📄 cxsumpixels.cpp
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#include "_cxcore.h"
/****************************************************************************************\
* Find sum of pixels in the ROI *
\****************************************************************************************/
#define ICV_SUM_COI_CASE( __op__, len, cn ) \
for( ; x <= (len) - 4*(cn); x += 4*(cn) ) \
s0 += __op__(src[x]) + __op__(src[x+(cn)]) + \
__op__(src[x+(cn)*2]) + __op__(src[x+(cn)*3]);\
\
for( ; x < (len); x += (cn) ) \
s0 += __op__(src[x]);
#define ICV_SUM_CASE_C1( __op__, len ) \
ICV_SUM_COI_CASE( __op__, len, 1 )
#define ICV_SUM_CASE_C2( __op__, len ) \
for( ; x <= (len) - 8; x += 8 ) \
{ \
s0 += __op__(src[x]) + __op__(src[x+2]) + \
__op__(src[x+4]) + __op__(src[x+6]); \
s1 += __op__(src[x+1]) + __op__(src[x+3]) + \
__op__(src[x+5]) + __op__(src[x+7]); \
} \
\
for( ; x < (len); x += 2 ) \
{ \
s0 += __op__(src[x]); \
s1 += __op__(src[x+1]); \
}
#define ICV_SUM_CASE_C3( __op__, len ) \
for( ; x <= (len) - 12; x += 12 ) \
{ \
s0 += __op__(src[x]) + __op__(src[x+3]) + \
__op__(src[x+6]) + __op__(src[x+9]); \
s1 += __op__(src[x+1]) + __op__(src[x+4]) + \
__op__(src[x+7]) + __op__(src[x+10]); \
s2 += __op__(src[x+2]) + __op__(src[x+5]) + \
__op__(src[x+8]) + __op__(src[x+11]); \
} \
\
for( ; x < (len); x += 3 ) \
{ \
s0 += __op__(src[x]); \
s1 += __op__(src[x+1]); \
s2 += __op__(src[x+2]); \
}
#define ICV_SUM_CASE_C4( __op__, len ) \
for( ; x <= (len) - 16; x += 16 ) \
{ \
s0 += __op__(src[x]) + __op__(src[x+4]) + \
__op__(src[x+8]) + __op__(src[x+12]); \
s1 += __op__(src[x+1]) + __op__(src[x+5]) + \
__op__(src[x+9]) + __op__(src[x+13]); \
s2 += __op__(src[x+2]) + __op__(src[x+6]) + \
__op__(src[x+10]) + __op__(src[x+14]); \
s3 += __op__(src[x+3]) + __op__(src[x+7]) + \
__op__(src[x+11]) + __op__(src[x+15]); \
} \
\
for( ; x < (len); x += 4 ) \
{ \
s0 += __op__(src[x]); \
s1 += __op__(src[x+1]); \
s2 += __op__(src[x+2]); \
s3 += __op__(src[x+3]); \
}
////////////////////////////////////// entry macros //////////////////////////////////////
#define ICV_SUM_ENTRY_COMMON() \
step /= sizeof(src[0])
#define ICV_SUM_ENTRY_C1( sumtype ) \
sumtype s0 = 0; \
ICV_SUM_ENTRY_COMMON()
#define ICV_SUM_ENTRY_C2( sumtype ) \
sumtype s0 = 0, s1 = 0; \
ICV_SUM_ENTRY_COMMON()
#define ICV_SUM_ENTRY_C3( sumtype ) \
sumtype s0 = 0, s1 = 0, s2 = 0; \
ICV_SUM_ENTRY_COMMON()
#define ICV_SUM_ENTRY_C4( sumtype ) \
sumtype s0 = 0, s1 = 0, s2 = 0, s3 = 0; \
ICV_SUM_ENTRY_COMMON()
#define ICV_SUM_ENTRY_BLOCK_COMMON( block_size ) \
int remaining = block_size; \
ICV_SUM_ENTRY_COMMON()
#define ICV_SUM_ENTRY_BLOCK_C1( sumtype, worktype, block_size ) \
sumtype sum0 = 0; \
worktype s0 = 0; \
ICV_SUM_ENTRY_BLOCK_COMMON( block_size )
#define ICV_SUM_ENTRY_BLOCK_C2( sumtype, worktype, block_size ) \
sumtype sum0 = 0, sum1 = 0; \
worktype s0 = 0, s1 = 0; \
ICV_SUM_ENTRY_BLOCK_COMMON( block_size )
#define ICV_SUM_ENTRY_BLOCK_C3( sumtype, worktype, block_size ) \
sumtype sum0 = 0, sum1 = 0, sum2 = 0; \
worktype s0 = 0, s1 = 0, s2 = 0; \
ICV_SUM_ENTRY_BLOCK_COMMON( block_size )
#define ICV_SUM_ENTRY_BLOCK_C4( sumtype, worktype, block_size ) \
sumtype sum0 = 0, sum1 = 0, sum2 = 0, sum3 = 0; \
worktype s0 = 0, s1 = 0, s2 = 0, s3 = 0; \
ICV_SUM_ENTRY_BLOCK_COMMON( block_size )
/////////////////////////////////////// exit macros //////////////////////////////////////
#define ICV_SUM_EXIT_C1( tmp, sumtype ) \
sum[0] = (sumtype)tmp##0
#define ICV_SUM_EXIT_C2( tmp, sumtype ) \
sum[0] = (sumtype)tmp##0; \
sum[1] = (sumtype)tmp##1;
#define ICV_SUM_EXIT_C3( tmp, sumtype ) \
sum[0] = (sumtype)tmp##0; \
sum[1] = (sumtype)tmp##1; \
sum[2] = (sumtype)tmp##2;
#define ICV_SUM_EXIT_C4( tmp, sumtype ) \
sum[0] = (sumtype)tmp##0; \
sum[1] = (sumtype)tmp##1; \
sum[2] = (sumtype)tmp##2; \
sum[3] = (sumtype)tmp##3;
#define ICV_SUM_EXIT_BLOCK_C1( sumtype ) \
sum0 += s0; \
ICV_SUM_EXIT_C1( sum, sumtype )
#define ICV_SUM_EXIT_BLOCK_C2( sumtype ) \
sum0 += s0; sum1 += s1; \
ICV_SUM_EXIT_C2( sum, sumtype )
#define ICV_SUM_EXIT_BLOCK_C3( sumtype ) \
sum0 += s0; sum1 += s1; \
sum2 += s2; \
ICV_SUM_EXIT_C3( sum, sumtype )
#define ICV_SUM_EXIT_BLOCK_C4( sumtype ) \
sum0 += s0; sum1 += s1; \
sum2 += s2; sum3 += s3; \
ICV_SUM_EXIT_C4( sum, sumtype )
////////////////////////////////////// update macros /////////////////////////////////////
#define ICV_SUM_UPDATE_COMMON( block_size ) \
remaining = block_size
#define ICV_SUM_UPDATE_C1( block_size ) \
ICV_SUM_UPDATE_COMMON( block_size ); \
sum0 += s0; \
s0 = 0
#define ICV_SUM_UPDATE_C2( block_size ) \
ICV_SUM_UPDATE_COMMON( block_size ); \
sum0 += s0; sum1 += s1; \
s0 = s1 = 0
#define ICV_SUM_UPDATE_C3( block_size ) \
ICV_SUM_UPDATE_COMMON( block_size ); \
sum0 += s0; sum1 += s1; sum2 += s2; \
s0 = s1 = s2 = 0
#define ICV_SUM_UPDATE_C4( block_size ) \
ICV_SUM_UPDATE_COMMON( block_size ); \
sum0 += s0; sum1 += s1; \
sum2 += s2; sum3 += s3; \
s0 = s1 = s2 = s3 = 0
#define ICV_DEF_SUM_NOHINT_BLOCK_FUNC_2D( name, flavor, cn, \
__op__, arrtype, sumtype_final, sumtype, worktype, block_size )\
IPCVAPI_IMPL(CvStatus, icv##name##_##flavor##_C##cn##R,( \
const arrtype* src, int step, CvSize size, \
sumtype_final* sum ), (src, step, size, sum) ) \
{ \
ICV_SUM_ENTRY_BLOCK_C##cn(sumtype,worktype,(block_size)*(cn)); \
size.width *= cn; \
\
for( ; size.height--; src += step ) \
{ \
int x = 0; \
while( x < size.width ) \
{ \
int limit = MIN( remaining, size.width - x ); \
remaining -= limit; \
limit += x; \
ICV_SUM_CASE_C##cn( __op__, limit ); \
if( remaining == 0 ) \
{ \
ICV_SUM_UPDATE_C##cn( (block_size)*(cn) ); \
} \
} \
} \
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