mirror of
https://github.com/aaru-dps/Aaru.git
synced 2025-12-16 19:24:25 +00:00
Refactor image classes and split them to smaller files.
This commit is contained in:
@@ -0,0 +1,296 @@
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// /***************************************************************************
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// The Disc Image Chef
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// ----------------------------------------------------------------------------
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//
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// Filename : ClauniaSubchannelTransform.cs
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// Author(s) : Natalia Portillo <claunia@claunia.com>
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//
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// Component : Disk image plugins.
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//
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// --[ Description ] ----------------------------------------------------------
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//
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// Contains the Claunia Subchannel Transform algorithm.
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//
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// --[ License ] --------------------------------------------------------------
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//
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// This library is free software; you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as
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// published by the Free Software Foundation; either version 2.1 of the
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// License, or (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful, but
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// WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public
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// License along with this library; if not, see <http://www.gnu.org/licenses/>.
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//
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// ----------------------------------------------------------------------------
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// Copyright © 2011-2018 Natalia Portillo
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// ****************************************************************************/
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using System;
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using DiscImageChef.Console;
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namespace DiscImageChef.DiscImages
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{
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public partial class DiscImageChef
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{
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static byte[] ClauniaSubchannelTransform(byte[] interleaved)
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{
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if(interleaved == null) return null;
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int[] p = new int[interleaved.Length / 8];
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int[] q = new int[interleaved.Length / 8];
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int[] r = new int[interleaved.Length / 8];
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int[] s = new int[interleaved.Length / 8];
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int[] t = new int[interleaved.Length / 8];
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int[] u = new int[interleaved.Length / 8];
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int[] v = new int[interleaved.Length / 8];
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int[] w = new int[interleaved.Length / 8];
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DateTime start = DateTime.UtcNow;
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for(int i = 0; i < interleaved.Length; i += 8)
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{
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p[i / 8] = interleaved[i] & 0x80;
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p[i / 8] += (interleaved[i + 1] & 0x80) >> 1;
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p[i / 8] += (interleaved[i + 2] & 0x80) >> 2;
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p[i / 8] += (interleaved[i + 3] & 0x80) >> 3;
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p[i / 8] += (interleaved[i + 4] & 0x80) >> 4;
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p[i / 8] += (interleaved[i + 5] & 0x80) >> 5;
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p[i / 8] += (interleaved[i + 6] & 0x80) >> 6;
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p[i / 8] += (interleaved[i + 7] & 0x80) >> 7;
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q[i / 8] = (interleaved[i] & 0x40) << 1;
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q[i / 8] += interleaved[i + 1] & 0x40;
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q[i / 8] += (interleaved[i + 2] & 0x40) >> 1;
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q[i / 8] += (interleaved[i + 3] & 0x40) >> 2;
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q[i / 8] += (interleaved[i + 4] & 0x40) >> 3;
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q[i / 8] += (interleaved[i + 5] & 0x40) >> 4;
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q[i / 8] += (interleaved[i + 6] & 0x40) >> 5;
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q[i / 8] += (interleaved[i + 7] & 0x40) >> 6;
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r[i / 8] = (interleaved[i] & 0x20) << 2;
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r[i / 8] += (interleaved[i + 1] & 0x20) << 1;
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r[i / 8] += interleaved[i + 2] & 0x20;
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r[i / 8] += (interleaved[i + 3] & 0x20) >> 1;
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r[i / 8] += (interleaved[i + 4] & 0x20) >> 2;
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r[i / 8] += (interleaved[i + 5] & 0x20) >> 3;
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r[i / 8] += (interleaved[i + 6] & 0x20) >> 4;
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r[i / 8] += (interleaved[i + 7] & 0x20) >> 5;
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s[i / 8] = (interleaved[i] & 0x10) << 3;
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s[i / 8] += (interleaved[i + 1] & 0x10) << 2;
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s[i / 8] += (interleaved[i + 2] & 0x10) << 1;
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s[i / 8] += interleaved[i + 3] & 0x10;
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s[i / 8] += (interleaved[i + 4] & 0x10) >> 1;
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s[i / 8] += (interleaved[i + 5] & 0x10) >> 2;
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s[i / 8] += (interleaved[i + 6] & 0x10) >> 3;
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s[i / 8] += (interleaved[i + 7] & 0x10) >> 4;
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t[i / 8] = (interleaved[i] & 0x08) << 4;
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t[i / 8] += (interleaved[i + 1] & 0x08) << 3;
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t[i / 8] += (interleaved[i + 2] & 0x08) << 2;
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t[i / 8] += (interleaved[i + 3] & 0x08) << 1;
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t[i / 8] += interleaved[i + 4] & 0x08;
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t[i / 8] += (interleaved[i + 5] & 0x08) >> 1;
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t[i / 8] += (interleaved[i + 6] & 0x08) >> 2;
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t[i / 8] += (interleaved[i + 7] & 0x08) >> 3;
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u[i / 8] = (interleaved[i] & 0x04) << 5;
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u[i / 8] += (interleaved[i + 1] & 0x04) << 4;
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u[i / 8] += (interleaved[i + 2] & 0x04) << 3;
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u[i / 8] += (interleaved[i + 3] & 0x04) << 2;
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u[i / 8] += (interleaved[i + 4] & 0x04) << 1;
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u[i / 8] += interleaved[i + 5] & 0x04;
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u[i / 8] += (interleaved[i + 6] & 0x04) >> 1;
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u[i / 8] += (interleaved[i + 7] & 0x04) >> 2;
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v[i / 8] = (interleaved[i] & 0x02) << 6;
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v[i / 8] += (interleaved[i + 1] & 0x02) << 5;
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v[i / 8] += (interleaved[i + 2] & 0x02) << 4;
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v[i / 8] += (interleaved[i + 3] & 0x02) << 3;
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v[i / 8] += (interleaved[i + 4] & 0x02) << 2;
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v[i / 8] += (interleaved[i + 5] & 0x02) << 1;
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v[i / 8] += interleaved[i + 6] & 0x02;
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v[i / 8] += (interleaved[i + 7] & 0x02) >> 1;
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w[i / 8] = (interleaved[i] & 0x01) << 7;
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w[i / 8] += (interleaved[i + 1] & 0x01) << 6;
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w[i / 8] += (interleaved[i + 2] & 0x01) << 5;
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w[i / 8] += (interleaved[i + 3] & 0x01) << 4;
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w[i / 8] += (interleaved[i + 4] & 0x01) << 3;
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w[i / 8] += (interleaved[i + 5] & 0x01) << 2;
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w[i / 8] += (interleaved[i + 6] & 0x01) << 1;
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w[i / 8] += interleaved[i + 7] & 0x01;
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}
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DateTime end = DateTime.UtcNow;
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TimeSpan deinterleave = end - start;
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byte[] sequential = new byte[interleaved.Length];
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start = DateTime.UtcNow;
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int qStart = p.Length * 1;
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int rStart = p.Length * 2;
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int sStart = p.Length * 3;
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int tStart = p.Length * 4;
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int uStart = p.Length * 5;
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int vStart = p.Length * 6;
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int wStart = p.Length * 7;
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for(int i = 0; i < p.Length; i++)
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{
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sequential[i] = (byte)p[i];
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sequential[qStart + i] = (byte)q[i];
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sequential[rStart + i] = (byte)r[i];
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sequential[sStart + i] = (byte)s[i];
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sequential[tStart + i] = (byte)t[i];
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sequential[uStart + i] = (byte)u[i];
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sequential[vStart + i] = (byte)v[i];
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sequential[wStart + i] = (byte)w[i];
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}
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end = DateTime.UtcNow;
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TimeSpan sequentialize = end - start;
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DicConsole.DebugWriteLine("DiscImageChef format plugin", "Took {0}ms to deinterleave subchannel.",
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deinterleave.TotalMilliseconds);
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DicConsole.DebugWriteLine("DiscImageChef format plugin", "Took {0}ms to sequentialize subchannel.",
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sequentialize.TotalMilliseconds);
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DicConsole.DebugWriteLine("DiscImageChef format plugin", "Took {0}ms to transform subchannel.",
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deinterleave.TotalMilliseconds + sequentialize.TotalMilliseconds);
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return sequential;
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}
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static byte[] ClauniaSubchannelUntransform(byte[] sequential)
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{
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if(sequential == null) return null;
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int[] p = new int[sequential.Length / 8];
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int[] q = new int[sequential.Length / 8];
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int[] r = new int[sequential.Length / 8];
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int[] s = new int[sequential.Length / 8];
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int[] t = new int[sequential.Length / 8];
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int[] u = new int[sequential.Length / 8];
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int[] v = new int[sequential.Length / 8];
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int[] w = new int[sequential.Length / 8];
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int qStart = p.Length * 1;
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int rStart = p.Length * 2;
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int sStart = p.Length * 3;
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int tStart = p.Length * 4;
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int uStart = p.Length * 5;
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int vStart = p.Length * 6;
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int wStart = p.Length * 7;
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DateTime start = DateTime.UtcNow;
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for(int i = 0; i < p.Length; i++)
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{
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p[i] = sequential[i];
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q[i] = sequential[qStart + i];
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r[i] = sequential[rStart + i];
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s[i] = sequential[sStart + i];
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t[i] = sequential[tStart + i];
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u[i] = sequential[uStart + i];
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v[i] = sequential[vStart + i];
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w[i] = sequential[wStart + i];
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}
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DateTime end = DateTime.UtcNow;
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TimeSpan desequentialize = end - start;
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byte[] interleaved = new byte[sequential.Length];
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start = DateTime.UtcNow;
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for(int i = 0; i < interleaved.Length; i += 8)
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{
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interleaved[i] = (byte)((p[i / 8] & 0x80) == 0x80 ? 0x80 : 0);
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interleaved[i + 1] += (byte)((p[i / 8] & 0x40) == 0x40 ? 0x80 : 0);
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interleaved[i + 2] += (byte)((p[i / 8] & 0x20) == 0x20 ? 0x80 : 0);
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interleaved[i + 3] += (byte)((p[i / 8] & 0x10) == 0x10 ? 0x80 : 0);
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interleaved[i + 4] += (byte)((p[i / 8] & 0x08) == 0x08 ? 0x80 : 0);
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interleaved[i + 5] += (byte)((p[i / 8] & 0x04) == 0x04 ? 0x80 : 0);
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interleaved[i + 6] += (byte)((p[i / 8] & 0x02) == 0x02 ? 0x80 : 0);
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interleaved[i + 7] += (byte)((p[i / 8] & 0x01) == 0x01 ? 0x80 : 0);
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interleaved[i] += (byte)((q[i / 8] & 0x80) == 0x80 ? 0x40 : 0);
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interleaved[i + 1] += (byte)((q[i / 8] & 0x40) == 0x40 ? 0x40 : 0);
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interleaved[i + 2] += (byte)((q[i / 8] & 0x20) == 0x20 ? 0x40 : 0);
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interleaved[i + 3] += (byte)((q[i / 8] & 0x10) == 0x10 ? 0x40 : 0);
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interleaved[i + 4] += (byte)((q[i / 8] & 0x08) == 0x08 ? 0x40 : 0);
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interleaved[i + 5] += (byte)((q[i / 8] & 0x04) == 0x04 ? 0x40 : 0);
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interleaved[i + 6] += (byte)((q[i / 8] & 0x02) == 0x02 ? 0x40 : 0);
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interleaved[i + 7] += (byte)((q[i / 8] & 0x01) == 0x01 ? 0x40 : 0);
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interleaved[i] += (byte)((r[i / 8] & 0x80) == 0x80 ? 0x20 : 0);
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interleaved[i + 1] += (byte)((r[i / 8] & 0x40) == 0x40 ? 0x20 : 0);
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interleaved[i + 2] += (byte)((r[i / 8] & 0x20) == 0x20 ? 0x20 : 0);
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interleaved[i + 3] += (byte)((r[i / 8] & 0x10) == 0x10 ? 0x20 : 0);
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interleaved[i + 4] += (byte)((r[i / 8] & 0x08) == 0x08 ? 0x20 : 0);
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interleaved[i + 5] += (byte)((r[i / 8] & 0x04) == 0x04 ? 0x20 : 0);
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interleaved[i + 6] += (byte)((r[i / 8] & 0x02) == 0x02 ? 0x20 : 0);
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interleaved[i + 7] += (byte)((r[i / 8] & 0x01) == 0x01 ? 0x20 : 0);
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interleaved[i] += (byte)((s[i / 8] & 0x80) == 0x80 ? 0x10 : 0);
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interleaved[i + 1] += (byte)((s[i / 8] & 0x40) == 0x40 ? 0x10 : 0);
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interleaved[i + 2] += (byte)((s[i / 8] & 0x20) == 0x20 ? 0x10 : 0);
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interleaved[i + 3] += (byte)((s[i / 8] & 0x10) == 0x10 ? 0x10 : 0);
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interleaved[i + 4] += (byte)((s[i / 8] & 0x08) == 0x08 ? 0x10 : 0);
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interleaved[i + 5] += (byte)((s[i / 8] & 0x04) == 0x04 ? 0x10 : 0);
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interleaved[i + 6] += (byte)((s[i / 8] & 0x02) == 0x02 ? 0x10 : 0);
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interleaved[i + 7] += (byte)((s[i / 8] & 0x01) == 0x01 ? 0x10 : 0);
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interleaved[i] += (byte)((t[i / 8] & 0x80) == 0x80 ? 0x08 : 0);
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interleaved[i + 1] += (byte)((t[i / 8] & 0x40) == 0x40 ? 0x08 : 0);
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interleaved[i + 2] += (byte)((t[i / 8] & 0x20) == 0x20 ? 0x08 : 0);
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interleaved[i + 3] += (byte)((t[i / 8] & 0x10) == 0x10 ? 0x08 : 0);
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interleaved[i + 4] += (byte)((t[i / 8] & 0x08) == 0x08 ? 0x08 : 0);
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interleaved[i + 5] += (byte)((t[i / 8] & 0x04) == 0x04 ? 0x08 : 0);
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interleaved[i + 6] += (byte)((t[i / 8] & 0x02) == 0x02 ? 0x08 : 0);
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interleaved[i + 7] += (byte)((t[i / 8] & 0x01) == 0x01 ? 0x08 : 0);
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interleaved[i] += (byte)((u[i / 8] & 0x80) == 0x80 ? 0x04 : 0);
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interleaved[i + 1] += (byte)((u[i / 8] & 0x40) == 0x40 ? 0x04 : 0);
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interleaved[i + 2] += (byte)((u[i / 8] & 0x20) == 0x20 ? 0x04 : 0);
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interleaved[i + 3] += (byte)((u[i / 8] & 0x10) == 0x10 ? 0x04 : 0);
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interleaved[i + 4] += (byte)((u[i / 8] & 0x08) == 0x08 ? 0x04 : 0);
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interleaved[i + 5] += (byte)((u[i / 8] & 0x04) == 0x04 ? 0x04 : 0);
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interleaved[i + 6] += (byte)((u[i / 8] & 0x02) == 0x02 ? 0x04 : 0);
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interleaved[i + 7] += (byte)((u[i / 8] & 0x01) == 0x01 ? 0x04 : 0);
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interleaved[i] += (byte)((v[i / 8] & 0x80) == 0x80 ? 0x02 : 0);
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interleaved[i + 1] += (byte)((v[i / 8] & 0x40) == 0x40 ? 0x02 : 0);
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interleaved[i + 2] += (byte)((v[i / 8] & 0x20) == 0x20 ? 0x02 : 0);
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interleaved[i + 3] += (byte)((v[i / 8] & 0x10) == 0x10 ? 0x02 : 0);
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interleaved[i + 4] += (byte)((v[i / 8] & 0x08) == 0x08 ? 0x02 : 0);
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interleaved[i + 5] += (byte)((v[i / 8] & 0x04) == 0x04 ? 0x02 : 0);
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interleaved[i + 6] += (byte)((v[i / 8] & 0x02) == 0x02 ? 0x02 : 0);
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interleaved[i + 7] += (byte)((v[i / 8] & 0x01) == 0x01 ? 0x02 : 0);
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interleaved[i] += (byte)((w[i / 8] & 0x80) == 0x80 ? 0x01 : 0);
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interleaved[i + 1] += (byte)((w[i / 8] & 0x40) == 0x40 ? 0x01 : 0);
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interleaved[i + 2] += (byte)((w[i / 8] & 0x20) == 0x20 ? 0x01 : 0);
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interleaved[i + 3] += (byte)((w[i / 8] & 0x10) == 0x10 ? 0x01 : 0);
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interleaved[i + 4] += (byte)((w[i / 8] & 0x08) == 0x08 ? 0x01 : 0);
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interleaved[i + 5] += (byte)((w[i / 8] & 0x04) == 0x04 ? 0x01 : 0);
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interleaved[i + 6] += (byte)((w[i / 8] & 0x02) == 0x02 ? 0x01 : 0);
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interleaved[i + 7] += (byte)((w[i / 8] & 0x01) == 0x01 ? 0x01 : 0);
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}
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end = DateTime.UtcNow;
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TimeSpan interleave = end - start;
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DicConsole.DebugWriteLine("DiscImageChef format plugin", "Took {0}ms to de-sequentialize subchannel.",
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desequentialize.TotalMilliseconds);
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DicConsole.DebugWriteLine("DiscImageChef format plugin", "Took {0}ms to interleave subchannel.",
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interleave.TotalMilliseconds);
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DicConsole.DebugWriteLine("DiscImageChef format plugin", "Took {0}ms to untransform subchannel.",
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interleave.TotalMilliseconds + desequentialize.TotalMilliseconds);
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return interleaved;
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}
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}
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}
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