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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.     int num, den;

  199.     char c;

  200. 

  201.     if (sscanf(val, "%d%*1[:/]%d%c", &num, &den, &c) == 2) {

  202.         if ((ret = write_number(obj, o, dst, 1, den, num)) >= 0)

  203.             return ret;

  204.         ret = 0;

  205.     }

  206. 

  207.     for (;;) {

  208.         int i, den = 1;

  209.         char buf[256];

  210.         int cmd = 0;

  211.         double d, num = 1;

  212.         int64_t intnum = 1;

  213. 

  214.         i = 0;

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

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

  217.                 cmd = *(val++);

  218.             else if (!notfirst)

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

  220.         }

  221. 

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

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

  224.         buf[i] = 0;

  225. 

  226.         {

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

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

  229.                 d = DEFAULT_NUMVAL(o_named);

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

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

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

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

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

  235.             else {

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

  237.                 if (res < 0) {

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

  239.                     return res;

  240.                 }

  241.             }

  242.         }

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

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

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

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

  247.         } else {

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

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

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

  251.         }

  252. 

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

  254.             return ret;

  255.         val += i;

  256.         if (!*val)

  257.             return 0;

  258.         notfirst = 1;

  259.     }

  260. 

  261.     return 0;

  262. }

  263. 

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

  265. {

  266.     int ret;

  267. 

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

  269.         dst[0] =

  270.         dst[1] = 0;

  271.         return 0;

  272.     }

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

  274.     if (ret < 0)

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

  276.     return ret;

  277. }

  278. 

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

  280. {

  281.     int ret;

  282.     if (!val) {

  283.         ret = AVERROR(EINVAL);

  284.     } else {

  285.         ret = av_parse_video_rate(dst, val);

  286.     }

  287.     if (ret < 0)

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

  289.     return ret;

  290. }

  291. 

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

  293. {

  294.     int ret;

  295. 

  296.     if (!val) {

  297.         return 0;

  298.     } else {

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

  300.         if (ret < 0)

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

  302.         return ret;

  303.     }

  304.     return 0;

  305. }

  306. 

  307. static int set_string_fmt(void *obj, const AVOption *o, const char *val, uint8_t *dst,

  308.                           int fmt_nb, int ((*get_fmt)(const char *)), const char *desc)

  309. {

  310.     int fmt, min, max;

  311. 

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

  313.         fmt = -1;

  314.     } else {

  315.         fmt = get_fmt(val);

  316.         if (fmt == -1) {

  317.             char *tail;

  318.             fmt = strtol(val, &tail, 0);

  319.             if (*tail || (unsigned)fmt >= fmt_nb) {

  320.                 av_log(obj, AV_LOG_ERROR,

  321.                        "Unable to parse option value \"%s\" as %s\n", val, desc);

  322.                 return AVERROR(EINVAL);

  323.             }

  324.         }

  325.     }

  326. 

  327.     min = FFMAX(o->min, -1);

  328.     max = FFMIN(o->max, fmt_nb-1);

  329. 

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

  331.         av_log(obj, AV_LOG_ERROR,

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

  333.                fmt, o->name, desc, min, max);

  334.         return AVERROR(ERANGE);

  335.     }

  336. 

  337.     *(int *)dst = fmt;

  338.     return 0;

  339. }

  340. 

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

  342. {

  343.     return set_string_fmt(obj, o, val, dst,

  344.                           AV_PIX_FMT_NB, av_get_pix_fmt, "pixel format");

  345. }

  346. 

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

  348. {

  349.     return set_string_fmt(obj, o, val, dst,

  350.                           AV_SAMPLE_FMT_NB, av_get_sample_fmt, "sample format");

  351. }

  352. 

  353. #if FF_API_OLD_AVOPTIONS

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

  355. {

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

  357.     if (o_out)

  358.         *o_out = o;

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

  360. }

  361. #endif

  362. 

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

  364. {

  365.     int ret = 0;

  366.     void *dst, *target_obj;

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

  368.     if (!o || !target_obj)

  369.         return AVERROR_OPTION_NOT_FOUND;

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

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

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

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

  374.                  o->type != AV_OPT_TYPE_CHANNEL_LAYOUT))

  375.         return AVERROR(EINVAL);

  376. 

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

  378.     switch (o->type) {

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

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

  381.     case AV_OPT_TYPE_FLAGS:

  382.     case AV_OPT_TYPE_INT:

  383.     case AV_OPT_TYPE_INT64:

  384.     case AV_OPT_TYPE_FLOAT:

  385.     case AV_OPT_TYPE_DOUBLE:

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

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

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

  389.     case AV_OPT_TYPE_PIXEL_FMT:  return set_string_pixel_fmt(obj, o, val, dst);

  390.     case AV_OPT_TYPE_SAMPLE_FMT: return set_string_sample_fmt(obj, o, val, dst);

  391.     case AV_OPT_TYPE_DURATION:

  392.         if (!val) {

  393.             *(int64_t *)dst = 0;

  394.             return 0;

  395.         } else {

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

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

  398.             return ret;

  399.         }

  400.         break;

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

  402.     case AV_OPT_TYPE_CHANNEL_LAYOUT:

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

  404.             *(int64_t *)dst = 0;

  405.         } else {

  406. #if FF_API_GET_CHANNEL_LAYOUT_COMPAT

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

  408. #else

  409.             int64_t cl = av_get_channel_layout(val);

  410. #endif

  411.             if (!cl) {

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

  413.                 ret = AVERROR(EINVAL);

  414.             }

  415.             *(int64_t *)dst = cl;

  416.             return ret;

  417.         }

  418.         break;

  419.     }

  420. 

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

  422.     return AVERROR(EINVAL);

  423. }

  424. 

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

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

  427.     {\

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

  429.             return AVERROR(EINVAL);\

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

  431.     }

  432. 

  433. OPT_EVAL_NUMBER(flags,  AV_OPT_TYPE_FLAGS,    int)

  434. OPT_EVAL_NUMBER(int,    AV_OPT_TYPE_INT,      int)

  435. OPT_EVAL_NUMBER(int64,  AV_OPT_TYPE_INT64,    int64_t)

  436. OPT_EVAL_NUMBER(float,  AV_OPT_TYPE_FLOAT,    float)

  437. OPT_EVAL_NUMBER(double, AV_OPT_TYPE_DOUBLE,   double)

  438. OPT_EVAL_NUMBER(q,      AV_OPT_TYPE_RATIONAL, AVRational)

  439. 

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

  441.                                   int search_flags)

  442. {

  443.     void *dst, *target_obj;

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

  445. 

  446.     if (!o || !target_obj)

  447.         return AVERROR_OPTION_NOT_FOUND;

  448. 

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

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

  451. }

  452. 

  453. #if FF_API_OLD_AVOPTIONS

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

  455. {

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

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

  458.         return NULL;

  459.     return o;

  460. }

  461. 

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

  463. {

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

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

  466.         return NULL;

  467.     return o;

  468. }

  469. 

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

  471. {

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

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

  474.         return NULL;

  475.     return o;

  476. }

  477. #endif

  478. 

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

  480. {

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

  482. }

  483. 

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

  485. {

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

  487. }

  488. 

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

  490. {

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

  492. }

  493. 

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

  495. {

  496.     void *target_obj;

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

  498.     uint8_t *ptr;

  499.     uint8_t **dst;

  500.     int *lendst;

  501. 

  502.     if (!o || !target_obj)

  503.         return AVERROR_OPTION_NOT_FOUND;

  504. 

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

  506.         return AVERROR(EINVAL);

  507. 

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

  509.     if (len && !ptr)

  510.         return AVERROR(ENOMEM);

  511. 

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

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

  514. 

  515.     av_free(*dst);

  516.     *dst = ptr;

  517.     *lendst = len;

  518.     if (len)

  519.         memcpy(ptr, val, len);

  520. 

  521.     return 0;

  522. }

  523. 

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

  525. {

  526.     void *target_obj;

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

  528. 

  529.     if (!o || !target_obj)

  530.         return AVERROR_OPTION_NOT_FOUND;

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

  532.         av_log(obj, AV_LOG_ERROR,

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

  534.         return AVERROR(EINVAL);

  535.     }

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

  537.         av_log(obj, AV_LOG_ERROR,

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

  539.         return AVERROR(EINVAL);

  540.     }

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

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

  543.     return 0;

  544. }

  545. 

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

  547. {

  548.     void *target_obj;

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

  550. 

  551.     if (!o || !target_obj)

  552.         return AVERROR_OPTION_NOT_FOUND;

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

  554.         av_log(obj, AV_LOG_ERROR,

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

  556.         return AVERROR(EINVAL);

  557.     }

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

  559.         return AVERROR(EINVAL);

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

  561. }

  562. 

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

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

  565. {

  566.     void *target_obj;

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

  568.                                      search_flags, &target_obj);

  569.     int min, max;

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

  571. 

  572.     if (!o || !target_obj)

  573.         return AVERROR_OPTION_NOT_FOUND;

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

  575.         av_log(obj, AV_LOG_ERROR,

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

  577.         return AVERROR(EINVAL);

  578.     }

  579. 

  580. #if LIBAVUTIL_VERSION_MAJOR < 54

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

  582.         min = -1;

  583.         max = nb_fmts-1;

  584.     } else

  585. #endif

  586.     {

  587.         min = FFMAX(o->min, -1);

  588.         max = FFMIN(o->max, nb_fmts-1);

  589.     }

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

  591.         av_log(obj, AV_LOG_ERROR,

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

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

  594.         return AVERROR(ERANGE);

  595.     }

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

  597.     return 0;

  598. }

  599. 

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

  601. {

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

  603. }

  604. 

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

  606. {

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

  608. }

  609. 

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

  611. {

  612.     void *target_obj;

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

  614. 

  615.     if (!o || !target_obj)

  616.         return AVERROR_OPTION_NOT_FOUND;

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

  618.         av_log(obj, AV_LOG_ERROR,

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

  620.         return AVERROR(EINVAL);

  621.     }

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

  623.     return 0;

  624. }

  625. 

  626. #if FF_API_OLD_AVOPTIONS

  627. /**

  628.  *

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

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

  631.  */

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

  633. {

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

  635.     void *dst;

  636.     uint8_t *bin;

  637.     int len, i;

  638.     if (!o)

  639.         return NULL;

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

  641.         return NULL;

  642. 

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

  644.     if (o_out) *o_out= o;

  645. 

  646.     switch (o->type) {

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

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

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

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

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

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

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

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

  655.     case AV_OPT_TYPE_BINARY:

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

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

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

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

  660.         break;

  661.     default: return NULL;

  662.     }

  663.     return buf;

  664. }

  665. #endif

  666. 

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

  668. {

  669.     void *dst, *target_obj;

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

  671.     uint8_t *bin, buf[128];

  672.     int len, i, ret;

  673.     int64_t i64;

  674. 

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

  676.         return AVERROR_OPTION_NOT_FOUND;

  677. 

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

  679. 

  680.     buf[0] = 0;

  681.     switch (o->type) {

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

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

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

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

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

  687.     case AV_OPT_TYPE_VIDEO_RATE:

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

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

  690.     case AV_OPT_TYPE_STRING:

  691.         if (*(uint8_t**)dst)

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

  693.         else

  694.             *out_val = av_strdup("");

  695.         return 0;

  696.     case AV_OPT_TYPE_BINARY:

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

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

  699.             return AVERROR(EINVAL);

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

  701.             return AVERROR(ENOMEM);

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

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

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

  705.         return 0;

  706.     case AV_OPT_TYPE_IMAGE_SIZE:

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

  708.         break;

  709.     case AV_OPT_TYPE_PIXEL_FMT:

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

  711.         break;

  712.     case AV_OPT_TYPE_SAMPLE_FMT:

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

  714.         break;

  715.     case AV_OPT_TYPE_DURATION:

  716.         i64 = *(int64_t *)dst;

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

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

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

  720.         break;

  721.     case AV_OPT_TYPE_COLOR:

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

  723.         break;

  724.     case AV_OPT_TYPE_CHANNEL_LAYOUT:

  725.         i64 = *(int64_t *)dst;

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

  727.         break;

  728.     default:

  729.         return AVERROR(EINVAL);

  730.     }

  731. 

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

  733.         return AVERROR(EINVAL);

  734.     *out_val = av_strdup(buf);

  735.     return 0;

  736. }

  737. 

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

  739.                       int search_flags)

  740. {

  741.     void *dst, *target_obj;

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

  743.     if (!o || !target_obj)

  744.         goto error;

  745. 

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

  747. 

  748.     if (o_out) *o_out= o;

  749. 

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

  751. 

  752. error:

  753.     *den=*intnum=0;

  754.     return -1;

  755. }

  756. 

  757. #if FF_API_OLD_AVOPTIONS

  758. double av_get_double(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 NAN;

  766.     return num*intnum/den;

  767. }

  768. 

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

  770. {

  771.     int64_t intnum=1;

  772.     double num=1;

  773.     int den=1;

  774. 

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

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

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

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

  779.     else

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

  781. }

  782. 

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

  784. {

  785.     int64_t intnum=1;

  786.     double num=1;

  787.     int den=1;

  788. 

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

  790.         return -1;

  791.     return num*intnum/den;

  792. }

  793. #endif

  794. 

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

  796. {

  797.     int64_t intnum = 1;

  798.     double     num = 1;

  799.     int   ret, den = 1;

  800. 

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

  802.         return ret;

  803.     *out_val = num*intnum/den;

  804.     return 0;

  805. }

  806. 

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

  808. {

  809.     int64_t intnum = 1;

  810.     double     num = 1;

  811.     int   ret, den = 1;

  812. 

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

  814.         return ret;

  815.     *out_val = num*intnum/den;

  816.     return 0;

  817. }

  818. 

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

  820. {

  821.     int64_t intnum = 1;

  822.     double     num = 1;

  823.     int   ret, den = 1;

  824. 

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

  826.         return ret;

  827. 

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

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

  830.     else

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

  832.     return 0;

  833. }

  834. 

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

  836. {

  837.     void *dst, *target_obj;

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

  839.     if (!o || !target_obj)

  840.         return AVERROR_OPTION_NOT_FOUND;

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

  842.         av_log(obj, AV_LOG_ERROR,

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

  844.         return AVERROR(EINVAL);

  845.     }

  846. 

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

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

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

  850.     return 0;

  851. }

  852. 

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

  854. {

  855.     int64_t intnum = 1;

  856.     double     num = 1;

  857.     int   ret, den = 1;

  858. 

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

  860.         return ret;

  861. 

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

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

  864.     else

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

  866.     return 0;

  867. }

  868. 

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

  870.                       enum AVOptionType type, const char *desc)

  871. {

  872.     void *dst, *target_obj;

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

  874.     if (!o || !target_obj)

  875.         return AVERROR_OPTION_NOT_FOUND;

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

  877.         av_log(obj, AV_LOG_ERROR,

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

  879.         return AVERROR(EINVAL);

  880.     }

  881. 

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

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

  884.     return 0;

  885. }

  886. 

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

  888. {

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

  890. }

  891. 

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

  893. {

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

  895. }

  896. 

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

  898. {

  899.     void *dst, *target_obj;

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

  901.     if (!o || !target_obj)

  902.         return AVERROR_OPTION_NOT_FOUND;

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

  904.         av_log(obj, AV_LOG_ERROR,

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

  906.         return AVERROR(EINVAL);

  907.     }

  908. 

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

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

  911.     return 0;

  912. }

  913. 

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

  915. {

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

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

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

  919.     int64_t res;

  920. 

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

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

  923.         return 0;

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

  925. }

  926. 

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

  928. {

  929.     if      (d == INT_MAX) {

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

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

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

  933.     } else if (d == UINT32_MAX) {

  934.         av_log(av_log_obj, level, "UINT32_MAX");

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

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

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

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

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

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

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

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

  943.     } else if (d == -FLT_MAX) {

  944.         av_log(av_log_obj, level, "-FLT_MAX");

  945.     } else if (d == -FLT_MIN) {

  946.         av_log(av_log_obj, level, "-FLT_MIN");

  947.     } else if (d == DBL_MAX) {

  948.         av_log(av_log_obj, level, "DBL_MAX");

  949.     } else if (d == DBL_MIN) {

  950.         av_log(av_log_obj, level, "DBL_MIN");

  951.     } else if (d == -DBL_MAX) {

  952.         av_log(av_log_obj, level, "-DBL_MAX");

  953.     } else if (d == -DBL_MIN) {

  954.         av_log(av_log_obj, level, "-DBL_MIN");

  955.     } else {

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

  957.     }

  958. }

  959. 

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

  961.                      int req_flags, int rej_flags)

  962. {

  963.     const AVOption *opt=NULL;

  964.     AVOptionRanges *r;

  965.     int i;

  966. 

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

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

  969.             continue;

  970. 

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

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

  973.          * Only print items from the requested unit.

  974.          */

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

  976.             continue;

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

  978.             continue;

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

  980.             continue;

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

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

  983.         else

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

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

  986.                    opt->name);

  987. 

  988.         switch (opt->type) {

  989.             case AV_OPT_TYPE_FLAGS:

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

  991.                 break;

  992.             case AV_OPT_TYPE_INT:

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

  994.                 break;

  995.             case AV_OPT_TYPE_INT64:

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

  997.                 break;

  998.             case AV_OPT_TYPE_DOUBLE:

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

  1000.                 break;

  1001.             case AV_OPT_TYPE_FLOAT:

  1002.                 av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<float>");

  1003.                 break;

  1004.             case AV_OPT_TYPE_STRING:

  1005.                 av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<string>");

  1006.                 break;

  1007.             case AV_OPT_TYPE_RATIONAL:

  1008.                 av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<rational>");

  1009.                 break;

  1010.             case AV_OPT_TYPE_BINARY:

  1011.                 av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<binary>");

  1012.                 break;

  1013.             case AV_OPT_TYPE_IMAGE_SIZE:

  1014.                 av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<image_size>");

  1015.                 break;

  1016.             case AV_OPT_TYPE_VIDEO_RATE:

  1017.                 av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<video_rate>");

  1018.                 break;

  1019.             case AV_OPT_TYPE_PIXEL_FMT:

  1020.                 av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<pix_fmt>");

  1021.                 break;

  1022.             case AV_OPT_TYPE_SAMPLE_FMT:

  1023.                 av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<sample_fmt>");

  1024.                 break;

  1025.             case AV_OPT_TYPE_DURATION:

  1026.                 av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<duration>");

  1027.                 break;

  1028.             case AV_OPT_TYPE_COLOR:

  1029.                 av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<color>");

  1030.                 break;

  1031.             case AV_OPT_TYPE_CHANNEL_LAYOUT:

  1032.                 av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<channel_layout>");

  1033.                 break;

  1034.             case AV_OPT_TYPE_CONST:

  1035.             default:

  1036.                 av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "");

  1037.                 break;

  1038.         }

  1039.         av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_ENCODING_PARAM) ? 'E' : '.');

  1040.         av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_DECODING_PARAM) ? 'D' : '.');

  1041.         av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_FILTERING_PARAM)? 'F' : '.');

  1042.         av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_VIDEO_PARAM   ) ? 'V' : '.');

  1043.         av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_AUDIO_PARAM   ) ? 'A' : '.');

  1044.         av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_SUBTITLE_PARAM) ? 'S' : '.');

  1045. 

  1046.         if (opt->help)

  1047.             av_log(av_log_obj, AV_LOG_INFO, " %s", opt->help);

  1048. 

  1049.         if (av_opt_query_ranges(&r, obj, opt->name, AV_OPT_SEARCH_FAKE_OBJ) >= 0) {

  1050.             switch (opt->type) {

  1051.             case AV_OPT_TYPE_INT:

  1052.             case AV_OPT_TYPE_INT64:

  1053.             case AV_OPT_TYPE_DOUBLE:

  1054.             case AV_OPT_TYPE_FLOAT:

  1055.             case AV_OPT_TYPE_RATIONAL:

  1056.                 for (i = 0; i < r->nb_ranges; i++) {

  1057.                     av_log(av_log_obj, AV_LOG_INFO, " (from ");

  1058.                     log_value(av_log_obj, AV_LOG_INFO, r->range[i]->value_min);

  1059.                     av_log(av_log_obj, AV_LOG_INFO, " to ");

  1060.                     log_value(av_log_obj, AV_LOG_INFO, r->range[i]->value_max);

  1061.                     av_log(av_log_obj, AV_LOG_INFO, ")");

  1062.                 }

  1063.                 break;

  1064.             }

  1065.             av_opt_freep_ranges(&r);

  1066.         }

  1067. 

  1068.         if (opt->type != AV_OPT_TYPE_CONST  &&

  1069.             opt->type != AV_OPT_TYPE_BINARY &&

  1070.                 !((opt->type == AV_OPT_TYPE_COLOR      ||

  1071.                    opt->type == AV_OPT_TYPE_IMAGE_SIZE ||

  1072.                    opt->type == AV_OPT_TYPE_STRING     ||

  1073.                    opt->type == AV_OPT_TYPE_VIDEO_RATE) &&

  1074.                   !opt->default_val.str)) {

  1075.             av_log(av_log_obj, AV_LOG_INFO, " (default ");

  1076.             switch (opt->type) {

  1077.             case AV_OPT_TYPE_FLAGS:

  1078.                 av_log(av_log_obj, AV_LOG_INFO, "%"PRIX64, opt->default_val.i64);

  1079.                 break;

  1080.             case AV_OPT_TYPE_DURATION:

  1081.             case AV_OPT_TYPE_INT:

  1082.             case AV_OPT_TYPE_INT64:

  1083.                 log_value(av_log_obj, AV_LOG_INFO, opt->default_val.i64);

  1084.                 break;

  1085.             case AV_OPT_TYPE_DOUBLE:

  1086.             case AV_OPT_TYPE_FLOAT:

  1087.                 log_value(av_log_obj, AV_LOG_INFO, opt->default_val.dbl);

  1088.                 break;

  1089.             case AV_OPT_TYPE_RATIONAL: {

  1090.                 AVRational q = av_d2q(opt->default_val.dbl, INT_MAX);

  1091.                 av_log(av_log_obj, AV_LOG_INFO, "%d/%d", q.num, q.den); }

  1092.                 break;

  1093.             case AV_OPT_TYPE_PIXEL_FMT:

  1094.                 av_log(av_log_obj, AV_LOG_INFO, "%s", (char *)av_x_if_null(av_get_pix_fmt_name(opt->default_val.i64), "none"));

  1095.                 break;

  1096.             case AV_OPT_TYPE_SAMPLE_FMT:

  1097.                 av_log(av_log_obj, AV_LOG_INFO, "%s", (char *)av_x_if_null(av_get_sample_fmt_name(opt->default_val.i64), "none"));

  1098.                 break;

  1099.             case AV_OPT_TYPE_COLOR:

  1100.             case AV_OPT_TYPE_IMAGE_SIZE:

  1101.             case AV_OPT_TYPE_STRING:

  1102.             case AV_OPT_TYPE_VIDEO_RATE:

  1103.                 av_log(av_log_obj, AV_LOG_INFO, "\"%s\"", opt->default_val.str);

  1104.                 break;

  1105.             case AV_OPT_TYPE_CHANNEL_LAYOUT:

  1106.                 av_log(av_log_obj, AV_LOG_INFO, "0x%"PRIx64, opt->default_val.i64);

  1107.                 break;

  1108.             }

  1109.             av_log(av_log_obj, AV_LOG_INFO, ")");

  1110.         }

  1111. 

  1112.         av_log(av_log_obj, AV_LOG_INFO, "\n");

  1113.         if (opt->unit && opt->type != AV_OPT_TYPE_CONST) {

  1114.             opt_list(obj, av_log_obj, opt->unit, req_flags, rej_flags);

  1115.         }

  1116.     }

  1117. }

  1118. 

  1119. int av_opt_show2(void *obj, void *av_log_obj, int req_flags, int rej_flags)

  1120. {

  1121.     if (!obj)

  1122.         return -1;

  1123. 

  1124.     av_log(av_log_obj, AV_LOG_INFO, "%s AVOptions:\n", (*(AVClass**)obj)->class_name);

  1125. 

  1126.     opt_list(obj, av_log_obj, NULL, req_flags, rej_flags);

  1127. 

  1128.     return 0;

  1129. }

  1130. 

  1131. void av_opt_set_defaults(void *s)

  1132. {

  1133. #if FF_API_OLD_AVOPTIONS

  1134.     av_opt_set_defaults2(s, 0, 0);

  1135. }

  1136. 

  1137. void av_opt_set_defaults2(void *s, int mask, int flags)

  1138. {

  1139. #endif

  1140.     const AVClass *class = *(AVClass **)s;

  1141.     const AVOption *opt = NULL;

  1142.     while ((opt = av_opt_next(s, opt)) != NULL) {

  1143.         void *dst = ((uint8_t*)s) + opt->offset;

  1144. #if FF_API_OLD_AVOPTIONS

  1145.         if ((opt->flags & mask) != flags)

  1146.             continue;

  1147. #endif

  1148.         switch (opt->type) {

  1149.             case AV_OPT_TYPE_CONST:

  1150.                 /* Nothing to be done here */

  1151.             break;

  1152.             case AV_OPT_TYPE_FLAGS:

  1153.             case AV_OPT_TYPE_INT:

  1154.             case AV_OPT_TYPE_INT64:

  1155.             case AV_OPT_TYPE_DURATION:

  1156.             case AV_OPT_TYPE_CHANNEL_LAYOUT:

  1157.                 write_number(s, opt, dst, 1, 1, opt->default_val.i64);

  1158.             break;

  1159.             case AV_OPT_TYPE_DOUBLE:

  1160.             case AV_OPT_TYPE_FLOAT: {

  1161.                 double val;

  1162.                 val = opt->default_val.dbl;

  1163.                 write_number(s, opt, dst, val, 1, 1);

  1164.             }

  1165.             break;

  1166.             case AV_OPT_TYPE_RATIONAL: {

  1167.                 AVRational val;

  1168.                 val = av_d2q(opt->default_val.dbl, INT_MAX);

  1169.                 write_number(s, opt, dst, 1, val.den, val.num);

  1170.             }

  1171.             break;

  1172.             case AV_OPT_TYPE_COLOR:

  1173.                 set_string_color(s, opt, opt->default_val.str, dst);

  1174.                 break;

  1175.             case AV_OPT_TYPE_STRING:

  1176.                 set_string(s, opt, opt->default_val.str, dst);

  1177.                 break;

  1178.             case AV_OPT_TYPE_IMAGE_SIZE:

  1179.                 set_string_image_size(s, opt, opt->default_val.str, dst);

  1180.                 break;

  1181.             case AV_OPT_TYPE_VIDEO_RATE:

  1182.                 set_string_video_rate(s, opt, opt->default_val.str, dst);

  1183.                 break;

  1184.             case AV_OPT_TYPE_PIXEL_FMT:

  1185. #if LIBAVUTIL_VERSION_MAJOR < 54

  1186.                 if (class->version && class->version < AV_VERSION_INT(52, 10, 100))

  1187.                     av_opt_set(s, opt->name, opt->default_val.str, 0);

  1188.                 else

  1189. #endif

  1190.                     write_number(s, opt, dst, 1, 1, opt->default_val.i64);

  1191.                 break;

  1192.             case AV_OPT_TYPE_SAMPLE_FMT:

  1193. #if LIBAVUTIL_VERSION_MAJOR < 54

  1194.                 if (class->version && class->version < AV_VERSION_INT(52, 10, 100))

  1195.                     av_opt_set(s, opt->name, opt->default_val.str, 0);

  1196.                 else

  1197. #endif

  1198.                     write_number(s, opt, dst, 1, 1, opt->default_val.i64);

  1199.                 break;

  1200.             case AV_OPT_TYPE_BINARY:

  1201.                 /* Cannot set default for binary */

  1202.             break;

  1203.             default:

  1204.                 av_log(s, AV_LOG_DEBUG, "AVOption type %d of option %s not implemented yet\n", opt->type, opt->name);

  1205.         }

  1206.     }

  1207. }

  1208. 

  1209. /**

  1210.  * Store the value in the field in ctx that is named like key.

  1211.  * ctx must be an AVClass context, storing is done using AVOptions.

  1212.  *

  1213.  * @param buf the string to parse, buf will be updated to point at the

  1214.  * separator just after the parsed key/value pair

  1215.  * @param key_val_sep a 0-terminated list of characters used to

  1216.  * separate key from value

  1217.  * @param pairs_sep a 0-terminated list of characters used to separate

  1218.  * two pairs from each other

  1219.  * @return 0 if the key/value pair has been successfully parsed and

  1220.  * set, or a negative value corresponding to an AVERROR code in case

  1221.  * of error:

  1222.  * AVERROR(EINVAL) if the key/value pair cannot be parsed,

  1223.  * the error code issued by av_opt_set() if the key/value pair

  1224.  * cannot be set

  1225.  */

  1226. static int parse_key_value_pair(void *ctx, const char **buf,

  1227.                                 const char *key_val_sep, const char *pairs_sep)

  1228. {

  1229.     char *key = av_get_token(buf, key_val_sep);

  1230.     char *val;

  1231.     int ret;

  1232. 

  1233.     if (!key)

  1234.         return AVERROR(ENOMEM);

  1235. 

  1236.     if (*key && strspn(*buf, key_val_sep)) {

  1237.         (*buf)++;

  1238.         val = av_get_token(buf, pairs_sep);

  1239.         if (!val) {

  1240.             av_freep(&key);

  1241.             return AVERROR(ENOMEM);

  1242.         }

  1243.     } else {

  1244.         av_log(ctx, AV_LOG_ERROR, "Missing key or no key/value separator found after key '%s'\n", key);

  1245.         av_free(key);

  1246.         return AVERROR(EINVAL);

  1247.     }

  1248. 

  1249.     av_log(ctx, AV_LOG_DEBUG, "Setting entry with key '%s' to value '%s'\n", key, val);

  1250. 

  1251.     ret = av_opt_set(ctx, key, val, AV_OPT_SEARCH_CHILDREN);

  1252.     if (ret == AVERROR_OPTION_NOT_FOUND)

  1253.         av_log(ctx, AV_LOG_ERROR, "Key '%s' not found.\n", key);

  1254. 

  1255.     av_free(key);

  1256.     av_free(val);

  1257.     return ret;

  1258. }

  1259. 

  1260. int av_set_options_string(void *ctx, const char *opts,

  1261.                           const char *key_val_sep, const char *pairs_sep)

  1262. {

  1263.     int ret, count = 0;

  1264. 

  1265.     if (!opts)

  1266.         return 0;

  1267. 

  1268.     while (*opts) {

  1269.         if ((ret = parse_key_value_pair(ctx, &opts, key_val_sep, pairs_sep)) < 0)

  1270.             return ret;

  1271.         count++;

  1272. 

  1273.         if (*opts)

  1274.             opts++;

  1275.     }

  1276. 

  1277.     return count;

  1278. }

  1279. 

  1280. #define WHITESPACES " \n\t"

  1281. 

  1282. static int is_key_char(char c)

  1283. {

  1284.     return (unsigned)((c | 32) - 'a') < 26 ||

  1285.            (unsigned)(c - '0') < 10 ||

  1286.            c == '-' || c == '_' || c == '/' || c == '.';

  1287. }

  1288. 

  1289. /**

  1290.  * Read a key from a string.

  1291.  *

  1292.  * The key consists of is_key_char characters and must be terminated by a

  1293.  * character from the delim string; spaces are ignored.

  1294.  *

  1295.  * @return  0 for success (even with ellipsis), <0 for failure

  1296.  */

  1297. static int get_key(const char **ropts, const char *delim, char **rkey)

  1298. {

  1299.     const char *opts = *ropts;

  1300.     const char *key_start, *key_end;

  1301. 

  1302.     key_start = opts += strspn(opts, WHITESPACES);

  1303.     while (is_key_char(*opts))

  1304.         opts++;

  1305.     key_end = opts;

  1306.     opts += strspn(opts, WHITESPACES);

  1307.     if (!*opts || !strchr(delim, *opts))

  1308.         return AVERROR(EINVAL);

  1309.     opts++;

  1310.     if (!(*rkey = av_malloc(key_end - key_start + 1)))

  1311.         return AVERROR(ENOMEM);

  1312.     memcpy(*rkey, key_start, key_end - key_start);

  1313.     (*rkey)[key_end - key_start] = 0;

  1314.     *ropts = opts;

  1315.     return 0;

  1316. }

  1317. 

  1318. int av_opt_get_key_value(const char **ropts,

  1319.                          const char *key_val_sep, const char *pairs_sep,

  1320.                          unsigned flags,

  1321.                          char **rkey, char **rval)

  1322. {

  1323.     int ret;

  1324.     char *key = NULL, *val;

  1325.     const char *opts = *ropts;

  1326. 

  1327.     if ((ret = get_key(&opts, key_val_sep, &key)) < 0 &&

  1328.         !(flags & AV_OPT_FLAG_IMPLICIT_KEY))

  1329.         return AVERROR(EINVAL);

  1330.     if (!(val = av_get_token(&opts, pairs_sep))) {

  1331.         av_free(key);

  1332.         return AVERROR(ENOMEM);

  1333.     }

  1334.     *ropts = opts;

  1335.     *rkey  = key;

  1336.     *rval  = val;

  1337.     return 0;

  1338. }

  1339. 

  1340. int av_opt_set_from_string(void *ctx, const char *opts,

  1341.                            const char *const *shorthand,

  1342.                            const char *key_val_sep, const char *pairs_sep)

  1343. {

  1344.     int ret, count = 0;

  1345.     const char *dummy_shorthand = NULL;

  1346.     char *av_uninit(parsed_key), *av_uninit(value);

  1347.     const char *key;

  1348. 

  1349.     if (!opts)

  1350.         return 0;

  1351.     if (!shorthand)

  1352.         shorthand = &dummy_shorthand;

  1353. 

  1354.     while (*opts) {

  1355.         ret = av_opt_get_key_value(&opts, key_val_sep, pairs_sep,

  1356.                                    *shorthand ? AV_OPT_FLAG_IMPLICIT_KEY : 0,

  1357.                                    &parsed_key, &value);

  1358.         if (ret < 0) {

  1359.             if (ret == AVERROR(EINVAL))

  1360.                 av_log(ctx, AV_LOG_ERROR, "No option name near '%s'\n", opts);

  1361.             else

  1362.                 av_log(ctx, AV_LOG_ERROR, "Unable to parse '%s': %s\n", opts,

  1363.                        av_err2str(ret));

  1364.             return ret;

  1365.         }

  1366.         if (*opts)

  1367.             opts++;

  1368.         if (parsed_key) {

  1369.             key = parsed_key;

  1370.             while (*shorthand) /* discard all remaining shorthand */

  1371.                 shorthand++;

  1372.         } else {

  1373.             key = *(shorthand++);

  1374.         }

  1375. 

  1376.         av_log(ctx, AV_LOG_DEBUG, "Setting '%s' to value '%s'\n", key, value);

  1377.         if ((ret = av_opt_set(ctx, key, value, 0)) < 0) {

  1378.             if (ret == AVERROR_OPTION_NOT_FOUND)

  1379.                 av_log(ctx, AV_LOG_ERROR, "Option '%s' not found\n", key);

  1380.             av_free(value);

  1381.             av_free(parsed_key);

  1382.             return ret;

  1383.         }

  1384. 

  1385.         av_free(value);

  1386.         av_free(parsed_key);

  1387.         count++;

  1388.     }

  1389.     return count;

  1390. }

  1391. 

  1392. void av_opt_free(void *obj)

  1393. {

  1394.     const AVOption *o = NULL;

  1395.     while ((o = av_opt_next(obj, o)))

  1396.         if (o->type == AV_OPT_TYPE_STRING || o->type == AV_OPT_TYPE_BINARY)

  1397.             av_freep((uint8_t *)obj + o->offset);

  1398. }

  1399. 

  1400. int av_opt_set_dict(void *obj, AVDictionary **options)

  1401. {

  1402.     AVDictionaryEntry *t = NULL;

  1403.     AVDictionary    *tmp = NULL;

  1404.     int ret = 0;

  1405. 

  1406.     while ((t = av_dict_get(*options, "", t, AV_DICT_IGNORE_SUFFIX))) {

  1407.         ret = av_opt_set(obj, t->key, t->value, 0);

  1408.         if (ret == AVERROR_OPTION_NOT_FOUND)

  1409.             av_dict_set(&tmp, t->key, t->value, 0);

  1410.         else if (ret < 0) {

  1411.             av_log(obj, AV_LOG_ERROR, "Error setting option %s to value %s.\n", t->key, t->value);

  1412.             break;

  1413.         }

  1414.         ret = 0;

  1415.     }

  1416.     av_dict_free(options);

  1417.     *options = tmp;

  1418.     return ret;

  1419. }

  1420. 

  1421. const AVOption *av_opt_find(void *obj, const char *name, const char *unit,

  1422.                             int opt_flags, int search_flags)

  1423. {

  1424.     return av_opt_find2(obj, name, unit, opt_flags, search_flags, NULL);

  1425. }

  1426. 

  1427. const AVOption *av_opt_find2(void *obj, const char *name, const char *unit,

  1428.                              int opt_flags, int search_flags, void **target_obj)

  1429. {

  1430.     const AVClass  *c;

  1431.     const AVOption *o = NULL;

  1432. 

  1433.     if(!obj)

  1434.         return NULL;

  1435. 

  1436.     c= *(AVClass**)obj;

  1437. 

  1438.     if (!c)

  1439.         return NULL;

  1440. 

  1441.     if (search_flags & AV_OPT_SEARCH_CHILDREN) {

  1442.         if (search_flags & AV_OPT_SEARCH_FAKE_OBJ) {

  1443.             const AVClass *child = NULL;

  1444.             while (child = av_opt_child_class_next(c, child))

  1445.                 if (o = av_opt_find2(&child, name, unit, opt_flags, search_flags, NULL))

  1446.                     return o;

  1447.         } else {

  1448.             void *child = NULL;

  1449.             while (child = av_opt_child_next(obj, child))

  1450.                 if (o = av_opt_find2(child, name, unit, opt_flags, search_flags, target_obj))

  1451.                     return o;

  1452.         }

  1453.     }

  1454. 

  1455.     while (o = av_opt_next(obj, o)) {

  1456.         if (!strcmp(o->name, name) && (o->flags & opt_flags) == opt_flags &&

  1457.             ((!unit && o->type != AV_OPT_TYPE_CONST) ||

  1458.              (unit  && o->type == AV_OPT_TYPE_CONST && o->unit && !strcmp(o->unit, unit)))) {

  1459.             if (target_obj) {

  1460.                 if (!(search_flags & AV_OPT_SEARCH_FAKE_OBJ))

  1461.                     *target_obj = obj;

  1462.                 else

  1463.                     *target_obj = NULL;

  1464.             }

  1465.             return o;

  1466.         }

  1467.     }

  1468.     return NULL;

  1469. }

  1470. 

  1471. void *av_opt_child_next(void *obj, void *prev)

  1472. {

  1473.     const AVClass *c = *(AVClass**)obj;

  1474.     if (c->child_next)

  1475.         return c->child_next(obj, prev);

  1476.     return NULL;

  1477. }

  1478. 

  1479. const AVClass *av_opt_child_class_next(const AVClass *parent, const AVClass *prev)

  1480. {

  1481.     if (parent->child_class_next)

  1482.         return parent->child_class_next(prev);

  1483.     return NULL;

  1484. }

  1485. 

  1486. void *av_opt_ptr(const AVClass *class, void *obj, const char *name)

  1487. {

  1488.     const AVOption *opt= av_opt_find2(&class, name, NULL, 0, AV_OPT_SEARCH_FAKE_OBJ, NULL);

  1489.     if(!opt)

  1490.         return NULL;

  1491.     return (uint8_t*)obj + opt->offset;

  1492. }

  1493. 

  1494. int av_opt_query_ranges(AVOptionRanges **ranges_arg, void *obj, const char *key, int flags)

  1495. {

  1496.     const AVClass *c = *(AVClass**)obj;

  1497.     int (*callback)(AVOptionRanges **, void *obj, const char *key, int flags) = NULL;

  1498. 

  1499.     if (c->version > (52 << 16 | 11 << 8))

  1500.         callback = c->query_ranges;

  1501. 

  1502.     if (!callback)

  1503.         callback = av_opt_query_ranges_default;

  1504. 

  1505.     return callback(ranges_arg, obj, key, flags);

  1506. }

  1507. 

  1508. int av_opt_query_ranges_default(AVOptionRanges **ranges_arg, void *obj, const char *key, int flags)

  1509. {

  1510.     AVOptionRanges *ranges = av_mallocz(sizeof(*ranges));

  1511.     AVOptionRange **range_array = av_mallocz(sizeof(void*));

  1512.     AVOptionRange *range = av_mallocz(sizeof(*range));

  1513.     const AVOption *field = av_opt_find(obj, key, NULL, 0, flags);

  1514.     int ret;

  1515. 

  1516.     *ranges_arg = NULL;

  1517. 

  1518.     if (!ranges || !range || !range_array || !field) {

  1519.         ret = AVERROR(ENOMEM);

  1520.         goto fail;

  1521.     }

  1522. 

  1523.     ranges->range = range_array;

  1524.     ranges->range[0] = range;

  1525.     ranges->nb_ranges = 1;

  1526.     range->is_range = 1;

  1527.     range->value_min = field->min;

  1528.     range->value_max = field->max;

  1529. 

  1530.     switch (field->type) {

  1531.     case AV_OPT_TYPE_INT:

  1532.     case AV_OPT_TYPE_INT64:

  1533.     case AV_OPT_TYPE_PIXEL_FMT:

  1534.     case AV_OPT_TYPE_SAMPLE_FMT:

  1535.     case AV_OPT_TYPE_FLOAT:

  1536.     case AV_OPT_TYPE_DOUBLE:

  1537.     case AV_OPT_TYPE_DURATION:

  1538.     case AV_OPT_TYPE_COLOR:

  1539.     case AV_OPT_TYPE_CHANNEL_LAYOUT:

  1540.         break;

  1541.     case AV_OPT_TYPE_STRING:

  1542.         range->component_min = 0;

  1543.         range->component_max = 0x10FFFF; // max unicode value

  1544.         range->value_min = -1;

  1545.         range->value_max = INT_MAX;

  1546.         break;

  1547.     case AV_OPT_TYPE_RATIONAL:

  1548.         range->component_min = INT_MIN;

  1549.         range->component_max = INT_MAX;

  1550.         break;

  1551.     case AV_OPT_TYPE_IMAGE_SIZE:

  1552.         range->component_min = 0;

  1553.         range->component_max = INT_MAX/128/8;

  1554.         range->value_min = 0;

  1555.         range->value_max = INT_MAX/8;

  1556.         break;

  1557.     case AV_OPT_TYPE_VIDEO_RATE:

  1558.         range->component_min = 1;

  1559.         range->component_max = INT_MAX;

  1560.         range->value_min = 1;

  1561.         range->value_max = INT_MAX;

  1562.         break;

  1563.     default:

  1564.         ret = AVERROR(ENOSYS);

  1565.         goto fail;

  1566.     }

  1567. 

  1568.     *ranges_arg = ranges;

  1569.     return 0;

  1570. fail:

  1571.     av_free(ranges);

  1572.     av_free(range);

  1573.     av_free(range_array);

  1574.     return ret;

  1575. }

  1576. 

  1577. void av_opt_freep_ranges(AVOptionRanges **rangesp)

  1578. {

  1579.     int i;

  1580.     AVOptionRanges *ranges = *rangesp;

  1581. 

  1582.     for (i = 0; i < ranges->nb_ranges; i++) {

  1583.         AVOptionRange *range = ranges->range[i];

  1584.         av_freep(&range->str);

  1585.         av_freep(&ranges->range[i]);

  1586.     }

  1587.     av_freep(&ranges->range);

  1588.     av_freep(rangesp);

  1589. }

  1590. 

  1591. #ifdef TEST

  1592. 

  1593. typedef struct TestContext

  1594. {

  1595.     const AVClass *class;

  1596.     int num;

  1597.     int toggle;

  1598.     char *string;

  1599.     int flags;

  1600.     AVRational rational;

  1601.     AVRational video_rate;

  1602.     int w, h;

  1603.     enum AVPixelFormat pix_fmt;

  1604.     enum AVSampleFormat sample_fmt;

  1605.     int64_t duration;

  1606.     uint8_t color[4];

  1607.     int64_t channel_layout;

  1608. } TestContext;

  1609. 

  1610. #define OFFSET(x) offsetof(TestContext, x)

  1611. 

  1612. #define TEST_FLAG_COOL 01

  1613. #define TEST_FLAG_LAME 02

  1614. #define TEST_FLAG_MU   04

  1615. 

  1616. static const AVOption test_options[]= {

  1617. {"num",      "set num",        OFFSET(num),      AV_OPT_TYPE_INT,      {.i64 = 0},       0,        100                 },

  1618. {"toggle",   "set toggle",     OFFSET(toggle),   AV_OPT_TYPE_INT,      {.i64 = 0},       0,        1                   },

  1619. {"rational", "set rational",   OFFSET(rational), AV_OPT_TYPE_RATIONAL, {.dbl = 0},       0,        10                  },

  1620. {"string",   "set string",     OFFSET(string),   AV_OPT_TYPE_STRING,   {.str = "default"}, CHAR_MIN, CHAR_MAX          },

  1621. {"flags",    "set flags",      OFFSET(flags),    AV_OPT_TYPE_FLAGS,    {.i64 = 0},       0,        INT_MAX, 0, "flags" },

  1622. {"cool",     "set cool flag ", 0,                AV_OPT_TYPE_CONST,    {.i64 = TEST_FLAG_COOL}, INT_MIN,  INT_MAX, 0, "flags" },

  1623. {"lame",     "set lame flag ", 0,                AV_OPT_TYPE_CONST,    {.i64 = TEST_FLAG_LAME}, INT_MIN,  INT_MAX, 0, "flags" },

  1624. {"mu",       "set mu flag ",   0,                AV_OPT_TYPE_CONST,    {.i64 = TEST_FLAG_MU},   INT_MIN,  INT_MAX, 0, "flags" },

  1625. {"size",     "set size",       OFFSET(w),        AV_OPT_TYPE_IMAGE_SIZE,{0},             0,        0                   },

  1626. {"pix_fmt",  "set pixfmt",     OFFSET(pix_fmt),  AV_OPT_TYPE_PIXEL_FMT, {.i64 = AV_PIX_FMT_NONE}, -1, INT_MAX},

  1627. {"sample_fmt", "set samplefmt", OFFSET(sample_fmt), AV_OPT_TYPE_SAMPLE_FMT, {.i64 = AV_SAMPLE_FMT_NONE}, -1, INT_MAX},

  1628. {"video_rate", "set videorate", OFFSET(video_rate), AV_OPT_TYPE_VIDEO_RATE,  {.str = "25"}, 0,     0                   },

  1629. {"duration", "set duration",   OFFSET(duration), AV_OPT_TYPE_DURATION, {.i64 = 0}, 0, INT64_MAX},

  1630. {"color", "set color",   OFFSET(color), AV_OPT_TYPE_COLOR, {.str = "pink"}, 0, 0},

  1631. {"cl", "set channel layout", OFFSET(channel_layout), AV_OPT_TYPE_CHANNEL_LAYOUT, {.i64 = AV_CH_LAYOUT_HEXAGONAL}, 0, INT64_MAX},

  1632. {NULL},

  1633. };

  1634. 

  1635. static const char *test_get_name(void *ctx)

  1636. {

  1637.     return "test";

  1638. }

  1639. 

  1640. static const AVClass test_class = {

  1641.     "TestContext",

  1642.     test_get_name,

  1643.     test_options

  1644. };

  1645. 

  1646. int main(void)

  1647. {

  1648.     int i;

  1649. 

  1650.     printf("\nTesting av_set_options_string()\n");

  1651.     {

  1652.         TestContext test_ctx = { 0 };

  1653.         static const char * const options[] = {

  1654.             "",

  1655.             ":",

  1656.             "=",

  1657.             "foo=:",

  1658.             ":=foo",

  1659.             "=foo",

  1660.             "foo=",

  1661.             "foo",

  1662.             "foo=val",

  1663.             "foo==val",

  1664.             "toggle=:",

  1665.             "string=:",

  1666.             "toggle=1 : foo",

  1667.             "toggle=100",

  1668.             "toggle==1",

  1669.             "flags=+mu-lame : num=42: toggle=0",

  1670.             "num=42 : string=blahblah",

  1671.             "rational=0 : rational=1/2 : rational=1/-1",

  1672.             "rational=-1/0",

  1673.             "size=1024x768",

  1674.             "size=pal",

  1675.             "size=bogus",

  1676.             "pix_fmt=yuv420p",

  1677.             "pix_fmt=2",

  1678.             "pix_fmt=bogus",

  1679.             "sample_fmt=s16",

  1680.             "sample_fmt=2",

  1681.             "sample_fmt=bogus",

  1682.             "video_rate=pal",

  1683.             "video_rate=25",

  1684.             "video_rate=30000/1001",

  1685.             "video_rate=30/1.001",

  1686.             "video_rate=bogus",

  1687.             "duration=bogus",

  1688.             "duration=123.45",

  1689.             "duration=1\\:23\\:45.67",

  1690.             "color=blue",

  1691.             "color=0x223300",

  1692.             "color=0x42FF07AA",

  1693.             "cl=stereo+downmix",

  1694.             "cl=foo",

  1695.         };

  1696. 

  1697.         test_ctx.class = &test_class;

  1698.         av_opt_set_defaults(&test_ctx);

  1699. 

  1700.         av_log_set_level(AV_LOG_DEBUG);

  1701. 

  1702.         for (i=0; i < FF_ARRAY_ELEMS(options); i++) {

  1703.             av_log(&test_ctx, AV_LOG_DEBUG, "Setting options string '%s'\n", options[i]);

  1704.             if (av_set_options_string(&test_ctx, options[i], "=", ":") < 0)

  1705.                 av_log(&test_ctx, AV_LOG_ERROR, "Error setting options string: '%s'\n", options[i]);

  1706.             printf("\n");

  1707.         }

  1708.         av_opt_free(&test_ctx);

  1709.     }

  1710. 

  1711.     printf("\nTesting av_opt_set_from_string()\n");

  1712.     {

  1713.         TestContext test_ctx = { 0 };

  1714.         static const char * const options[] = {

  1715.             "",

  1716.             "5",

  1717.             "5:hello",

  1718.             "5:hello:size=pal",

  1719.             "5:size=pal:hello",

  1720.             ":",

  1721.             "=",

  1722.             " 5 : hello : size = pal ",

  1723.             "a_very_long_option_name_that_will_need_to_be_ellipsized_around_here=42"

  1724.         };

  1725.         static const char * const shorthand[] = { "num", "string", NULL };

  1726. 

  1727.         test_ctx.class = &test_class;

  1728.         av_opt_set_defaults(&test_ctx);

  1729. 

  1730.         av_log_set_level(AV_LOG_DEBUG);

  1731. 

  1732.         for (i=0; i < FF_ARRAY_ELEMS(options); i++) {

  1733.             av_log(&test_ctx, AV_LOG_DEBUG, "Setting options string '%s'\n", options[i]);

  1734.             if (av_opt_set_from_string(&test_ctx, options[i], shorthand, "=", ":") < 0)

  1735.                 av_log(&test_ctx, AV_LOG_ERROR, "Error setting options string: '%s'\n", options[i]);

  1736.             printf("\n");

  1737.         }

  1738.         av_opt_free(&test_ctx);

  1739.     }

  1740. 

  1741.     return 0;

  1742. }

  1743. 

  1744. #endif