/*  x11amp - graphically mp3 player..
 *  Copyright (C) 1998-1999  Mikael Alm, Olle Hallnas, Thomas Nilsson and 4Front Technologies
 *
 *  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 "OSS.h"


void get_volume(int *l,int *r)
{
	int fd,v,cmd,devs;
	gchar *devname;
	
	if(oss_cfg.mixer_device!=-1)
		devname=g_strdup_printf("/dev/mixer%d",oss_cfg.mixer_device);
	else
		devname=g_strdup("/dev/mixer");
	fd=open(devname,O_RDONLY);
	g_free(devname);
	if(fd!=-1)
	{
		ioctl(fd,SOUND_MIXER_READ_DEVMASK,&devs);
		if(devs&SOUND_MASK_PCM)
			cmd=SOUND_MIXER_READ_PCM;
		else if(devs&SOUND_MASK_VOLUME)
			cmd=SOUND_MIXER_READ_VOLUME;
		else
		{
			close(fd);
			return;
		}
		ioctl(fd,cmd,&v);
		*r=(v&0xFF00)>>8;
		*l=(v&0x00FF);
		close(fd);
	}
}

void set_volume(int l,int r)
{
	int fd,v,cmd,devs;
	gchar *devname;
	
	if(oss_cfg.mixer_device!=-1)
		devname=g_strdup_printf("/dev/mixer%d",oss_cfg.mixer_device);
	else
		devname=g_strdup("/dev/mixer");
	fd=open(devname,O_RDONLY);
	g_free(devname);

	if(fd!=-1)
	{
		ioctl(fd,SOUND_MIXER_READ_DEVMASK,&devs);
		if(devs&SOUND_MASK_PCM)
			cmd=SOUND_MIXER_WRITE_PCM;
		else if(devs&SOUND_MASK_VOLUME)
			cmd=SOUND_MIXER_WRITE_VOLUME;
		else
		{
			close(fd);
			return;
		}
		v=(r<<8)|l; 
		ioctl(fd,cmd,&v);
		close(fd);
	}
}