[MPlayer-users] Playing trouble with multi-tuner dvb card

[william firschein]

thanks for your reply. it is now working satisfactorily.

On Wed, Sep 5, 2012 at 10:08 AM, Dominique Michel
<dominique.michel at vtxnet.ch> wrote:
> Le Tue, 22 Nov 2011 21:05:58 +0100,
> Reimar Döffinger <Reimar.Doeffinger at gmx.de> a écrit :
>
>> On Tue, Nov 22, 2011 at 07:46:51PM +0100, Dominique Michel wrote:
>> > Le Mon, 21 Nov 2011 19:53:58 +0100,
>> > Reimar Döffinger <Reimar.Doeffinger at gmx.de> a écrit :
>> >
>> > > On Mon, Nov 21, 2011 at 01:25:13AM +0100, Dominique Michel wrote:
>> > > > I think that writing udev rules is behind the capabilities of
>> > > > many users. So, are you aware of this issue? and do you have
>> > > > any plan in order to solve this into mplayer?
>> > >
>> > > The short and honest answer: The DVB maintainer has no time for
>> > > MPlayer development, I have only little time and my only DVB
>> > > device (DVB-T stick) seems is broken.
>> > > So the honest truth unfortunately is that it is unlikely someone
>> > > will fix it I am afraid. While the basic idea of fixing it by
>> > > changing the syntax to use e.g.
>> > > dvb://2:3@
>> > > to mean adapter2/frontend3 is simple enough, making sure
>> > > everything still works seems quite tricky and few people have a
>> > > crazy enough setup to actually be able to test it...
>> > > If you or someone else feel up to do a bit of "simple" C
>> > > programming I'd be willing to help you getting it implemented.
>> > >
>> >
>> > Hi Reimar,
>> >
>> > I can try. But you must know that C is not my cup of tee,..
>
>> Maybe on list is better for the moment, I still have hopes that maybe
>> others will also help when I am again slow to answer.
>> I made a hopefully quite complete but very terse list of what needs to
>> be done.
>> How to start:
>> look at stream/stream_dvb.c in some editor.
>> Near the top you will see (with some distance in-between those):
>> int card;..
>> {"card", ST_OFF(card), CONF_TYPE_INT, M_OPT_RANGE, 1, 4, NULL},
>> {"username",    ST_OFF(card), CONF_TYPE_INT, M_OPT_RANGE, 1, 4, NULL},
>>         {"card", &stream_defaults.card, CONF_TYPE_INT, M_OPT_RANGE,
>> 1, 4, NULL},
>>
>> You will want want to duplicate those, replacing "card" by e.g.
>> "frontend", and "username" by "password" (better don't ask about that
>> one :-) ).
>>
>> Then in dvb_get_config you will want to add another loop so instead of
>> only looping i from 0 to MAX_CARDS it will also be some j from 0 to
>> MAX_FRONTENDS and the filename is generated by
>> "/dev/dvb/adapter%d/frontend%i", i, j
>> At the end of the loop there is also
>> conf->cards[conf->count].devno = i;
>> You will want to store the frontend number (j) in that struct, too.
>>
>> Then as a last step in dvb_open there is
>> if(priv->config->cards[i].devno+1 == p->card)
>> here you'll want to extend this to also check the (in the first step)
>> newly added p->frontend value.
>
> OK, I did not forget this. I try several things. but the results are not
> worth sharing at that time. I did find another tutor that seam to be
> the good one for me, but to be sure to miss nothing, I start again from
> the beginning. So, it will take some time.
>
> In the main time, I found a solution to use mplayer with a multi-tuner
> dvb card without the need of symlinking the dvb devices. It is a 3
> steps setup:
>
> - Use scan to get some channel lists (scan is renamed into scan-dvb on
> gentoo):
>
> scan-dvb /usr/share/dvb/dvb-t/ch-All -a 0 -f 1 -d 1 -o zap | tee
> ~/.tzap/channels_ter.conf
> scan-dvb /usr/share/dvb/dvb-s/Astra-19.2E -x 0 -t 1 -a 0 -o zap | tee
> ~/.tzap/channels_sat.conf
>
> In 2 different terminals, run something like the following:
>
> - tune the card
> tzap -a 0 -f 1 -d 1 -r "RTS Un" -c channels_ter.conf
> or
> szap -a 0 -r "Cubavision Internacional" -c channels_sat.conf
>
> - and play it
> mplayer /dev/dvb/adapter0/dvr1
> or
> mplayer /dev/dvb/adapter0/dvr0
>
> Ciao,
> Dominique
>
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>
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