt < 0 || fmt >= FF_ARRAY_ELEMS(map))
1546 return AV_CODEC_ID_NONE;
1547 if (be < 0 || be > 1)
1548 be = AV_NE(1, 0);
1549 return map[fmt][be];
1550 }
1551
av_get_bits_per_sample(enum AVCodecID codec_id)1552 int av_get_bits_per_sample(enum AVCodecID codec_id)
1553 {
1554 switch (codec_id) {
1555 case AV_CODEC_ID_ADPCM_SBPRO_2:
1556 return 2;
1557 case AV_CODEC_ID_ADPCM_SBPRO_3:
1558 return 3;
1559 case AV_CODEC_ID_ADPCM_SBPRO_4:
1560 case AV_CODEC_ID_ADPCM_IMA_WAV:
1561 case AV_CODEC_ID_ADPCM_IMA_QT:
1562 case AV_CODEC_ID_ADPCM_SWF:
1563 case AV_CODEC_ID_ADPCM_MS:
1564 return 4;
1565 default:
1566 return av_get_exact_bits_per_sample(codec_id);
1567 }
1568 }
1569
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)1570 static int get_audio_frame_duration(enum AVCodecID id, int sr, int ch, int ba,
1571 uint32_t tag, int bits_per_coded_sample, int64_t bitrate,
1572 uint8_t * extradata, int frame_size, int frame_bytes)
1573 {
1574 int bps = av_get_exact_bits_per_sample(id);
1575 int framecount = (ba > 0 && frame_bytes / ba > 0) ? frame_bytes / ba : 1;
1576
1577 /* codecs with an exact constant bits per sample */
1578 if (bps > 0 && ch > 0 && frame_bytes > 0 && ch < 32768 && bps < 32768)
1579 return (frame_bytes * 8LL) / (bps * ch);
1580 bps = bits_per_coded_sample;
1581
1582 /* codecs with a fixed packet duration */
1583 switch (id) {
1584 case AV_CODEC_ID_ADPCM_ADX: return 32;
1585 case AV_CODEC_ID_ADPCM_IMA_QT: return 64;
1586 case AV_CODEC_ID_ADPCM_EA_XAS: return 128;
1587 case AV_CODEC_ID_AMR_NB:
1588 case AV_CODEC_ID_EVRC:
1589 case AV_CODEC_ID_GSM:
1590 case AV_CODEC_ID_QCELP:
1591 case AV_CODEC_ID_RA_288: return 160;
1592 case AV_CODEC_ID_AMR_WB:
1593 case AV_CODEC_ID_GSM_MS: return 320;
1594 case AV_CODEC_ID_MP1: return 384;
1595 case AV_CODEC_ID_ATRAC1: return 512;
1596 case AV_CODEC_ID_ATRAC9:
1597 case AV_CODEC_ID_ATRAC3: return 1024 * framecount;
1598 case AV_CODEC_ID_ATRAC3P: return 2048;
1599 case AV_CODEC_ID_MP2:
1600 case AV_CODEC_ID_MUSEPACK7: return 1152;
1601 case AV_CODEC_ID_AC3: return 1536;
1602 }
1603
1604 if (sr > 0) {
1605 /* calc from sample rate */
1606 if (id == AV_CODEC_ID_TTA)
1607 return 256 * sr / 245;
1608 else if (id == AV_CODEC_ID_DST)
1609 return 588 * sr / 44100;
1610
1611 if (ch > 0) {
1612 /* calc from sample rate and channels */
1613 if (id == AV_CODEC_ID_BINKAUDIO_DCT)
1614 return (480 << (sr / 22050)) / ch;
1615 }
1616
1617 if (id == AV_CODEC_ID_MP3)
1618 return sr <= 24000 ? 576 : 1152;
1619 }
1620
1621 if (ba > 0) {
1622 /* calc from block_align */
1623 if (id == AV_CODEC_ID_SIPR) {
1624 switch (ba) {
1625 case 20: return 160;
1626 case 19: return 144;
1627 case 29: return 288;
1628 case 37: return 480;
1629 }
1630 } else if (id == AV_CODEC_ID_ILBC) {
1631 switch (ba) {
1632 case 38: return 160;
1633 case 50: return 240;
1634 }
1635 }
1636 }
1637
1638 if (frame_bytes > 0) {
1639 /* calc from frame_bytes only */
1640 if (id == AV_CODEC_ID_TRUESPEECH)
1641 return 240 * (frame_bytes / 32);
1642 if (id == AV_CODEC_ID_NELLYMOSER)
1643 return 256 * (frame_bytes / 64);
1644 if (id == AV_CODEC_ID_RA_144)
1645 return 160 * (frame_bytes / 20);
1646
1647 if (bps > 0) {
1648 /* calc from frame_bytes and bits_per_coded_sample */
1649 if (id == AV_CODEC_ID_ADPCM_G726 || id == AV_CODEC_ID_ADPCM_G726LE)
1650 return frame_bytes * 8 / bps;
1651 }
1652
1653 if (ch > 0 && ch < INT_MAX/16) {
1654 /* calc from frame_bytes and channels */
1655 switch (id) {
1656 case AV_CODEC_ID_ADPCM_AFC:
1657 return frame_bytes / (9 * ch) * 16;
1658 case AV_CODEC_ID_ADPCM_PSX:
1659 case AV_CODEC_ID_ADPCM_DTK:
1660 return frame_bytes / (16 * ch) * 28;
1661 case AV_CODEC_ID_ADPCM_4XM:
1662 case AV_CODEC_ID_ADPCM_IMA_DAT4:
1663 case AV_CODEC_ID_ADPCM_IMA_ISS:
1664 return (frame_bytes - 4 * ch) * 2 / ch;
1665 case AV_CODEC_ID_ADPCM_IMA_SMJPEG:
1666 return (frame_bytes - 4) * 2 / ch;
1667 case AV_CODEC_ID_ADPCM_IMA_AMV:
1668 return (frame_bytes - 8) * 2 / ch;
1669 case AV_CODEC_ID_ADPCM_THP:
1670 case AV_CODEC_ID_ADPCM_THP_LE:
1671 if (extradata)
1672 return frame_bytes * 14 / (8 * ch);
1673 break;
1674 case AV_CODEC_ID_ADPCM_XA:
1675 return (frame_bytes / 128) * 224 / ch;
1676 case AV_CODEC_ID_INTERPLAY_DPCM:
1677 return (frame_bytes - 6 - ch) / ch;
1678 case AV_CODEC_ID_ROQ_DPCM:
1679 return (frame_bytes - 8) / ch;
1680 case AV_CODEC_ID_XAN_DPCM:
1681 return (frame_bytes - 2 * ch) / ch;
1682 case AV_CODEC_ID_MACE3:
1683 return 3 * frame_bytes / ch;
1684 case AV_CODEC_ID_MACE6:
1685 return 6 * frame_bytes / ch;
1686 case AV_CODEC_ID_PCM_LXF:
1687 return 2 * (frame_bytes / (5 * ch));
1688 case AV_CODEC_ID_IAC:
1689 case AV_CODEC_ID_IMC:
1690 return 4 * frame_bytes / ch;
1691 }
1692
1693 if (tag) {
1694 /* calc from frame_bytes, channels, and codec_tag */
1695 if (id == AV_CODEC_ID_SOL_DPCM) {
1696 if (tag == 3)
1697 return frame_bytes / ch;
1698 else
1699 return frame_bytes * 2 / ch;
1700 }
1701 }
1702
1703 if (ba > 0) {
1704 /* calc from frame_bytes, channels, and block_align */
1705 int blocks = frame_bytes / ba;
1706 switch (id) {
1707 case AV_CODEC_ID_ADPCM_IMA_WAV:
1708 if (bps < 2 || bps > 5)
1709 return 0;
1710 return blocks * (1 + (ba - 4 * ch) / (bps * ch) * 8);
1711 case AV_CODEC_ID_ADPCM_IMA_DK3:
1712 return blocks * (((ba - 16) * 2 / 3 * 4) / ch);
1713 case AV_CODEC_ID_ADPCM_IMA_DK4:
1714 return blocks * (1 + (ba - 4 * ch) * 2 / ch);
1715 case AV_CODEC_ID_ADPCM_IMA_RAD:
1716 return blocks * ((ba - 4 * ch) * 2 / ch);
1717 case AV_CODEC_ID_ADPCM_MS:
1718 return blocks * (2 + (ba - 7 * ch) * 2 / ch);
1719 case AV_CODEC_ID_ADPCM_MTAF:
1720 return blocks * (ba - 16) * 2 / ch;
1721 }
1722 }
1723
1724 if (bps > 0) {
1725 /* calc from frame_bytes, channels, and bits_per_coded_sample */
1726 switch (id) {
1727 case AV_CODEC_ID_PCM_DVD:
1728 if(bps<4 || frame_bytes<3)
1729 return 0;
1730 return 2 * ((frame_bytes - 3) / ((bps * 2 / 8) * ch));
1731 case AV_CODEC_ID_PCM_BLURAY:
1732 if(bps<4 || frame_bytes<4)
1733 return 0;
1734 return (frame_bytes - 4) / ((FFALIGN(ch, 2) * bps) / 8);
1735 case AV_CODEC_ID_S302M:
1736 return 2 * (frame_bytes / ((bps + 4) / 4)) / ch;
1737 }
1738 }
1739 }
1740 }
1741
1742 /* Fall back on using frame_size */
1743 if (frame_size > 1 && frame_bytes)
1744 return frame_size;
1745
1746 //For WMA we currently have no other means to calculate duration thus we
1747 //do it here by assuming CBR, which is true for all known cases.
1748 if (bitrate > 0 && frame_bytes > 0 && sr > 0 && ba > 1) {
1749 if (id == AV_CODEC_ID_WMAV1 || id == AV_CODEC_ID_WMAV2)
1750 return (frame_bytes * 8LL * sr) / bitrate;
1751 }
1752
1753 return 0;
1754 }
1755
av_get_audio_frame_duration(AVCodecContext * avctx,int frame_bytes)1756 int av_get_audio_frame_duration(AVCodecContext *avctx, int frame_bytes)
1757 {
1758 int duration = get_audio_frame_duration(avctx->codec_id, avctx->sample_rate,
1759 avctx->channels, avctx->block_align,
1760 avctx->codec_tag, avctx->bits_per_coded_sample,
1761 avctx->bit_rate, avctx->extradata, avctx->frame_size,
1762 frame_bytes);
1763 return FFMAX(0, duration);
1764 }
1765
av_get_audio_frame_duration2(AVCodecParameters * par,int frame_bytes)1766 int av_get_audio_frame_duration2(AVCodecParameters *par, int frame_bytes)
1767 {
1768 int duration = get_audio_frame_duration(par->codec_id, par->sample_rate,
1769 par->channels, par->block_align,
1770 par->codec_tag, par->bits_per_coded_sample,
1771 par->bit_rate, par->extradata, par->frame_size,
1772 frame_bytes);
1773 return FFMAX(0, duration);
1774 }
1775
1776 #if !HAVE_THREADS
ff_thread_init(AVCodecContext * s)1777 int ff_thread_init(AVCodecContext *s)
1778 {
1779 return -1;
1780 }
1781
1782 #endif
1783
av_xiphlacing(unsigned char * s,unsigned int v)1784 unsigned int av_xiphlacing(unsigned char *s, unsigned int v)
1785 {
1786 unsigned int n = 0;
1787
1788 while (v >= 0xff) {
1789 *s++ = 0xff;
1790 v -= 0xff;
1791 n++;
1792 }
1793 *s = v;
1794 n++;
1795 return n;
1796 }
1797
ff_match_2uint16(const uint16_t (* tab)[2],int size,int a,int b)1798 int ff_match_2uint16(const uint16_t(*tab)[2], int size, int a, int b)
1799 {
1800 int i;
1801 for (i = 0; i < size && !(tab[i][0] == a && tab[i][1] == b); i++) ;
1802 return i;
1803 }
1804
avcodec_get_hw_config(const AVCodec * codec,int index)1805 const AVCodecHWConfig *avcodec_get_hw_config(const AVCodec *codec, int index)
1806 {
1807 int i;
1808 if (!codec->hw_configs || index < 0)
1809 return NULL;
1810 for (i = 0; i <= index; i++)
1811 if (!codec->hw_configs[i])
1812 return NULL;
1813 return &codec->hw_configs[index]->public;
1814 }
1815
1816 #if FF_API_USER_VISIBLE_AVHWACCEL
av_hwaccel_next(const AVHWAccel * hwaccel)1817 AVHWAccel *av_hwaccel_next(const AVHWAccel *hwaccel)
1818 {
1819 return NULL;
1820 }
1821
av_register_hwaccel(AVHWAccel * hwaccel)1822 void av_register_hwaccel(AVHWAccel *hwaccel)
1823 {
1824 }
1825 #endif
1826
1827 #if FF_API_LOCKMGR
av_lockmgr_register(int (* cb)(void ** mutex,enum AVLockOp op))1828 int av_lockmgr_register(int (*cb)(void **mutex, enum AVLockOp op))
1829 {
1830 return 0;
1831 }
1832 #endif
1833
avpriv_toupper4(unsigned int x)1834 unsigned int avpriv_toupper4(unsigned int x)
1835 {
1836 return av_toupper(x & 0xFF) +
1837 (av_toupper((x >> 8) & 0xFF) << 8) +
1838 (av_toupper((x >> 16) & 0xFF) << 16) +
1839 ((unsigned)av_toupper((x >> 24) & 0xFF) << 24);
1840 }
1841
ff_thread_ref_frame(ThreadFrame * dst,ThreadFrame * src)1842 int ff_thread_ref_frame(ThreadFrame *dst, ThreadFrame *src)
1843 {
1844 int ret;
1845
1846 dst->owner[0] = src->owner[0];
1847 dst->owner[1] = src->owner[1];
1848
1849 ret = av_frame_ref(dst->f, src->f);
1850 if (ret < 0)
1851 return ret;
1852
1853 av_assert0(!dst->progress);
1854
1855 if (src->progress &&
1856 !(dst->progress = av_buffer_ref(src->progress))) {
1857 ff_thread_release_buffer(dst->owner[0], dst);
1858 return AVERROR(ENOMEM);
1859 }
1860
1861 return 0;
1862 }
1863
1864 #if !HAVE_THREADS
1865
ff_thread_get_format(AVCodecContext * avctx,const enum AVPixelFormat * fmt)1866 enum AVPixelFormat ff_thread_get_format(AVCodecContext *avctx, const enum AVPixelFormat *fmt)
1867 {
1868 return ff_get_format(avctx, fmt);
1869 }
1870
ff_thread_get_buffer(AVCodecContext * avctx,ThreadFrame * f,int flags)1871 int ff_thread_get_buffer(AVCodecContext *avctx, ThreadFrame *f, int flags)
1872 {
1873 f->owner[0] = f->owner[1] = avctx;
1874 return ff_get_buffer(avctx, f->f, flags);
1875 }
1876
ff_thread_release_buffer(AVCodecContext * avctx,ThreadFrame * f)1877 void ff_thread_release_buffer(AVCodecContext *avctx, ThreadFrame *f)
1878 {
1879 if (f->f)
1880 av_frame_unref(f->f);
1881 }
1882
ff_thread_finish_setup(AVCodecContext * avctx)1883 void ff_thread_finish_setup(AVCodecContext *avctx)
1884 {
1885 }
1886
ff_thread_report_progress(ThreadFrame * f,int progress,int field)1887 void ff_thread_report_progress(ThreadFrame *f, int progress, int field)
1888 {
1889 }
1890
ff_thread_await_progress(ThreadFrame * f,int progress,int field)1891 void ff_thread_await_progress(ThreadFrame *f, int progress, int field)
1892 {
1893 }
1894
ff_thread_can_start_frame(AVCodecContext * avctx)1895 int ff_thread_can_start_frame(AVCodecContext *avctx)
1896 {
1897 return 1;
1898 }
1899
ff_alloc_entries(AVCodecContext * avctx,int count)1900 int ff_alloc_entries(AVCodecContext *avctx, int count)
1901 {
1902 return 0;
1903 }
1904
ff_reset_entries(AVCodecContext * avctx)1905 void ff_reset_entries(AVCodecContext *avctx)
1906 {
1907 }
1908
ff_thread_await_progress2(AVCodecContext * avctx,int field,int thread,int shift)1909 void ff_thread_await_progress2(AVCodecContext *avctx, int field, int thread, int shift)
1910 {
1911 }
1912
ff_thread_report_progress2(AVCodecContext * avctx,int field,int thread,int n)1913 void ff_thread_report_progress2(AVCodecContext *avctx, int field, int thread, int n)
1914 {
1915 }
1916
1917 #endif
1918
avcodec_is_open(AVCodecContext * s)1919 int avcodec_is_open(AVCodecContext *s)
1920 {
1921 return !!s->internal;
1922 }
1923
avpriv_bprint_to_extradata(AVCodecContext * avctx,struct AVBPrint * buf)1924 int avpriv_bprint_to_extradata(AVCodecContext *avctx, struct AVBPrint *buf)
1925 {
1926 int ret;
1927 char *str;
1928
1929 ret = av_bprint_finalize(buf, &str);
1930 if (ret < 0)
1931 return ret;
1932 if (!av_bprint_is_complete(buf)) {
1933 av_free(str);
1934 return AVERROR(ENOMEM);
1935 }
1936
1937 avctx->extradata = str;
1938 /* Note: the string is NUL terminated (so extradata can be read as a
1939 * string), but the ending character is not accounted in the size (in
1940 * binary formats you are likely not supposed to mux that character). When
1941 * extradata is copied, it is also padded with AV_INPUT_BUFFER_PADDING_SIZE
1942 * zeros. */
1943 avctx->extradata_size = buf->len;
1944 return 0;
1945 }
1946
avpriv_find_start_code(const uint8_t * av_restrict p,const uint8_t * end,uint32_t * av_restrict state)1947 const uint8_t *avpriv_find_start_code(const uint8_t *av_restrict p,
1948 const uint8_t *end,
1949 uint32_t *av_restrict state)
1950 {
1951 int i;
1952
1953 av_assert0(p <= end);
1954 if (p >= end)
1955 return end;
1956
1957 for (i = 0; i < 3; i++) {
1958 uint32_t tmp = *state << 8;
1959 *state = tmp + *(p++);
1960 if (tmp == 0x100 || p == end)
1961 return p;
1962 }
1963
1964 while (p < end) {
1965 if (p[-1] > 1 ) p += 3;
1966 else if (p[-2] ) p += 2;
1967 else if (p[-3]|(p[-1]-1)) p++;
1968 else {
1969 p++;
1970 break;
1971 }
1972 }
1973
1974 p = FFMIN(p, end) - 4;
1975 *state = AV_RB32(p);
1976
1977 return p + 4;
1978 }
1979
av_cpb_properties_alloc(size_t * size)1980 AVCPBProperties *av_cpb_properties_alloc(size_t *size)
1981 {
1982 AVCPBProperties *props = av_mallocz(sizeof(AVCPBProperties));
1983 if (!props)
1984 return NULL;
1985
1986 if (size)
1987 *size = sizeof(*props);
1988
1989 props->vbv_delay = UINT64_MAX;
1990
1991 return props;
1992 }
1993
ff_add_cpb_side_data(AVCodecContext * avctx)1994 AVCPBProperties *ff_add_cpb_side_data(AVCodecContext *avctx)
1995 {
1996 AVPacketSideData *tmp;
1997 AVCPBProperties *props;
1998 size_t size;
1999 int i;
2000
2001 for (i = 0; i < avctx->nb_coded_side_data; i++)
2002 if (avctx->coded_side_data[i].type == AV_PKT_DATA_CPB_PROPERTIES)
2003 return (AVCPBProperties *)avctx->coded_side_data[i].data;
2004
2005 props = av_cpb_properties_alloc(&size);
2006 if (!props)
2007 return NULL;
2008
2009 tmp = av_realloc_array(avctx->coded_side_data, avctx->nb_coded_side_data + 1, sizeof(*tmp));
2010 if (!tmp) {
2011 av_freep(&props);
2012 return NULL;
2013 }
2014
2015 avctx->coded_side_data = tmp;
2016 avctx->nb_coded_side_data++;
2017
2018 avctx->coded_side_data[avctx->nb_coded_side_data - 1].type = AV_PKT_DATA_CPB_PROPERTIES;
2019 avctx->coded_side_data[avctx->nb_coded_side_data - 1].data = (uint8_t*)props;
2020 avctx->coded_side_data[avctx->nb_coded_side_data - 1].size = size;
2021
2022 return props;
2023 }
2024
codec_parameters_reset(AVCodecParameters * par)2025 static void codec_parameters_reset(AVCodecParameters *par)
2026 {
2027 av_freep(&par->extradata);
2028
2029 memset(par, 0, sizeof(*par));
2030
2031 par->codec_type = AVMEDIA_TYPE_UNKNOWN;
2032 par->codec_id = AV_CODEC_ID_NONE;
2033 par->format = -1;
2034 par->field_order = AV_FIELD_UNKNOWN;
2035 par->color_range = AVCOL_RANGE_UNSPECIFIED;
2036 par->color_primaries = AVCOL_PRI_UNSPECIFIED;
2037 par->color_trc = AVCOL_TRC_UNSPECIFIED;
2038 par->color_space = AVCOL_SPC_UNSPECIFIED;
2039 par->chroma_location = AVCHROMA_LOC_UNSPECIFIED;
2040 par->sample_aspect_ratio = (AVRational){ 0, 1 };
2041 par->profile = FF_PROFILE_UNKNOWN;
2042 par->level = FF_LEVEL_UNKNOWN;
2043 }
2044
avcodec_parameters_alloc(void)2045 AVCodecParameters *avcodec_parameters_alloc(void)
2046 {
2047 AVCodecParameters *par = av_mallocz(sizeof(*par));
2048
2049 if (!par)
2050 return NULL;
2051 codec_parameters_reset(par);
2052 return par;
2053 }
2054
avcodec_parameters_free(AVCodecParameters ** ppar)2055 void avcodec_parameters_free(AVCodecParameters **ppar)
2056 {
2057 AVCodecParameters *par = *ppar;
2058
2059 if (!par)
2060 return;
2061 codec_parameters_reset(par);
2062
2063 av_freep(ppar);
2064 }
2065
avcodec_parameters_copy(AVCodecParameters * dst,const AVCodecParameters * src)2066 int avcodec_parameters_copy(AVCodecParameters *dst, const AVCodecParameters *src)
2067 {
2068 codec_parameters_reset(dst);
2069 memcpy(dst, src, sizeof(*dst));
2070
2071 dst->extradata = NULL;
2072 dst->extradata_size = 0;
2073 if (src->extradata) {
2074 dst->extradata = av_mallocz(src->extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);
2075 if (!dst->extradata)
2076 return AVERROR(ENOMEM);
2077 memcpy(dst->extradata, src->extradata, src->extradata_size);
2078 dst->extradata_size = src->extradata_size;
2079 }
2080
2081 return 0;
2082 }
2083
avcodec_parameters_from_context(AVCodecParameters * par,const AVCodecContext * codec)2084 int avcodec_parameters_from_context(AVCodecParameters *par,
2085 const AVCodecContext *codec)
2086 {
2087 codec_parameters_reset(par);
2088
2089 par->codec_type = codec->codec_type;
2090 par->codec_id = codec->codec_id;
2091 par->codec_tag = codec->codec_tag;
2092
2093 par->bit_rate = codec->bit_rate;
2094 par->bits_per_coded_sample = codec->bits_per_coded_sample;
2095 par->bits_per_raw_sample = codec->bits_per_raw_sample;
2096 par->profile = codec->profile;
2097 par->level = codec->level;
2098
2099 switch (par->codec_type) {
2100 case AVMEDIA_TYPE_VIDEO:
2101 par->format = codec->pix_fmt;
2102 par->width = codec->width;
2103 par->height = codec->height;
2104 par->field_order = codec->field_order;
2105 par->color_range = codec->color_range;
2106 par->color_primaries = codec->color_primaries;
2107 par->color_trc = codec->color_trc;
2108 par->color_space = codec->colorspace;
2109 par->chroma_location = codec->chroma_sample_location;
2110 par->sample_aspect_ratio = codec->sample_aspect_ratio;
2111 par->video_delay = codec->has_b_frames;
2112 break;
2113 case AVMEDIA_TYPE_AUDIO:
2114 par->format = codec->sample_fmt;
2115 par->channel_layout = codec->channel_layout;
2116 par->channels = codec->channels;
2117 par->sample_rate = codec->sample_rate;
2118 par->block_align = codec->block_align;
2119 par->frame_size = codec->frame_size;
2120 par->initial_padding = codec->initial_padding;
2121 par->trailing_padding = codec->trailing_padding;
2122 par->seek_preroll = codec->seek_preroll;
2123 break;
2124 case AVMEDIA_TYPE_SUBTITLE:
2125 par->width = codec->width;
2126 par->height = codec->height;
2127 break;
2128 }
2129
2130 if (codec->extradata) {
2131 par->extradata = av_mallocz(codec->extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);
2132 if (!par->extradata)
2133 return AVERROR(ENOMEM);
2134 memcpy(par->extradata, codec->extradata, codec->extradata_size);
2135 par->extradata_size = codec->extradata_size;
2136 }
2137
2138 return 0;
2139 }
2140
avcodec_parameters_to_context(AVCodecContext * codec,const AVCodecParameters * par)2141 int avcodec_parameters_to_context(AVCodecContext *codec,
2142 const AVCodecParameters *par)
2143 {
2144 codec->codec_type = par->codec_type;
2145 codec->codec_id = par->codec_id;
2146 codec->codec_tag = par->codec_tag;
2147
2148 codec->bit_rate = par->bit_rate;
2149 codec->bits_per_coded_sample = par->bits_per_coded_sample;
2150 codec->bits_per_raw_sample = par->bits_per_raw_sample;
2151 codec->profile = par->profile;
2152 codec->level = par->level;
2153
2154 switch (par->codec_type) {
2155 case AVMEDIA_TYPE_VIDEO:
2156 codec->pix_fmt = par->format;
2157 codec->width = par->width;
2158 codec->height = par->height;
2159 codec->field_order = par->field_order;
2160 codec->color_range = par->color_range;
2161 codec->color_primaries = par->color_primaries;
2162 codec->color_trc = par->color_trc;
2163 codec->colorspace = par->color_space;
2164 codec->chroma_sample_location = par->chroma_location;
2165 codec->sample_aspect_ratio = par->sample_aspect_ratio;
2166 codec->has_b_frames = par->video_delay;
2167 break;
2168 case AVMEDIA_TYPE_AUDIO:
2169 codec->sample_fmt = par->format;
2170 codec->channel_layout = par->channel_layout;
2171 codec->channels = par->channels;
2172 codec->sample_rate = par->sample_rate;
2173 codec->block_align = par->block_align;
2174 codec->frame_size = par->frame_size;
2175 codec->delay =
2176 codec->initial_padding = par->initial_padding;
2177 codec->trailing_padding = par->trailing_padding;
2178 codec->seek_preroll = par->seek_preroll;
2179 break;
2180 case AVMEDIA_TYPE_SUBTITLE:
2181 codec->width = par->width;
2182 codec->height = par->height;
2183 break;
2184 }
2185
2186 if (par->extradata) {
2187 av_freep(&codec->extradata);
2188 codec->extradata = av_mallocz(par->extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);
2189 if (!codec->extradata)
2190 return AVERROR(ENOMEM);
2191 memcpy(codec->extradata, par->extradata, par->extradata_size);
2192 codec->extradata_size = par->extradata_size;
2193 }
2194
2195 return 0;
2196 }
2197
ff_alloc_a53_sei(const AVFrame * frame,size_t prefix_len,void ** data,size_t * sei_size)2198 int ff_alloc_a53_sei(const AVFrame *frame, size_t prefix_len,
2199 void **data, size_t *sei_size)
2200 {
2201 AVFrameSideData *side_data = NULL;
2202 uint8_t *sei_data;
2203
2204 if (frame)
2205 side_data = av_frame_get_side_data(frame, AV_FRAME_DATA_A53_CC);
2206
2207 if (!side_data) {
2208 *data = NULL;
2209 return 0;
2210 }
2211
2212 *sei_size = side_data->size + 11;
2213 *data = av_mallocz(*sei_size + prefix_len);
2214 if (!*data)
2215 return AVERROR(ENOMEM);
2216 sei_data = (uint8_t*)*data + prefix_len;
2217
2218 // country code
2219 sei_data[0] = 181;
2220 sei_data[1] = 0;
2221 sei_data[2] = 49;
2222
2223 /**
2224 * 'GA94' is standard in North America for ATSC, but hard coding
2225 * this style may not be the right thing to do -- other formats
2226 * do exist. This information is not available in the side_data
2227 * so we are going with this right now.
2228 */
2229 AV_WL32(sei_data + 3, MKTAG('G', 'A', '9', '4'));
2230 sei_data[7] = 3;
2231 sei_data[8] = ((side_data->size/3) & 0x1f) | 0x40;
2232 sei_data[9] = 0;
2233
2234 memcpy(sei_data + 10, side_data->data, side_data->size);
2235
2236 sei_data[side_data->size+10] = 255;
2237
2238 return 0;
2239 }
2240
ff_guess_coded_bitrate(AVCodecContext * avctx)2241 int64_t ff_guess_coded_bitrate(AVCodecContext *avctx)
2242 {
2243 AVRational framerate = avctx->framerate;
2244 int bits_per_coded_sample = avctx->bits_per_coded_sample;
2245 int64_t bitrate;
2246
2247 if (!(framerate.num && framerate.den))
2248 framerate = av_inv_q(avctx->time_base);
2249 if (!(framerate.num && framerate.den))
2250 return 0;
2251
2252 if (!bits_per_coded_sample) {
2253 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(avctx->pix_fmt);
2254 bits_per_coded_sample = av_get_bits_per_pixel(desc);
2255 }
2256 bitrate = (int64_t)bits_per_coded_sample * avctx->width * avctx->height *
2257 framerate.num / framerate.den;
2258
2259 return bitrate;
2260 }
2261
ff_int_from_list_or_default(void * ctx,const char * val_name,int val,const int * array_valid_values,int default_value)2262 int ff_int_from_list_or_default(void *ctx, const char * val_name, int val,
2263 const int * array_valid_values, int default_value)
2264 {
2265 int i = 0, ref_val;
2266
2267 while (1) {
2268 ref_val = array_valid_values[i];
2269 if (ref_val == INT_MAX)
2270 break;
2271 if (val == ref_val)
2272 return val;
2273 i++;
2274 }
2275 /* val is not a valid value */
2276 av_log(ctx, AV_LOG_DEBUG,
2277 "%s %d are not supported. Set to default value : %d\n", val_name, val, default_value);
2278 return default_value;
2279 }
2280