private void SetOptions()
{
AVICOMPRESSOPTIONS compressionOptions = new AVICOMPRESSOPTIONS();
compressionOptions.fccType = _fccType;
compressionOptions.fccHandler = _fccHandler;
compressionOptions.lpFormat = new IntPtr(0);
compressionOptions.lpParms = new IntPtr(0);
/*
* AVICOMPRESSOPTIONS* p = &compressionOptions;
* AVICOMPRESSOPTIONS** pp = &p;
*
* IntPtr i = _aviStream;
* IntPtr* ii = &i;
*
* _result = AviFile.AVISaveOptions(0, 0, 1, ii, pp);
*
* if(_result != 0)
* {
* throw new AviException("Failed to save AVI encoding options.", _result);
* }
*/
_result = AviFile.AVIMakeCompressedStream(out _aviStreamCompressed, _aviStream, ref compressionOptions, 0);
if (_result != 0)
{
throw new AviException("Failed to create compressed AVI stream.", _result);
}
BITMAPINFOHEADER streamFormat = new BITMAPINFOHEADER();
streamFormat.biSize = 40;
streamFormat.biWidth = (Int32)_width;
streamFormat.biHeight = (Int32)_height;
streamFormat.biPlanes = 1;
streamFormat.biBitCount = 24;
streamFormat.biSizeImage = _stride * _height;
_result = AviFile.AVIStreamSetFormat(_aviStreamCompressed, 0, ref streamFormat, 40);
if (_result != 0)
{
throw new AviException("Failed to set AVI stream format.", _result);
}
}
public void Close()
{
if (_aviStream.ToInt32() != 0)
{
AviFile.AVIStreamRelease(_aviStream);
}
if (_aviStreamCompressed.ToInt32() != 0)
{
AviFile.AVIStreamRelease(_aviStreamCompressed);
}
if (_aviFile != 0)
{
AviFile.AVIFileRelease(_aviFile);
}
AviFile.AVIFileExit();
}
private void CreateStream()
{
AVISTREAMINFOW aviStreamInfo = new AVISTREAMINFOW();
aviStreamInfo.fccType = _fccType;
aviStreamInfo.fccHandler = _fccHandler;
aviStreamInfo.dwScale = 1;
aviStreamInfo.dwRate = _frameRate;
aviStreamInfo.dwSuggestedBufferSize = _height * _stride;
aviStreamInfo.dwQuality = 0xffffffff;
aviStreamInfo.rect_bottom = _height;
aviStreamInfo.rect_right = _width;
_result = AviFile.AVIFileCreateStream(_aviFile, out _aviStream, ref aviStreamInfo);
if (_result != 0)
{
throw new AviException("Failed to create AVI stream.", _result);
}
}
public void WriteFrame(Bitmap frame)
{
if (_frameCount == 0)
{
CreateStream();
SetOptions();
}
frame.RotateFlip(RotateFlipType.RotateNoneFlipY);
BitmapData frameData = frame.LockBits(new Rectangle(0, 0, (int)_width, (int)_height), ImageLockMode.ReadOnly, PixelFormat.Format24bppRgb);
_result = AviFile.AVIStreamWrite(_aviStreamCompressed, _frameCount, 1, frameData.Scan0, (Int32)(_stride * _height), 0, 0, 0);
if (_result != 0)
{
throw new AviException("Failed to write frame to AVI.", _result);
}
frame.UnlockBits(frameData);
_frameCount++;
}
public AviWriter(string path, UInt32 compression, UInt32 frameRate, int width, int height)
{
_fccType = AviCompression.GetFourCC("vids");
_fccHandler = compression;
_frameRate = frameRate;
_width = (UInt32)width;
_height = (UInt32)height;
Bitmap bmp = new Bitmap(width, height, PixelFormat.Format24bppRgb);
BitmapData bmpData = bmp.LockBits(new Rectangle(0, 0, width, height), ImageLockMode.ReadOnly, PixelFormat.Format24bppRgb);
_stride = (UInt32)bmpData.Stride;
bmp.UnlockBits(bmpData);
AviFile.AVIFileInit();
_result = AviFile.AVIFileOpenW(ref _aviFile, path, (int)AviOpenMode.CreateWrite, 0);
if (_result != 0)
{
throw new AviException("Failed to open AVI file.", _result);
}
}
