/// <summary>Creates a new video stream in the AVI file</summary>
private void CreateStream()
{
Avi.AVISTREAMINFO strhdr = new Avi.AVISTREAMINFO();
strhdr.fccType = fccType;
strhdr.fccHandler = fccHandler;
strhdr.dwScale = 1;
strhdr.dwRate = frameRate;
strhdr.dwSuggestedBufferSize = (UInt32)(height * stride);
strhdr.dwQuality = 10000; //highest quality! Compression destroys the hidden message
strhdr.rcFrame.bottom = (UInt32)height;
strhdr.rcFrame.right = (UInt32)width;
strhdr.szName = new UInt16[64];
int result = Avi.AVIFileCreateStream(aviFile, out aviStream, ref strhdr);
if (result != 0)
{
throw new Exception("Error in AVIFileCreateStream: " + result.ToString());
}
//define the image format
Avi.BITMAPINFOHEADER bi = new Avi.BITMAPINFOHEADER();
bi.biSize = (UInt32)Marshal.SizeOf(bi);
bi.biWidth = (Int32)width;
bi.biHeight = (Int32)height;
bi.biPlanes = 1;
bi.biBitCount = 32;
bi.biSizeImage = (UInt32)(stride * height);
oldStream = aviStream;
aviStream = CreateCompressedStream(aviStream);
result = Avi.AVIStreamSetFormat(aviStream, 0, ref bi, Marshal.SizeOf(bi));
if (result != 0)
{
throw new Exception("Error in AVIStreamSetFormat: " + result.ToString());
}
}
