1 files changed, 508 insertions, 0 deletions
diff --git a/libs/backends/jack/jack_portengine.cc b/libs/backends/jack/jack_portengine.cc
new file mode 100644
index 0000000000..0d66f50448
--- /dev/null
+++ b/libs/backends/jack/jack_portengine.cc
@@ -0,0 +1,508 @@
+/*
+    Copyright (C) 2013 Paul Davis
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program 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 General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+*/
+
+#include <string.h>
+#include <stdint.h>
+
+#include "pbd/error.h"
+
+#include "jack_audiobackend.h"
+#include "jack_connection.h"
+#include "jack/midiport.h"
+
+#include "ardour/port_manager.h"
+
+#include "i18n.h"
+
+using namespace ARDOUR;
+using namespace PBD;
+using std::string;
+using std::vector;
+
+#define GET_PRIVATE_JACK_POINTER(localvar)  jack_client_t* localvar = _jack_connection->jack(); if (!(localvar)) { return; }
+#define GET_PRIVATE_JACK_POINTER_RET(localvar,r) jack_client_t* localvar = _jack_connection->jack(); if (!(localvar)) { return r; }
+
+static uint32_t
+ardour_port_flags_to_jack_flags (PortFlags flags)
+{
+	uint32_t jack_flags = 0;
+	
+	if (flags & IsInput) {
+		jack_flags |= JackPortIsInput;
+	}
+	if (flags & IsOutput) {
+		jack_flags |= JackPortIsOutput;
+	}
+	if (flags & IsTerminal) {
+		jack_flags |= JackPortIsTerminal;
+	}
+	if (flags & IsPhysical) {
+		jack_flags |= JackPortIsPhysical;
+	}
+	if (flags & CanMonitor) {
+		jack_flags |= JackPortCanMonitor;
+	}
+
+	return jack_flags;
+}
+
+static DataType
+jack_port_type_to_ardour_data_type (const char* jack_type)
+{
+	if (strcmp (jack_type, JACK_DEFAULT_AUDIO_TYPE) == 0) {
+		return DataType::AUDIO;
+	} else if (strcmp (jack_type, JACK_DEFAULT_MIDI_TYPE) == 0) {
+		return DataType::MIDI;
+	}
+	return DataType::NIL;
+}
+
+static const char*
+ardour_data_type_to_jack_port_type (DataType d)
+{
+	switch (d) {
+	case DataType::AUDIO:
+		return JACK_DEFAULT_AUDIO_TYPE;
+	case DataType::MIDI:
+		return JACK_DEFAULT_MIDI_TYPE;
+	}
+
+	return "";
+}
+
+void
+JACKAudioBackend::when_connected_to_jack ()
+{
+	/* register callbacks for stuff that is our responsibility */
+
+	jack_client_t* client = _jack_connection->jack();
+
+	if (!client) {
+		/* how could this happen? it could ... */
+		error << _("Already disconnected from JACK before PortEngine could register callbacks") << endmsg;
+		return;
+	}
+
+        jack_set_port_registration_callback (client, _registration_callback, this);
+        jack_set_port_connect_callback (client, _connect_callback, this);
+        jack_set_graph_order_callback (client, _graph_order_callback, this);
+}
+
+int
+JACKAudioBackend::set_port_name (PortHandle port, const std::string& name)
+{
+	return jack_port_set_name ((jack_port_t*) port, name.c_str());
+}
+
+string
+JACKAudioBackend::get_port_name (PortHandle port) const
+{
+	return jack_port_name ((jack_port_t*) port);
+}
+
+PortEngine::PortHandle*
+JACKAudioBackend:: get_port_by_name (const std::string& name) const
+{
+	GET_PRIVATE_JACK_POINTER_RET (_priv_jack, 0);
+	return (PortHandle*) jack_port_by_name (_priv_jack, name.c_str());
+}
+
+void
+JACKAudioBackend::_registration_callback (jack_port_id_t /*id*/, int /*reg*/, void* arg)
+{
+	static_cast<JACKAudioBackend*> (arg)->manager.registration_callback ();
+}
+
+int
+JACKAudioBackend::_graph_order_callback (void *arg)
+{
+	return static_cast<JACKAudioBackend*> (arg)->manager.graph_order_callback ();
+}
+
+void
+JACKAudioBackend::_connect_callback (jack_port_id_t id_a, jack_port_id_t id_b, int conn, void* arg)
+{
+	static_cast<JACKAudioBackend*> (arg)->connect_callback (id_a, id_b, conn);
+}
+
+void
+JACKAudioBackend::connect_callback (jack_port_id_t id_a, jack_port_id_t id_b, int conn)
+{
+	if (manager.port_remove_in_progress()) {
+		return;
+	}
+
+	GET_PRIVATE_JACK_POINTER (_priv_jack);
+
+	jack_port_t* a = jack_port_by_id (_priv_jack, id_a);
+	jack_port_t* b = jack_port_by_id (_priv_jack, id_b);
+
+	manager.connect_callback (jack_port_name (a), jack_port_name (b), conn == 0 ? false : true);
+}
+
+bool
+JACKAudioBackend::connected (PortHandle port, bool process_callback_safe)
+{
+	bool ret = false;
+
+	const char** ports;
+
+	if (process_callback_safe) {
+		ports = jack_port_get_connections ((jack_port_t*)port);
+	} else {
+		GET_PRIVATE_JACK_POINTER_RET (_priv_jack, false);
+		ports = jack_port_get_all_connections (_priv_jack, (jack_port_t*)port);
+	}
+
+	if (ports) {
+		ret = true;
+	}
+
+	jack_free (ports);
+
+	return ret;
+}
+
+bool
+JACKAudioBackend::connected_to (PortHandle port, const std::string& other, bool process_callback_safe)
+{
+	bool ret = false;
+	const char** ports;
+
+	if (process_callback_safe) {
+		ports = jack_port_get_connections ((jack_port_t*)port);
+	} else {
+		GET_PRIVATE_JACK_POINTER_RET (_priv_jack, false);
+		ports = jack_port_get_all_connections (_priv_jack, (jack_port_t*)port);
+	}
+
+	if (ports) {
+		for (int i = 0; ports[i]; ++i) {
+			if (other == ports[i]) {
+				ret = true;
+			}
+		}
+		jack_free (ports);
+	}
+
+	return ret;
+}
+
+bool
+JACKAudioBackend::physically_connected (PortHandle p, bool process_callback_safe)
+{
+	GET_PRIVATE_JACK_POINTER_RET (_priv_jack, false);
+	jack_port_t* port = (jack_port_t*) p;
+
+	const char** ports;
+	
+	if (process_callback_safe) {
+		ports = jack_port_get_connections ((jack_port_t*)port);
+	} else {
+		GET_PRIVATE_JACK_POINTER_RET (_priv_jack, false);
+		ports = jack_port_get_all_connections (_priv_jack, (jack_port_t*)port);
+	}
+
+	if (ports) {
+		for (int i = 0; ports[i]; ++i) {
+
+			jack_port_t* other = jack_port_by_name (_priv_jack, ports[i]);
+
+			if (other && (jack_port_flags (other) & JackPortIsPhysical)) {
+				return true;
+			}
+		}
+		jack_free (ports);
+	}
+
+	return false;
+}
+
+int
+JACKAudioBackend::get_connections (PortHandle port, vector<string>& s, bool process_callback_safe)
+{
+	const char** ports;
+
+	if (process_callback_safe) {
+		ports = jack_port_get_connections ((jack_port_t*)port);
+	} else {
+		GET_PRIVATE_JACK_POINTER_RET (_priv_jack, 0);
+		ports = jack_port_get_all_connections (_priv_jack, (jack_port_t*)port);
+	}
+
+	if (ports) {
+		for (int i = 0; ports[i]; ++i) {
+			s.push_back (ports[i]);
+		}
+		jack_free (ports);
+	}
+
+	return s.size();
+}
+
+DataType
+JACKAudioBackend::port_data_type (PortHandle p) const
+{
+	return jack_port_type_to_ardour_data_type (jack_port_type ((jack_port_t*) p));
+}
+
+const string&
+JACKAudioBackend::my_name() const
+{
+	return _jack_connection->client_name();
+}
+
+bool
+JACKAudioBackend::port_is_physical (PortHandle ph) const
+{
+	if (!ph) {
+                return false;
+        }
+
+        return jack_port_flags ((jack_port_t*) ph) & JackPortIsPhysical;
+}
+
+int
+JACKAudioBackend::get_ports (const string& port_name_pattern, DataType type, PortFlags flags, vector<string>& s) const
+{
+
+	GET_PRIVATE_JACK_POINTER_RET (_priv_jack,0);
+
+	const char** ports =  jack_get_ports (_priv_jack, port_name_pattern.c_str(), 
+					      ardour_data_type_to_jack_port_type (type), 
+					      ardour_port_flags_to_jack_flags (flags));
+
+	if (ports == 0) {
+		return 0;
+	}
+
+	for (uint32_t i = 0; ports[i]; ++i) {
+		s.push_back (ports[i]);
+	}
+
+	jack_free (ports);
+	
+	return s.size();
+}
+
+ChanCount
+JACKAudioBackend::n_physical_inputs () const
+{
+	return n_physical (JackPortIsInput);
+}
+
+ChanCount
+JACKAudioBackend::n_physical_outputs () const
+{
+	return n_physical (JackPortIsOutput);
+}
+
+void
+JACKAudioBackend::get_physical (DataType type, unsigned long flags, vector<string>& phy) const
+{
+	GET_PRIVATE_JACK_POINTER (_priv_jack);
+	const char ** ports;
+
+	if ((ports = jack_get_ports (_priv_jack, NULL, ardour_data_type_to_jack_port_type (type), JackPortIsPhysical | flags)) == 0) {
+		return;
+	}
+
+	if (ports) {
+		for (uint32_t i = 0; ports[i]; ++i) {
+                        if (strstr (ports[i], "Midi-Through")) {
+                                continue;
+                        }
+			phy.push_back (ports[i]);
+		}
+		jack_free (ports);
+	}
+}
+
+/** Get physical ports for which JackPortIsOutput is set; ie those that correspond to
+ *  a physical input connector.
+ */
+void
+JACKAudioBackend::get_physical_inputs (DataType type, vector<string>& ins)
+{
+	get_physical (type, JackPortIsOutput, ins);
+}
+
+/** Get physical ports for which JackPortIsInput is set; ie those that correspond to
+ *  a physical output connector.
+ */
+void
+JACKAudioBackend::get_physical_outputs (DataType type, vector<string>& outs)
+{
+	get_physical (type, JackPortIsInput, outs);
+}
+
+
+bool
+JACKAudioBackend::can_monitor_input () const
+{
+	GET_PRIVATE_JACK_POINTER_RET (_priv_jack,false);
+	const char ** ports;
+
+	if ((ports = jack_get_ports (_priv_jack, NULL, JACK_DEFAULT_AUDIO_TYPE, JackPortCanMonitor)) == 0) {
+		return false;
+	}
+
+	jack_free (ports);
+
+	return true;
+}
+
+int
+JACKAudioBackend::request_input_monitoring (PortHandle port, bool yn)
+{
+	return jack_port_request_monitor ((jack_port_t*) port, yn);
+}
+int
+JACKAudioBackend::ensure_input_monitoring (PortHandle port, bool yn)
+{
+	return jack_port_ensure_monitor ((jack_port_t*) port, yn);
+}
+bool
+JACKAudioBackend::monitoring_input (PortHandle port)
+{
+	return jack_port_monitoring_input ((jack_port_t*) port);
+}
+
+PortEngine::PortHandle
+JACKAudioBackend::register_port (const std::string& shortname, ARDOUR::DataType type, ARDOUR::PortFlags flags)
+{
+	GET_PRIVATE_JACK_POINTER_RET (_priv_jack, 0);
+	return jack_port_register (_priv_jack, shortname.c_str(), 
+				   ardour_data_type_to_jack_port_type (type),
+				   ardour_port_flags_to_jack_flags (flags),
+				   0);
+}
+
+void
+JACKAudioBackend::unregister_port (PortHandle port)
+{
+	GET_PRIVATE_JACK_POINTER (_priv_jack);
+	(void) jack_port_unregister (_priv_jack, (jack_port_t*) port);
+}
+
+int
+JACKAudioBackend::connect (PortHandle port, const std::string& other)
+{
+	GET_PRIVATE_JACK_POINTER_RET (_priv_jack, -1);
+	return jack_connect (_priv_jack, jack_port_name ((jack_port_t*) port), other.c_str());
+}
+int
+JACKAudioBackend::connect (const std::string& src, const std::string& dst)
+{
+	GET_PRIVATE_JACK_POINTER_RET (_priv_jack, -1);
+	
+	int r = jack_connect (_priv_jack, src.c_str(), dst.c_str());
+	return r;
+}
+
+int
+JACKAudioBackend::disconnect (PortHandle port, const std::string& other)
+{
+	GET_PRIVATE_JACK_POINTER_RET (_priv_jack, -1);
+	return jack_disconnect (_priv_jack, jack_port_name ((jack_port_t*) port), other.c_str());
+}
+
+int
+JACKAudioBackend::disconnect (const std::string& src, const std::string& dst)
+{
+	GET_PRIVATE_JACK_POINTER_RET (_priv_jack, -1);
+	return jack_disconnect (_priv_jack, src.c_str(), dst.c_str());
+}
+
+int
+JACKAudioBackend::disconnect_all (PortHandle port)
+{
+	GET_PRIVATE_JACK_POINTER_RET (_priv_jack, -1);
+	return jack_port_disconnect (_priv_jack, (jack_port_t*) port);
+}
+
+int
+JACKAudioBackend::midi_event_get (pframes_t& timestamp, size_t& size, uint8_t** buf, void* port_buffer, uint32_t event_index)
+{
+	jack_midi_event_t ev;
+	int ret;
+
+	if ((ret = jack_midi_event_get (&ev, port_buffer, event_index)) == 0) {
+		timestamp = ev.time;
+		size = ev.size;
+		*buf = ev.buffer;
+	}
+
+	return ret;
+}
+
+int
+JACKAudioBackend::midi_event_put (void* port_buffer, pframes_t timestamp, const uint8_t* buffer, size_t size)
+{
+	return jack_midi_event_write (port_buffer, timestamp, buffer, size);
+}
+
+uint32_t
+JACKAudioBackend::get_midi_event_count (void* port_buffer)
+{
+	return jack_midi_get_event_count (port_buffer);
+}
+
+void
+JACKAudioBackend::midi_clear (void* port_buffer)
+{
+	jack_midi_clear_buffer (port_buffer);
+}
+
+void
+JACKAudioBackend::set_latency_range (PortHandle port, bool for_playback, LatencyRange r)
+{
+	jack_latency_range_t range;
+	
+	range.min = r.min;
+	range.max = r.max;
+
+	jack_port_set_latency_range ((jack_port_t*) port, for_playback ? JackPlaybackLatency : JackCaptureLatency, &range);
+}
+
+LatencyRange
+JACKAudioBackend::get_latency_range (PortHandle port, bool for_playback)
+{
+	jack_latency_range_t range;
+	LatencyRange ret;
+	
+	jack_port_get_latency_range ((jack_port_t*) port, for_playback ? JackPlaybackLatency : JackCaptureLatency, &range);
+
+	ret.min = range.min;
+	ret.max = range.max;
+
+	return ret;
+}
+
+void*
+JACKAudioBackend::get_buffer (PortHandle port, pframes_t nframes)
+{
+	return jack_port_get_buffer ((jack_port_t*) port, nframes);
+}
+
+uint32_t
+JACKAudioBackend::port_name_size() const
+{
+	return jack_port_name_size ();
+}