protected int CloseFile()
{
lock (m_Lock)
{
if (m_Stream != null)
{
WaveFormatEx _wfx = Pins[0].CurrentMediaType;
int _size;
byte[] _buffer;
IntPtr _ptr;
OUTPUT_FILE_HEADER _header = new OUTPUT_FILE_HEADER();
_header.dwRiff = RIFF_TAG;
_header.dwFileSize = (uint)m_Stream.Length - 2 * 4;
_header.dwWave = WAVE_TAG;
_header.dwFormat = FMT__TAG;
_header.dwFormatLength = (uint)Marshal.SizeOf(_wfx);
_size = Marshal.SizeOf(_header);
_buffer = new byte[_size];
_ptr = Marshal.AllocCoTaskMem(_size);
Marshal.StructureToPtr(_header, _ptr, true);
Marshal.Copy(_ptr, _buffer, 0, _size);
m_Stream.Write(_buffer, 0, _size);
Marshal.FreeCoTaskMem(_ptr);
_size = Marshal.SizeOf(_wfx);
_buffer = new byte[_size];
_ptr = Marshal.AllocCoTaskMem(_size);
Marshal.StructureToPtr(_wfx, _ptr, true);
Marshal.Copy(_ptr, _buffer, 0, _size);
m_Stream.Write(_buffer, 0, _size);
Marshal.FreeCoTaskMem(_ptr);
OUTPUT_DATA_HEADER _data = new OUTPUT_DATA_HEADER();
_data.dwData = DATA_TAG;
_data.dwDataLength = (uint)(m_Stream.Length - Marshal.SizeOf(_header) - _header.dwFormatLength - Marshal.SizeOf(_data));
_size = Marshal.SizeOf(_data);
_buffer = new byte[_size];
_ptr = Marshal.AllocCoTaskMem(_size);
Marshal.StructureToPtr(_data, _ptr, true);
Marshal.Copy(_ptr, _buffer, 0, _size);
m_Stream.Write(_buffer, 0, _size);
Marshal.FreeCoTaskMem(_ptr);
m_Stream.Dispose();
m_Stream = null;
}
}
return(NOERROR);
}
protected int OpenFile()
{
if (m_Stream == null && m_sFileName != "" && Pins[0].IsConnected)
{
m_Stream = new FileStream(m_sFileName, FileMode.Create, FileAccess.Write, FileShare.Read);
WaveFormatEx _wfx = Pins[0].CurrentMediaType;
int _size;
byte[] _buffer;
IntPtr _ptr;
OUTPUT_FILE_HEADER _header = new OUTPUT_FILE_HEADER();
_header.dwRiff = RIFF_TAG;
_header.dwFileSize = 0;
_header.dwWave = WAVE_TAG;
_header.dwFormat = FMT__TAG;
_header.dwFormatLength = (uint)Marshal.SizeOf(_wfx);
_size = Marshal.SizeOf(_header);
_buffer = new byte[_size];
_ptr = Marshal.AllocCoTaskMem(_size);
Marshal.StructureToPtr(_header, _ptr, true);
Marshal.Copy(_ptr, _buffer, 0, _size);
m_Stream.Write(_buffer, 0, _size);
Marshal.FreeCoTaskMem(_ptr);
_size = Marshal.SizeOf(_wfx);
_buffer = new byte[_size];
_ptr = Marshal.AllocCoTaskMem(_size);
Marshal.StructureToPtr(_wfx, _ptr, true);
Marshal.Copy(_ptr, _buffer, 0, _size);
m_Stream.Write(_buffer, 0, _size);
Marshal.FreeCoTaskMem(_ptr);
OUTPUT_DATA_HEADER _data = new OUTPUT_DATA_HEADER();
_data.dwData = DATA_TAG;
_data.dwDataLength = 0;
_size = Marshal.SizeOf(_data);
_buffer = new byte[_size];
_ptr = Marshal.AllocCoTaskMem(_size);
Marshal.StructureToPtr(_data, _ptr, true);
Marshal.Copy(_ptr, _buffer, 0, _size);
m_Stream.Write(_buffer, 0, _size);
Marshal.FreeCoTaskMem(_ptr);
return(NOERROR);
}
return(S_FALSE);
}
