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 if (bits_per_sample) {
515 bit_rate = ctx->sample_rate * (int64_t)ctx->channels;
516 if (bit_rate > INT64_MAX / bits_per_sample) {
517 bit_rate = 0;
518 } else
519 bit_rate *= bits_per_sample;
520 } else
521 bit_rate = ctx->bit_rate;
522 break;
523 default:
524 bit_rate = 0;
525 break;
526 }
527 return bit_rate;
528 }
529
530
ff_lock_avcodec(AVCodecContext * log_ctx,const AVCodec * codec)531 static void ff_lock_avcodec(AVCodecContext *log_ctx, const AVCodec *codec)
532 {
533 if (!(codec->caps_internal & FF_CODEC_CAP_INIT_THREADSAFE) && codec->init)
534 ff_mutex_lock(&codec_mutex);
535 }
536
ff_unlock_avcodec(const AVCodec * codec)537 static void ff_unlock_avcodec(const AVCodec *codec)
538 {
539 if (!(codec->caps_internal & FF_CODEC_CAP_INIT_THREADSAFE) && codec->init)
540 ff_mutex_unlock(&codec_mutex);
541 }
542
ff_codec_open2_recursive(AVCodecContext * avctx,const AVCodec * codec,AVDictionary ** options)543 int attribute_align_arg ff_codec_open2_recursive(AVCodecContext *avctx, const AVCodec *codec, AVDictionary **options)
544 {
545 int ret = 0;
546
547 ff_unlock_avcodec(codec);
548
549 ret = avcodec_open2(avctx, codec, options);
550
551 ff_lock_avcodec(avctx, codec);
552 return ret;
553 }
554
avcodec_open2(AVCodecContext * avctx,const AVCodec * codec,AVDictionary ** options)555 int attribute_align_arg avcodec_open2(AVCodecContext *avctx, const AVCodec *codec, AVDictionary **options)
556 {
557 int ret = 0;
558 int codec_init_ok = 0;
559 AVDictionary *tmp = NULL;
560 const AVPixFmtDescriptor *pixdesc;
561 AVCodecInternal *avci;
562
563 if (avcodec_is_open(avctx))
564 return 0;
565
566 if (!codec && !avctx->codec) {
567 av_log(avctx, AV_LOG_ERROR, "No codec provided to avcodec_open2()\n");
568 return AVERROR(EINVAL);
569 }
570 if (codec && avctx->codec && codec != avctx->codec) {
571 av_log(avctx, AV_LOG_ERROR, "This AVCodecContext was allocated for %s, "
572 "but %s passed to avcodec_open2()\n", avctx->codec->name, codec->name);
573 return AVERROR(EINVAL);
574 }
575 if (!codec)
576 codec = avctx->codec;
577
578 if (avctx->extradata_size < 0 || avctx->extradata_size >= FF_MAX_EXTRADATA_SIZE)
579 return AVERROR(EINVAL);
580
581 if (options)
582 av_dict_copy(&tmp, *options, 0);
583
584 ff_lock_avcodec(avctx, codec);
585
586 avci = av_mallocz(sizeof(*avci));
587 if (!avci) {
588 ret = AVERROR(ENOMEM);
589 goto end;
590 }
591 avctx->internal = avci;
592
593 avci->to_free = av_frame_alloc();
594 avci->compat_decode_frame = av_frame_alloc();
595 avci->buffer_frame = av_frame_alloc();
596 avci->buffer_pkt = av_packet_alloc();
597 avci->ds.in_pkt = av_packet_alloc();
598 avci->last_pkt_props = av_packet_alloc();
599 if (!avci->to_free || !avci->compat_decode_frame ||
600 !avci->buffer_frame || !avci->buffer_pkt ||
601 !avci->ds.in_pkt || !avci->last_pkt_props) {
602 ret = AVERROR(ENOMEM);
603 goto free_and_end;
604 }
605
606 avci->skip_samples_multiplier = 1;
607
608 if (codec->priv_data_size > 0) {
609 if (!avctx->priv_data) {
610 avctx->priv_data = av_mallocz(codec->priv_data_size);
611 if (!avctx->priv_data) {
612 ret = AVERROR(ENOMEM);
613 goto end;
614 }
615 if (codec->priv_class) {
616 *(const AVClass **)avctx->priv_data = codec->priv_class;
617 av_opt_set_defaults(avctx->priv_data);
618 }
619 }
620 if (codec->priv_class && (ret = av_opt_set_dict(avctx->priv_data, &tmp)) < 0)
621 goto free_and_end;
622 } else {
623 avctx->priv_data = NULL;
624 }
625 if ((ret = av_opt_set_dict(avctx, &tmp)) < 0)
626 goto free_and_end;
627
628 if (avctx->codec_whitelist && av_match_list(codec->name, avctx->codec_whitelist, ',') <= 0) {
629 av_log(avctx, AV_LOG_ERROR, "Codec (%s) not on whitelist \'%s\'\n", codec->name, avctx->codec_whitelist);
630 ret = AVERROR(EINVAL);
631 goto free_and_end;
632 }
633
634 // only call ff_set_dimensions() for non H.264/VP6F/DXV codecs so as not to overwrite previously setup dimensions
635 if (!(avctx->coded_width && avctx->coded_height && avctx->width && avctx->height &&
636 (avctx->codec_id == AV_CODEC_ID_H264 || avctx->codec_id == AV_CODEC_ID_VP6F || avctx->codec_id == AV_CODEC_ID_DXV))) {
637 if (avctx->coded_width && avctx->coded_height)
638 ret = ff_set_dimensions(avctx, avctx->coded_width, avctx->coded_height);
639 else if (avctx->width && avctx->height)
640 ret = ff_set_dimensions(avctx, avctx->width, avctx->height);
641 if (ret < 0)
642 goto free_and_end;
643 }
644
645 if ((avctx->coded_width || avctx->coded_height || avctx->width || avctx->height)
646 && ( av_image_check_size2(avctx->coded_width, avctx->coded_height, avctx->max_pixels, AV_PIX_FMT_NONE, 0, avctx) < 0
647 || av_image_check_size2(avctx->width, avctx->height, avctx->max_pixels, AV_PIX_FMT_NONE, 0, avctx) < 0)) {
648 av_log(avctx, AV_LOG_WARNING, "Ignoring invalid width/height values\n");
649 ff_set_dimensions(avctx, 0, 0);
650 }
651
652 if (avctx->width > 0 && avctx->height > 0) {
653 if (av_image_check_sar(avctx->width, avctx->height,
654 avctx->sample_aspect_ratio) < 0) {
655 av_log(avctx, AV_LOG_WARNING, "ignoring invalid SAR: %u/%u\n",
656 avctx->sample_aspect_ratio.num,
657 avctx->sample_aspect_ratio.den);
658 avctx->sample_aspect_ratio = (AVRational){ 0, 1 };
659 }
660 }
661
662 /* if the decoder init function was already called previously,
663 * free the already allocated subtitle_header before overwriting it */
664 if (av_codec_is_decoder(codec))
665 av_freep(&avctx->subtitle_header);
666
667 if (avctx->channels > FF_SANE_NB_CHANNELS || avctx->channels < 0) {
668 av_log(avctx, AV_LOG_ERROR, "Too many or invalid channels: %d\n", avctx->channels);
669 ret = AVERROR(EINVAL);
670 goto free_and_end;
671 }
672 if (avctx->sample_rate < 0) {
673 av_log(avctx, AV_LOG_ERROR, "Invalid sample rate: %d\n", avctx->sample_rate);
674 ret = AVERROR(EINVAL);
675 goto free_and_end;
676 }
677 if (avctx->block_align < 0) {
678 av_log(avctx, AV_LOG_ERROR, "Invalid block align: %d\n", avctx->block_align);
679 ret = AVERROR(EINVAL);
680 goto free_and_end;
681 }
682
683 avctx->codec = codec;
684 if ((avctx->codec_type == AVMEDIA_TYPE_UNKNOWN || avctx->codec_type == codec->type) &&
685 avctx->codec_id == AV_CODEC_ID_NONE) {
686 avctx->codec_type = codec->type;
687 avctx->codec_id = codec->id;
688 }
689 if (avctx->codec_id != codec->id || (avctx->codec_type != codec->type
690 && avctx->codec_type != AVMEDIA_TYPE_ATTACHMENT)) {
691 av_log(avctx, AV_LOG_ERROR, "Codec type or id mismatches\n");
692 ret = AVERROR(EINVAL);
693 goto free_and_end;
694 }
695 avctx->frame_number = 0;
696 avctx->codec_descriptor = avcodec_descriptor_get(avctx->codec_id);
697
698 if ((avctx->codec->capabilities & AV_CODEC_CAP_EXPERIMENTAL) &&
699 avctx->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
700 const char *codec_string = av_codec_is_encoder(codec) ? "encoder" : "decoder";
701 AVCodec *codec2;
702 av_log(avctx, AV_LOG_ERROR,
703 "The %s '%s' is experimental but experimental codecs are not enabled, "
704 "add '-strict %d' if you want to use it.\n",
705 codec_string, codec->name, FF_COMPLIANCE_EXPERIMENTAL);
706 codec2 = av_codec_is_encoder(codec) ? avcodec_find_encoder(codec->id) : avcodec_find_decoder(codec->id);
707 if (!(codec2->capabilities & AV_CODEC_CAP_EXPERIMENTAL))
708 av_log(avctx, AV_LOG_ERROR, "Alternatively use the non experimental %s '%s'.\n",
709 codec_string, codec2->name);
710 ret = AVERROR_EXPERIMENTAL;
711 goto free_and_end;
712 }
713
714 if (avctx->codec_type == AVMEDIA_TYPE_AUDIO &&
715 (!avctx->time_base.num || !avctx->time_base.den)) {
716 avctx->time_base.num = 1;
717 avctx->time_base.den = avctx->sample_rate;
718 }
719
720 if (!HAVE_THREADS)
721 av_log(avctx, AV_LOG_WARNING, "Warning: not compiled with thread support, using thread emulation\n");
722
723 if (CONFIG_FRAME_THREAD_ENCODER && av_codec_is_encoder(avctx->codec)) {
724 ff_unlock_avcodec(codec); //we will instantiate a few encoders thus kick the counter to prevent false detection of a problem
725 ret = ff_frame_thread_encoder_init(avctx, options ? *options : NULL);
726 ff_lock_avcodec(avctx, codec);
727 if (ret < 0)
728 goto free_and_end;
729 }
730
731 if (av_codec_is_decoder(avctx->codec)) {
732 ret = ff_decode_bsfs_init(avctx);
733 if (ret < 0)
734 goto free_and_end;
735 }
736
737 if (HAVE_THREADS
738 && !(avci->frame_thread_encoder && (avctx->active_thread_type&FF_THREAD_FRAME))) {
739 ret = ff_thread_init(avctx);
740 if (ret < 0) {
741 goto free_and_end;
742 }
743 }
744 if (!HAVE_THREADS && !(codec->capabilities & AV_CODEC_CAP_AUTO_THREADS))
745 avctx->thread_count = 1;
746
747 if (avctx->codec->max_lowres < avctx->lowres || avctx->lowres < 0) {
748 av_log(avctx, AV_LOG_WARNING, "The maximum value for lowres supported by the decoder is %d\n",
749 avctx->codec->max_lowres);
750 avctx->lowres = avctx->codec->max_lowres;
751 }
752
753 if (av_codec_is_encoder(avctx->codec)) {
754 int i;
755 #if FF_API_CODED_FRAME
756 FF_DISABLE_DEPRECATION_WARNINGS
757 avctx->coded_frame = av_frame_alloc();
758 if (!avctx->coded_frame) {
759 ret = AVERROR(ENOMEM);
760 goto free_and_end;
761 }
762 FF_ENABLE_DEPRECATION_WARNINGS
763 #endif
764
765 if (avctx->time_base.num <= 0 || avctx->time_base.den <= 0) {
766 av_log(avctx, AV_LOG_ERROR, "The encoder timebase is not set.\n");
767 ret = AVERROR(EINVAL);
768 goto free_and_end;
769 }
770
771 if (avctx->codec->sample_fmts) {
772 for (i = 0; avctx->codec->sample_fmts[i] != AV_SAMPLE_FMT_NONE; i++) {
773 if (avctx->sample_fmt == avctx->codec->sample_fmts[i])
774 break;
775 if (avctx->channels == 1 &&
776 av_get_planar_sample_fmt(avctx->sample_fmt) ==
777 av_get_planar_sample_fmt(avctx->codec->sample_fmts[i])) {
778 avctx->sample_fmt = avctx->codec->sample_fmts[i];
779 break;
780 }
781 }
782 if (avctx->codec->sample_fmts[i] == AV_SAMPLE_FMT_NONE) {
783 char buf[128];
784 snprintf(buf, sizeof(buf), "%d", avctx->sample_fmt);
785 av_log(avctx, AV_LOG_ERROR, "Specified sample format %s is invalid or not supported\n",
786 (char *)av_x_if_null(av_get_sample_fmt_name(avctx->sample_fmt), buf));
787 ret = AVERROR(EINVAL);
788 goto free_and_end;
789 }
790 }
791 if (avctx->codec->pix_fmts) {
792 for (i = 0; avctx->codec->pix_fmts[i] != AV_PIX_FMT_NONE; i++)
793 if (avctx->pix_fmt == avctx->codec->pix_fmts[i])
794 break;
795 if (avctx->codec->pix_fmts[i] == AV_PIX_FMT_NONE
796 && !((avctx->codec_id == AV_CODEC_ID_MJPEG || avctx->codec_id == AV_CODEC_ID_LJPEG)
797 && avctx->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL)) {
798 char buf[128];
799 snprintf(buf, sizeof(buf), "%d", avctx->pix_fmt);
800 av_log(avctx, AV_LOG_ERROR, "Specified pixel format %s is invalid or not supported\n",
801 (char *)av_x_if_null(av_get_pix_fmt_name(avctx->pix_fmt), buf));
802 ret = AVERROR(EINVAL);
803 goto free_and_end;
804 }
805 if (avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ420P ||
806 avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ411P ||
807 avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ422P ||
808 avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ440P ||
809 avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ444P)
810 avctx->color_range = AVCOL_RANGE_JPEG;
811 }
812 if (avctx->codec->supported_samplerates) {
813 for (i = 0; avctx->codec->supported_samplerates[i] != 0; i++)
814 if (avctx->sample_rate == avctx->codec->supported_samplerates[i])
815 break;
816 if (avctx->codec->supported_samplerates[i] == 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 }
823 if (avctx->sample_rate < 0) {
824 av_log(avctx, AV_LOG_ERROR, "Specified sample rate %d is not supported\n",
825 avctx->sample_rate);
826 ret = AVERROR(EINVAL);
827 goto free_and_end;
828 }
829 if (avctx->codec->channel_layouts) {
830 if (!avctx->channel_layout) {
831 av_log(avctx, AV_LOG_WARNING, "Channel layout not specified\n");
832 } else {
833 for (i = 0; avctx->codec->channel_layouts[i] != 0; i++)
834 if (avctx->channel_layout == avctx->codec->channel_layouts[i])
835 break;
836 if (avctx->codec->channel_layouts[i] == 0) {
837 char buf[512];
838 av_get_channel_layout_string(buf, sizeof(buf), -1, avctx->channel_layout);
839 av_log(avctx, AV_LOG_ERROR, "Specified channel layout '%s' is not supported\n", buf);
840 ret = AVERROR(EINVAL);
841 goto free_and_end;
842 }
843 }
844 }
845 if (avctx->channel_layout && avctx->channels) {
846 int channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
847 if (channels != avctx->channels) {
848 char buf[512];
849 av_get_channel_layout_string(buf, sizeof(buf), -1, avctx->channel_layout);
850 av_log(avctx, AV_LOG_ERROR,
851 "Channel layout '%s' with %d channels does not match number of specified channels %d\n",
852 buf, channels, avctx->channels);
853 ret = AVERROR(EINVAL);
854 goto free_and_end;
855 }
856 } else if (avctx->channel_layout) {
857 avctx->channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
858 }
859 if (avctx->channels < 0) {
860 av_log(avctx, AV_LOG_ERROR, "Specified number of channels %d is not supported\n",
861 avctx->channels);
862 ret = AVERROR(EINVAL);
863 goto free_and_end;
864 }
865 if(avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
866 pixdesc = av_pix_fmt_desc_get(avctx->pix_fmt);
867 if ( avctx->bits_per_raw_sample < 0
868 || (avctx->bits_per_raw_sample > 8 && pixdesc->comp[0].depth <= 8)) {
869 av_log(avctx, AV_LOG_WARNING, "Specified bit depth %d not possible with the specified pixel formats depth %d\n",
870 avctx->bits_per_raw_sample, pixdesc->comp[0].depth);
871 avctx->bits_per_raw_sample = pixdesc->comp[0].depth;
872 }
873 if (avctx->width <= 0 || avctx->height <= 0) {
874 av_log(avctx, AV_LOG_ERROR, "dimensions not set\n");
875 ret = AVERROR(EINVAL);
876 goto free_and_end;
877 }
878 }
879 if ( (avctx->codec_type == AVMEDIA_TYPE_VIDEO || avctx->codec_type == AVMEDIA_TYPE_AUDIO)
880 && avctx->bit_rate>0 && avctx->bit_rate<1000) {
881 av_log(avctx, AV_LOG_WARNING, "Bitrate %"PRId64" is extremely low, maybe you mean %"PRId64"k\n", avctx->bit_rate, avctx->bit_rate);
882 }
883
884 if (!avctx->rc_initial_buffer_occupancy)
885 avctx->rc_initial_buffer_occupancy = avctx->rc_buffer_size * 3LL / 4;
886
887 if (avctx->ticks_per_frame && avctx->time_base.num &&
888 avctx->ticks_per_frame > INT_MAX / avctx->time_base.num) {
889 av_log(avctx, AV_LOG_ERROR,
890 "ticks_per_frame %d too large for the timebase %d/%d.",
891 avctx->ticks_per_frame,
892 avctx->time_base.num,
893 avctx->time_base.den);
894 goto free_and_end;
895 }
896
897 if (avctx->hw_frames_ctx) {
898 AVHWFramesContext *frames_ctx = (AVHWFramesContext*)avctx->hw_frames_ctx->data;
899 if (frames_ctx->format != avctx->pix_fmt) {
900 av_log(avctx, AV_LOG_ERROR,
901 "Mismatching AVCodecContext.pix_fmt and AVHWFramesContext.format\n");
902 ret = AVERROR(EINVAL);
903 goto free_and_end;
904 }
905 if (avctx->sw_pix_fmt != AV_PIX_FMT_NONE &&
906 avctx->sw_pix_fmt != frames_ctx->sw_format) {
907 av_log(avctx, AV_LOG_ERROR,
908 "Mismatching AVCodecContext.sw_pix_fmt (%s) "
909 "and AVHWFramesContext.sw_format (%s)\n",
910 av_get_pix_fmt_name(avctx->sw_pix_fmt),
911 av_get_pix_fmt_name(frames_ctx->sw_format));
912 ret = AVERROR(EINVAL);
913 goto free_and_end;
914 }
915 avctx->sw_pix_fmt = frames_ctx->sw_format;
916 }
917 }
918
919 avctx->pts_correction_num_faulty_pts =
920 avctx->pts_correction_num_faulty_dts = 0;
921 avctx->pts_correction_last_pts =
922 avctx->pts_correction_last_dts = INT64_MIN;
923
924 if ( !CONFIG_GRAY && avctx->flags & AV_CODEC_FLAG_GRAY
925 && avctx->codec_descriptor->type == AVMEDIA_TYPE_VIDEO)
926 av_log(avctx, AV_LOG_WARNING,
927 "gray decoding requested but not enabled at configuration time\n");
928 if (avctx->flags2 & AV_CODEC_FLAG2_EXPORT_MVS) {
929 avctx->export_side_data |= AV_CODEC_EXPORT_DATA_MVS;
930 }
931
932 if ( avctx->codec->init && (!(avctx->active_thread_type&FF_THREAD_FRAME)
933 || avci->frame_thread_encoder)) {
934 ret = avctx->codec->init(avctx);
935 if (ret < 0) {
936 goto free_and_end;
937 }
938 codec_init_ok = 1;
939 }
940
941 ret=0;
942
943 if (av_codec_is_decoder(avctx->codec)) {
944 if (!avctx->bit_rate)
945 avctx->bit_rate = get_bit_rate(avctx);
946 /* validate channel layout from the decoder */
947 if (avctx->channel_layout) {
948 int channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
949 if (!avctx->channels)
950 avctx->channels = channels;
951 else if (channels != avctx->channels) {
952 char buf[512];
953 av_get_channel_layout_string(buf, sizeof(buf), -1, avctx->channel_layout);
954 av_log(avctx, AV_LOG_WARNING,
955 "Channel layout '%s' with %d channels does not match specified number of channels %d: "
956 "ignoring specified channel layout\n",
957 buf, channels, avctx->channels);
958 avctx->channel_layout = 0;
959 }
960 }
961 if (avctx->channels && avctx->channels < 0 ||
962 avctx->channels > FF_SANE_NB_CHANNELS) {
963 ret = AVERROR(EINVAL);
964 goto free_and_end;
965 }
966 if (avctx->bits_per_coded_sample < 0) {
967 ret = AVERROR(EINVAL);
968 goto free_and_end;
969 }
970 if (avctx->sub_charenc) {
971 if (avctx->codec_type != AVMEDIA_TYPE_SUBTITLE) {
972 av_log(avctx, AV_LOG_ERROR, "Character encoding is only "
973 "supported with subtitles codecs\n");
974 ret = AVERROR(EINVAL);
975 goto free_and_end;
976 } else if (avctx->codec_descriptor->props & AV_CODEC_PROP_BITMAP_SUB) {
977 av_log(avctx, AV_LOG_WARNING, "Codec '%s' is bitmap-based, "
978 "subtitles character encoding will be ignored\n",
979 avctx->codec_descriptor->name);
980 avctx->sub_charenc_mode = FF_SUB_CHARENC_MODE_DO_NOTHING;
981 } else {
982 /* input character encoding is set for a text based subtitle
983 * codec at this point */
984 if (avctx->sub_charenc_mode == FF_SUB_CHARENC_MODE_AUTOMATIC)
985 avctx->sub_charenc_mode = FF_SUB_CHARENC_MODE_PRE_DECODER;
986
987 if (avctx->sub_charenc_mode == FF_SUB_CHARENC_MODE_PRE_DECODER) {
988 #if CONFIG_ICONV
989 iconv_t cd = iconv_open("UTF-8", avctx->sub_charenc);
990 if (cd == (iconv_t)-1) {
991 ret = AVERROR(errno);
992 av_log(avctx, AV_LOG_ERROR, "Unable to open iconv context "
993 "with input character encoding \"%s\"\n", avctx->sub_charenc);
994 goto free_and_end;
995 }
996 iconv_close(cd);
997 #else
998 av_log(avctx, AV_LOG_ERROR, "Character encoding subtitles "
999 "conversion needs a libavcodec built with iconv support "
1000 "for this codec\n");
1001 ret = AVERROR(ENOSYS);
1002 goto free_and_end;
1003 #endif
1004 }
1005 }
1006 }
1007
1008 #if FF_API_AVCTX_TIMEBASE
1009 if (avctx->framerate.num > 0 && avctx->framerate.den > 0)
1010 avctx->time_base = av_inv_q(av_mul_q(avctx->framerate, (AVRational){avctx->ticks_per_frame, 1}));
1011 #endif
1012 }
1013 if (codec->priv_data_size > 0 && avctx->priv_data && codec->priv_class) {
1014 av_assert0(*(const AVClass **)avctx->priv_data == codec->priv_class);
1015 }
1016
1017 end:
1018 ff_unlock_avcodec(codec);
1019 if (options) {
1020 av_dict_free(options);
1021 *options = tmp;
1022 }
1023
1024 return ret;
1025 free_and_end:
1026 if (avctx->codec && avctx->codec->close &&
1027 (codec_init_ok ||
1028 (avctx->codec->caps_internal & FF_CODEC_CAP_INIT_CLEANUP)))
1029 avctx->codec->close(avctx);
1030
1031 if (HAVE_THREADS && avci->thread_ctx)
1032 ff_thread_free(avctx);
1033
1034 if (codec->priv_class && codec->priv_data_size)
1035 av_opt_free(avctx->priv_data);
1036 av_opt_free(avctx);
1037
1038 #if FF_API_CODED_FRAME
1039 FF_DISABLE_DEPRECATION_WARNINGS
1040 av_frame_free(&avctx->coded_frame);
1041 FF_ENABLE_DEPRECATION_WARNINGS
1042 #endif
1043
1044 av_dict_free(&tmp);
1045 av_freep(&avctx->priv_data);
1046 av_freep(&avctx->subtitle_header);
1047 if (avci) {
1048 av_frame_free(&avci->to_free);
1049 av_frame_free(&avci->compat_decode_frame);
1050 av_frame_free(&avci->buffer_frame);
1051 av_packet_free(&avci->buffer_pkt);
1052 av_packet_free(&avci->last_pkt_props);
1053
1054 av_packet_free(&avci->ds.in_pkt);
1055 av_bsf_free(&avci->bsf);
1056
1057 av_buffer_unref(&avci->pool);
1058 }
1059 av_freep(&avci);
1060 avctx->internal = NULL;
1061 avctx->codec = NULL;
1062 goto end;
1063 }
1064
avcodec_flush_buffers(AVCodecContext * avctx)1065 void avcodec_flush_buffers(AVCodecContext *avctx)
1066 {
1067 AVCodecInternal *avci = avctx->internal;
1068
1069 if (av_codec_is_encoder(avctx->codec)) {
1070 int caps = avctx->codec->capabilities;
1071
1072 if (!(caps & AV_CODEC_CAP_ENCODER_FLUSH)) {
1073 // Only encoders that explicitly declare support for it can be
1074 // flushed. Otherwise, this is a no-op.
1075 av_log(avctx, AV_LOG_WARNING, "Ignoring attempt to flush encoder "
1076 "that doesn't support it\n");
1077 return;
1078 }
1079
1080 // We haven't implemented flushing for frame-threaded encoders.
1081 av_assert0(!(caps & AV_CODEC_CAP_FRAME_THREADS));
1082 }
1083
1084 avci->draining = 0;
1085 avci->draining_done = 0;
1086 avci->nb_draining_errors = 0;
1087 av_frame_unref(avci->buffer_frame);
1088 av_frame_unref(avci->compat_decode_frame);
1089 av_packet_unref(avci->buffer_pkt);
1090 avci->buffer_pkt_valid = 0;
1091
1092 av_packet_unref(avci->ds.in_pkt);
1093
1094 if (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME)
1095 ff_thread_flush(avctx);
1096 else if (avctx->codec->flush)
1097 avctx->codec->flush(avctx);
1098
1099 avctx->pts_correction_last_pts =
1100 avctx->pts_correction_last_dts = INT64_MIN;
1101
1102 if (av_codec_is_decoder(avctx->codec))
1103 av_bsf_flush(avci->bsf);
1104
1105 if (!avctx->refcounted_frames)
1106 av_frame_unref(avci->to_free);
1107 }
1108
avsubtitle_free(AVSubtitle * sub)1109 void avsubtitle_free(AVSubtitle *sub)
1110 {
1111 int i;
1112
1113 for (i = 0; i < sub->num_rects; i++) {
1114 av_freep(&sub->rects[i]->data[0]);
1115 av_freep(&sub->rects[i]->data[1]);
1116 av_freep(&sub->rects[i]->data[2]);
1117 av_freep(&sub->rects[i]->data[3]);
1118 av_freep(&sub->rects[i]->text);
1119 av_freep(&sub->rects[i]->ass);
1120 av_freep(&sub->rects[i]);
1121 }
1122
1123 av_freep(&sub->rects);
1124
1125 memset(sub, 0, sizeof(*sub));
1126 }
1127
avcodec_close(AVCodecContext * avctx)1128 av_cold int avcodec_close(AVCodecContext *avctx)
1129 {
1130 int i;
1131
1132 if (!avctx)
1133 return 0;
1134
1135 if (avcodec_is_open(avctx)) {
1136 if (CONFIG_FRAME_THREAD_ENCODER &&
1137 avctx->internal->frame_thread_encoder && avctx->thread_count > 1) {
1138 ff_frame_thread_encoder_free(avctx);
1139 }
1140 if (HAVE_THREADS && avctx->internal->thread_ctx)
1141 ff_thread_free(avctx);
1142 if (avctx->codec && avctx->codec->close)
1143 avctx->codec->close(avctx);
1144 avctx->internal->byte_buffer_size = 0;
1145 av_freep(&avctx->internal->byte_buffer);
1146 av_frame_free(&avctx->internal->to_free);
1147 av_frame_free(&avctx->internal->compat_decode_frame);
1148 av_frame_free(&avctx->internal->buffer_frame);
1149 av_packet_free(&avctx->internal->buffer_pkt);
1150 av_packet_free(&avctx->internal->last_pkt_props);
1151
1152 av_packet_free(&avctx->internal->ds.in_pkt);
1153
1154 av_buffer_unref(&avctx->internal->pool);
1155
1156 if (avctx->hwaccel && avctx->hwaccel->uninit)
1157 avctx->hwaccel->uninit(avctx);
1158 av_freep(&avctx->internal->hwaccel_priv_data);
1159
1160 av_bsf_free(&avctx->internal->bsf);
1161
1162 av_freep(&avctx->internal);
1163 }
1164
1165 for (i = 0; i < avctx->nb_coded_side_data; i++)
1166 av_freep(&avctx->coded_side_data[i].data);
1167 av_freep(&avctx->coded_side_data);
1168 avctx->nb_coded_side_data = 0;
1169
1170 av_buffer_unref(&avctx->hw_frames_ctx);
1171 av_buffer_unref(&avctx->hw_device_ctx);
1172
1173 if (avctx->priv_data && avctx->codec && avctx->codec->priv_class)
1174 av_opt_free(avctx->priv_data);
1175 av_opt_free(avctx);
1176 av_freep(&avctx->priv_data);
1177 if (av_codec_is_encoder(avctx->codec)) {
1178 av_freep(&avctx->extradata);
1179 #if FF_API_CODED_FRAME
1180 FF_DISABLE_DEPRECATION_WARNINGS
1181 av_frame_free(&avctx->coded_frame);
1182 FF_ENABLE_DEPRECATION_WARNINGS
1183 #endif
1184 }
1185 avctx->codec = NULL;
1186 avctx->active_thread_type = 0;
1187
1188 return 0;
1189 }
1190
avcodec_get_name(enum AVCodecID id)1191 const char *avcodec_get_name(enum AVCodecID id)
1192 {
1193 const AVCodecDescriptor *cd;
1194 AVCodec *codec;
1195
1196 if (id == AV_CODEC_ID_NONE)
1197 return "none";
1198 cd = avcodec_descriptor_get(id);
1199 if (cd)
1200 return cd->name;
1201 av_log(NULL, AV_LOG_WARNING, "Codec 0x%x is not in the full list.\n", id);
1202 codec = avcodec_find_decoder(id);
1203 if (codec)
1204 return codec->name;
1205 codec = avcodec_find_encoder(id);
1206 if (codec)
1207 return codec->name;
1208 return "unknown_codec";
1209 }
1210
av_get_codec_tag_string(char * buf,size_t buf_size,unsigned int codec_tag)1211 size_t av_get_codec_tag_string(char *buf, size_t buf_size, unsigned int codec_tag)
1212 {
1213 int i, len, ret = 0;
1214
1215 #define TAG_PRINT(x) \
1216 (((x) >= '0' && (x) <= '9') || \
1217 ((x) >= 'a' && (x) <= 'z') || ((x) >= 'A' && (x) <= 'Z') || \
1218 ((x) == '.' || (x) == ' ' || (x) == '-' || (x) == '_'))
1219
1220 for (i = 0; i < 4; i++) {
1221 len = snprintf(buf, buf_size,
1222 TAG_PRINT(codec_tag & 0xFF) ? "%c" : "[%d]", codec_tag & 0xFF);
1223 buf += len;
1224 buf_size = buf_size > len ? buf_size - len : 0;
1225 ret += len;
1226 codec_tag >>= 8;
1227 }
1228 return ret;
1229 }
1230
avcodec_string(char * buf,int buf_size,AVCodecContext * enc,int encode)1231 void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)
1232 {
1233 const char *codec_type;
1234 const char *codec_name;
1235 const char *profile = NULL;
1236 int64_t bitrate;
1237 int new_line = 0;
1238 AVRational display_aspect_ratio;
1239 const char *separator = enc->dump_separator ? (const char *)enc->dump_separator : ", ";
1240
1241 if (!buf || buf_size <= 0)
1242 return;
1243 codec_type = av_get_media_type_string(enc->codec_type);
1244 codec_name = avcodec_get_name(enc->codec_id);
1245 profile = avcodec_profile_name(enc->codec_id, enc->profile);
1246
1247 snprintf(buf, buf_size, "%s: %s", codec_type ? codec_type : "unknown",
1248 codec_name);
1249 buf[0] ^= 'a' ^ 'A'; /* first letter in uppercase */
1250
1251 if (enc->codec && strcmp(enc->codec->name, codec_name))
1252 snprintf(buf + strlen(buf), buf_size - strlen(buf), " (%s)", enc->codec->name);
1253
1254 if (profile)
1255 snprintf(buf + strlen(buf), buf_size - strlen(buf), " (%s)", profile);
1256 if ( enc->codec_type == AVMEDIA_TYPE_VIDEO
1257 && av_log_get_level() >= AV_LOG_VERBOSE
1258 && enc->refs)
1259 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1260 ", %d reference frame%s",
1261 enc->refs, enc->refs > 1 ? "s" : "");
1262
1263 if (enc->codec_tag)
1264 snprintf(buf + strlen(buf), buf_size - strlen(buf), " (%s / 0x%04X)",
1265 av_fourcc2str(enc->codec_tag), enc->codec_tag);
1266
1267 switch (enc->codec_type) {
1268 case AVMEDIA_TYPE_VIDEO:
1269 {
1270 char detail[256] = "(";
1271
1272 av_strlcat(buf, separator, buf_size);
1273
1274 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1275 "%s", enc->pix_fmt == AV_PIX_FMT_NONE ? "none" :
1276 av_get_pix_fmt_name(enc->pix_fmt));
1277 if (enc->bits_per_raw_sample && enc->pix_fmt != AV_PIX_FMT_NONE &&
1278 enc->bits_per_raw_sample < av_pix_fmt_desc_get(enc->pix_fmt)->comp[0].depth)
1279 av_strlcatf(detail, sizeof(detail), "%d bpc, ", enc->bits_per_raw_sample);
1280 if (enc->color_range != AVCOL_RANGE_UNSPECIFIED)
1281 av_strlcatf(detail, sizeof(detail), "%s, ",
1282 av_color_range_name(enc->color_range));
1283
1284 if (enc->colorspace != AVCOL_SPC_UNSPECIFIED ||
1285 enc->color_primaries != AVCOL_PRI_UNSPECIFIED ||
1286 enc->color_trc != AVCOL_TRC_UNSPECIFIED) {
1287 if (enc->colorspace != (int)enc->color_primaries ||
1288 enc->colorspace != (int)enc->color_trc) {
1289 new_line = 1;
1290 av_strlcatf(detail, sizeof(detail), "%s/%s/%s, ",
1291 av_color_space_name(enc->colorspace),
1292 av_color_primaries_name(enc->color_primaries),
1293 av_color_transfer_name(enc->color_trc));
1294 } else
1295 av_strlcatf(detail, sizeof(detail), "%s, ",
1296 av_get_colorspace_name(enc->colorspace));
1297 }
1298
1299 if (enc->field_order != AV_FIELD_UNKNOWN) {
1300 const char *field_order = "progressive";
1301 if (enc->field_order == AV_FIELD_TT)
1302 field_order = "top first";
1303 else if (enc->field_order == AV_FIELD_BB)
1304 field_order = "bottom first";
1305 else if (enc->field_order == AV_FIELD_TB)
1306 field_order = "top coded first (swapped)";
1307 else if (enc->field_order == AV_FIELD_BT)
1308 field_order = "bottom coded first (swapped)";
1309
1310 av_strlcatf(detail, sizeof(detail), "%s, ", field_order);
1311 }
1312
1313 if (av_log_get_level() >= AV_LOG_VERBOSE &&
1314 enc->chroma_sample_location != AVCHROMA_LOC_UNSPECIFIED)
1315 av_strlcatf(detail, sizeof(detail), "%s, ",
1316 av_chroma_location_name(enc->chroma_sample_location));
1317
1318 if (strlen(detail) > 1) {
1319 detail[strlen(detail) - 2] = 0;
1320 av_strlcatf(buf, buf_size, "%s)", detail);
1321 }
1322 }
1323
1324 if (enc->width) {
1325 av_strlcat(buf, new_line ? separator : ", ", buf_size);
1326
1327 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1328 "%dx%d",
1329 enc->width, enc->height);
1330
1331 if (av_log_get_level() >= AV_LOG_VERBOSE &&
1332 (enc->width != enc->coded_width ||
1333 enc->height != enc->coded_height))
1334 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1335 " (%dx%d)", enc->coded_width, enc->coded_height);
1336
1337 if (enc->sample_aspect_ratio.num) {
1338 av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
1339 enc->width * (int64_t)enc->sample_aspect_ratio.num,
1340 enc->height * (int64_t)enc->sample_aspect_ratio.den,
1341 1024 * 1024);
1342 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1343 " [SAR %d:%d DAR %d:%d]",
1344 enc->sample_aspect_ratio.num, enc->sample_aspect_ratio.den,
1345 display_aspect_ratio.num, display_aspect_ratio.den);
1346 }
1347 if (av_log_get_level() >= AV_LOG_DEBUG) {
1348 int g = av_gcd(enc->time_base.num, enc->time_base.den);
1349 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1350 ", %d/%d",
1351 enc->time_base.num / g, enc->time_base.den / g);
1352 }
1353 }
1354 if (encode) {
1355 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1356 ", q=%d-%d", enc->qmin, enc->qmax);
1357 } else {
1358 if (enc->properties & FF_CODEC_PROPERTY_CLOSED_CAPTIONS)
1359 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1360 ", Closed Captions");
1361 if (enc->properties & FF_CODEC_PROPERTY_LOSSLESS)
1362 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1363 ", lossless");
1364 }
1365 break;
1366 case AVMEDIA_TYPE_AUDIO:
1367 av_strlcat(buf, separator, buf_size);
1368
1369 if (enc->sample_rate) {
1370 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1371 "%d Hz, ", enc->sample_rate);
1372 }
1373 av_get_channel_layout_string(buf + strlen(buf), buf_size - strlen(buf), enc->channels, enc->channel_layout);
1374 if (enc->sample_fmt != AV_SAMPLE_FMT_NONE) {
1375 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1376 ", %s", av_get_sample_fmt_name(enc->sample_fmt));
1377 }
1378 if ( enc->bits_per_raw_sample > 0
1379 && enc->bits_per_raw_sample != av_get_bytes_per_sample(enc->sample_fmt) * 8)
1380 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1381 " (%d bit)", enc->bits_per_raw_sample);
1382 if (av_log_get_level() >= AV_LOG_VERBOSE) {
1383 if (enc->initial_padding)
1384 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1385 ", delay %d", enc->initial_padding);
1386 if (enc->trailing_padding)
1387 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1388 ", padding %d", enc->trailing_padding);
1389 }
1390 break;
1391 case AVMEDIA_TYPE_DATA:
1392 if (av_log_get_level() >= AV_LOG_DEBUG) {
1393 int g = av_gcd(enc->time_base.num, enc->time_base.den);
1394 if (g)
1395 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1396 ", %d/%d",
1397 enc->time_base.num / g, enc->time_base.den / g);
1398 }
1399 break;
1400 case AVMEDIA_TYPE_SUBTITLE:
1401 if (enc->width)
1402 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1403 ", %dx%d", enc->width, enc->height);
1404 break;
1405 default:
1406 return;
1407 }
1408 if (encode) {
1409 if (enc->flags & AV_CODEC_FLAG_PASS1)
1410 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1411 ", pass 1");
1412 if (enc->flags & AV_CODEC_FLAG_PASS2)
1413 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1414 ", pass 2");
1415 }
1416 bitrate = get_bit_rate(enc);
1417 if (bitrate != 0) {
1418 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1419 ", %"PRId64" kb/s", bitrate / 1000);
1420 } else if (enc->rc_max_rate > 0) {
1421 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1422 ", max. %"PRId64" kb/s", enc->rc_max_rate / 1000);
1423 }
1424 }
1425
av_get_profile_name(const AVCodec * codec,int profile)1426 const char *av_get_profile_name(const AVCodec *codec, int profile)
1427 {
1428 const AVProfile *p;
1429 if (profile == FF_PROFILE_UNKNOWN || !codec->profiles)
1430 return NULL;
1431
1432 for (p = codec->profiles; p->profile != FF_PROFILE_UNKNOWN; p++)
1433 if (p->profile == profile)
1434 return p->name;
1435
1436 return NULL;
1437 }
1438
avcodec_profile_name(enum AVCodecID codec_id,int profile)1439 const char *avcodec_profile_name(enum AVCodecID codec_id, int profile)
1440 {
1441 const AVCodecDescriptor *desc = avcodec_descriptor_get(codec_id);
1442 const AVProfile *p;
1443
1444 if (profile == FF_PROFILE_UNKNOWN || !desc || !desc->profiles)
1445 return NULL;
1446
1447 for (p = desc->profiles; p->profile != FF_PROFILE_UNKNOWN; p++)
1448 if (p->profile == profile)
1449 return p->name;
1450
1451 return NULL;
1452 }
1453
avcodec_version(void)1454 unsigned avcodec_version(void)
1455 {
1456 av_assert0(AV_CODEC_ID_PCM_S8_PLANAR==65563);
1457 av_assert0(AV_CODEC_ID_ADPCM_G722==69660);
1458 av_assert0(AV_CODEC_ID_SRT==94216);
1459 av_assert0(LIBAVCODEC_VERSION_MICRO >= 100);
1460
1461 return LIBAVCODEC_VERSION_INT;
1462 }
1463
avcodec_configuration(void)1464 const char *avcodec_configuration(void)
1465 {
1466 return FFMPEG_CONFIGURATION;
1467 }
1468
avcodec_license(void)1469 const char *avcodec_license(void)
1470 {
1471 #define LICENSE_PREFIX "libavcodec license: "
1472 return &LICENSE_PREFIX FFMPEG_LICENSE[sizeof(LICENSE_PREFIX) - 1];
1473 }
1474
av_get_exact_bits_per_sample(enum AVCodecID codec_id)1475 int av_get_exact_bits_per_sample(enum AVCodecID codec_id)
1476 {
1477 switch (codec_id) {
1478 case AV_CODEC_ID_8SVX_EXP:
1479 case AV_CODEC_ID_8SVX_FIB:
1480 case AV_CODEC_ID_ADPCM_CT:
1481 case AV_CODEC_ID_ADPCM_IMA_APC:
1482 case AV_CODEC_ID_ADPCM_IMA_EA_SEAD:
1483 case AV_CODEC_ID_ADPCM_IMA_OKI:
1484 case AV_CODEC_ID_ADPCM_IMA_WS:
1485 case AV_CODEC_ID_ADPCM_IMA_SSI:
1486 case AV_CODEC_ID_ADPCM_G722:
1487 case AV_CODEC_ID_ADPCM_YAMAHA:
1488 case AV_CODEC_ID_ADPCM_AICA:
1489 return 4;
1490 case AV_CODEC_ID_DSD_LSBF:
1491 case AV_CODEC_ID_DSD_MSBF:
1492 case AV_CODEC_ID_DSD_LSBF_PLANAR:
1493 case AV_CODEC_ID_DSD_MSBF_PLANAR:
1494 case AV_CODEC_ID_PCM_ALAW:
1495 case AV_CODEC_ID_PCM_MULAW:
1496 case AV_CODEC_ID_PCM_VIDC:
1497 case AV_CODEC_ID_PCM_S8:
1498 case AV_CODEC_ID_PCM_S8_PLANAR:
1499 case AV_CODEC_ID_PCM_U8:
1500 case AV_CODEC_ID_SDX2_DPCM:
1501 case AV_CODEC_ID_DERF_DPCM:
1502 return 8;
1503 case AV_CODEC_ID_PCM_S16BE:
1504 case AV_CODEC_ID_PCM_S16BE_PLANAR:
1505 case AV_CODEC_ID_PCM_S16LE:
1506 case AV_CODEC_ID_PCM_S16LE_PLANAR:
1507 case AV_CODEC_ID_PCM_U16BE:
1508 case AV_CODEC_ID_PCM_U16LE:
1509 return 16;
1510 case AV_CODEC_ID_PCM_S24DAUD:
1511 case AV_CODEC_ID_PCM_S24BE:
1512 case AV_CODEC_ID_PCM_S24LE:
1513 case AV_CODEC_ID_PCM_S24LE_PLANAR:
1514 case AV_CODEC_ID_PCM_U24BE:
1515 case AV_CODEC_ID_PCM_U24LE:
1516 return 24;
1517 case AV_CODEC_ID_PCM_S32BE:
1518 case AV_CODEC_ID_PCM_S32LE:
1519 case AV_CODEC_ID_PCM_S32LE_PLANAR:
1520 case AV_CODEC_ID_PCM_U32BE:
1521 case AV_CODEC_ID_PCM_U32LE:
1522 case AV_CODEC_ID_PCM_F32BE:
1523 case AV_CODEC_ID_PCM_F32LE:
1524 case AV_CODEC_ID_PCM_F24LE:
1525 case AV_CODEC_ID_PCM_F16LE:
1526 return 32;
1527 case AV_CODEC_ID_PCM_F64BE:
1528 case AV_CODEC_ID_PCM_F64LE:
1529 case AV_CODEC_ID_PCM_S64BE:
1530 case AV_CODEC_ID_PCM_S64LE:
1531 return 64;
1532 default:
1533 return 0;
1534 }
1535 }
1536
av_get_pcm_codec(enum AVSampleFormat fmt,int be)1537 enum AVCodecID av_get_pcm_codec(enum AVSampleFormat fmt, int be)
1538 {
1539 static const enum AVCodecID map[][2] = {
1540 [AV_SAMPLE_FMT_U8 ] = { AV_CODEC_ID_PCM_U8, AV_CODEC_ID_PCM_U8 },
1541 [AV_SAMPLE_FMT_S16 ] = { AV_CODEC_ID_PCM_S16LE, AV_CODEC_ID_PCM_S16BE },
1542 [AV_SAMPLE_FMT_S32 ] = { AV_CODEC_ID_PCM_S32LE, AV_CODEC_ID_PCM_S32BE },
1543 [AV_SAMPLE_FMT_FLT ] = { AV_CODEC_ID_PCM_F32LE, AV_CODEC_ID_PCM_F32BE },
1544 [AV_SAMPLE_FMT_DBL ] = { AV_CODEC_ID_PCM_F64LE, AV_CODEC_ID_PCM_F64BE },
1545 [AV_SAMPLE_FMT_U8P ] = { AV_CODEC_ID_PCM_U8, AV_CODEC_ID_PCM_U8 },
1546 [AV_SAMPLE_FMT_S16P] = { AV_CODEC_ID_PCM_S16LE, AV_CODEC_ID_PCM_S16BE },
1547 [AV_SAMPLE_FMT_S32P] = { AV_CODEC_ID_PCM_S32LE, AV_CODEC_ID_PCM_S32BE },
1548 [AV_SAMPLE_FMT_S64P] = { AV_CODEC_ID_PCM_S64LE, AV_CODEC_ID_PCM_S64BE },
1549 [AV_SAMPLE_FMT_FLTP] = { AV_CODEC_ID_PCM_F32LE, AV_CODEC_ID_PCM_F32BE },
1550 [AV_SAMPLE_FMT_DBLP] = { AV_CODEC_ID_PCM_F64LE, AV_CODEC_ID_PCM_F64BE },
1551 };
1552 if (fmt < 0 || fmt >= FF_ARRAY_ELEMS(map))
1553 return AV_CODEC_ID_NONE;
1554 if (be < 0 || be > 1)
1555 be = AV_NE(1, 0);
1556 return map[fmt][be];
1557 }
1558
av_get_bits_per_sample(enum AVCodecID codec_id)1559 int av_get_bits_per_sample(enum AVCodecID codec_id)
1560 {
1561 switch (codec_id) {
1562 case AV_CODEC_ID_ADPCM_SBPRO_2:
1563 return 2;
1564 case AV_CODEC_ID_ADPCM_SBPRO_3:
1565 return 3;
1566 case AV_CODEC_ID_ADPCM_SBPRO_4:
1567 case AV_CODEC_ID_ADPCM_IMA_WAV:
1568 case AV_CODEC_ID_ADPCM_IMA_QT:
1569 case AV_CODEC_ID_ADPCM_SWF:
1570 case AV_CODEC_ID_ADPCM_MS:
1571 return 4;
1572 default:
1573 return av_get_exact_bits_per_sample(codec_id);
1574 }
1575 }
1576
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)1577 static int get_audio_frame_duration(enum AVCodecID id, int sr, int ch, int ba,
1578 uint32_t tag, int bits_per_coded_sample, int64_t bitrate,
1579 uint8_t * extradata, int frame_size, int frame_bytes)
1580 {
1581 int bps = av_get_exact_bits_per_sample(id);
1582 int framecount = (ba > 0 && frame_bytes / ba > 0) ? frame_bytes / ba : 1;
1583
1584 /* codecs with an exact constant bits per sample */
1585 if (bps > 0 && ch > 0 && frame_bytes > 0 && ch < 32768 && bps < 32768)
1586 return (frame_bytes * 8LL) / (bps * ch);
1587 bps = bits_per_coded_sample;
1588
1589 /* codecs with a fixed packet duration */
1590 switch (id) {
1591 case AV_CODEC_ID_ADPCM_ADX: return 32;
1592 case AV_CODEC_ID_ADPCM_IMA_QT: return 64;
1593 case AV_CODEC_ID_ADPCM_EA_XAS: return 128;
1594 case AV_CODEC_ID_AMR_NB:
1595 case AV_CODEC_ID_EVRC:
1596 case AV_CODEC_ID_GSM:
1597 case AV_CODEC_ID_QCELP:
1598 case AV_CODEC_ID_RA_288: return 160;
1599 case AV_CODEC_ID_AMR_WB:
1600 case AV_CODEC_ID_GSM_MS: return 320;
1601 case AV_CODEC_ID_MP1: return 384;
1602 case AV_CODEC_ID_ATRAC1: return 512;
1603 case AV_CODEC_ID_ATRAC9:
1604 case AV_CODEC_ID_ATRAC3:
1605 if (framecount > INT_MAX/1024)
1606 return 0;
1607 return 1024 * framecount;
1608 case AV_CODEC_ID_ATRAC3P: return 2048;
1609 case AV_CODEC_ID_MP2:
1610 case AV_CODEC_ID_MUSEPACK7: return 1152;
1611 case AV_CODEC_ID_AC3: return 1536;
1612 }
1613
1614 if (sr > 0) {
1615 /* calc from sample rate */
1616 if (id == AV_CODEC_ID_TTA)
1617 return 256 * sr / 245;
1618 else if (id == AV_CODEC_ID_DST)
1619 return 588 * sr / 44100;
1620
1621 if (ch > 0) {
1622 /* calc from sample rate and channels */
1623 if (id == AV_CODEC_ID_BINKAUDIO_DCT) {
1624 if (sr / 22050 > 22)
1625 return 0;
1626 return (480 << (sr / 22050)) / ch;
1627 }
1628 }
1629
1630 if (id == AV_CODEC_ID_MP3)
1631 return sr <= 24000 ? 576 : 1152;
1632 }
1633
1634 if (ba > 0) {
1635 /* calc from block_align */
1636 if (id == AV_CODEC_ID_SIPR) {
1637 switch (ba) {
1638 case 20: return 160;
1639 case 19: return 144;
1640 case 29: return 288;
1641 case 37: return 480;
1642 }
1643 } else if (id == AV_CODEC_ID_ILBC) {
1644 switch (ba) {
1645 case 38: return 160;
1646 case 50: return 240;
1647 }
1648 }
1649 }
1650
1651 if (frame_bytes > 0) {
1652 /* calc from frame_bytes only */
1653 if (id == AV_CODEC_ID_TRUESPEECH)
1654 return 240 * (frame_bytes / 32);
1655 if (id == AV_CODEC_ID_NELLYMOSER)
1656 return 256 * (frame_bytes / 64);
1657 if (id == AV_CODEC_ID_RA_144)
1658 return 160 * (frame_bytes / 20);
1659
1660 if (bps > 0) {
1661 /* calc from frame_bytes and bits_per_coded_sample */
1662 if (id == AV_CODEC_ID_ADPCM_G726 || id == AV_CODEC_ID_ADPCM_G726LE)
1663 return frame_bytes * 8 / bps;
1664 }
1665
1666 if (ch > 0 && ch < INT_MAX/16) {
1667 /* calc from frame_bytes and channels */
1668 switch (id) {
1669 case AV_CODEC_ID_ADPCM_AFC:
1670 return frame_bytes / (9 * ch) * 16;
1671 case AV_CODEC_ID_ADPCM_PSX:
1672 case AV_CODEC_ID_ADPCM_DTK:
1673 frame_bytes /= 16 * ch;
1674 if (frame_bytes > INT_MAX / 28)
1675 return 0;
1676 return frame_bytes * 28;
1677 case AV_CODEC_ID_ADPCM_4XM:
1678 case AV_CODEC_ID_ADPCM_IMA_DAT4:
1679 case AV_CODEC_ID_ADPCM_IMA_ISS:
1680 return (frame_bytes - 4 * ch) * 2 / ch;
1681 case AV_CODEC_ID_ADPCM_IMA_SMJPEG:
1682 return (frame_bytes - 4) * 2 / ch;
1683 case AV_CODEC_ID_ADPCM_IMA_AMV:
1684 return (frame_bytes - 8) * 2 / ch;
1685 case AV_CODEC_ID_ADPCM_THP:
1686 case AV_CODEC_ID_ADPCM_THP_LE:
1687 if (extradata)
1688 return frame_bytes * 14 / (8 * ch);
1689 break;
1690 case AV_CODEC_ID_ADPCM_XA:
1691 return (frame_bytes / 128) * 224 / ch;
1692 case AV_CODEC_ID_INTERPLAY_DPCM:
1693 return (frame_bytes - 6 - ch) / ch;
1694 case AV_CODEC_ID_ROQ_DPCM:
1695 return (frame_bytes - 8) / ch;
1696 case AV_CODEC_ID_XAN_DPCM:
1697 return (frame_bytes - 2 * ch) / ch;
1698 case AV_CODEC_ID_MACE3:
1699 return 3 * frame_bytes / ch;
1700 case AV_CODEC_ID_MACE6:
1701 return 6 * frame_bytes / ch;
1702 case AV_CODEC_ID_PCM_LXF:
1703 return 2 * (frame_bytes / (5 * ch));
1704 case AV_CODEC_ID_IAC:
1705 case AV_CODEC_ID_IMC:
1706 return 4 * frame_bytes / ch;
1707 }
1708
1709 if (tag) {
1710 /* calc from frame_bytes, channels, and codec_tag */
1711 if (id == AV_CODEC_ID_SOL_DPCM) {
1712 if (tag == 3)
1713 return frame_bytes / ch;
1714 else
1715 return frame_bytes * 2 / ch;
1716 }
1717 }
1718
1719 if (ba > 0) {
1720 /* calc from frame_bytes, channels, and block_align */
1721 int blocks = frame_bytes / ba;
1722 switch (id) {
1723 case AV_CODEC_ID_ADPCM_IMA_WAV:
1724 if (bps < 2 || bps > 5)
1725 return 0;
1726 return blocks * (1 + (ba - 4 * ch) / (bps * ch) * 8);
1727 case AV_CODEC_ID_ADPCM_IMA_DK3:
1728 return blocks * (((ba - 16) * 2 / 3 * 4) / ch);
1729 case AV_CODEC_ID_ADPCM_IMA_DK4:
1730 return blocks * (1 + (ba - 4 * ch) * 2 / ch);
1731 case AV_CODEC_ID_ADPCM_IMA_RAD:
1732 return blocks * ((ba - 4 * ch) * 2 / ch);
1733 case AV_CODEC_ID_ADPCM_MS:
1734 return blocks * (2 + (ba - 7 * ch) * 2 / ch);
1735 case AV_CODEC_ID_ADPCM_MTAF:
1736 return blocks * (ba - 16) * 2 / ch;
1737 }
1738 }
1739
1740 if (bps > 0) {
1741 /* calc from frame_bytes, channels, and bits_per_coded_sample */
1742 switch (id) {
1743 case AV_CODEC_ID_PCM_DVD:
1744 if(bps<4 || frame_bytes<3)
1745 return 0;
1746 return 2 * ((frame_bytes - 3) / ((bps * 2 / 8) * ch));
1747 case AV_CODEC_ID_PCM_BLURAY:
1748 if(bps<4 || frame_bytes<4)
1749 return 0;
1750 return (frame_bytes - 4) / ((FFALIGN(ch, 2) * bps) / 8);
1751 case AV_CODEC_ID_S302M:
1752 return 2 * (frame_bytes / ((bps + 4) / 4)) / ch;
1753 }
1754 }
1755 }
1756 }
1757
1758 /* Fall back on using frame_size */
1759 if (frame_size > 1 && frame_bytes)
1760 return frame_size;
1761
1762 //For WMA we currently have no other means to calculate duration thus we
1763 //do it here by assuming CBR, which is true for all known cases.
1764 if (bitrate > 0 && frame_bytes > 0 && sr > 0 && ba > 1) {
1765 if (id == AV_CODEC_ID_WMAV1 || id == AV_CODEC_ID_WMAV2)
1766 return (frame_bytes * 8LL * sr) / bitrate;
1767 }
1768
1769 return 0;
1770 }
1771
av_get_audio_frame_duration(AVCodecContext * avctx,int frame_bytes)1772 int av_get_audio_frame_duration(AVCodecContext *avctx, int frame_bytes)
1773 {
1774 int duration = get_audio_frame_duration(avctx->codec_id, avctx->sample_rate,
1775 avctx->channels, avctx->block_align,
1776 avctx->codec_tag, avctx->bits_per_coded_sample,
1777 avctx->bit_rate, avctx->extradata, avctx->frame_size,
1778 frame_bytes);
1779 return FFMAX(0, duration);
1780 }
1781
av_get_audio_frame_duration2(AVCodecParameters * par,int frame_bytes)1782 int av_get_audio_frame_duration2(AVCodecParameters *par, int frame_bytes)
1783 {
1784 int duration = get_audio_frame_duration(par->codec_id, par->sample_rate,
1785 par->channels, par->block_align,
1786 par->codec_tag, par->bits_per_coded_sample,
1787 par->bit_rate, par->extradata, par->frame_size,
1788 frame_bytes);
1789 return FFMAX(0, duration);
1790 }
1791
1792 #if !HAVE_THREADS
ff_thread_init(AVCodecContext * s)1793 int ff_thread_init(AVCodecContext *s)
1794 {
1795 return -1;
1796 }
1797
1798 #endif
1799
av_xiphlacing(unsigned char * s,unsigned int v)1800 unsigned int av_xiphlacing(unsigned char *s, unsigned int v)
1801 {
1802 unsigned int n = 0;
1803
1804 while (v >= 0xff) {
1805 *s++ = 0xff;
1806 v -= 0xff;
1807 n++;
1808 }
1809 *s = v;
1810 n++;
1811 return n;
1812 }
1813
ff_match_2uint16(const uint16_t (* tab)[2],int size,int a,int b)1814 int ff_match_2uint16(const uint16_t(*tab)[2], int size, int a, int b)
1815 {
1816 int i;
1817 for (i = 0; i < size && !(tab[i][0] == a && tab[i][1] == b); i++) ;
1818 return i;
1819 }
1820
avcodec_get_hw_config(const AVCodec * codec,int index)1821 const AVCodecHWConfig *avcodec_get_hw_config(const AVCodec *codec, int index)
1822 {
1823 int i;
1824 if (!codec->hw_configs || index < 0)
1825 return NULL;
1826 for (i = 0; i <= index; i++)
1827 if (!codec->hw_configs[i])
1828 return NULL;
1829 return &codec->hw_configs[index]->public;
1830 }
1831
1832 #if FF_API_USER_VISIBLE_AVHWACCEL
av_hwaccel_next(const AVHWAccel * hwaccel)1833 AVHWAccel *av_hwaccel_next(const AVHWAccel *hwaccel)
1834 {
1835 return NULL;
1836 }
1837
av_register_hwaccel(AVHWAccel * hwaccel)1838 void av_register_hwaccel(AVHWAccel *hwaccel)
1839 {
1840 }
1841 #endif
1842
1843 #if FF_API_LOCKMGR
av_lockmgr_register(int (* cb)(void ** mutex,enum AVLockOp op))1844 int av_lockmgr_register(int (*cb)(void **mutex, enum AVLockOp op))
1845 {
1846 return 0;
1847 }
1848 #endif
1849
avpriv_toupper4(unsigned int x)1850 unsigned int avpriv_toupper4(unsigned int x)
1851 {
1852 return av_toupper(x & 0xFF) +
1853 (av_toupper((x >> 8) & 0xFF) << 8) +
1854 (av_toupper((x >> 16) & 0xFF) << 16) +
1855 ((unsigned)av_toupper((x >> 24) & 0xFF) << 24);
1856 }
1857
ff_thread_ref_frame(ThreadFrame * dst,ThreadFrame * src)1858 int ff_thread_ref_frame(ThreadFrame *dst, ThreadFrame *src)
1859 {
1860 int ret;
1861
1862 dst->owner[0] = src->owner[0];
1863 dst->owner[1] = src->owner[1];
1864
1865 ret = av_frame_ref(dst->f, src->f);
1866 if (ret < 0)
1867 return ret;
1868
1869 av_assert0(!dst->progress);
1870
1871 if (src->progress &&
1872 !(dst->progress = av_buffer_ref(src->progress))) {
1873 ff_thread_release_buffer(dst->owner[0], dst);
1874 return AVERROR(ENOMEM);
1875 }
1876
1877 return 0;
1878 }
1879
1880 #if !HAVE_THREADS
1881
ff_thread_get_format(AVCodecContext * avctx,const enum AVPixelFormat * fmt)1882 enum AVPixelFormat ff_thread_get_format(AVCodecContext *avctx, const enum AVPixelFormat *fmt)
1883 {
1884 return ff_get_format(avctx, fmt);
1885 }
1886
ff_thread_get_buffer(AVCodecContext * avctx,ThreadFrame * f,int flags)1887 int ff_thread_get_buffer(AVCodecContext *avctx, ThreadFrame *f, int flags)
1888 {
1889 f->owner[0] = f->owner[1] = avctx;
1890 return ff_get_buffer(avctx, f->f, flags);
1891 }
1892
ff_thread_release_buffer(AVCodecContext * avctx,ThreadFrame * f)1893 void ff_thread_release_buffer(AVCodecContext *avctx, ThreadFrame *f)
1894 {
1895 if (f->f)
1896 av_frame_unref(f->f);
1897 }
1898
ff_thread_finish_setup(AVCodecContext * avctx)1899 void ff_thread_finish_setup(AVCodecContext *avctx)
1900 {
1901 }
1902
ff_thread_report_progress(ThreadFrame * f,int progress,int field)1903 void ff_thread_report_progress(ThreadFrame *f, int progress, int field)
1904 {
1905 }
1906
ff_thread_await_progress(ThreadFrame * f,int progress,int field)1907 void ff_thread_await_progress(ThreadFrame *f, int progress, int field)
1908 {
1909 }
1910
ff_thread_can_start_frame(AVCodecContext * avctx)1911 int ff_thread_can_start_frame(AVCodecContext *avctx)
1912 {
1913 return 1;
1914 }
1915
ff_alloc_entries(AVCodecContext * avctx,int count)1916 int ff_alloc_entries(AVCodecContext *avctx, int count)
1917 {
1918 return 0;
1919 }
1920
ff_reset_entries(AVCodecContext * avctx)1921 void ff_reset_entries(AVCodecContext *avctx)
1922 {
1923 }
1924
ff_thread_await_progress2(AVCodecContext * avctx,int field,int thread,int shift)1925 void ff_thread_await_progress2(AVCodecContext *avctx, int field, int thread, int shift)
1926 {
1927 }
1928
ff_thread_report_progress2(AVCodecContext * avctx,int field,int thread,int n)1929 void ff_thread_report_progress2(AVCodecContext *avctx, int field, int thread, int n)
1930 {
1931 }
1932
1933 #endif
1934
avcodec_is_open(AVCodecContext * s)1935 int avcodec_is_open(AVCodecContext *s)
1936 {
1937 return !!s->internal;
1938 }
1939
avpriv_bprint_to_extradata(AVCodecContext * avctx,struct AVBPrint * buf)1940 int avpriv_bprint_to_extradata(AVCodecContext *avctx, struct AVBPrint *buf)
1941 {
1942 int ret;
1943 char *str;
1944
1945 ret = av_bprint_finalize(buf, &str);
1946 if (ret < 0)
1947 return ret;
1948 if (!av_bprint_is_complete(buf)) {
1949 av_free(str);
1950 return AVERROR(ENOMEM);
1951 }
1952
1953 avctx->extradata = str;
1954 /* Note: the string is NUL terminated (so extradata can be read as a
1955 * string), but the ending character is not accounted in the size (in
1956 * binary formats you are likely not supposed to mux that character). When
1957 * extradata is copied, it is also padded with AV_INPUT_BUFFER_PADDING_SIZE
1958 * zeros. */
1959 avctx->extradata_size = buf->len;
1960 return 0;
1961 }
1962
avpriv_find_start_code(const uint8_t * av_restrict p,const uint8_t * end,uint32_t * av_restrict state)1963 const uint8_t *avpriv_find_start_code(const uint8_t *av_restrict p,
1964 const uint8_t *end,
1965 uint32_t *av_restrict state)
1966 {
1967 int i;
1968
1969 av_assert0(p <= end);
1970 if (p >= end)
1971 return end;
1972
1973 for (i = 0; i < 3; i++) {
1974 uint32_t tmp = *state << 8;
1975 *state = tmp + *(p++);
1976 if (tmp == 0x100 || p == end)
1977 return p;
1978 }
1979
1980 while (p < end) {
1981 if (p[-1] > 1 ) p += 3;
1982 else if (p[-2] ) p += 2;
1983 else if (p[-3]|(p[-1]-1)) p++;
1984 else {
1985 p++;
1986 break;
1987 }
1988 }
1989
1990 p = FFMIN(p, end) - 4;
1991 *state = AV_RB32(p);
1992
1993 return p + 4;
1994 }
1995
av_cpb_properties_alloc(size_t * size)1996 AVCPBProperties *av_cpb_properties_alloc(size_t *size)
1997 {
1998 AVCPBProperties *props = av_mallocz(sizeof(AVCPBProperties));
1999 if (!props)
2000 return NULL;
2001
2002 if (size)
2003 *size = sizeof(*props);
2004
2005 props->vbv_delay = UINT64_MAX;
2006
2007 return props;
2008 }
2009
ff_add_cpb_side_data(AVCodecContext * avctx)2010 AVCPBProperties *ff_add_cpb_side_data(AVCodecContext *avctx)
2011 {
2012 AVPacketSideData *tmp;
2013 AVCPBProperties *props;
2014 size_t size;
2015 int i;
2016
2017 for (i = 0; i < avctx->nb_coded_side_data; i++)
2018 if (avctx->coded_side_data[i].type == AV_PKT_DATA_CPB_PROPERTIES)
2019 return (AVCPBProperties *)avctx->coded_side_data[i].data;
2020
2021 props = av_cpb_properties_alloc(&size);
2022 if (!props)
2023 return NULL;
2024
2025 tmp = av_realloc_array(avctx->coded_side_data, avctx->nb_coded_side_data + 1, sizeof(*tmp));
2026 if (!tmp) {
2027 av_freep(&props);
2028 return NULL;
2029 }
2030
2031 avctx->coded_side_data = tmp;
2032 avctx->nb_coded_side_data++;
2033
2034 avctx->coded_side_data[avctx->nb_coded_side_data - 1].type = AV_PKT_DATA_CPB_PROPERTIES;
2035 avctx->coded_side_data[avctx->nb_coded_side_data - 1].data = (uint8_t*)props;
2036 avctx->coded_side_data[avctx->nb_coded_side_data - 1].size = size;
2037
2038 return props;
2039 }
2040
codec_parameters_reset(AVCodecParameters * par)2041 static void codec_parameters_reset(AVCodecParameters *par)
2042 {
2043 av_freep(&par->extradata);
2044
2045 memset(par, 0, sizeof(*par));
2046
2047 par->codec_type = AVMEDIA_TYPE_UNKNOWN;
2048 par->codec_id = AV_CODEC_ID_NONE;
2049 par->format = -1;
2050 par->field_order = AV_FIELD_UNKNOWN;
2051 par->color_range = AVCOL_RANGE_UNSPECIFIED;
2052 par->color_primaries = AVCOL_PRI_UNSPECIFIED;
2053 par->color_trc = AVCOL_TRC_UNSPECIFIED;
2054 par->color_space = AVCOL_SPC_UNSPECIFIED;
2055 par->chroma_location = AVCHROMA_LOC_UNSPECIFIED;
2056 par->sample_aspect_ratio = (AVRational){ 0, 1 };
2057 par->profile = FF_PROFILE_UNKNOWN;
2058 par->level = FF_LEVEL_UNKNOWN;
2059 }
2060
avcodec_parameters_alloc(void)2061 AVCodecParameters *avcodec_parameters_alloc(void)
2062 {
2063 AVCodecParameters *par = av_mallocz(sizeof(*par));
2064
2065 if (!par)
2066 return NULL;
2067 codec_parameters_reset(par);
2068 return par;
2069 }
2070
avcodec_parameters_free(AVCodecParameters ** ppar)2071 void avcodec_parameters_free(AVCodecParameters **ppar)
2072 {
2073 AVCodecParameters *par = *ppar;
2074
2075 if (!par)
2076 return;
2077 codec_parameters_reset(par);
2078
2079 av_freep(ppar);
2080 }
2081
avcodec_parameters_copy(AVCodecParameters * dst,const AVCodecParameters * src)2082 int avcodec_parameters_copy(AVCodecParameters *dst, const AVCodecParameters *src)
2083 {
2084 codec_parameters_reset(dst);
2085 memcpy(dst, src, sizeof(*dst));
2086
2087 dst->extradata = NULL;
2088 dst->extradata_size = 0;
2089 if (src->extradata) {
2090 dst->extradata = av_mallocz(src->extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);
2091 if (!dst->extradata)
2092 return AVERROR(ENOMEM);
2093 memcpy(dst->extradata, src->extradata, src->extradata_size);
2094 dst->extradata_size = src->extradata_size;
2095 }
2096
2097 return 0;
2098 }
2099
avcodec_parameters_from_context(AVCodecParameters * par,const AVCodecContext * codec)2100 int avcodec_parameters_from_context(AVCodecParameters *par,
2101 const AVCodecContext *codec)
2102 {
2103 codec_parameters_reset(par);
2104
2105 par->codec_type = codec->codec_type;
2106 par->codec_id = codec->codec_id;
2107 par->codec_tag = codec->codec_tag;
2108
2109 par->bit_rate = codec->bit_rate;
2110 par->bits_per_coded_sample = codec->bits_per_coded_sample;
2111 par->bits_per_raw_sample = codec->bits_per_raw_sample;
2112 par->profile = codec->profile;
2113 par->level = codec->level;
2114
2115 switch (par->codec_type) {
2116 case AVMEDIA_TYPE_VIDEO:
2117 par->format = codec->pix_fmt;
2118 par->width = codec->width;
2119 par->height = codec->height;
2120 par->field_order = codec->field_order;
2121 par->color_range = codec->color_range;
2122 par->color_primaries = codec->color_primaries;
2123 par->color_trc = codec->color_trc;
2124 par->color_space = codec->colorspace;
2125 par->chroma_location = codec->chroma_sample_location;
2126 par->sample_aspect_ratio = codec->sample_aspect_ratio;
2127 par->video_delay = codec->has_b_frames;
2128 break;
2129 case AVMEDIA_TYPE_AUDIO:
2130 par->format = codec->sample_fmt;
2131 par->channel_layout = codec->channel_layout;
2132 par->channels = codec->channels;
2133 par->sample_rate = codec->sample_rate;
2134 par->block_align = codec->block_align;
2135 par->frame_size = codec->frame_size;
2136 par->initial_padding = codec->initial_padding;
2137 par->trailing_padding = codec->trailing_padding;
2138 par->seek_preroll = codec->seek_preroll;
2139 break;
2140 case AVMEDIA_TYPE_SUBTITLE:
2141 par->width = codec->width;
2142 par->height = codec->height;
2143 break;
2144 }
2145
2146 if (codec->extradata) {
2147 par->extradata = av_mallocz(codec->extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);
2148 if (!par->extradata)
2149 return AVERROR(ENOMEM);
2150 memcpy(par->extradata, codec->extradata, codec->extradata_size);
2151 par->extradata_size = codec->extradata_size;
2152 }
2153
2154 return 0;
2155 }
2156
avcodec_parameters_to_context(AVCodecContext * codec,const AVCodecParameters * par)2157 int avcodec_parameters_to_context(AVCodecContext *codec,
2158 const AVCodecParameters *par)
2159 {
2160 codec->codec_type = par->codec_type;
2161 codec->codec_id = par->codec_id;
2162 codec->codec_tag = par->codec_tag;
2163
2164 codec->bit_rate = par->bit_rate;
2165 codec->bits_per_coded_sample = par->bits_per_coded_sample;
2166 codec->bits_per_raw_sample = par->bits_per_raw_sample;
2167 codec->profile = par->profile;
2168 codec->level = par->level;
2169
2170 switch (par->codec_type) {
2171 case AVMEDIA_TYPE_VIDEO:
2172 codec->pix_fmt = par->format;
2173 codec->width = par->width;
2174 codec->height = par->height;
2175 codec->field_order = par->field_order;
2176 codec->color_range = par->color_range;
2177 codec->color_primaries = par->color_primaries;
2178 codec->color_trc = par->color_trc;
2179 codec->colorspace = par->color_space;
2180 codec->chroma_sample_location = par->chroma_location;
2181 codec->sample_aspect_ratio = par->sample_aspect_ratio;
2182 codec->has_b_frames = par->video_delay;
2183 break;
2184 case AVMEDIA_TYPE_AUDIO:
2185 codec->sample_fmt = par->format;
2186 codec->channel_layout = par->channel_layout;
2187 codec->channels = par->channels;
2188 codec->sample_rate = par->sample_rate;
2189 codec->block_align = par->block_align;
2190 codec->frame_size = par->frame_size;
2191 codec->delay =
2192 codec->initial_padding = par->initial_padding;
2193 codec->trailing_padding = par->trailing_padding;
2194 codec->seek_preroll = par->seek_preroll;
2195 break;
2196 case AVMEDIA_TYPE_SUBTITLE:
2197 codec->width = par->width;
2198 codec->height = par->height;
2199 break;
2200 }
2201
2202 if (par->extradata) {
2203 av_freep(&codec->extradata);
2204 codec->extradata = av_mallocz(par->extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);
2205 if (!codec->extradata)
2206 return AVERROR(ENOMEM);
2207 memcpy(codec->extradata, par->extradata, par->extradata_size);
2208 codec->extradata_size = par->extradata_size;
2209 }
2210
2211 return 0;
2212 }
2213
ff_alloc_a53_sei(const AVFrame * frame,size_t prefix_len,void ** data,size_t * sei_size)2214 int ff_alloc_a53_sei(const AVFrame *frame, size_t prefix_len,
2215 void **data, size_t *sei_size)
2216 {
2217 AVFrameSideData *side_data = NULL;
2218 uint8_t *sei_data;
2219
2220 if (frame)
2221 side_data = av_frame_get_side_data(frame, AV_FRAME_DATA_A53_CC);
2222
2223 if (!side_data) {
2224 *data = NULL;
2225 return 0;
2226 }
2227
2228 *sei_size = side_data->size + 11;
2229 *data = av_mallocz(*sei_size + prefix_len);
2230 if (!*data)
2231 return AVERROR(ENOMEM);
2232 sei_data = (uint8_t*)*data + prefix_len;
2233
2234 // country code
2235 sei_data[0] = 181;
2236 sei_data[1] = 0;
2237 sei_data[2] = 49;
2238
2239 /**
2240 * 'GA94' is standard in North America for ATSC, but hard coding
2241 * this style may not be the right thing to do -- other formats
2242 * do exist. This information is not available in the side_data
2243 * so we are going with this right now.
2244 */
2245 AV_WL32(sei_data + 3, MKTAG('G', 'A', '9', '4'));
2246 sei_data[7] = 3;
2247 sei_data[8] = ((side_data->size/3) & 0x1f) | 0x40;
2248 sei_data[9] = 0;
2249
2250 memcpy(sei_data + 10, side_data->data, side_data->size);
2251
2252 sei_data[side_data->size+10] = 255;
2253
2254 return 0;
2255 }
2256
ff_guess_coded_bitrate(AVCodecContext * avctx)2257 int64_t ff_guess_coded_bitrate(AVCodecContext *avctx)
2258 {
2259 AVRational framerate = avctx->framerate;
2260 int bits_per_coded_sample = avctx->bits_per_coded_sample;
2261 int64_t bitrate;
2262
2263 if (!(framerate.num && framerate.den))
2264 framerate = av_inv_q(avctx->time_base);
2265 if (!(framerate.num && framerate.den))
2266 return 0;
2267
2268 if (!bits_per_coded_sample) {
2269 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(avctx->pix_fmt);
2270 bits_per_coded_sample = av_get_bits_per_pixel(desc);
2271 }
2272 bitrate = (int64_t)bits_per_coded_sample * avctx->width * avctx->height *
2273 framerate.num / framerate.den;
2274
2275 return bitrate;
2276 }
2277
ff_int_from_list_or_default(void * ctx,const char * val_name,int val,const int * array_valid_values,int default_value)2278 int ff_int_from_list_or_default(void *ctx, const char * val_name, int val,
2279 const int * array_valid_values, int default_value)
2280 {
2281 int i = 0, ref_val;
2282
2283 while (1) {
2284 ref_val = array_valid_values[i];
2285 if (ref_val == INT_MAX)
2286 break;
2287 if (val == ref_val)
2288 return val;
2289 i++;
2290 }
2291 /* val is not a valid value */
2292 av_log(ctx, AV_LOG_DEBUG,
2293 "%s %d are not supported. Set to default value : %d\n", val_name, val, default_value);
2294 return default_value;
2295 }
2296