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/*****************************************************************************
* Copyright (C) 2013-2020 MulticoreWare, Inc
*
* Authors: Steve Borho <steve@borho.org>
* Min Chen <chenm003@163.com>
* Praveen Kumar Tiwari <praveen@multicorewareinc.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02111, USA.
*
* This program is also available under a commercial proprietary license.
* For more information, contact us at license @ x265.com.
*****************************************************************************/
#ifndef X265_SAO_H
#define X265_SAO_H
#include "common.h"
#include "frame.h"
#include "entropy.h"
namespace X265_NS {
// private namespace
enum SAOType
{
SAO_EO_0 = 0,
SAO_EO_1,
SAO_EO_2,
SAO_EO_3,
SAO_BO,
MAX_NUM_SAO_TYPE
};
class SAO
{
public:
enum { SAO_MAX_DEPTH = 4 };
enum { SAO_BO_BITS = 5 };
enum { MAX_NUM_SAO_CLASS = 32 };
enum { SAO_BIT_INC = 0 }; /* in HM12.0, it wrote as X265_MAX(X265_DEPTH - 10, 0) */
enum { OFFSET_THRESH = 1 << X265_MIN(X265_DEPTH - 5, 5) };
enum { NUM_EDGETYPE = 5 };
enum { NUM_PLANE = 3 };
enum { SAO_DEPTHRATE_SIZE = 4 };
static const uint32_t s_eoTable[NUM_EDGETYPE];
typedef int32_t PerClass[MAX_NUM_SAO_TYPE][MAX_NUM_SAO_CLASS];
typedef int32_t PerPlane[NUM_PLANE][MAX_NUM_SAO_TYPE][MAX_NUM_SAO_CLASS];
protected:
/* allocated per part */
PerPlane m_count;
PerPlane m_offset;
PerPlane m_offsetOrg;
/* allocated per CTU */
PerPlane* m_countPreDblk;
PerPlane* m_offsetOrgPreDblk;
double* m_depthSaoRate;
int8_t m_offsetBo[NUM_PLANE][MAX_NUM_SAO_CLASS];
int8_t m_offsetEo[NUM_PLANE][NUM_EDGETYPE];
int m_chromaFormat;
int m_numCuInWidth;
int m_numCuInHeight;
int m_hChromaShift;
int m_vChromaShift;
pixel* m_clipTable;
pixel* m_clipTableBase;
pixel* m_tmpU[3];
pixel* m_tmpL1[3];
pixel* m_tmpL2[3];
public:
struct SAOContexts
{
Entropy cur;
Entropy next;
Entropy temp;
};
Frame* m_frame;
Entropy m_entropyCoder;
SAOContexts m_rdContexts;
x265_param* m_param;
int m_refDepth;
int m_numNoSao[2];
SAO();
bool create(x265_param* param, int initCommon);
void createFromRootNode(SAO *root);
void destroy(int destoryCommon);
void allocSaoParam(SAOParam* saoParam) const;
void startSlice(Frame* pic, Entropy& initState);
void resetStats();
// CTU-based SAO process without slice granularity
void applyPixelOffsets(int addr, int typeIdx, int plane);
void processSaoUnitRow(SaoCtuParam* ctuParam, int idxY, int plane);
void generateLumaOffsets(SaoCtuParam* ctuParam, int idxY, int idxX);
void generateChromaOffsets(SaoCtuParam* ctuParam[3], int idxY, int idxX);
void calcSaoStatsCTU(int addr, int plane);
void calcSaoStatsCu_BeforeDblk(Frame* pic, int idxX, int idxY);
void saoLumaComponentParamDist(SAOParam* saoParam, int addr, int64_t& rateDist, int64_t* lambda, int64_t& bestCost);
void saoChromaComponentParamDist(SAOParam* saoParam, int addr, int64_t& rateDist, int64_t* lambda, int64_t& bestCost);
void estIterOffset(int typeIdx, int64_t lambda, int32_t count, int32_t offsetOrg, int32_t& offset, int32_t& distClasses, int64_t& costClasses);
void rdoSaoUnitRowEnd(const SAOParam* saoParam, int numctus);
void rdoSaoUnitCu(SAOParam* saoParam, int rowBaseAddr, int idxX, int addr);
int64_t calcSaoRdoCost(int64_t distortion, uint32_t bits, int64_t lambda);
void saoStatsInitialOffset(int addr, int planes);
friend class FrameFilter;
};
}
#endif // ifndef X265_SAO_H
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