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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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14
Legacy/Yaneurao/ImageYGA.cs
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@ -33,6 +33,7 @@ namespace GameRes.Formats.Yaneurao
internal class YgaMetaData : ImageMetaData
{
public int UnpackedSize;
public bool IsCompressed;
}
[Export(typeof(ImageFormat))]
@ -45,13 +46,15 @@ namespace GameRes.Formats.Yaneurao
public override ImageMetaData ReadMetaData (IBinaryStream file)
{
var header = file.ReadHeader (0x18);
if (header.ToInt32 (0xC) != 1)
int compression = header.ToInt32 (0xC);
if (compression > 1)
return null;
return new YgaMetaData {
Width = header.ToUInt32 (4),
Height = header.ToUInt32 (8),
BPP = 32,
UnpackedSize = header.ToInt32 (0x10),
IsCompressed = compression != 0,
};
}
@ -59,12 +62,15 @@ namespace GameRes.Formats.Yaneurao
{
var meta = (YgaMetaData)info;
file.Position = 0x18;
using (var input = new LzssStream (file.AsStream, LzssMode.Decompress, true))
{
var pixels = new byte[meta.UnpackedSize];
if (meta.IsCompressed)
{
using (var input = new LzssStream (file.AsStream, LzssMode.Decompress, true))
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)