liveMedia/MediaSession.cpp File Reference

#include "liveMedia.hh"
#include "Locale.hh"
#include "GroupsockHelper.hh"
#include <ctype.h>

Include dependency graph for MediaSession.cpp:

Go to the source code of this file.

Functions
static char *	parseCLine (char const *sdpLine)
static Boolean	parseRangeAttribute (char const *sdpLine, double &startTime, double &endTime)
static Boolean	parseRangeAttribute (char const *sdpLine, char *&absStartTime, char *&absEndTime)
static Boolean	parseSourceFilterAttribute (char const *sdpLine, struct in_addr &sourceAddr)
Variables
static Boolean const	honorSDPPortChoice = True

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Function Documentation

static char* parseCLine

(

char const *

sdpLine

)

[static]

Definition at line 279 of file MediaSession.cpp.

References NULL, strDup(), and strDupSize().

Referenced by MediaSubsession::parseSDPLine_c(), and MediaSession::parseSDPLine_c().

                                             {
  char* resultStr = NULL;
  char* buffer = strDupSize(sdpLine); // ensures we have enough space
  if (sscanf(sdpLine, "c=IN IP4 %[^/\r\n]", buffer) == 1) {
    // Later, handle the optional /<ttl> and /<numAddresses> #####
    resultStr = strDup(buffer);
  }
  delete[] buffer;

  return resultStr;
}

static Boolean parseRangeAttribute	(	char const *	sdpLine,
		char *&	absStartTime,
		char *&	absEndTime
	)			[static]

Definition at line 366 of file MediaSession.cpp.

References False, and True.

                                                                                                {
  size_t len = strlen(sdpLine) + 1;
  char* as = new char[len];
  char* ae = new char[len];
  int sscanfResult = sscanf(sdpLine, "a=range: clock = %[^-\r\n]-%[^\r\n]", as, ae);
  if (sscanfResult == 2) {
    absStartTime = as;
    absEndTime = ae;
  } else if (sscanfResult == 1) {
    absStartTime = as;
    delete[] ae;
  } else {
    delete[] as; delete[] ae;
    return False;
  }

  return True;
}

static Boolean parseRangeAttribute	(	char const *	sdpLine,
		double &	startTime,
		double &	endTime
	)			[static]

Definition at line 362 of file MediaSession.cpp.

Referenced by MediaSubsession::parseSDPAttribute_range(), and MediaSession::parseSDPAttribute_range().

                                                                                            {
  return sscanf(sdpLine, "a=range: npt = %lg - %lg", &startTime, &endTime) == 2;
}

static Boolean parseSourceFilterAttribute	(	char const *	sdpLine,
		struct in_addr &	sourceAddr
	)			[static]

Definition at line 407 of file MediaSession.cpp.

References NetAddress::data(), False, NetAddressList::firstAddress(), NetAddressList::numAddresses(), strDupSize(), and True.

Referenced by MediaSubsession::parseSDPAttribute_source_filter(), and MediaSession::parseSDPAttribute_source_filter().

                                                                      {
  // Check for a "a=source-filter:incl IN IP4 <something> <source>" line.
  // Note: At present, we don't check that <something> really matches
  // one of our multicast addresses.  We also don't support more than
  // one <source> #####
  Boolean result = False; // until we succeed
  char* sourceName = strDupSize(sdpLine); // ensures we have enough space
  do {
    if (sscanf(sdpLine, "a=source-filter: incl IN IP4 %*s %s",
               sourceName) != 1) break;

    // Now, convert this name to an address, if we can:
    NetAddressList addresses(sourceName);
    if (addresses.numAddresses() == 0) break;

    netAddressBits sourceAddrBits
      = *(netAddressBits*)(addresses.firstAddress()->data());
    if (sourceAddrBits == 0) break;

    sourceAddr.s_addr = sourceAddrBits;
    result = True;
  } while (0);

  delete[] sourceName;
  return result;
}

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Variable Documentation

Boolean const honorSDPPortChoice = True [static]

Definition at line 646 of file MediaSession.cpp.

Referenced by MediaSubsession::initiate().

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