www.pudn.com > lame3(mp3编码程序和资料).zip > mp3rtp.c

#include 
#include 
#include 
#include 
#include "lame.h"
#include "rtp.h"


/*

encode (via LAME) to mp3 with RTP streaming of the output.

Author:  Felix von Leitner 

mp3rtp  ip:port:ttl  [lame encoding options]  infile outfile

example:

arecord -b 16 -s 22050 -w | ./mp3rtp 224.17.23.42:5004:2 -b 56 - /dev/null



*/


struct rtpheader RTPheader;
struct sockaddr_in rtpsi;
int rtpsocket;

void rtp_output(char *mp3buffer,int mp3size)
{
  sendrtp(rtpsocket,&rtpsi,&RTPheader,mp3buffer,mp3size);
  RTPheader.timestamp+=5;
  RTPheader.b.sequence++;
}

void rtp_usage(void) {
    fprintf(stderr,"usage: mp3rtp ip:port:ttl  [encoder options]  \n");
    exit(1);
}



char mp3buffer[LAME_MAXMP3BUFFER];


/************************************************************************
*
* main
*
* PURPOSE:  MPEG-1,2 Layer III encoder with GPSYCHO 
* psychoacoustic model.
*
************************************************************************/


int main(int argc, char **argv)
{

  int i,port,ttl;
  char *tmp,*Arg;
  lame_global_flags gf;
  int iread,imp3;
  FILE *outf;
  short int Buffer[2][1152];

  if(argc<=2) {
    rtp_usage();
    exit(1);
  }

  /* process args */
  Arg = argv[1];
  tmp=strchr(Arg,':');

  if (!tmp) {
    rtp_usage();
    exit(1);
  }
  *tmp++=0;
  port=atoi(tmp);
  if (port<=0) {
    rtp_usage();
    exit(1);
  }
  tmp=strchr(tmp,':');
  if (!tmp) {
    rtp_usage();
    exit(1);
  }
  *tmp++=0;
  ttl=atoi(tmp);
  if (tmp<=0) {
    rtp_usage();
    exit(1);
  }
  rtpsocket=makesocket(Arg,port,ttl,&rtpsi);
  srand(getpid() ^ time(0));
  initrtp(&RTPheader);


  /* initialize encoder */
  lame_init(&gf);

  /* Remove the argumets that are rtp related, and then 
   * parse the command line arguments, setting various flags in the
   * struct pointed to by 'gf'.  If you want to parse your own arguments,
   * or call libmp3lame from a program which uses a GUI to set arguments,
   * skip this call and set the values of interest in the gf struct.  
   * (see lame.h for documentation about these parameters)
   */
  for (i=1; i