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small fixups to autorot

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This commit is contained in:
John Cupitt 2014-10-19 11:20:33 +01:00
parent ad86f45cd9
commit afdf22ac37
2 changed files with 20 additions and 4 deletions
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1
TODO
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@ -1,4 +1,3 @@
- fix up aconv
- more python tests

23
libvips/conversion/autorot.c
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@ -45,6 +45,8 @@ typedef struct _VipsAutorot {
VipsImage *in;
VipsAngle angle;
} VipsAutorot;
typedef VipsConversionClass VipsAutorotClass;
@ -89,9 +91,10 @@ vips_autorot_build( VipsObject *object )
if( VIPS_OBJECT_CLASS( vips_autorot_parent_class )->build( object ) )
return( -1 );
if( vips_rot( autorot->in, &conversion->out,
vips_autorot_get_angle( autorot->in ), NULL ) )
autorot->angle = vips_autorot_get_angle( autorot->in );
if( vips_rot( autorot->in, &conversion->out, autorot->angle, NULL ) )
return( -1 );
(void) vips_image_remove( conversion->out, ORIENTATION );
return( 0 );
}
@ -115,11 +118,18 @@ vips_autorot_class_init( VipsAutorotClass *class )
VIPS_ARGUMENT_REQUIRED_INPUT,
G_STRUCT_OFFSET( VipsAutorot, in ) );
VIPS_ARG_ENUM( class, "angle", 6,
_( "Angle" ),
_( "Angle image was rotated by" ),
VIPS_ARGUMENT_OPTIONAL_OUTPUT,
G_STRUCT_OFFSET( VipsAutorot, angle ),
VIPS_TYPE_ANGLE, VIPS_ANGLE_D0 );
}
static void
vips_autorot_init( VipsAutorot *autorot )
{
autorot->angle = VIPS_ANGLE_D0;
}
/**
@ -128,7 +138,14 @@ vips_autorot_init( VipsAutorot *autorot )
* @out: output image
* @...: %NULL-terminated list of optional named arguments
*
* Look at the exif tags and rotate the image to make it upright.
* Optional arguments:
*
* @angle: output #VipsAngle the image was rotated by
*
* Look at the exif tags and rotate the image to make it upright. The
* orientation tag is removed from @out to prevent accidental double rotation.
*
* Read @angle to find the amount the image was rotated by.
*
* See also: vips_rot().
*