Revision 6ed04040

View differences:

libavcodec/avcodec.h
1928 1928
     */
1929 1929
    void *internal_buffer;
1930 1930

  
1931
#define FF_LAMBDA_SHIFT 7
1932
#define FF_LAMBDA_SCALE (1<<FF_LAMBDA_SHIFT)
1933
#define FF_QP2LAMBDA 118 ///< factor to convert from H.263 QP to lambda
1934
#define FF_LAMBDA_MAX (256*128-1)
1935

  
1936
#define FF_QUALITY_SCALE FF_LAMBDA_SCALE //FIXME maybe remove
1937 1931
    /**
1938 1932
     * Global quality for codecs which cannot change it per frame.
1939 1933
     * This should be proportional to MPEG-1/2/4 qscale.
libavcodec/opt.c
1 1
/*
2
 * AVOptions
3
 * Copyright (c) 2005 Michael Niedermayer <michaelni@gmx.at>
2
 * AVOptions ABI compatibility wrapper
3
 * Copyright (c) 2010 Michael Niedermayer <michaelni@gmx.at>
4 4
 *
5 5
 * This file is part of FFmpeg.
6 6
 *
......
19 19
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 20
 */
21 21

  
22
/**
23
 * @file
24
 * AVOptions
25
 * @author Michael Niedermayer <michaelni@gmx.at>
26
 */
27

  
28 22
#include "avcodec.h"
29 23
#include "opt.h"
30
#include "libavutil/eval.h"
31 24

  
32
//FIXME order them and do a bin search
33
const AVOption *av_find_opt(void *v, const char *name, const char *unit, int mask, int flags){
34
    AVClass *c= *(AVClass**)v; //FIXME silly way of storing AVClass
35
    const AVOption *o= c->option;
25
#if LIBAVCODEC_VERSION_MAJOR < 53 && CONFIG_SHARED && HAVE_SYMVER
36 26

  
37
    for(;o && o->name; o++){
38
        if(!strcmp(o->name, name) && (!unit || (o->unit && !strcmp(o->unit, unit))) && (o->flags & mask) == flags )
39
            return o;
40
    }
41
    return NULL;
27
FF_SYMVER(const AVOption *, av_find_opt, (void *obj, const char *name, const char *unit, int mask, int flags), "LIBAVCODEC_52"){
28
    return av_find_opt(obj, name, unit, mask, flags);
42 29
}
43

  
44
const AVOption *av_next_option(void *obj, const AVOption *last){
45
    if(last && last[1].name) return ++last;
46
    else if(last)            return NULL;
47
    else                     return (*(AVClass**)obj)->option;
30
FF_SYMVER(int, av_set_string3, (void *obj, const char *name, const char *val, int alloc, const AVOption **o_out), "LIBAVCODEC_52"){
31
    return av_set_string3(obj, name, val, alloc, o_out);
48 32
}
49

  
50
static int av_set_number2(void *obj, const char *name, double num, int den, int64_t intnum, const AVOption **o_out){
51
    const AVOption *o= av_find_opt(obj, name, NULL, 0, 0);
52
    void *dst;
53
    if(o_out)
54
        *o_out= o;
55
    if(!o || o->offset<=0)
56
        return AVERROR(ENOENT);
57

  
58
    if(o->max*den < num*intnum || o->min*den > num*intnum) {
59
        av_log(obj, AV_LOG_ERROR, "Value %lf for parameter '%s' out of range\n", num, name);
60
        return AVERROR(ERANGE);
61
    }
62

  
63
    dst= ((uint8_t*)obj) + o->offset;
64

  
65
    switch(o->type){
66
    case FF_OPT_TYPE_FLAGS:
67
    case FF_OPT_TYPE_INT:   *(int       *)dst= llrint(num/den)*intnum; break;
68
    case FF_OPT_TYPE_INT64: *(int64_t   *)dst= llrint(num/den)*intnum; break;
69
    case FF_OPT_TYPE_FLOAT: *(float     *)dst= num*intnum/den;         break;
70
    case FF_OPT_TYPE_DOUBLE:*(double    *)dst= num*intnum/den;         break;
71
    case FF_OPT_TYPE_RATIONAL:
72
        if((int)num == num) *(AVRational*)dst= (AVRational){num*intnum, den};
73
        else                *(AVRational*)dst= av_d2q(num*intnum/den, 1<<24);
74
        break;
75
    default:
76
        return AVERROR(EINVAL);
77
    }
78
    return 0;
33
FF_SYMVER(const AVOption *, av_set_double, (void *obj, const char *name, double n), "LIBAVCODEC_52"){
34
    return av_set_double(obj, name, n);
79 35
}
80

  
81
static const AVOption *av_set_number(void *obj, const char *name, double num, int den, int64_t intnum){
82
    const AVOption *o = NULL;
83
    if (av_set_number2(obj, name, num, den, intnum, &o) < 0)
84
        return NULL;
85
    else
86
        return o;
36
FF_SYMVER(const AVOption *, av_set_q, (void *obj, const char *name, AVRational n), "LIBAVCODEC_52"){
37
    return av_set_q(obj, name, n);
87 38
}
88

  
89
static const double const_values[]={
90
    M_PI,
91
    M_E,
92
    FF_QP2LAMBDA,
93
    0
94
};
95

  
96
static const char * const const_names[]={
97
    "PI",
98
    "E",
99
    "QP2LAMBDA",
100
    0
101
};
102

  
103
static int hexchar2int(char c) {
104
    if (c >= '0' && c <= '9') return c - '0';
105
    if (c >= 'a' && c <= 'f') return c - 'a' + 10;
106
    if (c >= 'A' && c <= 'F') return c - 'A' + 10;
107
    return -1;
39
FF_SYMVER(const AVOption *, av_set_int, (void *obj, const char *name, int64_t n), "LIBAVCODEC_52"){
40
    return av_set_int(obj, name, n);
108 41
}
109

  
110
int av_set_string3(void *obj, const char *name, const char *val, int alloc, const AVOption **o_out){
111
    int ret;
112
    const AVOption *o= av_find_opt(obj, name, NULL, 0, 0);
113
    if (o_out)
114
        *o_out = o;
115
    if(!o)
116
        return AVERROR(ENOENT);
117
    if(!val || o->offset<=0)
118
        return AVERROR(EINVAL);
119

  
120
    if(o->type == FF_OPT_TYPE_BINARY){
121
        uint8_t **dst = (uint8_t **)(((uint8_t*)obj) + o->offset);
122
        int *lendst = (int *)(dst + 1);
123
        uint8_t *bin, *ptr;
124
        int len = strlen(val);
125
        av_freep(dst);
126
        *lendst = 0;
127
        if (len & 1) return AVERROR(EINVAL);
128
        len /= 2;
129
        ptr = bin = av_malloc(len);
130
        while (*val) {
131
            int a = hexchar2int(*val++);
132
            int b = hexchar2int(*val++);
133
            if (a < 0 || b < 0) {
134
                av_free(bin);
135
                return AVERROR(EINVAL);
136
            }
137
            *ptr++ = (a << 4) | b;
138
        }
139
        *dst = bin;
140
        *lendst = len;
141
        return 0;
142
    }
143
    if(o->type != FF_OPT_TYPE_STRING){
144
        int notfirst=0;
145
        for(;;){
146
            int i;
147
            char buf[256];
148
            int cmd=0;
149
            double d;
150

  
151
            if(*val == '+' || *val == '-')
152
                cmd= *(val++);
153

  
154
            for(i=0; i<sizeof(buf)-1 && val[i] && val[i]!='+' && val[i]!='-'; i++)
155
                buf[i]= val[i];
156
            buf[i]=0;
157

  
158
            {
159
                const AVOption *o_named= av_find_opt(obj, buf, o->unit, 0, 0);
160
                if(o_named && o_named->type == FF_OPT_TYPE_CONST)
161
                    d= o_named->default_val;
162
                else if(!strcmp(buf, "default")) d= o->default_val;
163
                else if(!strcmp(buf, "max"    )) d= o->max;
164
                else if(!strcmp(buf, "min"    )) d= o->min;
165
                else if(!strcmp(buf, "none"   )) d= 0;
166
                else if(!strcmp(buf, "all"    )) d= ~0;
167
                else {
168
                    int res = av_parse_and_eval_expr(&d, buf, const_names, const_values, NULL, NULL, NULL, NULL, NULL, 0, obj);
169
                    if (res < 0) {
170
                        av_log(obj, AV_LOG_ERROR, "Unable to parse option value \"%s\"\n", val);
171
                        return res;
172
                    }
173
                }
174
            }
175
            if(o->type == FF_OPT_TYPE_FLAGS){
176
                if     (cmd=='+') d= av_get_int(obj, name, NULL) | (int64_t)d;
177
                else if(cmd=='-') d= av_get_int(obj, name, NULL) &~(int64_t)d;
178
            }else{
179
                if     (cmd=='+') d= notfirst*av_get_double(obj, name, NULL) + d;
180
                else if(cmd=='-') d= notfirst*av_get_double(obj, name, NULL) - d;
181
            }
182

  
183
            if ((ret = av_set_number2(obj, name, d, 1, 1, o_out)) < 0)
184
                return ret;
185
            val+= i;
186
            if(!*val)
187
                return 0;
188
            notfirst=1;
189
        }
190
        return AVERROR(EINVAL);
191
    }
192

  
193
    if(alloc){
194
        av_free(*(void**)(((uint8_t*)obj) + o->offset));
195
        val= av_strdup(val);
196
    }
197

  
198
    memcpy(((uint8_t*)obj) + o->offset, &val, sizeof(val));
199
    return 0;
42
FF_SYMVER(double, av_get_double, (void *obj, const char *name, const AVOption **o_out), "LIBAVCODEC_52"){
43
    return av_get_double(obj, name, o_out);
44
}
45
FF_SYMVER(AVRational, av_get_q, (void *obj, const char *name, const AVOption **o_out), "LIBAVCODEC_52"){
46
    return av_get_q(obj, name, o_out);
47
}
48
FF_SYMVER(int64_t, av_get_int, (void *obj, const char *name, const AVOption **o_out), "LIBAVCODEC_52"){
49
    return av_get_int(obj, name, o_out);
50
}
51
FF_SYMVER(const char *, av_get_string, (void *obj, const char *name, const AVOption **o_out, char *buf, int buf_len), "LIBAVCODEC_52"){
52
    return av_get_string(obj, name, o_out, buf, buf_len);
53
}
54
FF_SYMVER(const AVOption *, av_next_option, (void *obj, const AVOption *last), "LIBAVCODEC_52"){
55
    return av_next_option(obj, last);
200 56
}
57
FF_SYMVER(int, av_opt_show2, (void *obj, void *av_log_obj, int req_flags, int rej_flags), "LIBAVCODEC_52"){
58
    return av_opt_show2(obj, av_log_obj, req_flags, rej_flags);
59
}
60
FF_SYMVER(void, av_opt_set_defaults, (void *s), "LIBAVCODEC_52"){
61
    return av_opt_set_defaults(s);
62
}
63
FF_SYMVER(void, av_opt_set_defaults2, (void *s, int mask, int flags), "LIBAVCODEC_52"){
64
    return av_opt_set_defaults2(s, mask, flags);
65
}
66
#endif
201 67

  
202 68
#if LIBAVCODEC_VERSION_MAJOR < 53
203 69
const AVOption *av_set_string2(void *obj, const char *name, const char *val, int alloc){
......
215 81
}
216 82
#endif
217 83

  
218
const AVOption *av_set_double(void *obj, const char *name, double n){
219
    return av_set_number(obj, name, n, 1, 1);
220
}
221

  
222
const AVOption *av_set_q(void *obj, const char *name, AVRational n){
223
    return av_set_number(obj, name, n.num, n.den, 1);
224
}
225

  
226
const AVOption *av_set_int(void *obj, const char *name, int64_t n){
227
    return av_set_number(obj, name, 1, 1, n);
228
}
229

  
230
/**
231
 *
232
 * @param buf a buffer which is used for returning non string values as strings, can be NULL
233
 * @param buf_len allocated length in bytes of buf
234
 */
235
const char *av_get_string(void *obj, const char *name, const AVOption **o_out, char *buf, int buf_len){
236
    const AVOption *o= av_find_opt(obj, name, NULL, 0, 0);
237
    void *dst;
238
    uint8_t *bin;
239
    int len, i;
240
    if(!o || o->offset<=0)
241
        return NULL;
242
    if(o->type != FF_OPT_TYPE_STRING && (!buf || !buf_len))
243
        return NULL;
244

  
245
    dst= ((uint8_t*)obj) + o->offset;
246
    if(o_out) *o_out= o;
247

  
248
    switch(o->type){
249
    case FF_OPT_TYPE_FLAGS:     snprintf(buf, buf_len, "0x%08X",*(int    *)dst);break;
250
    case FF_OPT_TYPE_INT:       snprintf(buf, buf_len, "%d" , *(int    *)dst);break;
251
    case FF_OPT_TYPE_INT64:     snprintf(buf, buf_len, "%"PRId64, *(int64_t*)dst);break;
252
    case FF_OPT_TYPE_FLOAT:     snprintf(buf, buf_len, "%f" , *(float  *)dst);break;
253
    case FF_OPT_TYPE_DOUBLE:    snprintf(buf, buf_len, "%f" , *(double *)dst);break;
254
    case FF_OPT_TYPE_RATIONAL:  snprintf(buf, buf_len, "%d/%d", ((AVRational*)dst)->num, ((AVRational*)dst)->den);break;
255
    case FF_OPT_TYPE_STRING:    return *(void**)dst;
256
    case FF_OPT_TYPE_BINARY:
257
        len = *(int*)(((uint8_t *)dst) + sizeof(uint8_t *));
258
        if(len >= (buf_len + 1)/2) return NULL;
259
        bin = *(uint8_t**)dst;
260
        for(i = 0; i < len; i++) snprintf(buf + i*2, 3, "%02X", bin[i]);
261
        break;
262
    default: return NULL;
263
    }
264
    return buf;
265
}
266

  
267
static int av_get_number(void *obj, const char *name, const AVOption **o_out, double *num, int *den, int64_t *intnum){
268
    const AVOption *o= av_find_opt(obj, name, NULL, 0, 0);
269
    void *dst;
270
    if(!o || o->offset<=0)
271
        goto error;
272

  
273
    dst= ((uint8_t*)obj) + o->offset;
274

  
275
    if(o_out) *o_out= o;
276

  
277
    switch(o->type){
278
    case FF_OPT_TYPE_FLAGS:     *intnum= *(unsigned int*)dst;return 0;
279
    case FF_OPT_TYPE_INT:       *intnum= *(int    *)dst;return 0;
280
    case FF_OPT_TYPE_INT64:     *intnum= *(int64_t*)dst;return 0;
281
    case FF_OPT_TYPE_FLOAT:     *num=    *(float  *)dst;return 0;
282
    case FF_OPT_TYPE_DOUBLE:    *num=    *(double *)dst;return 0;
283
    case FF_OPT_TYPE_RATIONAL:  *intnum= ((AVRational*)dst)->num;
284
                                *den   = ((AVRational*)dst)->den;
285
                                                        return 0;
286
    }
287
error:
288
    *den=*intnum=0;
289
    return -1;
290
}
291

  
292
double av_get_double(void *obj, const char *name, const AVOption **o_out){
293
    int64_t intnum=1;
294
    double num=1;
295
    int den=1;
296

  
297
    av_get_number(obj, name, o_out, &num, &den, &intnum);
298
    return num*intnum/den;
299
}
300

  
301
AVRational av_get_q(void *obj, const char *name, const AVOption **o_out){
302
    int64_t intnum=1;
303
    double num=1;
304
    int den=1;
305

  
306
    av_get_number(obj, name, o_out, &num, &den, &intnum);
307
    if(num == 1.0 && (int)intnum == intnum)
308
        return (AVRational){intnum, den};
309
    else
310
        return av_d2q(num*intnum/den, 1<<24);
311
}
312

  
313
int64_t av_get_int(void *obj, const char *name, const AVOption **o_out){
314
    int64_t intnum=1;
315
    double num=1;
316
    int den=1;
317

  
318
    av_get_number(obj, name, o_out, &num, &den, &intnum);
319
    return num*intnum/den;
320
}
321

  
322
static void opt_list(void *obj, void *av_log_obj, const char *unit,
323
                     int req_flags, int rej_flags)
324
{
325
    const AVOption *opt=NULL;
326

  
327
    while((opt= av_next_option(obj, opt))){
328
        if (!(opt->flags & req_flags) || (opt->flags & rej_flags))
329
            continue;
330

  
331
        /* Don't print CONST's on level one.
332
         * Don't print anything but CONST's on level two.
333
         * Only print items from the requested unit.
334
         */
335
        if (!unit && opt->type==FF_OPT_TYPE_CONST)
336
            continue;
337
        else if (unit && opt->type!=FF_OPT_TYPE_CONST)
338
            continue;
339
        else if (unit && opt->type==FF_OPT_TYPE_CONST && strcmp(unit, opt->unit))
340
            continue;
341
        else if (unit && opt->type == FF_OPT_TYPE_CONST)
342
            av_log(av_log_obj, AV_LOG_INFO, "   %-15s ", opt->name);
343
        else
344
            av_log(av_log_obj, AV_LOG_INFO, "-%-17s ", opt->name);
345

  
346
        switch( opt->type )
347
        {
348
            case FF_OPT_TYPE_FLAGS:
349
                av_log( av_log_obj, AV_LOG_INFO, "%-7s ", "<flags>" );
350
                break;
351
            case FF_OPT_TYPE_INT:
352
                av_log( av_log_obj, AV_LOG_INFO, "%-7s ", "<int>" );
353
                break;
354
            case FF_OPT_TYPE_INT64:
355
                av_log( av_log_obj, AV_LOG_INFO, "%-7s ", "<int64>" );
356
                break;
357
            case FF_OPT_TYPE_DOUBLE:
358
                av_log( av_log_obj, AV_LOG_INFO, "%-7s ", "<double>" );
359
                break;
360
            case FF_OPT_TYPE_FLOAT:
361
                av_log( av_log_obj, AV_LOG_INFO, "%-7s ", "<float>" );
362
                break;
363
            case FF_OPT_TYPE_STRING:
364
                av_log( av_log_obj, AV_LOG_INFO, "%-7s ", "<string>" );
365
                break;
366
            case FF_OPT_TYPE_RATIONAL:
367
                av_log( av_log_obj, AV_LOG_INFO, "%-7s ", "<rational>" );
368
                break;
369
            case FF_OPT_TYPE_BINARY:
370
                av_log( av_log_obj, AV_LOG_INFO, "%-7s ", "<binary>" );
371
                break;
372
            case FF_OPT_TYPE_CONST:
373
            default:
374
                av_log( av_log_obj, AV_LOG_INFO, "%-7s ", "" );
375
                break;
376
        }
377
        av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_ENCODING_PARAM) ? 'E' : '.');
378
        av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_DECODING_PARAM) ? 'D' : '.');
379
        av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_VIDEO_PARAM   ) ? 'V' : '.');
380
        av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_AUDIO_PARAM   ) ? 'A' : '.');
381
        av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_SUBTITLE_PARAM) ? 'S' : '.');
382

  
383
        if(opt->help)
384
            av_log(av_log_obj, AV_LOG_INFO, " %s", opt->help);
385
        av_log(av_log_obj, AV_LOG_INFO, "\n");
386
        if (opt->unit && opt->type != FF_OPT_TYPE_CONST) {
387
            opt_list(obj, av_log_obj, opt->unit, req_flags, rej_flags);
388
        }
389
    }
390
}
391

  
392
int av_opt_show2(void *obj, void *av_log_obj, int req_flags, int rej_flags)
393
{
394
    if(!obj)
395
        return -1;
396

  
397
    av_log(av_log_obj, AV_LOG_INFO, "%s AVOptions:\n", (*(AVClass**)obj)->class_name);
398

  
399
    opt_list(obj, av_log_obj, NULL, req_flags, rej_flags);
400

  
401
    return 0;
402
}
403

  
404 84
#if FF_API_OPT_SHOW
405 85
int av_opt_show(void *obj, void *av_log_obj){
406 86
    return av_opt_show2(obj, av_log_obj,
407 87
                        AV_OPT_FLAG_ENCODING_PARAM|AV_OPT_FLAG_DECODING_PARAM, 0);
408 88
}
409 89
#endif
410

  
411
/** Set the values of the AVCodecContext or AVFormatContext structure.
412
 * They are set to the defaults specified in the according AVOption options
413
 * array default_val field.
414
 *
415
 * @param s AVCodecContext or AVFormatContext for which the defaults will be set
416
 */
417
void av_opt_set_defaults2(void *s, int mask, int flags)
418
{
419
    const AVOption *opt = NULL;
420
    while ((opt = av_next_option(s, opt)) != NULL) {
421
        if((opt->flags & mask) != flags)
422
            continue;
423
        switch(opt->type) {
424
            case FF_OPT_TYPE_CONST:
425
                /* Nothing to be done here */
426
            break;
427
            case FF_OPT_TYPE_FLAGS:
428
            case FF_OPT_TYPE_INT: {
429
                int val;
430
                val = opt->default_val;
431
                av_set_int(s, opt->name, val);
432
            }
433
            break;
434
            case FF_OPT_TYPE_INT64:
435
                if((double)(opt->default_val+0.6) == opt->default_val)
436
                    av_log(s, AV_LOG_DEBUG, "loss of precision in default of %s\n", opt->name);
437
                av_set_int(s, opt->name, opt->default_val);
438
            break;
439
            case FF_OPT_TYPE_FLOAT: {
440
                double val;
441
                val = opt->default_val;
442
                av_set_double(s, opt->name, val);
443
            }
444
            break;
445
            case FF_OPT_TYPE_RATIONAL: {
446
                AVRational val;
447
                val = av_d2q(opt->default_val, INT_MAX);
448
                av_set_q(s, opt->name, val);
449
            }
450
            break;
451
            case FF_OPT_TYPE_STRING:
452
            case FF_OPT_TYPE_BINARY:
453
                /* Cannot set default for string as default_val is of type * double */
454
            break;
455
            default:
456
                av_log(s, AV_LOG_DEBUG, "AVOption type %d of option %s not implemented yet\n", opt->type, opt->name);
457
        }
458
    }
459
}
460

  
461
void av_opt_set_defaults(void *s){
462
    av_opt_set_defaults2(s, 0, 0);
463
}
464

  
libavcodec/opt.h
29 29

  
30 30
#include "libavutil/rational.h"
31 31
#include "avcodec.h"
32

  
33
enum AVOptionType{
34
    FF_OPT_TYPE_FLAGS,
35
    FF_OPT_TYPE_INT,
36
    FF_OPT_TYPE_INT64,
37
    FF_OPT_TYPE_DOUBLE,
38
    FF_OPT_TYPE_FLOAT,
39
    FF_OPT_TYPE_STRING,
40
    FF_OPT_TYPE_RATIONAL,
41
    FF_OPT_TYPE_BINARY,  ///< offset must point to a pointer immediately followed by an int for the length
42
    FF_OPT_TYPE_CONST=128,
43
};
44

  
45
/**
46
 * AVOption
47
 */
48
typedef struct AVOption {
49
    const char *name;
50

  
51
    /**
52
     * short English help text
53
     * @todo What about other languages?
54
     */
55
    const char *help;
56

  
57
    /**
58
     * The offset relative to the context structure where the option
59
     * value is stored. It should be 0 for named constants.
60
     */
61
    int offset;
62
    enum AVOptionType type;
63

  
64
    /**
65
     * the default value for scalar options
66
     */
67
    double default_val;
68
    double min;                 ///< minimum valid value for the option
69
    double max;                 ///< maximum valid value for the option
70

  
71
    int flags;
72
#define AV_OPT_FLAG_ENCODING_PARAM  1   ///< a generic parameter which can be set by the user for muxing or encoding
73
#define AV_OPT_FLAG_DECODING_PARAM  2   ///< a generic parameter which can be set by the user for demuxing or decoding
74
#define AV_OPT_FLAG_METADATA        4   ///< some data extracted or inserted into the file like title, comment, ...
75
#define AV_OPT_FLAG_AUDIO_PARAM     8
76
#define AV_OPT_FLAG_VIDEO_PARAM     16
77
#define AV_OPT_FLAG_SUBTITLE_PARAM  32
78
//FIXME think about enc-audio, ... style flags
79

  
80
    /**
81
     * The logical unit to which the option belongs. Non-constant
82
     * options and corresponding named constants share the same
83
     * unit. May be NULL.
84
     */
85
    const char *unit;
86
} AVOption;
87

  
88
/**
89
 * AVOption2.
90
 * THIS IS NOT PART OF THE API/ABI YET!
91
 * This is identical to AVOption except that default_val was replaced by
92
 * an union, it should be compatible with AVOption on normal platforms.
93
 */
94
typedef struct AVOption2 {
95
    const char *name;
96

  
97
    /**
98
     * short English help text
99
     * @todo What about other languages?
100
     */
101
    const char *help;
102

  
103
    /**
104
     * The offset relative to the context structure where the option
105
     * value is stored. It should be 0 for named constants.
106
     */
107
    int offset;
108
    enum AVOptionType type;
109

  
110
    /**
111
     * the default value for scalar options
112
     */
113
    union {
114
        double dbl;
115
        const char *str;
116
    } default_val;
117

  
118
    double min;                 ///< minimum valid value for the option
119
    double max;                 ///< maximum valid value for the option
120

  
121
    int flags;
122
/*
123
#define AV_OPT_FLAG_ENCODING_PARAM  1   ///< a generic parameter which can be set by the user for muxing or encoding
124
#define AV_OPT_FLAG_DECODING_PARAM  2   ///< a generic parameter which can be set by the user for demuxing or decoding
125
#define AV_OPT_FLAG_METADATA        4   ///< some data extracted or inserted into the file like title, comment, ...
126
#define AV_OPT_FLAG_AUDIO_PARAM     8
127
#define AV_OPT_FLAG_VIDEO_PARAM     16
128
#define AV_OPT_FLAG_SUBTITLE_PARAM  32
129
*/
130
//FIXME think about enc-audio, ... style flags
131

  
132
    /**
133
     * The logical unit to which the option belongs. Non-constant
134
     * options and corresponding named constants share the same
135
     * unit. May be NULL.
136
     */
137
    const char *unit;
138
} AVOption2;
139

  
140

  
141
/**
142
 * Look for an option in obj. Look only for the options which
143
 * have the flags set as specified in mask and flags (that is,
144
 * for which it is the case that opt->flags & mask == flags).
145
 *
146
 * @param[in] obj a pointer to a struct whose first element is a
147
 * pointer to an AVClass
148
 * @param[in] name the name of the option to look for
149
 * @param[in] unit the unit of the option to look for, or any if NULL
150
 * @return a pointer to the option found, or NULL if no option
151
 * has been found
152
 */
153
const AVOption *av_find_opt(void *obj, const char *name, const char *unit, int mask, int flags);
32
#include "libavutil/opt.h"
154 33

  
155 34
#if LIBAVCODEC_VERSION_MAJOR < 53
156 35
/**
......
166 45
 */
167 46
attribute_deprecated const AVOption *av_set_string2(void *obj, const char *name, const char *val, int alloc);
168 47
#endif
169

  
170
/**
171
 * Set the field of obj with the given name to value.
172
 *
173
 * @param[in] obj A struct whose first element is a pointer to an
174
 * AVClass.
175
 * @param[in] name the name of the field to set
176
 * @param[in] val The value to set. If the field is not of a string
177
 * type, then the given string is parsed.
178
 * SI postfixes and some named scalars are supported.
179
 * If the field is of a numeric type, it has to be a numeric or named
180
 * scalar. Behavior with more than one scalar and +- infix operators
181
 * is undefined.
182
 * If the field is of a flags type, it has to be a sequence of numeric
183
 * scalars or named flags separated by '+' or '-'. Prefixing a flag
184
 * with '+' causes it to be set without affecting the other flags;
185
 * similarly, '-' unsets a flag.
186
 * @param[out] o_out if non-NULL put here a pointer to the AVOption
187
 * found
188
 * @param alloc when 1 then the old value will be av_freed() and the
189
 *                     new av_strduped()
190
 *              when 0 then no av_free() nor av_strdup() will be used
191
 * @return 0 if the value has been set, or an AVERROR code in case of
192
 * error:
193
 * AVERROR(ENOENT) if no matching option exists
194
 * AVERROR(ERANGE) if the value is out of range
195
 * AVERROR(EINVAL) if the value is not valid
196
 */
197
int av_set_string3(void *obj, const char *name, const char *val, int alloc, const AVOption **o_out);
198

  
199
const AVOption *av_set_double(void *obj, const char *name, double n);
200
const AVOption *av_set_q(void *obj, const char *name, AVRational n);
201
const AVOption *av_set_int(void *obj, const char *name, int64_t n);
202
double av_get_double(void *obj, const char *name, const AVOption **o_out);
203
AVRational av_get_q(void *obj, const char *name, const AVOption **o_out);
204
int64_t av_get_int(void *obj, const char *name, const AVOption **o_out);
205
const char *av_get_string(void *obj, const char *name, const AVOption **o_out, char *buf, int buf_len);
206
const AVOption *av_next_option(void *obj, const AVOption *last);
207

  
208 48
#if FF_API_OPT_SHOW
209 49
/**
210 50
 * @deprecated Use av_opt_show2() instead.
......
212 52
attribute_deprecated int av_opt_show(void *obj, void *av_log_obj);
213 53
#endif
214 54

  
215
/**
216
 * Show the obj options.
217
 *
218
 * @param req_flags requested flags for the options to show. Show only the
219
 * options for which it is opt->flags & req_flags.
220
 * @param rej_flags rejected flags for the options to show. Show only the
221
 * options for which it is !(opt->flags & req_flags).
222
 * @param av_log_obj log context to use for showing the options
223
 */
224
int av_opt_show2(void *obj, void *av_log_obj, int req_flags, int rej_flags);
225

  
226
void av_opt_set_defaults(void *s);
227
void av_opt_set_defaults2(void *s, int mask, int flags);
228

  
229 55
#endif /* AVCODEC_OPT_H */
libavcodec/options.c
25 25
 */
26 26

  
27 27
#include "avcodec.h"
28
#include "opt.h"
28
#include "libavutil/opt.h"
29 29
#include <float.h>              /* FLT_MIN, FLT_MAX */
30 30

  
31 31
static const char* context_to_name(void* ptr) {
libavcodec/resample.c
26 26

  
27 27
#include "avcodec.h"
28 28
#include "audioconvert.h"
29
#include "opt.h"
29
#include "libavutil/opt.h"
30 30

  
31 31
struct AVResampleContext;
32 32

  
libavcodec/utils.c
32 32
#include "libavcore/imgutils.h"
33 33
#include "avcodec.h"
34 34
#include "dsputil.h"
35
#include "opt.h"
35
#include "libavutil/opt.h"
36 36
#include "imgconvert.h"
37 37
#include "audioconvert.h"
38 38
#include "internal.h"
libavfilter/parseutils.h
25 25
#ifndef AVFILTER_PARSEUTILS_H
26 26
#define AVFILTER_PARSEUTILS_H
27 27

  
28
#include "libavcodec/opt.h"
28
#include "libavutil/opt.h"
29 29

  
30 30
/**
31 31
 * Unescape the given string until a non escaped terminating char,
libavformat/avio.c
23 23
#define _XOPEN_SOURCE 600
24 24
#include <unistd.h>
25 25
#include "libavutil/avstring.h"
26
#include "libavcodec/opt.h"
26
#include "libavutil/opt.h"
27 27
#include "os_support.h"
28 28
#include "avformat.h"
29 29
#if CONFIG_NETWORK
libavformat/http.c
28 28
#include "http.h"
29 29
#include "os_support.h"
30 30
#include "httpauth.h"
31
#include "libavcodec/opt.h"
31
#include "libavutil/opt.h"
32 32

  
33 33
/* XXX: POST protocol is not completely implemented because ffmpeg uses
34 34
   only a subset of it. */
libavformat/options.c
18 18
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19 19
 */
20 20
#include "avformat.h"
21
#include "libavcodec/opt.h"
21
#include "libavutil/opt.h"
22 22

  
23 23
/**
24 24
 * @file
libavformat/utils.c
21 21
#include "avformat.h"
22 22
#include "internal.h"
23 23
#include "libavcodec/internal.h"
24
#include "libavcodec/opt.h"
24
#include "libavutil/opt.h"
25 25
#include "metadata.h"
26 26
#include "libavutil/avstring.h"
27 27
#include "riff.h"
libavutil/Makefile
49 49
       mathematics.o                                                    \
50 50
       md5.o                                                            \
51 51
       mem.o                                                            \
52
       opt.o                                                            \
52 53
       pixdesc.o                                                        \
53 54
       random_seed.o                                                    \
54 55
       rational.o                                                       \
libavutil/avutil.h
78 78
    AVMEDIA_TYPE_NB
79 79
};
80 80

  
81
#define FF_LAMBDA_SHIFT 7
82
#define FF_LAMBDA_SCALE (1<<FF_LAMBDA_SHIFT)
83
#define FF_QP2LAMBDA 118 ///< factor to convert from H.263 QP to lambda
84
#define FF_LAMBDA_MAX (256*128-1)
85

  
86
#define FF_QUALITY_SCALE FF_LAMBDA_SCALE //FIXME maybe remove
87

  
81 88
#include "common.h"
82 89
#include "error.h"
83 90
#include "mathematics.h"
libavutil/opt.c
1
/*
2
 * AVOptions
3
 * Copyright (c) 2005 Michael Niedermayer <michaelni@gmx.at>
4
 *
5
 * This file is part of FFmpeg.
6
 *
7
 * FFmpeg is free software; you can redistribute it and/or
8
 * modify it under the terms of the GNU Lesser General Public
9
 * License as published by the Free Software Foundation; either
10
 * version 2.1 of the License, or (at your option) any later version.
11
 *
12
 * FFmpeg is distributed in the hope that it will be useful,
13
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
15
 * Lesser General Public License for more details.
16
 *
17
 * You should have received a copy of the GNU Lesser General Public
18
 * License along with FFmpeg; if not, write to the Free Software
19
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20
 */
21

  
22
/**
23
 * @file
24
 * AVOptions
25
 * @author Michael Niedermayer <michaelni@gmx.at>
26
 */
27

  
28
#include "avutil.h"
29
#include "opt.h"
30
#include "libavutil/eval.h"
31

  
32
//FIXME order them and do a bin search
33
const AVOption *av_find_opt(void *v, const char *name, const char *unit, int mask, int flags){
34
    AVClass *c= *(AVClass**)v; //FIXME silly way of storing AVClass
35
    const AVOption *o= c->option;
36

  
37
    for(;o && o->name; o++){
38
        if(!strcmp(o->name, name) && (!unit || (o->unit && !strcmp(o->unit, unit))) && (o->flags & mask) == flags )
39
            return o;
40
    }
41
    return NULL;
42
}
43

  
44
const AVOption *av_next_option(void *obj, const AVOption *last){
45
    if(last && last[1].name) return ++last;
46
    else if(last)            return NULL;
47
    else                     return (*(AVClass**)obj)->option;
48
}
49

  
50
static int av_set_number2(void *obj, const char *name, double num, int den, int64_t intnum, const AVOption **o_out){
51
    const AVOption *o= av_find_opt(obj, name, NULL, 0, 0);
52
    void *dst;
53
    if(o_out)
54
        *o_out= o;
55
    if(!o || o->offset<=0)
56
        return AVERROR(ENOENT);
57

  
58
    if(o->max*den < num*intnum || o->min*den > num*intnum) {
59
        av_log(obj, AV_LOG_ERROR, "Value %lf for parameter '%s' out of range\n", num, name);
60
        return AVERROR(ERANGE);
61
    }
62

  
63
    dst= ((uint8_t*)obj) + o->offset;
64

  
65
    switch(o->type){
66
    case FF_OPT_TYPE_FLAGS:
67
    case FF_OPT_TYPE_INT:   *(int       *)dst= llrint(num/den)*intnum; break;
68
    case FF_OPT_TYPE_INT64: *(int64_t   *)dst= llrint(num/den)*intnum; break;
69
    case FF_OPT_TYPE_FLOAT: *(float     *)dst= num*intnum/den;         break;
70
    case FF_OPT_TYPE_DOUBLE:*(double    *)dst= num*intnum/den;         break;
71
    case FF_OPT_TYPE_RATIONAL:
72
        if((int)num == num) *(AVRational*)dst= (AVRational){num*intnum, den};
73
        else                *(AVRational*)dst= av_d2q(num*intnum/den, 1<<24);
74
        break;
75
    default:
76
        return AVERROR(EINVAL);
77
    }
78
    return 0;
79
}
80

  
81
static const AVOption *av_set_number(void *obj, const char *name, double num, int den, int64_t intnum){
82
    const AVOption *o = NULL;
83
    if (av_set_number2(obj, name, num, den, intnum, &o) < 0)
84
        return NULL;
85
    else
86
        return o;
87
}
88

  
89
static const double const_values[]={
90
    M_PI,
91
    M_E,
92
    FF_QP2LAMBDA,
93
    0
94
};
95

  
96
static const char * const const_names[]={
97
    "PI",
98
    "E",
99
    "QP2LAMBDA",
100
    0
101
};
102

  
103
static int hexchar2int(char c) {
104
    if (c >= '0' && c <= '9') return c - '0';
105
    if (c >= 'a' && c <= 'f') return c - 'a' + 10;
106
    if (c >= 'A' && c <= 'F') return c - 'A' + 10;
107
    return -1;
108
}
109

  
110
int av_set_string3(void *obj, const char *name, const char *val, int alloc, const AVOption **o_out){
111
    int ret;
112
    const AVOption *o= av_find_opt(obj, name, NULL, 0, 0);
113
    if (o_out)
114
        *o_out = o;
115
    if(!o)
116
        return AVERROR(ENOENT);
117
    if(!val || o->offset<=0)
118
        return AVERROR(EINVAL);
119

  
120
    if(o->type == FF_OPT_TYPE_BINARY){
121
        uint8_t **dst = (uint8_t **)(((uint8_t*)obj) + o->offset);
122
        int *lendst = (int *)(dst + 1);
123
        uint8_t *bin, *ptr;
124
        int len = strlen(val);
125
        av_freep(dst);
126
        *lendst = 0;
127
        if (len & 1) return AVERROR(EINVAL);
128
        len /= 2;
129
        ptr = bin = av_malloc(len);
130
        while (*val) {
131
            int a = hexchar2int(*val++);
132
            int b = hexchar2int(*val++);
133
            if (a < 0 || b < 0) {
134
                av_free(bin);
135
                return AVERROR(EINVAL);
136
            }
137
            *ptr++ = (a << 4) | b;
138
        }
139
        *dst = bin;
140
        *lendst = len;
141
        return 0;
142
    }
143
    if(o->type != FF_OPT_TYPE_STRING){
144
        int notfirst=0;
145
        for(;;){
146
            int i;
147
            char buf[256];
148
            int cmd=0;
149
            double d;
150

  
151
            if(*val == '+' || *val == '-')
152
                cmd= *(val++);
153

  
154
            for(i=0; i<sizeof(buf)-1 && val[i] && val[i]!='+' && val[i]!='-'; i++)
155
                buf[i]= val[i];
156
            buf[i]=0;
157

  
158
            {
159
                const AVOption *o_named= av_find_opt(obj, buf, o->unit, 0, 0);
160
                if(o_named && o_named->type == FF_OPT_TYPE_CONST)
161
                    d= o_named->default_val;
162
                else if(!strcmp(buf, "default")) d= o->default_val;
163
                else if(!strcmp(buf, "max"    )) d= o->max;
164
                else if(!strcmp(buf, "min"    )) d= o->min;
165
                else if(!strcmp(buf, "none"   )) d= 0;
166
                else if(!strcmp(buf, "all"    )) d= ~0;
167
                else {
168
                    int res = av_parse_and_eval_expr(&d, buf, const_names, const_values, NULL, NULL, NULL, NULL, NULL, 0, obj);
169
                    if (res < 0) {
170
                        av_log(obj, AV_LOG_ERROR, "Unable to parse option value \"%s\"\n", val);
171
                        return res;
172
                    }
173
                }
174
            }
175
            if(o->type == FF_OPT_TYPE_FLAGS){
176
                if     (cmd=='+') d= av_get_int(obj, name, NULL) | (int64_t)d;
177
                else if(cmd=='-') d= av_get_int(obj, name, NULL) &~(int64_t)d;
178
            }else{
179
                if     (cmd=='+') d= notfirst*av_get_double(obj, name, NULL) + d;
180
                else if(cmd=='-') d= notfirst*av_get_double(obj, name, NULL) - d;
181
            }
182

  
183
            if ((ret = av_set_number2(obj, name, d, 1, 1, o_out)) < 0)
184
                return ret;
185
            val+= i;
186
            if(!*val)
187
                return 0;
188
            notfirst=1;
189
        }
190
        return AVERROR(EINVAL);
191
    }
192

  
193
    if(alloc){
194
        av_free(*(void**)(((uint8_t*)obj) + o->offset));
195
        val= av_strdup(val);
196
    }
197

  
198
    memcpy(((uint8_t*)obj) + o->offset, &val, sizeof(val));
199
    return 0;
200
}
201

  
202
const AVOption *av_set_double(void *obj, const char *name, double n){
203
    return av_set_number(obj, name, n, 1, 1);
204
}
205

  
206
const AVOption *av_set_q(void *obj, const char *name, AVRational n){
207
    return av_set_number(obj, name, n.num, n.den, 1);
208
}
209

  
210
const AVOption *av_set_int(void *obj, const char *name, int64_t n){
211
    return av_set_number(obj, name, 1, 1, n);
212
}
213

  
214
/**
215
 *
216
 * @param buf a buffer which is used for returning non string values as strings, can be NULL
217
 * @param buf_len allocated length in bytes of buf
218
 */
219
const char *av_get_string(void *obj, const char *name, const AVOption **o_out, char *buf, int buf_len){
220
    const AVOption *o= av_find_opt(obj, name, NULL, 0, 0);
221
    void *dst;
222
    uint8_t *bin;
223
    int len, i;
224
    if(!o || o->offset<=0)
225
        return NULL;
226
    if(o->type != FF_OPT_TYPE_STRING && (!buf || !buf_len))
227
        return NULL;
228

  
229
    dst= ((uint8_t*)obj) + o->offset;
230
    if(o_out) *o_out= o;
231

  
232
    switch(o->type){
233
    case FF_OPT_TYPE_FLAGS:     snprintf(buf, buf_len, "0x%08X",*(int    *)dst);break;
234
    case FF_OPT_TYPE_INT:       snprintf(buf, buf_len, "%d" , *(int    *)dst);break;
235
    case FF_OPT_TYPE_INT64:     snprintf(buf, buf_len, "%"PRId64, *(int64_t*)dst);break;
236
    case FF_OPT_TYPE_FLOAT:     snprintf(buf, buf_len, "%f" , *(float  *)dst);break;
237
    case FF_OPT_TYPE_DOUBLE:    snprintf(buf, buf_len, "%f" , *(double *)dst);break;
238
    case FF_OPT_TYPE_RATIONAL:  snprintf(buf, buf_len, "%d/%d", ((AVRational*)dst)->num, ((AVRational*)dst)->den);break;
239
    case FF_OPT_TYPE_STRING:    return *(void**)dst;
240
    case FF_OPT_TYPE_BINARY:
241
        len = *(int*)(((uint8_t *)dst) + sizeof(uint8_t *));
242
        if(len >= (buf_len + 1)/2) return NULL;
243
        bin = *(uint8_t**)dst;
244
        for(i = 0; i < len; i++) snprintf(buf + i*2, 3, "%02X", bin[i]);
245
        break;
246
    default: return NULL;
247
    }
248
    return buf;
249
}
250

  
251
static int av_get_number(void *obj, const char *name, const AVOption **o_out, double *num, int *den, int64_t *intnum){
252
    const AVOption *o= av_find_opt(obj, name, NULL, 0, 0);
253
    void *dst;
254
    if(!o || o->offset<=0)
255
        goto error;
256

  
257
    dst= ((uint8_t*)obj) + o->offset;
258

  
259
    if(o_out) *o_out= o;
260

  
261
    switch(o->type){
262
    case FF_OPT_TYPE_FLAGS:     *intnum= *(unsigned int*)dst;return 0;
263
    case FF_OPT_TYPE_INT:       *intnum= *(int    *)dst;return 0;
264
    case FF_OPT_TYPE_INT64:     *intnum= *(int64_t*)dst;return 0;
265
    case FF_OPT_TYPE_FLOAT:     *num=    *(float  *)dst;return 0;
266
    case FF_OPT_TYPE_DOUBLE:    *num=    *(double *)dst;return 0;
267
    case FF_OPT_TYPE_RATIONAL:  *intnum= ((AVRational*)dst)->num;
268
                                *den   = ((AVRational*)dst)->den;
269
                                                        return 0;
270
    }
271
error:
272
    *den=*intnum=0;
273
    return -1;
274
}
275

  
276
double av_get_double(void *obj, const char *name, const AVOption **o_out){
277
    int64_t intnum=1;
278
    double num=1;
279
    int den=1;
280

  
281
    av_get_number(obj, name, o_out, &num, &den, &intnum);
282
    return num*intnum/den;
283
}
284

  
285
AVRational av_get_q(void *obj, const char *name, const AVOption **o_out){
286
    int64_t intnum=1;
287
    double num=1;
288
    int den=1;
289

  
290
    av_get_number(obj, name, o_out, &num, &den, &intnum);
291
    if(num == 1.0 && (int)intnum == intnum)
292
        return (AVRational){intnum, den};
293
    else
294
        return av_d2q(num*intnum/den, 1<<24);
295
}
296

  
297
int64_t av_get_int(void *obj, const char *name, const AVOption **o_out){
298
    int64_t intnum=1;
299
    double num=1;
300
    int den=1;
301

  
302
    av_get_number(obj, name, o_out, &num, &den, &intnum);
303
    return num*intnum/den;
304
}
305

  
306
static void opt_list(void *obj, void *av_log_obj, const char *unit,
307
                     int req_flags, int rej_flags)
308
{
309
    const AVOption *opt=NULL;
310

  
311
    while((opt= av_next_option(obj, opt))){
312
        if (!(opt->flags & req_flags) || (opt->flags & rej_flags))
313
            continue;
314

  
315
        /* Don't print CONST's on level one.
316
         * Don't print anything but CONST's on level two.
317
         * Only print items from the requested unit.
318
         */
319
        if (!unit && opt->type==FF_OPT_TYPE_CONST)
320
            continue;
321
        else if (unit && opt->type!=FF_OPT_TYPE_CONST)
322
            continue;
323
        else if (unit && opt->type==FF_OPT_TYPE_CONST && strcmp(unit, opt->unit))
324
            continue;
325
        else if (unit && opt->type == FF_OPT_TYPE_CONST)
326
            av_log(av_log_obj, AV_LOG_INFO, "   %-15s ", opt->name);
327
        else
328
            av_log(av_log_obj, AV_LOG_INFO, "-%-17s ", opt->name);
329

  
330
        switch( opt->type )
331
        {
332
            case FF_OPT_TYPE_FLAGS:
333
                av_log( av_log_obj, AV_LOG_INFO, "%-7s ", "<flags>" );
334
                break;
335
            case FF_OPT_TYPE_INT:
336
                av_log( av_log_obj, AV_LOG_INFO, "%-7s ", "<int>" );
337
                break;
338
            case FF_OPT_TYPE_INT64:
339
                av_log( av_log_obj, AV_LOG_INFO, "%-7s ", "<int64>" );
340
                break;
341
            case FF_OPT_TYPE_DOUBLE:
342
                av_log( av_log_obj, AV_LOG_INFO, "%-7s ", "<double>" );
343
                break;
344
            case FF_OPT_TYPE_FLOAT:
345
                av_log( av_log_obj, AV_LOG_INFO, "%-7s ", "<float>" );
346
                break;
347
            case FF_OPT_TYPE_STRING:
348
                av_log( av_log_obj, AV_LOG_INFO, "%-7s ", "<string>" );
349
                break;
350
            case FF_OPT_TYPE_RATIONAL:
351
                av_log( av_log_obj, AV_LOG_INFO, "%-7s ", "<rational>" );
352
                break;
353
            case FF_OPT_TYPE_BINARY:
354
                av_log( av_log_obj, AV_LOG_INFO, "%-7s ", "<binary>" );
355
                break;
356
            case FF_OPT_TYPE_CONST:
357
            default:
358
                av_log( av_log_obj, AV_LOG_INFO, "%-7s ", "" );
359
                break;
360
        }
361
        av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_ENCODING_PARAM) ? 'E' : '.');
362
        av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_DECODING_PARAM) ? 'D' : '.');
363
        av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_VIDEO_PARAM   ) ? 'V' : '.');
364
        av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_AUDIO_PARAM   ) ? 'A' : '.');
365
        av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_SUBTITLE_PARAM) ? 'S' : '.');
366

  
367
        if(opt->help)
368
            av_log(av_log_obj, AV_LOG_INFO, " %s", opt->help);
369
        av_log(av_log_obj, AV_LOG_INFO, "\n");
370
        if (opt->unit && opt->type != FF_OPT_TYPE_CONST) {
371
            opt_list(obj, av_log_obj, opt->unit, req_flags, rej_flags);
372
        }
373
    }
374
}
375

  
376
int av_opt_show2(void *obj, void *av_log_obj, int req_flags, int rej_flags)
377
{
378
    if(!obj)
379
        return -1;
380

  
381
    av_log(av_log_obj, AV_LOG_INFO, "%s AVOptions:\n", (*(AVClass**)obj)->class_name);
382

  
383
    opt_list(obj, av_log_obj, NULL, req_flags, rej_flags);
384

  
385
    return 0;
386
}
387

  
388
/** Set the values of the AVCodecContext or AVFormatContext structure.
389
 * They are set to the defaults specified in the according AVOption options
390
 * array default_val field.
391
 *
392
 * @param s AVCodecContext or AVFormatContext for which the defaults will be set
393
 */
394
void av_opt_set_defaults2(void *s, int mask, int flags)
395
{
396
    const AVOption *opt = NULL;
397
    while ((opt = av_next_option(s, opt)) != NULL) {
398
        if((opt->flags & mask) != flags)
399
            continue;
400
        switch(opt->type) {
401
            case FF_OPT_TYPE_CONST:
402
                /* Nothing to be done here */
403
            break;
404
            case FF_OPT_TYPE_FLAGS:
405
            case FF_OPT_TYPE_INT: {
406
                int val;
407
                val = opt->default_val;
408
                av_set_int(s, opt->name, val);
409
            }
410
            break;
411
            case FF_OPT_TYPE_INT64:
412
                if((double)(opt->default_val+0.6) == opt->default_val)
413
                    av_log(s, AV_LOG_DEBUG, "loss of precision in default of %s\n", opt->name);
414
                av_set_int(s, opt->name, opt->default_val);
415
            break;
416
            case FF_OPT_TYPE_FLOAT: {
417
                double val;
418
                val = opt->default_val;
419
                av_set_double(s, opt->name, val);
420
            }
421
            break;
422
            case FF_OPT_TYPE_RATIONAL: {
423
                AVRational val;
424
                val = av_d2q(opt->default_val, INT_MAX);
425
                av_set_q(s, opt->name, val);
426
            }
427
            break;
428
            case FF_OPT_TYPE_STRING:
429
            case FF_OPT_TYPE_BINARY:
430
                /* Cannot set default for string as default_val is of type * double */
431
            break;
432
            default:
433
                av_log(s, AV_LOG_DEBUG, "AVOption type %d of option %s not implemented yet\n", opt->type, opt->name);
434
        }
435
    }
436
}
437

  
438
void av_opt_set_defaults(void *s){
439
    av_opt_set_defaults2(s, 0, 0);
440
}
441

  
libavutil/opt.h
1
/*
2
 * AVOptions
3
 * copyright (c) 2005 Michael Niedermayer <michaelni@gmx.at>
4
 *
5
 * This file is part of FFmpeg.
6
 *
7
 * FFmpeg is free software; you can redistribute it and/or
8
 * modify it under the terms of the GNU Lesser General Public
9
 * License as published by the Free Software Foundation; either
10
 * version 2.1 of the License, or (at your option) any later version.
11
 *
12
 * FFmpeg is distributed in the hope that it will be useful,
13
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
15
 * Lesser General Public License for more details.
16
 *
17
 * You should have received a copy of the GNU Lesser General Public
18
 * License along with FFmpeg; if not, write to the Free Software
19
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20
 */
21

  
22
#ifndef AVUTIL_OPT_H
23
#define AVUTIL_OPT_H
24

  
25
/**
26
 * @file
27
 * AVOptions
28
 */
29

  
30
#include "rational.h"
31
#include "avutil.h"
32

  
33
enum AVOptionType{
34
    FF_OPT_TYPE_FLAGS,
35
    FF_OPT_TYPE_INT,
36
    FF_OPT_TYPE_INT64,
37
    FF_OPT_TYPE_DOUBLE,
38
    FF_OPT_TYPE_FLOAT,
39
    FF_OPT_TYPE_STRING,
40
    FF_OPT_TYPE_RATIONAL,
41
    FF_OPT_TYPE_BINARY,  ///< offset must point to a pointer immediately followed by an int for the length
42
    FF_OPT_TYPE_CONST=128,
43
};
44

  
45
/**
46
 * AVOption
47
 */
48
typedef struct AVOption {
49
    const char *name;
50

  
51
    /**
52
     * short English help text
53
     * @todo What about other languages?
54
     */
55
    const char *help;
56

  
57
    /**
58
     * The offset relative to the context structure where the option
59
     * value is stored. It should be 0 for named constants.
60
     */
61
    int offset;
62
    enum AVOptionType type;
63

  
64
    /**
65
     * the default value for scalar options
66
     */
67
    double default_val;
68
    double min;                 ///< minimum valid value for the option
69
    double max;                 ///< maximum valid value for the option
70

  
71
    int flags;
72
#define AV_OPT_FLAG_ENCODING_PARAM  1   ///< a generic parameter which can be set by the user for muxing or encoding
73
#define AV_OPT_FLAG_DECODING_PARAM  2   ///< a generic parameter which can be set by the user for demuxing or decoding
74
#define AV_OPT_FLAG_METADATA        4   ///< some data extracted or inserted into the file like title, comment, ...
75
#define AV_OPT_FLAG_AUDIO_PARAM     8
76
#define AV_OPT_FLAG_VIDEO_PARAM     16
77
#define AV_OPT_FLAG_SUBTITLE_PARAM  32
78
//FIXME think about enc-audio, ... style flags
79

  
80
    /**
81
     * The logical unit to which the option belongs. Non-constant
82
     * options and corresponding named constants share the same
83
     * unit. May be NULL.
84
     */
85
    const char *unit;
86
} AVOption;
87

  
88
/**
89
 * AVOption2.
90
 * THIS IS NOT PART OF THE API/ABI YET!
91
 * This is identical to AVOption except that default_val was replaced by
92
 * an union, it should be compatible with AVOption on normal platforms.
93
 */
94
typedef struct AVOption2 {
95
    const char *name;
96

  
97
    /**
98
     * short English help text
99
     * @todo What about other languages?
100
     */
101
    const char *help;
102

  
103
    /**
104
     * The offset relative to the context structure where the option
105
     * value is stored. It should be 0 for named constants.
106
     */
107
    int offset;
108
    enum AVOptionType type;
109

  
110
    /**
111
     * the default value for scalar options
112
     */
113
    union {
114
        double dbl;
115
        const char *str;
116
    } default_val;
117

  
118
    double min;                 ///< minimum valid value for the option
119
    double max;                 ///< maximum valid value for the option
120

  
121
    int flags;
122
/*
123
#define AV_OPT_FLAG_ENCODING_PARAM  1   ///< a generic parameter which can be set by the user for muxing or encoding
124
#define AV_OPT_FLAG_DECODING_PARAM  2   ///< a generic parameter which can be set by the user for demuxing or decoding
125
#define AV_OPT_FLAG_METADATA        4   ///< some data extracted or inserted into the file like title, comment, ...
126
#define AV_OPT_FLAG_AUDIO_PARAM     8
127
#define AV_OPT_FLAG_VIDEO_PARAM     16
128
#define AV_OPT_FLAG_SUBTITLE_PARAM  32
129
*/
130
//FIXME think about enc-audio, ... style flags
131

  
132
    /**
133
     * The logical unit to which the option belongs. Non-constant
134
     * options and corresponding named constants share the same
135
     * unit. May be NULL.
136
     */
137
    const char *unit;
138
} AVOption2;
139

  
140

  
141
/**
142
 * Look for an option in obj. Look only for the options which
143
 * have the flags set as specified in mask and flags (that is,
144
 * for which it is the case that opt->flags & mask == flags).
145
 *
146
 * @param[in] obj a pointer to a struct whose first element is a
147
 * pointer to an AVClass
148
 * @param[in] name the name of the option to look for
149
 * @param[in] unit the unit of the option to look for, or any if NULL
150
 * @return a pointer to the option found, or NULL if no option
151
 * has been found
152
 */
153
const AVOption *av_find_opt(void *obj, const char *name, const char *unit, int mask, int flags);
154

  
155
/**
156
 * Set the field of obj with the given name to value.
157
 *
158
 * @param[in] obj A struct whose first element is a pointer to an
159
 * AVClass.
160
 * @param[in] name the name of the field to set
161
 * @param[in] val The value to set. If the field is not of a string
162
 * type, then the given string is parsed.
163
 * SI postfixes and some named scalars are supported.
164
 * If the field is of a numeric type, it has to be a numeric or named
165
 * scalar. Behavior with more than one scalar and +- infix operators
166
 * is undefined.
167
 * If the field is of a flags type, it has to be a sequence of numeric
168
 * scalars or named flags separated by '+' or '-'. Prefixing a flag
169
 * with '+' causes it to be set without affecting the other flags;
170
 * similarly, '-' unsets a flag.
171
 * @param[out] o_out if non-NULL put here a pointer to the AVOption
172
 * found
173
 * @param alloc when 1 then the old value will be av_freed() and the
174
 *                     new av_strduped()
175
 *              when 0 then no av_free() nor av_strdup() will be used
176
 * @return 0 if the value has been set, or an AVERROR code in case of
177
 * error:
178
 * AVERROR(ENOENT) if no matching option exists
179
 * AVERROR(ERANGE) if the value is out of range
180
 * AVERROR(EINVAL) if the value is not valid
181
 */
182
int av_set_string3(void *obj, const char *name, const char *val, int alloc, const AVOption **o_out);
183

  
184
const AVOption *av_set_double(void *obj, const char *name, double n);
185
const AVOption *av_set_q(void *obj, const char *name, AVRational n);
186
const AVOption *av_set_int(void *obj, const char *name, int64_t n);
187
double av_get_double(void *obj, const char *name, const AVOption **o_out);
188
AVRational av_get_q(void *obj, const char *name, const AVOption **o_out);
189
int64_t av_get_int(void *obj, const char *name, const AVOption **o_out);
190
const char *av_get_string(void *obj, const char *name, const AVOption **o_out, char *buf, int buf_len);
191
const AVOption *av_next_option(void *obj, const AVOption *last);
192

  
193
/**
194
 * Show the obj options.
195
 *
196
 * @param req_flags requested flags for the options to show. Show only the
197
 * options for which it is opt->flags & req_flags.
198
 * @param rej_flags rejected flags for the options to show. Show only the
199
 * options for which it is !(opt->flags & req_flags).
200
 * @param av_log_obj log context to use for showing the options
201
 */
202
int av_opt_show2(void *obj, void *av_log_obj, int req_flags, int rej_flags);
203

  
204
void av_opt_set_defaults(void *s);
205
void av_opt_set_defaults2(void *s, int mask, int flags);
... This diff was truncated because it exceeds the maximum size that can be displayed.

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