ref: 708f7939338291658f7585df82a16a6b75e5a604
dir: /codec/decoder/core/inc/nalu.h/
/*!
* \copy
* Copyright (c) 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.
*
*/
//nalu.h: NAL Unit definition
#ifndef WELS_NAL_UNIT_H__
#define WELS_NAL_UNIT_H__
#include "typedefs.h"
#include "wels_common_basis.h"
#include "nal_prefix.h"
#include "bit_stream.h"
namespace WelsDec {
///////////////////////////////////NAL UNIT level///////////////////////////////////
/* NAL Unit Structure */
typedef struct TagNalUnit {
SNalUnitHeaderExt sNalHeaderExt;
union {
struct SVclNal {
SSliceHeaderExt sSliceHeaderExt;
SBitStringAux sSliceBitsRead;
uint8_t* pNalPos; // save the address of slice nal for GPU function
int32_t iNalLength; // save the nal length for GPU function
bool bSliceHeaderExtFlag;
} sVclNal;
SPrefixNalUnit sPrefixNal;
} sNalData;
} SNalUnit, *PNalUnit;
///////////////////////////////////ACCESS Unit level///////////////////////////////////
/* Access Unit structure */
typedef struct TagAccessUnits {
PNalUnit* pNalUnitsList; // list of NAL Units pointer in this AU
uint32_t uiAvailUnitsNum; // Number of NAL Units available in each AU list based current bitstream,
uint32_t uiActualUnitsNum; // actual number of NAL units belong to current au
// While available number exceeds count size below, need realloc extra NAL Units for list space.
uint32_t uiCountUnitsNum; // Count size number of malloced NAL Units in each AU list
uint32_t uiStartPos;
uint32_t uiEndPos;
bool bCompletedAuFlag; // Indicate whether it is a completed AU
} SAccessUnit, *PAccessUnit;
} // namespace WelsDec
#endif//WELS_NAL_UNIT_H__