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Side by Side Diff: chrome/browser/chromeos/dbus/speech_synthesizer_client.h

Issue 9838085: Move files inside chrome/browser/chromeos/dbus to chromeos/dbus (Closed) Base URL: http://git.chromium.org/chromium/src.git@master
Patch Set: _ Created 8 years, 9 months ago
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1 // Copyright (c) 2012 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 #ifndef CHROME_BROWSER_CHROMEOS_DBUS_SPEECH_SYNTHESIZER_CLIENT_H_
6 #define CHROME_BROWSER_CHROMEOS_DBUS_SPEECH_SYNTHESIZER_CLIENT_H_
7 #pragma once
8
9 #include <string>
10
11 #include "base/callback.h"
12
13 namespace dbus {
14 class Bus;
15 }
16
17 namespace chromeos {
18
19 // SpeechSynthesizerClient is used to communicate with the speech synthesizer.
20 // All method should be called from the origin thread (UI thread) which
21 // initializes the DBusThreadManager instance.
22 class SpeechSynthesizerClient {
23 public:
24 // A callback function called when the result of IsSpeaking is ready.
25 // The argument indicates if the speech synthesizer is speaking or not.
26 typedef base::Callback<void(bool)> IsSpeakingCallback;
27
28 virtual ~SpeechSynthesizerClient();
29
30 // Speaks the specified text with properties.
31 // Use the constants below for properties.
32 // An example of |properties|: "rate=1.0 pitch=1.0"
33 virtual void Speak(const std::string& text,
34 const std::string& properties) = 0;
35
36 // Stops speaking the current utterance.
37 virtual void StopSpeaking() = 0;
38
39 // Checks if the engine is currently speaking.
40 // |callback| will be called on the origin thread later with the result.
41 virtual void IsSpeaking(IsSpeakingCallback callback) = 0;
42
43 // Factory function, creates a new instance and returns ownership.
44 // For normal usage, access the singleton via DBusThreadManager::Get().
45 static SpeechSynthesizerClient* Create(dbus::Bus* bus);
46
47 // Constants to be used with the properties argument to Speak.
48 static const char kSpeechPropertyLocale[];
49 static const char kSpeechPropertyGender[];
50 static const char kSpeechPropertyRate[];
51 static const char kSpeechPropertyPitch[];
52 static const char kSpeechPropertyVolume[];
53 static const char kSpeechPropertyEquals[];
54 static const char kSpeechPropertyDelimiter[];
55
56 protected:
57 // Create() should be used instead.
58 SpeechSynthesizerClient();
59
60 private:
61 DISALLOW_COPY_AND_ASSIGN(SpeechSynthesizerClient);
62 };
63
64 } // namespace chromeos
65
66 #endif // CHROME_BROWSER_CHROMEOS_DBUS_SPEECH_SYNTHESIZER_CLIENT_H_
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