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/hwcontext.h"
38 #include "libavutil/internal.h"
39 #include "libavutil/mathematics.h"
40 #include "libavutil/mem_internal.h"
41 #include "libavutil/pixdesc.h"
42 #include "libavutil/imgutils.h"
43 #include "libavutil/samplefmt.h"
44 #include "libavutil/dict.h"
45 #include "libavutil/thread.h"
46 #include "avcodec.h"
47 #include "libavutil/opt.h"
48 #include "me_cmp.h"
49 #include "mpegvideo.h"
50 #include "thread.h"
51 #include "frame_thread_encoder.h"
52 #include "internal.h"
53 #include "raw.h"
54 #include "bytestream.h"
55 #include "version.h"
56 #include <stdlib.h>
57 #include <stdarg.h>
58 #include <limits.h>
59 #include <float.h>
60 #if CONFIG_ICONV
61 # include <iconv.h>
62 #endif
63
64 #include "libavutil/ffversion.h"
65 const char av_codec_ffversion[] = "FFmpeg version " FFMPEG_VERSION;
66
67 #if HAVE_PTHREADS || HAVE_W32THREADS || HAVE_OS2THREADS
default_lockmgr_cb(void ** arg,enum AVLockOp op)68 static int default_lockmgr_cb(void **arg, enum AVLockOp op)
69 {
70 void * volatile * mutex = arg;
71 int err;
72
73 switch (op) {
74 case AV_LOCK_CREATE:
75 return 0;
76 case AV_LOCK_OBTAIN:
77 if (!*mutex) {
78 pthread_mutex_t *tmp = av_malloc(sizeof(pthread_mutex_t));
79 if (!tmp)
80 return AVERROR(ENOMEM);
81 if ((err = pthread_mutex_init(tmp, NULL))) {
82 av_free(tmp);
83 return AVERROR(err);
84 }
85 if (avpriv_atomic_ptr_cas(mutex, NULL, tmp)) {
86 pthread_mutex_destroy(tmp);
87 av_free(tmp);
88 }
89 }
90
91 if ((err = pthread_mutex_lock(*mutex)))
92 return AVERROR(err);
93
94 return 0;
95 case AV_LOCK_RELEASE:
96 if ((err = pthread_mutex_unlock(*mutex)))
97 return AVERROR(err);
98
99 return 0;
100 case AV_LOCK_DESTROY:
101 if (*mutex)
102 pthread_mutex_destroy(*mutex);
103 av_free(*mutex);
104 avpriv_atomic_ptr_cas(mutex, *mutex, NULL);
105 return 0;
106 }
107 return 1;
108 }
109 static int (*lockmgr_cb)(void **mutex, enum AVLockOp op) = default_lockmgr_cb;
110 #else
111 static int (*lockmgr_cb)(void **mutex, enum AVLockOp op) = NULL;
112 #endif
113
114
115 volatile int ff_avcodec_locked;
116 static int volatile entangled_thread_counter = 0;
117 static void *codec_mutex;
118 static void *avformat_mutex;
119
av_fast_padded_malloc(void * ptr,unsigned int * size,size_t min_size)120 void av_fast_padded_malloc(void *ptr, unsigned int *size, size_t min_size)
121 {
122 uint8_t **p = ptr;
123 if (min_size > SIZE_MAX - AV_INPUT_BUFFER_PADDING_SIZE) {
124 av_freep(p);
125 *size = 0;
126 return;
127 }
128 if (!ff_fast_malloc(p, size, min_size + AV_INPUT_BUFFER_PADDING_SIZE, 1))
129 memset(*p + min_size, 0, AV_INPUT_BUFFER_PADDING_SIZE);
130 }
131
av_fast_padded_mallocz(void * ptr,unsigned int * size,size_t min_size)132 void av_fast_padded_mallocz(void *ptr, unsigned int *size, size_t min_size)
133 {
134 uint8_t **p = ptr;
135 if (min_size > SIZE_MAX - AV_INPUT_BUFFER_PADDING_SIZE) {
136 av_freep(p);
137 *size = 0;
138 return;
139 }
140 if (!ff_fast_malloc(p, size, min_size + AV_INPUT_BUFFER_PADDING_SIZE, 1))
141 memset(*p, 0, min_size + AV_INPUT_BUFFER_PADDING_SIZE);
142 }
143
144 /* encoder management */
145 static AVCodec *first_avcodec = NULL;
146 static AVCodec **last_avcodec = &first_avcodec;
147
av_codec_next(const AVCodec * c)148 AVCodec *av_codec_next(const AVCodec *c)
149 {
150 if (c)
151 return c->next;
152 else
153 return first_avcodec;
154 }
155
avcodec_init(void)156 static av_cold void avcodec_init(void)
157 {
158 static int initialized = 0;
159
160 if (initialized != 0)
161 return;
162 initialized = 1;
163
164 if (CONFIG_ME_CMP)
165 ff_me_cmp_init_static();
166 }
167
av_codec_is_encoder(const AVCodec * codec)168 int av_codec_is_encoder(const AVCodec *codec)
169 {
170 return codec && (codec->encode_sub || codec->encode2 ||codec->send_frame);
171 }
172
av_codec_is_decoder(const AVCodec * codec)173 int av_codec_is_decoder(const AVCodec *codec)
174 {
175 return codec && (codec->decode || codec->send_packet);
176 }
177
avcodec_register(AVCodec * codec)178 av_cold void avcodec_register(AVCodec *codec)
179 {
180 AVCodec **p;
181 avcodec_init();
182 p = last_avcodec;
183 codec->next = NULL;
184
185 while(*p || avpriv_atomic_ptr_cas((void * volatile *)p, NULL, codec))
186 p = &(*p)->next;
187 last_avcodec = &codec->next;
188
189 if (codec->init_static_data)
190 codec->init_static_data(codec);
191 }
192
193 #if FF_API_EMU_EDGE
avcodec_get_edge_width(void)194 unsigned avcodec_get_edge_width(void)
195 {
196 return EDGE_WIDTH;
197 }
198 #endif
199
200 #if FF_API_SET_DIMENSIONS
avcodec_set_dimensions(AVCodecContext * s,int width,int height)201 void avcodec_set_dimensions(AVCodecContext *s, int width, int height)
202 {
203 int ret = ff_set_dimensions(s, width, height);
204 if (ret < 0) {
205 av_log(s, AV_LOG_WARNING, "Failed to set dimensions %d %d\n", width, height);
206 }
207 }
208 #endif
209
ff_set_dimensions(AVCodecContext * s,int width,int height)210 int ff_set_dimensions(AVCodecContext *s, int width, int height)
211 {
212 int ret = av_image_check_size(width, height, 0, s);
213
214 if (ret < 0)
215 width = height = 0;
216
217 s->coded_width = width;
218 s->coded_height = height;
219 s->width = AV_CEIL_RSHIFT(width, s->lowres);
220 s->height = AV_CEIL_RSHIFT(height, s->lowres);
221
222 return ret;
223 }
224
ff_set_sar(AVCodecContext * avctx,AVRational sar)225 int ff_set_sar(AVCodecContext *avctx, AVRational sar)
226 {
227 int ret = av_image_check_sar(avctx->width, avctx->height, sar);
228
229 if (ret < 0) {
230 av_log(avctx, AV_LOG_WARNING, "ignoring invalid SAR: %d/%d\n",
231 sar.num, sar.den);
232 avctx->sample_aspect_ratio = (AVRational){ 0, 1 };
233 return ret;
234 } else {
235 avctx->sample_aspect_ratio = sar;
236 }
237 return 0;
238 }
239
ff_side_data_update_matrix_encoding(AVFrame * frame,enum AVMatrixEncoding matrix_encoding)240 int ff_side_data_update_matrix_encoding(AVFrame *frame,
241 enum AVMatrixEncoding matrix_encoding)
242 {
243 AVFrameSideData *side_data;
244 enum AVMatrixEncoding *data;
245
246 side_data = av_frame_get_side_data(frame, AV_FRAME_DATA_MATRIXENCODING);
247 if (!side_data)
248 side_data = av_frame_new_side_data(frame, AV_FRAME_DATA_MATRIXENCODING,
249 sizeof(enum AVMatrixEncoding));
250
251 if (!side_data)
252 return AVERROR(ENOMEM);
253
254 data = (enum AVMatrixEncoding*)side_data->data;
255 *data = matrix_encoding;
256
257 return 0;
258 }
259
avcodec_align_dimensions2(AVCodecContext * s,int * width,int * height,int linesize_align[AV_NUM_DATA_POINTERS])260 void avcodec_align_dimensions2(AVCodecContext *s, int *width, int *height,
261 int linesize_align[AV_NUM_DATA_POINTERS])
262 {
263 int i;
264 int w_align = 1;
265 int h_align = 1;
266 AVPixFmtDescriptor const *desc = av_pix_fmt_desc_get(s->pix_fmt);
267
268 if (desc) {
269 w_align = 1 << desc->log2_chroma_w;
270 h_align = 1 << desc->log2_chroma_h;
271 }
272
273 switch (s->pix_fmt) {
274 case AV_PIX_FMT_YUV420P:
275 case AV_PIX_FMT_YUYV422:
276 case AV_PIX_FMT_YVYU422:
277 case AV_PIX_FMT_UYVY422:
278 case AV_PIX_FMT_YUV422P:
279 case AV_PIX_FMT_YUV440P:
280 case AV_PIX_FMT_YUV444P:
281 case AV_PIX_FMT_GBRP:
282 case AV_PIX_FMT_GBRAP:
283 case AV_PIX_FMT_GRAY8:
284 case AV_PIX_FMT_GRAY16BE:
285 case AV_PIX_FMT_GRAY16LE:
286 case AV_PIX_FMT_YUVJ420P:
287 case AV_PIX_FMT_YUVJ422P:
288 case AV_PIX_FMT_YUVJ440P:
289 case AV_PIX_FMT_YUVJ444P:
290 case AV_PIX_FMT_YUVA420P:
291 case AV_PIX_FMT_YUVA422P:
292 case AV_PIX_FMT_YUVA444P:
293 case AV_PIX_FMT_YUV420P9LE:
294 case AV_PIX_FMT_YUV420P9BE:
295 case AV_PIX_FMT_YUV420P10LE:
296 case AV_PIX_FMT_YUV420P10BE:
297 case AV_PIX_FMT_YUV420P12LE:
298 case AV_PIX_FMT_YUV420P12BE:
299 case AV_PIX_FMT_YUV420P14LE:
300 case AV_PIX_FMT_YUV420P14BE:
301 case AV_PIX_FMT_YUV420P16LE:
302 case AV_PIX_FMT_YUV420P16BE:
303 case AV_PIX_FMT_YUVA420P9LE:
304 case AV_PIX_FMT_YUVA420P9BE:
305 case AV_PIX_FMT_YUVA420P10LE:
306 case AV_PIX_FMT_YUVA420P10BE:
307 case AV_PIX_FMT_YUVA420P16LE:
308 case AV_PIX_FMT_YUVA420P16BE:
309 case AV_PIX_FMT_YUV422P9LE:
310 case AV_PIX_FMT_YUV422P9BE:
311 case AV_PIX_FMT_YUV422P10LE:
312 case AV_PIX_FMT_YUV422P10BE:
313 case AV_PIX_FMT_YUV422P12LE:
314 case AV_PIX_FMT_YUV422P12BE:
315 case AV_PIX_FMT_YUV422P14LE:
316 case AV_PIX_FMT_YUV422P14BE:
317 case AV_PIX_FMT_YUV422P16LE:
318 case AV_PIX_FMT_YUV422P16BE:
319 case AV_PIX_FMT_YUVA422P9LE:
320 case AV_PIX_FMT_YUVA422P9BE:
321 case AV_PIX_FMT_YUVA422P10LE:
322 case AV_PIX_FMT_YUVA422P10BE:
323 case AV_PIX_FMT_YUVA422P16LE:
324 case AV_PIX_FMT_YUVA422P16BE:
325 case AV_PIX_FMT_YUV440P10LE:
326 case AV_PIX_FMT_YUV440P10BE:
327 case AV_PIX_FMT_YUV440P12LE:
328 case AV_PIX_FMT_YUV440P12BE:
329 case AV_PIX_FMT_YUV444P9LE:
330 case AV_PIX_FMT_YUV444P9BE:
331 case AV_PIX_FMT_YUV444P10LE:
332 case AV_PIX_FMT_YUV444P10BE:
333 case AV_PIX_FMT_YUV444P12LE:
334 case AV_PIX_FMT_YUV444P12BE:
335 case AV_PIX_FMT_YUV444P14LE:
336 case AV_PIX_FMT_YUV444P14BE:
337 case AV_PIX_FMT_YUV444P16LE:
338 case AV_PIX_FMT_YUV444P16BE:
339 case AV_PIX_FMT_YUVA444P9LE:
340 case AV_PIX_FMT_YUVA444P9BE:
341 case AV_PIX_FMT_YUVA444P10LE:
342 case AV_PIX_FMT_YUVA444P10BE:
343 case AV_PIX_FMT_YUVA444P16LE:
344 case AV_PIX_FMT_YUVA444P16BE:
345 case AV_PIX_FMT_GBRP9LE:
346 case AV_PIX_FMT_GBRP9BE:
347 case AV_PIX_FMT_GBRP10LE:
348 case AV_PIX_FMT_GBRP10BE:
349 case AV_PIX_FMT_GBRP12LE:
350 case AV_PIX_FMT_GBRP12BE:
351 case AV_PIX_FMT_GBRP14LE:
352 case AV_PIX_FMT_GBRP14BE:
353 case AV_PIX_FMT_GBRP16LE:
354 case AV_PIX_FMT_GBRP16BE:
355 case AV_PIX_FMT_GBRAP12LE:
356 case AV_PIX_FMT_GBRAP12BE:
357 case AV_PIX_FMT_GBRAP16LE:
358 case AV_PIX_FMT_GBRAP16BE:
359 w_align = 16; //FIXME assume 16 pixel per macroblock
360 h_align = 16 * 2; // interlaced needs 2 macroblocks height
361 break;
362 case AV_PIX_FMT_YUV411P:
363 case AV_PIX_FMT_YUVJ411P:
364 case AV_PIX_FMT_UYYVYY411:
365 w_align = 32;
366 h_align = 16 * 2;
367 break;
368 case AV_PIX_FMT_YUV410P:
369 if (s->codec_id == AV_CODEC_ID_SVQ1) {
370 w_align = 64;
371 h_align = 64;
372 }
373 break;
374 case AV_PIX_FMT_RGB555:
375 if (s->codec_id == AV_CODEC_ID_RPZA) {
376 w_align = 4;
377 h_align = 4;
378 }
379 break;
380 case AV_PIX_FMT_PAL8:
381 case AV_PIX_FMT_BGR8:
382 case AV_PIX_FMT_RGB8:
383 if (s->codec_id == AV_CODEC_ID_SMC ||
384 s->codec_id == AV_CODEC_ID_CINEPAK) {
385 w_align = 4;
386 h_align = 4;
387 }
388 if (s->codec_id == AV_CODEC_ID_JV) {
389 w_align = 8;
390 h_align = 8;
391 }
392 break;
393 case AV_PIX_FMT_BGR24:
394 if ((s->codec_id == AV_CODEC_ID_MSZH) ||
395 (s->codec_id == AV_CODEC_ID_ZLIB)) {
396 w_align = 4;
397 h_align = 4;
398 }
399 break;
400 case AV_PIX_FMT_RGB24:
401 if (s->codec_id == AV_CODEC_ID_CINEPAK) {
402 w_align = 4;
403 h_align = 4;
404 }
405 break;
406 default:
407 break;
408 }
409
410 if (s->codec_id == AV_CODEC_ID_IFF_ILBM) {
411 w_align = FFMAX(w_align, 8);
412 }
413
414 *width = FFALIGN(*width, w_align);
415 *height = FFALIGN(*height, h_align);
416 if (s->codec_id == AV_CODEC_ID_H264 || s->lowres) {
417 // some of the optimized chroma MC reads one line too much
418 // which is also done in mpeg decoders with lowres > 0
419 *height += 2;
420
421 // H.264 uses edge emulation for out of frame motion vectors, for this
422 // it requires a temporary area large enough to hold a 21x21 block,
423 // increasing witdth ensure that the temporary area is large enough,
424 // the next rounded up width is 32
425 *width = FFMAX(*width, 32);
426 }
427
428 for (i = 0; i < 4; i++)
429 linesize_align[i] = STRIDE_ALIGN;
430 }
431
avcodec_align_dimensions(AVCodecContext * s,int * width,int * height)432 void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height)
433 {
434 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(s->pix_fmt);
435 int chroma_shift = desc->log2_chroma_w;
436 int linesize_align[AV_NUM_DATA_POINTERS];
437 int align;
438
439 avcodec_align_dimensions2(s, width, height, linesize_align);
440 align = FFMAX(linesize_align[0], linesize_align[3]);
441 linesize_align[1] <<= chroma_shift;
442 linesize_align[2] <<= chroma_shift;
443 align = FFMAX3(align, linesize_align[1], linesize_align[2]);
444 *width = FFALIGN(*width, align);
445 }
446
avcodec_enum_to_chroma_pos(int * xpos,int * ypos,enum AVChromaLocation pos)447 int avcodec_enum_to_chroma_pos(int *xpos, int *ypos, enum AVChromaLocation pos)
448 {
449 if (pos <= AVCHROMA_LOC_UNSPECIFIED || pos >= AVCHROMA_LOC_NB)
450 return AVERROR(EINVAL);
451 pos--;
452
453 *xpos = (pos&1) * 128;
454 *ypos = ((pos>>1)^(pos<4)) * 128;
455
456 return 0;
457 }
458
avcodec_chroma_pos_to_enum(int xpos,int ypos)459 enum AVChromaLocation avcodec_chroma_pos_to_enum(int xpos, int ypos)
460 {
461 int pos, xout, yout;
462
463 for (pos = AVCHROMA_LOC_UNSPECIFIED + 1; pos < AVCHROMA_LOC_NB; pos++) {
464 if (avcodec_enum_to_chroma_pos(&xout, &yout, pos) == 0 && xout == xpos && yout == ypos)
465 return pos;
466 }
467 return AVCHROMA_LOC_UNSPECIFIED;
468 }
469
avcodec_fill_audio_frame(AVFrame * frame,int nb_channels,enum AVSampleFormat sample_fmt,const uint8_t * buf,int buf_size,int align)470 int avcodec_fill_audio_frame(AVFrame *frame, int nb_channels,
471 enum AVSampleFormat sample_fmt, const uint8_t *buf,
472 int buf_size, int align)
473 {
474 int ch, planar, needed_size, ret = 0;
475
476 needed_size = av_samples_get_buffer_size(NULL, nb_channels,
477 frame->nb_samples, sample_fmt,
478 align);
479 if (buf_size < needed_size)
480 return AVERROR(EINVAL);
481
482 planar = av_sample_fmt_is_planar(sample_fmt);
483 if (planar && nb_channels > AV_NUM_DATA_POINTERS) {
484 if (!(frame->extended_data = av_mallocz_array(nb_channels,
485 sizeof(*frame->extended_data))))
486 return AVERROR(ENOMEM);
487 } else {
488 frame->extended_data = frame->data;
489 }
490
491 if ((ret = av_samples_fill_arrays(frame->extended_data, &frame->linesize[0],
492 (uint8_t *)(intptr_t)buf, nb_channels, frame->nb_samples,
493 sample_fmt, align)) < 0) {
494 if (frame->extended_data != frame->data)
495 av_freep(&frame->extended_data);
496 return ret;
497 }
498 if (frame->extended_data != frame->data) {
499 for (ch = 0; ch < AV_NUM_DATA_POINTERS; ch++)
500 frame->data[ch] = frame->extended_data[ch];
501 }
502
503 return ret;
504 }
505
update_frame_pool(AVCodecContext * avctx,AVFrame * frame)506 static int update_frame_pool(AVCodecContext *avctx, AVFrame *frame)
507 {
508 FramePool *pool = avctx->internal->pool;
509 int i, ret;
510
511 switch (avctx->codec_type) {
512 case AVMEDIA_TYPE_VIDEO: {
513 uint8_t *data[4];
514 int linesize[4];
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 ret = av_image_fill_linesizes(linesize, avctx->pix_fmt, w);
530 if (ret < 0)
531 return ret;
532 // increase alignment of w for next try (rhs gives the lowest bit set in w)
533 w += w & ~(w - 1);
534
535 unaligned = 0;
536 for (i = 0; i < 4; i++)
537 unaligned |= linesize[i] % pool->stride_align[i];
538 } while (unaligned);
539
540 tmpsize = av_image_fill_pointers(data, avctx->pix_fmt, h,
541 NULL, linesize);
542 if (tmpsize < 0)
543 return -1;
544
545 for (i = 0; i < 3 && data[i + 1]; i++)
546 size[i] = data[i + 1] - data[i];
547 size[i] = tmpsize - (data[i] - data[0]);
548
549 for (i = 0; i < 4; i++) {
550 av_buffer_pool_uninit(&pool->pools[i]);
551 pool->linesize[i] = linesize[i];
552 if (size[i]) {
553 pool->pools[i] = av_buffer_pool_init(size[i] + 16 + STRIDE_ALIGN - 1,
554 CONFIG_MEMORY_POISONING ?
555 NULL :
556 av_buffer_allocz);
557 if (!pool->pools[i]) {
558 ret = AVERROR(ENOMEM);
559 goto fail;
560 }
561 }
562 }
563 pool->format = frame->format;
564 pool->width = frame->width;
565 pool->height = frame->height;
566
567 break;
568 }
569 case AVMEDIA_TYPE_AUDIO: {
570 int ch = av_frame_get_channels(frame); //av_get_channel_layout_nb_channels(frame->channel_layout);
571 int planar = av_sample_fmt_is_planar(frame->format);
572 int planes = planar ? ch : 1;
573
574 if (pool->format == frame->format && pool->planes == planes &&
575 pool->channels == ch && frame->nb_samples == pool->samples)
576 return 0;
577
578 av_buffer_pool_uninit(&pool->pools[0]);
579 ret = av_samples_get_buffer_size(&pool->linesize[0], ch,
580 frame->nb_samples, frame->format, 0);
581 if (ret < 0)
582 goto fail;
583
584 pool->pools[0] = av_buffer_pool_init(pool->linesize[0], NULL);
585 if (!pool->pools[0]) {
586 ret = AVERROR(ENOMEM);
587 goto fail;
588 }
589
590 pool->format = frame->format;
591 pool->planes = planes;
592 pool->channels = ch;
593 pool->samples = frame->nb_samples;
594 break;
595 }
596 default: av_assert0(0);
597 }
598 return 0;
599 fail:
600 for (i = 0; i < 4; i++)
601 av_buffer_pool_uninit(&pool->pools[i]);
602 pool->format = -1;
603 pool->planes = pool->channels = pool->samples = 0;
604 pool->width = pool->height = 0;
605 return ret;
606 }
607
audio_get_buffer(AVCodecContext * avctx,AVFrame * frame)608 static int audio_get_buffer(AVCodecContext *avctx, AVFrame *frame)
609 {
610 FramePool *pool = avctx->internal->pool;
611 int planes = pool->planes;
612 int i;
613
614 frame->linesize[0] = pool->linesize[0];
615
616 if (planes > AV_NUM_DATA_POINTERS) {
617 frame->extended_data = av_mallocz_array(planes, sizeof(*frame->extended_data));
618 frame->nb_extended_buf = planes - AV_NUM_DATA_POINTERS;
619 frame->extended_buf = av_mallocz_array(frame->nb_extended_buf,
620 sizeof(*frame->extended_buf));
621 if (!frame->extended_data || !frame->extended_buf) {
622 av_freep(&frame->extended_data);
623 av_freep(&frame->extended_buf);
624 return AVERROR(ENOMEM);
625 }
626 } else {
627 frame->extended_data = frame->data;
628 av_assert0(frame->nb_extended_buf == 0);
629 }
630
631 for (i = 0; i < FFMIN(planes, AV_NUM_DATA_POINTERS); i++) {
632 frame->buf[i] = av_buffer_pool_get(pool->pools[0]);
633 if (!frame->buf[i])
634 goto fail;
635 frame->extended_data[i] = frame->data[i] = frame->buf[i]->data;
636 }
637 for (i = 0; i < frame->nb_extended_buf; i++) {
638 frame->extended_buf[i] = av_buffer_pool_get(pool->pools[0]);
639 if (!frame->extended_buf[i])
640 goto fail;
641 frame->extended_data[i + AV_NUM_DATA_POINTERS] = frame->extended_buf[i]->data;
642 }
643
644 if (avctx->debug & FF_DEBUG_BUFFERS)
645 av_log(avctx, AV_LOG_DEBUG, "default_get_buffer called on frame %p", frame);
646
647 return 0;
648 fail:
649 av_frame_unref(frame);
650 return AVERROR(ENOMEM);
651 }
652
video_get_buffer(AVCodecContext * s,AVFrame * pic)653 static int video_get_buffer(AVCodecContext *s, AVFrame *pic)
654 {
655 FramePool *pool = s->internal->pool;
656 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pic->format);
657 int i;
658
659 if (pic->data[0] || pic->data[1] || pic->data[2] || pic->data[3]) {
660 av_log(s, AV_LOG_ERROR, "pic->data[*]!=NULL in avcodec_default_get_buffer\n");
661 return -1;
662 }
663
664 if (!desc) {
665 av_log(s, AV_LOG_ERROR,
666 "Unable to get pixel format descriptor for format %s\n",
667 av_get_pix_fmt_name(pic->format));
668 return AVERROR(EINVAL);
669 }
670
671 memset(pic->data, 0, sizeof(pic->data));
672 pic->extended_data = pic->data;
673
674 for (i = 0; i < 4 && pool->pools[i]; i++) {
675 pic->linesize[i] = pool->linesize[i];
676
677 pic->buf[i] = av_buffer_pool_get(pool->pools[i]);
678 if (!pic->buf[i])
679 goto fail;
680
681 pic->data[i] = pic->buf[i]->data;
682 }
683 for (; i < AV_NUM_DATA_POINTERS; i++) {
684 pic->data[i] = NULL;
685 pic->linesize[i] = 0;
686 }
687 if (desc->flags & AV_PIX_FMT_FLAG_PAL ||
688 desc->flags & AV_PIX_FMT_FLAG_PSEUDOPAL)
689 avpriv_set_systematic_pal2((uint32_t *)pic->data[1], pic->format);
690
691 if (s->debug & FF_DEBUG_BUFFERS)
692 av_log(s, AV_LOG_DEBUG, "default_get_buffer called on pic %p\n", pic);
693
694 return 0;
695 fail:
696 av_frame_unref(pic);
697 return AVERROR(ENOMEM);
698 }
699
ff_color_frame(AVFrame * frame,const int c[4])700 void ff_color_frame(AVFrame *frame, const int c[4])
701 {
702 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(frame->format);
703 int p, y, x;
704
705 av_assert0(desc->flags & AV_PIX_FMT_FLAG_PLANAR);
706
707 for (p = 0; p<desc->nb_components; p++) {
708 uint8_t *dst = frame->data[p];
709 int is_chroma = p == 1 || p == 2;
710 int bytes = is_chroma ? AV_CEIL_RSHIFT(frame->width, desc->log2_chroma_w) : frame->width;
711 int height = is_chroma ? AV_CEIL_RSHIFT(frame->height, desc->log2_chroma_h) : frame->height;
712 for (y = 0; y < height; y++) {
713 if (desc->comp[0].depth >= 9) {
714 for (x = 0; x<bytes; x++)
715 ((uint16_t*)dst)[x] = c[p];
716 }else
717 memset(dst, c[p], bytes);
718 dst += frame->linesize[p];
719 }
720 }
721 }
722
avcodec_default_get_buffer2(AVCodecContext * avctx,AVFrame * frame,int flags)723 int avcodec_default_get_buffer2(AVCodecContext *avctx, AVFrame *frame, int flags)
724 {
725 int ret;
726
727 if ((ret = update_frame_pool(avctx, frame)) < 0)
728 return ret;
729
730 switch (avctx->codec_type) {
731 case AVMEDIA_TYPE_VIDEO:
732 return video_get_buffer(avctx, frame);
733 case AVMEDIA_TYPE_AUDIO:
734 return audio_get_buffer(avctx, frame);
735 default:
736 return -1;
737 }
738 }
739
add_metadata_from_side_data(AVPacket * avpkt,AVFrame * frame)740 static int add_metadata_from_side_data(AVPacket *avpkt, AVFrame *frame)
741 {
742 int size;
743 const uint8_t *side_metadata;
744
745 AVDictionary **frame_md = avpriv_frame_get_metadatap(frame);
746
747 side_metadata = av_packet_get_side_data(avpkt,
748 AV_PKT_DATA_STRINGS_METADATA, &size);
749 return av_packet_unpack_dictionary(side_metadata, size, frame_md);
750 }
751
ff_init_buffer_info(AVCodecContext * avctx,AVFrame * frame)752 int ff_init_buffer_info(AVCodecContext *avctx, AVFrame *frame)
753 {
754 AVPacket *pkt = avctx->internal->pkt;
755 int i;
756 static const struct {
757 enum AVPacketSideDataType packet;
758 enum AVFrameSideDataType frame;
759 } sd[] = {
760 { AV_PKT_DATA_REPLAYGAIN , AV_FRAME_DATA_REPLAYGAIN },
761 { AV_PKT_DATA_DISPLAYMATRIX, AV_FRAME_DATA_DISPLAYMATRIX },
762 { AV_PKT_DATA_STEREO3D, AV_FRAME_DATA_STEREO3D },
763 { AV_PKT_DATA_AUDIO_SERVICE_TYPE, AV_FRAME_DATA_AUDIO_SERVICE_TYPE },
764 { AV_PKT_DATA_MASTERING_DISPLAY_METADATA, AV_FRAME_DATA_MASTERING_DISPLAY_METADATA },
765 };
766
767 if (pkt) {
768 frame->pkt_pts = pkt->pts;
769 av_frame_set_pkt_pos (frame, pkt->pos);
770 av_frame_set_pkt_duration(frame, pkt->duration);
771 av_frame_set_pkt_size (frame, pkt->size);
772
773 for (i = 0; i < FF_ARRAY_ELEMS(sd); i++) {
774 int size;
775 uint8_t *packet_sd = av_packet_get_side_data(pkt, sd[i].packet, &size);
776 if (packet_sd) {
777 AVFrameSideData *frame_sd = av_frame_new_side_data(frame,
778 sd[i].frame,
779 size);
780 if (!frame_sd)
781 return AVERROR(ENOMEM);
782
783 memcpy(frame_sd->data, packet_sd, size);
784 }
785 }
786 add_metadata_from_side_data(pkt, frame);
787 } else {
788 frame->pkt_pts = AV_NOPTS_VALUE;
789 av_frame_set_pkt_pos (frame, -1);
790 av_frame_set_pkt_duration(frame, 0);
791 av_frame_set_pkt_size (frame, -1);
792 }
793 frame->reordered_opaque = avctx->reordered_opaque;
794
795 if (frame->color_primaries == AVCOL_PRI_UNSPECIFIED)
796 frame->color_primaries = avctx->color_primaries;
797 if (frame->color_trc == AVCOL_TRC_UNSPECIFIED)
798 frame->color_trc = avctx->color_trc;
799 if (av_frame_get_colorspace(frame) == AVCOL_SPC_UNSPECIFIED)
800 av_frame_set_colorspace(frame, avctx->colorspace);
801 if (av_frame_get_color_range(frame) == AVCOL_RANGE_UNSPECIFIED)
802 av_frame_set_color_range(frame, avctx->color_range);
803 if (frame->chroma_location == AVCHROMA_LOC_UNSPECIFIED)
804 frame->chroma_location = avctx->chroma_sample_location;
805
806 switch (avctx->codec->type) {
807 case AVMEDIA_TYPE_VIDEO:
808 frame->format = avctx->pix_fmt;
809 if (!frame->sample_aspect_ratio.num)
810 frame->sample_aspect_ratio = avctx->sample_aspect_ratio;
811
812 if (frame->width && frame->height &&
813 av_image_check_sar(frame->width, frame->height,
814 frame->sample_aspect_ratio) < 0) {
815 av_log(avctx, AV_LOG_WARNING, "ignoring invalid SAR: %u/%u\n",
816 frame->sample_aspect_ratio.num,
817 frame->sample_aspect_ratio.den);
818 frame->sample_aspect_ratio = (AVRational){ 0, 1 };
819 }
820
821 break;
822 case AVMEDIA_TYPE_AUDIO:
823 if (!frame->sample_rate)
824 frame->sample_rate = avctx->sample_rate;
825 if (frame->format < 0)
826 frame->format = avctx->sample_fmt;
827 if (!frame->channel_layout) {
828 if (avctx->channel_layout) {
829 if (av_get_channel_layout_nb_channels(avctx->channel_layout) !=
830 avctx->channels) {
831 av_log(avctx, AV_LOG_ERROR, "Inconsistent channel "
832 "configuration.\n");
833 return AVERROR(EINVAL);
834 }
835
836 frame->channel_layout = avctx->channel_layout;
837 } else {
838 if (avctx->channels > FF_SANE_NB_CHANNELS) {
839 av_log(avctx, AV_LOG_ERROR, "Too many channels: %d.\n",
840 avctx->channels);
841 return AVERROR(ENOSYS);
842 }
843 }
844 }
845 av_frame_set_channels(frame, avctx->channels);
846 break;
847 }
848 return 0;
849 }
850
ff_decode_frame_props(AVCodecContext * avctx,AVFrame * frame)851 int ff_decode_frame_props(AVCodecContext *avctx, AVFrame *frame)
852 {
853 return ff_init_buffer_info(avctx, frame);
854 }
855
validate_avframe_allocation(AVCodecContext * avctx,AVFrame * frame)856 static void validate_avframe_allocation(AVCodecContext *avctx, AVFrame *frame)
857 {
858 if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
859 int i;
860 int num_planes = av_pix_fmt_count_planes(frame->format);
861 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(frame->format);
862 int flags = desc ? desc->flags : 0;
863 if (num_planes == 1 && (flags & AV_PIX_FMT_FLAG_PAL))
864 num_planes = 2;
865 for (i = 0; i < num_planes; i++) {
866 av_assert0(frame->data[i]);
867 }
868 // For now do not enforce anything for palette of pseudopal formats
869 if (num_planes == 1 && (flags & AV_PIX_FMT_FLAG_PSEUDOPAL))
870 num_planes = 2;
871 // For formats without data like hwaccel allow unused pointers to be non-NULL.
872 for (i = num_planes; num_planes > 0 && i < FF_ARRAY_ELEMS(frame->data); i++) {
873 if (frame->data[i])
874 av_log(avctx, AV_LOG_ERROR, "Buffer returned by get_buffer2() did not zero unused plane pointers\n");
875 frame->data[i] = NULL;
876 }
877 }
878 }
879
get_buffer_internal(AVCodecContext * avctx,AVFrame * frame,int flags)880 static int get_buffer_internal(AVCodecContext *avctx, AVFrame *frame, int flags)
881 {
882 const AVHWAccel *hwaccel = avctx->hwaccel;
883 int override_dimensions = 1;
884 int ret;
885
886 if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
887 if ((ret = av_image_check_size(avctx->width, avctx->height, 0, avctx)) < 0 || avctx->pix_fmt<0) {
888 av_log(avctx, AV_LOG_ERROR, "video_get_buffer: image parameters invalid\n");
889 return AVERROR(EINVAL);
890 }
891
892 if (frame->width <= 0 || frame->height <= 0) {
893 frame->width = FFMAX(avctx->width, AV_CEIL_RSHIFT(avctx->coded_width, avctx->lowres));
894 frame->height = FFMAX(avctx->height, AV_CEIL_RSHIFT(avctx->coded_height, avctx->lowres));
895 override_dimensions = 0;
896 }
897
898 if (frame->data[0] || frame->data[1] || frame->data[2] || frame->data[3]) {
899 av_log(avctx, AV_LOG_ERROR, "pic->data[*]!=NULL in get_buffer_internal\n");
900 return AVERROR(EINVAL);
901 }
902 }
903 ret = ff_decode_frame_props(avctx, frame);
904 if (ret < 0)
905 return ret;
906
907 if (hwaccel) {
908 if (hwaccel->alloc_frame) {
909 ret = hwaccel->alloc_frame(avctx, frame);
910 goto end;
911 }
912 } else
913 avctx->sw_pix_fmt = avctx->pix_fmt;
914
915 ret = avctx->get_buffer2(avctx, frame, flags);
916 if (ret >= 0)
917 validate_avframe_allocation(avctx, frame);
918
919 end:
920 if (avctx->codec_type == AVMEDIA_TYPE_VIDEO && !override_dimensions) {
921 frame->width = avctx->width;
922 frame->height = avctx->height;
923 }
924
925 return ret;
926 }
927
ff_get_buffer(AVCodecContext * avctx,AVFrame * frame,int flags)928 int ff_get_buffer(AVCodecContext *avctx, AVFrame *frame, int flags)
929 {
930 int ret = get_buffer_internal(avctx, frame, flags);
931 if (ret < 0) {
932 av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
933 frame->width = frame->height = 0;
934 }
935 return ret;
936 }
937
reget_buffer_internal(AVCodecContext * avctx,AVFrame * frame)938 static int reget_buffer_internal(AVCodecContext *avctx, AVFrame *frame)
939 {
940 AVFrame *tmp;
941 int ret;
942
943 av_assert0(avctx->codec_type == AVMEDIA_TYPE_VIDEO);
944
945 if (frame->data[0] && (frame->width != avctx->width || frame->height != avctx->height || frame->format != avctx->pix_fmt)) {
946 av_log(avctx, AV_LOG_WARNING, "Picture changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s in reget buffer()\n",
947 frame->width, frame->height, av_get_pix_fmt_name(frame->format), avctx->width, avctx->height, av_get_pix_fmt_name(avctx->pix_fmt));
948 av_frame_unref(frame);
949 }
950
951 ff_init_buffer_info(avctx, frame);
952
953 if (!frame->data[0])
954 return ff_get_buffer(avctx, frame, AV_GET_BUFFER_FLAG_REF);
955
956 if (av_frame_is_writable(frame))
957 return ff_decode_frame_props(avctx, frame);
958
959 tmp = av_frame_alloc();
960 if (!tmp)
961 return AVERROR(ENOMEM);
962
963 av_frame_move_ref(tmp, frame);
964
965 ret = ff_get_buffer(avctx, frame, AV_GET_BUFFER_FLAG_REF);
966 if (ret < 0) {
967 av_frame_free(&tmp);
968 return ret;
969 }
970
971 av_frame_copy(frame, tmp);
972 av_frame_free(&tmp);
973
974 return 0;
975 }
976
ff_reget_buffer(AVCodecContext * avctx,AVFrame * frame)977 int ff_reget_buffer(AVCodecContext *avctx, AVFrame *frame)
978 {
979 int ret = reget_buffer_internal(avctx, frame);
980 if (ret < 0)
981 av_log(avctx, AV_LOG_ERROR, "reget_buffer() failed\n");
982 return ret;
983 }
984
avcodec_default_execute(AVCodecContext * c,int (* func)(AVCodecContext * c2,void * arg2),void * arg,int * ret,int count,int size)985 int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2), void *arg, int *ret, int count, int size)
986 {
987 int i;
988
989 for (i = 0; i < count; i++) {
990 int r = func(c, (char *)arg + i * size);
991 if (ret)
992 ret[i] = r;
993 }
994 return 0;
995 }
996
avcodec_default_execute2(AVCodecContext * c,int (* func)(AVCodecContext * c2,void * arg2,int jobnr,int threadnr),void * arg,int * ret,int count)997 int avcodec_default_execute2(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2, int jobnr, int threadnr), void *arg, int *ret, int count)
998 {
999 int i;
1000
1001 for (i = 0; i < count; i++) {
1002 int r = func(c, arg, i, 0);
1003 if (ret)
1004 ret[i] = r;
1005 }
1006 return 0;
1007 }
1008
avpriv_find_pix_fmt(const PixelFormatTag * tags,unsigned int fourcc)1009 enum AVPixelFormat avpriv_find_pix_fmt(const PixelFormatTag *tags,
1010 unsigned int fourcc)
1011 {
1012 while (tags->pix_fmt >= 0) {
1013 if (tags->fourcc == fourcc)
1014 return tags->pix_fmt;
1015 tags++;
1016 }
1017 return AV_PIX_FMT_NONE;
1018 }
1019
is_hwaccel_pix_fmt(enum AVPixelFormat pix_fmt)1020 static int is_hwaccel_pix_fmt(enum AVPixelFormat pix_fmt)
1021 {
1022 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
1023 return desc->flags & AV_PIX_FMT_FLAG_HWACCEL;
1024 }
1025
avcodec_default_get_format(struct AVCodecContext * s,const enum AVPixelFormat * fmt)1026 enum AVPixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum AVPixelFormat *fmt)
1027 {
1028 while (*fmt != AV_PIX_FMT_NONE && is_hwaccel_pix_fmt(*fmt))
1029 ++fmt;
1030 return fmt[0];
1031 }
1032
find_hwaccel(enum AVCodecID codec_id,enum AVPixelFormat pix_fmt)1033 static AVHWAccel *find_hwaccel(enum AVCodecID codec_id,
1034 enum AVPixelFormat pix_fmt)
1035 {
1036 AVHWAccel *hwaccel = NULL;
1037
1038 while ((hwaccel = av_hwaccel_next(hwaccel)))
1039 if (hwaccel->id == codec_id
1040 && hwaccel->pix_fmt == pix_fmt)
1041 return hwaccel;
1042 return NULL;
1043 }
1044
setup_hwaccel(AVCodecContext * avctx,const enum AVPixelFormat fmt,const char * name)1045 static int setup_hwaccel(AVCodecContext *avctx,
1046 const enum AVPixelFormat fmt,
1047 const char *name)
1048 {
1049 AVHWAccel *hwa = find_hwaccel(avctx->codec_id, fmt);
1050 int ret = 0;
1051
1052 if (avctx->active_thread_type & FF_THREAD_FRAME) {
1053 av_log(avctx, AV_LOG_WARNING,
1054 "Hardware accelerated decoding with frame threading is known to be unstable and its use is discouraged.\n");
1055 }
1056
1057 if (!hwa) {
1058 av_log(avctx, AV_LOG_ERROR,
1059 "Could not find an AVHWAccel for the pixel format: %s",
1060 name);
1061 return AVERROR(ENOENT);
1062 }
1063
1064 if (hwa->capabilities & HWACCEL_CODEC_CAP_EXPERIMENTAL &&
1065 avctx->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
1066 av_log(avctx, AV_LOG_WARNING, "Ignoring experimental hwaccel: %s\n",
1067 hwa->name);
1068 return AVERROR_PATCHWELCOME;
1069 }
1070
1071 if (hwa->priv_data_size) {
1072 avctx->internal->hwaccel_priv_data = av_mallocz(hwa->priv_data_size);
1073 if (!avctx->internal->hwaccel_priv_data)
1074 return AVERROR(ENOMEM);
1075 }
1076
1077 if (hwa->init) {
1078 ret = hwa->init(avctx);
1079 if (ret < 0) {
1080 av_freep(&avctx->internal->hwaccel_priv_data);
1081 return ret;
1082 }
1083 }
1084
1085 avctx->hwaccel = hwa;
1086
1087 return 0;
1088 }
1089
ff_get_format(AVCodecContext * avctx,const enum AVPixelFormat * fmt)1090 int ff_get_format(AVCodecContext *avctx, const enum AVPixelFormat *fmt)
1091 {
1092 const AVPixFmtDescriptor *desc;
1093 enum AVPixelFormat *choices;
1094 enum AVPixelFormat ret;
1095 unsigned n = 0;
1096
1097 while (fmt[n] != AV_PIX_FMT_NONE)
1098 ++n;
1099
1100 av_assert0(n >= 1);
1101 avctx->sw_pix_fmt = fmt[n - 1];
1102 av_assert2(!is_hwaccel_pix_fmt(avctx->sw_pix_fmt));
1103
1104 choices = av_malloc_array(n + 1, sizeof(*choices));
1105 if (!choices)
1106 return AV_PIX_FMT_NONE;
1107
1108 memcpy(choices, fmt, (n + 1) * sizeof(*choices));
1109
1110 for (;;) {
1111 if (avctx->hwaccel && avctx->hwaccel->uninit)
1112 avctx->hwaccel->uninit(avctx);
1113 av_freep(&avctx->internal->hwaccel_priv_data);
1114 avctx->hwaccel = NULL;
1115
1116 ret = avctx->get_format(avctx, choices);
1117
1118 desc = av_pix_fmt_desc_get(ret);
1119 if (!desc) {
1120 ret = AV_PIX_FMT_NONE;
1121 break;
1122 }
1123
1124 if (!(desc->flags & AV_PIX_FMT_FLAG_HWACCEL))
1125 break;
1126 #if FF_API_CAP_VDPAU
1127 if (avctx->codec->capabilities&AV_CODEC_CAP_HWACCEL_VDPAU)
1128 break;
1129 #endif
1130
1131 if (!setup_hwaccel(avctx, ret, desc->name))
1132 break;
1133
1134 /* Remove failed hwaccel from choices */
1135 for (n = 0; choices[n] != ret; n++)
1136 av_assert0(choices[n] != AV_PIX_FMT_NONE);
1137
1138 do
1139 choices[n] = choices[n + 1];
1140 while (choices[n++] != AV_PIX_FMT_NONE);
1141 }
1142
1143 av_freep(&choices);
1144 return ret;
1145 }
1146
MAKE_ACCESSORS(AVCodecContext,codec,AVRational,pkt_timebase)1147 MAKE_ACCESSORS(AVCodecContext, codec, AVRational, pkt_timebase)
1148 MAKE_ACCESSORS(AVCodecContext, codec, const AVCodecDescriptor *, codec_descriptor)
1149 MAKE_ACCESSORS(AVCodecContext, codec, int, lowres)
1150 MAKE_ACCESSORS(AVCodecContext, codec, int, seek_preroll)
1151 MAKE_ACCESSORS(AVCodecContext, codec, uint16_t*, chroma_intra_matrix)
1152
1153 unsigned av_codec_get_codec_properties(const AVCodecContext *codec)
1154 {
1155 return codec->properties;
1156 }
1157
av_codec_get_max_lowres(const AVCodec * codec)1158 int av_codec_get_max_lowres(const AVCodec *codec)
1159 {
1160 return codec->max_lowres;
1161 }
1162
avpriv_codec_get_cap_skip_frame_fill_param(const AVCodec * codec)1163 int avpriv_codec_get_cap_skip_frame_fill_param(const AVCodec *codec){
1164 return !!(codec->caps_internal & FF_CODEC_CAP_SKIP_FRAME_FILL_PARAM);
1165 }
1166
get_subtitle_defaults(AVSubtitle * sub)1167 static void get_subtitle_defaults(AVSubtitle *sub)
1168 {
1169 memset(sub, 0, sizeof(*sub));
1170 sub->pts = AV_NOPTS_VALUE;
1171 }
1172
get_bit_rate(AVCodecContext * ctx)1173 static int64_t get_bit_rate(AVCodecContext *ctx)
1174 {
1175 int64_t bit_rate;
1176 int bits_per_sample;
1177
1178 switch (ctx->codec_type) {
1179 case AVMEDIA_TYPE_VIDEO:
1180 case AVMEDIA_TYPE_DATA:
1181 case AVMEDIA_TYPE_SUBTITLE:
1182 case AVMEDIA_TYPE_ATTACHMENT:
1183 bit_rate = ctx->bit_rate;
1184 break;
1185 case AVMEDIA_TYPE_AUDIO:
1186 bits_per_sample = av_get_bits_per_sample(ctx->codec_id);
1187 bit_rate = bits_per_sample ? ctx->sample_rate * (int64_t)ctx->channels * bits_per_sample : ctx->bit_rate;
1188 break;
1189 default:
1190 bit_rate = 0;
1191 break;
1192 }
1193 return bit_rate;
1194 }
1195
ff_codec_open2_recursive(AVCodecContext * avctx,const AVCodec * codec,AVDictionary ** options)1196 int attribute_align_arg ff_codec_open2_recursive(AVCodecContext *avctx, const AVCodec *codec, AVDictionary **options)
1197 {
1198 int ret = 0;
1199
1200 ff_unlock_avcodec(codec);
1201
1202 ret = avcodec_open2(avctx, codec, options);
1203
1204 ff_lock_avcodec(avctx, codec);
1205 return ret;
1206 }
1207
avcodec_open2(AVCodecContext * avctx,const AVCodec * codec,AVDictionary ** options)1208 int attribute_align_arg avcodec_open2(AVCodecContext *avctx, const AVCodec *codec, AVDictionary **options)
1209 {
1210 int ret = 0;
1211 AVDictionary *tmp = NULL;
1212 const AVPixFmtDescriptor *pixdesc;
1213
1214 if (avcodec_is_open(avctx))
1215 return 0;
1216
1217 if ((!codec && !avctx->codec)) {
1218 av_log(avctx, AV_LOG_ERROR, "No codec provided to avcodec_open2()\n");
1219 return AVERROR(EINVAL);
1220 }
1221 if ((codec && avctx->codec && codec != avctx->codec)) {
1222 av_log(avctx, AV_LOG_ERROR, "This AVCodecContext was allocated for %s, "
1223 "but %s passed to avcodec_open2()\n", avctx->codec->name, codec->name);
1224 return AVERROR(EINVAL);
1225 }
1226 if (!codec)
1227 codec = avctx->codec;
1228
1229 if (avctx->extradata_size < 0 || avctx->extradata_size >= FF_MAX_EXTRADATA_SIZE)
1230 return AVERROR(EINVAL);
1231
1232 if (options)
1233 av_dict_copy(&tmp, *options, 0);
1234
1235 ret = ff_lock_avcodec(avctx, codec);
1236 if (ret < 0)
1237 return ret;
1238
1239 avctx->internal = av_mallocz(sizeof(AVCodecInternal));
1240 if (!avctx->internal) {
1241 ret = AVERROR(ENOMEM);
1242 goto end;
1243 }
1244
1245 avctx->internal->pool = av_mallocz(sizeof(*avctx->internal->pool));
1246 if (!avctx->internal->pool) {
1247 ret = AVERROR(ENOMEM);
1248 goto free_and_end;
1249 }
1250
1251 avctx->internal->to_free = av_frame_alloc();
1252 if (!avctx->internal->to_free) {
1253 ret = AVERROR(ENOMEM);
1254 goto free_and_end;
1255 }
1256
1257 avctx->internal->buffer_frame = av_frame_alloc();
1258 if (!avctx->internal->buffer_frame) {
1259 ret = AVERROR(ENOMEM);
1260 goto free_and_end;
1261 }
1262
1263 avctx->internal->buffer_pkt = av_packet_alloc();
1264 if (!avctx->internal->buffer_pkt) {
1265 ret = AVERROR(ENOMEM);
1266 goto free_and_end;
1267 }
1268
1269 if (codec->priv_data_size > 0) {
1270 if (!avctx->priv_data) {
1271 avctx->priv_data = av_mallocz(codec->priv_data_size);
1272 if (!avctx->priv_data) {
1273 ret = AVERROR(ENOMEM);
1274 goto end;
1275 }
1276 if (codec->priv_class) {
1277 *(const AVClass **)avctx->priv_data = codec->priv_class;
1278 av_opt_set_defaults(avctx->priv_data);
1279 }
1280 }
1281 if (codec->priv_class && (ret = av_opt_set_dict(avctx->priv_data, &tmp)) < 0)
1282 goto free_and_end;
1283 } else {
1284 avctx->priv_data = NULL;
1285 }
1286 if ((ret = av_opt_set_dict(avctx, &tmp)) < 0)
1287 goto free_and_end;
1288
1289 if (avctx->codec_whitelist && av_match_list(codec->name, avctx->codec_whitelist, ',') <= 0) {
1290 av_log(avctx, AV_LOG_ERROR, "Codec (%s) not on whitelist \'%s\'\n", codec->name, avctx->codec_whitelist);
1291 ret = AVERROR(EINVAL);
1292 goto free_and_end;
1293 }
1294
1295 // only call ff_set_dimensions() for non H.264/VP6F/DXV codecs so as not to overwrite previously setup dimensions
1296 if (!(avctx->coded_width && avctx->coded_height && avctx->width && avctx->height &&
1297 (avctx->codec_id == AV_CODEC_ID_H264 || avctx->codec_id == AV_CODEC_ID_VP6F || avctx->codec_id == AV_CODEC_ID_DXV))) {
1298 if (avctx->coded_width && avctx->coded_height)
1299 ret = ff_set_dimensions(avctx, avctx->coded_width, avctx->coded_height);
1300 else if (avctx->width && avctx->height)
1301 ret = ff_set_dimensions(avctx, avctx->width, avctx->height);
1302 if (ret < 0)
1303 goto free_and_end;
1304 }
1305
1306 if ((avctx->coded_width || avctx->coded_height || avctx->width || avctx->height)
1307 && ( av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx) < 0
1308 || av_image_check_size(avctx->width, avctx->height, 0, avctx) < 0)) {
1309 av_log(avctx, AV_LOG_WARNING, "Ignoring invalid width/height values\n");
1310 ff_set_dimensions(avctx, 0, 0);
1311 }
1312
1313 if (avctx->width > 0 && avctx->height > 0) {
1314 if (av_image_check_sar(avctx->width, avctx->height,
1315 avctx->sample_aspect_ratio) < 0) {
1316 av_log(avctx, AV_LOG_WARNING, "ignoring invalid SAR: %u/%u\n",
1317 avctx->sample_aspect_ratio.num,
1318 avctx->sample_aspect_ratio.den);
1319 avctx->sample_aspect_ratio = (AVRational){ 0, 1 };
1320 }
1321 }
1322
1323 /* if the decoder init function was already called previously,
1324 * free the already allocated subtitle_header before overwriting it */
1325 if (av_codec_is_decoder(codec))
1326 av_freep(&avctx->subtitle_header);
1327
1328 if (avctx->channels > FF_SANE_NB_CHANNELS) {
1329 ret = AVERROR(EINVAL);
1330 goto free_and_end;
1331 }
1332
1333 avctx->codec = codec;
1334 if ((avctx->codec_type == AVMEDIA_TYPE_UNKNOWN || avctx->codec_type == codec->type) &&
1335 avctx->codec_id == AV_CODEC_ID_NONE) {
1336 avctx->codec_type = codec->type;
1337 avctx->codec_id = codec->id;
1338 }
1339 if (avctx->codec_id != codec->id || (avctx->codec_type != codec->type
1340 && avctx->codec_type != AVMEDIA_TYPE_ATTACHMENT)) {
1341 av_log(avctx, AV_LOG_ERROR, "Codec type or id mismatches\n");
1342 ret = AVERROR(EINVAL);
1343 goto free_and_end;
1344 }
1345 avctx->frame_number = 0;
1346 avctx->codec_descriptor = avcodec_descriptor_get(avctx->codec_id);
1347
1348 if ((avctx->codec->capabilities & AV_CODEC_CAP_EXPERIMENTAL) &&
1349 avctx->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
1350 const char *codec_string = av_codec_is_encoder(codec) ? "encoder" : "decoder";
1351 AVCodec *codec2;
1352 av_log(avctx, AV_LOG_ERROR,
1353 "The %s '%s' is experimental but experimental codecs are not enabled, "
1354 "add '-strict %d' if you want to use it.\n",
1355 codec_string, codec->name, FF_COMPLIANCE_EXPERIMENTAL);
1356 codec2 = av_codec_is_encoder(codec) ? avcodec_find_encoder(codec->id) : avcodec_find_decoder(codec->id);
1357 if (!(codec2->capabilities & AV_CODEC_CAP_EXPERIMENTAL))
1358 av_log(avctx, AV_LOG_ERROR, "Alternatively use the non experimental %s '%s'.\n",
1359 codec_string, codec2->name);
1360 ret = AVERROR_EXPERIMENTAL;
1361 goto free_and_end;
1362 }
1363
1364 if (avctx->codec_type == AVMEDIA_TYPE_AUDIO &&
1365 (!avctx->time_base.num || !avctx->time_base.den)) {
1366 avctx->time_base.num = 1;
1367 avctx->time_base.den = avctx->sample_rate;
1368 }
1369
1370 if (!HAVE_THREADS)
1371 av_log(avctx, AV_LOG_WARNING, "Warning: not compiled with thread support, using thread emulation\n");
1372
1373 if (CONFIG_FRAME_THREAD_ENCODER && av_codec_is_encoder(avctx->codec)) {
1374 ff_unlock_avcodec(codec); //we will instantiate a few encoders thus kick the counter to prevent false detection of a problem
1375 ret = ff_frame_thread_encoder_init(avctx, options ? *options : NULL);
1376 ff_lock_avcodec(avctx, codec);
1377 if (ret < 0)
1378 goto free_and_end;
1379 }
1380
1381 if (HAVE_THREADS
1382 && !(avctx->internal->frame_thread_encoder && (avctx->active_thread_type&FF_THREAD_FRAME))) {
1383 ret = ff_thread_init(avctx);
1384 if (ret < 0) {
1385 goto free_and_end;
1386 }
1387 }
1388 if (!HAVE_THREADS && !(codec->capabilities & AV_CODEC_CAP_AUTO_THREADS))
1389 avctx->thread_count = 1;
1390
1391 if (avctx->codec->max_lowres < avctx->lowres || avctx->lowres < 0) {
1392 av_log(avctx, AV_LOG_ERROR, "The maximum value for lowres supported by the decoder is %d\n",
1393 avctx->codec->max_lowres);
1394 ret = AVERROR(EINVAL);
1395 goto free_and_end;
1396 }
1397
1398 #if FF_API_VISMV
1399 if (avctx->debug_mv)
1400 av_log(avctx, AV_LOG_WARNING, "The 'vismv' option is deprecated, "
1401 "see the codecview filter instead.\n");
1402 #endif
1403
1404 if (av_codec_is_encoder(avctx->codec)) {
1405 int i;
1406 #if FF_API_CODED_FRAME
1407 FF_DISABLE_DEPRECATION_WARNINGS
1408 avctx->coded_frame = av_frame_alloc();
1409 if (!avctx->coded_frame) {
1410 ret = AVERROR(ENOMEM);
1411 goto free_and_end;
1412 }
1413 FF_ENABLE_DEPRECATION_WARNINGS
1414 #endif
1415
1416 if (avctx->time_base.num <= 0 || avctx->time_base.den <= 0) {
1417 av_log(avctx, AV_LOG_ERROR, "The encoder timebase is not set.\n");
1418 ret = AVERROR(EINVAL);
1419 goto free_and_end;
1420 }
1421
1422 if (avctx->codec->sample_fmts) {
1423 for (i = 0; avctx->codec->sample_fmts[i] != AV_SAMPLE_FMT_NONE; i++) {
1424 if (avctx->sample_fmt == avctx->codec->sample_fmts[i])
1425 break;
1426 if (avctx->channels == 1 &&
1427 av_get_planar_sample_fmt(avctx->sample_fmt) ==
1428 av_get_planar_sample_fmt(avctx->codec->sample_fmts[i])) {
1429 avctx->sample_fmt = avctx->codec->sample_fmts[i];
1430 break;
1431 }
1432 }
1433 if (avctx->codec->sample_fmts[i] == AV_SAMPLE_FMT_NONE) {
1434 char buf[128];
1435 snprintf(buf, sizeof(buf), "%d", avctx->sample_fmt);
1436 av_log(avctx, AV_LOG_ERROR, "Specified sample format %s is invalid or not supported\n",
1437 (char *)av_x_if_null(av_get_sample_fmt_name(avctx->sample_fmt), buf));
1438 ret = AVERROR(EINVAL);
1439 goto free_and_end;
1440 }
1441 }
1442 if (avctx->codec->pix_fmts) {
1443 for (i = 0; avctx->codec->pix_fmts[i] != AV_PIX_FMT_NONE; i++)
1444 if (avctx->pix_fmt == avctx->codec->pix_fmts[i])
1445 break;
1446 if (avctx->codec->pix_fmts[i] == AV_PIX_FMT_NONE
1447 && !((avctx->codec_id == AV_CODEC_ID_MJPEG || avctx->codec_id == AV_CODEC_ID_LJPEG)
1448 && avctx->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL)) {
1449 char buf[128];
1450 snprintf(buf, sizeof(buf), "%d", avctx->pix_fmt);
1451 av_log(avctx, AV_LOG_ERROR, "Specified pixel format %s is invalid or not supported\n",
1452 (char *)av_x_if_null(av_get_pix_fmt_name(avctx->pix_fmt), buf));
1453 ret = AVERROR(EINVAL);
1454 goto free_and_end;
1455 }
1456 if (avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ420P ||
1457 avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ411P ||
1458 avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ422P ||
1459 avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ440P ||
1460 avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ444P)
1461 avctx->color_range = AVCOL_RANGE_JPEG;
1462 }
1463 if (avctx->codec->supported_samplerates) {
1464 for (i = 0; avctx->codec->supported_samplerates[i] != 0; i++)
1465 if (avctx->sample_rate == avctx->codec->supported_samplerates[i])
1466 break;
1467 if (avctx->codec->supported_samplerates[i] == 0) {
1468 av_log(avctx, AV_LOG_ERROR, "Specified sample rate %d is not supported\n",
1469 avctx->sample_rate);
1470 ret = AVERROR(EINVAL);
1471 goto free_and_end;
1472 }
1473 }
1474 if (avctx->sample_rate < 0) {
1475 av_log(avctx, AV_LOG_ERROR, "Specified sample rate %d is not supported\n",
1476 avctx->sample_rate);
1477 ret = AVERROR(EINVAL);
1478 goto free_and_end;
1479 }
1480 if (avctx->codec->channel_layouts) {
1481 if (!avctx->channel_layout) {
1482 av_log(avctx, AV_LOG_WARNING, "Channel layout not specified\n");
1483 } else {
1484 for (i = 0; avctx->codec->channel_layouts[i] != 0; i++)
1485 if (avctx->channel_layout == avctx->codec->channel_layouts[i])
1486 break;
1487 if (avctx->codec->channel_layouts[i] == 0) {
1488 char buf[512];
1489 av_get_channel_layout_string(buf, sizeof(buf), -1, avctx->channel_layout);
1490 av_log(avctx, AV_LOG_ERROR, "Specified channel layout '%s' is not supported\n", buf);
1491 ret = AVERROR(EINVAL);
1492 goto free_and_end;
1493 }
1494 }
1495 }
1496 if (avctx->channel_layout && avctx->channels) {
1497 int channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
1498 if (channels != avctx->channels) {
1499 char buf[512];
1500 av_get_channel_layout_string(buf, sizeof(buf), -1, avctx->channel_layout);
1501 av_log(avctx, AV_LOG_ERROR,
1502 "Channel layout '%s' with %d channels does not match number of specified channels %d\n",
1503 buf, channels, avctx->channels);
1504 ret = AVERROR(EINVAL);
1505 goto free_and_end;
1506 }
1507 } else if (avctx->channel_layout) {
1508 avctx->channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
1509 }
1510 if (avctx->channels < 0) {
1511 av_log(avctx, AV_LOG_ERROR, "Specified number of channels %d is not supported\n",
1512 avctx->channels);
1513 ret = AVERROR(EINVAL);
1514 goto free_and_end;
1515 }
1516 if(avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
1517 pixdesc = av_pix_fmt_desc_get(avctx->pix_fmt);
1518 if ( avctx->bits_per_raw_sample < 0
1519 || (avctx->bits_per_raw_sample > 8 && pixdesc->comp[0].depth <= 8)) {
1520 av_log(avctx, AV_LOG_WARNING, "Specified bit depth %d not possible with the specified pixel formats depth %d\n",
1521 avctx->bits_per_raw_sample, pixdesc->comp[0].depth);
1522 avctx->bits_per_raw_sample = pixdesc->comp[0].depth;
1523 }
1524 if (avctx->width <= 0 || avctx->height <= 0) {
1525 av_log(avctx, AV_LOG_ERROR, "dimensions not set\n");
1526 ret = AVERROR(EINVAL);
1527 goto free_and_end;
1528 }
1529 }
1530 if ( (avctx->codec_type == AVMEDIA_TYPE_VIDEO || avctx->codec_type == AVMEDIA_TYPE_AUDIO)
1531 && avctx->bit_rate>0 && avctx->bit_rate<1000) {
1532 av_log(avctx, AV_LOG_WARNING, "Bitrate %"PRId64" is extremely low, maybe you mean %"PRId64"k\n", (int64_t)avctx->bit_rate, (int64_t)avctx->bit_rate);
1533 }
1534
1535 if (!avctx->rc_initial_buffer_occupancy)
1536 avctx->rc_initial_buffer_occupancy = avctx->rc_buffer_size * 3 / 4;
1537
1538 if (avctx->ticks_per_frame && avctx->time_base.num &&
1539 avctx->ticks_per_frame > INT_MAX / avctx->time_base.num) {
1540 av_log(avctx, AV_LOG_ERROR,
1541 "ticks_per_frame %d too large for the timebase %d/%d.",
1542 avctx->ticks_per_frame,
1543 avctx->time_base.num,
1544 avctx->time_base.den);
1545 goto free_and_end;
1546 }
1547
1548 if (avctx->hw_frames_ctx) {
1549 AVHWFramesContext *frames_ctx = (AVHWFramesContext*)avctx->hw_frames_ctx->data;
1550 if (frames_ctx->format != avctx->pix_fmt) {
1551 av_log(avctx, AV_LOG_ERROR,
1552 "Mismatching AVCodecContext.pix_fmt and AVHWFramesContext.format\n");
1553 ret = AVERROR(EINVAL);
1554 goto free_and_end;
1555 }
1556 }
1557 }
1558
1559 avctx->pts_correction_num_faulty_pts =
1560 avctx->pts_correction_num_faulty_dts = 0;
1561 avctx->pts_correction_last_pts =
1562 avctx->pts_correction_last_dts = INT64_MIN;
1563
1564 if ( !CONFIG_GRAY && avctx->flags & AV_CODEC_FLAG_GRAY
1565 && avctx->codec_descriptor->type == AVMEDIA_TYPE_VIDEO)
1566 av_log(avctx, AV_LOG_WARNING,
1567 "gray decoding requested but not enabled at configuration time\n");
1568
1569 if ( avctx->codec->init && (!(avctx->active_thread_type&FF_THREAD_FRAME)
1570 || avctx->internal->frame_thread_encoder)) {
1571 ret = avctx->codec->init(avctx);
1572 if (ret < 0) {
1573 goto free_and_end;
1574 }
1575 }
1576
1577 ret=0;
1578
1579 #if FF_API_AUDIOENC_DELAY
1580 if (av_codec_is_encoder(avctx->codec))
1581 avctx->delay = avctx->initial_padding;
1582 #endif
1583
1584 if (av_codec_is_decoder(avctx->codec)) {
1585 if (!avctx->bit_rate)
1586 avctx->bit_rate = get_bit_rate(avctx);
1587 /* validate channel layout from the decoder */
1588 if (avctx->channel_layout) {
1589 int channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
1590 if (!avctx->channels)
1591 avctx->channels = channels;
1592 else if (channels != avctx->channels) {
1593 char buf[512];
1594 av_get_channel_layout_string(buf, sizeof(buf), -1, avctx->channel_layout);
1595 av_log(avctx, AV_LOG_WARNING,
1596 "Channel layout '%s' with %d channels does not match specified number of channels %d: "
1597 "ignoring specified channel layout\n",
1598 buf, channels, avctx->channels);
1599 avctx->channel_layout = 0;
1600 }
1601 }
1602 if (avctx->channels && avctx->channels < 0 ||
1603 avctx->channels > FF_SANE_NB_CHANNELS) {
1604 ret = AVERROR(EINVAL);
1605 goto free_and_end;
1606 }
1607 if (avctx->sub_charenc) {
1608 if (avctx->codec_type != AVMEDIA_TYPE_SUBTITLE) {
1609 av_log(avctx, AV_LOG_ERROR, "Character encoding is only "
1610 "supported with subtitles codecs\n");
1611 ret = AVERROR(EINVAL);
1612 goto free_and_end;
1613 } else if (avctx->codec_descriptor->props & AV_CODEC_PROP_BITMAP_SUB) {
1614 av_log(avctx, AV_LOG_WARNING, "Codec '%s' is bitmap-based, "
1615 "subtitles character encoding will be ignored\n",
1616 avctx->codec_descriptor->name);
1617 avctx->sub_charenc_mode = FF_SUB_CHARENC_MODE_DO_NOTHING;
1618 } else {
1619 /* input character encoding is set for a text based subtitle
1620 * codec at this point */
1621 if (avctx->sub_charenc_mode == FF_SUB_CHARENC_MODE_AUTOMATIC)
1622 avctx->sub_charenc_mode = FF_SUB_CHARENC_MODE_PRE_DECODER;
1623
1624 if (avctx->sub_charenc_mode == FF_SUB_CHARENC_MODE_PRE_DECODER) {
1625 #if CONFIG_ICONV
1626 iconv_t cd = iconv_open("UTF-8", avctx->sub_charenc);
1627 if (cd == (iconv_t)-1) {
1628 ret = AVERROR(errno);
1629 av_log(avctx, AV_LOG_ERROR, "Unable to open iconv context "
1630 "with input character encoding \"%s\"\n", avctx->sub_charenc);
1631 goto free_and_end;
1632 }
1633 iconv_close(cd);
1634 #else
1635 av_log(avctx, AV_LOG_ERROR, "Character encoding subtitles "
1636 "conversion needs a libavcodec built with iconv support "
1637 "for this codec\n");
1638 ret = AVERROR(ENOSYS);
1639 goto free_and_end;
1640 #endif
1641 }
1642 }
1643 }
1644
1645 #if FF_API_AVCTX_TIMEBASE
1646 if (avctx->framerate.num > 0 && avctx->framerate.den > 0)
1647 avctx->time_base = av_inv_q(av_mul_q(avctx->framerate, (AVRational){avctx->ticks_per_frame, 1}));
1648 #endif
1649 }
1650 if (codec->priv_data_size > 0 && avctx->priv_data && codec->priv_class) {
1651 av_assert0(*(const AVClass **)avctx->priv_data == codec->priv_class);
1652 }
1653
1654 end:
1655 ff_unlock_avcodec(codec);
1656 if (options) {
1657 av_dict_free(options);
1658 *options = tmp;
1659 }
1660
1661 return ret;
1662 free_and_end:
1663 if (avctx->codec &&
1664 (avctx->codec->caps_internal & FF_CODEC_CAP_INIT_CLEANUP))
1665 avctx->codec->close(avctx);
1666
1667 if (codec->priv_class && codec->priv_data_size)
1668 av_opt_free(avctx->priv_data);
1669 av_opt_free(avctx);
1670
1671 #if FF_API_CODED_FRAME
1672 FF_DISABLE_DEPRECATION_WARNINGS
1673 av_frame_free(&avctx->coded_frame);
1674 FF_ENABLE_DEPRECATION_WARNINGS
1675 #endif
1676
1677 av_dict_free(&tmp);
1678 av_freep(&avctx->priv_data);
1679 if (avctx->internal) {
1680 av_packet_free(&avctx->internal->buffer_pkt);
1681 av_frame_free(&avctx->internal->buffer_frame);
1682 av_frame_free(&avctx->internal->to_free);
1683 av_freep(&avctx->internal->pool);
1684 }
1685 av_freep(&avctx->internal);
1686 avctx->codec = NULL;
1687 goto end;
1688 }
1689
ff_alloc_packet2(AVCodecContext * avctx,AVPacket * avpkt,int64_t size,int64_t min_size)1690 int ff_alloc_packet2(AVCodecContext *avctx, AVPacket *avpkt, int64_t size, int64_t min_size)
1691 {
1692 if (avpkt->size < 0) {
1693 av_log(avctx, AV_LOG_ERROR, "Invalid negative user packet size %d\n", avpkt->size);
1694 return AVERROR(EINVAL);
1695 }
1696 if (size < 0 || size > INT_MAX - AV_INPUT_BUFFER_PADDING_SIZE) {
1697 av_log(avctx, AV_LOG_ERROR, "Invalid minimum required packet size %"PRId64" (max allowed is %d)\n",
1698 size, INT_MAX - AV_INPUT_BUFFER_PADDING_SIZE);
1699 return AVERROR(EINVAL);
1700 }
1701
1702 if (avctx && 2*min_size < size) { // FIXME The factor needs to be finetuned
1703 av_assert0(!avpkt->data || avpkt->data != avctx->internal->byte_buffer);
1704 if (!avpkt->data || avpkt->size < size) {
1705 av_fast_padded_malloc(&avctx->internal->byte_buffer, &avctx->internal->byte_buffer_size, size);
1706 avpkt->data = avctx->internal->byte_buffer;
1707 avpkt->size = avctx->internal->byte_buffer_size;
1708 }
1709 }
1710
1711 if (avpkt->data) {
1712 AVBufferRef *buf = avpkt->buf;
1713
1714 if (avpkt->size < size) {
1715 av_log(avctx, AV_LOG_ERROR, "User packet is too small (%d < %"PRId64")\n", avpkt->size, size);
1716 return AVERROR(EINVAL);
1717 }
1718
1719 av_init_packet(avpkt);
1720 avpkt->buf = buf;
1721 avpkt->size = size;
1722 return 0;
1723 } else {
1724 int ret = av_new_packet(avpkt, size);
1725 if (ret < 0)
1726 av_log(avctx, AV_LOG_ERROR, "Failed to allocate packet of size %"PRId64"\n", size);
1727 return ret;
1728 }
1729 }
1730
ff_alloc_packet(AVPacket * avpkt,int size)1731 int ff_alloc_packet(AVPacket *avpkt, int size)
1732 {
1733 return ff_alloc_packet2(NULL, avpkt, size, 0);
1734 }
1735
1736 /**
1737 * Pad last frame with silence.
1738 */
pad_last_frame(AVCodecContext * s,AVFrame ** dst,const AVFrame * src)1739 static int pad_last_frame(AVCodecContext *s, AVFrame **dst, const AVFrame *src)
1740 {
1741 AVFrame *frame = NULL;
1742 int ret;
1743
1744 if (!(frame = av_frame_alloc()))
1745 return AVERROR(ENOMEM);
1746
1747 frame->format = src->format;
1748 frame->channel_layout = src->channel_layout;
1749 av_frame_set_channels(frame, av_frame_get_channels(src));
1750 frame->nb_samples = s->frame_size;
1751 ret = av_frame_get_buffer(frame, 32);
1752 if (ret < 0)
1753 goto fail;
1754
1755 ret = av_frame_copy_props(frame, src);
1756 if (ret < 0)
1757 goto fail;
1758
1759 if ((ret = av_samples_copy(frame->extended_data, src->extended_data, 0, 0,
1760 src->nb_samples, s->channels, s->sample_fmt)) < 0)
1761 goto fail;
1762 if ((ret = av_samples_set_silence(frame->extended_data, src->nb_samples,
1763 frame->nb_samples - src->nb_samples,
1764 s->channels, s->sample_fmt)) < 0)
1765 goto fail;
1766
1767 *dst = frame;
1768
1769 return 0;
1770
1771 fail:
1772 av_frame_free(&frame);
1773 return ret;
1774 }
1775
avcodec_encode_audio2(AVCodecContext * avctx,AVPacket * avpkt,const AVFrame * frame,int * got_packet_ptr)1776 int attribute_align_arg avcodec_encode_audio2(AVCodecContext *avctx,
1777 AVPacket *avpkt,
1778 const AVFrame *frame,
1779 int *got_packet_ptr)
1780 {
1781 AVFrame *extended_frame = NULL;
1782 AVFrame *padded_frame = NULL;
1783 int ret;
1784 AVPacket user_pkt = *avpkt;
1785 int needs_realloc = !user_pkt.data;
1786
1787 *got_packet_ptr = 0;
1788
1789 if (!avctx->codec->encode2) {
1790 av_log(avctx, AV_LOG_ERROR, "This encoder requires using the avcodec_send_frame() API.\n");
1791 return AVERROR(ENOSYS);
1792 }
1793
1794 if (!(avctx->codec->capabilities & AV_CODEC_CAP_DELAY) && !frame) {
1795 av_packet_unref(avpkt);
1796 av_init_packet(avpkt);
1797 return 0;
1798 }
1799
1800 /* ensure that extended_data is properly set */
1801 if (frame && !frame->extended_data) {
1802 if (av_sample_fmt_is_planar(avctx->sample_fmt) &&
1803 avctx->channels > AV_NUM_DATA_POINTERS) {
1804 av_log(avctx, AV_LOG_ERROR, "Encoding to a planar sample format, "
1805 "with more than %d channels, but extended_data is not set.\n",
1806 AV_NUM_DATA_POINTERS);
1807 return AVERROR(EINVAL);
1808 }
1809 av_log(avctx, AV_LOG_WARNING, "extended_data is not set.\n");
1810
1811 extended_frame = av_frame_alloc();
1812 if (!extended_frame)
1813 return AVERROR(ENOMEM);
1814
1815 memcpy(extended_frame, frame, sizeof(AVFrame));
1816 extended_frame->extended_data = extended_frame->data;
1817 frame = extended_frame;
1818 }
1819
1820 /* extract audio service type metadata */
1821 if (frame) {
1822 AVFrameSideData *sd = av_frame_get_side_data(frame, AV_FRAME_DATA_AUDIO_SERVICE_TYPE);
1823 if (sd && sd->size >= sizeof(enum AVAudioServiceType))
1824 avctx->audio_service_type = *(enum AVAudioServiceType*)sd->data;
1825 }
1826
1827 /* check for valid frame size */
1828 if (frame) {
1829 if (avctx->codec->capabilities & AV_CODEC_CAP_SMALL_LAST_FRAME) {
1830 if (frame->nb_samples > avctx->frame_size) {
1831 av_log(avctx, AV_LOG_ERROR, "more samples than frame size (avcodec_encode_audio2)\n");
1832 ret = AVERROR(EINVAL);
1833 goto end;
1834 }
1835 } else if (!(avctx->codec->capabilities & AV_CODEC_CAP_VARIABLE_FRAME_SIZE)) {
1836 if (frame->nb_samples < avctx->frame_size &&
1837 !avctx->internal->last_audio_frame) {
1838 ret = pad_last_frame(avctx, &padded_frame, frame);
1839 if (ret < 0)
1840 goto end;
1841
1842 frame = padded_frame;
1843 avctx->internal->last_audio_frame = 1;
1844 }
1845
1846 if (frame->nb_samples != avctx->frame_size) {
1847 av_log(avctx, AV_LOG_ERROR, "nb_samples (%d) != frame_size (%d) (avcodec_encode_audio2)\n", frame->nb_samples, avctx->frame_size);
1848 ret = AVERROR(EINVAL);
1849 goto end;
1850 }
1851 }
1852 }
1853
1854 av_assert0(avctx->codec->encode2);
1855
1856 ret = avctx->codec->encode2(avctx, avpkt, frame, got_packet_ptr);
1857 if (!ret) {
1858 if (*got_packet_ptr) {
1859 if (!(avctx->codec->capabilities & AV_CODEC_CAP_DELAY)) {
1860 if (avpkt->pts == AV_NOPTS_VALUE)
1861 avpkt->pts = frame->pts;
1862 if (!avpkt->duration)
1863 avpkt->duration = ff_samples_to_time_base(avctx,
1864 frame->nb_samples);
1865 }
1866 avpkt->dts = avpkt->pts;
1867 } else {
1868 avpkt->size = 0;
1869 }
1870 }
1871 if (avpkt->data && avpkt->data == avctx->internal->byte_buffer) {
1872 needs_realloc = 0;
1873 if (user_pkt.data) {
1874 if (user_pkt.size >= avpkt->size) {
1875 memcpy(user_pkt.data, avpkt->data, avpkt->size);
1876 } else {
1877 av_log(avctx, AV_LOG_ERROR, "Provided packet is too small, needs to be %d\n", avpkt->size);
1878 avpkt->size = user_pkt.size;
1879 ret = -1;
1880 }
1881 avpkt->buf = user_pkt.buf;
1882 avpkt->data = user_pkt.data;
1883 } else {
1884 if (av_dup_packet(avpkt) < 0) {
1885 ret = AVERROR(ENOMEM);
1886 }
1887 }
1888 }
1889
1890 if (!ret) {
1891 if (needs_realloc && avpkt->data) {
1892 ret = av_buffer_realloc(&avpkt->buf, avpkt->size + AV_INPUT_BUFFER_PADDING_SIZE);
1893 if (ret >= 0)
1894 avpkt->data = avpkt->buf->data;
1895 }
1896
1897 avctx->frame_number++;
1898 }
1899
1900 if (ret < 0 || !*got_packet_ptr) {
1901 av_packet_unref(avpkt);
1902 av_init_packet(avpkt);
1903 goto end;
1904 }
1905
1906 /* NOTE: if we add any audio encoders which output non-keyframe packets,
1907 * this needs to be moved to the encoders, but for now we can do it
1908 * here to simplify things */
1909 avpkt->flags |= AV_PKT_FLAG_KEY;
1910
1911 end:
1912 av_frame_free(&padded_frame);
1913 av_free(extended_frame);
1914
1915 #if FF_API_AUDIOENC_DELAY
1916 avctx->delay = avctx->initial_padding;
1917 #endif
1918
1919 return ret;
1920 }
1921
avcodec_encode_video2(AVCodecContext * avctx,AVPacket * avpkt,const AVFrame * frame,int * got_packet_ptr)1922 int attribute_align_arg avcodec_encode_video2(AVCodecContext *avctx,
1923 AVPacket *avpkt,
1924 const AVFrame *frame,
1925 int *got_packet_ptr)
1926 {
1927 int ret;
1928 AVPacket user_pkt = *avpkt;
1929 int needs_realloc = !user_pkt.data;
1930
1931 *got_packet_ptr = 0;
1932
1933 if (!avctx->codec->encode2) {
1934 av_log(avctx, AV_LOG_ERROR, "This encoder requires using the avcodec_send_frame() API.\n");
1935 return AVERROR(ENOSYS);
1936 }
1937
1938 if(CONFIG_FRAME_THREAD_ENCODER &&
1939 avctx->internal->frame_thread_encoder && (avctx->active_thread_type&FF_THREAD_FRAME))
1940 return ff_thread_video_encode_frame(avctx, avpkt, frame, got_packet_ptr);
1941
1942 if ((avctx->flags&AV_CODEC_FLAG_PASS1) && avctx->stats_out)
1943 avctx->stats_out[0] = '\0';
1944
1945 if (!(avctx->codec->capabilities & AV_CODEC_CAP_DELAY) && !frame) {
1946 av_packet_unref(avpkt);
1947 av_init_packet(avpkt);
1948 avpkt->size = 0;
1949 return 0;
1950 }
1951
1952 if (av_image_check_size(avctx->width, avctx->height, 0, avctx))
1953 return AVERROR(EINVAL);
1954
1955 if (frame && frame->format == AV_PIX_FMT_NONE)
1956 av_log(avctx, AV_LOG_WARNING, "AVFrame.format is not set\n");
1957 if (frame && (frame->width == 0 || frame->height == 0))
1958 av_log(avctx, AV_LOG_WARNING, "AVFrame.width or height is not set\n");
1959
1960 av_assert0(avctx->codec->encode2);
1961
1962 ret = avctx->codec->encode2(avctx, avpkt, frame, got_packet_ptr);
1963 av_assert0(ret <= 0);
1964
1965 if (avpkt->data && avpkt->data == avctx->internal->byte_buffer) {
1966 needs_realloc = 0;
1967 if (user_pkt.data) {
1968 if (user_pkt.size >= avpkt->size) {
1969 memcpy(user_pkt.data, avpkt->data, avpkt->size);
1970 } else {
1971 av_log(avctx, AV_LOG_ERROR, "Provided packet is too small, needs to be %d\n", avpkt->size);
1972 avpkt->size = user_pkt.size;
1973 ret = -1;
1974 }
1975 avpkt->buf = user_pkt.buf;
1976 avpkt->data = user_pkt.data;
1977 } else {
1978 if (av_dup_packet(avpkt) < 0) {
1979 ret = AVERROR(ENOMEM);
1980 }
1981 }
1982 }
1983
1984 if (!ret) {
1985 if (!*got_packet_ptr)
1986 avpkt->size = 0;
1987 else if (!(avctx->codec->capabilities & AV_CODEC_CAP_DELAY))
1988 avpkt->pts = avpkt->dts = frame->pts;
1989
1990 if (needs_realloc && avpkt->data) {
1991 ret = av_buffer_realloc(&avpkt->buf, avpkt->size + AV_INPUT_BUFFER_PADDING_SIZE);
1992 if (ret >= 0)
1993 avpkt->data = avpkt->buf->data;
1994 }
1995
1996 avctx->frame_number++;
1997 }
1998
1999 if (ret < 0 || !*got_packet_ptr)
2000 av_packet_unref(avpkt);
2001
2002 emms_c();
2003 return ret;
2004 }
2005
avcodec_encode_subtitle(AVCodecContext * avctx,uint8_t * buf,int buf_size,const AVSubtitle * sub)2006 int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size,
2007 const AVSubtitle *sub)
2008 {
2009 int ret;
2010 if (sub->start_display_time) {
2011 av_log(avctx, AV_LOG_ERROR, "start_display_time must be 0.\n");
2012 return -1;
2013 }
2014
2015 ret = avctx->codec->encode_sub(avctx, buf, buf_size, sub);
2016 avctx->frame_number++;
2017 return ret;
2018 }
2019
2020 /**
2021 * Attempt to guess proper monotonic timestamps for decoded video frames
2022 * which might have incorrect times. Input timestamps may wrap around, in
2023 * which case the output will as well.
2024 *
2025 * @param pts the pts field of the decoded AVPacket, as passed through
2026 * AVFrame.pkt_pts
2027 * @param dts the dts field of the decoded AVPacket
2028 * @return one of the input values, may be AV_NOPTS_VALUE
2029 */
guess_correct_pts(AVCodecContext * ctx,int64_t reordered_pts,int64_t dts)2030 static int64_t guess_correct_pts(AVCodecContext *ctx,
2031 int64_t reordered_pts, int64_t dts)
2032 {
2033 int64_t pts = AV_NOPTS_VALUE;
2034
2035 if (dts != AV_NOPTS_VALUE) {
2036 ctx->pts_correction_num_faulty_dts += dts <= ctx->pts_correction_last_dts;
2037 ctx->pts_correction_last_dts = dts;
2038 } else if (reordered_pts != AV_NOPTS_VALUE)
2039 ctx->pts_correction_last_dts = reordered_pts;
2040
2041 if (reordered_pts != AV_NOPTS_VALUE) {
2042 ctx->pts_correction_num_faulty_pts += reordered_pts <= ctx->pts_correction_last_pts;
2043 ctx->pts_correction_last_pts = reordered_pts;
2044 } else if(dts != AV_NOPTS_VALUE)
2045 ctx->pts_correction_last_pts = dts;
2046
2047 if ((ctx->pts_correction_num_faulty_pts<=ctx->pts_correction_num_faulty_dts || dts == AV_NOPTS_VALUE)
2048 && reordered_pts != AV_NOPTS_VALUE)
2049 pts = reordered_pts;
2050 else
2051 pts = dts;
2052
2053 return pts;
2054 }
2055
apply_param_change(AVCodecContext * avctx,AVPacket * avpkt)2056 static int apply_param_change(AVCodecContext *avctx, AVPacket *avpkt)
2057 {
2058 int size = 0, ret;
2059 const uint8_t *data;
2060 uint32_t flags;
2061 int64_t val;
2062
2063 data = av_packet_get_side_data(avpkt, AV_PKT_DATA_PARAM_CHANGE, &size);
2064 if (!data)
2065 return 0;
2066
2067 if (!(avctx->codec->capabilities & AV_CODEC_CAP_PARAM_CHANGE)) {
2068 av_log(avctx, AV_LOG_ERROR, "This decoder does not support parameter "
2069 "changes, but PARAM_CHANGE side data was sent to it.\n");
2070 ret = AVERROR(EINVAL);
2071 goto fail2;
2072 }
2073
2074 if (size < 4)
2075 goto fail;
2076
2077 flags = bytestream_get_le32(&data);
2078 size -= 4;
2079
2080 if (flags & AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_COUNT) {
2081 if (size < 4)
2082 goto fail;
2083 val = bytestream_get_le32(&data);
2084 if (val <= 0 || val > INT_MAX) {
2085 av_log(avctx, AV_LOG_ERROR, "Invalid channel count");
2086 ret = AVERROR_INVALIDDATA;
2087 goto fail2;
2088 }
2089 avctx->channels = val;
2090 size -= 4;
2091 }
2092 if (flags & AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_LAYOUT) {
2093 if (size < 8)
2094 goto fail;
2095 avctx->channel_layout = bytestream_get_le64(&data);
2096 size -= 8;
2097 }
2098 if (flags & AV_SIDE_DATA_PARAM_CHANGE_SAMPLE_RATE) {
2099 if (size < 4)
2100 goto fail;
2101 val = bytestream_get_le32(&data);
2102 if (val <= 0 || val > INT_MAX) {
2103 av_log(avctx, AV_LOG_ERROR, "Invalid sample rate");
2104 ret = AVERROR_INVALIDDATA;
2105 goto fail2;
2106 }
2107 avctx->sample_rate = val;
2108 size -= 4;
2109 }
2110 if (flags & AV_SIDE_DATA_PARAM_CHANGE_DIMENSIONS) {
2111 if (size < 8)
2112 goto fail;
2113 avctx->width = bytestream_get_le32(&data);
2114 avctx->height = bytestream_get_le32(&data);
2115 size -= 8;
2116 ret = ff_set_dimensions(avctx, avctx->width, avctx->height);
2117 if (ret < 0)
2118 goto fail2;
2119 }
2120
2121 return 0;
2122 fail:
2123 av_log(avctx, AV_LOG_ERROR, "PARAM_CHANGE side data too small.\n");
2124 ret = AVERROR_INVALIDDATA;
2125 fail2:
2126 if (ret < 0) {
2127 av_log(avctx, AV_LOG_ERROR, "Error applying parameter changes.\n");
2128 if (avctx->err_recognition & AV_EF_EXPLODE)
2129 return ret;
2130 }
2131 return 0;
2132 }
2133
unrefcount_frame(AVCodecInternal * avci,AVFrame * frame)2134 static int unrefcount_frame(AVCodecInternal *avci, AVFrame *frame)
2135 {
2136 int ret;
2137
2138 /* move the original frame to our backup */
2139 av_frame_unref(avci->to_free);
2140 av_frame_move_ref(avci->to_free, frame);
2141
2142 /* now copy everything except the AVBufferRefs back
2143 * note that we make a COPY of the side data, so calling av_frame_free() on
2144 * the caller's frame will work properly */
2145 ret = av_frame_copy_props(frame, avci->to_free);
2146 if (ret < 0)
2147 return ret;
2148
2149 memcpy(frame->data, avci->to_free->data, sizeof(frame->data));
2150 memcpy(frame->linesize, avci->to_free->linesize, sizeof(frame->linesize));
2151 if (avci->to_free->extended_data != avci->to_free->data) {
2152 int planes = av_frame_get_channels(avci->to_free);
2153 int size = planes * sizeof(*frame->extended_data);
2154
2155 if (!size) {
2156 av_frame_unref(frame);
2157 return AVERROR_BUG;
2158 }
2159
2160 frame->extended_data = av_malloc(size);
2161 if (!frame->extended_data) {
2162 av_frame_unref(frame);
2163 return AVERROR(ENOMEM);
2164 }
2165 memcpy(frame->extended_data, avci->to_free->extended_data,
2166 size);
2167 } else
2168 frame->extended_data = frame->data;
2169
2170 frame->format = avci->to_free->format;
2171 frame->width = avci->to_free->width;
2172 frame->height = avci->to_free->height;
2173 frame->channel_layout = avci->to_free->channel_layout;
2174 frame->nb_samples = avci->to_free->nb_samples;
2175 av_frame_set_channels(frame, av_frame_get_channels(avci->to_free));
2176
2177 return 0;
2178 }
2179
avcodec_decode_video2(AVCodecContext * avctx,AVFrame * picture,int * got_picture_ptr,const AVPacket * avpkt)2180 int attribute_align_arg avcodec_decode_video2(AVCodecContext *avctx, AVFrame *picture,
2181 int *got_picture_ptr,
2182 const AVPacket *avpkt)
2183 {
2184 AVCodecInternal *avci = avctx->internal;
2185 int ret;
2186 // copy to ensure we do not change avpkt
2187 AVPacket tmp = *avpkt;
2188
2189 if (!avctx->codec)
2190 return AVERROR(EINVAL);
2191 if (avctx->codec->type != AVMEDIA_TYPE_VIDEO) {
2192 av_log(avctx, AV_LOG_ERROR, "Invalid media type for video\n");
2193 return AVERROR(EINVAL);
2194 }
2195
2196 if (!avctx->codec->decode) {
2197 av_log(avctx, AV_LOG_ERROR, "This decoder requires using the avcodec_send_packet() API.\n");
2198 return AVERROR(ENOSYS);
2199 }
2200
2201 *got_picture_ptr = 0;
2202 if ((avctx->coded_width || avctx->coded_height) && av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx))
2203 return AVERROR(EINVAL);
2204
2205 avctx->internal->pkt = avpkt;
2206 ret = apply_param_change(avctx, avpkt);
2207 if (ret < 0)
2208 return ret;
2209
2210 av_frame_unref(picture);
2211
2212 if ((avctx->codec->capabilities & AV_CODEC_CAP_DELAY) || avpkt->size ||
2213 (avctx->active_thread_type & FF_THREAD_FRAME)) {
2214 int did_split = av_packet_split_side_data(&tmp);
2215 ret = apply_param_change(avctx, &tmp);
2216 if (ret < 0)
2217 goto fail;
2218
2219 avctx->internal->pkt = &tmp;
2220 if (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME)
2221 ret = ff_thread_decode_frame(avctx, picture, got_picture_ptr,
2222 &tmp);
2223 else {
2224 ret = avctx->codec->decode(avctx, picture, got_picture_ptr,
2225 &tmp);
2226 if (!(avctx->codec->caps_internal & FF_CODEC_CAP_SETS_PKT_DTS))
2227 picture->pkt_dts = avpkt->dts;
2228
2229 if(!avctx->has_b_frames){
2230 av_frame_set_pkt_pos(picture, avpkt->pos);
2231 }
2232 //FIXME these should be under if(!avctx->has_b_frames)
2233 /* get_buffer is supposed to set frame parameters */
2234 if (!(avctx->codec->capabilities & AV_CODEC_CAP_DR1)) {
2235 if (!picture->sample_aspect_ratio.num) picture->sample_aspect_ratio = avctx->sample_aspect_ratio;
2236 if (!picture->width) picture->width = avctx->width;
2237 if (!picture->height) picture->height = avctx->height;
2238 if (picture->format == AV_PIX_FMT_NONE) picture->format = avctx->pix_fmt;
2239 }
2240 }
2241
2242 fail:
2243 emms_c(); //needed to avoid an emms_c() call before every return;
2244
2245 avctx->internal->pkt = NULL;
2246 if (did_split) {
2247 av_packet_free_side_data(&tmp);
2248 if(ret == tmp.size)
2249 ret = avpkt->size;
2250 }
2251
2252 if (*got_picture_ptr) {
2253 if (!avctx->refcounted_frames) {
2254 int err = unrefcount_frame(avci, picture);
2255 if (err < 0)
2256 return err;
2257 }
2258
2259 avctx->frame_number++;
2260 av_frame_set_best_effort_timestamp(picture,
2261 guess_correct_pts(avctx,
2262 picture->pkt_pts,
2263 picture->pkt_dts));
2264 } else
2265 av_frame_unref(picture);
2266 } else
2267 ret = 0;
2268
2269 /* many decoders assign whole AVFrames, thus overwriting extended_data;
2270 * make sure it's set correctly */
2271 av_assert0(!picture->extended_data || picture->extended_data == picture->data);
2272
2273 #if FF_API_AVCTX_TIMEBASE
2274 if (avctx->framerate.num > 0 && avctx->framerate.den > 0)
2275 avctx->time_base = av_inv_q(av_mul_q(avctx->framerate, (AVRational){avctx->ticks_per_frame, 1}));
2276 #endif
2277
2278 return ret;
2279 }
2280
avcodec_decode_audio4(AVCodecContext * avctx,AVFrame * frame,int * got_frame_ptr,const AVPacket * avpkt)2281 int attribute_align_arg avcodec_decode_audio4(AVCodecContext *avctx,
2282 AVFrame *frame,
2283 int *got_frame_ptr,
2284 const AVPacket *avpkt)
2285 {
2286 AVCodecInternal *avci = avctx->internal;
2287 int ret = 0;
2288
2289 *got_frame_ptr = 0;
2290
2291 if (!avctx->codec)
2292 return AVERROR(EINVAL);
2293
2294 if (!avctx->codec->decode) {
2295 av_log(avctx, AV_LOG_ERROR, "This decoder requires using the avcodec_send_packet() API.\n");
2296 return AVERROR(ENOSYS);
2297 }
2298
2299 if (!avpkt->data && avpkt->size) {
2300 av_log(avctx, AV_LOG_ERROR, "invalid packet: NULL data, size != 0\n");
2301 return AVERROR(EINVAL);
2302 }
2303 if (avctx->codec->type != AVMEDIA_TYPE_AUDIO) {
2304 av_log(avctx, AV_LOG_ERROR, "Invalid media type for audio\n");
2305 return AVERROR(EINVAL);
2306 }
2307
2308 av_frame_unref(frame);
2309
2310 if ((avctx->codec->capabilities & AV_CODEC_CAP_DELAY) || avpkt->size || (avctx->active_thread_type & FF_THREAD_FRAME)) {
2311 uint8_t *side;
2312 int side_size;
2313 uint32_t discard_padding = 0;
2314 uint8_t skip_reason = 0;
2315 uint8_t discard_reason = 0;
2316 // copy to ensure we do not change avpkt
2317 AVPacket tmp = *avpkt;
2318 int did_split = av_packet_split_side_data(&tmp);
2319 ret = apply_param_change(avctx, &tmp);
2320 if (ret < 0)
2321 goto fail;
2322
2323 avctx->internal->pkt = &tmp;
2324 if (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME)
2325 ret = ff_thread_decode_frame(avctx, frame, got_frame_ptr, &tmp);
2326 else {
2327 ret = avctx->codec->decode(avctx, frame, got_frame_ptr, &tmp);
2328 av_assert0(ret <= tmp.size);
2329 frame->pkt_dts = avpkt->dts;
2330 }
2331 if (ret >= 0 && *got_frame_ptr) {
2332 avctx->frame_number++;
2333 av_frame_set_best_effort_timestamp(frame,
2334 guess_correct_pts(avctx,
2335 frame->pkt_pts,
2336 frame->pkt_dts));
2337 if (frame->format == AV_SAMPLE_FMT_NONE)
2338 frame->format = avctx->sample_fmt;
2339 if (!frame->channel_layout)
2340 frame->channel_layout = avctx->channel_layout;
2341 if (!av_frame_get_channels(frame))
2342 av_frame_set_channels(frame, avctx->channels);
2343 if (!frame->sample_rate)
2344 frame->sample_rate = avctx->sample_rate;
2345 }
2346
2347 side= av_packet_get_side_data(avctx->internal->pkt, AV_PKT_DATA_SKIP_SAMPLES, &side_size);
2348 if(side && side_size>=10) {
2349 avctx->internal->skip_samples = AV_RL32(side);
2350 discard_padding = AV_RL32(side + 4);
2351 av_log(avctx, AV_LOG_DEBUG, "skip %d / discard %d samples due to side data\n",
2352 avctx->internal->skip_samples, (int)discard_padding);
2353 skip_reason = AV_RL8(side + 8);
2354 discard_reason = AV_RL8(side + 9);
2355 }
2356 if (avctx->internal->skip_samples > 0 && *got_frame_ptr &&
2357 !(avctx->flags2 & AV_CODEC_FLAG2_SKIP_MANUAL)) {
2358 if(frame->nb_samples <= avctx->internal->skip_samples){
2359 *got_frame_ptr = 0;
2360 avctx->internal->skip_samples -= frame->nb_samples;
2361 av_log(avctx, AV_LOG_DEBUG, "skip whole frame, skip left: %d\n",
2362 avctx->internal->skip_samples);
2363 } else {
2364 av_samples_copy(frame->extended_data, frame->extended_data, 0, avctx->internal->skip_samples,
2365 frame->nb_samples - avctx->internal->skip_samples, avctx->channels, frame->format);
2366 if(avctx->pkt_timebase.num && avctx->sample_rate) {
2367 int64_t diff_ts = av_rescale_q(avctx->internal->skip_samples,
2368 (AVRational){1, avctx->sample_rate},
2369 avctx->pkt_timebase);
2370 if(frame->pkt_pts!=AV_NOPTS_VALUE)
2371 frame->pkt_pts += diff_ts;
2372 if(frame->pkt_dts!=AV_NOPTS_VALUE)
2373 frame->pkt_dts += diff_ts;
2374 if (av_frame_get_pkt_duration(frame) >= diff_ts)
2375 av_frame_set_pkt_duration(frame, av_frame_get_pkt_duration(frame) - diff_ts);
2376 } else {
2377 av_log(avctx, AV_LOG_WARNING, "Could not update timestamps for skipped samples.\n");
2378 }
2379 av_log(avctx, AV_LOG_DEBUG, "skip %d/%d samples\n",
2380 avctx->internal->skip_samples, frame->nb_samples);
2381 frame->nb_samples -= avctx->internal->skip_samples;
2382 avctx->internal->skip_samples = 0;
2383 }
2384 }
2385
2386 if (discard_padding > 0 && discard_padding <= frame->nb_samples && *got_frame_ptr &&
2387 !(avctx->flags2 & AV_CODEC_FLAG2_SKIP_MANUAL)) {
2388 if (discard_padding == frame->nb_samples) {
2389 *got_frame_ptr = 0;
2390 } else {
2391 if(avctx->pkt_timebase.num && avctx->sample_rate) {
2392 int64_t diff_ts = av_rescale_q(frame->nb_samples - discard_padding,
2393 (AVRational){1, avctx->sample_rate},
2394 avctx->pkt_timebase);
2395 av_frame_set_pkt_duration(frame, diff_ts);
2396 } else {
2397 av_log(avctx, AV_LOG_WARNING, "Could not update timestamps for discarded samples.\n");
2398 }
2399 av_log(avctx, AV_LOG_DEBUG, "discard %d/%d samples\n",
2400 (int)discard_padding, frame->nb_samples);
2401 frame->nb_samples -= discard_padding;
2402 }
2403 }
2404
2405 if ((avctx->flags2 & AV_CODEC_FLAG2_SKIP_MANUAL) && *got_frame_ptr) {
2406 AVFrameSideData *fside = av_frame_new_side_data(frame, AV_FRAME_DATA_SKIP_SAMPLES, 10);
2407 if (fside) {
2408 AV_WL32(fside->data, avctx->internal->skip_samples);
2409 AV_WL32(fside->data + 4, discard_padding);
2410 AV_WL8(fside->data + 8, skip_reason);
2411 AV_WL8(fside->data + 9, discard_reason);
2412 avctx->internal->skip_samples = 0;
2413 }
2414 }
2415 fail:
2416 avctx->internal->pkt = NULL;
2417 if (did_split) {
2418 av_packet_free_side_data(&tmp);
2419 if(ret == tmp.size)
2420 ret = avpkt->size;
2421 }
2422
2423 if (ret >= 0 && *got_frame_ptr) {
2424 if (!avctx->refcounted_frames) {
2425 int err = unrefcount_frame(avci, frame);
2426 if (err < 0)
2427 return err;
2428 }
2429 } else
2430 av_frame_unref(frame);
2431 }
2432
2433 av_assert0(ret <= avpkt->size);
2434
2435 return ret;
2436 }
2437
2438 #define UTF8_MAX_BYTES 4 /* 5 and 6 bytes sequences should not be used */
recode_subtitle(AVCodecContext * avctx,AVPacket * outpkt,const AVPacket * inpkt)2439 static int recode_subtitle(AVCodecContext *avctx,
2440 AVPacket *outpkt, const AVPacket *inpkt)
2441 {
2442 #if CONFIG_ICONV
2443 iconv_t cd = (iconv_t)-1;
2444 int ret = 0;
2445 char *inb, *outb;
2446 size_t inl, outl;
2447 AVPacket tmp;
2448 #endif
2449
2450 if (avctx->sub_charenc_mode != FF_SUB_CHARENC_MODE_PRE_DECODER || inpkt->size == 0)
2451 return 0;
2452
2453 #if CONFIG_ICONV
2454 cd = iconv_open("UTF-8", avctx->sub_charenc);
2455 av_assert0(cd != (iconv_t)-1);
2456
2457 inb = inpkt->data;
2458 inl = inpkt->size;
2459
2460 if (inl >= INT_MAX / UTF8_MAX_BYTES - AV_INPUT_BUFFER_PADDING_SIZE) {
2461 av_log(avctx, AV_LOG_ERROR, "Subtitles packet is too big for recoding\n");
2462 ret = AVERROR(ENOMEM);
2463 goto end;
2464 }
2465
2466 ret = av_new_packet(&tmp, inl * UTF8_MAX_BYTES);
2467 if (ret < 0)
2468 goto end;
2469 outpkt->buf = tmp.buf;
2470 outpkt->data = tmp.data;
2471 outpkt->size = tmp.size;
2472 outb = outpkt->data;
2473 outl = outpkt->size;
2474
2475 if (iconv(cd, &inb, &inl, &outb, &outl) == (size_t)-1 ||
2476 iconv(cd, NULL, NULL, &outb, &outl) == (size_t)-1 ||
2477 outl >= outpkt->size || inl != 0) {
2478 ret = FFMIN(AVERROR(errno), -1);
2479 av_log(avctx, AV_LOG_ERROR, "Unable to recode subtitle event \"%s\" "
2480 "from %s to UTF-8\n", inpkt->data, avctx->sub_charenc);
2481 av_packet_unref(&tmp);
2482 goto end;
2483 }
2484 outpkt->size -= outl;
2485 memset(outpkt->data + outpkt->size, 0, outl);
2486
2487 end:
2488 if (cd != (iconv_t)-1)
2489 iconv_close(cd);
2490 return ret;
2491 #else
2492 av_log(avctx, AV_LOG_ERROR, "requesting subtitles recoding without iconv");
2493 return AVERROR(EINVAL);
2494 #endif
2495 }
2496
utf8_check(const uint8_t * str)2497 static int utf8_check(const uint8_t *str)
2498 {
2499 const uint8_t *byte;
2500 uint32_t codepoint, min;
2501
2502 while (*str) {
2503 byte = str;
2504 GET_UTF8(codepoint, *(byte++), return 0;);
2505 min = byte - str == 1 ? 0 : byte - str == 2 ? 0x80 :
2506 1 << (5 * (byte - str) - 4);
2507 if (codepoint < min || codepoint >= 0x110000 ||
2508 codepoint == 0xFFFE /* BOM */ ||
2509 codepoint >= 0xD800 && codepoint <= 0xDFFF /* surrogates */)
2510 return 0;
2511 str = byte;
2512 }
2513 return 1;
2514 }
2515
2516 #if FF_API_ASS_TIMING
insert_ts(AVBPrint * buf,int ts)2517 static void insert_ts(AVBPrint *buf, int ts)
2518 {
2519 if (ts == -1) {
2520 av_bprintf(buf, "9:59:59.99,");
2521 } else {
2522 int h, m, s;
2523
2524 h = ts/360000; ts -= 360000*h;
2525 m = ts/ 6000; ts -= 6000*m;
2526 s = ts/ 100; ts -= 100*s;
2527 av_bprintf(buf, "%d:%02d:%02d.%02d,", h, m, s, ts);
2528 }
2529 }
2530
convert_sub_to_old_ass_form(AVSubtitle * sub,const AVPacket * pkt,AVRational tb)2531 static int convert_sub_to_old_ass_form(AVSubtitle *sub, const AVPacket *pkt, AVRational tb)
2532 {
2533 int i;
2534 AVBPrint buf;
2535
2536 av_bprint_init(&buf, 0, AV_BPRINT_SIZE_UNLIMITED);
2537
2538 for (i = 0; i < sub->num_rects; i++) {
2539 char *final_dialog;
2540 const char *dialog;
2541 AVSubtitleRect *rect = sub->rects[i];
2542 int ts_start, ts_duration = -1;
2543 long int layer;
2544
2545 if (rect->type != SUBTITLE_ASS || !strncmp(rect->ass, "Dialogue: ", 10))
2546 continue;
2547
2548 av_bprint_clear(&buf);
2549
2550 /* skip ReadOrder */
2551 dialog = strchr(rect->ass, ',');
2552 if (!dialog)
2553 continue;
2554 dialog++;
2555
2556 /* extract Layer or Marked */
2557 layer = strtol(dialog, (char**)&dialog, 10);
2558 if (*dialog != ',')
2559 continue;
2560 dialog++;
2561
2562 /* rescale timing to ASS time base (ms) */
2563 ts_start = av_rescale_q(pkt->pts, tb, av_make_q(1, 100));
2564 if (pkt->duration != -1)
2565 ts_duration = av_rescale_q(pkt->duration, tb, av_make_q(1, 100));
2566 sub->end_display_time = FFMAX(sub->end_display_time, 10 * ts_duration);
2567
2568 /* construct ASS (standalone file form with timestamps) string */
2569 av_bprintf(&buf, "Dialogue: %ld,", layer);
2570 insert_ts(&buf, ts_start);
2571 insert_ts(&buf, ts_duration == -1 ? -1 : ts_start + ts_duration);
2572 av_bprintf(&buf, "%s\r\n", dialog);
2573
2574 final_dialog = av_strdup(buf.str);
2575 if (!av_bprint_is_complete(&buf) || !final_dialog) {
2576 av_freep(&final_dialog);
2577 av_bprint_finalize(&buf, NULL);
2578 return AVERROR(ENOMEM);
2579 }
2580 av_freep(&rect->ass);
2581 rect->ass = final_dialog;
2582 }
2583
2584 av_bprint_finalize(&buf, NULL);
2585 return 0;
2586 }
2587 #endif
2588
avcodec_decode_subtitle2(AVCodecContext * avctx,AVSubtitle * sub,int * got_sub_ptr,AVPacket * avpkt)2589 int avcodec_decode_subtitle2(AVCodecContext *avctx, AVSubtitle *sub,
2590 int *got_sub_ptr,
2591 AVPacket *avpkt)
2592 {
2593 int i, ret = 0;
2594
2595 if (!avpkt->data && avpkt->size) {
2596 av_log(avctx, AV_LOG_ERROR, "invalid packet: NULL data, size != 0\n");
2597 return AVERROR(EINVAL);
2598 }
2599 if (!avctx->codec)
2600 return AVERROR(EINVAL);
2601 if (avctx->codec->type != AVMEDIA_TYPE_SUBTITLE) {
2602 av_log(avctx, AV_LOG_ERROR, "Invalid media type for subtitles\n");
2603 return AVERROR(EINVAL);
2604 }
2605
2606 *got_sub_ptr = 0;
2607 get_subtitle_defaults(sub);
2608
2609 if ((avctx->codec->capabilities & AV_CODEC_CAP_DELAY) || avpkt->size) {
2610 AVPacket pkt_recoded;
2611 AVPacket tmp = *avpkt;
2612 int did_split = av_packet_split_side_data(&tmp);
2613 //apply_param_change(avctx, &tmp);
2614
2615 if (did_split) {
2616 /* FFMIN() prevents overflow in case the packet wasn't allocated with
2617 * proper padding.
2618 * If the side data is smaller than the buffer padding size, the
2619 * remaining bytes should have already been filled with zeros by the
2620 * original packet allocation anyway. */
2621 memset(tmp.data + tmp.size, 0,
2622 FFMIN(avpkt->size - tmp.size, AV_INPUT_BUFFER_PADDING_SIZE));
2623 }
2624
2625 pkt_recoded = tmp;
2626 ret = recode_subtitle(avctx, &pkt_recoded, &tmp);
2627 if (ret < 0) {
2628 *got_sub_ptr = 0;
2629 } else {
2630 avctx->internal->pkt = &pkt_recoded;
2631
2632 if (avctx->pkt_timebase.num && avpkt->pts != AV_NOPTS_VALUE)
2633 sub->pts = av_rescale_q(avpkt->pts,
2634 avctx->pkt_timebase, AV_TIME_BASE_Q);
2635 ret = avctx->codec->decode(avctx, sub, got_sub_ptr, &pkt_recoded);
2636 av_assert1((ret >= 0) >= !!*got_sub_ptr &&
2637 !!*got_sub_ptr >= !!sub->num_rects);
2638
2639 #if FF_API_ASS_TIMING
2640 if (avctx->sub_text_format == FF_SUB_TEXT_FMT_ASS_WITH_TIMINGS
2641 && *got_sub_ptr && sub->num_rects) {
2642 const AVRational tb = avctx->pkt_timebase.num ? avctx->pkt_timebase
2643 : avctx->time_base;
2644 int err = convert_sub_to_old_ass_form(sub, avpkt, tb);
2645 if (err < 0)
2646 ret = err;
2647 }
2648 #endif
2649
2650 if (sub->num_rects && !sub->end_display_time && avpkt->duration &&
2651 avctx->pkt_timebase.num) {
2652 AVRational ms = { 1, 1000 };
2653 sub->end_display_time = av_rescale_q(avpkt->duration,
2654 avctx->pkt_timebase, ms);
2655 }
2656
2657 for (i = 0; i < sub->num_rects; i++) {
2658 if (sub->rects[i]->ass && !utf8_check(sub->rects[i]->ass)) {
2659 av_log(avctx, AV_LOG_ERROR,
2660 "Invalid UTF-8 in decoded subtitles text; "
2661 "maybe missing -sub_charenc option\n");
2662 avsubtitle_free(sub);
2663 return AVERROR_INVALIDDATA;
2664 }
2665 }
2666
2667 if (tmp.data != pkt_recoded.data) { // did we recode?
2668 /* prevent from destroying side data from original packet */
2669 pkt_recoded.side_data = NULL;
2670 pkt_recoded.side_data_elems = 0;
2671
2672 av_packet_unref(&pkt_recoded);
2673 }
2674 if (avctx->codec_descriptor->props & AV_CODEC_PROP_BITMAP_SUB)
2675 sub->format = 0;
2676 else if (avctx->codec_descriptor->props & AV_CODEC_PROP_TEXT_SUB)
2677 sub->format = 1;
2678 avctx->internal->pkt = NULL;
2679 }
2680
2681 if (did_split) {
2682 av_packet_free_side_data(&tmp);
2683 if(ret == tmp.size)
2684 ret = avpkt->size;
2685 }
2686
2687 if (*got_sub_ptr)
2688 avctx->frame_number++;
2689 }
2690
2691 return ret;
2692 }
2693
avsubtitle_free(AVSubtitle * sub)2694 void avsubtitle_free(AVSubtitle *sub)
2695 {
2696 int i;
2697
2698 for (i = 0; i < sub->num_rects; i++) {
2699 av_freep(&sub->rects[i]->data[0]);
2700 av_freep(&sub->rects[i]->data[1]);
2701 av_freep(&sub->rects[i]->data[2]);
2702 av_freep(&sub->rects[i]->data[3]);
2703 av_freep(&sub->rects[i]->text);
2704 av_freep(&sub->rects[i]->ass);
2705 av_freep(&sub->rects[i]);
2706 }
2707
2708 av_freep(&sub->rects);
2709
2710 memset(sub, 0, sizeof(AVSubtitle));
2711 }
2712
do_decode(AVCodecContext * avctx,AVPacket * pkt)2713 static int do_decode(AVCodecContext *avctx, AVPacket *pkt)
2714 {
2715 int got_frame;
2716 int ret;
2717
2718 av_assert0(!avctx->internal->buffer_frame->buf[0]);
2719
2720 if (!pkt)
2721 pkt = avctx->internal->buffer_pkt;
2722
2723 // This is the lesser evil. The field is for compatibility with legacy users
2724 // of the legacy API, and users using the new API should not be forced to
2725 // even know about this field.
2726 avctx->refcounted_frames = 1;
2727
2728 // Some codecs (at least wma lossless) will crash when feeding drain packets
2729 // after EOF was signaled.
2730 if (avctx->internal->draining_done)
2731 return AVERROR_EOF;
2732
2733 if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
2734 ret = avcodec_decode_video2(avctx, avctx->internal->buffer_frame,
2735 &got_frame, pkt);
2736 if (ret >= 0)
2737 ret = pkt->size;
2738 } else if (avctx->codec_type == AVMEDIA_TYPE_AUDIO) {
2739 ret = avcodec_decode_audio4(avctx, avctx->internal->buffer_frame,
2740 &got_frame, pkt);
2741 } else {
2742 ret = AVERROR(EINVAL);
2743 }
2744
2745 if (ret == AVERROR(EAGAIN))
2746 ret = pkt->size;
2747
2748 if (ret < 0)
2749 return ret;
2750
2751 if (avctx->internal->draining && !got_frame)
2752 avctx->internal->draining_done = 1;
2753
2754 if (ret >= pkt->size) {
2755 av_packet_unref(avctx->internal->buffer_pkt);
2756 } else {
2757 int consumed = ret;
2758
2759 if (pkt != avctx->internal->buffer_pkt) {
2760 av_packet_unref(avctx->internal->buffer_pkt);
2761 if ((ret = av_packet_ref(avctx->internal->buffer_pkt, pkt)) < 0)
2762 return ret;
2763 }
2764
2765 avctx->internal->buffer_pkt->data += consumed;
2766 avctx->internal->buffer_pkt->size -= consumed;
2767 avctx->internal->buffer_pkt->pts = AV_NOPTS_VALUE;
2768 avctx->internal->buffer_pkt->dts = AV_NOPTS_VALUE;
2769 }
2770
2771 if (got_frame)
2772 av_assert0(avctx->internal->buffer_frame->buf[0]);
2773
2774 return 0;
2775 }
2776
avcodec_send_packet(AVCodecContext * avctx,const AVPacket * avpkt)2777 int attribute_align_arg avcodec_send_packet(AVCodecContext *avctx, const AVPacket *avpkt)
2778 {
2779 int ret;
2780
2781 if (!avcodec_is_open(avctx) || !av_codec_is_decoder(avctx->codec))
2782 return AVERROR(EINVAL);
2783
2784 if (avctx->internal->draining)
2785 return AVERROR_EOF;
2786
2787 if (!avpkt || !avpkt->size) {
2788 avctx->internal->draining = 1;
2789 avpkt = NULL;
2790
2791 if (!(avctx->codec->capabilities & AV_CODEC_CAP_DELAY))
2792 return 0;
2793 }
2794
2795 if (avctx->codec->send_packet) {
2796 if (avpkt) {
2797 AVPacket tmp = *avpkt;
2798 int did_split = av_packet_split_side_data(&tmp);
2799 ret = apply_param_change(avctx, &tmp);
2800 if (ret >= 0)
2801 ret = avctx->codec->send_packet(avctx, &tmp);
2802 if (did_split)
2803 av_packet_free_side_data(&tmp);
2804 return ret;
2805 } else {
2806 return avctx->codec->send_packet(avctx, NULL);
2807 }
2808 }
2809
2810 // Emulation via old API. Assume avpkt is likely not refcounted, while
2811 // decoder output is always refcounted, and avoid copying.
2812
2813 if (avctx->internal->buffer_pkt->size || avctx->internal->buffer_frame->buf[0])
2814 return AVERROR(EAGAIN);
2815
2816 // The goal is decoding the first frame of the packet without using memcpy,
2817 // because the common case is having only 1 frame per packet (especially
2818 // with video, but audio too). In other cases, it can't be avoided, unless
2819 // the user is feeding refcounted packets.
2820 return do_decode(avctx, (AVPacket *)avpkt);
2821 }
2822
avcodec_receive_frame(AVCodecContext * avctx,AVFrame * frame)2823 int attribute_align_arg avcodec_receive_frame(AVCodecContext *avctx, AVFrame *frame)
2824 {
2825 int ret;
2826
2827 av_frame_unref(frame);
2828
2829 if (!avcodec_is_open(avctx) || !av_codec_is_decoder(avctx->codec))
2830 return AVERROR(EINVAL);
2831
2832 if (avctx->codec->receive_frame) {
2833 if (avctx->internal->draining && !(avctx->codec->capabilities & AV_CODEC_CAP_DELAY))
2834 return AVERROR_EOF;
2835 return avctx->codec->receive_frame(avctx, frame);
2836 }
2837
2838 // Emulation via old API.
2839
2840 if (!avctx->internal->buffer_frame->buf[0]) {
2841 if (!avctx->internal->buffer_pkt->size && !avctx->internal->draining)
2842 return AVERROR(EAGAIN);
2843
2844 while (1) {
2845 if ((ret = do_decode(avctx, avctx->internal->buffer_pkt)) < 0) {
2846 av_packet_unref(avctx->internal->buffer_pkt);
2847 return ret;
2848 }
2849 // Some audio decoders may consume partial data without returning
2850 // a frame (fate-wmapro-2ch). There is no way to make the caller
2851 // call avcodec_receive_frame() again without returning a frame,
2852 // so try to decode more in these cases.
2853 if (avctx->internal->buffer_frame->buf[0] ||
2854 !avctx->internal->buffer_pkt->size)
2855 break;
2856 }
2857 }
2858
2859 if (!avctx->internal->buffer_frame->buf[0])
2860 return avctx->internal->draining ? AVERROR_EOF : AVERROR(EAGAIN);
2861
2862 av_frame_move_ref(frame, avctx->internal->buffer_frame);
2863 return 0;
2864 }
2865
do_encode(AVCodecContext * avctx,const AVFrame * frame,int * got_packet)2866 static int do_encode(AVCodecContext *avctx, const AVFrame *frame, int *got_packet)
2867 {
2868 int ret;
2869 *got_packet = 0;
2870
2871 av_packet_unref(avctx->internal->buffer_pkt);
2872 avctx->internal->buffer_pkt_valid = 0;
2873
2874 if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
2875 ret = avcodec_encode_video2(avctx, avctx->internal->buffer_pkt,
2876 frame, got_packet);
2877 } else if (avctx->codec_type == AVMEDIA_TYPE_AUDIO) {
2878 ret = avcodec_encode_audio2(avctx, avctx->internal->buffer_pkt,
2879 frame, got_packet);
2880 } else {
2881 ret = AVERROR(EINVAL);
2882 }
2883
2884 if (ret >= 0 && *got_packet) {
2885 // Encoders must always return ref-counted buffers.
2886 // Side-data only packets have no data and can be not ref-counted.
2887 av_assert0(!avctx->internal->buffer_pkt->data || avctx->internal->buffer_pkt->buf);
2888 avctx->internal->buffer_pkt_valid = 1;
2889 ret = 0;
2890 } else {
2891 av_packet_unref(avctx->internal->buffer_pkt);
2892 }
2893
2894 return ret;
2895 }
2896
avcodec_send_frame(AVCodecContext * avctx,const AVFrame * frame)2897 int attribute_align_arg avcodec_send_frame(AVCodecContext *avctx, const AVFrame *frame)
2898 {
2899 if (!avcodec_is_open(avctx) || !av_codec_is_encoder(avctx->codec))
2900 return AVERROR(EINVAL);
2901
2902 if (avctx->internal->draining)
2903 return AVERROR_EOF;
2904
2905 if (!frame) {
2906 avctx->internal->draining = 1;
2907
2908 if (!(avctx->codec->capabilities & AV_CODEC_CAP_DELAY))
2909 return 0;
2910 }
2911
2912 if (avctx->codec->send_frame)
2913 return avctx->codec->send_frame(avctx, frame);
2914
2915 // Emulation via old API. Do it here instead of avcodec_receive_packet, because:
2916 // 1. if the AVFrame is not refcounted, the copying will be much more
2917 // expensive than copying the packet data
2918 // 2. assume few users use non-refcounted AVPackets, so usually no copy is
2919 // needed
2920
2921 if (avctx->internal->buffer_pkt_valid)
2922 return AVERROR(EAGAIN);
2923
2924 return do_encode(avctx, frame, &(int){0});
2925 }
2926
avcodec_receive_packet(AVCodecContext * avctx,AVPacket * avpkt)2927 int attribute_align_arg avcodec_receive_packet(AVCodecContext *avctx, AVPacket *avpkt)
2928 {
2929 av_packet_unref(avpkt);
2930
2931 if (!avcodec_is_open(avctx) || !av_codec_is_encoder(avctx->codec))
2932 return AVERROR(EINVAL);
2933
2934 if (avctx->codec->receive_packet) {
2935 if (avctx->internal->draining && !(avctx->codec->capabilities & AV_CODEC_CAP_DELAY))
2936 return AVERROR_EOF;
2937 return avctx->codec->receive_packet(avctx, avpkt);
2938 }
2939
2940 // Emulation via old API.
2941
2942 if (!avctx->internal->buffer_pkt_valid) {
2943 int got_packet;
2944 int ret;
2945 if (!avctx->internal->draining)
2946 return AVERROR(EAGAIN);
2947 ret = do_encode(avctx, NULL, &got_packet);
2948 if (ret < 0)
2949 return ret;
2950 if (ret >= 0 && !got_packet)
2951 return AVERROR_EOF;
2952 }
2953
2954 av_packet_move_ref(avpkt, avctx->internal->buffer_pkt);
2955 avctx->internal->buffer_pkt_valid = 0;
2956 return 0;
2957 }
2958
avcodec_close(AVCodecContext * avctx)2959 av_cold int avcodec_close(AVCodecContext *avctx)
2960 {
2961 int i;
2962
2963 if (!avctx)
2964 return 0;
2965
2966 if (avcodec_is_open(avctx)) {
2967 FramePool *pool = avctx->internal->pool;
2968 if (CONFIG_FRAME_THREAD_ENCODER &&
2969 avctx->internal->frame_thread_encoder && avctx->thread_count > 1) {
2970 ff_frame_thread_encoder_free(avctx);
2971 }
2972 if (HAVE_THREADS && avctx->internal->thread_ctx)
2973 ff_thread_free(avctx);
2974 if (avctx->codec && avctx->codec->close)
2975 avctx->codec->close(avctx);
2976 avctx->internal->byte_buffer_size = 0;
2977 av_freep(&avctx->internal->byte_buffer);
2978 av_frame_free(&avctx->internal->to_free);
2979 av_frame_free(&avctx->internal->buffer_frame);
2980 av_packet_free(&avctx->internal->buffer_pkt);
2981 for (i = 0; i < FF_ARRAY_ELEMS(pool->pools); i++)
2982 av_buffer_pool_uninit(&pool->pools[i]);
2983 av_freep(&avctx->internal->pool);
2984
2985 if (avctx->hwaccel && avctx->hwaccel->uninit)
2986 avctx->hwaccel->uninit(avctx);
2987 av_freep(&avctx->internal->hwaccel_priv_data);
2988
2989 av_freep(&avctx->internal);
2990 }
2991
2992 for (i = 0; i < avctx->nb_coded_side_data; i++)
2993 av_freep(&avctx->coded_side_data[i].data);
2994 av_freep(&avctx->coded_side_data);
2995 avctx->nb_coded_side_data = 0;
2996
2997 av_buffer_unref(&avctx->hw_frames_ctx);
2998
2999 if (avctx->priv_data && avctx->codec && avctx->codec->priv_class)
3000 av_opt_free(avctx->priv_data);
3001 av_opt_free(avctx);
3002 av_freep(&avctx->priv_data);
3003 if (av_codec_is_encoder(avctx->codec)) {
3004 av_freep(&avctx->extradata);
3005 #if FF_API_CODED_FRAME
3006 FF_DISABLE_DEPRECATION_WARNINGS
3007 av_frame_free(&avctx->coded_frame);
3008 FF_ENABLE_DEPRECATION_WARNINGS
3009 #endif
3010 }
3011 avctx->codec = NULL;
3012 avctx->active_thread_type = 0;
3013
3014 return 0;
3015 }
3016
remap_deprecated_codec_id(enum AVCodecID id)3017 static enum AVCodecID remap_deprecated_codec_id(enum AVCodecID id)
3018 {
3019 switch(id){
3020 //This is for future deprecatec codec ids, its empty since
3021 //last major bump but will fill up again over time, please don't remove it
3022 default : return id;
3023 }
3024 }
3025
find_encdec(enum AVCodecID id,int encoder)3026 static AVCodec *find_encdec(enum AVCodecID id, int encoder)
3027 {
3028 AVCodec *p, *experimental = NULL;
3029 p = first_avcodec;
3030 id= remap_deprecated_codec_id(id);
3031 while (p) {
3032 if ((encoder ? av_codec_is_encoder(p) : av_codec_is_decoder(p)) &&
3033 p->id == id) {
3034 if (p->capabilities & AV_CODEC_CAP_EXPERIMENTAL && !experimental) {
3035 experimental = p;
3036 } else
3037 return p;
3038 }
3039 p = p->next;
3040 }
3041 return experimental;
3042 }
3043
avcodec_find_encoder(enum AVCodecID id)3044 AVCodec *avcodec_find_encoder(enum AVCodecID id)
3045 {
3046 return find_encdec(id, 1);
3047 }
3048
avcodec_find_encoder_by_name(const char * name)3049 AVCodec *avcodec_find_encoder_by_name(const char *name)
3050 {
3051 AVCodec *p;
3052 if (!name)
3053 return NULL;
3054 p = first_avcodec;
3055 while (p) {
3056 if (av_codec_is_encoder(p) && strcmp(name, p->name) == 0)
3057 return p;
3058 p = p->next;
3059 }
3060 return NULL;
3061 }
3062
avcodec_find_decoder(enum AVCodecID id)3063 AVCodec *avcodec_find_decoder(enum AVCodecID id)
3064 {
3065 return find_encdec(id, 0);
3066 }
3067
avcodec_find_decoder_by_name(const char * name)3068 AVCodec *avcodec_find_decoder_by_name(const char *name)
3069 {
3070 AVCodec *p;
3071 if (!name)
3072 return NULL;
3073 p = first_avcodec;
3074 while (p) {
3075 if (av_codec_is_decoder(p) && strcmp(name, p->name) == 0)
3076 return p;
3077 p = p->next;
3078 }
3079 return NULL;
3080 }
3081
avcodec_get_name(enum AVCodecID id)3082 const char *avcodec_get_name(enum AVCodecID id)
3083 {
3084 const AVCodecDescriptor *cd;
3085 AVCodec *codec;
3086
3087 if (id == AV_CODEC_ID_NONE)
3088 return "none";
3089 cd = avcodec_descriptor_get(id);
3090 if (cd)
3091 return cd->name;
3092 av_log(NULL, AV_LOG_WARNING, "Codec 0x%x is not in the full list.\n", id);
3093 codec = avcodec_find_decoder(id);
3094 if (codec)
3095 return codec->name;
3096 codec = avcodec_find_encoder(id);
3097 if (codec)
3098 return codec->name;
3099 return "unknown_codec";
3100 }
3101
av_get_codec_tag_string(char * buf,size_t buf_size,unsigned int codec_tag)3102 size_t av_get_codec_tag_string(char *buf, size_t buf_size, unsigned int codec_tag)
3103 {
3104 int i, len, ret = 0;
3105
3106 #define TAG_PRINT(x) \
3107 (((x) >= '0' && (x) <= '9') || \
3108 ((x) >= 'a' && (x) <= 'z') || ((x) >= 'A' && (x) <= 'Z') || \
3109 ((x) == '.' || (x) == ' ' || (x) == '-' || (x) == '_'))
3110
3111 for (i = 0; i < 4; i++) {
3112 len = snprintf(buf, buf_size,
3113 TAG_PRINT(codec_tag & 0xFF) ? "%c" : "[%d]", codec_tag & 0xFF);
3114 buf += len;
3115 buf_size = buf_size > len ? buf_size - len : 0;
3116 ret += len;
3117 codec_tag >>= 8;
3118 }
3119 return ret;
3120 }
3121
avcodec_string(char * buf,int buf_size,AVCodecContext * enc,int encode)3122 void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)
3123 {
3124 const char *codec_type;
3125 const char *codec_name;
3126 const char *profile = NULL;
3127 int64_t bitrate;
3128 int new_line = 0;
3129 AVRational display_aspect_ratio;
3130 const char *separator = enc->dump_separator ? (const char *)enc->dump_separator : ", ";
3131
3132 if (!buf || buf_size <= 0)
3133 return;
3134 codec_type = av_get_media_type_string(enc->codec_type);
3135 codec_name = avcodec_get_name(enc->codec_id);
3136 profile = avcodec_profile_name(enc->codec_id, enc->profile);
3137
3138 snprintf(buf, buf_size, "%s: %s", codec_type ? codec_type : "unknown",
3139 codec_name);
3140 buf[0] ^= 'a' ^ 'A'; /* first letter in uppercase */
3141
3142 if (enc->codec && strcmp(enc->codec->name, codec_name))
3143 snprintf(buf + strlen(buf), buf_size - strlen(buf), " (%s)", enc->codec->name);
3144
3145 if (profile)
3146 snprintf(buf + strlen(buf), buf_size - strlen(buf), " (%s)", profile);
3147 if ( enc->codec_type == AVMEDIA_TYPE_VIDEO
3148 && av_log_get_level() >= AV_LOG_VERBOSE
3149 && enc->refs)
3150 snprintf(buf + strlen(buf), buf_size - strlen(buf),
3151 ", %d reference frame%s",
3152 enc->refs, enc->refs > 1 ? "s" : "");
3153
3154 if (enc->codec_tag) {
3155 char tag_buf[32];
3156 av_get_codec_tag_string(tag_buf, sizeof(tag_buf), enc->codec_tag);
3157 snprintf(buf + strlen(buf), buf_size - strlen(buf),
3158 " (%s / 0x%04X)", tag_buf, enc->codec_tag);
3159 }
3160
3161 switch (enc->codec_type) {
3162 case AVMEDIA_TYPE_VIDEO:
3163 {
3164 char detail[256] = "(";
3165
3166 av_strlcat(buf, separator, buf_size);
3167
3168 snprintf(buf + strlen(buf), buf_size - strlen(buf),
3169 "%s", enc->pix_fmt == AV_PIX_FMT_NONE ? "none" :
3170 av_get_pix_fmt_name(enc->pix_fmt));
3171 if (enc->bits_per_raw_sample && enc->pix_fmt != AV_PIX_FMT_NONE &&
3172 enc->bits_per_raw_sample < av_pix_fmt_desc_get(enc->pix_fmt)->comp[0].depth)
3173 av_strlcatf(detail, sizeof(detail), "%d bpc, ", enc->bits_per_raw_sample);
3174 if (enc->color_range != AVCOL_RANGE_UNSPECIFIED)
3175 av_strlcatf(detail, sizeof(detail), "%s, ",
3176 av_color_range_name(enc->color_range));
3177
3178 if (enc->colorspace != AVCOL_SPC_UNSPECIFIED ||
3179 enc->color_primaries != AVCOL_PRI_UNSPECIFIED ||
3180 enc->color_trc != AVCOL_TRC_UNSPECIFIED) {
3181 if (enc->colorspace != (int)enc->color_primaries ||
3182 enc->colorspace != (int)enc->color_trc) {
3183 new_line = 1;
3184 av_strlcatf(detail, sizeof(detail), "%s/%s/%s, ",
3185 av_color_space_name(enc->colorspace),
3186 av_color_primaries_name(enc->color_primaries),
3187 av_color_transfer_name(enc->color_trc));
3188 } else
3189 av_strlcatf(detail, sizeof(detail), "%s, ",
3190 av_get_colorspace_name(enc->colorspace));
3191 }
3192
3193 if (av_log_get_level() >= AV_LOG_DEBUG &&
3194 enc->chroma_sample_location != AVCHROMA_LOC_UNSPECIFIED)
3195 av_strlcatf(detail, sizeof(detail), "%s, ",
3196 av_chroma_location_name(enc->chroma_sample_location));
3197
3198 if (strlen(detail) > 1) {
3199 detail[strlen(detail) - 2] = 0;
3200 av_strlcatf(buf, buf_size, "%s)", detail);
3201 }
3202 }
3203
3204 if (enc->width) {
3205 av_strlcat(buf, new_line ? separator : ", ", buf_size);
3206
3207 snprintf(buf + strlen(buf), buf_size - strlen(buf),
3208 "%dx%d",
3209 enc->width, enc->height);
3210
3211 if (av_log_get_level() >= AV_LOG_VERBOSE &&
3212 (enc->width != enc->coded_width ||
3213 enc->height != enc->coded_height))
3214 snprintf(buf + strlen(buf), buf_size - strlen(buf),
3215 " (%dx%d)", enc->coded_width, enc->coded_height);
3216
3217 if (enc->sample_aspect_ratio.num) {
3218 av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
3219 enc->width * (int64_t)enc->sample_aspect_ratio.num,
3220 enc->height * (int64_t)enc->sample_aspect_ratio.den,
3221 1024 * 1024);
3222 snprintf(buf + strlen(buf), buf_size - strlen(buf),
3223 " [SAR %d:%d DAR %d:%d]",
3224 enc->sample_aspect_ratio.num, enc->sample_aspect_ratio.den,
3225 display_aspect_ratio.num, display_aspect_ratio.den);
3226 }
3227 if (av_log_get_level() >= AV_LOG_DEBUG) {
3228 int g = av_gcd(enc->time_base.num, enc->time_base.den);
3229 snprintf(buf + strlen(buf), buf_size - strlen(buf),
3230 ", %d/%d",
3231 enc->time_base.num / g, enc->time_base.den / g);
3232 }
3233 }
3234 if (encode) {
3235 snprintf(buf + strlen(buf), buf_size - strlen(buf),
3236 ", q=%d-%d", enc->qmin, enc->qmax);
3237 } else {
3238 if (enc->properties & FF_CODEC_PROPERTY_CLOSED_CAPTIONS)
3239 snprintf(buf + strlen(buf), buf_size - strlen(buf),
3240 ", Closed Captions");
3241 if (enc->properties & FF_CODEC_PROPERTY_LOSSLESS)
3242 snprintf(buf + strlen(buf), buf_size - strlen(buf),
3243 ", lossless");
3244 }
3245 break;
3246 case AVMEDIA_TYPE_AUDIO:
3247 av_strlcat(buf, separator, buf_size);
3248
3249 if (enc->sample_rate) {
3250 snprintf(buf + strlen(buf), buf_size - strlen(buf),
3251 "%d Hz, ", enc->sample_rate);
3252 }
3253 av_get_channel_layout_string(buf + strlen(buf), buf_size - strlen(buf), enc->channels, enc->channel_layout);
3254 if (enc->sample_fmt != AV_SAMPLE_FMT_NONE) {
3255 snprintf(buf + strlen(buf), buf_size - strlen(buf),
3256 ", %s", av_get_sample_fmt_name(enc->sample_fmt));
3257 }
3258 if ( enc->bits_per_raw_sample > 0
3259 && enc->bits_per_raw_sample != av_get_bytes_per_sample(enc->sample_fmt) * 8)
3260 snprintf(buf + strlen(buf), buf_size - strlen(buf),
3261 " (%d bit)", enc->bits_per_raw_sample);
3262 break;
3263 case AVMEDIA_TYPE_DATA:
3264 if (av_log_get_level() >= AV_LOG_DEBUG) {
3265 int g = av_gcd(enc->time_base.num, enc->time_base.den);
3266 if (g)
3267 snprintf(buf + strlen(buf), buf_size - strlen(buf),
3268 ", %d/%d",
3269 enc->time_base.num / g, enc->time_base.den / g);
3270 }
3271 break;
3272 case AVMEDIA_TYPE_SUBTITLE:
3273 if (enc->width)
3274 snprintf(buf + strlen(buf), buf_size - strlen(buf),
3275 ", %dx%d", enc->width, enc->height);
3276 break;
3277 default:
3278 return;
3279 }
3280 if (encode) {
3281 if (enc->flags & AV_CODEC_FLAG_PASS1)
3282 snprintf(buf + strlen(buf), buf_size - strlen(buf),
3283 ", pass 1");
3284 if (enc->flags & AV_CODEC_FLAG_PASS2)
3285 snprintf(buf + strlen(buf), buf_size - strlen(buf),
3286 ", pass 2");
3287 }
3288 bitrate = get_bit_rate(enc);
3289 if (bitrate != 0) {
3290 snprintf(buf + strlen(buf), buf_size - strlen(buf),
3291 ", %"PRId64" kb/s", bitrate / 1000);
3292 } else if (enc->rc_max_rate > 0) {
3293 snprintf(buf + strlen(buf), buf_size - strlen(buf),
3294 ", max. %"PRId64" kb/s", (int64_t)enc->rc_max_rate / 1000);
3295 }
3296 }
3297
av_get_profile_name(const AVCodec * codec,int profile)3298 const char *av_get_profile_name(const AVCodec *codec, int profile)
3299 {
3300 const AVProfile *p;
3301 if (profile == FF_PROFILE_UNKNOWN || !codec->profiles)
3302 return NULL;
3303
3304 for (p = codec->profiles; p->profile != FF_PROFILE_UNKNOWN; p++)
3305 if (p->profile == profile)
3306 return p->name;
3307
3308 return NULL;
3309 }
3310
avcodec_profile_name(enum AVCodecID codec_id,int profile)3311 const char *avcodec_profile_name(enum AVCodecID codec_id, int profile)
3312 {
3313 const AVCodecDescriptor *desc = avcodec_descriptor_get(codec_id);
3314 const AVProfile *p;
3315
3316 if (profile == FF_PROFILE_UNKNOWN || !desc || !desc->profiles)
3317 return NULL;
3318
3319 for (p = desc->profiles; p->profile != FF_PROFILE_UNKNOWN; p++)
3320 if (p->profile == profile)
3321 return p->name;
3322
3323 return NULL;
3324 }
3325
avcodec_version(void)3326 unsigned avcodec_version(void)
3327 {
3328 // av_assert0(AV_CODEC_ID_V410==164);
3329 av_assert0(AV_CODEC_ID_PCM_S8_PLANAR==65563);
3330 av_assert0(AV_CODEC_ID_ADPCM_G722==69660);
3331 // av_assert0(AV_CODEC_ID_BMV_AUDIO==86071);
3332 av_assert0(AV_CODEC_ID_SRT==94216);
3333 av_assert0(LIBAVCODEC_VERSION_MICRO >= 100);
3334
3335 return LIBAVCODEC_VERSION_INT;
3336 }
3337
avcodec_configuration(void)3338 const char *avcodec_configuration(void)
3339 {
3340 return FFMPEG_CONFIGURATION;
3341 }
3342
avcodec_license(void)3343 const char *avcodec_license(void)
3344 {
3345 #define LICENSE_PREFIX "libavcodec license: "
3346 return LICENSE_PREFIX FFMPEG_LICENSE + sizeof(LICENSE_PREFIX) - 1;
3347 }
3348
avcodec_flush_buffers(AVCodecContext * avctx)3349 void avcodec_flush_buffers(AVCodecContext *avctx)
3350 {
3351 avctx->internal->draining = 0;
3352 avctx->internal->draining_done = 0;
3353 av_frame_unref(avctx->internal->buffer_frame);
3354 av_packet_unref(avctx->internal->buffer_pkt);
3355 avctx->internal->buffer_pkt_valid = 0;
3356
3357 if (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME)
3358 ff_thread_flush(avctx);
3359 else if (avctx->codec->flush)
3360 avctx->codec->flush(avctx);
3361
3362 avctx->pts_correction_last_pts =
3363 avctx->pts_correction_last_dts = INT64_MIN;
3364
3365 if (!avctx->refcounted_frames)
3366 av_frame_unref(avctx->internal->to_free);
3367 }
3368
av_get_exact_bits_per_sample(enum AVCodecID codec_id)3369 int av_get_exact_bits_per_sample(enum AVCodecID codec_id)
3370 {
3371 switch (codec_id) {
3372 case AV_CODEC_ID_8SVX_EXP:
3373 case AV_CODEC_ID_8SVX_FIB:
3374 case AV_CODEC_ID_ADPCM_CT:
3375 case AV_CODEC_ID_ADPCM_IMA_APC:
3376 case AV_CODEC_ID_ADPCM_IMA_EA_SEAD:
3377 case AV_CODEC_ID_ADPCM_IMA_OKI:
3378 case AV_CODEC_ID_ADPCM_IMA_WS:
3379 case AV_CODEC_ID_ADPCM_G722:
3380 case AV_CODEC_ID_ADPCM_YAMAHA:
3381 case AV_CODEC_ID_ADPCM_AICA:
3382 return 4;
3383 case AV_CODEC_ID_DSD_LSBF:
3384 case AV_CODEC_ID_DSD_MSBF:
3385 case AV_CODEC_ID_DSD_LSBF_PLANAR:
3386 case AV_CODEC_ID_DSD_MSBF_PLANAR:
3387 case AV_CODEC_ID_PCM_ALAW:
3388 case AV_CODEC_ID_PCM_MULAW:
3389 case AV_CODEC_ID_PCM_S8:
3390 case AV_CODEC_ID_PCM_S8_PLANAR:
3391 case AV_CODEC_ID_PCM_U8:
3392 case AV_CODEC_ID_PCM_ZORK:
3393 case AV_CODEC_ID_SDX2_DPCM:
3394 return 8;
3395 case AV_CODEC_ID_PCM_S16BE:
3396 case AV_CODEC_ID_PCM_S16BE_PLANAR:
3397 case AV_CODEC_ID_PCM_S16LE:
3398 case AV_CODEC_ID_PCM_S16LE_PLANAR:
3399 case AV_CODEC_ID_PCM_U16BE:
3400 case AV_CODEC_ID_PCM_U16LE:
3401 return 16;
3402 case AV_CODEC_ID_PCM_S24DAUD:
3403 case AV_CODEC_ID_PCM_S24BE:
3404 case AV_CODEC_ID_PCM_S24LE:
3405 case AV_CODEC_ID_PCM_S24LE_PLANAR:
3406 case AV_CODEC_ID_PCM_U24BE:
3407 case AV_CODEC_ID_PCM_U24LE:
3408 return 24;
3409 case AV_CODEC_ID_PCM_S32BE:
3410 case AV_CODEC_ID_PCM_S32LE:
3411 case AV_CODEC_ID_PCM_S32LE_PLANAR:
3412 case AV_CODEC_ID_PCM_U32BE:
3413 case AV_CODEC_ID_PCM_U32LE:
3414 case AV_CODEC_ID_PCM_F32BE:
3415 case AV_CODEC_ID_PCM_F32LE:
3416 return 32;
3417 case AV_CODEC_ID_PCM_F64BE:
3418 case AV_CODEC_ID_PCM_F64LE:
3419 return 64;
3420 default:
3421 return 0;
3422 }
3423 }
3424
av_get_pcm_codec(enum AVSampleFormat fmt,int be)3425 enum AVCodecID av_get_pcm_codec(enum AVSampleFormat fmt, int be)
3426 {
3427 static const enum AVCodecID map[AV_SAMPLE_FMT_NB][2] = {
3428 [AV_SAMPLE_FMT_U8 ] = { AV_CODEC_ID_PCM_U8, AV_CODEC_ID_PCM_U8 },
3429 [AV_SAMPLE_FMT_S16 ] = { AV_CODEC_ID_PCM_S16LE, AV_CODEC_ID_PCM_S16BE },
3430 [AV_SAMPLE_FMT_S32 ] = { AV_CODEC_ID_PCM_S32LE, AV_CODEC_ID_PCM_S32BE },
3431 [AV_SAMPLE_FMT_FLT ] = { AV_CODEC_ID_PCM_F32LE, AV_CODEC_ID_PCM_F32BE },
3432 [AV_SAMPLE_FMT_DBL ] = { AV_CODEC_ID_PCM_F64LE, AV_CODEC_ID_PCM_F64BE },
3433 [AV_SAMPLE_FMT_U8P ] = { AV_CODEC_ID_PCM_U8, AV_CODEC_ID_PCM_U8 },
3434 [AV_SAMPLE_FMT_S16P] = { AV_CODEC_ID_PCM_S16LE, AV_CODEC_ID_PCM_S16BE },
3435 [AV_SAMPLE_FMT_S32P] = { AV_CODEC_ID_PCM_S32LE, AV_CODEC_ID_PCM_S32BE },
3436 [AV_SAMPLE_FMT_FLTP] = { AV_CODEC_ID_PCM_F32LE, AV_CODEC_ID_PCM_F32BE },
3437 [AV_SAMPLE_FMT_DBLP] = { AV_CODEC_ID_PCM_F64LE, AV_CODEC_ID_PCM_F64BE },
3438 };
3439 if (fmt < 0 || fmt >= AV_SAMPLE_FMT_NB)
3440 return AV_CODEC_ID_NONE;
3441 if (be < 0 || be > 1)
3442 be = AV_NE(1, 0);
3443 return map[fmt][be];
3444 }
3445
av_get_bits_per_sample(enum AVCodecID codec_id)3446 int av_get_bits_per_sample(enum AVCodecID codec_id)
3447 {
3448 switch (codec_id) {
3449 case AV_CODEC_ID_ADPCM_SBPRO_2:
3450 return 2;
3451 case AV_CODEC_ID_ADPCM_SBPRO_3:
3452 return 3;
3453 case AV_CODEC_ID_ADPCM_SBPRO_4:
3454 case AV_CODEC_ID_ADPCM_IMA_WAV:
3455 case AV_CODEC_ID_ADPCM_IMA_QT:
3456 case AV_CODEC_ID_ADPCM_SWF:
3457 case AV_CODEC_ID_ADPCM_MS:
3458 return 4;
3459 default:
3460 return av_get_exact_bits_per_sample(codec_id);
3461 }
3462 }
3463
get_audio_frame_duration(enum AVCodecID id,int sr,int ch,int ba,uint32_t tag,int bits_per_coded_sample,int64_t bitrate,uint8_t * extradata,int frame_size,int frame_bytes)3464 static int get_audio_frame_duration(enum AVCodecID id, int sr, int ch, int ba,
3465 uint32_t tag, int bits_per_coded_sample, int64_t bitrate,
3466 uint8_t * extradata, int frame_size, int frame_bytes)
3467 {
3468 int bps = av_get_exact_bits_per_sample(id);
3469 int framecount = (ba > 0 && frame_bytes / ba > 0) ? frame_bytes / ba : 1;
3470
3471 /* codecs with an exact constant bits per sample */
3472 if (bps > 0 && ch > 0 && frame_bytes > 0 && ch < 32768 && bps < 32768)
3473 return (frame_bytes * 8LL) / (bps * ch);
3474 bps = bits_per_coded_sample;
3475
3476 /* codecs with a fixed packet duration */
3477 switch (id) {
3478 case AV_CODEC_ID_ADPCM_ADX: return 32;
3479 case AV_CODEC_ID_ADPCM_IMA_QT: return 64;
3480 case AV_CODEC_ID_ADPCM_EA_XAS: return 128;
3481 case AV_CODEC_ID_AMR_NB:
3482 case AV_CODEC_ID_EVRC:
3483 case AV_CODEC_ID_GSM:
3484 case AV_CODEC_ID_QCELP:
3485 case AV_CODEC_ID_RA_288: return 160;
3486 case AV_CODEC_ID_AMR_WB:
3487 case AV_CODEC_ID_GSM_MS: return 320;
3488 case AV_CODEC_ID_MP1: return 384;
3489 case AV_CODEC_ID_ATRAC1: return 512;
3490 case AV_CODEC_ID_ATRAC3: return 1024 * framecount;
3491 case AV_CODEC_ID_ATRAC3P: return 2048;
3492 case AV_CODEC_ID_MP2:
3493 case AV_CODEC_ID_MUSEPACK7: return 1152;
3494 case AV_CODEC_ID_AC3: return 1536;
3495 }
3496
3497 if (sr > 0) {
3498 /* calc from sample rate */
3499 if (id == AV_CODEC_ID_TTA)
3500 return 256 * sr / 245;
3501 else if (id == AV_CODEC_ID_DST)
3502 return 588 * sr / 44100;
3503
3504 if (ch > 0) {
3505 /* calc from sample rate and channels */
3506 if (id == AV_CODEC_ID_BINKAUDIO_DCT)
3507 return (480 << (sr / 22050)) / ch;
3508 }
3509 }
3510
3511 if (ba > 0) {
3512 /* calc from block_align */
3513 if (id == AV_CODEC_ID_SIPR) {
3514 switch (ba) {
3515 case 20: return 160;
3516 case 19: return 144;
3517 case 29: return 288;
3518 case 37: return 480;
3519 }
3520 } else if (id == AV_CODEC_ID_ILBC) {
3521 switch (ba) {
3522 case 38: return 160;
3523 case 50: return 240;
3524 }
3525 }
3526 }
3527
3528 if (frame_bytes > 0) {
3529 /* calc from frame_bytes only */
3530 if (id == AV_CODEC_ID_TRUESPEECH)
3531 return 240 * (frame_bytes / 32);
3532 if (id == AV_CODEC_ID_NELLYMOSER)
3533 return 256 * (frame_bytes / 64);
3534 if (id == AV_CODEC_ID_RA_144)
3535 return 160 * (frame_bytes / 20);
3536 if (id == AV_CODEC_ID_G723_1)
3537 return 240 * (frame_bytes / 24);
3538
3539 if (bps > 0) {
3540 /* calc from frame_bytes and bits_per_coded_sample */
3541 if (id == AV_CODEC_ID_ADPCM_G726)
3542 return frame_bytes * 8 / bps;
3543 }
3544
3545 if (ch > 0 && ch < INT_MAX/16) {
3546 /* calc from frame_bytes and channels */
3547 switch (id) {
3548 case AV_CODEC_ID_ADPCM_AFC:
3549 return frame_bytes / (9 * ch) * 16;
3550 case AV_CODEC_ID_ADPCM_PSX:
3551 case AV_CODEC_ID_ADPCM_DTK:
3552 return frame_bytes / (16 * ch) * 28;
3553 case AV_CODEC_ID_ADPCM_4XM:
3554 case AV_CODEC_ID_ADPCM_IMA_DAT4:
3555 case AV_CODEC_ID_ADPCM_IMA_ISS:
3556 return (frame_bytes - 4 * ch) * 2 / ch;
3557 case AV_CODEC_ID_ADPCM_IMA_SMJPEG:
3558 return (frame_bytes - 4) * 2 / ch;
3559 case AV_CODEC_ID_ADPCM_IMA_AMV:
3560 return (frame_bytes - 8) * 2 / ch;
3561 case AV_CODEC_ID_ADPCM_THP:
3562 case AV_CODEC_ID_ADPCM_THP_LE:
3563 if (extradata)
3564 return frame_bytes * 14 / (8 * ch);
3565 break;
3566 case AV_CODEC_ID_ADPCM_XA:
3567 return (frame_bytes / 128) * 224 / ch;
3568 case AV_CODEC_ID_INTERPLAY_DPCM:
3569 return (frame_bytes - 6 - ch) / ch;
3570 case AV_CODEC_ID_ROQ_DPCM:
3571 return (frame_bytes - 8) / ch;
3572 case AV_CODEC_ID_XAN_DPCM:
3573 return (frame_bytes - 2 * ch) / ch;
3574 case AV_CODEC_ID_MACE3:
3575 return 3 * frame_bytes / ch;
3576 case AV_CODEC_ID_MACE6:
3577 return 6 * frame_bytes / ch;
3578 case AV_CODEC_ID_PCM_LXF:
3579 return 2 * (frame_bytes / (5 * ch));
3580 case AV_CODEC_ID_IAC:
3581 case AV_CODEC_ID_IMC:
3582 return 4 * frame_bytes / ch;
3583 }
3584
3585 if (tag) {
3586 /* calc from frame_bytes, channels, and codec_tag */
3587 if (id == AV_CODEC_ID_SOL_DPCM) {
3588 if (tag == 3)
3589 return frame_bytes / ch;
3590 else
3591 return frame_bytes * 2 / ch;
3592 }
3593 }
3594
3595 if (ba > 0) {
3596 /* calc from frame_bytes, channels, and block_align */
3597 int blocks = frame_bytes / ba;
3598 switch (id) {
3599 case AV_CODEC_ID_ADPCM_IMA_WAV:
3600 if (bps < 2 || bps > 5)
3601 return 0;
3602 return blocks * (1 + (ba - 4 * ch) / (bps * ch) * 8);
3603 case AV_CODEC_ID_ADPCM_IMA_DK3:
3604 return blocks * (((ba - 16) * 2 / 3 * 4) / ch);
3605 case AV_CODEC_ID_ADPCM_IMA_DK4:
3606 return blocks * (1 + (ba - 4 * ch) * 2 / ch);
3607 case AV_CODEC_ID_ADPCM_IMA_RAD:
3608 return blocks * ((ba - 4 * ch) * 2 / ch);
3609 case AV_CODEC_ID_ADPCM_MS:
3610 return blocks * (2 + (ba - 7 * ch) * 2 / ch);
3611 case AV_CODEC_ID_ADPCM_MTAF:
3612 return blocks * (ba - 16) * 2 / ch;
3613 }
3614 }
3615
3616 if (bps > 0) {
3617 /* calc from frame_bytes, channels, and bits_per_coded_sample */
3618 switch (id) {
3619 case AV_CODEC_ID_PCM_DVD:
3620 if(bps<4)
3621 return 0;
3622 return 2 * (frame_bytes / ((bps * 2 / 8) * ch));
3623 case AV_CODEC_ID_PCM_BLURAY:
3624 if(bps<4)
3625 return 0;
3626 return frame_bytes / ((FFALIGN(ch, 2) * bps) / 8);
3627 case AV_CODEC_ID_S302M:
3628 return 2 * (frame_bytes / ((bps + 4) / 4)) / ch;
3629 }
3630 }
3631 }
3632 }
3633
3634 /* Fall back on using frame_size */
3635 if (frame_size > 1 && frame_bytes)
3636 return frame_size;
3637
3638 //For WMA we currently have no other means to calculate duration thus we
3639 //do it here by assuming CBR, which is true for all known cases.
3640 if (bitrate > 0 && frame_bytes > 0 && sr > 0 && ba > 1) {
3641 if (id == AV_CODEC_ID_WMAV1 || id == AV_CODEC_ID_WMAV2)
3642 return (frame_bytes * 8LL * sr) / bitrate;
3643 }
3644
3645 return 0;
3646 }
3647
av_get_audio_frame_duration(AVCodecContext * avctx,int frame_bytes)3648 int av_get_audio_frame_duration(AVCodecContext *avctx, int frame_bytes)
3649 {
3650 return get_audio_frame_duration(avctx->codec_id, avctx->sample_rate,
3651 avctx->channels, avctx->block_align,
3652 avctx->codec_tag, avctx->bits_per_coded_sample,
3653 avctx->bit_rate, avctx->extradata, avctx->frame_size,
3654 frame_bytes);
3655 }
3656
av_get_audio_frame_duration2(AVCodecParameters * par,int frame_bytes)3657 int av_get_audio_frame_duration2(AVCodecParameters *par, int frame_bytes)
3658 {
3659 return get_audio_frame_duration(par->codec_id, par->sample_rate,
3660 par->channels, par->block_align,
3661 par->codec_tag, par->bits_per_coded_sample,
3662 par->bit_rate, par->extradata, par->frame_size,
3663 frame_bytes);
3664 }
3665
3666 #if !HAVE_THREADS
ff_thread_init(AVCodecContext * s)3667 int ff_thread_init(AVCodecContext *s)
3668 {
3669 return -1;
3670 }
3671
3672 #endif
3673
av_xiphlacing(unsigned char * s,unsigned int v)3674 unsigned int av_xiphlacing(unsigned char *s, unsigned int v)
3675 {
3676 unsigned int n = 0;
3677
3678 while (v >= 0xff) {
3679 *s++ = 0xff;
3680 v -= 0xff;
3681 n++;
3682 }
3683 *s = v;
3684 n++;
3685 return n;
3686 }
3687
ff_match_2uint16(const uint16_t (* tab)[2],int size,int a,int b)3688 int ff_match_2uint16(const uint16_t(*tab)[2], int size, int a, int b)
3689 {
3690 int i;
3691 for (i = 0; i < size && !(tab[i][0] == a && tab[i][1] == b); i++) ;
3692 return i;
3693 }
3694
3695 #if FF_API_MISSING_SAMPLE
3696 FF_DISABLE_DEPRECATION_WARNINGS
av_log_missing_feature(void * avc,const char * feature,int want_sample)3697 void av_log_missing_feature(void *avc, const char *feature, int want_sample)
3698 {
3699 av_log(avc, AV_LOG_WARNING, "%s is not implemented. Update your FFmpeg "
3700 "version to the newest one from Git. If the problem still "
3701 "occurs, it means that your file has a feature which has not "
3702 "been implemented.\n", feature);
3703 if(want_sample)
3704 av_log_ask_for_sample(avc, NULL);
3705 }
3706
av_log_ask_for_sample(void * avc,const char * msg,...)3707 void av_log_ask_for_sample(void *avc, const char *msg, ...)
3708 {
3709 va_list argument_list;
3710
3711 va_start(argument_list, msg);
3712
3713 if (msg)
3714 av_vlog(avc, AV_LOG_WARNING, msg, argument_list);
3715 av_log(avc, AV_LOG_WARNING, "If you want to help, upload a sample "
3716 "of this file to ftp://upload.ffmpeg.org/incoming/ "
3717 "and contact the ffmpeg-devel mailing list. (ffmpeg-devel@ffmpeg.org)\n");
3718
3719 va_end(argument_list);
3720 }
3721 FF_ENABLE_DEPRECATION_WARNINGS
3722 #endif /* FF_API_MISSING_SAMPLE */
3723
3724 static AVHWAccel *first_hwaccel = NULL;
3725 static AVHWAccel **last_hwaccel = &first_hwaccel;
3726
av_register_hwaccel(AVHWAccel * hwaccel)3727 void av_register_hwaccel(AVHWAccel *hwaccel)
3728 {
3729 AVHWAccel **p = last_hwaccel;
3730 hwaccel->next = NULL;
3731 while(*p || avpriv_atomic_ptr_cas((void * volatile *)p, NULL, hwaccel))
3732 p = &(*p)->next;
3733 last_hwaccel = &hwaccel->next;
3734 }
3735
av_hwaccel_next(const AVHWAccel * hwaccel)3736 AVHWAccel *av_hwaccel_next(const AVHWAccel *hwaccel)
3737 {
3738 return hwaccel ? hwaccel->next : first_hwaccel;
3739 }
3740
av_lockmgr_register(int (* cb)(void ** mutex,enum AVLockOp op))3741 int av_lockmgr_register(int (*cb)(void **mutex, enum AVLockOp op))
3742 {
3743 if (lockmgr_cb) {
3744 // There is no good way to rollback a failure to destroy the
3745 // mutex, so we ignore failures.
3746 lockmgr_cb(&codec_mutex, AV_LOCK_DESTROY);
3747 lockmgr_cb(&avformat_mutex, AV_LOCK_DESTROY);
3748 lockmgr_cb = NULL;
3749 codec_mutex = NULL;
3750 avformat_mutex = NULL;
3751 }
3752
3753 if (cb) {
3754 void *new_codec_mutex = NULL;
3755 void *new_avformat_mutex = NULL;
3756 int err;
3757 if (err = cb(&new_codec_mutex, AV_LOCK_CREATE)) {
3758 return err > 0 ? AVERROR_UNKNOWN : err;
3759 }
3760 if (err = cb(&new_avformat_mutex, AV_LOCK_CREATE)) {
3761 // Ignore failures to destroy the newly created mutex.
3762 cb(&new_codec_mutex, AV_LOCK_DESTROY);
3763 return err > 0 ? AVERROR_UNKNOWN : err;
3764 }
3765 lockmgr_cb = cb;
3766 codec_mutex = new_codec_mutex;
3767 avformat_mutex = new_avformat_mutex;
3768 }
3769
3770 return 0;
3771 }
3772
ff_lock_avcodec(AVCodecContext * log_ctx,const AVCodec * codec)3773 int ff_lock_avcodec(AVCodecContext *log_ctx, const AVCodec *codec)
3774 {
3775 if (codec->caps_internal & FF_CODEC_CAP_INIT_THREADSAFE || !codec->init)
3776 return 0;
3777
3778 if (lockmgr_cb) {
3779 if ((*lockmgr_cb)(&codec_mutex, AV_LOCK_OBTAIN))
3780 return -1;
3781 }
3782
3783 if (avpriv_atomic_int_add_and_fetch(&entangled_thread_counter, 1) != 1) {
3784 av_log(log_ctx, AV_LOG_ERROR,
3785 "Insufficient thread locking. At least %d threads are "
3786 "calling avcodec_open2() at the same time right now.\n",
3787 entangled_thread_counter);
3788 if (!lockmgr_cb)
3789 av_log(log_ctx, AV_LOG_ERROR, "No lock manager is set, please see av_lockmgr_register()\n");
3790 ff_avcodec_locked = 1;
3791 ff_unlock_avcodec(codec);
3792 return AVERROR(EINVAL);
3793 }
3794 av_assert0(!ff_avcodec_locked);
3795 ff_avcodec_locked = 1;
3796 return 0;
3797 }
3798
ff_unlock_avcodec(const AVCodec * codec)3799 int ff_unlock_avcodec(const AVCodec *codec)
3800 {
3801 if (codec->caps_internal & FF_CODEC_CAP_INIT_THREADSAFE || !codec->init)
3802 return 0;
3803
3804 av_assert0(ff_avcodec_locked);
3805 ff_avcodec_locked = 0;
3806 avpriv_atomic_int_add_and_fetch(&entangled_thread_counter, -1);
3807 if (lockmgr_cb) {
3808 if ((*lockmgr_cb)(&codec_mutex, AV_LOCK_RELEASE))
3809 return -1;
3810 }
3811
3812 return 0;
3813 }
3814
avpriv_lock_avformat(void)3815 int avpriv_lock_avformat(void)
3816 {
3817 if (lockmgr_cb) {
3818 if ((*lockmgr_cb)(&avformat_mutex, AV_LOCK_OBTAIN))
3819 return -1;
3820 }
3821 return 0;
3822 }
3823
avpriv_unlock_avformat(void)3824 int avpriv_unlock_avformat(void)
3825 {
3826 if (lockmgr_cb) {
3827 if ((*lockmgr_cb)(&avformat_mutex, AV_LOCK_RELEASE))
3828 return -1;
3829 }
3830 return 0;
3831 }
3832
avpriv_toupper4(unsigned int x)3833 unsigned int avpriv_toupper4(unsigned int x)
3834 {
3835 return av_toupper(x & 0xFF) +
3836 (av_toupper((x >> 8) & 0xFF) << 8) +
3837 (av_toupper((x >> 16) & 0xFF) << 16) +
3838 ((unsigned)av_toupper((x >> 24) & 0xFF) << 24);
3839 }
3840
ff_thread_ref_frame(ThreadFrame * dst,ThreadFrame * src)3841 int ff_thread_ref_frame(ThreadFrame *dst, ThreadFrame *src)
3842 {
3843 int ret;
3844
3845 dst->owner = src->owner;
3846
3847 ret = av_frame_ref(dst->f, src->f);
3848 if (ret < 0)
3849 return ret;
3850
3851 av_assert0(!dst->progress);
3852
3853 if (src->progress &&
3854 !(dst->progress = av_buffer_ref(src->progress))) {
3855 ff_thread_release_buffer(dst->owner, dst);
3856 return AVERROR(ENOMEM);
3857 }
3858
3859 return 0;
3860 }
3861
3862 #if !HAVE_THREADS
3863
ff_thread_get_format(AVCodecContext * avctx,const enum AVPixelFormat * fmt)3864 enum AVPixelFormat ff_thread_get_format(AVCodecContext *avctx, const enum AVPixelFormat *fmt)
3865 {
3866 return ff_get_format(avctx, fmt);
3867 }
3868
ff_thread_get_buffer(AVCodecContext * avctx,ThreadFrame * f,int flags)3869 int ff_thread_get_buffer(AVCodecContext *avctx, ThreadFrame *f, int flags)
3870 {
3871 f->owner = avctx;
3872 return ff_get_buffer(avctx, f->f, flags);
3873 }
3874
ff_thread_release_buffer(AVCodecContext * avctx,ThreadFrame * f)3875 void ff_thread_release_buffer(AVCodecContext *avctx, ThreadFrame *f)
3876 {
3877 if (f->f)
3878 av_frame_unref(f->f);
3879 }
3880
ff_thread_finish_setup(AVCodecContext * avctx)3881 void ff_thread_finish_setup(AVCodecContext *avctx)
3882 {
3883 }
3884
ff_thread_report_progress(ThreadFrame * f,int progress,int field)3885 void ff_thread_report_progress(ThreadFrame *f, int progress, int field)
3886 {
3887 }
3888
ff_thread_await_progress(ThreadFrame * f,int progress,int field)3889 void ff_thread_await_progress(ThreadFrame *f, int progress, int field)
3890 {
3891 }
3892
ff_thread_can_start_frame(AVCodecContext * avctx)3893 int ff_thread_can_start_frame(AVCodecContext *avctx)
3894 {
3895 return 1;
3896 }
3897
ff_alloc_entries(AVCodecContext * avctx,int count)3898 int ff_alloc_entries(AVCodecContext *avctx, int count)
3899 {
3900 return 0;
3901 }
3902
ff_reset_entries(AVCodecContext * avctx)3903 void ff_reset_entries(AVCodecContext *avctx)
3904 {
3905 }
3906
ff_thread_await_progress2(AVCodecContext * avctx,int field,int thread,int shift)3907 void ff_thread_await_progress2(AVCodecContext *avctx, int field, int thread, int shift)
3908 {
3909 }
3910
ff_thread_report_progress2(AVCodecContext * avctx,int field,int thread,int n)3911 void ff_thread_report_progress2(AVCodecContext *avctx, int field, int thread, int n)
3912 {
3913 }
3914
3915 #endif
3916
avcodec_is_open(AVCodecContext * s)3917 int avcodec_is_open(AVCodecContext *s)
3918 {
3919 return !!s->internal;
3920 }
3921
avpriv_bprint_to_extradata(AVCodecContext * avctx,struct AVBPrint * buf)3922 int avpriv_bprint_to_extradata(AVCodecContext *avctx, struct AVBPrint *buf)
3923 {
3924 int ret;
3925 char *str;
3926
3927 ret = av_bprint_finalize(buf, &str);
3928 if (ret < 0)
3929 return ret;
3930 if (!av_bprint_is_complete(buf)) {
3931 av_free(str);
3932 return AVERROR(ENOMEM);
3933 }
3934
3935 avctx->extradata = str;
3936 /* Note: the string is NUL terminated (so extradata can be read as a
3937 * string), but the ending character is not accounted in the size (in
3938 * binary formats you are likely not supposed to mux that character). When
3939 * extradata is copied, it is also padded with AV_INPUT_BUFFER_PADDING_SIZE
3940 * zeros. */
3941 avctx->extradata_size = buf->len;
3942 return 0;
3943 }
3944
avpriv_find_start_code(const uint8_t * av_restrict p,const uint8_t * end,uint32_t * av_restrict state)3945 const uint8_t *avpriv_find_start_code(const uint8_t *av_restrict p,
3946 const uint8_t *end,
3947 uint32_t *av_restrict state)
3948 {
3949 int i;
3950
3951 av_assert0(p <= end);
3952 if (p >= end)
3953 return end;
3954
3955 for (i = 0; i < 3; i++) {
3956 uint32_t tmp = *state << 8;
3957 *state = tmp + *(p++);
3958 if (tmp == 0x100 || p == end)
3959 return p;
3960 }
3961
3962 while (p < end) {
3963 if (p[-1] > 1 ) p += 3;
3964 else if (p[-2] ) p += 2;
3965 else if (p[-3]|(p[-1]-1)) p++;
3966 else {
3967 p++;
3968 break;
3969 }
3970 }
3971
3972 p = FFMIN(p, end) - 4;
3973 *state = AV_RB32(p);
3974
3975 return p + 4;
3976 }
3977
av_cpb_properties_alloc(size_t * size)3978 AVCPBProperties *av_cpb_properties_alloc(size_t *size)
3979 {
3980 AVCPBProperties *props = av_mallocz(sizeof(AVCPBProperties));
3981 if (!props)
3982 return NULL;
3983
3984 if (size)
3985 *size = sizeof(*props);
3986
3987 props->vbv_delay = UINT64_MAX;
3988
3989 return props;
3990 }
3991
ff_add_cpb_side_data(AVCodecContext * avctx)3992 AVCPBProperties *ff_add_cpb_side_data(AVCodecContext *avctx)
3993 {
3994 AVPacketSideData *tmp;
3995 AVCPBProperties *props;
3996 size_t size;
3997
3998 props = av_cpb_properties_alloc(&size);
3999 if (!props)
4000 return NULL;
4001
4002 tmp = av_realloc_array(avctx->coded_side_data, avctx->nb_coded_side_data + 1, sizeof(*tmp));
4003 if (!tmp) {
4004 av_freep(&props);
4005 return NULL;
4006 }
4007
4008 avctx->coded_side_data = tmp;
4009 avctx->nb_coded_side_data++;
4010
4011 avctx->coded_side_data[avctx->nb_coded_side_data - 1].type = AV_PKT_DATA_CPB_PROPERTIES;
4012 avctx->coded_side_data[avctx->nb_coded_side_data - 1].data = (uint8_t*)props;
4013 avctx->coded_side_data[avctx->nb_coded_side_data - 1].size = size;
4014
4015 return props;
4016 }
4017
codec_parameters_reset(AVCodecParameters * par)4018 static void codec_parameters_reset(AVCodecParameters *par)
4019 {
4020 av_freep(&par->extradata);
4021
4022 memset(par, 0, sizeof(*par));
4023
4024 par->codec_type = AVMEDIA_TYPE_UNKNOWN;
4025 par->codec_id = AV_CODEC_ID_NONE;
4026 par->format = -1;
4027 par->field_order = AV_FIELD_UNKNOWN;
4028 par->color_range = AVCOL_RANGE_UNSPECIFIED;
4029 par->color_primaries = AVCOL_PRI_UNSPECIFIED;
4030 par->color_trc = AVCOL_TRC_UNSPECIFIED;
4031 par->color_space = AVCOL_SPC_UNSPECIFIED;
4032 par->chroma_location = AVCHROMA_LOC_UNSPECIFIED;
4033 par->sample_aspect_ratio = (AVRational){ 0, 1 };
4034 par->profile = FF_PROFILE_UNKNOWN;
4035 par->level = FF_LEVEL_UNKNOWN;
4036 }
4037
avcodec_parameters_alloc(void)4038 AVCodecParameters *avcodec_parameters_alloc(void)
4039 {
4040 AVCodecParameters *par = av_mallocz(sizeof(*par));
4041
4042 if (!par)
4043 return NULL;
4044 codec_parameters_reset(par);
4045 return par;
4046 }
4047
avcodec_parameters_free(AVCodecParameters ** ppar)4048 void avcodec_parameters_free(AVCodecParameters **ppar)
4049 {
4050 AVCodecParameters *par = *ppar;
4051
4052 if (!par)
4053 return;
4054 codec_parameters_reset(par);
4055
4056 av_freep(ppar);
4057 }
4058
avcodec_parameters_copy(AVCodecParameters * dst,const AVCodecParameters * src)4059 int avcodec_parameters_copy(AVCodecParameters *dst, const AVCodecParameters *src)
4060 {
4061 codec_parameters_reset(dst);
4062 memcpy(dst, src, sizeof(*dst));
4063
4064 dst->extradata = NULL;
4065 dst->extradata_size = 0;
4066 if (src->extradata) {
4067 dst->extradata = av_mallocz(src->extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);
4068 if (!dst->extradata)
4069 return AVERROR(ENOMEM);
4070 memcpy(dst->extradata, src->extradata, src->extradata_size);
4071 dst->extradata_size = src->extradata_size;
4072 }
4073
4074 return 0;
4075 }
4076
avcodec_parameters_from_context(AVCodecParameters * par,const AVCodecContext * codec)4077 int avcodec_parameters_from_context(AVCodecParameters *par,
4078 const AVCodecContext *codec)
4079 {
4080 codec_parameters_reset(par);
4081
4082 par->codec_type = codec->codec_type;
4083 par->codec_id = codec->codec_id;
4084 par->codec_tag = codec->codec_tag;
4085
4086 par->bit_rate = codec->bit_rate;
4087 par->bits_per_coded_sample = codec->bits_per_coded_sample;
4088 par->bits_per_raw_sample = codec->bits_per_raw_sample;
4089 par->profile = codec->profile;
4090 par->level = codec->level;
4091
4092 switch (par->codec_type) {
4093 case AVMEDIA_TYPE_VIDEO:
4094 par->format = codec->pix_fmt;
4095 par->width = codec->width;
4096 par->height = codec->height;
4097 par->field_order = codec->field_order;
4098 par->color_range = codec->color_range;
4099 par->color_primaries = codec->color_primaries;
4100 par->color_trc = codec->color_trc;
4101 par->color_space = codec->colorspace;
4102 par->chroma_location = codec->chroma_sample_location;
4103 par->sample_aspect_ratio = codec->sample_aspect_ratio;
4104 par->video_delay = codec->has_b_frames;
4105 break;
4106 case AVMEDIA_TYPE_AUDIO:
4107 par->format = codec->sample_fmt;
4108 par->channel_layout = codec->channel_layout;
4109 par->channels = codec->channels;
4110 par->sample_rate = codec->sample_rate;
4111 par->block_align = codec->block_align;
4112 par->frame_size = codec->frame_size;
4113 par->initial_padding = codec->initial_padding;
4114 par->seek_preroll = codec->seek_preroll;
4115 break;
4116 case AVMEDIA_TYPE_SUBTITLE:
4117 par->width = codec->width;
4118 par->height = codec->height;
4119 break;
4120 }
4121
4122 if (codec->extradata) {
4123 par->extradata = av_mallocz(codec->extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);
4124 if (!par->extradata)
4125 return AVERROR(ENOMEM);
4126 memcpy(par->extradata, codec->extradata, codec->extradata_size);
4127 par->extradata_size = codec->extradata_size;
4128 }
4129
4130 return 0;
4131 }
4132
avcodec_parameters_to_context(AVCodecContext * codec,const AVCodecParameters * par)4133 int avcodec_parameters_to_context(AVCodecContext *codec,
4134 const AVCodecParameters *par)
4135 {
4136 codec->codec_type = par->codec_type;
4137 codec->codec_id = par->codec_id;
4138 codec->codec_tag = par->codec_tag;
4139
4140 codec->bit_rate = par->bit_rate;
4141 codec->bits_per_coded_sample = par->bits_per_coded_sample;
4142 codec->bits_per_raw_sample = par->bits_per_raw_sample;
4143 codec->profile = par->profile;
4144 codec->level = par->level;
4145
4146 switch (par->codec_type) {
4147 case AVMEDIA_TYPE_VIDEO:
4148 codec->pix_fmt = par->format;
4149 codec->width = par->width;
4150 codec->height = par->height;
4151 codec->field_order = par->field_order;
4152 codec->color_range = par->color_range;
4153 codec->color_primaries = par->color_primaries;
4154 codec->color_trc = par->color_trc;
4155 codec->colorspace = par->color_space;
4156 codec->chroma_sample_location = par->chroma_location;
4157 codec->sample_aspect_ratio = par->sample_aspect_ratio;
4158 codec->has_b_frames = par->video_delay;
4159 break;
4160 case AVMEDIA_TYPE_AUDIO:
4161 codec->sample_fmt = par->format;
4162 codec->channel_layout = par->channel_layout;
4163 codec->channels = par->channels;
4164 codec->sample_rate = par->sample_rate;
4165 codec->block_align = par->block_align;
4166 codec->frame_size = par->frame_size;
4167 codec->delay =
4168 codec->initial_padding = par->initial_padding;
4169 codec->seek_preroll = par->seek_preroll;
4170 break;
4171 case AVMEDIA_TYPE_SUBTITLE:
4172 codec->width = par->width;
4173 codec->height = par->height;
4174 break;
4175 }
4176
4177 if (par->extradata) {
4178 av_freep(&codec->extradata);
4179 codec->extradata = av_mallocz(par->extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);
4180 if (!codec->extradata)
4181 return AVERROR(ENOMEM);
4182 memcpy(codec->extradata, par->extradata, par->extradata_size);
4183 codec->extradata_size = par->extradata_size;
4184 }
4185
4186 return 0;
4187 }
4188
ff_alloc_a53_sei(const AVFrame * frame,size_t prefix_len,void ** data,size_t * sei_size)4189 int ff_alloc_a53_sei(const AVFrame *frame, size_t prefix_len,
4190 void **data, size_t *sei_size)
4191 {
4192 AVFrameSideData *side_data = NULL;
4193 uint8_t *sei_data;
4194
4195 if (frame)
4196 side_data = av_frame_get_side_data(frame, AV_FRAME_DATA_A53_CC);
4197
4198 if (!side_data) {
4199 *data = NULL;
4200 return 0;
4201 }
4202
4203 *sei_size = side_data->size + 11;
4204 *data = av_mallocz(*sei_size + prefix_len);
4205 if (!*data)
4206 return AVERROR(ENOMEM);
4207 sei_data = (uint8_t*)*data + prefix_len;
4208
4209 // country code
4210 sei_data[0] = 181;
4211 sei_data[1] = 0;
4212 sei_data[2] = 49;
4213
4214 /**
4215 * 'GA94' is standard in North America for ATSC, but hard coding
4216 * this style may not be the right thing to do -- other formats
4217 * do exist. This information is not available in the side_data
4218 * so we are going with this right now.
4219 */
4220 AV_WL32(sei_data + 3, MKTAG('G', 'A', '9', '4'));
4221 sei_data[7] = 3;
4222 sei_data[8] = ((side_data->size/3) & 0x1f) | 0x40;
4223 sei_data[9] = 0;
4224
4225 memcpy(sei_data + 10, side_data->data, side_data->size);
4226
4227 sei_data[side_data->size+10] = 255;
4228
4229 return 0;
4230 }
4231