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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
#ifdef __MINGW32__
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
void register_avcodec(AVCodec *format)
130
{
131
    AVCodec **p;
132
    p = &first_avcodec;
133
    while (*p != NULL) p = &(*p)->next;
134
    *p = format;
135
    format->next = NULL;
136
}
137

    
138
void avcodec_set_dimensions(AVCodecContext *s, int width, int height){
139
    s->coded_width = width;
140
    s->coded_height= height;
141
    s->width = -((-width )>>s->lowres);
142
    s->height= -((-height)>>s->lowres);
143
}
144

    
145
typedef struct InternalBuffer{
146
    int last_pic_num;
147
    uint8_t *base[4];
148
    uint8_t *data[4];
149
    int linesize[4];
150
}InternalBuffer;
151

    
152
#define INTERNAL_BUFFER_SIZE 32
153

    
154
#define ALIGN(x, a) (((x)+(a)-1)&~((a)-1))
155

    
156
void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height){
157
    int w_align= 1;
158
    int h_align= 1;
159

    
160
    switch(s->pix_fmt){
161
    case PIX_FMT_YUV420P:
162
    case PIX_FMT_YUYV422:
163
    case PIX_FMT_UYVY422:
164
    case PIX_FMT_YUV422P:
165
    case PIX_FMT_YUV444P:
166
    case PIX_FMT_GRAY8:
167
    case PIX_FMT_GRAY16BE:
168
    case PIX_FMT_GRAY16LE:
169
    case PIX_FMT_YUVJ420P:
170
    case PIX_FMT_YUVJ422P:
171
    case PIX_FMT_YUVJ444P:
172
        w_align= 16; //FIXME check for non mpeg style codecs and use less alignment
173
        h_align= 16;
174
        break;
175
    case PIX_FMT_YUV411P:
176
    case PIX_FMT_UYYVYY411:
177
        w_align=32;
178
        h_align=8;
179
        break;
180
    case PIX_FMT_YUV410P:
181
        if(s->codec_id == CODEC_ID_SVQ1){
182
            w_align=64;
183
            h_align=64;
184
        }
185
    case PIX_FMT_RGB555:
186
        if(s->codec_id == CODEC_ID_RPZA){
187
            w_align=4;
188
            h_align=4;
189
        }
190
    case PIX_FMT_PAL8:
191
        if(s->codec_id == CODEC_ID_SMC){
192
            w_align=4;
193
            h_align=4;
194
        }
195
        break;
196
    case PIX_FMT_BGR24:
197
        if((s->codec_id == CODEC_ID_MSZH) || (s->codec_id == CODEC_ID_ZLIB)){
198
            w_align=4;
199
            h_align=4;
200
        }
201
        break;
202
    default:
203
        w_align= 1;
204
        h_align= 1;
205
        break;
206
    }
207

    
208
    *width = ALIGN(*width , w_align);
209
    *height= ALIGN(*height, h_align);
210
}
211

    
212
int avcodec_check_dimensions(void *av_log_ctx, unsigned int w, unsigned int h){
213
    if((int)w>0 && (int)h>0 && (w+128)*(uint64_t)(h+128) < INT_MAX/4)
214
        return 0;
215

    
216
    av_log(av_log_ctx, AV_LOG_ERROR, "picture size invalid (%ux%u)\n", w, h);
217
    return -1;
218
}
219

    
220
int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic){
221
    int i;
222
    int w= s->width;
223
    int h= s->height;
224
    InternalBuffer *buf;
225
    int *picture_number;
226

    
227
    if(pic->data[0]!=NULL) {
228
        av_log(s, AV_LOG_ERROR, "pic->data[0]!=NULL in avcodec_default_get_buffer\n");
229
        return -1;
230
    }
231
    if(s->internal_buffer_count >= INTERNAL_BUFFER_SIZE) {
232
        av_log(s, AV_LOG_ERROR, "internal_buffer_count overflow (missing release_buffer?)\n");
233
        return -1;
234
    }
235

    
236
    if(avcodec_check_dimensions(s,w,h))
237
        return -1;
238

    
239
    if(s->internal_buffer==NULL){
240
        s->internal_buffer= av_mallocz(INTERNAL_BUFFER_SIZE*sizeof(InternalBuffer));
241
    }
242
#if 0
243
    s->internal_buffer= av_fast_realloc(
244
        s->internal_buffer,
245
        &s->internal_buffer_size,
246
        sizeof(InternalBuffer)*FFMAX(99,  s->internal_buffer_count+1)/*FIXME*/
247
        );
248
#endif
249

    
250
    buf= &((InternalBuffer*)s->internal_buffer)[s->internal_buffer_count];
251
    picture_number= &(((InternalBuffer*)s->internal_buffer)[INTERNAL_BUFFER_SIZE-1]).last_pic_num; //FIXME ugly hack
252
    (*picture_number)++;
253

    
254
    if(buf->base[0]){
255
        pic->age= *picture_number - buf->last_pic_num;
256
        buf->last_pic_num= *picture_number;
257
    }else{
258
        int h_chroma_shift, v_chroma_shift;
259
        int pixel_size, size[3];
260
        AVPicture picture;
261

    
262
        avcodec_get_chroma_sub_sample(s->pix_fmt, &h_chroma_shift, &v_chroma_shift);
263

    
264
        avcodec_align_dimensions(s, &w, &h);
265

    
266
        if(!(s->flags&CODEC_FLAG_EMU_EDGE)){
267
            w+= EDGE_WIDTH*2;
268
            h+= EDGE_WIDTH*2;
269
        }
270
        avcodec_align_dimensions(s, &w, &h);
271

    
272
        avpicture_fill(&picture, NULL, s->pix_fmt, w, h);
273
        pixel_size= picture.linesize[0]*8 / w;
274
//av_log(NULL, AV_LOG_ERROR, "%d %d %d %d\n", (int)picture.data[1], w, h, s->pix_fmt);
275
        assert(pixel_size>=1);
276
            //FIXME next ensures that linesize= 2^x uvlinesize, that is needed because some MC code assumes it
277
        if(pixel_size == 3*8)
278
            w= ALIGN(w, STRIDE_ALIGN<<h_chroma_shift);
279
        else
280
            w= ALIGN(pixel_size*w, STRIDE_ALIGN<<(h_chroma_shift+3)) / pixel_size;
281
        size[1] = avpicture_fill(&picture, NULL, s->pix_fmt, w, h);
282
        size[0] = picture.linesize[0] * h;
283
        size[1] -= size[0];
284
        if(picture.data[2])
285
            size[1]= size[2]= size[1]/2;
286
        else
287
            size[2]= 0;
288

    
289
        buf->last_pic_num= -256*256*256*64;
290
        memset(buf->base, 0, sizeof(buf->base));
291
        memset(buf->data, 0, sizeof(buf->data));
292

    
293
        for(i=0; i<3 && size[i]; i++){
294
            const int h_shift= i==0 ? 0 : h_chroma_shift;
295
            const int v_shift= i==0 ? 0 : v_chroma_shift;
296

    
297
            buf->linesize[i]= picture.linesize[i];
298

    
299
            buf->base[i]= av_malloc(size[i]+16); //FIXME 16
300
            if(buf->base[i]==NULL) return -1;
301
            memset(buf->base[i], 128, size[i]);
302

    
303
            // no edge if EDEG EMU or not planar YUV, we check for PAL8 redundantly to protect against a exploitable bug regression ...
304
            if((s->flags&CODEC_FLAG_EMU_EDGE) || (s->pix_fmt == PIX_FMT_PAL8) || !size[2])
305
                buf->data[i] = buf->base[i];
306
            else
307
                buf->data[i] = buf->base[i] + ALIGN((buf->linesize[i]*EDGE_WIDTH>>v_shift) + (EDGE_WIDTH>>h_shift), STRIDE_ALIGN);
308
        }
309
        pic->age= 256*256*256*64;
310
    }
311
    pic->type= FF_BUFFER_TYPE_INTERNAL;
312

    
313
    for(i=0; i<4; i++){
314
        pic->base[i]= buf->base[i];
315
        pic->data[i]= buf->data[i];
316
        pic->linesize[i]= buf->linesize[i];
317
    }
318
    s->internal_buffer_count++;
319

    
320
    return 0;
321
}
322

    
323
void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic){
324
    int i;
325
    InternalBuffer *buf, *last;
326

    
327
    assert(pic->type==FF_BUFFER_TYPE_INTERNAL);
328
    assert(s->internal_buffer_count);
329

    
330
    buf = NULL; /* avoids warning */
331
    for(i=0; i<s->internal_buffer_count; i++){ //just 3-5 checks so is not worth to optimize
332
        buf= &((InternalBuffer*)s->internal_buffer)[i];
333
        if(buf->data[0] == pic->data[0])
334
            break;
335
    }
336
    assert(i < s->internal_buffer_count);
337
    s->internal_buffer_count--;
338
    last = &((InternalBuffer*)s->internal_buffer)[s->internal_buffer_count];
339

    
340
    FFSWAP(InternalBuffer, *buf, *last);
341

    
342
    for(i=0; i<3; i++){
343
        pic->data[i]=NULL;
344
//        pic->base[i]=NULL;
345
    }
346
//printf("R%X\n", pic->opaque);
347
}
348

    
349
int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic){
350
    AVFrame temp_pic;
351
    int i;
352

    
353
    /* If no picture return a new buffer */
354
    if(pic->data[0] == NULL) {
355
        /* We will copy from buffer, so must be readable */
356
        pic->buffer_hints |= FF_BUFFER_HINTS_READABLE;
357
        return s->get_buffer(s, pic);
358
    }
359

    
360
    /* If internal buffer type return the same buffer */
361
    if(pic->type == FF_BUFFER_TYPE_INTERNAL)
362
        return 0;
363

    
364
    /*
365
     * Not internal type and reget_buffer not overridden, emulate cr buffer
366
     */
367
    temp_pic = *pic;
368
    for(i = 0; i < 4; i++)
369
        pic->data[i] = pic->base[i] = NULL;
370
    pic->opaque = NULL;
371
    /* Allocate new frame */
372
    if (s->get_buffer(s, pic))
373
        return -1;
374
    /* Copy image data from old buffer to new buffer */
375
    av_picture_copy((AVPicture*)pic, (AVPicture*)&temp_pic, s->pix_fmt, s->width,
376
             s->height);
377
    s->release_buffer(s, &temp_pic); // Release old frame
378
    return 0;
379
}
380

    
381
int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2),void **arg, int *ret, int count){
382
    int i;
383

    
384
    for(i=0; i<count; i++){
385
        int r= func(c, arg[i]);
386
        if(ret) ret[i]= r;
387
    }
388
    return 0;
389
}
390

    
391
enum PixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum PixelFormat * fmt){
392
    return fmt[0];
393
}
394

    
395
static const char* context_to_name(void* ptr) {
396
    AVCodecContext *avc= ptr;
397

    
398
    if(avc && avc->codec && avc->codec->name)
399
        return avc->codec->name;
400
    else
401
        return "NULL";
402
}
403

    
404
#define OFFSET(x) offsetof(AVCodecContext,x)
405
#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
406
//these names are too long to be readable
407
#define V AV_OPT_FLAG_VIDEO_PARAM
408
#define A AV_OPT_FLAG_AUDIO_PARAM
409
#define S AV_OPT_FLAG_SUBTITLE_PARAM
410
#define E AV_OPT_FLAG_ENCODING_PARAM
411
#define D AV_OPT_FLAG_DECODING_PARAM
412

    
413
#define AV_CODEC_DEFAULT_BITRATE 200*1000
414

    
415
static const AVOption options[]={
416
{"b", "set bitrate (in bits/s)", OFFSET(bit_rate), FF_OPT_TYPE_INT, AV_CODEC_DEFAULT_BITRATE, INT_MIN, INT_MAX, V|E},
417
{"ab", "set bitrate (in bits/s)", OFFSET(bit_rate), FF_OPT_TYPE_INT, 64*1000, INT_MIN, INT_MAX, A|E},
418
{"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},
419
{"flags", NULL, OFFSET(flags), FF_OPT_TYPE_FLAGS, DEFAULT, INT_MIN, INT_MAX, V|A|E|D, "flags"},
420
{"mv4", "use four motion vector by macroblock (mpeg4)", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_4MV, INT_MIN, INT_MAX, V|E, "flags"},
421
{"obmc", "use overlapped block motion compensation (h263+)", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_OBMC, INT_MIN, INT_MAX, V|E, "flags"},
422
{"qpel", "use 1/4 pel motion compensation", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_QPEL, INT_MIN, INT_MAX, V|E, "flags"},
423
{"loop", "use loop filter", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_LOOP_FILTER, INT_MIN, INT_MAX, V|E, "flags"},
424
{"qscale", "use fixed qscale", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_QSCALE, INT_MIN, INT_MAX, 0, "flags"},
425
{"gmc", "use gmc", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_GMC, INT_MIN, INT_MAX, V|E, "flags"},
426
{"mv0", "always try a mb with mv=<0,0>", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_MV0, INT_MIN, INT_MAX, V|E, "flags"},
427
{"part", "use data partitioning", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_PART, INT_MIN, INT_MAX, V|E, "flags"},
428
{"input_preserved", NULL, 0, FF_OPT_TYPE_CONST, CODEC_FLAG_INPUT_PRESERVED, INT_MIN, INT_MAX, 0, "flags"},
429
{"pass1", "use internal 2pass ratecontrol in first  pass mode", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_PASS1, INT_MIN, INT_MAX, 0, "flags"},
430
{"pass2", "use internal 2pass ratecontrol in second pass mode", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_PASS2, INT_MIN, INT_MAX, 0, "flags"},
431
{"extern_huff", "use external huffman table (for mjpeg)", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_EXTERN_HUFF, INT_MIN, INT_MAX, 0, "flags"},
432
{"gray", "only decode/encode grayscale", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_GRAY, INT_MIN, INT_MAX, V|E|D, "flags"},
433
{"emu_edge", "don't draw edges", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_EMU_EDGE, INT_MIN, INT_MAX, 0, "flags"},
434
{"psnr", "error[?] variables will be set during encoding", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_PSNR, INT_MIN, INT_MAX, V|E, "flags"},
435
{"truncated", NULL, 0, FF_OPT_TYPE_CONST, CODEC_FLAG_TRUNCATED, INT_MIN, INT_MAX, 0, "flags"},
436
{"naq", "normalize adaptive quantization", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_NORMALIZE_AQP, INT_MIN, INT_MAX, V|E, "flags"},
437
{"ildct", "use interlaced dct", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_INTERLACED_DCT, INT_MIN, INT_MAX, V|E, "flags"},
438
{"low_delay", "force low delay", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_LOW_DELAY, INT_MIN, INT_MAX, V|D|E, "flags"},
439
{"alt", "enable alternate scantable (mpeg2/mpeg4)", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_ALT_SCAN, INT_MIN, INT_MAX, V|E, "flags"},
440
{"trell", "use trellis quantization", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_TRELLIS_QUANT, INT_MIN, INT_MAX, V|E, "flags"},
441
{"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"},
442
{"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"},
443
{"aic", "h263 advanced intra coding / mpeg4 ac prediction", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_AC_PRED, INT_MIN, INT_MAX, V|E, "flags"},
444
{"umv", "use unlimited motion vectors", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_H263P_UMV, INT_MIN, INT_MAX, V|E, "flags"},
445
{"cbp", "use rate distortion optimization for cbp", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_CBP_RD, INT_MIN, INT_MAX, V|E, "flags"},
446
{"qprd", "use rate distortion optimization for qp selection", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_QP_RD, INT_MIN, INT_MAX, V|E, "flags"},
447
{"aiv", "h263 alternative inter vlc", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_H263P_AIV, INT_MIN, INT_MAX, V|E, "flags"},
448
{"slice", NULL, 0, FF_OPT_TYPE_CONST, CODEC_FLAG_H263P_SLICE_STRUCT, INT_MIN, INT_MAX, V|E, "flags"},
449
{"ilme", "interlaced motion estimation", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_INTERLACED_ME, INT_MIN, INT_MAX, V|E, "flags"},
450
{"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"},
451
{"cgop", "closed gop", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_CLOSED_GOP, INT_MIN, INT_MAX, V|E, "flags"},
452
{"fast", "allow non spec compliant speedup tricks", 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_FAST, INT_MIN, INT_MAX, V|E, "flags2"},
453
{"sgop", "strictly enforce gop size", 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_STRICT_GOP, INT_MIN, INT_MAX, V|E, "flags2"},
454
{"noout", "skip bitstream encoding", 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_NO_OUTPUT, INT_MIN, INT_MAX, V|E, "flags2"},
455
{"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"},
456
{"sub_id", NULL, OFFSET(sub_id), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
457
{"me_method", "set motion estimation method", OFFSET(me_method), FF_OPT_TYPE_INT, ME_EPZS, INT_MIN, INT_MAX, V|E, "me_method"},
458
{"extradata_size", NULL, OFFSET(extradata_size), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
459
{"time_base", NULL, OFFSET(time_base), FF_OPT_TYPE_RATIONAL, DEFAULT, INT_MIN, INT_MAX},
460
{"g", "set the group of picture size", OFFSET(gop_size), FF_OPT_TYPE_INT, 12, INT_MIN, INT_MAX, V|E},
461
{"rate_emu", "frame rate emulation", OFFSET(rate_emu), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
462
{"ar", "set audio sampling rate (in Hz)", OFFSET(sample_rate), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
463
{"ac", "set number of audio channels", OFFSET(channels), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
464
{"cutoff", "set cutoff bandwidth", OFFSET(cutoff), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, A|E},
465
{"frame_size", NULL, OFFSET(frame_size), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, A|E},
466
{"frame_number", NULL, OFFSET(frame_number), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
467
{"real_pict_num", NULL, OFFSET(real_pict_num), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
468
{"delay", NULL, OFFSET(delay), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
469
{"qcomp", "video quantizer scale compression (VBR)", OFFSET(qcompress), FF_OPT_TYPE_FLOAT, 0.5, FLT_MIN, FLT_MAX, V|E},
470
{"qblur", "video quantizer scale blur (VBR)", OFFSET(qblur), FF_OPT_TYPE_FLOAT, 0.5, FLT_MIN, FLT_MAX, V|E},
471
{"qmin", "min video quantizer scale (VBR)", OFFSET(qmin), FF_OPT_TYPE_INT, 2, 1, 51, V|E},
472
{"qmax", "max video quantizer scale (VBR)", OFFSET(qmax), FF_OPT_TYPE_INT, 31, 1, 51, V|E},
473
{"qdiff", "max difference between the quantizer scale (VBR)", OFFSET(max_qdiff), FF_OPT_TYPE_INT, 3, INT_MIN, INT_MAX, V|E},
474
{"bf", "use 'frames' B frames", OFFSET(max_b_frames), FF_OPT_TYPE_INT, DEFAULT, 0, FF_MAX_B_FRAMES, V|E},
475
{"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},
476
{"rc_strategy", "ratecontrol method", OFFSET(rc_strategy), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
477
{"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},
478
{"hurry_up", NULL, OFFSET(hurry_up), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|D},
479
#if LIBAVCODEC_VERSION_INT < ((52<<16)+(0<<8)+0)
480
{"rtp_mode", NULL, OFFSET(rtp_mode), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
481
#endif
482
{"ps", "rtp payload size in bits", OFFSET(rtp_payload_size), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
483
{"mv_bits", NULL, OFFSET(mv_bits), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
484
{"header_bits", NULL, OFFSET(header_bits), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
485
{"i_tex_bits", NULL, OFFSET(i_tex_bits), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
486
{"p_tex_bits", NULL, OFFSET(p_tex_bits), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
487
{"i_count", NULL, OFFSET(i_count), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
488
{"p_count", NULL, OFFSET(p_count), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
489
{"skip_count", NULL, OFFSET(skip_count), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
490
{"misc_bits", NULL, OFFSET(misc_bits), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
491
{"frame_bits", NULL, OFFSET(frame_bits), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
492
{"codec_tag", NULL, OFFSET(codec_tag), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
493
{"bug", "workaround not auto detected encoder bugs", OFFSET(workaround_bugs), FF_OPT_TYPE_FLAGS, FF_BUG_AUTODETECT, INT_MIN, INT_MAX, V|D, "bug"},
494
{"autodetect", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_AUTODETECT, INT_MIN, INT_MAX, V|D, "bug"},
495
{"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"},
496
{"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"},
497
{"ump4", "(autodetected if fourcc==UMP4)", 0, FF_OPT_TYPE_CONST, FF_BUG_UMP4, INT_MIN, INT_MAX, V|D, "bug"},
498
{"no_padding", "padding bug (autodetected)", 0, FF_OPT_TYPE_CONST, FF_BUG_NO_PADDING, INT_MIN, INT_MAX, V|D, "bug"},
499
{"amv", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_AMV, INT_MIN, INT_MAX, V|D, "bug"},
500
{"ac_vlc", "illegal vlc bug (autodetected per fourcc)", 0, FF_OPT_TYPE_CONST, FF_BUG_AC_VLC, INT_MIN, INT_MAX, V|D, "bug"},
501
{"qpel_chroma", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_QPEL_CHROMA, INT_MIN, INT_MAX, V|D, "bug"},
502
{"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"},
503
{"qpel_chroma2", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_QPEL_CHROMA2, INT_MIN, INT_MAX, V|D, "bug"},
504
{"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"},
505
{"edge", "edge padding bug (autodetected per fourcc/version)", 0, FF_OPT_TYPE_CONST, FF_BUG_EDGE, INT_MIN, INT_MAX, V|D, "bug"},
506
{"hpel_chroma", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_HPEL_CHROMA, INT_MIN, INT_MAX, V|D, "bug"},
507
{"dc_clip", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_DC_CLIP, INT_MIN, INT_MAX, V|D, "bug"},
508
{"ms", "workaround various bugs in microsofts broken decoders", 0, FF_OPT_TYPE_CONST, FF_BUG_MS, INT_MIN, INT_MAX, V|D, "bug"},
509
{"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},
510
{"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},
511
{"strict", "how strictly to follow the standards", OFFSET(strict_std_compliance), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, A|V|D, "strict"},
512
{"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"},
513
{"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"},
514
{"normal", NULL, 0, FF_OPT_TYPE_CONST, FF_COMPLIANCE_NORMAL, INT_MIN, INT_MAX, V|E, "strict"},
515
{"inofficial", "allow inofficial extensions", 0, FF_OPT_TYPE_CONST, FF_COMPLIANCE_INOFFICIAL, INT_MIN, INT_MAX, V|E, "strict"},
516
{"experimental", "allow non standardized experimental things", 0, FF_OPT_TYPE_CONST, FF_COMPLIANCE_EXPERIMENTAL, INT_MIN, INT_MAX, V|E, "strict"},
517
{"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},
518
{"er", "set error resilience strategy", OFFSET(error_resilience), FF_OPT_TYPE_INT, FF_ER_CAREFUL, INT_MIN, INT_MAX, A|V|D, "er"},
519
{"careful", NULL, 0, FF_OPT_TYPE_CONST, FF_ER_CAREFUL, INT_MIN, INT_MAX, V|D, "er"},
520
{"compliant", NULL, 0, FF_OPT_TYPE_CONST, FF_ER_COMPLIANT, INT_MIN, INT_MAX, V|D, "er"},
521
{"aggressive", NULL, 0, FF_OPT_TYPE_CONST, FF_ER_AGGRESSIVE, INT_MIN, INT_MAX, V|D, "er"},
522
{"very_aggressive", NULL, 0, FF_OPT_TYPE_CONST, FF_ER_VERY_AGGRESSIVE, INT_MIN, INT_MAX, V|D, "er"},
523
{"has_b_frames", NULL, OFFSET(has_b_frames), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
524
{"block_align", NULL, OFFSET(block_align), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
525
{"parse_only", NULL, OFFSET(parse_only), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
526
{"mpeg_quant", "use MPEG quantizers instead of H.263", OFFSET(mpeg_quant), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
527
{"stats_out", NULL, OFFSET(stats_out), FF_OPT_TYPE_STRING, DEFAULT, CHAR_MIN, CHAR_MAX},
528
{"stats_in", NULL, OFFSET(stats_in), FF_OPT_TYPE_STRING, DEFAULT, CHAR_MIN, CHAR_MAX},
529
{"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},
530
{"rc_qmod_amp", "experimental quantizer modulation", OFFSET(rc_qmod_amp), FF_OPT_TYPE_FLOAT, DEFAULT, -FLT_MAX, FLT_MAX, V|E},
531
{"rc_qmod_freq", "experimental quantizer modulation", OFFSET(rc_qmod_freq), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
532
{"rc_override_count", NULL, OFFSET(rc_override_count), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
533
{"rc_eq", "set rate control equation", OFFSET(rc_eq), FF_OPT_TYPE_STRING, DEFAULT, CHAR_MIN, CHAR_MAX, V|E},
534
{"maxrate", "set max video bitrate tolerance (in bits/s)", OFFSET(rc_max_rate), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
535
{"minrate", "set min video bitrate tolerance (in bits/s)", OFFSET(rc_min_rate), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
536
{"bufsize", "set ratecontrol buffer size (in bits)", OFFSET(rc_buffer_size), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
537
{"rc_buf_aggressivity", "currently useless", OFFSET(rc_buffer_aggressivity), FF_OPT_TYPE_FLOAT, 1.0, FLT_MIN, FLT_MAX, V|E},
538
{"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},
539
{"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},
540
{"rc_init_cplx", "initial complexity for 1-pass encoding", OFFSET(rc_initial_cplx), FF_OPT_TYPE_FLOAT, DEFAULT, -FLT_MAX, FLT_MAX, V|E},
541
{"dct", "DCT algorithm", OFFSET(dct_algo), FF_OPT_TYPE_INT, DEFAULT, 0, INT_MAX, V|E, "dct"},
542
{"auto", "autoselect a good one (default)", 0, FF_OPT_TYPE_CONST, FF_DCT_AUTO, INT_MIN, INT_MAX, V|E, "dct"},
543
{"fastint", "fast integer", 0, FF_OPT_TYPE_CONST, FF_DCT_FASTINT, INT_MIN, INT_MAX, V|E, "dct"},
544
{"int", "accurate integer", 0, FF_OPT_TYPE_CONST, FF_DCT_INT, INT_MIN, INT_MAX, V|E, "dct"},
545
{"mmx", NULL, 0, FF_OPT_TYPE_CONST, FF_DCT_MMX, INT_MIN, INT_MAX, V|E, "dct"},
546
{"mlib", NULL, 0, FF_OPT_TYPE_CONST, FF_DCT_MLIB, INT_MIN, INT_MAX, V|E, "dct"},
547
{"altivec", NULL, 0, FF_OPT_TYPE_CONST, FF_DCT_ALTIVEC, INT_MIN, INT_MAX, V|E, "dct"},
548
{"faan", "floating point AAN DCT", 0, FF_OPT_TYPE_CONST, FF_DCT_FAAN, INT_MIN, INT_MAX, V|E, "dct"},
549
{"lumi_mask", "compresses bright areas stronger than medium ones", OFFSET(lumi_masking), FF_OPT_TYPE_FLOAT, 0, -FLT_MAX, FLT_MAX, V|E},
550
{"tcplx_mask", "temporal complexity masking", OFFSET(temporal_cplx_masking), FF_OPT_TYPE_FLOAT, 0, -FLT_MAX, FLT_MAX, V|E},
551
{"scplx_mask", "spatial complexity masking", OFFSET(spatial_cplx_masking), FF_OPT_TYPE_FLOAT, 0, -FLT_MAX, FLT_MAX, V|E},
552
{"p_mask", "inter masking", OFFSET(p_masking), FF_OPT_TYPE_FLOAT, 0, -FLT_MAX, FLT_MAX, V|E},
553
{"dark_mask", "compresses dark areas stronger than medium ones", OFFSET(dark_masking), FF_OPT_TYPE_FLOAT, 0, -FLT_MAX, FLT_MAX, V|E},
554
{"unused", NULL, OFFSET(unused), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
555
{"idct", "select IDCT implementation", OFFSET(idct_algo), FF_OPT_TYPE_INT, DEFAULT, 0, INT_MAX, V|E|D, "idct"},
556
{"auto", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_AUTO, INT_MIN, INT_MAX, V|E|D, "idct"},
557
{"int", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_INT, INT_MIN, INT_MAX, V|E|D, "idct"},
558
{"simple", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_SIMPLE, INT_MIN, INT_MAX, V|E|D, "idct"},
559
{"simplemmx", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_SIMPLEMMX, INT_MIN, INT_MAX, V|E|D, "idct"},
560
{"libmpeg2mmx", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_LIBMPEG2MMX, INT_MIN, INT_MAX, V|E|D, "idct"},
561
{"ps2", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_PS2, INT_MIN, INT_MAX, V|E|D, "idct"},
562
{"mlib", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_MLIB, INT_MIN, INT_MAX, V|E|D, "idct"},
563
{"arm", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_ARM, INT_MIN, INT_MAX, V|E|D, "idct"},
564
{"altivec", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_ALTIVEC, INT_MIN, INT_MAX, V|E|D, "idct"},
565
{"sh4", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_SH4, INT_MIN, INT_MAX, V|E|D, "idct"},
566
{"simplearm", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_SIMPLEARM, INT_MIN, INT_MAX, V|E|D, "idct"},
567
{"simplearmv5te", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_SIMPLEARMV5TE, INT_MIN, INT_MAX, V|E|D, "idct"},
568
{"h264", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_H264, INT_MIN, INT_MAX, V|E|D, "idct"},
569
{"vp3", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_VP3, INT_MIN, INT_MAX, V|E|D, "idct"},
570
{"ipp", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_IPP, INT_MIN, INT_MAX, V|E|D, "idct"},
571
{"xvidmmx", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_XVIDMMX, INT_MIN, INT_MAX, V|E|D, "idct"},
572
{"slice_count", NULL, OFFSET(slice_count), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
573
{"ec", "set error concealment strategy", OFFSET(error_concealment), FF_OPT_TYPE_FLAGS, 3, INT_MIN, INT_MAX, V|D, "ec"},
574
{"guess_mvs", "iterative motion vector (MV) search (slow)", 0, FF_OPT_TYPE_CONST, FF_EC_GUESS_MVS, INT_MIN, INT_MAX, V|D, "ec"},
575
{"deblock", "use strong deblock filter for damaged MBs", 0, FF_OPT_TYPE_CONST, FF_EC_DEBLOCK, INT_MIN, INT_MAX, V|D, "ec"},
576
{"bits_per_sample", NULL, OFFSET(bits_per_sample), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
577
{"pred", "prediction method", OFFSET(prediction_method), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E, "pred"},
578
{"left", NULL, 0, FF_OPT_TYPE_CONST, FF_PRED_LEFT, INT_MIN, INT_MAX, V|E, "pred"},
579
{"plane", NULL, 0, FF_OPT_TYPE_CONST, FF_PRED_PLANE, INT_MIN, INT_MAX, V|E, "pred"},
580
{"median", NULL, 0, FF_OPT_TYPE_CONST, FF_PRED_MEDIAN, INT_MIN, INT_MAX, V|E, "pred"},
581
{"aspect", "sample aspect ratio", OFFSET(sample_aspect_ratio), FF_OPT_TYPE_RATIONAL, DEFAULT, 0, 10, V|E},
582
{"debug", "print specific debug info", OFFSET(debug), FF_OPT_TYPE_FLAGS, DEFAULT, 0, INT_MAX, V|A|S|E|D, "debug"},
583
{"pict", "picture info", 0, FF_OPT_TYPE_CONST, FF_DEBUG_PICT_INFO, INT_MIN, INT_MAX, V|D, "debug"},
584
{"rc", "rate control", 0, FF_OPT_TYPE_CONST, FF_DEBUG_RC, INT_MIN, INT_MAX, V|E, "debug"},
585
{"bitstream", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_BITSTREAM, INT_MIN, INT_MAX, V|D, "debug"},
586
{"mb_type", "macroblock (MB) type", 0, FF_OPT_TYPE_CONST, FF_DEBUG_MB_TYPE, INT_MIN, INT_MAX, V|D, "debug"},
587
{"qp", "per-block quantization parameter (QP)", 0, FF_OPT_TYPE_CONST, FF_DEBUG_QP, INT_MIN, INT_MAX, V|D, "debug"},
588
{"mv", "motion vector", 0, FF_OPT_TYPE_CONST, FF_DEBUG_MV, INT_MIN, INT_MAX, V|D, "debug"},
589
{"dct_coeff", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_DCT_COEFF, INT_MIN, INT_MAX, V|D, "debug"},
590
{"skip", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_SKIP, INT_MIN, INT_MAX, V|D, "debug"},
591
{"startcode", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_STARTCODE, INT_MIN, INT_MAX, V|D, "debug"},
592
{"pts", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_PTS, INT_MIN, INT_MAX, V|D, "debug"},
593
{"er", "error resilience", 0, FF_OPT_TYPE_CONST, FF_DEBUG_ER, INT_MIN, INT_MAX, V|D, "debug"},
594
{"mmco", "memory management control operations (H.264)", 0, FF_OPT_TYPE_CONST, FF_DEBUG_MMCO, INT_MIN, INT_MAX, V|D, "debug"},
595
{"bugs", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_BUGS, INT_MIN, INT_MAX, V|D, "debug"},
596
{"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"},
597
{"vis_mb_type", "visualize block types", 0, FF_OPT_TYPE_CONST, FF_DEBUG_VIS_MB_TYPE, INT_MIN, INT_MAX, V|D, "debug"},
598
{"vismv", "visualize motion vectors (MVs)", OFFSET(debug_mv), FF_OPT_TYPE_INT, DEFAULT, 0, INT_MAX, V|D, "debug_mv"},
599
{"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"},
600
{"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"},
601
{"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"},
602
{"mb_qmin", "obsolete, use qmin", OFFSET(mb_qmin), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
603
{"mb_qmax", "obsolete, use qmax", OFFSET(mb_qmax), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
604
{"cmp", "full pel me compare function", OFFSET(me_cmp), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E, "cmp_func"},
605
{"subcmp", "sub pel me compare function", OFFSET(me_sub_cmp), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E, "cmp_func"},
606
{"mbcmp", "macroblock compare function", OFFSET(mb_cmp), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E, "cmp_func"},
607
{"ildctcmp", "interlaced dct compare function", OFFSET(ildct_cmp), FF_OPT_TYPE_INT, FF_CMP_VSAD, INT_MIN, INT_MAX, V|E, "cmp_func"},
608
{"dia_size", "diamond type & size for motion estimation", OFFSET(dia_size), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
609
{"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},
610
{"preme", "pre motion estimation", OFFSET(pre_me), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
611
{"precmp", "pre motion estimation compare function", OFFSET(me_pre_cmp), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E, "cmp_func"},
612
{"sad", "sum of absolute differences, fast (default)", 0, FF_OPT_TYPE_CONST, FF_CMP_SAD, INT_MIN, INT_MAX, V|E, "cmp_func"},
613
{"sse", "sum of squared errors", 0, FF_OPT_TYPE_CONST, FF_CMP_SSE, INT_MIN, INT_MAX, V|E, "cmp_func"},
614
{"satd", "sum of absolute Hadamard transformed differences", 0, FF_OPT_TYPE_CONST, FF_CMP_SATD, INT_MIN, INT_MAX, V|E, "cmp_func"},
615
{"dct", "sum of absolute DCT transformed differences", 0, FF_OPT_TYPE_CONST, FF_CMP_DCT, INT_MIN, INT_MAX, V|E, "cmp_func"},
616
{"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"},
617
{"bit", "number of bits needed for the block", 0, FF_OPT_TYPE_CONST, FF_CMP_BIT, INT_MIN, INT_MAX, V|E, "cmp_func"},
618
{"rd", "rate distortion optimal, slow", 0, FF_OPT_TYPE_CONST, FF_CMP_RD, INT_MIN, INT_MAX, V|E, "cmp_func"},
619
{"zero", "0", 0, FF_OPT_TYPE_CONST, FF_CMP_ZERO, INT_MIN, INT_MAX, V|E, "cmp_func"},
620
{"vsad", "sum of absolute vertical differences", 0, FF_OPT_TYPE_CONST, FF_CMP_VSAD, INT_MIN, INT_MAX, V|E, "cmp_func"},
621
{"vsse","sum of squared vertical differences", 0, FF_OPT_TYPE_CONST, FF_CMP_VSSE, INT_MIN, INT_MAX, V|E, "cmp_func"},
622
{"nsse", "noise preserving sum of squared differences", 0, FF_OPT_TYPE_CONST, FF_CMP_NSSE, INT_MIN, INT_MAX, V|E, "cmp_func"},
623
#ifdef CONFIG_SNOW_ENCODER
624
{"w53", "5/3 wavelet, only used in snow", 0, FF_OPT_TYPE_CONST, FF_CMP_W53, INT_MIN, INT_MAX, V|E, "cmp_func"},
625
{"w97", "9/7 wavelet, only used in snow", 0, FF_OPT_TYPE_CONST, FF_CMP_W97, INT_MIN, INT_MAX, V|E, "cmp_func"},
626
#endif
627
{"dctmax", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_DCTMAX, INT_MIN, INT_MAX, V|E, "cmp_func"},
628
{"chroma", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_CHROMA, INT_MIN, INT_MAX, V|E, "cmp_func"},
629
{"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},
630
{"subq", "sub pel motion estimation quality", OFFSET(me_subpel_quality), FF_OPT_TYPE_INT, 8, INT_MIN, INT_MAX, V|E},
631
{"dtg_active_format", NULL, OFFSET(dtg_active_format), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
632
{"me_range", "limit motion vectors range (1023 for DivX player)", OFFSET(me_range), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
633
{"ibias", "intra quant bias", OFFSET(intra_quant_bias), FF_OPT_TYPE_INT, FF_DEFAULT_QUANT_BIAS, INT_MIN, INT_MAX, V|E},
634
{"pbias", "inter quant bias", OFFSET(inter_quant_bias), FF_OPT_TYPE_INT, FF_DEFAULT_QUANT_BIAS, INT_MIN, INT_MAX, V|E},
635
{"color_table_id", NULL, OFFSET(color_table_id), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
636
{"internal_buffer_count", NULL, OFFSET(internal_buffer_count), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
637
{"global_quality", NULL, OFFSET(global_quality), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
638
{"coder", NULL, OFFSET(coder_type), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E, "coder"},
639
{"vlc", "variable length coder / huffman coder", 0, FF_OPT_TYPE_CONST, FF_CODER_TYPE_VLC, INT_MIN, INT_MAX, V|E, "coder"},
640
{"ac", "arithmetic coder", 0, FF_OPT_TYPE_CONST, FF_CODER_TYPE_AC, INT_MIN, INT_MAX, V|E, "coder"},
641
{"raw", "raw (no encoding)", 0, FF_OPT_TYPE_CONST, FF_CODER_TYPE_RAW, INT_MIN, INT_MAX, V|E, "coder"},
642
{"rle", "run-length coder", 0, FF_OPT_TYPE_CONST, FF_CODER_TYPE_RLE, INT_MIN, INT_MAX, V|E, "coder"},
643
{"deflate", "deflate-based coder", 0, FF_OPT_TYPE_CONST, FF_CODER_TYPE_DEFLATE, INT_MIN, INT_MAX, V|E, "coder"},
644
{"context", "context model", OFFSET(context_model), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
645
{"slice_flags", NULL, OFFSET(slice_flags), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
646
{"xvmc_acceleration", NULL, OFFSET(xvmc_acceleration), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
647
{"mbd", "macroblock decision algorithm (high quality mode)", OFFSET(mb_decision), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E, "mbd"},
648
{"simple", "use mbcmp (default)", 0, FF_OPT_TYPE_CONST, FF_MB_DECISION_SIMPLE, INT_MIN, INT_MAX, V|E, "mbd"},
649
{"bits", "use fewest bits", 0, FF_OPT_TYPE_CONST, FF_MB_DECISION_BITS, INT_MIN, INT_MAX, V|E, "mbd"},
650
{"rd", "use best rate distortion", 0, FF_OPT_TYPE_CONST, FF_MB_DECISION_RD, INT_MIN, INT_MAX, V|E, "mbd"},
651
{"stream_codec_tag", NULL, OFFSET(stream_codec_tag), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
652
{"sc_threshold", "scene change threshold", OFFSET(scenechange_threshold), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
653
{"lmin", "min lagrange factor (VBR)", OFFSET(lmin), FF_OPT_TYPE_INT,  2*FF_QP2LAMBDA, 0, INT_MAX, V|E},
654
{"lmax", "max lagrange factor (VBR)", OFFSET(lmax), FF_OPT_TYPE_INT, 31*FF_QP2LAMBDA, 0, INT_MAX, V|E},
655
{"nr", "noise reduction", OFFSET(noise_reduction), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
656
{"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},
657
{"inter_threshold", NULL, OFFSET(inter_threshold), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
658
{"flags2", NULL, OFFSET(flags2), FF_OPT_TYPE_FLAGS, CODEC_FLAG2_FASTPSKIP, INT_MIN, INT_MAX, V|A|E|D, "flags2"},
659
{"error", NULL, OFFSET(error_rate), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
660
{"antialias", "MP3 antialias algorithm", OFFSET(antialias_algo), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|D, "aa"},
661
{"auto", NULL, 0, FF_OPT_TYPE_CONST, FF_AA_AUTO, INT_MIN, INT_MAX, V|D, "aa"},
662
{"fastint", NULL, 0, FF_OPT_TYPE_CONST, FF_AA_FASTINT, INT_MIN, INT_MAX, V|D, "aa"},
663
{"int", NULL, 0, FF_OPT_TYPE_CONST, FF_AA_INT, INT_MIN, INT_MAX, V|D, "aa"},
664
{"float", NULL, 0, FF_OPT_TYPE_CONST, FF_AA_FLOAT, INT_MIN, INT_MAX, V|D, "aa"},
665
{"qns", "quantizer noise shaping", OFFSET(quantizer_noise_shaping), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
666
{"threads", NULL, OFFSET(thread_count), FF_OPT_TYPE_INT, 1, INT_MIN, INT_MAX, V|E|D},
667
{"me_threshold", "motion estimaton threshold", OFFSET(me_threshold), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
668
{"mb_threshold", "macroblock threshold", OFFSET(mb_threshold), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
669
{"dc", "intra_dc_precision", OFFSET(intra_dc_precision), FF_OPT_TYPE_INT, 0, INT_MIN, INT_MAX, V|E},
670
{"nssew", "nsse weight", OFFSET(nsse_weight), FF_OPT_TYPE_INT, 8, INT_MIN, INT_MAX, V|E},
671
{"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},
672
{"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},
673
{"profile", NULL, OFFSET(profile), FF_OPT_TYPE_INT, FF_PROFILE_UNKNOWN, INT_MIN, INT_MAX, V|A|E, "profile"},
674
{"unknown", NULL, 0, FF_OPT_TYPE_CONST, FF_PROFILE_UNKNOWN, INT_MIN, INT_MAX, V|A|E, "profile"},
675
{"aac_main", NULL, 0, FF_OPT_TYPE_CONST, FF_PROFILE_AAC_MAIN, INT_MIN, INT_MAX, A|E, "profile"},
676
{"aac_low", NULL, 0, FF_OPT_TYPE_CONST, FF_PROFILE_AAC_LOW, INT_MIN, INT_MAX, A|E, "profile"},
677
{"aac_ssr", NULL, 0, FF_OPT_TYPE_CONST, FF_PROFILE_AAC_SSR, INT_MIN, INT_MAX, A|E, "profile"},
678
{"aac_ltp", NULL, 0, FF_OPT_TYPE_CONST, FF_PROFILE_AAC_LTP, INT_MIN, INT_MAX, A|E, "profile"},
679
{"level", NULL, OFFSET(level), FF_OPT_TYPE_INT, FF_LEVEL_UNKNOWN, INT_MIN, INT_MAX, V|A|E, "level"},
680
{"unknown", NULL, 0, FF_OPT_TYPE_CONST, FF_LEVEL_UNKNOWN, INT_MIN, INT_MAX, V|A|E, "level"},
681
{"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},
682
{"skip_threshold", "frame skip threshold", OFFSET(frame_skip_threshold), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
683
{"skip_factor", "frame skip factor", OFFSET(frame_skip_factor), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
684
{"skip_exp", "frame skip exponent", OFFSET(frame_skip_exp), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
685
{"skipcmp", "frame skip compare function", OFFSET(frame_skip_cmp), FF_OPT_TYPE_INT, FF_CMP_DCTMAX, INT_MIN, INT_MAX, V|E, "cmp_func"},
686
{"border_mask", "increases the quantizer for macroblocks close to borders", OFFSET(border_masking), FF_OPT_TYPE_FLOAT, DEFAULT, -FLT_MAX, FLT_MAX, V|E},
687
{"mblmin", "min macroblock lagrange factor (VBR)", OFFSET(mb_lmin), FF_OPT_TYPE_INT, FF_QP2LAMBDA * 2, 1, FF_LAMBDA_MAX, V|E},
688
{"mblmax", "max macroblock lagrange factor (VBR)", OFFSET(mb_lmax), FF_OPT_TYPE_INT, FF_QP2LAMBDA * 31, 1, FF_LAMBDA_MAX, V|E},
689
{"mepc", "motion estimation bitrate penalty compensation (1.0 = 256)", OFFSET(me_penalty_compensation), FF_OPT_TYPE_INT, 256, INT_MIN, INT_MAX, V|E},
690
{"bidir_refine", "refine the two motion vectors used in bidirectional macroblocks", OFFSET(bidir_refine), FF_OPT_TYPE_INT, DEFAULT, 0, 4, V|E},
691
{"brd_scale", "downscales frames for dynamic B-frame decision", OFFSET(brd_scale), FF_OPT_TYPE_INT, DEFAULT, 0, 10, V|E},
692
{"crf", "enables constant quality mode, and selects the quality (x264)", OFFSET(crf), FF_OPT_TYPE_FLOAT, DEFAULT, 0, 51, V|E},
693
{"cqp", "constant quantization parameter rate control method", OFFSET(cqp), FF_OPT_TYPE_INT, -1, INT_MIN, INT_MAX, V|E},
694
{"keyint_min", "minimum interval between IDR-frames (x264)", OFFSET(keyint_min), FF_OPT_TYPE_INT, 25, INT_MIN, INT_MAX, V|E},
695
{"refs", "reference frames to consider for motion compensation (Snow)", OFFSET(refs), FF_OPT_TYPE_INT, 1, INT_MIN, INT_MAX, V|E},
696
{"chromaoffset", "chroma qp offset from luma", OFFSET(chromaoffset), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
697
{"bframebias", "influences how often B-frames are used", OFFSET(bframebias), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
698
{"trellis", "rate-distortion optimal quantization", OFFSET(trellis), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|A|E},
699
{"directpred", "direct mv prediction mode - 0 (none), 1 (spatial), 2 (temporal)", OFFSET(directpred), FF_OPT_TYPE_INT, 2, INT_MIN, INT_MAX, V|E},
700
{"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"},
701
{"wpred", "weighted biprediction for b-frames (H.264)", 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_WPRED, INT_MIN, INT_MAX, V|E, "flags2"},
702
{"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"},
703
{"dct8x8", "high profile 8x8 transform (H.264)", 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_8X8DCT, INT_MIN, INT_MAX, V|E, "flags2"},
704
{"fastpskip", "fast pskip (H.264)", 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_FASTPSKIP, INT_MIN, INT_MAX, V|E, "flags2"},
705
{"aud", "access unit delimiters (H.264)", 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_AUD, INT_MIN, INT_MAX, V|E, "flags2"},
706
{"brdo", "b-frame rate-distortion optimization", 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_BRDO, INT_MIN, INT_MAX, V|E, "flags2"},
707
{"skiprd", "RD optimal MB level residual skipping", 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_SKIP_RD, INT_MIN, INT_MAX, V|E, "flags2"},
708
{"complexityblur", "reduce fluctuations in qp (before curve compression)", OFFSET(complexityblur), FF_OPT_TYPE_FLOAT, 20.0, FLT_MIN, FLT_MAX, V|E},
709
{"deblockalpha", "in-loop deblocking filter alphac0 parameter", OFFSET(deblockalpha), FF_OPT_TYPE_INT, DEFAULT, -6, 6, V|E},
710
{"deblockbeta", "in-loop deblocking filter beta parameter", OFFSET(deblockbeta), FF_OPT_TYPE_INT, DEFAULT, -6, 6, V|E},
711
{"partitions", "macroblock subpartition sizes to consider", OFFSET(partitions), FF_OPT_TYPE_FLAGS, DEFAULT, INT_MIN, INT_MAX, V|E, "partitions"},
712
{"parti4x4", NULL, 0, FF_OPT_TYPE_CONST, X264_PART_I4X4, INT_MIN, INT_MAX, V|E, "partitions"},
713
{"parti8x8", NULL, 0, FF_OPT_TYPE_CONST, X264_PART_I8X8, INT_MIN, INT_MAX, V|E, "partitions"},
714
{"partp4x4", NULL, 0, FF_OPT_TYPE_CONST, X264_PART_P4X4, INT_MIN, INT_MAX, V|E, "partitions"},
715
{"partp8x8", NULL, 0, FF_OPT_TYPE_CONST, X264_PART_P8X8, INT_MIN, INT_MAX, V|E, "partitions"},
716
{"partb8x8", NULL, 0, FF_OPT_TYPE_CONST, X264_PART_B8X8, INT_MIN, INT_MAX, V|E, "partitions"},
717
{"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},
718
{"mv0_threshold", NULL, OFFSET(mv0_threshold), FF_OPT_TYPE_INT, 256, 0, INT_MAX, V|E},
719
{"ivlc", "intra vlc table", 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_INTRA_VLC, INT_MIN, INT_MAX, V|E, "flags2"},
720
{"b_sensitivity", "adjusts sensitivity of b_frame_strategy 1", OFFSET(b_sensitivity), FF_OPT_TYPE_INT, 40, 1, INT_MAX, V|E},
721
{"compression_level", NULL, OFFSET(compression_level), FF_OPT_TYPE_INT, FF_COMPRESSION_DEFAULT, INT_MIN, INT_MAX, V|A|E},
722
{"use_lpc", "sets whether to use LPC mode (FLAC)", OFFSET(use_lpc), FF_OPT_TYPE_INT, -1, INT_MIN, INT_MAX, A|E},
723
{"lpc_coeff_precision", "LPC coefficient precision (FLAC)", OFFSET(lpc_coeff_precision), FF_OPT_TYPE_INT, DEFAULT, 0, INT_MAX, A|E},
724
{"min_prediction_order", NULL, OFFSET(min_prediction_order), FF_OPT_TYPE_INT, -1, INT_MIN, INT_MAX, A|E},
725
{"max_prediction_order", NULL, OFFSET(max_prediction_order), FF_OPT_TYPE_INT, -1, INT_MIN, INT_MAX, A|E},
726
{"prediction_order_method", "search method for selecting prediction order", OFFSET(prediction_order_method), FF_OPT_TYPE_INT, -1, INT_MIN, INT_MAX, A|E},
727
{"min_partition_order", NULL, OFFSET(min_partition_order), FF_OPT_TYPE_INT, -1, INT_MIN, INT_MAX, A|E},
728
{"max_partition_order", NULL, OFFSET(max_partition_order), FF_OPT_TYPE_INT, -1, INT_MIN, INT_MAX, A|E},
729
{"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},
730
{"drop_frame_timecode", NULL, 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_DROP_FRAME_TIMECODE, INT_MIN, INT_MAX, V|E, "flags2"},
731
{"non_linear_q", "use non linear quantizer", 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_NON_LINEAR_QUANT, INT_MIN, INT_MAX, V|E, "flags2"},
732
{NULL},
733
};
734

    
735
#undef A
736
#undef V
737
#undef S
738
#undef E
739
#undef D
740
#undef DEFAULT
741

    
742
static AVClass av_codec_context_class = { "AVCodecContext", context_to_name, options };
743

    
744
void avcodec_get_context_defaults2(AVCodecContext *s, enum CodecType codec_type){
745
    int flags=0;
746
    memset(s, 0, sizeof(AVCodecContext));
747

    
748
    s->av_class= &av_codec_context_class;
749

    
750
    if(codec_type == CODEC_TYPE_AUDIO)
751
        flags= AV_OPT_FLAG_AUDIO_PARAM;
752
    else if(codec_type == CODEC_TYPE_VIDEO)
753
        flags= AV_OPT_FLAG_VIDEO_PARAM;
754
    else if(codec_type == CODEC_TYPE_SUBTITLE)
755
        flags= AV_OPT_FLAG_SUBTITLE_PARAM;
756
    av_opt_set_defaults2(s, flags, flags);
757

    
758
    s->rc_eq= "tex^qComp";
759
    s->time_base= (AVRational){0,1};
760
    s->get_buffer= avcodec_default_get_buffer;
761
    s->release_buffer= avcodec_default_release_buffer;
762
    s->get_format= avcodec_default_get_format;
763
    s->execute= avcodec_default_execute;
764
    s->sample_aspect_ratio= (AVRational){0,1};
765
    s->pix_fmt= PIX_FMT_NONE;
766
    s->sample_fmt= SAMPLE_FMT_S16; // FIXME: set to NONE
767

    
768
    s->palctrl = NULL;
769
    s->reget_buffer= avcodec_default_reget_buffer;
770
}
771

    
772
AVCodecContext *avcodec_alloc_context2(enum CodecType codec_type){
773
    AVCodecContext *avctx= av_malloc(sizeof(AVCodecContext));
774

    
775
    if(avctx==NULL) return NULL;
776

    
777
    avcodec_get_context_defaults2(avctx, codec_type);
778

    
779
    return avctx;
780
}
781

    
782
void avcodec_get_context_defaults(AVCodecContext *s){
783
    avcodec_get_context_defaults2(s, CODEC_TYPE_UNKNOWN);
784
}
785

    
786
AVCodecContext *avcodec_alloc_context(void){
787
    return avcodec_alloc_context2(CODEC_TYPE_UNKNOWN);
788
}
789

    
790
void avcodec_get_frame_defaults(AVFrame *pic){
791
    memset(pic, 0, sizeof(AVFrame));
792

    
793
    pic->pts= AV_NOPTS_VALUE;
794
    pic->key_frame= 1;
795
}
796

    
797
AVFrame *avcodec_alloc_frame(void){
798
    AVFrame *pic= av_malloc(sizeof(AVFrame));
799

    
800
    if(pic==NULL) return NULL;
801

    
802
    avcodec_get_frame_defaults(pic);
803

    
804
    return pic;
805
}
806

    
807
int avcodec_open(AVCodecContext *avctx, AVCodec *codec)
808
{
809
    int ret= -1;
810

    
811
    entangled_thread_counter++;
812
    if(entangled_thread_counter != 1){
813
        av_log(avctx, AV_LOG_ERROR, "insufficient thread locking around avcodec_open/close()\n");
814
        goto end;
815
    }
816

    
817
    if(avctx->codec)
818
        goto end;
819

    
820
    if (codec->priv_data_size > 0) {
821
        avctx->priv_data = av_mallocz(codec->priv_data_size);
822
        if (!avctx->priv_data)
823
            goto end;
824
    } else {
825
        avctx->priv_data = NULL;
826
    }
827

    
828
    if(avctx->coded_width && avctx->coded_height)
829
        avcodec_set_dimensions(avctx, avctx->coded_width, avctx->coded_height);
830
    else if(avctx->width && avctx->height)
831
        avcodec_set_dimensions(avctx, avctx->width, avctx->height);
832

    
833
    if((avctx->coded_width||avctx->coded_height) && avcodec_check_dimensions(avctx,avctx->coded_width,avctx->coded_height)){
834
        av_freep(&avctx->priv_data);
835
        goto end;
836
    }
837

    
838
    avctx->codec = codec;
839
    avctx->codec_id = codec->id;
840
    avctx->frame_number = 0;
841
    if(avctx->codec->init){
842
        ret = avctx->codec->init(avctx);
843
        if (ret < 0) {
844
            av_freep(&avctx->priv_data);
845
            avctx->codec= NULL;
846
            goto end;
847
        }
848
    }
849
    ret=0;
850
end:
851
    entangled_thread_counter--;
852
    return ret;
853
}
854

    
855
int avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size,
856
                         const short *samples)
857
{
858
    if(buf_size < FF_MIN_BUFFER_SIZE && 0){
859
        av_log(avctx, AV_LOG_ERROR, "buffer smaller than minimum size\n");
860
        return -1;
861
    }
862
    if((avctx->codec->capabilities & CODEC_CAP_DELAY) || samples){
863
        int ret = avctx->codec->encode(avctx, buf, buf_size, (void *)samples);
864
        avctx->frame_number++;
865
        return ret;
866
    }else
867
        return 0;
868
}
869

    
870
int avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
871
                         const AVFrame *pict)
872
{
873
    if(buf_size < FF_MIN_BUFFER_SIZE){
874
        av_log(avctx, AV_LOG_ERROR, "buffer smaller than minimum size\n");
875
        return -1;
876
    }
877
    if(avcodec_check_dimensions(avctx,avctx->width,avctx->height))
878
        return -1;
879
    if((avctx->codec->capabilities & CODEC_CAP_DELAY) || pict){
880
        int ret = avctx->codec->encode(avctx, buf, buf_size, (void *)pict);
881
        avctx->frame_number++;
882
        emms_c(); //needed to avoid an emms_c() call before every return;
883

    
884
        return ret;
885
    }else
886
        return 0;
887
}
888

    
889
int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size,
890
                            const AVSubtitle *sub)
891
{
892
    int ret;
893
    ret = avctx->codec->encode(avctx, buf, buf_size, (void *)sub);
894
    avctx->frame_number++;
895
    return ret;
896
}
897

    
898
int avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture,
899
                         int *got_picture_ptr,
900
                         uint8_t *buf, int buf_size)
901
{
902
    int ret;
903

    
904
    *got_picture_ptr= 0;
905
    if((avctx->coded_width||avctx->coded_height) && avcodec_check_dimensions(avctx,avctx->coded_width,avctx->coded_height))
906
        return -1;
907
    if((avctx->codec->capabilities & CODEC_CAP_DELAY) || buf_size){
908
        ret = avctx->codec->decode(avctx, picture, got_picture_ptr,
909
                                buf, buf_size);
910

    
911
        emms_c(); //needed to avoid an emms_c() call before every return;
912

    
913
        if (*got_picture_ptr)
914
            avctx->frame_number++;
915
    }else
916
        ret= 0;
917

    
918
    return ret;
919
}
920

    
921
int avcodec_decode_audio2(AVCodecContext *avctx, int16_t *samples,
922
                         int *frame_size_ptr,
923
                         uint8_t *buf, int buf_size)
924
{
925
    int ret;
926

    
927
    if((avctx->codec->capabilities & CODEC_CAP_DELAY) || buf_size){
928
        //FIXME remove the check below _after_ ensuring that all audio check that the available space is enough
929
        if(*frame_size_ptr < AVCODEC_MAX_AUDIO_FRAME_SIZE){
930
            av_log(avctx, AV_LOG_ERROR, "buffer smaller than AVCODEC_MAX_AUDIO_FRAME_SIZE\n");
931
            return -1;
932
        }
933
        if(*frame_size_ptr < FF_MIN_BUFFER_SIZE ||
934
        *frame_size_ptr < avctx->channels * avctx->frame_size * sizeof(int16_t) ||
935
        *frame_size_ptr < buf_size){
936
            av_log(avctx, AV_LOG_ERROR, "buffer %d too small\n", *frame_size_ptr);
937
            return -1;
938
        }
939

    
940
        ret = avctx->codec->decode(avctx, samples, frame_size_ptr,
941
                                buf, buf_size);
942
        avctx->frame_number++;
943
    }else{
944
        ret= 0;
945
        *frame_size_ptr=0;
946
    }
947
    return ret;
948
}
949

    
950
#if LIBAVCODEC_VERSION_INT < ((52<<16)+(0<<8)+0)
951
int avcodec_decode_audio(AVCodecContext *avctx, int16_t *samples,
952
                         int *frame_size_ptr,
953
                         uint8_t *buf, int buf_size){
954
    *frame_size_ptr= AVCODEC_MAX_AUDIO_FRAME_SIZE;
955
    return avcodec_decode_audio2(avctx, samples, frame_size_ptr, buf, buf_size);
956
}
957
#endif
958

    
959
int avcodec_decode_subtitle(AVCodecContext *avctx, AVSubtitle *sub,
960
                            int *got_sub_ptr,
961
                            const uint8_t *buf, int buf_size)
962
{
963
    int ret;
964

    
965
    *got_sub_ptr = 0;
966
    ret = avctx->codec->decode(avctx, sub, got_sub_ptr,
967
                               (uint8_t *)buf, buf_size);
968
    if (*got_sub_ptr)
969
        avctx->frame_number++;
970
    return ret;
971
}
972

    
973
int avcodec_close(AVCodecContext *avctx)
974
{
975
    entangled_thread_counter++;
976
    if(entangled_thread_counter != 1){
977
        av_log(avctx, AV_LOG_ERROR, "insufficient thread locking around avcodec_open/close()\n");
978
        entangled_thread_counter--;
979
        return -1;
980
    }
981

    
982
    if (avctx->codec->close)
983
        avctx->codec->close(avctx);
984
    avcodec_default_free_buffers(avctx);
985
    av_freep(&avctx->priv_data);
986
    avctx->codec = NULL;
987
    entangled_thread_counter--;
988
    return 0;
989
}
990

    
991
AVCodec *avcodec_find_encoder(enum CodecID id)
992
{
993
    AVCodec *p;
994
    p = first_avcodec;
995
    while (p) {
996
        if (p->encode != NULL && p->id == id)
997
            return p;
998
        p = p->next;
999
    }
1000
    return NULL;
1001
}
1002

    
1003
AVCodec *avcodec_find_encoder_by_name(const char *name)
1004
{
1005
    AVCodec *p;
1006
    p = first_avcodec;
1007
    while (p) {
1008
        if (p->encode != NULL && strcmp(name,p->name) == 0)
1009
            return p;
1010
        p = p->next;
1011
    }
1012
    return NULL;
1013
}
1014

    
1015
AVCodec *avcodec_find_decoder(enum CodecID id)
1016
{
1017
    AVCodec *p;
1018
    p = first_avcodec;
1019
    while (p) {
1020
        if (p->decode != NULL && p->id == id)
1021
            return p;
1022
        p = p->next;
1023
    }
1024
    return NULL;
1025
}
1026

    
1027
AVCodec *avcodec_find_decoder_by_name(const char *name)
1028
{
1029
    AVCodec *p;
1030
    p = first_avcodec;
1031
    while (p) {
1032
        if (p->decode != NULL && strcmp(name,p->name) == 0)
1033
            return p;
1034
        p = p->next;
1035
    }
1036
    return NULL;
1037
}
1038

    
1039
void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)
1040
{
1041
    const char *codec_name;
1042
    AVCodec *p;
1043
    char buf1[32];
1044
    char channels_str[100];
1045
    int bitrate;
1046

    
1047
    if (encode)
1048
        p = avcodec_find_encoder(enc->codec_id);
1049
    else
1050
        p = avcodec_find_decoder(enc->codec_id);
1051

    
1052
    if (p) {
1053
        codec_name = p->name;
1054
        if (!encode && enc->codec_id == CODEC_ID_MP3) {
1055
            if (enc->sub_id == 2)
1056
                codec_name = "mp2";
1057
            else if (enc->sub_id == 1)
1058
                codec_name = "mp1";
1059
        }
1060
    } else if (enc->codec_id == CODEC_ID_MPEG2TS) {
1061
        /* fake mpeg2 transport stream codec (currently not
1062
           registered) */
1063
        codec_name = "mpeg2ts";
1064
    } else if (enc->codec_name[0] != '\0') {
1065
        codec_name = enc->codec_name;
1066
    } else {
1067
        /* output avi tags */
1068
        if(   isprint(enc->codec_tag&0xFF) && isprint((enc->codec_tag>>8)&0xFF)
1069
           && isprint((enc->codec_tag>>16)&0xFF) && isprint((enc->codec_tag>>24)&0xFF)){
1070
            snprintf(buf1, sizeof(buf1), "%c%c%c%c / 0x%04X",
1071
                     enc->codec_tag & 0xff,
1072
                     (enc->codec_tag >> 8) & 0xff,
1073
                     (enc->codec_tag >> 16) & 0xff,
1074
                     (enc->codec_tag >> 24) & 0xff,
1075
                      enc->codec_tag);
1076
        } else {
1077
            snprintf(buf1, sizeof(buf1), "0x%04x", enc->codec_tag);
1078
        }
1079
        codec_name = buf1;
1080
    }
1081

    
1082
    switch(enc->codec_type) {
1083
    case CODEC_TYPE_VIDEO:
1084
        snprintf(buf, buf_size,
1085
                 "Video: %s%s",
1086
                 codec_name, enc->mb_decision ? " (hq)" : "");
1087
        if (enc->pix_fmt != PIX_FMT_NONE) {
1088
            snprintf(buf + strlen(buf), buf_size - strlen(buf),
1089
                     ", %s",
1090
                     avcodec_get_pix_fmt_name(enc->pix_fmt));
1091
        }
1092
        if (enc->width) {
1093
            snprintf(buf + strlen(buf), buf_size - strlen(buf),
1094
                     ", %dx%d",
1095
                     enc->width, enc->height);
1096
            if(av_log_level >= AV_LOG_DEBUG){
1097
                int g= ff_gcd(enc->time_base.num, enc->time_base.den);
1098
                snprintf(buf + strlen(buf), buf_size - strlen(buf),
1099
                     ", %d/%d",
1100
                     enc->time_base.num/g, enc->time_base.den/g);
1101
            }
1102
        }
1103
        if (encode) {
1104
            snprintf(buf + strlen(buf), buf_size - strlen(buf),
1105
                     ", q=%d-%d", enc->qmin, enc->qmax);
1106
        }
1107
        bitrate = enc->bit_rate;
1108
        break;
1109
    case CODEC_TYPE_AUDIO:
1110
        snprintf(buf, buf_size,
1111
                 "Audio: %s",
1112
                 codec_name);
1113
        switch (enc->channels) {
1114
            case 1:
1115
                strcpy(channels_str, "mono");
1116
                break;
1117
            case 2:
1118
                strcpy(channels_str, "stereo");
1119
                break;
1120
            case 6:
1121
                strcpy(channels_str, "5:1");
1122
                break;
1123
            default:
1124
                snprintf(channels_str, sizeof(channels_str), "%d channels", enc->channels);
1125
                break;
1126
        }
1127
        if (enc->sample_rate) {
1128
            snprintf(buf + strlen(buf), buf_size - strlen(buf),
1129
                     ", %d Hz, %s",
1130
                     enc->sample_rate,
1131
                     channels_str);
1132
        }
1133

    
1134
        /* for PCM codecs, compute bitrate directly */
1135
        switch(enc->codec_id) {
1136
        case CODEC_ID_PCM_S32LE:
1137
        case CODEC_ID_PCM_S32BE:
1138
        case CODEC_ID_PCM_U32LE:
1139
        case CODEC_ID_PCM_U32BE:
1140
            bitrate = enc->sample_rate * enc->channels * 32;
1141
            break;
1142
        case CODEC_ID_PCM_S24LE:
1143
        case CODEC_ID_PCM_S24BE:
1144
        case CODEC_ID_PCM_U24LE:
1145
        case CODEC_ID_PCM_U24BE:
1146
        case CODEC_ID_PCM_S24DAUD:
1147
            bitrate = enc->sample_rate * enc->channels * 24;
1148
            break;
1149
        case CODEC_ID_PCM_S16LE:
1150
        case CODEC_ID_PCM_S16BE:
1151
        case CODEC_ID_PCM_U16LE:
1152
        case CODEC_ID_PCM_U16BE:
1153
            bitrate = enc->sample_rate * enc->channels * 16;
1154
            break;
1155
        case CODEC_ID_PCM_S8:
1156
        case CODEC_ID_PCM_U8:
1157
        case CODEC_ID_PCM_ALAW:
1158
        case CODEC_ID_PCM_MULAW:
1159
            bitrate = enc->sample_rate * enc->channels * 8;
1160
            break;
1161
        default:
1162
            bitrate = enc->bit_rate;
1163
            break;
1164
        }
1165
        break;
1166
    case CODEC_TYPE_DATA:
1167
        snprintf(buf, buf_size, "Data: %s", codec_name);
1168
        bitrate = enc->bit_rate;
1169
        break;
1170
    case CODEC_TYPE_SUBTITLE:
1171
        snprintf(buf, buf_size, "Subtitle: %s", codec_name);
1172
        bitrate = enc->bit_rate;
1173
        break;
1174
    default:
1175
        snprintf(buf, buf_size, "Invalid Codec type %d", enc->codec_type);
1176
        return;
1177
    }
1178
    if (encode) {
1179
        if (enc->flags & CODEC_FLAG_PASS1)
1180
            snprintf(buf + strlen(buf), buf_size - strlen(buf),
1181
                     ", pass 1");
1182
        if (enc->flags & CODEC_FLAG_PASS2)
1183
            snprintf(buf + strlen(buf), buf_size - strlen(buf),
1184
                     ", pass 2");
1185
    }
1186
    if (bitrate != 0) {
1187
        snprintf(buf + strlen(buf), buf_size - strlen(buf),
1188
                 ", %d kb/s", bitrate / 1000);
1189
    }
1190
}
1191

    
1192
unsigned avcodec_version( void )
1193
{
1194
  return LIBAVCODEC_VERSION_INT;
1195
}
1196

    
1197
unsigned avcodec_build( void )
1198
{
1199
  return LIBAVCODEC_BUILD;
1200
}
1201

    
1202
static void init_crcs(void){
1203
#if LIBAVUTIL_VERSION_INT  < (50<<16)
1204
    av_crc04C11DB7= av_mallocz_static(sizeof(AVCRC) * 257);
1205
    av_crc8005    = av_mallocz_static(sizeof(AVCRC) * 257);
1206
    av_crc07      = av_mallocz_static(sizeof(AVCRC) * 257);
1207
#endif
1208
    av_crc_init(av_crc04C11DB7, 0, 32, 0x04c11db7, sizeof(AVCRC)*257);
1209
    av_crc_init(av_crc8005    , 0, 16, 0x8005    , sizeof(AVCRC)*257);
1210
    av_crc_init(av_crc07      , 0,  8, 0x07      , sizeof(AVCRC)*257);
1211
}
1212

    
1213
void avcodec_init(void)
1214
{
1215
    static int inited = 0;
1216

    
1217
    if (inited != 0)
1218
        return;
1219
    inited = 1;
1220

    
1221
    dsputil_static_init();
1222
    init_crcs();
1223
}
1224

    
1225
void avcodec_flush_buffers(AVCodecContext *avctx)
1226
{
1227
    if(avctx->codec->flush)
1228
        avctx->codec->flush(avctx);
1229
}
1230

    
1231
void avcodec_default_free_buffers(AVCodecContext *s){
1232
    int i, j;
1233

    
1234
    if(s->internal_buffer==NULL) return;
1235

    
1236
    for(i=0; i<INTERNAL_BUFFER_SIZE; i++){
1237
        InternalBuffer *buf= &((InternalBuffer*)s->internal_buffer)[i];
1238
        for(j=0; j<4; j++){
1239
            av_freep(&buf->base[j]);
1240
            buf->data[j]= NULL;
1241
        }
1242
    }
1243
    av_freep(&s->internal_buffer);
1244

    
1245
    s->internal_buffer_count=0;
1246
}
1247

    
1248
char av_get_pict_type_char(int pict_type){
1249
    switch(pict_type){
1250
    case I_TYPE: return 'I';
1251
    case P_TYPE: return 'P';
1252
    case B_TYPE: return 'B';
1253
    case S_TYPE: return 'S';
1254
    case SI_TYPE:return 'i';
1255
    case SP_TYPE:return 'p';
1256
    default:     return '?';
1257
    }
1258
}
1259

    
1260
int av_get_bits_per_sample(enum CodecID codec_id){
1261
    switch(codec_id){
1262
    case CODEC_ID_ADPCM_SBPRO_2:
1263
        return 2;
1264
    case CODEC_ID_ADPCM_SBPRO_3:
1265
        return 3;
1266
    case CODEC_ID_ADPCM_SBPRO_4:
1267
    case CODEC_ID_ADPCM_CT:
1268
        return 4;
1269
    case CODEC_ID_PCM_ALAW:
1270
    case CODEC_ID_PCM_MULAW:
1271
    case CODEC_ID_PCM_S8:
1272
    case CODEC_ID_PCM_U8:
1273
        return 8;
1274
    case CODEC_ID_PCM_S16BE:
1275
    case CODEC_ID_PCM_S16LE:
1276
    case CODEC_ID_PCM_U16BE:
1277
    case CODEC_ID_PCM_U16LE:
1278
        return 16;
1279
    case CODEC_ID_PCM_S24DAUD:
1280
    case CODEC_ID_PCM_S24BE:
1281
    case CODEC_ID_PCM_S24LE:
1282
    case CODEC_ID_PCM_U24BE:
1283
    case CODEC_ID_PCM_U24LE:
1284
        return 24;
1285
    case CODEC_ID_PCM_S32BE:
1286
    case CODEC_ID_PCM_S32LE:
1287
    case CODEC_ID_PCM_U32BE:
1288
    case CODEC_ID_PCM_U32LE:
1289
        return 32;
1290
    default:
1291
        return 0;
1292
    }
1293
}
1294

    
1295
#if !defined(HAVE_THREADS)
1296
int avcodec_thread_init(AVCodecContext *s, int thread_count){
1297
    return -1;
1298
}
1299
#endif
1300

    
1301
unsigned int av_xiphlacing(unsigned char *s, unsigned int v)
1302
{
1303
    unsigned int n = 0;
1304

    
1305
    while(v >= 0xff) {
1306
        *s++ = 0xff;
1307
        v -= 0xff;
1308
        n++;
1309
    }
1310
    *s = v;
1311
    n++;
1312
    return n;
1313
}
1314

    
1315
/* Wrapper to work around the lack of mkstemp() on mingw/cygin.
1316
 * Also, tries to create file in /tmp first, if possible.
1317
 * *prefix can be a character constant; *filename will be allocated internally.
1318
 * Returns file descriptor of opened file (or -1 on error)
1319
 * and opened file name in **filename. */
1320
int av_tempfile(char *prefix, char **filename) {
1321
    int fd=-1;
1322
#ifdef __MINGW32__
1323
    *filename = tempnam(".", prefix);
1324
#else
1325
    size_t len = strlen(prefix) + 12; /* room for "/tmp/" and "XXXXXX\0" */
1326
    *filename = av_malloc(len);
1327
#endif
1328
    /* -----common section-----*/
1329
    if (*filename == NULL) {
1330
        av_log(NULL, AV_LOG_ERROR, "ff_tempfile: Cannot allocate file name\n");
1331
        return -1;
1332
    }
1333
#ifdef __MINGW32__
1334
    fd = open(*filename, _O_RDWR | _O_BINARY | _O_CREAT, 0444);
1335
#else
1336
    snprintf(*filename, len, "/tmp/%sXXXXXX", prefix);
1337
    fd = mkstemp(*filename);
1338
    if (fd < 0) {
1339
        snprintf(*filename, len, "./%sXXXXXX", prefix);
1340
        fd = mkstemp(*filename);
1341
    }
1342
#endif
1343
    /* -----common section-----*/
1344
    if (fd < 0) {
1345
        av_log(NULL, AV_LOG_ERROR, "ff_tempfile: Cannot open temporary file %s\n", *filename);
1346
        return -1;
1347
    }
1348
    return fd; /* success */
1349
}
1350

    
1351
typedef struct {
1352
    const char *abv;
1353
    int width, height;
1354
    int frame_rate, frame_rate_base;
1355
} AbvEntry;
1356

    
1357
static AbvEntry frame_abvs[] = {
1358
    { "ntsc",      720, 480, 30000, 1001 },
1359
    { "pal",       720, 576,    25,    1 },
1360
    { "qntsc",     352, 240, 30000, 1001 }, /* VCD compliant NTSC */
1361
    { "qpal",      352, 288,    25,    1 }, /* VCD compliant PAL */
1362
    { "sntsc",     640, 480, 30000, 1001 }, /* square pixel NTSC */
1363
    { "spal",      768, 576,    25,    1 }, /* square pixel PAL */
1364
    { "film",      352, 240,    24,    1 },
1365
    { "ntsc-film", 352, 240, 24000, 1001 },
1366
    { "sqcif",     128,  96,     0,    0 },
1367
    { "qcif",      176, 144,     0,    0 },
1368
    { "cif",       352, 288,     0,    0 },
1369
    { "4cif",      704, 576,     0,    0 },
1370
    { "qqvga",     160, 120,     0,    0 },
1371
    { "qvga",      320, 240,     0,    0 },
1372
    { "vga",       640, 480,     0,    0 },
1373
    { "svga",      800, 600,     0,    0 },
1374
    { "xga",      1024, 768,     0,    0 },
1375
    { "uxga",     1600,1200,     0,    0 },
1376
    { "qxga",     2048,1536,     0,    0 },
1377
    { "sxga",     1280,1024,     0,    0 },
1378
    { "qsxga",    2560,2048,     0,    0 },
1379
    { "hsxga",    5120,4096,     0,    0 },
1380
    { "wvga",      852, 480,     0,    0 },
1381
    { "wxga",     1366, 768,     0,    0 },
1382
    { "wsxga",    1600,1024,     0,    0 },
1383
    { "wuxga",    1920,1200,     0,    0 },
1384
    { "woxga",    2560,1600,     0,    0 },
1385
    { "wqsxga",   3200,2048,     0,    0 },
1386
    { "wquxga",   3840,2400,     0,    0 },
1387
    { "whsxga",   6400,4096,     0,    0 },
1388
    { "whuxga",   7680,4800,     0,    0 },
1389
    { "cga",       320, 200,     0,    0 },
1390
    { "ega",       640, 350,     0,    0 },
1391
    { "hd480",     852, 480,     0,    0 },
1392
    { "hd720",    1280, 720,     0,    0 },
1393
    { "hd1080",   1920,1080,     0,    0 },
1394
};
1395

    
1396
int av_parse_video_frame_size(int *width_ptr, int *height_ptr, const char *str)
1397
{
1398
    int i;
1399
    int n = sizeof(frame_abvs) / sizeof(AbvEntry);
1400
    const char *p;
1401
    int frame_width = 0, frame_height = 0;
1402

    
1403
    for(i=0;i<n;i++) {
1404
        if (!strcmp(frame_abvs[i].abv, str)) {
1405
            frame_width = frame_abvs[i].width;
1406
            frame_height = frame_abvs[i].height;
1407
            break;
1408
        }
1409
    }
1410
    if (i == n) {
1411
        p = str;
1412
        frame_width = strtol(p, (char **)&p, 10);
1413
        if (*p)
1414
            p++;
1415
        frame_height = strtol(p, (char **)&p, 10);
1416
    }
1417
    if (frame_width <= 0 || frame_height <= 0)
1418
        return -1;
1419
    *width_ptr = frame_width;
1420
    *height_ptr = frame_height;
1421
    return 0;
1422
}
1423

    
1424
int av_parse_video_frame_rate(AVRational *frame_rate, const char *arg)
1425
{
1426
    int i;
1427
    char* cp;
1428

    
1429
    /* First, we check our abbreviation table */
1430
    for (i = 0; i < sizeof(frame_abvs)/sizeof(*frame_abvs); ++i)
1431
         if (!strcmp(frame_abvs[i].abv, arg)) {
1432
             frame_rate->num = frame_abvs[i].frame_rate;
1433
             frame_rate->den = frame_abvs[i].frame_rate_base;
1434
             return 0;
1435
         }
1436

    
1437
    /* Then, we try to parse it as fraction */
1438
    cp = strchr(arg, '/');
1439
    if (!cp)
1440
        cp = strchr(arg, ':');
1441
    if (cp) {
1442
        char* cpp;
1443
        frame_rate->num = strtol(arg, &cpp, 10);
1444
        if (cpp != arg || cpp == cp)
1445
            frame_rate->den = strtol(cp+1, &cpp, 10);
1446
        else
1447
           frame_rate->num = 0;
1448
    }
1449
    else {
1450
        /* Finally we give up and parse it as double */
1451
        AVRational time_base = av_d2q(strtod(arg, 0), DEFAULT_FRAME_RATE_BASE);
1452
        frame_rate->den = time_base.den;
1453
        frame_rate->num = time_base.num;
1454
    }
1455
    if (!frame_rate->num || !frame_rate->den)
1456
        return -1;
1457
    else
1458
        return 0;
1459
}