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// Copyright 2014 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.
#ifndef CHROME_BROWSER_CHROMEOS_ACCESSIBILITY_SPEECH_MONITOR_H_
#define CHROME_BROWSER_CHROMEOS_ACCESSIBILITY_SPEECH_MONITOR_H_
#include <deque>
#include "base/memory/ref_counted.h"
#include "chrome/browser/speech/tts_platform.h"
#include "content/public/test/test_utils.h"
namespace chromeos {
// For testing purpose installs itself as the platform speech synthesis engine,
// allowing it to intercept all speech calls, and then provides a method to
// block until the next utterance is spoken.
class SpeechMonitor : public TtsPlatformImpl {
public:
SpeechMonitor();
~SpeechMonitor() override;
// Blocks until the next utterance is spoken, and returns its text.
std::string GetNextUtterance();
// Wait for next utterance and return true if next utterance is ChromeVox
// enabled message.
bool SkipChromeVoxEnabledMessage();
// TtsPlatformImpl implementation.
bool PlatformImplAvailable() override;
bool Speak(int utterance_id,
const std::string& utterance,
const std::string& lang,
const VoiceData& voice,
const UtteranceContinuousParameters& params) override;
bool StopSpeaking() override;
bool IsSpeaking() override;
void GetVoices(std::vector<VoiceData>* out_voices) override;
void Pause() override {}
void Resume() override {}
std::string error() override;
void clear_error() override {}
void set_error(const std::string& error) override {}
void WillSpeakUtteranceWithVoice(const Utterance* utterance,
const VoiceData& voice_data) override;
private:
scoped_refptr<content::MessageLoopRunner> loop_runner_;
std::deque<std::string> utterance_queue_;
DISALLOW_COPY_AND_ASSIGN(SpeechMonitor);
};
} // namespace chromeos
#endif // CHROME_BROWSER_CHROMEOS_ACCESSIBILITY_SPEECH_MONITOR_H_
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