xxxx_jni.cpp

#include <string.h>
#include <jni.h>
#include <boost/thread.hpp>
#include "XXXProtocol.h"

#include <metaioSDK/IMetaioSDK.h>
#include <metaioSDK/IGeometry.h>

#include <XXXXLib/MetaioSDK-Extensions/JavaMethodLib.h>

#include <XXXXLib/MetaioSDK-Extensions/MetaioSDKExtensions.h>

JNIEnv* javaEnv = 0;
jobject javaThiz = 0;

JavaVM* jvm;
jint jVersion;
JNIEnv* jEnv;
jobject jObj;

jobject globalObj;

// Convert a std string to a jstring
void GetJStringContent(JNIEnv *AEnv, jstring AStr, std::string &ARes) {
  if (!AStr) {
    ARes.clear();
    return;
  }

  const char *s = AEnv->GetStringUTFChars(AStr,NULL);
  ARes=s;
  AEnv->ReleaseStringUTFChars(AStr,s);
}

extern "C" {
JNIEXPORT void JNICALL Java_yy_zzz_XXXX_ndkcode_XXXProtocol_startXXXX(
    JNIEnv* env, jobject thiz , jstring ip, jint port, jstring assetPath);

JNIEXPORT void JNICALL Java_yy_zzz_XXXX_ndkcode_XXXProtocol_stopXXXX(
    JNIEnv* env, jobject thiz);

JNIEXPORT void JNICALL Java_yy_zzz_XXXX_ndkcode_XXXProtocol_sendJsonViaXXXX(
    JNIEnv* env, jobject thiz, jstring jsonString);
}



JNIEXPORT void JNICALL Java_yy_zzz_XXXX_ndkcode_XXXProtocol_startXXXX(
    JNIEnv* env, jobject thiz, jstring ip, jint port, jstring assetPath)
{
    std::string ipStr;
    GetJStringContent(env, ip, ipStr);

    std::string pathStr;
    GetJStringContent(env, assetPath, pathStr);

    // thread preparation
    JavaVM* javaVM;
    env->GetJavaVM(&javaVM);

    jvm = javaVM;

    jVersion = env->GetVersion();

    toaster(env, thiz, "XXXX started!");

    // make it global, so the garbage collector does not mess it up
    globalObj = env->NewGlobalRef(thiz);

    XXXX_init(ipStr, (uint16_t)port, pathStr, env, globalObj);
}

JNIEXPORT void JNICALL Java_yy_zzz_XXXX_ndkcode_XXXProtocol_stopXXXX(
    JNIEnv* env, jobject thiz){

    stopUpdateThread();

}

JNIEXPORT void JNICALL Java_yy_zzz_XXXX_ndkcode_XXXProtocol_sendJsonViaXXXX(
    JNIEnv* env, jobject thiz, jstring jsonString) {
    std::string nativeJsonString;
    GetJStringContent(env, jsonString, nativeJsonString);

    sendJson(nativeJsonString);
}