First stab at attaching native event dispatching.

Provides the basic infrastructure for a
NativeActivity's native code to get an object representing
its event stream that can be used to read input events.

Still work to do, probably some API changes, and reasonable
default key handling (so that for example back will still
work).

Change-Id: I6db891bc35dc9683181d7708eaed552b955a077e

1 files changed, 233 insertions, 0 deletions

diff --git a/native/android/input.cpp b/native/android/input.cpp
new file mode 100644
index 0000000..38d8567
--- /dev/null
+++ b/native/android/input.cpp
@@ -0,0 +1,233 @@
+/*
+ * Copyright (C) 2009 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "input"
+#include <utils/Log.h>
+
+#include <android/input.h>
+#include <ui/Input.h>
+#include <ui/InputTransport.h>
+
+#include <poll.h>
+
+using android::InputEvent;
+using android::KeyEvent;
+using android::MotionEvent;
+
+int32_t input_event_get_type(const input_event_t* event) {
+    return static_cast<const InputEvent*>(event)->getType();
+}
+
+int32_t input_event_get_device_id(const input_event_t* event) {
+    return static_cast<const InputEvent*>(event)->getDeviceId();
+}
+
+int32_t input_event_get_nature(const input_event_t* event) {
+    return static_cast<const InputEvent*>(event)->getNature();
+}
+
+int32_t key_event_get_action(const input_event_t* key_event) {
+    return static_cast<const KeyEvent*>(key_event)->getAction();
+}
+
+int32_t key_event_get_flags(const input_event_t* key_event) {
+    return static_cast<const KeyEvent*>(key_event)->getFlags();
+}
+
+int32_t key_event_get_key_code(const input_event_t* key_event) {
+    return static_cast<const KeyEvent*>(key_event)->getKeyCode();
+}
+
+int32_t key_event_get_scan_code(const input_event_t* key_event) {
+    return static_cast<const KeyEvent*>(key_event)->getScanCode();
+}
+
+int32_t key_event_get_meta_state(const input_event_t* key_event) {
+    return static_cast<const KeyEvent*>(key_event)->getMetaState();
+}
+int32_t key_event_get_repeat_count(const input_event_t* key_event) {
+    return static_cast<const KeyEvent*>(key_event)->getRepeatCount();
+}
+
+int64_t key_event_get_down_time(const input_event_t* key_event) {
+    return static_cast<const KeyEvent*>(key_event)->getDownTime();
+}
+
+int64_t key_event_get_event_time(const input_event_t* key_event) {
+    return static_cast<const KeyEvent*>(key_event)->getEventTime();
+}
+
+int32_t motion_event_get_action(const input_event_t* motion_event) {
+    return static_cast<const MotionEvent*>(motion_event)->getAction();
+}
+
+int32_t motion_event_get_meta_state(const input_event_t* motion_event) {
+    return static_cast<const MotionEvent*>(motion_event)->getMetaState();
+}
+
+int32_t motion_event_get_edge_flags(const input_event_t* motion_event) {
+    return reinterpret_cast<const MotionEvent*>(motion_event)->getEdgeFlags();
+}
+
+int64_t motion_event_get_down_time(const input_event_t* motion_event) {
+    return static_cast<const MotionEvent*>(motion_event)->getDownTime();
+}
+
+int64_t motion_event_get_event_time(const input_event_t* motion_event) {
+    return static_cast<const MotionEvent*>(motion_event)->getEventTime();
+}
+
+float motion_event_get_x_offset(const input_event_t* motion_event) {
+    return static_cast<const MotionEvent*>(motion_event)->getXOffset();
+}
+
+float motion_event_get_y_offset(const input_event_t* motion_event) {
+    return static_cast<const MotionEvent*>(motion_event)->getYOffset();
+}
+
+float motion_event_get_x_precision(const input_event_t* motion_event) {
+    return static_cast<const MotionEvent*>(motion_event)->getXPrecision();
+}
+
+float motion_event_get_y_precision(const input_event_t* motion_event) {
+    return static_cast<const MotionEvent*>(motion_event)->getYPrecision();
+}
+
+size_t motion_event_get_pointer_count(const input_event_t* motion_event) {
+    return static_cast<const MotionEvent*>(motion_event)->getPointerCount();
+}
+
+int32_t motion_event_get_pointer_id(const input_event_t* motion_event, size_t pointer_index) {
+    return static_cast<const MotionEvent*>(motion_event)->getPointerId(pointer_index);
+}
+
+float motion_event_get_raw_x(const input_event_t* motion_event, size_t pointer_index) {
+    return static_cast<const MotionEvent*>(motion_event)->getRawX(pointer_index);
+}
+
+float motion_event_get_raw_y(const input_event_t* motion_event, size_t pointer_index) {
+    return static_cast<const MotionEvent*>(motion_event)->getRawY(pointer_index);
+}
+
+float motion_event_get_x(const input_event_t* motion_event, size_t pointer_index) {
+    return static_cast<const MotionEvent*>(motion_event)->getX(pointer_index);
+}
+
+float motion_event_get_y(const input_event_t* motion_event, size_t pointer_index) {
+    return static_cast<const MotionEvent*>(motion_event)->getY(pointer_index);
+}
+
+float motion_event_get_pressure(const input_event_t* motion_event, size_t pointer_index) {
+    return static_cast<const MotionEvent*>(motion_event)->getPressure(pointer_index);
+}
+
+float motion_event_get_size(const input_event_t* motion_event, size_t pointer_index) {
+    return static_cast<const MotionEvent*>(motion_event)->getSize(pointer_index);
+}
+
+size_t motion_event_get_history_size(const input_event_t* motion_event) {
+    return static_cast<const MotionEvent*>(motion_event)->getHistorySize();
+}
+
+int64_t motion_event_get_historical_event_time(input_event_t* motion_event,
+        size_t history_index) {
+    return static_cast<const MotionEvent*>(motion_event)->getHistoricalEventTime(
+            history_index);
+}
+
+float motion_event_get_historical_raw_x(input_event_t* motion_event, size_t pointer_index,
+        size_t history_index) {
+    return static_cast<const MotionEvent*>(motion_event)->getHistoricalRawX(
+            pointer_index, history_index);
+}
+
+float motion_event_get_historical_raw_y(input_event_t* motion_event, size_t pointer_index,
+        size_t history_index) {
+    return static_cast<const MotionEvent*>(motion_event)->getHistoricalRawY(
+            pointer_index, history_index);
+}
+
+float motion_event_get_historical_x(input_event_t* motion_event, size_t pointer_index,
+        size_t history_index) {
+    return static_cast<const MotionEvent*>(motion_event)->getHistoricalX(
+            pointer_index, history_index);
+}
+
+float motion_event_get_historical_y(input_event_t* motion_event, size_t pointer_index,
+        size_t history_index) {
+    return static_cast<const MotionEvent*>(motion_event)->getHistoricalY(
+            pointer_index, history_index);
+}
+
+float motion_event_get_historical_pressure(input_event_t* motion_event, size_t pointer_index,
+        size_t history_index) {
+    return static_cast<const MotionEvent*>(motion_event)->getHistoricalPressure(
+            pointer_index, history_index);
+}
+
+float motion_event_get_historical_size(input_event_t* motion_event, size_t pointer_index,
+        size_t history_index) {
+    return static_cast<const MotionEvent*>(motion_event)->getHistoricalSize(
+            pointer_index, history_index);
+}
+
+int input_queue_get_fd(input_queue_t* queue) {
+    return queue->getConsumer().getChannel()->getReceivePipeFd();
+}
+
+int input_queue_has_events(input_queue_t* queue) {
+    struct pollfd pfd;
+    
+    pfd.fd = queue->getConsumer().getChannel()->getReceivePipeFd();
+    pfd.events = POLLIN;
+    pfd.revents = 0;
+    
+    int nfd = poll(&pfd, 1, 0);
+    if (nfd <= 0) return nfd;
+    return pfd.revents == POLLIN ? 1 : -1;
+}
+
+int32_t input_queue_get_event(input_queue_t* queue, input_event_t** outEvent) {
+    *outEvent = NULL;
+    
+    int32_t res = queue->getConsumer().receiveDispatchSignal();
+    if (res != android::OK) {
+        LOGE("channel '%s' ~ Failed to receive dispatch signal.  status=%d",
+                queue->getConsumer().getChannel()->getName().string(), res);
+        return -1;
+    }
+    
+    InputEvent* myEvent = NULL;
+    res = queue->consume(&myEvent);
+    if (res != android::OK) {
+        LOGW("channel '%s' ~ Failed to consume input event.  status=%d",
+                queue->getConsumer().getChannel()->getName().string(), res);
+        queue->getConsumer().sendFinishedSignal();
+        return -1;
+    }
+    
+    *outEvent = myEvent;
+    return 0;
+}
+
+void input_queue_finish_event(input_queue_t* queue, input_event_t* event,
+        int handled) {
+    int32_t res = queue->getConsumer().sendFinishedSignal();
+    if (res != android::OK) {
+        LOGW("Failed to send finished signal on channel '%s'.  status=%d",
+                queue->getConsumer().getChannel()->getName().string(), res);
+    }
+}