int SDTSRasterReader::GetMinMax( double * pdfMin, double * pdfMax,
double dfNoData )
{
void *pBuffer;
int bFirst = TRUE;
int b32Bit = GetRasterType() == SDTS_RT_FLOAT32;
CPLAssert( GetBlockXSize() == GetXSize() && GetBlockYSize() == 1 );
pBuffer = CPLMalloc(sizeof(float) * GetXSize());
for( int iLine = 0; iLine < GetYSize(); iLine++ )
{
if( !GetBlock( 0, iLine, pBuffer ) )
{
CPLFree( pBuffer );
return FALSE;
}
for( int iPixel = 0; iPixel < GetXSize(); iPixel++ )
{
double dfValue;
if( b32Bit )
dfValue = ((float *) pBuffer)[iPixel];
else
dfValue = ((short *) pBuffer)[iPixel];
if( dfValue != dfNoData )
{
if( bFirst )
{
*pdfMin = *pdfMax = dfValue;
bFirst = FALSE;
}
else
{
*pdfMin = MIN(*pdfMin,dfValue);
*pdfMax = MAX(*pdfMax,dfValue);
}
}
}
}
CPLFree( pBuffer );
return !bFirst;
}
int SDTSRasterReader::GetMinMax( double * pdfMin, double * pdfMax,
double dfNoData )
{
CPLAssert( GetBlockXSize() == GetXSize() && GetBlockYSize() == 1 );
bool bFirst = true;
const bool b32Bit = GetRasterType() == SDTS_RT_FLOAT32;
void *pBuffer = CPLMalloc(sizeof(float) * GetXSize());
for( int iLine = 0; iLine < GetYSize(); iLine++ )
{
if( !GetBlock( 0, iLine, pBuffer ) )
{
CPLFree( pBuffer );
return FALSE;
}
for( int iPixel = 0; iPixel < GetXSize(); iPixel++ )
{
double dfValue;
if( b32Bit )
dfValue = reinterpret_cast<float *>( pBuffer )[iPixel];
else
dfValue = reinterpret_cast<short *>( pBuffer )[iPixel];
if( dfValue != dfNoData )
{
if( bFirst )
{
*pdfMin = dfValue;
*pdfMax = dfValue;
bFirst = false;
}
else
{
*pdfMin = std::min( *pdfMin, dfValue );
*pdfMax = std::max( *pdfMax, dfValue );
}
}
}
}
CPLFree( pBuffer );
return !bFirst;
}
