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
71
72
73
74
75
76
77
|
// Copyright 2014 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "extensions/shell/browser/shell_audio_controller_chromeos.h"
#include <algorithm>
#include "chromeos/ash/components/audio/audio_device.h"
namespace extensions {
namespace {
using ::ash::AudioDevice;
using ::ash::AudioDeviceList;
using ::ash::CrasAudioHandler;
// Returns a pointer to the device in |devices| with ID |node_id|, or NULL if it
// isn't present.
const AudioDevice* GetDevice(const AudioDeviceList& devices, uint64_t node_id) {
for (AudioDeviceList::const_iterator it = devices.begin();
it != devices.end(); ++it) {
if (it->id == node_id)
return &(*it);
}
return nullptr;
}
} // namespace
ShellAudioController::ShellAudioController() {
CrasAudioHandler::Get()->AddAudioObserver(this);
ActivateDevices();
}
ShellAudioController::~ShellAudioController() {
CrasAudioHandler::Get()->RemoveAudioObserver(this);
}
void ShellAudioController::OnAudioNodesChanged() {
VLOG(1) << "Audio nodes changed";
ActivateDevices();
}
void ShellAudioController::ActivateDevices() {
auto* handler = CrasAudioHandler::Get();
AudioDeviceList devices;
handler->GetAudioDevices(&devices);
sort(devices.begin(), devices.end(), ash::AudioDeviceCompare());
uint64_t best_input = 0, best_output = 0;
for (AudioDeviceList::const_reverse_iterator it = devices.rbegin();
it != devices.rend() && (!best_input || !best_output); ++it) {
// TODO(derat): Need to check |plugged_time|?
if (it->is_input && !best_input)
best_input = it->id;
else if (!it->is_input && !best_output)
best_output = it->id;
}
if (best_input && best_input != handler->GetPrimaryActiveInputNode()) {
const AudioDevice* device = GetDevice(devices, best_input);
DCHECK(device);
VLOG(1) << "Activating input device: " << device->ToString();
handler->SwitchToDevice(*device, true,
ash::DeviceActivateType::kActivateByUser);
}
if (best_output && best_output != handler->GetPrimaryActiveOutputNode()) {
const AudioDevice* device = GetDevice(devices, best_output);
DCHECK(device);
VLOG(1) << "Activating output device: " << device->ToString();
handler->SwitchToDevice(*device, true,
ash::DeviceActivateType::kActivateByUser);
}
}
} // namespace extensions
|
