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// Copyright 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/search/hotword_service_factory.h"
#include "base/command_line.h"
#include "base/prefs/pref_service.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/browser/search/hotword_service.h"
#include "chrome/common/chrome_switches.h"
#include "chrome/common/pref_names.h"
#include "components/keyed_service/content/browser_context_dependency_manager.h"
#include "components/pref_registry/pref_registry_syncable.h"
#include "content/public/browser/browser_context.h"
#include "content/public/browser/browser_thread.h"
#if defined(OS_CHROMEOS)
#include "chromeos/audio/cras_audio_handler.h"
#endif
using content::BrowserContext;
using content::BrowserThread;
// static
HotwordService* HotwordServiceFactory::GetForProfile(BrowserContext* context) {
return static_cast<HotwordService*>(
GetInstance()->GetServiceForBrowserContext(context, true));
}
// static
HotwordServiceFactory* HotwordServiceFactory::GetInstance() {
return Singleton<HotwordServiceFactory>::get();
}
// static
bool HotwordServiceFactory::IsServiceAvailable(BrowserContext* context) {
HotwordService* hotword_service = GetForProfile(context);
return hotword_service && hotword_service->IsServiceAvailable();
}
// static
bool HotwordServiceFactory::IsHotwordAllowed(BrowserContext* context) {
HotwordService* hotword_service = GetForProfile(context);
return hotword_service && hotword_service->IsHotwordAllowed();
}
// static
bool HotwordServiceFactory::IsHotwordHardwareAvailable() {
// Temporarily disabling hotword hardware check for M41. Will be
// re-enabled for M42.
#if 0
#if defined(OS_CHROMEOS)
if (chromeos::CrasAudioHandler::IsInitialized()) {
chromeos::AudioDeviceList devices;
chromeos::CrasAudioHandler::Get()->GetAudioDevices(&devices);
for (size_t i = 0; i < devices.size(); ++i) {
if (devices[i].type == chromeos::AUDIO_TYPE_AOKR) {
DCHECK(devices[i].is_input);
return true;
}
}
}
#endif
#endif // 0
base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();
return command_line->HasSwitch(switches::kEnableExperimentalHotwordHardware);
}
// static
int HotwordServiceFactory::GetCurrentError(BrowserContext* context) {
HotwordService* hotword_service = GetForProfile(context);
if (!hotword_service)
return 0;
return hotword_service->error_message();
}
// static
bool HotwordServiceFactory::IsMicrophoneAvailable() {
return GetInstance()->microphone_available();
}
// static
bool HotwordServiceFactory::IsAudioDeviceStateUpdated() {
return GetInstance()->audio_device_state_updated();
}
HotwordServiceFactory::HotwordServiceFactory()
: BrowserContextKeyedServiceFactory(
"HotwordService",
BrowserContextDependencyManager::GetInstance()),
microphone_available_(false),
audio_device_state_updated_(false) {
// No dependencies.
// Register with the device observer list to update the microphone
// availability.
BrowserThread::PostTask(
BrowserThread::UI, FROM_HERE,
base::Bind(&HotwordServiceFactory::InitializeMicrophoneObserver,
base::Unretained(this)));
}
HotwordServiceFactory::~HotwordServiceFactory() {
}
void HotwordServiceFactory::InitializeMicrophoneObserver() {
MediaCaptureDevicesDispatcher::GetInstance()->AddObserver(this);
}
void HotwordServiceFactory::OnUpdateAudioDevices(
const content::MediaStreamDevices& devices) {
microphone_available_ = !devices.empty();
audio_device_state_updated_ = true;
}
void HotwordServiceFactory::UpdateMicrophoneState() {
// In order to trigger the monitor, just call getAudioCaptureDevices.
content::MediaStreamDevices devices =
MediaCaptureDevicesDispatcher::GetInstance()->GetAudioCaptureDevices();
}
void HotwordServiceFactory::RegisterProfilePrefs(
user_prefs::PrefRegistrySyncable* prefs) {
prefs->RegisterBooleanPref(prefs::kHotwordAudioLoggingEnabled,
false,
user_prefs::PrefRegistrySyncable::SYNCABLE_PREF);
prefs->RegisterStringPref(prefs::kHotwordPreviousLanguage,
std::string(),
user_prefs::PrefRegistrySyncable::SYNCABLE_PREF);
// Per-device settings (do not sync).
prefs->RegisterBooleanPref(prefs::kHotwordSearchEnabled,
false,
user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF);
prefs->RegisterBooleanPref(prefs::kHotwordAlwaysOnSearchEnabled,
false,
user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF);
prefs->RegisterBooleanPref(prefs::kHotwordAlwaysOnNotificationSeen,
false,
user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF);
}
KeyedService* HotwordServiceFactory::BuildServiceInstanceFor(
BrowserContext* context) const {
return new HotwordService(Profile::FromBrowserContext(context));
}
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