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/SortedVector.h> 22 #include <utils/KeyedVector.h> 23 #include "AudioIODescriptorInterface.h" 24 #include "AudioPort.h" 25 #include "ClientDescriptor.h" 26 #include "DeviceDescriptor.h" 27 #include "EffectDescriptor.h" 28 #include "IOProfile.h" 29 30 namespace android { 31 32 class AudioPolicyMix; 33 class AudioPolicyClientInterface; 34 35 // descriptor for audio inputs. Used to maintain current configuration of each opened audio input 36 // and keep track of the usage of this input. 37 class AudioInputDescriptor: public AudioPortConfig, public AudioIODescriptorInterface 38 , public ClientMapHandler<RecordClientDescriptor> 39 { 40 public: 41 explicit AudioInputDescriptor(const sp<IOProfile>& profile, 42 AudioPolicyClientInterface *clientInterface); 43 audio_port_handle_t getId() const; 44 audio_module_handle_t getModuleHandle() const; 45 46 audio_devices_t getDeviceType() const { return (mDevice != nullptr) ? 47 mDevice->type() : AUDIO_DEVICE_NONE; } 48 sp<DeviceDescriptor> getDevice() const { return mDevice; } 49 void setDevice(const sp<DeviceDescriptor> &device) { mDevice = device; } 50 DeviceVector supportedDevices() const { 51 return mProfile != nullptr ? mProfile->getSupportedDevices() : DeviceVector(); } 52 53 void dump(String8 *dst) const override; 54 55 audio_io_handle_t mIoHandle = AUDIO_IO_HANDLE_NONE; // input handle 56 wp<AudioPolicyMix> mPolicyMix; // non NULL when used by a dynamic policy 57 const sp<IOProfile> mProfile; // I/O profile this output derives from 58 59 virtual void toAudioPortConfig(struct audio_port_config *dstConfig, 60 const struct audio_port_config *srcConfig = NULL) const; 61 virtual sp<AudioPort> getAudioPort() const { return mProfile; } 62 void toAudioPort(struct audio_port *port) const; 63 void setPreemptedSessions(const SortedVector<audio_session_t>& sessions); 64 SortedVector<audio_session_t> getPreemptedSessions() const; 65 bool hasPreemptedSession(audio_session_t session) const; 66 void clearPreemptedSessions(); 67 bool isActive() const { return mGlobalActiveCount > 0; } 68 bool isSourceActive(audio_source_t source) const; 69 audio_source_t source() const; 70 bool isSoundTrigger() const; 71 sp<RecordClientDescriptor> getHighestPriorityClient() const; 72 audio_attributes_t getHighestPriorityAttributes() const; 73 void setClientActive(const sp<RecordClientDescriptor>& client, bool active); 74 int32_t activeCount() { return mGlobalActiveCount; } 75 void trackEffectEnabled(const sp<EffectDescriptor> &effect, bool enabled); 76 EffectDescriptorCollection getEnabledEffects() const; 77 EffectDescriptorCollection getActiveEffects() const; // enabled and not suspended 78 // implementation of AudioIODescriptorInterface 79 audio_config_base_t getConfig() const override; 80 audio_patch_handle_t getPatchHandle() const override; 81 void setPatchHandle(audio_patch_handle_t handle) override; 82 83 status_t open(const audio_config_t *config, 84 const sp<DeviceDescriptor> &device, 85 audio_source_t source, 86 audio_input_flags_t flags, 87 audio_io_handle_t *input); 88 // Called when a stream is about to be started. 89 // Note: called after setClientActive(client, true) 90 status_t start(); 91 // Called after a stream is stopped 92 // Note: called after setClientActive(client, false) 93 void stop(); 94 void close(); 95 96 RecordClientVector getClientsForSession(audio_session_t session); 97 RecordClientVector clientsList(bool activeOnly = false, 98 audio_source_t source = AUDIO_SOURCE_DEFAULT, bool preferredDeviceOnly = false) const; 99 100 void setAppState(uid_t uid, app_state_t state); 101 102 // implementation of ClientMapHandler<RecordClientDescriptor> 103 void addClient(const sp<RecordClientDescriptor> &client) override; 104 105 // Go over all active clients and suspend or restore effects according highest priority 106 // active use case 107 void checkSuspendEffects(); 108 109 private: 110 111 void updateClientRecordingConfiguration(int event, const sp<RecordClientDescriptor>& client); 112 113 audio_patch_handle_t mPatchHandle = AUDIO_PATCH_HANDLE_NONE; 114 audio_port_handle_t mId = AUDIO_PORT_HANDLE_NONE; 115 sp<DeviceDescriptor> mDevice = nullptr; /**< current device this input is routed to */ 116 117 // Because a preemptible capture session can preempt another one, we end up in an endless loop 118 // situation were each session is allowed to restart after being preempted, 119 // thus preempting the other one which restarts and so on. 120 // To avoid this situation, we store which audio session was preempted when 121 // a particular input started and prevent preemption of this active input by this session. 122 // We also inherit sessions from the preempted input to avoid a 3 way preemption loop etc... 123 SortedVector<audio_session_t> mPreemptedSessions; 124 AudioPolicyClientInterface * const mClientInterface; 125 int32_t mGlobalActiveCount = 0; // non-client-specific activity ref count 126 EffectDescriptorCollection mEnabledEffects; 127 }; 128 129 class AudioInputCollection : 130 public DefaultKeyedVector< audio_io_handle_t, sp<AudioInputDescriptor> > 131 { 132 public: 133 bool isSourceActive(audio_source_t source) const; 134 135 sp<AudioInputDescriptor> getInputFromId(audio_port_handle_t id) const; 136 137 // count active capture sessions using one of the specified devices. 138 // ignore devices if empty vector is passed 139 uint32_t activeInputsCountOnDevices(const DeviceVector &devices) const; 140 141 /** 142 * return io handle of active input or 0 if no input is active 143 * Only considers inputs from physical devices (e.g. main mic, headset mic) when 144 * ignoreVirtualInputs is true. 145 */ 146 Vector<sp <AudioInputDescriptor> > getActiveInputs(); 147 148 sp<AudioInputDescriptor> getInputForClient(audio_port_handle_t portId); 149 150 void trackEffectEnabled(const sp<EffectDescriptor> &effect, bool enabled); 151 152 /** 153 * @brief clearSessionRoutesForDevice: when a device is disconnected, and if this device has 154 * been chosen as the preferred device by any client, the policy manager shall 155 * prevent from using this device any more by clearing all the session routes involving this 156 * device. 157 * In other words, the preferred device port id of these clients will be resetted to NONE. 158 * @param disconnectedDevice device to be disconnected 159 */ 160 void clearSessionRoutesForDevice(const sp<DeviceDescriptor> &disconnectedDevice); 161 162 void dump(String8 *dst) const; 163 }; 164 165 166 } // namespace android 167
