darwininjector.hh

流媒体传输协议的实现代码,非常有用.可以支持rtsp mms等流媒体传输协议

/**********
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the terms of the GNU Lesser General Public License as published by the
Free Software Foundation; either version 2.1 of the License, or (at your
option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)

This library is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
more details.

You should have received a copy of the GNU Lesser General Public License
along with this library; if not, write to the Free Software Foundation, Inc.,
59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
**********/
// "liveMedia"
// Copyright (c) 1996-2004 Live Networks, Inc.  All rights reserved.
// An object that redirects one or more RTP/RTCP streams - forming a single
// multimedia session - into a 'Darwin Streaming Server' (for subsequent
// reflection to potentially arbitrarily many remote RTSP clients).
// C++ header

#ifndef _DARWIN_INJECTOR_HH
#define _DARWIN_INJECTOR_HH

#ifndef _RTSP_CLIENT_HH
#include <RTSPClient.hh>
#endif

#ifndef _RTCP_HH
#include <RTCP.hh>
#endif

/*
To use a "DarwinInjector":
  1/ Create RTP sinks and RTCP instances for each audio or video subsession.
       Note: These can use 0.0.0.0 for the address, and 0 for the port number,
       of each 'groupsock')
  2/ Call "addStream()" for each.
  3/ Call "setDestination()" to specify the remote Darwin Streaming Server.
     Note: You must have 'write' permission on the Darwin Streaming Server.
       This can be set up using a "qtaccess" file in the server's 'movies'
       directory.  For example, the following "qtaccess" file allows anyone to
       play streams from the server, but allows only valid users to
       inject streams *into* the server:
           <Limit WRITE>
           require valid-user
           </Limit>
           require any-user
     Use the "remoteUserName" and "remotePassword" parameters to
     "setDestination()", as appropriate. 
  4/ Call "startPlaying" on each RTP sink (from the corresponding 'source'). 
*/

class SubstreamDescriptor; // forward

class DarwinInjector: public Medium {
public:
  static DarwinInjector* createNew(UsageEnvironment& env,
				   char const* applicationName = NULL,
				   int verbosityLevel = 0);

  static Boolean lookupByName(UsageEnvironment& env, char const* name,
			      DarwinInjector*& result);

  void addStream(RTPSink* rtpSink, RTCPInstance* rtcpInstance);

  Boolean setDestination(char const* remoteRTSPServerNameOrAddress, 
			 char const* remoteFileName,
			 char const* sessionName = "",
			 char const* sessionInfo = "",
			 portNumBits remoteRTSPServerPortNumber = 554,
			 char const* remoteUserName = "",
			 char const* remotePassword = "",
			 char const* sessionAuthor = "",
			 char const* sessionCopyright = "");

private: // redefined virtual functions
  virtual Boolean isDarwinInjector() const;

private:
  DarwinInjector(UsageEnvironment& env,
		 char const* applicationName, int verbosityLevel);
      // called only by createNew()

  virtual ~DarwinInjector();

private:
  char const* fApplicationName;
  int fVerbosityLevel;
  RTSPClient* fRTSPClient;
  unsigned fSubstreamSDPSizes;
  SubstreamDescriptor* fHeadSubstream;
  SubstreamDescriptor* fTailSubstream;
};

#endif