initial version

sensors/android/WiFiSensorAndroid.h

@@ -0,0 +1,76 @@
+#ifndef WIFISENSORANDROID_H
+#define WIFISENSORANDROID_H
+
+
+#ifdef ANDROID
+
+#include <QAndroidJniObject>
+
+#include "Debug.h"
+#include "WiFiSensor.h"
+
+class WiFiSensorAndroid : public WiFiSensor {
+
+private:
+
+	/** hidden ctor. use singleton! */
+	WiFiSensorAndroid() {;}
+
+public:
+
+	/** singleton access */
+	static WiFiSensorAndroid& get() {
+		static WiFiSensorAndroid wifi;
+		return wifi;
+	}
+
+	void start() override {
+
+		// start scanning
+		int res = QAndroidJniObject::callStaticMethod<int>("java/indoor/WiFi", "start", "()I");
+		(void) res;
+
+	}
+
+	/** called from java. handle the given incoming scan result */
+	void handle(const std::string& data) {
+
+		// to-be-constructed sensor data
+		WiFiSensorData sensorData;
+
+		// parse each mac->rssi entry
+		for (int i = 0; i < (int)data.length(); i += 17+1+2) {
+			const std::string bssid = data.substr(i, 17);
+			const int8_t rssi = data[i+17];
+			const int8_t pad1 = data[i+18];
+			const int8_t pad2 = data[i+19];
+			if (pad1 != 0 || pad2 != 0) {Debug::error("padding error within WiFi scan result");}
+			sensorData.entries.push_back(WiFiSensorDataEntry(bssid, rssi));
+		}
+
+		// call listeners
+		informListeners(sensorData);
+
+	}
+
+};
+
+
+extern "C" {
+
+	/** called after each successful WiFi scan */
+	JNIEXPORT void JNICALL Java_java_indoor_WiFi_onScanComplete(JNIEnv* env, jobject jobj, jbyteArray arrayID) {
+		(void) env; (void) jobj;
+		jsize length = env->GetArrayLength(arrayID);
+		jboolean isCopy;
+		jbyte* data = env->GetByteArrayElements(arrayID, &isCopy);
+		std::string str((char*)data, length);
+		env->ReleaseByteArrayElements(arrayID, data, JNI_ABORT);
+		WiFiSensorAndroid::get().handle(str);
+	}
+
+}
+
+#endif
+
+#endif // WIFISENSORANDROID_H