[linux-dvb] Nova-s-ci, szap, dvr

[michal <michal@etc.cz>]

If I tune some channel with szap, sometimes I can't read anything from 
/dev/dvb/adapter0/dvr0. If szap locks signal immediately (as illustrated 
 below), then TS stream can be read from dvr.

[root@vonasek szap]# szap -r sat.1
zapping to 'SAT.1':
sat 0, frequency = 12480 MHz V, symbolrate 27500000, vpid = 0x06ff, apid 
= 0x0700
using '/dev/dvb/adapter0/frontend0' and '/dev/dvb/adapter0/demux0'
status 1f | signal b541 | snr db30 | ber 00001a00 | unc 00000000 | 
FE_HAS_LOCK
status 1f | signal b679 | snr db33 | ber 00000000 | unc 00000000 | 
FE_HAS_LOCK
status 1f | signal b67d | snr db36 | ber 00000000 | unc 00000000 | 
FE_HAS_LOCK


But if some delay is present during locking signal, then no data is 
available in dvr.

[root@vonasek .szap]# szap -r eurosport
zapping to 'Eurosport':
sat 0, frequency = 11954 MHz H, symbolrate 27500000, vpid = 0x019a, apid 
= 0x01a4
using '/dev/dvb/adapter0/frontend0' and '/dev/dvb/adapter0/demux0'
status 00 | signal 0000 | snr 5b3b | ber 0000b39a | unc 00000000 |
status 03 | signal 1020 | snr 6c81 | ber 0000ffbd | unc 00000000 |
status 00 | signal 0000 | snr 608a | ber 0000ff9a | unc 00000000 |
status 03 | signal 5edf | snr 6fba | ber 0000ff93 | unc 00000000 |
status 00 | signal 0000 | snr 2b32 | ber 0000ff8c | unc 00000000 |
status 03 | signal a896 | snr b1ae | ber 0000ffc0 | unc 00000000 |
status 00 | signal 0000 | snr 3399 | ber 0000ff00 | unc 00000000 |
status 1f | signal b682 | snr d6e0 | ber 00008100 | unc 00000000 | 
FE_HAS_LOCK
status 1f | signal b540 | snr d728 | ber 00000000 | unc 00000000 | 
FE_HAS_LOCK
status 1f | signal b67e | snr d6ec | ber 00000000 | unc 00000000 | 
FE_HAS_LOCK
status 1f | signal b67d | snr d72e | ber 00000000 | unc 00000000 | 
FE_HAS_LOCK


Is it problem of szap or driver?

Michal



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