implemented LIM image format.

This commit is contained in:
morkt 2015-07-14 21:23:03 +04:00
parent e42d82712c
commit bdf06d3e9f

View File

@ -30,8 +30,9 @@ using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Collections.Generic;
using System.Text;
using GameRes.Utility;
namespace GameRes.Formats
namespace GameRes.Formats.Liar
{
[Export(typeof(ImageFormat))]
public class WcgFormat : ImageFormat
@ -40,6 +41,11 @@ namespace GameRes.Formats
public override string Description { get { return "Liar-soft proprietary image format"; } }
public override uint Signature { get { return 0x02714757; } }
public WcgFormat ()
{
Signatures = new uint[] { 0x02714757, 0xF2714757 };
}
public override ImageMetaData ReadMetaData (Stream stream)
{
if (0x57 != stream.ReadByte() || 0x47 != stream.ReadByte())
@ -60,15 +66,10 @@ namespace GameRes.Formats
public override ImageData Read (Stream file, ImageMetaData info)
{
uint pixel_size = info.Width * info.Height;
using (var reader = new Reader (file, pixel_size))
using (var reader = new Reader (file, info.Width * info.Height))
{
reader.Unpack();
byte[] pixels = reader.Data;
var bitmap = BitmapSource.Create ((int)info.Width, (int)info.Height, 96, 96,
PixelFormats.Bgra32, null, pixels, (int)info.Width*4);
bitmap.Freeze();
return new ImageData (bitmap, info);
return ImageData.Create (info, PixelFormats.Bgra32, null, reader.Data);
}
}
@ -100,7 +101,7 @@ namespace GameRes.Formats
}
}
private class Reader : IDisposable
internal class Reader : IDisposable
{
private byte[] m_data;
private BinaryReader m_input;
@ -115,7 +116,7 @@ namespace GameRes.Formats
private uint edi;
private uint m_index_length_limit;
private int m_bits;
private uint m_bits;
public byte[] Data { get { return m_data; } }
@ -218,28 +219,26 @@ namespace GameRes.Formats
m_data[edi+1] = (byte)(word >> 8);
}
bool GetNextBit ()
uint GetNextBit ()
{
bool carry = 0 != (m_bits & 0x80);
m_bits <<= 1;
if (0 == (m_bits & 0xff))
{
if (0 == m_src_size--)
throw new InvalidFormatException ("Unexpected end of file");
m_bits = (int)m_input.ReadByte();
m_bits = (m_bits << 1) + 1;
carry = 0 != (m_bits & 0x100);
m_bits = (uint)m_input.ReadByte() << 1;
m_bits |= 1;
}
return carry;
return (m_bits >> 8) & 1;
}
uint GetIndex (uint count)
{
if (0 == --count)
return GetNextBit() ? 1u : 0u;
return GetNextBit();
if (count < m_index_length_limit)
return GetBits (count, 1);
while (GetNextBit())
while (0 != GetNextBit())
{
if (count >= 0x10)
throw new InvalidFormatException ("Invalid index count");
@ -252,8 +251,7 @@ namespace GameRes.Formats
{
do
{
bool carry = GetNextBit();
word = (word << 1) + (carry ? 1u : 0u);
word = (word << 1) | GetNextBit();
}
while (0 != --count);
return word;
@ -492,4 +490,201 @@ namespace GameRes.Formats
#endregion
}
}
[Export(typeof(ImageFormat))]
public class LimFormat : ImageFormat
{
public override string Tag { get { return "LIM"; } }
public override string Description { get { return "Liar-soft image format"; } }
public override uint Signature { get { return 0; } }
public override ImageMetaData ReadMetaData (Stream stream)
{
if (0x4C != stream.ReadByte() || 0x4D != stream.ReadByte())
return null;
int flag = stream.ReadByte() & 0xF;
if (flag != 2 && flag != 3)
return null;
stream.Seek (5, SeekOrigin.Current);
using (var file = new ArcView.Reader (stream))
{
var meta = new ImageMetaData { BPP = 32 };
meta.Width = file.ReadUInt32();
meta.Height = file.ReadUInt32();
return meta;
}
}
public override ImageData Read (Stream file, ImageMetaData info)
{
file.Position = 0x10;
using (var reader = new Reader (file, info))
{
reader.Unpack();
return ImageData.Create (info, reader.Format, null, reader.Data);
}
}
public override void Write (Stream file, ImageData image)
{
throw new NotImplementedException ("LimFormat.Write not implemented");
}
internal class Reader : IDisposable
{
BinaryReader m_input;
byte[] m_output;
byte[] m_index;
byte[] m_image;
int m_width;
int m_height;
public byte[] Data { get { return m_image; } }
public PixelFormat Format { get { return PixelFormats.Bgra32; } }
public Reader (Stream file, ImageMetaData info)
{
m_input = new ArcView.Reader (file);
m_width = (int)info.Width;
m_height = (int)info.Height;
m_image = new byte[m_width*m_height*4];
}
int m_remaining;
int m_current;
int m_bits;
public void Unpack ()
{
byte mask = 0xFF;
for (int i = 3; i >= 0; --i)
{
int channel_size = m_input.ReadInt32();
if (null == m_output)
m_output = new byte[channel_size];
else if (channel_size != m_output.Length)
throw new InvalidFormatException();
m_remaining = m_input.ReadInt32();
int index_size = m_input.ReadUInt16();
if (null == m_index || index_size > m_index.Length)
m_index = new byte[index_size];
m_input.ReadInt16(); // ignored
if (m_index.Length != m_input.Read (m_index, 0, m_index.Length))
throw new InvalidFormatException ("Unexpected end of file");
UnpackChannel();
int src = 0;
for (int p = i; p < m_image.Length; p += 4)
{
m_image[p] = (byte)(m_output[src++] ^ mask);
}
mask = 0;
}
}
void UnpackChannel ()
{
m_current = 0;
int dst = 0;
while (dst < m_output.Length)
{
int bits = GetBits (3);
if (-1 == bits)
break;
if (0 != bits)
{
int index = GetIndex (bits);
if (index < 0)
break;
if (dst + 1 >= m_output.Length)
break;
m_output[dst++] = m_index[index];
}
else
{
int count = GetBits (4);
if (-1 == count)
break;
bits = GetBits (3);
if (-1 == bits)
break;
int index = GetIndex (bits);
if (-1 == index)
break;
count += 2;
for (int i = 0; i < count; i++)
{
if (dst + 1 >= m_output.Length)
return;
m_output[dst++] = m_index[index];
}
}
}
}
private int GetBits (int n)
{
int v = 0;
while (n > 0)
{
if (0 == m_current)
{
m_bits = m_input.ReadByte();
m_current = 8;
}
v <<= 1;
m_bits <<= 1;
v |= (m_bits >> 8) & 1;
--m_current;
--n;
}
return v;
}
private int GetIndex (int bits)
{
if (bits < 7)
{
if (0 == bits)
return -1;
if (1 == bits--)
return GetBits (1);
return (1 << bits) | GetBits (bits);
}
for (int i = 6; i < 12; ++i)
{
bits = GetBits (1);
if (-1 == bits)
return -1;
if (0 == bits)
return (1 << i) | GetBits (i);
}
return -1;
}
#region IDisposable Members
bool disposed = false;
public void Dispose ()
{
Dispose (true);
GC.SuppressFinalize (this);
}
protected virtual void Dispose (bool disposing)
{
if (!disposed)
{
if (disposing)
m_input.Dispose();
}
}
#endregion
}
}
}