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feat: Support TLG mux qoi #174

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c4d3c71
feat: Support TLG mux qoi
crskycode Mar 13, 2026
cd54833
feat: Support TLGqoi file
crskycode Mar 13, 2026
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174 changes: 171 additions & 3 deletions ArcFormats/KiriKiri/ImageTLG.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -22,7 +22,7 @@ namespace GameRes.Formats.KiriKiri
internal class TlgMetaData : ImageMetaData
{
public int Version;
public int DataOffset;
public long DataOffset;
}

[Export(typeof(ImageFormat))]
Expand All @@ -35,7 +35,7 @@ public class TlgFormat : ImageFormat
public TlgFormat ()
{
Extensions = new string[] { "tlg", "tlg5", "tlg6" };
Signatures = new uint[] { 0x30474C54, 0x35474C54, 0x36474C54, 0x35474CAB, 0x584D4B4A };
Signatures = new uint[] { 0x30474C54, 0x35474C54, 0x36474C54, 0x35474CAB, 0x584D4B4A, 0x6D474C54, 0x71474C54 };
}

public override ImageMetaData ReadMetaData (IBinaryStream stream)
Expand All @@ -45,14 +45,18 @@ public override ImageMetaData ReadMetaData (IBinaryStream stream)
if (!header.AsciiEqual ("TLG0.0\x00sds\x1a"))
offset = 0;
int version;
if (!header.AsciiEqual (offset+6, "\x00raw\x1a"))
if (!header.AsciiEqual (offset+6, "\x00raw\x1a") && !header.AsciiEqual (offset+6, "\x00idx\x1a"))
return null;
if (0xAB == header[offset])
header[offset] = (byte)'T';
if (header.AsciiEqual (offset, "TLG6.0"))
version = 6;
else if (header.AsciiEqual (offset, "TLG5.0"))
version = 5;
else if (header.AsciiEqual (offset, "TLGmux"))
version = 0;
else if (header.AsciiEqual (offset, "TLGqoi"))
version = 1;
else if (header.AsciiEqual (offset, "XXXYYY"))
{
version = 5;
Expand Down Expand Up @@ -137,6 +141,10 @@ byte[] ReadTlg (IBinaryStream src, TlgMetaData info)
src.Position = info.DataOffset;
if (6 == info.Version)
return ReadV6 (src, info);
else if (0 == info.Version)
return ReadMUX (src, info);
else if (1 == info.Version)
return ReadQOI (src, info);
else
return ReadV5 (src, info);
}
Expand Down Expand Up @@ -1085,6 +1093,166 @@ decode values packed in "bit_pool".
}
}
}

static class QoiCodec
{
public const int Index = 0x00;
public const int Diff = 0x40;
public const int Luma = 0x80;
public const int Run = 0xC0;
public const int Rgb = 0xFE;
public const int Rgba = 0xFF;
public const int Mask2 = 0xC0;
public const int HashTableSize = 64;
}

byte[] DecodeQOI (IBinaryStream src, uint width, uint height)
{
var output = new byte[4*width*height];
var table = new byte[4*QoiCodec.HashTableSize];
byte r = 0, g = 0, b = 0, a = 255;
var run = 0;
for (var dst = 0; dst < output.Length; dst += 4)
{
if (run > 0)
run--;
else
{
var b1 = src.ReadByte ();
if (-1 == b1)
throw new EndOfStreamException ();
if (QoiCodec.Rgb == b1)
{
var rgb = src.ReadInt24 ();
r = (byte)rgb;
g = (byte)(rgb >> 8);
b = (byte)(rgb >> 16);
}
else if (QoiCodec.Rgba == b1)
{
var rgba = src.ReadInt32 ();
r = (byte)rgba;
g = (byte)(rgba >> 8);
b = (byte)(rgba >> 16);
a = (byte)(rgba >> 24);
}
else if (QoiCodec.Index == (b1 & QoiCodec.Mask2))
{
var p1 = (b1 & ~QoiCodec.Mask2) * 4;
r = table[p1 ];
g = table[p1+1];
b = table[p1+2];
a = table[p1+3];
}
else if (QoiCodec.Diff == (b1 & QoiCodec.Mask2))
{
r += (byte)(((b1 >> 4) & 0x03) - 2);
g += (byte)(((b1 >> 2) & 0x03) - 2);
b += (byte)((b1 & 0x03) - 2);
}
else if (QoiCodec.Luma == (b1 & QoiCodec.Mask2))
{
var b2 = src.ReadByte ();
if (-1 == b2)
throw new EndOfStreamException ();
var vg = (b1 & 0x3F) - 32;
r += (byte)(vg - 8 + ((b2 >> 4) & 0x0F));
g += (byte)vg;
b += (byte)(vg - 8 + (b2 & 0x0F));
}
else if (QoiCodec.Run == (b1 & QoiCodec.Mask2))
{
run = b1 & 0x3F;
}
var p2 = (r*3 + g*5 + b*7 + a*11) % QoiCodec.HashTableSize*4;
table[p2 ] = r;
table[p2+1] = g;
table[p2+2] = b;
table[p2+3] = a;
}
output[dst ] = b;
output[dst+1] = g;
output[dst+2] = r;
output[dst+3] = a;
}
return output;
}

byte[] ReadQOI (IBinaryStream src, TlgMetaData info)
{
while (true)
{
var entry_signature = src.ReadInt32 ();
var entry_size = src.ReadInt32 ();
if (0x52444851 == entry_signature) // 'QHDR'
{
throw new NotImplementedException ();
}
else if (0 == entry_signature && 0 == entry_size)
break;
else
throw new InvalidFormatException ();
}
return DecodeQOI (src, info.Width, info.Height);
}

byte[] ReadMUX (IBinaryStream src, TlgMetaData info)
{
src.Position = info.DataOffset;
var slices = new List<TlgMetaData> ();
while (true)
{
var entry_signature = src.ReadInt32 ();
var entry_size = src.ReadInt32 ();
if (0x58554D43 == entry_signature) // 'CMUX'
{
var entry = src.ReadBytes (entry_size);
var count = entry.ToInt32 (0);
if (0 == count)
throw new InvalidFormatException ();
var offset = 4;
for (var i = 0; i < count; i++)
{
slices.Add (new TlgMetaData
{
OffsetX = entry.ToInt32 (offset),
OffsetY = entry.ToInt32 (offset+4),
Width = entry.ToUInt32 (offset+8),
Height = entry.ToUInt32 (offset+12),
DataOffset = entry.ToInt64 (offset+16)
});
offset += 24;
}
}
else if (0 == entry_signature && 0 == entry_size)
break;
else
throw new InvalidFormatException ();
}
var data_offset = src.Position;
var image = new byte[4*info.Width*info.Height];
foreach (var slice_info in slices)
{
src.Position = data_offset + slice_info.DataOffset;
byte[] slice;
var header = src.ReadBytes (11);
if (header.AsciiEqual (0, "TLGqoi") && header.AsciiEqual (7, "raw"))
{
var channels = src.ReadByte ();
var width = src.ReadUInt32 ();
var height = src.ReadUInt32 ();
if (3 != channels && 4 != channels)
throw new InvalidFormatException ();
if (width != slice_info.Width || height != slice_info.Height)
throw new InvalidFormatException ();
slice = ReadQOI (src, slice_info);
}
else
throw new NotImplementedException ();
BlendImage (image, info, slice, slice_info, 0);
}
return image;
}
}

internal class TagsParser
Expand Down
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