/*
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* libjingle
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* Copyright 2015 Google Inc.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
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* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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#include "talk/app/webrtc/java/jni/classreferenceholder.h"
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#include "talk/app/webrtc/java/jni/jni_helpers.h"
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namespace webrtc_jni {
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// ClassReferenceHolder holds global reference to Java classes in app/webrtc.
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class ClassReferenceHolder {
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public:
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explicit ClassReferenceHolder(JNIEnv* jni);
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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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// Allocated in LoadGlobalClassReferenceHolder(),
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// freed in FreeGlobalClassReferenceHolder().
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static ClassReferenceHolder* g_class_reference_holder = nullptr;
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void LoadGlobalClassReferenceHolder() {
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RTC_CHECK(g_class_reference_holder == nullptr);
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g_class_reference_holder = new ClassReferenceHolder(GetEnv());
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}
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void FreeGlobalClassReferenceHolder() {
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g_class_reference_holder->FreeReferences(AttachCurrentThreadIfNeeded());
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delete g_class_reference_holder;
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g_class_reference_holder = nullptr;
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}
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ClassReferenceHolder::ClassReferenceHolder(JNIEnv* jni) {
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LoadClass(jni, "java/nio/ByteBuffer");
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LoadClass(jni, "java/util/ArrayList");
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LoadClass(jni, "org/webrtc/AudioTrack");
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LoadClass(jni, "org/webrtc/DataChannel");
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LoadClass(jni, "org/webrtc/DataChannel$Buffer");
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LoadClass(jni, "org/webrtc/DataChannel$Init");
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LoadClass(jni, "org/webrtc/DataChannel$State");
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LoadClass(jni, "org/webrtc/IceCandidate");
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#if defined(ANDROID) && !defined(WEBRTC_CHROMIUM_BUILD)
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LoadClass(jni, "android/graphics/SurfaceTexture");
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LoadClass(jni, "org/webrtc/CameraEnumerator");
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LoadClass(jni, "org/webrtc/Camera2Enumerator");
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LoadClass(jni, "org/webrtc/CameraEnumerationAndroid");
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LoadClass(jni, "org/webrtc/VideoCapturerAndroid");
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LoadClass(jni, "org/webrtc/VideoCapturerAndroid$NativeObserver");
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LoadClass(jni, "org/webrtc/EglBase");
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LoadClass(jni, "org/webrtc/EglBase$Context");
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LoadClass(jni, "org/webrtc/EglBase14$Context");
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LoadClass(jni, "org/webrtc/NetworkMonitor");
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LoadClass(jni, "org/webrtc/MediaCodecVideoEncoder");
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LoadClass(jni, "org/webrtc/MediaCodecVideoEncoder$OutputBufferInfo");
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LoadClass(jni, "org/webrtc/MediaCodecVideoEncoder$VideoCodecType");
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LoadClass(jni, "org/webrtc/MediaCodecVideoDecoder");
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LoadClass(jni, "org/webrtc/MediaCodecVideoDecoder$DecodedTextureBuffer");
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LoadClass(jni, "org/webrtc/MediaCodecVideoDecoder$DecodedOutputBuffer");
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LoadClass(jni, "org/webrtc/MediaCodecVideoDecoder$VideoCodecType");
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LoadClass(jni, "org/webrtc/SurfaceTextureHelper");
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#endif
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LoadClass(jni, "org/webrtc/MediaSource$State");
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LoadClass(jni, "org/webrtc/MediaStream");
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LoadClass(jni, "org/webrtc/MediaStreamTrack$State");
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LoadClass(jni, "org/webrtc/PeerConnectionFactory");
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LoadClass(jni, "org/webrtc/PeerConnection$BundlePolicy");
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LoadClass(jni, "org/webrtc/PeerConnection$ContinualGatheringPolicy");
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LoadClass(jni, "org/webrtc/PeerConnection$RtcpMuxPolicy");
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LoadClass(jni, "org/webrtc/PeerConnection$IceConnectionState");
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LoadClass(jni, "org/webrtc/PeerConnection$IceGatheringState");
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LoadClass(jni, "org/webrtc/PeerConnection$IceTransportsType");
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LoadClass(jni, "org/webrtc/PeerConnection$TcpCandidatePolicy");
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LoadClass(jni, "org/webrtc/PeerConnection$KeyType");
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LoadClass(jni, "org/webrtc/PeerConnection$SignalingState");
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LoadClass(jni, "org/webrtc/RtpReceiver");
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LoadClass(jni, "org/webrtc/RtpSender");
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LoadClass(jni, "org/webrtc/SessionDescription");
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LoadClass(jni, "org/webrtc/SessionDescription$Type");
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LoadClass(jni, "org/webrtc/StatsReport");
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LoadClass(jni, "org/webrtc/StatsReport$Value");
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LoadClass(jni, "org/webrtc/VideoRenderer$I420Frame");
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LoadClass(jni, "org/webrtc/VideoCapturer");
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LoadClass(jni, "org/webrtc/VideoTrack");
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}
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ClassReferenceHolder::~ClassReferenceHolder() {
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RTC_CHECK(classes_.empty()) << "Must call FreeReferences() before dtor!";
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}
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void ClassReferenceHolder::FreeReferences(JNIEnv* jni) {
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for (std::map<std::string, jclass>::const_iterator it = classes_.begin();
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it != classes_.end(); ++it) {
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jni->DeleteGlobalRef(it->second);
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}
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classes_.clear();
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}
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jclass ClassReferenceHolder::GetClass(const std::string& name) {
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std::map<std::string, jclass>::iterator it = classes_.find(name);
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RTC_CHECK(it != classes_.end()) << "Unexpected GetClass() call for: " << name;
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return it->second;
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}
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void ClassReferenceHolder::LoadClass(JNIEnv* jni, const std::string& name) {
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jclass localRef = jni->FindClass(name.c_str());
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CHECK_EXCEPTION(jni) << "error during FindClass: " << name;
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RTC_CHECK(localRef) << name;
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jclass globalRef = reinterpret_cast<jclass>(jni->NewGlobalRef(localRef));
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CHECK_EXCEPTION(jni) << "error during NewGlobalRef: " << name;
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RTC_CHECK(globalRef) << name;
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bool inserted = classes_.insert(std::make_pair(name, globalRef)).second;
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RTC_CHECK(inserted) << "Duplicate class name: " << name;
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}
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// Returns a global reference guaranteed to be valid for the lifetime of the
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// process.
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jclass FindClass(JNIEnv* jni, const char* name) {
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return g_class_reference_holder->GetClass(name);
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}
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} // namespace webrtc_jni
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