[4] | 1 | /**
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| 2 | * @file jni.cpp
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| 3 | * @author myusgun@gmail.com
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| 4 | * @brief JNI
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| 5 | */
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| 6 | #ifdef _USE_JNI
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| 7 | #include "cf/jni.h"
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| 8 | #include "cf/types.h"
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| 9 |
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| 10 | #include <stdio.h>
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| 11 | #include <stdarg.h>
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| 12 |
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| 13 | using namespace cf;
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| 14 |
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| 15 | #define USE_JNI_PRIMITIVE
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| 16 |
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| 17 | cf::void_t jni::releaseByteArray(jbyteArray jinput,
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| 18 | cf::char_t * in)
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| 19 | {
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| 20 | if(!jinput || !in)
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| 21 | return;
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| 22 |
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| 23 | #ifdef USE_JNI_PRIMITIVE
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| 24 | mJNIEnv->ReleasePrimitiveArrayCritical((jarray)jinput, (cf::void_t *)in, JNI_ABORT);
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| 25 | #else
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| 26 | mJNIEnv->ReleaseByteArrayElements(jinput, (jbyte *)in, JNI_ABORT);
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| 27 | #endif
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| 28 | }
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| 29 |
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| 30 | cf::void_t jni::releaseString(jstring jinput,
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| 31 | cf::char_t * in)
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| 32 | {
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| 33 | if(!jinput || !in)
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| 34 | return;
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| 35 |
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| 36 | mJNIEnv->ReleaseStringUTFChars(jinput, in);
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| 37 | }
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| 38 |
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| 39 | cf::void_t jni::releaseLocalMemory(jobject in)
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| 40 | {
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| 41 | /* collected by GC */
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| 42 | #if 0
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| 43 | mJNIEnv->DeleteLocalRef(in);
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| 44 | #endif
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| 45 | }
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| 46 |
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| 47 | bin jni::getByteArray(jbyteArray jinput)
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| 48 | throw (exception)
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| 49 | {
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| 50 | jboolean isCopy;
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| 51 | bin out;
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| 52 |
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| 53 | cf::char_t * buf = NULL;
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| 54 | cf::int32_t len = 0;
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| 55 |
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| 56 | if(!jinput)
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| 57 | THROW_EXCEPTION("input from java is null");
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| 58 |
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| 59 | #ifdef USE_JNI_PRIMITIVE
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| 60 | /**
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| 61 | * NOTE
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| 62 | * read-only
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| 63 | */
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| 64 | isCopy = JNI_FALSE;
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| 65 | buf = (cf::char_t *)mJNIEnv->GetPrimitiveArrayCritical((jarray)jinput, &isCopy);
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| 66 | if(!buf)
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| 67 | THROW_EXCEPTION("failed to GetPrimitiveArrayCritical");
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| 68 | #else
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| 69 | buf = (cf::char_t *)mJNIEnv->GetByteArrayElements(jinput, &isCopy);
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| 70 | #endif
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| 71 | len = (cf::int32_t)mJNIEnv->GetArrayLength(jinput);
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| 72 |
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| 73 | out.copy((cf::uint8_t *)buf, len);
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| 74 |
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| 75 | releaseByteArray(jinput, buf);
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| 76 |
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| 77 | return out;
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| 78 | }
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| 79 |
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| 80 | std::string jni::getString(jstring jinput)
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| 81 | throw (exception)
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| 82 | {
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| 83 | if(!jinput)
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| 84 | THROW_EXCEPTION("input from java is null");
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| 85 |
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| 86 | jboolean isCopy;
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| 87 | cf::char_t * buf = (cf::char_t *)mJNIEnv->GetStringUTFChars(jinput, &isCopy);
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| 88 | std::string out = buf;
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| 89 |
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| 90 | releaseString(jinput, buf);
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| 91 |
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| 92 | return out;
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| 93 | }
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| 94 |
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| 95 | cf::void_t jni::throwException(const cf::char_t * message)
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| 96 | {
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| 97 | jthrowable occurred = mJNIEnv->ExceptionOccurred();
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| 98 | if(occurred)
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| 99 | mJNIEnv->Throw(occurred);
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| 100 |
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| 101 | jclass exClass = mJNIEnv->FindClass("java/lang/Exception");
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| 102 |
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| 103 | mJNIEnv->ThrowNew(exClass, message);
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| 104 | }
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| 105 |
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| 106 | jbyteArray jni::newByteArray(const bin & in)
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| 107 | {
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| 108 | jbyteArray out = NULL;
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| 109 |
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| 110 | out = mJNIEnv->NewByteArray((jsize)in.length());
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| 111 | if(!out)
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| 112 | return NULL;
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| 113 |
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| 114 | mJNIEnv->SetByteArrayRegion(out, 0, (jsize)in.length(), (jbyte *)in.value());
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| 115 |
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| 116 | return out;
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| 117 | }
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| 118 |
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| 119 | jstring jni::newString(const std::string & in)
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| 120 | {
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| 121 | return mJNIEnv->NewStringUTF(in.c_str());
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| 122 | }
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| 123 |
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| 124 | #endif // #ifdef _USE_JNI
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