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      1 /*
      2  * Copyright (C) 2013 Google Inc. All rights reserved.
      3  *
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions
      6  * are met:
      7  * 1. Redistributions of source code must retain the above copyright
      8  *    notice, this list of conditions and the following disclaimer.
      9  * 2. Redistributions in binary form must reproduce the above copyright
     10  *    notice, this list of conditions and the following disclaimer in the
     11  *    documentation and/or other materials provided with the distribution.
     12  *
     13  * THIS SOFTWARE IS PROVIDED BY GOOGLE INC. ``AS IS'' AND ANY
     14  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     16  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL GOOGLE INC. OR
     17  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
     18  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     19  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
     20  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
     21  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     23  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     24  */
     25 
     26 #ifndef RTCDTMFSender_h
     27 #define RTCDTMFSender_h
     28 
     29 #include "core/dom/ActiveDOMObject.h"
     30 #include "modules/EventTargetModules.h"
     31 #include "platform/Timer.h"
     32 #include "public/platform/WebRTCDTMFSenderHandlerClient.h"
     33 
     34 namespace blink {
     35 
     36 class ExceptionState;
     37 class MediaStreamTrack;
     38 class WebRTCDTMFSenderHandler;
     39 class WebRTCPeerConnectionHandler;
     40 
     41 class RTCDTMFSender FINAL
     42     : public RefCountedGarbageCollectedWillBeGarbageCollectedFinalized<RTCDTMFSender>
     43     , public EventTargetWithInlineData
     44     , public WebRTCDTMFSenderHandlerClient
     45     , public ActiveDOMObject {
     46     DEFINE_EVENT_TARGET_REFCOUNTING_WILL_BE_REMOVED(RefCountedGarbageCollectedWillBeGarbageCollectedFinalized<RTCDTMFSender>);
     47     DEFINE_WRAPPERTYPEINFO();
     48     WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(RTCDTMFSender);
     49 public:
     50     static RTCDTMFSender* create(ExecutionContext*, WebRTCPeerConnectionHandler*, MediaStreamTrack*, ExceptionState&);
     51     virtual ~RTCDTMFSender();
     52 
     53     bool canInsertDTMF() const;
     54     MediaStreamTrack* track() const;
     55     String toneBuffer() const;
     56     long duration() const { return m_duration; }
     57     long interToneGap() const { return m_interToneGap; }
     58 
     59     void insertDTMF(const String& tones, ExceptionState&);
     60     void insertDTMF(const String& tones, long duration, ExceptionState&);
     61     void insertDTMF(const String& tones, long duration, long interToneGap, ExceptionState&);
     62 
     63     DEFINE_ATTRIBUTE_EVENT_LISTENER(tonechange);
     64 
     65     // EventTarget
     66     virtual const AtomicString& interfaceName() const OVERRIDE;
     67     virtual ExecutionContext* executionContext() const OVERRIDE;
     68 
     69     // ActiveDOMObject
     70     virtual void stop() OVERRIDE;
     71 
     72     virtual void trace(Visitor*) OVERRIDE;
     73 
     74 private:
     75     RTCDTMFSender(ExecutionContext*, MediaStreamTrack*, PassOwnPtr<WebRTCDTMFSenderHandler>);
     76 
     77     void scheduleDispatchEvent(PassRefPtrWillBeRawPtr<Event>);
     78     void scheduledEventTimerFired(Timer<RTCDTMFSender>*);
     79 
     80     // WebRTCDTMFSenderHandlerClient
     81     virtual void didPlayTone(const WebString&) OVERRIDE;
     82 
     83     Member<MediaStreamTrack> m_track;
     84     long m_duration;
     85     long m_interToneGap;
     86 
     87     OwnPtr<WebRTCDTMFSenderHandler> m_handler;
     88 
     89     bool m_stopped;
     90 
     91     Timer<RTCDTMFSender> m_scheduledEventTimer;
     92     WillBeHeapVector<RefPtrWillBeMember<Event> > m_scheduledEvents;
     93 };
     94 
     95 } // namespace blink
     96 
     97 #endif // RTCDTMFSender_h
     98