160 lines
3.5 KiB
C
160 lines
3.5 KiB
C
/*
|
|
* Copyright (C) 12 Jun 2003 Tomas Cermak
|
|
*
|
|
* This file is part of wmradio program.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
|
|
*/
|
|
|
|
#include "stationnames.h"
|
|
#include "rc.h"
|
|
#include <string.h>
|
|
#include <stdlib.h>
|
|
#include <math.h>
|
|
|
|
#define STATION_NAMES_INTERVAL 0.03
|
|
|
|
char *freqtostr(int freq)
|
|
{
|
|
static char buffer[10];
|
|
|
|
sprintf(buffer, "%i.%.2i\n", freq / 100,freq % 100);
|
|
return buffer;
|
|
}
|
|
|
|
int ato100i(char *str)
|
|
{
|
|
char *p,*q;
|
|
int result,tmp;
|
|
|
|
p = strstr(str,".");
|
|
if(!p) {
|
|
return atoi(str) * 100;
|
|
}
|
|
q = p; q++;
|
|
*p = 0;
|
|
result = atoi(str) * 100;
|
|
tmp = atoi(q);
|
|
*p = '.';
|
|
|
|
switch(strlen(q)) {
|
|
case 1:
|
|
result += 10 * tmp;
|
|
break;
|
|
case 2:
|
|
result += tmp;
|
|
}
|
|
return result;
|
|
}
|
|
|
|
IniVariable *station_find_by_name(char *name)
|
|
{
|
|
return rc_get_variable_ini_variable(SECTION_NAMES,name);
|
|
}
|
|
|
|
IniVariable *station_find_by_freq(int freq)
|
|
{
|
|
IniSection *section;
|
|
IniVariable *variable;
|
|
List *item;
|
|
int cfreq;
|
|
|
|
section = rc_get_section(SECTION_NAMES);
|
|
if(!section) return NULL;
|
|
for(item = section->variables; item; item = item->next) {
|
|
variable = item->data;
|
|
cfreq = ato100i(variable->value);
|
|
if((cfreq > freq - STATION_NAMES_INTERVAL) &&(cfreq < freq + STATION_NAMES_INTERVAL))
|
|
return variable;
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
void station_add(char *name, int freq)
|
|
{
|
|
rc_set_variable(SECTION_NAMES,name,freqtostr(freq));
|
|
}
|
|
|
|
char *station_get_freq_name(int freq)
|
|
{
|
|
IniVariable *variable;
|
|
|
|
variable = station_find_by_freq(freq);
|
|
if(!variable) return NULL;
|
|
return variable->name;
|
|
}
|
|
|
|
void station_set_freq_name(int freq, char *name)
|
|
{
|
|
rc_set_variable(SECTION_NAMES,name,freqtostr(freq));
|
|
}
|
|
|
|
List *station_nearest(int freq)
|
|
{
|
|
IniSection *section;
|
|
List *item,*current;
|
|
IniVariable *item_var;
|
|
int delta;
|
|
|
|
section = rc_get_section(SECTION_NAMES);
|
|
if(! section ) return NULL;
|
|
item = current = section -> variables;
|
|
if(!item) return NULL;
|
|
item_var = item->data;
|
|
delta = abs(freq - ato100i(item_var->value));
|
|
while(item) {
|
|
item_var = item->data;
|
|
if(abs(freq - ato100i(item_var->value)) < delta) {
|
|
current = item;
|
|
delta = abs(freq - ato100i(item_var->value));
|
|
}
|
|
item = item->next;
|
|
}
|
|
return current;
|
|
}
|
|
|
|
int station_next_freq(int freq)
|
|
{
|
|
IniVariable *item_var;
|
|
List *item;
|
|
|
|
item = station_nearest(freq);
|
|
if(!item) return freq;
|
|
if(item->next) {
|
|
item_var = item->next->data;
|
|
return ato100i(item_var->value);
|
|
}
|
|
while(item->prev) item = item->prev;
|
|
item_var = item->data;
|
|
return ato100i(item_var->value);
|
|
}
|
|
|
|
int station_prev_freq(int freq)
|
|
{
|
|
IniVariable *item_var;
|
|
List *item;
|
|
|
|
item = station_nearest(freq);
|
|
if(!item) return freq;
|
|
if(item->prev) {
|
|
item_var = item->prev->data;
|
|
return ato100i(item_var->value);
|
|
}
|
|
while(item->next) item = item->next;
|
|
item_var = item->data;
|
|
return ato100i(item_var->value);
|
|
}
|
|
|