use LIBAV_LICENSE and LIBAV_VERSION instead of FFMPEG_*
[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 FFmpeg.
7 *
8 * FFmpeg is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
12 *
13 * FFmpeg is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
17 *
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with FFmpeg; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21 */
22
23 /**
24 * @file
25 * utils.
26 */
27
28 #include "libavutil/avstring.h"
29 #include "libavutil/integer.h"
30 #include "libavutil/crc.h"
31 #include "libavutil/pixdesc.h"
32 #include "libavutil/audioconvert.h"
33 #include "libavutil/imgutils.h"
34 #include "libavutil/samplefmt.h"
35 #include "avcodec.h"
36 #include "dsputil.h"
37 #include "libavutil/opt.h"
38 #include "imgconvert.h"
39 #include "thread.h"
40 #include "audioconvert.h"
41 #include "internal.h"
42 #include <stdlib.h>
43 #include <stdarg.h>
44 #include <limits.h>
45 #include <float.h>
46
47 static int volatile entangled_thread_counter=0;
48 static int (*ff_lockmgr_cb)(void **mutex, enum AVLockOp op);
49 static void *codec_mutex;
50
51 void *av_fast_realloc(void *ptr, unsigned int *size, FF_INTERNALC_MEM_TYPE min_size)
52 {
53 if(min_size < *size)
54 return ptr;
55
56 min_size= FFMAX(17*min_size/16 + 32, min_size);
57
58 ptr= av_realloc(ptr, min_size);
59 if(!ptr) //we could set this to the unmodified min_size but this is safer if the user lost the ptr and uses NULL now
60 min_size= 0;
61
62 *size= min_size;
63
64 return ptr;
65 }
66
67 void av_fast_malloc(void *ptr, unsigned int *size, FF_INTERNALC_MEM_TYPE min_size)
68 {
69 void **p = ptr;
70 if (min_size < *size)
71 return;
72 min_size= FFMAX(17*min_size/16 + 32, min_size);
73 av_free(*p);
74 *p = av_malloc(min_size);
75 if (!*p) min_size = 0;
76 *size= min_size;
77 }
78
79 /* encoder management */
80 static AVCodec *first_avcodec = NULL;
81
82 AVCodec *av_codec_next(AVCodec *c){
83 if(c) return c->next;
84 else return first_avcodec;
85 }
86
87 void avcodec_register(AVCodec *codec)
88 {
89 AVCodec **p;
90 avcodec_init();
91 p = &first_avcodec;
92 while (*p != NULL) p = &(*p)->next;
93 *p = codec;
94 codec->next = NULL;
95 }
96
97 #if LIBAVCODEC_VERSION_MAJOR < 53
98 void register_avcodec(AVCodec *codec)
99 {
100 avcodec_register(codec);
101 }
102 #endif
103
104 unsigned avcodec_get_edge_width(void)
105 {
106 return EDGE_WIDTH;
107 }
108
109 void avcodec_set_dimensions(AVCodecContext *s, int width, int height){
110 s->coded_width = width;
111 s->coded_height= height;
112 s->width = -((-width )>>s->lowres);
113 s->height= -((-height)>>s->lowres);
114 }
115
116 typedef struct InternalBuffer{
117 int last_pic_num;
118 uint8_t *base[4];
119 uint8_t *data[4];
120 int linesize[4];
121 int width, height;
122 enum PixelFormat pix_fmt;
123 }InternalBuffer;
124
125 #define INTERNAL_BUFFER_SIZE 32
126
127 void avcodec_align_dimensions2(AVCodecContext *s, int *width, int *height, int linesize_align[4]){
128 int w_align= 1;
129 int h_align= 1;
130
131 switch(s->pix_fmt){
132 case PIX_FMT_YUV420P:
133 case PIX_FMT_YUYV422:
134 case PIX_FMT_UYVY422:
135 case PIX_FMT_YUV422P:
136 case PIX_FMT_YUV440P:
137 case PIX_FMT_YUV444P:
138 case PIX_FMT_GRAY8:
139 case PIX_FMT_GRAY16BE:
140 case PIX_FMT_GRAY16LE:
141 case PIX_FMT_YUVJ420P:
142 case PIX_FMT_YUVJ422P:
143 case PIX_FMT_YUVJ440P:
144 case PIX_FMT_YUVJ444P:
145 case PIX_FMT_YUVA420P:
146 w_align= 16; //FIXME check for non mpeg style codecs and use less alignment
147 h_align= 16;
148 if(s->codec_id == CODEC_ID_MPEG2VIDEO || s->codec_id == CODEC_ID_MJPEG || s->codec_id == CODEC_ID_AMV || s->codec_id == CODEC_ID_THP || s->codec_id == CODEC_ID_H264)
149 h_align= 32; // interlaced is rounded up to 2 MBs
150 break;
151 case PIX_FMT_YUV411P:
152 case PIX_FMT_UYYVYY411:
153 w_align=32;
154 h_align=8;
155 break;
156 case PIX_FMT_YUV410P:
157 if(s->codec_id == CODEC_ID_SVQ1){
158 w_align=64;
159 h_align=64;
160 }
161 case PIX_FMT_RGB555:
162 if(s->codec_id == CODEC_ID_RPZA){
163 w_align=4;
164 h_align=4;
165 }
166 case PIX_FMT_PAL8:
167 case PIX_FMT_BGR8:
168 case PIX_FMT_RGB8:
169 if(s->codec_id == CODEC_ID_SMC){
170 w_align=4;
171 h_align=4;
172 }
173 break;
174 case PIX_FMT_BGR24:
175 if((s->codec_id == CODEC_ID_MSZH) || (s->codec_id == CODEC_ID_ZLIB)){
176 w_align=4;
177 h_align=4;
178 }
179 break;
180 default:
181 w_align= 1;
182 h_align= 1;
183 break;
184 }
185
186 *width = FFALIGN(*width , w_align);
187 *height= FFALIGN(*height, h_align);
188 if(s->codec_id == CODEC_ID_H264 || s->lowres)
189 *height+=2; // some of the optimized chroma MC reads one line too much
190 // which is also done in mpeg decoders with lowres > 0
191
192 linesize_align[0] =
193 linesize_align[1] =
194 linesize_align[2] =
195 linesize_align[3] = STRIDE_ALIGN;
196 //STRIDE_ALIGN is 8 for SSE* but this does not work for SVQ1 chroma planes
197 //we could change STRIDE_ALIGN to 16 for x86/sse but it would increase the
198 //picture size unneccessarily in some cases. The solution here is not
199 //pretty and better ideas are welcome!
200 #if HAVE_MMX
201 if(s->codec_id == CODEC_ID_SVQ1 || s->codec_id == CODEC_ID_VP5 ||
202 s->codec_id == CODEC_ID_VP6 || s->codec_id == CODEC_ID_VP6F ||
203 s->codec_id == CODEC_ID_VP6A) {
204 linesize_align[0] =
205 linesize_align[1] =
206 linesize_align[2] = 16;
207 }
208 #endif
209 }
210
211 void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height){
212 int chroma_shift = av_pix_fmt_descriptors[s->pix_fmt].log2_chroma_w;
213 int linesize_align[4];
214 int align;
215 avcodec_align_dimensions2(s, width, height, linesize_align);
216 align = FFMAX(linesize_align[0], linesize_align[3]);
217 linesize_align[1] <<= chroma_shift;
218 linesize_align[2] <<= chroma_shift;
219 align = FFMAX3(align, linesize_align[1], linesize_align[2]);
220 *width=FFALIGN(*width, align);
221 }
222
223 #if LIBAVCODEC_VERSION_MAJOR < 53
224 int avcodec_check_dimensions(void *av_log_ctx, unsigned int w, unsigned int h){
225 return av_image_check_size(w, h, 0, av_log_ctx);
226 }
227 #endif
228
229 int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic){
230 int i;
231 int w= s->width;
232 int h= s->height;
233 InternalBuffer *buf;
234 int *picture_number;
235
236 if(pic->data[0]!=NULL) {
237 av_log(s, AV_LOG_ERROR, "pic->data[0]!=NULL in avcodec_default_get_buffer\n");
238 return -1;
239 }
240 if(s->internal_buffer_count >= INTERNAL_BUFFER_SIZE) {
241 av_log(s, AV_LOG_ERROR, "internal_buffer_count overflow (missing release_buffer?)\n");
242 return -1;
243 }
244
245 if(av_image_check_size(w, h, 0, s))
246 return -1;
247
248 if(s->internal_buffer==NULL){
249 s->internal_buffer= av_mallocz((INTERNAL_BUFFER_SIZE+1)*sizeof(InternalBuffer));
250 }
251 #if 0
252 s->internal_buffer= av_fast_realloc(
253 s->internal_buffer,
254 &s->internal_buffer_size,
255 sizeof(InternalBuffer)*FFMAX(99, s->internal_buffer_count+1)/*FIXME*/
256 );
257 #endif
258
259 buf= &((InternalBuffer*)s->internal_buffer)[s->internal_buffer_count];
260 picture_number= &(((InternalBuffer*)s->internal_buffer)[INTERNAL_BUFFER_SIZE]).last_pic_num; //FIXME ugly hack
261 (*picture_number)++;
262
263 if(buf->base[0] && (buf->width != w || buf->height != h || buf->pix_fmt != s->pix_fmt)){
264 if(s->active_thread_type&FF_THREAD_FRAME) {
265 av_log_missing_feature(s, "Width/height changing with frame threads is", 0);
266 return -1;
267 }
268
269 for(i=0; i<4; i++){
270 av_freep(&buf->base[i]);
271 buf->data[i]= NULL;
272 }
273 }
274
275 if(buf->base[0]){
276 pic->age= *picture_number - buf->last_pic_num;
277 buf->last_pic_num= *picture_number;
278 }else{
279 int h_chroma_shift, v_chroma_shift;
280 int size[4] = {0};
281 int tmpsize;
282 int unaligned;
283 AVPicture picture;
284 int stride_align[4];
285
286 avcodec_get_chroma_sub_sample(s->pix_fmt, &h_chroma_shift, &v_chroma_shift);
287
288 avcodec_align_dimensions2(s, &w, &h, stride_align);
289
290 if(!(s->flags&CODEC_FLAG_EMU_EDGE)){
291 w+= EDGE_WIDTH*2;
292 h+= EDGE_WIDTH*2;
293 }
294
295 do {
296 // NOTE: do not align linesizes individually, this breaks e.g. assumptions
297 // that linesize[0] == 2*linesize[1] in the MPEG-encoder for 4:2:2
298 av_image_fill_linesizes(picture.linesize, s->pix_fmt, w);
299 // increase alignment of w for next try (rhs gives the lowest bit set in w)
300 w += w & ~(w-1);
301
302 unaligned = 0;
303 for (i=0; i<4; i++){
304 unaligned |= picture.linesize[i] % stride_align[i];
305 }
306 } while (unaligned);
307
308 tmpsize = av_image_fill_pointers(picture.data, s->pix_fmt, h, NULL, picture.linesize);
309 if (tmpsize < 0)
310 return -1;
311
312 for (i=0; i<3 && picture.data[i+1]; i++)
313 size[i] = picture.data[i+1] - picture.data[i];
314 size[i] = tmpsize - (picture.data[i] - picture.data[0]);
315
316 buf->last_pic_num= -256*256*256*64;
317 memset(buf->base, 0, sizeof(buf->base));
318 memset(buf->data, 0, sizeof(buf->data));
319
320 for(i=0; i<4 && size[i]; i++){
321 const int h_shift= i==0 ? 0 : h_chroma_shift;
322 const int v_shift= i==0 ? 0 : v_chroma_shift;
323
324 buf->linesize[i]= picture.linesize[i];
325
326 buf->base[i]= av_malloc(size[i]+16); //FIXME 16
327 if(buf->base[i]==NULL) return -1;
328 memset(buf->base[i], 128, size[i]);
329
330 // no edge if EDGE EMU or not planar YUV
331 if((s->flags&CODEC_FLAG_EMU_EDGE) || !size[2])
332 buf->data[i] = buf->base[i];
333 else
334 buf->data[i] = buf->base[i] + FFALIGN((buf->linesize[i]*EDGE_WIDTH>>v_shift) + (EDGE_WIDTH>>h_shift), stride_align[i]);
335 }
336 if(size[1] && !size[2])
337 ff_set_systematic_pal2((uint32_t*)buf->data[1], s->pix_fmt);
338 buf->width = s->width;
339 buf->height = s->height;
340 buf->pix_fmt= s->pix_fmt;
341 pic->age= 256*256*256*64;
342 }
343 pic->type= FF_BUFFER_TYPE_INTERNAL;
344
345 for(i=0; i<4; i++){
346 pic->base[i]= buf->base[i];
347 pic->data[i]= buf->data[i];
348 pic->linesize[i]= buf->linesize[i];
349 }
350 s->internal_buffer_count++;
351
352 if(s->pkt) pic->pkt_pts= s->pkt->pts;
353 else pic->pkt_pts= AV_NOPTS_VALUE;
354 pic->reordered_opaque= s->reordered_opaque;
355
356 if(s->debug&FF_DEBUG_BUFFERS)
357 av_log(s, AV_LOG_DEBUG, "default_get_buffer called on pic %p, %d buffers used\n", pic, s->internal_buffer_count);
358
359 return 0;
360 }
361
362 void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic){
363 int i;
364 InternalBuffer *buf, *last;
365
366 assert(pic->type==FF_BUFFER_TYPE_INTERNAL);
367 assert(s->internal_buffer_count);
368
369 buf = NULL; /* avoids warning */
370 for(i=0; i<s->internal_buffer_count; i++){ //just 3-5 checks so is not worth to optimize
371 buf= &((InternalBuffer*)s->internal_buffer)[i];
372 if(buf->data[0] == pic->data[0])
373 break;
374 }
375 assert(i < s->internal_buffer_count);
376 s->internal_buffer_count--;
377 last = &((InternalBuffer*)s->internal_buffer)[s->internal_buffer_count];
378
379 FFSWAP(InternalBuffer, *buf, *last);
380
381 for(i=0; i<4; i++){
382 pic->data[i]=NULL;
383 // pic->base[i]=NULL;
384 }
385 //printf("R%X\n", pic->opaque);
386
387 if(s->debug&FF_DEBUG_BUFFERS)
388 av_log(s, AV_LOG_DEBUG, "default_release_buffer called on pic %p, %d buffers used\n", pic, s->internal_buffer_count);
389 }
390
391 int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic){
392 AVFrame temp_pic;
393 int i;
394
395 /* If no picture return a new buffer */
396 if(pic->data[0] == NULL) {
397 /* We will copy from buffer, so must be readable */
398 pic->buffer_hints |= FF_BUFFER_HINTS_READABLE;
399 return s->get_buffer(s, pic);
400 }
401
402 /* If internal buffer type return the same buffer */
403 if(pic->type == FF_BUFFER_TYPE_INTERNAL) {
404 if(s->pkt) pic->pkt_pts= s->pkt->pts;
405 else pic->pkt_pts= AV_NOPTS_VALUE;
406 pic->reordered_opaque= s->reordered_opaque;
407 return 0;
408 }
409
410 /*
411 * Not internal type and reget_buffer not overridden, emulate cr buffer
412 */
413 temp_pic = *pic;
414 for(i = 0; i < 4; i++)
415 pic->data[i] = pic->base[i] = NULL;
416 pic->opaque = NULL;
417 /* Allocate new frame */
418 if (s->get_buffer(s, pic))
419 return -1;
420 /* Copy image data from old buffer to new buffer */
421 av_picture_copy((AVPicture*)pic, (AVPicture*)&temp_pic, s->pix_fmt, s->width,
422 s->height);
423 s->release_buffer(s, &temp_pic); // Release old frame
424 return 0;
425 }
426
427 int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2),void *arg, int *ret, int count, int size){
428 int i;
429
430 for(i=0; i<count; i++){
431 int r= func(c, (char*)arg + i*size);
432 if(ret) ret[i]= r;
433 }
434 return 0;
435 }
436
437 int avcodec_default_execute2(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2, int jobnr, int threadnr),void *arg, int *ret, int count){
438 int i;
439
440 for(i=0; i<count; i++){
441 int r= func(c, arg, i, 0);
442 if(ret) ret[i]= r;
443 }
444 return 0;
445 }
446
447 enum PixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum PixelFormat *fmt){
448 while (*fmt != PIX_FMT_NONE && ff_is_hwaccel_pix_fmt(*fmt))
449 ++fmt;
450 return fmt[0];
451 }
452
453 void avcodec_get_frame_defaults(AVFrame *pic){
454 memset(pic, 0, sizeof(AVFrame));
455
456 pic->pts= AV_NOPTS_VALUE;
457 pic->key_frame= 1;
458 }
459
460 AVFrame *avcodec_alloc_frame(void){
461 AVFrame *pic= av_malloc(sizeof(AVFrame));
462
463 if(pic==NULL) return NULL;
464
465 avcodec_get_frame_defaults(pic);
466
467 return pic;
468 }
469
470 int attribute_align_arg avcodec_open(AVCodecContext *avctx, AVCodec *codec)
471 {
472 int ret= -1;
473
474 /* If there is a user-supplied mutex locking routine, call it. */
475 if (ff_lockmgr_cb) {
476 if ((*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_OBTAIN))
477 return -1;
478 }
479
480 entangled_thread_counter++;
481 if(entangled_thread_counter != 1){
482 av_log(avctx, AV_LOG_ERROR, "insufficient thread locking around avcodec_open/close()\n");
483 goto end;
484 }
485
486 if(avctx->codec || !codec)
487 goto end;
488
489 if (codec->priv_data_size > 0) {
490 if(!avctx->priv_data){
491 avctx->priv_data = av_mallocz(codec->priv_data_size);
492 if (!avctx->priv_data) {
493 ret = AVERROR(ENOMEM);
494 goto end;
495 }
496 if(codec->priv_class){ //this can be droped once all user apps use avcodec_get_context_defaults3()
497 *(AVClass**)avctx->priv_data= codec->priv_class;
498 av_opt_set_defaults(avctx->priv_data);
499 }
500 }
501 } else {
502 avctx->priv_data = NULL;
503 }
504
505 if(avctx->coded_width && avctx->coded_height)
506 avcodec_set_dimensions(avctx, avctx->coded_width, avctx->coded_height);
507 else if(avctx->width && avctx->height)
508 avcodec_set_dimensions(avctx, avctx->width, avctx->height);
509
510 if ((avctx->coded_width || avctx->coded_height || avctx->width || avctx->height)
511 && ( av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx) < 0
512 || av_image_check_size(avctx->width, avctx->height, 0, avctx) < 0)) {
513 av_log(avctx, AV_LOG_WARNING, "ignoring invalid width/height values\n");
514 avcodec_set_dimensions(avctx, 0, 0);
515 }
516
517 /* if the decoder init function was already called previously,
518 free the already allocated subtitle_header before overwriting it */
519 if (codec->decode)
520 av_freep(&avctx->subtitle_header);
521
522 #define SANE_NB_CHANNELS 128U
523 if (avctx->channels > SANE_NB_CHANNELS) {
524 ret = AVERROR(EINVAL);
525 goto free_and_end;
526 }
527
528 avctx->codec = codec;
529 if ((avctx->codec_type == AVMEDIA_TYPE_UNKNOWN || avctx->codec_type == codec->type) &&
530 avctx->codec_id == CODEC_ID_NONE) {
531 avctx->codec_type = codec->type;
532 avctx->codec_id = codec->id;
533 }
534 if (avctx->codec_id != codec->id || (avctx->codec_type != codec->type
535 && avctx->codec_type != AVMEDIA_TYPE_ATTACHMENT)) {
536 av_log(avctx, AV_LOG_ERROR, "codec type or id mismatches\n");
537 goto free_and_end;
538 }
539 avctx->frame_number = 0;
540
541 if (HAVE_THREADS && !avctx->thread_opaque) {
542 ret = ff_thread_init(avctx, avctx->thread_count);
543 if (ret < 0) {
544 goto free_and_end;
545 }
546 }
547
548 if (avctx->codec->max_lowres < avctx->lowres) {
549 av_log(avctx, AV_LOG_ERROR, "The maximum value for lowres supported by the decoder is %d\n",
550 avctx->codec->max_lowres);
551 goto free_and_end;
552 }
553 if (avctx->codec->sample_fmts && avctx->codec->encode) {
554 int i;
555 for (i = 0; avctx->codec->sample_fmts[i] != AV_SAMPLE_FMT_NONE; i++)
556 if (avctx->sample_fmt == avctx->codec->sample_fmts[i])
557 break;
558 if (avctx->codec->sample_fmts[i] == AV_SAMPLE_FMT_NONE) {
559 av_log(avctx, AV_LOG_ERROR, "Specified sample_fmt is not supported.\n");
560 goto free_and_end;
561 }
562 }
563
564 if(avctx->codec->init && !(avctx->active_thread_type&FF_THREAD_FRAME)){
565 ret = avctx->codec->init(avctx);
566 if (ret < 0) {
567 goto free_and_end;
568 }
569 }
570 ret=0;
571 end:
572 entangled_thread_counter--;
573
574 /* Release any user-supplied mutex. */
575 if (ff_lockmgr_cb) {
576 (*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_RELEASE);
577 }
578 return ret;
579 free_and_end:
580 av_freep(&avctx->priv_data);
581 avctx->codec= NULL;
582 goto end;
583 }
584
585 int attribute_align_arg avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size,
586 const short *samples)
587 {
588 if(buf_size < FF_MIN_BUFFER_SIZE && 0){
589 av_log(avctx, AV_LOG_ERROR, "buffer smaller than minimum size\n");
590 return -1;
591 }
592 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || samples){
593 int ret = avctx->codec->encode(avctx, buf, buf_size, samples);
594 avctx->frame_number++;
595 return ret;
596 }else
597 return 0;
598 }
599
600 int attribute_align_arg avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
601 const AVFrame *pict)
602 {
603 if(buf_size < FF_MIN_BUFFER_SIZE){
604 av_log(avctx, AV_LOG_ERROR, "buffer smaller than minimum size\n");
605 return -1;
606 }
607 if(av_image_check_size(avctx->width, avctx->height, 0, avctx))
608 return -1;
609 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || pict){
610 int ret = avctx->codec->encode(avctx, buf, buf_size, pict);
611 avctx->frame_number++;
612 emms_c(); //needed to avoid an emms_c() call before every return;
613
614 return ret;
615 }else
616 return 0;
617 }
618
619 int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size,
620 const AVSubtitle *sub)
621 {
622 int ret;
623 if(sub->start_display_time) {
624 av_log(avctx, AV_LOG_ERROR, "start_display_time must be 0.\n");
625 return -1;
626 }
627 if(sub->num_rects == 0 || !sub->rects)
628 return -1;
629 ret = avctx->codec->encode(avctx, buf, buf_size, sub);
630 avctx->frame_number++;
631 return ret;
632 }
633
634 #if FF_API_VIDEO_OLD
635 int attribute_align_arg avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture,
636 int *got_picture_ptr,
637 const uint8_t *buf, int buf_size)
638 {
639 AVPacket avpkt;
640 av_init_packet(&avpkt);
641 avpkt.data = buf;
642 avpkt.size = buf_size;
643 // HACK for CorePNG to decode as normal PNG by default
644 avpkt.flags = AV_PKT_FLAG_KEY;
645
646 return avcodec_decode_video2(avctx, picture, got_picture_ptr, &avpkt);
647 }
648 #endif
649
650 int attribute_align_arg avcodec_decode_video2(AVCodecContext *avctx, AVFrame *picture,
651 int *got_picture_ptr,
652 AVPacket *avpkt)
653 {
654 int ret;
655
656 *got_picture_ptr= 0;
657 if((avctx->coded_width||avctx->coded_height) && av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx))
658 return -1;
659
660 avctx->pkt = avpkt;
661
662 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size || (avctx->active_thread_type&FF_THREAD_FRAME)){
663 if (HAVE_PTHREADS && avctx->active_thread_type&FF_THREAD_FRAME)
664 ret = ff_thread_decode_frame(avctx, picture, got_picture_ptr,
665 avpkt);
666 else {
667 ret = avctx->codec->decode(avctx, picture, got_picture_ptr,
668 avpkt);
669 picture->pkt_dts= avpkt->dts;
670 }
671
672 emms_c(); //needed to avoid an emms_c() call before every return;
673
674 if (*got_picture_ptr)
675 avctx->frame_number++;
676 }else
677 ret= 0;
678
679 return ret;
680 }
681
682 #if FF_API_AUDIO_OLD
683 int attribute_align_arg avcodec_decode_audio2(AVCodecContext *avctx, int16_t *samples,
684 int *frame_size_ptr,
685 const uint8_t *buf, int buf_size)
686 {
687 AVPacket avpkt;
688 av_init_packet(&avpkt);
689 avpkt.data = buf;
690 avpkt.size = buf_size;
691
692 return avcodec_decode_audio3(avctx, samples, frame_size_ptr, &avpkt);
693 }
694 #endif
695
696 int attribute_align_arg avcodec_decode_audio3(AVCodecContext *avctx, int16_t *samples,
697 int *frame_size_ptr,
698 AVPacket *avpkt)
699 {
700 int ret;
701
702 avctx->pkt = avpkt;
703
704 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size){
705 //FIXME remove the check below _after_ ensuring that all audio check that the available space is enough
706 if(*frame_size_ptr < AVCODEC_MAX_AUDIO_FRAME_SIZE){
707 av_log(avctx, AV_LOG_ERROR, "buffer smaller than AVCODEC_MAX_AUDIO_FRAME_SIZE\n");
708 return -1;
709 }
710 if(*frame_size_ptr < FF_MIN_BUFFER_SIZE ||
711 *frame_size_ptr < avctx->channels * avctx->frame_size * sizeof(int16_t)){
712 av_log(avctx, AV_LOG_ERROR, "buffer %d too small\n", *frame_size_ptr);
713 return -1;
714 }
715
716 ret = avctx->codec->decode(avctx, samples, frame_size_ptr, avpkt);
717 avctx->frame_number++;
718 }else{
719 ret= 0;
720 *frame_size_ptr=0;
721 }
722 return ret;
723 }
724
725 #if FF_API_SUBTITLE_OLD
726 int avcodec_decode_subtitle(AVCodecContext *avctx, AVSubtitle *sub,
727 int *got_sub_ptr,
728 const uint8_t *buf, int buf_size)
729 {
730 AVPacket avpkt;
731 av_init_packet(&avpkt);
732 avpkt.data = buf;
733 avpkt.size = buf_size;
734
735 return avcodec_decode_subtitle2(avctx, sub, got_sub_ptr, &avpkt);
736 }
737 #endif
738
739 int avcodec_decode_subtitle2(AVCodecContext *avctx, AVSubtitle *sub,
740 int *got_sub_ptr,
741 AVPacket *avpkt)
742 {
743 int ret;
744
745 avctx->pkt = avpkt;
746 *got_sub_ptr = 0;
747 ret = avctx->codec->decode(avctx, sub, got_sub_ptr, avpkt);
748 if (*got_sub_ptr)
749 avctx->frame_number++;
750 return ret;
751 }
752
753 void avsubtitle_free(AVSubtitle *sub)
754 {
755 int i;
756
757 for (i = 0; i < sub->num_rects; i++)
758 {
759 av_freep(&sub->rects[i]->pict.data[0]);
760 av_freep(&sub->rects[i]->pict.data[1]);
761 av_freep(&sub->rects[i]->pict.data[2]);
762 av_freep(&sub->rects[i]->pict.data[3]);
763 av_freep(&sub->rects[i]->text);
764 av_freep(&sub->rects[i]->ass);
765 av_freep(&sub->rects[i]);
766 }
767
768 av_freep(&sub->rects);
769
770 memset(sub, 0, sizeof(AVSubtitle));
771 }
772
773 av_cold int avcodec_close(AVCodecContext *avctx)
774 {
775 /* If there is a user-supplied mutex locking routine, call it. */
776 if (ff_lockmgr_cb) {
777 if ((*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_OBTAIN))
778 return -1;
779 }
780
781 entangled_thread_counter++;
782 if(entangled_thread_counter != 1){
783 av_log(avctx, AV_LOG_ERROR, "insufficient thread locking around avcodec_open/close()\n");
784 entangled_thread_counter--;
785 return -1;
786 }
787
788 if (HAVE_THREADS && avctx->thread_opaque)
789 ff_thread_free(avctx);
790 if (avctx->codec && avctx->codec->close)
791 avctx->codec->close(avctx);
792 avcodec_default_free_buffers(avctx);
793 avctx->coded_frame = NULL;
794 av_freep(&avctx->priv_data);
795 if(avctx->codec && avctx->codec->encode)
796 av_freep(&avctx->extradata);
797 avctx->codec = NULL;
798 avctx->active_thread_type = 0;
799 entangled_thread_counter--;
800
801 /* Release any user-supplied mutex. */
802 if (ff_lockmgr_cb) {
803 (*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_RELEASE);
804 }
805 return 0;
806 }
807
808 AVCodec *avcodec_find_encoder(enum CodecID id)
809 {
810 AVCodec *p, *experimental=NULL;
811 p = first_avcodec;
812 while (p) {
813 if (p->encode != NULL && p->id == id) {
814 if (p->capabilities & CODEC_CAP_EXPERIMENTAL && !experimental) {
815 experimental = p;
816 } else
817 return p;
818 }
819 p = p->next;
820 }
821 return experimental;
822 }
823
824 AVCodec *avcodec_find_encoder_by_name(const char *name)
825 {
826 AVCodec *p;
827 if (!name)
828 return NULL;
829 p = first_avcodec;
830 while (p) {
831 if (p->encode != NULL && strcmp(name,p->name) == 0)
832 return p;
833 p = p->next;
834 }
835 return NULL;
836 }
837
838 AVCodec *avcodec_find_decoder(enum CodecID id)
839 {
840 AVCodec *p;
841 p = first_avcodec;
842 while (p) {
843 if (p->decode != NULL && p->id == id)
844 return p;
845 p = p->next;
846 }
847 return NULL;
848 }
849
850 AVCodec *avcodec_find_decoder_by_name(const char *name)
851 {
852 AVCodec *p;
853 if (!name)
854 return NULL;
855 p = first_avcodec;
856 while (p) {
857 if (p->decode != NULL && strcmp(name,p->name) == 0)
858 return p;
859 p = p->next;
860 }
861 return NULL;
862 }
863
864 static int get_bit_rate(AVCodecContext *ctx)
865 {
866 int bit_rate;
867 int bits_per_sample;
868
869 switch(ctx->codec_type) {
870 case AVMEDIA_TYPE_VIDEO:
871 case AVMEDIA_TYPE_DATA:
872 case AVMEDIA_TYPE_SUBTITLE:
873 case AVMEDIA_TYPE_ATTACHMENT:
874 bit_rate = ctx->bit_rate;
875 break;
876 case AVMEDIA_TYPE_AUDIO:
877 bits_per_sample = av_get_bits_per_sample(ctx->codec_id);
878 bit_rate = bits_per_sample ? ctx->sample_rate * ctx->channels * bits_per_sample : ctx->bit_rate;
879 break;
880 default:
881 bit_rate = 0;
882 break;
883 }
884 return bit_rate;
885 }
886
887 size_t av_get_codec_tag_string(char *buf, size_t buf_size, unsigned int codec_tag)
888 {
889 int i, len, ret = 0;
890
891 for (i = 0; i < 4; i++) {
892 len = snprintf(buf, buf_size,
893 isprint(codec_tag&0xFF) ? "%c" : "[%d]", codec_tag&0xFF);
894 buf += len;
895 buf_size = buf_size > len ? buf_size - len : 0;
896 ret += len;
897 codec_tag>>=8;
898 }
899 return ret;
900 }
901
902 void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)
903 {
904 const char *codec_name;
905 const char *profile = NULL;
906 AVCodec *p;
907 char buf1[32];
908 int bitrate;
909 AVRational display_aspect_ratio;
910
911 if (encode)
912 p = avcodec_find_encoder(enc->codec_id);
913 else
914 p = avcodec_find_decoder(enc->codec_id);
915
916 if (p) {
917 codec_name = p->name;
918 profile = av_get_profile_name(p, enc->profile);
919 } else if (enc->codec_id == CODEC_ID_MPEG2TS) {
920 /* fake mpeg2 transport stream codec (currently not
921 registered) */
922 codec_name = "mpeg2ts";
923 } else if (enc->codec_name[0] != '\0') {
924 codec_name = enc->codec_name;
925 } else {
926 /* output avi tags */
927 char tag_buf[32];
928 av_get_codec_tag_string(tag_buf, sizeof(tag_buf), enc->codec_tag);
929 snprintf(buf1, sizeof(buf1), "%s / 0x%04X", tag_buf, enc->codec_tag);
930 codec_name = buf1;
931 }
932
933 switch(enc->codec_type) {
934 case AVMEDIA_TYPE_VIDEO:
935 snprintf(buf, buf_size,
936 "Video: %s%s",
937 codec_name, enc->mb_decision ? " (hq)" : "");
938 if (profile)
939 snprintf(buf + strlen(buf), buf_size - strlen(buf),
940 " (%s)", profile);
941 if (enc->pix_fmt != PIX_FMT_NONE) {
942 snprintf(buf + strlen(buf), buf_size - strlen(buf),
943 ", %s",
944 avcodec_get_pix_fmt_name(enc->pix_fmt));
945 }
946 if (enc->width) {
947 snprintf(buf + strlen(buf), buf_size - strlen(buf),
948 ", %dx%d",
949 enc->width, enc->height);
950 if (enc->sample_aspect_ratio.num) {
951 av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
952 enc->width*enc->sample_aspect_ratio.num,
953 enc->height*enc->sample_aspect_ratio.den,
954 1024*1024);
955 snprintf(buf + strlen(buf), buf_size - strlen(buf),
956 " [PAR %d:%d DAR %d:%d]",
957 enc->sample_aspect_ratio.num, enc->sample_aspect_ratio.den,
958 display_aspect_ratio.num, display_aspect_ratio.den);
959 }
960 if(av_log_get_level() >= AV_LOG_DEBUG){
961 int g= av_gcd(enc->time_base.num, enc->time_base.den);
962 snprintf(buf + strlen(buf), buf_size - strlen(buf),
963 ", %d/%d",
964 enc->time_base.num/g, enc->time_base.den/g);
965 }
966 }
967 if (encode) {
968 snprintf(buf + strlen(buf), buf_size - strlen(buf),
969 ", q=%d-%d", enc->qmin, enc->qmax);
970 }
971 break;
972 case AVMEDIA_TYPE_AUDIO:
973 snprintf(buf, buf_size,
974 "Audio: %s",
975 codec_name);
976 if (profile)
977 snprintf(buf + strlen(buf), buf_size - strlen(buf),
978 " (%s)", profile);
979 if (enc->sample_rate) {
980 snprintf(buf + strlen(buf), buf_size - strlen(buf),
981 ", %d Hz", enc->sample_rate);
982 }
983 av_strlcat(buf, ", ", buf_size);
984 av_get_channel_layout_string(buf + strlen(buf), buf_size - strlen(buf), enc->channels, enc->channel_layout);
985 if (enc->sample_fmt != AV_SAMPLE_FMT_NONE) {
986 snprintf(buf + strlen(buf), buf_size - strlen(buf),
987 ", %s", av_get_sample_fmt_name(enc->sample_fmt));
988 }
989 break;
990 case AVMEDIA_TYPE_DATA:
991 snprintf(buf, buf_size, "Data: %s", codec_name);
992 break;
993 case AVMEDIA_TYPE_SUBTITLE:
994 snprintf(buf, buf_size, "Subtitle: %s", codec_name);
995 break;
996 case AVMEDIA_TYPE_ATTACHMENT:
997 snprintf(buf, buf_size, "Attachment: %s", codec_name);
998 break;
999 default:
1000 snprintf(buf, buf_size, "Invalid Codec type %d", enc->codec_type);
1001 return;
1002 }
1003 if (encode) {
1004 if (enc->flags & CODEC_FLAG_PASS1)
1005 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1006 ", pass 1");
1007 if (enc->flags & CODEC_FLAG_PASS2)
1008 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1009 ", pass 2");
1010 }
1011 bitrate = get_bit_rate(enc);
1012 if (bitrate != 0) {
1013 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1014 ", %d kb/s", bitrate / 1000);
1015 }
1016 }
1017
1018 const char *av_get_profile_name(const AVCodec *codec, int profile)
1019 {
1020 const AVProfile *p;
1021 if (profile == FF_PROFILE_UNKNOWN || !codec->profiles)
1022 return NULL;
1023
1024 for (p = codec->profiles; p->profile != FF_PROFILE_UNKNOWN; p++)
1025 if (p->profile == profile)
1026 return p->name;
1027
1028 return NULL;
1029 }
1030
1031 unsigned avcodec_version( void )
1032 {
1033 return LIBAVCODEC_VERSION_INT;
1034 }
1035
1036 const char *avcodec_configuration(void)
1037 {
1038 return LIBAV_CONFIGURATION;
1039 }
1040
1041 const char *avcodec_license(void)
1042 {
1043 #define LICENSE_PREFIX "libavcodec license: "
1044 return LICENSE_PREFIX LIBAV_LICENSE + sizeof(LICENSE_PREFIX) - 1;
1045 }
1046
1047 void avcodec_init(void)
1048 {
1049 static int initialized = 0;
1050
1051 if (initialized != 0)
1052 return;
1053 initialized = 1;
1054
1055 dsputil_static_init();
1056 }
1057
1058 void avcodec_flush_buffers(AVCodecContext *avctx)
1059 {
1060 if(HAVE_PTHREADS && avctx->active_thread_type&FF_THREAD_FRAME)
1061 ff_thread_flush(avctx);
1062 if(avctx->codec->flush)
1063 avctx->codec->flush(avctx);
1064 }
1065
1066 void avcodec_default_free_buffers(AVCodecContext *s){
1067 int i, j;
1068
1069 if(s->internal_buffer==NULL) return;
1070
1071 if (s->internal_buffer_count)
1072 av_log(s, AV_LOG_WARNING, "Found %i unreleased buffers!\n", s->internal_buffer_count);
1073 for(i=0; i<INTERNAL_BUFFER_SIZE; i++){
1074 InternalBuffer *buf= &((InternalBuffer*)s->internal_buffer)[i];
1075 for(j=0; j<4; j++){
1076 av_freep(&buf->base[j]);
1077 buf->data[j]= NULL;
1078 }
1079 }
1080 av_freep(&s->internal_buffer);
1081
1082 s->internal_buffer_count=0;
1083 }
1084
1085 char av_get_pict_type_char(int pict_type){
1086 switch(pict_type){
1087 case FF_I_TYPE: return 'I';
1088 case FF_P_TYPE: return 'P';
1089 case FF_B_TYPE: return 'B';
1090 case FF_S_TYPE: return 'S';
1091 case FF_SI_TYPE:return 'i';
1092 case FF_SP_TYPE:return 'p';
1093 case FF_BI_TYPE:return 'b';
1094 default: return '?';
1095 }
1096 }
1097
1098 int av_get_bits_per_sample(enum CodecID codec_id){
1099 switch(codec_id){
1100 case CODEC_ID_ADPCM_SBPRO_2:
1101 return 2;
1102 case CODEC_ID_ADPCM_SBPRO_3:
1103 return 3;
1104 case CODEC_ID_ADPCM_SBPRO_4:
1105 case CODEC_ID_ADPCM_CT:
1106 case CODEC_ID_ADPCM_IMA_WAV:
1107 case CODEC_ID_ADPCM_MS:
1108 case CODEC_ID_ADPCM_YAMAHA:
1109 return 4;
1110 case CODEC_ID_PCM_ALAW:
1111 case CODEC_ID_PCM_MULAW:
1112 case CODEC_ID_PCM_S8:
1113 case CODEC_ID_PCM_U8:
1114 case CODEC_ID_PCM_ZORK:
1115 return 8;
1116 case CODEC_ID_PCM_S16BE:
1117 case CODEC_ID_PCM_S16LE:
1118 case CODEC_ID_PCM_S16LE_PLANAR:
1119 case CODEC_ID_PCM_U16BE:
1120 case CODEC_ID_PCM_U16LE:
1121 return 16;
1122 case CODEC_ID_PCM_S24DAUD:
1123 case CODEC_ID_PCM_S24BE:
1124 case CODEC_ID_PCM_S24LE:
1125 case CODEC_ID_PCM_U24BE:
1126 case CODEC_ID_PCM_U24LE:
1127 return 24;
1128 case CODEC_ID_PCM_S32BE:
1129 case CODEC_ID_PCM_S32LE:
1130 case CODEC_ID_PCM_U32BE:
1131 case CODEC_ID_PCM_U32LE:
1132 case CODEC_ID_PCM_F32BE:
1133 case CODEC_ID_PCM_F32LE:
1134 return 32;
1135 case CODEC_ID_PCM_F64BE:
1136 case CODEC_ID_PCM_F64LE:
1137 return 64;
1138 default:
1139 return 0;
1140 }
1141 }
1142
1143 #if FF_API_OLD_SAMPLE_FMT
1144 int av_get_bits_per_sample_format(enum AVSampleFormat sample_fmt) {
1145 return av_get_bits_per_sample_fmt(sample_fmt);
1146 }
1147 #endif
1148
1149 #if !HAVE_THREADS
1150 int ff_thread_init(AVCodecContext *s, int thread_count){
1151 s->thread_count = thread_count;
1152 return -1;
1153 }
1154 #endif
1155
1156 unsigned int av_xiphlacing(unsigned char *s, unsigned int v)
1157 {
1158 unsigned int n = 0;
1159
1160 while(v >= 0xff) {
1161 *s++ = 0xff;
1162 v -= 0xff;
1163 n++;
1164 }
1165 *s = v;
1166 n++;
1167 return n;
1168 }
1169
1170 #if LIBAVCODEC_VERSION_MAJOR < 53
1171 #include "libavutil/parseutils.h"
1172
1173 int av_parse_video_frame_size(int *width_ptr, int *height_ptr, const char *str)
1174 {
1175 return av_parse_video_size(width_ptr, height_ptr, str);
1176 }
1177
1178 int av_parse_video_frame_rate(AVRational *frame_rate, const char *arg)
1179 {
1180 return av_parse_video_rate(frame_rate, arg);
1181 }
1182 #endif
1183
1184 int ff_match_2uint16(const uint16_t (*tab)[2], int size, int a, int b){
1185 int i;
1186 for(i=0; i<size && !(tab[i][0]==a && tab[i][1]==b); i++);
1187 return i;
1188 }
1189
1190 void av_log_missing_feature(void *avc, const char *feature, int want_sample)
1191 {
1192 av_log(avc, AV_LOG_WARNING, "%s not implemented. Update your FFmpeg "
1193 "version to the newest one from Git. If the problem still "
1194 "occurs, it means that your file has a feature which has not "
1195 "been implemented.", feature);
1196 if(want_sample)
1197 av_log_ask_for_sample(avc, NULL);
1198 else
1199 av_log(avc, AV_LOG_WARNING, "\n");
1200 }
1201
1202 void av_log_ask_for_sample(void *avc, const char *msg)
1203 {
1204 if (msg)
1205 av_log(avc, AV_LOG_WARNING, "%s ", msg);
1206 av_log(avc, AV_LOG_WARNING, "If you want to help, upload a sample "
1207 "of this file to ftp://upload.libav.org/MPlayer/incoming/ "
1208 "and contact the libav-devel mailing list.\n");
1209 }
1210
1211 static AVHWAccel *first_hwaccel = NULL;
1212
1213 void av_register_hwaccel(AVHWAccel *hwaccel)
1214 {
1215 AVHWAccel **p = &first_hwaccel;
1216 while (*p)
1217 p = &(*p)->next;
1218 *p = hwaccel;
1219 hwaccel->next = NULL;
1220 }
1221
1222 AVHWAccel *av_hwaccel_next(AVHWAccel *hwaccel)
1223 {
1224 return hwaccel ? hwaccel->next : first_hwaccel;
1225 }
1226
1227 AVHWAccel *ff_find_hwaccel(enum CodecID codec_id, enum PixelFormat pix_fmt)
1228 {
1229 AVHWAccel *hwaccel=NULL;
1230
1231 while((hwaccel= av_hwaccel_next(hwaccel))){
1232 if ( hwaccel->id == codec_id
1233 && hwaccel->pix_fmt == pix_fmt)
1234 return hwaccel;
1235 }
1236 return NULL;
1237 }
1238
1239 int av_lockmgr_register(int (*cb)(void **mutex, enum AVLockOp op))
1240 {
1241 if (ff_lockmgr_cb) {
1242 if (ff_lockmgr_cb(&codec_mutex, AV_LOCK_DESTROY))
1243 return -1;
1244 }
1245
1246 ff_lockmgr_cb = cb;
1247
1248 if (ff_lockmgr_cb) {
1249 if (ff_lockmgr_cb(&codec_mutex, AV_LOCK_CREATE))
1250 return -1;
1251 }
1252 return 0;
1253 }
1254
1255 unsigned int ff_toupper4(unsigned int x)
1256 {
1257 return toupper( x &0xFF)
1258 + (toupper((x>>8 )&0xFF)<<8 )
1259 + (toupper((x>>16)&0xFF)<<16)
1260 + (toupper((x>>24)&0xFF)<<24);
1261 }
1262
1263 #if !HAVE_PTHREADS
1264
1265 int ff_thread_get_buffer(AVCodecContext *avctx, AVFrame *f)
1266 {
1267 f->owner = avctx;
1268 return avctx->get_buffer(avctx, f);
1269 }
1270
1271 void ff_thread_release_buffer(AVCodecContext *avctx, AVFrame *f)
1272 {
1273 f->owner->release_buffer(f->owner, f);
1274 }
1275
1276 void ff_thread_finish_setup(AVCodecContext *avctx)
1277 {
1278 }
1279
1280 void ff_thread_report_progress(AVFrame *f, int progress, int field)
1281 {
1282 }
1283
1284 void ff_thread_await_progress(AVFrame *f, int progress, int field)
1285 {
1286 }
1287
1288 #endif
1289
1290 #if LIBAVCODEC_VERSION_MAJOR < 53
1291
1292 int avcodec_thread_init(AVCodecContext *s, int thread_count)
1293 {
1294 return ff_thread_init(s, thread_count);
1295 }
1296
1297 void avcodec_thread_free(AVCodecContext *s)
1298 {
1299 #if HAVE_THREADS
1300 ff_thread_free(s);
1301 #endif
1302 }
1303
1304 #endif