/* ----------------------------------------------------------------------------- The copyright in this software is being made available under the Clear BSD License, included below. No patent rights, trademark rights and/or other Intellectual Property Rights other than the copyrights concerning the Software are granted under this license. The Clear BSD License Copyright (c) 2018-2023, Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. & The VVdeC Authors. All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted (subject to the limitations in the disclaimer below) 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. * Neither the name of the copyright holder nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission. NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED BY THIS LICENSE. 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 VLCWReader.h * \brief Reader for high level syntax */ #pragma once #include "CommonLib/Rom.h" #include "CommonLib/BitStream.h" #include "CommonLib/Slice.h" #include "CommonLib/SampleAdaptiveOffset.h" #include "CABACReader.h" #if ENABLE_TRACING #define READ_SCODE(length, code, name) xReadSCode ( length, code, name ) #define READ_CODE(length, code, name) xReadCodeTr ( length, code, name ) #define READ_UVLC( code, name) xReadUvlcTr ( code, name ) #define READ_SVLC( code, name) xReadSvlcTr ( code, name ) #define READ_FLAG( code, name) xReadFlagTr ( code, name ) #else #define READ_SCODE(length, code, name) xReadSCode ( length, code ) #define READ_CODE(length, code, name) xReadCode ( length, code ) #define READ_UVLC( code, name) xReadUvlc ( code ) #define READ_SVLC( code, name) xReadSvlc ( code ) #define READ_FLAG( code, name) xReadFlag ( code ) #endif namespace vvdec { // ==================================================================================================================== // Class definition // ==================================================================================================================== class VLCReader { protected: InputBitstream* m_pcBitstream; VLCReader() : m_pcBitstream (NULL) {}; virtual ~VLCReader() {}; void xReadCode ( uint32_t length, uint32_t& val ); void xReadUvlc ( uint32_t& val ); void xReadSvlc ( int& val ); void xReadFlag ( uint32_t& val ); #if ENABLE_TRACING void xReadCodeTr ( uint32_t length, uint32_t& rValue, const char *pSymbolName ); void xReadUvlcTr ( uint32_t& rValue, const char *pSymbolName ); void xReadSvlcTr ( int& rValue, const char *pSymbolName ); void xReadFlagTr ( uint32_t& rValue, const char *pSymbolName ); #endif #if ENABLE_TRACING void xReadSCode ( uint32_t length, int& val, const char *pSymbolName ); #else void xReadSCode ( uint32_t length, int& val ); #endif public: void setBitstream ( InputBitstream* p ) { m_pcBitstream = p; } InputBitstream* getBitstream() { return m_pcBitstream; } protected: void xReadRbspTrailingBits(); bool isByteAligned() { return ( m_pcBitstream->getNumBitsUntilByteAligned() == 0 ); } }; class AUDReader: public VLCReader { public: AUDReader() {}; virtual ~AUDReader() {}; void parseAccessUnitDelimiter( InputBitstream* bs, uint32_t &picType ); }; class FDReader: public VLCReader { public: FDReader() {}; virtual ~FDReader() {}; void parseFillerData(InputBitstream* bs, uint32_t &fdSize); }; class HLSyntaxReader : public VLCReader { public: HLSyntaxReader() = default; virtual ~HLSyntaxReader() = default; void parseVPS ( VPS* pcVPS ); void parseDCI ( DCI* dci ); void parseSPS ( SPS* pcSPS, const ParameterSetManager* parameterSetManager ); void parsePPS ( PPS* pcPPS, const ParameterSetManager* parameterSetManager ); void parseAPS ( APS* pcAPS); void parsePictureHeader ( PicHeader* picHeader, const ParameterSetManager* parameterSetManager, bool readRbspTrailingBits ); void parseSliceHeader ( Slice* pcSlice, std::shared_ptr& picHeader, const ParameterSetManager* parameterSetManager, const int prevTid0POC, bool& firstSliceInPic ); private: void parseAlfAps ( APS* pcAPS ); void parseLmcsAps ( APS* pcAPS ); void parseScalingListAps ( APS* pcAPS ); void parseVUI ( VUI* pcVUI, SPS* pcSPS ); void parseConstraintInfo ( ConstraintInfo *cinfo ); void parseProfileTierLevel ( ProfileTierLevel *ptl, bool profileTierPresentFlag, int maxNumSubLayersMinus1 ); void parseOlsHrdParameters ( GeneralHrdParams* generalHrd, OlsHrdParams *olsHrd, uint32_t firstSubLayer, uint32_t tempLevelHigh ); void parseGeneralHrdParameters( GeneralHrdParams *generalHrd ); template void parsePicOrSliceHeaderRPL ( HeaderT* header, const SPS* sps, const PPS* pps ); void parseRefPicList ( ReferencePictureList* rpl, int rplIdx, const SPS* pcSPS ); void copyRefPicList ( const SPS* pcSPS, const ReferencePictureList* source_rpl, ReferencePictureList* dest_rpl ); void checkAlfNaluTidAndPicTid ( const Slice* pcSlice, const PicHeader* picHeader, const ParameterSetManager* parameterSetManager); void parsePredWeightTable ( Slice* pcSlice, const SPS *sps ); void parsePredWeightTable ( PicHeader *picHeader, const SPS *sps ); void parseScalingList ( ScalingList *scalingList, bool aps_chromaPresentFlag ); void decodeScalingList ( ScalingList *scalingList, uint32_t scalingListId, bool isPredictor ); void alfFilter ( AlfSliceParam& alfSliceParam, const bool isChroma, const int altIdx ); void dpb_parameters ( int maxSubLayersMinus1, bool subLayerInfoFlag, SPS *pcSPS ); void parseExtraPHBitsStruct ( SPS *sps, int numBytes ); void parseExtraSHBitsStruct ( SPS *sps, int numBytes ); bool xMoreRbspData(); }; }