public IpfReader(IBinaryStream input, IpfMetaData info)
{
m_input = input;
m_info = info;
m_output = new byte[m_info.Width * m_info.Height];
Format = m_info.HasPalette ? PixelFormats.Indexed8 : PixelFormats.Gray8;
}
} // 'RIFF'
internal IpfMetaData ReadIpfHeader(IBinaryStream file)
{
// 'RIFF' isn't included into signature to avoid auto-detection of the WAV files as IPF images.
if (0x46464952 != file.Signature) // 'RIFF'
{
return(null);
}
var header = file.ReadHeader(0x14);
if (!header.AsciiEqual(0xC, "fmt "))
{
return(null);
}
int fmt_size = header.ToInt32(0x10);
if (fmt_size < 0x24)
{
return(null);
}
header = file.ReadHeader(0x14 + fmt_size);
var info = new IpfMetaData {
BPP = 8,
HasPalette = header.ToInt32(0x18) != 0,
HasBitmap = header.ToInt32(0x28) != 0,
FormatString = header.GetCString(8, 8),
};
if (info.HasPalette)
{
if (0x206C6170 != file.ReadInt32()) // 'pal '
{
return(null);
}
info.PalSize = file.ReadInt32();
if (info.PalSize < 0x24)
{
return(null);
}
info.PalOffset = file.Position;
file.Position = info.PalOffset + info.PalSize;
}
info.DataOffset = file.Position;
return(info);
}
internal bool ReadBmpInfo(IBinaryStream file, IpfMetaData info)
{
if (0x20706D62 != file.ReadInt32()) // 'bmp '
{
return(false);
}
int bmp_size = file.ReadInt32();
if (bmp_size <= 0x20)
{
return(false);
}
info.BmpOffset = file.Position + 0x18;
info.Width = file.ReadUInt16();
info.Height = file.ReadUInt16();
file.ReadUInt32();
info.OffsetX = file.ReadInt16();
info.OffsetY = file.ReadInt16();
file.Seek(6, SeekOrigin.Current);
info.IsCompressed = 0 != (file.ReadByte() & 1);
return(true);
}
public IpqArchive(ArcView arc, ArchiveFormat impl, ICollection <Entry> dir, IpfMetaData info)
: base(arc, impl, dir)
{
Info = info;
}
} // 'RIFF'
public override ImageMetaData ReadMetaData(IBinaryStream file)
{
// 'RIFF' isn't included into signature to avoid auto-detection of the WAV files as IPF images.
if (0x46464952 != file.Signature) // 'RIFF'
{
return(null);
}
var header = file.ReadHeader(0x14);
if (!header.AsciiEqual(8, "IPF fmt "))
{
return(null);
}
int fmt_size = header.ToInt32(0x10);
if (fmt_size < 0x24)
{
return(null);
}
header = file.ReadHeader(0x14 + fmt_size);
bool has_palette = header.ToInt32(0x18) != 0;
bool has_bitmap = header.ToInt32(0x28) != 0;
if (!has_bitmap)
{
return(null);
}
var info = new IpfMetaData {
BPP = 8, HasPalette = has_palette
};
if (has_palette)
{
if (0x206C6170 != file.ReadInt32()) // 'pal '
{
return(null);
}
info.PalSize = file.ReadInt32();
if (info.PalSize < 0x24)
{
return(null);
}
info.PalOffset = file.Position;
file.Position = info.PalOffset + info.PalSize;
}
if (0x20706D62 != file.ReadInt32()) // 'bmp '
{
return(null);
}
int bmp_size = file.ReadInt32();
if (bmp_size <= 0x20)
{
return(null);
}
info.BmpOffset = file.Position + 0x18;
info.Width = file.ReadUInt16();
info.Height = file.ReadUInt16();
file.Seek(0xE, SeekOrigin.Current);
info.IsCompressed = 0 != (file.ReadByte() & 1);
return(info);
}
