1 /* 2 * Copyright (C) 2015 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 #pragma once 18 19 #include <system/audio.h> 20 #include <utils/Errors.h> 21 #include <utils/RefBase.h> 22 #include <utils/Errors.h> 23 #include <utils/KeyedVector.h> 24 #include <media/AudioPolicy.h> 25 #include <media/IAudioPolicyServiceClient.h> 26 #include "AudioSessionInfoProvider.h" 27 28 namespace android { 29 30 class AudioPolicyClientInterface; 31 32 class AudioSession : public RefBase, public AudioSessionInfoUpdateListener 33 { 34 public: 35 AudioSession(audio_session_t session, 36 audio_source_t inputSource, 37 audio_format_t format, 38 uint32_t sampleRate, 39 audio_channel_mask_t channelMask, 40 audio_input_flags_t flags, 41 uid_t uid, 42 bool isSoundTrigger, 43 AudioMix* policyMix, 44 AudioPolicyClientInterface *clientInterface); 45 46 status_t dump(int fd, int spaces, int index) const; 47 session()48 audio_session_t session() const { return mRecordClientInfo.session; } inputSource()49 audio_source_t inputSource()const { return mRecordClientInfo.source; } format()50 audio_format_t format() const { return mConfig.format; } sampleRate()51 uint32_t sampleRate() const { return mConfig.sample_rate; } channelMask()52 audio_channel_mask_t channelMask() const { return mConfig.channel_mask; } flags()53 audio_input_flags_t flags() const { return mFlags; } uid()54 uid_t uid() const { return mRecordClientInfo.uid; } setUid(uid_t uid)55 void setUid(uid_t uid) { mRecordClientInfo.uid = uid; } 56 bool matches(const sp<AudioSession> &other) const; isSoundTrigger()57 bool isSoundTrigger() const { return mIsSoundTrigger; } setSilenced(bool silenced)58 void setSilenced(bool silenced) { mSilenced = silenced; } isSilenced()59 bool isSilenced() const { return mSilenced; } openCount()60 uint32_t openCount() const { return mOpenCount; } ; activeCount()61 uint32_t activeCount() const { return mActiveCount; } ; 62 63 uint32_t changeOpenCount(int delta); 64 uint32_t changeActiveCount(int delta); 65 66 void setInfoProvider(AudioSessionInfoProvider *provider); 67 // implementation of AudioSessionInfoUpdateListener 68 virtual void onSessionInfoUpdate() const; 69 70 private: 71 record_client_info_t mRecordClientInfo; 72 const struct audio_config_base mConfig; 73 const audio_input_flags_t mFlags; 74 bool mIsSoundTrigger; 75 bool mSilenced; 76 uint32_t mOpenCount; 77 uint32_t mActiveCount; 78 AudioMix* mPolicyMix; // non NULL when used by a dynamic policy 79 AudioPolicyClientInterface* mClientInterface; 80 const AudioSessionInfoProvider* mInfoProvider; 81 }; 82 83 class AudioSessionCollection : 84 public DefaultKeyedVector<audio_session_t, sp<AudioSession> >, 85 public AudioSessionInfoUpdateListener 86 { 87 public: 88 status_t addSession(audio_session_t session, 89 const sp<AudioSession>& audioSession, 90 AudioSessionInfoProvider *provider); 91 92 status_t removeSession(audio_session_t session); 93 94 uint32_t getOpenCount() const; 95 96 AudioSessionCollection getActiveSessions() const; 97 size_t getActiveSessionCount() const; 98 bool hasActiveSession() const; 99 bool isSourceActive(audio_source_t source) const; 100 audio_source_t getHighestPrioritySource(bool activeOnly) const; 101 102 // implementation of AudioSessionInfoUpdateListener 103 virtual void onSessionInfoUpdate() const; 104 105 status_t dump(int fd, int spaces) const; 106 }; 107 108 } // namespace android 109