dmolony-DiskBrowser/src/com/bytezone/diskbrowser/applefile/CharacterRom.java

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package com.bytezone.diskbrowser.applefile;
import java.awt.image.DataBuffer;
import java.util.ArrayList;
import java.util.List;
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// see graffidisk.v1.0.2mg
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// -----------------------------------------------------------------------------------//
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public class CharacterRom extends CharacterList
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// -----------------------------------------------------------------------------------//
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{
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private static final int charsX = 16;
private static final int charsY = 6;
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String description;
List<Character> characters = new ArrayList<> ();
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// ---------------------------------------------------------------------------------//
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public CharacterRom (String name, byte[] buffer)
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// ---------------------------------------------------------------------------------//
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{
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super (name, buffer, charsX, charsY, 256);
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description = new String (buffer, 16, 16);
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assert sizeX == (buffer[5] & 0xFF);
assert sizeY == (buffer[6] & 0xFF);
}
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// ---------------------------------------------------------------------------------//
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public static boolean isRom (byte[] buffer)
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// ---------------------------------------------------------------------------------//
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{
if (buffer.length != 0x400)
return false;
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// no idea what these mean
// BD 41 53 10 A0 07 08
return buffer[0] == (byte) 0xBD && buffer[1] == (byte) 0x41
&& buffer[2] == (byte) 0x53 && buffer[3] == (byte) 0x10;
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}
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// ---------------------------------------------------------------------------------//
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@Override
Character createCharacter (byte[] buffer, int ptr)
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// ---------------------------------------------------------------------------------//
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{
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return new CharacterRomCharacter (buffer, ptr);
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}
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// ---------------------------------------------------------------------------------//
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class CharacterRomCharacter extends Character
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// ---------------------------------------------------------------------------------//
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{
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// -------------------------------------------------------------------------------//
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public CharacterRomCharacter (byte[] buffer, int ptr)
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// -------------------------------------------------------------------------------//
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{
DataBuffer dataBuffer = image.getRaster ().getDataBuffer ();
int element = 0;
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for (int i = 0; i < sizeY; i++)
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{
int value = buffer[ptr++] & 0xFF;
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for (int j = 0; j < sizeX; j++)
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{
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dataBuffer.setElem (element++, (value & 0x80) == 0 ? 0 : 0xFF);
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value <<= 1;
}
}
}
}
}