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authorDavid Robillard <d@drobilla.net>2019-10-19 19:51:30 +0200
committerDavid Robillard <d@drobilla.net>2019-10-19 19:54:13 +0200
commit9e10cf64bde54a623c0715e644683382a70b681e (patch)
treee3e581b4d9cca5ca8ca1ab6acb3bd541eec9b4d4 /bindings/python
parent8ac46250fc5dfe2cbded8691ee26a2f13087b8d2 (diff)
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Fix various issues with Python bindings
Diffstat (limited to 'bindings/python')
-rw-r--r--bindings/python/lilv.py99
1 files changed, 76 insertions, 23 deletions
diff --git a/bindings/python/lilv.py b/bindings/python/lilv.py
index 024bfe7..68fe9fa 100644
--- a/bindings/python/lilv.py
+++ b/bindings/python/lilv.py
@@ -1,17 +1,13 @@
"""Lilv Python interface"""
__author__ = "David Robillard"
-__copyright__ = "Copyright 2016 David Robillard"
+__copyright__ = "Copyright 2016-2019 David Robillard"
__license__ = "ISC"
__version__ = "0.22.1"
__maintainer__ = "David Robillard"
__email__ = "d@drobilla.net"
__status__ = "Production"
-import ctypes
-import os
-import sys
-
from ctypes import Structure, CDLL, POINTER, CFUNCTYPE
from ctypes import c_bool, c_double, c_float, c_int, c_size_t, c_uint, c_uint32
from ctypes import c_char, c_char_p, c_void_p
@@ -34,6 +30,8 @@ def _as_uri(obj):
if type(obj) in [Plugin, PluginClass, UI]:
return obj.get_uri()
else:
+ assert type(obj) == Node
+ assert obj.node
return obj
free = _lib.lilv_free
@@ -239,7 +237,16 @@ class LV2_URID_Unmap(Structure):
class Plugin(Structure):
"""LV2 Plugin."""
+
+ @classmethod
+ def wrap(cls, world, plugin):
+ return Plugin(world, plugin) if world is not None and plugin else None
+
def __init__(self, world, plugin):
+ assert isinstance(world, World)
+ assert type(plugin) == POINTER(Plugin)
+ assert plugin
+
self.world = world
self.plugin = plugin
@@ -437,6 +444,7 @@ class Plugin(Structure):
def get_port_by_index(self, index):
"""Get a port on `plugin` by `index`."""
+ assert type(index) == int
return Port.wrap(self, plugin_get_port_by_index(self.plugin, index))
def get_port_by_symbol(self, symbol):
@@ -445,8 +453,12 @@ class Plugin(Structure):
Note this function is slower than get_port_by_index(),
especially on plugins with a very large number of ports.
"""
+ assert type(symbol) == str or isinstance(symbol, Node)
if type(symbol) == str:
symbol = self.world.new_string(symbol)
+
+ assert isinstance(symbol, Node)
+ assert symbol.node is not None
return Port.wrap(self, plugin_get_port_by_symbol(self.plugin, symbol.node))
def get_port_by_designation(self, port_class, designation):
@@ -522,6 +534,9 @@ class Plugin(Structure):
class PluginClass(Structure):
"""Plugin Class (type/category)."""
def __init__(self, plugin_class):
+ assert type(plugin_class) == POINTER(PluginClass)
+ assert plugin_class
+
self.plugin_class = plugin_class
def __str__(self):
@@ -550,9 +565,16 @@ class Port(Structure):
"""Port on a Plugin."""
@classmethod
def wrap(cls, plugin, port):
- return Port(plugin, port) if plugin and port else None
+ if plugin is not None and port:
+ return Port(plugin, port)
+
+ return None
def __init__(self, plugin, port):
+ assert isinstance(plugin, Plugin)
+ assert type(port) == POINTER(Port)
+ assert port
+
self.plugin = plugin
self.port = port
@@ -642,9 +664,7 @@ class Port(Structure):
pmin = POINTER(Node)()
pmax = POINTER(Node)()
port_get_range(self.plugin.plugin, self.port, byref(pdef), byref(pmin), byref(pmax))
- return (Node(pdef.contents) if pdef else None,
- Node(pmin.contents) if pmin else None,
- Node(pmax.contents) if pmax else None)
+ return (Node.wrap(pdef), Node.wrap(pmin), Node.wrap(pmax))
def get_scale_points(self):
"""Get the scale points (enumeration values) of a port.
@@ -658,6 +678,9 @@ class Port(Structure):
class ScalePoint(Structure):
"""Scale point (detent)."""
def __init__(self, point):
+ assert type(point) == POINTER(ScalePoint)
+ assert point
+
self.point = point
def get_label(self):
@@ -671,13 +694,18 @@ class ScalePoint(Structure):
class UI(Structure):
"""Plugin UI."""
def __init__(self, ui):
+ assert type(ui) == POINTER(UI)
+ assert ui
self.ui = ui
def __str__(self):
return str(self.get_uri())
def __eq__(self, other):
- return self.get_uri() == _as_uri(other)
+ if type(other) == str or type(other) == Node:
+ return self.get_uri() == other
+
+ return self.get_uri() == other.get_uri()
def get_uri(self):
"""Get the URI of a Plugin UI."""
@@ -718,20 +746,29 @@ class Node(Structure):
"""
@classmethod
def wrap(cls, node):
- return Node(node) if node else None
+ assert (node is None) or (type(node) == POINTER(Node))
+ if node:
+ return Node(node_duplicate(node))
+
+ return None
def __init__(self, node):
+ assert type(node) == POINTER(Node)
+ assert node
self.node = node
def __del__(self):
- if hasattr(self, 'node'):
- node_free(self.node)
+ node_free(self.node)
def __eq__(self, other):
+ if other is None:
+ return False
+
otype = type(other)
- if otype in [str, int, float]:
- return otype(self) == other
- return node_equals(self.node, other.node)
+ if otype == Node:
+ return node_equals(self.node, other.node)
+
+ return otype(self) == other
def __ne__(self, other):
return not node_equals(self.node, other.node)
@@ -856,8 +893,11 @@ class Collection(Structure):
class Plugins(Collection):
"""Collection of plugins."""
def __init__(self, world, collection):
+ assert type(collection) == POINTER(Plugins)
+ assert collection
+
def constructor(plugin):
- return Plugin(world, plugin)
+ return Plugin.wrap(world, plugin)
super(Plugins, self).__init__(collection, plugins_begin, constructor, plugins_get, plugins_next, plugins_is_end)
self.world = world
@@ -874,12 +914,13 @@ class Plugins(Collection):
return self.get_by_uri(key)
def get_by_uri(self, uri):
- plugin = plugins_get_by_uri(self.collection, uri.node)
- return Plugin(self.world, plugin) if plugin else None
+ return Plugin.wrap(self.world, plugins_get_by_uri(self.collection, uri.node))
class PluginClasses(Collection):
"""Collection of plugin classes."""
def __init__(self, collection):
+ assert type(collection) == POINTER(PluginClasses)
+ assert collection
super(PluginClasses, self).__init__(
collection, plugin_classes_begin, PluginClass,
plugin_classes_get, plugin_classes_next, plugin_classes_is_end)
@@ -902,6 +943,8 @@ class PluginClasses(Collection):
class ScalePoints(Collection):
"""Collection of scale points."""
def __init__(self, collection):
+ assert type(collection) == POINTER(ScalePoints)
+ assert collection
super(ScalePoints, self).__init__(
collection, scale_points_begin, ScalePoint,
scale_points_get, scale_points_next, scale_points_is_end)
@@ -912,6 +955,8 @@ class ScalePoints(Collection):
class UIs(Collection):
"""Collection of plugin UIs."""
def __init__(self, collection):
+ assert type(collection) == POINTER(UIs)
+ assert collection
super(UIs, self).__init__(collection, uis_begin, UI,
uis_get, uis_next, uis_is_end)
@@ -937,6 +982,7 @@ class Nodes(Collection):
return Node(node_duplicate(node))
def __init__(self, collection):
+ assert type(collection) == POINTER(Nodes)
super(Nodes, self).__init__(collection, nodes_begin, Nodes.constructor,
nodes_get, nodes_next, nodes_is_end)
@@ -961,6 +1007,9 @@ class Namespace():
http://example.org/foo
"""
def __init__(self, world, prefix):
+ assert isinstance(world, World)
+ assert type(prefix) == str
+
self.world = world
self.prefix = prefix
@@ -1084,7 +1133,9 @@ class World(Structure):
All accessible data files linked to `resource` with rdfs:seeAlso will be
loaded into the world model.
"""
- return world_load_resource(self.world, _as_uri(resource).node)
+ uri = _as_uri(resource)
+ ret = world_load_resource(self.world, uri.node)
+ return ret
def unload_resource(self, resource):
"""Unload all the data associated with the given `resource`.
@@ -1094,7 +1145,9 @@ class World(Structure):
This unloads all data loaded by a previous call to
load_resource() with the given `resource`.
"""
- return world_unload_resource(self.world, _as_uri(resource).node)
+ uri = _as_uri(resource)
+ ret = world_unload_resource(self.world, uri.node)
+ return ret
def get_plugin_class(self):
"""Get the parent of all other plugin classes, lv2:Plugin."""
@@ -1195,7 +1248,7 @@ class Instance(Structure):
Returned string is shared and must not be modified or deleted.
"""
- return self.get_descriptor().URI
+ return self.get_descriptor().URI.decode('utf-8')
def connect_port(self, port_index, data):
"""Connect a port to a data location.
@@ -1251,7 +1304,7 @@ class Instance(Structure):
extension, though in all cases it is shared and must not be deleted.
"""
if self.get_descriptor().extension_data:
- return self.get_descriptor().extension_data(str(uri))
+ return self.get_descriptor().extension_data(str(uri).encode('utf-8'))
def get_descriptor(self):
"""Get the LV2_Descriptor of the plugin instance.