public Dune2ShpReader(Stream stream)
{
BinaryReader reader = new BinaryReader(stream);
ImageCount = reader.ReadUInt16();
//Last offset is pointer to end of file.
uint[] offsets = new uint[ImageCount + 1];
uint temp = reader.ReadUInt32();
//If fourth byte in file is non-zero, the offsets are two bytes each.
bool twoByteOffsets = (temp & 0xFF0000) > 0;
if (twoByteOffsets)
{
offsets[0] = ((temp & 0xFFFF0000) >> 16) + 2; //Offset does not account for image count bytes
offsets[1] = (temp & 0xFFFF) + 2;
}
else
{
offsets[0] = temp + 2;
}
for (int i = twoByteOffsets ? 2 : 1; i < ImageCount + 1; i++)
{
offsets[i] = (twoByteOffsets ? reader.ReadUInt16() : reader.ReadUInt32()) + 2;
}
for (int i = 0; i < ImageCount; i++)
{
reader.BaseStream.Seek(offsets[i], SeekOrigin.Begin);
Dune2ImageHeader header = new Dune2ImageHeader(reader);
byte[] imgData = reader.ReadBytes(header.FileSize);
header.Image = new byte[header.Height * header.Width];
//Decode image data
if (header.Flags != Dune2ImageFlags.F2)
{
byte[] tempData = new byte[header.DataSize];
Format80.DecodeInto(imgData, tempData);
Format2.DecodeInto(tempData, header.Image);
}
else
{
Format2.DecodeInto(imgData, header.Image);
}
//Lookup values in lookup table
if (header.LookupTable != null)
{
for (int j = 0; j < header.Image.Length; j++)
{
header.Image[j] = header.LookupTable[header.Image[j]];
}
}
headers.Add(header);
}
}
public Frame(Stream s)
{
var flags = (FormatFlags)s.ReadUInt16();
s.Position += 1;
var width = s.ReadUInt16();
var height = s.ReadUInt8();
Size = new Size(width, height);
// Subtract header size
var dataLeft = s.ReadUInt16() - 10;
var dataSize = s.ReadUInt16();
byte[] table;
if ((flags & FormatFlags.PaletteTable) != 0)
{
var n = (flags & FormatFlags.VariableLengthTable) != 0 ? s.ReadUInt8() : (byte)16;
table = new byte[n];
for (var i = 0; i < n; i++)
{
table[i] = s.ReadUInt8();
}
dataLeft -= n;
}
else
{
table = new byte[256];
for (var i = 0; i < 256; i++)
{
table[i] = (byte)i;
}
table[1] = 0x7f;
table[2] = 0x7e;
table[3] = 0x7d;
table[4] = 0x7c;
}
Data = new byte[width * height];
// Decode image data
var compressed = s.ReadBytes(dataLeft);
if ((flags & FormatFlags.SkipFormat80) == 0)
{
var temp = new byte[dataSize];
Format80.DecodeInto(compressed, temp);
compressed = temp;
}
Format2.DecodeInto(compressed, Data, 0);
// Lookup values in lookup table
for (var j = 0; j < Data.Length; j++)
{
Data[j] = table[Data[j]];
}
}
public ShpTSReader(Stream stream)
{
stream.ReadUInt16();
var width = stream.ReadUInt16();
var height = stream.ReadUInt16();
var size = new Size(width, height);
var frameCount = stream.ReadUInt16();
var frames = new FrameHeader[frameCount];
Frames = frames.AsReadOnly();
for (var i = 0; i < frames.Length; i++)
{
frames[i] = new FrameHeader(stream, size);
}
for (var i = 0; i < frameCount; i++)
{
var f = frames[i];
if (f.FileOffset == 0)
{
continue;
}
stream.Position = f.FileOffset;
var frameSize = f.Size.Width * f.Size.Height;
// Uncompressed
if (f.Format == 1 || f.Format == 0)
{
f.Data = stream.ReadBytes(frameSize);
}
// Uncompressed scanlines
else if (f.Format == 2)
{
f.Data = new byte[frameSize];
for (var j = 0; j < f.Size.Height; j++)
{
var length = stream.ReadUInt16() - 2;
var offset = f.Size.Width * j;
stream.ReadBytes(f.Data, offset, length);
}
}
// RLE-zero compressed scanlines
else if (f.Format == 3)
{
f.Data = new byte[frameSize];
for (var j = 0; j < f.Size.Height; j++)
{
var length = stream.ReadUInt16() - 2;
var offset = f.Size.Width * j;
Format2.DecodeInto(stream.ReadBytes(length), f.Data, offset);
}
}
}
}
public ShpTSReader(Stream stream)
{
stream.ReadUInt16();
var width = stream.ReadUInt16();
var height = stream.ReadUInt16();
var size = new Size(width, height);
var frameCount = stream.ReadUInt16();
for (var i = 0; i < frameCount; i++)
{
frames.Add(new FrameHeader(stream, size));
}
for (var i = 0; i < frameCount; i++)
{
var f = frames[i];
if (f.FileOffset == 0)
{
continue;
}
stream.Position = f.FileOffset;
// Uncompressed
if (f.Format == 1 || f.Format == 0)
{
f.Data = stream.ReadBytes(f.Size.Width * f.Size.Height);
}
// Uncompressed scanlines
else if (f.Format == 2)
{
f.Data = new byte[f.Size.Width * f.Size.Height];
for (var j = 0; j < f.Size.Height; j++)
{
var length = stream.ReadUInt16() - 2;
stream.Read(f.Data, f.Size.Width * j, length);
}
}
// RLE-zero compressed scanlines
else if (f.Format == 3)
{
f.Data = new byte[f.Size.Width * f.Size.Height];
for (var j = 0; j < f.Size.Height; j++)
{
var length = stream.ReadUInt16() - 2;
Format2.DecodeInto(stream.ReadBytes(length), f.Data, j * f.Size.Width);
}
}
}
spriteFrames = Exts.Lazy(() => frames.Cast <ISpriteFrame>());
}
