1 /*
2 * Copyright (C) 2020 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #define LOG_TAG "GnssUtilsJni"
18
19 #include "Utils.h"
20
21 namespace android {
22
23 namespace {
24
25 thread_local std::unique_ptr<ScopedJniThreadAttach> tJniThreadAttacher;
26
27 } // anonymous namespace
28
29 // Define Java method signatures for all known types.
30 template <>
31 const char* const JavaMethodHelper<uint8_t>::signature_ = "(B)V";
32 template <>
33 const char* const JavaMethodHelper<int8_t>::signature_ = "(B)V";
34 template <>
35 const char* const JavaMethodHelper<int16_t>::signature_ = "(S)V";
36 template <>
37 const char* const JavaMethodHelper<uint16_t>::signature_ = "(S)V";
38 template <>
39 const char* const JavaMethodHelper<int32_t>::signature_ = "(I)V";
40 template <>
41 const char* const JavaMethodHelper<uint32_t>::signature_ = "(I)V";
42 template <>
43 const char* const JavaMethodHelper<int64_t>::signature_ = "(J)V";
44 template <>
45 const char* const JavaMethodHelper<uint64_t>::signature_ = "(J)V";
46 template <>
47 const char* const JavaMethodHelper<float>::signature_ = "(F)V";
48 template <>
49 const char* const JavaMethodHelper<double>::signature_ = "(D)V";
50 template <>
51 const char* const JavaMethodHelper<bool>::signature_ = "(Z)V";
52 template <>
53 const char* const JavaMethodHelper<jstring>::signature_ = "(Ljava/lang/String;)V";
54 template <>
55 const char* const JavaMethodHelper<jdoubleArray>::signature_ = "([D)V";
56
checkAidlStatus(const android::binder::Status & status,const char * errorMessage)57 jboolean checkAidlStatus(const android::binder::Status& status, const char* errorMessage) {
58 if (!status.isOk()) {
59 ALOGE("%s AIDL transport error: %s", errorMessage, status.toString8().c_str());
60 return JNI_FALSE;
61 }
62 return JNI_TRUE;
63 }
64
checkHidlReturn(hardware::Return<bool> & result,const char * errorMessage)65 jboolean checkHidlReturn(hardware::Return<bool>& result, const char* errorMessage) {
66 if (!result.isOk()) {
67 logHidlError(result, errorMessage);
68 return JNI_FALSE;
69 } else if (!result) {
70 ALOGE("%s", errorMessage);
71 return JNI_FALSE;
72 } else {
73 return JNI_TRUE;
74 }
75 }
76
checkAndClearExceptionFromCallback(JNIEnv * env,const char * methodName)77 void checkAndClearExceptionFromCallback(JNIEnv* env, const char* methodName) {
78 if (env->ExceptionCheck()) {
79 ALOGE("An exception was thrown by callback '%s'.", methodName);
80 LOGE_EX(env);
81 env->ExceptionClear();
82 }
83 }
84
JavaObject(JNIEnv * env,jclass clazz,jmethodID defaultCtor)85 JavaObject::JavaObject(JNIEnv* env, jclass clazz, jmethodID defaultCtor)
86 : env_(env), clazz_(clazz) {
87 object_ = env_->NewObject(clazz_, defaultCtor);
88 }
89
JavaObject(JNIEnv * env,jclass clazz,jmethodID stringCtor,const char * sz_arg_1)90 JavaObject::JavaObject(JNIEnv* env, jclass clazz, jmethodID stringCtor, const char* sz_arg_1)
91 : env_(env), clazz_(clazz) {
92 jstring szArg = env->NewStringUTF(sz_arg_1);
93 object_ = env_->NewObject(clazz_, stringCtor, szArg);
94 if (szArg) {
95 env_->DeleteLocalRef(szArg);
96 }
97 }
98
JavaObject(JNIEnv * env,jclass clazz,jobject object)99 JavaObject::JavaObject(JNIEnv* env, jclass clazz, jobject object)
100 : env_(env), clazz_(clazz), object_(object) {}
101
102 template <>
callSetter(const char * method_name,uint8_t * value,size_t size)103 void JavaObject::callSetter(const char* method_name, uint8_t* value, size_t size) {
104 jbyteArray array = env_->NewByteArray(size);
105 env_->SetByteArrayRegion(array, 0, size, reinterpret_cast<jbyte*>(value));
106 jmethodID method = env_->GetMethodID(clazz_, method_name, "([B)V");
107 env_->CallVoidMethod(object_, method, array);
108 env_->DeleteLocalRef(array);
109 }
110
getJniEnv()111 JNIEnv* getJniEnv() {
112 JNIEnv* env = AndroidRuntime::getJNIEnv();
113
114 /*
115 * If env is nullptr, the thread is not already attached to
116 * JNI. It is attached below and the destructor for ScopedJniThreadAttach
117 * will detach it on thread exit.
118 */
119 if (env == nullptr) {
120 tJniThreadAttacher.reset(new ScopedJniThreadAttach());
121 env = tJniThreadAttacher->getEnv();
122 }
123
124 return env;
125 }
126
127 } // namespace android
128