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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>
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 *
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 * This file is part of Libav.
7
 *
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 * Libav is free software; you can redistribute it and/or
9
 * modify it under the terms of the GNU Lesser General Public
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 * License as published by the Free Software Foundation; either
11
 * version 2.1 of the License, or (at your option) any later version.
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 *
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 * Libav is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * 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"
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#include "avcodec.h"
36
#include "dsputil.h"
37
#include "libavutil/opt.h"
38
#include "imgconvert.h"
39
#include "thread.h"
40
#include "audioconvert.h"
41
#include "internal.h"
42
#include <stdlib.h>
43
#include <stdarg.h>
44
#include <limits.h>
45
#include <float.h>
46

    
47
static int volatile entangled_thread_counter=0;
48
static int (*ff_lockmgr_cb)(void **mutex, enum AVLockOp op);
49
static void *codec_mutex;
50

    
51
void *av_fast_realloc(void *ptr, unsigned int *size, FF_INTERNALC_MEM_TYPE min_size)
52
{
53
    if(min_size < *size)
54
        return ptr;
55

    
56
    min_size= FFMAX(17*min_size/16 + 32, min_size);
57

    
58
    ptr= av_realloc(ptr, min_size);
59
    if(!ptr) //we could set this to the unmodified min_size but this is safer if the user lost the ptr and uses NULL now
60
        min_size= 0;
61

    
62
    *size= min_size;
63

    
64
    return ptr;
65
}
66

    
67
void av_fast_malloc(void *ptr, unsigned int *size, FF_INTERNALC_MEM_TYPE min_size)
68
{
69
    void **p = ptr;
70
    if (min_size < *size)
71
        return;
72
    min_size= FFMAX(17*min_size/16 + 32, min_size);
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    av_free(*p);
74
    *p = av_malloc(min_size);
75
    if (!*p) min_size = 0;
76
    *size= min_size;
77
}
78

    
79
/* encoder management */
80
static AVCodec *first_avcodec = NULL;
81

    
82
AVCodec *av_codec_next(AVCodec *c){
83
    if(c) return c->next;
84
    else  return first_avcodec;
85
}
86

    
87
void avcodec_register(AVCodec *codec)
88
{
89
    AVCodec **p;
90
    avcodec_init();
91
    p = &first_avcodec;
92
    while (*p != NULL) p = &(*p)->next;
93
    *p = codec;
94
    codec->next = NULL;
95
}
96

    
97
#if LIBAVCODEC_VERSION_MAJOR < 53
98
void register_avcodec(AVCodec *codec)
99
{
100
    avcodec_register(codec);
101
}
102
#endif
103

    
104
unsigned avcodec_get_edge_width(void)
105
{
106
    return EDGE_WIDTH;
107
}
108

    
109
void avcodec_set_dimensions(AVCodecContext *s, int width, int height){
110
    s->coded_width = width;
111
    s->coded_height= height;
112
    s->width = -((-width )>>s->lowres);
113
    s->height= -((-height)>>s->lowres);
114
}
115

    
116
typedef struct InternalBuffer{
117
    int last_pic_num;
118
    uint8_t *base[4];
119
    uint8_t *data[4];
120
    int linesize[4];
121
    int width, height;
122
    enum PixelFormat pix_fmt;
123
}InternalBuffer;
124

    
125
#define INTERNAL_BUFFER_SIZE 32
126

    
127
void avcodec_align_dimensions2(AVCodecContext *s, int *width, int *height, int linesize_align[4]){
128
    int w_align= 1;
129
    int h_align= 1;
130

    
131
    switch(s->pix_fmt){
132
    case PIX_FMT_YUV420P:
133
    case PIX_FMT_YUYV422:
134
    case PIX_FMT_UYVY422:
135
    case PIX_FMT_YUV422P:
136
    case PIX_FMT_YUV440P:
137
    case PIX_FMT_YUV444P:
138
    case PIX_FMT_GRAY8:
139
    case PIX_FMT_GRAY16BE:
140
    case PIX_FMT_GRAY16LE:
141
    case PIX_FMT_YUVJ420P:
142
    case PIX_FMT_YUVJ422P:
143
    case PIX_FMT_YUVJ440P:
144
    case PIX_FMT_YUVJ444P:
145
    case PIX_FMT_YUVA420P:
146
        w_align= 16; //FIXME check for non mpeg style codecs and use less alignment
147
        h_align= 16;
148
        if(s->codec_id == CODEC_ID_MPEG2VIDEO || s->codec_id == CODEC_ID_MJPEG || s->codec_id == CODEC_ID_AMV || s->codec_id == CODEC_ID_THP || s->codec_id == CODEC_ID_H264)
149
            h_align= 32; // interlaced is rounded up to 2 MBs
150
        break;
151
    case PIX_FMT_YUV411P:
152
    case PIX_FMT_UYYVYY411:
153
        w_align=32;
154
        h_align=8;
155
        break;
156
    case PIX_FMT_YUV410P:
157
        if(s->codec_id == CODEC_ID_SVQ1){
158
            w_align=64;
159
            h_align=64;
160
        }
161
    case PIX_FMT_RGB555:
162
        if(s->codec_id == CODEC_ID_RPZA){
163
            w_align=4;
164
            h_align=4;
165
        }
166
    case PIX_FMT_PAL8:
167
    case PIX_FMT_BGR8:
168
    case PIX_FMT_RGB8:
169
        if(s->codec_id == CODEC_ID_SMC){
170
            w_align=4;
171
            h_align=4;
172
        }
173
        break;
174
    case PIX_FMT_BGR24:
175
        if((s->codec_id == CODEC_ID_MSZH) || (s->codec_id == CODEC_ID_ZLIB)){
176
            w_align=4;
177
            h_align=4;
178
        }
179
        break;
180
    default:
181
        w_align= 1;
182
        h_align= 1;
183
        break;
184
    }
185

    
186
    *width = FFALIGN(*width , w_align);
187
    *height= FFALIGN(*height, h_align);
188
    if(s->codec_id == CODEC_ID_H264 || s->lowres)
189
        *height+=2; // some of the optimized chroma MC reads one line too much
190
                    // which is also done in mpeg decoders with lowres > 0
191

    
192
    linesize_align[0] =
193
    linesize_align[1] =
194
    linesize_align[2] =
195
    linesize_align[3] = STRIDE_ALIGN;
196
//STRIDE_ALIGN is 8 for SSE* but this does not work for SVQ1 chroma planes
197
//we could change STRIDE_ALIGN to 16 for x86/sse but it would increase the
198
//picture size unneccessarily in some cases. The solution here is not
199
//pretty and better ideas are welcome!
200
#if HAVE_MMX
201
    if(s->codec_id == CODEC_ID_SVQ1 || s->codec_id == CODEC_ID_VP5 ||
202
       s->codec_id == CODEC_ID_VP6 || s->codec_id == CODEC_ID_VP6F ||
203
       s->codec_id == CODEC_ID_VP6A) {
204
        linesize_align[0] =
205
        linesize_align[1] =
206
        linesize_align[2] = 16;
207
    }
208
#endif
209
}
210

    
211
void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height){
212
    int chroma_shift = av_pix_fmt_descriptors[s->pix_fmt].log2_chroma_w;
213
    int linesize_align[4];
214
    int align;
215
    avcodec_align_dimensions2(s, width, height, linesize_align);
216
    align = FFMAX(linesize_align[0], linesize_align[3]);
217
    linesize_align[1] <<= chroma_shift;
218
    linesize_align[2] <<= chroma_shift;
219
    align = FFMAX3(align, linesize_align[1], linesize_align[2]);
220
    *width=FFALIGN(*width, align);
221
}
222

    
223
#if LIBAVCODEC_VERSION_MAJOR < 53
224
int avcodec_check_dimensions(void *av_log_ctx, unsigned int w, unsigned int h){
225
    return av_image_check_size(w, h, 0, av_log_ctx);
226
}
227
#endif
228

    
229
int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic){
230
    int i;
231
    int w= s->width;
232
    int h= s->height;
233
    InternalBuffer *buf;
234
    int *picture_number;
235

    
236
    if(pic->data[0]!=NULL) {
237
        av_log(s, AV_LOG_ERROR, "pic->data[0]!=NULL in avcodec_default_get_buffer\n");
238
        return -1;
239
    }
240
    if(s->internal_buffer_count >= INTERNAL_BUFFER_SIZE) {
241
        av_log(s, AV_LOG_ERROR, "internal_buffer_count overflow (missing release_buffer?)\n");
242
        return -1;
243
    }
244

    
245
    if(av_image_check_size(w, h, 0, s))
246
        return -1;
247

    
248
    if(s->internal_buffer==NULL){
249
        s->internal_buffer= av_mallocz((INTERNAL_BUFFER_SIZE+1)*sizeof(InternalBuffer));
250
    }
251
#if 0
252
    s->internal_buffer= av_fast_realloc(
253
        s->internal_buffer,
254
        &s->internal_buffer_size,
255
        sizeof(InternalBuffer)*FFMAX(99,  s->internal_buffer_count+1)/*FIXME*/
256
        );
257
#endif
258

    
259
    buf= &((InternalBuffer*)s->internal_buffer)[s->internal_buffer_count];
260
    picture_number= &(((InternalBuffer*)s->internal_buffer)[INTERNAL_BUFFER_SIZE]).last_pic_num; //FIXME ugly hack
261
    (*picture_number)++;
262

    
263
    if(buf->base[0] && (buf->width != w || buf->height != h || buf->pix_fmt != s->pix_fmt)){
264
        if(s->active_thread_type&FF_THREAD_FRAME) {
265
            av_log_missing_feature(s, "Width/height changing with frame threads is", 0);
266
            return -1;
267
        }
268

    
269
        for(i=0; i<4; i++){
270
            av_freep(&buf->base[i]);
271
            buf->data[i]= NULL;
272
        }
273
    }
274

    
275
    if(buf->base[0]){
276
        pic->age= *picture_number - buf->last_pic_num;
277
        buf->last_pic_num= *picture_number;
278
    }else{
279
        int h_chroma_shift, v_chroma_shift;
280
        int size[4] = {0};
281
        int tmpsize;
282
        int unaligned;
283
        AVPicture picture;
284
        int stride_align[4];
285

    
286
        avcodec_get_chroma_sub_sample(s->pix_fmt, &h_chroma_shift, &v_chroma_shift);
287

    
288
        avcodec_align_dimensions2(s, &w, &h, stride_align);
289

    
290
        if(!(s->flags&CODEC_FLAG_EMU_EDGE)){
291
            w+= EDGE_WIDTH*2;
292
            h+= EDGE_WIDTH*2;
293
        }
294

    
295
        do {
296
            // NOTE: do not align linesizes individually, this breaks e.g. assumptions
297
            // that linesize[0] == 2*linesize[1] in the MPEG-encoder for 4:2:2
298
            av_image_fill_linesizes(picture.linesize, s->pix_fmt, w);
299
            // increase alignment of w for next try (rhs gives the lowest bit set in w)
300
            w += w & ~(w-1);
301

    
302
            unaligned = 0;
303
            for (i=0; i<4; i++){
304
                unaligned |= picture.linesize[i] % stride_align[i];
305
            }
306
        } while (unaligned);
307

    
308
        tmpsize = av_image_fill_pointers(picture.data, s->pix_fmt, h, NULL, picture.linesize);
309
        if (tmpsize < 0)
310
            return -1;
311

    
312
        for (i=0; i<3 && picture.data[i+1]; i++)
313
            size[i] = picture.data[i+1] - picture.data[i];
314
        size[i] = tmpsize - (picture.data[i] - picture.data[0]);
315

    
316
        buf->last_pic_num= -256*256*256*64;
317
        memset(buf->base, 0, sizeof(buf->base));
318
        memset(buf->data, 0, sizeof(buf->data));
319

    
320
        for(i=0; i<4 && size[i]; i++){
321
            const int h_shift= i==0 ? 0 : h_chroma_shift;
322
            const int v_shift= i==0 ? 0 : v_chroma_shift;
323

    
324
            buf->linesize[i]= picture.linesize[i];
325

    
326
            buf->base[i]= av_malloc(size[i]+16); //FIXME 16
327
            if(buf->base[i]==NULL) return -1;
328
            memset(buf->base[i], 128, size[i]);
329

    
330
            // no edge if EDGE EMU or not planar YUV
331
            if((s->flags&CODEC_FLAG_EMU_EDGE) || !size[2])
332
                buf->data[i] = buf->base[i];
333
            else
334
                buf->data[i] = buf->base[i] + FFALIGN((buf->linesize[i]*EDGE_WIDTH>>v_shift) + (EDGE_WIDTH>>h_shift), stride_align[i]);
335
        }
336
        if(size[1] && !size[2])
337
            ff_set_systematic_pal2((uint32_t*)buf->data[1], s->pix_fmt);
338
        buf->width  = s->width;
339
        buf->height = s->height;
340
        buf->pix_fmt= s->pix_fmt;
341
        pic->age= 256*256*256*64;
342
    }
343
    pic->type= FF_BUFFER_TYPE_INTERNAL;
344

    
345
    for(i=0; i<4; i++){
346
        pic->base[i]= buf->base[i];
347
        pic->data[i]= buf->data[i];
348
        pic->linesize[i]= buf->linesize[i];
349
    }
350
    s->internal_buffer_count++;
351

    
352
    if(s->pkt) pic->pkt_pts= s->pkt->pts;
353
    else       pic->pkt_pts= AV_NOPTS_VALUE;
354
    pic->reordered_opaque= s->reordered_opaque;
355

    
356
    if(s->debug&FF_DEBUG_BUFFERS)
357
        av_log(s, AV_LOG_DEBUG, "default_get_buffer called on pic %p, %d buffers used\n", pic, s->internal_buffer_count);
358

    
359
    return 0;
360
}
361

    
362
void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic){
363
    int i;
364
    InternalBuffer *buf, *last;
365

    
366
    assert(pic->type==FF_BUFFER_TYPE_INTERNAL);
367
    assert(s->internal_buffer_count);
368

    
369
    buf = NULL; /* avoids warning */
370
    for(i=0; i<s->internal_buffer_count; i++){ //just 3-5 checks so is not worth to optimize
371
        buf= &((InternalBuffer*)s->internal_buffer)[i];
372
        if(buf->data[0] == pic->data[0])
373
            break;
374
    }
375
    assert(i < s->internal_buffer_count);
376
    s->internal_buffer_count--;
377
    last = &((InternalBuffer*)s->internal_buffer)[s->internal_buffer_count];
378

    
379
    FFSWAP(InternalBuffer, *buf, *last);
380

    
381
    for(i=0; i<4; i++){
382
        pic->data[i]=NULL;
383
//        pic->base[i]=NULL;
384
    }
385
//printf("R%X\n", pic->opaque);
386

    
387
    if(s->debug&FF_DEBUG_BUFFERS)
388
        av_log(s, AV_LOG_DEBUG, "default_release_buffer called on pic %p, %d buffers used\n", pic, s->internal_buffer_count);
389
}
390

    
391
int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic){
392
    AVFrame temp_pic;
393
    int i;
394

    
395
    /* If no picture return a new buffer */
396
    if(pic->data[0] == NULL) {
397
        /* We will copy from buffer, so must be readable */
398
        pic->buffer_hints |= FF_BUFFER_HINTS_READABLE;
399
        return s->get_buffer(s, pic);
400
    }
401

    
402
    /* If internal buffer type return the same buffer */
403
    if(pic->type == FF_BUFFER_TYPE_INTERNAL) {
404
        if(s->pkt) pic->pkt_pts= s->pkt->pts;
405
        else       pic->pkt_pts= AV_NOPTS_VALUE;
406
        pic->reordered_opaque= s->reordered_opaque;
407
        return 0;
408
    }
409

    
410
    /*
411
     * Not internal type and reget_buffer not overridden, emulate cr buffer
412
     */
413
    temp_pic = *pic;
414
    for(i = 0; i < 4; i++)
415
        pic->data[i] = pic->base[i] = NULL;
416
    pic->opaque = NULL;
417
    /* Allocate new frame */
418
    if (s->get_buffer(s, pic))
419
        return -1;
420
    /* Copy image data from old buffer to new buffer */
421
    av_picture_copy((AVPicture*)pic, (AVPicture*)&temp_pic, s->pix_fmt, s->width,
422
             s->height);
423
    s->release_buffer(s, &temp_pic); // Release old frame
424
    return 0;
425
}
426

    
427
int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2),void *arg, int *ret, int count, int size){
428
    int i;
429

    
430
    for(i=0; i<count; i++){
431
        int r= func(c, (char*)arg + i*size);
432
        if(ret) ret[i]= r;
433
    }
434
    return 0;
435
}
436

    
437
int avcodec_default_execute2(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2, int jobnr, int threadnr),void *arg, int *ret, int count){
438
    int i;
439

    
440
    for(i=0; i<count; i++){
441
        int r= func(c, arg, i, 0);
442
        if(ret) ret[i]= r;
443
    }
444
    return 0;
445
}
446

    
447
enum PixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum PixelFormat *fmt){
448
    while (*fmt != PIX_FMT_NONE && ff_is_hwaccel_pix_fmt(*fmt))
449
        ++fmt;
450
    return fmt[0];
451
}
452

    
453
void avcodec_get_frame_defaults(AVFrame *pic){
454
    memset(pic, 0, sizeof(AVFrame));
455

    
456
    pic->pts= AV_NOPTS_VALUE;
457
    pic->key_frame= 1;
458
}
459

    
460
AVFrame *avcodec_alloc_frame(void){
461
    AVFrame *pic= av_malloc(sizeof(AVFrame));
462

    
463
    if(pic==NULL) return NULL;
464

    
465
    avcodec_get_frame_defaults(pic);
466

    
467
    return pic;
468
}
469

    
470
int attribute_align_arg avcodec_open(AVCodecContext *avctx, AVCodec *codec)
471
{
472
    int ret= -1;
473

    
474
    /* If there is a user-supplied mutex locking routine, call it. */
475
    if (ff_lockmgr_cb) {
476
        if ((*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_OBTAIN))
477
            return -1;
478
    }
479

    
480
    entangled_thread_counter++;
481
    if(entangled_thread_counter != 1){
482
        av_log(avctx, AV_LOG_ERROR, "insufficient thread locking around avcodec_open/close()\n");
483
        goto end;
484
    }
485

    
486
    if(avctx->codec || !codec)
487
        goto end;
488

    
489
    if (codec->priv_data_size > 0) {
490
      if(!avctx->priv_data){
491
        avctx->priv_data = av_mallocz(codec->priv_data_size);
492
        if (!avctx->priv_data) {
493
            ret = AVERROR(ENOMEM);
494
            goto end;
495
        }
496
        if(codec->priv_class){ //this can be droped once all user apps use   avcodec_get_context_defaults3()
497
            *(AVClass**)avctx->priv_data= codec->priv_class;
498
            av_opt_set_defaults(avctx->priv_data);
499
        }
500
      }
501
    } else {
502
        avctx->priv_data = NULL;
503
    }
504

    
505
    if(avctx->coded_width && avctx->coded_height)
506
        avcodec_set_dimensions(avctx, avctx->coded_width, avctx->coded_height);
507
    else if(avctx->width && avctx->height)
508
        avcodec_set_dimensions(avctx, avctx->width, avctx->height);
509

    
510
    if ((avctx->coded_width || avctx->coded_height || avctx->width || avctx->height)
511
        && (  av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx) < 0
512
           || av_image_check_size(avctx->width,       avctx->height,       0, avctx) < 0)) {
513
        av_log(avctx, AV_LOG_WARNING, "ignoring invalid width/height values\n");
514
        avcodec_set_dimensions(avctx, 0, 0);
515
    }
516

    
517
    /* if the decoder init function was already called previously,
518
       free the already allocated subtitle_header before overwriting it */
519
    if (codec->decode)
520
        av_freep(&avctx->subtitle_header);
521

    
522
#define SANE_NB_CHANNELS 128U
523
    if (avctx->channels > SANE_NB_CHANNELS) {
524
        ret = AVERROR(EINVAL);
525
        goto free_and_end;
526
    }
527

    
528
    avctx->codec = codec;
529
    if ((avctx->codec_type == AVMEDIA_TYPE_UNKNOWN || avctx->codec_type == codec->type) &&
530
        avctx->codec_id == CODEC_ID_NONE) {
531
        avctx->codec_type = codec->type;
532
        avctx->codec_id   = codec->id;
533
    }
534
    if (avctx->codec_id != codec->id || (avctx->codec_type != codec->type
535
                           && avctx->codec_type != AVMEDIA_TYPE_ATTACHMENT)) {
536
        av_log(avctx, AV_LOG_ERROR, "codec type or id mismatches\n");
537
        goto free_and_end;
538
    }
539
    avctx->frame_number = 0;
540

    
541
    if (HAVE_THREADS && !avctx->thread_opaque) {
542
        ret = ff_thread_init(avctx);
543
        if (ret < 0) {
544
            goto free_and_end;
545
        }
546
    }
547

    
548
    if (avctx->codec->max_lowres < avctx->lowres) {
549
        av_log(avctx, AV_LOG_ERROR, "The maximum value for lowres supported by the decoder is %d\n",
550
               avctx->codec->max_lowres);
551
        goto free_and_end;
552
    }
553
    if (avctx->codec->sample_fmts && avctx->codec->encode) {
554
        int i;
555
        for (i = 0; avctx->codec->sample_fmts[i] != AV_SAMPLE_FMT_NONE; i++)
556
            if (avctx->sample_fmt == avctx->codec->sample_fmts[i])
557
                break;
558
        if (avctx->codec->sample_fmts[i] == AV_SAMPLE_FMT_NONE) {
559
            av_log(avctx, AV_LOG_ERROR, "Specified sample_fmt is not supported.\n");
560
            goto free_and_end;
561
        }
562
    }
563

    
564
    if(avctx->codec->init && !(avctx->active_thread_type&FF_THREAD_FRAME)){
565
        ret = avctx->codec->init(avctx);
566
        if (ret < 0) {
567
            goto free_and_end;
568
        }
569
    }
570
    ret=0;
571
end:
572
    entangled_thread_counter--;
573

    
574
    /* Release any user-supplied mutex. */
575
    if (ff_lockmgr_cb) {
576
        (*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_RELEASE);
577
    }
578
    return ret;
579
free_and_end:
580
    av_freep(&avctx->priv_data);
581
    avctx->codec= NULL;
582
    goto end;
583
}
584

    
585
int attribute_align_arg avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size,
586
                         const short *samples)
587
{
588
    if(buf_size < FF_MIN_BUFFER_SIZE && 0){
589
        av_log(avctx, AV_LOG_ERROR, "buffer smaller than minimum size\n");
590
        return -1;
591
    }
592
    if((avctx->codec->capabilities & CODEC_CAP_DELAY) || samples){
593
        int ret = avctx->codec->encode(avctx, buf, buf_size, samples);
594
        avctx->frame_number++;
595
        return ret;
596
    }else
597
        return 0;
598
}
599

    
600
int attribute_align_arg avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
601
                         const AVFrame *pict)
602
{
603
    if(buf_size < FF_MIN_BUFFER_SIZE){
604
        av_log(avctx, AV_LOG_ERROR, "buffer smaller than minimum size\n");
605
        return -1;
606
    }
607
    if(av_image_check_size(avctx->width, avctx->height, 0, avctx))
608
        return -1;
609
    if((avctx->codec->capabilities & CODEC_CAP_DELAY) || pict){
610
        int ret = avctx->codec->encode(avctx, buf, buf_size, pict);
611
        avctx->frame_number++;
612
        emms_c(); //needed to avoid an emms_c() call before every return;
613

    
614
        return ret;
615
    }else
616
        return 0;
617
}
618

    
619
int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size,
620
                            const AVSubtitle *sub)
621
{
622
    int ret;
623
    if(sub->start_display_time) {
624
        av_log(avctx, AV_LOG_ERROR, "start_display_time must be 0.\n");
625
        return -1;
626
    }
627
    if(sub->num_rects == 0 || !sub->rects)
628
        return -1;
629
    ret = avctx->codec->encode(avctx, buf, buf_size, sub);
630
    avctx->frame_number++;
631
    return ret;
632
}
633

    
634
#if FF_API_VIDEO_OLD
635
int attribute_align_arg avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture,
636
                         int *got_picture_ptr,
637
                         const uint8_t *buf, int buf_size)
638
{
639
    AVPacket avpkt;
640
    av_init_packet(&avpkt);
641
    avpkt.data = buf;
642
    avpkt.size = buf_size;
643
    // HACK for CorePNG to decode as normal PNG by default
644
    avpkt.flags = AV_PKT_FLAG_KEY;
645

    
646
    return avcodec_decode_video2(avctx, picture, got_picture_ptr, &avpkt);
647
}
648
#endif
649

    
650
int attribute_align_arg avcodec_decode_video2(AVCodecContext *avctx, AVFrame *picture,
651
                         int *got_picture_ptr,
652
                         AVPacket *avpkt)
653
{
654
    int ret;
655

    
656
    *got_picture_ptr= 0;
657
    if((avctx->coded_width||avctx->coded_height) && av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx))
658
        return -1;
659

    
660
    avctx->pkt = avpkt;
661

    
662
    if((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size || (avctx->active_thread_type&FF_THREAD_FRAME)){
663
        if (HAVE_PTHREADS && avctx->active_thread_type&FF_THREAD_FRAME)
664
             ret = ff_thread_decode_frame(avctx, picture, got_picture_ptr,
665
                                          avpkt);
666
        else {
667
            ret = avctx->codec->decode(avctx, picture, got_picture_ptr,
668
                              avpkt);
669
            picture->pkt_dts= avpkt->dts;
670
        }
671

    
672
        emms_c(); //needed to avoid an emms_c() call before every return;
673

    
674
        if (*got_picture_ptr)
675
            avctx->frame_number++;
676
    }else
677
        ret= 0;
678

    
679
    return ret;
680
}
681

    
682
int attribute_align_arg avcodec_decode_audio3(AVCodecContext *avctx, int16_t *samples,
683
                         int *frame_size_ptr,
684
                         AVPacket *avpkt)
685
{
686
    int ret;
687

    
688
    avctx->pkt = avpkt;
689

    
690
    if((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size){
691
        //FIXME remove the check below _after_ ensuring that all audio check that the available space is enough
692
        if(*frame_size_ptr < AVCODEC_MAX_AUDIO_FRAME_SIZE){
693
            av_log(avctx, AV_LOG_ERROR, "buffer smaller than AVCODEC_MAX_AUDIO_FRAME_SIZE\n");
694
            return -1;
695
        }
696
        if(*frame_size_ptr < FF_MIN_BUFFER_SIZE ||
697
        *frame_size_ptr < avctx->channels * avctx->frame_size * sizeof(int16_t)){
698
            av_log(avctx, AV_LOG_ERROR, "buffer %d too small\n", *frame_size_ptr);
699
            return -1;
700
        }
701

    
702
        ret = avctx->codec->decode(avctx, samples, frame_size_ptr, avpkt);
703
        avctx->frame_number++;
704
    }else{
705
        ret= 0;
706
        *frame_size_ptr=0;
707
    }
708
    return ret;
709
}
710

    
711
#if FF_API_SUBTITLE_OLD
712
int avcodec_decode_subtitle(AVCodecContext *avctx, AVSubtitle *sub,
713
                            int *got_sub_ptr,
714
                            const uint8_t *buf, int buf_size)
715
{
716
    AVPacket avpkt;
717
    av_init_packet(&avpkt);
718
    avpkt.data = buf;
719
    avpkt.size = buf_size;
720

    
721
    return avcodec_decode_subtitle2(avctx, sub, got_sub_ptr, &avpkt);
722
}
723
#endif
724

    
725
int avcodec_decode_subtitle2(AVCodecContext *avctx, AVSubtitle *sub,
726
                            int *got_sub_ptr,
727
                            AVPacket *avpkt)
728
{
729
    int ret;
730

    
731
    avctx->pkt = avpkt;
732
    *got_sub_ptr = 0;
733
    ret = avctx->codec->decode(avctx, sub, got_sub_ptr, avpkt);
734
    if (*got_sub_ptr)
735
        avctx->frame_number++;
736
    return ret;
737
}
738

    
739
void avsubtitle_free(AVSubtitle *sub)
740
{
741
    int i;
742

    
743
    for (i = 0; i < sub->num_rects; i++)
744
    {
745
        av_freep(&sub->rects[i]->pict.data[0]);
746
        av_freep(&sub->rects[i]->pict.data[1]);
747
        av_freep(&sub->rects[i]->pict.data[2]);
748
        av_freep(&sub->rects[i]->pict.data[3]);
749
        av_freep(&sub->rects[i]->text);
750
        av_freep(&sub->rects[i]->ass);
751
        av_freep(&sub->rects[i]);
752
    }
753

    
754
    av_freep(&sub->rects);
755

    
756
    memset(sub, 0, sizeof(AVSubtitle));
757
}
758

    
759
av_cold int avcodec_close(AVCodecContext *avctx)
760
{
761
    /* If there is a user-supplied mutex locking routine, call it. */
762
    if (ff_lockmgr_cb) {
763
        if ((*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_OBTAIN))
764
            return -1;
765
    }
766

    
767
    entangled_thread_counter++;
768
    if(entangled_thread_counter != 1){
769
        av_log(avctx, AV_LOG_ERROR, "insufficient thread locking around avcodec_open/close()\n");
770
        entangled_thread_counter--;
771
        return -1;
772
    }
773

    
774
    if (HAVE_THREADS && avctx->thread_opaque)
775
        ff_thread_free(avctx);
776
    if (avctx->codec && avctx->codec->close)
777
        avctx->codec->close(avctx);
778
    avcodec_default_free_buffers(avctx);
779
    avctx->coded_frame = NULL;
780
    av_freep(&avctx->priv_data);
781
    if(avctx->codec && avctx->codec->encode)
782
        av_freep(&avctx->extradata);
783
    avctx->codec = NULL;
784
    avctx->active_thread_type = 0;
785
    entangled_thread_counter--;
786

    
787
    /* Release any user-supplied mutex. */
788
    if (ff_lockmgr_cb) {
789
        (*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_RELEASE);
790
    }
791
    return 0;
792
}
793

    
794
AVCodec *avcodec_find_encoder(enum CodecID id)
795
{
796
    AVCodec *p, *experimental=NULL;
797
    p = first_avcodec;
798
    while (p) {
799
        if (p->encode != NULL && p->id == id) {
800
            if (p->capabilities & CODEC_CAP_EXPERIMENTAL && !experimental) {
801
                experimental = p;
802
            } else
803
                return p;
804
        }
805
        p = p->next;
806
    }
807
    return experimental;
808
}
809

    
810
AVCodec *avcodec_find_encoder_by_name(const char *name)
811
{
812
    AVCodec *p;
813
    if (!name)
814
        return NULL;
815
    p = first_avcodec;
816
    while (p) {
817
        if (p->encode != NULL && strcmp(name,p->name) == 0)
818
            return p;
819
        p = p->next;
820
    }
821
    return NULL;
822
}
823

    
824
AVCodec *avcodec_find_decoder(enum CodecID id)
825
{
826
    AVCodec *p;
827
    p = first_avcodec;
828
    while (p) {
829
        if (p->decode != NULL && p->id == id)
830
            return p;
831
        p = p->next;
832
    }
833
    return NULL;
834
}
835

    
836
AVCodec *avcodec_find_decoder_by_name(const char *name)
837
{
838
    AVCodec *p;
839
    if (!name)
840
        return NULL;
841
    p = first_avcodec;
842
    while (p) {
843
        if (p->decode != NULL && strcmp(name,p->name) == 0)
844
            return p;
845
        p = p->next;
846
    }
847
    return NULL;
848
}
849

    
850
static int get_bit_rate(AVCodecContext *ctx)
851
{
852
    int bit_rate;
853
    int bits_per_sample;
854

    
855
    switch(ctx->codec_type) {
856
    case AVMEDIA_TYPE_VIDEO:
857
    case AVMEDIA_TYPE_DATA:
858
    case AVMEDIA_TYPE_SUBTITLE:
859
    case AVMEDIA_TYPE_ATTACHMENT:
860
        bit_rate = ctx->bit_rate;
861
        break;
862
    case AVMEDIA_TYPE_AUDIO:
863
        bits_per_sample = av_get_bits_per_sample(ctx->codec_id);
864
        bit_rate = bits_per_sample ? ctx->sample_rate * ctx->channels * bits_per_sample : ctx->bit_rate;
865
        break;
866
    default:
867
        bit_rate = 0;
868
        break;
869
    }
870
    return bit_rate;
871
}
872

    
873
size_t av_get_codec_tag_string(char *buf, size_t buf_size, unsigned int codec_tag)
874
{
875
    int i, len, ret = 0;
876

    
877
    for (i = 0; i < 4; i++) {
878
        len = snprintf(buf, buf_size,
879
                       isprint(codec_tag&0xFF) ? "%c" : "[%d]", codec_tag&0xFF);
880
        buf      += len;
881
        buf_size  = buf_size > len ? buf_size - len : 0;
882
        ret      += len;
883
        codec_tag>>=8;
884
    }
885
    return ret;
886
}
887

    
888
void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)
889
{
890
    const char *codec_name;
891
    const char *profile = NULL;
892
    AVCodec *p;
893
    char buf1[32];
894
    int bitrate;
895
    AVRational display_aspect_ratio;
896

    
897
    if (encode)
898
        p = avcodec_find_encoder(enc->codec_id);
899
    else
900
        p = avcodec_find_decoder(enc->codec_id);
901

    
902
    if (p) {
903
        codec_name = p->name;
904
        profile = av_get_profile_name(p, enc->profile);
905
    } else if (enc->codec_id == CODEC_ID_MPEG2TS) {
906
        /* fake mpeg2 transport stream codec (currently not
907
           registered) */
908
        codec_name = "mpeg2ts";
909
    } else if (enc->codec_name[0] != '\0') {
910
        codec_name = enc->codec_name;
911
    } else {
912
        /* output avi tags */
913
        char tag_buf[32];
914
        av_get_codec_tag_string(tag_buf, sizeof(tag_buf), enc->codec_tag);
915
        snprintf(buf1, sizeof(buf1), "%s / 0x%04X", tag_buf, enc->codec_tag);
916
        codec_name = buf1;
917
    }
918

    
919
    switch(enc->codec_type) {
920
    case AVMEDIA_TYPE_VIDEO:
921
        snprintf(buf, buf_size,
922
                 "Video: %s%s",
923
                 codec_name, enc->mb_decision ? " (hq)" : "");
924
        if (profile)
925
            snprintf(buf + strlen(buf), buf_size - strlen(buf),
926
                     " (%s)", profile);
927
        if (enc->pix_fmt != PIX_FMT_NONE) {
928
            snprintf(buf + strlen(buf), buf_size - strlen(buf),
929
                     ", %s",
930
                     avcodec_get_pix_fmt_name(enc->pix_fmt));
931
        }
932
        if (enc->width) {
933
            snprintf(buf + strlen(buf), buf_size - strlen(buf),
934
                     ", %dx%d",
935
                     enc->width, enc->height);
936
            if (enc->sample_aspect_ratio.num) {
937
                av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
938
                          enc->width*enc->sample_aspect_ratio.num,
939
                          enc->height*enc->sample_aspect_ratio.den,
940
                          1024*1024);
941
                snprintf(buf + strlen(buf), buf_size - strlen(buf),
942
                         " [PAR %d:%d DAR %d:%d]",
943
                         enc->sample_aspect_ratio.num, enc->sample_aspect_ratio.den,
944
                         display_aspect_ratio.num, display_aspect_ratio.den);
945
            }
946
            if(av_log_get_level() >= AV_LOG_DEBUG){
947
                int g= av_gcd(enc->time_base.num, enc->time_base.den);
948
                snprintf(buf + strlen(buf), buf_size - strlen(buf),
949
                     ", %d/%d",
950
                     enc->time_base.num/g, enc->time_base.den/g);
951
            }
952
        }
953
        if (encode) {
954
            snprintf(buf + strlen(buf), buf_size - strlen(buf),
955
                     ", q=%d-%d", enc->qmin, enc->qmax);
956
        }
957
        break;
958
    case AVMEDIA_TYPE_AUDIO:
959
        snprintf(buf, buf_size,
960
                 "Audio: %s",
961
                 codec_name);
962
        if (profile)
963
            snprintf(buf + strlen(buf), buf_size - strlen(buf),
964
                     " (%s)", profile);
965
        if (enc->sample_rate) {
966
            snprintf(buf + strlen(buf), buf_size - strlen(buf),
967
                     ", %d Hz", enc->sample_rate);
968
        }
969
        av_strlcat(buf, ", ", buf_size);
970
        av_get_channel_layout_string(buf + strlen(buf), buf_size - strlen(buf), enc->channels, enc->channel_layout);
971
        if (enc->sample_fmt != AV_SAMPLE_FMT_NONE) {
972
            snprintf(buf + strlen(buf), buf_size - strlen(buf),
973
                     ", %s", av_get_sample_fmt_name(enc->sample_fmt));
974
        }
975
        break;
976
    case AVMEDIA_TYPE_DATA:
977
        snprintf(buf, buf_size, "Data: %s", codec_name);
978
        break;
979
    case AVMEDIA_TYPE_SUBTITLE:
980
        snprintf(buf, buf_size, "Subtitle: %s", codec_name);
981
        break;
982
    case AVMEDIA_TYPE_ATTACHMENT:
983
        snprintf(buf, buf_size, "Attachment: %s", codec_name);
984
        break;
985
    default:
986
        snprintf(buf, buf_size, "Invalid Codec type %d", enc->codec_type);
987
        return;
988
    }
989
    if (encode) {
990
        if (enc->flags & CODEC_FLAG_PASS1)
991
            snprintf(buf + strlen(buf), buf_size - strlen(buf),
992
                     ", pass 1");
993
        if (enc->flags & CODEC_FLAG_PASS2)
994
            snprintf(buf + strlen(buf), buf_size - strlen(buf),
995
                     ", pass 2");
996
    }
997
    bitrate = get_bit_rate(enc);
998
    if (bitrate != 0) {
999
        snprintf(buf + strlen(buf), buf_size - strlen(buf),
1000
                 ", %d kb/s", bitrate / 1000);
1001
    }
1002
}
1003

    
1004
const char *av_get_profile_name(const AVCodec *codec, int profile)
1005
{
1006
    const AVProfile *p;
1007
    if (profile == FF_PROFILE_UNKNOWN || !codec->profiles)
1008
        return NULL;
1009

    
1010
    for (p = codec->profiles; p->profile != FF_PROFILE_UNKNOWN; p++)
1011
        if (p->profile == profile)
1012
            return p->name;
1013

    
1014
    return NULL;
1015
}
1016

    
1017
unsigned avcodec_version( void )
1018
{
1019
  return LIBAVCODEC_VERSION_INT;
1020
}
1021

    
1022
const char *avcodec_configuration(void)
1023
{
1024
    return LIBAV_CONFIGURATION;
1025
}
1026

    
1027
const char *avcodec_license(void)
1028
{
1029
#define LICENSE_PREFIX "libavcodec license: "
1030
    return LICENSE_PREFIX LIBAV_LICENSE + sizeof(LICENSE_PREFIX) - 1;
1031
}
1032

    
1033
void avcodec_init(void)
1034
{
1035
    static int initialized = 0;
1036

    
1037
    if (initialized != 0)
1038
        return;
1039
    initialized = 1;
1040

    
1041
    dsputil_static_init();
1042
}
1043

    
1044
void avcodec_flush_buffers(AVCodecContext *avctx)
1045
{
1046
    if(HAVE_PTHREADS && avctx->active_thread_type&FF_THREAD_FRAME)
1047
        ff_thread_flush(avctx);
1048
    if(avctx->codec->flush)
1049
        avctx->codec->flush(avctx);
1050
}
1051

    
1052
void avcodec_default_free_buffers(AVCodecContext *s){
1053
    int i, j;
1054

    
1055
    if(s->internal_buffer==NULL) return;
1056

    
1057
    if (s->internal_buffer_count)
1058
        av_log(s, AV_LOG_WARNING, "Found %i unreleased buffers!\n", s->internal_buffer_count);
1059
    for(i=0; i<INTERNAL_BUFFER_SIZE; i++){
1060
        InternalBuffer *buf= &((InternalBuffer*)s->internal_buffer)[i];
1061
        for(j=0; j<4; j++){
1062
            av_freep(&buf->base[j]);
1063
            buf->data[j]= NULL;
1064
        }
1065
    }
1066
    av_freep(&s->internal_buffer);
1067

    
1068
    s->internal_buffer_count=0;
1069
}
1070

    
1071
char av_get_pict_type_char(int pict_type){
1072
    switch(pict_type){
1073
    case FF_I_TYPE: return 'I';
1074
    case FF_P_TYPE: return 'P';
1075
    case FF_B_TYPE: return 'B';
1076
    case FF_S_TYPE: return 'S';
1077
    case FF_SI_TYPE:return 'i';
1078
    case FF_SP_TYPE:return 'p';
1079
    case FF_BI_TYPE:return 'b';
1080
    default:        return '?';
1081
    }
1082
}
1083

    
1084
int av_get_bits_per_sample(enum CodecID codec_id){
1085
    switch(codec_id){
1086
    case CODEC_ID_ADPCM_SBPRO_2:
1087
        return 2;
1088
    case CODEC_ID_ADPCM_SBPRO_3:
1089
        return 3;
1090
    case CODEC_ID_ADPCM_SBPRO_4:
1091
    case CODEC_ID_ADPCM_CT:
1092
    case CODEC_ID_ADPCM_IMA_WAV:
1093
    case CODEC_ID_ADPCM_MS:
1094
    case CODEC_ID_ADPCM_YAMAHA:
1095
        return 4;
1096
    case CODEC_ID_ADPCM_G722:
1097
    case CODEC_ID_PCM_ALAW:
1098
    case CODEC_ID_PCM_MULAW:
1099
    case CODEC_ID_PCM_S8:
1100
    case CODEC_ID_PCM_U8:
1101
    case CODEC_ID_PCM_ZORK:
1102
        return 8;
1103
    case CODEC_ID_PCM_S16BE:
1104
    case CODEC_ID_PCM_S16LE:
1105
    case CODEC_ID_PCM_S16LE_PLANAR:
1106
    case CODEC_ID_PCM_U16BE:
1107
    case CODEC_ID_PCM_U16LE:
1108
        return 16;
1109
    case CODEC_ID_PCM_S24DAUD:
1110
    case CODEC_ID_PCM_S24BE:
1111
    case CODEC_ID_PCM_S24LE:
1112
    case CODEC_ID_PCM_U24BE:
1113
    case CODEC_ID_PCM_U24LE:
1114
        return 24;
1115
    case CODEC_ID_PCM_S32BE:
1116
    case CODEC_ID_PCM_S32LE:
1117
    case CODEC_ID_PCM_U32BE:
1118
    case CODEC_ID_PCM_U32LE:
1119
    case CODEC_ID_PCM_F32BE:
1120
    case CODEC_ID_PCM_F32LE:
1121
        return 32;
1122
    case CODEC_ID_PCM_F64BE:
1123
    case CODEC_ID_PCM_F64LE:
1124
        return 64;
1125
    default:
1126
        return 0;
1127
    }
1128
}
1129

    
1130
#if FF_API_OLD_SAMPLE_FMT
1131
int av_get_bits_per_sample_format(enum AVSampleFormat sample_fmt) {
1132
    return av_get_bits_per_sample_fmt(sample_fmt);
1133
}
1134
#endif
1135

    
1136
#if !HAVE_THREADS
1137
int ff_thread_init(AVCodecContext *s){
1138
    return -1;
1139
}
1140
#endif
1141

    
1142
unsigned int av_xiphlacing(unsigned char *s, unsigned int v)
1143
{
1144
    unsigned int n = 0;
1145

    
1146
    while(v >= 0xff) {
1147
        *s++ = 0xff;
1148
        v -= 0xff;
1149
        n++;
1150
    }
1151
    *s = v;
1152
    n++;
1153
    return n;
1154
}
1155

    
1156
#if LIBAVCODEC_VERSION_MAJOR < 53
1157
#include "libavutil/parseutils.h"
1158

    
1159
int av_parse_video_frame_size(int *width_ptr, int *height_ptr, const char *str)
1160
{
1161
    return av_parse_video_size(width_ptr, height_ptr, str);
1162
}
1163

    
1164
int av_parse_video_frame_rate(AVRational *frame_rate, const char *arg)
1165
{
1166
    return av_parse_video_rate(frame_rate, arg);
1167
}
1168
#endif
1169

    
1170
int ff_match_2uint16(const uint16_t (*tab)[2], int size, int a, int b){
1171
    int i;
1172
    for(i=0; i<size && !(tab[i][0]==a && tab[i][1]==b); i++);
1173
    return i;
1174
}
1175

    
1176
void av_log_missing_feature(void *avc, const char *feature, int want_sample)
1177
{
1178
    av_log(avc, AV_LOG_WARNING, "%s not implemented. Update your Libav "
1179
            "version to the newest one from Git. If the problem still "
1180
            "occurs, it means that your file has a feature which has not "
1181
            "been implemented.", feature);
1182
    if(want_sample)
1183
        av_log_ask_for_sample(avc, NULL);
1184
    else
1185
        av_log(avc, AV_LOG_WARNING, "\n");
1186
}
1187

    
1188
void av_log_ask_for_sample(void *avc, const char *msg)
1189
{
1190
    if (msg)
1191
        av_log(avc, AV_LOG_WARNING, "%s ", msg);
1192
    av_log(avc, AV_LOG_WARNING, "If you want to help, upload a sample "
1193
            "of this file to ftp://upload.libav.org/incoming/ "
1194
            "and contact the libav-devel mailing list.\n");
1195
}
1196

    
1197
static AVHWAccel *first_hwaccel = NULL;
1198

    
1199
void av_register_hwaccel(AVHWAccel *hwaccel)
1200
{
1201
    AVHWAccel **p = &first_hwaccel;
1202
    while (*p)
1203
        p = &(*p)->next;
1204
    *p = hwaccel;
1205
    hwaccel->next = NULL;
1206
}
1207

    
1208
AVHWAccel *av_hwaccel_next(AVHWAccel *hwaccel)
1209
{
1210
    return hwaccel ? hwaccel->next : first_hwaccel;
1211
}
1212

    
1213
AVHWAccel *ff_find_hwaccel(enum CodecID codec_id, enum PixelFormat pix_fmt)
1214
{
1215
    AVHWAccel *hwaccel=NULL;
1216

    
1217
    while((hwaccel= av_hwaccel_next(hwaccel))){
1218
        if (   hwaccel->id      == codec_id
1219
            && hwaccel->pix_fmt == pix_fmt)
1220
            return hwaccel;
1221
    }
1222
    return NULL;
1223
}
1224

    
1225
int av_lockmgr_register(int (*cb)(void **mutex, enum AVLockOp op))
1226
{
1227
    if (ff_lockmgr_cb) {
1228
        if (ff_lockmgr_cb(&codec_mutex, AV_LOCK_DESTROY))
1229
            return -1;
1230
    }
1231

    
1232
    ff_lockmgr_cb = cb;
1233

    
1234
    if (ff_lockmgr_cb) {
1235
        if (ff_lockmgr_cb(&codec_mutex, AV_LOCK_CREATE))
1236
            return -1;
1237
    }
1238
    return 0;
1239
}
1240

    
1241
unsigned int ff_toupper4(unsigned int x)
1242
{
1243
    return     toupper( x     &0xFF)
1244
            + (toupper((x>>8 )&0xFF)<<8 )
1245
            + (toupper((x>>16)&0xFF)<<16)
1246
            + (toupper((x>>24)&0xFF)<<24);
1247
}
1248

    
1249
#if !HAVE_PTHREADS
1250

    
1251
int ff_thread_get_buffer(AVCodecContext *avctx, AVFrame *f)
1252
{
1253
    f->owner = avctx;
1254
    return avctx->get_buffer(avctx, f);
1255
}
1256

    
1257
void ff_thread_release_buffer(AVCodecContext *avctx, AVFrame *f)
1258
{
1259
    f->owner->release_buffer(f->owner, f);
1260
}
1261

    
1262
void ff_thread_finish_setup(AVCodecContext *avctx)
1263
{
1264
}
1265

    
1266
void ff_thread_report_progress(AVFrame *f, int progress, int field)
1267
{
1268
}
1269

    
1270
void ff_thread_await_progress(AVFrame *f, int progress, int field)
1271
{
1272
}
1273

    
1274
#endif
1275

    
1276
#if LIBAVCODEC_VERSION_MAJOR < 53
1277

    
1278
int avcodec_thread_init(AVCodecContext *s, int thread_count)
1279
{
1280
    s->thread_count = thread_count;
1281
    return ff_thread_init(s);
1282
}
1283

    
1284
void avcodec_thread_free(AVCodecContext *s)
1285
{
1286
#if HAVE_THREADS
1287
    ff_thread_free(s);
1288
#endif
1289
}
1290

    
1291
#endif