451745ec05
BUG=2122 R=andrew@webrtc.org, fischman@webrtc.org Review URL: https://webrtc-codereview.appspot.com/3669004 git-svn-id: http://webrtc.googlecode.com/svn/trunk@5273 4adac7df-926f-26a2-2b94-8c16560cd09d
82 lines
3.0 KiB
C++
82 lines
3.0 KiB
C++
/*
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* Copyright (c) 2013 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#ifndef WEBRTC_EXAMPLES_ANDROID_MEDIA_DEMO_JNI_JNI_HELPERS_H_
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#define WEBRTC_EXAMPLES_ANDROID_MEDIA_DEMO_JNI_JNI_HELPERS_H_
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// TODO(henrike): this file contains duplication with regards to
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// talk/app/webrtc/java/jni/peerconnection_jni.cc. When/if code can be shared
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// between trunk/talk and trunk/webrtc remove the duplication.
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#include <android/log.h>
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#include <jni.h>
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#include <map>
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#include <string>
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#define TAG "WEBRTC-NATIVE"
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// Abort the process if |x| is false, emitting |msg| to logcat.
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#define CHECK(x, msg) \
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if (x) { \
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} else { \
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__android_log_print(ANDROID_LOG_ERROR, TAG, "%s:%d: %s", __FILE__, \
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__LINE__, msg); \
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abort(); \
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}
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// Abort the process if |jni| has a Java exception pending, emitting |msg| to
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// logcat.
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#define CHECK_EXCEPTION(jni, msg) \
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if (0) { \
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} else { \
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if (jni->ExceptionCheck()) { \
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jni->ExceptionDescribe(); \
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jni->ExceptionClear(); \
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CHECK(0, msg); \
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} \
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}
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#define ARRAYSIZE(instance) \
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static_cast<int>(sizeof(instance) / sizeof(instance[0]))
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// JNIEnv-helper methods that CHECK success: no Java exception thrown and found
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// object/class/method/field is non-null.
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jmethodID GetMethodID(JNIEnv* jni, jclass c, const std::string& name,
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const char* signature);
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// Return a |jlong| that will automatically convert back to |ptr| when assigned
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// to a |uint64|
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jlong jlongFromPointer(void* ptr);
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// Given a (UTF-16) jstring return a new UTF-8 native string.
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std::string JavaToStdString(JNIEnv* jni, const jstring& j_string);
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// Android's FindClass() is trickier than usual because the app-specific
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// ClassLoader is not consulted when there is no app-specific frame on the
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// stack. Consequently, we only look up classes once in JNI_OnLoad.
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// http://developer.android.com/training/articles/perf-jni.html#faq_FindClass
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class ClassReferenceHolder {
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public:
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ClassReferenceHolder(JNIEnv* jni, const char** classes, int size);
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~ClassReferenceHolder();
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void FreeReferences(JNIEnv* jni);
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jclass GetClass(const std::string& name);
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private:
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void LoadClass(JNIEnv* jni, const std::string& name);
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std::map<std::string, jclass> classes_;
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};
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#endif // WEBRTC_EXAMPLES_ANDROID_MEDIA_DEMO_JNI_JNI_HELPERS_H_
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