RtspRangeHdr.hxx
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上传日期:2013-07-25
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- #ifndef RtspRangeHdr_hxx
- #define RtspRangeHdr_hxx
- /* ====================================================================
- * The Vovida Software License, Version 1.0
- *
- * Copyright (c) 2000 Vovida Networks, Inc. All rights reserved.
- *
- * 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 names "VOCAL", "Vovida Open Communication Application Library",
- * and "Vovida Open Communication Application Library (VOCAL)" must
- * not be used to endorse or promote products derived from this
- * software without prior written permission. For written
- * permission, please contact vocal@vovida.org.
- *
- * 4. Products derived from this software may not be called "VOCAL", nor
- * may "VOCAL" appear in their name, without prior written
- * permission of Vovida Networks, Inc.
- *
- * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESSED OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
- * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, TITLE AND
- * NON-INFRINGEMENT ARE DISCLAIMED. IN NO EVENT SHALL VOVIDA
- * NETWORKS, INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT DAMAGES
- * IN EXCESS OF 281421,000, NOR FOR ANY 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.
- *
- * ====================================================================
- *
- * This software consists of voluntary contributions made by Vovida
- * Networks, Inc. and many individuals on behalf of Vovida Networks,
- * Inc. For more information on Vovida Networks, Inc., please see
- * <http://www.vovida.org/>.
- *
- */
- static const char* const RtspRangeHdr_hxx_Version =
- "$Id: RtspRangeHdr.hxx,v 1.22 2001/06/27 02:21:40 wjin Exp $";
- #include <stdio.h>
- #include "CharDataParser.hxx"
- #include "Data.hxx"
- /** Range Grammer
- Range = "Range" ":" 1#ranges-specifier
- [ ";" "time" "=" utc-time ]
- ranges-specifier = npt-range | utc-range | smpte-range
- npt-range = ( npt-time "-" [ npt-time ] ) | ( "-" npt-time )
- npt-time = "now" | npt-sec | npt-hhmmss
- npt-sec = 1*DIGIT [ "." *DIGIT ]
- npt-hhmmss = npt-hh ":" npt-mm ":" npt-ss [ "." *DIGIT ]
- npt-hh = 1*DIGIT ; any positive number
- npt-mm = 1*2DIGIT ; 0-59
- npt-ss = 1*2DIGIT ; 0-59
- Examples:
- npt=123.45-125
- npt=12:05:35.3-
- npt=now-
- note: we currently only support npt-range
- */
- class RtspRangeHdr
- {
- public:
- /** */
- RtspRangeHdr();
- /** */
- RtspRangeHdr(double startTime, double endTime);
- /** */
- RtspRangeHdr(const RtspRangeHdr& x);
- /** */
- ~RtspRangeHdr() {}
- /** */
- RtspRangeHdr& operator= (const RtspRangeHdr& x);
-
- /** */
- double getStartTime() const { return myStartTime; }
- /** */
- void setStartTime(const double time) { myStartTime = time; }
- /** */
- double getEndTime() const { return myEndTime; }
- /** */
- void setEndTime(const double time) { myEndTime = time; }
- /** It parses Range Header and assign myStartTime and myEndTime */
- void parseRangeHeader(CharDataParser& parser);
- // throw (RtspBadDataException&);
- /** It does the same thing by taking Data as input */
- void parseRange(const Data& rangeData);
- /** to convert double to string */
- void doubleToStr(double time, char* buf)
- {
- sprintf(buf, "%3.3f", time);
- }
- /** it encodes npt time and return the data of a range */
- Data encodeNPT();
- /** it encodes Range hdr */
- Data encode();
- /** time in ms */
- long getStartTime()
- { return (long)(myStartTime * 1000.0); }
- /** time in ms */
- long getEndTime()
- { return (long)(myEndTime * 1000.0); }
- private:
- /** only support npt and second and fractional format for now
- TODO support smpte, utc and hhmmss for npt
- */
- double myStartTime;
- /** */
- double myEndTime;
- // TODO support time= parameter
- };
- /* Local Variables: */
- /* c-file-style: "stroustrup" */
- /* indent-tabs-mode: nil */
- /* c-file-offsets: ((access-label . -) (inclass . ++)) */
- /* c-basic-offset: 4 */
- /* End: */
- #endif