Move allocation and init to defaults of the private codec contexts to avcodec_get_con...
[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 "libavcore/imgutils.h"
33 #include "avcodec.h"
34 #include "dsputil.h"
35 #include "libavutil/opt.h"
36 #include "imgconvert.h"
37 #include "audioconvert.h"
38 #include "internal.h"
39 #include <stdlib.h>
40 #include <stdarg.h>
41 #include <limits.h>
42 #include <float.h>
43
44 static int volatile entangled_thread_counter=0;
45 int (*ff_lockmgr_cb)(void **mutex, enum AVLockOp op);
46 static void *codec_mutex;
47
48 void *av_fast_realloc(void *ptr, unsigned int *size, unsigned int min_size)
49 {
50 if(min_size < *size)
51 return ptr;
52
53 *size= FFMAX(17*min_size/16 + 32, min_size);
54
55 ptr= av_realloc(ptr, *size);
56 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
57 *size= 0;
58
59 return ptr;
60 }
61
62 void av_fast_malloc(void *ptr, unsigned int *size, unsigned int min_size)
63 {
64 void **p = ptr;
65 if (min_size < *size)
66 return;
67 *size= FFMAX(17*min_size/16 + 32, min_size);
68 av_free(*p);
69 *p = av_malloc(*size);
70 if (!*p) *size = 0;
71 }
72
73 /* encoder management */
74 static AVCodec *first_avcodec = NULL;
75
76 AVCodec *av_codec_next(AVCodec *c){
77 if(c) return c->next;
78 else return first_avcodec;
79 }
80
81 void avcodec_register(AVCodec *codec)
82 {
83 AVCodec **p;
84 avcodec_init();
85 p = &first_avcodec;
86 while (*p != NULL) p = &(*p)->next;
87 *p = codec;
88 codec->next = NULL;
89 }
90
91 #if LIBAVCODEC_VERSION_MAJOR < 53
92 void register_avcodec(AVCodec *codec)
93 {
94 avcodec_register(codec);
95 }
96 #endif
97
98 unsigned avcodec_get_edge_width(void)
99 {
100 return EDGE_WIDTH;
101 }
102
103 void avcodec_set_dimensions(AVCodecContext *s, int width, int height){
104 s->coded_width = width;
105 s->coded_height= height;
106 s->width = -((-width )>>s->lowres);
107 s->height= -((-height)>>s->lowres);
108 }
109
110 typedef struct InternalBuffer{
111 int last_pic_num;
112 uint8_t *base[4];
113 uint8_t *data[4];
114 int linesize[4];
115 int width, height;
116 enum PixelFormat pix_fmt;
117 }InternalBuffer;
118
119 #define INTERNAL_BUFFER_SIZE 32
120
121 void avcodec_align_dimensions2(AVCodecContext *s, int *width, int *height, int linesize_align[4]){
122 int w_align= 1;
123 int h_align= 1;
124
125 switch(s->pix_fmt){
126 case PIX_FMT_YUV420P:
127 case PIX_FMT_YUYV422:
128 case PIX_FMT_UYVY422:
129 case PIX_FMT_YUV422P:
130 case PIX_FMT_YUV440P:
131 case PIX_FMT_YUV444P:
132 case PIX_FMT_GRAY8:
133 case PIX_FMT_GRAY16BE:
134 case PIX_FMT_GRAY16LE:
135 case PIX_FMT_YUVJ420P:
136 case PIX_FMT_YUVJ422P:
137 case PIX_FMT_YUVJ440P:
138 case PIX_FMT_YUVJ444P:
139 case PIX_FMT_YUVA420P:
140 w_align= 16; //FIXME check for non mpeg style codecs and use less alignment
141 h_align= 16;
142 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)
143 h_align= 32; // interlaced is rounded up to 2 MBs
144 break;
145 case PIX_FMT_YUV411P:
146 case PIX_FMT_UYYVYY411:
147 w_align=32;
148 h_align=8;
149 break;
150 case PIX_FMT_YUV410P:
151 if(s->codec_id == CODEC_ID_SVQ1){
152 w_align=64;
153 h_align=64;
154 }
155 case PIX_FMT_RGB555:
156 if(s->codec_id == CODEC_ID_RPZA){
157 w_align=4;
158 h_align=4;
159 }
160 case PIX_FMT_PAL8:
161 case PIX_FMT_BGR8:
162 case PIX_FMT_RGB8:
163 if(s->codec_id == CODEC_ID_SMC){
164 w_align=4;
165 h_align=4;
166 }
167 break;
168 case PIX_FMT_BGR24:
169 if((s->codec_id == CODEC_ID_MSZH) || (s->codec_id == CODEC_ID_ZLIB)){
170 w_align=4;
171 h_align=4;
172 }
173 break;
174 default:
175 w_align= 1;
176 h_align= 1;
177 break;
178 }
179
180 *width = FFALIGN(*width , w_align);
181 *height= FFALIGN(*height, h_align);
182 if(s->codec_id == CODEC_ID_H264)
183 *height+=2; // some of the optimized chroma MC reads one line too much
184
185 linesize_align[0] =
186 linesize_align[1] =
187 linesize_align[2] =
188 linesize_align[3] = STRIDE_ALIGN;
189 //STRIDE_ALIGN is 8 for SSE* but this does not work for SVQ1 chroma planes
190 //we could change STRIDE_ALIGN to 16 for x86/sse but it would increase the
191 //picture size unneccessarily in some cases. The solution here is not
192 //pretty and better ideas are welcome!
193 #if HAVE_MMX
194 if(s->codec_id == CODEC_ID_SVQ1 || s->codec_id == CODEC_ID_VP5 ||
195 s->codec_id == CODEC_ID_VP6 || s->codec_id == CODEC_ID_VP6F ||
196 s->codec_id == CODEC_ID_VP6A) {
197 linesize_align[0] =
198 linesize_align[1] =
199 linesize_align[2] = 16;
200 }
201 #endif
202 }
203
204 void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height){
205 int chroma_shift = av_pix_fmt_descriptors[s->pix_fmt].log2_chroma_w;
206 int linesize_align[4];
207 int align;
208 avcodec_align_dimensions2(s, width, height, linesize_align);
209 align = FFMAX(linesize_align[0], linesize_align[3]);
210 linesize_align[1] <<= chroma_shift;
211 linesize_align[2] <<= chroma_shift;
212 align = FFMAX3(align, linesize_align[1], linesize_align[2]);
213 *width=FFALIGN(*width, align);
214 }
215
216 #if LIBAVCODEC_VERSION_MAJOR < 53
217 int avcodec_check_dimensions(void *av_log_ctx, unsigned int w, unsigned int h){
218 return av_image_check_size(w, h, 0, av_log_ctx);
219 }
220 #endif
221
222 int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic){
223 int i;
224 int w= s->width;
225 int h= s->height;
226 InternalBuffer *buf;
227 int *picture_number;
228
229 if(pic->data[0]!=NULL) {
230 av_log(s, AV_LOG_ERROR, "pic->data[0]!=NULL in avcodec_default_get_buffer\n");
231 return -1;
232 }
233 if(s->internal_buffer_count >= INTERNAL_BUFFER_SIZE) {
234 av_log(s, AV_LOG_ERROR, "internal_buffer_count overflow (missing release_buffer?)\n");
235 return -1;
236 }
237
238 if(av_image_check_size(w, h, 0, s))
239 return -1;
240
241 if(s->internal_buffer==NULL){
242 s->internal_buffer= av_mallocz((INTERNAL_BUFFER_SIZE+1)*sizeof(InternalBuffer));
243 }
244 #if 0
245 s->internal_buffer= av_fast_realloc(
246 s->internal_buffer,
247 &s->internal_buffer_size,
248 sizeof(InternalBuffer)*FFMAX(99, s->internal_buffer_count+1)/*FIXME*/
249 );
250 #endif
251
252 buf= &((InternalBuffer*)s->internal_buffer)[s->internal_buffer_count];
253 picture_number= &(((InternalBuffer*)s->internal_buffer)[INTERNAL_BUFFER_SIZE]).last_pic_num; //FIXME ugly hack
254 (*picture_number)++;
255
256 if(buf->base[0] && (buf->width != w || buf->height != h || buf->pix_fmt != s->pix_fmt)){
257 for(i=0; i<4; i++){
258 av_freep(&buf->base[i]);
259 buf->data[i]= NULL;
260 }
261 }
262
263 if(buf->base[0]){
264 pic->age= *picture_number - buf->last_pic_num;
265 buf->last_pic_num= *picture_number;
266 }else{
267 int h_chroma_shift, v_chroma_shift;
268 int size[4] = {0};
269 int tmpsize;
270 int unaligned;
271 AVPicture picture;
272 int stride_align[4];
273
274 avcodec_get_chroma_sub_sample(s->pix_fmt, &h_chroma_shift, &v_chroma_shift);
275
276 avcodec_align_dimensions2(s, &w, &h, stride_align);
277
278 if(!(s->flags&CODEC_FLAG_EMU_EDGE)){
279 w+= EDGE_WIDTH*2;
280 h+= EDGE_WIDTH*2;
281 }
282
283 do {
284 // NOTE: do not align linesizes individually, this breaks e.g. assumptions
285 // that linesize[0] == 2*linesize[1] in the MPEG-encoder for 4:2:2
286 av_image_fill_linesizes(picture.linesize, s->pix_fmt, w);
287 // increase alignment of w for next try (rhs gives the lowest bit set in w)
288 w += w & ~(w-1);
289
290 unaligned = 0;
291 for (i=0; i<4; i++){
292 unaligned |= picture.linesize[i] % stride_align[i];
293 }
294 } while (unaligned);
295
296 tmpsize = av_image_fill_pointers(picture.data, s->pix_fmt, h, NULL, picture.linesize);
297 if (tmpsize < 0)
298 return -1;
299
300 for (i=0; i<3 && picture.data[i+1]; i++)
301 size[i] = picture.data[i+1] - picture.data[i];
302 size[i] = tmpsize - (picture.data[i] - picture.data[0]);
303
304 buf->last_pic_num= -256*256*256*64;
305 memset(buf->base, 0, sizeof(buf->base));
306 memset(buf->data, 0, sizeof(buf->data));
307
308 for(i=0; i<4 && size[i]; i++){
309 const int h_shift= i==0 ? 0 : h_chroma_shift;
310 const int v_shift= i==0 ? 0 : v_chroma_shift;
311
312 buf->linesize[i]= picture.linesize[i];
313
314 buf->base[i]= av_malloc(size[i]+16); //FIXME 16
315 if(buf->base[i]==NULL) return -1;
316 memset(buf->base[i], 128, size[i]);
317
318 // no edge if EDGE EMU or not planar YUV
319 if((s->flags&CODEC_FLAG_EMU_EDGE) || !size[2])
320 buf->data[i] = buf->base[i];
321 else
322 buf->data[i] = buf->base[i] + FFALIGN((buf->linesize[i]*EDGE_WIDTH>>v_shift) + (EDGE_WIDTH>>h_shift), stride_align[i]);
323 }
324 if(size[1] && !size[2])
325 ff_set_systematic_pal((uint32_t*)buf->data[1], s->pix_fmt);
326 buf->width = s->width;
327 buf->height = s->height;
328 buf->pix_fmt= s->pix_fmt;
329 pic->age= 256*256*256*64;
330 }
331 pic->type= FF_BUFFER_TYPE_INTERNAL;
332
333 for(i=0; i<4; i++){
334 pic->base[i]= buf->base[i];
335 pic->data[i]= buf->data[i];
336 pic->linesize[i]= buf->linesize[i];
337 }
338 s->internal_buffer_count++;
339
340 pic->reordered_opaque= s->reordered_opaque;
341
342 if(s->debug&FF_DEBUG_BUFFERS)
343 av_log(s, AV_LOG_DEBUG, "default_get_buffer called on pic %p, %d buffers used\n", pic, s->internal_buffer_count);
344
345 return 0;
346 }
347
348 void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic){
349 int i;
350 InternalBuffer *buf, *last;
351
352 assert(pic->type==FF_BUFFER_TYPE_INTERNAL);
353 assert(s->internal_buffer_count);
354
355 buf = NULL; /* avoids warning */
356 for(i=0; i<s->internal_buffer_count; i++){ //just 3-5 checks so is not worth to optimize
357 buf= &((InternalBuffer*)s->internal_buffer)[i];
358 if(buf->data[0] == pic->data[0])
359 break;
360 }
361 assert(i < s->internal_buffer_count);
362 s->internal_buffer_count--;
363 last = &((InternalBuffer*)s->internal_buffer)[s->internal_buffer_count];
364
365 FFSWAP(InternalBuffer, *buf, *last);
366
367 for(i=0; i<4; i++){
368 pic->data[i]=NULL;
369 // pic->base[i]=NULL;
370 }
371 //printf("R%X\n", pic->opaque);
372
373 if(s->debug&FF_DEBUG_BUFFERS)
374 av_log(s, AV_LOG_DEBUG, "default_release_buffer called on pic %p, %d buffers used\n", pic, s->internal_buffer_count);
375 }
376
377 int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic){
378 AVFrame temp_pic;
379 int i;
380
381 /* If no picture return a new buffer */
382 if(pic->data[0] == NULL) {
383 /* We will copy from buffer, so must be readable */
384 pic->buffer_hints |= FF_BUFFER_HINTS_READABLE;
385 return s->get_buffer(s, pic);
386 }
387
388 /* If internal buffer type return the same buffer */
389 if(pic->type == FF_BUFFER_TYPE_INTERNAL) {
390 pic->reordered_opaque= s->reordered_opaque;
391 return 0;
392 }
393
394 /*
395 * Not internal type and reget_buffer not overridden, emulate cr buffer
396 */
397 temp_pic = *pic;
398 for(i = 0; i < 4; i++)
399 pic->data[i] = pic->base[i] = NULL;
400 pic->opaque = NULL;
401 /* Allocate new frame */
402 if (s->get_buffer(s, pic))
403 return -1;
404 /* Copy image data from old buffer to new buffer */
405 av_picture_copy((AVPicture*)pic, (AVPicture*)&temp_pic, s->pix_fmt, s->width,
406 s->height);
407 s->release_buffer(s, &temp_pic); // Release old frame
408 return 0;
409 }
410
411 int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2),void *arg, int *ret, int count, int size){
412 int i;
413
414 for(i=0; i<count; i++){
415 int r= func(c, (char*)arg + i*size);
416 if(ret) ret[i]= r;
417 }
418 return 0;
419 }
420
421 int avcodec_default_execute2(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2, int jobnr, int threadnr),void *arg, int *ret, int count){
422 int i;
423
424 for(i=0; i<count; i++){
425 int r= func(c, arg, i, 0);
426 if(ret) ret[i]= r;
427 }
428 return 0;
429 }
430
431 enum PixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum PixelFormat *fmt){
432 while (*fmt != PIX_FMT_NONE && ff_is_hwaccel_pix_fmt(*fmt))
433 ++fmt;
434 return fmt[0];
435 }
436
437 void avcodec_get_frame_defaults(AVFrame *pic){
438 memset(pic, 0, sizeof(AVFrame));
439
440 pic->pts= AV_NOPTS_VALUE;
441 pic->key_frame= 1;
442 }
443
444 AVFrame *avcodec_alloc_frame(void){
445 AVFrame *pic= av_malloc(sizeof(AVFrame));
446
447 if(pic==NULL) return NULL;
448
449 avcodec_get_frame_defaults(pic);
450
451 return pic;
452 }
453
454 int attribute_align_arg avcodec_open(AVCodecContext *avctx, AVCodec *codec)
455 {
456 int ret= -1;
457
458 /* If there is a user-supplied mutex locking routine, call it. */
459 if (ff_lockmgr_cb) {
460 if ((*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_OBTAIN))
461 return -1;
462 }
463
464 entangled_thread_counter++;
465 if(entangled_thread_counter != 1){
466 av_log(avctx, AV_LOG_ERROR, "insufficient thread locking around avcodec_open/close()\n");
467 goto end;
468 }
469
470 if(avctx->codec || !codec)
471 goto end;
472
473 if (codec->priv_data_size > 0) {
474 if(!avctx->priv_data){
475 avctx->priv_data = av_mallocz(codec->priv_data_size);
476 if (!avctx->priv_data) {
477 ret = AVERROR(ENOMEM);
478 goto end;
479 }
480 if(codec->priv_class){ //this can be droped once all user apps use avcodec_get_context_defaults3()
481 *(AVClass**)avctx->priv_data= codec->priv_class;
482 av_opt_set_defaults(avctx->priv_data);
483 }
484 }
485 } else {
486 avctx->priv_data = NULL;
487 }
488
489 if(avctx->coded_width && avctx->coded_height)
490 avcodec_set_dimensions(avctx, avctx->coded_width, avctx->coded_height);
491 else if(avctx->width && avctx->height)
492 avcodec_set_dimensions(avctx, avctx->width, avctx->height);
493
494 if ((avctx->coded_width || avctx->coded_height || avctx->width || avctx->height)
495 && ( av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx) < 0
496 || av_image_check_size(avctx->width, avctx->height, 0, avctx) < 0)) {
497 av_log(avctx, AV_LOG_WARNING, "ignoring invalid width/height values\n");
498 avcodec_set_dimensions(avctx, 0, 0);
499 }
500
501 #define SANE_NB_CHANNELS 128U
502 if (avctx->channels > SANE_NB_CHANNELS) {
503 ret = AVERROR(EINVAL);
504 goto free_and_end;
505 }
506
507 avctx->codec = codec;
508 if ((avctx->codec_type == AVMEDIA_TYPE_UNKNOWN || avctx->codec_type == codec->type) &&
509 avctx->codec_id == CODEC_ID_NONE) {
510 avctx->codec_type = codec->type;
511 avctx->codec_id = codec->id;
512 }
513 if(avctx->codec_id != codec->id || avctx->codec_type != codec->type){
514 av_log(avctx, AV_LOG_ERROR, "codec type or id mismatches\n");
515 goto free_and_end;
516 }
517 avctx->frame_number = 0;
518 if (avctx->codec->max_lowres < avctx->lowres) {
519 av_log(avctx, AV_LOG_ERROR, "The maximum value for lowres supported by the decoder is %d\n",
520 avctx->codec->max_lowres);
521 goto free_and_end;
522 }
523
524 if(avctx->codec->init){
525 ret = avctx->codec->init(avctx);
526 if (ret < 0) {
527 goto free_and_end;
528 }
529 }
530 ret=0;
531 end:
532 entangled_thread_counter--;
533
534 /* Release any user-supplied mutex. */
535 if (ff_lockmgr_cb) {
536 (*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_RELEASE);
537 }
538 return ret;
539 free_and_end:
540 av_freep(&avctx->priv_data);
541 avctx->codec= NULL;
542 goto end;
543 }
544
545 int attribute_align_arg avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size,
546 const short *samples)
547 {
548 if(buf_size < FF_MIN_BUFFER_SIZE && 0){
549 av_log(avctx, AV_LOG_ERROR, "buffer smaller than minimum size\n");
550 return -1;
551 }
552 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || samples){
553 int ret = avctx->codec->encode(avctx, buf, buf_size, samples);
554 avctx->frame_number++;
555 return ret;
556 }else
557 return 0;
558 }
559
560 int attribute_align_arg avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
561 const AVFrame *pict)
562 {
563 if(buf_size < FF_MIN_BUFFER_SIZE){
564 av_log(avctx, AV_LOG_ERROR, "buffer smaller than minimum size\n");
565 return -1;
566 }
567 if(av_image_check_size(avctx->width, avctx->height, 0, avctx))
568 return -1;
569 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || pict){
570 int ret = avctx->codec->encode(avctx, buf, buf_size, pict);
571 avctx->frame_number++;
572 emms_c(); //needed to avoid an emms_c() call before every return;
573
574 return ret;
575 }else
576 return 0;
577 }
578
579 int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size,
580 const AVSubtitle *sub)
581 {
582 int ret;
583 if(sub->start_display_time) {
584 av_log(avctx, AV_LOG_ERROR, "start_display_time must be 0.\n");
585 return -1;
586 }
587 if(sub->num_rects == 0 || !sub->rects)
588 return -1;
589 ret = avctx->codec->encode(avctx, buf, buf_size, sub);
590 avctx->frame_number++;
591 return ret;
592 }
593
594 #if LIBAVCODEC_VERSION_MAJOR < 53
595 int attribute_align_arg avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture,
596 int *got_picture_ptr,
597 const uint8_t *buf, int buf_size)
598 {
599 AVPacket avpkt;
600 av_init_packet(&avpkt);
601 avpkt.data = buf;
602 avpkt.size = buf_size;
603 // HACK for CorePNG to decode as normal PNG by default
604 avpkt.flags = AV_PKT_FLAG_KEY;
605
606 return avcodec_decode_video2(avctx, picture, got_picture_ptr, &avpkt);
607 }
608 #endif
609
610 int attribute_align_arg avcodec_decode_video2(AVCodecContext *avctx, AVFrame *picture,
611 int *got_picture_ptr,
612 AVPacket *avpkt)
613 {
614 int ret;
615
616 *got_picture_ptr= 0;
617 if((avctx->coded_width||avctx->coded_height) && av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx))
618 return -1;
619 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size){
620 ret = avctx->codec->decode(avctx, picture, got_picture_ptr,
621 avpkt);
622
623 emms_c(); //needed to avoid an emms_c() call before every return;
624
625 if (*got_picture_ptr)
626 avctx->frame_number++;
627 }else
628 ret= 0;
629
630 return ret;
631 }
632
633 #if LIBAVCODEC_VERSION_MAJOR < 53
634 int attribute_align_arg avcodec_decode_audio2(AVCodecContext *avctx, int16_t *samples,
635 int *frame_size_ptr,
636 const uint8_t *buf, int buf_size)
637 {
638 AVPacket avpkt;
639 av_init_packet(&avpkt);
640 avpkt.data = buf;
641 avpkt.size = buf_size;
642
643 return avcodec_decode_audio3(avctx, samples, frame_size_ptr, &avpkt);
644 }
645 #endif
646
647 int attribute_align_arg avcodec_decode_audio3(AVCodecContext *avctx, int16_t *samples,
648 int *frame_size_ptr,
649 AVPacket *avpkt)
650 {
651 int ret;
652
653 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size){
654 //FIXME remove the check below _after_ ensuring that all audio check that the available space is enough
655 if(*frame_size_ptr < AVCODEC_MAX_AUDIO_FRAME_SIZE){
656 av_log(avctx, AV_LOG_ERROR, "buffer smaller than AVCODEC_MAX_AUDIO_FRAME_SIZE\n");
657 return -1;
658 }
659 if(*frame_size_ptr < FF_MIN_BUFFER_SIZE ||
660 *frame_size_ptr < avctx->channels * avctx->frame_size * sizeof(int16_t)){
661 av_log(avctx, AV_LOG_ERROR, "buffer %d too small\n", *frame_size_ptr);
662 return -1;
663 }
664
665 ret = avctx->codec->decode(avctx, samples, frame_size_ptr, avpkt);
666 avctx->frame_number++;
667 }else{
668 ret= 0;
669 *frame_size_ptr=0;
670 }
671 return ret;
672 }
673
674 #if LIBAVCODEC_VERSION_MAJOR < 53
675 int avcodec_decode_subtitle(AVCodecContext *avctx, AVSubtitle *sub,
676 int *got_sub_ptr,
677 const uint8_t *buf, int buf_size)
678 {
679 AVPacket avpkt;
680 av_init_packet(&avpkt);
681 avpkt.data = buf;
682 avpkt.size = buf_size;
683
684 return avcodec_decode_subtitle2(avctx, sub, got_sub_ptr, &avpkt);
685 }
686 #endif
687
688 int avcodec_decode_subtitle2(AVCodecContext *avctx, AVSubtitle *sub,
689 int *got_sub_ptr,
690 AVPacket *avpkt)
691 {
692 int ret;
693
694 *got_sub_ptr = 0;
695 ret = avctx->codec->decode(avctx, sub, got_sub_ptr, avpkt);
696 if (*got_sub_ptr)
697 avctx->frame_number++;
698 return ret;
699 }
700
701 void avsubtitle_free(AVSubtitle *sub)
702 {
703 int i;
704
705 for (i = 0; i < sub->num_rects; i++)
706 {
707 av_freep(&sub->rects[i]->pict.data[0]);
708 av_freep(&sub->rects[i]->pict.data[1]);
709 av_freep(&sub->rects[i]->pict.data[2]);
710 av_freep(&sub->rects[i]->pict.data[3]);
711 av_freep(&sub->rects[i]->text);
712 av_freep(&sub->rects[i]->ass);
713 av_freep(&sub->rects[i]);
714 }
715
716 av_freep(&sub->rects);
717
718 memset(sub, 0, sizeof(AVSubtitle));
719 }
720
721 av_cold int avcodec_close(AVCodecContext *avctx)
722 {
723 /* If there is a user-supplied mutex locking routine, call it. */
724 if (ff_lockmgr_cb) {
725 if ((*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_OBTAIN))
726 return -1;
727 }
728
729 entangled_thread_counter++;
730 if(entangled_thread_counter != 1){
731 av_log(avctx, AV_LOG_ERROR, "insufficient thread locking around avcodec_open/close()\n");
732 entangled_thread_counter--;
733 return -1;
734 }
735
736 if (HAVE_THREADS && avctx->thread_opaque)
737 avcodec_thread_free(avctx);
738 if (avctx->codec && avctx->codec->close)
739 avctx->codec->close(avctx);
740 avcodec_default_free_buffers(avctx);
741 avctx->coded_frame = NULL;
742 av_freep(&avctx->priv_data);
743 if(avctx->codec && avctx->codec->encode)
744 av_freep(&avctx->extradata);
745 avctx->codec = NULL;
746 entangled_thread_counter--;
747
748 /* Release any user-supplied mutex. */
749 if (ff_lockmgr_cb) {
750 (*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_RELEASE);
751 }
752 return 0;
753 }
754
755 AVCodec *avcodec_find_encoder(enum CodecID id)
756 {
757 AVCodec *p, *experimental=NULL;
758 p = first_avcodec;
759 while (p) {
760 if (p->encode != NULL && p->id == id) {
761 if (p->capabilities & CODEC_CAP_EXPERIMENTAL && !experimental) {
762 experimental = p;
763 } else
764 return p;
765 }
766 p = p->next;
767 }
768 return experimental;
769 }
770
771 AVCodec *avcodec_find_encoder_by_name(const char *name)
772 {
773 AVCodec *p;
774 if (!name)
775 return NULL;
776 p = first_avcodec;
777 while (p) {
778 if (p->encode != NULL && strcmp(name,p->name) == 0)
779 return p;
780 p = p->next;
781 }
782 return NULL;
783 }
784
785 AVCodec *avcodec_find_decoder(enum CodecID id)
786 {
787 AVCodec *p;
788 p = first_avcodec;
789 while (p) {
790 if (p->decode != NULL && p->id == id)
791 return p;
792 p = p->next;
793 }
794 return NULL;
795 }
796
797 AVCodec *avcodec_find_decoder_by_name(const char *name)
798 {
799 AVCodec *p;
800 if (!name)
801 return NULL;
802 p = first_avcodec;
803 while (p) {
804 if (p->decode != NULL && strcmp(name,p->name) == 0)
805 return p;
806 p = p->next;
807 }
808 return NULL;
809 }
810
811 static int get_bit_rate(AVCodecContext *ctx)
812 {
813 int bit_rate;
814 int bits_per_sample;
815
816 switch(ctx->codec_type) {
817 case AVMEDIA_TYPE_VIDEO:
818 case AVMEDIA_TYPE_DATA:
819 case AVMEDIA_TYPE_SUBTITLE:
820 case AVMEDIA_TYPE_ATTACHMENT:
821 bit_rate = ctx->bit_rate;
822 break;
823 case AVMEDIA_TYPE_AUDIO:
824 bits_per_sample = av_get_bits_per_sample(ctx->codec_id);
825 bit_rate = bits_per_sample ? ctx->sample_rate * ctx->channels * bits_per_sample : ctx->bit_rate;
826 break;
827 default:
828 bit_rate = 0;
829 break;
830 }
831 return bit_rate;
832 }
833
834 size_t av_get_codec_tag_string(char *buf, size_t buf_size, unsigned int codec_tag)
835 {
836 int i, len, ret = 0;
837
838 for (i = 0; i < 4; i++) {
839 len = snprintf(buf, buf_size,
840 isprint(codec_tag&0xFF) ? "%c" : "[%d]", codec_tag&0xFF);
841 buf += len;
842 buf_size = buf_size > len ? buf_size - len : 0;
843 ret += len;
844 codec_tag>>=8;
845 }
846 return ret;
847 }
848
849 void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)
850 {
851 const char *codec_name;
852 AVCodec *p;
853 char buf1[32];
854 int bitrate;
855 AVRational display_aspect_ratio;
856
857 if (encode)
858 p = avcodec_find_encoder(enc->codec_id);
859 else
860 p = avcodec_find_decoder(enc->codec_id);
861
862 if (p) {
863 codec_name = p->name;
864 } else if (enc->codec_id == CODEC_ID_MPEG2TS) {
865 /* fake mpeg2 transport stream codec (currently not
866 registered) */
867 codec_name = "mpeg2ts";
868 } else if (enc->codec_name[0] != '\0') {
869 codec_name = enc->codec_name;
870 } else {
871 /* output avi tags */
872 char tag_buf[32];
873 av_get_codec_tag_string(tag_buf, sizeof(tag_buf), enc->codec_tag);
874 snprintf(buf1, sizeof(buf1), "%s / 0x%04X", tag_buf, enc->codec_tag);
875 codec_name = buf1;
876 }
877
878 switch(enc->codec_type) {
879 case AVMEDIA_TYPE_VIDEO:
880 snprintf(buf, buf_size,
881 "Video: %s%s",
882 codec_name, enc->mb_decision ? " (hq)" : "");
883 if (enc->pix_fmt != PIX_FMT_NONE) {
884 snprintf(buf + strlen(buf), buf_size - strlen(buf),
885 ", %s",
886 avcodec_get_pix_fmt_name(enc->pix_fmt));
887 }
888 if (enc->width) {
889 snprintf(buf + strlen(buf), buf_size - strlen(buf),
890 ", %dx%d",
891 enc->width, enc->height);
892 if (enc->sample_aspect_ratio.num) {
893 av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
894 enc->width*enc->sample_aspect_ratio.num,
895 enc->height*enc->sample_aspect_ratio.den,
896 1024*1024);
897 snprintf(buf + strlen(buf), buf_size - strlen(buf),
898 " [PAR %d:%d DAR %d:%d]",
899 enc->sample_aspect_ratio.num, enc->sample_aspect_ratio.den,
900 display_aspect_ratio.num, display_aspect_ratio.den);
901 }
902 if(av_log_get_level() >= AV_LOG_DEBUG){
903 int g= av_gcd(enc->time_base.num, enc->time_base.den);
904 snprintf(buf + strlen(buf), buf_size - strlen(buf),
905 ", %d/%d",
906 enc->time_base.num/g, enc->time_base.den/g);
907 }
908 }
909 if (encode) {
910 snprintf(buf + strlen(buf), buf_size - strlen(buf),
911 ", q=%d-%d", enc->qmin, enc->qmax);
912 }
913 break;
914 case AVMEDIA_TYPE_AUDIO:
915 snprintf(buf, buf_size,
916 "Audio: %s",
917 codec_name);
918 if (enc->sample_rate) {
919 snprintf(buf + strlen(buf), buf_size - strlen(buf),
920 ", %d Hz", enc->sample_rate);
921 }
922 av_strlcat(buf, ", ", buf_size);
923 avcodec_get_channel_layout_string(buf + strlen(buf), buf_size - strlen(buf), enc->channels, enc->channel_layout);
924 if (enc->sample_fmt != SAMPLE_FMT_NONE) {
925 snprintf(buf + strlen(buf), buf_size - strlen(buf),
926 ", %s", avcodec_get_sample_fmt_name(enc->sample_fmt));
927 }
928 break;
929 case AVMEDIA_TYPE_DATA:
930 snprintf(buf, buf_size, "Data: %s", codec_name);
931 break;
932 case AVMEDIA_TYPE_SUBTITLE:
933 snprintf(buf, buf_size, "Subtitle: %s", codec_name);
934 break;
935 case AVMEDIA_TYPE_ATTACHMENT:
936 snprintf(buf, buf_size, "Attachment: %s", codec_name);
937 break;
938 default:
939 snprintf(buf, buf_size, "Invalid Codec type %d", enc->codec_type);
940 return;
941 }
942 if (encode) {
943 if (enc->flags & CODEC_FLAG_PASS1)
944 snprintf(buf + strlen(buf), buf_size - strlen(buf),
945 ", pass 1");
946 if (enc->flags & CODEC_FLAG_PASS2)
947 snprintf(buf + strlen(buf), buf_size - strlen(buf),
948 ", pass 2");
949 }
950 bitrate = get_bit_rate(enc);
951 if (bitrate != 0) {
952 snprintf(buf + strlen(buf), buf_size - strlen(buf),
953 ", %d kb/s", bitrate / 1000);
954 }
955 }
956
957 unsigned avcodec_version( void )
958 {
959 return LIBAVCODEC_VERSION_INT;
960 }
961
962 const char *avcodec_configuration(void)
963 {
964 return FFMPEG_CONFIGURATION;
965 }
966
967 const char *avcodec_license(void)
968 {
969 #define LICENSE_PREFIX "libavcodec license: "
970 return LICENSE_PREFIX FFMPEG_LICENSE + sizeof(LICENSE_PREFIX) - 1;
971 }
972
973 void avcodec_init(void)
974 {
975 static int initialized = 0;
976
977 if (initialized != 0)
978 return;
979 initialized = 1;
980
981 dsputil_static_init();
982 }
983
984 void avcodec_flush_buffers(AVCodecContext *avctx)
985 {
986 if(avctx->codec->flush)
987 avctx->codec->flush(avctx);
988 }
989
990 void avcodec_default_free_buffers(AVCodecContext *s){
991 int i, j;
992
993 if(s->internal_buffer==NULL) return;
994
995 if (s->internal_buffer_count)
996 av_log(s, AV_LOG_WARNING, "Found %i unreleased buffers!\n", s->internal_buffer_count);
997 for(i=0; i<INTERNAL_BUFFER_SIZE; i++){
998 InternalBuffer *buf= &((InternalBuffer*)s->internal_buffer)[i];
999 for(j=0; j<4; j++){
1000 av_freep(&buf->base[j]);
1001 buf->data[j]= NULL;
1002 }
1003 }
1004 av_freep(&s->internal_buffer);
1005
1006 s->internal_buffer_count=0;
1007 }
1008
1009 char av_get_pict_type_char(int pict_type){
1010 switch(pict_type){
1011 case FF_I_TYPE: return 'I';
1012 case FF_P_TYPE: return 'P';
1013 case FF_B_TYPE: return 'B';
1014 case FF_S_TYPE: return 'S';
1015 case FF_SI_TYPE:return 'i';
1016 case FF_SP_TYPE:return 'p';
1017 case FF_BI_TYPE:return 'b';
1018 default: return '?';
1019 }
1020 }
1021
1022 int av_get_bits_per_sample(enum CodecID codec_id){
1023 switch(codec_id){
1024 case CODEC_ID_ADPCM_SBPRO_2:
1025 return 2;
1026 case CODEC_ID_ADPCM_SBPRO_3:
1027 return 3;
1028 case CODEC_ID_ADPCM_SBPRO_4:
1029 case CODEC_ID_ADPCM_CT:
1030 case CODEC_ID_ADPCM_IMA_WAV:
1031 case CODEC_ID_ADPCM_MS:
1032 case CODEC_ID_ADPCM_YAMAHA:
1033 return 4;
1034 case CODEC_ID_PCM_ALAW:
1035 case CODEC_ID_PCM_MULAW:
1036 case CODEC_ID_PCM_S8:
1037 case CODEC_ID_PCM_U8:
1038 case CODEC_ID_PCM_ZORK:
1039 return 8;
1040 case CODEC_ID_PCM_S16BE:
1041 case CODEC_ID_PCM_S16LE:
1042 case CODEC_ID_PCM_S16LE_PLANAR:
1043 case CODEC_ID_PCM_U16BE:
1044 case CODEC_ID_PCM_U16LE:
1045 return 16;
1046 case CODEC_ID_PCM_S24DAUD:
1047 case CODEC_ID_PCM_S24BE:
1048 case CODEC_ID_PCM_S24LE:
1049 case CODEC_ID_PCM_U24BE:
1050 case CODEC_ID_PCM_U24LE:
1051 return 24;
1052 case CODEC_ID_PCM_S32BE:
1053 case CODEC_ID_PCM_S32LE:
1054 case CODEC_ID_PCM_U32BE:
1055 case CODEC_ID_PCM_U32LE:
1056 case CODEC_ID_PCM_F32BE:
1057 case CODEC_ID_PCM_F32LE:
1058 return 32;
1059 case CODEC_ID_PCM_F64BE:
1060 case CODEC_ID_PCM_F64LE:
1061 return 64;
1062 default:
1063 return 0;
1064 }
1065 }
1066
1067 int av_get_bits_per_sample_format(enum SampleFormat sample_fmt) {
1068 switch (sample_fmt) {
1069 case SAMPLE_FMT_U8:
1070 return 8;
1071 case SAMPLE_FMT_S16:
1072 return 16;
1073 case SAMPLE_FMT_S32:
1074 case SAMPLE_FMT_FLT:
1075 return 32;
1076 case SAMPLE_FMT_DBL:
1077 return 64;
1078 default:
1079 return 0;
1080 }
1081 }
1082
1083 #if !HAVE_THREADS
1084 int avcodec_thread_init(AVCodecContext *s, int thread_count){
1085 s->thread_count = thread_count;
1086 return -1;
1087 }
1088 #endif
1089
1090 unsigned int av_xiphlacing(unsigned char *s, unsigned int v)
1091 {
1092 unsigned int n = 0;
1093
1094 while(v >= 0xff) {
1095 *s++ = 0xff;
1096 v -= 0xff;
1097 n++;
1098 }
1099 *s = v;
1100 n++;
1101 return n;
1102 }
1103
1104 #if LIBAVCODEC_VERSION_MAJOR < 53
1105 #include "libavcore/parseutils.h"
1106
1107 int av_parse_video_frame_size(int *width_ptr, int *height_ptr, const char *str)
1108 {
1109 return av_parse_video_size(width_ptr, height_ptr, str);
1110 }
1111
1112 int av_parse_video_frame_rate(AVRational *frame_rate, const char *arg)
1113 {
1114 return av_parse_video_rate(frame_rate, arg);
1115 }
1116 #endif
1117
1118 int ff_match_2uint16(const uint16_t (*tab)[2], int size, int a, int b){
1119 int i;
1120 for(i=0; i<size && !(tab[i][0]==a && tab[i][1]==b); i++);
1121 return i;
1122 }
1123
1124 void av_log_missing_feature(void *avc, const char *feature, int want_sample)
1125 {
1126 av_log(avc, AV_LOG_WARNING, "%s not implemented. Update your FFmpeg "
1127 "version to the newest one from SVN. If the problem still "
1128 "occurs, it means that your file has a feature which has not "
1129 "been implemented.", feature);
1130 if(want_sample)
1131 av_log_ask_for_sample(avc, NULL);
1132 else
1133 av_log(avc, AV_LOG_WARNING, "\n");
1134 }
1135
1136 void av_log_ask_for_sample(void *avc, const char *msg)
1137 {
1138 if (msg)
1139 av_log(avc, AV_LOG_WARNING, "%s ", msg);
1140 av_log(avc, AV_LOG_WARNING, "If you want to help, upload a sample "
1141 "of this file to ftp://upload.ffmpeg.org/MPlayer/incoming/ "
1142 "and contact the ffmpeg-devel mailing list.\n");
1143 }
1144
1145 static AVHWAccel *first_hwaccel = NULL;
1146
1147 void av_register_hwaccel(AVHWAccel *hwaccel)
1148 {
1149 AVHWAccel **p = &first_hwaccel;
1150 while (*p)
1151 p = &(*p)->next;
1152 *p = hwaccel;
1153 hwaccel->next = NULL;
1154 }
1155
1156 AVHWAccel *av_hwaccel_next(AVHWAccel *hwaccel)
1157 {
1158 return hwaccel ? hwaccel->next : first_hwaccel;
1159 }
1160
1161 AVHWAccel *ff_find_hwaccel(enum CodecID codec_id, enum PixelFormat pix_fmt)
1162 {
1163 AVHWAccel *hwaccel=NULL;
1164
1165 while((hwaccel= av_hwaccel_next(hwaccel))){
1166 if ( hwaccel->id == codec_id
1167 && hwaccel->pix_fmt == pix_fmt)
1168 return hwaccel;
1169 }
1170 return NULL;
1171 }
1172
1173 int av_lockmgr_register(int (*cb)(void **mutex, enum AVLockOp op))
1174 {
1175 if (ff_lockmgr_cb) {
1176 if (ff_lockmgr_cb(&codec_mutex, AV_LOCK_DESTROY))
1177 return -1;
1178 }
1179
1180 ff_lockmgr_cb = cb;
1181
1182 if (ff_lockmgr_cb) {
1183 if (ff_lockmgr_cb(&codec_mutex, AV_LOCK_CREATE))
1184 return -1;
1185 }
1186 return 0;
1187 }
1188
1189 unsigned int ff_toupper4(unsigned int x)
1190 {
1191 return toupper( x &0xFF)
1192 + (toupper((x>>8 )&0xFF)<<8 )
1193 + (toupper((x>>16)&0xFF)<<16)
1194 + (toupper((x>>24)&0xFF)<<24);
1195 }