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 "AudioSessionInfoProvider.h" 26 27 namespace android { 28 29 class AudioPolicyClientInterface; 30 31 class AudioSession : public RefBase, public AudioSessionInfoUpdateListener 32 { 33 public: 34 AudioSession(audio_session_t session, 35 audio_source_t inputSource, 36 audio_format_t format, 37 uint32_t sampleRate, 38 audio_channel_mask_t channelMask, 39 audio_input_flags_t flags, 40 uid_t uid, 41 bool isSoundTrigger, 42 AudioMix* policyMix, 43 AudioPolicyClientInterface *clientInterface); 44 45 status_t dump(int fd, int spaces, int index) const; 46 session()47 audio_session_t session() const { return mSession; } inputSource()48 audio_source_t inputSource()const { return mInputSource; } format()49 audio_format_t format() const { return mConfig.format; } sampleRate()50 uint32_t sampleRate() const { return mConfig.sample_rate; } channelMask()51 audio_channel_mask_t channelMask() const { return mConfig.channel_mask; } flags()52 audio_input_flags_t flags() const { return mFlags; } uid()53 uid_t uid() const { return mUid; } 54 bool matches(const sp<AudioSession> &other) const; isSoundTrigger()55 bool isSoundTrigger() const { return mIsSoundTrigger; } openCount()56 uint32_t openCount() const { return mOpenCount; } ; activeCount()57 uint32_t activeCount() const { return mActiveCount; } ; 58 59 uint32_t changeOpenCount(int delta); 60 uint32_t changeActiveCount(int delta); 61 62 void setInfoProvider(AudioSessionInfoProvider *provider); 63 // implementation of AudioSessionInfoUpdateListener 64 virtual void onSessionInfoUpdate() const; 65 66 private: 67 const audio_session_t mSession; 68 const audio_source_t mInputSource; 69 const struct audio_config_base mConfig; 70 const audio_input_flags_t mFlags; 71 const uid_t mUid; 72 bool mIsSoundTrigger; 73 uint32_t mOpenCount; 74 uint32_t mActiveCount; 75 AudioMix* mPolicyMix; // non NULL when used by a dynamic policy 76 AudioPolicyClientInterface* mClientInterface; 77 const AudioSessionInfoProvider* mInfoProvider; 78 }; 79 80 class AudioSessionCollection : 81 public DefaultKeyedVector<audio_session_t, sp<AudioSession> >, 82 public AudioSessionInfoUpdateListener 83 { 84 public: 85 status_t addSession(audio_session_t session, 86 const sp<AudioSession>& audioSession, 87 AudioSessionInfoProvider *provider); 88 89 status_t removeSession(audio_session_t session); 90 91 uint32_t getOpenCount() const; 92 93 AudioSessionCollection getActiveSessions() const; 94 bool hasActiveSession() const; 95 bool isSourceActive(audio_source_t source) const; 96 97 // implementation of AudioSessionInfoUpdateListener 98 virtual void onSessionInfoUpdate() const; 99 100 status_t dump(int fd, int spaces) const; 101 }; 102 103 }; // namespace android 104