[python] add jackctl.py temporarily

git-svn-id: svn+ssh://jackaudio.org/trunk/jack@4424 0c269be4-1314-0410-8aa9-9f06e86f4224

jackctl.py

@@ -0,0 +1,209 @@
+
+from ctypes import *
+
+libj = cdll.LoadLibrary( "libjack.so" )
+libjs = cdll.LoadLibrary( "libjackserver.so" )
+
+
+class jackctl_parameter_value( Union ):
+    _fields_ = [ ( "ui", c_uint ),
+                 ( "i",  c_int  ),
+                 ( "c",  c_char ),
+                 ( "ss", c_char * 128 ),
+                 ( "b",   c_bool ) ]
+
+    def get_str( self ):
+        return buffer(self.ss)
+
+    def set_str( self, sss ):
+        self.ss = sss
+
+    str = property( get_str, set_str )
+
+class jackctl_server_t( Structure ):
+    pass
+
+class jackctl_driver_t( Structure ):
+    pass
+
+class jackctl_internal_t( Structure ):
+    pass
+
+class jackctl_parameter_t( Structure ):
+    pass
+
+class JSList( Structure ):
+    pass
+
+JSList._fields_ = [ ("data", c_void_p), ("next", POINTER(JSList)) ]
+
+class JSIter:
+    def __init__(self, ptr, typ=c_void_p):
+        self.ptr = ptr
+	self.typ = typ
+
+    def __iter__(self):
+        return self
+
+    def next( self ):
+        if not self.ptr:
+            raise StopIteration
+
+        retval = self.ptr.contents.data
+        self.ptr = self.ptr.contents.next
+
+	return cast( retval, self.typ )
+
+
+jackctl_server_start = libjs.jackctl_server_start
+jackctl_server_start.argtypes = [ POINTER(jackctl_server_t), POINTER(jackctl_driver_t) ]
+jackctl_server_start.restype  = c_bool
+
+jackctl_server_stop = libjs.jackctl_server_stop
+jackctl_server_stop.argtypes = [ POINTER(jackctl_server_t) ]
+jackctl_server_stop.restype  = c_bool
+
+jackctl_server_create = libjs.jackctl_server_create
+jackctl_server_create.argtypes = [ POINTER(jackctl_server_t), POINTER(jackctl_driver_t) ]
+jackctl_server_create.restype  = POINTER(jackctl_server_t)
+
+jackctl_server_get_drivers_list = libjs.jackctl_server_get_drivers_list
+jackctl_server_get_drivers_list.argtypes = [ POINTER(jackctl_server_t) ]
+jackctl_server_get_drivers_list.restype  = POINTER(JSList)
+
+jackctl_server_get_parameters = libjs.jackctl_server_get_parameters
+jackctl_server_get_parameters.argtypes = [ POINTER(jackctl_server_t) ]
+jackctl_server_get_parameters.restype  = POINTER(JSList)
+
+jackctl_driver_get_parameters = libjs.jackctl_driver_get_parameters
+jackctl_driver_get_parameters.argtypes = [ POINTER(jackctl_driver_t) ]
+jackctl_driver_get_parameters.restype  = POINTER(JSList)
+
+jackctl_driver_get_name = libjs.jackctl_driver_get_name
+jackctl_driver_get_name.argtypes = [ POINTER(jackctl_driver_t) ]
+jackctl_driver_get_name.restype  = c_char_p
+
+jackctl_parameter_get_name = libjs.jackctl_parameter_get_name
+jackctl_parameter_get_name.argtypes = [ POINTER(jackctl_parameter_t) ]
+jackctl_parameter_get_name.restype  = c_char_p
+
+jackctl_parameter_get_short_description = libjs.jackctl_parameter_get_short_description
+jackctl_parameter_get_short_description.argtypes = [ POINTER(jackctl_parameter_t) ]
+jackctl_parameter_get_short_description.restype  = c_char_p
+
+jackctl_parameter_get_type = libjs.jackctl_parameter_get_type
+jackctl_parameter_get_type.argtypes = [ POINTER(jackctl_parameter_t) ]
+jackctl_parameter_get_type.restype  = c_uint
+
+jackctl_parameter_set_value = libjs.jackctl_parameter_set_value
+jackctl_parameter_set_value.argtypes = [ POINTER(jackctl_parameter_t), POINTER(jackctl_parameter_value) ]
+jackctl_parameter_set_value.restype  = c_bool
+
+jackctl_parameter_get_value = libjs.jackctl_parameter_get_value
+jackctl_parameter_get_value.argtypes = [ POINTER(jackctl_parameter_t) ]
+jackctl_parameter_get_value.restype  = jackctl_parameter_value
+
+jackctl_server_switch_master = libjs.jackctl_server_switch_master
+jackctl_server_switch_master.argtypes = [ POINTER(jackctl_server_t), POINTER(jackctl_driver_t) ]
+jackctl_server_switch_master.restype  = c_bool
+
+
+class Parameter(object):
+    def __init__( self, param_ptr ):
+	self.param_ptr = param_ptr
+	self.param_type = jackctl_parameter_get_type( self.param_ptr )
+
+    def get_short_desc( self ):
+	return jackctl_parameter_get_short_description( self.param_ptr )
+
+    short_desc = property( get_short_desc )
+
+    def get_name( self ):
+	return jackctl_parameter_get_name( self.param_ptr )
+
+    name = property( get_name )
+
+    def set_value( self, val ):
+	param_v = jackctl_parameter_value()
+	if self.param_type == 1:
+	    # int
+	    assert( type(val) == int )
+	    param_v.i = val
+	elif self.param_type == 2:
+	    # uint
+	    assert( type(val) == int )
+	    param_v.ui = val
+	elif self.param_type == 3:
+	    # char
+	    assert( (type(val) == str) and len(val)==1 )
+	    param_v.c = val
+	elif self.param_type == 4:
+	    # string
+	    assert( type(val) == str )
+	    param_v.str = val
+	elif self.param_type == 5:
+	    # bool
+	    assert( type(val) == bool )
+	    param_v.b = val
+	    
+	jackctl_parameter_set_value( self.param_ptr, pointer(param_v) )
+
+    def get_value( self ):
+	param_v = jackctl_parameter_get_value( self.param_ptr )
+
+	if self.param_type == 1:
+	    # int
+	    return param_v.i
+	elif self.param_type == 2:
+	    # uint
+	    return param_v.ui
+	elif self.param_type == 3:
+	    # char
+	    return param_v.c
+	elif self.param_type == 4:
+	    # string
+	    return param_v.ss.value
+	elif self.param_type == 5:
+	    # bool
+	    return param_v.b
+
+    value = property( get_value, set_value )
+
+class Driver(object):
+    def __init__( self, drv_ptr ):
+	self.drv_ptr = drv_ptr
+
+	params_jslist = jackctl_driver_get_parameters( self.drv_ptr )
+
+	self.params = {}
+	for i in JSIter( params_jslist, POINTER(jackctl_parameter_t) ):
+	    self.params[ jackctl_parameter_get_name( i ) ] = Parameter(i)
+
+
+class Server(object):
+    def __init__( self ):
+	self.srv_ptr = jackctl_server_create( None, None )
+
+	driver_jslist = jackctl_server_get_drivers_list( self.srv_ptr )
+
+	self.drivers = {}
+	for i in JSIter( driver_jslist, POINTER(jackctl_driver_t) ):
+	    self.drivers[ jackctl_driver_get_name( i ) ] = Driver(i)
+
+	params_jslist = jackctl_server_get_parameters( self.srv_ptr )
+
+	self.params = {}
+	for i in JSIter( params_jslist, POINTER(jackctl_parameter_t) ):
+	    self.params[ jackctl_parameter_get_name( i ) ] = Parameter(i)
+
+    def __del__( self ):
+	pass
+
+    def start( self, driver ):
+	return jackctl_server_start( self.srv_ptr, driver.drv_ptr )
+
+    def switch_master( self, driver ):
+	return jackctl_server_switch_master( self.srv_ptr, driver.drv_ptr )
+
+    def stop( self ):
+	return jackctl_server_stop( self.srv_ptr )