summaryrefslogtreecommitdiffstats
path: root/dom/media/gtest/TestAudioDeviceEnumerator.cpp
blob: e3c10f961e6c3f5dce145f52ccef1ad20395464c (plain)
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
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#define ENABLE_SET_CUBEB_BACKEND 1
#include "CubebDeviceEnumerator.h"
#include "gtest/gtest-printers.h"
#include "gtest/gtest.h"
#include "mozilla/Attributes.h"
#include "mozilla/UniquePtr.h"
#include "mozilla/media/MediaUtils.h"
#include "nsTArray.h"

#include "MockCubeb.h"

using namespace mozilla;
using AudioDeviceSet = CubebDeviceEnumerator::AudioDeviceSet;

const bool DEBUG_PRINTS = false;

enum DeviceOperation { ADD, REMOVE };

void TestEnumeration(MockCubeb* aMock, uint32_t aExpectedDeviceCount,
                     DeviceOperation aOperation, cubeb_device_type aType) {
  RefPtr<CubebDeviceEnumerator> enumerator =
      CubebDeviceEnumerator::GetInstance();

  RefPtr<const AudioDeviceSet> devices;

  if (aType == CUBEB_DEVICE_TYPE_INPUT) {
    devices = enumerator->EnumerateAudioInputDevices();
  }

  if (aType == CUBEB_DEVICE_TYPE_OUTPUT) {
    devices = enumerator->EnumerateAudioOutputDevices();
  }

  EXPECT_EQ(devices->Length(), aExpectedDeviceCount)
      << "Device count is correct when enumerating";

  if (DEBUG_PRINTS) {
    for (const auto& deviceInfo : *devices) {
      printf("=== Before removal\n");
      PrintDevice(deviceInfo);
    }
  }

  if (aOperation == DeviceOperation::REMOVE) {
    aMock->RemoveDevice(reinterpret_cast<cubeb_devid>(1));
  } else {
    aMock->AddDevice(DeviceTemplate(reinterpret_cast<cubeb_devid>(123), aType));
  }

  if (aType == CUBEB_DEVICE_TYPE_INPUT) {
    devices = enumerator->EnumerateAudioInputDevices();
  }

  if (aType == CUBEB_DEVICE_TYPE_OUTPUT) {
    devices = enumerator->EnumerateAudioOutputDevices();
  }

  uint32_t newExpectedDeviceCount = aOperation == DeviceOperation::REMOVE
                                        ? aExpectedDeviceCount - 1
                                        : aExpectedDeviceCount + 1;

  EXPECT_EQ(devices->Length(), newExpectedDeviceCount)
      << "Device count is correct when enumerating after operation";

  if (DEBUG_PRINTS) {
    for (const auto& deviceInfo : *devices) {
      printf("=== After removal\n");
      PrintDevice(deviceInfo);
    }
  }
}

#ifndef ANDROID
TEST(CubebDeviceEnumerator, EnumerateSimple)
{
  // It looks like we're leaking this object, but in fact it will be owned by
  // CubebUtils: `cubeb_destroy()` is called when `ForceSetCubebContext()` is
  // called again or when layout statics are shutdown, and we cast back to a
  // MockCubeb* and call the dtor.
  MockCubeb* mock = new MockCubeb();
  mozilla::CubebUtils::ForceSetCubebContext(mock->AsCubebContext());

  // We want to test whether CubebDeviceEnumerator works with and without a
  // backend that can notify of a device collection change via callback.
  // Additionally, we're testing that both adding and removing a device
  // invalidates the list correctly.
  bool supportsDeviceChangeCallback[2] = {true, false};
  DeviceOperation operations[2] = {DeviceOperation::ADD,
                                   DeviceOperation::REMOVE};

  for (bool supports : supportsDeviceChangeCallback) {
    // Shutdown for `supports` to take effect
    CubebDeviceEnumerator::Shutdown();
    mock->SetSupportDeviceChangeCallback(supports);
    for (DeviceOperation op : operations) {
      uint32_t device_count = 4;

      cubeb_device_type deviceType = CUBEB_DEVICE_TYPE_INPUT;
      AddDevices(mock, device_count, deviceType);
      TestEnumeration(mock, device_count, op, deviceType);

      deviceType = CUBEB_DEVICE_TYPE_OUTPUT;
      AddDevices(mock, device_count, deviceType);
      TestEnumeration(mock, device_count, op, deviceType);
    }
  }
  // Shutdown to clean up the last `supports` effect
  CubebDeviceEnumerator::Shutdown();
}

TEST(CubebDeviceEnumerator, ZeroChannelDevices)
{
  MockCubeb* mock = new MockCubeb();
  mozilla::CubebUtils::ForceSetCubebContext(mock->AsCubebContext());

  // Create devices with different channel count, including 0-channel

  cubeb_device_info dev1 = DeviceTemplate(reinterpret_cast<cubeb_devid>(1),
                                          CUBEB_DEVICE_TYPE_INPUT, "dev 1");
  dev1.max_channels = 1;
  mock->AddDevice(dev1);

  cubeb_device_info dev2 = DeviceTemplate(reinterpret_cast<cubeb_devid>(2),
                                          CUBEB_DEVICE_TYPE_INPUT, "dev 2");
  dev2.max_channels = 0;
  mock->AddDevice(dev2);

  cubeb_device_info dev3 = DeviceTemplate(reinterpret_cast<cubeb_devid>(3),
                                          CUBEB_DEVICE_TYPE_OUTPUT, "dev 3");
  dev3.max_channels = 2;
  mock->AddDevice(dev3);

  cubeb_device_info dev4 = DeviceTemplate(reinterpret_cast<cubeb_devid>(4),
                                          CUBEB_DEVICE_TYPE_OUTPUT, "dev 4");
  dev4.max_channels = 0;
  mock->AddDevice(dev4);

  // Make sure the devices are added to cubeb.

  cubeb_device_collection inputCollection = {nullptr, 0};
  mock->EnumerateDevices(CUBEB_DEVICE_TYPE_INPUT, &inputCollection);
  EXPECT_EQ(inputCollection.count, 2U);
  EXPECT_EQ(inputCollection.device[0].devid, dev1.devid);
  EXPECT_EQ(inputCollection.device[1].devid, dev2.devid);
  mock->DestroyDeviceCollection(&inputCollection);
  EXPECT_EQ(inputCollection.count, 0U);

  cubeb_device_collection outputCollection = {nullptr, 0};
  mock->EnumerateDevices(CUBEB_DEVICE_TYPE_OUTPUT, &outputCollection);
  EXPECT_EQ(outputCollection.count, 2U);
  EXPECT_EQ(outputCollection.device[0].devid, dev3.devid);
  EXPECT_EQ(outputCollection.device[1].devid, dev4.devid);
  mock->DestroyDeviceCollection(&outputCollection);
  EXPECT_EQ(outputCollection.count, 0U);

  // Enumerate the devices. The result should exclude the 0-channel devices.

  RefPtr<CubebDeviceEnumerator> enumerator =
      CubebDeviceEnumerator::GetInstance();

  RefPtr<const AudioDeviceSet> inputDevices =
      enumerator->EnumerateAudioInputDevices();
  EXPECT_EQ(inputDevices->Length(), 1U);
  EXPECT_EQ(inputDevices->ElementAt(0)->DeviceID(), dev1.devid);
  EXPECT_EQ(inputDevices->ElementAt(0)->MaxChannels(), dev1.max_channels);

  RefPtr<const AudioDeviceSet> outputDevices =
      enumerator->EnumerateAudioOutputDevices();
  EXPECT_EQ(outputDevices->Length(), 1U);
  EXPECT_EQ(outputDevices->ElementAt(0)->DeviceID(), dev3.devid);
  EXPECT_EQ(outputDevices->ElementAt(0)->MaxChannels(), dev3.max_channels);
}

#else  // building for Android, which has no device enumeration support
TEST(CubebDeviceEnumerator, EnumerateAndroid)
{
  MockCubeb* mock = new MockCubeb();
  mozilla::CubebUtils::ForceSetCubebContext(mock->AsCubebContext());

  RefPtr<CubebDeviceEnumerator> enumerator =
      CubebDeviceEnumerator::GetInstance();

  RefPtr<const AudioDeviceSet> inputDevices =
      enumerator->EnumerateAudioInputDevices();
  EXPECT_EQ(inputDevices->Length(), 1u)
      << "Android always exposes a single input device.";
  EXPECT_EQ((*inputDevices)[0]->MaxChannels(), 1u) << "With a single channel.";
  EXPECT_EQ((*inputDevices)[0]->DeviceID(), nullptr)
      << "It's always the default input device.";
  EXPECT_TRUE((*inputDevices)[0]->Preferred())
      << "it's always the prefered input device.";

  RefPtr<const AudioDeviceSet> outputDevices =
      enumerator->EnumerateAudioOutputDevices();
  EXPECT_EQ(outputDevices->Length(), 1u)
      << "Android always exposes a single output device.";
  EXPECT_EQ((*outputDevices)[0]->MaxChannels(), 2u) << "With stereo channels.";
  EXPECT_EQ((*outputDevices)[0]->DeviceID(), nullptr)
      << "It's always the default output device.";
  EXPECT_TRUE((*outputDevices)[0]->Preferred())
      << "it's always the prefered output device.";
}
#endif

TEST(CubebDeviceEnumerator, ForceNullCubebContext)
{
  mozilla::CubebUtils::ForceSetCubebContext(nullptr);
  RefPtr<CubebDeviceEnumerator> enumerator =
      CubebDeviceEnumerator::GetInstance();

  RefPtr inputDevices = enumerator->EnumerateAudioInputDevices();
  EXPECT_EQ(inputDevices->Length(), 0u)
      << "Enumeration must fail, input device list must be empty.";

  RefPtr outputDevices = enumerator->EnumerateAudioOutputDevices();
  EXPECT_EQ(outputDevices->Length(), 0u)
      << "Enumeration must fail, output device list must be empty.";

  // Shutdown to clean up the null context effect
  CubebDeviceEnumerator::Shutdown();
}

TEST(CubebDeviceEnumerator, DeviceInfoFromName)
{
  MockCubeb* mock = new MockCubeb();
  mozilla::CubebUtils::ForceSetCubebContext(mock->AsCubebContext());

  cubeb_device_type deviceTypes[2] = {CUBEB_DEVICE_TYPE_INPUT,
                                      CUBEB_DEVICE_TYPE_OUTPUT};

  bool supportsDeviceChangeCallback[2] = {true, false};
  for (bool supports : supportsDeviceChangeCallback) {
    // Shutdown for `supports` to take effect
    CubebDeviceEnumerator::Shutdown();
    mock->SetSupportDeviceChangeCallback(supports);
    for (cubeb_device_type& deviceType : deviceTypes) {
      cubeb_devid id_1 = reinterpret_cast<cubeb_devid>(1);
      mock->AddDevice(DeviceTemplate(id_1, deviceType, "device name 1"));
      cubeb_devid id_2 = reinterpret_cast<cubeb_devid>(2);
      nsCString device_name = "device name 2"_ns;
      mock->AddDevice(DeviceTemplate(id_2, deviceType, device_name.get()));
      cubeb_devid id_3 = reinterpret_cast<cubeb_devid>(3);
      mock->AddDevice(DeviceTemplate(id_3, deviceType, "device name 3"));

      RefPtr<CubebDeviceEnumerator> enumerator =
          CubebDeviceEnumerator::GetInstance();

      EnumeratorSide side = (deviceType == CUBEB_DEVICE_TYPE_INPUT)
                                ? EnumeratorSide::INPUT
                                : EnumeratorSide::OUTPUT;
      RefPtr<AudioDeviceInfo> devInfo = enumerator->DeviceInfoFromName(
          NS_ConvertUTF8toUTF16(device_name), side);
      EXPECT_TRUE(devInfo) << "the device exist";
      EXPECT_EQ(devInfo->Name(), NS_ConvertUTF8toUTF16(device_name))
          << "verify the device";

      mock->RemoveDevice(id_2);

      devInfo = enumerator->DeviceInfoFromName(
          NS_ConvertUTF8toUTF16(device_name), side);
      EXPECT_FALSE(devInfo) << "the device does not exist any more";
    }
  }
  // Shutdown for `supports` to take effect
  CubebDeviceEnumerator::Shutdown();
}
#undef ENABLE_SET_CUBEB_BACKEND