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// Copyright (c) 2012 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_SPEECH_CHROME_SPEECH_RECOGNITION_MANAGER_DELEGATE_H_
#define CHROME_BROWSER_SPEECH_CHROME_SPEECH_RECOGNITION_MANAGER_DELEGATE_H_
#include "base/compiler_specific.h"
#include "base/memory/ref_counted.h"
#include "content/public/browser/speech_recognition_event_listener.h"
#include "content/public/browser/speech_recognition_manager_delegate.h"
#include "content/public/browser/speech_recognition_session_config.h"
namespace speech {
// This is Chrome's implementation of the SpeechRecognitionManagerDelegate
// interface.
class ChromeSpeechRecognitionManagerDelegate
: public content::SpeechRecognitionManagerDelegate,
public content::SpeechRecognitionEventListener {
public:
ChromeSpeechRecognitionManagerDelegate();
~ChromeSpeechRecognitionManagerDelegate() override;
protected:
// SpeechRecognitionEventListener methods.
void OnRecognitionStart(int session_id) override;
void OnAudioStart(int session_id) override;
void OnEnvironmentEstimationComplete(int session_id) override;
void OnSoundStart(int session_id) override;
void OnSoundEnd(int session_id) override;
void OnAudioEnd(int session_id) override;
void OnRecognitionEnd(int session_id) override;
void OnRecognitionResults(
int session_id,
const content::SpeechRecognitionResults& result) override;
void OnRecognitionError(
int session_id,
const content::SpeechRecognitionError& error) override;
void OnAudioLevelsChange(int session_id,
float volume,
float noise_volume) override;
// SpeechRecognitionManagerDelegate methods.
void GetDiagnosticInformation(bool* can_report_metrics,
std::string* hardware_info) override;
void CheckRecognitionIsAllowed(
int session_id,
base::Callback<void(bool ask_user, bool is_allowed)> callback) override;
content::SpeechRecognitionEventListener* GetEventListener() override;
bool FilterProfanities(int render_process_id) override;
// Callback called by |tab_watcher_| on the IO thread to signal tab closure.
virtual void TabClosedCallback(int render_process_id, int render_view_id);
private:
class OptionalRequestInfo;
class TabWatcher;
// Checks for VIEW_TYPE_TAB_CONTENTS host in the UI thread and notifies back
// the result in the IO thread through |callback|.
static void CheckRenderViewType(
base::Callback<void(bool ask_user, bool is_allowed)> callback,
int render_process_id,
int render_view_id);
scoped_refptr<OptionalRequestInfo> optional_request_info_;
scoped_refptr<TabWatcher> tab_watcher_;
DISALLOW_COPY_AND_ASSIGN(ChromeSpeechRecognitionManagerDelegate);
};
} // namespace speech
#endif // CHROME_BROWSER_SPEECH_CHROME_SPEECH_RECOGNITION_MANAGER_DELEGATE_H_
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