1 // Copyright (c) 2019 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 "content/browser/speech/tts_platform_impl.h"
6
7 #include "base/no_destructor.h"
8
9 namespace content {
10
11 // Dummy implementation to prevent a browser crash, see crbug.com/1019511
12 // TODO(crbug.com/1019819): Provide an implementation for Fuchsia.
13 class TtsPlatformImplFuchsia : public TtsPlatformImpl {
14 public:
15 TtsPlatformImplFuchsia() = default;
16 TtsPlatformImplFuchsia(const TtsPlatformImplFuchsia&) = delete;
17 TtsPlatformImplFuchsia& operator=(const TtsPlatformImplFuchsia&) = delete;
18
19 // TtsPlatform implementation.
PlatformImplSupported()20 bool PlatformImplSupported() override { return false; }
PlatformImplInitialized()21 bool PlatformImplInitialized() override { return false; }
Speak(int utterance_id,const std::string & utterance,const std::string & lang,const VoiceData & voice,const UtteranceContinuousParameters & params,base::OnceCallback<void (bool)> on_speak_finished)22 void Speak(int utterance_id,
23 const std::string& utterance,
24 const std::string& lang,
25 const VoiceData& voice,
26 const UtteranceContinuousParameters& params,
27 base::OnceCallback<void(bool)> on_speak_finished) override {
28 std::move(on_speak_finished).Run(false);
29 }
StopSpeaking()30 bool StopSpeaking() override { return false; }
IsSpeaking()31 bool IsSpeaking() override { return false; }
GetVoices(std::vector<VoiceData> * out_voices)32 void GetVoices(std::vector<VoiceData>* out_voices) override {}
Pause()33 void Pause() override {}
Resume()34 void Resume() override {}
35
36 // Get the single instance of this class.
GetInstance()37 static TtsPlatformImplFuchsia* GetInstance() {
38 static base::NoDestructor<TtsPlatformImplFuchsia> tts_platform;
39 return tts_platform.get();
40 }
41 };
42
43 // static
GetInstance()44 TtsPlatformImpl* TtsPlatformImpl::GetInstance() {
45 return TtsPlatformImplFuchsia::GetInstance();
46 }
47
48 } // namespace content
49