FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavcodec/utils.c
Date: 2025-07-28 20:30:09
Exec Total Coverage
Lines: 382 507 75.3%
Functions: 25 29 86.2%
Branches: 280 385 72.7%
Line Branch Exec Source
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 "libavutil/timecode_internal.h"
37 #include "avcodec.h"
38 #include "codec.h"
39 #include "codec_desc.h"
40 #include "codec_internal.h"
41 #include "codec_par.h"
42 #include "decode.h"
43 #include "hwconfig.h"
44 #include "libavutil/refstruct.h"
45 #include "thread.h"
46 #include "threadframe.h"
47 #include "internal.h"
48 #include "put_bits.h"
49 #include "startcode.h"
50 #include <stdlib.h>
51 #include <limits.h>
52
53 192556 void av_fast_padded_malloc(void *ptr, unsigned int *size, size_t min_size)
54 {
55 192556 uint8_t **p = ptr;
56
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 192556 if (min_size > SIZE_MAX - AV_INPUT_BUFFER_PADDING_SIZE) {
57 ✗ av_freep(p);
58 ✗ *size = 0;
59 ✗ return;
60 }
61 192556 av_fast_mallocz(p, size, min_size + AV_INPUT_BUFFER_PADDING_SIZE);
62
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 192556 if (*p)
63 192556 memset(*p + min_size, 0, AV_INPUT_BUFFER_PADDING_SIZE);
64 }
65
66 700 void av_fast_padded_mallocz(void *ptr, unsigned int *size, size_t min_size)
67 {
68 700 uint8_t **p = ptr;
69
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 700 if (min_size > SIZE_MAX - AV_INPUT_BUFFER_PADDING_SIZE) {
70 ✗ av_freep(p);
71 ✗ *size = 0;
72 ✗ return;
73 }
74 700 av_fast_malloc(p, size, min_size + AV_INPUT_BUFFER_PADDING_SIZE);
75
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 700 if (*p)
76 700 memset(*p, 0, min_size + AV_INPUT_BUFFER_PADDING_SIZE);
77 }
78
79 2361736 int av_codec_is_encoder(const AVCodec *avcodec)
80 {
81 2361736 const FFCodec *const codec = ffcodec(avcodec);
82
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 2361736 return codec && !codec->is_decoder;
83 }
84
85 476716 int av_codec_is_decoder(const AVCodec *avcodec)
86 {
87 476716 const FFCodec *const codec = ffcodec(avcodec);
88
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 476716 return codec && codec->is_decoder;
89 }
90
91 79653 int ff_set_dimensions(AVCodecContext *s, int width, int height)
92 {
93 79653 int ret = av_image_check_size2(width, height, s->max_pixels, AV_PIX_FMT_NONE, 0, s);
94
95
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 79653 if (ret < 0)
96 1 width = height = 0;
97
98 79653 s->coded_width = width;
99 79653 s->coded_height = height;
100 79653 s->width = AV_CEIL_RSHIFT(width, s->lowres);
101 79653 s->height = AV_CEIL_RSHIFT(height, s->lowres);
102
103 79653 return ret;
104 }
105
106 2930 int ff_set_sar(AVCodecContext *avctx, AVRational sar)
107 {
108 2930 int ret = av_image_check_sar(avctx->width, avctx->height, sar);
109
110
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 2930 if (ret < 0) {
111 5 av_log(avctx, AV_LOG_WARNING, "ignoring invalid SAR: %d/%d\n",
112 sar.num, sar.den);
113 5 avctx->sample_aspect_ratio = (AVRational){ 0, 1 };
114 5 return ret;
115 } else {
116 2925 avctx->sample_aspect_ratio = sar;
117 }
118 2925 return 0;
119 }
120
121 2978 int ff_side_data_update_matrix_encoding(AVFrame *frame,
122 enum AVMatrixEncoding matrix_encoding)
123 {
124 AVFrameSideData *side_data;
125 enum AVMatrixEncoding *data;
126
127 2978 side_data = av_frame_get_side_data(frame, AV_FRAME_DATA_MATRIXENCODING);
128
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 2978 if (!side_data)
129 2978 side_data = av_frame_new_side_data(frame, AV_FRAME_DATA_MATRIXENCODING,
130 sizeof(enum AVMatrixEncoding));
131
132
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 2978 if (!side_data)
133 ✗ return AVERROR(ENOMEM);
134
135 2978 data = (enum AVMatrixEncoding*)side_data->data;
136 2978 *data = matrix_encoding;
137
138 2978 return 0;
139 }
140
141 10545 void avcodec_align_dimensions2(AVCodecContext *s, int *width, int *height,
142 int linesize_align[AV_NUM_DATA_POINTERS])
143 {
144 int i;
145 10545 int w_align = 1;
146 10545 int h_align = 1;
147 10545 AVPixFmtDescriptor const *desc = av_pix_fmt_desc_get(s->pix_fmt);
148
149
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 10545 if (desc) {
150 10545 w_align = 1 << desc->log2_chroma_w;
151 10545 h_align = 1 << desc->log2_chroma_h;
152 }
153
154
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 10545 switch (s->pix_fmt) {
155 9620 case AV_PIX_FMT_YUV420P:
156 case AV_PIX_FMT_YUYV422:
157 case AV_PIX_FMT_YVYU422:
158 case AV_PIX_FMT_UYVY422:
159 case AV_PIX_FMT_YUV422P:
160 case AV_PIX_FMT_YUV440P:
161 case AV_PIX_FMT_YUV444P:
162 case AV_PIX_FMT_GBRP:
163 case AV_PIX_FMT_GBRAP:
164 case AV_PIX_FMT_GRAY8:
165 case AV_PIX_FMT_GRAY16BE:
166 case AV_PIX_FMT_GRAY16LE:
167 case AV_PIX_FMT_YUVJ420P:
168 case AV_PIX_FMT_YUVJ422P:
169 case AV_PIX_FMT_YUVJ440P:
170 case AV_PIX_FMT_YUVJ444P:
171 case AV_PIX_FMT_YUVA420P:
172 case AV_PIX_FMT_YUVA422P:
173 case AV_PIX_FMT_YUVA444P:
174 case AV_PIX_FMT_YUV420P9LE:
175 case AV_PIX_FMT_YUV420P9BE:
176 case AV_PIX_FMT_YUV420P10LE:
177 case AV_PIX_FMT_YUV420P10BE:
178 case AV_PIX_FMT_YUV420P12LE:
179 case AV_PIX_FMT_YUV420P12BE:
180 case AV_PIX_FMT_YUV420P14LE:
181 case AV_PIX_FMT_YUV420P14BE:
182 case AV_PIX_FMT_YUV420P16LE:
183 case AV_PIX_FMT_YUV420P16BE:
184 case AV_PIX_FMT_YUVA420P9LE:
185 case AV_PIX_FMT_YUVA420P9BE:
186 case AV_PIX_FMT_YUVA420P10LE:
187 case AV_PIX_FMT_YUVA420P10BE:
188 case AV_PIX_FMT_YUVA420P16LE:
189 case AV_PIX_FMT_YUVA420P16BE:
190 case AV_PIX_FMT_YUV422P9LE:
191 case AV_PIX_FMT_YUV422P9BE:
192 case AV_PIX_FMT_YUV422P10LE:
193 case AV_PIX_FMT_YUV422P10BE:
194 case AV_PIX_FMT_YUV422P12LE:
195 case AV_PIX_FMT_YUV422P12BE:
196 case AV_PIX_FMT_YUV422P14LE:
197 case AV_PIX_FMT_YUV422P14BE:
198 case AV_PIX_FMT_YUV422P16LE:
199 case AV_PIX_FMT_YUV422P16BE:
200 case AV_PIX_FMT_YUVA422P9LE:
201 case AV_PIX_FMT_YUVA422P9BE:
202 case AV_PIX_FMT_YUVA422P10LE:
203 case AV_PIX_FMT_YUVA422P10BE:
204 case AV_PIX_FMT_YUVA422P12LE:
205 case AV_PIX_FMT_YUVA422P12BE:
206 case AV_PIX_FMT_YUVA422P16LE:
207 case AV_PIX_FMT_YUVA422P16BE:
208 case AV_PIX_FMT_YUV440P10LE:
209 case AV_PIX_FMT_YUV440P10BE:
210 case AV_PIX_FMT_YUV440P12LE:
211 case AV_PIX_FMT_YUV440P12BE:
212 case AV_PIX_FMT_YUV444P9LE:
213 case AV_PIX_FMT_YUV444P9BE:
214 case AV_PIX_FMT_YUV444P10LE:
215 case AV_PIX_FMT_YUV444P10BE:
216 case AV_PIX_FMT_YUV444P12LE:
217 case AV_PIX_FMT_YUV444P12BE:
218 case AV_PIX_FMT_YUV444P14LE:
219 case AV_PIX_FMT_YUV444P14BE:
220 case AV_PIX_FMT_YUV444P16LE:
221 case AV_PIX_FMT_YUV444P16BE:
222 case AV_PIX_FMT_YUVA444P9LE:
223 case AV_PIX_FMT_YUVA444P9BE:
224 case AV_PIX_FMT_YUVA444P10LE:
225 case AV_PIX_FMT_YUVA444P10BE:
226 case AV_PIX_FMT_YUVA444P12LE:
227 case AV_PIX_FMT_YUVA444P12BE:
228 case AV_PIX_FMT_YUVA444P16LE:
229 case AV_PIX_FMT_YUVA444P16BE:
230 case AV_PIX_FMT_GBRP9LE:
231 case AV_PIX_FMT_GBRP9BE:
232 case AV_PIX_FMT_GBRP10LE:
233 case AV_PIX_FMT_GBRP10BE:
234 case AV_PIX_FMT_GBRP12LE:
235 case AV_PIX_FMT_GBRP12BE:
236 case AV_PIX_FMT_GBRP14LE:
237 case AV_PIX_FMT_GBRP14BE:
238 case AV_PIX_FMT_GBRP16LE:
239 case AV_PIX_FMT_GBRP16BE:
240 case AV_PIX_FMT_GBRAP12LE:
241 case AV_PIX_FMT_GBRAP12BE:
242 case AV_PIX_FMT_GBRAP16LE:
243 case AV_PIX_FMT_GBRAP16BE:
244 9620 w_align = 16; //FIXME assume 16 pixel per macroblock
245 9620 h_align = 16 * 2; // interlaced needs 2 macroblocks height
246
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 9620 if (s->codec_id == AV_CODEC_ID_BINKVIDEO)
247 3 w_align = 16*2;
248 9620 break;
249 26 case AV_PIX_FMT_YUV411P:
250 case AV_PIX_FMT_YUVJ411P:
251 case AV_PIX_FMT_UYYVYY411:
252 26 w_align = 32;
253 26 h_align = 16 * 2;
254 26 break;
255 21 case AV_PIX_FMT_YUV410P:
256
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 21 if (s->codec_id == AV_CODEC_ID_SVQ1) {
257 10 w_align = 64;
258 10 h_align = 64;
259
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 11 } else if (s->codec_id == AV_CODEC_ID_SNOW) {
260 ✗ w_align = 16;
261 ✗ h_align = 16;
262 }
263 21 break;
264 38 case AV_PIX_FMT_RGB555:
265
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 38 if (s->codec_id == AV_CODEC_ID_RPZA) {
266 5 w_align = 4;
267 5 h_align = 4;
268 }
269
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 38 if (s->codec_id == AV_CODEC_ID_INTERPLAY_VIDEO) {
270 1 w_align = 8;
271 1 h_align = 8;
272 }
273 38 break;
274 133 case AV_PIX_FMT_PAL8:
275 case AV_PIX_FMT_BGR8:
276 case AV_PIX_FMT_RGB8:
277
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 133 if (s->codec_id == AV_CODEC_ID_SMC ||
278
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 128 s->codec_id == AV_CODEC_ID_CINEPAK) {
279 6 w_align = 4;
280 6 h_align = 4;
281 }
282
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 133 if (s->codec_id == AV_CODEC_ID_JV ||
283
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 132 s->codec_id == AV_CODEC_ID_ARGO ||
284
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 132 s->codec_id == AV_CODEC_ID_INTERPLAY_VIDEO) {
285 2 w_align = 8;
286 2 h_align = 8;
287 }
288
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 133 if (s->codec_id == AV_CODEC_ID_MJPEG ||
289
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 133 s->codec_id == AV_CODEC_ID_MJPEGB ||
290
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 133 s->codec_id == AV_CODEC_ID_LJPEG ||
291
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 133 s->codec_id == AV_CODEC_ID_SMVJPEG ||
292
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 133 s->codec_id == AV_CODEC_ID_AMV ||
293
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 133 s->codec_id == AV_CODEC_ID_SP5X ||
294
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 133 s->codec_id == AV_CODEC_ID_JPEGLS) {
295 8 w_align = 8;
296 8 h_align = 2*8;
297 }
298 133 break;
299 81 case AV_PIX_FMT_BGR24:
300
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 81 if ((s->codec_id == AV_CODEC_ID_MSZH) ||
301
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 80 (s->codec_id == AV_CODEC_ID_ZLIB)) {
302 6 w_align = 4;
303 6 h_align = 4;
304 }
305 81 break;
306 215 case AV_PIX_FMT_RGB24:
307
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 215 if (s->codec_id == AV_CODEC_ID_CINEPAK) {
308 7 w_align = 4;
309 7 h_align = 4;
310 }
311 215 break;
312 23 case AV_PIX_FMT_BGR0:
313
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 23 if (s->codec_id == AV_CODEC_ID_ARGO) {
314 ✗ w_align = 8;
315 ✗ h_align = 8;
316 }
317 23 break;
318 388 default:
319 388 break;
320 }
321
322
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 10545 if (s->codec_id == AV_CODEC_ID_IFF_ILBM) {
323 2 w_align = FFMAX(w_align, 16);
324 }
325
326 10545 *width = FFALIGN(*width, w_align);
327 10545 *height = FFALIGN(*height, h_align);
328
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 10545 if (s->codec_id == AV_CODEC_ID_H264 || s->lowres ||
329
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 9952 s->codec_id == AV_CODEC_ID_VC1 || s->codec_id == AV_CODEC_ID_WMV3 ||
330
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 9930 s->codec_id == AV_CODEC_ID_VP5 || s->codec_id == AV_CODEC_ID_VP6 ||
331
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 9920 s->codec_id == AV_CODEC_ID_VP6F || s->codec_id == AV_CODEC_ID_VP6A
332 ) {
333 // some of the optimized chroma MC reads one line too much
334 // which is also done in mpeg decoders with lowres > 0
335 629 *height += 2;
336
337 // H.264 uses edge emulation for out of frame motion vectors, for this
338 // it requires a temporary area large enough to hold a 21x21 block,
339 // increasing witdth ensure that the temporary area is large enough,
340 // the next rounded up width is 32
341 629 *width = FFMAX(*width, 32);
342 }
343
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 10545 if (s->codec_id == AV_CODEC_ID_SVQ3) {
344 2618 *width = FFMAX(*width, 32);
345 }
346
347
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 52725 for (i = 0; i < 4; i++)
348 42180 linesize_align[i] = STRIDE_ALIGN;
349 10545 }
350
351 ✗ void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height)
352 {
353 ✗ const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(s->pix_fmt);
354 ✗ int chroma_shift = desc->log2_chroma_w;
355 int linesize_align[AV_NUM_DATA_POINTERS];
356 int align;
357
358 ✗ avcodec_align_dimensions2(s, width, height, linesize_align);
359 ✗ align = FFMAX(linesize_align[0], linesize_align[3]);
360 ✗ linesize_align[1] <<= chroma_shift;
361 ✗ linesize_align[2] <<= chroma_shift;
362 ✗ align = FFMAX3(align, linesize_align[1], linesize_align[2]);
363 ✗ *width = FFALIGN(*width, align);
364 ✗ }
365
366 ✗ int avcodec_fill_audio_frame(AVFrame *frame, int nb_channels,
367 enum AVSampleFormat sample_fmt, const uint8_t *buf,
368 int buf_size, int align)
369 {
370 ✗ int ch, planar, needed_size, ret = 0;
371
372 ✗ needed_size = av_samples_get_buffer_size(NULL, nb_channels,
373 frame->nb_samples, sample_fmt,
374 align);
375 ✗ if (buf_size < needed_size)
376 ✗ return AVERROR(EINVAL);
377
378 ✗ planar = av_sample_fmt_is_planar(sample_fmt);
379 ✗ if (planar && nb_channels > AV_NUM_DATA_POINTERS) {
380 ✗ if (!FF_ALLOCZ_TYPED_ARRAY(frame->extended_data, nb_channels))
381 ✗ return AVERROR(ENOMEM);
382 } else {
383 ✗ frame->extended_data = frame->data;
384 }
385
386 ✗ if ((ret = av_samples_fill_arrays(frame->extended_data, &frame->linesize[0],
387 (uint8_t *)(intptr_t)buf, nb_channels, frame->nb_samples,
388 sample_fmt, align)) < 0) {
389 ✗ if (frame->extended_data != frame->data)
390 ✗ av_freep(&frame->extended_data);
391 ✗ return ret;
392 }
393 ✗ if (frame->extended_data != frame->data) {
394 ✗ for (ch = 0; ch < AV_NUM_DATA_POINTERS; ch++)
395 ✗ frame->data[ch] = frame->extended_data[ch];
396 }
397
398 ✗ return ret;
399 }
400
401
402 199462 int avpriv_codec_get_cap_skip_frame_fill_param(const AVCodec *codec){
403 199462 return !!(ffcodec(codec)->caps_internal & FF_CODEC_CAP_SKIP_FRAME_FILL_PARAM);
404 }
405
406 29393 const char *avcodec_get_name(enum AVCodecID id)
407 {
408 const AVCodecDescriptor *cd;
409 const AVCodec *codec;
410
411
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 29393 if (id == AV_CODEC_ID_NONE)
412 243 return "none";
413 29150 cd = avcodec_descriptor_get(id);
414
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 29150 if (cd)
415 29146 return cd->name;
416 4 av_log(NULL, AV_LOG_WARNING, "Codec 0x%x is not in the full list.\n", id);
417 4 codec = avcodec_find_decoder(id);
418
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 4 if (codec)
419 ✗ return codec->name;
420 4 codec = avcodec_find_encoder(id);
421
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 4 if (codec)
422 ✗ return codec->name;
423 4 return "unknown_codec";
424 }
425
426 ✗ const char *av_get_profile_name(const AVCodec *codec, int profile)
427 {
428 const AVProfile *p;
429 ✗ if (profile == AV_PROFILE_UNKNOWN || !codec->profiles)
430 ✗ return NULL;
431
432 ✗ for (p = codec->profiles; p->profile != AV_PROFILE_UNKNOWN; p++)
433 ✗ if (p->profile == profile)
434 ✗ return p->name;
435
436 ✗ return NULL;
437 }
438
439 17275 const char *avcodec_profile_name(enum AVCodecID codec_id, int profile)
440 {
441 17275 const AVCodecDescriptor *desc = avcodec_descriptor_get(codec_id);
442 const AVProfile *p;
443
444
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 17275 if (profile == AV_PROFILE_UNKNOWN || !desc || !desc->profiles)
445 15226 return NULL;
446
447
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 5211 for (p = desc->profiles; p->profile != AV_PROFILE_UNKNOWN; p++)
448
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 5177 if (p->profile == profile)
449 2015 return p->name;
450
451 34 return NULL;
452 }
453
454 769660 int av_get_exact_bits_per_sample(enum AVCodecID codec_id)
455 {
456
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 769660 switch (codec_id) {
457 24 case AV_CODEC_ID_DFPWM:
458 24 return 1;
459 11414 case AV_CODEC_ID_8SVX_EXP:
460 case AV_CODEC_ID_8SVX_FIB:
461 case AV_CODEC_ID_ADPCM_ARGO:
462 case AV_CODEC_ID_ADPCM_CT:
463 case AV_CODEC_ID_ADPCM_IMA_ALP:
464 case AV_CODEC_ID_ADPCM_IMA_AMV:
465 case AV_CODEC_ID_ADPCM_IMA_APC:
466 case AV_CODEC_ID_ADPCM_IMA_APM:
467 case AV_CODEC_ID_ADPCM_IMA_EA_SEAD:
468 case AV_CODEC_ID_ADPCM_IMA_OKI:
469 case AV_CODEC_ID_ADPCM_IMA_WS:
470 case AV_CODEC_ID_ADPCM_IMA_SSI:
471 case AV_CODEC_ID_ADPCM_G722:
472 case AV_CODEC_ID_ADPCM_YAMAHA:
473 case AV_CODEC_ID_ADPCM_AICA:
474 11414 return 4;
475 5199 case AV_CODEC_ID_DSD_LSBF:
476 case AV_CODEC_ID_DSD_MSBF:
477 case AV_CODEC_ID_DSD_LSBF_PLANAR:
478 case AV_CODEC_ID_DSD_MSBF_PLANAR:
479 case AV_CODEC_ID_PCM_ALAW:
480 case AV_CODEC_ID_PCM_MULAW:
481 case AV_CODEC_ID_PCM_VIDC:
482 case AV_CODEC_ID_PCM_S8:
483 case AV_CODEC_ID_PCM_S8_PLANAR:
484 case AV_CODEC_ID_PCM_SGA:
485 case AV_CODEC_ID_PCM_U8:
486 case AV_CODEC_ID_SDX2_DPCM:
487 case AV_CODEC_ID_CBD2_DPCM:
488 case AV_CODEC_ID_DERF_DPCM:
489 case AV_CODEC_ID_WADY_DPCM:
490 5199 return 8;
491 479248 case AV_CODEC_ID_PCM_S16BE:
492 case AV_CODEC_ID_PCM_S16BE_PLANAR:
493 case AV_CODEC_ID_PCM_S16LE:
494 case AV_CODEC_ID_PCM_S16LE_PLANAR:
495 case AV_CODEC_ID_PCM_U16BE:
496 case AV_CODEC_ID_PCM_U16LE:
497 479248 return 16;
498 15515 case AV_CODEC_ID_PCM_S24DAUD:
499 case AV_CODEC_ID_PCM_S24BE:
500 case AV_CODEC_ID_PCM_S24LE:
501 case AV_CODEC_ID_PCM_S24LE_PLANAR:
502 case AV_CODEC_ID_PCM_U24BE:
503 case AV_CODEC_ID_PCM_U24LE:
504 15515 return 24;
505 23077 case AV_CODEC_ID_PCM_S32BE:
506 case AV_CODEC_ID_PCM_S32LE:
507 case AV_CODEC_ID_PCM_S32LE_PLANAR:
508 case AV_CODEC_ID_PCM_U32BE:
509 case AV_CODEC_ID_PCM_U32LE:
510 case AV_CODEC_ID_PCM_F32BE:
511 case AV_CODEC_ID_PCM_F32LE:
512 case AV_CODEC_ID_PCM_F24LE:
513 case AV_CODEC_ID_PCM_F16LE:
514 23077 return 32;
515 9512 case AV_CODEC_ID_PCM_F64BE:
516 case AV_CODEC_ID_PCM_F64LE:
517 case AV_CODEC_ID_PCM_S64BE:
518 case AV_CODEC_ID_PCM_S64LE:
519 9512 return 64;
520 225671 default:
521 225671 return 0;
522 }
523 }
524
525 26 enum AVCodecID av_get_pcm_codec(enum AVSampleFormat fmt, int be)
526 {
527 static const enum AVCodecID map[][2] = {
528 [AV_SAMPLE_FMT_U8 ] = { AV_CODEC_ID_PCM_U8, AV_CODEC_ID_PCM_U8 },
529 [AV_SAMPLE_FMT_S16 ] = { AV_CODEC_ID_PCM_S16LE, AV_CODEC_ID_PCM_S16BE },
530 [AV_SAMPLE_FMT_S32 ] = { AV_CODEC_ID_PCM_S32LE, AV_CODEC_ID_PCM_S32BE },
531 [AV_SAMPLE_FMT_FLT ] = { AV_CODEC_ID_PCM_F32LE, AV_CODEC_ID_PCM_F32BE },
532 [AV_SAMPLE_FMT_DBL ] = { AV_CODEC_ID_PCM_F64LE, AV_CODEC_ID_PCM_F64BE },
533 [AV_SAMPLE_FMT_U8P ] = { AV_CODEC_ID_PCM_U8, AV_CODEC_ID_PCM_U8 },
534 [AV_SAMPLE_FMT_S16P] = { AV_CODEC_ID_PCM_S16LE, AV_CODEC_ID_PCM_S16BE },
535 [AV_SAMPLE_FMT_S32P] = { AV_CODEC_ID_PCM_S32LE, AV_CODEC_ID_PCM_S32BE },
536 [AV_SAMPLE_FMT_S64P] = { AV_CODEC_ID_PCM_S64LE, AV_CODEC_ID_PCM_S64BE },
537 [AV_SAMPLE_FMT_FLTP] = { AV_CODEC_ID_PCM_F32LE, AV_CODEC_ID_PCM_F32BE },
538 [AV_SAMPLE_FMT_DBLP] = { AV_CODEC_ID_PCM_F64LE, AV_CODEC_ID_PCM_F64BE },
539 };
540
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 26 if (fmt < 0 || fmt >= FF_ARRAY_ELEMS(map))
541 ✗ return AV_CODEC_ID_NONE;
542
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 26 if (be < 0 || be > 1)
543 26 be = AV_NE(1, 0);
544 26 return map[fmt][be];
545 }
546
547 247400 int av_get_bits_per_sample(enum AVCodecID codec_id)
548 {
549
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 247400 switch (codec_id) {
550 17 case AV_CODEC_ID_DFPWM:
551 17 return 1;
552 3 case AV_CODEC_ID_ADPCM_SBPRO_2:
553 case AV_CODEC_ID_G728:
554 3 return 2;
555 3 case AV_CODEC_ID_ADPCM_SBPRO_3:
556 3 return 3;
557 74 case AV_CODEC_ID_ADPCM_SBPRO_4:
558 case AV_CODEC_ID_ADPCM_IMA_WAV:
559 case AV_CODEC_ID_ADPCM_IMA_XBOX:
560 case AV_CODEC_ID_ADPCM_IMA_QT:
561 case AV_CODEC_ID_ADPCM_SWF:
562 case AV_CODEC_ID_ADPCM_MS:
563 74 return 4;
564 247303 default:
565 247303 return av_get_exact_bits_per_sample(codec_id);
566 }
567 }
568
569 512911 static int get_audio_frame_duration(enum AVCodecID id, int sr, int ch, int ba,
570 uint32_t tag, int bits_per_coded_sample, int64_t bitrate,
571 uint8_t * extradata, int frame_size, int frame_bytes)
572 {
573 512911 int bps = av_get_exact_bits_per_sample(id);
574
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 512911 int framecount = (ba > 0 && frame_bytes / ba > 0) ? frame_bytes / ba : 1;
575
576 /* codecs with an exact constant bits per sample */
577
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 512911 if (bps > 0 && ch > 0 && frame_bytes > 0 && ch < 32768 && bps < 32768)
578 298263 return (frame_bytes * 8LL) / (bps * ch);
579 214648 bps = bits_per_coded_sample;
580
581 /* codecs with a fixed packet duration */
582
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 214648 switch (id) {
583 12407 case AV_CODEC_ID_ADPCM_ADX: return 32;
584 8274 case AV_CODEC_ID_ADPCM_IMA_QT: return 64;
585 600 case AV_CODEC_ID_ADPCM_EA_XAS: return 128;
586 5701 case AV_CODEC_ID_AMR_NB:
587 case AV_CODEC_ID_EVRC:
588 case AV_CODEC_ID_GSM:
589 case AV_CODEC_ID_QCELP:
590 5701 case AV_CODEC_ID_RA_288: return 160;
591 1124 case AV_CODEC_ID_AMR_WB:
592 1124 case AV_CODEC_ID_GSM_MS: return 320;
593 ✗ case AV_CODEC_ID_MP1: return 384;
594 8588 case AV_CODEC_ID_ATRAC1: return 512;
595 4335 case AV_CODEC_ID_ATRAC9:
596 case AV_CODEC_ID_ATRAC3:
597
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 4335 if (framecount > INT_MAX/1024)
598 ✗ return 0;
599 4335 return 1024 * framecount;
600 2186 case AV_CODEC_ID_ATRAC3P: return 2048;
601 18574 case AV_CODEC_ID_MP2:
602 18574 case AV_CODEC_ID_MUSEPACK7: return 1152;
603 2523 case AV_CODEC_ID_AC3: return 1536;
604 ✗ case AV_CODEC_ID_FTR: return 1024;
605 }
606
607
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 150336 if (sr > 0) {
608 /* calc from sample rate */
609
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 146824 if (id == AV_CODEC_ID_TTA)
610 17 return 256ll * sr / 245;
611
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 146807 else if (id == AV_CODEC_ID_DST)
612 ✗ return 588ll * sr / 44100;
613
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 146807 else if (id == AV_CODEC_ID_BINKAUDIO_DCT) {
614
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 66 if (sr / 22050 > 22)
615 ✗ return 0;
616 66 return (480 << (sr / 22050));
617 }
618
619
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 146741 if (id == AV_CODEC_ID_MP3)
620
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 6703 return sr <= 24000 ? 576 : 1152;
621 }
622
623
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 143550 if (ba > 0) {
624 /* calc from block_align */
625
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 41700 if (id == AV_CODEC_ID_SIPR) {
626
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 7266 switch (ba) {
627 3267 case 20: return 160;
628 1983 case 19: return 144;
629 1680 case 29: return 288;
630 336 case 37: return 480;
631 }
632
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 34434 } else if (id == AV_CODEC_ID_ILBC) {
633 ✗ switch (ba) {
634 ✗ case 38: return 160;
635 ✗ case 50: return 240;
636 }
637 }
638 }
639
640
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 136284 if (frame_bytes > 0) {
641 /* calc from frame_bytes only */
642
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 132700 if (id == AV_CODEC_ID_TRUESPEECH)
643 721 return 240 * (frame_bytes / 32);
644
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 131979 if (id == AV_CODEC_ID_NELLYMOSER)
645 2074 return 256 * (frame_bytes / 64);
646
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 129905 if (id == AV_CODEC_ID_RA_144)
647 1057 return 160 * (frame_bytes / 20);
648
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 128848 if (id == AV_CODEC_ID_APTX)
649 460 return 4 * (frame_bytes / 4);
650
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 128388 if (id == AV_CODEC_ID_APTX_HD)
651 460 return 4 * (frame_bytes / 6);
652
653
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 127928 if (bps > 0) {
654 /* calc from frame_bytes and bits_per_coded_sample */
655
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 45997 if (id == AV_CODEC_ID_ADPCM_G726 || id == AV_CODEC_ID_ADPCM_G726LE)
656 460 return frame_bytes * 8 / bps;
657 }
658
659
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 127468 if (ch > 0 && ch < INT_MAX/16) {
660 /* calc from frame_bytes and channels */
661
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 127342 switch (id) {
662 ✗ case AV_CODEC_ID_FASTAUDIO:
663 ✗ return frame_bytes / (40 * ch) * 256;
664 ✗ case AV_CODEC_ID_ADPCM_IMA_MOFLEX:
665 ✗ return (frame_bytes - 4 * ch) / (128 * ch) * 256;
666 48 case AV_CODEC_ID_ADPCM_AFC:
667 48 return frame_bytes / (9 * ch) * 16;
668 33 case AV_CODEC_ID_ADPCM_PSX:
669 case AV_CODEC_ID_ADPCM_DTK:
670 33 frame_bytes /= 16 * ch;
671
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 33 if (frame_bytes > INT_MAX / 28)
672 ✗ return 0;
673 33 return frame_bytes * 28;
674 452 case AV_CODEC_ID_ADPCM_4XM:
675 case AV_CODEC_ID_ADPCM_IMA_ACORN:
676 case AV_CODEC_ID_ADPCM_IMA_DAT4:
677 case AV_CODEC_ID_ADPCM_IMA_ISS:
678 452 return (frame_bytes - 4 * ch) * 2 / ch;
679 1951 case AV_CODEC_ID_ADPCM_IMA_SMJPEG:
680 1951 return (frame_bytes - 4) * 2 / ch;
681 ✗ case AV_CODEC_ID_ADPCM_IMA_AMV:
682 ✗ return (frame_bytes - 8) * 2;
683 3580 case AV_CODEC_ID_ADPCM_THP:
684 case AV_CODEC_ID_ADPCM_THP_LE:
685
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 3580 if (extradata)
686 3530 return frame_bytes * 14LL / (8 * ch);
687 50 break;
688 222 case AV_CODEC_ID_ADPCM_XA:
689 222 return (frame_bytes / 128) * 224 / ch;
690 327 case AV_CODEC_ID_INTERPLAY_DPCM:
691 327 return (frame_bytes - 6 - ch) / ch;
692 680 case AV_CODEC_ID_ROQ_DPCM:
693 680 return (frame_bytes - 8) / ch;
694 112 case AV_CODEC_ID_XAN_DPCM:
695 112 return (frame_bytes - 2 * ch) / ch;
696 ✗ case AV_CODEC_ID_MACE3:
697 ✗ return 3 * frame_bytes / ch;
698 317 case AV_CODEC_ID_MACE6:
699 317 return 6 * frame_bytes / ch;
700 ✗ case AV_CODEC_ID_PCM_LXF:
701 ✗ return 2 * (frame_bytes / (5 * ch));
702 1311 case AV_CODEC_ID_IAC:
703 case AV_CODEC_ID_IMC:
704 1311 return 4 * frame_bytes / ch;
705 }
706
707
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 118359 if (tag) {
708 /* calc from frame_bytes, channels, and codec_tag */
709
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 28781 if (id == AV_CODEC_ID_SOL_DPCM) {
710
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 74 if (tag == 3)
711 74 return frame_bytes / ch;
712 else
713 ✗ return frame_bytes * 2 / ch;
714 }
715 }
716
717
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 118285 if (ba > 0) {
718 /* calc from frame_bytes, channels, and block_align */
719 29953 int blocks = frame_bytes / ba;
720 29953 int64_t tmp = 0;
721
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 29953 switch (id) {
722 182 case AV_CODEC_ID_ADPCM_IMA_XBOX:
723
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 182 if (bps != 4)
724 ✗ return 0;
725 182 tmp = blocks * ((ba - 4 * ch) / (bps * ch) * 8);
726 182 break;
727 873 case AV_CODEC_ID_ADPCM_IMA_WAV:
728
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 873 if (bps < 2 || bps > 5)
729 ✗ return 0;
730 873 tmp = blocks * (1LL + (ba - 4 * ch) / (bps * ch) * 8LL);
731 873 break;
732 669 case AV_CODEC_ID_ADPCM_IMA_DK3:
733 669 tmp = blocks * (((ba - 16LL) * 2 / 3 * 4) / ch);
734 669 break;
735 649 case AV_CODEC_ID_ADPCM_IMA_DK4:
736 649 tmp = blocks * (1 + (ba - 4LL * ch) * 2 / ch);
737 649 break;
738 1001 case AV_CODEC_ID_ADPCM_IMA_RAD:
739 1001 tmp = blocks * ((ba - 4LL * ch) * 2 / ch);
740 1001 break;
741 890 case AV_CODEC_ID_ADPCM_MS:
742 890 tmp = blocks * (2 + (ba - 7LL * ch) * 2LL / ch);
743 890 break;
744 ✗ case AV_CODEC_ID_ADPCM_MTAF:
745 ✗ tmp = blocks * (ba - 16LL) * 2 / ch;
746 ✗ break;
747 ✗ case AV_CODEC_ID_ADPCM_XMD:
748 ✗ tmp = blocks * 32;
749 ✗ break;
750 }
751
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 29953 if (tmp) {
752
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 4264 if (tmp != (int)tmp)
753 ✗ return 0;
754 4264 return tmp;
755 }
756 }
757
758
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 114021 if (bps > 0) {
759 /* calc from frame_bytes, channels, and bits_per_coded_sample */
760
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 37338 switch (id) {
761 20832 case AV_CODEC_ID_PCM_DVD:
762
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 20832 if(bps<4 || frame_bytes<3)
763 ✗ return 0;
764 20832 return 2 * ((frame_bytes - 3) / ((bps * 2 / 8) * ch));
765 ✗ case AV_CODEC_ID_PCM_BLURAY:
766 ✗ if(bps<4 || frame_bytes<4)
767 ✗ return 0;
768 ✗ return (frame_bytes - 4) / ((FFALIGN(ch, 2) * bps) / 8);
769 ✗ case AV_CODEC_ID_S302M:
770 ✗ return 2 * (frame_bytes / ((bps + 4) / 4)) / ch;
771 }
772 }
773 }
774 }
775
776 /* Fall back on using frame_size */
777
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 96899 if (frame_size > 1 && frame_bytes)
778 52742 return frame_size;
779
780 //For WMA we currently have no other means to calculate duration thus we
781 //do it here by assuming CBR, which is true for all known cases.
782
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 44157 if (bitrate > 0 && frame_bytes > 0 && sr > 0 && ba > 1) {
783
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 9701 if (id == AV_CODEC_ID_WMAV1 || id == AV_CODEC_ID_WMAV2)
784 1000 return (frame_bytes * 8LL * sr) / bitrate;
785 }
786
787 43157 return 0;
788 }
789
790 45156 int av_get_audio_frame_duration(AVCodecContext *avctx, int frame_bytes)
791 {
792 45156 int channels = avctx->ch_layout.nb_channels;
793 int duration;
794
795 45156 duration = get_audio_frame_duration(avctx->codec_id, avctx->sample_rate,
796 channels, avctx->block_align,
797 avctx->codec_tag, avctx->bits_per_coded_sample,
798 avctx->bit_rate, avctx->extradata, avctx->frame_size,
799 frame_bytes);
800 45156 return FFMAX(0, duration);
801 }
802
803 467755 int av_get_audio_frame_duration2(AVCodecParameters *par, int frame_bytes)
804 {
805 467755 int channels = par->ch_layout.nb_channels;
806 int duration;
807
808 467755 duration = get_audio_frame_duration(par->codec_id, par->sample_rate,
809 channels, par->block_align,
810 par->codec_tag, par->bits_per_coded_sample,
811 par->bit_rate, par->extradata, par->frame_size,
812 frame_bytes);
813 467755 return FFMAX(0, duration);
814 }
815
816 58 unsigned int av_xiphlacing(unsigned char *s, unsigned int v)
817 {
818 58 unsigned int n = 0;
819
820
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 58 while (v >= 0xff) {
821 ✗ *s++ = 0xff;
822 ✗ v -= 0xff;
823 ✗ n++;
824 }
825 58 *s = v;
826 58 n++;
827 58 return n;
828 }
829
830 476 int ff_match_2uint16(const uint16_t(*tab)[2], int size, int a, int b)
831 {
832 int i;
833
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 1924 for (i = 0; i < size && !(tab[i][0] == a && tab[i][1] == b); i++) ;
834 476 return i;
835 }
836
837 16757 const AVCodecHWConfig *avcodec_get_hw_config(const AVCodec *avcodec, int index)
838 {
839 16757 const FFCodec *const codec = ffcodec(avcodec);
840 int i;
841
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 16757 if (!codec->hw_configs || index < 0)
842 14092 return NULL;
843
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 6890 for (i = 0; i <= index; i++)
844
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 5178 if (!codec->hw_configs[i])
845 953 return NULL;
846 1712 return &codec->hw_configs[index]->public;
847 }
848
849 27468 int ff_thread_ref_frame(ThreadFrame *dst, const ThreadFrame *src)
850 {
851 int ret;
852
853 27468 dst->owner[0] = src->owner[0];
854 27468 dst->owner[1] = src->owner[1];
855
856 27468 ret = av_frame_ref(dst->f, src->f);
857
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 27468 if (ret < 0)
858 ✗ return ret;
859
860
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 27468 av_assert0(!dst->progress);
861
862
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 27468 if (src->progress)
863 60 dst->progress = av_refstruct_ref(src->progress);
864
865 27468 return 0;
866 }
867
868 298 int ff_thread_replace_frame(ThreadFrame *dst, const ThreadFrame *src)
869 {
870 int ret;
871
872 298 dst->owner[0] = src->owner[0];
873 298 dst->owner[1] = src->owner[1];
874
875 298 ret = av_frame_replace(dst->f, src->f);
876
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 298 if (ret < 0)
877 ✗ return ret;
878
879 298 av_refstruct_replace(&dst->progress, src->progress);
880
881 298 return 0;
882 }
883
884 #if !HAVE_THREADS
885
886 int ff_thread_get_buffer(AVCodecContext *avctx, AVFrame *f, int flags)
887 {
888 return ff_get_buffer(avctx, f, flags);
889 }
890
891 int ff_thread_get_ext_buffer(AVCodecContext *avctx, ThreadFrame *f, int flags)
892 {
893 f->owner[0] = f->owner[1] = avctx;
894 return ff_get_buffer(avctx, f->f, flags);
895 }
896
897 void ff_thread_release_ext_buffer(ThreadFrame *f)
898 {
899 f->owner[0] = f->owner[1] = NULL;
900 if (f->f)
901 av_frame_unref(f->f);
902 }
903
904 void ff_thread_finish_setup(AVCodecContext *avctx)
905 {
906 }
907
908 void ff_thread_report_progress(ThreadFrame *f, int progress, int field)
909 {
910 }
911
912 void ff_thread_await_progress(const ThreadFrame *f, int progress, int field)
913 {
914 }
915
916 int ff_thread_can_start_frame(AVCodecContext *avctx)
917 {
918 return 1;
919 }
920 #endif
921
922 665325 const uint8_t *avpriv_find_start_code(const uint8_t *restrict p,
923 const uint8_t *end,
924 uint32_t *restrict state)
925 {
926 int i;
927
928
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 665325 av_assert0(p <= end);
929
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 665325 if (p >= end)
930 922 return end;
931
932
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 2648088 for (i = 0; i < 3; i++) {
933 1987592 uint32_t tmp = *state << 8;
934 1987592 *state = tmp + *(p++);
935
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 1987592 if (tmp == 0x100 || p == end)
936 3907 return p;
937 }
938
939
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 397884960 while (p < end) {
940
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 397817819 if (p[-1] > 1 ) p += 3;
941
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 37423784 else if (p[-2] ) p += 2;
942
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 21347007 else if (p[-3]|(p[-1]-1)) p++;
943 else {
944 593355 p++;
945 593355 break;
946 }
947 }
948
949
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 660496 p = FFMIN(p, end) - 4;
950 660496 *state = AV_RB32(p);
951
952 660496 return p + 4;
953 }
954
955 413 AVCPBProperties *av_cpb_properties_alloc(size_t *size)
956 {
957 413 AVCPBProperties *props = av_mallocz(sizeof(AVCPBProperties));
958
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 413 if (!props)
959 ✗ return NULL;
960
961
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 413 if (size)
962 413 *size = sizeof(*props);
963
964 413 props->vbv_delay = UINT64_MAX;
965
966 413 return props;
967 }
968
969 ✗ int ff_alloc_timecode_sei(const AVFrame *frame, AVRational rate, size_t prefix_len,
970 void **data, size_t *sei_size)
971 {
972 ✗ AVFrameSideData *sd = NULL;
973 uint8_t *sei_data;
974 PutBitContext pb;
975 uint32_t *tc;
976 int m;
977
978 ✗ if (frame)
979 ✗ sd = av_frame_get_side_data(frame, AV_FRAME_DATA_S12M_TIMECODE);
980
981 ✗ if (!sd) {
982 ✗ *data = NULL;
983 ✗ return 0;
984 }
985 ✗ tc = (uint32_t*)sd->data;
986 ✗ m = tc[0] & 3;
987
988 ✗ *sei_size = sizeof(uint32_t) * 4;
989 ✗ *data = av_mallocz(*sei_size + prefix_len);
990 ✗ if (!*data)
991 ✗ return AVERROR(ENOMEM);
992 ✗ sei_data = (uint8_t*)*data + prefix_len;
993
994 ✗ init_put_bits(&pb, sei_data, *sei_size);
995 ✗ put_bits(&pb, 2, m); // num_clock_ts
996
997 ✗ for (int j = 1; j <= m; j++) {
998 unsigned hh, mm, ss, ff, drop;
999 ✗ ff_timecode_set_smpte(&drop, &hh, &mm, &ss, &ff, rate, tc[j], 0, 0);
1000
1001 ✗ put_bits(&pb, 1, 1); // clock_timestamp_flag
1002 ✗ put_bits(&pb, 1, 1); // units_field_based_flag
1003 ✗ put_bits(&pb, 5, 0); // counting_type
1004 ✗ put_bits(&pb, 1, 1); // full_timestamp_flag
1005 ✗ put_bits(&pb, 1, 0); // discontinuity_flag
1006 ✗ put_bits(&pb, 1, drop);
1007 ✗ put_bits(&pb, 9, ff);
1008 ✗ put_bits(&pb, 6, ss);
1009 ✗ put_bits(&pb, 6, mm);
1010 ✗ put_bits(&pb, 5, hh);
1011 ✗ put_bits(&pb, 5, 0);
1012 }
1013 ✗ flush_put_bits(&pb);
1014
1015 ✗ return 0;
1016 }
1017
1018 19138 int64_t ff_guess_coded_bitrate(AVCodecContext *avctx)
1019 {
1020 19138 AVRational framerate = avctx->framerate;
1021 19138 int bits_per_coded_sample = avctx->bits_per_coded_sample;
1022 int64_t bitrate;
1023
1024
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 19138 if (!(framerate.num && framerate.den))
1025 119 framerate = av_inv_q(avctx->time_base);
1026
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 19138 if (!(framerate.num && framerate.den))
1027 ✗ return 0;
1028
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 19138 if (!bits_per_coded_sample) {
1030 ✗ const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(avctx->pix_fmt);
1031 ✗ bits_per_coded_sample = av_get_bits_per_pixel(desc);
1032 }
1033 19138 bitrate = (int64_t)bits_per_coded_sample * avctx->width * avctx->height *
1034 19138 framerate.num / framerate.den;
1035
1036 19138 return bitrate;
1037 }
1038