// mistelixvideosrc expects images in 24 bits (3 channels)
public void FromDataImageSurface(DataImageSurface img)
{
if (img.Format != Cairo.Format.Argb32)
throw new InvalidOperationException (String.Format ("SlideImage.FromCairo: unsupported format {0}", img.Format));
width = img.Width;
height = img.Height;
pixels = img.Get24bitsPixBuf ();
channels = 3;
stride = ((img.Width * channels) + 3) & ~3;
alpha = false;
}
void ProcessImage()
{
Logger.Debug ("SlideImage.ProcessImage. {0} Channels {1}", image, Channels);
if (Title == null || Title == string.Empty)
return;
Logger.Debug ("SlideImage.ProcessImage. Image {0}", image);
byte[] pix;
if (channels == 3) {
int src = 0;
byte [] source;
int stride_trg = 4 * width;
int len_trg = stride_trg * height;
source = Pixels;
pix = new byte [len_trg];
for (int trg = 0; trg < len_trg; trg = trg + 4) {
pix [trg] = source [src + 2];
pix [trg + 1] = source [src + 1];
pix [trg + 2] = source [src + 0];
pix [trg + 3] = 0xff;
src += 3;
}
} else
pix = Pixels;
DataImageSurface surface = new DataImageSurface (DataImageSurface.Allocate (pix), Cairo.Format.Argb32, width, height, stride);
Cairo.Context gr = new Cairo.Context (surface);
DrawImageLegend (gr, Title, offset_x, offset_y, w, h);
FromDataImageSurface (surface);
((IDisposable)gr).Dispose ();
((IDisposable)surface).Dispose ();
}
void ShowImage(DataImageSurface imageToShow)
{
using(Cairo.Context context = Gdk.CairoHelper.Create(this.GdkWindow)) {
Pattern pattern = new Pattern (imageToShow);
context.Source = pattern;
context.Paint ();
((IDisposable)pattern).Dispose ();
}
}
