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Merge pull request #2213 from kleisauke/cpp-array-double 

C++: add set/get for an array of doubles
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John Cupitt 2021-04-21 20:15:29 +01:00 committed by GitHub
parent 57ab63f9f1 526cf4ec37
commit f5d73170e8
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1 changed files with 57 additions and 0 deletions
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57
cplusplus/include/vips/VImage8.h
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@ -600,6 +600,29 @@ public:
static_cast<int>( value.size() ) );
}
/**
* Set the value of an double array metadata item on an image.
*
* A copy of the array is taken.
*/
void
set( const char *field, double *value, int n )
{
vips_image_set_array_double( this->get_image(), field, value, n );
}
/**
* Set the value of an double array metadata item on an image.
*
* A copy of the array is taken.
*/
void
set( const char *field, std::vector<double> value )
{
vips_image_set_array_double( this->get_image(), field, &value[0],
static_cast<int>( value.size() ) );
}
/**
* Set the value of a double metadata item on an image.
*/
@ -695,6 +718,40 @@ public:
return( vector );
}
/**
* Get the value of a metadata item as an array of doubles. Do not free
* the result.
*
* If the item is not of this type, an exception is thrown.
*/
void
get_array_double( const char *field, double **out, int *n ) const
{
if( vips_image_get_array_double( this->get_image(),
field, out, n ) )
throw( VError() );
}
/**
* Get the value of a metadata item as an array of doubles.
*
* If the item is not of this type, an exception is thrown.
*/
std::vector<double>
get_array_double( const char *field ) const
{
int length;
double *array;
if( vips_image_get_array_double( this->get_image(),
field, &array, &length ) )
throw( VError() );
std::vector<double> vector( array, array + length );
return( vector );
}
/**
* Get the value of a metadata item as a double.
*