adding volume control

1 files changed, 136 insertions, 0 deletions

diff --git a/lib/dvb/volume.cpp b/lib/dvb/volume.cpp
new file mode 100644
index 00000000..bc3d6574
--- /dev/null
+++ b/lib/dvb/volume.cpp
@@ -0,0 +1,136 @@
+#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 / 100.0 * 63.0;
+	right = 63 - rightVol / 100.0 * 63.0;
+	
+#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();
+		
+}
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