Initial community commit

Src/vlb/bitsequence.h

@@ -0,0 +1,63 @@
+/* $Header: /cvs/root/winamp/vlb/bitsequence.h,v 1.1 2009/04/28 20:21:08 audiodsp Exp $ */
+
+/***************************************************************************\ 
+ *
+ *           Copyright 2000-2002 Dolby Laboratories, Inc.  All Rights 
+ *                Reserved.  Do not copy.  Do not distribute.  
+ *                     Confidential information.
+ *
+ *           (C) copyright Fraunhofer - IIS (1998)
+ *                All Rights Reserved
+ *
+ *   filename: bitsequence.h
+ *   project : MPEG-2 AAC Decoder
+ *   contents/description: bitstream helper object
+ *
+\***************************************************************************/
+
+#ifndef __VLB_BITSEQUENCE_H__
+#define __VLB_BITSEQUENCE_H__
+
+#include "bitstream.h"
+
+/** Bitstream Parser Utility.
+
+    This helper class is basically a numerical value that can read itself from a 
+    \Ref{CDolbyBitStream} interface for convenience. The decoder almost completely
+    does the bitstream parsing through CVLBBitSequence rather than \Ref{CDolbyBitStream} directly.
+*/
+
+class CVLBBitSequence
+{
+
+public :
+
+  CVLBBitSequence (const int length = 0) ;
+  CVLBBitSequence (const int length, const int value) ;
+
+  ~CVLBBitSequence () ;
+
+  int Read (CDolbyBitStream& bs, const int length) ;
+
+  int Read (CDolbyBitStream& bs)
+  {
+    m_Value = bs.Get (m_Length) ;
+    return m_Value ;
+  }
+
+  operator int() const
+  {
+    return m_Value ;
+  }
+
+  CVLBBitSequence &operator=(int) ;
+  CVLBBitSequence &operator+=(int) ;
+
+protected :
+
+  int m_Length ;
+  int m_Value ;
+
+} ;
+
+#endif