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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);
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    *p = av_malloc(min_size);
75
    if (!*p) min_size = 0;
76
    *size= min_size;
77
}
78

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

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

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

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

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

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

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

    
125
#define INTERNAL_BUFFER_SIZE 32
126

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

    
359
    return 0;
360
}
361

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

    
465
    avcodec_get_frame_defaults(pic);
466

    
467
    return pic;
468
}
469

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

    
660
    avctx->pkt = avpkt;
661

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

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

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

    
679
    return ret;
680
}
681

    
682
#if FF_API_AUDIO_OLD
683
int attribute_align_arg avcodec_decode_audio2(AVCodecContext *avctx, int16_t *samples,
684
                         int *frame_size_ptr,
685
                         const uint8_t *buf, int buf_size)
686
{
687
    AVPacket avpkt;
688
    av_init_packet(&avpkt);
689
    avpkt.data = buf;
690
    avpkt.size = buf_size;
691

    
692
    return avcodec_decode_audio3(avctx, samples, frame_size_ptr, &avpkt);
693
}
694
#endif
695

    
696
int attribute_align_arg avcodec_decode_audio3(AVCodecContext *avctx, int16_t *samples,
697
                         int *frame_size_ptr,
698
                         AVPacket *avpkt)
699
{
700
    int ret;
701

    
702
    avctx->pkt = avpkt;
703

    
704
    if((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size){
705
        //FIXME remove the check below _after_ ensuring that all audio check that the available space is enough
706
        if(*frame_size_ptr < AVCODEC_MAX_AUDIO_FRAME_SIZE){
707
            av_log(avctx, AV_LOG_ERROR, "buffer smaller than AVCODEC_MAX_AUDIO_FRAME_SIZE\n");
708
            return -1;
709
        }
710
        if(*frame_size_ptr < FF_MIN_BUFFER_SIZE ||
711
        *frame_size_ptr < avctx->channels * avctx->frame_size * sizeof(int16_t)){
712
            av_log(avctx, AV_LOG_ERROR, "buffer %d too small\n", *frame_size_ptr);
713
            return -1;
714
        }
715

    
716
        ret = avctx->codec->decode(avctx, samples, frame_size_ptr, avpkt);
717
        avctx->frame_number++;
718
    }else{
719
        ret= 0;
720
        *frame_size_ptr=0;
721
    }
722
    return ret;
723
}
724

    
725
#if FF_API_SUBTITLE_OLD
726
int avcodec_decode_subtitle(AVCodecContext *avctx, AVSubtitle *sub,
727
                            int *got_sub_ptr,
728
                            const uint8_t *buf, int buf_size)
729
{
730
    AVPacket avpkt;
731
    av_init_packet(&avpkt);
732
    avpkt.data = buf;
733
    avpkt.size = buf_size;
734

    
735
    return avcodec_decode_subtitle2(avctx, sub, got_sub_ptr, &avpkt);
736
}
737
#endif
738

    
739
int avcodec_decode_subtitle2(AVCodecContext *avctx, AVSubtitle *sub,
740
                            int *got_sub_ptr,
741
                            AVPacket *avpkt)
742
{
743
    int ret;
744

    
745
    avctx->pkt = avpkt;
746
    *got_sub_ptr = 0;
747
    ret = avctx->codec->decode(avctx, sub, got_sub_ptr, avpkt);
748
    if (*got_sub_ptr)
749
        avctx->frame_number++;
750
    return ret;
751
}
752

    
753
void avsubtitle_free(AVSubtitle *sub)
754
{
755
    int i;
756

    
757
    for (i = 0; i < sub->num_rects; i++)
758
    {
759
        av_freep(&sub->rects[i]->pict.data[0]);
760
        av_freep(&sub->rects[i]->pict.data[1]);
761
        av_freep(&sub->rects[i]->pict.data[2]);
762
        av_freep(&sub->rects[i]->pict.data[3]);
763
        av_freep(&sub->rects[i]->text);
764
        av_freep(&sub->rects[i]->ass);
765
        av_freep(&sub->rects[i]);
766
    }
767

    
768
    av_freep(&sub->rects);
769

    
770
    memset(sub, 0, sizeof(AVSubtitle));
771
}
772

    
773
av_cold int avcodec_close(AVCodecContext *avctx)
774
{
775
    /* If there is a user-supplied mutex locking routine, call it. */
776
    if (ff_lockmgr_cb) {
777
        if ((*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_OBTAIN))
778
            return -1;
779
    }
780

    
781
    entangled_thread_counter++;
782
    if(entangled_thread_counter != 1){
783
        av_log(avctx, AV_LOG_ERROR, "insufficient thread locking around avcodec_open/close()\n");
784
        entangled_thread_counter--;
785
        return -1;
786
    }
787

    
788
    if (HAVE_THREADS && avctx->thread_opaque)
789
        ff_thread_free(avctx);
790
    if (avctx->codec && avctx->codec->close)
791
        avctx->codec->close(avctx);
792
    avcodec_default_free_buffers(avctx);
793
    avctx->coded_frame = NULL;
794
    av_freep(&avctx->priv_data);
795
    if(avctx->codec && avctx->codec->encode)
796
        av_freep(&avctx->extradata);
797
    avctx->codec = NULL;
798
    avctx->active_thread_type = 0;
799
    entangled_thread_counter--;
800

    
801
    /* Release any user-supplied mutex. */
802
    if (ff_lockmgr_cb) {
803
        (*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_RELEASE);
804
    }
805
    return 0;
806
}
807

    
808
AVCodec *avcodec_find_encoder(enum CodecID id)
809
{
810
    AVCodec *p, *experimental=NULL;
811
    p = first_avcodec;
812
    while (p) {
813
        if (p->encode != NULL && p->id == id) {
814
            if (p->capabilities & CODEC_CAP_EXPERIMENTAL && !experimental) {
815
                experimental = p;
816
            } else
817
                return p;
818
        }
819
        p = p->next;
820
    }
821
    return experimental;
822
}
823

    
824
AVCodec *avcodec_find_encoder_by_name(const char *name)
825
{
826
    AVCodec *p;
827
    if (!name)
828
        return NULL;
829
    p = first_avcodec;
830
    while (p) {
831
        if (p->encode != NULL && strcmp(name,p->name) == 0)
832
            return p;
833
        p = p->next;
834
    }
835
    return NULL;
836
}
837

    
838
AVCodec *avcodec_find_decoder(enum CodecID id)
839
{
840
    AVCodec *p;
841
    p = first_avcodec;
842
    while (p) {
843
        if (p->decode != NULL && p->id == id)
844
            return p;
845
        p = p->next;
846
    }
847
    return NULL;
848
}
849

    
850
AVCodec *avcodec_find_decoder_by_name(const char *name)
851
{
852
    AVCodec *p;
853
    if (!name)
854
        return NULL;
855
    p = first_avcodec;
856
    while (p) {
857
        if (p->decode != NULL && strcmp(name,p->name) == 0)
858
            return p;
859
        p = p->next;
860
    }
861
    return NULL;
862
}
863

    
864
static int get_bit_rate(AVCodecContext *ctx)
865
{
866
    int bit_rate;
867
    int bits_per_sample;
868

    
869
    switch(ctx->codec_type) {
870
    case AVMEDIA_TYPE_VIDEO:
871
    case AVMEDIA_TYPE_DATA:
872
    case AVMEDIA_TYPE_SUBTITLE:
873
    case AVMEDIA_TYPE_ATTACHMENT:
874
        bit_rate = ctx->bit_rate;
875
        break;
876
    case AVMEDIA_TYPE_AUDIO:
877
        bits_per_sample = av_get_bits_per_sample(ctx->codec_id);
878
        bit_rate = bits_per_sample ? ctx->sample_rate * ctx->channels * bits_per_sample : ctx->bit_rate;
879
        break;
880
    default:
881
        bit_rate = 0;
882
        break;
883
    }
884
    return bit_rate;
885
}
886

    
887
size_t av_get_codec_tag_string(char *buf, size_t buf_size, unsigned int codec_tag)
888
{
889
    int i, len, ret = 0;
890

    
891
    for (i = 0; i < 4; i++) {
892
        len = snprintf(buf, buf_size,
893
                       isprint(codec_tag&0xFF) ? "%c" : "[%d]", codec_tag&0xFF);
894
        buf      += len;
895
        buf_size  = buf_size > len ? buf_size - len : 0;
896
        ret      += len;
897
        codec_tag>>=8;
898
    }
899
    return ret;
900
}
901

    
902
void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)
903
{
904
    const char *codec_name;
905
    const char *profile = NULL;
906
    AVCodec *p;
907
    char buf1[32];
908
    int bitrate;
909
    AVRational display_aspect_ratio;
910

    
911
    if (encode)
912
        p = avcodec_find_encoder(enc->codec_id);
913
    else
914
        p = avcodec_find_decoder(enc->codec_id);
915

    
916
    if (p) {
917
        codec_name = p->name;
918
        profile = av_get_profile_name(p, enc->profile);
919
    } else if (enc->codec_id == CODEC_ID_MPEG2TS) {
920
        /* fake mpeg2 transport stream codec (currently not
921
           registered) */
922
        codec_name = "mpeg2ts";
923
    } else if (enc->codec_name[0] != '\0') {
924
        codec_name = enc->codec_name;
925
    } else {
926
        /* output avi tags */
927
        char tag_buf[32];
928
        av_get_codec_tag_string(tag_buf, sizeof(tag_buf), enc->codec_tag);
929
        snprintf(buf1, sizeof(buf1), "%s / 0x%04X", tag_buf, enc->codec_tag);
930
        codec_name = buf1;
931
    }
932

    
933
    switch(enc->codec_type) {
934
    case AVMEDIA_TYPE_VIDEO:
935
        snprintf(buf, buf_size,
936
                 "Video: %s%s",
937
                 codec_name, enc->mb_decision ? " (hq)" : "");
938
        if (profile)
939
            snprintf(buf + strlen(buf), buf_size - strlen(buf),
940
                     " (%s)", profile);
941
        if (enc->pix_fmt != PIX_FMT_NONE) {
942
            snprintf(buf + strlen(buf), buf_size - strlen(buf),
943
                     ", %s",
944
                     avcodec_get_pix_fmt_name(enc->pix_fmt));
945
        }
946
        if (enc->width) {
947
            snprintf(buf + strlen(buf), buf_size - strlen(buf),
948
                     ", %dx%d",
949
                     enc->width, enc->height);
950
            if (enc->sample_aspect_ratio.num) {
951
                av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
952
                          enc->width*enc->sample_aspect_ratio.num,
953
                          enc->height*enc->sample_aspect_ratio.den,
954
                          1024*1024);
955
                snprintf(buf + strlen(buf), buf_size - strlen(buf),
956
                         " [PAR %d:%d DAR %d:%d]",
957
                         enc->sample_aspect_ratio.num, enc->sample_aspect_ratio.den,
958
                         display_aspect_ratio.num, display_aspect_ratio.den);
959
            }
960
            if(av_log_get_level() >= AV_LOG_DEBUG){
961
                int g= av_gcd(enc->time_base.num, enc->time_base.den);
962
                snprintf(buf + strlen(buf), buf_size - strlen(buf),
963
                     ", %d/%d",
964
                     enc->time_base.num/g, enc->time_base.den/g);
965
            }
966
        }
967
        if (encode) {
968
            snprintf(buf + strlen(buf), buf_size - strlen(buf),
969
                     ", q=%d-%d", enc->qmin, enc->qmax);
970
        }
971
        break;
972
    case AVMEDIA_TYPE_AUDIO:
973
        snprintf(buf, buf_size,
974
                 "Audio: %s",
975
                 codec_name);
976
        if (profile)
977
            snprintf(buf + strlen(buf), buf_size - strlen(buf),
978
                     " (%s)", profile);
979
        if (enc->sample_rate) {
980
            snprintf(buf + strlen(buf), buf_size - strlen(buf),
981
                     ", %d Hz", enc->sample_rate);
982
        }
983
        av_strlcat(buf, ", ", buf_size);
984
        av_get_channel_layout_string(buf + strlen(buf), buf_size - strlen(buf), enc->channels, enc->channel_layout);
985
        if (enc->sample_fmt != AV_SAMPLE_FMT_NONE) {
986
            snprintf(buf + strlen(buf), buf_size - strlen(buf),
987
                     ", %s", av_get_sample_fmt_name(enc->sample_fmt));
988
        }
989
        break;
990
    case AVMEDIA_TYPE_DATA:
991
        snprintf(buf, buf_size, "Data: %s", codec_name);
992
        break;
993
    case AVMEDIA_TYPE_SUBTITLE:
994
        snprintf(buf, buf_size, "Subtitle: %s", codec_name);
995
        break;
996
    case AVMEDIA_TYPE_ATTACHMENT:
997
        snprintf(buf, buf_size, "Attachment: %s", codec_name);
998
        break;
999
    default:
1000
        snprintf(buf, buf_size, "Invalid Codec type %d", enc->codec_type);
1001
        return;
1002
    }
1003
    if (encode) {
1004
        if (enc->flags & CODEC_FLAG_PASS1)
1005
            snprintf(buf + strlen(buf), buf_size - strlen(buf),
1006
                     ", pass 1");
1007
        if (enc->flags & CODEC_FLAG_PASS2)
1008
            snprintf(buf + strlen(buf), buf_size - strlen(buf),
1009
                     ", pass 2");
1010
    }
1011
    bitrate = get_bit_rate(enc);
1012
    if (bitrate != 0) {
1013
        snprintf(buf + strlen(buf), buf_size - strlen(buf),
1014
                 ", %d kb/s", bitrate / 1000);
1015
    }
1016
}
1017

    
1018
const char *av_get_profile_name(const AVCodec *codec, int profile)
1019
{
1020
    const AVProfile *p;
1021
    if (profile == FF_PROFILE_UNKNOWN || !codec->profiles)
1022
        return NULL;
1023

    
1024
    for (p = codec->profiles; p->profile != FF_PROFILE_UNKNOWN; p++)
1025
        if (p->profile == profile)
1026
            return p->name;
1027

    
1028
    return NULL;
1029
}
1030

    
1031
unsigned avcodec_version( void )
1032
{
1033
  return LIBAVCODEC_VERSION_INT;
1034
}
1035

    
1036
const char *avcodec_configuration(void)
1037
{
1038
    return LIBAV_CONFIGURATION;
1039
}
1040

    
1041
const char *avcodec_license(void)
1042
{
1043
#define LICENSE_PREFIX "libavcodec license: "
1044
    return LICENSE_PREFIX LIBAV_LICENSE + sizeof(LICENSE_PREFIX) - 1;
1045
}
1046

    
1047
void avcodec_init(void)
1048
{
1049
    static int initialized = 0;
1050

    
1051
    if (initialized != 0)
1052
        return;
1053
    initialized = 1;
1054

    
1055
    dsputil_static_init();
1056
}
1057

    
1058
void avcodec_flush_buffers(AVCodecContext *avctx)
1059
{
1060
    if(HAVE_PTHREADS && avctx->active_thread_type&FF_THREAD_FRAME)
1061
        ff_thread_flush(avctx);
1062
    if(avctx->codec->flush)
1063
        avctx->codec->flush(avctx);
1064
}
1065

    
1066
void avcodec_default_free_buffers(AVCodecContext *s){
1067
    int i, j;
1068

    
1069
    if(s->internal_buffer==NULL) return;
1070

    
1071
    if (s->internal_buffer_count)
1072
        av_log(s, AV_LOG_WARNING, "Found %i unreleased buffers!\n", s->internal_buffer_count);
1073
    for(i=0; i<INTERNAL_BUFFER_SIZE; i++){
1074
        InternalBuffer *buf= &((InternalBuffer*)s->internal_buffer)[i];
1075
        for(j=0; j<4; j++){
1076
            av_freep(&buf->base[j]);
1077
            buf->data[j]= NULL;
1078
        }
1079
    }
1080
    av_freep(&s->internal_buffer);
1081

    
1082
    s->internal_buffer_count=0;
1083
}
1084

    
1085
char av_get_pict_type_char(int pict_type){
1086
    switch(pict_type){
1087
    case FF_I_TYPE: return 'I';
1088
    case FF_P_TYPE: return 'P';
1089
    case FF_B_TYPE: return 'B';
1090
    case FF_S_TYPE: return 'S';
1091
    case FF_SI_TYPE:return 'i';
1092
    case FF_SP_TYPE:return 'p';
1093
    case FF_BI_TYPE:return 'b';
1094
    default:        return '?';
1095
    }
1096
}
1097

    
1098
int av_get_bits_per_sample(enum CodecID codec_id){
1099
    switch(codec_id){
1100
    case CODEC_ID_ADPCM_SBPRO_2:
1101
        return 2;
1102
    case CODEC_ID_ADPCM_SBPRO_3:
1103
        return 3;
1104
    case CODEC_ID_ADPCM_SBPRO_4:
1105
    case CODEC_ID_ADPCM_CT:
1106
    case CODEC_ID_ADPCM_IMA_WAV:
1107
    case CODEC_ID_ADPCM_MS:
1108
    case CODEC_ID_ADPCM_YAMAHA:
1109
        return 4;
1110
    case CODEC_ID_PCM_ALAW:
1111
    case CODEC_ID_PCM_MULAW:
1112
    case CODEC_ID_PCM_S8:
1113
    case CODEC_ID_PCM_U8:
1114
    case CODEC_ID_PCM_ZORK:
1115
        return 8;
1116
    case CODEC_ID_PCM_S16BE:
1117
    case CODEC_ID_PCM_S16LE:
1118
    case CODEC_ID_PCM_S16LE_PLANAR:
1119
    case CODEC_ID_PCM_U16BE:
1120
    case CODEC_ID_PCM_U16LE:
1121
        return 16;
1122
    case CODEC_ID_PCM_S24DAUD:
1123
    case CODEC_ID_PCM_S24BE:
1124
    case CODEC_ID_PCM_S24LE:
1125
    case CODEC_ID_PCM_U24BE:
1126
    case CODEC_ID_PCM_U24LE:
1127
        return 24;
1128
    case CODEC_ID_PCM_S32BE:
1129
    case CODEC_ID_PCM_S32LE:
1130
    case CODEC_ID_PCM_U32BE:
1131
    case CODEC_ID_PCM_U32LE:
1132
    case CODEC_ID_PCM_F32BE:
1133
    case CODEC_ID_PCM_F32LE:
1134
        return 32;
1135
    case CODEC_ID_PCM_F64BE:
1136
    case CODEC_ID_PCM_F64LE:
1137
        return 64;
1138
    default:
1139
        return 0;
1140
    }
1141
}
1142

    
1143
#if FF_API_OLD_SAMPLE_FMT
1144
int av_get_bits_per_sample_format(enum AVSampleFormat sample_fmt) {
1145
    return av_get_bits_per_sample_fmt(sample_fmt);
1146
}
1147
#endif
1148

    
1149
#if !HAVE_THREADS
1150
int ff_thread_init(AVCodecContext *s, int thread_count){
1151
    s->thread_count = thread_count;
1152
    return -1;
1153
}
1154
#endif
1155

    
1156
unsigned int av_xiphlacing(unsigned char *s, unsigned int v)
1157
{
1158
    unsigned int n = 0;
1159

    
1160
    while(v >= 0xff) {
1161
        *s++ = 0xff;
1162
        v -= 0xff;
1163
        n++;
1164
    }
1165
    *s = v;
1166
    n++;
1167
    return n;
1168
}
1169

    
1170
#if LIBAVCODEC_VERSION_MAJOR < 53
1171
#include "libavutil/parseutils.h"
1172

    
1173
int av_parse_video_frame_size(int *width_ptr, int *height_ptr, const char *str)
1174
{
1175
    return av_parse_video_size(width_ptr, height_ptr, str);
1176
}
1177

    
1178
int av_parse_video_frame_rate(AVRational *frame_rate, const char *arg)
1179
{
1180
    return av_parse_video_rate(frame_rate, arg);
1181
}
1182
#endif
1183

    
1184
int ff_match_2uint16(const uint16_t (*tab)[2], int size, int a, int b){
1185
    int i;
1186
    for(i=0; i<size && !(tab[i][0]==a && tab[i][1]==b); i++);
1187
    return i;
1188
}
1189

    
1190
void av_log_missing_feature(void *avc, const char *feature, int want_sample)
1191
{
1192
    av_log(avc, AV_LOG_WARNING, "%s not implemented. Update your FFmpeg "
1193
            "version to the newest one from Git. If the problem still "
1194
            "occurs, it means that your file has a feature which has not "
1195
            "been implemented.", feature);
1196
    if(want_sample)
1197
        av_log_ask_for_sample(avc, NULL);
1198
    else
1199
        av_log(avc, AV_LOG_WARNING, "\n");
1200
}
1201

    
1202
void av_log_ask_for_sample(void *avc, const char *msg)
1203
{
1204
    if (msg)
1205
        av_log(avc, AV_LOG_WARNING, "%s ", msg);
1206
    av_log(avc, AV_LOG_WARNING, "If you want to help, upload a sample "
1207
            "of this file to ftp://upload.libav.org/MPlayer/incoming/ "
1208
            "and contact the libav-devel mailing list.\n");
1209
}
1210

    
1211
static AVHWAccel *first_hwaccel = NULL;
1212

    
1213
void av_register_hwaccel(AVHWAccel *hwaccel)
1214
{
1215
    AVHWAccel **p = &first_hwaccel;
1216
    while (*p)
1217
        p = &(*p)->next;
1218
    *p = hwaccel;
1219
    hwaccel->next = NULL;
1220
}
1221

    
1222
AVHWAccel *av_hwaccel_next(AVHWAccel *hwaccel)
1223
{
1224
    return hwaccel ? hwaccel->next : first_hwaccel;
1225
}
1226

    
1227
AVHWAccel *ff_find_hwaccel(enum CodecID codec_id, enum PixelFormat pix_fmt)
1228
{
1229
    AVHWAccel *hwaccel=NULL;
1230

    
1231
    while((hwaccel= av_hwaccel_next(hwaccel))){
1232
        if (   hwaccel->id      == codec_id
1233
            && hwaccel->pix_fmt == pix_fmt)
1234
            return hwaccel;
1235
    }
1236
    return NULL;
1237
}
1238

    
1239
int av_lockmgr_register(int (*cb)(void **mutex, enum AVLockOp op))
1240
{
1241
    if (ff_lockmgr_cb) {
1242
        if (ff_lockmgr_cb(&codec_mutex, AV_LOCK_DESTROY))
1243
            return -1;
1244
    }
1245

    
1246
    ff_lockmgr_cb = cb;
1247

    
1248
    if (ff_lockmgr_cb) {
1249
        if (ff_lockmgr_cb(&codec_mutex, AV_LOCK_CREATE))
1250
            return -1;
1251
    }
1252
    return 0;
1253
}
1254

    
1255
unsigned int ff_toupper4(unsigned int x)
1256
{
1257
    return     toupper( x     &0xFF)
1258
            + (toupper((x>>8 )&0xFF)<<8 )
1259
            + (toupper((x>>16)&0xFF)<<16)
1260
            + (toupper((x>>24)&0xFF)<<24);
1261
}
1262

    
1263
#if !HAVE_PTHREADS
1264

    
1265
int ff_thread_get_buffer(AVCodecContext *avctx, AVFrame *f)
1266
{
1267
    f->owner = avctx;
1268
    return avctx->get_buffer(avctx, f);
1269
}
1270

    
1271
void ff_thread_release_buffer(AVCodecContext *avctx, AVFrame *f)
1272
{
1273
    f->owner->release_buffer(f->owner, f);
1274
}
1275

    
1276
void ff_thread_finish_setup(AVCodecContext *avctx)
1277
{
1278
}
1279

    
1280
void ff_thread_report_progress(AVFrame *f, int progress, int field)
1281
{
1282
}
1283

    
1284
void ff_thread_await_progress(AVFrame *f, int progress, int field)
1285
{
1286
}
1287

    
1288
#endif
1289

    
1290
#if LIBAVCODEC_VERSION_MAJOR < 53
1291

    
1292
int avcodec_thread_init(AVCodecContext *s, int thread_count)
1293
{
1294
    return ff_thread_init(s, thread_count);
1295
}
1296

    
1297
void avcodec_thread_free(AVCodecContext *s)
1298
{
1299
#if HAVE_THREADS
1300
    ff_thread_free(s);
1301
#endif
1302
}
1303

    
1304
#endif