/// <summary>
/// Converts pixel format to standard System.Drawing PixelFormat enumeration
/// </summary>
/// <param name="pixelFormat"></param>
/// <returns></returns>
/// <exception cref="ArgumentOutOfRangeException"></exception>
public static PixelFormat ToPixelFormat(this KrecImagePixelFormat pixelFormat)
{
switch (pixelFormat)
{
case KrecImagePixelFormat.Format1BitPerPixel:
return(PixelFormat.Format1bppIndexed);
case KrecImagePixelFormat.Format8BitPerPixel:
return(PixelFormat.Format8bppIndexed);
case KrecImagePixelFormat.Format24bppRgb:
return(PixelFormat.Format24bppRgb);
case KrecImagePixelFormat.Format32bppArgb:
return(PixelFormat.Format32bppArgb);
case KrecImagePixelFormat.Format32bppRgb:
return(PixelFormat.Format32bppRgb);
case KrecImagePixelFormat.Format32bppPArgb:
return(PixelFormat.Format32bppArgb);
default:
throw new ArgumentOutOfRangeException(nameof(pixelFormat), pixelFormat, null);
}
}
public KrecImage(int width,
int height,
int bytesPerLine,
float horizontalResolution,
float verticalResolution,
KrecImagePixelFormat pixelFormat,
[NotNull] byte[] imageData)
{
this.width = width;
this.height = height;
this.bytesPerLine = bytesPerLine;
this.horizontalResolution = horizontalResolution;
this.verticalResolution = verticalResolution;
format = pixelFormat;
this.imageData = imageData;
var bytesPerPixel = pixelFormat.BytesPerPixel();
if (bytesPerLine < bytesPerPixel * width)
{
throw new ArgumentException(
string.Format("Number of bytes per line ({0}) is less than needed for the specified image width ({1}) and pixel format ({2})",
bytesPerLine, width, pixelFormat));
}
if (imageData.Length < (height * bytesPerLine))
{
throw new ArgumentException(
string.Format("Pixel data array for image is too small (size = {0}) for given bytes per line ({1}) and height ({2})",
imageData.Length, bytesPerLine, height));
}
}
/// <summary>
/// Returns number of bytes needed to store one pixel in the specified format
/// </summary>
/// <param name="pixelFormat"></param>
/// <returns></returns>
/// <exception cref="ArgumentOutOfRangeException"></exception>
public static int BytesPerPixel(this KrecImagePixelFormat pixelFormat)
{
switch (pixelFormat)
{
case KrecImagePixelFormat.Format1BitPerPixel:
case KrecImagePixelFormat.Format8BitPerPixel: // intentionally pass through
return(1);
case KrecImagePixelFormat.Format24bppRgb:
return(3);
case KrecImagePixelFormat.Format32bppArgb:
case KrecImagePixelFormat.Format32bppRgb: // intentionally pass through
case KrecImagePixelFormat.Format32bppPArgb: // intentionally pass through
return(4);
default:
throw new ArgumentOutOfRangeException(nameof(pixelFormat), pixelFormat, null);
}
}
public KrecImage(KrecImage source, byte[] newImageData, KrecImagePixelFormat newKrecImagePixelFormat)
: this(source.Width, source.Height, source.BytesPerLine, source.HorizontalResolution,
source.VerticalResolution, newKrecImagePixelFormat, newImageData)
{
}
public static int CalculateStride(int width, KrecImagePixelFormat format)
{
return(CalculateStride(width, format.ToPixelFormat()));
}
