private static void ReadBmpFile(CommandLineOptions opts, ParseContext context, IcoFrame frame, byte[] sourceFile)
{
using (var stream = new MemoryStream(sourceFile))
{
var decoder = new SixLabors.ImageSharp.Formats.Bmp.BmpDecoder();
frame.CookedData = decoder.Decode <Rgba32>(new Configuration(), stream);
}
frame.Encoding.Type = IcoEncodingType.Bitmap;
}
private static void WriteBmpFrame(CommandLineOptions opts, ParseContext context, IcoFrame frame)
{
var encoding = opts.BitmapEncodingOverride ?? BmpUtil.GetIdealBitmapEncoding(frame.CookedData, hasIcoMask: true);
if (opts.MaskImagePath != null)
{
var maskSource = File.ReadAllBytes(opts.MaskImagePath);
using (var stream = new MemoryStream(maskSource))
{
var decoder = new SixLabors.ImageSharp.Formats.Bmp.BmpDecoder();
var mask = decoder.Decode <Rgba32>(new Configuration(), stream);
if (mask.Width != frame.CookedData.Width || mask.Height != frame.CookedData.Height)
{
Reporter.ErrorLine(
IcoErrorCode.BitmapMaskWrongDimensions,
$"The mask's dimentions {mask.Height}x{mask.Width} don't match "
+ $"the frame dimensions {frame.CookedData.Height}x{frame.CookedData.Width}.",
opts.MaskImagePath);
throw new ArgumentException();
}
for (var x = 0; x < mask.Width; x++)
{
for (var y = 0; y < mask.Height; y++)
{
if (mask[x, y].PackedValue != 0xffffffff && mask[x, y].PackedValue != 0x000000ff)
{
Reporter.ErrorLine(
IcoErrorCode.BitampMaskWrongColors,
$"The mask must be comprised entirely of black and white pixels (where black means transparent).",
opts.MaskImagePath);
throw new ArgumentException();
}
}
}
frame.Mask = BmpUtil.CreateMaskFromImage(mask, blackIsTransparent: true);
}
}
else
{
frame.Mask = BmpUtil.CreateMaskFromImage(frame.CookedData, blackIsTransparent: false);
}
frame.RawData = BmpEncoder.EncodeBitmap(context, encoding, BmpEncoder.Dialect.Ico, frame);
if (frame.RawData == null)
{
Reporter.ErrorLine(context.LastEncodeError, $"Cannot encode the source image as a bitmap of type: {encoding}. Try reducing the number of colors, or changing the bitmap encoding.", opts.SourceImagePath);
throw new ArgumentException();
}
frame.Encoding.ClaimedBitDepth = (uint)BmpUtil.GetBitDepthForPixelFormat(encoding);
frame.Encoding.ActualBitDepth = frame.Encoding.ClaimedBitDepth;
}
public virtual async Task <(int Height, int Width)> GetImageDimensions(IFormFile file)
{
// Based on https://stackoverflow.com/questions/50377114/how-to-get-the-image-width-height-when-doing-upload-in-asp-net-core
if (file != null)
{
List <string> AcceptableImageExtentions = new List <string> {
".jpg", ".jpeg", ".png", ".bmp"
};
string fileExtention = System.IO.Path.GetExtension(file.FileName);
if (AcceptableImageExtentions.Contains(fileExtention))
{
using (System.IO.Stream stream = new System.IO.MemoryStream())
{
await file.CopyToAsync(stream);
SixLabors.ImageSharp.Formats.IImageDecoder imageDecoder;
if (fileExtention == ".jpeg" || fileExtention == ".jpg")
{
imageDecoder = new SixLabors.ImageSharp.Formats.Jpeg.JpegDecoder();
}
else if (fileExtention == ".png")
{
imageDecoder = new SixLabors.ImageSharp.Formats.Png.PngDecoder();
}
else
{
imageDecoder = new SixLabors.ImageSharp.Formats.Bmp.BmpDecoder();
}
if (stream.Position == stream.Length) //Check this because if your image is a .png, it might just throw an error
{
stream.Position = stream.Seek(0, SeekOrigin.Begin);
}
SixLabors.ImageSharp.Image <SixLabors.ImageSharp.PixelFormats.Rgba32> imageSharp = imageDecoder.Decode <SixLabors.ImageSharp.PixelFormats.Rgba32>(SixLabors.ImageSharp.Configuration.Default, stream);
if (imageSharp != null)
{
return(imageSharp.Height, imageSharp.Width);
}
}
}
}
return(0, 0);
}
