void ipod_init_volume_control()
{
ipod_init_sound();
ipod_init_input();
ipod_init_backlight();
int input, exit;
exit = 0;
while (exit != 1) {
input = ipod_get_keypress();
if (!KEYSTATE(input)) { // Pressed
input = KEYCODE(input);
switch (input) {
case SCROLL_R:
if (SCROLL_MOD(SCROLL_MOD_NUM)) {
ipod_volume++;
if (ipod_volume > 70)
ipod_volume = 70; // To be safe - 70 is VERY loud
ipod_update_volume();
}
break;
case KEY_ACTION:
ipod_toggle_backlight();
break;
case SCROLL_L:
if (SCROLL_MOD(SCROLL_MOD_NUM)) {
ipod_volume--;
if (ipod_volume < 0)
ipod_volume = 0; // Negative volume DNE!
ipod_update_volume();
}
break;
case KEY_MENU:
exit = 1;
break;
default:
break;
}
}
}
printf("Exiting...\n");
ipod_exit_sound();
ipod_exit_input();
}
void ipod_init_sound()
{
sound_fd = open("/dev/dsp", O_WRONLY);
ipod_mixer = open("/dev/mixer", O_RDWR);
ipod_update_volume();
int channels;
channels = 1; // Mono MUCH better and smoother than stereo!
ioctl(sound_fd, SNDCTL_DSP_CHANNELS, &channels);
ioctl(sound_fd, SNDCTL_DSP_SPEED, &sound_frequency);
}
static void ipod_init_sound()
{
ipod_mixer = open("/dev/mixer", O_RDWR);
ipod_volume = 50; // Good default
ipod_update_volume();
}
