Increase device orientation event frequency to 60 Hz. Change constants

content/browser/device_sensors/sensor_manager_android.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/browser/device_sensors/sensor_manager_android.h"
 
 #include <string.h>
 
 #include "base/android/jni_android.h"
 #include "base/memory/singleton.h"
@@ skipping 132 matching lines @@
   if (!device_light_buffer_)
     return;
 
   device_light_buffer_->seqlock.WriteBegin();
   device_light_buffer_->data.value = value;
   device_light_buffer_->seqlock.WriteEnd();
 }
 
 bool SensorManagerAndroid::Start(EventType event_type) {
   DCHECK(!device_sensors_.is_null());
-  int rate_in_milliseconds = (event_type == kTypeLight)
-                                 ? kLightSensorIntervalMillis
-                                 : kInertialSensorIntervalMillis;
+  int rate_in_microseconds = (event_type == kTypeLight)

[timvolodine, 2014/09/26 13:09:16]

int64?

+                                 ? kLightSensorIntervalMicroseconds
+                                 : kInertialSensorIntervalMicroseconds;
   return Java_DeviceSensors_start(AttachCurrentThread(),
                                   device_sensors_.obj(),
                                   reinterpret_cast<intptr_t>(this),
                                   static_cast<jint>(event_type),
-                                  rate_in_milliseconds);
+                                  rate_in_microseconds);

[timvolodine, 2014/09/26 13:09:16]

also if you are using int64, the java interface should be a long.

 }
 
 void SensorManagerAndroid::Stop(EventType event_type) {
   DCHECK(!device_sensors_.is_null());
   Java_DeviceSensors_stop(AttachCurrentThread(),
                           device_sensors_.obj(),
                           static_cast<jint>(event_type));
 }
 
 int SensorManagerAndroid::GetNumberActiveDeviceMotionSensors() {
@@ skipping 72 matching lines @@
     }
   }
 }
 
 void SensorManagerAndroid::CheckMotionBufferReadyToRead() {
   if (received_motion_data_[RECEIVED_MOTION_DATA_ACCELERATION] +
       received_motion_data_[RECEIVED_MOTION_DATA_ACCELERATION_INCL_GRAVITY] +
       received_motion_data_[RECEIVED_MOTION_DATA_ROTATION_RATE] ==
       number_active_device_motion_sensors_) {
     device_motion_buffer_->seqlock.WriteBegin();
-    device_motion_buffer_->data.interval = kInertialSensorIntervalMillis;
+    device_motion_buffer_->data.interval =
+        kInertialSensorIntervalMicroseconds / 1000.;
     device_motion_buffer_->seqlock.WriteEnd();
     SetMotionBufferReadyStatus(true);
 
     UMA_HISTOGRAM_BOOLEAN("InertialSensor.AccelerometerAndroidAvailable",
         received_motion_data_[RECEIVED_MOTION_DATA_ACCELERATION] > 0);
     UMA_HISTOGRAM_BOOLEAN(
         "InertialSensor.AccelerometerIncGravityAndroidAvailable",
         received_motion_data_[RECEIVED_MOTION_DATA_ACCELERATION_INCL_GRAVITY]
         > 0);
     UMA_HISTOGRAM_BOOLEAN("InertialSensor.GyroscopeAndroidAvailable",
@@ skipping 52 matching lines @@
   {
     base::AutoLock autolock(orientation_buffer_lock_);
     if (device_orientation_buffer_) {
       SetOrientationBufferReadyStatus(false);
       device_orientation_buffer_ = NULL;
     }
   }
 }
 
 }  // namespace content