#include <lib/dvb/volume.h>
#include <stdio.h>
#include <fcntl.h>
#include <sys/ioctl.h>
#include <unistd.h>

#include <config.h>
#if HAVE_DVB_API_VERSION < 3
#define VIDEO_DEV "/dev/dvb/card0/video0"
#define AUDIO_DEV "/dev/dvb/card0/audio0"
#include <ost/audio.h>
#include <ost/video.h>
#else
#define VIDEO_DEV "/dev/dvb/adapter0/video0"
#define AUDIO_DEV "/dev/dvb/adapter0/audio0"
#include <linux/dvb/audio.h>
#include <linux/dvb/video.h>
#endif

eDVBVolumecontrol* eDVBVolumecontrol::instance = NULL;

eDVBVolumecontrol* eDVBVolumecontrol::getInstance()
{
	if (instance == NULL)
		instance = new eDVBVolumecontrol;
	return instance;
}

eDVBVolumecontrol::eDVBVolumecontrol()
{
	volumeUnMute();
	setVolume(100, 100);
}

int eDVBVolumecontrol::openMixer()
{
	return open( AUDIO_DEV, O_RDWR );
}

void eDVBVolumecontrol::closeMixer(int fd)
{
	close(fd);
}

void eDVBVolumecontrol::volumeUp(int left, int right)
{
	printf("[volume.cpp] Volume up\n");
	setVolume(leftVol + left, rightVol + right);
}

void eDVBVolumecontrol::volumeDown(int left, int right)
{
	printf("[volume.cpp] Volume down\n");
	setVolume(leftVol - left, rightVol - right);
}

int eDVBVolumecontrol::checkVolume(int vol)
{
	if (vol < 0)
		vol = 0;
	else if (vol > 100)
		vol = 100;
	return vol;
}

void eDVBVolumecontrol::setVolume(int left, int right)
{
	leftVol = checkVolume(left);
	rightVol = checkVolume(right);
	
	left = 63 - leftVol * 63 / 100;
	right = 63 - rightVol * 63 / 100;
	
#if HAVE_DVB_API_VERSION < 3   
		audioMixer_t mixer;
#else
		audio_mixer_t mixer;
#endif

#ifdef HAVE_DVB_API_VERSION
		mixer.volume_left = (left * left) / 64;
		mixer.volume_right = (right * right) / 64;
#endif

		int fd = openMixer();
#ifdef HAVE_DVB_API_VERSION
		ioctl(fd, AUDIO_SET_MIXER, &mixer);
#endif
		closeMixer(fd);
		
		printf("Setvolume: %d %d\n", leftVol, rightVol);
		printf("Setvolume: %d %d\n", left, right);		
}

int eDVBVolumecontrol::getVolume()
{
	if (isMuted())
		return 0;
	return leftVol;
}

bool eDVBVolumecontrol::isMuted()
{
	return muted;
}


void eDVBVolumecontrol::volumeMute()
{
	int fd = openMixer();
#ifdef HAVE_DVB_API_VERSION	
	ioctl(fd, AUDIO_SET_MUTE, true);
#endif
	closeMixer(fd);
	muted = true;
}

void eDVBVolumecontrol::volumeUnMute()
{
	int fd = openMixer();
#ifdef HAVE_DVB_API_VERSION
	ioctl(fd, AUDIO_SET_MUTE, false);
#endif
	closeMixer(fd);
	muted = false;
}

void eDVBVolumecontrol::volumeToggleMute()
{
	printf("Mute\n");
	if (isMuted())
		volumeUnMute();
	else
		volumeMute();
		
}