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/avassert.h"
30 #include "libavutil/channel_layout.h"
31 #include "libavutil/intreadwrite.h"
32 #include "libavutil/mem.h"
33 #include "libavutil/pixdesc.h"
34 #include "libavutil/imgutils.h"
35 #include "libavutil/pixfmt.h"
36 #include "avcodec.h"
37 #include "codec.h"
38 #include "codec_internal.h"
39 #include "hwconfig.h"
40 #include "thread.h"
41 #include "threadframe.h"
42 #include "internal.h"
43 #include "put_bits.h"
44 #include "startcode.h"
45 #include <stdlib.h>
46 #include <limits.h>
47
av_fast_padded_malloc(void * ptr,unsigned int * size,size_t min_size)48 void av_fast_padded_malloc(void *ptr, unsigned int *size, size_t min_size)
49 {
50 uint8_t **p = ptr;
51 if (min_size > SIZE_MAX - AV_INPUT_BUFFER_PADDING_SIZE) {
52 av_freep(p);
53 *size = 0;
54 return;
55 }
56 av_fast_mallocz(p, size, min_size + AV_INPUT_BUFFER_PADDING_SIZE);
57 if (*p)
58 memset(*p + min_size, 0, AV_INPUT_BUFFER_PADDING_SIZE);
59 }
60
av_fast_padded_mallocz(void * ptr,unsigned int * size,size_t min_size)61 void av_fast_padded_mallocz(void *ptr, unsigned int *size, size_t min_size)
62 {
63 uint8_t **p = ptr;
64 if (min_size > SIZE_MAX - AV_INPUT_BUFFER_PADDING_SIZE) {
65 av_freep(p);
66 *size = 0;
67 return;
68 }
69 av_fast_malloc(p, size, min_size + AV_INPUT_BUFFER_PADDING_SIZE);
70 if (*p)
71 memset(*p, 0, min_size + AV_INPUT_BUFFER_PADDING_SIZE);
72 }
73
av_codec_is_encoder(const AVCodec * avcodec)74 int av_codec_is_encoder(const AVCodec *avcodec)
75 {
76 const FFCodec *const codec = ffcodec(avcodec);
77 return codec && (codec->cb_type == FF_CODEC_CB_TYPE_ENCODE ||
78 codec->cb_type == FF_CODEC_CB_TYPE_ENCODE_SUB ||
79 codec->cb_type == FF_CODEC_CB_TYPE_RECEIVE_PACKET);
80 }
81
av_codec_is_decoder(const AVCodec * avcodec)82 int av_codec_is_decoder(const AVCodec *avcodec)
83 {
84 const FFCodec *const codec = ffcodec(avcodec);
85 return codec && (codec->cb_type == FF_CODEC_CB_TYPE_DECODE ||
86 codec->cb_type == FF_CODEC_CB_TYPE_DECODE_SUB ||
87 codec->cb_type == FF_CODEC_CB_TYPE_RECEIVE_FRAME);
88 }
89
ff_set_dimensions(AVCodecContext * s,int width,int height)90 int ff_set_dimensions(AVCodecContext *s, int width, int height)
91 {
92 int ret = av_image_check_size2(width, height, s->max_pixels, AV_PIX_FMT_NONE, 0, s);
93
94 if (ret < 0)
95 width = height = 0;
96
97 s->coded_width = width;
98 s->coded_height = height;
99 s->width = AV_CEIL_RSHIFT(width, s->lowres);
100 s->height = AV_CEIL_RSHIFT(height, s->lowres);
101
102 return ret;
103 }
104
ff_set_sar(AVCodecContext * avctx,AVRational sar)105 int ff_set_sar(AVCodecContext *avctx, AVRational sar)
106 {
107 int ret = av_image_check_sar(avctx->width, avctx->height, sar);
108
109 if (ret < 0) {
110 av_log(avctx, AV_LOG_WARNING, "ignoring invalid SAR: %d/%d\n",
111 sar.num, sar.den);
112 avctx->sample_aspect_ratio = (AVRational){ 0, 1 };
113 return ret;
114 } else {
115 avctx->sample_aspect_ratio = sar;
116 }
117 return 0;
118 }
119
ff_side_data_update_matrix_encoding(AVFrame * frame,enum AVMatrixEncoding matrix_encoding)120 int ff_side_data_update_matrix_encoding(AVFrame *frame,
121 enum AVMatrixEncoding matrix_encoding)
122 {
123 AVFrameSideData *side_data;
124 enum AVMatrixEncoding *data;
125
126 side_data = av_frame_get_side_data(frame, AV_FRAME_DATA_MATRIXENCODING);
127 if (!side_data)
128 side_data = av_frame_new_side_data(frame, AV_FRAME_DATA_MATRIXENCODING,
129 sizeof(enum AVMatrixEncoding));
130
131 if (!side_data)
132 return AVERROR(ENOMEM);
133
134 data = (enum AVMatrixEncoding*)side_data->data;
135 *data = matrix_encoding;
136
137 return 0;
138 }
139
avcodec_align_dimensions2(AVCodecContext * s,int * width,int * height,int linesize_align[AV_NUM_DATA_POINTERS])140 void avcodec_align_dimensions2(AVCodecContext *s, int *width, int *height,
141 int linesize_align[AV_NUM_DATA_POINTERS])
142 {
143 int i;
144 int w_align = 1;
145 int h_align = 1;
146 AVPixFmtDescriptor const *desc = av_pix_fmt_desc_get(s->pix_fmt);
147
148 if (desc) {
149 w_align = 1 << desc->log2_chroma_w;
150 h_align = 1 << desc->log2_chroma_h;
151 }
152
153 switch (s->pix_fmt) {
154 case AV_PIX_FMT_YUV420P:
155 case AV_PIX_FMT_YUYV422:
156 case AV_PIX_FMT_YVYU422:
157 case AV_PIX_FMT_UYVY422:
158 case AV_PIX_FMT_YUV422P:
159 case AV_PIX_FMT_YUV440P:
160 case AV_PIX_FMT_YUV444P:
161 case AV_PIX_FMT_GBRP:
162 case AV_PIX_FMT_GBRAP:
163 case AV_PIX_FMT_GRAY8:
164 case AV_PIX_FMT_GRAY16BE:
165 case AV_PIX_FMT_GRAY16LE:
166 case AV_PIX_FMT_YUVJ420P:
167 case AV_PIX_FMT_YUVJ422P:
168 case AV_PIX_FMT_YUVJ440P:
169 case AV_PIX_FMT_YUVJ444P:
170 case AV_PIX_FMT_YUVA420P:
171 case AV_PIX_FMT_YUVA422P:
172 case AV_PIX_FMT_YUVA444P:
173 case AV_PIX_FMT_YUV420P9LE:
174 case AV_PIX_FMT_YUV420P9BE:
175 case AV_PIX_FMT_YUV420P10LE:
176 case AV_PIX_FMT_YUV420P10BE:
177 case AV_PIX_FMT_YUV420P12LE:
178 case AV_PIX_FMT_YUV420P12BE:
179 case AV_PIX_FMT_YUV420P14LE:
180 case AV_PIX_FMT_YUV420P14BE:
181 case AV_PIX_FMT_YUV420P16LE:
182 case AV_PIX_FMT_YUV420P16BE:
183 case AV_PIX_FMT_YUVA420P9LE:
184 case AV_PIX_FMT_YUVA420P9BE:
185 case AV_PIX_FMT_YUVA420P10LE:
186 case AV_PIX_FMT_YUVA420P10BE:
187 case AV_PIX_FMT_YUVA420P16LE:
188 case AV_PIX_FMT_YUVA420P16BE:
189 case AV_PIX_FMT_YUV422P9LE:
190 case AV_PIX_FMT_YUV422P9BE:
191 case AV_PIX_FMT_YUV422P10LE:
192 case AV_PIX_FMT_YUV422P10BE:
193 case AV_PIX_FMT_YUV422P12LE:
194 case AV_PIX_FMT_YUV422P12BE:
195 case AV_PIX_FMT_YUV422P14LE:
196 case AV_PIX_FMT_YUV422P14BE:
197 case AV_PIX_FMT_YUV422P16LE:
198 case AV_PIX_FMT_YUV422P16BE:
199 case AV_PIX_FMT_YUVA422P9LE:
200 case AV_PIX_FMT_YUVA422P9BE:
201 case AV_PIX_FMT_YUVA422P10LE:
202 case AV_PIX_FMT_YUVA422P10BE:
203 case AV_PIX_FMT_YUVA422P12LE:
204 case AV_PIX_FMT_YUVA422P12BE:
205 case AV_PIX_FMT_YUVA422P16LE:
206 case AV_PIX_FMT_YUVA422P16BE:
207 case AV_PIX_FMT_YUV440P10LE:
208 case AV_PIX_FMT_YUV440P10BE:
209 case AV_PIX_FMT_YUV440P12LE:
210 case AV_PIX_FMT_YUV440P12BE:
211 case AV_PIX_FMT_YUV444P9LE:
212 case AV_PIX_FMT_YUV444P9BE:
213 case AV_PIX_FMT_YUV444P10LE:
214 case AV_PIX_FMT_YUV444P10BE:
215 case AV_PIX_FMT_YUV444P12LE:
216 case AV_PIX_FMT_YUV444P12BE:
217 case AV_PIX_FMT_YUV444P14LE:
218 case AV_PIX_FMT_YUV444P14BE:
219 case AV_PIX_FMT_YUV444P16LE:
220 case AV_PIX_FMT_YUV444P16BE:
221 case AV_PIX_FMT_YUVA444P9LE:
222 case AV_PIX_FMT_YUVA444P9BE:
223 case AV_PIX_FMT_YUVA444P10LE:
224 case AV_PIX_FMT_YUVA444P10BE:
225 case AV_PIX_FMT_YUVA444P12LE:
226 case AV_PIX_FMT_YUVA444P12BE:
227 case AV_PIX_FMT_YUVA444P16LE:
228 case AV_PIX_FMT_YUVA444P16BE:
229 case AV_PIX_FMT_GBRP9LE:
230 case AV_PIX_FMT_GBRP9BE:
231 case AV_PIX_FMT_GBRP10LE:
232 case AV_PIX_FMT_GBRP10BE:
233 case AV_PIX_FMT_GBRP12LE:
234 case AV_PIX_FMT_GBRP12BE:
235 case AV_PIX_FMT_GBRP14LE:
236 case AV_PIX_FMT_GBRP14BE:
237 case AV_PIX_FMT_GBRP16LE:
238 case AV_PIX_FMT_GBRP16BE:
239 case AV_PIX_FMT_GBRAP12LE:
240 case AV_PIX_FMT_GBRAP12BE:
241 case AV_PIX_FMT_GBRAP16LE:
242 case AV_PIX_FMT_GBRAP16BE:
243 w_align = 16; //FIXME assume 16 pixel per macroblock
244 h_align = 16 * 2; // interlaced needs 2 macroblocks height
245 if (s->codec_id == AV_CODEC_ID_BINKVIDEO)
246 w_align = 16*2;
247 break;
248 case AV_PIX_FMT_YUV411P:
249 case AV_PIX_FMT_YUVJ411P:
250 case AV_PIX_FMT_UYYVYY411:
251 w_align = 32;
252 h_align = 16 * 2;
253 break;
254 case AV_PIX_FMT_YUV410P:
255 if (s->codec_id == AV_CODEC_ID_SVQ1) {
256 w_align = 64;
257 h_align = 64;
258 }
259 break;
260 case AV_PIX_FMT_RGB555:
261 if (s->codec_id == AV_CODEC_ID_RPZA) {
262 w_align = 4;
263 h_align = 4;
264 }
265 if (s->codec_id == AV_CODEC_ID_INTERPLAY_VIDEO) {
266 w_align = 8;
267 h_align = 8;
268 }
269 break;
270 case AV_PIX_FMT_PAL8:
271 case AV_PIX_FMT_BGR8:
272 case AV_PIX_FMT_RGB8:
273 if (s->codec_id == AV_CODEC_ID_SMC ||
274 s->codec_id == AV_CODEC_ID_CINEPAK) {
275 w_align = 4;
276 h_align = 4;
277 }
278 if (s->codec_id == AV_CODEC_ID_JV ||
279 s->codec_id == AV_CODEC_ID_ARGO ||
280 s->codec_id == AV_CODEC_ID_INTERPLAY_VIDEO) {
281 w_align = 8;
282 h_align = 8;
283 }
284 if (s->codec_id == AV_CODEC_ID_MJPEG ||
285 s->codec_id == AV_CODEC_ID_MJPEGB ||
286 s->codec_id == AV_CODEC_ID_LJPEG ||
287 s->codec_id == AV_CODEC_ID_SMVJPEG ||
288 s->codec_id == AV_CODEC_ID_AMV ||
289 s->codec_id == AV_CODEC_ID_SP5X ||
290 s->codec_id == AV_CODEC_ID_JPEGLS) {
291 w_align = 8;
292 h_align = 2*8;
293 }
294 break;
295 case AV_PIX_FMT_BGR24:
296 if ((s->codec_id == AV_CODEC_ID_MSZH) ||
297 (s->codec_id == AV_CODEC_ID_ZLIB)) {
298 w_align = 4;
299 h_align = 4;
300 }
301 break;
302 case AV_PIX_FMT_RGB24:
303 if (s->codec_id == AV_CODEC_ID_CINEPAK) {
304 w_align = 4;
305 h_align = 4;
306 }
307 break;
308 case AV_PIX_FMT_BGR0:
309 if (s->codec_id == AV_CODEC_ID_ARGO) {
310 w_align = 8;
311 h_align = 8;
312 }
313 break;
314 default:
315 break;
316 }
317
318 if (s->codec_id == AV_CODEC_ID_IFF_ILBM) {
319 w_align = FFMAX(w_align, 16);
320 }
321
322 *width = FFALIGN(*width, w_align);
323 *height = FFALIGN(*height, h_align);
324 if (s->codec_id == AV_CODEC_ID_H264 || s->lowres ||
325 s->codec_id == AV_CODEC_ID_VC1 || s->codec_id == AV_CODEC_ID_WMV3 ||
326 s->codec_id == AV_CODEC_ID_VP5 || s->codec_id == AV_CODEC_ID_VP6 ||
327 s->codec_id == AV_CODEC_ID_VP6F || s->codec_id == AV_CODEC_ID_VP6A
328 ) {
329 // some of the optimized chroma MC reads one line too much
330 // which is also done in mpeg decoders with lowres > 0
331 *height += 2;
332
333 // H.264 uses edge emulation for out of frame motion vectors, for this
334 // it requires a temporary area large enough to hold a 21x21 block,
335 // increasing witdth ensure that the temporary area is large enough,
336 // the next rounded up width is 32
337 *width = FFMAX(*width, 32);
338 }
339 if (s->codec_id == AV_CODEC_ID_SVQ3) {
340 *width = FFMAX(*width, 32);
341 }
342
343 for (i = 0; i < 4; i++)
344 linesize_align[i] = STRIDE_ALIGN;
345 }
346
avcodec_align_dimensions(AVCodecContext * s,int * width,int * height)347 void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height)
348 {
349 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(s->pix_fmt);
350 int chroma_shift = desc->log2_chroma_w;
351 int linesize_align[AV_NUM_DATA_POINTERS];
352 int align;
353
354 avcodec_align_dimensions2(s, width, height, linesize_align);
355 align = FFMAX(linesize_align[0], linesize_align[3]);
356 linesize_align[1] <<= chroma_shift;
357 linesize_align[2] <<= chroma_shift;
358 align = FFMAX3(align, linesize_align[1], linesize_align[2]);
359 *width = FFALIGN(*width, align);
360 }
361
avcodec_enum_to_chroma_pos(int * xpos,int * ypos,enum AVChromaLocation pos)362 int avcodec_enum_to_chroma_pos(int *xpos, int *ypos, enum AVChromaLocation pos)
363 {
364 if (pos <= AVCHROMA_LOC_UNSPECIFIED || pos >= AVCHROMA_LOC_NB)
365 return AVERROR(EINVAL);
366 pos--;
367
368 *xpos = (pos&1) * 128;
369 *ypos = ((pos>>1)^(pos<4)) * 128;
370
371 return 0;
372 }
373
avcodec_chroma_pos_to_enum(int xpos,int ypos)374 enum AVChromaLocation avcodec_chroma_pos_to_enum(int xpos, int ypos)
375 {
376 int pos, xout, yout;
377
378 for (pos = AVCHROMA_LOC_UNSPECIFIED + 1; pos < AVCHROMA_LOC_NB; pos++) {
379 if (avcodec_enum_to_chroma_pos(&xout, &yout, pos) == 0 && xout == xpos && yout == ypos)
380 return pos;
381 }
382 return AVCHROMA_LOC_UNSPECIFIED;
383 }
384
avcodec_fill_audio_frame(AVFrame * frame,int nb_channels,enum AVSampleFormat sample_fmt,const uint8_t * buf,int buf_size,int align)385 int avcodec_fill_audio_frame(AVFrame *frame, int nb_channels,
386 enum AVSampleFormat sample_fmt, const uint8_t *buf,
387 int buf_size, int align)
388 {
389 int ch, planar, needed_size, ret = 0;
390
391 needed_size = av_samples_get_buffer_size(NULL, nb_channels,
392 frame->nb_samples, sample_fmt,
393 align);
394 if (buf_size < needed_size)
395 return AVERROR(EINVAL);
396
397 planar = av_sample_fmt_is_planar(sample_fmt);
398 if (planar && nb_channels > AV_NUM_DATA_POINTERS) {
399 if (!FF_ALLOCZ_TYPED_ARRAY(frame->extended_data, nb_channels))
400 return AVERROR(ENOMEM);
401 } else {
402 frame->extended_data = frame->data;
403 }
404
405 if ((ret = av_samples_fill_arrays(frame->extended_data, &frame->linesize[0],
406 (uint8_t *)(intptr_t)buf, nb_channels, frame->nb_samples,
407 sample_fmt, align)) < 0) {
408 if (frame->extended_data != frame->data)
409 av_freep(&frame->extended_data);
410 return ret;
411 }
412 if (frame->extended_data != frame->data) {
413 for (ch = 0; ch < AV_NUM_DATA_POINTERS; ch++)
414 frame->data[ch] = frame->extended_data[ch];
415 }
416
417 return ret;
418 }
419
ff_color_frame(AVFrame * frame,const int c[4])420 void ff_color_frame(AVFrame *frame, const int c[4])
421 {
422 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(frame->format);
423 int p, y;
424
425 av_assert0(desc->flags & AV_PIX_FMT_FLAG_PLANAR);
426
427 for (p = 0; p<desc->nb_components; p++) {
428 uint8_t *dst = frame->data[p];
429 int is_chroma = p == 1 || p == 2;
430 int bytes = is_chroma ? AV_CEIL_RSHIFT(frame->width, desc->log2_chroma_w) : frame->width;
431 int height = is_chroma ? AV_CEIL_RSHIFT(frame->height, desc->log2_chroma_h) : frame->height;
432 if (desc->comp[0].depth >= 9) {
433 ((uint16_t*)dst)[0] = c[p];
434 av_memcpy_backptr(dst + 2, 2, bytes - 2);
435 dst += frame->linesize[p];
436 for (y = 1; y < height; y++) {
437 memcpy(dst, frame->data[p], 2*bytes);
438 dst += frame->linesize[p];
439 }
440 } else {
441 for (y = 0; y < height; y++) {
442 memset(dst, c[p], bytes);
443 dst += frame->linesize[p];
444 }
445 }
446 }
447 }
448
avpriv_codec_get_cap_skip_frame_fill_param(const AVCodec * codec)449 int avpriv_codec_get_cap_skip_frame_fill_param(const AVCodec *codec){
450 return !!(ffcodec(codec)->caps_internal & FF_CODEC_CAP_SKIP_FRAME_FILL_PARAM);
451 }
452
avcodec_get_name(enum AVCodecID id)453 const char *avcodec_get_name(enum AVCodecID id)
454 {
455 const AVCodecDescriptor *cd;
456 const AVCodec *codec;
457
458 if (id == AV_CODEC_ID_NONE)
459 return "none";
460 cd = avcodec_descriptor_get(id);
461 if (cd)
462 return cd->name;
463 av_log(NULL, AV_LOG_WARNING, "Codec 0x%x is not in the full list.\n", id);
464 codec = avcodec_find_decoder(id);
465 if (codec)
466 return codec->name;
467 codec = avcodec_find_encoder(id);
468 if (codec)
469 return codec->name;
470 return "unknown_codec";
471 }
472
av_get_profile_name(const AVCodec * codec,int profile)473 const char *av_get_profile_name(const AVCodec *codec, int profile)
474 {
475 const AVProfile *p;
476 if (profile == FF_PROFILE_UNKNOWN || !codec->profiles)
477 return NULL;
478
479 for (p = codec->profiles; p->profile != FF_PROFILE_UNKNOWN; p++)
480 if (p->profile == profile)
481 return p->name;
482
483 return NULL;
484 }
485
avcodec_profile_name(enum AVCodecID codec_id,int profile)486 const char *avcodec_profile_name(enum AVCodecID codec_id, int profile)
487 {
488 const AVCodecDescriptor *desc = avcodec_descriptor_get(codec_id);
489 const AVProfile *p;
490
491 if (profile == FF_PROFILE_UNKNOWN || !desc || !desc->profiles)
492 return NULL;
493
494 for (p = desc->profiles; p->profile != FF_PROFILE_UNKNOWN; p++)
495 if (p->profile == profile)
496 return p->name;
497
498 return NULL;
499 }
500
av_get_exact_bits_per_sample(enum AVCodecID codec_id)501 int av_get_exact_bits_per_sample(enum AVCodecID codec_id)
502 {
503 switch (codec_id) {
504 case AV_CODEC_ID_DFPWM:
505 return 1;
506 case AV_CODEC_ID_8SVX_EXP:
507 case AV_CODEC_ID_8SVX_FIB:
508 case AV_CODEC_ID_ADPCM_ARGO:
509 case AV_CODEC_ID_ADPCM_CT:
510 case AV_CODEC_ID_ADPCM_IMA_ALP:
511 case AV_CODEC_ID_ADPCM_IMA_AMV:
512 case AV_CODEC_ID_ADPCM_IMA_APC:
513 case AV_CODEC_ID_ADPCM_IMA_APM:
514 case AV_CODEC_ID_ADPCM_IMA_EA_SEAD:
515 case AV_CODEC_ID_ADPCM_IMA_OKI:
516 case AV_CODEC_ID_ADPCM_IMA_WS:
517 case AV_CODEC_ID_ADPCM_IMA_SSI:
518 case AV_CODEC_ID_ADPCM_G722:
519 case AV_CODEC_ID_ADPCM_YAMAHA:
520 case AV_CODEC_ID_ADPCM_AICA:
521 return 4;
522 case AV_CODEC_ID_DSD_LSBF:
523 case AV_CODEC_ID_DSD_MSBF:
524 case AV_CODEC_ID_DSD_LSBF_PLANAR:
525 case AV_CODEC_ID_DSD_MSBF_PLANAR:
526 case AV_CODEC_ID_PCM_ALAW:
527 case AV_CODEC_ID_PCM_MULAW:
528 case AV_CODEC_ID_PCM_VIDC:
529 case AV_CODEC_ID_PCM_S8:
530 case AV_CODEC_ID_PCM_S8_PLANAR:
531 case AV_CODEC_ID_PCM_SGA:
532 case AV_CODEC_ID_PCM_U8:
533 case AV_CODEC_ID_SDX2_DPCM:
534 case AV_CODEC_ID_DERF_DPCM:
535 return 8;
536 case AV_CODEC_ID_PCM_S16BE:
537 case AV_CODEC_ID_PCM_S16BE_PLANAR:
538 case AV_CODEC_ID_PCM_S16LE:
539 case AV_CODEC_ID_PCM_S16LE_PLANAR:
540 case AV_CODEC_ID_PCM_U16BE:
541 case AV_CODEC_ID_PCM_U16LE:
542 return 16;
543 case AV_CODEC_ID_PCM_S24DAUD:
544 case AV_CODEC_ID_PCM_S24BE:
545 case AV_CODEC_ID_PCM_S24LE:
546 case AV_CODEC_ID_PCM_S24LE_PLANAR:
547 case AV_CODEC_ID_PCM_U24BE:
548 case AV_CODEC_ID_PCM_U24LE:
549 return 24;
550 case AV_CODEC_ID_PCM_S32BE:
551 case AV_CODEC_ID_PCM_S32LE:
552 case AV_CODEC_ID_PCM_S32LE_PLANAR:
553 case AV_CODEC_ID_PCM_U32BE:
554 case AV_CODEC_ID_PCM_U32LE:
555 case AV_CODEC_ID_PCM_F32BE:
556 case AV_CODEC_ID_PCM_F32LE:
557 case AV_CODEC_ID_PCM_F24LE:
558 case AV_CODEC_ID_PCM_F16LE:
559 return 32;
560 case AV_CODEC_ID_PCM_F64BE:
561 case AV_CODEC_ID_PCM_F64LE:
562 case AV_CODEC_ID_PCM_S64BE:
563 case AV_CODEC_ID_PCM_S64LE:
564 return 64;
565 default:
566 return 0;
567 }
568 }
569
av_get_pcm_codec(enum AVSampleFormat fmt,int be)570 enum AVCodecID av_get_pcm_codec(enum AVSampleFormat fmt, int be)
571 {
572 static const enum AVCodecID map[][2] = {
573 [AV_SAMPLE_FMT_U8 ] = { AV_CODEC_ID_PCM_U8, AV_CODEC_ID_PCM_U8 },
574 [AV_SAMPLE_FMT_S16 ] = { AV_CODEC_ID_PCM_S16LE, AV_CODEC_ID_PCM_S16BE },
575 [AV_SAMPLE_FMT_S32 ] = { AV_CODEC_ID_PCM_S32LE, AV_CODEC_ID_PCM_S32BE },
576 [AV_SAMPLE_FMT_FLT ] = { AV_CODEC_ID_PCM_F32LE, AV_CODEC_ID_PCM_F32BE },
577 [AV_SAMPLE_FMT_DBL ] = { AV_CODEC_ID_PCM_F64LE, AV_CODEC_ID_PCM_F64BE },
578 [AV_SAMPLE_FMT_U8P ] = { AV_CODEC_ID_PCM_U8, AV_CODEC_ID_PCM_U8 },
579 [AV_SAMPLE_FMT_S16P] = { AV_CODEC_ID_PCM_S16LE, AV_CODEC_ID_PCM_S16BE },
580 [AV_SAMPLE_FMT_S32P] = { AV_CODEC_ID_PCM_S32LE, AV_CODEC_ID_PCM_S32BE },
581 [AV_SAMPLE_FMT_S64P] = { AV_CODEC_ID_PCM_S64LE, AV_CODEC_ID_PCM_S64BE },
582 [AV_SAMPLE_FMT_FLTP] = { AV_CODEC_ID_PCM_F32LE, AV_CODEC_ID_PCM_F32BE },
583 [AV_SAMPLE_FMT_DBLP] = { AV_CODEC_ID_PCM_F64LE, AV_CODEC_ID_PCM_F64BE },
584 };
585 if (fmt < 0 || fmt >= FF_ARRAY_ELEMS(map))
586 return AV_CODEC_ID_NONE;
587 if (be < 0 || be > 1)
588 be = AV_NE(1, 0);
589 return map[fmt][be];
590 }
591
av_get_bits_per_sample(enum AVCodecID codec_id)592 int av_get_bits_per_sample(enum AVCodecID codec_id)
593 {
594 switch (codec_id) {
595 case AV_CODEC_ID_DFPWM:
596 return 1;
597 case AV_CODEC_ID_ADPCM_SBPRO_2:
598 return 2;
599 case AV_CODEC_ID_ADPCM_SBPRO_3:
600 return 3;
601 case AV_CODEC_ID_ADPCM_SBPRO_4:
602 case AV_CODEC_ID_ADPCM_IMA_WAV:
603 case AV_CODEC_ID_ADPCM_IMA_QT:
604 case AV_CODEC_ID_ADPCM_SWF:
605 case AV_CODEC_ID_ADPCM_MS:
606 return 4;
607 default:
608 return av_get_exact_bits_per_sample(codec_id);
609 }
610 }
611
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)612 static int get_audio_frame_duration(enum AVCodecID id, int sr, int ch, int ba,
613 uint32_t tag, int bits_per_coded_sample, int64_t bitrate,
614 uint8_t * extradata, int frame_size, int frame_bytes)
615 {
616 int bps = av_get_exact_bits_per_sample(id);
617 int framecount = (ba > 0 && frame_bytes / ba > 0) ? frame_bytes / ba : 1;
618
619 /* codecs with an exact constant bits per sample */
620 if (bps > 0 && ch > 0 && frame_bytes > 0 && ch < 32768 && bps < 32768)
621 return (frame_bytes * 8LL) / (bps * ch);
622 bps = bits_per_coded_sample;
623
624 /* codecs with a fixed packet duration */
625 switch (id) {
626 case AV_CODEC_ID_ADPCM_ADX: return 32;
627 case AV_CODEC_ID_ADPCM_IMA_QT: return 64;
628 case AV_CODEC_ID_ADPCM_EA_XAS: return 128;
629 case AV_CODEC_ID_AMR_NB:
630 case AV_CODEC_ID_EVRC:
631 case AV_CODEC_ID_GSM:
632 case AV_CODEC_ID_QCELP:
633 case AV_CODEC_ID_RA_288: return 160;
634 case AV_CODEC_ID_AMR_WB:
635 case AV_CODEC_ID_GSM_MS: return 320;
636 case AV_CODEC_ID_MP1: return 384;
637 case AV_CODEC_ID_ATRAC1: return 512;
638 case AV_CODEC_ID_ATRAC9:
639 case AV_CODEC_ID_ATRAC3:
640 if (framecount > INT_MAX/1024)
641 return 0;
642 return 1024 * framecount;
643 case AV_CODEC_ID_ATRAC3P: return 2048;
644 case AV_CODEC_ID_MP2:
645 case AV_CODEC_ID_MUSEPACK7: return 1152;
646 case AV_CODEC_ID_AC3: return 1536;
647 case AV_CODEC_ID_AVS3DA: return 1024; // avs3p3/audio vivid fixed frame size
648 }
649
650 if (sr > 0) {
651 /* calc from sample rate */
652 if (id == AV_CODEC_ID_TTA)
653 return 256ll * sr / 245;
654 else if (id == AV_CODEC_ID_DST)
655 return 588ll * sr / 44100;
656 else if (id == AV_CODEC_ID_BINKAUDIO_DCT) {
657 if (sr / 22050 > 22)
658 return 0;
659 return (480 << (sr / 22050));
660 }
661
662 if (id == AV_CODEC_ID_MP3)
663 return sr <= 24000 ? 576 : 1152;
664 }
665
666 if (ba > 0) {
667 /* calc from block_align */
668 if (id == AV_CODEC_ID_SIPR) {
669 switch (ba) {
670 case 20: return 160;
671 case 19: return 144;
672 case 29: return 288;
673 case 37: return 480;
674 }
675 } else if (id == AV_CODEC_ID_ILBC) {
676 switch (ba) {
677 case 38: return 160;
678 case 50: return 240;
679 }
680 }
681 }
682
683 if (frame_bytes > 0) {
684 /* calc from frame_bytes only */
685 if (id == AV_CODEC_ID_TRUESPEECH)
686 return 240 * (frame_bytes / 32);
687 if (id == AV_CODEC_ID_NELLYMOSER)
688 return 256 * (frame_bytes / 64);
689 if (id == AV_CODEC_ID_RA_144)
690 return 160 * (frame_bytes / 20);
691
692 if (bps > 0) {
693 /* calc from frame_bytes and bits_per_coded_sample */
694 if (id == AV_CODEC_ID_ADPCM_G726 || id == AV_CODEC_ID_ADPCM_G726LE)
695 return frame_bytes * 8 / bps;
696 }
697
698 if (ch > 0 && ch < INT_MAX/16) {
699 /* calc from frame_bytes and channels */
700 switch (id) {
701 case AV_CODEC_ID_FASTAUDIO:
702 return frame_bytes / (40 * ch) * 256;
703 case AV_CODEC_ID_ADPCM_IMA_MOFLEX:
704 return (frame_bytes - 4 * ch) / (128 * ch) * 256;
705 case AV_CODEC_ID_ADPCM_AFC:
706 return frame_bytes / (9 * ch) * 16;
707 case AV_CODEC_ID_ADPCM_PSX:
708 case AV_CODEC_ID_ADPCM_DTK:
709 frame_bytes /= 16 * ch;
710 if (frame_bytes > INT_MAX / 28)
711 return 0;
712 return frame_bytes * 28;
713 case AV_CODEC_ID_ADPCM_4XM:
714 case AV_CODEC_ID_ADPCM_IMA_ACORN:
715 case AV_CODEC_ID_ADPCM_IMA_DAT4:
716 case AV_CODEC_ID_ADPCM_IMA_ISS:
717 return (frame_bytes - 4 * ch) * 2 / ch;
718 case AV_CODEC_ID_ADPCM_IMA_SMJPEG:
719 return (frame_bytes - 4) * 2 / ch;
720 case AV_CODEC_ID_ADPCM_IMA_AMV:
721 return (frame_bytes - 8) * 2;
722 case AV_CODEC_ID_ADPCM_THP:
723 case AV_CODEC_ID_ADPCM_THP_LE:
724 if (extradata)
725 return frame_bytes * 14LL / (8 * ch);
726 break;
727 case AV_CODEC_ID_ADPCM_XA:
728 return (frame_bytes / 128) * 224 / ch;
729 case AV_CODEC_ID_INTERPLAY_DPCM:
730 return (frame_bytes - 6 - ch) / ch;
731 case AV_CODEC_ID_ROQ_DPCM:
732 return (frame_bytes - 8) / ch;
733 case AV_CODEC_ID_XAN_DPCM:
734 return (frame_bytes - 2 * ch) / ch;
735 case AV_CODEC_ID_MACE3:
736 return 3 * frame_bytes / ch;
737 case AV_CODEC_ID_MACE6:
738 return 6 * frame_bytes / ch;
739 case AV_CODEC_ID_PCM_LXF:
740 return 2 * (frame_bytes / (5 * ch));
741 case AV_CODEC_ID_IAC:
742 case AV_CODEC_ID_IMC:
743 return 4 * frame_bytes / ch;
744 }
745
746 if (tag) {
747 /* calc from frame_bytes, channels, and codec_tag */
748 if (id == AV_CODEC_ID_SOL_DPCM) {
749 if (tag == 3)
750 return frame_bytes / ch;
751 else
752 return frame_bytes * 2 / ch;
753 }
754 }
755
756 if (ba > 0) {
757 /* calc from frame_bytes, channels, and block_align */
758 int blocks = frame_bytes / ba;
759 int64_t tmp = 0;
760 switch (id) {
761 case AV_CODEC_ID_ADPCM_IMA_WAV:
762 if (bps < 2 || bps > 5)
763 return 0;
764 tmp = blocks * (1LL + (ba - 4 * ch) / (bps * ch) * 8);
765 break;
766 case AV_CODEC_ID_ADPCM_IMA_DK3:
767 tmp = blocks * (((ba - 16LL) * 2 / 3 * 4) / ch);
768 break;
769 case AV_CODEC_ID_ADPCM_IMA_DK4:
770 tmp = blocks * (1 + (ba - 4LL * ch) * 2 / ch);
771 break;
772 case AV_CODEC_ID_ADPCM_IMA_RAD:
773 tmp = blocks * ((ba - 4LL * ch) * 2 / ch);
774 break;
775 case AV_CODEC_ID_ADPCM_MS:
776 tmp = blocks * (2 + (ba - 7LL * ch) * 2LL / ch);
777 break;
778 case AV_CODEC_ID_ADPCM_MTAF:
779 tmp = blocks * (ba - 16LL) * 2 / ch;
780 break;
781 }
782 if (tmp) {
783 if (tmp != (int)tmp)
784 return 0;
785 return tmp;
786 }
787 }
788
789 if (bps > 0) {
790 /* calc from frame_bytes, channels, and bits_per_coded_sample */
791 switch (id) {
792 case AV_CODEC_ID_PCM_DVD:
793 if(bps<4 || frame_bytes<3)
794 return 0;
795 return 2 * ((frame_bytes - 3) / ((bps * 2 / 8) * ch));
796 case AV_CODEC_ID_PCM_BLURAY:
797 if(bps<4 || frame_bytes<4)
798 return 0;
799 return (frame_bytes - 4) / ((FFALIGN(ch, 2) * bps) / 8);
800 case AV_CODEC_ID_S302M:
801 return 2 * (frame_bytes / ((bps + 4) / 4)) / ch;
802 }
803 }
804 }
805 }
806
807 /* Fall back on using frame_size */
808 if (frame_size > 1 && frame_bytes)
809 return frame_size;
810
811 //For WMA we currently have no other means to calculate duration thus we
812 //do it here by assuming CBR, which is true for all known cases.
813 if (bitrate > 0 && frame_bytes > 0 && sr > 0 && ba > 1) {
814 if (id == AV_CODEC_ID_WMAV1 || id == AV_CODEC_ID_WMAV2)
815 return (frame_bytes * 8LL * sr) / bitrate;
816 }
817
818 return 0;
819 }
820
av_get_audio_frame_duration(AVCodecContext * avctx,int frame_bytes)821 int av_get_audio_frame_duration(AVCodecContext *avctx, int frame_bytes)
822 {
823 int channels = avctx->ch_layout.nb_channels;
824 int duration;
825 #if FF_API_OLD_CHANNEL_LAYOUT
826 FF_DISABLE_DEPRECATION_WARNINGS
827 if (!channels)
828 channels = avctx->channels;
829 FF_ENABLE_DEPRECATION_WARNINGS
830 #endif
831 duration = get_audio_frame_duration(avctx->codec_id, avctx->sample_rate,
832 channels, avctx->block_align,
833 avctx->codec_tag, avctx->bits_per_coded_sample,
834 avctx->bit_rate, avctx->extradata, avctx->frame_size,
835 frame_bytes);
836 return FFMAX(0, duration);
837 }
838
av_get_audio_frame_duration2(AVCodecParameters * par,int frame_bytes)839 int av_get_audio_frame_duration2(AVCodecParameters *par, int frame_bytes)
840 {
841 int channels = par->ch_layout.nb_channels;
842 int duration;
843 #if FF_API_OLD_CHANNEL_LAYOUT
844 FF_DISABLE_DEPRECATION_WARNINGS
845 if (!channels)
846 channels = par->channels;
847 FF_ENABLE_DEPRECATION_WARNINGS
848 #endif
849 duration = get_audio_frame_duration(par->codec_id, par->sample_rate,
850 channels, par->block_align,
851 par->codec_tag, par->bits_per_coded_sample,
852 par->bit_rate, par->extradata, par->frame_size,
853 frame_bytes);
854 return FFMAX(0, duration);
855 }
856
857 #if !HAVE_THREADS
ff_thread_init(AVCodecContext * s)858 int ff_thread_init(AVCodecContext *s)
859 {
860 return -1;
861 }
862
863 #endif
864
av_xiphlacing(unsigned char * s,unsigned int v)865 unsigned int av_xiphlacing(unsigned char *s, unsigned int v)
866 {
867 unsigned int n = 0;
868
869 while (v >= 0xff) {
870 *s++ = 0xff;
871 v -= 0xff;
872 n++;
873 }
874 *s = v;
875 n++;
876 return n;
877 }
878
ff_match_2uint16(const uint16_t (* tab)[2],int size,int a,int b)879 int ff_match_2uint16(const uint16_t(*tab)[2], int size, int a, int b)
880 {
881 int i;
882 for (i = 0; i < size && !(tab[i][0] == a && tab[i][1] == b); i++) ;
883 return i;
884 }
885
avcodec_get_hw_config(const AVCodec * avcodec,int index)886 const AVCodecHWConfig *avcodec_get_hw_config(const AVCodec *avcodec, int index)
887 {
888 const FFCodec *const codec = ffcodec(avcodec);
889 int i;
890 if (!codec->hw_configs || index < 0)
891 return NULL;
892 for (i = 0; i <= index; i++)
893 if (!codec->hw_configs[i])
894 return NULL;
895 return &codec->hw_configs[index]->public;
896 }
897
ff_thread_ref_frame(ThreadFrame * dst,const ThreadFrame * src)898 int ff_thread_ref_frame(ThreadFrame *dst, const ThreadFrame *src)
899 {
900 int ret;
901
902 dst->owner[0] = src->owner[0];
903 dst->owner[1] = src->owner[1];
904
905 ret = av_frame_ref(dst->f, src->f);
906 if (ret < 0)
907 return ret;
908
909 av_assert0(!dst->progress);
910
911 if (src->progress &&
912 !(dst->progress = av_buffer_ref(src->progress))) {
913 ff_thread_release_ext_buffer(dst->owner[0], dst);
914 return AVERROR(ENOMEM);
915 }
916
917 return 0;
918 }
919
920 #if !HAVE_THREADS
921
ff_thread_get_format(AVCodecContext * avctx,const enum AVPixelFormat * fmt)922 enum AVPixelFormat ff_thread_get_format(AVCodecContext *avctx, const enum AVPixelFormat *fmt)
923 {
924 return ff_get_format(avctx, fmt);
925 }
926
ff_thread_get_buffer(AVCodecContext * avctx,AVFrame * f,int flags)927 int ff_thread_get_buffer(AVCodecContext *avctx, AVFrame *f, int flags)
928 {
929 return ff_get_buffer(avctx, f, flags);
930 }
931
ff_thread_get_ext_buffer(AVCodecContext * avctx,ThreadFrame * f,int flags)932 int ff_thread_get_ext_buffer(AVCodecContext *avctx, ThreadFrame *f, int flags)
933 {
934 f->owner[0] = f->owner[1] = avctx;
935 return ff_get_buffer(avctx, f->f, flags);
936 }
937
ff_thread_release_buffer(AVCodecContext * avctx,AVFrame * f)938 void ff_thread_release_buffer(AVCodecContext *avctx, AVFrame *f)
939 {
940 if (f)
941 av_frame_unref(f);
942 }
943
ff_thread_release_ext_buffer(AVCodecContext * avctx,ThreadFrame * f)944 void ff_thread_release_ext_buffer(AVCodecContext *avctx, ThreadFrame *f)
945 {
946 f->owner[0] = f->owner[1] = NULL;
947 if (f->f)
948 av_frame_unref(f->f);
949 }
950
ff_thread_finish_setup(AVCodecContext * avctx)951 void ff_thread_finish_setup(AVCodecContext *avctx)
952 {
953 }
954
ff_thread_report_progress(ThreadFrame * f,int progress,int field)955 void ff_thread_report_progress(ThreadFrame *f, int progress, int field)
956 {
957 }
958
ff_thread_await_progress(ThreadFrame * f,int progress,int field)959 void ff_thread_await_progress(ThreadFrame *f, int progress, int field)
960 {
961 }
962
ff_thread_can_start_frame(AVCodecContext * avctx)963 int ff_thread_can_start_frame(AVCodecContext *avctx)
964 {
965 return 1;
966 }
967
ff_slice_thread_init_progress(AVCodecContext * avctx)968 int ff_slice_thread_init_progress(AVCodecContext *avctx)
969 {
970 return 0;
971 }
972
ff_alloc_entries(AVCodecContext * avctx,int count)973 int ff_alloc_entries(AVCodecContext *avctx, int count)
974 {
975 return 0;
976 }
977
ff_reset_entries(AVCodecContext * avctx)978 void ff_reset_entries(AVCodecContext *avctx)
979 {
980 }
981
ff_thread_await_progress2(AVCodecContext * avctx,int field,int thread,int shift)982 void ff_thread_await_progress2(AVCodecContext *avctx, int field, int thread, int shift)
983 {
984 }
985
ff_thread_report_progress2(AVCodecContext * avctx,int field,int thread,int n)986 void ff_thread_report_progress2(AVCodecContext *avctx, int field, int thread, int n)
987 {
988 }
989
990 #endif
991
avpriv_find_start_code(const uint8_t * av_restrict p,const uint8_t * end,uint32_t * av_restrict state)992 const uint8_t *avpriv_find_start_code(const uint8_t *av_restrict p,
993 const uint8_t *end,
994 uint32_t *av_restrict state)
995 {
996 int i;
997
998 av_assert0(p <= end);
999 if (p >= end)
1000 return end;
1001
1002 for (i = 0; i < 3; i++) {
1003 uint32_t tmp = *state << 8;
1004 *state = tmp + *(p++);
1005 if (tmp == 0x100 || p == end)
1006 return p;
1007 }
1008
1009 while (p < end) {
1010 if (p[-1] > 1 ) p += 3;
1011 else if (p[-2] ) p += 2;
1012 else if (p[-3]|(p[-1]-1)) p++;
1013 else {
1014 p++;
1015 break;
1016 }
1017 }
1018
1019 p = FFMIN(p, end) - 4;
1020 *state = AV_RB32(p);
1021
1022 return p + 4;
1023 }
1024
av_cpb_properties_alloc(size_t * size)1025 AVCPBProperties *av_cpb_properties_alloc(size_t *size)
1026 {
1027 AVCPBProperties *props = av_mallocz(sizeof(AVCPBProperties));
1028 if (!props)
1029 return NULL;
1030
1031 if (size)
1032 *size = sizeof(*props);
1033
1034 props->vbv_delay = UINT64_MAX;
1035
1036 return props;
1037 }
1038
ff_add_cpb_side_data(AVCodecContext * avctx)1039 AVCPBProperties *ff_add_cpb_side_data(AVCodecContext *avctx)
1040 {
1041 AVPacketSideData *tmp;
1042 AVCPBProperties *props;
1043 size_t size;
1044 int i;
1045
1046 for (i = 0; i < avctx->nb_coded_side_data; i++)
1047 if (avctx->coded_side_data[i].type == AV_PKT_DATA_CPB_PROPERTIES)
1048 return (AVCPBProperties *)avctx->coded_side_data[i].data;
1049
1050 props = av_cpb_properties_alloc(&size);
1051 if (!props)
1052 return NULL;
1053
1054 tmp = av_realloc_array(avctx->coded_side_data, avctx->nb_coded_side_data + 1, sizeof(*tmp));
1055 if (!tmp) {
1056 av_freep(&props);
1057 return NULL;
1058 }
1059
1060 avctx->coded_side_data = tmp;
1061 avctx->nb_coded_side_data++;
1062
1063 avctx->coded_side_data[avctx->nb_coded_side_data - 1].type = AV_PKT_DATA_CPB_PROPERTIES;
1064 avctx->coded_side_data[avctx->nb_coded_side_data - 1].data = (uint8_t*)props;
1065 avctx->coded_side_data[avctx->nb_coded_side_data - 1].size = size;
1066
1067 return props;
1068 }
1069
bcd2uint(uint8_t bcd)1070 static unsigned bcd2uint(uint8_t bcd)
1071 {
1072 unsigned low = bcd & 0xf;
1073 unsigned high = bcd >> 4;
1074 if (low > 9 || high > 9)
1075 return 0;
1076 return low + 10*high;
1077 }
1078
ff_alloc_timecode_sei(const AVFrame * frame,AVRational rate,size_t prefix_len,void ** data,size_t * sei_size)1079 int ff_alloc_timecode_sei(const AVFrame *frame, AVRational rate, size_t prefix_len,
1080 void **data, size_t *sei_size)
1081 {
1082 AVFrameSideData *sd = NULL;
1083 uint8_t *sei_data;
1084 PutBitContext pb;
1085 uint32_t *tc;
1086 int m;
1087
1088 if (frame)
1089 sd = av_frame_get_side_data(frame, AV_FRAME_DATA_S12M_TIMECODE);
1090
1091 if (!sd) {
1092 *data = NULL;
1093 return 0;
1094 }
1095 tc = (uint32_t*)sd->data;
1096 m = tc[0] & 3;
1097
1098 *sei_size = sizeof(uint32_t) * 4;
1099 *data = av_mallocz(*sei_size + prefix_len);
1100 if (!*data)
1101 return AVERROR(ENOMEM);
1102 sei_data = (uint8_t*)*data + prefix_len;
1103
1104 init_put_bits(&pb, sei_data, *sei_size);
1105 put_bits(&pb, 2, m); // num_clock_ts
1106
1107 for (int j = 1; j <= m; j++) {
1108 uint32_t tcsmpte = tc[j];
1109 unsigned hh = bcd2uint(tcsmpte & 0x3f); // 6-bit hours
1110 unsigned mm = bcd2uint(tcsmpte>>8 & 0x7f); // 7-bit minutes
1111 unsigned ss = bcd2uint(tcsmpte>>16 & 0x7f); // 7-bit seconds
1112 unsigned ff = bcd2uint(tcsmpte>>24 & 0x3f); // 6-bit frames
1113 unsigned drop = tcsmpte & 1<<30 && !0; // 1-bit drop if not arbitrary bit
1114
1115 /* Calculate frame number of HEVC by SMPTE ST 12-1:2014 Sec 12.2 if rate > 30FPS */
1116 if (av_cmp_q(rate, (AVRational) {30, 1}) == 1) {
1117 unsigned pc;
1118 ff *= 2;
1119 if (av_cmp_q(rate, (AVRational) {50, 1}) == 0)
1120 pc = !!(tcsmpte & 1 << 7);
1121 else
1122 pc = !!(tcsmpte & 1 << 23);
1123 ff = (ff + pc) & 0x7f;
1124 }
1125
1126 put_bits(&pb, 1, 1); // clock_timestamp_flag
1127 put_bits(&pb, 1, 1); // units_field_based_flag
1128 put_bits(&pb, 5, 0); // counting_type
1129 put_bits(&pb, 1, 1); // full_timestamp_flag
1130 put_bits(&pb, 1, 0); // discontinuity_flag
1131 put_bits(&pb, 1, drop);
1132 put_bits(&pb, 9, ff);
1133 put_bits(&pb, 6, ss);
1134 put_bits(&pb, 6, mm);
1135 put_bits(&pb, 5, hh);
1136 put_bits(&pb, 5, 0);
1137 }
1138 flush_put_bits(&pb);
1139
1140 return 0;
1141 }
1142
ff_guess_coded_bitrate(AVCodecContext * avctx)1143 int64_t ff_guess_coded_bitrate(AVCodecContext *avctx)
1144 {
1145 AVRational framerate = avctx->framerate;
1146 int bits_per_coded_sample = avctx->bits_per_coded_sample;
1147 int64_t bitrate;
1148
1149 if (!(framerate.num && framerate.den))
1150 framerate = av_inv_q(avctx->time_base);
1151 if (!(framerate.num && framerate.den))
1152 return 0;
1153
1154 if (!bits_per_coded_sample) {
1155 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(avctx->pix_fmt);
1156 bits_per_coded_sample = av_get_bits_per_pixel(desc);
1157 }
1158 bitrate = (int64_t)bits_per_coded_sample * avctx->width * avctx->height *
1159 framerate.num / framerate.den;
1160
1161 return bitrate;
1162 }
1163
ff_int_from_list_or_default(void * ctx,const char * val_name,int val,const int * array_valid_values,int default_value)1164 int ff_int_from_list_or_default(void *ctx, const char * val_name, int val,
1165 const int * array_valid_values, int default_value)
1166 {
1167 int i = 0, ref_val;
1168
1169 while (1) {
1170 ref_val = array_valid_values[i];
1171 if (ref_val == INT_MAX)
1172 break;
1173 if (val == ref_val)
1174 return val;
1175 i++;
1176 }
1177 /* val is not a valid value */
1178 av_log(ctx, AV_LOG_DEBUG,
1179 "%s %d are not supported. Set to default value : %d\n", val_name, val, default_value);
1180 return default_value;
1181 }
1182