public static string GetDeviceName(int device)
{
var caps = new WaveApi.WAVEOUTCAPS();
WaveApi.waveOutGetDevCaps((IntPtr)device, out caps, Marshal.SizeOf(caps));
return(caps.szPname);
}
public static IEnumerable<string> GetDevices()
{
var count = WaveApi.waveOutGetNumDevs();
for (var index = 0; index < count; index++)
{
var caps = new WaveApi.WAVEOUTCAPS();
WaveApi.waveOutGetDevCaps((IntPtr)index, out caps, Marshal.SizeOf(caps));
yield return caps.szPname;
}
}
void Play(double volume)
{
try
{
var hWaveOut = IntPtr.Zero;
unsafe
{
fixed(WaveApi.WAVEHDR *pHeader = &_header)
{
_waveOutProc = WaveOutProc;
Check(() => WaveApi.waveOutOpen(out hWaveOut, (IntPtr)(_device), ref _format, _waveOutProc, IntPtr.Zero, 0x30000));
Check(() => WaveApi.waveOutPrepareHeader(hWaveOut, ref _header, Marshal.SizeOf(_header)));
var monoVolume = (int)(0xFFFF * volume) & 0xFFFF;
var stereoVolume = (monoVolume << 16) + monoVolume;
var result = WaveApi.waveOutSetVolume(hWaveOut, stereoVolume);
if (_semaphoreInner.CurrentCount == 0)
{
Check(() => WaveApi.waveOutWrite(hWaveOut, ref _header, Marshal.SizeOf(_header)));
_semaphoreInner.Wait();
}
Check(() => WaveApi.waveOutReset(hWaveOut));
Check(() => WaveApi.waveOutUnprepareHeader(hWaveOut, ref _header, Marshal.SizeOf(_header)));
}
}
Check(() => WaveApi.waveOutClose(hWaveOut));
}
catch (WaveException)
{
}
Marshal.FreeHGlobal(_hGlobal);
_semaphoreOuter.Release();
}
public static int GetDeviceIndex(string device)
{
var count = WaveApi.waveOutGetNumDevs();
var index = 0;
var found = false;
while (index < count && !found)
{
var caps = new WaveApi.WAVEOUTCAPS();
WaveApi.waveOutGetDevCaps((IntPtr)index, out caps, Marshal.SizeOf(caps));
if (caps.szPname == device)
{
found = true;
}
else
{
index++;
}
}
return found ? index : -1;
}
