Support CAST+WMPI on android

media/blink/webmediaplayer_cast_android.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.
+
+// Delete this file when WMPI_CAST is no longer needed.
+
+#ifndef MEDIA_BLINK_WEBMEDIAPLAYER_CAST_H_
+#define MEDIA_BLINK_WEBMEDIAPLAYER_CAST_H_
+
+#include "base/memory/weak_ptr.h"
+#include "media/blink/media_blink_export.h"
+#include "media/blink/renderer_media_player_interface.h"
+#include "media/blink/webmediaplayer_params.h"
+#include "url/gurl.h"
+
+namespace blink {
+class WebLocalFrame;
+class WebMediaPlayerClient;
+}
+
+namespace media {
+
+class VideoFrame;
+class WebMediaPlayerDelegate;
+class WebMediaPlayerImpl;
+
+// This shim allows WebMediaPlayer to act sufficiently similar to
+// WebMediaPlayerAndroid (by extending RendererMediaPlayerInterface)
+// to implement cast functionality.
+class WebMediaPlayerCast : public RendererMediaPlayerInterface {
+ public:
+  WebMediaPlayerCast(WebMediaPlayerImpl* impl,
+                     blink::WebMediaPlayerClient* client,
+                     const WebMediaPlayerParams::Context3DCB& context_3d_cb,
+                     base::WeakPtr<WebMediaPlayerDelegate> delegate);
+  ~WebMediaPlayerCast();
+
+  void Initialize(const GURL& url, blink::WebLocalFrame* frame);
+
+  void requestRemotePlayback();
+  void requestRemotePlaybackControl();
+
+  void SetMediaPlayerManager(
+      RendererMediaPlayerManagerInterface* media_player_manager);
+  bool isRemote() const { return is_remote_; }
+
+  double currentTime() const;
+  void play();
+  void pause();
+  void seek(base::TimeDelta t);
+
+  // RendererMediaPlayerInterface implementation
+  void OnMediaMetadataChanged(base::TimeDelta duration,
+                              int width,
+                              int height,
+                              bool success) override;
+  void OnPlaybackComplete() override;
+  void OnBufferingUpdate(int percentage) override;
+  void OnSeekRequest(const base::TimeDelta& time_to_seek) override;
+  void OnSeekComplete(const base::TimeDelta& current_time) override;
+  void OnMediaError(int error_type) override;
+  void OnVideoSizeChanged(int width, int height) override;
+
+  // Called to update the current time.
+  void OnTimeUpdate(base::TimeDelta current_timestamp,
+                    base::TimeTicks current_time_ticks) override;
+
+  // void OnWaitingForDecryptionKey() override;
+  void OnPlayerReleased() override;
+
+  // Functions called when media player status changes.
+  void OnConnectedToRemoteDevice(
+      const std::string& remote_playback_message) override;
+  void OnDisconnectedFromRemoteDevice() override;
+  void OnDidExitFullscreen() override;
+  void OnMediaPlayerPlay() override;
+  void OnMediaPlayerPause() override;
+  void OnRemoteRouteAvailabilityChanged(bool routes_available) override;
+
+  // Getters of playback state.
+  // bool paused() const override;
+
+  // True if the loaded media has a playable video track.
+  // bool hasVideo() const override;
+
+  // This function is called by the RendererMediaPlayerManager to pause the
+  // video and release the media player and surface texture when we switch tabs.
+  // However, the actual GlTexture is not released to keep the video screenshot.
+  void SuspendAndReleaseResources() override;
+
+#if defined(VIDEO_HOLE)
+  // Calculate the boundary rectangle of the media player (i.e. location and
+  // size of the video frame).
+  // Returns true if the geometry has been changed since the last call.
+  bool UpdateBoundaryRectangle() override;
+
+  const gfx::RectF GetBoundaryRectangle() override;
+#endif
+
+  void OnWaitingForDecryptionKey() override;
+
+  bool paused() const override;
+  bool hasVideo() const override;
+
+  void SetDeviceScaleFactor(float scale_factor);
+  scoped_refptr<VideoFrame> GetCastingBanner();
+
+ private:
+  WebMediaPlayerImpl* webmediaplayer_;
+  blink::WebMediaPlayerClient* client_;
+  WebMediaPlayerParams::Context3DCB context_3d_cb_;
+  base::WeakPtr<WebMediaPlayerDelegate> delegate_;
+
+  // Manages this object and delegates player calls to the browser process.
+  // Owned by RenderFrameImpl.
+  RendererMediaPlayerManagerInterface* player_manager_ = nullptr;
+
+  // Player ID assigned by the |player_manager_|.
+  int player_id_;
+
+  // Whether the browser is currently connected to a remote media player.
+  bool is_remote_ = false;
+
+  bool paused_ = true;
+  bool initializing_ = false;
+  bool should_notify_time_changed_ = false;
+
+  // Last reported playout time.
+  base::TimeDelta remote_time_;
+  base::TimeTicks remote_time_at_;
+
+  // Whether the media player has been initialized.
+  bool is_player_initialized_ = false;
+
+  std::string remote_playback_message_;
+
+  float device_scale_factor_ = 1.0;
+
+  DISALLOW_COPY_AND_ASSIGN(WebMediaPlayerCast);
+};
+
+// Make a texture-backed video of the given size containing the given message.
+MEDIA_BLINK_EXPORT scoped_refptr<VideoFrame> MakeTextFrameForCast(
+    const std::string& remote_playback_message,
+    gfx::Size canvas_size,
+    gfx::Size natural_size,
+    const base::Callback<gpu::gles2::GLES2Interface*()>& context_3d_cb);
+
+}  // namespace media
+
+#endif  // MEDIA_BLINK_WEBMEDIAPLAYER_CAST_H_