mirror of
https://github.com/crskycode/GARbro.git
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210 lines
8.7 KiB
C#
210 lines
8.7 KiB
C#
//! \file ArcCHR.cs
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//! \date Mon Oct 26 07:26:39 2015
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//! \brief Multi-frame PNG archive.
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//
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// Copyright (C) 2015-2018 by morkt
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to
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// deal in the Software without restriction, including without limitation the
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// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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// sell copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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// IN THE SOFTWARE.
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//
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using System;
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using System.Collections.Generic;
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using System.ComponentModel.Composition;
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using System.IO;
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using System.Linq;
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using System.Text;
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using System.Windows;
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using System.Windows.Media;
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using System.Windows.Media.Imaging;
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using GameRes.Utility;
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namespace GameRes.Formats.Palette
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{
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internal class CharEntry : Entry
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{
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public int OffsetX;
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public int OffsetY;
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}
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internal class VirtualCharEntry : Entry
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{
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public CharEntry Source;
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}
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[Export(typeof(ArchiveFormat))]
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public class ChrOpener : ArchiveFormat
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{
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public override string Tag { get { return "CHR/Palette"; } }
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public override string Description { get { return "Palette multi-frame PNG archive"; } }
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public override uint Signature { get { return 0x72616863; } } // 'char'
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public override bool IsHierarchic { get { return false; } }
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public override bool CanWrite { get { return false; } }
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public ChrOpener ()
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{
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Extensions = new string[] { "chr" };
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}
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public override ArcFile TryOpen (ArcView file)
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{
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uint index_offset = file.View.ReadUInt32 (4);
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int count = file.View.ReadInt32 (index_offset)+1;
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if (!IsSaneCount (count))
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return null;
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string base_name = Path.GetFileNameWithoutExtension (file.Name);
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var dir = new List<Entry> (count);
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dir.Add (new Entry {
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Name = string.Format ("{0}#0.png", base_name),
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Type = "image", Offset = 8, Size = index_offset-8
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});
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index_offset += 4;
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for (int i = 1; i < count; ++i)
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{
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uint name_length = file.View.ReadByte (index_offset++);
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var name = file.View.ReadString (index_offset, name_length);
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uint size = file.View.ReadUInt32 (index_offset+name_length);
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index_offset += name_length + 4;
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if (size > 8)
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{
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var entry = new CharEntry
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{
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Name = string.Format ("{0}#{1}.png", base_name, name),
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Type = "image",
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Offset = index_offset+8,
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Size = size-8,
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OffsetX = file.View.ReadInt16 (index_offset),
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OffsetY = file.View.ReadInt16 (index_offset+2),
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//Width = file.View.ReadUInt16 (index_offset+4),
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//Height = file.View.ReadUInt16 (index_offset+6),
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};
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dir.Add (entry);
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var virt_entry = new VirtualCharEntry {
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Name = string.Format ("{0}#blend#{1}.png", base_name, name),
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Type = "image",
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Source = entry,
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Offset = 0,
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};
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dir.Add (virt_entry);
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}
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index_offset += size;
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}
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return new ArcFile (file, this, dir);
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}
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public override IImageDecoder OpenImage (ArcFile arc, Entry entry)
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{
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if (entry is VirtualCharEntry)
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return BlendEntry (arc, entry as VirtualCharEntry);
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var input = arc.OpenBinaryEntry (entry);
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var info = ImageFormat.Png.ReadMetaData (input);
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input.Position = 0;
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return new ImageFormatDecoder (input, ImageFormat.Png, info);
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}
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public override Stream OpenEntry (ArcFile arc, Entry entry)
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{
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if (entry is VirtualCharEntry)
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return Stream.Null;
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int extra_length = PgaFormat.PngHeader.Length + PgaFormat.PngFooter.Length;
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var png = new MemoryStream ((int)entry.Size + extra_length + 17);
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var cent = entry as CharEntry;
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png.Write (PgaFormat.PngHeader, 0, PgaFormat.PngHeader.Length);
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using (var body = arc.File.CreateStream (entry.Offset, entry.Size))
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{
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if (cent != null && cent != arc.Dir.First()
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&& (cent.OffsetX != 0 || cent.OffsetY != 0))
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{
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// inject oFFs chunk into PNG stream
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using (var reader = new BinaryReader (body, Encoding.ASCII, true))
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using (var writer = new BinaryWriter (png, Encoding.ASCII, true))
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{
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var ihdr_size = reader.ReadInt32();
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writer.Write (ihdr_size);
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ihdr_size = Binary.BigEndian (ihdr_size);
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writer.Write (reader.ReadBytes (ihdr_size+8));
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writer.Write (Binary.BigEndian ((int)9));
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int position = (int)writer.BaseStream.Position;
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char[] tag = { 'o', 'F', 'F', 's' };
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writer.Write (tag);
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writer.Write (Binary.BigEndian (cent.OffsetX));
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writer.Write (Binary.BigEndian (cent.OffsetY));
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writer.Write ((byte)0);
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uint crc = Crc32.Compute (png.GetBuffer(), position, 13);
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writer.Write (Binary.BigEndian (crc));
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}
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}
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body.CopyTo (png);
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}
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png.Write (PgaFormat.PngFooter, 0, PgaFormat.PngFooter.Length);
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png.Position = 0;
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return png;
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}
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IImageDecoder BlendEntry (ArcFile arc, VirtualCharEntry entry)
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{
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using (var base_png = OpenEntry (arc, arc.Dir.First()))
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using (var overlay_png = OpenEntry (arc, entry.Source))
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{
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var decoder = new PngBitmapDecoder (base_png, BitmapCreateOptions.None, BitmapCacheOption.OnLoad);
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var base_frame = decoder.Frames[0];
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decoder = new PngBitmapDecoder (overlay_png, BitmapCreateOptions.None, BitmapCacheOption.OnLoad);
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var overlay_frame = decoder.Frames[0];
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int overlay_x = entry.Source.OffsetX;
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int overlay_y = entry.Source.OffsetY;
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var visual = new DrawingVisual();
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using (var context = visual.RenderOpen())
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{
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context.DrawImage (base_frame, new Rect (0, 0, base_frame.PixelWidth, base_frame.PixelHeight));
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context.DrawImage (overlay_frame, new Rect (overlay_x, overlay_y, overlay_frame.PixelWidth, overlay_frame.PixelHeight));
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}
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var bmp = new RenderTargetBitmap (base_frame.PixelWidth, base_frame.PixelHeight,
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base_frame.DpiX, base_frame.DpiY, PixelFormats.Pbgra32);
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bmp.Render (visual);
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var base_info = new ImageMetaData {
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Width = (uint)bmp.PixelWidth,
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Height = (uint)bmp.PixelHeight,
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BPP = bmp.Format.BitsPerPixel,
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};
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return new BitmapSourceDecoder (bmp, base_info);
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}
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}
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}
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internal class BitmapSourceDecoder : IImageDecoder
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{
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public Stream Source { get { return null; } }
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public ImageFormat SourceFormat { get { return null; } }
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public ImageMetaData Info { get; private set; }
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public ImageData Image { get; private set; }
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public BitmapSourceDecoder (BitmapSource bmp, ImageMetaData info)
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{
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Info = info;
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Image = new ImageData (bmp, info);
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}
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public void Dispose ()
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{
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}
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}
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}
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