public EriMultiImage(ArcView arc, ArchiveFormat impl, ICollection <Entry> dir, EriMetaData info, Color[] palette)
: base(arc, impl, dir)
{
Info = info;
Palette = palette;
Frames = new byte[dir.Count][];
}
internal EriReader ReadImageData(IBinaryStream stream, EriMetaData meta)
{
stream.Position = meta.StreamPos;
Color[] palette = null;
using (var input = new EriFile(stream.AsStream))
{
for (;;) // ReadSection throws an exception in case of EOF
{
var section = input.ReadSection();
if ("Stream " == section.Id)
{
continue;
}
if ("ImageFrm" == section.Id)
{
break;
}
if ("Palette " == section.Id && meta.BPP <= 8 && section.Length <= 0x400)
{
palette = ReadPalette(stream.AsStream, (int)section.Length);
continue;
}
input.BaseStream.Seek(section.Length, SeekOrigin.Current);
}
}
var reader = new EriReader(stream.AsStream, meta, palette);
reader.DecodeImage();
if (!string.IsNullOrEmpty(meta.Description))
{
var tags = ParseTagInfo(meta.Description);
string ref_file;
if (tags.TryGetValue("reference-file", out ref_file))
{
ref_file = ref_file.TrimEnd(null);
if (!string.IsNullOrEmpty(ref_file))
{
if ((meta.BPP + 7) / 8 < 3)
{
throw new InvalidFormatException();
}
ref_file = VFS.CombinePath(VFS.GetDirectoryName(meta.FileName), ref_file);
using (var ref_src = VFS.OpenBinaryStream(ref_file))
{
var ref_info = ReadMetaData(ref_src) as EriMetaData;
if (null == ref_info)
{
throw new FileNotFoundException("Referenced image not found", ref_file);
}
ref_info.FileName = ref_file;
var ref_reader = ReadImageData(ref_src, ref_info);
reader.AddImageBuffer(ref_reader);
}
}
}
}
return(reader);
}
void AddImageBuffer(EriMetaData dst_info, byte[] dst_img, EriMetaData src_info, byte[] src_img)
{
int src_bpp = (src_info.BPP + 7) / 8;
int dst_bpp = (dst_info.BPP + 7) / 8;
bool has_alpha = src_bpp == 4 && src_bpp == dst_bpp;
int dst = 0;
int src = 0;
while (dst < dst_img.Length)
{
dst_img[dst] += src_img[src];
dst_img[dst + 1] += src_img[src + 1];
dst_img[dst + 2] += src_img[src + 2];
if (has_alpha)
{
dst_img[dst + 3] += src_img[src + 3];
}
dst += dst_bpp;
src += src_bpp;
}
}
public EriMultiImage(ArcView arc, ArchiveFormat impl, ICollection <Entry> dir, EriMetaData info, Color[] palette)
: base(arc, impl, dir)
{
Info = info;
Palette = palette;
Frames = new byte[dir.Count][];
if (8 == Info.BPP)
{
if (null == Palette)
{
Format = PixelFormats.Gray8;
}
else
{
Format = PixelFormats.Indexed8;
}
}
else if (32 == Info.BPP)
{
if (0 == (Info.FormatType & EriType.WithAlpha))
{
Format = PixelFormats.Bgr32;
}
else
{
Format = PixelFormats.Bgra32;
}
}
else if (16 == Info.BPP)
{
Format = PixelFormats.Bgr555;
}
else
{
Format = PixelFormats.Bgr24;
}
}
} // 'Enti'
public override ImageMetaData ReadMetaData(IBinaryStream stream)
{
var header = stream.ReadHeader(0x40);
if (0x03000100 != header.ToUInt32(8))
{
return(null);
}
if (!header.AsciiEqual(0x10, "Entis Rasterized Image") &&
!header.AsciiEqual(0x10, "Moving Entis Image"))
{
return(null);
}
using (var reader = new EriFile(stream.AsStream))
{
var section = reader.ReadSection();
if (section.Id != "Header " || section.Length <= 0)
{
return(null);
}
int header_size = (int)section.Length;
int stream_pos = 0x50 + header_size;
EriFileHeader file_header = null;
EriMetaData info = null;
string desc = null;
while (header_size > 0x10)
{
section = reader.ReadSection();
header_size -= 0x10;
if (section.Length <= 0 || section.Length > header_size)
{
break;
}
if ("FileHdr " == section.Id)
{
file_header = new EriFileHeader {
Version = reader.ReadInt32()
};
if (file_header.Version > 0x00020100)
{
throw new InvalidFormatException("Invalid ERI file version");
}
file_header.ContainedFlag = reader.ReadInt32();
file_header.KeyFrameCount = reader.ReadInt32();
file_header.FrameCount = reader.ReadInt32();
file_header.AllFrameTime = reader.ReadInt32();
}
else if ("ImageInf" == section.Id)
{
int version = reader.ReadInt32();
if (version != 0x00020100 && version != 0x00020200)
{
return(null);
}
info = new EriMetaData {
StreamPos = stream_pos, Version = version
};
info.Transformation = (CvType)reader.ReadInt32();
info.Architecture = (EriCode)reader.ReadInt32();
info.FormatType = (EriType)reader.ReadInt32();
int w = reader.ReadInt32();
int h = reader.ReadInt32();
info.Width = (uint)Math.Abs(w);
info.Height = (uint)Math.Abs(h);
info.VerticalFlip = h < 0;
info.BPP = reader.ReadInt32();
info.ClippedPixel = reader.ReadInt32();
info.SamplingFlags = (EriSampling)reader.ReadInt32();
info.QuantumizedBits = reader.ReadUInt64();
info.AllottedBits = reader.ReadUInt64();
info.BlockingDegree = reader.ReadInt32();
info.LappedBlock = reader.ReadInt32();
info.FrameTransform = reader.ReadInt32();
info.FrameDegree = reader.ReadInt32();
}
else if ("descript" == section.Id)
{
if (0xFEFF == reader.PeekChar())
{
reader.Read();
var desc_chars = reader.ReadChars((int)section.Length / 2 - 1);
desc = new string (desc_chars);
}
else
{
var desc_chars = reader.ReadBytes((int)section.Length);
desc = Encoding.UTF8.GetString(desc_chars);
}
}
else
{
reader.BaseStream.Seek(section.Length, SeekOrigin.Current);
}
header_size -= (int)section.Length;
}
if (info != null)
{
if (file_header != null)
{
info.Header = file_header;
}
if (desc != null)
{
info.Description = desc;
}
}
return(info);
}
}
public EriReader (Stream stream, EriMetaData info, Color[] palette, byte[] key_frame = null)
{
m_info = info;
m_src_frame = key_frame;
switch (m_info.Architecture)
{
case EriCode.Nemesis:
case EriCode.RunlengthHuffman:
case EriCode.RunlengthGamma:
if (CvType.Lossless_ERI == m_info.Transformation && 0 == m_info.BlockingDegree)
throw new InvalidFormatException();
break;
case EriCode.ArithmeticCode:
if (CvType.Lossless_ERI != m_info.Transformation)
throw new InvalidFormatException();
break;
default:
throw new InvalidFormatException();
}
switch (m_info.FormatType & EriType.Mask)
{
case EriType.RGB:
if (m_info.BPP <= 8)
m_nChannelCount = 1;
else if (0 == (m_info.FormatType & EriType.WithAlpha))
m_nChannelCount = 3;
else
m_nChannelCount = 4;
break;
case EriType.Gray:
m_nChannelCount = 1;
break;
default:
throw new InvalidFormatException();
}
if (CvType.Lossless_ERI == m_info.Transformation)
InitializeLossless();
else if (CvType.LOT_ERI == m_info.Transformation
|| CvType.DCT_ERI == m_info.Transformation)
InitializeLossy();
else
throw new NotSupportedException ("Not supported ERI compression");
if (null != palette)
Palette = new BitmapPalette (palette);
CreateImageBuffer();
m_context.AttachInputFile (stream);
m_pfnColorOperation = new PtrProcedure[0x10]
{
ColorOperation0000,
ColorOperation0000,
ColorOperation0000,
ColorOperation0000,
ColorOperation0000,
ColorOperation0101,
ColorOperation0110,
ColorOperation0111,
ColorOperation0000,
ColorOperation1001,
ColorOperation1010,
ColorOperation1011,
ColorOperation0000,
ColorOperation1101,
ColorOperation1110,
ColorOperation1111
};
}
void AddImageBuffer(EriMetaData dst_info, byte[] dst_img, EriMetaData src_info, byte[] src_img)
{
int src_bpp = (src_info.BPP + 7) / 8;
int dst_bpp = (dst_info.BPP + 7) / 8;
bool has_alpha = src_bpp == 4 && src_bpp == dst_bpp;
int dst = 0;
int src = 0;
while (dst < dst_img.Length)
{
dst_img[dst ] += src_img[src ];
dst_img[dst+1] += src_img[src+1];
dst_img[dst+2] += src_img[src+2];
if (has_alpha)
dst_img[dst+3] += src_img[src+3];
dst += dst_bpp;
src += src_bpp;
}
}
internal EriReader ReadImageData(Stream stream, EriMetaData meta)
{
stream.Position = meta.StreamPos;
Color[] palette = null;
using (var input = new EriFile (stream))
{
for (;;) // ReadSection throws an exception in case of EOF
{
var section = input.ReadSection();
if ("Stream " == section.Id)
continue;
if ("ImageFrm" == section.Id)
break;
if ("Palette " == section.Id && meta.BPP <= 8 && section.Length <= 0x400)
{
palette = ReadPalette (stream, (int)section.Length);
continue;
}
input.BaseStream.Seek (section.Length, SeekOrigin.Current);
}
}
var reader = new EriReader (stream, meta, palette);
reader.DecodeImage();
if (!string.IsNullOrEmpty (meta.Description))
{
var tags = ParseTagInfo (meta.Description);
string ref_file;
if (tags.TryGetValue ("reference-file", out ref_file))
{
ref_file = ref_file.TrimEnd (null);
if (!string.IsNullOrEmpty (ref_file))
{
if ((meta.BPP + 7) / 8 < 3)
throw new InvalidFormatException();
ref_file = VFS.CombinePath (VFS.GetDirectoryName (meta.FileName), ref_file);
using (var ref_src = VFS.OpenSeekableStream (ref_file))
{
var ref_info = ReadMetaData (ref_src) as EriMetaData;
if (null == ref_info)
throw new FileNotFoundException ("Referenced image not found");
ref_info.FileName = ref_file;
var ref_reader = ReadImageData (ref_src, ref_info);
AddImageBuffer (meta, reader.Data, ref_info, ref_reader.Data);
}
}
}
}
return reader;
}
public override ImageMetaData ReadMetaData(Stream stream)
{
byte[] header = new byte[0x40];
if (header.Length != stream.Read (header, 0, header.Length))
return null;
if (0x03000100 != LittleEndian.ToUInt32 (header, 8))
return null;
if (!Binary.AsciiEqual (header, 0x10, "Entis Rasterized Image")
&& !Binary.AsciiEqual (header, 0x10, "Moving Entis Image"))
return null;
using (var reader = new EriFile (stream))
{
var section = reader.ReadSection();
if (section.Id != "Header " || section.Length <= 0)
return null;
int header_size = (int)section.Length;
int stream_pos = 0x50 + header_size;
EriFileHeader file_header = null;
EriMetaData info = null;
string desc = null;
while (header_size > 0x10)
{
section = reader.ReadSection();
header_size -= 0x10;
if (section.Length <= 0 || section.Length > header_size)
break;
if ("FileHdr " == section.Id)
{
file_header = new EriFileHeader { Version = reader.ReadInt32() };
if (file_header.Version > 0x00020100)
throw new InvalidFormatException ("Invalid ERI file version");
file_header.ContainedFlag = reader.ReadInt32();
file_header.KeyFrameCount = reader.ReadInt32();
file_header.FrameCount = reader.ReadInt32();
file_header.AllFrameTime = reader.ReadInt32();
}
else if ("ImageInf" == section.Id)
{
int version = reader.ReadInt32();
if (version != 0x00020100 && version != 0x00020200)
return null;
info = new EriMetaData { StreamPos = stream_pos, Version = version };
info.Transformation = (CvType)reader.ReadInt32();
info.Architecture = (EriCode)reader.ReadInt32();
info.FormatType = (EriType)reader.ReadInt32();
int w = reader.ReadInt32();
int h = reader.ReadInt32();
info.Width = (uint)Math.Abs (w);
info.Height = (uint)Math.Abs (h);
info.VerticalFlip = h < 0;
info.BPP = reader.ReadInt32();
info.ClippedPixel = reader.ReadInt32();
info.SamplingFlags = (EriSampling)reader.ReadInt32();
info.QuantumizedBits = reader.ReadUInt64();
info.AllottedBits = reader.ReadUInt64();
info.BlockingDegree = reader.ReadInt32();
info.LappedBlock = reader.ReadInt32();
info.FrameTransform = reader.ReadInt32();
info.FrameDegree = reader.ReadInt32();
}
else if ("descript" == section.Id)
{
if (0xFEFF == reader.PeekChar())
{
reader.Read();
var desc_chars = reader.ReadChars ((int)section.Length/2 - 1);
desc = new string (desc_chars);
}
else
{
var desc_chars = reader.ReadBytes ((int)section.Length);
desc = Encoding.UTF8.GetString (desc_chars);
}
}
else
{
reader.BaseStream.Seek (section.Length, SeekOrigin.Current);
}
header_size -= (int)section.Length;
}
if (info != null)
{
if (file_header != null)
info.Header = file_header;
if (desc != null)
info.Description = desc;
}
return info;
}
}
