public AutoCrop(string filename, UserSettings settings, ref CropInfo cropInfo)
{
InitializeComponent();
try
{
this.settings = settings;
this.cropInfo = cropInfo;
AviSynthScriptEnvironment asse = new AviSynthScriptEnvironment();
asc = asse.OpenScriptFile(filename);
if(asc.HasVideo)
{
System.Drawing.Size s = new Size(asc.VideoWidth, asc.VideoHeight);
this.ClientSize = s;
maxFrames = asc.num_frames;
// remove last ~10 minutes
if (maxFrames > 30000)
{
maxFrames -= 15000;
}
numericUpDownFrame.Maximum = maxFrames;
int step = 0;
step = maxFrames / nrFrames;
curFrame = step;
Monitor.Enter(drawLock);
bitmap = ReadFrameBitmap(asc, step);
bitmapCopy = new Bitmap(bitmap);
Monitor.Exit(drawLock);
}
}
catch (Exception ex)
{
cropInfo.error = true;
cropInfo.errorStr = ex.Message;
}
}
public Bitmap ReadFrameBitmap(AviSynthClip asc, int position)
{
Bitmap bmp = null;
try
{
bmp = new Bitmap(asc.VideoWidth, asc.VideoHeight, System.Drawing.Imaging.PixelFormat.Format24bppRgb);
// Lock the bitmap's bits.
Rectangle rect = new Rectangle(0, 0, bmp.Width, bmp.Height);
System.Drawing.Imaging.BitmapData bmpData =
bmp.LockBits(rect, System.Drawing.Imaging.ImageLockMode.ReadWrite,
bmp.PixelFormat);
try
{
// Get the address of the first line.
IntPtr ptr = bmpData.Scan0;
// Read data
asc.ReadFrame(ptr, bmpData.Stride, position);
}
finally
{
// Unlock the bits.
bmp.UnlockBits(bmpData);
}
bmp.RotateFlip(RotateFlipType.Rotate180FlipX);
return bmp;
}
catch (Exception)
{
if(bmp != null) bmp.Dispose();
throw;
}
}