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Unified Diff: content/browser/media/session/media_session_delegate_android.h

Issue 2439483003: Link MediaSessionTabHelper with native MediaSession [CL is going to be split] (Closed)
Patch Set: addressed comments Created 4 years, 2 months ago
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Index: content/browser/media/session/media_session_delegate_android.h
diff --git a/content/browser/media/session/media_session_delegate_android.h b/content/browser/media/session/media_session_delegate_android.h
new file mode 100644
index 0000000000000000000000000000000000000000..dfc55719e215fc6fd0419c57f81be1fefaa45815
--- /dev/null
+++ b/content/browser/media/session/media_session_delegate_android.h
@@ -0,0 +1,68 @@
+// Copyright 2016 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef CONTENT_BROWSER_MEDIA_SESSION_MEDIA_SESSION_DELEGATE_ANDROID_H_
+#define CONTENT_BROWSER_MEDIA_SESSION_MEDIA_SESSION_DELEGATE_ANDROID_H_
+
+#include <jni.h>
+
+#include "base/android/jni_weak_ref.h"
+#include "content/browser/media/session/media_session_observer.h"
+
+namespace content {
+
+// The class for listening to MediaSession messages and perform actions on the
+// MediaSession. This class is the native counterpart of Java
+// MediaSessionDelegate. The native object and the linked Java object must
+// notify each other when any of them is destroyed.
+class MediaSessionDelegateAndroid : public MediaSessionObserver {
+ public:
+ static bool Register(JNIEnv* env);
+
+ // Create a native MediaSessionDelegate object, start observe |media_session|,
+ // and link it to the |j_delegate| (its Java counterpart).
+ static void CreateAndConnect(
+ MediaSession* media_session,
+ JNIEnv* env,
+ const base::android::JavaParamRef<jobject>& j_delegate);
+
+ ~MediaSessionDelegateAndroid() override;
+
+ // MediaSessionObserver implementations
+ void MediaSessionDisconnected() override;
+ void MediaSessionStateChanged(bool is_controllable,
+ bool is_suspended) override;
+ void MediaSessionMetadataChanged(
+ const base::Optional<MediaMetadata>& metadata) override;
+
+ // Resume the connected MediaSession.
+ void ResumeMediaSession(JNIEnv* env,
+ const base::android::JavaParamRef<jobject>& obj);
+ // Suspend the connected MediaSession.
+ void SuspendMediaSession(JNIEnv* env,
+ const base::android::JavaParamRef<jobject>& obj);
+ // Stop the connected MediaSession.
+ void StopMediaSession(JNIEnv* env,
+ const base::android::JavaParamRef<jobject>& obj);
+ // Disconnect the connected MediaSession.
+ void DisconnectMediaSession(JNIEnv* env,
+ const base::android::JavaParamRef<jobject>& obj);
+
+ private:
+ // Create a MediaSessionDelegateAndroid object and start observing
+ // |media_session|. Does not tell |j_delegate| to connect this object.
+ MediaSessionDelegateAndroid(
+ MediaSession* media_session,
+ JNIEnv* env,
+ const base::android::JavaParamRef<jobject>& j_delegate);
+
+ // The linked Java counterpart.
+ JavaObjectWeakGlobalRef j_delegate_;
+
+ DISALLOW_COPY_AND_ASSIGN(MediaSessionDelegateAndroid);
+};
+
+} // namespace content
+
+#endif // CONTENT_BROWSER_MEDIA_SESSION_MEDIA_SESSION_DELEGATE_ANDROID_H_

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