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(WipFormat.Reader): cleanup.
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7133aa5ea8
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@ -92,9 +92,7 @@ namespace GameRes.Formats.Will
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public override ImageData Read (Stream file, ImageMetaData info)
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{
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var meta = info as WipMetaData;
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if (null == meta)
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throw new ArgumentException ("WipFormat.Read should be supplied with WipMetaData", "info");
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var meta = (WipMetaData)info;
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file.Position = 8 + 24 * meta.FrameCount;
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Color[] palette = null;
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if (8 == meta.BPP)
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@ -149,51 +147,47 @@ namespace GameRes.Formats.Will
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// int stride = (int)info.Width*((info.BPP+7)/8);
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int stride = (int)info.Width*4;
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m_data = new byte[stride * (int)info.Height];
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m_input = new BinaryReader (file, Encoding.ASCII, true);
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m_input = new ArcView.Reader (file);
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}
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private byte[] m_window = new byte[0x1000];
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public void Unpack ()
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{
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int current = 0;
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int dst = 0;
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int window_index = 1;
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int control = 0;
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byte input = 0;
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for (uint length = m_length; length > 0; )
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for (int length = (int)m_length; length > 0; )
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{
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control >>= 1;
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if (0 == (control & 0x100))
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{
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input = m_input.ReadByte();
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control = m_input.ReadByte() | 0xFF00;
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--length;
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control = input | 0xff00;
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}
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if (0 != (control & 1))
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{
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if (length < 1)
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throw new InvalidFormatException();
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input = m_input.ReadByte();
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byte b = m_input.ReadByte();
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--length;
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m_data[current++] = input;
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m_window[window_index++] = input;
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m_data[dst++] = b;
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m_window[window_index++] = b;
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window_index &= 0xfff;
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}
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else
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{
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if (length < 2)
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throw new InvalidFormatException();
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int di = m_input.ReadByte();
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input = m_input.ReadByte();
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int hi = m_input.ReadByte();
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int lo = m_input.ReadByte();
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length -= 2;
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int offset = ((di << 8) | input) >> 4;
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int count = (input & 0xf) + 2;
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for (int i = 0; i < count; ++i)
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int offset = hi << 4 | lo >> 4;
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for (int count = (lo & 0xF) + 2; count > 0; --count)
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{
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int src = (i + offset) & 0xfff;
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input = m_window[src];
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m_data[current++] = input;
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m_window[window_index++] = input;
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byte b = m_window[offset++ & 0xfff];
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m_data[dst++] = b;
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m_window[window_index++] = b;
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window_index &= 0xfff;
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}
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}
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