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606b2c76aa46db38841d747f1e1d3c41ddf926a8
SubChannelDecoder/CD_RW_Subchannel.cs

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C#
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Added support for CD+EG, CD+MIDI, CD Line Graphics and CD with user data following red book.
2015-10-02 03:42:00 +01:00
//
Changed filename in header.
2015-10-02 06:01:16 +01:00
// CD_RW_Subchannel.cs
Added support for CD+EG, CD+MIDI, CD Line Graphics and CD with user data following red book.
2015-10-02 03:42:00 +01:00
//
// Author:
// Natalia Portillo <claunia@claunia.com>
//
// Copyright (c) 2015 © Claunia.com
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
//
using System;
namespace SubChannelDecoder
{
public static class CD_RW_Subchannel
{
public struct CD_RW_Packet
{
public byte command;
public byte instruction;
public byte[] parityQ;
public byte[] data;
public byte[] parityP;
}
public enum CD_RW_Commands : byte
{
/// <summary>
/// CD with line graphics
/// </summary>
CD_Line_Graphics = 0x08,
/// <summary>
/// CD+G
/// </summary>
CD_G = 0x09,
/// <summary>
/// CD+EG
/// </summary>
CD_EG = 0x0A,
/// <summary>
/// CD Text
/// </summary>
CD_Text = 0x14,
/// <summary>
/// CD+MIDI
/// </summary>
CD_MIDI = 0x18,
/// <summary>
/// ...
/// </summary>
CD_User = 0x38
}
public enum CD_LG_Instructions : byte
{
CDLG_Write_Font = 4,
CDLG_Scroll_Screen = 12
}
public enum CD_G_Instructions : byte
{
CDG_Memory_Preset = 1,
CDG_Border_Preset = 2,
CDG_Tile_Block = 6,
CDG_Scroll_Preset = 20,
CDG_Scroll_Copy = 24,
CDG_Define_Transparent = 28,
CDG_Load_Color_Table_0_7 = 30,
CDG_Load_Color_Table_8_15 = 31,
CDG_Tile_Block_XOR = 38
}
public enum CD_EG_Instructions : byte
{
CDEG_Memory_Control = 3,
CDEG_Write_Additional_Ground = 6,
CDEG_XOR_Additional_Font = 14,
CDEG_Load_Color_Table_0_7 = 16,
CDEG_Load_Color_Table_8_15,
CDEG_Load_Color_Table_16_23,
CDEG_Load_Color_Table_24_31,
CDEG_Load_Color_Table_32_39,
CDEG_Load_Color_Table_40_47,
CDEG_Load_Color_Table_48_55,
CDEG_Load_Color_Table_56_63,
CDEG_Load_Color_Table_64_71,
CDEG_Load_Color_Table_72_79,
CDEG_Load_Color_Table_80_87,
CDEG_Load_Color_Table_88_95,
CDEG_Load_Color_Table_96_103,
CDEG_Load_Color_Table_104_111,
CDEG_Load_Color_Table_112_119,
CDEG_Load_Color_Table_120_127,
CDEG_Load_Color_Table_128_135,
CDEG_Load_Color_Table_136_143,
CDEG_Load_Color_Table_144_151,
CDEG_Load_Color_Table_152_159,
CDEG_Load_Color_Table_160_167,
CDEG_Load_Color_Table_168_175,
CDEG_Load_Color_Table_176_183,
CDEG_Load_Color_Table_184_191,
CDEG_Load_Color_Table_192_199,
CDEG_Load_Color_Table_200_207,
CDEG_Load_Color_Table_208_215,
CDEG_Load_Color_Table_216_223,
CDEG_Load_Color_Table_224_231,
CDEG_Load_Color_Table_232_239,
CDEG_Load_Color_Table_240_247,
CDEG_Load_Color_Table_248_255,
CDEG_Load_Color_Table_Additional_8_15,
CDEG_Load_Color_Table_Additional_16_23,
CDEG_Load_Color_Table_Additional_24_31,
CDEG_Load_Color_Table_Additional_32_39,
CDEG_Load_Color_Table_Additional_40_47,
CDEG_Load_Color_Table_Additional_48_55,
CDEG_Load_Color_Table_Additional_56_63,
CDEG_Load_Color_Table_Additional_64_71,
CDEG_Load_Color_Table_Additional_72_79,
CDEG_Load_Color_Table_Additional_80_87,
CDEG_Load_Color_Table_Additional_88_95,
CDEG_Load_Color_Table_Additional_96_103,
CDEG_Load_Color_Table_Additional_104_111,
CDEG_Load_Color_Table_Additional_112_119,
CDEG_Load_Color_Table_Additional_120_127,
CDEG_Load_Color_Table_Additional_128_135,
CDEG_Load_Color_Table_Additional_136_143,
CDEG_Load_Color_Table_Additional_144_151,
CDEG_Load_Color_Table_Additional_152_159,
CDEG_Load_Color_Table_Additional_160_167,
CDEG_Load_Color_Table_Additional_168_175,
CDEG_Load_Color_Table_Additional_176_183,
CDEG_Load_Color_Table_Additional_184_191,
CDEG_Load_Color_Table_Additional_192_199,
CDEG_Load_Color_Table_Additional_200_207,
CDEG_Load_Color_Table_Additional_208_215,
CDEG_Load_Color_Table_Additional_216_223,
CDEG_Load_Color_Table_Additional_224_231,
CDEG_Load_Color_Table_Additional_232_239,
CDEG_Load_Color_Table_Additional_240_247,
CDEG_Load_Color_Table_Additional_248_255
}
static readonly int[] offsets = new []
{ 0, 66, 125, 191, 100, 50, 150, 175,
8, 33, 58, 83, 108, 133, 158, 183,
16, 41, 25, 91, 116, 141, 166, 75
};
public static CD_RW_Packet[] Packetize_CD_RW(byte[] subchannels)
{
Console.WriteLine("{0}", subchannels.Length);
CD_RW_Packet[] packets = new CD_RW_Packet[4];
System.IO.MemoryStream ms = new System.IO.MemoryStream();
for (int pack = 0; pack < 4; pack++)
for (int column = 0; column < 24; column++)
ms.WriteByte(subchannels[(pack*24)+offsets[column]]);
ms.Seek(0, System.IO.SeekOrigin.Begin);
byte[] packetized = ms.ToArray();
for (int i = 0; i < 4; i++)
{
packets[i].parityQ = new byte[2];
packets[i].data = new byte[16];
packets[i].parityP = new byte[4];
packets[i].command = (byte)(packetized[0 + i * 24] & 0x3F);
packets[i].instruction = (byte)(packetized[1 + i * 24] & 0x3F);
packets[i].parityQ[0] = (byte)(packetized[2 + i * 24] & 0x3F);
packets[i].parityQ[1] = (byte)(packetized[3 + i * 24] & 0x3F);
packets[i].data[0] = (byte)(packetized[4 + i * 24] & 0x3F);
packets[i].data[1] = (byte)(packetized[5 + i * 24] & 0x3F);
packets[i].data[2] = (byte)(packetized[6 + i * 24] & 0x3F);
packets[i].data[3] = (byte)(packetized[7 + i * 24] & 0x3F);
packets[i].data[4] = (byte)(packetized[8 + i * 24] & 0x3F);
packets[i].data[5] = (byte)(packetized[9 + i * 24] & 0x3F);
packets[i].data[6] = (byte)(packetized[10 + i * 24] & 0x3F);
packets[i].data[7] = (byte)(packetized[11 + i * 24] & 0x3F);
packets[i].data[8] = (byte)(packetized[12 + i * 24] & 0x3F);
packets[i].data[9] = (byte)(packetized[13 + i * 24] & 0x3F);
packets[i].data[10] = (byte)(packetized[14 + i * 24] & 0x3F);
packets[i].data[11] = (byte)(packetized[15 + i * 24] & 0x3F);
packets[i].data[12] = (byte)(packetized[16 + i * 24] & 0x3F);
packets[i].data[13] = (byte)(packetized[17 + i * 24] & 0x3F);
packets[i].data[14] = (byte)(packetized[18 + i * 24] & 0x3F);
packets[i].data[15] = (byte)(packetized[19 + i * 24] & 0x3F);
packets[i].parityP[0] = (byte)(packetized[20 + i * 24] & 0x3F);
packets[i].parityP[1] = (byte)(packetized[21 + i * 24] & 0x3F);
packets[i].parityP[2] = (byte)(packetized[22 + i * 24] & 0x3F);
packets[i].parityP[3] = (byte)(packetized[23 + i * 24] & 0x3F);
}
return packets;
}
public static void Print_CD_RW_Packets(byte[] subchannel)
{
Print_CD_RW_Packets(Packetize_CD_RW(subchannel));
}
public static void Print_CD_RW_Packets(CD_RW_Packet[] packets)
{
for (int i = 0; i < packets.Length; i++)
{
Console.WriteLine("CD RW subchannel Packet {0}", i);
Print_CD_RW_Packet(packets[i]);
}
}
public static void Print_CD_RW_Packet(CD_RW_Packet packet)
{
switch (packet.command)
{
case (byte)CD_RW_Commands.CD_Line_Graphics:
Console.Write("CD Line Graphics: ");
switch (packet.instruction)
{
case (byte)CD_LG_Instructions.CDLG_Scroll_Screen:
Console.WriteLine("Scroll screen.");
break;
case (byte)CD_LG_Instructions.CDLG_Write_Font:
Console.WriteLine("Write font.");
break;
default:
Console.WriteLine("Unknown instruction 0x{0:X2}", packet.instruction);
break;
}
break;
case (byte)CD_RW_Commands.CD_G:
Console.Write("CD+G instruction: ");
switch (packet.instruction)
{
case (byte)CD_G_Instructions.CDG_Border_Preset:
Console.WriteLine("Border preset.");
break;
case (byte)CD_G_Instructions.CDG_Define_Transparent:
Console.WriteLine("Define transparent.");
break;
case (byte)CD_G_Instructions.CDG_Load_Color_Table_0_7:
Console.WriteLine("Load Color Table (0 to 7).");
break;
case (byte)CD_G_Instructions.CDG_Load_Color_Table_8_15:
Console.WriteLine("Load Color Table (8 to 15).");
break;
case (byte)CD_G_Instructions.CDG_Memory_Preset:
Console.WriteLine("Memory preset.");
break;
case (byte)CD_G_Instructions.CDG_Scroll_Copy:
Console.WriteLine("Scroll copy.");
break;
case (byte)CD_G_Instructions.CDG_Scroll_Preset:
Console.WriteLine("Scroll preset.");
break;
case (byte)CD_G_Instructions.CDG_Tile_Block:
Console.WriteLine("Tile block.");
break;
case (byte)CD_G_Instructions.CDG_Tile_Block_XOR:
Console.WriteLine("Tile block. (XOR)");
break;
default:
Console.WriteLine("Unknown instruction 0x{0:X2}", packet.instruction);
break;
}
break;
case (byte)CD_RW_Commands.CD_EG:
Console.Write("CD+G instruction: ");
switch (packet.instruction)
{
case (byte)CD_EG_Instructions.CDEG_Memory_Control:
Console.WriteLine("Memory control.");
break;
case (byte)CD_EG_Instructions.CDEG_Write_Additional_Ground:
Console.WriteLine("Write additional font foreground/background.");
break;
case (byte)CD_EG_Instructions.CDEG_XOR_Additional_Font:
Console.WriteLine("XOR additional font.");
break;
case (byte)CD_EG_Instructions.CDEG_Load_Color_Table_0_7:
case (byte)CD_EG_Instructions.CDEG_Load_Color_Table_8_15:
case (byte)CD_EG_Instructions.CDEG_Load_Color_Table_16_23:
case (byte)CD_EG_Instructions.CDEG_Load_Color_Table_24_31:
case (byte)CD_EG_Instructions.CDEG_Load_Color_Table_32_39:
case (byte)CD_EG_Instructions.CDEG_Load_Color_Table_40_47:
case (byte)CD_EG_Instructions.CDEG_Load_Color_Table_48_55:
case (byte)CD_EG_Instructions.CDEG_Load_Color_Table_56_63:
case (byte)CD_EG_Instructions.CDEG_Load_Color_Table_64_71:
case (byte)CD_EG_Instructions.CDEG_Load_Color_Table_72_79:
case (byte)CD_EG_Instructions.CDEG_Load_Color_Table_80_87:
case (byte)CD_EG_Instructions.CDEG_Load_Color_Table_88_95:
case (byte)CD_EG_Instructions.CDEG_Load_Color_Table_96_103:
case (byte)CD_EG_Instructions.CDEG_Load_Color_Table_104_111:
case (byte)CD_EG_Instructions.CDEG_Load_Color_Table_112_119:
case (byte)CD_EG_Instructions.CDEG_Load_Color_Table_120_127:
case (byte)CD_EG_Instructions.CDEG_Load_Color_Table_128_135:
case (byte)CD_EG_Instructions.CDEG_Load_Color_Table_136_143:
case (byte)CD_EG_Instructions.CDEG_Load_Color_Table_144_151:
case (byte)CD_EG_Instructions.CDEG_Load_Color_Table_152_159:
case (byte)CD_EG_Instructions.CDEG_Load_Color_Table_160_167:
case (byte)CD_EG_Instructions.CDEG_Load_Color_Table_168_175:
case (byte)CD_EG_Instructions.CDEG_Load_Color_Table_176_183:
case (byte)CD_EG_Instructions.CDEG_Load_Color_Table_184_191:
case (byte)CD_EG_Instructions.CDEG_Load_Color_Table_192_199:
case (byte)CD_EG_Instructions.CDEG_Load_Color_Table_200_207:
case (byte)CD_EG_Instructions.CDEG_Load_Color_Table_208_215:
case (byte)CD_EG_Instructions.CDEG_Load_Color_Table_216_223:
case (byte)CD_EG_Instructions.CDEG_Load_Color_Table_224_231:
case (byte)CD_EG_Instructions.CDEG_Load_Color_Table_232_239:
case (byte)CD_EG_Instructions.CDEG_Load_Color_Table_240_247:
case (byte)CD_EG_Instructions.CDEG_Load_Color_Table_248_255:
case (byte)CD_EG_Instructions.CDEG_Load_Color_Table_Additional_8_15:
case (byte)CD_EG_Instructions.CDEG_Load_Color_Table_Additional_16_23:
case (byte)CD_EG_Instructions.CDEG_Load_Color_Table_Additional_24_31:
case (byte)CD_EG_Instructions.CDEG_Load_Color_Table_Additional_32_39:
case (byte)CD_EG_Instructions.CDEG_Load_Color_Table_Additional_40_47:
case (byte)CD_EG_Instructions.CDEG_Load_Color_Table_Additional_48_55:
case (byte)CD_EG_Instructions.CDEG_Load_Color_Table_Additional_56_63:
case (byte)CD_EG_Instructions.CDEG_Load_Color_Table_Additional_64_71:
case (byte)CD_EG_Instructions.CDEG_Load_Color_Table_Additional_72_79:
case (byte)CD_EG_Instructions.CDEG_Load_Color_Table_Additional_80_87:
case (byte)CD_EG_Instructions.CDEG_Load_Color_Table_Additional_88_95:
case (byte)CD_EG_Instructions.CDEG_Load_Color_Table_Additional_96_103:
case (byte)CD_EG_Instructions.CDEG_Load_Color_Table_Additional_104_111:
case (byte)CD_EG_Instructions.CDEG_Load_Color_Table_Additional_112_119:
case (byte)CD_EG_Instructions.CDEG_Load_Color_Table_Additional_120_127:
case (byte)CD_EG_Instructions.CDEG_Load_Color_Table_Additional_128_135:
case (byte)CD_EG_Instructions.CDEG_Load_Color_Table_Additional_136_143:
case (byte)CD_EG_Instructions.CDEG_Load_Color_Table_Additional_144_151:
case (byte)CD_EG_Instructions.CDEG_Load_Color_Table_Additional_152_159:
case (byte)CD_EG_Instructions.CDEG_Load_Color_Table_Additional_160_167:
case (byte)CD_EG_Instructions.CDEG_Load_Color_Table_Additional_168_175:
case (byte)CD_EG_Instructions.CDEG_Load_Color_Table_Additional_176_183:
case (byte)CD_EG_Instructions.CDEG_Load_Color_Table_Additional_184_191:
case (byte)CD_EG_Instructions.CDEG_Load_Color_Table_Additional_192_199:
case (byte)CD_EG_Instructions.CDEG_Load_Color_Table_Additional_200_207:
case (byte)CD_EG_Instructions.CDEG_Load_Color_Table_Additional_208_215:
case (byte)CD_EG_Instructions.CDEG_Load_Color_Table_Additional_216_223:
case (byte)CD_EG_Instructions.CDEG_Load_Color_Table_Additional_224_231:
case (byte)CD_EG_Instructions.CDEG_Load_Color_Table_Additional_232_239:
case (byte)CD_EG_Instructions.CDEG_Load_Color_Table_Additional_240_247:
case (byte)CD_EG_Instructions.CDEG_Load_Color_Table_Additional_248_255:
Console.WriteLine("Load Color Table.");
break;
default:
Console.WriteLine("Unknown instruction 0x{0:X2}", packet.instruction);
break;
}
break;
case (byte)CD_RW_Commands.CD_MIDI:
Console.Write("CD+MIDI contains {0} MIDI bytes.", packet.instruction & 0xF);
break;
case (byte)CD_RW_Commands.CD_User:
Console.Write("User data packetized.");
break;
default:
return;
}
Console.WriteLine("P Parity = 0x{0:X2}{1:X2}{2:X2}{3:X2}", packet.parityP[0], packet.parityP[1], packet.parityP[2], packet.parityP[3]);
Console.WriteLine("Q Parity = 0x{0:X2}{1:X2}", packet.parityQ[0], packet.parityQ[1]);
}
}
}
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