mirror of
https://github.com/crskycode/GARbro.git
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252 lines
9.1 KiB
C#
252 lines
9.1 KiB
C#
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//! \file ArcAN21.cs
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//! \date Sun Apr 30 21:04:25 2017
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//! \brief KaGuYa script engine animation resource.
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//
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// Copyright (C) 2017 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.Windows.Media;
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namespace GameRes.Formats.Kaguya
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{
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class An21Entry : PackedEntry
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{
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public int FrameIndex;
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public int RleStep;
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}
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[Export(typeof(ArchiveFormat))]
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public class An21Opener : ArchiveFormat
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{
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public override string Tag { get { return "AN21/KAGUYA"; } }
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public override string Description { get { return "KaGuYa script engine animation resource"; } }
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public override uint Signature { get { return 0x31324E41; } } // 'AN21'
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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 An21Opener ()
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{
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Extensions = new string[] { "anm" };
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}
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public override ArcFile TryOpen (ArcView file)
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{
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int table_count = file.View.ReadUInt16 (4);
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uint current_offset = 8;
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for (int i = 0; i < table_count; ++i)
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{
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switch (file.View.ReadByte (current_offset++))
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{
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case 0: break;
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case 1: current_offset += 8; break;
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case 2:
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case 3:
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case 4:
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case 5: current_offset += 4; break;
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default: return null;
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}
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}
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current_offset += 2 + file.View.ReadUInt16 (current_offset) * 8u;
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if (!file.View.AsciiEqual (current_offset, "[PIC]10"))
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return null;
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current_offset += 7;
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int frame_count = file.View.ReadInt16 (current_offset);
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if (!IsSaneCount (frame_count))
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return null;
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current_offset += 0x12;
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string base_name = Path.GetFileNameWithoutExtension (file.Name);
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var dir = new List<Entry> (frame_count);
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var info = new ImageMetaData
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{
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OffsetX = file.View.ReadInt32 (current_offset),
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OffsetY = file.View.ReadInt32 (current_offset+4),
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Width = file.View.ReadUInt32 (current_offset+8),
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Height = file.View.ReadUInt32 (current_offset+12),
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};
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int channels = file.View.ReadInt32 (current_offset+0x10);
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info.BPP = channels * 8;
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current_offset += 0x14;
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var entry = new An21Entry
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{
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FrameIndex = 0,
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Name = string.Format ("{0}#{1:D2}", base_name, 0),
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Type = "image",
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Offset = current_offset,
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Size = (uint)channels * info.Width * info.Height,
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IsPacked = false,
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};
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dir.Add (entry);
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current_offset += entry.Size;
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for (int i = 1; i < frame_count; ++i)
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{
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int step = file.View.ReadByte (current_offset++);
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if (0 == step)
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return null;
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uint packed_size = file.View.ReadUInt32 (current_offset);
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uint unpacked_size = (uint)(channels * (info.OffsetX + (int)info.Width)
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* (info.OffsetY + (int)info.Height));
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current_offset += 4;
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entry = new An21Entry
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{
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FrameIndex = i,
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Name = string.Format ("{0}#{1:D2}", base_name, i),
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Type = "image",
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Offset = current_offset,
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Size = packed_size,
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UnpackedSize = unpacked_size,
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IsPacked = true,
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RleStep = step,
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};
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dir.Add (entry);
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current_offset += packed_size;
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}
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return new An21Archive (file, this, dir, 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 anent = entry as An21Entry;
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var input = arc.File.CreateStream (entry.Offset, entry.Size);
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if (null == anent || !anent.IsPacked)
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return input;
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using (input)
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{
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var data = DecompressRLE (input, anent.UnpackedSize, anent.RleStep);
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return new BinMemoryStream (data);
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}
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}
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public override IImageDecoder OpenImage (ArcFile arc, Entry entry)
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{
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var anarc = (An21Archive)arc;
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var anent = (An21Entry)entry;
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var pixels = anarc.GetFrame (anent.FrameIndex);
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return new BitmapDecoder (pixels, anarc.ImageInfo);
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}
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internal static byte[] DecompressRLE (IBinaryStream input, uint unpacked_size, int rle_step)
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{
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var output = new byte[unpacked_size];
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for (int i = 0; i < rle_step; ++i)
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{
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byte v1 = input.ReadUInt8();
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output[i] = v1;
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int dst = i + rle_step;
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while (dst < output.Length)
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{
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byte v2 = input.ReadUInt8();
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output[dst] = v2;
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dst += rle_step;
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if (v2 == v1)
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{
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int count = input.ReadUInt8();
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if (0 != (count & 0x80))
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count = input.ReadUInt8() + ((count & 0x7F) << 8) + 128;
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while (count --> 0 && dst < output.Length)
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{
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output[dst] = v2;
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dst += rle_step;
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}
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if (dst < output.Length)
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{
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v2 = input.ReadUInt8();
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output[dst] = v2;
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dst += rle_step;
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}
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}
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v1 = v2;
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}
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}
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return output;
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}
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}
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class An21Archive : AnmArchive
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{
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byte[][] Frames;
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public An21Archive (ArcView arc, ArchiveFormat impl, ICollection<Entry> dir, ImageMetaData base_info)
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: base (arc, impl, dir, base_info)
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{
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Frames = new byte[dir.Count][];
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}
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public byte[] GetFrame (int index)
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{
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if (index >= Frames.Length)
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throw new ArgumentException ("index");
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if (null != Frames[index])
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return Frames[index];
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var entry = Dir.ElementAt (index);
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byte[] pixels;
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using (var stream = OpenEntry (entry))
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{
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pixels = new byte[stream.Length];
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stream.Read (pixels, 0, pixels.Length);
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}
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if (index > 0)
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{
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var prev_frame = GetFrame (index-1);
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for (int i = 0; i < pixels.Length; ++i)
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pixels[i] += prev_frame[i];
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}
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Frames[index] = pixels;
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return pixels;
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}
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}
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class BitmapDecoder : 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 BitmapDecoder (byte[] pixels, ImageMetaData info)
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{
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Info = info;
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int stride = (int)info.Width * info.BPP / 8;
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Image = ImageData.CreateFlipped (info, GetFormat(), null, pixels, stride);
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}
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PixelFormat GetFormat ()
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{
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switch (Info.BPP)
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{
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case 8: return PixelFormats.Gray8;
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case 24: return PixelFormats.Bgr24;
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case 32: return PixelFormats.Bgra32;
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default: throw new InvalidFormatException();
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}
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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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