[vdr] Re: Audio & Muting SPDIF

["Reinhard Walter Buchner" <rw.buchner@freenet.de>]

Hi,

No ideas or takers ?

Greetz,
Reinhard

----- Original Message -----
From: "Reinhard Walter Buchner" <rw.buchner@freenet.de>
To: <vdr@linuxtv.org>
Sent: Monday, April 21, 2003 5:46 PM
Subject: [vdr] Audio & Muting SPDIF


> Hi Klaus, all,
>
> > Reinhard, PLEASE don't mix several different topics
> > into one single message!!!!
>
> Sorry. This happens when I sit in front of VDR and test
> several (sometimes new) things. Doing so, I make note
> of what I did while actually doing it. So sometimes I add
> new things to an old or other topic. I'll try to avoid this
> in the future.
>
> New try for the SPDIF & audio problem ;o)
>
> I *now* found out why the Mute button doesn't work with
> digital SPDIF output ;o)) When you mute VDR's output
> your ToggleMute only sets Volume to zero. However, you
> *can't* control the digital volume output, so in order to mute
> the SPDIF output, here is what I did:
>
> In dvbdevice.c:
>
> void cDvbDevice::Mute(void)
> {
>   if (fd_audio >= 0) {
>      CHECK(ioctl(fd_audio, AUDIO_SET_AV_SYNC, false));
>      CHECK(ioctl(fd_audio, AUDIO_SET_MUTE,(cDevice::
>      PrimaryDevice()->IsMute()) ? false : true));
>      }
> }
>
> and in vdr.c I changed:
>
> case kMute:
>                if (key == kMute) {
>                   ((cDvbDevice*)cDevice::PrimaryDevice())->Mute();
>                   if (!cDevice::PrimaryDevice()->ToggleMute() && !Menu)
>                      break; // no need to display "mute off"
>                   }
>
> Now VDR mutes all sound outputs when hitting kMute.
> Grrr! Well is does so for FTA channels! I just did some more
> testing:
>
> - on an encrypted channel and here it only mutes the analog
>    part. Sh..!
>
> - trying this with a replay recording doesn't work for SPDIF out
>
> - MP3 Plugin: Here ist even messes up the sound. Although the
>    mute part works just fine it somehow can't resync on demute,
>   which results in a hacked noise ;o(, which can only be stopped
>   by stopping and restarting replay.
>
> Klaus, anyone: any idea, why it doesn't work for the above
> points? For FTA channels the changes work perfectly. I'm
> (still) out of ideas right now ;o( I also tried setting AV_SYNC
> back to true after and before demuting, but it didn't help
> rule out the problem. It would be nice to able to mute all
> sound outputs of the DVB card. In another version, I also
> changed how to demute. You could either press Mute again
> or if you hit the volume button (up or down) it would
> automatically demute the output. But before we settle on
> how to demute, I(we) have to find a way so this works for
> crypted channels and a replay (be it VDR or a plugin)
>
>
> Greetz,
> Reinhard
>
>
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