pcm: support 24-bit/32-bit little-endian planar
[libav.git] / libavcodec / utils.c
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 Libav.
7 *
8 * Libav 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 * Libav 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 Libav; 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/attributes.h"
30 #include "libavutil/avassert.h"
31 #include "libavutil/avstring.h"
32 #include "libavutil/channel_layout.h"
33 #include "libavutil/crc.h"
34 #include "libavutil/frame.h"
35 #include "libavutil/internal.h"
36 #include "libavutil/mathematics.h"
37 #include "libavutil/pixdesc.h"
38 #include "libavutil/imgutils.h"
39 #include "libavutil/samplefmt.h"
40 #include "libavutil/dict.h"
41 #include "avcodec.h"
42 #include "dsputil.h"
43 #include "libavutil/opt.h"
44 #include "thread.h"
45 #include "internal.h"
46 #include "bytestream.h"
47 #include "version.h"
48 #include <stdlib.h>
49 #include <stdarg.h>
50 #include <limits.h>
51 #include <float.h>
52
53 static int volatile entangled_thread_counter = 0;
54 static int (*lockmgr_cb)(void **mutex, enum AVLockOp op);
55 static void *codec_mutex;
56 static void *avformat_mutex;
57
58 void *av_fast_realloc(void *ptr, unsigned int *size, size_t min_size)
59 {
60 if (min_size < *size)
61 return ptr;
62
63 min_size = FFMAX(17 * min_size / 16 + 32, min_size);
64
65 ptr = av_realloc(ptr, min_size);
66 /* we could set this to the unmodified min_size but this is safer
67 * if the user lost the ptr and uses NULL now
68 */
69 if (!ptr)
70 min_size = 0;
71
72 *size = min_size;
73
74 return ptr;
75 }
76
77 void av_fast_malloc(void *ptr, unsigned int *size, size_t min_size)
78 {
79 void **p = ptr;
80 if (min_size < *size)
81 return;
82 min_size = FFMAX(17 * min_size / 16 + 32, min_size);
83 av_free(*p);
84 *p = av_malloc(min_size);
85 if (!*p)
86 min_size = 0;
87 *size = min_size;
88 }
89
90 void av_fast_padded_malloc(void *ptr, unsigned int *size, size_t min_size)
91 {
92 void **p = ptr;
93 if (min_size > SIZE_MAX - FF_INPUT_BUFFER_PADDING_SIZE) {
94 av_freep(p);
95 *size = 0;
96 return;
97 }
98 av_fast_malloc(p, size, min_size + FF_INPUT_BUFFER_PADDING_SIZE);
99 if (*size)
100 memset((uint8_t *)*p + min_size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
101 }
102
103 /* encoder management */
104 static AVCodec *first_avcodec = NULL;
105
106 AVCodec *av_codec_next(const AVCodec *c)
107 {
108 if (c)
109 return c->next;
110 else
111 return first_avcodec;
112 }
113
114 static av_cold void avcodec_init(void)
115 {
116 static int initialized = 0;
117
118 if (initialized != 0)
119 return;
120 initialized = 1;
121
122 if (CONFIG_DSPUTIL)
123 ff_dsputil_static_init();
124 }
125
126 int av_codec_is_encoder(const AVCodec *codec)
127 {
128 return codec && (codec->encode_sub || codec->encode2);
129 }
130
131 int av_codec_is_decoder(const AVCodec *codec)
132 {
133 return codec && codec->decode;
134 }
135
136 av_cold void avcodec_register(AVCodec *codec)
137 {
138 AVCodec **p;
139 avcodec_init();
140 p = &first_avcodec;
141 while (*p != NULL)
142 p = &(*p)->next;
143 *p = codec;
144 codec->next = NULL;
145
146 if (codec->init_static_data)
147 codec->init_static_data(codec);
148 }
149
150 unsigned avcodec_get_edge_width(void)
151 {
152 return EDGE_WIDTH;
153 }
154
155 void avcodec_set_dimensions(AVCodecContext *s, int width, int height)
156 {
157 s->coded_width = width;
158 s->coded_height = height;
159 s->width = width;
160 s->height = height;
161 }
162
163 #if HAVE_NEON || ARCH_PPC || HAVE_MMX
164 # define STRIDE_ALIGN 16
165 #else
166 # define STRIDE_ALIGN 8
167 #endif
168
169 void avcodec_align_dimensions2(AVCodecContext *s, int *width, int *height,
170 int linesize_align[AV_NUM_DATA_POINTERS])
171 {
172 int i;
173 int w_align = 1;
174 int h_align = 1;
175
176 switch (s->pix_fmt) {
177 case AV_PIX_FMT_YUV420P:
178 case AV_PIX_FMT_YUYV422:
179 case AV_PIX_FMT_UYVY422:
180 case AV_PIX_FMT_YUV422P:
181 case AV_PIX_FMT_YUV440P:
182 case AV_PIX_FMT_YUV444P:
183 case AV_PIX_FMT_GBRP:
184 case AV_PIX_FMT_GRAY8:
185 case AV_PIX_FMT_GRAY16BE:
186 case AV_PIX_FMT_GRAY16LE:
187 case AV_PIX_FMT_YUVJ420P:
188 case AV_PIX_FMT_YUVJ422P:
189 case AV_PIX_FMT_YUVJ440P:
190 case AV_PIX_FMT_YUVJ444P:
191 case AV_PIX_FMT_YUVA420P:
192 case AV_PIX_FMT_YUVA422P:
193 case AV_PIX_FMT_YUVA444P:
194 case AV_PIX_FMT_YUV420P9LE:
195 case AV_PIX_FMT_YUV420P9BE:
196 case AV_PIX_FMT_YUV420P10LE:
197 case AV_PIX_FMT_YUV420P10BE:
198 case AV_PIX_FMT_YUV422P9LE:
199 case AV_PIX_FMT_YUV422P9BE:
200 case AV_PIX_FMT_YUV422P10LE:
201 case AV_PIX_FMT_YUV422P10BE:
202 case AV_PIX_FMT_YUV444P9LE:
203 case AV_PIX_FMT_YUV444P9BE:
204 case AV_PIX_FMT_YUV444P10LE:
205 case AV_PIX_FMT_YUV444P10BE:
206 case AV_PIX_FMT_GBRP9LE:
207 case AV_PIX_FMT_GBRP9BE:
208 case AV_PIX_FMT_GBRP10LE:
209 case AV_PIX_FMT_GBRP10BE:
210 w_align = 16; //FIXME assume 16 pixel per macroblock
211 h_align = 16 * 2; // interlaced needs 2 macroblocks height
212 break;
213 case AV_PIX_FMT_YUV411P:
214 case AV_PIX_FMT_UYYVYY411:
215 w_align = 32;
216 h_align = 8;
217 break;
218 case AV_PIX_FMT_YUV410P:
219 if (s->codec_id == AV_CODEC_ID_SVQ1) {
220 w_align = 64;
221 h_align = 64;
222 }
223 case AV_PIX_FMT_RGB555:
224 if (s->codec_id == AV_CODEC_ID_RPZA) {
225 w_align = 4;
226 h_align = 4;
227 }
228 case AV_PIX_FMT_PAL8:
229 case AV_PIX_FMT_BGR8:
230 case AV_PIX_FMT_RGB8:
231 if (s->codec_id == AV_CODEC_ID_SMC) {
232 w_align = 4;
233 h_align = 4;
234 }
235 break;
236 case AV_PIX_FMT_BGR24:
237 if ((s->codec_id == AV_CODEC_ID_MSZH) ||
238 (s->codec_id == AV_CODEC_ID_ZLIB)) {
239 w_align = 4;
240 h_align = 4;
241 }
242 break;
243 default:
244 w_align = 1;
245 h_align = 1;
246 break;
247 }
248
249 *width = FFALIGN(*width, w_align);
250 *height = FFALIGN(*height, h_align);
251 if (s->codec_id == AV_CODEC_ID_H264)
252 // some of the optimized chroma MC reads one line too much
253 *height += 2;
254
255 for (i = 0; i < 4; i++)
256 linesize_align[i] = STRIDE_ALIGN;
257 }
258
259 void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height)
260 {
261 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(s->pix_fmt);
262 int chroma_shift = desc->log2_chroma_w;
263 int linesize_align[AV_NUM_DATA_POINTERS];
264 int align;
265
266 avcodec_align_dimensions2(s, width, height, linesize_align);
267 align = FFMAX(linesize_align[0], linesize_align[3]);
268 linesize_align[1] <<= chroma_shift;
269 linesize_align[2] <<= chroma_shift;
270 align = FFMAX3(align, linesize_align[1], linesize_align[2]);
271 *width = FFALIGN(*width, align);
272 }
273
274 int avcodec_fill_audio_frame(AVFrame *frame, int nb_channels,
275 enum AVSampleFormat sample_fmt, const uint8_t *buf,
276 int buf_size, int align)
277 {
278 int ch, planar, needed_size, ret = 0;
279
280 needed_size = av_samples_get_buffer_size(NULL, nb_channels,
281 frame->nb_samples, sample_fmt,
282 align);
283 if (buf_size < needed_size)
284 return AVERROR(EINVAL);
285
286 planar = av_sample_fmt_is_planar(sample_fmt);
287 if (planar && nb_channels > AV_NUM_DATA_POINTERS) {
288 if (!(frame->extended_data = av_mallocz(nb_channels *
289 sizeof(*frame->extended_data))))
290 return AVERROR(ENOMEM);
291 } else {
292 frame->extended_data = frame->data;
293 }
294
295 if ((ret = av_samples_fill_arrays(frame->extended_data, &frame->linesize[0],
296 buf, nb_channels, frame->nb_samples,
297 sample_fmt, align)) < 0) {
298 if (frame->extended_data != frame->data)
299 av_free(frame->extended_data);
300 return ret;
301 }
302 if (frame->extended_data != frame->data) {
303 for (ch = 0; ch < AV_NUM_DATA_POINTERS; ch++)
304 frame->data[ch] = frame->extended_data[ch];
305 }
306
307 return ret;
308 }
309
310 static int update_frame_pool(AVCodecContext *avctx, AVFrame *frame)
311 {
312 FramePool *pool = avctx->internal->pool;
313 int i, ret;
314
315 switch (avctx->codec_type) {
316 case AVMEDIA_TYPE_VIDEO: {
317 AVPicture picture;
318 int size[4] = { 0 };
319 int w = frame->width;
320 int h = frame->height;
321 int tmpsize, unaligned;
322
323 if (pool->format == frame->format &&
324 pool->width == frame->width && pool->height == frame->height)
325 return 0;
326
327 avcodec_align_dimensions2(avctx, &w, &h, pool->stride_align);
328
329 if (!(avctx->flags & CODEC_FLAG_EMU_EDGE)) {
330 w += EDGE_WIDTH * 2;
331 h += EDGE_WIDTH * 2;
332 }
333
334 do {
335 // NOTE: do not align linesizes individually, this breaks e.g. assumptions
336 // that linesize[0] == 2*linesize[1] in the MPEG-encoder for 4:2:2
337 av_image_fill_linesizes(picture.linesize, avctx->pix_fmt, w);
338 // increase alignment of w for next try (rhs gives the lowest bit set in w)
339 w += w & ~(w - 1);
340
341 unaligned = 0;
342 for (i = 0; i < 4; i++)
343 unaligned |= picture.linesize[i] % pool->stride_align[i];
344 } while (unaligned);
345
346 tmpsize = av_image_fill_pointers(picture.data, avctx->pix_fmt, h,
347 NULL, picture.linesize);
348 if (tmpsize < 0)
349 return -1;
350
351 for (i = 0; i < 3 && picture.data[i + 1]; i++)
352 size[i] = picture.data[i + 1] - picture.data[i];
353 size[i] = tmpsize - (picture.data[i] - picture.data[0]);
354
355 for (i = 0; i < 4; i++) {
356 av_buffer_pool_uninit(&pool->pools[i]);
357 pool->linesize[i] = picture.linesize[i];
358 if (size[i]) {
359 pool->pools[i] = av_buffer_pool_init(size[i] + 16, NULL);
360 if (!pool->pools[i]) {
361 ret = AVERROR(ENOMEM);
362 goto fail;
363 }
364 }
365 }
366 pool->format = frame->format;
367 pool->width = frame->width;
368 pool->height = frame->height;
369
370 break;
371 }
372 case AVMEDIA_TYPE_AUDIO: {
373 int ch = av_get_channel_layout_nb_channels(frame->channel_layout);
374 int planar = av_sample_fmt_is_planar(frame->format);
375 int planes = planar ? ch : 1;
376
377 if (pool->format == frame->format && pool->planes == planes &&
378 pool->channels == ch && frame->nb_samples == pool->samples)
379 return 0;
380
381 av_buffer_pool_uninit(&pool->pools[0]);
382 ret = av_samples_get_buffer_size(&pool->linesize[0], ch,
383 frame->nb_samples, frame->format, 0);
384 if (ret < 0)
385 goto fail;
386
387 pool->pools[0] = av_buffer_pool_init(pool->linesize[0], NULL);
388 if (!pool->pools[0]) {
389 ret = AVERROR(ENOMEM);
390 goto fail;
391 }
392
393 pool->format = frame->format;
394 pool->planes = planes;
395 pool->channels = ch;
396 pool->samples = frame->nb_samples;
397 break;
398 }
399 default: av_assert0(0);
400 }
401 return 0;
402 fail:
403 for (i = 0; i < 4; i++)
404 av_buffer_pool_uninit(&pool->pools[i]);
405 pool->format = -1;
406 pool->planes = pool->channels = pool->samples = 0;
407 pool->width = pool->height = 0;
408 return ret;
409 }
410
411 static int audio_get_buffer(AVCodecContext *avctx, AVFrame *frame)
412 {
413 FramePool *pool = avctx->internal->pool;
414 int planes = pool->planes;
415 int i;
416
417 frame->linesize[0] = pool->linesize[0];
418
419 if (planes > AV_NUM_DATA_POINTERS) {
420 frame->extended_data = av_mallocz(planes * sizeof(*frame->extended_data));
421 frame->nb_extended_buf = planes - AV_NUM_DATA_POINTERS;
422 frame->extended_buf = av_mallocz(frame->nb_extended_buf *
423 sizeof(*frame->extended_buf));
424 if (!frame->extended_data || !frame->extended_buf) {
425 av_freep(&frame->extended_data);
426 av_freep(&frame->extended_buf);
427 return AVERROR(ENOMEM);
428 }
429 } else
430 frame->extended_data = frame->data;
431
432 for (i = 0; i < FFMIN(planes, AV_NUM_DATA_POINTERS); i++) {
433 frame->buf[i] = av_buffer_pool_get(pool->pools[0]);
434 if (!frame->buf[i])
435 goto fail;
436 frame->extended_data[i] = frame->data[i] = frame->buf[i]->data;
437 }
438 for (i = 0; i < frame->nb_extended_buf; i++) {
439 frame->extended_buf[i] = av_buffer_pool_get(pool->pools[0]);
440 if (!frame->extended_buf[i])
441 goto fail;
442 frame->extended_data[i + AV_NUM_DATA_POINTERS] = frame->extended_buf[i]->data;
443 }
444
445 if (avctx->debug & FF_DEBUG_BUFFERS)
446 av_log(avctx, AV_LOG_DEBUG, "default_get_buffer called on frame %p", frame);
447
448 return 0;
449 fail:
450 av_frame_unref(frame);
451 return AVERROR(ENOMEM);
452 }
453
454 static int video_get_buffer(AVCodecContext *s, AVFrame *pic)
455 {
456 FramePool *pool = s->internal->pool;
457 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pic->format);
458 int pixel_size = desc->comp[0].step_minus1 + 1;
459 int h_chroma_shift, v_chroma_shift;
460 int i;
461
462 if (pic->data[0] != NULL) {
463 av_log(s, AV_LOG_ERROR, "pic->data[0]!=NULL in avcodec_default_get_buffer\n");
464 return -1;
465 }
466
467 memset(pic->data, 0, sizeof(pic->data));
468 pic->extended_data = pic->data;
469
470 av_pix_fmt_get_chroma_sub_sample(s->pix_fmt, &h_chroma_shift, &v_chroma_shift);
471
472 for (i = 0; i < 4 && pool->pools[i]; i++) {
473 const int h_shift = i == 0 ? 0 : h_chroma_shift;
474 const int v_shift = i == 0 ? 0 : v_chroma_shift;
475
476 pic->linesize[i] = pool->linesize[i];
477
478 pic->buf[i] = av_buffer_pool_get(pool->pools[i]);
479 if (!pic->buf[i])
480 goto fail;
481
482 // no edge if EDGE EMU or not planar YUV
483 if ((s->flags & CODEC_FLAG_EMU_EDGE) || !pool->pools[2])
484 pic->data[i] = pic->buf[i]->data;
485 else {
486 pic->data[i] = pic->buf[i]->data +
487 FFALIGN((pic->linesize[i] * EDGE_WIDTH >> v_shift) +
488 (pixel_size * EDGE_WIDTH >> h_shift), pool->stride_align[i]);
489 }
490 }
491 for (; i < AV_NUM_DATA_POINTERS; i++) {
492 pic->data[i] = NULL;
493 pic->linesize[i] = 0;
494 }
495 if (pic->data[1] && !pic->data[2])
496 avpriv_set_systematic_pal2((uint32_t *)pic->data[1], s->pix_fmt);
497
498 if (s->debug & FF_DEBUG_BUFFERS)
499 av_log(s, AV_LOG_DEBUG, "default_get_buffer called on pic %p\n", pic);
500
501 return 0;
502 fail:
503 av_frame_unref(pic);
504 return AVERROR(ENOMEM);
505 }
506
507 int avcodec_default_get_buffer2(AVCodecContext *avctx, AVFrame *frame, int flags)
508 {
509 int ret;
510
511 if ((ret = update_frame_pool(avctx, frame)) < 0)
512 return ret;
513
514 #if FF_API_GET_BUFFER
515 FF_DISABLE_DEPRECATION_WARNINGS
516 frame->type = FF_BUFFER_TYPE_INTERNAL;
517 FF_ENABLE_DEPRECATION_WARNINGS
518 #endif
519
520 switch (avctx->codec_type) {
521 case AVMEDIA_TYPE_VIDEO:
522 return video_get_buffer(avctx, frame);
523 case AVMEDIA_TYPE_AUDIO:
524 return audio_get_buffer(avctx, frame);
525 default:
526 return -1;
527 }
528 }
529
530 #if FF_API_GET_BUFFER
531 FF_DISABLE_DEPRECATION_WARNINGS
532 int avcodec_default_get_buffer(AVCodecContext *avctx, AVFrame *frame)
533 {
534 return avcodec_default_get_buffer2(avctx, frame, 0);
535 }
536
537 typedef struct CompatReleaseBufPriv {
538 AVCodecContext avctx;
539 AVFrame frame;
540 } CompatReleaseBufPriv;
541
542 static void compat_free_buffer(void *opaque, uint8_t *data)
543 {
544 CompatReleaseBufPriv *priv = opaque;
545 if (priv->avctx.release_buffer)
546 priv->avctx.release_buffer(&priv->avctx, &priv->frame);
547 av_freep(&priv);
548 }
549
550 static void compat_release_buffer(void *opaque, uint8_t *data)
551 {
552 AVBufferRef *buf = opaque;
553 av_buffer_unref(&buf);
554 }
555 FF_ENABLE_DEPRECATION_WARNINGS
556 #endif
557
558 int ff_get_buffer(AVCodecContext *avctx, AVFrame *frame, int flags)
559 {
560 int ret;
561
562 switch (avctx->codec_type) {
563 case AVMEDIA_TYPE_VIDEO:
564 frame->width = FFMAX(avctx->width, avctx->coded_width);
565 frame->height = FFMAX(avctx->height, avctx->coded_height);
566 if (frame->format < 0)
567 frame->format = avctx->pix_fmt;
568 if (!frame->sample_aspect_ratio.num)
569 frame->sample_aspect_ratio = avctx->sample_aspect_ratio;
570
571 if ((ret = av_image_check_size(avctx->width, avctx->height, 0, avctx)) < 0)
572 return ret;
573 break;
574 case AVMEDIA_TYPE_AUDIO:
575 if (!frame->sample_rate)
576 frame->sample_rate = avctx->sample_rate;
577 if (frame->format < 0)
578 frame->format = avctx->sample_fmt;
579 if (!frame->channel_layout) {
580 if (avctx->channel_layout) {
581 if (av_get_channel_layout_nb_channels(avctx->channel_layout) !=
582 avctx->channels) {
583 av_log(avctx, AV_LOG_ERROR, "Inconsistent channel "
584 "configuration.\n");
585 return AVERROR(EINVAL);
586 }
587
588 frame->channel_layout = avctx->channel_layout;
589 } else {
590 if (avctx->channels > FF_SANE_NB_CHANNELS) {
591 av_log(avctx, AV_LOG_ERROR, "Too many channels: %d.\n",
592 avctx->channels);
593 return AVERROR(ENOSYS);
594 }
595
596 frame->channel_layout = av_get_default_channel_layout(avctx->channels);
597 if (!frame->channel_layout)
598 frame->channel_layout = (1ULL << avctx->channels) - 1;
599 }
600 }
601 break;
602 default: return AVERROR(EINVAL);
603 }
604
605 frame->pkt_pts = avctx->pkt ? avctx->pkt->pts : AV_NOPTS_VALUE;
606 frame->reordered_opaque = avctx->reordered_opaque;
607
608 #if FF_API_GET_BUFFER
609 FF_DISABLE_DEPRECATION_WARNINGS
610 /*
611 * Wrap an old get_buffer()-allocated buffer in an bunch of AVBuffers.
612 * We wrap each plane in its own AVBuffer. Each of those has a reference to
613 * a dummy AVBuffer as its private data, unreffing it on free.
614 * When all the planes are freed, the dummy buffer's free callback calls
615 * release_buffer().
616 */
617 if (avctx->get_buffer) {
618 CompatReleaseBufPriv *priv = NULL;
619 AVBufferRef *dummy_buf = NULL;
620 int planes, i, ret;
621
622 if (flags & AV_GET_BUFFER_FLAG_REF)
623 frame->reference = 1;
624
625 ret = avctx->get_buffer(avctx, frame);
626 if (ret < 0)
627 return ret;
628
629 /* return if the buffers are already set up
630 * this would happen e.g. when a custom get_buffer() calls
631 * avcodec_default_get_buffer
632 */
633 if (frame->buf[0])
634 return 0;
635
636 priv = av_mallocz(sizeof(*priv));
637 if (!priv) {
638 ret = AVERROR(ENOMEM);
639 goto fail;
640 }
641 priv->avctx = *avctx;
642 priv->frame = *frame;
643
644 dummy_buf = av_buffer_create(NULL, 0, compat_free_buffer, priv, 0);
645 if (!dummy_buf) {
646 ret = AVERROR(ENOMEM);
647 goto fail;
648 }
649
650 #define WRAP_PLANE(ref_out, data, data_size) \
651 do { \
652 AVBufferRef *dummy_ref = av_buffer_ref(dummy_buf); \
653 if (!dummy_ref) { \
654 ret = AVERROR(ENOMEM); \
655 goto fail; \
656 } \
657 ref_out = av_buffer_create(data, data_size, compat_release_buffer, \
658 dummy_ref, 0); \
659 if (!ref_out) { \
660 av_frame_unref(frame); \
661 ret = AVERROR(ENOMEM); \
662 goto fail; \
663 } \
664 } while (0)
665
666 if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
667 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(frame->format);
668
669 planes = av_pix_fmt_count_planes(frame->format);
670 /* workaround for AVHWAccel plane count of 0, buf[0] is used as
671 check for allocated buffers: make libavcodec happy */
672 if (desc && desc->flags & AV_PIX_FMT_FLAG_HWACCEL)
673 planes = 1;
674 if (!desc || planes <= 0) {
675 ret = AVERROR(EINVAL);
676 goto fail;
677 }
678
679 for (i = 0; i < planes; i++) {
680 int v_shift = (i == 1 || i == 2) ? desc->log2_chroma_h : 0;
681 int plane_size = (frame->height >> v_shift) * frame->linesize[i];
682
683 WRAP_PLANE(frame->buf[i], frame->data[i], plane_size);
684 }
685 } else {
686 int planar = av_sample_fmt_is_planar(frame->format);
687 planes = planar ? avctx->channels : 1;
688
689 if (planes > FF_ARRAY_ELEMS(frame->buf)) {
690 frame->nb_extended_buf = planes - FF_ARRAY_ELEMS(frame->buf);
691 frame->extended_buf = av_malloc(sizeof(*frame->extended_buf) *
692 frame->nb_extended_buf);
693 if (!frame->extended_buf) {
694 ret = AVERROR(ENOMEM);
695 goto fail;
696 }
697 }
698
699 for (i = 0; i < FFMIN(planes, FF_ARRAY_ELEMS(frame->buf)); i++)
700 WRAP_PLANE(frame->buf[i], frame->extended_data[i], frame->linesize[0]);
701
702 for (i = 0; i < frame->nb_extended_buf; i++)
703 WRAP_PLANE(frame->extended_buf[i],
704 frame->extended_data[i + FF_ARRAY_ELEMS(frame->buf)],
705 frame->linesize[0]);
706 }
707
708 av_buffer_unref(&dummy_buf);
709
710 frame->width = avctx->width;
711 frame->height = avctx->height;
712
713 return 0;
714
715 fail:
716 avctx->release_buffer(avctx, frame);
717 av_freep(&priv);
718 av_buffer_unref(&dummy_buf);
719 return ret;
720 }
721 FF_ENABLE_DEPRECATION_WARNINGS
722 #endif
723
724 ret = avctx->get_buffer2(avctx, frame, flags);
725
726 if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
727 frame->width = avctx->width;
728 frame->height = avctx->height;
729 }
730
731 return ret;
732 }
733
734 int ff_reget_buffer(AVCodecContext *avctx, AVFrame *frame)
735 {
736 AVFrame tmp;
737 int ret;
738
739 av_assert0(avctx->codec_type == AVMEDIA_TYPE_VIDEO);
740
741 if (!frame->data[0])
742 return ff_get_buffer(avctx, frame, AV_GET_BUFFER_FLAG_REF);
743
744 if (av_frame_is_writable(frame))
745 return 0;
746
747 av_frame_move_ref(&tmp, frame);
748
749 ret = ff_get_buffer(avctx, frame, AV_GET_BUFFER_FLAG_REF);
750 if (ret < 0) {
751 av_frame_unref(&tmp);
752 return ret;
753 }
754
755 av_image_copy(frame->data, frame->linesize, tmp.data, tmp.linesize,
756 frame->format, frame->width, frame->height);
757
758 av_frame_unref(&tmp);
759
760 return 0;
761 }
762
763 #if FF_API_GET_BUFFER
764 void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic)
765 {
766 av_frame_unref(pic);
767 }
768
769 int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic)
770 {
771 av_assert0(0);
772 return AVERROR_BUG;
773 }
774 #endif
775
776 int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2), void *arg, int *ret, int count, int size)
777 {
778 int i;
779
780 for (i = 0; i < count; i++) {
781 int r = func(c, (char *)arg + i * size);
782 if (ret)
783 ret[i] = r;
784 }
785 return 0;
786 }
787
788 int avcodec_default_execute2(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2, int jobnr, int threadnr), void *arg, int *ret, int count)
789 {
790 int i;
791
792 for (i = 0; i < count; i++) {
793 int r = func(c, arg, i, 0);
794 if (ret)
795 ret[i] = r;
796 }
797 return 0;
798 }
799
800 static int is_hwaccel_pix_fmt(enum AVPixelFormat pix_fmt)
801 {
802 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
803 return desc->flags & AV_PIX_FMT_FLAG_HWACCEL;
804 }
805
806 enum AVPixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum AVPixelFormat *fmt)
807 {
808 while (*fmt != AV_PIX_FMT_NONE && is_hwaccel_pix_fmt(*fmt))
809 ++fmt;
810 return fmt[0];
811 }
812
813 void avcodec_get_frame_defaults(AVFrame *frame)
814 {
815 if (frame->extended_data != frame->data)
816 av_freep(&frame->extended_data);
817
818 memset(frame, 0, sizeof(AVFrame));
819
820 frame->pts = AV_NOPTS_VALUE;
821 frame->key_frame = 1;
822 frame->sample_aspect_ratio = (AVRational) {0, 1 };
823 frame->format = -1; /* unknown */
824 frame->extended_data = frame->data;
825 }
826
827 AVFrame *avcodec_alloc_frame(void)
828 {
829 AVFrame *frame = av_mallocz(sizeof(AVFrame));
830
831 if (frame == NULL)
832 return NULL;
833
834 avcodec_get_frame_defaults(frame);
835
836 return frame;
837 }
838
839 void avcodec_free_frame(AVFrame **frame)
840 {
841 AVFrame *f;
842
843 if (!frame || !*frame)
844 return;
845
846 f = *frame;
847
848 if (f->extended_data != f->data)
849 av_freep(&f->extended_data);
850
851 av_freep(frame);
852 }
853
854 int attribute_align_arg avcodec_open2(AVCodecContext *avctx, const AVCodec *codec, AVDictionary **options)
855 {
856 int ret = 0;
857 AVDictionary *tmp = NULL;
858
859 if (avcodec_is_open(avctx))
860 return 0;
861
862 if ((!codec && !avctx->codec)) {
863 av_log(avctx, AV_LOG_ERROR, "No codec provided to avcodec_open2().\n");
864 return AVERROR(EINVAL);
865 }
866 if ((codec && avctx->codec && codec != avctx->codec)) {
867 av_log(avctx, AV_LOG_ERROR, "This AVCodecContext was allocated for %s, "
868 "but %s passed to avcodec_open2().\n", avctx->codec->name, codec->name);
869 return AVERROR(EINVAL);
870 }
871 if (!codec)
872 codec = avctx->codec;
873
874 if (avctx->extradata_size < 0 || avctx->extradata_size >= FF_MAX_EXTRADATA_SIZE)
875 return AVERROR(EINVAL);
876
877 if (options)
878 av_dict_copy(&tmp, *options, 0);
879
880 /* If there is a user-supplied mutex locking routine, call it. */
881 if (lockmgr_cb) {
882 if ((*lockmgr_cb)(&codec_mutex, AV_LOCK_OBTAIN))
883 return -1;
884 }
885
886 entangled_thread_counter++;
887 if (entangled_thread_counter != 1) {
888 av_log(avctx, AV_LOG_ERROR, "insufficient thread locking around avcodec_open/close()\n");
889 ret = -1;
890 goto end;
891 }
892
893 avctx->internal = av_mallocz(sizeof(AVCodecInternal));
894 if (!avctx->internal) {
895 ret = AVERROR(ENOMEM);
896 goto end;
897 }
898
899 avctx->internal->pool = av_mallocz(sizeof(*avctx->internal->pool));
900 if (!avctx->internal->pool) {
901 ret = AVERROR(ENOMEM);
902 goto free_and_end;
903 }
904
905 if (codec->priv_data_size > 0) {
906 if (!avctx->priv_data) {
907 avctx->priv_data = av_mallocz(codec->priv_data_size);
908 if (!avctx->priv_data) {
909 ret = AVERROR(ENOMEM);
910 goto end;
911 }
912 if (codec->priv_class) {
913 *(const AVClass **)avctx->priv_data = codec->priv_class;
914 av_opt_set_defaults(avctx->priv_data);
915 }
916 }
917 if (codec->priv_class && (ret = av_opt_set_dict(avctx->priv_data, &tmp)) < 0)
918 goto free_and_end;
919 } else {
920 avctx->priv_data = NULL;
921 }
922 if ((ret = av_opt_set_dict(avctx, &tmp)) < 0)
923 goto free_and_end;
924
925 if (avctx->coded_width && avctx->coded_height && !avctx->width && !avctx->height)
926 avcodec_set_dimensions(avctx, avctx->coded_width, avctx->coded_height);
927 else if (avctx->width && avctx->height)
928 avcodec_set_dimensions(avctx, avctx->width, avctx->height);
929
930 if ((avctx->coded_width || avctx->coded_height || avctx->width || avctx->height)
931 && ( av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx) < 0
932 || av_image_check_size(avctx->width, avctx->height, 0, avctx) < 0)) {
933 av_log(avctx, AV_LOG_WARNING, "ignoring invalid width/height values\n");
934 avcodec_set_dimensions(avctx, 0, 0);
935 }
936
937 /* if the decoder init function was already called previously,
938 * free the already allocated subtitle_header before overwriting it */
939 if (av_codec_is_decoder(codec))
940 av_freep(&avctx->subtitle_header);
941
942 if (avctx->channels > FF_SANE_NB_CHANNELS) {
943 ret = AVERROR(EINVAL);
944 goto free_and_end;
945 }
946
947 avctx->codec = codec;
948 if ((avctx->codec_type == AVMEDIA_TYPE_UNKNOWN || avctx->codec_type == codec->type) &&
949 avctx->codec_id == AV_CODEC_ID_NONE) {
950 avctx->codec_type = codec->type;
951 avctx->codec_id = codec->id;
952 }
953 if (avctx->codec_id != codec->id || (avctx->codec_type != codec->type
954 && avctx->codec_type != AVMEDIA_TYPE_ATTACHMENT)) {
955 av_log(avctx, AV_LOG_ERROR, "codec type or id mismatches\n");
956 ret = AVERROR(EINVAL);
957 goto free_and_end;
958 }
959 avctx->frame_number = 0;
960
961 if (avctx->codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
962 avctx->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
963 ret = AVERROR_EXPERIMENTAL;
964 goto free_and_end;
965 }
966
967 if (avctx->codec_type == AVMEDIA_TYPE_AUDIO &&
968 (!avctx->time_base.num || !avctx->time_base.den)) {
969 avctx->time_base.num = 1;
970 avctx->time_base.den = avctx->sample_rate;
971 }
972
973 if (HAVE_THREADS) {
974 ret = ff_thread_init(avctx);
975 if (ret < 0) {
976 goto free_and_end;
977 }
978 }
979 if (!HAVE_THREADS && !(codec->capabilities & CODEC_CAP_AUTO_THREADS))
980 avctx->thread_count = 1;
981
982 if (av_codec_is_encoder(avctx->codec)) {
983 int i;
984 if (avctx->codec->sample_fmts) {
985 for (i = 0; avctx->codec->sample_fmts[i] != AV_SAMPLE_FMT_NONE; i++) {
986 if (avctx->sample_fmt == avctx->codec->sample_fmts[i])
987 break;
988 if (avctx->channels == 1 &&
989 av_get_planar_sample_fmt(avctx->sample_fmt) ==
990 av_get_planar_sample_fmt(avctx->codec->sample_fmts[i])) {
991 avctx->sample_fmt = avctx->codec->sample_fmts[i];
992 break;
993 }
994 }
995 if (avctx->codec->sample_fmts[i] == AV_SAMPLE_FMT_NONE) {
996 av_log(avctx, AV_LOG_ERROR, "Specified sample_fmt is not supported.\n");
997 ret = AVERROR(EINVAL);
998 goto free_and_end;
999 }
1000 }
1001 if (avctx->codec->pix_fmts) {
1002 for (i = 0; avctx->codec->pix_fmts[i] != AV_PIX_FMT_NONE; i++)
1003 if (avctx->pix_fmt == avctx->codec->pix_fmts[i])
1004 break;
1005 if (avctx->codec->pix_fmts[i] == AV_PIX_FMT_NONE) {
1006 av_log(avctx, AV_LOG_ERROR, "Specified pix_fmt is not supported\n");
1007 ret = AVERROR(EINVAL);
1008 goto free_and_end;
1009 }
1010 }
1011 if (avctx->codec->supported_samplerates) {
1012 for (i = 0; avctx->codec->supported_samplerates[i] != 0; i++)
1013 if (avctx->sample_rate == avctx->codec->supported_samplerates[i])
1014 break;
1015 if (avctx->codec->supported_samplerates[i] == 0) {
1016 av_log(avctx, AV_LOG_ERROR, "Specified sample_rate is not supported\n");
1017 ret = AVERROR(EINVAL);
1018 goto free_and_end;
1019 }
1020 }
1021 if (avctx->codec->channel_layouts) {
1022 if (!avctx->channel_layout) {
1023 av_log(avctx, AV_LOG_WARNING, "channel_layout not specified\n");
1024 } else {
1025 for (i = 0; avctx->codec->channel_layouts[i] != 0; i++)
1026 if (avctx->channel_layout == avctx->codec->channel_layouts[i])
1027 break;
1028 if (avctx->codec->channel_layouts[i] == 0) {
1029 av_log(avctx, AV_LOG_ERROR, "Specified channel_layout is not supported\n");
1030 ret = AVERROR(EINVAL);
1031 goto free_and_end;
1032 }
1033 }
1034 }
1035 if (avctx->channel_layout && avctx->channels) {
1036 if (av_get_channel_layout_nb_channels(avctx->channel_layout) != avctx->channels) {
1037 av_log(avctx, AV_LOG_ERROR, "channel layout does not match number of channels\n");
1038 ret = AVERROR(EINVAL);
1039 goto free_and_end;
1040 }
1041 } else if (avctx->channel_layout) {
1042 avctx->channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
1043 }
1044
1045 if (!avctx->rc_initial_buffer_occupancy)
1046 avctx->rc_initial_buffer_occupancy = avctx->rc_buffer_size * 3 / 4;
1047 }
1048
1049 if (avctx->codec->init && !(avctx->active_thread_type & FF_THREAD_FRAME)) {
1050 ret = avctx->codec->init(avctx);
1051 if (ret < 0) {
1052 goto free_and_end;
1053 }
1054 }
1055
1056 if (av_codec_is_decoder(avctx->codec)) {
1057 /* validate channel layout from the decoder */
1058 if (avctx->channel_layout) {
1059 int channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
1060 if (!avctx->channels)
1061 avctx->channels = channels;
1062 else if (channels != avctx->channels) {
1063 av_log(avctx, AV_LOG_WARNING,
1064 "channel layout does not match number of channels\n");
1065 avctx->channel_layout = 0;
1066 }
1067 }
1068 if (avctx->channels && avctx->channels < 0 ||
1069 avctx->channels > FF_SANE_NB_CHANNELS) {
1070 ret = AVERROR(EINVAL);
1071 goto free_and_end;
1072 }
1073 }
1074 end:
1075 entangled_thread_counter--;
1076
1077 /* Release any user-supplied mutex. */
1078 if (lockmgr_cb) {
1079 (*lockmgr_cb)(&codec_mutex, AV_LOCK_RELEASE);
1080 }
1081 if (options) {
1082 av_dict_free(options);
1083 *options = tmp;
1084 }
1085
1086 return ret;
1087 free_and_end:
1088 av_dict_free(&tmp);
1089 av_freep(&avctx->priv_data);
1090 if (avctx->internal)
1091 av_freep(&avctx->internal->pool);
1092 av_freep(&avctx->internal);
1093 avctx->codec = NULL;
1094 goto end;
1095 }
1096
1097 int ff_alloc_packet(AVPacket *avpkt, int size)
1098 {
1099 if (size > INT_MAX - FF_INPUT_BUFFER_PADDING_SIZE)
1100 return AVERROR(EINVAL);
1101
1102 if (avpkt->data) {
1103 AVBufferRef *buf = avpkt->buf;
1104 #if FF_API_DESTRUCT_PACKET
1105 FF_DISABLE_DEPRECATION_WARNINGS
1106 void *destruct = avpkt->destruct;
1107 FF_ENABLE_DEPRECATION_WARNINGS
1108 #endif
1109
1110 if (avpkt->size < size)
1111 return AVERROR(EINVAL);
1112
1113 av_init_packet(avpkt);
1114 #if FF_API_DESTRUCT_PACKET
1115 FF_DISABLE_DEPRECATION_WARNINGS
1116 avpkt->destruct = destruct;
1117 FF_ENABLE_DEPRECATION_WARNINGS
1118 #endif
1119 avpkt->buf = buf;
1120 avpkt->size = size;
1121 return 0;
1122 } else {
1123 return av_new_packet(avpkt, size);
1124 }
1125 }
1126
1127 /**
1128 * Pad last frame with silence.
1129 */
1130 static int pad_last_frame(AVCodecContext *s, AVFrame **dst, const AVFrame *src)
1131 {
1132 AVFrame *frame = NULL;
1133 int ret;
1134
1135 if (!(frame = avcodec_alloc_frame()))
1136 return AVERROR(ENOMEM);
1137
1138 frame->format = src->format;
1139 frame->channel_layout = src->channel_layout;
1140 frame->nb_samples = s->frame_size;
1141 ret = av_frame_get_buffer(frame, 32);
1142 if (ret < 0)
1143 goto fail;
1144
1145 ret = av_frame_copy_props(frame, src);
1146 if (ret < 0)
1147 goto fail;
1148
1149 if ((ret = av_samples_copy(frame->extended_data, src->extended_data, 0, 0,
1150 src->nb_samples, s->channels, s->sample_fmt)) < 0)
1151 goto fail;
1152 if ((ret = av_samples_set_silence(frame->extended_data, src->nb_samples,
1153 frame->nb_samples - src->nb_samples,
1154 s->channels, s->sample_fmt)) < 0)
1155 goto fail;
1156
1157 *dst = frame;
1158
1159 return 0;
1160
1161 fail:
1162 av_frame_free(&frame);
1163 return ret;
1164 }
1165
1166 int attribute_align_arg avcodec_encode_audio2(AVCodecContext *avctx,
1167 AVPacket *avpkt,
1168 const AVFrame *frame,
1169 int *got_packet_ptr)
1170 {
1171 AVFrame tmp;
1172 AVFrame *padded_frame = NULL;
1173 int ret;
1174 int user_packet = !!avpkt->data;
1175
1176 *got_packet_ptr = 0;
1177
1178 if (!(avctx->codec->capabilities & CODEC_CAP_DELAY) && !frame) {
1179 av_free_packet(avpkt);
1180 av_init_packet(avpkt);
1181 return 0;
1182 }
1183
1184 /* ensure that extended_data is properly set */
1185 if (frame && !frame->extended_data) {
1186 if (av_sample_fmt_is_planar(avctx->sample_fmt) &&
1187 avctx->channels > AV_NUM_DATA_POINTERS) {
1188 av_log(avctx, AV_LOG_ERROR, "Encoding to a planar sample format, "
1189 "with more than %d channels, but extended_data is not set.\n",
1190 AV_NUM_DATA_POINTERS);
1191 return AVERROR(EINVAL);
1192 }
1193 av_log(avctx, AV_LOG_WARNING, "extended_data is not set.\n");
1194
1195 tmp = *frame;
1196 tmp.extended_data = tmp.data;
1197 frame = &tmp;
1198 }
1199
1200 /* check for valid frame size */
1201 if (frame) {
1202 if (avctx->codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME) {
1203 if (frame->nb_samples > avctx->frame_size)
1204 return AVERROR(EINVAL);
1205 } else if (!(avctx->codec->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE)) {
1206 if (frame->nb_samples < avctx->frame_size &&
1207 !avctx->internal->last_audio_frame) {
1208 ret = pad_last_frame(avctx, &padded_frame, frame);
1209 if (ret < 0)
1210 return ret;
1211
1212 frame = padded_frame;
1213 avctx->internal->last_audio_frame = 1;
1214 }
1215
1216 if (frame->nb_samples != avctx->frame_size) {
1217 ret = AVERROR(EINVAL);
1218 goto end;
1219 }
1220 }
1221 }
1222
1223 ret = avctx->codec->encode2(avctx, avpkt, frame, got_packet_ptr);
1224 if (!ret) {
1225 if (*got_packet_ptr) {
1226 if (!(avctx->codec->capabilities & CODEC_CAP_DELAY)) {
1227 if (avpkt->pts == AV_NOPTS_VALUE)
1228 avpkt->pts = frame->pts;
1229 if (!avpkt->duration)
1230 avpkt->duration = ff_samples_to_time_base(avctx,
1231 frame->nb_samples);
1232 }
1233 avpkt->dts = avpkt->pts;
1234 } else {
1235 avpkt->size = 0;
1236 }
1237
1238 if (!user_packet && avpkt->size) {
1239 ret = av_buffer_realloc(&avpkt->buf, avpkt->size);
1240 if (ret >= 0)
1241 avpkt->data = avpkt->buf->data;
1242 }
1243
1244 avctx->frame_number++;
1245 }
1246
1247 if (ret < 0 || !*got_packet_ptr) {
1248 av_free_packet(avpkt);
1249 av_init_packet(avpkt);
1250 goto end;
1251 }
1252
1253 /* NOTE: if we add any audio encoders which output non-keyframe packets,
1254 * this needs to be moved to the encoders, but for now we can do it
1255 * here to simplify things */
1256 avpkt->flags |= AV_PKT_FLAG_KEY;
1257
1258 end:
1259 av_frame_free(&padded_frame);
1260
1261 return ret;
1262 }
1263
1264 int attribute_align_arg avcodec_encode_video2(AVCodecContext *avctx,
1265 AVPacket *avpkt,
1266 const AVFrame *frame,
1267 int *got_packet_ptr)
1268 {
1269 int ret;
1270 int user_packet = !!avpkt->data;
1271
1272 *got_packet_ptr = 0;
1273
1274 if (!(avctx->codec->capabilities & CODEC_CAP_DELAY) && !frame) {
1275 av_free_packet(avpkt);
1276 av_init_packet(avpkt);
1277 avpkt->size = 0;
1278 return 0;
1279 }
1280
1281 if (av_image_check_size(avctx->width, avctx->height, 0, avctx))
1282 return AVERROR(EINVAL);
1283
1284 av_assert0(avctx->codec->encode2);
1285
1286 ret = avctx->codec->encode2(avctx, avpkt, frame, got_packet_ptr);
1287 if (!ret) {
1288 if (!*got_packet_ptr)
1289 avpkt->size = 0;
1290 else if (!(avctx->codec->capabilities & CODEC_CAP_DELAY))
1291 avpkt->pts = avpkt->dts = frame->pts;
1292
1293 if (!user_packet && avpkt->size) {
1294 ret = av_buffer_realloc(&avpkt->buf, avpkt->size);
1295 if (ret >= 0)
1296 avpkt->data = avpkt->buf->data;
1297 }
1298
1299 avctx->frame_number++;
1300 }
1301
1302 if (ret < 0 || !*got_packet_ptr)
1303 av_free_packet(avpkt);
1304
1305 emms_c();
1306 return ret;
1307 }
1308
1309 int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size,
1310 const AVSubtitle *sub)
1311 {
1312 int ret;
1313 if (sub->start_display_time) {
1314 av_log(avctx, AV_LOG_ERROR, "start_display_time must be 0.\n");
1315 return -1;
1316 }
1317 if (sub->num_rects == 0 || !sub->rects)
1318 return -1;
1319 ret = avctx->codec->encode_sub(avctx, buf, buf_size, sub);
1320 avctx->frame_number++;
1321 return ret;
1322 }
1323
1324 static void apply_param_change(AVCodecContext *avctx, AVPacket *avpkt)
1325 {
1326 int size = 0;
1327 const uint8_t *data;
1328 uint32_t flags;
1329
1330 if (!(avctx->codec->capabilities & CODEC_CAP_PARAM_CHANGE))
1331 return;
1332
1333 data = av_packet_get_side_data(avpkt, AV_PKT_DATA_PARAM_CHANGE, &size);
1334 if (!data || size < 4)
1335 return;
1336 flags = bytestream_get_le32(&data);
1337 size -= 4;
1338 if (size < 4) /* Required for any of the changes */
1339 return;
1340 if (flags & AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_COUNT) {
1341 avctx->channels = bytestream_get_le32(&data);
1342 size -= 4;
1343 }
1344 if (flags & AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_LAYOUT) {
1345 if (size < 8)
1346 return;
1347 avctx->channel_layout = bytestream_get_le64(&data);
1348 size -= 8;
1349 }
1350 if (size < 4)
1351 return;
1352 if (flags & AV_SIDE_DATA_PARAM_CHANGE_SAMPLE_RATE) {
1353 avctx->sample_rate = bytestream_get_le32(&data);
1354 size -= 4;
1355 }
1356 if (flags & AV_SIDE_DATA_PARAM_CHANGE_DIMENSIONS) {
1357 if (size < 8)
1358 return;
1359 avctx->width = bytestream_get_le32(&data);
1360 avctx->height = bytestream_get_le32(&data);
1361 avcodec_set_dimensions(avctx, avctx->width, avctx->height);
1362 size -= 8;
1363 }
1364 }
1365
1366 int attribute_align_arg avcodec_decode_video2(AVCodecContext *avctx, AVFrame *picture,
1367 int *got_picture_ptr,
1368 AVPacket *avpkt)
1369 {
1370 AVCodecInternal *avci = avctx->internal;
1371 int ret;
1372
1373 *got_picture_ptr = 0;
1374 if ((avctx->coded_width || avctx->coded_height) && av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx))
1375 return -1;
1376
1377 avctx->pkt = avpkt;
1378 apply_param_change(avctx, avpkt);
1379
1380 avcodec_get_frame_defaults(picture);
1381
1382 if (!avctx->refcounted_frames)
1383 av_frame_unref(&avci->to_free);
1384
1385 if ((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size || (avctx->active_thread_type & FF_THREAD_FRAME)) {
1386 if (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME)
1387 ret = ff_thread_decode_frame(avctx, picture, got_picture_ptr,
1388 avpkt);
1389 else {
1390 ret = avctx->codec->decode(avctx, picture, got_picture_ptr,
1391 avpkt);
1392 picture->pkt_dts = avpkt->dts;
1393 /* get_buffer is supposed to set frame parameters */
1394 if (!(avctx->codec->capabilities & CODEC_CAP_DR1)) {
1395 picture->sample_aspect_ratio = avctx->sample_aspect_ratio;
1396 picture->width = avctx->width;
1397 picture->height = avctx->height;
1398 picture->format = avctx->pix_fmt;
1399 }
1400 }
1401
1402 emms_c(); //needed to avoid an emms_c() call before every return;
1403
1404 if (ret < 0 && picture->data[0])
1405 av_frame_unref(picture);
1406
1407 if (*got_picture_ptr) {
1408 if (!avctx->refcounted_frames) {
1409 avci->to_free = *picture;
1410 avci->to_free.extended_data = avci->to_free.data;
1411 memset(picture->buf, 0, sizeof(picture->buf));
1412 }
1413
1414 avctx->frame_number++;
1415 }
1416 } else
1417 ret = 0;
1418
1419 /* many decoders assign whole AVFrames, thus overwriting extended_data;
1420 * make sure it's set correctly */
1421 picture->extended_data = picture->data;
1422
1423 return ret;
1424 }
1425
1426 int attribute_align_arg avcodec_decode_audio4(AVCodecContext *avctx,
1427 AVFrame *frame,
1428 int *got_frame_ptr,
1429 AVPacket *avpkt)
1430 {
1431 AVCodecInternal *avci = avctx->internal;
1432 int planar, channels;
1433 int ret = 0;
1434
1435 *got_frame_ptr = 0;
1436
1437 avctx->pkt = avpkt;
1438
1439 if (!avpkt->data && avpkt->size) {
1440 av_log(avctx, AV_LOG_ERROR, "invalid packet: NULL data, size != 0\n");
1441 return AVERROR(EINVAL);
1442 }
1443
1444 apply_param_change(avctx, avpkt);
1445
1446 avcodec_get_frame_defaults(frame);
1447
1448 if (!avctx->refcounted_frames)
1449 av_frame_unref(&avci->to_free);
1450
1451 if ((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size) {
1452 ret = avctx->codec->decode(avctx, frame, got_frame_ptr, avpkt);
1453 if (ret >= 0 && *got_frame_ptr) {
1454 avctx->frame_number++;
1455 frame->pkt_dts = avpkt->dts;
1456 if (frame->format == AV_SAMPLE_FMT_NONE)
1457 frame->format = avctx->sample_fmt;
1458
1459 if (!avctx->refcounted_frames) {
1460 avci->to_free = *frame;
1461 avci->to_free.extended_data = avci->to_free.data;
1462 memset(frame->buf, 0, sizeof(frame->buf));
1463 frame->extended_buf = NULL;
1464 frame->nb_extended_buf = 0;
1465 }
1466 } else if (frame->data[0])
1467 av_frame_unref(frame);
1468 }
1469
1470 /* many decoders assign whole AVFrames, thus overwriting extended_data;
1471 * make sure it's set correctly; assume decoders that actually use
1472 * extended_data are doing it correctly */
1473 planar = av_sample_fmt_is_planar(frame->format);
1474 channels = av_get_channel_layout_nb_channels(frame->channel_layout);
1475 if (!(planar && channels > AV_NUM_DATA_POINTERS))
1476 frame->extended_data = frame->data;
1477
1478 return ret;
1479 }
1480
1481 int avcodec_decode_subtitle2(AVCodecContext *avctx, AVSubtitle *sub,
1482 int *got_sub_ptr,
1483 AVPacket *avpkt)
1484 {
1485 int ret;
1486
1487 avctx->pkt = avpkt;
1488 *got_sub_ptr = 0;
1489 ret = avctx->codec->decode(avctx, sub, got_sub_ptr, avpkt);
1490 if (*got_sub_ptr)
1491 avctx->frame_number++;
1492 return ret;
1493 }
1494
1495 void avsubtitle_free(AVSubtitle *sub)
1496 {
1497 int i;
1498
1499 for (i = 0; i < sub->num_rects; i++) {
1500 av_freep(&sub->rects[i]->pict.data[0]);
1501 av_freep(&sub->rects[i]->pict.data[1]);
1502 av_freep(&sub->rects[i]->pict.data[2]);
1503 av_freep(&sub->rects[i]->pict.data[3]);
1504 av_freep(&sub->rects[i]->text);
1505 av_freep(&sub->rects[i]->ass);
1506 av_freep(&sub->rects[i]);
1507 }
1508
1509 av_freep(&sub->rects);
1510
1511 memset(sub, 0, sizeof(AVSubtitle));
1512 }
1513
1514 av_cold int avcodec_close(AVCodecContext *avctx)
1515 {
1516 /* If there is a user-supplied mutex locking routine, call it. */
1517 if (lockmgr_cb) {
1518 if ((*lockmgr_cb)(&codec_mutex, AV_LOCK_OBTAIN))
1519 return -1;
1520 }
1521
1522 entangled_thread_counter++;
1523 if (entangled_thread_counter != 1) {
1524 av_log(avctx, AV_LOG_ERROR, "insufficient thread locking around avcodec_open/close()\n");
1525 entangled_thread_counter--;
1526 return -1;
1527 }
1528
1529 if (avcodec_is_open(avctx)) {
1530 FramePool *pool = avctx->internal->pool;
1531 int i;
1532 if (HAVE_THREADS && avctx->thread_opaque)
1533 ff_thread_free(avctx);
1534 if (avctx->codec && avctx->codec->close)
1535 avctx->codec->close(avctx);
1536 avctx->coded_frame = NULL;
1537 if (!avctx->refcounted_frames)
1538 av_frame_unref(&avctx->internal->to_free);
1539 for (i = 0; i < FF_ARRAY_ELEMS(pool->pools); i++)
1540 av_buffer_pool_uninit(&pool->pools[i]);
1541 av_freep(&avctx->internal->pool);
1542 av_freep(&avctx->internal);
1543 }
1544
1545 if (avctx->priv_data && avctx->codec && avctx->codec->priv_class)
1546 av_opt_free(avctx->priv_data);
1547 av_opt_free(avctx);
1548 av_freep(&avctx->priv_data);
1549 if (av_codec_is_encoder(avctx->codec))
1550 av_freep(&avctx->extradata);
1551 avctx->codec = NULL;
1552 avctx->active_thread_type = 0;
1553 entangled_thread_counter--;
1554
1555 /* Release any user-supplied mutex. */
1556 if (lockmgr_cb) {
1557 (*lockmgr_cb)(&codec_mutex, AV_LOCK_RELEASE);
1558 }
1559 return 0;
1560 }
1561
1562 static AVCodec *find_encdec(enum AVCodecID id, int encoder)
1563 {
1564 AVCodec *p, *experimental = NULL;
1565 p = first_avcodec;
1566 while (p) {
1567 if ((encoder ? av_codec_is_encoder(p) : av_codec_is_decoder(p)) &&
1568 p->id == id) {
1569 if (p->capabilities & CODEC_CAP_EXPERIMENTAL && !experimental) {
1570 experimental = p;
1571 } else
1572 return p;
1573 }
1574 p = p->next;
1575 }
1576 return experimental;
1577 }
1578
1579 AVCodec *avcodec_find_encoder(enum AVCodecID id)
1580 {
1581 return find_encdec(id, 1);
1582 }
1583
1584 AVCodec *avcodec_find_encoder_by_name(const char *name)
1585 {
1586 AVCodec *p;
1587 if (!name)
1588 return NULL;
1589 p = first_avcodec;
1590 while (p) {
1591 if (av_codec_is_encoder(p) && strcmp(name, p->name) == 0)
1592 return p;
1593 p = p->next;
1594 }
1595 return NULL;
1596 }
1597
1598 AVCodec *avcodec_find_decoder(enum AVCodecID id)
1599 {
1600 return find_encdec(id, 0);
1601 }
1602
1603 AVCodec *avcodec_find_decoder_by_name(const char *name)
1604 {
1605 AVCodec *p;
1606 if (!name)
1607 return NULL;
1608 p = first_avcodec;
1609 while (p) {
1610 if (av_codec_is_decoder(p) && strcmp(name, p->name) == 0)
1611 return p;
1612 p = p->next;
1613 }
1614 return NULL;
1615 }
1616
1617 static int get_bit_rate(AVCodecContext *ctx)
1618 {
1619 int bit_rate;
1620 int bits_per_sample;
1621
1622 switch (ctx->codec_type) {
1623 case AVMEDIA_TYPE_VIDEO:
1624 case AVMEDIA_TYPE_DATA:
1625 case AVMEDIA_TYPE_SUBTITLE:
1626 case AVMEDIA_TYPE_ATTACHMENT:
1627 bit_rate = ctx->bit_rate;
1628 break;
1629 case AVMEDIA_TYPE_AUDIO:
1630 bits_per_sample = av_get_bits_per_sample(ctx->codec_id);
1631 bit_rate = bits_per_sample ? ctx->sample_rate * ctx->channels * bits_per_sample : ctx->bit_rate;
1632 break;
1633 default:
1634 bit_rate = 0;
1635 break;
1636 }
1637 return bit_rate;
1638 }
1639
1640 size_t av_get_codec_tag_string(char *buf, size_t buf_size, unsigned int codec_tag)
1641 {
1642 int i, len, ret = 0;
1643
1644 #define TAG_PRINT(x) \
1645 (((x) >= '0' && (x) <= '9') || \
1646 ((x) >= 'a' && (x) <= 'z') || ((x) >= 'A' && (x) <= 'Z') || \
1647 ((x) == '.' || (x) == ' '))
1648
1649 for (i = 0; i < 4; i++) {
1650 len = snprintf(buf, buf_size,
1651 TAG_PRINT(codec_tag & 0xFF) ? "%c" : "[%d]", codec_tag & 0xFF);
1652 buf += len;
1653 buf_size = buf_size > len ? buf_size - len : 0;
1654 ret += len;
1655 codec_tag >>= 8;
1656 }
1657 return ret;
1658 }
1659
1660 void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)
1661 {
1662 const char *codec_name;
1663 const char *profile = NULL;
1664 const AVCodec *p;
1665 char buf1[32];
1666 int bitrate;
1667 AVRational display_aspect_ratio;
1668
1669 if (enc->codec)
1670 p = enc->codec;
1671 else if (encode)
1672 p = avcodec_find_encoder(enc->codec_id);
1673 else
1674 p = avcodec_find_decoder(enc->codec_id);
1675
1676 if (p) {
1677 codec_name = p->name;
1678 profile = av_get_profile_name(p, enc->profile);
1679 } else if (enc->codec_id == AV_CODEC_ID_MPEG2TS) {
1680 /* fake mpeg2 transport stream codec (currently not
1681 * registered) */
1682 codec_name = "mpeg2ts";
1683 } else if (enc->codec_name[0] != '\0') {
1684 codec_name = enc->codec_name;
1685 } else {
1686 /* output avi tags */
1687 char tag_buf[32];
1688 av_get_codec_tag_string(tag_buf, sizeof(tag_buf), enc->codec_tag);
1689 snprintf(buf1, sizeof(buf1), "%s / 0x%04X", tag_buf, enc->codec_tag);
1690 codec_name = buf1;
1691 }
1692
1693 switch (enc->codec_type) {
1694 case AVMEDIA_TYPE_VIDEO:
1695 snprintf(buf, buf_size,
1696 "Video: %s%s",
1697 codec_name, enc->mb_decision ? " (hq)" : "");
1698 if (profile)
1699 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1700 " (%s)", profile);
1701 if (enc->pix_fmt != AV_PIX_FMT_NONE) {
1702 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1703 ", %s",
1704 av_get_pix_fmt_name(enc->pix_fmt));
1705 }
1706 if (enc->width) {
1707 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1708 ", %dx%d",
1709 enc->width, enc->height);
1710 if (enc->sample_aspect_ratio.num) {
1711 av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
1712 enc->width * enc->sample_aspect_ratio.num,
1713 enc->height * enc->sample_aspect_ratio.den,
1714 1024 * 1024);
1715 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1716 " [PAR %d:%d DAR %d:%d]",
1717 enc->sample_aspect_ratio.num, enc->sample_aspect_ratio.den,
1718 display_aspect_ratio.num, display_aspect_ratio.den);
1719 }
1720 if (av_log_get_level() >= AV_LOG_DEBUG) {
1721 int g = av_gcd(enc->time_base.num, enc->time_base.den);
1722 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1723 ", %d/%d",
1724 enc->time_base.num / g, enc->time_base.den / g);
1725 }
1726 }
1727 if (encode) {
1728 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1729 ", q=%d-%d", enc->qmin, enc->qmax);
1730 }
1731 break;
1732 case AVMEDIA_TYPE_AUDIO:
1733 snprintf(buf, buf_size,
1734 "Audio: %s",
1735 codec_name);
1736 if (profile)
1737 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1738 " (%s)", profile);
1739 if (enc->sample_rate) {
1740 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1741 ", %d Hz", enc->sample_rate);
1742 }
1743 av_strlcat(buf, ", ", buf_size);
1744 av_get_channel_layout_string(buf + strlen(buf), buf_size - strlen(buf), enc->channels, enc->channel_layout);
1745 if (enc->sample_fmt != AV_SAMPLE_FMT_NONE) {
1746 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1747 ", %s", av_get_sample_fmt_name(enc->sample_fmt));
1748 }
1749 break;
1750 case AVMEDIA_TYPE_DATA:
1751 snprintf(buf, buf_size, "Data: %s", codec_name);
1752 break;
1753 case AVMEDIA_TYPE_SUBTITLE:
1754 snprintf(buf, buf_size, "Subtitle: %s", codec_name);
1755 break;
1756 case AVMEDIA_TYPE_ATTACHMENT:
1757 snprintf(buf, buf_size, "Attachment: %s", codec_name);
1758 break;
1759 default:
1760 snprintf(buf, buf_size, "Invalid Codec type %d", enc->codec_type);
1761 return;
1762 }
1763 if (encode) {
1764 if (enc->flags & CODEC_FLAG_PASS1)
1765 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1766 ", pass 1");
1767 if (enc->flags & CODEC_FLAG_PASS2)
1768 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1769 ", pass 2");
1770 }
1771 bitrate = get_bit_rate(enc);
1772 if (bitrate != 0) {
1773 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1774 ", %d kb/s", bitrate / 1000);
1775 }
1776 }
1777
1778 const char *av_get_profile_name(const AVCodec *codec, int profile)
1779 {
1780 const AVProfile *p;
1781 if (profile == FF_PROFILE_UNKNOWN || !codec->profiles)
1782 return NULL;
1783
1784 for (p = codec->profiles; p->profile != FF_PROFILE_UNKNOWN; p++)
1785 if (p->profile == profile)
1786 return p->name;
1787
1788 return NULL;
1789 }
1790
1791 unsigned avcodec_version(void)
1792 {
1793 return LIBAVCODEC_VERSION_INT;
1794 }
1795
1796 const char *avcodec_configuration(void)
1797 {
1798 return LIBAV_CONFIGURATION;
1799 }
1800
1801 const char *avcodec_license(void)
1802 {
1803 #define LICENSE_PREFIX "libavcodec license: "
1804 return LICENSE_PREFIX LIBAV_LICENSE + sizeof(LICENSE_PREFIX) - 1;
1805 }
1806
1807 void avcodec_flush_buffers(AVCodecContext *avctx)
1808 {
1809 if (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME)
1810 ff_thread_flush(avctx);
1811 else if (avctx->codec->flush)
1812 avctx->codec->flush(avctx);
1813
1814 if (!avctx->refcounted_frames)
1815 av_frame_unref(&avctx->internal->to_free);
1816 }
1817
1818 int av_get_exact_bits_per_sample(enum AVCodecID codec_id)
1819 {
1820 switch (codec_id) {
1821 case AV_CODEC_ID_ADPCM_CT:
1822 case AV_CODEC_ID_ADPCM_IMA_APC:
1823 case AV_CODEC_ID_ADPCM_IMA_EA_SEAD:
1824 case AV_CODEC_ID_ADPCM_IMA_WS:
1825 case AV_CODEC_ID_ADPCM_G722:
1826 case AV_CODEC_ID_ADPCM_YAMAHA:
1827 return 4;
1828 case AV_CODEC_ID_PCM_ALAW:
1829 case AV_CODEC_ID_PCM_MULAW:
1830 case AV_CODEC_ID_PCM_S8:
1831 case AV_CODEC_ID_PCM_U8:
1832 case AV_CODEC_ID_PCM_ZORK:
1833 return 8;
1834 case AV_CODEC_ID_PCM_S16BE:
1835 case AV_CODEC_ID_PCM_S16LE:
1836 case AV_CODEC_ID_PCM_S16LE_PLANAR:
1837 case AV_CODEC_ID_PCM_U16BE:
1838 case AV_CODEC_ID_PCM_U16LE:
1839 return 16;
1840 case AV_CODEC_ID_PCM_S24DAUD:
1841 case AV_CODEC_ID_PCM_S24BE:
1842 case AV_CODEC_ID_PCM_S24LE:
1843 case AV_CODEC_ID_PCM_S24LE_PLANAR:
1844 case AV_CODEC_ID_PCM_U24BE:
1845 case AV_CODEC_ID_PCM_U24LE:
1846 return 24;
1847 case AV_CODEC_ID_PCM_S32BE:
1848 case AV_CODEC_ID_PCM_S32LE:
1849 case AV_CODEC_ID_PCM_S32LE_PLANAR:
1850 case AV_CODEC_ID_PCM_U32BE:
1851 case AV_CODEC_ID_PCM_U32LE:
1852 case AV_CODEC_ID_PCM_F32BE:
1853 case AV_CODEC_ID_PCM_F32LE:
1854 return 32;
1855 case AV_CODEC_ID_PCM_F64BE:
1856 case AV_CODEC_ID_PCM_F64LE:
1857 return 64;
1858 default:
1859 return 0;
1860 }
1861 }
1862
1863 int av_get_bits_per_sample(enum AVCodecID codec_id)
1864 {
1865 switch (codec_id) {
1866 case AV_CODEC_ID_ADPCM_SBPRO_2:
1867 return 2;
1868 case AV_CODEC_ID_ADPCM_SBPRO_3:
1869 return 3;
1870 case AV_CODEC_ID_ADPCM_SBPRO_4:
1871 case AV_CODEC_ID_ADPCM_IMA_WAV:
1872 case AV_CODEC_ID_ADPCM_IMA_QT:
1873 case AV_CODEC_ID_ADPCM_SWF:
1874 case AV_CODEC_ID_ADPCM_MS:
1875 return 4;
1876 default:
1877 return av_get_exact_bits_per_sample(codec_id);
1878 }
1879 }
1880
1881 int av_get_audio_frame_duration(AVCodecContext *avctx, int frame_bytes)
1882 {
1883 int id, sr, ch, ba, tag, bps;
1884
1885 id = avctx->codec_id;
1886 sr = avctx->sample_rate;
1887 ch = avctx->channels;
1888 ba = avctx->block_align;
1889 tag = avctx->codec_tag;
1890 bps = av_get_exact_bits_per_sample(avctx->codec_id);
1891
1892 /* codecs with an exact constant bits per sample */
1893 if (bps > 0 && ch > 0 && frame_bytes > 0)
1894 return (frame_bytes * 8) / (bps * ch);
1895 bps = avctx->bits_per_coded_sample;
1896
1897 /* codecs with a fixed packet duration */
1898 switch (id) {
1899 case AV_CODEC_ID_ADPCM_ADX: return 32;
1900 case AV_CODEC_ID_ADPCM_IMA_QT: return 64;
1901 case AV_CODEC_ID_ADPCM_EA_XAS: return 128;
1902 case AV_CODEC_ID_AMR_NB:
1903 case AV_CODEC_ID_GSM:
1904 case AV_CODEC_ID_QCELP:
1905 case AV_CODEC_ID_RA_144:
1906 case AV_CODEC_ID_RA_288: return 160;
1907 case AV_CODEC_ID_IMC: return 256;
1908 case AV_CODEC_ID_AMR_WB:
1909 case AV_CODEC_ID_GSM_MS: return 320;
1910 case AV_CODEC_ID_MP1: return 384;
1911 case AV_CODEC_ID_ATRAC1: return 512;
1912 case AV_CODEC_ID_ATRAC3: return 1024;
1913 case AV_CODEC_ID_MP2:
1914 case AV_CODEC_ID_MUSEPACK7: return 1152;
1915 case AV_CODEC_ID_AC3: return 1536;
1916 }
1917
1918 if (sr > 0) {
1919 /* calc from sample rate */
1920 if (id == AV_CODEC_ID_TTA)
1921 return 256 * sr / 245;
1922
1923 if (ch > 0) {
1924 /* calc from sample rate and channels */
1925 if (id == AV_CODEC_ID_BINKAUDIO_DCT)
1926 return (480 << (sr / 22050)) / ch;
1927 }
1928 }
1929
1930 if (ba > 0) {
1931 /* calc from block_align */
1932 if (id == AV_CODEC_ID_SIPR) {
1933 switch (ba) {
1934 case 20: return 160;
1935 case 19: return 144;
1936 case 29: return 288;
1937 case 37: return 480;
1938 }
1939 } else if (id == AV_CODEC_ID_ILBC) {
1940 switch (ba) {
1941 case 38: return 160;
1942 case 50: return 240;
1943 }
1944 }
1945 }
1946
1947 if (frame_bytes > 0) {
1948 /* calc from frame_bytes only */
1949 if (id == AV_CODEC_ID_TRUESPEECH)
1950 return 240 * (frame_bytes / 32);
1951 if (id == AV_CODEC_ID_NELLYMOSER)
1952 return 256 * (frame_bytes / 64);
1953
1954 if (bps > 0) {
1955 /* calc from frame_bytes and bits_per_coded_sample */
1956 if (id == AV_CODEC_ID_ADPCM_G726)
1957 return frame_bytes * 8 / bps;
1958 }
1959
1960 if (ch > 0) {
1961 /* calc from frame_bytes and channels */
1962 switch (id) {
1963 case AV_CODEC_ID_ADPCM_4XM:
1964 case AV_CODEC_ID_ADPCM_IMA_ISS:
1965 return (frame_bytes - 4 * ch) * 2 / ch;
1966 case AV_CODEC_ID_ADPCM_IMA_SMJPEG:
1967 return (frame_bytes - 4) * 2 / ch;
1968 case AV_CODEC_ID_ADPCM_IMA_AMV:
1969 return (frame_bytes - 8) * 2 / ch;
1970 case AV_CODEC_ID_ADPCM_XA:
1971 return (frame_bytes / 128) * 224 / ch;
1972 case AV_CODEC_ID_INTERPLAY_DPCM:
1973 return (frame_bytes - 6 - ch) / ch;
1974 case AV_CODEC_ID_ROQ_DPCM:
1975 return (frame_bytes - 8) / ch;
1976 case AV_CODEC_ID_XAN_DPCM:
1977 return (frame_bytes - 2 * ch) / ch;
1978 case AV_CODEC_ID_MACE3:
1979 return 3 * frame_bytes / ch;
1980 case AV_CODEC_ID_MACE6:
1981 return 6 * frame_bytes / ch;
1982 case AV_CODEC_ID_PCM_LXF:
1983 return 2 * (frame_bytes / (5 * ch));
1984 }
1985
1986 if (tag) {
1987 /* calc from frame_bytes, channels, and codec_tag */
1988 if (id == AV_CODEC_ID_SOL_DPCM) {
1989 if (tag == 3)
1990 return frame_bytes / ch;
1991 else
1992 return frame_bytes * 2 / ch;
1993 }
1994 }
1995
1996 if (ba > 0) {
1997 /* calc from frame_bytes, channels, and block_align */
1998 int blocks = frame_bytes / ba;
1999 switch (avctx->codec_id) {
2000 case AV_CODEC_ID_ADPCM_IMA_WAV:
2001 return blocks * (1 + (ba - 4 * ch) / (4 * ch) * 8);
2002 case AV_CODEC_ID_ADPCM_IMA_DK3:
2003 return blocks * (((ba - 16) * 2 / 3 * 4) / ch);
2004 case AV_CODEC_ID_ADPCM_IMA_DK4:
2005 return blocks * (1 + (ba - 4 * ch) * 2 / ch);
2006 case AV_CODEC_ID_ADPCM_MS:
2007 return blocks * (2 + (ba - 7 * ch) * 2 / ch);
2008 }
2009 }
2010
2011 if (bps > 0) {
2012 /* calc from frame_bytes, channels, and bits_per_coded_sample */
2013 switch (avctx->codec_id) {
2014 case AV_CODEC_ID_PCM_DVD:
2015 return 2 * (frame_bytes / ((bps * 2 / 8) * ch));
2016 case AV_CODEC_ID_PCM_BLURAY:
2017 return frame_bytes / ((FFALIGN(ch, 2) * bps) / 8);
2018 case AV_CODEC_ID_S302M:
2019 return 2 * (frame_bytes / ((bps + 4) / 4)) / ch;
2020 }
2021 }
2022 }
2023 }
2024
2025 return 0;
2026 }
2027
2028 #if !HAVE_THREADS
2029 int ff_thread_init(AVCodecContext *s)
2030 {
2031 return -1;
2032 }
2033
2034 #endif
2035
2036 unsigned int av_xiphlacing(unsigned char *s, unsigned int v)
2037 {
2038 unsigned int n = 0;
2039
2040 while (v >= 0xff) {
2041 *s++ = 0xff;
2042 v -= 0xff;
2043 n++;
2044 }
2045 *s = v;
2046 n++;
2047 return n;
2048 }
2049
2050 int ff_match_2uint16(const uint16_t(*tab)[2], int size, int a, int b)
2051 {
2052 int i;
2053 for (i = 0; i < size && !(tab[i][0] == a && tab[i][1] == b); i++) ;
2054 return i;
2055 }
2056
2057 #if FF_API_MISSING_SAMPLE
2058 FF_DISABLE_DEPRECATION_WARNINGS
2059 void av_log_missing_feature(void *avc, const char *feature, int want_sample)
2060 {
2061 av_log(avc, AV_LOG_WARNING, "%s is not implemented. Update your Libav "
2062 "version to the newest one from Git. If the problem still "
2063 "occurs, it means that your file has a feature which has not "
2064 "been implemented.\n", feature);
2065 if(want_sample)
2066 av_log_ask_for_sample(avc, NULL);
2067 }
2068
2069 void av_log_ask_for_sample(void *avc, const char *msg, ...)
2070 {
2071 va_list argument_list;
2072
2073 va_start(argument_list, msg);
2074
2075 if (msg)
2076 av_vlog(avc, AV_LOG_WARNING, msg, argument_list);
2077 av_log(avc, AV_LOG_WARNING, "If you want to help, upload a sample "
2078 "of this file to ftp://upload.libav.org/incoming/ "
2079 "and contact the libav-devel mailing list.\n");
2080
2081 va_end(argument_list);
2082 }
2083 FF_ENABLE_DEPRECATION_WARNINGS
2084 #endif /* FF_API_MISSING_SAMPLE */
2085
2086 static AVHWAccel *first_hwaccel = NULL;
2087
2088 void av_register_hwaccel(AVHWAccel *hwaccel)
2089 {
2090 AVHWAccel **p = &first_hwaccel;
2091 while (*p)
2092 p = &(*p)->next;
2093 *p = hwaccel;
2094 hwaccel->next = NULL;
2095 }
2096
2097 AVHWAccel *av_hwaccel_next(AVHWAccel *hwaccel)
2098 {
2099 return hwaccel ? hwaccel->next : first_hwaccel;
2100 }
2101
2102 AVHWAccel *ff_find_hwaccel(enum AVCodecID codec_id, enum AVPixelFormat pix_fmt)
2103 {
2104 AVHWAccel *hwaccel = NULL;
2105
2106 while ((hwaccel = av_hwaccel_next(hwaccel)))
2107 if (hwaccel->id == codec_id
2108 && hwaccel->pix_fmt == pix_fmt)
2109 return hwaccel;
2110 return NULL;
2111 }
2112
2113 int av_lockmgr_register(int (*cb)(void **mutex, enum AVLockOp op))
2114 {
2115 if (lockmgr_cb) {
2116 if (lockmgr_cb(&codec_mutex, AV_LOCK_DESTROY))
2117 return -1;
2118 if (lockmgr_cb(&avformat_mutex, AV_LOCK_DESTROY))
2119 return -1;
2120 }
2121
2122 lockmgr_cb = cb;
2123
2124 if (lockmgr_cb) {
2125 if (lockmgr_cb(&codec_mutex, AV_LOCK_CREATE))
2126 return -1;
2127 if (lockmgr_cb(&avformat_mutex, AV_LOCK_CREATE))
2128 return -1;
2129 }
2130 return 0;
2131 }
2132
2133 int avpriv_lock_avformat(void)
2134 {
2135 if (lockmgr_cb) {
2136 if ((*lockmgr_cb)(&avformat_mutex, AV_LOCK_OBTAIN))
2137 return -1;
2138 }
2139 return 0;
2140 }
2141
2142 int avpriv_unlock_avformat(void)
2143 {
2144 if (lockmgr_cb) {
2145 if ((*lockmgr_cb)(&avformat_mutex, AV_LOCK_RELEASE))
2146 return -1;
2147 }
2148 return 0;
2149 }
2150
2151 unsigned int avpriv_toupper4(unsigned int x)
2152 {
2153 return av_toupper(x & 0xFF) +
2154 (av_toupper((x >> 8) & 0xFF) << 8) +
2155 (av_toupper((x >> 16) & 0xFF) << 16) +
2156 (av_toupper((x >> 24) & 0xFF) << 24);
2157 }
2158
2159 int ff_thread_ref_frame(ThreadFrame *dst, ThreadFrame *src)
2160 {
2161 int ret;
2162
2163 dst->owner = src->owner;
2164
2165 ret = av_frame_ref(dst->f, src->f);
2166 if (ret < 0)
2167 return ret;
2168
2169 if (src->progress &&
2170 !(dst->progress = av_buffer_ref(src->progress))) {
2171 ff_thread_release_buffer(dst->owner, dst);
2172 return AVERROR(ENOMEM);
2173 }
2174
2175 return 0;
2176 }
2177
2178 #if !HAVE_THREADS
2179
2180 int ff_thread_get_buffer(AVCodecContext *avctx, ThreadFrame *f, int flags)
2181 {
2182 f->owner = avctx;
2183 return ff_get_buffer(avctx, f->f, flags);
2184 }
2185
2186 void ff_thread_release_buffer(AVCodecContext *avctx, ThreadFrame *f)
2187 {
2188 av_frame_unref(f->f);
2189 }
2190
2191 void ff_thread_finish_setup(AVCodecContext *avctx)
2192 {
2193 }
2194
2195 void ff_thread_report_progress(ThreadFrame *f, int progress, int field)
2196 {
2197 }
2198
2199 void ff_thread_await_progress(ThreadFrame *f, int progress, int field)
2200 {
2201 }
2202
2203 #endif
2204
2205 enum AVMediaType avcodec_get_type(enum AVCodecID codec_id)
2206 {
2207 if (codec_id <= AV_CODEC_ID_NONE)
2208 return AVMEDIA_TYPE_UNKNOWN;
2209 else if (codec_id < AV_CODEC_ID_FIRST_AUDIO)
2210 return AVMEDIA_TYPE_VIDEO;
2211 else if (codec_id < AV_CODEC_ID_FIRST_SUBTITLE)
2212 return AVMEDIA_TYPE_AUDIO;
2213 else if (codec_id < AV_CODEC_ID_FIRST_UNKNOWN)
2214 return AVMEDIA_TYPE_SUBTITLE;
2215
2216 return AVMEDIA_TYPE_UNKNOWN;
2217 }
2218
2219 int avcodec_is_open(AVCodecContext *s)
2220 {
2221 return !!s->internal;
2222 }
2223
2224 const uint8_t *avpriv_find_start_code(const uint8_t *restrict p,
2225 const uint8_t *end,
2226 uint32_t * restrict state)
2227 {
2228 int i;
2229
2230 assert(p <= end);
2231 if (p >= end)
2232 return end;
2233
2234 for (i = 0; i < 3; i++) {
2235 uint32_t tmp = *state << 8;
2236 *state = tmp + *(p++);
2237 if (tmp == 0x100 || p == end)
2238 return p;
2239 }
2240
2241 while (p < end) {
2242 if (p[-1] > 1 ) p += 3;
2243 else if (p[-2] ) p += 2;
2244 else if (p[-3]|(p[-1]-1)) p++;
2245 else {
2246 p++;
2247 break;
2248 }
2249 }
2250
2251 p = FFMIN(p, end) - 4;
2252 *state = AV_RB32(p);
2253
2254 return p + 4;
2255 }