+
−/* 
+
−+----------------------------------------------------------------------------- 
+
−|  Project :  
+
−|  Modul   : bitfun.h
+
−+----------------------------------------------------------------------------- 
+
−|  Copyright 2002 Texas Instruments Berlin, AG 
+
−|                 All rights reserved. 
+
−| 
+
−|                 This file is confidential and a trade secret of Texas 
+
−|                 Instruments Berlin, AG 
+
−|                 The receipt of or possession of this file does not convey 
+
−|                 any rights to reproduce or disclose its contents or to 
+
−|                 manufacture, use, or sell anything it may describe, in 
+
−|                 whole, or in part, without the specific written consent of 
+
−|                 Texas Instruments Berlin, AG. 
+
−+----------------------------------------------------------------------------- 
+
−|  Purpose :  Condat Coder Decoder
+
−|             Prototypes of the elementary bit manipulation functions
+
−+----------------------------------------------------------------------------- 
+
−*/ 
+
−
+
−
+
−#ifndef __BITFUN
+
−#define __BITFUN
+
−
+
−
+
−#ifndef __BITFUN_C__
+
−
+
−EXTERN void   bf_writePadBits      (T_CCD_Globs *globs);
+
−EXTERN void   bf_writeVal          (ULONG value, ULONG bSize, T_CCD_Globs *globs);
+
−EXTERN ULONG  bf_getBits           (ULONG  len, T_CCD_Globs *globs);
+
−EXTERN void   bf_writeBitStr_PER   (USHORT len, T_CCD_Globs *globs);
+
−EXTERN void   bf_readBitStr_PER    (USHORT len, T_CCD_Globs *globs);
+
−EXTERN void   bf_writeBits         (ULONG  len, T_CCD_Globs *globs);
+
−EXTERN void   bf_readBits          (ULONG  len, T_CCD_Globs *globs);
+
−EXTERN void   bf_writeBitChunk     (ULONG  len, T_CCD_Globs *globs);
+
−EXTERN void   bf_readBitChunk      (ULONG  len, T_CCD_Globs *globs);
+
−EXTERN BOOL   bf_readBit           (T_CCD_Globs *globs);
+
−EXTERN void   bf_writeBit          (BOOL Bit, T_CCD_Globs *globs);
+
−EXTERN UBYTE  bf_decodeByteNumber  (const ULONG len, T_CCD_Globs *globs);
+
−EXTERN ULONG  bf_decodeShortNumber (const ULONG len, T_CCD_Globs *globs);
+
−EXTERN ULONG  bf_decodeLongNumber  (UBYTE len, T_CCD_Globs *globs);
+
−EXTERN void   bf_codeShortNumber   (UBYTE len, USHORT val, T_CCD_Globs *globs);
+
−EXTERN void   bf_codeByteNumber    (UBYTE len, UBYTE val, T_CCD_Globs *globs);
+
−EXTERN void   bf_codeLongNumber    (UBYTE len, ULONG val, T_CCD_Globs *globs);
+
−EXTERN void   bf_recodeShortNumber (USHORT pos, UBYTE len, USHORT val, T_CCD_Globs *globs);
+
−EXTERN void   bf_recodeByteNumber  (USHORT pos, UBYTE len, UBYTE  val, T_CCD_Globs *globs);
+
−EXTERN void   bf_recodeBit         (USHORT pos, UBYTE Bit, T_CCD_Globs *globs);
+
−EXTERN void   bf_rShift8Bit        (USHORT srcBitPos, USHORT bitLen, T_CCD_Globs *globs);
+
−
+
−#endif /* __BITFUN_C__ */
+
−
+
−/* a Macro for incrementing the position in the bitbuffer         */
+
−/* _bitpos, _bytepos and _byteoffs are recalculated               */
+
−
+
−#define bf_incBitpos(A, globs) globs->bitpos = (USHORT)(globs->bitpos+(A));\
+
−                        globs->bytepos = (USHORT)(globs->bitpos >> 3);\
+
−                        globs->byteoffs = (UBYTE)(globs->bitpos & 7)
+
−#define bf_setBitpos(A, globs) globs->bitpos = (USHORT)(A);\
+
−                        globs->bytepos = (USHORT)(globs->bitpos >> 3);\
+
−                        globs->byteoffs = (UBYTE)(globs->bitpos & 7)
+
−
+
−/*
+
− * end of bitstream if we can not read almost 4 bits
+
− */
+
−#define bf_endOfBitstream(globs) (globs->bitpos >= globs->maxBitpos)
+
−
+
−#endif