gecko-dev/hal/gonk/GonkSensorsHelpers.cpp
Thomas Zimmermann 24f81344e9 Bug 1194721: Add helpers for Gonk sensors daemon, r=gsvelto
This patch adds helpers for using the Gonk sensors daemon. The types
and functions allow for packing and unpacking messages of the daemon's
IPC protocol.
2016-02-04 12:35:13 +01:00

113 lines
2.9 KiB
C++

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=2 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
* You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "GonkSensorsHelpers.h"
namespace mozilla {
namespace hal {
//
// Unpacking
//
nsresult
UnpackPDU(DaemonSocketPDU& aPDU, SensorsEvent& aOut)
{
nsresult rv = UnpackPDU(aPDU, aOut.mType);
if (NS_FAILED(rv)) {
return rv;
}
rv = UnpackPDU(aPDU, aOut.mTimestamp);
if (NS_FAILED(rv)) {
return rv;
}
rv = UnpackPDU(aPDU, aOut.mStatus);
if (NS_FAILED(rv)) {
return rv;
}
size_t i = 0;
switch (aOut.mType) {
case SENSORS_TYPE_MAGNETIC_FIELD_UNCALIBRATED:
case SENSORS_TYPE_GYROSCOPE_UNCALIBRATED:
/* 6 data values */
rv = UnpackPDU(aPDU, aOut.mData.mFloat[i++]);
if (NS_FAILED(rv)) {
return rv;
}
/* fall through */
case SENSORS_TYPE_ROTATION_VECTOR:
case SENSORS_TYPE_GAME_ROTATION_VECTOR:
case SENSORS_TYPE_GEOMAGNETIC_ROTATION_VECTOR:
/* 5 data values */
rv = UnpackPDU(aPDU, aOut.mData.mFloat[i++]);
if (NS_FAILED(rv)) {
return rv;
}
rv = UnpackPDU(aPDU, aOut.mData.mFloat[i++]);
if (NS_FAILED(rv)) {
return rv;
}
/* fall through */
case SENSORS_TYPE_ACCELEROMETER:
case SENSORS_TYPE_GEOMAGNETIC_FIELD:
case SENSORS_TYPE_ORIENTATION:
case SENSORS_TYPE_GYROSCOPE:
case SENSORS_TYPE_GRAVITY:
case SENSORS_TYPE_LINEAR_ACCELERATION:
/* 3 data values */
rv = UnpackPDU(aPDU, aOut.mData.mFloat[i++]);
if (NS_FAILED(rv)) {
return rv;
}
rv = UnpackPDU(aPDU, aOut.mData.mFloat[i++]);
if (NS_FAILED(rv)) {
return rv;
}
/* fall through */
case SENSORS_TYPE_LIGHT:
case SENSORS_TYPE_PRESSURE:
case SENSORS_TYPE_TEMPERATURE:
case SENSORS_TYPE_PROXIMITY:
case SENSORS_TYPE_RELATIVE_HUMIDITY:
case SENSORS_TYPE_AMBIENT_TEMPERATURE:
case SENSORS_TYPE_HEART_RATE:
case SENSORS_TYPE_TILT_DETECTOR:
case SENSORS_TYPE_WAKE_GESTURE:
case SENSORS_TYPE_GLANCE_GESTURE:
case SENSORS_TYPE_PICK_UP_GESTURE:
case SENSORS_TYPE_WRIST_TILT_GESTURE:
case SENSORS_TYPE_SIGNIFICANT_MOTION:
case SENSORS_TYPE_STEP_DETECTED:
/* 1 data value */
rv = UnpackPDU(aPDU, aOut.mData.mFloat[i++]);
if (NS_FAILED(rv)) {
return rv;
}
break;
case SENSORS_TYPE_STEP_COUNTER:
/* 1 data value */
rv = UnpackPDU(aPDU, aOut.mData.mUint[0]);
if (NS_FAILED(rv)) {
return rv;
}
break;
default:
if (MOZ_HAL_IPC_UNPACK_WARN_IF(true, SensorsEvent)) {
return NS_ERROR_ILLEGAL_VALUE;
}
}
rv = UnpackPDU(aPDU, aOut.mDeliveryMode);
if (NS_FAILED(rv)) {
return rv;
}
return NS_OK;
}
} // namespace hal
} // namespace mozilla