/// <inheritdoc/>
void IDisposable.Dispose()
{
lock (syncLock)
{
stream.Dispose();
frame.Dispose();
}
}
/// <inheritdoc/>
public void Dispose()
{
if (isDisposed)
{
return;
}
stream.Dispose();
frame.Dispose();
fixed(SwrContext **ptr = &swrContext)
{
ffmpeg.swr_free(ptr);
}
isDisposed = true;
}
private void DrawVisualization(AudioFrame dataFrame, CanvasDrawingSession ds, bool bDrawVU, bool bDrawLeftChannel, bool bDrawRightChannel, Vector2 barSize, Vector2 offset)
{
if (dataFrame != null)
{
using (var data = dataFrame.AsVisualizationData())
{
if (bDrawVU)
{
DrawVU(ds, data.GetRMS(0), data.GetRMS(1));
}
DrawSpectrogram(data, ds, bDrawLeftChannel, bDrawRightChannel, barSize, offset);
}
dataFrame.Dispose();
}
else
{
if (bDrawVU)
{
DrawVU(ds, -100.0f, -100.0f);
}
DrawSpectrogram(null, ds, bDrawLeftChannel, bDrawRightChannel, barSize, offset);
}
}
public void Dispose()
{
media.Dispose();
frame.Dispose();
}
unsafe private void Timer_Tick(object sender, object e)
{
try
{
AudioFrame audioFrame = frameOutputNode.GetFrame();
using (AudioBuffer buffer = audioFrame.LockBuffer(AudioBufferAccessMode.Read))
using (IMemoryBufferReference memoryBufferReference = buffer.CreateReference())
{
byte * dataInBytes;
uint capacityInBytes;
float *dataInFloat;
((IMemoryBufferByteAccess)memoryBufferReference).GetBuffer(out dataInBytes, out capacityInBytes);
dataInFloat = (float *)dataInBytes;
Int32 pulseOn = 0;
Int32 pulseOff = 0;
Boolean transitionUpFound = false;
Boolean transitionDownFound = false;
Int32 transitionCount = 0;
periodLength = 0;
Boolean high = dataInFloat[0] > 0;
for (Int32 i = 0; i < capacityInBytes / 8; i++)
{
if (dataInFloat[i] != 0)
{
if (dataInFloat[i] < -0.05) // If low
{
if (high) // If was high
{
transitionDownFound = true;
transitionCount++;
}
high = false;
}
else if (dataInFloat[i] > 0.05) // Is high
{
if (!high) // If was low
{
transitionUpFound = true;
transitionCount++;
}
high = true;
}
if (transitionCount > 2)
{
periodLength = (int)((pulseOn + pulseOff) / 9.27);
break;
}
if (high && transitionUpFound)
{
pulseOn++;
}
else if (!high && transitionDownFound)
{
pulseOff++;
}
}
}
dataInFloat = null;
dataInBytes = null;
memoryBufferReference.Dispose();
buffer.Dispose();
audioFrame.Dispose();
periodLengthUK101 = periodLength;
}
} catch { }
//audioFrame = frameOutputNode.GetFrame();
audioGraph.Stop();
audioGraph.ResetAllNodes();
audioGraph.Start();
}
/// <summary>
/// Releases all unmanaged resources associated with this instance.
/// </summary>
public void Dispose()
{
frame.Dispose();
}
