Statistics
| Branch: | Revision:

ffmpeg / libavcodec / utils.c @ ad82bf9c

History | View | Annotate | Download (38.8 KB)

1
/*
2
 * utils for libavcodec
3
 * Copyright (c) 2001 Fabrice Bellard
4
 * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
5
 *
6
 * This file is part of FFmpeg.
7
 *
8
 * FFmpeg is free software; you can redistribute it and/or
9
 * modify it under the terms of the GNU Lesser General Public
10
 * License as published by the Free Software Foundation; either
11
 * version 2.1 of the License, or (at your option) any later version.
12
 *
13
 * FFmpeg is distributed in the hope that it will be useful,
14
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
16
 * Lesser General Public License for more details.
17
 *
18
 * You should have received a copy of the GNU Lesser General Public
19
 * License along with FFmpeg; if not, write to the Free Software
20
 * 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
    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 = pic->best_effort_timestamp = 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
    avctx->pts_correction_num_faulty_pts =
565
    avctx->pts_correction_num_faulty_dts = 0;
566
    avctx->pts_correction_last_pts =
567
    avctx->pts_correction_last_dts = INT64_MIN;
568

    
569
    if(avctx->codec->init && !(avctx->active_thread_type&FF_THREAD_FRAME)){
570
        ret = avctx->codec->init(avctx);
571
        if (ret < 0) {
572
            goto free_and_end;
573
        }
574
    }
575
    ret=0;
576
end:
577
    entangled_thread_counter--;
578

    
579
    /* Release any user-supplied mutex. */
580
    if (ff_lockmgr_cb) {
581
        (*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_RELEASE);
582
    }
583
    return ret;
584
free_and_end:
585
    av_freep(&avctx->priv_data);
586
    avctx->codec= NULL;
587
    goto end;
588
}
589

    
590
int attribute_align_arg avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size,
591
                         const short *samples)
592
{
593
    if(buf_size < FF_MIN_BUFFER_SIZE && 0){
594
        av_log(avctx, AV_LOG_ERROR, "buffer smaller than minimum size\n");
595
        return -1;
596
    }
597
    if((avctx->codec->capabilities & CODEC_CAP_DELAY) || samples){
598
        int ret = avctx->codec->encode(avctx, buf, buf_size, samples);
599
        avctx->frame_number++;
600
        return ret;
601
    }else
602
        return 0;
603
}
604

    
605
int attribute_align_arg avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
606
                         const AVFrame *pict)
607
{
608
    if(buf_size < FF_MIN_BUFFER_SIZE){
609
        av_log(avctx, AV_LOG_ERROR, "buffer smaller than minimum size\n");
610
        return -1;
611
    }
612
    if(av_image_check_size(avctx->width, avctx->height, 0, avctx))
613
        return -1;
614
    if((avctx->codec->capabilities & CODEC_CAP_DELAY) || pict){
615
        int ret = avctx->codec->encode(avctx, buf, buf_size, pict);
616
        avctx->frame_number++;
617
        emms_c(); //needed to avoid an emms_c() call before every return;
618

    
619
        return ret;
620
    }else
621
        return 0;
622
}
623

    
624
int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size,
625
                            const AVSubtitle *sub)
626
{
627
    int ret;
628
    if(sub->start_display_time) {
629
        av_log(avctx, AV_LOG_ERROR, "start_display_time must be 0.\n");
630
        return -1;
631
    }
632
    if(sub->num_rects == 0 || !sub->rects)
633
        return -1;
634
    ret = avctx->codec->encode(avctx, buf, buf_size, sub);
635
    avctx->frame_number++;
636
    return ret;
637
}
638

    
639
/**
640
 * Attempt to guess proper monotonic timestamps for decoded video frames
641
 * which might have incorrect times. Input timestamps may wrap around, in
642
 * which case the output will as well.
643
 *
644
 * @param pts the pts field of the decoded AVPacket, as passed through
645
 * AVFrame.pkt_pts
646
 * @param dts the dts field of the decoded AVPacket
647
 * @return one of the input values, may be AV_NOPTS_VALUE
648
 */
649
static int64_t guess_correct_pts(AVCodecContext *ctx,
650
                                 int64_t reordered_pts, int64_t dts)
651
{
652
    int64_t pts = AV_NOPTS_VALUE;
653

    
654
    if (dts != AV_NOPTS_VALUE) {
655
        ctx->pts_correction_num_faulty_dts += dts <= ctx->pts_correction_last_dts;
656
        ctx->pts_correction_last_dts = dts;
657
    }
658
    if (reordered_pts != AV_NOPTS_VALUE) {
659
        ctx->pts_correction_num_faulty_pts += reordered_pts <= ctx->pts_correction_last_pts;
660
        ctx->pts_correction_last_pts = reordered_pts;
661
    }
662
    if ((ctx->pts_correction_num_faulty_pts<=ctx->pts_correction_num_faulty_dts || dts == AV_NOPTS_VALUE)
663
       && reordered_pts != AV_NOPTS_VALUE)
664
        pts = reordered_pts;
665
    else
666
        pts = dts;
667

    
668
    return pts;
669
}
670

    
671

    
672
#if FF_API_VIDEO_OLD
673
int attribute_align_arg avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture,
674
                         int *got_picture_ptr,
675
                         const uint8_t *buf, int buf_size)
676
{
677
    AVPacket avpkt;
678
    av_init_packet(&avpkt);
679
    avpkt.data = buf;
680
    avpkt.size = buf_size;
681
    // HACK for CorePNG to decode as normal PNG by default
682
    avpkt.flags = AV_PKT_FLAG_KEY;
683

    
684
    return avcodec_decode_video2(avctx, picture, got_picture_ptr, &avpkt);
685
}
686
#endif
687

    
688
int attribute_align_arg avcodec_decode_video2(AVCodecContext *avctx, AVFrame *picture,
689
                         int *got_picture_ptr,
690
                         AVPacket *avpkt)
691
{
692
    int ret;
693

    
694
    *got_picture_ptr= 0;
695
    if((avctx->coded_width||avctx->coded_height) && av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx))
696
        return -1;
697

    
698
    avctx->pkt = avpkt;
699

    
700
    if((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size || (avctx->active_thread_type&FF_THREAD_FRAME)){
701
        if (HAVE_PTHREADS && avctx->active_thread_type&FF_THREAD_FRAME)
702
             ret = ff_thread_decode_frame(avctx, picture, got_picture_ptr,
703
                                          avpkt);
704
        else {
705
            ret = avctx->codec->decode(avctx, picture, got_picture_ptr,
706
                              avpkt);
707
            picture->pkt_dts= avpkt->dts;
708
        }
709

    
710
        emms_c(); //needed to avoid an emms_c() call before every return;
711

    
712

    
713
        if (*got_picture_ptr){
714
            avctx->frame_number++;
715
            picture->best_effort_timestamp = guess_correct_pts(avctx,
716
                                                            picture->pkt_pts,
717
                                                            picture->pkt_dts);
718
        }
719
    }else
720
        ret= 0;
721

    
722
    return ret;
723
}
724

    
725
#if FF_API_AUDIO_OLD
726
int attribute_align_arg avcodec_decode_audio2(AVCodecContext *avctx, int16_t *samples,
727
                         int *frame_size_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_audio3(avctx, samples, frame_size_ptr, &avpkt);
736
}
737
#endif
738

    
739
int attribute_align_arg avcodec_decode_audio3(AVCodecContext *avctx, int16_t *samples,
740
                         int *frame_size_ptr,
741
                         AVPacket *avpkt)
742
{
743
    int ret;
744

    
745
    avctx->pkt = avpkt;
746

    
747
    if((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size){
748
        //FIXME remove the check below _after_ ensuring that all audio check that the available space is enough
749
        if(*frame_size_ptr < AVCODEC_MAX_AUDIO_FRAME_SIZE){
750
            av_log(avctx, AV_LOG_ERROR, "buffer smaller than AVCODEC_MAX_AUDIO_FRAME_SIZE\n");
751
            return -1;
752
        }
753
        if(*frame_size_ptr < FF_MIN_BUFFER_SIZE ||
754
        *frame_size_ptr < avctx->channels * avctx->frame_size * sizeof(int16_t)){
755
            av_log(avctx, AV_LOG_ERROR, "buffer %d too small\n", *frame_size_ptr);
756
            return -1;
757
        }
758

    
759
        ret = avctx->codec->decode(avctx, samples, frame_size_ptr, avpkt);
760
        avctx->frame_number++;
761
    }else{
762
        ret= 0;
763
        *frame_size_ptr=0;
764
    }
765
    return ret;
766
}
767

    
768
#if FF_API_SUBTITLE_OLD
769
int avcodec_decode_subtitle(AVCodecContext *avctx, AVSubtitle *sub,
770
                            int *got_sub_ptr,
771
                            const uint8_t *buf, int buf_size)
772
{
773
    AVPacket avpkt;
774
    av_init_packet(&avpkt);
775
    avpkt.data = buf;
776
    avpkt.size = buf_size;
777

    
778
    return avcodec_decode_subtitle2(avctx, sub, got_sub_ptr, &avpkt);
779
}
780
#endif
781

    
782
int avcodec_decode_subtitle2(AVCodecContext *avctx, AVSubtitle *sub,
783
                            int *got_sub_ptr,
784
                            AVPacket *avpkt)
785
{
786
    int ret;
787

    
788
    avctx->pkt = avpkt;
789
    *got_sub_ptr = 0;
790
    ret = avctx->codec->decode(avctx, sub, got_sub_ptr, avpkt);
791
    if (*got_sub_ptr)
792
        avctx->frame_number++;
793
    return ret;
794
}
795

    
796
void avsubtitle_free(AVSubtitle *sub)
797
{
798
    int i;
799

    
800
    for (i = 0; i < sub->num_rects; i++)
801
    {
802
        av_freep(&sub->rects[i]->pict.data[0]);
803
        av_freep(&sub->rects[i]->pict.data[1]);
804
        av_freep(&sub->rects[i]->pict.data[2]);
805
        av_freep(&sub->rects[i]->pict.data[3]);
806
        av_freep(&sub->rects[i]->text);
807
        av_freep(&sub->rects[i]->ass);
808
        av_freep(&sub->rects[i]);
809
    }
810

    
811
    av_freep(&sub->rects);
812

    
813
    memset(sub, 0, sizeof(AVSubtitle));
814
}
815

    
816
av_cold int avcodec_close(AVCodecContext *avctx)
817
{
818
    /* If there is a user-supplied mutex locking routine, call it. */
819
    if (ff_lockmgr_cb) {
820
        if ((*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_OBTAIN))
821
            return -1;
822
    }
823

    
824
    entangled_thread_counter++;
825
    if(entangled_thread_counter != 1){
826
        av_log(avctx, AV_LOG_ERROR, "insufficient thread locking around avcodec_open/close()\n");
827
        entangled_thread_counter--;
828
        return -1;
829
    }
830

    
831
    if (HAVE_THREADS && avctx->thread_opaque)
832
        ff_thread_free(avctx);
833
    if (avctx->codec && avctx->codec->close)
834
        avctx->codec->close(avctx);
835
    avcodec_default_free_buffers(avctx);
836
    avctx->coded_frame = NULL;
837
    av_freep(&avctx->priv_data);
838
    if(avctx->codec && avctx->codec->encode)
839
        av_freep(&avctx->extradata);
840
    avctx->codec = NULL;
841
    avctx->active_thread_type = 0;
842
    entangled_thread_counter--;
843

    
844
    /* Release any user-supplied mutex. */
845
    if (ff_lockmgr_cb) {
846
        (*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_RELEASE);
847
    }
848
    return 0;
849
}
850

    
851
AVCodec *avcodec_find_encoder(enum CodecID id)
852
{
853
    AVCodec *p, *experimental=NULL;
854
    p = first_avcodec;
855
    while (p) {
856
        if (p->encode != NULL && p->id == id) {
857
            if (p->capabilities & CODEC_CAP_EXPERIMENTAL && !experimental) {
858
                experimental = p;
859
            } else
860
                return p;
861
        }
862
        p = p->next;
863
    }
864
    return experimental;
865
}
866

    
867
AVCodec *avcodec_find_encoder_by_name(const char *name)
868
{
869
    AVCodec *p;
870
    if (!name)
871
        return NULL;
872
    p = first_avcodec;
873
    while (p) {
874
        if (p->encode != NULL && strcmp(name,p->name) == 0)
875
            return p;
876
        p = p->next;
877
    }
878
    return NULL;
879
}
880

    
881
AVCodec *avcodec_find_decoder(enum CodecID id)
882
{
883
    AVCodec *p;
884
    p = first_avcodec;
885
    while (p) {
886
        if (p->decode != NULL && p->id == id)
887
            return p;
888
        p = p->next;
889
    }
890
    return NULL;
891
}
892

    
893
AVCodec *avcodec_find_decoder_by_name(const char *name)
894
{
895
    AVCodec *p;
896
    if (!name)
897
        return NULL;
898
    p = first_avcodec;
899
    while (p) {
900
        if (p->decode != NULL && strcmp(name,p->name) == 0)
901
            return p;
902
        p = p->next;
903
    }
904
    return NULL;
905
}
906

    
907
static int get_bit_rate(AVCodecContext *ctx)
908
{
909
    int bit_rate;
910
    int bits_per_sample;
911

    
912
    switch(ctx->codec_type) {
913
    case AVMEDIA_TYPE_VIDEO:
914
    case AVMEDIA_TYPE_DATA:
915
    case AVMEDIA_TYPE_SUBTITLE:
916
    case AVMEDIA_TYPE_ATTACHMENT:
917
        bit_rate = ctx->bit_rate;
918
        break;
919
    case AVMEDIA_TYPE_AUDIO:
920
        bits_per_sample = av_get_bits_per_sample(ctx->codec_id);
921
        bit_rate = bits_per_sample ? ctx->sample_rate * ctx->channels * bits_per_sample : ctx->bit_rate;
922
        break;
923
    default:
924
        bit_rate = 0;
925
        break;
926
    }
927
    return bit_rate;
928
}
929

    
930
size_t av_get_codec_tag_string(char *buf, size_t buf_size, unsigned int codec_tag)
931
{
932
    int i, len, ret = 0;
933

    
934
    for (i = 0; i < 4; i++) {
935
        len = snprintf(buf, buf_size,
936
                       isprint(codec_tag&0xFF) ? "%c" : "[%d]", codec_tag&0xFF);
937
        buf      += len;
938
        buf_size  = buf_size > len ? buf_size - len : 0;
939
        ret      += len;
940
        codec_tag>>=8;
941
    }
942
    return ret;
943
}
944

    
945
void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)
946
{
947
    const char *codec_name;
948
    const char *profile = NULL;
949
    AVCodec *p;
950
    char buf1[32];
951
    int bitrate;
952
    AVRational display_aspect_ratio;
953

    
954
    if (encode)
955
        p = avcodec_find_encoder(enc->codec_id);
956
    else
957
        p = avcodec_find_decoder(enc->codec_id);
958

    
959
    if (p) {
960
        codec_name = p->name;
961
        profile = av_get_profile_name(p, enc->profile);
962
    } else if (enc->codec_id == CODEC_ID_MPEG2TS) {
963
        /* fake mpeg2 transport stream codec (currently not
964
           registered) */
965
        codec_name = "mpeg2ts";
966
    } else if (enc->codec_name[0] != '\0') {
967
        codec_name = enc->codec_name;
968
    } else {
969
        /* output avi tags */
970
        char tag_buf[32];
971
        av_get_codec_tag_string(tag_buf, sizeof(tag_buf), enc->codec_tag);
972
        snprintf(buf1, sizeof(buf1), "%s / 0x%04X", tag_buf, enc->codec_tag);
973
        codec_name = buf1;
974
    }
975

    
976
    switch(enc->codec_type) {
977
    case AVMEDIA_TYPE_VIDEO:
978
        snprintf(buf, buf_size,
979
                 "Video: %s%s",
980
                 codec_name, enc->mb_decision ? " (hq)" : "");
981
        if (profile)
982
            snprintf(buf + strlen(buf), buf_size - strlen(buf),
983
                     " (%s)", profile);
984
        if (enc->pix_fmt != PIX_FMT_NONE) {
985
            snprintf(buf + strlen(buf), buf_size - strlen(buf),
986
                     ", %s",
987
                     avcodec_get_pix_fmt_name(enc->pix_fmt));
988
        }
989
        if (enc->width) {
990
            snprintf(buf + strlen(buf), buf_size - strlen(buf),
991
                     ", %dx%d",
992
                     enc->width, enc->height);
993
            if (enc->sample_aspect_ratio.num) {
994
                av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
995
                          enc->width*enc->sample_aspect_ratio.num,
996
                          enc->height*enc->sample_aspect_ratio.den,
997
                          1024*1024);
998
                snprintf(buf + strlen(buf), buf_size - strlen(buf),
999
                         " [PAR %d:%d DAR %d:%d]",
1000
                         enc->sample_aspect_ratio.num, enc->sample_aspect_ratio.den,
1001
                         display_aspect_ratio.num, display_aspect_ratio.den);
1002
            }
1003
            if(av_log_get_level() >= AV_LOG_DEBUG){
1004
                int g= av_gcd(enc->time_base.num, enc->time_base.den);
1005
                snprintf(buf + strlen(buf), buf_size - strlen(buf),
1006
                     ", %d/%d",
1007
                     enc->time_base.num/g, enc->time_base.den/g);
1008
            }
1009
        }
1010
        if (encode) {
1011
            snprintf(buf + strlen(buf), buf_size - strlen(buf),
1012
                     ", q=%d-%d", enc->qmin, enc->qmax);
1013
        }
1014
        break;
1015
    case AVMEDIA_TYPE_AUDIO:
1016
        snprintf(buf, buf_size,
1017
                 "Audio: %s",
1018
                 codec_name);
1019
        if (profile)
1020
            snprintf(buf + strlen(buf), buf_size - strlen(buf),
1021
                     " (%s)", profile);
1022
        if (enc->sample_rate) {
1023
            snprintf(buf + strlen(buf), buf_size - strlen(buf),
1024
                     ", %d Hz", enc->sample_rate);
1025
        }
1026
        av_strlcat(buf, ", ", buf_size);
1027
        av_get_channel_layout_string(buf + strlen(buf), buf_size - strlen(buf), enc->channels, enc->channel_layout);
1028
        if (enc->sample_fmt != AV_SAMPLE_FMT_NONE) {
1029
            snprintf(buf + strlen(buf), buf_size - strlen(buf),
1030
                     ", %s", av_get_sample_fmt_name(enc->sample_fmt));
1031
        }
1032
        break;
1033
    case AVMEDIA_TYPE_DATA:
1034
        snprintf(buf, buf_size, "Data: %s", codec_name);
1035
        break;
1036
    case AVMEDIA_TYPE_SUBTITLE:
1037
        snprintf(buf, buf_size, "Subtitle: %s", codec_name);
1038
        break;
1039
    case AVMEDIA_TYPE_ATTACHMENT:
1040
        snprintf(buf, buf_size, "Attachment: %s", codec_name);
1041
        break;
1042
    default:
1043
        snprintf(buf, buf_size, "Invalid Codec type %d", enc->codec_type);
1044
        return;
1045
    }
1046
    if (encode) {
1047
        if (enc->flags & CODEC_FLAG_PASS1)
1048
            snprintf(buf + strlen(buf), buf_size - strlen(buf),
1049
                     ", pass 1");
1050
        if (enc->flags & CODEC_FLAG_PASS2)
1051
            snprintf(buf + strlen(buf), buf_size - strlen(buf),
1052
                     ", pass 2");
1053
    }
1054
    bitrate = get_bit_rate(enc);
1055
    if (bitrate != 0) {
1056
        snprintf(buf + strlen(buf), buf_size - strlen(buf),
1057
                 ", %d kb/s", bitrate / 1000);
1058
    }
1059
}
1060

    
1061
const char *av_get_profile_name(const AVCodec *codec, int profile)
1062
{
1063
    const AVProfile *p;
1064
    if (profile == FF_PROFILE_UNKNOWN || !codec->profiles)
1065
        return NULL;
1066

    
1067
    for (p = codec->profiles; p->profile != FF_PROFILE_UNKNOWN; p++)
1068
        if (p->profile == profile)
1069
            return p->name;
1070

    
1071
    return NULL;
1072
}
1073

    
1074
unsigned avcodec_version( void )
1075
{
1076
  return LIBAVCODEC_VERSION_INT;
1077
}
1078

    
1079
const char *avcodec_configuration(void)
1080
{
1081
    return FFMPEG_CONFIGURATION;
1082
}
1083

    
1084
const char *avcodec_license(void)
1085
{
1086
#define LICENSE_PREFIX "libavcodec license: "
1087
    return LICENSE_PREFIX FFMPEG_LICENSE + sizeof(LICENSE_PREFIX) - 1;
1088
}
1089

    
1090
void avcodec_init(void)
1091
{
1092
    static int initialized = 0;
1093

    
1094
    if (initialized != 0)
1095
        return;
1096
    initialized = 1;
1097

    
1098
    dsputil_static_init();
1099
}
1100

    
1101
void avcodec_flush_buffers(AVCodecContext *avctx)
1102
{
1103
    if(HAVE_PTHREADS && avctx->active_thread_type&FF_THREAD_FRAME)
1104
        ff_thread_flush(avctx);
1105
    if(avctx->codec->flush)
1106
        avctx->codec->flush(avctx);
1107
}
1108

    
1109
void avcodec_default_free_buffers(AVCodecContext *s){
1110
    int i, j;
1111

    
1112
    if(s->internal_buffer==NULL) return;
1113

    
1114
    if (s->internal_buffer_count)
1115
        av_log(s, AV_LOG_WARNING, "Found %i unreleased buffers!\n", s->internal_buffer_count);
1116
    for(i=0; i<INTERNAL_BUFFER_SIZE; i++){
1117
        InternalBuffer *buf= &((InternalBuffer*)s->internal_buffer)[i];
1118
        for(j=0; j<4; j++){
1119
            av_freep(&buf->base[j]);
1120
            buf->data[j]= NULL;
1121
        }
1122
    }
1123
    av_freep(&s->internal_buffer);
1124

    
1125
    s->internal_buffer_count=0;
1126
}
1127

    
1128
char av_get_pict_type_char(int pict_type){
1129
    switch(pict_type){
1130
    case FF_I_TYPE: return 'I';
1131
    case FF_P_TYPE: return 'P';
1132
    case FF_B_TYPE: return 'B';
1133
    case FF_S_TYPE: return 'S';
1134
    case FF_SI_TYPE:return 'i';
1135
    case FF_SP_TYPE:return 'p';
1136
    case FF_BI_TYPE:return 'b';
1137
    default:        return '?';
1138
    }
1139
}
1140

    
1141
int av_get_bits_per_sample(enum CodecID codec_id){
1142
    switch(codec_id){
1143
    case CODEC_ID_ADPCM_SBPRO_2:
1144
        return 2;
1145
    case CODEC_ID_ADPCM_SBPRO_3:
1146
        return 3;
1147
    case CODEC_ID_ADPCM_SBPRO_4:
1148
    case CODEC_ID_ADPCM_CT:
1149
    case CODEC_ID_ADPCM_IMA_WAV:
1150
    case CODEC_ID_ADPCM_MS:
1151
    case CODEC_ID_ADPCM_YAMAHA:
1152
        return 4;
1153
    case CODEC_ID_PCM_ALAW:
1154
    case CODEC_ID_PCM_MULAW:
1155
    case CODEC_ID_PCM_S8:
1156
    case CODEC_ID_PCM_U8:
1157
    case CODEC_ID_PCM_ZORK:
1158
        return 8;
1159
    case CODEC_ID_PCM_S16BE:
1160
    case CODEC_ID_PCM_S16LE:
1161
    case CODEC_ID_PCM_S16LE_PLANAR:
1162
    case CODEC_ID_PCM_U16BE:
1163
    case CODEC_ID_PCM_U16LE:
1164
        return 16;
1165
    case CODEC_ID_PCM_S24DAUD:
1166
    case CODEC_ID_PCM_S24BE:
1167
    case CODEC_ID_PCM_S24LE:
1168
    case CODEC_ID_PCM_U24BE:
1169
    case CODEC_ID_PCM_U24LE:
1170
        return 24;
1171
    case CODEC_ID_PCM_S32BE:
1172
    case CODEC_ID_PCM_S32LE:
1173
    case CODEC_ID_PCM_U32BE:
1174
    case CODEC_ID_PCM_U32LE:
1175
    case CODEC_ID_PCM_F32BE:
1176
    case CODEC_ID_PCM_F32LE:
1177
        return 32;
1178
    case CODEC_ID_PCM_F64BE:
1179
    case CODEC_ID_PCM_F64LE:
1180
        return 64;
1181
    default:
1182
        return 0;
1183
    }
1184
}
1185

    
1186
#if FF_API_OLD_SAMPLE_FMT
1187
int av_get_bits_per_sample_format(enum AVSampleFormat sample_fmt) {
1188
    return av_get_bits_per_sample_fmt(sample_fmt);
1189
}
1190
#endif
1191

    
1192
#if !HAVE_THREADS
1193
int ff_thread_init(AVCodecContext *s, int thread_count){
1194
    s->thread_count = thread_count;
1195
    return -1;
1196
}
1197
#endif
1198

    
1199
unsigned int av_xiphlacing(unsigned char *s, unsigned int v)
1200
{
1201
    unsigned int n = 0;
1202

    
1203
    while(v >= 0xff) {
1204
        *s++ = 0xff;
1205
        v -= 0xff;
1206
        n++;
1207
    }
1208
    *s = v;
1209
    n++;
1210
    return n;
1211
}
1212

    
1213
#if LIBAVCODEC_VERSION_MAJOR < 53
1214
#include "libavutil/parseutils.h"
1215

    
1216
int av_parse_video_frame_size(int *width_ptr, int *height_ptr, const char *str)
1217
{
1218
    return av_parse_video_size(width_ptr, height_ptr, str);
1219
}
1220

    
1221
int av_parse_video_frame_rate(AVRational *frame_rate, const char *arg)
1222
{
1223
    return av_parse_video_rate(frame_rate, arg);
1224
}
1225
#endif
1226

    
1227
int ff_match_2uint16(const uint16_t (*tab)[2], int size, int a, int b){
1228
    int i;
1229
    for(i=0; i<size && !(tab[i][0]==a && tab[i][1]==b); i++);
1230
    return i;
1231
}
1232

    
1233
void av_log_missing_feature(void *avc, const char *feature, int want_sample)
1234
{
1235
    av_log(avc, AV_LOG_WARNING, "%s not implemented. Update your FFmpeg "
1236
            "version to the newest one from Git. If the problem still "
1237
            "occurs, it means that your file has a feature which has not "
1238
            "been implemented.", feature);
1239
    if(want_sample)
1240
        av_log_ask_for_sample(avc, NULL);
1241
    else
1242
        av_log(avc, AV_LOG_WARNING, "\n");
1243
}
1244

    
1245
void av_log_ask_for_sample(void *avc, const char *msg)
1246
{
1247
    if (msg)
1248
        av_log(avc, AV_LOG_WARNING, "%s ", msg);
1249
    av_log(avc, AV_LOG_WARNING, "If you want to help, upload a sample "
1250
            "of this file to ftp://upload.ffmpeg.org/MPlayer/incoming/ "
1251
            "and contact the ffmpeg-devel mailing list.\n");
1252
}
1253

    
1254
static AVHWAccel *first_hwaccel = NULL;
1255

    
1256
void av_register_hwaccel(AVHWAccel *hwaccel)
1257
{
1258
    AVHWAccel **p = &first_hwaccel;
1259
    while (*p)
1260
        p = &(*p)->next;
1261
    *p = hwaccel;
1262
    hwaccel->next = NULL;
1263
}
1264

    
1265
AVHWAccel *av_hwaccel_next(AVHWAccel *hwaccel)
1266
{
1267
    return hwaccel ? hwaccel->next : first_hwaccel;
1268
}
1269

    
1270
AVHWAccel *ff_find_hwaccel(enum CodecID codec_id, enum PixelFormat pix_fmt)
1271
{
1272
    AVHWAccel *hwaccel=NULL;
1273

    
1274
    while((hwaccel= av_hwaccel_next(hwaccel))){
1275
        if (   hwaccel->id      == codec_id
1276
            && hwaccel->pix_fmt == pix_fmt)
1277
            return hwaccel;
1278
    }
1279
    return NULL;
1280
}
1281

    
1282
int av_lockmgr_register(int (*cb)(void **mutex, enum AVLockOp op))
1283
{
1284
    if (ff_lockmgr_cb) {
1285
        if (ff_lockmgr_cb(&codec_mutex, AV_LOCK_DESTROY))
1286
            return -1;
1287
    }
1288

    
1289
    ff_lockmgr_cb = cb;
1290

    
1291
    if (ff_lockmgr_cb) {
1292
        if (ff_lockmgr_cb(&codec_mutex, AV_LOCK_CREATE))
1293
            return -1;
1294
    }
1295
    return 0;
1296
}
1297

    
1298
unsigned int ff_toupper4(unsigned int x)
1299
{
1300
    return     toupper( x     &0xFF)
1301
            + (toupper((x>>8 )&0xFF)<<8 )
1302
            + (toupper((x>>16)&0xFF)<<16)
1303
            + (toupper((x>>24)&0xFF)<<24);
1304
}
1305

    
1306
#if !HAVE_PTHREADS
1307

    
1308
int ff_thread_get_buffer(AVCodecContext *avctx, AVFrame *f)
1309
{
1310
    f->owner = avctx;
1311
    return avctx->get_buffer(avctx, f);
1312
}
1313

    
1314
void ff_thread_release_buffer(AVCodecContext *avctx, AVFrame *f)
1315
{
1316
    f->owner->release_buffer(f->owner, f);
1317
}
1318

    
1319
void ff_thread_finish_setup(AVCodecContext *avctx)
1320
{
1321
}
1322

    
1323
void ff_thread_report_progress(AVFrame *f, int progress, int field)
1324
{
1325
}
1326

    
1327
void ff_thread_await_progress(AVFrame *f, int progress, int field)
1328
{
1329
}
1330

    
1331
#endif
1332

    
1333
#if LIBAVCODEC_VERSION_MAJOR < 53
1334

    
1335
int avcodec_thread_init(AVCodecContext *s, int thread_count)
1336
{
1337
    return ff_thread_init(s, thread_count);
1338
}
1339

    
1340
void avcodec_thread_free(AVCodecContext *s)
1341
{
1342
#if HAVE_THREADS
1343
    ff_thread_free(s);
1344
#endif
1345
}
1346

    
1347
#endif