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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 "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"

  40. 

  41. #include <float.h>

  42. 

  43. #if FF_API_FIND_OPT

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

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

  46. {

  47.     const AVOption *o = NULL;

  48. 

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

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

  51.             return o;

  52.     }

  53.     return NULL;

  54. }

  55. #endif

  56. 

  57. #if FF_API_OLD_AVOPTIONS

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

  59. {

  60.     return av_opt_next(obj, last);

  61. }

  62. #endif

  63. 

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

  65. {

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

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

  68.         return class->option;

  69.     if (last && last[1].name)

  70.         return ++last;

  71.     return NULL;

  72. }

  73. 

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

  75. {

  76.     switch (o->type) {

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

  78.     case AV_OPT_TYPE_PIXEL_FMT:

  79.     case AV_OPT_TYPE_SAMPLE_FMT:

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

  81.     case AV_OPT_TYPE_CHANNEL_LAYOUT:

  82.     case AV_OPT_TYPE_DURATION:

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

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

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

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

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

  88.                                                         return 0;

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

  90.     }

  91.     return AVERROR(EINVAL);

  92. }

  93. 

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

  95. {

  96.     if (o->type != AV_OPT_TYPE_FLAGS &&

  97.         (o->max * den < num * intnum || o->min * den > num * intnum)) {

  98.         av_log(obj, AV_LOG_ERROR, "Value %f for parameter '%s' out of range [%g - %g]\n",

  99.                num*intnum/den, o->name, o->min, o->max);

  100.         return AVERROR(ERANGE);

  101.     }

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

  103.         double d = num*intnum/den;

  104.         if (d < -1.5 || d > 0xFFFFFFFF+0.5 || (llrint(d*256) & 255)) {

  105.             av_log(obj, AV_LOG_ERROR,

  106.                    "Value %f for parameter '%s' is not a valid set of 32bit integer flags\n",

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

  108.             return AVERROR(ERANGE);

  109.         }

  110.     }

  111. 

  112.     switch (o->type) {

  113.     case AV_OPT_TYPE_FLAGS:

  114.     case AV_OPT_TYPE_PIXEL_FMT:

  115.     case AV_OPT_TYPE_SAMPLE_FMT:

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

  117.     case AV_OPT_TYPE_DURATION:

  118.     case AV_OPT_TYPE_CHANNEL_LAYOUT:

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

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

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

  122.     case AV_OPT_TYPE_RATIONAL:

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

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

  125.         break;

  126.     default:

  127.         return AVERROR(EINVAL);

  128.     }

  129.     return 0;

  130. }

  131. 

  132. static const double const_values[] = {

  133.     M_PI,

  134.     M_E,

  135.     FF_QP2LAMBDA,

  136.     0

  137. };

  138. 

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

  140.     "PI",

  141.     "E",

  142.     "QP2LAMBDA",

  143.     0

  144. };

  145. 

  146. static int hexchar2int(char c) {

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

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

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

  150.     return -1;

  151. }

  152. 

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

  154. {

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

  156.     uint8_t *bin, *ptr;

  157.     int len = strlen(val);

  158. 

  159.     av_freep(dst);

  160.     *lendst = 0;

  161. 

  162.     if (len & 1)

  163.         return AVERROR(EINVAL);

  164.     len /= 2;

  165. 

  166.     ptr = bin = av_malloc(len);

  167.     while (*val) {

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

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

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

  171.             av_free(bin);

  172.             return AVERROR(EINVAL);

  173.         }

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

  175.     }

  176.     *dst = bin;

  177.     *lendst = len;

  178. 

  179.     return 0;

  180. }

  181. 

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

  183. {

  184.     av_freep(dst);

  185.     *dst = av_strdup(val);

  186.     return 0;

  187. }

  188. 

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

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

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

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

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

  194. 

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

  196. {

  197.     int ret = 0, notfirst = 0;

  198.     for (;;) {

  199.         int i, den = 1;

  200.         char buf[256];

  201.         int cmd = 0;

  202.         double d, num = 1;

  203.         int64_t intnum = 1;

  204. 

  205.         i = 0;

  206.         if (*val == '+' || *val == '-') {

  207.             if (o->type == AV_OPT_TYPE_FLAGS)

  208.                 cmd = *(val++);

  209.             else if (!notfirst)

  210.                 buf[i++] = *val;

  211.         }

  212. 

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

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

  215.         buf[i] = 0;

  216. 

  217.         {

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

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

  220.                 d = DEFAULT_NUMVAL(o_named);

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

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

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

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

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

  226.             else {

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

  228.                 if (res < 0) {

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

  230.                     return res;

  231.                 }

  232.             }

  233.         }

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

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

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

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

  238.         } else {

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

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

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

  242.         }

  243. 

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

  245.             return ret;

  246.         val += i;

  247.         if (!*val)

  248.             return 0;

  249.         notfirst = 1;

  250.     }

  251. 

  252.     return 0;

  253. }

  254. 

  255. #if FF_API_OLD_AVOPTIONS

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

  257. {

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

  259.     if (o_out)

  260.         *o_out = o;

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

  262. }

  263. #endif

  264. 

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

  266. {

  267.     int ret = 0;

  268.     void *dst, *target_obj;

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

  270.     if (!o || !target_obj)

  271.         return AVERROR_OPTION_NOT_FOUND;

  272.     if (!val && (o->type != AV_OPT_TYPE_STRING &&

  273.                  o->type != AV_OPT_TYPE_PIXEL_FMT && o->type != AV_OPT_TYPE_SAMPLE_FMT &&

  274.                  o->type != AV_OPT_TYPE_IMAGE_SIZE && o->type != AV_OPT_TYPE_VIDEO_RATE &&

  275.                  o->type != AV_OPT_TYPE_DURATION && o->type != AV_OPT_TYPE_COLOR &&

  276.                  o->type != AV_OPT_TYPE_CHANNEL_LAYOUT))

  277.         return AVERROR(EINVAL);

  278. 

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

  280.     switch (o->type) {

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

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

  283.     case AV_OPT_TYPE_FLAGS:

  284.     case AV_OPT_TYPE_INT:

  285.     case AV_OPT_TYPE_INT64:

  286.     case AV_OPT_TYPE_FLOAT:

  287.     case AV_OPT_TYPE_DOUBLE:

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

  289.     case AV_OPT_TYPE_IMAGE_SIZE:

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

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

  292.             return 0;

  293.         }

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

  295.         if (ret < 0)

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

  297.         return ret;

  298.     case AV_OPT_TYPE_VIDEO_RATE:

  299.         if (!val) {

  300.             ret = AVERROR(EINVAL);

  301.         } else {

  302.             ret = av_parse_video_rate(dst, val);

  303.         }

  304.         if (ret < 0)

  305.             av_log(obj, AV_LOG_ERROR, "Unable to parse option value \"%s\" as video rate\n", val);

  306.         return ret;

  307.     case AV_OPT_TYPE_PIXEL_FMT:

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

  309.             ret = AV_PIX_FMT_NONE;

  310.         } else {

  311.             ret = av_get_pix_fmt(val);

  312.             if (ret == AV_PIX_FMT_NONE) {

  313.                 char *tail;

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

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

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

  317.                     return AVERROR(EINVAL);

  318.                 }

  319.             }

  320.         }

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

  322.         return 0;

  323.     case AV_OPT_TYPE_SAMPLE_FMT:

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

  325.             ret = AV_SAMPLE_FMT_NONE;

  326.         } else {

  327.             ret = av_get_sample_fmt(val);

  328.             if (ret == AV_SAMPLE_FMT_NONE) {

  329.                 char *tail;

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

  331.                 if (*tail || (unsigned)ret >= AV_SAMPLE_FMT_NB) {

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

  333.                     return AVERROR(EINVAL);

  334.                 }

  335.             }

  336.         }

  337.         *(enum AVSampleFormat *)dst = ret;

  338.         return 0;

  339.     case AV_OPT_TYPE_DURATION:

  340.         if (!val) {

  341.             *(int64_t *)dst = 0;

  342.             return 0;

  343.         } else {

  344.             if ((ret = av_parse_time(dst, val, 1)) < 0)

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

  346.             return ret;

  347.         }

  348.         break;

  349.     case AV_OPT_TYPE_COLOR:

  350.         if (!val) {

  351.             return 0;

  352.         } else {

  353.             ret = av_parse_color(dst, val, -1, obj);

  354.             if (ret < 0)

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

  356.             return ret;

  357.         }

  358.         break;

  359.     case AV_OPT_TYPE_CHANNEL_LAYOUT:

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

  361.             *(int64_t *)dst = 0;

  362.         } else {

  363. #if FF_API_GET_CHANNEL_LAYOUT_COMPAT

  364.             int64_t cl = ff_get_channel_layout(val, 0);

  365. #else

  366.             int64_t cl = av_get_channel_layout(val);

  367. #endif

  368.             if (!cl) {

  369.                 av_log(obj, AV_LOG_ERROR, "Unable to parse option value \"%s\" as channel layout\n", val);

  370.                 ret = AVERROR(EINVAL);

  371.             }

  372.             *(int64_t *)dst = cl;

  373.             return ret;

  374.         }

  375.         break;

  376.     }

  377. 

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

  379.     return AVERROR(EINVAL);

  380. }

  381. 

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

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

  384.     {\

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

  386.             return AVERROR(EINVAL);\

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

  388.     }

  389. 

  390. OPT_EVAL_NUMBER(flags,  AV_OPT_TYPE_FLAGS,    int)

  391. OPT_EVAL_NUMBER(int,    AV_OPT_TYPE_INT,      int)

  392. OPT_EVAL_NUMBER(int64,  AV_OPT_TYPE_INT64,    int64_t)

  393. OPT_EVAL_NUMBER(float,  AV_OPT_TYPE_FLOAT,    float)

  394. OPT_EVAL_NUMBER(double, AV_OPT_TYPE_DOUBLE,   double)

  395. OPT_EVAL_NUMBER(q,      AV_OPT_TYPE_RATIONAL, AVRational)

  396. 

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

  398.                                   int search_flags)

  399. {

  400.     void *dst, *target_obj;

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

  402. 

  403.     if (!o || !target_obj)

  404.         return AVERROR_OPTION_NOT_FOUND;

  405. 

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

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

  408. }

  409. 

  410. #if FF_API_OLD_AVOPTIONS

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

  412. {

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

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

  415.         return NULL;

  416.     return o;

  417. }

  418. 

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

  420. {

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

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

  423.         return NULL;

  424.     return o;

  425. }

  426. 

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

  428. {

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

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

  431.         return NULL;

  432.     return o;

  433. }

  434. #endif

  435. 

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

  437. {

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

  439. }

  440. 

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

  442. {

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

  444. }

  445. 

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

  447. {

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

  449. }

  450. 

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

  452. {

  453.     void *target_obj;

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

  455.     uint8_t *ptr;

  456.     uint8_t **dst;

  457.     int *lendst;

  458. 

  459.     if (!o || !target_obj)

  460.         return AVERROR_OPTION_NOT_FOUND;

  461. 

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

  463.         return AVERROR(EINVAL);

  464. 

  465.     ptr = len ? av_malloc(len) : NULL;

  466.     if (len && !ptr)

  467.         return AVERROR(ENOMEM);

  468. 

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

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

  471. 

  472.     av_free(*dst);

  473.     *dst = ptr;

  474.     *lendst = len;

  475.     if (len)

  476.         memcpy(ptr, val, len);

  477. 

  478.     return 0;

  479. }

  480. 

  481. int av_opt_set_image_size(void *obj, const char *name, int w, int h, int search_flags)

  482. {

  483.     void *target_obj;

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

  485. 

  486.     if (!o || !target_obj)

  487.         return AVERROR_OPTION_NOT_FOUND;

  488.     if (o->type != AV_OPT_TYPE_IMAGE_SIZE) {

  489.         av_log(obj, AV_LOG_ERROR,

  490.                "The value set by option '%s' is not an image size.\n", o->name);

  491.         return AVERROR(EINVAL);

  492.     }

  493.     if (w<0 || h<0) {

  494.         av_log(obj, AV_LOG_ERROR,

  495.                "Invalid negative size value %dx%d for size '%s'\n", w, h, o->name);

  496.         return AVERROR(EINVAL);

  497.     }

  498.     *(int *)(((uint8_t *)target_obj)             + o->offset) = w;

  499.     *(int *)(((uint8_t *)target_obj+sizeof(int)) + o->offset) = h;

  500.     return 0;

  501. }

  502. 

  503. int av_opt_set_video_rate(void *obj, const char *name, AVRational val, int search_flags)

  504. {

  505.     void *target_obj;

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

  507. 

  508.     if (!o || !target_obj)

  509.         return AVERROR_OPTION_NOT_FOUND;

  510.     if (o->type != AV_OPT_TYPE_VIDEO_RATE) {

  511.         av_log(obj, AV_LOG_ERROR,

  512.                "The value set by option '%s' is not a video rate.\n", o->name);

  513.         return AVERROR(EINVAL);

  514.     }

  515.     if (val.num <= 0 || val.den <= 0)

  516.         return AVERROR(EINVAL);

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

  518. }

  519. 

  520. static int set_format(void *obj, const char *name, int fmt, int search_flags,

  521.                       enum AVOptionType type, const char *desc, int nb_fmts)

  522. {

  523.     void *target_obj;

  524.     const AVOption *o = av_opt_find2(obj, name, NULL, 0,

  525.                                      search_flags, &target_obj);

  526.     int min, max;

  527.     const AVClass *class = *(AVClass **)obj;

  528. 

  529.     if (!o || !target_obj)

  530.         return AVERROR_OPTION_NOT_FOUND;

  531.     if (o->type != type) {

  532.         av_log(obj, AV_LOG_ERROR,

  533.                "The value set by option '%s' is not a %s format", name, desc);

  534.         return AVERROR(EINVAL);

  535.     }

  536. 

  537. #if LIBAVUTIL_VERSION_MAJOR < 53

  538.     if (class->version && class->version < AV_VERSION_INT(52, 11, 100)) {

  539.         min = -1;

  540.         max = nb_fmts-1;

  541.     } else

  542. #endif

  543.     {

  544.         min = FFMIN(o->min, -1);

  545.         max = FFMAX(o->max, nb_fmts-1);

  546.     }

  547.     if (fmt < min || fmt > max) {

  548.         av_log(obj, AV_LOG_ERROR,

  549.                "Value %d for parameter '%s' out of %s format range [%d - %d]\n",

  550.                fmt, name, desc, min, max);

  551.         return AVERROR(ERANGE);

  552.     }

  553.     *(int *)(((uint8_t *)target_obj) + o->offset) = fmt;

  554.     return 0;

  555. }

  556. 

  557. int av_opt_set_pixel_fmt(void *obj, const char *name, enum AVPixelFormat fmt, int search_flags)

  558. {

  559.     return set_format(obj, name, fmt, search_flags, AV_OPT_TYPE_PIXEL_FMT, "pixel", AV_PIX_FMT_NB);

  560. }

  561. 

  562. int av_opt_set_sample_fmt(void *obj, const char *name, enum AVSampleFormat fmt, int search_flags)

  563. {

  564.     return set_format(obj, name, fmt, search_flags, AV_OPT_TYPE_SAMPLE_FMT, "sample", AV_SAMPLE_FMT_NB);

  565. }

  566. 

  567. int av_opt_set_channel_layout(void *obj, const char *name, int64_t cl, int search_flags)

  568. {

  569.     void *target_obj;

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

  571. 

  572.     if (!o || !target_obj)

  573.         return AVERROR_OPTION_NOT_FOUND;

  574.     if (o->type != AV_OPT_TYPE_CHANNEL_LAYOUT) {

  575.         av_log(obj, AV_LOG_ERROR,

  576.                "The value set by option '%s' is not a channel layout.\n", o->name);

  577.         return AVERROR(EINVAL);

  578.     }

  579.     *(int *)(((int64_t *)target_obj) + o->offset) = cl;

  580.     return 0;

  581. }

  582. 

  583. #if FF_API_OLD_AVOPTIONS

  584. /**

  585.  *

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

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

  588.  */

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

  590. {

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

  592.     void *dst;

  593.     uint8_t *bin;

  594.     int len, i;

  595.     if (!o)

  596.         return NULL;

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

  598.         return NULL;

  599. 

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

  601.     if (o_out) *o_out= o;

  602. 

  603.     switch (o->type) {

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

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

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

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

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

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

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

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

  612.     case AV_OPT_TYPE_BINARY:

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

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

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

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

  617.         break;

  618.     default: return NULL;

  619.     }

  620.     return buf;

  621. }

  622. #endif

  623. 

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

  625. {

  626.     void *dst, *target_obj;

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

  628.     uint8_t *bin, buf[128];

  629.     int len, i, ret;

  630.     int64_t i64;

  631. 

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

  633.         return AVERROR_OPTION_NOT_FOUND;

  634. 

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

  636. 

  637.     buf[0] = 0;

  638.     switch (o->type) {

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

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

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

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

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

  644.     case AV_OPT_TYPE_VIDEO_RATE:

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

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

  647.     case AV_OPT_TYPE_STRING:

  648.         if (*(uint8_t**)dst)

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

  650.         else

  651.             *out_val = av_strdup("");

  652.         return 0;

  653.     case AV_OPT_TYPE_BINARY:

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

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

  656.             return AVERROR(EINVAL);

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

  658.             return AVERROR(ENOMEM);

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

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

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

  662.         return 0;

  663.     case AV_OPT_TYPE_IMAGE_SIZE:

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

  665.         break;

  666.     case AV_OPT_TYPE_PIXEL_FMT:

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

  668.         break;

  669.     case AV_OPT_TYPE_SAMPLE_FMT:

  670.         ret = snprintf(buf, sizeof(buf), "%s", (char *)av_x_if_null(av_get_sample_fmt_name(*(enum AVSampleFormat *)dst), "none"));

  671.         break;

  672.     case AV_OPT_TYPE_DURATION:

  673.         i64 = *(int64_t *)dst;

  674.         ret = snprintf(buf, sizeof(buf), "%"PRIi64"d:%02d:%02d.%06d",

  675.                        i64 / 3600000000, (int)((i64 / 60000000) % 60),

  676.                        (int)((i64 / 1000000) % 60), (int)(i64 % 1000000));

  677.         break;

  678.     case AV_OPT_TYPE_COLOR:

  679.         ret = snprintf(buf, sizeof(buf), "0x%02x%02x%02x%02x", ((int *)dst)[0], ((int *)dst)[1], ((int *)dst)[2], ((int *)dst)[3]);

  680.         break;

  681.     case AV_OPT_TYPE_CHANNEL_LAYOUT:

  682.         i64 = *(int64_t *)dst;

  683.         ret = snprintf(buf, sizeof(buf), "0x%"PRIx64, i64);

  684.         break;

  685.     default:

  686.         return AVERROR(EINVAL);

  687.     }

  688. 

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

  690.         return AVERROR(EINVAL);

  691.     *out_val = av_strdup(buf);

  692.     return 0;

  693. }

  694. 

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

  696.                       int search_flags)

  697. {

  698.     void *dst, *target_obj;

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

  700.     if (!o || !target_obj)

  701.         goto error;

  702. 

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

  704. 

  705.     if (o_out) *o_out= o;

  706. 

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

  708. 

  709. error:

  710.     *den=*intnum=0;

  711.     return -1;

  712. }

  713. 

  714. #if FF_API_OLD_AVOPTIONS

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

  716. {

  717.     int64_t intnum=1;

  718.     double num=1;

  719.     int den=1;

  720. 

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

  722.         return NAN;

  723.     return num*intnum/den;

  724. }

  725. 

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

  727. {

  728.     int64_t intnum=1;

  729.     double num=1;

  730.     int den=1;

  731. 

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

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

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

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

  736.     else

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

  738. }

  739. 

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

  741. {

  742.     int64_t intnum=1;

  743.     double num=1;

  744.     int den=1;

  745. 

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

  747.         return -1;

  748.     return num*intnum/den;

  749. }

  750. #endif

  751. 

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

  753. {

  754.     int64_t intnum = 1;

  755.     double     num = 1;

  756.     int   ret, den = 1;

  757. 

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

  759.         return ret;

  760.     *out_val = num*intnum/den;

  761.     return 0;

  762. }

  763. 

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

  765. {

  766.     int64_t intnum = 1;

  767.     double     num = 1;

  768.     int   ret, den = 1;

  769. 

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

  771.         return ret;

  772.     *out_val = num*intnum/den;

  773.     return 0;

  774. }

  775. 

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

  777. {

  778.     int64_t intnum = 1;

  779.     double     num = 1;

  780.     int   ret, den = 1;

  781. 

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

  783.         return ret;

  784. 

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

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

  787.     else

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

  789.     return 0;

  790. }

  791. 

  792. int av_opt_get_image_size(void *obj, const char *name, int search_flags, int *w_out, int *h_out)

  793. {

  794.     void *dst, *target_obj;

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

  796.     if (!o || !target_obj)

  797.         return AVERROR_OPTION_NOT_FOUND;

  798.     if (o->type != AV_OPT_TYPE_IMAGE_SIZE) {

  799.         av_log(obj, AV_LOG_ERROR,

  800.                "The value for option '%s' is not an image size.\n", name);

  801.         return AVERROR(EINVAL);

  802.     }

  803. 

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

  805.     if (w_out) *w_out = *(int *)dst;

  806.     if (h_out) *h_out = *((int *)dst+1);

  807.     return 0;

  808. }

  809. 

  810. int av_opt_get_video_rate(void *obj, const char *name, int search_flags, AVRational *out_val)

  811. {

  812.     int64_t intnum = 1;

  813.     double     num = 1;

  814.     int   ret, den = 1;

  815. 

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

  817.         return ret;

  818. 

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

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

  821.     else

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

  823.     return 0;

  824. }

  825. 

  826. static int get_format(void *obj, const char *name, int search_flags, int *out_fmt,

  827.                       enum AVOptionType type, const char *desc)

  828. {

  829.     void *dst, *target_obj;

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

  831.     if (!o || !target_obj)

  832.         return AVERROR_OPTION_NOT_FOUND;

  833.     if (o->type != type) {

  834.         av_log(obj, AV_LOG_ERROR,

  835.                "The value for option '%s' is not a %s format.\n", desc, name);

  836.         return AVERROR(EINVAL);

  837.     }

  838. 

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

  840.     *out_fmt = *(int *)dst;

  841.     return 0;

  842. }

  843. 

  844. int av_opt_get_pixel_fmt(void *obj, const char *name, int search_flags, enum AVPixelFormat *out_fmt)

  845. {

  846.     return get_format(obj, name, search_flags, out_fmt, AV_OPT_TYPE_PIXEL_FMT, "pixel");

  847. }

  848. 

  849. int av_opt_get_sample_fmt(void *obj, const char *name, int search_flags, enum AVSampleFormat *out_fmt)

  850. {

  851.     return get_format(obj, name, search_flags, out_fmt, AV_OPT_TYPE_SAMPLE_FMT, "sample");

  852. }

  853. 

  854. int av_opt_get_channel_layout(void *obj, const char *name, int search_flags, int64_t *cl)

  855. {

  856.     void *dst, *target_obj;

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

  858.     if (!o || !target_obj)

  859.         return AVERROR_OPTION_NOT_FOUND;

  860.     if (o->type != AV_OPT_TYPE_CHANNEL_LAYOUT) {

  861.         av_log(obj, AV_LOG_ERROR,

  862.                "The value for option '%s' is not a channel layout.\n", name);

  863.         return AVERROR(EINVAL);

  864.     }

  865. 

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

  867.     *cl = *(int64_t *)dst;

  868.     return 0;

  869. }

  870. 

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

  872. {

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

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

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

  876.     int64_t res;

  877. 

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

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

  880.         return 0;

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

  882. }

  883. 

  884. static void log_value(void *av_log_obj, int level, double d)

  885. {

  886.     if      (d == INT_MAX) {

  887.         av_log(av_log_obj, level, "INT_MAX");

  888.     } else if (d == INT_MIN) {

  889.         av_log(av_log_obj, level, "INT_MIN");

  890.     } else if (d == (double)INT64_MAX) {

  891.         av_log(av_log_obj, level, "I64_MAX");

  892.     } else if (d == INT64_MIN) {

  893.         av_log(av_log_obj, level, "I64_MIN");

  894.     } else if (d == FLT_MAX) {

  895.         av_log(av_log_obj, level, "FLT_MAX");

  896.     } else if (d == FLT_MIN) {

  897.         av_log(av_log_obj, level, "FLT_MIN");

  898.     } else {

  899.         av_log(av_log_obj, level, "%g", d);

  900.     }

  901. }

  902. 

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

  904.                      int req_flags, int rej_flags)

  905. {

  906.     const AVOption *opt=NULL;

  907.     AVOptionRanges *r;

  908.     int i;

  909. 

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

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

  912.             continue;

  913. 

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

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

  916.          * Only print items from the requested unit.

  917.          */

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

  919.             continue;

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

  921.             continue;

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

  923.             continue;

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

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

  926.         else

  927.             av_log(av_log_obj, AV_LOG_INFO, "  %s%-17s ",

  928.                    (opt->flags & AV_OPT_FLAG_FILTERING_PARAM) ? "" : "-",

  929.                    opt->name);

  930. 

  931.         switch (opt->type) {

  932.             case AV_OPT_TYPE_FLAGS:

  933.                 av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<flags>");

  934.                 break;

  935.             case AV_OPT_TYPE_INT:

  936.                 av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<int>");

  937.                 break;

  938.             case AV_OPT_TYPE_INT64:

  939.                 av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<int64>");

  940.                 break;

  941.             case AV_OPT_TYPE_DOUBLE:

  942.                 av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<double>");

  943.                 break;

  944.             case AV_OPT_TYPE_FLOAT:

  945.                 av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<float>");

  946.                 break;

  947.             case AV_OPT_TYPE_STRING:

  948.                 av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<string>");

  949.                 break;

  950.             case AV_OPT_TYPE_RATIONAL:

  951.                 av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<rational>");

  952.                 break;

  953.             case AV_OPT_TYPE_BINARY:

  954.                 av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<binary>");

  955.                 break;

  956.             case AV_OPT_TYPE_IMAGE_SIZE:

  957.                 av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<image_size>");

  958.                 break;

  959.             case AV_OPT_TYPE_VIDEO_RATE:

  960.                 av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<video_rate>");

  961.                 break;

  962.             case AV_OPT_TYPE_PIXEL_FMT:

  963.                 av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<pix_fmt>");

  964.                 break;

  965.             case AV_OPT_TYPE_SAMPLE_FMT:

  966.                 av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<sample_fmt>");

  967.                 break;

  968.             case AV_OPT_TYPE_DURATION:

  969.                 av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<duration>");

  970.                 break;

  971.             case AV_OPT_TYPE_COLOR:

  972.                 av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<color>");

  973.                 break;

  974.             case AV_OPT_TYPE_CHANNEL_LAYOUT:

  975.                 av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<channel_layout>");

  976.                 break;

  977.             case AV_OPT_TYPE_CONST:

  978.             default:

  979.                 av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "");

  980.                 break;

  981.         }

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

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

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

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

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

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

  988. 

  989.         if (opt->help)

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

  991. 

  992.         if (av_opt_query_ranges(&r, obj, opt->name, AV_OPT_SEARCH_FAKE_OBJ) >= 0) {

  993.             switch (opt->type) {

  994.             case AV_OPT_TYPE_INT:

  995.             case AV_OPT_TYPE_INT64:

  996.             case AV_OPT_TYPE_DOUBLE:

  997.             case AV_OPT_TYPE_FLOAT:

  998.             case AV_OPT_TYPE_RATIONAL:

  999.                 for (i = 0; i < r->nb_ranges; i++) {

  1000.                     av_log(av_log_obj, AV_LOG_INFO, " (from ");

  1001.                     log_value(av_log_obj, AV_LOG_INFO, r->range[i]->value_min);

  1002.                     av_log(av_log_obj, AV_LOG_INFO, " to ");

  1003.                     log_value(av_log_obj, AV_LOG_INFO, r->range[i]->value_max);

  1004.                     av_log(av_log_obj, AV_LOG_INFO, ")");

  1005.                 }

  1006.                 break;

  1007.             }

  1008.             av_opt_freep_ranges(&r);

  1009.         }

  1010. 

  1011.         if (opt->type != AV_OPT_TYPE_CONST  &&

  1012.             opt->type != AV_OPT_TYPE_BINARY &&

  1013.                 !((opt->type == AV_OPT_TYPE_COLOR      ||

  1014.                    opt->type == AV_OPT_TYPE_IMAGE_SIZE ||

  1015.                    opt->type == AV_OPT_TYPE_STRING     ||

  1016.                    opt->type == AV_OPT_TYPE_VIDEO_RATE) &&

  1017.                   !opt->default_val.str)) {

  1018.             av_log(av_log_obj, AV_LOG_INFO, " (default ");

  1019.             switch (opt->type) {

  1020.             case AV_OPT_TYPE_FLAGS:

  1021.                 av_log(av_log_obj, AV_LOG_INFO, "%"PRIX64, opt->default_val.i64);

  1022.                 break;

  1023.             case AV_OPT_TYPE_DURATION:

  1024.             case AV_OPT_TYPE_INT:

  1025.             case AV_OPT_TYPE_INT64:

  1026.                 log_value(av_log_obj, AV_LOG_INFO, opt->default_val.i64);

  1027.                 break;

  1028.             case AV_OPT_TYPE_DOUBLE:

  1029.             case AV_OPT_TYPE_FLOAT:

  1030.                 log_value(av_log_obj, AV_LOG_INFO, opt->default_val.dbl);

  1031.                 break;

  1032.             case AV_OPT_TYPE_RATIONAL: {

  1033.                 AVRational q = av_d2q(opt->default_val.dbl, INT_MAX);

  1034.                 av_log(av_log_obj, AV_LOG_INFO, "%d/%d", q.num, q.den); }

  1035.                 break;

  1036.             case AV_OPT_TYPE_PIXEL_FMT:

  1037.                 av_log(av_log_obj, AV_LOG_INFO, "%s", (char *)av_x_if_null(av_get_pix_fmt_name(opt->default_val.i64), "none"));

  1038.                 break;

  1039.             case AV_OPT_TYPE_SAMPLE_FMT:

  1040.                 av_log(av_log_obj, AV_LOG_INFO, "%s", (char *)av_x_if_null(av_get_sample_fmt_name(opt->default_val.i64), "none"));

  1041.                 break;

  1042.             case AV_OPT_TYPE_COLOR:

  1043.             case AV_OPT_TYPE_IMAGE_SIZE:

  1044.             case AV_OPT_TYPE_STRING:

  1045.             case AV_OPT_TYPE_VIDEO_RATE:

  1046.                 av_log(av_log_obj, AV_LOG_INFO, "\"%s\"", opt->default_val.str);

  1047.                 break;

  1048.             case AV_OPT_TYPE_CHANNEL_LAYOUT:

  1049.                 av_log(av_log_obj, AV_LOG_INFO, "0x%"PRIx64, opt->default_val.i64);

  1050.                 break;

  1051.             }

  1052.             av_log(av_log_obj, AV_LOG_INFO, ")");

  1053.         }

  1054. 

  1055.         av_log(av_log_obj, AV_LOG_INFO, "\n");

  1056.         if (opt->unit && opt->type != AV_OPT_TYPE_CONST) {

  1057.             opt_list(obj, av_log_obj, opt->unit, req_flags, rej_flags);

  1058.         }

  1059.     }

  1060. }

  1061. 

  1062. int av_opt_show2(void *obj, void *av_log_obj, int req_flags, int rej_flags)

  1063. {

  1064.     if (!obj)

  1065.         return -1;

  1066. 

  1067.     av_log(av_log_obj, AV_LOG_INFO, "%s AVOptions:\n", (*(AVClass**)obj)->class_name);

  1068. 

  1069.     opt_list(obj, av_log_obj, NULL, req_flags, rej_flags);

  1070. 

  1071.     return 0;

  1072. }

  1073. 

  1074. void av_opt_set_defaults(void *s)

  1075. {

  1076. #if FF_API_OLD_AVOPTIONS

  1077.     av_opt_set_defaults2(s, 0, 0);

  1078. }

  1079. 

  1080. void av_opt_set_defaults2(void *s, int mask, int flags)

  1081. {

  1082. #endif

  1083.     const AVClass *class = *(AVClass **)s;

  1084.     const AVOption *opt = NULL;

  1085.     while ((opt = av_opt_next(s, opt)) != NULL) {

  1086. #if FF_API_OLD_AVOPTIONS

  1087.         if ((opt->flags & mask) != flags)

  1088.             continue;

  1089. #endif

  1090.         switch (opt->type) {

  1091.             case AV_OPT_TYPE_CONST:

  1092.                 /* Nothing to be done here */

  1093.             break;

  1094.             case AV_OPT_TYPE_FLAGS:

  1095.             case AV_OPT_TYPE_INT:

  1096.             case AV_OPT_TYPE_INT64:

  1097.             case AV_OPT_TYPE_DURATION:

  1098.             case AV_OPT_TYPE_CHANNEL_LAYOUT:

  1099.                 av_opt_set_int(s, opt->name, opt->default_val.i64, 0);

  1100.             break;

  1101.             case AV_OPT_TYPE_DOUBLE:

  1102.             case AV_OPT_TYPE_FLOAT: {

  1103.                 double val;

  1104.                 val = opt->default_val.dbl;

  1105.                 av_opt_set_double(s, opt->name, val, 0);

  1106.             }

  1107.             break;

  1108.             case AV_OPT_TYPE_RATIONAL: {

  1109.                 AVRational val;

  1110.                 val = av_d2q(opt->default_val.dbl, INT_MAX);

  1111.                 av_opt_set_q(s, opt->name, val, 0);

  1112.             }

  1113.             break;

  1114.             case AV_OPT_TYPE_COLOR:

  1115.             case AV_OPT_TYPE_STRING:

  1116.             case AV_OPT_TYPE_IMAGE_SIZE:

  1117.             case AV_OPT_TYPE_VIDEO_RATE:

  1118.                 av_opt_set(s, opt->name, opt->default_val.str, 0);

  1119.                 break;

  1120.             case AV_OPT_TYPE_PIXEL_FMT:

  1121. #if LIBAVUTIL_VERSION_MAJOR < 53

  1122.                 if (class->version && class->version < AV_VERSION_INT(52, 10, 100))

  1123.                     av_opt_set(s, opt->name, opt->default_val.str, 0);

  1124.                 else

  1125. #endif

  1126.                     av_opt_set_pixel_fmt(s, opt->name, opt->default_val.i64, 0);

  1127.                 break;

  1128.             case AV_OPT_TYPE_SAMPLE_FMT:

  1129. #if LIBAVUTIL_VERSION_MAJOR < 53

  1130.                 if (class->version && class->version < AV_VERSION_INT(52, 10, 100))

  1131.                     av_opt_set(s, opt->name, opt->default_val.str, 0);

  1132.                 else

  1133. #endif

  1134.                     av_opt_set_sample_fmt(s, opt->name, opt->default_val.i64, 0);

  1135.                 break;

  1136.             case AV_OPT_TYPE_BINARY:

  1137.                 /* Cannot set default for binary */

  1138.             break;

  1139.             default:

  1140.                 av_log(s, AV_LOG_DEBUG, "AVOption type %d of option %s not implemented yet\n", opt->type, opt->name);

  1141.         }

  1142.     }

  1143. }

  1144. 

  1145. /**

  1146.  * Store the value in the field in ctx that is named like key.

  1147.  * ctx must be an AVClass context, storing is done using AVOptions.

  1148.  *

  1149.  * @param buf the string to parse, buf will be updated to point at the

  1150.  * separator just after the parsed key/value pair

  1151.  * @param key_val_sep a 0-terminated list of characters used to

  1152.  * separate key from value

  1153.  * @param pairs_sep a 0-terminated list of characters used to separate

  1154.  * two pairs from each other

  1155.  * @return 0 if the key/value pair has been successfully parsed and

  1156.  * set, or a negative value corresponding to an AVERROR code in case

  1157.  * of error:

  1158.  * AVERROR(EINVAL) if the key/value pair cannot be parsed,

  1159.  * the error code issued by av_opt_set() if the key/value pair

  1160.  * cannot be set

  1161.  */

  1162. static int parse_key_value_pair(void *ctx, const char **buf,

  1163.                                 const char *key_val_sep, const char *pairs_sep)

  1164. {

  1165.     char *key = av_get_token(buf, key_val_sep);

  1166.     char *val;

  1167.     int ret;

  1168. 

  1169.     if (!key)

  1170.         return AVERROR(ENOMEM);

  1171. 

  1172.     if (*key && strspn(*buf, key_val_sep)) {

  1173.         (*buf)++;

  1174.         val = av_get_token(buf, pairs_sep);

  1175.         if (!val) {

  1176.             av_freep(&key);

  1177.             return AVERROR(ENOMEM);

  1178.         }

  1179.     } else {

  1180.         av_log(ctx, AV_LOG_ERROR, "Missing key or no key/value separator found after key '%s'\n", key);

  1181.         av_free(key);

  1182.         return AVERROR(EINVAL);

  1183.     }

  1184. 

  1185.     av_log(ctx, AV_LOG_DEBUG, "Setting entry with key '%s' to value '%s'\n", key, val);

  1186. 

  1187.     ret = av_opt_set(ctx, key, val, AV_OPT_SEARCH_CHILDREN);

  1188.     if (ret == AVERROR_OPTION_NOT_FOUND)

  1189.         av_log(ctx, AV_LOG_ERROR, "Key '%s' not found.\n", key);

  1190. 

  1191.     av_free(key);

  1192.     av_free(val);

  1193.     return ret;

  1194. }

  1195. 

  1196. int av_set_options_string(void *ctx, const char *opts,

  1197.                           const char *key_val_sep, const char *pairs_sep)

  1198. {

  1199.     int ret, count = 0;

  1200. 

  1201.     if (!opts)

  1202.         return 0;

  1203. 

  1204.     while (*opts) {

  1205.         if ((ret = parse_key_value_pair(ctx, &opts, key_val_sep, pairs_sep)) < 0)

  1206.             return ret;

  1207.         count++;

  1208. 

  1209.         if (*opts)

  1210.             opts++;

  1211.     }

  1212. 

  1213.     return count;

  1214. }

  1215. 

  1216. #define WHITESPACES " \n\t"

  1217. 

  1218. static int is_key_char(char c)

  1219. {

  1220.     return (unsigned)((c | 32) - 'a') < 26 ||

  1221.            (unsigned)(c - '0') < 10 ||

  1222.            c == '-' || c == '_' || c == '/' || c == '.';

  1223. }

  1224. 

  1225. /**

  1226.  * Read a key from a string.

  1227.  *

  1228.  * The key consists of is_key_char characters and must be terminated by a

  1229.  * character from the delim string; spaces are ignored.

  1230.  *

  1231.  * @return  0 for success (even with ellipsis), <0 for failure

  1232.  */

  1233. static int get_key(const char **ropts, const char *delim, char **rkey)

  1234. {

  1235.     const char *opts = *ropts;

  1236.     const char *key_start, *key_end;

  1237. 

  1238.     key_start = opts += strspn(opts, WHITESPACES);

  1239.     while (is_key_char(*opts))

  1240.         opts++;

  1241.     key_end = opts;

  1242.     opts += strspn(opts, WHITESPACES);

  1243.     if (!*opts || !strchr(delim, *opts))

  1244.         return AVERROR(EINVAL);

  1245.     opts++;

  1246.     if (!(*rkey = av_malloc(key_end - key_start + 1)))

  1247.         return AVERROR(ENOMEM);

  1248.     memcpy(*rkey, key_start, key_end - key_start);

  1249.     (*rkey)[key_end - key_start] = 0;

  1250.     *ropts = opts;

  1251.     return 0;

  1252. }

  1253. 

  1254. int av_opt_get_key_value(const char **ropts,

  1255.                          const char *key_val_sep, const char *pairs_sep,

  1256.                          unsigned flags,

  1257.                          char **rkey, char **rval)

  1258. {

  1259.     int ret;

  1260.     char *key = NULL, *val;

  1261.     const char *opts = *ropts;

  1262. 

  1263.     if ((ret = get_key(&opts, key_val_sep, &key)) < 0 &&

  1264.         !(flags & AV_OPT_FLAG_IMPLICIT_KEY))

  1265.         return AVERROR(EINVAL);

  1266.     if (!(val = av_get_token(&opts, pairs_sep))) {

  1267.         av_free(key);

  1268.         return AVERROR(ENOMEM);

  1269.     }

  1270.     *ropts = opts;

  1271.     *rkey  = key;

  1272.     *rval  = val;

  1273.     return 0;

  1274. }

  1275. 

  1276. int av_opt_set_from_string(void *ctx, const char *opts,

  1277.                            const char *const *shorthand,

  1278.                            const char *key_val_sep, const char *pairs_sep)

  1279. {

  1280.     int ret, count = 0;

  1281.     const char *dummy_shorthand = NULL;

  1282.     char *av_uninit(parsed_key), *av_uninit(value);

  1283.     const char *key;

  1284. 

  1285.     if (!opts)

  1286.         return 0;

  1287.     if (!shorthand)

  1288.         shorthand = &dummy_shorthand;

  1289. 

  1290.     while (*opts) {

  1291.         ret = av_opt_get_key_value(&opts, key_val_sep, pairs_sep,

  1292.                                    *shorthand ? AV_OPT_FLAG_IMPLICIT_KEY : 0,

  1293.                                    &parsed_key, &value);

  1294.         if (ret < 0) {

  1295.             if (ret == AVERROR(EINVAL))

  1296.                 av_log(ctx, AV_LOG_ERROR, "No option name near '%s'\n", opts);

  1297.             else

  1298.                 av_log(ctx, AV_LOG_ERROR, "Unable to parse '%s': %s\n", opts,

  1299.                        av_err2str(ret));

  1300.             return ret;

  1301.         }

  1302.         if (*opts)

  1303.             opts++;

  1304.         if (parsed_key) {

  1305.             key = parsed_key;

  1306.             while (*shorthand) /* discard all remaining shorthand */

  1307.                 shorthand++;

  1308.         } else {

  1309.             key = *(shorthand++);

  1310.         }

  1311. 

  1312.         av_log(ctx, AV_LOG_DEBUG, "Setting '%s' to value '%s'\n", key, value);

  1313.         if ((ret = av_opt_set(ctx, key, value, 0)) < 0) {

  1314.             if (ret == AVERROR_OPTION_NOT_FOUND)

  1315.                 av_log(ctx, AV_LOG_ERROR, "Option '%s' not found\n", key);

  1316.             av_free(value);

  1317.             av_free(parsed_key);

  1318.             return ret;

  1319.         }

  1320. 

  1321.         av_free(value);

  1322.         av_free(parsed_key);

  1323.         count++;

  1324.     }

  1325.     return count;

  1326. }

  1327. 

  1328. void av_opt_free(void *obj)

  1329. {

  1330.     const AVOption *o = NULL;

  1331.     while ((o = av_opt_next(obj, o)))

  1332.         if (o->type == AV_OPT_TYPE_STRING || o->type == AV_OPT_TYPE_BINARY)

  1333.             av_freep((uint8_t *)obj + o->offset);

  1334. }

  1335. 

  1336. int av_opt_set_dict(void *obj, AVDictionary **options)

  1337. {

  1338.     AVDictionaryEntry *t = NULL;

  1339.     AVDictionary    *tmp = NULL;

  1340.     int ret = 0;

  1341. 

  1342.     while ((t = av_dict_get(*options, "", t, AV_DICT_IGNORE_SUFFIX))) {

  1343.         ret = av_opt_set(obj, t->key, t->value, 0);

  1344.         if (ret == AVERROR_OPTION_NOT_FOUND)

  1345.             av_dict_set(&tmp, t->key, t->value, 0);

  1346.         else if (ret < 0) {

  1347.             av_log(obj, AV_LOG_ERROR, "Error setting option %s to value %s.\n", t->key, t->value);

  1348.             break;

  1349.         }

  1350.         ret = 0;

  1351.     }

  1352.     av_dict_free(options);

  1353.     *options = tmp;

  1354.     return ret;

  1355. }

  1356. 

  1357. const AVOption *av_opt_find(void *obj, const char *name, const char *unit,

  1358.                             int opt_flags, int search_flags)

  1359. {

  1360.     return av_opt_find2(obj, name, unit, opt_flags, search_flags, NULL);

  1361. }

  1362. 

  1363. const AVOption *av_opt_find2(void *obj, const char *name, const char *unit,

  1364.                              int opt_flags, int search_flags, void **target_obj)

  1365. {

  1366.     const AVClass  *c;

  1367.     const AVOption *o = NULL;

  1368. 

  1369.     if(!obj)

  1370.         return NULL;

  1371. 

  1372.     c= *(AVClass**)obj;

  1373. 

  1374.     if (!c)

  1375.         return NULL;

  1376. 

  1377.     if (search_flags & AV_OPT_SEARCH_CHILDREN) {

  1378.         if (search_flags & AV_OPT_SEARCH_FAKE_OBJ) {

  1379.             const AVClass *child = NULL;

  1380.             while (child = av_opt_child_class_next(c, child))

  1381.                 if (o = av_opt_find2(&child, name, unit, opt_flags, search_flags, NULL))

  1382.                     return o;

  1383.         } else {

  1384.             void *child = NULL;

  1385.             while (child = av_opt_child_next(obj, child))

  1386.                 if (o = av_opt_find2(child, name, unit, opt_flags, search_flags, target_obj))

  1387.                     return o;

  1388.         }

  1389.     }

  1390. 

  1391.     while (o = av_opt_next(obj, o)) {

  1392.         if (!strcmp(o->name, name) && (o->flags & opt_flags) == opt_flags &&

  1393.             ((!unit && o->type != AV_OPT_TYPE_CONST) ||

  1394.              (unit  && o->type == AV_OPT_TYPE_CONST && o->unit && !strcmp(o->unit, unit)))) {

  1395.             if (target_obj) {

  1396.                 if (!(search_flags & AV_OPT_SEARCH_FAKE_OBJ))

  1397.                     *target_obj = obj;

  1398.                 else

  1399.                     *target_obj = NULL;

  1400.             }

  1401.             return o;

  1402.         }

  1403.     }

  1404.     return NULL;

  1405. }

  1406. 

  1407. void *av_opt_child_next(void *obj, void *prev)

  1408. {

  1409.     const AVClass *c = *(AVClass**)obj;

  1410.     if (c->child_next)

  1411.         return c->child_next(obj, prev);

  1412.     return NULL;

  1413. }

  1414. 

  1415. const AVClass *av_opt_child_class_next(const AVClass *parent, const AVClass *prev)

  1416. {

  1417.     if (parent->child_class_next)

  1418.         return parent->child_class_next(prev);

  1419.     return NULL;

  1420. }

  1421. 

  1422. void *av_opt_ptr(const AVClass *class, void *obj, const char *name)

  1423. {

  1424.     const AVOption *opt= av_opt_find2(&class, name, NULL, 0, AV_OPT_SEARCH_FAKE_OBJ, NULL);

  1425.     if(!opt)

  1426.         return NULL;

  1427.     return (uint8_t*)obj + opt->offset;

  1428. }

  1429. 

  1430. int av_opt_query_ranges(AVOptionRanges **ranges_arg, void *obj, const char *key, int flags)

  1431. {

  1432.     const AVClass *c = *(AVClass**)obj;

  1433.     int (*callback)(AVOptionRanges **, void *obj, const char *key, int flags) = NULL;

  1434. 

  1435.     if (c->version > (52 << 16 | 11 << 8))

  1436.         callback = c->query_ranges;

  1437. 

  1438.     if (!callback)

  1439.         callback = av_opt_query_ranges_default;

  1440. 

  1441.     return callback(ranges_arg, obj, key, flags);

  1442. }

  1443. 

  1444. int av_opt_query_ranges_default(AVOptionRanges **ranges_arg, void *obj, const char *key, int flags)

  1445. {

  1446.     AVOptionRanges *ranges = av_mallocz(sizeof(*ranges));

  1447.     AVOptionRange **range_array = av_mallocz(sizeof(void*));

  1448.     AVOptionRange *range = av_mallocz(sizeof(*range));

  1449.     const AVOption *field = av_opt_find(obj, key, NULL, 0, flags);

  1450.     int ret;

  1451. 

  1452.     *ranges_arg = NULL;

  1453. 

  1454.     if (!ranges || !range || !range_array || !field) {

  1455.         ret = AVERROR(ENOMEM);

  1456.         goto fail;

  1457.     }

  1458. 

  1459.     ranges->range = range_array;

  1460.     ranges->range[0] = range;

  1461.     ranges->nb_ranges = 1;

  1462.     range->is_range = 1;

  1463.     range->value_min = field->min;

  1464.     range->value_max = field->max;

  1465. 

  1466.     switch (field->type) {

  1467.     case AV_OPT_TYPE_INT:

  1468.     case AV_OPT_TYPE_INT64:

  1469.     case AV_OPT_TYPE_PIXEL_FMT:

  1470.     case AV_OPT_TYPE_SAMPLE_FMT:

  1471.     case AV_OPT_TYPE_FLOAT:

  1472.     case AV_OPT_TYPE_DOUBLE:

  1473.     case AV_OPT_TYPE_DURATION:

  1474.     case AV_OPT_TYPE_COLOR:

  1475.     case AV_OPT_TYPE_CHANNEL_LAYOUT:

  1476.         break;

  1477.     case AV_OPT_TYPE_STRING:

  1478.         range->component_min = 0;

  1479.         range->component_max = 0x10FFFF; // max unicode value

  1480.         range->value_min = -1;

  1481.         range->value_max = INT_MAX;

  1482.         break;

  1483.     case AV_OPT_TYPE_RATIONAL:

  1484.         range->component_min = INT_MIN;

  1485.         range->component_max = INT_MAX;

  1486.         break;

  1487.     case AV_OPT_TYPE_IMAGE_SIZE:

  1488.         range->component_min = 0;

  1489.         range->component_max = INT_MAX/128/8;

  1490.         range->value_min = 0;

  1491.         range->value_max = INT_MAX/8;

  1492.         break;

  1493.     case AV_OPT_TYPE_VIDEO_RATE:

  1494.         range->component_min = 1;

  1495.         range->component_max = INT_MAX;

  1496.         range->value_min = 1;

  1497.         range->value_max = INT_MAX;

  1498.         break;

  1499.     default:

  1500.         ret = AVERROR(ENOSYS);

  1501.         goto fail;

  1502.     }

  1503. 

  1504.     *ranges_arg = ranges;

  1505.     return 0;

  1506. fail:

  1507.     av_free(ranges);

  1508.     av_free(range);

  1509.     av_free(range_array);

  1510.     return ret;

  1511. }

  1512. 

  1513. void av_opt_freep_ranges(AVOptionRanges **rangesp)

  1514. {

  1515.     int i;

  1516.     AVOptionRanges *ranges = *rangesp;

  1517. 

  1518.     for (i = 0; i < ranges->nb_ranges; i++) {

  1519.         AVOptionRange *range = ranges->range[i];

  1520.         av_freep(&range->str);

  1521.         av_freep(&ranges->range[i]);

  1522.     }

  1523.     av_freep(&ranges->range);

  1524.     av_freep(rangesp);

  1525. }

  1526. 

  1527. #ifdef TEST

  1528. 

  1529. typedef struct TestContext

  1530. {

  1531.     const AVClass *class;

  1532.     int num;

  1533.     int toggle;

  1534.     char *string;

  1535.     int flags;

  1536.     AVRational rational;

  1537.     AVRational video_rate;

  1538.     int w, h;

  1539.     enum AVPixelFormat pix_fmt;

  1540.     enum AVSampleFormat sample_fmt;

  1541.     int64_t duration;

  1542.     uint8_t color[4];

  1543.     int64_t channel_layout;

  1544. } TestContext;

  1545. 

  1546. #define OFFSET(x) offsetof(TestContext, x)

  1547. 

  1548. #define TEST_FLAG_COOL 01

  1549. #define TEST_FLAG_LAME 02

  1550. #define TEST_FLAG_MU   04

  1551. 

  1552. static const AVOption test_options[]= {

  1553. {"num",      "set num",        OFFSET(num),      AV_OPT_TYPE_INT,      {.i64 = 0},       0,        100                 },

  1554. {"toggle",   "set toggle",     OFFSET(toggle),   AV_OPT_TYPE_INT,      {.i64 = 0},       0,        1                   },

  1555. {"rational", "set rational",   OFFSET(rational), AV_OPT_TYPE_RATIONAL, {.dbl = 0},       0,        10                  },

  1556. {"string",   "set string",     OFFSET(string),   AV_OPT_TYPE_STRING,   {.str = "default"}, CHAR_MIN, CHAR_MAX          },

  1557. {"flags",    "set flags",      OFFSET(flags),    AV_OPT_TYPE_FLAGS,    {.i64 = 0},       0,        INT_MAX, 0, "flags" },

  1558. {"cool",     "set cool flag ", 0,                AV_OPT_TYPE_CONST,    {.i64 = TEST_FLAG_COOL}, INT_MIN,  INT_MAX, 0, "flags" },

  1559. {"lame",     "set lame flag ", 0,                AV_OPT_TYPE_CONST,    {.i64 = TEST_FLAG_LAME}, INT_MIN,  INT_MAX, 0, "flags" },

  1560. {"mu",       "set mu flag ",   0,                AV_OPT_TYPE_CONST,    {.i64 = TEST_FLAG_MU},   INT_MIN,  INT_MAX, 0, "flags" },

  1561. {"size",     "set size",       OFFSET(w),        AV_OPT_TYPE_IMAGE_SIZE,{0},             0,        0                   },

  1562. {"pix_fmt",  "set pixfmt",     OFFSET(pix_fmt),  AV_OPT_TYPE_PIXEL_FMT, {.i64 = AV_PIX_FMT_NONE}, -1, AV_PIX_FMT_NB-1},

  1563. {"sample_fmt", "set samplefmt", OFFSET(sample_fmt), AV_OPT_TYPE_SAMPLE_FMT, {.i64 = AV_SAMPLE_FMT_NONE}, -1, AV_SAMPLE_FMT_NB-1},

  1564. {"video_rate", "set videorate", OFFSET(video_rate), AV_OPT_TYPE_VIDEO_RATE,  {.str = "25"}, 0,     0                   },

  1565. {"duration", "set duration",   OFFSET(duration), AV_OPT_TYPE_DURATION, {.i64 = 0}, 0, INT64_MAX},

  1566. {"color", "set color",   OFFSET(color), AV_OPT_TYPE_COLOR, {.str = "pink"}, 0, 0},

  1567. {"cl", "set channel layout", OFFSET(channel_layout), AV_OPT_TYPE_CHANNEL_LAYOUT, {.i64 = AV_CH_LAYOUT_HEXAGONAL}, 0, INT64_MAX},

  1568. {NULL},

  1569. };

  1570. 

  1571. static const char *test_get_name(void *ctx)

  1572. {

  1573.     return "test";

  1574. }

  1575. 

  1576. static const AVClass test_class = {

  1577.     "TestContext",

  1578.     test_get_name,

  1579.     test_options

  1580. };

  1581. 

  1582. int main(void)

  1583. {

  1584.     int i;

  1585. 

  1586.     printf("\nTesting av_set_options_string()\n");

  1587.     {

  1588.         TestContext test_ctx = { 0 };

  1589.         static const char * const options[] = {

  1590.             "",

  1591.             ":",

  1592.             "=",

  1593.             "foo=:",

  1594.             ":=foo",

  1595.             "=foo",

  1596.             "foo=",

  1597.             "foo",

  1598.             "foo=val",

  1599.             "foo==val",

  1600.             "toggle=:",

  1601.             "string=:",

  1602.             "toggle=1 : foo",

  1603.             "toggle=100",

  1604.             "toggle==1",

  1605.             "flags=+mu-lame : num=42: toggle=0",

  1606.             "num=42 : string=blahblah",

  1607.             "rational=0 : rational=1/2 : rational=1/-1",

  1608.             "rational=-1/0",

  1609.             "size=1024x768",

  1610.             "size=pal",

  1611.             "size=bogus",

  1612.             "pix_fmt=yuv420p",

  1613.             "pix_fmt=2",

  1614.             "pix_fmt=bogus",

  1615.             "sample_fmt=s16",

  1616.             "sample_fmt=2",

  1617.             "sample_fmt=bogus",

  1618.             "video_rate=pal",

  1619.             "video_rate=25",

  1620.             "video_rate=30000/1001",

  1621.             "video_rate=30/1.001",

  1622.             "video_rate=bogus",

  1623.             "duration=bogus",

  1624.             "duration=123.45",

  1625.             "duration=1\\:23\\:45.67",

  1626.             "color=blue",

  1627.             "color=0x223300",

  1628.             "color=0x42FF07AA",

  1629.             "cl=stereo+downmix",

  1630.             "cl=foo",

  1631.         };

  1632. 

  1633.         test_ctx.class = &test_class;

  1634.         av_opt_set_defaults(&test_ctx);

  1635. 

  1636.         av_log_set_level(AV_LOG_DEBUG);

  1637. 

  1638.         for (i=0; i < FF_ARRAY_ELEMS(options); i++) {

  1639.             av_log(&test_ctx, AV_LOG_DEBUG, "Setting options string '%s'\n", options[i]);

  1640.             if (av_set_options_string(&test_ctx, options[i], "=", ":") < 0)

  1641.                 av_log(&test_ctx, AV_LOG_ERROR, "Error setting options string: '%s'\n", options[i]);

  1642.             printf("\n");

  1643.         }

  1644.         av_opt_free(&test_ctx);

  1645.     }

  1646. 

  1647.     printf("\nTesting av_opt_set_from_string()\n");

  1648.     {

  1649.         TestContext test_ctx = { 0 };

  1650.         static const char * const options[] = {

  1651.             "",

  1652.             "5",

  1653.             "5:hello",

  1654.             "5:hello:size=pal",

  1655.             "5:size=pal:hello",

  1656.             ":",

  1657.             "=",

  1658.             " 5 : hello : size = pal ",

  1659.             "a_very_long_option_name_that_will_need_to_be_ellipsized_around_here=42"

  1660.         };

  1661.         static const char * const shorthand[] = { "num", "string", NULL };

  1662. 

  1663.         test_ctx.class = &test_class;

  1664.         av_opt_set_defaults(&test_ctx);

  1665. 

  1666.         av_log_set_level(AV_LOG_DEBUG);

  1667. 

  1668.         for (i=0; i < FF_ARRAY_ELEMS(options); i++) {

  1669.             av_log(&test_ctx, AV_LOG_DEBUG, "Setting options string '%s'\n", options[i]);

  1670.             if (av_opt_set_from_string(&test_ctx, options[i], shorthand, "=", ":") < 0)

  1671.                 av_log(&test_ctx, AV_LOG_ERROR, "Error setting options string: '%s'\n", options[i]);

  1672.             printf("\n");

  1673.         }

  1674.         av_opt_free(&test_ctx);

  1675.     }

  1676. 

  1677.     return 0;

  1678. }

  1679. 

  1680. #endif