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ffmpeg / libavcodec / utils.c @ d375c104

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1
/*
2
 * utils for libavcodec
3
 * Copyright (c) 2001 Fabrice Bellard
4
 * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
5
 *
6
 * This file is part of FFmpeg.
7
 *
8
 * FFmpeg is free software; you can redistribute it and/or
9
 * modify it under the terms of the GNU Lesser General Public
10
 * License as published by the Free Software Foundation; either
11
 * version 2.1 of the License, or (at your option) any later version.
12
 *
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 * FFmpeg is distributed in the hope that it will be useful,
14
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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 * Lesser General Public License for more details.
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 *
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 * You should have received a copy of the GNU Lesser General Public
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 * License along with FFmpeg; if not, write to the Free Software
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 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21
 */
22

    
23
/**
24
 * @file
25
 * utils.
26
 */
27

    
28
#include "libavutil/avstring.h"
29
#include "libavutil/integer.h"
30
#include "libavutil/crc.h"
31
#include "libavutil/pixdesc.h"
32
#include "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, FF_INTERNALC_MEM_TYPE min_size)
52
{
53
    if(min_size < *size)
54
        return ptr;
55

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

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

    
62
    *size= min_size;
63

    
64
    return ptr;
65
}
66

    
67
void av_fast_malloc(void *ptr, unsigned int *size, FF_INTERNALC_MEM_TYPE min_size)
68
{
69
    void **p = ptr;
70
    if (min_size < *size)
71
        return;
72
    min_size= FFMAX(17*min_size/16 + 32, min_size);
73
    av_free(*p);
74
    *p = av_malloc(min_size);
75
    if (!*p) min_size = 0;
76
    *size= min_size;
77
}
78

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

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

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

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

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

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

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

    
125
#define INTERNAL_BUFFER_SIZE 32
126

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

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

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

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

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

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

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

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

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

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

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

    
263
    if(buf->base[0] && (buf->width != w || buf->height != h || buf->pix_fmt != s->pix_fmt)){
264
        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
    if(s->internal_buffer){
370
    buf = NULL; /* avoids warning */
371
    for(i=0; i<s->internal_buffer_count; i++){ //just 3-5 checks so is not worth to optimize
372
        buf= &((InternalBuffer*)s->internal_buffer)[i];
373
        if(buf->data[0] == pic->data[0])
374
            break;
375
    }
376
    assert(i < s->internal_buffer_count);
377
    s->internal_buffer_count--;
378
    last = &((InternalBuffer*)s->internal_buffer)[s->internal_buffer_count];
379

    
380
    FFSWAP(InternalBuffer, *buf, *last);
381
    }
382

    
383
    for(i=0; i<4; i++){
384
        pic->data[i]=NULL;
385
//        pic->base[i]=NULL;
386
    }
387
//printf("R%X\n", pic->opaque);
388

    
389
    if(s->debug&FF_DEBUG_BUFFERS)
390
        av_log(s, AV_LOG_DEBUG, "default_release_buffer called on pic %p, %d buffers used\n", pic, s->internal_buffer_count);
391
}
392

    
393
int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic){
394
    AVFrame temp_pic;
395
    int i;
396

    
397
    /* If no picture return a new buffer */
398
    if(pic->data[0] == NULL) {
399
        /* We will copy from buffer, so must be readable */
400
        pic->buffer_hints |= FF_BUFFER_HINTS_READABLE;
401
        return s->get_buffer(s, pic);
402
    }
403

    
404
    /* If internal buffer type return the same buffer */
405
    if(pic->type == FF_BUFFER_TYPE_INTERNAL) {
406
        if(s->pkt) pic->pkt_pts= s->pkt->pts;
407
        else       pic->pkt_pts= AV_NOPTS_VALUE;
408
        pic->reordered_opaque= s->reordered_opaque;
409
        return 0;
410
    }
411

    
412
    /*
413
     * Not internal type and reget_buffer not overridden, emulate cr buffer
414
     */
415
    temp_pic = *pic;
416
    for(i = 0; i < 4; i++)
417
        pic->data[i] = pic->base[i] = NULL;
418
    pic->opaque = NULL;
419
    /* Allocate new frame */
420
    if (s->get_buffer(s, pic))
421
        return -1;
422
    /* Copy image data from old buffer to new buffer */
423
    av_picture_copy((AVPicture*)pic, (AVPicture*)&temp_pic, s->pix_fmt, s->width,
424
             s->height);
425
    s->release_buffer(s, &temp_pic); // Release old frame
426
    return 0;
427
}
428

    
429
int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2),void *arg, int *ret, int count, int size){
430
    int i;
431

    
432
    for(i=0; i<count; i++){
433
        int r= func(c, (char*)arg + i*size);
434
        if(ret) ret[i]= r;
435
    }
436
    return 0;
437
}
438

    
439
int avcodec_default_execute2(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2, int jobnr, int threadnr),void *arg, int *ret, int count){
440
    int i;
441

    
442
    for(i=0; i<count; i++){
443
        int r= func(c, arg, i, 0);
444
        if(ret) ret[i]= r;
445
    }
446
    return 0;
447
}
448

    
449
enum PixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum PixelFormat *fmt){
450
    while (*fmt != PIX_FMT_NONE && ff_is_hwaccel_pix_fmt(*fmt))
451
        ++fmt;
452
    return fmt[0];
453
}
454

    
455
void avcodec_get_frame_defaults(AVFrame *pic){
456
    memset(pic, 0, sizeof(AVFrame));
457

    
458
    pic->pts = pic->best_effort_timestamp = AV_NOPTS_VALUE;
459
    pic->key_frame= 1;
460
}
461

    
462
AVFrame *avcodec_alloc_frame(void){
463
    AVFrame *pic= av_malloc(sizeof(AVFrame));
464

    
465
    if(pic==NULL) return NULL;
466

    
467
    avcodec_get_frame_defaults(pic);
468

    
469
    return pic;
470
}
471

    
472
int attribute_align_arg avcodec_open(AVCodecContext *avctx, AVCodec *codec)
473
{
474
    int ret= -1;
475

    
476
    /* If there is a user-supplied mutex locking routine, call it. */
477
    if (ff_lockmgr_cb) {
478
        if ((*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_OBTAIN))
479
            return -1;
480
    }
481

    
482
    entangled_thread_counter++;
483
    if(entangled_thread_counter != 1){
484
        av_log(avctx, AV_LOG_ERROR, "insufficient thread locking around avcodec_open/close()\n");
485
        goto end;
486
    }
487

    
488
    if(avctx->codec || !codec)
489
        goto end;
490

    
491
    if (codec->priv_data_size > 0) {
492
      if(!avctx->priv_data){
493
        avctx->priv_data = av_mallocz(codec->priv_data_size);
494
        if (!avctx->priv_data) {
495
            ret = AVERROR(ENOMEM);
496
            goto end;
497
        }
498
        if(codec->priv_class){ //this can be droped once all user apps use   avcodec_get_context_defaults3()
499
            *(AVClass**)avctx->priv_data= codec->priv_class;
500
            av_opt_set_defaults(avctx->priv_data);
501
        }
502
      }
503
    } else {
504
        avctx->priv_data = NULL;
505
    }
506

    
507
    if(avctx->coded_width && avctx->coded_height)
508
        avcodec_set_dimensions(avctx, avctx->coded_width, avctx->coded_height);
509
    else if(avctx->width && avctx->height)
510
        avcodec_set_dimensions(avctx, avctx->width, avctx->height);
511

    
512
    if ((avctx->coded_width || avctx->coded_height || avctx->width || avctx->height)
513
        && (  av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx) < 0
514
           || av_image_check_size(avctx->width,       avctx->height,       0, avctx) < 0)) {
515
        av_log(avctx, AV_LOG_WARNING, "ignoring invalid width/height values\n");
516
        avcodec_set_dimensions(avctx, 0, 0);
517
    }
518

    
519
    /* if the decoder init function was already called previously,
520
       free the already allocated subtitle_header before overwriting it */
521
    if (codec->decode)
522
        av_freep(&avctx->subtitle_header);
523

    
524
#define SANE_NB_CHANNELS 128U
525
    if (avctx->channels > SANE_NB_CHANNELS) {
526
        ret = AVERROR(EINVAL);
527
        goto free_and_end;
528
    }
529

    
530
    avctx->codec = codec;
531
    if ((avctx->codec_type == AVMEDIA_TYPE_UNKNOWN || avctx->codec_type == codec->type) &&
532
        avctx->codec_id == CODEC_ID_NONE) {
533
        avctx->codec_type = codec->type;
534
        avctx->codec_id   = codec->id;
535
    }
536
    if (avctx->codec_id != codec->id || (avctx->codec_type != codec->type
537
                           && avctx->codec_type != AVMEDIA_TYPE_ATTACHMENT)) {
538
        av_log(avctx, AV_LOG_ERROR, "codec type or id mismatches\n");
539
        goto free_and_end;
540
    }
541
    avctx->frame_number = 0;
542

    
543
    if (HAVE_THREADS && !avctx->thread_opaque) {
544
        ret = ff_thread_init(avctx, avctx->thread_count);
545
        if (ret < 0) {
546
            goto free_and_end;
547
        }
548
    }
549

    
550
    if (avctx->codec->max_lowres < avctx->lowres) {
551
        av_log(avctx, AV_LOG_ERROR, "The maximum value for lowres supported by the decoder is %d\n",
552
               avctx->codec->max_lowres);
553
        goto free_and_end;
554
    }
555
    if (avctx->codec->sample_fmts && avctx->codec->encode) {
556
        int i;
557
        for (i = 0; avctx->codec->sample_fmts[i] != AV_SAMPLE_FMT_NONE; i++)
558
            if (avctx->sample_fmt == avctx->codec->sample_fmts[i])
559
                break;
560
        if (avctx->codec->sample_fmts[i] == AV_SAMPLE_FMT_NONE) {
561
            av_log(avctx, AV_LOG_ERROR, "Specified sample_fmt is not supported.\n");
562
            goto free_and_end;
563
        }
564
    }
565

    
566
    avctx->pts_correction_num_faulty_pts =
567
    avctx->pts_correction_num_faulty_dts = 0;
568
    avctx->pts_correction_last_pts =
569
    avctx->pts_correction_last_dts = INT64_MIN;
570

    
571
    if(avctx->codec->init && !(avctx->active_thread_type&FF_THREAD_FRAME)){
572
        ret = avctx->codec->init(avctx);
573
        if (ret < 0) {
574
            goto free_and_end;
575
        }
576
    }
577

    
578
    ret=0;
579
end:
580
    entangled_thread_counter--;
581

    
582
    /* Release any user-supplied mutex. */
583
    if (ff_lockmgr_cb) {
584
        (*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_RELEASE);
585
    }
586
    return ret;
587
free_and_end:
588
    av_freep(&avctx->priv_data);
589
    avctx->codec= NULL;
590
    goto end;
591
}
592

    
593
int attribute_align_arg avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size,
594
                         const short *samples)
595
{
596
    if(buf_size < FF_MIN_BUFFER_SIZE && 0){
597
        av_log(avctx, AV_LOG_ERROR, "buffer smaller than minimum size\n");
598
        return -1;
599
    }
600
    if((avctx->codec->capabilities & CODEC_CAP_DELAY) || samples){
601
        int ret = avctx->codec->encode(avctx, buf, buf_size, samples);
602
        avctx->frame_number++;
603
        return ret;
604
    }else
605
        return 0;
606
}
607

    
608
int attribute_align_arg avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
609
                         const AVFrame *pict)
610
{
611
    if(buf_size < FF_MIN_BUFFER_SIZE){
612
        av_log(avctx, AV_LOG_ERROR, "buffer smaller than minimum size\n");
613
        return -1;
614
    }
615
    if(av_image_check_size(avctx->width, avctx->height, 0, avctx))
616
        return -1;
617
    if((avctx->codec->capabilities & CODEC_CAP_DELAY) || pict){
618
        int ret = avctx->codec->encode(avctx, buf, buf_size, pict);
619
        avctx->frame_number++;
620
        emms_c(); //needed to avoid an emms_c() call before every return;
621

    
622
        return ret;
623
    }else
624
        return 0;
625
}
626

    
627
int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size,
628
                            const AVSubtitle *sub)
629
{
630
    int ret;
631
    if(sub->start_display_time) {
632
        av_log(avctx, AV_LOG_ERROR, "start_display_time must be 0.\n");
633
        return -1;
634
    }
635
    if(sub->num_rects == 0 || !sub->rects)
636
        return -1;
637
    ret = avctx->codec->encode(avctx, buf, buf_size, sub);
638
    avctx->frame_number++;
639
    return ret;
640
}
641

    
642
/**
643
 * Attempt to guess proper monotonic timestamps for decoded video frames
644
 * which might have incorrect times. Input timestamps may wrap around, in
645
 * which case the output will as well.
646
 *
647
 * @param pts the pts field of the decoded AVPacket, as passed through
648
 * AVFrame.pkt_pts
649
 * @param dts the dts field of the decoded AVPacket
650
 * @return one of the input values, may be AV_NOPTS_VALUE
651
 */
652
static int64_t guess_correct_pts(AVCodecContext *ctx,
653
                                 int64_t reordered_pts, int64_t dts)
654
{
655
    int64_t pts = AV_NOPTS_VALUE;
656

    
657
    if (dts != AV_NOPTS_VALUE) {
658
        ctx->pts_correction_num_faulty_dts += dts <= ctx->pts_correction_last_dts;
659
        ctx->pts_correction_last_dts = dts;
660
    }
661
    if (reordered_pts != AV_NOPTS_VALUE) {
662
        ctx->pts_correction_num_faulty_pts += reordered_pts <= ctx->pts_correction_last_pts;
663
        ctx->pts_correction_last_pts = reordered_pts;
664
    }
665
    if ((ctx->pts_correction_num_faulty_pts<=ctx->pts_correction_num_faulty_dts || dts == AV_NOPTS_VALUE)
666
       && reordered_pts != AV_NOPTS_VALUE)
667
        pts = reordered_pts;
668
    else
669
        pts = dts;
670

    
671
    return pts;
672
}
673

    
674

    
675
#if FF_API_VIDEO_OLD
676
int attribute_align_arg avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture,
677
                         int *got_picture_ptr,
678
                         const uint8_t *buf, int buf_size)
679
{
680
    AVPacket avpkt;
681
    av_init_packet(&avpkt);
682
    avpkt.data = buf;
683
    avpkt.size = buf_size;
684
    // HACK for CorePNG to decode as normal PNG by default
685
    avpkt.flags = AV_PKT_FLAG_KEY;
686

    
687
    return avcodec_decode_video2(avctx, picture, got_picture_ptr, &avpkt);
688
}
689
#endif
690

    
691
int attribute_align_arg avcodec_decode_video2(AVCodecContext *avctx, AVFrame *picture,
692
                         int *got_picture_ptr,
693
                         AVPacket *avpkt)
694
{
695
    int ret;
696

    
697
    *got_picture_ptr= 0;
698
    if((avctx->coded_width||avctx->coded_height) && av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx))
699
        return -1;
700

    
701
    avctx->pkt = avpkt;
702

    
703
    if((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size || (avctx->active_thread_type&FF_THREAD_FRAME)){
704
        if (HAVE_PTHREADS && avctx->active_thread_type&FF_THREAD_FRAME)
705
             ret = ff_thread_decode_frame(avctx, picture, got_picture_ptr,
706
                                          avpkt);
707
        else {
708
            ret = avctx->codec->decode(avctx, picture, got_picture_ptr,
709
                              avpkt);
710
            picture->pkt_dts= avpkt->dts;
711
        }
712

    
713
        emms_c(); //needed to avoid an emms_c() call before every return;
714

    
715

    
716
        if (*got_picture_ptr){
717
            avctx->frame_number++;
718
            picture->best_effort_timestamp = guess_correct_pts(avctx,
719
                                                            picture->pkt_pts,
720
                                                            picture->pkt_dts);
721
        }
722
    }else
723
        ret= 0;
724

    
725
    return ret;
726
}
727

    
728
#if FF_API_AUDIO_OLD
729
int attribute_align_arg avcodec_decode_audio2(AVCodecContext *avctx, int16_t *samples,
730
                         int *frame_size_ptr,
731
                         const uint8_t *buf, int buf_size)
732
{
733
    AVPacket avpkt;
734
    av_init_packet(&avpkt);
735
    avpkt.data = buf;
736
    avpkt.size = buf_size;
737

    
738
    return avcodec_decode_audio3(avctx, samples, frame_size_ptr, &avpkt);
739
}
740
#endif
741

    
742
int attribute_align_arg avcodec_decode_audio3(AVCodecContext *avctx, int16_t *samples,
743
                         int *frame_size_ptr,
744
                         AVPacket *avpkt)
745
{
746
    int ret;
747

    
748
    avctx->pkt = avpkt;
749

    
750
    if((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size){
751
        //FIXME remove the check below _after_ ensuring that all audio check that the available space is enough
752
        if(*frame_size_ptr < AVCODEC_MAX_AUDIO_FRAME_SIZE){
753
            av_log(avctx, AV_LOG_ERROR, "buffer smaller than AVCODEC_MAX_AUDIO_FRAME_SIZE\n");
754
            return -1;
755
        }
756
        if(*frame_size_ptr < FF_MIN_BUFFER_SIZE ||
757
        *frame_size_ptr < avctx->channels * avctx->frame_size * sizeof(int16_t)){
758
            av_log(avctx, AV_LOG_ERROR, "buffer %d too small\n", *frame_size_ptr);
759
            return -1;
760
        }
761

    
762
        ret = avctx->codec->decode(avctx, samples, frame_size_ptr, avpkt);
763
        avctx->frame_number++;
764
    }else{
765
        ret= 0;
766
        *frame_size_ptr=0;
767
    }
768
    return ret;
769
}
770

    
771
#if FF_API_SUBTITLE_OLD
772
int avcodec_decode_subtitle(AVCodecContext *avctx, AVSubtitle *sub,
773
                            int *got_sub_ptr,
774
                            const uint8_t *buf, int buf_size)
775
{
776
    AVPacket avpkt;
777
    av_init_packet(&avpkt);
778
    avpkt.data = buf;
779
    avpkt.size = buf_size;
780

    
781
    return avcodec_decode_subtitle2(avctx, sub, got_sub_ptr, &avpkt);
782
}
783
#endif
784

    
785
int avcodec_decode_subtitle2(AVCodecContext *avctx, AVSubtitle *sub,
786
                            int *got_sub_ptr,
787
                            AVPacket *avpkt)
788
{
789
    int ret;
790

    
791
    avctx->pkt = avpkt;
792
    *got_sub_ptr = 0;
793
    ret = avctx->codec->decode(avctx, sub, got_sub_ptr, avpkt);
794
    if (*got_sub_ptr)
795
        avctx->frame_number++;
796
    return ret;
797
}
798

    
799
void avsubtitle_free(AVSubtitle *sub)
800
{
801
    int i;
802

    
803
    for (i = 0; i < sub->num_rects; i++)
804
    {
805
        av_freep(&sub->rects[i]->pict.data[0]);
806
        av_freep(&sub->rects[i]->pict.data[1]);
807
        av_freep(&sub->rects[i]->pict.data[2]);
808
        av_freep(&sub->rects[i]->pict.data[3]);
809
        av_freep(&sub->rects[i]->text);
810
        av_freep(&sub->rects[i]->ass);
811
        av_freep(&sub->rects[i]);
812
    }
813

    
814
    av_freep(&sub->rects);
815

    
816
    memset(sub, 0, sizeof(AVSubtitle));
817
}
818

    
819
av_cold int avcodec_close(AVCodecContext *avctx)
820
{
821
    /* If there is a user-supplied mutex locking routine, call it. */
822
    if (ff_lockmgr_cb) {
823
        if ((*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_OBTAIN))
824
            return -1;
825
    }
826

    
827
    entangled_thread_counter++;
828
    if(entangled_thread_counter != 1){
829
        av_log(avctx, AV_LOG_ERROR, "insufficient thread locking around avcodec_open/close()\n");
830
        entangled_thread_counter--;
831
        return -1;
832
    }
833

    
834
    if (HAVE_THREADS && avctx->thread_opaque)
835
        ff_thread_free(avctx);
836
    if (avctx->codec && avctx->codec->close)
837
        avctx->codec->close(avctx);
838
    avcodec_default_free_buffers(avctx);
839
    avctx->coded_frame = NULL;
840
    av_freep(&avctx->priv_data);
841
    if(avctx->codec && avctx->codec->encode)
842
        av_freep(&avctx->extradata);
843
    avctx->codec = NULL;
844
    avctx->active_thread_type = 0;
845
    entangled_thread_counter--;
846

    
847
    /* Release any user-supplied mutex. */
848
    if (ff_lockmgr_cb) {
849
        (*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_RELEASE);
850
    }
851
    return 0;
852
}
853

    
854
AVCodec *avcodec_find_encoder(enum CodecID id)
855
{
856
    AVCodec *p, *experimental=NULL;
857
    p = first_avcodec;
858
    while (p) {
859
        if (p->encode != NULL && p->id == id) {
860
            if (p->capabilities & CODEC_CAP_EXPERIMENTAL && !experimental) {
861
                experimental = p;
862
            } else
863
                return p;
864
        }
865
        p = p->next;
866
    }
867
    return experimental;
868
}
869

    
870
AVCodec *avcodec_find_encoder_by_name(const char *name)
871
{
872
    AVCodec *p;
873
    if (!name)
874
        return NULL;
875
    p = first_avcodec;
876
    while (p) {
877
        if (p->encode != NULL && strcmp(name,p->name) == 0)
878
            return p;
879
        p = p->next;
880
    }
881
    return NULL;
882
}
883

    
884
AVCodec *avcodec_find_decoder(enum CodecID id)
885
{
886
    AVCodec *p;
887
    p = first_avcodec;
888
    while (p) {
889
        if (p->decode != NULL && p->id == id)
890
            return p;
891
        p = p->next;
892
    }
893
    return NULL;
894
}
895

    
896
AVCodec *avcodec_find_decoder_by_name(const char *name)
897
{
898
    AVCodec *p;
899
    if (!name)
900
        return NULL;
901
    p = first_avcodec;
902
    while (p) {
903
        if (p->decode != NULL && strcmp(name,p->name) == 0)
904
            return p;
905
        p = p->next;
906
    }
907
    return NULL;
908
}
909

    
910
static int get_bit_rate(AVCodecContext *ctx)
911
{
912
    int bit_rate;
913
    int bits_per_sample;
914

    
915
    switch(ctx->codec_type) {
916
    case AVMEDIA_TYPE_VIDEO:
917
    case AVMEDIA_TYPE_DATA:
918
    case AVMEDIA_TYPE_SUBTITLE:
919
    case AVMEDIA_TYPE_ATTACHMENT:
920
        bit_rate = ctx->bit_rate;
921
        break;
922
    case AVMEDIA_TYPE_AUDIO:
923
        bits_per_sample = av_get_bits_per_sample(ctx->codec_id);
924
        bit_rate = bits_per_sample ? ctx->sample_rate * ctx->channels * bits_per_sample : ctx->bit_rate;
925
        break;
926
    default:
927
        bit_rate = 0;
928
        break;
929
    }
930
    return bit_rate;
931
}
932

    
933
size_t av_get_codec_tag_string(char *buf, size_t buf_size, unsigned int codec_tag)
934
{
935
    int i, len, ret = 0;
936

    
937
    for (i = 0; i < 4; i++) {
938
        len = snprintf(buf, buf_size,
939
                       isprint(codec_tag&0xFF) ? "%c" : "[%d]", codec_tag&0xFF);
940
        buf      += len;
941
        buf_size  = buf_size > len ? buf_size - len : 0;
942
        ret      += len;
943
        codec_tag>>=8;
944
    }
945
    return ret;
946
}
947

    
948
void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)
949
{
950
    const char *codec_name;
951
    const char *profile = NULL;
952
    AVCodec *p;
953
    char buf1[32];
954
    int bitrate;
955
    AVRational display_aspect_ratio;
956

    
957
    if (encode)
958
        p = avcodec_find_encoder(enc->codec_id);
959
    else
960
        p = avcodec_find_decoder(enc->codec_id);
961

    
962
    if (p) {
963
        codec_name = p->name;
964
        profile = av_get_profile_name(p, enc->profile);
965
    } else if (enc->codec_id == CODEC_ID_MPEG2TS) {
966
        /* fake mpeg2 transport stream codec (currently not
967
           registered) */
968
        codec_name = "mpeg2ts";
969
    } else if (enc->codec_name[0] != '\0') {
970
        codec_name = enc->codec_name;
971
    } else {
972
        /* output avi tags */
973
        char tag_buf[32];
974
        av_get_codec_tag_string(tag_buf, sizeof(tag_buf), enc->codec_tag);
975
        snprintf(buf1, sizeof(buf1), "%s / 0x%04X", tag_buf, enc->codec_tag);
976
        codec_name = buf1;
977
    }
978

    
979
    switch(enc->codec_type) {
980
    case AVMEDIA_TYPE_VIDEO:
981
        snprintf(buf, buf_size,
982
                 "Video: %s%s",
983
                 codec_name, enc->mb_decision ? " (hq)" : "");
984
        if (profile)
985
            snprintf(buf + strlen(buf), buf_size - strlen(buf),
986
                     " (%s)", profile);
987
        if (enc->pix_fmt != PIX_FMT_NONE) {
988
            snprintf(buf + strlen(buf), buf_size - strlen(buf),
989
                     ", %s",
990
                     avcodec_get_pix_fmt_name(enc->pix_fmt));
991
        }
992
        if (enc->width) {
993
            snprintf(buf + strlen(buf), buf_size - strlen(buf),
994
                     ", %dx%d",
995
                     enc->width, enc->height);
996
            if (enc->sample_aspect_ratio.num) {
997
                av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
998
                          enc->width*enc->sample_aspect_ratio.num,
999
                          enc->height*enc->sample_aspect_ratio.den,
1000
                          1024*1024);
1001
                snprintf(buf + strlen(buf), buf_size - strlen(buf),
1002
                         " [PAR %d:%d DAR %d:%d]",
1003
                         enc->sample_aspect_ratio.num, enc->sample_aspect_ratio.den,
1004
                         display_aspect_ratio.num, display_aspect_ratio.den);
1005
            }
1006
            if(av_log_get_level() >= AV_LOG_DEBUG){
1007
                int g= av_gcd(enc->time_base.num, enc->time_base.den);
1008
                snprintf(buf + strlen(buf), buf_size - strlen(buf),
1009
                     ", %d/%d",
1010
                     enc->time_base.num/g, enc->time_base.den/g);
1011
            }
1012
        }
1013
        if (encode) {
1014
            snprintf(buf + strlen(buf), buf_size - strlen(buf),
1015
                     ", q=%d-%d", enc->qmin, enc->qmax);
1016
        }
1017
        break;
1018
    case AVMEDIA_TYPE_AUDIO:
1019
        snprintf(buf, buf_size,
1020
                 "Audio: %s",
1021
                 codec_name);
1022
        if (profile)
1023
            snprintf(buf + strlen(buf), buf_size - strlen(buf),
1024
                     " (%s)", profile);
1025
        if (enc->sample_rate) {
1026
            snprintf(buf + strlen(buf), buf_size - strlen(buf),
1027
                     ", %d Hz", enc->sample_rate);
1028
        }
1029
        av_strlcat(buf, ", ", buf_size);
1030
        av_get_channel_layout_string(buf + strlen(buf), buf_size - strlen(buf), enc->channels, enc->channel_layout);
1031
        if (enc->sample_fmt != AV_SAMPLE_FMT_NONE) {
1032
            snprintf(buf + strlen(buf), buf_size - strlen(buf),
1033
                     ", %s", av_get_sample_fmt_name(enc->sample_fmt));
1034
        }
1035
        break;
1036
    case AVMEDIA_TYPE_DATA:
1037
        snprintf(buf, buf_size, "Data: %s", codec_name);
1038
        break;
1039
    case AVMEDIA_TYPE_SUBTITLE:
1040
        snprintf(buf, buf_size, "Subtitle: %s", codec_name);
1041
        break;
1042
    case AVMEDIA_TYPE_ATTACHMENT:
1043
        snprintf(buf, buf_size, "Attachment: %s", codec_name);
1044
        break;
1045
    default:
1046
        snprintf(buf, buf_size, "Invalid Codec type %d", enc->codec_type);
1047
        return;
1048
    }
1049
    if (encode) {
1050
        if (enc->flags & CODEC_FLAG_PASS1)
1051
            snprintf(buf + strlen(buf), buf_size - strlen(buf),
1052
                     ", pass 1");
1053
        if (enc->flags & CODEC_FLAG_PASS2)
1054
            snprintf(buf + strlen(buf), buf_size - strlen(buf),
1055
                     ", pass 2");
1056
    }
1057
    bitrate = get_bit_rate(enc);
1058
    if (bitrate != 0) {
1059
        snprintf(buf + strlen(buf), buf_size - strlen(buf),
1060
                 ", %d kb/s", bitrate / 1000);
1061
    }
1062
}
1063

    
1064
const char *av_get_profile_name(const AVCodec *codec, int profile)
1065
{
1066
    const AVProfile *p;
1067
    if (profile == FF_PROFILE_UNKNOWN || !codec->profiles)
1068
        return NULL;
1069

    
1070
    for (p = codec->profiles; p->profile != FF_PROFILE_UNKNOWN; p++)
1071
        if (p->profile == profile)
1072
            return p->name;
1073

    
1074
    return NULL;
1075
}
1076

    
1077
unsigned avcodec_version( void )
1078
{
1079
  return LIBAVCODEC_VERSION_INT;
1080
}
1081

    
1082
const char *avcodec_configuration(void)
1083
{
1084
    return FFMPEG_CONFIGURATION;
1085
}
1086

    
1087
const char *avcodec_license(void)
1088
{
1089
#define LICENSE_PREFIX "libavcodec license: "
1090
    return LICENSE_PREFIX FFMPEG_LICENSE + sizeof(LICENSE_PREFIX) - 1;
1091
}
1092

    
1093
void avcodec_init(void)
1094
{
1095
    static int initialized = 0;
1096

    
1097
    if (initialized != 0)
1098
        return;
1099
    initialized = 1;
1100

    
1101
    dsputil_static_init();
1102
}
1103

    
1104
void avcodec_flush_buffers(AVCodecContext *avctx)
1105
{
1106
    if(HAVE_PTHREADS && avctx->active_thread_type&FF_THREAD_FRAME)
1107
        ff_thread_flush(avctx);
1108
    if(avctx->codec->flush)
1109
        avctx->codec->flush(avctx);
1110
}
1111

    
1112
void avcodec_default_free_buffers(AVCodecContext *s){
1113
    int i, j;
1114

    
1115
    if(s->internal_buffer==NULL) return;
1116

    
1117
    if (s->internal_buffer_count)
1118
        av_log(s, AV_LOG_WARNING, "Found %i unreleased buffers!\n", s->internal_buffer_count);
1119
    for(i=0; i<INTERNAL_BUFFER_SIZE; i++){
1120
        InternalBuffer *buf= &((InternalBuffer*)s->internal_buffer)[i];
1121
        for(j=0; j<4; j++){
1122
            av_freep(&buf->base[j]);
1123
            buf->data[j]= NULL;
1124
        }
1125
    }
1126
    av_freep(&s->internal_buffer);
1127

    
1128
    s->internal_buffer_count=0;
1129
}
1130

    
1131
char av_get_pict_type_char(int pict_type){
1132
    switch(pict_type){
1133
    case FF_I_TYPE: return 'I';
1134
    case FF_P_TYPE: return 'P';
1135
    case FF_B_TYPE: return 'B';
1136
    case FF_S_TYPE: return 'S';
1137
    case FF_SI_TYPE:return 'i';
1138
    case FF_SP_TYPE:return 'p';
1139
    case FF_BI_TYPE:return 'b';
1140
    default:        return '?';
1141
    }
1142
}
1143

    
1144
int av_get_bits_per_sample(enum CodecID codec_id){
1145
    switch(codec_id){
1146
    case CODEC_ID_ADPCM_SBPRO_2:
1147
        return 2;
1148
    case CODEC_ID_ADPCM_SBPRO_3:
1149
        return 3;
1150
    case CODEC_ID_ADPCM_SBPRO_4:
1151
    case CODEC_ID_ADPCM_CT:
1152
    case CODEC_ID_ADPCM_IMA_WAV:
1153
    case CODEC_ID_ADPCM_MS:
1154
    case CODEC_ID_ADPCM_YAMAHA:
1155
        return 4;
1156
    case CODEC_ID_PCM_ALAW:
1157
    case CODEC_ID_PCM_MULAW:
1158
    case CODEC_ID_PCM_S8:
1159
    case CODEC_ID_PCM_U8:
1160
    case CODEC_ID_PCM_ZORK:
1161
        return 8;
1162
    case CODEC_ID_PCM_S16BE:
1163
    case CODEC_ID_PCM_S16LE:
1164
    case CODEC_ID_PCM_S16LE_PLANAR:
1165
    case CODEC_ID_PCM_U16BE:
1166
    case CODEC_ID_PCM_U16LE:
1167
        return 16;
1168
    case CODEC_ID_PCM_S24DAUD:
1169
    case CODEC_ID_PCM_S24BE:
1170
    case CODEC_ID_PCM_S24LE:
1171
    case CODEC_ID_PCM_U24BE:
1172
    case CODEC_ID_PCM_U24LE:
1173
        return 24;
1174
    case CODEC_ID_PCM_S32BE:
1175
    case CODEC_ID_PCM_S32LE:
1176
    case CODEC_ID_PCM_U32BE:
1177
    case CODEC_ID_PCM_U32LE:
1178
    case CODEC_ID_PCM_F32BE:
1179
    case CODEC_ID_PCM_F32LE:
1180
        return 32;
1181
    case CODEC_ID_PCM_F64BE:
1182
    case CODEC_ID_PCM_F64LE:
1183
        return 64;
1184
    default:
1185
        return 0;
1186
    }
1187
}
1188

    
1189
#if FF_API_OLD_SAMPLE_FMT
1190
int av_get_bits_per_sample_format(enum AVSampleFormat sample_fmt) {
1191
    return av_get_bits_per_sample_fmt(sample_fmt);
1192
}
1193
#endif
1194

    
1195
#if !HAVE_THREADS
1196
int ff_thread_init(AVCodecContext *s, int thread_count){
1197
    s->thread_count = thread_count;
1198
    return -1;
1199
}
1200
#endif
1201

    
1202
unsigned int av_xiphlacing(unsigned char *s, unsigned int v)
1203
{
1204
    unsigned int n = 0;
1205

    
1206
    while(v >= 0xff) {
1207
        *s++ = 0xff;
1208
        v -= 0xff;
1209
        n++;
1210
    }
1211
    *s = v;
1212
    n++;
1213
    return n;
1214
}
1215

    
1216
#if LIBAVCODEC_VERSION_MAJOR < 53
1217
#include "libavutil/parseutils.h"
1218

    
1219
int av_parse_video_frame_size(int *width_ptr, int *height_ptr, const char *str)
1220
{
1221
    return av_parse_video_size(width_ptr, height_ptr, str);
1222
}
1223

    
1224
int av_parse_video_frame_rate(AVRational *frame_rate, const char *arg)
1225
{
1226
    return av_parse_video_rate(frame_rate, arg);
1227
}
1228
#endif
1229

    
1230
int ff_match_2uint16(const uint16_t (*tab)[2], int size, int a, int b){
1231
    int i;
1232
    for(i=0; i<size && !(tab[i][0]==a && tab[i][1]==b); i++);
1233
    return i;
1234
}
1235

    
1236
void av_log_missing_feature(void *avc, const char *feature, int want_sample)
1237
{
1238
    av_log(avc, AV_LOG_WARNING, "%s not implemented. Update your FFmpeg "
1239
            "version to the newest one from Git. If the problem still "
1240
            "occurs, it means that your file has a feature which has not "
1241
            "been implemented.", feature);
1242
    if(want_sample)
1243
        av_log_ask_for_sample(avc, NULL);
1244
    else
1245
        av_log(avc, AV_LOG_WARNING, "\n");
1246
}
1247

    
1248
void av_log_ask_for_sample(void *avc, const char *msg)
1249
{
1250
    if (msg)
1251
        av_log(avc, AV_LOG_WARNING, "%s ", msg);
1252
    av_log(avc, AV_LOG_WARNING, "If you want to help, upload a sample "
1253
            "of this file to ftp://upload.ffmpeg.org/MPlayer/incoming/ "
1254
            "and contact the ffmpeg-devel mailing list.\n");
1255
}
1256

    
1257
static AVHWAccel *first_hwaccel = NULL;
1258

    
1259
void av_register_hwaccel(AVHWAccel *hwaccel)
1260
{
1261
    AVHWAccel **p = &first_hwaccel;
1262
    while (*p)
1263
        p = &(*p)->next;
1264
    *p = hwaccel;
1265
    hwaccel->next = NULL;
1266
}
1267

    
1268
AVHWAccel *av_hwaccel_next(AVHWAccel *hwaccel)
1269
{
1270
    return hwaccel ? hwaccel->next : first_hwaccel;
1271
}
1272

    
1273
AVHWAccel *ff_find_hwaccel(enum CodecID codec_id, enum PixelFormat pix_fmt)
1274
{
1275
    AVHWAccel *hwaccel=NULL;
1276

    
1277
    while((hwaccel= av_hwaccel_next(hwaccel))){
1278
        if (   hwaccel->id      == codec_id
1279
            && hwaccel->pix_fmt == pix_fmt)
1280
            return hwaccel;
1281
    }
1282
    return NULL;
1283
}
1284

    
1285
int av_lockmgr_register(int (*cb)(void **mutex, enum AVLockOp op))
1286
{
1287
    if (ff_lockmgr_cb) {
1288
        if (ff_lockmgr_cb(&codec_mutex, AV_LOCK_DESTROY))
1289
            return -1;
1290
    }
1291

    
1292
    ff_lockmgr_cb = cb;
1293

    
1294
    if (ff_lockmgr_cb) {
1295
        if (ff_lockmgr_cb(&codec_mutex, AV_LOCK_CREATE))
1296
            return -1;
1297
    }
1298
    return 0;
1299
}
1300

    
1301
unsigned int ff_toupper4(unsigned int x)
1302
{
1303
    return     toupper( x     &0xFF)
1304
    + (toupper((x>>8 )&0xFF)<<8 )
1305
    + (toupper((x>>16)&0xFF)<<16)
1306
    + (toupper((x>>24)&0xFF)<<24);
1307
}
1308

    
1309
#if !HAVE_PTHREADS
1310

    
1311
int ff_thread_get_buffer(AVCodecContext *avctx, AVFrame *f)
1312
{
1313
    f->owner = avctx;
1314
    return avctx->get_buffer(avctx, f);
1315
}
1316

    
1317
void ff_thread_release_buffer(AVCodecContext *avctx, AVFrame *f)
1318
{
1319
    f->owner->release_buffer(f->owner, f);
1320
}
1321

    
1322
void ff_thread_finish_setup(AVCodecContext *avctx)
1323
{
1324
}
1325

    
1326
void ff_thread_report_progress(AVFrame *f, int progress, int field)
1327
{
1328
}
1329

    
1330
void ff_thread_await_progress(AVFrame *f, int progress, int field)
1331
{
1332
}
1333

    
1334
#endif
1335

    
1336
#if LIBAVCODEC_VERSION_MAJOR < 53
1337

    
1338
int avcodec_thread_init(AVCodecContext *s, int thread_count)
1339
{
1340
    return ff_thread_init(s, thread_count);
1341
}
1342

    
1343
void avcodec_thread_free(AVCodecContext *s)
1344
{
1345
#if HAVE_THREADS
1346
    ff_thread_free(s);
1347
#endif
1348
}
1349

    
1350
#endif