283 lines
6.2 KiB
C++
283 lines
6.2 KiB
C++
/* Test +/-* overloads with every combination of vector, image and double.
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* This isn't a full test suite, look in the Python area for that.
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*
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* compile with:
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*
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* g++ -g -Wall test_overloads.cpp `pkg-config vips-cpp --cflags --libs`
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*
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* run with:
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*
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* valgrind --leak-check=yes ./a.out ~/pics/k2.jpg ~/pics/shark.jpg
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*
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*/
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/*
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#define VIPS_DEBUG
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#define VIPS_DEBUG_VERBOSE
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*/
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#include <stdlib.h>
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#include <vips/vips8>
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using namespace vips;
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bool
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equal_vector( std::vector<double> a, std::vector<double> b )
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{
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for( unsigned int i = 0; i < a.size(); i++ )
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if( fabs( a[i] - b[i] ) > 0.001 ) {
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printf( "vectors differ at %u: should be [", i );
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for( unsigned int i = 0; i < a.size(); i++ ) {
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if( i > 0 )
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printf( ", " );
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printf( "%g", a[i] );
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}
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printf( "], is [" );
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for( unsigned int i = 0; i < a.size(); i++ ) {
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if( i > 0 )
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printf( ", " );
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printf( "%g", a[i] );
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}
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printf( "]\n" );
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return( false );
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}
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return( true );
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}
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bool
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equal_double( double a, double b )
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{
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if( fabs( a - b ) > 0.001 ) {
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printf( "doubles differ: should be %g, is %g\n", a, b );
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return( false );
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}
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return( true );
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}
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/* We can't do this with a template, I think we'd need partially-parameterised
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* template, which is C++11 only.
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*/
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/* Only test a few points and only test uchar: we are just testing the C++
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* overloads, we rely on the python test suite for testing the underlying
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* vips operators.
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*/
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#define TEST_BINARY( OPERATOR ) \
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void \
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test_binary_##OPERATOR( VImage left, VImage right ) \
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{ \
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for( int x = 10; x < 30; x += 10 ) { \
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std::vector<double> p_left = left.getpoint( x, x ); \
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std::vector<double> p_right = right.getpoint( x, x ); \
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std::vector<double> p_result = \
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OPERATOR<std::vector<double>, \
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std::vector<double>, \
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std::vector<double> >(p_left, p_right ); \
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\
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VImage im_result; \
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std::vector<double> p_im_result; \
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\
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/* test: image = image OP image \
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*/ \
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im_result = OPERATOR<VImage, VImage, VImage>( left, right ); \
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p_im_result = im_result.getpoint( x, x ); \
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\
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if( !equal_vector( p_result, p_im_result ) ) { \
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printf( #OPERATOR \
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"(VImage, VImage) failed at (%d, %d)\n", \
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x, x ); \
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abort(); \
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} \
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\
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/* test: image = image OP vec \
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*/ \
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im_result = \
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OPERATOR<VImage, \
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VImage, std::vector<double> >( left, p_right );\
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p_im_result = im_result.getpoint( x, x ); \
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\
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if( !equal_vector( p_result, p_im_result ) ) { \
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printf( #OPERATOR \
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"(VImage, vector) failed at (%d, %d)\n", \
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x, x ); \
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abort(); \
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} \
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\
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/* test: image = vec OP image \
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*/ \
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im_result = \
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OPERATOR<VImage, std::vector<double>, \
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VImage>( p_left, right ); \
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p_im_result = im_result.getpoint( x, x ); \
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\
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if( !equal_vector( p_result, p_im_result ) ) { \
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printf( #OPERATOR \
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"(vector, VImage) failed at (%d, %d)\n", \
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x, x ); \
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abort(); \
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} \
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\
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/* test: image = image OP double \
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*/ \
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for( unsigned int i = 0; i < p_right.size(); i++ ) { \
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im_result = \
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OPERATOR<VImage, \
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VImage, double>( left, p_right[i] ); \
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p_im_result = im_result.getpoint( x, x ); \
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\
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if( !equal_double( p_result[i], p_im_result[i] ) ) { \
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printf( #OPERATOR \
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"(VImage, double) failed at " \
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"(%d, %d)\n", \
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x, x ); \
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abort(); \
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} \
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} \
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\
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/* test: image = double OP image \
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*/ \
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for( unsigned int i = 0; i < p_left.size(); i++ ) { \
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im_result = \
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OPERATOR<VImage, \
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double, VImage>( p_left[i], right ); \
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p_im_result = im_result.getpoint( x, x ); \
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\
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if( !equal_double( p_result[i], p_im_result[i] ) ) { \
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printf( #OPERATOR \
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"(double, VImage) failed at " \
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"(%d, %d)\n", \
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x, x ); \
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abort(); \
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} \
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} \
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} \
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}
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// eg. double = double + double
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// or image = double + image
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template <typename A, typename B, typename C>
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A test_add( B left, C right )
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{
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return( left + right );
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}
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template <typename T>
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std::vector<T> operator+(std::vector<T> &v1, const std::vector<T> &v2)
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{
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std::vector<T> result( v1.size() );
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for( unsigned int i = 0; i < v1.size(); i++ )
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result[i] = v1[i] + v2[i];
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return( result );
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}
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TEST_BINARY( test_add );
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template <typename A, typename B, typename C>
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A test_subtract( B left, C right )
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{
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return( left - right );
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}
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template <typename T>
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std::vector<T> operator-(std::vector<T> &v1, const std::vector<T> &v2)
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{
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std::vector<T> result( v1.size() );
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for( unsigned int i = 0; i < v1.size(); i++ )
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result[i] = v1[i] - v2[i];
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return( result );
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}
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TEST_BINARY( test_subtract );
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template <typename A, typename B, typename C>
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A test_multiply( B left, C right )
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{
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return( left * right );
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}
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template <typename T>
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std::vector<T> operator*(std::vector<T> &v1, const std::vector<T> &v2)
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{
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std::vector<T> result( v1.size() );
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for( unsigned int i = 0; i < v1.size(); i++ )
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result[i] = v1[i] * v2[i];
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return( result );
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}
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TEST_BINARY( test_multiply );
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template <typename A, typename B, typename C>
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A test_divide( B left, C right )
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{
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return( left / right );
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}
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template <typename T>
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std::vector<T> operator/(std::vector<T> &v1, const std::vector<T> &v2)
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{
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std::vector<T> result( v1.size() );
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for( unsigned int i = 0; i < v1.size(); i++ )
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result[i] = v1[i] / v2[i];
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return( result );
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}
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TEST_BINARY( test_divide );
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int
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main( int argc, char **argv )
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{
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GOptionContext *context;
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GOptionGroup *main_group;
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GError *error = NULL;
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if( VIPS_INIT( argv[0] ) )
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vips_error_exit( NULL );
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context = g_option_context_new( "" );
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main_group = g_option_group_new( NULL, NULL, NULL, NULL, NULL );
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g_option_context_set_main_group( context, main_group );
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g_option_context_add_group( context, vips_get_option_group() );
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if( !g_option_context_parse( context, &argc, &argv, &error ) ) {
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if( error ) {
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fprintf( stderr, "%s\n", error->message );
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g_error_free( error );
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}
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vips_error_exit( NULL );
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}
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g_option_context_free( context );
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{
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VImage left = VImage::new_from_file( argv[1] );
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VImage right = VImage::new_from_file( argv[2] );
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test_binary_test_add( left, right );
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test_binary_test_subtract( left, right );
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test_binary_test_multiply( left, right );
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test_binary_test_divide( left, right );
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VImage band_one = left[1];
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std::vector<double> point = left(0, 0);
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}
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vips_shutdown();
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return( 0 );
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}
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