descriptor_misc.c

来自「DVB MPEG2 system stream 分析, 包含 各個talbe(」· C语言 代码 · 共 60 行

/*
$Id: descriptor_misc.c,v 1.1 2004/01/18 00:30:48 rasc Exp $


 DVBSNOOP

 a dvb sniffer  and mpeg2 stream analyzer tool
 http://dvbsnoop.sourceforge.net/

 (c) 2001-2004   [e-mail] (rasc)



 -- Descriptors  misc. routines, helpers, etc.




$Log: descriptor_misc.c,v $
Revision 1.1  2004/01/18 00:30:48  rasc
no message



*/


#include "dvbsnoop.h"
#include "misc/helper.h"
#include "misc/output.h"




void  out_nl_calc_NPT (int v, unsigned long long npt) 
{
  long sec,usec;

  /*
        system clock frequency  == (90kHz)
	NPT_seconds      = NPT / (System_Clock_Frequency / 300)
	NPT_microseconds = ( (NPT * 1000000) / (System_Clock_Frequency / 300) )
	 		   - (NPT_seconds * 1000000)
   */

  sec = npt / (300);
  usec= ((npt * 10000) / 3) - (sec * 1000000);

  out_nl (v,"  [= %lu.%06lu sec]",sec,usec);
}