android_GenericMediaPlayer.h revision 4b0e0b2860ffd5e246b42c8a434833cca2f068b3 
1/*
2 * Copyright (C) 2011 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#ifndef __ANDROID_GENERICMEDIAPLAYER_H__
18#define __ANDROID_GENERICMEDIAPLAYER_H__
19
20#include "android_GenericMediaPlayer.h"
21
22#include <binder/IServiceManager.h>
23#include <surfaceflinger/Surface.h>
24#include <gui/ISurfaceTexture.h>
25
26
27//--------------------------------------------------------------------------------------------------
28namespace android {
29
30class GenericMediaPlayer;
31class MediaPlayerNotificationClient : public BnMediaPlayerClient
32{
33public:
34    MediaPlayerNotificationClient(GenericMediaPlayer* gmp);
35    virtual ~MediaPlayerNotificationClient();
36
37    // IMediaPlayerClient implementation
38    virtual void notify(int msg, int ext1, int ext2, const Parcel *obj);
39
40    void blockUntilPlayerPrepared();
41
42private:
43    Mutex mLock;
44    GenericMediaPlayer* mGenericMediaPlayer;
45    Condition mPlayerPreparedCondition;
46    bool mPlayerPrepared;
47};
48
49
50//--------------------------------------------------------------------------------------------------
51class GenericMediaPlayer : public GenericPlayer
52{
53public:
54
55    GenericMediaPlayer(const AudioPlayback_Parameters* params, bool hasVideo);
56    virtual ~GenericMediaPlayer();
57
58    virtual void preDestroy();
59
60    // overridden from GenericPlayer
61    virtual void getPositionMsec(int* msec); // ANDROID_UNKNOWN_TIME if unknown
62
63    virtual void setVideoSurface(const sp<Surface> &surface);
64    virtual void setVideoSurfaceTexture(const sp<ISurfaceTexture> &surfaceTexture);
65
66protected:
67    friend class MediaPlayerNotificationClient;
68
69    // overridden from GenericPlayer
70    virtual void onMessageReceived(const sp<AMessage> &msg);
71
72    // Async event handlers (called from GenericPlayer's event loop)
73    virtual void onPrepare();
74    virtual void onPlay();
75    virtual void onPause();
76    virtual void onSeek(const sp<AMessage> &msg);
77    virtual void onLoop(const sp<AMessage> &msg);
78    virtual void onVolumeUpdate();
79    virtual void onBufferingUpdate(const sp<AMessage> &msg);
80    virtual void onGetMediaPlayerInfo();
81
82    bool mHasVideo;
83    int32_t mSeekTimeMsec;
84
85    sp<Surface> mVideoSurface;
86    sp<ISurfaceTexture> mVideoSurfaceTexture;
87
88    sp<IMediaPlayer> mPlayer;
89    // Receives Android MediaPlayer events from mPlayer
90    sp<MediaPlayerNotificationClient> mPlayerClient;
91
92    sp<IServiceManager> mServiceManager;
93    sp<IBinder> mBinder;
94    sp<IMediaPlayerService> mMediaPlayerService;
95
96    Parcel metadatafilter;
97
98    // for synchronous "getXXX" calls on misc MediaPlayer settings: currently querying:
99    //   - position (time): protects GenericPlayer::mPositionMsec
100    Mutex       mGetMediaPlayerInfoLock;
101    Condition   mGetMediaPlayerInfoCondition;
102    //  marks the current "generation" of MediaPlayer info,any change denotes more recent info,
103    //    protected by mGetMediaPlayerInfoLock
104    uint32_t    mGetMediaPlayerInfoGenCount;
105
106private:
107    DISALLOW_EVIL_CONSTRUCTORS(GenericMediaPlayer);
108    void onAfterMediaPlayerPrepared();
109};
110
111} // namespace android
112
113#endif /* __ANDROID_GENERICMEDIAPLAYER_H__ */
114