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(EriFormat): implemented reference-based images (#14)

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This commit is contained in:
morkt 2016-01-27 11:46:49 +04:00
parent 82f7c2de16
commit 74a8964353
1 changed files with 172 additions and 29 deletions
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201
ArcFormats/Entis/ImageERI.cs
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@ -24,8 +24,11 @@
//
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;
@ -47,6 +50,8 @@ namespace GameRes.Formats.Entis
public int LappedBlock;
public int FrameTransform;
public int FrameDegree;
public EriFileHeader Header;
public string Description;
}
public enum CvType
@ -57,6 +62,15 @@ namespace GameRes.Formats.Entis
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
{
RunlengthGamma = -1,
@ -84,7 +98,7 @@ namespace GameRes.Formats.Entis
public long Length;
}
public EriFile (Stream stream) : base (stream, System.Text.Encoding.ASCII, true)
public EriFile (Stream stream) : base (stream, Encoding.Unicode, true)
{
}
@ -138,14 +152,27 @@ namespace GameRes.Formats.Entis
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 > 8)
{
section = reader.ReadSection();
header_size -= 8;
if (section.Length <= 0 || section.Length > header_size)
break;
if ("ImageInf" == section.Id)
if ("FileHdr " == section.Id)
{
file_header = new EriFileHeader();
file_header.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)
@ -168,10 +195,33 @@ namespace GameRes.Formats.Entis
info.LappedBlock = reader.ReadInt32();
info.FrameTransform = reader.ReadInt32();
info.FrameDegree = reader.ReadInt32();
break;
}
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;
reader.BaseStream.Seek (section.Length, SeekOrigin.Current);
}
if (info != null)
{
if (file_header != null)
info.Header = file_header;
if (desc != null)
info.Description = desc;
}
return info;
}
@ -179,31 +229,8 @@ namespace GameRes.Formats.Entis
public override ImageData Read (Stream stream, ImageMetaData info)
{
var meta = info as EriMetaData;
if (null == meta)
throw new ArgumentException ("EriFormat.Read should be supplied with EriMetaData", "info");
stream.Position = meta.StreamPos;
using (var input = new EriFile (stream))
{
Color[] palette = null;
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 && info.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();
return ImageData.Create (info, reader.Format, reader.Palette, reader.Data, reader.Stride);
}
var reader = ReadImageData (stream, (EriMetaData)info);
return ImageData.Create (info, reader.Format, reader.Palette, reader.Data, reader.Stride);
}
private Color[] ReadPalette (Stream input, int palette_length)
@ -221,6 +248,122 @@ namespace GameRes.Formats.Entis
return colors;
}
private EriReader ReadImageData (Stream stream, EriMetaData meta)
{
stream.Position = meta.StreamPos;
using (var input = new EriFile (stream))
{
Color[] palette = null;
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");