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Imported Debian version 2.5.0~trusty1.1
[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;
f6fa7814 125 if (min_size <= *size && *p)
2ba45a60
DM		 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;
f6fa7814 282 AVPixFmtDescriptor const *desc = av_pix_fmt_desc_get(s->pix_fmt);
2ba45a60
DM		 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;
f6fa7814
DM		 738 int i;
739 static const struct {
740 enum AVPacketSideDataType packet;
741 enum AVFrameSideDataType frame;
742 } sd[] = {
743 { AV_PKT_DATA_REPLAYGAIN , AV_FRAME_DATA_REPLAYGAIN },
744 { AV_PKT_DATA_DISPLAYMATRIX, AV_FRAME_DATA_DISPLAYMATRIX },
745 { AV_PKT_DATA_STEREO3D, AV_FRAME_DATA_STEREO3D },
746 };
2ba45a60
DM		 747
748 if (pkt) {
2ba45a60
DM		 749 frame->pkt_pts = pkt->pts;
750 av_frame_set_pkt_pos (frame, pkt->pos);
751 av_frame_set_pkt_duration(frame, pkt->duration);
752 av_frame_set_pkt_size (frame, pkt->size);
753
f6fa7814
DM		 754 for (i = 0; i < FF_ARRAY_ELEMS(sd); i++) {
755 int size;
756 uint8_t *packet_sd = av_packet_get_side_data(pkt, sd[i].packet, &size);
757 if (packet_sd) {
758 AVFrameSideData *frame_sd = av_frame_new_side_data(frame,
759 sd[i].frame,
760 size);
761 if (!frame_sd)
762 return AVERROR(ENOMEM);
763
764 memcpy(frame_sd->data, packet_sd, size);
765 }
2ba45a60
DM		 766 }
767 } else {
768 frame->pkt_pts = AV_NOPTS_VALUE;
769 av_frame_set_pkt_pos (frame, -1);
770 av_frame_set_pkt_duration(frame, 0);
771 av_frame_set_pkt_size (frame, -1);
772 }
773 frame->reordered_opaque = avctx->reordered_opaque;
774
775 if (frame->color_primaries == AVCOL_PRI_UNSPECIFIED)
776 frame->color_primaries = avctx->color_primaries;
777 if (frame->color_trc == AVCOL_TRC_UNSPECIFIED)
778 frame->color_trc = avctx->color_trc;
779 if (av_frame_get_colorspace(frame) == AVCOL_SPC_UNSPECIFIED)
780 av_frame_set_colorspace(frame, avctx->colorspace);
781 if (av_frame_get_color_range(frame) == AVCOL_RANGE_UNSPECIFIED)
782 av_frame_set_color_range(frame, avctx->color_range);
783 if (frame->chroma_location == AVCHROMA_LOC_UNSPECIFIED)
784 frame->chroma_location = avctx->chroma_sample_location;
785
786 switch (avctx->codec->type) {
787 case AVMEDIA_TYPE_VIDEO:
788 frame->format = avctx->pix_fmt;
789 if (!frame->sample_aspect_ratio.num)
790 frame->sample_aspect_ratio = avctx->sample_aspect_ratio;
791
792 if (frame->width && frame->height &&
793 av_image_check_sar(frame->width, frame->height,
794 frame->sample_aspect_ratio) < 0) {
795 av_log(avctx, AV_LOG_WARNING, "ignoring invalid SAR: %u/%u\n",
796 frame->sample_aspect_ratio.num,
797 frame->sample_aspect_ratio.den);
798 frame->sample_aspect_ratio = (AVRational){ 0, 1 };
799 }
800
801 break;
802 case AVMEDIA_TYPE_AUDIO:
803 if (!frame->sample_rate)
804 frame->sample_rate = avctx->sample_rate;
805 if (frame->format < 0)
806 frame->format = avctx->sample_fmt;
807 if (!frame->channel_layout) {
808 if (avctx->channel_layout) {
809 if (av_get_channel_layout_nb_channels(avctx->channel_layout) !=
810 avctx->channels) {
811 av_log(avctx, AV_LOG_ERROR, "Inconsistent channel "
812 "configuration.\n");
813 return AVERROR(EINVAL);
814 }
815
816 frame->channel_layout = avctx->channel_layout;
817 } else {
818 if (avctx->channels > FF_SANE_NB_CHANNELS) {
819 av_log(avctx, AV_LOG_ERROR, "Too many channels: %d.\n",
820 avctx->channels);
821 return AVERROR(ENOSYS);
822 }
823 }
824 }
825 av_frame_set_channels(frame, avctx->channels);
826 break;
827 }
828 return 0;
829}
830
831#if FF_API_GET_BUFFER
832FF_DISABLE_DEPRECATION_WARNINGS
833int avcodec_default_get_buffer(AVCodecContext *avctx, AVFrame *frame)
834{
835 return avcodec_default_get_buffer2(avctx, frame, 0);
836}
837
838typedef struct CompatReleaseBufPriv {
839 AVCodecContext avctx;
840 AVFrame frame;
841 uint8_t avframe_padding[1024]; // hack to allow linking to a avutil with larger AVFrame
842} CompatReleaseBufPriv;
843
844static void compat_free_buffer(void *opaque, uint8_t *data)
845{
846 CompatReleaseBufPriv *priv = opaque;
847 if (priv->avctx.release_buffer)
848 priv->avctx.release_buffer(&priv->avctx, &priv->frame);
849 av_freep(&priv);
850}
851
852static void compat_release_buffer(void *opaque, uint8_t *data)
853{
854 AVBufferRef *buf = opaque;
855 av_buffer_unref(&buf);
856}
857FF_ENABLE_DEPRECATION_WARNINGS
858#endif
859
860int ff_decode_frame_props(AVCodecContext *avctx, AVFrame *frame)
861{
862 return ff_init_buffer_info(avctx, frame);
863}
864
865static int get_buffer_internal(AVCodecContext *avctx, AVFrame *frame, int flags)
866{
867 const AVHWAccel *hwaccel = avctx->hwaccel;
868 int override_dimensions = 1;
869 int ret;
870
871 if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
872 if ((ret = av_image_check_size(avctx->width, avctx->height, 0, avctx)) < 0 || avctx->pix_fmt<0) {
873 av_log(avctx, AV_LOG_ERROR, "video_get_buffer: image parameters invalid\n");
874 return AVERROR(EINVAL);
875 }
876 }
877 if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
878 if (frame->width <= 0 || frame->height <= 0) {
879 frame->width = FFMAX(avctx->width, FF_CEIL_RSHIFT(avctx->coded_width, avctx->lowres));
880 frame->height = FFMAX(avctx->height, FF_CEIL_RSHIFT(avctx->coded_height, avctx->lowres));
881 override_dimensions = 0;
882 }
883 }
884 ret = ff_decode_frame_props(avctx, frame);
885 if (ret < 0)
886 return ret;
887 if ((ret = ff_init_buffer_info(avctx, frame)) < 0)
888 return ret;
889
890 if (hwaccel && hwaccel->alloc_frame) {
891 ret = hwaccel->alloc_frame(avctx, frame);
892 goto end;
893 }
894
895#if FF_API_GET_BUFFER
896FF_DISABLE_DEPRECATION_WARNINGS
897 /*
898 * Wrap an old get_buffer()-allocated buffer in a bunch of AVBuffers.
899 * We wrap each plane in its own AVBuffer. Each of those has a reference to
900 * a dummy AVBuffer as its private data, unreffing it on free.
901 * When all the planes are freed, the dummy buffer's free callback calls
902 * release_buffer().
903 */
904 if (avctx->get_buffer) {
905 CompatReleaseBufPriv *priv = NULL;
906 AVBufferRef *dummy_buf = NULL;
907 int planes, i, ret;
908
909 if (flags & AV_GET_BUFFER_FLAG_REF)
910 frame->reference = 1;
911
912 ret = avctx->get_buffer(avctx, frame);
913 if (ret < 0)
914 return ret;
915
916 /* return if the buffers are already set up
917 * this would happen e.g. when a custom get_buffer() calls
918 * avcodec_default_get_buffer
919 */
920 if (frame->buf[0])
921 goto end0;
922
923 priv = av_mallocz(sizeof(*priv));
924 if (!priv) {
925 ret = AVERROR(ENOMEM);
926 goto fail;
927 }
928 priv->avctx = *avctx;
929 priv->frame = *frame;
930
931 dummy_buf = av_buffer_create(NULL, 0, compat_free_buffer, priv, 0);
932 if (!dummy_buf) {
933 ret = AVERROR(ENOMEM);
934 goto fail;
935 }
936
937#define WRAP_PLANE(ref_out, data, data_size) \
938do { \
939 AVBufferRef *dummy_ref = av_buffer_ref(dummy_buf); \
940 if (!dummy_ref) { \
941 ret = AVERROR(ENOMEM); \
942 goto fail; \
943 } \
944 ref_out = av_buffer_create(data, data_size, compat_release_buffer, \
945 dummy_ref, 0); \
946 if (!ref_out) { \
947 av_frame_unref(frame); \
948 ret = AVERROR(ENOMEM); \
949 goto fail; \
950 } \
951} while (0)
952
953 if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
954 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(frame->format);
955
956 planes = av_pix_fmt_count_planes(frame->format);
957 /* workaround for AVHWAccel plane count of 0, buf[0] is used as
958 check for allocated buffers: make libavcodec happy */
959 if (desc && desc->flags & AV_PIX_FMT_FLAG_HWACCEL)
960 planes = 1;
961 if (!desc || planes <= 0) {
962 ret = AVERROR(EINVAL);
963 goto fail;
964 }
965
966 for (i = 0; i < planes; i++) {
967 int v_shift = (i == 1 || i == 2) ? desc->log2_chroma_h : 0;
968 int plane_size = (frame->height >> v_shift) * frame->linesize[i];
969
970 WRAP_PLANE(frame->buf[i], frame->data[i], plane_size);
971 }
972 } else {
973 int planar = av_sample_fmt_is_planar(frame->format);
974 planes = planar ? avctx->channels : 1;
975
976 if (planes > FF_ARRAY_ELEMS(frame->buf)) {
977 frame->nb_extended_buf = planes - FF_ARRAY_ELEMS(frame->buf);
978 frame->extended_buf = av_malloc_array(sizeof(*frame->extended_buf),
979 frame->nb_extended_buf);
980 if (!frame->extended_buf) {
981 ret = AVERROR(ENOMEM);
982 goto fail;
983 }
984 }
985
986 for (i = 0; i < FFMIN(planes, FF_ARRAY_ELEMS(frame->buf)); i++)
987 WRAP_PLANE(frame->buf[i], frame->extended_data[i], frame->linesize[0]);
988
989 for (i = 0; i < frame->nb_extended_buf; i++)
990 WRAP_PLANE(frame->extended_buf[i],
991 frame->extended_data[i + FF_ARRAY_ELEMS(frame->buf)],
992 frame->linesize[0]);
993 }
994
995 av_buffer_unref(&dummy_buf);
996
997end0:
998 frame->width = avctx->width;
999 frame->height = avctx->height;
1000
1001 return 0;
1002
1003fail:
1004 avctx->release_buffer(avctx, frame);
1005 av_freep(&priv);
1006 av_buffer_unref(&dummy_buf);
1007 return ret;
1008 }
1009FF_ENABLE_DEPRECATION_WARNINGS
1010#endif
1011
1012 ret = avctx->get_buffer2(avctx, frame, flags);
1013
1014end:
1015 if (avctx->codec_type == AVMEDIA_TYPE_VIDEO && !override_dimensions) {
1016 frame->width = avctx->width;
1017 frame->height = avctx->height;
1018 }
1019
1020 return ret;
1021}
1022
1023int ff_get_buffer(AVCodecContext *avctx, AVFrame *frame, int flags)
1024{
1025 int ret = get_buffer_internal(avctx, frame, flags);
1026 if (ret < 0)
1027 av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
1028 return ret;
1029}
1030
1031static int reget_buffer_internal(AVCodecContext *avctx, AVFrame *frame)
1032{
1033 AVFrame *tmp;
1034 int ret;
1035
1036 av_assert0(avctx->codec_type == AVMEDIA_TYPE_VIDEO);
1037
1038 if (frame->data[0] && (frame->width != avctx->width || frame->height != avctx->height || frame->format != avctx->pix_fmt)) {
1039 av_log(avctx, AV_LOG_WARNING, "Picture changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s in reget buffer()\n",
1040 frame->width, frame->height, av_get_pix_fmt_name(frame->format), avctx->width, avctx->height, av_get_pix_fmt_name(avctx->pix_fmt));
1041 av_frame_unref(frame);
1042 }
1043
1044 ff_init_buffer_info(avctx, frame);
1045
1046 if (!frame->data[0])
1047 return ff_get_buffer(avctx, frame, AV_GET_BUFFER_FLAG_REF);
1048
1049 if (av_frame_is_writable(frame))
1050 return ff_decode_frame_props(avctx, frame);
1051
1052 tmp = av_frame_alloc();
1053 if (!tmp)
1054 return AVERROR(ENOMEM);
1055
1056 av_frame_move_ref(tmp, frame);
1057
1058 ret = ff_get_buffer(avctx, frame, AV_GET_BUFFER_FLAG_REF);
1059 if (ret < 0) {
1060 av_frame_free(&tmp);
1061 return ret;
1062 }
1063
1064 av_frame_copy(frame, tmp);
1065 av_frame_free(&tmp);
1066
1067 return 0;
1068}
1069
1070int ff_reget_buffer(AVCodecContext *avctx, AVFrame *frame)
1071{
1072 int ret = reget_buffer_internal(avctx, frame);
1073 if (ret < 0)
1074 av_log(avctx, AV_LOG_ERROR, "reget_buffer() failed\n");
1075 return ret;
1076}
1077
1078#if FF_API_GET_BUFFER
1079void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic)
1080{
1081 av_assert0(s->codec_type == AVMEDIA_TYPE_VIDEO);
1082
1083 av_frame_unref(pic);
1084}
1085
1086int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic)
1087{
1088 av_assert0(0);
1089 return AVERROR_BUG;
1090}
1091#endif
1092
1093int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2), void *arg, int *ret, int count, int size)
1094{
1095 int i;
1096
1097 for (i = 0; i < count; i++) {
1098 int r = func(c, (char *)arg + i * size);
1099 if (ret)
1100 ret[i] = r;
1101 }
1102 return 0;
1103}
1104
1105int avcodec_default_execute2(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2, int jobnr, int threadnr), void *arg, int *ret, int count)
1106{
1107 int i;
1108
1109 for (i = 0; i < count; i++) {
1110 int r = func(c, arg, i, 0);
1111 if (ret)
1112 ret[i] = r;
1113 }
1114 return 0;
1115}
1116
1117enum AVPixelFormat avpriv_find_pix_fmt(const PixelFormatTag *tags,
1118 unsigned int fourcc)
1119{
1120 while (tags->pix_fmt >= 0) {
1121 if (tags->fourcc == fourcc)
1122 return tags->pix_fmt;
1123 tags++;
1124 }
1125 return AV_PIX_FMT_NONE;
1126}
1127
1128static int is_hwaccel_pix_fmt(enum AVPixelFormat pix_fmt)
1129{
1130 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
1131 return desc->flags & AV_PIX_FMT_FLAG_HWACCEL;
1132}
1133
1134enum AVPixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum AVPixelFormat *fmt)
1135{
1136 while (*fmt != AV_PIX_FMT_NONE && is_hwaccel_pix_fmt(*fmt))
1137 ++fmt;
1138 return fmt[0];
1139}
1140
1141static AVHWAccel *find_hwaccel(enum AVCodecID codec_id,
1142 enum AVPixelFormat pix_fmt)
1143{
1144 AVHWAccel *hwaccel = NULL;
1145
1146 while ((hwaccel = av_hwaccel_next(hwaccel)))
1147 if (hwaccel->id == codec_id
1148 && hwaccel->pix_fmt == pix_fmt)
1149 return hwaccel;
1150 return NULL;
1151}
1152
f6fa7814
DM		 1153static int setup_hwaccel(AVCodecContext *avctx,
1154 const enum AVPixelFormat fmt,
1155 const char *name)
1156{
1157 AVHWAccel *hwa = find_hwaccel(avctx->codec_id, fmt);
1158 int ret = 0;
1159
1160 if (!hwa) {
1161 av_log(avctx, AV_LOG_ERROR,
1162 "Could not find an AVHWAccel for the pixel format: %s",
1163 name);
1164 return AVERROR(ENOENT);
1165 }
1166
1167 if (hwa->priv_data_size) {
1168 avctx->internal->hwaccel_priv_data = av_mallocz(hwa->priv_data_size);
1169 if (!avctx->internal->hwaccel_priv_data)
1170 return AVERROR(ENOMEM);
1171 }
1172
1173 if (hwa->init) {
1174 ret = hwa->init(avctx);
1175 if (ret < 0) {
1176 av_freep(&avctx->internal->hwaccel_priv_data);
1177 return ret;
1178 }
1179 }
1180
1181 avctx->hwaccel = hwa;
1182
1183 return 0;
1184}
2ba45a60
DM		 1185
1186int ff_get_format(AVCodecContext *avctx, const enum AVPixelFormat *fmt)
1187{
1188 const AVPixFmtDescriptor *desc;
f6fa7814
DM		 1189 enum AVPixelFormat *choices;
1190 enum AVPixelFormat ret;
1191 unsigned n = 0;
1192
1193 while (fmt[n] != AV_PIX_FMT_NONE)
1194 ++n;
2ba45a60 1195
f6fa7814
DM		 1196 choices = av_malloc_array(n + 1, sizeof(*choices));
1197 if (!choices)
2ba45a60
DM		 1198 return AV_PIX_FMT_NONE;
1199
f6fa7814 1200 memcpy(choices, fmt, (n + 1) * sizeof(*choices));
2ba45a60 1201
f6fa7814
DM		 1202 for (;;) {
1203 if (avctx->hwaccel && avctx->hwaccel->uninit)
1204 avctx->hwaccel->uninit(avctx);
1205 av_freep(&avctx->internal->hwaccel_priv_data);
1206 avctx->hwaccel = NULL;
2ba45a60 1207
f6fa7814 1208 ret = avctx->get_format(avctx, choices);
2ba45a60 1209
f6fa7814
DM		 1210 desc = av_pix_fmt_desc_get(ret);
1211 if (!desc) {
1212 ret = AV_PIX_FMT_NONE;
1213 break;
2ba45a60
DM		 1214 }
1215
f6fa7814
DM		 1216 if (!(desc->flags & AV_PIX_FMT_FLAG_HWACCEL))
1217 break;
1218 if (avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU)
1219 break;
1220
1221 if (!setup_hwaccel(avctx, ret, desc->name))
1222 break;
1223
1224 /* Remove failed hwaccel from choices */
1225 for (n = 0; choices[n] != ret; n++)
1226 av_assert0(choices[n] != AV_PIX_FMT_NONE);
1227
1228 do
1229 choices[n] = choices[n + 1];
1230 while (choices[n++] != AV_PIX_FMT_NONE);
2ba45a60
DM		 1231 }
1232
f6fa7814 1233 av_freep(&choices);
2ba45a60
DM		 1234 return ret;
1235}
1236
1237#if FF_API_AVFRAME_LAVC
1238void avcodec_get_frame_defaults(AVFrame *frame)
1239{
1240#if LIBAVCODEC_VERSION_MAJOR >= 55
1241 // extended_data should explicitly be freed when needed, this code is unsafe currently
1242 // also this is not compatible to the <55 ABI/API
1243 if (frame->extended_data != frame->data && 0)
1244 av_freep(&frame->extended_data);
1245#endif
1246
1247 memset(frame, 0, sizeof(AVFrame));
1248 av_frame_unref(frame);
1249}
1250
1251AVFrame *avcodec_alloc_frame(void)
1252{
1253 return av_frame_alloc();
1254}
1255
1256void avcodec_free_frame(AVFrame **frame)
1257{
1258 av_frame_free(frame);
1259}
1260#endif
1261
1262MAKE_ACCESSORS(AVCodecContext, codec, AVRational, pkt_timebase)
1263MAKE_ACCESSORS(AVCodecContext, codec, const AVCodecDescriptor *, codec_descriptor)
1264MAKE_ACCESSORS(AVCodecContext, codec, int, lowres)
1265MAKE_ACCESSORS(AVCodecContext, codec, int, seek_preroll)
1266MAKE_ACCESSORS(AVCodecContext, codec, uint16_t*, chroma_intra_matrix)
1267
1268int av_codec_get_max_lowres(const AVCodec *codec)
1269{
1270 return codec->max_lowres;
1271}
1272
f6fa7814 1273static void get_subtitle_defaults(AVSubtitle *sub)
2ba45a60
DM		 1274{
1275 memset(sub, 0, sizeof(*sub));
1276 sub->pts = AV_NOPTS_VALUE;
1277}
1278
1279static int get_bit_rate(AVCodecContext *ctx)
1280{
1281 int bit_rate;
1282 int bits_per_sample;
1283
1284 switch (ctx->codec_type) {
1285 case AVMEDIA_TYPE_VIDEO:
1286 case AVMEDIA_TYPE_DATA:
1287 case AVMEDIA_TYPE_SUBTITLE:
1288 case AVMEDIA_TYPE_ATTACHMENT:
1289 bit_rate = ctx->bit_rate;
1290 break;
1291 case AVMEDIA_TYPE_AUDIO:
1292 bits_per_sample = av_get_bits_per_sample(ctx->codec_id);
1293 bit_rate = bits_per_sample ? ctx->sample_rate * ctx->channels * bits_per_sample : ctx->bit_rate;
1294 break;
1295 default:
1296 bit_rate = 0;
1297 break;
1298 }
1299 return bit_rate;
1300}
1301
1302int attribute_align_arg ff_codec_open2_recursive(AVCodecContext *avctx, const AVCodec *codec, AVDictionary **options)
1303{
1304 int ret = 0;
1305
1306 ff_unlock_avcodec();
1307
1308 ret = avcodec_open2(avctx, codec, options);
1309
1310 ff_lock_avcodec(avctx);
1311 return ret;
1312}
1313
1314int attribute_align_arg avcodec_open2(AVCodecContext *avctx, const AVCodec *codec, AVDictionary **options)
1315{
1316 int ret = 0;
1317 AVDictionary *tmp = NULL;
1318
1319 if (avcodec_is_open(avctx))
1320 return 0;
1321
1322 if ((!codec && !avctx->codec)) {
1323 av_log(avctx, AV_LOG_ERROR, "No codec provided to avcodec_open2()\n");
1324 return AVERROR(EINVAL);
1325 }
1326 if ((codec && avctx->codec && codec != avctx->codec)) {
1327 av_log(avctx, AV_LOG_ERROR, "This AVCodecContext was allocated for %s, "
1328 "but %s passed to avcodec_open2()\n", avctx->codec->name, codec->name);
1329 return AVERROR(EINVAL);
1330 }
1331 if (!codec)
1332 codec = avctx->codec;
1333
1334 if (avctx->extradata_size < 0 || avctx->extradata_size >= FF_MAX_EXTRADATA_SIZE)
1335 return AVERROR(EINVAL);
1336
1337 if (options)
1338 av_dict_copy(&tmp, *options, 0);
1339
1340 ret = ff_lock_avcodec(avctx);
1341 if (ret < 0)
1342 return ret;
1343
1344 avctx->internal = av_mallocz(sizeof(AVCodecInternal));
1345 if (!avctx->internal) {
1346 ret = AVERROR(ENOMEM);
1347 goto end;
1348 }
1349
1350 avctx->internal->pool = av_mallocz(sizeof(*avctx->internal->pool));
1351 if (!avctx->internal->pool) {
1352 ret = AVERROR(ENOMEM);
1353 goto free_and_end;
1354 }
1355
1356 avctx->internal->to_free = av_frame_alloc();
1357 if (!avctx->internal->to_free) {
1358 ret = AVERROR(ENOMEM);
1359 goto free_and_end;
1360 }
1361
1362 if (codec->priv_data_size > 0) {
1363 if (!avctx->priv_data) {
1364 avctx->priv_data = av_mallocz(codec->priv_data_size);
1365 if (!avctx->priv_data) {
1366 ret = AVERROR(ENOMEM);
1367 goto end;
1368 }
1369 if (codec->priv_class) {
1370 *(const AVClass **)avctx->priv_data = codec->priv_class;
1371 av_opt_set_defaults(avctx->priv_data);
1372 }
1373 }
1374 if (codec->priv_class && (ret = av_opt_set_dict(avctx->priv_data, &tmp)) < 0)
1375 goto free_and_end;
1376 } else {
1377 avctx->priv_data = NULL;
1378 }
1379 if ((ret = av_opt_set_dict(avctx, &tmp)) < 0)
1380 goto free_and_end;
1381
f6fa7814
DM		 1382 if (avctx->codec_whitelist && av_match_list(codec->name, avctx->codec_whitelist, ',') <= 0) {
1383 av_log(avctx, AV_LOG_ERROR, "Codec (%s) not on whitelist\n", codec->name);
1384 ret = AVERROR(EINVAL);
1385 goto free_and_end;
1386 }
1387
2ba45a60
DM		 1388 // only call ff_set_dimensions() for non H.264/VP6F codecs so as not to overwrite previously setup dimensions
1389 if (!(avctx->coded_width && avctx->coded_height && avctx->width && avctx->height &&
1390 (avctx->codec_id == AV_CODEC_ID_H264 || avctx->codec_id == AV_CODEC_ID_VP6F))) {
1391 if (avctx->coded_width && avctx->coded_height)
1392 ret = ff_set_dimensions(avctx, avctx->coded_width, avctx->coded_height);
1393 else if (avctx->width && avctx->height)
1394 ret = ff_set_dimensions(avctx, avctx->width, avctx->height);
1395 if (ret < 0)
1396 goto free_and_end;
1397 }
1398
1399 if ((avctx->coded_width || avctx->coded_height || avctx->width || avctx->height)
1400 && ( av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx) < 0
1401 || av_image_check_size(avctx->width, avctx->height, 0, avctx) < 0)) {
1402 av_log(avctx, AV_LOG_WARNING, "Ignoring invalid width/height values\n");
1403 ff_set_dimensions(avctx, 0, 0);
1404 }
1405
1406 if (avctx->width > 0 && avctx->height > 0) {
1407 if (av_image_check_sar(avctx->width, avctx->height,
1408 avctx->sample_aspect_ratio) < 0) {
1409 av_log(avctx, AV_LOG_WARNING, "ignoring invalid SAR: %u/%u\n",
1410 avctx->sample_aspect_ratio.num,
1411 avctx->sample_aspect_ratio.den);
1412 avctx->sample_aspect_ratio = (AVRational){ 0, 1 };
1413 }
1414 }
1415
1416 /* if the decoder init function was already called previously,
1417 * free the already allocated subtitle_header before overwriting it */
1418 if (av_codec_is_decoder(codec))
1419 av_freep(&avctx->subtitle_header);
1420
1421 if (avctx->channels > FF_SANE_NB_CHANNELS) {
1422 ret = AVERROR(EINVAL);
1423 goto free_and_end;
1424 }
1425
1426 avctx->codec = codec;
1427 if ((avctx->codec_type == AVMEDIA_TYPE_UNKNOWN || avctx->codec_type == codec->type) &&
1428 avctx->codec_id == AV_CODEC_ID_NONE) {
1429 avctx->codec_type = codec->type;
1430 avctx->codec_id = codec->id;
1431 }
1432 if (avctx->codec_id != codec->id || (avctx->codec_type != codec->type
1433 && avctx->codec_type != AVMEDIA_TYPE_ATTACHMENT)) {
1434 av_log(avctx, AV_LOG_ERROR, "Codec type or id mismatches\n");
1435 ret = AVERROR(EINVAL);
1436 goto free_and_end;
1437 }
1438 avctx->frame_number = 0;
1439 avctx->codec_descriptor = avcodec_descriptor_get(avctx->codec_id);
1440
1441 if (avctx->codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
1442 avctx->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
1443 const char *codec_string = av_codec_is_encoder(codec) ? "encoder" : "decoder";
1444 AVCodec *codec2;
1445 av_log(avctx, AV_LOG_ERROR,
1446 "The %s '%s' is experimental but experimental codecs are not enabled, "
1447 "add '-strict %d' if you want to use it.\n",
1448 codec_string, codec->name, FF_COMPLIANCE_EXPERIMENTAL);
1449 codec2 = av_codec_is_encoder(codec) ? avcodec_find_encoder(codec->id) : avcodec_find_decoder(codec->id);
1450 if (!(codec2->capabilities & CODEC_CAP_EXPERIMENTAL))
1451 av_log(avctx, AV_LOG_ERROR, "Alternatively use the non experimental %s '%s'.\n",
1452 codec_string, codec2->name);
1453 ret = AVERROR_EXPERIMENTAL;
1454 goto free_and_end;
1455 }
1456
1457 if (avctx->codec_type == AVMEDIA_TYPE_AUDIO &&
1458 (!avctx->time_base.num || !avctx->time_base.den)) {
1459 avctx->time_base.num = 1;
1460 avctx->time_base.den = avctx->sample_rate;
1461 }
1462
1463 if (!HAVE_THREADS)
1464 av_log(avctx, AV_LOG_WARNING, "Warning: not compiled with thread support, using thread emulation\n");
1465
1466 if (CONFIG_FRAME_THREAD_ENCODER) {
1467 ff_unlock_avcodec(); //we will instanciate a few encoders thus kick the counter to prevent false detection of a problem
1468 ret = ff_frame_thread_encoder_init(avctx, options ? *options : NULL);
1469 ff_lock_avcodec(avctx);
1470 if (ret < 0)
1471 goto free_and_end;
1472 }
1473
1474 if (HAVE_THREADS
1475 && !(avctx->internal->frame_thread_encoder && (avctx->active_thread_type&FF_THREAD_FRAME))) {
1476 ret = ff_thread_init(avctx);
1477 if (ret < 0) {
1478 goto free_and_end;
1479 }
1480 }
1481 if (!HAVE_THREADS && !(codec->capabilities & CODEC_CAP_AUTO_THREADS))
1482 avctx->thread_count = 1;
1483
1484 if (avctx->codec->max_lowres < avctx->lowres || avctx->lowres < 0) {
1485 av_log(avctx, AV_LOG_ERROR, "The maximum value for lowres supported by the decoder is %d\n",
1486 avctx->codec->max_lowres);
1487 ret = AVERROR(EINVAL);
1488 goto free_and_end;
1489 }
1490
1491#if FF_API_VISMV
1492 if (avctx->debug_mv)
1493 av_log(avctx, AV_LOG_WARNING, "The 'vismv' option is deprecated, "
1494 "see the codecview filter instead.\n");
1495#endif
1496
1497 if (av_codec_is_encoder(avctx->codec)) {
1498 int i;
1499 if (avctx->codec->sample_fmts) {
1500 for (i = 0; avctx->codec->sample_fmts[i] != AV_SAMPLE_FMT_NONE; i++) {
1501 if (avctx->sample_fmt == avctx->codec->sample_fmts[i])
1502 break;
1503 if (avctx->channels == 1 &&
1504 av_get_planar_sample_fmt(avctx->sample_fmt) ==
1505 av_get_planar_sample_fmt(avctx->codec->sample_fmts[i])) {
1506 avctx->sample_fmt = avctx->codec->sample_fmts[i];
1507 break;
1508 }
1509 }
1510 if (avctx->codec->sample_fmts[i] == AV_SAMPLE_FMT_NONE) {
1511 char buf[128];
1512 snprintf(buf, sizeof(buf), "%d", avctx->sample_fmt);
1513 av_log(avctx, AV_LOG_ERROR, "Specified sample format %s is invalid or not supported\n",
1514 (char *)av_x_if_null(av_get_sample_fmt_name(avctx->sample_fmt), buf));
1515 ret = AVERROR(EINVAL);
1516 goto free_and_end;
1517 }
1518 }
1519 if (avctx->codec->pix_fmts) {
1520 for (i = 0; avctx->codec->pix_fmts[i] != AV_PIX_FMT_NONE; i++)
1521 if (avctx->pix_fmt == avctx->codec->pix_fmts[i])
1522 break;
1523 if (avctx->codec->pix_fmts[i] == AV_PIX_FMT_NONE
1524 && !((avctx->codec_id == AV_CODEC_ID_MJPEG || avctx->codec_id == AV_CODEC_ID_LJPEG)
1525 && avctx->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL)) {
1526 char buf[128];
1527 snprintf(buf, sizeof(buf), "%d", avctx->pix_fmt);
1528 av_log(avctx, AV_LOG_ERROR, "Specified pixel format %s is invalid or not supported\n",
1529 (char *)av_x_if_null(av_get_pix_fmt_name(avctx->pix_fmt), buf));
1530 ret = AVERROR(EINVAL);
1531 goto free_and_end;
1532 }
f6fa7814
DM		 1533 if (avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ420P ||
1534 avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ411P ||
1535 avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ422P ||
1536 avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ440P ||
1537 avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ444P)
1538 avctx->color_range = AVCOL_RANGE_JPEG;
2ba45a60
DM		 1539 }
1540 if (avctx->codec->supported_samplerates) {
1541 for (i = 0; avctx->codec->supported_samplerates[i] != 0; i++)
1542 if (avctx->sample_rate == avctx->codec->supported_samplerates[i])
1543 break;
1544 if (avctx->codec->supported_samplerates[i] == 0) {
1545 av_log(avctx, AV_LOG_ERROR, "Specified sample rate %d is not supported\n",
1546 avctx->sample_rate);
1547 ret = AVERROR(EINVAL);
1548 goto free_and_end;
1549 }
1550 }
1551 if (avctx->codec->channel_layouts) {
1552 if (!avctx->channel_layout) {
1553 av_log(avctx, AV_LOG_WARNING, "Channel layout not specified\n");
1554 } else {
1555 for (i = 0; avctx->codec->channel_layouts[i] != 0; i++)
1556 if (avctx->channel_layout == avctx->codec->channel_layouts[i])
1557 break;
1558 if (avctx->codec->channel_layouts[i] == 0) {
1559 char buf[512];
1560 av_get_channel_layout_string(buf, sizeof(buf), -1, avctx->channel_layout);
1561 av_log(avctx, AV_LOG_ERROR, "Specified channel layout '%s' is not supported\n", buf);
1562 ret = AVERROR(EINVAL);
1563 goto free_and_end;
1564 }
1565 }
1566 }
1567 if (avctx->channel_layout && avctx->channels) {
1568 int channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
1569 if (channels != avctx->channels) {
1570 char buf[512];
1571 av_get_channel_layout_string(buf, sizeof(buf), -1, avctx->channel_layout);
1572 av_log(avctx, AV_LOG_ERROR,
1573 "Channel layout '%s' with %d channels does not match number of specified channels %d\n",
1574 buf, channels, avctx->channels);
1575 ret = AVERROR(EINVAL);
1576 goto free_and_end;
1577 }
1578 } else if (avctx->channel_layout) {
1579 avctx->channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
1580 }
1581 if(avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
1582 if (avctx->width <= 0 || avctx->height <= 0) {
1583 av_log(avctx, AV_LOG_ERROR, "dimensions not set\n");
1584 ret = AVERROR(EINVAL);
1585 goto free_and_end;
1586 }
1587 }
1588 if ( (avctx->codec_type == AVMEDIA_TYPE_VIDEO || avctx->codec_type == AVMEDIA_TYPE_AUDIO)
1589 && avctx->bit_rate>0 && avctx->bit_rate<1000) {
1590 av_log(avctx, AV_LOG_WARNING, "Bitrate %d is extremely low, maybe you mean %dk\n", avctx->bit_rate, avctx->bit_rate);
1591 }
1592
1593 if (!avctx->rc_initial_buffer_occupancy)
1594 avctx->rc_initial_buffer_occupancy = avctx->rc_buffer_size * 3 / 4;
1595 }
1596
1597 avctx->pts_correction_num_faulty_pts =
1598 avctx->pts_correction_num_faulty_dts = 0;
1599 avctx->pts_correction_last_pts =
1600 avctx->pts_correction_last_dts = INT64_MIN;
1601
1602 if ( avctx->codec->init && (!(avctx->active_thread_type&FF_THREAD_FRAME)
1603 || avctx->internal->frame_thread_encoder)) {
1604 ret = avctx->codec->init(avctx);
1605 if (ret < 0) {
1606 goto free_and_end;
1607 }
1608 }
1609
1610 ret=0;
1611
f6fa7814
DM		 1612#if FF_API_AUDIOENC_DELAY
1613 if (av_codec_is_encoder(avctx->codec))
1614 avctx->delay = avctx->initial_padding;
1615#endif
1616
2ba45a60
DM		 1617 if (av_codec_is_decoder(avctx->codec)) {
1618 if (!avctx->bit_rate)
1619 avctx->bit_rate = get_bit_rate(avctx);
1620 /* validate channel layout from the decoder */
1621 if (avctx->channel_layout) {
1622 int channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
1623 if (!avctx->channels)
1624 avctx->channels = channels;
1625 else if (channels != avctx->channels) {
1626 char buf[512];
1627 av_get_channel_layout_string(buf, sizeof(buf), -1, avctx->channel_layout);
1628 av_log(avctx, AV_LOG_WARNING,
1629 "Channel layout '%s' with %d channels does not match specified number of channels %d: "
1630 "ignoring specified channel layout\n",
1631 buf, channels, avctx->channels);
1632 avctx->channel_layout = 0;
1633 }
1634 }
1635 if (avctx->channels && avctx->channels < 0 ||
1636 avctx->channels > FF_SANE_NB_CHANNELS) {
1637 ret = AVERROR(EINVAL);
1638 goto free_and_end;
1639 }
1640 if (avctx->sub_charenc) {
1641 if (avctx->codec_type != AVMEDIA_TYPE_SUBTITLE) {
1642 av_log(avctx, AV_LOG_ERROR, "Character encoding is only "
1643 "supported with subtitles codecs\n");
1644 ret = AVERROR(EINVAL);
1645 goto free_and_end;
1646 } else if (avctx->codec_descriptor->props & AV_CODEC_PROP_BITMAP_SUB) {
1647 av_log(avctx, AV_LOG_WARNING, "Codec '%s' is bitmap-based, "
1648 "subtitles character encoding will be ignored\n",
1649 avctx->codec_descriptor->name);
1650 avctx->sub_charenc_mode = FF_SUB_CHARENC_MODE_DO_NOTHING;
1651 } else {
1652 /* input character encoding is set for a text based subtitle
1653 * codec at this point */
1654 if (avctx->sub_charenc_mode == FF_SUB_CHARENC_MODE_AUTOMATIC)
1655 avctx->sub_charenc_mode = FF_SUB_CHARENC_MODE_PRE_DECODER;
1656
1657 if (avctx->sub_charenc_mode == FF_SUB_CHARENC_MODE_PRE_DECODER) {
1658#if CONFIG_ICONV
1659 iconv_t cd = iconv_open("UTF-8", avctx->sub_charenc);
1660 if (cd == (iconv_t)-1) {
f6fa7814 1661 ret = AVERROR(errno);
2ba45a60
DM		 1662 av_log(avctx, AV_LOG_ERROR, "Unable to open iconv context "
1663 "with input character encoding \"%s\"\n", avctx->sub_charenc);
2ba45a60
DM		 1664 goto free_and_end;
1665 }
1666 iconv_close(cd);
1667#else
1668 av_log(avctx, AV_LOG_ERROR, "Character encoding subtitles "
1669 "conversion needs a libavcodec built with iconv support "
1670 "for this codec\n");
1671 ret = AVERROR(ENOSYS);
1672 goto free_and_end;
1673#endif
1674 }
1675 }
1676 }
f6fa7814
DM		 1677
1678#if FF_API_AVCTX_TIMEBASE
1679 if (avctx->framerate.num > 0 && avctx->framerate.den > 0)
1680 avctx->time_base = av_inv_q(av_mul_q(avctx->framerate, (AVRational){avctx->ticks_per_frame, 1}));
1681#endif
2ba45a60
DM		 1682 }
1683end:
1684 ff_unlock_avcodec();
1685 if (options) {
1686 av_dict_free(options);
1687 *options = tmp;
1688 }
1689
1690 return ret;
1691free_and_end:
1692 av_dict_free(&tmp);
f6fa7814
DM		 1693 if (codec->priv_class && codec->priv_data_size)
1694 av_opt_free(avctx->priv_data);
2ba45a60
DM		 1695 av_freep(&avctx->priv_data);
1696 if (avctx->internal) {
1697 av_frame_free(&avctx->internal->to_free);
1698 av_freep(&avctx->internal->pool);
1699 }
1700 av_freep(&avctx->internal);
1701 avctx->codec = NULL;
1702 goto end;
1703}
1704
1705int ff_alloc_packet2(AVCodecContext *avctx, AVPacket *avpkt, int64_t size)
1706{
1707 if (avpkt->size < 0) {
1708 av_log(avctx, AV_LOG_ERROR, "Invalid negative user packet size %d\n", avpkt->size);
1709 return AVERROR(EINVAL);
1710 }
1711 if (size < 0 || size > INT_MAX - FF_INPUT_BUFFER_PADDING_SIZE) {
1712 av_log(avctx, AV_LOG_ERROR, "Invalid minimum required packet size %"PRId64" (max allowed is %d)\n",
1713 size, INT_MAX - FF_INPUT_BUFFER_PADDING_SIZE);
1714 return AVERROR(EINVAL);
1715 }
1716
1717 if (avctx) {
1718 av_assert0(!avpkt->data || avpkt->data != avctx->internal->byte_buffer);
1719 if (!avpkt->data || avpkt->size < size) {
1720 av_fast_padded_malloc(&avctx->internal->byte_buffer, &avctx->internal->byte_buffer_size, size);
1721 avpkt->data = avctx->internal->byte_buffer;
1722 avpkt->size = avctx->internal->byte_buffer_size;
1723#if FF_API_DESTRUCT_PACKET
1724FF_DISABLE_DEPRECATION_WARNINGS
1725 avpkt->destruct = NULL;
1726FF_ENABLE_DEPRECATION_WARNINGS
1727#endif
1728 }
1729 }
1730
1731 if (avpkt->data) {
1732 AVBufferRef *buf = avpkt->buf;
1733#if FF_API_DESTRUCT_PACKET
1734FF_DISABLE_DEPRECATION_WARNINGS
1735 void *destruct = avpkt->destruct;
1736FF_ENABLE_DEPRECATION_WARNINGS
1737#endif
1738
1739 if (avpkt->size < size) {
1740 av_log(avctx, AV_LOG_ERROR, "User packet is too small (%d < %"PRId64")\n", avpkt->size, size);
1741 return AVERROR(EINVAL);
1742 }
1743
1744 av_init_packet(avpkt);
1745#if FF_API_DESTRUCT_PACKET
1746FF_DISABLE_DEPRECATION_WARNINGS
1747 avpkt->destruct = destruct;
1748FF_ENABLE_DEPRECATION_WARNINGS
1749#endif
1750 avpkt->buf = buf;
1751 avpkt->size = size;
1752 return 0;
1753 } else {
1754 int ret = av_new_packet(avpkt, size);
1755 if (ret < 0)
1756 av_log(avctx, AV_LOG_ERROR, "Failed to allocate packet of size %"PRId64"\n", size);
1757 return ret;
1758 }
1759}
1760
1761int ff_alloc_packet(AVPacket *avpkt, int size)
1762{
1763 return ff_alloc_packet2(NULL, avpkt, size);
1764}
1765
1766/**
1767 * Pad last frame with silence.
1768 */
1769static int pad_last_frame(AVCodecContext *s, AVFrame **dst, const AVFrame *src)
1770{
1771 AVFrame *frame = NULL;
1772 int ret;
1773
1774 if (!(frame = av_frame_alloc()))
1775 return AVERROR(ENOMEM);
1776
1777 frame->format = src->format;
1778 frame->channel_layout = src->channel_layout;
1779 av_frame_set_channels(frame, av_frame_get_channels(src));
1780 frame->nb_samples = s->frame_size;
1781 ret = av_frame_get_buffer(frame, 32);
1782 if (ret < 0)
1783 goto fail;
1784
1785 ret = av_frame_copy_props(frame, src);
1786 if (ret < 0)
1787 goto fail;
1788
1789 if ((ret = av_samples_copy(frame->extended_data, src->extended_data, 0, 0,
1790 src->nb_samples, s->channels, s->sample_fmt)) < 0)
1791 goto fail;
1792 if ((ret = av_samples_set_silence(frame->extended_data, src->nb_samples,
1793 frame->nb_samples - src->nb_samples,
1794 s->channels, s->sample_fmt)) < 0)
1795 goto fail;
1796
1797 *dst = frame;
1798
1799 return 0;
1800
1801fail:
1802 av_frame_free(&frame);
1803 return ret;
1804}
1805
1806int attribute_align_arg avcodec_encode_audio2(AVCodecContext *avctx,
1807 AVPacket *avpkt,
1808 const AVFrame *frame,
1809 int *got_packet_ptr)
1810{
1811 AVFrame *extended_frame = NULL;
1812 AVFrame *padded_frame = NULL;
1813 int ret;
1814 AVPacket user_pkt = *avpkt;
1815 int needs_realloc = !user_pkt.data;
1816
1817 *got_packet_ptr = 0;
1818
1819 if (!(avctx->codec->capabilities & CODEC_CAP_DELAY) && !frame) {
1820 av_free_packet(avpkt);
1821 av_init_packet(avpkt);
1822 return 0;
1823 }
1824
1825 /* ensure that extended_data is properly set */
1826 if (frame && !frame->extended_data) {
1827 if (av_sample_fmt_is_planar(avctx->sample_fmt) &&
1828 avctx->channels > AV_NUM_DATA_POINTERS) {
1829 av_log(avctx, AV_LOG_ERROR, "Encoding to a planar sample format, "
1830 "with more than %d channels, but extended_data is not set.\n",
1831 AV_NUM_DATA_POINTERS);
1832 return AVERROR(EINVAL);
1833 }
1834 av_log(avctx, AV_LOG_WARNING, "extended_data is not set.\n");
1835
1836 extended_frame = av_frame_alloc();
1837 if (!extended_frame)
1838 return AVERROR(ENOMEM);
1839
1840 memcpy(extended_frame, frame, sizeof(AVFrame));
1841 extended_frame->extended_data = extended_frame->data;
1842 frame = extended_frame;
1843 }
1844
1845 /* check for valid frame size */
1846 if (frame) {
1847 if (avctx->codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME) {
1848 if (frame->nb_samples > avctx->frame_size) {
1849 av_log(avctx, AV_LOG_ERROR, "more samples than frame size (avcodec_encode_audio2)\n");
1850 ret = AVERROR(EINVAL);
1851 goto end;
1852 }
1853 } else if (!(avctx->codec->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE)) {
1854 if (frame->nb_samples < avctx->frame_size &&
1855 !avctx->internal->last_audio_frame) {
1856 ret = pad_last_frame(avctx, &padded_frame, frame);
1857 if (ret < 0)
1858 goto end;
1859
1860 frame = padded_frame;
1861 avctx->internal->last_audio_frame = 1;
1862 }
1863
1864 if (frame->nb_samples != avctx->frame_size) {
1865 av_log(avctx, AV_LOG_ERROR, "nb_samples (%d) != frame_size (%d) (avcodec_encode_audio2)\n", frame->nb_samples, avctx->frame_size);
1866 ret = AVERROR(EINVAL);
1867 goto end;
1868 }
1869 }
1870 }
1871
1872 ret = avctx->codec->encode2(avctx, avpkt, frame, got_packet_ptr);
1873 if (!ret) {
1874 if (*got_packet_ptr) {
1875 if (!(avctx->codec->capabilities & CODEC_CAP_DELAY)) {
1876 if (avpkt->pts == AV_NOPTS_VALUE)
1877 avpkt->pts = frame->pts;
1878 if (!avpkt->duration)
1879 avpkt->duration = ff_samples_to_time_base(avctx,
1880 frame->nb_samples);
1881 }
1882 avpkt->dts = avpkt->pts;
1883 } else {
1884 avpkt->size = 0;
1885 }
1886 }
1887 if (avpkt->data && avpkt->data == avctx->internal->byte_buffer) {
1888 needs_realloc = 0;
1889 if (user_pkt.data) {
1890 if (user_pkt.size >= avpkt->size) {
1891 memcpy(user_pkt.data, avpkt->data, avpkt->size);
1892 } else {
1893 av_log(avctx, AV_LOG_ERROR, "Provided packet is too small, needs to be %d\n", avpkt->size);
1894 avpkt->size = user_pkt.size;
1895 ret = -1;
1896 }
1897 avpkt->buf = user_pkt.buf;
1898 avpkt->data = user_pkt.data;
1899#if FF_API_DESTRUCT_PACKET
1900FF_DISABLE_DEPRECATION_WARNINGS
1901 avpkt->destruct = user_pkt.destruct;
1902FF_ENABLE_DEPRECATION_WARNINGS
1903#endif
1904 } else {
1905 if (av_dup_packet(avpkt) < 0) {
1906 ret = AVERROR(ENOMEM);
1907 }
1908 }
1909 }
1910
1911 if (!ret) {
1912 if (needs_realloc && avpkt->data) {
1913 ret = av_buffer_realloc(&avpkt->buf, avpkt->size + FF_INPUT_BUFFER_PADDING_SIZE);
1914 if (ret >= 0)
1915 avpkt->data = avpkt->buf->data;
1916 }
1917
1918 avctx->frame_number++;
1919 }
1920
1921 if (ret < 0 || !*got_packet_ptr) {
1922 av_free_packet(avpkt);
1923 av_init_packet(avpkt);
1924 goto end;
1925 }
1926
1927 /* NOTE: if we add any audio encoders which output non-keyframe packets,
1928 * this needs to be moved to the encoders, but for now we can do it
1929 * here to simplify things */
1930 avpkt->flags |= AV_PKT_FLAG_KEY;
1931
1932end:
1933 av_frame_free(&padded_frame);
1934 av_free(extended_frame);
1935
f6fa7814
DM		 1936#if FF_API_AUDIOENC_DELAY
1937 avctx->delay = avctx->initial_padding;
1938#endif
1939
2ba45a60
DM		 1940 return ret;
1941}
1942
1943#if FF_API_OLD_ENCODE_AUDIO
1944int attribute_align_arg avcodec_encode_audio(AVCodecContext *avctx,
1945 uint8_t *buf, int buf_size,
1946 const short *samples)
1947{
1948 AVPacket pkt;
1949 AVFrame *frame;
1950 int ret, samples_size, got_packet;
1951
1952 av_init_packet(&pkt);
1953 pkt.data = buf;
1954 pkt.size = buf_size;
1955
1956 if (samples) {
1957 frame = av_frame_alloc();
1958 if (!frame)
1959 return AVERROR(ENOMEM);
1960
1961 if (avctx->frame_size) {
1962 frame->nb_samples = avctx->frame_size;
1963 } else {
1964 /* if frame_size is not set, the number of samples must be
1965 * calculated from the buffer size */
1966 int64_t nb_samples;
1967 if (!av_get_bits_per_sample(avctx->codec_id)) {
1968 av_log(avctx, AV_LOG_ERROR, "avcodec_encode_audio() does not "
1969 "support this codec\n");
1970 av_frame_free(&frame);
1971 return AVERROR(EINVAL);
1972 }
1973 nb_samples = (int64_t)buf_size * 8 /
1974 (av_get_bits_per_sample(avctx->codec_id) *
1975 avctx->channels);
1976 if (nb_samples >= INT_MAX) {
1977 av_frame_free(&frame);
1978 return AVERROR(EINVAL);
1979 }
1980 frame->nb_samples = nb_samples;
1981 }
1982
1983 /* it is assumed that the samples buffer is large enough based on the
1984 * relevant parameters */
1985 samples_size = av_samples_get_buffer_size(NULL, avctx->channels,
1986 frame->nb_samples,
1987 avctx->sample_fmt, 1);
1988 if ((ret = avcodec_fill_audio_frame(frame, avctx->channels,
1989 avctx->sample_fmt,
1990 (const uint8_t *)samples,
1991 samples_size, 1)) < 0) {
1992 av_frame_free(&frame);
1993 return ret;
1994 }
1995
1996 /* fabricate frame pts from sample count.
1997 * this is needed because the avcodec_encode_audio() API does not have
1998 * a way for the user to provide pts */
1999 if (avctx->sample_rate && avctx->time_base.num)
2000 frame->pts = ff_samples_to_time_base(avctx,
2001 avctx->internal->sample_count);
2002 else
2003 frame->pts = AV_NOPTS_VALUE;
2004 avctx->internal->sample_count += frame->nb_samples;
2005 } else {
2006 frame = NULL;
2007 }
2008
2009 got_packet = 0;
2010 ret = avcodec_encode_audio2(avctx, &pkt, frame, &got_packet);
2011 if (!ret && got_packet && avctx->coded_frame) {
2012 avctx->coded_frame->pts = pkt.pts;
2013 avctx->coded_frame->key_frame = !!(pkt.flags & AV_PKT_FLAG_KEY);
2014 }
2015 /* free any side data since we cannot return it */
2016 av_packet_free_side_data(&pkt);
2017
2018 if (frame && frame->extended_data != frame->data)
2019 av_freep(&frame->extended_data);
2020
2021 av_frame_free(&frame);
2022 return ret ? ret : pkt.size;
2023}
2024
2025#endif
2026
2027#if FF_API_OLD_ENCODE_VIDEO
2028int attribute_align_arg avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
2029 const AVFrame *pict)
2030{
2031 AVPacket pkt;
2032 int ret, got_packet = 0;
2033
2034 if (buf_size < FF_MIN_BUFFER_SIZE) {
2035 av_log(avctx, AV_LOG_ERROR, "buffer smaller than minimum size\n");
2036 return -1;
2037 }
2038
2039 av_init_packet(&pkt);
2040 pkt.data = buf;
2041 pkt.size = buf_size;
2042
2043 ret = avcodec_encode_video2(avctx, &pkt, pict, &got_packet);
2044 if (!ret && got_packet && avctx->coded_frame) {
2045 avctx->coded_frame->pts = pkt.pts;
2046 avctx->coded_frame->key_frame = !!(pkt.flags & AV_PKT_FLAG_KEY);
2047 }
2048
2049 /* free any side data since we cannot return it */
2050 if (pkt.side_data_elems > 0) {
2051 int i;
2052 for (i = 0; i < pkt.side_data_elems; i++)
2053 av_free(pkt.side_data[i].data);
2054 av_freep(&pkt.side_data);
2055 pkt.side_data_elems = 0;
2056 }
2057
2058 return ret ? ret : pkt.size;
2059}
2060
2061#endif
2062
2063int attribute_align_arg avcodec_encode_video2(AVCodecContext *avctx,
2064 AVPacket *avpkt,
2065 const AVFrame *frame,
2066 int *got_packet_ptr)
2067{
2068 int ret;
2069 AVPacket user_pkt = *avpkt;
2070 int needs_realloc = !user_pkt.data;
2071
2072 *got_packet_ptr = 0;
2073
2074 if(CONFIG_FRAME_THREAD_ENCODER &&
2075 avctx->internal->frame_thread_encoder && (avctx->active_thread_type&FF_THREAD_FRAME))
2076 return ff_thread_video_encode_frame(avctx, avpkt, frame, got_packet_ptr);
2077
2078 if ((avctx->flags&CODEC_FLAG_PASS1) && avctx->stats_out)
2079 avctx->stats_out[0] = '\0';
2080
2081 if (!(avctx->codec->capabilities & CODEC_CAP_DELAY) && !frame) {
2082 av_free_packet(avpkt);
2083 av_init_packet(avpkt);
2084 avpkt->size = 0;
2085 return 0;
2086 }
2087
2088 if (av_image_check_size(avctx->width, avctx->height, 0, avctx))
2089 return AVERROR(EINVAL);
2090
2091 av_assert0(avctx->codec->encode2);
2092
2093 ret = avctx->codec->encode2(avctx, avpkt, frame, got_packet_ptr);
2094 av_assert0(ret <= 0);
2095
2096 if (avpkt->data && avpkt->data == avctx->internal->byte_buffer) {
2097 needs_realloc = 0;
2098 if (user_pkt.data) {
2099 if (user_pkt.size >= avpkt->size) {
2100 memcpy(user_pkt.data, avpkt->data, avpkt->size);
2101 } else {
2102 av_log(avctx, AV_LOG_ERROR, "Provided packet is too small, needs to be %d\n", avpkt->size);
2103 avpkt->size = user_pkt.size;
2104 ret = -1;
2105 }
2106 avpkt->buf = user_pkt.buf;
2107 avpkt->data = user_pkt.data;
2108#if FF_API_DESTRUCT_PACKET
2109FF_DISABLE_DEPRECATION_WARNINGS
2110 avpkt->destruct = user_pkt.destruct;
2111FF_ENABLE_DEPRECATION_WARNINGS
2112#endif
2113 } else {
2114 if (av_dup_packet(avpkt) < 0) {
2115 ret = AVERROR(ENOMEM);
2116 }
2117 }
2118 }
2119
2120 if (!ret) {
2121 if (!*got_packet_ptr)
2122 avpkt->size = 0;
2123 else if (!(avctx->codec->capabilities & CODEC_CAP_DELAY))
2124 avpkt->pts = avpkt->dts = frame->pts;
2125
2126 if (needs_realloc && avpkt->data) {
2127 ret = av_buffer_realloc(&avpkt->buf, avpkt->size + FF_INPUT_BUFFER_PADDING_SIZE);
2128 if (ret >= 0)
2129 avpkt->data = avpkt->buf->data;
2130 }
2131
2132 avctx->frame_number++;
2133 }
2134
2135 if (ret < 0 || !*got_packet_ptr)
2136 av_free_packet(avpkt);
2137 else
2138 av_packet_merge_side_data(avpkt);
2139
2140 emms_c();
2141 return ret;
2142}
2143
2144int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size,
2145 const AVSubtitle *sub)
2146{
2147 int ret;
2148 if (sub->start_display_time) {
2149 av_log(avctx, AV_LOG_ERROR, "start_display_time must be 0.\n");
2150 return -1;
2151 }
2152
2153 ret = avctx->codec->encode_sub(avctx, buf, buf_size, sub);
2154 avctx->frame_number++;
2155 return ret;
2156}
2157
2158/**
2159 * Attempt to guess proper monotonic timestamps for decoded video frames
2160 * which might have incorrect times. Input timestamps may wrap around, in
2161 * which case the output will as well.
2162 *
2163 * @param pts the pts field of the decoded AVPacket, as passed through
2164 * AVFrame.pkt_pts
2165 * @param dts the dts field of the decoded AVPacket
2166 * @return one of the input values, may be AV_NOPTS_VALUE
2167 */
2168static int64_t guess_correct_pts(AVCodecContext *ctx,
2169 int64_t reordered_pts, int64_t dts)
2170{
2171 int64_t pts = AV_NOPTS_VALUE;
2172
2173 if (dts != AV_NOPTS_VALUE) {
2174 ctx->pts_correction_num_faulty_dts += dts <= ctx->pts_correction_last_dts;
2175 ctx->pts_correction_last_dts = dts;
2176 } else if (reordered_pts != AV_NOPTS_VALUE)
2177 ctx->pts_correction_last_dts = reordered_pts;
2178
2179 if (reordered_pts != AV_NOPTS_VALUE) {
2180 ctx->pts_correction_num_faulty_pts += reordered_pts <= ctx->pts_correction_last_pts;
2181 ctx->pts_correction_last_pts = reordered_pts;
2182 } else if(dts != AV_NOPTS_VALUE)
2183 ctx->pts_correction_last_pts = dts;
2184
2185 if ((ctx->pts_correction_num_faulty_pts<=ctx->pts_correction_num_faulty_dts || dts == AV_NOPTS_VALUE)
2186 && reordered_pts != AV_NOPTS_VALUE)
2187 pts = reordered_pts;
2188 else
2189 pts = dts;
2190
2191 return pts;
2192}
2193
2194static int apply_param_change(AVCodecContext *avctx, AVPacket *avpkt)
2195{
2196 int size = 0, ret;
2197 const uint8_t *data;
2198 uint32_t flags;
2199
2200 data = av_packet_get_side_data(avpkt, AV_PKT_DATA_PARAM_CHANGE, &size);
2201 if (!data)
2202 return 0;
2203
2204 if (!(avctx->codec->capabilities & CODEC_CAP_PARAM_CHANGE)) {
2205 av_log(avctx, AV_LOG_ERROR, "This decoder does not support parameter "
2206 "changes, but PARAM_CHANGE side data was sent to it.\n");
2207 return AVERROR(EINVAL);
2208 }
2209
2210 if (size < 4)
2211 goto fail;
2212
2213 flags = bytestream_get_le32(&data);
2214 size -= 4;
2215
2216 if (flags & AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_COUNT) {
2217 if (size < 4)
2218 goto fail;
2219 avctx->channels = bytestream_get_le32(&data);
2220 size -= 4;
2221 }
2222 if (flags & AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_LAYOUT) {
2223 if (size < 8)
2224 goto fail;
2225 avctx->channel_layout = bytestream_get_le64(&data);
2226 size -= 8;
2227 }
2228 if (flags & AV_SIDE_DATA_PARAM_CHANGE_SAMPLE_RATE) {
2229 if (size < 4)
2230 goto fail;
2231 avctx->sample_rate = bytestream_get_le32(&data);
2232 size -= 4;
2233 }
2234 if (flags & AV_SIDE_DATA_PARAM_CHANGE_DIMENSIONS) {
2235 if (size < 8)
2236 goto fail;
2237 avctx->width = bytestream_get_le32(&data);
2238 avctx->height = bytestream_get_le32(&data);
2239 size -= 8;
2240 ret = ff_set_dimensions(avctx, avctx->width, avctx->height);
2241 if (ret < 0)
2242 return ret;
2243 }
2244
2245 return 0;
2246fail:
2247 av_log(avctx, AV_LOG_ERROR, "PARAM_CHANGE side data too small.\n");
2248 return AVERROR_INVALIDDATA;
2249}
2250
2251static int add_metadata_from_side_data(AVCodecContext *avctx, AVFrame *frame)
2252{
2253 int size;
2254 const uint8_t *side_metadata;
2255
2256 AVDictionary **frame_md = avpriv_frame_get_metadatap(frame);
2257
2258 side_metadata = av_packet_get_side_data(avctx->internal->pkt,
2259 AV_PKT_DATA_STRINGS_METADATA, &size);
2260 return av_packet_unpack_dictionary(side_metadata, size, frame_md);
2261}
2262
2263static int unrefcount_frame(AVCodecInternal *avci, AVFrame *frame)
2264{
2265 int ret;
2266
2267 /* move the original frame to our backup */
2268 av_frame_unref(avci->to_free);
2269 av_frame_move_ref(avci->to_free, frame);
2270
2271 /* now copy everything except the AVBufferRefs back
2272 * note that we make a COPY of the side data, so calling av_frame_free() on
2273 * the caller's frame will work properly */
2274 ret = av_frame_copy_props(frame, avci->to_free);
2275 if (ret < 0)
2276 return ret;
2277
2278 memcpy(frame->data, avci->to_free->data, sizeof(frame->data));
2279 memcpy(frame->linesize, avci->to_free->linesize, sizeof(frame->linesize));
2280 if (avci->to_free->extended_data != avci->to_free->data) {
2281 int planes = av_frame_get_channels(avci->to_free);
2282 int size = planes * sizeof(*frame->extended_data);
2283
2284 if (!size) {
2285 av_frame_unref(frame);
2286 return AVERROR_BUG;
2287 }
2288
2289 frame->extended_data = av_malloc(size);
2290 if (!frame->extended_data) {
2291 av_frame_unref(frame);
2292 return AVERROR(ENOMEM);
2293 }
2294 memcpy(frame->extended_data, avci->to_free->extended_data,
2295 size);
2296 } else
2297 frame->extended_data = frame->data;
2298
2299 frame->format = avci->to_free->format;
2300 frame->width = avci->to_free->width;
2301 frame->height = avci->to_free->height;
2302 frame->channel_layout = avci->to_free->channel_layout;
2303 frame->nb_samples = avci->to_free->nb_samples;
2304 av_frame_set_channels(frame, av_frame_get_channels(avci->to_free));
2305
2306 return 0;
2307}
2308
2309int attribute_align_arg avcodec_decode_video2(AVCodecContext *avctx, AVFrame *picture,
2310 int *got_picture_ptr,
2311 const AVPacket *avpkt)
2312{
2313 AVCodecInternal *avci = avctx->internal;
2314 int ret;
2315 // copy to ensure we do not change avpkt
2316 AVPacket tmp = *avpkt;
2317
2318 if (!avctx->codec)
2319 return AVERROR(EINVAL);
2320 if (avctx->codec->type != AVMEDIA_TYPE_VIDEO) {
2321 av_log(avctx, AV_LOG_ERROR, "Invalid media type for video\n");
2322 return AVERROR(EINVAL);
2323 }
2324
2325 *got_picture_ptr = 0;
2326 if ((avctx->coded_width || avctx->coded_height) && av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx))
2327 return AVERROR(EINVAL);
2328
2329 av_frame_unref(picture);
2330
2331 if ((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size || (avctx->active_thread_type & FF_THREAD_FRAME)) {
2332 int did_split = av_packet_split_side_data(&tmp);
2333 ret = apply_param_change(avctx, &tmp);
2334 if (ret < 0) {
2335 av_log(avctx, AV_LOG_ERROR, "Error applying parameter changes.\n");
2336 if (avctx->err_recognition & AV_EF_EXPLODE)
2337 goto fail;
2338 }
2339
2340 avctx->internal->pkt = &tmp;
2341 if (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME)
2342 ret = ff_thread_decode_frame(avctx, picture, got_picture_ptr,
2343 &tmp);
2344 else {
2345 ret = avctx->codec->decode(avctx, picture, got_picture_ptr,
2346 &tmp);
2347 picture->pkt_dts = avpkt->dts;
2348
2349 if(!avctx->has_b_frames){
2350 av_frame_set_pkt_pos(picture, avpkt->pos);
2351 }
2352 //FIXME these should be under if(!avctx->has_b_frames)
2353 /* get_buffer is supposed to set frame parameters */
2354 if (!(avctx->codec->capabilities & CODEC_CAP_DR1)) {
2355 if (!picture->sample_aspect_ratio.num) picture->sample_aspect_ratio = avctx->sample_aspect_ratio;
2356 if (!picture->width) picture->width = avctx->width;
2357 if (!picture->height) picture->height = avctx->height;
2358 if (picture->format == AV_PIX_FMT_NONE) picture->format = avctx->pix_fmt;
2359 }
2360 }
2361 add_metadata_from_side_data(avctx, picture);
2362
2363fail:
2364 emms_c(); //needed to avoid an emms_c() call before every return;
2365
2366 avctx->internal->pkt = NULL;
2367 if (did_split) {
2368 av_packet_free_side_data(&tmp);
2369 if(ret == tmp.size)
2370 ret = avpkt->size;
2371 }
2372
2373 if (*got_picture_ptr) {
2374 if (!avctx->refcounted_frames) {
2375 int err = unrefcount_frame(avci, picture);
2376 if (err < 0)
2377 return err;
2378 }
2379
2380 avctx->frame_number++;
2381 av_frame_set_best_effort_timestamp(picture,
2382 guess_correct_pts(avctx,
2383 picture->pkt_pts,
2384 picture->pkt_dts));
2385 } else
2386 av_frame_unref(picture);
2387 } else
2388 ret = 0;
2389
2390 /* many decoders assign whole AVFrames, thus overwriting extended_data;
2391 * make sure it's set correctly */
2392 av_assert0(!picture->extended_data || picture->extended_data == picture->data);
2393
f6fa7814
DM		 2394#if FF_API_AVCTX_TIMEBASE
2395 if (avctx->framerate.num > 0 && avctx->framerate.den > 0)
2396 avctx->time_base = av_inv_q(av_mul_q(avctx->framerate, (AVRational){avctx->ticks_per_frame, 1}));
2397#endif
2398
2ba45a60
DM		 2399 return ret;
2400}
2401
2402#if FF_API_OLD_DECODE_AUDIO
2403int attribute_align_arg avcodec_decode_audio3(AVCodecContext *avctx, int16_t *samples,
2404 int *frame_size_ptr,
2405 AVPacket *avpkt)
2406{
2407 AVFrame *frame = av_frame_alloc();
2408 int ret, got_frame = 0;
2409
2410 if (!frame)
2411 return AVERROR(ENOMEM);
2412 if (avctx->get_buffer != avcodec_default_get_buffer) {
2413 av_log(avctx, AV_LOG_ERROR, "Custom get_buffer() for use with"
2414 "avcodec_decode_audio3() detected. Overriding with avcodec_default_get_buffer\n");
2415 av_log(avctx, AV_LOG_ERROR, "Please port your application to "
2416 "avcodec_decode_audio4()\n");
2417 avctx->get_buffer = avcodec_default_get_buffer;
2418 avctx->release_buffer = avcodec_default_release_buffer;
2419 }
2420
2421 ret = avcodec_decode_audio4(avctx, frame, &got_frame, avpkt);
2422
2423 if (ret >= 0 && got_frame) {
2424 int ch, plane_size;
2425 int planar = av_sample_fmt_is_planar(avctx->sample_fmt);
2426 int data_size = av_samples_get_buffer_size(&plane_size, avctx->channels,
2427 frame->nb_samples,
2428 avctx->sample_fmt, 1);
2429 if (*frame_size_ptr < data_size) {
2430 av_log(avctx, AV_LOG_ERROR, "output buffer size is too small for "
2431 "the current frame (%d < %d)\n", *frame_size_ptr, data_size);
2432 av_frame_free(&frame);
2433 return AVERROR(EINVAL);
2434 }
2435
2436 memcpy(samples, frame->extended_data[0], plane_size);
2437
2438 if (planar && avctx->channels > 1) {
2439 uint8_t *out = ((uint8_t *)samples) + plane_size;
2440 for (ch = 1; ch < avctx->channels; ch++) {
2441 memcpy(out, frame->extended_data[ch], plane_size);
2442 out += plane_size;
2443 }
2444 }
2445 *frame_size_ptr = data_size;
2446 } else {
2447 *frame_size_ptr = 0;
2448 }
2449 av_frame_free(&frame);
2450 return ret;
2451}
2452
2453#endif
2454
2455int attribute_align_arg avcodec_decode_audio4(AVCodecContext *avctx,
2456 AVFrame *frame,
2457 int *got_frame_ptr,
2458 const AVPacket *avpkt)
2459{
2460 AVCodecInternal *avci = avctx->internal;
2461 int ret = 0;
2462
2463 *got_frame_ptr = 0;
2464
2465 if (!avpkt->data && avpkt->size) {
2466 av_log(avctx, AV_LOG_ERROR, "invalid packet: NULL data, size != 0\n");
2467 return AVERROR(EINVAL);
2468 }
2469 if (!avctx->codec)
2470 return AVERROR(EINVAL);
2471 if (avctx->codec->type != AVMEDIA_TYPE_AUDIO) {
2472 av_log(avctx, AV_LOG_ERROR, "Invalid media type for audio\n");
2473 return AVERROR(EINVAL);
2474 }
2475
2476 av_frame_unref(frame);
2477
2478 if ((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size || (avctx->active_thread_type & FF_THREAD_FRAME)) {
2479 uint8_t *side;
2480 int side_size;
2481 uint32_t discard_padding = 0;
f6fa7814
DM		 2482 uint8_t skip_reason = 0;
2483 uint8_t discard_reason = 0;
2ba45a60
DM		 2484 // copy to ensure we do not change avpkt
2485 AVPacket tmp = *avpkt;
2486 int did_split = av_packet_split_side_data(&tmp);
2487 ret = apply_param_change(avctx, &tmp);
2488 if (ret < 0) {
2489 av_log(avctx, AV_LOG_ERROR, "Error applying parameter changes.\n");
2490 if (avctx->err_recognition & AV_EF_EXPLODE)
2491 goto fail;
2492 }
2493
2494 avctx->internal->pkt = &tmp;
2495 if (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME)
2496 ret = ff_thread_decode_frame(avctx, frame, got_frame_ptr, &tmp);
2497 else {
2498 ret = avctx->codec->decode(avctx, frame, got_frame_ptr, &tmp);
2499 frame->pkt_dts = avpkt->dts;
2500 }
2501 if (ret >= 0 && *got_frame_ptr) {
2502 add_metadata_from_side_data(avctx, frame);
2503 avctx->frame_number++;
2504 av_frame_set_best_effort_timestamp(frame,
2505 guess_correct_pts(avctx,
2506 frame->pkt_pts,
2507 frame->pkt_dts));
2508 if (frame->format == AV_SAMPLE_FMT_NONE)
2509 frame->format = avctx->sample_fmt;
2510 if (!frame->channel_layout)
2511 frame->channel_layout = avctx->channel_layout;
2512 if (!av_frame_get_channels(frame))
2513 av_frame_set_channels(frame, avctx->channels);
2514 if (!frame->sample_rate)
2515 frame->sample_rate = avctx->sample_rate;
2516 }
2517
2518 side= av_packet_get_side_data(avctx->internal->pkt, AV_PKT_DATA_SKIP_SAMPLES, &side_size);
2519 if(side && side_size>=10) {
2520 avctx->internal->skip_samples = AV_RL32(side);
2521 av_log(avctx, AV_LOG_DEBUG, "skip %d samples due to side data\n",
2522 avctx->internal->skip_samples);
2523 discard_padding = AV_RL32(side + 4);
f6fa7814
DM		 2524 skip_reason = AV_RL8(side + 8);
2525 discard_reason = AV_RL8(side + 9);
2ba45a60 2526 }
f6fa7814
DM		 2527 if (avctx->internal->skip_samples && *got_frame_ptr &&
2528 !(avctx->flags2 & CODEC_FLAG2_SKIP_MANUAL)) {
2ba45a60
DM		 2529 if(frame->nb_samples <= avctx->internal->skip_samples){
2530 *got_frame_ptr = 0;
2531 avctx->internal->skip_samples -= frame->nb_samples;
2532 av_log(avctx, AV_LOG_DEBUG, "skip whole frame, skip left: %d\n",
2533 avctx->internal->skip_samples);
2534 } else {
2535 av_samples_copy(frame->extended_data, frame->extended_data, 0, avctx->internal->skip_samples,
2536 frame->nb_samples - avctx->internal->skip_samples, avctx->channels, frame->format);
2537 if(avctx->pkt_timebase.num && avctx->sample_rate) {
2538 int64_t diff_ts = av_rescale_q(avctx->internal->skip_samples,
2539 (AVRational){1, avctx->sample_rate},
2540 avctx->pkt_timebase);
2541 if(frame->pkt_pts!=AV_NOPTS_VALUE)
2542 frame->pkt_pts += diff_ts;
2543 if(frame->pkt_dts!=AV_NOPTS_VALUE)
2544 frame->pkt_dts += diff_ts;
2545 if (av_frame_get_pkt_duration(frame) >= diff_ts)
2546 av_frame_set_pkt_duration(frame, av_frame_get_pkt_duration(frame) - diff_ts);
2547 } else {
2548 av_log(avctx, AV_LOG_WARNING, "Could not update timestamps for skipped samples.\n");
2549 }
2550 av_log(avctx, AV_LOG_DEBUG, "skip %d/%d samples\n",
2551 avctx->internal->skip_samples, frame->nb_samples);
2552 frame->nb_samples -= avctx->internal->skip_samples;
2553 avctx->internal->skip_samples = 0;
2554 }
2555 }
2556
f6fa7814
DM		 2557 if (discard_padding > 0 && discard_padding <= frame->nb_samples && *got_frame_ptr &&
2558 !(avctx->flags2 & CODEC_FLAG2_SKIP_MANUAL)) {
2ba45a60
DM		 2559 if (discard_padding == frame->nb_samples) {
2560 *got_frame_ptr = 0;
2561 } else {
2562 if(avctx->pkt_timebase.num && avctx->sample_rate) {
2563 int64_t diff_ts = av_rescale_q(frame->nb_samples - discard_padding,
2564 (AVRational){1, avctx->sample_rate},
2565 avctx->pkt_timebase);
2566 if (av_frame_get_pkt_duration(frame) >= diff_ts)
2567 av_frame_set_pkt_duration(frame, av_frame_get_pkt_duration(frame) - diff_ts);
2568 } else {
2569 av_log(avctx, AV_LOG_WARNING, "Could not update timestamps for discarded samples.\n");
2570 }
2571 av_log(avctx, AV_LOG_DEBUG, "discard %d/%d samples\n",
2572 discard_padding, frame->nb_samples);
2573 frame->nb_samples -= discard_padding;
2574 }
2575 }
f6fa7814
DM		 2576
2577 if ((avctx->flags2 & CODEC_FLAG2_SKIP_MANUAL) && *got_frame_ptr) {
2578 AVFrameSideData *fside = av_frame_new_side_data(frame, AV_FRAME_DATA_SKIP_SAMPLES, 10);
2579 if (fside) {
2580 AV_WL32(fside->data, avctx->internal->skip_samples);
2581 AV_WL32(fside->data + 4, discard_padding);
2582 AV_WL8(fside->data + 8, skip_reason);
2583 AV_WL8(fside->data + 9, discard_reason);
2584 avctx->internal->skip_samples = 0;
2585 }
2586 }
2ba45a60
DM		 2587fail:
2588 avctx->internal->pkt = NULL;
2589 if (did_split) {
2590 av_packet_free_side_data(&tmp);
2591 if(ret == tmp.size)
2592 ret = avpkt->size;
2593 }
2594
2595 if (ret >= 0 && *got_frame_ptr) {
2596 if (!avctx->refcounted_frames) {
2597 int err = unrefcount_frame(avci, frame);
2598 if (err < 0)
2599 return err;
2600 }
2601 } else
2602 av_frame_unref(frame);
2603 }
2604
2605 return ret;
2606}
2607
2608#define UTF8_MAX_BYTES 4 /* 5 and 6 bytes sequences should not be used */
2609static int recode_subtitle(AVCodecContext *avctx,
2610 AVPacket *outpkt, const AVPacket *inpkt)
2611{
2612#if CONFIG_ICONV
2613 iconv_t cd = (iconv_t)-1;
2614 int ret = 0;
2615 char *inb, *outb;
2616 size_t inl, outl;
2617 AVPacket tmp;
2618#endif
2619
2620 if (avctx->sub_charenc_mode != FF_SUB_CHARENC_MODE_PRE_DECODER || inpkt->size == 0)
2621 return 0;
2622
2623#if CONFIG_ICONV
2624 cd = iconv_open("UTF-8", avctx->sub_charenc);
2625 av_assert0(cd != (iconv_t)-1);
2626
2627 inb = inpkt->data;
2628 inl = inpkt->size;
2629
2630 if (inl >= INT_MAX / UTF8_MAX_BYTES - FF_INPUT_BUFFER_PADDING_SIZE) {
2631 av_log(avctx, AV_LOG_ERROR, "Subtitles packet is too big for recoding\n");
2632 ret = AVERROR(ENOMEM);
2633 goto end;
2634 }
2635
2636 ret = av_new_packet(&tmp, inl * UTF8_MAX_BYTES);
2637 if (ret < 0)
2638 goto end;
2639 outpkt->buf = tmp.buf;
2640 outpkt->data = tmp.data;
2641 outpkt->size = tmp.size;
2642 outb = outpkt->data;
2643 outl = outpkt->size;
2644
2645 if (iconv(cd, &inb, &inl, &outb, &outl) == (size_t)-1 ||
2646 iconv(cd, NULL, NULL, &outb, &outl) == (size_t)-1 ||
2647 outl >= outpkt->size || inl != 0) {
f6fa7814 2648 ret = FFMIN(AVERROR(errno), -1);
2ba45a60
DM		 2649 av_log(avctx, AV_LOG_ERROR, "Unable to recode subtitle event \"%s\" "
2650 "from %s to UTF-8\n", inpkt->data, avctx->sub_charenc);
2651 av_free_packet(&tmp);
2ba45a60
DM		 2652 goto end;
2653 }
2654 outpkt->size -= outl;
2655 memset(outpkt->data + outpkt->size, 0, outl);
2656
2657end:
2658 if (cd != (iconv_t)-1)
2659 iconv_close(cd);
2660 return ret;
2661#else
2662 av_log(avctx, AV_LOG_ERROR, "requesting subtitles recoding without iconv");
2663 return AVERROR(EINVAL);
2664#endif
2665}
2666
2667static int utf8_check(const uint8_t *str)
2668{
2669 const uint8_t *byte;
2670 uint32_t codepoint, min;
2671
2672 while (*str) {
2673 byte = str;
2674 GET_UTF8(codepoint, *(byte++), return 0;);
2675 min = byte - str == 1 ? 0 : byte - str == 2 ? 0x80 :
2676 1 << (5 * (byte - str) - 4);
2677 if (codepoint < min || codepoint >= 0x110000 ||
2678 codepoint == 0xFFFE /* BOM */ ||
2679 codepoint >= 0xD800 && codepoint <= 0xDFFF /* surrogates */)
2680 return 0;
2681 str = byte;
2682 }
2683 return 1;
2684}
2685
2686int avcodec_decode_subtitle2(AVCodecContext *avctx, AVSubtitle *sub,
2687 int *got_sub_ptr,
2688 AVPacket *avpkt)
2689{
2690 int i, ret = 0;
2691
2692 if (!avpkt->data && avpkt->size) {
2693 av_log(avctx, AV_LOG_ERROR, "invalid packet: NULL data, size != 0\n");
2694 return AVERROR(EINVAL);
2695 }
2696 if (!avctx->codec)
2697 return AVERROR(EINVAL);
2698 if (avctx->codec->type != AVMEDIA_TYPE_SUBTITLE) {
2699 av_log(avctx, AV_LOG_ERROR, "Invalid media type for subtitles\n");
2700 return AVERROR(EINVAL);
2701 }
2702
2703 *got_sub_ptr = 0;
f6fa7814 2704 get_subtitle_defaults(sub);
2ba45a60
DM		 2705
2706 if ((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size) {
2707 AVPacket pkt_recoded;
2708 AVPacket tmp = *avpkt;
2709 int did_split = av_packet_split_side_data(&tmp);
2710 //apply_param_change(avctx, &tmp);
2711
2712 if (did_split) {
2713 /* FFMIN() prevents overflow in case the packet wasn't allocated with
2714 * proper padding.
2715 * If the side data is smaller than the buffer padding size, the
2716 * remaining bytes should have already been filled with zeros by the
2717 * original packet allocation anyway. */
2718 memset(tmp.data + tmp.size, 0,
2719 FFMIN(avpkt->size - tmp.size, FF_INPUT_BUFFER_PADDING_SIZE));
2720 }
2721
2722 pkt_recoded = tmp;
2723 ret = recode_subtitle(avctx, &pkt_recoded, &tmp);
2724 if (ret < 0) {
2725 *got_sub_ptr = 0;
2726 } else {
2727 avctx->internal->pkt = &pkt_recoded;
2728
2729 if (avctx->pkt_timebase.den && avpkt->pts != AV_NOPTS_VALUE)
2730 sub->pts = av_rescale_q(avpkt->pts,
2731 avctx->pkt_timebase, AV_TIME_BASE_Q);
2732 ret = avctx->codec->decode(avctx, sub, got_sub_ptr, &pkt_recoded);
2733 av_assert1((ret >= 0) >= !!*got_sub_ptr &&
2734 !!*got_sub_ptr >= !!sub->num_rects);
2735
2736 if (sub->num_rects && !sub->end_display_time && avpkt->duration &&
2737 avctx->pkt_timebase.num) {
2738 AVRational ms = { 1, 1000 };
2739 sub->end_display_time = av_rescale_q(avpkt->duration,
2740 avctx->pkt_timebase, ms);
2741 }
2742
2743 for (i = 0; i < sub->num_rects; i++) {
2744 if (sub->rects[i]->ass && !utf8_check(sub->rects[i]->ass)) {
2745 av_log(avctx, AV_LOG_ERROR,
2746 "Invalid UTF-8 in decoded subtitles text; "
2747 "maybe missing -sub_charenc option\n");
2748 avsubtitle_free(sub);
2749 return AVERROR_INVALIDDATA;
2750 }
2751 }
2752
2753 if (tmp.data != pkt_recoded.data) { // did we recode?
2754 /* prevent from destroying side data from original packet */
2755 pkt_recoded.side_data = NULL;
2756 pkt_recoded.side_data_elems = 0;
2757
2758 av_free_packet(&pkt_recoded);
2759 }
2760 if (avctx->codec_descriptor->props & AV_CODEC_PROP_BITMAP_SUB)
2761 sub->format = 0;
2762 else if (avctx->codec_descriptor->props & AV_CODEC_PROP_TEXT_SUB)
2763 sub->format = 1;
2764 avctx->internal->pkt = NULL;
2765 }
2766
2767 if (did_split) {
2768 av_packet_free_side_data(&tmp);
2769 if(ret == tmp.size)
2770 ret = avpkt->size;
2771 }
2772
2773 if (*got_sub_ptr)
2774 avctx->frame_number++;
2775 }
2776
2777 return ret;
2778}
2779
2780void avsubtitle_free(AVSubtitle *sub)
2781{
2782 int i;
2783
2784 for (i = 0; i < sub->num_rects; i++) {
2785 av_freep(&sub->rects[i]->pict.data[0]);
2786 av_freep(&sub->rects[i]->pict.data[1]);
2787 av_freep(&sub->rects[i]->pict.data[2]);
2788 av_freep(&sub->rects[i]->pict.data[3]);
2789 av_freep(&sub->rects[i]->text);
2790 av_freep(&sub->rects[i]->ass);
2791 av_freep(&sub->rects[i]);
2792 }
2793
2794 av_freep(&sub->rects);
2795
2796 memset(sub, 0, sizeof(AVSubtitle));
2797}
2798
2799av_cold int avcodec_close(AVCodecContext *avctx)
2800{
2801 if (!avctx)
2802 return 0;
2803
2804 if (avcodec_is_open(avctx)) {
2805 FramePool *pool = avctx->internal->pool;
2806 int i;
2807 if (CONFIG_FRAME_THREAD_ENCODER &&
2808 avctx->internal->frame_thread_encoder && avctx->thread_count > 1) {
2809 ff_frame_thread_encoder_free(avctx);
2810 }
2811 if (HAVE_THREADS && avctx->internal->thread_ctx)
2812 ff_thread_free(avctx);
2813 if (avctx->codec && avctx->codec->close)
2814 avctx->codec->close(avctx);
2815 avctx->coded_frame = NULL;
2816 avctx->internal->byte_buffer_size = 0;
2817 av_freep(&avctx->internal->byte_buffer);
2818 av_frame_free(&avctx->internal->to_free);
2819 for (i = 0; i < FF_ARRAY_ELEMS(pool->pools); i++)
2820 av_buffer_pool_uninit(&pool->pools[i]);
2821 av_freep(&avctx->internal->pool);
2822
2823 if (avctx->hwaccel && avctx->hwaccel->uninit)
2824 avctx->hwaccel->uninit(avctx);
2825 av_freep(&avctx->internal->hwaccel_priv_data);
2826
2827 av_freep(&avctx->internal);
2828 }
2829
2830 if (avctx->priv_data && avctx->codec && avctx->codec->priv_class)
2831 av_opt_free(avctx->priv_data);
2832 av_opt_free(avctx);
2833 av_freep(&avctx->priv_data);
2834 if (av_codec_is_encoder(avctx->codec))
2835 av_freep(&avctx->extradata);
2836 avctx->codec = NULL;
2837 avctx->active_thread_type = 0;
2838
2839 return 0;
2840}
2841
2842static enum AVCodecID remap_deprecated_codec_id(enum AVCodecID id)
2843{
2844 switch(id){
2845 //This is for future deprecatec codec ids, its empty since
2846 //last major bump but will fill up again over time, please don't remove it
2847// case AV_CODEC_ID_UTVIDEO_DEPRECATED: return AV_CODEC_ID_UTVIDEO;
2848 case AV_CODEC_ID_BRENDER_PIX_DEPRECATED : return AV_CODEC_ID_BRENDER_PIX;
2849 case AV_CODEC_ID_OPUS_DEPRECATED : return AV_CODEC_ID_OPUS;
2850 case AV_CODEC_ID_TAK_DEPRECATED : return AV_CODEC_ID_TAK;
2851 case AV_CODEC_ID_PAF_AUDIO_DEPRECATED : return AV_CODEC_ID_PAF_AUDIO;
2852 case AV_CODEC_ID_PCM_S24LE_PLANAR_DEPRECATED : return AV_CODEC_ID_PCM_S24LE_PLANAR;
2853 case AV_CODEC_ID_PCM_S32LE_PLANAR_DEPRECATED : return AV_CODEC_ID_PCM_S32LE_PLANAR;
2854 case AV_CODEC_ID_ADPCM_VIMA_DEPRECATED : return AV_CODEC_ID_ADPCM_VIMA;
2855 case AV_CODEC_ID_ESCAPE130_DEPRECATED : return AV_CODEC_ID_ESCAPE130;
2856 case AV_CODEC_ID_EXR_DEPRECATED : return AV_CODEC_ID_EXR;
2857 case AV_CODEC_ID_G2M_DEPRECATED : return AV_CODEC_ID_G2M;
2858 case AV_CODEC_ID_PAF_VIDEO_DEPRECATED : return AV_CODEC_ID_PAF_VIDEO;
2859 case AV_CODEC_ID_WEBP_DEPRECATED : return AV_CODEC_ID_WEBP;
2860 case AV_CODEC_ID_HEVC_DEPRECATED : return AV_CODEC_ID_HEVC;
2861 case AV_CODEC_ID_MVC1_DEPRECATED : return AV_CODEC_ID_MVC1;
2862 case AV_CODEC_ID_MVC2_DEPRECATED : return AV_CODEC_ID_MVC2;
2863 case AV_CODEC_ID_SANM_DEPRECATED : return AV_CODEC_ID_SANM;
2864 case AV_CODEC_ID_SGIRLE_DEPRECATED : return AV_CODEC_ID_SGIRLE;
2865 case AV_CODEC_ID_VP7_DEPRECATED : return AV_CODEC_ID_VP7;
2866 default : return id;
2867 }
2868}
2869
2870static AVCodec *find_encdec(enum AVCodecID id, int encoder)
2871{
2872 AVCodec *p, *experimental = NULL;
2873 p = first_avcodec;
2874 id= remap_deprecated_codec_id(id);
2875 while (p) {
2876 if ((encoder ? av_codec_is_encoder(p) : av_codec_is_decoder(p)) &&
2877 p->id == id) {
2878 if (p->capabilities & CODEC_CAP_EXPERIMENTAL && !experimental) {
2879 experimental = p;
2880 } else
2881 return p;
2882 }
2883 p = p->next;
2884 }
2885 return experimental;
2886}
2887
2888AVCodec *avcodec_find_encoder(enum AVCodecID id)
2889{
2890 return find_encdec(id, 1);
2891}
2892
2893AVCodec *avcodec_find_encoder_by_name(const char *name)
2894{
2895 AVCodec *p;
2896 if (!name)
2897 return NULL;
2898 p = first_avcodec;
2899 while (p) {
2900 if (av_codec_is_encoder(p) && strcmp(name, p->name) == 0)
2901 return p;
2902 p = p->next;
2903 }
2904 return NULL;
2905}
2906
2907AVCodec *avcodec_find_decoder(enum AVCodecID id)
2908{
2909 return find_encdec(id, 0);
2910}
2911
2912AVCodec *avcodec_find_decoder_by_name(const char *name)
2913{
2914 AVCodec *p;
2915 if (!name)
2916 return NULL;
2917 p = first_avcodec;
2918 while (p) {
2919 if (av_codec_is_decoder(p) && strcmp(name, p->name) == 0)
2920 return p;
2921 p = p->next;
2922 }
2923 return NULL;
2924}
2925
2926const char *avcodec_get_name(enum AVCodecID id)
2927{
2928 const AVCodecDescriptor *cd;
2929 AVCodec *codec;
2930
2931 if (id == AV_CODEC_ID_NONE)
2932 return "none";
2933 cd = avcodec_descriptor_get(id);
2934 if (cd)
2935 return cd->name;
2936 av_log(NULL, AV_LOG_WARNING, "Codec 0x%x is not in the full list.\n", id);
2937 codec = avcodec_find_decoder(id);
2938 if (codec)
2939 return codec->name;
2940 codec = avcodec_find_encoder(id);
2941 if (codec)
2942 return codec->name;
2943 return "unknown_codec";
2944}
2945
2946size_t av_get_codec_tag_string(char *buf, size_t buf_size, unsigned int codec_tag)
2947{
2948 int i, len, ret = 0;
2949
2950#define TAG_PRINT(x) \
2951 (((x) >= '0' && (x) <= '9') || \
2952 ((x) >= 'a' && (x) <= 'z') || ((x) >= 'A' && (x) <= 'Z') || \
2953 ((x) == '.' || (x) == ' ' || (x) == '-' || (x) == '_'))
2954
2955 for (i = 0; i < 4; i++) {
2956 len = snprintf(buf, buf_size,
2957 TAG_PRINT(codec_tag & 0xFF) ? "%c" : "[%d]", codec_tag & 0xFF);
2958 buf += len;
2959 buf_size = buf_size > len ? buf_size - len : 0;
2960 ret += len;
2961 codec_tag >>= 8;
2962 }
2963 return ret;
2964}
2965
2966void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)
2967{
2968 const char *codec_type;
2969 const char *codec_name;
2970 const char *profile = NULL;
2971 const AVCodec *p;
2972 int bitrate;
f6fa7814 2973 int new_line = 0;
2ba45a60 2974 AVRational display_aspect_ratio;
f6fa7814 2975 const char *separator = enc->dump_separator ? (const char *)enc->dump_separator : ", ";
2ba45a60
DM		 2976
2977 if (!buf || buf_size <= 0)
2978 return;
2979 codec_type = av_get_media_type_string(enc->codec_type);
2980 codec_name = avcodec_get_name(enc->codec_id);
2981 if (enc->profile != FF_PROFILE_UNKNOWN) {
2982 if (enc->codec)
2983 p = enc->codec;
2984 else
2985 p = encode ? avcodec_find_encoder(enc->codec_id) :
2986 avcodec_find_decoder(enc->codec_id);
2987 if (p)
2988 profile = av_get_profile_name(p, enc->profile);
2989 }
2990
2991 snprintf(buf, buf_size, "%s: %s", codec_type ? codec_type : "unknown",
2992 codec_name);
2993 buf[0] ^= 'a' ^ 'A'; /* first letter in uppercase */
2994
2995 if (enc->codec && strcmp(enc->codec->name, codec_name))
2996 snprintf(buf + strlen(buf), buf_size - strlen(buf), " (%s)", enc->codec->name);
2997
2998 if (profile)
2999 snprintf(buf + strlen(buf), buf_size - strlen(buf), " (%s)", profile);
f6fa7814 3000
2ba45a60
DM		 3001 if (enc->codec_tag) {
3002 char tag_buf[32];
3003 av_get_codec_tag_string(tag_buf, sizeof(tag_buf), enc->codec_tag);
3004 snprintf(buf + strlen(buf), buf_size - strlen(buf),
3005 " (%s / 0x%04X)", tag_buf, enc->codec_tag);
3006 }
3007
3008 switch (enc->codec_type) {
3009 case AVMEDIA_TYPE_VIDEO:
f6fa7814 3010 {
2ba45a60 3011 char detail[256] = "(";
f6fa7814
DM		 3012
3013 av_strlcat(buf, separator, buf_size);
3014
2ba45a60 3015 snprintf(buf + strlen(buf), buf_size - strlen(buf),
f6fa7814 3016 "%s", enc->pix_fmt == AV_PIX_FMT_NONE ? "none" :
2ba45a60 3017 av_get_pix_fmt_name(enc->pix_fmt));
f6fa7814 3018 if (enc->bits_per_raw_sample && enc->pix_fmt != AV_PIX_FMT_NONE &&
2ba45a60
DM		 3019 enc->bits_per_raw_sample <= av_pix_fmt_desc_get(enc->pix_fmt)->comp[0].depth_minus1)
3020 av_strlcatf(detail, sizeof(detail), "%d bpc, ", enc->bits_per_raw_sample);
3021 if (enc->color_range != AVCOL_RANGE_UNSPECIFIED)
f6fa7814
DM		 3022 av_strlcatf(detail, sizeof(detail), "%s, ",
3023 av_color_range_name(enc->color_range));
3024
3025 if (enc->colorspace != AVCOL_SPC_UNSPECIFIED ||
3026 enc->color_primaries != AVCOL_PRI_UNSPECIFIED ||
3027 enc->color_trc != AVCOL_TRC_UNSPECIFIED) {
3028 if (enc->colorspace != (int)enc->color_primaries ||
3029 enc->colorspace != (int)enc->color_trc) {
3030 new_line = 1;
3031 av_strlcatf(detail, sizeof(detail), "%s/%s/%s, ",
3032 av_color_space_name(enc->colorspace),
3033 av_color_primaries_name(enc->color_primaries),
3034 av_color_transfer_name(enc->color_trc));
3035 } else
3036 av_strlcatf(detail, sizeof(detail), "%s, ",
3037 av_get_colorspace_name(enc->colorspace));
3038 }
2ba45a60 3039
f6fa7814
DM		 3040 if (av_log_get_level() >= AV_LOG_DEBUG &&
3041 enc->chroma_sample_location != AVCHROMA_LOC_UNSPECIFIED)
3042 av_strlcatf(detail, sizeof(detail), "%s, ",
3043 av_chroma_location_name(enc->chroma_sample_location));
2ba45a60
DM		 3044
3045 if (strlen(detail) > 1) {
3046 detail[strlen(detail) - 2] = 0;
3047 av_strlcatf(buf, buf_size, "%s)", detail);
3048 }
3049 }
f6fa7814 3050
2ba45a60 3051 if (enc->width) {
f6fa7814
DM		 3052 av_strlcat(buf, new_line ? separator : ", ", buf_size);
3053
2ba45a60 3054 snprintf(buf + strlen(buf), buf_size - strlen(buf),
f6fa7814 3055 "%dx%d",
2ba45a60 3056 enc->width, enc->height);
f6fa7814
DM		 3057
3058 if (av_log_get_level() >= AV_LOG_VERBOSE &&
3059 (enc->width != enc->coded_width ||
3060 enc->height != enc->coded_height))
3061 snprintf(buf + strlen(buf), buf_size - strlen(buf),
3062 " (%dx%d)", enc->coded_width, enc->coded_height);
3063
2ba45a60
DM		 3064 if (enc->sample_aspect_ratio.num) {
3065 av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
3066 enc->width * enc->sample_aspect_ratio.num,
3067 enc->height * enc->sample_aspect_ratio.den,
3068 1024 * 1024);
3069 snprintf(buf + strlen(buf), buf_size - strlen(buf),
3070 " [SAR %d:%d DAR %d:%d]",
3071 enc->sample_aspect_ratio.num, enc->sample_aspect_ratio.den,
3072 display_aspect_ratio.num, display_aspect_ratio.den);
3073 }
3074 if (av_log_get_level() >= AV_LOG_DEBUG) {
3075 int g = av_gcd(enc->time_base.num, enc->time_base.den);
3076 snprintf(buf + strlen(buf), buf_size - strlen(buf),
3077 ", %d/%d",
3078 enc->time_base.num / g, enc->time_base.den / g);
3079 }
3080 }
3081 if (encode) {
3082 snprintf(buf + strlen(buf), buf_size - strlen(buf),
3083 ", q=%d-%d", enc->qmin, enc->qmax);
3084 }
3085 break;
3086 case AVMEDIA_TYPE_AUDIO:
f6fa7814
DM		 3087 av_strlcat(buf, separator, buf_size);
3088
2ba45a60
DM		 3089 if (enc->sample_rate) {
3090 snprintf(buf + strlen(buf), buf_size - strlen(buf),
f6fa7814 3091 "%d Hz, ", enc->sample_rate);
2ba45a60 3092 }
2ba45a60
DM		 3093 av_get_channel_layout_string(buf + strlen(buf), buf_size - strlen(buf), enc->channels, enc->channel_layout);
3094 if (enc->sample_fmt != AV_SAMPLE_FMT_NONE) {
3095 snprintf(buf + strlen(buf), buf_size - strlen(buf),
3096 ", %s", av_get_sample_fmt_name(enc->sample_fmt));
3097 }
3098 if ( enc->bits_per_raw_sample > 0
3099 && enc->bits_per_raw_sample != av_get_bytes_per_sample(enc->sample_fmt) * 8)
3100 snprintf(buf + strlen(buf), buf_size - strlen(buf),
3101 " (%d bit)", enc->bits_per_raw_sample);
3102 break;
3103 case AVMEDIA_TYPE_DATA:
3104 if (av_log_get_level() >= AV_LOG_DEBUG) {
3105 int g = av_gcd(enc->time_base.num, enc->time_base.den);
3106 if (g)
3107 snprintf(buf + strlen(buf), buf_size - strlen(buf),
3108 ", %d/%d",
3109 enc->time_base.num / g, enc->time_base.den / g);
3110 }
3111 break;
3112 case AVMEDIA_TYPE_SUBTITLE:
3113 if (enc->width)
3114 snprintf(buf + strlen(buf), buf_size - strlen(buf),
3115 ", %dx%d", enc->width, enc->height);
3116 break;
3117 default:
3118 return;
3119 }
3120 if (encode) {
3121 if (enc->flags & CODEC_FLAG_PASS1)
3122 snprintf(buf + strlen(buf), buf_size - strlen(buf),
3123 ", pass 1");
3124 if (enc->flags & CODEC_FLAG_PASS2)
3125 snprintf(buf + strlen(buf), buf_size - strlen(buf),
3126 ", pass 2");
3127 }
3128 bitrate = get_bit_rate(enc);
3129 if (bitrate != 0) {
3130 snprintf(buf + strlen(buf), buf_size - strlen(buf),
3131 ", %d kb/s", bitrate / 1000);
3132 } else if (enc->rc_max_rate > 0) {
3133 snprintf(buf + strlen(buf), buf_size - strlen(buf),
3134 ", max. %d kb/s", enc->rc_max_rate / 1000);
3135 }
3136}
3137
3138const char *av_get_profile_name(const AVCodec *codec, int profile)
3139{
3140 const AVProfile *p;
3141 if (profile == FF_PROFILE_UNKNOWN || !codec->profiles)
3142 return NULL;
3143
3144 for (p = codec->profiles; p->profile != FF_PROFILE_UNKNOWN; p++)
3145 if (p->profile == profile)
3146 return p->name;
3147
3148 return NULL;
3149}
3150
3151unsigned avcodec_version(void)
3152{
3153// av_assert0(AV_CODEC_ID_V410==164);
3154 av_assert0(AV_CODEC_ID_PCM_S8_PLANAR==65563);
3155 av_assert0(AV_CODEC_ID_ADPCM_G722==69660);
3156// av_assert0(AV_CODEC_ID_BMV_AUDIO==86071);
3157 av_assert0(AV_CODEC_ID_SRT==94216);
3158 av_assert0(LIBAVCODEC_VERSION_MICRO >= 100);
3159
3160 av_assert0(CODEC_ID_CLLC == AV_CODEC_ID_CLLC);
3161 av_assert0(CODEC_ID_PCM_S8_PLANAR == AV_CODEC_ID_PCM_S8_PLANAR);
3162 av_assert0(CODEC_ID_ADPCM_IMA_APC == AV_CODEC_ID_ADPCM_IMA_APC);
3163 av_assert0(CODEC_ID_ILBC == AV_CODEC_ID_ILBC);
3164 av_assert0(CODEC_ID_SRT == AV_CODEC_ID_SRT);
3165 return LIBAVCODEC_VERSION_INT;
3166}
3167
3168const char *avcodec_configuration(void)
3169{
3170 return FFMPEG_CONFIGURATION;
3171}
3172
3173const char *avcodec_license(void)
3174{
3175#define LICENSE_PREFIX "libavcodec license: "
3176 return LICENSE_PREFIX FFMPEG_LICENSE + sizeof(LICENSE_PREFIX) - 1;
3177}
3178
3179void avcodec_flush_buffers(AVCodecContext *avctx)
3180{
3181 if (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME)
3182 ff_thread_flush(avctx);
3183 else if (avctx->codec->flush)
3184 avctx->codec->flush(avctx);
3185
3186 avctx->pts_correction_last_pts =
3187 avctx->pts_correction_last_dts = INT64_MIN;
3188
3189 if (!avctx->refcounted_frames)
3190 av_frame_unref(avctx->internal->to_free);
3191}
3192
3193int av_get_exact_bits_per_sample(enum AVCodecID codec_id)
3194{
3195 switch (codec_id) {
3196 case AV_CODEC_ID_8SVX_EXP:
3197 case AV_CODEC_ID_8SVX_FIB:
3198 case AV_CODEC_ID_ADPCM_CT:
3199 case AV_CODEC_ID_ADPCM_IMA_APC:
3200 case AV_CODEC_ID_ADPCM_IMA_EA_SEAD:
3201 case AV_CODEC_ID_ADPCM_IMA_OKI:
3202 case AV_CODEC_ID_ADPCM_IMA_WS:
3203 case AV_CODEC_ID_ADPCM_G722:
3204 case AV_CODEC_ID_ADPCM_YAMAHA:
3205 return 4;
3206 case AV_CODEC_ID_DSD_LSBF:
3207 case AV_CODEC_ID_DSD_MSBF:
3208 case AV_CODEC_ID_DSD_LSBF_PLANAR:
3209 case AV_CODEC_ID_DSD_MSBF_PLANAR:
3210 case AV_CODEC_ID_PCM_ALAW:
3211 case AV_CODEC_ID_PCM_MULAW:
3212 case AV_CODEC_ID_PCM_S8:
3213 case AV_CODEC_ID_PCM_S8_PLANAR:
3214 case AV_CODEC_ID_PCM_U8:
3215 case AV_CODEC_ID_PCM_ZORK:
3216 return 8;
3217 case AV_CODEC_ID_PCM_S16BE:
3218 case AV_CODEC_ID_PCM_S16BE_PLANAR:
3219 case AV_CODEC_ID_PCM_S16LE:
3220 case AV_CODEC_ID_PCM_S16LE_PLANAR:
3221 case AV_CODEC_ID_PCM_U16BE:
3222 case AV_CODEC_ID_PCM_U16LE:
3223 return 16;
3224 case AV_CODEC_ID_PCM_S24DAUD:
3225 case AV_CODEC_ID_PCM_S24BE:
3226 case AV_CODEC_ID_PCM_S24LE:
3227 case AV_CODEC_ID_PCM_S24LE_PLANAR:
3228 case AV_CODEC_ID_PCM_U24BE:
3229 case AV_CODEC_ID_PCM_U24LE:
3230 return 24;
3231 case AV_CODEC_ID_PCM_S32BE:
3232 case AV_CODEC_ID_PCM_S32LE:
3233 case AV_CODEC_ID_PCM_S32LE_PLANAR:
3234 case AV_CODEC_ID_PCM_U32BE:
3235 case AV_CODEC_ID_PCM_U32LE:
3236 case AV_CODEC_ID_PCM_F32BE:
3237 case AV_CODEC_ID_PCM_F32LE:
3238 return 32;
3239 case AV_CODEC_ID_PCM_F64BE:
3240 case AV_CODEC_ID_PCM_F64LE:
3241 return 64;
3242 default:
3243 return 0;
3244 }
3245}
3246
3247enum AVCodecID av_get_pcm_codec(enum AVSampleFormat fmt, int be)
3248{
3249 static const enum AVCodecID map[AV_SAMPLE_FMT_NB][2] = {
3250 [AV_SAMPLE_FMT_U8 ] = { AV_CODEC_ID_PCM_U8, AV_CODEC_ID_PCM_U8 },
3251 [AV_SAMPLE_FMT_S16 ] = { AV_CODEC_ID_PCM_S16LE, AV_CODEC_ID_PCM_S16BE },
3252 [AV_SAMPLE_FMT_S32 ] = { AV_CODEC_ID_PCM_S32LE, AV_CODEC_ID_PCM_S32BE },
3253 [AV_SAMPLE_FMT_FLT ] = { AV_CODEC_ID_PCM_F32LE, AV_CODEC_ID_PCM_F32BE },
3254 [AV_SAMPLE_FMT_DBL ] = { AV_CODEC_ID_PCM_F64LE, AV_CODEC_ID_PCM_F64BE },
3255 [AV_SAMPLE_FMT_U8P ] = { AV_CODEC_ID_PCM_U8, AV_CODEC_ID_PCM_U8 },
3256 [AV_SAMPLE_FMT_S16P] = { AV_CODEC_ID_PCM_S16LE, AV_CODEC_ID_PCM_S16BE },
3257 [AV_SAMPLE_FMT_S32P] = { AV_CODEC_ID_PCM_S32LE, AV_CODEC_ID_PCM_S32BE },
3258 [AV_SAMPLE_FMT_FLTP] = { AV_CODEC_ID_PCM_F32LE, AV_CODEC_ID_PCM_F32BE },
3259 [AV_SAMPLE_FMT_DBLP] = { AV_CODEC_ID_PCM_F64LE, AV_CODEC_ID_PCM_F64BE },
3260 };
3261 if (fmt < 0 || fmt >= AV_SAMPLE_FMT_NB)
3262 return AV_CODEC_ID_NONE;
3263 if (be < 0 || be > 1)
3264 be = AV_NE(1, 0);
3265 return map[fmt][be];
3266}
3267
3268int av_get_bits_per_sample(enum AVCodecID codec_id)
3269{
3270 switch (codec_id) {
3271 case AV_CODEC_ID_ADPCM_SBPRO_2:
3272 return 2;
3273 case AV_CODEC_ID_ADPCM_SBPRO_3:
3274 return 3;
3275 case AV_CODEC_ID_ADPCM_SBPRO_4:
3276 case AV_CODEC_ID_ADPCM_IMA_WAV:
3277 case AV_CODEC_ID_ADPCM_IMA_QT:
3278 case AV_CODEC_ID_ADPCM_SWF:
3279 case AV_CODEC_ID_ADPCM_MS:
3280 return 4;
3281 default:
3282 return av_get_exact_bits_per_sample(codec_id);
3283 }
3284}
3285
3286int av_get_audio_frame_duration(AVCodecContext *avctx, int frame_bytes)
3287{
3288 int id, sr, ch, ba, tag, bps;
3289
3290 id = avctx->codec_id;
3291 sr = avctx->sample_rate;
3292 ch = avctx->channels;
3293 ba = avctx->block_align;
3294 tag = avctx->codec_tag;
3295 bps = av_get_exact_bits_per_sample(avctx->codec_id);
3296
3297 /* codecs with an exact constant bits per sample */
3298 if (bps > 0 && ch > 0 && frame_bytes > 0 && ch < 32768 && bps < 32768)
3299 return (frame_bytes * 8LL) / (bps * ch);
3300 bps = avctx->bits_per_coded_sample;
3301
3302 /* codecs with a fixed packet duration */
3303 switch (id) {
3304 case AV_CODEC_ID_ADPCM_ADX: return 32;
3305 case AV_CODEC_ID_ADPCM_IMA_QT: return 64;
3306 case AV_CODEC_ID_ADPCM_EA_XAS: return 128;
3307 case AV_CODEC_ID_AMR_NB:
3308 case AV_CODEC_ID_EVRC:
3309 case AV_CODEC_ID_GSM:
3310 case AV_CODEC_ID_QCELP:
3311 case AV_CODEC_ID_RA_288: return 160;
3312 case AV_CODEC_ID_AMR_WB:
3313 case AV_CODEC_ID_GSM_MS: return 320;
3314 case AV_CODEC_ID_MP1: return 384;
3315 case AV_CODEC_ID_ATRAC1: return 512;
3316 case AV_CODEC_ID_ATRAC3: return 1024;
f6fa7814 3317 case AV_CODEC_ID_ATRAC3P: return 2048;
2ba45a60
DM		 3318 case AV_CODEC_ID_MP2:
3319 case AV_CODEC_ID_MUSEPACK7: return 1152;
3320 case AV_CODEC_ID_AC3: return 1536;
3321 }
3322
3323 if (sr > 0) {
3324 /* calc from sample rate */
3325 if (id == AV_CODEC_ID_TTA)
3326 return 256 * sr / 245;
3327
3328 if (ch > 0) {
3329 /* calc from sample rate and channels */
3330 if (id == AV_CODEC_ID_BINKAUDIO_DCT)
3331 return (480 << (sr / 22050)) / ch;
3332 }
3333 }
3334
3335 if (ba > 0) {
3336 /* calc from block_align */
3337 if (id == AV_CODEC_ID_SIPR) {
3338 switch (ba) {
3339 case 20: return 160;
3340 case 19: return 144;
3341 case 29: return 288;
3342 case 37: return 480;
3343 }
3344 } else if (id == AV_CODEC_ID_ILBC) {
3345 switch (ba) {
3346 case 38: return 160;
3347 case 50: return 240;
3348 }
3349 }
3350 }
3351
3352 if (frame_bytes > 0) {
3353 /* calc from frame_bytes only */
3354 if (id == AV_CODEC_ID_TRUESPEECH)
3355 return 240 * (frame_bytes / 32);
3356 if (id == AV_CODEC_ID_NELLYMOSER)
3357 return 256 * (frame_bytes / 64);
3358 if (id == AV_CODEC_ID_RA_144)
3359 return 160 * (frame_bytes / 20);
3360 if (id == AV_CODEC_ID_G723_1)
3361 return 240 * (frame_bytes / 24);
3362
3363 if (bps > 0) {
3364 /* calc from frame_bytes and bits_per_coded_sample */
3365 if (id == AV_CODEC_ID_ADPCM_G726)
3366 return frame_bytes * 8 / bps;
3367 }
3368
3369 if (ch > 0) {
3370 /* calc from frame_bytes and channels */
3371 switch (id) {
3372 case AV_CODEC_ID_ADPCM_AFC:
3373 return frame_bytes / (9 * ch) * 16;
3374 case AV_CODEC_ID_ADPCM_DTK:
3375 return frame_bytes / (16 * ch) * 28;
3376 case AV_CODEC_ID_ADPCM_4XM:
3377 case AV_CODEC_ID_ADPCM_IMA_ISS:
3378 return (frame_bytes - 4 * ch) * 2 / ch;
3379 case AV_CODEC_ID_ADPCM_IMA_SMJPEG:
3380 return (frame_bytes - 4) * 2 / ch;
3381 case AV_CODEC_ID_ADPCM_IMA_AMV:
3382 return (frame_bytes - 8) * 2 / ch;
3383 case AV_CODEC_ID_ADPCM_XA:
3384 return (frame_bytes / 128) * 224 / ch;
3385 case AV_CODEC_ID_INTERPLAY_DPCM:
3386 return (frame_bytes - 6 - ch) / ch;
3387 case AV_CODEC_ID_ROQ_DPCM:
3388 return (frame_bytes - 8) / ch;
3389 case AV_CODEC_ID_XAN_DPCM:
3390 return (frame_bytes - 2 * ch) / ch;
3391 case AV_CODEC_ID_MACE3:
3392 return 3 * frame_bytes / ch;
3393 case AV_CODEC_ID_MACE6:
3394 return 6 * frame_bytes / ch;
3395 case AV_CODEC_ID_PCM_LXF:
3396 return 2 * (frame_bytes / (5 * ch));
3397 case AV_CODEC_ID_IAC:
3398 case AV_CODEC_ID_IMC:
3399 return 4 * frame_bytes / ch;
3400 }
3401
3402 if (tag) {
3403 /* calc from frame_bytes, channels, and codec_tag */
3404 if (id == AV_CODEC_ID_SOL_DPCM) {
3405 if (tag == 3)
3406 return frame_bytes / ch;
3407 else
3408 return frame_bytes * 2 / ch;
3409 }
3410 }
3411
3412 if (ba > 0) {
3413 /* calc from frame_bytes, channels, and block_align */
3414 int blocks = frame_bytes / ba;
3415 switch (avctx->codec_id) {
3416 case AV_CODEC_ID_ADPCM_IMA_WAV:
3417 if (bps < 2 || bps > 5)
3418 return 0;
3419 return blocks * (1 + (ba - 4 * ch) / (bps * ch) * 8);
3420 case AV_CODEC_ID_ADPCM_IMA_DK3:
3421 return blocks * (((ba - 16) * 2 / 3 * 4) / ch);
3422 case AV_CODEC_ID_ADPCM_IMA_DK4:
3423 return blocks * (1 + (ba - 4 * ch) * 2 / ch);
3424 case AV_CODEC_ID_ADPCM_IMA_RAD:
3425 return blocks * ((ba - 4 * ch) * 2 / ch);
3426 case AV_CODEC_ID_ADPCM_MS:
3427 return blocks * (2 + (ba - 7 * ch) * 2 / ch);
3428 }
3429 }
3430
3431 if (bps > 0) {
3432 /* calc from frame_bytes, channels, and bits_per_coded_sample */
3433 switch (avctx->codec_id) {
3434 case AV_CODEC_ID_PCM_DVD:
3435 if(bps<4)
3436 return 0;
3437 return 2 * (frame_bytes / ((bps * 2 / 8) * ch));
3438 case AV_CODEC_ID_PCM_BLURAY:
3439 if(bps<4)
3440 return 0;
3441 return frame_bytes / ((FFALIGN(ch, 2) * bps) / 8);
3442 case AV_CODEC_ID_S302M:
3443 return 2 * (frame_bytes / ((bps + 4) / 4)) / ch;
3444 }
3445 }
3446 }
3447 }
3448
3449 /* Fall back on using frame_size */
3450 if (avctx->frame_size > 1 && frame_bytes)
3451 return avctx->frame_size;
3452
3453 //For WMA we currently have no other means to calculate duration thus we
3454 //do it here by assuming CBR, which is true for all known cases.
3455 if (avctx->bit_rate>0 && frame_bytes>0 && avctx->sample_rate>0 && avctx->block_align>1) {
3456 if (avctx->codec_id == AV_CODEC_ID_WMAV1 || avctx->codec_id == AV_CODEC_ID_WMAV2)
3457 return (frame_bytes * 8LL * avctx->sample_rate) / avctx->bit_rate;
3458 }
3459
3460 return 0;
3461}
3462
3463#if !HAVE_THREADS
3464int ff_thread_init(AVCodecContext *s)
3465{
3466 return -1;
3467}
3468
3469#endif
3470
3471unsigned int av_xiphlacing(unsigned char *s, unsigned int v)
3472{
3473 unsigned int n = 0;
3474
3475 while (v >= 0xff) {
3476 *s++ = 0xff;
3477 v -= 0xff;
3478 n++;
3479 }
3480 *s = v;
3481 n++;
3482 return n;
3483}
3484
3485int ff_match_2uint16(const uint16_t(*tab)[2], int size, int a, int b)
3486{
3487 int i;
3488 for (i = 0; i < size && !(tab[i][0] == a && tab[i][1] == b); i++) ;
3489 return i;
3490}
3491
3492#if FF_API_MISSING_SAMPLE
3493FF_DISABLE_DEPRECATION_WARNINGS
3494void av_log_missing_feature(void *avc, const char *feature, int want_sample)
3495{
3496 av_log(avc, AV_LOG_WARNING, "%s is not implemented. Update your FFmpeg "
3497 "version to the newest one from Git. If the problem still "
3498 "occurs, it means that your file has a feature which has not "
3499 "been implemented.\n", feature);
3500 if(want_sample)
3501 av_log_ask_for_sample(avc, NULL);
3502}
3503
3504void av_log_ask_for_sample(void *avc, const char *msg, ...)
3505{
3506 va_list argument_list;
3507
3508 va_start(argument_list, msg);
3509
3510 if (msg)
3511 av_vlog(avc, AV_LOG_WARNING, msg, argument_list);
3512 av_log(avc, AV_LOG_WARNING, "If you want to help, upload a sample "
3513 "of this file to ftp://upload.ffmpeg.org/incoming/ "
3514 "and contact the ffmpeg-devel mailing list. (ffmpeg-devel@ffmpeg.org)\n");
3515
3516 va_end(argument_list);
3517}
3518FF_ENABLE_DEPRECATION_WARNINGS
3519#endif /* FF_API_MISSING_SAMPLE */
3520
3521static AVHWAccel *first_hwaccel = NULL;
3522static AVHWAccel **last_hwaccel = &first_hwaccel;
3523
3524void av_register_hwaccel(AVHWAccel *hwaccel)
3525{
3526 AVHWAccel **p = last_hwaccel;
3527 hwaccel->next = NULL;
3528 while(*p || avpriv_atomic_ptr_cas((void * volatile *)p, NULL, hwaccel))
3529 p = &(*p)->next;
3530 last_hwaccel = &hwaccel->next;
3531}
3532
3533AVHWAccel *av_hwaccel_next(const AVHWAccel *hwaccel)
3534{
3535 return hwaccel ? hwaccel->next : first_hwaccel;
3536}
3537
3538int av_lockmgr_register(int (*cb)(void **mutex, enum AVLockOp op))
3539{
3540 if (lockmgr_cb) {
f6fa7814
DM		 3541 // There is no good way to rollback a failure to destroy the
3542 // mutex, so we ignore failures.
3543 lockmgr_cb(&codec_mutex, AV_LOCK_DESTROY);
3544 lockmgr_cb(&avformat_mutex, AV_LOCK_DESTROY);
3545 lockmgr_cb = NULL;
3546 codec_mutex = NULL;
3547 avformat_mutex = NULL;
3548 }
3549
3550 if (cb) {
3551 void *new_codec_mutex = NULL;
3552 void *new_avformat_mutex = NULL;
3553 int err;
3554 if (err = cb(&new_codec_mutex, AV_LOCK_CREATE)) {
3555 return err > 0 ? AVERROR_UNKNOWN : err;
3556 }
3557 if (err = cb(&new_avformat_mutex, AV_LOCK_CREATE)) {
3558 // Ignore failures to destroy the newly created mutex.
3559 cb(&new_codec_mutex, AV_LOCK_DESTROY);
3560 return err > 0 ? AVERROR_UNKNOWN : err;
3561 }
3562 lockmgr_cb = cb;
3563 codec_mutex = new_codec_mutex;
3564 avformat_mutex = new_avformat_mutex;
2ba45a60
DM		 3565 }
3566
2ba45a60
DM		 3567 return 0;
3568}
3569
3570int ff_lock_avcodec(AVCodecContext *log_ctx)
3571{
3572 if (lockmgr_cb) {
3573 if ((*lockmgr_cb)(&codec_mutex, AV_LOCK_OBTAIN))
3574 return -1;
3575 }
3576 entangled_thread_counter++;
3577 if (entangled_thread_counter != 1) {
3578 av_log(log_ctx, AV_LOG_ERROR, "Insufficient thread locking around avcodec_open/close()\n");
3579 if (!lockmgr_cb)
3580 av_log(log_ctx, AV_LOG_ERROR, "No lock manager is set, please see av_lockmgr_register()\n");
3581 ff_avcodec_locked = 1;
3582 ff_unlock_avcodec();
3583 return AVERROR(EINVAL);
3584 }
3585 av_assert0(!ff_avcodec_locked);
3586 ff_avcodec_locked = 1;
3587 return 0;
3588}
3589
3590int ff_unlock_avcodec(void)
3591{
3592 av_assert0(ff_avcodec_locked);
3593 ff_avcodec_locked = 0;
3594 entangled_thread_counter--;
3595 if (lockmgr_cb) {
3596 if ((*lockmgr_cb)(&codec_mutex, AV_LOCK_RELEASE))
3597 return -1;
3598 }
f6fa7814 3599
2ba45a60
DM		 3600 return 0;
3601}
3602
3603int avpriv_lock_avformat(void)
3604{
3605 if (lockmgr_cb) {
3606 if ((*lockmgr_cb)(&avformat_mutex, AV_LOCK_OBTAIN))
3607 return -1;
3608 }
3609 return 0;
3610}
3611
3612int avpriv_unlock_avformat(void)
3613{
3614 if (lockmgr_cb) {
3615 if ((*lockmgr_cb)(&avformat_mutex, AV_LOCK_RELEASE))
3616 return -1;
3617 }
3618 return 0;
3619}
3620
3621unsigned int avpriv_toupper4(unsigned int x)
3622{
3623 return av_toupper(x & 0xFF) +
3624 (av_toupper((x >> 8) & 0xFF) << 8) +
3625 (av_toupper((x >> 16) & 0xFF) << 16) +
3626((unsigned)av_toupper((x >> 24) & 0xFF) << 24);
3627}
3628
3629int ff_thread_ref_frame(ThreadFrame *dst, ThreadFrame *src)
3630{
3631 int ret;
3632
3633 dst->owner = src->owner;
3634
3635 ret = av_frame_ref(dst->f, src->f);
3636 if (ret < 0)
3637 return ret;
3638
3639 if (src->progress &&
3640 !(dst->progress = av_buffer_ref(src->progress))) {
3641 ff_thread_release_buffer(dst->owner, dst);
3642 return AVERROR(ENOMEM);
3643 }
3644
3645 return 0;
3646}
3647
3648#if !HAVE_THREADS
3649
3650enum AVPixelFormat ff_thread_get_format(AVCodecContext *avctx, const enum AVPixelFormat *fmt)
3651{
3652 return ff_get_format(avctx, fmt);
3653}
3654
3655int ff_thread_get_buffer(AVCodecContext *avctx, ThreadFrame *f, int flags)
3656{
3657 f->owner = avctx;
3658 return ff_get_buffer(avctx, f->f, flags);
3659}
3660
3661void ff_thread_release_buffer(AVCodecContext *avctx, ThreadFrame *f)
3662{
3663 if (f->f)
3664 av_frame_unref(f->f);
3665}
3666
3667void ff_thread_finish_setup(AVCodecContext *avctx)
3668{
3669}
3670
3671void ff_thread_report_progress(ThreadFrame *f, int progress, int field)
3672{
3673}
3674
3675void ff_thread_await_progress(ThreadFrame *f, int progress, int field)
3676{
3677}
3678
3679int ff_thread_can_start_frame(AVCodecContext *avctx)
3680{
3681 return 1;
3682}
3683
3684int ff_alloc_entries(AVCodecContext *avctx, int count)
3685{
3686 return 0;
3687}
3688
3689void ff_reset_entries(AVCodecContext *avctx)
3690{
3691}
3692
3693void ff_thread_await_progress2(AVCodecContext *avctx, int field, int thread, int shift)
3694{
3695}
3696
3697void ff_thread_report_progress2(AVCodecContext *avctx, int field, int thread, int n)
3698{
3699}
3700
3701#endif
3702
3703enum AVMediaType avcodec_get_type(enum AVCodecID codec_id)
3704{
3705 AVCodec *c= avcodec_find_decoder(codec_id);
3706 if(!c)
3707 c= avcodec_find_encoder(codec_id);
3708 if(c)
3709 return c->type;
3710
3711 if (codec_id <= AV_CODEC_ID_NONE)
3712 return AVMEDIA_TYPE_UNKNOWN;
3713 else if (codec_id < AV_CODEC_ID_FIRST_AUDIO)
3714 return AVMEDIA_TYPE_VIDEO;
3715 else if (codec_id < AV_CODEC_ID_FIRST_SUBTITLE)
3716 return AVMEDIA_TYPE_AUDIO;
3717 else if (codec_id < AV_CODEC_ID_FIRST_UNKNOWN)
3718 return AVMEDIA_TYPE_SUBTITLE;
3719
3720 return AVMEDIA_TYPE_UNKNOWN;
3721}
3722
3723int avcodec_is_open(AVCodecContext *s)
3724{
3725 return !!s->internal;
3726}
3727
3728int avpriv_bprint_to_extradata(AVCodecContext *avctx, struct AVBPrint *buf)
3729{
3730 int ret;
3731 char *str;
3732
3733 ret = av_bprint_finalize(buf, &str);
3734 if (ret < 0)
3735 return ret;
f6fa7814
DM		 3736 if (!av_bprint_is_complete(buf)) {
3737 av_free(str);
3738 return AVERROR(ENOMEM);
3739 }
3740
2ba45a60
DM		 3741 avctx->extradata = str;
3742 /* Note: the string is NUL terminated (so extradata can be read as a
3743 * string), but the ending character is not accounted in the size (in
3744 * binary formats you are likely not supposed to mux that character). When
3745 * extradata is copied, it is also padded with FF_INPUT_BUFFER_PADDING_SIZE
3746 * zeros. */
3747 avctx->extradata_size = buf->len;
3748 return 0;
3749}
3750
3751const uint8_t *avpriv_find_start_code(const uint8_t *av_restrict p,
3752 const uint8_t *end,
3753 uint32_t *av_restrict state)
3754{
3755 int i;
3756
3757 av_assert0(p <= end);
3758 if (p >= end)
3759 return end;
3760
3761 for (i = 0; i < 3; i++) {
3762 uint32_t tmp = *state << 8;
3763 *state = tmp + *(p++);
3764 if (tmp == 0x100 || p == end)
3765 return p;
3766 }
3767
3768 while (p < end) {
3769 if (p[-1] > 1 ) p += 3;
3770 else if (p[-2] ) p += 2;
3771 else if (p[-3]|(p[-1]-1)) p++;
3772 else {
3773 p++;
3774 break;
3775 }
3776 }
3777
3778 p = FFMIN(p, end) - 4;
3779 *state = AV_RB32(p);
3780
3781 return p + 4;
3782}
ffmpeg Piment Noir Debian package repository