| /* |
| * Copyright (C) 2015 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #pragma once |
| |
| #include "AudioPort.h" |
| #include "AudioSession.h" |
| #include "AudioSessionInfoProvider.h" |
| #include <utils/Errors.h> |
| #include <system/audio.h> |
| #include <utils/SortedVector.h> |
| #include <utils/KeyedVector.h> |
| |
| namespace android { |
| |
| class IOProfile; |
| class AudioPolicyMix; |
| |
| // descriptor for audio inputs. Used to maintain current configuration of each opened audio input |
| // and keep track of the usage of this input. |
| class AudioInputDescriptor: public AudioPortConfig, public AudioSessionInfoProvider |
| { |
| public: |
| explicit AudioInputDescriptor(const sp<IOProfile>& profile, |
| AudioPolicyClientInterface *clientInterface); |
| audio_port_handle_t getId() const; |
| audio_module_handle_t getModuleHandle() const; |
| uint32_t getOpenRefCount() const; |
| |
| status_t dump(int fd); |
| |
| audio_io_handle_t mIoHandle; // input handle |
| audio_devices_t mDevice; // current device this input is routed to |
| wp<AudioPolicyMix> mPolicyMix; // non NULL when used by a dynamic policy |
| const sp<IOProfile> mProfile; // I/O profile this output derives from |
| |
| virtual void toAudioPortConfig(struct audio_port_config *dstConfig, |
| const struct audio_port_config *srcConfig = NULL) const; |
| virtual sp<AudioPort> getAudioPort() const { return mProfile; } |
| void toAudioPort(struct audio_port *port) const; |
| void setPreemptedSessions(const SortedVector<audio_session_t>& sessions); |
| SortedVector<audio_session_t> getPreemptedSessions() const; |
| bool hasPreemptedSession(audio_session_t session) const; |
| void clearPreemptedSessions(); |
| bool isActive() const; |
| bool isSourceActive(audio_source_t source) const; |
| audio_source_t inputSource(bool activeOnly = false) const; |
| bool isSoundTrigger() const; |
| status_t addAudioSession(audio_session_t session, |
| const sp<AudioSession>& audioSession); |
| status_t removeAudioSession(audio_session_t session); |
| sp<AudioSession> getAudioSession(audio_session_t session) const; |
| AudioSessionCollection getAudioSessions(bool activeOnly) const; |
| size_t getAudioSessionCount(bool activeOnly) const; |
| audio_source_t getHighestPrioritySource(bool activeOnly) const; |
| |
| // implementation of AudioSessionInfoProvider |
| virtual audio_config_base_t getConfig() const; |
| virtual audio_patch_handle_t getPatchHandle() const; |
| |
| void setPatchHandle(audio_patch_handle_t handle); |
| |
| status_t open(const audio_config_t *config, |
| audio_devices_t device, |
| const String8& address, |
| audio_source_t source, |
| audio_input_flags_t flags, |
| audio_io_handle_t *input); |
| // Called when a stream is about to be started. |
| // Note: called after AudioSession::changeActiveCount(1) |
| status_t start(); |
| // Called after a stream is stopped |
| // Note: called after AudioSession::changeActiveCount(-1) |
| void stop(); |
| void close(); |
| |
| private: |
| audio_patch_handle_t mPatchHandle; |
| audio_port_handle_t mId; |
| // audio sessions attached to this input |
| AudioSessionCollection mSessions; |
| // Because a preemptible capture session can preempt another one, we end up in an endless loop |
| // situation were each session is allowed to restart after being preempted, |
| // thus preempting the other one which restarts and so on. |
| // To avoid this situation, we store which audio session was preempted when |
| // a particular input started and prevent preemption of this active input by this session. |
| // We also inherit sessions from the preempted input to avoid a 3 way preemption loop etc... |
| SortedVector<audio_session_t> mPreemptedSessions; |
| AudioPolicyClientInterface *mClientInterface; |
| }; |
| |
| class AudioInputCollection : |
| public DefaultKeyedVector< audio_io_handle_t, sp<AudioInputDescriptor> > |
| { |
| public: |
| bool isSourceActive(audio_source_t source) const; |
| |
| sp<AudioInputDescriptor> getInputFromId(audio_port_handle_t id) const; |
| |
| // count active capture sessions using one of the specified devices. |
| // ignore devices if AUDIO_DEVICE_IN_DEFAULT is passed |
| uint32_t activeInputsCountOnDevices(audio_devices_t devices = AUDIO_DEVICE_IN_DEFAULT) const; |
| |
| /** |
| * return io handle of active input or 0 if no input is active |
| * Only considers inputs from physical devices (e.g. main mic, headset mic) when |
| * ignoreVirtualInputs is true. |
| */ |
| Vector<sp <AudioInputDescriptor> > getActiveInputs(bool ignoreVirtualInputs = true); |
| |
| audio_devices_t getSupportedDevices(audio_io_handle_t handle) const; |
| |
| status_t dump(int fd) const; |
| }; |
| |
| |
| } // namespace android |