openh264/codec/decoder/core/inc/bit_stream.h

/*!
 * \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
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 *
 */

//bit_stream.h  -       bit-stream reading and / writing auxiliary data
#ifndef WELS_BIT_STREAM_H__
#define WELS_BIT_STREAM_H__

#include "typedefs.h"
#include "wels_common_defs.h"
#include "golomb_common.h"

using namespace WelsCommon;

namespace WelsDec {

/*!
 * \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 DecInitBits (PBitStringAux pBitString, const uint8_t* kpBuf, const int32_t kiSize);

int32_t InitReadBits (PBitStringAux pBitString, intX_t iEndOffset);

void RBSP2EBSP (uint8_t* pDstBuf, uint8_t* pSrcBuf, const int32_t kiSize);

} // namespace WelsDec

#endif//WELS_BIT_STREAM_H__