The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2008, The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | #define LOG_TAG "Sensors" |
| 18 | |
| 19 | #include <hardware/sensors.h> |
| 20 | |
| 21 | #include "jni.h" |
| 22 | #include "JNIHelp.h" |
| 23 | |
| 24 | namespace android { |
| 25 | |
| 26 | static struct file_descriptor_offsets_t |
| 27 | { |
| 28 | jclass mClass; |
| 29 | jmethodID mConstructor; |
| 30 | jfieldID mDescriptor; |
| 31 | } gFileDescriptorOffsets; |
| 32 | |
| 33 | static struct parcel_file_descriptor_offsets_t |
| 34 | { |
| 35 | jclass mClass; |
| 36 | jmethodID mConstructor; |
| 37 | } gParcelFileDescriptorOffsets; |
| 38 | |
| 39 | /* |
| 40 | * The method below are not thread-safe and not intended to be |
| 41 | */ |
| 42 | |
| 43 | static sensors_control_device_t* sSensorDevice = 0; |
| 44 | |
| 45 | static jint |
| 46 | android_init(JNIEnv *env, jclass clazz) |
| 47 | { |
| 48 | sensors_module_t* module; |
| 49 | if (hw_get_module(SENSORS_HARDWARE_MODULE_ID, (const hw_module_t**)&module) == 0) { |
| 50 | if (sensors_control_open(&module->common, &sSensorDevice) == 0) { |
| 51 | const struct sensor_t* list; |
| 52 | int count = module->get_sensors_list(module, &list); |
| 53 | return count; |
| 54 | } |
| 55 | } |
| 56 | return 0; |
| 57 | } |
| 58 | |
| 59 | static jobject |
| 60 | android_open(JNIEnv *env, jclass clazz) |
| 61 | { |
| 62 | int fd = sSensorDevice->open_data_source(sSensorDevice); |
| 63 | // new FileDescriptor() |
| 64 | jobject filedescriptor = env->NewObject( |
| 65 | gFileDescriptorOffsets.mClass, |
| 66 | gFileDescriptorOffsets.mConstructor); |
| 67 | |
| 68 | if (filedescriptor != NULL) { |
| 69 | env->SetIntField(filedescriptor, gFileDescriptorOffsets.mDescriptor, fd); |
| 70 | // new ParcelFileDescriptor() |
| 71 | return env->NewObject(gParcelFileDescriptorOffsets.mClass, |
| 72 | gParcelFileDescriptorOffsets.mConstructor, |
| 73 | filedescriptor); |
| 74 | } |
| 75 | close(fd); |
| 76 | return NULL; |
| 77 | } |
| 78 | |
| 79 | static jboolean |
| 80 | android_activate(JNIEnv *env, jclass clazz, jint sensor, jboolean activate) |
| 81 | { |
| 82 | int active = sSensorDevice->activate(sSensorDevice, sensor, activate); |
| 83 | return (active<0) ? false : true; |
| 84 | } |
| 85 | |
| 86 | static jint |
| 87 | android_set_delay(JNIEnv *env, jclass clazz, jint ms) |
| 88 | { |
| 89 | return sSensorDevice->set_delay(sSensorDevice, ms); |
| 90 | } |
| 91 | |
| 92 | static jint |
| 93 | android_data_wake(JNIEnv *env, jclass clazz) |
| 94 | { |
| 95 | int res = sSensorDevice->wake(sSensorDevice); |
| 96 | return res; |
| 97 | } |
| 98 | |
| 99 | |
| 100 | static JNINativeMethod gMethods[] = { |
| 101 | {"_sensors_control_init", "()I", (void*) android_init }, |
| 102 | {"_sensors_control_open", "()Landroid/os/ParcelFileDescriptor;", (void*) android_open }, |
| 103 | {"_sensors_control_activate", "(IZ)Z", (void*) android_activate }, |
| 104 | {"_sensors_control_wake", "()I", (void*) android_data_wake }, |
| 105 | {"_sensors_control_set_delay","(I)I", (void*) android_set_delay }, |
| 106 | }; |
| 107 | |
| 108 | int register_android_server_SensorService(JNIEnv *env) |
| 109 | { |
| 110 | jclass clazz; |
| 111 | |
| 112 | clazz = env->FindClass("java/io/FileDescriptor"); |
| 113 | gFileDescriptorOffsets.mClass = (jclass)env->NewGlobalRef(clazz); |
| 114 | gFileDescriptorOffsets.mConstructor = env->GetMethodID(clazz, "<init>", "()V"); |
| 115 | gFileDescriptorOffsets.mDescriptor = env->GetFieldID(clazz, "descriptor", "I"); |
| 116 | |
| 117 | clazz = env->FindClass("android/os/ParcelFileDescriptor"); |
| 118 | gParcelFileDescriptorOffsets.mClass = (jclass) env->NewGlobalRef(clazz); |
| 119 | gParcelFileDescriptorOffsets.mConstructor = env->GetMethodID(clazz, "<init>", "(Ljava/io/FileDescriptor;)V"); |
| 120 | |
| 121 | return jniRegisterNativeMethods(env, "com/android/server/SensorService", |
| 122 | gMethods, NELEM(gMethods)); |
| 123 | } |
| 124 | |
| 125 | }; // namespace android |