From 47e8c037f730a5a6187f84f9b3b5d48952dfd1af Mon Sep 17 00:00:00 2001
From: Nikolay Tischenko <niktischenko@gmail.com>
Date: Sat, 20 Nov 2010 03:11:31 +0600
Subject: [PATCH] Added Bluetooth AVRCP support via HAL/DBus

---
 src/dbusadaptor.cpp |   24 ++++++++++++++++++++++++
 src/dbusadaptor.h   |    8 ++++++++
 2 files changed, 32 insertions(+)

diff --git a/src/dbusadaptor.cpp b/src/dbusadaptor.cpp
index 25b90e0..64a9d91 100644
--- a/src/dbusadaptor.cpp
+++ b/src/dbusadaptor.cpp
@@ -25,6 +25,7 @@
 #include <QtCore/QString>
 #include <QtCore/QStringList>
 #include <QtCore/QVariant>
+#include <QDebug>
 
 /*
  * Implementation of adaptor class DBusAdaptop
@@ -35,6 +36,12 @@ DBusAdaptop::DBusAdaptop(QObject *parent)
 {
     // constructor
     setAutoRelaySignals(true);
+    // handling signals from bluetooth headset
+    _time = QTime::currentTime();
+    if (!QDBusConnection::systemBus().connect(QString(), QString(),
+	"org.freedesktop.Hal.Device", "Condition", this, SLOT(processBTSignal(QString, QString)))) {
+	    qWarning() << "Can not connect to HAL";
+    }
 }
 
 DBusAdaptop::~DBusAdaptop()
@@ -90,3 +97,20 @@ void DBusAdaptop::toggle()
     QMetaObject::invokeMethod(parent(), "toggle");
 }
 
+void DBusAdaptop::processBTSignal(QString event, QString state) {
+	QTime t = QTime::currentTime();
+	long msec = _time.msecsTo(t);
+	if (msec > _DBUS_ACTION_TIMEOUT_) {
+		if (event == "ButtonPressed") {
+			if (state == "next-song") {
+				QMetaObject::invokeMethod(parent(), "next");
+			} else if (state == "previous-song") {
+				QMetaObject::invokeMethod(parent(), "prev");
+			} else if (state == "play-cd" || state == "pause-cd") {
+				QMetaObject::invokeMethod(parent(), "toggle");
+			}
+		}
+	}
+	_time = t;
+}
+
diff --git a/src/dbusadaptor.h b/src/dbusadaptor.h
index 30ebd0b..9c82b67 100644
--- a/src/dbusadaptor.h
+++ b/src/dbusadaptor.h
@@ -22,6 +22,10 @@
 
 #include <QtCore/QObject>
 #include <QtDBus/QtDBus>
+#include <QTime>
+
+#define _DBUS_ACTION_TIMEOUT_ (500)
+
 class QByteArray;
 template<class T> class QList;
 template<class Key, class Value> class QMap;
@@ -74,7 +78,11 @@ public Q_SLOTS: // METHODS
     Q_NOREPLY void stop();
     QString title();
     Q_NOREPLY void toggle();
+
+    void processBTSignal(QString, QString);
 Q_SIGNALS: // SIGNALS
+private:
+	QTime _time;
 };
 
 #endif
-- 
1.7.9.5