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/public/platform/WebRTCDTMFSenderHandler.h"
14#include "third_party/WebKit/public/platform/WebRTCDTMFSenderHandlerClient.h"
15#include "third_party/libjingle/source/talk/app/webrtc/dtmfsenderinterface.h"
16
17namespace 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.
25class CONTENT_EXPORT RtcDtmfSenderHandler
26    : NON_EXPORTED_BASE(public blink::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  // blink::WebRTCDTMFSenderHandler implementation.
34  virtual void setClient(
35      blink::WebRTCDTMFSenderHandlerClient* client) OVERRIDE;
36  virtual blink::WebString currentToneBuffer() OVERRIDE;
37  virtual bool canInsertDTMF() OVERRIDE;
38  virtual bool insertDTMF(const blink::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  blink::WebRTCDTMFSenderHandlerClient* webkit_client_;
47};
48
49}  // namespace content
50
51#endif  // CONTENT_RENDERER_MEDIA_RTC_DTMF_SENDER_HANDLER_H_
52
53