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Refactoring Progress

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This commit is contained in:
Brett Sanderson 2016-03-06 00:32:50 -05:00
parent ab3f7de52c
commit cfbcbcab12
9 changed files with 405 additions and 648 deletions
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94
CdgLib/CdgFileIoStream.cs
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@ -1,94 +0,0 @@
using System.IO;
namespace CdgLib
{
/// <summary>
/// </summary>
public class CdgFileIoStream
{
private Stream _cdgFile;
/// <summary>
/// </summary>
public CdgFileIoStream()
{
_cdgFile = null;
}
/// <summary>
/// Reads the specified buf.
/// </summary>
/// <param name="buf">The buf.</param>
/// <param name="bufSize">The buf_size.</param>
/// <returns></returns>
public int Read(ref byte[] buf, int bufSize)
{
return _cdgFile.Read(buf, 0, bufSize);
}
/// <summary>
/// Writes the specified buf.
/// </summary>
/// <param name="buf">The buf.</param>
/// <param name="bufSize">The buf_size.</param>
/// <returns></returns>
public int Write(ref byte[] buf, int bufSize)
{
_cdgFile.Write(buf, 0, bufSize);
return 1;
}
/// <summary>
/// Seeks the specified offset.
/// </summary>
/// <param name="offset">The offset.</param>
/// <param name="whence">The whence.</param>
/// <returns></returns>
public int Seek(int offset, SeekOrigin whence)
{
return (int) _cdgFile.Seek(offset, whence);
}
/// <summary>
/// EOFs this instance.
/// </summary>
/// <returns></returns>
public bool Eof()
{
return _cdgFile.Position >= _cdgFile.Length;
}
/// <summary>
/// Getsizes this instance.
/// </summary>
/// <returns></returns>
public int Getsize()
{
return (int) _cdgFile.Length;
}
/// <summary>
/// Opens the specified filename.
/// </summary>
/// <param name="filename">The filename.</param>
/// <returns></returns>
public bool Open(string filename)
{
Close();
_cdgFile = new FileStream(filename, FileMode.Open, FileAccess.Read);
return _cdgFile != null;
}
/// <summary>
/// Closes this instance.
/// </summary>
public void Close()
{
if (_cdgFile != null)
{
_cdgFile.Close();
_cdgFile = null;
}
}
}
}

5
CdgLib/CdgLib.csproj
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@ -42,15 +42,12 @@
<Reference Include="System.Xml" /> <Reference Include="System.Xml" />
</ItemGroup> </ItemGroup>
<ItemGroup> <ItemGroup>
<Compile Include="Extension\Extensions.cs" /> <Compile Include="GraphicFileStream.cs" />
<Compile Include="SubCode\Command.cs" /> <Compile Include="SubCode\Command.cs" />
<Compile Include="SubCode\Instruction.cs" /> <Compile Include="SubCode\Instruction.cs" />
<Compile Include="GraphicsFile.cs" /> <Compile Include="GraphicsFile.cs" />
<Compile Include="CdgFileIoStream.cs" />
<Compile Include="Graphic.cs" /> <Compile Include="Graphic.cs" />
<Compile Include="SubCode\Packet.cs" /> <Compile Include="SubCode\Packet.cs" />
<Compile Include="GraphicUtil.cs" />
<Compile Include="Surface.cs" />
<Compile Include="Properties\AssemblyInfo.cs" /> <Compile Include="Properties\AssemblyInfo.cs" />
</ItemGroup> </ItemGroup>
<Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" /> <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />

13
CdgLib/Extension/Extensions.cs
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@ -1,13 +0,0 @@
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace CdgLib.Extension
{
internal class Extensions
{
void tr
}
}

336
CdgLib/Graphic.cs
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@ -1,24 +1,30 @@
using System; using System;
using System.Collections.Generic; using System.Collections.Generic;
using System.Drawing; using System.Drawing;
using System.Drawing.Imaging;
using System.IO; using System.IO;
using System.Linq; using System.Runtime.InteropServices;
using System.Text;
using System.Threading.Tasks;
using CdgLib.SubCode; using CdgLib.SubCode;
namespace CdgLib namespace CdgLib
{ {
public class Graphic public class Graphic
{ {
private const int ColourTableSize = 16;
private const int TileHeight = 12;
private const int TileWidth = 6;
public const int FullWidth = 300;
public const int FullHeight = 216;
private readonly int[] _colourTable = new int[ColourTableSize];
private readonly byte[,] _pixelColours = new byte[FullHeight, FullWidth];
private int[,] _graphicData; private int[,] _graphicData;
public Graphic(IEnumerable<Packet> packets) public Graphic(IEnumerable<Packet> packets)
{ {
foreach (var packet in packets) foreach (var packet in packets)
{ {
packet.ApplyTransform(ref _graphicData); Process(packet);
} }
} }
@ -27,21 +33,339 @@ namespace CdgLib
Bitmap myBitmap; Bitmap myBitmap;
using (var bitmapStream = new MemoryStream()) using (var bitmapStream = new MemoryStream())
{ {
foreach (var colourValue in _mPSurface.RgbData) foreach (var colourValue in _graphicData)
{ {
var colour = BitConverter.GetBytes(colourValue); var colour = BitConverter.GetBytes(colourValue);
bitmapStream.Write(colour, 0, 4); bitmapStream.Write(colour, 0, 4);
} }
myBitmap = GraphicUtil.StreamToBitmap(bitmapStream, FullWidth, FullHeight); myBitmap = StreamToBitmap(bitmapStream, FullWidth, FullHeight);
} }
myBitmap.MakeTransparent(myBitmap.GetPixel(1, 1)); myBitmap.MakeTransparent(myBitmap.GetPixel(1, 1));
return myBitmap; return myBitmap;
} }
private Bitmap StreamToBitmap(Stream stream, int width, int height)
{
//create a new bitmap
var bmp = new Bitmap(width, height, PixelFormat.Format32bppArgb);
var bmpData = bmp.LockBits(new Rectangle(0, 0, width, height), ImageLockMode.WriteOnly, bmp.PixelFormat);
stream.Seek(0, SeekOrigin.Begin);
//copy the stream of pixel
for (var n = 0; n <= stream.Length - 1; n++)
{
var myByte = new byte[1];
stream.Read(myByte, 0, 1);
Marshal.WriteByte(bmpData.Scan0, n, myByte[0]);
}
bmp.UnlockBits(bmpData);
return bmp;
}
private void Process(Packet packet)
{
if (packet.Command != Command.Graphic) return;
switch (packet.Instruction)
{
case Instruction.MemoryPreset:
MemoryPreset(packet);
break;
case Instruction.BorderPreset:
BorderPreset(packet);
break;
case Instruction.TileBlockNormal:
TileBlock(packet, false);
break;
case Instruction.ScrollPreset:
Scroll(packet, false);
break;
case Instruction.ScrollCopy:
Scroll(packet, true);
break;
case Instruction.DefineTransparentColor:
DefineTransparentColour(packet);
break;
case Instruction.LoadColorTableLower:
LoadColorTable(packet, 0);
break;
case Instruction.LoadColorTableUpper:
LoadColorTable(packet, 1);
break;
case Instruction.TileBlockXor:
TileBlock(packet, true);
break;
}
}
private void MemoryPreset(Packet packet)
{
var colour = packet.Data[0] & 0xf;
var repeat = packet.Data[1] & 0xf;
//we have a reliable packet stream, so the repeat command
//is executed only the first time
if (repeat == 0)
{
//Note that this may be done before any load colour table
//commands by some CDGs. So the load colour table itself
//actual recalculates the RGB values for all pixels when
//the colour table changes.
//Set the preset colour for every pixel. Must be stored in
//the pixel colour table indeces array
for (int rowIndex = 0; rowIndex < _pixelColours.GetLength(0); rowIndex++)
{
for (int columnIndex = 0; columnIndex < _pixelColours.GetLength(1); columnIndex++)
{
_pixelColours[rowIndex, columnIndex] = (byte)colour;
}
}
}
}
private void BorderPreset(Packet packet)
{
int rowIndex;
int columnIndex;
var colour = packet.Data[0] & 0xf;
//The border area is the area contained with a rectangle
//defined by (0,0,300,216) minus the interior pixels which are contained
//within a rectangle defined by (6,12,294,204).
for (rowIndex = 0; rowIndex < _pixelColours.GetLength(0); rowIndex++)
{
for (columnIndex = 0; columnIndex < 6; columnIndex++)
{
_pixelColours[rowIndex, columnIndex] = (byte)colour;
}
for (columnIndex = _pixelColours.GetLength(1) - 6; columnIndex < _pixelColours.GetLength(1); columnIndex++)
{
_pixelColours[rowIndex, columnIndex] = (byte)colour;
}
}
for (columnIndex = 6; columnIndex < _pixelColours.GetLength(1) - 6; columnIndex++)
{
for (rowIndex = 0; rowIndex < 12; rowIndex++)
{
_pixelColours[rowIndex, columnIndex] = (byte)colour;
}
for (rowIndex = _pixelColours.GetLength(1) - 12; rowIndex < _pixelColours.GetLength(1); rowIndex++)
{
_pixelColours[rowIndex, columnIndex] = (byte)colour;
}
}
}
private void LoadColorTable(Packet packet, int table)
{
for (var i = 0; i < 8; i++)
{
//[---high byte---] [---low byte----]
//7 6 5 4 3 2 1 0 7 6 5 4 3 2 1 0
//X X r r r r g g X X g g b b b b
var highByte = packet.Data[2 * i];
var lowByte = packet.Data[2 * i + 1];
var red = (highByte & 0x3f) >> 2;
var green = ((highByte & 0x3) << 2) | ((lowByte & 0x3f) >> 4);
var blue = lowByte & 0xf;
//4 bit colour to 8 bit colour
red *= 17;
green *= 17;
blue *= 17;
_colourTable[i + table*8] = Color.FromArgb(red, green, blue).ToArgb();
}
}
private void TileBlock(Packet packet, bool bXor)
{
var colour0 = packet.Data[0] & 0xf;
var colour1 = packet.Data[1] & 0xf;
var rowIndex = (packet.Data[2] & 0x1f) * 12;
var columnIndex = (packet.Data[3] & 0x3f) * 6;
if (rowIndex > FullHeight - TileHeight)
return;
if (columnIndex > FullWidth - TileWidth)
return;
//Set the pixel array for each of the pixels in the 12x6 tile.
//Normal = Set the colour to either colour0 or colour1 depending
//on whether the pixel value is 0 or 1.
//XOR = XOR the colour with the colour index currently there.
for (var i = 0; i <= 11; i++)
{
var myByte = packet.Data[4 + i] & 0x3f;
for (var j = 0; j <= 5; j++)
{
var pixel = (myByte >> (5 - j)) & 0x1;
var newCol = 0;
if (bXor)
{
//Tile Block XOR
var xorCol = pixel == 0 ? colour0 : colour1;
//Get the colour index currently at this location, and xor with it
int currentColourIndex = _pixelColours[rowIndex + i, columnIndex + j];
newCol = currentColourIndex ^ xorCol;
}
else
{
newCol = pixel == 0 ? colour0 : colour1;
}
//Set the pixel with the new colour. We set both the surfarray
//containing actual RGB values, as well as our array containing
//the colour indexes into our colour table.
_pixelColours[rowIndex + i, columnIndex + j] = (byte)newCol;
}
}
}
private void DefineTransparentColour(Packet packet)
{
//_mTransparentColour = packet.Data[0] & 0xf;
}
private void Scroll(Packet packet, bool copy)
{
//Decode the scroll command parameters
var colour = packet.Data[0] & 0xf;
var horizontalScroll = packet.Data[1] & 0x3f;
var verticalScroll = packet.Data[2] & 0x3f;
var horizontalScrollCommand = (horizontalScroll & 0x30) >> 4;
var horizontalOffset = horizontalScroll & 0x7;
var verticalScrollCommand = (verticalScroll & 0x30) >> 4;
var verticalOffset = verticalScroll & 0xf;
_mHOffset = horizontalOffset < 5 ? horizontalOffset : 5;
_mVOffset = verticalOffset < 11 ? verticalOffset : 11;
//Scroll Vertical - Calculate number of pixels
var verticalScrollPixels = 0;
switch (verticalScrollCommand)
{
case 2:
verticalScrollPixels = -12;
break;
case 1:
verticalScrollPixels = 12;
break;
}
//Scroll Horizontal- Calculate number of pixels
var horizontalScrollPixels = 0;
switch (horizontalScrollCommand)
{
case 2:
horizontalScrollPixels = -6;
break;
case 1:
horizontalScrollPixels = 6;
break;
}
if (horizontalScrollPixels == 0 && verticalScrollPixels == 0)
{
return;
}
//Perform the actual scroll.
var temp = new byte[FullHeight + 1, FullWidth + 1];
var vInc = verticalScrollPixels + FullHeight;
var hInc = horizontalScrollPixels + FullWidth;
var rowIndex = 0;
//row index
var columnIndex = 0;
//column index
for (rowIndex = 0; rowIndex <= FullHeight - 1; rowIndex++)
{
for (columnIndex = 0; columnIndex <= FullWidth - 1; columnIndex++)
{
temp[(rowIndex + vInc) % FullHeight, (columnIndex + hInc) % FullWidth] = _pixelColours[rowIndex, columnIndex];
}
}
//if copy is false, we were supposed to fill in the new pixels
//with a new colour. Go back and do that now.
if (copy == false)
{
if (verticalScrollPixels > 0)
{
for (columnIndex = 0; columnIndex <= FullWidth - 1; columnIndex++)
{
for (rowIndex = 0; rowIndex <= verticalScrollPixels - 1; rowIndex++)
{
temp[rowIndex, columnIndex] = (byte)colour;
}
}
}
else if (verticalScrollPixels < 0)
{
for (columnIndex = 0; columnIndex <= FullWidth - 1; columnIndex++)
{
for (rowIndex = FullHeight + verticalScrollPixels; rowIndex <= FullHeight - 1; rowIndex++)
{
temp[rowIndex, columnIndex] = (byte)colour;
}
}
}
if (horizontalScrollPixels > 0)
{
for (columnIndex = 0; columnIndex <= horizontalScrollPixels - 1; columnIndex++)
{
for (rowIndex = 0; rowIndex <= FullHeight - 1; rowIndex++)
{
temp[rowIndex, columnIndex] = (byte)colour;
}
}
}
else if (horizontalScrollPixels < 0)
{
for (columnIndex = FullWidth + horizontalScrollPixels; columnIndex <= FullWidth - 1; columnIndex++)
{
for (rowIndex = 0; rowIndex <= FullHeight - 1; rowIndex++)
{
temp[rowIndex, columnIndex] = (byte)colour;
}
}
}
}
//Now copy the temporary buffer back to our array
for (rowIndex = 0; rowIndex <= FullHeight - 1; rowIndex++)
{
for (columnIndex = 0; columnIndex <= FullWidth - 1; columnIndex++)
{
_pixelColours[rowIndex, columnIndex] = temp[rowIndex, columnIndex];
}
}
}
} }
} }

46
CdgLib/GraphicFileStream.cs Normal file
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@ -0,0 +1,46 @@
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Threading.Tasks;
using CdgLib.SubCode;
namespace CdgLib
{
public class GraphicFileStream : FileStream
{
private const int PacketSize = 24;
public GraphicFileStream(string path) : base(path, FileMode.Open, FileAccess.Read, FileShare.Read)
{
}
public async Task<IEnumerable<Packet>> ReadFile()
{
Position = 0;
var subCodePackets = new List<Packet>();
var buffer = new byte[Length];
var bytesRead = await ReadAsync(buffer, 0, buffer.Length);
for (var i = 0; i < bytesRead/PacketSize; i++)
{
var subCodePacket = new Packet(buffer.Skip(i*PacketSize).Take(PacketSize).ToArray());
subCodePackets.Add(subCodePacket);
}
return subCodePackets;
}
private async Task<IEnumerable<Packet>> ReadSubCodeAsync(long numberOfPackets)
{
var subCodePackets = new List<Packet>();
var buffer = new byte[PacketSize*numberOfPackets];
var bytesRead = await ReadAsync(buffer, 0, buffer.Length);
for (var i = 0; i < bytesRead/PacketSize; i++)
{
var subCodePacket = new Packet(buffer.Skip(i*PacketSize).Take(PacketSize).ToArray());
subCodePackets.Add(subCodePacket);
}
return subCodePackets;
}
}
}

109
CdgLib/GraphicUtil.cs
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@ -1,109 +0,0 @@
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Drawing.Imaging;
using System.IO;
using System.Runtime.InteropServices;
namespace CdgLib
{
/// <summary>
/// </summary>
public class GraphicUtil
{
/// <summary>
/// Bitmaps to stream.
/// </summary>
/// <param name="filename">The filename.</param>
/// <returns></returns>
public static Stream BitmapToStream(string filename)
{
var oldBmp = (Bitmap) Image.FromFile(filename);
var oldData = oldBmp.LockBits(new Rectangle(0, 0, oldBmp.Width, oldBmp.Height), ImageLockMode.WriteOnly,
PixelFormat.Format24bppRgb);
var length = oldData.Stride*oldBmp.Height;
var stream = new byte[length];
Marshal.Copy(oldData.Scan0, stream, 0, length);
oldBmp.UnlockBits(oldData);
oldBmp.Dispose();
return new MemoryStream(stream);
}
/// <summary>
/// Streams to bitmap.
/// </summary>
/// <param name="stream">The stream.</param>
/// <param name="width">The width.</param>
/// <param name="height">The height.</param>
/// <returns></returns>
public static Bitmap StreamToBitmap(Stream stream, int width, int height)
{
//create a new bitmap
var bmp = new Bitmap(width, height, PixelFormat.Format32bppArgb);
var bmpData = bmp.LockBits(new Rectangle(0, 0, width, height), ImageLockMode.WriteOnly, bmp.PixelFormat);
stream.Seek(0, SeekOrigin.Begin);
//copy the stream of pixel
for (var n = 0; n <= stream.Length - 1; n++)
{
var myByte = new byte[1];
stream.Read(myByte, 0, 1);
Marshal.WriteByte(bmpData.Scan0, n, myByte[0]);
}
bmp.UnlockBits(bmpData);
return bmp;
}
/// <summary>
/// Gets the CDG size bitmap.
/// </summary>
/// <param name="filename">The filename.</param>
/// <returns></returns>
public static Bitmap GetCdgSizeBitmap(string filename)
{
var bm = new Bitmap(filename);
return ResizeBitmap(ref bm, GraphicsFile.FullWidth, GraphicsFile.FullHeight);
}
/// <summary>
/// Resizes the bitmap.
/// </summary>
/// <param name="bm">The bm.</param>
/// <param name="width">The width.</param>
/// <param name="height">The height.</param>
/// <returns></returns>
public static Bitmap ResizeBitmap(ref Bitmap bm, int width, int height)
{
var thumb = new Bitmap(width, height);
using (bm)
{
using (var g = Graphics.FromImage(thumb))
{
g.InterpolationMode = InterpolationMode.HighQualityBicubic;
g.DrawImage(bm, new Rectangle(0, 0, width, height), new Rectangle(0, 0, bm.Width, bm.Height),
GraphicsUnit.Pixel);
}
}
return thumb;
}
/// <summary>
/// Merges the images with transparency.
/// </summary>
/// <param name="picture1">The pic1.</param>
/// <param name="picture2">The pic2.</param>
/// <returns></returns>
public static Bitmap MergeImagesWithTransparency(Bitmap picture1, Bitmap picture2)
{
Bitmap mergedImage;
var bm = new Bitmap(picture1.Width, picture1.Height);
using (var gr = Graphics.FromImage(bm))
{
gr.DrawImage(picture1, 0, 0);
picture2.MakeTransparent(picture2.GetPixel(1, 1));
gr.DrawImage(picture2, 0, 0);
mergedImage = bm;
}
return mergedImage;
}
}
}

99
CdgLib/GraphicsFile.cs
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@ -1,105 +1,46 @@
using System; using System.Collections.Generic;
using System.Collections.Generic;
using System.Drawing; using System.Drawing;
using System.Drawing.Imaging;
using System.IO;
using System.Linq; using System.Linq;
using System.Threading.Tasks; using System.Threading.Tasks;
using CdgLib.SubCode; using CdgLib.SubCode;
namespace CdgLib namespace CdgLib
{ {
public class GraphicsFile : FileStream public class GraphicsFile
{ {
private const int ColourTableSize = 16;
private const int PacketSize = 24; private const int PacketSize = 24;
private const int TileHeight = 12; private IEnumerable<Packet> _packets;
private const int TileWidth = 6;
public const int FullWidth = 300;
public const int FullHeight = 216;
private readonly int[] _colourTable = new int[ColourTableSize]; private GraphicsFile()
private readonly byte[,] _pixelColours = new byte[FullHeight, FullWidth];
private long _previousPosition;
public GraphicsFile(string path) : base(path, FileMode.Open, FileAccess.Read, FileShare.Read)
{ {
} }
public bool Transparent => true; public bool Transparent => true;
public long Duration => Length/PacketSize*1000/300; public long Duration => _packets.Count()/PacketSize*1000/300;
public async Task<Bitmap> RenderAtTime(long position = -1) public static async Task<GraphicsFile> LoadAsync(string fileName)
{ {
if (position < 0) var graphicsFile = new GraphicsFile {_packets = await LoadFileAsync(fileName)};
{ return graphicsFile;
position = _previousPosition + PacketSize; }
}
if (position < _previousPosition) private static async Task<IEnumerable<Packet>> LoadFileAsync(string fileName)
{
using (var fileStream = new GraphicFileStream(fileName))
{ {
// Reset(); return await fileStream.ReadFile();
} }
}
public Bitmap RenderAtTime(long time)
{
//duration of one packet is 1/300 seconds (4 packets per sector, 75 sectors per second) //duration of one packet is 1/300 seconds (4 packets per sector, 75 sectors per second)
//p=t*3/10 t=p*10/3 t=milliseconds, p=packets //p=t*3/10 t=p*10/3 t=milliseconds, p=packets
var timeToRender = position - _previousPosition; var numberOfSubCodePackets = (int) (time*3/10);
_previousPosition += timeToRender; var graphic = new Graphic(_packets.Take(numberOfSubCodePackets));
var numberOfSubCodePackets = timeToRender*3/10; var image = graphic.ToBitmap();
return image;
var subCodePackets = await ReadSubCodeAsync(numberOfSubCodePackets);
foreach (var subCodePacket in subCodePackets)
{
// ProcessPacket(subCodePacket);
}
RenderSurface();
}
private async Task<IEnumerable<Packet>> ReadSubCodeAsync(long numberOfPackets)
{
var subCodePackets = new List<Packet>();
var buffer = new byte[PacketSize*numberOfPackets];
var bytesRead = await ReadAsync(buffer, 0, buffer.Length);
for (var i = 0; i < bytesRead/PacketSize; i++)
{
var subCodePacket = new Packet(buffer.Skip(i* PacketSize).Take(PacketSize).ToArray());
subCodePackets.Add(subCodePacket);
}
return subCodePackets;
}
private void RenderSurface()
{
if (_mPSurface == null)
return;
for (var ri = 0; ri <= FullHeight - 1; ri++)
{
for (var ci = 0; ci <= FullWidth - 1; ci++)
{
if (ri < TileHeight || ri >= FullHeight - TileHeight || ci < TileWidth ||
ci >= FullWidth - TileWidth)
{
// _mPSurface.RgbData[ri, ci] = _colourTable[_mBorderColourIndex];
}
else
{
_mPSurface.RgbData[ri, ci] = _colourTable[_pixelColours[ri + _mVOffset, ci + _mHOffset]];
}
}
}
} }
} }
} }

335
CdgLib/SubCode/Packet.cs
View File

@ -4,340 +4,19 @@ namespace CdgLib.SubCode
{ {
public class Packet public class Packet
{ {
public Command Command { get; }
public Instruction Instruction { get; }
public byte[] ParityQ { get; } = new byte[2];
public byte[] Data { get; } = new byte[16];
public byte[] ParityP { get; } = new byte[4];
public Packet(byte[] data) public Packet(byte[] data)
{ {
Command = (Command)(data[0] & 0x3F); Command = (Command) (data[0] & 0x3F);
Instruction = (Instruction)(data[1] & 0x3F); Instruction = (Instruction) (data[1] & 0x3F);
Array.Copy(data, 2, ParityQ, 0, 2); Array.Copy(data, 2, ParityQ, 0, 2);
Array.Copy(data, 4, Data, 0, 16); Array.Copy(data, 4, Data, 0, 16);
Array.Copy(data, 20, ParityP, 0, 4); Array.Copy(data, 20, ParityP, 0, 4);
} }
public void ApplyTransform(int[,] data) public Command Command { get; }
{ public Instruction Instruction { get; }
if (Command != Command.Graphic) return; public byte[] ParityQ { get; } = new byte[2];
switch (Instruction) public byte[] Data { get; } = new byte[16];
{ public byte[] ParityP { get; } = new byte[4];
case Instruction.MemoryPreset:
MemoryPreset(data);
break;
case Instruction.BorderPreset:
BorderPreset(data);
break;
case Instruction.TileBlockNormal:
TileBlock(data,false);
break;
case Instruction.ScrollPreset:
Scroll(data,false);
break;
case Instruction.ScrollCopy:
Scroll(data,true);
break;
case Instruction.DefineTransparentColor:
DefineTransparentColour(data);
break;
case Instruction.LoadColorTableLower:
LoadColorTable(data,0);
break;
case Instruction.LoadColorTableUpper:
LoadColorTable(data,1);
break;
case Instruction.TileBlockXor:
TileBlock(data,true);
break;
}
}
private void MemoryPreset(int[,] data)
{
var colour = Data[0] & 0xf;
var repeat = Data[1] & 0xf;
//we have a reliable data stream, so the repeat command
//is executed only the first time
if (repeat == 0)
{
//Note that this may be done before any load colour table
//commands by some CDGs. So the load colour table itself
//actual recalculates the RGB values for all pixels when
//the colour table changes.
//Set the preset colour for every pixel. Must be stored in
//the pixel colour table indeces array
for (int rowIndex = 0; rowIndex < data.GetLength(0); rowIndex++)
{
for (int columnIndex = 0; columnIndex < data.GetLength(1); columnIndex++)
{
data[rowIndex, columnIndex] = (byte) colour;
}
}
}
}
private void BorderPreset(int[,] data)
{
int rowIndex;
int columnIndex;
var colour = Data[0] & 0xf;
//The border area is the area contained with a rectangle
//defined by (0,0,300,216) minus the interior pixels which are contained
//within a rectangle defined by (6,12,294,204).
for (rowIndex = 0; rowIndex < data.GetLength(0); rowIndex++)
{
for (columnIndex = 0; columnIndex < 6; columnIndex++)
{
data[rowIndex, columnIndex] = (byte) colour;
}
for (columnIndex = data.GetLength(1) - 6; columnIndex < data.GetLength(1); columnIndex++)
{
data[rowIndex, columnIndex] = (byte) colour;
}
}
for (columnIndex = 6; columnIndex < data.GetLength(1) - 6; columnIndex++)
{
for (rowIndex = 0; rowIndex < 12; rowIndex++)
{
data[rowIndex, columnIndex] = (byte) colour;
}
for (rowIndex = data.GetLength(1) - 12; rowIndex < data.GetLength(1); rowIndex++)
{
data[rowIndex, columnIndex] = (byte) colour;
}
}
}
private void LoadColorTable(int[,] data,int table)
{
for (var i = 0; i < 8; i++)
{
//[---high byte---] [---low byte----]
//7 6 5 4 3 2 1 0 7 6 5 4 3 2 1 0
//X X r r r r g g X X g g b b b b
var byte0 = Data[2*i];
var byte1 = Data[2*i + 1];
var red = (byte0 & 0x3f) >> 2;
var green = ((byte0 & 0x3) << 2) | ((byte1 & 0x3f) >> 4);
var blue = byte1 & 0xf;
red *= 17;
green *= 17;
blue *= 17;
if (_mPSurface != null)
{
_mColourTable[i + table*8] = _mPSurface.MapRgbColour(red, green, blue);
}
}
}
private void TileBlock(int[,] data,bool bXor)
{
var colour0 = 0;
var colour1 = 0;
var columnIndex = 0;
var rowIndex = 0;
var myByte = 0;
var pixel = 0;
var xorCol = 0;
var currentColourIndex = 0;
var newCol = 0;
colour0 = pack.Data[0] & 0xf;
colour1 = pack.Data[1] & 0xf;
rowIndex = (pack.Data[2] & 0x1f)*12;
columnIndex = (pack.Data[3] & 0x3f)*6;
if (rowIndex > FullHeight - TileHeight)
return;
if (columnIndex > FullWidth - TileWidth)
return;
//Set the pixel array for each of the pixels in the 12x6 tile.
//Normal = Set the colour to either colour0 or colour1 depending
//on whether the pixel value is 0 or 1.
//XOR = XOR the colour with the colour index currently there.
for (var i = 0; i <= 11; i++)
{
myByte = pack.Data[4 + i] & 0x3f;
for (var j = 0; j <= 5; j++)
{
pixel = (myByte >> (5 - j)) & 0x1;
if (bXor)
{
//Tile Block XOR
xorCol = pixel == 0 ? colour0 : colour1;
//Get the colour index currently at this location, and xor with it
currentColourIndex = _mPixelColours[rowIndex + i, columnIndex + j];
newCol = currentColourIndex ^ xorCol;
}
else
{
newCol = pixel == 0 ? colour0 : colour1;
}
//Set the pixel with the new colour. We set both the surfarray
//containing actual RGB values, as well as our array containing
//the colour indexes into our colour table.
_mPixelColours[rowIndex + i, columnIndex + j] = (byte) newCol;
}
}
}
private void DefineTransparentColour(int[,] data)
{
_mTransparentColour = Data[0] & 0xf;
}
private void Scroll(int[,] data,bool copy)
{
//Decode the scroll command parameters
var colour = Data[0] & 0xf;
var horizontalScroll = Data[1] & 0x3f;
var verticalScroll = Data[2] & 0x3f;
var horizontalScrollCommand = (horizontalScroll & 0x30) >> 4;
var horizontalOffset = horizontalScroll & 0x7;
var verticalScrollCommand = (verticalScroll & 0x30) >> 4;
var verticalOffset = verticalScroll & 0xf;
_mHOffset = horizontalOffset < 5 ? horizontalOffset : 5;
_mVOffset = verticalOffset < 11 ? verticalOffset : 11;
//Scroll Vertical - Calculate number of pixels
var verticalScrollPixels = 0;
switch (verticalScrollCommand)
{
case 2:
verticalScrollPixels = -12;
break;
case 1:
verticalScrollPixels = 12;
break;
}
//Scroll Horizontal- Calculate number of pixels
var horizontalScrollPixels = 0;
switch (horizontalScrollCommand)
{
case 2:
horizontalScrollPixels = -6;
break;
case 1:
horizontalScrollPixels = 6;
break;
}
if (horizontalScrollPixels == 0 && verticalScrollPixels == 0)
{
return;
}
//Perform the actual scroll.
var temp = new byte[FullHeight + 1, FullWidth + 1];
var vInc = verticalScrollPixels + FullHeight;
var hInc = horizontalScrollPixels + FullWidth;
var rowIndex = 0;
//row index
var columnIndex = 0;
//column index
for (rowIndex = 0; rowIndex <= FullHeight - 1; rowIndex++)
{
for (columnIndex = 0; columnIndex <= FullWidth - 1; columnIndex++)
{
temp[(rowIndex + vInc)%FullHeight, (columnIndex + hInc)%FullWidth] = _mPixelColours[rowIndex, columnIndex];
}
}
//if copy is false, we were supposed to fill in the new pixels
//with a new colour. Go back and do that now.
if (copy == false)
{
if (verticalScrollPixels > 0)
{
for (columnIndex = 0; columnIndex <= FullWidth - 1; columnIndex++)
{
for (rowIndex = 0; rowIndex <= verticalScrollPixels - 1; rowIndex++)
{
temp[rowIndex, columnIndex] = (byte) colour;
}
}
}
else if (verticalScrollPixels < 0)
{
for (columnIndex = 0; columnIndex <= FullWidth - 1; columnIndex++)
{
for (rowIndex = FullHeight + verticalScrollPixels; rowIndex <= FullHeight - 1; rowIndex++)
{
temp[rowIndex, columnIndex] = (byte) colour;
}
}
}
if (horizontalScrollPixels > 0)
{
for (columnIndex = 0; columnIndex <= horizontalScrollPixels - 1; columnIndex++)
{
for (rowIndex = 0; rowIndex <= FullHeight - 1; rowIndex++)
{
temp[rowIndex, columnIndex] = (byte) colour;
}
}
}
else if (horizontalScrollPixels < 0)
{
for (columnIndex = FullWidth + horizontalScrollPixels; columnIndex <= FullWidth - 1; columnIndex++)
{
for (rowIndex = 0; rowIndex <= FullHeight - 1; rowIndex++)
{
temp[rowIndex, columnIndex] = (byte) colour;
}
}
}
}
//Now copy the temporary buffer back to our array
for (rowIndex = 0; rowIndex <= FullHeight - 1; rowIndex++)
{
for (columnIndex = 0; columnIndex <= FullWidth - 1; columnIndex++)
{
_mPixelColours[rowIndex, columnIndex] = temp[rowIndex, columnIndex];
}
}
}
} }
} }

14
CdgLib/Surface.cs
View File

@ -1,14 +0,0 @@
using System.Drawing;
namespace CdgLib
{
public class Surface
{
public int[,] RgbData = new int[GraphicsFile.FullHeight, GraphicsFile.FullWidth];
public int MapRgbColour(int red, int green, int blue)
{
return Color.FromArgb(red, green, blue).ToArgb();
}
}
}