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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: Rebase Created 8 years, 8 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 #include "chrome/browser/chromeos/dbus/dbus_client_implementation_type.h"
13
14 namespace dbus {
15 class Bus;
16 }
17
18 namespace chromeos {
19
20 // SpeechSynthesizerClient is used to communicate with the speech synthesizer.
21 // All method should be called from the origin thread (UI thread) which
22 // initializes the DBusThreadManager instance.
23 class SpeechSynthesizerClient {
24 public:
25 // A callback function called when the result of IsSpeaking is ready.
26 // The argument indicates if the speech synthesizer is speaking or not.
27 typedef base::Callback<void(bool)> IsSpeakingCallback;
28
29 virtual ~SpeechSynthesizerClient();
30
31 // Speaks the specified text with properties.
32 // Use the constants below for properties.
33 // An example of |properties|: "rate=1.0 pitch=1.0"
34 virtual void Speak(const std::string& text,
35 const std::string& properties) = 0;
36
37 // Stops speaking the current utterance.
38 virtual void StopSpeaking() = 0;
39
40 // Checks if the engine is currently speaking.
41 // |callback| will be called on the origin thread later with the result.
42 virtual void IsSpeaking(const IsSpeakingCallback& callback) = 0;
43
44 // Factory function, creates a new instance and returns ownership.
45 // For normal usage, access the singleton via DBusThreadManager::Get().
46 static SpeechSynthesizerClient* Create(DBusClientImplementationType type,
47 dbus::Bus* bus);
48
49 // Constants to be used with the properties argument to Speak.
50 static const char kSpeechPropertyLocale[];
51 static const char kSpeechPropertyGender[];
52 static const char kSpeechPropertyRate[];
53 static const char kSpeechPropertyPitch[];
54 static const char kSpeechPropertyVolume[];
55 static const char kSpeechPropertyEquals[];
56 static const char kSpeechPropertyDelimiter[];
57
58 protected:
59 // Create() should be used instead.
60 SpeechSynthesizerClient();
61
62 private:
63 DISALLOW_COPY_AND_ASSIGN(SpeechSynthesizerClient);
64 };
65
66 } // namespace chromeos
67
68 #endif // CHROME_BROWSER_CHROMEOS_DBUS_SPEECH_SYNTHESIZER_CLIENT_H_
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