Added initial AVC parser. (#176)
* * rocDecode/AVC: Added initial AVC parser. - Added AVC SPS, PPS and slice header parsing functions. - Merged common parsing code from AVC and HEVC parsers to their super class. * * rocDecode/AVC: Formating changes. No functional changes.
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/*
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Copyright (c) 2023 - 2024 Advanced Micro Devices, Inc. All rights reserved.
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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*/
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#pragma once
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#include "avc_defines.h"
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#include "roc_video_parser.h"
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class AvcVideoParser : public RocVideoParser {
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public:
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/*! \brief AvcVideoParser constructor
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*/
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AvcVideoParser();
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/*! \brief AvcVideoParser destructor
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*/
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virtual ~AvcVideoParser();
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/*! \brief Function to Initialize the parser
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* \param [in] p_params Input of <tt>RocdecParserParams</tt> with codec type to initialize parser.
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* \return <tt>rocDecStatus</tt> Returns success on completion, else error code for failure
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*/
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virtual rocDecStatus Initialize(RocdecParserParams *p_params);
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/*! \brief Function to Parse video data: Typically called from application when a demuxed picture is ready to be parsed
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* \param [in] p_data Pointer to picture data of type <tt>RocdecSourceDataPacket</tt>
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* @return <tt>rocDecStatus</tt> Returns success on completion, else error_code for failure
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*/
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virtual rocDecStatus ParseVideoData(RocdecSourceDataPacket *p_data);
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/*! \brief function to uninitialize AVC parser
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* @return rocDecStatus
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*/
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virtual rocDecStatus UnInitialize(); // derived method
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protected:
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/*! \brief Decoded picture buffer
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*/
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typedef struct{
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uint32_t dpb_size; // DPB buffer size in number of frames
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} DecodedPictureBuffer;
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AvcNalUnitHeader nal_unit_header_;
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AvcSeqParameterSet sps_list_[AVC_MAX_SPS_NUM];
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int32_t active_sps_id_;
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AvcPicParameterSet pps_list_[AVC_MAX_PPS_NUM];
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int32_t active_pps_id_;
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AvcNalUnitHeader slice_nal_unit_header_;
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AvcSliceHeader slice_header_0_;
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int prev_has_mmco_5_;
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int curr_has_mmco_5_;
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int prev_ref_pic_bottom_field_;
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int curr_ref_pic_bottom_field_;
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// DPB
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DecodedPictureBuffer dpb_buffer_;
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/*! \brief Function to parse one picture bit stream received from the demuxer.
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* \param [in] p_stream A pointer of <tt>uint8_t</tt> for the input stream to be parsed
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* \param [in] pic_data_size Size of the input stream
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* \return <tt>ParserResult</tt>
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*/
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ParserResult ParsePictureData(const uint8_t *p_stream, uint32_t pic_data_size);
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/*! \brief Function to parse the NAL unit header
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* \param [in] header_byte The AVC NAL unit header byte
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* \return <tt>AvcNalUnitHeader</tt> Parsed nal header
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*/
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AvcNalUnitHeader ParseNalUnitHeader(uint8_t header_byte);
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/*! \brief Function to parse Sequence Parameter Set
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* \param [in] p_stream A pointer of <tt>uint8_t</tt> for the input stream to be parsed
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* \param [in] size Size of the input stream
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* \return No return value
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*/
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void ParseSps(uint8_t *p_stream, size_t size);
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/*! \brief Function to parse Picture Parameter Set
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* \param [in] p_stream A pointer of <tt>uint8_t</tt> for the input stream to be parsed
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* \param [in] size Size of the input stream
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* \return No return value
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*/
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void ParsePps(uint8_t *p_stream, size_t stream_size_in_byte);
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/*! \brief Function to parse slice header
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* \param p_stream The pointer to the input bit stream
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* \param [in] stream_size_in_byte The byte size of the stream
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* \param [out] p_slice_header The pointer to the slice header strucutre
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* \return <tt>ParserResult</tt>
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*/
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ParserResult ParseSliceHeader(uint8_t *p_stream, size_t stream_size_in_byte, AvcSliceHeader *p_slice_header);
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/*! \brief Function to parse a scaling list
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* \param [in] p_stream A pointer of <tt>uint8_t</tt> for the input stream to be parsed
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* \param [in/out] offset Current bit offset
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* \param [out] scaling_list Pointer to the output scaling list
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* \param [in] list_size Scaling list size
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* \param [out] use_default_scaling_matrix_flag Array of flags that indicate whether to use default values
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*/
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void GetScalingList(uint8_t *p_stream, size_t &offset, uint32_t *scaling_list, uint32_t list_size, uint32_t *use_default_scaling_matrix_flag);
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/*! \brief Function to parse vidio usability information (VUI) parameters
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* \param [in] p_stream The pointer to the input bit stream
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* \param [in/out] offset Current bit offset
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* \param [out] p_vui_params The pointer to VUI structure
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* \return No return value
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*/
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void GetVuiParameters(uint8_t *p_stream, size_t &offset, AvcVuiSeqParameters *p_vui_params);
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/*! \brief Function to check if there is more data in RBSP
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* \param [in] p_stream The pointer to the input bit stream
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* \param [in] stream_size_in_byte The byte size of the stream
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* \param [in] bit_offset The current bit offset
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* \return true/false
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*/
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bool MoreRbspData(uint8_t *p_stream, size_t stream_size_in_byte, size_t bit_offset);
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#if DBGINFO
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/*! \brief Function to log out parsed SPS content for debug.
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*/
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void PrintSps(AvcSeqParameterSet *p_sps);
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/*! \brief Function to log out parsed PPS content for debug.
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*/
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void PrintPps(AvcPicParameterSet *p_pps);
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/*! \brief Function to log out parsed slice header content for debug.
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*/
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void PrintSliceHeader(AvcSliceHeader *p_slice_header);
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#endif // DBGINFO
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};
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