content/renderer/media/rtc_data_channel_handler.h

   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
  15 namespace 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.
  23 class 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_