repositories / deb_ffmpeg.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
Imported Debian version 2.5.2~trusty
[deb_ffmpeg.git] / ffmpeg / libavcodec / utils.c
CommitLineData
2ba45a60
DM		 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/atomic.h"
30#include "libavutil/attributes.h"
31#include "libavutil/avassert.h"
32#include "libavutil/avstring.h"
33#include "libavutil/bprint.h"
34#include "libavutil/channel_layout.h"
35#include "libavutil/crc.h"
36#include "libavutil/frame.h"
37#include "libavutil/internal.h"
38#include "libavutil/mathematics.h"
39#include "libavutil/pixdesc.h"
40#include "libavutil/imgutils.h"
41#include "libavutil/samplefmt.h"
42#include "libavutil/dict.h"
43#include "avcodec.h"
44#include "libavutil/opt.h"
45#include "me_cmp.h"
46#include "mpegvideo.h"
47#include "thread.h"
48#include "frame_thread_encoder.h"
49#include "internal.h"
50#include "raw.h"
51#include "bytestream.h"
52#include "version.h"
53#include <stdlib.h>
54#include <stdarg.h>
55#include <limits.h>
56#include <float.h>
57#if CONFIG_ICONV
58# include <iconv.h>
59#endif
60
61#if HAVE_PTHREADS
62#include <pthread.h>
63#elif HAVE_W32THREADS
64#include "compat/w32pthreads.h"
65#elif HAVE_OS2THREADS
66#include "compat/os2threads.h"
67#endif
68
092a9121
DM		 69#include "libavutil/ffversion.h"
70const char av_codec_ffversion[] = "FFmpeg version " FFMPEG_VERSION;
71
2ba45a60
DM		 72#if HAVE_PTHREADS || HAVE_W32THREADS || HAVE_OS2THREADS
73static int default_lockmgr_cb(void **arg, enum AVLockOp op)
74{
75 void * volatile * mutex = arg;
76 int err;
77
78 switch (op) {
79 case AV_LOCK_CREATE:
80 return 0;
81 case AV_LOCK_OBTAIN:
82 if (!*mutex) {
83 pthread_mutex_t *tmp = av_malloc(sizeof(pthread_mutex_t));
84 if (!tmp)
85 return AVERROR(ENOMEM);
86 if ((err = pthread_mutex_init(tmp, NULL))) {
87 av_free(tmp);
88 return AVERROR(err);
89 }
90 if (avpriv_atomic_ptr_cas(mutex, NULL, tmp)) {
91 pthread_mutex_destroy(tmp);
92 av_free(tmp);
93 }
94 }
95
96 if ((err = pthread_mutex_lock(*mutex)))
97 return AVERROR(err);
98
99 return 0;
100 case AV_LOCK_RELEASE:
101 if ((err = pthread_mutex_unlock(*mutex)))
102 return AVERROR(err);
103
104 return 0;
105 case AV_LOCK_DESTROY:
106 if (*mutex)
107 pthread_mutex_destroy(*mutex);
108 av_free(*mutex);
109 avpriv_atomic_ptr_cas(mutex, *mutex, NULL);
110 return 0;
111 }
112 return 1;
113}
114static int (*lockmgr_cb)(void **mutex, enum AVLockOp op) = default_lockmgr_cb;
115#else
116static int (*lockmgr_cb)(void **mutex, enum AVLockOp op) = NULL;
117#endif
118
119
120volatile int ff_avcodec_locked;
121static int volatile entangled_thread_counter = 0;
122static void *codec_mutex;
123static void *avformat_mutex;
124
125static inline int ff_fast_malloc(void *ptr, unsigned int *size, size_t min_size, int zero_realloc)
126{
127 void **p = ptr;
f6fa7814 128 if (min_size <= *size && *p)
2ba45a60
DM		 129 return 0;
130 min_size = FFMAX(17 * min_size / 16 + 32, min_size);
131 av_free(*p);
132 *p = zero_realloc ? av_mallocz(min_size) : av_malloc(min_size);
133 if (!*p)
134 min_size = 0;
135 *size = min_size;
136 return 1;
137}
138
139void av_fast_padded_malloc(void *ptr, unsigned int *size, size_t min_size)
140{
141 uint8_t **p = ptr;
142 if (min_size > SIZE_MAX - FF_INPUT_BUFFER_PADDING_SIZE) {
143 av_freep(p);
144 *size = 0;
145 return;
146 }
147 if (!ff_fast_malloc(p, size, min_size + FF_INPUT_BUFFER_PADDING_SIZE, 1))
148 memset(*p + min_size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
149}
150
151void av_fast_padded_mallocz(void *ptr, unsigned int *size, size_t min_size)
152{
153 uint8_t **p = ptr;
154 if (min_size > SIZE_MAX - FF_INPUT_BUFFER_PADDING_SIZE) {
155 av_freep(p);
156 *size = 0;
157 return;
158 }
159 if (!ff_fast_malloc(p, size, min_size + FF_INPUT_BUFFER_PADDING_SIZE, 1))
160 memset(*p, 0, min_size + FF_INPUT_BUFFER_PADDING_SIZE);
161}
162
163/* encoder management */
164static AVCodec *first_avcodec = NULL;
165static AVCodec **last_avcodec = &first_avcodec;
166
167AVCodec *av_codec_next(const AVCodec *c)
168{
169 if (c)
170 return c->next;
171 else
172 return first_avcodec;
173}
174
175static av_cold void avcodec_init(void)
176{
177 static int initialized = 0;
178
179 if (initialized != 0)
180 return;
181 initialized = 1;
182
183 if (CONFIG_ME_CMP)
184 ff_me_cmp_init_static();
185}
186
187int av_codec_is_encoder(const AVCodec *codec)
188{
189 return codec && (codec->encode_sub || codec->encode2);
190}
191
192int av_codec_is_decoder(const AVCodec *codec)
193{
194 return codec && codec->decode;
195}
196
197av_cold void avcodec_register(AVCodec *codec)
198{
199 AVCodec **p;
200 avcodec_init();
201 p = last_avcodec;
202 codec->next = NULL;
203
204 while(*p || avpriv_atomic_ptr_cas((void * volatile *)p, NULL, codec))
205 p = &(*p)->next;
206 last_avcodec = &codec->next;
207
208 if (codec->init_static_data)
209 codec->init_static_data(codec);
210}
211
212#if FF_API_EMU_EDGE
213unsigned avcodec_get_edge_width(void)
214{
215 return EDGE_WIDTH;
216}
217#endif
218
219#if FF_API_SET_DIMENSIONS
220void avcodec_set_dimensions(AVCodecContext *s, int width, int height)
221{
222 int ret = ff_set_dimensions(s, width, height);
223 if (ret < 0) {
224 av_log(s, AV_LOG_WARNING, "Failed to set dimensions %d %d\n", width, height);
225 }
226}
227#endif
228
229int ff_set_dimensions(AVCodecContext *s, int width, int height)
230{
231 int ret = av_image_check_size(width, height, 0, s);
232
233 if (ret < 0)
234 width = height = 0;
235
236 s->coded_width = width;
237 s->coded_height = height;
238 s->width = FF_CEIL_RSHIFT(width, s->lowres);
239 s->height = FF_CEIL_RSHIFT(height, s->lowres);
240
241 return ret;
242}
243
244int ff_set_sar(AVCodecContext *avctx, AVRational sar)
245{
246 int ret = av_image_check_sar(avctx->width, avctx->height, sar);
247
248 if (ret < 0) {
249 av_log(avctx, AV_LOG_WARNING, "ignoring invalid SAR: %u/%u\n",
250 sar.num, sar.den);
251 avctx->sample_aspect_ratio = (AVRational){ 0, 1 };
252 return ret;
253 } else {
254 avctx->sample_aspect_ratio = sar;
255 }
256 return 0;
257}
258
259int ff_side_data_update_matrix_encoding(AVFrame *frame,
260 enum AVMatrixEncoding matrix_encoding)
261{
262 AVFrameSideData *side_data;
263 enum AVMatrixEncoding *data;
264
265 side_data = av_frame_get_side_data(frame, AV_FRAME_DATA_MATRIXENCODING);
266 if (!side_data)
267 side_data = av_frame_new_side_data(frame, AV_FRAME_DATA_MATRIXENCODING,
268 sizeof(enum AVMatrixEncoding));
269
270 if (!side_data)
271 return AVERROR(ENOMEM);
272
273 data = (enum AVMatrixEncoding*)side_data->data;
274 *data = matrix_encoding;
275
276 return 0;
277}
278
279void avcodec_align_dimensions2(AVCodecContext *s, int *width, int *height,
280 int linesize_align[AV_NUM_DATA_POINTERS])
281{
282 int i;
283 int w_align = 1;
284 int h_align = 1;
f6fa7814 285 AVPixFmtDescriptor const *desc = av_pix_fmt_desc_get(s->pix_fmt);
2ba45a60
DM		 286
287 if (desc) {
288 w_align = 1 << desc->log2_chroma_w;
289 h_align = 1 << desc->log2_chroma_h;
290 }
291
292 switch (s->pix_fmt) {
293 case AV_PIX_FMT_YUV420P:
294 case AV_PIX_FMT_YUYV422:
295 case AV_PIX_FMT_YVYU422:
296 case AV_PIX_FMT_UYVY422:
297 case AV_PIX_FMT_YUV422P:
298 case AV_PIX_FMT_YUV440P:
299 case AV_PIX_FMT_YUV444P:
300 case AV_PIX_FMT_GBRAP:
301 case AV_PIX_FMT_GBRP:
302 case AV_PIX_FMT_GRAY8:
303 case AV_PIX_FMT_GRAY16BE:
304 case AV_PIX_FMT_GRAY16LE:
305 case AV_PIX_FMT_YUVJ420P:
306 case AV_PIX_FMT_YUVJ422P:
307 case AV_PIX_FMT_YUVJ440P:
308 case AV_PIX_FMT_YUVJ444P:
309 case AV_PIX_FMT_YUVA420P:
310 case AV_PIX_FMT_YUVA422P:
311 case AV_PIX_FMT_YUVA444P:
312 case AV_PIX_FMT_YUV420P9LE:
313 case AV_PIX_FMT_YUV420P9BE:
314 case AV_PIX_FMT_YUV420P10LE:
315 case AV_PIX_FMT_YUV420P10BE:
316 case AV_PIX_FMT_YUV420P12LE:
317 case AV_PIX_FMT_YUV420P12BE:
318 case AV_PIX_FMT_YUV420P14LE:
319 case AV_PIX_FMT_YUV420P14BE:
320 case AV_PIX_FMT_YUV420P16LE:
321 case AV_PIX_FMT_YUV420P16BE:
322 case AV_PIX_FMT_YUVA420P9LE:
323 case AV_PIX_FMT_YUVA420P9BE:
324 case AV_PIX_FMT_YUVA420P10LE:
325 case AV_PIX_FMT_YUVA420P10BE:
326 case AV_PIX_FMT_YUVA420P16LE:
327 case AV_PIX_FMT_YUVA420P16BE:
328 case AV_PIX_FMT_YUV422P9LE:
329 case AV_PIX_FMT_YUV422P9BE:
330 case AV_PIX_FMT_YUV422P10LE:
331 case AV_PIX_FMT_YUV422P10BE:
332 case AV_PIX_FMT_YUV422P12LE:
333 case AV_PIX_FMT_YUV422P12BE:
334 case AV_PIX_FMT_YUV422P14LE:
335 case AV_PIX_FMT_YUV422P14BE:
336 case AV_PIX_FMT_YUV422P16LE:
337 case AV_PIX_FMT_YUV422P16BE:
338 case AV_PIX_FMT_YUVA422P9LE:
339 case AV_PIX_FMT_YUVA422P9BE:
340 case AV_PIX_FMT_YUVA422P10LE:
341 case AV_PIX_FMT_YUVA422P10BE:
342 case AV_PIX_FMT_YUVA422P16LE:
343 case AV_PIX_FMT_YUVA422P16BE:
344 case AV_PIX_FMT_YUV444P9LE:
345 case AV_PIX_FMT_YUV444P9BE:
346 case AV_PIX_FMT_YUV444P10LE:
347 case AV_PIX_FMT_YUV444P10BE:
348 case AV_PIX_FMT_YUV444P12LE:
349 case AV_PIX_FMT_YUV444P12BE:
350 case AV_PIX_FMT_YUV444P14LE:
351 case AV_PIX_FMT_YUV444P14BE:
352 case AV_PIX_FMT_YUV444P16LE:
353 case AV_PIX_FMT_YUV444P16BE:
354 case AV_PIX_FMT_YUVA444P9LE:
355 case AV_PIX_FMT_YUVA444P9BE:
356 case AV_PIX_FMT_YUVA444P10LE:
357 case AV_PIX_FMT_YUVA444P10BE:
358 case AV_PIX_FMT_YUVA444P16LE:
359 case AV_PIX_FMT_YUVA444P16BE:
360 case AV_PIX_FMT_GBRP9LE:
361 case AV_PIX_FMT_GBRP9BE:
362 case AV_PIX_FMT_GBRP10LE:
363 case AV_PIX_FMT_GBRP10BE:
364 case AV_PIX_FMT_GBRP12LE:
365 case AV_PIX_FMT_GBRP12BE:
366 case AV_PIX_FMT_GBRP14LE:
367 case AV_PIX_FMT_GBRP14BE:
368 case AV_PIX_FMT_GBRP16LE:
369 case AV_PIX_FMT_GBRP16BE:
370 w_align = 16; //FIXME assume 16 pixel per macroblock
371 h_align = 16 * 2; // interlaced needs 2 macroblocks height
372 break;
373 case AV_PIX_FMT_YUV411P:
374 case AV_PIX_FMT_YUVJ411P:
375 case AV_PIX_FMT_UYYVYY411:
376 w_align = 32;
377 h_align = 8;
378 break;
379 case AV_PIX_FMT_YUV410P:
380 if (s->codec_id == AV_CODEC_ID_SVQ1) {
381 w_align = 64;
382 h_align = 64;
383 }
384 break;
385 case AV_PIX_FMT_RGB555:
386 if (s->codec_id == AV_CODEC_ID_RPZA) {
387 w_align = 4;
388 h_align = 4;
389 }
390 break;
391 case AV_PIX_FMT_PAL8:
392 case AV_PIX_FMT_BGR8:
393 case AV_PIX_FMT_RGB8:
394 if (s->codec_id == AV_CODEC_ID_SMC ||
395 s->codec_id == AV_CODEC_ID_CINEPAK) {
396 w_align = 4;
397 h_align = 4;
398 }
399 if (s->codec_id == AV_CODEC_ID_JV) {
400 w_align = 8;
401 h_align = 8;
402 }
403 break;
404 case AV_PIX_FMT_BGR24:
405 if ((s->codec_id == AV_CODEC_ID_MSZH) ||
406 (s->codec_id == AV_CODEC_ID_ZLIB)) {
407 w_align = 4;
408 h_align = 4;
409 }
410 break;
411 case AV_PIX_FMT_RGB24:
412 if (s->codec_id == AV_CODEC_ID_CINEPAK) {
413 w_align = 4;
414 h_align = 4;
415 }
416 break;
417 default:
418 break;
419 }
420
421 if (s->codec_id == AV_CODEC_ID_IFF_ILBM || s->codec_id == AV_CODEC_ID_IFF_BYTERUN1) {
422 w_align = FFMAX(w_align, 8);
423 }
424
425 *width = FFALIGN(*width, w_align);
426 *height = FFALIGN(*height, h_align);
427 if (s->codec_id == AV_CODEC_ID_H264 || s->lowres)
428 // some of the optimized chroma MC reads one line too much
429 // which is also done in mpeg decoders with lowres > 0
430 *height += 2;
431
432 for (i = 0; i < 4; i++)
433 linesize_align[i] = STRIDE_ALIGN;
434}
435
436void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height)
437{
438 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(s->pix_fmt);
439 int chroma_shift = desc->log2_chroma_w;
440 int linesize_align[AV_NUM_DATA_POINTERS];
441 int align;
442
443 avcodec_align_dimensions2(s, width, height, linesize_align);
444 align = FFMAX(linesize_align[0], linesize_align[3]);
445 linesize_align[1] <<= chroma_shift;
446 linesize_align[2] <<= chroma_shift;
447 align = FFMAX3(align, linesize_align[1], linesize_align[2]);
448 *width = FFALIGN(*width, align);
449}
450
451int avcodec_enum_to_chroma_pos(int *xpos, int *ypos, enum AVChromaLocation pos)
452{
453 if (pos <= AVCHROMA_LOC_UNSPECIFIED || pos >= AVCHROMA_LOC_NB)
454 return AVERROR(EINVAL);
455 pos--;
456
457 *xpos = (pos&1) * 128;
458 *ypos = ((pos>>1)^(pos<4)) * 128;
459
460 return 0;
461}
462
463enum AVChromaLocation avcodec_chroma_pos_to_enum(int xpos, int ypos)
464{
465 int pos, xout, yout;
466
467 for (pos = AVCHROMA_LOC_UNSPECIFIED + 1; pos < AVCHROMA_LOC_NB; pos++) {
468 if (avcodec_enum_to_chroma_pos(&xout, &yout, pos) == 0 && xout == xpos && yout == ypos)
469 return pos;
470 }
471 return AVCHROMA_LOC_UNSPECIFIED;
472}
473
474int avcodec_fill_audio_frame(AVFrame *frame, int nb_channels,
475 enum AVSampleFormat sample_fmt, const uint8_t *buf,
476 int buf_size, int align)
477{
478 int ch, planar, needed_size, ret = 0;
479
480 needed_size = av_samples_get_buffer_size(NULL, nb_channels,
481 frame->nb_samples, sample_fmt,
482 align);
483 if (buf_size < needed_size)
484 return AVERROR(EINVAL);
485
486 planar = av_sample_fmt_is_planar(sample_fmt);
487 if (planar && nb_channels > AV_NUM_DATA_POINTERS) {
488 if (!(frame->extended_data = av_mallocz_array(nb_channels,
489 sizeof(*frame->extended_data))))
490 return AVERROR(ENOMEM);
491 } else {
492 frame->extended_data = frame->data;
493 }
494
495 if ((ret = av_samples_fill_arrays(frame->extended_data, &frame->linesize[0],
496 (uint8_t *)(intptr_t)buf, nb_channels, frame->nb_samples,
497 sample_fmt, align)) < 0) {
498 if (frame->extended_data != frame->data)
499 av_freep(&frame->extended_data);
500 return ret;
501 }
502 if (frame->extended_data != frame->data) {
503 for (ch = 0; ch < AV_NUM_DATA_POINTERS; ch++)
504 frame->data[ch] = frame->extended_data[ch];
505 }
506
507 return ret;
508}
509
510static int update_frame_pool(AVCodecContext *avctx, AVFrame *frame)
511{
512 FramePool *pool = avctx->internal->pool;
513 int i, ret;
514
515 switch (avctx->codec_type) {
516 case AVMEDIA_TYPE_VIDEO: {
517 AVPicture picture;
518 int size[4] = { 0 };
519 int w = frame->width;
520 int h = frame->height;
521 int tmpsize, unaligned;
522
523 if (pool->format == frame->format &&
524 pool->width == frame->width && pool->height == frame->height)
525 return 0;
526
527 avcodec_align_dimensions2(avctx, &w, &h, pool->stride_align);
528
529 do {
530 // NOTE: do not align linesizes individually, this breaks e.g. assumptions
531 // that linesize[0] == 2*linesize[1] in the MPEG-encoder for 4:2:2
532 av_image_fill_linesizes(picture.linesize, avctx->pix_fmt, w);
533 // increase alignment of w for next try (rhs gives the lowest bit set in w)
534 w += w & ~(w - 1);
535
536 unaligned = 0;
537 for (i = 0; i < 4; i++)
538 unaligned |= picture.linesize[i] % pool->stride_align[i];
539 } while (unaligned);
540
541 tmpsize = av_image_fill_pointers(picture.data, avctx->pix_fmt, h,
542 NULL, picture.linesize);
543 if (tmpsize < 0)
544 return -1;
545
546 for (i = 0; i < 3 && picture.data[i + 1]; i++)
547 size[i] = picture.data[i + 1] - picture.data[i];
548 size[i] = tmpsize - (picture.data[i] - picture.data[0]);
549
550 for (i = 0; i < 4; i++) {
551 av_buffer_pool_uninit(&pool->pools[i]);
552 pool->linesize[i] = picture.linesize[i];
553 if (size[i]) {
554 pool->pools[i] = av_buffer_pool_init(size[i] + 16 + STRIDE_ALIGN - 1,
555 CONFIG_MEMORY_POISONING ?
556 NULL :
557 av_buffer_allocz);
558 if (!pool->pools[i]) {
559 ret = AVERROR(ENOMEM);
560 goto fail;
561 }
562 }
563 }
564 pool->format = frame->format;
565 pool->width = frame->width;
566 pool->height = frame->height;
567
568 break;
569 }
570 case AVMEDIA_TYPE_AUDIO: {
571 int ch = av_frame_get_channels(frame); //av_get_channel_layout_nb_channels(frame->channel_layout);
572 int planar = av_sample_fmt_is_planar(frame->format);
573 int planes = planar ? ch : 1;
574
575 if (pool->format == frame->format && pool->planes == planes &&
576 pool->channels == ch && frame->nb_samples == pool->samples)
577 return 0;
578
579 av_buffer_pool_uninit(&pool->pools[0]);
580 ret = av_samples_get_buffer_size(&pool->linesize[0], ch,
581 frame->nb_samples, frame->format, 0);
582 if (ret < 0)
583 goto fail;
584
585 pool->pools[0] = av_buffer_pool_init(pool->linesize[0], NULL);
586 if (!pool->pools[0]) {
587 ret = AVERROR(ENOMEM);
588 goto fail;
589 }
590
591 pool->format = frame->format;
592 pool->planes = planes;
593 pool->channels = ch;
594 pool->samples = frame->nb_samples;
595 break;
596 }
597 default: av_assert0(0);
598 }
599 return 0;
600fail:
601 for (i = 0; i < 4; i++)
602 av_buffer_pool_uninit(&pool->pools[i]);
603 pool->format = -1;
604 pool->planes = pool->channels = pool->samples = 0;
605 pool->width = pool->height = 0;
606 return ret;
607}
608
609static int audio_get_buffer(AVCodecContext *avctx, AVFrame *frame)
610{
611 FramePool *pool = avctx->internal->pool;
612 int planes = pool->planes;
613 int i;
614
615 frame->linesize[0] = pool->linesize[0];
616
617 if (planes > AV_NUM_DATA_POINTERS) {
618 frame->extended_data = av_mallocz_array(planes, sizeof(*frame->extended_data));
619 frame->nb_extended_buf = planes - AV_NUM_DATA_POINTERS;
620 frame->extended_buf = av_mallocz_array(frame->nb_extended_buf,
621 sizeof(*frame->extended_buf));
622 if (!frame->extended_data || !frame->extended_buf) {
623 av_freep(&frame->extended_data);
624 av_freep(&frame->extended_buf);
625 return AVERROR(ENOMEM);
626 }
627 } else {
628 frame->extended_data = frame->data;
629 av_assert0(frame->nb_extended_buf == 0);
630 }
631
632 for (i = 0; i < FFMIN(planes, AV_NUM_DATA_POINTERS); i++) {
633 frame->buf[i] = av_buffer_pool_get(pool->pools[0]);
634 if (!frame->buf[i])
635 goto fail;
636 frame->extended_data[i] = frame->data[i] = frame->buf[i]->data;
637 }
638 for (i = 0; i < frame->nb_extended_buf; i++) {
639 frame->extended_buf[i] = av_buffer_pool_get(pool->pools[0]);
640 if (!frame->extended_buf[i])
641 goto fail;
642 frame->extended_data[i + AV_NUM_DATA_POINTERS] = frame->extended_buf[i]->data;
643 }
644
645 if (avctx->debug & FF_DEBUG_BUFFERS)
646 av_log(avctx, AV_LOG_DEBUG, "default_get_buffer called on frame %p", frame);
647
648 return 0;
649fail:
650 av_frame_unref(frame);
651 return AVERROR(ENOMEM);
652}
653
654static int video_get_buffer(AVCodecContext *s, AVFrame *pic)
655{
656 FramePool *pool = s->internal->pool;
657 int i;
658
659 if (pic->data[0]) {
660 av_log(s, AV_LOG_ERROR, "pic->data[0]!=NULL in avcodec_default_get_buffer\n");
661 return -1;
662 }
663
664 memset(pic->data, 0, sizeof(pic->data));
665 pic->extended_data = pic->data;
666
667 for (i = 0; i < 4 && pool->pools[i]; i++) {
668 pic->linesize[i] = pool->linesize[i];
669
670 pic->buf[i] = av_buffer_pool_get(pool->pools[i]);
671 if (!pic->buf[i])
672 goto fail;
673
674 pic->data[i] = pic->buf[i]->data;
675 }
676 for (; i < AV_NUM_DATA_POINTERS; i++) {
677 pic->data[i] = NULL;
678 pic->linesize[i] = 0;
679 }
680 if (pic->data[1] && !pic->data[2])
681 avpriv_set_systematic_pal2((uint32_t *)pic->data[1], s->pix_fmt);
682
683 if (s->debug & FF_DEBUG_BUFFERS)
684 av_log(s, AV_LOG_DEBUG, "default_get_buffer called on pic %p\n", pic);
685
686 return 0;
687fail:
688 av_frame_unref(pic);
689 return AVERROR(ENOMEM);
690}
691
692void avpriv_color_frame(AVFrame *frame, const int c[4])
693{
694 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(frame->format);
695 int p, y, x;
696
697 av_assert0(desc->flags & AV_PIX_FMT_FLAG_PLANAR);
698
699 for (p = 0; p<desc->nb_components; p++) {
700 uint8_t *dst = frame->data[p];
701 int is_chroma = p == 1 || p == 2;
702 int bytes = is_chroma ? FF_CEIL_RSHIFT(frame->width, desc->log2_chroma_w) : frame->width;
703 int height = is_chroma ? FF_CEIL_RSHIFT(frame->height, desc->log2_chroma_h) : frame->height;
704 for (y = 0; y < height; y++) {
705 if (desc->comp[0].depth_minus1 >= 8) {
706 for (x = 0; x<bytes; x++)
707 ((uint16_t*)dst)[x] = c[p];
708 }else
709 memset(dst, c[p], bytes);
710 dst += frame->linesize[p];
711 }
712 }
713}
714
715int avcodec_default_get_buffer2(AVCodecContext *avctx, AVFrame *frame, int flags)
716{
717 int ret;
718
719 if ((ret = update_frame_pool(avctx, frame)) < 0)
720 return ret;
721
722#if FF_API_GET_BUFFER
723FF_DISABLE_DEPRECATION_WARNINGS
724 frame->type = FF_BUFFER_TYPE_INTERNAL;
725FF_ENABLE_DEPRECATION_WARNINGS
726#endif
727
728 switch (avctx->codec_type) {
729 case AVMEDIA_TYPE_VIDEO:
730 return video_get_buffer(avctx, frame);
731 case AVMEDIA_TYPE_AUDIO:
732 return audio_get_buffer(avctx, frame);
733 default:
734 return -1;
735 }
736}
737
738int ff_init_buffer_info(AVCodecContext *avctx, AVFrame *frame)
739{
740 AVPacket *pkt = avctx->internal->pkt;
f6fa7814
DM		 741 int i;
742 static const struct {
743 enum AVPacketSideDataType packet;
744 enum AVFrameSideDataType frame;
745 } sd[] = {
746 { AV_PKT_DATA_REPLAYGAIN , AV_FRAME_DATA_REPLAYGAIN },
747 { AV_PKT_DATA_DISPLAYMATRIX, AV_FRAME_DATA_DISPLAYMATRIX },
748 { AV_PKT_DATA_STEREO3D, AV_FRAME_DATA_STEREO3D },
749 };
2ba45a60
DM		 750
751 if (pkt) {
2ba45a60
DM		 752 frame->pkt_pts = pkt->pts;
753 av_frame_set_pkt_pos (frame, pkt->pos);
754 av_frame_set_pkt_duration(frame, pkt->duration);
755 av_frame_set_pkt_size (frame, pkt->size);
756
f6fa7814
DM		 757 for (i = 0; i < FF_ARRAY_ELEMS(sd); i++) {
758 int size;
759 uint8_t *packet_sd = av_packet_get_side_data(pkt, sd[i].packet, &size);
760 if (packet_sd) {
761 AVFrameSideData *frame_sd = av_frame_new_side_data(frame,
762 sd[i].frame,
763 size);
764 if (!frame_sd)
765 return AVERROR(ENOMEM);
766
767 memcpy(frame_sd->data, packet_sd, size);
768 }
2ba45a60
DM		 769 }
770 } else {
771 frame->pkt_pts = AV_NOPTS_VALUE;
772 av_frame_set_pkt_pos (frame, -1);
773 av_frame_set_pkt_duration(frame, 0);
774 av_frame_set_pkt_size (frame, -1);
775 }
776 frame->reordered_opaque = avctx->reordered_opaque;
777
778 if (frame->color_primaries == AVCOL_PRI_UNSPECIFIED)
779 frame->color_primaries = avctx->color_primaries;
780 if (frame->color_trc == AVCOL_TRC_UNSPECIFIED)
781 frame->color_trc = avctx->color_trc;
782 if (av_frame_get_colorspace(frame) == AVCOL_SPC_UNSPECIFIED)
783 av_frame_set_colorspace(frame, avctx->colorspace);
784 if (av_frame_get_color_range(frame) == AVCOL_RANGE_UNSPECIFIED)
785 av_frame_set_color_range(frame, avctx->color_range);
786 if (frame->chroma_location == AVCHROMA_LOC_UNSPECIFIED)
787 frame->chroma_location = avctx->chroma_sample_location;
788
789 switch (avctx->codec->type) {
790 case AVMEDIA_TYPE_VIDEO:
791 frame->format = avctx->pix_fmt;
792 if (!frame->sample_aspect_ratio.num)
793 frame->sample_aspect_ratio = avctx->sample_aspect_ratio;
794
795 if (frame->width && frame->height &&
796 av_image_check_sar(frame->width, frame->height,
797 frame->sample_aspect_ratio) < 0) {
798 av_log(avctx, AV_LOG_WARNING, "ignoring invalid SAR: %u/%u\n",
799 frame->sample_aspect_ratio.num,
800 frame->sample_aspect_ratio.den);
801 frame->sample_aspect_ratio = (AVRational){ 0, 1 };
802 }
803
804 break;
805 case AVMEDIA_TYPE_AUDIO:
806 if (!frame->sample_rate)
807 frame->sample_rate = avctx->sample_rate;
808 if (frame->format < 0)
809 frame->format = avctx->sample_fmt;
810 if (!frame->channel_layout) {
811 if (avctx->channel_layout) {
812 if (av_get_channel_layout_nb_channels(avctx->channel_layout) !=
813 avctx->channels) {
814 av_log(avctx, AV_LOG_ERROR, "Inconsistent channel "
815 "configuration.\n");
816 return AVERROR(EINVAL);
817 }
818
819 frame->channel_layout = avctx->channel_layout;
820 } else {
821 if (avctx->channels > FF_SANE_NB_CHANNELS) {
822 av_log(avctx, AV_LOG_ERROR, "Too many channels: %d.\n",
823 avctx->channels);
824 return AVERROR(ENOSYS);
825 }
826 }
827 }
828 av_frame_set_channels(frame, avctx->channels);
829 break;
830 }
831 return 0;
832}
833
834#if FF_API_GET_BUFFER
835FF_DISABLE_DEPRECATION_WARNINGS
836int avcodec_default_get_buffer(AVCodecContext *avctx, AVFrame *frame)
837{
838 return avcodec_default_get_buffer2(avctx, frame, 0);
839}
840
841typedef struct CompatReleaseBufPriv {
842 AVCodecContext avctx;
843 AVFrame frame;
844 uint8_t avframe_padding[1024]; // hack to allow linking to a avutil with larger AVFrame
845} CompatReleaseBufPriv;
846
847static void compat_free_buffer(void *opaque, uint8_t *data)
848{
849 CompatReleaseBufPriv *priv = opaque;
850 if (priv->avctx.release_buffer)
851 priv->avctx.release_buffer(&priv->avctx, &priv->frame);
852 av_freep(&priv);
853}
854
855static void compat_release_buffer(void *opaque, uint8_t *data)
856{
857 AVBufferRef *buf = opaque;
858 av_buffer_unref(&buf);
859}
860FF_ENABLE_DEPRECATION_WARNINGS
861#endif
862
863int ff_decode_frame_props(AVCodecContext *avctx, AVFrame *frame)
864{
865 return ff_init_buffer_info(avctx, frame);
866}
867
868static int get_buffer_internal(AVCodecContext *avctx, AVFrame *frame, int flags)
869{
870 const AVHWAccel *hwaccel = avctx->hwaccel;
871 int override_dimensions = 1;
872 int ret;
873
874 if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
875 if ((ret = av_image_check_size(avctx->width, avctx->height, 0, avctx)) < 0 || avctx->pix_fmt<0) {
876 av_log(avctx, AV_LOG_ERROR, "video_get_buffer: image parameters invalid\n");
877 return AVERROR(EINVAL);
878 }
879 }
880 if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
881 if (frame->width <= 0 || frame->height <= 0) {
882 frame->width = FFMAX(avctx->width, FF_CEIL_RSHIFT(avctx->coded_width, avctx->lowres));
883 frame->height = FFMAX(avctx->height, FF_CEIL_RSHIFT(avctx->coded_height, avctx->lowres));
884 override_dimensions = 0;
885 }
886 }
887 ret = ff_decode_frame_props(avctx, frame);
888 if (ret < 0)
889 return ret;
890 if ((ret = ff_init_buffer_info(avctx, frame)) < 0)
891 return ret;
892
893 if (hwaccel && hwaccel->alloc_frame) {
894 ret = hwaccel->alloc_frame(avctx, frame);
895 goto end;
896 }
897
898#if FF_API_GET_BUFFER
899FF_DISABLE_DEPRECATION_WARNINGS
900 /*
901 * Wrap an old get_buffer()-allocated buffer in a bunch of AVBuffers.
902 * We wrap each plane in its own AVBuffer. Each of those has a reference to
903 * a dummy AVBuffer as its private data, unreffing it on free.
904 * When all the planes are freed, the dummy buffer's free callback calls
905 * release_buffer().
906 */
907 if (avctx->get_buffer) {
908 CompatReleaseBufPriv *priv = NULL;
909 AVBufferRef *dummy_buf = NULL;
910 int planes, i, ret;
911
912 if (flags & AV_GET_BUFFER_FLAG_REF)
913 frame->reference = 1;
914
915 ret = avctx->get_buffer(avctx, frame);
916 if (ret < 0)
917 return ret;
918
919 /* return if the buffers are already set up
920 * this would happen e.g. when a custom get_buffer() calls
921 * avcodec_default_get_buffer
922 */
923 if (frame->buf[0])
924 goto end0;
925
926 priv = av_mallocz(sizeof(*priv));
927 if (!priv) {
928 ret = AVERROR(ENOMEM);
929 goto fail;
930 }
931 priv->avctx = *avctx;
932 priv->frame = *frame;
933
934 dummy_buf = av_buffer_create(NULL, 0, compat_free_buffer, priv, 0);
935 if (!dummy_buf) {
936 ret = AVERROR(ENOMEM);
937 goto fail;
938 }
939
940#define WRAP_PLANE(ref_out, data, data_size) \
941do { \
942 AVBufferRef *dummy_ref = av_buffer_ref(dummy_buf); \
943 if (!dummy_ref) { \
944 ret = AVERROR(ENOMEM); \
945 goto fail; \
946 } \
947 ref_out = av_buffer_create(data, data_size, compat_release_buffer, \
948 dummy_ref, 0); \
949 if (!ref_out) { \
950 av_frame_unref(frame); \
951 ret = AVERROR(ENOMEM); \
952 goto fail; \
953 } \
954} while (0)
955
956 if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
957 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(frame->format);
958
959 planes = av_pix_fmt_count_planes(frame->format);
960 /* workaround for AVHWAccel plane count of 0, buf[0] is used as
961 check for allocated buffers: make libavcodec happy */
962 if (desc && desc->flags & AV_PIX_FMT_FLAG_HWACCEL)
963 planes = 1;
964 if (!desc || planes <= 0) {
965 ret = AVERROR(EINVAL);
966 goto fail;
967 }
968
969 for (i = 0; i < planes; i++) {
970 int v_shift = (i == 1 || i == 2) ? desc->log2_chroma_h : 0;
971 int plane_size = (frame->height >> v_shift) * frame->linesize[i];
972
973 WRAP_PLANE(frame->buf[i], frame->data[i], plane_size);
974 }
975 } else {
976 int planar = av_sample_fmt_is_planar(frame->format);
977 planes = planar ? avctx->channels : 1;
978
979 if (planes > FF_ARRAY_ELEMS(frame->buf)) {
980 frame->nb_extended_buf = planes - FF_ARRAY_ELEMS(frame->buf);
981 frame->extended_buf = av_malloc_array(sizeof(*frame->extended_buf),
982 frame->nb_extended_buf);
983 if (!frame->extended_buf) {
984 ret = AVERROR(ENOMEM);
985 goto fail;
986 }
987 }
988
989 for (i = 0; i < FFMIN(planes, FF_ARRAY_ELEMS(frame->buf)); i++)
990 WRAP_PLANE(frame->buf[i], frame->extended_data[i], frame->linesize[0]);
991
992 for (i = 0; i < frame->nb_extended_buf; i++)
993 WRAP_PLANE(frame->extended_buf[i],
994 frame->extended_data[i + FF_ARRAY_ELEMS(frame->buf)],
995 frame->linesize[0]);
996 }
997
998 av_buffer_unref(&dummy_buf);
999
1000end0:
1001 frame->width = avctx->width;
1002 frame->height = avctx->height;
1003
1004 return 0;
1005
1006fail:
1007 avctx->release_buffer(avctx, frame);
1008 av_freep(&priv);
1009 av_buffer_unref(&dummy_buf);
1010 return ret;
1011 }
1012FF_ENABLE_DEPRECATION_WARNINGS
1013#endif
1014
1015 ret = avctx->get_buffer2(avctx, frame, flags);
1016
1017end:
1018 if (avctx->codec_type == AVMEDIA_TYPE_VIDEO && !override_dimensions) {
1019 frame->width = avctx->width;
1020 frame->height = avctx->height;
1021 }
1022
1023 return ret;
1024}
1025
1026int ff_get_buffer(AVCodecContext *avctx, AVFrame *frame, int flags)
1027{
1028 int ret = get_buffer_internal(avctx, frame, flags);
1029 if (ret < 0)
1030 av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
1031 return ret;
1032}
1033
1034static int reget_buffer_internal(AVCodecContext *avctx, AVFrame *frame)
1035{
1036 AVFrame *tmp;
1037 int ret;
1038
1039 av_assert0(avctx->codec_type == AVMEDIA_TYPE_VIDEO);
1040
1041 if (frame->data[0] && (frame->width != avctx->width || frame->height != avctx->height || frame->format != avctx->pix_fmt)) {
1042 av_log(avctx, AV_LOG_WARNING, "Picture changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s in reget buffer()\n",
1043 frame->width, frame->height, av_get_pix_fmt_name(frame->format), avctx->width, avctx->height, av_get_pix_fmt_name(avctx->pix_fmt));
1044 av_frame_unref(frame);
1045 }
1046
1047 ff_init_buffer_info(avctx, frame);
1048
1049 if (!frame->data[0])
1050 return ff_get_buffer(avctx, frame, AV_GET_BUFFER_FLAG_REF);
1051
1052 if (av_frame_is_writable(frame))
1053 return ff_decode_frame_props(avctx, frame);
1054
1055 tmp = av_frame_alloc();
1056 if (!tmp)
1057 return AVERROR(ENOMEM);
1058
1059 av_frame_move_ref(tmp, frame);
1060
1061 ret = ff_get_buffer(avctx, frame, AV_GET_BUFFER_FLAG_REF);
1062 if (ret < 0) {
1063 av_frame_free(&tmp);
1064 return ret;
1065 }
1066
1067 av_frame_copy(frame, tmp);
1068 av_frame_free(&tmp);
1069
1070 return 0;
1071}
1072
1073int ff_reget_buffer(AVCodecContext *avctx, AVFrame *frame)
1074{
1075 int ret = reget_buffer_internal(avctx, frame);
1076 if (ret < 0)
1077 av_log(avctx, AV_LOG_ERROR, "reget_buffer() failed\n");
1078 return ret;
1079}
1080
1081#if FF_API_GET_BUFFER
1082void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic)
1083{
1084 av_assert0(s->codec_type == AVMEDIA_TYPE_VIDEO);
1085
1086 av_frame_unref(pic);
1087}
1088
1089int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic)
1090{
1091 av_assert0(0);
1092 return AVERROR_BUG;
1093}
1094#endif
1095
1096int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2), void *arg, int *ret, int count, int size)
1097{
1098 int i;
1099
1100 for (i = 0; i < count; i++) {
1101 int r = func(c, (char *)arg + i * size);
1102 if (ret)
1103 ret[i] = r;
1104 }
1105 return 0;
1106}
1107
1108int avcodec_default_execute2(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2, int jobnr, int threadnr), void *arg, int *ret, int count)
1109{
1110 int i;
1111
1112 for (i = 0; i < count; i++) {
1113 int r = func(c, arg, i, 0);
1114 if (ret)
1115 ret[i] = r;
1116 }
1117 return 0;
1118}
1119
1120enum AVPixelFormat avpriv_find_pix_fmt(const PixelFormatTag *tags,
1121 unsigned int fourcc)
1122{
1123 while (tags->pix_fmt >= 0) {
1124 if (tags->fourcc == fourcc)
1125 return tags->pix_fmt;
1126 tags++;
1127 }
1128 return AV_PIX_FMT_NONE;
1129}
1130
1131static int is_hwaccel_pix_fmt(enum AVPixelFormat pix_fmt)
1132{
1133 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
1134 return desc->flags & AV_PIX_FMT_FLAG_HWACCEL;
1135}
1136
1137enum AVPixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum AVPixelFormat *fmt)
1138{
1139 while (*fmt != AV_PIX_FMT_NONE && is_hwaccel_pix_fmt(*fmt))
1140 ++fmt;
1141 return fmt[0];
1142}
1143
1144static AVHWAccel *find_hwaccel(enum AVCodecID codec_id,
1145 enum AVPixelFormat pix_fmt)
1146{
1147 AVHWAccel *hwaccel = NULL;
1148
1149 while ((hwaccel = av_hwaccel_next(hwaccel)))
1150 if (hwaccel->id == codec_id
1151 && hwaccel->pix_fmt == pix_fmt)
1152 return hwaccel;
1153 return NULL;
1154}
1155
f6fa7814
DM		 1156static int setup_hwaccel(AVCodecContext *avctx,
1157 const enum AVPixelFormat fmt,
1158 const char *name)
1159{
1160 AVHWAccel *hwa = find_hwaccel(avctx->codec_id, fmt);
1161 int ret = 0;
1162
1163 if (!hwa) {
1164 av_log(avctx, AV_LOG_ERROR,
1165 "Could not find an AVHWAccel for the pixel format: %s",
1166 name);
1167 return AVERROR(ENOENT);
1168 }
1169
1170 if (hwa->priv_data_size) {
1171 avctx->internal->hwaccel_priv_data = av_mallocz(hwa->priv_data_size);
1172 if (!avctx->internal->hwaccel_priv_data)
1173 return AVERROR(ENOMEM);
1174 }
1175
1176 if (hwa->init) {
1177 ret = hwa->init(avctx);
1178 if (ret < 0) {
1179 av_freep(&avctx->internal->hwaccel_priv_data);
1180 return ret;
1181 }
1182 }
1183
1184 avctx->hwaccel = hwa;
1185
1186 return 0;
1187}
2ba45a60
DM		 1188
1189int ff_get_format(AVCodecContext *avctx, const enum AVPixelFormat *fmt)
1190{
1191 const AVPixFmtDescriptor *desc;
f6fa7814
DM		 1192 enum AVPixelFormat *choices;
1193 enum AVPixelFormat ret;
1194 unsigned n = 0;
1195
1196 while (fmt[n] != AV_PIX_FMT_NONE)
1197 ++n;
2ba45a60 1198
f6fa7814
DM		 1199 choices = av_malloc_array(n + 1, sizeof(*choices));
1200 if (!choices)
2ba45a60
DM		 1201 return AV_PIX_FMT_NONE;
1202
f6fa7814 1203 memcpy(choices, fmt, (n + 1) * sizeof(*choices));
2ba45a60 1204
f6fa7814
DM		 1205 for (;;) {
1206 if (avctx->hwaccel && avctx->hwaccel->uninit)
1207 avctx->hwaccel->uninit(avctx);
1208 av_freep(&avctx->internal->hwaccel_priv_data);
1209 avctx->hwaccel = NULL;
2ba45a60 1210
f6fa7814 1211 ret = avctx->get_format(avctx, choices);
2ba45a60 1212
f6fa7814
DM		 1213 desc = av_pix_fmt_desc_get(ret);
1214 if (!desc) {
1215 ret = AV_PIX_FMT_NONE;
1216 break;
2ba45a60
DM		 1217 }
1218
f6fa7814
DM		 1219 if (!(desc->flags & AV_PIX_FMT_FLAG_HWACCEL))
1220 break;
1221 if (avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU)
1222 break;
1223
1224 if (!setup_hwaccel(avctx, ret, desc->name))
1225 break;
1226
1227 /* Remove failed hwaccel from choices */
1228 for (n = 0; choices[n] != ret; n++)
1229 av_assert0(choices[n] != AV_PIX_FMT_NONE);
1230
1231 do
1232 choices[n] = choices[n + 1];
1233 while (choices[n++] != AV_PIX_FMT_NONE);
2ba45a60
DM		 1234 }
1235
f6fa7814 1236 av_freep(&choices);
2ba45a60
DM		 1237 return ret;
1238}
1239
1240#if FF_API_AVFRAME_LAVC
1241void avcodec_get_frame_defaults(AVFrame *frame)
1242{
1243#if LIBAVCODEC_VERSION_MAJOR >= 55
1244 // extended_data should explicitly be freed when needed, this code is unsafe currently
1245 // also this is not compatible to the <55 ABI/API
1246 if (frame->extended_data != frame->data && 0)
1247 av_freep(&frame->extended_data);
1248#endif
1249
1250 memset(frame, 0, sizeof(AVFrame));
1251 av_frame_unref(frame);
1252}
1253
1254AVFrame *avcodec_alloc_frame(void)
1255{
1256 return av_frame_alloc();
1257}
1258
1259void avcodec_free_frame(AVFrame **frame)
1260{
1261 av_frame_free(frame);
1262}
1263#endif
1264
1265MAKE_ACCESSORS(AVCodecContext, codec, AVRational, pkt_timebase)
1266MAKE_ACCESSORS(AVCodecContext, codec, const AVCodecDescriptor *, codec_descriptor)
1267MAKE_ACCESSORS(AVCodecContext, codec, int, lowres)
1268MAKE_ACCESSORS(AVCodecContext, codec, int, seek_preroll)
1269MAKE_ACCESSORS(AVCodecContext, codec, uint16_t*, chroma_intra_matrix)
1270
1271int av_codec_get_max_lowres(const AVCodec *codec)
1272{
1273 return codec->max_lowres;
1274}
1275
f6fa7814 1276static void get_subtitle_defaults(AVSubtitle *sub)
2ba45a60
DM		 1277{
1278 memset(sub, 0, sizeof(*sub));
1279 sub->pts = AV_NOPTS_VALUE;
1280}
1281
1282static int get_bit_rate(AVCodecContext *ctx)
1283{
1284 int bit_rate;
1285 int bits_per_sample;
1286
1287 switch (ctx->codec_type) {
1288 case AVMEDIA_TYPE_VIDEO:
1289 case AVMEDIA_TYPE_DATA:
1290 case AVMEDIA_TYPE_SUBTITLE:
1291 case AVMEDIA_TYPE_ATTACHMENT:
1292 bit_rate = ctx->bit_rate;
1293 break;
1294 case AVMEDIA_TYPE_AUDIO:
1295 bits_per_sample = av_get_bits_per_sample(ctx->codec_id);
1296 bit_rate = bits_per_sample ? ctx->sample_rate * ctx->channels * bits_per_sample : ctx->bit_rate;
1297 break;
1298 default:
1299 bit_rate = 0;
1300 break;
1301 }
1302 return bit_rate;
1303}
1304
1305int attribute_align_arg ff_codec_open2_recursive(AVCodecContext *avctx, const AVCodec *codec, AVDictionary **options)
1306{
1307 int ret = 0;
1308
1309 ff_unlock_avcodec();
1310
1311 ret = avcodec_open2(avctx, codec, options);
1312
1313 ff_lock_avcodec(avctx);
1314 return ret;
1315}
1316
1317int attribute_align_arg avcodec_open2(AVCodecContext *avctx, const AVCodec *codec, AVDictionary **options)
1318{
1319 int ret = 0;
1320 AVDictionary *tmp = NULL;
1321
1322 if (avcodec_is_open(avctx))
1323 return 0;
1324
1325 if ((!codec && !avctx->codec)) {
1326 av_log(avctx, AV_LOG_ERROR, "No codec provided to avcodec_open2()\n");
1327 return AVERROR(EINVAL);
1328 }
1329 if ((codec && avctx->codec && codec != avctx->codec)) {
1330 av_log(avctx, AV_LOG_ERROR, "This AVCodecContext was allocated for %s, "
1331 "but %s passed to avcodec_open2()\n", avctx->codec->name, codec->name);
1332 return AVERROR(EINVAL);
1333 }
1334 if (!codec)
1335 codec = avctx->codec;
1336
1337 if (avctx->extradata_size < 0 || avctx->extradata_size >= FF_MAX_EXTRADATA_SIZE)
1338 return AVERROR(EINVAL);
1339
1340 if (options)
1341 av_dict_copy(&tmp, *options, 0);
1342
1343 ret = ff_lock_avcodec(avctx);
1344 if (ret < 0)
1345 return ret;
1346
1347 avctx->internal = av_mallocz(sizeof(AVCodecInternal));
1348 if (!avctx->internal) {
1349 ret = AVERROR(ENOMEM);
1350 goto end;
1351 }
1352
1353 avctx->internal->pool = av_mallocz(sizeof(*avctx->internal->pool));
1354 if (!avctx->internal->pool) {
1355 ret = AVERROR(ENOMEM);
1356 goto free_and_end;
1357 }
1358
1359 avctx->internal->to_free = av_frame_alloc();
1360 if (!avctx->internal->to_free) {
1361 ret = AVERROR(ENOMEM);
1362 goto free_and_end;
1363 }
1364
1365 if (codec->priv_data_size > 0) {
1366 if (!avctx->priv_data) {
1367 avctx->priv_data = av_mallocz(codec->priv_data_size);
1368 if (!avctx->priv_data) {
1369 ret = AVERROR(ENOMEM);
1370 goto end;
1371 }
1372 if (codec->priv_class) {
1373 *(const AVClass **)avctx->priv_data = codec->priv_class;
1374 av_opt_set_defaults(avctx->priv_data);
1375 }
1376 }
1377 if (codec->priv_class && (ret = av_opt_set_dict(avctx->priv_data, &tmp)) < 0)
1378 goto free_and_end;
1379 } else {
1380 avctx->priv_data = NULL;
1381 }
1382 if ((ret = av_opt_set_dict(avctx, &tmp)) < 0)
1383 goto free_and_end;
1384
f6fa7814
DM		 1385 if (avctx->codec_whitelist && av_match_list(codec->name, avctx->codec_whitelist, ',') <= 0) {
1386 av_log(avctx, AV_LOG_ERROR, "Codec (%s) not on whitelist\n", codec->name);
1387 ret = AVERROR(EINVAL);
1388 goto free_and_end;
1389 }
1390
2ba45a60
DM		 1391 // only call ff_set_dimensions() for non H.264/VP6F codecs so as not to overwrite previously setup dimensions
1392 if (!(avctx->coded_width && avctx->coded_height && avctx->width && avctx->height &&
1393 (avctx->codec_id == AV_CODEC_ID_H264 || avctx->codec_id == AV_CODEC_ID_VP6F))) {
1394 if (avctx->coded_width && avctx->coded_height)
1395 ret = ff_set_dimensions(avctx, avctx->coded_width, avctx->coded_height);
1396 else if (avctx->width && avctx->height)
1397 ret = ff_set_dimensions(avctx, avctx->width, avctx->height);
1398 if (ret < 0)
1399 goto free_and_end;
1400 }
1401
1402 if ((avctx->coded_width || avctx->coded_height || avctx->width || avctx->height)
1403 && ( av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx) < 0
1404 || av_image_check_size(avctx->width, avctx->height, 0, avctx) < 0)) {
1405 av_log(avctx, AV_LOG_WARNING, "Ignoring invalid width/height values\n");
1406 ff_set_dimensions(avctx, 0, 0);
1407 }
1408
1409 if (avctx->width > 0 && avctx->height > 0) {
1410 if (av_image_check_sar(avctx->width, avctx->height,
1411 avctx->sample_aspect_ratio) < 0) {
1412 av_log(avctx, AV_LOG_WARNING, "ignoring invalid SAR: %u/%u\n",
1413 avctx->sample_aspect_ratio.num,
1414 avctx->sample_aspect_ratio.den);
1415 avctx->sample_aspect_ratio = (AVRational){ 0, 1 };
1416 }
1417 }
1418
1419 /* if the decoder init function was already called previously,
1420 * free the already allocated subtitle_header before overwriting it */
1421 if (av_codec_is_decoder(codec))
1422 av_freep(&avctx->subtitle_header);
1423
1424 if (avctx->channels > FF_SANE_NB_CHANNELS) {
1425 ret = AVERROR(EINVAL);
1426 goto free_and_end;
1427 }
1428
1429 avctx->codec = codec;
1430 if ((avctx->codec_type == AVMEDIA_TYPE_UNKNOWN || avctx->codec_type == codec->type) &&
1431 avctx->codec_id == AV_CODEC_ID_NONE) {
1432 avctx->codec_type = codec->type;
1433 avctx->codec_id = codec->id;
1434 }
1435 if (avctx->codec_id != codec->id || (avctx->codec_type != codec->type
1436 && avctx->codec_type != AVMEDIA_TYPE_ATTACHMENT)) {
1437 av_log(avctx, AV_LOG_ERROR, "Codec type or id mismatches\n");
1438 ret = AVERROR(EINVAL);
1439 goto free_and_end;
1440 }
1441 avctx->frame_number = 0;
1442 avctx->codec_descriptor = avcodec_descriptor_get(avctx->codec_id);
1443
1444 if (avctx->codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
1445 avctx->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
1446 const char *codec_string = av_codec_is_encoder(codec) ? "encoder" : "decoder";
1447 AVCodec *codec2;
1448 av_log(avctx, AV_LOG_ERROR,
1449 "The %s '%s' is experimental but experimental codecs are not enabled, "
1450 "add '-strict %d' if you want to use it.\n",
1451 codec_string, codec->name, FF_COMPLIANCE_EXPERIMENTAL);
1452 codec2 = av_codec_is_encoder(codec) ? avcodec_find_encoder(codec->id) : avcodec_find_decoder(codec->id);
1453 if (!(codec2->capabilities & CODEC_CAP_EXPERIMENTAL))
1454 av_log(avctx, AV_LOG_ERROR, "Alternatively use the non experimental %s '%s'.\n",
1455 codec_string, codec2->name);
1456 ret = AVERROR_EXPERIMENTAL;
1457 goto free_and_end;
1458 }
1459
1460 if (avctx->codec_type == AVMEDIA_TYPE_AUDIO &&
1461 (!avctx->time_base.num || !avctx->time_base.den)) {
1462 avctx->time_base.num = 1;
1463 avctx->time_base.den = avctx->sample_rate;
1464 }
1465
1466 if (!HAVE_THREADS)
1467 av_log(avctx, AV_LOG_WARNING, "Warning: not compiled with thread support, using thread emulation\n");
1468
1469 if (CONFIG_FRAME_THREAD_ENCODER) {
1470 ff_unlock_avcodec(); //we will instanciate a few encoders thus kick the counter to prevent false detection of a problem
1471 ret = ff_frame_thread_encoder_init(avctx, options ? *options : NULL);
1472 ff_lock_avcodec(avctx);
1473 if (ret < 0)
1474 goto free_and_end;
1475 }
1476
1477 if (HAVE_THREADS
1478 && !(avctx->internal->frame_thread_encoder && (avctx->active_thread_type&FF_THREAD_FRAME))) {
1479 ret = ff_thread_init(avctx);
1480 if (ret < 0) {
1481 goto free_and_end;
1482 }
1483 }
1484 if (!HAVE_THREADS && !(codec->capabilities & CODEC_CAP_AUTO_THREADS))
1485 avctx->thread_count = 1;
1486
1487 if (avctx->codec->max_lowres < avctx->lowres || avctx->lowres < 0) {
1488 av_log(avctx, AV_LOG_ERROR, "The maximum value for lowres supported by the decoder is %d\n",
1489 avctx->codec->max_lowres);
1490 ret = AVERROR(EINVAL);
1491 goto free_and_end;
1492 }
1493
1494#if FF_API_VISMV
1495 if (avctx->debug_mv)
1496 av_log(avctx, AV_LOG_WARNING, "The 'vismv' option is deprecated, "
1497 "see the codecview filter instead.\n");
1498#endif
1499
1500 if (av_codec_is_encoder(avctx->codec)) {
1501 int i;
1502 if (avctx->codec->sample_fmts) {
1503 for (i = 0; avctx->codec->sample_fmts[i] != AV_SAMPLE_FMT_NONE; i++) {
1504 if (avctx->sample_fmt == avctx->codec->sample_fmts[i])
1505 break;
1506 if (avctx->channels == 1 &&
1507 av_get_planar_sample_fmt(avctx->sample_fmt) ==
1508 av_get_planar_sample_fmt(avctx->codec->sample_fmts[i])) {
1509 avctx->sample_fmt = avctx->codec->sample_fmts[i];
1510 break;
1511 }
1512 }
1513 if (avctx->codec->sample_fmts[i] == AV_SAMPLE_FMT_NONE) {
1514 char buf[128];
1515 snprintf(buf, sizeof(buf), "%d", avctx->sample_fmt);
1516 av_log(avctx, AV_LOG_ERROR, "Specified sample format %s is invalid or not supported\n",
1517 (char *)av_x_if_null(av_get_sample_fmt_name(avctx->sample_fmt), buf));
1518 ret = AVERROR(EINVAL);
1519 goto free_and_end;
1520 }
1521 }
1522 if (avctx->codec->pix_fmts) {
1523 for (i = 0; avctx->codec->pix_fmts[i] != AV_PIX_FMT_NONE; i++)
1524 if (avctx->pix_fmt == avctx->codec->pix_fmts[i])
1525 break;
1526 if (avctx->codec->pix_fmts[i] == AV_PIX_FMT_NONE
1527 && !((avctx->codec_id == AV_CODEC_ID_MJPEG || avctx->codec_id == AV_CODEC_ID_LJPEG)
1528 && avctx->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL)) {
1529 char buf[128];
1530 snprintf(buf, sizeof(buf), "%d", avctx->pix_fmt);
1531 av_log(avctx, AV_LOG_ERROR, "Specified pixel format %s is invalid or not supported\n",
1532 (char *)av_x_if_null(av_get_pix_fmt_name(avctx->pix_fmt), buf));
1533 ret = AVERROR(EINVAL);
1534 goto free_and_end;
1535 }
f6fa7814
DM		 1536 if (avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ420P ||
1537 avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ411P ||
1538 avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ422P ||
1539 avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ440P ||
1540 avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ444P)
1541 avctx->color_range = AVCOL_RANGE_JPEG;
2ba45a60
DM		 1542 }
1543 if (avctx->codec->supported_samplerates) {
1544 for (i = 0; avctx->codec->supported_samplerates[i] != 0; i++)
1545 if (avctx->sample_rate == avctx->codec->supported_samplerates[i])
1546 break;
1547 if (avctx->codec->supported_samplerates[i] == 0) {
1548 av_log(avctx, AV_LOG_ERROR, "Specified sample rate %d is not supported\n",
1549 avctx->sample_rate);
1550 ret = AVERROR(EINVAL);
1551 goto free_and_end;
1552 }
1553 }
1554 if (avctx->codec->channel_layouts) {
1555 if (!avctx->channel_layout) {
1556 av_log(avctx, AV_LOG_WARNING, "Channel layout not specified\n");
1557 } else {
1558 for (i = 0; avctx->codec->channel_layouts[i] != 0; i++)
1559 if (avctx->channel_layout == avctx->codec->channel_layouts[i])
1560 break;
1561 if (avctx->codec->channel_layouts[i] == 0) {
1562 char buf[512];
1563 av_get_channel_layout_string(buf, sizeof(buf), -1, avctx->channel_layout);
1564 av_log(avctx, AV_LOG_ERROR, "Specified channel layout '%s' is not supported\n", buf);
1565 ret = AVERROR(EINVAL);
1566 goto free_and_end;
1567 }
1568 }
1569 }
1570 if (avctx->channel_layout && avctx->channels) {
1571 int channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
1572 if (channels != avctx->channels) {
1573 char buf[512];
1574 av_get_channel_layout_string(buf, sizeof(buf), -1, avctx->channel_layout);
1575 av_log(avctx, AV_LOG_ERROR,
1576 "Channel layout '%s' with %d channels does not match number of specified channels %d\n",
1577 buf, channels, avctx->channels);
1578 ret = AVERROR(EINVAL);
1579 goto free_and_end;
1580 }
1581 } else if (avctx->channel_layout) {
1582 avctx->channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
1583 }
1584 if(avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
1585 if (avctx->width <= 0 || avctx->height <= 0) {
1586 av_log(avctx, AV_LOG_ERROR, "dimensions not set\n");
1587 ret = AVERROR(EINVAL);
1588 goto free_and_end;
1589 }
1590 }
1591 if ( (avctx->codec_type == AVMEDIA_TYPE_VIDEO || avctx->codec_type == AVMEDIA_TYPE_AUDIO)
1592 && avctx->bit_rate>0 && avctx->bit_rate<1000) {
1593 av_log(avctx, AV_LOG_WARNING, "Bitrate %d is extremely low, maybe you mean %dk\n", avctx->bit_rate, avctx->bit_rate);
1594 }
1595
1596 if (!avctx->rc_initial_buffer_occupancy)
1597 avctx->rc_initial_buffer_occupancy = avctx->rc_buffer_size * 3 / 4;
1598 }
1599
1600 avctx->pts_correction_num_faulty_pts =
1601 avctx->pts_correction_num_faulty_dts = 0;
1602 avctx->pts_correction_last_pts =
1603 avctx->pts_correction_last_dts = INT64_MIN;
1604
1605 if ( avctx->codec->init && (!(avctx->active_thread_type&FF_THREAD_FRAME)
1606 || avctx->internal->frame_thread_encoder)) {
1607 ret = avctx->codec->init(avctx);
1608 if (ret < 0) {
1609 goto free_and_end;
1610 }
1611 }
1612
1613 ret=0;
1614
f6fa7814
DM		 1615#if FF_API_AUDIOENC_DELAY
1616 if (av_codec_is_encoder(avctx->codec))
1617 avctx->delay = avctx->initial_padding;
1618#endif
1619
2ba45a60
DM		 1620 if (av_codec_is_decoder(avctx->codec)) {
1621 if (!avctx->bit_rate)
1622 avctx->bit_rate = get_bit_rate(avctx);
1623 /* validate channel layout from the decoder */
1624 if (avctx->channel_layout) {
1625 int channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
1626 if (!avctx->channels)
1627 avctx->channels = channels;
1628 else if (channels != avctx->channels) {
1629 char buf[512];
1630 av_get_channel_layout_string(buf, sizeof(buf), -1, avctx->channel_layout);
1631 av_log(avctx, AV_LOG_WARNING,
1632 "Channel layout '%s' with %d channels does not match specified number of channels %d: "
1633 "ignoring specified channel layout\n",
1634 buf, channels, avctx->channels);
1635 avctx->channel_layout = 0;
1636 }
1637 }
1638 if (avctx->channels && avctx->channels < 0 ||
1639 avctx->channels > FF_SANE_NB_CHANNELS) {
1640 ret = AVERROR(EINVAL);
1641 goto free_and_end;
1642 }
1643 if (avctx->sub_charenc) {
1644 if (avctx->codec_type != AVMEDIA_TYPE_SUBTITLE) {
1645 av_log(avctx, AV_LOG_ERROR, "Character encoding is only "
1646 "supported with subtitles codecs\n");
1647 ret = AVERROR(EINVAL);
1648 goto free_and_end;
1649 } else if (avctx->codec_descriptor->props & AV_CODEC_PROP_BITMAP_SUB) {
1650 av_log(avctx, AV_LOG_WARNING, "Codec '%s' is bitmap-based, "
1651 "subtitles character encoding will be ignored\n",
1652 avctx->codec_descriptor->name);
1653 avctx->sub_charenc_mode = FF_SUB_CHARENC_MODE_DO_NOTHING;
1654 } else {
1655 /* input character encoding is set for a text based subtitle
1656 * codec at this point */
1657 if (avctx->sub_charenc_mode == FF_SUB_CHARENC_MODE_AUTOMATIC)
1658 avctx->sub_charenc_mode = FF_SUB_CHARENC_MODE_PRE_DECODER;
1659
1660 if (avctx->sub_charenc_mode == FF_SUB_CHARENC_MODE_PRE_DECODER) {
1661#if CONFIG_ICONV
1662 iconv_t cd = iconv_open("UTF-8", avctx->sub_charenc);
1663 if (cd == (iconv_t)-1) {
f6fa7814 1664 ret = AVERROR(errno);
2ba45a60
DM		 1665 av_log(avctx, AV_LOG_ERROR, "Unable to open iconv context "
1666 "with input character encoding \"%s\"\n", avctx->sub_charenc);
2ba45a60
DM		 1667 goto free_and_end;
1668 }
1669 iconv_close(cd);
1670#else
1671 av_log(avctx, AV_LOG_ERROR, "Character encoding subtitles "
1672 "conversion needs a libavcodec built with iconv support "
1673 "for this codec\n");
1674 ret = AVERROR(ENOSYS);
1675 goto free_and_end;
1676#endif
1677 }
1678 }
1679 }
f6fa7814
DM		 1680
1681#if FF_API_AVCTX_TIMEBASE
1682 if (avctx->framerate.num > 0 && avctx->framerate.den > 0)
1683 avctx->time_base = av_inv_q(av_mul_q(avctx->framerate, (AVRational){avctx->ticks_per_frame, 1}));
1684#endif
2ba45a60
DM		 1685 }
1686end:
1687 ff_unlock_avcodec();
1688 if (options) {
1689 av_dict_free(options);
1690 *options = tmp;
1691 }
1692
1693 return ret;
1694free_and_end:
1695 av_dict_free(&tmp);
f6fa7814
DM		 1696 if (codec->priv_class && codec->priv_data_size)
1697 av_opt_free(avctx->priv_data);
2ba45a60
DM		 1698 av_freep(&avctx->priv_data);
1699 if (avctx->internal) {
1700 av_frame_free(&avctx->internal->to_free);
1701 av_freep(&avctx->internal->pool);
1702 }
1703 av_freep(&avctx->internal);
1704 avctx->codec = NULL;
1705 goto end;
1706}
1707
1708int ff_alloc_packet2(AVCodecContext *avctx, AVPacket *avpkt, int64_t size)
1709{
1710 if (avpkt->size < 0) {
1711 av_log(avctx, AV_LOG_ERROR, "Invalid negative user packet size %d\n", avpkt->size);
1712 return AVERROR(EINVAL);
1713 }
1714 if (size < 0 || size > INT_MAX - FF_INPUT_BUFFER_PADDING_SIZE) {
1715 av_log(avctx, AV_LOG_ERROR, "Invalid minimum required packet size %"PRId64" (max allowed is %d)\n",
1716 size, INT_MAX - FF_INPUT_BUFFER_PADDING_SIZE);
1717 return AVERROR(EINVAL);
1718 }
1719
1720 if (avctx) {
1721 av_assert0(!avpkt->data || avpkt->data != avctx->internal->byte_buffer);
1722 if (!avpkt->data || avpkt->size < size) {
1723 av_fast_padded_malloc(&avctx->internal->byte_buffer, &avctx->internal->byte_buffer_size, size);
1724 avpkt->data = avctx->internal->byte_buffer;
1725 avpkt->size = avctx->internal->byte_buffer_size;
1726#if FF_API_DESTRUCT_PACKET
1727FF_DISABLE_DEPRECATION_WARNINGS
1728 avpkt->destruct = NULL;
1729FF_ENABLE_DEPRECATION_WARNINGS
1730#endif
1731 }
1732 }
1733
1734 if (avpkt->data) {
1735 AVBufferRef *buf = avpkt->buf;
1736#if FF_API_DESTRUCT_PACKET
1737FF_DISABLE_DEPRECATION_WARNINGS
1738 void *destruct = avpkt->destruct;
1739FF_ENABLE_DEPRECATION_WARNINGS
1740#endif
1741
1742 if (avpkt->size < size) {
1743 av_log(avctx, AV_LOG_ERROR, "User packet is too small (%d < %"PRId64")\n", avpkt->size, size);
1744 return AVERROR(EINVAL);
1745 }
1746
1747 av_init_packet(avpkt);
1748#if FF_API_DESTRUCT_PACKET
1749FF_DISABLE_DEPRECATION_WARNINGS
1750 avpkt->destruct = destruct;
1751FF_ENABLE_DEPRECATION_WARNINGS
1752#endif
1753 avpkt->buf = buf;
1754 avpkt->size = size;
1755 return 0;
1756 } else {
1757 int ret = av_new_packet(avpkt, size);
1758 if (ret < 0)
1759 av_log(avctx, AV_LOG_ERROR, "Failed to allocate packet of size %"PRId64"\n", size);
1760 return ret;
1761 }
1762}
1763
1764int ff_alloc_packet(AVPacket *avpkt, int size)
1765{
1766 return ff_alloc_packet2(NULL, avpkt, size);
1767}
1768
1769/**
1770 * Pad last frame with silence.
1771 */
1772static int pad_last_frame(AVCodecContext *s, AVFrame **dst, const AVFrame *src)
1773{
1774 AVFrame *frame = NULL;
1775 int ret;
1776
1777 if (!(frame = av_frame_alloc()))
1778 return AVERROR(ENOMEM);
1779
1780 frame->format = src->format;
1781 frame->channel_layout = src->channel_layout;
1782 av_frame_set_channels(frame, av_frame_get_channels(src));
1783 frame->nb_samples = s->frame_size;
1784 ret = av_frame_get_buffer(frame, 32);
1785 if (ret < 0)
1786 goto fail;
1787
1788 ret = av_frame_copy_props(frame, src);
1789 if (ret < 0)
1790 goto fail;
1791
1792 if ((ret = av_samples_copy(frame->extended_data, src->extended_data, 0, 0,
1793 src->nb_samples, s->channels, s->sample_fmt)) < 0)
1794 goto fail;
1795 if ((ret = av_samples_set_silence(frame->extended_data, src->nb_samples,
1796 frame->nb_samples - src->nb_samples,
1797 s->channels, s->sample_fmt)) < 0)
1798 goto fail;
1799
1800 *dst = frame;
1801
1802 return 0;
1803
1804fail:
1805 av_frame_free(&frame);
1806 return ret;
1807}
1808
1809int attribute_align_arg avcodec_encode_audio2(AVCodecContext *avctx,
1810 AVPacket *avpkt,
1811 const AVFrame *frame,
1812 int *got_packet_ptr)
1813{
1814 AVFrame *extended_frame = NULL;
1815 AVFrame *padded_frame = NULL;
1816 int ret;
1817 AVPacket user_pkt = *avpkt;
1818 int needs_realloc = !user_pkt.data;
1819
1820 *got_packet_ptr = 0;
1821
1822 if (!(avctx->codec->capabilities & CODEC_CAP_DELAY) && !frame) {
1823 av_free_packet(avpkt);
1824 av_init_packet(avpkt);
1825 return 0;
1826 }
1827
1828 /* ensure that extended_data is properly set */
1829 if (frame && !frame->extended_data) {
1830 if (av_sample_fmt_is_planar(avctx->sample_fmt) &&
1831 avctx->channels > AV_NUM_DATA_POINTERS) {
1832 av_log(avctx, AV_LOG_ERROR, "Encoding to a planar sample format, "
1833 "with more than %d channels, but extended_data is not set.\n",
1834 AV_NUM_DATA_POINTERS);
1835 return AVERROR(EINVAL);
1836 }
1837 av_log(avctx, AV_LOG_WARNING, "extended_data is not set.\n");
1838
1839 extended_frame = av_frame_alloc();
1840 if (!extended_frame)
1841 return AVERROR(ENOMEM);
1842
1843 memcpy(extended_frame, frame, sizeof(AVFrame));
1844 extended_frame->extended_data = extended_frame->data;
1845 frame = extended_frame;
1846 }
1847
1848 /* check for valid frame size */
1849 if (frame) {
1850 if (avctx->codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME) {
1851 if (frame->nb_samples > avctx->frame_size) {
1852 av_log(avctx, AV_LOG_ERROR, "more samples than frame size (avcodec_encode_audio2)\n");
1853 ret = AVERROR(EINVAL);
1854 goto end;
1855 }
1856 } else if (!(avctx->codec->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE)) {
1857 if (frame->nb_samples < avctx->frame_size &&
1858 !avctx->internal->last_audio_frame) {
1859 ret = pad_last_frame(avctx, &padded_frame, frame);
1860 if (ret < 0)
1861 goto end;
1862
1863 frame = padded_frame;
1864 avctx->internal->last_audio_frame = 1;
1865 }
1866
1867 if (frame->nb_samples != avctx->frame_size) {
1868 av_log(avctx, AV_LOG_ERROR, "nb_samples (%d) != frame_size (%d) (avcodec_encode_audio2)\n", frame->nb_samples, avctx->frame_size);
1869 ret = AVERROR(EINVAL);
1870 goto end;
1871 }
1872 }
1873 }
1874
1875 ret = avctx->codec->encode2(avctx, avpkt, frame, got_packet_ptr);
1876 if (!ret) {
1877 if (*got_packet_ptr) {
1878 if (!(avctx->codec->capabilities & CODEC_CAP_DELAY)) {
1879 if (avpkt->pts == AV_NOPTS_VALUE)
1880 avpkt->pts = frame->pts;
1881 if (!avpkt->duration)
1882 avpkt->duration = ff_samples_to_time_base(avctx,
1883 frame->nb_samples);
1884 }
1885 avpkt->dts = avpkt->pts;
1886 } else {
1887 avpkt->size = 0;
1888 }
1889 }
1890 if (avpkt->data && avpkt->data == avctx->internal->byte_buffer) {
1891 needs_realloc = 0;
1892 if (user_pkt.data) {
1893 if (user_pkt.size >= avpkt->size) {
1894 memcpy(user_pkt.data, avpkt->data, avpkt->size);
1895 } else {
1896 av_log(avctx, AV_LOG_ERROR, "Provided packet is too small, needs to be %d\n", avpkt->size);
1897 avpkt->size = user_pkt.size;
1898 ret = -1;
1899 }
1900 avpkt->buf = user_pkt.buf;
1901 avpkt->data = user_pkt.data;
1902#if FF_API_DESTRUCT_PACKET
1903FF_DISABLE_DEPRECATION_WARNINGS
1904 avpkt->destruct = user_pkt.destruct;
1905FF_ENABLE_DEPRECATION_WARNINGS
1906#endif
1907 } else {
1908 if (av_dup_packet(avpkt) < 0) {
1909 ret = AVERROR(ENOMEM);
1910 }
1911 }
1912 }
1913
1914 if (!ret) {
1915 if (needs_realloc && avpkt->data) {
1916 ret = av_buffer_realloc(&avpkt->buf, avpkt->size + FF_INPUT_BUFFER_PADDING_SIZE);
1917 if (ret >= 0)
1918 avpkt->data = avpkt->buf->data;
1919 }
1920
1921 avctx->frame_number++;
1922 }
1923
1924 if (ret < 0 || !*got_packet_ptr) {
1925 av_free_packet(avpkt);
1926 av_init_packet(avpkt);
1927 goto end;
1928 }
1929
1930 /* NOTE: if we add any audio encoders which output non-keyframe packets,
1931 * this needs to be moved to the encoders, but for now we can do it
1932 * here to simplify things */
1933 avpkt->flags |= AV_PKT_FLAG_KEY;
1934
1935end:
1936 av_frame_free(&padded_frame);
1937 av_free(extended_frame);
1938
f6fa7814
DM		 1939#if FF_API_AUDIOENC_DELAY
1940 avctx->delay = avctx->initial_padding;
1941#endif
1942
2ba45a60
DM		 1943 return ret;
1944}
1945
1946#if FF_API_OLD_ENCODE_AUDIO
1947int attribute_align_arg avcodec_encode_audio(AVCodecContext *avctx,
1948 uint8_t *buf, int buf_size,
1949 const short *samples)
1950{
1951 AVPacket pkt;
1952 AVFrame *frame;
1953 int ret, samples_size, got_packet;
1954
1955 av_init_packet(&pkt);
1956 pkt.data = buf;
1957 pkt.size = buf_size;
1958
1959 if (samples) {
1960 frame = av_frame_alloc();
1961 if (!frame)
1962 return AVERROR(ENOMEM);
1963
1964 if (avctx->frame_size) {
1965 frame->nb_samples = avctx->frame_size;
1966 } else {
1967 /* if frame_size is not set, the number of samples must be
1968 * calculated from the buffer size */
1969 int64_t nb_samples;
1970 if (!av_get_bits_per_sample(avctx->codec_id)) {
1971 av_log(avctx, AV_LOG_ERROR, "avcodec_encode_audio() does not "
1972 "support this codec\n");
1973 av_frame_free(&frame);
1974 return AVERROR(EINVAL);
1975 }
1976 nb_samples = (int64_t)buf_size * 8 /
1977 (av_get_bits_per_sample(avctx->codec_id) *
1978 avctx->channels);
1979 if (nb_samples >= INT_MAX) {
1980 av_frame_free(&frame);
1981 return AVERROR(EINVAL);
1982 }
1983 frame->nb_samples = nb_samples;
1984 }
1985
1986 /* it is assumed that the samples buffer is large enough based on the
1987 * relevant parameters */
1988 samples_size = av_samples_get_buffer_size(NULL, avctx->channels,
1989 frame->nb_samples,
1990 avctx->sample_fmt, 1);
1991 if ((ret = avcodec_fill_audio_frame(frame, avctx->channels,
1992 avctx->sample_fmt,
1993 (const uint8_t *)samples,
1994 samples_size, 1)) < 0) {
1995 av_frame_free(&frame);
1996 return ret;
1997 }
1998
1999 /* fabricate frame pts from sample count.
2000 * this is needed because the avcodec_encode_audio() API does not have
2001 * a way for the user to provide pts */
2002 if (avctx->sample_rate && avctx->time_base.num)
2003 frame->pts = ff_samples_to_time_base(avctx,
2004 avctx->internal->sample_count);
2005 else
2006 frame->pts = AV_NOPTS_VALUE;
2007 avctx->internal->sample_count += frame->nb_samples;
2008 } else {
2009 frame = NULL;
2010 }
2011
2012 got_packet = 0;
2013 ret = avcodec_encode_audio2(avctx, &pkt, frame, &got_packet);
2014 if (!ret && got_packet && avctx->coded_frame) {
2015 avctx->coded_frame->pts = pkt.pts;
2016 avctx->coded_frame->key_frame = !!(pkt.flags & AV_PKT_FLAG_KEY);
2017 }
2018 /* free any side data since we cannot return it */
2019 av_packet_free_side_data(&pkt);
2020
2021 if (frame && frame->extended_data != frame->data)
2022 av_freep(&frame->extended_data);
2023
2024 av_frame_free(&frame);
2025 return ret ? ret : pkt.size;
2026}
2027
2028#endif
2029
2030#if FF_API_OLD_ENCODE_VIDEO
2031int attribute_align_arg avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
2032 const AVFrame *pict)
2033{
2034 AVPacket pkt;
2035 int ret, got_packet = 0;
2036
2037 if (buf_size < FF_MIN_BUFFER_SIZE) {
2038 av_log(avctx, AV_LOG_ERROR, "buffer smaller than minimum size\n");
2039 return -1;
2040 }
2041
2042 av_init_packet(&pkt);
2043 pkt.data = buf;
2044 pkt.size = buf_size;
2045
2046 ret = avcodec_encode_video2(avctx, &pkt, pict, &got_packet);
2047 if (!ret && got_packet && avctx->coded_frame) {
2048 avctx->coded_frame->pts = pkt.pts;
2049 avctx->coded_frame->key_frame = !!(pkt.flags & AV_PKT_FLAG_KEY);
2050 }
2051
2052 /* free any side data since we cannot return it */
2053 if (pkt.side_data_elems > 0) {
2054 int i;
2055 for (i = 0; i < pkt.side_data_elems; i++)
2056 av_free(pkt.side_data[i].data);
2057 av_freep(&pkt.side_data);
2058 pkt.side_data_elems = 0;
2059 }
2060
2061 return ret ? ret : pkt.size;
2062}
2063
2064#endif
2065
2066int attribute_align_arg avcodec_encode_video2(AVCodecContext *avctx,
2067 AVPacket *avpkt,
2068 const AVFrame *frame,
2069 int *got_packet_ptr)
2070{
2071 int ret;
2072 AVPacket user_pkt = *avpkt;
2073 int needs_realloc = !user_pkt.data;
2074
2075 *got_packet_ptr = 0;
2076
2077 if(CONFIG_FRAME_THREAD_ENCODER &&
2078 avctx->internal->frame_thread_encoder && (avctx->active_thread_type&FF_THREAD_FRAME))
2079 return ff_thread_video_encode_frame(avctx, avpkt, frame, got_packet_ptr);
2080
2081 if ((avctx->flags&CODEC_FLAG_PASS1) && avctx->stats_out)
2082 avctx->stats_out[0] = '\0';
2083
2084 if (!(avctx->codec->capabilities & CODEC_CAP_DELAY) && !frame) {
2085 av_free_packet(avpkt);
2086 av_init_packet(avpkt);
2087 avpkt->size = 0;
2088 return 0;
2089 }
2090
2091 if (av_image_check_size(avctx->width, avctx->height, 0, avctx))
2092 return AVERROR(EINVAL);
2093
2094 av_assert0(avctx->codec->encode2);
2095
2096 ret = avctx->codec->encode2(avctx, avpkt, frame, got_packet_ptr);
2097 av_assert0(ret <= 0);
2098
2099 if (avpkt->data && avpkt->data == avctx->internal->byte_buffer) {
2100 needs_realloc = 0;
2101 if (user_pkt.data) {
2102 if (user_pkt.size >= avpkt->size) {
2103 memcpy(user_pkt.data, avpkt->data, avpkt->size);
2104 } else {
2105 av_log(avctx, AV_LOG_ERROR, "Provided packet is too small, needs to be %d\n", avpkt->size);
2106 avpkt->size = user_pkt.size;
2107 ret = -1;
2108 }
2109 avpkt->buf = user_pkt.buf;
2110 avpkt->data = user_pkt.data;
2111#if FF_API_DESTRUCT_PACKET
2112FF_DISABLE_DEPRECATION_WARNINGS
2113 avpkt->destruct = user_pkt.destruct;
2114FF_ENABLE_DEPRECATION_WARNINGS
2115#endif
2116 } else {
2117 if (av_dup_packet(avpkt) < 0) {
2118 ret = AVERROR(ENOMEM);
2119 }
2120 }
2121 }
2122
2123 if (!ret) {
2124 if (!*got_packet_ptr)
2125 avpkt->size = 0;
2126 else if (!(avctx->codec->capabilities & CODEC_CAP_DELAY))
2127 avpkt->pts = avpkt->dts = frame->pts;
2128
2129 if (needs_realloc && avpkt->data) {
2130 ret = av_buffer_realloc(&avpkt->buf, avpkt->size + FF_INPUT_BUFFER_PADDING_SIZE);
2131 if (ret >= 0)
2132 avpkt->data = avpkt->buf->data;
2133 }
2134
2135 avctx->frame_number++;
2136 }
2137
2138 if (ret < 0 || !*got_packet_ptr)
2139 av_free_packet(avpkt);
2140 else
2141 av_packet_merge_side_data(avpkt);
2142
2143 emms_c();
2144 return ret;
2145}
2146
2147int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size,
2148 const AVSubtitle *sub)
2149{
2150 int ret;
2151 if (sub->start_display_time) {
2152 av_log(avctx, AV_LOG_ERROR, "start_display_time must be 0.\n");
2153 return -1;
2154 }
2155
2156 ret = avctx->codec->encode_sub(avctx, buf, buf_size, sub);
2157 avctx->frame_number++;
2158 return ret;
2159}
2160
2161/**
2162 * Attempt to guess proper monotonic timestamps for decoded video frames
2163 * which might have incorrect times. Input timestamps may wrap around, in
2164 * which case the output will as well.
2165 *
2166 * @param pts the pts field of the decoded AVPacket, as passed through
2167 * AVFrame.pkt_pts
2168 * @param dts the dts field of the decoded AVPacket
2169 * @return one of the input values, may be AV_NOPTS_VALUE
2170 */
2171static int64_t guess_correct_pts(AVCodecContext *ctx,
2172 int64_t reordered_pts, int64_t dts)
2173{
2174 int64_t pts = AV_NOPTS_VALUE;
2175
2176 if (dts != AV_NOPTS_VALUE) {
2177 ctx->pts_correction_num_faulty_dts += dts <= ctx->pts_correction_last_dts;
2178 ctx->pts_correction_last_dts = dts;
2179 } else if (reordered_pts != AV_NOPTS_VALUE)
2180 ctx->pts_correction_last_dts = reordered_pts;
2181
2182 if (reordered_pts != AV_NOPTS_VALUE) {
2183 ctx->pts_correction_num_faulty_pts += reordered_pts <= ctx->pts_correction_last_pts;
2184 ctx->pts_correction_last_pts = reordered_pts;
2185 } else if(dts != AV_NOPTS_VALUE)
2186 ctx->pts_correction_last_pts = dts;
2187
2188 if ((ctx->pts_correction_num_faulty_pts<=ctx->pts_correction_num_faulty_dts || dts == AV_NOPTS_VALUE)
2189 && reordered_pts != AV_NOPTS_VALUE)
2190 pts = reordered_pts;
2191 else
2192 pts = dts;
2193
2194 return pts;
2195}
2196
2197static int apply_param_change(AVCodecContext *avctx, AVPacket *avpkt)
2198{
2199 int size = 0, ret;
2200 const uint8_t *data;
2201 uint32_t flags;
2202
2203 data = av_packet_get_side_data(avpkt, AV_PKT_DATA_PARAM_CHANGE, &size);
2204 if (!data)
2205 return 0;
2206
2207 if (!(avctx->codec->capabilities & CODEC_CAP_PARAM_CHANGE)) {
2208 av_log(avctx, AV_LOG_ERROR, "This decoder does not support parameter "
2209 "changes, but PARAM_CHANGE side data was sent to it.\n");
2210 return AVERROR(EINVAL);
2211 }
2212
2213 if (size < 4)
2214 goto fail;
2215
2216 flags = bytestream_get_le32(&data);
2217 size -= 4;
2218
2219 if (flags & AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_COUNT) {
2220 if (size < 4)
2221 goto fail;
2222 avctx->channels = bytestream_get_le32(&data);
2223 size -= 4;
2224 }
2225 if (flags & AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_LAYOUT) {
2226 if (size < 8)
2227 goto fail;
2228 avctx->channel_layout = bytestream_get_le64(&data);
2229 size -= 8;
2230 }
2231 if (flags & AV_SIDE_DATA_PARAM_CHANGE_SAMPLE_RATE) {
2232 if (size < 4)
2233 goto fail;
2234 avctx->sample_rate = bytestream_get_le32(&data);
2235 size -= 4;
2236 }
2237 if (flags & AV_SIDE_DATA_PARAM_CHANGE_DIMENSIONS) {
2238 if (size < 8)
2239 goto fail;
2240 avctx->width = bytestream_get_le32(&data);
2241 avctx->height = bytestream_get_le32(&data);
2242 size -= 8;
2243 ret = ff_set_dimensions(avctx, avctx->width, avctx->height);
2244 if (ret < 0)
2245 return ret;
2246 }
2247
2248 return 0;
2249fail:
2250 av_log(avctx, AV_LOG_ERROR, "PARAM_CHANGE side data too small.\n");
2251 return AVERROR_INVALIDDATA;
2252}
2253
2254static int add_metadata_from_side_data(AVCodecContext *avctx, AVFrame *frame)
2255{
2256 int size;
2257 const uint8_t *side_metadata;
2258
2259 AVDictionary **frame_md = avpriv_frame_get_metadatap(frame);
2260
2261 side_metadata = av_packet_get_side_data(avctx->internal->pkt,
2262 AV_PKT_DATA_STRINGS_METADATA, &size);
2263 return av_packet_unpack_dictionary(side_metadata, size, frame_md);
2264}
2265
2266static int unrefcount_frame(AVCodecInternal *avci, AVFrame *frame)
2267{
2268 int ret;
2269
2270 /* move the original frame to our backup */
2271 av_frame_unref(avci->to_free);
2272 av_frame_move_ref(avci->to_free, frame);
2273
2274 /* now copy everything except the AVBufferRefs back
2275 * note that we make a COPY of the side data, so calling av_frame_free() on
2276 * the caller's frame will work properly */
2277 ret = av_frame_copy_props(frame, avci->to_free);
2278 if (ret < 0)
2279 return ret;
2280
2281 memcpy(frame->data, avci->to_free->data, sizeof(frame->data));
2282 memcpy(frame->linesize, avci->to_free->linesize, sizeof(frame->linesize));
2283 if (avci->to_free->extended_data != avci->to_free->data) {
2284 int planes = av_frame_get_channels(avci->to_free);
2285 int size = planes * sizeof(*frame->extended_data);
2286
2287 if (!size) {
2288 av_frame_unref(frame);
2289 return AVERROR_BUG;
2290 }
2291
2292 frame->extended_data = av_malloc(size);
2293 if (!frame->extended_data) {
2294 av_frame_unref(frame);
2295 return AVERROR(ENOMEM);
2296 }
2297 memcpy(frame->extended_data, avci->to_free->extended_data,
2298 size);
2299 } else
2300 frame->extended_data = frame->data;
2301
2302 frame->format = avci->to_free->format;
2303 frame->width = avci->to_free->width;
2304 frame->height = avci->to_free->height;
2305 frame->channel_layout = avci->to_free->channel_layout;
2306 frame->nb_samples = avci->to_free->nb_samples;
2307 av_frame_set_channels(frame, av_frame_get_channels(avci->to_free));
2308
2309 return 0;
2310}
2311
2312int attribute_align_arg avcodec_decode_video2(AVCodecContext *avctx, AVFrame *picture,
2313 int *got_picture_ptr,
2314 const AVPacket *avpkt)
2315{
2316 AVCodecInternal *avci = avctx->internal;
2317 int ret;
2318 // copy to ensure we do not change avpkt
2319 AVPacket tmp = *avpkt;
2320
2321 if (!avctx->codec)
2322 return AVERROR(EINVAL);
2323 if (avctx->codec->type != AVMEDIA_TYPE_VIDEO) {
2324 av_log(avctx, AV_LOG_ERROR, "Invalid media type for video\n");
2325 return AVERROR(EINVAL);
2326 }
2327
2328 *got_picture_ptr = 0;
2329 if ((avctx->coded_width || avctx->coded_height) && av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx))
2330 return AVERROR(EINVAL);
2331
2332 av_frame_unref(picture);
2333
2334 if ((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size || (avctx->active_thread_type & FF_THREAD_FRAME)) {
2335 int did_split = av_packet_split_side_data(&tmp);
2336 ret = apply_param_change(avctx, &tmp);
2337 if (ret < 0) {
2338 av_log(avctx, AV_LOG_ERROR, "Error applying parameter changes.\n");
2339 if (avctx->err_recognition & AV_EF_EXPLODE)
2340 goto fail;
2341 }
2342
2343 avctx->internal->pkt = &tmp;
2344 if (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME)
2345 ret = ff_thread_decode_frame(avctx, picture, got_picture_ptr,
2346 &tmp);
2347 else {
2348 ret = avctx->codec->decode(avctx, picture, got_picture_ptr,
2349 &tmp);
2350 picture->pkt_dts = avpkt->dts;
2351
2352 if(!avctx->has_b_frames){
2353 av_frame_set_pkt_pos(picture, avpkt->pos);
2354 }
2355 //FIXME these should be under if(!avctx->has_b_frames)
2356 /* get_buffer is supposed to set frame parameters */
2357 if (!(avctx->codec->capabilities & CODEC_CAP_DR1)) {
2358 if (!picture->sample_aspect_ratio.num) picture->sample_aspect_ratio = avctx->sample_aspect_ratio;
2359 if (!picture->width) picture->width = avctx->width;
2360 if (!picture->height) picture->height = avctx->height;
2361 if (picture->format == AV_PIX_FMT_NONE) picture->format = avctx->pix_fmt;
2362 }
2363 }
2364 add_metadata_from_side_data(avctx, picture);
2365
2366fail:
2367 emms_c(); //needed to avoid an emms_c() call before every return;
2368
2369 avctx->internal->pkt = NULL;
2370 if (did_split) {
2371 av_packet_free_side_data(&tmp);
2372 if(ret == tmp.size)
2373 ret = avpkt->size;
2374 }
2375
2376 if (*got_picture_ptr) {
2377 if (!avctx->refcounted_frames) {
2378 int err = unrefcount_frame(avci, picture);
2379 if (err < 0)
2380 return err;
2381 }
2382
2383 avctx->frame_number++;
2384 av_frame_set_best_effort_timestamp(picture,
2385 guess_correct_pts(avctx,
2386 picture->pkt_pts,
2387 picture->pkt_dts));
2388 } else
2389 av_frame_unref(picture);
2390 } else
2391 ret = 0;
2392
2393 /* many decoders assign whole AVFrames, thus overwriting extended_data;
2394 * make sure it's set correctly */
2395 av_assert0(!picture->extended_data || picture->extended_data == picture->data);
2396
f6fa7814
DM		 2397#if FF_API_AVCTX_TIMEBASE
2398 if (avctx->framerate.num > 0 && avctx->framerate.den > 0)
2399 avctx->time_base = av_inv_q(av_mul_q(avctx->framerate, (AVRational){avctx->ticks_per_frame, 1}));
2400#endif
2401
2ba45a60
DM		 2402 return ret;
2403}
2404
2405#if FF_API_OLD_DECODE_AUDIO
2406int attribute_align_arg avcodec_decode_audio3(AVCodecContext *avctx, int16_t *samples,
2407 int *frame_size_ptr,
2408 AVPacket *avpkt)
2409{
2410 AVFrame *frame = av_frame_alloc();
2411 int ret, got_frame = 0;
2412
2413 if (!frame)
2414 return AVERROR(ENOMEM);
2415 if (avctx->get_buffer != avcodec_default_get_buffer) {
2416 av_log(avctx, AV_LOG_ERROR, "Custom get_buffer() for use with"
2417 "avcodec_decode_audio3() detected. Overriding with avcodec_default_get_buffer\n");
2418 av_log(avctx, AV_LOG_ERROR, "Please port your application to "
2419 "avcodec_decode_audio4()\n");
2420 avctx->get_buffer = avcodec_default_get_buffer;
2421 avctx->release_buffer = avcodec_default_release_buffer;
2422 }
2423
2424 ret = avcodec_decode_audio4(avctx, frame, &got_frame, avpkt);
2425
2426 if (ret >= 0 && got_frame) {
2427 int ch, plane_size;
2428 int planar = av_sample_fmt_is_planar(avctx->sample_fmt);
2429 int data_size = av_samples_get_buffer_size(&plane_size, avctx->channels,
2430 frame->nb_samples,
2431 avctx->sample_fmt, 1);
2432 if (*frame_size_ptr < data_size) {
2433 av_log(avctx, AV_LOG_ERROR, "output buffer size is too small for "
2434 "the current frame (%d < %d)\n", *frame_size_ptr, data_size);
2435 av_frame_free(&frame);
2436 return AVERROR(EINVAL);
2437 }
2438
2439 memcpy(samples, frame->extended_data[0], plane_size);
2440
2441 if (planar && avctx->channels > 1) {
2442 uint8_t *out = ((uint8_t *)samples) + plane_size;
2443 for (ch = 1; ch < avctx->channels; ch++) {
2444 memcpy(out, frame->extended_data[ch], plane_size);
2445 out += plane_size;
2446 }
2447 }
2448 *frame_size_ptr = data_size;
2449 } else {
2450 *frame_size_ptr = 0;
2451 }
2452 av_frame_free(&frame);
2453 return ret;
2454}
2455
2456#endif
2457
2458int attribute_align_arg avcodec_decode_audio4(AVCodecContext *avctx,
2459 AVFrame *frame,
2460 int *got_frame_ptr,
2461 const AVPacket *avpkt)
2462{
2463 AVCodecInternal *avci = avctx->internal;
2464 int ret = 0;
2465
2466 *got_frame_ptr = 0;
2467
2468 if (!avpkt->data && avpkt->size) {
2469 av_log(avctx, AV_LOG_ERROR, "invalid packet: NULL data, size != 0\n");
2470 return AVERROR(EINVAL);
2471 }
2472 if (!avctx->codec)
2473 return AVERROR(EINVAL);
2474 if (avctx->codec->type != AVMEDIA_TYPE_AUDIO) {
2475 av_log(avctx, AV_LOG_ERROR, "Invalid media type for audio\n");
2476 return AVERROR(EINVAL);
2477 }
2478
2479 av_frame_unref(frame);
2480
2481 if ((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size || (avctx->active_thread_type & FF_THREAD_FRAME)) {
2482 uint8_t *side;
2483 int side_size;
2484 uint32_t discard_padding = 0;
f6fa7814
DM		 2485 uint8_t skip_reason = 0;
2486 uint8_t discard_reason = 0;
2ba45a60
DM		 2487 // copy to ensure we do not change avpkt
2488 AVPacket tmp = *avpkt;
2489 int did_split = av_packet_split_side_data(&tmp);
2490 ret = apply_param_change(avctx, &tmp);
2491 if (ret < 0) {
2492 av_log(avctx, AV_LOG_ERROR, "Error applying parameter changes.\n");
2493 if (avctx->err_recognition & AV_EF_EXPLODE)
2494 goto fail;
2495 }
2496
2497 avctx->internal->pkt = &tmp;
2498 if (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME)
2499 ret = ff_thread_decode_frame(avctx, frame, got_frame_ptr, &tmp);
2500 else {
2501 ret = avctx->codec->decode(avctx, frame, got_frame_ptr, &tmp);
2502 frame->pkt_dts = avpkt->dts;
2503 }
2504 if (ret >= 0 && *got_frame_ptr) {
2505 add_metadata_from_side_data(avctx, frame);
2506 avctx->frame_number++;
2507 av_frame_set_best_effort_timestamp(frame,
2508 guess_correct_pts(avctx,
2509 frame->pkt_pts,
2510 frame->pkt_dts));
2511 if (frame->format == AV_SAMPLE_FMT_NONE)
2512 frame->format = avctx->sample_fmt;
2513 if (!frame->channel_layout)
2514 frame->channel_layout = avctx->channel_layout;
2515 if (!av_frame_get_channels(frame))
2516 av_frame_set_channels(frame, avctx->channels);
2517 if (!frame->sample_rate)
2518 frame->sample_rate = avctx->sample_rate;
2519 }
2520
2521 side= av_packet_get_side_data(avctx->internal->pkt, AV_PKT_DATA_SKIP_SAMPLES, &side_size);
2522 if(side && side_size>=10) {
2523 avctx->internal->skip_samples = AV_RL32(side);
2524 av_log(avctx, AV_LOG_DEBUG, "skip %d samples due to side data\n",
2525 avctx->internal->skip_samples);
2526 discard_padding = AV_RL32(side + 4);
f6fa7814
DM		 2527 skip_reason = AV_RL8(side + 8);
2528 discard_reason = AV_RL8(side + 9);
2ba45a60 2529 }
f6fa7814
DM		 2530 if (avctx->internal->skip_samples && *got_frame_ptr &&
2531 !(avctx->flags2 & CODEC_FLAG2_SKIP_MANUAL)) {
2ba45a60
DM		 2532 if(frame->nb_samples <= avctx->internal->skip_samples){
2533 *got_frame_ptr = 0;
2534 avctx->internal->skip_samples -= frame->nb_samples;
2535 av_log(avctx, AV_LOG_DEBUG, "skip whole frame, skip left: %d\n",
2536 avctx->internal->skip_samples);
2537 } else {
2538 av_samples_copy(frame->extended_data, frame->extended_data, 0, avctx->internal->skip_samples,
2539 frame->nb_samples - avctx->internal->skip_samples, avctx->channels, frame->format);
2540 if(avctx->pkt_timebase.num && avctx->sample_rate) {
2541 int64_t diff_ts = av_rescale_q(avctx->internal->skip_samples,
2542 (AVRational){1, avctx->sample_rate},
2543 avctx->pkt_timebase);
2544 if(frame->pkt_pts!=AV_NOPTS_VALUE)
2545 frame->pkt_pts += diff_ts;
2546 if(frame->pkt_dts!=AV_NOPTS_VALUE)
2547 frame->pkt_dts += diff_ts;
2548 if (av_frame_get_pkt_duration(frame) >= diff_ts)
2549 av_frame_set_pkt_duration(frame, av_frame_get_pkt_duration(frame) - diff_ts);
2550 } else {
2551 av_log(avctx, AV_LOG_WARNING, "Could not update timestamps for skipped samples.\n");
2552 }
2553 av_log(avctx, AV_LOG_DEBUG, "skip %d/%d samples\n",
2554 avctx->internal->skip_samples, frame->nb_samples);
2555 frame->nb_samples -= avctx->internal->skip_samples;
2556 avctx->internal->skip_samples = 0;
2557 }
2558 }
2559
f6fa7814
DM		 2560 if (discard_padding > 0 && discard_padding <= frame->nb_samples && *got_frame_ptr &&
2561 !(avctx->flags2 & CODEC_FLAG2_SKIP_MANUAL)) {
2ba45a60
DM		 2562 if (discard_padding == frame->nb_samples) {
2563 *got_frame_ptr = 0;
2564 } else {
2565 if(avctx->pkt_timebase.num && avctx->sample_rate) {
2566 int64_t diff_ts = av_rescale_q(frame->nb_samples - discard_padding,
2567 (AVRational){1, avctx->sample_rate},
2568 avctx->pkt_timebase);
2569 if (av_frame_get_pkt_duration(frame) >= diff_ts)
2570 av_frame_set_pkt_duration(frame, av_frame_get_pkt_duration(frame) - diff_ts);
2571 } else {
2572 av_log(avctx, AV_LOG_WARNING, "Could not update timestamps for discarded samples.\n");
2573 }
2574 av_log(avctx, AV_LOG_DEBUG, "discard %d/%d samples\n",
2575 discard_padding, frame->nb_samples);
2576 frame->nb_samples -= discard_padding;
2577 }
2578 }
f6fa7814
DM		 2579
2580 if ((avctx->flags2 & CODEC_FLAG2_SKIP_MANUAL) && *got_frame_ptr) {
2581 AVFrameSideData *fside = av_frame_new_side_data(frame, AV_FRAME_DATA_SKIP_SAMPLES, 10);
2582 if (fside) {
2583 AV_WL32(fside->data, avctx->internal->skip_samples);
2584 AV_WL32(fside->data + 4, discard_padding);
2585 AV_WL8(fside->data + 8, skip_reason);
2586 AV_WL8(fside->data + 9, discard_reason);
2587 avctx->internal->skip_samples = 0;
2588 }
2589 }
2ba45a60
DM		 2590fail:
2591 avctx->internal->pkt = NULL;
2592 if (did_split) {
2593 av_packet_free_side_data(&tmp);
2594 if(ret == tmp.size)
2595 ret = avpkt->size;
2596 }
2597
2598 if (ret >= 0 && *got_frame_ptr) {
2599 if (!avctx->refcounted_frames) {
2600 int err = unrefcount_frame(avci, frame);
2601 if (err < 0)
2602 return err;
2603 }
2604 } else
2605 av_frame_unref(frame);
2606 }
2607
2608 return ret;
2609}
2610
2611#define UTF8_MAX_BYTES 4 /* 5 and 6 bytes sequences should not be used */
2612static int recode_subtitle(AVCodecContext *avctx,
2613 AVPacket *outpkt, const AVPacket *inpkt)
2614{
2615#if CONFIG_ICONV
2616 iconv_t cd = (iconv_t)-1;
2617 int ret = 0;
2618 char *inb, *outb;
2619 size_t inl, outl;
2620 AVPacket tmp;
2621#endif
2622
2623 if (avctx->sub_charenc_mode != FF_SUB_CHARENC_MODE_PRE_DECODER || inpkt->size == 0)
2624 return 0;
2625
2626#if CONFIG_ICONV
2627 cd = iconv_open("UTF-8", avctx->sub_charenc);
2628 av_assert0(cd != (iconv_t)-1);
2629
2630 inb = inpkt->data;
2631 inl = inpkt->size;
2632
2633 if (inl >= INT_MAX / UTF8_MAX_BYTES - FF_INPUT_BUFFER_PADDING_SIZE) {
2634 av_log(avctx, AV_LOG_ERROR, "Subtitles packet is too big for recoding\n");
2635 ret = AVERROR(ENOMEM);
2636 goto end;
2637 }
2638
2639 ret = av_new_packet(&tmp, inl * UTF8_MAX_BYTES);
2640 if (ret < 0)
2641 goto end;
2642 outpkt->buf = tmp.buf;
2643 outpkt->data = tmp.data;
2644 outpkt->size = tmp.size;
2645 outb = outpkt->data;
2646 outl = outpkt->size;
2647
2648 if (iconv(cd, &inb, &inl, &outb, &outl) == (size_t)-1 ||
2649 iconv(cd, NULL, NULL, &outb, &outl) == (size_t)-1 ||
2650 outl >= outpkt->size || inl != 0) {
f6fa7814 2651 ret = FFMIN(AVERROR(errno), -1);
2ba45a60
DM		 2652 av_log(avctx, AV_LOG_ERROR, "Unable to recode subtitle event \"%s\" "
2653 "from %s to UTF-8\n", inpkt->data, avctx->sub_charenc);
2654 av_free_packet(&tmp);
2ba45a60
DM		 2655 goto end;
2656 }
2657 outpkt->size -= outl;
2658 memset(outpkt->data + outpkt->size, 0, outl);
2659
2660end:
2661 if (cd != (iconv_t)-1)
2662 iconv_close(cd);
2663 return ret;
2664#else
2665 av_log(avctx, AV_LOG_ERROR, "requesting subtitles recoding without iconv");
2666 return AVERROR(EINVAL);
2667#endif
2668}
2669
2670static int utf8_check(const uint8_t *str)
2671{
2672 const uint8_t *byte;
2673 uint32_t codepoint, min;
2674
2675 while (*str) {
2676 byte = str;
2677 GET_UTF8(codepoint, *(byte++), return 0;);
2678 min = byte - str == 1 ? 0 : byte - str == 2 ? 0x80 :
2679 1 << (5 * (byte - str) - 4);
2680 if (codepoint < min || codepoint >= 0x110000 ||
2681 codepoint == 0xFFFE /* BOM */ ||
2682 codepoint >= 0xD800 && codepoint <= 0xDFFF /* surrogates */)
2683 return 0;
2684 str = byte;
2685 }
2686 return 1;
2687}
2688
2689int avcodec_decode_subtitle2(AVCodecContext *avctx, AVSubtitle *sub,
2690 int *got_sub_ptr,
2691 AVPacket *avpkt)
2692{
2693 int i, ret = 0;
2694
2695 if (!avpkt->data && avpkt->size) {
2696 av_log(avctx, AV_LOG_ERROR, "invalid packet: NULL data, size != 0\n");
2697 return AVERROR(EINVAL);
2698 }
2699 if (!avctx->codec)
2700 return AVERROR(EINVAL);
2701 if (avctx->codec->type != AVMEDIA_TYPE_SUBTITLE) {
2702 av_log(avctx, AV_LOG_ERROR, "Invalid media type for subtitles\n");
2703 return AVERROR(EINVAL);
2704 }
2705
2706 *got_sub_ptr = 0;
f6fa7814 2707 get_subtitle_defaults(sub);
2ba45a60
DM		 2708
2709 if ((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size) {
2710 AVPacket pkt_recoded;
2711 AVPacket tmp = *avpkt;
2712 int did_split = av_packet_split_side_data(&tmp);
2713 //apply_param_change(avctx, &tmp);
2714
2715 if (did_split) {
2716 /* FFMIN() prevents overflow in case the packet wasn't allocated with
2717 * proper padding.
2718 * If the side data is smaller than the buffer padding size, the
2719 * remaining bytes should have already been filled with zeros by the
2720 * original packet allocation anyway. */
2721 memset(tmp.data + tmp.size, 0,
2722 FFMIN(avpkt->size - tmp.size, FF_INPUT_BUFFER_PADDING_SIZE));
2723 }
2724
2725 pkt_recoded = tmp;
2726 ret = recode_subtitle(avctx, &pkt_recoded, &tmp);
2727 if (ret < 0) {
2728 *got_sub_ptr = 0;
2729 } else {
2730 avctx->internal->pkt = &pkt_recoded;
2731
2732 if (avctx->pkt_timebase.den && avpkt->pts != AV_NOPTS_VALUE)
2733 sub->pts = av_rescale_q(avpkt->pts,
2734 avctx->pkt_timebase, AV_TIME_BASE_Q);
2735 ret = avctx->codec->decode(avctx, sub, got_sub_ptr, &pkt_recoded);
2736 av_assert1((ret >= 0) >= !!*got_sub_ptr &&
2737 !!*got_sub_ptr >= !!sub->num_rects);
2738
2739 if (sub->num_rects && !sub->end_display_time && avpkt->duration &&
2740 avctx->pkt_timebase.num) {
2741 AVRational ms = { 1, 1000 };
2742 sub->end_display_time = av_rescale_q(avpkt->duration,
2743 avctx->pkt_timebase, ms);
2744 }
2745
2746 for (i = 0; i < sub->num_rects; i++) {
2747 if (sub->rects[i]->ass && !utf8_check(sub->rects[i]->ass)) {
2748 av_log(avctx, AV_LOG_ERROR,
2749 "Invalid UTF-8 in decoded subtitles text; "
2750 "maybe missing -sub_charenc option\n");
2751 avsubtitle_free(sub);
2752 return AVERROR_INVALIDDATA;
2753 }
2754 }
2755
2756 if (tmp.data != pkt_recoded.data) { // did we recode?
2757 /* prevent from destroying side data from original packet */
2758 pkt_recoded.side_data = NULL;
2759 pkt_recoded.side_data_elems = 0;
2760
2761 av_free_packet(&pkt_recoded);
2762 }
2763 if (avctx->codec_descriptor->props & AV_CODEC_PROP_BITMAP_SUB)
2764 sub->format = 0;
2765 else if (avctx->codec_descriptor->props & AV_CODEC_PROP_TEXT_SUB)
2766 sub->format = 1;
2767 avctx->internal->pkt = NULL;
2768 }
2769
2770 if (did_split) {
2771 av_packet_free_side_data(&tmp);
2772 if(ret == tmp.size)
2773 ret = avpkt->size;
2774 }
2775
2776 if (*got_sub_ptr)
2777 avctx->frame_number++;
2778 }
2779
2780 return ret;
2781}
2782
2783void avsubtitle_free(AVSubtitle *sub)
2784{
2785 int i;
2786
2787 for (i = 0; i < sub->num_rects; i++) {
2788 av_freep(&sub->rects[i]->pict.data[0]);
2789 av_freep(&sub->rects[i]->pict.data[1]);
2790 av_freep(&sub->rects[i]->pict.data[2]);
2791 av_freep(&sub->rects[i]->pict.data[3]);
2792 av_freep(&sub->rects[i]->text);
2793 av_freep(&sub->rects[i]->ass);
2794 av_freep(&sub->rects[i]);
2795 }
2796
2797 av_freep(&sub->rects);
2798
2799 memset(sub, 0, sizeof(AVSubtitle));
2800}
2801
2802av_cold int avcodec_close(AVCodecContext *avctx)
2803{
2804 if (!avctx)
2805 return 0;
2806
2807 if (avcodec_is_open(avctx)) {
2808 FramePool *pool = avctx->internal->pool;
2809 int i;
2810 if (CONFIG_FRAME_THREAD_ENCODER &&
2811 avctx->internal->frame_thread_encoder && avctx->thread_count > 1) {
2812 ff_frame_thread_encoder_free(avctx);
2813 }
2814 if (HAVE_THREADS && avctx->internal->thread_ctx)
2815 ff_thread_free(avctx);
2816 if (avctx->codec && avctx->codec->close)
2817 avctx->codec->close(avctx);
2818 avctx->coded_frame = NULL;
2819 avctx->internal->byte_buffer_size = 0;
2820 av_freep(&avctx->internal->byte_buffer);
2821 av_frame_free(&avctx->internal->to_free);
2822 for (i = 0; i < FF_ARRAY_ELEMS(pool->pools); i++)
2823 av_buffer_pool_uninit(&pool->pools[i]);
2824 av_freep(&avctx->internal->pool);
2825
2826 if (avctx->hwaccel && avctx->hwaccel->uninit)
2827 avctx->hwaccel->uninit(avctx);
2828 av_freep(&avctx->internal->hwaccel_priv_data);
2829
2830 av_freep(&avctx->internal);
2831 }
2832
2833 if (avctx->priv_data && avctx->codec && avctx->codec->priv_class)
2834 av_opt_free(avctx->priv_data);
2835 av_opt_free(avctx);
2836 av_freep(&avctx->priv_data);
2837 if (av_codec_is_encoder(avctx->codec))
2838 av_freep(&avctx->extradata);
2839 avctx->codec = NULL;
2840 avctx->active_thread_type = 0;
2841
2842 return 0;
2843}
2844
2845static enum AVCodecID remap_deprecated_codec_id(enum AVCodecID id)
2846{
2847 switch(id){
2848 //This is for future deprecatec codec ids, its empty since
2849 //last major bump but will fill up again over time, please don't remove it
2850// case AV_CODEC_ID_UTVIDEO_DEPRECATED: return AV_CODEC_ID_UTVIDEO;
2851 case AV_CODEC_ID_BRENDER_PIX_DEPRECATED : return AV_CODEC_ID_BRENDER_PIX;
2852 case AV_CODEC_ID_OPUS_DEPRECATED : return AV_CODEC_ID_OPUS;
2853 case AV_CODEC_ID_TAK_DEPRECATED : return AV_CODEC_ID_TAK;
2854 case AV_CODEC_ID_PAF_AUDIO_DEPRECATED : return AV_CODEC_ID_PAF_AUDIO;
2855 case AV_CODEC_ID_PCM_S24LE_PLANAR_DEPRECATED : return AV_CODEC_ID_PCM_S24LE_PLANAR;
2856 case AV_CODEC_ID_PCM_S32LE_PLANAR_DEPRECATED : return AV_CODEC_ID_PCM_S32LE_PLANAR;
2857 case AV_CODEC_ID_ADPCM_VIMA_DEPRECATED : return AV_CODEC_ID_ADPCM_VIMA;
2858 case AV_CODEC_ID_ESCAPE130_DEPRECATED : return AV_CODEC_ID_ESCAPE130;
2859 case AV_CODEC_ID_EXR_DEPRECATED : return AV_CODEC_ID_EXR;
2860 case AV_CODEC_ID_G2M_DEPRECATED : return AV_CODEC_ID_G2M;
2861 case AV_CODEC_ID_PAF_VIDEO_DEPRECATED : return AV_CODEC_ID_PAF_VIDEO;
2862 case AV_CODEC_ID_WEBP_DEPRECATED : return AV_CODEC_ID_WEBP;
2863 case AV_CODEC_ID_HEVC_DEPRECATED : return AV_CODEC_ID_HEVC;
2864 case AV_CODEC_ID_MVC1_DEPRECATED : return AV_CODEC_ID_MVC1;
2865 case AV_CODEC_ID_MVC2_DEPRECATED : return AV_CODEC_ID_MVC2;
2866 case AV_CODEC_ID_SANM_DEPRECATED : return AV_CODEC_ID_SANM;
2867 case AV_CODEC_ID_SGIRLE_DEPRECATED : return AV_CODEC_ID_SGIRLE;
2868 case AV_CODEC_ID_VP7_DEPRECATED : return AV_CODEC_ID_VP7;
2869 default : return id;
2870 }
2871}
2872
2873static AVCodec *find_encdec(enum AVCodecID id, int encoder)
2874{
2875 AVCodec *p, *experimental = NULL;
2876 p = first_avcodec;
2877 id= remap_deprecated_codec_id(id);
2878 while (p) {
2879 if ((encoder ? av_codec_is_encoder(p) : av_codec_is_decoder(p)) &&
2880 p->id == id) {
2881 if (p->capabilities & CODEC_CAP_EXPERIMENTAL && !experimental) {
2882 experimental = p;
2883 } else
2884 return p;
2885 }
2886 p = p->next;
2887 }
2888 return experimental;
2889}
2890
2891AVCodec *avcodec_find_encoder(enum AVCodecID id)
2892{
2893 return find_encdec(id, 1);
2894}
2895
2896AVCodec *avcodec_find_encoder_by_name(const char *name)
2897{
2898 AVCodec *p;
2899 if (!name)
2900 return NULL;
2901 p = first_avcodec;
2902 while (p) {
2903 if (av_codec_is_encoder(p) && strcmp(name, p->name) == 0)
2904 return p;
2905 p = p->next;
2906 }
2907 return NULL;
2908}
2909
2910AVCodec *avcodec_find_decoder(enum AVCodecID id)
2911{
2912 return find_encdec(id, 0);
2913}
2914
2915AVCodec *avcodec_find_decoder_by_name(const char *name)
2916{
2917 AVCodec *p;
2918 if (!name)
2919 return NULL;
2920 p = first_avcodec;
2921 while (p) {
2922 if (av_codec_is_decoder(p) && strcmp(name, p->name) == 0)
2923 return p;
2924 p = p->next;
2925 }
2926 return NULL;
2927}
2928
2929const char *avcodec_get_name(enum AVCodecID id)
2930{
2931 const AVCodecDescriptor *cd;
2932 AVCodec *codec;
2933
2934 if (id == AV_CODEC_ID_NONE)
2935 return "none";
2936 cd = avcodec_descriptor_get(id);
2937 if (cd)
2938 return cd->name;
2939 av_log(NULL, AV_LOG_WARNING, "Codec 0x%x is not in the full list.\n", id);
2940 codec = avcodec_find_decoder(id);
2941 if (codec)
2942 return codec->name;
2943 codec = avcodec_find_encoder(id);
2944 if (codec)
2945 return codec->name;
2946 return "unknown_codec";
2947}
2948
2949size_t av_get_codec_tag_string(char *buf, size_t buf_size, unsigned int codec_tag)
2950{
2951 int i, len, ret = 0;
2952
2953#define TAG_PRINT(x) \
2954 (((x) >= '0' && (x) <= '9') || \
2955 ((x) >= 'a' && (x) <= 'z') || ((x) >= 'A' && (x) <= 'Z') || \
2956 ((x) == '.' || (x) == ' ' || (x) == '-' || (x) == '_'))
2957
2958 for (i = 0; i < 4; i++) {
2959 len = snprintf(buf, buf_size,
2960 TAG_PRINT(codec_tag & 0xFF) ? "%c" : "[%d]", codec_tag & 0xFF);
2961 buf += len;
2962 buf_size = buf_size > len ? buf_size - len : 0;
2963 ret += len;
2964 codec_tag >>= 8;
2965 }
2966 return ret;
2967}
2968
2969void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)
2970{
2971 const char *codec_type;
2972 const char *codec_name;
2973 const char *profile = NULL;
2974 const AVCodec *p;
2975 int bitrate;
f6fa7814 2976 int new_line = 0;
2ba45a60 2977 AVRational display_aspect_ratio;
f6fa7814 2978 const char *separator = enc->dump_separator ? (const char *)enc->dump_separator : ", ";
2ba45a60
DM		 2979
2980 if (!buf || buf_size <= 0)
2981 return;
2982 codec_type = av_get_media_type_string(enc->codec_type);
2983 codec_name = avcodec_get_name(enc->codec_id);
2984 if (enc->profile != FF_PROFILE_UNKNOWN) {
2985 if (enc->codec)
2986 p = enc->codec;
2987 else
2988 p = encode ? avcodec_find_encoder(enc->codec_id) :
2989 avcodec_find_decoder(enc->codec_id);
2990 if (p)
2991 profile = av_get_profile_name(p, enc->profile);
2992 }
2993
2994 snprintf(buf, buf_size, "%s: %s", codec_type ? codec_type : "unknown",
2995 codec_name);
2996 buf[0] ^= 'a' ^ 'A'; /* first letter in uppercase */
2997
2998 if (enc->codec && strcmp(enc->codec->name, codec_name))
2999 snprintf(buf + strlen(buf), buf_size - strlen(buf), " (%s)", enc->codec->name);
3000
3001 if (profile)
3002 snprintf(buf + strlen(buf), buf_size - strlen(buf), " (%s)", profile);
f6fa7814 3003
2ba45a60
DM		 3004 if (enc->codec_tag) {
3005 char tag_buf[32];
3006 av_get_codec_tag_string(tag_buf, sizeof(tag_buf), enc->codec_tag);
3007 snprintf(buf + strlen(buf), buf_size - strlen(buf),
3008 " (%s / 0x%04X)", tag_buf, enc->codec_tag);
3009 }
3010
3011 switch (enc->codec_type) {
3012 case AVMEDIA_TYPE_VIDEO:
f6fa7814 3013 {
2ba45a60 3014 char detail[256] = "(";
f6fa7814
DM		 3015
3016 av_strlcat(buf, separator, buf_size);
3017
2ba45a60 3018 snprintf(buf + strlen(buf), buf_size - strlen(buf),
f6fa7814 3019 "%s", enc->pix_fmt == AV_PIX_FMT_NONE ? "none" :
2ba45a60 3020 av_get_pix_fmt_name(enc->pix_fmt));
f6fa7814 3021 if (enc->bits_per_raw_sample && enc->pix_fmt != AV_PIX_FMT_NONE &&
2ba45a60
DM		 3022 enc->bits_per_raw_sample <= av_pix_fmt_desc_get(enc->pix_fmt)->comp[0].depth_minus1)
3023 av_strlcatf(detail, sizeof(detail), "%d bpc, ", enc->bits_per_raw_sample);
3024 if (enc->color_range != AVCOL_RANGE_UNSPECIFIED)
f6fa7814
DM		 3025 av_strlcatf(detail, sizeof(detail), "%s, ",
3026 av_color_range_name(enc->color_range));
3027
3028 if (enc->colorspace != AVCOL_SPC_UNSPECIFIED ||
3029 enc->color_primaries != AVCOL_PRI_UNSPECIFIED ||
3030 enc->color_trc != AVCOL_TRC_UNSPECIFIED) {
3031 if (enc->colorspace != (int)enc->color_primaries ||
3032 enc->colorspace != (int)enc->color_trc) {
3033 new_line = 1;
3034 av_strlcatf(detail, sizeof(detail), "%s/%s/%s, ",
3035 av_color_space_name(enc->colorspace),
3036 av_color_primaries_name(enc->color_primaries),
3037 av_color_transfer_name(enc->color_trc));
3038 } else
3039 av_strlcatf(detail, sizeof(detail), "%s, ",
3040 av_get_colorspace_name(enc->colorspace));
3041 }
2ba45a60 3042
f6fa7814
DM		 3043 if (av_log_get_level() >= AV_LOG_DEBUG &&
3044 enc->chroma_sample_location != AVCHROMA_LOC_UNSPECIFIED)
3045 av_strlcatf(detail, sizeof(detail), "%s, ",
3046 av_chroma_location_name(enc->chroma_sample_location));
2ba45a60
DM		 3047
3048 if (strlen(detail) > 1) {
3049 detail[strlen(detail) - 2] = 0;
3050 av_strlcatf(buf, buf_size, "%s)", detail);
3051 }
3052 }
f6fa7814 3053
2ba45a60 3054 if (enc->width) {
f6fa7814
DM		 3055 av_strlcat(buf, new_line ? separator : ", ", buf_size);
3056
2ba45a60 3057 snprintf(buf + strlen(buf), buf_size - strlen(buf),
f6fa7814 3058 "%dx%d",
2ba45a60 3059 enc->width, enc->height);
f6fa7814
DM		 3060
3061 if (av_log_get_level() >= AV_LOG_VERBOSE &&
3062 (enc->width != enc->coded_width ||
3063 enc->height != enc->coded_height))
3064 snprintf(buf + strlen(buf), buf_size - strlen(buf),
3065 " (%dx%d)", enc->coded_width, enc->coded_height);
3066
2ba45a60
DM		 3067 if (enc->sample_aspect_ratio.num) {
3068 av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
3069 enc->width * enc->sample_aspect_ratio.num,
3070 enc->height * enc->sample_aspect_ratio.den,
3071 1024 * 1024);
3072 snprintf(buf + strlen(buf), buf_size - strlen(buf),
3073 " [SAR %d:%d DAR %d:%d]",
3074 enc->sample_aspect_ratio.num, enc->sample_aspect_ratio.den,
3075 display_aspect_ratio.num, display_aspect_ratio.den);
3076 }
3077 if (av_log_get_level() >= AV_LOG_DEBUG) {
3078 int g = av_gcd(enc->time_base.num, enc->time_base.den);
3079 snprintf(buf + strlen(buf), buf_size - strlen(buf),
3080 ", %d/%d",
3081 enc->time_base.num / g, enc->time_base.den / g);
3082 }
3083 }
3084 if (encode) {
3085 snprintf(buf + strlen(buf), buf_size - strlen(buf),
3086 ", q=%d-%d", enc->qmin, enc->qmax);
3087 }
3088 break;
3089 case AVMEDIA_TYPE_AUDIO:
f6fa7814
DM		 3090 av_strlcat(buf, separator, buf_size);
3091
2ba45a60
DM		 3092 if (enc->sample_rate) {
3093 snprintf(buf + strlen(buf), buf_size - strlen(buf),
f6fa7814 3094 "%d Hz, ", enc->sample_rate);
2ba45a60 3095 }
2ba45a60
DM		 3096 av_get_channel_layout_string(buf + strlen(buf), buf_size - strlen(buf), enc->channels, enc->channel_layout);
3097 if (enc->sample_fmt != AV_SAMPLE_FMT_NONE) {
3098 snprintf(buf + strlen(buf), buf_size - strlen(buf),
3099 ", %s", av_get_sample_fmt_name(enc->sample_fmt));
3100 }
3101 if ( enc->bits_per_raw_sample > 0
3102 && enc->bits_per_raw_sample != av_get_bytes_per_sample(enc->sample_fmt) * 8)
3103 snprintf(buf + strlen(buf), buf_size - strlen(buf),
3104 " (%d bit)", enc->bits_per_raw_sample);
3105 break;
3106 case AVMEDIA_TYPE_DATA:
3107 if (av_log_get_level() >= AV_LOG_DEBUG) {
3108 int g = av_gcd(enc->time_base.num, enc->time_base.den);
3109 if (g)
3110 snprintf(buf + strlen(buf), buf_size - strlen(buf),
3111 ", %d/%d",
3112 enc->time_base.num / g, enc->time_base.den / g);
3113 }
3114 break;
3115 case AVMEDIA_TYPE_SUBTITLE:
3116 if (enc->width)
3117 snprintf(buf + strlen(buf), buf_size - strlen(buf),
3118 ", %dx%d", enc->width, enc->height);
3119 break;
3120 default:
3121 return;
3122 }
3123 if (encode) {
3124 if (enc->flags & CODEC_FLAG_PASS1)
3125 snprintf(buf + strlen(buf), buf_size - strlen(buf),
3126 ", pass 1");
3127 if (enc->flags & CODEC_FLAG_PASS2)
3128 snprintf(buf + strlen(buf), buf_size - strlen(buf),
3129 ", pass 2");
3130 }
3131 bitrate = get_bit_rate(enc);
3132 if (bitrate != 0) {
3133 snprintf(buf + strlen(buf), buf_size - strlen(buf),
3134 ", %d kb/s", bitrate / 1000);
3135 } else if (enc->rc_max_rate > 0) {
3136 snprintf(buf + strlen(buf), buf_size - strlen(buf),
3137 ", max. %d kb/s", enc->rc_max_rate / 1000);
3138 }
3139}
3140
3141const char *av_get_profile_name(const AVCodec *codec, int profile)
3142{
3143 const AVProfile *p;
3144 if (profile == FF_PROFILE_UNKNOWN || !codec->profiles)
3145 return NULL;
3146
3147 for (p = codec->profiles; p->profile != FF_PROFILE_UNKNOWN; p++)
3148 if (p->profile == profile)
3149 return p->name;
3150
3151 return NULL;
3152}
3153
3154unsigned avcodec_version(void)
3155{
3156// av_assert0(AV_CODEC_ID_V410==164);
3157 av_assert0(AV_CODEC_ID_PCM_S8_PLANAR==65563);
3158 av_assert0(AV_CODEC_ID_ADPCM_G722==69660);
3159// av_assert0(AV_CODEC_ID_BMV_AUDIO==86071);
3160 av_assert0(AV_CODEC_ID_SRT==94216);
3161 av_assert0(LIBAVCODEC_VERSION_MICRO >= 100);
3162
3163 av_assert0(CODEC_ID_CLLC == AV_CODEC_ID_CLLC);
3164 av_assert0(CODEC_ID_PCM_S8_PLANAR == AV_CODEC_ID_PCM_S8_PLANAR);
3165 av_assert0(CODEC_ID_ADPCM_IMA_APC == AV_CODEC_ID_ADPCM_IMA_APC);
3166 av_assert0(CODEC_ID_ILBC == AV_CODEC_ID_ILBC);
3167 av_assert0(CODEC_ID_SRT == AV_CODEC_ID_SRT);
3168 return LIBAVCODEC_VERSION_INT;
3169}
3170
3171const char *avcodec_configuration(void)
3172{
3173 return FFMPEG_CONFIGURATION;
3174}
3175
3176const char *avcodec_license(void)
3177{
3178#define LICENSE_PREFIX "libavcodec license: "
3179 return LICENSE_PREFIX FFMPEG_LICENSE + sizeof(LICENSE_PREFIX) - 1;
3180}
3181
3182void avcodec_flush_buffers(AVCodecContext *avctx)
3183{
3184 if (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME)
3185 ff_thread_flush(avctx);
3186 else if (avctx->codec->flush)
3187 avctx->codec->flush(avctx);
3188
3189 avctx->pts_correction_last_pts =
3190 avctx->pts_correction_last_dts = INT64_MIN;
3191
3192 if (!avctx->refcounted_frames)
3193 av_frame_unref(avctx->internal->to_free);
3194}
3195
3196int av_get_exact_bits_per_sample(enum AVCodecID codec_id)
3197{
3198 switch (codec_id) {
3199 case AV_CODEC_ID_8SVX_EXP:
3200 case AV_CODEC_ID_8SVX_FIB:
3201 case AV_CODEC_ID_ADPCM_CT:
3202 case AV_CODEC_ID_ADPCM_IMA_APC:
3203 case AV_CODEC_ID_ADPCM_IMA_EA_SEAD:
3204 case AV_CODEC_ID_ADPCM_IMA_OKI:
3205 case AV_CODEC_ID_ADPCM_IMA_WS:
3206 case AV_CODEC_ID_ADPCM_G722:
3207 case AV_CODEC_ID_ADPCM_YAMAHA:
3208 return 4;
3209 case AV_CODEC_ID_DSD_LSBF:
3210 case AV_CODEC_ID_DSD_MSBF:
3211 case AV_CODEC_ID_DSD_LSBF_PLANAR:
3212 case AV_CODEC_ID_DSD_MSBF_PLANAR:
3213 case AV_CODEC_ID_PCM_ALAW:
3214 case AV_CODEC_ID_PCM_MULAW:
3215 case AV_CODEC_ID_PCM_S8:
3216 case AV_CODEC_ID_PCM_S8_PLANAR:
3217 case AV_CODEC_ID_PCM_U8:
3218 case AV_CODEC_ID_PCM_ZORK:
3219 return 8;
3220 case AV_CODEC_ID_PCM_S16BE:
3221 case AV_CODEC_ID_PCM_S16BE_PLANAR:
3222 case AV_CODEC_ID_PCM_S16LE:
3223 case AV_CODEC_ID_PCM_S16LE_PLANAR:
3224 case AV_CODEC_ID_PCM_U16BE:
3225 case AV_CODEC_ID_PCM_U16LE:
3226 return 16;
3227 case AV_CODEC_ID_PCM_S24DAUD:
3228 case AV_CODEC_ID_PCM_S24BE:
3229 case AV_CODEC_ID_PCM_S24LE:
3230 case AV_CODEC_ID_PCM_S24LE_PLANAR:
3231 case AV_CODEC_ID_PCM_U24BE:
3232 case AV_CODEC_ID_PCM_U24LE:
3233 return 24;
3234 case AV_CODEC_ID_PCM_S32BE:
3235 case AV_CODEC_ID_PCM_S32LE:
3236 case AV_CODEC_ID_PCM_S32LE_PLANAR:
3237 case AV_CODEC_ID_PCM_U32BE:
3238 case AV_CODEC_ID_PCM_U32LE:
3239 case AV_CODEC_ID_PCM_F32BE:
3240 case AV_CODEC_ID_PCM_F32LE:
3241 return 32;
3242 case AV_CODEC_ID_PCM_F64BE:
3243 case AV_CODEC_ID_PCM_F64LE:
3244 return 64;
3245 default:
3246 return 0;
3247 }
3248}
3249
3250enum AVCodecID av_get_pcm_codec(enum AVSampleFormat fmt, int be)
3251{
3252 static const enum AVCodecID map[AV_SAMPLE_FMT_NB][2] = {
3253 [AV_SAMPLE_FMT_U8 ] = { AV_CODEC_ID_PCM_U8, AV_CODEC_ID_PCM_U8 },
3254 [AV_SAMPLE_FMT_S16 ] = { AV_CODEC_ID_PCM_S16LE, AV_CODEC_ID_PCM_S16BE },
3255 [AV_SAMPLE_FMT_S32 ] = { AV_CODEC_ID_PCM_S32LE, AV_CODEC_ID_PCM_S32BE },
3256 [AV_SAMPLE_FMT_FLT ] = { AV_CODEC_ID_PCM_F32LE, AV_CODEC_ID_PCM_F32BE },
3257 [AV_SAMPLE_FMT_DBL ] = { AV_CODEC_ID_PCM_F64LE, AV_CODEC_ID_PCM_F64BE },
3258 [AV_SAMPLE_FMT_U8P ] = { AV_CODEC_ID_PCM_U8, AV_CODEC_ID_PCM_U8 },
3259 [AV_SAMPLE_FMT_S16P] = { AV_CODEC_ID_PCM_S16LE, AV_CODEC_ID_PCM_S16BE },
3260 [AV_SAMPLE_FMT_S32P] = { AV_CODEC_ID_PCM_S32LE, AV_CODEC_ID_PCM_S32BE },
3261 [AV_SAMPLE_FMT_FLTP] = { AV_CODEC_ID_PCM_F32LE, AV_CODEC_ID_PCM_F32BE },
3262 [AV_SAMPLE_FMT_DBLP] = { AV_CODEC_ID_PCM_F64LE, AV_CODEC_ID_PCM_F64BE },
3263 };
3264 if (fmt < 0 || fmt >= AV_SAMPLE_FMT_NB)
3265 return AV_CODEC_ID_NONE;
3266 if (be < 0 || be > 1)
3267 be = AV_NE(1, 0);
3268 return map[fmt][be];
3269}
3270
3271int av_get_bits_per_sample(enum AVCodecID codec_id)
3272{
3273 switch (codec_id) {
3274 case AV_CODEC_ID_ADPCM_SBPRO_2:
3275 return 2;
3276 case AV_CODEC_ID_ADPCM_SBPRO_3:
3277 return 3;
3278 case AV_CODEC_ID_ADPCM_SBPRO_4:
3279 case AV_CODEC_ID_ADPCM_IMA_WAV:
3280 case AV_CODEC_ID_ADPCM_IMA_QT:
3281 case AV_CODEC_ID_ADPCM_SWF:
3282 case AV_CODEC_ID_ADPCM_MS:
3283 return 4;
3284 default:
3285 return av_get_exact_bits_per_sample(codec_id);
3286 }
3287}
3288
3289int av_get_audio_frame_duration(AVCodecContext *avctx, int frame_bytes)
3290{
3291 int id, sr, ch, ba, tag, bps;
3292
3293 id = avctx->codec_id;
3294 sr = avctx->sample_rate;
3295 ch = avctx->channels;
3296 ba = avctx->block_align;
3297 tag = avctx->codec_tag;
3298 bps = av_get_exact_bits_per_sample(avctx->codec_id);
3299
3300 /* codecs with an exact constant bits per sample */
3301 if (bps > 0 && ch > 0 && frame_bytes > 0 && ch < 32768 && bps < 32768)
3302 return (frame_bytes * 8LL) / (bps * ch);
3303 bps = avctx->bits_per_coded_sample;
3304
3305 /* codecs with a fixed packet duration */
3306 switch (id) {
3307 case AV_CODEC_ID_ADPCM_ADX: return 32;
3308 case AV_CODEC_ID_ADPCM_IMA_QT: return 64;
3309 case AV_CODEC_ID_ADPCM_EA_XAS: return 128;
3310 case AV_CODEC_ID_AMR_NB:
3311 case AV_CODEC_ID_EVRC:
3312 case AV_CODEC_ID_GSM:
3313 case AV_CODEC_ID_QCELP:
3314 case AV_CODEC_ID_RA_288: return 160;
3315 case AV_CODEC_ID_AMR_WB:
3316 case AV_CODEC_ID_GSM_MS: return 320;
3317 case AV_CODEC_ID_MP1: return 384;
3318 case AV_CODEC_ID_ATRAC1: return 512;
3319 case AV_CODEC_ID_ATRAC3: return 1024;
f6fa7814 3320 case AV_CODEC_ID_ATRAC3P: return 2048;
2ba45a60
DM		 3321 case AV_CODEC_ID_MP2:
3322 case AV_CODEC_ID_MUSEPACK7: return 1152;
3323 case AV_CODEC_ID_AC3: return 1536;
3324 }
3325
3326 if (sr > 0) {
3327 /* calc from sample rate */
3328 if (id == AV_CODEC_ID_TTA)
3329 return 256 * sr / 245;
3330
3331 if (ch > 0) {
3332 /* calc from sample rate and channels */
3333 if (id == AV_CODEC_ID_BINKAUDIO_DCT)
3334 return (480 << (sr / 22050)) / ch;
3335 }
3336 }
3337
3338 if (ba > 0) {
3339 /* calc from block_align */
3340 if (id == AV_CODEC_ID_SIPR) {
3341 switch (ba) {
3342 case 20: return 160;
3343 case 19: return 144;
3344 case 29: return 288;
3345 case 37: return 480;
3346 }
3347 } else if (id == AV_CODEC_ID_ILBC) {
3348 switch (ba) {
3349 case 38: return 160;
3350 case 50: return 240;
3351 }
3352 }
3353 }
3354
3355 if (frame_bytes > 0) {
3356 /* calc from frame_bytes only */
3357 if (id == AV_CODEC_ID_TRUESPEECH)
3358 return 240 * (frame_bytes / 32);
3359 if (id == AV_CODEC_ID_NELLYMOSER)
3360 return 256 * (frame_bytes / 64);
3361 if (id == AV_CODEC_ID_RA_144)
3362 return 160 * (frame_bytes / 20);
3363 if (id == AV_CODEC_ID_G723_1)
3364 return 240 * (frame_bytes / 24);
3365
3366 if (bps > 0) {
3367 /* calc from frame_bytes and bits_per_coded_sample */
3368 if (id == AV_CODEC_ID_ADPCM_G726)
3369 return frame_bytes * 8 / bps;
3370 }
3371
3372 if (ch > 0) {
3373 /* calc from frame_bytes and channels */
3374 switch (id) {
3375 case AV_CODEC_ID_ADPCM_AFC:
3376 return frame_bytes / (9 * ch) * 16;
3377 case AV_CODEC_ID_ADPCM_DTK:
3378 return frame_bytes / (16 * ch) * 28;
3379 case AV_CODEC_ID_ADPCM_4XM:
3380 case AV_CODEC_ID_ADPCM_IMA_ISS:
3381 return (frame_bytes - 4 * ch) * 2 / ch;
3382 case AV_CODEC_ID_ADPCM_IMA_SMJPEG:
3383 return (frame_bytes - 4) * 2 / ch;
3384 case AV_CODEC_ID_ADPCM_IMA_AMV:
3385 return (frame_bytes - 8) * 2 / ch;
3386 case AV_CODEC_ID_ADPCM_XA:
3387 return (frame_bytes / 128) * 224 / ch;
3388 case AV_CODEC_ID_INTERPLAY_DPCM:
3389 return (frame_bytes - 6 - ch) / ch;
3390 case AV_CODEC_ID_ROQ_DPCM:
3391 return (frame_bytes - 8) / ch;
3392 case AV_CODEC_ID_XAN_DPCM:
3393 return (frame_bytes - 2 * ch) / ch;
3394 case AV_CODEC_ID_MACE3:
3395 return 3 * frame_bytes / ch;
3396 case AV_CODEC_ID_MACE6:
3397 return 6 * frame_bytes / ch;
3398 case AV_CODEC_ID_PCM_LXF:
3399 return 2 * (frame_bytes / (5 * ch));
3400 case AV_CODEC_ID_IAC:
3401 case AV_CODEC_ID_IMC:
3402 return 4 * frame_bytes / ch;
3403 }
3404
3405 if (tag) {
3406 /* calc from frame_bytes, channels, and codec_tag */
3407 if (id == AV_CODEC_ID_SOL_DPCM) {
3408 if (tag == 3)
3409 return frame_bytes / ch;
3410 else
3411 return frame_bytes * 2 / ch;
3412 }
3413 }
3414
3415 if (ba > 0) {
3416 /* calc from frame_bytes, channels, and block_align */
3417 int blocks = frame_bytes / ba;
3418 switch (avctx->codec_id) {
3419 case AV_CODEC_ID_ADPCM_IMA_WAV:
3420 if (bps < 2 || bps > 5)
3421 return 0;
3422 return blocks * (1 + (ba - 4 * ch) / (bps * ch) * 8);
3423 case AV_CODEC_ID_ADPCM_IMA_DK3:
3424 return blocks * (((ba - 16) * 2 / 3 * 4) / ch);
3425 case AV_CODEC_ID_ADPCM_IMA_DK4:
3426 return blocks * (1 + (ba - 4 * ch) * 2 / ch);
3427 case AV_CODEC_ID_ADPCM_IMA_RAD:
3428 return blocks * ((ba - 4 * ch) * 2 / ch);
3429 case AV_CODEC_ID_ADPCM_MS:
3430 return blocks * (2 + (ba - 7 * ch) * 2 / ch);
3431 }
3432 }
3433
3434 if (bps > 0) {
3435 /* calc from frame_bytes, channels, and bits_per_coded_sample */
3436 switch (avctx->codec_id) {
3437 case AV_CODEC_ID_PCM_DVD:
3438 if(bps<4)
3439 return 0;
3440 return 2 * (frame_bytes / ((bps * 2 / 8) * ch));
3441 case AV_CODEC_ID_PCM_BLURAY:
3442 if(bps<4)
3443 return 0;
3444 return frame_bytes / ((FFALIGN(ch, 2) * bps) / 8);
3445 case AV_CODEC_ID_S302M:
3446 return 2 * (frame_bytes / ((bps + 4) / 4)) / ch;
3447 }
3448 }
3449 }
3450 }
3451
3452 /* Fall back on using frame_size */
3453 if (avctx->frame_size > 1 && frame_bytes)
3454 return avctx->frame_size;
3455
3456 //For WMA we currently have no other means to calculate duration thus we
3457 //do it here by assuming CBR, which is true for all known cases.
3458 if (avctx->bit_rate>0 && frame_bytes>0 && avctx->sample_rate>0 && avctx->block_align>1) {
3459 if (avctx->codec_id == AV_CODEC_ID_WMAV1 || avctx->codec_id == AV_CODEC_ID_WMAV2)
3460 return (frame_bytes * 8LL * avctx->sample_rate) / avctx->bit_rate;
3461 }
3462
3463 return 0;
3464}
3465
3466#if !HAVE_THREADS
3467int ff_thread_init(AVCodecContext *s)
3468{
3469 return -1;
3470}
3471
3472#endif
3473
3474unsigned int av_xiphlacing(unsigned char *s, unsigned int v)
3475{
3476 unsigned int n = 0;
3477
3478 while (v >= 0xff) {
3479 *s++ = 0xff;
3480 v -= 0xff;
3481 n++;
3482 }
3483 *s = v;
3484 n++;
3485 return n;
3486}
3487
3488int ff_match_2uint16(const uint16_t(*tab)[2], int size, int a, int b)
3489{
3490 int i;
3491 for (i = 0; i < size && !(tab[i][0] == a && tab[i][1] == b); i++) ;
3492 return i;
3493}
3494
3495#if FF_API_MISSING_SAMPLE
3496FF_DISABLE_DEPRECATION_WARNINGS
3497void av_log_missing_feature(void *avc, const char *feature, int want_sample)
3498{
3499 av_log(avc, AV_LOG_WARNING, "%s is not implemented. Update your FFmpeg "
3500 "version to the newest one from Git. If the problem still "
3501 "occurs, it means that your file has a feature which has not "
3502 "been implemented.\n", feature);
3503 if(want_sample)
3504 av_log_ask_for_sample(avc, NULL);
3505}
3506
3507void av_log_ask_for_sample(void *avc, const char *msg, ...)
3508{
3509 va_list argument_list;
3510
3511 va_start(argument_list, msg);
3512
3513 if (msg)
3514 av_vlog(avc, AV_LOG_WARNING, msg, argument_list);
3515 av_log(avc, AV_LOG_WARNING, "If you want to help, upload a sample "
3516 "of this file to ftp://upload.ffmpeg.org/incoming/ "
3517 "and contact the ffmpeg-devel mailing list. (ffmpeg-devel@ffmpeg.org)\n");
3518
3519 va_end(argument_list);
3520}
3521FF_ENABLE_DEPRECATION_WARNINGS
3522#endif /* FF_API_MISSING_SAMPLE */
3523
3524static AVHWAccel *first_hwaccel = NULL;
3525static AVHWAccel **last_hwaccel = &first_hwaccel;
3526
3527void av_register_hwaccel(AVHWAccel *hwaccel)
3528{
3529 AVHWAccel **p = last_hwaccel;
3530 hwaccel->next = NULL;
3531 while(*p || avpriv_atomic_ptr_cas((void * volatile *)p, NULL, hwaccel))
3532 p = &(*p)->next;
3533 last_hwaccel = &hwaccel->next;
3534}
3535
3536AVHWAccel *av_hwaccel_next(const AVHWAccel *hwaccel)
3537{
3538 return hwaccel ? hwaccel->next : first_hwaccel;
3539}
3540
3541int av_lockmgr_register(int (*cb)(void **mutex, enum AVLockOp op))
3542{
3543 if (lockmgr_cb) {
f6fa7814
DM		 3544 // There is no good way to rollback a failure to destroy the
3545 // mutex, so we ignore failures.
3546 lockmgr_cb(&codec_mutex, AV_LOCK_DESTROY);
3547 lockmgr_cb(&avformat_mutex, AV_LOCK_DESTROY);
3548 lockmgr_cb = NULL;
3549 codec_mutex = NULL;
3550 avformat_mutex = NULL;
3551 }
3552
3553 if (cb) {
3554 void *new_codec_mutex = NULL;
3555 void *new_avformat_mutex = NULL;
3556 int err;
3557 if (err = cb(&new_codec_mutex, AV_LOCK_CREATE)) {
3558 return err > 0 ? AVERROR_UNKNOWN : err;
3559 }
3560 if (err = cb(&new_avformat_mutex, AV_LOCK_CREATE)) {
3561 // Ignore failures to destroy the newly created mutex.
3562 cb(&new_codec_mutex, AV_LOCK_DESTROY);
3563 return err > 0 ? AVERROR_UNKNOWN : err;
3564 }
3565 lockmgr_cb = cb;
3566 codec_mutex = new_codec_mutex;
3567 avformat_mutex = new_avformat_mutex;
2ba45a60
DM		 3568 }
3569
2ba45a60
DM		 3570 return 0;
3571}
3572
3573int ff_lock_avcodec(AVCodecContext *log_ctx)
3574{
3575 if (lockmgr_cb) {
3576 if ((*lockmgr_cb)(&codec_mutex, AV_LOCK_OBTAIN))
3577 return -1;
3578 }
3579 entangled_thread_counter++;
3580 if (entangled_thread_counter != 1) {
3581 av_log(log_ctx, AV_LOG_ERROR, "Insufficient thread locking around avcodec_open/close()\n");
3582 if (!lockmgr_cb)
3583 av_log(log_ctx, AV_LOG_ERROR, "No lock manager is set, please see av_lockmgr_register()\n");
3584 ff_avcodec_locked = 1;
3585 ff_unlock_avcodec();
3586 return AVERROR(EINVAL);
3587 }
3588 av_assert0(!ff_avcodec_locked);
3589 ff_avcodec_locked = 1;
3590 return 0;
3591}
3592
3593int ff_unlock_avcodec(void)
3594{
3595 av_assert0(ff_avcodec_locked);
3596 ff_avcodec_locked = 0;
3597 entangled_thread_counter--;
3598 if (lockmgr_cb) {
3599 if ((*lockmgr_cb)(&codec_mutex, AV_LOCK_RELEASE))
3600 return -1;
3601 }
f6fa7814 3602
2ba45a60
DM		 3603 return 0;
3604}
3605
3606int avpriv_lock_avformat(void)
3607{
3608 if (lockmgr_cb) {
3609 if ((*lockmgr_cb)(&avformat_mutex, AV_LOCK_OBTAIN))
3610 return -1;
3611 }
3612 return 0;
3613}
3614
3615int avpriv_unlock_avformat(void)
3616{
3617 if (lockmgr_cb) {
3618 if ((*lockmgr_cb)(&avformat_mutex, AV_LOCK_RELEASE))
3619 return -1;
3620 }
3621 return 0;
3622}
3623
3624unsigned int avpriv_toupper4(unsigned int x)
3625{
3626 return av_toupper(x & 0xFF) +
3627 (av_toupper((x >> 8) & 0xFF) << 8) +
3628 (av_toupper((x >> 16) & 0xFF) << 16) +
3629((unsigned)av_toupper((x >> 24) & 0xFF) << 24);
3630}
3631
3632int ff_thread_ref_frame(ThreadFrame *dst, ThreadFrame *src)
3633{
3634 int ret;
3635
3636 dst->owner = src->owner;
3637
3638 ret = av_frame_ref(dst->f, src->f);
3639 if (ret < 0)
3640 return ret;
3641
3642 if (src->progress &&
3643 !(dst->progress = av_buffer_ref(src->progress))) {
3644 ff_thread_release_buffer(dst->owner, dst);
3645 return AVERROR(ENOMEM);
3646 }
3647
3648 return 0;
3649}
3650
3651#if !HAVE_THREADS
3652
3653enum AVPixelFormat ff_thread_get_format(AVCodecContext *avctx, const enum AVPixelFormat *fmt)
3654{
3655 return ff_get_format(avctx, fmt);
3656}
3657
3658int ff_thread_get_buffer(AVCodecContext *avctx, ThreadFrame *f, int flags)
3659{
3660 f->owner = avctx;
3661 return ff_get_buffer(avctx, f->f, flags);
3662}
3663
3664void ff_thread_release_buffer(AVCodecContext *avctx, ThreadFrame *f)
3665{
3666 if (f->f)
3667 av_frame_unref(f->f);
3668}
3669
3670void ff_thread_finish_setup(AVCodecContext *avctx)
3671{
3672}
3673
3674void ff_thread_report_progress(ThreadFrame *f, int progress, int field)
3675{
3676}
3677
3678void ff_thread_await_progress(ThreadFrame *f, int progress, int field)
3679{
3680}
3681
3682int ff_thread_can_start_frame(AVCodecContext *avctx)
3683{
3684 return 1;
3685}
3686
3687int ff_alloc_entries(AVCodecContext *avctx, int count)
3688{
3689 return 0;
3690}
3691
3692void ff_reset_entries(AVCodecContext *avctx)
3693{
3694}
3695
3696void ff_thread_await_progress2(AVCodecContext *avctx, int field, int thread, int shift)
3697{
3698}
3699
3700void ff_thread_report_progress2(AVCodecContext *avctx, int field, int thread, int n)
3701{
3702}
3703
3704#endif
3705
3706enum AVMediaType avcodec_get_type(enum AVCodecID codec_id)
3707{
3708 AVCodec *c= avcodec_find_decoder(codec_id);
3709 if(!c)
3710 c= avcodec_find_encoder(codec_id);
3711 if(c)
3712 return c->type;
3713
3714 if (codec_id <= AV_CODEC_ID_NONE)
3715 return AVMEDIA_TYPE_UNKNOWN;
3716 else if (codec_id < AV_CODEC_ID_FIRST_AUDIO)
3717 return AVMEDIA_TYPE_VIDEO;
3718 else if (codec_id < AV_CODEC_ID_FIRST_SUBTITLE)
3719 return AVMEDIA_TYPE_AUDIO;
3720 else if (codec_id < AV_CODEC_ID_FIRST_UNKNOWN)
3721 return AVMEDIA_TYPE_SUBTITLE;
3722
3723 return AVMEDIA_TYPE_UNKNOWN;
3724}
3725
3726int avcodec_is_open(AVCodecContext *s)
3727{
3728 return !!s->internal;
3729}
3730
3731int avpriv_bprint_to_extradata(AVCodecContext *avctx, struct AVBPrint *buf)
3732{
3733 int ret;
3734 char *str;
3735
3736 ret = av_bprint_finalize(buf, &str);
3737 if (ret < 0)
3738 return ret;
f6fa7814
DM		 3739 if (!av_bprint_is_complete(buf)) {
3740 av_free(str);
3741 return AVERROR(ENOMEM);
3742 }
3743
2ba45a60
DM		 3744 avctx->extradata = str;
3745 /* Note: the string is NUL terminated (so extradata can be read as a
3746 * string), but the ending character is not accounted in the size (in
3747 * binary formats you are likely not supposed to mux that character). When
3748 * extradata is copied, it is also padded with FF_INPUT_BUFFER_PADDING_SIZE
3749 * zeros. */
3750 avctx->extradata_size = buf->len;
3751 return 0;
3752}
3753
3754const uint8_t *avpriv_find_start_code(const uint8_t *av_restrict p,
3755 const uint8_t *end,
3756 uint32_t *av_restrict state)
3757{
3758 int i;
3759
3760 av_assert0(p <= end);
3761 if (p >= end)
3762 return end;
3763
3764 for (i = 0; i < 3; i++) {
3765 uint32_t tmp = *state << 8;
3766 *state = tmp + *(p++);
3767 if (tmp == 0x100 || p == end)
3768 return p;
3769 }
3770
3771 while (p < end) {
3772 if (p[-1] > 1 ) p += 3;
3773 else if (p[-2] ) p += 2;
3774 else if (p[-3]|(p[-1]-1)) p++;
3775 else {
3776 p++;
3777 break;
3778 }
3779 }
3780
3781 p = FFMIN(p, end) - 4;
3782 *state = AV_RB32(p);
3783
3784 return p + 4;
3785}
ffmpeg Piment Noir Debian package repository