| /* |
| * 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 "SensorService" |
| |
| #include "utils/Log.h" |
| |
| #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; |
| |
| static struct bundle_descriptor_offsets_t |
| { |
| jclass mClass; |
| jmethodID mConstructor; |
| jmethodID mPutIntArray; |
| jmethodID mPutParcelableArray; |
| } gBundleOffsets; |
| |
| /* |
| * 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) |
| { |
| native_handle_t* handle = sSensorDevice->open_data_source(sSensorDevice); |
| if (!handle) { |
| return NULL; |
| } |
| |
| // new Bundle() |
| jobject bundle = env->NewObject( |
| gBundleOffsets.mClass, |
| gBundleOffsets.mConstructor); |
| |
| if (handle->numFds > 0) { |
| jobjectArray fdArray = env->NewObjectArray(handle->numFds, |
| gParcelFileDescriptorOffsets.mClass, NULL); |
| for (int i = 0; i < handle->numFds; i++) { |
| // new FileDescriptor() |
| jobject fd = env->NewObject(gFileDescriptorOffsets.mClass, |
| gFileDescriptorOffsets.mConstructor); |
| env->SetIntField(fd, gFileDescriptorOffsets.mDescriptor, handle->data[i]); |
| // new ParcelFileDescriptor() |
| jobject pfd = env->NewObject(gParcelFileDescriptorOffsets.mClass, |
| gParcelFileDescriptorOffsets.mConstructor, fd); |
| env->SetObjectArrayElement(fdArray, i, pfd); |
| } |
| // bundle.putParcelableArray("fds", fdArray); |
| env->CallVoidMethod(bundle, gBundleOffsets.mPutParcelableArray, |
| env->NewStringUTF("fds"), fdArray); |
| } |
| |
| if (handle->numInts > 0) { |
| jintArray intArray = env->NewIntArray(handle->numInts); |
| env->SetIntArrayRegion(intArray, 0, handle->numInts, &handle->data[handle->numInts]); |
| // bundle.putIntArray("ints", intArray); |
| env->CallVoidMethod(bundle, gBundleOffsets.mPutIntArray, |
| env->NewStringUTF("ints"), intArray); |
| } |
| |
| // delete the file handle, but don't close any file descriptors |
| native_handle_delete(handle); |
| return bundle; |
| } |
| |
| static jint |
| android_close(JNIEnv *env, jclass clazz) |
| { |
| if (sSensorDevice->close_data_source) |
| return sSensorDevice->close_data_source(sSensorDevice); |
| else |
| return 0; |
| } |
| |
| 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/Bundle;", (void*) android_open }, |
| {"_sensors_control_close", "()I", (void*) android_close }, |
| {"_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"); |
| |
| clazz = env->FindClass("android/os/Bundle"); |
| gBundleOffsets.mClass = (jclass) env->NewGlobalRef(clazz); |
| gBundleOffsets.mConstructor = env->GetMethodID(clazz, "<init>", "()V"); |
| gBundleOffsets.mPutIntArray = env->GetMethodID(clazz, "putIntArray", "(Ljava/lang/String;[I)V"); |
| gBundleOffsets.mPutParcelableArray = env->GetMethodID(clazz, "putParcelableArray", |
| "(Ljava/lang/String;[Landroid/os/Parcelable;)V"); |
| |
| return jniRegisterNativeMethods(env, "com/android/server/SensorService", |
| gMethods, NELEM(gMethods)); |
| } |
| |
| }; // namespace android |