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(BET): recognize non-compressed images.
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parent
31e420c094
commit
913d6e6817
@ -23,6 +23,7 @@
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// IN THE SOFTWARE.
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// IN THE SOFTWARE.
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//
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//
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using System;
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using System.ComponentModel.Composition;
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using System.ComponentModel.Composition;
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using System.IO;
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using System.IO;
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using System.Windows.Media;
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using System.Windows.Media;
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@ -35,53 +36,36 @@ namespace GameRes.Formats.System21
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public class BetFormat : ImageFormat
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public class BetFormat : ImageFormat
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{
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{
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public override string Tag { get { return "BET"; } }
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public override string Tag { get { return "BET"; } }
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public override string Description { get { return "System21 compressed image format"; } }
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public override string Description { get { return "System21 image format"; } }
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public override uint Signature { get { return 0x44445A53; } } // 'SZDD'
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public override uint Signature { get { return 0; } }
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public override ImageMetaData ReadMetaData (IBinaryStream file)
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public override ImageMetaData ReadMetaData (IBinaryStream file)
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{
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{
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if (!file.Name.HasExtension (".bet"))
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if (!file.Name.HasExtension (".bet"))
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return null;
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return null;
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using (var lz = OpenLzStream (file.AsStream))
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uint w = file.ReadUInt32();
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using (var input = new BinaryStream (lz, file.Name))
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uint h = file.ReadUInt32();
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{
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int bpp = file.ReadUInt16();
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uint w = input.ReadUInt32();
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if ((bpp != 24 && bpp != 8) || 0 == w || w > 0x8000 || 0 == h || h > 0x8000)
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uint h = input.ReadUInt32();
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return null;
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int bpp = input.ReadUInt16();
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return new ImageMetaData { Width = w, Height = h, BPP = bpp };
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if ((bpp != 24 && bpp != 8) || 0 == w || w > 0x8000 || 0 == h || h > 0x8000)
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return null;
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return new ImageMetaData { Width = w, Height = h, BPP = bpp };
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}
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}
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}
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public override ImageData Read (IBinaryStream file, ImageMetaData info)
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public override ImageData Read (IBinaryStream input, ImageMetaData info)
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{
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{
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using (var input = OpenLzStream (file.AsStream))
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int stride = (int)info.Width * info.BPP / 8;
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{
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int bitmap_length = stride * (int)info.Height;
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int stride = (int)info.Width * info.BPP / 8;
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var pixels = new byte[Math.Max (bitmap_length, 10)];
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var pixels = new byte[stride * (int)info.Height];
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input.Read (pixels, 0, 10); // input might be non-seekable
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for (int i = 0; i < 10; ++i)
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BitmapPalette palette = null;
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input.ReadByte();
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if (8 == info.BPP)
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BitmapPalette palette = null;
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palette = ReadPalette (input.AsStream);
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if (8 == info.BPP)
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if (input.Read (pixels, 0, bitmap_length) != bitmap_length)
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palette = ReadPalette (input);
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throw new InvalidFormatException();
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if (input.Read (pixels, 0, pixels.Length) != pixels.Length)
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for (int i = 0; i < bitmap_length; ++i)
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throw new InvalidFormatException();
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pixels[i] ^= 0xFF;
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for (int i = 0; i < pixels.Length; ++i)
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PixelFormat format = 8 == info.BPP ? PixelFormats.Indexed8 : PixelFormats.Bgr24;
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pixels[i] ^= 0xFF;
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return ImageData.CreateFlipped (info, format, palette, pixels, stride);
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PixelFormat format = 8 == info.BPP ? PixelFormats.Indexed8 : PixelFormats.Bgr24;
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return ImageData.CreateFlipped (info, format, palette, pixels, stride);
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}
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}
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Stream OpenLzStream (Stream input)
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{
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input.Position = 0xE;
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var lz = new LzssStream (input, LzssMode.Decompress, true);
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lz.Config.FrameSize = 0x1000;
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lz.Config.FrameFill = 0x20;
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lz.Config.FrameInitPos = 0x1000 - 0x10;
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return lz;
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}
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}
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public override void Write (Stream file, ImageData image)
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public override void Write (Stream file, ImageData image)
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@ -89,4 +73,42 @@ namespace GameRes.Formats.System21
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throw new System.NotImplementedException ("BetFormat.Write not implemented");
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throw new System.NotImplementedException ("BetFormat.Write not implemented");
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}
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}
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}
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}
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[Export(typeof(ImageFormat))]
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public class LzBetFormat : BetFormat
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{
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public override string Tag { get { return "BET/SZDD"; } }
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public override string Description { get { return "System21 compressed image format"; } }
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public override uint Signature { get { return 0x44445A53; } } // 'SZDD'
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public override bool CanWrite { get { return false; } }
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public override ImageMetaData ReadMetaData (IBinaryStream file)
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{
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if (!file.Name.HasExtension (".bet"))
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return null;
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using (var input = OpenLzStream (file))
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return base.ReadMetaData (input);
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}
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public override ImageData Read (IBinaryStream file, ImageMetaData info)
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{
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using (var input = OpenLzStream (file))
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return base.Read (input, info);
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}
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IBinaryStream OpenLzStream (IBinaryStream input)
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{
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input.Position = 0xE;
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var lz = new LzssStream (input.AsStream, LzssMode.Decompress, true);
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lz.Config.FrameSize = 0x1000;
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lz.Config.FrameFill = 0x20;
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lz.Config.FrameInitPos = 0x1000 - 0x10;
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return new BinaryStream (lz, input.Name); // XXX stream is unseekable
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}
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public override void Write (Stream file, ImageData image)
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{
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throw new System.NotImplementedException ("LzBetFormat.Write not implemented");
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}
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}
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}
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}
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