dockapps/wmradio/radio.c
Doug Torrance cd4985a5cb wmradio: Add version 0.9 to repository.
Obtained from
ftp://ftp.afterstep.org/stable/rpms/misc-tarballs/wmradio-0.9.tgz
2016-11-28 09:01:16 +00:00

96 lines
2.3 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 <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <errno.h>
#include <fcntl.h>
#include <sys/time.h>
#include <sys/ioctl.h>
#include <linux/videodev.h>
char *device = "/dev/radio";
int get_freq_fact(int fd)
{
struct video_tuner tuner;
tuner.tuner = 0;
if (ioctl (fd, VIDIOCGTUNER, &tuner) < 0)
return 16;
if ((tuner.flags & VIDEO_TUNER_LOW) == 0)
return 16;
return 16000;
}
int radio_setfreq(int fd, int freq)
{
int ifreq = (freq/100.0+1.0/32.0)*get_freq_fact(fd);
return ioctl(fd, VIDIOCSFREQ, &ifreq);
}
void radio_unmute(int fd)
{
struct video_audio vid_aud;
if (ioctl(fd, VIDIOCGAUDIO, &vid_aud))
perror("VIDIOCGAUDIO");
if (vid_aud.volume == 0)
vid_aud.volume = 65535;
vid_aud.flags &= ~VIDEO_AUDIO_MUTE;
if (ioctl(fd, VIDIOCSAUDIO, &vid_aud))
perror("VIDIOCSAUDIO");
}
void radio_mute(int fd)
{
struct video_audio vid_aud;
if (ioctl(fd, VIDIOCGAUDIO, &vid_aud))
perror("VIDIOCGAUDIO");
vid_aud.flags |= VIDEO_AUDIO_MUTE;
if (ioctl(fd, VIDIOCSAUDIO, &vid_aud))
perror("VIDIOCSAUDIO");
}
int radio_getstereo(int fd)
{
struct video_audio va;
va.mode=-1;
if(ioctl(fd, VIDIOCGAUDIO, &va) < 0) return 0;
return va.mode == VIDEO_SOUND_STEREO ? 1 : 0;
}
int radio_getsignal(int fd)
{
struct video_tuner vt;
int signal;
memset(&vt,0,sizeof(vt));
ioctl (fd, VIDIOCGTUNER, &vt);
signal=vt.signal>>13;
return signal;
};