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(YGA): support compressed images.

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This commit is contained in:
morkt
2018-06-14 23:25:22 +04:00
parent a698488371
commit 68b46990ef
1 changed files with 11 additions and 5 deletions
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16
Legacy/Yaneurao/ImageYGA.cs
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@@ -33,6 +33,7 @@ namespace GameRes.Formats.Yaneurao
internal class YgaMetaData : ImageMetaData internal class YgaMetaData : ImageMetaData
{ {
public int UnpackedSize; public int UnpackedSize;
public bool IsCompressed;
} }
[Export(typeof(ImageFormat))] [Export(typeof(ImageFormat))]
@@ -45,13 +46,15 @@ namespace GameRes.Formats.Yaneurao
public override ImageMetaData ReadMetaData (IBinaryStream file) public override ImageMetaData ReadMetaData (IBinaryStream file)
{ {
var header = file.ReadHeader (0x18); var header = file.ReadHeader (0x18);
if (header.ToInt32 (0xC) != 1) int compression = header.ToInt32 (0xC);
if (compression > 1)
return null; return null;
return new YgaMetaData { return new YgaMetaData {
Width = header.ToUInt32 (4), Width = header.ToUInt32 (4),
Height = header.ToUInt32 (8), Height = header.ToUInt32 (8),
BPP = 32, BPP = 32,
UnpackedSize = header.ToInt32 (0x10), UnpackedSize = header.ToInt32 (0x10),
IsCompressed = compression != 0,
}; };
} }
@@ -59,12 +62,15 @@ namespace GameRes.Formats.Yaneurao
{ {
var meta = (YgaMetaData)info; var meta = (YgaMetaData)info;
file.Position = 0x18; file.Position = 0x18;
using (var input = new LzssStream (file.AsStream, LzssMode.Decompress, true)) var pixels = new byte[meta.UnpackedSize];
if (meta.IsCompressed)
{ {
var pixels = new byte[meta.UnpackedSize]; using (var input = new LzssStream (file.AsStream, LzssMode.Decompress, true))
input.Read (pixels, 0, meta.UnpackedSize); input.Read (pixels, 0, meta.UnpackedSize);
return ImageData.Create (info, PixelFormats.Bgra32, null, pixels);
} }
else
file.Read (pixels, 0, meta.UnpackedSize);
return ImageData.Create (info, PixelFormats.Bgra32, null, pixels);
} }
public override void Write (Stream file, ImageData image) public override void Write (Stream file, ImageData image)