add missing gstcontext java mapping, this fixes #648

Closes #669

bindings/java/gen_jni.py

@@ -38,7 +38,7 @@
 from type_registry import TypeRegistry
 from type_registry import TypeTransform
 from type_registry import GirMetaType
-from standard_types import standard_types
+from standard_types import standard_types, GObjectMetaType
 from standard_types import ObjectMetaType
 
  ######   #######  ##    ##  ######  ########
@@ -144,6 +144,10 @@ def transform_to_c(self):
         return TypeTransform()
 
 
+class GstContextDummy(GObjectMetaType(gir_type='GstContext', c_type='OwrGstContext', prefix=None)):
+    pass
+
+
 def remove_ignored_elements(xml_root):
     def remove_elem(path):
         parent = xml_root.find(path + '/..')
@@ -165,6 +169,7 @@ def main(argv = None):
     type_registry.register(standard_types)
     type_registry.register(WindowHandleType)
     type_registry.register(GMainContextDummy)
+    type_registry.register(GstContextDummy)
 
     xml_root = ET.parse(args.gir).getroot()
     remove_ignored_elements(xml_root)
@@ -178,6 +183,9 @@ def main(argv = None):
     for name, source in java_generator.standard_classes.items():
         write_file(source, java_base_dir, name + '.java')
 
+    for name, source in java_generator.external_classes.items():
+        write_file(source, java_base_dir, name + '.java')
+
     for namespace in namespaces:
         classes = java_generator.gen_namespace(namespace)
         java_namespace_dir = java_base_dir + '/' + namespace.symbol_prefix

bindings/java/java_generator.py

@@ -379,6 +379,19 @@ def gen_namespace(namespace):
 
     return {c.name: str(c) for c in all_classes}
 
+external_classes = {
+    'GstContext': str(J.Class(
+        name='GstContext',
+        extends='NativeInstance',
+        visibility='public',
+        package=config.PACKAGE_ROOT,
+        body=[
+            J.Method('public', [], 'GstContext', params=['long pointer'],
+                     body=[J.Call('super', 'new NativePointer(pointer)')],
+                     ),
+        ]
+    )),
+}
 
 standard_classes = {
     'NativeInstance': str(J.Class(