ref: f10f6a788f3258a1321a38405327f206e648073c
dir: /codec/decoder/core/inc/nal_prefix.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.
*
*/
//nal_prefix.h - definitions for NAL Unit Header(/Ext) and PrefixNALUnit
#ifndef WELS_NAL_UNIT_PREFIX_H__
#define WELS_NAL_UNIT_PREFIX_H__
#include "typedefs.h"
#include "wels_common_basis.h"
#include "slice.h"
namespace WelsDec {
///////////////////////////////////NAL Unit prefix/headers///////////////////////////////////
/* NAL Unix Header in AVC, refer to Page 56 in JVT X201wcm */
typedef struct TagNalUnitHeader {
uint8_t uiForbiddenZeroBit;
uint8_t uiNalRefIdc;
EWelsNalUnitType eNalUnitType;
uint8_t uiReservedOneByte; // only padding usage
} SNalUnitHeader, *PNalUnitHeader;
/* NAL Unit Header in scalable extension syntax, refer to Page 390 in JVT X201wcm */
typedef struct TagNalUnitHeaderExt {
SNalUnitHeader sNalUnitHeader;
// uint8_t reserved_one_bit;
bool bIdrFlag;
uint8_t uiPriorityId;
int8_t iNoInterLayerPredFlag; // change as int8_t to support 3 values probably in encoder
uint8_t uiDependencyId;
uint8_t uiQualityId;
uint8_t uiTemporalId;
bool bUseRefBasePicFlag;
bool bDiscardableFlag;
bool bOutputFlag;
uint8_t uiReservedThree2Bits;
// Derived variable(s)
uint8_t uiLayerDqId;
bool bNalExtFlag;
} SNalUnitHeaderExt, *PNalUnitHeaderExt;
/* Prefix NAL Unix syntax, refer to Page 392 in JVT X201wcm */
typedef struct TagPrefixNalUnit {
SRefBasePicMarking sRefPicBaseMarking;
bool bStoreRefBasePicFlag;
bool bPrefixNalUnitAdditionalExtFlag;
bool bPrefixNalUnitExtFlag;
bool bPrefixNalCorrectFlag;
} SPrefixNalUnit, *PPrefixNalUnit;
} // namespace WelsDec
#endif//WELS_NAL_UNIT_PREFIX_H__