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1
/*
2
 * utils for libavcodec
3
 * Copyright (c) 2001 Fabrice Bellard.
4
 * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
5
 *
6
 * This file is part of FFmpeg.
7
 *
8
 * FFmpeg is free software; you can redistribute it and/or
9
 * modify it under the terms of the GNU Lesser General Public
10
 * License as published by the Free Software Foundation; either
11
 * version 2.1 of the License, or (at your option) any later version.
12
 *
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 utils.c
25
 * utils.
26
 */
27

    
28
#include "avcodec.h"
29
#include "dsputil.h"
30
#include "mpegvideo.h"
31
#include "integer.h"
32
#include "opt.h"
33
#include "crc.h"
34
#include <stdarg.h>
35
#include <limits.h>
36
#include <float.h>
37
#if !defined(HAVE_MKSTEMP)
38
#include <fcntl.h>
39
#endif
40

    
41
const uint8_t ff_reverse[256]={
42
0x00,0x80,0x40,0xC0,0x20,0xA0,0x60,0xE0,0x10,0x90,0x50,0xD0,0x30,0xB0,0x70,0xF0,
43
0x08,0x88,0x48,0xC8,0x28,0xA8,0x68,0xE8,0x18,0x98,0x58,0xD8,0x38,0xB8,0x78,0xF8,
44
0x04,0x84,0x44,0xC4,0x24,0xA4,0x64,0xE4,0x14,0x94,0x54,0xD4,0x34,0xB4,0x74,0xF4,
45
0x0C,0x8C,0x4C,0xCC,0x2C,0xAC,0x6C,0xEC,0x1C,0x9C,0x5C,0xDC,0x3C,0xBC,0x7C,0xFC,
46
0x02,0x82,0x42,0xC2,0x22,0xA2,0x62,0xE2,0x12,0x92,0x52,0xD2,0x32,0xB2,0x72,0xF2,
47
0x0A,0x8A,0x4A,0xCA,0x2A,0xAA,0x6A,0xEA,0x1A,0x9A,0x5A,0xDA,0x3A,0xBA,0x7A,0xFA,
48
0x06,0x86,0x46,0xC6,0x26,0xA6,0x66,0xE6,0x16,0x96,0x56,0xD6,0x36,0xB6,0x76,0xF6,
49
0x0E,0x8E,0x4E,0xCE,0x2E,0xAE,0x6E,0xEE,0x1E,0x9E,0x5E,0xDE,0x3E,0xBE,0x7E,0xFE,
50
0x01,0x81,0x41,0xC1,0x21,0xA1,0x61,0xE1,0x11,0x91,0x51,0xD1,0x31,0xB1,0x71,0xF1,
51
0x09,0x89,0x49,0xC9,0x29,0xA9,0x69,0xE9,0x19,0x99,0x59,0xD9,0x39,0xB9,0x79,0xF9,
52
0x05,0x85,0x45,0xC5,0x25,0xA5,0x65,0xE5,0x15,0x95,0x55,0xD5,0x35,0xB5,0x75,0xF5,
53
0x0D,0x8D,0x4D,0xCD,0x2D,0xAD,0x6D,0xED,0x1D,0x9D,0x5D,0xDD,0x3D,0xBD,0x7D,0xFD,
54
0x03,0x83,0x43,0xC3,0x23,0xA3,0x63,0xE3,0x13,0x93,0x53,0xD3,0x33,0xB3,0x73,0xF3,
55
0x0B,0x8B,0x4B,0xCB,0x2B,0xAB,0x6B,0xEB,0x1B,0x9B,0x5B,0xDB,0x3B,0xBB,0x7B,0xFB,
56
0x07,0x87,0x47,0xC7,0x27,0xA7,0x67,0xE7,0x17,0x97,0x57,0xD7,0x37,0xB7,0x77,0xF7,
57
0x0F,0x8F,0x4F,0xCF,0x2F,0xAF,0x6F,0xEF,0x1F,0x9F,0x5F,0xDF,0x3F,0xBF,0x7F,0xFF,
58
};
59

    
60
static int volatile entangled_thread_counter=0;
61

    
62
void *av_fast_realloc(void *ptr, unsigned int *size, unsigned int min_size)
63
{
64
    if(min_size < *size)
65
        return ptr;
66

    
67
    *size= FFMAX(17*min_size/16 + 32, min_size);
68

    
69
    return av_realloc(ptr, *size);
70
}
71

    
72
static unsigned int last_static = 0;
73
static unsigned int allocated_static = 0;
74
static void** array_static = NULL;
75

    
76
void *av_mallocz_static(unsigned int size)
77
{
78
    void *ptr = av_mallocz(size);
79

    
80
    if(ptr){
81
        array_static =av_fast_realloc(array_static, &allocated_static, sizeof(void*)*(last_static+1));
82
        if(!array_static)
83
            return NULL;
84
        array_static[last_static++] = ptr;
85
    }
86

    
87
    return ptr;
88
}
89

    
90
void *ff_realloc_static(void *ptr, unsigned int size)
91
{
92
    int i;
93
    if(!ptr)
94
      return av_mallocz_static(size);
95
    /* Look for the old ptr */
96
    for(i = 0; i < last_static; i++) {
97
        if(array_static[i] == ptr) {
98
            array_static[i] = av_realloc(array_static[i], size);
99
            return array_static[i];
100
        }
101
    }
102
    return NULL;
103

    
104
}
105

    
106
void av_free_static(void)
107
{
108
    while(last_static){
109
        av_freep(&array_static[--last_static]);
110
    }
111
    av_freep(&array_static);
112
}
113

    
114
/**
115
 * Call av_free_static automatically before it's too late
116
 */
117

    
118
static void do_free(void) __attribute__ ((destructor));
119

    
120
static void do_free(void)
121
{
122
    av_free_static();
123
}
124

    
125

    
126
/* encoder management */
127
AVCodec *first_avcodec = NULL;
128

    
129
AVCodec *av_codec_next(AVCodec *c){
130
    if(c) return c->next;
131
    else  return first_avcodec;
132
}
133

    
134
void register_avcodec(AVCodec *format)
135
{
136
    AVCodec **p;
137
    p = &first_avcodec;
138
    while (*p != NULL) p = &(*p)->next;
139
    *p = format;
140
    format->next = NULL;
141
}
142

    
143
void avcodec_set_dimensions(AVCodecContext *s, int width, int height){
144
    s->coded_width = width;
145
    s->coded_height= height;
146
    s->width = -((-width )>>s->lowres);
147
    s->height= -((-height)>>s->lowres);
148
}
149

    
150
typedef struct InternalBuffer{
151
    int last_pic_num;
152
    uint8_t *base[4];
153
    uint8_t *data[4];
154
    int linesize[4];
155
    int width, height;
156
    enum PixelFormat pix_fmt;
157
}InternalBuffer;
158

    
159
#define INTERNAL_BUFFER_SIZE 32
160

    
161
#define ALIGN(x, a) (((x)+(a)-1)&~((a)-1))
162

    
163
void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height){
164
    int w_align= 1;
165
    int h_align= 1;
166

    
167
    switch(s->pix_fmt){
168
    case PIX_FMT_YUV420P:
169
    case PIX_FMT_YUYV422:
170
    case PIX_FMT_UYVY422:
171
    case PIX_FMT_YUV422P:
172
    case PIX_FMT_YUV444P:
173
    case PIX_FMT_GRAY8:
174
    case PIX_FMT_GRAY16BE:
175
    case PIX_FMT_GRAY16LE:
176
    case PIX_FMT_YUVJ420P:
177
    case PIX_FMT_YUVJ422P:
178
    case PIX_FMT_YUVJ444P:
179
    case PIX_FMT_YUVA420P:
180
        w_align= 16; //FIXME check for non mpeg style codecs and use less alignment
181
        h_align= 16;
182
        break;
183
    case PIX_FMT_YUV411P:
184
    case PIX_FMT_UYYVYY411:
185
        w_align=32;
186
        h_align=8;
187
        break;
188
    case PIX_FMT_YUV410P:
189
        if(s->codec_id == CODEC_ID_SVQ1){
190
            w_align=64;
191
            h_align=64;
192
        }
193
    case PIX_FMT_RGB555:
194
        if(s->codec_id == CODEC_ID_RPZA){
195
            w_align=4;
196
            h_align=4;
197
        }
198
    case PIX_FMT_PAL8:
199
        if(s->codec_id == CODEC_ID_SMC){
200
            w_align=4;
201
            h_align=4;
202
        }
203
        break;
204
    case PIX_FMT_BGR24:
205
        if((s->codec_id == CODEC_ID_MSZH) || (s->codec_id == CODEC_ID_ZLIB)){
206
            w_align=4;
207
            h_align=4;
208
        }
209
        break;
210
    default:
211
        w_align= 1;
212
        h_align= 1;
213
        break;
214
    }
215

    
216
    *width = ALIGN(*width , w_align);
217
    *height= ALIGN(*height, h_align);
218
}
219

    
220
int avcodec_check_dimensions(void *av_log_ctx, unsigned int w, unsigned int h){
221
    if((int)w>0 && (int)h>0 && (w+128)*(uint64_t)(h+128) < INT_MAX/4)
222
        return 0;
223

    
224
    av_log(av_log_ctx, AV_LOG_ERROR, "picture size invalid (%ux%u)\n", w, h);
225
    return -1;
226
}
227

    
228
int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic){
229
    int i;
230
    int w= s->width;
231
    int h= s->height;
232
    InternalBuffer *buf;
233
    int *picture_number;
234

    
235
    if(pic->data[0]!=NULL) {
236
        av_log(s, AV_LOG_ERROR, "pic->data[0]!=NULL in avcodec_default_get_buffer\n");
237
        return -1;
238
    }
239
    if(s->internal_buffer_count >= INTERNAL_BUFFER_SIZE) {
240
        av_log(s, AV_LOG_ERROR, "internal_buffer_count overflow (missing release_buffer?)\n");
241
        return -1;
242
    }
243

    
244
    if(avcodec_check_dimensions(s,w,h))
245
        return -1;
246

    
247
    if(s->internal_buffer==NULL){
248
        s->internal_buffer= av_mallocz(INTERNAL_BUFFER_SIZE*sizeof(InternalBuffer));
249
    }
250
#if 0
251
    s->internal_buffer= av_fast_realloc(
252
        s->internal_buffer,
253
        &s->internal_buffer_size,
254
        sizeof(InternalBuffer)*FFMAX(99,  s->internal_buffer_count+1)/*FIXME*/
255
        );
256
#endif
257

    
258
    buf= &((InternalBuffer*)s->internal_buffer)[s->internal_buffer_count];
259
    picture_number= &(((InternalBuffer*)s->internal_buffer)[INTERNAL_BUFFER_SIZE-1]).last_pic_num; //FIXME ugly hack
260
    (*picture_number)++;
261

    
262
    if(buf->base[0] && (buf->width != w || buf->height != h || buf->pix_fmt != s->pix_fmt)){
263
        for(i=0; i<4; i++){
264
            av_freep(&buf->base[i]);
265
            buf->data[i]= NULL;
266
        }
267
    }
268

    
269
    if(buf->base[0]){
270
        pic->age= *picture_number - buf->last_pic_num;
271
        buf->last_pic_num= *picture_number;
272
    }else{
273
        int h_chroma_shift, v_chroma_shift;
274
        int pixel_size, size[4];
275
        AVPicture picture;
276

    
277
        avcodec_get_chroma_sub_sample(s->pix_fmt, &h_chroma_shift, &v_chroma_shift);
278

    
279
        avcodec_align_dimensions(s, &w, &h);
280

    
281
        if(!(s->flags&CODEC_FLAG_EMU_EDGE)){
282
            w+= EDGE_WIDTH*2;
283
            h+= EDGE_WIDTH*2;
284
        }
285
        avcodec_align_dimensions(s, &w, &h);
286

    
287
        avpicture_fill(&picture, NULL, s->pix_fmt, w, h);
288
        pixel_size= picture.linesize[0]*8 / w;
289
//av_log(NULL, AV_LOG_ERROR, "%d %d %d %d\n", (int)picture.data[1], w, h, s->pix_fmt);
290
        assert(pixel_size>=1);
291
            //FIXME next ensures that linesize= 2^x uvlinesize, that is needed because some MC code assumes it
292
        if(pixel_size == 3*8)
293
            w= ALIGN(w, STRIDE_ALIGN<<h_chroma_shift);
294
        else
295
            w= ALIGN(pixel_size*w, STRIDE_ALIGN<<(h_chroma_shift+3)) / pixel_size;
296
        size[1] = avpicture_fill(&picture, NULL, s->pix_fmt, w, h);
297
        size[0] = picture.linesize[0] * h;
298
        size[1] -= size[0];
299
        size[2] = size[3] = 0;
300
        if(picture.data[2])
301
            size[1]= size[2]= size[1]/2;
302
        if(picture.data[3])
303
            size[3] = picture.linesize[3] * h;
304

    
305
        buf->last_pic_num= -256*256*256*64;
306
        memset(buf->base, 0, sizeof(buf->base));
307
        memset(buf->data, 0, sizeof(buf->data));
308

    
309
        for(i=0; i<4 && size[i]; i++){
310
            const int h_shift= i==0 ? 0 : h_chroma_shift;
311
            const int v_shift= i==0 ? 0 : v_chroma_shift;
312

    
313
            buf->linesize[i]= picture.linesize[i];
314

    
315
            buf->base[i]= av_malloc(size[i]+16); //FIXME 16
316
            if(buf->base[i]==NULL) return -1;
317
            memset(buf->base[i], 128, size[i]);
318

    
319
            // no edge if EDEG EMU or not planar YUV, we check for PAL8 redundantly to protect against a exploitable bug regression ...
320
            if((s->flags&CODEC_FLAG_EMU_EDGE) || (s->pix_fmt == PIX_FMT_PAL8) || !size[2])
321
                buf->data[i] = buf->base[i];
322
            else
323
                buf->data[i] = buf->base[i] + ALIGN((buf->linesize[i]*EDGE_WIDTH>>v_shift) + (EDGE_WIDTH>>h_shift), STRIDE_ALIGN);
324
        }
325
        buf->width  = s->width;
326
        buf->height = s->height;
327
        buf->pix_fmt= s->pix_fmt;
328
        pic->age= 256*256*256*64;
329
    }
330
    pic->type= FF_BUFFER_TYPE_INTERNAL;
331

    
332
    for(i=0; i<4; i++){
333
        pic->base[i]= buf->base[i];
334
        pic->data[i]= buf->data[i];
335
        pic->linesize[i]= buf->linesize[i];
336
    }
337
    s->internal_buffer_count++;
338

    
339
    return 0;
340
}
341

    
342
void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic){
343
    int i;
344
    InternalBuffer *buf, *last;
345

    
346
    assert(pic->type==FF_BUFFER_TYPE_INTERNAL);
347
    assert(s->internal_buffer_count);
348

    
349
    buf = NULL; /* avoids warning */
350
    for(i=0; i<s->internal_buffer_count; i++){ //just 3-5 checks so is not worth to optimize
351
        buf= &((InternalBuffer*)s->internal_buffer)[i];
352
        if(buf->data[0] == pic->data[0])
353
            break;
354
    }
355
    assert(i < s->internal_buffer_count);
356
    s->internal_buffer_count--;
357
    last = &((InternalBuffer*)s->internal_buffer)[s->internal_buffer_count];
358

    
359
    FFSWAP(InternalBuffer, *buf, *last);
360

    
361
    for(i=0; i<4; i++){
362
        pic->data[i]=NULL;
363
//        pic->base[i]=NULL;
364
    }
365
//printf("R%X\n", pic->opaque);
366
}
367

    
368
int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic){
369
    AVFrame temp_pic;
370
    int i;
371

    
372
    /* If no picture return a new buffer */
373
    if(pic->data[0] == NULL) {
374
        /* We will copy from buffer, so must be readable */
375
        pic->buffer_hints |= FF_BUFFER_HINTS_READABLE;
376
        return s->get_buffer(s, pic);
377
    }
378

    
379
    /* If internal buffer type return the same buffer */
380
    if(pic->type == FF_BUFFER_TYPE_INTERNAL)
381
        return 0;
382

    
383
    /*
384
     * Not internal type and reget_buffer not overridden, emulate cr buffer
385
     */
386
    temp_pic = *pic;
387
    for(i = 0; i < 4; i++)
388
        pic->data[i] = pic->base[i] = NULL;
389
    pic->opaque = NULL;
390
    /* Allocate new frame */
391
    if (s->get_buffer(s, pic))
392
        return -1;
393
    /* Copy image data from old buffer to new buffer */
394
    av_picture_copy((AVPicture*)pic, (AVPicture*)&temp_pic, s->pix_fmt, s->width,
395
             s->height);
396
    s->release_buffer(s, &temp_pic); // Release old frame
397
    return 0;
398
}
399

    
400
int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2),void **arg, int *ret, int count){
401
    int i;
402

    
403
    for(i=0; i<count; i++){
404
        int r= func(c, arg[i]);
405
        if(ret) ret[i]= r;
406
    }
407
    return 0;
408
}
409

    
410
enum PixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum PixelFormat * fmt){
411
    return fmt[0];
412
}
413

    
414
static const char* context_to_name(void* ptr) {
415
    AVCodecContext *avc= ptr;
416

    
417
    if(avc && avc->codec && avc->codec->name)
418
        return avc->codec->name;
419
    else
420
        return "NULL";
421
}
422

    
423
#define OFFSET(x) offsetof(AVCodecContext,x)
424
#define DEFAULT 0 //should be NAN but it does not work as it is not a constant in glibc as required by ANSI/ISO C
425
//these names are too long to be readable
426
#define V AV_OPT_FLAG_VIDEO_PARAM
427
#define A AV_OPT_FLAG_AUDIO_PARAM
428
#define S AV_OPT_FLAG_SUBTITLE_PARAM
429
#define E AV_OPT_FLAG_ENCODING_PARAM
430
#define D AV_OPT_FLAG_DECODING_PARAM
431

    
432
#define AV_CODEC_DEFAULT_BITRATE 200*1000
433

    
434
static const AVOption options[]={
435
{"b", "set bitrate (in bits/s)", OFFSET(bit_rate), FF_OPT_TYPE_INT, AV_CODEC_DEFAULT_BITRATE, INT_MIN, INT_MAX, V|E},
436
{"ab", "set bitrate (in bits/s)", OFFSET(bit_rate), FF_OPT_TYPE_INT, 64*1000, INT_MIN, INT_MAX, A|E},
437
{"bt", "set video bitrate tolerance (in bits/s)", OFFSET(bit_rate_tolerance), FF_OPT_TYPE_INT, AV_CODEC_DEFAULT_BITRATE*20, 1, INT_MAX, V|E},
438
{"flags", NULL, OFFSET(flags), FF_OPT_TYPE_FLAGS, DEFAULT, INT_MIN, INT_MAX, V|A|E|D, "flags"},
439
{"mv4", "use four motion vector by macroblock (mpeg4)", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_4MV, INT_MIN, INT_MAX, V|E, "flags"},
440
{"obmc", "use overlapped block motion compensation (h263+)", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_OBMC, INT_MIN, INT_MAX, V|E, "flags"},
441
{"qpel", "use 1/4 pel motion compensation", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_QPEL, INT_MIN, INT_MAX, V|E, "flags"},
442
{"loop", "use loop filter", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_LOOP_FILTER, INT_MIN, INT_MAX, V|E, "flags"},
443
{"qscale", "use fixed qscale", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_QSCALE, INT_MIN, INT_MAX, 0, "flags"},
444
{"gmc", "use gmc", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_GMC, INT_MIN, INT_MAX, V|E, "flags"},
445
{"mv0", "always try a mb with mv=<0,0>", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_MV0, INT_MIN, INT_MAX, V|E, "flags"},
446
{"part", "use data partitioning", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_PART, INT_MIN, INT_MAX, V|E, "flags"},
447
{"input_preserved", NULL, 0, FF_OPT_TYPE_CONST, CODEC_FLAG_INPUT_PRESERVED, INT_MIN, INT_MAX, 0, "flags"},
448
{"pass1", "use internal 2pass ratecontrol in first  pass mode", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_PASS1, INT_MIN, INT_MAX, 0, "flags"},
449
{"pass2", "use internal 2pass ratecontrol in second pass mode", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_PASS2, INT_MIN, INT_MAX, 0, "flags"},
450
{"extern_huff", "use external huffman table (for mjpeg)", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_EXTERN_HUFF, INT_MIN, INT_MAX, 0, "flags"},
451
{"gray", "only decode/encode grayscale", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_GRAY, INT_MIN, INT_MAX, V|E|D, "flags"},
452
{"emu_edge", "don't draw edges", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_EMU_EDGE, INT_MIN, INT_MAX, 0, "flags"},
453
{"psnr", "error[?] variables will be set during encoding", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_PSNR, INT_MIN, INT_MAX, V|E, "flags"},
454
{"truncated", NULL, 0, FF_OPT_TYPE_CONST, CODEC_FLAG_TRUNCATED, INT_MIN, INT_MAX, 0, "flags"},
455
{"naq", "normalize adaptive quantization", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_NORMALIZE_AQP, INT_MIN, INT_MAX, V|E, "flags"},
456
{"ildct", "use interlaced dct", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_INTERLACED_DCT, INT_MIN, INT_MAX, V|E, "flags"},
457
{"low_delay", "force low delay", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_LOW_DELAY, INT_MIN, INT_MAX, V|D|E, "flags"},
458
{"alt", "enable alternate scantable (mpeg2/mpeg4)", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_ALT_SCAN, INT_MIN, INT_MAX, V|E, "flags"},
459
{"trell", "use trellis quantization", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_TRELLIS_QUANT, INT_MIN, INT_MAX, V|E, "flags"},
460
{"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"},
461
{"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"},
462
{"aic", "h263 advanced intra coding / mpeg4 ac prediction", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_AC_PRED, INT_MIN, INT_MAX, V|E, "flags"},
463
{"umv", "use unlimited motion vectors", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_H263P_UMV, INT_MIN, INT_MAX, V|E, "flags"},
464
{"cbp", "use rate distortion optimization for cbp", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_CBP_RD, INT_MIN, INT_MAX, V|E, "flags"},
465
{"qprd", "use rate distortion optimization for qp selection", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_QP_RD, INT_MIN, INT_MAX, V|E, "flags"},
466
{"aiv", "h263 alternative inter vlc", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_H263P_AIV, INT_MIN, INT_MAX, V|E, "flags"},
467
{"slice", NULL, 0, FF_OPT_TYPE_CONST, CODEC_FLAG_H263P_SLICE_STRUCT, INT_MIN, INT_MAX, V|E, "flags"},
468
{"ilme", "interlaced motion estimation", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_INTERLACED_ME, INT_MIN, INT_MAX, V|E, "flags"},
469
{"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"},
470
{"cgop", "closed gop", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_CLOSED_GOP, INT_MIN, INT_MAX, V|E, "flags"},
471
{"fast", "allow non spec compliant speedup tricks", 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_FAST, INT_MIN, INT_MAX, V|E, "flags2"},
472
{"sgop", "strictly enforce gop size", 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_STRICT_GOP, INT_MIN, INT_MAX, V|E, "flags2"},
473
{"noout", "skip bitstream encoding", 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_NO_OUTPUT, INT_MIN, INT_MAX, V|E, "flags2"},
474
{"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"},
475
{"sub_id", NULL, OFFSET(sub_id), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
476
{"me_method", "set motion estimation method", OFFSET(me_method), FF_OPT_TYPE_INT, ME_EPZS, INT_MIN, INT_MAX, V|E, "me_method"},
477
#if LIBAVCODEC_VERSION_INT < ((52<<16)+(0<<8)+0)
478
{"me", "set motion estimation method (deprecated, use me_method instead)", OFFSET(me_method), FF_OPT_TYPE_INT, ME_EPZS, INT_MIN, INT_MAX, V|E, "me_method"},
479
#endif
480
{"zero", "zero motion estimation (fastest)", 0, FF_OPT_TYPE_CONST, ME_ZERO, INT_MIN, INT_MAX, V|E, "me_method" },
481
{"full", "full motion estimation (slowest)", 0, FF_OPT_TYPE_CONST, ME_FULL, INT_MIN, INT_MAX, V|E, "me_method" },
482
{"epzs", "EPZS motion estimation (default)", 0, FF_OPT_TYPE_CONST, ME_EPZS, INT_MIN, INT_MAX, V|E, "me_method" },
483
{"log", "log motion estimation", 0, FF_OPT_TYPE_CONST, ME_LOG, INT_MIN, INT_MAX, V|E, "me_method" },
484
{"phods", "phods motion estimation", 0, FF_OPT_TYPE_CONST, ME_PHODS, INT_MIN, INT_MAX, V|E, "me_method" },
485
{"x1", "X1 motion estimation", 0, FF_OPT_TYPE_CONST, ME_X1, INT_MIN, INT_MAX, V|E, "me_method" },
486
{"hex", "hex motion estimation", 0, FF_OPT_TYPE_CONST, ME_HEX, INT_MIN, INT_MAX, V|E, "me_method" },
487
{"umh", "umh motion estimation", 0, FF_OPT_TYPE_CONST, ME_UMH, INT_MIN, INT_MAX, V|E, "me_method" },
488
{"iter", "iter motion estimation", 0, FF_OPT_TYPE_CONST, ME_ITER, INT_MIN, INT_MAX, V|E, "me_method" },
489
{"extradata_size", NULL, OFFSET(extradata_size), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
490
{"time_base", NULL, OFFSET(time_base), FF_OPT_TYPE_RATIONAL, DEFAULT, INT_MIN, INT_MAX},
491
{"g", "set the group of picture size", OFFSET(gop_size), FF_OPT_TYPE_INT, 12, INT_MIN, INT_MAX, V|E},
492
{"rate_emu", "frame rate emulation", OFFSET(rate_emu), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
493
{"ar", "set audio sampling rate (in Hz)", OFFSET(sample_rate), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
494
{"ac", "set number of audio channels", OFFSET(channels), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
495
{"cutoff", "set cutoff bandwidth", OFFSET(cutoff), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, A|E},
496
{"frame_size", NULL, OFFSET(frame_size), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, A|E},
497
{"frame_number", NULL, OFFSET(frame_number), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
498
{"real_pict_num", NULL, OFFSET(real_pict_num), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
499
{"delay", NULL, OFFSET(delay), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
500
{"qcomp", "video quantizer scale compression (VBR)", OFFSET(qcompress), FF_OPT_TYPE_FLOAT, 0.5, FLT_MIN, FLT_MAX, V|E},
501
{"qblur", "video quantizer scale blur (VBR)", OFFSET(qblur), FF_OPT_TYPE_FLOAT, 0.5, FLT_MIN, FLT_MAX, V|E},
502
{"qmin", "min video quantizer scale (VBR)", OFFSET(qmin), FF_OPT_TYPE_INT, 2, 1, 51, V|E},
503
{"qmax", "max video quantizer scale (VBR)", OFFSET(qmax), FF_OPT_TYPE_INT, 31, 1, 51, V|E},
504
{"qdiff", "max difference between the quantizer scale (VBR)", OFFSET(max_qdiff), FF_OPT_TYPE_INT, 3, INT_MIN, INT_MAX, V|E},
505
{"bf", "use 'frames' B frames", OFFSET(max_b_frames), FF_OPT_TYPE_INT, DEFAULT, 0, FF_MAX_B_FRAMES, V|E},
506
{"b_qfactor", "qp factor between p and b frames", OFFSET(b_quant_factor), FF_OPT_TYPE_FLOAT, 1.25, FLT_MIN, FLT_MAX, V|E},
507
{"rc_strategy", "ratecontrol method", OFFSET(rc_strategy), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
508
{"b_strategy", "strategy to choose between I/P/B-frames", OFFSET(b_frame_strategy), FF_OPT_TYPE_INT, 0, INT_MIN, INT_MAX, V|E},
509
{"hurry_up", NULL, OFFSET(hurry_up), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|D},
510
#if LIBAVCODEC_VERSION_INT < ((52<<16)+(0<<8)+0)
511
{"rtp_mode", NULL, OFFSET(rtp_mode), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
512
#endif
513
{"ps", "rtp payload size in bits", OFFSET(rtp_payload_size), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
514
{"mv_bits", NULL, OFFSET(mv_bits), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
515
{"header_bits", NULL, OFFSET(header_bits), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
516
{"i_tex_bits", NULL, OFFSET(i_tex_bits), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
517
{"p_tex_bits", NULL, OFFSET(p_tex_bits), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
518
{"i_count", NULL, OFFSET(i_count), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
519
{"p_count", NULL, OFFSET(p_count), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
520
{"skip_count", NULL, OFFSET(skip_count), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
521
{"misc_bits", NULL, OFFSET(misc_bits), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
522
{"frame_bits", NULL, OFFSET(frame_bits), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
523
{"codec_tag", NULL, OFFSET(codec_tag), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
524
{"bug", "workaround not auto detected encoder bugs", OFFSET(workaround_bugs), FF_OPT_TYPE_FLAGS, FF_BUG_AUTODETECT, INT_MIN, INT_MAX, V|D, "bug"},
525
{"autodetect", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_AUTODETECT, INT_MIN, INT_MAX, V|D, "bug"},
526
{"old_msmpeg4", "some old lavc generated msmpeg4v3 files (no autodetection)", 0, FF_OPT_TYPE_CONST, FF_BUG_OLD_MSMPEG4, INT_MIN, INT_MAX, V|D, "bug"},
527
{"xvid_ilace", "Xvid interlacing bug (autodetected if fourcc==XVIX)", 0, FF_OPT_TYPE_CONST, FF_BUG_XVID_ILACE, INT_MIN, INT_MAX, V|D, "bug"},
528
{"ump4", "(autodetected if fourcc==UMP4)", 0, FF_OPT_TYPE_CONST, FF_BUG_UMP4, INT_MIN, INT_MAX, V|D, "bug"},
529
{"no_padding", "padding bug (autodetected)", 0, FF_OPT_TYPE_CONST, FF_BUG_NO_PADDING, INT_MIN, INT_MAX, V|D, "bug"},
530
{"amv", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_AMV, INT_MIN, INT_MAX, V|D, "bug"},
531
{"ac_vlc", "illegal vlc bug (autodetected per fourcc)", 0, FF_OPT_TYPE_CONST, FF_BUG_AC_VLC, INT_MIN, INT_MAX, V|D, "bug"},
532
{"qpel_chroma", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_QPEL_CHROMA, INT_MIN, INT_MAX, V|D, "bug"},
533
{"std_qpel", "old standard qpel (autodetected per fourcc/version)", 0, FF_OPT_TYPE_CONST, FF_BUG_STD_QPEL, INT_MIN, INT_MAX, V|D, "bug"},
534
{"qpel_chroma2", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_QPEL_CHROMA2, INT_MIN, INT_MAX, V|D, "bug"},
535
{"direct_blocksize", "direct-qpel-blocksize bug (autodetected per fourcc/version)", 0, FF_OPT_TYPE_CONST, FF_BUG_DIRECT_BLOCKSIZE, INT_MIN, INT_MAX, V|D, "bug"},
536
{"edge", "edge padding bug (autodetected per fourcc/version)", 0, FF_OPT_TYPE_CONST, FF_BUG_EDGE, INT_MIN, INT_MAX, V|D, "bug"},
537
{"hpel_chroma", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_HPEL_CHROMA, INT_MIN, INT_MAX, V|D, "bug"},
538
{"dc_clip", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_DC_CLIP, INT_MIN, INT_MAX, V|D, "bug"},
539
{"ms", "workaround various bugs in microsofts broken decoders", 0, FF_OPT_TYPE_CONST, FF_BUG_MS, INT_MIN, INT_MAX, V|D, "bug"},
540
{"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},
541
{"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},
542
{"strict", "how strictly to follow the standards", OFFSET(strict_std_compliance), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, A|V|D, "strict"},
543
{"very", "strictly conform to a older more strict version of the spec or reference software", 0, FF_OPT_TYPE_CONST, FF_COMPLIANCE_VERY_STRICT, INT_MIN, INT_MAX, V|E, "strict"},
544
{"strict", "strictly conform to all the things in the spec no matter what consequences", 0, FF_OPT_TYPE_CONST, FF_COMPLIANCE_STRICT, INT_MIN, INT_MAX, V|E, "strict"},
545
{"normal", NULL, 0, FF_OPT_TYPE_CONST, FF_COMPLIANCE_NORMAL, INT_MIN, INT_MAX, V|E, "strict"},
546
{"inofficial", "allow inofficial extensions", 0, FF_OPT_TYPE_CONST, FF_COMPLIANCE_INOFFICIAL, INT_MIN, INT_MAX, V|E, "strict"},
547
{"experimental", "allow non standardized experimental things", 0, FF_OPT_TYPE_CONST, FF_COMPLIANCE_EXPERIMENTAL, INT_MIN, INT_MAX, V|E, "strict"},
548
{"b_qoffset", "qp offset between p and b frames", OFFSET(b_quant_offset), FF_OPT_TYPE_FLOAT, 1.25, FLT_MIN, FLT_MAX, V|E},
549
{"er", "set error resilience strategy", OFFSET(error_resilience), FF_OPT_TYPE_INT, FF_ER_CAREFUL, INT_MIN, INT_MAX, A|V|D, "er"},
550
{"careful", NULL, 0, FF_OPT_TYPE_CONST, FF_ER_CAREFUL, INT_MIN, INT_MAX, V|D, "er"},
551
{"compliant", NULL, 0, FF_OPT_TYPE_CONST, FF_ER_COMPLIANT, INT_MIN, INT_MAX, V|D, "er"},
552
{"aggressive", NULL, 0, FF_OPT_TYPE_CONST, FF_ER_AGGRESSIVE, INT_MIN, INT_MAX, V|D, "er"},
553
{"very_aggressive", NULL, 0, FF_OPT_TYPE_CONST, FF_ER_VERY_AGGRESSIVE, INT_MIN, INT_MAX, V|D, "er"},
554
{"has_b_frames", NULL, OFFSET(has_b_frames), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
555
{"block_align", NULL, OFFSET(block_align), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
556
{"parse_only", NULL, OFFSET(parse_only), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
557
{"mpeg_quant", "use MPEG quantizers instead of H.263", OFFSET(mpeg_quant), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
558
{"stats_out", NULL, OFFSET(stats_out), FF_OPT_TYPE_STRING, DEFAULT, CHAR_MIN, CHAR_MAX},
559
{"stats_in", NULL, OFFSET(stats_in), FF_OPT_TYPE_STRING, DEFAULT, CHAR_MIN, CHAR_MAX},
560
{"qsquish", "how to keep quantizer between qmin and qmax (0 = clip, 1 = use differentiable function)", OFFSET(rc_qsquish), FF_OPT_TYPE_FLOAT, DEFAULT, 0, 99, V|E},
561
{"rc_qmod_amp", "experimental quantizer modulation", OFFSET(rc_qmod_amp), FF_OPT_TYPE_FLOAT, DEFAULT, -FLT_MAX, FLT_MAX, V|E},
562
{"rc_qmod_freq", "experimental quantizer modulation", OFFSET(rc_qmod_freq), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
563
{"rc_override_count", NULL, OFFSET(rc_override_count), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
564
{"rc_eq", "set rate control equation", OFFSET(rc_eq), FF_OPT_TYPE_STRING, DEFAULT, CHAR_MIN, CHAR_MAX, V|E},
565
{"maxrate", "set max video bitrate tolerance (in bits/s)", OFFSET(rc_max_rate), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
566
{"minrate", "set min video bitrate tolerance (in bits/s)", OFFSET(rc_min_rate), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
567
{"bufsize", "set ratecontrol buffer size (in bits)", OFFSET(rc_buffer_size), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, A|V|E},
568
{"rc_buf_aggressivity", "currently useless", OFFSET(rc_buffer_aggressivity), FF_OPT_TYPE_FLOAT, 1.0, FLT_MIN, FLT_MAX, V|E},
569
{"i_qfactor", "qp factor between p and i frames", OFFSET(i_quant_factor), FF_OPT_TYPE_FLOAT, -0.8, -FLT_MAX, FLT_MAX, V|E},
570
{"i_qoffset", "qp offset between p and i frames", OFFSET(i_quant_offset), FF_OPT_TYPE_FLOAT, 0.0, -FLT_MAX, FLT_MAX, V|E},
571
{"rc_init_cplx", "initial complexity for 1-pass encoding", OFFSET(rc_initial_cplx), FF_OPT_TYPE_FLOAT, DEFAULT, -FLT_MAX, FLT_MAX, V|E},
572
{"dct", "DCT algorithm", OFFSET(dct_algo), FF_OPT_TYPE_INT, DEFAULT, 0, INT_MAX, V|E, "dct"},
573
{"auto", "autoselect a good one (default)", 0, FF_OPT_TYPE_CONST, FF_DCT_AUTO, INT_MIN, INT_MAX, V|E, "dct"},
574
{"fastint", "fast integer", 0, FF_OPT_TYPE_CONST, FF_DCT_FASTINT, INT_MIN, INT_MAX, V|E, "dct"},
575
{"int", "accurate integer", 0, FF_OPT_TYPE_CONST, FF_DCT_INT, INT_MIN, INT_MAX, V|E, "dct"},
576
{"mmx", NULL, 0, FF_OPT_TYPE_CONST, FF_DCT_MMX, INT_MIN, INT_MAX, V|E, "dct"},
577
{"mlib", NULL, 0, FF_OPT_TYPE_CONST, FF_DCT_MLIB, INT_MIN, INT_MAX, V|E, "dct"},
578
{"altivec", NULL, 0, FF_OPT_TYPE_CONST, FF_DCT_ALTIVEC, INT_MIN, INT_MAX, V|E, "dct"},
579
{"faan", "floating point AAN DCT", 0, FF_OPT_TYPE_CONST, FF_DCT_FAAN, INT_MIN, INT_MAX, V|E, "dct"},
580
{"lumi_mask", "compresses bright areas stronger than medium ones", OFFSET(lumi_masking), FF_OPT_TYPE_FLOAT, 0, -FLT_MAX, FLT_MAX, V|E},
581
{"tcplx_mask", "temporal complexity masking", OFFSET(temporal_cplx_masking), FF_OPT_TYPE_FLOAT, 0, -FLT_MAX, FLT_MAX, V|E},
582
{"scplx_mask", "spatial complexity masking", OFFSET(spatial_cplx_masking), FF_OPT_TYPE_FLOAT, 0, -FLT_MAX, FLT_MAX, V|E},
583
{"p_mask", "inter masking", OFFSET(p_masking), FF_OPT_TYPE_FLOAT, 0, -FLT_MAX, FLT_MAX, V|E},
584
{"dark_mask", "compresses dark areas stronger than medium ones", OFFSET(dark_masking), FF_OPT_TYPE_FLOAT, 0, -FLT_MAX, FLT_MAX, V|E},
585
{"unused", NULL, OFFSET(unused), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
586
{"idct", "select IDCT implementation", OFFSET(idct_algo), FF_OPT_TYPE_INT, DEFAULT, 0, INT_MAX, V|E|D, "idct"},
587
{"auto", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_AUTO, INT_MIN, INT_MAX, V|E|D, "idct"},
588
{"int", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_INT, INT_MIN, INT_MAX, V|E|D, "idct"},
589
{"simple", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_SIMPLE, INT_MIN, INT_MAX, V|E|D, "idct"},
590
{"simplemmx", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_SIMPLEMMX, INT_MIN, INT_MAX, V|E|D, "idct"},
591
{"libmpeg2mmx", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_LIBMPEG2MMX, INT_MIN, INT_MAX, V|E|D, "idct"},
592
{"ps2", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_PS2, INT_MIN, INT_MAX, V|E|D, "idct"},
593
{"mlib", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_MLIB, INT_MIN, INT_MAX, V|E|D, "idct"},
594
{"arm", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_ARM, INT_MIN, INT_MAX, V|E|D, "idct"},
595
{"altivec", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_ALTIVEC, INT_MIN, INT_MAX, V|E|D, "idct"},
596
{"sh4", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_SH4, INT_MIN, INT_MAX, V|E|D, "idct"},
597
{"simplearm", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_SIMPLEARM, INT_MIN, INT_MAX, V|E|D, "idct"},
598
{"simplearmv5te", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_SIMPLEARMV5TE, INT_MIN, INT_MAX, V|E|D, "idct"},
599
{"h264", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_H264, INT_MIN, INT_MAX, V|E|D, "idct"},
600
{"vp3", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_VP3, INT_MIN, INT_MAX, V|E|D, "idct"},
601
{"ipp", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_IPP, INT_MIN, INT_MAX, V|E|D, "idct"},
602
{"xvidmmx", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_XVIDMMX, INT_MIN, INT_MAX, V|E|D, "idct"},
603
{"slice_count", NULL, OFFSET(slice_count), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
604
{"ec", "set error concealment strategy", OFFSET(error_concealment), FF_OPT_TYPE_FLAGS, 3, INT_MIN, INT_MAX, V|D, "ec"},
605
{"guess_mvs", "iterative motion vector (MV) search (slow)", 0, FF_OPT_TYPE_CONST, FF_EC_GUESS_MVS, INT_MIN, INT_MAX, V|D, "ec"},
606
{"deblock", "use strong deblock filter for damaged MBs", 0, FF_OPT_TYPE_CONST, FF_EC_DEBLOCK, INT_MIN, INT_MAX, V|D, "ec"},
607
{"bits_per_sample", NULL, OFFSET(bits_per_sample), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
608
{"pred", "prediction method", OFFSET(prediction_method), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E, "pred"},
609
{"left", NULL, 0, FF_OPT_TYPE_CONST, FF_PRED_LEFT, INT_MIN, INT_MAX, V|E, "pred"},
610
{"plane", NULL, 0, FF_OPT_TYPE_CONST, FF_PRED_PLANE, INT_MIN, INT_MAX, V|E, "pred"},
611
{"median", NULL, 0, FF_OPT_TYPE_CONST, FF_PRED_MEDIAN, INT_MIN, INT_MAX, V|E, "pred"},
612
{"aspect", "sample aspect ratio", OFFSET(sample_aspect_ratio), FF_OPT_TYPE_RATIONAL, DEFAULT, 0, 10, V|E},
613
{"debug", "print specific debug info", OFFSET(debug), FF_OPT_TYPE_FLAGS, DEFAULT, 0, INT_MAX, V|A|S|E|D, "debug"},
614
{"pict", "picture info", 0, FF_OPT_TYPE_CONST, FF_DEBUG_PICT_INFO, INT_MIN, INT_MAX, V|D, "debug"},
615
{"rc", "rate control", 0, FF_OPT_TYPE_CONST, FF_DEBUG_RC, INT_MIN, INT_MAX, V|E, "debug"},
616
{"bitstream", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_BITSTREAM, INT_MIN, INT_MAX, V|D, "debug"},
617
{"mb_type", "macroblock (MB) type", 0, FF_OPT_TYPE_CONST, FF_DEBUG_MB_TYPE, INT_MIN, INT_MAX, V|D, "debug"},
618
{"qp", "per-block quantization parameter (QP)", 0, FF_OPT_TYPE_CONST, FF_DEBUG_QP, INT_MIN, INT_MAX, V|D, "debug"},
619
{"mv", "motion vector", 0, FF_OPT_TYPE_CONST, FF_DEBUG_MV, INT_MIN, INT_MAX, V|D, "debug"},
620
{"dct_coeff", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_DCT_COEFF, INT_MIN, INT_MAX, V|D, "debug"},
621
{"skip", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_SKIP, INT_MIN, INT_MAX, V|D, "debug"},
622
{"startcode", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_STARTCODE, INT_MIN, INT_MAX, V|D, "debug"},
623
{"pts", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_PTS, INT_MIN, INT_MAX, V|D, "debug"},
624
{"er", "error resilience", 0, FF_OPT_TYPE_CONST, FF_DEBUG_ER, INT_MIN, INT_MAX, V|D, "debug"},
625
{"mmco", "memory management control operations (H.264)", 0, FF_OPT_TYPE_CONST, FF_DEBUG_MMCO, INT_MIN, INT_MAX, V|D, "debug"},
626
{"bugs", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_BUGS, INT_MIN, INT_MAX, V|D, "debug"},
627
{"vis_qp", "visualize quantization parameter (QP), lower QP are tinted greener", 0, FF_OPT_TYPE_CONST, FF_DEBUG_VIS_QP, INT_MIN, INT_MAX, V|D, "debug"},
628
{"vis_mb_type", "visualize block types", 0, FF_OPT_TYPE_CONST, FF_DEBUG_VIS_MB_TYPE, INT_MIN, INT_MAX, V|D, "debug"},
629
{"vismv", "visualize motion vectors (MVs)", OFFSET(debug_mv), FF_OPT_TYPE_INT, DEFAULT, 0, INT_MAX, V|D, "debug_mv"},
630
{"pf", "forward predicted MVs of P-frames", 0, FF_OPT_TYPE_CONST, FF_DEBUG_VIS_MV_P_FOR, INT_MIN, INT_MAX, V|D, "debug_mv"},
631
{"bf", "forward predicted MVs of B-frames", 0, FF_OPT_TYPE_CONST, FF_DEBUG_VIS_MV_B_FOR, INT_MIN, INT_MAX, V|D, "debug_mv"},
632
{"bb", "backward predicted MVs of B-frames", 0, FF_OPT_TYPE_CONST, FF_DEBUG_VIS_MV_B_BACK, INT_MIN, INT_MAX, V|D, "debug_mv"},
633
{"mb_qmin", "obsolete, use qmin", OFFSET(mb_qmin), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
634
{"mb_qmax", "obsolete, use qmax", OFFSET(mb_qmax), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
635
{"cmp", "full pel me compare function", OFFSET(me_cmp), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E, "cmp_func"},
636
{"subcmp", "sub pel me compare function", OFFSET(me_sub_cmp), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E, "cmp_func"},
637
{"mbcmp", "macroblock compare function", OFFSET(mb_cmp), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E, "cmp_func"},
638
{"ildctcmp", "interlaced dct compare function", OFFSET(ildct_cmp), FF_OPT_TYPE_INT, FF_CMP_VSAD, INT_MIN, INT_MAX, V|E, "cmp_func"},
639
{"dia_size", "diamond type & size for motion estimation", OFFSET(dia_size), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
640
{"last_pred", "amount of motion predictors from the previous frame", OFFSET(last_predictor_count), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
641
{"preme", "pre motion estimation", OFFSET(pre_me), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
642
{"precmp", "pre motion estimation compare function", OFFSET(me_pre_cmp), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E, "cmp_func"},
643
{"sad", "sum of absolute differences, fast (default)", 0, FF_OPT_TYPE_CONST, FF_CMP_SAD, INT_MIN, INT_MAX, V|E, "cmp_func"},
644
{"sse", "sum of squared errors", 0, FF_OPT_TYPE_CONST, FF_CMP_SSE, INT_MIN, INT_MAX, V|E, "cmp_func"},
645
{"satd", "sum of absolute Hadamard transformed differences", 0, FF_OPT_TYPE_CONST, FF_CMP_SATD, INT_MIN, INT_MAX, V|E, "cmp_func"},
646
{"dct", "sum of absolute DCT transformed differences", 0, FF_OPT_TYPE_CONST, FF_CMP_DCT, INT_MIN, INT_MAX, V|E, "cmp_func"},
647
{"psnr", "sum of squared quantization errors (avoid, low quality)", 0, FF_OPT_TYPE_CONST, FF_CMP_PSNR, INT_MIN, INT_MAX, V|E, "cmp_func"},
648
{"bit", "number of bits needed for the block", 0, FF_OPT_TYPE_CONST, FF_CMP_BIT, INT_MIN, INT_MAX, V|E, "cmp_func"},
649
{"rd", "rate distortion optimal, slow", 0, FF_OPT_TYPE_CONST, FF_CMP_RD, INT_MIN, INT_MAX, V|E, "cmp_func"},
650
{"zero", "0", 0, FF_OPT_TYPE_CONST, FF_CMP_ZERO, INT_MIN, INT_MAX, V|E, "cmp_func"},
651
{"vsad", "sum of absolute vertical differences", 0, FF_OPT_TYPE_CONST, FF_CMP_VSAD, INT_MIN, INT_MAX, V|E, "cmp_func"},
652
{"vsse","sum of squared vertical differences", 0, FF_OPT_TYPE_CONST, FF_CMP_VSSE, INT_MIN, INT_MAX, V|E, "cmp_func"},
653
{"nsse", "noise preserving sum of squared differences", 0, FF_OPT_TYPE_CONST, FF_CMP_NSSE, INT_MIN, INT_MAX, V|E, "cmp_func"},
654
#ifdef CONFIG_SNOW_ENCODER
655
{"w53", "5/3 wavelet, only used in snow", 0, FF_OPT_TYPE_CONST, FF_CMP_W53, INT_MIN, INT_MAX, V|E, "cmp_func"},
656
{"w97", "9/7 wavelet, only used in snow", 0, FF_OPT_TYPE_CONST, FF_CMP_W97, INT_MIN, INT_MAX, V|E, "cmp_func"},
657
#endif
658
{"dctmax", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_DCTMAX, INT_MIN, INT_MAX, V|E, "cmp_func"},
659
{"chroma", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_CHROMA, INT_MIN, INT_MAX, V|E, "cmp_func"},
660
{"pre_dia_size", "diamond type & size for motion estimation pre-pass", OFFSET(pre_dia_size), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
661
{"subq", "sub pel motion estimation quality", OFFSET(me_subpel_quality), FF_OPT_TYPE_INT, 8, INT_MIN, INT_MAX, V|E},
662
{"dtg_active_format", NULL, OFFSET(dtg_active_format), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
663
{"me_range", "limit motion vectors range (1023 for DivX player)", OFFSET(me_range), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
664
{"ibias", "intra quant bias", OFFSET(intra_quant_bias), FF_OPT_TYPE_INT, FF_DEFAULT_QUANT_BIAS, INT_MIN, INT_MAX, V|E},
665
{"pbias", "inter quant bias", OFFSET(inter_quant_bias), FF_OPT_TYPE_INT, FF_DEFAULT_QUANT_BIAS, INT_MIN, INT_MAX, V|E},
666
{"color_table_id", NULL, OFFSET(color_table_id), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
667
{"internal_buffer_count", NULL, OFFSET(internal_buffer_count), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
668
{"global_quality", NULL, OFFSET(global_quality), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
669
{"coder", NULL, OFFSET(coder_type), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E, "coder"},
670
{"vlc", "variable length coder / huffman coder", 0, FF_OPT_TYPE_CONST, FF_CODER_TYPE_VLC, INT_MIN, INT_MAX, V|E, "coder"},
671
{"ac", "arithmetic coder", 0, FF_OPT_TYPE_CONST, FF_CODER_TYPE_AC, INT_MIN, INT_MAX, V|E, "coder"},
672
{"raw", "raw (no encoding)", 0, FF_OPT_TYPE_CONST, FF_CODER_TYPE_RAW, INT_MIN, INT_MAX, V|E, "coder"},
673
{"rle", "run-length coder", 0, FF_OPT_TYPE_CONST, FF_CODER_TYPE_RLE, INT_MIN, INT_MAX, V|E, "coder"},
674
{"deflate", "deflate-based coder", 0, FF_OPT_TYPE_CONST, FF_CODER_TYPE_DEFLATE, INT_MIN, INT_MAX, V|E, "coder"},
675
{"context", "context model", OFFSET(context_model), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
676
{"slice_flags", NULL, OFFSET(slice_flags), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
677
{"xvmc_acceleration", NULL, OFFSET(xvmc_acceleration), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
678
{"mbd", "macroblock decision algorithm (high quality mode)", OFFSET(mb_decision), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E, "mbd"},
679
{"simple", "use mbcmp (default)", 0, FF_OPT_TYPE_CONST, FF_MB_DECISION_SIMPLE, INT_MIN, INT_MAX, V|E, "mbd"},
680
{"bits", "use fewest bits", 0, FF_OPT_TYPE_CONST, FF_MB_DECISION_BITS, INT_MIN, INT_MAX, V|E, "mbd"},
681
{"rd", "use best rate distortion", 0, FF_OPT_TYPE_CONST, FF_MB_DECISION_RD, INT_MIN, INT_MAX, V|E, "mbd"},
682
{"stream_codec_tag", NULL, OFFSET(stream_codec_tag), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
683
{"sc_threshold", "scene change threshold", OFFSET(scenechange_threshold), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
684
{"lmin", "min lagrange factor (VBR)", OFFSET(lmin), FF_OPT_TYPE_INT,  2*FF_QP2LAMBDA, 0, INT_MAX, V|E},
685
{"lmax", "max lagrange factor (VBR)", OFFSET(lmax), FF_OPT_TYPE_INT, 31*FF_QP2LAMBDA, 0, INT_MAX, V|E},
686
{"nr", "noise reduction", OFFSET(noise_reduction), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
687
{"rc_init_occupancy", "number of bits which should be loaded into the rc buffer before decoding starts", OFFSET(rc_initial_buffer_occupancy), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
688
{"inter_threshold", NULL, OFFSET(inter_threshold), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
689
{"flags2", NULL, OFFSET(flags2), FF_OPT_TYPE_FLAGS, CODEC_FLAG2_FASTPSKIP, INT_MIN, INT_MAX, V|A|E|D, "flags2"},
690
{"error", NULL, OFFSET(error_rate), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
691
{"antialias", "MP3 antialias algorithm", OFFSET(antialias_algo), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|D, "aa"},
692
{"auto", NULL, 0, FF_OPT_TYPE_CONST, FF_AA_AUTO, INT_MIN, INT_MAX, V|D, "aa"},
693
{"fastint", NULL, 0, FF_OPT_TYPE_CONST, FF_AA_FASTINT, INT_MIN, INT_MAX, V|D, "aa"},
694
{"int", NULL, 0, FF_OPT_TYPE_CONST, FF_AA_INT, INT_MIN, INT_MAX, V|D, "aa"},
695
{"float", NULL, 0, FF_OPT_TYPE_CONST, FF_AA_FLOAT, INT_MIN, INT_MAX, V|D, "aa"},
696
{"qns", "quantizer noise shaping", OFFSET(quantizer_noise_shaping), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
697
{"threads", NULL, OFFSET(thread_count), FF_OPT_TYPE_INT, 1, INT_MIN, INT_MAX, V|E|D},
698
{"me_threshold", "motion estimaton threshold", OFFSET(me_threshold), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
699
{"mb_threshold", "macroblock threshold", OFFSET(mb_threshold), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
700
{"dc", "intra_dc_precision", OFFSET(intra_dc_precision), FF_OPT_TYPE_INT, 0, INT_MIN, INT_MAX, V|E},
701
{"nssew", "nsse weight", OFFSET(nsse_weight), FF_OPT_TYPE_INT, 8, INT_MIN, INT_MAX, V|E},
702
{"skip_top", "number of macroblock rows at the top which are skipped", OFFSET(skip_top), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|D},
703
{"skip_bottom", "number of macroblock rows at the bottom which are skipped", OFFSET(skip_bottom), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|D},
704
{"profile", NULL, OFFSET(profile), FF_OPT_TYPE_INT, FF_PROFILE_UNKNOWN, INT_MIN, INT_MAX, V|A|E, "profile"},
705
{"unknown", NULL, 0, FF_OPT_TYPE_CONST, FF_PROFILE_UNKNOWN, INT_MIN, INT_MAX, V|A|E, "profile"},
706
{"aac_main", NULL, 0, FF_OPT_TYPE_CONST, FF_PROFILE_AAC_MAIN, INT_MIN, INT_MAX, A|E, "profile"},
707
{"aac_low", NULL, 0, FF_OPT_TYPE_CONST, FF_PROFILE_AAC_LOW, INT_MIN, INT_MAX, A|E, "profile"},
708
{"aac_ssr", NULL, 0, FF_OPT_TYPE_CONST, FF_PROFILE_AAC_SSR, INT_MIN, INT_MAX, A|E, "profile"},
709
{"aac_ltp", NULL, 0, FF_OPT_TYPE_CONST, FF_PROFILE_AAC_LTP, INT_MIN, INT_MAX, A|E, "profile"},
710
{"level", NULL, OFFSET(level), FF_OPT_TYPE_INT, FF_LEVEL_UNKNOWN, INT_MIN, INT_MAX, V|A|E, "level"},
711
{"unknown", NULL, 0, FF_OPT_TYPE_CONST, FF_LEVEL_UNKNOWN, INT_MIN, INT_MAX, V|A|E, "level"},
712
{"lowres", "decode at 1= 1/2, 2=1/4, 3=1/8 resolutions", OFFSET(lowres), FF_OPT_TYPE_INT, 0, 0, INT_MAX, V|D},
713
{"skip_threshold", "frame skip threshold", OFFSET(frame_skip_threshold), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
714
{"skip_factor", "frame skip factor", OFFSET(frame_skip_factor), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
715
{"skip_exp", "frame skip exponent", OFFSET(frame_skip_exp), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
716
{"skipcmp", "frame skip compare function", OFFSET(frame_skip_cmp), FF_OPT_TYPE_INT, FF_CMP_DCTMAX, INT_MIN, INT_MAX, V|E, "cmp_func"},
717
{"border_mask", "increases the quantizer for macroblocks close to borders", OFFSET(border_masking), FF_OPT_TYPE_FLOAT, DEFAULT, -FLT_MAX, FLT_MAX, V|E},
718
{"mblmin", "min macroblock lagrange factor (VBR)", OFFSET(mb_lmin), FF_OPT_TYPE_INT, FF_QP2LAMBDA * 2, 1, FF_LAMBDA_MAX, V|E},
719
{"mblmax", "max macroblock lagrange factor (VBR)", OFFSET(mb_lmax), FF_OPT_TYPE_INT, FF_QP2LAMBDA * 31, 1, FF_LAMBDA_MAX, V|E},
720
{"mepc", "motion estimation bitrate penalty compensation (1.0 = 256)", OFFSET(me_penalty_compensation), FF_OPT_TYPE_INT, 256, INT_MIN, INT_MAX, V|E},
721
{"bidir_refine", "refine the two motion vectors used in bidirectional macroblocks", OFFSET(bidir_refine), FF_OPT_TYPE_INT, DEFAULT, 0, 4, V|E},
722
{"brd_scale", "downscales frames for dynamic B-frame decision", OFFSET(brd_scale), FF_OPT_TYPE_INT, DEFAULT, 0, 10, V|E},
723
{"crf", "enables constant quality mode, and selects the quality (x264)", OFFSET(crf), FF_OPT_TYPE_FLOAT, DEFAULT, 0, 51, V|E},
724
{"cqp", "constant quantization parameter rate control method", OFFSET(cqp), FF_OPT_TYPE_INT, -1, INT_MIN, INT_MAX, V|E},
725
{"keyint_min", "minimum interval between IDR-frames (x264)", OFFSET(keyint_min), FF_OPT_TYPE_INT, 25, INT_MIN, INT_MAX, V|E},
726
{"refs", "reference frames to consider for motion compensation (Snow)", OFFSET(refs), FF_OPT_TYPE_INT, 1, INT_MIN, INT_MAX, V|E},
727
{"chromaoffset", "chroma qp offset from luma", OFFSET(chromaoffset), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
728
{"bframebias", "influences how often B-frames are used", OFFSET(bframebias), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
729
{"trellis", "rate-distortion optimal quantization", OFFSET(trellis), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|A|E},
730
{"directpred", "direct mv prediction mode - 0 (none), 1 (spatial), 2 (temporal)", OFFSET(directpred), FF_OPT_TYPE_INT, 2, INT_MIN, INT_MAX, V|E},
731
{"bpyramid", "allows B-frames to be used as references for predicting", 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_BPYRAMID, INT_MIN, INT_MAX, V|E, "flags2"},
732
{"wpred", "weighted biprediction for b-frames (H.264)", 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_WPRED, INT_MIN, INT_MAX, V|E, "flags2"},
733
{"mixed_refs", "one reference per partition, as opposed to one reference per macroblock", 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_MIXED_REFS, INT_MIN, INT_MAX, V|E, "flags2"},
734
{"dct8x8", "high profile 8x8 transform (H.264)", 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_8X8DCT, INT_MIN, INT_MAX, V|E, "flags2"},
735
{"fastpskip", "fast pskip (H.264)", 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_FASTPSKIP, INT_MIN, INT_MAX, V|E, "flags2"},
736
{"aud", "access unit delimiters (H.264)", 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_AUD, INT_MIN, INT_MAX, V|E, "flags2"},
737
{"brdo", "b-frame rate-distortion optimization", 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_BRDO, INT_MIN, INT_MAX, V|E, "flags2"},
738
{"skiprd", "RD optimal MB level residual skipping", 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_SKIP_RD, INT_MIN, INT_MAX, V|E, "flags2"},
739
{"complexityblur", "reduce fluctuations in qp (before curve compression)", OFFSET(complexityblur), FF_OPT_TYPE_FLOAT, 20.0, FLT_MIN, FLT_MAX, V|E},
740
{"deblockalpha", "in-loop deblocking filter alphac0 parameter", OFFSET(deblockalpha), FF_OPT_TYPE_INT, DEFAULT, -6, 6, V|E},
741
{"deblockbeta", "in-loop deblocking filter beta parameter", OFFSET(deblockbeta), FF_OPT_TYPE_INT, DEFAULT, -6, 6, V|E},
742
{"partitions", "macroblock subpartition sizes to consider", OFFSET(partitions), FF_OPT_TYPE_FLAGS, DEFAULT, INT_MIN, INT_MAX, V|E, "partitions"},
743
{"parti4x4", NULL, 0, FF_OPT_TYPE_CONST, X264_PART_I4X4, INT_MIN, INT_MAX, V|E, "partitions"},
744
{"parti8x8", NULL, 0, FF_OPT_TYPE_CONST, X264_PART_I8X8, INT_MIN, INT_MAX, V|E, "partitions"},
745
{"partp4x4", NULL, 0, FF_OPT_TYPE_CONST, X264_PART_P4X4, INT_MIN, INT_MAX, V|E, "partitions"},
746
{"partp8x8", NULL, 0, FF_OPT_TYPE_CONST, X264_PART_P8X8, INT_MIN, INT_MAX, V|E, "partitions"},
747
{"partb8x8", NULL, 0, FF_OPT_TYPE_CONST, X264_PART_B8X8, INT_MIN, INT_MAX, V|E, "partitions"},
748
{"sc_factor", "multiplied by qscale for each frame and added to scene_change_score", OFFSET(scenechange_factor), FF_OPT_TYPE_INT, 6, 0, INT_MAX, V|E},
749
{"mv0_threshold", NULL, OFFSET(mv0_threshold), FF_OPT_TYPE_INT, 256, 0, INT_MAX, V|E},
750
{"ivlc", "intra vlc table", 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_INTRA_VLC, INT_MIN, INT_MAX, V|E, "flags2"},
751
{"b_sensitivity", "adjusts sensitivity of b_frame_strategy 1", OFFSET(b_sensitivity), FF_OPT_TYPE_INT, 40, 1, INT_MAX, V|E},
752
{"compression_level", NULL, OFFSET(compression_level), FF_OPT_TYPE_INT, FF_COMPRESSION_DEFAULT, INT_MIN, INT_MAX, V|A|E},
753
{"use_lpc", "sets whether to use LPC mode (FLAC)", OFFSET(use_lpc), FF_OPT_TYPE_INT, -1, INT_MIN, INT_MAX, A|E},
754
{"lpc_coeff_precision", "LPC coefficient precision (FLAC)", OFFSET(lpc_coeff_precision), FF_OPT_TYPE_INT, DEFAULT, 0, INT_MAX, A|E},
755
{"min_prediction_order", NULL, OFFSET(min_prediction_order), FF_OPT_TYPE_INT, -1, INT_MIN, INT_MAX, A|E},
756
{"max_prediction_order", NULL, OFFSET(max_prediction_order), FF_OPT_TYPE_INT, -1, INT_MIN, INT_MAX, A|E},
757
{"prediction_order_method", "search method for selecting prediction order", OFFSET(prediction_order_method), FF_OPT_TYPE_INT, -1, INT_MIN, INT_MAX, A|E},
758
{"min_partition_order", NULL, OFFSET(min_partition_order), FF_OPT_TYPE_INT, -1, INT_MIN, INT_MAX, A|E},
759
{"max_partition_order", NULL, OFFSET(max_partition_order), FF_OPT_TYPE_INT, -1, INT_MIN, INT_MAX, A|E},
760
{"timecode_frame_start", "GOP timecode frame start number, in non drop frame format", OFFSET(timecode_frame_start), FF_OPT_TYPE_INT, 0, 0, INT_MAX, V|E},
761
{"drop_frame_timecode", NULL, 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_DROP_FRAME_TIMECODE, INT_MIN, INT_MAX, V|E, "flags2"},
762
{"non_linear_q", "use non linear quantizer", 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_NON_LINEAR_QUANT, INT_MIN, INT_MAX, V|E, "flags2"},
763
{"request_channels", "set desired number of audio channels", OFFSET(request_channels), FF_OPT_TYPE_INT, DEFAULT, 0, INT_MAX, A|D},
764
{"drc_scale", "percentage of dynamic range compression to apply", OFFSET(drc_scale), FF_OPT_TYPE_FLOAT, 1.0, 0.0, 1.0, A|D},
765
{NULL},
766
};
767

    
768
#undef A
769
#undef V
770
#undef S
771
#undef E
772
#undef D
773
#undef DEFAULT
774

    
775
static AVClass av_codec_context_class = { "AVCodecContext", context_to_name, options };
776

    
777
void avcodec_get_context_defaults2(AVCodecContext *s, enum CodecType codec_type){
778
    int flags=0;
779
    memset(s, 0, sizeof(AVCodecContext));
780

    
781
    s->av_class= &av_codec_context_class;
782

    
783
    s->codec_type = codec_type;
784
    if(codec_type == CODEC_TYPE_AUDIO)
785
        flags= AV_OPT_FLAG_AUDIO_PARAM;
786
    else if(codec_type == CODEC_TYPE_VIDEO)
787
        flags= AV_OPT_FLAG_VIDEO_PARAM;
788
    else if(codec_type == CODEC_TYPE_SUBTITLE)
789
        flags= AV_OPT_FLAG_SUBTITLE_PARAM;
790
    av_opt_set_defaults2(s, flags, flags);
791

    
792
    s->rc_eq= "tex^qComp";
793
    s->time_base= (AVRational){0,1};
794
    s->get_buffer= avcodec_default_get_buffer;
795
    s->release_buffer= avcodec_default_release_buffer;
796
    s->get_format= avcodec_default_get_format;
797
    s->execute= avcodec_default_execute;
798
    s->sample_aspect_ratio= (AVRational){0,1};
799
    s->pix_fmt= PIX_FMT_NONE;
800
    s->sample_fmt= SAMPLE_FMT_S16; // FIXME: set to NONE
801

    
802
    s->palctrl = NULL;
803
    s->reget_buffer= avcodec_default_reget_buffer;
804
}
805

    
806
AVCodecContext *avcodec_alloc_context2(enum CodecType codec_type){
807
    AVCodecContext *avctx= av_malloc(sizeof(AVCodecContext));
808

    
809
    if(avctx==NULL) return NULL;
810

    
811
    avcodec_get_context_defaults2(avctx, codec_type);
812

    
813
    return avctx;
814
}
815

    
816
void avcodec_get_context_defaults(AVCodecContext *s){
817
    avcodec_get_context_defaults2(s, CODEC_TYPE_UNKNOWN);
818
}
819

    
820
AVCodecContext *avcodec_alloc_context(void){
821
    return avcodec_alloc_context2(CODEC_TYPE_UNKNOWN);
822
}
823

    
824
void avcodec_get_frame_defaults(AVFrame *pic){
825
    memset(pic, 0, sizeof(AVFrame));
826

    
827
    pic->pts= AV_NOPTS_VALUE;
828
    pic->key_frame= 1;
829
}
830

    
831
AVFrame *avcodec_alloc_frame(void){
832
    AVFrame *pic= av_malloc(sizeof(AVFrame));
833

    
834
    if(pic==NULL) return NULL;
835

    
836
    avcodec_get_frame_defaults(pic);
837

    
838
    return pic;
839
}
840

    
841
int attribute_align_arg avcodec_open(AVCodecContext *avctx, AVCodec *codec)
842
{
843
    int ret= -1;
844

    
845
    entangled_thread_counter++;
846
    if(entangled_thread_counter != 1){
847
        av_log(avctx, AV_LOG_ERROR, "insufficient thread locking around avcodec_open/close()\n");
848
        goto end;
849
    }
850

    
851
    if(avctx->codec || !codec)
852
        goto end;
853

    
854
    if (codec->priv_data_size > 0) {
855
        avctx->priv_data = av_mallocz(codec->priv_data_size);
856
        if (!avctx->priv_data) {
857
            ret = AVERROR(ENOMEM);
858
            goto end;
859
        }
860
    } else {
861
        avctx->priv_data = NULL;
862
    }
863

    
864
    if(avctx->coded_width && avctx->coded_height)
865
        avcodec_set_dimensions(avctx, avctx->coded_width, avctx->coded_height);
866
    else if(avctx->width && avctx->height)
867
        avcodec_set_dimensions(avctx, avctx->width, avctx->height);
868

    
869
    if((avctx->coded_width||avctx->coded_height) && avcodec_check_dimensions(avctx,avctx->coded_width,avctx->coded_height)){
870
        av_freep(&avctx->priv_data);
871
        ret = AVERROR(EINVAL);
872
        goto end;
873
    }
874

    
875
    avctx->codec = codec;
876
    avctx->codec_id = codec->id;
877
    avctx->frame_number = 0;
878
    if(avctx->codec->init){
879
        ret = avctx->codec->init(avctx);
880
        if (ret < 0) {
881
            av_freep(&avctx->priv_data);
882
            avctx->codec= NULL;
883
            goto end;
884
        }
885
    }
886
    ret=0;
887
end:
888
    entangled_thread_counter--;
889
    return ret;
890
}
891

    
892
int attribute_align_arg avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size,
893
                         const short *samples)
894
{
895
    if(buf_size < FF_MIN_BUFFER_SIZE && 0){
896
        av_log(avctx, AV_LOG_ERROR, "buffer smaller than minimum size\n");
897
        return -1;
898
    }
899
    if((avctx->codec->capabilities & CODEC_CAP_DELAY) || samples){
900
        int ret = avctx->codec->encode(avctx, buf, buf_size, (void *)samples);
901
        avctx->frame_number++;
902
        return ret;
903
    }else
904
        return 0;
905
}
906

    
907
int attribute_align_arg avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
908
                         const AVFrame *pict)
909
{
910
    if(buf_size < FF_MIN_BUFFER_SIZE){
911
        av_log(avctx, AV_LOG_ERROR, "buffer smaller than minimum size\n");
912
        return -1;
913
    }
914
    if(avcodec_check_dimensions(avctx,avctx->width,avctx->height))
915
        return -1;
916
    if((avctx->codec->capabilities & CODEC_CAP_DELAY) || pict){
917
        int ret = avctx->codec->encode(avctx, buf, buf_size, (void *)pict);
918
        avctx->frame_number++;
919
        emms_c(); //needed to avoid an emms_c() call before every return;
920

    
921
        return ret;
922
    }else
923
        return 0;
924
}
925

    
926
int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size,
927
                            const AVSubtitle *sub)
928
{
929
    int ret;
930
    ret = avctx->codec->encode(avctx, buf, buf_size, (void *)sub);
931
    avctx->frame_number++;
932
    return ret;
933
}
934

    
935
int attribute_align_arg avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture,
936
                         int *got_picture_ptr,
937
                         uint8_t *buf, int buf_size)
938
{
939
    int ret;
940

    
941
    *got_picture_ptr= 0;
942
    if((avctx->coded_width||avctx->coded_height) && avcodec_check_dimensions(avctx,avctx->coded_width,avctx->coded_height))
943
        return -1;
944
    if((avctx->codec->capabilities & CODEC_CAP_DELAY) || buf_size){
945
        ret = avctx->codec->decode(avctx, picture, got_picture_ptr,
946
                                buf, buf_size);
947

    
948
        emms_c(); //needed to avoid an emms_c() call before every return;
949

    
950
        if (*got_picture_ptr)
951
            avctx->frame_number++;
952
    }else
953
        ret= 0;
954

    
955
    return ret;
956
}
957

    
958
int attribute_align_arg avcodec_decode_audio2(AVCodecContext *avctx, int16_t *samples,
959
                         int *frame_size_ptr,
960
                         uint8_t *buf, int buf_size)
961
{
962
    int ret;
963

    
964
    if((avctx->codec->capabilities & CODEC_CAP_DELAY) || buf_size){
965
        //FIXME remove the check below _after_ ensuring that all audio check that the available space is enough
966
        if(*frame_size_ptr < AVCODEC_MAX_AUDIO_FRAME_SIZE){
967
            av_log(avctx, AV_LOG_ERROR, "buffer smaller than AVCODEC_MAX_AUDIO_FRAME_SIZE\n");
968
            return -1;
969
        }
970
        if(*frame_size_ptr < FF_MIN_BUFFER_SIZE ||
971
        *frame_size_ptr < avctx->channels * avctx->frame_size * sizeof(int16_t)){
972
            av_log(avctx, AV_LOG_ERROR, "buffer %d too small\n", *frame_size_ptr);
973
            return -1;
974
        }
975

    
976
        ret = avctx->codec->decode(avctx, samples, frame_size_ptr,
977
                                buf, buf_size);
978
        avctx->frame_number++;
979
    }else{
980
        ret= 0;
981
        *frame_size_ptr=0;
982
    }
983
    return ret;
984
}
985

    
986
#if LIBAVCODEC_VERSION_INT < ((52<<16)+(0<<8)+0)
987
int avcodec_decode_audio(AVCodecContext *avctx, int16_t *samples,
988
                         int *frame_size_ptr,
989
                         uint8_t *buf, int buf_size){
990
    *frame_size_ptr= AVCODEC_MAX_AUDIO_FRAME_SIZE;
991
    return avcodec_decode_audio2(avctx, samples, frame_size_ptr, buf, buf_size);
992
}
993
#endif
994

    
995
int avcodec_decode_subtitle(AVCodecContext *avctx, AVSubtitle *sub,
996
                            int *got_sub_ptr,
997
                            const uint8_t *buf, int buf_size)
998
{
999
    int ret;
1000

    
1001
    *got_sub_ptr = 0;
1002
    ret = avctx->codec->decode(avctx, sub, got_sub_ptr,
1003
                               (uint8_t *)buf, buf_size);
1004
    if (*got_sub_ptr)
1005
        avctx->frame_number++;
1006
    return ret;
1007
}
1008

    
1009
int avcodec_close(AVCodecContext *avctx)
1010
{
1011
    entangled_thread_counter++;
1012
    if(entangled_thread_counter != 1){
1013
        av_log(avctx, AV_LOG_ERROR, "insufficient thread locking around avcodec_open/close()\n");
1014
        entangled_thread_counter--;
1015
        return -1;
1016
    }
1017

    
1018
    if (ENABLE_THREADS && avctx->thread_opaque)
1019
        avcodec_thread_free(avctx);
1020
    if (avctx->codec->close)
1021
        avctx->codec->close(avctx);
1022
    avcodec_default_free_buffers(avctx);
1023
    av_freep(&avctx->priv_data);
1024
    avctx->codec = NULL;
1025
    entangled_thread_counter--;
1026
    return 0;
1027
}
1028

    
1029
AVCodec *avcodec_find_encoder(enum CodecID id)
1030
{
1031
    AVCodec *p;
1032
    p = first_avcodec;
1033
    while (p) {
1034
        if (p->encode != NULL && p->id == id)
1035
            return p;
1036
        p = p->next;
1037
    }
1038
    return NULL;
1039
}
1040

    
1041
AVCodec *avcodec_find_encoder_by_name(const char *name)
1042
{
1043
    AVCodec *p;
1044
    p = first_avcodec;
1045
    while (p) {
1046
        if (p->encode != NULL && strcmp(name,p->name) == 0)
1047
            return p;
1048
        p = p->next;
1049
    }
1050
    return NULL;
1051
}
1052

    
1053
AVCodec *avcodec_find_decoder(enum CodecID id)
1054
{
1055
    AVCodec *p;
1056
    p = first_avcodec;
1057
    while (p) {
1058
        if (p->decode != NULL && p->id == id)
1059
            return p;
1060
        p = p->next;
1061
    }
1062
    return NULL;
1063
}
1064

    
1065
AVCodec *avcodec_find_decoder_by_name(const char *name)
1066
{
1067
    AVCodec *p;
1068
    p = first_avcodec;
1069
    while (p) {
1070
        if (p->decode != NULL && strcmp(name,p->name) == 0)
1071
            return p;
1072
        p = p->next;
1073
    }
1074
    return NULL;
1075
}
1076

    
1077
void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)
1078
{
1079
    const char *codec_name;
1080
    AVCodec *p;
1081
    char buf1[32];
1082
    char channels_str[100];
1083
    int bitrate;
1084
    AVRational display_aspect_ratio;
1085

    
1086
    if (encode)
1087
        p = avcodec_find_encoder(enc->codec_id);
1088
    else
1089
        p = avcodec_find_decoder(enc->codec_id);
1090

    
1091
    if (p) {
1092
        codec_name = p->name;
1093
        if (!encode && enc->codec_id == CODEC_ID_MP3) {
1094
            if (enc->sub_id == 2)
1095
                codec_name = "mp2";
1096
            else if (enc->sub_id == 1)
1097
                codec_name = "mp1";
1098
        }
1099
    } else if (enc->codec_id == CODEC_ID_MPEG2TS) {
1100
        /* fake mpeg2 transport stream codec (currently not
1101
           registered) */
1102
        codec_name = "mpeg2ts";
1103
    } else if (enc->codec_name[0] != '\0') {
1104
        codec_name = enc->codec_name;
1105
    } else {
1106
        /* output avi tags */
1107
        if(   isprint(enc->codec_tag&0xFF) && isprint((enc->codec_tag>>8)&0xFF)
1108
           && isprint((enc->codec_tag>>16)&0xFF) && isprint((enc->codec_tag>>24)&0xFF)){
1109
            snprintf(buf1, sizeof(buf1), "%c%c%c%c / 0x%04X",
1110
                     enc->codec_tag & 0xff,
1111
                     (enc->codec_tag >> 8) & 0xff,
1112
                     (enc->codec_tag >> 16) & 0xff,
1113
                     (enc->codec_tag >> 24) & 0xff,
1114
                      enc->codec_tag);
1115
        } else {
1116
            snprintf(buf1, sizeof(buf1), "0x%04x", enc->codec_tag);
1117
        }
1118
        codec_name = buf1;
1119
    }
1120

    
1121
    switch(enc->codec_type) {
1122
    case CODEC_TYPE_VIDEO:
1123
        snprintf(buf, buf_size,
1124
                 "Video: %s%s",
1125
                 codec_name, enc->mb_decision ? " (hq)" : "");
1126
        if (enc->pix_fmt != PIX_FMT_NONE) {
1127
            snprintf(buf + strlen(buf), buf_size - strlen(buf),
1128
                     ", %s",
1129
                     avcodec_get_pix_fmt_name(enc->pix_fmt));
1130
        }
1131
        if (enc->width) {
1132
            snprintf(buf + strlen(buf), buf_size - strlen(buf),
1133
                     ", %dx%d",
1134
                     enc->width, enc->height);
1135
            av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
1136
                      enc->width*enc->sample_aspect_ratio.num,
1137
                      enc->height*enc->sample_aspect_ratio.den,
1138
                      1024*1024);
1139
            snprintf(buf + strlen(buf), buf_size - strlen(buf),
1140
                     " [PAR %d:%d DAR %d:%d]",
1141
                     enc->sample_aspect_ratio.num, enc->sample_aspect_ratio.den,
1142
                     display_aspect_ratio.num, display_aspect_ratio.den);
1143
            if(av_log_get_level() >= AV_LOG_DEBUG){
1144
                int g= ff_gcd(enc->time_base.num, enc->time_base.den);
1145
                snprintf(buf + strlen(buf), buf_size - strlen(buf),
1146
                     ", %d/%d",
1147
                     enc->time_base.num/g, enc->time_base.den/g);
1148
            }
1149
        }
1150
        if (encode) {
1151
            snprintf(buf + strlen(buf), buf_size - strlen(buf),
1152
                     ", q=%d-%d", enc->qmin, enc->qmax);
1153
        }
1154
        bitrate = enc->bit_rate;
1155
        break;
1156
    case CODEC_TYPE_AUDIO:
1157
        snprintf(buf, buf_size,
1158
                 "Audio: %s",
1159
                 codec_name);
1160
        switch (enc->channels) {
1161
            case 1:
1162
                strcpy(channels_str, "mono");
1163
                break;
1164
            case 2:
1165
                strcpy(channels_str, "stereo");
1166
                break;
1167
            case 6:
1168
                strcpy(channels_str, "5:1");
1169
                break;
1170
            default:
1171
                snprintf(channels_str, sizeof(channels_str), "%d channels", enc->channels);
1172
                break;
1173
        }
1174
        if (enc->sample_rate) {
1175
            snprintf(buf + strlen(buf), buf_size - strlen(buf),
1176
                     ", %d Hz, %s",
1177
                     enc->sample_rate,
1178
                     channels_str);
1179
        }
1180

    
1181
        /* for PCM codecs, compute bitrate directly */
1182
        switch(enc->codec_id) {
1183
        case CODEC_ID_PCM_S32LE:
1184
        case CODEC_ID_PCM_S32BE:
1185
        case CODEC_ID_PCM_U32LE:
1186
        case CODEC_ID_PCM_U32BE:
1187
            bitrate = enc->sample_rate * enc->channels * 32;
1188
            break;
1189
        case CODEC_ID_PCM_S24LE:
1190
        case CODEC_ID_PCM_S24BE:
1191
        case CODEC_ID_PCM_U24LE:
1192
        case CODEC_ID_PCM_U24BE:
1193
        case CODEC_ID_PCM_S24DAUD:
1194
            bitrate = enc->sample_rate * enc->channels * 24;
1195
            break;
1196
        case CODEC_ID_PCM_S16LE:
1197
        case CODEC_ID_PCM_S16BE:
1198
        case CODEC_ID_PCM_S16LE_PLANAR:
1199
        case CODEC_ID_PCM_U16LE:
1200
        case CODEC_ID_PCM_U16BE:
1201
            bitrate = enc->sample_rate * enc->channels * 16;
1202
            break;
1203
        case CODEC_ID_PCM_S8:
1204
        case CODEC_ID_PCM_U8:
1205
        case CODEC_ID_PCM_ALAW:
1206
        case CODEC_ID_PCM_MULAW:
1207
            bitrate = enc->sample_rate * enc->channels * 8;
1208
            break;
1209
        default:
1210
            bitrate = enc->bit_rate;
1211
            break;
1212
        }
1213
        break;
1214
    case CODEC_TYPE_DATA:
1215
        snprintf(buf, buf_size, "Data: %s", codec_name);
1216
        bitrate = enc->bit_rate;
1217
        break;
1218
    case CODEC_TYPE_SUBTITLE:
1219
        snprintf(buf, buf_size, "Subtitle: %s", codec_name);
1220
        bitrate = enc->bit_rate;
1221
        break;
1222
    default:
1223
        snprintf(buf, buf_size, "Invalid Codec type %d", enc->codec_type);
1224
        return;
1225
    }
1226
    if (encode) {
1227
        if (enc->flags & CODEC_FLAG_PASS1)
1228
            snprintf(buf + strlen(buf), buf_size - strlen(buf),
1229
                     ", pass 1");
1230
        if (enc->flags & CODEC_FLAG_PASS2)
1231
            snprintf(buf + strlen(buf), buf_size - strlen(buf),
1232
                     ", pass 2");
1233
    }
1234
    if (bitrate != 0) {
1235
        snprintf(buf + strlen(buf), buf_size - strlen(buf),
1236
                 ", %d kb/s", bitrate / 1000);
1237
    }
1238
}
1239

    
1240
unsigned avcodec_version( void )
1241
{
1242
  return LIBAVCODEC_VERSION_INT;
1243
}
1244

    
1245
unsigned avcodec_build( void )
1246
{
1247
  return LIBAVCODEC_BUILD;
1248
}
1249

    
1250
static void init_crcs(void){
1251
#if LIBAVUTIL_VERSION_INT  < (50<<16)
1252
    av_crc04C11DB7= av_mallocz_static(sizeof(AVCRC) * 257);
1253
    av_crc8005    = av_mallocz_static(sizeof(AVCRC) * 257);
1254
    av_crc07      = av_mallocz_static(sizeof(AVCRC) * 257);
1255
#endif
1256
    av_crc_init(av_crc04C11DB7, 0, 32, AV_CRC_32_IEEE, sizeof(AVCRC)*257);
1257
    av_crc_init(av_crc8005    , 0, 16, AV_CRC_16     , sizeof(AVCRC)*257);
1258
    av_crc_init(av_crc07      , 0,  8, AV_CRC_8_ATM  , sizeof(AVCRC)*257);
1259
}
1260

    
1261
void avcodec_init(void)
1262
{
1263
    static int inited = 0;
1264

    
1265
    if (inited != 0)
1266
        return;
1267
    inited = 1;
1268

    
1269
    dsputil_static_init();
1270
    init_crcs();
1271
}
1272

    
1273
void avcodec_flush_buffers(AVCodecContext *avctx)
1274
{
1275
    if(avctx->codec->flush)
1276
        avctx->codec->flush(avctx);
1277
}
1278

    
1279
void avcodec_default_free_buffers(AVCodecContext *s){
1280
    int i, j;
1281

    
1282
    if(s->internal_buffer==NULL) return;
1283

    
1284
    for(i=0; i<INTERNAL_BUFFER_SIZE; i++){
1285
        InternalBuffer *buf= &((InternalBuffer*)s->internal_buffer)[i];
1286
        for(j=0; j<4; j++){
1287
            av_freep(&buf->base[j]);
1288
            buf->data[j]= NULL;
1289
        }
1290
    }
1291
    av_freep(&s->internal_buffer);
1292

    
1293
    s->internal_buffer_count=0;
1294
}
1295

    
1296
char av_get_pict_type_char(int pict_type){
1297
    switch(pict_type){
1298
    case I_TYPE: return 'I';
1299
    case P_TYPE: return 'P';
1300
    case B_TYPE: return 'B';
1301
    case S_TYPE: return 'S';
1302
    case SI_TYPE:return 'i';
1303
    case SP_TYPE:return 'p';
1304
    default:     return '?';
1305
    }
1306
}
1307

    
1308
int av_get_bits_per_sample(enum CodecID codec_id){
1309
    switch(codec_id){
1310
    case CODEC_ID_ADPCM_SBPRO_2:
1311
        return 2;
1312
    case CODEC_ID_ADPCM_SBPRO_3:
1313
        return 3;
1314
    case CODEC_ID_ADPCM_SBPRO_4:
1315
    case CODEC_ID_ADPCM_CT:
1316
        return 4;
1317
    case CODEC_ID_PCM_ALAW:
1318
    case CODEC_ID_PCM_MULAW:
1319
    case CODEC_ID_PCM_S8:
1320
    case CODEC_ID_PCM_U8:
1321
        return 8;
1322
    case CODEC_ID_PCM_S16BE:
1323
    case CODEC_ID_PCM_S16LE:
1324
    case CODEC_ID_PCM_S16LE_PLANAR:
1325
    case CODEC_ID_PCM_U16BE:
1326
    case CODEC_ID_PCM_U16LE:
1327
        return 16;
1328
    case CODEC_ID_PCM_S24DAUD:
1329
    case CODEC_ID_PCM_S24BE:
1330
    case CODEC_ID_PCM_S24LE:
1331
    case CODEC_ID_PCM_U24BE:
1332
    case CODEC_ID_PCM_U24LE:
1333
        return 24;
1334
    case CODEC_ID_PCM_S32BE:
1335
    case CODEC_ID_PCM_S32LE:
1336
    case CODEC_ID_PCM_U32BE:
1337
    case CODEC_ID_PCM_U32LE:
1338
        return 32;
1339
    default:
1340
        return 0;
1341
    }
1342
}
1343

    
1344
int av_get_bits_per_sample_format(enum SampleFormat sample_fmt) {
1345
    switch (sample_fmt) {
1346
    case SAMPLE_FMT_U8:
1347
        return 8;
1348
    case SAMPLE_FMT_S16:
1349
        return 16;
1350
    case SAMPLE_FMT_S24:
1351
        return 24;
1352
    case SAMPLE_FMT_S32:
1353
    case SAMPLE_FMT_FLT:
1354
        return 32;
1355
    default:
1356
        return 0;
1357
    }
1358
}
1359

    
1360
#if !defined(HAVE_THREADS)
1361
int avcodec_thread_init(AVCodecContext *s, int thread_count){
1362
    return -1;
1363
}
1364
#endif
1365

    
1366
unsigned int av_xiphlacing(unsigned char *s, unsigned int v)
1367
{
1368
    unsigned int n = 0;
1369

    
1370
    while(v >= 0xff) {
1371
        *s++ = 0xff;
1372
        v -= 0xff;
1373
        n++;
1374
    }
1375
    *s = v;
1376
    n++;
1377
    return n;
1378
}
1379

    
1380
/* Wrapper to work around the lack of mkstemp() on mingw/cygin.
1381
 * Also, tries to create file in /tmp first, if possible.
1382
 * *prefix can be a character constant; *filename will be allocated internally.
1383
 * Returns file descriptor of opened file (or -1 on error)
1384
 * and opened file name in **filename. */
1385
int av_tempfile(char *prefix, char **filename) {
1386
    int fd=-1;
1387
#if !defined(HAVE_MKSTEMP)
1388
    *filename = tempnam(".", prefix);
1389
#else
1390
    size_t len = strlen(prefix) + 12; /* room for "/tmp/" and "XXXXXX\0" */
1391
    *filename = av_malloc(len);
1392
#endif
1393
    /* -----common section-----*/
1394
    if (*filename == NULL) {
1395
        av_log(NULL, AV_LOG_ERROR, "ff_tempfile: Cannot allocate file name\n");
1396
        return -1;
1397
    }
1398
#if !defined(HAVE_MKSTEMP)
1399
    fd = open(*filename, O_RDWR | O_BINARY | O_CREAT, 0444);
1400
#else
1401
    snprintf(*filename, len, "/tmp/%sXXXXXX", prefix);
1402
    fd = mkstemp(*filename);
1403
    if (fd < 0) {
1404
        snprintf(*filename, len, "./%sXXXXXX", prefix);
1405
        fd = mkstemp(*filename);
1406
    }
1407
#endif
1408
    /* -----common section-----*/
1409
    if (fd < 0) {
1410
        av_log(NULL, AV_LOG_ERROR, "ff_tempfile: Cannot open temporary file %s\n", *filename);
1411
        return -1;
1412
    }
1413
    return fd; /* success */
1414
}
1415

    
1416
typedef struct {
1417
    const char *abbr;
1418
    int width, height;
1419
} VideoFrameSizeAbbr;
1420

    
1421
typedef struct {
1422
    const char *abbr;
1423
    int rate_num, rate_den;
1424
} VideoFrameRateAbbr;
1425

    
1426
static VideoFrameSizeAbbr video_frame_size_abbrs[] = {
1427
    { "ntsc",      720, 480 },
1428
    { "pal",       720, 576 },
1429
    { "qntsc",     352, 240 }, /* VCD compliant NTSC */
1430
    { "qpal",      352, 288 }, /* VCD compliant PAL */
1431
    { "sntsc",     640, 480 }, /* square pixel NTSC */
1432
    { "spal",      768, 576 }, /* square pixel PAL */
1433
    { "film",      352, 240 },
1434
    { "ntsc-film", 352, 240 },
1435
    { "sqcif",     128,  96 },
1436
    { "qcif",      176, 144 },
1437
    { "cif",       352, 288 },
1438
    { "4cif",      704, 576 },
1439
    { "qqvga",     160, 120 },
1440
    { "qvga",      320, 240 },
1441
    { "vga",       640, 480 },
1442
    { "svga",      800, 600 },
1443
    { "xga",      1024, 768 },
1444
    { "uxga",     1600,1200 },
1445
    { "qxga",     2048,1536 },
1446
    { "sxga",     1280,1024 },
1447
    { "qsxga",    2560,2048 },
1448
    { "hsxga",    5120,4096 },
1449
    { "wvga",      852, 480 },
1450
    { "wxga",     1366, 768 },
1451
    { "wsxga",    1600,1024 },
1452
    { "wuxga",    1920,1200 },
1453
    { "woxga",    2560,1600 },
1454
    { "wqsxga",   3200,2048 },
1455
    { "wquxga",   3840,2400 },
1456
    { "whsxga",   6400,4096 },
1457
    { "whuxga",   7680,4800 },
1458
    { "cga",       320, 200 },
1459
    { "ega",       640, 350 },
1460
    { "hd480",     852, 480 },
1461
    { "hd720",    1280, 720 },
1462
    { "hd1080",   1920,1080 },
1463
};
1464

    
1465
static VideoFrameRateAbbr video_frame_rate_abbrs[]= {
1466
    { "ntsc",      30000, 1001 },
1467
    { "pal",          25,    1 },
1468
    { "qntsc",     30000, 1001 }, /* VCD compliant NTSC */
1469
    { "qpal",         25,    1 }, /* VCD compliant PAL */
1470
    { "sntsc",     30000, 1001 }, /* square pixel NTSC */
1471
    { "spal",         25,    1 }, /* square pixel PAL */
1472
    { "film",         24,    1 },
1473
    { "ntsc-film", 24000, 1001 },
1474
};
1475

    
1476
int av_parse_video_frame_size(int *width_ptr, int *height_ptr, const char *str)
1477
{
1478
    int i;
1479
    int n = sizeof(video_frame_size_abbrs) / sizeof(VideoFrameSizeAbbr);
1480
    const char *p;
1481
    int frame_width = 0, frame_height = 0;
1482

    
1483
    for(i=0;i<n;i++) {
1484
        if (!strcmp(video_frame_size_abbrs[i].abbr, str)) {
1485
            frame_width = video_frame_size_abbrs[i].width;
1486
            frame_height = video_frame_size_abbrs[i].height;
1487
            break;
1488
        }
1489
    }
1490
    if (i == n) {
1491
        p = str;
1492
        frame_width = strtol(p, (char **)&p, 10);
1493
        if (*p)
1494
            p++;
1495
        frame_height = strtol(p, (char **)&p, 10);
1496
    }
1497
    if (frame_width <= 0 || frame_height <= 0)
1498
        return -1;
1499
    *width_ptr = frame_width;
1500
    *height_ptr = frame_height;
1501
    return 0;
1502
}
1503

    
1504
int av_parse_video_frame_rate(AVRational *frame_rate, const char *arg)
1505
{
1506
    int i;
1507
    int n = sizeof(video_frame_rate_abbrs) / sizeof(VideoFrameRateAbbr);
1508
    char* cp;
1509

    
1510
    /* First, we check our abbreviation table */
1511
    for (i = 0; i < n; ++i)
1512
         if (!strcmp(video_frame_rate_abbrs[i].abbr, arg)) {
1513
             frame_rate->num = video_frame_rate_abbrs[i].rate_num;
1514
             frame_rate->den = video_frame_rate_abbrs[i].rate_den;
1515
             return 0;
1516
         }
1517

    
1518
    /* Then, we try to parse it as fraction */
1519
    cp = strchr(arg, '/');
1520
    if (!cp)
1521
        cp = strchr(arg, ':');
1522
    if (cp) {
1523
        char* cpp;
1524
        frame_rate->num = strtol(arg, &cpp, 10);
1525
        if (cpp != arg || cpp == cp)
1526
            frame_rate->den = strtol(cp+1, &cpp, 10);
1527
        else
1528
           frame_rate->num = 0;
1529
    }
1530
    else {
1531
        /* Finally we give up and parse it as double */
1532
        AVRational time_base = av_d2q(strtod(arg, 0), DEFAULT_FRAME_RATE_BASE);
1533
        frame_rate->den = time_base.den;
1534
        frame_rate->num = time_base.num;
1535
    }
1536
    if (!frame_rate->num || !frame_rate->den)
1537
        return -1;
1538
    else
1539
        return 0;
1540
}