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/avstring.h"
31 #include "libavutil/intreadwrite.h"
32 #include "libavutil/mem_internal.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 "hwconfig.h"
39 #include "thread.h"
40 #include "internal.h"
41 #include "put_bits.h"
42 #include "raw.h"
43 #include "version.h"
44 #include <stdlib.h>
45 #include <stdarg.h>
46 #include <stdatomic.h>
47 #include <limits.h>
48 #include <float.h>
49
av_fast_padded_malloc(void * ptr,unsigned int * size,size_t min_size)50 void av_fast_padded_malloc(void *ptr, unsigned int *size, size_t min_size)
51 {
52 uint8_t **p = ptr;
53 if (min_size > SIZE_MAX - AV_INPUT_BUFFER_PADDING_SIZE) {
54 av_freep(p);
55 *size = 0;
56 return;
57 }
58 if (!ff_fast_malloc(p, size, min_size + AV_INPUT_BUFFER_PADDING_SIZE, 1))
59 memset(*p + min_size, 0, AV_INPUT_BUFFER_PADDING_SIZE);
60 }
61
av_fast_padded_mallocz(void * ptr,unsigned int * size,size_t min_size)62 void av_fast_padded_mallocz(void *ptr, unsigned int *size, size_t min_size)
63 {
64 uint8_t **p = ptr;
65 if (min_size > SIZE_MAX - AV_INPUT_BUFFER_PADDING_SIZE) {
66 av_freep(p);
67 *size = 0;
68 return;
69 }
70 if (!ff_fast_malloc(p, size, min_size + AV_INPUT_BUFFER_PADDING_SIZE, 1))
71 memset(*p, 0, min_size + AV_INPUT_BUFFER_PADDING_SIZE);
72 }
73
av_codec_is_encoder(const AVCodec * codec)74 int av_codec_is_encoder(const AVCodec *codec)
75 {
76 return codec && (codec->encode_sub || codec->encode2 || codec->receive_packet);
77 }
78
av_codec_is_decoder(const AVCodec * codec)79 int av_codec_is_decoder(const AVCodec *codec)
80 {
81 return codec && (codec->decode || codec->receive_frame);
82 }
83
ff_set_dimensions(AVCodecContext * s,int width,int height)84 int ff_set_dimensions(AVCodecContext *s, int width, int height)
85 {
86 int ret = av_image_check_size2(width, height, s->max_pixels, AV_PIX_FMT_NONE, 0, s);
87
88 if (ret < 0)
89 width = height = 0;
90
91 s->coded_width = width;
92 s->coded_height = height;
93 s->width = AV_CEIL_RSHIFT(width, s->lowres);
94 s->height = AV_CEIL_RSHIFT(height, s->lowres);
95
96 return ret;
97 }
98
ff_set_sar(AVCodecContext * avctx,AVRational sar)99 int ff_set_sar(AVCodecContext *avctx, AVRational sar)
100 {
101 int ret = av_image_check_sar(avctx->width, avctx->height, sar);
102
103 if (ret < 0) {
104 av_log(avctx, AV_LOG_WARNING, "ignoring invalid SAR: %d/%d\n",
105 sar.num, sar.den);
106 avctx->sample_aspect_ratio = (AVRational){ 0, 1 };
107 return ret;
108 } else {
109 avctx->sample_aspect_ratio = sar;
110 }
111 return 0;
112 }
113
ff_side_data_update_matrix_encoding(AVFrame * frame,enum AVMatrixEncoding matrix_encoding)114 int ff_side_data_update_matrix_encoding(AVFrame *frame,
115 enum AVMatrixEncoding matrix_encoding)
116 {
117 AVFrameSideData *side_data;
118 enum AVMatrixEncoding *data;
119
120 side_data = av_frame_get_side_data(frame, AV_FRAME_DATA_MATRIXENCODING);
121 if (!side_data)
122 side_data = av_frame_new_side_data(frame, AV_FRAME_DATA_MATRIXENCODING,
123 sizeof(enum AVMatrixEncoding));
124
125 if (!side_data)
126 return AVERROR(ENOMEM);
127
128 data = (enum AVMatrixEncoding*)side_data->data;
129 *data = matrix_encoding;
130
131 return 0;
132 }
133
avcodec_align_dimensions2(AVCodecContext * s,int * width,int * height,int linesize_align[AV_NUM_DATA_POINTERS])134 void avcodec_align_dimensions2(AVCodecContext *s, int *width, int *height,
135 int linesize_align[AV_NUM_DATA_POINTERS])
136 {
137 int i;
138 int w_align = 1;
139 int h_align = 1;
140 AVPixFmtDescriptor const *desc = av_pix_fmt_desc_get(s->pix_fmt);
141
142 if (desc) {
143 w_align = 1 << desc->log2_chroma_w;
144 h_align = 1 << desc->log2_chroma_h;
145 }
146
147 switch (s->pix_fmt) {
148 case AV_PIX_FMT_YUV420P:
149 case AV_PIX_FMT_YUYV422:
150 case AV_PIX_FMT_YVYU422:
151 case AV_PIX_FMT_UYVY422:
152 case AV_PIX_FMT_YUV422P:
153 case AV_PIX_FMT_YUV440P:
154 case AV_PIX_FMT_YUV444P:
155 case AV_PIX_FMT_GBRP:
156 case AV_PIX_FMT_GBRAP:
157 case AV_PIX_FMT_GRAY8:
158 case AV_PIX_FMT_GRAY16BE:
159 case AV_PIX_FMT_GRAY16LE:
160 case AV_PIX_FMT_YUVJ420P:
161 case AV_PIX_FMT_YUVJ422P:
162 case AV_PIX_FMT_YUVJ440P:
163 case AV_PIX_FMT_YUVJ444P:
164 case AV_PIX_FMT_YUVA420P:
165 case AV_PIX_FMT_YUVA422P:
166 case AV_PIX_FMT_YUVA444P:
167 case AV_PIX_FMT_YUV420P9LE:
168 case AV_PIX_FMT_YUV420P9BE:
169 case AV_PIX_FMT_YUV420P10LE:
170 case AV_PIX_FMT_YUV420P10BE:
171 case AV_PIX_FMT_YUV420P12LE:
172 case AV_PIX_FMT_YUV420P12BE:
173 case AV_PIX_FMT_YUV420P14LE:
174 case AV_PIX_FMT_YUV420P14BE:
175 case AV_PIX_FMT_YUV420P16LE:
176 case AV_PIX_FMT_YUV420P16BE:
177 case AV_PIX_FMT_YUVA420P9LE:
178 case AV_PIX_FMT_YUVA420P9BE:
179 case AV_PIX_FMT_YUVA420P10LE:
180 case AV_PIX_FMT_YUVA420P10BE:
181 case AV_PIX_FMT_YUVA420P16LE:
182 case AV_PIX_FMT_YUVA420P16BE:
183 case AV_PIX_FMT_YUV422P9LE:
184 case AV_PIX_FMT_YUV422P9BE:
185 case AV_PIX_FMT_YUV422P10LE:
186 case AV_PIX_FMT_YUV422P10BE:
187 case AV_PIX_FMT_YUV422P12LE:
188 case AV_PIX_FMT_YUV422P12BE:
189 case AV_PIX_FMT_YUV422P14LE:
190 case AV_PIX_FMT_YUV422P14BE:
191 case AV_PIX_FMT_YUV422P16LE:
192 case AV_PIX_FMT_YUV422P16BE:
193 case AV_PIX_FMT_YUVA422P9LE:
194 case AV_PIX_FMT_YUVA422P9BE:
195 case AV_PIX_FMT_YUVA422P10LE:
196 case AV_PIX_FMT_YUVA422P10BE:
197 case AV_PIX_FMT_YUVA422P12LE:
198 case AV_PIX_FMT_YUVA422P12BE:
199 case AV_PIX_FMT_YUVA422P16LE:
200 case AV_PIX_FMT_YUVA422P16BE:
201 case AV_PIX_FMT_YUV440P10LE:
202 case AV_PIX_FMT_YUV440P10BE:
203 case AV_PIX_FMT_YUV440P12LE:
204 case AV_PIX_FMT_YUV440P12BE:
205 case AV_PIX_FMT_YUV444P9LE:
206 case AV_PIX_FMT_YUV444P9BE:
207 case AV_PIX_FMT_YUV444P10LE:
208 case AV_PIX_FMT_YUV444P10BE:
209 case AV_PIX_FMT_YUV444P12LE:
210 case AV_PIX_FMT_YUV444P12BE:
211 case AV_PIX_FMT_YUV444P14LE:
212 case AV_PIX_FMT_YUV444P14BE:
213 case AV_PIX_FMT_YUV444P16LE:
214 case AV_PIX_FMT_YUV444P16BE:
215 case AV_PIX_FMT_YUVA444P9LE:
216 case AV_PIX_FMT_YUVA444P9BE:
217 case AV_PIX_FMT_YUVA444P10LE:
218 case AV_PIX_FMT_YUVA444P10BE:
219 case AV_PIX_FMT_YUVA444P12LE:
220 case AV_PIX_FMT_YUVA444P12BE:
221 case AV_PIX_FMT_YUVA444P16LE:
222 case AV_PIX_FMT_YUVA444P16BE:
223 case AV_PIX_FMT_GBRP9LE:
224 case AV_PIX_FMT_GBRP9BE:
225 case AV_PIX_FMT_GBRP10LE:
226 case AV_PIX_FMT_GBRP10BE:
227 case AV_PIX_FMT_GBRP12LE:
228 case AV_PIX_FMT_GBRP12BE:
229 case AV_PIX_FMT_GBRP14LE:
230 case AV_PIX_FMT_GBRP14BE:
231 case AV_PIX_FMT_GBRP16LE:
232 case AV_PIX_FMT_GBRP16BE:
233 case AV_PIX_FMT_GBRAP12LE:
234 case AV_PIX_FMT_GBRAP12BE:
235 case AV_PIX_FMT_GBRAP16LE:
236 case AV_PIX_FMT_GBRAP16BE:
237 w_align = 16; //FIXME assume 16 pixel per macroblock
238 h_align = 16 * 2; // interlaced needs 2 macroblocks height
239 break;
240 case AV_PIX_FMT_YUV411P:
241 case AV_PIX_FMT_YUVJ411P:
242 case AV_PIX_FMT_UYYVYY411:
243 w_align = 32;
244 h_align = 16 * 2;
245 break;
246 case AV_PIX_FMT_YUV410P:
247 if (s->codec_id == AV_CODEC_ID_SVQ1) {
248 w_align = 64;
249 h_align = 64;
250 }
251 break;
252 case AV_PIX_FMT_RGB555:
253 if (s->codec_id == AV_CODEC_ID_RPZA) {
254 w_align = 4;
255 h_align = 4;
256 }
257 if (s->codec_id == AV_CODEC_ID_INTERPLAY_VIDEO) {
258 w_align = 8;
259 h_align = 8;
260 }
261 break;
262 case AV_PIX_FMT_PAL8:
263 case AV_PIX_FMT_BGR8:
264 case AV_PIX_FMT_RGB8:
265 if (s->codec_id == AV_CODEC_ID_SMC ||
266 s->codec_id == AV_CODEC_ID_CINEPAK) {
267 w_align = 4;
268 h_align = 4;
269 }
270 if (s->codec_id == AV_CODEC_ID_JV ||
271 s->codec_id == AV_CODEC_ID_INTERPLAY_VIDEO) {
272 w_align = 8;
273 h_align = 8;
274 }
275 break;
276 case AV_PIX_FMT_BGR24:
277 if ((s->codec_id == AV_CODEC_ID_MSZH) ||
278 (s->codec_id == AV_CODEC_ID_ZLIB)) {
279 w_align = 4;
280 h_align = 4;
281 }
282 break;
283 case AV_PIX_FMT_RGB24:
284 if (s->codec_id == AV_CODEC_ID_CINEPAK) {
285 w_align = 4;
286 h_align = 4;
287 }
288 break;
289 default:
290 break;
291 }
292
293 if (s->codec_id == AV_CODEC_ID_IFF_ILBM) {
294 w_align = FFMAX(w_align, 8);
295 }
296
297 *width = FFALIGN(*width, w_align);
298 *height = FFALIGN(*height, h_align);
299 if (s->codec_id == AV_CODEC_ID_H264 || s->lowres ||
300 s->codec_id == AV_CODEC_ID_VP5 || s->codec_id == AV_CODEC_ID_VP6 ||
301 s->codec_id == AV_CODEC_ID_VP6F || s->codec_id == AV_CODEC_ID_VP6A
302 ) {
303 // some of the optimized chroma MC reads one line too much
304 // which is also done in mpeg decoders with lowres > 0
305 *height += 2;
306
307 // H.264 uses edge emulation for out of frame motion vectors, for this
308 // it requires a temporary area large enough to hold a 21x21 block,
309 // increasing witdth ensure that the temporary area is large enough,
310 // the next rounded up width is 32
311 *width = FFMAX(*width, 32);
312 }
313
314 for (i = 0; i < 4; i++)
315 linesize_align[i] = STRIDE_ALIGN;
316 }
317
avcodec_align_dimensions(AVCodecContext * s,int * width,int * height)318 void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height)
319 {
320 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(s->pix_fmt);
321 int chroma_shift = desc->log2_chroma_w;
322 int linesize_align[AV_NUM_DATA_POINTERS];
323 int align;
324
325 avcodec_align_dimensions2(s, width, height, linesize_align);
326 align = FFMAX(linesize_align[0], linesize_align[3]);
327 linesize_align[1] <<= chroma_shift;
328 linesize_align[2] <<= chroma_shift;
329 align = FFMAX3(align, linesize_align[1], linesize_align[2]);
330 *width = FFALIGN(*width, align);
331 }
332
avcodec_enum_to_chroma_pos(int * xpos,int * ypos,enum AVChromaLocation pos)333 int avcodec_enum_to_chroma_pos(int *xpos, int *ypos, enum AVChromaLocation pos)
334 {
335 if (pos <= AVCHROMA_LOC_UNSPECIFIED || pos >= AVCHROMA_LOC_NB)
336 return AVERROR(EINVAL);
337 pos--;
338
339 *xpos = (pos&1) * 128;
340 *ypos = ((pos>>1)^(pos<4)) * 128;
341
342 return 0;
343 }
344
avcodec_chroma_pos_to_enum(int xpos,int ypos)345 enum AVChromaLocation avcodec_chroma_pos_to_enum(int xpos, int ypos)
346 {
347 int pos, xout, yout;
348
349 for (pos = AVCHROMA_LOC_UNSPECIFIED + 1; pos < AVCHROMA_LOC_NB; pos++) {
350 if (avcodec_enum_to_chroma_pos(&xout, &yout, pos) == 0 && xout == xpos && yout == ypos)
351 return pos;
352 }
353 return AVCHROMA_LOC_UNSPECIFIED;
354 }
355
avcodec_fill_audio_frame(AVFrame * frame,int nb_channels,enum AVSampleFormat sample_fmt,const uint8_t * buf,int buf_size,int align)356 int avcodec_fill_audio_frame(AVFrame *frame, int nb_channels,
357 enum AVSampleFormat sample_fmt, const uint8_t *buf,
358 int buf_size, int align)
359 {
360 int ch, planar, needed_size, ret = 0;
361
362 needed_size = av_samples_get_buffer_size(NULL, nb_channels,
363 frame->nb_samples, sample_fmt,
364 align);
365 if (buf_size < needed_size)
366 return AVERROR(EINVAL);
367
368 planar = av_sample_fmt_is_planar(sample_fmt);
369 if (planar && nb_channels > AV_NUM_DATA_POINTERS) {
370 if (!(frame->extended_data = av_mallocz_array(nb_channels,
371 sizeof(*frame->extended_data))))
372 return AVERROR(ENOMEM);
373 } else {
374 frame->extended_data = frame->data;
375 }
376
377 if ((ret = av_samples_fill_arrays(frame->extended_data, &frame->linesize[0],
378 (uint8_t *)(intptr_t)buf, nb_channels, frame->nb_samples,
379 sample_fmt, align)) < 0) {
380 if (frame->extended_data != frame->data)
381 av_freep(&frame->extended_data);
382 return ret;
383 }
384 if (frame->extended_data != frame->data) {
385 for (ch = 0; ch < AV_NUM_DATA_POINTERS; ch++)
386 frame->data[ch] = frame->extended_data[ch];
387 }
388
389 return ret;
390 }
391
ff_color_frame(AVFrame * frame,const int c[4])392 void ff_color_frame(AVFrame *frame, const int c[4])
393 {
394 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(frame->format);
395 int p, y;
396
397 av_assert0(desc->flags & AV_PIX_FMT_FLAG_PLANAR);
398
399 for (p = 0; p<desc->nb_components; p++) {
400 uint8_t *dst = frame->data[p];
401 int is_chroma = p == 1 || p == 2;
402 int bytes = is_chroma ? AV_CEIL_RSHIFT(frame->width, desc->log2_chroma_w) : frame->width;
403 int height = is_chroma ? AV_CEIL_RSHIFT(frame->height, desc->log2_chroma_h) : frame->height;
404 if (desc->comp[0].depth >= 9) {
405 ((uint16_t*)dst)[0] = c[p];
406 av_memcpy_backptr(dst + 2, 2, bytes - 2);
407 dst += frame->linesize[p];
408 for (y = 1; y < height; y++) {
409 memcpy(dst, frame->data[p], 2*bytes);
410 dst += frame->linesize[p];
411 }
412 } else {
413 for (y = 0; y < height; y++) {
414 memset(dst, c[p], bytes);
415 dst += frame->linesize[p];
416 }
417 }
418 }
419 }
420
avpriv_find_pix_fmt(const PixelFormatTag * tags,unsigned int fourcc)421 enum AVPixelFormat avpriv_find_pix_fmt(const PixelFormatTag *tags,
422 unsigned int fourcc)
423 {
424 while (tags->pix_fmt >= 0) {
425 if (tags->fourcc == fourcc)
426 return tags->pix_fmt;
427 tags++;
428 }
429 return AV_PIX_FMT_NONE;
430 }
431
432 #if FF_API_CODEC_GET_SET
MAKE_ACCESSORS(AVCodecContext,codec,AVRational,pkt_timebase)433 MAKE_ACCESSORS(AVCodecContext, codec, AVRational, pkt_timebase)
434 MAKE_ACCESSORS(AVCodecContext, codec, const AVCodecDescriptor *, codec_descriptor)
435 MAKE_ACCESSORS(AVCodecContext, codec, int, lowres)
436 MAKE_ACCESSORS(AVCodecContext, codec, int, seek_preroll)
437 MAKE_ACCESSORS(AVCodecContext, codec, uint16_t*, chroma_intra_matrix)
438
439 unsigned av_codec_get_codec_properties(const AVCodecContext *codec)
440 {
441 return codec->properties;
442 }
443
av_codec_get_max_lowres(const AVCodec * codec)444 int av_codec_get_max_lowres(const AVCodec *codec)
445 {
446 return codec->max_lowres;
447 }
448 #endif
449
avpriv_codec_get_cap_skip_frame_fill_param(const AVCodec * codec)450 int avpriv_codec_get_cap_skip_frame_fill_param(const AVCodec *codec){
451 return !!(codec->caps_internal & FF_CODEC_CAP_SKIP_FRAME_FILL_PARAM);
452 }
453
avcodec_get_name(enum AVCodecID id)454 const char *avcodec_get_name(enum AVCodecID id)
455 {
456 const AVCodecDescriptor *cd;
457 const AVCodec *codec;
458
459 if (id == AV_CODEC_ID_NONE)
460 return "none";
461 cd = avcodec_descriptor_get(id);
462 if (cd)
463 return cd->name;
464 av_log(NULL, AV_LOG_WARNING, "Codec 0x%x is not in the full list.\n", id);
465 codec = avcodec_find_decoder(id);
466 if (codec)
467 return codec->name;
468 codec = avcodec_find_encoder(id);
469 if (codec)
470 return codec->name;
471 return "unknown_codec";
472 }
473
474 #if FF_API_TAG_STRING
av_get_codec_tag_string(char * buf,size_t buf_size,unsigned int codec_tag)475 size_t av_get_codec_tag_string(char *buf, size_t buf_size, unsigned int codec_tag)
476 {
477 int i, len, ret = 0;
478
479 #define TAG_PRINT(x) \
480 (((x) >= '0' && (x) <= '9') || \
481 ((x) >= 'a' && (x) <= 'z') || ((x) >= 'A' && (x) <= 'Z') || \
482 ((x) == '.' || (x) == ' ' || (x) == '-' || (x) == '_'))
483
484 for (i = 0; i < 4; i++) {
485 len = snprintf(buf, buf_size,
486 TAG_PRINT(codec_tag & 0xFF) ? "%c" : "[%d]", codec_tag & 0xFF);
487 buf += len;
488 buf_size = buf_size > len ? buf_size - len : 0;
489 ret += len;
490 codec_tag >>= 8;
491 }
492 return ret;
493 }
494 #endif
495
av_get_profile_name(const AVCodec * codec,int profile)496 const char *av_get_profile_name(const AVCodec *codec, int profile)
497 {
498 const AVProfile *p;
499 if (profile == FF_PROFILE_UNKNOWN || !codec->profiles)
500 return NULL;
501
502 for (p = codec->profiles; p->profile != FF_PROFILE_UNKNOWN; p++)
503 if (p->profile == profile)
504 return p->name;
505
506 return NULL;
507 }
508
avcodec_profile_name(enum AVCodecID codec_id,int profile)509 const char *avcodec_profile_name(enum AVCodecID codec_id, int profile)
510 {
511 const AVCodecDescriptor *desc = avcodec_descriptor_get(codec_id);
512 const AVProfile *p;
513
514 if (profile == FF_PROFILE_UNKNOWN || !desc || !desc->profiles)
515 return NULL;
516
517 for (p = desc->profiles; p->profile != FF_PROFILE_UNKNOWN; p++)
518 if (p->profile == profile)
519 return p->name;
520
521 return NULL;
522 }
523
av_get_exact_bits_per_sample(enum AVCodecID codec_id)524 int av_get_exact_bits_per_sample(enum AVCodecID codec_id)
525 {
526 switch (codec_id) {
527 case AV_CODEC_ID_8SVX_EXP:
528 case AV_CODEC_ID_8SVX_FIB:
529 case AV_CODEC_ID_ADPCM_ARGO:
530 case AV_CODEC_ID_ADPCM_CT:
531 case AV_CODEC_ID_ADPCM_IMA_ALP:
532 case AV_CODEC_ID_ADPCM_IMA_AMV:
533 case AV_CODEC_ID_ADPCM_IMA_APC:
534 case AV_CODEC_ID_ADPCM_IMA_APM:
535 case AV_CODEC_ID_ADPCM_IMA_EA_SEAD:
536 case AV_CODEC_ID_ADPCM_IMA_OKI:
537 case AV_CODEC_ID_ADPCM_IMA_WS:
538 case AV_CODEC_ID_ADPCM_IMA_SSI:
539 case AV_CODEC_ID_ADPCM_G722:
540 case AV_CODEC_ID_ADPCM_YAMAHA:
541 case AV_CODEC_ID_ADPCM_AICA:
542 return 4;
543 case AV_CODEC_ID_DSD_LSBF:
544 case AV_CODEC_ID_DSD_MSBF:
545 case AV_CODEC_ID_DSD_LSBF_PLANAR:
546 case AV_CODEC_ID_DSD_MSBF_PLANAR:
547 case AV_CODEC_ID_PCM_ALAW:
548 case AV_CODEC_ID_PCM_MULAW:
549 case AV_CODEC_ID_PCM_VIDC:
550 case AV_CODEC_ID_PCM_S8:
551 case AV_CODEC_ID_PCM_S8_PLANAR:
552 case AV_CODEC_ID_PCM_SGA:
553 case AV_CODEC_ID_PCM_U8:
554 case AV_CODEC_ID_SDX2_DPCM:
555 case AV_CODEC_ID_DERF_DPCM:
556 return 8;
557 case AV_CODEC_ID_PCM_S16BE:
558 case AV_CODEC_ID_PCM_S16BE_PLANAR:
559 case AV_CODEC_ID_PCM_S16LE:
560 case AV_CODEC_ID_PCM_S16LE_PLANAR:
561 case AV_CODEC_ID_PCM_U16BE:
562 case AV_CODEC_ID_PCM_U16LE:
563 return 16;
564 case AV_CODEC_ID_PCM_S24DAUD:
565 case AV_CODEC_ID_PCM_S24BE:
566 case AV_CODEC_ID_PCM_S24LE:
567 case AV_CODEC_ID_PCM_S24LE_PLANAR:
568 case AV_CODEC_ID_PCM_U24BE:
569 case AV_CODEC_ID_PCM_U24LE:
570 return 24;
571 case AV_CODEC_ID_PCM_S32BE:
572 case AV_CODEC_ID_PCM_S32LE:
573 case AV_CODEC_ID_PCM_S32LE_PLANAR:
574 case AV_CODEC_ID_PCM_U32BE:
575 case AV_CODEC_ID_PCM_U32LE:
576 case AV_CODEC_ID_PCM_F32BE:
577 case AV_CODEC_ID_PCM_F32LE:
578 case AV_CODEC_ID_PCM_F24LE:
579 case AV_CODEC_ID_PCM_F16LE:
580 return 32;
581 case AV_CODEC_ID_PCM_F64BE:
582 case AV_CODEC_ID_PCM_F64LE:
583 case AV_CODEC_ID_PCM_S64BE:
584 case AV_CODEC_ID_PCM_S64LE:
585 return 64;
586 default:
587 return 0;
588 }
589 }
590
av_get_pcm_codec(enum AVSampleFormat fmt,int be)591 enum AVCodecID av_get_pcm_codec(enum AVSampleFormat fmt, int be)
592 {
593 static const enum AVCodecID map[][2] = {
594 [AV_SAMPLE_FMT_U8 ] = { AV_CODEC_ID_PCM_U8, AV_CODEC_ID_PCM_U8 },
595 [AV_SAMPLE_FMT_S16 ] = { AV_CODEC_ID_PCM_S16LE, AV_CODEC_ID_PCM_S16BE },
596 [AV_SAMPLE_FMT_S32 ] = { AV_CODEC_ID_PCM_S32LE, AV_CODEC_ID_PCM_S32BE },
597 [AV_SAMPLE_FMT_FLT ] = { AV_CODEC_ID_PCM_F32LE, AV_CODEC_ID_PCM_F32BE },
598 [AV_SAMPLE_FMT_DBL ] = { AV_CODEC_ID_PCM_F64LE, AV_CODEC_ID_PCM_F64BE },
599 [AV_SAMPLE_FMT_U8P ] = { AV_CODEC_ID_PCM_U8, AV_CODEC_ID_PCM_U8 },
600 [AV_SAMPLE_FMT_S16P] = { AV_CODEC_ID_PCM_S16LE, AV_CODEC_ID_PCM_S16BE },
601 [AV_SAMPLE_FMT_S32P] = { AV_CODEC_ID_PCM_S32LE, AV_CODEC_ID_PCM_S32BE },
602 [AV_SAMPLE_FMT_S64P] = { AV_CODEC_ID_PCM_S64LE, AV_CODEC_ID_PCM_S64BE },
603 [AV_SAMPLE_FMT_FLTP] = { AV_CODEC_ID_PCM_F32LE, AV_CODEC_ID_PCM_F32BE },
604 [AV_SAMPLE_FMT_DBLP] = { AV_CODEC_ID_PCM_F64LE, AV_CODEC_ID_PCM_F64BE },
605 };
606 if (fmt < 0 || fmt >= FF_ARRAY_ELEMS(map))
607 return AV_CODEC_ID_NONE;
608 if (be < 0 || be > 1)
609 be = AV_NE(1, 0);
610 return map[fmt][be];
611 }
612
av_get_bits_per_sample(enum AVCodecID codec_id)613 int av_get_bits_per_sample(enum AVCodecID codec_id)
614 {
615 switch (codec_id) {
616 case AV_CODEC_ID_ADPCM_SBPRO_2:
617 return 2;
618 case AV_CODEC_ID_ADPCM_SBPRO_3:
619 return 3;
620 case AV_CODEC_ID_ADPCM_SBPRO_4:
621 case AV_CODEC_ID_ADPCM_IMA_WAV:
622 case AV_CODEC_ID_ADPCM_IMA_QT:
623 case AV_CODEC_ID_ADPCM_SWF:
624 case AV_CODEC_ID_ADPCM_MS:
625 return 4;
626 default:
627 return av_get_exact_bits_per_sample(codec_id);
628 }
629 }
630
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)631 static int get_audio_frame_duration(enum AVCodecID id, int sr, int ch, int ba,
632 uint32_t tag, int bits_per_coded_sample, int64_t bitrate,
633 uint8_t * extradata, int frame_size, int frame_bytes)
634 {
635 int bps = av_get_exact_bits_per_sample(id);
636 int framecount = (ba > 0 && frame_bytes / ba > 0) ? frame_bytes / ba : 1;
637
638 /* codecs with an exact constant bits per sample */
639 if (bps > 0 && ch > 0 && frame_bytes > 0 && ch < 32768 && bps < 32768)
640 return (frame_bytes * 8LL) / (bps * ch);
641 bps = bits_per_coded_sample;
642
643 /* codecs with a fixed packet duration */
644 switch (id) {
645 case AV_CODEC_ID_ADPCM_ADX: return 32;
646 case AV_CODEC_ID_ADPCM_IMA_QT: return 64;
647 case AV_CODEC_ID_ADPCM_EA_XAS: return 128;
648 case AV_CODEC_ID_AMR_NB:
649 case AV_CODEC_ID_EVRC:
650 case AV_CODEC_ID_GSM:
651 case AV_CODEC_ID_QCELP:
652 case AV_CODEC_ID_RA_288: return 160;
653 case AV_CODEC_ID_AMR_WB:
654 case AV_CODEC_ID_GSM_MS: return 320;
655 case AV_CODEC_ID_MP1: return 384;
656 case AV_CODEC_ID_ATRAC1: return 512;
657 case AV_CODEC_ID_ATRAC9:
658 case AV_CODEC_ID_ATRAC3:
659 if (framecount > INT_MAX/1024)
660 return 0;
661 return 1024 * framecount;
662 case AV_CODEC_ID_ATRAC3P: return 2048;
663 case AV_CODEC_ID_MP2:
664 case AV_CODEC_ID_MUSEPACK7: return 1152;
665 case AV_CODEC_ID_AC3: return 1536;
666 }
667
668 if (sr > 0) {
669 /* calc from sample rate */
670 if (id == AV_CODEC_ID_TTA)
671 return 256 * sr / 245;
672 else if (id == AV_CODEC_ID_DST)
673 return 588 * sr / 44100;
674 else if (id == AV_CODEC_ID_BINKAUDIO_DCT) {
675 if (sr / 22050 > 22)
676 return 0;
677 return (480 << (sr / 22050));
678 }
679
680 if (id == AV_CODEC_ID_MP3)
681 return sr <= 24000 ? 576 : 1152;
682 }
683
684 if (ba > 0) {
685 /* calc from block_align */
686 if (id == AV_CODEC_ID_SIPR) {
687 switch (ba) {
688 case 20: return 160;
689 case 19: return 144;
690 case 29: return 288;
691 case 37: return 480;
692 }
693 } else if (id == AV_CODEC_ID_ILBC) {
694 switch (ba) {
695 case 38: return 160;
696 case 50: return 240;
697 }
698 }
699 }
700
701 if (frame_bytes > 0) {
702 /* calc from frame_bytes only */
703 if (id == AV_CODEC_ID_TRUESPEECH)
704 return 240 * (frame_bytes / 32);
705 if (id == AV_CODEC_ID_NELLYMOSER)
706 return 256 * (frame_bytes / 64);
707 if (id == AV_CODEC_ID_RA_144)
708 return 160 * (frame_bytes / 20);
709
710 if (bps > 0) {
711 /* calc from frame_bytes and bits_per_coded_sample */
712 if (id == AV_CODEC_ID_ADPCM_G726 || id == AV_CODEC_ID_ADPCM_G726LE)
713 return frame_bytes * 8 / bps;
714 }
715
716 if (ch > 0 && ch < INT_MAX/16) {
717 /* calc from frame_bytes and channels */
718 switch (id) {
719 case AV_CODEC_ID_FASTAUDIO:
720 return frame_bytes / (40 * ch) * 256;
721 case AV_CODEC_ID_ADPCM_IMA_MOFLEX:
722 return (frame_bytes - 4 * ch) / (128 * ch) * 256;
723 case AV_CODEC_ID_ADPCM_AFC:
724 return frame_bytes / (9 * ch) * 16;
725 case AV_CODEC_ID_ADPCM_PSX:
726 case AV_CODEC_ID_ADPCM_DTK:
727 frame_bytes /= 16 * ch;
728 if (frame_bytes > INT_MAX / 28)
729 return 0;
730 return frame_bytes * 28;
731 case AV_CODEC_ID_ADPCM_4XM:
732 case AV_CODEC_ID_ADPCM_IMA_DAT4:
733 case AV_CODEC_ID_ADPCM_IMA_ISS:
734 return (frame_bytes - 4 * ch) * 2 / ch;
735 case AV_CODEC_ID_ADPCM_IMA_SMJPEG:
736 return (frame_bytes - 4) * 2 / ch;
737 case AV_CODEC_ID_ADPCM_IMA_AMV:
738 return (frame_bytes - 8) * 2;
739 case AV_CODEC_ID_ADPCM_THP:
740 case AV_CODEC_ID_ADPCM_THP_LE:
741 if (extradata)
742 return frame_bytes * 14 / (8 * ch);
743 break;
744 case AV_CODEC_ID_ADPCM_XA:
745 return (frame_bytes / 128) * 224 / ch;
746 case AV_CODEC_ID_INTERPLAY_DPCM:
747 return (frame_bytes - 6 - ch) / ch;
748 case AV_CODEC_ID_ROQ_DPCM:
749 return (frame_bytes - 8) / ch;
750 case AV_CODEC_ID_XAN_DPCM:
751 return (frame_bytes - 2 * ch) / ch;
752 case AV_CODEC_ID_MACE3:
753 return 3 * frame_bytes / ch;
754 case AV_CODEC_ID_MACE6:
755 return 6 * frame_bytes / ch;
756 case AV_CODEC_ID_PCM_LXF:
757 return 2 * (frame_bytes / (5 * ch));
758 case AV_CODEC_ID_IAC:
759 case AV_CODEC_ID_IMC:
760 return 4 * frame_bytes / ch;
761 }
762
763 if (tag) {
764 /* calc from frame_bytes, channels, and codec_tag */
765 if (id == AV_CODEC_ID_SOL_DPCM) {
766 if (tag == 3)
767 return frame_bytes / ch;
768 else
769 return frame_bytes * 2 / ch;
770 }
771 }
772
773 if (ba > 0) {
774 /* calc from frame_bytes, channels, and block_align */
775 int blocks = frame_bytes / ba;
776 switch (id) {
777 case AV_CODEC_ID_ADPCM_IMA_WAV:
778 if (bps < 2 || bps > 5)
779 return 0;
780 return blocks * (1 + (ba - 4 * ch) / (bps * ch) * 8);
781 case AV_CODEC_ID_ADPCM_IMA_DK3:
782 return blocks * (((ba - 16) * 2 / 3 * 4) / ch);
783 case AV_CODEC_ID_ADPCM_IMA_DK4:
784 return blocks * (1 + (ba - 4 * ch) * 2 / ch);
785 case AV_CODEC_ID_ADPCM_IMA_RAD:
786 return blocks * ((ba - 4 * ch) * 2 / ch);
787 case AV_CODEC_ID_ADPCM_MS:
788 return blocks * (2 + (ba - 7 * ch) * 2LL / ch);
789 case AV_CODEC_ID_ADPCM_MTAF:
790 return blocks * (ba - 16) * 2 / ch;
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 return get_audio_frame_duration(avctx->codec_id, avctx->sample_rate,
829 avctx->channels, avctx->block_align,
830 avctx->codec_tag, avctx->bits_per_coded_sample,
831 avctx->bit_rate, avctx->extradata, avctx->frame_size,
832 frame_bytes);
833 }
834
av_get_audio_frame_duration2(AVCodecParameters * par,int frame_bytes)835 int av_get_audio_frame_duration2(AVCodecParameters *par, int frame_bytes)
836 {
837 return get_audio_frame_duration(par->codec_id, par->sample_rate,
838 par->channels, par->block_align,
839 par->codec_tag, par->bits_per_coded_sample,
840 par->bit_rate, par->extradata, par->frame_size,
841 frame_bytes);
842 }
843
844 #if !HAVE_THREADS
ff_thread_init(AVCodecContext * s)845 int ff_thread_init(AVCodecContext *s)
846 {
847 return -1;
848 }
849
850 #endif
851
av_xiphlacing(unsigned char * s,unsigned int v)852 unsigned int av_xiphlacing(unsigned char *s, unsigned int v)
853 {
854 unsigned int n = 0;
855
856 while (v >= 0xff) {
857 *s++ = 0xff;
858 v -= 0xff;
859 n++;
860 }
861 *s = v;
862 n++;
863 return n;
864 }
865
ff_match_2uint16(const uint16_t (* tab)[2],int size,int a,int b)866 int ff_match_2uint16(const uint16_t(*tab)[2], int size, int a, int b)
867 {
868 int i;
869 for (i = 0; i < size && !(tab[i][0] == a && tab[i][1] == b); i++) ;
870 return i;
871 }
872
avcodec_get_hw_config(const AVCodec * codec,int index)873 const AVCodecHWConfig *avcodec_get_hw_config(const AVCodec *codec, int index)
874 {
875 int i;
876 if (!codec->hw_configs || index < 0)
877 return NULL;
878 for (i = 0; i <= index; i++)
879 if (!codec->hw_configs[i])
880 return NULL;
881 return &codec->hw_configs[index]->public;
882 }
883
884 #if FF_API_USER_VISIBLE_AVHWACCEL
av_hwaccel_next(const AVHWAccel * hwaccel)885 AVHWAccel *av_hwaccel_next(const AVHWAccel *hwaccel)
886 {
887 return NULL;
888 }
889
av_register_hwaccel(AVHWAccel * hwaccel)890 void av_register_hwaccel(AVHWAccel *hwaccel)
891 {
892 }
893 #endif
894
avpriv_toupper4(unsigned int x)895 unsigned int avpriv_toupper4(unsigned int x)
896 {
897 return av_toupper(x & 0xFF) +
898 (av_toupper((x >> 8) & 0xFF) << 8) +
899 (av_toupper((x >> 16) & 0xFF) << 16) +
900 ((unsigned)av_toupper((x >> 24) & 0xFF) << 24);
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_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,ThreadFrame * f,int flags)932 int ff_thread_get_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,ThreadFrame * f)938 void ff_thread_release_buffer(AVCodecContext *avctx, ThreadFrame *f)
939 {
940 if (f->f)
941 av_frame_unref(f->f);
942 }
943
ff_thread_finish_setup(AVCodecContext * avctx)944 void ff_thread_finish_setup(AVCodecContext *avctx)
945 {
946 }
947
ff_thread_report_progress(ThreadFrame * f,int progress,int field)948 void ff_thread_report_progress(ThreadFrame *f, int progress, int field)
949 {
950 }
951
ff_thread_await_progress(ThreadFrame * f,int progress,int field)952 void ff_thread_await_progress(ThreadFrame *f, int progress, int field)
953 {
954 }
955
ff_thread_can_start_frame(AVCodecContext * avctx)956 int ff_thread_can_start_frame(AVCodecContext *avctx)
957 {
958 return 1;
959 }
960
ff_alloc_entries(AVCodecContext * avctx,int count)961 int ff_alloc_entries(AVCodecContext *avctx, int count)
962 {
963 return 0;
964 }
965
ff_reset_entries(AVCodecContext * avctx)966 void ff_reset_entries(AVCodecContext *avctx)
967 {
968 }
969
ff_thread_await_progress2(AVCodecContext * avctx,int field,int thread,int shift)970 void ff_thread_await_progress2(AVCodecContext *avctx, int field, int thread, int shift)
971 {
972 }
973
ff_thread_report_progress2(AVCodecContext * avctx,int field,int thread,int n)974 void ff_thread_report_progress2(AVCodecContext *avctx, int field, int thread, int n)
975 {
976 }
977
978 #endif
979
avpriv_find_start_code(const uint8_t * av_restrict p,const uint8_t * end,uint32_t * av_restrict state)980 const uint8_t *avpriv_find_start_code(const uint8_t *av_restrict p,
981 const uint8_t *end,
982 uint32_t *av_restrict state)
983 {
984 int i;
985
986 av_assert0(p <= end);
987 if (p >= end)
988 return end;
989
990 for (i = 0; i < 3; i++) {
991 uint32_t tmp = *state << 8;
992 *state = tmp + *(p++);
993 if (tmp == 0x100 || p == end)
994 return p;
995 }
996
997 while (p < end) {
998 if (p[-1] > 1 ) p += 3;
999 else if (p[-2] ) p += 2;
1000 else if (p[-3]|(p[-1]-1)) p++;
1001 else {
1002 p++;
1003 break;
1004 }
1005 }
1006
1007 p = FFMIN(p, end) - 4;
1008 *state = AV_RB32(p);
1009
1010 return p + 4;
1011 }
1012
av_cpb_properties_alloc(size_t * size)1013 AVCPBProperties *av_cpb_properties_alloc(size_t *size)
1014 {
1015 AVCPBProperties *props = av_mallocz(sizeof(AVCPBProperties));
1016 if (!props)
1017 return NULL;
1018
1019 if (size)
1020 *size = sizeof(*props);
1021
1022 props->vbv_delay = UINT64_MAX;
1023
1024 return props;
1025 }
1026
ff_add_cpb_side_data(AVCodecContext * avctx)1027 AVCPBProperties *ff_add_cpb_side_data(AVCodecContext *avctx)
1028 {
1029 AVPacketSideData *tmp;
1030 AVCPBProperties *props;
1031 size_t size;
1032 int i;
1033
1034 for (i = 0; i < avctx->nb_coded_side_data; i++)
1035 if (avctx->coded_side_data[i].type == AV_PKT_DATA_CPB_PROPERTIES)
1036 return (AVCPBProperties *)avctx->coded_side_data[i].data;
1037
1038 props = av_cpb_properties_alloc(&size);
1039 if (!props)
1040 return NULL;
1041
1042 tmp = av_realloc_array(avctx->coded_side_data, avctx->nb_coded_side_data + 1, sizeof(*tmp));
1043 if (!tmp) {
1044 av_freep(&props);
1045 return NULL;
1046 }
1047
1048 avctx->coded_side_data = tmp;
1049 avctx->nb_coded_side_data++;
1050
1051 avctx->coded_side_data[avctx->nb_coded_side_data - 1].type = AV_PKT_DATA_CPB_PROPERTIES;
1052 avctx->coded_side_data[avctx->nb_coded_side_data - 1].data = (uint8_t*)props;
1053 avctx->coded_side_data[avctx->nb_coded_side_data - 1].size = size;
1054
1055 return props;
1056 }
1057
bcd2uint(uint8_t bcd)1058 static unsigned bcd2uint(uint8_t bcd)
1059 {
1060 unsigned low = bcd & 0xf;
1061 unsigned high = bcd >> 4;
1062 if (low > 9 || high > 9)
1063 return 0;
1064 return low + 10*high;
1065 }
1066
ff_alloc_timecode_sei(const AVFrame * frame,AVRational rate,size_t prefix_len,void ** data,size_t * sei_size)1067 int ff_alloc_timecode_sei(const AVFrame *frame, AVRational rate, size_t prefix_len,
1068 void **data, size_t *sei_size)
1069 {
1070 AVFrameSideData *sd = NULL;
1071 uint8_t *sei_data;
1072 PutBitContext pb;
1073 uint32_t *tc;
1074 int m;
1075
1076 if (frame)
1077 sd = av_frame_get_side_data(frame, AV_FRAME_DATA_S12M_TIMECODE);
1078
1079 if (!sd) {
1080 *data = NULL;
1081 return 0;
1082 }
1083 tc = (uint32_t*)sd->data;
1084 m = tc[0] & 3;
1085
1086 *sei_size = sizeof(uint32_t) * 4;
1087 *data = av_mallocz(*sei_size + prefix_len);
1088 if (!*data)
1089 return AVERROR(ENOMEM);
1090 sei_data = (uint8_t*)*data + prefix_len;
1091
1092 init_put_bits(&pb, sei_data, *sei_size);
1093 put_bits(&pb, 2, m); // num_clock_ts
1094
1095 for (int j = 1; j <= m; j++) {
1096 uint32_t tcsmpte = tc[j];
1097 unsigned hh = bcd2uint(tcsmpte & 0x3f); // 6-bit hours
1098 unsigned mm = bcd2uint(tcsmpte>>8 & 0x7f); // 7-bit minutes
1099 unsigned ss = bcd2uint(tcsmpte>>16 & 0x7f); // 7-bit seconds
1100 unsigned ff = bcd2uint(tcsmpte>>24 & 0x3f); // 6-bit frames
1101 unsigned drop = tcsmpte & 1<<30 && !0; // 1-bit drop if not arbitrary bit
1102
1103 /* Calculate frame number of HEVC by SMPTE ST 12-1:2014 Sec 12.2 if rate > 30FPS */
1104 if (av_cmp_q(rate, (AVRational) {30, 1}) == 1) {
1105 unsigned pc;
1106 ff *= 2;
1107 if (av_cmp_q(rate, (AVRational) {50, 1}) == 0)
1108 pc = !!(tcsmpte & 1 << 7);
1109 else
1110 pc = !!(tcsmpte & 1 << 23);
1111 ff = (ff + pc) & 0x7f;
1112 }
1113
1114 put_bits(&pb, 1, 1); // clock_timestamp_flag
1115 put_bits(&pb, 1, 1); // units_field_based_flag
1116 put_bits(&pb, 5, 0); // counting_type
1117 put_bits(&pb, 1, 1); // full_timestamp_flag
1118 put_bits(&pb, 1, 0); // discontinuity_flag
1119 put_bits(&pb, 1, drop);
1120 put_bits(&pb, 9, ff);
1121 put_bits(&pb, 6, ss);
1122 put_bits(&pb, 6, mm);
1123 put_bits(&pb, 5, hh);
1124 put_bits(&pb, 5, 0);
1125 }
1126 flush_put_bits(&pb);
1127
1128 return 0;
1129 }
1130
ff_guess_coded_bitrate(AVCodecContext * avctx)1131 int64_t ff_guess_coded_bitrate(AVCodecContext *avctx)
1132 {
1133 AVRational framerate = avctx->framerate;
1134 int bits_per_coded_sample = avctx->bits_per_coded_sample;
1135 int64_t bitrate;
1136
1137 if (!(framerate.num && framerate.den))
1138 framerate = av_inv_q(avctx->time_base);
1139 if (!(framerate.num && framerate.den))
1140 return 0;
1141
1142 if (!bits_per_coded_sample) {
1143 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(avctx->pix_fmt);
1144 bits_per_coded_sample = av_get_bits_per_pixel(desc);
1145 }
1146 bitrate = (int64_t)bits_per_coded_sample * avctx->width * avctx->height *
1147 framerate.num / framerate.den;
1148
1149 return bitrate;
1150 }
1151
ff_int_from_list_or_default(void * ctx,const char * val_name,int val,const int * array_valid_values,int default_value)1152 int ff_int_from_list_or_default(void *ctx, const char * val_name, int val,
1153 const int * array_valid_values, int default_value)
1154 {
1155 int i = 0, ref_val;
1156
1157 while (1) {
1158 ref_val = array_valid_values[i];
1159 if (ref_val == INT_MAX)
1160 break;
1161 if (val == ref_val)
1162 return val;
1163 i++;
1164 }
1165 /* val is not a valid value */
1166 av_log(ctx, AV_LOG_DEBUG,
1167 "%s %d are not supported. Set to default value : %d\n", val_name, val, default_value);
1168 return default_value;
1169 }
1170