Android HAL

核心提示：LOGI("led_init");if (hw_get_module(LED_HARDWARE_MODULE_ID, (const hw_module_t**)&module) == 0) {LOGI("get Module OK");sLedModule = (led_modu

LOGI("led_init");

if (hw_get_module(LED_HARDWARE_MODULE_ID, (const hw_module_t**)&module) == 0) {

LOGI("get Module OK");

sLedModule = (led_module_t *) module;

if (led_control_open(&module->common, &sLedDevice) != 0) {

LOGI("led_init error");

return -1;

}

}

LOGI("led_init success");

return 0;

}

/*

* Array of methods.

*

* Each entry has three fields: the name of the method, the method

* signature, and a pointer to the native implementation.

*/

static const JNINativeMethod gMethods[] = {

{"_init", "()Z",

(void*)led_init},

{ "_set_on", "()I",

(void*)led_setOn },

{ "_set_off", "()I",

(void*)led_setOff },

{ "_get_count", "()I",

(void*)get_count },

};

static int registerMethods(JNIEnv* env) {

static const char* const kClassName =

"com/hello/LedService/LedService";

jclass clazz;

/* look up the class */

clazz = env->FindClass(kClassName);

if (clazz == NULL) {

LOGE("Can't find class %s ", kClassName);

return -1;

}

/* register all the methods */

if (env->RegisterNatives(clazz, gMethods,

sizeof(gMethods) / sizeof(gMethods[0])) != JNI_OK)

{

LOGE("Failed registering methods for %s ", kClassName);

return -1;

}

/* fill out the rest of the ID cache */

return 0;

}

/*

* This is called by the VM when the shared library is first loaded.

*/

jint JNI_OnLoad(JavaVM* vm, void* reserved) {

JNIEnv* env = NULL;

jint result = -1;

LOGI("JNI_OnLoad");