昨天的实现，效率非常低，基本要10s左右，今天重新改良了一下gif的Encoder,效率提高了不，基本实现了gif添加水印，但透明的gif在添加水印的时候仍然存在问题，有时间再研究研究
原gif
水印之后的图片为:
但是，透明背景的却有些问题
原图
水印后
改动的部分
protected void GetImagePixels()
{
int w = image.Width; int h = image.Height; // int type = image.GetType().; if ((w != width) || (h != height) )
{ // create new image with right size/format Image temp = new Bitmap(width, height); Graphics g = Graphics.FromImage(temp); g.DrawImage(image, 0, 0); image = temp; g.Dispose();
} /**//* ToDo: improve performance: use unsafe code */ pixels = new Byte[3 * image.Width * image.Height]; int count = 0; Bitmap tempBitmap = new Bitmap(image); int wh = image.Width; int he = image.Height; System.Drawing.Imaging.BitmapData bmpData = tempBitmap.LockBits(new Rectangle(0, 0, wh, he), System.Drawing.Imaging.ImageLockMode.ReadWrite, image.PixelFormat); unsafe { byte* p = (byte*)bmpData.Scan0.ToPointer(); for (int i = 0; i < 4 * wh * he; i += 4) { pixels[count] = *(p + i+2); count++; pixels[count] = *(p + i + 1); count++; pixels[count] = *(p + i ); count++; } } tempBitmap.UnlockBits(bmpData); //count = 0; //for (int th = 0; th < image.Height; th++) //{ // for (int tw = 0; tw < image.Width; tw++) // { // Color color = tempBitmap.GetPixel(tw, th); // pixels[count] = color.R; // count++; // pixels[count] = color.G; // count++; // pixels[count] = color.B; // count++; // } //} // pixels = ((DataBufferByte) image.getRaster().getDataBuffer()).getData();
}
