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_GenericPlayer.h" 21 22 #include <binder/IServiceManager.h> 23 #include <surfaceflinger/Surface.h> 24 #include <gui/ISurfaceTexture.h> 25 26 27 //-------------------------------------------------------------------------------------------------- 28 namespace android { 29 30 class GenericMediaPlayer; 31 class MediaPlayerNotificationClient : public BnMediaPlayerClient 32 { 33 public: 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 // Call before enqueuing a prepare event 41 void beforePrepare(); 42 43 // Call after enqueueing the prepare event; returns true if the prepare 44 // completed successfully, or false if it completed unsuccessfully 45 bool blockUntilPlayerPrepared(); 46 47 private: 48 const wp<GenericMediaPlayer> mGenericMediaPlayer; 49 Mutex mLock; // protects mPlayerPrepared 50 Condition mPlayerPreparedCondition; // signalled when mPlayerPrepared is changed 51 enum { 52 PREPARE_NOT_STARTED, 53 PREPARE_IN_PROGRESS, 54 PREPARE_COMPLETED_SUCCESSFULLY, 55 PREPARE_COMPLETED_UNSUCCESSFULLY 56 } mPlayerPrepared; 57 }; 58 59 60 //-------------------------------------------------------------------------------------------------- 61 class GenericMediaPlayer : public GenericPlayer 62 { 63 public: 64 65 GenericMediaPlayer(const AudioPlayback_Parameters* params, bool hasVideo); 66 virtual ~GenericMediaPlayer(); 67 68 virtual void preDestroy(); 69 70 // overridden from GenericPlayer 71 virtual void getPositionMsec(int* msec); // ANDROID_UNKNOWN_TIME if unknown 72 73 virtual void setVideoSurface(const sp<Surface> &surface); 74 virtual void setVideoSurfaceTexture(const sp<ISurfaceTexture> &surfaceTexture); 75 76 protected: 77 friend class MediaPlayerNotificationClient; 78 79 // Async event handlers (called from GenericPlayer's event loop) 80 virtual void onPrepare(); 81 virtual void onPlay(); 82 virtual void onPause(); 83 virtual void onSeek(const sp<AMessage> &msg); 84 virtual void onLoop(const sp<AMessage> &msg); 85 virtual void onSeekComplete(); 86 virtual void onVolumeUpdate(); 87 virtual void onBufferingUpdate(const sp<AMessage> &msg); 88 virtual void onAttachAuxEffect(const sp<AMessage> &msg); 89 virtual void onSetAuxEffectSendLevel(const sp<AMessage> &msg); 90 91 const bool mHasVideo; // const allows MediaPlayerNotificationClient::notify to safely access 92 int32_t mSeekTimeMsec; 93 94 // at most one of mVideoSurface and mVideoSurfaceTexture is non-NULL 95 sp<Surface> mVideoSurface; 96 sp<ISurfaceTexture> mVideoSurfaceTexture; 97 98 // only safe to access from within Realize and looper 99 sp<IMediaPlayer> mPlayer; 100 // Receives Android MediaPlayer events from mPlayer 101 const sp<MediaPlayerNotificationClient> mPlayerClient; 102 103 // Return a reference to the media player service, or LOGE and return NULL after retries fail getMediaPlayerService()104 static const sp<IMediaPlayerService> getMediaPlayerService() { 105 return IMediaDeathNotifier::getMediaPlayerService(); 106 } 107 108 private: 109 DISALLOW_EVIL_CONSTRUCTORS(GenericMediaPlayer); 110 void afterMediaPlayerPreparedSuccessfully(); 111 112 protected: // FIXME temporary 113 Mutex mPreparedPlayerLock; // protects mPreparedPlayer 114 sp<IMediaPlayer> mPreparedPlayer; // non-NULL if MediaPlayer exists and prepared, write once 115 private: 116 void getPreparedPlayer(sp<IMediaPlayer> &preparedPlayer); // safely read mPreparedPlayer 117 118 }; 119 120 } // namespace android 121 122 // is the specified URI a known distant protocol? 123 bool isDistantProtocol(const char *uri); 124 125 #endif /* __ANDROID_GENERICMEDIAPLAYER_H__ */ 126