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

  256. {

  257.     int ret;

  258. 

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

  260.         dst[0] =

  261.         dst[1] = 0;

  262.         return 0;

  263.     }

  264.     ret = av_parse_video_size(dst, dst + 1, val);

  265.     if (ret < 0)

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

  267.     return ret;

  268. }

  269. 

  270. static int set_string_video_rate(void *obj, const AVOption *o, const char *val, AVRational *dst)

  271. {

  272.     int ret;

  273.     if (!val) {

  274.         ret = AVERROR(EINVAL);

  275.     } else {

  276.         ret = av_parse_video_rate(dst, val);

  277.     }

  278.     if (ret < 0)

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

  280.     return ret;

  281. }

  282. 

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

  284. {

  285.     int ret;

  286. 

  287.     if (!val) {

  288.         return 0;

  289.     } else {

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

  291.         if (ret < 0)

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

  293.         return ret;

  294.     }

  295.     return 0;

  296. }

  297. 

  298. #if FF_API_OLD_AVOPTIONS

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

  300. {

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

  302.     if (o_out)

  303.         *o_out = o;

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

  305. }

  306. #endif

  307. 

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

  309. {

  310.     int ret = 0;

  311.     void *dst, *target_obj;

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

  313.     if (!o || !target_obj)

  314.         return AVERROR_OPTION_NOT_FOUND;

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

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

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

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

  319.                  o->type != AV_OPT_TYPE_CHANNEL_LAYOUT))

  320.         return AVERROR(EINVAL);

  321. 

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

  323.     switch (o->type) {

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

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

  326.     case AV_OPT_TYPE_FLAGS:

  327.     case AV_OPT_TYPE_INT:

  328.     case AV_OPT_TYPE_INT64:

  329.     case AV_OPT_TYPE_FLOAT:

  330.     case AV_OPT_TYPE_DOUBLE:

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

  332.     case AV_OPT_TYPE_IMAGE_SIZE: return set_string_image_size(obj, o, val, dst);

  333.     case AV_OPT_TYPE_VIDEO_RATE: return set_string_video_rate(obj, o, val, dst);

  334.     case AV_OPT_TYPE_PIXEL_FMT:

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

  336.             ret = AV_PIX_FMT_NONE;

  337.         } else {

  338.             ret = av_get_pix_fmt(val);

  339.             if (ret == AV_PIX_FMT_NONE) {

  340.                 char *tail;

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

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

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

  344.                     return AVERROR(EINVAL);

  345.                 }

  346.             }

  347.         }

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

  349.         return 0;

  350.     case AV_OPT_TYPE_SAMPLE_FMT:

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

  352.             ret = AV_SAMPLE_FMT_NONE;

  353.         } else {

  354.             ret = av_get_sample_fmt(val);

  355.             if (ret == AV_SAMPLE_FMT_NONE) {

  356.                 char *tail;

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

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

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

  360.                     return AVERROR(EINVAL);

  361.                 }

  362.             }

  363.         }

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

  365.         return 0;

  366.     case AV_OPT_TYPE_DURATION:

  367.         if (!val) {

  368.             *(int64_t *)dst = 0;

  369.             return 0;

  370.         } else {

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

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

  373.             return ret;

  374.         }

  375.         break;

  376.     case AV_OPT_TYPE_COLOR:      return set_string_color(obj, o, val, dst);

  377.     case AV_OPT_TYPE_CHANNEL_LAYOUT:

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

  379.             *(int64_t *)dst = 0;

  380.         } else {

  381. #if FF_API_GET_CHANNEL_LAYOUT_COMPAT

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

  383. #else

  384.             int64_t cl = av_get_channel_layout(val);

  385. #endif

  386.             if (!cl) {

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

  388.                 ret = AVERROR(EINVAL);

  389.             }

  390.             *(int64_t *)dst = cl;

  391.             return ret;

  392.         }

  393.         break;

  394.     }

  395. 

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

  397.     return AVERROR(EINVAL);

  398. }

  399. 

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

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

  402.     {\

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

  404.             return AVERROR(EINVAL);\

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

  406.     }

  407. 

  408. OPT_EVAL_NUMBER(flags,  AV_OPT_TYPE_FLAGS,    int)

  409. OPT_EVAL_NUMBER(int,    AV_OPT_TYPE_INT,      int)

  410. OPT_EVAL_NUMBER(int64,  AV_OPT_TYPE_INT64,    int64_t)

  411. OPT_EVAL_NUMBER(float,  AV_OPT_TYPE_FLOAT,    float)

  412. OPT_EVAL_NUMBER(double, AV_OPT_TYPE_DOUBLE,   double)

  413. OPT_EVAL_NUMBER(q,      AV_OPT_TYPE_RATIONAL, AVRational)

  414. 

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

  416.                                   int search_flags)

  417. {

  418.     void *dst, *target_obj;

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

  420. 

  421.     if (!o || !target_obj)

  422.         return AVERROR_OPTION_NOT_FOUND;

  423. 

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

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

  426. }

  427. 

  428. #if FF_API_OLD_AVOPTIONS

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

  430. {

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

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

  433.         return NULL;

  434.     return o;

  435. }

  436. 

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

  438. {

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

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

  441.         return NULL;

  442.     return o;

  443. }

  444. 

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

  446. {

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

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

  449.         return NULL;

  450.     return o;

  451. }

  452. #endif

  453. 

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

  455. {

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

  457. }

  458. 

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

  460. {

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

  462. }

  463. 

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

  465. {

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

  467. }

  468. 

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

  470. {

  471.     void *target_obj;

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

  473.     uint8_t *ptr;

  474.     uint8_t **dst;

  475.     int *lendst;

  476. 

  477.     if (!o || !target_obj)

  478.         return AVERROR_OPTION_NOT_FOUND;

  479. 

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

  481.         return AVERROR(EINVAL);

  482. 

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

  484.     if (len && !ptr)

  485.         return AVERROR(ENOMEM);

  486. 

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

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

  489. 

  490.     av_free(*dst);

  491.     *dst = ptr;

  492.     *lendst = len;

  493.     if (len)

  494.         memcpy(ptr, val, len);

  495. 

  496.     return 0;

  497. }

  498. 

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

  500. {

  501.     void *target_obj;

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

  503. 

  504.     if (!o || !target_obj)

  505.         return AVERROR_OPTION_NOT_FOUND;

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

  507.         av_log(obj, AV_LOG_ERROR,

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

  509.         return AVERROR(EINVAL);

  510.     }

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

  512.         av_log(obj, AV_LOG_ERROR,

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

  514.         return AVERROR(EINVAL);

  515.     }

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

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

  518.     return 0;

  519. }

  520. 

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

  522. {

  523.     void *target_obj;

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

  525. 

  526.     if (!o || !target_obj)

  527.         return AVERROR_OPTION_NOT_FOUND;

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

  529.         av_log(obj, AV_LOG_ERROR,

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

  531.         return AVERROR(EINVAL);

  532.     }

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

  534.         return AVERROR(EINVAL);

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

  536. }

  537. 

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

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

  540. {

  541.     void *target_obj;

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

  543.                                      search_flags, &target_obj);

  544.     int min, max;

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

  546. 

  547.     if (!o || !target_obj)

  548.         return AVERROR_OPTION_NOT_FOUND;

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

  550.         av_log(obj, AV_LOG_ERROR,

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

  552.         return AVERROR(EINVAL);

  553.     }

  554. 

  555. #if LIBAVUTIL_VERSION_MAJOR < 53

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

  557.         min = -1;

  558.         max = nb_fmts-1;

  559.     } else

  560. #endif

  561.     {

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

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

  564.     }

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

  566.         av_log(obj, AV_LOG_ERROR,

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

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

  569.         return AVERROR(ERANGE);

  570.     }

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

  572.     return 0;

  573. }

  574. 

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

  576. {

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

  578. }

  579. 

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

  581. {

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

  583. }

  584. 

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

  586. {

  587.     void *target_obj;

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

  589. 

  590.     if (!o || !target_obj)

  591.         return AVERROR_OPTION_NOT_FOUND;

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

  593.         av_log(obj, AV_LOG_ERROR,

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

  595.         return AVERROR(EINVAL);

  596.     }

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

  598.     return 0;

  599. }

  600. 

  601. #if FF_API_OLD_AVOPTIONS

  602. /**

  603.  *

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

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

  606.  */

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

  608. {

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

  610.     void *dst;

  611.     uint8_t *bin;

  612.     int len, i;

  613.     if (!o)

  614.         return NULL;

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

  616.         return NULL;

  617. 

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

  619.     if (o_out) *o_out= o;

  620. 

  621.     switch (o->type) {

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

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

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

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

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

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

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

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

  630.     case AV_OPT_TYPE_BINARY:

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

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

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

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

  635.         break;

  636.     default: return NULL;

  637.     }

  638.     return buf;

  639. }

  640. #endif

  641. 

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

  643. {

  644.     void *dst, *target_obj;

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

  646.     uint8_t *bin, buf[128];

  647.     int len, i, ret;

  648.     int64_t i64;

  649. 

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

  651.         return AVERROR_OPTION_NOT_FOUND;

  652. 

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

  654. 

  655.     buf[0] = 0;

  656.     switch (o->type) {

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

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

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

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

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

  662.     case AV_OPT_TYPE_VIDEO_RATE:

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

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

  665.     case AV_OPT_TYPE_STRING:

  666.         if (*(uint8_t**)dst)

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

  668.         else

  669.             *out_val = av_strdup("");

  670.         return 0;

  671.     case AV_OPT_TYPE_BINARY:

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

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

  674.             return AVERROR(EINVAL);

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

  676.             return AVERROR(ENOMEM);

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

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

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

  680.         return 0;

  681.     case AV_OPT_TYPE_IMAGE_SIZE:

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

  683.         break;

  684.     case AV_OPT_TYPE_PIXEL_FMT:

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

  686.         break;

  687.     case AV_OPT_TYPE_SAMPLE_FMT:

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

  689.         break;

  690.     case AV_OPT_TYPE_DURATION:

  691.         i64 = *(int64_t *)dst;

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

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

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

  695.         break;

  696.     case AV_OPT_TYPE_COLOR:

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

  698.         break;

  699.     case AV_OPT_TYPE_CHANNEL_LAYOUT:

  700.         i64 = *(int64_t *)dst;

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

  702.         break;

  703.     default:

  704.         return AVERROR(EINVAL);

  705.     }

  706. 

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

  708.         return AVERROR(EINVAL);

  709.     *out_val = av_strdup(buf);

  710.     return 0;

  711. }

  712. 

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

  714.                       int search_flags)

  715. {

  716.     void *dst, *target_obj;

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

  718.     if (!o || !target_obj)

  719.         goto error;

  720. 

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

  722. 

  723.     if (o_out) *o_out= o;

  724. 

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

  726. 

  727. error:

  728.     *den=*intnum=0;

  729.     return -1;

  730. }

  731. 

  732. #if FF_API_OLD_AVOPTIONS

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

  734. {

  735.     int64_t intnum=1;

  736.     double num=1;

  737.     int den=1;

  738. 

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

  740.         return NAN;

  741.     return num*intnum/den;

  742. }

  743. 

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

  745. {

  746.     int64_t intnum=1;

  747.     double num=1;

  748.     int den=1;

  749. 

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

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

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

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

  754.     else

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

  756. }

  757. 

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

  759. {

  760.     int64_t intnum=1;

  761.     double num=1;

  762.     int den=1;

  763. 

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

  765.         return -1;

  766.     return num*intnum/den;

  767. }

  768. #endif

  769. 

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

  771. {

  772.     int64_t intnum = 1;

  773.     double     num = 1;

  774.     int   ret, den = 1;

  775. 

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

  777.         return ret;

  778.     *out_val = num*intnum/den;

  779.     return 0;

  780. }

  781. 

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

  783. {

  784.     int64_t intnum = 1;

  785.     double     num = 1;

  786.     int   ret, den = 1;

  787. 

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

  789.         return ret;

  790.     *out_val = num*intnum/den;

  791.     return 0;

  792. }

  793. 

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

  795. {

  796.     int64_t intnum = 1;

  797.     double     num = 1;

  798.     int   ret, den = 1;

  799. 

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

  801.         return ret;

  802. 

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

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

  805.     else

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

  807.     return 0;

  808. }

  809. 

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

  811. {

  812.     void *dst, *target_obj;

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

  814.     if (!o || !target_obj)

  815.         return AVERROR_OPTION_NOT_FOUND;

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

  817.         av_log(obj, AV_LOG_ERROR,

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

  819.         return AVERROR(EINVAL);

  820.     }

  821. 

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

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

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

  825.     return 0;

  826. }

  827. 

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

  829. {

  830.     int64_t intnum = 1;

  831.     double     num = 1;

  832.     int   ret, den = 1;

  833. 

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

  835.         return ret;

  836. 

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

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

  839.     else

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

  841.     return 0;

  842. }

  843. 

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

  845.                       enum AVOptionType type, const char *desc)

  846. {

  847.     void *dst, *target_obj;

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

  849.     if (!o || !target_obj)

  850.         return AVERROR_OPTION_NOT_FOUND;

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

  852.         av_log(obj, AV_LOG_ERROR,

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

  854.         return AVERROR(EINVAL);

  855.     }

  856. 

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

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

  859.     return 0;

  860. }

  861. 

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

  863. {

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

  865. }

  866. 

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

  868. {

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

  870. }

  871. 

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

  873. {

  874.     void *dst, *target_obj;

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

  876.     if (!o || !target_obj)

  877.         return AVERROR_OPTION_NOT_FOUND;

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

  879.         av_log(obj, AV_LOG_ERROR,

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

  881.         return AVERROR(EINVAL);

  882.     }

  883. 

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

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

  886.     return 0;

  887. }

  888. 

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

  890. {

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

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

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

  894.     int64_t res;

  895. 

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

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

  898.         return 0;

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

  900. }

  901. 

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

  903. {

  904.     if      (d == INT_MAX) {

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

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

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

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

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

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

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

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

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

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

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

  916.     } else {

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

  918.     }

  919. }

  920. 

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

  922.                      int req_flags, int rej_flags)

  923. {

  924.     const AVOption *opt=NULL;

  925.     AVOptionRanges *r;

  926.     int i;

  927. 

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

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

  930.             continue;

  931. 

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

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

  934.          * Only print items from the requested unit.

  935.          */

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

  937.             continue;

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

  939.             continue;

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

  941.             continue;

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

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

  944.         else

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

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

  947.                    opt->name);

  948. 

  949.         switch (opt->type) {

  950.             case AV_OPT_TYPE_FLAGS:

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

  952.                 break;

  953.             case AV_OPT_TYPE_INT:

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

  955.                 break;

  956.             case AV_OPT_TYPE_INT64:

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

  958.                 break;

  959.             case AV_OPT_TYPE_DOUBLE:

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

  961.                 break;

  962.             case AV_OPT_TYPE_FLOAT:

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

  964.                 break;

  965.             case AV_OPT_TYPE_STRING:

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

  967.                 break;

  968.             case AV_OPT_TYPE_RATIONAL:

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

  970.                 break;

  971.             case AV_OPT_TYPE_BINARY:

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

  973.                 break;

  974.             case AV_OPT_TYPE_IMAGE_SIZE:

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

  976.                 break;

  977.             case AV_OPT_TYPE_VIDEO_RATE:

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

  979.                 break;

  980.             case AV_OPT_TYPE_PIXEL_FMT:

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

  982.                 break;

  983.             case AV_OPT_TYPE_SAMPLE_FMT:

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

  985.                 break;

  986.             case AV_OPT_TYPE_DURATION:

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

  988.                 break;

  989.             case AV_OPT_TYPE_COLOR:

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

  991.                 break;

  992.             case AV_OPT_TYPE_CHANNEL_LAYOUT:

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

  994.                 break;

  995.             case AV_OPT_TYPE_CONST:

  996.             default:

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

  998.                 break;

  999.         }

  1000.         av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_ENCODING_PARAM) ? 'E' : '.');

  1001.         av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_DECODING_PARAM) ? 'D' : '.');

  1002.         av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_FILTERING_PARAM)? 'F' : '.');

  1003.         av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_VIDEO_PARAM   ) ? 'V' : '.');

  1004.         av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_AUDIO_PARAM   ) ? 'A' : '.');

  1005.         av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_SUBTITLE_PARAM) ? 'S' : '.');

  1006. 

  1007.         if (opt->help)

  1008.             av_log(av_log_obj, AV_LOG_INFO, " %s", opt->help);

  1009. 

  1010.         if (av_opt_query_ranges(&r, obj, opt->name, AV_OPT_SEARCH_FAKE_OBJ) >= 0) {

  1011.             switch (opt->type) {

  1012.             case AV_OPT_TYPE_INT:

  1013.             case AV_OPT_TYPE_INT64:

  1014.             case AV_OPT_TYPE_DOUBLE:

  1015.             case AV_OPT_TYPE_FLOAT:

  1016.             case AV_OPT_TYPE_RATIONAL:

  1017.                 for (i = 0; i < r->nb_ranges; i++) {

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

  1019.                     log_value(av_log_obj, AV_LOG_INFO, r->range[i]->value_min);

  1020.                     av_log(av_log_obj, AV_LOG_INFO, " to ");

  1021.                     log_value(av_log_obj, AV_LOG_INFO, r->range[i]->value_max);

  1022.                     av_log(av_log_obj, AV_LOG_INFO, ")");

  1023.                 }

  1024.                 break;

  1025.             }

  1026.             av_opt_freep_ranges(&r);

  1027.         }

  1028. 

  1029.         if (opt->type != AV_OPT_TYPE_CONST  &&

  1030.             opt->type != AV_OPT_TYPE_BINARY &&

  1031.                 !((opt->type == AV_OPT_TYPE_COLOR      ||

  1032.                    opt->type == AV_OPT_TYPE_IMAGE_SIZE ||

  1033.                    opt->type == AV_OPT_TYPE_STRING     ||

  1034.                    opt->type == AV_OPT_TYPE_VIDEO_RATE) &&

  1035.                   !opt->default_val.str)) {

  1036.             av_log(av_log_obj, AV_LOG_INFO, " (default ");

  1037.             switch (opt->type) {

  1038.             case AV_OPT_TYPE_FLAGS:

  1039.                 av_log(av_log_obj, AV_LOG_INFO, "%"PRIX64, opt->default_val.i64);

  1040.                 break;

  1041.             case AV_OPT_TYPE_DURATION:

  1042.             case AV_OPT_TYPE_INT:

  1043.             case AV_OPT_TYPE_INT64:

  1044.                 log_value(av_log_obj, AV_LOG_INFO, opt->default_val.i64);

  1045.                 break;

  1046.             case AV_OPT_TYPE_DOUBLE:

  1047.             case AV_OPT_TYPE_FLOAT:

  1048.                 log_value(av_log_obj, AV_LOG_INFO, opt->default_val.dbl);

  1049.                 break;

  1050.             case AV_OPT_TYPE_RATIONAL: {

  1051.                 AVRational q = av_d2q(opt->default_val.dbl, INT_MAX);

  1052.                 av_log(av_log_obj, AV_LOG_INFO, "%d/%d", q.num, q.den); }

  1053.                 break;

  1054.             case AV_OPT_TYPE_PIXEL_FMT:

  1055.                 av_log(av_log_obj, AV_LOG_INFO, "%s", (char *)av_x_if_null(av_get_pix_fmt_name(opt->default_val.i64), "none"));

  1056.                 break;

  1057.             case AV_OPT_TYPE_SAMPLE_FMT:

  1058.                 av_log(av_log_obj, AV_LOG_INFO, "%s", (char *)av_x_if_null(av_get_sample_fmt_name(opt->default_val.i64), "none"));

  1059.                 break;

  1060.             case AV_OPT_TYPE_COLOR:

  1061.             case AV_OPT_TYPE_IMAGE_SIZE:

  1062.             case AV_OPT_TYPE_STRING:

  1063.             case AV_OPT_TYPE_VIDEO_RATE:

  1064.                 av_log(av_log_obj, AV_LOG_INFO, "\"%s\"", opt->default_val.str);

  1065.                 break;

  1066.             case AV_OPT_TYPE_CHANNEL_LAYOUT:

  1067.                 av_log(av_log_obj, AV_LOG_INFO, "0x%"PRIx64, opt->default_val.i64);

  1068.                 break;

  1069.             }

  1070.             av_log(av_log_obj, AV_LOG_INFO, ")");

  1071.         }

  1072. 

  1073.         av_log(av_log_obj, AV_LOG_INFO, "\n");

  1074.         if (opt->unit && opt->type != AV_OPT_TYPE_CONST) {

  1075.             opt_list(obj, av_log_obj, opt->unit, req_flags, rej_flags);

  1076.         }

  1077.     }

  1078. }

  1079. 

  1080. int av_opt_show2(void *obj, void *av_log_obj, int req_flags, int rej_flags)

  1081. {

  1082.     if (!obj)

  1083.         return -1;

  1084. 

  1085.     av_log(av_log_obj, AV_LOG_INFO, "%s AVOptions:\n", (*(AVClass**)obj)->class_name);

  1086. 

  1087.     opt_list(obj, av_log_obj, NULL, req_flags, rej_flags);

  1088. 

  1089.     return 0;

  1090. }

  1091. 

  1092. void av_opt_set_defaults(void *s)

  1093. {

  1094. #if FF_API_OLD_AVOPTIONS

  1095.     av_opt_set_defaults2(s, 0, 0);

  1096. }

  1097. 

  1098. void av_opt_set_defaults2(void *s, int mask, int flags)

  1099. {

  1100. #endif

  1101.     const AVClass *class = *(AVClass **)s;

  1102.     const AVOption *opt = NULL;

  1103.     while ((opt = av_opt_next(s, opt)) != NULL) {

  1104. #if FF_API_OLD_AVOPTIONS

  1105.         if ((opt->flags & mask) != flags)

  1106.             continue;

  1107. #endif

  1108.         switch (opt->type) {

  1109.             case AV_OPT_TYPE_CONST:

  1110.                 /* Nothing to be done here */

  1111.             break;

  1112.             case AV_OPT_TYPE_FLAGS:

  1113.             case AV_OPT_TYPE_INT:

  1114.             case AV_OPT_TYPE_INT64:

  1115.             case AV_OPT_TYPE_DURATION:

  1116.             case AV_OPT_TYPE_CHANNEL_LAYOUT:

  1117.                 av_opt_set_int(s, opt->name, opt->default_val.i64, 0);

  1118.             break;

  1119.             case AV_OPT_TYPE_DOUBLE:

  1120.             case AV_OPT_TYPE_FLOAT: {

  1121.                 double val;

  1122.                 val = opt->default_val.dbl;

  1123.                 av_opt_set_double(s, opt->name, val, 0);

  1124.             }

  1125.             break;

  1126.             case AV_OPT_TYPE_RATIONAL: {

  1127.                 AVRational val;

  1128.                 val = av_d2q(opt->default_val.dbl, INT_MAX);

  1129.                 av_opt_set_q(s, opt->name, val, 0);

  1130.             }

  1131.             break;

  1132.             case AV_OPT_TYPE_COLOR:

  1133.             case AV_OPT_TYPE_STRING:

  1134.             case AV_OPT_TYPE_IMAGE_SIZE:

  1135.             case AV_OPT_TYPE_VIDEO_RATE:

  1136.                 av_opt_set(s, opt->name, opt->default_val.str, 0);

  1137.                 break;

  1138.             case AV_OPT_TYPE_PIXEL_FMT:

  1139. #if LIBAVUTIL_VERSION_MAJOR < 53

  1140.                 if (class->version && class->version < AV_VERSION_INT(52, 10, 100))

  1141.                     av_opt_set(s, opt->name, opt->default_val.str, 0);

  1142.                 else

  1143. #endif

  1144.                     av_opt_set_pixel_fmt(s, opt->name, opt->default_val.i64, 0);

  1145.                 break;

  1146.             case AV_OPT_TYPE_SAMPLE_FMT:

  1147. #if LIBAVUTIL_VERSION_MAJOR < 53

  1148.                 if (class->version && class->version < AV_VERSION_INT(52, 10, 100))

  1149.                     av_opt_set(s, opt->name, opt->default_val.str, 0);

  1150.                 else

  1151. #endif

  1152.                     av_opt_set_sample_fmt(s, opt->name, opt->default_val.i64, 0);

  1153.                 break;

  1154.             case AV_OPT_TYPE_BINARY:

  1155.                 /* Cannot set default for binary */

  1156.             break;

  1157.             default:

  1158.                 av_log(s, AV_LOG_DEBUG, "AVOption type %d of option %s not implemented yet\n", opt->type, opt->name);

  1159.         }

  1160.     }

  1161. }

  1162. 

  1163. /**

  1164.  * Store the value in the field in ctx that is named like key.

  1165.  * ctx must be an AVClass context, storing is done using AVOptions.

  1166.  *

  1167.  * @param buf the string to parse, buf will be updated to point at the

  1168.  * separator just after the parsed key/value pair

  1169.  * @param key_val_sep a 0-terminated list of characters used to

  1170.  * separate key from value

  1171.  * @param pairs_sep a 0-terminated list of characters used to separate

  1172.  * two pairs from each other

  1173.  * @return 0 if the key/value pair has been successfully parsed and

  1174.  * set, or a negative value corresponding to an AVERROR code in case

  1175.  * of error:

  1176.  * AVERROR(EINVAL) if the key/value pair cannot be parsed,

  1177.  * the error code issued by av_opt_set() if the key/value pair

  1178.  * cannot be set

  1179.  */

  1180. static int parse_key_value_pair(void *ctx, const char **buf,

  1181.                                 const char *key_val_sep, const char *pairs_sep)

  1182. {

  1183.     char *key = av_get_token(buf, key_val_sep);

  1184.     char *val;

  1185.     int ret;

  1186. 

  1187.     if (!key)

  1188.         return AVERROR(ENOMEM);

  1189. 

  1190.     if (*key && strspn(*buf, key_val_sep)) {

  1191.         (*buf)++;

  1192.         val = av_get_token(buf, pairs_sep);

  1193.         if (!val) {

  1194.             av_freep(&key);

  1195.             return AVERROR(ENOMEM);

  1196.         }

  1197.     } else {

  1198.         av_log(ctx, AV_LOG_ERROR, "Missing key or no key/value separator found after key '%s'\n", key);

  1199.         av_free(key);

  1200.         return AVERROR(EINVAL);

  1201.     }

  1202. 

  1203.     av_log(ctx, AV_LOG_DEBUG, "Setting entry with key '%s' to value '%s'\n", key, val);

  1204. 

  1205.     ret = av_opt_set(ctx, key, val, AV_OPT_SEARCH_CHILDREN);

  1206.     if (ret == AVERROR_OPTION_NOT_FOUND)

  1207.         av_log(ctx, AV_LOG_ERROR, "Key '%s' not found.\n", key);

  1208. 

  1209.     av_free(key);

  1210.     av_free(val);

  1211.     return ret;

  1212. }

  1213. 

  1214. int av_set_options_string(void *ctx, const char *opts,

  1215.                           const char *key_val_sep, const char *pairs_sep)

  1216. {

  1217.     int ret, count = 0;

  1218. 

  1219.     if (!opts)

  1220.         return 0;

  1221. 

  1222.     while (*opts) {

  1223.         if ((ret = parse_key_value_pair(ctx, &opts, key_val_sep, pairs_sep)) < 0)

  1224.             return ret;

  1225.         count++;

  1226. 

  1227.         if (*opts)

  1228.             opts++;

  1229.     }

  1230. 

  1231.     return count;

  1232. }

  1233. 

  1234. #define WHITESPACES " \n\t"

  1235. 

  1236. static int is_key_char(char c)

  1237. {

  1238.     return (unsigned)((c | 32) - 'a') < 26 ||

  1239.            (unsigned)(c - '0') < 10 ||

  1240.            c == '-' || c == '_' || c == '/' || c == '.';

  1241. }

  1242. 

  1243. /**

  1244.  * Read a key from a string.

  1245.  *

  1246.  * The key consists of is_key_char characters and must be terminated by a

  1247.  * character from the delim string; spaces are ignored.

  1248.  *

  1249.  * @return  0 for success (even with ellipsis), <0 for failure

  1250.  */

  1251. static int get_key(const char **ropts, const char *delim, char **rkey)

  1252. {

  1253.     const char *opts = *ropts;

  1254.     const char *key_start, *key_end;

  1255. 

  1256.     key_start = opts += strspn(opts, WHITESPACES);

  1257.     while (is_key_char(*opts))

  1258.         opts++;

  1259.     key_end = opts;

  1260.     opts += strspn(opts, WHITESPACES);

  1261.     if (!*opts || !strchr(delim, *opts))

  1262.         return AVERROR(EINVAL);

  1263.     opts++;

  1264.     if (!(*rkey = av_malloc(key_end - key_start + 1)))

  1265.         return AVERROR(ENOMEM);

  1266.     memcpy(*rkey, key_start, key_end - key_start);

  1267.     (*rkey)[key_end - key_start] = 0;

  1268.     *ropts = opts;

  1269.     return 0;

  1270. }

  1271. 

  1272. int av_opt_get_key_value(const char **ropts,

  1273.                          const char *key_val_sep, const char *pairs_sep,

  1274.                          unsigned flags,

  1275.                          char **rkey, char **rval)

  1276. {

  1277.     int ret;

  1278.     char *key = NULL, *val;

  1279.     const char *opts = *ropts;

  1280. 

  1281.     if ((ret = get_key(&opts, key_val_sep, &key)) < 0 &&

  1282.         !(flags & AV_OPT_FLAG_IMPLICIT_KEY))

  1283.         return AVERROR(EINVAL);

  1284.     if (!(val = av_get_token(&opts, pairs_sep))) {

  1285.         av_free(key);

  1286.         return AVERROR(ENOMEM);

  1287.     }

  1288.     *ropts = opts;

  1289.     *rkey  = key;

  1290.     *rval  = val;

  1291.     return 0;

  1292. }

  1293. 

  1294. int av_opt_set_from_string(void *ctx, const char *opts,

  1295.                            const char *const *shorthand,

  1296.                            const char *key_val_sep, const char *pairs_sep)

  1297. {

  1298.     int ret, count = 0;

  1299.     const char *dummy_shorthand = NULL;

  1300.     char *av_uninit(parsed_key), *av_uninit(value);

  1301.     const char *key;

  1302. 

  1303.     if (!opts)

  1304.         return 0;

  1305.     if (!shorthand)

  1306.         shorthand = &dummy_shorthand;

  1307. 

  1308.     while (*opts) {

  1309.         ret = av_opt_get_key_value(&opts, key_val_sep, pairs_sep,

  1310.                                    *shorthand ? AV_OPT_FLAG_IMPLICIT_KEY : 0,

  1311.                                    &parsed_key, &value);

  1312.         if (ret < 0) {

  1313.             if (ret == AVERROR(EINVAL))

  1314.                 av_log(ctx, AV_LOG_ERROR, "No option name near '%s'\n", opts);

  1315.             else

  1316.                 av_log(ctx, AV_LOG_ERROR, "Unable to parse '%s': %s\n", opts,

  1317.                        av_err2str(ret));

  1318.             return ret;

  1319.         }

  1320.         if (*opts)

  1321.             opts++;

  1322.         if (parsed_key) {

  1323.             key = parsed_key;

  1324.             while (*shorthand) /* discard all remaining shorthand */

  1325.                 shorthand++;

  1326.         } else {

  1327.             key = *(shorthand++);

  1328.         }

  1329. 

  1330.         av_log(ctx, AV_LOG_DEBUG, "Setting '%s' to value '%s'\n", key, value);

  1331.         if ((ret = av_opt_set(ctx, key, value, 0)) < 0) {

  1332.             if (ret == AVERROR_OPTION_NOT_FOUND)

  1333.                 av_log(ctx, AV_LOG_ERROR, "Option '%s' not found\n", key);

  1334.             av_free(value);

  1335.             av_free(parsed_key);

  1336.             return ret;

  1337.         }

  1338. 

  1339.         av_free(value);

  1340.         av_free(parsed_key);

  1341.         count++;

  1342.     }

  1343.     return count;

  1344. }

  1345. 

  1346. void av_opt_free(void *obj)

  1347. {

  1348.     const AVOption *o = NULL;

  1349.     while ((o = av_opt_next(obj, o)))

  1350.         if (o->type == AV_OPT_TYPE_STRING || o->type == AV_OPT_TYPE_BINARY)

  1351.             av_freep((uint8_t *)obj + o->offset);

  1352. }

  1353. 

  1354. int av_opt_set_dict(void *obj, AVDictionary **options)

  1355. {

  1356.     AVDictionaryEntry *t = NULL;

  1357.     AVDictionary    *tmp = NULL;

  1358.     int ret = 0;

  1359. 

  1360.     while ((t = av_dict_get(*options, "", t, AV_DICT_IGNORE_SUFFIX))) {

  1361.         ret = av_opt_set(obj, t->key, t->value, 0);

  1362.         if (ret == AVERROR_OPTION_NOT_FOUND)

  1363.             av_dict_set(&tmp, t->key, t->value, 0);

  1364.         else if (ret < 0) {

  1365.             av_log(obj, AV_LOG_ERROR, "Error setting option %s to value %s.\n", t->key, t->value);

  1366.             break;

  1367.         }

  1368.         ret = 0;

  1369.     }

  1370.     av_dict_free(options);

  1371.     *options = tmp;

  1372.     return ret;

  1373. }

  1374. 

  1375. const AVOption *av_opt_find(void *obj, const char *name, const char *unit,

  1376.                             int opt_flags, int search_flags)

  1377. {

  1378.     return av_opt_find2(obj, name, unit, opt_flags, search_flags, NULL);

  1379. }

  1380. 

  1381. const AVOption *av_opt_find2(void *obj, const char *name, const char *unit,

  1382.                              int opt_flags, int search_flags, void **target_obj)

  1383. {

  1384.     const AVClass  *c;

  1385.     const AVOption *o = NULL;

  1386. 

  1387.     if(!obj)

  1388.         return NULL;

  1389. 

  1390.     c= *(AVClass**)obj;

  1391. 

  1392.     if (!c)

  1393.         return NULL;

  1394. 

  1395.     if (search_flags & AV_OPT_SEARCH_CHILDREN) {

  1396.         if (search_flags & AV_OPT_SEARCH_FAKE_OBJ) {

  1397.             const AVClass *child = NULL;

  1398.             while (child = av_opt_child_class_next(c, child))

  1399.                 if (o = av_opt_find2(&child, name, unit, opt_flags, search_flags, NULL))

  1400.                     return o;

  1401.         } else {

  1402.             void *child = NULL;

  1403.             while (child = av_opt_child_next(obj, child))

  1404.                 if (o = av_opt_find2(child, name, unit, opt_flags, search_flags, target_obj))

  1405.                     return o;

  1406.         }

  1407.     }

  1408. 

  1409.     while (o = av_opt_next(obj, o)) {

  1410.         if (!strcmp(o->name, name) && (o->flags & opt_flags) == opt_flags &&

  1411.             ((!unit && o->type != AV_OPT_TYPE_CONST) ||

  1412.              (unit  && o->type == AV_OPT_TYPE_CONST && o->unit && !strcmp(o->unit, unit)))) {

  1413.             if (target_obj) {

  1414.                 if (!(search_flags & AV_OPT_SEARCH_FAKE_OBJ))

  1415.                     *target_obj = obj;

  1416.                 else

  1417.                     *target_obj = NULL;

  1418.             }

  1419.             return o;

  1420.         }

  1421.     }

  1422.     return NULL;

  1423. }

  1424. 

  1425. void *av_opt_child_next(void *obj, void *prev)

  1426. {

  1427.     const AVClass *c = *(AVClass**)obj;

  1428.     if (c->child_next)

  1429.         return c->child_next(obj, prev);

  1430.     return NULL;

  1431. }

  1432. 

  1433. const AVClass *av_opt_child_class_next(const AVClass *parent, const AVClass *prev)

  1434. {

  1435.     if (parent->child_class_next)

  1436.         return parent->child_class_next(prev);

  1437.     return NULL;

  1438. }

  1439. 

  1440. void *av_opt_ptr(const AVClass *class, void *obj, const char *name)

  1441. {

  1442.     const AVOption *opt= av_opt_find2(&class, name, NULL, 0, AV_OPT_SEARCH_FAKE_OBJ, NULL);

  1443.     if(!opt)

  1444.         return NULL;

  1445.     return (uint8_t*)obj + opt->offset;

  1446. }

  1447. 

  1448. int av_opt_query_ranges(AVOptionRanges **ranges_arg, void *obj, const char *key, int flags)

  1449. {

  1450.     const AVClass *c = *(AVClass**)obj;

  1451.     int (*callback)(AVOptionRanges **, void *obj, const char *key, int flags) = NULL;

  1452. 

  1453.     if (c->version > (52 << 16 | 11 << 8))

  1454.         callback = c->query_ranges;

  1455. 

  1456.     if (!callback)

  1457.         callback = av_opt_query_ranges_default;

  1458. 

  1459.     return callback(ranges_arg, obj, key, flags);

  1460. }

  1461. 

  1462. int av_opt_query_ranges_default(AVOptionRanges **ranges_arg, void *obj, const char *key, int flags)

  1463. {

  1464.     AVOptionRanges *ranges = av_mallocz(sizeof(*ranges));

  1465.     AVOptionRange **range_array = av_mallocz(sizeof(void*));

  1466.     AVOptionRange *range = av_mallocz(sizeof(*range));

  1467.     const AVOption *field = av_opt_find(obj, key, NULL, 0, flags);

  1468.     int ret;

  1469. 

  1470.     *ranges_arg = NULL;

  1471. 

  1472.     if (!ranges || !range || !range_array || !field) {

  1473.         ret = AVERROR(ENOMEM);

  1474.         goto fail;

  1475.     }

  1476. 

  1477.     ranges->range = range_array;

  1478.     ranges->range[0] = range;

  1479.     ranges->nb_ranges = 1;

  1480.     range->is_range = 1;

  1481.     range->value_min = field->min;

  1482.     range->value_max = field->max;

  1483. 

  1484.     switch (field->type) {

  1485.     case AV_OPT_TYPE_INT:

  1486.     case AV_OPT_TYPE_INT64:

  1487.     case AV_OPT_TYPE_PIXEL_FMT:

  1488.     case AV_OPT_TYPE_SAMPLE_FMT:

  1489.     case AV_OPT_TYPE_FLOAT:

  1490.     case AV_OPT_TYPE_DOUBLE:

  1491.     case AV_OPT_TYPE_DURATION:

  1492.     case AV_OPT_TYPE_COLOR:

  1493.     case AV_OPT_TYPE_CHANNEL_LAYOUT:

  1494.         break;

  1495.     case AV_OPT_TYPE_STRING:

  1496.         range->component_min = 0;

  1497.         range->component_max = 0x10FFFF; // max unicode value

  1498.         range->value_min = -1;

  1499.         range->value_max = INT_MAX;

  1500.         break;

  1501.     case AV_OPT_TYPE_RATIONAL:

  1502.         range->component_min = INT_MIN;

  1503.         range->component_max = INT_MAX;

  1504.         break;

  1505.     case AV_OPT_TYPE_IMAGE_SIZE:

  1506.         range->component_min = 0;

  1507.         range->component_max = INT_MAX/128/8;

  1508.         range->value_min = 0;

  1509.         range->value_max = INT_MAX/8;

  1510.         break;

  1511.     case AV_OPT_TYPE_VIDEO_RATE:

  1512.         range->component_min = 1;

  1513.         range->component_max = INT_MAX;

  1514.         range->value_min = 1;

  1515.         range->value_max = INT_MAX;

  1516.         break;

  1517.     default:

  1518.         ret = AVERROR(ENOSYS);

  1519.         goto fail;

  1520.     }

  1521. 

  1522.     *ranges_arg = ranges;

  1523.     return 0;

  1524. fail:

  1525.     av_free(ranges);

  1526.     av_free(range);

  1527.     av_free(range_array);

  1528.     return ret;

  1529. }

  1530. 

  1531. void av_opt_freep_ranges(AVOptionRanges **rangesp)

  1532. {

  1533.     int i;

  1534.     AVOptionRanges *ranges = *rangesp;

  1535. 

  1536.     for (i = 0; i < ranges->nb_ranges; i++) {

  1537.         AVOptionRange *range = ranges->range[i];

  1538.         av_freep(&range->str);

  1539.         av_freep(&ranges->range[i]);

  1540.     }

  1541.     av_freep(&ranges->range);

  1542.     av_freep(rangesp);

  1543. }

  1544. 

  1545. #ifdef TEST

  1546. 

  1547. typedef struct TestContext

  1548. {

  1549.     const AVClass *class;

  1550.     int num;

  1551.     int toggle;

  1552.     char *string;

  1553.     int flags;

  1554.     AVRational rational;

  1555.     AVRational video_rate;

  1556.     int w, h;

  1557.     enum AVPixelFormat pix_fmt;

  1558.     enum AVSampleFormat sample_fmt;

  1559.     int64_t duration;

  1560.     uint8_t color[4];

  1561.     int64_t channel_layout;

  1562. } TestContext;

  1563. 

  1564. #define OFFSET(x) offsetof(TestContext, x)

  1565. 

  1566. #define TEST_FLAG_COOL 01

  1567. #define TEST_FLAG_LAME 02

  1568. #define TEST_FLAG_MU   04

  1569. 

  1570. static const AVOption test_options[]= {

  1571. {"num",      "set num",        OFFSET(num),      AV_OPT_TYPE_INT,      {.i64 = 0},       0,        100                 },

  1572. {"toggle",   "set toggle",     OFFSET(toggle),   AV_OPT_TYPE_INT,      {.i64 = 0},       0,        1                   },

  1573. {"rational", "set rational",   OFFSET(rational), AV_OPT_TYPE_RATIONAL, {.dbl = 0},       0,        10                  },

  1574. {"string",   "set string",     OFFSET(string),   AV_OPT_TYPE_STRING,   {.str = "default"}, CHAR_MIN, CHAR_MAX          },

  1575. {"flags",    "set flags",      OFFSET(flags),    AV_OPT_TYPE_FLAGS,    {.i64 = 0},       0,        INT_MAX, 0, "flags" },

  1576. {"cool",     "set cool flag ", 0,                AV_OPT_TYPE_CONST,    {.i64 = TEST_FLAG_COOL}, INT_MIN,  INT_MAX, 0, "flags" },

  1577. {"lame",     "set lame flag ", 0,                AV_OPT_TYPE_CONST,    {.i64 = TEST_FLAG_LAME}, INT_MIN,  INT_MAX, 0, "flags" },

  1578. {"mu",       "set mu flag ",   0,                AV_OPT_TYPE_CONST,    {.i64 = TEST_FLAG_MU},   INT_MIN,  INT_MAX, 0, "flags" },

  1579. {"size",     "set size",       OFFSET(w),        AV_OPT_TYPE_IMAGE_SIZE,{0},             0,        0                   },

  1580. {"pix_fmt",  "set pixfmt",     OFFSET(pix_fmt),  AV_OPT_TYPE_PIXEL_FMT, {.i64 = AV_PIX_FMT_NONE}, -1, AV_PIX_FMT_NB-1},

  1581. {"sample_fmt", "set samplefmt", OFFSET(sample_fmt), AV_OPT_TYPE_SAMPLE_FMT, {.i64 = AV_SAMPLE_FMT_NONE}, -1, AV_SAMPLE_FMT_NB-1},

  1582. {"video_rate", "set videorate", OFFSET(video_rate), AV_OPT_TYPE_VIDEO_RATE,  {.str = "25"}, 0,     0                   },

  1583. {"duration", "set duration",   OFFSET(duration), AV_OPT_TYPE_DURATION, {.i64 = 0}, 0, INT64_MAX},

  1584. {"color", "set color",   OFFSET(color), AV_OPT_TYPE_COLOR, {.str = "pink"}, 0, 0},

  1585. {"cl", "set channel layout", OFFSET(channel_layout), AV_OPT_TYPE_CHANNEL_LAYOUT, {.i64 = AV_CH_LAYOUT_HEXAGONAL}, 0, INT64_MAX},

  1586. {NULL},

  1587. };

  1588. 

  1589. static const char *test_get_name(void *ctx)

  1590. {

  1591.     return "test";

  1592. }

  1593. 

  1594. static const AVClass test_class = {

  1595.     "TestContext",

  1596.     test_get_name,

  1597.     test_options

  1598. };

  1599. 

  1600. int main(void)

  1601. {

  1602.     int i;

  1603. 

  1604.     printf("\nTesting av_set_options_string()\n");

  1605.     {

  1606.         TestContext test_ctx = { 0 };

  1607.         static const char * const options[] = {

  1608.             "",

  1609.             ":",

  1610.             "=",

  1611.             "foo=:",

  1612.             ":=foo",

  1613.             "=foo",

  1614.             "foo=",

  1615.             "foo",

  1616.             "foo=val",

  1617.             "foo==val",

  1618.             "toggle=:",

  1619.             "string=:",

  1620.             "toggle=1 : foo",

  1621.             "toggle=100",

  1622.             "toggle==1",

  1623.             "flags=+mu-lame : num=42: toggle=0",

  1624.             "num=42 : string=blahblah",

  1625.             "rational=0 : rational=1/2 : rational=1/-1",

  1626.             "rational=-1/0",

  1627.             "size=1024x768",

  1628.             "size=pal",

  1629.             "size=bogus",

  1630.             "pix_fmt=yuv420p",

  1631.             "pix_fmt=2",

  1632.             "pix_fmt=bogus",

  1633.             "sample_fmt=s16",

  1634.             "sample_fmt=2",

  1635.             "sample_fmt=bogus",

  1636.             "video_rate=pal",

  1637.             "video_rate=25",

  1638.             "video_rate=30000/1001",

  1639.             "video_rate=30/1.001",

  1640.             "video_rate=bogus",

  1641.             "duration=bogus",

  1642.             "duration=123.45",

  1643.             "duration=1\\:23\\:45.67",

  1644.             "color=blue",

  1645.             "color=0x223300",

  1646.             "color=0x42FF07AA",

  1647.             "cl=stereo+downmix",

  1648.             "cl=foo",

  1649.         };

  1650. 

  1651.         test_ctx.class = &test_class;

  1652.         av_opt_set_defaults(&test_ctx);

  1653. 

  1654.         av_log_set_level(AV_LOG_DEBUG);

  1655. 

  1656.         for (i=0; i < FF_ARRAY_ELEMS(options); i++) {

  1657.             av_log(&test_ctx, AV_LOG_DEBUG, "Setting options string '%s'\n", options[i]);

  1658.             if (av_set_options_string(&test_ctx, options[i], "=", ":") < 0)

  1659.                 av_log(&test_ctx, AV_LOG_ERROR, "Error setting options string: '%s'\n", options[i]);

  1660.             printf("\n");

  1661.         }

  1662.         av_opt_free(&test_ctx);

  1663.     }

  1664. 

  1665.     printf("\nTesting av_opt_set_from_string()\n");

  1666.     {

  1667.         TestContext test_ctx = { 0 };

  1668.         static const char * const options[] = {

  1669.             "",

  1670.             "5",

  1671.             "5:hello",

  1672.             "5:hello:size=pal",

  1673.             "5:size=pal:hello",

  1674.             ":",

  1675.             "=",

  1676.             " 5 : hello : size = pal ",

  1677.             "a_very_long_option_name_that_will_need_to_be_ellipsized_around_here=42"

  1678.         };

  1679.         static const char * const shorthand[] = { "num", "string", NULL };

  1680. 

  1681.         test_ctx.class = &test_class;

  1682.         av_opt_set_defaults(&test_ctx);

  1683. 

  1684.         av_log_set_level(AV_LOG_DEBUG);

  1685. 

  1686.         for (i=0; i < FF_ARRAY_ELEMS(options); i++) {

  1687.             av_log(&test_ctx, AV_LOG_DEBUG, "Setting options string '%s'\n", options[i]);

  1688.             if (av_opt_set_from_string(&test_ctx, options[i], shorthand, "=", ":") < 0)

  1689.                 av_log(&test_ctx, AV_LOG_ERROR, "Error setting options string: '%s'\n", options[i]);

  1690.             printf("\n");

  1691.         }

  1692.         av_opt_free(&test_ctx);

  1693.     }

  1694. 

  1695.     return 0;

  1696. }

  1697. 

  1698. #endif