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(DwqFormat): implemented BMP+MASK format.

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read BMP images manually as they're not really BMPs suitable for
BmpBitmapDecoder.
This commit is contained in:
morkt 2015-08-05 21:22:02 +04:00
parent 3a96fd0efd
commit f0b327594b
1 changed files with 86 additions and 34 deletions
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120
ArcFormats/ImageDWQ.cs
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@ -78,7 +78,13 @@ namespace GameRes.Formats.BlackCyc
public DwqFormat ()
{
Signatures = new uint[] { 0x4745504A, 0x20504D42, 0x20474E50, 0x4B434150 };
Signatures = new uint[] {
0x4745504A, // JPEG
0x20504D42, // BMP
0x20474E50, // PNG
0x4B434150, // PACKBMP
0x2B504D42, // BMP+MASK
};
}
static ImageFormat GetFormat (string tag)
@ -94,6 +100,24 @@ namespace GameRes.Formats.BlackCyc
var header = ResourceHeader.Read (stream);
if (null == header)
return null;
int packed_size;
switch (header.PackType)
{
case 0: // BMP
case 5: // JPEG
case 8: // PNG
packed_size = (int)(stream.Length-0x40);
break;
case 2: // BMP+MASK
case 3: // PACKBMP+MASK
case 7: // JPEG+MASK
packed_size = LittleEndian.ToInt32 (header.Bytes, 0x20);
break;
default: // unknown format
return null;
}
return new DwqMetaData
{
Width = LittleEndian.ToUInt32 (header.Bytes, 0x24),
@ -113,43 +137,38 @@ namespace GameRes.Formats.BlackCyc
throw new ArgumentException ("DwqFormat.Read should be supplied with DwqMetaData", "info");
BitmapSource bitmap = null;
switch (meta.PackType)
using (var input = new StreamRegion (stream, 0x40, meta.PackedSize, true))
{
case 5: // JPEG
using (var jpeg = new StreamRegion (stream, 0x40, stream.Length-0x40, true))
return JpegFormat.Value.Read (jpeg, info);
case 8: // PNG
using (var png = new StreamRegion (stream, 0x40, stream.Length-0x40, true))
return PngFormat.Value.Read (png, info);
case 0: // BMP
using (var bmp = new StreamRegion (stream, 0x40, stream.Length-0x40, true))
switch (meta.PackType)
{
var decoder = new BmpBitmapDecoder (bmp, BitmapCreateOptions.None, BitmapCacheOption.OnLoad);
// non-conforming BMP, flip image vertically
bitmap = new TransformedBitmap (decoder.Frames[0], new ScaleTransform { ScaleY = -1 });
return new ImageData (bitmap, info);
}
case 5: // JPEG
return JpegFormat.Value.Read (input, info);
case 7: // JPEG+MASK
using (var jpeg = new StreamRegion (stream, 0x40, meta.PackedSize, true))
{
var decoder = new JpegBitmapDecoder (jpeg, BitmapCreateOptions.None, BitmapCacheOption.OnLoad);
bitmap = decoder.Frames[0];
}
break;
case 8: // PNG
return PngFormat.Value.Read (input, info);
case 3: // PACKBMP+MASK
using (var bmp = new StreamRegion (stream, 0x40, meta.PackedSize, true))
{
var reader = new DwqBmpReader (bmp, meta);
reader.Unpack();
bitmap = BitmapSource.Create ((int)info.Width, (int)info.Height,
ImageData.DefaultDpiX, ImageData.DefaultDpiY,
reader.Format, reader.Palette, reader.Data, reader.Stride);
case 0: // BMP
case 2: // BMP+MASK
bitmap = ReadFuckedUpBmpImage (input, info);
break;
case 7: // JPEG+MASK
{
var decoder = new JpegBitmapDecoder (input, BitmapCreateOptions.None, BitmapCacheOption.OnLoad);
bitmap = decoder.Frames[0];
break;
}
case 3: // PACKBMP+MASK
{
var reader = new DwqBmpReader (input, meta);
reader.Unpack();
bitmap = BitmapSource.Create ((int)info.Width, (int)info.Height,
ImageData.DefaultDpiX, ImageData.DefaultDpiY,
reader.Format, reader.Palette, reader.Data, reader.Stride);
break;
}
}
break;
}
if (null == bitmap)
throw new NotImplementedException();
@ -170,7 +189,7 @@ namespace GameRes.Formats.BlackCyc
int A = (color.R + color.G + color.B) / 3;
alpha[i] = (byte)A;
}
bitmap = ApplyAlphaChannel (bitmap, reader.Data);
bitmap = ApplyAlphaChannel (bitmap, alpha);
}
}
}
@ -200,6 +219,39 @@ namespace GameRes.Formats.BlackCyc
ImageData.DefaultDpiX, ImageData.DefaultDpiY,
PixelFormats.Bgra32, null, pixels, stride);
}
private BitmapSource ReadFuckedUpBmpImage (Stream file, ImageMetaData info)
{
var header = new byte[0x36];
if (header.Length != file.Read (header, 0, header.Length))
throw new InvalidFormatException();
int bpp = LittleEndian.ToUInt16 (header, 0x1c);
if (bpp != 24 && bpp != 32)
{
file.Position = 0;
var decoder = new BmpBitmapDecoder (file, BitmapCreateOptions.None, BitmapCacheOption.OnLoad);
// non-conforming BMP, flip image vertically
return new TransformedBitmap (decoder.Frames[0], new ScaleTransform { ScaleY = -1 });
}
int pixel_size = bpp / 8;
int stride = ((int)info.Width * pixel_size + 3) & ~3;
var pixels = new byte[stride * info.Height];
if (pixels.Length != file.Read (pixels, 0, pixels.Length))
throw new EndOfStreamException();
for (int row = 0; row < pixels.Length; row += stride)
{
for (int i = 2; i < stride; i += pixel_size)
{
var t = pixels[row+i];
pixels[row+i] = pixels[row+i-2];
pixels[row+i-2] = t;
}
}
PixelFormat format = 32 == bpp ? PixelFormats.Bgr32 : PixelFormats.Bgr24;
return BitmapSource.Create ((int)info.Width, (int)info.Height,
ImageData.DefaultDpiX, ImageData.DefaultDpiY,
format, null, pixels, stride);
}
}
internal class DwqBmpReader