public static ThumbData ReadFromFile(string path)
{
if (!System.IO.File.Exists(path))
{
throw new System.ApplicationException("ファイルが存在していません。");
}
ThumbData ret = new ThumbData();
Bitmap bmp = new Bitmap(path);
ret.width = bmp.Width;
ret.height = bmp.Height;
ret.aspect = ret.width / (float)ret.height;
Bitmap thumb = new Bitmap(bmp.GetThumbnailImage(WIDTH, HEIGHT, delegate(){ return(true); }, System.IntPtr.Zero));
Img::BitmapData bmpdat = thumb.LockBits(rect88, System.Drawing.Imaging.ImageLockMode.ReadOnly, System.Drawing.Imaging.PixelFormat.Format32bppArgb);
long * d = (long *)ret.px;
long * M = (long *)(ret.px + PIXELS);
long * s = (long *)bmpdat.Scan0;
while (d < M)
{
*d++ = *s++;
}
thumb.UnlockBits(bmpdat);
thumb.Dispose();
bmp.Dispose();
return(ret);
}
public Bitmap GetThumbnailImage()
{
Bitmap ret = new Bitmap(WIDTH, HEIGHT, System.Drawing.Imaging.PixelFormat.Format32bppArgb);
Img::BitmapData data = ret.LockBits(rect88, Img::ImageLockMode.WriteOnly, Img::PixelFormat.Format32bppArgb);
// CHECK: data.Stride は 8*4 等でないと困る
fixed(int *b = this.px)
{
long *d = (long *)data.Scan0;
long *s = (long *)b;
long *M = (long *)(b + PIXELS);
while (s < M)
{
*d++ = *s++;
}
}
ret.UnlockBits(data);
return(ret);
}
