ref: c6a136c742cf0c982187a021d79c0387beea28af
dir: /codec/encoder/core/inc/nal_encap.h/
/*! * \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 nal_encap.h * * \brief NAL pRawNal pData encapsulation * * \date 2/4/2009 Created * ************************************************************************************* */ #ifndef WELS_NAL_UNIT_ENCAPSULATION_H__ #define WELS_NAL_UNIT_ENCAPSULATION_H__ #include "typedefs.h" #include "bit_stream.h" #include "nal_prefix.h" //SBitStringAux namespace WelsEnc { #define NAL_HEADER_SIZE (4) /* * Raw payload pData for NAL unit, AVC/SVC compatible */ typedef struct TagWelsNalRaw { uint8_t* pRawData; // pRawNal payload for slice pData int32_t iPayloadSize; // size of pRawNal pData SNalUnitHeaderExt sNalExt; // NAL header information int32_t iStartPos; //NAL start position in buffer } SWelsNalRaw; /* * Encoder majoy output pData */ typedef struct TagWelsEncoderOutput { uint8_t* pBsBuffer; // overall bitstream pBuffer allocation for a coded picture, recycling use intend. uint32_t uiSize; // size of allocation pBuffer above SBitStringAux sBsWrite; // SWelsNalRaw raw_nals[MAX_DEPENDENCY_LAYER*2+MAX_DEPENDENCY_LAYER*MAX_QUALITY_LEVEL]; // AVC: max up to SPS+PPS+max_slice_idc (2 + 8) for FMO; SWelsNalRaw* sNalList; // nal list, adaptive for AVC/SVC in case single slice, multiple slices or fmo int32_t* pNalLen; int32_t iCountNals; // count number of NAL in list // SVC: num_sps (MAX_D) + num_pps (MAX_D) + num_vcl (MAX_D * MAX_Q) int32_t iNalIndex; // coding NAL currently, 0 based // bool bAnnexBFlag; // annexeb flag, to figure it pOut the packetization mode whether need 4 bytes (0 0 0 1) of start code prefix } SWelsEncoderOutput; //#define MT_DEBUG_BS_WR 0 // for MT debugging if needed typedef struct TagWelsSliceBs { uint8_t* pBs; // output bitstream, pBitStringAux not needed for slice 0 due to no dependency of pFrameBs available uint32_t uiBsPos; // position of output bitstream uint8_t* pBsBuffer; // overall bitstream pBuffer allocation for a coded slice, recycling use intend. uint32_t uiSize; // size of allocation pBuffer above SBitStringAux sBsWrite; SWelsNalRaw sNalList[2]; // nal list, PREFIX NAL(if applicable) + SLICE NAL // int32_t iCountNals; // count number of NAL in list int32_t iNalLen[2]; int32_t iNalIndex; // coding NAL currently, 0 based // bool bAnnexBFlag; // annexeb flag, to figure it pOut the packetization mode whether need 4 bytes (0 0 0 1) of start code prefix #if MT_DEBUG_BS_WR bool bSliceCodedFlag; #endif//MT_DEBUG_BS_WR } SWelsSliceBs; /*! * \brief load an initialize NAL pRawNal pData */ void WelsLoadNal (SWelsEncoderOutput* pEncoderOuput, const int32_t/*EWelsNalUnitType*/ kiType, const int32_t/*EWelsNalRefIdc*/ kiNalRefIdc); /*! * \brief unload pRawNal NAL */ void WelsUnloadNal (SWelsEncoderOutput* pEncoderOuput); /*! * \brief load an initialize NAL pRawNal pData */ void WelsLoadNalForSlice (SWelsSliceBs* pSliceBs, const int32_t/*EWelsNalUnitType*/ kiType, const int32_t/*EWelsNalRefIdc*/ kiNalRefIdc); /*! * \brief unload pRawNal NAL */ void WelsUnloadNalForSlice (SWelsSliceBs* pSliceBs); /*! * \brief encode NAL with emulation forbidden three bytes checking * \param pDst pDst NAL pData * \param pDstLen length of pDst NAL output * \param annexeb annexeb flag * \param pRawNal pRawNal NAL pData * \return ERR_CODE */ int32_t WelsEncodeNal (SWelsNalRaw* pRawNal, void* pNalHeaderExt, const int32_t kiDstBufferLen, void* pDst, int32_t* pDstLen); /*! * \brief write prefix nal */ int32_t WelsWriteSVCPrefixNal (SBitStringAux* pBitStringAux, const int32_t keNalRefIdc, const bool kbIdrFlag); } #endif//WELS_NAL_UNIT_ENCAPSULATION_H__