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ffmpeg / libavcodec / utils.c @ 688b09fa

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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 Libav.
7
 *
8
 * Libav is free software; you can redistribute it and/or
9
 * modify it under the terms of the GNU Lesser General Public
10
 * License as published by the Free Software Foundation; either
11
 * version 2.1 of the License, or (at your option) any later version.
12
 *
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 * Libav is distributed in the hope that it will be useful,
14
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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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 Libav; 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 "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, size_t 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, size_t 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
unsigned avcodec_get_edge_width(void)
98
{
99
    return EDGE_WIDTH;
100
}
101

    
102
void avcodec_set_dimensions(AVCodecContext *s, int width, int height){
103
    s->coded_width = width;
104
    s->coded_height= height;
105
    s->width = -((-width )>>s->lowres);
106
    s->height= -((-height)>>s->lowres);
107
}
108

    
109
typedef struct InternalBuffer{
110
    int last_pic_num;
111
    uint8_t *base[4];
112
    uint8_t *data[4];
113
    int linesize[4];
114
    int width, height;
115
    enum PixelFormat pix_fmt;
116
}InternalBuffer;
117

    
118
#define INTERNAL_BUFFER_SIZE 32
119

    
120
void avcodec_align_dimensions2(AVCodecContext *s, int *width, int *height, int linesize_align[4]){
121
    int w_align= 1;
122
    int h_align= 1;
123

    
124
    switch(s->pix_fmt){
125
    case PIX_FMT_YUV420P:
126
    case PIX_FMT_YUYV422:
127
    case PIX_FMT_UYVY422:
128
    case PIX_FMT_YUV422P:
129
    case PIX_FMT_YUV440P:
130
    case PIX_FMT_YUV444P:
131
    case PIX_FMT_GRAY8:
132
    case PIX_FMT_GRAY16BE:
133
    case PIX_FMT_GRAY16LE:
134
    case PIX_FMT_YUVJ420P:
135
    case PIX_FMT_YUVJ422P:
136
    case PIX_FMT_YUVJ440P:
137
    case PIX_FMT_YUVJ444P:
138
    case PIX_FMT_YUVA420P:
139
        w_align= 16; //FIXME check for non mpeg style codecs and use less alignment
140
        h_align= 16;
141
        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)
142
            h_align= 32; // interlaced is rounded up to 2 MBs
143
        break;
144
    case PIX_FMT_YUV411P:
145
    case PIX_FMT_UYYVYY411:
146
        w_align=32;
147
        h_align=8;
148
        break;
149
    case PIX_FMT_YUV410P:
150
        if(s->codec_id == CODEC_ID_SVQ1){
151
            w_align=64;
152
            h_align=64;
153
        }
154
    case PIX_FMT_RGB555:
155
        if(s->codec_id == CODEC_ID_RPZA){
156
            w_align=4;
157
            h_align=4;
158
        }
159
    case PIX_FMT_PAL8:
160
    case PIX_FMT_BGR8:
161
    case PIX_FMT_RGB8:
162
        if(s->codec_id == CODEC_ID_SMC){
163
            w_align=4;
164
            h_align=4;
165
        }
166
        break;
167
    case PIX_FMT_BGR24:
168
        if((s->codec_id == CODEC_ID_MSZH) || (s->codec_id == CODEC_ID_ZLIB)){
169
            w_align=4;
170
            h_align=4;
171
        }
172
        break;
173
    default:
174
        w_align= 1;
175
        h_align= 1;
176
        break;
177
    }
178

    
179
    *width = FFALIGN(*width , w_align);
180
    *height= FFALIGN(*height, h_align);
181
    if(s->codec_id == CODEC_ID_H264 || s->lowres)
182
        *height+=2; // some of the optimized chroma MC reads one line too much
183
                    // which is also done in mpeg decoders with lowres > 0
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
int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic){
217
    int i;
218
    int w= s->width;
219
    int h= s->height;
220
    InternalBuffer *buf;
221
    int *picture_number;
222

    
223
    if(pic->data[0]!=NULL) {
224
        av_log(s, AV_LOG_ERROR, "pic->data[0]!=NULL in avcodec_default_get_buffer\n");
225
        return -1;
226
    }
227
    if(s->internal_buffer_count >= INTERNAL_BUFFER_SIZE) {
228
        av_log(s, AV_LOG_ERROR, "internal_buffer_count overflow (missing release_buffer?)\n");
229
        return -1;
230
    }
231

    
232
    if(av_image_check_size(w, h, 0, s))
233
        return -1;
234

    
235
    if(s->internal_buffer==NULL){
236
        s->internal_buffer= av_mallocz((INTERNAL_BUFFER_SIZE+1)*sizeof(InternalBuffer));
237
    }
238
#if 0
239
    s->internal_buffer= av_fast_realloc(
240
        s->internal_buffer,
241
        &s->internal_buffer_size,
242
        sizeof(InternalBuffer)*FFMAX(99,  s->internal_buffer_count+1)/*FIXME*/
243
        );
244
#endif
245

    
246
    buf= &((InternalBuffer*)s->internal_buffer)[s->internal_buffer_count];
247
    picture_number= &(((InternalBuffer*)s->internal_buffer)[INTERNAL_BUFFER_SIZE]).last_pic_num; //FIXME ugly hack
248
    (*picture_number)++;
249

    
250
    if(buf->base[0] && (buf->width != w || buf->height != h || buf->pix_fmt != s->pix_fmt)){
251
        if(s->active_thread_type&FF_THREAD_FRAME) {
252
            av_log_missing_feature(s, "Width/height changing with frame threads is", 0);
253
            return -1;
254
        }
255

    
256
        for(i=0; i<4; i++){
257
            av_freep(&buf->base[i]);
258
            buf->data[i]= NULL;
259
        }
260
    }
261

    
262
    if(buf->base[0]){
263
        pic->age= *picture_number - buf->last_pic_num;
264
        buf->last_pic_num= *picture_number;
265
    }else{
266
        int h_chroma_shift, v_chroma_shift;
267
        int size[4] = {0};
268
        int tmpsize;
269
        int unaligned;
270
        AVPicture picture;
271
        int stride_align[4];
272

    
273
        avcodec_get_chroma_sub_sample(s->pix_fmt, &h_chroma_shift, &v_chroma_shift);
274

    
275
        avcodec_align_dimensions2(s, &w, &h, stride_align);
276

    
277
        if(!(s->flags&CODEC_FLAG_EMU_EDGE)){
278
            w+= EDGE_WIDTH*2;
279
            h+= EDGE_WIDTH*2;
280
        }
281

    
282
        do {
283
            // NOTE: do not align linesizes individually, this breaks e.g. assumptions
284
            // that linesize[0] == 2*linesize[1] in the MPEG-encoder for 4:2:2
285
            av_image_fill_linesizes(picture.linesize, s->pix_fmt, w);
286
            // increase alignment of w for next try (rhs gives the lowest bit set in w)
287
            w += w & ~(w-1);
288

    
289
            unaligned = 0;
290
            for (i=0; i<4; i++){
291
                unaligned |= picture.linesize[i] % stride_align[i];
292
            }
293
        } while (unaligned);
294

    
295
        tmpsize = av_image_fill_pointers(picture.data, s->pix_fmt, h, NULL, picture.linesize);
296
        if (tmpsize < 0)
297
            return -1;
298

    
299
        for (i=0; i<3 && picture.data[i+1]; i++)
300
            size[i] = picture.data[i+1] - picture.data[i];
301
        size[i] = tmpsize - (picture.data[i] - picture.data[0]);
302

    
303
        buf->last_pic_num= -256*256*256*64;
304
        memset(buf->base, 0, sizeof(buf->base));
305
        memset(buf->data, 0, sizeof(buf->data));
306

    
307
        for(i=0; i<4 && size[i]; i++){
308
            const int h_shift= i==0 ? 0 : h_chroma_shift;
309
            const int v_shift= i==0 ? 0 : v_chroma_shift;
310

    
311
            buf->linesize[i]= picture.linesize[i];
312

    
313
            buf->base[i]= av_malloc(size[i]+16); //FIXME 16
314
            if(buf->base[i]==NULL) return -1;
315
            memset(buf->base[i], 128, size[i]);
316

    
317
            // no edge if EDGE EMU or not planar YUV
318
            if((s->flags&CODEC_FLAG_EMU_EDGE) || !size[2])
319
                buf->data[i] = buf->base[i];
320
            else
321
                buf->data[i] = buf->base[i] + FFALIGN((buf->linesize[i]*EDGE_WIDTH>>v_shift) + (EDGE_WIDTH>>h_shift), stride_align[i]);
322
        }
323
        if(size[1] && !size[2])
324
            ff_set_systematic_pal2((uint32_t*)buf->data[1], s->pix_fmt);
325
        buf->width  = s->width;
326
        buf->height = s->height;
327
        buf->pix_fmt= s->pix_fmt;
328
        pic->age= 256*256*256*64;
329
    }
330
    pic->type= FF_BUFFER_TYPE_INTERNAL;
331

    
332
    for(i=0; i<4; i++){
333
        pic->base[i]= buf->base[i];
334
        pic->data[i]= buf->data[i];
335
        pic->linesize[i]= buf->linesize[i];
336
    }
337
    s->internal_buffer_count++;
338

    
339
    if(s->pkt) pic->pkt_pts= s->pkt->pts;
340
    else       pic->pkt_pts= AV_NOPTS_VALUE;
341
    pic->reordered_opaque= s->reordered_opaque;
342

    
343
    if(s->debug&FF_DEBUG_BUFFERS)
344
        av_log(s, AV_LOG_DEBUG, "default_get_buffer called on pic %p, %d buffers used\n", pic, s->internal_buffer_count);
345

    
346
    return 0;
347
}
348

    
349
void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic){
350
    int i;
351
    InternalBuffer *buf, *last;
352

    
353
    assert(pic->type==FF_BUFFER_TYPE_INTERNAL);
354
    assert(s->internal_buffer_count);
355

    
356
    buf = NULL; /* avoids warning */
357
    for(i=0; i<s->internal_buffer_count; i++){ //just 3-5 checks so is not worth to optimize
358
        buf= &((InternalBuffer*)s->internal_buffer)[i];
359
        if(buf->data[0] == pic->data[0])
360
            break;
361
    }
362
    assert(i < s->internal_buffer_count);
363
    s->internal_buffer_count--;
364
    last = &((InternalBuffer*)s->internal_buffer)[s->internal_buffer_count];
365

    
366
    FFSWAP(InternalBuffer, *buf, *last);
367

    
368
    for(i=0; i<4; i++){
369
        pic->data[i]=NULL;
370
//        pic->base[i]=NULL;
371
    }
372
//printf("R%X\n", pic->opaque);
373

    
374
    if(s->debug&FF_DEBUG_BUFFERS)
375
        av_log(s, AV_LOG_DEBUG, "default_release_buffer called on pic %p, %d buffers used\n", pic, s->internal_buffer_count);
376
}
377

    
378
int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic){
379
    AVFrame temp_pic;
380
    int i;
381

    
382
    /* If no picture return a new buffer */
383
    if(pic->data[0] == NULL) {
384
        /* We will copy from buffer, so must be readable */
385
        pic->buffer_hints |= FF_BUFFER_HINTS_READABLE;
386
        return s->get_buffer(s, pic);
387
    }
388

    
389
    /* If internal buffer type return the same buffer */
390
    if(pic->type == FF_BUFFER_TYPE_INTERNAL) {
391
        if(s->pkt) pic->pkt_pts= s->pkt->pts;
392
        else       pic->pkt_pts= AV_NOPTS_VALUE;
393
        pic->reordered_opaque= s->reordered_opaque;
394
        return 0;
395
    }
396

    
397
    /*
398
     * Not internal type and reget_buffer not overridden, emulate cr buffer
399
     */
400
    temp_pic = *pic;
401
    for(i = 0; i < 4; i++)
402
        pic->data[i] = pic->base[i] = NULL;
403
    pic->opaque = NULL;
404
    /* Allocate new frame */
405
    if (s->get_buffer(s, pic))
406
        return -1;
407
    /* Copy image data from old buffer to new buffer */
408
    av_picture_copy((AVPicture*)pic, (AVPicture*)&temp_pic, s->pix_fmt, s->width,
409
             s->height);
410
    s->release_buffer(s, &temp_pic); // Release old frame
411
    return 0;
412
}
413

    
414
int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2),void *arg, int *ret, int count, int size){
415
    int i;
416

    
417
    for(i=0; i<count; i++){
418
        int r= func(c, (char*)arg + i*size);
419
        if(ret) ret[i]= r;
420
    }
421
    return 0;
422
}
423

    
424
int avcodec_default_execute2(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2, int jobnr, int threadnr),void *arg, int *ret, int count){
425
    int i;
426

    
427
    for(i=0; i<count; i++){
428
        int r= func(c, arg, i, 0);
429
        if(ret) ret[i]= r;
430
    }
431
    return 0;
432
}
433

    
434
enum PixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum PixelFormat *fmt){
435
    while (*fmt != PIX_FMT_NONE && ff_is_hwaccel_pix_fmt(*fmt))
436
        ++fmt;
437
    return fmt[0];
438
}
439

    
440
void avcodec_get_frame_defaults(AVFrame *pic){
441
    memset(pic, 0, sizeof(AVFrame));
442

    
443
    pic->pts= AV_NOPTS_VALUE;
444
    pic->key_frame= 1;
445
}
446

    
447
AVFrame *avcodec_alloc_frame(void){
448
    AVFrame *pic= av_malloc(sizeof(AVFrame));
449

    
450
    if(pic==NULL) return NULL;
451

    
452
    avcodec_get_frame_defaults(pic);
453

    
454
    return pic;
455
}
456

    
457
int attribute_align_arg avcodec_open(AVCodecContext *avctx, AVCodec *codec)
458
{
459
    int ret = 0;
460

    
461
    /* If there is a user-supplied mutex locking routine, call it. */
462
    if (ff_lockmgr_cb) {
463
        if ((*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_OBTAIN))
464
            return -1;
465
    }
466

    
467
    entangled_thread_counter++;
468
    if(entangled_thread_counter != 1){
469
        av_log(avctx, AV_LOG_ERROR, "insufficient thread locking around avcodec_open/close()\n");
470
        ret = -1;
471
        goto end;
472
    }
473

    
474
    if(avctx->codec || !codec) {
475
        ret = AVERROR(EINVAL);
476
        goto end;
477
    }
478

    
479
    if (codec->priv_data_size > 0) {
480
      if(!avctx->priv_data){
481
        avctx->priv_data = av_mallocz(codec->priv_data_size);
482
        if (!avctx->priv_data) {
483
            ret = AVERROR(ENOMEM);
484
            goto end;
485
        }
486
        if(codec->priv_class){ //this can be droped once all user apps use   avcodec_get_context_defaults3()
487
            *(AVClass**)avctx->priv_data= codec->priv_class;
488
            av_opt_set_defaults(avctx->priv_data);
489
        }
490
      }
491
    } else {
492
        avctx->priv_data = NULL;
493
    }
494

    
495
    if(avctx->coded_width && avctx->coded_height)
496
        avcodec_set_dimensions(avctx, avctx->coded_width, avctx->coded_height);
497
    else if(avctx->width && avctx->height)
498
        avcodec_set_dimensions(avctx, avctx->width, avctx->height);
499

    
500
    if ((avctx->coded_width || avctx->coded_height || avctx->width || avctx->height)
501
        && (  av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx) < 0
502
           || av_image_check_size(avctx->width,       avctx->height,       0, avctx) < 0)) {
503
        av_log(avctx, AV_LOG_WARNING, "ignoring invalid width/height values\n");
504
        avcodec_set_dimensions(avctx, 0, 0);
505
    }
506

    
507
    /* if the decoder init function was already called previously,
508
       free the already allocated subtitle_header before overwriting it */
509
    if (codec->decode)
510
        av_freep(&avctx->subtitle_header);
511

    
512
#define SANE_NB_CHANNELS 128U
513
    if (avctx->channels > SANE_NB_CHANNELS) {
514
        ret = AVERROR(EINVAL);
515
        goto free_and_end;
516
    }
517

    
518
    avctx->codec = codec;
519
    if ((avctx->codec_type == AVMEDIA_TYPE_UNKNOWN || avctx->codec_type == codec->type) &&
520
        avctx->codec_id == CODEC_ID_NONE) {
521
        avctx->codec_type = codec->type;
522
        avctx->codec_id   = codec->id;
523
    }
524
    if (avctx->codec_id != codec->id || (avctx->codec_type != codec->type
525
                           && avctx->codec_type != AVMEDIA_TYPE_ATTACHMENT)) {
526
        av_log(avctx, AV_LOG_ERROR, "codec type or id mismatches\n");
527
        ret = AVERROR(EINVAL);
528
        goto free_and_end;
529
    }
530
    avctx->frame_number = 0;
531

    
532
    if (HAVE_THREADS && !avctx->thread_opaque) {
533
        ret = ff_thread_init(avctx);
534
        if (ret < 0) {
535
            goto free_and_end;
536
        }
537
    }
538

    
539
    if (avctx->codec->max_lowres < avctx->lowres) {
540
        av_log(avctx, AV_LOG_ERROR, "The maximum value for lowres supported by the decoder is %d\n",
541
               avctx->codec->max_lowres);
542
        ret = AVERROR(EINVAL);
543
        goto free_and_end;
544
    }
545
    if (avctx->codec->encode) {
546
        int i;
547
        if (avctx->codec->sample_fmts) {
548
            for (i = 0; avctx->codec->sample_fmts[i] != AV_SAMPLE_FMT_NONE; i++)
549
                if (avctx->sample_fmt == avctx->codec->sample_fmts[i])
550
                    break;
551
            if (avctx->codec->sample_fmts[i] == AV_SAMPLE_FMT_NONE) {
552
                av_log(avctx, AV_LOG_ERROR, "Specified sample_fmt is not supported.\n");
553
                ret = AVERROR(EINVAL);
554
                goto free_and_end;
555
            }
556
        }
557
        if (avctx->codec->supported_samplerates) {
558
            for (i = 0; avctx->codec->supported_samplerates[i] != 0; i++)
559
                if (avctx->sample_rate == avctx->codec->supported_samplerates[i])
560
                    break;
561
            if (avctx->codec->supported_samplerates[i] == 0) {
562
                av_log(avctx, AV_LOG_ERROR, "Specified sample_rate is not supported\n");
563
                ret = AVERROR(EINVAL);
564
                goto free_and_end;
565
            }
566
        }
567
        if (avctx->codec->channel_layouts) {
568
            if (!avctx->channel_layout) {
569
                av_log(avctx, AV_LOG_WARNING, "channel_layout not specified\n");
570
            } else {
571
                for (i = 0; avctx->codec->channel_layouts[i] != 0; i++)
572
                    if (avctx->channel_layout == avctx->codec->channel_layouts[i])
573
                        break;
574
                if (avctx->codec->channel_layouts[i] == 0) {
575
                    av_log(avctx, AV_LOG_ERROR, "Specified channel_layout is not supported\n");
576
                    ret = AVERROR(EINVAL);
577
                    goto free_and_end;
578
                }
579
            }
580
        }
581
        if (avctx->channel_layout && avctx->channels) {
582
            if (av_get_channel_layout_nb_channels(avctx->channel_layout) != avctx->channels) {
583
                av_log(avctx, AV_LOG_ERROR, "channel layout does not match number of channels\n");
584
                ret = AVERROR(EINVAL);
585
                goto free_and_end;
586
            }
587
        } else if (avctx->channel_layout) {
588
            avctx->channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
589
        }
590
    }
591

    
592
    if(avctx->codec->init && !(avctx->active_thread_type&FF_THREAD_FRAME)){
593
        ret = avctx->codec->init(avctx);
594
        if (ret < 0) {
595
            goto free_and_end;
596
        }
597
    }
598
end:
599
    entangled_thread_counter--;
600

    
601
    /* Release any user-supplied mutex. */
602
    if (ff_lockmgr_cb) {
603
        (*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_RELEASE);
604
    }
605
    return ret;
606
free_and_end:
607
    av_freep(&avctx->priv_data);
608
    avctx->codec= NULL;
609
    goto end;
610
}
611

    
612
int attribute_align_arg avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size,
613
                         const short *samples)
614
{
615
    if(buf_size < FF_MIN_BUFFER_SIZE && 0){
616
        av_log(avctx, AV_LOG_ERROR, "buffer smaller than minimum size\n");
617
        return -1;
618
    }
619
    if((avctx->codec->capabilities & CODEC_CAP_DELAY) || samples){
620
        int ret = avctx->codec->encode(avctx, buf, buf_size, samples);
621
        avctx->frame_number++;
622
        return ret;
623
    }else
624
        return 0;
625
}
626

    
627
int attribute_align_arg avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
628
                         const AVFrame *pict)
629
{
630
    if(buf_size < FF_MIN_BUFFER_SIZE){
631
        av_log(avctx, AV_LOG_ERROR, "buffer smaller than minimum size\n");
632
        return -1;
633
    }
634
    if(av_image_check_size(avctx->width, avctx->height, 0, avctx))
635
        return -1;
636
    if((avctx->codec->capabilities & CODEC_CAP_DELAY) || pict){
637
        int ret = avctx->codec->encode(avctx, buf, buf_size, pict);
638
        avctx->frame_number++;
639
        emms_c(); //needed to avoid an emms_c() call before every return;
640

    
641
        return ret;
642
    }else
643
        return 0;
644
}
645

    
646
int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size,
647
                            const AVSubtitle *sub)
648
{
649
    int ret;
650
    if(sub->start_display_time) {
651
        av_log(avctx, AV_LOG_ERROR, "start_display_time must be 0.\n");
652
        return -1;
653
    }
654
    if(sub->num_rects == 0 || !sub->rects)
655
        return -1;
656
    ret = avctx->codec->encode(avctx, buf, buf_size, sub);
657
    avctx->frame_number++;
658
    return ret;
659
}
660

    
661
int attribute_align_arg avcodec_decode_video2(AVCodecContext *avctx, AVFrame *picture,
662
                         int *got_picture_ptr,
663
                         AVPacket *avpkt)
664
{
665
    int ret;
666

    
667
    *got_picture_ptr= 0;
668
    if((avctx->coded_width||avctx->coded_height) && av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx))
669
        return -1;
670

    
671
    avctx->pkt = avpkt;
672

    
673
    if((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size || (avctx->active_thread_type&FF_THREAD_FRAME)){
674
        if (HAVE_PTHREADS && avctx->active_thread_type&FF_THREAD_FRAME)
675
             ret = ff_thread_decode_frame(avctx, picture, got_picture_ptr,
676
                                          avpkt);
677
        else {
678
            ret = avctx->codec->decode(avctx, picture, got_picture_ptr,
679
                              avpkt);
680
            picture->pkt_dts= avpkt->dts;
681
        }
682

    
683
        emms_c(); //needed to avoid an emms_c() call before every return;
684

    
685
        if (*got_picture_ptr)
686
            avctx->frame_number++;
687
    }else
688
        ret= 0;
689

    
690
    return ret;
691
}
692

    
693
int attribute_align_arg avcodec_decode_audio3(AVCodecContext *avctx, int16_t *samples,
694
                         int *frame_size_ptr,
695
                         AVPacket *avpkt)
696
{
697
    int ret;
698

    
699
    avctx->pkt = avpkt;
700

    
701
    if((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size){
702
        //FIXME remove the check below _after_ ensuring that all audio check that the available space is enough
703
        if(*frame_size_ptr < AVCODEC_MAX_AUDIO_FRAME_SIZE){
704
            av_log(avctx, AV_LOG_ERROR, "buffer smaller than AVCODEC_MAX_AUDIO_FRAME_SIZE\n");
705
            return -1;
706
        }
707
        if(*frame_size_ptr < FF_MIN_BUFFER_SIZE ||
708
        *frame_size_ptr < avctx->channels * avctx->frame_size * sizeof(int16_t)){
709
            av_log(avctx, AV_LOG_ERROR, "buffer %d too small\n", *frame_size_ptr);
710
            return -1;
711
        }
712

    
713
        ret = avctx->codec->decode(avctx, samples, frame_size_ptr, avpkt);
714
        avctx->frame_number++;
715
    }else{
716
        ret= 0;
717
        *frame_size_ptr=0;
718
    }
719
    return ret;
720
}
721

    
722
int avcodec_decode_subtitle2(AVCodecContext *avctx, AVSubtitle *sub,
723
                            int *got_sub_ptr,
724
                            AVPacket *avpkt)
725
{
726
    int ret;
727

    
728
    avctx->pkt = avpkt;
729
    *got_sub_ptr = 0;
730
    ret = avctx->codec->decode(avctx, sub, got_sub_ptr, avpkt);
731
    if (*got_sub_ptr)
732
        avctx->frame_number++;
733
    return ret;
734
}
735

    
736
void avsubtitle_free(AVSubtitle *sub)
737
{
738
    int i;
739

    
740
    for (i = 0; i < sub->num_rects; i++)
741
    {
742
        av_freep(&sub->rects[i]->pict.data[0]);
743
        av_freep(&sub->rects[i]->pict.data[1]);
744
        av_freep(&sub->rects[i]->pict.data[2]);
745
        av_freep(&sub->rects[i]->pict.data[3]);
746
        av_freep(&sub->rects[i]->text);
747
        av_freep(&sub->rects[i]->ass);
748
        av_freep(&sub->rects[i]);
749
    }
750

    
751
    av_freep(&sub->rects);
752

    
753
    memset(sub, 0, sizeof(AVSubtitle));
754
}
755

    
756
av_cold int avcodec_close(AVCodecContext *avctx)
757
{
758
    /* If there is a user-supplied mutex locking routine, call it. */
759
    if (ff_lockmgr_cb) {
760
        if ((*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_OBTAIN))
761
            return -1;
762
    }
763

    
764
    entangled_thread_counter++;
765
    if(entangled_thread_counter != 1){
766
        av_log(avctx, AV_LOG_ERROR, "insufficient thread locking around avcodec_open/close()\n");
767
        entangled_thread_counter--;
768
        return -1;
769
    }
770

    
771
    if (HAVE_THREADS && avctx->thread_opaque)
772
        ff_thread_free(avctx);
773
    if (avctx->codec && avctx->codec->close)
774
        avctx->codec->close(avctx);
775
    avcodec_default_free_buffers(avctx);
776
    avctx->coded_frame = NULL;
777
    av_freep(&avctx->priv_data);
778
    if(avctx->codec && avctx->codec->encode)
779
        av_freep(&avctx->extradata);
780
    avctx->codec = NULL;
781
    avctx->active_thread_type = 0;
782
    entangled_thread_counter--;
783

    
784
    /* Release any user-supplied mutex. */
785
    if (ff_lockmgr_cb) {
786
        (*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_RELEASE);
787
    }
788
    return 0;
789
}
790

    
791
AVCodec *avcodec_find_encoder(enum CodecID id)
792
{
793
    AVCodec *p, *experimental=NULL;
794
    p = first_avcodec;
795
    while (p) {
796
        if (p->encode != NULL && p->id == id) {
797
            if (p->capabilities & CODEC_CAP_EXPERIMENTAL && !experimental) {
798
                experimental = p;
799
            } else
800
                return p;
801
        }
802
        p = p->next;
803
    }
804
    return experimental;
805
}
806

    
807
AVCodec *avcodec_find_encoder_by_name(const char *name)
808
{
809
    AVCodec *p;
810
    if (!name)
811
        return NULL;
812
    p = first_avcodec;
813
    while (p) {
814
        if (p->encode != NULL && strcmp(name,p->name) == 0)
815
            return p;
816
        p = p->next;
817
    }
818
    return NULL;
819
}
820

    
821
AVCodec *avcodec_find_decoder(enum CodecID id)
822
{
823
    AVCodec *p;
824
    p = first_avcodec;
825
    while (p) {
826
        if (p->decode != NULL && p->id == id)
827
            return p;
828
        p = p->next;
829
    }
830
    return NULL;
831
}
832

    
833
AVCodec *avcodec_find_decoder_by_name(const char *name)
834
{
835
    AVCodec *p;
836
    if (!name)
837
        return NULL;
838
    p = first_avcodec;
839
    while (p) {
840
        if (p->decode != NULL && strcmp(name,p->name) == 0)
841
            return p;
842
        p = p->next;
843
    }
844
    return NULL;
845
}
846

    
847
static int get_bit_rate(AVCodecContext *ctx)
848
{
849
    int bit_rate;
850
    int bits_per_sample;
851

    
852
    switch(ctx->codec_type) {
853
    case AVMEDIA_TYPE_VIDEO:
854
    case AVMEDIA_TYPE_DATA:
855
    case AVMEDIA_TYPE_SUBTITLE:
856
    case AVMEDIA_TYPE_ATTACHMENT:
857
        bit_rate = ctx->bit_rate;
858
        break;
859
    case AVMEDIA_TYPE_AUDIO:
860
        bits_per_sample = av_get_bits_per_sample(ctx->codec_id);
861
        bit_rate = bits_per_sample ? ctx->sample_rate * ctx->channels * bits_per_sample : ctx->bit_rate;
862
        break;
863
    default:
864
        bit_rate = 0;
865
        break;
866
    }
867
    return bit_rate;
868
}
869

    
870
size_t av_get_codec_tag_string(char *buf, size_t buf_size, unsigned int codec_tag)
871
{
872
    int i, len, ret = 0;
873

    
874
    for (i = 0; i < 4; i++) {
875
        len = snprintf(buf, buf_size,
876
                       isprint(codec_tag&0xFF) ? "%c" : "[%d]", codec_tag&0xFF);
877
        buf      += len;
878
        buf_size  = buf_size > len ? buf_size - len : 0;
879
        ret      += len;
880
        codec_tag>>=8;
881
    }
882
    return ret;
883
}
884

    
885
void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)
886
{
887
    const char *codec_name;
888
    const char *profile = NULL;
889
    AVCodec *p;
890
    char buf1[32];
891
    int bitrate;
892
    AVRational display_aspect_ratio;
893

    
894
    if (encode)
895
        p = avcodec_find_encoder(enc->codec_id);
896
    else
897
        p = avcodec_find_decoder(enc->codec_id);
898

    
899
    if (p) {
900
        codec_name = p->name;
901
        profile = av_get_profile_name(p, enc->profile);
902
    } else if (enc->codec_id == CODEC_ID_MPEG2TS) {
903
        /* fake mpeg2 transport stream codec (currently not
904
           registered) */
905
        codec_name = "mpeg2ts";
906
    } else if (enc->codec_name[0] != '\0') {
907
        codec_name = enc->codec_name;
908
    } else {
909
        /* output avi tags */
910
        char tag_buf[32];
911
        av_get_codec_tag_string(tag_buf, sizeof(tag_buf), enc->codec_tag);
912
        snprintf(buf1, sizeof(buf1), "%s / 0x%04X", tag_buf, enc->codec_tag);
913
        codec_name = buf1;
914
    }
915

    
916
    switch(enc->codec_type) {
917
    case AVMEDIA_TYPE_VIDEO:
918
        snprintf(buf, buf_size,
919
                 "Video: %s%s",
920
                 codec_name, enc->mb_decision ? " (hq)" : "");
921
        if (profile)
922
            snprintf(buf + strlen(buf), buf_size - strlen(buf),
923
                     " (%s)", profile);
924
        if (enc->pix_fmt != PIX_FMT_NONE) {
925
            snprintf(buf + strlen(buf), buf_size - strlen(buf),
926
                     ", %s",
927
                     avcodec_get_pix_fmt_name(enc->pix_fmt));
928
        }
929
        if (enc->width) {
930
            snprintf(buf + strlen(buf), buf_size - strlen(buf),
931
                     ", %dx%d",
932
                     enc->width, enc->height);
933
            if (enc->sample_aspect_ratio.num) {
934
                av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
935
                          enc->width*enc->sample_aspect_ratio.num,
936
                          enc->height*enc->sample_aspect_ratio.den,
937
                          1024*1024);
938
                snprintf(buf + strlen(buf), buf_size - strlen(buf),
939
                         " [PAR %d:%d DAR %d:%d]",
940
                         enc->sample_aspect_ratio.num, enc->sample_aspect_ratio.den,
941
                         display_aspect_ratio.num, display_aspect_ratio.den);
942
            }
943
            if(av_log_get_level() >= AV_LOG_DEBUG){
944
                int g= av_gcd(enc->time_base.num, enc->time_base.den);
945
                snprintf(buf + strlen(buf), buf_size - strlen(buf),
946
                     ", %d/%d",
947
                     enc->time_base.num/g, enc->time_base.den/g);
948
            }
949
        }
950
        if (encode) {
951
            snprintf(buf + strlen(buf), buf_size - strlen(buf),
952
                     ", q=%d-%d", enc->qmin, enc->qmax);
953
        }
954
        break;
955
    case AVMEDIA_TYPE_AUDIO:
956
        snprintf(buf, buf_size,
957
                 "Audio: %s",
958
                 codec_name);
959
        if (profile)
960
            snprintf(buf + strlen(buf), buf_size - strlen(buf),
961
                     " (%s)", profile);
962
        if (enc->sample_rate) {
963
            snprintf(buf + strlen(buf), buf_size - strlen(buf),
964
                     ", %d Hz", enc->sample_rate);
965
        }
966
        av_strlcat(buf, ", ", buf_size);
967
        av_get_channel_layout_string(buf + strlen(buf), buf_size - strlen(buf), enc->channels, enc->channel_layout);
968
        if (enc->sample_fmt != AV_SAMPLE_FMT_NONE) {
969
            snprintf(buf + strlen(buf), buf_size - strlen(buf),
970
                     ", %s", av_get_sample_fmt_name(enc->sample_fmt));
971
        }
972
        break;
973
    case AVMEDIA_TYPE_DATA:
974
        snprintf(buf, buf_size, "Data: %s", codec_name);
975
        break;
976
    case AVMEDIA_TYPE_SUBTITLE:
977
        snprintf(buf, buf_size, "Subtitle: %s", codec_name);
978
        break;
979
    case AVMEDIA_TYPE_ATTACHMENT:
980
        snprintf(buf, buf_size, "Attachment: %s", codec_name);
981
        break;
982
    default:
983
        snprintf(buf, buf_size, "Invalid Codec type %d", enc->codec_type);
984
        return;
985
    }
986
    if (encode) {
987
        if (enc->flags & CODEC_FLAG_PASS1)
988
            snprintf(buf + strlen(buf), buf_size - strlen(buf),
989
                     ", pass 1");
990
        if (enc->flags & CODEC_FLAG_PASS2)
991
            snprintf(buf + strlen(buf), buf_size - strlen(buf),
992
                     ", pass 2");
993
    }
994
    bitrate = get_bit_rate(enc);
995
    if (bitrate != 0) {
996
        snprintf(buf + strlen(buf), buf_size - strlen(buf),
997
                 ", %d kb/s", bitrate / 1000);
998
    }
999
}
1000

    
1001
const char *av_get_profile_name(const AVCodec *codec, int profile)
1002
{
1003
    const AVProfile *p;
1004
    if (profile == FF_PROFILE_UNKNOWN || !codec->profiles)
1005
        return NULL;
1006

    
1007
    for (p = codec->profiles; p->profile != FF_PROFILE_UNKNOWN; p++)
1008
        if (p->profile == profile)
1009
            return p->name;
1010

    
1011
    return NULL;
1012
}
1013

    
1014
unsigned avcodec_version( void )
1015
{
1016
  return LIBAVCODEC_VERSION_INT;
1017
}
1018

    
1019
const char *avcodec_configuration(void)
1020
{
1021
    return LIBAV_CONFIGURATION;
1022
}
1023

    
1024
const char *avcodec_license(void)
1025
{
1026
#define LICENSE_PREFIX "libavcodec license: "
1027
    return LICENSE_PREFIX LIBAV_LICENSE + sizeof(LICENSE_PREFIX) - 1;
1028
}
1029

    
1030
void avcodec_init(void)
1031
{
1032
    static int initialized = 0;
1033

    
1034
    if (initialized != 0)
1035
        return;
1036
    initialized = 1;
1037

    
1038
    dsputil_static_init();
1039
}
1040

    
1041
void avcodec_flush_buffers(AVCodecContext *avctx)
1042
{
1043
    if(HAVE_PTHREADS && avctx->active_thread_type&FF_THREAD_FRAME)
1044
        ff_thread_flush(avctx);
1045
    if(avctx->codec->flush)
1046
        avctx->codec->flush(avctx);
1047
}
1048

    
1049
void avcodec_default_free_buffers(AVCodecContext *s){
1050
    int i, j;
1051

    
1052
    if(s->internal_buffer==NULL) return;
1053

    
1054
    if (s->internal_buffer_count)
1055
        av_log(s, AV_LOG_WARNING, "Found %i unreleased buffers!\n", s->internal_buffer_count);
1056
    for(i=0; i<INTERNAL_BUFFER_SIZE; i++){
1057
        InternalBuffer *buf= &((InternalBuffer*)s->internal_buffer)[i];
1058
        for(j=0; j<4; j++){
1059
            av_freep(&buf->base[j]);
1060
            buf->data[j]= NULL;
1061
        }
1062
    }
1063
    av_freep(&s->internal_buffer);
1064

    
1065
    s->internal_buffer_count=0;
1066
}
1067

    
1068
#if FF_API_OLD_FF_PICT_TYPES
1069
char av_get_pict_type_char(int pict_type){
1070
    return av_get_picture_type_char(pict_type);
1071
}
1072
#endif
1073

    
1074
int av_get_bits_per_sample(enum CodecID codec_id){
1075
    switch(codec_id){
1076
    case CODEC_ID_ADPCM_SBPRO_2:
1077
        return 2;
1078
    case CODEC_ID_ADPCM_SBPRO_3:
1079
        return 3;
1080
    case CODEC_ID_ADPCM_SBPRO_4:
1081
    case CODEC_ID_ADPCM_CT:
1082
    case CODEC_ID_ADPCM_IMA_WAV:
1083
    case CODEC_ID_ADPCM_MS:
1084
    case CODEC_ID_ADPCM_YAMAHA:
1085
        return 4;
1086
    case CODEC_ID_ADPCM_G722:
1087
    case CODEC_ID_PCM_ALAW:
1088
    case CODEC_ID_PCM_MULAW:
1089
    case CODEC_ID_PCM_S8:
1090
    case CODEC_ID_PCM_U8:
1091
    case CODEC_ID_PCM_ZORK:
1092
        return 8;
1093
    case CODEC_ID_PCM_S16BE:
1094
    case CODEC_ID_PCM_S16LE:
1095
    case CODEC_ID_PCM_S16LE_PLANAR:
1096
    case CODEC_ID_PCM_U16BE:
1097
    case CODEC_ID_PCM_U16LE:
1098
        return 16;
1099
    case CODEC_ID_PCM_S24DAUD:
1100
    case CODEC_ID_PCM_S24BE:
1101
    case CODEC_ID_PCM_S24LE:
1102
    case CODEC_ID_PCM_U24BE:
1103
    case CODEC_ID_PCM_U24LE:
1104
        return 24;
1105
    case CODEC_ID_PCM_S32BE:
1106
    case CODEC_ID_PCM_S32LE:
1107
    case CODEC_ID_PCM_U32BE:
1108
    case CODEC_ID_PCM_U32LE:
1109
    case CODEC_ID_PCM_F32BE:
1110
    case CODEC_ID_PCM_F32LE:
1111
        return 32;
1112
    case CODEC_ID_PCM_F64BE:
1113
    case CODEC_ID_PCM_F64LE:
1114
        return 64;
1115
    default:
1116
        return 0;
1117
    }
1118
}
1119

    
1120
#if FF_API_OLD_SAMPLE_FMT
1121
int av_get_bits_per_sample_format(enum AVSampleFormat sample_fmt) {
1122
    return av_get_bits_per_sample_fmt(sample_fmt);
1123
}
1124
#endif
1125

    
1126
#if !HAVE_THREADS
1127
int ff_thread_init(AVCodecContext *s){
1128
    return -1;
1129
}
1130
#endif
1131

    
1132
unsigned int av_xiphlacing(unsigned char *s, unsigned int v)
1133
{
1134
    unsigned int n = 0;
1135

    
1136
    while(v >= 0xff) {
1137
        *s++ = 0xff;
1138
        v -= 0xff;
1139
        n++;
1140
    }
1141
    *s = v;
1142
    n++;
1143
    return n;
1144
}
1145

    
1146
int ff_match_2uint16(const uint16_t (*tab)[2], int size, int a, int b){
1147
    int i;
1148
    for(i=0; i<size && !(tab[i][0]==a && tab[i][1]==b); i++);
1149
    return i;
1150
}
1151

    
1152
void av_log_missing_feature(void *avc, const char *feature, int want_sample)
1153
{
1154
    av_log(avc, AV_LOG_WARNING, "%s not implemented. Update your Libav "
1155
            "version to the newest one from Git. If the problem still "
1156
            "occurs, it means that your file has a feature which has not "
1157
            "been implemented.", feature);
1158
    if(want_sample)
1159
        av_log_ask_for_sample(avc, NULL);
1160
    else
1161
        av_log(avc, AV_LOG_WARNING, "\n");
1162
}
1163

    
1164
void av_log_ask_for_sample(void *avc, const char *msg, ...)
1165
{
1166
    va_list argument_list;
1167

    
1168
    va_start(argument_list, msg);
1169

    
1170
    if (msg)
1171
        av_vlog(avc, AV_LOG_WARNING, msg, argument_list);
1172
    av_log(avc, AV_LOG_WARNING, "If you want to help, upload a sample "
1173
            "of this file to ftp://upload.libav.org/incoming/ "
1174
            "and contact the libav-devel mailing list.\n");
1175

    
1176
    va_end(argument_list);
1177
}
1178

    
1179
static AVHWAccel *first_hwaccel = NULL;
1180

    
1181
void av_register_hwaccel(AVHWAccel *hwaccel)
1182
{
1183
    AVHWAccel **p = &first_hwaccel;
1184
    while (*p)
1185
        p = &(*p)->next;
1186
    *p = hwaccel;
1187
    hwaccel->next = NULL;
1188
}
1189

    
1190
AVHWAccel *av_hwaccel_next(AVHWAccel *hwaccel)
1191
{
1192
    return hwaccel ? hwaccel->next : first_hwaccel;
1193
}
1194

    
1195
AVHWAccel *ff_find_hwaccel(enum CodecID codec_id, enum PixelFormat pix_fmt)
1196
{
1197
    AVHWAccel *hwaccel=NULL;
1198

    
1199
    while((hwaccel= av_hwaccel_next(hwaccel))){
1200
        if (   hwaccel->id      == codec_id
1201
            && hwaccel->pix_fmt == pix_fmt)
1202
            return hwaccel;
1203
    }
1204
    return NULL;
1205
}
1206

    
1207
int av_lockmgr_register(int (*cb)(void **mutex, enum AVLockOp op))
1208
{
1209
    if (ff_lockmgr_cb) {
1210
        if (ff_lockmgr_cb(&codec_mutex, AV_LOCK_DESTROY))
1211
            return -1;
1212
    }
1213

    
1214
    ff_lockmgr_cb = cb;
1215

    
1216
    if (ff_lockmgr_cb) {
1217
        if (ff_lockmgr_cb(&codec_mutex, AV_LOCK_CREATE))
1218
            return -1;
1219
    }
1220
    return 0;
1221
}
1222

    
1223
unsigned int ff_toupper4(unsigned int x)
1224
{
1225
    return     toupper( x     &0xFF)
1226
            + (toupper((x>>8 )&0xFF)<<8 )
1227
            + (toupper((x>>16)&0xFF)<<16)
1228
            + (toupper((x>>24)&0xFF)<<24);
1229
}
1230

    
1231
#if !HAVE_PTHREADS
1232

    
1233
int ff_thread_get_buffer(AVCodecContext *avctx, AVFrame *f)
1234
{
1235
    f->owner = avctx;
1236
    return avctx->get_buffer(avctx, f);
1237
}
1238

    
1239
void ff_thread_release_buffer(AVCodecContext *avctx, AVFrame *f)
1240
{
1241
    f->owner->release_buffer(f->owner, f);
1242
}
1243

    
1244
void ff_thread_finish_setup(AVCodecContext *avctx)
1245
{
1246
}
1247

    
1248
void ff_thread_report_progress(AVFrame *f, int progress, int field)
1249
{
1250
}
1251

    
1252
void ff_thread_await_progress(AVFrame *f, int progress, int field)
1253
{
1254
}
1255

    
1256
#endif
1257

    
1258
#if FF_API_THREAD_INIT
1259
int avcodec_thread_init(AVCodecContext *s, int thread_count)
1260
{
1261
    s->thread_count = thread_count;
1262
    return ff_thread_init(s);
1263
}
1264
#endif