[linux-dvb] [ANNOUNCE] scan-s2 is available, please test

Michel Verbraak michel at verbraak.org
Sat Nov 1 16:59:39 CET 2008


Goga777 schreef:
>>> Приветствую, Michel
>>>
>>> but cx24116 based cards don't work with fec=auto for dvb-s2 
>>>
>>> I'm not sure - may be for cx24116 cards the parameters roll off & modulation are obligatory (not optional)
>>>
>>>
>>>
>>>   
>>>       
>>>> Tested your scan-s2 with a Technisat HD2 card.
>>>>
>>>> Scanning works. But some channels are reported twice with different 
>>>> frequency. I found an error which is fixed by the patch file named 
>>>> scan.c.diff1.
>>>>
>>>> I would also like to propose the following change (see file scan.c.diff2 
>>>> or scan.c.diff which includes both patches). This change makes it 
>>>> possible to only scan for DVB-S channels or DVB-S2 channels or both. 
>>>> This is done by specifying lines starting with S or S2 in the input file.
>>>>
>>>> example input file:
>>>> # Astra 19.2E SDT info service transponder
>>>> # freq pol sr fec
>>>> S 12522000 H 22000000 2/3       <only DVB-S channels are scanned>
>>>> S 11914000 H 27500000 AUTO
>>>> S 10743750 H 22000000 5/6
>>>> S 12187500 H 27500000 3/4
>>>> S 12343500 H 27500000 3/4
>>>> S 12515250 H 22000000 5/6
>>>> S 12574250 H 22000000 5/6
>>>> S2 12522000 H 22000000 AUTO    <only DVB-S2 channels are scanned>
>>>> S2 11914000 H 27500000 AUTO
>>>>
>>>> I hope this is usefull.
>>>>
>>>> Regards,
>>>>
>>>> Michel.
>>>>     
>>>>         
>>>   
>>>       
>> Goga,
>>
>> AUTO fec does work because the following is the result for the DVB-S2 
>> channels I get with the above input:
>>
>> PREMIERE HD:11914:h:0:27500:767:772:129:6
>> DISCOVERY HD:11914:h:0:27500:1023:1027:130:6
>> ASTRA HD+:11914:h:0:27500:1279:1283:131:6
>> ANIXE HD:11914:h:0:27500:1535:1539:132:6
>>     
>
> you have stb0899 based card, but I have mean cx24116 based card.
>
> Goga
>
>   
Goga,

Sorry I mis understood you. I used AUTO fec because the DVB-S2 channel 
on Astra 19.2 and frequency 11914 use FEC 9/10 according to the webpage 
kingofsat (http://nl.kingofsat.net/pos-19.2E.php). Because current 
scan-s2 does not handle this I changed it to AUTO.

fec table according to scan.c
struct strtab fectab[] = {
        { "NONE", FEC_NONE },
        { "1/2",  FEC_1_2 },
        { "2/3",  FEC_2_3 },
        { "3/4",  FEC_3_4 },
        { "4/5",  FEC_4_5 },
        { "5/6",  FEC_5_6 },
        { "6/7",  FEC_6_7 },
        { "7/8",  FEC_7_8 },
        { "8/9",  FEC_8_9 },
        { "AUTO", FEC_AUTO },
        { NULL, 0 }
};

New DVB API can handle FEC 9/10 (include/linux/dvb/frontend.h)
typedef enum fe_code_rate {
        FEC_NONE = 0,
        FEC_1_2,
        FEC_2_3,
        FEC_3_4,
        FEC_4_5,
        FEC_5_6,
        FEC_6_7,
        FEC_7_8,
        FEC_8_9,
        FEC_AUTO,
        FEC_3_5,
        FEC_9_10,
} fe_code_rate_t;

Will create a patch for this as soon as possible.

Regards

Michel.
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