Blueprint : Restore channel scanning

Hello,

a few months ago I dealed with supporting of different satellite positions via DISEQC in me-tv.

I just would like to point you to the question whether a new scan function should support all the Digital TV modes like DVB-T, DVB-C, DVB-S and so on.
I'm feeling that especially DVB-S/S2 needs handling of some details like satellite position, support of Disecq switches or antenna rotors. As far as I know, DVB-S2 for HD channels needs to use a newer version of the DVB-API.
Beside this, we should handle scan options for scanning for TV/Radio/Free channels.
It could also be useful to peek how the guys from Kaffeine do that stuff.

Please don't misunderstand me: I find it a great idea to redeploy a scan option, this is a really necessary feature for unexperienced users. You should just decide beforehand, which subset of features you want to integrate first, and keep in mind, that support for the above mentioned points need to be done in the future.

best regards,

Skip

Hi Skip D.

w_scan seems to support almost everything, and is a highly active project (last update 11.11.2012, http://wirbel.htpc-forum.de/w_scan/index2.html, and they even speak Germans !). If memory serves, retrive radio frequencies as well as TV's, and switch Digital TV modes are w_scan options. So I will ask the user to select a subset of w_scan options to build a custom channel.conf file, and then import it.

Pascal

Hi Pascal,

I totally agree, that seems to me the best solution right now.

I use w_scan currently to create my personal input file for me-tv:

w_scan -f s -s S19E2 -E 0 -R 0 -X >> channels_19E2TV.conf
w_scan -f s -s S19E2 -E 0 -T 0 -X >> channels_19E2Radio.conf
w_scan -f s -s S28E2 -E 0 -R 0 -D1c -X >> channels_28E2TV.conf
w_scan -f s -s S28E2 -E 0 -T 0 -D1c -X >> channels_28E2Radio.conf

First 2 lines for LNB #0, both only unencrypted channels, first line TV then Radio
Lower 2 Lines the same for LNB #1

Afterwards I use sed to alter the forth column to :1: for LNB #1.

See this except of my channels.conf fpr me-tv (First line LNB #0, second for LNB#1):

Cubavision Internacional(GlobeCast):11508:v:0:22000:708:728:7008
FRANCE 24(BSkyB):11426:v:1:27500:2331:2334:52570

Me-TV interpretes this column and sends the appropriate Disecq command.

W_scan can deal with DVB-C, DVB-T, DVB-S/S2, ATSC???
This would be a really good choice!

Best regards,

Skip

Hi,

I also think that using w_scan is the best way because we don't need to
update me-tv every time there is change in the DVB technology. I'm
wondering if w_scan have a library we can use or everything is done within
the main application.

Cheers,
Fred

On Sun, Dec 9, 2012 at 12:41 PM, Skip D. <
<email address hidden>> wrote:

> Question #216313 on Me TV changed:
> https://answers.launchpad.net/me-tv/+question/216313
>
> Skip D. posted a new comment:
> Hi Pascal,
>
> I totally agree, that seems to me the best solution right now.
>
> I use w_scan currently to create my personal input file for me-tv:
>
> w_scan -f s -s S19E2 -E 0 -R 0 -X >> channels_19E2TV.conf
> w_scan -f s -s S19E2 -E 0 -T 0 -X >> channels_19E2Radio.conf
> w_scan -f s -s S28E2 -E 0 -R 0 -D1c -X >> channels_28E2TV.conf
> w_scan -f s -s S28E2 -E 0 -T 0 -D1c -X >> channels_28E2Radio.conf
>
> First 2 lines for LNB #0, both only unencrypted channels, first line TV
> then Radio
> Lower 2 Lines the same for LNB #1
>
> Afterwards I use sed to alter the forth column to :1: for LNB #1.
>
> See this except of my channels.conf fpr me-tv (First line LNB #0, second
> for LNB#1):
>
> Cubavision Internacional(GlobeCast):11508:v:0:22000:708:728:7008
> FRANCE 24(BSkyB):11426:v:1:27500:2331:2334:52570
>
> Me-TV interpretes this column and sends the appropriate Disecq command.
>
>
> W_scan can deal with DVB-C, DVB-T, DVB-S/S2, ATSC???
> This would be a really good choice!
>
> Best regards,
>
> Skip
>
> --
> You received this question notification because you are an answer
> contact for Me TV.
>

--
"In a world without walls, who really needs Windows"
"Nothing is foolproof because fools are so ingenious"

Hi,

No there is no such a libdevel, and the the main() of w_scan is almost 3000 unextractable lines of codes so the oneliner approach is compromised.

I am convinced that a lot of apps wouldn't have develop their own scan if a lib had existed. We should ask w_scan to "open" their code, not as "open" source but in reusability, but it is not easy to do that kind of refactoring because the current program is stable.

For the moment i try to see if the w_scan stderr messages can be parsed to get a progress while scanning when I launch any of Skip D. commands. This could do the job until a lib appears.

Pascal

May the force be with you :)

On Mon, Dec 10, 2012 at 2:55 PM, Pascal Noisette <
<email address hidden>> wrote:

> Question #216313 on Me TV changed:
> https://answers.launchpad.net/me-tv/+question/216313
>
> Pascal Noisette posted a new comment:
> Hi,
>
> No there is no such a libdevel, and the the main() of w_scan is almost
> 3000 unextractable lines of codes so the oneliner approach is
> compromised.
>
> I am convinced that a lot of apps wouldn't have develop their own scan
> if a lib had existed. We should ask w_scan to "open" their code, not as
> "open" source but in reusability, but it is not easy to do that kind of
> refactoring because the current program is stable.
>
> For the moment i try to see if the w_scan stderr messages can be parsed
> to get a progress while scanning when I launch any of Skip D. commands.
> This could do the job until a lib appears.
>
> Pascal
>
> --
> You received this question notification because you are an answer
> contact for Me TV.
>

--
"In a world without walls, who really needs Windows"
"Nothing is foolproof because fools are so ingenious"