1 // Copyright 2013 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 #include "media/audio/fake_audio_manager.h"
6
7 #include <algorithm>
8 #include <utility>
9
10 namespace media {
11
12 namespace {
13
14 const int kDefaultInputBufferSize = 1024;
15 const int kDefaultSampleRate = 48000;
16
17 } // namespace
18
FakeAudioManager(std::unique_ptr<AudioThread> audio_thread,AudioLogFactory * audio_log_factory)19 FakeAudioManager::FakeAudioManager(std::unique_ptr<AudioThread> audio_thread,
20 AudioLogFactory* audio_log_factory)
21 : AudioManagerBase(std::move(audio_thread), audio_log_factory) {}
22
23 FakeAudioManager::~FakeAudioManager() = default;
24
25 // Implementation of AudioManager.
HasAudioOutputDevices()26 bool FakeAudioManager::HasAudioOutputDevices() { return false; }
27
HasAudioInputDevices()28 bool FakeAudioManager::HasAudioInputDevices() { return false; }
29
GetName()30 const char* FakeAudioManager::GetName() {
31 return "Fake";
32 }
33
34 // Implementation of AudioManagerBase.
MakeLinearOutputStream(const AudioParameters & params,const LogCallback & log_callback)35 AudioOutputStream* FakeAudioManager::MakeLinearOutputStream(
36 const AudioParameters& params,
37 const LogCallback& log_callback) {
38 return FakeAudioOutputStream::MakeFakeStream(this, params);
39 }
40
MakeLowLatencyOutputStream(const AudioParameters & params,const std::string & device_id,const LogCallback & log_callback)41 AudioOutputStream* FakeAudioManager::MakeLowLatencyOutputStream(
42 const AudioParameters& params,
43 const std::string& device_id,
44 const LogCallback& log_callback) {
45 return FakeAudioOutputStream::MakeFakeStream(this, params);
46 }
47
MakeLinearInputStream(const AudioParameters & params,const std::string & device_id,const LogCallback & log_callback)48 AudioInputStream* FakeAudioManager::MakeLinearInputStream(
49 const AudioParameters& params,
50 const std::string& device_id,
51 const LogCallback& log_callback) {
52 return FakeAudioInputStream::MakeFakeStream(this, params);
53 }
54
MakeLowLatencyInputStream(const AudioParameters & params,const std::string & device_id,const LogCallback & log_callback)55 AudioInputStream* FakeAudioManager::MakeLowLatencyInputStream(
56 const AudioParameters& params,
57 const std::string& device_id,
58 const LogCallback& log_callback) {
59 return FakeAudioInputStream::MakeFakeStream(this, params);
60 }
61
GetPreferredOutputStreamParameters(const std::string & output_device_id,const AudioParameters & input_params)62 AudioParameters FakeAudioManager::GetPreferredOutputStreamParameters(
63 const std::string& output_device_id,
64 const AudioParameters& input_params) {
65 static const int kDefaultOutputBufferSize = 2048;
66 static const int kDefaultSampleRate = 48000;
67 ChannelLayout channel_layout = CHANNEL_LAYOUT_STEREO;
68 int sample_rate = kDefaultSampleRate;
69 int buffer_size = kDefaultOutputBufferSize;
70 if (input_params.IsValid()) {
71 sample_rate = input_params.sample_rate();
72 channel_layout = input_params.channel_layout();
73 buffer_size = std::min(input_params.frames_per_buffer(), buffer_size);
74 }
75
76 return AudioParameters(AudioParameters::AUDIO_PCM_LOW_LATENCY, channel_layout,
77 sample_rate, buffer_size);
78 }
79
GetInputStreamParameters(const std::string & device_id)80 AudioParameters FakeAudioManager::GetInputStreamParameters(
81 const std::string& device_id) {
82 return AudioParameters(AudioParameters::AUDIO_PCM_LOW_LATENCY,
83 CHANNEL_LAYOUT_STEREO, kDefaultSampleRate,
84 kDefaultInputBufferSize);
85 }
86
87 } // namespace media
88