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add vips_array_image_empty()/_append()

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to help bindings without init from array
This commit is contained in:
John Cupitt 2015-10-25 17:15:45 +00:00
parent 36617bd2e4
commit 5160010eda
2 changed files with 60 additions and 0 deletions
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3
libvips/include/vips/image.h
View File

@ -482,6 +482,9 @@ int vips_system( const char *cmd_format, ... )
*/
VipsArrayImage *vips_array_image_new( VipsImage **array, int n );
VipsArrayImage *vips_array_image_newv( int n, ... );
VipsArrayImage *vips_array_image_empty( void );
VipsArrayImage *vips_array_image_append( VipsArrayImage *array,
VipsImage *image );
VipsImage **vips_array_image_get( VipsArrayImage *array, int *n );
VipsImage **vips_value_get_array_image( const GValue *value, int *n );
void vips_value_set_array_image( GValue *value, int n );

57
libvips/iofuncs/type.c
View File

@ -1205,6 +1205,63 @@ vips_array_image_newv( int n, ... )
return( (VipsArrayImage *) area );
}
/**
* vips_array_image_empty:
*
* Make an empty image array.
* Handy with vips_array_image_add() for bindings
* which can't handle object array arguments.
*
* See also: vips_array_image_add().
*
* Returns: (transfer full): A new #VipsArrayImage.
*/
VipsArrayImage *
vips_array_image_empty( void )
{
return( vips_array_image_new( NULL, 0 ) );
}
/**
* vips_array_image_append:
* @array: (transfer none): append to this
* @image: add this
*
* Make a new #VipsArrayImage, one larger than @array, with @image appended
* to the end.
* Handy with vips_array_image_empty() for bindings
* which can't handle object array arguments.
*
* See also: vips_array_image_empty().
*
* Returns: (transfer full): A new #VipsArrayImage.
*/
VipsArrayImage *
vips_array_image_append( VipsArrayImage *array, VipsImage *image )
{
VipsArea *old_area = VIPS_AREA( array );
int n = old_area->n;
VipsArea *new_area;
VipsImage **old_vector;
VipsImage **new_vector;
int i;
new_area = vips_area_new_array_object( n + 1 );
new_area->type = VIPS_TYPE_IMAGE;
old_vector = vips_area_get_data( old_area, NULL, NULL, NULL, NULL );
new_vector = vips_area_get_data( new_area, NULL, NULL, NULL, NULL );
for( i = 0; i < n; i++ ) {
new_vector[i] = (VipsImage *) old_vector[i];
g_object_ref( new_vector[i] );
}
new_vector[i] = image;
g_object_ref( new_vector[i] );
return( (VipsArrayImage *) new_area );
}
/**
* vips_array_image_get:
* @array: the #VipsArrayImage to fetch from