/// <summary>
/// Gets the number of bits per pixels for a WIC <see cref="WIC.PixelFormat"/> Guid.
/// </summary>
/// <param name="targetGuid">A WIC <see cref="WIC.PixelFormat"/> Guid.</param>
/// <returns>The number of bits per pixels for a WIC. If this method is failing to calculate the number of pixels, return 0.</returns>
private static int GetBitsPerPixel(Guid targetGuid)
{
using (var info = new WIC.ComponentInfo(Factory, targetGuid))
{
if (info.ComponentType != WIC.ComponentType.PixelFormat)
{
return(0);
}
var pixelFormatInfo = info.QueryInterfaceOrNull <WIC.PixelFormatInfo>();
if (pixelFormatInfo == null)
{
return(0);
}
int bpp = pixelFormatInfo.BitsPerPixel;
pixelFormatInfo.Dispose();
return(bpp);
}
}
/// <summary>
/// Function to retrieve the bits per pixel in the specified WIC image format.
/// </summary>
/// <param name="wicPixelFormat">Image format to look up.</param>
/// <returns>The bits per pixel of the format, or -1 if the format/bpp could not be determined.</returns>
public int GetBitsPerPixel(Guid wicPixelFormat)
{
using (var component = new WIC.ComponentInfo(Factory, wicPixelFormat))
{
if (component.ComponentType != WIC.ComponentType.PixelFormat)
{
return(-1);
}
using (var formatInfo = component.QueryInterfaceOrNull <WIC.PixelFormatInfo>())
{
if (formatInfo == null)
{
return(-1);
}
return(formatInfo.BitsPerPixel);
}
}
}
/// <summary>
/// Gets the number of bits per pixels for a WIC <see cref="WIC.PixelFormat"/> Guid.
/// </summary>
/// <param name="targetGuid">A WIC <see cref="WIC.PixelFormat"/> Guid.</param>
/// <returns>The number of bits per pixels for a WIC. If this method is failing to calculate the number of pixels, return 0.</returns>
private static int GetBitsPerPixel(Guid targetGuid)
{
using (var info = new ComponentInfo(Factory, targetGuid))
{
if (info.ComponentType != ComponentType.PixelFormat)
return 0;
var pixelFormatInfo = info.QueryInterfaceOrNull<PixelFormatInfo>();
if (pixelFormatInfo == null)
return 0;
int bpp = pixelFormatInfo.BitsPerPixel;
pixelFormatInfo.Dispose();
return bpp;
}
}
