public void Compare_Access_Patterns()
{
int runs = 1000;
var stopWatch = new Stopwatch();
var numSamples = 1024;
var fixture = new AudioSampleBuffer(1, numSamples);
stopWatch.Start();
for (int i = 0; i != runs; ++i)
{
for (int j = 0; j < numSamples; j++)
{
if (_testBuffer[0][j] != 0)
{
Assert.Fail();
}
}
}
stopWatch.Stop();
var arrayTime = stopWatch.ElapsedTicks;
stopWatch.Restart();
for (int i = 0; i != runs; ++i)
{
var readPtr = fixture.GetReadPointer(0);
for (int j = 0; j < numSamples; j++)
{
if (*(readPtr++) != 0)
{
Assert.Fail();
}
}
}
stopWatch.Stop();
var pointerTime = stopWatch.ElapsedTicks;
stopWatch.Restart();
for (int i = 0; i != runs; ++i)
{
for (int j = 0; j < numSamples; j++)
{
if (fixture.GetSample(0, j) != 0)
{
Assert.Fail();
}
}
}
stopWatch.Stop();
var accessorTime = stopWatch.ElapsedTicks;
fixture.Dispose();
Console.WriteLine("Pointer: {0} vs Accessor: {1} vs Array: {2}", pointerTime, accessorTime, arrayTime);
}
public void Can_Write_And_Read_Back()
{
var fixture = new AudioSampleBuffer(2, 1024);
var writePtr = fixture.GetWritePointer(0);
(*writePtr) = 126.0f;
Assert.AreEqual(126.0f, *fixture.GetReadPointer(0));
fixture.Dispose();
}