/*
* Copyright (C) 2008 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/* ---- includes ----------------------------------------------------------- */
#include "b_BasicEm/Functions.h"
#include "b_BasicEm/Math.h"
#include "b_BitFeatureEm/L04Dns2x2Ftr.h"
/* ------------------------------------------------------------------------- */
/* ========================================================================= */
/* */
/* ---- \ghd{ auxiliary functions } ---------------------------------------- */
/* */
/* ========================================================================= */
/* ------------------------------------------------------------------------- */
/* ========================================================================= */
/* */
/* ---- \ghd{ constructor / destructor } ----------------------------------- */
/* */
/* ========================================================================= */
/* ------------------------------------------------------------------------- */
void bbf_L04Dns2x2Ftr_init( struct bbs_Context* cpA,
struct bbf_L04Dns2x2Ftr* ptrA )
{
bbf_Feature_init( cpA, &ptrA->baseE );
ptrA->baseE.typeE = ( uint32 )bbf_FT_L04_DNS_2X2_FTR;
ptrA->baseE.vpActivityE = bbf_L04Dns2x2Ftr_activity;
bbs_UInt32Arr_init( cpA, &ptrA->dataArrE );
ptrA->wShiftE = 0;
ptrA->activityFactorE = 0;
}
/* ------------------------------------------------------------------------- */
void bbf_L04Dns2x2Ftr_exit( struct bbs_Context* cpA,
struct bbf_L04Dns2x2Ftr* ptrA )
{
bbf_Feature_exit( cpA, &ptrA->baseE );
bbs_UInt32Arr_exit( cpA, &ptrA->dataArrE );
ptrA->wShiftE = 0;
ptrA->activityFactorE = 0;
}
/* ------------------------------------------------------------------------- */
/* ========================================================================= */
/* */
/* ---- \ghd{ operators } -------------------------------------------------- */
/* */
/* ========================================================================= */
/* ------------------------------------------------------------------------- */
void bbf_L04Dns2x2Ftr_copy( struct bbs_Context* cpA,
struct bbf_L04Dns2x2Ftr* ptrA,
const struct bbf_L04Dns2x2Ftr* srcPtrA )
{
bbf_Feature_copy( cpA, &ptrA->baseE, &srcPtrA->baseE );
bbs_UInt32Arr_copy( cpA, &ptrA->dataArrE, &srcPtrA->dataArrE );
ptrA->wShiftE = srcPtrA->wShiftE;
ptrA->activityFactorE = srcPtrA->activityFactorE;
}
/* ------------------------------------------------------------------------- */
flag bbf_L04Dns2x2Ftr_equal( struct bbs_Context* cpA,
const struct bbf_L04Dns2x2Ftr* ptrA,
const struct bbf_L04Dns2x2Ftr* srcPtrA )
{
if( !bbf_Feature_equal( cpA, &ptrA->baseE, &srcPtrA->baseE ) ) return FALSE;
if( !bbs_UInt32Arr_equal( cpA, &ptrA->dataArrE, &srcPtrA->dataArrE ) ) return FALSE;
if( ptrA->wShiftE != srcPtrA->wShiftE ) return FALSE;
if( ptrA->activityFactorE != srcPtrA->activityFactorE ) return FALSE;
return TRUE;
}
/* ------------------------------------------------------------------------- */
/* ========================================================================= */
/* */
/* ---- \ghd{ query functions } -------------------------------------------- */
/* */
/* ========================================================================= */
/* ------------------------------------------------------------------------- */
/* ========================================================================= */
/* */
/* ---- \ghd{ modify functions } ------------------------------------------- */
/* */
/* ========================================================================= */
/* ------------------------------------------------------------------------- */
/* ========================================================================= */
/* */
/* ---- \ghd{ I/O } -------------------------------------------------------- */
/* */
/* ========================================================================= */
/* ------------------------------------------------------------------------- */
uint32 bbf_L04Dns2x2Ftr_memSize( struct bbs_Context* cpA,
const struct bbf_L04Dns2x2Ftr* ptrA )
{
uint32 memSizeL = bbs_SIZEOF16( uint32 ) +
bbs_SIZEOF16( uint32 ); /* version */
memSizeL += bbf_Feature_memSize( cpA, &ptrA->baseE );
memSizeL += bbs_UInt32Arr_memSize( cpA, &ptrA->dataArrE );
memSizeL += bbs_SIZEOF16( ptrA->wShiftE );
memSizeL += bbs_SIZEOF16( ptrA->activityFactorE );
return memSizeL;
}
/* ------------------------------------------------------------------------- */
uint32 bbf_L04Dns2x2Ftr_memWrite( struct bbs_Context* cpA,
const struct bbf_L04Dns2x2Ftr* ptrA,
uint16* memPtrA )
{
uint32 memSizeL = bbf_L04Dns2x2Ftr_memSize( cpA, ptrA );
memPtrA += bbs_memWrite32( &memSizeL, memPtrA );
memPtrA += bbs_memWriteUInt32( bbf_L04_DNS_2X2_FTR_VERSION, memPtrA );
memPtrA += bbf_Feature_memWrite( cpA, &ptrA->baseE, memPtrA );
memPtrA += bbs_UInt32Arr_memWrite( cpA, &ptrA->dataArrE, memPtrA );
memPtrA += bbs_memWrite32( &ptrA->wShiftE, memPtrA );
memPtrA += bbs_memWrite32( &ptrA->activityFactorE, memPtrA );
return memSizeL;
}
/* ------------------------------------------------------------------------- */
uint32 bbf_L04Dns2x2Ftr_memRead( struct bbs_Context* cpA,
struct bbf_L04Dns2x2Ftr* ptrA,
const uint16* memPtrA,
struct bbs_MemTbl* mtpA )
{
uint32 memSizeL, versionL;
struct bbs_MemTbl memTblL = *mtpA;
struct bbs_MemSeg* espL = bbs_MemTbl_fastestSegPtr( cpA, &memTblL, 0 );
if( bbs_Context_error( cpA ) ) return 0;
memPtrA += bbs_memRead32( &memSizeL, memPtrA );
memPtrA += bbs_memReadVersion32( cpA, &versionL, bbf_L04_DNS_2X2_FTR_VERSION, memPtrA );
memPtrA += bbf_Feature_memRead( cpA, &ptrA->baseE, memPtrA );
memPtrA += bbs_UInt32Arr_memRead( cpA, &ptrA->dataArrE, memPtrA, espL );
memPtrA += bbs_memRead32( &ptrA->wShiftE, memPtrA );
memPtrA += bbs_memRead32( &ptrA->activityFactorE, memPtrA );
if( memSizeL != bbf_L04Dns2x2Ftr_memSize( cpA, ptrA ) )
{
bbs_ERR0( bbs_ERR_CORRUPT_DATA, "uint32 bbf_L04Dns2x2Ftr_memRead( struct bem_ScanGradientMove* ptrA, const uint16* memPtrA ):\n"
"size mismatch" );
return 0;
}
return memSizeL;
}
/* ------------------------------------------------------------------------- */
/* ========================================================================= */
/* */
/* ---- \ghd{ exec functions } --------------------------------------------- */
/* */
/* ========================================================================= */
/* ------------------------------------------------------------------------- */
int32 bbf_L04Dns2x2Ftr_activity( const struct bbf_Feature* ptrA, const uint32* patchA )
{
const struct bbf_L04Dns2x2Ftr* ptrL = ( struct bbf_L04Dns2x2Ftr* )ptrA;
uint32 wL = ptrL->baseE.patchWidthE - 1;
uint32 hL = ptrL->baseE.patchHeightE - 1;
const uint32* dataPtrL = ptrL->dataArrE.arrPtrE;
uint32 iL;
uint32 borderMaskL = ( ( uint32 )1 << hL ) - 1;
const uint32* patchL = patchA;
int32 sumL = 0;
uint32 bL[ 4 ] = { 0, 0, 0, 0 }; /* bit sum */
for( iL = 0; iL < wL; iL++ )
{
uint32 vL = ( patchL[ 0 ] ^ dataPtrL[ 0 ] ) &
( ( patchL[ 0 ] >> 1 ) ^ dataPtrL[ 1 ] ) &
( ( patchL[ 1 ] ) ^ dataPtrL[ 2 ] ) &
( ( patchL[ 1 ] >> 1 ) ^ dataPtrL[ 3 ] ) & borderMaskL;
{
uint32 vmL;
vmL = vL & dataPtrL[ 4 ];
bL[ 0 ] += bbf_BIT_SUM_32( vmL );
vmL = vL & dataPtrL[ 5 ];
bL[ 1 ] += bbf_BIT_SUM_32( vmL);
vmL = vL & dataPtrL[ 6 ];
bL[ 2 ] += bbf_BIT_SUM_32( vmL );
vmL = vL & dataPtrL[ 7 ];
bL[ 3 ] += bbf_BIT_SUM_32( vmL );
}
sumL += bbf_BIT_SUM_32( vL );
patchL++;
dataPtrL += 8;
}
/* compute final activity */
{
uint32 actL = ( ( bL[ 0 ] << 3 ) + ( bL[ 1 ] << 2 ) + ( bL[ 2 ] << 1 ) + bL[ 3 ] );
return actL * ptrL->activityFactorE + sumL * ptrL->wShiftE;
}
}
/* ------------------------------------------------------------------------- */
/* ========================================================================= */