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# Copyright (C) 2013-2023 Ruby-GNOME Project Team
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
#
# This library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
module Gst
class Loader < GObjectIntrospection::Loader
def initialize(base_module, init_arguments)
super(base_module)
@init_arguments = init_arguments
end
def load
super("Gst")
end
private
def pre_load(repository, namespace)
call_init_function(repository, namespace)
define_value_modules
end
def call_init_function(repository, namespace)
init_check = repository.find(namespace, "init_check")
arguments = [
[$0] + @init_arguments,
]
succeeded, argv, error = init_check.invoke(arguments)
@init_arguments.replace(argv[1..-1])
raise error unless succeeded
end
def define_value_modules
@value_functions_module = define_methods_module(:ValueFunctions)
@value_methods_module = define_methods_module(:ValueMethods)
end
def post_load(repository, namespace)
post_methods_module(@value_functions_module)
post_methods_module(@value_methods_module)
require_extension
require_libraries
self.class.start_callback_dispatch_thread
end
def require_extension
require "gstreamer.so"
end
def require_libraries
require "gst/bin"
require "gst/bus"
require "gst/caps"
require "gst/element"
require "gst/element-factory"
require "gst/plugin-feature"
require "gst/registry"
require "gst/structure"
require "gst/tag-list"
require "gst/type-find-factory"
require "gst/version"
end
def load_function_info(info)
case info.name
when "init"
# ignore
when /\Avalue_/
method_name = $POSTMATCH
load_value_function_info(info, method_name)
else
super
end
end
def load_value_function_info(info, method_name)
value_functions_module = @value_functions_module
define_module_function(info, value_functions_module, method_name)
@value_methods_module.module_eval do
define_method(method_name) do |*arguments, &block|
value_functions_module.send(method_name, self, *arguments, &block)
end
end
end
def load_method_info(info, klass, method_name)
case method_name
when "ref", "unref"
# Ignore
else
super
end
end
RENAME_MAP = {
"uri_protocol_is_valid" => "valid_uri_protocol?",
"uri_protocol_is_supported" => "supported_uri_protocol?",
"uri_is_valid" => "valid_uri?",
"uri_has_protocol" => "uri_has_protocol?",
}
def rubyish_method_name(function_info)
RENAME_MAP[function_info.name] || super
end
UNLOCK_GVL_METHODS = {
"Gst::Element#set_state" => true,
"Gst::Element#get_state" => true,
"Gst::Element#query_state" => true,
"Gst::Element#send_event" => true,
}
def prepare_function_info_lock_gvl(function_info, klass)
super
key = "#{klass}\##{function_info.name}"
return unless UNLOCK_GVL_METHODS.key?(key)
function_info.lock_gvl_default = false
end
end
end
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