1 /* 2 * Copyright (c) 2015 The WebRTC project authors. All Rights Reserved. 3 * 4 * Use of this source code is governed by a BSD-style license 5 * that can be found in the LICENSE file in the root of the source 6 * tree. An additional intellectual property rights grant can be found 7 * in the file PATENTS. All contributing project authors may 8 * be found in the AUTHORS file in the root of the source tree. 9 */ 10 11 #include "modules/audio_device/android/ensure_initialized.h" 12 13 #include <jni.h> 14 #include <pthread.h> 15 #include <stddef.h> 16 17 #include "modules/utility/include/jvm_android.h" 18 #include "rtc_base/checks.h" 19 #include "sdk/android/src/jni/jvm.h" 20 21 namespace webrtc { 22 namespace audiodevicemodule { 23 24 static pthread_once_t g_initialize_once = PTHREAD_ONCE_INIT; 25 EnsureInitializedOnce()26void EnsureInitializedOnce() { 27 RTC_CHECK(::webrtc::jni::GetJVM() != nullptr); 28 29 JNIEnv* jni = ::webrtc::jni::AttachCurrentThreadIfNeeded(); 30 JavaVM* jvm = NULL; 31 RTC_CHECK_EQ(0, jni->GetJavaVM(&jvm)); 32 33 // Initialize the Java environment (currently only used by the audio manager). 34 webrtc::JVM::Initialize(jvm); 35 } 36 EnsureInitialized()37void EnsureInitialized() { 38 RTC_CHECK_EQ(0, pthread_once(&g_initialize_once, &EnsureInitializedOnce)); 39 } 40 41 } // namespace audiodevicemodule 42 } // namespace webrtc 43