141 lines
5.1 KiB
C++
141 lines
5.1 KiB
C++
/*!
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* \copy
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* Copyright (c) 2009-2013, Cisco Systems
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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*
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* \file nal_encap.h
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*
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* \brief NAL pRawNal pData encapsulation
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*
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* \date 2/4/2009 Created
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*
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*************************************************************************************
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*/
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#ifndef WELS_NAL_UNIT_ENCAPSULATION_H__
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#define WELS_NAL_UNIT_ENCAPSULATION_H__
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#include "typedefs.h"
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#include "bit_stream.h"
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#include "nal_prefix.h"
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//SBitStringAux
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namespace WelsSVCEnc {
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#define NAL_HEADER_SIZE (4)
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/*
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* Raw payload pData for NAL unit, AVC/SVC compatible
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*/
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typedef struct TagWelsNalRaw {
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uint8_t* pRawData; // pRawNal payload for slice pData
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int32_t iPayloadSize; // size of pRawNal pData
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SNalUnitHeaderExt sNalExt; // NAL header information
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int32_t iStartPos; //NAL start position in buffer
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} SWelsNalRaw;
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/*
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* Encoder majoy output pData
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*/
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typedef struct TagWelsEncoderOutput {
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uint8_t* pBsBuffer; // overall bitstream pBuffer allocation for a coded picture, recycling use intend.
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uint32_t uiSize; // size of allocation pBuffer above
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SBitStringAux sBsWrite;
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// 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;
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SWelsNalRaw* sNalList; // nal list, adaptive for AVC/SVC in case single slice, multiple slices or fmo
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int32_t iCountNals; // count number of NAL in list
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// SVC: num_sps (MAX_D) + num_pps (MAX_D) + num_vcl (MAX_D * MAX_Q)
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int32_t iNalIndex; // coding NAL currently, 0 based
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// bool bAnnexBFlag; // annexeb flag, to figure it pOut the packetization mode whether need 4 bytes (0 0 0 1) of start code prefix
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} SWelsEncoderOutput;
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//#define MT_DEBUG_BS_WR 0 // for MT debugging if needed
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typedef struct TagWelsSliceBs {
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uint8_t* pBs; // output bitstream, pBitStringAux not needed for slice 0 due to no dependency of pFrameBs available
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uint32_t uiBsPos; // position of output bitstream
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uint8_t* pBsBuffer; // overall bitstream pBuffer allocation for a coded slice, recycling use intend.
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uint32_t uiSize; // size of allocation pBuffer above
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SBitStringAux sBsWrite;
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SWelsNalRaw sNalList[2]; // nal list, PREFIX NAL(if applicable) + SLICE NAL
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// int32_t iCountNals; // count number of NAL in list
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int32_t iNalLen[2];
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int32_t iNalIndex; // coding NAL currently, 0 based
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// bool bAnnexBFlag; // annexeb flag, to figure it pOut the packetization mode whether need 4 bytes (0 0 0 1) of start code prefix
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#if MT_DEBUG_BS_WR
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bool bSliceCodedFlag;
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#endif//MT_DEBUG_BS_WR
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} SWelsSliceBs;
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/*!
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* \brief load an initialize NAL pRawNal pData
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*/
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void WelsLoadNal (SWelsEncoderOutput* pEncoderOuput, const int32_t/*EWelsNalUnitType*/ kiType,
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const int32_t/*EWelsNalRefIdc*/ kiNalRefIdc);
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/*!
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* \brief unload pRawNal NAL
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*/
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void WelsUnloadNal (SWelsEncoderOutput* pEncoderOuput);
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/*!
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* \brief load an initialize NAL pRawNal pData
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*/
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void WelsLoadNalForSlice (SWelsSliceBs* pSliceBs, const int32_t/*EWelsNalUnitType*/ kiType,
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const int32_t/*EWelsNalRefIdc*/ kiNalRefIdc);
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/*!
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* \brief unload pRawNal NAL
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*/
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void WelsUnloadNalForSlice (SWelsSliceBs* pSliceBs);
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/*!
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* \brief encode NAL with emulation forbidden three bytes checking
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* \param pDst pDst NAL pData
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* \param pDstLen length of pDst NAL output
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* \param annexeb annexeb flag
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* \param pRawNal pRawNal NAL pData
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* \return ERR_CODE
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*/
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int32_t WelsEncodeNal (SWelsNalRaw* pRawNal, void* pNalHeaderExt, const int32_t kiDstBufferLen, void* pDst,
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int32_t* pDstLen);
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/*!
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* \brief write prefix nal
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*/
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int32_t WelsWriteSVCPrefixNal (SBitStringAux* pBitStringAux, const int32_t keNalRefIdc, const bool kbIdrFlag);
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}
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#endif//WELS_NAL_UNIT_ENCAPSULATION_H__
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