/*! * \copy *     Copyright (c)  2004-2013, Cisco Systems *     All rights reserved. * *     Redistribution and use in source and binary forms, with or without *     modification, are permitted provided that the following conditions *     are met: * *        * Redistributions of source code must retain the above copyright *          notice, this list of conditions and the following disclaimer. * *        * Redistributions in binary form must reproduce the above copyright *          notice, this list of conditions and the following disclaimer in *          the documentation and/or other materials provided with the *          distribution. * *     THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS *     "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT *     LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS *     FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE *     COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, *     INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, *     BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; *     LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER *     CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT *     LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN *     ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE *     POSSIBILITY OF SUCH DAMAGE. * */ //bit_stream.h	-	bit-stream reading and / writing auxiliary data#ifndef WELS_BIT_STREAM_H__#define WELS_BIT_STREAM_H__ #include "typedefs.h"namespace WelsDec { /* *	Bit-stream auxiliary reading / writing */typedef struct TagBitStringAux {  uint8_t*		pStartBuf;	// buffer to start position  uint8_t*		pEndBuf;	// buffer + length  int32_t     iBits;       // count bits of overall bitstreaming input   intX_t     iIndex;      //only for cavlc usage  uint8_t*		pCurBuf;	// current reading position  uint32_t    uiCurBits;  int32_t		iLeftBits;	// count number of available bits left ([1, 8]),// need pointer to next byte start position in case 0 bit left then 8 instead} SBitStringAux, *PBitStringAux; /*! * \brief	input bits for decoder or initialize bitstream writing in encoder * * \param	pBitString	Bit string auxiliary pointer * \param	kpBuf		bit-stream buffer * \param	kiSize	    size in bits for decoder; size in bytes for encoder * * \return	size of buffer data in byte; failed in -1 return */int32_t InitBits (PBitStringAux pBitString, const uint8_t* kpBuf, const int32_t kiSize); int32_t InitReadBits (PBitStringAux pBitString, intX_t iEndOffset); //The following for writing bs in decoder for Parse Only purposevoid DecInitBitsForEncoding (PBitStringAux pBitString, uint8_t* kpBuf, const int32_t kiSize);int32_t DecBsWriteBits (PBitStringAux pBitString, int32_t iLen, const uint32_t kuiValue);int32_t DecBsWriteOneBit (PBitStringAux pBitString, const uint32_t kuiValue);int32_t DecBsFlush (PBitStringAux pBitString);int32_t DecBsWriteUe (PBitStringAux pBitString, const uint32_t kuiValue);int32_t DecBsWriteSe (PBitStringAux pBitString, const int32_t kiValue);int32_t DecBsRbspTrailingBits (PBitStringAux pBitString);void RBSP2EBSP (uint8_t* pDstBuf, uint8_t* pSrcBuf, const int32_t kiSize); } // namespace WelsDec #endif//WELS_BIT_STREAM_H__