conf.c

   1 #include <pthread.h>
   2 #include <semaphore.h>
   3 #include <string.h>
   4 #include <syslog.h>
   5 #include <stdio.h>
   6
   7 #include "conf.h"
   8 #include "debug_print.h"
   9
  10 // ミューテックス
  11 static pthread_mutex_t  mutex_conf = PTHREAD_MUTEX_INITIALIZER;
  12
  13 //
  14 /**** 記録周波数 ***************************************************
  15 */
  16
  17 static int      freq;
  18
  19 void conf_freq_set(int f)
  20 {
  21 pthread_mutex_lock(&mutex_conf);
  22         freq = f;
  23 pthread_mutex_unlock(&mutex_conf);
  24 }
  25 int conf_freq_get(void)
  26 {
  27         int     f;
  28 pthread_mutex_lock(&mutex_conf);
  29         f = freq;
  30 pthread_mutex_unlock(&mutex_conf);
  31         return f;
  32 }
  33 //
  34 /**** Gain ***************************************************
  35 */
  36 /*
  37         0=1/8, 1=1/4, 2=1/2, 3=1, 4=2, 5=4
  38         6=8, 7=16, 8=32, 9=64, 10=128
  39 */
  40 static int      gain;
  41
  42 void conf_gain_set(int f)
  43 {
  44 pthread_mutex_lock(&mutex_conf);
  45         gain = f;
  46 pthread_mutex_unlock(&mutex_conf);
  47 }
  48 int conf_gain_get(void)
  49 {
  50         int     f;
  51 pthread_mutex_lock(&mutex_conf);
  52         f = gain;
  53 pthread_mutex_unlock(&mutex_conf);
  54         return f;
  55 }
  56
  57 //
  58 /**** 設定ファイル *******************************************
  59 */
  60 /*
  61         文字列の前から空白を取り除く
  62 */
  63 static void trims_space(char *name)
  64 {
  65         char    c;
  66         char    *name0;
  67         int     len;
  68
  69         name0 = name;
  70         len = strlen(name);
  71
  72         // 最初の非空白文字までポインタ移動
  73         while (*name) {
  74                 c = *name;
  75                 if (c != ' ') break;
  76                 name++;
  77                 len--;
  78         }
  79         if (len < 0) return;
  80         // 移動
  81         if (name0 != name) memmove(name0, name, len);
  82         // 末尾に０入れる
  83         name0[len] = 0;
  84 }
  85 /*
  86         文字列の後ろから空白を取り除く
  87 */
  88 static void trime_space(char *name)
  89 {
  90         char    c;
  91         int     len, i;
  92
  93         // 文字列末尾
  94         len = strlen(name);
  95         name += (len - 1);
  96         // 最初の非空白文字までポインタ移動
  97         for(i = len - 1; i >= 0; i--) {
  98                 c = *name;
  99                 if (c != ' ') break;
 100                 name--;
 101         }
 102         // 末尾に０入れる
 103         *(name + 1) = 0;
 104 }
 105 /*
 106         文字列の前後から空白を取り除く
 107 */
 108 static void trim_space(char *name)
 109 {
 110         if (name == NULL) return;
 111         trims_space(name);
 112         trime_space(name);
 113 }
 114 /*
 115         文字列の末尾からCR LFを除く
 116 */
 117 static void trim_crlf(char *name)
 118 {
 119         int     i;
 120         int     len;
 121         char    *src, *dst;
 122
 123         if (name == NULL) return;
 124         len = strlen(name);
 125         src = name;
 126         dst = name;
 127         for(i = 0; i < len; i++) {
 128                 if (*src != 0x0d && *src != 0x0a) {
 129                         *dst = *src;
 130                         dst++;
 131                 }
 132                 src++;
 133         }
 134         *dst = 0;
 135 }
 136
 137 /*
 138         読み込み
 139
 140 return
 141         -1=ERR
 142         0=OK
 143 */
 144 int conf_read(void)
 145 {
 146         FILE    *fp;
 147         char    buf[256];
 148 //      char    buf2[256];
 149         int     f;
 150
 151         fp = fopen(CONF_FILE, "rt");
 152         if (fp == NULL) {
 153                 syslog(LOG_ERR, "conf_read(): conf file not found. %s", CONF_FILE);
 154                 return -1;
 155         }
 156
 157         syslog(LOG_INFO, "conf_read():");
 158         while(fgets(buf, sizeof(buf), fp)) {
 159                 // CR LF除く
 160                 trim_crlf(buf);
 161                 trim_space(buf);
 162                 PDEBUG(buf);
 163                 PDEBUG("\n");
 164                 // 記録周波数
 165                 if (sscanf(buf, "freq = %d", &f) == 1) {
 166                         conf_freq_set(f);
 167                         syslog(LOG_INFO, "freq=%d", conf_freq_get());
 168                 }
 169                 // Gain
 170                 if (sscanf(buf, "gain = %d", &f) == 1) {
 171                         conf_gain_set(f);
 172                         syslog(LOG_INFO, "gain=%d", conf_gain_get());
 173                 }
 174         }
 175         fclose(fp);
 176         return 0;
 177 }
 178
 179