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108 lines
4.1 KiB
108 lines
4.1 KiB
/*
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* Copyright (C) 2015 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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#pragma once
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#include <policy.h>
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#include <EngineDefinition.h>
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#include <Volume.h>
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#include <system/audio.h>
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#include <media/AudioCommonTypes.h>
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#include <utils/Errors.h>
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#include <string>
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#include <vector>
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namespace android {
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/**
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* This interface allows the parameter plugin to:
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* - instantiate all the members of the policy engine (strategies, input sources, usages, profiles)
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* - keep up to date the attributes of these policy members ( i.e. devices to be used for a
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* strategy, strategy to be followed by a usage or a stream, ...)
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*/
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class AudioPolicyPluginInterface
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{
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public:
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/**
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* Add a streams to the engine.
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*
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* @param[in] name of the stream to add
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* @param[in] identifier: the numerical value associated to this member. It MUST match either
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* system/audio.h or system/audio_policy.h enumration value in order to link the
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* parameter controled by the PFW and the policy manager component.
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*
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* @return NO_ERROR if the stream has been added successfully, error code otherwise.
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*
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*/
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virtual android::status_t addStream(const std::string &name, audio_stream_type_t id) = 0;
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/**
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* Add an input source to the engine
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*
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* @param[in] name of the input source to add
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* @param[in] identifier: the numerical value associated to this member. It MUST match either
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* system/audio.h or system/audio_policy.h enumration value in order to link the
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* parameter controled by the PFW and the policy manager component.
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*
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* @return NO_ERROR if the input source has been added successfully, error code otherwise.
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*
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*/
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virtual android::status_t addInputSource(const std::string &name, audio_source_t id) = 0;
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/**
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* Set the strategy to be followed by a stream.
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*
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* @param[in] stream: name of the stream for which the strategy to use has to be set
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* @param[in] volumeProfile to follow for the given stream.
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*
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* @return true if the profile was set correclty for this stream, false otherwise.
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*/
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virtual bool setVolumeProfileForStream(const audio_stream_type_t &stream,
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const audio_stream_type_t &volumeProfile) = 0;
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/**
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* Set the input device to be used by an input source.
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*
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* @param[in] inputSource: name of the input source for which the device to use has to be set
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* @param[in] devices; mask of devices to be used for the given input source.
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*
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* @return true if the devices were set correclty for this input source, false otherwise.
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*/
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virtual bool setDeviceForInputSource(const audio_source_t &inputSource,
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audio_devices_t device) = 0;
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virtual void setDeviceAddressForProductStrategy(product_strategy_t strategy,
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const std::string &address) = 0;
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/**
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* Set the device to be used by a product strategy.
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*
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* @param[in] strategy: name of the product strategy for which the device to use has to be set
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* @param[in] devices; mask of devices to be used for the given strategy.
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*
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* @return true if the devices were set correclty for this strategy, false otherwise.
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*/
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virtual bool setDeviceTypesForProductStrategy(product_strategy_t strategy,
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audio_devices_t devices) = 0;
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virtual product_strategy_t getProductStrategyByName(const std::string &address) = 0;
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protected:
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virtual ~AudioPolicyPluginInterface() {}
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};
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} // namespace android
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