/// <summary>Create a new stream</summary>
private void CreateStreamWithoutFormat()
{
int scale = 1;
double rate = this.frameRate;
this.GetRateAndScale(ref rate, ref scale);
Avi.AVISTREAMINFO strhdr = new Avi.AVISTREAMINFO();
strhdr.fccType = Avi.mmioStringToFOURCC("vids", 0);
strhdr.fccHandler = Avi.mmioStringToFOURCC("CVID", 0);
strhdr.dwFlags = 0;
strhdr.dwCaps = 0;
strhdr.wPriority = 0;
strhdr.wLanguage = 0;
strhdr.dwScale = (int)scale;
strhdr.dwRate = (int)rate; // Frames per Second
strhdr.dwStart = 0;
strhdr.dwLength = 0;
strhdr.dwInitialFrames = 0;
strhdr.dwSuggestedBufferSize = this.frameSize; //height_ * stride_;
strhdr.dwQuality = -1; //default
strhdr.dwSampleSize = 0;
strhdr.rcFrame.top = 0;
strhdr.rcFrame.left = 0;
strhdr.rcFrame.bottom = (uint)this.height;
strhdr.rcFrame.right = (uint)this.width;
strhdr.dwEditCount = 0;
strhdr.dwFormatChangeCount = 0;
strhdr.szName = new UInt16[64];
int result = Avi.AVIFileCreateStream(this.aviFile, out this.aviStream, ref strhdr);
if (result != 0)
{
throw new Exception("Exception in AVIFileCreateStream: " + result.ToString());
}
}
/// <summary>Copy the stream into a new file</summary>
/// <param name="fileName">Name of the new file</param>
public override void ExportStream(String fileName)
{
Avi.AVICOMPRESSOPTIONS_CLASS opts = new Avi.AVICOMPRESSOPTIONS_CLASS();
opts.fccType = (UInt32)Avi.mmioStringToFOURCC("auds", 0);
opts.fccHandler = (UInt32)Avi.mmioStringToFOURCC("CAUD", 0);
opts.dwKeyFrameEvery = 0;
opts.dwQuality = 0;
opts.dwFlags = 0;
opts.dwBytesPerSecond = 0;
opts.lpFormat = new IntPtr(0);
opts.cbFormat = 0;
opts.lpParms = new IntPtr(0);
opts.cbParms = 0;
opts.dwInterleaveEvery = 0;
Avi.AVISaveV(fileName, 0, 0, 1, ref this.aviStream, ref opts);
}
/// <summary>Create a compressed stream from an uncompressed stream</summary>
private void CreateCompressedStream(bool dialog)
{
Avi.AVICOMPRESSOPTIONS structOptions;
if (dialog)
{
//display the compression options dialog...
Avi.AVICOMPRESSOPTIONS_CLASS options = new Avi.AVICOMPRESSOPTIONS_CLASS();
options.fccType = (uint)Avi.streamtypeVIDEO;
options.lpParms = IntPtr.Zero;
options.lpFormat = IntPtr.Zero;
Avi.AVISaveOptions(IntPtr.Zero, Avi.ICMF_CHOOSE_KEYFRAME | Avi.ICMF_CHOOSE_DATARATE, 1, ref aviStream, ref options);
Avi.AVISaveOptionsFree(1, ref options);
structOptions = options.ToStruct();
}
else
{
//..or set static options
structOptions.fccType = (UInt32)Avi.mmioStringToFOURCC("vids", 0);
structOptions.fccHandler = (UInt32)Avi.mmioStringToFOURCC("CVID", 0);
structOptions.dwKeyFrameEvery = 0;
structOptions.dwQuality = 0; // 0 .. 10000
structOptions.dwFlags = 0; // AVICOMRPESSF_KEYFRAMES = 4
structOptions.dwBytesPerSecond = 0;
structOptions.lpFormat = new IntPtr(0);
structOptions.cbFormat = 0;
structOptions.lpParms = new IntPtr(0);
structOptions.cbParms = 0;
structOptions.dwInterleaveEvery = 0;
}
//get the compressed stream
int result = Avi.AVIMakeCompressedStream(out compressedStream, aviStream, ref structOptions, 0);
if (result != 0)
{
throw new Exception("Exception in AVIMakeCompressedStream: " + result.ToString());
}
SetFormat(compressedStream);
}
/// <summary>Create a new stream</summary>
private void CreateStream()
{
Avi.AVISTREAMINFO strhdr = new Avi.AVISTREAMINFO();
strhdr.fccType = Avi.mmioStringToFOURCC("vids", 0);
strhdr.fccHandler = Avi.mmioStringToFOURCC("CVID", 0);
strhdr.dwFlags = 0;
strhdr.dwCaps = 0;
strhdr.wPriority = 0;
strhdr.wLanguage = 0;
strhdr.dwScale = 1;
strhdr.dwRate = frameRate; // Frames per Second
strhdr.dwStart = 0;
strhdr.dwLength = 0;
strhdr.dwInitialFrames = 0;
strhdr.dwSuggestedBufferSize = frameSize; //height_ * stride_;
strhdr.dwQuality = -1; //default
strhdr.dwSampleSize = 0;
strhdr.rcFrame.top = 0;
strhdr.rcFrame.left = 0;
strhdr.rcFrame.bottom = (uint)height;
strhdr.rcFrame.right = (uint)width;
strhdr.dwEditCount = 0;
strhdr.dwFormatChangeCount = 0;
strhdr.szName = new UInt16[64];
int result = Avi.AVIFileCreateStream(aviFile, out aviStream, ref strhdr);
if (result != 0)
{
throw new Exception("Exception in AVIFileCreateStream: " + result.ToString());
}
if (writeCompressed)
{
CreateCompressedStream(false);
}
else
{
SetFormat(aviStream);
}
}
