Bug 895665 - Gonk support for dev input audio jack events. r=mwu

widget/gonk/nsAppShell.cpp

@@ -52,6 +52,7 @@
 #include "libui/EventHub.h"
 #include "libui/InputReader.h"
 #include "libui/InputDispatcher.h"
+#include "cutils/properties.h"
 
 #include "GeckoProfiler.h"
 
@@ -78,6 +79,9 @@ bool gDrawRequest = false;
 static nsAppShell *gAppShell = NULL;
 static int epollfd = 0;
 static int signalfds[2] = {0};
+static bool sDevInputAudioJack;
+static int32_t sHeadphoneState;
+static int32_t sMicrophoneState;
 
 NS_IMPL_ISUPPORTS_INHERITED1(nsAppShell, nsBaseAppShell, nsIObserver)
 
@@ -245,6 +249,41 @@ maybeSendKeyEvent(int keyCode, bool pressed, uint64_t timeMs)
     }
 }
 
+class SwitchEventRunnable : public nsRunnable {
+public:
+    SwitchEventRunnable(hal::SwitchEvent& aEvent) : mEvent(aEvent)
+    {}
+
+    NS_IMETHOD Run()
+    {
+        hal::NotifySwitchChange(mEvent);
+        return NS_OK;
+    }
+private:
+    hal::SwitchEvent mEvent;
+};
+
+static void
+updateHeadphoneSwitch()
+{
+    hal::SwitchEvent event;
+
+    switch (sHeadphoneState) {
+    case AKEY_STATE_UP:
+        event.status() = hal::SWITCH_STATE_OFF;
+        break;
+    case AKEY_STATE_DOWN:
+        event.status() = sMicrophoneState == AKEY_STATE_DOWN ?
+            hal::SWITCH_STATE_HEADPHONE : hal::SWITCH_STATE_HEADSET;
+        break;
+    default:
+        return;
+    }
+
+    event.device() = hal::SWITCH_HEADPHONES;
+    NS_DispatchToMainThread(new SwitchEventRunnable(event));
+}
+
 class GeckoPointerController : public PointerControllerInterface {
     float mX;
     float mY;
@@ -553,6 +592,19 @@ GeckoInputDispatcher::notifyMotion(const NotifyMotionArgs* args)
 
 void GeckoInputDispatcher::notifySwitch(const NotifySwitchArgs* args)
 {
+    if (!sDevInputAudioJack)
+        return;
+
+    switch (args->switchCode) {
+    case SW_HEADPHONE_INSERT:
+        sHeadphoneState = args->switchValue;
+        updateHeadphoneSwitch();
+        break;
+    case SW_MICROPHONE_INSERT:
+        sMicrophoneState = args->switchValue;
+        updateHeadphoneSwitch();
+        break;
+    }
 }
 
 void GeckoInputDispatcher::notifyDeviceReset(const NotifyDeviceResetArgs* args)
@@ -661,6 +713,12 @@ nsAppShell::Observe(nsISupports* aSubject,
         return nsBaseAppShell::Observe(aSubject, aTopic, aData);
     }
 
+    if (sDevInputAudioJack) {
+        sHeadphoneState  = mReader->getSwitchState(-1, AINPUT_SOURCE_SWITCH, SW_HEADPHONE_INSERT);
+        sMicrophoneState = mReader->getSwitchState(-1, AINPUT_SOURCE_SWITCH, SW_MICROPHONE_INSERT);
+        updateHeadphoneSwitch();
+    }
+
     mEnableDraw = true;
     NotifyEvent();
     return NS_OK;
@@ -680,6 +738,12 @@ nsAppShell::Exit()
 void
 nsAppShell::InitInputDevices()
 {
+    char value[PROPERTY_VALUE_MAX];
+    property_get("ro.moz.devinputjack", value, "0");
+    sDevInputAudioJack = !strcmp(value, "1");
+    sHeadphoneState = AKEY_STATE_UNKNOWN;
+    sMicrophoneState = AKEY_STATE_UNKNOWN;
+
     mEventHub = new EventHub();
     mReaderPolicy = new GeckoInputReaderPolicy();
     mReaderPolicy->setDisplayInfo();