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(AGF): implemented 4bpp images.
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commit
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@ -53,16 +53,16 @@ namespace GameRes.Formats.Eushully
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public override ImageMetaData ReadMetaData (IBinaryStream stream)
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{
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uint id = stream.Signature;
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if (Signature != id && 0 != id)
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return null;
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var header = new byte[0x20];
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if (0x18 != stream.Read (header, 0, 0x18))
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return null;
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uint id = LittleEndian.ToUInt32 (header, 0);
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if (Signature != id && 0 != id)
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return null;
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int type = LittleEndian.ToInt32 (header, 4);
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if (type != 1 && type != 2)
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return null;
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int unpacked_size = LittleEndian.ToInt32 (header, 0x10);
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int unpacked_size = LittleEndian.ToInt32 (header, 0xC);
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int packed_size = LittleEndian.ToInt32 (header, 0x14);
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using (var unpacked = AgfReader.OpenSection (stream.AsStream, unpacked_size, packed_size))
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using (var reader = new BinaryReader (unpacked))
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@ -79,7 +79,7 @@ namespace GameRes.Formats.Eushully
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};
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if (0 == info.SourceBPP)
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return null;
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if (8 == info.SourceBPP)
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if (info.SourceBPP <= 8)
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{
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reader.Read (header, 0, 0x18); // skip rest of the header
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info.Palette = ReadColorMap (reader.BaseStream);
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@ -156,17 +156,19 @@ namespace GameRes.Formats.Eushully
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m_bpp = 24;
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}
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Format = 32 == m_bpp ? PixelFormats.Bgra32 : PixelFormats.Bgr24;
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int src_pixel_size = m_source_bpp / 8;
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int src_pixel_size = m_source_bpp / 8; // not used for 4bpp bitmaps
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int dst_pixel_size = m_bpp / 8;
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int src_stride = (m_width * src_pixel_size + 3) & ~3;
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int src_stride = (m_width * m_source_bpp / 8 + 3) & ~3;
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int dst_stride = m_width * dst_pixel_size;
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int src_row = (m_height - 1) * src_stride;
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int dst_row = 0;
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int src_alpha = 0;
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RowUnpacker repack_row = RepackRowTrue;
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if (1 == src_pixel_size)
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if (8 == m_source_bpp)
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repack_row = RepackRow8;
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else if (4 == m_source_bpp)
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repack_row = RepackRow4;
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while (src_row >= 0)
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{
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repack_row (bmp_data, src_row, src_pixel_size, dst_row, dst_pixel_size, alpha, src_alpha);
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@ -178,6 +180,27 @@ namespace GameRes.Formats.Eushully
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delegate void RowUnpacker (byte[] bmp, int src, int src_pixel_size, int dst, int dst_pixel_size, byte[] alpha, int src_alpha);
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void RepackRow4 (byte[] bmp, int src, int src_pixel_size, int dst, int dst_pixel_size, byte[] alpha, int src_alpha)
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{
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for (int x = 0; x < m_width; )
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{
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byte px = bmp[src++];
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for (int j = 0; j < 2; ++j)
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{
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var color = m_palette[(px >> 4) & 0xF];
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m_output[dst] = color.B;
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m_output[dst+1] = color.G;
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m_output[dst+2] = color.R;
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if (null != alpha)
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m_output[dst+3] = alpha[src_alpha++];
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dst += dst_pixel_size;
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if (++x >= m_width)
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break;
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px <<= 4;
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}
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}
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}
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void RepackRow8 (byte[] bmp, int src, int src_pixel_size, int dst, int dst_pixel_size, byte[] alpha, int src_alpha)
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{
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for (int i = 0; i < m_width; ++i)
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