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/*
* Copyright 2008, 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 "Sensors"
#include <hardware/sensors.h>
#include "jni.h"
#include "JNIHelp.h"
namespace android {
static struct file_descriptor_offsets_t
{
jclass mClass;
jmethodID mConstructor;
jfieldID mDescriptor;
} gFileDescriptorOffsets;
static struct parcel_file_descriptor_offsets_t
{
jclass mClass;
jmethodID mConstructor;
} gParcelFileDescriptorOffsets;
/*
* The method below are not thread-safe and not intended to be
*/
static sensors_control_device_t* sSensorDevice = 0;
static jint
android_init(JNIEnv *env, jclass clazz)
{
sensors_module_t* module;
if (hw_get_module(SENSORS_HARDWARE_MODULE_ID, (const hw_module_t**)&module) == 0) {
if (sensors_control_open(&module->common, &sSensorDevice) == 0) {
const struct sensor_t* list;
int count = module->get_sensors_list(module, &list);
return count;
}
}
return 0;
}
static jobject
android_open(JNIEnv *env, jclass clazz)
{
int fd = sSensorDevice->open_data_source(sSensorDevice);
// new FileDescriptor()
jobject filedescriptor = env->NewObject(
gFileDescriptorOffsets.mClass,
gFileDescriptorOffsets.mConstructor);
if (filedescriptor != NULL) {
env->SetIntField(filedescriptor, gFileDescriptorOffsets.mDescriptor, fd);
// new ParcelFileDescriptor()
return env->NewObject(gParcelFileDescriptorOffsets.mClass,
gParcelFileDescriptorOffsets.mConstructor,
filedescriptor);
}
close(fd);
return NULL;
}
static jboolean
android_activate(JNIEnv *env, jclass clazz, jint sensor, jboolean activate)
{
int active = sSensorDevice->activate(sSensorDevice, sensor, activate);
return (active<0) ? false : true;
}
static jint
android_set_delay(JNIEnv *env, jclass clazz, jint ms)
{
return sSensorDevice->set_delay(sSensorDevice, ms);
}
static jint
android_data_wake(JNIEnv *env, jclass clazz)
{
int res = sSensorDevice->wake(sSensorDevice);
return res;
}
static JNINativeMethod gMethods[] = {
{"_sensors_control_init", "()I", (void*) android_init },
{"_sensors_control_open", "()Landroid/os/ParcelFileDescriptor;", (void*) android_open },
{"_sensors_control_activate", "(IZ)Z", (void*) android_activate },
{"_sensors_control_wake", "()I", (void*) android_data_wake },
{"_sensors_control_set_delay","(I)I", (void*) android_set_delay },
};
int register_android_server_SensorService(JNIEnv *env)
{
jclass clazz;
clazz = env->FindClass("java/io/FileDescriptor");
gFileDescriptorOffsets.mClass = (jclass)env->NewGlobalRef(clazz);
gFileDescriptorOffsets.mConstructor = env->GetMethodID(clazz, "<init>", "()V");
gFileDescriptorOffsets.mDescriptor = env->GetFieldID(clazz, "descriptor", "I");
clazz = env->FindClass("android/os/ParcelFileDescriptor");
gParcelFileDescriptorOffsets.mClass = (jclass) env->NewGlobalRef(clazz);
gParcelFileDescriptorOffsets.mConstructor = env->GetMethodID(clazz, "<init>", "(Ljava/io/FileDescriptor;)V");
return jniRegisterNativeMethods(env, "com/android/server/SensorService",
gMethods, NELEM(gMethods));
}
}; // namespace android
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