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implemented SPD8 images.

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This commit is contained in:
morkt 2016-09-26 10:00:56 +04:00
parent aeb9441eeb
commit 5cc52546e2
1 changed files with 46 additions and 5 deletions
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51
ArcFormats/TopCat/ImageSPD.cs
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@ -2,7 +2,7 @@
//! \date Thu Oct 08 16:25:55 2015
//! \brief TopCat compressed image.
//
// Copyright (C) 2015 by morkt
// Copyright (C) 2015-2016 by morkt
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to
@ -36,6 +36,7 @@ namespace GameRes.Formats.TopCat
{
public Compression Method;
public uint UnpackedSize;
public bool IsSpd8;
}
internal enum Compression
@ -56,6 +57,11 @@ namespace GameRes.Formats.TopCat
public override string Description { get { return "TopCat compressed image format"; } }
public override uint Signature { get { return 0x43445053; } } // 'SPDC'
public SpdFormat ()
{
Signatures = new uint[] { 0x43445053, 0x38445053 }; // 'SPD8'
}
public override ImageMetaData ReadMetaData (Stream stream)
{
var header = new byte[0x14];
@ -76,6 +82,7 @@ namespace GameRes.Formats.TopCat
BPP = (int)(dw[1] >> 16),
Method = (Compression)(dw[1] & 0xFFFF),
UnpackedSize = dw[4],
IsSpd8 = header[3] == '8',
};
}
}
@ -83,9 +90,7 @@ namespace GameRes.Formats.TopCat
public override ImageData Read (Stream stream, ImageMetaData info)
{
var meta = info as SpdMetaData;
if (null == meta)
throw new ArgumentException ("SpdFormat.Read should be supplied with SpdMetaData", "info");
var meta = (SpdMetaData)info;
if (Compression.Jpeg == meta.Method)
return ReadJpeg (stream, meta);
@ -116,7 +121,7 @@ namespace GameRes.Formats.TopCat
dw[i] += 0xA8961EF1;
}
}
using (var rest = new StreamRegion (file, file.Position, file.Length-file.Position, true))
using (var rest = new StreamRegion (file, file.Position, true))
using (var jpeg = new PrefixStream (header, rest))
{
var decoder = new JpegBitmapDecoder (jpeg,
@ -170,6 +175,8 @@ namespace GameRes.Formats.TopCat
var rgb = new byte[m_info.Height * m_info.Width * 4];
if (Compression.LzRle == m_info.Method || Compression.LzRle2 == m_info.Method)
UnpackRle (rgb);
else if (m_info.IsSpd8)
UnpackSpd8Alpha (rgb);
else
UnpackRleAlpha (rgb);
m_output = rgb;
@ -275,6 +282,40 @@ namespace GameRes.Formats.TopCat
}
}
void UnpackSpd8Alpha (byte[] rgb)
{
int rgb_src = LittleEndian.ToInt32 (m_output, 0);
int ctl_src = 8;
int dst = 0;
while (dst < rgb.Length)
{
int control = m_output[ctl_src++];
if (0 == control)
{
int count = m_output[ctl_src++] + 1;
dst += 4 * count;
}
else if (1 == control)
{
int count = m_output[ctl_src++] + 1;
for (int i = 0; i < count; ++i)
{
rgb[dst++] = m_output[rgb_src++];
rgb[dst++] = m_output[rgb_src++];
rgb[dst++] = m_output[rgb_src++];
rgb[dst++] = 0xFF;
}
}
else
{
rgb[dst++] = m_output[rgb_src++];
rgb[dst++] = m_output[rgb_src++];
rgb[dst++] = m_output[rgb_src++];
rgb[dst++] = (byte)~(control - 1);
}
}
}
void UnpackSpdc ()
{
int pixel_size = m_info.BPP / 8;