ref: 8c88b934735a3d7668755b66b06b7305d03456c9
dir: /codec/encoder/core/inc/svc_enc_macroblock.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.
*
*/
//macroblock.h
#ifndef WELS_MACROBLOCK_H__
#define WELS_MACROBLOCK_H__
#include "typedefs.h"
#include "wels_const.h"
#include "wels_common_basis.h"
#include "macros.h"
namespace WelsEnc {
//struct Mb_s;
/* MB syntax and context, refer to Page 399 in JVT X201wcm */
// keep the most essential level pData structure be 64 Bytes, which matches cache line size; if so, the order with structure maybe negligible.
// pls take care when modify MB structure size
typedef struct TagMB {
/*************************mb_layer() syntax and generated********************************/
/*mb_layer():*/
Mb_Type uiMbType; // including MB detailed partition type, number and type of reference list
uint8_t uiSubMbType[4]; // sub MB types
int32_t iMbXY; // offset position of MB top left point based
int16_t iMbX; // position of MB in horizontal axis [0..32767]
int16_t iMbY; // position of MB in vertical axis [0..32767]
uint8_t uiNeighborAvail; // avail && same_slice: LEFT_MB_POS:0x01, TOP_MB_POS:0x02, TOPRIGHT_MB_POS = 0x04 ,TOPLEFT_MB_POS = 0x08;
uint8_t uiCbp;
SMVUnitXY* sMv;
int8_t* pRefIndex;
int32_t* pSadCost; // mb sad. set to 0 for intra mb
int8_t* pIntra4x4PredMode; // [MB_BLOCK4x4_NUM]
int8_t* pNonZeroCount; // [MB_LUMA_CHROMA_BLOCK4x4_NUM]
SMVUnitXY sP16x16Mv;
uint8_t uiLumaQp; // uiLumaQp: pPps->iInitialQp + sSliceHeader->delta_qp + mb->dquant.
uint8_t uiChromaQp;
uint16_t uiSliceIdc; // 2^16=65536 > MaxFS(36864) of level 5.1; AVC: iFirstMbInSlice?; SVC: (iFirstMbInSlice << 7) | ((uiDependencyId << 4) | uiQualityId);
uint32_t uiChromPredMode;
int32_t iLumaDQp;
SMVUnitXY sMvd[MB_BLOCK4x4_NUM]; //only for CABAC writing; storage structure the same as sMv, in 4x4 scan order.
int32_t iCbpDc;
//uint8_t reserved_filling_bytes[1]; // not deleting this line for further changes of this structure. filling bytes reserved to make structure aligned with 4 bytes, higher cache hit on less structure size by 2 cache lines( 2 * 64 bytes) once hit
} SMB, *PMb;
}
#endif//WELS_MACROBLOCK_H__