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GARbro-mirror/ArcFormats/Cyberworks/ImageTINK.cs

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//! \file ImageTINK.cs
//! \date Fri Jun 17 18:49:04 2016
//! \brief Tinker Bell encrypted image file.
//
// Copyright (C) 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
// deal in the Software without restriction, including without limitation the
// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
// sell copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
// IN THE SOFTWARE.
//
using System;
using System.ComponentModel.Composition;
using System.IO;
using System.Windows.Media;
namespace GameRes.Formats.Cyberworks
{
public enum AImageHeader
{
Flags = 0,
Field1 = 1,
Field2 = 2,
Height = 3,
Width = 4,
UnpackedSize = 5,
AlphaSize = 6,
BitsSize = 7,
Ignored = Field1,
}
internal sealed class AImageReader : IImageDecoder
{
readonly ImageMetaData m_info = new ImageMetaData();
IBinaryStream m_input;
byte[] m_output;
AImageScheme m_scheme;
ImageData m_image;
int[] m_header;
public Stream Source { get { m_input.Position = 0; return m_input.AsStream; } }
public ImageFormat SourceFormat { get { return null; } }
public ImageMetaData Info { get { return m_info; } }
public byte[] Baseline { get; set; }
public ImageData Image
{
get
{
if (null == m_image)
{
Unpack();
int stride = (int)Info.Width * Info.BPP / 8;
if (m_scheme.Flipped)
m_image = ImageData.CreateFlipped (Info, GetPixelFormat(), null, Data, stride);
else
m_image = ImageData.Create (Info, GetPixelFormat(), null, Data, stride);
}
return m_image;
}
}
public byte[] Data { get { return m_output; } }
public AImageReader (IBinaryStream input, AImageScheme scheme)
{
m_input = input;
m_scheme = scheme;
}
internal int[] ReadHeader ()
{
if (m_header != null)
return m_header;
int header_length = Math.Max (8, m_scheme.HeaderOrder.Length);
m_header = new int[header_length];
for (int i = 0; i < m_scheme.HeaderOrder.Length; ++i)
{
int b = GetInt();
m_header[m_scheme.HeaderOrder[i]] = b;
}
Info.Width = (uint)m_header[4];
Info.Height = (uint)m_header[3];
return m_header;
}
public void Unpack ()
{
var header = ReadHeader();
if (0 == Info.Width || Info.Width >= 0x8000 || 0 == Info.Height || Info.Height >= 0x8000)
throw new InvalidFormatException();
int unpacked_size = header[5];
if (unpacked_size <= 0)
throw new InvalidFormatException();
int flags = header[0];
int bits_size = header[7];
int data_offset = bits_size * 2;
if (0 == flags)
CopyV0 (unpacked_size);
else if (2 == (flags & 6))
UnpackV2 (bits_size, data_offset);
else if (6 == (flags & 6))
{
if (0 == bits_size)
CopyV6 (unpacked_size, header[6]);
else
UnpackV6 (bits_size, data_offset, data_offset + header[6]);
}
else if (0 == bits_size)
CopyV0 (unpacked_size);
else
UnpackV1 (bits_size, unpacked_size);
}
void CopyV0 (int data_size)
{
int plane_size = (int)Info.Width * (int)Info.Height;
if (plane_size == data_size)
{
Info.BPP = 8;
m_output = m_input.ReadBytes (data_size);
}
else if (3 * plane_size == data_size)
{
Info.BPP = 24;
m_output = m_input.ReadBytes (data_size);
}
else if (4 * plane_size == data_size)
{
Info.BPP = 32;
m_output = m_input.ReadBytes (data_size);
}
else
{
Info.BPP = 24;
int dst_stride = (int)Info.Width * 3;
int src_stride = (dst_stride + 3) & ~3;
if (src_stride * (int)Info.Height != data_size)
throw new InvalidFormatException();
m_output = new byte[dst_stride * (int)Info.Height];
var gap = new byte[src_stride-dst_stride];
int dst = 0;
for (uint y = 0; y < Info.Height; ++y)
{
m_input.Read (m_output, dst, dst_stride);
m_input.Read (gap, 0, gap.Length);
dst += dst_stride;
}
}
}
void UnpackV1 (int alpha_size, int rgb_size)
{
var alpha_map = m_input.ReadBytes (alpha_size);
if (alpha_map.Length != alpha_size)
throw new InvalidFormatException();
int plane_size = (int)Info.Width * (int)Info.Height;
if (Baseline != null)
{
Info.BPP = 24;
m_output = Baseline;
}
else
{
Info.BPP = 32;
m_output = new byte[plane_size * 4];
}
int pixel_size = Info.BPP / 8;
int bit = 1;
int bit_src = 0;
int dst = 0;
for (int i = 0; i < plane_size; ++i)
{
byte alpha = 0;
if ((bit & alpha_map[bit_src]) != 0)
{
m_input.Read (m_output, dst, 3);
alpha = 0xFF;
}
if (4 == pixel_size)
m_output[dst+3] = alpha;
dst += pixel_size;
if (0x80 == bit)
{
++bit_src;
bit = 1;
}
else
bit <<= 1;
}
}
void UnpackV2 (int offset1, int rgb_offset)
{
Info.BPP = 24;
var rgb_map = m_input.ReadBytes (offset1);
var alpha_map = m_input.ReadBytes (rgb_offset-offset1);
int plane_size = (int)Info.Width * (int)Info.Height;
m_output = new byte[plane_size * 3];
int bit = 1;
int bit_src = 0;
int dst = 0;
for (int i = 0; i < plane_size; ++i)
{
if ((bit & alpha_map[bit_src]) == 0 && (bit & rgb_map[bit_src]) != 0)
{
m_input.Read (m_output, dst, 3);
}
dst += 3;
if (0x80 == bit)
{
++bit_src;
bit = 1;
}
else
bit <<= 1;
}
}
void CopyV6 (int alpha_size, int rgb_size)
{
Info.BPP = 32;
int plane_size = (int)Info.Width * (int)Info.Height;
m_output = new byte[plane_size * 4];
int stride = ((int)Info.Width * 3 + 3) & ~3;
var line = new byte[stride];
int dst = 3;
for (uint y = 0; y < Info.Height; ++y)
{
m_input.Read (line, 0, stride);
int src = 0;
for (uint x = 0; x < Info.Width; ++x)
{
m_output[dst] = line[src];
dst += 4;
src += 3;
}
}
dst = 0;
for (uint y = 0; y < Info.Height; ++y)
{
m_input.Read (line, 0, stride);
int src = 0;
for (uint x = 0; x < Info.Width; ++x)
{
m_output[dst ] = line[src++];
m_output[dst+1] = line[src++];
m_output[dst+2] = line[src++];
dst += 4;
}
}
}
void UnpackV6 (int offset1, int alpha_offset, int rgb_offset)
{
Info.BPP = 32;
var rgb_map = m_input.ReadBytes (offset1);
var alpha_map = m_input.ReadBytes (alpha_offset - offset1);
var alpha = m_input.ReadBytes (rgb_offset - alpha_offset);
int plane_size = (int)Info.Width * (int)Info.Height;
m_output = new byte[plane_size * 4];
int bit = 1;
int bit_src = 0;
int alpha_src = 0;
int dst = 0;
for (int i = 0; i < plane_size; ++i)
{
bool has_alpha = (bit & alpha_map[bit_src]) != 0;
if (has_alpha || (bit & rgb_map[bit_src]) != 0)
{
m_input.Read (m_output, dst, 3);
if (has_alpha && alpha_src < alpha.Length)
{
m_output[dst+3] = alpha[alpha_src];
alpha_src += 3;
}
else
m_output[dst+3] = 0xFF;
}
dst += 4;
if (0x80 == bit)
{
++bit_src;
bit = 1;
}
else
bit <<= 1;
}
}
int GetInt ()
{
byte a = m_input.ReadUInt8();
if (a == m_scheme.Value3)
a = 0;
int d = 0;
int c = 0;
for (;;)
{
byte a1 = m_input.ReadUInt8();
if (a1 == m_scheme.Value2)
break;
if (a1 != m_scheme.Value1)
{
c = (a1 == m_scheme.Value3) ? 0 : a1;
}
else
{
++d;
}
}
return a + (c + d * m_scheme.Value1) * m_scheme.Value1;
}
PixelFormat GetPixelFormat ()
{
switch (Info.BPP)
{
case 8: return PixelFormats.Gray8;
case 24: return PixelFormats.Bgr24;
case 32: return PixelFormats.Bgra32;
default: throw new InvalidFormatException();
}
}
#region IDisposable Members
bool _disposed = false;
public void Dispose ()
{
if (!_disposed)
{
m_input.Dispose();
_disposed = true;
}
}
#endregion
}
}
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