public static BitmapInfo GetBitmapInfo(STBREAD.ImageResult image)
{
if (TryGetPixelFormat(image.ColorComponents, image.BitsPerChannel, out var fmt))
{
return(new BitmapInfo(image.Width, image.Height, fmt));
}
throw new ArgumentException("Unsupported format", nameof(image));
}
public static ImageResult FromStream(Stream stream, ColorComponents?requiredComponents = null, bool use8BitsPerChannel = true)
{
ImageResult result = null;
if (JpgDecoder.Test(stream))
{
result = JpgDecoder.Decode(stream, requiredComponents);
}
else if (PngDecoder.Test(stream))
{
result = PngDecoder.Decode(stream, requiredComponents);
}
else if (BmpDecoder.Test(stream))
{
result = BmpDecoder.Decode(stream, requiredComponents);
}
else if (GifDecoder.Test(stream))
{
result = GifDecoder.Decode(stream, requiredComponents);
}
else if (PsdDecoder.Test(stream))
{
result = PsdDecoder.Decode(stream, requiredComponents);
}
else if (TgaDecoder.Test(stream))
{
result = TgaDecoder.Decode(stream, requiredComponents);
}
if (result == null)
{
Decoder.stbi__err("unknown image type");
}
if (use8BitsPerChannel && result.BitsPerChannel != 8)
{
result.Data = Conversion.stbi__convert_16_to_8(result.Data, result.Width, result.Height, (int)result.ColorComponents);
}
return(result);
}
internal static unsafe ImageResult FromResult(byte *result, int width, int height, ColorComponents comp,
ColorComponents req_comp)
{
if (result == null)
{
throw new InvalidOperationException(LastError);
}
var image = new ImageResult
{
Width = width,
Height = height,
SourceComp = comp,
Comp = req_comp == ColorComponents.Default ? comp : req_comp
};
// Convert to array
image.Data = new byte[width * height * (int)image.Comp];
Marshal.Copy(new IntPtr(result), image.Data, 0, image.Data.Length);
return(image);
}
public static MemoryBitmap AsMemoryBitmap(STBREAD.ImageResult image)
{
var binfo = GetBitmapInfo(image);
return(new MemoryBitmap(image.Data, binfo));
}
public static SpanBitmap AsSpanBitmap(STBREAD.ImageResult image)
{
var binfo = GetBitmapInfo(image);
return(new SpanBitmap(image.Data, binfo));
}