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lavc: add stream-global packet side data
[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 "libavutil/opt.h"
43 #include "me_cmp.h"
44 #include "mpegvideo.h"
45 #include "thread.h"
46 #include "internal.h"
47 #include "bytestream.h"
48 #include "version.h"
49 #include <stdlib.h>
50 #include <stdarg.h>
51 #include <limits.h>
52 #include <float.h>
53
54 static int volatile entangled_thread_counter = 0;
55 static int (*lockmgr_cb)(void **mutex, enum AVLockOp op);
56 static void *codec_mutex;
57 static void *avformat_mutex;
58
59 void av_fast_padded_malloc(void *ptr, unsigned int *size, size_t min_size)
60 {
61 void **p = ptr;
62 if (min_size > SIZE_MAX - AV_INPUT_BUFFER_PADDING_SIZE) {
63 av_freep(p);
64 *size = 0;
65 return;
66 }
67 av_fast_malloc(p, size, min_size + AV_INPUT_BUFFER_PADDING_SIZE);
68 if (*size)
69 memset((uint8_t *)*p + min_size, 0, AV_INPUT_BUFFER_PADDING_SIZE);
70 }
71
72 /* encoder management */
73 static AVCodec *first_avcodec = NULL;
74
75 AVCodec *av_codec_next(const AVCodec *c)
76 {
77 if (c)
78 return c->next;
79 else
80 return first_avcodec;
81 }
82
83 static av_cold void avcodec_init(void)
84 {
85 static int initialized = 0;
86
87 if (initialized != 0)
88 return;
89 initialized = 1;
90
91 if (CONFIG_ME_CMP)
92 ff_me_cmp_init_static();
93 }
94
95 int av_codec_is_encoder(const AVCodec *codec)
96 {
97 return codec && (codec->encode_sub || codec->encode2);
98 }
99
100 int av_codec_is_decoder(const AVCodec *codec)
101 {
102 return codec && codec->decode;
103 }
104
105 av_cold void avcodec_register(AVCodec *codec)
106 {
107 AVCodec **p;
108 avcodec_init();
109 p = &first_avcodec;
110 while (*p)
111 p = &(*p)->next;
112 *p = codec;
113 codec->next = NULL;
114
115 if (codec->init_static_data)
116 codec->init_static_data(codec);
117 }
118
119 #if FF_API_EMU_EDGE
120 unsigned avcodec_get_edge_width(void)
121 {
122 return EDGE_WIDTH;
123 }
124 #endif
125
126 #if FF_API_SET_DIMENSIONS
127 void avcodec_set_dimensions(AVCodecContext *s, int width, int height)
128 {
129 ff_set_dimensions(s, width, height);
130 }
131 #endif
132
133 int ff_set_dimensions(AVCodecContext *s, int width, int height)
134 {
135 int ret = av_image_check_size(width, height, 0, s);
136
137 if (ret < 0)
138 width = height = 0;
139 s->width = s->coded_width = width;
140 s->height = s->coded_height = height;
141
142 return ret;
143 }
144
145 int ff_set_sar(AVCodecContext *avctx, AVRational sar)
146 {
147 int ret = av_image_check_sar(avctx->width, avctx->height, sar);
148
149 if (ret < 0) {
150 av_log(avctx, AV_LOG_WARNING, "ignoring invalid SAR: %d/%d\n",
151 sar.num, sar.den);
152 avctx->sample_aspect_ratio = (AVRational){ 0, 1 };
153 return ret;
154 } else {
155 avctx->sample_aspect_ratio = sar;
156 }
157 return 0;
158 }
159
160 int ff_side_data_update_matrix_encoding(AVFrame *frame,
161 enum AVMatrixEncoding matrix_encoding)
162 {
163 AVFrameSideData *side_data;
164 enum AVMatrixEncoding *data;
165
166 side_data = av_frame_get_side_data(frame, AV_FRAME_DATA_MATRIXENCODING);
167 if (!side_data)
168 side_data = av_frame_new_side_data(frame, AV_FRAME_DATA_MATRIXENCODING,
169 sizeof(enum AVMatrixEncoding));
170
171 if (!side_data)
172 return AVERROR(ENOMEM);
173
174 data = (enum AVMatrixEncoding*)side_data->data;
175 *data = matrix_encoding;
176
177 return 0;
178 }
179
180 #if HAVE_SIMD_ALIGN_16
181 # define STRIDE_ALIGN 16
182 #else
183 # define STRIDE_ALIGN 8
184 #endif
185
186 void avcodec_align_dimensions2(AVCodecContext *s, int *width, int *height,
187 int linesize_align[AV_NUM_DATA_POINTERS])
188 {
189 int i;
190 int w_align = 1;
191 int h_align = 1;
192
193 switch (s->pix_fmt) {
194 case AV_PIX_FMT_YUV420P:
195 case AV_PIX_FMT_YUYV422:
196 case AV_PIX_FMT_YVYU422:
197 case AV_PIX_FMT_UYVY422:
198 case AV_PIX_FMT_YUV422P:
199 case AV_PIX_FMT_YUV440P:
200 case AV_PIX_FMT_YUV444P:
201 case AV_PIX_FMT_GBRP:
202 case AV_PIX_FMT_GBRAP:
203 case AV_PIX_FMT_GRAY8:
204 case AV_PIX_FMT_GRAY16BE:
205 case AV_PIX_FMT_GRAY16LE:
206 case AV_PIX_FMT_YUVJ420P:
207 case AV_PIX_FMT_YUVJ422P:
208 case AV_PIX_FMT_YUVJ440P:
209 case AV_PIX_FMT_YUVJ444P:
210 case AV_PIX_FMT_YUVA420P:
211 case AV_PIX_FMT_YUVA422P:
212 case AV_PIX_FMT_YUVA444P:
213 case AV_PIX_FMT_YUV420P9LE:
214 case AV_PIX_FMT_YUV420P9BE:
215 case AV_PIX_FMT_YUV420P10LE:
216 case AV_PIX_FMT_YUV420P10BE:
217 case AV_PIX_FMT_YUV422P9LE:
218 case AV_PIX_FMT_YUV422P9BE:
219 case AV_PIX_FMT_YUV422P10LE:
220 case AV_PIX_FMT_YUV422P10BE:
221 case AV_PIX_FMT_YUVA422P10LE:
222 case AV_PIX_FMT_YUVA422P10BE:
223 case AV_PIX_FMT_YUV444P9LE:
224 case AV_PIX_FMT_YUV444P9BE:
225 case AV_PIX_FMT_YUV444P10LE:
226 case AV_PIX_FMT_YUV444P10BE:
227 case AV_PIX_FMT_YUVA444P10LE:
228 case AV_PIX_FMT_YUVA444P10BE:
229 case AV_PIX_FMT_GBRP9LE:
230 case AV_PIX_FMT_GBRP9BE:
231 case AV_PIX_FMT_GBRP10LE:
232 case AV_PIX_FMT_GBRP10BE:
233 w_align = 16; //FIXME assume 16 pixel per macroblock
234 h_align = 16 * 2; // interlaced needs 2 macroblocks height
235 break;
236 case AV_PIX_FMT_YUV411P:
237 case AV_PIX_FMT_UYYVYY411:
238 w_align = 32;
239 h_align = 8;
240 break;
241 case AV_PIX_FMT_YUV410P:
242 if (s->codec_id == AV_CODEC_ID_SVQ1) {
243 w_align = 64;
244 h_align = 64;
245 }
246 case AV_PIX_FMT_RGB555:
247 if (s->codec_id == AV_CODEC_ID_RPZA) {
248 w_align = 4;
249 h_align = 4;
250 }
251 case AV_PIX_FMT_PAL8:
252 case AV_PIX_FMT_BGR8:
253 case AV_PIX_FMT_RGB8:
254 if (s->codec_id == AV_CODEC_ID_SMC) {
255 w_align = 4;
256 h_align = 4;
257 }
258 break;
259 case AV_PIX_FMT_BGR24:
260 if ((s->codec_id == AV_CODEC_ID_MSZH) ||
261 (s->codec_id == AV_CODEC_ID_ZLIB)) {
262 w_align = 4;
263 h_align = 4;
264 }
265 break;
266 default:
267 w_align = 1;
268 h_align = 1;
269 break;
270 }
271
272 *width = FFALIGN(*width, w_align);
273 *height = FFALIGN(*height, h_align);
274 if (s->codec_id == AV_CODEC_ID_H264)
275 // some of the optimized chroma MC reads one line too much
276 *height += 2;
277
278 for (i = 0; i < 4; i++)
279 linesize_align[i] = STRIDE_ALIGN;
280 }
281
282 void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height)
283 {
284 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(s->pix_fmt);
285 int chroma_shift = desc->log2_chroma_w;
286 int linesize_align[AV_NUM_DATA_POINTERS];
287 int align;
288
289 avcodec_align_dimensions2(s, width, height, linesize_align);
290 align = FFMAX(linesize_align[0], linesize_align[3]);
291 linesize_align[1] <<= chroma_shift;
292 linesize_align[2] <<= chroma_shift;
293 align = FFMAX3(align, linesize_align[1], linesize_align[2]);
294 *width = FFALIGN(*width, align);
295 }
296
297 int avcodec_fill_audio_frame(AVFrame *frame, int nb_channels,
298 enum AVSampleFormat sample_fmt, const uint8_t *buf,
299 int buf_size, int align)
300 {
301 int ch, planar, needed_size, ret = 0;
302
303 needed_size = av_samples_get_buffer_size(NULL, nb_channels,
304 frame->nb_samples, sample_fmt,
305 align);
306 if (buf_size < needed_size)
307 return AVERROR(EINVAL);
308
309 planar = av_sample_fmt_is_planar(sample_fmt);
310 if (planar && nb_channels > AV_NUM_DATA_POINTERS) {
311 if (!(frame->extended_data = av_mallocz(nb_channels *
312 sizeof(*frame->extended_data))))
313 return AVERROR(ENOMEM);
314 } else {
315 frame->extended_data = frame->data;
316 }
317
318 if ((ret = av_samples_fill_arrays(frame->extended_data, &frame->linesize[0],
319 buf, nb_channels, frame->nb_samples,
320 sample_fmt, align)) < 0) {
321 if (frame->extended_data != frame->data)
322 av_free(frame->extended_data);
323 return ret;
324 }
325 if (frame->extended_data != frame->data) {
326 for (ch = 0; ch < AV_NUM_DATA_POINTERS; ch++)
327 frame->data[ch] = frame->extended_data[ch];
328 }
329
330 return ret;
331 }
332
333 static int update_frame_pool(AVCodecContext *avctx, AVFrame *frame)
334 {
335 FramePool *pool = avctx->internal->pool;
336 int i, ret;
337
338 switch (avctx->codec_type) {
339 case AVMEDIA_TYPE_VIDEO: {
340 uint8_t *data[4];
341 int linesize[4];
342 int size[4] = { 0 };
343 int w = frame->width;
344 int h = frame->height;
345 int tmpsize, unaligned;
346
347 if (pool->format == frame->format &&
348 pool->width == frame->width && pool->height == frame->height)
349 return 0;
350
351 avcodec_align_dimensions2(avctx, &w, &h, pool->stride_align);
352
353 do {
354 // NOTE: do not align linesizes individually, this breaks e.g. assumptions
355 // that linesize[0] == 2*linesize[1] in the MPEG-encoder for 4:2:2
356 av_image_fill_linesizes(linesize, avctx->pix_fmt, w);
357 // increase alignment of w for next try (rhs gives the lowest bit set in w)
358 w += w & ~(w - 1);
359
360 unaligned = 0;
361 for (i = 0; i < 4; i++)
362 unaligned |= linesize[i] % pool->stride_align[i];
363 } while (unaligned);
364
365 tmpsize = av_image_fill_pointers(data, avctx->pix_fmt, h,
366 NULL, linesize);
367 if (tmpsize < 0)
368 return -1;
369
370 for (i = 0; i < 3 && data[i + 1]; i++)
371 size[i] = data[i + 1] - data[i];
372 size[i] = tmpsize - (data[i] - data[0]);
373
374 for (i = 0; i < 4; i++) {
375 av_buffer_pool_uninit(&pool->pools[i]);
376 pool->linesize[i] = linesize[i];
377 if (size[i]) {
378 pool->pools[i] = av_buffer_pool_init(size[i] + 16, NULL);
379 if (!pool->pools[i]) {
380 ret = AVERROR(ENOMEM);
381 goto fail;
382 }
383 }
384 }
385 pool->format = frame->format;
386 pool->width = frame->width;
387 pool->height = frame->height;
388
389 break;
390 }
391 case AVMEDIA_TYPE_AUDIO: {
392 int ch = av_get_channel_layout_nb_channels(frame->channel_layout);
393 int planar = av_sample_fmt_is_planar(frame->format);
394 int planes = planar ? ch : 1;
395
396 if (pool->format == frame->format && pool->planes == planes &&
397 pool->channels == ch && frame->nb_samples == pool->samples)
398 return 0;
399
400 av_buffer_pool_uninit(&pool->pools[0]);
401 ret = av_samples_get_buffer_size(&pool->linesize[0], ch,
402 frame->nb_samples, frame->format, 0);
403 if (ret < 0)
404 goto fail;
405
406 pool->pools[0] = av_buffer_pool_init(pool->linesize[0], NULL);
407 if (!pool->pools[0]) {
408 ret = AVERROR(ENOMEM);
409 goto fail;
410 }
411
412 pool->format = frame->format;
413 pool->planes = planes;
414 pool->channels = ch;
415 pool->samples = frame->nb_samples;
416 break;
417 }
418 default: av_assert0(0);
419 }
420 return 0;
421 fail:
422 for (i = 0; i < 4; i++)
423 av_buffer_pool_uninit(&pool->pools[i]);
424 pool->format = -1;
425 pool->planes = pool->channels = pool->samples = 0;
426 pool->width = pool->height = 0;
427 return ret;
428 }
429
430 static int audio_get_buffer(AVCodecContext *avctx, AVFrame *frame)
431 {
432 FramePool *pool = avctx->internal->pool;
433 int planes = pool->planes;
434 int i;
435
436 frame->linesize[0] = pool->linesize[0];
437
438 if (planes > AV_NUM_DATA_POINTERS) {
439 frame->extended_data = av_mallocz(planes * sizeof(*frame->extended_data));
440 frame->nb_extended_buf = planes - AV_NUM_DATA_POINTERS;
441 frame->extended_buf = av_mallocz(frame->nb_extended_buf *
442 sizeof(*frame->extended_buf));
443 if (!frame->extended_data || !frame->extended_buf) {
444 av_freep(&frame->extended_data);
445 av_freep(&frame->extended_buf);
446 return AVERROR(ENOMEM);
447 }
448 } else
449 frame->extended_data = frame->data;
450
451 for (i = 0; i < FFMIN(planes, AV_NUM_DATA_POINTERS); i++) {
452 frame->buf[i] = av_buffer_pool_get(pool->pools[0]);
453 if (!frame->buf[i])
454 goto fail;
455 frame->extended_data[i] = frame->data[i] = frame->buf[i]->data;
456 }
457 for (i = 0; i < frame->nb_extended_buf; i++) {
458 frame->extended_buf[i] = av_buffer_pool_get(pool->pools[0]);
459 if (!frame->extended_buf[i])
460 goto fail;
461 frame->extended_data[i + AV_NUM_DATA_POINTERS] = frame->extended_buf[i]->data;
462 }
463
464 if (avctx->debug & FF_DEBUG_BUFFERS)
465 av_log(avctx, AV_LOG_DEBUG, "default_get_buffer called on frame %p", frame);
466
467 return 0;
468 fail:
469 av_frame_unref(frame);
470 return AVERROR(ENOMEM);
471 }
472
473 static int video_get_buffer(AVCodecContext *s, AVFrame *pic)
474 {
475 FramePool *pool = s->internal->pool;
476 int i;
477
478 if (pic->data[0]) {
479 av_log(s, AV_LOG_ERROR, "pic->data[0]!=NULL in avcodec_default_get_buffer\n");
480 return -1;
481 }
482
483 memset(pic->data, 0, sizeof(pic->data));
484 pic->extended_data = pic->data;
485
486 for (i = 0; i < 4 && pool->pools[i]; i++) {
487 pic->linesize[i] = pool->linesize[i];
488
489 pic->buf[i] = av_buffer_pool_get(pool->pools[i]);
490 if (!pic->buf[i])
491 goto fail;
492
493 pic->data[i] = pic->buf[i]->data;
494 }
495 for (; i < AV_NUM_DATA_POINTERS; i++) {
496 pic->data[i] = NULL;
497 pic->linesize[i] = 0;
498 }
499 if (pic->data[1] && !pic->data[2])
500 avpriv_set_systematic_pal2((uint32_t *)pic->data[1], s->pix_fmt);
501
502 if (s->debug & FF_DEBUG_BUFFERS)
503 av_log(s, AV_LOG_DEBUG, "default_get_buffer called on pic %p\n", pic);
504
505 return 0;
506 fail:
507 av_frame_unref(pic);
508 return AVERROR(ENOMEM);
509 }
510
511 int avcodec_default_get_buffer2(AVCodecContext *avctx, AVFrame *frame, int flags)
512 {
513 int ret;
514
515 if ((ret = update_frame_pool(avctx, frame)) < 0)
516 return ret;
517
518 switch (avctx->codec_type) {
519 case AVMEDIA_TYPE_VIDEO:
520 return video_get_buffer(avctx, frame);
521 case AVMEDIA_TYPE_AUDIO:
522 return audio_get_buffer(avctx, frame);
523 default:
524 return -1;
525 }
526 }
527
528 int ff_decode_frame_props(AVCodecContext *avctx, AVFrame *frame)
529 {
530 AVPacket *pkt = avctx->internal->pkt;
531 int i;
532 struct {
533 enum AVPacketSideDataType packet;
534 enum AVFrameSideDataType frame;
535 } sd[] = {
536 { AV_PKT_DATA_REPLAYGAIN , AV_FRAME_DATA_REPLAYGAIN },
537 { AV_PKT_DATA_DISPLAYMATRIX, AV_FRAME_DATA_DISPLAYMATRIX },
538 { AV_PKT_DATA_STEREO3D, AV_FRAME_DATA_STEREO3D },
539 { AV_PKT_DATA_AUDIO_SERVICE_TYPE, AV_FRAME_DATA_AUDIO_SERVICE_TYPE },
540 };
541
542 frame->color_primaries = avctx->color_primaries;
543 frame->color_trc = avctx->color_trc;
544 frame->colorspace = avctx->colorspace;
545 frame->color_range = avctx->color_range;
546 frame->chroma_location = avctx->chroma_sample_location;
547
548 frame->reordered_opaque = avctx->reordered_opaque;
549 if (!pkt) {
550 frame->pkt_pts = AV_NOPTS_VALUE;
551 return 0;
552 }
553
554 frame->pkt_pts = pkt->pts;
555
556 for (i = 0; i < FF_ARRAY_ELEMS(sd); i++) {
557 int size;
558 uint8_t *packet_sd = av_packet_get_side_data(pkt, sd[i].packet, &size);
559 if (packet_sd) {
560 AVFrameSideData *frame_sd = av_frame_new_side_data(frame,
561 sd[i].frame,
562 size);
563 if (!frame_sd)
564 return AVERROR(ENOMEM);
565
566 memcpy(frame_sd->data, packet_sd, size);
567 }
568 }
569
570 return 0;
571 }
572
573 int ff_get_buffer(AVCodecContext *avctx, AVFrame *frame, int flags)
574 {
575 const AVHWAccel *hwaccel = avctx->hwaccel;
576 int override_dimensions = 1;
577 int ret;
578
579 switch (avctx->codec_type) {
580 case AVMEDIA_TYPE_VIDEO:
581 if (frame->width <= 0 || frame->height <= 0) {
582 frame->width = FFMAX(avctx->width, avctx->coded_width);
583 frame->height = FFMAX(avctx->height, avctx->coded_height);
584 override_dimensions = 0;
585 }
586 if (frame->format < 0)
587 frame->format = avctx->pix_fmt;
588 if (!frame->sample_aspect_ratio.num)
589 frame->sample_aspect_ratio = avctx->sample_aspect_ratio;
590
591 if (av_image_check_sar(frame->width, frame->height,
592 frame->sample_aspect_ratio) < 0) {
593 av_log(avctx, AV_LOG_WARNING, "ignoring invalid SAR: %u/%u\n",
594 frame->sample_aspect_ratio.num,
595 frame->sample_aspect_ratio.den);
596 frame->sample_aspect_ratio = (AVRational){ 0, 1 };
597 }
598
599 if ((ret = av_image_check_size(avctx->width, avctx->height, 0, avctx)) < 0)
600 return ret;
601 break;
602 case AVMEDIA_TYPE_AUDIO:
603 if (!frame->sample_rate)
604 frame->sample_rate = avctx->sample_rate;
605 if (frame->format < 0)
606 frame->format = avctx->sample_fmt;
607 if (!frame->channel_layout) {
608 if (avctx->channel_layout) {
609 if (av_get_channel_layout_nb_channels(avctx->channel_layout) !=
610 avctx->channels) {
611 av_log(avctx, AV_LOG_ERROR, "Inconsistent channel "
612 "configuration.\n");
613 return AVERROR(EINVAL);
614 }
615
616 frame->channel_layout = avctx->channel_layout;
617 } else {
618 if (avctx->channels > FF_SANE_NB_CHANNELS) {
619 av_log(avctx, AV_LOG_ERROR, "Too many channels: %d.\n",
620 avctx->channels);
621 return AVERROR(ENOSYS);
622 }
623
624 frame->channel_layout = av_get_default_channel_layout(avctx->channels);
625 if (!frame->channel_layout)
626 frame->channel_layout = (1ULL << avctx->channels) - 1;
627 }
628 }
629 break;
630 default: return AVERROR(EINVAL);
631 }
632
633 ret = ff_decode_frame_props(avctx, frame);
634 if (ret < 0)
635 return ret;
636
637 if (hwaccel) {
638 if (hwaccel->alloc_frame) {
639 ret = hwaccel->alloc_frame(avctx, frame);
640 goto end;
641 }
642 } else
643 avctx->sw_pix_fmt = avctx->pix_fmt;
644
645 ret = avctx->get_buffer2(avctx, frame, flags);
646
647 end:
648 if (avctx->codec_type == AVMEDIA_TYPE_VIDEO && !override_dimensions) {
649 frame->width = avctx->width;
650 frame->height = avctx->height;
651 }
652
653 return ret;
654 }
655
656 int ff_reget_buffer(AVCodecContext *avctx, AVFrame *frame)
657 {
658 AVFrame *tmp;
659 int ret;
660
661 av_assert0(avctx->codec_type == AVMEDIA_TYPE_VIDEO);
662
663 if (!frame->data[0])
664 return ff_get_buffer(avctx, frame, AV_GET_BUFFER_FLAG_REF);
665
666 if (av_frame_is_writable(frame))
667 return ff_decode_frame_props(avctx, frame);
668
669 tmp = av_frame_alloc();
670 if (!tmp)
671 return AVERROR(ENOMEM);
672
673 av_frame_move_ref(tmp, frame);
674
675 ret = ff_get_buffer(avctx, frame, AV_GET_BUFFER_FLAG_REF);
676 if (ret < 0) {
677 av_frame_free(&tmp);
678 return ret;
679 }
680
681 av_frame_copy(frame, tmp);
682 av_frame_free(&tmp);
683
684 return 0;
685 }
686
687 int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2), void *arg, int *ret, int count, int size)
688 {
689 int i;
690
691 for (i = 0; i < count; i++) {
692 int r = func(c, (char *)arg + i * size);
693 if (ret)
694 ret[i] = r;
695 }
696 return 0;
697 }
698
699 int avcodec_default_execute2(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2, int jobnr, int threadnr), void *arg, int *ret, int count)
700 {
701 int i;
702
703 for (i = 0; i < count; i++) {
704 int r = func(c, arg, i, 0);
705 if (ret)
706 ret[i] = r;
707 }
708 return 0;
709 }
710
711 static int is_hwaccel_pix_fmt(enum AVPixelFormat pix_fmt)
712 {
713 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
714 return desc->flags & AV_PIX_FMT_FLAG_HWACCEL;
715 }
716
717 enum AVPixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum AVPixelFormat *fmt)
718 {
719 while (*fmt != AV_PIX_FMT_NONE && is_hwaccel_pix_fmt(*fmt))
720 ++fmt;
721 return fmt[0];
722 }
723
724 static AVHWAccel *find_hwaccel(enum AVCodecID codec_id,
725 enum AVPixelFormat pix_fmt)
726 {
727 AVHWAccel *hwaccel = NULL;
728
729 while ((hwaccel = av_hwaccel_next(hwaccel)))
730 if (hwaccel->id == codec_id
731 && hwaccel->pix_fmt == pix_fmt)
732 return hwaccel;
733 return NULL;
734 }
735
736 static int setup_hwaccel(AVCodecContext *avctx,
737 const enum AVPixelFormat fmt,
738 const char *name)
739 {
740 AVHWAccel *hwa = find_hwaccel(avctx->codec_id, fmt);
741 int ret = 0;
742
743 if (!hwa) {
744 av_log(avctx, AV_LOG_ERROR,
745 "Could not find an AVHWAccel for the pixel format: %s",
746 name);
747 return AVERROR(ENOENT);
748 }
749
750 if (hwa->priv_data_size) {
751 avctx->internal->hwaccel_priv_data = av_mallocz(hwa->priv_data_size);
752 if (!avctx->internal->hwaccel_priv_data)
753 return AVERROR(ENOMEM);
754 }
755
756 if (hwa->init) {
757 ret = hwa->init(avctx);
758 if (ret < 0) {
759 av_freep(&avctx->internal->hwaccel_priv_data);
760 return ret;
761 }
762 }
763
764 avctx->hwaccel = hwa;
765
766 return 0;
767 }
768
769 int ff_get_format(AVCodecContext *avctx, const enum AVPixelFormat *fmt)
770 {
771 const AVPixFmtDescriptor *desc;
772 enum AVPixelFormat *choices;
773 enum AVPixelFormat ret;
774 unsigned n = 0;
775
776 while (fmt[n] != AV_PIX_FMT_NONE)
777 ++n;
778
779 av_assert0(n >= 1);
780 avctx->sw_pix_fmt = fmt[n - 1];
781 av_assert2(!is_hwaccel_pix_fmt(avctx->sw_pix_fmt));
782
783 choices = av_malloc_array(n + 1, sizeof(*choices));
784 if (!choices)
785 return AV_PIX_FMT_NONE;
786
787 memcpy(choices, fmt, (n + 1) * sizeof(*choices));
788
789 for (;;) {
790 if (avctx->hwaccel && avctx->hwaccel->uninit)
791 avctx->hwaccel->uninit(avctx);
792 av_freep(&avctx->internal->hwaccel_priv_data);
793 avctx->hwaccel = NULL;
794
795 ret = avctx->get_format(avctx, choices);
796
797 desc = av_pix_fmt_desc_get(ret);
798 if (!desc) {
799 ret = AV_PIX_FMT_NONE;
800 break;
801 }
802
803 if (!(desc->flags & AV_PIX_FMT_FLAG_HWACCEL))
804 break;
805
806 if (!setup_hwaccel(avctx, ret, desc->name))
807 break;
808
809 /* Remove failed hwaccel from choices */
810 for (n = 0; choices[n] != ret; n++)
811 av_assert0(choices[n] != AV_PIX_FMT_NONE);
812
813 do
814 choices[n] = choices[n + 1];
815 while (choices[n++] != AV_PIX_FMT_NONE);
816 }
817
818 av_freep(&choices);
819 return ret;
820 }
821
822 int attribute_align_arg avcodec_open2(AVCodecContext *avctx, const AVCodec *codec, AVDictionary **options)
823 {
824 int ret = 0;
825 AVDictionary *tmp = NULL;
826
827 if (avcodec_is_open(avctx))
828 return 0;
829
830 if ((!codec && !avctx->codec)) {
831 av_log(avctx, AV_LOG_ERROR, "No codec provided to avcodec_open2().\n");
832 return AVERROR(EINVAL);
833 }
834 if ((codec && avctx->codec && codec != avctx->codec)) {
835 av_log(avctx, AV_LOG_ERROR, "This AVCodecContext was allocated for %s, "
836 "but %s passed to avcodec_open2().\n", avctx->codec->name, codec->name);
837 return AVERROR(EINVAL);
838 }
839 if (!codec)
840 codec = avctx->codec;
841
842 if (avctx->extradata_size < 0 || avctx->extradata_size >= FF_MAX_EXTRADATA_SIZE)
843 return AVERROR(EINVAL);
844
845 if (options)
846 av_dict_copy(&tmp, *options, 0);
847
848 /* If there is a user-supplied mutex locking routine, call it. */
849 if (!(codec->caps_internal & FF_CODEC_CAP_INIT_THREADSAFE) && codec->init) {
850 if (lockmgr_cb) {
851 if ((*lockmgr_cb)(&codec_mutex, AV_LOCK_OBTAIN))
852 return -1;
853 }
854
855 entangled_thread_counter++;
856 if (entangled_thread_counter != 1) {
857 av_log(avctx, AV_LOG_ERROR,
858 "Insufficient thread locking. At least %d threads are "
859 "calling avcodec_open2() at the same time right now.\n",
860 entangled_thread_counter);
861 ret = -1;
862 goto end;
863 }
864 }
865
866 avctx->internal = av_mallocz(sizeof(AVCodecInternal));
867 if (!avctx->internal) {
868 ret = AVERROR(ENOMEM);
869 goto end;
870 }
871
872 avctx->internal->pool = av_mallocz(sizeof(*avctx->internal->pool));
873 if (!avctx->internal->pool) {
874 ret = AVERROR(ENOMEM);
875 goto free_and_end;
876 }
877
878 avctx->internal->to_free = av_frame_alloc();
879 if (!avctx->internal->to_free) {
880 ret = AVERROR(ENOMEM);
881 goto free_and_end;
882 }
883
884 if (codec->priv_data_size > 0) {
885 if (!avctx->priv_data) {
886 avctx->priv_data = av_mallocz(codec->priv_data_size);
887 if (!avctx->priv_data) {
888 ret = AVERROR(ENOMEM);
889 goto end;
890 }
891 if (codec->priv_class) {
892 *(const AVClass **)avctx->priv_data = codec->priv_class;
893 av_opt_set_defaults(avctx->priv_data);
894 }
895 }
896 if (codec->priv_class && (ret = av_opt_set_dict(avctx->priv_data, &tmp)) < 0)
897 goto free_and_end;
898 } else {
899 avctx->priv_data = NULL;
900 }
901 if ((ret = av_opt_set_dict(avctx, &tmp)) < 0)
902 goto free_and_end;
903
904 if (avctx->coded_width && avctx->coded_height && !avctx->width && !avctx->height)
905 ret = ff_set_dimensions(avctx, avctx->coded_width, avctx->coded_height);
906 else if (avctx->width && avctx->height)
907 ret = ff_set_dimensions(avctx, avctx->width, avctx->height);
908 if (ret < 0)
909 goto free_and_end;
910
911 if ((avctx->coded_width || avctx->coded_height || avctx->width || avctx->height)
912 && ( av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx) < 0
913 || av_image_check_size(avctx->width, avctx->height, 0, avctx) < 0)) {
914 av_log(avctx, AV_LOG_WARNING, "ignoring invalid width/height values\n");
915 ff_set_dimensions(avctx, 0, 0);
916 }
917
918 if (avctx->width > 0 && avctx->height > 0) {
919 if (av_image_check_sar(avctx->width, avctx->height,
920 avctx->sample_aspect_ratio) < 0) {
921 av_log(avctx, AV_LOG_WARNING, "ignoring invalid SAR: %u/%u\n",
922 avctx->sample_aspect_ratio.num,
923 avctx->sample_aspect_ratio.den);
924 avctx->sample_aspect_ratio = (AVRational){ 0, 1 };
925 }
926 }
927
928 /* if the decoder init function was already called previously,
929 * free the already allocated subtitle_header before overwriting it */
930 if (av_codec_is_decoder(codec))
931 av_freep(&avctx->subtitle_header);
932
933 if (avctx->channels > FF_SANE_NB_CHANNELS) {
934 ret = AVERROR(EINVAL);
935 goto free_and_end;
936 }
937
938 avctx->codec = codec;
939 if ((avctx->codec_type == AVMEDIA_TYPE_UNKNOWN || avctx->codec_type == codec->type) &&
940 avctx->codec_id == AV_CODEC_ID_NONE) {
941 avctx->codec_type = codec->type;
942 avctx->codec_id = codec->id;
943 }
944 if (avctx->codec_id != codec->id || (avctx->codec_type != codec->type
945 && avctx->codec_type != AVMEDIA_TYPE_ATTACHMENT)) {
946 av_log(avctx, AV_LOG_ERROR, "codec type or id mismatches\n");
947 ret = AVERROR(EINVAL);
948 goto free_and_end;
949 }
950 avctx->frame_number = 0;
951
952 if ((avctx->codec->capabilities & AV_CODEC_CAP_EXPERIMENTAL) &&
953 avctx->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
954 ret = AVERROR_EXPERIMENTAL;
955 goto free_and_end;
956 }
957
958 if (avctx->codec_type == AVMEDIA_TYPE_AUDIO &&
959 (!avctx->time_base.num || !avctx->time_base.den)) {
960 avctx->time_base.num = 1;
961 avctx->time_base.den = avctx->sample_rate;
962 }
963
964 if (HAVE_THREADS) {
965 ret = ff_thread_init(avctx);
966 if (ret < 0) {
967 goto free_and_end;
968 }
969 }
970 if (!HAVE_THREADS && !(codec->capabilities & AV_CODEC_CAP_AUTO_THREADS))
971 avctx->thread_count = 1;
972
973 if (av_codec_is_encoder(avctx->codec)) {
974 int i;
975 #if FF_API_CODED_FRAME
976 FF_DISABLE_DEPRECATION_WARNINGS
977 avctx->coded_frame = av_frame_alloc();
978 if (!avctx->coded_frame) {
979 ret = AVERROR(ENOMEM);
980 goto free_and_end;
981 }
982 FF_ENABLE_DEPRECATION_WARNINGS
983 #endif
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 if (avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ420P ||
1011 avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ422P ||
1012 avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ440P ||
1013 avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ444P)
1014 avctx->color_range = AVCOL_RANGE_JPEG;
1015 }
1016 if (avctx->codec->supported_samplerates) {
1017 for (i = 0; avctx->codec->supported_samplerates[i] != 0; i++)
1018 if (avctx->sample_rate == avctx->codec->supported_samplerates[i])
1019 break;
1020 if (avctx->codec->supported_samplerates[i] == 0) {
1021 av_log(avctx, AV_LOG_ERROR, "Specified sample_rate is not supported\n");
1022 ret = AVERROR(EINVAL);
1023 goto free_and_end;
1024 }
1025 }
1026 if (avctx->codec->channel_layouts) {
1027 if (!avctx->channel_layout) {
1028 av_log(avctx, AV_LOG_WARNING, "channel_layout not specified\n");
1029 } else {
1030 for (i = 0; avctx->codec->channel_layouts[i] != 0; i++)
1031 if (avctx->channel_layout == avctx->codec->channel_layouts[i])
1032 break;
1033 if (avctx->codec->channel_layouts[i] == 0) {
1034 av_log(avctx, AV_LOG_ERROR, "Specified channel_layout is not supported\n");
1035 ret = AVERROR(EINVAL);
1036 goto free_and_end;
1037 }
1038 }
1039 }
1040 if (avctx->channel_layout && avctx->channels) {
1041 if (av_get_channel_layout_nb_channels(avctx->channel_layout) != avctx->channels) {
1042 av_log(avctx, AV_LOG_ERROR, "channel layout does not match number of channels\n");
1043 ret = AVERROR(EINVAL);
1044 goto free_and_end;
1045 }
1046 } else if (avctx->channel_layout) {
1047 avctx->channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
1048 }
1049
1050 if (!avctx->rc_initial_buffer_occupancy)
1051 avctx->rc_initial_buffer_occupancy = avctx->rc_buffer_size * 3 / 4;
1052 }
1053
1054 if (avctx->codec->init && !(avctx->active_thread_type & FF_THREAD_FRAME)) {
1055 ret = avctx->codec->init(avctx);
1056 if (ret < 0) {
1057 goto free_and_end;
1058 }
1059 }
1060
1061 #if FF_API_AUDIOENC_DELAY
1062 if (av_codec_is_encoder(avctx->codec))
1063 avctx->delay = avctx->initial_padding;
1064 #endif
1065
1066 if (av_codec_is_decoder(avctx->codec)) {
1067 /* validate channel layout from the decoder */
1068 if (avctx->channel_layout) {
1069 int channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
1070 if (!avctx->channels)
1071 avctx->channels = channels;
1072 else if (channels != avctx->channels) {
1073 av_log(avctx, AV_LOG_WARNING,
1074 "channel layout does not match number of channels\n");
1075 avctx->channel_layout = 0;
1076 }
1077 }
1078 if (avctx->channels && avctx->channels < 0 ||
1079 avctx->channels > FF_SANE_NB_CHANNELS) {
1080 ret = AVERROR(EINVAL);
1081 goto free_and_end;
1082 }
1083
1084 #if FF_API_AVCTX_TIMEBASE
1085 if (avctx->framerate.num > 0 && avctx->framerate.den > 0)
1086 avctx->time_base = av_inv_q(avctx->framerate);
1087 #endif
1088 }
1089 end:
1090 if (!(codec->caps_internal & FF_CODEC_CAP_INIT_THREADSAFE) && codec->init) {
1091 entangled_thread_counter--;
1092
1093 /* Release any user-supplied mutex. */
1094 if (lockmgr_cb) {
1095 (*lockmgr_cb)(&codec_mutex, AV_LOCK_RELEASE);
1096 }
1097 }
1098
1099 if (options) {
1100 av_dict_free(options);
1101 *options = tmp;
1102 }
1103
1104 return ret;
1105 free_and_end:
1106 if (avctx->codec &&
1107 (avctx->codec->caps_internal & FF_CODEC_CAP_INIT_CLEANUP))
1108 avctx->codec->close(avctx);
1109
1110 if (avctx->priv_data && avctx->codec && avctx->codec->priv_class)
1111 av_opt_free(avctx->priv_data);
1112 av_opt_free(avctx);
1113
1114 #if FF_API_CODED_FRAME
1115 FF_DISABLE_DEPRECATION_WARNINGS
1116 av_frame_free(&avctx->coded_frame);
1117 FF_ENABLE_DEPRECATION_WARNINGS
1118 #endif
1119
1120 av_dict_free(&tmp);
1121 av_freep(&avctx->priv_data);
1122 if (avctx->internal) {
1123 av_frame_free(&avctx->internal->to_free);
1124 av_freep(&avctx->internal->pool);
1125 }
1126 av_freep(&avctx->internal);
1127 avctx->codec = NULL;
1128 goto end;
1129 }
1130
1131 int ff_alloc_packet(AVPacket *avpkt, int size)
1132 {
1133 if (size > INT_MAX - AV_INPUT_BUFFER_PADDING_SIZE)
1134 return AVERROR(EINVAL);
1135
1136 if (avpkt->data) {
1137 AVBufferRef *buf = avpkt->buf;
1138
1139 if (avpkt->size < size)
1140 return AVERROR(EINVAL);
1141
1142 av_init_packet(avpkt);
1143 avpkt->buf = buf;
1144 avpkt->size = size;
1145 return 0;
1146 } else {
1147 return av_new_packet(avpkt, size);
1148 }
1149 }
1150
1151 /**
1152 * Pad last frame with silence.
1153 */
1154 static int pad_last_frame(AVCodecContext *s, AVFrame **dst, const AVFrame *src)
1155 {
1156 AVFrame *frame = NULL;
1157 int ret;
1158
1159 if (!(frame = av_frame_alloc()))
1160 return AVERROR(ENOMEM);
1161
1162 frame->format = src->format;
1163 frame->channel_layout = src->channel_layout;
1164 frame->nb_samples = s->frame_size;
1165 ret = av_frame_get_buffer(frame, 32);
1166 if (ret < 0)
1167 goto fail;
1168
1169 ret = av_frame_copy_props(frame, src);
1170 if (ret < 0)
1171 goto fail;
1172
1173 if ((ret = av_samples_copy(frame->extended_data, src->extended_data, 0, 0,
1174 src->nb_samples, s->channels, s->sample_fmt)) < 0)
1175 goto fail;
1176 if ((ret = av_samples_set_silence(frame->extended_data, src->nb_samples,
1177 frame->nb_samples - src->nb_samples,
1178 s->channels, s->sample_fmt)) < 0)
1179 goto fail;
1180
1181 *dst = frame;
1182
1183 return 0;
1184
1185 fail:
1186 av_frame_free(&frame);
1187 return ret;
1188 }
1189
1190 int attribute_align_arg avcodec_encode_audio2(AVCodecContext *avctx,
1191 AVPacket *avpkt,
1192 const AVFrame *frame,
1193 int *got_packet_ptr)
1194 {
1195 AVFrame tmp;
1196 AVFrame *padded_frame = NULL;
1197 int ret;
1198 int user_packet = !!avpkt->data;
1199
1200 *got_packet_ptr = 0;
1201
1202 if (!(avctx->codec->capabilities & AV_CODEC_CAP_DELAY) && !frame) {
1203 av_packet_unref(avpkt);
1204 av_init_packet(avpkt);
1205 return 0;
1206 }
1207
1208 /* ensure that extended_data is properly set */
1209 if (frame && !frame->extended_data) {
1210 if (av_sample_fmt_is_planar(avctx->sample_fmt) &&
1211 avctx->channels > AV_NUM_DATA_POINTERS) {
1212 av_log(avctx, AV_LOG_ERROR, "Encoding to a planar sample format, "
1213 "with more than %d channels, but extended_data is not set.\n",
1214 AV_NUM_DATA_POINTERS);
1215 return AVERROR(EINVAL);
1216 }
1217 av_log(avctx, AV_LOG_WARNING, "extended_data is not set.\n");
1218
1219 tmp = *frame;
1220 tmp.extended_data = tmp.data;
1221 frame = &tmp;
1222 }
1223
1224 /* extract audio service type metadata */
1225 if (frame) {
1226 AVFrameSideData *sd = av_frame_get_side_data(frame, AV_FRAME_DATA_AUDIO_SERVICE_TYPE);
1227 if (sd && sd->size >= sizeof(enum AVAudioServiceType))
1228 avctx->audio_service_type = *(enum AVAudioServiceType*)sd->data;
1229 }
1230
1231 /* check for valid frame size */
1232 if (frame) {
1233 if (avctx->codec->capabilities & AV_CODEC_CAP_SMALL_LAST_FRAME) {
1234 if (frame->nb_samples > avctx->frame_size)
1235 return AVERROR(EINVAL);
1236 } else if (!(avctx->codec->capabilities & AV_CODEC_CAP_VARIABLE_FRAME_SIZE)) {
1237 if (frame->nb_samples < avctx->frame_size &&
1238 !avctx->internal->last_audio_frame) {
1239 ret = pad_last_frame(avctx, &padded_frame, frame);
1240 if (ret < 0)
1241 return ret;
1242
1243 frame = padded_frame;
1244 avctx->internal->last_audio_frame = 1;
1245 }
1246
1247 if (frame->nb_samples != avctx->frame_size) {
1248 ret = AVERROR(EINVAL);
1249 goto end;
1250 }
1251 }
1252 }
1253
1254 ret = avctx->codec->encode2(avctx, avpkt, frame, got_packet_ptr);
1255 if (!ret) {
1256 if (*got_packet_ptr) {
1257 if (!(avctx->codec->capabilities & AV_CODEC_CAP_DELAY)) {
1258 if (avpkt->pts == AV_NOPTS_VALUE)
1259 avpkt->pts = frame->pts;
1260 if (!avpkt->duration)
1261 avpkt->duration = ff_samples_to_time_base(avctx,
1262 frame->nb_samples);
1263 }
1264 avpkt->dts = avpkt->pts;
1265 } else {
1266 avpkt->size = 0;
1267 }
1268
1269 if (!user_packet && avpkt->size) {
1270 ret = av_buffer_realloc(&avpkt->buf, avpkt->size);
1271 if (ret >= 0)
1272 avpkt->data = avpkt->buf->data;
1273 }
1274
1275 avctx->frame_number++;
1276 }
1277
1278 if (ret < 0 || !*got_packet_ptr) {
1279 av_packet_unref(avpkt);
1280 av_init_packet(avpkt);
1281 goto end;
1282 }
1283
1284 /* NOTE: if we add any audio encoders which output non-keyframe packets,
1285 * this needs to be moved to the encoders, but for now we can do it
1286 * here to simplify things */
1287 avpkt->flags |= AV_PKT_FLAG_KEY;
1288
1289 end:
1290 av_frame_free(&padded_frame);
1291
1292 #if FF_API_AUDIOENC_DELAY
1293 avctx->delay = avctx->initial_padding;
1294 #endif
1295
1296 return ret;
1297 }
1298
1299 int attribute_align_arg avcodec_encode_video2(AVCodecContext *avctx,
1300 AVPacket *avpkt,
1301 const AVFrame *frame,
1302 int *got_packet_ptr)
1303 {
1304 int ret;
1305 int user_packet = !!avpkt->data;
1306
1307 *got_packet_ptr = 0;
1308
1309 if (!(avctx->codec->capabilities & AV_CODEC_CAP_DELAY) && !frame) {
1310 av_packet_unref(avpkt);
1311 av_init_packet(avpkt);
1312 avpkt->size = 0;
1313 return 0;
1314 }
1315
1316 if (av_image_check_size(avctx->width, avctx->height, 0, avctx))
1317 return AVERROR(EINVAL);
1318
1319 av_assert0(avctx->codec->encode2);
1320
1321 ret = avctx->codec->encode2(avctx, avpkt, frame, got_packet_ptr);
1322 if (!ret) {
1323 if (!*got_packet_ptr)
1324 avpkt->size = 0;
1325 else if (!(avctx->codec->capabilities & AV_CODEC_CAP_DELAY))
1326 avpkt->pts = avpkt->dts = frame->pts;
1327
1328 if (!user_packet && avpkt->size) {
1329 ret = av_buffer_realloc(&avpkt->buf, avpkt->size);
1330 if (ret >= 0)
1331 avpkt->data = avpkt->buf->data;
1332 }
1333
1334 avctx->frame_number++;
1335 }
1336
1337 if (ret < 0 || !*got_packet_ptr)
1338 av_packet_unref(avpkt);
1339
1340 emms_c();
1341 return ret;
1342 }
1343
1344 int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size,
1345 const AVSubtitle *sub)
1346 {
1347 int ret;
1348 if (sub->start_display_time) {
1349 av_log(avctx, AV_LOG_ERROR, "start_display_time must be 0.\n");
1350 return -1;
1351 }
1352 if (sub->num_rects == 0 || !sub->rects)
1353 return -1;
1354 ret = avctx->codec->encode_sub(avctx, buf, buf_size, sub);
1355 avctx->frame_number++;
1356 return ret;
1357 }
1358
1359 static int apply_param_change(AVCodecContext *avctx, AVPacket *avpkt)
1360 {
1361 int size = 0, ret;
1362 const uint8_t *data;
1363 uint32_t flags;
1364
1365 data = av_packet_get_side_data(avpkt, AV_PKT_DATA_PARAM_CHANGE, &size);
1366 if (!data)
1367 return 0;
1368
1369 if (!(avctx->codec->capabilities & AV_CODEC_CAP_PARAM_CHANGE)) {
1370 av_log(avctx, AV_LOG_ERROR, "This decoder does not support parameter "
1371 "changes, but PARAM_CHANGE side data was sent to it.\n");
1372 return AVERROR(EINVAL);
1373 }
1374
1375 if (size < 4)
1376 goto fail;
1377
1378 flags = bytestream_get_le32(&data);
1379 size -= 4;
1380
1381 if (flags & AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_COUNT) {
1382 if (size < 4)
1383 goto fail;
1384 avctx->channels = bytestream_get_le32(&data);
1385 size -= 4;
1386 }
1387 if (flags & AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_LAYOUT) {
1388 if (size < 8)
1389 goto fail;
1390 avctx->channel_layout = bytestream_get_le64(&data);
1391 size -= 8;
1392 }
1393 if (flags & AV_SIDE_DATA_PARAM_CHANGE_SAMPLE_RATE) {
1394 if (size < 4)
1395 goto fail;
1396 avctx->sample_rate = bytestream_get_le32(&data);
1397 size -= 4;
1398 }
1399 if (flags & AV_SIDE_DATA_PARAM_CHANGE_DIMENSIONS) {
1400 if (size < 8)
1401 goto fail;
1402 avctx->width = bytestream_get_le32(&data);
1403 avctx->height = bytestream_get_le32(&data);
1404 size -= 8;
1405 ret = ff_set_dimensions(avctx, avctx->width, avctx->height);
1406 if (ret < 0)
1407 return ret;
1408 }
1409
1410 return 0;
1411 fail:
1412 av_log(avctx, AV_LOG_ERROR, "PARAM_CHANGE side data too small.\n");
1413 return AVERROR_INVALIDDATA;
1414 }
1415
1416 static int unrefcount_frame(AVCodecInternal *avci, AVFrame *frame)
1417 {
1418 int ret;
1419
1420 /* move the original frame to our backup */
1421 av_frame_unref(avci->to_free);
1422 av_frame_move_ref(avci->to_free, frame);
1423
1424 /* now copy everything except the AVBufferRefs back
1425 * note that we make a COPY of the side data, so calling av_frame_free() on
1426 * the caller's frame will work properly */
1427 ret = av_frame_copy_props(frame, avci->to_free);
1428 if (ret < 0)
1429 return ret;
1430
1431 memcpy(frame->data, avci->to_free->data, sizeof(frame->data));
1432 memcpy(frame->linesize, avci->to_free->linesize, sizeof(frame->linesize));
1433 if (avci->to_free->extended_data != avci->to_free->data) {
1434 int planes = av_get_channel_layout_nb_channels(avci->to_free->channel_layout);
1435 int size = planes * sizeof(*frame->extended_data);
1436
1437 if (!size) {
1438 av_frame_unref(frame);
1439 return AVERROR_BUG;
1440 }
1441
1442 frame->extended_data = av_malloc(size);
1443 if (!frame->extended_data) {
1444 av_frame_unref(frame);
1445 return AVERROR(ENOMEM);
1446 }
1447 memcpy(frame->extended_data, avci->to_free->extended_data,
1448 size);
1449 } else
1450 frame->extended_data = frame->data;
1451
1452 frame->format = avci->to_free->format;
1453 frame->width = avci->to_free->width;
1454 frame->height = avci->to_free->height;
1455 frame->channel_layout = avci->to_free->channel_layout;
1456 frame->nb_samples = avci->to_free->nb_samples;
1457
1458 return 0;
1459 }
1460
1461 int attribute_align_arg avcodec_decode_video2(AVCodecContext *avctx, AVFrame *picture,
1462 int *got_picture_ptr,
1463 AVPacket *avpkt)
1464 {
1465 AVCodecInternal *avci = avctx->internal;
1466 int ret;
1467
1468 *got_picture_ptr = 0;
1469 if ((avctx->coded_width || avctx->coded_height) && av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx))
1470 return -1;
1471
1472 avctx->internal->pkt = avpkt;
1473 ret = apply_param_change(avctx, avpkt);
1474 if (ret < 0) {
1475 av_log(avctx, AV_LOG_ERROR, "Error applying parameter changes.\n");
1476 if (avctx->err_recognition & AV_EF_EXPLODE)
1477 return ret;
1478 }
1479
1480 av_frame_unref(picture);
1481
1482 if ((avctx->codec->capabilities & AV_CODEC_CAP_DELAY) || avpkt->size ||
1483 (avctx->active_thread_type & FF_THREAD_FRAME)) {
1484 if (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME)
1485 ret = ff_thread_decode_frame(avctx, picture, got_picture_ptr,
1486 avpkt);
1487 else {
1488 ret = avctx->codec->decode(avctx, picture, got_picture_ptr,
1489 avpkt);
1490 if (!(avctx->codec->caps_internal & FF_CODEC_CAP_SETS_PKT_DTS))
1491 picture->pkt_dts = avpkt->dts;
1492 /* get_buffer is supposed to set frame parameters */
1493 if (!(avctx->codec->capabilities & AV_CODEC_CAP_DR1)) {
1494 picture->sample_aspect_ratio = avctx->sample_aspect_ratio;
1495 picture->width = avctx->width;
1496 picture->height = avctx->height;
1497 picture->format = avctx->pix_fmt;
1498 }
1499 }
1500
1501 emms_c(); //needed to avoid an emms_c() call before every return;
1502
1503 if (*got_picture_ptr) {
1504 if (!avctx->refcounted_frames) {
1505 int err = unrefcount_frame(avci, picture);
1506 if (err < 0)
1507 return err;
1508 }
1509
1510 avctx->frame_number++;
1511 } else
1512 av_frame_unref(picture);
1513 } else
1514 ret = 0;
1515
1516 #if FF_API_AVCTX_TIMEBASE
1517 if (avctx->framerate.num > 0 && avctx->framerate.den > 0)
1518 avctx->time_base = av_inv_q(avctx->framerate);
1519 #endif
1520
1521 return ret;
1522 }
1523
1524 int attribute_align_arg avcodec_decode_audio4(AVCodecContext *avctx,
1525 AVFrame *frame,
1526 int *got_frame_ptr,
1527 AVPacket *avpkt)
1528 {
1529 AVCodecInternal *avci = avctx->internal;
1530 int ret = 0;
1531
1532 *got_frame_ptr = 0;
1533
1534 avctx->internal->pkt = avpkt;
1535
1536 if (!avpkt->data && avpkt->size) {
1537 av_log(avctx, AV_LOG_ERROR, "invalid packet: NULL data, size != 0\n");
1538 return AVERROR(EINVAL);
1539 }
1540
1541 ret = apply_param_change(avctx, avpkt);
1542 if (ret < 0) {
1543 av_log(avctx, AV_LOG_ERROR, "Error applying parameter changes.\n");
1544 if (avctx->err_recognition & AV_EF_EXPLODE)
1545 return ret;
1546 }
1547
1548 av_frame_unref(frame);
1549
1550 if ((avctx->codec->capabilities & AV_CODEC_CAP_DELAY) || avpkt->size) {
1551 ret = avctx->codec->decode(avctx, frame, got_frame_ptr, avpkt);
1552 if (ret >= 0 && *got_frame_ptr) {
1553 avctx->frame_number++;
1554 frame->pkt_dts = avpkt->dts;
1555 if (frame->format == AV_SAMPLE_FMT_NONE)
1556 frame->format = avctx->sample_fmt;
1557
1558 if (!avctx->refcounted_frames) {
1559 int err = unrefcount_frame(avci, frame);
1560 if (err < 0)
1561 return err;
1562 }
1563 } else
1564 av_frame_unref(frame);
1565 }
1566
1567
1568 return ret;
1569 }
1570
1571 int avcodec_decode_subtitle2(AVCodecContext *avctx, AVSubtitle *sub,
1572 int *got_sub_ptr,
1573 AVPacket *avpkt)
1574 {
1575 int ret;
1576
1577 avctx->internal->pkt = avpkt;
1578 *got_sub_ptr = 0;
1579 ret = avctx->codec->decode(avctx, sub, got_sub_ptr, avpkt);
1580 if (*got_sub_ptr)
1581 avctx->frame_number++;
1582 return ret;
1583 }
1584
1585 void avsubtitle_free(AVSubtitle *sub)
1586 {
1587 int i;
1588
1589 for (i = 0; i < sub->num_rects; i++) {
1590 av_freep(&sub->rects[i]->data[0]);
1591 av_freep(&sub->rects[i]->data[1]);
1592 av_freep(&sub->rects[i]->data[2]);
1593 av_freep(&sub->rects[i]->data[3]);
1594 av_freep(&sub->rects[i]->text);
1595 av_freep(&sub->rects[i]->ass);
1596 av_freep(&sub->rects[i]);
1597 }
1598
1599 av_freep(&sub->rects);
1600
1601 memset(sub, 0, sizeof(AVSubtitle));
1602 }
1603
1604 av_cold int avcodec_close(AVCodecContext *avctx)
1605 {
1606 int i;
1607
1608 if (avcodec_is_open(avctx)) {
1609 FramePool *pool = avctx->internal->pool;
1610
1611 if (HAVE_THREADS && avctx->internal->thread_ctx)
1612 ff_thread_free(avctx);
1613 if (avctx->codec && avctx->codec->close)
1614 avctx->codec->close(avctx);
1615 av_frame_free(&avctx->internal->to_free);
1616 for (i = 0; i < FF_ARRAY_ELEMS(pool->pools); i++)
1617 av_buffer_pool_uninit(&pool->pools[i]);
1618 av_freep(&avctx->internal->pool);
1619
1620 if (avctx->hwaccel && avctx->hwaccel->uninit)
1621 avctx->hwaccel->uninit(avctx);
1622 av_freep(&avctx->internal->hwaccel_priv_data);
1623
1624 av_freep(&avctx->internal);
1625 }
1626
1627 for (i = 0; i < avctx->nb_coded_side_data; i++)
1628 av_freep(&avctx->coded_side_data[i].data);
1629 av_freep(&avctx->coded_side_data);
1630 avctx->nb_coded_side_data = 0;
1631
1632 if (avctx->priv_data && avctx->codec && avctx->codec->priv_class)
1633 av_opt_free(avctx->priv_data);
1634 av_opt_free(avctx);
1635 av_freep(&avctx->priv_data);
1636 if (av_codec_is_encoder(avctx->codec)) {
1637 av_freep(&avctx->extradata);
1638 #if FF_API_CODED_FRAME
1639 FF_DISABLE_DEPRECATION_WARNINGS
1640 av_frame_free(&avctx->coded_frame);
1641 FF_ENABLE_DEPRECATION_WARNINGS
1642 #endif
1643 }
1644 avctx->codec = NULL;
1645 avctx->active_thread_type = 0;
1646
1647 return 0;
1648 }
1649
1650 static AVCodec *find_encdec(enum AVCodecID id, int encoder)
1651 {
1652 AVCodec *p, *experimental = NULL;
1653 p = first_avcodec;
1654 while (p) {
1655 if ((encoder ? av_codec_is_encoder(p) : av_codec_is_decoder(p)) &&
1656 p->id == id) {
1657 if (p->capabilities & AV_CODEC_CAP_EXPERIMENTAL && !experimental) {
1658 experimental = p;
1659 } else
1660 return p;
1661 }
1662 p = p->next;
1663 }
1664 return experimental;
1665 }
1666
1667 AVCodec *avcodec_find_encoder(enum AVCodecID id)
1668 {
1669 return find_encdec(id, 1);
1670 }
1671
1672 AVCodec *avcodec_find_encoder_by_name(const char *name)
1673 {
1674 AVCodec *p;
1675 if (!name)
1676 return NULL;
1677 p = first_avcodec;
1678 while (p) {
1679 if (av_codec_is_encoder(p) && strcmp(name, p->name) == 0)
1680 return p;
1681 p = p->next;
1682 }
1683 return NULL;
1684 }
1685
1686 AVCodec *avcodec_find_decoder(enum AVCodecID id)
1687 {
1688 return find_encdec(id, 0);
1689 }
1690
1691 AVCodec *avcodec_find_decoder_by_name(const char *name)
1692 {
1693 AVCodec *p;
1694 if (!name)
1695 return NULL;
1696 p = first_avcodec;
1697 while (p) {
1698 if (av_codec_is_decoder(p) && strcmp(name, p->name) == 0)
1699 return p;
1700 p = p->next;
1701 }
1702 return NULL;
1703 }
1704
1705 static int get_bit_rate(AVCodecContext *ctx)
1706 {
1707 int bit_rate;
1708 int bits_per_sample;
1709
1710 switch (ctx->codec_type) {
1711 case AVMEDIA_TYPE_VIDEO:
1712 case AVMEDIA_TYPE_DATA:
1713 case AVMEDIA_TYPE_SUBTITLE:
1714 case AVMEDIA_TYPE_ATTACHMENT:
1715 bit_rate = ctx->bit_rate;
1716 break;
1717 case AVMEDIA_TYPE_AUDIO:
1718 bits_per_sample = av_get_bits_per_sample(ctx->codec_id);
1719 bit_rate = bits_per_sample ? ctx->sample_rate * ctx->channels * bits_per_sample : ctx->bit_rate;
1720 break;
1721 default:
1722 bit_rate = 0;
1723 break;
1724 }
1725 return bit_rate;
1726 }
1727
1728 size_t av_get_codec_tag_string(char *buf, size_t buf_size, unsigned int codec_tag)
1729 {
1730 int i, len, ret = 0;
1731
1732 #define TAG_PRINT(x) \
1733 (((x) >= '0' && (x) <= '9') || \
1734 ((x) >= 'a' && (x) <= 'z') || ((x) >= 'A' && (x) <= 'Z') || \
1735 ((x) == '.' || (x) == ' '))
1736
1737 for (i = 0; i < 4; i++) {
1738 len = snprintf(buf, buf_size,
1739 TAG_PRINT(codec_tag & 0xFF) ? "%c" : "[%d]", codec_tag & 0xFF);
1740 buf += len;
1741 buf_size = buf_size > len ? buf_size - len : 0;
1742 ret += len;
1743 codec_tag >>= 8;
1744 }
1745 return ret;
1746 }
1747
1748 void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)
1749 {
1750 const char *codec_name;
1751 const char *profile = NULL;
1752 const AVCodec *p;
1753 char buf1[32];
1754 int bitrate;
1755 int new_line = 0;
1756 AVRational display_aspect_ratio;
1757
1758 if (enc->codec)
1759 p = enc->codec;
1760 else if (encode)
1761 p = avcodec_find_encoder(enc->codec_id);
1762 else
1763 p = avcodec_find_decoder(enc->codec_id);
1764
1765 if (p) {
1766 codec_name = p->name;
1767 profile = av_get_profile_name(p, enc->profile);
1768 } else if (enc->codec_id == AV_CODEC_ID_MPEG2TS) {
1769 /* fake mpeg2 transport stream codec (currently not
1770 * registered) */
1771 codec_name = "mpeg2ts";
1772 } else {
1773 /* output avi tags */
1774 char tag_buf[32];
1775 av_get_codec_tag_string(tag_buf, sizeof(tag_buf), enc->codec_tag);
1776 snprintf(buf1, sizeof(buf1), "%s / 0x%04X", tag_buf, enc->codec_tag);
1777 codec_name = buf1;
1778 }
1779
1780 switch (enc->codec_type) {
1781 case AVMEDIA_TYPE_VIDEO:
1782 snprintf(buf, buf_size,
1783 "Video: %s%s",
1784 codec_name, enc->mb_decision ? " (hq)" : "");
1785 if (profile)
1786 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1787 " (%s)", profile);
1788 if (enc->codec_tag) {
1789 char tag_buf[32];
1790 av_get_codec_tag_string(tag_buf, sizeof(tag_buf), enc->codec_tag);
1791 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1792 " [%s / 0x%04X]", tag_buf, enc->codec_tag);
1793 }
1794
1795 av_strlcat(buf, "\n ", buf_size);
1796 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1797 "%s", enc->pix_fmt == AV_PIX_FMT_NONE ? "none" :
1798 av_get_pix_fmt_name(enc->pix_fmt));
1799
1800 if (enc->color_range != AVCOL_RANGE_UNSPECIFIED)
1801 snprintf(buf + strlen(buf), buf_size - strlen(buf), ", %s",
1802 av_color_range_name(enc->color_range));
1803 if (enc->colorspace != AVCOL_SPC_UNSPECIFIED ||
1804 enc->color_primaries != AVCOL_PRI_UNSPECIFIED ||
1805 enc->color_trc != AVCOL_TRC_UNSPECIFIED) {
1806 new_line = 1;
1807 snprintf(buf + strlen(buf), buf_size - strlen(buf), ", %s/%s/%s",
1808 av_color_space_name(enc->colorspace),
1809 av_color_primaries_name(enc->color_primaries),
1810 av_color_transfer_name(enc->color_trc));
1811 }
1812 if (av_log_get_level() >= AV_LOG_DEBUG &&
1813 enc->chroma_sample_location != AVCHROMA_LOC_UNSPECIFIED)
1814 snprintf(buf + strlen(buf), buf_size - strlen(buf), ", %s",
1815 av_chroma_location_name(enc->chroma_sample_location));
1816
1817 if (enc->width) {
1818 av_strlcat(buf, new_line ? "\n " : ", ", buf_size);
1819
1820 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1821 "%dx%d",
1822 enc->width, enc->height);
1823
1824 if (av_log_get_level() >= AV_LOG_VERBOSE &&
1825 (enc->width != enc->coded_width ||
1826 enc->height != enc->coded_height))
1827 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1828 " (%dx%d)", enc->coded_width, enc->coded_height);
1829
1830 if (enc->sample_aspect_ratio.num) {
1831 av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
1832 enc->width * enc->sample_aspect_ratio.num,
1833 enc->height * enc->sample_aspect_ratio.den,
1834 1024 * 1024);
1835 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1836 " [PAR %d:%d DAR %d:%d]",
1837 enc->sample_aspect_ratio.num, enc->sample_aspect_ratio.den,
1838 display_aspect_ratio.num, display_aspect_ratio.den);
1839 }
1840 if (av_log_get_level() >= AV_LOG_DEBUG) {
1841 int g = av_gcd(enc->time_base.num, enc->time_base.den);
1842 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1843 ", %d/%d",
1844 enc->time_base.num / g, enc->time_base.den / g);
1845 }
1846 }
1847 if (encode) {
1848 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1849 ", q=%d-%d", enc->qmin, enc->qmax);
1850 }
1851 break;
1852 case AVMEDIA_TYPE_AUDIO:
1853 snprintf(buf, buf_size,
1854 "Audio: %s",
1855 codec_name);
1856 if (profile)
1857 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1858 " (%s)", profile);
1859 if (enc->codec_tag) {
1860 char tag_buf[32];
1861 av_get_codec_tag_string(tag_buf, sizeof(tag_buf), enc->codec_tag);
1862 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1863 " [%s / 0x%04X]", tag_buf, enc->codec_tag);
1864 }
1865
1866 av_strlcat(buf, "\n ", buf_size);
1867 if (enc->sample_rate) {
1868 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1869 "%d Hz, ", enc->sample_rate);
1870 }
1871 av_get_channel_layout_string(buf + strlen(buf), buf_size - strlen(buf), enc->channels, enc->channel_layout);
1872 if (enc->sample_fmt != AV_SAMPLE_FMT_NONE) {
1873 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1874 ", %s", av_get_sample_fmt_name(enc->sample_fmt));
1875 }
1876 break;
1877 case AVMEDIA_TYPE_DATA:
1878 snprintf(buf, buf_size, "Data: %s", codec_name);
1879 break;
1880 case AVMEDIA_TYPE_SUBTITLE:
1881 snprintf(buf, buf_size, "Subtitle: %s", codec_name);
1882 break;
1883 case AVMEDIA_TYPE_ATTACHMENT:
1884 snprintf(buf, buf_size, "Attachment: %s", codec_name);
1885 break;
1886 default:
1887 snprintf(buf, buf_size, "Invalid Codec type %d", enc->codec_type);
1888 return;
1889 }
1890 if (encode) {
1891 if (enc->flags & AV_CODEC_FLAG_PASS1)
1892 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1893 ", pass 1");
1894 if (enc->flags & AV_CODEC_FLAG_PASS2)
1895 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1896 ", pass 2");
1897 }
1898 bitrate = get_bit_rate(enc);
1899 if (bitrate != 0) {
1900 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1901 ", %d kb/s", bitrate / 1000);
1902 }
1903 }
1904
1905 const char *av_get_profile_name(const AVCodec *codec, int profile)
1906 {
1907 const AVProfile *p;
1908 if (profile == FF_PROFILE_UNKNOWN || !codec->profiles)
1909 return NULL;
1910
1911 for (p = codec->profiles; p->profile != FF_PROFILE_UNKNOWN; p++)
1912 if (p->profile == profile)
1913 return p->name;
1914
1915 return NULL;
1916 }
1917
1918 unsigned avcodec_version(void)
1919 {
1920 return LIBAVCODEC_VERSION_INT;
1921 }
1922
1923 const char *avcodec_configuration(void)
1924 {
1925 return LIBAV_CONFIGURATION;
1926 }
1927
1928 const char *avcodec_license(void)
1929 {
1930 #define LICENSE_PREFIX "libavcodec license: "
1931 return LICENSE_PREFIX LIBAV_LICENSE + sizeof(LICENSE_PREFIX) - 1;
1932 }
1933
1934 void avcodec_flush_buffers(AVCodecContext *avctx)
1935 {
1936 if (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME)
1937 ff_thread_flush(avctx);
1938 else if (avctx->codec->flush)
1939 avctx->codec->flush(avctx);
1940
1941 if (!avctx->refcounted_frames)
1942 av_frame_unref(avctx->internal->to_free);
1943 }
1944
1945 int av_get_exact_bits_per_sample(enum AVCodecID codec_id)
1946 {
1947 switch (codec_id) {
1948 case AV_CODEC_ID_ADPCM_CT:
1949 case AV_CODEC_ID_ADPCM_IMA_APC:
1950 case AV_CODEC_ID_ADPCM_IMA_EA_SEAD:
1951 case AV_CODEC_ID_ADPCM_IMA_WS:
1952 case AV_CODEC_ID_ADPCM_G722:
1953 case AV_CODEC_ID_ADPCM_YAMAHA:
1954 return 4;
1955 case AV_CODEC_ID_PCM_ALAW:
1956 case AV_CODEC_ID_PCM_MULAW:
1957 case AV_CODEC_ID_PCM_S8:
1958 case AV_CODEC_ID_PCM_U8:
1959 case AV_CODEC_ID_PCM_ZORK:
1960 return 8;
1961 case AV_CODEC_ID_PCM_S16BE:
1962 case AV_CODEC_ID_PCM_S16BE_PLANAR:
1963 case AV_CODEC_ID_PCM_S16LE:
1964 case AV_CODEC_ID_PCM_S16LE_PLANAR:
1965 case AV_CODEC_ID_PCM_U16BE:
1966 case AV_CODEC_ID_PCM_U16LE:
1967 return 16;
1968 case AV_CODEC_ID_PCM_S24DAUD:
1969 case AV_CODEC_ID_PCM_S24BE:
1970 case AV_CODEC_ID_PCM_S24LE:
1971 case AV_CODEC_ID_PCM_S24LE_PLANAR:
1972 case AV_CODEC_ID_PCM_U24BE:
1973 case AV_CODEC_ID_PCM_U24LE:
1974 return 24;
1975 case AV_CODEC_ID_PCM_S32BE:
1976 case AV_CODEC_ID_PCM_S32LE:
1977 case AV_CODEC_ID_PCM_S32LE_PLANAR:
1978 case AV_CODEC_ID_PCM_U32BE:
1979 case AV_CODEC_ID_PCM_U32LE:
1980 case AV_CODEC_ID_PCM_F32BE:
1981 case AV_CODEC_ID_PCM_F32LE:
1982 return 32;
1983 case AV_CODEC_ID_PCM_F64BE:
1984 case AV_CODEC_ID_PCM_F64LE:
1985 return 64;
1986 default:
1987 return 0;
1988 }
1989 }
1990
1991 int av_get_bits_per_sample(enum AVCodecID codec_id)
1992 {
1993 switch (codec_id) {
1994 case AV_CODEC_ID_ADPCM_SBPRO_2:
1995 return 2;
1996 case AV_CODEC_ID_ADPCM_SBPRO_3:
1997 return 3;
1998 case AV_CODEC_ID_ADPCM_SBPRO_4:
1999 case AV_CODEC_ID_ADPCM_IMA_WAV:
2000 case AV_CODEC_ID_ADPCM_IMA_QT:
2001 case AV_CODEC_ID_ADPCM_SWF:
2002 case AV_CODEC_ID_ADPCM_MS:
2003 return 4;
2004 default:
2005 return av_get_exact_bits_per_sample(codec_id);
2006 }
2007 }
2008
2009 int av_get_audio_frame_duration(AVCodecContext *avctx, int frame_bytes)
2010 {
2011 int id, sr, ch, ba, tag, bps;
2012
2013 id = avctx->codec_id;
2014 sr = avctx->sample_rate;
2015 ch = avctx->channels;
2016 ba = avctx->block_align;
2017 tag = avctx->codec_tag;
2018 bps = av_get_exact_bits_per_sample(avctx->codec_id);
2019
2020 /* codecs with an exact constant bits per sample */
2021 if (bps > 0 && ch > 0 && frame_bytes > 0)
2022 return (frame_bytes * 8) / (bps * ch);
2023 bps = avctx->bits_per_coded_sample;
2024
2025 /* codecs with a fixed packet duration */
2026 switch (id) {
2027 case AV_CODEC_ID_ADPCM_ADX: return 32;
2028 case AV_CODEC_ID_ADPCM_IMA_QT: return 64;
2029 case AV_CODEC_ID_ADPCM_EA_XAS: return 128;
2030 case AV_CODEC_ID_AMR_NB:
2031 case AV_CODEC_ID_GSM:
2032 case AV_CODEC_ID_QCELP:
2033 case AV_CODEC_ID_RA_144:
2034 case AV_CODEC_ID_RA_288: return 160;
2035 case AV_CODEC_ID_IMC: return 256;
2036 case AV_CODEC_ID_AMR_WB:
2037 case AV_CODEC_ID_GSM_MS: return 320;
2038 case AV_CODEC_ID_MP1: return 384;
2039 case AV_CODEC_ID_ATRAC1: return 512;
2040 case AV_CODEC_ID_ATRAC3: return 1024;
2041 case AV_CODEC_ID_MP2:
2042 case AV_CODEC_ID_MUSEPACK7: return 1152;
2043 case AV_CODEC_ID_AC3: return 1536;
2044 }
2045
2046 if (sr > 0) {
2047 /* calc from sample rate */
2048 if (id == AV_CODEC_ID_TTA)
2049 return 256 * sr / 245;
2050
2051 if (ch > 0) {
2052 /* calc from sample rate and channels */
2053 if (id == AV_CODEC_ID_BINKAUDIO_DCT)
2054 return (480 << (sr / 22050)) / ch;
2055 }
2056 }
2057
2058 if (ba > 0) {
2059 /* calc from block_align */
2060 if (id == AV_CODEC_ID_SIPR) {
2061 switch (ba) {
2062 case 20: return 160;
2063 case 19: return 144;
2064 case 29: return 288;
2065 case 37: return 480;
2066 }
2067 } else if (id == AV_CODEC_ID_ILBC) {
2068 switch (ba) {
2069 case 38: return 160;
2070 case 50: return 240;
2071 }
2072 }
2073 }
2074
2075 if (frame_bytes > 0) {
2076 /* calc from frame_bytes only */
2077 if (id == AV_CODEC_ID_TRUESPEECH)
2078 return 240 * (frame_bytes / 32);
2079 if (id == AV_CODEC_ID_NELLYMOSER)
2080 return 256 * (frame_bytes / 64);
2081
2082 if (bps > 0) {
2083 /* calc from frame_bytes and bits_per_coded_sample */
2084 if (id == AV_CODEC_ID_ADPCM_G726)
2085 return frame_bytes * 8 / bps;
2086 }
2087
2088 if (ch > 0) {
2089 /* calc from frame_bytes and channels */
2090 switch (id) {
2091 case AV_CODEC_ID_ADPCM_4XM:
2092 case AV_CODEC_ID_ADPCM_IMA_ISS:
2093 return (frame_bytes - 4 * ch) * 2 / ch;
2094 case AV_CODEC_ID_ADPCM_IMA_SMJPEG:
2095 return (frame_bytes - 4) * 2 / ch;
2096 case AV_CODEC_ID_ADPCM_IMA_AMV:
2097 return (frame_bytes - 8) * 2 / ch;
2098 case AV_CODEC_ID_ADPCM_XA:
2099 return (frame_bytes / 128) * 224 / ch;
2100 case AV_CODEC_ID_INTERPLAY_DPCM:
2101 return (frame_bytes - 6 - ch) / ch;
2102 case AV_CODEC_ID_ROQ_DPCM:
2103 return (frame_bytes - 8) / ch;
2104 case AV_CODEC_ID_XAN_DPCM:
2105 return (frame_bytes - 2 * ch) / ch;
2106 case AV_CODEC_ID_MACE3:
2107 return 3 * frame_bytes / ch;
2108 case AV_CODEC_ID_MACE6:
2109 return 6 * frame_bytes / ch;
2110 case AV_CODEC_ID_PCM_LXF:
2111 return 2 * (frame_bytes / (5 * ch));
2112 }
2113
2114 if (tag) {
2115 /* calc from frame_bytes, channels, and codec_tag */
2116 if (id == AV_CODEC_ID_SOL_DPCM) {
2117 if (tag == 3)
2118 return frame_bytes / ch;
2119 else
2120 return frame_bytes * 2 / ch;
2121 }
2122 }
2123
2124 if (ba > 0) {
2125 /* calc from frame_bytes, channels, and block_align */
2126 int blocks = frame_bytes / ba;
2127 switch (avctx->codec_id) {
2128 case AV_CODEC_ID_ADPCM_IMA_WAV:
2129 return blocks * (1 + (ba - 4 * ch) / (4 * ch) * 8);
2130 case AV_CODEC_ID_ADPCM_IMA_DK3:
2131 return blocks * (((ba - 16) * 2 / 3 * 4) / ch);
2132 case AV_CODEC_ID_ADPCM_IMA_DK4:
2133 return blocks * (1 + (ba - 4 * ch) * 2 / ch);
2134 case AV_CODEC_ID_ADPCM_MS:
2135 return blocks * (2 + (ba - 7 * ch) * 2 / ch);
2136 }
2137 }
2138
2139 if (bps > 0) {
2140 /* calc from frame_bytes, channels, and bits_per_coded_sample */
2141 switch (avctx->codec_id) {
2142 case AV_CODEC_ID_PCM_DVD:
2143 return 2 * (frame_bytes / ((bps * 2 / 8) * ch));
2144 case AV_CODEC_ID_PCM_BLURAY:
2145 return frame_bytes / ((FFALIGN(ch, 2) * bps) / 8);
2146 case AV_CODEC_ID_S302M:
2147 return 2 * (frame_bytes / ((bps + 4) / 4)) / ch;
2148 }
2149 }
2150 }
2151 }
2152
2153 return 0;
2154 }
2155
2156 #if !HAVE_THREADS
2157 int ff_thread_init(AVCodecContext *s)
2158 {
2159 return -1;
2160 }
2161
2162 #endif
2163
2164 unsigned int av_xiphlacing(unsigned char *s, unsigned int v)
2165 {
2166 unsigned int n = 0;
2167
2168 while (v >= 0xff) {
2169 *s++ = 0xff;
2170 v -= 0xff;
2171 n++;
2172 }
2173 *s = v;
2174 n++;
2175 return n;
2176 }
2177
2178 int ff_match_2uint16(const uint16_t(*tab)[2], int size, int a, int b)
2179 {
2180 int i;
2181 for (i = 0; i < size && !(tab[i][0] == a && tab[i][1] == b); i++) ;
2182 return i;
2183 }
2184
2185 #if FF_API_MISSING_SAMPLE
2186 FF_DISABLE_DEPRECATION_WARNINGS
2187 void av_log_missing_feature(void *avc, const char *feature, int want_sample)
2188 {
2189 av_log(avc, AV_LOG_WARNING, "%s is not implemented. Update your Libav "
2190 "version to the newest one from Git. If the problem still "
2191 "occurs, it means that your file has a feature which has not "
2192 "been implemented.\n", feature);
2193 if(want_sample)
2194 av_log_ask_for_sample(avc, NULL);
2195 }
2196
2197 void av_log_ask_for_sample(void *avc, const char *msg, ...)
2198 {
2199 va_list argument_list;
2200
2201 va_start(argument_list, msg);
2202
2203 if (msg)
2204 av_vlog(avc, AV_LOG_WARNING, msg, argument_list);
2205 av_log(avc, AV_LOG_WARNING, "If you want to help, upload a sample "
2206 "of this file to ftp://upload.libav.org/incoming/ "
2207 "and contact the libav-devel mailing list.\n");
2208
2209 va_end(argument_list);
2210 }
2211 FF_ENABLE_DEPRECATION_WARNINGS
2212 #endif /* FF_API_MISSING_SAMPLE */
2213
2214 static AVHWAccel *first_hwaccel = NULL;
2215
2216 void av_register_hwaccel(AVHWAccel *hwaccel)
2217 {
2218 AVHWAccel **p = &first_hwaccel;
2219 while (*p)
2220 p = &(*p)->next;
2221 *p = hwaccel;
2222 hwaccel->next = NULL;
2223 }
2224
2225 AVHWAccel *av_hwaccel_next(const AVHWAccel *hwaccel)
2226 {
2227 return hwaccel ? hwaccel->next : first_hwaccel;
2228 }
2229
2230 int av_lockmgr_register(int (*cb)(void **mutex, enum AVLockOp op))
2231 {
2232 if (lockmgr_cb) {
2233 // There is no good way to rollback a failure to destroy the
2234 // mutex, so we ignore failures.
2235 lockmgr_cb(&codec_mutex, AV_LOCK_DESTROY);
2236 lockmgr_cb(&avformat_mutex, AV_LOCK_DESTROY);
2237 lockmgr_cb = NULL;
2238 codec_mutex = NULL;
2239 avformat_mutex = NULL;
2240 }
2241
2242 if (cb) {
2243 void *new_codec_mutex = NULL;
2244 void *new_avformat_mutex = NULL;
2245 int err;
2246 if (err = cb(&new_codec_mutex, AV_LOCK_CREATE)) {
2247 return err > 0 ? AVERROR_UNKNOWN : err;
2248 }
2249 if (err = cb(&new_avformat_mutex, AV_LOCK_CREATE)) {
2250 // Ignore failures to destroy the newly created mutex.
2251 cb(&new_codec_mutex, AV_LOCK_DESTROY);
2252 return err > 0 ? AVERROR_UNKNOWN : err;
2253 }
2254 lockmgr_cb = cb;
2255 codec_mutex = new_codec_mutex;
2256 avformat_mutex = new_avformat_mutex;
2257 }
2258
2259 return 0;
2260 }
2261
2262 int avpriv_lock_avformat(void)
2263 {
2264 if (lockmgr_cb) {
2265 if ((*lockmgr_cb)(&avformat_mutex, AV_LOCK_OBTAIN))
2266 return -1;
2267 }
2268 return 0;
2269 }
2270
2271 int avpriv_unlock_avformat(void)
2272 {
2273 if (lockmgr_cb) {
2274 if ((*lockmgr_cb)(&avformat_mutex, AV_LOCK_RELEASE))
2275 return -1;
2276 }
2277 return 0;
2278 }
2279
2280 unsigned int avpriv_toupper4(unsigned int x)
2281 {
2282 return av_toupper(x & 0xFF) +
2283 (av_toupper((x >> 8) & 0xFF) << 8) +
2284 (av_toupper((x >> 16) & 0xFF) << 16) +
2285 (av_toupper((x >> 24) & 0xFF) << 24);
2286 }
2287
2288 int ff_thread_ref_frame(ThreadFrame *dst, ThreadFrame *src)
2289 {
2290 int ret;
2291
2292 dst->owner = src->owner;
2293
2294 ret = av_frame_ref(dst->f, src->f);
2295 if (ret < 0)
2296 return ret;
2297
2298 if (src->progress &&
2299 !(dst->progress = av_buffer_ref(src->progress))) {
2300 ff_thread_release_buffer(dst->owner, dst);
2301 return AVERROR(ENOMEM);
2302 }
2303
2304 return 0;
2305 }
2306
2307 #if !HAVE_THREADS
2308
2309 int ff_thread_get_buffer(AVCodecContext *avctx, ThreadFrame *f, int flags)
2310 {
2311 f->owner = avctx;
2312 return ff_get_buffer(avctx, f->f, flags);
2313 }
2314
2315 void ff_thread_release_buffer(AVCodecContext *avctx, ThreadFrame *f)
2316 {
2317 if (f->f)
2318 av_frame_unref(f->f);
2319 }
2320
2321 void ff_thread_finish_setup(AVCodecContext *avctx)
2322 {
2323 }
2324
2325 void ff_thread_report_progress(ThreadFrame *f, int progress, int field)
2326 {
2327 }
2328
2329 void ff_thread_await_progress(ThreadFrame *f, int progress, int field)
2330 {
2331 }
2332
2333 #endif
2334
2335 int avcodec_is_open(AVCodecContext *s)
2336 {
2337 return !!s->internal;
2338 }
2339
2340 const uint8_t *avpriv_find_start_code(const uint8_t *restrict p,
2341 const uint8_t *end,
2342 uint32_t * restrict state)
2343 {
2344 int i;
2345
2346 assert(p <= end);
2347 if (p >= end)
2348 return end;
2349
2350 for (i = 0; i < 3; i++) {
2351 uint32_t tmp = *state << 8;
2352 *state = tmp + *(p++);
2353 if (tmp == 0x100 || p == end)
2354 return p;
2355 }
2356
2357 while (p < end) {
2358 if (p[-1] > 1 ) p += 3;
2359 else if (p[-2] ) p += 2;
2360 else if (p[-3]|(p[-1]-1)) p++;
2361 else {
2362 p++;
2363 break;
2364 }
2365 }
2366
2367 p = FFMIN(p, end) - 4;
2368 *state = AV_RB32(p);
2369
2370 return p + 4;
2371 }
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