mirror of
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358 lines
12 KiB
C#
358 lines
12 KiB
C#
//! \file ArcABM.cs
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//! \date Tue Aug 04 23:40:47 2015
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//! \brief LiLiM/Le.Chocolat multi-frame compressed bitmaps.
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//
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// Copyright (C) 2015 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 GameRes.Utility;
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namespace GameRes.Formats.Lilim
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{
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internal class AbmArchive : ArcFile
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{
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public readonly AbmImageData FrameInfo;
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public AbmArchive (ArcView arc, ArchiveFormat impl, ICollection<Entry> dir, AbmImageData info)
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: base (arc, impl, dir)
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{
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FrameInfo = info;
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}
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}
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internal class AbmImageData : ImageMetaData
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{
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public int Mode;
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public uint BaseOffset;
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public uint FrameOffset;
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public AbmImageData Clone ()
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{
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return this.MemberwiseClone() as AbmImageData;
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}
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}
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internal class AbmEntry : PackedEntry
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{
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public int Index;
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}
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[Export(typeof(ArchiveFormat))]
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public class AbmOpener : ArchiveFormat
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{
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public override string Tag { get { return "ABM"; } }
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public override string Description { get { return "LiLiM/Le.Chocolat multi-frame bitmap"; } }
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public override uint Signature { get { return 0; } }
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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 override ArcFile TryOpen (ArcView file)
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{
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if ('B' != file.View.ReadByte (0) || 'M' != file.View.ReadByte (1))
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return null;
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int type = file.View.ReadSByte (0x1C);
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if (type != 1 && type != 2)
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return null;
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int count = file.View.ReadInt16 (0x3A);
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if (!IsSaneCount (count))
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return null;
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uint width = file.View.ReadUInt32 (0x12);
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uint height = file.View.ReadUInt32 (0x16);
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int pixel_size = 2 == type ? 4 : 3;
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uint bitmap_data_size = width*height*(uint)pixel_size;
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var dir = new List<Entry> (count);
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long next_offset = file.View.ReadUInt32 (0x42);
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uint current_offset = 0x46;
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string base_name = Path.GetFileNameWithoutExtension (file.Name);
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for (int i = 0; i < count; ++i)
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{
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var entry = new AbmEntry {
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Name = string.Format ("{0}#{1:D4}.tga", base_name, i),
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Type = "image",
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Offset = next_offset,
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Index = i,
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};
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if (i + 1 != count)
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{
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next_offset = file.View.ReadUInt32 (current_offset);
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current_offset += 4;
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}
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else
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next_offset = file.MaxOffset;
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if (next_offset <= entry.Offset)
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return null;
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entry.Size = (uint)(next_offset - entry.Offset);
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if (!entry.CheckPlacement (file.MaxOffset))
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return null;
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entry.UnpackedSize = 0x12 + bitmap_data_size;
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dir.Add (entry);
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}
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var image_info = new AbmImageData
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{
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Width = (uint)width,
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Height = (uint)height,
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BPP = pixel_size * 8,
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Mode = type,
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BaseOffset = (uint)dir[0].Offset,
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};
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return new AbmArchive (file, this, dir, image_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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var abm = arc as AbmArchive;
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var frame = entry as AbmEntry;
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if (null == abm || null == frame)
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return arc.File.CreateStream (entry.Offset, entry.Size);
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var frame_info = abm.FrameInfo;
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if (frame.Index != 0)
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{
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frame_info = frame_info.Clone();
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frame_info.FrameOffset = (uint)frame.Offset;
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}
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using (var input = arc.File.CreateStream (0, (uint)arc.File.MaxOffset))
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using (var reader = new AbmReader (input, frame_info))
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{
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// emulate TGA image
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var header = new byte[0x12];
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header[2] = 2;
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LittleEndian.Pack ((ushort)frame_info.Width, header, 0xC);
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LittleEndian.Pack ((ushort)frame_info.Height, header, 0xE);
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header[0x10] = (byte)reader.BPP;
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header[0x11] = 0x20;
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var pixels = reader.Unpack();
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return new PrefixStream (header, new MemoryStream (pixels));
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}
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}
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}
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internal sealed class AbmReader : IDisposable
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{
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BinaryReader m_input;
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byte[] m_output;
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AbmImageData m_info;
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int m_bpp;
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public byte[] Data { get { return m_output; } }
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public int BPP { get { return m_bpp; } }
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public AbmReader (Stream file, AbmImageData info)
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{
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m_info = info;
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if (2 == m_info.Mode)
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{
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m_bpp = 32;
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file.Position = m_info.BaseOffset;
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using (var base_frame = new ArcView.Reader (file))
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m_output = UnpackV2 (base_frame);
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}
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else if (1 == m_info.Mode || 32 == m_info.Mode || 24 == m_info.Mode)
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{
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if (1 == m_info.Mode)
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m_bpp = 24;
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else
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m_bpp = m_info.Mode;
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int total_length = (int)(m_info.Width * m_info.Height * m_bpp / 8);
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m_output = new byte[total_length];
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file.Position = m_info.BaseOffset;
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if (1 == m_info.Mode)
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{
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if (total_length != file.Read (m_output, 0, (total_length)))
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throw new EndOfStreamException();
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}
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else
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{
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using (var base_frame = new ArcView.Reader (file))
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{
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if (24 == m_bpp)
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UnpackStream24 (base_frame, m_output, total_length);
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else
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UnpackStream32 (base_frame, m_output, total_length);
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}
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}
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}
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else
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throw new NotImplementedException();
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if (0 != m_info.FrameOffset)
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{
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m_input = new ArcView.Reader (file);
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}
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}
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int frame_x;
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int frame_y;
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int frame_w;
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int frame_h;
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public byte[] Unpack ()
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{
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if (null == m_input)
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return m_output;
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m_input.BaseStream.Position = m_info.FrameOffset;
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if (1 == m_info.Mode)
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return UnpackStream24 (m_input, m_output, m_output.Length);
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if (2 == m_info.Mode)
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{
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var frame = UnpackV2 (m_input);
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CopyFrame (frame);
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return m_output;
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}
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throw new NotImplementedException();
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}
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byte[] UnpackV2 (BinaryReader input)
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{
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frame_x = input.ReadInt32();
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frame_y = input.ReadInt32();
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frame_w = input.ReadInt32();
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frame_h = input.ReadInt32();
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if (frame_x < 0 || frame_y < 0 || frame_w <= 0 || frame_h <= 0)
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throw new InvalidFormatException();
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int total_length = frame_w * frame_h * m_bpp / 8;
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byte[] output = new byte[total_length];
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input.ReadByte(); // position number
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return UnpackStream32 (input, output, total_length);
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}
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byte[] UnpackStream24 (BinaryReader input, byte[] output, int total_length)
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{
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int dst = 0;
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while (dst < total_length)
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{
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int v = input.ReadByte();
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if (0 == v)
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{
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int count = input.ReadByte();
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if (0 == count)
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continue;
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dst += count;
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}
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else if (0xff == v)
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{
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int count = input.ReadByte();
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if (0 == count)
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continue;
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count = Math.Min (count, total_length-dst);
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input.Read (output, dst, count);
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dst += count;
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}
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else
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{
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output[dst++] = input.ReadByte();
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}
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}
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return output;
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}
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byte[] UnpackStream32 (BinaryReader input, byte[] output, int total_length)
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{
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int dst = 0;
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int component = 0;
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while (dst < total_length)
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{
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byte v = input.ReadByte();
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if (0 == v)
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{
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int count = input.ReadByte();
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if (0 == count)
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continue;
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for (int i = 0; i < count; ++i)
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{
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++dst;
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if (++component == 3)
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{
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++dst;
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component = 0;
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}
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}
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}
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else if (0xff == v)
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{
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int count = input.ReadByte();
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if (0 == count)
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continue;
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for (int i = 0; i < count && dst < total_length; ++i)
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{
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output[dst++] = input.ReadByte();
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if (++component == 3)
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{
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output[dst++] = 0xff;
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component = 0;
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}
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}
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}
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else
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{
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output[dst++] = input.ReadByte();
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if (++component == 3)
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{
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output[dst++] = v;
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component = 0;
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}
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}
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}
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return output;
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}
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void CopyFrame (byte[] frame)
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{
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if (frame_x >= m_info.Width || frame_y >= m_info.Height)
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return;
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int pixel_size = m_bpp / 8;
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int line_size = Math.Min (frame_w, (int)m_info.Width-frame_x) * pixel_size;
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int left = frame_x * pixel_size;
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int bottom = Math.Min (frame_y+frame_h, (int)m_info.Height);
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int stride = (int)m_info.Width * pixel_size;
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int src = 0;
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for (int y = frame_y; y < bottom; ++y)
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{
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int dst = stride * y + left;
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Buffer.BlockCopy (frame, src, m_output, dst, line_size);
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src += frame_w * pixel_size;
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}
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}
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#region IDisposable Members
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bool m_disposed = false;
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public void Dispose ()
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{
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if (!m_disposed)
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{
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if (m_input != null)
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m_input.Dispose();
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m_disposed = true;
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GC.SuppressFinalize (this);
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}
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}
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#endregion
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}
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}
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