public static int GetArrayBufferSize(Array buffer)
{
if (buffer == null)
{
throw new ArgumentNullException("buffer");
}
int elementSize = WicUtility.GetElementSize(buffer);
return(elementSize * buffer.Length);
}
public static float ComputeDownScale(this IWICBitmapSource imageSource, int targetSize, Func <float, float, float> sizeSelector = null)
{
if (imageSource == null)
{
throw new ArgumentNullException("imageSource");
}
int width;
int height;
imageSource.GetSize(out width, out height);
return(WicUtility.ComputeDownScale(width, height, targetSize, sizeSelector));
}
public static int GetArrayStride(Array buffer, int width, int height)
{
if (width <= 0)
{
throw new ArgumentOutOfRangeException("width");
}
if (height <= 0)
{
throw new ArgumentOutOfRangeException("height");
}
int elementSize = WicUtility.GetElementSize(buffer);
return(elementSize * width);
}
public static IWICBitmap CreateBitmapFromBlob(this IWICImagingFactory factory, Array blob, int width, int height, int stride, Guid imageFormat)
{
if (factory == null)
{
throw new ArgumentNullException("factory");
}
if (blob == null)
{
throw new ArgumentNullException("blob");
}
int arrayBufferSize = WicUtility.GetArrayBufferSize(blob);
IWICBitmap result;
using (PinHelper pinHelper = new PinHelper(blob))
{
factory.CreateBitmapFromMemory(width, height, ref imageFormat, stride, arrayBufferSize, pinHelper.Addr, out result);
}
return(result);
}
public static void FillBlobFromBitmapSource(this IWICBitmapSource bitmap, Array blob)
{
if (bitmap == null)
{
throw new ArgumentNullException("bitmap");
}
if (blob == null)
{
throw new ArgumentNullException("blob");
}
WICRect wicrect = default(WICRect);
bitmap.GetSize(out wicrect.Width, out wicrect.Height);
int arrayStride = WicUtility.GetArrayStride(blob, wicrect.Width, wicrect.Height);
int arrayBufferSize = WicUtility.GetArrayBufferSize(blob);
using (PinHelper pinHelper = new PinHelper(blob))
{
bitmap.CopyPixels(ref wicrect, arrayStride, arrayBufferSize, pinHelper.Addr);
}
}
