diff options
Diffstat (limited to 'org.fox.ttcomics/src/main/java/com/github/junrar/unpack/vm/BitInput.java')
| -rw-r--r-- | org.fox.ttcomics/src/main/java/com/github/junrar/unpack/vm/BitInput.java | 108 |
1 files changed, 108 insertions, 0 deletions
diff --git a/org.fox.ttcomics/src/main/java/com/github/junrar/unpack/vm/BitInput.java b/org.fox.ttcomics/src/main/java/com/github/junrar/unpack/vm/BitInput.java new file mode 100644 index 0000000..603cb77 --- /dev/null +++ b/org.fox.ttcomics/src/main/java/com/github/junrar/unpack/vm/BitInput.java @@ -0,0 +1,108 @@ +/*
+ * Copyright (c) 2007 innoSysTec (R) GmbH, Germany. All rights reserved.
+ * Original author: Edmund Wagner
+ * Creation date: 31.05.2007
+ *
+ * Source: $HeadURL$
+ * Last changed: $LastChangedDate$
+ *
+ * the unrar licence applies to all junrar source and binary distributions
+ * you are not allowed to use this source to re-create the RAR compression algorithm
+ *
+ * Here some html entities which can be used for escaping javadoc tags:
+ * "&": "&" or "&"
+ * "<": "<" or "<"
+ * ">": ">" or ">"
+ * "@": "@"
+ */
+package com.github.junrar.unpack.vm;
+
+/**
+ * DOCUMENT ME
+ *
+ * @author $LastChangedBy$
+ * @version $LastChangedRevision$
+ */
+public class BitInput {
+ /**
+ * the max size of the input
+ */
+ public static final int MAX_SIZE = 0x8000;
+ protected int inAddr;
+ protected int inBit;
+ protected byte[] inBuf;
+
+ /**
+ *
+ */
+ public void InitBitInput()
+ {
+ inAddr=0;
+ inBit=0;
+ }
+ /**
+ * @param Bits
+ */
+ public void addbits(int Bits)
+ {
+ Bits+=inBit;
+ inAddr+=Bits>>3;
+ inBit=Bits&7;
+ }
+
+ /**
+ * @return the bits (unsigned short)
+ */
+ public int getbits()
+ {
+// int BitField=0;
+// BitField|=(int)(inBuf[inAddr] << 16)&0xFF0000;
+// BitField|=(int)(inBuf[inAddr+1] << 8)&0xff00;
+// BitField|=(int)(inBuf[inAddr+2])&0xFF;
+// BitField >>>= (8-inBit);
+// return (BitField & 0xffff);
+ return (((((inBuf[inAddr] & 0xff) << 16) +
+ ((inBuf[inAddr+1] & 0xff) << 8) +
+ ((inBuf[inAddr+2] & 0xff))) >>> (8-inBit)) & 0xffff);
+ }
+
+ /**
+ *
+ */
+ public BitInput()
+ {
+ inBuf=new byte[MAX_SIZE];
+ }
+
+ /**
+ * @param Bits add the bits
+ */
+ public void faddbits(int Bits)
+ {
+ addbits(Bits);
+ }
+
+
+ /**
+ * @return get the bits
+ */
+ public int fgetbits()
+ {
+ return(getbits());
+ }
+
+ /**
+ * Indicates an Overfow
+ * @param IncPtr how many bytes to inc
+ * @return true if an Oververflow would occur
+ */
+ public boolean Overflow(int IncPtr) {
+ return(inAddr+IncPtr>=MAX_SIZE);
+ }
+ public byte[] getInBuf()
+ {
+ return inBuf;
+ }
+
+
+}
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