C# Definition:
Definition Untested!!
[StructLayout(LayoutKind.Sequential)]
public class WaveFormatExtensible
{
public ushort wFormatTag;
public ushort nChannels;
public uint nSamplesPerSec;
public uint nAvgBytesPerSec;
public ushort nBlockAlign;
public ushort wBitsPerSample;
public ushort cbSize;
public ushort wValidBitsPerSample;
public uint dwChannelMask;
public Guid SubFormat;
public WaveFormatExtensible(uint rate, uint bits, uint channels)
{
wFormatTag = 0xFFFE; //WAVE_FORMAT_EXTENSIBLE
nChannels = (ushort)channels;
nSamplesPerSec = rate;
wBitsPerSample = (ushort)bits;
cbSize = 22;
nBlockAlign = (ushort)(channels * (bits / 8));
nAvgBytesPerSec = nSamplesPerSec * nBlockAlign;
wValidBitsPerSample = wBitsPerSample;
dwChannelMask = 3; //Stereo
SubFormat = new Guid("00000001-0000-0010-8000-00aa00389b71");
}
}
VB Definition:
<StructLayout(LayoutKind.Sequential, pack:=1)> Public Structure WAVEFORMATEXTENSIBLE
Dim Format As WAVEFORMATEX
'union {
'WORD wValidBitsPerSample;
'WORD wSamplesPerBlock;
'WORD wReserved;
';} Samples;
Dim wUnionSamples As UInt16
Dim dwChannelMask As UInteger
Dim SubFormat As Guid
End Structure
User-Defined Field Types:
None.
Notes:
VB - wUnionSamples replaces the union of 3 values commented out above it as a union is not possible in VB - just put the value into wUnionSamples for whichever of the wValidBitsPerSample/wSamplesPerBlock/wReserved required based on the SubFormat.
