395 lines
8.7 KiB
C++
395 lines
8.7 KiB
C++
/* Test the C++ API.
|
|
*
|
|
* This isn't a full test suite, look in the Python area for that. This is
|
|
* just supposed to check that the C++ binding is working.
|
|
*
|
|
* compile with:
|
|
*
|
|
* g++ -g -Wall test.cpp `pkg-config vips-cpp --cflags --libs`
|
|
*
|
|
* run with:
|
|
*
|
|
* VIPS_LEAK=1 ./a.out ~/pics/k2.jpg ~/pics/shark.jpg
|
|
* valgrind --leak-check=yes ./a.out ~/pics/k2.jpg ~/pics/shark.jpg
|
|
* rm x.tif
|
|
*
|
|
*/
|
|
|
|
/*
|
|
#define VIPS_DEBUG
|
|
#define VIPS_DEBUG_VERBOSE
|
|
*/
|
|
|
|
#include <stdlib.h>
|
|
|
|
#include <vips/vips8>
|
|
|
|
using namespace vips;
|
|
|
|
bool
|
|
equal_vector( std::vector<double> a, std::vector<double> b )
|
|
{
|
|
for( unsigned int i = 0; i < a.size(); i++ )
|
|
if( fabs( a[i] - b[i] ) > 0.001 ) {
|
|
printf( "vectors differ at %u: should be [", i );
|
|
for( unsigned int i = 0; i < a.size(); i++ ) {
|
|
if( i > 0 )
|
|
printf( ", " );
|
|
printf( "%g", a[i] );
|
|
}
|
|
printf( "], is [" );
|
|
for( unsigned int i = 0; i < a.size(); i++ ) {
|
|
if( i > 0 )
|
|
printf( ", " );
|
|
printf( "%g", a[i] );
|
|
}
|
|
printf( "]\n" );
|
|
|
|
return( false );
|
|
}
|
|
|
|
return( true );
|
|
}
|
|
|
|
bool
|
|
equal_double( double a, double b )
|
|
{
|
|
if( fabs( a - b ) > 0.001 ) {
|
|
printf( "doubles differ: should be %g, is %g\n", a, b );
|
|
return( false );
|
|
}
|
|
|
|
return( true );
|
|
}
|
|
|
|
/* We can't do this with a template, I think we'd need partially-parameterised
|
|
* template, which is C++11 only.
|
|
*/
|
|
|
|
/* Only test a few points and only test uchar: we are just testing the C++
|
|
* overloads, we rely on the python test suite for testing the underlying
|
|
* vips operators.
|
|
*/
|
|
#define TEST_BINARY( OPERATOR ) \
|
|
void \
|
|
test_binary_##OPERATOR( VImage left, VImage right ) \
|
|
{ \
|
|
for( int x = 10; x < 30; x += 10 ) { \
|
|
std::vector<double> p_left = left.getpoint( x, x ); \
|
|
std::vector<double> p_right = right.getpoint( x, x ); \
|
|
std::vector<double> p_result = \
|
|
OPERATOR<std::vector<double>, \
|
|
std::vector<double>, \
|
|
std::vector<double> >(p_left, p_right ); \
|
|
\
|
|
VImage im_result; \
|
|
std::vector<double> p_im_result; \
|
|
\
|
|
/* test: image = image OP image \
|
|
*/ \
|
|
im_result = OPERATOR<VImage, VImage, VImage>( left, right ); \
|
|
p_im_result = im_result.getpoint( x, x ); \
|
|
\
|
|
if( !equal_vector( p_result, p_im_result ) ) { \
|
|
printf( #OPERATOR \
|
|
"(VImage, VImage) failed at (%d, %d)\n", \
|
|
x, x ); \
|
|
abort(); \
|
|
} \
|
|
\
|
|
/* test: image = image OP vec \
|
|
*/ \
|
|
im_result = \
|
|
OPERATOR<VImage, \
|
|
VImage, std::vector<double> >( left, p_right );\
|
|
p_im_result = im_result.getpoint( x, x ); \
|
|
\
|
|
if( !equal_vector( p_result, p_im_result ) ) { \
|
|
printf( #OPERATOR \
|
|
"(VImage, vector) failed at (%d, %d)\n", \
|
|
x, x ); \
|
|
abort(); \
|
|
} \
|
|
\
|
|
/* test: image = vec OP image \
|
|
*/ \
|
|
im_result = \
|
|
OPERATOR<VImage, std::vector<double>, \
|
|
VImage>( p_left, right ); \
|
|
p_im_result = im_result.getpoint( x, x ); \
|
|
\
|
|
if( !equal_vector( p_result, p_im_result ) ) { \
|
|
printf( #OPERATOR \
|
|
"(vector, VImage) failed at (%d, %d)\n", \
|
|
x, x ); \
|
|
abort(); \
|
|
} \
|
|
\
|
|
/* test: image = image OP double \
|
|
*/ \
|
|
for( unsigned int i = 0; i < p_right.size(); i++ ) { \
|
|
im_result = \
|
|
OPERATOR<VImage, \
|
|
VImage, double>( left, p_right[i] ); \
|
|
p_im_result = im_result.getpoint( x, x ); \
|
|
\
|
|
if( !equal_double( p_result[i], p_im_result[i] ) ) { \
|
|
printf( #OPERATOR \
|
|
"(VImage, double) failed at " \
|
|
"(%d, %d)\n", \
|
|
x, x ); \
|
|
abort(); \
|
|
} \
|
|
} \
|
|
\
|
|
/* test: image = double OP image \
|
|
*/ \
|
|
for( unsigned int i = 0; i < p_left.size(); i++ ) { \
|
|
im_result = \
|
|
OPERATOR<VImage, \
|
|
double, VImage>( p_left[i], right ); \
|
|
p_im_result = im_result.getpoint( x, x ); \
|
|
\
|
|
if( !equal_double( p_result[i], p_im_result[i] ) ) { \
|
|
printf( #OPERATOR \
|
|
"(double, VImage) failed at " \
|
|
"(%d, %d)\n", \
|
|
x, x ); \
|
|
abort(); \
|
|
} \
|
|
} \
|
|
} \
|
|
}
|
|
|
|
// eg. double = double + double
|
|
// or image = double + image
|
|
template <typename A, typename B, typename C>
|
|
A test_add( B left, C right )
|
|
{
|
|
return( left + right );
|
|
}
|
|
|
|
template <typename T>
|
|
std::vector<T> operator+(std::vector<T> &v1, const std::vector<T> &v2)
|
|
{
|
|
std::vector<T> result( v1.size() );
|
|
|
|
for( unsigned int i = 0; i < v1.size(); i++ )
|
|
result[i] = v1[i] + v2[i];
|
|
|
|
return( result );
|
|
}
|
|
|
|
TEST_BINARY( test_add );
|
|
|
|
template <typename A, typename B, typename C>
|
|
A test_subtract( B left, C right )
|
|
{
|
|
return( left - right );
|
|
}
|
|
|
|
template <typename T>
|
|
std::vector<T> operator-(std::vector<T> &v1, const std::vector<T> &v2)
|
|
{
|
|
std::vector<T> result( v1.size() );
|
|
|
|
for( unsigned int i = 0; i < v1.size(); i++ )
|
|
result[i] = v1[i] - v2[i];
|
|
|
|
return( result );
|
|
}
|
|
|
|
TEST_BINARY( test_subtract );
|
|
|
|
template <typename A, typename B, typename C>
|
|
A test_multiply( B left, C right )
|
|
{
|
|
return( left * right );
|
|
}
|
|
|
|
template <typename T>
|
|
std::vector<T> operator*(std::vector<T> &v1, const std::vector<T> &v2)
|
|
{
|
|
std::vector<T> result( v1.size() );
|
|
|
|
for( unsigned int i = 0; i < v1.size(); i++ )
|
|
result[i] = v1[i] * v2[i];
|
|
|
|
return( result );
|
|
}
|
|
|
|
TEST_BINARY( test_multiply );
|
|
|
|
template <typename A, typename B, typename C>
|
|
A test_divide( B left, C right )
|
|
{
|
|
return( left / right );
|
|
}
|
|
|
|
template <typename T>
|
|
std::vector<T> operator/(std::vector<T> &v1, const std::vector<T> &v2)
|
|
{
|
|
std::vector<T> result( v1.size() );
|
|
|
|
for( unsigned int i = 0; i < v1.size(); i++ )
|
|
result[i] = v1[i] / v2[i];
|
|
|
|
return( result );
|
|
}
|
|
|
|
TEST_BINARY( test_divide );
|
|
|
|
int
|
|
main( int argc, char **argv )
|
|
{
|
|
if( VIPS_INIT( argv[0] ) )
|
|
vips_error_exit( NULL );
|
|
|
|
VImage left = VImage::new_from_file( argv[1] );
|
|
VImage right = VImage::new_from_file( argv[2] );
|
|
|
|
{
|
|
printf( "testing constant args ...\n" );
|
|
|
|
double a[] = { 1.0, 2.0, 3.0 };
|
|
double b[] = { 4.0, 5.0, 6.0 };
|
|
|
|
std::vector<double> avec( a, a + VIPS_NUMBER( a ) );
|
|
std::vector<double> bvec( b, b + VIPS_NUMBER( b ) );
|
|
|
|
VImage out = left.linear( avec, bvec );
|
|
|
|
out.write_to_file( "x.tif" );
|
|
}
|
|
|
|
{
|
|
printf( "testing operator overloads ...\n" );
|
|
test_binary_test_add( left, right );
|
|
test_binary_test_subtract( left, right );
|
|
test_binary_test_multiply( left, right );
|
|
test_binary_test_divide( left, right );
|
|
|
|
VImage band_one = left[1];
|
|
|
|
std::vector<double> point = left(0, 0);
|
|
}
|
|
|
|
{
|
|
// write to a formatted memory buffer
|
|
printf( "testing formatted memory write ...\n" );
|
|
|
|
size_t size;
|
|
void *buf;
|
|
left.write_to_buffer( ".png", &buf, &size );
|
|
printf( "written to memory %p in png format, %zu bytes\n", buf, size );
|
|
|
|
// load from the formatted memory area
|
|
VImage im = VImage::new_from_buffer( buf, size, "" );
|
|
printf( "loaded from memory, %d x %d pixel image\n",
|
|
im.width(), im.height() );
|
|
|
|
// write back to a file
|
|
im.write_to_file( "x.tif" );
|
|
printf( "written back to x.tif\n" );
|
|
|
|
g_free( buf );
|
|
}
|
|
|
|
{
|
|
// write to a formatted AVIF memory buffer
|
|
printf( "testing formatted AVIF memory write ...\n" );
|
|
|
|
if( vips_type_find("VipsOperation", "avifsave_target") != 0 ) {
|
|
size_t size;
|
|
void *buf;
|
|
|
|
// speed-up test by setting @effort to 0
|
|
left.write_to_buffer( ".avif", &buf, &size,
|
|
VImage::option()->set( "effort", 0 ) );
|
|
printf( "written to memory %p in AVIF format, %zu bytes\n", buf, size );
|
|
|
|
// load from the formatted memory area
|
|
VImage im = VImage::new_from_buffer( buf, size, "" );
|
|
printf( "loaded from memory, %d x %d pixel %s image\n",
|
|
im.width(), im.height(), im.get_string("heif-compression") );
|
|
|
|
g_free( buf );
|
|
}
|
|
else {
|
|
printf( "skipped, not compiled against libheif\n" );
|
|
}
|
|
}
|
|
|
|
{
|
|
// write to a vanilla memory buffer
|
|
printf( "testing memory array write ...\n" );
|
|
|
|
size_t size;
|
|
void *buf;
|
|
buf = left.write_to_memory( &size );
|
|
printf( "written to memory %p as an array, %zu bytes\n", buf, size );
|
|
|
|
// load from the memory array
|
|
VImage im = VImage::new_from_memory( buf, size,
|
|
left.width(), left.height(), left.bands(), left.format() );
|
|
printf( "loaded from memory array, %d x %d pixel image\n",
|
|
im.width(), im.height() );
|
|
|
|
// write back to a file
|
|
im.write_to_file( "x.tif" );
|
|
printf( "written back to x.tif\n" );
|
|
|
|
g_free( buf );
|
|
}
|
|
|
|
{
|
|
printf( "testing double return from operation ...\n" );
|
|
|
|
double avg = left.avg();
|
|
|
|
printf( "left.avg() = %g\n", avg );
|
|
}
|
|
|
|
{
|
|
printf( "testing optional enum args ...\n" );
|
|
|
|
VImage out = left.embed( 10, 10, 1000, 1000,
|
|
VImage::option()->set( "extend", "copy" ) );
|
|
|
|
out.write_to_file( "x.tif" );
|
|
}
|
|
|
|
{
|
|
printf( "testing multiple image return ...\n" );
|
|
|
|
VImage rows;
|
|
VImage cols = left.profile( &rows );
|
|
rows.write_to_file( "x.tif" );
|
|
cols.write_to_file( "x.tif" );
|
|
}
|
|
|
|
{
|
|
printf( "testing interpolators ...\n" );
|
|
|
|
VInterpolate interp = VInterpolate::new_from_name( "nohalo" );
|
|
|
|
VImage out;
|
|
|
|
out = left.resize( 0.2,
|
|
VImage::option()->set( "interpolate", interp ) );
|
|
out.write_to_file( "x.tif" );
|
|
}
|
|
|
|
{
|
|
printf( "testing new_from_image() ...\n" );
|
|
|
|
VImage out = left.new_from_image( 128 );
|
|
|
|
out.write_to_file( "x.tif" );
|
|
}
|
|
|
|
printf( "all tests passed\n" );
|
|
|
|
return( 0 );
|
|
}
|