RTCDTMFSender.h - mozsearch

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/* 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 _RTCDTMFSender_h_

#define _RTCDTMFSender_h_

#include "MediaEventSource.h"

#include "mozilla/DOMEventTargetHelper.h"

#include "mozilla/RefPtr.h"

#include "js/RootingAPI.h"

#include "nsITimer.h"

class nsPIDOMWindowInner;

class nsITimer;

namespace mozilla {

class AudioSessionConduit;

struct DtmfEvent {

  DtmfEvent(int aPayloadType, int aPayloadFrequency, int aEventCode,

            int aLengthMs)

      : mPayloadType(aPayloadType),

        mPayloadFrequency(aPayloadFrequency),

        mEventCode(aEventCode),

        mLengthMs(aLengthMs) {}

  const int mPayloadType;

  const int mPayloadFrequency;

  const int mEventCode;

  const int mLengthMs;

};

namespace dom {

class RTCRtpTransceiver;

class RTCDTMFSender : public DOMEventTargetHelper,

                      public nsITimerCallback,

                      public nsINamed {

 public:

  RTCDTMFSender(nsPIDOMWindowInner* aWindow, RTCRtpTransceiver* aTransceiver);

  // nsISupports

  NS_DECL_NSITIMERCALLBACK

  NS_DECL_NSINAMED

  NS_DECL_ISUPPORTS_INHERITED

  NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(RTCDTMFSender, DOMEventTargetHelper)

  // webidl

  JSObject* WrapObject(JSContext* aCx,

                       JS::Handle<JSObject*> aGivenProto) override;

  void SetPayloadType(int32_t aPayloadType, int32_t aPayloadFrequency);

  bool CanInsertDTMF() const;

  void InsertDTMF(const nsAString& aTones, uint32_t aDuration,

                  uint32_t aInterToneGap, ErrorResult& aRv);

  void GetToneBuffer(nsAString& aOutToneBuffer);

  IMPL_EVENT_HANDLER(tonechange)

  void StopPlayout();

  MediaEventSource<DtmfEvent>& OnDtmfEvent() { return mDtmfEvent; }

 private:

  virtual ~RTCDTMFSender() = default;

  void StartPlayout(uint32_t aDelay);

  RefPtr<RTCRtpTransceiver> mTransceiver;

  MediaEventProducer<DtmfEvent> mDtmfEvent;

  Maybe<int32_t> mPayloadType;

  Maybe<int32_t> mPayloadFrequency;

  nsString mToneBuffer;

  uint32_t mDuration = 0;

  uint32_t mInterToneGap = 0;

  nsCOMPtr<nsITimer> mSendTimer;

};

}  // namespace dom

}  // namespace mozilla

#endif  // _RTCDTMFSender_h_