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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_MEDIA_WEBRTCMEDIAENGINE_H_
     29 #define TALK_MEDIA_WEBRTCMEDIAENGINE_H_
     30 
     31 #include <string>
     32 #include <vector>
     33 
     34 #include "talk/media/base/mediaengine.h"
     35 #include "webrtc/config.h"
     36 
     37 namespace webrtc {
     38 class AudioDeviceModule;
     39 }
     40 namespace cricket {
     41 class WebRtcVideoDecoderFactory;
     42 class WebRtcVideoEncoderFactory;
     43 }
     44 
     45 namespace cricket {
     46 
     47 class WebRtcMediaEngineFactory {
     48  public:
     49   static MediaEngineInterface* Create(
     50       webrtc::AudioDeviceModule* adm,
     51       WebRtcVideoEncoderFactory* encoder_factory,
     52       WebRtcVideoDecoderFactory* decoder_factory);
     53 };
     54 
     55 // Verify that extension IDs are within 1-byte extension range and are not
     56 // overlapping.
     57 bool ValidateRtpExtensions(const std::vector<RtpHeaderExtension>& extensions);
     58 
     59 // Convert cricket::RtpHeaderExtension:s to webrtc::RtpExtension:s, discarding
     60 // any extensions not validated by the 'supported' predicate. Duplicate
     61 // extensions are removed if 'filter_redundant_extensions' is set, and also any
     62 // mutually exclusive extensions (see implementation for details).
     63 std::vector<webrtc::RtpExtension> FilterRtpExtensions(
     64     const std::vector<RtpHeaderExtension>& extensions,
     65     bool (*supported)(const std::string&),
     66     bool filter_redundant_extensions);
     67 
     68 }  // namespace cricket
     69 
     70 #endif  // TALK_MEDIA_WEBRTCMEDIAENGINE_H_
     71