1// Copyright (c) 2012 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_DATA_CHANNEL_HANDLER_H_
6#define CONTENT_RENDERER_MEDIA_RTC_DATA_CHANNEL_HANDLER_H_
7
8#include "base/memory/ref_counted.h"
9#include "base/threading/non_thread_safe.h"
10#include "content/common/content_export.h"
11#include "third_party/libjingle/source/talk/app/webrtc/peerconnectioninterface.h"
12#include "third_party/WebKit/public/platform/WebRTCDataChannelHandler.h"
13#include "third_party/WebKit/public/platform/WebRTCDataChannelHandlerClient.h"
14
15namespace content {
16
17// RtcDataChannelHandler is a delegate for the RTC PeerConnection DataChannel
18// API messages going between WebKit and native PeerConnection DataChannels in
19// libjingle. Instances of this class are owned by WebKit.
20// WebKit call all of these methods on the main render thread.
21// Callbacks to the webrtc::DataChannelObserver implementation also occur on
22// the main render thread.
23class CONTENT_EXPORT RtcDataChannelHandler
24    : NON_EXPORTED_BASE(public blink::WebRTCDataChannelHandler),
25      NON_EXPORTED_BASE(public webrtc::DataChannelObserver),
26      NON_EXPORTED_BASE(public base::NonThreadSafe) {
27 public:
28  explicit RtcDataChannelHandler(webrtc::DataChannelInterface* channel);
29  virtual ~RtcDataChannelHandler();
30
31  // blink::WebRTCDataChannelHandler implementation.
32  virtual void setClient(
33      blink::WebRTCDataChannelHandlerClient* client) OVERRIDE;
34  virtual blink::WebString label() OVERRIDE;
35  virtual bool isReliable() OVERRIDE;
36  virtual bool ordered() const OVERRIDE;
37  virtual unsigned short maxRetransmitTime() const OVERRIDE;
38  virtual unsigned short maxRetransmits() const OVERRIDE;
39  virtual blink::WebString protocol() const OVERRIDE;
40  virtual bool negotiated() const OVERRIDE;
41  virtual unsigned short id() const OVERRIDE;
42  virtual unsigned long bufferedAmount() OVERRIDE;
43  virtual bool sendStringData(const blink::WebString& data) OVERRIDE;
44  virtual bool sendRawData(const char* data, size_t length) OVERRIDE;
45  virtual void close() OVERRIDE;
46
47  // webrtc::DataChannelObserver implementation.
48  virtual void OnStateChange() OVERRIDE;
49  virtual void OnMessage(const webrtc::DataBuffer& buffer) OVERRIDE;
50
51 private:
52  void RecordMessageSent(size_t num_bytes);
53
54  scoped_refptr<webrtc::DataChannelInterface> channel_;
55  blink::WebRTCDataChannelHandlerClient* webkit_client_;
56};
57
58}  // namespace content
59
60#endif  // CONTENT_RENDERER_MEDIA_RTC_DATA_CHANNEL_HANDLER_H_
61