1 /* 2 * Copyright (C) 2017 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_PLAYER_BASE_H__ 18 #define __ANDROID_PLAYER_BASE_H__ 19 20 #include <audiomanager/IPlayer.h> 21 #include <audiomanager/AudioManager.h> 22 #include <audiomanager/IAudioManager.h> 23 24 25 namespace android { 26 27 class PlayerBase : public BnPlayer 28 { 29 public: 30 explicit PlayerBase(); 31 virtual ~PlayerBase(); 32 33 virtual void destroy() = 0; 34 35 //IPlayer implementation 36 virtual void start(); 37 virtual void pause(); 38 virtual void stop(); 39 virtual void setVolume(float vol); 40 virtual void setPan(float pan); 41 virtual void setStartDelayMs(int32_t delayMs); 42 virtual void applyVolumeShaper( 43 const sp<VolumeShaper::Configuration>& configuration, 44 const sp<VolumeShaper::Operation>& operation) override; 45 46 virtual status_t onTransact( 47 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags); 48 49 50 status_t startWithStatus(); 51 status_t pauseWithStatus(); 52 status_t stopWithStatus(); 53 54 //FIXME temporary method while some player state is outside of this class 55 void reportEvent(player_state_t event); 56 57 protected: 58 59 void init(player_type_t playerType, audio_usage_t usage); 60 void baseDestroy(); 61 62 //IPlayer methods handlers for derived classes playerStart()63 virtual status_t playerStart() { return NO_ERROR; } playerPause()64 virtual status_t playerPause() { return NO_ERROR; } playerStop()65 virtual status_t playerStop() { return NO_ERROR; } playerSetVolume()66 virtual status_t playerSetVolume() { return NO_ERROR; } 67 68 // mutex for IPlayer volume and pan, and player-specific volume 69 Mutex mSettingsLock; 70 71 // volume multipliers coming from the IPlayer volume and pan controls 72 float mPanMultiplierL, mPanMultiplierR; 73 float mVolumeMultiplierL, mVolumeMultiplierR; 74 75 private: 76 // report events to AudioService 77 void servicePlayerEvent(player_state_t event); 78 void serviceReleasePlayer(); 79 80 // native interface to AudioService 81 android::sp<android::IAudioManager> mAudioManager; 82 83 // player interface ID, uniquely identifies the player in the system 84 audio_unique_id_t mPIId; 85 86 // Mutex for state reporting 87 Mutex mPlayerStateLock; 88 player_state_t mLastReportedEvent; 89 }; 90 91 } // namespace android 92 93 #endif /* __ANDROID_PLAYER_BASE_H__ */ 94