On Monday 12 February 2007 09:22, Koval Valery wrote:
> Hi.
>
> Please forgive me for my bad english ;)
>
> kernel: 2.6.19.2, ivtv 0.9.1 (0.10rc1),
> hardware: Gotview PCI DVD2 Deluxe (Philips MK5)
> work: video+audio = ok, radio - errror
>
> 1. v4l2-ctl -f 215.250 -s SECAM --verbose
> ...
> ok
>
> 2. cat /dev/video0 | mplayer - &
> ok.
>
> 3. v4l2-ctl -f 135.250 -s PAL
> VIDIOC_QUERYCAP: ok
> VIDIOC_G_TUNER: ok
> VIDIOC_S_FREQUENCY: ok
> Frequency set to 2164 (135.250000 MHz)
> VIDIOC_S_STD: failed: Device or resource busy
>
> After that I begin to search in v4l2-ctl source this code.
> I found tv_set_norm and tv_set_freq (doioctl VIDIOC_S_STD).
> Question: how I can change standard from PAL to SECAM if
> /dev/video0 busy (cat /dev/video0 | mplayer -) ?
You cannot change the video standard while a capture is in progress. It
is simply not supported by the ivtv. You will have to stop the capture
first. You generally specify the standard (if it needs to be changed at
all) once only. Changing the frequency on the fly is no problem.
> May be deal with stream_pvr?
> May be I must stream_pvr close, change standard, and reopen stream?
>
> How I can do this?
>
> Request: may be require to change v4l2-ctl for
> make atomic changes (like svn) - or change freq & standard (if I want
> this), or don't change freq and standard (if can't change freq OR
> standard)?
>
>
> Question for radio:
>
> v4l2-ctl --list-audio-inputs
> ioctl: VIDIOC_ENUMAUDIO
> Input : 0
> Name : Tuner 1
>
> Input : 1
> Name : Line In 1
>
> but in source I see some line about radio.
>
> ivtv log in /var/log/messages - ok:
> dmesg | grep ivtv
> ivtv: ==================== START INIT IVTV ====================
> ivtv: version 0.9.0 (tagged release) loading
> ivtv: Linux version: 2.6.19.2
> ivtv: In case of problems please include the debug info between
> ivtv: the START INIT IVTV and END INIT IVTV lines, along with
> ivtv: any module options, when mailing the ivtv-users mailinglist.
> ivtv0: Autodetected GotView PCI DVD2 Deluxe card (cx23416 based)
> ivtv0: loaded v4l-cx2341x-enc.fw firmware
> (last from ivtv 0.10rc1)
> tuner 1-0043: chip found @ 0x86 (ivtv i2c driver #0)
> tuner 1-0060: chip found @ 0xc0 (ivtv i2c driver #0)
> cx25840 1-0044: cx25843-23 found @ 0x88 (ivtv i2c driver #0)
> ivtv0: Encoder revision: 0x02050032
> ivtv0: Registered device video0 for encoder MPEG
> ivtv0: Registered device video32 for encoder YUV
> ivtv0: Registered device vbi0 for encoder VBI
> ivtv0: Registered device video24 for encoder PCM audio
> ivtv0: Registered device radio0 for encoder radio
> ivtv0: Initialized GotView PCI DVD2 Deluxe, card #0
> ivtv: ==================== END INIT IVTV ====================
>
> How can I switch tuner in radio mode and work with ivtv-radio
> (like ivtv-radio -v -a)?
Just running ivtv-radio will switch the tuner to radio mode. You don't
have to do anything special.
Regards,
Hans
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