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473 lines
24 KiB
473 lines
24 KiB
/*
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* Copyright (C) 2009 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef ANDROID_AUDIOPOLICY_INTERFACE_H
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#define ANDROID_AUDIOPOLICY_INTERFACE_H
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#include <media/AudioCommonTypes.h>
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#include <media/AudioDeviceTypeAddr.h>
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#include <media/AudioSystem.h>
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#include <media/AudioPolicy.h>
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#include <media/DeviceDescriptorBase.h>
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#include <android/content/AttributionSourceState.h>
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#include <utils/String8.h>
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namespace android {
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using content::AttributionSourceState;
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// ----------------------------------------------------------------------------
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// The AudioPolicyInterface and AudioPolicyClientInterface classes define the communication interfaces
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// between the platform specific audio policy manager and Android generic audio policy manager.
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// The platform specific audio policy manager must implement methods of the AudioPolicyInterface class.
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// This implementation makes use of the AudioPolicyClientInterface to control the activity and
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// configuration of audio input and output streams.
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//
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// The platform specific audio policy manager is in charge of the audio routing and volume control
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// policies for a given platform.
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// The main roles of this module are:
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// - keep track of current system state (removable device connections, phone state, user requests...).
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// System state changes and user actions are notified to audio policy manager with methods of the AudioPolicyInterface.
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// - process getOutput() queries received when AudioTrack objects are created: Those queries
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// return a handler on an output that has been selected, configured and opened by the audio policy manager and that
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// must be used by the AudioTrack when registering to the AudioFlinger with the createTrack() method.
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// When the AudioTrack object is released, a putOutput() query is received and the audio policy manager can decide
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// to close or reconfigure the output depending on other streams using this output and current system state.
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// - similarly process getInput() and putInput() queries received from AudioRecord objects and configure audio inputs.
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// - process volume control requests: the stream volume is converted from an index value (received from UI) to a float value
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// applicable to each output as a function of platform specific settings and current output route (destination device). It
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// also make sure that streams are not muted if not allowed (e.g. camera shutter sound in some countries).
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//
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// The platform specific audio policy manager is provided as a shared library by platform vendors (as for libaudio.so)
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// and is linked with libaudioflinger.so
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// Audio Policy Manager Interface
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class AudioPolicyInterface
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{
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public:
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typedef enum {
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API_INPUT_INVALID = -1,
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API_INPUT_LEGACY = 0,// e.g. audio recording from a microphone
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API_INPUT_MIX_CAPTURE,// used for "remote submix" legacy mode (no DAP),
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// capture of the media to play it remotely
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API_INPUT_MIX_EXT_POLICY_REROUTE,// used for platform audio rerouting, where mixes are
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// handled by external and dynamically installed
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// policies which reroute audio mixes
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API_INPUT_MIX_PUBLIC_CAPTURE_PLAYBACK, // used for playback capture with a MediaProjection
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API_INPUT_TELEPHONY_RX, // used for capture from telephony RX path
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} input_type_t;
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typedef enum {
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API_OUTPUT_INVALID = -1,
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API_OUTPUT_LEGACY = 0,// e.g. audio playing to speaker
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API_OUT_MIX_PLAYBACK, // used for "remote submix" playback of audio from remote source
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// to local capture
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API_OUTPUT_TELEPHONY_TX, // used for playback to telephony TX path
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} output_type_t;
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public:
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virtual ~AudioPolicyInterface() {}
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//
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// configuration functions
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//
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// Informs APM that new HAL modules are available. This typically happens
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// due to registration of an audio HAL service.
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virtual void onNewAudioModulesAvailable() = 0;
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// indicate a change in device connection status
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virtual status_t setDeviceConnectionState(audio_devices_t device,
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audio_policy_dev_state_t state,
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const char *device_address,
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const char *device_name,
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audio_format_t encodedFormat) = 0;
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// retrieve a device connection status
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virtual audio_policy_dev_state_t getDeviceConnectionState(audio_devices_t device,
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const char *device_address) = 0;
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// indicate a change in device configuration
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virtual status_t handleDeviceConfigChange(audio_devices_t device,
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const char *device_address,
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const char *device_name,
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audio_format_t encodedFormat) = 0;
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// indicate a change in phone state. Valid phones states are defined by audio_mode_t
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virtual void setPhoneState(audio_mode_t state) = 0;
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// force using a specific device category for the specified usage
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virtual void setForceUse(audio_policy_force_use_t usage, audio_policy_forced_cfg_t config) = 0;
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// retrieve current device category forced for a given usage
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virtual audio_policy_forced_cfg_t getForceUse(audio_policy_force_use_t usage) = 0;
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// set a system property (e.g. camera sound always audible)
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virtual void setSystemProperty(const char* property, const char* value) = 0;
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// check proper initialization
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virtual status_t initCheck() = 0;
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//
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// Audio routing query functions
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//
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// request an output appropriate for playback of the supplied stream type and parameters
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virtual audio_io_handle_t getOutput(audio_stream_type_t stream) = 0;
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virtual status_t getOutputForAttr(const audio_attributes_t *attr,
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audio_io_handle_t *output,
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audio_session_t session,
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audio_stream_type_t *stream,
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const AttributionSourceState& attributionSouce,
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const audio_config_t *config,
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audio_output_flags_t *flags,
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audio_port_handle_t *selectedDeviceId,
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audio_port_handle_t *portId,
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std::vector<audio_io_handle_t> *secondaryOutputs,
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output_type_t *outputType) = 0;
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// indicates to the audio policy manager that the output starts being used by corresponding stream.
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virtual status_t startOutput(audio_port_handle_t portId) = 0;
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// indicates to the audio policy manager that the output stops being used by corresponding stream.
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virtual status_t stopOutput(audio_port_handle_t portId) = 0;
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// releases the output, return true if the output descriptor is reopened.
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virtual bool releaseOutput(audio_port_handle_t portId) = 0;
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// request an input appropriate for record from the supplied device with supplied parameters.
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virtual status_t getInputForAttr(const audio_attributes_t *attr,
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audio_io_handle_t *input,
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audio_unique_id_t riid,
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audio_session_t session,
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const AttributionSourceState& attributionSouce,
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const audio_config_base_t *config,
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audio_input_flags_t flags,
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audio_port_handle_t *selectedDeviceId,
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input_type_t *inputType,
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audio_port_handle_t *portId) = 0;
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// indicates to the audio policy manager that the input starts being used.
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virtual status_t startInput(audio_port_handle_t portId) = 0;
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// indicates to the audio policy manager that the input stops being used.
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virtual status_t stopInput(audio_port_handle_t portId) = 0;
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// releases the input.
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virtual void releaseInput(audio_port_handle_t portId) = 0;
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//
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// volume control functions
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//
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// initialises stream volume conversion parameters by specifying volume index range.
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virtual void initStreamVolume(audio_stream_type_t stream,
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int indexMin,
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int indexMax) = 0;
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// sets the new stream volume at a level corresponding to the supplied index for the
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// supplied device. By convention, specifying AUDIO_DEVICE_OUT_DEFAULT_FOR_VOLUME means
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// setting volume for all devices
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virtual status_t setStreamVolumeIndex(audio_stream_type_t stream,
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int index,
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audio_devices_t device) = 0;
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// retrieve current volume index for the specified stream and the
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// specified device. By convention, specifying AUDIO_DEVICE_OUT_DEFAULT_FOR_VOLUME means
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// querying the volume of the active device.
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virtual status_t getStreamVolumeIndex(audio_stream_type_t stream,
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int *index,
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audio_devices_t device) = 0;
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virtual status_t setVolumeIndexForAttributes(const audio_attributes_t &attr,
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int index,
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audio_devices_t device) = 0;
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virtual status_t getVolumeIndexForAttributes(const audio_attributes_t &attr,
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int &index,
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audio_devices_t device) = 0;
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virtual status_t getMaxVolumeIndexForAttributes(const audio_attributes_t &attr,
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int &index) = 0;
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virtual status_t getMinVolumeIndexForAttributes(const audio_attributes_t &attr,
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int &index) = 0;
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// return the strategy corresponding to a given stream type
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virtual product_strategy_t getStrategyForStream(audio_stream_type_t stream) = 0;
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// return the enabled output devices for the given stream type
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virtual audio_devices_t getDevicesForStream(audio_stream_type_t stream) = 0;
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// retrieves the list of enabled output devices for the given audio attributes
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virtual status_t getDevicesForAttributes(const audio_attributes_t &attr,
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AudioDeviceTypeAddrVector *devices) = 0;
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// Audio effect management
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virtual audio_io_handle_t getOutputForEffect(const effect_descriptor_t *desc) = 0;
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virtual status_t registerEffect(const effect_descriptor_t *desc,
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audio_io_handle_t io,
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product_strategy_t strategy,
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int session,
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int id) = 0;
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virtual status_t unregisterEffect(int id) = 0;
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virtual status_t setEffectEnabled(int id, bool enabled) = 0;
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virtual status_t moveEffectsToIo(const std::vector<int>& ids, audio_io_handle_t io) = 0;
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virtual bool isStreamActive(audio_stream_type_t stream, uint32_t inPastMs = 0) const = 0;
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virtual bool isStreamActiveRemotely(audio_stream_type_t stream,
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uint32_t inPastMs = 0) const = 0;
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virtual bool isSourceActive(audio_source_t source) const = 0;
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//dump state
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virtual status_t dump(int fd) = 0;
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virtual status_t setAllowedCapturePolicy(uid_t uid, audio_flags_mask_t flags) = 0;
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virtual audio_offload_mode_t getOffloadSupport(const audio_offload_info_t& offloadInfo) = 0;
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virtual bool isDirectOutputSupported(const audio_config_base_t& config,
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const audio_attributes_t& attributes) = 0;
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virtual status_t listAudioPorts(audio_port_role_t role,
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audio_port_type_t type,
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unsigned int *num_ports,
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struct audio_port_v7 *ports,
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unsigned int *generation) = 0;
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virtual status_t getAudioPort(struct audio_port_v7 *port) = 0;
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virtual status_t createAudioPatch(const struct audio_patch *patch,
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audio_patch_handle_t *handle,
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uid_t uid) = 0;
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virtual status_t releaseAudioPatch(audio_patch_handle_t handle,
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uid_t uid) = 0;
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virtual status_t listAudioPatches(unsigned int *num_patches,
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struct audio_patch *patches,
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unsigned int *generation) = 0;
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virtual status_t setAudioPortConfig(const struct audio_port_config *config) = 0;
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virtual void releaseResourcesForUid(uid_t uid) = 0;
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virtual status_t acquireSoundTriggerSession(audio_session_t *session,
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audio_io_handle_t *ioHandle,
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audio_devices_t *device) = 0;
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virtual status_t releaseSoundTriggerSession(audio_session_t session) = 0;
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virtual status_t registerPolicyMixes(const Vector<AudioMix>& mixes) = 0;
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virtual status_t unregisterPolicyMixes(Vector<AudioMix> mixes) = 0;
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virtual status_t setUidDeviceAffinities(uid_t uid, const AudioDeviceTypeAddrVector& devices)
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= 0;
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virtual status_t removeUidDeviceAffinities(uid_t uid) = 0;
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virtual status_t setUserIdDeviceAffinities(int userId,
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const AudioDeviceTypeAddrVector& devices) = 0;
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virtual status_t removeUserIdDeviceAffinities(int userId) = 0;
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virtual status_t startAudioSource(const struct audio_port_config *source,
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const audio_attributes_t *attributes,
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audio_port_handle_t *portId,
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uid_t uid) = 0;
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virtual status_t stopAudioSource(audio_port_handle_t portId) = 0;
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virtual status_t setMasterMono(bool mono) = 0;
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virtual status_t getMasterMono(bool *mono) = 0;
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virtual float getStreamVolumeDB(
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audio_stream_type_t stream, int index, audio_devices_t device) = 0;
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virtual status_t getSurroundFormats(unsigned int *numSurroundFormats,
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audio_format_t *surroundFormats,
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bool *surroundFormatsEnabled) = 0;
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virtual status_t getReportedSurroundFormats(unsigned int *numSurroundFormats,
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audio_format_t *surroundFormats) = 0;
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virtual status_t setSurroundFormatEnabled(audio_format_t audioFormat, bool enabled) = 0;
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virtual bool isHapticPlaybackSupported() = 0;
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virtual status_t getHwOffloadEncodingFormatsSupportedForA2DP(
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std::vector<audio_format_t> *formats) = 0;
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virtual void setAppState(audio_port_handle_t portId, app_state_t state) = 0;
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virtual status_t listAudioProductStrategies(AudioProductStrategyVector &strategies) = 0;
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virtual status_t getProductStrategyFromAudioAttributes(
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const AudioAttributes &aa, product_strategy_t &productStrategy,
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bool fallbackOnDefault) = 0;
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virtual status_t listAudioVolumeGroups(AudioVolumeGroupVector &groups) = 0;
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virtual status_t getVolumeGroupFromAudioAttributes(
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const AudioAttributes &aa, volume_group_t &volumeGroup, bool fallbackOnDefault) = 0;
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virtual bool isCallScreenModeSupported() = 0;
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virtual status_t setDevicesRoleForStrategy(product_strategy_t strategy,
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device_role_t role,
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const AudioDeviceTypeAddrVector &devices) = 0;
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virtual status_t removeDevicesRoleForStrategy(product_strategy_t strategy,
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device_role_t role) = 0;
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virtual status_t getDevicesForRoleAndStrategy(product_strategy_t strategy,
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device_role_t role,
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AudioDeviceTypeAddrVector &devices) = 0;
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virtual status_t setDevicesRoleForCapturePreset(audio_source_t audioSource,
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device_role_t role,
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const AudioDeviceTypeAddrVector &devices) = 0;
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virtual status_t addDevicesRoleForCapturePreset(audio_source_t audioSource,
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device_role_t role,
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const AudioDeviceTypeAddrVector &devices) = 0;
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virtual status_t removeDevicesRoleForCapturePreset(
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audio_source_t audioSource, device_role_t role,
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const AudioDeviceTypeAddrVector& devices) = 0;
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virtual status_t clearDevicesRoleForCapturePreset(audio_source_t audioSource,
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device_role_t role) = 0;
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virtual status_t getDevicesForRoleAndCapturePreset(audio_source_t audioSource,
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device_role_t role,
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AudioDeviceTypeAddrVector &devices) = 0;
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};
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// Audio Policy client Interface
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class AudioPolicyClientInterface
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{
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public:
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virtual ~AudioPolicyClientInterface() {}
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//
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// Audio HW module functions
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//
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// loads a HW module.
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virtual audio_module_handle_t loadHwModule(const char *name) = 0;
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//
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// Audio output Control functions
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//
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// opens an audio output with the requested parameters. The parameter values can indicate to use the default values
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// in case the audio policy manager has no specific requirements for the output being opened.
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// When the function returns, the parameter values reflect the actual values used by the audio hardware output stream.
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// The audio policy manager can check if the proposed parameters are suitable or not and act accordingly.
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virtual status_t openOutput(audio_module_handle_t module,
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audio_io_handle_t *output,
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audio_config_t *config,
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const sp<DeviceDescriptorBase>& device,
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uint32_t *latencyMs,
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audio_output_flags_t flags) = 0;
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// creates a special output that is duplicated to the two outputs passed as arguments. The duplication is performed by
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// a special mixer thread in the AudioFlinger.
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virtual audio_io_handle_t openDuplicateOutput(audio_io_handle_t output1, audio_io_handle_t output2) = 0;
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// closes the output stream
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virtual status_t closeOutput(audio_io_handle_t output) = 0;
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// suspends the output. When an output is suspended, the corresponding audio hardware output stream is placed in
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// standby and the AudioTracks attached to the mixer thread are still processed but the output mix is discarded.
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virtual status_t suspendOutput(audio_io_handle_t output) = 0;
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// restores a suspended output.
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virtual status_t restoreOutput(audio_io_handle_t output) = 0;
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//
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// Audio input Control functions
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//
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// opens an audio input
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virtual status_t openInput(audio_module_handle_t module,
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audio_io_handle_t *input,
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audio_config_t *config,
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audio_devices_t *device,
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const String8& address,
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audio_source_t source,
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audio_input_flags_t flags) = 0;
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// closes an audio input
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virtual status_t closeInput(audio_io_handle_t input) = 0;
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//
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// misc control functions
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//
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// set a stream volume for a particular output. For the same user setting, a given stream type can have different volumes
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// for each output (destination device) it is attached to.
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virtual status_t setStreamVolume(audio_stream_type_t stream, float volume, audio_io_handle_t output, int delayMs = 0) = 0;
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// invalidate a stream type, causing a reroute to an unspecified new output
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virtual status_t invalidateStream(audio_stream_type_t stream) = 0;
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// function enabling to send proprietary informations directly from audio policy manager to audio hardware interface.
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virtual void setParameters(audio_io_handle_t ioHandle, const String8& keyValuePairs, int delayMs = 0) = 0;
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// function enabling to receive proprietary informations directly from audio hardware interface to audio policy manager.
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virtual String8 getParameters(audio_io_handle_t ioHandle, const String8& keys) = 0;
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// set down link audio volume.
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virtual status_t setVoiceVolume(float volume, int delayMs = 0) = 0;
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// move effect to the specified output
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virtual status_t moveEffects(audio_session_t session,
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audio_io_handle_t srcOutput,
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audio_io_handle_t dstOutput) = 0;
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virtual void setEffectSuspended(int effectId,
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audio_session_t sessionId,
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bool suspended) = 0;
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/* Create a patch between several source and sink ports */
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virtual status_t createAudioPatch(const struct audio_patch *patch,
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audio_patch_handle_t *handle,
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int delayMs) = 0;
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/* Release a patch */
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virtual status_t releaseAudioPatch(audio_patch_handle_t handle,
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int delayMs) = 0;
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/* Set audio port configuration */
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virtual status_t setAudioPortConfig(const struct audio_port_config *config, int delayMs) = 0;
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virtual void onAudioPortListUpdate() = 0;
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virtual void onAudioPatchListUpdate() = 0;
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virtual void onAudioVolumeGroupChanged(volume_group_t group, int flags) = 0;
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virtual audio_unique_id_t newAudioUniqueId(audio_unique_id_use_t use) = 0;
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virtual void onDynamicPolicyMixStateUpdate(String8 regId, int32_t state) = 0;
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virtual void onRecordingConfigurationUpdate(int event,
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const record_client_info_t *clientInfo,
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const audio_config_base_t *clientConfig,
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std::vector<effect_descriptor_t> clientEffects,
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const audio_config_base_t *deviceConfig,
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std::vector<effect_descriptor_t> effects,
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audio_patch_handle_t patchHandle,
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audio_source_t source) = 0;
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virtual void onRoutingUpdated() = 0;
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// Used to notify the sound trigger module that an audio capture is about to
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// take place. This should typically result in any active recognition
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// sessions to be preempted on modules that do not support sound trigger
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// recognition concurrently with audio capture.
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virtual void setSoundTriggerCaptureState(bool active) = 0;
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virtual status_t getAudioPort(struct audio_port_v7 *port) = 0;
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virtual status_t updateSecondaryOutputs(
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const TrackSecondaryOutputsMap& trackSecondaryOutputs) = 0;
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};
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// These are the signatures of createAudioPolicyManager/destroyAudioPolicyManager
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// methods respectively, expected by AudioPolicyService, needs to be exposed by
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// libaudiopolicymanagercustom.
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using CreateAudioPolicyManagerInstance = AudioPolicyInterface* (*)(AudioPolicyClientInterface*);
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using DestroyAudioPolicyManagerInstance = void (*)(AudioPolicyInterface*);
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} // namespace android
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#endif // ANDROID_AUDIOPOLICY_INTERFACE_H
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