/*! * \copy *     Copyright (c)  2009-2013, 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. * * \file	au_parser.h * * \brief	Interfaces introduced in Access Unit level based parser * * \date	03/10/2009 Created * ************************************************************************************* */#ifndef WELS_ACCESS_UNIT_PARSER_H__#define WELS_ACCESS_UNIT_PARSER_H__#include "typedefs.h"#include "wels_common_basis.h"#include "nal_prefix.h"#include "dec_frame.h"#include "bit_stream.h"#include "parameter_sets.h"#include "decoder_context.h" namespace WelsDec { /*! ************************************************************************************* * \brief	Start Code Prefix (0x 00 00 00 01) detection * * \param 	pBuf		bitstream payload buffer * \param	pOffset		offset between NAL rbsp and original bitsteam that * 				start code prefix is seperated from. * \param	iBufSize	count size of buffer * * \return	RBSP buffer of start code prefix exclusive * * \note	N/A ************************************************************************************* */uint8_t* DetectStartCodePrefix (const uint8_t* kpBuf, int32_t* pOffset, int32_t iBufSize); /*! ************************************************************************************* * \brief	to parse network abstraction layer unit, *			escape emulation_prevention_three_byte within it 	former name is parse_nal * * \param	pCtx		    decoder context * \param 	pNalUnitHeader	parsed result of NAL Unit Header to output * \param   pSrcRbsp        bitstream buffer to input * \param   iSrcRbspLen     length size of bitstream buffer payload * \param	pSrcNal * \param	iSrcNalLen * \param	pConsumedBytes	consumed bytes during parsing * * \return	decoded bytes payload, might be (pSrcRbsp+1) if no escapes * * \note	N/A ************************************************************************************* */uint8_t* ParseNalHeader (PWelsDecoderContext pCtx, SNalUnitHeader* pNalUnitHeader, uint8_t* pSrcRbsp,                         int32_t iSrcRbspLen, uint8_t* pSrcNal, int32_t iSrcNalLen, int32_t* pConsumedBytes); int32_t ParseNonVclNal (PWelsDecoderContext pCtx, uint8_t* pRbsp, const int32_t kiSrcLen, uint8_t* pSrcNal, const int32_t kSrcNalLen); int32_t ParseRefBasePicMarking (PBitStringAux pBs, PRefBasePicMarking pRefBasePicMarking); int32_t ParsePrefixNalUnit (PWelsDecoderContext pCtx, PBitStringAux pBs); bool CheckAccessUnitBoundary (PWelsDecoderContext pCtx, const PNalUnit kpCurNal, const PNalUnit kpLastNal,                              const PSps kpSps);bool CheckAccessUnitBoundaryExt (PNalUnitHeaderExt pLastNalHdrExt, PNalUnitHeaderExt pCurNalHeaderExt,                                 PSliceHeader pLastSliceHeader, PSliceHeader pCurSliceHeader);bool CheckNextAuNewSeq (PWelsDecoderContext pCtx, const PNalUnit kpCurNal, const PSps kpSps); /*! ************************************************************************************* * \brief	to parse Sequence Parameter Set (SPS) * * \param	pCtx		Decoder context * \param	pBsAux		bitstream reader auxiliary * \param	pPicWidth	picture width current Sps represented * \param	pPicHeight	picture height current Sps represented * * \return	0 - successed *		1 - failed * * \note	Call it in case eNalUnitType is SPS. ************************************************************************************* */int32_t ParseSps (PWelsDecoderContext pCtx, PBitStringAux pBsAux, int32_t* pPicWidth, int32_t* pPicHeight, uint8_t* pSrcNal, const int32_t kSrcNalLen); /*! ************************************************************************************* * \brief	to parse Picture Parameter Set (PPS) * * \param	pCtx		Decoder context * \param 	pPpsList	pps list * \param	pBsAux		bitstream reader auxiliary * * \return	0 - successed *		1 - failed * * \note	Call it in case eNalUnitType is PPS. ************************************************************************************* */int32_t ParsePps (PWelsDecoderContext pCtx, PPps pPpsList, PBitStringAux pBsAux, uint8_t* pSrcNal, const int32_t kSrcNalLen); /*! ************************************************************************************* * \brief	to parse SEI message payload * * \param 	pSei		sei message to be parsed output * \param	pBsAux		bitstream reader auxiliary * * \return	0 - successed *		1 - failed * * \note	Call it in case eNalUnitType is NAL_UNIT_SEI. ************************************************************************************* */int32_t ParseSei (void* pSei, PBitStringAux pBsAux);	// reserved Sei_Msg type /*! ************************************************************************************* * \brief	reset fmo list due to got Sps now * * \param	pCtx	decoder context * * \return	count number of fmo context units are reset ************************************************************************************* */int32_t ResetFmoList (PWelsDecoderContext pCtx); } // namespace WelsDec #endif//WELS_ACCESS_UNIT_PARSER_H__