Media Session: passing metadata from renderer/ to browser/.

content/renderer/media/android/renderer_media_session_manager.cc

 // Copyright 2015 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.
 
 #include "content/renderer/media/android/renderer_media_session_manager.h"
 
 #include "base/logging.h"
 #include "content/common/media/media_session_messages_android.h"
+#include "content/public/common/media_metadata.h"
 #include "content/public/renderer/render_thread.h"
 #include "content/renderer/media/android/webmediasession_android.h"
 
 namespace content {
 
 static const int kDefaultMediaSessionID = 0;
 
 RendererMediaSessionManager::RendererMediaSessionManager(
     RenderFrame* render_frame)
     : RenderFrameObserver(render_frame),
@@ skipping 33 matching lines @@
 }
 
 void RendererMediaSessionManager::Deactivate(
     int session_id,
     scoped_ptr<blink::WebMediaSessionDeactivateCallback> callback) {
   int request_id = pending_deactivation_requests_.Add(callback.release());
   Send(
       new MediaSessionHostMsg_Deactivate(routing_id(), session_id, request_id));
 }
 
+void RendererMediaSessionManager::SetMetadata(
+    int session_id,
+    const MediaMetadata& metadata) {
+  // Apply some sanity checks on the MediaMetadata before sending over IPC.
+  MediaMetadata ipc_metadata;
+  ipc_metadata.title =
+      metadata.title.substr(0, MediaMetadata::kMaxIPCStringLength);
+  ipc_metadata.artist =
+      metadata.artist.substr(0, MediaMetadata::kMaxIPCStringLength);
+  ipc_metadata.album =
+      metadata.album.substr(0, MediaMetadata::kMaxIPCStringLength);
+
+  Send(new MediaSessionHostMsg_SetMetadata(routing_id(),
+                                           session_id,
+                                           ipc_metadata));
+}
+
 void RendererMediaSessionManager::OnDidActivate(int request_id, bool success) {
   DCHECK(pending_activation_requests_.Lookup(request_id)) << request_id;
   blink::WebMediaSessionActivateCallback* callback =
       pending_activation_requests_.Lookup(request_id);
   if (success) {
     callback->onSuccess();
   } else {
     callback->onError(
         blink::WebMediaSessionError(blink::WebMediaSessionError::Activate));
   }
   pending_activation_requests_.Remove(request_id);
 }
 
 void RendererMediaSessionManager::OnDidDeactivate(int request_id) {
   DCHECK(pending_deactivation_requests_.Lookup(request_id)) << request_id;
   pending_deactivation_requests_.Lookup(request_id)->onSuccess();
   pending_deactivation_requests_.Remove(request_id);
 }
 
 }  // namespace content