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Add unit tests for xGetSAD functions #625

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Nov 21, 2025
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Add unit tests for xGetSAD functions #625

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42 changes: 42 additions & 0 deletions test/vvenc_unit_test/vvenc_unit_test.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -46,6 +46,7 @@ POSSIBILITY OF SUCH DAMAGE.
\brief This vvenclibtest.cpp file contains the main entry point of the test application.
*/

#include <cmath>
#include <iostream>
#include <limits.h>
#include <stddef.h>
Expand Down Expand Up @@ -1258,6 +1259,46 @@ static bool check_fixWeightedSSE( RdCost* ref, RdCost* opt, unsigned num_cases,
return passed;
}

static bool check_SAD( RdCost* ref, RdCost* opt, unsigned num_cases, int width, int height )
{
std::ostringstream sstm;
sstm << "RdCost::m_afpDistortFunc[0][DF_SAD" << width << "] "
<< " w=" << width << " h=" << height;
printf( "Testing %s\n", sstm.str().c_str() );

DimensionGenerator rng;
InputGenerator<Pel> g10{ 10, /*is_signed=*/false };

bool passed = true;
for( unsigned i = 0; i < num_cases; i++ )
{
int org_stride = rng.get( width, g_fastUnitTest ? 256 : 1024 );
int cur_stride = rng.get( width, g_fastUnitTest ? 256 : 1024 );
std::vector<Pel> orgBuf( org_stride * height );
std::vector<Pel> curBuf( cur_stride * height );

DistParam dtParam;
dtParam.org.buf = orgBuf.data();
dtParam.org.stride = org_stride;
dtParam.cur.buf = curBuf.data();
dtParam.cur.stride = cur_stride;
dtParam.org.width = width;
dtParam.org.height = height;
dtParam.bitDepth = 10;
dtParam.subShift = rng.get( 0, 1 );
dtParam.applyWeight = 0; // applyWeight appears to be always zero.

std::generate( orgBuf.begin(), orgBuf.end(), g10 );
std::generate( curBuf.begin(), curBuf.end(), g10 );

const int index = DF_SAD + log2( width );
Distortion sum_ref = ref->m_afpDistortFunc[0][index]( dtParam );
Distortion sum_opt = opt->m_afpDistortFunc[0][index]( dtParam );
passed = compare_value( sstm.str(), sum_ref, sum_opt ) && passed;
}
return passed;
}

static bool check_SADwMask( RdCost* ref, RdCost* opt, unsigned num_cases, int width, int height )
{
std::ostringstream sstm;
Expand Down Expand Up @@ -1323,6 +1364,7 @@ static bool test_RdCost()
{
passed = check_lumaWeightedSSE( &ref, &opt, num_cases, w, h ) && passed;
passed = check_fixWeightedSSE( &ref, &opt, num_cases, w, h ) && passed;
passed = check_SAD( &ref, &opt, num_cases, w, h ) && passed;

if (w >= 8 && h >= 8)
{
Expand Down