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Imported Debian version 2.4.3~trusty1
[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
69#if HAVE_PTHREADS || HAVE_W32THREADS || HAVE_OS2THREADS
70static int default_lockmgr_cb(void **arg, enum AVLockOp op)
71{
72 void * volatile * mutex = arg;
73 int err;
74
75 switch (op) {
76 case AV_LOCK_CREATE:
77 return 0;
78 case AV_LOCK_OBTAIN:
79 if (!*mutex) {
80 pthread_mutex_t *tmp = av_malloc(sizeof(pthread_mutex_t));
81 if (!tmp)
82 return AVERROR(ENOMEM);
83 if ((err = pthread_mutex_init(tmp, NULL))) {
84 av_free(tmp);
85 return AVERROR(err);
86 }
87 if (avpriv_atomic_ptr_cas(mutex, NULL, tmp)) {
88 pthread_mutex_destroy(tmp);
89 av_free(tmp);
90 }
91 }
92
93 if ((err = pthread_mutex_lock(*mutex)))
94 return AVERROR(err);
95
96 return 0;
97 case AV_LOCK_RELEASE:
98 if ((err = pthread_mutex_unlock(*mutex)))
99 return AVERROR(err);
100
101 return 0;
102 case AV_LOCK_DESTROY:
103 if (*mutex)
104 pthread_mutex_destroy(*mutex);
105 av_free(*mutex);
106 avpriv_atomic_ptr_cas(mutex, *mutex, NULL);
107 return 0;
108 }
109 return 1;
110}
111static int (*lockmgr_cb)(void **mutex, enum AVLockOp op) = default_lockmgr_cb;
112#else
113static int (*lockmgr_cb)(void **mutex, enum AVLockOp op) = NULL;
114#endif
115
116
117volatile int ff_avcodec_locked;
118static int volatile entangled_thread_counter = 0;
119static void *codec_mutex;
120static void *avformat_mutex;
121
122static inline int ff_fast_malloc(void *ptr, unsigned int *size, size_t min_size, int zero_realloc)
123{
124 void **p = ptr;
125 if (min_size < *size)
126 return 0;
127 min_size = FFMAX(17 * min_size / 16 + 32, min_size);
128 av_free(*p);
129 *p = zero_realloc ? av_mallocz(min_size) : av_malloc(min_size);
130 if (!*p)
131 min_size = 0;
132 *size = min_size;
133 return 1;
134}
135
136void av_fast_padded_malloc(void *ptr, unsigned int *size, size_t min_size)
137{
138 uint8_t **p = ptr;
139 if (min_size > SIZE_MAX - FF_INPUT_BUFFER_PADDING_SIZE) {
140 av_freep(p);
141 *size = 0;
142 return;
143 }
144 if (!ff_fast_malloc(p, size, min_size + FF_INPUT_BUFFER_PADDING_SIZE, 1))
145 memset(*p + min_size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
146}
147
148void av_fast_padded_mallocz(void *ptr, unsigned int *size, size_t min_size)
149{
150 uint8_t **p = ptr;
151 if (min_size > SIZE_MAX - FF_INPUT_BUFFER_PADDING_SIZE) {
152 av_freep(p);
153 *size = 0;
154 return;
155 }
156 if (!ff_fast_malloc(p, size, min_size + FF_INPUT_BUFFER_PADDING_SIZE, 1))
157 memset(*p, 0, min_size + FF_INPUT_BUFFER_PADDING_SIZE);
158}
159
160/* encoder management */
161static AVCodec *first_avcodec = NULL;
162static AVCodec **last_avcodec = &first_avcodec;
163
164AVCodec *av_codec_next(const AVCodec *c)
165{
166 if (c)
167 return c->next;
168 else
169 return first_avcodec;
170}
171
172static av_cold void avcodec_init(void)
173{
174 static int initialized = 0;
175
176 if (initialized != 0)
177 return;
178 initialized = 1;
179
180 if (CONFIG_ME_CMP)
181 ff_me_cmp_init_static();
182}
183
184int av_codec_is_encoder(const AVCodec *codec)
185{
186 return codec && (codec->encode_sub || codec->encode2);
187}
188
189int av_codec_is_decoder(const AVCodec *codec)
190{
191 return codec && codec->decode;
192}
193
194av_cold void avcodec_register(AVCodec *codec)
195{
196 AVCodec **p;
197 avcodec_init();
198 p = last_avcodec;
199 codec->next = NULL;
200
201 while(*p || avpriv_atomic_ptr_cas((void * volatile *)p, NULL, codec))
202 p = &(*p)->next;
203 last_avcodec = &codec->next;
204
205 if (codec->init_static_data)
206 codec->init_static_data(codec);
207}
208
209#if FF_API_EMU_EDGE
210unsigned avcodec_get_edge_width(void)
211{
212 return EDGE_WIDTH;
213}
214#endif
215
216#if FF_API_SET_DIMENSIONS
217void avcodec_set_dimensions(AVCodecContext *s, int width, int height)
218{
219 int ret = ff_set_dimensions(s, width, height);
220 if (ret < 0) {
221 av_log(s, AV_LOG_WARNING, "Failed to set dimensions %d %d\n", width, height);
222 }
223}
224#endif
225
226int ff_set_dimensions(AVCodecContext *s, int width, int height)
227{
228 int ret = av_image_check_size(width, height, 0, s);
229
230 if (ret < 0)
231 width = height = 0;
232
233 s->coded_width = width;
234 s->coded_height = height;
235 s->width = FF_CEIL_RSHIFT(width, s->lowres);
236 s->height = FF_CEIL_RSHIFT(height, s->lowres);
237
238 return ret;
239}
240
241int ff_set_sar(AVCodecContext *avctx, AVRational sar)
242{
243 int ret = av_image_check_sar(avctx->width, avctx->height, sar);
244
245 if (ret < 0) {
246 av_log(avctx, AV_LOG_WARNING, "ignoring invalid SAR: %u/%u\n",
247 sar.num, sar.den);
248 avctx->sample_aspect_ratio = (AVRational){ 0, 1 };
249 return ret;
250 } else {
251 avctx->sample_aspect_ratio = sar;
252 }
253 return 0;
254}
255
256int ff_side_data_update_matrix_encoding(AVFrame *frame,
257 enum AVMatrixEncoding matrix_encoding)
258{
259 AVFrameSideData *side_data;
260 enum AVMatrixEncoding *data;
261
262 side_data = av_frame_get_side_data(frame, AV_FRAME_DATA_MATRIXENCODING);
263 if (!side_data)
264 side_data = av_frame_new_side_data(frame, AV_FRAME_DATA_MATRIXENCODING,
265 sizeof(enum AVMatrixEncoding));
266
267 if (!side_data)
268 return AVERROR(ENOMEM);
269
270 data = (enum AVMatrixEncoding*)side_data->data;
271 *data = matrix_encoding;
272
273 return 0;
274}
275
276void avcodec_align_dimensions2(AVCodecContext *s, int *width, int *height,
277 int linesize_align[AV_NUM_DATA_POINTERS])
278{
279 int i;
280 int w_align = 1;
281 int h_align = 1;
282 AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(s->pix_fmt);
283
284 if (desc) {
285 w_align = 1 << desc->log2_chroma_w;
286 h_align = 1 << desc->log2_chroma_h;
287 }
288
289 switch (s->pix_fmt) {
290 case AV_PIX_FMT_YUV420P:
291 case AV_PIX_FMT_YUYV422:
292 case AV_PIX_FMT_YVYU422:
293 case AV_PIX_FMT_UYVY422:
294 case AV_PIX_FMT_YUV422P:
295 case AV_PIX_FMT_YUV440P:
296 case AV_PIX_FMT_YUV444P:
297 case AV_PIX_FMT_GBRAP:
298 case AV_PIX_FMT_GBRP:
299 case AV_PIX_FMT_GRAY8:
300 case AV_PIX_FMT_GRAY16BE:
301 case AV_PIX_FMT_GRAY16LE:
302 case AV_PIX_FMT_YUVJ420P:
303 case AV_PIX_FMT_YUVJ422P:
304 case AV_PIX_FMT_YUVJ440P:
305 case AV_PIX_FMT_YUVJ444P:
306 case AV_PIX_FMT_YUVA420P:
307 case AV_PIX_FMT_YUVA422P:
308 case AV_PIX_FMT_YUVA444P:
309 case AV_PIX_FMT_YUV420P9LE:
310 case AV_PIX_FMT_YUV420P9BE:
311 case AV_PIX_FMT_YUV420P10LE:
312 case AV_PIX_FMT_YUV420P10BE:
313 case AV_PIX_FMT_YUV420P12LE:
314 case AV_PIX_FMT_YUV420P12BE:
315 case AV_PIX_FMT_YUV420P14LE:
316 case AV_PIX_FMT_YUV420P14BE:
317 case AV_PIX_FMT_YUV420P16LE:
318 case AV_PIX_FMT_YUV420P16BE:
319 case AV_PIX_FMT_YUVA420P9LE:
320 case AV_PIX_FMT_YUVA420P9BE:
321 case AV_PIX_FMT_YUVA420P10LE:
322 case AV_PIX_FMT_YUVA420P10BE:
323 case AV_PIX_FMT_YUVA420P16LE:
324 case AV_PIX_FMT_YUVA420P16BE:
325 case AV_PIX_FMT_YUV422P9LE:
326 case AV_PIX_FMT_YUV422P9BE:
327 case AV_PIX_FMT_YUV422P10LE:
328 case AV_PIX_FMT_YUV422P10BE:
329 case AV_PIX_FMT_YUV422P12LE:
330 case AV_PIX_FMT_YUV422P12BE:
331 case AV_PIX_FMT_YUV422P14LE:
332 case AV_PIX_FMT_YUV422P14BE:
333 case AV_PIX_FMT_YUV422P16LE:
334 case AV_PIX_FMT_YUV422P16BE:
335 case AV_PIX_FMT_YUVA422P9LE:
336 case AV_PIX_FMT_YUVA422P9BE:
337 case AV_PIX_FMT_YUVA422P10LE:
338 case AV_PIX_FMT_YUVA422P10BE:
339 case AV_PIX_FMT_YUVA422P16LE:
340 case AV_PIX_FMT_YUVA422P16BE:
341 case AV_PIX_FMT_YUV444P9LE:
342 case AV_PIX_FMT_YUV444P9BE:
343 case AV_PIX_FMT_YUV444P10LE:
344 case AV_PIX_FMT_YUV444P10BE:
345 case AV_PIX_FMT_YUV444P12LE:
346 case AV_PIX_FMT_YUV444P12BE:
347 case AV_PIX_FMT_YUV444P14LE:
348 case AV_PIX_FMT_YUV444P14BE:
349 case AV_PIX_FMT_YUV444P16LE:
350 case AV_PIX_FMT_YUV444P16BE:
351 case AV_PIX_FMT_YUVA444P9LE:
352 case AV_PIX_FMT_YUVA444P9BE:
353 case AV_PIX_FMT_YUVA444P10LE:
354 case AV_PIX_FMT_YUVA444P10BE:
355 case AV_PIX_FMT_YUVA444P16LE:
356 case AV_PIX_FMT_YUVA444P16BE:
357 case AV_PIX_FMT_GBRP9LE:
358 case AV_PIX_FMT_GBRP9BE:
359 case AV_PIX_FMT_GBRP10LE:
360 case AV_PIX_FMT_GBRP10BE:
361 case AV_PIX_FMT_GBRP12LE:
362 case AV_PIX_FMT_GBRP12BE:
363 case AV_PIX_FMT_GBRP14LE:
364 case AV_PIX_FMT_GBRP14BE:
365 case AV_PIX_FMT_GBRP16LE:
366 case AV_PIX_FMT_GBRP16BE:
367 w_align = 16; //FIXME assume 16 pixel per macroblock
368 h_align = 16 * 2; // interlaced needs 2 macroblocks height
369 break;
370 case AV_PIX_FMT_YUV411P:
371 case AV_PIX_FMT_YUVJ411P:
372 case AV_PIX_FMT_UYYVYY411:
373 w_align = 32;
374 h_align = 8;
375 break;
376 case AV_PIX_FMT_YUV410P:
377 if (s->codec_id == AV_CODEC_ID_SVQ1) {
378 w_align = 64;
379 h_align = 64;
380 }
381 break;
382 case AV_PIX_FMT_RGB555:
383 if (s->codec_id == AV_CODEC_ID_RPZA) {
384 w_align = 4;
385 h_align = 4;
386 }
387 break;
388 case AV_PIX_FMT_PAL8:
389 case AV_PIX_FMT_BGR8:
390 case AV_PIX_FMT_RGB8:
391 if (s->codec_id == AV_CODEC_ID_SMC ||
392 s->codec_id == AV_CODEC_ID_CINEPAK) {
393 w_align = 4;
394 h_align = 4;
395 }
396 if (s->codec_id == AV_CODEC_ID_JV) {
397 w_align = 8;
398 h_align = 8;
399 }
400 break;
401 case AV_PIX_FMT_BGR24:
402 if ((s->codec_id == AV_CODEC_ID_MSZH) ||
403 (s->codec_id == AV_CODEC_ID_ZLIB)) {
404 w_align = 4;
405 h_align = 4;
406 }
407 break;
408 case AV_PIX_FMT_RGB24:
409 if (s->codec_id == AV_CODEC_ID_CINEPAK) {
410 w_align = 4;
411 h_align = 4;
412 }
413 break;
414 default:
415 break;
416 }
417
418 if (s->codec_id == AV_CODEC_ID_IFF_ILBM || s->codec_id == AV_CODEC_ID_IFF_BYTERUN1) {
419 w_align = FFMAX(w_align, 8);
420 }
421
422 *width = FFALIGN(*width, w_align);
423 *height = FFALIGN(*height, h_align);
424 if (s->codec_id == AV_CODEC_ID_H264 || s->lowres)
425 // some of the optimized chroma MC reads one line too much
426 // which is also done in mpeg decoders with lowres > 0
427 *height += 2;
428
429 for (i = 0; i < 4; i++)
430 linesize_align[i] = STRIDE_ALIGN;
431}
432
433void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height)
434{
435 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(s->pix_fmt);
436 int chroma_shift = desc->log2_chroma_w;
437 int linesize_align[AV_NUM_DATA_POINTERS];
438 int align;
439
440 avcodec_align_dimensions2(s, width, height, linesize_align);
441 align = FFMAX(linesize_align[0], linesize_align[3]);
442 linesize_align[1] <<= chroma_shift;
443 linesize_align[2] <<= chroma_shift;
444 align = FFMAX3(align, linesize_align[1], linesize_align[2]);
445 *width = FFALIGN(*width, align);
446}
447
448int avcodec_enum_to_chroma_pos(int *xpos, int *ypos, enum AVChromaLocation pos)
449{
450 if (pos <= AVCHROMA_LOC_UNSPECIFIED || pos >= AVCHROMA_LOC_NB)
451 return AVERROR(EINVAL);
452 pos--;
453
454 *xpos = (pos&1) * 128;
455 *ypos = ((pos>>1)^(pos<4)) * 128;
456
457 return 0;
458}
459
460enum AVChromaLocation avcodec_chroma_pos_to_enum(int xpos, int ypos)
461{
462 int pos, xout, yout;
463
464 for (pos = AVCHROMA_LOC_UNSPECIFIED + 1; pos < AVCHROMA_LOC_NB; pos++) {
465 if (avcodec_enum_to_chroma_pos(&xout, &yout, pos) == 0 && xout == xpos && yout == ypos)
466 return pos;
467 }
468 return AVCHROMA_LOC_UNSPECIFIED;
469}
470
471int avcodec_fill_audio_frame(AVFrame *frame, int nb_channels,
472 enum AVSampleFormat sample_fmt, const uint8_t *buf,
473 int buf_size, int align)
474{
475 int ch, planar, needed_size, ret = 0;
476
477 needed_size = av_samples_get_buffer_size(NULL, nb_channels,
478 frame->nb_samples, sample_fmt,
479 align);
480 if (buf_size < needed_size)
481 return AVERROR(EINVAL);
482
483 planar = av_sample_fmt_is_planar(sample_fmt);
484 if (planar && nb_channels > AV_NUM_DATA_POINTERS) {
485 if (!(frame->extended_data = av_mallocz_array(nb_channels,
486 sizeof(*frame->extended_data))))
487 return AVERROR(ENOMEM);
488 } else {
489 frame->extended_data = frame->data;
490 }
491
492 if ((ret = av_samples_fill_arrays(frame->extended_data, &frame->linesize[0],
493 (uint8_t *)(intptr_t)buf, nb_channels, frame->nb_samples,
494 sample_fmt, align)) < 0) {
495 if (frame->extended_data != frame->data)
496 av_freep(&frame->extended_data);
497 return ret;
498 }
499 if (frame->extended_data != frame->data) {
500 for (ch = 0; ch < AV_NUM_DATA_POINTERS; ch++)
501 frame->data[ch] = frame->extended_data[ch];
502 }
503
504 return ret;
505}
506
507static int update_frame_pool(AVCodecContext *avctx, AVFrame *frame)
508{
509 FramePool *pool = avctx->internal->pool;
510 int i, ret;
511
512 switch (avctx->codec_type) {
513 case AVMEDIA_TYPE_VIDEO: {
514 AVPicture picture;
515 int size[4] = { 0 };
516 int w = frame->width;
517 int h = frame->height;
518 int tmpsize, unaligned;
519
520 if (pool->format == frame->format &&
521 pool->width == frame->width && pool->height == frame->height)
522 return 0;
523
524 avcodec_align_dimensions2(avctx, &w, &h, pool->stride_align);
525
526 do {
527 // NOTE: do not align linesizes individually, this breaks e.g. assumptions
528 // that linesize[0] == 2*linesize[1] in the MPEG-encoder for 4:2:2
529 av_image_fill_linesizes(picture.linesize, avctx->pix_fmt, w);
530 // increase alignment of w for next try (rhs gives the lowest bit set in w)
531 w += w & ~(w - 1);
532
533 unaligned = 0;
534 for (i = 0; i < 4; i++)
535 unaligned |= picture.linesize[i] % pool->stride_align[i];
536 } while (unaligned);
537
538 tmpsize = av_image_fill_pointers(picture.data, avctx->pix_fmt, h,
539 NULL, picture.linesize);
540 if (tmpsize < 0)
541 return -1;
542
543 for (i = 0; i < 3 && picture.data[i + 1]; i++)
544 size[i] = picture.data[i + 1] - picture.data[i];
545 size[i] = tmpsize - (picture.data[i] - picture.data[0]);
546
547 for (i = 0; i < 4; i++) {
548 av_buffer_pool_uninit(&pool->pools[i]);
549 pool->linesize[i] = picture.linesize[i];
550 if (size[i]) {
551 pool->pools[i] = av_buffer_pool_init(size[i] + 16 + STRIDE_ALIGN - 1,
552 CONFIG_MEMORY_POISONING ?
553 NULL :
554 av_buffer_allocz);
555 if (!pool->pools[i]) {
556 ret = AVERROR(ENOMEM);
557 goto fail;
558 }
559 }
560 }
561 pool->format = frame->format;
562 pool->width = frame->width;
563 pool->height = frame->height;
564
565 break;
566 }
567 case AVMEDIA_TYPE_AUDIO: {
568 int ch = av_frame_get_channels(frame); //av_get_channel_layout_nb_channels(frame->channel_layout);
569 int planar = av_sample_fmt_is_planar(frame->format);
570 int planes = planar ? ch : 1;
571
572 if (pool->format == frame->format && pool->planes == planes &&
573 pool->channels == ch && frame->nb_samples == pool->samples)
574 return 0;
575
576 av_buffer_pool_uninit(&pool->pools[0]);
577 ret = av_samples_get_buffer_size(&pool->linesize[0], ch,
578 frame->nb_samples, frame->format, 0);
579 if (ret < 0)
580 goto fail;
581
582 pool->pools[0] = av_buffer_pool_init(pool->linesize[0], NULL);
583 if (!pool->pools[0]) {
584 ret = AVERROR(ENOMEM);
585 goto fail;
586 }
587
588 pool->format = frame->format;
589 pool->planes = planes;
590 pool->channels = ch;
591 pool->samples = frame->nb_samples;
592 break;
593 }
594 default: av_assert0(0);
595 }
596 return 0;
597fail:
598 for (i = 0; i < 4; i++)
599 av_buffer_pool_uninit(&pool->pools[i]);
600 pool->format = -1;
601 pool->planes = pool->channels = pool->samples = 0;
602 pool->width = pool->height = 0;
603 return ret;
604}
605
606static int audio_get_buffer(AVCodecContext *avctx, AVFrame *frame)
607{
608 FramePool *pool = avctx->internal->pool;
609 int planes = pool->planes;
610 int i;
611
612 frame->linesize[0] = pool->linesize[0];
613
614 if (planes > AV_NUM_DATA_POINTERS) {
615 frame->extended_data = av_mallocz_array(planes, sizeof(*frame->extended_data));
616 frame->nb_extended_buf = planes - AV_NUM_DATA_POINTERS;
617 frame->extended_buf = av_mallocz_array(frame->nb_extended_buf,
618 sizeof(*frame->extended_buf));
619 if (!frame->extended_data || !frame->extended_buf) {
620 av_freep(&frame->extended_data);
621 av_freep(&frame->extended_buf);
622 return AVERROR(ENOMEM);
623 }
624 } else {
625 frame->extended_data = frame->data;
626 av_assert0(frame->nb_extended_buf == 0);
627 }
628
629 for (i = 0; i < FFMIN(planes, AV_NUM_DATA_POINTERS); i++) {
630 frame->buf[i] = av_buffer_pool_get(pool->pools[0]);
631 if (!frame->buf[i])
632 goto fail;
633 frame->extended_data[i] = frame->data[i] = frame->buf[i]->data;
634 }
635 for (i = 0; i < frame->nb_extended_buf; i++) {
636 frame->extended_buf[i] = av_buffer_pool_get(pool->pools[0]);
637 if (!frame->extended_buf[i])
638 goto fail;
639 frame->extended_data[i + AV_NUM_DATA_POINTERS] = frame->extended_buf[i]->data;
640 }
641
642 if (avctx->debug & FF_DEBUG_BUFFERS)
643 av_log(avctx, AV_LOG_DEBUG, "default_get_buffer called on frame %p", frame);
644
645 return 0;
646fail:
647 av_frame_unref(frame);
648 return AVERROR(ENOMEM);
649}
650
651static int video_get_buffer(AVCodecContext *s, AVFrame *pic)
652{
653 FramePool *pool = s->internal->pool;
654 int i;
655
656 if (pic->data[0]) {
657 av_log(s, AV_LOG_ERROR, "pic->data[0]!=NULL in avcodec_default_get_buffer\n");
658 return -1;
659 }
660
661 memset(pic->data, 0, sizeof(pic->data));
662 pic->extended_data = pic->data;
663
664 for (i = 0; i < 4 && pool->pools[i]; i++) {
665 pic->linesize[i] = pool->linesize[i];
666
667 pic->buf[i] = av_buffer_pool_get(pool->pools[i]);
668 if (!pic->buf[i])
669 goto fail;
670
671 pic->data[i] = pic->buf[i]->data;
672 }
673 for (; i < AV_NUM_DATA_POINTERS; i++) {
674 pic->data[i] = NULL;
675 pic->linesize[i] = 0;
676 }
677 if (pic->data[1] && !pic->data[2])
678 avpriv_set_systematic_pal2((uint32_t *)pic->data[1], s->pix_fmt);
679
680 if (s->debug & FF_DEBUG_BUFFERS)
681 av_log(s, AV_LOG_DEBUG, "default_get_buffer called on pic %p\n", pic);
682
683 return 0;
684fail:
685 av_frame_unref(pic);
686 return AVERROR(ENOMEM);
687}
688
689void avpriv_color_frame(AVFrame *frame, const int c[4])
690{
691 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(frame->format);
692 int p, y, x;
693
694 av_assert0(desc->flags & AV_PIX_FMT_FLAG_PLANAR);
695
696 for (p = 0; p<desc->nb_components; p++) {
697 uint8_t *dst = frame->data[p];
698 int is_chroma = p == 1 || p == 2;
699 int bytes = is_chroma ? FF_CEIL_RSHIFT(frame->width, desc->log2_chroma_w) : frame->width;
700 int height = is_chroma ? FF_CEIL_RSHIFT(frame->height, desc->log2_chroma_h) : frame->height;
701 for (y = 0; y < height; y++) {
702 if (desc->comp[0].depth_minus1 >= 8) {
703 for (x = 0; x<bytes; x++)
704 ((uint16_t*)dst)[x] = c[p];
705 }else
706 memset(dst, c[p], bytes);
707 dst += frame->linesize[p];
708 }
709 }
710}
711
712int avcodec_default_get_buffer2(AVCodecContext *avctx, AVFrame *frame, int flags)
713{
714 int ret;
715
716 if ((ret = update_frame_pool(avctx, frame)) < 0)
717 return ret;
718
719#if FF_API_GET_BUFFER
720FF_DISABLE_DEPRECATION_WARNINGS
721 frame->type = FF_BUFFER_TYPE_INTERNAL;
722FF_ENABLE_DEPRECATION_WARNINGS
723#endif
724
725 switch (avctx->codec_type) {
726 case AVMEDIA_TYPE_VIDEO:
727 return video_get_buffer(avctx, frame);
728 case AVMEDIA_TYPE_AUDIO:
729 return audio_get_buffer(avctx, frame);
730 default:
731 return -1;
732 }
733}
734
735int ff_init_buffer_info(AVCodecContext *avctx, AVFrame *frame)
736{
737 AVPacket *pkt = avctx->internal->pkt;
738
739 if (pkt) {
740 uint8_t *packet_sd;
741 AVFrameSideData *frame_sd;
742 int size;
743 frame->pkt_pts = pkt->pts;
744 av_frame_set_pkt_pos (frame, pkt->pos);
745 av_frame_set_pkt_duration(frame, pkt->duration);
746 av_frame_set_pkt_size (frame, pkt->size);
747
748 /* copy the replaygain data to the output frame */
749 packet_sd = av_packet_get_side_data(pkt, AV_PKT_DATA_REPLAYGAIN, &size);
750 if (packet_sd) {
751 frame_sd = av_frame_new_side_data(frame, AV_FRAME_DATA_REPLAYGAIN, size);
752 if (!frame_sd)
753 return AVERROR(ENOMEM);
754
755 memcpy(frame_sd->data, packet_sd, size);
756 }
757
758 /* copy the displaymatrix to the output frame */
759 packet_sd = av_packet_get_side_data(pkt, AV_PKT_DATA_DISPLAYMATRIX, &size);
760 if (packet_sd) {
761 frame_sd = av_frame_new_side_data(frame, AV_FRAME_DATA_DISPLAYMATRIX, size);
762 if (!frame_sd)
763 return AVERROR(ENOMEM);
764
765 memcpy(frame_sd->data, packet_sd, size);
766 }
767
768 /* copy the stereo3d format to the output frame */
769 packet_sd = av_packet_get_side_data(pkt, AV_PKT_DATA_STEREO3D, &size);
770 if (packet_sd) {
771 frame_sd = av_frame_new_side_data(frame, AV_FRAME_DATA_STEREO3D, size);
772 if (!frame_sd)
773 return AVERROR(ENOMEM);
774
775 memcpy(frame_sd->data, packet_sd, size);
776 }
777 } else {
778 frame->pkt_pts = AV_NOPTS_VALUE;
779 av_frame_set_pkt_pos (frame, -1);
780 av_frame_set_pkt_duration(frame, 0);
781 av_frame_set_pkt_size (frame, -1);
782 }
783 frame->reordered_opaque = avctx->reordered_opaque;
784
785 if (frame->color_primaries == AVCOL_PRI_UNSPECIFIED)
786 frame->color_primaries = avctx->color_primaries;
787 if (frame->color_trc == AVCOL_TRC_UNSPECIFIED)
788 frame->color_trc = avctx->color_trc;
789 if (av_frame_get_colorspace(frame) == AVCOL_SPC_UNSPECIFIED)
790 av_frame_set_colorspace(frame, avctx->colorspace);
791 if (av_frame_get_color_range(frame) == AVCOL_RANGE_UNSPECIFIED)
792 av_frame_set_color_range(frame, avctx->color_range);
793 if (frame->chroma_location == AVCHROMA_LOC_UNSPECIFIED)
794 frame->chroma_location = avctx->chroma_sample_location;
795
796 switch (avctx->codec->type) {
797 case AVMEDIA_TYPE_VIDEO:
798 frame->format = avctx->pix_fmt;
799 if (!frame->sample_aspect_ratio.num)
800 frame->sample_aspect_ratio = avctx->sample_aspect_ratio;
801
802 if (frame->width && frame->height &&
803 av_image_check_sar(frame->width, frame->height,
804 frame->sample_aspect_ratio) < 0) {
805 av_log(avctx, AV_LOG_WARNING, "ignoring invalid SAR: %u/%u\n",
806 frame->sample_aspect_ratio.num,
807 frame->sample_aspect_ratio.den);
808 frame->sample_aspect_ratio = (AVRational){ 0, 1 };
809 }
810
811 break;
812 case AVMEDIA_TYPE_AUDIO:
813 if (!frame->sample_rate)
814 frame->sample_rate = avctx->sample_rate;
815 if (frame->format < 0)
816 frame->format = avctx->sample_fmt;
817 if (!frame->channel_layout) {
818 if (avctx->channel_layout) {
819 if (av_get_channel_layout_nb_channels(avctx->channel_layout) !=
820 avctx->channels) {
821 av_log(avctx, AV_LOG_ERROR, "Inconsistent channel "
822 "configuration.\n");
823 return AVERROR(EINVAL);
824 }
825
826 frame->channel_layout = avctx->channel_layout;
827 } else {
828 if (avctx->channels > FF_SANE_NB_CHANNELS) {
829 av_log(avctx, AV_LOG_ERROR, "Too many channels: %d.\n",
830 avctx->channels);
831 return AVERROR(ENOSYS);
832 }
833 }
834 }
835 av_frame_set_channels(frame, avctx->channels);
836 break;
837 }
838 return 0;
839}
840
841#if FF_API_GET_BUFFER
842FF_DISABLE_DEPRECATION_WARNINGS
843int avcodec_default_get_buffer(AVCodecContext *avctx, AVFrame *frame)
844{
845 return avcodec_default_get_buffer2(avctx, frame, 0);
846}
847
848typedef struct CompatReleaseBufPriv {
849 AVCodecContext avctx;
850 AVFrame frame;
851 uint8_t avframe_padding[1024]; // hack to allow linking to a avutil with larger AVFrame
852} CompatReleaseBufPriv;
853
854static void compat_free_buffer(void *opaque, uint8_t *data)
855{
856 CompatReleaseBufPriv *priv = opaque;
857 if (priv->avctx.release_buffer)
858 priv->avctx.release_buffer(&priv->avctx, &priv->frame);
859 av_freep(&priv);
860}
861
862static void compat_release_buffer(void *opaque, uint8_t *data)
863{
864 AVBufferRef *buf = opaque;
865 av_buffer_unref(&buf);
866}
867FF_ENABLE_DEPRECATION_WARNINGS
868#endif
869
870int ff_decode_frame_props(AVCodecContext *avctx, AVFrame *frame)
871{
872 return ff_init_buffer_info(avctx, frame);
873}
874
875static int get_buffer_internal(AVCodecContext *avctx, AVFrame *frame, int flags)
876{
877 const AVHWAccel *hwaccel = avctx->hwaccel;
878 int override_dimensions = 1;
879 int ret;
880
881 if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
882 if ((ret = av_image_check_size(avctx->width, avctx->height, 0, avctx)) < 0 || avctx->pix_fmt<0) {
883 av_log(avctx, AV_LOG_ERROR, "video_get_buffer: image parameters invalid\n");
884 return AVERROR(EINVAL);
885 }
886 }
887 if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
888 if (frame->width <= 0 || frame->height <= 0) {
889 frame->width = FFMAX(avctx->width, FF_CEIL_RSHIFT(avctx->coded_width, avctx->lowres));
890 frame->height = FFMAX(avctx->height, FF_CEIL_RSHIFT(avctx->coded_height, avctx->lowres));
891 override_dimensions = 0;
892 }
893 }
894 ret = ff_decode_frame_props(avctx, frame);
895 if (ret < 0)
896 return ret;
897 if ((ret = ff_init_buffer_info(avctx, frame)) < 0)
898 return ret;
899
900 if (hwaccel && hwaccel->alloc_frame) {
901 ret = hwaccel->alloc_frame(avctx, frame);
902 goto end;
903 }
904
905#if FF_API_GET_BUFFER
906FF_DISABLE_DEPRECATION_WARNINGS
907 /*
908 * Wrap an old get_buffer()-allocated buffer in a bunch of AVBuffers.
909 * We wrap each plane in its own AVBuffer. Each of those has a reference to
910 * a dummy AVBuffer as its private data, unreffing it on free.
911 * When all the planes are freed, the dummy buffer's free callback calls
912 * release_buffer().
913 */
914 if (avctx->get_buffer) {
915 CompatReleaseBufPriv *priv = NULL;
916 AVBufferRef *dummy_buf = NULL;
917 int planes, i, ret;
918
919 if (flags & AV_GET_BUFFER_FLAG_REF)
920 frame->reference = 1;
921
922 ret = avctx->get_buffer(avctx, frame);
923 if (ret < 0)
924 return ret;
925
926 /* return if the buffers are already set up
927 * this would happen e.g. when a custom get_buffer() calls
928 * avcodec_default_get_buffer
929 */
930 if (frame->buf[0])
931 goto end0;
932
933 priv = av_mallocz(sizeof(*priv));
934 if (!priv) {
935 ret = AVERROR(ENOMEM);
936 goto fail;
937 }
938 priv->avctx = *avctx;
939 priv->frame = *frame;
940
941 dummy_buf = av_buffer_create(NULL, 0, compat_free_buffer, priv, 0);
942 if (!dummy_buf) {
943 ret = AVERROR(ENOMEM);
944 goto fail;
945 }
946
947#define WRAP_PLANE(ref_out, data, data_size) \
948do { \
949 AVBufferRef *dummy_ref = av_buffer_ref(dummy_buf); \
950 if (!dummy_ref) { \
951 ret = AVERROR(ENOMEM); \
952 goto fail; \
953 } \
954 ref_out = av_buffer_create(data, data_size, compat_release_buffer, \
955 dummy_ref, 0); \
956 if (!ref_out) { \
957 av_frame_unref(frame); \
958 ret = AVERROR(ENOMEM); \
959 goto fail; \
960 } \
961} while (0)
962
963 if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
964 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(frame->format);
965
966 planes = av_pix_fmt_count_planes(frame->format);
967 /* workaround for AVHWAccel plane count of 0, buf[0] is used as
968 check for allocated buffers: make libavcodec happy */
969 if (desc && desc->flags & AV_PIX_FMT_FLAG_HWACCEL)
970 planes = 1;
971 if (!desc || planes <= 0) {
972 ret = AVERROR(EINVAL);
973 goto fail;
974 }
975
976 for (i = 0; i < planes; i++) {
977 int v_shift = (i == 1 || i == 2) ? desc->log2_chroma_h : 0;
978 int plane_size = (frame->height >> v_shift) * frame->linesize[i];
979
980 WRAP_PLANE(frame->buf[i], frame->data[i], plane_size);
981 }
982 } else {
983 int planar = av_sample_fmt_is_planar(frame->format);
984 planes = planar ? avctx->channels : 1;
985
986 if (planes > FF_ARRAY_ELEMS(frame->buf)) {
987 frame->nb_extended_buf = planes - FF_ARRAY_ELEMS(frame->buf);
988 frame->extended_buf = av_malloc_array(sizeof(*frame->extended_buf),
989 frame->nb_extended_buf);
990 if (!frame->extended_buf) {
991 ret = AVERROR(ENOMEM);
992 goto fail;
993 }
994 }
995
996 for (i = 0; i < FFMIN(planes, FF_ARRAY_ELEMS(frame->buf)); i++)
997 WRAP_PLANE(frame->buf[i], frame->extended_data[i], frame->linesize[0]);
998
999 for (i = 0; i < frame->nb_extended_buf; i++)
1000 WRAP_PLANE(frame->extended_buf[i],
1001 frame->extended_data[i + FF_ARRAY_ELEMS(frame->buf)],
1002 frame->linesize[0]);
1003 }
1004
1005 av_buffer_unref(&dummy_buf);
1006
1007end0:
1008 frame->width = avctx->width;
1009 frame->height = avctx->height;
1010
1011 return 0;
1012
1013fail:
1014 avctx->release_buffer(avctx, frame);
1015 av_freep(&priv);
1016 av_buffer_unref(&dummy_buf);
1017 return ret;
1018 }
1019FF_ENABLE_DEPRECATION_WARNINGS
1020#endif
1021
1022 ret = avctx->get_buffer2(avctx, frame, flags);
1023
1024end:
1025 if (avctx->codec_type == AVMEDIA_TYPE_VIDEO && !override_dimensions) {
1026 frame->width = avctx->width;
1027 frame->height = avctx->height;
1028 }
1029
1030 return ret;
1031}
1032
1033int ff_get_buffer(AVCodecContext *avctx, AVFrame *frame, int flags)
1034{
1035 int ret = get_buffer_internal(avctx, frame, flags);
1036 if (ret < 0)
1037 av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
1038 return ret;
1039}
1040
1041static int reget_buffer_internal(AVCodecContext *avctx, AVFrame *frame)
1042{
1043 AVFrame *tmp;
1044 int ret;
1045
1046 av_assert0(avctx->codec_type == AVMEDIA_TYPE_VIDEO);
1047
1048 if (frame->data[0] && (frame->width != avctx->width || frame->height != avctx->height || frame->format != avctx->pix_fmt)) {
1049 av_log(avctx, AV_LOG_WARNING, "Picture changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s in reget buffer()\n",
1050 frame->width, frame->height, av_get_pix_fmt_name(frame->format), avctx->width, avctx->height, av_get_pix_fmt_name(avctx->pix_fmt));
1051 av_frame_unref(frame);
1052 }
1053
1054 ff_init_buffer_info(avctx, frame);
1055
1056 if (!frame->data[0])
1057 return ff_get_buffer(avctx, frame, AV_GET_BUFFER_FLAG_REF);
1058
1059 if (av_frame_is_writable(frame))
1060 return ff_decode_frame_props(avctx, frame);
1061
1062 tmp = av_frame_alloc();
1063 if (!tmp)
1064 return AVERROR(ENOMEM);
1065
1066 av_frame_move_ref(tmp, frame);
1067
1068 ret = ff_get_buffer(avctx, frame, AV_GET_BUFFER_FLAG_REF);
1069 if (ret < 0) {
1070 av_frame_free(&tmp);
1071 return ret;
1072 }
1073
1074 av_frame_copy(frame, tmp);
1075 av_frame_free(&tmp);
1076
1077 return 0;
1078}
1079
1080int ff_reget_buffer(AVCodecContext *avctx, AVFrame *frame)
1081{
1082 int ret = reget_buffer_internal(avctx, frame);
1083 if (ret < 0)
1084 av_log(avctx, AV_LOG_ERROR, "reget_buffer() failed\n");
1085 return ret;
1086}
1087
1088#if FF_API_GET_BUFFER
1089void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic)
1090{
1091 av_assert0(s->codec_type == AVMEDIA_TYPE_VIDEO);
1092
1093 av_frame_unref(pic);
1094}
1095
1096int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic)
1097{
1098 av_assert0(0);
1099 return AVERROR_BUG;
1100}
1101#endif
1102
1103int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2), void *arg, int *ret, int count, int size)
1104{
1105 int i;
1106
1107 for (i = 0; i < count; i++) {
1108 int r = func(c, (char *)arg + i * size);
1109 if (ret)
1110 ret[i] = r;
1111 }
1112 return 0;
1113}
1114
1115int avcodec_default_execute2(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2, int jobnr, int threadnr), void *arg, int *ret, int count)
1116{
1117 int i;
1118
1119 for (i = 0; i < count; i++) {
1120 int r = func(c, arg, i, 0);
1121 if (ret)
1122 ret[i] = r;
1123 }
1124 return 0;
1125}
1126
1127enum AVPixelFormat avpriv_find_pix_fmt(const PixelFormatTag *tags,
1128 unsigned int fourcc)
1129{
1130 while (tags->pix_fmt >= 0) {
1131 if (tags->fourcc == fourcc)
1132 return tags->pix_fmt;
1133 tags++;
1134 }
1135 return AV_PIX_FMT_NONE;
1136}
1137
1138static int is_hwaccel_pix_fmt(enum AVPixelFormat pix_fmt)
1139{
1140 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
1141 return desc->flags & AV_PIX_FMT_FLAG_HWACCEL;
1142}
1143
1144enum AVPixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum AVPixelFormat *fmt)
1145{
1146 while (*fmt != AV_PIX_FMT_NONE && is_hwaccel_pix_fmt(*fmt))
1147 ++fmt;
1148 return fmt[0];
1149}
1150
1151static AVHWAccel *find_hwaccel(enum AVCodecID codec_id,
1152 enum AVPixelFormat pix_fmt)
1153{
1154 AVHWAccel *hwaccel = NULL;
1155
1156 while ((hwaccel = av_hwaccel_next(hwaccel)))
1157 if (hwaccel->id == codec_id
1158 && hwaccel->pix_fmt == pix_fmt)
1159 return hwaccel;
1160 return NULL;
1161}
1162
1163
1164int ff_get_format(AVCodecContext *avctx, const enum AVPixelFormat *fmt)
1165{
1166 const AVPixFmtDescriptor *desc;
1167 enum AVPixelFormat ret = avctx->get_format(avctx, fmt);
1168
1169 desc = av_pix_fmt_desc_get(ret);
1170 if (!desc)
1171 return AV_PIX_FMT_NONE;
1172
1173 if (avctx->hwaccel && avctx->hwaccel->uninit)
1174 avctx->hwaccel->uninit(avctx);
1175 av_freep(&avctx->internal->hwaccel_priv_data);
1176 avctx->hwaccel = NULL;
1177
1178 if (desc->flags & AV_PIX_FMT_FLAG_HWACCEL &&
1179 !(avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU)) {
1180 AVHWAccel *hwaccel;
1181 int err;
1182
1183 hwaccel = find_hwaccel(avctx->codec_id, ret);
1184 if (!hwaccel) {
1185 av_log(avctx, AV_LOG_ERROR,
1186 "Could not find an AVHWAccel for the pixel format: %s",
1187 desc->name);
1188 return AV_PIX_FMT_NONE;
1189 }
1190
1191 if (hwaccel->priv_data_size) {
1192 avctx->internal->hwaccel_priv_data = av_mallocz(hwaccel->priv_data_size);
1193 if (!avctx->internal->hwaccel_priv_data)
1194 return AV_PIX_FMT_NONE;
1195 }
1196
1197 if (hwaccel->init) {
1198 err = hwaccel->init(avctx);
1199 if (err < 0) {
1200 av_freep(&avctx->internal->hwaccel_priv_data);
1201 return AV_PIX_FMT_NONE;
1202 }
1203 }
1204 avctx->hwaccel = hwaccel;
1205 }
1206
1207 return ret;
1208}
1209
1210#if FF_API_AVFRAME_LAVC
1211void avcodec_get_frame_defaults(AVFrame *frame)
1212{
1213#if LIBAVCODEC_VERSION_MAJOR >= 55
1214 // extended_data should explicitly be freed when needed, this code is unsafe currently
1215 // also this is not compatible to the <55 ABI/API
1216 if (frame->extended_data != frame->data && 0)
1217 av_freep(&frame->extended_data);
1218#endif
1219
1220 memset(frame, 0, sizeof(AVFrame));
1221 av_frame_unref(frame);
1222}
1223
1224AVFrame *avcodec_alloc_frame(void)
1225{
1226 return av_frame_alloc();
1227}
1228
1229void avcodec_free_frame(AVFrame **frame)
1230{
1231 av_frame_free(frame);
1232}
1233#endif
1234
1235MAKE_ACCESSORS(AVCodecContext, codec, AVRational, pkt_timebase)
1236MAKE_ACCESSORS(AVCodecContext, codec, const AVCodecDescriptor *, codec_descriptor)
1237MAKE_ACCESSORS(AVCodecContext, codec, int, lowres)
1238MAKE_ACCESSORS(AVCodecContext, codec, int, seek_preroll)
1239MAKE_ACCESSORS(AVCodecContext, codec, uint16_t*, chroma_intra_matrix)
1240
1241int av_codec_get_max_lowres(const AVCodec *codec)
1242{
1243 return codec->max_lowres;
1244}
1245
1246static void avcodec_get_subtitle_defaults(AVSubtitle *sub)
1247{
1248 memset(sub, 0, sizeof(*sub));
1249 sub->pts = AV_NOPTS_VALUE;
1250}
1251
1252static int get_bit_rate(AVCodecContext *ctx)
1253{
1254 int bit_rate;
1255 int bits_per_sample;
1256
1257 switch (ctx->codec_type) {
1258 case AVMEDIA_TYPE_VIDEO:
1259 case AVMEDIA_TYPE_DATA:
1260 case AVMEDIA_TYPE_SUBTITLE:
1261 case AVMEDIA_TYPE_ATTACHMENT:
1262 bit_rate = ctx->bit_rate;
1263 break;
1264 case AVMEDIA_TYPE_AUDIO:
1265 bits_per_sample = av_get_bits_per_sample(ctx->codec_id);
1266 bit_rate = bits_per_sample ? ctx->sample_rate * ctx->channels * bits_per_sample : ctx->bit_rate;
1267 break;
1268 default:
1269 bit_rate = 0;
1270 break;
1271 }
1272 return bit_rate;
1273}
1274
1275int attribute_align_arg ff_codec_open2_recursive(AVCodecContext *avctx, const AVCodec *codec, AVDictionary **options)
1276{
1277 int ret = 0;
1278
1279 ff_unlock_avcodec();
1280
1281 ret = avcodec_open2(avctx, codec, options);
1282
1283 ff_lock_avcodec(avctx);
1284 return ret;
1285}
1286
1287int attribute_align_arg avcodec_open2(AVCodecContext *avctx, const AVCodec *codec, AVDictionary **options)
1288{
1289 int ret = 0;
1290 AVDictionary *tmp = NULL;
1291
1292 if (avcodec_is_open(avctx))
1293 return 0;
1294
1295 if ((!codec && !avctx->codec)) {
1296 av_log(avctx, AV_LOG_ERROR, "No codec provided to avcodec_open2()\n");
1297 return AVERROR(EINVAL);
1298 }
1299 if ((codec && avctx->codec && codec != avctx->codec)) {
1300 av_log(avctx, AV_LOG_ERROR, "This AVCodecContext was allocated for %s, "
1301 "but %s passed to avcodec_open2()\n", avctx->codec->name, codec->name);
1302 return AVERROR(EINVAL);
1303 }
1304 if (!codec)
1305 codec = avctx->codec;
1306
1307 if (avctx->extradata_size < 0 || avctx->extradata_size >= FF_MAX_EXTRADATA_SIZE)
1308 return AVERROR(EINVAL);
1309
1310 if (options)
1311 av_dict_copy(&tmp, *options, 0);
1312
1313 ret = ff_lock_avcodec(avctx);
1314 if (ret < 0)
1315 return ret;
1316
1317 avctx->internal = av_mallocz(sizeof(AVCodecInternal));
1318 if (!avctx->internal) {
1319 ret = AVERROR(ENOMEM);
1320 goto end;
1321 }
1322
1323 avctx->internal->pool = av_mallocz(sizeof(*avctx->internal->pool));
1324 if (!avctx->internal->pool) {
1325 ret = AVERROR(ENOMEM);
1326 goto free_and_end;
1327 }
1328
1329 avctx->internal->to_free = av_frame_alloc();
1330 if (!avctx->internal->to_free) {
1331 ret = AVERROR(ENOMEM);
1332 goto free_and_end;
1333 }
1334
1335 if (codec->priv_data_size > 0) {
1336 if (!avctx->priv_data) {
1337 avctx->priv_data = av_mallocz(codec->priv_data_size);
1338 if (!avctx->priv_data) {
1339 ret = AVERROR(ENOMEM);
1340 goto end;
1341 }
1342 if (codec->priv_class) {
1343 *(const AVClass **)avctx->priv_data = codec->priv_class;
1344 av_opt_set_defaults(avctx->priv_data);
1345 }
1346 }
1347 if (codec->priv_class && (ret = av_opt_set_dict(avctx->priv_data, &tmp)) < 0)
1348 goto free_and_end;
1349 } else {
1350 avctx->priv_data = NULL;
1351 }
1352 if ((ret = av_opt_set_dict(avctx, &tmp)) < 0)
1353 goto free_and_end;
1354
1355 // only call ff_set_dimensions() for non H.264/VP6F codecs so as not to overwrite previously setup dimensions
1356 if (!(avctx->coded_width && avctx->coded_height && avctx->width && avctx->height &&
1357 (avctx->codec_id == AV_CODEC_ID_H264 || avctx->codec_id == AV_CODEC_ID_VP6F))) {
1358 if (avctx->coded_width && avctx->coded_height)
1359 ret = ff_set_dimensions(avctx, avctx->coded_width, avctx->coded_height);
1360 else if (avctx->width && avctx->height)
1361 ret = ff_set_dimensions(avctx, avctx->width, avctx->height);
1362 if (ret < 0)
1363 goto free_and_end;
1364 }
1365
1366 if ((avctx->coded_width || avctx->coded_height || avctx->width || avctx->height)
1367 && ( av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx) < 0
1368 || av_image_check_size(avctx->width, avctx->height, 0, avctx) < 0)) {
1369 av_log(avctx, AV_LOG_WARNING, "Ignoring invalid width/height values\n");
1370 ff_set_dimensions(avctx, 0, 0);
1371 }
1372
1373 if (avctx->width > 0 && avctx->height > 0) {
1374 if (av_image_check_sar(avctx->width, avctx->height,
1375 avctx->sample_aspect_ratio) < 0) {
1376 av_log(avctx, AV_LOG_WARNING, "ignoring invalid SAR: %u/%u\n",
1377 avctx->sample_aspect_ratio.num,
1378 avctx->sample_aspect_ratio.den);
1379 avctx->sample_aspect_ratio = (AVRational){ 0, 1 };
1380 }
1381 }
1382
1383 /* if the decoder init function was already called previously,
1384 * free the already allocated subtitle_header before overwriting it */
1385 if (av_codec_is_decoder(codec))
1386 av_freep(&avctx->subtitle_header);
1387
1388 if (avctx->channels > FF_SANE_NB_CHANNELS) {
1389 ret = AVERROR(EINVAL);
1390 goto free_and_end;
1391 }
1392
1393 avctx->codec = codec;
1394 if ((avctx->codec_type == AVMEDIA_TYPE_UNKNOWN || avctx->codec_type == codec->type) &&
1395 avctx->codec_id == AV_CODEC_ID_NONE) {
1396 avctx->codec_type = codec->type;
1397 avctx->codec_id = codec->id;
1398 }
1399 if (avctx->codec_id != codec->id || (avctx->codec_type != codec->type
1400 && avctx->codec_type != AVMEDIA_TYPE_ATTACHMENT)) {
1401 av_log(avctx, AV_LOG_ERROR, "Codec type or id mismatches\n");
1402 ret = AVERROR(EINVAL);
1403 goto free_and_end;
1404 }
1405 avctx->frame_number = 0;
1406 avctx->codec_descriptor = avcodec_descriptor_get(avctx->codec_id);
1407
1408 if (avctx->codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
1409 avctx->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
1410 const char *codec_string = av_codec_is_encoder(codec) ? "encoder" : "decoder";
1411 AVCodec *codec2;
1412 av_log(avctx, AV_LOG_ERROR,
1413 "The %s '%s' is experimental but experimental codecs are not enabled, "
1414 "add '-strict %d' if you want to use it.\n",
1415 codec_string, codec->name, FF_COMPLIANCE_EXPERIMENTAL);
1416 codec2 = av_codec_is_encoder(codec) ? avcodec_find_encoder(codec->id) : avcodec_find_decoder(codec->id);
1417 if (!(codec2->capabilities & CODEC_CAP_EXPERIMENTAL))
1418 av_log(avctx, AV_LOG_ERROR, "Alternatively use the non experimental %s '%s'.\n",
1419 codec_string, codec2->name);
1420 ret = AVERROR_EXPERIMENTAL;
1421 goto free_and_end;
1422 }
1423
1424 if (avctx->codec_type == AVMEDIA_TYPE_AUDIO &&
1425 (!avctx->time_base.num || !avctx->time_base.den)) {
1426 avctx->time_base.num = 1;
1427 avctx->time_base.den = avctx->sample_rate;
1428 }
1429
1430 if (!HAVE_THREADS)
1431 av_log(avctx, AV_LOG_WARNING, "Warning: not compiled with thread support, using thread emulation\n");
1432
1433 if (CONFIG_FRAME_THREAD_ENCODER) {
1434 ff_unlock_avcodec(); //we will instanciate a few encoders thus kick the counter to prevent false detection of a problem
1435 ret = ff_frame_thread_encoder_init(avctx, options ? *options : NULL);
1436 ff_lock_avcodec(avctx);
1437 if (ret < 0)
1438 goto free_and_end;
1439 }
1440
1441 if (HAVE_THREADS
1442 && !(avctx->internal->frame_thread_encoder && (avctx->active_thread_type&FF_THREAD_FRAME))) {
1443 ret = ff_thread_init(avctx);
1444 if (ret < 0) {
1445 goto free_and_end;
1446 }
1447 }
1448 if (!HAVE_THREADS && !(codec->capabilities & CODEC_CAP_AUTO_THREADS))
1449 avctx->thread_count = 1;
1450
1451 if (avctx->codec->max_lowres < avctx->lowres || avctx->lowres < 0) {
1452 av_log(avctx, AV_LOG_ERROR, "The maximum value for lowres supported by the decoder is %d\n",
1453 avctx->codec->max_lowres);
1454 ret = AVERROR(EINVAL);
1455 goto free_and_end;
1456 }
1457
1458#if FF_API_VISMV
1459 if (avctx->debug_mv)
1460 av_log(avctx, AV_LOG_WARNING, "The 'vismv' option is deprecated, "
1461 "see the codecview filter instead.\n");
1462#endif
1463
1464 if (av_codec_is_encoder(avctx->codec)) {
1465 int i;
1466 if (avctx->codec->sample_fmts) {
1467 for (i = 0; avctx->codec->sample_fmts[i] != AV_SAMPLE_FMT_NONE; i++) {
1468 if (avctx->sample_fmt == avctx->codec->sample_fmts[i])
1469 break;
1470 if (avctx->channels == 1 &&
1471 av_get_planar_sample_fmt(avctx->sample_fmt) ==
1472 av_get_planar_sample_fmt(avctx->codec->sample_fmts[i])) {
1473 avctx->sample_fmt = avctx->codec->sample_fmts[i];
1474 break;
1475 }
1476 }
1477 if (avctx->codec->sample_fmts[i] == AV_SAMPLE_FMT_NONE) {
1478 char buf[128];
1479 snprintf(buf, sizeof(buf), "%d", avctx->sample_fmt);
1480 av_log(avctx, AV_LOG_ERROR, "Specified sample format %s is invalid or not supported\n",
1481 (char *)av_x_if_null(av_get_sample_fmt_name(avctx->sample_fmt), buf));
1482 ret = AVERROR(EINVAL);
1483 goto free_and_end;
1484 }
1485 }
1486 if (avctx->codec->pix_fmts) {
1487 for (i = 0; avctx->codec->pix_fmts[i] != AV_PIX_FMT_NONE; i++)
1488 if (avctx->pix_fmt == avctx->codec->pix_fmts[i])
1489 break;
1490 if (avctx->codec->pix_fmts[i] == AV_PIX_FMT_NONE
1491 && !((avctx->codec_id == AV_CODEC_ID_MJPEG || avctx->codec_id == AV_CODEC_ID_LJPEG)
1492 && avctx->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL)) {
1493 char buf[128];
1494 snprintf(buf, sizeof(buf), "%d", avctx->pix_fmt);
1495 av_log(avctx, AV_LOG_ERROR, "Specified pixel format %s is invalid or not supported\n",
1496 (char *)av_x_if_null(av_get_pix_fmt_name(avctx->pix_fmt), buf));
1497 ret = AVERROR(EINVAL);
1498 goto free_and_end;
1499 }
1500 }
1501 if (avctx->codec->supported_samplerates) {
1502 for (i = 0; avctx->codec->supported_samplerates[i] != 0; i++)
1503 if (avctx->sample_rate == avctx->codec->supported_samplerates[i])
1504 break;
1505 if (avctx->codec->supported_samplerates[i] == 0) {
1506 av_log(avctx, AV_LOG_ERROR, "Specified sample rate %d is not supported\n",
1507 avctx->sample_rate);
1508 ret = AVERROR(EINVAL);
1509 goto free_and_end;
1510 }
1511 }
1512 if (avctx->codec->channel_layouts) {
1513 if (!avctx->channel_layout) {
1514 av_log(avctx, AV_LOG_WARNING, "Channel layout not specified\n");
1515 } else {
1516 for (i = 0; avctx->codec->channel_layouts[i] != 0; i++)
1517 if (avctx->channel_layout == avctx->codec->channel_layouts[i])
1518 break;
1519 if (avctx->codec->channel_layouts[i] == 0) {
1520 char buf[512];
1521 av_get_channel_layout_string(buf, sizeof(buf), -1, avctx->channel_layout);
1522 av_log(avctx, AV_LOG_ERROR, "Specified channel layout '%s' is not supported\n", buf);
1523 ret = AVERROR(EINVAL);
1524 goto free_and_end;
1525 }
1526 }
1527 }
1528 if (avctx->channel_layout && avctx->channels) {
1529 int channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
1530 if (channels != avctx->channels) {
1531 char buf[512];
1532 av_get_channel_layout_string(buf, sizeof(buf), -1, avctx->channel_layout);
1533 av_log(avctx, AV_LOG_ERROR,
1534 "Channel layout '%s' with %d channels does not match number of specified channels %d\n",
1535 buf, channels, avctx->channels);
1536 ret = AVERROR(EINVAL);
1537 goto free_and_end;
1538 }
1539 } else if (avctx->channel_layout) {
1540 avctx->channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
1541 }
1542 if(avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
1543 if (avctx->width <= 0 || avctx->height <= 0) {
1544 av_log(avctx, AV_LOG_ERROR, "dimensions not set\n");
1545 ret = AVERROR(EINVAL);
1546 goto free_and_end;
1547 }
1548 }
1549 if ( (avctx->codec_type == AVMEDIA_TYPE_VIDEO || avctx->codec_type == AVMEDIA_TYPE_AUDIO)
1550 && avctx->bit_rate>0 && avctx->bit_rate<1000) {
1551 av_log(avctx, AV_LOG_WARNING, "Bitrate %d is extremely low, maybe you mean %dk\n", avctx->bit_rate, avctx->bit_rate);
1552 }
1553
1554 if (!avctx->rc_initial_buffer_occupancy)
1555 avctx->rc_initial_buffer_occupancy = avctx->rc_buffer_size * 3 / 4;
1556 }
1557
1558 avctx->pts_correction_num_faulty_pts =
1559 avctx->pts_correction_num_faulty_dts = 0;
1560 avctx->pts_correction_last_pts =
1561 avctx->pts_correction_last_dts = INT64_MIN;
1562
1563 if ( avctx->codec->init && (!(avctx->active_thread_type&FF_THREAD_FRAME)
1564 || avctx->internal->frame_thread_encoder)) {
1565 ret = avctx->codec->init(avctx);
1566 if (ret < 0) {
1567 goto free_and_end;
1568 }
1569 }
1570
1571 ret=0;
1572
1573 if (av_codec_is_decoder(avctx->codec)) {
1574 if (!avctx->bit_rate)
1575 avctx->bit_rate = get_bit_rate(avctx);
1576 /* validate channel layout from the decoder */
1577 if (avctx->channel_layout) {
1578 int channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
1579 if (!avctx->channels)
1580 avctx->channels = channels;
1581 else if (channels != avctx->channels) {
1582 char buf[512];
1583 av_get_channel_layout_string(buf, sizeof(buf), -1, avctx->channel_layout);
1584 av_log(avctx, AV_LOG_WARNING,
1585 "Channel layout '%s' with %d channels does not match specified number of channels %d: "
1586 "ignoring specified channel layout\n",
1587 buf, channels, avctx->channels);
1588 avctx->channel_layout = 0;
1589 }
1590 }
1591 if (avctx->channels && avctx->channels < 0 ||
1592 avctx->channels > FF_SANE_NB_CHANNELS) {
1593 ret = AVERROR(EINVAL);
1594 goto free_and_end;
1595 }
1596 if (avctx->sub_charenc) {
1597 if (avctx->codec_type != AVMEDIA_TYPE_SUBTITLE) {
1598 av_log(avctx, AV_LOG_ERROR, "Character encoding is only "
1599 "supported with subtitles codecs\n");
1600 ret = AVERROR(EINVAL);
1601 goto free_and_end;
1602 } else if (avctx->codec_descriptor->props & AV_CODEC_PROP_BITMAP_SUB) {
1603 av_log(avctx, AV_LOG_WARNING, "Codec '%s' is bitmap-based, "
1604 "subtitles character encoding will be ignored\n",
1605 avctx->codec_descriptor->name);
1606 avctx->sub_charenc_mode = FF_SUB_CHARENC_MODE_DO_NOTHING;
1607 } else {
1608 /* input character encoding is set for a text based subtitle
1609 * codec at this point */
1610 if (avctx->sub_charenc_mode == FF_SUB_CHARENC_MODE_AUTOMATIC)
1611 avctx->sub_charenc_mode = FF_SUB_CHARENC_MODE_PRE_DECODER;
1612
1613 if (avctx->sub_charenc_mode == FF_SUB_CHARENC_MODE_PRE_DECODER) {
1614#if CONFIG_ICONV
1615 iconv_t cd = iconv_open("UTF-8", avctx->sub_charenc);
1616 if (cd == (iconv_t)-1) {
1617 av_log(avctx, AV_LOG_ERROR, "Unable to open iconv context "
1618 "with input character encoding \"%s\"\n", avctx->sub_charenc);
1619 ret = AVERROR(errno);
1620 goto free_and_end;
1621 }
1622 iconv_close(cd);
1623#else
1624 av_log(avctx, AV_LOG_ERROR, "Character encoding subtitles "
1625 "conversion needs a libavcodec built with iconv support "
1626 "for this codec\n");
1627 ret = AVERROR(ENOSYS);
1628 goto free_and_end;
1629#endif
1630 }
1631 }
1632 }
1633 }
1634end:
1635 ff_unlock_avcodec();
1636 if (options) {
1637 av_dict_free(options);
1638 *options = tmp;
1639 }
1640
1641 return ret;
1642free_and_end:
1643 av_dict_free(&tmp);
1644 av_freep(&avctx->priv_data);
1645 if (avctx->internal) {
1646 av_frame_free(&avctx->internal->to_free);
1647 av_freep(&avctx->internal->pool);
1648 }
1649 av_freep(&avctx->internal);
1650 avctx->codec = NULL;
1651 goto end;
1652}
1653
1654int ff_alloc_packet2(AVCodecContext *avctx, AVPacket *avpkt, int64_t size)
1655{
1656 if (avpkt->size < 0) {
1657 av_log(avctx, AV_LOG_ERROR, "Invalid negative user packet size %d\n", avpkt->size);
1658 return AVERROR(EINVAL);
1659 }
1660 if (size < 0 || size > INT_MAX - FF_INPUT_BUFFER_PADDING_SIZE) {
1661 av_log(avctx, AV_LOG_ERROR, "Invalid minimum required packet size %"PRId64" (max allowed is %d)\n",
1662 size, INT_MAX - FF_INPUT_BUFFER_PADDING_SIZE);
1663 return AVERROR(EINVAL);
1664 }
1665
1666 if (avctx) {
1667 av_assert0(!avpkt->data || avpkt->data != avctx->internal->byte_buffer);
1668 if (!avpkt->data || avpkt->size < size) {
1669 av_fast_padded_malloc(&avctx->internal->byte_buffer, &avctx->internal->byte_buffer_size, size);
1670 avpkt->data = avctx->internal->byte_buffer;
1671 avpkt->size = avctx->internal->byte_buffer_size;
1672#if FF_API_DESTRUCT_PACKET
1673FF_DISABLE_DEPRECATION_WARNINGS
1674 avpkt->destruct = NULL;
1675FF_ENABLE_DEPRECATION_WARNINGS
1676#endif
1677 }
1678 }
1679
1680 if (avpkt->data) {
1681 AVBufferRef *buf = avpkt->buf;
1682#if FF_API_DESTRUCT_PACKET
1683FF_DISABLE_DEPRECATION_WARNINGS
1684 void *destruct = avpkt->destruct;
1685FF_ENABLE_DEPRECATION_WARNINGS
1686#endif
1687
1688 if (avpkt->size < size) {
1689 av_log(avctx, AV_LOG_ERROR, "User packet is too small (%d < %"PRId64")\n", avpkt->size, size);
1690 return AVERROR(EINVAL);
1691 }
1692
1693 av_init_packet(avpkt);
1694#if FF_API_DESTRUCT_PACKET
1695FF_DISABLE_DEPRECATION_WARNINGS
1696 avpkt->destruct = destruct;
1697FF_ENABLE_DEPRECATION_WARNINGS
1698#endif
1699 avpkt->buf = buf;
1700 avpkt->size = size;
1701 return 0;
1702 } else {
1703 int ret = av_new_packet(avpkt, size);
1704 if (ret < 0)
1705 av_log(avctx, AV_LOG_ERROR, "Failed to allocate packet of size %"PRId64"\n", size);
1706 return ret;
1707 }
1708}
1709
1710int ff_alloc_packet(AVPacket *avpkt, int size)
1711{
1712 return ff_alloc_packet2(NULL, avpkt, size);
1713}
1714
1715/**
1716 * Pad last frame with silence.
1717 */
1718static int pad_last_frame(AVCodecContext *s, AVFrame **dst, const AVFrame *src)
1719{
1720 AVFrame *frame = NULL;
1721 int ret;
1722
1723 if (!(frame = av_frame_alloc()))
1724 return AVERROR(ENOMEM);
1725
1726 frame->format = src->format;
1727 frame->channel_layout = src->channel_layout;
1728 av_frame_set_channels(frame, av_frame_get_channels(src));
1729 frame->nb_samples = s->frame_size;
1730 ret = av_frame_get_buffer(frame, 32);
1731 if (ret < 0)
1732 goto fail;
1733
1734 ret = av_frame_copy_props(frame, src);
1735 if (ret < 0)
1736 goto fail;
1737
1738 if ((ret = av_samples_copy(frame->extended_data, src->extended_data, 0, 0,
1739 src->nb_samples, s->channels, s->sample_fmt)) < 0)
1740 goto fail;
1741 if ((ret = av_samples_set_silence(frame->extended_data, src->nb_samples,
1742 frame->nb_samples - src->nb_samples,
1743 s->channels, s->sample_fmt)) < 0)
1744 goto fail;
1745
1746 *dst = frame;
1747
1748 return 0;
1749
1750fail:
1751 av_frame_free(&frame);
1752 return ret;
1753}
1754
1755int attribute_align_arg avcodec_encode_audio2(AVCodecContext *avctx,
1756 AVPacket *avpkt,
1757 const AVFrame *frame,
1758 int *got_packet_ptr)
1759{
1760 AVFrame *extended_frame = NULL;
1761 AVFrame *padded_frame = NULL;
1762 int ret;
1763 AVPacket user_pkt = *avpkt;
1764 int needs_realloc = !user_pkt.data;
1765
1766 *got_packet_ptr = 0;
1767
1768 if (!(avctx->codec->capabilities & CODEC_CAP_DELAY) && !frame) {
1769 av_free_packet(avpkt);
1770 av_init_packet(avpkt);
1771 return 0;
1772 }
1773
1774 /* ensure that extended_data is properly set */
1775 if (frame && !frame->extended_data) {
1776 if (av_sample_fmt_is_planar(avctx->sample_fmt) &&
1777 avctx->channels > AV_NUM_DATA_POINTERS) {
1778 av_log(avctx, AV_LOG_ERROR, "Encoding to a planar sample format, "
1779 "with more than %d channels, but extended_data is not set.\n",
1780 AV_NUM_DATA_POINTERS);
1781 return AVERROR(EINVAL);
1782 }
1783 av_log(avctx, AV_LOG_WARNING, "extended_data is not set.\n");
1784
1785 extended_frame = av_frame_alloc();
1786 if (!extended_frame)
1787 return AVERROR(ENOMEM);
1788
1789 memcpy(extended_frame, frame, sizeof(AVFrame));
1790 extended_frame->extended_data = extended_frame->data;
1791 frame = extended_frame;
1792 }
1793
1794 /* check for valid frame size */
1795 if (frame) {
1796 if (avctx->codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME) {
1797 if (frame->nb_samples > avctx->frame_size) {
1798 av_log(avctx, AV_LOG_ERROR, "more samples than frame size (avcodec_encode_audio2)\n");
1799 ret = AVERROR(EINVAL);
1800 goto end;
1801 }
1802 } else if (!(avctx->codec->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE)) {
1803 if (frame->nb_samples < avctx->frame_size &&
1804 !avctx->internal->last_audio_frame) {
1805 ret = pad_last_frame(avctx, &padded_frame, frame);
1806 if (ret < 0)
1807 goto end;
1808
1809 frame = padded_frame;
1810 avctx->internal->last_audio_frame = 1;
1811 }
1812
1813 if (frame->nb_samples != avctx->frame_size) {
1814 av_log(avctx, AV_LOG_ERROR, "nb_samples (%d) != frame_size (%d) (avcodec_encode_audio2)\n", frame->nb_samples, avctx->frame_size);
1815 ret = AVERROR(EINVAL);
1816 goto end;
1817 }
1818 }
1819 }
1820
1821 ret = avctx->codec->encode2(avctx, avpkt, frame, got_packet_ptr);
1822 if (!ret) {
1823 if (*got_packet_ptr) {
1824 if (!(avctx->codec->capabilities & CODEC_CAP_DELAY)) {
1825 if (avpkt->pts == AV_NOPTS_VALUE)
1826 avpkt->pts = frame->pts;
1827 if (!avpkt->duration)
1828 avpkt->duration = ff_samples_to_time_base(avctx,
1829 frame->nb_samples);
1830 }
1831 avpkt->dts = avpkt->pts;
1832 } else {
1833 avpkt->size = 0;
1834 }
1835 }
1836 if (avpkt->data && avpkt->data == avctx->internal->byte_buffer) {
1837 needs_realloc = 0;
1838 if (user_pkt.data) {
1839 if (user_pkt.size >= avpkt->size) {
1840 memcpy(user_pkt.data, avpkt->data, avpkt->size);
1841 } else {
1842 av_log(avctx, AV_LOG_ERROR, "Provided packet is too small, needs to be %d\n", avpkt->size);
1843 avpkt->size = user_pkt.size;
1844 ret = -1;
1845 }
1846 avpkt->buf = user_pkt.buf;
1847 avpkt->data = user_pkt.data;
1848#if FF_API_DESTRUCT_PACKET
1849FF_DISABLE_DEPRECATION_WARNINGS
1850 avpkt->destruct = user_pkt.destruct;
1851FF_ENABLE_DEPRECATION_WARNINGS
1852#endif
1853 } else {
1854 if (av_dup_packet(avpkt) < 0) {
1855 ret = AVERROR(ENOMEM);
1856 }
1857 }
1858 }
1859
1860 if (!ret) {
1861 if (needs_realloc && avpkt->data) {
1862 ret = av_buffer_realloc(&avpkt->buf, avpkt->size + FF_INPUT_BUFFER_PADDING_SIZE);
1863 if (ret >= 0)
1864 avpkt->data = avpkt->buf->data;
1865 }
1866
1867 avctx->frame_number++;
1868 }
1869
1870 if (ret < 0 || !*got_packet_ptr) {
1871 av_free_packet(avpkt);
1872 av_init_packet(avpkt);
1873 goto end;
1874 }
1875
1876 /* NOTE: if we add any audio encoders which output non-keyframe packets,
1877 * this needs to be moved to the encoders, but for now we can do it
1878 * here to simplify things */
1879 avpkt->flags |= AV_PKT_FLAG_KEY;
1880
1881end:
1882 av_frame_free(&padded_frame);
1883 av_free(extended_frame);
1884
1885 return ret;
1886}
1887
1888#if FF_API_OLD_ENCODE_AUDIO
1889int attribute_align_arg avcodec_encode_audio(AVCodecContext *avctx,
1890 uint8_t *buf, int buf_size,
1891 const short *samples)
1892{
1893 AVPacket pkt;
1894 AVFrame *frame;
1895 int ret, samples_size, got_packet;
1896
1897 av_init_packet(&pkt);
1898 pkt.data = buf;
1899 pkt.size = buf_size;
1900
1901 if (samples) {
1902 frame = av_frame_alloc();
1903 if (!frame)
1904 return AVERROR(ENOMEM);
1905
1906 if (avctx->frame_size) {
1907 frame->nb_samples = avctx->frame_size;
1908 } else {
1909 /* if frame_size is not set, the number of samples must be
1910 * calculated from the buffer size */
1911 int64_t nb_samples;
1912 if (!av_get_bits_per_sample(avctx->codec_id)) {
1913 av_log(avctx, AV_LOG_ERROR, "avcodec_encode_audio() does not "
1914 "support this codec\n");
1915 av_frame_free(&frame);
1916 return AVERROR(EINVAL);
1917 }
1918 nb_samples = (int64_t)buf_size * 8 /
1919 (av_get_bits_per_sample(avctx->codec_id) *
1920 avctx->channels);
1921 if (nb_samples >= INT_MAX) {
1922 av_frame_free(&frame);
1923 return AVERROR(EINVAL);
1924 }
1925 frame->nb_samples = nb_samples;
1926 }
1927
1928 /* it is assumed that the samples buffer is large enough based on the
1929 * relevant parameters */
1930 samples_size = av_samples_get_buffer_size(NULL, avctx->channels,
1931 frame->nb_samples,
1932 avctx->sample_fmt, 1);
1933 if ((ret = avcodec_fill_audio_frame(frame, avctx->channels,
1934 avctx->sample_fmt,
1935 (const uint8_t *)samples,
1936 samples_size, 1)) < 0) {
1937 av_frame_free(&frame);
1938 return ret;
1939 }
1940
1941 /* fabricate frame pts from sample count.
1942 * this is needed because the avcodec_encode_audio() API does not have
1943 * a way for the user to provide pts */
1944 if (avctx->sample_rate && avctx->time_base.num)
1945 frame->pts = ff_samples_to_time_base(avctx,
1946 avctx->internal->sample_count);
1947 else
1948 frame->pts = AV_NOPTS_VALUE;
1949 avctx->internal->sample_count += frame->nb_samples;
1950 } else {
1951 frame = NULL;
1952 }
1953
1954 got_packet = 0;
1955 ret = avcodec_encode_audio2(avctx, &pkt, frame, &got_packet);
1956 if (!ret && got_packet && avctx->coded_frame) {
1957 avctx->coded_frame->pts = pkt.pts;
1958 avctx->coded_frame->key_frame = !!(pkt.flags & AV_PKT_FLAG_KEY);
1959 }
1960 /* free any side data since we cannot return it */
1961 av_packet_free_side_data(&pkt);
1962
1963 if (frame && frame->extended_data != frame->data)
1964 av_freep(&frame->extended_data);
1965
1966 av_frame_free(&frame);
1967 return ret ? ret : pkt.size;
1968}
1969
1970#endif
1971
1972#if FF_API_OLD_ENCODE_VIDEO
1973int attribute_align_arg avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
1974 const AVFrame *pict)
1975{
1976 AVPacket pkt;
1977 int ret, got_packet = 0;
1978
1979 if (buf_size < FF_MIN_BUFFER_SIZE) {
1980 av_log(avctx, AV_LOG_ERROR, "buffer smaller than minimum size\n");
1981 return -1;
1982 }
1983
1984 av_init_packet(&pkt);
1985 pkt.data = buf;
1986 pkt.size = buf_size;
1987
1988 ret = avcodec_encode_video2(avctx, &pkt, pict, &got_packet);
1989 if (!ret && got_packet && avctx->coded_frame) {
1990 avctx->coded_frame->pts = pkt.pts;
1991 avctx->coded_frame->key_frame = !!(pkt.flags & AV_PKT_FLAG_KEY);
1992 }
1993
1994 /* free any side data since we cannot return it */
1995 if (pkt.side_data_elems > 0) {
1996 int i;
1997 for (i = 0; i < pkt.side_data_elems; i++)
1998 av_free(pkt.side_data[i].data);
1999 av_freep(&pkt.side_data);
2000 pkt.side_data_elems = 0;
2001 }
2002
2003 return ret ? ret : pkt.size;
2004}
2005
2006#endif
2007
2008int attribute_align_arg avcodec_encode_video2(AVCodecContext *avctx,
2009 AVPacket *avpkt,
2010 const AVFrame *frame,
2011 int *got_packet_ptr)
2012{
2013 int ret;
2014 AVPacket user_pkt = *avpkt;
2015 int needs_realloc = !user_pkt.data;
2016
2017 *got_packet_ptr = 0;
2018
2019 if(CONFIG_FRAME_THREAD_ENCODER &&
2020 avctx->internal->frame_thread_encoder && (avctx->active_thread_type&FF_THREAD_FRAME))
2021 return ff_thread_video_encode_frame(avctx, avpkt, frame, got_packet_ptr);
2022
2023 if ((avctx->flags&CODEC_FLAG_PASS1) && avctx->stats_out)
2024 avctx->stats_out[0] = '\0';
2025
2026 if (!(avctx->codec->capabilities & CODEC_CAP_DELAY) && !frame) {
2027 av_free_packet(avpkt);
2028 av_init_packet(avpkt);
2029 avpkt->size = 0;
2030 return 0;
2031 }
2032
2033 if (av_image_check_size(avctx->width, avctx->height, 0, avctx))
2034 return AVERROR(EINVAL);
2035
2036 av_assert0(avctx->codec->encode2);
2037
2038 ret = avctx->codec->encode2(avctx, avpkt, frame, got_packet_ptr);
2039 av_assert0(ret <= 0);
2040
2041 if (avpkt->data && avpkt->data == avctx->internal->byte_buffer) {
2042 needs_realloc = 0;
2043 if (user_pkt.data) {
2044 if (user_pkt.size >= avpkt->size) {
2045 memcpy(user_pkt.data, avpkt->data, avpkt->size);
2046 } else {
2047 av_log(avctx, AV_LOG_ERROR, "Provided packet is too small, needs to be %d\n", avpkt->size);
2048 avpkt->size = user_pkt.size;
2049 ret = -1;
2050 }
2051 avpkt->buf = user_pkt.buf;
2052 avpkt->data = user_pkt.data;
2053#if FF_API_DESTRUCT_PACKET
2054FF_DISABLE_DEPRECATION_WARNINGS
2055 avpkt->destruct = user_pkt.destruct;
2056FF_ENABLE_DEPRECATION_WARNINGS
2057#endif
2058 } else {
2059 if (av_dup_packet(avpkt) < 0) {
2060 ret = AVERROR(ENOMEM);
2061 }
2062 }
2063 }
2064
2065 if (!ret) {
2066 if (!*got_packet_ptr)
2067 avpkt->size = 0;
2068 else if (!(avctx->codec->capabilities & CODEC_CAP_DELAY))
2069 avpkt->pts = avpkt->dts = frame->pts;
2070
2071 if (needs_realloc && avpkt->data) {
2072 ret = av_buffer_realloc(&avpkt->buf, avpkt->size + FF_INPUT_BUFFER_PADDING_SIZE);
2073 if (ret >= 0)
2074 avpkt->data = avpkt->buf->data;
2075 }
2076
2077 avctx->frame_number++;
2078 }
2079
2080 if (ret < 0 || !*got_packet_ptr)
2081 av_free_packet(avpkt);
2082 else
2083 av_packet_merge_side_data(avpkt);
2084
2085 emms_c();
2086 return ret;
2087}
2088
2089int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size,
2090 const AVSubtitle *sub)
2091{
2092 int ret;
2093 if (sub->start_display_time) {
2094 av_log(avctx, AV_LOG_ERROR, "start_display_time must be 0.\n");
2095 return -1;
2096 }
2097
2098 ret = avctx->codec->encode_sub(avctx, buf, buf_size, sub);
2099 avctx->frame_number++;
2100 return ret;
2101}
2102
2103/**
2104 * Attempt to guess proper monotonic timestamps for decoded video frames
2105 * which might have incorrect times. Input timestamps may wrap around, in
2106 * which case the output will as well.
2107 *
2108 * @param pts the pts field of the decoded AVPacket, as passed through
2109 * AVFrame.pkt_pts
2110 * @param dts the dts field of the decoded AVPacket
2111 * @return one of the input values, may be AV_NOPTS_VALUE
2112 */
2113static int64_t guess_correct_pts(AVCodecContext *ctx,
2114 int64_t reordered_pts, int64_t dts)
2115{
2116 int64_t pts = AV_NOPTS_VALUE;
2117
2118 if (dts != AV_NOPTS_VALUE) {
2119 ctx->pts_correction_num_faulty_dts += dts <= ctx->pts_correction_last_dts;
2120 ctx->pts_correction_last_dts = dts;
2121 } else if (reordered_pts != AV_NOPTS_VALUE)
2122 ctx->pts_correction_last_dts = reordered_pts;
2123
2124 if (reordered_pts != AV_NOPTS_VALUE) {
2125 ctx->pts_correction_num_faulty_pts += reordered_pts <= ctx->pts_correction_last_pts;
2126 ctx->pts_correction_last_pts = reordered_pts;
2127 } else if(dts != AV_NOPTS_VALUE)
2128 ctx->pts_correction_last_pts = dts;
2129
2130 if ((ctx->pts_correction_num_faulty_pts<=ctx->pts_correction_num_faulty_dts || dts == AV_NOPTS_VALUE)
2131 && reordered_pts != AV_NOPTS_VALUE)
2132 pts = reordered_pts;
2133 else
2134 pts = dts;
2135
2136 return pts;
2137}
2138
2139static int apply_param_change(AVCodecContext *avctx, AVPacket *avpkt)
2140{
2141 int size = 0, ret;
2142 const uint8_t *data;
2143 uint32_t flags;
2144
2145 data = av_packet_get_side_data(avpkt, AV_PKT_DATA_PARAM_CHANGE, &size);
2146 if (!data)
2147 return 0;
2148
2149 if (!(avctx->codec->capabilities & CODEC_CAP_PARAM_CHANGE)) {
2150 av_log(avctx, AV_LOG_ERROR, "This decoder does not support parameter "
2151 "changes, but PARAM_CHANGE side data was sent to it.\n");
2152 return AVERROR(EINVAL);
2153 }
2154
2155 if (size < 4)
2156 goto fail;
2157
2158 flags = bytestream_get_le32(&data);
2159 size -= 4;
2160
2161 if (flags & AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_COUNT) {
2162 if (size < 4)
2163 goto fail;
2164 avctx->channels = bytestream_get_le32(&data);
2165 size -= 4;
2166 }
2167 if (flags & AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_LAYOUT) {
2168 if (size < 8)
2169 goto fail;
2170 avctx->channel_layout = bytestream_get_le64(&data);
2171 size -= 8;
2172 }
2173 if (flags & AV_SIDE_DATA_PARAM_CHANGE_SAMPLE_RATE) {
2174 if (size < 4)
2175 goto fail;
2176 avctx->sample_rate = bytestream_get_le32(&data);
2177 size -= 4;
2178 }
2179 if (flags & AV_SIDE_DATA_PARAM_CHANGE_DIMENSIONS) {
2180 if (size < 8)
2181 goto fail;
2182 avctx->width = bytestream_get_le32(&data);
2183 avctx->height = bytestream_get_le32(&data);
2184 size -= 8;
2185 ret = ff_set_dimensions(avctx, avctx->width, avctx->height);
2186 if (ret < 0)
2187 return ret;
2188 }
2189
2190 return 0;
2191fail:
2192 av_log(avctx, AV_LOG_ERROR, "PARAM_CHANGE side data too small.\n");
2193 return AVERROR_INVALIDDATA;
2194}
2195
2196static int add_metadata_from_side_data(AVCodecContext *avctx, AVFrame *frame)
2197{
2198 int size;
2199 const uint8_t *side_metadata;
2200
2201 AVDictionary **frame_md = avpriv_frame_get_metadatap(frame);
2202
2203 side_metadata = av_packet_get_side_data(avctx->internal->pkt,
2204 AV_PKT_DATA_STRINGS_METADATA, &size);
2205 return av_packet_unpack_dictionary(side_metadata, size, frame_md);
2206}
2207
2208static int unrefcount_frame(AVCodecInternal *avci, AVFrame *frame)
2209{
2210 int ret;
2211
2212 /* move the original frame to our backup */
2213 av_frame_unref(avci->to_free);
2214 av_frame_move_ref(avci->to_free, frame);
2215
2216 /* now copy everything except the AVBufferRefs back
2217 * note that we make a COPY of the side data, so calling av_frame_free() on
2218 * the caller's frame will work properly */
2219 ret = av_frame_copy_props(frame, avci->to_free);
2220 if (ret < 0)
2221 return ret;
2222
2223 memcpy(frame->data, avci->to_free->data, sizeof(frame->data));
2224 memcpy(frame->linesize, avci->to_free->linesize, sizeof(frame->linesize));
2225 if (avci->to_free->extended_data != avci->to_free->data) {
2226 int planes = av_frame_get_channels(avci->to_free);
2227 int size = planes * sizeof(*frame->extended_data);
2228
2229 if (!size) {
2230 av_frame_unref(frame);
2231 return AVERROR_BUG;
2232 }
2233
2234 frame->extended_data = av_malloc(size);
2235 if (!frame->extended_data) {
2236 av_frame_unref(frame);
2237 return AVERROR(ENOMEM);
2238 }
2239 memcpy(frame->extended_data, avci->to_free->extended_data,
2240 size);
2241 } else
2242 frame->extended_data = frame->data;
2243
2244 frame->format = avci->to_free->format;
2245 frame->width = avci->to_free->width;
2246 frame->height = avci->to_free->height;
2247 frame->channel_layout = avci->to_free->channel_layout;
2248 frame->nb_samples = avci->to_free->nb_samples;
2249 av_frame_set_channels(frame, av_frame_get_channels(avci->to_free));
2250
2251 return 0;
2252}
2253
2254int attribute_align_arg avcodec_decode_video2(AVCodecContext *avctx, AVFrame *picture,
2255 int *got_picture_ptr,
2256 const AVPacket *avpkt)
2257{
2258 AVCodecInternal *avci = avctx->internal;
2259 int ret;
2260 // copy to ensure we do not change avpkt
2261 AVPacket tmp = *avpkt;
2262
2263 if (!avctx->codec)
2264 return AVERROR(EINVAL);
2265 if (avctx->codec->type != AVMEDIA_TYPE_VIDEO) {
2266 av_log(avctx, AV_LOG_ERROR, "Invalid media type for video\n");
2267 return AVERROR(EINVAL);
2268 }
2269
2270 *got_picture_ptr = 0;
2271 if ((avctx->coded_width || avctx->coded_height) && av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx))
2272 return AVERROR(EINVAL);
2273
2274 av_frame_unref(picture);
2275
2276 if ((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size || (avctx->active_thread_type & FF_THREAD_FRAME)) {
2277 int did_split = av_packet_split_side_data(&tmp);
2278 ret = apply_param_change(avctx, &tmp);
2279 if (ret < 0) {
2280 av_log(avctx, AV_LOG_ERROR, "Error applying parameter changes.\n");
2281 if (avctx->err_recognition & AV_EF_EXPLODE)
2282 goto fail;
2283 }
2284
2285 avctx->internal->pkt = &tmp;
2286 if (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME)
2287 ret = ff_thread_decode_frame(avctx, picture, got_picture_ptr,
2288 &tmp);
2289 else {
2290 ret = avctx->codec->decode(avctx, picture, got_picture_ptr,
2291 &tmp);
2292 picture->pkt_dts = avpkt->dts;
2293
2294 if(!avctx->has_b_frames){
2295 av_frame_set_pkt_pos(picture, avpkt->pos);
2296 }
2297 //FIXME these should be under if(!avctx->has_b_frames)
2298 /* get_buffer is supposed to set frame parameters */
2299 if (!(avctx->codec->capabilities & CODEC_CAP_DR1)) {
2300 if (!picture->sample_aspect_ratio.num) picture->sample_aspect_ratio = avctx->sample_aspect_ratio;
2301 if (!picture->width) picture->width = avctx->width;
2302 if (!picture->height) picture->height = avctx->height;
2303 if (picture->format == AV_PIX_FMT_NONE) picture->format = avctx->pix_fmt;
2304 }
2305 }
2306 add_metadata_from_side_data(avctx, picture);
2307
2308fail:
2309 emms_c(); //needed to avoid an emms_c() call before every return;
2310
2311 avctx->internal->pkt = NULL;
2312 if (did_split) {
2313 av_packet_free_side_data(&tmp);
2314 if(ret == tmp.size)
2315 ret = avpkt->size;
2316 }
2317
2318 if (*got_picture_ptr) {
2319 if (!avctx->refcounted_frames) {
2320 int err = unrefcount_frame(avci, picture);
2321 if (err < 0)
2322 return err;
2323 }
2324
2325 avctx->frame_number++;
2326 av_frame_set_best_effort_timestamp(picture,
2327 guess_correct_pts(avctx,
2328 picture->pkt_pts,
2329 picture->pkt_dts));
2330 } else
2331 av_frame_unref(picture);
2332 } else
2333 ret = 0;
2334
2335 /* many decoders assign whole AVFrames, thus overwriting extended_data;
2336 * make sure it's set correctly */
2337 av_assert0(!picture->extended_data || picture->extended_data == picture->data);
2338
2339 return ret;
2340}
2341
2342#if FF_API_OLD_DECODE_AUDIO
2343int attribute_align_arg avcodec_decode_audio3(AVCodecContext *avctx, int16_t *samples,
2344 int *frame_size_ptr,
2345 AVPacket *avpkt)
2346{
2347 AVFrame *frame = av_frame_alloc();
2348 int ret, got_frame = 0;
2349
2350 if (!frame)
2351 return AVERROR(ENOMEM);
2352 if (avctx->get_buffer != avcodec_default_get_buffer) {
2353 av_log(avctx, AV_LOG_ERROR, "Custom get_buffer() for use with"
2354 "avcodec_decode_audio3() detected. Overriding with avcodec_default_get_buffer\n");
2355 av_log(avctx, AV_LOG_ERROR, "Please port your application to "
2356 "avcodec_decode_audio4()\n");
2357 avctx->get_buffer = avcodec_default_get_buffer;
2358 avctx->release_buffer = avcodec_default_release_buffer;
2359 }
2360
2361 ret = avcodec_decode_audio4(avctx, frame, &got_frame, avpkt);
2362
2363 if (ret >= 0 && got_frame) {
2364 int ch, plane_size;
2365 int planar = av_sample_fmt_is_planar(avctx->sample_fmt);
2366 int data_size = av_samples_get_buffer_size(&plane_size, avctx->channels,
2367 frame->nb_samples,
2368 avctx->sample_fmt, 1);
2369 if (*frame_size_ptr < data_size) {
2370 av_log(avctx, AV_LOG_ERROR, "output buffer size is too small for "
2371 "the current frame (%d < %d)\n", *frame_size_ptr, data_size);
2372 av_frame_free(&frame);
2373 return AVERROR(EINVAL);
2374 }
2375
2376 memcpy(samples, frame->extended_data[0], plane_size);
2377
2378 if (planar && avctx->channels > 1) {
2379 uint8_t *out = ((uint8_t *)samples) + plane_size;
2380 for (ch = 1; ch < avctx->channels; ch++) {
2381 memcpy(out, frame->extended_data[ch], plane_size);
2382 out += plane_size;
2383 }
2384 }
2385 *frame_size_ptr = data_size;
2386 } else {
2387 *frame_size_ptr = 0;
2388 }
2389 av_frame_free(&frame);
2390 return ret;
2391}
2392
2393#endif
2394
2395int attribute_align_arg avcodec_decode_audio4(AVCodecContext *avctx,
2396 AVFrame *frame,
2397 int *got_frame_ptr,
2398 const AVPacket *avpkt)
2399{
2400 AVCodecInternal *avci = avctx->internal;
2401 int ret = 0;
2402
2403 *got_frame_ptr = 0;
2404
2405 if (!avpkt->data && avpkt->size) {
2406 av_log(avctx, AV_LOG_ERROR, "invalid packet: NULL data, size != 0\n");
2407 return AVERROR(EINVAL);
2408 }
2409 if (!avctx->codec)
2410 return AVERROR(EINVAL);
2411 if (avctx->codec->type != AVMEDIA_TYPE_AUDIO) {
2412 av_log(avctx, AV_LOG_ERROR, "Invalid media type for audio\n");
2413 return AVERROR(EINVAL);
2414 }
2415
2416 av_frame_unref(frame);
2417
2418 if ((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size || (avctx->active_thread_type & FF_THREAD_FRAME)) {
2419 uint8_t *side;
2420 int side_size;
2421 uint32_t discard_padding = 0;
2422 // copy to ensure we do not change avpkt
2423 AVPacket tmp = *avpkt;
2424 int did_split = av_packet_split_side_data(&tmp);
2425 ret = apply_param_change(avctx, &tmp);
2426 if (ret < 0) {
2427 av_log(avctx, AV_LOG_ERROR, "Error applying parameter changes.\n");
2428 if (avctx->err_recognition & AV_EF_EXPLODE)
2429 goto fail;
2430 }
2431
2432 avctx->internal->pkt = &tmp;
2433 if (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME)
2434 ret = ff_thread_decode_frame(avctx, frame, got_frame_ptr, &tmp);
2435 else {
2436 ret = avctx->codec->decode(avctx, frame, got_frame_ptr, &tmp);
2437 frame->pkt_dts = avpkt->dts;
2438 }
2439 if (ret >= 0 && *got_frame_ptr) {
2440 add_metadata_from_side_data(avctx, frame);
2441 avctx->frame_number++;
2442 av_frame_set_best_effort_timestamp(frame,
2443 guess_correct_pts(avctx,
2444 frame->pkt_pts,
2445 frame->pkt_dts));
2446 if (frame->format == AV_SAMPLE_FMT_NONE)
2447 frame->format = avctx->sample_fmt;
2448 if (!frame->channel_layout)
2449 frame->channel_layout = avctx->channel_layout;
2450 if (!av_frame_get_channels(frame))
2451 av_frame_set_channels(frame, avctx->channels);
2452 if (!frame->sample_rate)
2453 frame->sample_rate = avctx->sample_rate;
2454 }
2455
2456 side= av_packet_get_side_data(avctx->internal->pkt, AV_PKT_DATA_SKIP_SAMPLES, &side_size);
2457 if(side && side_size>=10) {
2458 avctx->internal->skip_samples = AV_RL32(side);
2459 av_log(avctx, AV_LOG_DEBUG, "skip %d samples due to side data\n",
2460 avctx->internal->skip_samples);
2461 discard_padding = AV_RL32(side + 4);
2462 }
2463 if (avctx->internal->skip_samples && *got_frame_ptr) {
2464 if(frame->nb_samples <= avctx->internal->skip_samples){
2465 *got_frame_ptr = 0;
2466 avctx->internal->skip_samples -= frame->nb_samples;
2467 av_log(avctx, AV_LOG_DEBUG, "skip whole frame, skip left: %d\n",
2468 avctx->internal->skip_samples);
2469 } else {
2470 av_samples_copy(frame->extended_data, frame->extended_data, 0, avctx->internal->skip_samples,
2471 frame->nb_samples - avctx->internal->skip_samples, avctx->channels, frame->format);
2472 if(avctx->pkt_timebase.num && avctx->sample_rate) {
2473 int64_t diff_ts = av_rescale_q(avctx->internal->skip_samples,
2474 (AVRational){1, avctx->sample_rate},
2475 avctx->pkt_timebase);
2476 if(frame->pkt_pts!=AV_NOPTS_VALUE)
2477 frame->pkt_pts += diff_ts;
2478 if(frame->pkt_dts!=AV_NOPTS_VALUE)
2479 frame->pkt_dts += diff_ts;
2480 if (av_frame_get_pkt_duration(frame) >= diff_ts)
2481 av_frame_set_pkt_duration(frame, av_frame_get_pkt_duration(frame) - diff_ts);
2482 } else {
2483 av_log(avctx, AV_LOG_WARNING, "Could not update timestamps for skipped samples.\n");
2484 }
2485 av_log(avctx, AV_LOG_DEBUG, "skip %d/%d samples\n",
2486 avctx->internal->skip_samples, frame->nb_samples);
2487 frame->nb_samples -= avctx->internal->skip_samples;
2488 avctx->internal->skip_samples = 0;
2489 }
2490 }
2491
2492 if (discard_padding > 0 && discard_padding <= frame->nb_samples && *got_frame_ptr) {
2493 if (discard_padding == frame->nb_samples) {
2494 *got_frame_ptr = 0;
2495 } else {
2496 if(avctx->pkt_timebase.num && avctx->sample_rate) {
2497 int64_t diff_ts = av_rescale_q(frame->nb_samples - discard_padding,
2498 (AVRational){1, avctx->sample_rate},
2499 avctx->pkt_timebase);
2500 if (av_frame_get_pkt_duration(frame) >= diff_ts)
2501 av_frame_set_pkt_duration(frame, av_frame_get_pkt_duration(frame) - diff_ts);
2502 } else {
2503 av_log(avctx, AV_LOG_WARNING, "Could not update timestamps for discarded samples.\n");
2504 }
2505 av_log(avctx, AV_LOG_DEBUG, "discard %d/%d samples\n",
2506 discard_padding, frame->nb_samples);
2507 frame->nb_samples -= discard_padding;
2508 }
2509 }
2510fail:
2511 avctx->internal->pkt = NULL;
2512 if (did_split) {
2513 av_packet_free_side_data(&tmp);
2514 if(ret == tmp.size)
2515 ret = avpkt->size;
2516 }
2517
2518 if (ret >= 0 && *got_frame_ptr) {
2519 if (!avctx->refcounted_frames) {
2520 int err = unrefcount_frame(avci, frame);
2521 if (err < 0)
2522 return err;
2523 }
2524 } else
2525 av_frame_unref(frame);
2526 }
2527
2528 return ret;
2529}
2530
2531#define UTF8_MAX_BYTES 4 /* 5 and 6 bytes sequences should not be used */
2532static int recode_subtitle(AVCodecContext *avctx,
2533 AVPacket *outpkt, const AVPacket *inpkt)
2534{
2535#if CONFIG_ICONV
2536 iconv_t cd = (iconv_t)-1;
2537 int ret = 0;
2538 char *inb, *outb;
2539 size_t inl, outl;
2540 AVPacket tmp;
2541#endif
2542
2543 if (avctx->sub_charenc_mode != FF_SUB_CHARENC_MODE_PRE_DECODER || inpkt->size == 0)
2544 return 0;
2545
2546#if CONFIG_ICONV
2547 cd = iconv_open("UTF-8", avctx->sub_charenc);
2548 av_assert0(cd != (iconv_t)-1);
2549
2550 inb = inpkt->data;
2551 inl = inpkt->size;
2552
2553 if (inl >= INT_MAX / UTF8_MAX_BYTES - FF_INPUT_BUFFER_PADDING_SIZE) {
2554 av_log(avctx, AV_LOG_ERROR, "Subtitles packet is too big for recoding\n");
2555 ret = AVERROR(ENOMEM);
2556 goto end;
2557 }
2558
2559 ret = av_new_packet(&tmp, inl * UTF8_MAX_BYTES);
2560 if (ret < 0)
2561 goto end;
2562 outpkt->buf = tmp.buf;
2563 outpkt->data = tmp.data;
2564 outpkt->size = tmp.size;
2565 outb = outpkt->data;
2566 outl = outpkt->size;
2567
2568 if (iconv(cd, &inb, &inl, &outb, &outl) == (size_t)-1 ||
2569 iconv(cd, NULL, NULL, &outb, &outl) == (size_t)-1 ||
2570 outl >= outpkt->size || inl != 0) {
2571 av_log(avctx, AV_LOG_ERROR, "Unable to recode subtitle event \"%s\" "
2572 "from %s to UTF-8\n", inpkt->data, avctx->sub_charenc);
2573 av_free_packet(&tmp);
2574 ret = AVERROR(errno);
2575 goto end;
2576 }
2577 outpkt->size -= outl;
2578 memset(outpkt->data + outpkt->size, 0, outl);
2579
2580end:
2581 if (cd != (iconv_t)-1)
2582 iconv_close(cd);
2583 return ret;
2584#else
2585 av_log(avctx, AV_LOG_ERROR, "requesting subtitles recoding without iconv");
2586 return AVERROR(EINVAL);
2587#endif
2588}
2589
2590static int utf8_check(const uint8_t *str)
2591{
2592 const uint8_t *byte;
2593 uint32_t codepoint, min;
2594
2595 while (*str) {
2596 byte = str;
2597 GET_UTF8(codepoint, *(byte++), return 0;);
2598 min = byte - str == 1 ? 0 : byte - str == 2 ? 0x80 :
2599 1 << (5 * (byte - str) - 4);
2600 if (codepoint < min || codepoint >= 0x110000 ||
2601 codepoint == 0xFFFE /* BOM */ ||
2602 codepoint >= 0xD800 && codepoint <= 0xDFFF /* surrogates */)
2603 return 0;
2604 str = byte;
2605 }
2606 return 1;
2607}
2608
2609int avcodec_decode_subtitle2(AVCodecContext *avctx, AVSubtitle *sub,
2610 int *got_sub_ptr,
2611 AVPacket *avpkt)
2612{
2613 int i, ret = 0;
2614
2615 if (!avpkt->data && avpkt->size) {
2616 av_log(avctx, AV_LOG_ERROR, "invalid packet: NULL data, size != 0\n");
2617 return AVERROR(EINVAL);
2618 }
2619 if (!avctx->codec)
2620 return AVERROR(EINVAL);
2621 if (avctx->codec->type != AVMEDIA_TYPE_SUBTITLE) {
2622 av_log(avctx, AV_LOG_ERROR, "Invalid media type for subtitles\n");
2623 return AVERROR(EINVAL);
2624 }
2625
2626 *got_sub_ptr = 0;
2627 avcodec_get_subtitle_defaults(sub);
2628
2629 if ((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size) {
2630 AVPacket pkt_recoded;
2631 AVPacket tmp = *avpkt;
2632 int did_split = av_packet_split_side_data(&tmp);
2633 //apply_param_change(avctx, &tmp);
2634
2635 if (did_split) {
2636 /* FFMIN() prevents overflow in case the packet wasn't allocated with
2637 * proper padding.
2638 * If the side data is smaller than the buffer padding size, the
2639 * remaining bytes should have already been filled with zeros by the
2640 * original packet allocation anyway. */
2641 memset(tmp.data + tmp.size, 0,
2642 FFMIN(avpkt->size - tmp.size, FF_INPUT_BUFFER_PADDING_SIZE));
2643 }
2644
2645 pkt_recoded = tmp;
2646 ret = recode_subtitle(avctx, &pkt_recoded, &tmp);
2647 if (ret < 0) {
2648 *got_sub_ptr = 0;
2649 } else {
2650 avctx->internal->pkt = &pkt_recoded;
2651
2652 if (avctx->pkt_timebase.den && avpkt->pts != AV_NOPTS_VALUE)
2653 sub->pts = av_rescale_q(avpkt->pts,
2654 avctx->pkt_timebase, AV_TIME_BASE_Q);
2655 ret = avctx->codec->decode(avctx, sub, got_sub_ptr, &pkt_recoded);
2656 av_assert1((ret >= 0) >= !!*got_sub_ptr &&
2657 !!*got_sub_ptr >= !!sub->num_rects);
2658
2659 if (sub->num_rects && !sub->end_display_time && avpkt->duration &&
2660 avctx->pkt_timebase.num) {
2661 AVRational ms = { 1, 1000 };
2662 sub->end_display_time = av_rescale_q(avpkt->duration,
2663 avctx->pkt_timebase, ms);
2664 }
2665
2666 for (i = 0; i < sub->num_rects; i++) {
2667 if (sub->rects[i]->ass && !utf8_check(sub->rects[i]->ass)) {
2668 av_log(avctx, AV_LOG_ERROR,
2669 "Invalid UTF-8 in decoded subtitles text; "
2670 "maybe missing -sub_charenc option\n");
2671 avsubtitle_free(sub);
2672 return AVERROR_INVALIDDATA;
2673 }
2674 }
2675
2676 if (tmp.data != pkt_recoded.data) { // did we recode?
2677 /* prevent from destroying side data from original packet */
2678 pkt_recoded.side_data = NULL;
2679 pkt_recoded.side_data_elems = 0;
2680
2681 av_free_packet(&pkt_recoded);
2682 }
2683 if (avctx->codec_descriptor->props & AV_CODEC_PROP_BITMAP_SUB)
2684 sub->format = 0;
2685 else if (avctx->codec_descriptor->props & AV_CODEC_PROP_TEXT_SUB)
2686 sub->format = 1;
2687 avctx->internal->pkt = NULL;
2688 }
2689
2690 if (did_split) {
2691 av_packet_free_side_data(&tmp);
2692 if(ret == tmp.size)
2693 ret = avpkt->size;
2694 }
2695
2696 if (*got_sub_ptr)
2697 avctx->frame_number++;
2698 }
2699
2700 return ret;
2701}
2702
2703void avsubtitle_free(AVSubtitle *sub)
2704{
2705 int i;
2706
2707 for (i = 0; i < sub->num_rects; i++) {
2708 av_freep(&sub->rects[i]->pict.data[0]);
2709 av_freep(&sub->rects[i]->pict.data[1]);
2710 av_freep(&sub->rects[i]->pict.data[2]);
2711 av_freep(&sub->rects[i]->pict.data[3]);
2712 av_freep(&sub->rects[i]->text);
2713 av_freep(&sub->rects[i]->ass);
2714 av_freep(&sub->rects[i]);
2715 }
2716
2717 av_freep(&sub->rects);
2718
2719 memset(sub, 0, sizeof(AVSubtitle));
2720}
2721
2722av_cold int avcodec_close(AVCodecContext *avctx)
2723{
2724 if (!avctx)
2725 return 0;
2726
2727 if (avcodec_is_open(avctx)) {
2728 FramePool *pool = avctx->internal->pool;
2729 int i;
2730 if (CONFIG_FRAME_THREAD_ENCODER &&
2731 avctx->internal->frame_thread_encoder && avctx->thread_count > 1) {
2732 ff_frame_thread_encoder_free(avctx);
2733 }
2734 if (HAVE_THREADS && avctx->internal->thread_ctx)
2735 ff_thread_free(avctx);
2736 if (avctx->codec && avctx->codec->close)
2737 avctx->codec->close(avctx);
2738 avctx->coded_frame = NULL;
2739 avctx->internal->byte_buffer_size = 0;
2740 av_freep(&avctx->internal->byte_buffer);
2741 av_frame_free(&avctx->internal->to_free);
2742 for (i = 0; i < FF_ARRAY_ELEMS(pool->pools); i++)
2743 av_buffer_pool_uninit(&pool->pools[i]);
2744 av_freep(&avctx->internal->pool);
2745
2746 if (avctx->hwaccel && avctx->hwaccel->uninit)
2747 avctx->hwaccel->uninit(avctx);
2748 av_freep(&avctx->internal->hwaccel_priv_data);
2749
2750 av_freep(&avctx->internal);
2751 }
2752
2753 if (avctx->priv_data && avctx->codec && avctx->codec->priv_class)
2754 av_opt_free(avctx->priv_data);
2755 av_opt_free(avctx);
2756 av_freep(&avctx->priv_data);
2757 if (av_codec_is_encoder(avctx->codec))
2758 av_freep(&avctx->extradata);
2759 avctx->codec = NULL;
2760 avctx->active_thread_type = 0;
2761
2762 return 0;
2763}
2764
2765static enum AVCodecID remap_deprecated_codec_id(enum AVCodecID id)
2766{
2767 switch(id){
2768 //This is for future deprecatec codec ids, its empty since
2769 //last major bump but will fill up again over time, please don't remove it
2770// case AV_CODEC_ID_UTVIDEO_DEPRECATED: return AV_CODEC_ID_UTVIDEO;
2771 case AV_CODEC_ID_BRENDER_PIX_DEPRECATED : return AV_CODEC_ID_BRENDER_PIX;
2772 case AV_CODEC_ID_OPUS_DEPRECATED : return AV_CODEC_ID_OPUS;
2773 case AV_CODEC_ID_TAK_DEPRECATED : return AV_CODEC_ID_TAK;
2774 case AV_CODEC_ID_PAF_AUDIO_DEPRECATED : return AV_CODEC_ID_PAF_AUDIO;
2775 case AV_CODEC_ID_PCM_S24LE_PLANAR_DEPRECATED : return AV_CODEC_ID_PCM_S24LE_PLANAR;
2776 case AV_CODEC_ID_PCM_S32LE_PLANAR_DEPRECATED : return AV_CODEC_ID_PCM_S32LE_PLANAR;
2777 case AV_CODEC_ID_ADPCM_VIMA_DEPRECATED : return AV_CODEC_ID_ADPCM_VIMA;
2778 case AV_CODEC_ID_ESCAPE130_DEPRECATED : return AV_CODEC_ID_ESCAPE130;
2779 case AV_CODEC_ID_EXR_DEPRECATED : return AV_CODEC_ID_EXR;
2780 case AV_CODEC_ID_G2M_DEPRECATED : return AV_CODEC_ID_G2M;
2781 case AV_CODEC_ID_PAF_VIDEO_DEPRECATED : return AV_CODEC_ID_PAF_VIDEO;
2782 case AV_CODEC_ID_WEBP_DEPRECATED : return AV_CODEC_ID_WEBP;
2783 case AV_CODEC_ID_HEVC_DEPRECATED : return AV_CODEC_ID_HEVC;
2784 case AV_CODEC_ID_MVC1_DEPRECATED : return AV_CODEC_ID_MVC1;
2785 case AV_CODEC_ID_MVC2_DEPRECATED : return AV_CODEC_ID_MVC2;
2786 case AV_CODEC_ID_SANM_DEPRECATED : return AV_CODEC_ID_SANM;
2787 case AV_CODEC_ID_SGIRLE_DEPRECATED : return AV_CODEC_ID_SGIRLE;
2788 case AV_CODEC_ID_VP7_DEPRECATED : return AV_CODEC_ID_VP7;
2789 default : return id;
2790 }
2791}
2792
2793static AVCodec *find_encdec(enum AVCodecID id, int encoder)
2794{
2795 AVCodec *p, *experimental = NULL;
2796 p = first_avcodec;
2797 id= remap_deprecated_codec_id(id);
2798 while (p) {
2799 if ((encoder ? av_codec_is_encoder(p) : av_codec_is_decoder(p)) &&
2800 p->id == id) {
2801 if (p->capabilities & CODEC_CAP_EXPERIMENTAL && !experimental) {
2802 experimental = p;
2803 } else
2804 return p;
2805 }
2806 p = p->next;
2807 }
2808 return experimental;
2809}
2810
2811AVCodec *avcodec_find_encoder(enum AVCodecID id)
2812{
2813 return find_encdec(id, 1);
2814}
2815
2816AVCodec *avcodec_find_encoder_by_name(const char *name)
2817{
2818 AVCodec *p;
2819 if (!name)
2820 return NULL;
2821 p = first_avcodec;
2822 while (p) {
2823 if (av_codec_is_encoder(p) && strcmp(name, p->name) == 0)
2824 return p;
2825 p = p->next;
2826 }
2827 return NULL;
2828}
2829
2830AVCodec *avcodec_find_decoder(enum AVCodecID id)
2831{
2832 return find_encdec(id, 0);
2833}
2834
2835AVCodec *avcodec_find_decoder_by_name(const char *name)
2836{
2837 AVCodec *p;
2838 if (!name)
2839 return NULL;
2840 p = first_avcodec;
2841 while (p) {
2842 if (av_codec_is_decoder(p) && strcmp(name, p->name) == 0)
2843 return p;
2844 p = p->next;
2845 }
2846 return NULL;
2847}
2848
2849const char *avcodec_get_name(enum AVCodecID id)
2850{
2851 const AVCodecDescriptor *cd;
2852 AVCodec *codec;
2853
2854 if (id == AV_CODEC_ID_NONE)
2855 return "none";
2856 cd = avcodec_descriptor_get(id);
2857 if (cd)
2858 return cd->name;
2859 av_log(NULL, AV_LOG_WARNING, "Codec 0x%x is not in the full list.\n", id);
2860 codec = avcodec_find_decoder(id);
2861 if (codec)
2862 return codec->name;
2863 codec = avcodec_find_encoder(id);
2864 if (codec)
2865 return codec->name;
2866 return "unknown_codec";
2867}
2868
2869size_t av_get_codec_tag_string(char *buf, size_t buf_size, unsigned int codec_tag)
2870{
2871 int i, len, ret = 0;
2872
2873#define TAG_PRINT(x) \
2874 (((x) >= '0' && (x) <= '9') || \
2875 ((x) >= 'a' && (x) <= 'z') || ((x) >= 'A' && (x) <= 'Z') || \
2876 ((x) == '.' || (x) == ' ' || (x) == '-' || (x) == '_'))
2877
2878 for (i = 0; i < 4; i++) {
2879 len = snprintf(buf, buf_size,
2880 TAG_PRINT(codec_tag & 0xFF) ? "%c" : "[%d]", codec_tag & 0xFF);
2881 buf += len;
2882 buf_size = buf_size > len ? buf_size - len : 0;
2883 ret += len;
2884 codec_tag >>= 8;
2885 }
2886 return ret;
2887}
2888
2889void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)
2890{
2891 const char *codec_type;
2892 const char *codec_name;
2893 const char *profile = NULL;
2894 const AVCodec *p;
2895 int bitrate;
2896 AVRational display_aspect_ratio;
2897
2898 if (!buf || buf_size <= 0)
2899 return;
2900 codec_type = av_get_media_type_string(enc->codec_type);
2901 codec_name = avcodec_get_name(enc->codec_id);
2902 if (enc->profile != FF_PROFILE_UNKNOWN) {
2903 if (enc->codec)
2904 p = enc->codec;
2905 else
2906 p = encode ? avcodec_find_encoder(enc->codec_id) :
2907 avcodec_find_decoder(enc->codec_id);
2908 if (p)
2909 profile = av_get_profile_name(p, enc->profile);
2910 }
2911
2912 snprintf(buf, buf_size, "%s: %s", codec_type ? codec_type : "unknown",
2913 codec_name);
2914 buf[0] ^= 'a' ^ 'A'; /* first letter in uppercase */
2915
2916 if (enc->codec && strcmp(enc->codec->name, codec_name))
2917 snprintf(buf + strlen(buf), buf_size - strlen(buf), " (%s)", enc->codec->name);
2918
2919 if (profile)
2920 snprintf(buf + strlen(buf), buf_size - strlen(buf), " (%s)", profile);
2921 if (enc->codec_tag) {
2922 char tag_buf[32];
2923 av_get_codec_tag_string(tag_buf, sizeof(tag_buf), enc->codec_tag);
2924 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2925 " (%s / 0x%04X)", tag_buf, enc->codec_tag);
2926 }
2927
2928 switch (enc->codec_type) {
2929 case AVMEDIA_TYPE_VIDEO:
2930 if (enc->pix_fmt != AV_PIX_FMT_NONE) {
2931 char detail[256] = "(";
2932 const char *colorspace_name;
2933 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2934 ", %s",
2935 av_get_pix_fmt_name(enc->pix_fmt));
2936 if (enc->bits_per_raw_sample &&
2937 enc->bits_per_raw_sample <= av_pix_fmt_desc_get(enc->pix_fmt)->comp[0].depth_minus1)
2938 av_strlcatf(detail, sizeof(detail), "%d bpc, ", enc->bits_per_raw_sample);
2939 if (enc->color_range != AVCOL_RANGE_UNSPECIFIED)
2940 av_strlcatf(detail, sizeof(detail),
2941 enc->color_range == AVCOL_RANGE_MPEG ? "tv, ": "pc, ");
2942
2943 colorspace_name = av_get_colorspace_name(enc->colorspace);
2944 if (colorspace_name)
2945 av_strlcatf(detail, sizeof(detail), "%s, ", colorspace_name);
2946
2947 if (strlen(detail) > 1) {
2948 detail[strlen(detail) - 2] = 0;
2949 av_strlcatf(buf, buf_size, "%s)", detail);
2950 }
2951 }
2952 if (enc->width) {
2953 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2954 ", %dx%d",
2955 enc->width, enc->height);
2956 if (enc->sample_aspect_ratio.num) {
2957 av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
2958 enc->width * enc->sample_aspect_ratio.num,
2959 enc->height * enc->sample_aspect_ratio.den,
2960 1024 * 1024);
2961 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2962 " [SAR %d:%d DAR %d:%d]",
2963 enc->sample_aspect_ratio.num, enc->sample_aspect_ratio.den,
2964 display_aspect_ratio.num, display_aspect_ratio.den);
2965 }
2966 if (av_log_get_level() >= AV_LOG_DEBUG) {
2967 int g = av_gcd(enc->time_base.num, enc->time_base.den);
2968 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2969 ", %d/%d",
2970 enc->time_base.num / g, enc->time_base.den / g);
2971 }
2972 }
2973 if (encode) {
2974 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2975 ", q=%d-%d", enc->qmin, enc->qmax);
2976 }
2977 break;
2978 case AVMEDIA_TYPE_AUDIO:
2979 if (enc->sample_rate) {
2980 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2981 ", %d Hz", enc->sample_rate);
2982 }
2983 av_strlcat(buf, ", ", buf_size);
2984 av_get_channel_layout_string(buf + strlen(buf), buf_size - strlen(buf), enc->channels, enc->channel_layout);
2985 if (enc->sample_fmt != AV_SAMPLE_FMT_NONE) {
2986 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2987 ", %s", av_get_sample_fmt_name(enc->sample_fmt));
2988 }
2989 if ( enc->bits_per_raw_sample > 0
2990 && enc->bits_per_raw_sample != av_get_bytes_per_sample(enc->sample_fmt) * 8)
2991 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2992 " (%d bit)", enc->bits_per_raw_sample);
2993 break;
2994 case AVMEDIA_TYPE_DATA:
2995 if (av_log_get_level() >= AV_LOG_DEBUG) {
2996 int g = av_gcd(enc->time_base.num, enc->time_base.den);
2997 if (g)
2998 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2999 ", %d/%d",
3000 enc->time_base.num / g, enc->time_base.den / g);
3001 }
3002 break;
3003 case AVMEDIA_TYPE_SUBTITLE:
3004 if (enc->width)
3005 snprintf(buf + strlen(buf), buf_size - strlen(buf),
3006 ", %dx%d", enc->width, enc->height);
3007 break;
3008 default:
3009 return;
3010 }
3011 if (encode) {
3012 if (enc->flags & CODEC_FLAG_PASS1)
3013 snprintf(buf + strlen(buf), buf_size - strlen(buf),
3014 ", pass 1");
3015 if (enc->flags & CODEC_FLAG_PASS2)
3016 snprintf(buf + strlen(buf), buf_size - strlen(buf),
3017 ", pass 2");
3018 }
3019 bitrate = get_bit_rate(enc);
3020 if (bitrate != 0) {
3021 snprintf(buf + strlen(buf), buf_size - strlen(buf),
3022 ", %d kb/s", bitrate / 1000);
3023 } else if (enc->rc_max_rate > 0) {
3024 snprintf(buf + strlen(buf), buf_size - strlen(buf),
3025 ", max. %d kb/s", enc->rc_max_rate / 1000);
3026 }
3027}
3028
3029const char *av_get_profile_name(const AVCodec *codec, int profile)
3030{
3031 const AVProfile *p;
3032 if (profile == FF_PROFILE_UNKNOWN || !codec->profiles)
3033 return NULL;
3034
3035 for (p = codec->profiles; p->profile != FF_PROFILE_UNKNOWN; p++)
3036 if (p->profile == profile)
3037 return p->name;
3038
3039 return NULL;
3040}
3041
3042unsigned avcodec_version(void)
3043{
3044// av_assert0(AV_CODEC_ID_V410==164);
3045 av_assert0(AV_CODEC_ID_PCM_S8_PLANAR==65563);
3046 av_assert0(AV_CODEC_ID_ADPCM_G722==69660);
3047// av_assert0(AV_CODEC_ID_BMV_AUDIO==86071);
3048 av_assert0(AV_CODEC_ID_SRT==94216);
3049 av_assert0(LIBAVCODEC_VERSION_MICRO >= 100);
3050
3051 av_assert0(CODEC_ID_CLLC == AV_CODEC_ID_CLLC);
3052 av_assert0(CODEC_ID_PCM_S8_PLANAR == AV_CODEC_ID_PCM_S8_PLANAR);
3053 av_assert0(CODEC_ID_ADPCM_IMA_APC == AV_CODEC_ID_ADPCM_IMA_APC);
3054 av_assert0(CODEC_ID_ILBC == AV_CODEC_ID_ILBC);
3055 av_assert0(CODEC_ID_SRT == AV_CODEC_ID_SRT);
3056 return LIBAVCODEC_VERSION_INT;
3057}
3058
3059const char *avcodec_configuration(void)
3060{
3061 return FFMPEG_CONFIGURATION;
3062}
3063
3064const char *avcodec_license(void)
3065{
3066#define LICENSE_PREFIX "libavcodec license: "
3067 return LICENSE_PREFIX FFMPEG_LICENSE + sizeof(LICENSE_PREFIX) - 1;
3068}
3069
3070void avcodec_flush_buffers(AVCodecContext *avctx)
3071{
3072 if (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME)
3073 ff_thread_flush(avctx);
3074 else if (avctx->codec->flush)
3075 avctx->codec->flush(avctx);
3076
3077 avctx->pts_correction_last_pts =
3078 avctx->pts_correction_last_dts = INT64_MIN;
3079
3080 if (!avctx->refcounted_frames)
3081 av_frame_unref(avctx->internal->to_free);
3082}
3083
3084int av_get_exact_bits_per_sample(enum AVCodecID codec_id)
3085{
3086 switch (codec_id) {
3087 case AV_CODEC_ID_8SVX_EXP:
3088 case AV_CODEC_ID_8SVX_FIB:
3089 case AV_CODEC_ID_ADPCM_CT:
3090 case AV_CODEC_ID_ADPCM_IMA_APC:
3091 case AV_CODEC_ID_ADPCM_IMA_EA_SEAD:
3092 case AV_CODEC_ID_ADPCM_IMA_OKI:
3093 case AV_CODEC_ID_ADPCM_IMA_WS:
3094 case AV_CODEC_ID_ADPCM_G722:
3095 case AV_CODEC_ID_ADPCM_YAMAHA:
3096 return 4;
3097 case AV_CODEC_ID_DSD_LSBF:
3098 case AV_CODEC_ID_DSD_MSBF:
3099 case AV_CODEC_ID_DSD_LSBF_PLANAR:
3100 case AV_CODEC_ID_DSD_MSBF_PLANAR:
3101 case AV_CODEC_ID_PCM_ALAW:
3102 case AV_CODEC_ID_PCM_MULAW:
3103 case AV_CODEC_ID_PCM_S8:
3104 case AV_CODEC_ID_PCM_S8_PLANAR:
3105 case AV_CODEC_ID_PCM_U8:
3106 case AV_CODEC_ID_PCM_ZORK:
3107 return 8;
3108 case AV_CODEC_ID_PCM_S16BE:
3109 case AV_CODEC_ID_PCM_S16BE_PLANAR:
3110 case AV_CODEC_ID_PCM_S16LE:
3111 case AV_CODEC_ID_PCM_S16LE_PLANAR:
3112 case AV_CODEC_ID_PCM_U16BE:
3113 case AV_CODEC_ID_PCM_U16LE:
3114 return 16;
3115 case AV_CODEC_ID_PCM_S24DAUD:
3116 case AV_CODEC_ID_PCM_S24BE:
3117 case AV_CODEC_ID_PCM_S24LE:
3118 case AV_CODEC_ID_PCM_S24LE_PLANAR:
3119 case AV_CODEC_ID_PCM_U24BE:
3120 case AV_CODEC_ID_PCM_U24LE:
3121 return 24;
3122 case AV_CODEC_ID_PCM_S32BE:
3123 case AV_CODEC_ID_PCM_S32LE:
3124 case AV_CODEC_ID_PCM_S32LE_PLANAR:
3125 case AV_CODEC_ID_PCM_U32BE:
3126 case AV_CODEC_ID_PCM_U32LE:
3127 case AV_CODEC_ID_PCM_F32BE:
3128 case AV_CODEC_ID_PCM_F32LE:
3129 return 32;
3130 case AV_CODEC_ID_PCM_F64BE:
3131 case AV_CODEC_ID_PCM_F64LE:
3132 return 64;
3133 default:
3134 return 0;
3135 }
3136}
3137
3138enum AVCodecID av_get_pcm_codec(enum AVSampleFormat fmt, int be)
3139{
3140 static const enum AVCodecID map[AV_SAMPLE_FMT_NB][2] = {
3141 [AV_SAMPLE_FMT_U8 ] = { AV_CODEC_ID_PCM_U8, AV_CODEC_ID_PCM_U8 },
3142 [AV_SAMPLE_FMT_S16 ] = { AV_CODEC_ID_PCM_S16LE, AV_CODEC_ID_PCM_S16BE },
3143 [AV_SAMPLE_FMT_S32 ] = { AV_CODEC_ID_PCM_S32LE, AV_CODEC_ID_PCM_S32BE },
3144 [AV_SAMPLE_FMT_FLT ] = { AV_CODEC_ID_PCM_F32LE, AV_CODEC_ID_PCM_F32BE },
3145 [AV_SAMPLE_FMT_DBL ] = { AV_CODEC_ID_PCM_F64LE, AV_CODEC_ID_PCM_F64BE },
3146 [AV_SAMPLE_FMT_U8P ] = { AV_CODEC_ID_PCM_U8, AV_CODEC_ID_PCM_U8 },
3147 [AV_SAMPLE_FMT_S16P] = { AV_CODEC_ID_PCM_S16LE, AV_CODEC_ID_PCM_S16BE },
3148 [AV_SAMPLE_FMT_S32P] = { AV_CODEC_ID_PCM_S32LE, AV_CODEC_ID_PCM_S32BE },
3149 [AV_SAMPLE_FMT_FLTP] = { AV_CODEC_ID_PCM_F32LE, AV_CODEC_ID_PCM_F32BE },
3150 [AV_SAMPLE_FMT_DBLP] = { AV_CODEC_ID_PCM_F64LE, AV_CODEC_ID_PCM_F64BE },
3151 };
3152 if (fmt < 0 || fmt >= AV_SAMPLE_FMT_NB)
3153 return AV_CODEC_ID_NONE;
3154 if (be < 0 || be > 1)
3155 be = AV_NE(1, 0);
3156 return map[fmt][be];
3157}
3158
3159int av_get_bits_per_sample(enum AVCodecID codec_id)
3160{
3161 switch (codec_id) {
3162 case AV_CODEC_ID_ADPCM_SBPRO_2:
3163 return 2;
3164 case AV_CODEC_ID_ADPCM_SBPRO_3:
3165 return 3;
3166 case AV_CODEC_ID_ADPCM_SBPRO_4:
3167 case AV_CODEC_ID_ADPCM_IMA_WAV:
3168 case AV_CODEC_ID_ADPCM_IMA_QT:
3169 case AV_CODEC_ID_ADPCM_SWF:
3170 case AV_CODEC_ID_ADPCM_MS:
3171 return 4;
3172 default:
3173 return av_get_exact_bits_per_sample(codec_id);
3174 }
3175}
3176
3177int av_get_audio_frame_duration(AVCodecContext *avctx, int frame_bytes)
3178{
3179 int id, sr, ch, ba, tag, bps;
3180
3181 id = avctx->codec_id;
3182 sr = avctx->sample_rate;
3183 ch = avctx->channels;
3184 ba = avctx->block_align;
3185 tag = avctx->codec_tag;
3186 bps = av_get_exact_bits_per_sample(avctx->codec_id);
3187
3188 /* codecs with an exact constant bits per sample */
3189 if (bps > 0 && ch > 0 && frame_bytes > 0 && ch < 32768 && bps < 32768)
3190 return (frame_bytes * 8LL) / (bps * ch);
3191 bps = avctx->bits_per_coded_sample;
3192
3193 /* codecs with a fixed packet duration */
3194 switch (id) {
3195 case AV_CODEC_ID_ADPCM_ADX: return 32;
3196 case AV_CODEC_ID_ADPCM_IMA_QT: return 64;
3197 case AV_CODEC_ID_ADPCM_EA_XAS: return 128;
3198 case AV_CODEC_ID_AMR_NB:
3199 case AV_CODEC_ID_EVRC:
3200 case AV_CODEC_ID_GSM:
3201 case AV_CODEC_ID_QCELP:
3202 case AV_CODEC_ID_RA_288: return 160;
3203 case AV_CODEC_ID_AMR_WB:
3204 case AV_CODEC_ID_GSM_MS: return 320;
3205 case AV_CODEC_ID_MP1: return 384;
3206 case AV_CODEC_ID_ATRAC1: return 512;
3207 case AV_CODEC_ID_ATRAC3: return 1024;
3208 case AV_CODEC_ID_MP2:
3209 case AV_CODEC_ID_MUSEPACK7: return 1152;
3210 case AV_CODEC_ID_AC3: return 1536;
3211 }
3212
3213 if (sr > 0) {
3214 /* calc from sample rate */
3215 if (id == AV_CODEC_ID_TTA)
3216 return 256 * sr / 245;
3217
3218 if (ch > 0) {
3219 /* calc from sample rate and channels */
3220 if (id == AV_CODEC_ID_BINKAUDIO_DCT)
3221 return (480 << (sr / 22050)) / ch;
3222 }
3223 }
3224
3225 if (ba > 0) {
3226 /* calc from block_align */
3227 if (id == AV_CODEC_ID_SIPR) {
3228 switch (ba) {
3229 case 20: return 160;
3230 case 19: return 144;
3231 case 29: return 288;
3232 case 37: return 480;
3233 }
3234 } else if (id == AV_CODEC_ID_ILBC) {
3235 switch (ba) {
3236 case 38: return 160;
3237 case 50: return 240;
3238 }
3239 }
3240 }
3241
3242 if (frame_bytes > 0) {
3243 /* calc from frame_bytes only */
3244 if (id == AV_CODEC_ID_TRUESPEECH)
3245 return 240 * (frame_bytes / 32);
3246 if (id == AV_CODEC_ID_NELLYMOSER)
3247 return 256 * (frame_bytes / 64);
3248 if (id == AV_CODEC_ID_RA_144)
3249 return 160 * (frame_bytes / 20);
3250 if (id == AV_CODEC_ID_G723_1)
3251 return 240 * (frame_bytes / 24);
3252
3253 if (bps > 0) {
3254 /* calc from frame_bytes and bits_per_coded_sample */
3255 if (id == AV_CODEC_ID_ADPCM_G726)
3256 return frame_bytes * 8 / bps;
3257 }
3258
3259 if (ch > 0) {
3260 /* calc from frame_bytes and channels */
3261 switch (id) {
3262 case AV_CODEC_ID_ADPCM_AFC:
3263 return frame_bytes / (9 * ch) * 16;
3264 case AV_CODEC_ID_ADPCM_DTK:
3265 return frame_bytes / (16 * ch) * 28;
3266 case AV_CODEC_ID_ADPCM_4XM:
3267 case AV_CODEC_ID_ADPCM_IMA_ISS:
3268 return (frame_bytes - 4 * ch) * 2 / ch;
3269 case AV_CODEC_ID_ADPCM_IMA_SMJPEG:
3270 return (frame_bytes - 4) * 2 / ch;
3271 case AV_CODEC_ID_ADPCM_IMA_AMV:
3272 return (frame_bytes - 8) * 2 / ch;
3273 case AV_CODEC_ID_ADPCM_XA:
3274 return (frame_bytes / 128) * 224 / ch;
3275 case AV_CODEC_ID_INTERPLAY_DPCM:
3276 return (frame_bytes - 6 - ch) / ch;
3277 case AV_CODEC_ID_ROQ_DPCM:
3278 return (frame_bytes - 8) / ch;
3279 case AV_CODEC_ID_XAN_DPCM:
3280 return (frame_bytes - 2 * ch) / ch;
3281 case AV_CODEC_ID_MACE3:
3282 return 3 * frame_bytes / ch;
3283 case AV_CODEC_ID_MACE6:
3284 return 6 * frame_bytes / ch;
3285 case AV_CODEC_ID_PCM_LXF:
3286 return 2 * (frame_bytes / (5 * ch));
3287 case AV_CODEC_ID_IAC:
3288 case AV_CODEC_ID_IMC:
3289 return 4 * frame_bytes / ch;
3290 }
3291
3292 if (tag) {
3293 /* calc from frame_bytes, channels, and codec_tag */
3294 if (id == AV_CODEC_ID_SOL_DPCM) {
3295 if (tag == 3)
3296 return frame_bytes / ch;
3297 else
3298 return frame_bytes * 2 / ch;
3299 }
3300 }
3301
3302 if (ba > 0) {
3303 /* calc from frame_bytes, channels, and block_align */
3304 int blocks = frame_bytes / ba;
3305 switch (avctx->codec_id) {
3306 case AV_CODEC_ID_ADPCM_IMA_WAV:
3307 if (bps < 2 || bps > 5)
3308 return 0;
3309 return blocks * (1 + (ba - 4 * ch) / (bps * ch) * 8);
3310 case AV_CODEC_ID_ADPCM_IMA_DK3:
3311 return blocks * (((ba - 16) * 2 / 3 * 4) / ch);
3312 case AV_CODEC_ID_ADPCM_IMA_DK4:
3313 return blocks * (1 + (ba - 4 * ch) * 2 / ch);
3314 case AV_CODEC_ID_ADPCM_IMA_RAD:
3315 return blocks * ((ba - 4 * ch) * 2 / ch);
3316 case AV_CODEC_ID_ADPCM_MS:
3317 return blocks * (2 + (ba - 7 * ch) * 2 / ch);
3318 }
3319 }
3320
3321 if (bps > 0) {
3322 /* calc from frame_bytes, channels, and bits_per_coded_sample */
3323 switch (avctx->codec_id) {
3324 case AV_CODEC_ID_PCM_DVD:
3325 if(bps<4)
3326 return 0;
3327 return 2 * (frame_bytes / ((bps * 2 / 8) * ch));
3328 case AV_CODEC_ID_PCM_BLURAY:
3329 if(bps<4)
3330 return 0;
3331 return frame_bytes / ((FFALIGN(ch, 2) * bps) / 8);
3332 case AV_CODEC_ID_S302M:
3333 return 2 * (frame_bytes / ((bps + 4) / 4)) / ch;
3334 }
3335 }
3336 }
3337 }
3338
3339 /* Fall back on using frame_size */
3340 if (avctx->frame_size > 1 && frame_bytes)
3341 return avctx->frame_size;
3342
3343 //For WMA we currently have no other means to calculate duration thus we
3344 //do it here by assuming CBR, which is true for all known cases.
3345 if (avctx->bit_rate>0 && frame_bytes>0 && avctx->sample_rate>0 && avctx->block_align>1) {
3346 if (avctx->codec_id == AV_CODEC_ID_WMAV1 || avctx->codec_id == AV_CODEC_ID_WMAV2)
3347 return (frame_bytes * 8LL * avctx->sample_rate) / avctx->bit_rate;
3348 }
3349
3350 return 0;
3351}
3352
3353#if !HAVE_THREADS
3354int ff_thread_init(AVCodecContext *s)
3355{
3356 return -1;
3357}
3358
3359#endif
3360
3361unsigned int av_xiphlacing(unsigned char *s, unsigned int v)
3362{
3363 unsigned int n = 0;
3364
3365 while (v >= 0xff) {
3366 *s++ = 0xff;
3367 v -= 0xff;
3368 n++;
3369 }
3370 *s = v;
3371 n++;
3372 return n;
3373}
3374
3375int ff_match_2uint16(const uint16_t(*tab)[2], int size, int a, int b)
3376{
3377 int i;
3378 for (i = 0; i < size && !(tab[i][0] == a && tab[i][1] == b); i++) ;
3379 return i;
3380}
3381
3382#if FF_API_MISSING_SAMPLE
3383FF_DISABLE_DEPRECATION_WARNINGS
3384void av_log_missing_feature(void *avc, const char *feature, int want_sample)
3385{
3386 av_log(avc, AV_LOG_WARNING, "%s is not implemented. Update your FFmpeg "
3387 "version to the newest one from Git. If the problem still "
3388 "occurs, it means that your file has a feature which has not "
3389 "been implemented.\n", feature);
3390 if(want_sample)
3391 av_log_ask_for_sample(avc, NULL);
3392}
3393
3394void av_log_ask_for_sample(void *avc, const char *msg, ...)
3395{
3396 va_list argument_list;
3397
3398 va_start(argument_list, msg);
3399
3400 if (msg)
3401 av_vlog(avc, AV_LOG_WARNING, msg, argument_list);
3402 av_log(avc, AV_LOG_WARNING, "If you want to help, upload a sample "
3403 "of this file to ftp://upload.ffmpeg.org/incoming/ "
3404 "and contact the ffmpeg-devel mailing list. (ffmpeg-devel@ffmpeg.org)\n");
3405
3406 va_end(argument_list);
3407}
3408FF_ENABLE_DEPRECATION_WARNINGS
3409#endif /* FF_API_MISSING_SAMPLE */
3410
3411static AVHWAccel *first_hwaccel = NULL;
3412static AVHWAccel **last_hwaccel = &first_hwaccel;
3413
3414void av_register_hwaccel(AVHWAccel *hwaccel)
3415{
3416 AVHWAccel **p = last_hwaccel;
3417 hwaccel->next = NULL;
3418 while(*p || avpriv_atomic_ptr_cas((void * volatile *)p, NULL, hwaccel))
3419 p = &(*p)->next;
3420 last_hwaccel = &hwaccel->next;
3421}
3422
3423AVHWAccel *av_hwaccel_next(const AVHWAccel *hwaccel)
3424{
3425 return hwaccel ? hwaccel->next : first_hwaccel;
3426}
3427
3428int av_lockmgr_register(int (*cb)(void **mutex, enum AVLockOp op))
3429{
3430 if (lockmgr_cb) {
3431 if (lockmgr_cb(&codec_mutex, AV_LOCK_DESTROY))
3432 return -1;
3433 if (lockmgr_cb(&avformat_mutex, AV_LOCK_DESTROY))
3434 return -1;
3435 }
3436
3437 lockmgr_cb = cb;
3438
3439 if (lockmgr_cb) {
3440 if (lockmgr_cb(&codec_mutex, AV_LOCK_CREATE))
3441 return -1;
3442 if (lockmgr_cb(&avformat_mutex, AV_LOCK_CREATE))
3443 return -1;
3444 }
3445 return 0;
3446}
3447
3448int ff_lock_avcodec(AVCodecContext *log_ctx)
3449{
3450 if (lockmgr_cb) {
3451 if ((*lockmgr_cb)(&codec_mutex, AV_LOCK_OBTAIN))
3452 return -1;
3453 }
3454 entangled_thread_counter++;
3455 if (entangled_thread_counter != 1) {
3456 av_log(log_ctx, AV_LOG_ERROR, "Insufficient thread locking around avcodec_open/close()\n");
3457 if (!lockmgr_cb)
3458 av_log(log_ctx, AV_LOG_ERROR, "No lock manager is set, please see av_lockmgr_register()\n");
3459 ff_avcodec_locked = 1;
3460 ff_unlock_avcodec();
3461 return AVERROR(EINVAL);
3462 }
3463 av_assert0(!ff_avcodec_locked);
3464 ff_avcodec_locked = 1;
3465 return 0;
3466}
3467
3468int ff_unlock_avcodec(void)
3469{
3470 av_assert0(ff_avcodec_locked);
3471 ff_avcodec_locked = 0;
3472 entangled_thread_counter--;
3473 if (lockmgr_cb) {
3474 if ((*lockmgr_cb)(&codec_mutex, AV_LOCK_RELEASE))
3475 return -1;
3476 }
3477 return 0;
3478}
3479
3480int avpriv_lock_avformat(void)
3481{
3482 if (lockmgr_cb) {
3483 if ((*lockmgr_cb)(&avformat_mutex, AV_LOCK_OBTAIN))
3484 return -1;
3485 }
3486 return 0;
3487}
3488
3489int avpriv_unlock_avformat(void)
3490{
3491 if (lockmgr_cb) {
3492 if ((*lockmgr_cb)(&avformat_mutex, AV_LOCK_RELEASE))
3493 return -1;
3494 }
3495 return 0;
3496}
3497
3498unsigned int avpriv_toupper4(unsigned int x)
3499{
3500 return av_toupper(x & 0xFF) +
3501 (av_toupper((x >> 8) & 0xFF) << 8) +
3502 (av_toupper((x >> 16) & 0xFF) << 16) +
3503((unsigned)av_toupper((x >> 24) & 0xFF) << 24);
3504}
3505
3506int ff_thread_ref_frame(ThreadFrame *dst, ThreadFrame *src)
3507{
3508 int ret;
3509
3510 dst->owner = src->owner;
3511
3512 ret = av_frame_ref(dst->f, src->f);
3513 if (ret < 0)
3514 return ret;
3515
3516 if (src->progress &&
3517 !(dst->progress = av_buffer_ref(src->progress))) {
3518 ff_thread_release_buffer(dst->owner, dst);
3519 return AVERROR(ENOMEM);
3520 }
3521
3522 return 0;
3523}
3524
3525#if !HAVE_THREADS
3526
3527enum AVPixelFormat ff_thread_get_format(AVCodecContext *avctx, const enum AVPixelFormat *fmt)
3528{
3529 return ff_get_format(avctx, fmt);
3530}
3531
3532int ff_thread_get_buffer(AVCodecContext *avctx, ThreadFrame *f, int flags)
3533{
3534 f->owner = avctx;
3535 return ff_get_buffer(avctx, f->f, flags);
3536}
3537
3538void ff_thread_release_buffer(AVCodecContext *avctx, ThreadFrame *f)
3539{
3540 if (f->f)
3541 av_frame_unref(f->f);
3542}
3543
3544void ff_thread_finish_setup(AVCodecContext *avctx)
3545{
3546}
3547
3548void ff_thread_report_progress(ThreadFrame *f, int progress, int field)
3549{
3550}
3551
3552void ff_thread_await_progress(ThreadFrame *f, int progress, int field)
3553{
3554}
3555
3556int ff_thread_can_start_frame(AVCodecContext *avctx)
3557{
3558 return 1;
3559}
3560
3561int ff_alloc_entries(AVCodecContext *avctx, int count)
3562{
3563 return 0;
3564}
3565
3566void ff_reset_entries(AVCodecContext *avctx)
3567{
3568}
3569
3570void ff_thread_await_progress2(AVCodecContext *avctx, int field, int thread, int shift)
3571{
3572}
3573
3574void ff_thread_report_progress2(AVCodecContext *avctx, int field, int thread, int n)
3575{
3576}
3577
3578#endif
3579
3580enum AVMediaType avcodec_get_type(enum AVCodecID codec_id)
3581{
3582 AVCodec *c= avcodec_find_decoder(codec_id);
3583 if(!c)
3584 c= avcodec_find_encoder(codec_id);
3585 if(c)
3586 return c->type;
3587
3588 if (codec_id <= AV_CODEC_ID_NONE)
3589 return AVMEDIA_TYPE_UNKNOWN;
3590 else if (codec_id < AV_CODEC_ID_FIRST_AUDIO)
3591 return AVMEDIA_TYPE_VIDEO;
3592 else if (codec_id < AV_CODEC_ID_FIRST_SUBTITLE)
3593 return AVMEDIA_TYPE_AUDIO;
3594 else if (codec_id < AV_CODEC_ID_FIRST_UNKNOWN)
3595 return AVMEDIA_TYPE_SUBTITLE;
3596
3597 return AVMEDIA_TYPE_UNKNOWN;
3598}
3599
3600int avcodec_is_open(AVCodecContext *s)
3601{
3602 return !!s->internal;
3603}
3604
3605int avpriv_bprint_to_extradata(AVCodecContext *avctx, struct AVBPrint *buf)
3606{
3607 int ret;
3608 char *str;
3609
3610 ret = av_bprint_finalize(buf, &str);
3611 if (ret < 0)
3612 return ret;
3613 avctx->extradata = str;
3614 /* Note: the string is NUL terminated (so extradata can be read as a
3615 * string), but the ending character is not accounted in the size (in
3616 * binary formats you are likely not supposed to mux that character). When
3617 * extradata is copied, it is also padded with FF_INPUT_BUFFER_PADDING_SIZE
3618 * zeros. */
3619 avctx->extradata_size = buf->len;
3620 return 0;
3621}
3622
3623const uint8_t *avpriv_find_start_code(const uint8_t *av_restrict p,
3624 const uint8_t *end,
3625 uint32_t *av_restrict state)
3626{
3627 int i;
3628
3629 av_assert0(p <= end);
3630 if (p >= end)
3631 return end;
3632
3633 for (i = 0; i < 3; i++) {
3634 uint32_t tmp = *state << 8;
3635 *state = tmp + *(p++);
3636 if (tmp == 0x100 || p == end)
3637 return p;
3638 }
3639
3640 while (p < end) {
3641 if (p[-1] > 1 ) p += 3;
3642 else if (p[-2] ) p += 2;
3643 else if (p[-3]|(p[-1]-1)) p++;
3644 else {
3645 p++;
3646 break;
3647 }
3648 }
3649
3650 p = FFMIN(p, end) - 4;
3651 *state = AV_RB32(p);
3652
3653 return p + 4;
3654}
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