GARbro-mirror/ArcFormats/Entis/ImageERI.cs
morkt 6a89368023 added broken implementation of ERI lossy images.
also reorganized Entis-related classes and enums. static math methods
moved to separate static class.
2016-02-29 12:35:48 +04:00

386 lines
14 KiB
C#

//! \file ImageERI.cs
//! \date Tue May 26 12:04:30 2015
//! \brief Entis rasterized image format.
//
// Copyright (C) 2015 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.Collections.Generic;
using System.ComponentModel.Composition;
using System.IO;
using System.Text;
using System.Text.RegularExpressions;
using System.Windows.Media;
using GameRes.Utility;
namespace GameRes.Formats.Entis
{
internal class EriMetaData : ImageMetaData
{
public int StreamPos;
public int Version;
public CvType Transformation;
public EriCode Architecture;
public EriType FormatType;
public bool VerticalFlip;
public int ClippedPixel;
public EriSampling SamplingFlags;
public ulong QuantumizedBits;
public ulong AllottedBits;
public int BlockingDegree;
public int LappedBlock;
public int FrameTransform;
public int FrameDegree;
public EriFileHeader Header;
public string Description;
}
public enum CvType
{
Lossless_ERI = 0x03020000,
DCT_ERI = 0x00000001,
LOT_ERI = 0x00000005,
LOT_ERI_MSS = 0x00000105,
}
internal class EriFileHeader
{
public int Version;
public int ContainedFlag;
public int KeyFrameCount;
public int FrameCount;
public int AllFrameTime;
}
public enum EriCode
{
ArithmeticCode = 32,
RunlengthGamma = -1,
RunlengthHuffman = -4,
Nemesis = -16,
}
[Flags]
public enum EriType
{
RGB = 0x00000001,
Gray = 0x00000002,
BGR = 0x00000003,
YUV = 0x00000004,
HSB = 0x00000006,
RGBA = 0x04000001,
BGRA = 0x04000003,
Mask = 0x0000FFFF,
WithPalette = 0x01000000,
UseClipping = 0x02000000,
WithAlpha = 0x04000000,
SideBySide = 0x10000000,
}
public enum EriSampling
{
YUV_4_4_4 = 0x00040404,
YUV_4_2_2 = 0x00040202,
YUV_4_1_1 = 0x00040101,
}
internal class EriFile : BinaryReader
{
internal struct Section
{
public AsciiString Id;
public long Length;
}
public EriFile (Stream stream) : base (stream, Encoding.Unicode, true)
{
}
public Section ReadSection ()
{
var section = new Section();
section.Id = new AsciiString (8);
if (8 != this.Read (section.Id.Value, 0, 8))
throw new EndOfStreamException();
section.Length = this.ReadInt64();
return section;
}
public long FindSection (string name)
{
var id = new AsciiString (8);
for (;;)
{
if (8 != this.Read (id.Value, 0, 8))
throw new EndOfStreamException();
var length = this.ReadInt64();
if (length < 0)
throw new EndOfStreamException();
if (id == name)
return length;
this.BaseStream.Seek (length, SeekOrigin.Current);
}
}
}
[Export(typeof(ImageFormat))]
public class EriFormat : ImageFormat
{
public override string Tag { get { return "ERI"; } }
public override string Description { get { return "Entis rasterized image format"; } }
public override uint Signature { get { return 0x69746e45u; } } // 'Enti'
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;
}
}
public override ImageData Read (Stream stream, ImageMetaData info)
{
var reader = ReadImageData (stream, (EriMetaData)info);
return ImageData.Create (info, reader.Format, reader.Palette, reader.Data, reader.Stride);
}
internal static Color[] ReadPalette (Stream input, int palette_length)
{
var palette_data = new byte[0x400];
if (palette_length > palette_data.Length)
throw new InvalidFormatException();
if (palette_length != input.Read (palette_data, 0, palette_length))
throw new InvalidFormatException();
var colors = new Color[256];
for (int i = 0; i < 256; ++i)
{
colors[i] = Color.FromRgb (palette_data[i*4+2], palette_data[i*4+1], palette_data[i*4]);
}
return colors;
}
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 (Path.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;
}
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;
}
}
static readonly Regex s_TagRe = new Regex (@"^\s*#\s*(\S+)");
Dictionary<string, string> ParseTagInfo (string desc)
{
var dict = new Dictionary<string, string>();
if (string.IsNullOrEmpty (desc))
{
return dict;
}
if ('#' != desc[0])
{
dict["comment"] = desc;
return dict;
}
var tag_value = new StringBuilder();
using (var reader = new StringReader (desc))
{
string line = reader.ReadLine();
while (null != line)
{
var match = s_TagRe.Match (line);
if (!match.Success)
break;
string tag = match.Groups[1].Value;
tag_value.Clear();
for (;;)
{
line = reader.ReadLine();
if (null == line)
break;
if (line.StartsWith ("#"))
{
if (line.Length < 2 || '#' != line[1])
break;
line = line.Substring (1);
}
tag_value.AppendLine (line);
}
dict[tag] = tag_value.ToString();
}
}
return dict;
}
public override void Write (Stream file, ImageData image)
{
throw new NotImplementedException ("EriFormat.Write not implemented");
}
}
}