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 "FormattedSubsystemObject.h"
20#include "InstanceConfigurableElement.h"
21#include "MappingContext.h"
22#include <Volume.h>
23#include <AudioPolicyPluginInterface.h>
24#include <string>
25
26class PolicySubsystem;
27
28class VolumeProfile : public CFormattedSubsystemObject
29{
30private:
31    struct Point
32    {
33        int index;
34        /** Volume is using FixedPointParameter until float parameters are available. */
35        int16_t dbAttenuation;
36    } __attribute__((packed));
37
38public:
39    VolumeProfile(const std::string &mappingValue,
40                  CInstanceConfigurableElement *instanceConfigurableElement,
41                  const CMappingContext &context);
42
43protected:
44    virtual bool receiveFromHW(std::string &error);
45    virtual bool sendToHW(std::string &error);
46
47private:
48    const PolicySubsystem *mPolicySubsystem; /**< Route subsytem plugin. */
49
50    /**
51     * Interface to communicate with Audio Policy Engine.
52     */
53    android::AudioPolicyPluginInterface *mPolicyPluginInterface;
54
55    /**
56     * volume profile identifier,  which is in fact a stream type to link with audio.h.
57     */
58    audio_stream_type_t mId;
59
60    size_t mPoints;
61    Volume::device_category mCategory;
62
63    static const uint32_t gFractional = 8; /**< Beware to align with the structure. */
64};
65