public override BitmapDataBase ConvertTo(PixelFormat dstFormat, Color[] palette)
{
if (dstFormat.IsIndexed)
{
int maxcolor = (int)Math.Pow(2, dstFormat.BitsPerPixel);
if (maxcolor >= palette.Length)
{
var data2color = PixelConverters.GetDataIndexedToColorConverter(PixelFormat);
if (data2color != null)
{
var indexes = ImageHelper.GetIndexes(data2color(data, palette, Width), palette, dstFormat, Width);
return(new BitmapDataIndexed(Width, Height, dstFormat,
ImageHelper.IndexesToData(indexes, dstFormat.BitsPerPixel, Width),
palette));
}
else
{
throw new Exception($"BitmapData: convert to {dstFormat} error. DataToColorConverter undefined.");
}
}
else
{
throw new Exception($"BitmapData: convert to {dstFormat} error. Palette lenght ({palette.Length}) is less than pixel format's maxcolor ({maxcolor}).");
}
}
else
{
throw new Exception($"BitmapData: convert to {dstFormat} error. Destination PixelFormat not indexed.");
}
}
public override Color[] GetPixels()
{
var data2color = PixelConverters.GetDataIndexedToColorConverter(PixelFormat);
if (data2color != null)
{
return(data2color(data, palette, Width));
}
else
{
throw new Exception("BitmapData: GetPixels error. DataIndexedToColorConverter undefined.");
}
}
public override BitmapDataBase ConvertTo(PixelFormat dstFormat)
{
if (dstFormat == PixelFormat)
{
return(Copy());
}
else if (dstFormat.Format == PixelFormatEnum.Undefined)
{
var dataInd2Color = PixelConverters.GetDataIndexedToColorConverter(PixelFormat);
if (dataInd2Color != null)
{
return(new BitmapDataUndefined(Width, Height, dataInd2Color(data, palette, Width)));
}
else
{
throw new Exception($"BitmapData: convert to {dstFormat} error. DataToColorConverter undefined.");
}
}
else if (dstFormat.IsIndexed)
{
if (PixelFormat.BitsPerPixel <= dstFormat.BitsPerPixel)
{
var data2data = PixelConverters.GetDataToDataConverter(PixelFormat, dstFormat);
if (data2data != null)
{
return(new BitmapDataIndexed(Width, Height, dstFormat, data2data(data), palette));
}
else
{
var dataInd2dataInd = PixelConverters.DataIndexedToDataIndexed(PixelFormat, dstFormat);
if (dataInd2dataInd != null)
{
return(new BitmapDataIndexed(Width, Height, dstFormat, dataInd2dataInd(data, Width), palette));
}
}
}
var data2colorindexed = PixelConverters.GetDataIndexedToColorConverter(PixelFormat);
if (data2colorindexed != null)
{
IQuantization quantization = new WuQuantizer();
if (quantization.StartQuantization(data2colorindexed(data, palette, Width), Convert.ToInt32(Math.Pow(2, dstFormat.BitsPerPixel))))
{
return(new BitmapDataIndexed(Width, Height, dstFormat, quantization.QuantData, quantization.QuantPalette));
}
else
{
throw new Exception($"BitmapData: convert to {dstFormat} error. Quantization don't work.");
}
}
else
{
throw new Exception($"BitmapDataIndexed: convert to {dstFormat} error. DataToColorConverter undefined.");
}
}
else
{
var dataInd2data = PixelConverters.GetDataIndexedToDataConverter(PixelFormat, dstFormat);
if (dataInd2data == null)
{
var color2data = PixelConverters.GetColorToDataConverter(dstFormat);
var data2color = PixelConverters.GetDataIndexedToColorConverter(PixelFormat);
if (data2color != null & color2data != null)
{
return(new BitmapData(Width, Height, dstFormat, color2data(data2color(data, palette, Width))));
}
else
{
throw new Exception($"BitmapData: convert to {dstFormat} error. ColorToDataConverter or DataToColorConverter undefined.");
}
}
else
{
return(new BitmapData(Width, Height, dstFormat, dataInd2data(data, palette)));
}
}
}