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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim:set ts=2 sw=2 sts=2 et cindent: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef mozilla_dom_nsSpeechTask_h
#define mozilla_dom_nsSpeechTask_h
#include "SpeechSynthesisUtterance.h"
#include "AudioChannelAgent.h"
#include "nsISpeechService.h"
#include "nsWeakReference.h"
namespace mozilla {
class SharedBuffer;
namespace dom {
class SpeechSynthesisUtterance;
class SpeechSynthesis;
class nsSpeechTask : public nsISpeechTask,
public nsIAudioChannelAgentCallback,
public nsSupportsWeakReference {
public:
NS_DECL_CYCLE_COLLECTING_ISUPPORTS
NS_DECL_CYCLE_COLLECTION_CLASS_AMBIGUOUS(nsSpeechTask, nsISpeechTask)
NS_DECL_NSISPEECHTASK
NS_DECL_NSIAUDIOCHANNELAGENTCALLBACK
explicit nsSpeechTask(SpeechSynthesisUtterance* aUtterance, bool aIsChrome);
nsSpeechTask(float aVolume, const nsAString& aText, bool aIsChrome);
virtual void Pause();
virtual void Resume();
virtual void Cancel();
virtual void ForceEnd();
void SetSpeechSynthesis(SpeechSynthesis* aSpeechSynthesis);
void Init();
void SetChosenVoiceURI(const nsAString& aUri);
virtual void SetAudioOutputVolume(float aVolume);
void ForceError(float aElapsedTime, uint32_t aCharIndex);
bool IsPreCanceled() { return mPreCanceled; };
bool IsPrePaused() { return mPrePaused; }
bool IsChrome() { return mIsChrome; }
enum { STATE_PENDING, STATE_SPEAKING, STATE_ENDED };
uint32_t GetState() const { return mState; }
bool IsSpeaking() const { return mState == STATE_SPEAKING; }
bool IsPending() const { return mState == STATE_PENDING; }
protected:
virtual ~nsSpeechTask();
nsresult DispatchStartImpl();
virtual nsresult DispatchStartImpl(const nsAString& aUri);
virtual nsresult DispatchEndImpl(float aElapsedTime, uint32_t aCharIndex);
virtual nsresult DispatchPauseImpl(float aElapsedTime, uint32_t aCharIndex);
virtual nsresult DispatchResumeImpl(float aElapsedTime, uint32_t aCharIndex);
virtual nsresult DispatchErrorImpl(float aElapsedTime, uint32_t aCharIndex);
virtual nsresult DispatchBoundaryImpl(const nsAString& aName,
float aElapsedTime, uint32_t aCharIndex,
uint32_t aCharLength, uint8_t argc);
virtual nsresult DispatchMarkImpl(const nsAString& aName, float aElapsedTime,
uint32_t aCharIndex);
RefPtr<SpeechSynthesisUtterance> mUtterance;
float mVolume;
nsString mText;
bool mInited;
bool mPrePaused;
bool mPreCanceled;
private:
void End();
void CreateAudioChannelAgent();
void DestroyAudioChannelAgent();
nsCOMPtr<nsISpeechTaskCallback> mCallback;
RefPtr<mozilla::dom::AudioChannelAgent> mAudioChannelAgent;
RefPtr<SpeechSynthesis> mSpeechSynthesis;
nsString mChosenVoiceURI;
bool mIsChrome;
uint32_t mState;
};
} // namespace dom
} // namespace mozilla
#endif