Media Remoting: Update remoting interstitial when status changes.

media/remoting/remoting_interstitial_ui.h

 // 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 MEDIA_REMOTING_REMOTING_INTERSTITIAL_UI_H_
 #define MEDIA_REMOTING_REMOTING_INTERSTITIAL_UI_H_
 
-#include "base/callback.h"
-#include "base/memory/ref_counted.h"
-#include "media/base/pipeline_metadata.h"
 #include "third_party/skia/include/core/SkBitmap.h"
 
+namespace gfx {
+class Size;
+}
+
 namespace media {
 
-class VideoFrame;
 class VideoRendererSink;
 
-class RemotingInterstitialUI {
- public:
-  RemotingInterstitialUI(VideoRendererSink* video_renderer_sink,
-                         const PipelineMetadata& pipeline_metadata);
-  ~RemotingInterstitialUI();
+enum RemotingInterstitialType {
+  BETWEEN_SESSIONS,             // Show background image only.
+  IN_SESSION,                   // Show MEDIA_REMOTING_CASTING_VIDEO_TEXT.
+  ENCRYPTED_MEDIA_FATAL_ERROR,  // Show MEDIA_REMOTING_CAST_ERROR_TEXT.
+};
 
-  void ShowInterstitial(bool is_remoting_successful);
-
- private:
-  // Gets an 'interstitial' VideoFrame to paint on the media player when the
-  // video is being played remotely.
-  scoped_refptr<VideoFrame> GetInterstitial(const SkBitmap& background_image,
-                                            bool is_remoting_successful);
-
-  VideoRendererSink* const video_renderer_sink_;  // Outlives this class.
-  PipelineMetadata pipeline_metadata_;
-
-  DISALLOW_COPY_AND_ASSIGN(RemotingInterstitialUI);
-};
+// Draw remoting interstitial on |background_image| and show it.

[miu, 2016/12/20 21:21:04]

nit: First sentence should be something like "Paint an interstitial frame and
send it to the given VideoRendererSink."

[xjz, 2016/12/20 22:15:37]

Done.

+// |background_image| will be scaled to fit in |canvas_size|, but keep its
+// aspect ratio. When has different aspect ratio with |canvas_size|, scaled
+// |background_image| will be centered in the canvas. When |background_image|
+// is empty, interstitial will be drawn on a blank and black background. When
+// |interstial_type| is BETWEEN_SESSIONS, show background image only.
+void PaintRemotingInterstitial(const SkBitmap& background_image,
+                               const gfx::Size& canvas_size,
+                               RemotingInterstitialType interstitial_type,
+                               VideoRendererSink* video_renderer_sink);
 
 }  // namespace media
 
 #endif  // MEDIA_REMOTING_REMOTING_INTERSTITIAL_UI_H_