ref: 78ab4000c086c07d6841365541fd86d12ca98e4d
dir: /codec/decoder/core/inc/wels_common_basis.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.
*
*/
//wels_common_basis.h
#ifndef WELS_COMMON_BASIS_H__
#define WELS_COMMON_BASIS_H__
#include "typedefs.h"
#include "macros.h"
#include "wels_common_defs.h"
using namespace WelsCommon;
namespace WelsDec {
/*common use table*/
extern const uint8_t g_kuiScan8[24];
extern const uint8_t g_kuiLumaDcZigzagScan[16];
extern const uint8_t g_kuiChromaDcScan[4];
extern const uint8_t g_kMbNonZeroCountIdx[24];
extern const uint8_t g_kCacheNzcScanIdx[4*4+4+4+3];
extern const uint8_t g_kCache26ScanIdx[16];
extern const uint8_t g_kCache30ScanIdx[16];
extern const uint8_t g_kNonZeroScanIdxC[4];
/* Profile IDC */
typedef uint8_t ProfileIdc;
/* Position Offset structure */
typedef struct TagPosOffset {
int32_t iLeftOffset;
int32_t iTopOffset;
int32_t iRightOffset;
int32_t iBottomOffset;
} SPosOffset;
/* MB Type & Sub-MB Type */
typedef int32_t MbType;
typedef int32_t SubMbType;
#define I16_LUMA_DC 1
#define I16_LUMA_AC 2
#define LUMA_DC_AC 3
#define CHROMA_DC 4
#define CHROMA_AC 5
#define CHROMA_DC_U 6
#define CHROMA_DC_V 7
#define CHROMA_AC_U 8
#define CHROMA_AC_V 9
#define LUMA_DC_AC_INTRA 10
#define LUMA_DC_AC_INTER 11
#define CHROMA_DC_U_INTER 12
#define CHROMA_DC_V_INTER 13
#define CHROMA_AC_U_INTER 14
#define CHROMA_AC_V_INTER 15
#define SHIFT_BUFFER(pBitsCache) { pBitsCache->pBuf+=2; pBitsCache->uiRemainBits += 16; pBitsCache->uiCache32Bit |= (((pBitsCache->pBuf[2] << 8) | pBitsCache->pBuf[3]) << (32 - pBitsCache->uiRemainBits)); }
#define POP_BUFFER(pBitsCache, iCount) { pBitsCache->uiCache32Bit <<= iCount; pBitsCache->uiRemainBits -= iCount; }
static const uint8_t g_kuiZigzagScan[16] = { //4*4block residual zig-zag scan order
0, 1, 4, 8,
5, 2, 3, 6,
9, 12, 13, 10,
7, 11, 14, 15,
};
static inline void GetMbResProperty(int32_t * pMBproperty,int32_t* pResidualProperty,bool bCavlc)
{
switch(*pResidualProperty)
{
case CHROMA_AC_U:
*pMBproperty = 1;
*pResidualProperty = bCavlc ? CHROMA_AC : CHROMA_AC_U;
break;
case CHROMA_AC_V:
*pMBproperty = 2;
*pResidualProperty = bCavlc ? CHROMA_AC : CHROMA_AC_V;
break;
case LUMA_DC_AC_INTRA:
*pMBproperty = 0;
*pResidualProperty = LUMA_DC_AC;
break;
case CHROMA_DC_U:
*pMBproperty = 1;
*pResidualProperty = bCavlc ? CHROMA_DC : CHROMA_DC_U;
break;
case CHROMA_DC_V:
*pMBproperty = 2;
*pResidualProperty = bCavlc ? CHROMA_DC : CHROMA_DC_V;
break;
case I16_LUMA_AC:
*pMBproperty = 0;
break;
case I16_LUMA_DC:
*pMBproperty = 0;
break;
case LUMA_DC_AC_INTER:
*pMBproperty = 3;
*pResidualProperty = LUMA_DC_AC;
break;
case CHROMA_DC_U_INTER:
*pMBproperty = 4;
*pResidualProperty = bCavlc ? CHROMA_DC : CHROMA_DC_U;
break;
case CHROMA_DC_V_INTER:
*pMBproperty = 5;
*pResidualProperty = bCavlc ? CHROMA_DC : CHROMA_DC_V;
break;
case CHROMA_AC_U_INTER:
*pMBproperty = 4;
*pResidualProperty = bCavlc ? CHROMA_AC : CHROMA_AC_U;
break;
case CHROMA_AC_V_INTER:
*pMBproperty = 5;
*pResidualProperty = bCavlc ?CHROMA_AC:CHROMA_AC_V;
break;
}
}
typedef struct TagI16PredInfo {
int8_t iPredMode;
int8_t iLeftAvail;
int8_t iTopAvail;
int8_t iLeftTopAvail;
} SI16PredInfo;
static const SI16PredInfo g_ksI16PredInfo[4] = {
{I16_PRED_V, 0, 1, 0},
{I16_PRED_H, 1, 0, 0},
{ 0, 0, 0, 0},
{I16_PRED_P, 1, 1, 1},
};
static const SI16PredInfo g_ksChromaPredInfo[4] = {
{ 0, 0, 0, 0},
{C_PRED_H, 1, 0, 0},
{C_PRED_V, 0, 1, 0},
{C_PRED_P, 1, 1, 1},
};
typedef struct TagI4PredInfo {
int8_t iPredMode;
int8_t iLeftAvail;
int8_t iTopAvail;
int8_t iLeftTopAvail;
// int8_t right_top_avail; //when right_top unavailable but top avail, we can pad the right-top with the rightmost pixel of top
} SI4PredInfo;
static const SI4PredInfo g_ksI4PredInfo[9] = {
{ I4_PRED_V, 0, 1, 0},
{ I4_PRED_H, 1, 0, 0},
{ 0, 0, 0, 0},
{I4_PRED_DDL, 0, 1, 0},
{I4_PRED_DDR, 1, 1, 1},
{ I4_PRED_VR, 1, 1, 1},
{ I4_PRED_HD, 1, 1, 1},
{ I4_PRED_VL, 0, 1, 0},
{ I4_PRED_HU, 1, 0, 0},
};
static const uint8_t g_kuiI16CbpTable[6] = {0, 16, 32, 15, 31, 47};
typedef struct TagPartMbInfo {
MbType iType;
int8_t iPartCount; //P_16*16, P_16*8, P_8*16, P_8*8 based on 8*8 block; P_8*4, P_4*8, P_4*4 based on 4*4 block
int8_t iPartWidth; //based on 4*4 block
} SPartMbInfo;
static const SPartMbInfo g_ksInterMbTypeInfo[5] = {
{MB_TYPE_16x16, 1, 4},
{MB_TYPE_16x8, 2, 4},
{MB_TYPE_8x16, 2, 2},
{MB_TYPE_8x8, 4, 4},
{MB_TYPE_8x8_REF0, 4, 4}, //ref0--ref_idx not present in bit-stream and default as 0
};
static const SPartMbInfo g_ksInterSubMbTypeInfo[4] = {
{SUB_MB_TYPE_8x8, 1, 2},
{SUB_MB_TYPE_8x4, 2, 2},
{SUB_MB_TYPE_4x8, 2, 1},
{SUB_MB_TYPE_4x4, 4, 1},
};
} // namespace WelsDec
#endif//WELS_COMMON_BASIS_H__