internal static void WaveInProc(IntPtr hdrvr, int uMsg, int dwUser, ref WaveNative.WaveHdr wavhdr, int dwParam2)
{
if (uMsg == WaveNative.MmWimData)
{
try
{
GCHandle h = (GCHandle)wavhdr.dwUser;
WaveInBuffer buf = (WaveInBuffer)h.Target;
buf.OnCompleted();
}
catch
{
// ignored
}
}
}
private void FreeBuffers()
{
_mCurrentBuffer = null;
if (_mBuffers == null)
{
return;
}
var first = _mBuffers;
_mBuffers = null;
var current = first;
do
{
var next = current.NextBuffer;
current.Dispose();
current = next;
} while (current != first);
}
private void AllocateBuffers(int bufferSize, int bufferCount)
{
FreeBuffers();
if (bufferCount > 0)
{
_mBuffers = new WaveInBuffer(_mWaveIn, bufferSize);
var prev = _mBuffers;
try
{
for (var i = 1; i < bufferCount; i++)
{
var buf = new WaveInBuffer(_mWaveIn, bufferSize);
prev.NextBuffer = buf;
prev = buf;
}
}
finally
{
prev.NextBuffer = _mBuffers;
}
}
}
private void SelectNextBuffer()
{
_mCurrentBuffer = _mCurrentBuffer == null ? _mBuffers : _mCurrentBuffer.NextBuffer;
}