Add new native Looper API.

This allows us to avoid exposing the file descriptor of
the event queue; instead, you attach an event queue to
a looper.  This will also should allow native apps to be
written without the need for a separate thread, by attaching
the event queue to the main thread's looper and scheduling
their own messages there.

Change-Id: I38489282635895ae2cbfacb88599c1b1cad9b239

1 files changed, 11 insertions, 2 deletions

diff --git a/native/android/input.cpp b/native/android/input.cpp
index 84988403e301..015a1ced432b 100644
--- a/native/android/input.cpp
+++ b/native/android/input.cpp
@@ -20,6 +20,7 @@
 #include <android/input.h>
 #include <ui/Input.h>
 #include <ui/InputTransport.h>
+#include <utils/PollLoop.h>
 
 #include <poll.h>
 
@@ -184,8 +185,16 @@ float AMotionEvent_getHistoricalSize(AInputEvent* motion_event, size_t pointer_i
             pointer_index, history_index);
 }
 
-int AInputQueue_getFd(AInputQueue* queue) {
-    return queue->getConsumer().getChannel()->getReceivePipeFd();
+void AInputQueue_attachLooper(AInputQueue* queue, ALooper* looper,
+        ALooper_callbackFunc callback, void* data) {
+    queue->setPollLoop(static_cast<android::PollLoop*>(looper));
+    ALooper_setCallback(looper, queue->getConsumer().getChannel()->getReceivePipeFd(),
+            POLLIN, callback, data);
+}
+
+void AInputQueue_detachLooper(AInputQueue* queue) {
+    queue->getPollLoop()->removeCallback(
+            queue->getConsumer().getChannel()->getReceivePipeFd());
 }
 
 int AInputQueue_hasEvents(AInputQueue* queue) {