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      1 /*
      2  * libjingle
      3  * Copyright 2011, Google Inc.
      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_APP_WEBRTC_STREAMCOLLECTION_H_
     29 #define TALK_APP_WEBRTC_STREAMCOLLECTION_H_
     30 
     31 #include <string>
     32 #include <vector>
     33 
     34 #include "talk/app/webrtc/peerconnectioninterface.h"
     35 
     36 namespace webrtc {
     37 
     38 // Implementation of StreamCollection.
     39 class StreamCollection : public StreamCollectionInterface {
     40  public:
     41   static talk_base::scoped_refptr<StreamCollection> Create() {
     42     talk_base::RefCountedObject<StreamCollection>* implementation =
     43          new talk_base::RefCountedObject<StreamCollection>();
     44     return implementation;
     45   }
     46 
     47   static talk_base::scoped_refptr<StreamCollection> Create(
     48       StreamCollection* streams) {
     49     talk_base::RefCountedObject<StreamCollection>* implementation =
     50          new talk_base::RefCountedObject<StreamCollection>(streams);
     51     return implementation;
     52   }
     53 
     54   virtual size_t count() {
     55     return media_streams_.size();
     56   }
     57 
     58   virtual MediaStreamInterface* at(size_t index) {
     59     return media_streams_.at(index);
     60   }
     61 
     62   virtual MediaStreamInterface* find(const std::string& label) {
     63     for (StreamVector::iterator it = media_streams_.begin();
     64          it != media_streams_.end(); ++it) {
     65       if ((*it)->label().compare(label) == 0) {
     66         return (*it);
     67       }
     68     }
     69     return NULL;
     70   }
     71 
     72   virtual MediaStreamTrackInterface* FindAudioTrack(
     73       const std::string& id) {
     74     for (size_t i = 0; i < media_streams_.size(); ++i) {
     75       MediaStreamTrackInterface* track = media_streams_[i]->FindAudioTrack(id);
     76       if (track) {
     77         return track;
     78       }
     79     }
     80     return NULL;
     81   }
     82 
     83   virtual MediaStreamTrackInterface* FindVideoTrack(
     84       const std::string& id) {
     85     for (size_t i = 0; i < media_streams_.size(); ++i) {
     86       MediaStreamTrackInterface* track = media_streams_[i]->FindVideoTrack(id);
     87       if (track) {
     88         return track;
     89       }
     90     }
     91     return NULL;
     92   }
     93 
     94   void AddStream(MediaStreamInterface* stream) {
     95     for (StreamVector::iterator it = media_streams_.begin();
     96          it != media_streams_.end(); ++it) {
     97       if ((*it)->label().compare(stream->label()) == 0)
     98         return;
     99     }
    100     media_streams_.push_back(stream);
    101   }
    102 
    103   void RemoveStream(MediaStreamInterface* remove_stream) {
    104     for (StreamVector::iterator it = media_streams_.begin();
    105          it != media_streams_.end(); ++it) {
    106       if ((*it)->label().compare(remove_stream->label()) == 0) {
    107         media_streams_.erase(it);
    108         break;
    109       }
    110     }
    111   }
    112 
    113  protected:
    114   StreamCollection() {}
    115   explicit StreamCollection(StreamCollection* original)
    116       : media_streams_(original->media_streams_) {
    117   }
    118   typedef std::vector<talk_base::scoped_refptr<MediaStreamInterface> >
    119       StreamVector;
    120   StreamVector media_streams_;
    121 };
    122 
    123 }  // namespace webrtc
    124 
    125 #endif  // TALK_APP_WEBRTC_STREAMCOLLECTION_H_
    126