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#include <string.h>
#include <sys/ioctl.h>
#include <fcntl.h>
#include <stdio.h>
#include <unistd.h>
#include "config.h"
#include "mixer.h"
#include "libao2/audio_out.h"
extern ao_functions_t *audio_out;
char * mixer_device=NULL;
int muted = 0;
float mute_l = 0.0f;
float mute_r = 0.0f;
void mixer_getvolume( float *l,float *r )
{
ao_control_vol_t vol;
*l=0; *r=0;
if(audio_out){
if(CONTROL_OK != audio_out->control(AOCONTROL_GET_VOLUME,&vol))
return;
*r=vol.right;
*l=vol.left;
}
}
void mixer_setvolume( float l,float r )
{
ao_control_vol_t vol;
vol.right=r; vol.left=l;
if(audio_out){
if(CONTROL_OK != audio_out->control(AOCONTROL_SET_VOLUME,&vol))
return;
}
muted=0;
}
#define MIXER_CHANGE 3
void mixer_incvolume( void )
{
float mixer_l, mixer_r;
mixer_getvolume( &mixer_l,&mixer_r );
mixer_l += MIXER_CHANGE;
if ( mixer_l > 100 ) mixer_l = 100;
mixer_r += MIXER_CHANGE;
if ( mixer_r > 100 ) mixer_r = 100;
mixer_setvolume( mixer_l,mixer_r );
}
void mixer_decvolume( void )
{
float mixer_l, mixer_r;
mixer_getvolume( &mixer_l,&mixer_r );
mixer_l -= MIXER_CHANGE;
if ( mixer_l < 0 ) mixer_l = 0;
mixer_r -= MIXER_CHANGE;
if ( mixer_r < 0 ) mixer_r = 0;
mixer_setvolume( mixer_l,mixer_r );
}
float mixer_getbothvolume( void )
{
float mixer_l, mixer_r;
mixer_getvolume( &mixer_l,&mixer_r );
return ( mixer_l + mixer_r ) / 2;
}
void mixer_mute( void )
{
if ( muted ) mixer_setvolume( mute_l,mute_r );
else
{
mixer_getvolume( &mute_l,&mute_r );
mixer_setvolume( 0,0 );
muted=1;
}
}
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