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1
/*
2
 * utils for libavcodec
3
 * Copyright (c) 2001 Fabrice Bellard.
4
 * Copyright (c) 2003 Michel Bardiaux for the av_log API
5
 * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
6
 *
7
 * This library is free software; you can redistribute it and/or
8
 * modify it under the terms of the GNU Lesser General Public
9
 * License as published by the Free Software Foundation; either
10
 * version 2 of the License, or (at your option) any later version.
11
 *
12
 * This library is distributed in the hope that it will be useful,
13
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
15
 * Lesser General Public License for more details.
16
 *
17
 * You should have received a copy of the GNU Lesser General Public
18
 * License along with this library; if not, write to the Free Software
19
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
20
 */
21
 
22
/**
23
 * @file utils.c
24
 * utils.
25
 */
26
 
27
#include "avcodec.h"
28
#include "dsputil.h"
29
#include "mpegvideo.h"
30
#include "integer.h"
31
#include "opt.h"
32
#include <stdarg.h>
33
#include <limits.h>
34
#include <float.h>
35

    
36
const uint8_t ff_reverse[256]={
37
0x00,0x80,0x40,0xC0,0x20,0xA0,0x60,0xE0,0x10,0x90,0x50,0xD0,0x30,0xB0,0x70,0xF0,
38
0x08,0x88,0x48,0xC8,0x28,0xA8,0x68,0xE8,0x18,0x98,0x58,0xD8,0x38,0xB8,0x78,0xF8,
39
0x04,0x84,0x44,0xC4,0x24,0xA4,0x64,0xE4,0x14,0x94,0x54,0xD4,0x34,0xB4,0x74,0xF4,
40
0x0C,0x8C,0x4C,0xCC,0x2C,0xAC,0x6C,0xEC,0x1C,0x9C,0x5C,0xDC,0x3C,0xBC,0x7C,0xFC,
41
0x02,0x82,0x42,0xC2,0x22,0xA2,0x62,0xE2,0x12,0x92,0x52,0xD2,0x32,0xB2,0x72,0xF2,
42
0x0A,0x8A,0x4A,0xCA,0x2A,0xAA,0x6A,0xEA,0x1A,0x9A,0x5A,0xDA,0x3A,0xBA,0x7A,0xFA,
43
0x06,0x86,0x46,0xC6,0x26,0xA6,0x66,0xE6,0x16,0x96,0x56,0xD6,0x36,0xB6,0x76,0xF6,
44
0x0E,0x8E,0x4E,0xCE,0x2E,0xAE,0x6E,0xEE,0x1E,0x9E,0x5E,0xDE,0x3E,0xBE,0x7E,0xFE,
45
0x01,0x81,0x41,0xC1,0x21,0xA1,0x61,0xE1,0x11,0x91,0x51,0xD1,0x31,0xB1,0x71,0xF1,
46
0x09,0x89,0x49,0xC9,0x29,0xA9,0x69,0xE9,0x19,0x99,0x59,0xD9,0x39,0xB9,0x79,0xF9,
47
0x05,0x85,0x45,0xC5,0x25,0xA5,0x65,0xE5,0x15,0x95,0x55,0xD5,0x35,0xB5,0x75,0xF5,
48
0x0D,0x8D,0x4D,0xCD,0x2D,0xAD,0x6D,0xED,0x1D,0x9D,0x5D,0xDD,0x3D,0xBD,0x7D,0xFD,
49
0x03,0x83,0x43,0xC3,0x23,0xA3,0x63,0xE3,0x13,0x93,0x53,0xD3,0x33,0xB3,0x73,0xF3,
50
0x0B,0x8B,0x4B,0xCB,0x2B,0xAB,0x6B,0xEB,0x1B,0x9B,0x5B,0xDB,0x3B,0xBB,0x7B,0xFB,
51
0x07,0x87,0x47,0xC7,0x27,0xA7,0x67,0xE7,0x17,0x97,0x57,0xD7,0x37,0xB7,0x77,0xF7,
52
0x0F,0x8F,0x4F,0xCF,0x2F,0xAF,0x6F,0xEF,0x1F,0x9F,0x5F,0xDF,0x3F,0xBF,0x7F,0xFF,
53
};
54

    
55
static int volatile entangled_thread_counter=0;
56

    
57
void avcodec_default_free_buffers(AVCodecContext *s);
58

    
59
void *av_mallocz(unsigned int size)
60
{
61
    void *ptr;
62
    
63
    ptr = av_malloc(size);
64
    if (!ptr)
65
        return NULL;
66
    memset(ptr, 0, size);
67
    return ptr;
68
}
69

    
70
char *av_strdup(const char *s)
71
{
72
    char *ptr;
73
    int len;
74
    len = strlen(s) + 1;
75
    ptr = av_malloc(len);
76
    if (!ptr)
77
        return NULL;
78
    memcpy(ptr, s, len);
79
    return ptr;
80
}
81

    
82
/**
83
 * realloc which does nothing if the block is large enough
84
 */
85
void *av_fast_realloc(void *ptr, unsigned int *size, unsigned int min_size)
86
{
87
    if(min_size < *size) 
88
        return ptr;
89
    
90
    *size= FFMAX(17*min_size/16 + 32, min_size);
91

    
92
    return av_realloc(ptr, *size);
93
}
94

    
95

    
96
static unsigned int last_static = 0;
97
static unsigned int allocated_static = 0;
98
static void** array_static = NULL;
99

    
100
/**
101
 * allocation of static arrays - do not use for normal allocation.
102
 */
103
void *av_mallocz_static(unsigned int size)
104
{
105
    void *ptr = av_mallocz(size);
106

    
107
    if(ptr){ 
108
        array_static =av_fast_realloc(array_static, &allocated_static, sizeof(void*)*(last_static+1));
109
        if(!array_static)
110
            return NULL;
111
        array_static[last_static++] = ptr;
112
    }
113

    
114
    return ptr;
115
}
116

    
117
/**
118
 * same as above, but does realloc
119
 */
120

    
121
void *av_realloc_static(void *ptr, unsigned int size)
122
{
123
    int i;
124
    if(!ptr)
125
      return av_mallocz_static(size);
126
    /* Look for the old ptr */
127
    for(i = 0; i < last_static; i++) {
128
        if(array_static[i] == ptr) {
129
            array_static[i] = av_realloc(array_static[i], size);
130
            return array_static[i];
131
        }
132
    }
133
    return NULL;
134

    
135
}
136

    
137
/**
138
 * free all static arrays and reset pointers to 0.
139
 */
140
void av_free_static(void)
141
{
142
    while(last_static){
143
        av_freep(&array_static[--last_static]);
144
    }
145
    av_freep(&array_static);
146
}
147

    
148
/**
149
 * Call av_free_static automatically before it's too late
150
 */
151

    
152
static void do_free() __attribute__ ((destructor));
153

    
154
static void do_free()
155
{
156
    av_free_static();
157
}
158

    
159
/**
160
 * Frees memory and sets the pointer to NULL.
161
 * @param arg pointer to the pointer which should be freed
162
 */
163
void av_freep(void *arg)
164
{
165
    void **ptr= (void**)arg;
166
    av_free(*ptr);
167
    *ptr = NULL;
168
}
169

    
170
/* encoder management */
171
AVCodec *first_avcodec = NULL;
172

    
173
void register_avcodec(AVCodec *format)
174
{
175
    AVCodec **p;
176
    p = &first_avcodec;
177
    while (*p != NULL) p = &(*p)->next;
178
    *p = format;
179
    format->next = NULL;
180
}
181

    
182
void avcodec_set_dimensions(AVCodecContext *s, int width, int height){
183
    s->coded_width = width;
184
    s->coded_height= height;
185
    s->width = -((-width )>>s->lowres);
186
    s->height= -((-height)>>s->lowres);
187
}
188

    
189
typedef struct InternalBuffer{
190
    int last_pic_num;
191
    uint8_t *base[4];
192
    uint8_t *data[4];
193
    int linesize[4];
194
}InternalBuffer;
195

    
196
#define INTERNAL_BUFFER_SIZE 32
197

    
198
#define ALIGN(x, a) (((x)+(a)-1)&~((a)-1))
199

    
200
void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height){
201
    int w_align= 1;    
202
    int h_align= 1;    
203
    
204
    switch(s->pix_fmt){
205
    case PIX_FMT_YUV420P:
206
    case PIX_FMT_YUV422:
207
    case PIX_FMT_UYVY422:
208
    case PIX_FMT_YUV422P:
209
    case PIX_FMT_YUV444P:
210
    case PIX_FMT_GRAY8:
211
    case PIX_FMT_YUVJ420P:
212
    case PIX_FMT_YUVJ422P:
213
    case PIX_FMT_YUVJ444P:
214
        w_align= 16; //FIXME check for non mpeg style codecs and use less alignment
215
        h_align= 16;
216
        break;
217
    case PIX_FMT_YUV411P:
218
    case PIX_FMT_UYVY411:
219
        w_align=32;
220
        h_align=8;
221
        break;
222
    case PIX_FMT_YUV410P:
223
        if(s->codec_id == CODEC_ID_SVQ1){
224
            w_align=64;
225
            h_align=64;
226
        }
227
    case PIX_FMT_RGB555:
228
        if(s->codec_id == CODEC_ID_RPZA){
229
            w_align=4;
230
            h_align=4;
231
        }
232
    case PIX_FMT_PAL8:
233
        if(s->codec_id == CODEC_ID_SMC){
234
            w_align=4;
235
            h_align=4;
236
        }
237
        break;
238
    case PIX_FMT_BGR24:
239
        if((s->codec_id == CODEC_ID_MSZH) || (s->codec_id == CODEC_ID_ZLIB)){
240
            w_align=4;
241
            h_align=4;
242
        }
243
        break;
244
    default:
245
        w_align= 1;
246
        h_align= 1;
247
        break;
248
    }
249

    
250
    *width = ALIGN(*width , w_align);
251
    *height= ALIGN(*height, h_align);
252
}
253

    
254
int avcodec_check_dimensions(void *av_log_ctx, unsigned int w, unsigned int h){
255
    if((int)w>0 && (int)h>0 && (w+128)*(uint64_t)(h+128) < INT_MAX/4)
256
        return 0;
257
    
258
    av_log(av_log_ctx, AV_LOG_ERROR, "picture size invalid (%ux%u)\n", w, h);
259
    return -1;
260
}
261

    
262
int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic){
263
    int i;
264
    int w= s->width;
265
    int h= s->height;
266
    InternalBuffer *buf;
267
    int *picture_number;
268

    
269
    assert(pic->data[0]==NULL);
270
    assert(INTERNAL_BUFFER_SIZE > s->internal_buffer_count);
271

    
272
    if(avcodec_check_dimensions(s,w,h))
273
        return -1;
274

    
275
    if(s->internal_buffer==NULL){
276
        s->internal_buffer= av_mallocz(INTERNAL_BUFFER_SIZE*sizeof(InternalBuffer));
277
    }
278
#if 0
279
    s->internal_buffer= av_fast_realloc(
280
        s->internal_buffer, 
281
        &s->internal_buffer_size, 
282
        sizeof(InternalBuffer)*FFMAX(99,  s->internal_buffer_count+1)/*FIXME*/
283
        );
284
#endif
285
     
286
    buf= &((InternalBuffer*)s->internal_buffer)[s->internal_buffer_count];
287
    picture_number= &(((InternalBuffer*)s->internal_buffer)[INTERNAL_BUFFER_SIZE-1]).last_pic_num; //FIXME ugly hack
288
    (*picture_number)++;
289
    
290
    if(buf->base[0]){
291
        pic->age= *picture_number - buf->last_pic_num;
292
        buf->last_pic_num= *picture_number;
293
    }else{
294
        int h_chroma_shift, v_chroma_shift;
295
        int pixel_size, size[3];
296
        AVPicture picture;
297

    
298
        avcodec_get_chroma_sub_sample(s->pix_fmt, &h_chroma_shift, &v_chroma_shift);
299

    
300
        avcodec_align_dimensions(s, &w, &h);
301
            
302
        if(!(s->flags&CODEC_FLAG_EMU_EDGE)){
303
            w+= EDGE_WIDTH*2;
304
            h+= EDGE_WIDTH*2;
305
        }
306
        avpicture_fill(&picture, NULL, s->pix_fmt, w, h);
307
        pixel_size= picture.linesize[0]*8 / w;
308
//av_log(NULL, AV_LOG_ERROR, "%d %d %d %d\n", (int)picture.data[1], w, h, s->pix_fmt);
309
        assert(pixel_size>=1);
310
            //FIXME next ensures that linesize= 2^x uvlinesize, thats needed because some MC code assumes it
311
        if(pixel_size == 3*8)
312
            w= ALIGN(w, STRIDE_ALIGN<<h_chroma_shift);
313
        else
314
            w= ALIGN(pixel_size*w, STRIDE_ALIGN<<(h_chroma_shift+3)) / pixel_size;
315
        size[1] = avpicture_fill(&picture, NULL, s->pix_fmt, w, h);
316
        size[0] = picture.linesize[0] * h;
317
        size[1] -= size[0];
318
        if(picture.data[2])
319
            size[1]= size[2]= size[1]/2;
320
        else
321
            size[2]= 0;
322

    
323
        buf->last_pic_num= -256*256*256*64;
324
        memset(buf->base, 0, sizeof(buf->base));
325
        memset(buf->data, 0, sizeof(buf->data));
326

    
327
        for(i=0; i<3 && size[i]; i++){
328
            const int h_shift= i==0 ? 0 : h_chroma_shift;
329
            const int v_shift= i==0 ? 0 : v_chroma_shift;
330

    
331
            buf->linesize[i]= picture.linesize[i];
332

    
333
            buf->base[i]= av_malloc(size[i]+16); //FIXME 16
334
            if(buf->base[i]==NULL) return -1;
335
            memset(buf->base[i], 128, size[i]);
336

    
337
            // no edge if EDEG EMU or not planar YUV, we check for PAL8 redundantly to protect against a exploitable bug regression ...
338
            if((s->flags&CODEC_FLAG_EMU_EDGE) || (s->pix_fmt == PIX_FMT_PAL8) || !size[2]) 
339
                buf->data[i] = buf->base[i];
340
            else
341
                buf->data[i] = buf->base[i] + ALIGN((buf->linesize[i]*EDGE_WIDTH>>v_shift) + (EDGE_WIDTH>>h_shift), STRIDE_ALIGN);
342
        }
343
        pic->age= 256*256*256*64;
344
    }
345
    pic->type= FF_BUFFER_TYPE_INTERNAL;
346

    
347
    for(i=0; i<4; i++){
348
        pic->base[i]= buf->base[i];
349
        pic->data[i]= buf->data[i];
350
        pic->linesize[i]= buf->linesize[i];
351
    }
352
    s->internal_buffer_count++;
353

    
354
    return 0;
355
}
356

    
357
void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic){
358
    int i;
359
    InternalBuffer *buf, *last, temp;
360

    
361
    assert(pic->type==FF_BUFFER_TYPE_INTERNAL);
362
    assert(s->internal_buffer_count);
363

    
364
    buf = NULL; /* avoids warning */
365
    for(i=0; i<s->internal_buffer_count; i++){ //just 3-5 checks so is not worth to optimize
366
        buf= &((InternalBuffer*)s->internal_buffer)[i];
367
        if(buf->data[0] == pic->data[0])
368
            break;
369
    }
370
    assert(i < s->internal_buffer_count);
371
    s->internal_buffer_count--;
372
    last = &((InternalBuffer*)s->internal_buffer)[s->internal_buffer_count];
373

    
374
    temp= *buf;
375
    *buf= *last;
376
    *last= temp;
377

    
378
    for(i=0; i<3; i++){
379
        pic->data[i]=NULL;
380
//        pic->base[i]=NULL;
381
    }
382
//printf("R%X\n", pic->opaque);
383
}
384

    
385
int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic){
386
    AVFrame temp_pic;
387
    int i;
388

    
389
    /* If no picture return a new buffer */
390
    if(pic->data[0] == NULL) {
391
        /* We will copy from buffer, so must be readable */
392
        pic->buffer_hints |= FF_BUFFER_HINTS_READABLE;
393
        return s->get_buffer(s, pic);
394
    }
395

    
396
    /* If internal buffer type return the same buffer */
397
    if(pic->type == FF_BUFFER_TYPE_INTERNAL)
398
        return 0;
399

    
400
    /*
401
     * Not internal type and reget_buffer not overridden, emulate cr buffer
402
     */
403
    temp_pic = *pic;
404
    for(i = 0; i < 4; i++)
405
        pic->data[i] = pic->base[i] = NULL;
406
    pic->opaque = NULL;
407
    /* Allocate new frame */
408
    if (s->get_buffer(s, pic))
409
        return -1;
410
    /* Copy image data from old buffer to new buffer */
411
    img_copy((AVPicture*)pic, (AVPicture*)&temp_pic, s->pix_fmt, s->width,
412
             s->height);
413
    s->release_buffer(s, &temp_pic); // Release old frame
414
    return 0;
415
}
416

    
417
int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2),void **arg, int *ret, int count){
418
    int i;
419

    
420
    for(i=0; i<count; i++){
421
        int r= func(c, arg[i]);
422
        if(ret) ret[i]= r;
423
    }
424
    return 0;
425
}
426

    
427
enum PixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum PixelFormat * fmt){
428
    return fmt[0];
429
}
430

    
431
static const char* context_to_name(void* ptr) {
432
    AVCodecContext *avc= ptr;
433

    
434
    if(avc && avc->codec && avc->codec->name)
435
        return avc->codec->name; 
436
    else
437
        return "NULL";
438
}
439

    
440
#define OFFSET(x) (int)&((AVCodecContext*)0)->x
441
#define DEFAULT 0 //should be NAN but it doesnt work as its not a constant in glibc as required by ANSI/ISO C
442
//these names are too long to be readable
443
#define V AV_OPT_FLAG_VIDEO_PARAM
444
#define A AV_OPT_FLAG_AUDIO_PARAM
445
#define S AV_OPT_FLAG_SUBTITLE_PARAM
446
#define E AV_OPT_FLAG_ENCODING_PARAM 
447
#define D AV_OPT_FLAG_DECODING_PARAM
448

    
449
static AVOption options[]={
450
{"bit_rate", NULL, OFFSET(bit_rate), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|A|E},
451
{"bit_rate_tolerance", NULL, OFFSET(bit_rate_tolerance), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
452
{"flags", NULL, OFFSET(flags), FF_OPT_TYPE_FLAGS, DEFAULT, INT_MIN, INT_MAX, V|A|E|D, "flags"},
453
{"mv4", "use four motion vector by macroblock (mpeg4)", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_4MV, INT_MIN, INT_MAX, V|E, "flags"},
454
{"obmc", "use overlapped block motion compensation (h263+)", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_OBMC, INT_MIN, INT_MAX, V|E, "flags"},
455
{"qpel", "use 1/4 pel motion compensation", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_QPEL, INT_MIN, INT_MAX, V|E, "flags"},
456
{"loop", "use loop filter", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_LOOP_FILTER, INT_MIN, INT_MAX, V|E, "flags"},
457
{"qscale", "use fixed qscale", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_QSCALE, INT_MIN, INT_MAX, 0, "flags"},
458
{"gmc", "use gmc", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_GMC, INT_MIN, INT_MAX, V|E, "flags"},
459
{"mv0", "always try a mb with mv=<0,0>", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_MV0, INT_MIN, INT_MAX, V|E, "flags"},
460
{"part", "use data partitioning", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_PART, INT_MIN, INT_MAX, V|E, "flags"},
461
{"input_preserved", NULL, 0, FF_OPT_TYPE_CONST, CODEC_FLAG_INPUT_PRESERVED, INT_MIN, INT_MAX, 0, "flags"},
462
{"pass1", "use internal 2pass ratecontrol in first  pass mode", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_PASS1, INT_MIN, INT_MAX, 0, "flags"},
463
{"pass2", "use internal 2pass ratecontrol in second pass mode", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_PASS2, INT_MIN, INT_MAX, 0, "flags"},
464
{"extern_huff", "use external huffman table (for mjpeg)", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_EXTERN_HUFF, INT_MIN, INT_MAX, 0, "flags"},
465
{"gray", "only decode/encode grayscale", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_GRAY, INT_MIN, INT_MAX, V|E|D, "flags"},
466
{"emu_edge", "don't draw edges", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_EMU_EDGE, INT_MIN, INT_MAX, 0, "flags"},
467
{"psnr", "error[?] variables will be set during encoding", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_PSNR, INT_MIN, INT_MAX, V|E, "flags"},
468
{"truncated", NULL, 0, FF_OPT_TYPE_CONST, CODEC_FLAG_TRUNCATED, INT_MIN, INT_MAX, 0, "flags"},
469
{"naq", "normalize adaptive quantization", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_NORMALIZE_AQP, INT_MIN, INT_MAX, V|E, "flags"},
470
{"ildct", "use interlaced dct", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_INTERLACED_DCT, INT_MIN, INT_MAX, V|E, "flags"},
471
{"low_delay", "force low delay", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_LOW_DELAY, INT_MIN, INT_MAX, V|D, "flags"},
472
{"alt", "enable alternate scantable (mpeg2/mpeg4)", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_ALT_SCAN, INT_MIN, INT_MAX, V|E, "flags"},
473
{"trell", "use trellis quantization", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_TRELLIS_QUANT, INT_MIN, INT_MAX, V|E, "flags"},
474
{"global_header", "place global headers in extradata instead of every keyframe", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_GLOBAL_HEADER, INT_MIN, INT_MAX, 0, "flags"},
475
{"bitexact", "use only bitexact stuff (except (i)dct)", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_BITEXACT, INT_MIN, INT_MAX, A|V|S|D|E, "flags"},
476
{"aic", "h263 advanced intra coding / mpeg4 ac prediction", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_AC_PRED, INT_MIN, INT_MAX, V|E, "flags"},
477
{"umv", "use unlimited motion vectors", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_H263P_UMV, INT_MIN, INT_MAX, V|E, "flags"},
478
{"cbp", "use rate distortion optimization for cbp", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_CBP_RD, INT_MIN, INT_MAX, V|E, "flags"},
479
{"qprd", "use rate distortion optimization for qp selection", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_QP_RD, INT_MIN, INT_MAX, V|E, "flags"},
480
{"aiv", "h263 alternative inter vlc", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_H263P_AIV, INT_MIN, INT_MAX, V|E, "flags"},
481
{"slice", NULL, 0, FF_OPT_TYPE_CONST, CODEC_FLAG_H263P_SLICE_STRUCT, INT_MIN, INT_MAX, V|E, "flags"},
482
{"ilme", "interlaced motion estimation", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_INTERLACED_ME, INT_MIN, INT_MAX, V|E, "flags"},
483
{"scan_offset", "will reserve space for svcd scan offset user data", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_SVCD_SCAN_OFFSET, INT_MIN, INT_MAX, V|E, "flags"},
484
{"cgop", "closed gop", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_CLOSED_GOP, INT_MIN, INT_MAX, V|E, "flags"},
485
{"fast", "allow non spec compliant speedup tricks", 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_FAST, INT_MIN, INT_MAX, V|E, "flags2"},
486
{"sgop", "strictly enforce gop size", 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_STRICT_GOP, INT_MIN, INT_MAX, V|E, "flags2"},
487
{"noout", "skip bitstream encoding", 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_NO_OUTPUT, INT_MIN, INT_MAX, V|E, "flags2"},
488
{"local_header", "place global headers at every keyframe instead of in extradata", 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_LOCAL_HEADER, INT_MIN, INT_MAX, V|E, "flags2"},
489
{"sub_id", NULL, OFFSET(sub_id), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
490
{"me_method", NULL, OFFSET(me_method), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E, "me_method"},
491
{"extradata_size", NULL, OFFSET(extradata_size), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
492
{"time_base", NULL, OFFSET(time_base), FF_OPT_TYPE_RATIONAL, DEFAULT, INT_MIN, INT_MAX},
493
{"gop_size", NULL, OFFSET(gop_size), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
494
{"rate_emu", NULL, OFFSET(rate_emu), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
495
{"sample_rate", NULL, OFFSET(sample_rate), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
496
{"channels", NULL, OFFSET(channels), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
497
{"frame_size", NULL, OFFSET(frame_size), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
498
{"frame_number", NULL, OFFSET(frame_number), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
499
{"real_pict_num", NULL, OFFSET(real_pict_num), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
500
{"delay", NULL, OFFSET(delay), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
501
{"qcompress", NULL, OFFSET(qcompress), FF_OPT_TYPE_FLOAT, DEFAULT, FLT_MIN, FLT_MAX, V|E},
502
{"qblur", NULL, OFFSET(qblur), FF_OPT_TYPE_FLOAT, DEFAULT, FLT_MIN, FLT_MAX, V|E},
503
{"qmin", NULL, OFFSET(qmin), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
504
{"qmax", NULL, OFFSET(qmax), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
505
{"max_qdiff", NULL, OFFSET(max_qdiff), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
506
{"max_b_frames", NULL, OFFSET(max_b_frames), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
507
{"b_quant_factor", NULL, OFFSET(b_quant_factor), FF_OPT_TYPE_FLOAT, DEFAULT, FLT_MIN, FLT_MAX, V|E},
508
{"rc_strategy", NULL, OFFSET(rc_strategy), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
509
{"b_frame_strategy", NULL, OFFSET(b_frame_strategy), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
510
{"hurry_up", NULL, OFFSET(hurry_up), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|D},
511
{"rtp_mode", NULL, OFFSET(rtp_mode), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
512
{"rtp_payload_size", NULL, OFFSET(rtp_payload_size), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
513
{"mv_bits", NULL, OFFSET(mv_bits), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
514
{"header_bits", NULL, OFFSET(header_bits), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
515
{"i_tex_bits", NULL, OFFSET(i_tex_bits), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
516
{"p_tex_bits", NULL, OFFSET(p_tex_bits), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
517
{"i_count", NULL, OFFSET(i_count), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
518
{"p_count", NULL, OFFSET(p_count), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
519
{"skip_count", NULL, OFFSET(skip_count), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
520
{"misc_bits", NULL, OFFSET(misc_bits), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
521
{"frame_bits", NULL, OFFSET(frame_bits), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
522
{"codec_tag", NULL, OFFSET(codec_tag), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
523
{"bugs", NULL, OFFSET(workaround_bugs), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|D, "bug"},
524
{"autodetect", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_AUTODETECT, INT_MIN, INT_MAX, V|D, "bug"},
525
{"old_msmpeg4", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_OLD_MSMPEG4, INT_MIN, INT_MAX, V|D, "bug"},
526
{"xvid_ilace", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_XVID_ILACE, INT_MIN, INT_MAX, V|D, "bug"},
527
{"ump4", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_UMP4, INT_MIN, INT_MAX, V|D, "bug"},
528
{"no_padding", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_NO_PADDING, INT_MIN, INT_MAX, V|D, "bug"},
529
{"amv", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_AMV, INT_MIN, INT_MAX, V|D, "bug"},
530
{"ac_vlc", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_AC_VLC, INT_MIN, INT_MAX, V|D, "bug"},
531
{"qpel_chroma", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_QPEL_CHROMA, INT_MIN, INT_MAX, V|D, "bug"},
532
{"std_qpel", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_STD_QPEL, INT_MIN, INT_MAX, V|D, "bug"},
533
{"qpel_chroma2", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_QPEL_CHROMA2, INT_MIN, INT_MAX, V|D, "bug"},
534
{"direct_blocksize", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_DIRECT_BLOCKSIZE, INT_MIN, INT_MAX, V|D, "bug"},
535
{"edge", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_EDGE, INT_MIN, INT_MAX, V|D, "bug"},
536
{"hpel_chroma", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_HPEL_CHROMA, INT_MIN, INT_MAX, V|D, "bug"},
537
{"dc_clip", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_DC_CLIP, INT_MIN, INT_MAX, V|D, "bug"},
538
{"ms", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_MS, INT_MIN, INT_MAX, V|D, "bug"},
539
{"lelim", "single coefficient elimination threshold for luminance (negative values also consider dc coefficient)", OFFSET(luma_elim_threshold), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
540
{"celim", "single coefficient elimination threshold for chrominance (negative values also consider dc coefficient)", OFFSET(chroma_elim_threshold), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
541
{"strict", NULL, OFFSET(strict_std_compliance), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E, "strict"},
542
{"very", NULL, 0, FF_OPT_TYPE_CONST, FF_COMPLIANCE_VERY_STRICT, INT_MIN, INT_MAX, V|E, "strict"},
543
{"strict", NULL, 0, FF_OPT_TYPE_CONST, FF_COMPLIANCE_STRICT, INT_MIN, INT_MAX, V|E, "strict"},
544
{"normal", NULL, 0, FF_OPT_TYPE_CONST, FF_COMPLIANCE_NORMAL, INT_MIN, INT_MAX, V|E, "strict"},
545
{"inofficial", NULL, 0, FF_OPT_TYPE_CONST, FF_COMPLIANCE_INOFFICIAL, INT_MIN, INT_MAX, V|E, "strict"},
546
{"experimental", NULL, 0, FF_OPT_TYPE_CONST, FF_COMPLIANCE_EXPERIMENTAL, INT_MIN, INT_MAX, V|E, "strict"},
547
{"b_quant_offset", NULL, OFFSET(b_quant_offset), FF_OPT_TYPE_FLOAT, DEFAULT, FLT_MIN, FLT_MAX, V|E},
548
{"er", NULL, OFFSET(error_resilience), FF_OPT_TYPE_INT, FF_ER_CAREFUL, INT_MIN, INT_MAX, V|D, "er"},
549
{"careful", NULL, 0, FF_OPT_TYPE_CONST, FF_ER_CAREFUL, INT_MIN, INT_MAX, V|D, "er"},
550
{"compliant", NULL, 0, FF_OPT_TYPE_CONST, FF_ER_COMPLIANT, INT_MIN, INT_MAX, V|D, "er"},
551
{"aggressive", NULL, 0, FF_OPT_TYPE_CONST, FF_ER_AGGRESSIVE, INT_MIN, INT_MAX, V|D, "er"},
552
{"very_aggressive", NULL, 0, FF_OPT_TYPE_CONST, FF_ER_VERY_AGGRESSIVE, INT_MIN, INT_MAX, V|D, "er"},
553
{"has_b_frames", NULL, OFFSET(has_b_frames), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
554
{"block_align", NULL, OFFSET(block_align), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
555
{"parse_only", NULL, OFFSET(parse_only), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
556
{"mpeg_quant", NULL, OFFSET(mpeg_quant), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
557
{"stats_out", NULL, OFFSET(stats_out), FF_OPT_TYPE_STRING, DEFAULT, CHAR_MIN, CHAR_MAX},
558
{"stats_in", NULL, OFFSET(stats_in), FF_OPT_TYPE_STRING, DEFAULT, CHAR_MIN, CHAR_MAX},
559
{"rc_qsquish", NULL, OFFSET(rc_qsquish), FF_OPT_TYPE_FLOAT, DEFAULT, FLT_MIN, FLT_MAX, V|E},
560
{"rc_qmod_amp", NULL, OFFSET(rc_qmod_amp), FF_OPT_TYPE_FLOAT, DEFAULT, FLT_MIN, FLT_MAX, V|E},
561
{"rc_qmod_freq", NULL, OFFSET(rc_qmod_freq), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
562
{"rc_override_count", NULL, OFFSET(rc_override_count), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
563
{"rc_eq", NULL, OFFSET(rc_eq), FF_OPT_TYPE_STRING, DEFAULT, CHAR_MIN, CHAR_MAX, V|E},
564
{"rc_max_rate", NULL, OFFSET(rc_max_rate), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
565
{"rc_min_rate", NULL, OFFSET(rc_min_rate), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
566
{"rc_buffer_size", NULL, OFFSET(rc_buffer_size), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
567
{"rc_buf_aggressivity", NULL, OFFSET(rc_buffer_aggressivity), FF_OPT_TYPE_FLOAT, DEFAULT, FLT_MIN, FLT_MAX, V|E},
568
{"i_quant_factor", NULL, OFFSET(i_quant_factor), FF_OPT_TYPE_FLOAT, DEFAULT, FLT_MIN, FLT_MAX, V|E},
569
{"i_quant_offset", NULL, OFFSET(i_quant_offset), FF_OPT_TYPE_FLOAT, DEFAULT, FLT_MIN, FLT_MAX, V|E},
570
{"rc_initial_cplx", NULL, OFFSET(rc_initial_cplx), FF_OPT_TYPE_FLOAT, DEFAULT, FLT_MIN, FLT_MAX, V|E},
571
{"dct", NULL, OFFSET(dct_algo), FF_OPT_TYPE_INT, DEFAULT, 0, INT_MAX, V|E, "dct"},
572
{"auto", NULL, 0, FF_OPT_TYPE_CONST, FF_DCT_AUTO, INT_MIN, INT_MAX, V|E, "dct"},
573
{"fastint", NULL, 0, FF_OPT_TYPE_CONST, FF_DCT_FASTINT, INT_MIN, INT_MAX, V|E, "dct"},
574
{"int", NULL, 0, FF_OPT_TYPE_CONST, FF_DCT_INT, INT_MIN, INT_MAX, V|E, "dct"},
575
{"mmx", NULL, 0, FF_OPT_TYPE_CONST, FF_DCT_MMX, INT_MIN, INT_MAX, V|E, "dct"},
576
{"mlib", NULL, 0, FF_OPT_TYPE_CONST, FF_DCT_MLIB, INT_MIN, INT_MAX, V|E, "dct"},
577
{"altivec", NULL, 0, FF_OPT_TYPE_CONST, FF_DCT_ALTIVEC, INT_MIN, INT_MAX, V|E, "dct"},
578
{"faan", NULL, 0, FF_OPT_TYPE_CONST, FF_DCT_FAAN, INT_MIN, INT_MAX, V|E, "dct"},
579
{"lumi_mask", "lumimasking", OFFSET(lumi_masking), FF_OPT_TYPE_FLOAT, 0, FLT_MIN, FLT_MAX, V|E},
580
{"tcplx_mask", "temporal complexity masking", OFFSET(temporal_cplx_masking), FF_OPT_TYPE_FLOAT, 0, FLT_MIN, FLT_MAX, V|E},
581
{"scplx_mask", "spatial complexity masking", OFFSET(spatial_cplx_masking), FF_OPT_TYPE_FLOAT, 0, FLT_MIN, FLT_MAX, V|E},
582
{"p_mask", "inter masking", OFFSET(p_masking), FF_OPT_TYPE_FLOAT, 0, FLT_MIN, FLT_MAX, V|E},
583
{"dark_mask", "darkness masking", OFFSET(dark_masking), FF_OPT_TYPE_FLOAT, 0, FLT_MIN, FLT_MAX, V|E},
584
{"unused", NULL, OFFSET(unused), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
585
{"idct", NULL, OFFSET(idct_algo), FF_OPT_TYPE_INT, DEFAULT, 0, INT_MAX, V|E|D, "idct"},
586
{"auto", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_AUTO, INT_MIN, INT_MAX, V|E|D, "idct"},
587
{"int", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_INT, INT_MIN, INT_MAX, V|E|D, "idct"},
588
{"simple", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_SIMPLE, INT_MIN, INT_MAX, V|E|D, "idct"},
589
{"simplemmx", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_SIMPLEMMX, INT_MIN, INT_MAX, V|E|D, "idct"},
590
{"libmpeg2mmx", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_LIBMPEG2MMX, INT_MIN, INT_MAX, V|E|D, "idct"},
591
{"ps2", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_PS2, INT_MIN, INT_MAX, V|E|D, "idct"},
592
{"mlib", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_MLIB, INT_MIN, INT_MAX, V|E|D, "idct"},
593
{"arm", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_ARM, INT_MIN, INT_MAX, V|E|D, "idct"},
594
{"altivec", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_ALTIVEC, INT_MIN, INT_MAX, V|E|D, "idct"},
595
{"sh4", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_SH4, INT_MIN, INT_MAX, V|E|D, "idct"},
596
{"simplearm", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_SIMPLEARM, INT_MIN, INT_MAX, V|E|D, "idct"},
597
{"h264", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_H264, INT_MIN, INT_MAX, V|E|D, "idct"},
598
{"vp3", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_VP3, INT_MIN, INT_MAX, V|E|D, "idct"},
599
{"ipp", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_IPP, INT_MIN, INT_MAX, V|E|D, "idct"},
600
{"xvidmmx", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_XVIDMMX, INT_MIN, INT_MAX, V|E|D, "idct"},
601
{"slice_count", NULL, OFFSET(slice_count), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
602
{"ec", NULL, OFFSET(error_concealment), FF_OPT_TYPE_FLAGS, 3, INT_MIN, INT_MAX, V|D, "ec"},
603
{"guess_mvs", NULL, 0, FF_OPT_TYPE_CONST, FF_EC_GUESS_MVS, INT_MIN, INT_MAX, V|D, "ec"},
604
{"deblock", NULL, 0, FF_OPT_TYPE_CONST, FF_EC_DEBLOCK, INT_MIN, INT_MAX, V|D, "ec"},
605
{"bits_per_sample", NULL, OFFSET(bits_per_sample), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
606
{"pred", "prediction method", OFFSET(prediction_method), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E, "pred"},
607
{"left", NULL, 0, FF_OPT_TYPE_CONST, FF_PRED_LEFT, INT_MIN, INT_MAX, V|E, "pred"},
608
{"plane", NULL, 0, FF_OPT_TYPE_CONST, FF_PRED_PLANE, INT_MIN, INT_MAX, V|E, "pred"},
609
{"median", NULL, 0, FF_OPT_TYPE_CONST, FF_PRED_MEDIAN, INT_MIN, INT_MAX, V|E, "pred"},
610
{"aspect", NULL, OFFSET(sample_aspect_ratio), FF_OPT_TYPE_RATIONAL, DEFAULT, 0, 10, V|E},
611
{"debug", "print specific debug info", OFFSET(debug), FF_OPT_TYPE_FLAGS, DEFAULT, 0, INT_MAX, V|A|S|E|D, "debug"},
612
{"pict", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_PICT_INFO, INT_MIN, INT_MAX, V|D, "debug"},
613
{"rc", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_RC, INT_MIN, INT_MAX, V|E, "debug"},
614
{"bitstream", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_BITSTREAM, INT_MIN, INT_MAX, V|D, "debug"},
615
{"mb_type", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_MB_TYPE, INT_MIN, INT_MAX, V|D, "debug"},
616
{"qp", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_QP, INT_MIN, INT_MAX, V|D, "debug"},
617
{"mv", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_MV, INT_MIN, INT_MAX, V|D, "debug"},
618
{"dct_coeff", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_DCT_COEFF, INT_MIN, INT_MAX, V|D, "debug"},
619
{"skip", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_SKIP, INT_MIN, INT_MAX, V|D, "debug"},
620
{"startcode", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_STARTCODE, INT_MIN, INT_MAX, V|D, "debug"},
621
{"pts", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_PTS, INT_MIN, INT_MAX, V|D, "debug"},
622
{"er", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_ER, INT_MIN, INT_MAX, V|D, "debug"},
623
{"mmco", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_MMCO, INT_MIN, INT_MAX, V|D, "debug"},
624
{"bugs", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_BUGS, INT_MIN, INT_MAX, V|D, "debug"},
625
{"vis_qp", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_VIS_QP, INT_MIN, INT_MAX, V|D, "debug"},
626
{"vis_mb_type", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_VIS_MB_TYPE, INT_MIN, INT_MAX, V|D, "debug"},
627
{"vismv", "visualize motion vectors", OFFSET(debug_mv), FF_OPT_TYPE_INT, DEFAULT, 0, INT_MAX, V|D, "debug_mv"},
628
{"pf", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_VIS_MV_P_FOR, INT_MIN, INT_MAX, V|D, "debug_mv"},
629
{"bf", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_VIS_MV_B_FOR, INT_MIN, INT_MAX, V|D, "debug_mv"},
630
{"bb", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_VIS_MV_B_BACK, INT_MIN, INT_MAX, V|D, "debug_mv"},
631
{"mb_qmin", NULL, OFFSET(mb_qmin), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
632
{"mb_qmax", NULL, OFFSET(mb_qmax), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
633
{"cmp", "full pel me compare function", OFFSET(me_cmp), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E, "cmp_func"},
634
{"subcmp", "sub pel me compare function", OFFSET(me_sub_cmp), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E, "cmp_func"},
635
{"mbcmp", "macroblock compare function", OFFSET(mb_cmp), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E, "cmp_func"},
636
{"ildctcmp", "interlaced dct compare function", OFFSET(ildct_cmp), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E, "cmp_func"},
637
{"dia_size", NULL, OFFSET(dia_size), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
638
{"last_pred", NULL, OFFSET(last_predictor_count), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
639
{"preme", NULL, OFFSET(pre_me), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
640
{"precmp", "pre motion estimation compare function", OFFSET(me_pre_cmp), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E, "cmp_func"},
641
{"sad", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_SAD, INT_MIN, INT_MAX, V|E, "cmp_func"},
642
{"sse", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_SSE, INT_MIN, INT_MAX, V|E, "cmp_func"},
643
{"satd", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_SATD, INT_MIN, INT_MAX, V|E, "cmp_func"},
644
{"dct", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_DCT, INT_MIN, INT_MAX, V|E, "cmp_func"},
645
{"psnr", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_PSNR, INT_MIN, INT_MAX, V|E, "cmp_func"},
646
{"bit", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_BIT, INT_MIN, INT_MAX, V|E, "cmp_func"},
647
{"rd", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_RD, INT_MIN, INT_MAX, V|E, "cmp_func"},
648
{"zero", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_ZERO, INT_MIN, INT_MAX, V|E, "cmp_func"},
649
{"vsad", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_VSAD, INT_MIN, INT_MAX, V|E, "cmp_func"},
650
{"vsse", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_VSSE, INT_MIN, INT_MAX, V|E, "cmp_func"},
651
{"nsse", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_NSSE, INT_MIN, INT_MAX, V|E, "cmp_func"},
652
{"w53", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_W53, INT_MIN, INT_MAX, V|E, "cmp_func"},
653
{"w97", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_W97, INT_MIN, INT_MAX, V|E, "cmp_func"},
654
{"dctmax", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_DCTMAX, INT_MIN, INT_MAX, V|E, "cmp_func"},
655
{"chroma", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_CHROMA, INT_MIN, INT_MAX, V|E, "cmp_func"},
656
{"pre_dia_size", NULL, OFFSET(pre_dia_size), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
657
{"subq", "sub pel motion estimation quality", OFFSET(me_subpel_quality), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
658
{"dtg_active_format", NULL, OFFSET(dtg_active_format), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
659
{"me_range", NULL, OFFSET(me_range), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
660
{"ibias", NULL, OFFSET(intra_quant_bias), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
661
{"pbias", NULL, OFFSET(inter_quant_bias), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
662
{"color_table_id", NULL, OFFSET(color_table_id), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
663
{"internal_buffer_count", NULL, OFFSET(internal_buffer_count), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
664
{"global_quality", NULL, OFFSET(global_quality), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
665
{"coder", NULL, OFFSET(coder_type), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E, "coder"},
666
{"vlc", "variable length coder / huffman coder", 0, FF_OPT_TYPE_CONST, FF_CODER_TYPE_VLC, INT_MIN, INT_MAX, V|E, "coder"},
667
{"ac", "arithmetic coder", 0, FF_OPT_TYPE_CONST, FF_CODER_TYPE_AC, INT_MIN, INT_MAX, V|E, "coder"},
668
{"context", "context model", OFFSET(context_model), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
669
{"slice_flags", NULL, OFFSET(slice_flags), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
670
{"xvmc_acceleration", NULL, OFFSET(xvmc_acceleration), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
671
{"mbd", NULL, OFFSET(mb_decision), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E, "mbd"},
672
{"simple", NULL, 0, FF_OPT_TYPE_CONST, FF_MB_DECISION_SIMPLE, INT_MIN, INT_MAX, V|E, "mbd"},
673
{"bits", NULL, 0, FF_OPT_TYPE_CONST, FF_MB_DECISION_BITS, INT_MIN, INT_MAX, V|E, "mbd"},
674
{"rd", NULL, 0, FF_OPT_TYPE_CONST, FF_MB_DECISION_RD, INT_MIN, INT_MAX, V|E, "mbd"},
675
{"stream_codec_tag", NULL, OFFSET(stream_codec_tag), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
676
{"sc_threshold", NULL, OFFSET(scenechange_threshold), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
677
{"lmin", "min lagrange factor", OFFSET(lmin), FF_OPT_TYPE_INT,  2*FF_QP2LAMBDA, 0, INT_MAX, V|E},
678
{"lmax", "max lagrange factor", OFFSET(lmax), FF_OPT_TYPE_INT, 31*FF_QP2LAMBDA, 0, INT_MAX, V|E},
679
{"nr", "noise reduction", OFFSET(noise_reduction), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
680
{"rc_init_occupancy", NULL, OFFSET(rc_initial_buffer_occupancy), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
681
{"inter_threshold", NULL, OFFSET(inter_threshold), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
682
{"flags2", NULL, OFFSET(flags2), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
683
{"error_rate", NULL, OFFSET(error_rate), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
684
{"antialias", NULL, OFFSET(antialias_algo), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|D, "aa"},
685
{"auto", NULL, 0, FF_OPT_TYPE_CONST, FF_AA_AUTO, INT_MIN, INT_MAX, V|D, "aa"},
686
{"fastint", NULL, 0, FF_OPT_TYPE_CONST, FF_AA_FASTINT, INT_MIN, INT_MAX, V|D, "aa"},
687
{"int", NULL, 0, FF_OPT_TYPE_CONST, FF_AA_INT, INT_MIN, INT_MAX, V|D, "aa"},
688
{"float", NULL, 0, FF_OPT_TYPE_CONST, FF_AA_FLOAT, INT_MIN, INT_MAX, V|D, "aa"},
689
{"qns", "quantizer noise shaping", OFFSET(quantizer_noise_shaping), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
690
{"thread_count", NULL, OFFSET(thread_count), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E|D},
691
{"me_threshold", "motion estimaton threshold", OFFSET(me_threshold), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
692
{"mb_threshold", NULL, OFFSET(mb_threshold), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
693
{"dc", NULL, OFFSET(intra_dc_precision), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
694
{"nssew", "nsse weight", OFFSET(nsse_weight), FF_OPT_TYPE_INT, 8, INT_MIN, INT_MAX, V|E},
695
{"skip_top", NULL, OFFSET(skip_top), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|D},
696
{"skip_bottom", NULL, OFFSET(skip_bottom), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|D},
697
{"profile", NULL, OFFSET(profile), FF_OPT_TYPE_INT, FF_PROFILE_UNKNOWN, INT_MIN, INT_MAX, V|A|E, "profile"},
698
{"unknown", NULL, 0, FF_OPT_TYPE_CONST, FF_PROFILE_UNKNOWN, INT_MIN, INT_MAX, V|A|E, "profile"},
699
{"level", NULL, OFFSET(level), FF_OPT_TYPE_INT, FF_LEVEL_UNKNOWN, INT_MIN, INT_MAX, V|A|E, "level"},
700
{"unknown", NULL, 0, FF_OPT_TYPE_CONST, FF_LEVEL_UNKNOWN, INT_MIN, INT_MAX, V|A|E, "level"},
701
{"lowres", NULL, OFFSET(lowres), FF_OPT_TYPE_INT, 0, 0, INT_MAX, V|D},
702
{"frame_skip_threshold", NULL, OFFSET(frame_skip_threshold), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
703
{"frame_skip_factor", NULL, OFFSET(frame_skip_factor), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
704
{"frame_skip_exp", NULL, OFFSET(frame_skip_exp), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
705
{"skipcmp", "frame skip compare function", OFFSET(frame_skip_cmp), FF_OPT_TYPE_INT, FF_CMP_DCTMAX, INT_MIN, INT_MAX, V|E, "cmp_func"},
706
{"border_mask", NULL, OFFSET(border_masking), FF_OPT_TYPE_FLOAT, DEFAULT, FLT_MIN, FLT_MAX, V|E},
707
{"mb_lmin", NULL, OFFSET(mb_lmin), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
708
{"mb_lmax", NULL, OFFSET(mb_lmax), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
709
{"me_penalty_compensation", NULL, OFFSET(me_penalty_compensation), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
710
{NULL},
711
};
712

    
713
#undef A
714
#undef V
715

    
716
static AVClass av_codec_context_class = { "AVCodecContext", context_to_name, options };
717

    
718
void avcodec_get_context_defaults(AVCodecContext *s){
719
    memset(s, 0, sizeof(AVCodecContext));
720

    
721
    s->av_class= &av_codec_context_class;
722
    s->bit_rate= 800*1000;
723
    s->bit_rate_tolerance= s->bit_rate*10;
724
    s->qmin= 2;
725
    s->qmax= 31;
726
    s->mb_lmin= FF_QP2LAMBDA * 2;
727
    s->mb_lmax= FF_QP2LAMBDA * 31;
728
    s->rc_eq= "tex^qComp";
729
    s->qcompress= 0.5;
730
    s->max_qdiff= 3;
731
    s->b_quant_factor=1.25;
732
    s->b_quant_offset=1.25;
733
    s->i_quant_factor=-0.8;
734
    s->i_quant_offset=0.0;
735
    s->error_concealment= 3;
736
    s->error_resilience= 1;
737
    s->workaround_bugs= FF_BUG_AUTODETECT;
738
    s->time_base= (AVRational){0,1};
739
    s->gop_size= 50;
740
    s->me_method= ME_EPZS;
741
    s->get_buffer= avcodec_default_get_buffer;
742
    s->release_buffer= avcodec_default_release_buffer;
743
    s->get_format= avcodec_default_get_format;
744
    s->execute= avcodec_default_execute;
745
    s->thread_count=1;
746
    s->me_subpel_quality=8;
747
    s->lmin= FF_QP2LAMBDA * s->qmin;
748
    s->lmax= FF_QP2LAMBDA * s->qmax;
749
    s->sample_aspect_ratio= (AVRational){0,1};
750
    s->ildct_cmp= FF_CMP_VSAD;
751
    s->profile= FF_PROFILE_UNKNOWN;
752
    s->level= FF_LEVEL_UNKNOWN;
753
    s->me_penalty_compensation= 256;
754
    s->pix_fmt= PIX_FMT_NONE;
755
    s->frame_skip_cmp= FF_CMP_DCTMAX;
756
    s->nsse_weight= 8;
757
    
758
    s->intra_quant_bias= FF_DEFAULT_QUANT_BIAS;
759
    s->inter_quant_bias= FF_DEFAULT_QUANT_BIAS;
760
    s->palctrl = NULL;
761
    s->reget_buffer= avcodec_default_reget_buffer;
762
}
763

    
764
/**
765
 * allocates a AVCodecContext and set it to defaults.
766
 * this can be deallocated by simply calling free() 
767
 */
768
AVCodecContext *avcodec_alloc_context(void){
769
    AVCodecContext *avctx= av_malloc(sizeof(AVCodecContext));
770
    
771
    if(avctx==NULL) return NULL;
772
    
773
    avcodec_get_context_defaults(avctx);
774
    
775
    return avctx;
776
}
777

    
778
void avcodec_get_frame_defaults(AVFrame *pic){
779
    memset(pic, 0, sizeof(AVFrame));
780

    
781
    pic->pts= AV_NOPTS_VALUE;
782
    pic->key_frame= 1;
783
}
784

    
785
/**
786
 * allocates a AVPFrame and set it to defaults.
787
 * this can be deallocated by simply calling free() 
788
 */
789
AVFrame *avcodec_alloc_frame(void){
790
    AVFrame *pic= av_malloc(sizeof(AVFrame));
791
    
792
    if(pic==NULL) return NULL;
793
    
794
    avcodec_get_frame_defaults(pic);
795
    
796
    return pic;
797
}
798

    
799
int avcodec_open(AVCodecContext *avctx, AVCodec *codec)
800
{
801
    int ret= -1;
802
    
803
    entangled_thread_counter++;
804
    if(entangled_thread_counter != 1){
805
        av_log(avctx, AV_LOG_ERROR, "insufficient thread locking around avcodec_open/close()\n");
806
        goto end;
807
    }
808

    
809
    if(avctx->codec)
810
        goto end;
811

    
812
    avctx->codec = codec;
813
    avctx->codec_id = codec->id;
814
    avctx->frame_number = 0;
815
    if (codec->priv_data_size > 0) {
816
        avctx->priv_data = av_mallocz(codec->priv_data_size);
817
        if (!avctx->priv_data) 
818
            goto end;
819
    } else {
820
        avctx->priv_data = NULL;
821
    }
822

    
823
    if(avctx->coded_width && avctx->coded_height)
824
        avcodec_set_dimensions(avctx, avctx->coded_width, avctx->coded_height);
825
    else if(avctx->width && avctx->height)
826
        avcodec_set_dimensions(avctx, avctx->width, avctx->height);
827

    
828
    if((avctx->coded_width||avctx->coded_height) && avcodec_check_dimensions(avctx,avctx->coded_width,avctx->coded_height)){
829
        av_freep(&avctx->priv_data);
830
        goto end;
831
    }
832

    
833
    ret = avctx->codec->init(avctx);
834
    if (ret < 0) {
835
        av_freep(&avctx->priv_data);
836
        goto end;
837
    }
838
    ret=0;
839
end:
840
    entangled_thread_counter--;
841
    return ret;
842
}
843

    
844
int avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size, 
845
                         const short *samples)
846
{
847
    if(buf_size < FF_MIN_BUFFER_SIZE && 0){
848
        av_log(avctx, AV_LOG_ERROR, "buffer smaller then minimum size\n");
849
        return -1;
850
    }
851
    if((avctx->codec->capabilities & CODEC_CAP_DELAY) || samples){
852
        int ret = avctx->codec->encode(avctx, buf, buf_size, (void *)samples);
853
        avctx->frame_number++;
854
        return ret;
855
    }else
856
        return 0;
857
}
858

    
859
int avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size, 
860
                         const AVFrame *pict)
861
{
862
    if(buf_size < FF_MIN_BUFFER_SIZE){
863
        av_log(avctx, AV_LOG_ERROR, "buffer smaller then minimum size\n");
864
        return -1;
865
    }
866
    if(avcodec_check_dimensions(avctx,avctx->width,avctx->height))
867
        return -1;
868
    if((avctx->codec->capabilities & CODEC_CAP_DELAY) || pict){
869
        int ret = avctx->codec->encode(avctx, buf, buf_size, (void *)pict);
870
        avctx->frame_number++;
871
        emms_c(); //needed to avoid an emms_c() call before every return;
872
    
873
        return ret;
874
    }else
875
        return 0;
876
}
877

    
878
int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size, 
879
                            const AVSubtitle *sub)
880
{
881
    int ret;
882
    ret = avctx->codec->encode(avctx, buf, buf_size, (void *)sub);
883
    avctx->frame_number++;
884
    return ret;
885
}
886

    
887
/** 
888
 * decode a frame. 
889
 * @param buf bitstream buffer, must be FF_INPUT_BUFFER_PADDING_SIZE larger then the actual read bytes
890
 * because some optimized bitstream readers read 32 or 64 bit at once and could read over the end
891
 * @param buf_size the size of the buffer in bytes
892
 * @param got_picture_ptr zero if no frame could be decompressed, Otherwise, it is non zero
893
 * @return -1 if error, otherwise return the number of
894
 * bytes used. 
895
 */
896
int avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture, 
897
                         int *got_picture_ptr,
898
                         uint8_t *buf, int buf_size)
899
{
900
    int ret;
901
    
902
    *got_picture_ptr= 0;
903
    if((avctx->coded_width||avctx->coded_height) && avcodec_check_dimensions(avctx,avctx->coded_width,avctx->coded_height))
904
        return -1;
905
    if((avctx->codec->capabilities & CODEC_CAP_DELAY) || buf_size){
906
        ret = avctx->codec->decode(avctx, picture, got_picture_ptr, 
907
                                buf, buf_size);
908

    
909
        emms_c(); //needed to avoid an emms_c() call before every return;
910
    
911
        if (*got_picture_ptr)                           
912
            avctx->frame_number++;
913
    }else
914
        ret= 0;
915

    
916
    return ret;
917
}
918

    
919
/* decode an audio frame. return -1 if error, otherwise return the
920
   *number of bytes used. If no frame could be decompressed,
921
   *frame_size_ptr is zero. Otherwise, it is the decompressed frame
922
   *size in BYTES. */
923
int avcodec_decode_audio(AVCodecContext *avctx, int16_t *samples, 
924
                         int *frame_size_ptr,
925
                         uint8_t *buf, int buf_size)
926
{
927
    int ret;
928

    
929
    *frame_size_ptr= 0;
930
    if((avctx->codec->capabilities & CODEC_CAP_DELAY) || buf_size){
931
        ret = avctx->codec->decode(avctx, samples, frame_size_ptr, 
932
                                buf, buf_size);
933
        avctx->frame_number++;
934
    }else
935
        ret= 0;
936
    return ret;
937
}
938

    
939
/* decode a subtitle message. return -1 if error, otherwise return the
940
   *number of bytes used. If no subtitle could be decompressed,
941
   *got_sub_ptr is zero. Otherwise, the subtitle is stored in *sub. */
942
int avcodec_decode_subtitle(AVCodecContext *avctx, AVSubtitle *sub,
943
                            int *got_sub_ptr,
944
                            const uint8_t *buf, int buf_size)
945
{
946
    int ret;
947

    
948
    *got_sub_ptr = 0;
949
    ret = avctx->codec->decode(avctx, sub, got_sub_ptr, 
950
                               (uint8_t *)buf, buf_size);
951
    if (*got_sub_ptr)
952
        avctx->frame_number++;
953
    return ret;
954
}
955

    
956
int avcodec_close(AVCodecContext *avctx)
957
{
958
    entangled_thread_counter++;
959
    if(entangled_thread_counter != 1){
960
        av_log(avctx, AV_LOG_ERROR, "insufficient thread locking around avcodec_open/close()\n");
961
        entangled_thread_counter--;
962
        return -1;
963
    }
964

    
965
    if (avctx->codec->close)
966
        avctx->codec->close(avctx);
967
    avcodec_default_free_buffers(avctx);
968
    av_freep(&avctx->priv_data);
969
    avctx->codec = NULL;
970
    entangled_thread_counter--;
971
    return 0;
972
}
973

    
974
AVCodec *avcodec_find_encoder(enum CodecID id)
975
{
976
    AVCodec *p;
977
    p = first_avcodec;
978
    while (p) {
979
        if (p->encode != NULL && p->id == id)
980
            return p;
981
        p = p->next;
982
    }
983
    return NULL;
984
}
985

    
986
AVCodec *avcodec_find_encoder_by_name(const char *name)
987
{
988
    AVCodec *p;
989
    p = first_avcodec;
990
    while (p) {
991
        if (p->encode != NULL && strcmp(name,p->name) == 0)
992
            return p;
993
        p = p->next;
994
    }
995
    return NULL;
996
}
997

    
998
AVCodec *avcodec_find_decoder(enum CodecID id)
999
{
1000
    AVCodec *p;
1001
    p = first_avcodec;
1002
    while (p) {
1003
        if (p->decode != NULL && p->id == id)
1004
            return p;
1005
        p = p->next;
1006
    }
1007
    return NULL;
1008
}
1009

    
1010
AVCodec *avcodec_find_decoder_by_name(const char *name)
1011
{
1012
    AVCodec *p;
1013
    p = first_avcodec;
1014
    while (p) {
1015
        if (p->decode != NULL && strcmp(name,p->name) == 0)
1016
            return p;
1017
        p = p->next;
1018
    }
1019
    return NULL;
1020
}
1021

    
1022
void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)
1023
{
1024
    const char *codec_name;
1025
    AVCodec *p;
1026
    char buf1[32];
1027
    char channels_str[100];
1028
    int bitrate;
1029

    
1030
    if (encode)
1031
        p = avcodec_find_encoder(enc->codec_id);
1032
    else
1033
        p = avcodec_find_decoder(enc->codec_id);
1034

    
1035
    if (p) {
1036
        codec_name = p->name;
1037
        if (!encode && enc->codec_id == CODEC_ID_MP3) {
1038
            if (enc->sub_id == 2)
1039
                codec_name = "mp2";
1040
            else if (enc->sub_id == 1)
1041
                codec_name = "mp1";
1042
        }
1043
    } else if (enc->codec_id == CODEC_ID_MPEG2TS) {
1044
        /* fake mpeg2 transport stream codec (currently not
1045
           registered) */
1046
        codec_name = "mpeg2ts";
1047
    } else if (enc->codec_name[0] != '\0') {
1048
        codec_name = enc->codec_name;
1049
    } else {
1050
        /* output avi tags */
1051
        if(   isprint(enc->codec_tag&0xFF) && isprint((enc->codec_tag>>8)&0xFF) 
1052
           && isprint((enc->codec_tag>>16)&0xFF) && isprint((enc->codec_tag>>24)&0xFF)){
1053
            snprintf(buf1, sizeof(buf1), "%c%c%c%c / 0x%04X", 
1054
                     enc->codec_tag & 0xff,
1055
                     (enc->codec_tag >> 8) & 0xff,
1056
                     (enc->codec_tag >> 16) & 0xff,
1057
                     (enc->codec_tag >> 24) & 0xff,
1058
                      enc->codec_tag);
1059
        } else {
1060
            snprintf(buf1, sizeof(buf1), "0x%04x", enc->codec_tag);
1061
        }
1062
        codec_name = buf1;
1063
    }
1064

    
1065
    switch(enc->codec_type) {
1066
    case CODEC_TYPE_VIDEO:
1067
        snprintf(buf, buf_size,
1068
                 "Video: %s%s",
1069
                 codec_name, enc->mb_decision ? " (hq)" : "");
1070
        if (enc->pix_fmt != PIX_FMT_NONE) {
1071
            snprintf(buf + strlen(buf), buf_size - strlen(buf),
1072
                     ", %s",
1073
                     avcodec_get_pix_fmt_name(enc->pix_fmt));
1074
        }
1075
        if (enc->width) {
1076
            snprintf(buf + strlen(buf), buf_size - strlen(buf),
1077
                     ", %dx%d",
1078
                     enc->width, enc->height);
1079
            if(av_log_get_level() >= AV_LOG_DEBUG){
1080
                int g= ff_gcd(enc->time_base.num, enc->time_base.den);
1081
                snprintf(buf + strlen(buf), buf_size - strlen(buf),
1082
                     ", %d/%d",
1083
                     enc->time_base.num/g, enc->time_base.den/g);
1084
            }
1085
        }
1086
        if (encode) {
1087
            snprintf(buf + strlen(buf), buf_size - strlen(buf),
1088
                     ", q=%d-%d", enc->qmin, enc->qmax);
1089
        }
1090
        bitrate = enc->bit_rate;
1091
        break;
1092
    case CODEC_TYPE_AUDIO:
1093
        snprintf(buf, buf_size,
1094
                 "Audio: %s",
1095
                 codec_name);
1096
        switch (enc->channels) {
1097
            case 1:
1098
                strcpy(channels_str, "mono");
1099
                break;
1100
            case 2:
1101
                strcpy(channels_str, "stereo");
1102
                break;
1103
            case 6:
1104
                strcpy(channels_str, "5:1");
1105
                break;
1106
            default:
1107
                snprintf(channels_str, sizeof(channels_str), "%d channels", enc->channels);
1108
                break;
1109
        }
1110
        if (enc->sample_rate) {
1111
            snprintf(buf + strlen(buf), buf_size - strlen(buf),
1112
                     ", %d Hz, %s",
1113
                     enc->sample_rate,
1114
                     channels_str);
1115
        }
1116
        
1117
        /* for PCM codecs, compute bitrate directly */
1118
        switch(enc->codec_id) {
1119
        case CODEC_ID_PCM_S32LE:
1120
        case CODEC_ID_PCM_S32BE:
1121
        case CODEC_ID_PCM_U32LE:
1122
        case CODEC_ID_PCM_U32BE:
1123
            bitrate = enc->sample_rate * enc->channels * 32;
1124
            break;
1125
        case CODEC_ID_PCM_S24LE:
1126
        case CODEC_ID_PCM_S24BE:
1127
        case CODEC_ID_PCM_U24LE:
1128
        case CODEC_ID_PCM_U24BE:
1129
        case CODEC_ID_PCM_S24DAUD:
1130
            bitrate = enc->sample_rate * enc->channels * 24;
1131
            break;
1132
        case CODEC_ID_PCM_S16LE:
1133
        case CODEC_ID_PCM_S16BE:
1134
        case CODEC_ID_PCM_U16LE:
1135
        case CODEC_ID_PCM_U16BE:
1136
            bitrate = enc->sample_rate * enc->channels * 16;
1137
            break;
1138
        case CODEC_ID_PCM_S8:
1139
        case CODEC_ID_PCM_U8:
1140
        case CODEC_ID_PCM_ALAW:
1141
        case CODEC_ID_PCM_MULAW:
1142
            bitrate = enc->sample_rate * enc->channels * 8;
1143
            break;
1144
        default:
1145
            bitrate = enc->bit_rate;
1146
            break;
1147
        }
1148
        break;
1149
    case CODEC_TYPE_DATA:
1150
        snprintf(buf, buf_size, "Data: %s", codec_name);
1151
        bitrate = enc->bit_rate;
1152
        break;
1153
    case CODEC_TYPE_SUBTITLE:
1154
        snprintf(buf, buf_size, "Subtitle: %s", codec_name);
1155
        bitrate = enc->bit_rate;
1156
        break;
1157
    default:
1158
        snprintf(buf, buf_size, "Invalid Codec type %d", enc->codec_type);
1159
        return;
1160
    }
1161
    if (encode) {
1162
        if (enc->flags & CODEC_FLAG_PASS1)
1163
            snprintf(buf + strlen(buf), buf_size - strlen(buf),
1164
                     ", pass 1");
1165
        if (enc->flags & CODEC_FLAG_PASS2)
1166
            snprintf(buf + strlen(buf), buf_size - strlen(buf),
1167
                     ", pass 2");
1168
    }
1169
    if (bitrate != 0) {
1170
        snprintf(buf + strlen(buf), buf_size - strlen(buf), 
1171
                 ", %d kb/s", bitrate / 1000);
1172
    }
1173
}
1174

    
1175
unsigned avcodec_version( void )
1176
{
1177
  return LIBAVCODEC_VERSION_INT;
1178
}
1179

    
1180
unsigned avcodec_build( void )
1181
{
1182
  return LIBAVCODEC_BUILD;
1183
}
1184

    
1185
/* must be called before any other functions */
1186
void avcodec_init(void)
1187
{
1188
    static int inited = 0;
1189

    
1190
    if (inited != 0)
1191
        return;
1192
    inited = 1;
1193

    
1194
    dsputil_static_init();
1195
}
1196

    
1197
/**
1198
 * Flush buffers, should be called when seeking or when swicthing to a different stream.
1199
 */
1200
void avcodec_flush_buffers(AVCodecContext *avctx)
1201
{
1202
    if(avctx->codec->flush)
1203
        avctx->codec->flush(avctx);
1204
}
1205

    
1206
void avcodec_default_free_buffers(AVCodecContext *s){
1207
    int i, j;
1208

    
1209
    if(s->internal_buffer==NULL) return;
1210
    
1211
    for(i=0; i<INTERNAL_BUFFER_SIZE; i++){
1212
        InternalBuffer *buf= &((InternalBuffer*)s->internal_buffer)[i];
1213
        for(j=0; j<4; j++){
1214
            av_freep(&buf->base[j]);
1215
            buf->data[j]= NULL;
1216
        }
1217
    }
1218
    av_freep(&s->internal_buffer);
1219
    
1220
    s->internal_buffer_count=0;
1221
}
1222

    
1223
char av_get_pict_type_char(int pict_type){
1224
    switch(pict_type){
1225
    case I_TYPE: return 'I'; 
1226
    case P_TYPE: return 'P'; 
1227
    case B_TYPE: return 'B'; 
1228
    case S_TYPE: return 'S'; 
1229
    case SI_TYPE:return 'i'; 
1230
    case SP_TYPE:return 'p'; 
1231
    default:     return '?';
1232
    }
1233
}
1234

    
1235
/* av_log API */
1236

    
1237
static int av_log_level = AV_LOG_INFO;
1238

    
1239
static void av_log_default_callback(void* ptr, int level, const char* fmt, va_list vl)
1240
{
1241
    static int print_prefix=1;
1242
    AVClass* avc= ptr ? *(AVClass**)ptr : NULL;
1243
    if(level>av_log_level)
1244
        return;
1245
#undef fprintf
1246
    if(print_prefix && avc) {
1247
            fprintf(stderr, "[%s @ %p]", avc->item_name(ptr), avc);
1248
    }
1249
#define fprintf please_use_av_log
1250
        
1251
    print_prefix= strstr(fmt, "\n") != NULL;
1252
        
1253
    vfprintf(stderr, fmt, vl);
1254
}
1255

    
1256
static void (*av_log_callback)(void*, int, const char*, va_list) = av_log_default_callback;
1257

    
1258
void av_log(void* avcl, int level, const char *fmt, ...)
1259
{
1260
    va_list vl;
1261
    va_start(vl, fmt);
1262
    av_vlog(avcl, level, fmt, vl);
1263
    va_end(vl);
1264
}
1265

    
1266
void av_vlog(void* avcl, int level, const char *fmt, va_list vl)
1267
{
1268
    av_log_callback(avcl, level, fmt, vl);
1269
}
1270

    
1271
int av_log_get_level(void)
1272
{
1273
    return av_log_level;
1274
}
1275

    
1276
void av_log_set_level(int level)
1277
{
1278
    av_log_level = level;
1279
}
1280

    
1281
void av_log_set_callback(void (*callback)(void*, int, const char*, va_list))
1282
{
1283
    av_log_callback = callback;
1284
}
1285

    
1286
#if !defined(HAVE_THREADS)
1287
int avcodec_thread_init(AVCodecContext *s, int thread_count){
1288
    return -1;
1289
}
1290
#endif
1291

    
1292
unsigned int av_xiphlacing(unsigned char *s, unsigned int v)
1293
{
1294
    unsigned int n = 0;
1295

    
1296
    while(v >= 0xff) {
1297
        *s++ = 0xff;
1298
        v -= 0xff;
1299
        n++;
1300
    }
1301
    *s = v;
1302
    n++;
1303
    return n;
1304
}