I've finally gotten TV decoding working on the FlyVideo 2000. Thanks a lot
to Gerd and others for their kind assistance. Now to tackle the other
composite inputs...
Previously, Gerd Knorr said:
>I hope I don't need a card= insmod option. It is the purpose of the PCI
>Subsystem IDs to allow autodetection. Unless some TV card vendor f*cks
>it up by using some ID which isn't unique it should work just fine
>without a card= insmod option.
Hmm, I'm not sure if this'll hold going forward. The tuner option that
worked with the FlyVideo 2000 card I have is the
"LG PAL (newer TAPC series)" entry. This is after I've looked at the
device specs for TDA9800T to find out how U/V-HF band switching is
done. Also, the marking on the Tuner block has "TCL2002MB-1". No vendor
ID that I can find, so I'm not sure if this should be the final
configuration entry for the FlyVideo2000 card yet.
>Some static is good, so picking the tuner as input source works. Now
>it should be just a matter of the right tuner type to get some video
>signal. Once video is there audio hopefully works too. But video is
>the first step, audio handling depends on the TV norm detected, so audio
>wouldn't work without a video signal anyway ...
I've managed to get TV decoding working. However, the audio path I needed
is LINE2 as TV audio input. However, the audio detection algorithm
sometimes default to PAL-I/NICAM and possibly other PAL standards, rather
than settling on PAL-BG. I'm not sure if the algo can handle the case of a
mono-audio signal only accurately (FlyVideo2000 has mono TV audio decoding
only). This is especially the case when I use xawtv 3.69 to switch
channels.
---- after modprobe saa7134 ----
saa7130[0]/audio: tvaudio thread scan start [2]
saa7130[0]/audio: scanning 5.500 MHz => dc is 394 [1889/2283]
saa7130[0]/audio: scanning 6.000 MHz => dc is 3371 [279/-3092]
saa7130[0]/audio: scanning 6.500 MHz => dc is 455 [527/72]
saa7130[0]/audio: found PAL-BGHI main sound carrier @ 6.000 MHz
saa7130[0]/audio: tvaudio_setmode: trying PAL-I NICAM [6.000/6.552 MHz]
saa7130[0]/audio: tvaudio_setmode: using PAL-I NICAM [6.000/6.552 MHz]
------
^^^^^^^^^^^^^^^^^^ This is incorrect!
Another attempt,
------ after modprobe saa7134 ----
saa7130[0]/audio: found PAL-BGHI main sound carrier @ 5.500 MHz
saa7130[0]/audio: tvaudio_setmode: trying PAL-B/G FM-stereo [5.500/5.742
MHz]
saa7130[0]/audio: tvaudio_setmode: trying PAL-B/G NICAM [5.500/5.850 MHz]
saa7130[0]/audio: tvaudio_setmode: using PAL-B/G FM-stereo [5.500/5.742
MHz]
-----
^^^^^^ ok, but I only have mono.
Is audio detection tied to the tuner parameters in 'struct tunertype'?
>saa7134 + tuner should be all you need.
Hmm. Do you have a PDF datasheet for the saa7134/0 devices? The
Phillips semiconductor site only shows a brief HTML description for
saa7134. I'm wondering if the programming parameters for saa7130 is
different, especially wrt. audio decoding. For now, I got TV audio by
selecting LINE2. I can't get the Audio In (stereo miniplug) working yet
with Composite Video. Obviously TV and LINE1 don't switch to the Audio In,
otherwise I'd have heard something on the input already. The TV audio
input gives static, but I'm not sure if it's a dangling input in my
decoder (I don't have FM decoding).
Incidentally, the audio path is still enabled after quitting xawtv 3.69.
I'm not sure if audio muting for the TV capture card is done by xawtv on
exit?
Thanks for all your help. I think I can provide a working entry
for FlyVideo2000 after the remaining issues have been resolved.
Regards,
T.C.
----
Wan Tat Chee (Lecturer)
School of Computer Science, Univ. Science Malaysia,
11800 Minden, Penang, Malaysia. Ofc Ph: +604 657-7888 x 3617
Internet: tcwan@xxxxxxxxx Web: http://nrg.cs.usm.my/~tcwan
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