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 | |
Mike Lockwood | 270e87f | 2009-05-22 10:02:14 -0400 | [diff] [blame] | 17 | #define LOG_TAG "SensorManager" |
| 18 | |
| 19 | #define LOG_NDEBUG 0 |
| 20 | #include "utils/Log.h" |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 21 | |
| 22 | #include <hardware/sensors.h> |
Mike Lockwood | 270e87f | 2009-05-22 10:02:14 -0400 | [diff] [blame] | 23 | #include <cutils/native_handle.h> |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 24 | |
| 25 | #include "jni.h" |
| 26 | #include "JNIHelp.h" |
| 27 | |
| 28 | |
| 29 | namespace android { |
| 30 | |
| 31 | struct SensorOffsets |
| 32 | { |
| 33 | jfieldID name; |
| 34 | jfieldID vendor; |
| 35 | jfieldID version; |
| 36 | jfieldID handle; |
| 37 | jfieldID type; |
| 38 | jfieldID range; |
| 39 | jfieldID resolution; |
| 40 | jfieldID power; |
| 41 | } gSensorOffsets; |
| 42 | |
| 43 | /* |
| 44 | * The method below are not thread-safe and not intended to be |
| 45 | */ |
| 46 | |
| 47 | static sensors_module_t* sSensorModule = 0; |
| 48 | static sensors_data_device_t* sSensorDevice = 0; |
| 49 | |
| 50 | static jint |
| 51 | sensors_module_init(JNIEnv *env, jclass clazz) |
| 52 | { |
| 53 | int err = 0; |
| 54 | sensors_module_t const* module; |
| 55 | err = hw_get_module(SENSORS_HARDWARE_MODULE_ID, (const hw_module_t **)&module); |
| 56 | if (err == 0) |
| 57 | sSensorModule = (sensors_module_t*)module; |
| 58 | return err; |
| 59 | } |
| 60 | |
| 61 | static jint |
| 62 | sensors_module_get_next_sensor(JNIEnv *env, jobject clazz, jobject sensor, jint next) |
| 63 | { |
| 64 | if (sSensorModule == NULL) |
| 65 | return 0; |
| 66 | |
| 67 | SensorOffsets& sensorOffsets = gSensorOffsets; |
| 68 | const struct sensor_t* list; |
| 69 | int count = sSensorModule->get_sensors_list(sSensorModule, &list); |
| 70 | if (next >= count) |
| 71 | return -1; |
| 72 | |
| 73 | list += next; |
| 74 | |
| 75 | jstring name = env->NewStringUTF(list->name); |
| 76 | jstring vendor = env->NewStringUTF(list->vendor); |
| 77 | env->SetObjectField(sensor, sensorOffsets.name, name); |
| 78 | env->SetObjectField(sensor, sensorOffsets.vendor, vendor); |
| 79 | env->SetIntField(sensor, sensorOffsets.version, list->version); |
| 80 | env->SetIntField(sensor, sensorOffsets.handle, list->handle); |
| 81 | env->SetIntField(sensor, sensorOffsets.type, list->type); |
| 82 | env->SetFloatField(sensor, sensorOffsets.range, list->maxRange); |
| 83 | env->SetFloatField(sensor, sensorOffsets.resolution, list->resolution); |
| 84 | env->SetFloatField(sensor, sensorOffsets.power, list->power); |
| 85 | |
| 86 | next++; |
| 87 | return next<count ? next : 0; |
| 88 | } |
| 89 | |
| 90 | //---------------------------------------------------------------------------- |
| 91 | static jint |
| 92 | sensors_data_init(JNIEnv *env, jclass clazz) |
| 93 | { |
| 94 | if (sSensorModule == NULL) |
| 95 | return -1; |
| 96 | int err = sensors_data_open(&sSensorModule->common, &sSensorDevice); |
| 97 | return err; |
| 98 | } |
| 99 | |
| 100 | static jint |
| 101 | sensors_data_uninit(JNIEnv *env, jclass clazz) |
| 102 | { |
| 103 | int err = 0; |
| 104 | if (sSensorDevice) { |
| 105 | err = sensors_data_close(sSensorDevice); |
| 106 | if (err == 0) |
| 107 | sSensorDevice = 0; |
| 108 | } |
| 109 | return err; |
| 110 | } |
| 111 | |
| 112 | static jint |
Mike Lockwood | 270e87f | 2009-05-22 10:02:14 -0400 | [diff] [blame] | 113 | sensors_data_open(JNIEnv *env, jclass clazz, jobjectArray fdArray, jintArray intArray) |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 114 | { |
| 115 | jclass FileDescriptor = env->FindClass("java/io/FileDescriptor"); |
Mike Lockwood | 270e87f | 2009-05-22 10:02:14 -0400 | [diff] [blame] | 116 | jfieldID fieldOffset = env->GetFieldID(FileDescriptor, "descriptor", "I"); |
| 117 | int numFds = (fdArray ? env->GetArrayLength(fdArray) : 0); |
| 118 | int numInts = (intArray ? env->GetArrayLength(intArray) : 0); |
| 119 | native_handle_t* handle = native_handle_create(numFds, numInts); |
| 120 | int offset = 0; |
| 121 | |
| 122 | for (int i = 0; i < numFds; i++) { |
| 123 | jobject fdo = env->GetObjectArrayElement(fdArray, i); |
| 124 | if (fdo) { |
| 125 | handle->data[offset++] = env->GetIntField(fdo, fieldOffset); |
| 126 | } else { |
| 127 | handle->data[offset++] = -1; |
| 128 | } |
| 129 | } |
| 130 | if (numInts > 0) { |
| 131 | jint* ints = env->GetIntArrayElements(intArray, 0); |
| 132 | for (int i = 0; i < numInts; i++) { |
| 133 | handle->data[offset++] = ints[i]; |
| 134 | } |
| 135 | env->ReleaseIntArrayElements(intArray, ints, 0); |
| 136 | } |
| 137 | |
| 138 | // doesn't take ownership of the native handle |
| 139 | return sSensorDevice->data_open(sSensorDevice, handle); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 140 | } |
| 141 | |
| 142 | static jint |
| 143 | sensors_data_close(JNIEnv *env, jclass clazz) |
| 144 | { |
| 145 | return sSensorDevice->data_close(sSensorDevice); |
| 146 | } |
| 147 | |
| 148 | static jint |
| 149 | sensors_data_poll(JNIEnv *env, jclass clazz, |
| 150 | jfloatArray values, jintArray status, jlongArray timestamp) |
| 151 | { |
| 152 | sensors_data_t data; |
| 153 | int res = sSensorDevice->poll(sSensorDevice, &data); |
| 154 | if (res >= 0) { |
| 155 | jint accuracy = data.vector.status; |
| 156 | env->SetFloatArrayRegion(values, 0, 3, data.vector.v); |
| 157 | env->SetIntArrayRegion(status, 0, 1, &accuracy); |
| 158 | env->SetLongArrayRegion(timestamp, 0, 1, &data.time); |
| 159 | } |
| 160 | return res; |
| 161 | } |
| 162 | |
| 163 | static void |
| 164 | nativeClassInit (JNIEnv *_env, jclass _this) |
| 165 | { |
| 166 | jclass sensorClass = _env->FindClass("android/hardware/Sensor"); |
| 167 | SensorOffsets& sensorOffsets = gSensorOffsets; |
| 168 | sensorOffsets.name = _env->GetFieldID(sensorClass, "mName", "Ljava/lang/String;"); |
| 169 | sensorOffsets.vendor = _env->GetFieldID(sensorClass, "mVendor", "Ljava/lang/String;"); |
| 170 | sensorOffsets.version = _env->GetFieldID(sensorClass, "mVersion", "I"); |
| 171 | sensorOffsets.handle = _env->GetFieldID(sensorClass, "mHandle", "I"); |
| 172 | sensorOffsets.type = _env->GetFieldID(sensorClass, "mType", "I"); |
| 173 | sensorOffsets.range = _env->GetFieldID(sensorClass, "mMaxRange", "F"); |
| 174 | sensorOffsets.resolution = _env->GetFieldID(sensorClass, "mResolution","F"); |
| 175 | sensorOffsets.power = _env->GetFieldID(sensorClass, "mPower", "F"); |
| 176 | } |
| 177 | |
| 178 | static JNINativeMethod gMethods[] = { |
| 179 | {"nativeClassInit", "()V", (void*)nativeClassInit }, |
| 180 | {"sensors_module_init","()I", (void*)sensors_module_init }, |
| 181 | {"sensors_module_get_next_sensor","(Landroid/hardware/Sensor;I)I", |
| 182 | (void*)sensors_module_get_next_sensor }, |
| 183 | {"sensors_data_init", "()I", (void*)sensors_data_init }, |
| 184 | {"sensors_data_uninit", "()I", (void*)sensors_data_uninit }, |
Mike Lockwood | 270e87f | 2009-05-22 10:02:14 -0400 | [diff] [blame] | 185 | {"sensors_data_open", "([Ljava/io/FileDescriptor;[I)I", (void*)sensors_data_open }, |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 186 | {"sensors_data_close", "()I", (void*)sensors_data_close }, |
| 187 | {"sensors_data_poll", "([F[I[J)I", (void*)sensors_data_poll }, |
| 188 | }; |
| 189 | |
| 190 | }; // namespace android |
| 191 | |
| 192 | using namespace android; |
| 193 | |
| 194 | int register_android_hardware_SensorManager(JNIEnv *env) |
| 195 | { |
| 196 | return jniRegisterNativeMethods(env, "android/hardware/SensorManager", |
| 197 | gMethods, NELEM(gMethods)); |
| 198 | } |