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
|
// 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.
#ifndef CHROME_BROWSER_SPEECH_TTS_CONTROLLER_DELEGATE_IMPL_H_
#define CHROME_BROWSER_SPEECH_TTS_CONTROLLER_DELEGATE_IMPL_H_
#include "base/gtest_prod_util.h"
#include "base/memory/singleton.h"
#include "base/values.h"
#include "content/public/browser/tts_controller_delegate.h"
class PrefService;
// Singleton class that manages Chrome side logic for TTS and TTS engine
// extension APIs. This is only used on ChromeOS.
class TtsControllerDelegateImpl : public content::TtsControllerDelegate {
public:
// Get the single instance of this class.
static TtsControllerDelegateImpl* GetInstance();
TtsControllerDelegateImpl(const TtsControllerDelegateImpl&) = delete;
TtsControllerDelegateImpl& operator=(const TtsControllerDelegateImpl&) =
delete;
// TtsControllerDelegate overrides.
std::unique_ptr<content::TtsControllerDelegate::PreferredVoiceIds>
GetPreferredVoiceIdsForUtterance(content::TtsUtterance* utterance) override;
void UpdateUtteranceDefaultsFromPrefs(content::TtsUtterance* utterance,
double* rate,
double* pitch,
double* volume) override;
protected:
TtsControllerDelegateImpl();
~TtsControllerDelegateImpl() override;
private:
FRIEND_TEST_ALL_PREFIXES(TtsControllerDelegateImplTest,
TestTtsControllerUtteranceDefaults);
virtual const PrefService* GetPrefService(content::TtsUtterance* utterance);
const base::Value::Dict* GetLangToVoicePref(content::TtsUtterance* utterance);
friend struct base::DefaultSingletonTraits<TtsControllerDelegateImpl>;
};
#endif // CHROME_BROWSER_SPEECH_TTS_CONTROLLER_DELEGATE_IMPL_H_
|
