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(CmFormat): implemented 8bpp images with alpha-channel.
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morkt
parent
a73471c0b5
commit
f11dae97ab
@ -2,7 +2,7 @@
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//! \date Sun May 03 10:26:35 2015
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//! \brief MAI image formats implementation.
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//
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// Copyright (C) 2015 by morkt
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// Copyright (C) 2015-2016 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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@ -33,7 +33,7 @@ using GameRes.Utility;
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namespace GameRes.Formats.MAI
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{
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internal class CmpMetaData : ImageMetaData
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internal class CmMetaData : ImageMetaData
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{
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public int Colors;
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public bool IsCompressed;
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@ -42,20 +42,20 @@ namespace GameRes.Formats.MAI
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}
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[Export(typeof(ImageFormat))]
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public class CmpFormat : ImageFormat
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public class CmFormat : ImageFormat
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{
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public override string Tag { get { return "CMP/MAI"; } }
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public override string Tag { get { return "CM/MAI"; } }
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public override string Description { get { return "MAI image format"; } }
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public override uint Signature { get { return 0; } }
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public CmpFormat ()
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public CmFormat ()
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{
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Extensions = new string[] { "cmp" };
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Extensions = new string[] { "cm" };
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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 NotImplementedException ("CmpFormat.Write not implemented");
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throw new NotImplementedException ("CmFormat.Write not implemented");
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}
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public override ImageMetaData ReadMetaData (Stream stream)
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@ -70,7 +70,7 @@ namespace GameRes.Formats.MAI
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uint size = LittleEndian.ToUInt32 (header, 0);
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if (size != stream.Length)
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return null;
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var info = new CmpMetaData();
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var info = new CmMetaData();
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info.Width = LittleEndian.ToUInt16 (header, 4);
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info.Height = LittleEndian.ToUInt16 (header, 6);
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info.Colors = LittleEndian.ToUInt16 (header, 8);
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@ -85,11 +85,7 @@ namespace GameRes.Formats.MAI
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public override ImageData Read (Stream stream, ImageMetaData info)
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{
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var meta = info as CmpMetaData;
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if (null == meta)
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throw new ArgumentException ("CmpFormat.Read should be supplied with CmpMetaData", "info");
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var reader = new Reader (stream, meta);
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var reader = new Reader (stream, (CmMetaData)info);
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reader.Unpack();
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return ImageData.CreateFlipped (info, reader.Format, reader.Palette, reader.Data, reader.Stride);
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}
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@ -109,7 +105,7 @@ namespace GameRes.Formats.MAI
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public byte[] Data { get { return m_pixels; } }
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public int Stride { get { return m_width * m_pixel_size; } }
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public Reader (Stream stream, CmpMetaData info)
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public Reader (Stream stream, CmMetaData info)
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{
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m_input = stream;
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m_width = (int)info.Width;
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@ -124,9 +120,12 @@ namespace GameRes.Formats.MAI
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case 4: Format = PixelFormats.Bgr32; break;
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default: throw new InvalidFormatException ("Invalid color depth");
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}
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m_input.Position = info.DataOffset;
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if (info.Colors > 0)
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{
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m_input.Position = 0x20;
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Palette = RleDecoder.ReadPalette (m_input, info.Colors, 3);
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}
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m_input.Position = info.DataOffset;
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int size = info.IsCompressed ? m_width*m_height*m_pixel_size : (int)info.DataLength;
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m_pixels = new byte[size];
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}
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@ -141,7 +140,7 @@ namespace GameRes.Formats.MAI
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}
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}
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internal class AmiMetaData : CmpMetaData
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internal class AmiMetaData : CmMetaData
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{
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public uint MaskWidth;
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public uint MaskHeight;
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@ -200,11 +199,7 @@ namespace GameRes.Formats.MAI
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public override ImageData Read (Stream stream, ImageMetaData info)
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{
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var meta = info as AmiMetaData;
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if (null == meta)
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throw new ArgumentException ("AmiFormat.Read should be supplied with AmiMetaData", "info");
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var reader = new Reader (stream, meta);
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var reader = new Reader (stream, (AmiMetaData)info);
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reader.Unpack();
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return ImageData.Create (info, reader.Format, reader.Palette, reader.Data);
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}
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@ -231,7 +226,7 @@ namespace GameRes.Formats.MAI
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m_width = (int)info.Width;
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m_height = (int)info.Height;
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m_pixel_size = info.BPP/8;
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if (m_pixel_size != 3 && m_pixel_size != 4)
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if (m_pixel_size != 3 && m_pixel_size != 4 && m_pixel_size != 1)
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throw new InvalidFormatException ("Invalid color depth");
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Format = PixelFormats.Bgra32;
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int size = info.IsCompressed ? m_width*m_height*m_pixel_size : (int)info.DataLength;
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@ -256,17 +251,32 @@ namespace GameRes.Formats.MAI
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else
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m_input.Read (m_alpha, 0, m_alpha.Length);
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int stride = m_width * m_pixel_size;
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Action<int, int, byte> copy_pixel;
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if (m_pixel_size > 1)
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copy_pixel = (src, dst, alpha) => {
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m_pixels[dst] = m_output[src];
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m_pixels[dst+1] = m_output[src+1];
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m_pixels[dst+2] = m_output[src+2];
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m_pixels[dst+3] = alpha;
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};
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else
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copy_pixel = (src, dst, alpha) => {
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var color = Palette.Colors[m_output[src]];
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m_pixels[dst] = color.B;
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m_pixels[dst+1] = color.G;
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m_pixels[dst+2] = color.R;
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m_pixels[dst+3] = alpha;
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};
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int src_stride = m_width * m_pixel_size;
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for (int y = 0; y < m_height; ++y)
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{
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int dst_line = y*m_width;
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int src_line = (m_height-1-y)*m_width;
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int dst_line = y*m_width*4;
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int src_line = (m_height-1-y)*src_stride;;
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for (int x = 0; x < m_width; ++x)
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{
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m_pixels[(dst_line+x)*4] = m_output[(src_line+x)*m_pixel_size];
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m_pixels[(dst_line+x)*4+1] = m_output[(src_line+x)*m_pixel_size+1];
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m_pixels[(dst_line+x)*4+2] = m_output[(src_line+x)*m_pixel_size+2];
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m_pixels[(dst_line+x)*4+3] = m_alpha[dst_line+x];
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copy_pixel (src_line, dst_line, m_alpha[y*m_width+x]);
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src_line += m_pixel_size;
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dst_line += 4;
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}
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}
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}
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@ -287,7 +297,7 @@ namespace GameRes.Formats.MAI
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public override void Write (Stream file, ImageData image)
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{
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throw new NotImplementedException ("AmiFormat.Write not implemented");
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throw new NotImplementedException ("MaskFormat.Write not implemented");
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}
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public override ImageMetaData ReadMetaData (Stream stream)
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@ -299,23 +309,33 @@ namespace GameRes.Formats.MAI
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return null;
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uint width = input.ReadUInt32();
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uint height = input.ReadUInt32();
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if ((width*height + 0x410) != size)
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int compressed = input.ReadInt32();
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if (compressed > 1 || 0 == compressed && (width*height + 0x410) != size)
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return null;
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return new ImageMetaData {
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return new CmMetaData {
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Width = width,
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Height = height,
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BPP = 8
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BPP = 8,
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IsCompressed = 1 == compressed,
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DataOffset = 0x10,
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DataLength = size,
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};
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}
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}
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public override ImageData Read (Stream stream, ImageMetaData info)
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{
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stream.Position = 0x10;
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var meta = (CmMetaData)info;
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stream.Position = meta.DataOffset;
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var palette = RleDecoder.ReadPalette (stream, 0x100, 4);
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byte[] pixels = new byte[info.Width*info.Height];
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if (pixels.Length != stream.Read (pixels, 0, pixels.Length))
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var pixels = new byte[info.Width*info.Height];
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if (meta.IsCompressed)
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{
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int packed_size = (int)(stream.Length - meta.DataOffset);
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RleDecoder.Unpack (stream, packed_size, pixels, 1);
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}
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else if (pixels.Length != stream.Read (pixels, 0, pixels.Length))
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throw new InvalidFormatException();
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return ImageData.Create (info, PixelFormats.Indexed8, palette, pixels);
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