content/renderer/media/rtc_dtmf_sender_handler.h

   1 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef CONTENT_RENDERER_MEDIA_RTC_DTMF_SENDER_HANDLER_H_
   6 #define CONTENT_RENDERER_MEDIA_RTC_DTMF_SENDER_HANDLER_H_
   7
   8 #include <string>
   9
  10 #include "base/memory/ref_counted.h"
  11 #include "base/threading/non_thread_safe.h"
  12 #include "content/common/content_export.h"
  13 #include "third_party/WebKit/Source/Platform/chromium/public/WebRTCDTMFSenderHandler.h"
  14 #include "third_party/WebKit/Source/Platform/chromium/public/WebRTCDTMFSenderHandlerClient.h"
  15 #include "third_party/libjingle/source/talk/app/webrtc/dtmfsenderinterface.h"
  16
  17 namespace content {
  18
  19 // RtcDtmfSenderHandler is a delegate for the RTC DTMF Sender API messages
  20 // going between WebKit and native DTMF Sender in libjingle.
  21 // Instances of this class are owned by WebKit.
  22 // WebKit call all of these methods on the main render thread.
  23 // Callbacks to the webrtc::DtmfSenderObserverInterface implementation also
  24 // occur on the main render thread.
  25 class CONTENT_EXPORT RtcDtmfSenderHandler
  26     : NON_EXPORTED_BASE(public WebKit::WebRTCDTMFSenderHandler),
  27       NON_EXPORTED_BASE(public webrtc::DtmfSenderObserverInterface),
  28       NON_EXPORTED_BASE(public base::NonThreadSafe) {
  29  public:
  30   explicit RtcDtmfSenderHandler(webrtc::DtmfSenderInterface* dtmf_sender);
  31   virtual ~RtcDtmfSenderHandler();
  32
  33   // WebKit::WebRTCDTMFSenderHandler implementation.
  34   virtual void setClient(
  35       WebKit::WebRTCDTMFSenderHandlerClient* client) OVERRIDE;
  36   virtual WebKit::WebString currentToneBuffer() OVERRIDE;
  37   virtual bool canInsertDTMF() OVERRIDE;
  38   virtual bool insertDTMF(const WebKit::WebString& tones, long duration,
  39                           long interToneGap) OVERRIDE;
  40
  41   // webrtc::DtmfSenderObserverInterface implementation.
  42   virtual void OnToneChange(const std::string& tone) OVERRIDE;
  43
  44  private:
  45   scoped_refptr<webrtc::DtmfSenderInterface> dtmf_sender_;
  46   WebKit::WebRTCDTMFSenderHandlerClient* webkit_client_;
  47 };
  48
  49 }  // namespace content
  50
  51 #endif  // CONTENT_RENDERER_MEDIA_RTC_DTMF_SENDER_HANDLER_H_
  52