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      1 /*
      2  * Copyright (C) 2009 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 "LightsService"
     18 
     19 #include "jni.h"
     20 #include "JNIHelp.h"
     21 #include "android_runtime/AndroidRuntime.h"
     22 
     23 #include <utils/misc.h>
     24 #include <utils/Log.h>
     25 #include <hardware/hardware.h>
     26 #include <hardware/lights.h>
     27 
     28 #include <stdio.h>
     29 
     30 namespace android
     31 {
     32 
     33 // These values must correspond with the LIGHT_ID constants in
     34 // LightsService.java
     35 enum {
     36     LIGHT_INDEX_BACKLIGHT = 0,
     37     LIGHT_INDEX_KEYBOARD = 1,
     38     LIGHT_INDEX_BUTTONS = 2,
     39     LIGHT_INDEX_BATTERY = 3,
     40     LIGHT_INDEX_NOTIFICATIONS = 4,
     41     LIGHT_INDEX_ATTENTION = 5,
     42     LIGHT_INDEX_BLUETOOTH = 6,
     43     LIGHT_INDEX_WIFI = 7,
     44     LIGHT_COUNT
     45 };
     46 
     47 struct Devices {
     48     light_device_t* lights[LIGHT_COUNT];
     49 };
     50 
     51 static light_device_t* get_device(hw_module_t* module, char const* name)
     52 {
     53     int err;
     54     hw_device_t* device;
     55     err = module->methods->open(module, name, &device);
     56     if (err == 0) {
     57         return (light_device_t*)device;
     58     } else {
     59         return NULL;
     60     }
     61 }
     62 
     63 static jint init_native(JNIEnv *env, jobject clazz)
     64 {
     65     int err;
     66     hw_module_t* module;
     67     Devices* devices;
     68 
     69     devices = (Devices*)malloc(sizeof(Devices));
     70 
     71     err = hw_get_module(LIGHTS_HARDWARE_MODULE_ID, (hw_module_t const**)&module);
     72     if (err == 0) {
     73         devices->lights[LIGHT_INDEX_BACKLIGHT]
     74                 = get_device(module, LIGHT_ID_BACKLIGHT);
     75         devices->lights[LIGHT_INDEX_KEYBOARD]
     76                 = get_device(module, LIGHT_ID_KEYBOARD);
     77         devices->lights[LIGHT_INDEX_BUTTONS]
     78                 = get_device(module, LIGHT_ID_BUTTONS);
     79         devices->lights[LIGHT_INDEX_BATTERY]
     80                 = get_device(module, LIGHT_ID_BATTERY);
     81         devices->lights[LIGHT_INDEX_NOTIFICATIONS]
     82                 = get_device(module, LIGHT_ID_NOTIFICATIONS);
     83         devices->lights[LIGHT_INDEX_ATTENTION]
     84                 = get_device(module, LIGHT_ID_ATTENTION);
     85         devices->lights[LIGHT_INDEX_BLUETOOTH]
     86                 = get_device(module, LIGHT_ID_BLUETOOTH);
     87         devices->lights[LIGHT_INDEX_WIFI]
     88                 = get_device(module, LIGHT_ID_WIFI);
     89     } else {
     90         memset(devices, 0, sizeof(Devices));
     91     }
     92 
     93     return (jint)devices;
     94 }
     95 
     96 static void finalize_native(JNIEnv *env, jobject clazz, int ptr)
     97 {
     98     Devices* devices = (Devices*)ptr;
     99     if (devices == NULL) {
    100         return;
    101     }
    102 
    103     free(devices);
    104 }
    105 
    106 static void setLight_native(JNIEnv *env, jobject clazz, int ptr,
    107         int light, int colorARGB, int flashMode, int onMS, int offMS, int brightnessMode)
    108 {
    109     Devices* devices = (Devices*)ptr;
    110     light_state_t state;
    111 
    112     if (light < 0 || light >= LIGHT_COUNT || devices->lights[light] == NULL) {
    113         return ;
    114     }
    115 
    116     memset(&state, 0, sizeof(light_state_t));
    117     state.color = colorARGB;
    118     state.flashMode = flashMode;
    119     state.flashOnMS = onMS;
    120     state.flashOffMS = offMS;
    121     state.brightnessMode = brightnessMode;
    122 
    123     {
    124         ALOGD_IF_SLOW(50, "Excessive delay setting light");
    125         devices->lights[light]->set_light(devices->lights[light], &state);
    126     }
    127 }
    128 
    129 static JNINativeMethod method_table[] = {
    130     { "init_native", "()I", (void*)init_native },
    131     { "finalize_native", "(I)V", (void*)finalize_native },
    132     { "setLight_native", "(IIIIIII)V", (void*)setLight_native },
    133 };
    134 
    135 int register_android_server_LightsService(JNIEnv *env)
    136 {
    137     return jniRegisterNativeMethods(env, "com/android/server/LightsService",
    138             method_table, NELEM(method_table));
    139 }
    140 
    141 };
    142