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      1 /*
      2  * libjingle
      3  * Copyright 2012 Google Inc. and Robin Seggelmann
      4  *
      5  * Redistribution and use in source and binary forms, with or without
      6  * modification, are permitted provided that the following conditions are met:
      7  *
      8  *  1. Redistributions of source code must retain the above copyright notice,
      9  *     this list of conditions and the following disclaimer.
     10  *  2. Redistributions in binary form must reproduce the above copyright notice,
     11  *     this list of conditions and the following disclaimer in the documentation
     12  *     and/or other materials provided with the distribution.
     13  *  3. The name of the author may not be used to endorse or promote products
     14  *     derived from this software without specific prior written permission.
     15  *
     16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
     17  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
     18  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
     19  * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     20  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     21  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
     22  * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
     23  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
     24  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
     25  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     26  */
     27 
     28 #ifndef TALK_MEDIA_SCTP_HYBRIDDATAENGINE_H_
     29 #define TALK_MEDIA_SCTP_HYBRIDDATAENGINE_H_
     30 
     31 #include <string>
     32 #include <vector>
     33 
     34 #include "talk/media/base/codec.h"
     35 #include "talk/media/base/mediachannel.h"
     36 #include "talk/media/base/mediaengine.h"
     37 #include "webrtc/base/scoped_ptr.h"
     38 
     39 namespace cricket {
     40 
     41 class HybridDataEngine : public DataEngineInterface {
     42  public:
     43   // Takes ownership.
     44   HybridDataEngine(DataEngineInterface* first,
     45                    DataEngineInterface* second)
     46       : first_(first),
     47         second_(second) {
     48     codecs_ = first_->data_codecs();
     49     codecs_.insert(
     50         codecs_.end(),
     51         second_->data_codecs().begin(),
     52         second_->data_codecs().end());
     53   }
     54 
     55   virtual DataMediaChannel* CreateChannel(DataChannelType data_channel_type) {
     56     DataMediaChannel* channel = NULL;
     57     if (first_) {
     58       channel = first_->CreateChannel(data_channel_type);
     59     }
     60     if (!channel && second_) {
     61       channel = second_->CreateChannel(data_channel_type);
     62     }
     63     return channel;
     64   }
     65 
     66   virtual const std::vector<DataCodec>& data_codecs() { return codecs_; }
     67 
     68  private:
     69   rtc::scoped_ptr<DataEngineInterface> first_;
     70   rtc::scoped_ptr<DataEngineInterface> second_;
     71   std::vector<DataCodec> codecs_;
     72 };
     73 
     74 }  // namespace cricket
     75 
     76 #endif  // TALK_MEDIA_SCTP_HYBRIDDATAENGINE_H_
     77