1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
5 #ifndef MEDIA_BASE_ANDROID_MEDIA_PLAYER_BRIDGE_H_
6 #define MEDIA_BASE_ANDROID_MEDIA_PLAYER_BRIDGE_H_
12 #include "base/android/scoped_java_ref.h"
13 #include "base/callback.h"
14 #include "base/memory/scoped_ptr.h"
15 #include "base/memory/weak_ptr.h"
16 #include "base/time/time.h"
17 #include "base/timer/timer.h"
18 #include "media/base/android/media_player_android.h"
19 #include "media/base/android/media_player_listener.h"
24 class MediaPlayerManager;
26 // This class serves as a bridge between the native code and Android MediaPlayer
27 // Java class. For more information on Android MediaPlayer, check
28 // http://developer.android.com/reference/android/media/MediaPlayer.html
29 // The actual Android MediaPlayer instance is created lazily when Start(),
30 // Pause(), SeekTo() gets called. As a result, media information may not
31 // be available until one of those operations is performed. After that, we
32 // will cache those information in case the mediaplayer gets released.
33 // The class uses the corresponding MediaPlayerBridge Java class to talk to
34 // the Android MediaPlayer instance.
35 class MEDIA_EXPORT MediaPlayerBridge : public MediaPlayerAndroid {
37 static bool RegisterMediaPlayerBridge(JNIEnv* env);
39 // Construct a MediaPlayerBridge object. This object needs to call |manager|'s
40 // RequestMediaResources() before decoding the media stream. This allows
41 // |manager| to track unused resources and free them when needed. On the other
42 // hand, it needs to call ReleaseMediaResources() when it is done with
43 // decoding. MediaPlayerBridge also forwards Android MediaPlayer callbacks to
44 // the |manager| when needed.
45 MediaPlayerBridge(int player_id,
47 const GURL& first_party_for_cookies,
48 const std::string& user_agent,
50 MediaPlayerManager* manager,
51 const RequestMediaResourcesCB& request_media_resources_cb,
52 const ReleaseMediaResourcesCB& release_media_resources_cb,
53 const GURL& frame_url);
54 virtual ~MediaPlayerBridge();
56 // Initialize this object and extract the metadata from the media.
57 virtual void Initialize();
59 // MediaPlayerAndroid implementation.
60 virtual void SetVideoSurface(gfx::ScopedJavaSurface surface) OVERRIDE;
61 virtual void Start() OVERRIDE;
62 virtual void Pause(bool is_media_related_action ALLOW_UNUSED) OVERRIDE;
63 virtual void SeekTo(base::TimeDelta timestamp) OVERRIDE;
64 virtual void Release() OVERRIDE;
65 virtual void SetVolume(double volume) OVERRIDE;
66 virtual int GetVideoWidth() OVERRIDE;
67 virtual int GetVideoHeight() OVERRIDE;
68 virtual base::TimeDelta GetCurrentTime() OVERRIDE;
69 virtual base::TimeDelta GetDuration() OVERRIDE;
70 virtual bool IsPlaying() OVERRIDE;
71 virtual bool CanPause() OVERRIDE;
72 virtual bool CanSeekForward() OVERRIDE;
73 virtual bool CanSeekBackward() OVERRIDE;
74 virtual bool IsPlayerReady() OVERRIDE;
75 virtual GURL GetUrl() OVERRIDE;
76 virtual GURL GetFirstPartyForCookies() OVERRIDE;
77 virtual bool IsSurfaceInUse() const OVERRIDE;
79 // MediaPlayerListener callbacks.
80 void OnVideoSizeChanged(int width, int height);
81 void OnMediaError(int error_type);
82 void OnBufferingUpdate(int percent);
83 void OnPlaybackComplete();
84 void OnMediaInterrupted();
85 void OnSeekComplete();
86 void OnDidSetDataUriDataSource(JNIEnv* env, jobject obj, jboolean success);
89 void SetJavaMediaPlayerBridge(jobject j_media_player_bridge);
90 base::android::ScopedJavaLocalRef<jobject> GetJavaMediaPlayerBridge();
91 void SetMediaPlayerListener();
92 void SetDuration(base::TimeDelta time);
94 virtual void PendingSeekInternal(const base::TimeDelta& time);
96 // Prepare the player for playback, asynchronously. When succeeds,
97 // OnMediaPrepared() will be called. Otherwise, OnMediaError() will
98 // be called with an error type.
99 virtual void Prepare();
100 void OnMediaPrepared();
102 // Create the corresponding Java class instance.
103 virtual void CreateJavaMediaPlayerBridge();
105 // Get allowed operations from the player.
106 virtual base::android::ScopedJavaLocalRef<jobject> GetAllowedOperations();
109 friend class MediaPlayerListener;
111 // Set the data source for the media player.
112 void SetDataSource(const std::string& url);
114 // Functions that implements media player control.
115 void StartInternal();
116 void PauseInternal();
117 void SeekInternal(base::TimeDelta time);
119 // Called when |time_update_timer_| fires.
120 void OnTimeUpdateTimerFired();
122 // Update allowed operations from the player.
123 void UpdateAllowedOperations();
125 // Callback function passed to |resource_getter_|. Called when the cookies
127 void OnCookiesRetrieved(const std::string& cookies);
129 // Extract the media metadata from a url, asynchronously.
130 // OnMediaMetadataExtracted() will be called when this call finishes.
131 void ExtractMediaMetadata(const std::string& url);
132 void OnMediaMetadataExtracted(base::TimeDelta duration, int width, int height,
135 // Whether the player is prepared for playback.
138 // Pending play event while player is preparing.
141 // Pending seek time while player is preparing.
142 base::TimeDelta pending_seek_;
147 // First party url for cookies.
148 GURL first_party_for_cookies_;
150 // User agent string to be used for media player.
151 const std::string user_agent_;
153 // Hide url log from media player.
156 // Stats about the media.
157 base::TimeDelta duration_;
161 // Meta data about actions can be taken.
163 bool can_seek_forward_;
164 bool can_seek_backward_;
166 // Cookies for |url_|.
167 std::string cookies_;
169 // Java MediaPlayerBridge instance.
170 base::android::ScopedJavaGlobalRef<jobject> j_media_player_bridge_;
172 base::RepeatingTimer<MediaPlayerBridge> time_update_timer_;
174 // Listener object that listens to all the media player events.
175 scoped_ptr<MediaPlayerListener> listener_;
177 // Whether player is currently using a surface.
178 bool is_surface_in_use_;
180 // Volume of playback.
183 // Weak pointer passed to |listener_| for callbacks.
184 // NOTE: Weak pointers must be invalidated before all other member variables.
185 base::WeakPtrFactory<MediaPlayerBridge> weak_factory_;
187 DISALLOW_COPY_AND_ASSIGN(MediaPlayerBridge);
192 #endif // MEDIA_BASE_ANDROID_MEDIA_PLAYER_BRIDGE_H_