first step at implementing the native sensor support
in this commit:
- implemented the C stub
- implemented the binder interfaces involved
- implemented most of the C++ client side
missing:
- SensorManager cannot connect to the SensorServer yet
(because there is no SensorServer yet)
Change-Id: I75010cbeef31c98d6fa62fd5d388dcef87c2636b
diff --git a/libs/gui/Sensor.cpp b/libs/gui/Sensor.cpp
new file mode 100644
index 0000000..1fdd285
--- /dev/null
+++ b/libs/gui/Sensor.cpp
@@ -0,0 +1,165 @@
+/*
+ * 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 <sys/types.h>
+
+#include <utils/Errors.h>
+#include <utils/String8.h>
+#include <utils/Flattenable.h>
+
+#include <hardware/sensors.h>
+
+#include <gui/Sensor.h>
+
+// ----------------------------------------------------------------------------
+namespace android {
+// ----------------------------------------------------------------------------
+
+Sensor::Sensor()
+ : mHandle(0), mType(0),
+ mMinValue(0), mMaxValue(0), mResolution(0),
+ mPower(0)
+{
+}
+
+Sensor::~Sensor()
+{
+}
+
+const String8& Sensor::getName() const {
+ return mName;
+}
+
+const String8& Sensor::getVendor() const {
+ return mVendor;
+}
+
+int32_t Sensor::getHandle() const {
+ return mHandle;
+}
+
+int32_t Sensor::getType() const {
+ return mType;
+}
+
+float Sensor::getMinValue() const {
+ return mMinValue;
+}
+
+float Sensor::getMaxValue() const {
+ return mMaxValue;
+}
+
+float Sensor::getResolution() const {
+ return mResolution;
+}
+
+float Sensor::getPowerUsage() const {
+ return mPower;
+}
+
+size_t Sensor::getFlattenedSize() const
+{
+ return sizeof(int32_t) + ((mName.length() + 3) & ~3) +
+ sizeof(int32_t) + ((mVendor.length() + 3) & ~3) +
+ sizeof(int32_t) * 2 +
+ sizeof(float) * 3;
+}
+
+size_t Sensor::getFdCount() const
+{
+ return 0;
+}
+
+static inline
+size_t write(void* buffer, size_t offset, const String8& value) {
+ memcpy(static_cast<char*>(buffer) + offset, value.string(), value.length());
+ return (value.length() + 3) & ~3;
+}
+
+static inline
+size_t write(void* buffer, size_t offset, float value) {
+ *reinterpret_cast<float*>(static_cast<char*>(buffer) + offset) = value;
+ return sizeof(float);
+}
+
+static inline
+size_t write(void* buffer, size_t offset, int32_t value) {
+ *reinterpret_cast<int32_t*>(static_cast<char*>(buffer) + offset) = value;
+ return sizeof(int32_t);
+}
+
+status_t Sensor::flatten(void* buffer, size_t size,
+ int fds[], size_t count) const
+{
+ if (size < Sensor::getFlattenedSize())
+ return -ENOMEM;
+
+ size_t offset = 0;
+ offset += write(buffer, offset, int32_t(mName.length()));
+ offset += write(buffer, offset, mName);
+ offset += write(buffer, offset, int32_t(mVendor.length()));
+ offset += write(buffer, offset, mVendor);
+ offset += write(buffer, offset, mHandle);
+ offset += write(buffer, offset, mType);
+ offset += write(buffer, offset, mMinValue);
+ offset += write(buffer, offset, mMaxValue);
+ offset += write(buffer, offset, mResolution);
+ offset += write(buffer, offset, mPower);
+
+ return NO_ERROR;
+}
+
+static inline
+size_t read(void const* buffer, size_t offset, String8* value, int32_t len) {
+ value->setTo(static_cast<char const*>(buffer) + offset, len);
+ return (len + 3) & ~3;
+}
+
+static inline
+size_t read(void const* buffer, size_t offset, float* value) {
+ *value = *reinterpret_cast<float const*>(static_cast<char const*>(buffer) + offset);
+ return sizeof(float);
+}
+
+static inline
+size_t read(void const* buffer, size_t offset, int32_t* value) {
+ *value = *reinterpret_cast<int32_t const*>(static_cast<char const*>(buffer) + offset);
+ return sizeof(int32_t);
+}
+
+status_t Sensor::unflatten(void const* buffer, size_t size,
+ int fds[], size_t count)
+{
+ int32_t len;
+ size_t offset = 0;
+ offset += read(buffer, offset, &len);
+ offset += read(buffer, offset, &mName, len);
+ offset += read(buffer, offset, &len);
+ offset += read(buffer, offset, &mVendor, len);
+ offset += read(buffer, offset, &mHandle);
+ offset += read(buffer, offset, &mType);
+ offset += read(buffer, offset, &mMinValue);
+ offset += read(buffer, offset, &mMaxValue);
+ offset += read(buffer, offset, &mResolution);
+ offset += read(buffer, offset, &mPower);
+
+ return NO_ERROR;
+}
+
+// ----------------------------------------------------------------------------
+}; // namespace android