On Sat, Mar 01, 2008 at 12:20:05AM +0000, Andrea wrote:
> Hi,
>
> I've tried to add an extra argument to gnutv to set the size of the dvb_ringbuffer via
> DMX_SET_BUFFER_SIZE.
>
> I have not really understood the difference between dvr and demux.
> It seems that gnutv uses the dvr to read from the DVB card and then copies the content to a file.
>
> I call
>
> int dvbdemux_set_buffer(int fd, int bufsize)
> {
> return ioctl(fd, DMX_SET_BUFFER_SIZE, bufsize);
> }
>
> on the dvr (I think), but it does not make much of a change. The ioctl call returns success.
> I've printed a lot of debug output (adding a few dprintk) and this is what I see when I run gnutv.
> Now, I set the buffer to 1024 * 1024 which is nowhere in the log.
> I cannot see in the log the 2 functions (demux and dvr) handling this ioctl call:
> dvb_demux_do_ioctl and dvb_dvr_do_ioctl (I've added some printk as well).
In 2.6.25-rc3 the dvr kernel side looks like this:
1015 switch (cmd) {
1016 case DMX_SET_BUFFER_SIZE:
1017 // FIXME: implement
1018 ret = 0;
1019 break;
i guess its clear why it doesnt make a difference ;)
Flo
--
Florian Lohoff flo@xxxxxxxxxx +49-171-2280134
Those who would give up a little freedom to get a little
security shall soon have neither - Benjamin Franklin
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