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/*
* 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 "Element.h"
#include "EngineDefinition.h"
#include <Volume.h>
#include <RoutingStrategy.h>
#include <map>
namespace android
{
namespace audio_policy
{
/**
* @tparam routing_strategy: Applicable strategy for this stream.
*/
template <>
class Element<audio_stream_type_t>
{
private:
typedef std::map<Volume::device_category, VolumeCurvePoints> VolumeProfiles;
typedef VolumeProfiles::iterator VolumeProfileIterator;
typedef VolumeProfiles::const_iterator VolumeProfileConstIterator;
public:
Element(const std::string &name)
: mName(name),
mApplicableStrategy(STRATEGY_MEDIA),
mIndexMin(0),
mIndexMax(1)
{}
~Element() {}
/**
* Returns identifier of this policy element
*
* @returns string representing the name of this policy element
*/
const std::string &getName() const { return mName; }
/**
* Set the unique identifier for this policy element.
*
* @tparam Key type of the unique identifier.
* @param[in] identifier to be set.
*
* @return NO_ERROR if the identifier is valid and set correctly, error code otherwise.
*/
status_t setIdentifier(audio_stream_type_t identifier);
/**
* @return the unique identifier of this policy element.
*/
audio_stream_type_t getIdentifier() const { return mIdentifier; }
/**
* A Policy element may implement getter/setter function for a given property.
* Property may be routing_strategy, audio_stream_type_t, audio_usage_t, audio_source_t
* or a string.
*/
template <typename Property>
Property get() const;
template <typename Property>
status_t set(Property property);
status_t setVolumeProfile(Volume::device_category category, const VolumeCurvePoints &points);
float volIndexToDb(Volume::device_category deviceCategory, int indexInUi);
status_t initVolume(int indexMin, int indexMax);
private:
/* Copy facilities are put private to disable copy. */
Element(const Element &object);
Element &operator=(const Element &object);
std::string mName; /**< Unique literal Identifier of a policy base element*/
audio_stream_type_t mIdentifier; /**< Unique numerical Identifier of a policy base element*/
routing_strategy mApplicableStrategy; /**< Applicable strategy for this stream. */
/**
* Collection of volume profiles indexed by the stream type.
* Volume is the only reason why the stream profile was not removed from policy when introducing
* attributes.
*/
VolumeProfiles mVolumeProfiles;
int mIndexMin;
int mIndexMax;
};
typedef Element<audio_stream_type_t> Stream;
} // namespace audio_policy
} // namespace android
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