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Imported Debian version 2.5.0~trusty1.1
[deb_ffmpeg.git] / ffmpeg / libavutil / opt.c
CommitLineData
2ba45a60
DM		 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 "avstring.h"
30#include "channel_layout.h"
31#include "common.h"
32#include "opt.h"
33#include "eval.h"
34#include "dict.h"
35#include "log.h"
36#include "parseutils.h"
37#include "pixdesc.h"
38#include "mathematics.h"
39#include "samplefmt.h"
f6fa7814 40#include "bprint.h"
2ba45a60
DM		 41
42#include <float.h>
43
2ba45a60 44#if FF_API_OLD_AVOPTIONS
f6fa7814 45const AVOption *av_next_option(FF_CONST_AVUTIL55 void *obj, const AVOption *last)
2ba45a60
DM		 46{
47 return av_opt_next(obj, last);
48}
49#endif
50
f6fa7814 51const AVOption *av_opt_next(FF_CONST_AVUTIL55 void *obj, const AVOption *last)
2ba45a60 52{
f6fa7814
DM		 53 const AVClass *class;
54 if (!obj)
55 return NULL;
56 class = *(const AVClass**)obj;
2ba45a60
DM		 57 if (!last && class && class->option && class->option[0].name)
58 return class->option;
59 if (last && last[1].name)
60 return ++last;
61 return NULL;
62}
63
f6fa7814 64static int read_number(const AVOption *o, const void *dst, double *num, int *den, int64_t *intnum)
2ba45a60
DM		 65{
66 switch (o->type) {
67 case AV_OPT_TYPE_FLAGS: *intnum = *(unsigned int*)dst;return 0;
68 case AV_OPT_TYPE_PIXEL_FMT:
69 case AV_OPT_TYPE_SAMPLE_FMT:
70 case AV_OPT_TYPE_INT: *intnum = *(int *)dst;return 0;
71 case AV_OPT_TYPE_CHANNEL_LAYOUT:
72 case AV_OPT_TYPE_DURATION:
73 case AV_OPT_TYPE_INT64: *intnum = *(int64_t *)dst;return 0;
74 case AV_OPT_TYPE_FLOAT: *num = *(float *)dst;return 0;
75 case AV_OPT_TYPE_DOUBLE: *num = *(double *)dst;return 0;
76 case AV_OPT_TYPE_RATIONAL: *intnum = ((AVRational*)dst)->num;
77 *den = ((AVRational*)dst)->den;
78 return 0;
79 case AV_OPT_TYPE_CONST: *num = o->default_val.dbl; return 0;
80 }
81 return AVERROR(EINVAL);
82}
83
84static int write_number(void *obj, const AVOption *o, void *dst, double num, int den, int64_t intnum)
85{
86 if (o->type != AV_OPT_TYPE_FLAGS &&
87 (o->max * den < num * intnum || o->min * den > num * intnum)) {
88 av_log(obj, AV_LOG_ERROR, "Value %f for parameter '%s' out of range [%g - %g]\n",
89 num*intnum/den, o->name, o->min, o->max);
90 return AVERROR(ERANGE);
91 }
92 if (o->type == AV_OPT_TYPE_FLAGS) {
93 double d = num*intnum/den;
94 if (d < -1.5 || d > 0xFFFFFFFF+0.5 || (llrint(d*256) & 255)) {
95 av_log(obj, AV_LOG_ERROR,
96 "Value %f for parameter '%s' is not a valid set of 32bit integer flags\n",
97 num*intnum/den, o->name);
98 return AVERROR(ERANGE);
99 }
100 }
101
102 switch (o->type) {
103 case AV_OPT_TYPE_FLAGS:
104 case AV_OPT_TYPE_PIXEL_FMT:
105 case AV_OPT_TYPE_SAMPLE_FMT:
106 case AV_OPT_TYPE_INT: *(int *)dst= llrint(num/den)*intnum; break;
107 case AV_OPT_TYPE_DURATION:
108 case AV_OPT_TYPE_CHANNEL_LAYOUT:
109 case AV_OPT_TYPE_INT64: *(int64_t *)dst= llrint(num/den)*intnum; break;
110 case AV_OPT_TYPE_FLOAT: *(float *)dst= num*intnum/den; break;
111 case AV_OPT_TYPE_DOUBLE:*(double *)dst= num*intnum/den; break;
112 case AV_OPT_TYPE_RATIONAL:
113 if ((int)num == num) *(AVRational*)dst= (AVRational){num*intnum, den};
114 else *(AVRational*)dst= av_d2q(num*intnum/den, 1<<24);
115 break;
116 default:
117 return AVERROR(EINVAL);
118 }
119 return 0;
120}
121
122static int hexchar2int(char c) {
123 if (c >= '0' && c <= '9') return c - '0';
124 if (c >= 'a' && c <= 'f') return c - 'a' + 10;
125 if (c >= 'A' && c <= 'F') return c - 'A' + 10;
126 return -1;
127}
128
129static int set_string_binary(void *obj, const AVOption *o, const char *val, uint8_t **dst)
130{
131 int *lendst = (int *)(dst + 1);
132 uint8_t *bin, *ptr;
f6fa7814 133 int len;
2ba45a60
DM		 134
135 av_freep(dst);
136 *lendst = 0;
137
f6fa7814
DM		 138 if (!val || !(len = strlen(val)))
139 return 0;
140
2ba45a60
DM		 141 if (len & 1)
142 return AVERROR(EINVAL);
143 len /= 2;
144
145 ptr = bin = av_malloc(len);
146 while (*val) {
147 int a = hexchar2int(*val++);
148 int b = hexchar2int(*val++);
149 if (a < 0 || b < 0) {
150 av_free(bin);
151 return AVERROR(EINVAL);
152 }
153 *ptr++ = (a << 4) | b;
154 }
155 *dst = bin;
156 *lendst = len;
157
158 return 0;
159}
160
161static int set_string(void *obj, const AVOption *o, const char *val, uint8_t **dst)
162{
163 av_freep(dst);
164 *dst = av_strdup(val);
165 return 0;
166}
167
168#define DEFAULT_NUMVAL(opt) ((opt->type == AV_OPT_TYPE_INT64 || \
169 opt->type == AV_OPT_TYPE_CONST || \
170 opt->type == AV_OPT_TYPE_FLAGS || \
171 opt->type == AV_OPT_TYPE_INT) ? \
172 opt->default_val.i64 : opt->default_val.dbl)
173
174static int set_string_number(void *obj, void *target_obj, const AVOption *o, const char *val, void *dst)
175{
176 int ret = 0;
177 int num, den;
178 char c;
179
180 if (sscanf(val, "%d%*1[:/]%d%c", &num, &den, &c) == 2) {
181 if ((ret = write_number(obj, o, dst, 1, den, num)) >= 0)
182 return ret;
183 ret = 0;
184 }
185
186 for (;;) {
187 int i = 0;
188 char buf[256];
189 int cmd = 0;
190 double d;
191 int64_t intnum = 1;
192
193 if (o->type == AV_OPT_TYPE_FLAGS) {
194 if (*val == '+' || *val == '-')
195 cmd = *(val++);
196 for (; i < sizeof(buf) - 1 && val[i] && val[i] != '+' && val[i] != '-'; i++)
197 buf[i] = val[i];
198 buf[i] = 0;
199 }
200
201 {
202 const AVOption *o_named = av_opt_find(target_obj, i ? buf : val, o->unit, 0, 0);
203 int res;
204 int ci = 0;
205 double const_values[64];
206 const char * const_names[64];
207 if (o_named && o_named->type == AV_OPT_TYPE_CONST)
208 d = DEFAULT_NUMVAL(o_named);
209 else {
210 if (o->unit) {
211 for (o_named = NULL; o_named = av_opt_next(target_obj, o_named); ) {
212 if (o_named->type == AV_OPT_TYPE_CONST &&
213 o_named->unit &&
214 !strcmp(o_named->unit, o->unit)) {
215 if (ci + 6 >= FF_ARRAY_ELEMS(const_values)) {
216 av_log(obj, AV_LOG_ERROR, "const_values array too small for %s\n", o->unit);
217 return AVERROR_PATCHWELCOME;
218 }
219 const_names [ci ] = o_named->name;
220 const_values[ci++] = DEFAULT_NUMVAL(o_named);
221 }
222 }
223 }
224 const_names [ci ] = "default";
225 const_values[ci++] = DEFAULT_NUMVAL(o);
226 const_names [ci ] = "max";
227 const_values[ci++] = o->max;
228 const_names [ci ] = "min";
229 const_values[ci++] = o->min;
230 const_names [ci ] = "none";
231 const_values[ci++] = 0;
232 const_names [ci ] = "all";
233 const_values[ci++] = ~0;
234 const_names [ci] = NULL;
235 const_values[ci] = 0;
236
237 res = av_expr_parse_and_eval(&d, i ? buf : val, const_names,
238 const_values, NULL, NULL, NULL, NULL, NULL, 0, obj);
239 if (res < 0) {
240 av_log(obj, AV_LOG_ERROR, "Unable to parse option value \"%s\"\n", val);
241 return res;
242 }
243 }
244 }
245 if (o->type == AV_OPT_TYPE_FLAGS) {
246 read_number(o, dst, NULL, NULL, &intnum);
247 if (cmd == '+') d = intnum | (int64_t)d;
248 else if (cmd == '-') d = intnum &~(int64_t)d;
249 }
250
251 if ((ret = write_number(obj, o, dst, d, 1, 1)) < 0)
252 return ret;
253 val += i;
254 if (!i || !*val)
255 return 0;
256 }
257
258 return 0;
259}
260
261static int set_string_image_size(void *obj, const AVOption *o, const char *val, int *dst)
262{
263 int ret;
264
265 if (!val || !strcmp(val, "none")) {
266 dst[0] =
267 dst[1] = 0;
268 return 0;
269 }
270 ret = av_parse_video_size(dst, dst + 1, val);
271 if (ret < 0)
272 av_log(obj, AV_LOG_ERROR, "Unable to parse option value \"%s\" as image size\n", val);
273 return ret;
274}
275
276static int set_string_video_rate(void *obj, const AVOption *o, const char *val, AVRational *dst)
277{
278 int ret;
279 if (!val) {
280 ret = AVERROR(EINVAL);
281 } else {
282 ret = av_parse_video_rate(dst, val);
283 }
284 if (ret < 0)
285 av_log(obj, AV_LOG_ERROR, "Unable to parse option value \"%s\" as video rate\n", val);
286 return ret;
287}
288
289static int set_string_color(void *obj, const AVOption *o, const char *val, uint8_t *dst)
290{
291 int ret;
292
293 if (!val) {
294 return 0;
295 } else {
296 ret = av_parse_color(dst, val, -1, obj);
297 if (ret < 0)
298 av_log(obj, AV_LOG_ERROR, "Unable to parse option value \"%s\" as color\n", val);
299 return ret;
300 }
301 return 0;
302}
303
304static int set_string_fmt(void *obj, const AVOption *o, const char *val, uint8_t *dst,
305 int fmt_nb, int ((*get_fmt)(const char *)), const char *desc)
306{
307 int fmt, min, max;
308
309 if (!val || !strcmp(val, "none")) {
310 fmt = -1;
311 } else {
312 fmt = get_fmt(val);
313 if (fmt == -1) {
314 char *tail;
315 fmt = strtol(val, &tail, 0);
316 if (*tail || (unsigned)fmt >= fmt_nb) {
317 av_log(obj, AV_LOG_ERROR,
318 "Unable to parse option value \"%s\" as %s\n", val, desc);
319 return AVERROR(EINVAL);
320 }
321 }
322 }
323
324 min = FFMAX(o->min, -1);
325 max = FFMIN(o->max, fmt_nb-1);
326
327 // hack for compatibility with old ffmpeg
328 if(min == 0 && max == 0) {
329 min = -1;
330 max = fmt_nb-1;
331 }
332
333 if (fmt < min || fmt > max) {
334 av_log(obj, AV_LOG_ERROR,
335 "Value %d for parameter '%s' out of %s format range [%d - %d]\n",
336 fmt, o->name, desc, min, max);
337 return AVERROR(ERANGE);
338 }
339
340 *(int *)dst = fmt;
341 return 0;
342}
343
344static int set_string_pixel_fmt(void *obj, const AVOption *o, const char *val, uint8_t *dst)
345{
346 return set_string_fmt(obj, o, val, dst,
347 AV_PIX_FMT_NB, av_get_pix_fmt, "pixel format");
348}
349
350static int set_string_sample_fmt(void *obj, const AVOption *o, const char *val, uint8_t *dst)
351{
352 return set_string_fmt(obj, o, val, dst,
353 AV_SAMPLE_FMT_NB, av_get_sample_fmt, "sample format");
354}
355
356#if FF_API_OLD_AVOPTIONS
357int av_set_string3(void *obj, const char *name, const char *val, int alloc, const AVOption **o_out)
358{
359 const AVOption *o = av_opt_find(obj, name, NULL, 0, 0);
360 if (o_out)
361 *o_out = o;
362 return av_opt_set(obj, name, val, 0);
363}
364#endif
365
366int av_opt_set(void *obj, const char *name, const char *val, int search_flags)
367{
368 int ret = 0;
369 void *dst, *target_obj;
370 const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
371 if (!o || !target_obj)
372 return AVERROR_OPTION_NOT_FOUND;
373 if (!val && (o->type != AV_OPT_TYPE_STRING &&
374 o->type != AV_OPT_TYPE_PIXEL_FMT && o->type != AV_OPT_TYPE_SAMPLE_FMT &&
375 o->type != AV_OPT_TYPE_IMAGE_SIZE && o->type != AV_OPT_TYPE_VIDEO_RATE &&
376 o->type != AV_OPT_TYPE_DURATION && o->type != AV_OPT_TYPE_COLOR &&
377 o->type != AV_OPT_TYPE_CHANNEL_LAYOUT))
378 return AVERROR(EINVAL);
379
380 if (o->flags & AV_OPT_FLAG_READONLY)
381 return AVERROR(EINVAL);
382
383 dst = ((uint8_t*)target_obj) + o->offset;
384 switch (o->type) {
385 case AV_OPT_TYPE_STRING: return set_string(obj, o, val, dst);
386 case AV_OPT_TYPE_BINARY: return set_string_binary(obj, o, val, dst);
387 case AV_OPT_TYPE_FLAGS:
388 case AV_OPT_TYPE_INT:
389 case AV_OPT_TYPE_INT64:
390 case AV_OPT_TYPE_FLOAT:
391 case AV_OPT_TYPE_DOUBLE:
392 case AV_OPT_TYPE_RATIONAL: return set_string_number(obj, target_obj, o, val, dst);
393 case AV_OPT_TYPE_IMAGE_SIZE: return set_string_image_size(obj, o, val, dst);
394 case AV_OPT_TYPE_VIDEO_RATE: return set_string_video_rate(obj, o, val, dst);
395 case AV_OPT_TYPE_PIXEL_FMT: return set_string_pixel_fmt(obj, o, val, dst);
396 case AV_OPT_TYPE_SAMPLE_FMT: return set_string_sample_fmt(obj, o, val, dst);
397 case AV_OPT_TYPE_DURATION:
398 if (!val) {
399 *(int64_t *)dst = 0;
400 return 0;
401 } else {
402 if ((ret = av_parse_time(dst, val, 1)) < 0)
403 av_log(obj, AV_LOG_ERROR, "Unable to parse option value \"%s\" as duration\n", val);
404 return ret;
405 }
406 break;
407 case AV_OPT_TYPE_COLOR: return set_string_color(obj, o, val, dst);
408 case AV_OPT_TYPE_CHANNEL_LAYOUT:
409 if (!val || !strcmp(val, "none")) {
410 *(int64_t *)dst = 0;
411 } else {
412#if FF_API_GET_CHANNEL_LAYOUT_COMPAT
413 int64_t cl = ff_get_channel_layout(val, 0);
414#else
415 int64_t cl = av_get_channel_layout(val);
416#endif
417 if (!cl) {
418 av_log(obj, AV_LOG_ERROR, "Unable to parse option value \"%s\" as channel layout\n", val);
419 ret = AVERROR(EINVAL);
420 }
421 *(int64_t *)dst = cl;
422 return ret;
423 }
424 break;
425 }
426
427 av_log(obj, AV_LOG_ERROR, "Invalid option type.\n");
428 return AVERROR(EINVAL);
429}
430
431#define OPT_EVAL_NUMBER(name, opttype, vartype)\
432 int av_opt_eval_ ## name(void *obj, const AVOption *o, const char *val, vartype *name ## _out)\
433 {\
434 if (!o || o->type != opttype || o->flags & AV_OPT_FLAG_READONLY)\
435 return AVERROR(EINVAL);\
436 return set_string_number(obj, obj, o, val, name ## _out);\
437 }
438
439OPT_EVAL_NUMBER(flags, AV_OPT_TYPE_FLAGS, int)
440OPT_EVAL_NUMBER(int, AV_OPT_TYPE_INT, int)
441OPT_EVAL_NUMBER(int64, AV_OPT_TYPE_INT64, int64_t)
442OPT_EVAL_NUMBER(float, AV_OPT_TYPE_FLOAT, float)
443OPT_EVAL_NUMBER(double, AV_OPT_TYPE_DOUBLE, double)
444OPT_EVAL_NUMBER(q, AV_OPT_TYPE_RATIONAL, AVRational)
445
446static int set_number(void *obj, const char *name, double num, int den, int64_t intnum,
447 int search_flags)
448{
449 void *dst, *target_obj;
450 const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
451
452 if (!o || !target_obj)
453 return AVERROR_OPTION_NOT_FOUND;
454
455 if (o->flags & AV_OPT_FLAG_READONLY)
456 return AVERROR(EINVAL);
457
458 dst = ((uint8_t*)target_obj) + o->offset;
459 return write_number(obj, o, dst, num, den, intnum);
460}
461
462#if FF_API_OLD_AVOPTIONS
463const AVOption *av_set_double(void *obj, const char *name, double n)
464{
465 const AVOption *o = av_opt_find(obj, name, NULL, 0, 0);
466 if (set_number(obj, name, n, 1, 1, 0) < 0)
467 return NULL;
468 return o;
469}
470
471const AVOption *av_set_q(void *obj, const char *name, AVRational n)
472{
473 const AVOption *o = av_opt_find(obj, name, NULL, 0, 0);
474 if (set_number(obj, name, n.num, n.den, 1, 0) < 0)
475 return NULL;
476 return o;
477}
478
479const AVOption *av_set_int(void *obj, const char *name, int64_t n)
480{
481 const AVOption *o = av_opt_find(obj, name, NULL, 0, 0);
482 if (set_number(obj, name, 1, 1, n, 0) < 0)
483 return NULL;
484 return o;
485}
486#endif
487
488int av_opt_set_int(void *obj, const char *name, int64_t val, int search_flags)
489{
490 return set_number(obj, name, 1, 1, val, search_flags);
491}
492
493int av_opt_set_double(void *obj, const char *name, double val, int search_flags)
494{
495 return set_number(obj, name, val, 1, 1, search_flags);
496}
497
498int av_opt_set_q(void *obj, const char *name, AVRational val, int search_flags)
499{
500 return set_number(obj, name, val.num, val.den, 1, search_flags);
501}
502
503int av_opt_set_bin(void *obj, const char *name, const uint8_t *val, int len, int search_flags)
504{
505 void *target_obj;
506 const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
507 uint8_t *ptr;
508 uint8_t **dst;
509 int *lendst;
510
511 if (!o || !target_obj)
512 return AVERROR_OPTION_NOT_FOUND;
513
514 if (o->type != AV_OPT_TYPE_BINARY || o->flags & AV_OPT_FLAG_READONLY)
515 return AVERROR(EINVAL);
516
517 ptr = len ? av_malloc(len) : NULL;
518 if (len && !ptr)
519 return AVERROR(ENOMEM);
520
521 dst = (uint8_t **)(((uint8_t *)target_obj) + o->offset);
522 lendst = (int *)(dst + 1);
523
524 av_free(*dst);
525 *dst = ptr;
526 *lendst = len;
527 if (len)
528 memcpy(ptr, val, len);
529
530 return 0;
531}
532
533int av_opt_set_image_size(void *obj, const char *name, int w, int h, int search_flags)
534{
535 void *target_obj;
536 const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
537
538 if (!o || !target_obj)
539 return AVERROR_OPTION_NOT_FOUND;
540 if (o->type != AV_OPT_TYPE_IMAGE_SIZE) {
541 av_log(obj, AV_LOG_ERROR,
542 "The value set by option '%s' is not an image size.\n", o->name);
543 return AVERROR(EINVAL);
544 }
545 if (w<0 || h<0) {
546 av_log(obj, AV_LOG_ERROR,
547 "Invalid negative size value %dx%d for size '%s'\n", w, h, o->name);
548 return AVERROR(EINVAL);
549 }
550 *(int *)(((uint8_t *)target_obj) + o->offset) = w;
551 *(int *)(((uint8_t *)target_obj+sizeof(int)) + o->offset) = h;
552 return 0;
553}
554
555int av_opt_set_video_rate(void *obj, const char *name, AVRational val, int search_flags)
556{
557 void *target_obj;
558 const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
559
560 if (!o || !target_obj)
561 return AVERROR_OPTION_NOT_FOUND;
562 if (o->type != AV_OPT_TYPE_VIDEO_RATE) {
563 av_log(obj, AV_LOG_ERROR,
564 "The value set by option '%s' is not a video rate.\n", o->name);
565 return AVERROR(EINVAL);
566 }
567 if (val.num <= 0 || val.den <= 0)
568 return AVERROR(EINVAL);
569 return set_number(obj, name, val.num, val.den, 1, search_flags);
570}
571
572static int set_format(void *obj, const char *name, int fmt, int search_flags,
573 enum AVOptionType type, const char *desc, int nb_fmts)
574{
575 void *target_obj;
576 const AVOption *o = av_opt_find2(obj, name, NULL, 0,
577 search_flags, &target_obj);
578 int min, max;
579
580 if (!o || !target_obj)
581 return AVERROR_OPTION_NOT_FOUND;
582 if (o->type != type) {
583 av_log(obj, AV_LOG_ERROR,
584 "The value set by option '%s' is not a %s format", name, desc);
585 return AVERROR(EINVAL);
586 }
587
588 min = FFMAX(o->min, -1);
589 max = FFMIN(o->max, nb_fmts-1);
590
591 if (fmt < min || fmt > max) {
592 av_log(obj, AV_LOG_ERROR,
593 "Value %d for parameter '%s' out of %s format range [%d - %d]\n",
594 fmt, name, desc, min, max);
595 return AVERROR(ERANGE);
596 }
597 *(int *)(((uint8_t *)target_obj) + o->offset) = fmt;
598 return 0;
599}
600
601int av_opt_set_pixel_fmt(void *obj, const char *name, enum AVPixelFormat fmt, int search_flags)
602{
603 return set_format(obj, name, fmt, search_flags, AV_OPT_TYPE_PIXEL_FMT, "pixel", AV_PIX_FMT_NB);
604}
605
606int av_opt_set_sample_fmt(void *obj, const char *name, enum AVSampleFormat fmt, int search_flags)
607{
608 return set_format(obj, name, fmt, search_flags, AV_OPT_TYPE_SAMPLE_FMT, "sample", AV_SAMPLE_FMT_NB);
609}
610
611int av_opt_set_channel_layout(void *obj, const char *name, int64_t cl, int search_flags)
612{
613 void *target_obj;
614 const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
615
616 if (!o || !target_obj)
617 return AVERROR_OPTION_NOT_FOUND;
618 if (o->type != AV_OPT_TYPE_CHANNEL_LAYOUT) {
619 av_log(obj, AV_LOG_ERROR,
620 "The value set by option '%s' is not a channel layout.\n", o->name);
621 return AVERROR(EINVAL);
622 }
623 *(int64_t *)(((uint8_t *)target_obj) + o->offset) = cl;
624 return 0;
625}
626
627#if FF_API_OLD_AVOPTIONS
628/**
629 *
630 * @param buf a buffer which is used for returning non string values as strings, can be NULL
631 * @param buf_len allocated length in bytes of buf
632 */
633const char *av_get_string(void *obj, const char *name, const AVOption **o_out, char *buf, int buf_len)
634{
635 const AVOption *o = av_opt_find(obj, name, NULL, 0, AV_OPT_SEARCH_CHILDREN);
636 void *dst;
637 uint8_t *bin;
638 int len, i;
639 if (!o)
640 return NULL;
641 if (o->type != AV_OPT_TYPE_STRING && (!buf || !buf_len))
642 return NULL;
643
644 dst= ((uint8_t*)obj) + o->offset;
645 if (o_out) *o_out= o;
646
647 switch (o->type) {
648 case AV_OPT_TYPE_FLAGS: snprintf(buf, buf_len, "0x%08X",*(int *)dst);break;
649 case AV_OPT_TYPE_INT: snprintf(buf, buf_len, "%d" , *(int *)dst);break;
650 case AV_OPT_TYPE_INT64: snprintf(buf, buf_len, "%"PRId64, *(int64_t*)dst);break;
651 case AV_OPT_TYPE_FLOAT: snprintf(buf, buf_len, "%f" , *(float *)dst);break;
652 case AV_OPT_TYPE_DOUBLE: snprintf(buf, buf_len, "%f" , *(double *)dst);break;
653 case AV_OPT_TYPE_RATIONAL: snprintf(buf, buf_len, "%d/%d", ((AVRational*)dst)->num, ((AVRational*)dst)->den);break;
654 case AV_OPT_TYPE_CONST: snprintf(buf, buf_len, "%f" , o->default_val.dbl);break;
655 case AV_OPT_TYPE_STRING: return *(void**)dst;
656 case AV_OPT_TYPE_BINARY:
657 len = *(int*)(((uint8_t *)dst) + sizeof(uint8_t *));
658 if (len >= (buf_len + 1)/2) return NULL;
659 bin = *(uint8_t**)dst;
660 for (i = 0; i < len; i++) snprintf(buf + i*2, 3, "%02X", bin[i]);
661 break;
662 default: return NULL;
663 }
664 return buf;
665}
666#endif
667
668int av_opt_set_dict_val(void *obj, const char *name, const AVDictionary *val, int search_flags)
669{
670 void *target_obj;
671 AVDictionary **dst;
672 const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
673
674 if (!o || !target_obj)
675 return AVERROR_OPTION_NOT_FOUND;
676 if (o->flags & AV_OPT_FLAG_READONLY)
677 return AVERROR(EINVAL);
678
679 dst = (AVDictionary **)(((uint8_t *)target_obj) + o->offset);
680 av_dict_free(dst);
681 av_dict_copy(dst, val, 0);
682
683 return 0;
684}
685
686int av_opt_get(void *obj, const char *name, int search_flags, uint8_t **out_val)
687{
688 void *dst, *target_obj;
689 const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
690 uint8_t *bin, buf[128];
691 int len, i, ret;
692 int64_t i64;
693
694 if (!o || !target_obj || (o->offset<=0 && o->type != AV_OPT_TYPE_CONST))
695 return AVERROR_OPTION_NOT_FOUND;
696
697 dst = (uint8_t*)target_obj + o->offset;
698
699 buf[0] = 0;
700 switch (o->type) {
701 case AV_OPT_TYPE_FLAGS: ret = snprintf(buf, sizeof(buf), "0x%08X", *(int *)dst);break;
702 case AV_OPT_TYPE_INT: ret = snprintf(buf, sizeof(buf), "%d" , *(int *)dst);break;
703 case AV_OPT_TYPE_INT64: ret = snprintf(buf, sizeof(buf), "%"PRId64, *(int64_t*)dst);break;
704 case AV_OPT_TYPE_FLOAT: ret = snprintf(buf, sizeof(buf), "%f" , *(float *)dst);break;
705 case AV_OPT_TYPE_DOUBLE: ret = snprintf(buf, sizeof(buf), "%f" , *(double *)dst);break;
706 case AV_OPT_TYPE_VIDEO_RATE:
707 case AV_OPT_TYPE_RATIONAL: ret = snprintf(buf, sizeof(buf), "%d/%d", ((AVRational*)dst)->num, ((AVRational*)dst)->den);break;
708 case AV_OPT_TYPE_CONST: ret = snprintf(buf, sizeof(buf), "%f" , o->default_val.dbl);break;
709 case AV_OPT_TYPE_STRING:
710 if (*(uint8_t**)dst)
711 *out_val = av_strdup(*(uint8_t**)dst);
712 else
713 *out_val = av_strdup("");
714 return 0;
715 case AV_OPT_TYPE_BINARY:
716 len = *(int*)(((uint8_t *)dst) + sizeof(uint8_t *));
717 if ((uint64_t)len*2 + 1 > INT_MAX)
718 return AVERROR(EINVAL);
719 if (!(*out_val = av_malloc(len*2 + 1)))
720 return AVERROR(ENOMEM);
f6fa7814
DM		 721 if (!len) {
722 *out_val[0] = '\0';
723 return 0;
724 }
2ba45a60
DM		 725 bin = *(uint8_t**)dst;
726 for (i = 0; i < len; i++)
727 snprintf(*out_val + i*2, 3, "%02X", bin[i]);
728 return 0;
729 case AV_OPT_TYPE_IMAGE_SIZE:
730 ret = snprintf(buf, sizeof(buf), "%dx%d", ((int *)dst)[0], ((int *)dst)[1]);
731 break;
732 case AV_OPT_TYPE_PIXEL_FMT:
733 ret = snprintf(buf, sizeof(buf), "%s", (char *)av_x_if_null(av_get_pix_fmt_name(*(enum AVPixelFormat *)dst), "none"));
734 break;
735 case AV_OPT_TYPE_SAMPLE_FMT:
736 ret = snprintf(buf, sizeof(buf), "%s", (char *)av_x_if_null(av_get_sample_fmt_name(*(enum AVSampleFormat *)dst), "none"));
737 break;
738 case AV_OPT_TYPE_DURATION:
739 i64 = *(int64_t *)dst;
f6fa7814 740 ret = snprintf(buf, sizeof(buf), "%"PRIi64":%02d:%02d.%06d",
2ba45a60
DM		 741 i64 / 3600000000, (int)((i64 / 60000000) % 60),
742 (int)((i64 / 1000000) % 60), (int)(i64 % 1000000));
743 break;
744 case AV_OPT_TYPE_COLOR:
f6fa7814
DM		 745 ret = snprintf(buf, sizeof(buf), "0x%02x%02x%02x%02x",
746 (int)((uint8_t *)dst)[0], (int)((uint8_t *)dst)[1],
747 (int)((uint8_t *)dst)[2], (int)((uint8_t *)dst)[3]);
2ba45a60
DM		 748 break;
749 case AV_OPT_TYPE_CHANNEL_LAYOUT:
750 i64 = *(int64_t *)dst;
751 ret = snprintf(buf, sizeof(buf), "0x%"PRIx64, i64);
752 break;
753 default:
754 return AVERROR(EINVAL);
755 }
756
757 if (ret >= sizeof(buf))
758 return AVERROR(EINVAL);
759 *out_val = av_strdup(buf);
760 return 0;
761}
762
763static int get_number(void *obj, const char *name, const AVOption **o_out, double *num, int *den, int64_t *intnum,
764 int search_flags)
765{
766 void *dst, *target_obj;
767 const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
768 if (!o || !target_obj)
769 goto error;
770
771 dst = ((uint8_t*)target_obj) + o->offset;
772
773 if (o_out) *o_out= o;
774
775 return read_number(o, dst, num, den, intnum);
776
777error:
778 *den=*intnum=0;
779 return -1;
780}
781
782#if FF_API_OLD_AVOPTIONS
783double av_get_double(void *obj, const char *name, const AVOption **o_out)
784{
785 int64_t intnum=1;
786 double num=1;
787 int den=1;
788
789 if (get_number(obj, name, o_out, &num, &den, &intnum, 0) < 0)
790 return NAN;
791 return num*intnum/den;
792}
793
794AVRational av_get_q(void *obj, const char *name, const AVOption **o_out)
795{
796 int64_t intnum=1;
797 double num=1;
798 int den=1;
799
800 if (get_number(obj, name, o_out, &num, &den, &intnum, 0) < 0)
801 return (AVRational){0, 0};
802 if (num == 1.0 && (int)intnum == intnum)
803 return (AVRational){intnum, den};
804 else
805 return av_d2q(num*intnum/den, 1<<24);
806}
807
808int64_t av_get_int(void *obj, const char *name, const AVOption **o_out)
809{
810 int64_t intnum=1;
811 double num=1;
812 int den=1;
813
814 if (get_number(obj, name, o_out, &num, &den, &intnum, 0) < 0)
815 return -1;
816 return num*intnum/den;
817}
818#endif
819
820int av_opt_get_int(void *obj, const char *name, int search_flags, int64_t *out_val)
821{
822 int64_t intnum = 1;
823 double num = 1;
824 int ret, den = 1;
825
826 if ((ret = get_number(obj, name, NULL, &num, &den, &intnum, search_flags)) < 0)
827 return ret;
828 *out_val = num*intnum/den;
829 return 0;
830}
831
832int av_opt_get_double(void *obj, const char *name, int search_flags, double *out_val)
833{
834 int64_t intnum = 1;
835 double num = 1;
836 int ret, den = 1;
837
838 if ((ret = get_number(obj, name, NULL, &num, &den, &intnum, search_flags)) < 0)
839 return ret;
840 *out_val = num*intnum/den;
841 return 0;
842}
843
844int av_opt_get_q(void *obj, const char *name, int search_flags, AVRational *out_val)
845{
846 int64_t intnum = 1;
847 double num = 1;
848 int ret, den = 1;
849
850 if ((ret = get_number(obj, name, NULL, &num, &den, &intnum, search_flags)) < 0)
851 return ret;
852
853 if (num == 1.0 && (int)intnum == intnum)
854 *out_val = (AVRational){intnum, den};
855 else
856 *out_val = av_d2q(num*intnum/den, 1<<24);
857 return 0;
858}
859
860int av_opt_get_image_size(void *obj, const char *name, int search_flags, int *w_out, int *h_out)
861{
862 void *dst, *target_obj;
863 const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
864 if (!o || !target_obj)
865 return AVERROR_OPTION_NOT_FOUND;
866 if (o->type != AV_OPT_TYPE_IMAGE_SIZE) {
867 av_log(obj, AV_LOG_ERROR,
868 "The value for option '%s' is not an image size.\n", name);
869 return AVERROR(EINVAL);
870 }
871
872 dst = ((uint8_t*)target_obj) + o->offset;
873 if (w_out) *w_out = *(int *)dst;
874 if (h_out) *h_out = *((int *)dst+1);
875 return 0;
876}
877
878int av_opt_get_video_rate(void *obj, const char *name, int search_flags, AVRational *out_val)
879{
880 int64_t intnum = 1;
881 double num = 1;
882 int ret, den = 1;
883
884 if ((ret = get_number(obj, name, NULL, &num, &den, &intnum, search_flags)) < 0)
885 return ret;
886
887 if (num == 1.0 && (int)intnum == intnum)
888 *out_val = (AVRational){intnum, den};
889 else
890 *out_val = av_d2q(num*intnum/den, 1<<24);
891 return 0;
892}
893
894static int get_format(void *obj, const char *name, int search_flags, int *out_fmt,
895 enum AVOptionType type, const char *desc)
896{
897 void *dst, *target_obj;
898 const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
899 if (!o || !target_obj)
900 return AVERROR_OPTION_NOT_FOUND;
901 if (o->type != type) {
902 av_log(obj, AV_LOG_ERROR,
903 "The value for option '%s' is not a %s format.\n", desc, name);
904 return AVERROR(EINVAL);
905 }
906
907 dst = ((uint8_t*)target_obj) + o->offset;
908 *out_fmt = *(int *)dst;
909 return 0;
910}
911
912int av_opt_get_pixel_fmt(void *obj, const char *name, int search_flags, enum AVPixelFormat *out_fmt)
913{
914 return get_format(obj, name, search_flags, out_fmt, AV_OPT_TYPE_PIXEL_FMT, "pixel");
915}
916
917int av_opt_get_sample_fmt(void *obj, const char *name, int search_flags, enum AVSampleFormat *out_fmt)
918{
919 return get_format(obj, name, search_flags, out_fmt, AV_OPT_TYPE_SAMPLE_FMT, "sample");
920}
921
922int av_opt_get_channel_layout(void *obj, const char *name, int search_flags, int64_t *cl)
923{
924 void *dst, *target_obj;
925 const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
926 if (!o || !target_obj)
927 return AVERROR_OPTION_NOT_FOUND;
928 if (o->type != AV_OPT_TYPE_CHANNEL_LAYOUT) {
929 av_log(obj, AV_LOG_ERROR,
930 "The value for option '%s' is not a channel layout.\n", name);
931 return AVERROR(EINVAL);
932 }
933
934 dst = ((uint8_t*)target_obj) + o->offset;
935 *cl = *(int64_t *)dst;
936 return 0;
937}
938
939int av_opt_get_dict_val(void *obj, const char *name, int search_flags, AVDictionary **out_val)
940{
941 void *target_obj;
942 AVDictionary *src;
943 const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
944
945 if (!o || !target_obj)
946 return AVERROR_OPTION_NOT_FOUND;
947 if (o->type != AV_OPT_TYPE_DICT)
948 return AVERROR(EINVAL);
949
950 src = *(AVDictionary **)(((uint8_t *)target_obj) + o->offset);
951 av_dict_copy(out_val, src, 0);
952
953 return 0;
954}
955
956int av_opt_flag_is_set(void *obj, const char *field_name, const char *flag_name)
957{
958 const AVOption *field = av_opt_find(obj, field_name, NULL, 0, 0);
959 const AVOption *flag = av_opt_find(obj, flag_name,
960 field ? field->unit : NULL, 0, 0);
961 int64_t res;
962
963 if (!field || !flag || flag->type != AV_OPT_TYPE_CONST ||
964 av_opt_get_int(obj, field_name, 0, &res) < 0)
965 return 0;
966 return res & flag->default_val.i64;
967}
968
969static void log_value(void *av_log_obj, int level, double d)
970{
971 if (d == INT_MAX) {
972 av_log(av_log_obj, level, "INT_MAX");
973 } else if (d == INT_MIN) {
974 av_log(av_log_obj, level, "INT_MIN");
975 } else if (d == UINT32_MAX) {
976 av_log(av_log_obj, level, "UINT32_MAX");
977 } else if (d == (double)INT64_MAX) {
978 av_log(av_log_obj, level, "I64_MAX");
979 } else if (d == INT64_MIN) {
980 av_log(av_log_obj, level, "I64_MIN");
981 } else if (d == FLT_MAX) {
982 av_log(av_log_obj, level, "FLT_MAX");
983 } else if (d == FLT_MIN) {
984 av_log(av_log_obj, level, "FLT_MIN");
985 } else if (d == -FLT_MAX) {
986 av_log(av_log_obj, level, "-FLT_MAX");
987 } else if (d == -FLT_MIN) {
988 av_log(av_log_obj, level, "-FLT_MIN");
989 } else if (d == DBL_MAX) {
990 av_log(av_log_obj, level, "DBL_MAX");
991 } else if (d == DBL_MIN) {
992 av_log(av_log_obj, level, "DBL_MIN");
993 } else if (d == -DBL_MAX) {
994 av_log(av_log_obj, level, "-DBL_MAX");
995 } else if (d == -DBL_MIN) {
996 av_log(av_log_obj, level, "-DBL_MIN");
997 } else {
998 av_log(av_log_obj, level, "%g", d);
999 }
1000}
1001
1002static void opt_list(void *obj, void *av_log_obj, const char *unit,
1003 int req_flags, int rej_flags)
1004{
1005 const AVOption *opt=NULL;
1006 AVOptionRanges *r;
1007 int i;
1008
1009 while ((opt = av_opt_next(obj, opt))) {
1010 if (!(opt->flags & req_flags) || (opt->flags & rej_flags))
1011 continue;
1012
1013 /* Don't print CONST's on level one.
1014 * Don't print anything but CONST's on level two.
1015 * Only print items from the requested unit.
1016 */
1017 if (!unit && opt->type==AV_OPT_TYPE_CONST)
1018 continue;
1019 else if (unit && opt->type!=AV_OPT_TYPE_CONST)
1020 continue;
1021 else if (unit && opt->type==AV_OPT_TYPE_CONST && strcmp(unit, opt->unit))
1022 continue;
1023 else if (unit && opt->type == AV_OPT_TYPE_CONST)
1024 av_log(av_log_obj, AV_LOG_INFO, " %-15s ", opt->name);
1025 else
1026 av_log(av_log_obj, AV_LOG_INFO, " %s%-17s ",
1027 (opt->flags & AV_OPT_FLAG_FILTERING_PARAM) ? "" : "-",
1028 opt->name);
1029
1030 switch (opt->type) {
1031 case AV_OPT_TYPE_FLAGS:
1032 av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<flags>");
1033 break;
1034 case AV_OPT_TYPE_INT:
1035 av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<int>");
1036 break;
1037 case AV_OPT_TYPE_INT64:
1038 av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<int64>");
1039 break;
1040 case AV_OPT_TYPE_DOUBLE:
1041 av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<double>");
1042 break;
1043 case AV_OPT_TYPE_FLOAT:
1044 av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<float>");
1045 break;
1046 case AV_OPT_TYPE_STRING:
1047 av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<string>");
1048 break;
1049 case AV_OPT_TYPE_RATIONAL:
1050 av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<rational>");
1051 break;
1052 case AV_OPT_TYPE_BINARY:
1053 av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<binary>");
1054 break;
1055 case AV_OPT_TYPE_IMAGE_SIZE:
1056 av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<image_size>");
1057 break;
1058 case AV_OPT_TYPE_VIDEO_RATE:
1059 av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<video_rate>");
1060 break;
1061 case AV_OPT_TYPE_PIXEL_FMT:
1062 av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<pix_fmt>");
1063 break;
1064 case AV_OPT_TYPE_SAMPLE_FMT:
1065 av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<sample_fmt>");
1066 break;
1067 case AV_OPT_TYPE_DURATION:
1068 av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<duration>");
1069 break;
1070 case AV_OPT_TYPE_COLOR:
1071 av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<color>");
1072 break;
1073 case AV_OPT_TYPE_CHANNEL_LAYOUT:
1074 av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<channel_layout>");
1075 break;
1076 case AV_OPT_TYPE_CONST:
1077 default:
1078 av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "");
1079 break;
1080 }
1081 av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_ENCODING_PARAM) ? 'E' : '.');
1082 av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_DECODING_PARAM) ? 'D' : '.');
1083 av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_FILTERING_PARAM)? 'F' : '.');
1084 av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_VIDEO_PARAM ) ? 'V' : '.');
1085 av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_AUDIO_PARAM ) ? 'A' : '.');
1086 av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_SUBTITLE_PARAM) ? 'S' : '.');
1087 av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_EXPORT) ? 'X' : '.');
1088 av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_READONLY) ? 'R' : '.');
1089
1090 if (opt->help)
1091 av_log(av_log_obj, AV_LOG_INFO, " %s", opt->help);
1092
1093 if (av_opt_query_ranges(&r, obj, opt->name, AV_OPT_SEARCH_FAKE_OBJ) >= 0) {
1094 switch (opt->type) {
1095 case AV_OPT_TYPE_INT:
1096 case AV_OPT_TYPE_INT64:
1097 case AV_OPT_TYPE_DOUBLE:
1098 case AV_OPT_TYPE_FLOAT:
1099 case AV_OPT_TYPE_RATIONAL:
1100 for (i = 0; i < r->nb_ranges; i++) {
1101 av_log(av_log_obj, AV_LOG_INFO, " (from ");
1102 log_value(av_log_obj, AV_LOG_INFO, r->range[i]->value_min);
1103 av_log(av_log_obj, AV_LOG_INFO, " to ");
1104 log_value(av_log_obj, AV_LOG_INFO, r->range[i]->value_max);
1105 av_log(av_log_obj, AV_LOG_INFO, ")");
1106 }
1107 break;
1108 }
1109 av_opt_freep_ranges(&r);
1110 }
1111
1112 if (opt->type != AV_OPT_TYPE_CONST &&
1113 opt->type != AV_OPT_TYPE_BINARY &&
1114 !((opt->type == AV_OPT_TYPE_COLOR ||
1115 opt->type == AV_OPT_TYPE_IMAGE_SIZE ||
1116 opt->type == AV_OPT_TYPE_STRING ||
1117 opt->type == AV_OPT_TYPE_VIDEO_RATE) &&
1118 !opt->default_val.str)) {
1119 av_log(av_log_obj, AV_LOG_INFO, " (default ");
1120 switch (opt->type) {
1121 case AV_OPT_TYPE_FLAGS:
1122 av_log(av_log_obj, AV_LOG_INFO, "%"PRIX64, opt->default_val.i64);
1123 break;
1124 case AV_OPT_TYPE_DURATION:
1125 case AV_OPT_TYPE_INT:
1126 case AV_OPT_TYPE_INT64:
1127 log_value(av_log_obj, AV_LOG_INFO, opt->default_val.i64);
1128 break;
1129 case AV_OPT_TYPE_DOUBLE:
1130 case AV_OPT_TYPE_FLOAT:
1131 log_value(av_log_obj, AV_LOG_INFO, opt->default_val.dbl);
1132 break;
1133 case AV_OPT_TYPE_RATIONAL: {
1134 AVRational q = av_d2q(opt->default_val.dbl, INT_MAX);
1135 av_log(av_log_obj, AV_LOG_INFO, "%d/%d", q.num, q.den); }
1136 break;
1137 case AV_OPT_TYPE_PIXEL_FMT:
1138 av_log(av_log_obj, AV_LOG_INFO, "%s", (char *)av_x_if_null(av_get_pix_fmt_name(opt->default_val.i64), "none"));
1139 break;
1140 case AV_OPT_TYPE_SAMPLE_FMT:
1141 av_log(av_log_obj, AV_LOG_INFO, "%s", (char *)av_x_if_null(av_get_sample_fmt_name(opt->default_val.i64), "none"));
1142 break;
1143 case AV_OPT_TYPE_COLOR:
1144 case AV_OPT_TYPE_IMAGE_SIZE:
1145 case AV_OPT_TYPE_STRING:
1146 case AV_OPT_TYPE_VIDEO_RATE:
1147 av_log(av_log_obj, AV_LOG_INFO, "\"%s\"", opt->default_val.str);
1148 break;
1149 case AV_OPT_TYPE_CHANNEL_LAYOUT:
1150 av_log(av_log_obj, AV_LOG_INFO, "0x%"PRIx64, opt->default_val.i64);
1151 break;
1152 }
1153 av_log(av_log_obj, AV_LOG_INFO, ")");
1154 }
1155
1156 av_log(av_log_obj, AV_LOG_INFO, "\n");
1157 if (opt->unit && opt->type != AV_OPT_TYPE_CONST) {
1158 opt_list(obj, av_log_obj, opt->unit, req_flags, rej_flags);
1159 }
1160 }
1161}
1162
1163int av_opt_show2(void *obj, void *av_log_obj, int req_flags, int rej_flags)
1164{
1165 if (!obj)
1166 return -1;
1167
1168 av_log(av_log_obj, AV_LOG_INFO, "%s AVOptions:\n", (*(AVClass**)obj)->class_name);
1169
1170 opt_list(obj, av_log_obj, NULL, req_flags, rej_flags);
1171
1172 return 0;
1173}
1174
1175void av_opt_set_defaults(void *s)
1176{
1177#if FF_API_OLD_AVOPTIONS
1178 av_opt_set_defaults2(s, 0, 0);
1179}
1180
1181void av_opt_set_defaults2(void *s, int mask, int flags)
1182{
1183#endif
1184 const AVOption *opt = NULL;
1185 while ((opt = av_opt_next(s, opt))) {
1186 void *dst = ((uint8_t*)s) + opt->offset;
1187#if FF_API_OLD_AVOPTIONS
1188 if ((opt->flags & mask) != flags)
1189 continue;
1190#endif
1191
1192 if (opt->flags & AV_OPT_FLAG_READONLY)
1193 continue;
1194
1195 switch (opt->type) {
1196 case AV_OPT_TYPE_CONST:
1197 /* Nothing to be done here */
1198 break;
1199 case AV_OPT_TYPE_FLAGS:
1200 case AV_OPT_TYPE_INT:
1201 case AV_OPT_TYPE_INT64:
1202 case AV_OPT_TYPE_DURATION:
1203 case AV_OPT_TYPE_CHANNEL_LAYOUT:
1204 write_number(s, opt, dst, 1, 1, opt->default_val.i64);
1205 break;
1206 case AV_OPT_TYPE_DOUBLE:
1207 case AV_OPT_TYPE_FLOAT: {
1208 double val;
1209 val = opt->default_val.dbl;
1210 write_number(s, opt, dst, val, 1, 1);
1211 }
1212 break;
1213 case AV_OPT_TYPE_RATIONAL: {
1214 AVRational val;
1215 val = av_d2q(opt->default_val.dbl, INT_MAX);
1216 write_number(s, opt, dst, 1, val.den, val.num);
1217 }
1218 break;
1219 case AV_OPT_TYPE_COLOR:
1220 set_string_color(s, opt, opt->default_val.str, dst);
1221 break;
1222 case AV_OPT_TYPE_STRING:
1223 set_string(s, opt, opt->default_val.str, dst);
1224 break;
1225 case AV_OPT_TYPE_IMAGE_SIZE:
1226 set_string_image_size(s, opt, opt->default_val.str, dst);
1227 break;
1228 case AV_OPT_TYPE_VIDEO_RATE:
1229 set_string_video_rate(s, opt, opt->default_val.str, dst);
1230 break;
1231 case AV_OPT_TYPE_PIXEL_FMT:
1232 write_number(s, opt, dst, 1, 1, opt->default_val.i64);
1233 break;
1234 case AV_OPT_TYPE_SAMPLE_FMT:
1235 write_number(s, opt, dst, 1, 1, opt->default_val.i64);
1236 break;
1237 case AV_OPT_TYPE_BINARY:
f6fa7814
DM		 1238 set_string_binary(s, opt, opt->default_val.str, dst);
1239 break;
2ba45a60
DM		 1240 case AV_OPT_TYPE_DICT:
1241 /* Cannot set defaults for these types */
1242 break;
1243 default:
1244 av_log(s, AV_LOG_DEBUG, "AVOption type %d of option %s not implemented yet\n", opt->type, opt->name);
1245 }
1246 }
1247}
1248
1249/**
1250 * Store the value in the field in ctx that is named like key.
1251 * ctx must be an AVClass context, storing is done using AVOptions.
1252 *
1253 * @param buf the string to parse, buf will be updated to point at the
1254 * separator just after the parsed key/value pair
1255 * @param key_val_sep a 0-terminated list of characters used to
1256 * separate key from value
1257 * @param pairs_sep a 0-terminated list of characters used to separate
1258 * two pairs from each other
1259 * @return 0 if the key/value pair has been successfully parsed and
1260 * set, or a negative value corresponding to an AVERROR code in case
1261 * of error:
1262 * AVERROR(EINVAL) if the key/value pair cannot be parsed,
1263 * the error code issued by av_opt_set() if the key/value pair
1264 * cannot be set
1265 */
1266static int parse_key_value_pair(void *ctx, const char **buf,
1267 const char *key_val_sep, const char *pairs_sep)
1268{
1269 char *key = av_get_token(buf, key_val_sep);
1270 char *val;
1271 int ret;
1272
1273 if (!key)
1274 return AVERROR(ENOMEM);
1275
1276 if (*key && strspn(*buf, key_val_sep)) {
1277 (*buf)++;
1278 val = av_get_token(buf, pairs_sep);
1279 if (!val) {
1280 av_freep(&key);
1281 return AVERROR(ENOMEM);
1282 }
1283 } else {
1284 av_log(ctx, AV_LOG_ERROR, "Missing key or no key/value separator found after key '%s'\n", key);
1285 av_free(key);
1286 return AVERROR(EINVAL);
1287 }
1288
1289 av_log(ctx, AV_LOG_DEBUG, "Setting entry with key '%s' to value '%s'\n", key, val);
1290
1291 ret = av_opt_set(ctx, key, val, AV_OPT_SEARCH_CHILDREN);
1292 if (ret == AVERROR_OPTION_NOT_FOUND)
1293 av_log(ctx, AV_LOG_ERROR, "Key '%s' not found.\n", key);
1294
1295 av_free(key);
1296 av_free(val);
1297 return ret;
1298}
1299
1300int av_set_options_string(void *ctx, const char *opts,
1301 const char *key_val_sep, const char *pairs_sep)
1302{
1303 int ret, count = 0;
1304
1305 if (!opts)
1306 return 0;
1307
1308 while (*opts) {
1309 if ((ret = parse_key_value_pair(ctx, &opts, key_val_sep, pairs_sep)) < 0)
1310 return ret;
1311 count++;
1312
1313 if (*opts)
1314 opts++;
1315 }
1316
1317 return count;
1318}
1319
1320#define WHITESPACES " \n\t"
1321
1322static int is_key_char(char c)
1323{
1324 return (unsigned)((c | 32) - 'a') < 26 ||
1325 (unsigned)(c - '0') < 10 ||
1326 c == '-' || c == '_' || c == '/' || c == '.';
1327}
1328
1329/**
1330 * Read a key from a string.
1331 *
1332 * The key consists of is_key_char characters and must be terminated by a
1333 * character from the delim string; spaces are ignored.
1334 *
1335 * @return 0 for success (even with ellipsis), <0 for failure
1336 */
1337static int get_key(const char **ropts, const char *delim, char **rkey)
1338{
1339 const char *opts = *ropts;
1340 const char *key_start, *key_end;
1341
1342 key_start = opts += strspn(opts, WHITESPACES);
1343 while (is_key_char(*opts))
1344 opts++;
1345 key_end = opts;
1346 opts += strspn(opts, WHITESPACES);
1347 if (!*opts || !strchr(delim, *opts))
1348 return AVERROR(EINVAL);
1349 opts++;
1350 if (!(*rkey = av_malloc(key_end - key_start + 1)))
1351 return AVERROR(ENOMEM);
1352 memcpy(*rkey, key_start, key_end - key_start);
1353 (*rkey)[key_end - key_start] = 0;
1354 *ropts = opts;
1355 return 0;
1356}
1357
1358int av_opt_get_key_value(const char **ropts,
1359 const char *key_val_sep, const char *pairs_sep,
1360 unsigned flags,
1361 char **rkey, char **rval)
1362{
1363 int ret;
1364 char *key = NULL, *val;
1365 const char *opts = *ropts;
1366
1367 if ((ret = get_key(&opts, key_val_sep, &key)) < 0 &&
1368 !(flags & AV_OPT_FLAG_IMPLICIT_KEY))
1369 return AVERROR(EINVAL);
1370 if (!(val = av_get_token(&opts, pairs_sep))) {
1371 av_free(key);
1372 return AVERROR(ENOMEM);
1373 }
1374 *ropts = opts;
1375 *rkey = key;
1376 *rval = val;
1377 return 0;
1378}
1379
1380int av_opt_set_from_string(void *ctx, const char *opts,
1381 const char *const *shorthand,
1382 const char *key_val_sep, const char *pairs_sep)
1383{
1384 int ret, count = 0;
1385 const char *dummy_shorthand = NULL;
1386 char *av_uninit(parsed_key), *av_uninit(value);
1387 const char *key;
1388
1389 if (!opts)
1390 return 0;
1391 if (!shorthand)
1392 shorthand = &dummy_shorthand;
1393
1394 while (*opts) {
1395 ret = av_opt_get_key_value(&opts, key_val_sep, pairs_sep,
1396 *shorthand ? AV_OPT_FLAG_IMPLICIT_KEY : 0,
1397 &parsed_key, &value);
1398 if (ret < 0) {
1399 if (ret == AVERROR(EINVAL))
1400 av_log(ctx, AV_LOG_ERROR, "No option name near '%s'\n", opts);
1401 else
1402 av_log(ctx, AV_LOG_ERROR, "Unable to parse '%s': %s\n", opts,
1403 av_err2str(ret));
1404 return ret;
1405 }
1406 if (*opts)
1407 opts++;
1408 if (parsed_key) {
1409 key = parsed_key;
1410 while (*shorthand) /* discard all remaining shorthand */
1411 shorthand++;
1412 } else {
1413 key = *(shorthand++);
1414 }
1415
1416 av_log(ctx, AV_LOG_DEBUG, "Setting '%s' to value '%s'\n", key, value);
1417 if ((ret = av_opt_set(ctx, key, value, 0)) < 0) {
1418 if (ret == AVERROR_OPTION_NOT_FOUND)
1419 av_log(ctx, AV_LOG_ERROR, "Option '%s' not found\n", key);
1420 av_free(value);
1421 av_free(parsed_key);
1422 return ret;
1423 }
1424
1425 av_free(value);
1426 av_free(parsed_key);
1427 count++;
1428 }
1429 return count;
1430}
1431
1432void av_opt_free(void *obj)
1433{
1434 const AVOption *o = NULL;
1435 while ((o = av_opt_next(obj, o))) {
1436 switch (o->type) {
1437 case AV_OPT_TYPE_STRING:
1438 case AV_OPT_TYPE_BINARY:
1439 av_freep((uint8_t *)obj + o->offset);
1440 break;
1441
1442 case AV_OPT_TYPE_DICT:
1443 av_dict_free((AVDictionary **)(((uint8_t *)obj) + o->offset));
1444 break;
1445
1446 default:
1447 break;
1448 }
1449 }
1450}
1451
1452int av_opt_set_dict2(void *obj, AVDictionary **options, int search_flags)
1453{
1454 AVDictionaryEntry *t = NULL;
1455 AVDictionary *tmp = NULL;
1456 int ret = 0;
1457
1458 if (!options)
1459 return 0;
1460
1461 while ((t = av_dict_get(*options, "", t, AV_DICT_IGNORE_SUFFIX))) {
1462 ret = av_opt_set(obj, t->key, t->value, search_flags);
1463 if (ret == AVERROR_OPTION_NOT_FOUND)
1464 av_dict_set(&tmp, t->key, t->value, 0);
1465 else if (ret < 0) {
1466 av_log(obj, AV_LOG_ERROR, "Error setting option %s to value %s.\n", t->key, t->value);
1467 break;
1468 }
1469 ret = 0;
1470 }
1471 av_dict_free(options);
1472 *options = tmp;
1473 return ret;
1474}
1475
1476int av_opt_set_dict(void *obj, AVDictionary **options)
1477{
1478 return av_opt_set_dict2(obj, options, 0);
1479}
1480
1481const AVOption *av_opt_find(void *obj, const char *name, const char *unit,
1482 int opt_flags, int search_flags)
1483{
1484 return av_opt_find2(obj, name, unit, opt_flags, search_flags, NULL);
1485}
1486
1487const AVOption *av_opt_find2(void *obj, const char *name, const char *unit,
1488 int opt_flags, int search_flags, void **target_obj)
1489{
1490 const AVClass *c;
1491 const AVOption *o = NULL;
1492
1493 if(!obj)
1494 return NULL;
1495
1496 c= *(AVClass**)obj;
1497
1498 if (!c)
1499 return NULL;
1500
1501 if (search_flags & AV_OPT_SEARCH_CHILDREN) {
1502 if (search_flags & AV_OPT_SEARCH_FAKE_OBJ) {
1503 const AVClass *child = NULL;
1504 while (child = av_opt_child_class_next(c, child))
1505 if (o = av_opt_find2(&child, name, unit, opt_flags, search_flags, NULL))
1506 return o;
1507 } else {
1508 void *child = NULL;
1509 while (child = av_opt_child_next(obj, child))
1510 if (o = av_opt_find2(child, name, unit, opt_flags, search_flags, target_obj))
1511 return o;
1512 }
1513 }
1514
1515 while (o = av_opt_next(obj, o)) {
1516 if (!strcmp(o->name, name) && (o->flags & opt_flags) == opt_flags &&
1517 ((!unit && o->type != AV_OPT_TYPE_CONST) ||
1518 (unit && o->type == AV_OPT_TYPE_CONST && o->unit && !strcmp(o->unit, unit)))) {
1519 if (target_obj) {
1520 if (!(search_flags & AV_OPT_SEARCH_FAKE_OBJ))
1521 *target_obj = obj;
1522 else
1523 *target_obj = NULL;
1524 }
1525 return o;
1526 }
1527 }
1528 return NULL;
1529}
1530
1531void *av_opt_child_next(void *obj, void *prev)
1532{
1533 const AVClass *c = *(AVClass**)obj;
1534 if (c->child_next)
1535 return c->child_next(obj, prev);
1536 return NULL;
1537}
1538
1539const AVClass *av_opt_child_class_next(const AVClass *parent, const AVClass *prev)
1540{
1541 if (parent->child_class_next)
1542 return parent->child_class_next(prev);
1543 return NULL;
1544}
1545
1546void *av_opt_ptr(const AVClass *class, void *obj, const char *name)
1547{
1548 const AVOption *opt= av_opt_find2(&class, name, NULL, 0, AV_OPT_SEARCH_FAKE_OBJ, NULL);
1549 if(!opt)
1550 return NULL;
1551 return (uint8_t*)obj + opt->offset;
1552}
1553
1554static int opt_size(enum AVOptionType type)
1555{
1556 switch(type) {
1557 case AV_OPT_TYPE_INT:
1558 case AV_OPT_TYPE_FLAGS: return sizeof(int);
1559 case AV_OPT_TYPE_DURATION:
1560 case AV_OPT_TYPE_CHANNEL_LAYOUT:
1561 case AV_OPT_TYPE_INT64: return sizeof(int64_t);
1562 case AV_OPT_TYPE_DOUBLE: return sizeof(double);
1563 case AV_OPT_TYPE_FLOAT: return sizeof(float);
1564 case AV_OPT_TYPE_STRING: return sizeof(uint8_t*);
1565 case AV_OPT_TYPE_VIDEO_RATE:
1566 case AV_OPT_TYPE_RATIONAL: return sizeof(AVRational);
1567 case AV_OPT_TYPE_BINARY: return sizeof(uint8_t*) + sizeof(int);
1568 case AV_OPT_TYPE_IMAGE_SIZE:return sizeof(int[2]);
1569 case AV_OPT_TYPE_PIXEL_FMT: return sizeof(enum AVPixelFormat);
1570 case AV_OPT_TYPE_SAMPLE_FMT:return sizeof(enum AVSampleFormat);
1571 case AV_OPT_TYPE_COLOR: return 4;
1572 }
1573 return 0;
1574}
1575
f6fa7814 1576int av_opt_copy(void *dst, FF_CONST_AVUTIL55 void *src)
2ba45a60
DM		 1577{
1578 const AVOption *o = NULL;
1579 const AVClass *c;
1580 int ret = 0;
1581
1582 if (!src)
1583 return 0;
1584
1585 c = *(AVClass**)src;
1586 if (*(AVClass**)dst && c != *(AVClass**)dst)
1587 return AVERROR(EINVAL);
1588
1589 while ((o = av_opt_next(src, o))) {
1590 void *field_dst = ((uint8_t*)dst) + o->offset;
1591 void *field_src = ((uint8_t*)src) + o->offset;
1592 uint8_t **field_dst8 = (uint8_t**)field_dst;
1593 uint8_t **field_src8 = (uint8_t**)field_src;
1594
1595 if (o->type == AV_OPT_TYPE_STRING) {
1596 if (*field_dst8 != *field_src8)
1597 av_freep(field_dst8);
1598 *field_dst8 = av_strdup(*field_src8);
1599 if (*field_src8 && !*field_dst8)
1600 ret = AVERROR(ENOMEM);
1601 } else if (o->type == AV_OPT_TYPE_BINARY) {
1602 int len = *(int*)(field_src8 + 1);
1603 if (*field_dst8 != *field_src8)
1604 av_freep(field_dst8);
1605 *field_dst8 = av_memdup(*field_src8, len);
1606 if (len && !*field_dst8) {
1607 ret = AVERROR(ENOMEM);
1608 len = 0;
1609 }
1610 *(int*)(field_dst8 + 1) = len;
1611 } else if (o->type == AV_OPT_TYPE_CONST) {
1612 // do nothing
f6fa7814
DM		 1613 } else if (o->type == AV_OPT_TYPE_DICT) {
1614 AVDictionary **sdict = (AVDictionary **) field_src;
1615 AVDictionary **ddict = (AVDictionary **) field_dst;
1616 if (*sdict != *ddict)
1617 av_dict_free(ddict);
1618 *ddict = NULL;
1619 av_dict_copy(ddict, *sdict, 0);
1620 if (av_dict_count(*sdict) != av_dict_count(*ddict))
1621 ret = AVERROR(ENOMEM);
2ba45a60
DM		 1622 } else {
1623 memcpy(field_dst, field_src, opt_size(o->type));
1624 }
1625 }
1626 return ret;
1627}
1628
1629int av_opt_query_ranges(AVOptionRanges **ranges_arg, void *obj, const char *key, int flags)
1630{
1631 int ret;
1632 const AVClass *c = *(AVClass**)obj;
1633 int (*callback)(AVOptionRanges **, void *obj, const char *key, int flags) = NULL;
1634
1635 if (c->version > (52 << 16 | 11 << 8))
1636 callback = c->query_ranges;
1637
1638 if (!callback)
1639 callback = av_opt_query_ranges_default;
1640
1641 ret = callback(ranges_arg, obj, key, flags);
1642 if (ret >= 0) {
1643 if (!(flags & AV_OPT_MULTI_COMPONENT_RANGE))
1644 ret = 1;
1645 (*ranges_arg)->nb_components = ret;
1646 }
1647 return ret;
1648}
1649
1650int av_opt_query_ranges_default(AVOptionRanges **ranges_arg, void *obj, const char *key, int flags)
1651{
1652 AVOptionRanges *ranges = av_mallocz(sizeof(*ranges));
1653 AVOptionRange **range_array = av_mallocz(sizeof(void*));
1654 AVOptionRange *range = av_mallocz(sizeof(*range));
1655 const AVOption *field = av_opt_find(obj, key, NULL, 0, flags);
1656 int ret;
1657
1658 *ranges_arg = NULL;
1659
1660 if (!ranges || !range || !range_array || !field) {
1661 ret = AVERROR(ENOMEM);
1662 goto fail;
1663 }
1664
1665 ranges->range = range_array;
1666 ranges->range[0] = range;
1667 ranges->nb_ranges = 1;
1668 ranges->nb_components = 1;
1669 range->is_range = 1;
1670 range->value_min = field->min;
1671 range->value_max = field->max;
1672
1673 switch (field->type) {
1674 case AV_OPT_TYPE_INT:
1675 case AV_OPT_TYPE_INT64:
1676 case AV_OPT_TYPE_PIXEL_FMT:
1677 case AV_OPT_TYPE_SAMPLE_FMT:
1678 case AV_OPT_TYPE_FLOAT:
1679 case AV_OPT_TYPE_DOUBLE:
1680 case AV_OPT_TYPE_DURATION:
1681 case AV_OPT_TYPE_COLOR:
1682 case AV_OPT_TYPE_CHANNEL_LAYOUT:
1683 break;
1684 case AV_OPT_TYPE_STRING:
1685 range->component_min = 0;
1686 range->component_max = 0x10FFFF; // max unicode value
1687 range->value_min = -1;
1688 range->value_max = INT_MAX;
1689 break;
1690 case AV_OPT_TYPE_RATIONAL:
1691 range->component_min = INT_MIN;
1692 range->component_max = INT_MAX;
1693 break;
1694 case AV_OPT_TYPE_IMAGE_SIZE:
1695 range->component_min = 0;
1696 range->component_max = INT_MAX/128/8;
1697 range->value_min = 0;
1698 range->value_max = INT_MAX/8;
1699 break;
1700 case AV_OPT_TYPE_VIDEO_RATE:
1701 range->component_min = 1;
1702 range->component_max = INT_MAX;
1703 range->value_min = 1;
1704 range->value_max = INT_MAX;
1705 break;
1706 default:
1707 ret = AVERROR(ENOSYS);
1708 goto fail;
1709 }
1710
1711 *ranges_arg = ranges;
1712 return 1;
1713fail:
1714 av_free(ranges);
1715 av_free(range);
1716 av_free(range_array);
1717 return ret;
1718}
1719
1720void av_opt_freep_ranges(AVOptionRanges **rangesp)
1721{
1722 int i;
1723 AVOptionRanges *ranges = *rangesp;
1724
1725 if (!ranges)
1726 return;
1727
1728 for (i = 0; i < ranges->nb_ranges * ranges->nb_components; i++) {
1729 AVOptionRange *range = ranges->range[i];
1730 if (range) {
1731 av_freep(&range->str);
1732 av_freep(&ranges->range[i]);
1733 }
1734 }
1735 av_freep(&ranges->range);
1736 av_freep(rangesp);
1737}
1738
f6fa7814
DM		 1739int av_opt_is_set_to_default(void *obj, const AVOption *o)
1740{
1741 int64_t i64;
1742 double d, d2;
1743 float f;
1744 AVRational q;
1745 int ret, w, h;
1746 char *str;
1747 void *dst;
1748
1749 if (!o || !obj)
1750 return AVERROR(EINVAL);
1751
1752 dst = ((uint8_t*)obj) + o->offset;
1753
1754 switch (o->type) {
1755 case AV_OPT_TYPE_CONST:
1756 return 1;
1757 case AV_OPT_TYPE_FLAGS:
1758 case AV_OPT_TYPE_PIXEL_FMT:
1759 case AV_OPT_TYPE_SAMPLE_FMT:
1760 case AV_OPT_TYPE_INT:
1761 case AV_OPT_TYPE_CHANNEL_LAYOUT:
1762 case AV_OPT_TYPE_DURATION:
1763 case AV_OPT_TYPE_INT64:
1764 read_number(o, dst, NULL, NULL, &i64);
1765 return o->default_val.i64 == i64;
1766 case AV_OPT_TYPE_STRING:
1767 str = *(char **)dst;
1768 if (str == o->default_val.str) //2 NULLs
1769 return 1;
1770 if (!str || !o->default_val.str) //1 NULL
1771 return 0;
1772 return !strcmp(str, o->default_val.str);
1773 case AV_OPT_TYPE_DOUBLE:
1774 read_number(o, dst, &d, NULL, NULL);
1775 return o->default_val.dbl == d;
1776 case AV_OPT_TYPE_FLOAT:
1777 read_number(o, dst, &d, NULL, NULL);
1778 f = o->default_val.dbl;
1779 d2 = f;
1780 return d2 == d;
1781 case AV_OPT_TYPE_RATIONAL:
1782 q = av_d2q(o->default_val.dbl, INT_MAX);
1783 return !av_cmp_q(*(AVRational*)dst, q);
1784 case AV_OPT_TYPE_BINARY: {
1785 struct {
1786 uint8_t *data;
1787 int size;
1788 } tmp = {0};
1789 int opt_size = *(int *)((void **)dst + 1);
1790 void *opt_ptr = *(void **)dst;
1791 if (!opt_ptr && (!o->default_val.str || !strlen(o->default_val.str)))
1792 return 1;
1793 if (opt_ptr && o->default_val.str && !strlen(o->default_val.str))
1794 return 0;
1795 if (opt_size != strlen(o->default_val.str) / 2)
1796 return 0;
1797 ret = set_string_binary(NULL, NULL, o->default_val.str, &tmp.data);
1798 if (!ret)
1799 ret = !memcmp(opt_ptr, tmp.data, tmp.size);
1800 av_free(tmp.data);
1801 return ret;
1802 }
1803 case AV_OPT_TYPE_DICT:
1804 /* Binary and dict have not default support yet. Any pointer is not default. */
1805 return !!(*(void **)dst);
1806 case AV_OPT_TYPE_IMAGE_SIZE:
1807 if (!o->default_val.str || !strcmp(o->default_val.str, "none"))
1808 w = h = 0;
1809 else if ((ret = av_parse_video_size(&w, &h, o->default_val.str)) < 0)
1810 return ret;
1811 return (w == *(int *)dst) && (h == *((int *)dst+1));
1812 case AV_OPT_TYPE_VIDEO_RATE:
1813 q = (AVRational){0, 0};
1814 if (o->default_val.str)
1815 av_parse_video_rate(&q, o->default_val.str);
1816 return !av_cmp_q(*(AVRational*)dst, q);
1817 case AV_OPT_TYPE_COLOR: {
1818 uint8_t color[4] = {0, 0, 0, 0};
1819 if (o->default_val.str)
1820 av_parse_color(color, o->default_val.str, -1, NULL);
1821 return !memcmp(color, dst, sizeof(color));
1822 }
1823 default:
1824 av_log(obj, AV_LOG_WARNING, "Not supported option type: %d, option name: %s\n", o->type, o->name);
1825 break;
1826 }
1827 return AVERROR_PATCHWELCOME;
1828}
1829
1830int av_opt_is_set_to_default_by_name(void *obj, const char *name, int search_flags)
1831{
1832 const AVOption *o;
1833 void *target;
1834 if (!obj)
1835 return AVERROR(EINVAL);
1836 o = av_opt_find2(obj, name, NULL, 0, search_flags, &target);
1837 if (!o)
1838 return AVERROR_OPTION_NOT_FOUND;
1839 return av_opt_is_set_to_default(target, o);
1840}
1841
1842int av_opt_serialize(void *obj, int opt_flags, int flags, char **buffer,
1843 const char key_val_sep, const char pairs_sep)
1844{
1845 const AVOption *o = NULL;
1846 uint8_t *buf;
1847 AVBPrint bprint;
1848 int ret, cnt = 0;
1849 const char special_chars[] = {pairs_sep, key_val_sep, '\0'};
1850
1851 if (pairs_sep == '\0' || key_val_sep == '\0' || pairs_sep == key_val_sep ||
1852 pairs_sep == '\\' || key_val_sep == '\\') {
1853 av_log(obj, AV_LOG_ERROR, "Invalid separator(s) found.");
1854 return AVERROR(EINVAL);
1855 }
1856
1857 if (!obj || !buffer)
1858 return AVERROR(EINVAL);
1859
1860 *buffer = NULL;
1861 av_bprint_init(&bprint, 64, AV_BPRINT_SIZE_UNLIMITED);
1862
1863 while (o = av_opt_next(obj, o)) {
1864 if (o->type == AV_OPT_TYPE_CONST)
1865 continue;
1866 if ((flags & AV_OPT_SERIALIZE_OPT_FLAGS_EXACT) && o->flags != opt_flags)
1867 continue;
1868 else if (((o->flags & opt_flags) != opt_flags))
1869 continue;
1870 if (flags & AV_OPT_SERIALIZE_SKIP_DEFAULTS && av_opt_is_set_to_default(obj, o) > 0)
1871 continue;
1872 if ((ret = av_opt_get(obj, o->name, 0, &buf)) < 0) {
1873 av_bprint_finalize(&bprint, NULL);
1874 return ret;
1875 }
1876 if (buf) {
1877 if (cnt++)
1878 av_bprint_append_data(&bprint, &pairs_sep, 1);
1879 av_bprint_escape(&bprint, o->name, special_chars, AV_ESCAPE_MODE_BACKSLASH, 0);
1880 av_bprint_append_data(&bprint, &key_val_sep, 1);
1881 av_bprint_escape(&bprint, buf, special_chars, AV_ESCAPE_MODE_BACKSLASH, 0);
1882 av_freep(&buf);
1883 }
1884 }
1885 av_bprint_finalize(&bprint, buffer);
1886 return 0;
1887}
1888
2ba45a60
DM		 1889#ifdef TEST
1890
1891typedef struct TestContext
1892{
1893 const AVClass *class;
1894 int num;
1895 int toggle;
1896 char *string;
1897 int flags;
1898 AVRational rational;
1899 AVRational video_rate;
1900 int w, h;
1901 enum AVPixelFormat pix_fmt;
1902 enum AVSampleFormat sample_fmt;
1903 int64_t duration;
1904 uint8_t color[4];
1905 int64_t channel_layout;
f6fa7814
DM		 1906 void *binary;
1907 int binary_size;
1908 void *binary1;
1909 int binary_size1;
1910 void *binary2;
1911 int binary_size2;
1912 int64_t num64;
1913 float flt;
1914 double dbl;
1915 char *escape;
2ba45a60
DM		 1916} TestContext;
1917
1918#define OFFSET(x) offsetof(TestContext, x)
1919
1920#define TEST_FLAG_COOL 01
1921#define TEST_FLAG_LAME 02
1922#define TEST_FLAG_MU 04
1923
1924static const AVOption test_options[]= {
1925{"num", "set num", OFFSET(num), AV_OPT_TYPE_INT, {.i64 = 0}, 0, 100 },
f6fa7814
DM		 1926{"toggle", "set toggle", OFFSET(toggle), AV_OPT_TYPE_INT, {.i64 = 1}, 0, 1 },
1927{"rational", "set rational", OFFSET(rational), AV_OPT_TYPE_RATIONAL, {.dbl = 1}, 0, 10 },
2ba45a60 1928{"string", "set string", OFFSET(string), AV_OPT_TYPE_STRING, {.str = "default"}, CHAR_MIN, CHAR_MAX },
f6fa7814
DM		 1929{"escape", "set escape str", OFFSET(escape), AV_OPT_TYPE_STRING, {.str = "\\=,"}, CHAR_MIN, CHAR_MAX },
1930{"flags", "set flags", OFFSET(flags), AV_OPT_TYPE_FLAGS, {.i64 = 1}, 0, INT_MAX, 0, "flags" },
2ba45a60
DM		 1931{"cool", "set cool flag ", 0, AV_OPT_TYPE_CONST, {.i64 = TEST_FLAG_COOL}, INT_MIN, INT_MAX, 0, "flags" },
1932{"lame", "set lame flag ", 0, AV_OPT_TYPE_CONST, {.i64 = TEST_FLAG_LAME}, INT_MIN, INT_MAX, 0, "flags" },
1933{"mu", "set mu flag ", 0, AV_OPT_TYPE_CONST, {.i64 = TEST_FLAG_MU}, INT_MIN, INT_MAX, 0, "flags" },
f6fa7814
DM		 1934{"size", "set size", OFFSET(w), AV_OPT_TYPE_IMAGE_SIZE,{.str="200x300"}, 0, 0 },
1935{"pix_fmt", "set pixfmt", OFFSET(pix_fmt), AV_OPT_TYPE_PIXEL_FMT, {.i64 = AV_PIX_FMT_0BGR}, -1, INT_MAX},
1936{"sample_fmt", "set samplefmt", OFFSET(sample_fmt), AV_OPT_TYPE_SAMPLE_FMT, {.i64 = AV_SAMPLE_FMT_S16}, -1, INT_MAX},
2ba45a60 1937{"video_rate", "set videorate", OFFSET(video_rate), AV_OPT_TYPE_VIDEO_RATE, {.str = "25"}, 0, 0 },
f6fa7814 1938{"duration", "set duration", OFFSET(duration), AV_OPT_TYPE_DURATION, {.i64 = 1000}, 0, INT64_MAX},
2ba45a60
DM		 1939{"color", "set color", OFFSET(color), AV_OPT_TYPE_COLOR, {.str = "pink"}, 0, 0},
1940{"cl", "set channel layout", OFFSET(channel_layout), AV_OPT_TYPE_CHANNEL_LAYOUT, {.i64 = AV_CH_LAYOUT_HEXAGONAL}, 0, INT64_MAX},
f6fa7814
DM		 1941{"bin", "set binary value", OFFSET(binary), AV_OPT_TYPE_BINARY, {.str="62696e00"}, 0, 0 },
1942{"bin1", "set binary value", OFFSET(binary1), AV_OPT_TYPE_BINARY, {.str=NULL}, 0, 0 },
1943{"bin2", "set binary value", OFFSET(binary2), AV_OPT_TYPE_BINARY, {.str=""}, 0, 0 },
1944{"num64", "set num 64bit", OFFSET(num64), AV_OPT_TYPE_INT64, {.i64 = 1}, 0, 100 },
1945{"flt", "set float", OFFSET(flt), AV_OPT_TYPE_FLOAT, {.dbl = 1.0/3}, 0, 100 },
1946{"dbl", "set double", OFFSET(dbl), AV_OPT_TYPE_DOUBLE, {.dbl = 1.0/3}, 0, 100 },
2ba45a60
DM		 1947{NULL},
1948};
1949
1950static const char *test_get_name(void *ctx)
1951{
1952 return "test";
1953}
1954
1955static const AVClass test_class = {
1956 "TestContext",
1957 test_get_name,
1958 test_options
1959};
1960
1961int main(void)
1962{
1963 int i;
1964
f6fa7814
DM		 1965 printf("Testing default values\n");
1966 {
1967 TestContext test_ctx = { 0 };
1968 test_ctx.class = &test_class;
1969 av_opt_set_defaults(&test_ctx);
1970
1971 printf("num=%d\n", test_ctx.num);
1972 printf("toggle=%d\n", test_ctx.toggle);
1973 printf("string=%s\n", test_ctx.string);
1974 printf("escape=%s\n", test_ctx.escape);
1975 printf("flags=%d\n", test_ctx.flags);
1976 printf("rational=%d/%d\n", test_ctx.rational.num, test_ctx.rational.den);
1977 printf("video_rate=%d/%d\n", test_ctx.video_rate.num, test_ctx.video_rate.den);
1978 printf("width=%d height=%d\n", test_ctx.w, test_ctx.h);
1979 printf("pix_fmt=%s\n", av_get_pix_fmt_name(test_ctx.pix_fmt));
1980 printf("sample_fmt=%s\n", av_get_sample_fmt_name(test_ctx.sample_fmt));
1981 printf("duration=%"PRId64"\n", test_ctx.duration);
1982 printf("color=%d %d %d %d\n", test_ctx.color[0], test_ctx.color[1], test_ctx.color[2], test_ctx.color[3]);
1983 printf("channel_layout=%"PRId64"=%"PRId64"\n", test_ctx.channel_layout, (int64_t)AV_CH_LAYOUT_HEXAGONAL);
1984 if (test_ctx.binary)
1985 printf("binary=%x %x %x %x\n", ((uint8_t*)test_ctx.binary)[0], ((uint8_t*)test_ctx.binary)[1], ((uint8_t*)test_ctx.binary)[2], ((uint8_t*)test_ctx.binary)[3]);
1986 printf("binary_size=%d\n", test_ctx.binary_size);
1987 printf("num64=%"PRId64"\n", test_ctx.num64);
1988 printf("flt=%.6f\n", test_ctx.flt);
1989 printf("dbl=%.6f\n", test_ctx.dbl);
1990 av_opt_free(&test_ctx);
1991 }
1992
1993 printf("\nTesting av_opt_is_set_to_default()\n");
1994 {
1995 int ret;
1996 TestContext test_ctx = { 0 };
1997 const AVOption *o = NULL;
1998 test_ctx.class = &test_class;
1999
2000 av_log_set_level(AV_LOG_QUIET);
2001
2002 while (o = av_opt_next(&test_ctx, o)) {
2003 ret = av_opt_is_set_to_default_by_name(&test_ctx, o->name, 0);
2004 printf("name:%10s default:%d error:%s\n", o->name, !!ret, ret < 0 ? av_err2str(ret) : "");
2005 }
2006 av_opt_set_defaults(&test_ctx);
2007 while (o = av_opt_next(&test_ctx, o)) {
2008 ret = av_opt_is_set_to_default_by_name(&test_ctx, o->name, 0);
2009 printf("name:%10s default:%d error:%s\n", o->name, !!ret, ret < 0 ? av_err2str(ret) : "");
2010 }
2011 av_opt_free(&test_ctx);
2012 }
2013
2014 printf("\nTest av_opt_serialize()\n");
2015 {
2016 TestContext test_ctx = { 0 };
2017 char *buf;
2018 test_ctx.class = &test_class;
2019
2020 av_log_set_level(AV_LOG_QUIET);
2021
2022 av_opt_set_defaults(&test_ctx);
2023 if (av_opt_serialize(&test_ctx, 0, 0, &buf, '=', ',') >= 0) {
2024 printf("%s\n", buf);
2025 av_opt_free(&test_ctx);
2026 memset(&test_ctx, 0, sizeof(test_ctx));
2027 test_ctx.class = &test_class;
2028 av_set_options_string(&test_ctx, buf, "=", ",");
2029 av_free(buf);
2030 if (av_opt_serialize(&test_ctx, 0, 0, &buf, '=', ',') >= 0) {
2031 printf("%s\n", buf);
2032 av_free(buf);
2033 }
2034 }
2035 av_opt_free(&test_ctx);
2036 }
2037
2ba45a60
DM		 2038 printf("\nTesting av_set_options_string()\n");
2039 {
2040 TestContext test_ctx = { 0 };
2041 static const char * const options[] = {
2042 "",
2043 ":",
2044 "=",
2045 "foo=:",
2046 ":=foo",
2047 "=foo",
2048 "foo=",
2049 "foo",
2050 "foo=val",
2051 "foo==val",
2052 "toggle=:",
2053 "string=:",
2054 "toggle=1 : foo",
2055 "toggle=100",
2056 "toggle==1",
2057 "flags=+mu-lame : num=42: toggle=0",
2058 "num=42 : string=blahblah",
2059 "rational=0 : rational=1/2 : rational=1/-1",
2060 "rational=-1/0",
2061 "size=1024x768",
2062 "size=pal",
2063 "size=bogus",
2064 "pix_fmt=yuv420p",
2065 "pix_fmt=2",
2066 "pix_fmt=bogus",
2067 "sample_fmt=s16",
2068 "sample_fmt=2",
2069 "sample_fmt=bogus",
2070 "video_rate=pal",
2071 "video_rate=25",
2072 "video_rate=30000/1001",
2073 "video_rate=30/1.001",
2074 "video_rate=bogus",
2075 "duration=bogus",
2076 "duration=123.45",
2077 "duration=1\\:23\\:45.67",
2078 "color=blue",
2079 "color=0x223300",
2080 "color=0x42FF07AA",
2081 "cl=stereo+downmix",
2082 "cl=foo",
f6fa7814
DM		 2083 "bin=boguss",
2084 "bin=111",
2085 "bin=ffff",
2086 "num64=bogus",
2087 "num64=44",
2088 "num64=44.4",
2089 "num64=-1",
2090 "num64=101",
2091 "flt=bogus",
2092 "flt=2",
2093 "flt=2.2",
2094 "flt=-1",
2095 "flt=101",
2096 "dbl=bogus",
2097 "dbl=2",
2098 "dbl=2.2",
2099 "dbl=-1",
2100 "dbl=101",
2ba45a60
DM		 2101 };
2102
2103 test_ctx.class = &test_class;
2104 av_opt_set_defaults(&test_ctx);
2105
f6fa7814 2106 av_log_set_level(AV_LOG_QUIET);
2ba45a60
DM		 2107
2108 for (i=0; i < FF_ARRAY_ELEMS(options); i++) {
2109 av_log(&test_ctx, AV_LOG_DEBUG, "Setting options string '%s'\n", options[i]);
2110 if (av_set_options_string(&test_ctx, options[i], "=", ":") < 0)
f6fa7814
DM		 2111 printf("Error '%s'\n", options[i]);
2112 else
2113 printf("OK '%s'\n", options[i]);
2ba45a60
DM		 2114 }
2115 av_opt_free(&test_ctx);
2116 }
2117
2118 printf("\nTesting av_opt_set_from_string()\n");
2119 {
2120 TestContext test_ctx = { 0 };
2121 static const char * const options[] = {
2122 "",
2123 "5",
2124 "5:hello",
2125 "5:hello:size=pal",
2126 "5:size=pal:hello",
2127 ":",
2128 "=",
2129 " 5 : hello : size = pal ",
2130 "a_very_long_option_name_that_will_need_to_be_ellipsized_around_here=42"
2131 };
2132 static const char * const shorthand[] = { "num", "string", NULL };
2133
2134 test_ctx.class = &test_class;
2135 av_opt_set_defaults(&test_ctx);
2136
f6fa7814 2137 av_log_set_level(AV_LOG_QUIET);
2ba45a60
DM		 2138
2139 for (i=0; i < FF_ARRAY_ELEMS(options); i++) {
2140 av_log(&test_ctx, AV_LOG_DEBUG, "Setting options string '%s'\n", options[i]);
2141 if (av_opt_set_from_string(&test_ctx, options[i], shorthand, "=", ":") < 0)
f6fa7814
DM		 2142 printf("Error '%s'\n", options[i]);
2143 else
2144 printf("OK '%s'\n", options[i]);
2ba45a60
DM		 2145 }
2146 av_opt_free(&test_ctx);
2147 }
2148
2149 return 0;
2150}
2151
2152#endif
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