summaryrefslogtreecommitdiff
path: root/services/sensorservice/LinearAccelerationSensor.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'services/sensorservice/LinearAccelerationSensor.cpp')
-rw-r--r--services/sensorservice/LinearAccelerationSensor.cpp86
1 files changed, 86 insertions, 0 deletions
diff --git a/services/sensorservice/LinearAccelerationSensor.cpp b/services/sensorservice/LinearAccelerationSensor.cpp
new file mode 100644
index 0000000..2dc12dc
--- /dev/null
+++ b/services/sensorservice/LinearAccelerationSensor.cpp
@@ -0,0 +1,86 @@
+/*
+ * Copyright (C) 2010 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.
+ */
+
+#include <stdint.h>
+#include <math.h>
+#include <sys/types.h>
+
+#include <utils/Errors.h>
+
+#include <hardware/sensors.h>
+
+#include "LinearAccelerationSensor.h"
+
+namespace android {
+// ---------------------------------------------------------------------------
+
+LinearAccelerationSensor::LinearAccelerationSensor(sensor_t const* list, size_t count)
+ : mSensorDevice(SensorDevice::getInstance()),
+ mGravitySensor(list, count)
+{
+ mData[0] = mData[1] = mData[2] = 0;
+}
+
+bool LinearAccelerationSensor::process(sensors_event_t* outEvent,
+ const sensors_event_t& event)
+{
+ bool result = mGravitySensor.process(outEvent, event);
+ if (result) {
+ if (event.type == SENSOR_TYPE_ACCELEROMETER) {
+ mData[0] = event.acceleration.x;
+ mData[1] = event.acceleration.y;
+ mData[2] = event.acceleration.z;
+ }
+ outEvent->data[0] = mData[0] - outEvent->data[0];
+ outEvent->data[1] = mData[1] - outEvent->data[1];
+ outEvent->data[2] = mData[2] - outEvent->data[2];
+ outEvent->sensor = '_lin';
+ outEvent->type = SENSOR_TYPE_LINEAR_ACCELERATION;
+ }
+ return result;
+}
+
+bool LinearAccelerationSensor::isEnabled() const {
+ return mGravitySensor.isEnabled();
+}
+
+status_t LinearAccelerationSensor::activate(void* ident, bool enabled) {
+ return mGravitySensor.activate(ident, enabled);
+}
+
+status_t LinearAccelerationSensor::setDelay(void* ident, int handle, int64_t ns) {
+ return mGravitySensor.setDelay(ident, handle, ns);
+}
+
+Sensor LinearAccelerationSensor::getSensor() const {
+ Sensor gsensor(mGravitySensor.getSensor());
+ sensor_t hwSensor;
+ hwSensor.name = "Linear Acceleration Sensor";
+ hwSensor.vendor = "Google Inc.";
+ hwSensor.version = 1;
+ hwSensor.handle = '_lin';
+ hwSensor.type = SENSOR_TYPE_LINEAR_ACCELERATION;
+ hwSensor.maxRange = gsensor.getMaxValue();
+ hwSensor.resolution = gsensor.getResolution();
+ hwSensor.power = gsensor.getPowerUsage();
+ hwSensor.minDelay = gsensor.getMinDelay();
+ Sensor sensor(&hwSensor);
+ return sensor;
+}
+
+// ---------------------------------------------------------------------------
+}; // namespace android
+