Encapsulating Functions into the JNI

Application Scenario

Encapsulate the six C++ APIs of the instruction stream engine client into the JNI.

Encapsulate the function of the communication module for setting the IP address and port number into the JNI.

Development Process

1. Encapsulate the six C++ APIs of the instruction stream engine client.
2. Encapsulate the function of the communication module for setting the IP address and port number into the JNI.
3. Create a JNI callback object for the instruction stream engine.

Encoding Instance

// Encapsulate the six APIs of the instruction stream engine.
#define INSTUCTION_JNI(func) Java_com_huawei_instructionstream_appui_engine_InstructionWrapper_##func
// Instruction stream engine APIs corresponding to the function names.
JNIEXPORT jint JNICALL INSTUCTION_JNI(initialize)(JNIEnv* env, jclass cls);
JNIEXPORT jint JNICALL INSTUCTION_JNI(start)(JNIEnv* env, jclass cls, jobject surface, jint width, jint height, jfloat densityDpi);
JNIEXPORT void JNICALL INSTUCTION_JNI(stop)(JNIEnv* env, jclass cls);
JNIEXPORT jstring JNICALL INSTUCTION_JNI(getStat)(JNIEnv* env, jclass cls);
JNIEXPORT jint JNICALL INSTUCTION_JNI(recvData)(JNIEnv* env, jclass cls, jbyte type, jbyteArray jData, jint length);

// The following is the encapsulation API of the send functions. You can encapsulate APIs as required.
JNIEXPORT jboolean JNICALL INSTUCTION_JNI(sendAudioDataArray)(JNIEnv* env, jclass cls, jbyteArray jData, jint length);
JNIEXPORT jboolean JNICALL INSTUCTION_JNI(sendTouchEventArray)(JNIEnv* env, jclass cls, jbyteArray jData, jint length);
JNIEXPORT jboolean JNICALL INSTUCTION_JNI(sendKeyEvent)(JNIEnv* env, jclass cls,jbyteArray jData, jint length);

// Encapsulate the callback event of the instruction stream engine.
#define CB_JNI(func) Java_com_huawei_instructionstream_appui_engine_JniCallBack_##func
JNIEXPORT void JNICALL CB_JNI(setNativeCallback)(JNIEnv* env, jobject obj);

// Encapsulate the communication module APIs.
#define NET_CONFIG_JNI(func) Java_com_huawei_instructionstream_appui_maincontrol_NetConfig_##func
JNIEXPORT jboolean JNICALL NET_CONFIG_JNI(initialize)(JNIEnv* env, jclass cls);
// Set the IP address and port number of the communication module.
JNIEXPORT jboolean JNICALL NET_CONFIG_JNI(setNetConfig)(JNIEnv* env, jclass cls, jstring ip, jint port, jint type);