internal AudioSessionManager(IAudioSessionManager2 realAudioSessionManager)
{
_AudioSessionManager = realAudioSessionManager;
IAudioSessionEnumerator _SessionEnum ;
Marshal.ThrowExceptionForHR(_AudioSessionManager.GetSessionEnumerator(out _SessionEnum));
_Sessions = new SessionCollection(_SessionEnum);
}
internal AudioSessionManager(IAudioSessionManager audioSessionManager)
{
audioSessionInterface = audioSessionManager;
audioSessionInterface2 = audioSessionManager as IAudioSessionManager2;
RefreshSessions();
}
internal AudioSessionManager(IAudioSessionManager2 realAudioSessionManager)
{
try
{
_AudioSessionManager = realAudioSessionManager;
IAudioSessionEnumerator _SessionEnum;
Marshal.ThrowExceptionForHR(_AudioSessionManager.GetSessionEnumerator(out _SessionEnum));
_Sessions = new SessionCollection(_SessionEnum);
}
catch (Exception ex)
{
System.Diagnostics.Trace.WriteLine(DateTime.Now);
System.Diagnostics.Trace.WriteLine(ex);
}
}
internal AudioSessionManager2(IAudioSessionManager2 realAudioSessionManager2)
{
_AudioSessionManager2 = realAudioSessionManager2;
RefreshSessions();
}
private static ISimpleAudioVolume GetVolumeObject(int pid)
{
IMMDeviceEnumerator deviceEnumerator = null;
IAudioSessionEnumerator sessionEnumerator = null;
IAudioSessionManager2 mgr = null;
IMMDevice speakers = null;
try
{
// get the speakers (1st render + multimedia) device
deviceEnumerator = (IMMDeviceEnumerator)(new MMDeviceEnumerator());
deviceEnumerator.GetDefaultAudioEndpoint(EDataFlow.eRender, ERole.eMultimedia, out speakers);
// activate the session manager. we need the enumerator
Guid IID_IAudioSessionManager2 = typeof(IAudioSessionManager2).GUID;
object o;
speakers.Activate(ref IID_IAudioSessionManager2, 0, IntPtr.Zero, out o);
mgr = (IAudioSessionManager2)o;
// enumerate sessions for on this device
mgr.GetSessionEnumerator(out sessionEnumerator);
int count;
sessionEnumerator.GetCount(out count);
// search for an audio session with the required process-id
ISimpleAudioVolume volumeControl = null;
for (int i = 0; i < count; ++i)
{
IAudioSessionControl2 ctl = null;
try
{
sessionEnumerator.GetSession(i, out ctl);
// NOTE: we could also use the app name from ctl.GetDisplayName()
int cpid;
ctl.GetProcessId(out cpid);
if (cpid == pid)
{
volumeControl = ctl as ISimpleAudioVolume;
break;
}
}
finally
{
if (ctl != null)
{
Marshal.ReleaseComObject(ctl);
}
}
}
return(volumeControl);
}
finally
{
if (sessionEnumerator != null)
{
Marshal.ReleaseComObject(sessionEnumerator);
}
if (mgr != null)
{
Marshal.ReleaseComObject(mgr);
}
if (speakers != null)
{
Marshal.ReleaseComObject(speakers);
}
if (deviceEnumerator != null)
{
Marshal.ReleaseComObject(deviceEnumerator);
}
}
}
public static void SetApplicationMute(string procname, bool mute)
{
IAudioSessionManager2 mgr = null;
IAudioSessionEnumerator sessionEnumerator = null;
try
{
ISimpleAudioVolume obj = null;
mgr = GetAudioSessionManager();
if (mgr == null)
{
return;
}
mgr.GetSessionEnumerator(out sessionEnumerator);
int count;
sessionEnumerator.GetCount(out count);
for (int i = 0; i < count; i++)
{
IAudioSessionControl ctl;
sessionEnumerator.GetSession(i, out ctl);
if (ctl == null)
{
continue;
}
IAudioSessionControl2 ctl2 = ctl as IAudioSessionControl2;
if (ctl2 != null)
{
try
{
if (new AudioSession(ctl2).Process.ProcessName.ToLower().Equals(procname))
{
obj = ctl2 as ISimpleAudioVolume;
if (mute)
{
//obj.SetMute(mute, Guid.Empty);
try
{
obj.GetMasterVolume(out volume); // Save old volume
}
catch (Exception e)
{
}
obj.SetMasterVolume(0f, Guid.Empty);
}
else
{
obj.SetMasterVolume(volume, Guid.Empty);
}
}
}
catch (Exception e)
{
Console.WriteLine(e);
}
}
}
Marshal.ReleaseComObject(sessionEnumerator);
Marshal.ReleaseComObject(mgr);
}
catch (Exception spotify_hire_me)
{
Console.WriteLine(spotify_hire_me);
}
finally
{
Marshal.ReleaseComObject(sessionEnumerator);
Marshal.ReleaseComObject(mgr);
}
return;
}
public static VolumeControl GetVolumeControl(int p)
{
ISimpleAudioVolume volumeControl = null;
IMMDeviceEnumerator deviceEnumerator = null;
IMMDevice speakers = null;
IAudioSessionManager2 sm = null;
IAudioSessionEnumerator sessionEnumerator = null;
int ctlPid = 0;
try {
// Get default device
deviceEnumerator = (IMMDeviceEnumerator) new MMDeviceEnumerator();
deviceEnumerator.GetDefaultAudioEndpoint(EDataFlow.eRender, ERole.eMultimedia, out speakers);
// Get session manager
Guid IID_IAudioSessionManager2 = typeof(IAudioSessionManager2).GUID;
speakers.Activate(ref IID_IAudioSessionManager2, 0, IntPtr.Zero, out object o);
sm = (IAudioSessionManager2)o;
// Get sessions
sm.GetSessionEnumerator(out sessionEnumerator);
sessionEnumerator.GetCount(out int count);
// Get volume control
for (int i = 0; i < count; i++)
{
IAudioSessionControl2 ctl = null;
try
{
sessionEnumerator.GetSession(i, out ctl);
if (ctl == null)
{
continue;
}
// Get and compare process id
ctl.GetProcessId(out ctlPid);
if (p == ctlPid)
{
volumeControl = ctl as ISimpleAudioVolume;
break;
}
}
finally
{
if (volumeControl == null && ctl != null)
{
Marshal.ReleaseComObject(ctl); // Only release if not target session
}
}
}
}
finally
{
if (sessionEnumerator != null)
{
Marshal.ReleaseComObject(sessionEnumerator);
}
if (sm != null)
{
Marshal.ReleaseComObject(sm);
}
if (speakers != null)
{
Marshal.ReleaseComObject(speakers);
}
if (deviceEnumerator != null)
{
Marshal.ReleaseComObject(deviceEnumerator);
}
}
if (volumeControl != null)
{
return(new VolumeControl(ctlPid, volumeControl));
}
return(null);
}
/// <summary>
/// 音量操作のためのデータを取得します。
/// </summary>
/// <param name="processID">対象のプロセスID。</param>
/// <returns>データ。取得に失敗した場合は null。</returns>
private static ISimpleAudioVolume GetVolumeObject(uint processID)
{
ISimpleAudioVolume ret = null;
// スピーカーデバイスの取得
IMMDeviceEnumerator deviceEnumerator = (IMMDeviceEnumerator)(new MMDeviceEnumerator());
IMMDevice speakers;
deviceEnumerator.GetDefaultAudioEndpoint(EDataFlow.eRender, ERole.eMultimedia, out speakers);
// 列挙のためにセッションマネージャをアクティベート
Guid IID_IAudioSessionManager2 = typeof(IAudioSessionManager2).GUID;
object o;
speakers.Activate(ref IID_IAudioSessionManager2, 0, IntPtr.Zero, out o);
IAudioSessionManager2 mgr = (IAudioSessionManager2)o;
// セッションの列挙
IAudioSessionEnumerator sessionEnumerator;
mgr.GetSessionEnumerator(out sessionEnumerator);
int count;
sessionEnumerator.GetCount(out count);
for (int i = 0; i < count; i++)
{
IAudioSessionControl ctl;
IAudioSessionControl2 ctl2;
sessionEnumerator.GetSession(i, out ctl);
ctl2 = ctl as IAudioSessionControl2;
uint pid = uint.MaxValue;
if (ctl2 != null)
{
ctl2.GetProcessId(out pid);
}
if (pid == processID)
{
ret = ctl2 as ISimpleAudioVolume;
break;
}
if (ctl != null)
{
Marshal.ReleaseComObject(ctl);
}
if (ctl2 != null)
{
Marshal.ReleaseComObject(ctl2);
}
}
Marshal.ReleaseComObject(sessionEnumerator);
Marshal.ReleaseComObject(mgr);
Marshal.ReleaseComObject(speakers);
Marshal.ReleaseComObject(deviceEnumerator);
return(ret);
}
