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 } else if (s->codec_id == AV_CODEC_ID_SNOW) {
259 w_align = 16;
260 h_align = 16;
261 }
262 break;
263 case AV_PIX_FMT_RGB555:
264 if (s->codec_id == AV_CODEC_ID_RPZA) {
265 w_align = 4;
266 h_align = 4;
267 }
268 if (s->codec_id == AV_CODEC_ID_INTERPLAY_VIDEO) {
269 w_align = 8;
270 h_align = 8;
271 }
272 break;
273 case AV_PIX_FMT_PAL8:
274 case AV_PIX_FMT_BGR8:
275 case AV_PIX_FMT_RGB8:
276 if (s->codec_id == AV_CODEC_ID_SMC ||
277 s->codec_id == AV_CODEC_ID_CINEPAK) {
278 w_align = 4;
279 h_align = 4;
280 }
281 if (s->codec_id == AV_CODEC_ID_JV ||
282 s->codec_id == AV_CODEC_ID_ARGO ||
283 s->codec_id == AV_CODEC_ID_INTERPLAY_VIDEO) {
284 w_align = 8;
285 h_align = 8;
286 }
287 if (s->codec_id == AV_CODEC_ID_MJPEG ||
288 s->codec_id == AV_CODEC_ID_MJPEGB ||
289 s->codec_id == AV_CODEC_ID_LJPEG ||
290 s->codec_id == AV_CODEC_ID_SMVJPEG ||
291 s->codec_id == AV_CODEC_ID_AMV ||
292 s->codec_id == AV_CODEC_ID_SP5X ||
293 s->codec_id == AV_CODEC_ID_JPEGLS) {
294 w_align = 8;
295 h_align = 2*8;
296 }
297 break;
298 case AV_PIX_FMT_BGR24:
299 if ((s->codec_id == AV_CODEC_ID_MSZH) ||
300 (s->codec_id == AV_CODEC_ID_ZLIB)) {
301 w_align = 4;
302 h_align = 4;
303 }
304 break;
305 case AV_PIX_FMT_RGB24:
306 if (s->codec_id == AV_CODEC_ID_CINEPAK) {
307 w_align = 4;
308 h_align = 4;
309 }
310 break;
311 case AV_PIX_FMT_BGR0:
312 if (s->codec_id == AV_CODEC_ID_ARGO) {
313 w_align = 8;
314 h_align = 8;
315 }
316 break;
317 default:
318 break;
319 }
320
321 if (s->codec_id == AV_CODEC_ID_IFF_ILBM) {
322 w_align = FFMAX(w_align, 16);
323 }
324
325 *width = FFALIGN(*width, w_align);
326 *height = FFALIGN(*height, h_align);
327 if (s->codec_id == AV_CODEC_ID_H264 || s->lowres ||
328 s->codec_id == AV_CODEC_ID_VC1 || s->codec_id == AV_CODEC_ID_WMV3 ||
329 s->codec_id == AV_CODEC_ID_VP5 || s->codec_id == AV_CODEC_ID_VP6 ||
330 s->codec_id == AV_CODEC_ID_VP6F || s->codec_id == AV_CODEC_ID_VP6A
331 ) {
332 // some of the optimized chroma MC reads one line too much
333 // which is also done in mpeg decoders with lowres > 0
334 *height += 2;
335
336 // H.264 uses edge emulation for out of frame motion vectors, for this
337 // it requires a temporary area large enough to hold a 21x21 block,
338 // increasing witdth ensure that the temporary area is large enough,
339 // the next rounded up width is 32
340 *width = FFMAX(*width, 32);
341 }
342 if (s->codec_id == AV_CODEC_ID_SVQ3) {
343 *width = FFMAX(*width, 32);
344 }
345
346 for (i = 0; i < 4; i++)
347 linesize_align[i] = STRIDE_ALIGN;
348 }
349
avcodec_align_dimensions(AVCodecContext * s,int * width,int * height)350 void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height)
351 {
352 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(s->pix_fmt);
353 int chroma_shift = desc->log2_chroma_w;
354 int linesize_align[AV_NUM_DATA_POINTERS];
355 int align;
356
357 avcodec_align_dimensions2(s, width, height, linesize_align);
358 align = FFMAX(linesize_align[0], linesize_align[3]);
359 linesize_align[1] <<= chroma_shift;
360 linesize_align[2] <<= chroma_shift;
361 align = FFMAX3(align, linesize_align[1], linesize_align[2]);
362 *width = FFALIGN(*width, align);
363 }
364
avcodec_enum_to_chroma_pos(int * xpos,int * ypos,enum AVChromaLocation pos)365 int avcodec_enum_to_chroma_pos(int *xpos, int *ypos, enum AVChromaLocation pos)
366 {
367 if (pos <= AVCHROMA_LOC_UNSPECIFIED || pos >= AVCHROMA_LOC_NB)
368 return AVERROR(EINVAL);
369 pos--;
370
371 *xpos = (pos&1) * 128;
372 *ypos = ((pos>>1)^(pos<4)) * 128;
373
374 return 0;
375 }
376
avcodec_chroma_pos_to_enum(int xpos,int ypos)377 enum AVChromaLocation avcodec_chroma_pos_to_enum(int xpos, int ypos)
378 {
379 int pos, xout, yout;
380
381 for (pos = AVCHROMA_LOC_UNSPECIFIED + 1; pos < AVCHROMA_LOC_NB; pos++) {
382 if (avcodec_enum_to_chroma_pos(&xout, &yout, pos) == 0 && xout == xpos && yout == ypos)
383 return pos;
384 }
385 return AVCHROMA_LOC_UNSPECIFIED;
386 }
387
avcodec_fill_audio_frame(AVFrame * frame,int nb_channels,enum AVSampleFormat sample_fmt,const uint8_t * buf,int buf_size,int align)388 int avcodec_fill_audio_frame(AVFrame *frame, int nb_channels,
389 enum AVSampleFormat sample_fmt, const uint8_t *buf,
390 int buf_size, int align)
391 {
392 int ch, planar, needed_size, ret = 0;
393
394 needed_size = av_samples_get_buffer_size(NULL, nb_channels,
395 frame->nb_samples, sample_fmt,
396 align);
397 if (buf_size < needed_size)
398 return AVERROR(EINVAL);
399
400 planar = av_sample_fmt_is_planar(sample_fmt);
401 if (planar && nb_channels > AV_NUM_DATA_POINTERS) {
402 if (!FF_ALLOCZ_TYPED_ARRAY(frame->extended_data, nb_channels))
403 return AVERROR(ENOMEM);
404 } else {
405 frame->extended_data = frame->data;
406 }
407
408 if ((ret = av_samples_fill_arrays(frame->extended_data, &frame->linesize[0],
409 (uint8_t *)(intptr_t)buf, nb_channels, frame->nb_samples,
410 sample_fmt, align)) < 0) {
411 if (frame->extended_data != frame->data)
412 av_freep(&frame->extended_data);
413 return ret;
414 }
415 if (frame->extended_data != frame->data) {
416 for (ch = 0; ch < AV_NUM_DATA_POINTERS; ch++)
417 frame->data[ch] = frame->extended_data[ch];
418 }
419
420 return ret;
421 }
422
ff_color_frame(AVFrame * frame,const int c[4])423 void ff_color_frame(AVFrame *frame, const int c[4])
424 {
425 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(frame->format);
426 int p, y;
427
428 av_assert0(desc->flags & AV_PIX_FMT_FLAG_PLANAR);
429
430 for (p = 0; p<desc->nb_components; p++) {
431 uint8_t *dst = frame->data[p];
432 int is_chroma = p == 1 || p == 2;
433 int bytes = is_chroma ? AV_CEIL_RSHIFT(frame->width, desc->log2_chroma_w) : frame->width;
434 int height = is_chroma ? AV_CEIL_RSHIFT(frame->height, desc->log2_chroma_h) : frame->height;
435 if (desc->comp[0].depth >= 9) {
436 ((uint16_t*)dst)[0] = c[p];
437 av_memcpy_backptr(dst + 2, 2, bytes - 2);
438 dst += frame->linesize[p];
439 for (y = 1; y < height; y++) {
440 memcpy(dst, frame->data[p], 2*bytes);
441 dst += frame->linesize[p];
442 }
443 } else {
444 for (y = 0; y < height; y++) {
445 memset(dst, c[p], bytes);
446 dst += frame->linesize[p];
447 }
448 }
449 }
450 }
451
avpriv_codec_get_cap_skip_frame_fill_param(const AVCodec * codec)452 int avpriv_codec_get_cap_skip_frame_fill_param(const AVCodec *codec){
453 return !!(ffcodec(codec)->caps_internal & FF_CODEC_CAP_SKIP_FRAME_FILL_PARAM);
454 }
455
avcodec_get_name(enum AVCodecID id)456 const char *avcodec_get_name(enum AVCodecID id)
457 {
458 const AVCodecDescriptor *cd;
459 const AVCodec *codec;
460
461 if (id == AV_CODEC_ID_NONE)
462 return "none";
463 cd = avcodec_descriptor_get(id);
464 if (cd)
465 return cd->name;
466 av_log(NULL, AV_LOG_WARNING, "Codec 0x%x is not in the full list.\n", id);
467 codec = avcodec_find_decoder(id);
468 if (codec)
469 return codec->name;
470 codec = avcodec_find_encoder(id);
471 if (codec)
472 return codec->name;
473 return "unknown_codec";
474 }
475
av_get_profile_name(const AVCodec * codec,int profile)476 const char *av_get_profile_name(const AVCodec *codec, int profile)
477 {
478 const AVProfile *p;
479 if (profile == FF_PROFILE_UNKNOWN || !codec->profiles)
480 return NULL;
481
482 for (p = codec->profiles; p->profile != FF_PROFILE_UNKNOWN; p++)
483 if (p->profile == profile)
484 return p->name;
485
486 return NULL;
487 }
488
avcodec_profile_name(enum AVCodecID codec_id,int profile)489 const char *avcodec_profile_name(enum AVCodecID codec_id, int profile)
490 {
491 const AVCodecDescriptor *desc = avcodec_descriptor_get(codec_id);
492 const AVProfile *p;
493
494 if (profile == FF_PROFILE_UNKNOWN || !desc || !desc->profiles)
495 return NULL;
496
497 for (p = desc->profiles; p->profile != FF_PROFILE_UNKNOWN; p++)
498 if (p->profile == profile)
499 return p->name;
500
501 return NULL;
502 }
503
av_get_exact_bits_per_sample(enum AVCodecID codec_id)504 int av_get_exact_bits_per_sample(enum AVCodecID codec_id)
505 {
506 switch (codec_id) {
507 case AV_CODEC_ID_DFPWM:
508 return 1;
509 case AV_CODEC_ID_8SVX_EXP:
510 case AV_CODEC_ID_8SVX_FIB:
511 case AV_CODEC_ID_ADPCM_ARGO:
512 case AV_CODEC_ID_ADPCM_CT:
513 case AV_CODEC_ID_ADPCM_IMA_ALP:
514 case AV_CODEC_ID_ADPCM_IMA_AMV:
515 case AV_CODEC_ID_ADPCM_IMA_APC:
516 case AV_CODEC_ID_ADPCM_IMA_APM:
517 case AV_CODEC_ID_ADPCM_IMA_EA_SEAD:
518 case AV_CODEC_ID_ADPCM_IMA_OKI:
519 case AV_CODEC_ID_ADPCM_IMA_WS:
520 case AV_CODEC_ID_ADPCM_IMA_SSI:
521 case AV_CODEC_ID_ADPCM_G722:
522 case AV_CODEC_ID_ADPCM_YAMAHA:
523 case AV_CODEC_ID_ADPCM_AICA:
524 return 4;
525 case AV_CODEC_ID_DSD_LSBF:
526 case AV_CODEC_ID_DSD_MSBF:
527 case AV_CODEC_ID_DSD_LSBF_PLANAR:
528 case AV_CODEC_ID_DSD_MSBF_PLANAR:
529 case AV_CODEC_ID_PCM_ALAW:
530 case AV_CODEC_ID_PCM_MULAW:
531 case AV_CODEC_ID_PCM_VIDC:
532 case AV_CODEC_ID_PCM_S8:
533 case AV_CODEC_ID_PCM_S8_PLANAR:
534 case AV_CODEC_ID_PCM_SGA:
535 case AV_CODEC_ID_PCM_U8:
536 case AV_CODEC_ID_SDX2_DPCM:
537 case AV_CODEC_ID_DERF_DPCM:
538 return 8;
539 case AV_CODEC_ID_PCM_S16BE:
540 case AV_CODEC_ID_PCM_S16BE_PLANAR:
541 case AV_CODEC_ID_PCM_S16LE:
542 case AV_CODEC_ID_PCM_S16LE_PLANAR:
543 case AV_CODEC_ID_PCM_U16BE:
544 case AV_CODEC_ID_PCM_U16LE:
545 return 16;
546 case AV_CODEC_ID_PCM_S24DAUD:
547 case AV_CODEC_ID_PCM_S24BE:
548 case AV_CODEC_ID_PCM_S24LE:
549 case AV_CODEC_ID_PCM_S24LE_PLANAR:
550 case AV_CODEC_ID_PCM_U24BE:
551 case AV_CODEC_ID_PCM_U24LE:
552 return 24;
553 case AV_CODEC_ID_PCM_S32BE:
554 case AV_CODEC_ID_PCM_S32LE:
555 case AV_CODEC_ID_PCM_S32LE_PLANAR:
556 case AV_CODEC_ID_PCM_U32BE:
557 case AV_CODEC_ID_PCM_U32LE:
558 case AV_CODEC_ID_PCM_F32BE:
559 case AV_CODEC_ID_PCM_F32LE:
560 case AV_CODEC_ID_PCM_F24LE:
561 case AV_CODEC_ID_PCM_F16LE:
562 return 32;
563 case AV_CODEC_ID_PCM_F64BE:
564 case AV_CODEC_ID_PCM_F64LE:
565 case AV_CODEC_ID_PCM_S64BE:
566 case AV_CODEC_ID_PCM_S64LE:
567 return 64;
568 default:
569 return 0;
570 }
571 }
572
av_get_pcm_codec(enum AVSampleFormat fmt,int be)573 enum AVCodecID av_get_pcm_codec(enum AVSampleFormat fmt, int be)
574 {
575 static const enum AVCodecID map[][2] = {
576 [AV_SAMPLE_FMT_U8 ] = { AV_CODEC_ID_PCM_U8, AV_CODEC_ID_PCM_U8 },
577 [AV_SAMPLE_FMT_S16 ] = { AV_CODEC_ID_PCM_S16LE, AV_CODEC_ID_PCM_S16BE },
578 [AV_SAMPLE_FMT_S32 ] = { AV_CODEC_ID_PCM_S32LE, AV_CODEC_ID_PCM_S32BE },
579 [AV_SAMPLE_FMT_FLT ] = { AV_CODEC_ID_PCM_F32LE, AV_CODEC_ID_PCM_F32BE },
580 [AV_SAMPLE_FMT_DBL ] = { AV_CODEC_ID_PCM_F64LE, AV_CODEC_ID_PCM_F64BE },
581 [AV_SAMPLE_FMT_U8P ] = { AV_CODEC_ID_PCM_U8, AV_CODEC_ID_PCM_U8 },
582 [AV_SAMPLE_FMT_S16P] = { AV_CODEC_ID_PCM_S16LE, AV_CODEC_ID_PCM_S16BE },
583 [AV_SAMPLE_FMT_S32P] = { AV_CODEC_ID_PCM_S32LE, AV_CODEC_ID_PCM_S32BE },
584 [AV_SAMPLE_FMT_S64P] = { AV_CODEC_ID_PCM_S64LE, AV_CODEC_ID_PCM_S64BE },
585 [AV_SAMPLE_FMT_FLTP] = { AV_CODEC_ID_PCM_F32LE, AV_CODEC_ID_PCM_F32BE },
586 [AV_SAMPLE_FMT_DBLP] = { AV_CODEC_ID_PCM_F64LE, AV_CODEC_ID_PCM_F64BE },
587 };
588 if (fmt < 0 || fmt >= FF_ARRAY_ELEMS(map))
589 return AV_CODEC_ID_NONE;
590 if (be < 0 || be > 1)
591 be = AV_NE(1, 0);
592 return map[fmt][be];
593 }
594
av_get_bits_per_sample(enum AVCodecID codec_id)595 int av_get_bits_per_sample(enum AVCodecID codec_id)
596 {
597 switch (codec_id) {
598 case AV_CODEC_ID_DFPWM:
599 return 1;
600 case AV_CODEC_ID_ADPCM_SBPRO_2:
601 return 2;
602 case AV_CODEC_ID_ADPCM_SBPRO_3:
603 return 3;
604 case AV_CODEC_ID_ADPCM_SBPRO_4:
605 case AV_CODEC_ID_ADPCM_IMA_WAV:
606 case AV_CODEC_ID_ADPCM_IMA_QT:
607 case AV_CODEC_ID_ADPCM_SWF:
608 case AV_CODEC_ID_ADPCM_MS:
609 return 4;
610 default:
611 return av_get_exact_bits_per_sample(codec_id);
612 }
613 }
614
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)615 static int get_audio_frame_duration(enum AVCodecID id, int sr, int ch, int ba,
616 uint32_t tag, int bits_per_coded_sample, int64_t bitrate,
617 uint8_t * extradata, int frame_size, int frame_bytes)
618 {
619 int bps = av_get_exact_bits_per_sample(id);
620 int framecount = (ba > 0 && frame_bytes / ba > 0) ? frame_bytes / ba : 1;
621
622 /* codecs with an exact constant bits per sample */
623 if (bps > 0 && ch > 0 && frame_bytes > 0 && ch < 32768 && bps < 32768)
624 return (frame_bytes * 8LL) / (bps * ch);
625 bps = bits_per_coded_sample;
626
627 /* codecs with a fixed packet duration */
628 switch (id) {
629 case AV_CODEC_ID_ADPCM_ADX: return 32;
630 case AV_CODEC_ID_ADPCM_IMA_QT: return 64;
631 case AV_CODEC_ID_ADPCM_EA_XAS: return 128;
632 case AV_CODEC_ID_AMR_NB:
633 case AV_CODEC_ID_EVRC:
634 case AV_CODEC_ID_GSM:
635 case AV_CODEC_ID_QCELP:
636 case AV_CODEC_ID_RA_288: return 160;
637 case AV_CODEC_ID_AMR_WB:
638 case AV_CODEC_ID_GSM_MS: return 320;
639 case AV_CODEC_ID_MP1: return 384;
640 case AV_CODEC_ID_ATRAC1: return 512;
641 case AV_CODEC_ID_ATRAC9:
642 case AV_CODEC_ID_ATRAC3:
643 if (framecount > INT_MAX/1024)
644 return 0;
645 return 1024 * framecount;
646 case AV_CODEC_ID_ATRAC3P: return 2048;
647 case AV_CODEC_ID_MP2:
648 case AV_CODEC_ID_MUSEPACK7: return 1152;
649 case AV_CODEC_ID_AC3: return 1536;
650 #ifdef OHOS_AV3A_DEMUXER
651 case AV_CODEC_ID_AVS3DA: return 1024;
652 #endif
653 }
654
655 if (sr > 0) {
656 /* calc from sample rate */
657 if (id == AV_CODEC_ID_TTA)
658 return 256ll * sr / 245;
659 else if (id == AV_CODEC_ID_DST)
660 return 588ll * sr / 44100;
661 else if (id == AV_CODEC_ID_BINKAUDIO_DCT) {
662 if (sr / 22050 > 22)
663 return 0;
664 return (480 << (sr / 22050));
665 }
666
667 if (id == AV_CODEC_ID_MP3)
668 return sr <= 24000 ? 576 : 1152;
669 }
670
671 if (ba > 0) {
672 /* calc from block_align */
673 if (id == AV_CODEC_ID_SIPR) {
674 switch (ba) {
675 case 20: return 160;
676 case 19: return 144;
677 case 29: return 288;
678 case 37: return 480;
679 }
680 } else if (id == AV_CODEC_ID_ILBC) {
681 switch (ba) {
682 case 38: return 160;
683 case 50: return 240;
684 }
685 }
686 }
687
688 if (frame_bytes > 0) {
689 /* calc from frame_bytes only */
690 if (id == AV_CODEC_ID_TRUESPEECH)
691 return 240 * (frame_bytes / 32);
692 if (id == AV_CODEC_ID_NELLYMOSER)
693 return 256 * (frame_bytes / 64);
694 if (id == AV_CODEC_ID_RA_144)
695 return 160 * (frame_bytes / 20);
696
697 if (bps > 0) {
698 /* calc from frame_bytes and bits_per_coded_sample */
699 if (id == AV_CODEC_ID_ADPCM_G726 || id == AV_CODEC_ID_ADPCM_G726LE)
700 return frame_bytes * 8 / bps;
701 }
702
703 if (ch > 0 && ch < INT_MAX/16) {
704 /* calc from frame_bytes and channels */
705 switch (id) {
706 case AV_CODEC_ID_FASTAUDIO:
707 return frame_bytes / (40 * ch) * 256;
708 case AV_CODEC_ID_ADPCM_IMA_MOFLEX:
709 return (frame_bytes - 4 * ch) / (128 * ch) * 256;
710 case AV_CODEC_ID_ADPCM_AFC:
711 return frame_bytes / (9 * ch) * 16;
712 case AV_CODEC_ID_ADPCM_PSX:
713 case AV_CODEC_ID_ADPCM_DTK:
714 frame_bytes /= 16 * ch;
715 if (frame_bytes > INT_MAX / 28)
716 return 0;
717 return frame_bytes * 28;
718 case AV_CODEC_ID_ADPCM_4XM:
719 case AV_CODEC_ID_ADPCM_IMA_ACORN:
720 case AV_CODEC_ID_ADPCM_IMA_DAT4:
721 case AV_CODEC_ID_ADPCM_IMA_ISS:
722 return (frame_bytes - 4 * ch) * 2 / ch;
723 case AV_CODEC_ID_ADPCM_IMA_SMJPEG:
724 return (frame_bytes - 4) * 2 / ch;
725 case AV_CODEC_ID_ADPCM_IMA_AMV:
726 return (frame_bytes - 8) * 2;
727 case AV_CODEC_ID_ADPCM_THP:
728 case AV_CODEC_ID_ADPCM_THP_LE:
729 if (extradata)
730 return frame_bytes * 14LL / (8 * ch);
731 break;
732 case AV_CODEC_ID_ADPCM_XA:
733 return (frame_bytes / 128) * 224 / ch;
734 case AV_CODEC_ID_INTERPLAY_DPCM:
735 return (frame_bytes - 6 - ch) / ch;
736 case AV_CODEC_ID_ROQ_DPCM:
737 return (frame_bytes - 8) / ch;
738 case AV_CODEC_ID_XAN_DPCM:
739 return (frame_bytes - 2 * ch) / ch;
740 case AV_CODEC_ID_MACE3:
741 return 3 * frame_bytes / ch;
742 case AV_CODEC_ID_MACE6:
743 return 6 * frame_bytes / ch;
744 case AV_CODEC_ID_PCM_LXF:
745 return 2 * (frame_bytes / (5 * ch));
746 case AV_CODEC_ID_IAC:
747 case AV_CODEC_ID_IMC:
748 return 4 * frame_bytes / ch;
749 }
750
751 if (tag) {
752 /* calc from frame_bytes, channels, and codec_tag */
753 if (id == AV_CODEC_ID_SOL_DPCM) {
754 if (tag == 3)
755 return frame_bytes / ch;
756 else
757 return frame_bytes * 2 / ch;
758 }
759 }
760
761 if (ba > 0) {
762 /* calc from frame_bytes, channels, and block_align */
763 int blocks = frame_bytes / ba;
764 int64_t tmp = 0;
765 switch (id) {
766 case AV_CODEC_ID_ADPCM_IMA_WAV:
767 if (bps < 2 || bps > 5)
768 return 0;
769 tmp = blocks * (1LL + (ba - 4 * ch) / (bps * ch) * 8);
770 break;
771 case AV_CODEC_ID_ADPCM_IMA_DK3:
772 tmp = blocks * (((ba - 16LL) * 2 / 3 * 4) / ch);
773 break;
774 case AV_CODEC_ID_ADPCM_IMA_DK4:
775 tmp = blocks * (1 + (ba - 4LL * ch) * 2 / ch);
776 break;
777 case AV_CODEC_ID_ADPCM_IMA_RAD:
778 tmp = blocks * ((ba - 4LL * ch) * 2 / ch);
779 break;
780 case AV_CODEC_ID_ADPCM_MS:
781 tmp = blocks * (2 + (ba - 7LL * ch) * 2LL / ch);
782 break;
783 case AV_CODEC_ID_ADPCM_MTAF:
784 tmp = blocks * (ba - 16LL) * 2 / ch;
785 break;
786 }
787 if (tmp) {
788 if (tmp != (int)tmp)
789 return 0;
790 return tmp;
791 }
792 }
793
794 if (bps > 0) {
795 /* calc from frame_bytes, channels, and bits_per_coded_sample */
796 switch (id) {
797 case AV_CODEC_ID_PCM_DVD:
798 if(bps<4 || frame_bytes<3)
799 return 0;
800 return 2 * ((frame_bytes - 3) / ((bps * 2 / 8) * ch));
801 case AV_CODEC_ID_PCM_BLURAY:
802 if(bps<4 || frame_bytes<4)
803 return 0;
804 return (frame_bytes - 4) / ((FFALIGN(ch, 2) * bps) / 8);
805 case AV_CODEC_ID_S302M:
806 return 2 * (frame_bytes / ((bps + 4) / 4)) / ch;
807 }
808 }
809 }
810 }
811
812 /* Fall back on using frame_size */
813 if (frame_size > 1 && frame_bytes)
814 return frame_size;
815
816 //For WMA we currently have no other means to calculate duration thus we
817 //do it here by assuming CBR, which is true for all known cases.
818 if (bitrate > 0 && frame_bytes > 0 && sr > 0 && ba > 1) {
819 if (id == AV_CODEC_ID_WMAV1 || id == AV_CODEC_ID_WMAV2)
820 return (frame_bytes * 8LL * sr) / bitrate;
821 }
822
823 return 0;
824 }
825
av_get_audio_frame_duration(AVCodecContext * avctx,int frame_bytes)826 int av_get_audio_frame_duration(AVCodecContext *avctx, int frame_bytes)
827 {
828 int channels = avctx->ch_layout.nb_channels;
829 int duration;
830 #if FF_API_OLD_CHANNEL_LAYOUT
831 FF_DISABLE_DEPRECATION_WARNINGS
832 if (!channels)
833 channels = avctx->channels;
834 FF_ENABLE_DEPRECATION_WARNINGS
835 #endif
836 duration = get_audio_frame_duration(avctx->codec_id, avctx->sample_rate,
837 channels, avctx->block_align,
838 avctx->codec_tag, avctx->bits_per_coded_sample,
839 avctx->bit_rate, avctx->extradata, avctx->frame_size,
840 frame_bytes);
841 return FFMAX(0, duration);
842 }
843
av_get_audio_frame_duration2(AVCodecParameters * par,int frame_bytes)844 int av_get_audio_frame_duration2(AVCodecParameters *par, int frame_bytes)
845 {
846 int channels = par->ch_layout.nb_channels;
847 int duration;
848 #if FF_API_OLD_CHANNEL_LAYOUT
849 FF_DISABLE_DEPRECATION_WARNINGS
850 if (!channels)
851 channels = par->channels;
852 FF_ENABLE_DEPRECATION_WARNINGS
853 #endif
854 duration = get_audio_frame_duration(par->codec_id, par->sample_rate,
855 channels, par->block_align,
856 par->codec_tag, par->bits_per_coded_sample,
857 par->bit_rate, par->extradata, par->frame_size,
858 frame_bytes);
859 return FFMAX(0, duration);
860 }
861
862 #if !HAVE_THREADS
ff_thread_init(AVCodecContext * s)863 int ff_thread_init(AVCodecContext *s)
864 {
865 return -1;
866 }
867
868 #endif
869
av_xiphlacing(unsigned char * s,unsigned int v)870 unsigned int av_xiphlacing(unsigned char *s, unsigned int v)
871 {
872 unsigned int n = 0;
873
874 while (v >= 0xff) {
875 *s++ = 0xff;
876 v -= 0xff;
877 n++;
878 }
879 *s = v;
880 n++;
881 return n;
882 }
883
ff_match_2uint16(const uint16_t (* tab)[2],int size,int a,int b)884 int ff_match_2uint16(const uint16_t(*tab)[2], int size, int a, int b)
885 {
886 int i;
887 for (i = 0; i < size && !(tab[i][0] == a && tab[i][1] == b); i++) ;
888 return i;
889 }
890
avcodec_get_hw_config(const AVCodec * avcodec,int index)891 const AVCodecHWConfig *avcodec_get_hw_config(const AVCodec *avcodec, int index)
892 {
893 const FFCodec *const codec = ffcodec(avcodec);
894 int i;
895 if (!codec->hw_configs || index < 0)
896 return NULL;
897 for (i = 0; i <= index; i++)
898 if (!codec->hw_configs[i])
899 return NULL;
900 return &codec->hw_configs[index]->public;
901 }
902
ff_thread_ref_frame(ThreadFrame * dst,const ThreadFrame * src)903 int ff_thread_ref_frame(ThreadFrame *dst, const ThreadFrame *src)
904 {
905 int ret;
906
907 dst->owner[0] = src->owner[0];
908 dst->owner[1] = src->owner[1];
909
910 ret = av_frame_ref(dst->f, src->f);
911 if (ret < 0)
912 return ret;
913
914 av_assert0(!dst->progress);
915
916 if (src->progress &&
917 !(dst->progress = av_buffer_ref(src->progress))) {
918 ff_thread_release_ext_buffer(dst->owner[0], dst);
919 return AVERROR(ENOMEM);
920 }
921
922 return 0;
923 }
924
925 #if !HAVE_THREADS
926
ff_thread_get_format(AVCodecContext * avctx,const enum AVPixelFormat * fmt)927 enum AVPixelFormat ff_thread_get_format(AVCodecContext *avctx, const enum AVPixelFormat *fmt)
928 {
929 return ff_get_format(avctx, fmt);
930 }
931
ff_thread_get_buffer(AVCodecContext * avctx,AVFrame * f,int flags)932 int ff_thread_get_buffer(AVCodecContext *avctx, AVFrame *f, int flags)
933 {
934 return ff_get_buffer(avctx, f, flags);
935 }
936
ff_thread_get_ext_buffer(AVCodecContext * avctx,ThreadFrame * f,int flags)937 int ff_thread_get_ext_buffer(AVCodecContext *avctx, ThreadFrame *f, int flags)
938 {
939 f->owner[0] = f->owner[1] = avctx;
940 return ff_get_buffer(avctx, f->f, flags);
941 }
942
ff_thread_release_buffer(AVCodecContext * avctx,AVFrame * f)943 void ff_thread_release_buffer(AVCodecContext *avctx, AVFrame *f)
944 {
945 if (f)
946 av_frame_unref(f);
947 }
948
ff_thread_release_ext_buffer(AVCodecContext * avctx,ThreadFrame * f)949 void ff_thread_release_ext_buffer(AVCodecContext *avctx, ThreadFrame *f)
950 {
951 f->owner[0] = f->owner[1] = NULL;
952 if (f->f)
953 av_frame_unref(f->f);
954 }
955
ff_thread_finish_setup(AVCodecContext * avctx)956 void ff_thread_finish_setup(AVCodecContext *avctx)
957 {
958 }
959
ff_thread_report_progress(ThreadFrame * f,int progress,int field)960 void ff_thread_report_progress(ThreadFrame *f, int progress, int field)
961 {
962 }
963
ff_thread_await_progress(ThreadFrame * f,int progress,int field)964 void ff_thread_await_progress(ThreadFrame *f, int progress, int field)
965 {
966 }
967
ff_thread_can_start_frame(AVCodecContext * avctx)968 int ff_thread_can_start_frame(AVCodecContext *avctx)
969 {
970 return 1;
971 }
972
ff_slice_thread_init_progress(AVCodecContext * avctx)973 int ff_slice_thread_init_progress(AVCodecContext *avctx)
974 {
975 return 0;
976 }
977
ff_alloc_entries(AVCodecContext * avctx,int count)978 int ff_alloc_entries(AVCodecContext *avctx, int count)
979 {
980 return 0;
981 }
982
ff_reset_entries(AVCodecContext * avctx)983 void ff_reset_entries(AVCodecContext *avctx)
984 {
985 }
986
ff_thread_await_progress2(AVCodecContext * avctx,int field,int thread,int shift)987 void ff_thread_await_progress2(AVCodecContext *avctx, int field, int thread, int shift)
988 {
989 }
990
ff_thread_report_progress2(AVCodecContext * avctx,int field,int thread,int n)991 void ff_thread_report_progress2(AVCodecContext *avctx, int field, int thread, int n)
992 {
993 }
994
995 #endif
996
avpriv_find_start_code(const uint8_t * av_restrict p,const uint8_t * end,uint32_t * av_restrict state)997 const uint8_t *avpriv_find_start_code(const uint8_t *av_restrict p,
998 const uint8_t *end,
999 uint32_t *av_restrict state)
1000 {
1001 int i;
1002
1003 av_assert0(p <= end);
1004 if (p >= end)
1005 return end;
1006
1007 for (i = 0; i < 3; i++) {
1008 uint32_t tmp = *state << 8;
1009 *state = tmp + *(p++);
1010 if (tmp == 0x100 || p == end)
1011 return p;
1012 }
1013
1014 while (p < end) {
1015 if (p[-1] > 1 ) p += 3;
1016 else if (p[-2] ) p += 2;
1017 else if (p[-3]|(p[-1]-1)) p++;
1018 else {
1019 p++;
1020 break;
1021 }
1022 }
1023
1024 p = FFMIN(p, end) - 4;
1025 *state = AV_RB32(p);
1026
1027 return p + 4;
1028 }
1029
av_cpb_properties_alloc(size_t * size)1030 AVCPBProperties *av_cpb_properties_alloc(size_t *size)
1031 {
1032 AVCPBProperties *props = av_mallocz(sizeof(AVCPBProperties));
1033 if (!props)
1034 return NULL;
1035
1036 if (size)
1037 *size = sizeof(*props);
1038
1039 props->vbv_delay = UINT64_MAX;
1040
1041 return props;
1042 }
1043
ff_add_cpb_side_data(AVCodecContext * avctx)1044 AVCPBProperties *ff_add_cpb_side_data(AVCodecContext *avctx)
1045 {
1046 AVPacketSideData *tmp;
1047 AVCPBProperties *props;
1048 size_t size;
1049 int i;
1050
1051 for (i = 0; i < avctx->nb_coded_side_data; i++)
1052 if (avctx->coded_side_data[i].type == AV_PKT_DATA_CPB_PROPERTIES)
1053 return (AVCPBProperties *)avctx->coded_side_data[i].data;
1054
1055 props = av_cpb_properties_alloc(&size);
1056 if (!props)
1057 return NULL;
1058
1059 tmp = av_realloc_array(avctx->coded_side_data, avctx->nb_coded_side_data + 1, sizeof(*tmp));
1060 if (!tmp) {
1061 av_freep(&props);
1062 return NULL;
1063 }
1064
1065 avctx->coded_side_data = tmp;
1066 avctx->nb_coded_side_data++;
1067
1068 avctx->coded_side_data[avctx->nb_coded_side_data - 1].type = AV_PKT_DATA_CPB_PROPERTIES;
1069 avctx->coded_side_data[avctx->nb_coded_side_data - 1].data = (uint8_t*)props;
1070 avctx->coded_side_data[avctx->nb_coded_side_data - 1].size = size;
1071
1072 return props;
1073 }
1074
bcd2uint(uint8_t bcd)1075 static unsigned bcd2uint(uint8_t bcd)
1076 {
1077 unsigned low = bcd & 0xf;
1078 unsigned high = bcd >> 4;
1079 if (low > 9 || high > 9)
1080 return 0;
1081 return low + 10*high;
1082 }
1083
ff_alloc_timecode_sei(const AVFrame * frame,AVRational rate,size_t prefix_len,void ** data,size_t * sei_size)1084 int ff_alloc_timecode_sei(const AVFrame *frame, AVRational rate, size_t prefix_len,
1085 void **data, size_t *sei_size)
1086 {
1087 AVFrameSideData *sd = NULL;
1088 uint8_t *sei_data;
1089 PutBitContext pb;
1090 uint32_t *tc;
1091 int m;
1092
1093 if (frame)
1094 sd = av_frame_get_side_data(frame, AV_FRAME_DATA_S12M_TIMECODE);
1095
1096 if (!sd) {
1097 *data = NULL;
1098 return 0;
1099 }
1100 tc = (uint32_t*)sd->data;
1101 m = tc[0] & 3;
1102
1103 *sei_size = sizeof(uint32_t) * 4;
1104 *data = av_mallocz(*sei_size + prefix_len);
1105 if (!*data)
1106 return AVERROR(ENOMEM);
1107 sei_data = (uint8_t*)*data + prefix_len;
1108
1109 init_put_bits(&pb, sei_data, *sei_size);
1110 put_bits(&pb, 2, m); // num_clock_ts
1111
1112 for (int j = 1; j <= m; j++) {
1113 uint32_t tcsmpte = tc[j];
1114 unsigned hh = bcd2uint(tcsmpte & 0x3f); // 6-bit hours
1115 unsigned mm = bcd2uint(tcsmpte>>8 & 0x7f); // 7-bit minutes
1116 unsigned ss = bcd2uint(tcsmpte>>16 & 0x7f); // 7-bit seconds
1117 unsigned ff = bcd2uint(tcsmpte>>24 & 0x3f); // 6-bit frames
1118 unsigned drop = tcsmpte & 1<<30 && !0; // 1-bit drop if not arbitrary bit
1119
1120 /* Calculate frame number of HEVC by SMPTE ST 12-1:2014 Sec 12.2 if rate > 30FPS */
1121 if (av_cmp_q(rate, (AVRational) {30, 1}) == 1) {
1122 unsigned pc;
1123 ff *= 2;
1124 if (av_cmp_q(rate, (AVRational) {50, 1}) == 0)
1125 pc = !!(tcsmpte & 1 << 7);
1126 else
1127 pc = !!(tcsmpte & 1 << 23);
1128 ff = (ff + pc) & 0x7f;
1129 }
1130
1131 put_bits(&pb, 1, 1); // clock_timestamp_flag
1132 put_bits(&pb, 1, 1); // units_field_based_flag
1133 put_bits(&pb, 5, 0); // counting_type
1134 put_bits(&pb, 1, 1); // full_timestamp_flag
1135 put_bits(&pb, 1, 0); // discontinuity_flag
1136 put_bits(&pb, 1, drop);
1137 put_bits(&pb, 9, ff);
1138 put_bits(&pb, 6, ss);
1139 put_bits(&pb, 6, mm);
1140 put_bits(&pb, 5, hh);
1141 put_bits(&pb, 5, 0);
1142 }
1143 flush_put_bits(&pb);
1144
1145 return 0;
1146 }
1147
ff_guess_coded_bitrate(AVCodecContext * avctx)1148 int64_t ff_guess_coded_bitrate(AVCodecContext *avctx)
1149 {
1150 AVRational framerate = avctx->framerate;
1151 int bits_per_coded_sample = avctx->bits_per_coded_sample;
1152 int64_t bitrate;
1153
1154 if (!(framerate.num && framerate.den))
1155 framerate = av_inv_q(avctx->time_base);
1156 if (!(framerate.num && framerate.den))
1157 return 0;
1158
1159 if (!bits_per_coded_sample) {
1160 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(avctx->pix_fmt);
1161 bits_per_coded_sample = av_get_bits_per_pixel(desc);
1162 }
1163 bitrate = (int64_t)bits_per_coded_sample * avctx->width * avctx->height *
1164 framerate.num / framerate.den;
1165
1166 return bitrate;
1167 }
1168
ff_int_from_list_or_default(void * ctx,const char * val_name,int val,const int * array_valid_values,int default_value)1169 int ff_int_from_list_or_default(void *ctx, const char * val_name, int val,
1170 const int * array_valid_values, int default_value)
1171 {
1172 int i = 0, ref_val;
1173
1174 while (1) {
1175 ref_val = array_valid_values[i];
1176 if (ref_val == INT_MAX)
1177 break;
1178 if (val == ref_val)
1179 return val;
1180 i++;
1181 }
1182 /* val is not a valid value */
1183 av_log(ctx, AV_LOG_DEBUG,
1184 "%s %d are not supported. Set to default value : %d\n", val_name, val, default_value);
1185 return default_value;
1186 }
1187