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livetrax/libs/surfaces/wiimote/wiimote.cc

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/*
Copyright (C) 2009-2013 Paul Davis
Authors: Sampo Savolainen, Jannis Pohlmann
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 <iostream>
#include "pbd/compose.h"
#include "pbd/error.h"
#include "ardour/debug.h"
#include "ardour/session.h"
#include "i18n.h"
#include "wiimote.h"
using namespace ARDOUR;
using namespace PBD;
using namespace std;
#include "pbd/abstract_ui.cc" // instantiate template
void wiimote_control_protocol_mesg_callback (cwiid_wiimote_t *wiimote, int mesg_count, union cwiid_mesg mesg[], timespec *t);
WiimoteControlProtocol::WiimoteControlProtocol (Session& session)
: ControlProtocol (session, X_("Wiimote"))
, AbstractUI<WiimoteControlUIRequest> ("wiimote")
, wiimote (0)
, idle_source (0)
, button_state (0)
, callback_thread_registered (false)
{
}
WiimoteControlProtocol::~WiimoteControlProtocol ()
{
stop ();
}
bool
WiimoteControlProtocol::probe ()
{
return true;
}
int
WiimoteControlProtocol::set_active (bool yn)
{
int result;
DEBUG_TRACE (DEBUG::WiimoteControl, string_compose ("WiimoteControlProtocol::set_active init with yn: '%1'\n", yn));
/* do nothing if the active state is not changing */
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if (yn == active()) {
return 0;
}
if (yn) {
/* activate Wiimote control surface */
result = start ();
} else {
/* deactivate Wiimote control surface */
result = stop ();
}
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ControlProtocol::set_active (yn);
DEBUG_TRACE (DEBUG::WiimoteControl, "WiimoteControlProtocol::set_active done\n");
return result;
}
XMLNode&
WiimoteControlProtocol::get_state ()
{
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XMLNode& node (ControlProtocol::get_state());
node.add_property (X_("feedback"), "0");
return node;
}
int
WiimoteControlProtocol::set_state (const XMLNode&, int)
{
return 0;
}
void
WiimoteControlProtocol::do_request (WiimoteControlUIRequest* req)
{
DEBUG_TRACE (DEBUG::WiimoteControl, "WiimoteControlProtocol::do_request init\n");
if (req->type == CallSlot) {
call_slot (MISSING_INVALIDATOR, req->the_slot);
} else if (req->type == Quit) {
stop ();
}
DEBUG_TRACE (DEBUG::WiimoteControl, "WiimoteControlProtocol::do_request done\n");
}
int
WiimoteControlProtocol::start ()
{
DEBUG_TRACE (DEBUG::WiimoteControl, "WiimoteControlProtocol::start init\n");
// update LEDs whenever the transport or recording state changes
session->TransportStateChange.connect (session_connections, MISSING_INVALIDATOR, boost::bind (&WiimoteControlProtocol::update_led_state, this), this);
session->RecordStateChanged.connect (session_connections, MISSING_INVALIDATOR, boost::bind (&WiimoteControlProtocol::update_led_state, this), this);
// start the Wiimote control UI; it will run in its own thread context
BaseUI::run ();
DEBUG_TRACE (DEBUG::WiimoteControl, "WiimoteControlProtocol::start done\n");
return 0;
}
int
WiimoteControlProtocol::stop ()
{
DEBUG_TRACE (DEBUG::WiimoteControl, "WiimoteControlProtocol::stop init\n");
// stop wiimote discovery, just in case
stop_wiimote_discovery ();
// close and reset the wiimote handle
if (wiimote) {
cwiid_close (wiimote);
wiimote = 0;
callback_thread_registered = false;
}
// stop the Wiimote control UI
BaseUI::quit ();
// no longer update the LEDs
session_connections.drop_connections ();
DEBUG_TRACE (DEBUG::WiimoteControl, "WiimoteControlProtocol::stop done\n");
return 0;
}
void
WiimoteControlProtocol::thread_init ()
{
DEBUG_TRACE (DEBUG::WiimoteControl, "WiimoteControlProtocol::thread_init init\n");
pthread_set_name (X_("wiimote"));
// allow to make requests to the GUI and RT thread(s)
PBD::notify_event_loops_about_thread_creation (pthread_self (), X_("wiimote"), 2048);
BasicUI::register_thread ("wiimote");
// connect a Wiimote
start_wiimote_discovery ();
DEBUG_TRACE (DEBUG::WiimoteControl, "WiimoteControlProtocol::thread_init done\n");
}
void
WiimoteControlProtocol::start_wiimote_discovery ()
{
DEBUG_TRACE (DEBUG::WiimoteControl, "WiimoteControlProtocol::start_wiimote_discovery init\n");
// connect to the Wiimote using an idle source
Glib::RefPtr<Glib::IdleSource> source = Glib::IdleSource::create ();
source->connect (sigc::mem_fun (*this, &WiimoteControlProtocol::connect_idle));
source->attach (_main_loop->get_context ());
// grab a reference on the underlying idle source to keep it around
idle_source = source->gobj ();
g_source_ref (idle_source);
DEBUG_TRACE (DEBUG::WiimoteControl, "WiimoteControlProtocol::start_wiimote_discovery done\n");
}
void
WiimoteControlProtocol::stop_wiimote_discovery ()
{
DEBUG_TRACE (DEBUG::WiimoteControl, "WiimoteControlProtocol::stop_wiimote_discovery init\n");
if (idle_source) {
g_source_unref (idle_source);
idle_source = 0;
}
DEBUG_TRACE (DEBUG::WiimoteControl, "WiimoteControlProtocol::stop_wiimote_discovery done\n");
}
bool
WiimoteControlProtocol::connect_idle ()
{
DEBUG_TRACE (DEBUG::WiimoteControl, "WiimoteControlProtocol::connect_idle init\n");
bool retry = false;
if (connect_wiimote ()) {
stop_wiimote_discovery ();
}
DEBUG_TRACE (DEBUG::WiimoteControl, "WiimoteControlProtocol::connect_idle done\n");
return retry;
}
bool
WiimoteControlProtocol::connect_wiimote ()
{
// abort the discovery and do nothing else if we already have a Wiimote
if (wiimote) {
return true;
}
bool success = false;
// if we don't have a Wiimote yet, try to discover it; if that
// fails, wait for a short period of time and try again
for (int i = 0; i < 5; ++i) {
cerr << "Wiimote: Not discovered yet, press 1+2 to connect" << endl;
bdaddr_t bdaddr = {{ 0, 0, 0, 0, 0, 0 }};
wiimote = cwiid_open (&bdaddr, 0);
callback_thread_registered = false;
if (wiimote) {
// a Wiimote was discovered
cerr << "Wiimote: Connected successfully" << endl;
// attach the WiimoteControlProtocol object to the Wiimote handle
if (cwiid_set_data (wiimote, this)) {
cerr << "Wiimote: Failed to attach control protocol" << endl;
} else {
success = true;
// clear the last button state to start processing events cleanly
button_state = 0;
break;
}
}
}
// enable message based communication with the Wiimote
if (success && cwiid_enable (wiimote, CWIID_FLAG_MESG_IFC)) {
cerr << "Wiimote: Failed to enable message based communication" << endl;
success = false;
}
// enable button events to be received from the Wiimote
if (success && cwiid_command (wiimote, CWIID_CMD_RPT_MODE, CWIID_RPT_BTN)) {
cerr << "Wiimote: Failed to enable button events" << endl;
success = false;
}
// receive an event for every single button pressed, not just when
// a different button was pressed than before
if (success && cwiid_enable (wiimote, CWIID_FLAG_REPEAT_BTN)) {
cerr << "Wiimote: Failed to enable repeated button events" << endl;
success = false;
}
// be notified of new input events
if (success && cwiid_set_mesg_callback (wiimote, wiimote_control_protocol_mesg_callback)) {
}
// reset Wiimote handle if the configuration failed
if (!success && wiimote) {
cwiid_close (wiimote);
wiimote = 0;
callback_thread_registered = false;
}
return success;
}
void
WiimoteControlProtocol::update_led_state ()
{
DEBUG_TRACE (DEBUG::WiimoteControl, "WiimoteControlProtocol::update_led_state init\n");
uint8_t state = 0;
// do nothing if we do not have a Wiimote
if (!wiimote) {
DEBUG_TRACE (DEBUG::WiimoteControl, "WiimoteControlProtocol::update_led_state no wiimote connected\n");
return;
}
// enable LED1 if Ardour is playing
if (session->transport_rolling ()) {
DEBUG_TRACE (DEBUG::WiimoteControl, "WiimoteControlProtocol::update_led_state playing, activate LED1\n");
state |= CWIID_LED1_ON;
}
// enable LED4 if Ardour is recording
if (session->actively_recording ()) {
DEBUG_TRACE (DEBUG::WiimoteControl, "WiimoteControlProtocol::update_led_state recording, activate LED4\n");
state |= CWIID_LED4_ON;
}
// apply the LED state
cwiid_set_led (wiimote, state);
DEBUG_TRACE (DEBUG::WiimoteControl, "WiimoteControlProtocol::update_led_state done\n");
}
void
WiimoteControlProtocol::wiimote_callback (int mesg_count, union cwiid_mesg mesg[])
{
// register the cwiid callback thread if that hasn't happened yet
if (!callback_thread_registered) {
BasicUI::register_thread ("wiimote callback");
callback_thread_registered = true;
}
for (int i = 0; i < mesg_count; i++) {
// restart Wiimote discovery when receiving errors
if (mesg[i].type == CWIID_MESG_ERROR) {
cerr << "Wiimote: disconnected" << endl;
cwiid_close (wiimote);
wiimote = 0;
callback_thread_registered = false;
start_wiimote_discovery ();
return;
}
// skip non-button events
if (mesg[i].type != CWIID_MESG_BTN) {
continue;
}
// drop buttons from the event that were already pressed before
uint16_t b = mesg[i].btn_mesg.buttons & ~button_state;
// remember new button state
button_state = mesg[i].btn_mesg.buttons;
if (button_state & CWIID_BTN_B) {
// B + A = abort recording and jump back
if (b & CWIID_BTN_A) {
access_action ("Transport/ToggleRollForgetCapture");
}
// B + left = move playhead to previous region boundary
if (b & CWIID_BTN_LEFT) {
access_action ("Editor/playhead-to-previous-region-boundary");
}
// B + right = move playhead to next region boundary
if (b & CWIID_BTN_RIGHT) {
access_action ("Editor/playhead-to-next-region-boundary");
}
// B + up = move playhead to next marker
if (b & CWIID_BTN_UP) {
next_marker ();
}
// B + down = move playhead to prev marker
if (b & CWIID_BTN_DOWN) {
prev_marker ();
}
// B + Home = add marker at playhead
if (b & CWIID_BTN_HOME) {
access_action ("Editor/add-location-from-playhead");
}
// B + minus = move playhead to the start
if (b & CWIID_BTN_MINUS) {
access_action ("Transport/GotoStart");
}
// B + plus = move playhead to the end
if (b & CWIID_BTN_PLUS) {
access_action ("Transport/GotoEnd");
}
} else {
// A = toggle playback
if (b & CWIID_BTN_A) {
access_action ("Transport/ToggleRoll");
}
// 1 = toggle recording on the current track
if (b & CWIID_BTN_1) {
access_action ("Editor/track-record-enable-toggle");
}
// 2 = enable recording in general
if (b & CWIID_BTN_2) {
rec_enable_toggle ();
}
// left = move playhead back a bit
if (b & CWIID_BTN_LEFT) {
access_action ("Editor/nudge-playhead-backward");
}
// right = move playhead forward a bit
if (b & CWIID_BTN_RIGHT) {
access_action ("Editor/nudge-playhead-forward");
}
// up = select previous track
if (b & CWIID_BTN_UP) {
access_action ("Editor/select-prev-route");
}
// down = select next track
if (b & CWIID_BTN_DOWN) {
access_action ("Editor/select-next-route");
}
// + = zoom in
if (b & CWIID_BTN_PLUS) {
access_action ("Editor/temporal-zoom-in");
}
// - = zoom out
if (b & CWIID_BTN_MINUS) {
access_action ("Editor/temporal-zoom-out");
}
// home = no-op
if (b & CWIID_BTN_HOME) {
access_action ("Editor/playhead-to-edit");
}
}
}
}
void
wiimote_control_protocol_mesg_callback (cwiid_wiimote_t *wiimote, int mesg_count, union cwiid_mesg mesg[], timespec *)
{
DEBUG_TRACE (DEBUG::WiimoteControl, "WiimoteControlProtocol::mesg_callback init\n");
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WiimoteControlProtocol *protocol = reinterpret_cast<WiimoteControlProtocol*> (const_cast<void*>(cwiid_get_data (wiimote)));
if (protocol) {
protocol->wiimote_callback (mesg_count, mesg);
}
DEBUG_TRACE (DEBUG::WiimoteControl, "WiimoteControlProtocol::mesg_callback done\n");
}
void*
WiimoteControlProtocol::request_factory (uint32_t num_requests)
{
/* AbstractUI<T>::request_buffer_factory() is a template method only
instantiated in this source module. To provide something visible for
use in the interface/descriptor, we have this static method that is
template-free.
*/
return request_buffer_factory (num_requests);
}