JNI 中对应的方法 : JNI 中接收的方法是 jbyteArray data 类型的 ; extern "C" JNIEXPORT void JNICALL Java_kim_hsl_rtmp_LivePusher_native..._1encodeCameraData(JNIEnv *env, jobject thiz, jbyteArray data) { } 二、 jbyte * 数据类型 ( Java 中的 byte[] 数组传入...类型转换 : ① jbyteArray 类型说明 : jbyteArray 类型在 C++ 中是无法使用的 , 必须转成可以使用的数据类型, jbyteArray 就是 Java 类型的字节数组 , 可以转为...jbyte 数组 ; ② jbyteArray 转为 jbyte * : 调用 JNIEnv 结构体的 GetByteArrayElements 方法 , 可以将 jbyteArray 类型数据转为...jbyte * 类型 ; // 将 Java 层的 byte 数组类型 jbyteArray 转为 jbyte* 指针类型 // 注意这是局部引用变量, 不能跨线程, 跨方法调用, 需要将其存放在堆内存中
jbyteArray1) { //加密算法各有不同,这里我就用md5做个示范 return toMd5(env, jbyteArray1); } //md5 jstring...objArraySign = (jbyteArray) env->CallObjectMethod(objMessageDigest, midDigest); jsize intArrayLength...signatureByteArray = (jbyteArray) env->CallObjectMethod(signature, mid); //转成jstring...jbyteArray1) { //加密算法各有不同,这里我就用md5做个示范 if (getSignature(env)){//校验通过 return toMd5...(env, jbyteArray1); }else { return env->NewStringUTF(UNKNOWN); } } 5.总结 以上就是此次事件native
* use this appoach to decrease the jni call number */ int strLen = strlen(text); jbyteArray...符一个字符串与jbyteArray的互转函数 jbyteArray as_byte_array(unsigned char* buf, int len) { jbyteArray array =...0, len, reinterpret_cast(buf)); return array; } unsigned char* as_unsigned_char_array(jbyteArray
java传入数组,jni提供了一系列函数GetXXArrayElements来获得 下面举一个例子 一个jByteArray数组,如何在java和c/c++之间传递, 从java层传递一个byte[]到...JNICALL Java_com_frank_smart_smarthome_JniSocket_changeAccountPasswd (JNIEnv *env, jobject object,jbyteArray...passwd,jint len) { jbyte *bytes; unsigned char *buf; int i; //从jbytearray获取数据到jbyte*
, 0, uc_arr_len, byte_array); return jbyte_arr; } // jbyte -> unsigned char -> jbyte JNIEXPORT jbyteArray...JNICALL Java_com_rustfisher_ndkalgo_NDKUtils_nativeSendByteArray (JNIEnv *env, jobject jObj, jbyteArray...input_arr,jint in_arr_len, jbyteArray target_arr, jint nv21_size, jint y_size, jint yuv_gap) {...GB2312"); jmethodID mid = env->GetMethodID(clsstring, "getBytes", "(Ljava/lang/String;)[B"); jbyteArray...barr = (jbyteArray) env->CallObjectMethod(jstr, mid, strencode); jsize alen = env->GetArrayLength
LOGE("call onCallComplete worng"); } } jstring type = jniEnv->NewStringUTF(mime); jbyteArray...size); jniEnv->SetByteArrayRegion(csd0, 0, csd0_size, reinterpret_cast(csd_0)); jbyteArray...} } } c++层回调decodeAVPacket datasize = avPacket->size; data = avPacket->data;//jni这里需要把uint8_t转为jbyteArray
Native层的c代码如下: // Native层接口封装 static jbyteArray Jni_CalcDesMac64(JNIEnv *env, jobject obj, jbyteArray...key,jbyteArray data,jint len){ U08 mac[8]; jbyte * pkey = NULL; jbyte * pbuf = NULL; pkey...CurCalc_DES_MAC64( (SINGLE_DES_ENCRYPTION|ZERO_CBC_IV), (U08*)pkey, 0, (U08*)pbuf, len , mac ); jbyteArray...Jni_CalcDesMac64(JNIEnv *env, jobject obj, jbyteArray key,jbyteArray data,jint len){ U08 mac[8];...CurCalc_DES_MAC64( (SINGLE_DES_ENCRYPTION|ZERO_CBC_IV), (U08*)pkey, 0, (U08*)pbuf, len , mac ); jbyteArray
; } raii_NewByteArray raii_NewByteArray封装JNIEnv::NewByteArray,创建指定长度的byte数组 static raii_var<jbyteArray...raii_jobject_env(&JNIEnv::NewByteArray, len); } tojbytearray 调用raii_NewByteArray将一个C++的字节数组转为java字节数组(jbyteArray...) /* 将bytes转成raii_var对象 */ static raii_var tojbytearray(jbyte* bytes,...raii_GetByteArrayElements封装JNIEnv::GetByteArrayElements,返回java字节数组byte[]的C++字节数组 static auto raii_GetByteArrayElements(jbyteArray
因为byte[]数组在NDK中为jbyteArray,在nn_send和nn_recv中通讯我们要传入char*指针,所以在NDK中还要加呚两个函数是jbytearr和pchar的相互转换。...//JByteArray转为PChar char *jbyteArrTopChar(JNIEnv *env, jbyteArray array, int len) { char *buf = new...jbyteArray pCharTojbyteArr(JNIEnv *env, char *buf, int len) { jbyteArray array = env->NewByteArray...extern "C" JNIEXPORT jbyteArray JNICALL Java_com_vaccae_vnanomsg_utils_NanoMsgJNI_recvbyte( JNIEnv...*env, jobject, jint socketid_ ) { jbyteArray recvbytes = NULL; try {
GB2312"); jmethodID mid = env->GetMethodID(clsstring, "getBytes", "(Ljava/lang/String;)[B"); jbyteArray...barr = (jbyteArray) env->CallObjectMethod(jstr, mid, strencode); jsize alen = env->GetArrayLength...jmethodID mid = env->GetMethodID(clsstring, "getBytes", "(Ljava/lang/String;)[B"); jbyteArray...barr = (jbyteArray) env->CallObjectMethod(jstr, mid, strencode); jsize alen = env->GetArrayLength
*/ extern "C" JNIEXPORT jbyteArray JNICALL Java_org_doubango_ngn_media_mixer_MultiAudioMixer_audioMix2...(JNIEnv *env, jobject instance, jbyteArray...sourceA_, jbyteArray sourceB_,...jbyteArray dst_, jfloat firstVol, jfloat...(jbyte) ((result[i] & 0xFF00) >> 8); dst[i * 2] = (jbyte) (result[i] & 0x00FF); } jbyteArray
(JNIEnv*, jobjectArray, jsize, jobject); jbooleanArray (*NewBooleanArray)(JNIEnv*, jsize); jbyteArray...GetBooleanArrayElements)(JNIEnv*, jbooleanArray, jboolean*); jbyte* (*GetByteArrayElements)(JNIEnv*, jbyteArray...jbooleanArray, jboolean*, jint); void (*ReleaseByteArrayElements)(JNIEnv*, jbyteArray...jsize, jsize, const jboolean*); void (*SetByteArrayRegion)(JNIEnv*, jbyteArray...typedef jarray jobjectArray; typedef jarray jbooleanArray; typedef jarray jbyteArray
(*env)->GetMethodID(env,clsstring, "getBytes", "(Ljava/lang/String;)[B"); //3:通过方法id,调用方法 jbyteArray...barr= (jbyteArray)(*env)->CallObjectMethod(env,jstr,mid,strencode); // String .getByte("GB2312")
jmethodID mid = (*env)->GetMethodID(env, clsstring, "getBytes", "(Ljava/lang/String;)[B"); jbyteArray...barr = (jbyteArray) (*env)->CallObjectMethod(env, jstr, mid, strencode); jsize alen = (*env)->GetArrayLength...jmethodID ctorID = (*env)->GetMethodID(env, strClass, "", "([BLjava/lang/String;)V"); jbyteArray...mid = (*env)->GetMethodID(env, clsstring, "getBytes", "(Ljava/lang/String;)[B"); jbyte *barr = (jbyteArray
byte C jchar char S jshort short 数组则以”[“开始,用两个字符表示 [I jintArray int[] [F jfloatArray float[] [B jbyteArray...这个你也可以去看 jni完全手册 JNI与C/C++数据类型的转换(效率开发) 字符数组与jbyteArray int byteSize = (int) env->GetArrayLength(jbyteArrayData...byteSize, reinterpret_cast(data)); data[byteSize] = '\0'; jbyte *jb = (jbyte*) data; //data是字符数组类型 jbyteArray...barr = (jbyteArray) env->CallObjectMethod(jstr, mid, strencode); jsize alen = env->GetArrayLength...jclass strClass = env->FindClass(); jmethodID ctorID = env->GetMethodID(strClass, , ); jbyteArray
utf-8"); jmethodID mid = env->GetMethodID(clsstring, "getBytes", "(Ljava/lang/String;)[B"); jbyteArray...barr= (jbyteArray)env->CallObjectMethod(jstr, mid, strencode); jsize alen = env->GetArrayLength(...; jmethodID strConstruct = env->GetMethodID(strClass, "", "([BLjava/lang/String;)V"); jbyteArray
Java_my_project_MyRealTimeImageProcessing_CameraPreview_ImageProcessing( JNIEnv* env, jobject thiz, jint width, jint height, jbyteArray...JNIEXPORT int JNICALL Java_com_ProjectName_nativecaller_ClassName_readYUV420SP(JNIEnv *env, jclass clz, jbyteArray
extern "C" JNIEXPORT void JNICALL Java_com_libyuv_util_YuvUtil_yuvNV21ToI420(JNIEnv *env, jclass jcls, jbyteArray...nv21Src, jint width, jint height, jbyteArray i420Dst) {
) | |--jobjectArray (object arrays) | |--jbooleanArray (boolean arrays) | |--jbyteArray...得到toCharsString方法的ID mid = env->GetMethodID(cls, "toByteArray", "()[B"); // 返回当前应用签名信息 jbyteArray...); } 注释已经很明显了,获取签名信息并且转换为MD5格式的,如下: jstring ToMd5(JNIEnv *env, jbyteArray source) { // MessageDigest...// digest方法 jmethodID midDigest = env->GetMethodID(classMessageDigest, "digest", "()[B"); jbyteArray...objArraySign = (jbyteArray) env->CallObjectMethod(objMessageDigest, midDigest); jsize intArrayLength
Java_com_libyuv_util_YuvUtil_compressYUV(JNIEnv *env, jclass type, jbyteArray...} extern "C" JNIEXPORT void JNICALL Java_com_libyuv_util_YuvUtil_cropYUV(JNIEnv *env, jclass type, jbyteArray...src_, jint width, jint height, jbyteArray dst_, jint dst_width,...extern "C" JNIEXPORT void JNICALL Java_com_libyuv_util_YuvUtil_yuvI420ToNV21(JNIEnv *env, jclass type, jbyteArray...i420Src, jbyteArray nv21Src,
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