public unsafe void SampleBlockConversions()
{
SampleBlock reference16Bit;
using (MediaFoundationReader reference16BitReader = new MediaFoundationReader(TestConstant.ReferenceFilePath16Bit))
{
byte[] buffer16Bit = new byte[reference16BitReader.Length];
int bytesRead = reference16BitReader.Read(buffer16Bit, 0, buffer16Bit.Length);
reference16Bit = new SampleBlock(buffer16Bit, bytesRead, SampleTypeExtensions.FromBitsPerSample(reference16BitReader.WaveFormat.BitsPerSample));
}
SampleBlock reference24Bit;
using (MediaFoundationReader reference24BitReader = new MediaFoundationReader(TestConstant.ReferenceFilePath24Bit))
{
byte[] buffer24Bit = new byte[reference24BitReader.Length];
int bytesRead = reference24BitReader.Read(buffer24Bit, 0, buffer24Bit.Length);
reference24Bit = new SampleBlock(buffer24Bit, bytesRead, SampleTypeExtensions.FromBitsPerSample(reference24BitReader.WaveFormat.BitsPerSample));
}
Assert.IsTrue(reference16Bit.Int16Samples == reference24Bit.SamplesInUse);
SampleBlock reference16BitAsDouble = reference16Bit.ConvertTo(SampleType.Double);
SampleBlock reference16BitAsQ31 = reference16Bit.ConvertTo(SampleType.Int32);
SampleBlock reference24BitAsDouble = reference24Bit.ConvertTo(SampleType.Double);
SampleBlock reference24BitAsQ31 = reference24Bit.ConvertTo(SampleType.Int32);
Assert.IsTrue(reference16Bit.Int16Samples == reference16BitAsDouble.DoubleSamples);
Assert.IsTrue(reference16Bit.Int16Samples == reference16BitAsQ31.Int32Samples);
Assert.IsTrue(reference16Bit.Int16Samples == reference24BitAsDouble.DoubleSamples);
Assert.IsTrue(reference16Bit.Int16Samples == reference24BitAsQ31.Int32Samples);
for (int sample = 0; sample < reference16Bit.Int16Samples; ++sample)
{
Assert.IsTrue(((int)reference16Bit.Int16s[sample] << TestConstant.ShiftBetween16BitSamplesAndQ31) == reference16BitAsQ31.Int32s[sample]);
Assert.IsTrue((int)reference16BitAsDouble.Doubles[sample] == reference16BitAsQ31.Int32s[sample]);
Assert.IsTrue((reference24Bit.GetInt24AsInt32(sample) << TestConstant.ShiftBetween24BitSamplesAndQ31) == reference24BitAsQ31.Int32s[sample]);
Assert.IsTrue((int)reference24BitAsDouble.Doubles[sample] == reference24BitAsQ31.Int32s[sample]);
}
}
