blob: fd37838a7f4c3728da588800f4ec2a137148cf98 [file] [log] [blame]
/*
* libjingle
* Copyright 2015 Google Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
#include "talk/app/webrtc/java/jni/classreferenceholder.h"
#include "talk/app/webrtc/java/jni/jni_helpers.h"
namespace webrtc_jni {
// ClassReferenceHolder holds global reference to Java classes in app/webrtc.
class ClassReferenceHolder {
public:
explicit ClassReferenceHolder(JNIEnv* jni);
~ClassReferenceHolder();
void FreeReferences(JNIEnv* jni);
jclass GetClass(const std::string& name);
private:
void LoadClass(JNIEnv* jni, const std::string& name);
std::map<std::string, jclass> classes_;
};
// Allocated in LoadGlobalClassReferenceHolder(),
// freed in FreeGlobalClassReferenceHolder().
static ClassReferenceHolder* g_class_reference_holder = nullptr;
void LoadGlobalClassReferenceHolder() {
CHECK(g_class_reference_holder == nullptr);
g_class_reference_holder = new ClassReferenceHolder(GetEnv());
}
void FreeGlobalClassReferenceHolder() {
g_class_reference_holder->FreeReferences(AttachCurrentThreadIfNeeded());
delete g_class_reference_holder;
g_class_reference_holder = nullptr;
}
ClassReferenceHolder::ClassReferenceHolder(JNIEnv* jni) {
LoadClass(jni, "java/nio/ByteBuffer");
LoadClass(jni, "org/webrtc/AudioTrack");
LoadClass(jni, "org/webrtc/DataChannel");
LoadClass(jni, "org/webrtc/DataChannel$Buffer");
LoadClass(jni, "org/webrtc/DataChannel$Init");
LoadClass(jni, "org/webrtc/DataChannel$State");
LoadClass(jni, "org/webrtc/IceCandidate");
#if defined(ANDROID) && !defined(WEBRTC_CHROMIUM_BUILD)
LoadClass(jni, "android/graphics/SurfaceTexture");
LoadClass(jni, "org/webrtc/CameraEnumerator");
LoadClass(jni, "org/webrtc/Camera2Enumerator");
LoadClass(jni, "org/webrtc/CameraEnumerationAndroid");
LoadClass(jni, "org/webrtc/VideoCapturerAndroid");
LoadClass(jni, "org/webrtc/VideoCapturerAndroid$NativeObserver");
LoadClass(jni, "org/webrtc/EglBase");
LoadClass(jni, "org/webrtc/MediaCodecVideoEncoder");
LoadClass(jni, "org/webrtc/MediaCodecVideoEncoder$OutputBufferInfo");
LoadClass(jni, "org/webrtc/MediaCodecVideoEncoder$VideoCodecType");
LoadClass(jni, "org/webrtc/MediaCodecVideoDecoder");
LoadClass(jni, "org/webrtc/MediaCodecVideoDecoder$DecoderOutputBufferInfo");
LoadClass(jni, "org/webrtc/MediaCodecVideoDecoder$VideoCodecType");
jclass j_egl_base_class = GetClass("org/webrtc/EglBase");
jmethodID j_is_egl14_supported_method = jni->GetStaticMethodID(
j_egl_base_class, "isEGL14Supported", "()Z");
bool is_egl14_supported = jni->CallStaticBooleanMethod(
j_egl_base_class, j_is_egl14_supported_method);
CHECK_EXCEPTION(jni);
if (is_egl14_supported) {
LoadClass(jni, "android/opengl/EGLContext");
}
#endif
LoadClass(jni, "org/webrtc/MediaSource$State");
LoadClass(jni, "org/webrtc/MediaStream");
LoadClass(jni, "org/webrtc/MediaStreamTrack$State");
LoadClass(jni, "org/webrtc/PeerConnection$BundlePolicy");
LoadClass(jni, "org/webrtc/PeerConnection$RtcpMuxPolicy");
LoadClass(jni, "org/webrtc/PeerConnection$IceConnectionState");
LoadClass(jni, "org/webrtc/PeerConnection$IceGatheringState");
LoadClass(jni, "org/webrtc/PeerConnection$IceTransportsType");
LoadClass(jni, "org/webrtc/PeerConnection$TcpCandidatePolicy");
LoadClass(jni, "org/webrtc/PeerConnection$KeyType");
LoadClass(jni, "org/webrtc/PeerConnection$SignalingState");
LoadClass(jni, "org/webrtc/SessionDescription");
LoadClass(jni, "org/webrtc/SessionDescription$Type");
LoadClass(jni, "org/webrtc/StatsReport");
LoadClass(jni, "org/webrtc/StatsReport$Value");
LoadClass(jni, "org/webrtc/VideoRenderer$I420Frame");
LoadClass(jni, "org/webrtc/VideoCapturer");
LoadClass(jni, "org/webrtc/VideoTrack");
}
ClassReferenceHolder::~ClassReferenceHolder() {
CHECK(classes_.empty()) << "Must call FreeReferences() before dtor!";
}
void ClassReferenceHolder::FreeReferences(JNIEnv* jni) {
for (std::map<std::string, jclass>::const_iterator it = classes_.begin();
it != classes_.end(); ++it) {
jni->DeleteGlobalRef(it->second);
}
classes_.clear();
}
jclass ClassReferenceHolder::GetClass(const std::string& name) {
std::map<std::string, jclass>::iterator it = classes_.find(name);
CHECK(it != classes_.end()) << "Unexpected GetClass() call for: " << name;
return it->second;
}
void ClassReferenceHolder::LoadClass(JNIEnv* jni, const std::string& name) {
jclass localRef = jni->FindClass(name.c_str());
CHECK_EXCEPTION(jni) << "error during FindClass: " << name;
CHECK(localRef) << name;
jclass globalRef = reinterpret_cast<jclass>(jni->NewGlobalRef(localRef));
CHECK_EXCEPTION(jni) << "error during NewGlobalRef: " << name;
CHECK(globalRef) << name;
bool inserted = classes_.insert(std::make_pair(name, globalRef)).second;
CHECK(inserted) << "Duplicate class name: " << name;
}
// Returns a global reference guaranteed to be valid for the lifetime of the
// process.
jclass FindClass(JNIEnv* jni, const char* name) {
return g_class_reference_holder->GetClass(name);
}
} // namespace webrtc_jni