[gst-devel] About some code segments in hdv1394src plugin

[liangzhihong1984 <lia...@12...>]

Hi, everyone.
I was learning how to write a plugin.
when I study the source code of hdv1394src, some code really confused me.
 
  if (iec61883_mpeg2_recv_start (src->iec61883mpeg2, src->channel) != 0)
    goto cannot_start;
#if 0
  if (raw1394_start_iso_rcv (src->handle, src->channel) < 0)
    goto cannot_start;
#endif
 
So when should I use the iec61883_mpeg2_recv_start and when should raw1394_start_iso_rcv， can anybody explain?
 
Thank you in advance.
Best Regards, 
Leon Liang