android_frameworks_base/services/jni/com_android_server_HardwareService.cpp

/* //device/libs/android_runtime/android_os_Vibrator.cpp
**
** Copyright 2006, 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 "HardwareService"

#include "jni.h"
#include "JNIHelp.h"
#include "android_runtime/AndroidRuntime.h"

#include <utils/misc.h>
#include <utils/Log.h>
#include <hardware_legacy/vibrator.h>
#include <hardware/hardware.h>
#include <hardware/lights.h>

#include <stdio.h>
//#include <string.h>

namespace android
{

// These values must correspond with the LIGHT_ID constants in
// HardwareService.java
enum {
    LIGHT_INDEX_BACKLIGHT = 0,
    LIGHT_INDEX_KEYBOARD = 1,
    LIGHT_INDEX_BUTTONS = 2,
    LIGHT_INDEX_BATTERY = 3,
    LIGHT_INDEX_NOTIFICATIONS = 4,
    LIGHT_INDEX_ATTENTION = 5,
    LIGHT_COUNT
};

struct Devices {
    light_device_t* lights[LIGHT_COUNT];
};

static light_device_t* get_device(hw_module_t* module, char const* name)
{
    int err;
    hw_device_t* device;
    err = module->methods->open(module, name, &device);
    if (err == 0) {
        return (light_device_t*)device;
    } else {
        return NULL;
    }
}

static jint init_native(JNIEnv *env, jobject clazz)
{
    int err;
    hw_module_t* module;
    Devices* devices;
    
    devices = (Devices*)malloc(sizeof(Devices));

    err = hw_get_module(LIGHTS_HARDWARE_MODULE_ID, (hw_module_t const**)&module);
    if (err == 0) {
        devices->lights[LIGHT_INDEX_BACKLIGHT]
                = get_device(module, LIGHT_ID_BACKLIGHT);
        devices->lights[LIGHT_INDEX_KEYBOARD]
                = get_device(module, LIGHT_ID_KEYBOARD);
        devices->lights[LIGHT_INDEX_BUTTONS]
                = get_device(module, LIGHT_ID_BUTTONS);
        devices->lights[LIGHT_INDEX_BATTERY]
                = get_device(module, LIGHT_ID_BATTERY);
        devices->lights[LIGHT_INDEX_NOTIFICATIONS]
                = get_device(module, LIGHT_ID_NOTIFICATIONS);
        devices->lights[LIGHT_INDEX_ATTENTION]
                = get_device(module, LIGHT_ID_ATTENTION);
    } else {
        memset(devices, 0, sizeof(Devices));
    }

    return (jint)devices;
}

static void finalize_native(JNIEnv *env, jobject clazz, int ptr)
{
    Devices* devices = (Devices*)ptr;
    if (devices == NULL) {
        return;
    }

    free(devices);
}

static void setLight_native(JNIEnv *env, jobject clazz, int ptr,
        int light, int colorARGB, int flashMode, int onMS, int offMS)
{
    Devices* devices = (Devices*)ptr;
    light_state_t state;

    if (light < 0 || light >= LIGHT_COUNT || devices->lights[light] == NULL) {
        return ;
    }

    memset(&state, 0, sizeof(light_state_t));
    state.color = colorARGB;
    state.flashMode = flashMode;
    state.flashOnMS = onMS;
    state.flashOffMS = offMS;

    devices->lights[light]->set_light(devices->lights[light], &state);
}

static void vibratorOn(JNIEnv *env, jobject clazz, jlong timeout_ms)
{
    // LOGI("vibratorOn\n");
    vibrator_on(timeout_ms);
}

static void vibratorOff(JNIEnv *env, jobject clazz)
{
    // LOGI("vibratorOff\n");
    vibrator_off();
}

static JNINativeMethod method_table[] = {
    { "init_native", "()I", (void*)init_native },
    { "finalize_native", "(I)V", (void*)init_native },
    { "setLight_native", "(IIIIII)V", (void*)setLight_native },
    { "vibratorOn", "(J)V", (void*)vibratorOn },
    { "vibratorOff", "()V", (void*)vibratorOff }
};

int register_android_server_HardwareService(JNIEnv *env)
{
    return jniRegisterNativeMethods(env, "com/android/server/HardwareService",
            method_table, NELEM(method_table));
}

};