aarch64: Add assembly support for -fsanitize=hwaddress tagged globals.
[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/hwcontext.h"
36 #include "libavutil/internal.h"
37 #include "libavutil/mathematics.h"
38 #include "libavutil/pixdesc.h"
39 #include "libavutil/imgutils.h"
40 #include "libavutil/samplefmt.h"
41 #include "libavutil/dict.h"
42 #include "avcodec.h"
43 #include "libavutil/opt.h"
44 #include "me_cmp.h"
45 #include "mpegvideo.h"
46 #include "thread.h"
47 #include "internal.h"
48 #include "bytestream.h"
49 #include "version.h"
50 #include <stdlib.h>
51 #include <stdarg.h>
52 #include <limits.h>
53 #include <float.h>
54
55 static int volatile entangled_thread_counter = 0;
56 static int (*lockmgr_cb)(void **mutex, enum AVLockOp op);
57 static void *codec_mutex;
58 static void *avformat_mutex;
59
60 void av_fast_padded_malloc(void *ptr, unsigned int *size, size_t min_size)
61 {
62 void **p = ptr;
63 if (min_size > SIZE_MAX - AV_INPUT_BUFFER_PADDING_SIZE) {
64 av_freep(p);
65 *size = 0;
66 return;
67 }
68 av_fast_malloc(p, size, min_size + AV_INPUT_BUFFER_PADDING_SIZE);
69 if (*size)
70 memset((uint8_t *)*p + min_size, 0, AV_INPUT_BUFFER_PADDING_SIZE);
71 }
72
73 /* encoder management */
74 static AVCodec *first_avcodec = NULL;
75
76 AVCodec *av_codec_next(const AVCodec *c)
77 {
78 if (c)
79 return c->next;
80 else
81 return first_avcodec;
82 }
83
84 static av_cold void avcodec_init(void)
85 {
86 static int initialized = 0;
87
88 if (initialized != 0)
89 return;
90 initialized = 1;
91
92 if (CONFIG_ME_CMP)
93 ff_me_cmp_init_static();
94 }
95
96 int av_codec_is_encoder(const AVCodec *codec)
97 {
98 return codec && (codec->encode_sub || codec->encode2 ||codec->send_frame);
99 }
100
101 int av_codec_is_decoder(const AVCodec *codec)
102 {
103 return codec && (codec->decode || codec->send_packet);
104 }
105
106 av_cold void avcodec_register(AVCodec *codec)
107 {
108 AVCodec **p;
109 avcodec_init();
110 p = &first_avcodec;
111 while (*p)
112 p = &(*p)->next;
113 *p = codec;
114 codec->next = NULL;
115
116 if (codec->init_static_data)
117 codec->init_static_data(codec);
118 }
119
120 #if FF_API_EMU_EDGE
121 unsigned avcodec_get_edge_width(void)
122 {
123 return EDGE_WIDTH;
124 }
125 #endif
126
127 #if FF_API_SET_DIMENSIONS
128 void avcodec_set_dimensions(AVCodecContext *s, int width, int height)
129 {
130 ff_set_dimensions(s, width, height);
131 }
132 #endif
133
134 int ff_set_dimensions(AVCodecContext *s, int width, int height)
135 {
136 int ret = av_image_check_size(width, height, 0, s);
137
138 if (ret < 0)
139 width = height = 0;
140 s->width = s->coded_width = width;
141 s->height = s->coded_height = height;
142
143 return ret;
144 }
145
146 int ff_set_sar(AVCodecContext *avctx, AVRational sar)
147 {
148 int ret = av_image_check_sar(avctx->width, avctx->height, sar);
149
150 if (ret < 0) {
151 av_log(avctx, AV_LOG_WARNING, "ignoring invalid SAR: %d/%d\n",
152 sar.num, sar.den);
153 avctx->sample_aspect_ratio = (AVRational){ 0, 1 };
154 return ret;
155 } else {
156 avctx->sample_aspect_ratio = sar;
157 }
158 return 0;
159 }
160
161 int ff_side_data_update_matrix_encoding(AVFrame *frame,
162 enum AVMatrixEncoding matrix_encoding)
163 {
164 AVFrameSideData *side_data;
165 enum AVMatrixEncoding *data;
166
167 side_data = av_frame_get_side_data(frame, AV_FRAME_DATA_MATRIXENCODING);
168 if (!side_data)
169 side_data = av_frame_new_side_data(frame, AV_FRAME_DATA_MATRIXENCODING,
170 sizeof(enum AVMatrixEncoding));
171
172 if (!side_data)
173 return AVERROR(ENOMEM);
174
175 data = (enum AVMatrixEncoding*)side_data->data;
176 *data = matrix_encoding;
177
178 return 0;
179 }
180
181 #if HAVE_SIMD_ALIGN_16
182 # define STRIDE_ALIGN 16
183 #else
184 # define STRIDE_ALIGN 8
185 #endif
186
187 void avcodec_align_dimensions2(AVCodecContext *s, int *width, int *height,
188 int linesize_align[AV_NUM_DATA_POINTERS])
189 {
190 int i;
191 int w_align = 1;
192 int h_align = 1;
193
194 switch (s->pix_fmt) {
195 case AV_PIX_FMT_YUV420P:
196 case AV_PIX_FMT_YUYV422:
197 case AV_PIX_FMT_YVYU422:
198 case AV_PIX_FMT_UYVY422:
199 case AV_PIX_FMT_YUV422P:
200 case AV_PIX_FMT_YUV440P:
201 case AV_PIX_FMT_YUV444P:
202 case AV_PIX_FMT_GBRP:
203 case AV_PIX_FMT_GBRAP:
204 case AV_PIX_FMT_GRAY8:
205 case AV_PIX_FMT_GRAY16BE:
206 case AV_PIX_FMT_GRAY16LE:
207 case AV_PIX_FMT_YUVJ420P:
208 case AV_PIX_FMT_YUVJ422P:
209 case AV_PIX_FMT_YUVJ440P:
210 case AV_PIX_FMT_YUVJ444P:
211 case AV_PIX_FMT_YUVA420P:
212 case AV_PIX_FMT_YUVA422P:
213 case AV_PIX_FMT_YUVA444P:
214 case AV_PIX_FMT_YUV420P9LE:
215 case AV_PIX_FMT_YUV420P9BE:
216 case AV_PIX_FMT_YUV420P10LE:
217 case AV_PIX_FMT_YUV420P10BE:
218 case AV_PIX_FMT_YUV422P9LE:
219 case AV_PIX_FMT_YUV422P9BE:
220 case AV_PIX_FMT_YUV422P10LE:
221 case AV_PIX_FMT_YUV422P10BE:
222 case AV_PIX_FMT_YUVA422P10LE:
223 case AV_PIX_FMT_YUVA422P10BE:
224 case AV_PIX_FMT_YUV444P9LE:
225 case AV_PIX_FMT_YUV444P9BE:
226 case AV_PIX_FMT_YUV444P10LE:
227 case AV_PIX_FMT_YUV444P10BE:
228 case AV_PIX_FMT_YUVA444P10LE:
229 case AV_PIX_FMT_YUVA444P10BE:
230 case AV_PIX_FMT_GBRP9LE:
231 case AV_PIX_FMT_GBRP9BE:
232 case AV_PIX_FMT_GBRP10LE:
233 case AV_PIX_FMT_GBRP10BE:
234 w_align = 16; //FIXME assume 16 pixel per macroblock
235 h_align = 16 * 2; // interlaced needs 2 macroblocks height
236 break;
237 case AV_PIX_FMT_YUV411P:
238 case AV_PIX_FMT_UYYVYY411:
239 w_align = 32;
240 h_align = 8;
241 break;
242 case AV_PIX_FMT_YUV410P:
243 if (s->codec_id == AV_CODEC_ID_SVQ1) {
244 w_align = 64;
245 h_align = 64;
246 }
247 case AV_PIX_FMT_RGB555:
248 if (s->codec_id == AV_CODEC_ID_RPZA) {
249 w_align = 4;
250 h_align = 4;
251 }
252 case AV_PIX_FMT_PAL8:
253 case AV_PIX_FMT_BGR8:
254 case AV_PIX_FMT_RGB8:
255 if (s->codec_id == AV_CODEC_ID_SMC) {
256 w_align = 4;
257 h_align = 4;
258 }
259 break;
260 case AV_PIX_FMT_BGR24:
261 if ((s->codec_id == AV_CODEC_ID_MSZH) ||
262 (s->codec_id == AV_CODEC_ID_ZLIB)) {
263 w_align = 4;
264 h_align = 4;
265 }
266 break;
267 default:
268 w_align = 1;
269 h_align = 1;
270 break;
271 }
272
273 *width = FFALIGN(*width, w_align);
274 *height = FFALIGN(*height, h_align);
275 if (s->codec_id == AV_CODEC_ID_H264)
276 // some of the optimized chroma MC reads one line too much
277 *height += 2;
278
279 for (i = 0; i < 4; i++)
280 linesize_align[i] = STRIDE_ALIGN;
281 }
282
283 void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height)
284 {
285 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(s->pix_fmt);
286 int chroma_shift = desc->log2_chroma_w;
287 int linesize_align[AV_NUM_DATA_POINTERS];
288 int align;
289
290 avcodec_align_dimensions2(s, width, height, linesize_align);
291 align = FFMAX(linesize_align[0], linesize_align[3]);
292 linesize_align[1] <<= chroma_shift;
293 linesize_align[2] <<= chroma_shift;
294 align = FFMAX3(align, linesize_align[1], linesize_align[2]);
295 *width = FFALIGN(*width, align);
296 }
297
298 int avcodec_fill_audio_frame(AVFrame *frame, int nb_channels,
299 enum AVSampleFormat sample_fmt, const uint8_t *buf,
300 int buf_size, int align)
301 {
302 int ch, planar, needed_size, ret = 0;
303
304 needed_size = av_samples_get_buffer_size(NULL, nb_channels,
305 frame->nb_samples, sample_fmt,
306 align);
307 if (buf_size < needed_size)
308 return AVERROR(EINVAL);
309
310 planar = av_sample_fmt_is_planar(sample_fmt);
311 if (planar && nb_channels > AV_NUM_DATA_POINTERS) {
312 if (!(frame->extended_data = av_mallocz(nb_channels *
313 sizeof(*frame->extended_data))))
314 return AVERROR(ENOMEM);
315 } else {
316 frame->extended_data = frame->data;
317 }
318
319 if ((ret = av_samples_fill_arrays(frame->extended_data, &frame->linesize[0],
320 buf, nb_channels, frame->nb_samples,
321 sample_fmt, align)) < 0) {
322 if (frame->extended_data != frame->data)
323 av_free(frame->extended_data);
324 return ret;
325 }
326 if (frame->extended_data != frame->data) {
327 for (ch = 0; ch < AV_NUM_DATA_POINTERS; ch++)
328 frame->data[ch] = frame->extended_data[ch];
329 }
330
331 return ret;
332 }
333
334 static int update_frame_pool(AVCodecContext *avctx, AVFrame *frame)
335 {
336 FramePool *pool = avctx->internal->pool;
337 int i, ret;
338
339 switch (avctx->codec_type) {
340 case AVMEDIA_TYPE_VIDEO: {
341 uint8_t *data[4];
342 int linesize[4];
343 int size[4] = { 0 };
344 int w = frame->width;
345 int h = frame->height;
346 int tmpsize, unaligned;
347
348 if (pool->format == frame->format &&
349 pool->width == frame->width && pool->height == frame->height)
350 return 0;
351
352 avcodec_align_dimensions2(avctx, &w, &h, pool->stride_align);
353
354 do {
355 // NOTE: do not align linesizes individually, this breaks e.g. assumptions
356 // that linesize[0] == 2*linesize[1] in the MPEG-encoder for 4:2:2
357 av_image_fill_linesizes(linesize, avctx->pix_fmt, w);
358 // increase alignment of w for next try (rhs gives the lowest bit set in w)
359 w += w & ~(w - 1);
360
361 unaligned = 0;
362 for (i = 0; i < 4; i++)
363 unaligned |= linesize[i] % pool->stride_align[i];
364 } while (unaligned);
365
366 tmpsize = av_image_fill_pointers(data, avctx->pix_fmt, h,
367 NULL, linesize);
368 if (tmpsize < 0)
369 return -1;
370
371 for (i = 0; i < 3 && data[i + 1]; i++)
372 size[i] = data[i + 1] - data[i];
373 size[i] = tmpsize - (data[i] - data[0]);
374
375 for (i = 0; i < 4; i++) {
376 av_buffer_pool_uninit(&pool->pools[i]);
377 pool->linesize[i] = linesize[i];
378 if (size[i]) {
379 pool->pools[i] = av_buffer_pool_init(size[i] + 16, NULL);
380 if (!pool->pools[i]) {
381 ret = AVERROR(ENOMEM);
382 goto fail;
383 }
384 }
385 }
386 pool->format = frame->format;
387 pool->width = frame->width;
388 pool->height = frame->height;
389
390 break;
391 }
392 case AVMEDIA_TYPE_AUDIO: {
393 int ch = av_get_channel_layout_nb_channels(frame->channel_layout);
394 int planar = av_sample_fmt_is_planar(frame->format);
395 int planes = planar ? ch : 1;
396
397 if (pool->format == frame->format && pool->planes == planes &&
398 pool->channels == ch && frame->nb_samples == pool->samples)
399 return 0;
400
401 av_buffer_pool_uninit(&pool->pools[0]);
402 ret = av_samples_get_buffer_size(&pool->linesize[0], ch,
403 frame->nb_samples, frame->format, 0);
404 if (ret < 0)
405 goto fail;
406
407 pool->pools[0] = av_buffer_pool_init(pool->linesize[0], NULL);
408 if (!pool->pools[0]) {
409 ret = AVERROR(ENOMEM);
410 goto fail;
411 }
412
413 pool->format = frame->format;
414 pool->planes = planes;
415 pool->channels = ch;
416 pool->samples = frame->nb_samples;
417 break;
418 }
419 default: av_assert0(0);
420 }
421 return 0;
422 fail:
423 for (i = 0; i < 4; i++)
424 av_buffer_pool_uninit(&pool->pools[i]);
425 pool->format = -1;
426 pool->planes = pool->channels = pool->samples = 0;
427 pool->width = pool->height = 0;
428 return ret;
429 }
430
431 static int audio_get_buffer(AVCodecContext *avctx, AVFrame *frame)
432 {
433 FramePool *pool = avctx->internal->pool;
434 int planes = pool->planes;
435 int i;
436
437 frame->linesize[0] = pool->linesize[0];
438
439 if (planes > AV_NUM_DATA_POINTERS) {
440 frame->extended_data = av_mallocz(planes * sizeof(*frame->extended_data));
441 frame->nb_extended_buf = planes - AV_NUM_DATA_POINTERS;
442 frame->extended_buf = av_mallocz(frame->nb_extended_buf *
443 sizeof(*frame->extended_buf));
444 if (!frame->extended_data || !frame->extended_buf) {
445 av_freep(&frame->extended_data);
446 av_freep(&frame->extended_buf);
447 return AVERROR(ENOMEM);
448 }
449 } else
450 frame->extended_data = frame->data;
451
452 for (i = 0; i < FFMIN(planes, AV_NUM_DATA_POINTERS); i++) {
453 frame->buf[i] = av_buffer_pool_get(pool->pools[0]);
454 if (!frame->buf[i])
455 goto fail;
456 frame->extended_data[i] = frame->data[i] = frame->buf[i]->data;
457 }
458 for (i = 0; i < frame->nb_extended_buf; i++) {
459 frame->extended_buf[i] = av_buffer_pool_get(pool->pools[0]);
460 if (!frame->extended_buf[i])
461 goto fail;
462 frame->extended_data[i + AV_NUM_DATA_POINTERS] = frame->extended_buf[i]->data;
463 }
464
465 if (avctx->debug & FF_DEBUG_BUFFERS)
466 av_log(avctx, AV_LOG_DEBUG, "default_get_buffer called on frame %p", frame);
467
468 return 0;
469 fail:
470 av_frame_unref(frame);
471 return AVERROR(ENOMEM);
472 }
473
474 static int video_get_buffer(AVCodecContext *s, AVFrame *pic)
475 {
476 FramePool *pool = s->internal->pool;
477 int i;
478
479 if (pic->data[0]) {
480 av_log(s, AV_LOG_ERROR, "pic->data[0]!=NULL in avcodec_default_get_buffer\n");
481 return -1;
482 }
483
484 memset(pic->data, 0, sizeof(pic->data));
485 pic->extended_data = pic->data;
486
487 for (i = 0; i < 4 && pool->pools[i]; i++) {
488 pic->linesize[i] = pool->linesize[i];
489
490 pic->buf[i] = av_buffer_pool_get(pool->pools[i]);
491 if (!pic->buf[i])
492 goto fail;
493
494 pic->data[i] = pic->buf[i]->data;
495 }
496 for (; i < AV_NUM_DATA_POINTERS; i++) {
497 pic->data[i] = NULL;
498 pic->linesize[i] = 0;
499 }
500 if (pic->data[1] && !pic->data[2])
501 avpriv_set_systematic_pal2((uint32_t *)pic->data[1], s->pix_fmt);
502
503 if (s->debug & FF_DEBUG_BUFFERS)
504 av_log(s, AV_LOG_DEBUG, "default_get_buffer called on pic %p\n", pic);
505
506 return 0;
507 fail:
508 av_frame_unref(pic);
509 return AVERROR(ENOMEM);
510 }
511
512 int avcodec_default_get_buffer2(AVCodecContext *avctx, AVFrame *frame, int flags)
513 {
514 int ret;
515
516 if (avctx->hw_frames_ctx)
517 return av_hwframe_get_buffer(avctx->hw_frames_ctx, frame, 0);
518
519 if ((ret = update_frame_pool(avctx, frame)) < 0)
520 return ret;
521
522 switch (avctx->codec_type) {
523 case AVMEDIA_TYPE_VIDEO:
524 return video_get_buffer(avctx, frame);
525 case AVMEDIA_TYPE_AUDIO:
526 return audio_get_buffer(avctx, frame);
527 default:
528 return -1;
529 }
530 }
531
532 int ff_decode_frame_props(AVCodecContext *avctx, AVFrame *frame)
533 {
534 AVPacket *pkt = avctx->internal->pkt;
535 int i;
536 struct {
537 enum AVPacketSideDataType packet;
538 enum AVFrameSideDataType frame;
539 } sd[] = {
540 { AV_PKT_DATA_REPLAYGAIN , AV_FRAME_DATA_REPLAYGAIN },
541 { AV_PKT_DATA_DISPLAYMATRIX, AV_FRAME_DATA_DISPLAYMATRIX },
542 { AV_PKT_DATA_STEREO3D, AV_FRAME_DATA_STEREO3D },
543 { AV_PKT_DATA_AUDIO_SERVICE_TYPE, AV_FRAME_DATA_AUDIO_SERVICE_TYPE },
544 };
545
546 frame->color_primaries = avctx->color_primaries;
547 frame->color_trc = avctx->color_trc;
548 frame->colorspace = avctx->colorspace;
549 frame->color_range = avctx->color_range;
550 frame->chroma_location = avctx->chroma_sample_location;
551
552 frame->reordered_opaque = avctx->reordered_opaque;
553 if (!pkt) {
554 #if FF_API_PKT_PTS
555 FF_DISABLE_DEPRECATION_WARNINGS
556 frame->pkt_pts = AV_NOPTS_VALUE;
557 FF_ENABLE_DEPRECATION_WARNINGS
558 #endif
559 frame->pts = AV_NOPTS_VALUE;
560 return 0;
561 }
562
563 #if FF_API_PKT_PTS
564 FF_DISABLE_DEPRECATION_WARNINGS
565 frame->pkt_pts = pkt->pts;
566 FF_ENABLE_DEPRECATION_WARNINGS
567 #endif
568 frame->pts = pkt->pts;
569
570 for (i = 0; i < FF_ARRAY_ELEMS(sd); i++) {
571 int size;
572 uint8_t *packet_sd = av_packet_get_side_data(pkt, sd[i].packet, &size);
573 if (packet_sd) {
574 AVFrameSideData *frame_sd = av_frame_new_side_data(frame,
575 sd[i].frame,
576 size);
577 if (!frame_sd)
578 return AVERROR(ENOMEM);
579
580 memcpy(frame_sd->data, packet_sd, size);
581 }
582 }
583
584 return 0;
585 }
586
587 int ff_get_buffer(AVCodecContext *avctx, AVFrame *frame, int flags)
588 {
589 const AVHWAccel *hwaccel = avctx->hwaccel;
590 int override_dimensions = 1;
591 int ret;
592
593 switch (avctx->codec_type) {
594 case AVMEDIA_TYPE_VIDEO:
595 if (frame->width <= 0 || frame->height <= 0) {
596 frame->width = FFMAX(avctx->width, avctx->coded_width);
597 frame->height = FFMAX(avctx->height, avctx->coded_height);
598 override_dimensions = 0;
599 }
600 if (frame->format < 0)
601 frame->format = avctx->pix_fmt;
602 if (!frame->sample_aspect_ratio.num)
603 frame->sample_aspect_ratio = avctx->sample_aspect_ratio;
604
605 if (av_image_check_sar(frame->width, frame->height,
606 frame->sample_aspect_ratio) < 0) {
607 av_log(avctx, AV_LOG_WARNING, "ignoring invalid SAR: %u/%u\n",
608 frame->sample_aspect_ratio.num,
609 frame->sample_aspect_ratio.den);
610 frame->sample_aspect_ratio = (AVRational){ 0, 1 };
611 }
612
613 if ((ret = av_image_check_size(avctx->width, avctx->height, 0, avctx)) < 0)
614 return ret;
615 break;
616 case AVMEDIA_TYPE_AUDIO:
617 if (!frame->sample_rate)
618 frame->sample_rate = avctx->sample_rate;
619 if (frame->format < 0)
620 frame->format = avctx->sample_fmt;
621 if (!frame->channel_layout) {
622 if (avctx->channel_layout) {
623 if (av_get_channel_layout_nb_channels(avctx->channel_layout) !=
624 avctx->channels) {
625 av_log(avctx, AV_LOG_ERROR, "Inconsistent channel "
626 "configuration.\n");
627 return AVERROR(EINVAL);
628 }
629
630 frame->channel_layout = avctx->channel_layout;
631 } else {
632 if (avctx->channels > FF_SANE_NB_CHANNELS) {
633 av_log(avctx, AV_LOG_ERROR, "Too many channels: %d.\n",
634 avctx->channels);
635 return AVERROR(ENOSYS);
636 }
637
638 frame->channel_layout = av_get_default_channel_layout(avctx->channels);
639 if (!frame->channel_layout)
640 frame->channel_layout = (1ULL << avctx->channels) - 1;
641 }
642 }
643 break;
644 default: return AVERROR(EINVAL);
645 }
646
647 ret = ff_decode_frame_props(avctx, frame);
648 if (ret < 0)
649 return ret;
650
651 if (hwaccel) {
652 if (hwaccel->alloc_frame) {
653 ret = hwaccel->alloc_frame(avctx, frame);
654 goto end;
655 }
656 } else
657 avctx->sw_pix_fmt = avctx->pix_fmt;
658
659 ret = avctx->get_buffer2(avctx, frame, flags);
660
661 end:
662 if (avctx->codec_type == AVMEDIA_TYPE_VIDEO && !override_dimensions) {
663 frame->width = avctx->width;
664 frame->height = avctx->height;
665 }
666
667 return ret;
668 }
669
670 int ff_reget_buffer(AVCodecContext *avctx, AVFrame *frame)
671 {
672 AVFrame *tmp;
673 int ret;
674
675 av_assert0(avctx->codec_type == AVMEDIA_TYPE_VIDEO);
676
677 if (!frame->data[0])
678 return ff_get_buffer(avctx, frame, AV_GET_BUFFER_FLAG_REF);
679
680 if (av_frame_is_writable(frame))
681 return ff_decode_frame_props(avctx, frame);
682
683 tmp = av_frame_alloc();
684 if (!tmp)
685 return AVERROR(ENOMEM);
686
687 av_frame_move_ref(tmp, frame);
688
689 ret = ff_get_buffer(avctx, frame, AV_GET_BUFFER_FLAG_REF);
690 if (ret < 0) {
691 av_frame_free(&tmp);
692 return ret;
693 }
694
695 av_frame_copy(frame, tmp);
696 av_frame_free(&tmp);
697
698 return 0;
699 }
700
701 int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2), void *arg, int *ret, int count, int size)
702 {
703 int i;
704
705 for (i = 0; i < count; i++) {
706 int r = func(c, (char *)arg + i * size);
707 if (ret)
708 ret[i] = r;
709 }
710 return 0;
711 }
712
713 int avcodec_default_execute2(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2, int jobnr, int threadnr), void *arg, int *ret, int count)
714 {
715 int i;
716
717 for (i = 0; i < count; i++) {
718 int r = func(c, arg, i, 0);
719 if (ret)
720 ret[i] = r;
721 }
722 return 0;
723 }
724
725 static int is_hwaccel_pix_fmt(enum AVPixelFormat pix_fmt)
726 {
727 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
728 return desc->flags & AV_PIX_FMT_FLAG_HWACCEL;
729 }
730
731 enum AVPixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum AVPixelFormat *fmt)
732 {
733 while (*fmt != AV_PIX_FMT_NONE && is_hwaccel_pix_fmt(*fmt))
734 ++fmt;
735 return fmt[0];
736 }
737
738 static AVHWAccel *find_hwaccel(enum AVCodecID codec_id,
739 enum AVPixelFormat pix_fmt)
740 {
741 AVHWAccel *hwaccel = NULL;
742
743 while ((hwaccel = av_hwaccel_next(hwaccel)))
744 if (hwaccel->id == codec_id
745 && hwaccel->pix_fmt == pix_fmt)
746 return hwaccel;
747 return NULL;
748 }
749
750 static int setup_hwaccel(AVCodecContext *avctx,
751 const enum AVPixelFormat fmt,
752 const char *name)
753 {
754 AVHWAccel *hwa = find_hwaccel(avctx->codec_id, fmt);
755 int ret = 0;
756
757 if (!hwa) {
758 av_log(avctx, AV_LOG_ERROR,
759 "Could not find an AVHWAccel for the pixel format: %s",
760 name);
761 return AVERROR(ENOENT);
762 }
763
764 if (hwa->priv_data_size) {
765 avctx->internal->hwaccel_priv_data = av_mallocz(hwa->priv_data_size);
766 if (!avctx->internal->hwaccel_priv_data)
767 return AVERROR(ENOMEM);
768 }
769
770 if (hwa->init) {
771 ret = hwa->init(avctx);
772 if (ret < 0) {
773 av_freep(&avctx->internal->hwaccel_priv_data);
774 return ret;
775 }
776 }
777
778 avctx->hwaccel = hwa;
779
780 return 0;
781 }
782
783 int ff_get_format(AVCodecContext *avctx, const enum AVPixelFormat *fmt)
784 {
785 const AVPixFmtDescriptor *desc;
786 enum AVPixelFormat *choices;
787 enum AVPixelFormat ret;
788 unsigned n = 0;
789
790 while (fmt[n] != AV_PIX_FMT_NONE)
791 ++n;
792
793 av_assert0(n >= 1);
794 avctx->sw_pix_fmt = fmt[n - 1];
795 av_assert2(!is_hwaccel_pix_fmt(avctx->sw_pix_fmt));
796
797 choices = av_malloc_array(n + 1, sizeof(*choices));
798 if (!choices)
799 return AV_PIX_FMT_NONE;
800
801 memcpy(choices, fmt, (n + 1) * sizeof(*choices));
802
803 for (;;) {
804 if (avctx->hwaccel && avctx->hwaccel->uninit)
805 avctx->hwaccel->uninit(avctx);
806 av_freep(&avctx->internal->hwaccel_priv_data);
807 avctx->hwaccel = NULL;
808
809 av_buffer_unref(&avctx->hw_frames_ctx);
810
811 ret = avctx->get_format(avctx, choices);
812
813 desc = av_pix_fmt_desc_get(ret);
814 if (!desc) {
815 ret = AV_PIX_FMT_NONE;
816 break;
817 }
818
819 if (!(desc->flags & AV_PIX_FMT_FLAG_HWACCEL))
820 break;
821
822 if (avctx->hw_frames_ctx) {
823 AVHWFramesContext *hw_frames_ctx = (AVHWFramesContext*)avctx->hw_frames_ctx->data;
824 if (hw_frames_ctx->format != ret) {
825 av_log(avctx, AV_LOG_ERROR, "Format returned from get_buffer() "
826 "does not match the format of provided AVHWFramesContext\n");
827 ret = AV_PIX_FMT_NONE;
828 break;
829 }
830 }
831
832 if (!setup_hwaccel(avctx, ret, desc->name))
833 break;
834
835 /* Remove failed hwaccel from choices */
836 for (n = 0; choices[n] != ret; n++)
837 av_assert0(choices[n] != AV_PIX_FMT_NONE);
838
839 do
840 choices[n] = choices[n + 1];
841 while (choices[n++] != AV_PIX_FMT_NONE);
842 }
843
844 av_freep(&choices);
845 return ret;
846 }
847
848 int attribute_align_arg avcodec_open2(AVCodecContext *avctx, const AVCodec *codec, AVDictionary **options)
849 {
850 int ret = 0;
851 AVDictionary *tmp = NULL;
852
853 if (avcodec_is_open(avctx))
854 return 0;
855
856 if ((!codec && !avctx->codec)) {
857 av_log(avctx, AV_LOG_ERROR, "No codec provided to avcodec_open2().\n");
858 return AVERROR(EINVAL);
859 }
860 if ((codec && avctx->codec && codec != avctx->codec)) {
861 av_log(avctx, AV_LOG_ERROR, "This AVCodecContext was allocated for %s, "
862 "but %s passed to avcodec_open2().\n", avctx->codec->name, codec->name);
863 return AVERROR(EINVAL);
864 }
865 if (!codec)
866 codec = avctx->codec;
867
868 if (avctx->extradata_size < 0 || avctx->extradata_size >= FF_MAX_EXTRADATA_SIZE)
869 return AVERROR(EINVAL);
870
871 if (options)
872 av_dict_copy(&tmp, *options, 0);
873
874 /* If there is a user-supplied mutex locking routine, call it. */
875 if (!(codec->caps_internal & FF_CODEC_CAP_INIT_THREADSAFE) && codec->init) {
876 if (lockmgr_cb) {
877 if ((*lockmgr_cb)(&codec_mutex, AV_LOCK_OBTAIN))
878 return -1;
879 }
880
881 entangled_thread_counter++;
882 if (entangled_thread_counter != 1) {
883 av_log(avctx, AV_LOG_ERROR,
884 "Insufficient thread locking. At least %d threads are "
885 "calling avcodec_open2() at the same time right now.\n",
886 entangled_thread_counter);
887 ret = -1;
888 goto end;
889 }
890 }
891
892 avctx->internal = av_mallocz(sizeof(AVCodecInternal));
893 if (!avctx->internal) {
894 ret = AVERROR(ENOMEM);
895 goto end;
896 }
897
898 avctx->internal->pool = av_mallocz(sizeof(*avctx->internal->pool));
899 if (!avctx->internal->pool) {
900 ret = AVERROR(ENOMEM);
901 goto free_and_end;
902 }
903
904 avctx->internal->to_free = av_frame_alloc();
905 if (!avctx->internal->to_free) {
906 ret = AVERROR(ENOMEM);
907 goto free_and_end;
908 }
909
910 avctx->internal->buffer_frame = av_frame_alloc();
911 if (!avctx->internal->buffer_frame) {
912 ret = AVERROR(ENOMEM);
913 goto free_and_end;
914 }
915
916 avctx->internal->buffer_pkt = av_packet_alloc();
917 if (!avctx->internal->buffer_pkt) {
918 ret = AVERROR(ENOMEM);
919 goto free_and_end;
920 }
921
922 if (codec->priv_data_size > 0) {
923 if (!avctx->priv_data) {
924 avctx->priv_data = av_mallocz(codec->priv_data_size);
925 if (!avctx->priv_data) {
926 ret = AVERROR(ENOMEM);
927 goto end;
928 }
929 if (codec->priv_class) {
930 *(const AVClass **)avctx->priv_data = codec->priv_class;
931 av_opt_set_defaults(avctx->priv_data);
932 }
933 }
934 if (codec->priv_class && (ret = av_opt_set_dict(avctx->priv_data, &tmp)) < 0)
935 goto free_and_end;
936 } else {
937 avctx->priv_data = NULL;
938 }
939 if ((ret = av_opt_set_dict(avctx, &tmp)) < 0)
940 goto free_and_end;
941
942 if (avctx->coded_width && avctx->coded_height && !avctx->width && !avctx->height)
943 ret = ff_set_dimensions(avctx, avctx->coded_width, avctx->coded_height);
944 else if (avctx->width && avctx->height)
945 ret = ff_set_dimensions(avctx, avctx->width, avctx->height);
946 if (ret < 0)
947 goto free_and_end;
948
949 if ((avctx->coded_width || avctx->coded_height || avctx->width || avctx->height)
950 && ( av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx) < 0
951 || av_image_check_size(avctx->width, avctx->height, 0, avctx) < 0)) {
952 av_log(avctx, AV_LOG_WARNING, "ignoring invalid width/height values\n");
953 ff_set_dimensions(avctx, 0, 0);
954 }
955
956 if (avctx->width > 0 && avctx->height > 0) {
957 if (av_image_check_sar(avctx->width, avctx->height,
958 avctx->sample_aspect_ratio) < 0) {
959 av_log(avctx, AV_LOG_WARNING, "ignoring invalid SAR: %u/%u\n",
960 avctx->sample_aspect_ratio.num,
961 avctx->sample_aspect_ratio.den);
962 avctx->sample_aspect_ratio = (AVRational){ 0, 1 };
963 }
964 }
965
966 /* if the decoder init function was already called previously,
967 * free the already allocated subtitle_header before overwriting it */
968 if (av_codec_is_decoder(codec))
969 av_freep(&avctx->subtitle_header);
970
971 if (avctx->channels > FF_SANE_NB_CHANNELS) {
972 ret = AVERROR(EINVAL);
973 goto free_and_end;
974 }
975
976 avctx->codec = codec;
977 if ((avctx->codec_type == AVMEDIA_TYPE_UNKNOWN || avctx->codec_type == codec->type) &&
978 avctx->codec_id == AV_CODEC_ID_NONE) {
979 avctx->codec_type = codec->type;
980 avctx->codec_id = codec->id;
981 }
982 if (avctx->codec_id != codec->id || (avctx->codec_type != codec->type
983 && avctx->codec_type != AVMEDIA_TYPE_ATTACHMENT)) {
984 av_log(avctx, AV_LOG_ERROR, "codec type or id mismatches\n");
985 ret = AVERROR(EINVAL);
986 goto free_and_end;
987 }
988 avctx->frame_number = 0;
989
990 if ((avctx->codec->capabilities & AV_CODEC_CAP_EXPERIMENTAL) &&
991 avctx->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
992 ret = AVERROR_EXPERIMENTAL;
993 goto free_and_end;
994 }
995
996 if (avctx->codec_type == AVMEDIA_TYPE_AUDIO &&
997 (!avctx->time_base.num || !avctx->time_base.den)) {
998 avctx->time_base.num = 1;
999 avctx->time_base.den = avctx->sample_rate;
1000 }
1001
1002 if (HAVE_THREADS) {
1003 ret = ff_thread_init(avctx);
1004 if (ret < 0) {
1005 goto free_and_end;
1006 }
1007 }
1008 if (!HAVE_THREADS && !(codec->capabilities & AV_CODEC_CAP_AUTO_THREADS))
1009 avctx->thread_count = 1;
1010
1011 if (av_codec_is_encoder(avctx->codec)) {
1012 int i;
1013 #if FF_API_CODED_FRAME
1014 FF_DISABLE_DEPRECATION_WARNINGS
1015 avctx->coded_frame = av_frame_alloc();
1016 if (!avctx->coded_frame) {
1017 ret = AVERROR(ENOMEM);
1018 goto free_and_end;
1019 }
1020 FF_ENABLE_DEPRECATION_WARNINGS
1021 #endif
1022
1023 if (avctx->time_base.num <= 0 || avctx->time_base.den <= 0) {
1024 av_log(avctx, AV_LOG_ERROR, "The encoder timebase is not set.\n");
1025 ret = AVERROR(EINVAL);
1026 goto free_and_end;
1027 }
1028
1029 if (avctx->codec->sample_fmts) {
1030 for (i = 0; avctx->codec->sample_fmts[i] != AV_SAMPLE_FMT_NONE; i++) {
1031 if (avctx->sample_fmt == avctx->codec->sample_fmts[i])
1032 break;
1033 if (avctx->channels == 1 &&
1034 av_get_planar_sample_fmt(avctx->sample_fmt) ==
1035 av_get_planar_sample_fmt(avctx->codec->sample_fmts[i])) {
1036 avctx->sample_fmt = avctx->codec->sample_fmts[i];
1037 break;
1038 }
1039 }
1040 if (avctx->codec->sample_fmts[i] == AV_SAMPLE_FMT_NONE) {
1041 av_log(avctx, AV_LOG_ERROR, "Specified sample_fmt is not supported.\n");
1042 ret = AVERROR(EINVAL);
1043 goto free_and_end;
1044 }
1045 }
1046 if (avctx->codec->pix_fmts) {
1047 for (i = 0; avctx->codec->pix_fmts[i] != AV_PIX_FMT_NONE; i++)
1048 if (avctx->pix_fmt == avctx->codec->pix_fmts[i])
1049 break;
1050 if (avctx->codec->pix_fmts[i] == AV_PIX_FMT_NONE) {
1051 av_log(avctx, AV_LOG_ERROR, "Specified pix_fmt is not supported\n");
1052 ret = AVERROR(EINVAL);
1053 goto free_and_end;
1054 }
1055 if (avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ420P ||
1056 avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ422P ||
1057 avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ440P ||
1058 avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ444P)
1059 avctx->color_range = AVCOL_RANGE_JPEG;
1060 }
1061 if (avctx->codec->supported_samplerates) {
1062 for (i = 0; avctx->codec->supported_samplerates[i] != 0; i++)
1063 if (avctx->sample_rate == avctx->codec->supported_samplerates[i])
1064 break;
1065 if (avctx->codec->supported_samplerates[i] == 0) {
1066 av_log(avctx, AV_LOG_ERROR, "Specified sample_rate is not supported\n");
1067 ret = AVERROR(EINVAL);
1068 goto free_and_end;
1069 }
1070 }
1071 if (avctx->codec->channel_layouts) {
1072 if (!avctx->channel_layout) {
1073 av_log(avctx, AV_LOG_WARNING, "channel_layout not specified\n");
1074 } else {
1075 for (i = 0; avctx->codec->channel_layouts[i] != 0; i++)
1076 if (avctx->channel_layout == avctx->codec->channel_layouts[i])
1077 break;
1078 if (avctx->codec->channel_layouts[i] == 0) {
1079 av_log(avctx, AV_LOG_ERROR, "Specified channel_layout is not supported\n");
1080 ret = AVERROR(EINVAL);
1081 goto free_and_end;
1082 }
1083 }
1084 }
1085 if (avctx->channel_layout && avctx->channels) {
1086 if (av_get_channel_layout_nb_channels(avctx->channel_layout) != avctx->channels) {
1087 av_log(avctx, AV_LOG_ERROR, "channel layout does not match number of channels\n");
1088 ret = AVERROR(EINVAL);
1089 goto free_and_end;
1090 }
1091 } else if (avctx->channel_layout) {
1092 avctx->channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
1093 }
1094
1095 if (!avctx->rc_initial_buffer_occupancy)
1096 avctx->rc_initial_buffer_occupancy = avctx->rc_buffer_size * 3 / 4;
1097
1098 if (avctx->ticks_per_frame &&
1099 avctx->ticks_per_frame > INT_MAX / avctx->time_base.num) {
1100 av_log(avctx, AV_LOG_ERROR,
1101 "ticks_per_frame %d too large for the timebase %d/%d.",
1102 avctx->ticks_per_frame,
1103 avctx->time_base.num,
1104 avctx->time_base.den);
1105 goto free_and_end;
1106 }
1107
1108 if (avctx->hw_frames_ctx) {
1109 AVHWFramesContext *frames_ctx = (AVHWFramesContext*)avctx->hw_frames_ctx->data;
1110 if (frames_ctx->format != avctx->pix_fmt) {
1111 av_log(avctx, AV_LOG_ERROR,
1112 "Mismatching AVCodecContext.pix_fmt and AVHWFramesContext.format\n");
1113 ret = AVERROR(EINVAL);
1114 goto free_and_end;
1115 }
1116 }
1117 }
1118
1119 if (avctx->codec->init && !(avctx->active_thread_type & FF_THREAD_FRAME)) {
1120 ret = avctx->codec->init(avctx);
1121 if (ret < 0) {
1122 goto free_and_end;
1123 }
1124 }
1125
1126 #if FF_API_AUDIOENC_DELAY
1127 if (av_codec_is_encoder(avctx->codec))
1128 avctx->delay = avctx->initial_padding;
1129 #endif
1130
1131 if (av_codec_is_decoder(avctx->codec)) {
1132 /* validate channel layout from the decoder */
1133 if (avctx->channel_layout) {
1134 int channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
1135 if (!avctx->channels)
1136 avctx->channels = channels;
1137 else if (channels != avctx->channels) {
1138 av_log(avctx, AV_LOG_WARNING,
1139 "channel layout does not match number of channels\n");
1140 avctx->channel_layout = 0;
1141 }
1142 }
1143 if (avctx->channels && avctx->channels < 0 ||
1144 avctx->channels > FF_SANE_NB_CHANNELS) {
1145 ret = AVERROR(EINVAL);
1146 goto free_and_end;
1147 }
1148
1149 #if FF_API_AVCTX_TIMEBASE
1150 if (avctx->framerate.num > 0 && avctx->framerate.den > 0)
1151 avctx->time_base = av_inv_q(avctx->framerate);
1152 #endif
1153 }
1154 end:
1155 if (!(codec->caps_internal & FF_CODEC_CAP_INIT_THREADSAFE) && codec->init) {
1156 entangled_thread_counter--;
1157
1158 /* Release any user-supplied mutex. */
1159 if (lockmgr_cb) {
1160 (*lockmgr_cb)(&codec_mutex, AV_LOCK_RELEASE);
1161 }
1162 }
1163
1164 if (options) {
1165 av_dict_free(options);
1166 *options = tmp;
1167 }
1168
1169 return ret;
1170 free_and_end:
1171 if (avctx->codec &&
1172 (avctx->codec->caps_internal & FF_CODEC_CAP_INIT_CLEANUP))
1173 avctx->codec->close(avctx);
1174
1175 if (avctx->priv_data && avctx->codec && avctx->codec->priv_class)
1176 av_opt_free(avctx->priv_data);
1177 av_opt_free(avctx);
1178
1179 #if FF_API_CODED_FRAME
1180 FF_DISABLE_DEPRECATION_WARNINGS
1181 av_frame_free(&avctx->coded_frame);
1182 FF_ENABLE_DEPRECATION_WARNINGS
1183 #endif
1184
1185 av_dict_free(&tmp);
1186 av_freep(&avctx->priv_data);
1187 if (avctx->internal) {
1188 av_frame_free(&avctx->internal->to_free);
1189 av_freep(&avctx->internal->pool);
1190 }
1191 av_freep(&avctx->internal);
1192 avctx->codec = NULL;
1193 goto end;
1194 }
1195
1196 int ff_alloc_packet(AVPacket *avpkt, int size)
1197 {
1198 if (size > INT_MAX - AV_INPUT_BUFFER_PADDING_SIZE)
1199 return AVERROR(EINVAL);
1200
1201 if (avpkt->data) {
1202 AVBufferRef *buf = avpkt->buf;
1203
1204 if (avpkt->size < size)
1205 return AVERROR(EINVAL);
1206
1207 av_init_packet(avpkt);
1208 avpkt->buf = buf;
1209 avpkt->size = size;
1210 return 0;
1211 } else {
1212 return av_new_packet(avpkt, size);
1213 }
1214 }
1215
1216 /**
1217 * Pad last frame with silence.
1218 */
1219 static int pad_last_frame(AVCodecContext *s, AVFrame **dst, const AVFrame *src)
1220 {
1221 AVFrame *frame = NULL;
1222 int ret;
1223
1224 if (!(frame = av_frame_alloc()))
1225 return AVERROR(ENOMEM);
1226
1227 frame->format = src->format;
1228 frame->channel_layout = src->channel_layout;
1229 frame->nb_samples = s->frame_size;
1230 ret = av_frame_get_buffer(frame, 32);
1231 if (ret < 0)
1232 goto fail;
1233
1234 ret = av_frame_copy_props(frame, src);
1235 if (ret < 0)
1236 goto fail;
1237
1238 if ((ret = av_samples_copy(frame->extended_data, src->extended_data, 0, 0,
1239 src->nb_samples, s->channels, s->sample_fmt)) < 0)
1240 goto fail;
1241 if ((ret = av_samples_set_silence(frame->extended_data, src->nb_samples,
1242 frame->nb_samples - src->nb_samples,
1243 s->channels, s->sample_fmt)) < 0)
1244 goto fail;
1245
1246 *dst = frame;
1247
1248 return 0;
1249
1250 fail:
1251 av_frame_free(&frame);
1252 return ret;
1253 }
1254
1255 int attribute_align_arg avcodec_encode_audio2(AVCodecContext *avctx,
1256 AVPacket *avpkt,
1257 const AVFrame *frame,
1258 int *got_packet_ptr)
1259 {
1260 AVFrame tmp;
1261 AVFrame *padded_frame = NULL;
1262 int ret;
1263 int user_packet = !!avpkt->data;
1264
1265 *got_packet_ptr = 0;
1266
1267 if (!avctx->codec->encode2) {
1268 av_log(avctx, AV_LOG_ERROR, "This encoder requires using the avcodec_send_frame() API.\n");
1269 return AVERROR(ENOSYS);
1270 }
1271
1272 if (!(avctx->codec->capabilities & AV_CODEC_CAP_DELAY) && !frame) {
1273 av_packet_unref(avpkt);
1274 av_init_packet(avpkt);
1275 return 0;
1276 }
1277
1278 /* ensure that extended_data is properly set */
1279 if (frame && !frame->extended_data) {
1280 if (av_sample_fmt_is_planar(avctx->sample_fmt) &&
1281 avctx->channels > AV_NUM_DATA_POINTERS) {
1282 av_log(avctx, AV_LOG_ERROR, "Encoding to a planar sample format, "
1283 "with more than %d channels, but extended_data is not set.\n",
1284 AV_NUM_DATA_POINTERS);
1285 return AVERROR(EINVAL);
1286 }
1287 av_log(avctx, AV_LOG_WARNING, "extended_data is not set.\n");
1288
1289 tmp = *frame;
1290 tmp.extended_data = tmp.data;
1291 frame = &tmp;
1292 }
1293
1294 /* extract audio service type metadata */
1295 if (frame) {
1296 AVFrameSideData *sd = av_frame_get_side_data(frame, AV_FRAME_DATA_AUDIO_SERVICE_TYPE);
1297 if (sd && sd->size >= sizeof(enum AVAudioServiceType))
1298 avctx->audio_service_type = *(enum AVAudioServiceType*)sd->data;
1299 }
1300
1301 /* check for valid frame size */
1302 if (frame) {
1303 if (avctx->codec->capabilities & AV_CODEC_CAP_SMALL_LAST_FRAME) {
1304 if (frame->nb_samples > avctx->frame_size)
1305 return AVERROR(EINVAL);
1306 } else if (!(avctx->codec->capabilities & AV_CODEC_CAP_VARIABLE_FRAME_SIZE)) {
1307 if (frame->nb_samples < avctx->frame_size &&
1308 !avctx->internal->last_audio_frame) {
1309 ret = pad_last_frame(avctx, &padded_frame, frame);
1310 if (ret < 0)
1311 return ret;
1312
1313 frame = padded_frame;
1314 avctx->internal->last_audio_frame = 1;
1315 }
1316
1317 if (frame->nb_samples != avctx->frame_size) {
1318 ret = AVERROR(EINVAL);
1319 goto end;
1320 }
1321 }
1322 }
1323
1324 ret = avctx->codec->encode2(avctx, avpkt, frame, got_packet_ptr);
1325 if (!ret) {
1326 if (*got_packet_ptr) {
1327 if (!(avctx->codec->capabilities & AV_CODEC_CAP_DELAY)) {
1328 if (avpkt->pts == AV_NOPTS_VALUE)
1329 avpkt->pts = frame->pts;
1330 if (!avpkt->duration)
1331 avpkt->duration = ff_samples_to_time_base(avctx,
1332 frame->nb_samples);
1333 }
1334 avpkt->dts = avpkt->pts;
1335 } else {
1336 avpkt->size = 0;
1337 }
1338
1339 if (!user_packet && avpkt->size) {
1340 ret = av_buffer_realloc(&avpkt->buf, avpkt->size);
1341 if (ret >= 0)
1342 avpkt->data = avpkt->buf->data;
1343 }
1344
1345 avctx->frame_number++;
1346 }
1347
1348 if (ret < 0 || !*got_packet_ptr) {
1349 av_packet_unref(avpkt);
1350 av_init_packet(avpkt);
1351 goto end;
1352 }
1353
1354 /* NOTE: if we add any audio encoders which output non-keyframe packets,
1355 * this needs to be moved to the encoders, but for now we can do it
1356 * here to simplify things */
1357 avpkt->flags |= AV_PKT_FLAG_KEY;
1358
1359 end:
1360 av_frame_free(&padded_frame);
1361
1362 #if FF_API_AUDIOENC_DELAY
1363 avctx->delay = avctx->initial_padding;
1364 #endif
1365
1366 return ret;
1367 }
1368
1369 int attribute_align_arg avcodec_encode_video2(AVCodecContext *avctx,
1370 AVPacket *avpkt,
1371 const AVFrame *frame,
1372 int *got_packet_ptr)
1373 {
1374 int ret;
1375 int user_packet = !!avpkt->data;
1376
1377 *got_packet_ptr = 0;
1378
1379 if (!avctx->codec->encode2) {
1380 av_log(avctx, AV_LOG_ERROR, "This encoder requires using the avcodec_send_frame() API.\n");
1381 return AVERROR(ENOSYS);
1382 }
1383
1384 if (!(avctx->codec->capabilities & AV_CODEC_CAP_DELAY) && !frame) {
1385 av_packet_unref(avpkt);
1386 av_init_packet(avpkt);
1387 avpkt->size = 0;
1388 return 0;
1389 }
1390
1391 if (av_image_check_size(avctx->width, avctx->height, 0, avctx))
1392 return AVERROR(EINVAL);
1393
1394 av_assert0(avctx->codec->encode2);
1395
1396 ret = avctx->codec->encode2(avctx, avpkt, frame, got_packet_ptr);
1397 if (!ret) {
1398 if (!*got_packet_ptr)
1399 avpkt->size = 0;
1400 else if (!(avctx->codec->capabilities & AV_CODEC_CAP_DELAY))
1401 avpkt->pts = avpkt->dts = frame->pts;
1402
1403 if (!user_packet && avpkt->size) {
1404 ret = av_buffer_realloc(&avpkt->buf, avpkt->size);
1405 if (ret >= 0)
1406 avpkt->data = avpkt->buf->data;
1407 }
1408
1409 avctx->frame_number++;
1410 }
1411
1412 if (ret < 0 || !*got_packet_ptr)
1413 av_packet_unref(avpkt);
1414
1415 emms_c();
1416 return ret;
1417 }
1418
1419 int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size,
1420 const AVSubtitle *sub)
1421 {
1422 int ret;
1423 if (sub->start_display_time) {
1424 av_log(avctx, AV_LOG_ERROR, "start_display_time must be 0.\n");
1425 return -1;
1426 }
1427 if (sub->num_rects == 0 || !sub->rects)
1428 return -1;
1429 ret = avctx->codec->encode_sub(avctx, buf, buf_size, sub);
1430 avctx->frame_number++;
1431 return ret;
1432 }
1433
1434 static int apply_param_change(AVCodecContext *avctx, AVPacket *avpkt)
1435 {
1436 int size = 0, ret;
1437 const uint8_t *data;
1438 uint32_t flags;
1439
1440 data = av_packet_get_side_data(avpkt, AV_PKT_DATA_PARAM_CHANGE, &size);
1441 if (!data)
1442 return 0;
1443
1444 if (!(avctx->codec->capabilities & AV_CODEC_CAP_PARAM_CHANGE)) {
1445 av_log(avctx, AV_LOG_ERROR, "This decoder does not support parameter "
1446 "changes, but PARAM_CHANGE side data was sent to it.\n");
1447 ret = AVERROR(EINVAL);
1448 goto fail2;
1449 }
1450
1451 if (size < 4)
1452 goto fail;
1453
1454 flags = bytestream_get_le32(&data);
1455 size -= 4;
1456
1457 if (flags & AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_COUNT) {
1458 if (size < 4)
1459 goto fail;
1460 avctx->channels = bytestream_get_le32(&data);
1461 size -= 4;
1462 }
1463 if (flags & AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_LAYOUT) {
1464 if (size < 8)
1465 goto fail;
1466 avctx->channel_layout = bytestream_get_le64(&data);
1467 size -= 8;
1468 }
1469 if (flags & AV_SIDE_DATA_PARAM_CHANGE_SAMPLE_RATE) {
1470 if (size < 4)
1471 goto fail;
1472 avctx->sample_rate = bytestream_get_le32(&data);
1473 size -= 4;
1474 }
1475 if (flags & AV_SIDE_DATA_PARAM_CHANGE_DIMENSIONS) {
1476 if (size < 8)
1477 goto fail;
1478 avctx->width = bytestream_get_le32(&data);
1479 avctx->height = bytestream_get_le32(&data);
1480 size -= 8;
1481 ret = ff_set_dimensions(avctx, avctx->width, avctx->height);
1482 if (ret < 0)
1483 goto fail2;
1484 }
1485
1486 return 0;
1487 fail:
1488 av_log(avctx, AV_LOG_ERROR, "PARAM_CHANGE side data too small.\n");
1489 ret = AVERROR_INVALIDDATA;
1490 fail2:
1491 if (ret < 0) {
1492 av_log(avctx, AV_LOG_ERROR, "Error applying parameter changes.\n");
1493 if (avctx->err_recognition & AV_EF_EXPLODE)
1494 return ret;
1495 }
1496 return 0;
1497 }
1498
1499 static int unrefcount_frame(AVCodecInternal *avci, AVFrame *frame)
1500 {
1501 int ret;
1502
1503 /* move the original frame to our backup */
1504 av_frame_unref(avci->to_free);
1505 av_frame_move_ref(avci->to_free, frame);
1506
1507 /* now copy everything except the AVBufferRefs back
1508 * note that we make a COPY of the side data, so calling av_frame_free() on
1509 * the caller's frame will work properly */
1510 ret = av_frame_copy_props(frame, avci->to_free);
1511 if (ret < 0)
1512 return ret;
1513
1514 memcpy(frame->data, avci->to_free->data, sizeof(frame->data));
1515 memcpy(frame->linesize, avci->to_free->linesize, sizeof(frame->linesize));
1516 if (avci->to_free->extended_data != avci->to_free->data) {
1517 int planes = av_get_channel_layout_nb_channels(avci->to_free->channel_layout);
1518 int size = planes * sizeof(*frame->extended_data);
1519
1520 if (!size) {
1521 av_frame_unref(frame);
1522 return AVERROR_BUG;
1523 }
1524
1525 frame->extended_data = av_malloc(size);
1526 if (!frame->extended_data) {
1527 av_frame_unref(frame);
1528 return AVERROR(ENOMEM);
1529 }
1530 memcpy(frame->extended_data, avci->to_free->extended_data,
1531 size);
1532 } else
1533 frame->extended_data = frame->data;
1534
1535 frame->format = avci->to_free->format;
1536 frame->width = avci->to_free->width;
1537 frame->height = avci->to_free->height;
1538 frame->channel_layout = avci->to_free->channel_layout;
1539 frame->nb_samples = avci->to_free->nb_samples;
1540
1541 return 0;
1542 }
1543
1544 int attribute_align_arg avcodec_decode_video2(AVCodecContext *avctx, AVFrame *picture,
1545 int *got_picture_ptr,
1546 AVPacket *avpkt)
1547 {
1548 AVCodecInternal *avci = avctx->internal;
1549 int ret;
1550
1551 *got_picture_ptr = 0;
1552 if ((avctx->coded_width || avctx->coded_height) && av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx))
1553 return -1;
1554
1555 if (!avctx->codec->decode) {
1556 av_log(avctx, AV_LOG_ERROR, "This decoder requires using the avcodec_send_packet() API.\n");
1557 return AVERROR(ENOSYS);
1558 }
1559
1560 avctx->internal->pkt = avpkt;
1561 ret = apply_param_change(avctx, avpkt);
1562 if (ret < 0)
1563 return ret;
1564
1565 av_frame_unref(picture);
1566
1567 if ((avctx->codec->capabilities & AV_CODEC_CAP_DELAY) || avpkt->size ||
1568 (avctx->active_thread_type & FF_THREAD_FRAME)) {
1569 if (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME)
1570 ret = ff_thread_decode_frame(avctx, picture, got_picture_ptr,
1571 avpkt);
1572 else {
1573 ret = avctx->codec->decode(avctx, picture, got_picture_ptr,
1574 avpkt);
1575 if (!(avctx->codec->caps_internal & FF_CODEC_CAP_SETS_PKT_DTS))
1576 picture->pkt_dts = avpkt->dts;
1577 /* get_buffer is supposed to set frame parameters */
1578 if (!(avctx->codec->capabilities & AV_CODEC_CAP_DR1)) {
1579 picture->sample_aspect_ratio = avctx->sample_aspect_ratio;
1580 picture->width = avctx->width;
1581 picture->height = avctx->height;
1582 picture->format = avctx->pix_fmt;
1583 }
1584 }
1585
1586 emms_c(); //needed to avoid an emms_c() call before every return;
1587
1588 if (*got_picture_ptr) {
1589 if (!avctx->refcounted_frames) {
1590 int err = unrefcount_frame(avci, picture);
1591 if (err < 0)
1592 return err;
1593 }
1594
1595 avctx->frame_number++;
1596 } else
1597 av_frame_unref(picture);
1598 } else
1599 ret = 0;
1600
1601 #if FF_API_AVCTX_TIMEBASE
1602 if (avctx->framerate.num > 0 && avctx->framerate.den > 0)
1603 avctx->time_base = av_inv_q(avctx->framerate);
1604 #endif
1605
1606 return ret;
1607 }
1608
1609 int attribute_align_arg avcodec_decode_audio4(AVCodecContext *avctx,
1610 AVFrame *frame,
1611 int *got_frame_ptr,
1612 AVPacket *avpkt)
1613 {
1614 AVCodecInternal *avci = avctx->internal;
1615 int ret = 0;
1616
1617 *got_frame_ptr = 0;
1618
1619 if (!avctx->codec->decode) {
1620 av_log(avctx, AV_LOG_ERROR, "This decoder requires using the avcodec_send_packet() API.\n");
1621 return AVERROR(ENOSYS);
1622 }
1623
1624 avctx->internal->pkt = avpkt;
1625
1626 if (!avpkt->data && avpkt->size) {
1627 av_log(avctx, AV_LOG_ERROR, "invalid packet: NULL data, size != 0\n");
1628 return AVERROR(EINVAL);
1629 }
1630
1631 ret = apply_param_change(avctx, avpkt);
1632 if (ret < 0)
1633 return ret;
1634
1635 av_frame_unref(frame);
1636
1637 if ((avctx->codec->capabilities & AV_CODEC_CAP_DELAY) || avpkt->size) {
1638 ret = avctx->codec->decode(avctx, frame, got_frame_ptr, avpkt);
1639 if (ret >= 0 && *got_frame_ptr) {
1640 avctx->frame_number++;
1641 frame->pkt_dts = avpkt->dts;
1642 if (frame->format == AV_SAMPLE_FMT_NONE)
1643 frame->format = avctx->sample_fmt;
1644
1645 if (!avctx->refcounted_frames) {
1646 int err = unrefcount_frame(avci, frame);
1647 if (err < 0)
1648 return err;
1649 }
1650 } else
1651 av_frame_unref(frame);
1652 }
1653
1654
1655 return ret;
1656 }
1657
1658 int avcodec_decode_subtitle2(AVCodecContext *avctx, AVSubtitle *sub,
1659 int *got_sub_ptr,
1660 AVPacket *avpkt)
1661 {
1662 int ret;
1663
1664 avctx->internal->pkt = avpkt;
1665 *got_sub_ptr = 0;
1666 ret = avctx->codec->decode(avctx, sub, got_sub_ptr, avpkt);
1667 if (*got_sub_ptr)
1668 avctx->frame_number++;
1669 return ret;
1670 }
1671
1672 void avsubtitle_free(AVSubtitle *sub)
1673 {
1674 int i;
1675
1676 for (i = 0; i < sub->num_rects; i++) {
1677 av_freep(&sub->rects[i]->data[0]);
1678 av_freep(&sub->rects[i]->data[1]);
1679 av_freep(&sub->rects[i]->data[2]);
1680 av_freep(&sub->rects[i]->data[3]);
1681 av_freep(&sub->rects[i]->text);
1682 av_freep(&sub->rects[i]->ass);
1683 av_freep(&sub->rects[i]);
1684 }
1685
1686 av_freep(&sub->rects);
1687
1688 memset(sub, 0, sizeof(AVSubtitle));
1689 }
1690
1691 static int do_decode(AVCodecContext *avctx, AVPacket *pkt)
1692 {
1693 int got_frame;
1694 int ret;
1695
1696 av_assert0(!avctx->internal->buffer_frame->buf[0]);
1697
1698 if (!pkt)
1699 pkt = avctx->internal->buffer_pkt;
1700
1701 // This is the lesser evil. The field is for compatibility with legacy users
1702 // of the legacy API, and users using the new API should not be forced to
1703 // even know about this field.
1704 avctx->refcounted_frames = 1;
1705
1706 // Some codecs (at least wma lossless) will crash when feeding drain packets
1707 // after EOF was signaled.
1708 if (avctx->internal->draining_done)
1709 return AVERROR_EOF;
1710
1711 if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
1712 ret = avcodec_decode_video2(avctx, avctx->internal->buffer_frame,
1713 &got_frame, pkt);
1714 if (ret >= 0)
1715 ret = pkt->size;
1716 } else if (avctx->codec_type == AVMEDIA_TYPE_AUDIO) {
1717 ret = avcodec_decode_audio4(avctx, avctx->internal->buffer_frame,
1718 &got_frame, pkt);
1719 } else {
1720 ret = AVERROR(EINVAL);
1721 }
1722
1723 if (ret < 0)
1724 return ret;
1725
1726 if (avctx->internal->draining && !got_frame)
1727 avctx->internal->draining_done = 1;
1728
1729 if (ret >= pkt->size) {
1730 av_packet_unref(avctx->internal->buffer_pkt);
1731 } else {
1732 int consumed = ret;
1733
1734 if (pkt != avctx->internal->buffer_pkt) {
1735 av_packet_unref(avctx->internal->buffer_pkt);
1736 if ((ret = av_packet_ref(avctx->internal->buffer_pkt, pkt)) < 0)
1737 return ret;
1738 }
1739
1740 avctx->internal->buffer_pkt->data += consumed;
1741 avctx->internal->buffer_pkt->size -= consumed;
1742 avctx->internal->buffer_pkt->pts = AV_NOPTS_VALUE;
1743 avctx->internal->buffer_pkt->dts = AV_NOPTS_VALUE;
1744 }
1745
1746 if (got_frame)
1747 av_assert0(avctx->internal->buffer_frame->buf[0]);
1748
1749 return 0;
1750 }
1751
1752 int attribute_align_arg avcodec_send_packet(AVCodecContext *avctx, const AVPacket *avpkt)
1753 {
1754 int ret;
1755
1756 if (!avcodec_is_open(avctx) || !av_codec_is_decoder(avctx->codec))
1757 return AVERROR(EINVAL);
1758
1759 if (avctx->internal->draining)
1760 return AVERROR_EOF;
1761
1762 if (!avpkt || !avpkt->size) {
1763 avctx->internal->draining = 1;
1764 avpkt = NULL;
1765
1766 if (!(avctx->codec->capabilities & AV_CODEC_CAP_DELAY))
1767 return 0;
1768 }
1769
1770 if (avctx->codec->send_packet) {
1771 if (avpkt) {
1772 ret = apply_param_change(avctx, (AVPacket *)avpkt);
1773 if (ret < 0)
1774 return ret;
1775 }
1776 return avctx->codec->send_packet(avctx, avpkt);
1777 }
1778
1779 // Emulation via old API. Assume avpkt is likely not refcounted, while
1780 // decoder output is always refcounted, and avoid copying.
1781
1782 if (avctx->internal->buffer_pkt->size || avctx->internal->buffer_frame->buf[0])
1783 return AVERROR(EAGAIN);
1784
1785 // The goal is decoding the first frame of the packet without using memcpy,
1786 // because the common case is having only 1 frame per packet (especially
1787 // with video, but audio too). In other cases, it can't be avoided, unless
1788 // the user is feeding refcounted packets.
1789 return do_decode(avctx, (AVPacket *)avpkt);
1790 }
1791
1792 int attribute_align_arg avcodec_receive_frame(AVCodecContext *avctx, AVFrame *frame)
1793 {
1794 int ret;
1795
1796 av_frame_unref(frame);
1797
1798 if (!avcodec_is_open(avctx) || !av_codec_is_decoder(avctx->codec))
1799 return AVERROR(EINVAL);
1800
1801 if (avctx->codec->receive_frame) {
1802 if (avctx->internal->draining && !(avctx->codec->capabilities & AV_CODEC_CAP_DELAY))
1803 return AVERROR_EOF;
1804 return avctx->codec->receive_frame(avctx, frame);
1805 }
1806
1807 // Emulation via old API.
1808
1809 if (!avctx->internal->buffer_frame->buf[0]) {
1810 if (!avctx->internal->buffer_pkt->size && !avctx->internal->draining)
1811 return AVERROR(EAGAIN);
1812
1813 while (1) {
1814 if ((ret = do_decode(avctx, avctx->internal->buffer_pkt)) < 0) {
1815 av_packet_unref(avctx->internal->buffer_pkt);
1816 return ret;
1817 }
1818 // Some audio decoders may consume partial data without returning
1819 // a frame (fate-wmapro-2ch). There is no way to make the caller
1820 // call avcodec_receive_frame() again without returning a frame,
1821 // so try to decode more in these cases.
1822 if (avctx->internal->buffer_frame->buf[0] ||
1823 !avctx->internal->buffer_pkt->size)
1824 break;
1825 }
1826 }
1827
1828 if (!avctx->internal->buffer_frame->buf[0])
1829 return avctx->internal->draining ? AVERROR_EOF : AVERROR(EAGAIN);
1830
1831 av_frame_move_ref(frame, avctx->internal->buffer_frame);
1832 return 0;
1833 }
1834
1835 static int do_encode(AVCodecContext *avctx, const AVFrame *frame, int *got_packet)
1836 {
1837 int ret;
1838 *got_packet = 0;
1839
1840 av_packet_unref(avctx->internal->buffer_pkt);
1841 avctx->internal->buffer_pkt_valid = 0;
1842
1843 if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
1844 ret = avcodec_encode_video2(avctx, avctx->internal->buffer_pkt,
1845 frame, got_packet);
1846 } else if (avctx->codec_type == AVMEDIA_TYPE_AUDIO) {
1847 ret = avcodec_encode_audio2(avctx, avctx->internal->buffer_pkt,
1848 frame, got_packet);
1849 } else {
1850 ret = AVERROR(EINVAL);
1851 }
1852
1853 if (ret >= 0 && *got_packet) {
1854 // Encoders must always return ref-counted buffers.
1855 // Side-data only packets have no data and can be not ref-counted.
1856 av_assert0(!avctx->internal->buffer_pkt->data || avctx->internal->buffer_pkt->buf);
1857 avctx->internal->buffer_pkt_valid = 1;
1858 ret = 0;
1859 } else {
1860 av_packet_unref(avctx->internal->buffer_pkt);
1861 }
1862
1863 return ret;
1864 }
1865
1866 int attribute_align_arg avcodec_send_frame(AVCodecContext *avctx, const AVFrame *frame)
1867 {
1868 if (!avcodec_is_open(avctx) || !av_codec_is_encoder(avctx->codec))
1869 return AVERROR(EINVAL);
1870
1871 if (avctx->internal->draining)
1872 return AVERROR_EOF;
1873
1874 if (!frame) {
1875 avctx->internal->draining = 1;
1876
1877 if (!(avctx->codec->capabilities & AV_CODEC_CAP_DELAY))
1878 return 0;
1879 }
1880
1881 if (avctx->codec->send_frame)
1882 return avctx->codec->send_frame(avctx, frame);
1883
1884 // Emulation via old API. Do it here instead of avcodec_receive_packet, because:
1885 // 1. if the AVFrame is not refcounted, the copying will be much more
1886 // expensive than copying the packet data
1887 // 2. assume few users use non-refcounted AVPackets, so usually no copy is
1888 // needed
1889
1890 if (avctx->internal->buffer_pkt_valid)
1891 return AVERROR(EAGAIN);
1892
1893 return do_encode(avctx, frame, &(int){0});
1894 }
1895
1896 int attribute_align_arg avcodec_receive_packet(AVCodecContext *avctx, AVPacket *avpkt)
1897 {
1898 av_packet_unref(avpkt);
1899
1900 if (!avcodec_is_open(avctx) || !av_codec_is_encoder(avctx->codec))
1901 return AVERROR(EINVAL);
1902
1903 if (avctx->codec->receive_packet) {
1904 if (avctx->internal->draining && !(avctx->codec->capabilities & AV_CODEC_CAP_DELAY))
1905 return AVERROR_EOF;
1906 return avctx->codec->receive_packet(avctx, avpkt);
1907 }
1908
1909 // Emulation via old API.
1910
1911 if (!avctx->internal->buffer_pkt_valid) {
1912 int got_packet;
1913 int ret;
1914 if (!avctx->internal->draining)
1915 return AVERROR(EAGAIN);
1916 ret = do_encode(avctx, NULL, &got_packet);
1917 if (ret < 0)
1918 return ret;
1919 if (ret >= 0 && !got_packet)
1920 return AVERROR_EOF;
1921 }
1922
1923 av_packet_move_ref(avpkt, avctx->internal->buffer_pkt);
1924 avctx->internal->buffer_pkt_valid = 0;
1925 return 0;
1926 }
1927
1928 av_cold int avcodec_close(AVCodecContext *avctx)
1929 {
1930 int i;
1931
1932 if (avcodec_is_open(avctx)) {
1933 FramePool *pool = avctx->internal->pool;
1934
1935 if (HAVE_THREADS && avctx->internal->thread_ctx)
1936 ff_thread_free(avctx);
1937 if (avctx->codec && avctx->codec->close)
1938 avctx->codec->close(avctx);
1939 av_frame_free(&avctx->internal->to_free);
1940 av_frame_free(&avctx->internal->buffer_frame);
1941 av_packet_free(&avctx->internal->buffer_pkt);
1942 for (i = 0; i < FF_ARRAY_ELEMS(pool->pools); i++)
1943 av_buffer_pool_uninit(&pool->pools[i]);
1944 av_freep(&avctx->internal->pool);
1945
1946 if (avctx->hwaccel && avctx->hwaccel->uninit)
1947 avctx->hwaccel->uninit(avctx);
1948 av_freep(&avctx->internal->hwaccel_priv_data);
1949
1950 av_freep(&avctx->internal);
1951 }
1952
1953 for (i = 0; i < avctx->nb_coded_side_data; i++)
1954 av_freep(&avctx->coded_side_data[i].data);
1955 av_freep(&avctx->coded_side_data);
1956 avctx->nb_coded_side_data = 0;
1957
1958 av_buffer_unref(&avctx->hw_frames_ctx);
1959
1960 if (avctx->priv_data && avctx->codec && avctx->codec->priv_class)
1961 av_opt_free(avctx->priv_data);
1962 av_opt_free(avctx);
1963 av_freep(&avctx->priv_data);
1964 if (av_codec_is_encoder(avctx->codec)) {
1965 av_freep(&avctx->extradata);
1966 #if FF_API_CODED_FRAME
1967 FF_DISABLE_DEPRECATION_WARNINGS
1968 av_frame_free(&avctx->coded_frame);
1969 FF_ENABLE_DEPRECATION_WARNINGS
1970 #endif
1971 }
1972 avctx->codec = NULL;
1973 avctx->active_thread_type = 0;
1974
1975 return 0;
1976 }
1977
1978 static AVCodec *find_encdec(enum AVCodecID id, int encoder)
1979 {
1980 AVCodec *p, *experimental = NULL;
1981 p = first_avcodec;
1982 while (p) {
1983 if ((encoder ? av_codec_is_encoder(p) : av_codec_is_decoder(p)) &&
1984 p->id == id) {
1985 if (p->capabilities & AV_CODEC_CAP_EXPERIMENTAL && !experimental) {
1986 experimental = p;
1987 } else
1988 return p;
1989 }
1990 p = p->next;
1991 }
1992 return experimental;
1993 }
1994
1995 AVCodec *avcodec_find_encoder(enum AVCodecID id)
1996 {
1997 return find_encdec(id, 1);
1998 }
1999
2000 AVCodec *avcodec_find_encoder_by_name(const char *name)
2001 {
2002 AVCodec *p;
2003 if (!name)
2004 return NULL;
2005 p = first_avcodec;
2006 while (p) {
2007 if (av_codec_is_encoder(p) && strcmp(name, p->name) == 0)
2008 return p;
2009 p = p->next;
2010 }
2011 return NULL;
2012 }
2013
2014 AVCodec *avcodec_find_decoder(enum AVCodecID id)
2015 {
2016 return find_encdec(id, 0);
2017 }
2018
2019 AVCodec *avcodec_find_decoder_by_name(const char *name)
2020 {
2021 AVCodec *p;
2022 if (!name)
2023 return NULL;
2024 p = first_avcodec;
2025 while (p) {
2026 if (av_codec_is_decoder(p) && strcmp(name, p->name) == 0)
2027 return p;
2028 p = p->next;
2029 }
2030 return NULL;
2031 }
2032
2033 static int get_bit_rate(AVCodecContext *ctx)
2034 {
2035 int bit_rate;
2036 int bits_per_sample;
2037
2038 switch (ctx->codec_type) {
2039 case AVMEDIA_TYPE_VIDEO:
2040 case AVMEDIA_TYPE_DATA:
2041 case AVMEDIA_TYPE_SUBTITLE:
2042 case AVMEDIA_TYPE_ATTACHMENT:
2043 bit_rate = ctx->bit_rate;
2044 break;
2045 case AVMEDIA_TYPE_AUDIO:
2046 bits_per_sample = av_get_bits_per_sample(ctx->codec_id);
2047 bit_rate = bits_per_sample ? ctx->sample_rate * ctx->channels * bits_per_sample : ctx->bit_rate;
2048 break;
2049 default:
2050 bit_rate = 0;
2051 break;
2052 }
2053 return bit_rate;
2054 }
2055
2056 size_t av_get_codec_tag_string(char *buf, size_t buf_size, unsigned int codec_tag)
2057 {
2058 int i, len, ret = 0;
2059
2060 #define TAG_PRINT(x) \
2061 (((x) >= '0' && (x) <= '9') || \
2062 ((x) >= 'a' && (x) <= 'z') || ((x) >= 'A' && (x) <= 'Z') || \
2063 ((x) == '.' || (x) == ' '))
2064
2065 for (i = 0; i < 4; i++) {
2066 len = snprintf(buf, buf_size,
2067 TAG_PRINT(codec_tag & 0xFF) ? "%c" : "[%d]", codec_tag & 0xFF);
2068 buf += len;
2069 buf_size = buf_size > len ? buf_size - len : 0;
2070 ret += len;
2071 codec_tag >>= 8;
2072 }
2073 return ret;
2074 }
2075
2076 void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)
2077 {
2078 const char *codec_name;
2079 const char *profile = NULL;
2080 char buf1[32];
2081 int bitrate;
2082 int new_line = 0;
2083 AVRational display_aspect_ratio;
2084 const AVCodecDescriptor *desc = avcodec_descriptor_get(enc->codec_id);
2085
2086 if (desc) {
2087 codec_name = desc->name;
2088 profile = avcodec_profile_name(enc->codec_id, enc->profile);
2089 } else if (enc->codec_id == AV_CODEC_ID_MPEG2TS) {
2090 /* fake mpeg2 transport stream codec (currently not
2091 * registered) */
2092 codec_name = "mpeg2ts";
2093 } else {
2094 /* output avi tags */
2095 char tag_buf[32];
2096 av_get_codec_tag_string(tag_buf, sizeof(tag_buf), enc->codec_tag);
2097 snprintf(buf1, sizeof(buf1), "%s / 0x%04X", tag_buf, enc->codec_tag);
2098 codec_name = buf1;
2099 }
2100
2101 switch (enc->codec_type) {
2102 case AVMEDIA_TYPE_VIDEO:
2103 snprintf(buf, buf_size,
2104 "Video: %s%s",
2105 codec_name, enc->mb_decision ? " (hq)" : "");
2106 if (profile)
2107 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2108 " (%s)", profile);
2109 if (enc->codec_tag) {
2110 char tag_buf[32];
2111 av_get_codec_tag_string(tag_buf, sizeof(tag_buf), enc->codec_tag);
2112 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2113 " [%s / 0x%04X]", tag_buf, enc->codec_tag);
2114 }
2115
2116 av_strlcat(buf, "\n ", buf_size);
2117 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2118 "%s", enc->pix_fmt == AV_PIX_FMT_NONE ? "none" :
2119 av_get_pix_fmt_name(enc->pix_fmt));
2120
2121 if (enc->color_range != AVCOL_RANGE_UNSPECIFIED)
2122 snprintf(buf + strlen(buf), buf_size - strlen(buf), ", %s",
2123 av_color_range_name(enc->color_range));
2124 if (enc->colorspace != AVCOL_SPC_UNSPECIFIED ||
2125 enc->color_primaries != AVCOL_PRI_UNSPECIFIED ||
2126 enc->color_trc != AVCOL_TRC_UNSPECIFIED) {
2127 new_line = 1;
2128 snprintf(buf + strlen(buf), buf_size - strlen(buf), ", %s/%s/%s",
2129 av_color_space_name(enc->colorspace),
2130 av_color_primaries_name(enc->color_primaries),
2131 av_color_transfer_name(enc->color_trc));
2132 }
2133 if (av_log_get_level() >= AV_LOG_DEBUG &&
2134 enc->chroma_sample_location != AVCHROMA_LOC_UNSPECIFIED)
2135 snprintf(buf + strlen(buf), buf_size - strlen(buf), ", %s",
2136 av_chroma_location_name(enc->chroma_sample_location));
2137
2138 if (enc->width) {
2139 av_strlcat(buf, new_line ? "\n " : ", ", buf_size);
2140
2141 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2142 "%dx%d",
2143 enc->width, enc->height);
2144
2145 if (av_log_get_level() >= AV_LOG_VERBOSE &&
2146 (enc->width != enc->coded_width ||
2147 enc->height != enc->coded_height))
2148 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2149 " (%dx%d)", enc->coded_width, enc->coded_height);
2150
2151 if (enc->sample_aspect_ratio.num) {
2152 av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
2153 enc->width * enc->sample_aspect_ratio.num,
2154 enc->height * enc->sample_aspect_ratio.den,
2155 1024 * 1024);
2156 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2157 " [PAR %d:%d DAR %d:%d]",
2158 enc->sample_aspect_ratio.num, enc->sample_aspect_ratio.den,
2159 display_aspect_ratio.num, display_aspect_ratio.den);
2160 }
2161 if (av_log_get_level() >= AV_LOG_DEBUG) {
2162 int g = av_gcd(enc->time_base.num, enc->time_base.den);
2163 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2164 ", %d/%d",
2165 enc->time_base.num / g, enc->time_base.den / g);
2166 }
2167 }
2168 if (encode) {
2169 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2170 ", q=%d-%d", enc->qmin, enc->qmax);
2171 }
2172 break;
2173 case AVMEDIA_TYPE_AUDIO:
2174 snprintf(buf, buf_size,
2175 "Audio: %s",
2176 codec_name);
2177 if (profile)
2178 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2179 " (%s)", profile);
2180 if (enc->codec_tag) {
2181 char tag_buf[32];
2182 av_get_codec_tag_string(tag_buf, sizeof(tag_buf), enc->codec_tag);
2183 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2184 " [%s / 0x%04X]", tag_buf, enc->codec_tag);
2185 }
2186
2187 av_strlcat(buf, "\n ", buf_size);
2188 if (enc->sample_rate) {
2189 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2190 "%d Hz, ", enc->sample_rate);
2191 }
2192 av_get_channel_layout_string(buf + strlen(buf), buf_size - strlen(buf), enc->channels, enc->channel_layout);
2193 if (enc->sample_fmt != AV_SAMPLE_FMT_NONE) {
2194 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2195 ", %s", av_get_sample_fmt_name(enc->sample_fmt));
2196 }
2197 break;
2198 case AVMEDIA_TYPE_DATA:
2199 snprintf(buf, buf_size, "Data: %s", codec_name);
2200 break;
2201 case AVMEDIA_TYPE_SUBTITLE:
2202 snprintf(buf, buf_size, "Subtitle: %s", codec_name);
2203 break;
2204 case AVMEDIA_TYPE_ATTACHMENT:
2205 snprintf(buf, buf_size, "Attachment: %s", codec_name);
2206 break;
2207 default:
2208 snprintf(buf, buf_size, "Invalid Codec type %d", enc->codec_type);
2209 return;
2210 }
2211 if (encode) {
2212 if (enc->flags & AV_CODEC_FLAG_PASS1)
2213 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2214 ", pass 1");
2215 if (enc->flags & AV_CODEC_FLAG_PASS2)
2216 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2217 ", pass 2");
2218 }
2219 bitrate = get_bit_rate(enc);
2220 if (bitrate != 0) {
2221 snprintf(buf + strlen(buf), buf_size - strlen(buf),
2222 ", %d kb/s", bitrate / 1000);
2223 }
2224 }
2225
2226 const char *av_get_profile_name(const AVCodec *codec, int profile)
2227 {
2228 const AVProfile *p;
2229 if (profile == FF_PROFILE_UNKNOWN || !codec->profiles)
2230 return NULL;
2231
2232 for (p = codec->profiles; p->profile != FF_PROFILE_UNKNOWN; p++)
2233 if (p->profile == profile)
2234 return p->name;
2235
2236 return NULL;
2237 }
2238
2239 const char *avcodec_profile_name(enum AVCodecID codec_id, int profile)
2240 {
2241 const AVCodecDescriptor *desc = avcodec_descriptor_get(codec_id);
2242 const AVProfile *p;
2243
2244 if (profile == FF_PROFILE_UNKNOWN || !desc || !desc->profiles)
2245 return NULL;
2246
2247 for (p = desc->profiles; p->profile != FF_PROFILE_UNKNOWN; p++)
2248 if (p->profile == profile)
2249 return p->name;
2250
2251 return NULL;
2252 }
2253
2254 unsigned avcodec_version(void)
2255 {
2256 return LIBAVCODEC_VERSION_INT;
2257 }
2258
2259 const char *avcodec_configuration(void)
2260 {
2261 return LIBAV_CONFIGURATION;
2262 }
2263
2264 const char *avcodec_license(void)
2265 {
2266 #define LICENSE_PREFIX "libavcodec license: "
2267 return LICENSE_PREFIX LIBAV_LICENSE + sizeof(LICENSE_PREFIX) - 1;
2268 }
2269
2270 void avcodec_flush_buffers(AVCodecContext *avctx)
2271 {
2272 avctx->internal->draining = 0;
2273 avctx->internal->draining_done = 0;
2274 av_frame_unref(avctx->internal->buffer_frame);
2275 av_packet_unref(avctx->internal->buffer_pkt);
2276 avctx->internal->buffer_pkt_valid = 0;
2277
2278 if (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME)
2279 ff_thread_flush(avctx);
2280 else if (avctx->codec->flush)
2281 avctx->codec->flush(avctx);
2282
2283 if (!avctx->refcounted_frames)
2284 av_frame_unref(avctx->internal->to_free);
2285 }
2286
2287 int av_get_exact_bits_per_sample(enum AVCodecID codec_id)
2288 {
2289 switch (codec_id) {
2290 case AV_CODEC_ID_ADPCM_CT:
2291 case AV_CODEC_ID_ADPCM_IMA_APC:
2292 case AV_CODEC_ID_ADPCM_IMA_EA_SEAD:
2293 case AV_CODEC_ID_ADPCM_IMA_WS:
2294 case AV_CODEC_ID_ADPCM_G722:
2295 case AV_CODEC_ID_ADPCM_YAMAHA:
2296 return 4;
2297 case AV_CODEC_ID_PCM_ALAW:
2298 case AV_CODEC_ID_PCM_MULAW:
2299 case AV_CODEC_ID_PCM_S8:
2300 case AV_CODEC_ID_PCM_U8:
2301 case AV_CODEC_ID_PCM_ZORK:
2302 return 8;
2303 case AV_CODEC_ID_PCM_S16BE:
2304 case AV_CODEC_ID_PCM_S16BE_PLANAR:
2305 case AV_CODEC_ID_PCM_S16LE:
2306 case AV_CODEC_ID_PCM_S16LE_PLANAR:
2307 case AV_CODEC_ID_PCM_U16BE:
2308 case AV_CODEC_ID_PCM_U16LE:
2309 return 16;
2310 case AV_CODEC_ID_PCM_S24DAUD:
2311 case AV_CODEC_ID_PCM_S24BE:
2312 case AV_CODEC_ID_PCM_S24LE:
2313 case AV_CODEC_ID_PCM_S24LE_PLANAR:
2314 case AV_CODEC_ID_PCM_U24BE:
2315 case AV_CODEC_ID_PCM_U24LE:
2316 return 24;
2317 case AV_CODEC_ID_PCM_S32BE:
2318 case AV_CODEC_ID_PCM_S32LE:
2319 case AV_CODEC_ID_PCM_S32LE_PLANAR:
2320 case AV_CODEC_ID_PCM_U32BE:
2321 case AV_CODEC_ID_PCM_U32LE:
2322 case AV_CODEC_ID_PCM_F32BE:
2323 case AV_CODEC_ID_PCM_F32LE:
2324 return 32;
2325 case AV_CODEC_ID_PCM_F64BE:
2326 case AV_CODEC_ID_PCM_F64LE:
2327 return 64;
2328 default:
2329 return 0;
2330 }
2331 }
2332
2333 int av_get_bits_per_sample(enum AVCodecID codec_id)
2334 {
2335 switch (codec_id) {
2336 case AV_CODEC_ID_ADPCM_SBPRO_2:
2337 return 2;
2338 case AV_CODEC_ID_ADPCM_SBPRO_3:
2339 return 3;
2340 case AV_CODEC_ID_ADPCM_SBPRO_4:
2341 case AV_CODEC_ID_ADPCM_IMA_WAV:
2342 case AV_CODEC_ID_ADPCM_IMA_QT:
2343 case AV_CODEC_ID_ADPCM_SWF:
2344 case AV_CODEC_ID_ADPCM_MS:
2345 return 4;
2346 default:
2347 return av_get_exact_bits_per_sample(codec_id);
2348 }
2349 }
2350
2351 static int get_audio_frame_duration(enum AVCodecID id, int sr, int ch, int ba,
2352 uint32_t tag, int bits_per_coded_sample, int frame_bytes)
2353 {
2354 int bps = av_get_exact_bits_per_sample(id);
2355
2356 /* codecs with an exact constant bits per sample */
2357 if (bps > 0 && ch > 0 && frame_bytes > 0)
2358 return (frame_bytes * 8) / (bps * ch);
2359 bps = bits_per_coded_sample;
2360
2361 /* codecs with a fixed packet duration */
2362 switch (id) {
2363 case AV_CODEC_ID_ADPCM_ADX: return 32;
2364 case AV_CODEC_ID_ADPCM_IMA_QT: return 64;
2365 case AV_CODEC_ID_ADPCM_EA_XAS: return 128;
2366 case AV_CODEC_ID_AMR_NB:
2367 case AV_CODEC_ID_GSM:
2368 case AV_CODEC_ID_QCELP:
2369 case AV_CODEC_ID_RA_144:
2370 case AV_CODEC_ID_RA_288: return 160;
2371 case AV_CODEC_ID_IMC: return 256;
2372 case AV_CODEC_ID_AMR_WB:
2373 case AV_CODEC_ID_GSM_MS: return 320;
2374 case AV_CODEC_ID_MP1: return 384;
2375 case AV_CODEC_ID_ATRAC1: return 512;
2376 case AV_CODEC_ID_ATRAC3: return 1024;
2377 case AV_CODEC_ID_MP2:
2378 case AV_CODEC_ID_MUSEPACK7: return 1152;
2379 case AV_CODEC_ID_AC3: return 1536;
2380 }
2381
2382 if (sr > 0) {
2383 /* calc from sample rate */
2384 if (id == AV_CODEC_ID_TTA)
2385 return 256 * sr / 245;
2386
2387 if (ch > 0) {
2388 /* calc from sample rate and channels */
2389 if (id == AV_CODEC_ID_BINKAUDIO_DCT)
2390 return (480 << (sr / 22050)) / ch;
2391 }
2392 }
2393
2394 if (ba > 0) {
2395 /* calc from block_align */
2396 if (id == AV_CODEC_ID_SIPR) {
2397 switch (ba) {
2398 case 20: return 160;
2399 case 19: return 144;
2400 case 29: return 288;
2401 case 37: return 480;
2402 }
2403 } else if (id == AV_CODEC_ID_ILBC) {
2404 switch (ba) {
2405 case 38: return 160;
2406 case 50: return 240;
2407 }
2408 }
2409 }
2410
2411 if (frame_bytes > 0) {
2412 /* calc from frame_bytes only */
2413 if (id == AV_CODEC_ID_TRUESPEECH)
2414 return 240 * (frame_bytes / 32);
2415 if (id == AV_CODEC_ID_NELLYMOSER)
2416 return 256 * (frame_bytes / 64);
2417
2418 if (bps > 0) {
2419 /* calc from frame_bytes and bits_per_coded_sample */
2420 if (id == AV_CODEC_ID_ADPCM_G726)
2421 return frame_bytes * 8 / bps;
2422 }
2423
2424 if (ch > 0) {
2425 /* calc from frame_bytes and channels */
2426 switch (id) {
2427 case AV_CODEC_ID_ADPCM_4XM:
2428 case AV_CODEC_ID_ADPCM_IMA_ISS:
2429 return (frame_bytes - 4 * ch) * 2 / ch;
2430 case AV_CODEC_ID_ADPCM_IMA_SMJPEG:
2431 return (frame_bytes - 4) * 2 / ch;
2432 case AV_CODEC_ID_ADPCM_IMA_AMV:
2433 return (frame_bytes - 8) * 2 / ch;
2434 case AV_CODEC_ID_ADPCM_XA:
2435 return (frame_bytes / 128) * 224 / ch;
2436 case AV_CODEC_ID_INTERPLAY_DPCM:
2437 return (frame_bytes - 6 - ch) / ch;
2438 case AV_CODEC_ID_ROQ_DPCM:
2439 return (frame_bytes - 8) / ch;
2440 case AV_CODEC_ID_XAN_DPCM:
2441 return (frame_bytes - 2 * ch) / ch;
2442 case AV_CODEC_ID_MACE3:
2443 return 3 * frame_bytes / ch;
2444 case AV_CODEC_ID_MACE6:
2445 return 6 * frame_bytes / ch;
2446 case AV_CODEC_ID_PCM_LXF:
2447 return 2 * (frame_bytes / (5 * ch));
2448 }
2449
2450 if (tag) {
2451 /* calc from frame_bytes, channels, and codec_tag */
2452 if (id == AV_CODEC_ID_SOL_DPCM) {
2453 if (tag == 3)
2454 return frame_bytes / ch;
2455 else
2456 return frame_bytes * 2 / ch;
2457 }
2458 }
2459
2460 if (ba > 0) {
2461 /* calc from frame_bytes, channels, and block_align */
2462 int blocks = frame_bytes / ba;
2463 switch (id) {
2464 case AV_CODEC_ID_ADPCM_IMA_WAV:
2465 return blocks * (1 + (ba - 4 * ch) / (4 * ch) * 8);
2466 case AV_CODEC_ID_ADPCM_IMA_DK3:
2467 return blocks * (((ba - 16) * 2 / 3 * 4) / ch);
2468 case AV_CODEC_ID_ADPCM_IMA_DK4:
2469 return blocks * (1 + (ba - 4 * ch) * 2 / ch);
2470 case AV_CODEC_ID_ADPCM_MS:
2471 return blocks * (2 + (ba - 7 * ch) * 2 / ch);
2472 }
2473 }
2474
2475 if (bps > 0) {
2476 /* calc from frame_bytes, channels, and bits_per_coded_sample */
2477 switch (id) {
2478 case AV_CODEC_ID_PCM_DVD:
2479 return 2 * (frame_bytes / ((bps * 2 / 8) * ch));
2480 case AV_CODEC_ID_PCM_BLURAY:
2481 return frame_bytes / ((FFALIGN(ch, 2) * bps) / 8);
2482 case AV_CODEC_ID_S302M:
2483 return 2 * (frame_bytes / ((bps + 4) / 4)) / ch;
2484 }
2485 }
2486 }
2487 }
2488
2489 return 0;
2490 }
2491
2492 int av_get_audio_frame_duration(AVCodecContext *avctx, int frame_bytes)
2493 {
2494 return get_audio_frame_duration(avctx->codec_id, avctx->sample_rate,
2495 avctx->channels, avctx->block_align,
2496 avctx->codec_tag, avctx->bits_per_coded_sample,
2497 frame_bytes);
2498 }
2499
2500 int av_get_audio_frame_duration2(AVCodecParameters *par, int frame_bytes)
2501 {
2502 return get_audio_frame_duration(par->codec_id, par->sample_rate,
2503 par->channels, par->block_align,
2504 par->codec_tag, par->bits_per_coded_sample,
2505 frame_bytes);
2506 }
2507
2508 #if !HAVE_THREADS
2509 int ff_thread_init(AVCodecContext *s)
2510 {
2511 return -1;
2512 }
2513
2514 #endif
2515
2516 unsigned int av_xiphlacing(unsigned char *s, unsigned int v)
2517 {
2518 unsigned int n = 0;
2519
2520 while (v >= 0xff) {
2521 *s++ = 0xff;
2522 v -= 0xff;
2523 n++;
2524 }
2525 *s = v;
2526 n++;
2527 return n;
2528 }
2529
2530 int ff_match_2uint16(const uint16_t(*tab)[2], int size, int a, int b)
2531 {
2532 int i;
2533 for (i = 0; i < size && !(tab[i][0] == a && tab[i][1] == b); i++) ;
2534 return i;
2535 }
2536
2537 #if FF_API_MISSING_SAMPLE
2538 FF_DISABLE_DEPRECATION_WARNINGS
2539 void av_log_missing_feature(void *avc, const char *feature, int want_sample)
2540 {
2541 av_log(avc, AV_LOG_WARNING, "%s is not implemented. Update your Libav "
2542 "version to the newest one from Git. If the problem still "
2543 "occurs, it means that your file has a feature which has not "
2544 "been implemented.\n", feature);
2545 if(want_sample)
2546 av_log_ask_for_sample(avc, NULL);
2547 }
2548
2549 void av_log_ask_for_sample(void *avc, const char *msg, ...)
2550 {
2551 va_list argument_list;
2552
2553 va_start(argument_list, msg);
2554
2555 if (msg)
2556 av_vlog(avc, AV_LOG_WARNING, msg, argument_list);
2557 av_log(avc, AV_LOG_WARNING, "If you want to help, upload a sample "
2558 "of this file to ftp://upload.libav.org/incoming/ "
2559 "and contact the libav-devel mailing list.\n");
2560
2561 va_end(argument_list);
2562 }
2563 FF_ENABLE_DEPRECATION_WARNINGS
2564 #endif /* FF_API_MISSING_SAMPLE */
2565
2566 static AVHWAccel *first_hwaccel = NULL;
2567
2568 void av_register_hwaccel(AVHWAccel *hwaccel)
2569 {
2570 AVHWAccel **p = &first_hwaccel;
2571 while (*p)
2572 p = &(*p)->next;
2573 *p = hwaccel;
2574 hwaccel->next = NULL;
2575 }
2576
2577 AVHWAccel *av_hwaccel_next(const AVHWAccel *hwaccel)
2578 {
2579 return hwaccel ? hwaccel->next : first_hwaccel;
2580 }
2581
2582 int av_lockmgr_register(int (*cb)(void **mutex, enum AVLockOp op))
2583 {
2584 if (lockmgr_cb) {
2585 // There is no good way to rollback a failure to destroy the
2586 // mutex, so we ignore failures.
2587 lockmgr_cb(&codec_mutex, AV_LOCK_DESTROY);
2588 lockmgr_cb(&avformat_mutex, AV_LOCK_DESTROY);
2589 lockmgr_cb = NULL;
2590 codec_mutex = NULL;
2591 avformat_mutex = NULL;
2592 }
2593
2594 if (cb) {
2595 void *new_codec_mutex = NULL;
2596 void *new_avformat_mutex = NULL;
2597 int err;
2598 if (err = cb(&new_codec_mutex, AV_LOCK_CREATE)) {
2599 return err > 0 ? AVERROR_UNKNOWN : err;
2600 }
2601 if (err = cb(&new_avformat_mutex, AV_LOCK_CREATE)) {
2602 // Ignore failures to destroy the newly created mutex.
2603 cb(&new_codec_mutex, AV_LOCK_DESTROY);
2604 return err > 0 ? AVERROR_UNKNOWN : err;
2605 }
2606 lockmgr_cb = cb;
2607 codec_mutex = new_codec_mutex;
2608 avformat_mutex = new_avformat_mutex;
2609 }
2610
2611 return 0;
2612 }
2613
2614 int avpriv_lock_avformat(void)
2615 {
2616 if (lockmgr_cb) {
2617 if ((*lockmgr_cb)(&avformat_mutex, AV_LOCK_OBTAIN))
2618 return -1;
2619 }
2620 return 0;
2621 }
2622
2623 int avpriv_unlock_avformat(void)
2624 {
2625 if (lockmgr_cb) {
2626 if ((*lockmgr_cb)(&avformat_mutex, AV_LOCK_RELEASE))
2627 return -1;
2628 }
2629 return 0;
2630 }
2631
2632 unsigned int avpriv_toupper4(unsigned int x)
2633 {
2634 return av_toupper(x & 0xFF) +
2635 (av_toupper((x >> 8) & 0xFF) << 8) +
2636 (av_toupper((x >> 16) & 0xFF) << 16) +
2637 (av_toupper((x >> 24) & 0xFF) << 24);
2638 }
2639
2640 int ff_thread_ref_frame(ThreadFrame *dst, ThreadFrame *src)
2641 {
2642 int ret;
2643
2644 dst->owner = src->owner;
2645
2646 ret = av_frame_ref(dst->f, src->f);
2647 if (ret < 0)
2648 return ret;
2649
2650 if (src->progress &&
2651 !(dst->progress = av_buffer_ref(src->progress))) {
2652 ff_thread_release_buffer(dst->owner, dst);
2653 return AVERROR(ENOMEM);
2654 }
2655
2656 return 0;
2657 }
2658
2659 #if !HAVE_THREADS
2660
2661 int ff_thread_get_buffer(AVCodecContext *avctx, ThreadFrame *f, int flags)
2662 {
2663 f->owner = avctx;
2664 return ff_get_buffer(avctx, f->f, flags);
2665 }
2666
2667 void ff_thread_release_buffer(AVCodecContext *avctx, ThreadFrame *f)
2668 {
2669 if (f->f)
2670 av_frame_unref(f->f);
2671 }
2672
2673 void ff_thread_finish_setup(AVCodecContext *avctx)
2674 {
2675 }
2676
2677 void ff_thread_report_progress(ThreadFrame *f, int progress, int field)
2678 {
2679 }
2680
2681 void ff_thread_await_progress(ThreadFrame *f, int progress, int field)
2682 {
2683 }
2684
2685 #endif
2686
2687 int avcodec_is_open(AVCodecContext *s)
2688 {
2689 return !!s->internal;
2690 }
2691
2692 const uint8_t *avpriv_find_start_code(const uint8_t *restrict p,
2693 const uint8_t *end,
2694 uint32_t * restrict state)
2695 {
2696 int i;
2697
2698 assert(p <= end);
2699 if (p >= end)
2700 return end;
2701
2702 for (i = 0; i < 3; i++) {
2703 uint32_t tmp = *state << 8;
2704 *state = tmp + *(p++);
2705 if (tmp == 0x100 || p == end)
2706 return p;
2707 }
2708
2709 while (p < end) {
2710 if (p[-1] > 1 ) p += 3;
2711 else if (p[-2] ) p += 2;
2712 else if (p[-3]|(p[-1]-1)) p++;
2713 else {
2714 p++;
2715 break;
2716 }
2717 }
2718
2719 p = FFMIN(p, end) - 4;
2720 *state = AV_RB32(p);
2721
2722 return p + 4;
2723 }
2724
2725 AVCPBProperties *av_cpb_properties_alloc(size_t *size)
2726 {
2727 AVCPBProperties *props = av_mallocz(sizeof(AVCPBProperties));
2728 if (!props)
2729 return NULL;
2730
2731 if (size)
2732 *size = sizeof(*props);
2733
2734 props->vbv_delay = UINT64_MAX;
2735
2736 return props;
2737 }
2738
2739 AVCPBProperties *ff_add_cpb_side_data(AVCodecContext *avctx)
2740 {
2741 AVPacketSideData *tmp;
2742 AVCPBProperties *props;
2743 size_t size;
2744
2745 props = av_cpb_properties_alloc(&size);
2746 if (!props)
2747 return NULL;
2748
2749 tmp = av_realloc_array(avctx->coded_side_data, avctx->nb_coded_side_data + 1, sizeof(*tmp));
2750 if (!tmp) {
2751 av_freep(&props);
2752 return NULL;
2753 }
2754
2755 avctx->coded_side_data = tmp;
2756 avctx->nb_coded_side_data++;
2757
2758 avctx->coded_side_data[avctx->nb_coded_side_data - 1].type = AV_PKT_DATA_CPB_PROPERTIES;
2759 avctx->coded_side_data[avctx->nb_coded_side_data - 1].data = (uint8_t*)props;
2760 avctx->coded_side_data[avctx->nb_coded_side_data - 1].size = size;
2761
2762 return props;
2763 }
2764
2765 static void codec_parameters_reset(AVCodecParameters *par)
2766 {
2767 av_freep(&par->extradata);
2768
2769 memset(par, 0, sizeof(*par));
2770
2771 par->codec_type = AVMEDIA_TYPE_UNKNOWN;
2772 par->codec_id = AV_CODEC_ID_NONE;
2773 par->format = -1;
2774 par->field_order = AV_FIELD_UNKNOWN;
2775 par->color_range = AVCOL_RANGE_UNSPECIFIED;
2776 par->color_primaries = AVCOL_PRI_UNSPECIFIED;
2777 par->color_trc = AVCOL_TRC_UNSPECIFIED;
2778 par->color_space = AVCOL_SPC_UNSPECIFIED;
2779 par->chroma_location = AVCHROMA_LOC_UNSPECIFIED;
2780 par->sample_aspect_ratio = (AVRational){ 0, 1 };
2781 }
2782
2783 AVCodecParameters *avcodec_parameters_alloc(void)
2784 {
2785 AVCodecParameters *par = av_mallocz(sizeof(*par));
2786
2787 if (!par)
2788 return NULL;
2789 codec_parameters_reset(par);
2790 return par;
2791 }
2792
2793 void avcodec_parameters_free(AVCodecParameters **ppar)
2794 {
2795 AVCodecParameters *par = *ppar;
2796
2797 if (!par)
2798 return;
2799 codec_parameters_reset(par);
2800
2801 av_freep(ppar);
2802 }
2803
2804 int avcodec_parameters_copy(AVCodecParameters *dst, const AVCodecParameters *src)
2805 {
2806 codec_parameters_reset(dst);
2807 memcpy(dst, src, sizeof(*dst));
2808
2809 dst->extradata = NULL;
2810 dst->extradata_size = 0;
2811 if (src->extradata) {
2812 dst->extradata = av_mallocz(src->extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);
2813 if (!dst->extradata)
2814 return AVERROR(ENOMEM);
2815 memcpy(dst->extradata, src->extradata, src->extradata_size);
2816 dst->extradata_size = src->extradata_size;
2817 }
2818
2819 return 0;
2820 }
2821
2822 int avcodec_parameters_from_context(AVCodecParameters *par,
2823 const AVCodecContext *codec)
2824 {
2825 codec_parameters_reset(par);
2826
2827 par->codec_type = codec->codec_type;
2828 par->codec_id = codec->codec_id;
2829 par->codec_tag = codec->codec_tag;
2830
2831 par->bit_rate = codec->bit_rate;
2832 par->bits_per_coded_sample = codec->bits_per_coded_sample;
2833 par->profile = codec->profile;
2834 par->level = codec->level;
2835
2836 switch (par->codec_type) {
2837 case AVMEDIA_TYPE_VIDEO:
2838 par->format = codec->pix_fmt;
2839 par->width = codec->width;
2840 par->height = codec->height;
2841 par->field_order = codec->field_order;
2842 par->color_range = codec->color_range;
2843 par->color_primaries = codec->color_primaries;
2844 par->color_trc = codec->color_trc;
2845 par->color_space = codec->colorspace;
2846 par->chroma_location = codec->chroma_sample_location;
2847 par->sample_aspect_ratio = codec->sample_aspect_ratio;
2848 break;
2849 case AVMEDIA_TYPE_AUDIO:
2850 par->format = codec->sample_fmt;
2851 par->channel_layout = codec->channel_layout;
2852 par->channels = codec->channels;
2853 par->sample_rate = codec->sample_rate;
2854 par->block_align = codec->block_align;
2855 par->initial_padding = codec->initial_padding;
2856 break;
2857 }
2858
2859 if (codec->extradata) {
2860 par->extradata = av_mallocz(codec->extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);
2861 if (!par->extradata)
2862 return AVERROR(ENOMEM);
2863 memcpy(par->extradata, codec->extradata, codec->extradata_size);
2864 par->extradata_size = codec->extradata_size;
2865 }
2866
2867 return 0;
2868 }
2869
2870 int avcodec_parameters_to_context(AVCodecContext *codec,
2871 const AVCodecParameters *par)
2872 {
2873 codec->codec_type = par->codec_type;
2874 codec->codec_id = par->codec_id;
2875 codec->codec_tag = par->codec_tag;
2876
2877 codec->bit_rate = par->bit_rate;
2878 codec->bits_per_coded_sample = par->bits_per_coded_sample;
2879 codec->profile = par->profile;
2880 codec->level = par->level;
2881
2882 switch (par->codec_type) {
2883 case AVMEDIA_TYPE_VIDEO:
2884 codec->pix_fmt = par->format;
2885 codec->width = par->width;
2886 codec->height = par->height;
2887 codec->field_order = par->field_order;
2888 codec->color_range = par->color_range;
2889 codec->color_primaries = par->color_primaries;
2890 codec->color_trc = par->color_trc;
2891 codec->colorspace = par->color_space;
2892 codec->chroma_sample_location = par->chroma_location;
2893 codec->sample_aspect_ratio = par->sample_aspect_ratio;
2894 break;
2895 case AVMEDIA_TYPE_AUDIO:
2896 codec->sample_fmt = par->format;
2897 codec->channel_layout = par->channel_layout;
2898 codec->channels = par->channels;
2899 codec->sample_rate = par->sample_rate;
2900 codec->block_align = par->block_align;
2901 codec->initial_padding = par->initial_padding;
2902 break;
2903 }
2904
2905 if (par->extradata) {
2906 av_freep(&codec->extradata);
2907 codec->extradata = av_mallocz(par->extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);
2908 if (!codec->extradata)
2909 return AVERROR(ENOMEM);
2910 memcpy(codec->extradata, par->extradata, par->extradata_size);
2911 codec->extradata_size = par->extradata_size;
2912 }
2913
2914 return 0;
2915 }