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/AudioManager.h> 21 #include <audiomanager/IAudioManager.h> 22 #include <utils/Mutex.h> 23 24 #include "android/media/BnPlayer.h" 25 26 namespace android { 27 28 class PlayerBase : public ::android::media::BnPlayer 29 { 30 public: 31 explicit PlayerBase(); 32 virtual ~PlayerBase() override; 33 34 virtual void destroy() = 0; 35 36 //IPlayer implementation 37 virtual binder::Status start() override; 38 virtual binder::Status pause() override; 39 virtual binder::Status stop() override; 40 virtual binder::Status setVolume(float vol) override; 41 virtual binder::Status setPan(float pan) override; 42 virtual binder::Status setStartDelayMs(int32_t delayMs) override; 43 virtual binder::Status applyVolumeShaper( 44 const media::VolumeShaperConfiguration& configuration, 45 const media::VolumeShaperOperation& operation) override; 46 47 status_t startWithStatus(audio_port_handle_t deviceId); 48 status_t pauseWithStatus(); 49 status_t stopWithStatus(); 50 51 //FIXME temporary method while some player state is outside of this class 52 void reportEvent(player_state_t event, audio_port_handle_t deviceId); 53 54 void baseUpdateDeviceId(audio_port_handle_t deviceId); 55 56 protected: 57 58 void init(player_type_t playerType, audio_usage_t usage, audio_session_t sessionId); 59 void baseDestroy(); 60 61 //IPlayer methods handlers for derived classes playerStart()62 virtual status_t playerStart() { return NO_ERROR; } playerPause()63 virtual status_t playerPause() { return NO_ERROR; } playerStop()64 virtual status_t playerStop() { return NO_ERROR; } playerSetVolume()65 virtual status_t playerSetVolume() { return NO_ERROR; } 66 67 // mutex for IPlayer volume and pan, and player-specific volume 68 Mutex mSettingsLock; 69 70 // volume multipliers coming from the IPlayer volume and pan controls 71 float mPanMultiplierL, mPanMultiplierR; 72 float mVolumeMultiplierL, mVolumeMultiplierR; 73 74 // player interface ID, uniquely identifies the player in the system 75 // effectively const after PlayerBase::init(). 76 audio_unique_id_t mPIId; 77 78 private: 79 // report events to AudioService 80 void servicePlayerEvent(player_state_t event, audio_port_handle_t deviceId); 81 void serviceReleasePlayer(); 82 83 // native interface to AudioService 84 android::sp<android::IAudioManager> mAudioManager; 85 86 // Mutex for state reporting 87 Mutex mPlayerStateLock; 88 player_state_t mLastReportedEvent; 89 90 Mutex mDeviceIdLock; 91 audio_port_handle_t mLastReportedDeviceId; 92 }; 93 94 } // namespace android 95 96 #endif /* __ANDROID_PLAYER_BASE_H__ */ 97