1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
|
// Copyright 2013 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CHROMEOS_ASH_COMPONENTS_DBUS_AUDIO_AUDIO_NODE_H_
#define CHROMEOS_ASH_COMPONENTS_DBUS_AUDIO_AUDIO_NODE_H_
#include <stdint.h>
#include <string>
#include <vector>
#include "base/component_export.h"
namespace ash {
constexpr int32_t NUMBER_OF_VOLUME_STEPS_DEFAULT = 25;
// Structure to hold AudioNode data received from cras.
struct COMPONENT_EXPORT(DBUS_AUDIO) AudioNode {
bool is_input = false;
uint64_t id = 0;
bool has_v2_stable_device_id = false;
uint64_t stable_device_id_v1 = 0;
uint64_t stable_device_id_v2 = 0;
std::string device_name;
std::string type;
std::string name;
bool active = false;
// Time that the node was plugged in.
uint64_t plugged_time = 0;
// Max supported channel count of the device for the node.
uint32_t max_supported_channels = 0;
// Bit-wise audio effect support information.
uint32_t audio_effect = 0;
// The number of volume steps that can be adjusted for the node.
// Mainly used to calculate the percentage of playback volume change.
// e.g. number_of_volume_steps=25 volume will change 4% (100%/25=4%) for one
// volume change event. If this value is set to 0, indicates that the value
// for this node is invalid. Currently all input nodes this value is invalid
// (0), all output nodes should get a valid number (>0) if output nodes
// somehow get a number_of_volume_steps <=0, use 25 as default value.
int32_t number_of_volume_steps = 0;
AudioNode();
AudioNode(bool is_input,
uint64_t id,
bool has_v2_stable_device_id,
uint64_t stable_device_id_v1,
uint64_t stable_device_id_v2,
std::string device_name,
std::string type,
std::string name,
bool active,
uint64_t plugged_time,
uint32_t max_supported_channels,
uint32_t audio_effect,
int32_t number_of_volume_steps);
AudioNode(const AudioNode& other);
~AudioNode();
std::string ToString() const;
int StableDeviceIdVersion() const;
uint64_t StableDeviceId() const;
};
typedef std::vector<AudioNode> AudioNodeList;
} // namespace ash
#endif // CHROMEOS_ASH_COMPONENTS_DBUS_AUDIO_AUDIO_NODE_H_
|
