/// <summary>Add an empty video stream to the file</summary>
/// <remarks>Compresses the stream without showing the codecs dialog</remarks>
/// <param name="compressOptions">Compression options</param>
/// <param name="frameRate">Frames per second</param>
/// <param name="firstFrame">Image to write into the stream as the first frame</param>
/// <returns>VideoStream object for the new stream</returns>
public VideoStream AddVideoStream(Avi.AVICOMPRESSOPTIONS compressOptions, double frameRate, Bitmap firstFrame)
{
VideoStream stream = new VideoStream(aviFile, compressOptions, frameRate, firstFrame);
streams.Add(stream);
return(stream);
}
/// <summary>Initialize a new VideoStream and add the first frame</summary>
/// <param name="aviFile">The file that contains the stream</param>
/// <param name="frameRate">Frames per second</param>
/// <param name="firstFrame">Image to write into the stream as the first frame</param>
public VideoStream(int aviFile, Avi.AVICOMPRESSOPTIONS compressOptions, double frameRate, Bitmap firstFrame)
{
CountFrames = 0;
FirstFrame = 0;
Initialize(aviFile, true, frameRate, firstFrame);
CreateStream(compressOptions);
AddFrame(firstFrame);
}
/// <summary>Copy all properties from one VideoStream to another one</summary>
/// <remarks>Used by EditableVideoStream</remarks>
/// <param name="frameSize"></param><param name="frameRate"></param>
/// <param name="width"></param><param name="height"></param>
/// <param name="countBitsPerPixel"></param>
/// <param name="countFrames"></param><param name="compressOptions"></param>
internal VideoStream(int frameSize, double frameRate, int width, int height, Int16 countBitsPerPixel, int countFrames, Avi.AVICOMPRESSOPTIONS compressOptions, bool writeCompressed)
{
FrameSize = frameSize;
FrameRate = frameRate;
Width = width;
Height = height;
CountBitsPerPixel = countBitsPerPixel;
CountFrames = countFrames;
this.compressOptions = compressOptions;
this.writeCompressed = writeCompressed;
FirstFrame = 0;
}
/// <summary>Create a compressed stream from an uncompressed stream</summary>
private void CreateCompressedStream(Avi.AVICOMPRESSOPTIONS options)
{
int result = Avi.AVIMakeCompressedStream(out compressedStream, aviStream, ref options, 0);
if (result != 0)
{
throw new Exception("Exception in AVIMakeCompressedStream: " + result);
}
compressOptions = options;
SetFormat(compressedStream);
}
/// <summary>Create a compressed stream from an uncompressed stream</summary>
private void CreateCompressedStream()
{
//display the compression options dialog...
Avi.AVICOMPRESSOPTIONS_CLASS options = new Avi.AVICOMPRESSOPTIONS_CLASS {
fccType = (uint)Avi.streamtypeVIDEO,
lpParms = IntPtr.Zero,
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);
//..or set static options
/*Avi.AVICOMPRESSOPTIONS opts = new Avi.AVICOMPRESSOPTIONS();
* opts.fccType = (UInt32)Avi.mmioStringToFOURCC("vids", 0);
* opts.fccHandler = (UInt32)Avi.mmioStringToFOURCC("CVID", 0);
* opts.dwKeyFrameEvery = 0;
* opts.dwQuality = 0; // 0 .. 10000
* opts.dwFlags = 0; // AVICOMRPESSF_KEYFRAMES = 4
* opts.dwBytesPerSecond= 0;
* opts.lpFormat = new IntPtr(0);
* opts.cbFormat = 0;
* opts.lpParms = new IntPtr(0);
* opts.cbParms = 0;
* opts.dwInterleaveEvery = 0;*/
//get the compressed stream
compressOptions = options.ToStruct();
int result = Avi.AVIMakeCompressedStream(out compressedStream, aviStream, ref compressOptions, 0);
if (result != 0)
{
throw new Exception("Exception in AVIMakeCompressedStream: " + result);
}
SetFormat(compressedStream);
}
/// <summary>Create a new stream</summary>
private void CreateStream(Avi.AVICOMPRESSOPTIONS options)
{
CreateStreamWithoutFormat();
CreateCompressedStream(options);
}
