} // 'S25'
// in current implementation, only the first frame is returned.
// per-frame access is provided by S25Opener class.
public override ImageMetaData ReadMetaData(IBinaryStream file)
{
file.Position = 4;
int count = file.ReadInt32();
if (count < 0 || count > 0xfffff)
{
return(null);
}
uint first_offset = 0;
for (int i = 0; i < count && 0 == first_offset; ++i)
{
first_offset = file.ReadUInt32();
}
if (0 == first_offset)
{
return(null);
}
file.Position = first_offset;
var info = new S25MetaData();
info.Width = file.ReadUInt32();
info.Height = file.ReadUInt32();
info.OffsetX = file.ReadInt32();
info.OffsetY = file.ReadInt32();
info.FirstOffset = first_offset + 0x14;
info.Incremental = 0 != (file.ReadUInt32() & 0x80000000u);
info.BPP = 32;
return(info);
}
} // 'S25'
// in current implementation, only the first frame is returned.
// per-frame access is provided by S25Opener class.
public override ImageMetaData ReadMetaData(Stream stream)
{
using (var input = new ArcView.Reader(stream))
{
input.ReadUInt32();
int count = input.ReadInt32();
if (count < 0 || count > 0xfffff)
{
return(null);
}
uint first_offset = input.ReadUInt32();
if (0 == first_offset)
{
return(null);
}
input.BaseStream.Position = first_offset;
var info = new S25MetaData();
info.Width = input.ReadUInt32();
info.Height = input.ReadUInt32();
info.OffsetX = input.ReadInt32();
info.OffsetY = input.ReadInt32();
info.FirstOffset = first_offset + 0x14;
info.Incremental = 0 != (input.ReadUInt32() & 0x80000000u);
info.BPP = 32;
return(info);
}
}
public Reader(Stream file, S25MetaData info)
{
m_width = (int)info.Width;
m_height = (int)info.Height;
m_output = new byte[m_width * m_height * 4];
m_input = new ArcView.Reader(file);
m_origin = info.FirstOffset;
m_incremental = info.Incremental;
}
public Reader(IBinaryStream file, S25MetaData info, bool leave_open = false)
{
m_width = (int)info.Width;
m_height = (int)info.Height;
m_output = new byte[m_width * m_height * 4];
m_input = file;
m_origin = info.FirstOffset;
m_incremental = info.Incremental;
m_info = info;
m_should_dispose = !leave_open;
}
public override IImageDecoder OpenImage(ArcFile arc, Entry entry)
{
var offset = entry.Offset;
var info = new S25MetaData
{
Width = arc.File.View.ReadUInt32(offset),
Height = arc.File.View.ReadUInt32(offset + 4),
OffsetX = arc.File.View.ReadInt32(offset + 8),
OffsetY = arc.File.View.ReadInt32(offset + 12),
BPP = 32,
FirstOffset = (uint)(offset + 0x14),
Incremental = 0 != (arc.File.View.ReadUInt32(offset + 0x10) & 0x80000000u),
};
var input = arc.File.CreateStream(0, (uint)arc.File.MaxOffset);
return(new S25Format.Reader(input, info));
}
public override Stream OpenEntry(ArcFile arc, Entry entry)
{
// emulate TGA image
var offset = entry.Offset;
var info = new S25MetaData
{
Width = arc.File.View.ReadUInt32(offset),
Height = arc.File.View.ReadUInt32(offset + 4),
OffsetX = arc.File.View.ReadInt32(offset + 8),
OffsetY = arc.File.View.ReadInt32(offset + 12),
BPP = 32,
FirstOffset = (uint)(offset + 0x14),
Incremental = 0 != (arc.File.View.ReadUInt32(offset + 0x10) & 0x80000000u),
};
using (var input = arc.File.CreateStream(0, (uint)arc.File.MaxOffset))
using (var reader = new S25Format.Reader(input, info))
{
return(TgaStream.Create(info, reader.Unpack()));
}
}
// in current implementation, only the first frame is returned.
// per-frame access is provided by S25Opener class.
public override ImageMetaData ReadMetaData(Stream stream)
{
using (var input = new ArcView.Reader (stream))
{
input.ReadUInt32();
int count = input.ReadInt32();
if (count < 0 || count > 0xfffff)
return null;
uint first_offset = input.ReadUInt32();
if (0 == first_offset)
return null;
input.BaseStream.Position = first_offset;
var info = new S25MetaData();
info.Width = input.ReadUInt32();
info.Height = input.ReadUInt32();
info.OffsetX = input.ReadInt32();
info.OffsetY = input.ReadInt32();
info.FirstOffset = first_offset+0x14;
info.Incremental = 0 != (input.ReadUInt32() & 0x80000000u);
info.BPP = 32;
return info;
}
}
public Reader(Stream file, S25MetaData info)
{
m_width = (int)info.Width;
m_height = (int)info.Height;
m_output = new byte[m_width * m_height * 4];
m_input = new ArcView.Reader (file);
m_origin = info.FirstOffset;
m_incremental = info.Incremental;
}
public override Stream OpenEntry(ArcFile arc, Entry entry)
{
// emulate TGA image
var offset = entry.Offset;
var info = new S25MetaData
{
Width = arc.File.View.ReadUInt32 (offset),
Height = arc.File.View.ReadUInt32 (offset+4),
OffsetX = arc.File.View.ReadInt32 (offset+8),
OffsetY = arc.File.View.ReadInt32 (offset+12),
BPP = 32,
FirstOffset = (uint)(offset + 0x14),
Incremental = 0 != (arc.File.View.ReadUInt32 (offset+0x10) & 0x80000000u),
};
using (var input = arc.File.CreateStream (0, (uint)arc.File.MaxOffset))
using (var reader = new S25Format.Reader (input, info))
{
return TgaStream.Create (info, reader.Unpack());
}
}
