private void WriteFormatBlock()
{
MMCKINFO mmckinfoParentIn = new MMCKINFO();
// Get format info
mmckinfoParentIn.ckid = new FourCC("fmt ");
mmckinfoParentIn.ckSize = FORMATBLOCKSIZE;
MMIOError rc = MMIO.CreateChunk(m_OutputFile, mmckinfoParentIn, RiffChunkFlags.None);
MMIO.ThrowExceptionForError(rc);
IntPtr ip = Marshal.AllocCoTaskMem(FORMATBLOCKSIZE);
try
{
Marshal.StructureToPtr(m_wfe, ip, false);
int iBytes = MMIO.Write(m_OutputFile, ip, FORMATBLOCKSIZE);
if (iBytes < 0)
{
throw new Exception("mmioWrite failed");
}
}
finally
{
Marshal.FreeCoTaskMem(ip);
}
rc = MMIO.Ascend(m_OutputFile, mmckinfoParentIn, 0);
MMIO.ThrowExceptionForError(rc);
}
private void WriteDataBlock()
{
MMCKINFO mmckinfoSubchunkIn = new MMCKINFO();
mmckinfoSubchunkIn.ckid = new FourCC("data");
mmckinfoSubchunkIn.ckSize = m_AudioLength;
MMIOError rc = MMIO.CreateChunk(m_OutputFile, mmckinfoSubchunkIn, 0);
MMIO.ThrowExceptionForError(rc);
}
private void WriteWaveHeader()
{
MMCKINFO mmckinfoParentIn = new MMCKINFO();
mmckinfoParentIn.fccType = new FourCC("WAVE");
mmckinfoParentIn.ckSize = m_AudioLength + m_DataOffset - 8;
MMIOError rc = MMIO.CreateChunk(m_OutputFile, mmckinfoParentIn, RiffChunkFlags.CreateRiff);
MMIO.ThrowExceptionForError(rc);
}
