public static PlatformBitmap From(Stream bitmapStream, bool isOpaque)
{
if (Environment.OSVersion.Platform == PlatformID.WinCE && !isOpaque)
{
//return new StandardBitmap(OptimizeBitmap(bitmapStream));
if (myImagingFactory == null)
{
myImagingFactory = (IImagingFactory)Activator.CreateInstance(Type.GetTypeFromCLSID(new Guid("327ABDA8-072B-11D3-9D7B-0000F81EF32E")));
}
byte[] bytes = new byte[bitmapStream.Length];
bitmapStream.Read(bytes, 0, (int)bitmapStream.Length);
IImage imagingResource;
uint hresult = myImagingFactory.CreateImageFromBuffer(bytes, (uint)bitmapStream.Length, BufferDisposalFlag.BufferDisposalFlagNone, out imagingResource);
IBitmapImage bitmap;
myImagingFactory.CreateBitmapFromImage(imagingResource, 0, 0, PixelFormatID.PixelFormat32bppARGB, InterpolationHint.InterpolationHintDefault, out bitmap);
Marshal.FinalReleaseComObject(imagingResource);
imagingResource = bitmap as IImage;
return(new WindowsCEBitmap(imagingResource));
}
else
{
return(new StandardBitmap(bitmapStream));
}
}
public WinCEImagingBitmap(Stream stream)
{
// this class should only be used in WinCE
System.Diagnostics.Debug.Assert(Environment.OSVersion.Platform == PlatformID.WinCE);
if (myImagingFactory == null)
{
myImagingFactory =
(IImagingFactory)Activator.CreateInstance(
Type.GetTypeFromCLSID(new Guid("327ABDA8-072B-11D3-9D7B-0000F81EF32E")));
}
int bytesLength;
byte[] bytes;
MemoryStream memStream = stream as MemoryStream;
if (memStream != null)
{
bytesLength = (int)memStream.Length;
bytes = memStream.GetBuffer();
}
else
{
bytesLength = (int)stream.Length;
bytes = new byte[bytesLength];
stream.Read(bytes, 0, bytesLength);
}
uint hresult = myImagingFactory.CreateImageFromBuffer(bytes,
(uint)bytesLength,
BufferDisposalFlag.BufferDisposalFlagNone,
out myImage);
myImage.GetImageInfo(out myInfo);
myScaleFactorX = 1 / myInfo.Xdpi * 2540;
myScaleFactorY = 1 / myInfo.Ydpi * 2540;
IBitmapImage bitmap;
myImagingFactory.CreateBitmapFromImage(myImage,
0,
0,
PixelFormatID.PixelFormat32bppARGB,
InterpolationHint.InterpolationHintDefault,
out bitmap);
Marshal.FinalReleaseComObject(myImage);
myImage = bitmap as IImage;
}
unsafe public static BitmapLoadData BeginLoadBitmap(Stream bitmapStream, bool isTransparent)
{
// .NET CF does NOT support transparent images. Need to use the COM IImageFactory to create images with alpha.
if (myImagingFactory == null)
{
myImagingFactory = (IImagingFactory)Activator.CreateInstance(Type.GetTypeFromCLSID(new Guid("327ABDA8-072B-11D3-9D7B-0000F81EF32E")));
}
int bytesLength;
byte[] bytes;
MemoryStream memStream = bitmapStream as MemoryStream;
if (memStream != null)
{
bytesLength = (int)memStream.Length;
bytes = memStream.GetBuffer();
}
else
{
bytesLength = (int)bitmapStream.Length;
bytes = new byte[bytesLength];
bitmapStream.Read(bytes, 0, bytesLength);
}
IImage image;
ImageInfo info;
uint hresult = myImagingFactory.CreateImageFromBuffer(bytes, (uint)bytesLength, BufferDisposalFlag.BufferDisposalFlagNone, out image);
image.GetImageInfo(out info);
int resizedWidth = (int)info.Width;
int resizedHeight = (int)info.Height;
resizedWidth = Texture.GetValidTextureDimensionFromSize(resizedWidth);
resizedHeight = Texture.GetValidTextureDimensionFromSize(resizedHeight);
int resizedDim = Math.Max(resizedWidth, resizedHeight);
if (resizedDim == (int)info.Width && resizedDim == (int)info.Height)
{
resizedWidth = 0;
resizedHeight = 0;
}
else
{
resizedWidth = resizedDim;
resizedHeight = resizedDim;
}
IBitmapImage bitmap;
myImagingFactory.CreateBitmapFromImage(image, (uint)resizedWidth, (uint)resizedHeight, PixelFormatID.PixelFormatDontCare, InterpolationHint.InterpolationHintDefault, out bitmap);
Marshal.FinalReleaseComObject(image);
Size size;
bitmap.GetSize(out size);
RECT rect = new RECT(0, 0, size.Width, size.Height);
BitmapImageData data;
if (isTransparent)
{
bitmap.LockBits(ref rect, ImageLockMode.ImageLockModeWrite | ImageLockMode.ImageLockModeRead, PixelFormatID.PixelFormat32bppARGB, out data);
for (int y = 0; y < data.Height; y++)
{
for (int x = 0; x < data.Stride; x += 4)
{
byte *bp = (byte *)data.Scan0 + data.Stride * y + x;
byte temp = bp[0];
bp[0] = bp[2];
bp[2] = temp;
}
}
}
else
{
bitmap.LockBits(ref rect, ImageLockMode.ImageLockModeRead, PixelFormatID.PixelFormat16bppRGB565, out data);
}
BitmapLoadData ret = new BitmapLoadData();
ret.Data = data;
ret.Bitmap = bitmap;
ret.Width = (int)info.Width;
ret.Height = (int)info.Height;
ret.IsTransparent = isTransparent;
return(ret);
}