1 files changed, 42 insertions, 0 deletions
diff --git a/third_party/libwebrtc/modules/audio_device/android/ensure_initialized.cc b/third_party/libwebrtc/modules/audio_device/android/ensure_initialized.cc
new file mode 100644
index 0000000000..59e9c8f7a6
--- /dev/null
+++ b/third_party/libwebrtc/modules/audio_device/android/ensure_initialized.cc
@@ -0,0 +1,42 @@
+/*
+ *  Copyright (c) 2015 The WebRTC project authors. All Rights Reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+
+#include "modules/audio_device/android/ensure_initialized.h"
+
+#include <jni.h>
+#include <pthread.h>
+#include <stddef.h>
+
+#include "modules/utility/include/jvm_android.h"
+#include "rtc_base/checks.h"
+#include "sdk/android/src/jni/jvm.h"
+
+namespace webrtc {
+namespace audiodevicemodule {
+
+static pthread_once_t g_initialize_once = PTHREAD_ONCE_INIT;
+
+void EnsureInitializedOnce() {
+  RTC_CHECK(::webrtc::jni::GetJVM() != nullptr);
+
+  JNIEnv* jni = ::webrtc::jni::AttachCurrentThreadIfNeeded();
+  JavaVM* jvm = NULL;
+  RTC_CHECK_EQ(0, jni->GetJavaVM(&jvm));
+
+  // Initialize the Java environment (currently only used by the audio manager).
+  webrtc::JVM::Initialize(jvm);
+}
+
+void EnsureInitialized() {
+  RTC_CHECK_EQ(0, pthread_once(&g_initialize_once, &EnsureInitializedOnce));
+}
+
+}  // namespace audiodevicemodule
+}  // namespace webrtc