[babeltrace.git] / src / bindings / python / bt2 / bt2 / native_bt_graph.i.h

/*
 * The MIT License (MIT)
 *
 * Copyright (c) 2017 Philippe Proulx <pproulx@efficios.com>
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */

static
void graph_listener_removed(void *py_callable)
{
	BT_ASSERT(py_callable);
	Py_DECREF(py_callable);
}

static bt_graph_listener_func_status port_added_listener(
	const void *component,
	swig_type_info *component_swig_type,
	bt_component_class_type component_class_type,
	const void *port,
	swig_type_info *port_swig_type,
	bt_port_type port_type,
	void *py_callable)
{
	PyObject *py_component_ptr = NULL;
	PyObject *py_port_ptr = NULL;
	PyObject *py_res = NULL;
	bt_graph_listener_func_status status;

	py_component_ptr = SWIG_NewPointerObj(SWIG_as_voidptr(component), component_swig_type, 0);
	if (!py_component_ptr) {
		BT_LOGF_STR("Failed to create component SWIG pointer object.");
		status = __BT_FUNC_STATUS_MEMORY_ERROR;
		goto end;
	}

	py_port_ptr = SWIG_NewPointerObj(SWIG_as_voidptr(port), port_swig_type, 0);
	if (!py_port_ptr) {
		BT_LOGF_STR("Failed to create port SWIG pointer object.");
		status = __BT_FUNC_STATUS_MEMORY_ERROR;
		goto end;
	}

	py_res = PyObject_CallFunction(py_callable, "(OiOi)",
		py_component_ptr, component_class_type, py_port_ptr, port_type);
	if (!py_res) {
		loge_exception("Graph's port added listener (Python)",
			BT_LOG_OUTPUT_LEVEL);
		PyErr_Clear();
		status = __BT_FUNC_STATUS_ERROR;
		goto end;
	}

	BT_ASSERT(py_res == Py_None);
	status = __BT_FUNC_STATUS_OK;

end:
	Py_XDECREF(py_res);
	Py_XDECREF(py_port_ptr);
	Py_XDECREF(py_component_ptr);
	return status;
}

static
bt_graph_listener_func_status
source_component_output_port_added_listener(const bt_component_source *component_source,
					    const bt_port_output *port_output, void *py_callable)
{
	return port_added_listener(
		component_source, SWIGTYPE_p_bt_component_source, BT_COMPONENT_CLASS_TYPE_SOURCE,
		port_output, SWIGTYPE_p_bt_port_output, BT_PORT_TYPE_OUTPUT, py_callable);
}

static
bt_graph_listener_func_status
filter_component_input_port_added_listener(const bt_component_filter *component_filter,
					   const bt_port_input *port_input, void *py_callable)
{
	return port_added_listener(
		component_filter, SWIGTYPE_p_bt_component_filter, BT_COMPONENT_CLASS_TYPE_FILTER,
		port_input, SWIGTYPE_p_bt_port_input, BT_PORT_TYPE_INPUT, py_callable);
}

static
bt_graph_listener_func_status
filter_component_output_port_added_listener(const bt_component_filter *component_filter,
					    const bt_port_output *port_output, void *py_callable)
{
	return port_added_listener(
		component_filter, SWIGTYPE_p_bt_component_filter, BT_COMPONENT_CLASS_TYPE_FILTER,
		port_output, SWIGTYPE_p_bt_port_output, BT_PORT_TYPE_OUTPUT, py_callable);
}

static
bt_graph_listener_func_status
sink_component_input_port_added_listener(const bt_component_sink *component_sink,
					 const bt_port_input *port_input, void *py_callable)
{
	return port_added_listener(
		component_sink, SWIGTYPE_p_bt_component_sink, BT_COMPONENT_CLASS_TYPE_SINK,
		port_input, SWIGTYPE_p_bt_port_input, BT_PORT_TYPE_INPUT, py_callable);
}

static
PyObject *bt_bt2_graph_add_port_added_listener(struct bt_graph *graph,
		PyObject *py_callable)
{
	PyObject *py_listener_ids = NULL;
	PyObject *py_listener_id = NULL;
	bt_listener_id listener_id;
	bt_graph_add_listener_status status;
	const char * const module_name =
		"graph_add_port_added_listener() (Python)";

	BT_ASSERT(graph);
	BT_ASSERT(py_callable);

	/*
	 * Behind the scene, we will be registering 4 different listeners and
	 * return all of their ids.
	 */
	py_listener_ids = PyTuple_New(4);
	if (!py_listener_ids) {
		BT_CURRENT_THREAD_ERROR_APPEND_CAUSE_FROM_UNKNOWN(module_name,
			"Failed to allocate one PyTuple.");
		goto error;
	}

	/* source output port */
	status = bt_graph_add_source_component_output_port_added_listener(
		graph, source_component_output_port_added_listener,
		graph_listener_removed, py_callable, &listener_id);
	if (status != __BT_FUNC_STATUS_OK) {
		/*
		 * bt_graph_add_source_component_output_port_added_listener has
		 * already logged/appended an error cause.
		 */
		goto error;
	}

	py_listener_id = PyLong_FromUnsignedLongLong(listener_id);
	if (!py_listener_id) {
		BT_CURRENT_THREAD_ERROR_APPEND_CAUSE_FROM_UNKNOWN(module_name,
			"Failed to allocate one PyLong.");
		goto error;
	}

	PyTuple_SET_ITEM(py_listener_ids, 0, py_listener_id);
	py_listener_id = NULL;

	/* filter input port */
	status = bt_graph_add_filter_component_input_port_added_listener(
		graph, filter_component_input_port_added_listener,
		graph_listener_removed, py_callable, &listener_id);
	if (status != __BT_FUNC_STATUS_OK) {
		/*
		 * bt_graph_add_filter_component_input_port_added_listener has
		 * already logged/appended an error cause.
		 */
		goto error;
	}

	py_listener_id = PyLong_FromUnsignedLongLong(listener_id);
	if (!py_listener_id) {
		BT_CURRENT_THREAD_ERROR_APPEND_CAUSE_FROM_UNKNOWN(module_name,
			"Failed to allocate one PyLong.");
		goto error;
	}

	PyTuple_SET_ITEM(py_listener_ids, 1, py_listener_id);
	py_listener_id = NULL;

	/* filter output port */
	status = bt_graph_add_filter_component_output_port_added_listener(
		graph, filter_component_output_port_added_listener,
		graph_listener_removed, py_callable, &listener_id);
	if (status != __BT_FUNC_STATUS_OK) {
		/*
		 * bt_graph_add_filter_component_output_port_added_listener has
		 * already logged/appended an error cause.
		 */
		goto error;
	}

	py_listener_id = PyLong_FromUnsignedLongLong(listener_id);
	if (!py_listener_id) {
		BT_CURRENT_THREAD_ERROR_APPEND_CAUSE_FROM_UNKNOWN(module_name,
			"Failed to allocate one PyLong.");
		goto error;
	}

	PyTuple_SET_ITEM(py_listener_ids, 2, py_listener_id);
	py_listener_id = NULL;

	/* sink input port */
	status = bt_graph_add_sink_component_input_port_added_listener(
		graph, sink_component_input_port_added_listener,
		graph_listener_removed, py_callable, &listener_id);
	if (status != __BT_FUNC_STATUS_OK) {
		/*
		 * bt_graph_add_sink_component_input_port_added_listener has
		 * already logged/appended an error cause.
		 */
		goto error;
	}

	py_listener_id = PyLong_FromUnsignedLongLong(listener_id);
	if (!py_listener_id) {
		BT_CURRENT_THREAD_ERROR_APPEND_CAUSE_FROM_UNKNOWN(module_name,
			"Failed to allocate one PyLong.");
		goto error;
	}


	PyTuple_SET_ITEM(py_listener_ids, 3, py_listener_id);
	py_listener_id = NULL;

	Py_INCREF(py_callable);
	Py_INCREF(py_callable);
	Py_INCREF(py_callable);
	Py_INCREF(py_callable);

	goto end;

error:
	Py_XDECREF(py_listener_ids);
	py_listener_ids = Py_None;
	Py_INCREF(py_listener_ids);

end:

	Py_XDECREF(py_listener_id);
	return py_listener_ids;
}

static
bt_graph_listener_func_status ports_connected_listener(
		const void *upstream_component,
		swig_type_info *upstream_component_swig_type,
		bt_component_class_type upstream_component_class_type,
		const bt_port_output *upstream_port,
		const void *downstream_component,
		swig_type_info *downstream_component_swig_type,
		bt_component_class_type downstream_component_class_type,
		const bt_port_input *downstream_port,
		void *py_callable)
{
	PyObject *py_upstream_component_ptr = NULL;
	PyObject *py_upstream_port_ptr = NULL;
	PyObject *py_downstream_component_ptr = NULL;
	PyObject *py_downstream_port_ptr = NULL;
	PyObject *py_res = NULL;
	bt_graph_listener_func_status status;

	py_upstream_component_ptr = SWIG_NewPointerObj(SWIG_as_voidptr(upstream_component),
		upstream_component_swig_type, 0);
	if (!py_upstream_component_ptr) {
		BT_LOGF_STR("Failed to create upstream component SWIG pointer object.");
		status = __BT_FUNC_STATUS_MEMORY_ERROR;
		goto end;
	}

	py_upstream_port_ptr = SWIG_NewPointerObj(
		SWIG_as_voidptr(upstream_port), SWIGTYPE_p_bt_port_output, 0);
	if (!py_upstream_port_ptr) {
		BT_LOGF_STR("Failed to create upstream port SWIG pointer object.");
		status = __BT_FUNC_STATUS_MEMORY_ERROR;
		goto end;
	}

	py_downstream_component_ptr = SWIG_NewPointerObj(SWIG_as_voidptr(downstream_component),
		downstream_component_swig_type, 0);
	if (!py_downstream_component_ptr) {
		BT_LOGF_STR("Failed to create downstream component SWIG pointer object.");
		status = __BT_FUNC_STATUS_MEMORY_ERROR;
		goto end;
	}

	py_downstream_port_ptr = SWIG_NewPointerObj(
		SWIG_as_voidptr(downstream_port), SWIGTYPE_p_bt_port_input, 0);
	if (!py_downstream_port_ptr) {
		BT_LOGF_STR("Failed to create downstream port SWIG pointer object.");
		status = __BT_FUNC_STATUS_MEMORY_ERROR;
		goto end;
	}

	py_res = PyObject_CallFunction(py_callable, "(OiOOiO)",
		py_upstream_component_ptr, upstream_component_class_type,
		py_upstream_port_ptr,
		py_downstream_component_ptr, downstream_component_class_type,
		py_downstream_port_ptr);
	if (!py_res) {
		loge_exception("Graph's port connected listener (Python)",
			BT_LOG_OUTPUT_LEVEL);
		PyErr_Clear();
		status = __BT_FUNC_STATUS_ERROR;
		goto end;
	}

	BT_ASSERT(py_res == Py_None);
	status = __BT_FUNC_STATUS_OK;

end:
	Py_XDECREF(py_upstream_component_ptr);
	Py_XDECREF(py_upstream_port_ptr);
	Py_XDECREF(py_downstream_component_ptr);
	Py_XDECREF(py_downstream_port_ptr);
	Py_XDECREF(py_res);
	return status;
}

static
bt_graph_listener_func_status source_filter_component_ports_connected_listener(
	const bt_component_source *source_component,
	const bt_component_filter *filter_component,
	const bt_port_output *upstream_port,
	const bt_port_input *downstream_port, void *py_callable)
{
	return ports_connected_listener(
		source_component, SWIGTYPE_p_bt_component_source, BT_COMPONENT_CLASS_TYPE_SOURCE,
		upstream_port,
		filter_component, SWIGTYPE_p_bt_component_filter, BT_COMPONENT_CLASS_TYPE_FILTER,
		downstream_port,
		py_callable);
}

static
bt_graph_listener_func_status source_sink_component_ports_connected_listener(
	const bt_component_source *source_component,
	const bt_component_sink *sink_component,
	const bt_port_output *upstream_port,
	const bt_port_input *downstream_port, void *py_callable)
{
	return ports_connected_listener(
		source_component, SWIGTYPE_p_bt_component_source, BT_COMPONENT_CLASS_TYPE_SOURCE,
		upstream_port,
		sink_component, SWIGTYPE_p_bt_component_sink, BT_COMPONENT_CLASS_TYPE_SINK,
		downstream_port,
		py_callable);
}

static
bt_graph_listener_func_status filter_filter_component_ports_connected_listener(
	const bt_component_filter *filter_component_left,
	const bt_component_filter *filter_component_right,
	const bt_port_output *upstream_port,
	const bt_port_input *downstream_port, void *py_callable)
{
	return ports_connected_listener(
		filter_component_left, SWIGTYPE_p_bt_component_filter, BT_COMPONENT_CLASS_TYPE_FILTER,
		upstream_port,
		filter_component_right, SWIGTYPE_p_bt_component_filter, BT_COMPONENT_CLASS_TYPE_FILTER,
		downstream_port,
		py_callable);
}

static
bt_graph_listener_func_status filter_sink_component_ports_connected_listener(
	const bt_component_filter *filter_component,
	const bt_component_sink *sink_component,
	const bt_port_output *upstream_port,
	const bt_port_input *downstream_port, void *py_callable)
{
	return ports_connected_listener(
		filter_component, SWIGTYPE_p_bt_component_filter, BT_COMPONENT_CLASS_TYPE_FILTER,
		upstream_port,
		sink_component, SWIGTYPE_p_bt_component_sink, BT_COMPONENT_CLASS_TYPE_SINK,
		downstream_port,
		py_callable);
}

static
PyObject *bt_bt2_graph_add_ports_connected_listener(struct bt_graph *graph,
		PyObject *py_callable)
{
	PyObject *py_listener_ids = NULL;
	PyObject *py_listener_id = NULL;
	bt_listener_id listener_id;
	bt_graph_add_listener_status status;
	const char * const module_name =
		"graph_add_ports_connected_listener() (Python)";

	BT_ASSERT(graph);
	BT_ASSERT(py_callable);

	/* Behind the scene, we will be registering 4 different listeners and
	 * return all of their ids. */
	py_listener_ids = PyTuple_New(4);
	if (!py_listener_ids) {
		BT_CURRENT_THREAD_ERROR_APPEND_CAUSE_FROM_UNKNOWN(module_name,
			"Failed to allocate one PyTuple.");
		goto error;
	}

	/* source -> filter connection */
	status = bt_graph_add_source_filter_component_ports_connected_listener(
		graph, source_filter_component_ports_connected_listener,
		graph_listener_removed, py_callable, &listener_id);
	if (status != __BT_FUNC_STATUS_OK) {
		/*
		 * bt_graph_add_source_filter_component_ports_connected_listener
		 * has already logged/appended an error cause.
		 */
		goto error;
	}

	py_listener_id = PyLong_FromUnsignedLongLong(listener_id);
	if (!py_listener_id) {
		BT_CURRENT_THREAD_ERROR_APPEND_CAUSE_FROM_UNKNOWN(module_name,
			"Failed to allocate one PyLong.");
		goto error;
	}

	PyTuple_SET_ITEM(py_listener_ids, 0, py_listener_id);
	py_listener_id = NULL;

	/* source -> sink connection */
	status = bt_graph_add_source_sink_component_ports_connected_listener(
		graph, source_sink_component_ports_connected_listener,
		graph_listener_removed, py_callable, &listener_id);
	if (status != __BT_FUNC_STATUS_OK) {
		/*
		 * bt_graph_add_source_sink_component_ports_connected_listener
		 * has already logged/appended an error cause.
		 */
		goto error;
	}

	py_listener_id = PyLong_FromUnsignedLongLong(listener_id);
	if (!py_listener_id) {
		BT_CURRENT_THREAD_ERROR_APPEND_CAUSE_FROM_UNKNOWN(module_name,
			"Failed to allocate one PyLong.");
		goto error;
	}

	PyTuple_SET_ITEM(py_listener_ids, 1, py_listener_id);
	py_listener_id = NULL;

	/* filter -> filter connection */
	status = bt_graph_add_filter_filter_component_ports_connected_listener(
		graph, filter_filter_component_ports_connected_listener,
		graph_listener_removed, py_callable, &listener_id);
	if (status != __BT_FUNC_STATUS_OK) {
		/*
		 * bt_graph_add_filter_filter_component_ports_connected_listener
		 * has already logged/appended an error cause.
		 */
		goto error;
	}

	py_listener_id = PyLong_FromUnsignedLongLong(listener_id);
	if (!py_listener_id) {
		BT_CURRENT_THREAD_ERROR_APPEND_CAUSE_FROM_UNKNOWN(module_name,
			"Failed to allocate one PyLong.");
		goto error;
	}

	PyTuple_SET_ITEM(py_listener_ids, 2, py_listener_id);
	py_listener_id = NULL;

	/* filter -> sink connection */
	status = bt_graph_add_filter_sink_component_ports_connected_listener(
		graph, filter_sink_component_ports_connected_listener,
		graph_listener_removed, py_callable, &listener_id);
	if (status != __BT_FUNC_STATUS_OK) {
		/*
		 * bt_graph_add_filter_sink_component_ports_connected_listener
		 * has already logged/appended an error cause.
		 */
		goto error;
	}

	py_listener_id = PyLong_FromUnsignedLongLong(listener_id);
	if (!py_listener_id) {
		BT_CURRENT_THREAD_ERROR_APPEND_CAUSE_FROM_UNKNOWN(module_name,
			"Failed to allocate one PyLong.");
		goto error;
	}

	PyTuple_SET_ITEM(py_listener_ids, 3, py_listener_id);
	py_listener_id = NULL;

	Py_INCREF(py_callable);
	Py_INCREF(py_callable);
	Py_INCREF(py_callable);
	Py_INCREF(py_callable);

	goto end;

error:
	Py_XDECREF(py_listener_ids);
	py_listener_ids = Py_None;
	Py_INCREF(py_listener_ids);

end:

	Py_XDECREF(py_listener_id);
	return py_listener_ids;
}

static
bt_graph_add_component_status
bt_bt2_graph_add_source_component(
		bt_graph *graph,
		const bt_component_class_source *component_class,
		const char *name, const bt_value *params,
		PyObject *obj, bt_logging_level log_level,
		const bt_component_source **component)
{
	return bt_graph_add_source_component_with_init_method_data(graph,
		component_class, name, params, obj == Py_None ? NULL : obj,
		log_level, component);
}

static
bt_graph_add_component_status
bt_bt2_graph_add_filter_component(
		bt_graph *graph,
		const bt_component_class_filter *component_class,
		const char *name, const bt_value *params,
		PyObject *obj, bt_logging_level log_level,
		const bt_component_filter **component)
{
	return bt_graph_add_filter_component_with_init_method_data(graph,
		component_class, name, params, obj == Py_None ? NULL : obj,
		log_level, component);
}

static
bt_graph_add_component_status
bt_bt2_graph_add_sink_component(
		bt_graph *graph,
		const bt_component_class_sink *component_class,
		const char *name, const bt_value *params,
		PyObject *obj, bt_logging_level log_level,
		const bt_component_sink **component)
{
	return bt_graph_add_sink_component_with_init_method_data(graph,
		component_class, name, params, obj == Py_None ? NULL : obj,
		log_level, component);
}
Commit	Line	Data
	1	/*
	2	* The MIT License (MIT)
	3	*
	4	* Copyright (c) 2017 Philippe Proulx <pproulx@efficios.com>
	5	*
	6	* Permission is hereby granted, free of charge, to any person obtaining a copy
	7	* of this software and associated documentation files (the "Software"), to deal
	8	* in the Software without restriction, including without limitation the rights
	9	* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
	10	* copies of the Software, and to permit persons to whom the Software is
	11	* furnished to do so, subject to the following conditions:
	12	*
	13	* The above copyright notice and this permission notice shall be included in
	14	* all copies or substantial portions of the Software.
	15	*
	16	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	17	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	18	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
	19	* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
	20	* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
	21	* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
	22	* THE SOFTWARE.
	23	*/
	24
	25	static
	26	void graph_listener_removed(void *py_callable)
	27	{
	28	BT_ASSERT(py_callable);
	29	Py_DECREF(py_callable);
	30	}
	31
	32	static bt_graph_listener_func_status port_added_listener(
	33	const void *component,
	34	swig_type_info *component_swig_type,
	35	bt_component_class_type component_class_type,
	36	const void *port,
	37	swig_type_info *port_swig_type,
	38	bt_port_type port_type,
	39	void *py_callable)
	40	{
	41	PyObject *py_component_ptr = NULL;
	42	PyObject *py_port_ptr = NULL;
	43	PyObject *py_res = NULL;
	44	bt_graph_listener_func_status status;
	45
	46	py_component_ptr = SWIG_NewPointerObj(SWIG_as_voidptr(component), component_swig_type, 0);
	47	if (!py_component_ptr) {
	48	BT_LOGF_STR("Failed to create component SWIG pointer object.");
	49	status = __BT_FUNC_STATUS_MEMORY_ERROR;
	50	goto end;
	51	}
	52
	53	py_port_ptr = SWIG_NewPointerObj(SWIG_as_voidptr(port), port_swig_type, 0);
	54	if (!py_port_ptr) {
	55	BT_LOGF_STR("Failed to create port SWIG pointer object.");
	56	status = __BT_FUNC_STATUS_MEMORY_ERROR;
	57	goto end;
	58	}
	59
	60	py_res = PyObject_CallFunction(py_callable, "(OiOi)",
	61	py_component_ptr, component_class_type, py_port_ptr, port_type);
	62	if (!py_res) {
	63	loge_exception("Graph's port added listener (Python)",
	64	BT_LOG_OUTPUT_LEVEL);
	65	PyErr_Clear();
	66	status = __BT_FUNC_STATUS_ERROR;
	67	goto end;
	68	}
	69
	70	BT_ASSERT(py_res == Py_None);
	71	status = __BT_FUNC_STATUS_OK;
	72
	73	end:
	74	Py_XDECREF(py_res);
	75	Py_XDECREF(py_port_ptr);
	76	Py_XDECREF(py_component_ptr);
	77	return status;
	78	}
	79
	80	static
	81	bt_graph_listener_func_status
	82	source_component_output_port_added_listener(const bt_component_source *component_source,
	83	const bt_port_output port_output, void py_callable)
	84	{
	85	return port_added_listener(
	86	component_source, SWIGTYPE_p_bt_component_source, BT_COMPONENT_CLASS_TYPE_SOURCE,
	87	port_output, SWIGTYPE_p_bt_port_output, BT_PORT_TYPE_OUTPUT, py_callable);
	88	}
	89
	90	static
	91	bt_graph_listener_func_status
	92	filter_component_input_port_added_listener(const bt_component_filter *component_filter,
	93	const bt_port_input port_input, void py_callable)
	94	{
	95	return port_added_listener(
	96	component_filter, SWIGTYPE_p_bt_component_filter, BT_COMPONENT_CLASS_TYPE_FILTER,
	97	port_input, SWIGTYPE_p_bt_port_input, BT_PORT_TYPE_INPUT, py_callable);
	98	}
	99
	100	static
	101	bt_graph_listener_func_status
	102	filter_component_output_port_added_listener(const bt_component_filter *component_filter,
	103	const bt_port_output port_output, void py_callable)
	104	{
	105	return port_added_listener(
	106	component_filter, SWIGTYPE_p_bt_component_filter, BT_COMPONENT_CLASS_TYPE_FILTER,
	107	port_output, SWIGTYPE_p_bt_port_output, BT_PORT_TYPE_OUTPUT, py_callable);
	108	}
	109
	110	static
	111	bt_graph_listener_func_status
	112	sink_component_input_port_added_listener(const bt_component_sink *component_sink,
	113	const bt_port_input port_input, void py_callable)
	114	{
	115	return port_added_listener(
	116	component_sink, SWIGTYPE_p_bt_component_sink, BT_COMPONENT_CLASS_TYPE_SINK,
	117	port_input, SWIGTYPE_p_bt_port_input, BT_PORT_TYPE_INPUT, py_callable);
	118	}
	119
	120	static
	121	PyObject bt_bt2_graph_add_port_added_listener(struct bt_graph graph,
	122	PyObject *py_callable)
	123	{
	124	PyObject *py_listener_ids = NULL;
	125	PyObject *py_listener_id = NULL;
	126	bt_listener_id listener_id;
	127	bt_graph_add_listener_status status;
	128	const char * const module_name =
	129	"graph_add_port_added_listener() (Python)";
	130
	131	BT_ASSERT(graph);
	132	BT_ASSERT(py_callable);
	133
	134	/*
	135	* Behind the scene, we will be registering 4 different listeners and
	136	* return all of their ids.
	137	*/
	138	py_listener_ids = PyTuple_New(4);
	139	if (!py_listener_ids) {
	140	BT_CURRENT_THREAD_ERROR_APPEND_CAUSE_FROM_UNKNOWN(module_name,
	141	"Failed to allocate one PyTuple.");
	142	goto error;
	143	}
	144
	145	/* source output port */
	146	status = bt_graph_add_source_component_output_port_added_listener(
	147	graph, source_component_output_port_added_listener,
	148	graph_listener_removed, py_callable, &listener_id);
	149	if (status != __BT_FUNC_STATUS_OK) {
	150	/*
	151	* bt_graph_add_source_component_output_port_added_listener has
	152	* already logged/appended an error cause.
	153	*/
	154	goto error;
	155	}
	156
	157	py_listener_id = PyLong_FromUnsignedLongLong(listener_id);
	158	if (!py_listener_id) {
	159	BT_CURRENT_THREAD_ERROR_APPEND_CAUSE_FROM_UNKNOWN(module_name,
	160	"Failed to allocate one PyLong.");
	161	goto error;
	162	}
	163
	164	PyTuple_SET_ITEM(py_listener_ids, 0, py_listener_id);
	165	py_listener_id = NULL;
	166
	167	/* filter input port */
	168	status = bt_graph_add_filter_component_input_port_added_listener(
	169	graph, filter_component_input_port_added_listener,
	170	graph_listener_removed, py_callable, &listener_id);
	171	if (status != __BT_FUNC_STATUS_OK) {
	172	/*
	173	* bt_graph_add_filter_component_input_port_added_listener has
	174	* already logged/appended an error cause.
	175	*/
	176	goto error;
	177	}
	178
	179	py_listener_id = PyLong_FromUnsignedLongLong(listener_id);
	180	if (!py_listener_id) {
	181	BT_CURRENT_THREAD_ERROR_APPEND_CAUSE_FROM_UNKNOWN(module_name,
	182	"Failed to allocate one PyLong.");
	183	goto error;
	184	}
	185
	186	PyTuple_SET_ITEM(py_listener_ids, 1, py_listener_id);
	187	py_listener_id = NULL;
	188
	189	/* filter output port */
	190	status = bt_graph_add_filter_component_output_port_added_listener(
	191	graph, filter_component_output_port_added_listener,
	192	graph_listener_removed, py_callable, &listener_id);
	193	if (status != __BT_FUNC_STATUS_OK) {
	194	/*
	195	* bt_graph_add_filter_component_output_port_added_listener has
	196	* already logged/appended an error cause.
	197	*/
	198	goto error;
	199	}
	200
	201	py_listener_id = PyLong_FromUnsignedLongLong(listener_id);
	202	if (!py_listener_id) {
	203	BT_CURRENT_THREAD_ERROR_APPEND_CAUSE_FROM_UNKNOWN(module_name,
	204	"Failed to allocate one PyLong.");
	205	goto error;
	206	}
	207
	208	PyTuple_SET_ITEM(py_listener_ids, 2, py_listener_id);
	209	py_listener_id = NULL;
	210
	211	/* sink input port */
	212	status = bt_graph_add_sink_component_input_port_added_listener(
	213	graph, sink_component_input_port_added_listener,
	214	graph_listener_removed, py_callable, &listener_id);
	215	if (status != __BT_FUNC_STATUS_OK) {
	216	/*
	217	* bt_graph_add_sink_component_input_port_added_listener has
	218	* already logged/appended an error cause.
	219	*/
	220	goto error;
	221	}
	222
	223	py_listener_id = PyLong_FromUnsignedLongLong(listener_id);
	224	if (!py_listener_id) {
	225	BT_CURRENT_THREAD_ERROR_APPEND_CAUSE_FROM_UNKNOWN(module_name,
	226	"Failed to allocate one PyLong.");
	227	goto error;
	228	}
	229
	230
	231	PyTuple_SET_ITEM(py_listener_ids, 3, py_listener_id);
	232	py_listener_id = NULL;
	233
	234	Py_INCREF(py_callable);
	235	Py_INCREF(py_callable);
	236	Py_INCREF(py_callable);
	237	Py_INCREF(py_callable);
	238
	239	goto end;
	240
	241	error:
	242	Py_XDECREF(py_listener_ids);
	243	py_listener_ids = Py_None;
	244	Py_INCREF(py_listener_ids);
	245
	246	end:
	247
	248	Py_XDECREF(py_listener_id);
	249	return py_listener_ids;
	250	}
	251
	252	static
	253	bt_graph_listener_func_status ports_connected_listener(
	254	const void *upstream_component,
	255	swig_type_info *upstream_component_swig_type,
	256	bt_component_class_type upstream_component_class_type,
	257	const bt_port_output *upstream_port,
	258	const void *downstream_component,
	259	swig_type_info *downstream_component_swig_type,
	260	bt_component_class_type downstream_component_class_type,
	261	const bt_port_input *downstream_port,
	262	void *py_callable)
	263	{
	264	PyObject *py_upstream_component_ptr = NULL;
	265	PyObject *py_upstream_port_ptr = NULL;
	266	PyObject *py_downstream_component_ptr = NULL;
	267	PyObject *py_downstream_port_ptr = NULL;
	268	PyObject *py_res = NULL;
	269	bt_graph_listener_func_status status;
	270
	271	py_upstream_component_ptr = SWIG_NewPointerObj(SWIG_as_voidptr(upstream_component),
	272	upstream_component_swig_type, 0);
	273	if (!py_upstream_component_ptr) {
	274	BT_LOGF_STR("Failed to create upstream component SWIG pointer object.");
	275	status = __BT_FUNC_STATUS_MEMORY_ERROR;
	276	goto end;
	277	}
	278
	279	py_upstream_port_ptr = SWIG_NewPointerObj(
	280	SWIG_as_voidptr(upstream_port), SWIGTYPE_p_bt_port_output, 0);
	281	if (!py_upstream_port_ptr) {
	282	BT_LOGF_STR("Failed to create upstream port SWIG pointer object.");
	283	status = __BT_FUNC_STATUS_MEMORY_ERROR;
	284	goto end;
	285	}
	286
	287	py_downstream_component_ptr = SWIG_NewPointerObj(SWIG_as_voidptr(downstream_component),
	288	downstream_component_swig_type, 0);
	289	if (!py_downstream_component_ptr) {
	290	BT_LOGF_STR("Failed to create downstream component SWIG pointer object.");
	291	status = __BT_FUNC_STATUS_MEMORY_ERROR;
	292	goto end;
	293	}
	294
	295	py_downstream_port_ptr = SWIG_NewPointerObj(
	296	SWIG_as_voidptr(downstream_port), SWIGTYPE_p_bt_port_input, 0);
	297	if (!py_downstream_port_ptr) {
	298	BT_LOGF_STR("Failed to create downstream port SWIG pointer object.");
	299	status = __BT_FUNC_STATUS_MEMORY_ERROR;
	300	goto end;
	301	}
	302
	303	py_res = PyObject_CallFunction(py_callable, "(OiOOiO)",
	304	py_upstream_component_ptr, upstream_component_class_type,
	305	py_upstream_port_ptr,
	306	py_downstream_component_ptr, downstream_component_class_type,
	307	py_downstream_port_ptr);
	308	if (!py_res) {
	309	loge_exception("Graph's port connected listener (Python)",
	310	BT_LOG_OUTPUT_LEVEL);
	311	PyErr_Clear();
	312	status = __BT_FUNC_STATUS_ERROR;
	313	goto end;
	314	}
	315
	316	BT_ASSERT(py_res == Py_None);
	317	status = __BT_FUNC_STATUS_OK;
	318
	319	end:
	320	Py_XDECREF(py_upstream_component_ptr);
	321	Py_XDECREF(py_upstream_port_ptr);
	322	Py_XDECREF(py_downstream_component_ptr);
	323	Py_XDECREF(py_downstream_port_ptr);
	324	Py_XDECREF(py_res);
	325	return status;
	326	}
	327
	328	static
	329	bt_graph_listener_func_status source_filter_component_ports_connected_listener(
	330	const bt_component_source *source_component,
	331	const bt_component_filter *filter_component,
	332	const bt_port_output *upstream_port,
	333	const bt_port_input downstream_port, void py_callable)
	334	{
	335	return ports_connected_listener(
	336	source_component, SWIGTYPE_p_bt_component_source, BT_COMPONENT_CLASS_TYPE_SOURCE,
	337	upstream_port,
	338	filter_component, SWIGTYPE_p_bt_component_filter, BT_COMPONENT_CLASS_TYPE_FILTER,
	339	downstream_port,
	340	py_callable);
	341	}
	342
	343	static
	344	bt_graph_listener_func_status source_sink_component_ports_connected_listener(
	345	const bt_component_source *source_component,
	346	const bt_component_sink *sink_component,
	347	const bt_port_output *upstream_port,
	348	const bt_port_input downstream_port, void py_callable)
	349	{
	350	return ports_connected_listener(
	351	source_component, SWIGTYPE_p_bt_component_source, BT_COMPONENT_CLASS_TYPE_SOURCE,
	352	upstream_port,
	353	sink_component, SWIGTYPE_p_bt_component_sink, BT_COMPONENT_CLASS_TYPE_SINK,
	354	downstream_port,
	355	py_callable);
	356	}
	357
	358	static
	359	bt_graph_listener_func_status filter_filter_component_ports_connected_listener(
	360	const bt_component_filter *filter_component_left,
	361	const bt_component_filter *filter_component_right,
	362	const bt_port_output *upstream_port,
	363	const bt_port_input downstream_port, void py_callable)
	364	{
	365	return ports_connected_listener(
	366	filter_component_left, SWIGTYPE_p_bt_component_filter, BT_COMPONENT_CLASS_TYPE_FILTER,
	367	upstream_port,
	368	filter_component_right, SWIGTYPE_p_bt_component_filter, BT_COMPONENT_CLASS_TYPE_FILTER,
	369	downstream_port,
	370	py_callable);
	371	}
	372
	373	static
	374	bt_graph_listener_func_status filter_sink_component_ports_connected_listener(
	375	const bt_component_filter *filter_component,
	376	const bt_component_sink *sink_component,
	377	const bt_port_output *upstream_port,
	378	const bt_port_input downstream_port, void py_callable)
	379	{
	380	return ports_connected_listener(
	381	filter_component, SWIGTYPE_p_bt_component_filter, BT_COMPONENT_CLASS_TYPE_FILTER,
	382	upstream_port,
	383	sink_component, SWIGTYPE_p_bt_component_sink, BT_COMPONENT_CLASS_TYPE_SINK,
	384	downstream_port,
	385	py_callable);
	386	}
	387
	388	static
	389	PyObject bt_bt2_graph_add_ports_connected_listener(struct bt_graph graph,
	390	PyObject *py_callable)
	391	{
	392	PyObject *py_listener_ids = NULL;
	393	PyObject *py_listener_id = NULL;
	394	bt_listener_id listener_id;
	395	bt_graph_add_listener_status status;
	396	const char * const module_name =
	397	"graph_add_ports_connected_listener() (Python)";
	398
	399	BT_ASSERT(graph);
	400	BT_ASSERT(py_callable);
	401
	402	/* Behind the scene, we will be registering 4 different listeners and
	403	* return all of their ids. */
	404	py_listener_ids = PyTuple_New(4);
	405	if (!py_listener_ids) {
	406	BT_CURRENT_THREAD_ERROR_APPEND_CAUSE_FROM_UNKNOWN(module_name,
	407	"Failed to allocate one PyTuple.");
	408	goto error;
	409	}
	410
	411	/* source -> filter connection */
	412	status = bt_graph_add_source_filter_component_ports_connected_listener(
	413	graph, source_filter_component_ports_connected_listener,
	414	graph_listener_removed, py_callable, &listener_id);
	415	if (status != __BT_FUNC_STATUS_OK) {
	416	/*
	417	* bt_graph_add_source_filter_component_ports_connected_listener
	418	* has already logged/appended an error cause.
	419	*/
	420	goto error;
	421	}
	422
	423	py_listener_id = PyLong_FromUnsignedLongLong(listener_id);
	424	if (!py_listener_id) {
	425	BT_CURRENT_THREAD_ERROR_APPEND_CAUSE_FROM_UNKNOWN(module_name,
	426	"Failed to allocate one PyLong.");
	427	goto error;
	428	}
	429
	430	PyTuple_SET_ITEM(py_listener_ids, 0, py_listener_id);
	431	py_listener_id = NULL;
	432
	433	/* source -> sink connection */
	434	status = bt_graph_add_source_sink_component_ports_connected_listener(
	435	graph, source_sink_component_ports_connected_listener,
	436	graph_listener_removed, py_callable, &listener_id);
	437	if (status != __BT_FUNC_STATUS_OK) {
	438	/*
	439	* bt_graph_add_source_sink_component_ports_connected_listener
	440	* has already logged/appended an error cause.
	441	*/
	442	goto error;
	443	}
	444
	445	py_listener_id = PyLong_FromUnsignedLongLong(listener_id);
	446	if (!py_listener_id) {
	447	BT_CURRENT_THREAD_ERROR_APPEND_CAUSE_FROM_UNKNOWN(module_name,
	448	"Failed to allocate one PyLong.");
	449	goto error;
	450	}
	451
	452	PyTuple_SET_ITEM(py_listener_ids, 1, py_listener_id);
	453	py_listener_id = NULL;
	454
	455	/* filter -> filter connection */
	456	status = bt_graph_add_filter_filter_component_ports_connected_listener(
	457	graph, filter_filter_component_ports_connected_listener,
	458	graph_listener_removed, py_callable, &listener_id);
	459	if (status != __BT_FUNC_STATUS_OK) {
	460	/*
	461	* bt_graph_add_filter_filter_component_ports_connected_listener
	462	* has already logged/appended an error cause.
	463	*/
	464	goto error;
	465	}
	466
	467	py_listener_id = PyLong_FromUnsignedLongLong(listener_id);
	468	if (!py_listener_id) {
	469	BT_CURRENT_THREAD_ERROR_APPEND_CAUSE_FROM_UNKNOWN(module_name,
	470	"Failed to allocate one PyLong.");
	471	goto error;
	472	}
	473
	474	PyTuple_SET_ITEM(py_listener_ids, 2, py_listener_id);
	475	py_listener_id = NULL;
	476
	477	/* filter -> sink connection */
	478	status = bt_graph_add_filter_sink_component_ports_connected_listener(
	479	graph, filter_sink_component_ports_connected_listener,
	480	graph_listener_removed, py_callable, &listener_id);
	481	if (status != __BT_FUNC_STATUS_OK) {
	482	/*
	483	* bt_graph_add_filter_sink_component_ports_connected_listener
	484	* has already logged/appended an error cause.
	485	*/
	486	goto error;
	487	}
	488
	489	py_listener_id = PyLong_FromUnsignedLongLong(listener_id);
	490	if (!py_listener_id) {
	491	BT_CURRENT_THREAD_ERROR_APPEND_CAUSE_FROM_UNKNOWN(module_name,
	492	"Failed to allocate one PyLong.");
	493	goto error;
	494	}
	495
	496	PyTuple_SET_ITEM(py_listener_ids, 3, py_listener_id);
	497	py_listener_id = NULL;
	498
	499	Py_INCREF(py_callable);
	500	Py_INCREF(py_callable);
	501	Py_INCREF(py_callable);
	502	Py_INCREF(py_callable);
	503
	504	goto end;
	505
	506	error:
	507	Py_XDECREF(py_listener_ids);
	508	py_listener_ids = Py_None;
	509	Py_INCREF(py_listener_ids);
	510
	511	end:
	512
	513	Py_XDECREF(py_listener_id);
	514	return py_listener_ids;
	515	}
	516
	517	static
	518	bt_graph_add_component_status
	519	bt_bt2_graph_add_source_component(
	520	bt_graph *graph,
	521	const bt_component_class_source *component_class,
	522	const char name, const bt_value params,
	523	PyObject *obj, bt_logging_level log_level,
	524	const bt_component_source **component)
	525	{
	526	return bt_graph_add_source_component_with_init_method_data(graph,
	527	component_class, name, params, obj == Py_None ? NULL : obj,
	528	log_level, component);
	529	}
	530
	531	static
	532	bt_graph_add_component_status
	533	bt_bt2_graph_add_filter_component(
	534	bt_graph *graph,
	535	const bt_component_class_filter *component_class,
	536	const char name, const bt_value params,
	537	PyObject *obj, bt_logging_level log_level,
	538	const bt_component_filter **component)
	539	{
	540	return bt_graph_add_filter_component_with_init_method_data(graph,
	541	component_class, name, params, obj == Py_None ? NULL : obj,
	542	log_level, component);
	543	}
	544
	545	static
	546	bt_graph_add_component_status
	547	bt_bt2_graph_add_sink_component(
	548	bt_graph *graph,
	549	const bt_component_class_sink *component_class,
	550	const char name, const bt_value params,
	551	PyObject *obj, bt_logging_level log_level,
	552	const bt_component_sink **component)
	553	{
	554	return bt_graph_add_sink_component_with_init_method_data(graph,
	555	component_class, name, params, obj == Py_None ? NULL : obj,
	556	log_level, component);
	557	}