/* returns a new global reference which needs to be released later */
static jobject CC_CALL cc_jni_GetSystemServiceObject(const char* name)
{
struct LocalReferenceHolder refs = LocalReferenceHolder_Setup(__FUNCTION__);
JNIEnv* env = cc_jni_get_env();
jobject retval = NULL;
if (!LocalReferenceHolder_Init(&refs, env)) {
LocalReferenceHolder_Cleanup(&refs);
return NULL;
}
jstring service = (*env)->NewStringUTF(env, name);
jmethodID mid;
mid = (*env)->GetStaticMethodID(env, _activity_class, "getContext", "()Landroid/content/Context;");
jobject context = (*env)->CallStaticObjectMethod(env, _activity_class, mid);
mid = (*env)->GetMethodID(env, _activity_class, "getSystemServiceFromUiThread", "(Ljava/lang/String;)Ljava/lang/Object;");
jobject manager = (*env)->CallObjectMethod(env, context, mid, service);
(*env)->DeleteLocalRef(env, service);
retval = manager ? (*env)->NewGlobalRef(env, manager) : NULL;
LocalReferenceHolder_Cleanup(&refs);
return retval;
}
/* returns 0 on success or -1 on error (others undefined then)
* returns truthy or falsy value in plugged, charged and battery
* returns the value in seconds and percent or -1 if not available
*/
int CC_CALL cc_jni_get_power_info(int* plugged, int* charged, int* battery, int* seconds, int* percent)
{
struct LocalReferenceHolder refs = LocalReferenceHolder_Setup(__FUNCTION__);
JNIEnv* env = cc_jni_get_env();
jmethodID mid;
if (!LocalReferenceHolder_Init(&refs, env)) {
LocalReferenceHolder_Cleanup(&refs);
return -1;
}
mid = (*env)->GetStaticMethodID(env, _activity_class, "getContext", "()Landroid/content/Context;");
jobject context = (*env)->CallStaticObjectMethod(env, _activity_class, mid);
jstring action = (*env)->NewStringUTF(env, "android.intent.action.BATTERY_CHANGED");
jclass cls = (*env)->FindClass(env, "android/content/IntentFilter");
mid = (*env)->GetMethodID(env, cls, "<init>", "(Ljava/lang/String;)V");
jobject filter = (*env)->NewObject(env, cls, mid, action);
(*env)->DeleteLocalRef(env, action);
mid = (*env)->GetMethodID(env, _activity_class, "registerReceiver", "(Landroid/content/BroadcastReceiver;Landroid/content/IntentFilter;)Landroid/content/Intent;");
jobject intent = (*env)->CallObjectMethod(env, context, mid, NULL, filter);
(*env)->DeleteLocalRef(env, filter);
cls = (*env)->GetObjectClass(env, intent);
jstring iname;
jmethodID imid = (*env)->GetMethodID(env, cls, "getIntExtra", "(Ljava/lang/String;I)I");
#define GET_INT_EXTRA(var, key) \
iname = (*env)->NewStringUTF(env, key); \
int var = (*env)->CallIntMethod(env, intent, imid, iname, -1); \
(*env)->DeleteLocalRef(env, iname);
jstring bname;
jmethodID bmid = (*env)->GetMethodID(env, cls, "getBooleanExtra", "(Ljava/lang/String;Z)Z");
#define GET_BOOL_EXTRA(var, key) \
bname = (*env)->NewStringUTF(env, key); \
int var = (*env)->CallBooleanMethod(env, intent, bmid, bname, JNI_FALSE); \
(*env)->DeleteLocalRef(env, bname);
if (plugged) {
GET_INT_EXTRA(plug, "plugged") /* == BatteryManager.EXTRA_PLUGGED (API 5) */
if (plug == -1) {
LocalReferenceHolder_Cleanup(&refs);
return -1;
}
/* 1 == BatteryManager.BATTERY_PLUGGED_AC */
/* 2 == BatteryManager.BATTERY_PLUGGED_USB */
*plugged = (0 < plug) ? 1 : 0;
}
if (charged) {
GET_INT_EXTRA(status, "status") /* == BatteryManager.EXTRA_STATUS (API 5) */
if (status == -1) {
LocalReferenceHolder_Cleanup(&refs);
return -1;
}
/* 5 == BatteryManager.BATTERY_STATUS_FULL */
*charged = (status == 5) ? 1 : 0;
}
if (battery) {
GET_BOOL_EXTRA(present, "present") /* == BatteryManager.EXTRA_PRESENT (API 5) */
*battery = present ? 1 : 0;
}
if (seconds) {
*seconds = -1; /* not possible */
}
if (percent) {
GET_INT_EXTRA(level, "level") /* == BatteryManager.EXTRA_LEVEL (API 5) */
GET_INT_EXTRA(scale, "scale") /* == BatteryManager.EXTRA_SCALE (API 5) */
if ((level == -1) || (scale == -1)) {
LocalReferenceHolder_Cleanup(&refs);
return -1;
}
*percent = level * 100 / scale;
}
(*env)->DeleteLocalRef(env, intent);
LocalReferenceHolder_Cleanup(&refs);
return 0;
}
/*
* CODE CHUNK IMPORTED FROM SDL 2.0
* returns 0 on success or -1 on error (others undefined then)
* returns truthy or falsy value in plugged, charged and battery
* returns the value in seconds and percent or -1 if not available
*/
int Android_JNI_GetPowerInfo(int *plugged, int *charged, int *battery, int *seconds, int *percent) {
env = Android_JNI_GetEnv();
refs = LocalReferenceHolder_Setup(__FUNCTION__);
if (!LocalReferenceHolder_Init(&refs, env)) {
LocalReferenceHolder_Cleanup(&refs);
return -1;
}
mid = (*env)->GetStaticMethodID(env, mActivityClass, "getContext", "()Landroid/content/Context;");
context = (*env)->CallStaticObjectMethod(env, mActivityClass, mid);
action = (*env)->NewStringUTF(env, "android.intent.action.BATTERY_CHANGED");
cls = (*env)->FindClass(env, "android/content/IntentFilter");
mid = (*env)->GetMethodID(env, cls, "<init>", "(Ljava/lang/String;)V");
filter = (*env)->NewObject(env, cls, mid, action);
(*env)->DeleteLocalRef(env, action);
mid = (*env)->GetMethodID(env, mActivityClass, "registerReceiver", "(Landroid/content/BroadcastReceiver;Landroid/content/IntentFilter;)Landroid/content/Intent;");
intent = (*env)->CallObjectMethod(env, context, mid, NULL, filter);
(*env)->DeleteLocalRef(env, filter);
cls = (*env)->GetObjectClass(env, intent);
imid = (*env)->GetMethodID(env, cls, "getIntExtra", "(Ljava/lang/String;I)I");
// Watch out for C89 scoping rules because of the macro
#define GET_INT_EXTRA(var, key) \
int var; \
iname = (*env)->NewStringUTF(env, key); \
var = (*env)->CallIntMethod(env, intent, imid, iname, -1); \
(*env)->DeleteLocalRef(env, iname);
bmid = (*env)->GetMethodID(env, cls, "getBooleanExtra", "(Ljava/lang/String;Z)Z");
// Watch out for C89 scoping rules because of the macro
#define GET_BOOL_EXTRA(var, key) \
int var; \
bname = (*env)->NewStringUTF(env, key); \
var = (*env)->CallBooleanMethod(env, intent, bmid, bname, JNI_FALSE); \
(*env)->DeleteLocalRef(env, bname);
if (plugged) {
// Watch out for C89 scoping rules because of the macro
GET_INT_EXTRA(plug, "plugged") // == BatteryManager.EXTRA_PLUGGED (API 5)
if (plug == -1) {
LocalReferenceHolder_Cleanup(&refs);
return -1;
}
// 1 == BatteryManager.BATTERY_PLUGGED_AC
// 2 == BatteryManager.BATTERY_PLUGGED_USB
*plugged = (0 < plug) ? 1 : 0;
}
if (charged) {
// Watch out for C89 scoping rules because of the macro
GET_INT_EXTRA(status, "status") // == BatteryManager.EXTRA_STATUS (API 5)
if (status == -1) {
LocalReferenceHolder_Cleanup(&refs);
return -1;
}
// 5 == BatteryManager.BATTERY_STATUS_FULL
*charged = (status == 5) ? 1 : 0;
}
if (battery) {
GET_BOOL_EXTRA(present, "present") // == BatteryManager.EXTRA_PRESENT (API 5)
*battery = present ? 1 : 0;
}
if (seconds) {
*seconds = -1; // not possible
}
if (percent) {
int level;
int scale;
// Watch out for C89 scoping rules because of the macro
{
GET_INT_EXTRA(level_temp, "level") // == BatteryManager.EXTRA_LEVEL (API 5)
level = level_temp;
}
// Watch out for C89 scoping rules because of the macro
{
GET_INT_EXTRA(scale_temp, "scale") // == BatteryManager.EXTRA_SCALE (API 5)
scale = scale_temp;
}
if ((level == -1) || (scale == -1)) {
LocalReferenceHolder_Cleanup(&refs);
return -1;
}
*percent = level * 100 / scale;
}
(*env)->DeleteLocalRef(env, intent);
LocalReferenceHolder_Cleanup(&refs);
return 0;
}