Move talk/session/media -> webrtc/pc

talk/session/media/rtcpmuxfilter.h

-/*
- * libjingle
- * Copyright 2004 Google Inc.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- *  1. Redistributions of source code must retain the above copyright notice,
- *     this list of conditions and the following disclaimer.
- *  2. Redistributions in binary form must reproduce the above copyright notice,
- *     this list of conditions and the following disclaimer in the documentation
- *     and/or other materials provided with the distribution.
- *  3. The name of the author may not be used to endorse or promote products
- *     derived from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
- * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
- * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
- * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
- * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
- * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
- * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#ifndef TALK_SESSION_MEDIA_RTCPMUXFILTER_H_
-#define TALK_SESSION_MEDIA_RTCPMUXFILTER_H_
-
-#include "webrtc/base/basictypes.h"
-#include "webrtc/p2p/base/sessiondescription.h"
-
-namespace cricket {
-
-// RTCP Muxer, as defined in RFC 5761 (http://tools.ietf.org/html/rfc5761)
-class RtcpMuxFilter {
- public:
-  RtcpMuxFilter();
-
-  // Whether the filter is active, i.e. has RTCP mux been properly negotiated.
-  bool IsActive() const;
-
-  // Make the filter active, regardless of the current state.
-  void SetActive();
-
-  // Specifies whether the offer indicates the use of RTCP mux.
-  bool SetOffer(bool offer_enable, ContentSource src);
-
-  // Specifies whether the provisional answer indicates the use of RTCP mux.
-  bool SetProvisionalAnswer(bool answer_enable, ContentSource src);
-
-  // Specifies whether the answer indicates the use of RTCP mux.
-  bool SetAnswer(bool answer_enable, ContentSource src);
-
-  // Determines whether the specified packet is RTCP.
-  bool DemuxRtcp(const char* data, int len);
-
- private:
-  bool ExpectOffer(bool offer_enable, ContentSource source);
-  bool ExpectAnswer(ContentSource source);
-  enum State {
-    // RTCP mux filter unused.
-    ST_INIT,
-    // Offer with RTCP mux enabled received.
-    // RTCP mux filter is not active.
-    ST_RECEIVEDOFFER,
-    // Offer with RTCP mux enabled sent.
-    // RTCP mux filter can demux incoming packets but is not active.
-    ST_SENTOFFER,
-    // RTCP mux filter is active but the sent answer is only provisional.
-    // When the final answer is set, the state transitions to ST_ACTIVE or
-    // ST_INIT.
-    ST_SENTPRANSWER,
-    // RTCP mux filter is active but the received answer is only provisional.
-    // When the final answer is set, the state transitions to ST_ACTIVE or
-    // ST_INIT.
-    ST_RECEIVEDPRANSWER,
-    // Offer and answer set, RTCP mux enabled. It is not possible to de-activate
-    // the filter.
-    ST_ACTIVE
-  };
-  State state_;
-  bool offer_enable_;
-};
-
-}  // namespace cricket
-
-#endif  // TALK_SESSION_MEDIA_RTCPMUXFILTER_H_