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ffmpeg / libavcodec / utils.c @ 393cbb96

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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
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 * Lesser General Public License for more details.
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 *
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 * You should have received a copy of the GNU Lesser General Public
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 * License along with FFmpeg; if not, write to the Free Software
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 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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 */
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/audioconvert.h"
33
#include "libavcore/imgutils.h"
34
#include "libavcore/internal.h"
35
#include "libavcore/samplefmt.h"
36
#include "avcodec.h"
37
#include "dsputil.h"
38
#include "libavutil/opt.h"
39
#include "imgconvert.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
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
        for(i=0; i<4; i++){
265
            av_freep(&buf->base[i]);
266
            buf->data[i]= NULL;
267
        }
268
    }
269

    
270
    if(buf->base[0]){
271
        pic->age= *picture_number - buf->last_pic_num;
272
        buf->last_pic_num= *picture_number;
273
    }else{
274
        int h_chroma_shift, v_chroma_shift;
275
        int size[4] = {0};
276
        int tmpsize;
277
        int unaligned;
278
        AVPicture picture;
279
        int stride_align[4];
280

    
281
        avcodec_get_chroma_sub_sample(s->pix_fmt, &h_chroma_shift, &v_chroma_shift);
282

    
283
        avcodec_align_dimensions2(s, &w, &h, stride_align);
284

    
285
        if(!(s->flags&CODEC_FLAG_EMU_EDGE)){
286
            w+= EDGE_WIDTH*2;
287
            h+= EDGE_WIDTH*2;
288
        }
289

    
290
        do {
291
            // NOTE: do not align linesizes individually, this breaks e.g. assumptions
292
            // that linesize[0] == 2*linesize[1] in the MPEG-encoder for 4:2:2
293
            av_image_fill_linesizes(picture.linesize, s->pix_fmt, w);
294
            // increase alignment of w for next try (rhs gives the lowest bit set in w)
295
            w += w & ~(w-1);
296

    
297
            unaligned = 0;
298
            for (i=0; i<4; i++){
299
                unaligned |= picture.linesize[i] % stride_align[i];
300
            }
301
        } while (unaligned);
302

    
303
        tmpsize = av_image_fill_pointers(picture.data, s->pix_fmt, h, NULL, picture.linesize);
304
        if (tmpsize < 0)
305
            return -1;
306

    
307
        for (i=0; i<3 && picture.data[i+1]; i++)
308
            size[i] = picture.data[i+1] - picture.data[i];
309
        size[i] = tmpsize - (picture.data[i] - picture.data[0]);
310

    
311
        buf->last_pic_num= -256*256*256*64;
312
        memset(buf->base, 0, sizeof(buf->base));
313
        memset(buf->data, 0, sizeof(buf->data));
314

    
315
        for(i=0; i<4 && size[i]; i++){
316
            const int h_shift= i==0 ? 0 : h_chroma_shift;
317
            const int v_shift= i==0 ? 0 : v_chroma_shift;
318

    
319
            buf->linesize[i]= picture.linesize[i];
320

    
321
            buf->base[i]= av_malloc(size[i]+16); //FIXME 16
322
            if(buf->base[i]==NULL) return -1;
323
            memset(buf->base[i], 128, size[i]);
324

    
325
            // no edge if EDGE EMU or not planar YUV
326
            if((s->flags&CODEC_FLAG_EMU_EDGE) || !size[2])
327
                buf->data[i] = buf->base[i];
328
            else
329
                buf->data[i] = buf->base[i] + FFALIGN((buf->linesize[i]*EDGE_WIDTH>>v_shift) + (EDGE_WIDTH>>h_shift), stride_align[i]);
330
        }
331
        if(size[1] && !size[2])
332
            ff_set_systematic_pal2((uint32_t*)buf->data[1], s->pix_fmt);
333
        buf->width  = s->width;
334
        buf->height = s->height;
335
        buf->pix_fmt= s->pix_fmt;
336
        pic->age= 256*256*256*64;
337
    }
338
    pic->type= FF_BUFFER_TYPE_INTERNAL;
339

    
340
    for(i=0; i<4; i++){
341
        pic->base[i]= buf->base[i];
342
        pic->data[i]= buf->data[i];
343
        pic->linesize[i]= buf->linesize[i];
344
    }
345
    s->internal_buffer_count++;
346

    
347
    if(s->pkt) pic->pkt_pts= s->pkt->pts;
348
    else       pic->pkt_pts= AV_NOPTS_VALUE;
349
    pic->reordered_opaque= s->reordered_opaque;
350

    
351
    if(s->debug&FF_DEBUG_BUFFERS)
352
        av_log(s, AV_LOG_DEBUG, "default_get_buffer called on pic %p, %d buffers used\n", pic, s->internal_buffer_count);
353

    
354
    return 0;
355
}
356

    
357
void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic){
358
    int i;
359
    InternalBuffer *buf, *last;
360

    
361
    assert(pic->type==FF_BUFFER_TYPE_INTERNAL);
362
    assert(s->internal_buffer_count);
363

    
364
    buf = NULL; /* avoids warning */
365
    for(i=0; i<s->internal_buffer_count; i++){ //just 3-5 checks so is not worth to optimize
366
        buf= &((InternalBuffer*)s->internal_buffer)[i];
367
        if(buf->data[0] == pic->data[0])
368
            break;
369
    }
370
    assert(i < s->internal_buffer_count);
371
    s->internal_buffer_count--;
372
    last = &((InternalBuffer*)s->internal_buffer)[s->internal_buffer_count];
373

    
374
    FFSWAP(InternalBuffer, *buf, *last);
375

    
376
    for(i=0; i<4; i++){
377
        pic->data[i]=NULL;
378
//        pic->base[i]=NULL;
379
    }
380
//printf("R%X\n", pic->opaque);
381

    
382
    if(s->debug&FF_DEBUG_BUFFERS)
383
        av_log(s, AV_LOG_DEBUG, "default_release_buffer called on pic %p, %d buffers used\n", pic, s->internal_buffer_count);
384
}
385

    
386
int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic){
387
    AVFrame temp_pic;
388
    int i;
389

    
390
    /* If no picture return a new buffer */
391
    if(pic->data[0] == NULL) {
392
        /* We will copy from buffer, so must be readable */
393
        pic->buffer_hints |= FF_BUFFER_HINTS_READABLE;
394
        return s->get_buffer(s, pic);
395
    }
396

    
397
    /* If internal buffer type return the same buffer */
398
    if(pic->type == FF_BUFFER_TYPE_INTERNAL) {
399
        pic->reordered_opaque= s->reordered_opaque;
400
        return 0;
401
    }
402

    
403
    /*
404
     * Not internal type and reget_buffer not overridden, emulate cr buffer
405
     */
406
    temp_pic = *pic;
407
    for(i = 0; i < 4; i++)
408
        pic->data[i] = pic->base[i] = NULL;
409
    pic->opaque = NULL;
410
    /* Allocate new frame */
411
    if (s->get_buffer(s, pic))
412
        return -1;
413
    /* Copy image data from old buffer to new buffer */
414
    av_picture_copy((AVPicture*)pic, (AVPicture*)&temp_pic, s->pix_fmt, s->width,
415
             s->height);
416
    s->release_buffer(s, &temp_pic); // Release old frame
417
    return 0;
418
}
419

    
420
int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2),void *arg, int *ret, int count, int size){
421
    int i;
422

    
423
    for(i=0; i<count; i++){
424
        int r= func(c, (char*)arg + i*size);
425
        if(ret) ret[i]= r;
426
    }
427
    return 0;
428
}
429

    
430
int avcodec_default_execute2(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2, int jobnr, int threadnr),void *arg, int *ret, int count){
431
    int i;
432

    
433
    for(i=0; i<count; i++){
434
        int r= func(c, arg, i, 0);
435
        if(ret) ret[i]= r;
436
    }
437
    return 0;
438
}
439

    
440
enum PixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum PixelFormat *fmt){
441
    while (*fmt != PIX_FMT_NONE && ff_is_hwaccel_pix_fmt(*fmt))
442
        ++fmt;
443
    return fmt[0];
444
}
445

    
446
void avcodec_get_frame_defaults(AVFrame *pic){
447
    memset(pic, 0, sizeof(AVFrame));
448

    
449
    pic->pts= AV_NOPTS_VALUE;
450
    pic->key_frame= 1;
451
}
452

    
453
AVFrame *avcodec_alloc_frame(void){
454
    AVFrame *pic= av_malloc(sizeof(AVFrame));
455

    
456
    if(pic==NULL) return NULL;
457

    
458
    avcodec_get_frame_defaults(pic);
459

    
460
    return pic;
461
}
462

    
463
int attribute_align_arg avcodec_open(AVCodecContext *avctx, AVCodec *codec)
464
{
465
    int ret= -1;
466

    
467
    /* If there is a user-supplied mutex locking routine, call it. */
468
    if (ff_lockmgr_cb) {
469
        if ((*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_OBTAIN))
470
            return -1;
471
    }
472

    
473
    entangled_thread_counter++;
474
    if(entangled_thread_counter != 1){
475
        av_log(avctx, AV_LOG_ERROR, "insufficient thread locking around avcodec_open/close()\n");
476
        goto end;
477
    }
478

    
479
    if(avctx->codec || !codec)
480
        goto end;
481

    
482
    if (codec->priv_data_size > 0) {
483
      if(!avctx->priv_data){
484
        avctx->priv_data = av_mallocz(codec->priv_data_size);
485
        if (!avctx->priv_data) {
486
            ret = AVERROR(ENOMEM);
487
            goto end;
488
        }
489
        if(codec->priv_class){ //this can be droped once all user apps use   avcodec_get_context_defaults3()
490
            *(AVClass**)avctx->priv_data= codec->priv_class;
491
            av_opt_set_defaults(avctx->priv_data);
492
        }
493
      }
494
    } else {
495
        avctx->priv_data = NULL;
496
    }
497

    
498
    if(avctx->coded_width && avctx->coded_height)
499
        avcodec_set_dimensions(avctx, avctx->coded_width, avctx->coded_height);
500
    else if(avctx->width && avctx->height)
501
        avcodec_set_dimensions(avctx, avctx->width, avctx->height);
502

    
503
    if ((avctx->coded_width || avctx->coded_height || avctx->width || avctx->height)
504
        && (  av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx) < 0
505
           || av_image_check_size(avctx->width,       avctx->height,       0, avctx) < 0)) {
506
        av_log(avctx, AV_LOG_WARNING, "ignoring invalid width/height values\n");
507
        avcodec_set_dimensions(avctx, 0, 0);
508
    }
509

    
510
    /* if the decoder init function was already called previously,
511
       free the already allocated subtitle_header before overwriting it */
512
    if (codec->decode)
513
        av_freep(&avctx->subtitle_header);
514

    
515
#define SANE_NB_CHANNELS 128U
516
    if (avctx->channels > SANE_NB_CHANNELS) {
517
        ret = AVERROR(EINVAL);
518
        goto free_and_end;
519
    }
520

    
521
    avctx->codec = codec;
522
    if ((avctx->codec_type == AVMEDIA_TYPE_UNKNOWN || avctx->codec_type == codec->type) &&
523
        avctx->codec_id == CODEC_ID_NONE) {
524
        avctx->codec_type = codec->type;
525
        avctx->codec_id   = codec->id;
526
    }
527
    if(avctx->codec_id != codec->id || avctx->codec_type != codec->type){
528
        av_log(avctx, AV_LOG_ERROR, "codec type or id mismatches\n");
529
        goto free_and_end;
530
    }
531
    avctx->frame_number = 0;
532
    if (avctx->codec->max_lowres < avctx->lowres) {
533
        av_log(avctx, AV_LOG_ERROR, "The maximum value for lowres supported by the decoder is %d\n",
534
               avctx->codec->max_lowres);
535
        goto free_and_end;
536
    }
537

    
538
    if(avctx->codec->init){
539
        ret = avctx->codec->init(avctx);
540
        if (ret < 0) {
541
            goto free_and_end;
542
        }
543
    }
544
    ret=0;
545
end:
546
    entangled_thread_counter--;
547

    
548
    /* Release any user-supplied mutex. */
549
    if (ff_lockmgr_cb) {
550
        (*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_RELEASE);
551
    }
552
    return ret;
553
free_and_end:
554
    av_freep(&avctx->priv_data);
555
    avctx->codec= NULL;
556
    goto end;
557
}
558

    
559
int attribute_align_arg avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size,
560
                         const short *samples)
561
{
562
    if(buf_size < FF_MIN_BUFFER_SIZE && 0){
563
        av_log(avctx, AV_LOG_ERROR, "buffer smaller than minimum size\n");
564
        return -1;
565
    }
566
    if((avctx->codec->capabilities & CODEC_CAP_DELAY) || samples){
567
        int ret = avctx->codec->encode(avctx, buf, buf_size, samples);
568
        avctx->frame_number++;
569
        return ret;
570
    }else
571
        return 0;
572
}
573

    
574
int attribute_align_arg avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
575
                         const AVFrame *pict)
576
{
577
    if(buf_size < FF_MIN_BUFFER_SIZE){
578
        av_log(avctx, AV_LOG_ERROR, "buffer smaller than minimum size\n");
579
        return -1;
580
    }
581
    if(av_image_check_size(avctx->width, avctx->height, 0, avctx))
582
        return -1;
583
    if((avctx->codec->capabilities & CODEC_CAP_DELAY) || pict){
584
        int ret = avctx->codec->encode(avctx, buf, buf_size, pict);
585
        avctx->frame_number++;
586
        emms_c(); //needed to avoid an emms_c() call before every return;
587

    
588
        return ret;
589
    }else
590
        return 0;
591
}
592

    
593
int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size,
594
                            const AVSubtitle *sub)
595
{
596
    int ret;
597
    if(sub->start_display_time) {
598
        av_log(avctx, AV_LOG_ERROR, "start_display_time must be 0.\n");
599
        return -1;
600
    }
601
    if(sub->num_rects == 0 || !sub->rects)
602
        return -1;
603
    ret = avctx->codec->encode(avctx, buf, buf_size, sub);
604
    avctx->frame_number++;
605
    return ret;
606
}
607

    
608
#if FF_API_VIDEO_OLD
609
int attribute_align_arg avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture,
610
                         int *got_picture_ptr,
611
                         const uint8_t *buf, int buf_size)
612
{
613
    AVPacket avpkt;
614
    av_init_packet(&avpkt);
615
    avpkt.data = buf;
616
    avpkt.size = buf_size;
617
    // HACK for CorePNG to decode as normal PNG by default
618
    avpkt.flags = AV_PKT_FLAG_KEY;
619

    
620
    return avcodec_decode_video2(avctx, picture, got_picture_ptr, &avpkt);
621
}
622
#endif
623

    
624
int attribute_align_arg avcodec_decode_video2(AVCodecContext *avctx, AVFrame *picture,
625
                         int *got_picture_ptr,
626
                         AVPacket *avpkt)
627
{
628
    int ret;
629

    
630
    *got_picture_ptr= 0;
631
    if((avctx->coded_width||avctx->coded_height) && av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx))
632
        return -1;
633

    
634
    avctx->pkt = avpkt;
635

    
636
    if((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size){
637
        ret = avctx->codec->decode(avctx, picture, got_picture_ptr,
638
                                avpkt);
639

    
640
        emms_c(); //needed to avoid an emms_c() call before every return;
641

    
642
        if (*got_picture_ptr)
643
            avctx->frame_number++;
644
    }else
645
        ret= 0;
646

    
647
    return ret;
648
}
649

    
650
#if FF_API_AUDIO_OLD
651
int attribute_align_arg avcodec_decode_audio2(AVCodecContext *avctx, int16_t *samples,
652
                         int *frame_size_ptr,
653
                         const uint8_t *buf, int buf_size)
654
{
655
    AVPacket avpkt;
656
    av_init_packet(&avpkt);
657
    avpkt.data = buf;
658
    avpkt.size = buf_size;
659

    
660
    return avcodec_decode_audio3(avctx, samples, frame_size_ptr, &avpkt);
661
}
662
#endif
663

    
664
int attribute_align_arg avcodec_decode_audio3(AVCodecContext *avctx, int16_t *samples,
665
                         int *frame_size_ptr,
666
                         AVPacket *avpkt)
667
{
668
    int ret;
669

    
670
    avctx->pkt = avpkt;
671

    
672
    if((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size){
673
        //FIXME remove the check below _after_ ensuring that all audio check that the available space is enough
674
        if(*frame_size_ptr < AVCODEC_MAX_AUDIO_FRAME_SIZE){
675
            av_log(avctx, AV_LOG_ERROR, "buffer smaller than AVCODEC_MAX_AUDIO_FRAME_SIZE\n");
676
            return -1;
677
        }
678
        if(*frame_size_ptr < FF_MIN_BUFFER_SIZE ||
679
        *frame_size_ptr < avctx->channels * avctx->frame_size * sizeof(int16_t)){
680
            av_log(avctx, AV_LOG_ERROR, "buffer %d too small\n", *frame_size_ptr);
681
            return -1;
682
        }
683

    
684
        ret = avctx->codec->decode(avctx, samples, frame_size_ptr, avpkt);
685
        avctx->frame_number++;
686
    }else{
687
        ret= 0;
688
        *frame_size_ptr=0;
689
    }
690
    return ret;
691
}
692

    
693
#if FF_API_SUBTITLE_OLD
694
int avcodec_decode_subtitle(AVCodecContext *avctx, AVSubtitle *sub,
695
                            int *got_sub_ptr,
696
                            const uint8_t *buf, int buf_size)
697
{
698
    AVPacket avpkt;
699
    av_init_packet(&avpkt);
700
    avpkt.data = buf;
701
    avpkt.size = buf_size;
702

    
703
    return avcodec_decode_subtitle2(avctx, sub, got_sub_ptr, &avpkt);
704
}
705
#endif
706

    
707
int avcodec_decode_subtitle2(AVCodecContext *avctx, AVSubtitle *sub,
708
                            int *got_sub_ptr,
709
                            AVPacket *avpkt)
710
{
711
    int ret;
712

    
713
    avctx->pkt = avpkt;
714
    *got_sub_ptr = 0;
715
    ret = avctx->codec->decode(avctx, sub, got_sub_ptr, avpkt);
716
    if (*got_sub_ptr)
717
        avctx->frame_number++;
718
    return ret;
719
}
720

    
721
void avsubtitle_free(AVSubtitle *sub)
722
{
723
    int i;
724

    
725
    for (i = 0; i < sub->num_rects; i++)
726
    {
727
        av_freep(&sub->rects[i]->pict.data[0]);
728
        av_freep(&sub->rects[i]->pict.data[1]);
729
        av_freep(&sub->rects[i]->pict.data[2]);
730
        av_freep(&sub->rects[i]->pict.data[3]);
731
        av_freep(&sub->rects[i]->text);
732
        av_freep(&sub->rects[i]->ass);
733
        av_freep(&sub->rects[i]);
734
    }
735

    
736
    av_freep(&sub->rects);
737

    
738
    memset(sub, 0, sizeof(AVSubtitle));
739
}
740

    
741
av_cold int avcodec_close(AVCodecContext *avctx)
742
{
743
    /* If there is a user-supplied mutex locking routine, call it. */
744
    if (ff_lockmgr_cb) {
745
        if ((*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_OBTAIN))
746
            return -1;
747
    }
748

    
749
    entangled_thread_counter++;
750
    if(entangled_thread_counter != 1){
751
        av_log(avctx, AV_LOG_ERROR, "insufficient thread locking around avcodec_open/close()\n");
752
        entangled_thread_counter--;
753
        return -1;
754
    }
755

    
756
    if (HAVE_THREADS && avctx->thread_opaque)
757
        avcodec_thread_free(avctx);
758
    if (avctx->codec && avctx->codec->close)
759
        avctx->codec->close(avctx);
760
    avcodec_default_free_buffers(avctx);
761
    avctx->coded_frame = NULL;
762
    av_freep(&avctx->priv_data);
763
    if(avctx->codec && avctx->codec->encode)
764
        av_freep(&avctx->extradata);
765
    avctx->codec = NULL;
766
    entangled_thread_counter--;
767

    
768
    /* Release any user-supplied mutex. */
769
    if (ff_lockmgr_cb) {
770
        (*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_RELEASE);
771
    }
772
    return 0;
773
}
774

    
775
AVCodec *avcodec_find_encoder(enum CodecID id)
776
{
777
    AVCodec *p, *experimental=NULL;
778
    p = first_avcodec;
779
    while (p) {
780
        if (p->encode != NULL && p->id == id) {
781
            if (p->capabilities & CODEC_CAP_EXPERIMENTAL && !experimental) {
782
                experimental = p;
783
            } else
784
                return p;
785
        }
786
        p = p->next;
787
    }
788
    return experimental;
789
}
790

    
791
AVCodec *avcodec_find_encoder_by_name(const char *name)
792
{
793
    AVCodec *p;
794
    if (!name)
795
        return NULL;
796
    p = first_avcodec;
797
    while (p) {
798
        if (p->encode != NULL && strcmp(name,p->name) == 0)
799
            return p;
800
        p = p->next;
801
    }
802
    return NULL;
803
}
804

    
805
AVCodec *avcodec_find_decoder(enum CodecID id)
806
{
807
    AVCodec *p;
808
    p = first_avcodec;
809
    while (p) {
810
        if (p->decode != NULL && p->id == id)
811
            return p;
812
        p = p->next;
813
    }
814
    return NULL;
815
}
816

    
817
AVCodec *avcodec_find_decoder_by_name(const char *name)
818
{
819
    AVCodec *p;
820
    if (!name)
821
        return NULL;
822
    p = first_avcodec;
823
    while (p) {
824
        if (p->decode != NULL && strcmp(name,p->name) == 0)
825
            return p;
826
        p = p->next;
827
    }
828
    return NULL;
829
}
830

    
831
static int get_bit_rate(AVCodecContext *ctx)
832
{
833
    int bit_rate;
834
    int bits_per_sample;
835

    
836
    switch(ctx->codec_type) {
837
    case AVMEDIA_TYPE_VIDEO:
838
    case AVMEDIA_TYPE_DATA:
839
    case AVMEDIA_TYPE_SUBTITLE:
840
    case AVMEDIA_TYPE_ATTACHMENT:
841
        bit_rate = ctx->bit_rate;
842
        break;
843
    case AVMEDIA_TYPE_AUDIO:
844
        bits_per_sample = av_get_bits_per_sample(ctx->codec_id);
845
        bit_rate = bits_per_sample ? ctx->sample_rate * ctx->channels * bits_per_sample : ctx->bit_rate;
846
        break;
847
    default:
848
        bit_rate = 0;
849
        break;
850
    }
851
    return bit_rate;
852
}
853

    
854
size_t av_get_codec_tag_string(char *buf, size_t buf_size, unsigned int codec_tag)
855
{
856
    int i, len, ret = 0;
857

    
858
    for (i = 0; i < 4; i++) {
859
        len = snprintf(buf, buf_size,
860
                       isprint(codec_tag&0xFF) ? "%c" : "[%d]", codec_tag&0xFF);
861
        buf      += len;
862
        buf_size  = buf_size > len ? buf_size - len : 0;
863
        ret      += len;
864
        codec_tag>>=8;
865
    }
866
    return ret;
867
}
868

    
869
void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)
870
{
871
    const char *codec_name;
872
    AVCodec *p;
873
    char buf1[32];
874
    int bitrate;
875
    AVRational display_aspect_ratio;
876

    
877
    if (encode)
878
        p = avcodec_find_encoder(enc->codec_id);
879
    else
880
        p = avcodec_find_decoder(enc->codec_id);
881

    
882
    if (p) {
883
        codec_name = p->name;
884
    } else if (enc->codec_id == CODEC_ID_MPEG2TS) {
885
        /* fake mpeg2 transport stream codec (currently not
886
           registered) */
887
        codec_name = "mpeg2ts";
888
    } else if (enc->codec_name[0] != '\0') {
889
        codec_name = enc->codec_name;
890
    } else {
891
        /* output avi tags */
892
        char tag_buf[32];
893
        av_get_codec_tag_string(tag_buf, sizeof(tag_buf), enc->codec_tag);
894
        snprintf(buf1, sizeof(buf1), "%s / 0x%04X", tag_buf, enc->codec_tag);
895
        codec_name = buf1;
896
    }
897

    
898
    switch(enc->codec_type) {
899
    case AVMEDIA_TYPE_VIDEO:
900
        snprintf(buf, buf_size,
901
                 "Video: %s%s",
902
                 codec_name, enc->mb_decision ? " (hq)" : "");
903
        if (enc->pix_fmt != PIX_FMT_NONE) {
904
            snprintf(buf + strlen(buf), buf_size - strlen(buf),
905
                     ", %s",
906
                     avcodec_get_pix_fmt_name(enc->pix_fmt));
907
        }
908
        if (enc->width) {
909
            snprintf(buf + strlen(buf), buf_size - strlen(buf),
910
                     ", %dx%d",
911
                     enc->width, enc->height);
912
            if (enc->sample_aspect_ratio.num) {
913
                av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
914
                          enc->width*enc->sample_aspect_ratio.num,
915
                          enc->height*enc->sample_aspect_ratio.den,
916
                          1024*1024);
917
                snprintf(buf + strlen(buf), buf_size - strlen(buf),
918
                         " [PAR %d:%d DAR %d:%d]",
919
                         enc->sample_aspect_ratio.num, enc->sample_aspect_ratio.den,
920
                         display_aspect_ratio.num, display_aspect_ratio.den);
921
            }
922
            if(av_log_get_level() >= AV_LOG_DEBUG){
923
                int g= av_gcd(enc->time_base.num, enc->time_base.den);
924
                snprintf(buf + strlen(buf), buf_size - strlen(buf),
925
                     ", %d/%d",
926
                     enc->time_base.num/g, enc->time_base.den/g);
927
            }
928
        }
929
        if (encode) {
930
            snprintf(buf + strlen(buf), buf_size - strlen(buf),
931
                     ", q=%d-%d", enc->qmin, enc->qmax);
932
        }
933
        break;
934
    case AVMEDIA_TYPE_AUDIO:
935
        snprintf(buf, buf_size,
936
                 "Audio: %s",
937
                 codec_name);
938
        if (enc->sample_rate) {
939
            snprintf(buf + strlen(buf), buf_size - strlen(buf),
940
                     ", %d Hz", enc->sample_rate);
941
        }
942
        av_strlcat(buf, ", ", buf_size);
943
        av_get_channel_layout_string(buf + strlen(buf), buf_size - strlen(buf), enc->channels, enc->channel_layout);
944
        if (enc->sample_fmt != AV_SAMPLE_FMT_NONE) {
945
            snprintf(buf + strlen(buf), buf_size - strlen(buf),
946
                     ", %s", av_get_sample_fmt_name(enc->sample_fmt));
947
        }
948
        break;
949
    case AVMEDIA_TYPE_DATA:
950
        snprintf(buf, buf_size, "Data: %s", codec_name);
951
        break;
952
    case AVMEDIA_TYPE_SUBTITLE:
953
        snprintf(buf, buf_size, "Subtitle: %s", codec_name);
954
        break;
955
    case AVMEDIA_TYPE_ATTACHMENT:
956
        snprintf(buf, buf_size, "Attachment: %s", codec_name);
957
        break;
958
    default:
959
        snprintf(buf, buf_size, "Invalid Codec type %d", enc->codec_type);
960
        return;
961
    }
962
    if (encode) {
963
        if (enc->flags & CODEC_FLAG_PASS1)
964
            snprintf(buf + strlen(buf), buf_size - strlen(buf),
965
                     ", pass 1");
966
        if (enc->flags & CODEC_FLAG_PASS2)
967
            snprintf(buf + strlen(buf), buf_size - strlen(buf),
968
                     ", pass 2");
969
    }
970
    bitrate = get_bit_rate(enc);
971
    if (bitrate != 0) {
972
        snprintf(buf + strlen(buf), buf_size - strlen(buf),
973
                 ", %d kb/s", bitrate / 1000);
974
    }
975
}
976

    
977
const char *av_get_profile_name(const AVCodec *codec, int profile)
978
{
979
    const AVProfile *p;
980
    if (profile == FF_PROFILE_UNKNOWN || !codec->profiles)
981
        return NULL;
982

    
983
    for (p = codec->profiles; p->profile != FF_PROFILE_UNKNOWN; p++)
984
        if (p->profile == profile)
985
            return p->name;
986

    
987
    return NULL;
988
}
989

    
990
unsigned avcodec_version( void )
991
{
992
  return LIBAVCODEC_VERSION_INT;
993
}
994

    
995
const char *avcodec_configuration(void)
996
{
997
    return FFMPEG_CONFIGURATION;
998
}
999

    
1000
const char *avcodec_license(void)
1001
{
1002
#define LICENSE_PREFIX "libavcodec license: "
1003
    return LICENSE_PREFIX FFMPEG_LICENSE + sizeof(LICENSE_PREFIX) - 1;
1004
}
1005

    
1006
void avcodec_init(void)
1007
{
1008
    static int initialized = 0;
1009

    
1010
    if (initialized != 0)
1011
        return;
1012
    initialized = 1;
1013

    
1014
    dsputil_static_init();
1015
}
1016

    
1017
void avcodec_flush_buffers(AVCodecContext *avctx)
1018
{
1019
    if(avctx->codec->flush)
1020
        avctx->codec->flush(avctx);
1021
}
1022

    
1023
void avcodec_default_free_buffers(AVCodecContext *s){
1024
    int i, j;
1025

    
1026
    if(s->internal_buffer==NULL) return;
1027

    
1028
    if (s->internal_buffer_count)
1029
        av_log(s, AV_LOG_WARNING, "Found %i unreleased buffers!\n", s->internal_buffer_count);
1030
    for(i=0; i<INTERNAL_BUFFER_SIZE; i++){
1031
        InternalBuffer *buf= &((InternalBuffer*)s->internal_buffer)[i];
1032
        for(j=0; j<4; j++){
1033
            av_freep(&buf->base[j]);
1034
            buf->data[j]= NULL;
1035
        }
1036
    }
1037
    av_freep(&s->internal_buffer);
1038

    
1039
    s->internal_buffer_count=0;
1040
}
1041

    
1042
char av_get_pict_type_char(int pict_type){
1043
    switch(pict_type){
1044
    case FF_I_TYPE: return 'I';
1045
    case FF_P_TYPE: return 'P';
1046
    case FF_B_TYPE: return 'B';
1047
    case FF_S_TYPE: return 'S';
1048
    case FF_SI_TYPE:return 'i';
1049
    case FF_SP_TYPE:return 'p';
1050
    case FF_BI_TYPE:return 'b';
1051
    default:        return '?';
1052
    }
1053
}
1054

    
1055
int av_get_bits_per_sample(enum CodecID codec_id){
1056
    switch(codec_id){
1057
    case CODEC_ID_ADPCM_SBPRO_2:
1058
        return 2;
1059
    case CODEC_ID_ADPCM_SBPRO_3:
1060
        return 3;
1061
    case CODEC_ID_ADPCM_SBPRO_4:
1062
    case CODEC_ID_ADPCM_CT:
1063
    case CODEC_ID_ADPCM_IMA_WAV:
1064
    case CODEC_ID_ADPCM_MS:
1065
    case CODEC_ID_ADPCM_YAMAHA:
1066
        return 4;
1067
    case CODEC_ID_PCM_ALAW:
1068
    case CODEC_ID_PCM_MULAW:
1069
    case CODEC_ID_PCM_S8:
1070
    case CODEC_ID_PCM_U8:
1071
    case CODEC_ID_PCM_ZORK:
1072
        return 8;
1073
    case CODEC_ID_PCM_S16BE:
1074
    case CODEC_ID_PCM_S16LE:
1075
    case CODEC_ID_PCM_S16LE_PLANAR:
1076
    case CODEC_ID_PCM_U16BE:
1077
    case CODEC_ID_PCM_U16LE:
1078
        return 16;
1079
    case CODEC_ID_PCM_S24DAUD:
1080
    case CODEC_ID_PCM_S24BE:
1081
    case CODEC_ID_PCM_S24LE:
1082
    case CODEC_ID_PCM_U24BE:
1083
    case CODEC_ID_PCM_U24LE:
1084
        return 24;
1085
    case CODEC_ID_PCM_S32BE:
1086
    case CODEC_ID_PCM_S32LE:
1087
    case CODEC_ID_PCM_U32BE:
1088
    case CODEC_ID_PCM_U32LE:
1089
    case CODEC_ID_PCM_F32BE:
1090
    case CODEC_ID_PCM_F32LE:
1091
        return 32;
1092
    case CODEC_ID_PCM_F64BE:
1093
    case CODEC_ID_PCM_F64LE:
1094
        return 64;
1095
    default:
1096
        return 0;
1097
    }
1098
}
1099

    
1100
#if FF_API_OLD_SAMPLE_FMT
1101
int av_get_bits_per_sample_format(enum AVSampleFormat sample_fmt) {
1102
    return av_get_bits_per_sample_fmt(sample_fmt);
1103
}
1104
#endif
1105

    
1106
#if !HAVE_THREADS
1107
int avcodec_thread_init(AVCodecContext *s, int thread_count){
1108
    s->thread_count = thread_count;
1109
    return -1;
1110
}
1111
#endif
1112

    
1113
unsigned int av_xiphlacing(unsigned char *s, unsigned int v)
1114
{
1115
    unsigned int n = 0;
1116

    
1117
    while(v >= 0xff) {
1118
        *s++ = 0xff;
1119
        v -= 0xff;
1120
        n++;
1121
    }
1122
    *s = v;
1123
    n++;
1124
    return n;
1125
}
1126

    
1127
#if LIBAVCODEC_VERSION_MAJOR < 53
1128
#include "libavcore/parseutils.h"
1129

    
1130
int av_parse_video_frame_size(int *width_ptr, int *height_ptr, const char *str)
1131
{
1132
    return av_parse_video_size(width_ptr, height_ptr, str);
1133
}
1134

    
1135
int av_parse_video_frame_rate(AVRational *frame_rate, const char *arg)
1136
{
1137
    return av_parse_video_rate(frame_rate, arg);
1138
}
1139
#endif
1140

    
1141
int ff_match_2uint16(const uint16_t (*tab)[2], int size, int a, int b){
1142
    int i;
1143
    for(i=0; i<size && !(tab[i][0]==a && tab[i][1]==b); i++);
1144
    return i;
1145
}
1146

    
1147
void av_log_missing_feature(void *avc, const char *feature, int want_sample)
1148
{
1149
    av_log(avc, AV_LOG_WARNING, "%s not implemented. Update your FFmpeg "
1150
            "version to the newest one from SVN. If the problem still "
1151
            "occurs, it means that your file has a feature which has not "
1152
            "been implemented.", feature);
1153
    if(want_sample)
1154
        av_log_ask_for_sample(avc, NULL);
1155
    else
1156
        av_log(avc, AV_LOG_WARNING, "\n");
1157
}
1158

    
1159
void av_log_ask_for_sample(void *avc, const char *msg)
1160
{
1161
    if (msg)
1162
        av_log(avc, AV_LOG_WARNING, "%s ", msg);
1163
    av_log(avc, AV_LOG_WARNING, "If you want to help, upload a sample "
1164
            "of this file to ftp://upload.ffmpeg.org/MPlayer/incoming/ "
1165
            "and contact the ffmpeg-devel mailing list.\n");
1166
}
1167

    
1168
static AVHWAccel *first_hwaccel = NULL;
1169

    
1170
void av_register_hwaccel(AVHWAccel *hwaccel)
1171
{
1172
    AVHWAccel **p = &first_hwaccel;
1173
    while (*p)
1174
        p = &(*p)->next;
1175
    *p = hwaccel;
1176
    hwaccel->next = NULL;
1177
}
1178

    
1179
AVHWAccel *av_hwaccel_next(AVHWAccel *hwaccel)
1180
{
1181
    return hwaccel ? hwaccel->next : first_hwaccel;
1182
}
1183

    
1184
AVHWAccel *ff_find_hwaccel(enum CodecID codec_id, enum PixelFormat pix_fmt)
1185
{
1186
    AVHWAccel *hwaccel=NULL;
1187

    
1188
    while((hwaccel= av_hwaccel_next(hwaccel))){
1189
        if (   hwaccel->id      == codec_id
1190
            && hwaccel->pix_fmt == pix_fmt)
1191
            return hwaccel;
1192
    }
1193
    return NULL;
1194
}
1195

    
1196
int av_lockmgr_register(int (*cb)(void **mutex, enum AVLockOp op))
1197
{
1198
    if (ff_lockmgr_cb) {
1199
        if (ff_lockmgr_cb(&codec_mutex, AV_LOCK_DESTROY))
1200
            return -1;
1201
    }
1202

    
1203
    ff_lockmgr_cb = cb;
1204

    
1205
    if (ff_lockmgr_cb) {
1206
        if (ff_lockmgr_cb(&codec_mutex, AV_LOCK_CREATE))
1207
            return -1;
1208
    }
1209
    return 0;
1210
}
1211

    
1212
unsigned int ff_toupper4(unsigned int x)
1213
{
1214
    return     toupper( x     &0xFF)
1215
            + (toupper((x>>8 )&0xFF)<<8 )
1216
            + (toupper((x>>16)&0xFF)<<16)
1217
            + (toupper((x>>24)&0xFF)<<24);
1218
}