From: Mauro Carvalho Chehab <mchehab@redhat.com>
To: Manu Abraham <abraham.manu@gmail.com>
Cc: linux-media@vger.kernel.org
Subject: Re: PATCH: Query DVB frontend capabilities
Date: Mon, 14 Nov 2011 16:42:59 -0200 [thread overview]
Message-ID: <4EC16133.8090300@redhat.com> (raw)
In-Reply-To: <CAHFNz9KqYYtH4YdLwkROXN=94Fr8pbbvJspQLu6VM8LuSNNjKA@mail.gmail.com>
Em 14-11-2011 16:30, Manu Abraham escreveu:
> On Mon, Nov 14, 2011 at 11:38 PM, Mauro Carvalho Chehab
> <mchehab@redhat.com> wrote:
>> Yet, this doesn't require any changes at DVB API, as all that the demodulator
>> need to know is the sub-carrier parameters (frequency, roll-off, symbol
>> rate, etc).
>
> You do: this is why there were changes to the V3 API to accomodate
> DVB-S2, which eventually became V5. The major change that underwent is
> the addition of newer modulations. The demodulator need to be
> explicitly told of the modulation. With some demodulators, the
> modulation order could be detected from the PL signaling, rather than
> the user space application telling it.
DVB-S2 doesn't require DVB bandwidth to be specified.
Regards,
Mauro
next prev parent reply other threads:[~2011-11-14 18:43 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-11-10 14:18 PATCH: Query DVB frontend capabilities Manu Abraham
2011-11-10 14:44 ` Andreas Oberritter
2011-11-10 15:30 ` Manu Abraham
2011-11-10 21:20 ` Mauro Carvalho Chehab
2011-11-11 6:26 ` Manu Abraham
2011-11-11 10:12 ` Mauro Carvalho Chehab
2011-11-11 22:07 ` Manu Abraham
2011-11-11 22:38 ` Mauro Carvalho Chehab
2011-11-12 3:36 ` Andreas Oberritter
2011-11-13 11:39 ` Mauro Carvalho Chehab
2011-11-11 14:30 ` Andreas Oberritter
2011-11-11 14:43 ` Mauro Carvalho Chehab
2011-11-11 15:06 ` Andreas Oberritter
2011-11-11 17:14 ` Mauro Carvalho Chehab
2011-11-11 20:09 ` Andreas Oberritter
2011-11-11 22:02 ` Mauro Carvalho Chehab
2011-11-12 4:02 ` Andreas Oberritter
2011-11-11 22:12 ` Manu Abraham
2011-11-11 9:55 ` FE_CAN-bits (was: Re: PATCH: Query DVB frontend capabilities) Patrick Boettcher
2011-11-11 10:21 ` FE_CAN-bits Mauro Carvalho Chehab
2011-11-11 11:36 ` FE_CAN-bits Antti Palosaari
2011-11-11 12:44 ` FE_CAN-bits Mauro Carvalho Chehab
2011-11-11 17:43 ` PATCH: Query DVB frontend capabilities BOUWSMA Barry
2011-11-11 18:37 ` Mauro Carvalho Chehab
2011-11-11 22:34 ` Manu Abraham
2011-11-13 13:32 ` Mauro Carvalho Chehab
2011-11-13 15:27 ` Manu Abraham
2011-11-14 11:47 ` Mauro Carvalho Chehab
2011-11-14 15:02 ` Manu Abraham
2011-11-14 16:39 ` Mauro Carvalho Chehab
2011-11-14 17:09 ` Manu Abraham
2011-11-14 18:08 ` Mauro Carvalho Chehab
2011-11-14 18:30 ` Manu Abraham
2011-11-14 18:42 ` Mauro Carvalho Chehab [this message]
2011-11-14 18:59 ` Manu Abraham
2011-11-14 20:31 ` Mauro Carvalho Chehab
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