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FFmpeg/libavutil/opt.c

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  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 "common.h"

  31. #include "opt.h"

  32. #include "eval.h"

  33. #include "dict.h"

  34. #include "log.h"

  35. #include "parseutils.h"

  36. #include "pixdesc.h"

  37. #include "mathematics.h"

  38. 

  39. #if FF_API_FIND_OPT

  40. //FIXME order them and do a bin search

  41. const AVOption *av_find_opt(void *v, const char *name, const char *unit, int mask, int flags)

  42. {

  43.     const AVOption *o = NULL;

  44. 

  45.     while ((o = av_next_option(v, o))) {

  46.         if (!strcmp(o->name, name) && (!unit || (o->unit && !strcmp(o->unit, unit))) && (o->flags & mask) == flags)

  47.             return o;

  48.     }

  49.     return NULL;

  50. }

  51. #endif

  52. 

  53. #if FF_API_OLD_AVOPTIONS

  54. const AVOption *av_next_option(void *obj, const AVOption *last)

  55. {

  56.     return av_opt_next(obj, last);

  57. }

  58. #endif

  59. 

  60. const AVOption *av_opt_next(void *obj, const AVOption *last)

  61. {

  62.     AVClass *class = *(AVClass**)obj;

  63.     if (!last && class->option && class->option[0].name)

  64.         return class->option;

  65.     if (last && last[1].name)           return ++last;

  66.     return NULL;

  67. }

  68. 

  69. static int read_number(const AVOption *o, void *dst, double *num, int *den, int64_t *intnum)

  70. {

  71.     switch (o->type) {

  72.     case AV_OPT_TYPE_FLAGS:     *intnum = *(unsigned int*)dst;return 0;

  73.     case AV_OPT_TYPE_INT:       *intnum = *(int         *)dst;return 0;

  74.     case AV_OPT_TYPE_INT64:     *intnum = *(int64_t     *)dst;return 0;

  75.     case AV_OPT_TYPE_FLOAT:     *num    = *(float       *)dst;return 0;

  76.     case AV_OPT_TYPE_DOUBLE:    *num    = *(double      *)dst;return 0;

  77.     case AV_OPT_TYPE_RATIONAL:  *intnum = ((AVRational*)dst)->num;

  78.                                 *den    = ((AVRational*)dst)->den;

  79.                                                         return 0;

  80.     case AV_OPT_TYPE_CONST:     *num    = o->default_val.dbl; return 0;

  81.     }

  82.     return AVERROR(EINVAL);

  83. }

  84. 

  85. static int write_number(void *obj, const AVOption *o, void *dst, double num, int den, int64_t intnum)

  86. {

  87.     if (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\n",

  89.                num*intnum/den, o->name);

  90.         return AVERROR(ERANGE);

  91.     }

  92. 

  93.     switch (o->type) {

  94.     case AV_OPT_TYPE_FLAGS:

  95.     case AV_OPT_TYPE_INT:   *(int       *)dst= llrint(num/den)*intnum; break;

  96.     case AV_OPT_TYPE_INT64: *(int64_t   *)dst= llrint(num/den)*intnum; break;

  97.     case AV_OPT_TYPE_FLOAT: *(float     *)dst= num*intnum/den;         break;

  98.     case AV_OPT_TYPE_DOUBLE:*(double    *)dst= num*intnum/den;         break;

  99.     case AV_OPT_TYPE_RATIONAL:

  100.         if ((int)num == num) *(AVRational*)dst= (AVRational){num*intnum, den};

  101.         else                 *(AVRational*)dst= av_d2q(num*intnum/den, 1<<24);

  102.         break;

  103.     default:

  104.         return AVERROR(EINVAL);

  105.     }

  106.     return 0;

  107. }

  108. 

  109. static const double const_values[] = {

  110.     M_PI,

  111.     M_E,

  112.     FF_QP2LAMBDA,

  113.     0

  114. };

  115. 

  116. static const char * const const_names[] = {

  117.     "PI",

  118.     "E",

  119.     "QP2LAMBDA",

  120.     0

  121. };

  122. 

  123. static int hexchar2int(char c) {

  124.     if (c >= '0' && c <= '9') return c - '0';

  125.     if (c >= 'a' && c <= 'f') return c - 'a' + 10;

  126.     if (c >= 'A' && c <= 'F') return c - 'A' + 10;

  127.     return -1;

  128. }

  129. 

  130. static int set_string_binary(void *obj, const AVOption *o, const char *val, uint8_t **dst)

  131. {

  132.     int *lendst = (int *)(dst + 1);

  133.     uint8_t *bin, *ptr;

  134.     int len = strlen(val);

  135. 

  136.     av_freep(dst);

  137.     *lendst = 0;

  138. 

  139.     if (len & 1)

  140.         return AVERROR(EINVAL);

  141.     len /= 2;

  142. 

  143.     ptr = bin = av_malloc(len);

  144.     while (*val) {

  145.         int a = hexchar2int(*val++);

  146.         int b = hexchar2int(*val++);

  147.         if (a < 0 || b < 0) {

  148.             av_free(bin);

  149.             return AVERROR(EINVAL);

  150.         }

  151.         *ptr++ = (a << 4) | b;

  152.     }

  153.     *dst = bin;

  154.     *lendst = len;

  155. 

  156.     return 0;

  157. }

  158. 

  159. static int set_string(void *obj, const AVOption *o, const char *val, uint8_t **dst)

  160. {

  161.     av_freep(dst);

  162.     *dst = av_strdup(val);

  163.     return 0;

  164. }

  165. 

  166. #define DEFAULT_NUMVAL(opt) ((opt->type == AV_OPT_TYPE_INT64 || \

  167.                               opt->type == AV_OPT_TYPE_CONST || \

  168.                               opt->type == AV_OPT_TYPE_FLAGS || \

  169.                               opt->type == AV_OPT_TYPE_INT) ? \

  170.                              opt->default_val.i64 : opt->default_val.dbl)

  171. 

  172. static int set_string_number(void *obj, const AVOption *o, const char *val, void *dst)

  173. {

  174.     int ret = 0, notfirst = 0;

  175.     for (;;) {

  176.         int i, den = 1;

  177.         char buf[256];

  178.         int cmd = 0;

  179.         double d, num = 1;

  180.         int64_t intnum = 1;

  181. 

  182.         if (*val == '+' || *val == '-')

  183.             cmd = *(val++);

  184. 

  185.         for (i = 0; i < sizeof(buf) - 1 && val[i] && val[i] != '+' && val[i] != '-'; i++)

  186.             buf[i] = val[i];

  187.         buf[i] = 0;

  188. 

  189.         {

  190.             const AVOption *o_named = av_opt_find(obj, buf, o->unit, 0, 0);

  191.             if (o_named && o_named->type == AV_OPT_TYPE_CONST)

  192.                 d = DEFAULT_NUMVAL(o_named);

  193.             else if (!strcmp(buf, "default")) d = DEFAULT_NUMVAL(o);

  194.             else if (!strcmp(buf, "max"    )) d = o->max;

  195.             else if (!strcmp(buf, "min"    )) d = o->min;

  196.             else if (!strcmp(buf, "none"   )) d = 0;

  197.             else if (!strcmp(buf, "all"    )) d = ~0;

  198.             else {

  199.                 int res = av_expr_parse_and_eval(&d, buf, const_names, const_values, NULL, NULL, NULL, NULL, NULL, 0, obj);

  200.                 if (res < 0) {

  201.                     av_log(obj, AV_LOG_ERROR, "Unable to parse option value \"%s\"\n", val);

  202.                     return res;

  203.                 }

  204.             }

  205.         }

  206.         if (o->type == AV_OPT_TYPE_FLAGS) {

  207.             read_number(o, dst, NULL, NULL, &intnum);

  208.             if      (cmd == '+') d = intnum | (int64_t)d;

  209.             else if (cmd == '-') d = intnum &~(int64_t)d;

  210.         } else {

  211.             read_number(o, dst, &num, &den, &intnum);

  212.             if      (cmd == '+') d = notfirst*num*intnum/den + d;

  213.             else if (cmd == '-') d = notfirst*num*intnum/den - d;

  214.         }

  215. 

  216.         if ((ret = write_number(obj, o, dst, d, 1, 1)) < 0)

  217.             return ret;

  218.         val += i;

  219.         if (!*val)

  220.             return 0;

  221.         notfirst = 1;

  222.     }

  223. 

  224.     return 0;

  225. }

  226. 

  227. #if FF_API_OLD_AVOPTIONS

  228. int av_set_string3(void *obj, const char *name, const char *val, int alloc, const AVOption **o_out)

  229. {

  230.     const AVOption *o = av_opt_find(obj, name, NULL, 0, 0);

  231.     if (o_out)

  232.         *o_out = o;

  233.     return av_opt_set(obj, name, val, 0);

  234. }

  235. #endif

  236. 

  237. int av_opt_set(void *obj, const char *name, const char *val, int search_flags)

  238. {

  239.     int ret;

  240.     void *dst, *target_obj;

  241.     const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);

  242.     if (!o || !target_obj)

  243.         return AVERROR_OPTION_NOT_FOUND;

  244.     if (!val && (o->type != AV_OPT_TYPE_STRING && o->type != AV_OPT_TYPE_PIXEL_FMT && o->type != AV_OPT_TYPE_IMAGE_SIZE))

  245.         return AVERROR(EINVAL);

  246. 

  247.     dst = ((uint8_t*)target_obj) + o->offset;

  248.     switch (o->type) {

  249.     case AV_OPT_TYPE_STRING:   return set_string(obj, o, val, dst);

  250.     case AV_OPT_TYPE_BINARY:   return set_string_binary(obj, o, val, dst);

  251.     case AV_OPT_TYPE_FLAGS:

  252.     case AV_OPT_TYPE_INT:

  253.     case AV_OPT_TYPE_INT64:

  254.     case AV_OPT_TYPE_FLOAT:

  255.     case AV_OPT_TYPE_DOUBLE:

  256.     case AV_OPT_TYPE_RATIONAL: return set_string_number(obj, o, val, dst);

  257.     case AV_OPT_TYPE_IMAGE_SIZE:

  258.         if (!val || !strcmp(val, "none")) {

  259.             *(int *)dst = *((int *)dst + 1) = 0;

  260.             return 0;

  261.         }

  262.         ret = av_parse_video_size(dst, ((int *)dst) + 1, val);

  263.         if (ret < 0)

  264.             av_log(obj, AV_LOG_ERROR, "Unable to parse option value \"%s\" as image size\n", val);

  265.         return ret;

  266.     case AV_OPT_TYPE_PIXEL_FMT:

  267.         if (!val || !strcmp(val, "none"))

  268.             ret = AV_PIX_FMT_NONE;

  269.         else {

  270.             ret = av_get_pix_fmt(val);

  271.             if (ret == AV_PIX_FMT_NONE) {

  272.                 char *tail;

  273.                 ret = strtol(val, &tail, 0);

  274.                 if (*tail || (unsigned)ret >= AV_PIX_FMT_NB) {

  275.                     av_log(obj, AV_LOG_ERROR, "Unable to parse option value \"%s\" as pixel format\n", val);

  276.                     return AVERROR(EINVAL);

  277.                 }

  278.             }

  279.         }

  280.         *(enum AVPixelFormat *)dst = ret;

  281.         return 0;

  282.     }

  283. 

  284.     av_log(obj, AV_LOG_ERROR, "Invalid option type.\n");

  285.     return AVERROR(EINVAL);

  286. }

  287. 

  288. #define OPT_EVAL_NUMBER(name, opttype, vartype)\

  289.     int av_opt_eval_ ## name(void *obj, const AVOption *o, const char *val, vartype *name ## _out)\

  290.     {\

  291.         if (!o || o->type != opttype)\

  292.             return AVERROR(EINVAL);\

  293.         return set_string_number(obj, o, val, name ## _out);\

  294.     }

  295. 

  296. OPT_EVAL_NUMBER(flags,  AV_OPT_TYPE_FLAGS,    int)

  297. OPT_EVAL_NUMBER(int,    AV_OPT_TYPE_INT,      int)

  298. OPT_EVAL_NUMBER(int64,  AV_OPT_TYPE_INT64,    int64_t)

  299. OPT_EVAL_NUMBER(float,  AV_OPT_TYPE_FLOAT,    float)

  300. OPT_EVAL_NUMBER(double, AV_OPT_TYPE_DOUBLE,   double)

  301. OPT_EVAL_NUMBER(q,      AV_OPT_TYPE_RATIONAL, AVRational)

  302. 

  303. static int set_number(void *obj, const char *name, double num, int den, int64_t intnum,

  304.                                   int search_flags)

  305. {

  306.     void *dst, *target_obj;

  307.     const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);

  308. 

  309.     if (!o || !target_obj)

  310.         return AVERROR_OPTION_NOT_FOUND;

  311. 

  312.     dst = ((uint8_t*)target_obj) + o->offset;

  313.     return write_number(obj, o, dst, num, den, intnum);

  314. }

  315. 

  316. #if FF_API_OLD_AVOPTIONS

  317. const AVOption *av_set_double(void *obj, const char *name, double n)

  318. {

  319.     const AVOption *o = av_opt_find(obj, name, NULL, 0, 0);

  320.     if (set_number(obj, name, n, 1, 1, 0) < 0)

  321.         return NULL;

  322.     return o;

  323. }

  324. 

  325. const AVOption *av_set_q(void *obj, const char *name, AVRational n)

  326. {

  327.     const AVOption *o = av_opt_find(obj, name, NULL, 0, 0);

  328.     if (set_number(obj, name, n.num, n.den, 1, 0) < 0)

  329.         return NULL;

  330.     return o;

  331. }

  332. 

  333. const AVOption *av_set_int(void *obj, const char *name, int64_t n)

  334. {

  335.     const AVOption *o = av_opt_find(obj, name, NULL, 0, 0);

  336.     if (set_number(obj, name, 1, 1, n, 0) < 0)

  337.         return NULL;

  338.     return o;

  339. }

  340. #endif

  341. 

  342. int av_opt_set_int(void *obj, const char *name, int64_t val, int search_flags)

  343. {

  344.     return set_number(obj, name, 1, 1, val, search_flags);

  345. }

  346. 

  347. int av_opt_set_double(void *obj, const char *name, double val, int search_flags)

  348. {

  349.     return set_number(obj, name, val, 1, 1, search_flags);

  350. }

  351. 

  352. int av_opt_set_q(void *obj, const char *name, AVRational val, int search_flags)

  353. {

  354.     return set_number(obj, name, val.num, val.den, 1, search_flags);

  355. }

  356. 

  357. int av_opt_set_bin(void *obj, const char *name, const uint8_t *val, int len, int search_flags)

  358. {

  359.     void *target_obj;

  360.     const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);

  361.     uint8_t *ptr;

  362.     uint8_t **dst;

  363.     int *lendst;

  364. 

  365.     if (!o || !target_obj)

  366.         return AVERROR_OPTION_NOT_FOUND;

  367. 

  368.     if (o->type != AV_OPT_TYPE_BINARY)

  369.         return AVERROR(EINVAL);

  370. 

  371.     ptr = av_malloc(len);

  372.     if (!ptr)

  373.         return AVERROR(ENOMEM);

  374. 

  375.     dst = (uint8_t **)(((uint8_t *)target_obj) + o->offset);

  376.     lendst = (int *)(dst + 1);

  377. 

  378.     av_free(*dst);

  379.     *dst = ptr;

  380.     *lendst = len;

  381.     memcpy(ptr, val, len);

  382. 

  383.     return 0;

  384. }

  385. 

  386. #if FF_API_OLD_AVOPTIONS

  387. /**

  388.  *

  389.  * @param buf a buffer which is used for returning non string values as strings, can be NULL

  390.  * @param buf_len allocated length in bytes of buf

  391.  */

  392. const char *av_get_string(void *obj, const char *name, const AVOption **o_out, char *buf, int buf_len)

  393. {

  394.     const AVOption *o = av_opt_find(obj, name, NULL, 0, AV_OPT_SEARCH_CHILDREN);

  395.     void *dst;

  396.     uint8_t *bin;

  397.     int len, i;

  398.     if (!o)

  399.         return NULL;

  400.     if (o->type != AV_OPT_TYPE_STRING && (!buf || !buf_len))

  401.         return NULL;

  402. 

  403.     dst= ((uint8_t*)obj) + o->offset;

  404.     if (o_out) *o_out= o;

  405. 

  406.     switch (o->type) {

  407.     case AV_OPT_TYPE_FLAGS:     snprintf(buf, buf_len, "0x%08X",*(int    *)dst);break;

  408.     case AV_OPT_TYPE_INT:       snprintf(buf, buf_len, "%d" , *(int    *)dst);break;

  409.     case AV_OPT_TYPE_INT64:     snprintf(buf, buf_len, "%"PRId64, *(int64_t*)dst);break;

  410.     case AV_OPT_TYPE_FLOAT:     snprintf(buf, buf_len, "%f" , *(float  *)dst);break;

  411.     case AV_OPT_TYPE_DOUBLE:    snprintf(buf, buf_len, "%f" , *(double *)dst);break;

  412.     case AV_OPT_TYPE_RATIONAL:  snprintf(buf, buf_len, "%d/%d", ((AVRational*)dst)->num, ((AVRational*)dst)->den);break;

  413.     case AV_OPT_TYPE_CONST:     snprintf(buf, buf_len, "%f" , o->default_val.dbl);break;

  414.     case AV_OPT_TYPE_STRING:    return *(void**)dst;

  415.     case AV_OPT_TYPE_BINARY:

  416.         len = *(int*)(((uint8_t *)dst) + sizeof(uint8_t *));

  417.         if (len >= (buf_len + 1)/2) return NULL;

  418.         bin = *(uint8_t**)dst;

  419.         for (i = 0; i < len; i++) snprintf(buf + i*2, 3, "%02X", bin[i]);

  420.         break;

  421.     default: return NULL;

  422.     }

  423.     return buf;

  424. }

  425. #endif

  426. 

  427. int av_opt_get(void *obj, const char *name, int search_flags, uint8_t **out_val)

  428. {

  429.     void *dst, *target_obj;

  430.     const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);

  431.     uint8_t *bin, buf[128];

  432.     int len, i, ret;

  433. 

  434.     if (!o || !target_obj || (o->offset<=0 && o->type != AV_OPT_TYPE_CONST))

  435.         return AVERROR_OPTION_NOT_FOUND;

  436. 

  437.     dst = (uint8_t*)target_obj + o->offset;

  438. 

  439.     buf[0] = 0;

  440.     switch (o->type) {

  441.     case AV_OPT_TYPE_FLAGS:     ret = snprintf(buf, sizeof(buf), "0x%08X",  *(int    *)dst);break;

  442.     case AV_OPT_TYPE_INT:       ret = snprintf(buf, sizeof(buf), "%d" ,     *(int    *)dst);break;

  443.     case AV_OPT_TYPE_INT64:     ret = snprintf(buf, sizeof(buf), "%"PRId64, *(int64_t*)dst);break;

  444.     case AV_OPT_TYPE_FLOAT:     ret = snprintf(buf, sizeof(buf), "%f" ,     *(float  *)dst);break;

  445.     case AV_OPT_TYPE_DOUBLE:    ret = snprintf(buf, sizeof(buf), "%f" ,     *(double *)dst);break;

  446.     case AV_OPT_TYPE_RATIONAL:  ret = snprintf(buf, sizeof(buf), "%d/%d",   ((AVRational*)dst)->num, ((AVRational*)dst)->den);break;

  447.     case AV_OPT_TYPE_CONST:     ret = snprintf(buf, sizeof(buf), "%f" ,     o->default_val.dbl);break;

  448.     case AV_OPT_TYPE_STRING:

  449.         if (*(uint8_t**)dst)

  450.             *out_val = av_strdup(*(uint8_t**)dst);

  451.         else

  452.             *out_val = av_strdup("");

  453.         return 0;

  454.     case AV_OPT_TYPE_BINARY:

  455.         len = *(int*)(((uint8_t *)dst) + sizeof(uint8_t *));

  456.         if ((uint64_t)len*2 + 1 > INT_MAX)

  457.             return AVERROR(EINVAL);

  458.         if (!(*out_val = av_malloc(len*2 + 1)))

  459.             return AVERROR(ENOMEM);

  460.         bin = *(uint8_t**)dst;

  461.         for (i = 0; i < len; i++)

  462.             snprintf(*out_val + i*2, 3, "%02X", bin[i]);

  463.         return 0;

  464.     case AV_OPT_TYPE_IMAGE_SIZE:

  465.         ret = snprintf(buf, sizeof(buf), "%dx%d", ((int *)dst)[0], ((int *)dst)[1]);

  466.         break;

  467.     case AV_OPT_TYPE_PIXEL_FMT:

  468.         ret = snprintf(buf, sizeof(buf), "%s", (char *)av_x_if_null(av_get_pix_fmt_name(*(enum AVPixelFormat *)dst), "none"));

  469.         break;

  470.     default:

  471.         return AVERROR(EINVAL);

  472.     }

  473. 

  474.     if (ret >= sizeof(buf))

  475.         return AVERROR(EINVAL);

  476.     *out_val = av_strdup(buf);

  477.     return 0;

  478. }

  479. 

  480. static int get_number(void *obj, const char *name, const AVOption **o_out, double *num, int *den, int64_t *intnum,

  481.                       int search_flags)

  482. {

  483.     void *dst, *target_obj;

  484.     const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);

  485.     if (!o || !target_obj)

  486.         goto error;

  487. 

  488.     dst = ((uint8_t*)target_obj) + o->offset;

  489. 

  490.     if (o_out) *o_out= o;

  491. 

  492.     return read_number(o, dst, num, den, intnum);

  493. 

  494. error:

  495.     *den=*intnum=0;

  496.     return -1;

  497. }

  498. 

  499. #if FF_API_OLD_AVOPTIONS

  500. double av_get_double(void *obj, const char *name, const AVOption **o_out)

  501. {

  502.     int64_t intnum=1;

  503.     double num=1;

  504.     int den=1;

  505. 

  506.     if (get_number(obj, name, o_out, &num, &den, &intnum, 0) < 0)

  507.         return NAN;

  508.     return num*intnum/den;

  509. }

  510. 

  511. AVRational av_get_q(void *obj, const char *name, const AVOption **o_out)

  512. {

  513.     int64_t intnum=1;

  514.     double num=1;

  515.     int den=1;

  516. 

  517.     if (get_number(obj, name, o_out, &num, &den, &intnum, 0) < 0)

  518.         return (AVRational){0, 0};

  519.     if (num == 1.0 && (int)intnum == intnum)

  520.         return (AVRational){intnum, den};

  521.     else

  522.         return av_d2q(num*intnum/den, 1<<24);

  523. }

  524. 

  525. int64_t av_get_int(void *obj, const char *name, const AVOption **o_out)

  526. {

  527.     int64_t intnum=1;

  528.     double num=1;

  529.     int den=1;

  530. 

  531.     if (get_number(obj, name, o_out, &num, &den, &intnum, 0) < 0)

  532.         return -1;

  533.     return num*intnum/den;

  534. }

  535. #endif

  536. 

  537. int av_opt_get_int(void *obj, const char *name, int search_flags, int64_t *out_val)

  538. {

  539.     int64_t intnum = 1;

  540.     double     num = 1;

  541.     int   ret, den = 1;

  542. 

  543.     if ((ret = get_number(obj, name, NULL, &num, &den, &intnum, search_flags)) < 0)

  544.         return ret;

  545.     *out_val = num*intnum/den;

  546.     return 0;

  547. }

  548. 

  549. int av_opt_get_double(void *obj, const char *name, int search_flags, double *out_val)

  550. {

  551.     int64_t intnum = 1;

  552.     double     num = 1;

  553.     int   ret, den = 1;

  554. 

  555.     if ((ret = get_number(obj, name, NULL, &num, &den, &intnum, search_flags)) < 0)

  556.         return ret;

  557.     *out_val = num*intnum/den;

  558.     return 0;

  559. }

  560. 

  561. int av_opt_get_q(void *obj, const char *name, int search_flags, AVRational *out_val)

  562. {

  563.     int64_t intnum = 1;

  564.     double     num = 1;

  565.     int   ret, den = 1;

  566. 

  567.     if ((ret = get_number(obj, name, NULL, &num, &den, &intnum, search_flags)) < 0)

  568.         return ret;

  569. 

  570.     if (num == 1.0 && (int)intnum == intnum)

  571.         *out_val = (AVRational){intnum, den};

  572.     else

  573.         *out_val = av_d2q(num*intnum/den, 1<<24);

  574.     return 0;

  575. }

  576. 

  577. int av_opt_flag_is_set(void *obj, const char *field_name, const char *flag_name)

  578. {

  579.     const AVOption *field = av_opt_find(obj, field_name, NULL, 0, 0);

  580.     const AVOption *flag  = av_opt_find(obj, flag_name,

  581.                                         field ? field->unit : NULL, 0, 0);

  582.     int64_t res;

  583. 

  584.     if (!field || !flag || flag->type != AV_OPT_TYPE_CONST ||

  585.         av_opt_get_int(obj, field_name, 0, &res) < 0)

  586.         return 0;

  587.     return res & flag->default_val.i64;

  588. }

  589. 

  590. static void opt_list(void *obj, void *av_log_obj, const char *unit,

  591.                      int req_flags, int rej_flags)

  592. {

  593.     const AVOption *opt=NULL;

  594. 

  595.     while ((opt = av_opt_next(obj, opt))) {

  596.         if (!(opt->flags & req_flags) || (opt->flags & rej_flags))

  597.             continue;

  598. 

  599.         /* Don't print CONST's on level one.

  600.          * Don't print anything but CONST's on level two.

  601.          * Only print items from the requested unit.

  602.          */

  603.         if (!unit && opt->type==AV_OPT_TYPE_CONST)

  604.             continue;

  605.         else if (unit && opt->type!=AV_OPT_TYPE_CONST)

  606.             continue;

  607.         else if (unit && opt->type==AV_OPT_TYPE_CONST && strcmp(unit, opt->unit))

  608.             continue;

  609.         else if (unit && opt->type == AV_OPT_TYPE_CONST)

  610.             av_log(av_log_obj, AV_LOG_INFO, "   %-15s ", opt->name);

  611.         else

  612.             av_log(av_log_obj, AV_LOG_INFO, "-%-17s ", opt->name);

  613. 

  614.         switch (opt->type) {

  615.             case AV_OPT_TYPE_FLAGS:

  616.                 av_log(av_log_obj, AV_LOG_INFO, "%-7s ", "<flags>");

  617.                 break;

  618.             case AV_OPT_TYPE_INT:

  619.                 av_log(av_log_obj, AV_LOG_INFO, "%-7s ", "<int>");

  620.                 break;

  621.             case AV_OPT_TYPE_INT64:

  622.                 av_log(av_log_obj, AV_LOG_INFO, "%-7s ", "<int64>");

  623.                 break;

  624.             case AV_OPT_TYPE_DOUBLE:

  625.                 av_log(av_log_obj, AV_LOG_INFO, "%-7s ", "<double>");

  626.                 break;

  627.             case AV_OPT_TYPE_FLOAT:

  628.                 av_log(av_log_obj, AV_LOG_INFO, "%-7s ", "<float>");

  629.                 break;

  630.             case AV_OPT_TYPE_STRING:

  631.                 av_log(av_log_obj, AV_LOG_INFO, "%-7s ", "<string>");

  632.                 break;

  633.             case AV_OPT_TYPE_RATIONAL:

  634.                 av_log(av_log_obj, AV_LOG_INFO, "%-7s ", "<rational>");

  635.                 break;

  636.             case AV_OPT_TYPE_BINARY:

  637.                 av_log(av_log_obj, AV_LOG_INFO, "%-7s ", "<binary>");

  638.                 break;

  639.             case AV_OPT_TYPE_IMAGE_SIZE:

  640.                 av_log(av_log_obj, AV_LOG_INFO, "%-7s ", "<image_size>");

  641.                 break;

  642.             case AV_OPT_TYPE_PIXEL_FMT:

  643.                 av_log(av_log_obj, AV_LOG_INFO, "%-7s ", "<pix_fmt>");

  644.                 break;

  645.             case AV_OPT_TYPE_CONST:

  646.             default:

  647.                 av_log(av_log_obj, AV_LOG_INFO, "%-7s ", "");

  648.                 break;

  649.         }

  650.         av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_ENCODING_PARAM) ? 'E' : '.');

  651.         av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_DECODING_PARAM) ? 'D' : '.');

  652.         av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_FILTERING_PARAM)? 'F' : '.');

  653.         av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_VIDEO_PARAM   ) ? 'V' : '.');

  654.         av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_AUDIO_PARAM   ) ? 'A' : '.');

  655.         av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_SUBTITLE_PARAM) ? 'S' : '.');

  656. 

  657.         if (opt->help)

  658.             av_log(av_log_obj, AV_LOG_INFO, " %s", opt->help);

  659.         av_log(av_log_obj, AV_LOG_INFO, "\n");

  660.         if (opt->unit && opt->type != AV_OPT_TYPE_CONST) {

  661.             opt_list(obj, av_log_obj, opt->unit, req_flags, rej_flags);

  662.         }

  663.     }

  664. }

  665. 

  666. int av_opt_show2(void *obj, void *av_log_obj, int req_flags, int rej_flags)

  667. {

  668.     if (!obj)

  669.         return -1;

  670. 

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

  672. 

  673.     opt_list(obj, av_log_obj, NULL, req_flags, rej_flags);

  674. 

  675.     return 0;

  676. }

  677. 

  678. void av_opt_set_defaults(void *s)

  679. {

  680. #if FF_API_OLD_AVOPTIONS

  681.     av_opt_set_defaults2(s, 0, 0);

  682. }

  683. 

  684. void av_opt_set_defaults2(void *s, int mask, int flags)

  685. {

  686. #endif

  687.     const AVOption *opt = NULL;

  688.     while ((opt = av_opt_next(s, opt)) != NULL) {

  689. #if FF_API_OLD_AVOPTIONS

  690.         if ((opt->flags & mask) != flags)

  691.             continue;

  692. #endif

  693.         switch (opt->type) {

  694.             case AV_OPT_TYPE_CONST:

  695.                 /* Nothing to be done here */

  696.             break;

  697.             case AV_OPT_TYPE_FLAGS:

  698.             case AV_OPT_TYPE_INT:

  699.             case AV_OPT_TYPE_INT64:

  700.                 av_opt_set_int(s, opt->name, opt->default_val.i64, 0);

  701.             break;

  702.             case AV_OPT_TYPE_DOUBLE:

  703.             case AV_OPT_TYPE_FLOAT: {

  704.                 double val;

  705.                 val = opt->default_val.dbl;

  706.                 av_opt_set_double(s, opt->name, val, 0);

  707.             }

  708.             break;

  709.             case AV_OPT_TYPE_RATIONAL: {

  710.                 AVRational val;

  711.                 val = av_d2q(opt->default_val.dbl, INT_MAX);

  712.                 av_opt_set_q(s, opt->name, val, 0);

  713.             }

  714.             break;

  715.             case AV_OPT_TYPE_STRING:

  716.             case AV_OPT_TYPE_IMAGE_SIZE:

  717.             case AV_OPT_TYPE_PIXEL_FMT:

  718.                 av_opt_set(s, opt->name, opt->default_val.str, 0);

  719.                 break;

  720.             case AV_OPT_TYPE_BINARY:

  721.                 /* Cannot set default for binary */

  722.             break;

  723.             default:

  724.                 av_log(s, AV_LOG_DEBUG, "AVOption type %d of option %s not implemented yet\n", opt->type, opt->name);

  725.         }

  726.     }

  727. }

  728. 

  729. /**

  730.  * Store the value in the field in ctx that is named like key.

  731.  * ctx must be an AVClass context, storing is done using AVOptions.

  732.  *

  733.  * @param buf the string to parse, buf will be updated to point at the

  734.  * separator just after the parsed key/value pair

  735.  * @param key_val_sep a 0-terminated list of characters used to

  736.  * separate key from value

  737.  * @param pairs_sep a 0-terminated list of characters used to separate

  738.  * two pairs from each other

  739.  * @return 0 if the key/value pair has been successfully parsed and

  740.  * set, or a negative value corresponding to an AVERROR code in case

  741.  * of error:

  742.  * AVERROR(EINVAL) if the key/value pair cannot be parsed,

  743.  * the error code issued by av_opt_set() if the key/value pair

  744.  * cannot be set

  745.  */

  746. static int parse_key_value_pair(void *ctx, const char **buf,

  747.                                 const char *key_val_sep, const char *pairs_sep)

  748. {

  749.     char *key = av_get_token(buf, key_val_sep);

  750.     char *val;

  751.     int ret;

  752. 

  753.     if (*key && strspn(*buf, key_val_sep)) {

  754.         (*buf)++;

  755.         val = av_get_token(buf, pairs_sep);

  756.     } else {

  757.         av_log(ctx, AV_LOG_ERROR, "Missing key or no key/value separator found after key '%s'\n", key);

  758.         av_free(key);

  759.         return AVERROR(EINVAL);

  760.     }

  761. 

  762.     av_log(ctx, AV_LOG_DEBUG, "Setting entry with key '%s' to value '%s'\n", key, val);

  763. 

  764.     ret = av_opt_set(ctx, key, val, 0);

  765.     if (ret == AVERROR_OPTION_NOT_FOUND)

  766.         av_log(ctx, AV_LOG_ERROR, "Key '%s' not found.\n", key);

  767. 

  768.     av_free(key);

  769.     av_free(val);

  770.     return ret;

  771. }

  772. 

  773. int av_set_options_string(void *ctx, const char *opts,

  774.                           const char *key_val_sep, const char *pairs_sep)

  775. {

  776.     int ret, count = 0;

  777. 

  778.     if (!opts)

  779.         return 0;

  780. 

  781.     while (*opts) {

  782.         if ((ret = parse_key_value_pair(ctx, &opts, key_val_sep, pairs_sep)) < 0)

  783.             return ret;

  784.         count++;

  785. 

  786.         if (*opts)

  787.             opts++;

  788.     }

  789. 

  790.     return count;

  791. }

  792. 

  793. #define WHITESPACES " \n\t"

  794. 

  795. static int is_key_char(char c)

  796. {

  797.     return (unsigned)((c | 32) - 'a') < 26 ||

  798.            (unsigned)(c - '0') < 10 ||

  799.            c == '-' || c == '_' || c == '/' || c == '.';

  800. }

  801. 

  802. /**

  803.  * Read a key from a string.

  804.  *

  805.  * The key consists of is_key_char characters and must be terminated by a

  806.  * character from the delim string; spaces are ignored. The key buffer must

  807.  * be 4 bytes larger than the longest acceptable key. If the key is too

  808.  * long, an ellipsis will be written at the end.

  809.  *

  810.  * @return  0 for success (even with ellipsis), <0 for failure

  811.  */

  812. static int get_key(const char **ropts, const char *delim, char *key, unsigned key_size)

  813. {

  814.     unsigned key_pos = 0;

  815.     const char *opts = *ropts;

  816. 

  817.     opts += strspn(opts, WHITESPACES);

  818.     while (is_key_char(*opts)) {

  819.         key[key_pos++] = *opts;

  820.         if (key_pos == key_size)

  821.             key_pos--;

  822.         (opts)++;

  823.     }

  824.     opts += strspn(opts, WHITESPACES);

  825.     if (!*opts || !strchr(delim, *opts))

  826.         return AVERROR(EINVAL);

  827.     opts++;

  828.     key[key_pos++] = 0;

  829.     if (key_pos == key_size)

  830.         key[key_pos - 4] = key[key_pos - 3] = key[key_pos - 2] = '.';

  831.     *ropts = opts;

  832.     return 0;

  833. }

  834. 

  835. int av_opt_set_from_string(void *ctx, const char *opts,

  836.                            const char *const *shorthand,

  837.                            const char *key_val_sep, const char *pairs_sep)

  838. {

  839.     int ret, count = 0;

  840.     const char *dummy_shorthand = NULL;

  841.     char key_buf[68], *value;

  842.     const char *key;

  843. 

  844.     if (!opts)

  845.         return 0;

  846.     if (!shorthand)

  847.         shorthand = &dummy_shorthand;

  848. 

  849.     while (*opts) {

  850.         if ((ret = get_key(&opts, key_val_sep, key_buf, sizeof(key_buf))) < 0) {

  851.             if (*shorthand) {

  852.                 key = *(shorthand++);

  853.             } else {

  854.                 av_log(ctx, AV_LOG_ERROR, "No option name near '%s'\n", opts);

  855.                 return AVERROR(EINVAL);

  856.             }

  857.         } else {

  858.             key = key_buf;

  859.             while (*shorthand) /* discard all remaining shorthand */

  860.                 shorthand++;

  861.         }

  862. 

  863.         if (!(value = av_get_token(&opts, pairs_sep)))

  864.             return AVERROR(ENOMEM);

  865.         if (*opts && strchr(pairs_sep, *opts))

  866.             opts++;

  867. 

  868.         av_log(ctx, AV_LOG_DEBUG, "Setting '%s' to value '%s'\n", key, value);

  869.         if ((ret = av_opt_set(ctx, key, value, 0)) < 0) {

  870.             if (ret == AVERROR_OPTION_NOT_FOUND)

  871.                 av_log(ctx, AV_LOG_ERROR, "Option '%s' not found\n", key);

  872.             av_free(value);

  873.             return ret;

  874.         }

  875. 

  876.         av_free(value);

  877.         count++;

  878.     }

  879.     return count;

  880. }

  881. 

  882. void av_opt_free(void *obj)

  883. {

  884.     const AVOption *o = NULL;

  885.     while ((o = av_opt_next(obj, o)))

  886.         if (o->type == AV_OPT_TYPE_STRING || o->type == AV_OPT_TYPE_BINARY)

  887.             av_freep((uint8_t *)obj + o->offset);

  888. }

  889. 

  890. int av_opt_set_dict(void *obj, AVDictionary **options)

  891. {

  892.     AVDictionaryEntry *t = NULL;

  893.     AVDictionary    *tmp = NULL;

  894.     int ret = 0;

  895. 

  896.     while ((t = av_dict_get(*options, "", t, AV_DICT_IGNORE_SUFFIX))) {

  897.         ret = av_opt_set(obj, t->key, t->value, 0);

  898.         if (ret == AVERROR_OPTION_NOT_FOUND)

  899.             av_dict_set(&tmp, t->key, t->value, 0);

  900.         else if (ret < 0) {

  901.             av_log(obj, AV_LOG_ERROR, "Error setting option %s to value %s.\n", t->key, t->value);

  902.             break;

  903.         }

  904.         ret = 0;

  905.     }

  906.     av_dict_free(options);

  907.     *options = tmp;

  908.     return ret;

  909. }

  910. 

  911. const AVOption *av_opt_find(void *obj, const char *name, const char *unit,

  912.                             int opt_flags, int search_flags)

  913. {

  914.     return av_opt_find2(obj, name, unit, opt_flags, search_flags, NULL);

  915. }

  916. 

  917. const AVOption *av_opt_find2(void *obj, const char *name, const char *unit,

  918.                              int opt_flags, int search_flags, void **target_obj)

  919. {

  920.     const AVClass  *c;

  921.     const AVOption *o = NULL;

  922. 

  923.     if(!obj)

  924.         return NULL;

  925. 

  926.     c= *(AVClass**)obj;

  927. 

  928.     if (search_flags & AV_OPT_SEARCH_CHILDREN) {

  929.         if (search_flags & AV_OPT_SEARCH_FAKE_OBJ) {

  930.             const AVClass *child = NULL;

  931.             while (child = av_opt_child_class_next(c, child))

  932.                 if (o = av_opt_find2(&child, name, unit, opt_flags, search_flags, NULL))

  933.                     return o;

  934.         } else {

  935.             void *child = NULL;

  936.             while (child = av_opt_child_next(obj, child))

  937.                 if (o = av_opt_find2(child, name, unit, opt_flags, search_flags, target_obj))

  938.                     return o;

  939.         }

  940.     }

  941. 

  942.     while (o = av_opt_next(obj, o)) {

  943.         if (!strcmp(o->name, name) && (o->flags & opt_flags) == opt_flags &&

  944.             ((!unit && o->type != AV_OPT_TYPE_CONST) ||

  945.              (unit  && o->type == AV_OPT_TYPE_CONST && o->unit && !strcmp(o->unit, unit)))) {

  946.             if (target_obj) {

  947.                 if (!(search_flags & AV_OPT_SEARCH_FAKE_OBJ))

  948.                     *target_obj = obj;

  949.                 else

  950.                     *target_obj = NULL;

  951.             }

  952.             return o;

  953.         }

  954.     }

  955.     return NULL;

  956. }

  957. 

  958. void *av_opt_child_next(void *obj, void *prev)

  959. {

  960.     const AVClass *c = *(AVClass**)obj;

  961.     if (c->child_next)

  962.         return c->child_next(obj, prev);

  963.     return NULL;

  964. }

  965. 

  966. const AVClass *av_opt_child_class_next(const AVClass *parent, const AVClass *prev)

  967. {

  968.     if (parent->child_class_next)

  969.         return parent->child_class_next(prev);

  970.     return NULL;

  971. }

  972. 

  973. void *av_opt_ptr(const AVClass *class, void *obj, const char *name)

  974. {

  975.     const AVOption *opt= av_opt_find2(&class, name, NULL, 0, AV_OPT_SEARCH_FAKE_OBJ, NULL);

  976.     if(!opt)

  977.         return NULL;

  978.     return (uint8_t*)obj + opt->offset;

  979. }

  980. 

  981. #ifdef TEST

  982. 

  983. #undef printf

  984. 

  985. typedef struct TestContext

  986. {

  987.     const AVClass *class;

  988.     int num;

  989.     int toggle;

  990.     char *string;

  991.     int flags;

  992.     AVRational rational;

  993.     int w, h;

  994.     enum AVPixelFormat pix_fmt;

  995. } TestContext;

  996. 

  997. #define OFFSET(x) offsetof(TestContext, x)

  998. 

  999. #define TEST_FLAG_COOL 01

  1000. #define TEST_FLAG_LAME 02

  1001. #define TEST_FLAG_MU   04

  1002. 

  1003. static const AVOption test_options[]= {

  1004. {"num",      "set num",        OFFSET(num),      AV_OPT_TYPE_INT,      {.i64 = 0},       0,        100                 },

  1005. {"toggle",   "set toggle",     OFFSET(toggle),   AV_OPT_TYPE_INT,      {.i64 = 0},       0,        1                   },

  1006. {"rational", "set rational",   OFFSET(rational), AV_OPT_TYPE_RATIONAL, {.dbl = 0},  0,        10                  },

  1007. {"string",   "set string",     OFFSET(string),   AV_OPT_TYPE_STRING,   {0},              CHAR_MIN, CHAR_MAX            },

  1008. {"flags",    "set flags",      OFFSET(flags),    AV_OPT_TYPE_FLAGS,    {.i64 = 0},       0,        INT_MAX, 0, "flags" },

  1009. {"cool",     "set cool flag ", 0,                AV_OPT_TYPE_CONST,    {.i64 = TEST_FLAG_COOL}, INT_MIN,  INT_MAX, 0, "flags" },

  1010. {"lame",     "set lame flag ", 0,                AV_OPT_TYPE_CONST,    {.i64 = TEST_FLAG_LAME}, INT_MIN,  INT_MAX, 0, "flags" },

  1011. {"mu",       "set mu flag ",   0,                AV_OPT_TYPE_CONST,    {.i64 = TEST_FLAG_MU},   INT_MIN,  INT_MAX, 0, "flags" },

  1012. {"size",     "set size",       OFFSET(w),        AV_OPT_TYPE_IMAGE_SIZE,{0},             0,        0                   },

  1013. {"pix_fmt",  "set pixfmt",     OFFSET(pix_fmt),  AV_OPT_TYPE_PIXEL_FMT,{0},              0,        0                   },

  1014. {NULL},

  1015. };

  1016. 

  1017. static const char *test_get_name(void *ctx)

  1018. {

  1019.     return "test";

  1020. }

  1021. 

  1022. static const AVClass test_class = {

  1023.     "TestContext",

  1024.     test_get_name,

  1025.     test_options

  1026. };

  1027. 

  1028. int main(void)

  1029. {

  1030.     int i;

  1031. 

  1032.     printf("\nTesting av_set_options_string()\n");

  1033.     {

  1034.         TestContext test_ctx = { 0 };

  1035.         const char *options[] = {

  1036.             "",

  1037.             ":",

  1038.             "=",

  1039.             "foo=:",

  1040.             ":=foo",

  1041.             "=foo",

  1042.             "foo=",

  1043.             "foo",

  1044.             "foo=val",

  1045.             "foo==val",

  1046.             "toggle=:",

  1047.             "string=:",

  1048.             "toggle=1 : foo",

  1049.             "toggle=100",

  1050.             "toggle==1",

  1051.             "flags=+mu-lame : num=42: toggle=0",

  1052.             "num=42 : string=blahblah",

  1053.             "rational=0 : rational=1/2 : rational=1/-1",

  1054.             "rational=-1/0",

  1055.             "size=1024x768",

  1056.             "size=pal",

  1057.             "size=bogus",

  1058.             "pix_fmt=yuv420p",

  1059.             "pix_fmt=2",

  1060.             "pix_fmt=bogus",

  1061.         };

  1062. 

  1063.         test_ctx.class = &test_class;

  1064.         av_opt_set_defaults(&test_ctx);

  1065.         test_ctx.string = av_strdup("default");

  1066. 

  1067.         av_log_set_level(AV_LOG_DEBUG);

  1068. 

  1069.         for (i=0; i < FF_ARRAY_ELEMS(options); i++) {

  1070.             av_log(&test_ctx, AV_LOG_DEBUG, "Setting options string '%s'\n", options[i]);

  1071.             if (av_set_options_string(&test_ctx, options[i], "=", ":") < 0)

  1072.                 av_log(&test_ctx, AV_LOG_ERROR, "Error setting options string: '%s'\n", options[i]);

  1073.             printf("\n");

  1074.         }

  1075.         av_freep(&test_ctx.string);

  1076.     }

  1077. 

  1078.     printf("\nTesting av_opt_set_from_string()\n");

  1079.     {

  1080.         TestContext test_ctx = { 0 };

  1081.         const char *options[] = {

  1082.             "",

  1083.             "5",

  1084.             "5:hello",

  1085.             "5:hello:size=pal",

  1086.             "5:size=pal:hello",

  1087.             ":",

  1088.             "=",

  1089.             " 5 : hello : size = pal ",

  1090.             "a_very_long_option_name_that_will_need_to_be_ellipsized_around_here=42"

  1091.         };

  1092.         const char *shorthand[] = { "num", "string", NULL };

  1093. 

  1094.         test_ctx.class = &test_class;

  1095.         av_opt_set_defaults(&test_ctx);

  1096.         test_ctx.string = av_strdup("default");

  1097. 

  1098.         av_log_set_level(AV_LOG_DEBUG);

  1099. 

  1100.         for (i=0; i < FF_ARRAY_ELEMS(options); i++) {

  1101.             av_log(&test_ctx, AV_LOG_DEBUG, "Setting options string '%s'\n", options[i]);

  1102.             if (av_opt_set_from_string(&test_ctx, options[i], shorthand, "=", ":") < 0)

  1103.                 av_log(&test_ctx, AV_LOG_ERROR, "Error setting options string: '%s'\n", options[i]);

  1104.             printf("\n");

  1105.         }

  1106.         av_freep(&test_ctx.string);

  1107.     }

  1108. 

  1109.     return 0;

  1110. }

  1111. 

  1112. #endif