gstreamer buffering mechanism for DLNA application

[Soho Soho123]

Hi all,

when I try to adjust the property about :
#define DEFAULT_BUFFER_DURATION
#define DEFAULT_BUFFER_SIZE
#define DEFAULT_RING_BUFFER_MAX_SIZE
in gstplaybin2.c for Rygel dlna application.
But it seems helpless.
Does anyone have idea about :
how to enlarge the buffer size for download data from network when the
application is playbin2 uri=.......... application?


Or any other property can be adjust ?

Thanks!
Soho