Add MediaPlayerRenderer/MediaPlayerRendererClient

content/browser/media/android/media_player_renderer.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 CONTENT_BROWSER_MEDIA_ANDROID_MEDIA_PLAYER_RENDERER_H_
+#define CONTENT_BROWSER_MEDIA_ANDROID_MEDIA_PLAYER_RENDERER_H_
+
+#include "base/callback.h"
+#include "base/macros.h"
+#include "base/memory/weak_ptr.h"
+#include "content/common/content_export.h"
+#include "content/public/browser/render_frame_host.h"
+#include "media/base/android/media_player_bridge.h"
+#include "media/base/android/media_player_manager.h"
+#include "media/base/demuxer_stream_provider.h"
+#include "media/base/media_log.h"
+#include "media/base/renderer.h"
+#include "media/base/renderer_client.h"
+#include "url/gurl.h"
+
+namespace content {
+
+// MediaPlayerRenderer bridges the media::Renderer and Android MediaPlayer
+// interfaces. It owns a MediaPlayerBridge, which exposes c++ methods to call
+// into a native Android MediaPlayer.
+//
+// Each MediaPlayerRenderer is associated with one MediaPlayerRendererClient,
+// living in WMPI in the Renderer process.
+//
+// N.B: MediaPlayerRenderer implements MediaPlayerManager, since
+// MediaPlayerBridge is tightly coupled with the manager abstraction.
+// |player_id| is ignored in all MediaPlayerManager calls, as there is only one
+// MediaPlayer per MediaPlayerRenderer.
+//
+// TODO(tguilbert): Remove the MediaPlayerManager implementation and update
+// MediaPlayerBridge, once WMPA has been deleted. See http://crbug.com/580626
+class CONTENT_EXPORT MediaPlayerRenderer : public media::Renderer,
+                                           public media::MediaPlayerManager {
+ public:
+  explicit MediaPlayerRenderer(content::RenderFrameHost* render_frame_host);
+
+  ~MediaPlayerRenderer() override;
+
+  // media::Renderer implementation
+  void Initialize(media::DemuxerStreamProvider* demuxer_stream_provider,
+                  media::RendererClient* client,
+                  const media::PipelineStatusCB& init_cb) override;
+  void SetCdm(media::CdmContext* cdm_context,
+              const media::CdmAttachedCB& cdm_attached_cb) override;
+  void Flush(const base::Closure& flush_cb) override;
+  void StartPlayingFrom(base::TimeDelta time) override;
+
+  // N.B: MediaPlayerBridge doesn't support variable playback rates (but it
+  // could be exposed from MediaPlayer in the future). For the moment:
+  // - If |playback_rate| is 0, we pause the video.
+  // - For other |playback_rate| values, we start playing at 1x speed.
+  void SetPlaybackRate(double playback_rate) override;
+  void SetVolume(float volume) override;
+  base::TimeDelta GetMediaTime() override;
+  bool HasAudio() override;
+  bool HasVideo() override;
+
+  // media::MediaPlayerManager implementation
+  media::MediaResourceGetter* GetMediaResourceGetter() override;
+  media::MediaUrlInterceptor* GetMediaUrlInterceptor() override;
+  void OnTimeUpdate(int player_id,
+                    base::TimeDelta current_timestamp,
+                    base::TimeTicks current_time_ticks) override;
+  void OnMediaMetadataChanged(int player_id,
+                              base::TimeDelta duration,
+                              int width,
+                              int height,
+                              bool success) override;
+  void OnPlaybackComplete(int player_id) override;
+  void OnMediaInterrupted(int player_id) override;
+  void OnBufferingUpdate(int player_id, int percentage) override;
+  void OnSeekComplete(int player_id,
+                      const base::TimeDelta& current_time) override;
+  void OnError(int player_id, int error) override;
+  void OnVideoSizeChanged(int player_id, int width, int height) override;
+  void OnWaitingForDecryptionKey(int player_id) override;
+  media::MediaPlayerAndroid* GetFullscreenPlayer() override;
+  media::MediaPlayerAndroid* GetPlayer(int player_id) override;
+  bool RequestPlay(int player_id,
+                   base::TimeDelta duration,
+                   bool has_audio) override;
+
+ private:
+  // Used when creating |media_player_|.
+  void OnDecoderResourcesReleased(int player_id);
+
+  RenderFrameHost* render_frame_host_;
+  media::RendererClient* renderer_client_;
+
+  std::unique_ptr<media::MediaPlayerBridge> media_player_;
+
+  // Current duration of the media.
+  base::TimeDelta duration_;
+
+  // Indicates if a serious error has been encountered by the |media_player_|.
+  bool has_error_;
+
+  gfx::Size video_size_;
+
+  std::unique_ptr<media::MediaResourceGetter> media_resource_getter_;
+
+  // NOTE: Weak pointers must be invalidated before all other member variables.
+  base::WeakPtrFactory<MediaPlayerRenderer> weak_factory_;
+
+  DISALLOW_COPY_AND_ASSIGN(MediaPlayerRenderer);
+};
+
+}  // namespace content
+
+#endif  // CONTENT_BROWSER_MEDIA_ANDROID_MEDIA_PLAYER_RENDERER_H_