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#!/usr/bin/env python3
import argparse
import os
from string import Template
TEMPLATE = Template('''
#include <gst/gst.h>
$elements_declaration
$typefind_funcs_declaration
$device_providers_declaration
$dynamic_types_declaration
$plugins_declaration
$giomodules_declaration
void
gst_init_static_plugins (void)
{
static gsize initialization_value = 0;
if (g_once_init_enter (&initialization_value)) {
$elements_registration
$typefind_funcs_registration
$device_providers_registration
$dynamic_types_registration
$plugins_registration
$giomodules_registration
g_once_init_leave (&initialization_value, 1);
}
}
''')
# Retrieve the plugin name as it can be a plugin filename
def get_plugin_name(name):
for p in plugins:
if name in p:
return p
return ''
def process_features(features_list, plugins, feature_prefix):
plugins_list = plugins
feature_declaration = []
feature_registration = []
if features_list is not None:
feature_plugins = features_list.split(';')
for plugin in feature_plugins:
split = plugin.split(':')
plugin_name = split[0].strip()
if len(split) == 2:
if (get_plugin_name(plugin_name)) != '':
plugins_list.remove(get_plugin_name(plugin_name))
features = split[1].split(',')
for feature in features:
feature = feature.replace("-", "_")
feature_declaration += ['%s_REGISTER_DECLARE(%s);' % (feature_prefix, feature)]
feature_registration += ['%s_REGISTER(%s, NULL);' % (feature_prefix, feature)]
return (plugins_list, feature_declaration, feature_registration)
if __name__ == "__main__":
parser = argparse.ArgumentParser()
parser.add_argument('-o', dest="output", help="Output file")
parser.add_argument('-p', '--plugins', nargs='?', default='', dest="plugins", help="The list of plugins")
parser.add_argument('-e', '--elements', nargs='?', default='', dest="elements", help="The list of plugin:elements")
parser.add_argument('-t', '--type-finds', nargs='?', default='',
dest="typefindfuncs", help="The list of plugin:typefinds")
parser.add_argument('-d', '--devide-providers', nargs='?', default='',
dest="deviceproviders", help="The list of plugin:deviceproviders")
parser.add_argument('-T', '--dynamic-types', nargs='?', default='',
dest="dynamictypes", help="The list of plugin:dynamictypes")
parser.add_argument('--giomodules', nargs='?', default='',
dest="giomodules", help="The list of GIO modules")
options = parser.parse_args()
if options.output is None:
output_file = 'gstinitstaticplugins.c'
else:
output_file = options.output
enable_staticelements_plugin = 0
elements_declaration = []
elements_registration = []
typefind_funcs_declaration = []
typefind_funcs_registration = []
device_providers_declaration = []
device_providers_registration = []
dynamic_types_declaration = []
dynamic_types_registration = []
plugins_declaration = []
plugins_registration = []
giomodules_declaration = []
giomodules_registration = []
if ',' in options.plugins or ':' in options.plugins:
print("Only ';' is allowed in the list of plugins.")
exit(1)
if options.plugins is None or options.plugins.isspace():
plugins = []
else:
plugins = options.plugins.split(';')
# process the features
(plugins, elements_declaration, elements_registration) = process_features(options.elements, plugins, 'GST_ELEMENT')
(plugins, typefind_funcs_declaration, typefind_funcs_registration) = process_features(
options.typefindfuncs, plugins, 'GST_TYPE_FIND')
(plugins, device_providers_declaration, device_providers_registration) = process_features(
options.deviceproviders, plugins, 'GST_DEVICE_PROVIDER')
(plugins, dynamic_types_declaration, dynamic_types_registration) = process_features(
options.dynamictypes, plugins, 'GST_DYNAMIC_TYPE')
# Enable plugin or elements according to the ';' separated list.
for plugin in plugins:
split = plugin.split(':')
plugin_name = split[0]
if plugin_name == '':
continue
filename = os.path.basename(plugin).strip()
if filename.startswith('libgst') and filename.endswith('.a'):
plugin_name = filename[len('libgst'):-len('.a')]
plugins_registration += ['GST_PLUGIN_STATIC_REGISTER(%s);' % (plugin_name)]
plugins_declaration += ['GST_PLUGIN_STATIC_DECLARE(%s);' % (plugin_name)]
giomodules = options.giomodules.split(';') if options.giomodules else []
for module_name in giomodules:
if module_name.startswith('gio'):
module_name = module_name[3:]
giomodules_declaration.append(f'extern void g_io_{module_name}_load (gpointer data);')
giomodules_registration.append(f'g_io_{module_name}_load (NULL);')
with open(output_file.strip(), "w") as f:
static_elements_plugin = ''
f.write(TEMPLATE.substitute({
'elements_declaration': '\n'.join(elements_declaration),
'elements_registration': '\n '.join(elements_registration),
'typefind_funcs_declaration': '\n'.join(typefind_funcs_declaration),
'typefind_funcs_registration': '\n '.join(typefind_funcs_registration),
'device_providers_declaration': '\n'.join(device_providers_declaration),
'device_providers_registration': '\n '.join(device_providers_registration),
'dynamic_types_declaration': '\n'.join(dynamic_types_declaration),
'dynamic_types_registration': '\n '.join(dynamic_types_registration),
'plugins_declaration': '\n'.join(plugins_declaration),
'plugins_registration': '\n '.join(plugins_registration),
'giomodules_declaration': '\n'.join(giomodules_declaration),
'giomodules_registration': '\n '.join(giomodules_registration),
}))
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