protected DecodeResult Decode(WriteableBitmap input)
{
var img = new Image {
Source = input
};
var w = (int)ClosestPowerOfTwo(input.PixelWidth);
var h = (int)ClosestPowerOfTwo(input.PixelHeight);
var id = new ImageCodec.ImageData
{
width = w,
height = h,
depth = 1,
size = 0,
numMipMaps = -1,
format = PixelFormat.BYTE_BGRA
};
for (int i = System.Math.Min(w, h), s = w * h; i > 0; i >>= 1, s >>= 2, id.numMipMaps++)
{
id.size += s;
}
var bp = new byte[id.size * 4];
var ofs = 0;
#if DEBUGMIPMAPS
var cval = new[] { 0xFFF00000, 0xFF00F100, 0xFF0000F2, 0xFFF3F300, 0xFF00F4F4, 0xFFF500F5, 0xFFF6F6F6 };
var cidx = 0;
#endif
while (ofs < bp.Length)
{
var wb = new WriteableBitmap(img, new ScaleTransform
{
ScaleX = ((double)w) / input.PixelWidth,
ScaleY = ((double)h) / input.PixelHeight
});
wb.Invalidate();
#if DEBUGMIPMAPS
var c = (int)cval[cidx % cval.Length];
for (var i = 0; i < wb.Pixels.Length; i++)
{
wb.Pixels[i] = c;
}
cidx++;
#endif
var len = w * h * 4;
Buffer.BlockCopy(wb.Pixels, 0, bp, ofs, len);
ofs += len;
w >>= 1;
h >>= 1;
}
return(new DecodeResult(new MemoryStream(bp), id));
}
public void Save(string fileName, PixelFormat requestedFormat)
{
// create a memory stream, setting the initial capacity
MemoryStream bufferStream = new MemoryStream(width * height * 3);
// save the data to the memory stream
Save(bufferStream, requestedFormat);
int pos = fileName.LastIndexOf('.');
// grab the file extension
string extension = fileName.Substring(pos + 1);
// grab the codec for the requested file extension
ICodec codec = CodecManager.Instance.GetCodec(extension);
// setup the image file information
ImageCodec.ImageData imageData = new ImageCodec.ImageData();
imageData.width = width;
imageData.height = height;
imageData.format = requestedFormat;
// reset the stream position
bufferStream.Position = 0;
// finally, save to file as an image
codec.EncodeToFile(bufferStream, fileName, imageData);
bufferStream.Close();
}
protected DecodeResult Decode(ExtendedImage input)
{
var w = (int)ClosestPowerOfTwo(input.PixelWidth);
var h = (int)ClosestPowerOfTwo(input.PixelHeight);
var id = new ImageCodec.ImageData
{
width = w,
height = h,
depth = 1,
size = 0,
numMipMaps = -1,
format = PixelFormat.A8B8G8R8
};
for (int i = System.Math.Min(w, h), s = w * h; i > 0; i >>= 1, s >>= 2, id.numMipMaps++)
{
id.size += s;
}
var bp = new byte[id.size * 4];
var ofs = 0;
#if DEBUGMIPMAPS
var cval = new[] { 0xFFF00000, 0xFF00F100, 0xFF0000F2, 0xFFF3F300, 0xFF00F4F4, 0xFFF500F5, 0xFFF6F6F6 };
var cidx = 0;
#endif
while (ofs < bp.Length)
{
var wb = ExtendedImage.Resize(input, w, h, Resizer);
#if DEBUGMIPMAPS
var c = (int)cval[cidx % cval.Length];
for (var i = 0; i < wb.Pixels.Length; i++)
{
wb.Pixels[i] = c;
}
cidx++;
#endif
var len = w * h * 4;
Buffer.BlockCopy(wb.Pixels, 0, bp, ofs, len);
ofs += len;
w >>= 1;
h >>= 1;
}
return(new DecodeResult(new MemoryStream(bp), id));
}
