/// <summary>
/// Pequeno teste conceitual utilizando a placa de som padrao
/// </summary>
public void teste()
{
Capture cap = new Capture(new DeviceInformation().DriverGuid);
CaptureBufferDescription desc = new CaptureBufferDescription();
CaptureBuffer buffer;
WaveFormat wf = new WaveFormat();
wf.BitsPerSample = 16;
wf.SamplesPerSecond = 44100;
wf.Channels = 2;
wf.BlockAlign = (short)(wf.Channels * wf.BitsPerSample / 8);
wf.AverageBytesPerSecond = wf.BlockAlign * wf.SamplesPerSecond;
wf.FormatTag = WaveFormatTag.Pcm;
desc.Format = wf;
desc.BufferBytes = SAMPLES * wf.BlockAlign;
buffer = new Microsoft.DirectX.DirectSound.CaptureBuffer(desc, cap);
buffer.Start(true);
zed:
Array samples = buffer.Read(0, typeof(Int16), LockFlag.FromWriteCursor, SAMPLE_FORMAT_ARRAY);
System.Console.WriteLine(samples.GetValue(0, 0, 0).ToString());
goto zed;
}
private void UpdateSignal()
{
while (true)
{
int TempFrameDelay = mFrameDelay;
int TempSampleDelay = mSampleDelay;
int LevelMax = 0;
try
{
Array SampleArray = mAudioBuffer.Read(0, typeof(Int16), LockFlag.FromWriteCursor, mSampleFormatArray);
for (int i = 0; i < mSamples; i++)
{
LevelMax += (int)Math.Abs((Int16)SampleArray.GetValue(i, 0, 0));
LevelMax += (int)Math.Abs((Int16)SampleArray.GetValue(i, 1, 0));
}
}
catch
{
LevelMax = 0;
}
Console.WriteLine(LevelMax);
LevelMax = LevelMax / (2 * mSamples);
double dbl = Int16.MaxValue / 100;
double preciselvl = LevelMax / dbl;
int level = (int)preciselvl;
// Console.WriteLine(" >> "+level );
if (level > 100)
{
level = 100;
}
if (OnVolumeChanged != null)
{
OnVolumeChanged(level);
}
/*double LedIncrement = Int16.MaxValue / totalLeds;
*
* //double AbsLeftStepSize = Math.Abs(LeftStepSize);
* //double AbsRightStepSize = Math.Abs(RightStepSize);
*
* double preciseLeftLevel = LeftMax / LedIncrement;
* double preciseRightLevel = RightMax / LedIncrement;
*
* leftLevel = (int)preciseLeftLevel;
* rightLevel = (int)preciseRightLevel;
*
* UpdateLevel(leftLevel, rightLevel);*/
System.Threading.Thread.Sleep(mSampleDelay);
}
}