[linux-dvb] Re: Audio loss with latest CVS driver

[Klaus Schmidinger <Klaus.Schmidinger@cadsoft.de>]

Ralph Metzler wrote:
> 
> Klaus Schmidinger writes:
>  > If I do the following ioctl() calls while replaying a "multiplexed PES"
>  > recording (done with VDR 0.80pre5) through the /dev/ost/video device
>  > the audio gets mute:
>  >
>  >   ioctl(videoDev, VIDEO_FREEZE);
>  >   ioctl(videoDev, VIDEO_SLOWMOTION, 2);
>  >   ioctl(videoDev, VIDEO_PLAY);
>  >
>  > and not even a subsequent
>  >
>  >   ioctl(audioDev, AUDIO_SET_MUTE, false);
>  >
>  > can change that. In the typical VDR application these ioctl() calls don't
>  > occur immediately after each other. This is just the smallest example that
>  > demonstrates this behaviour.
>  >
>  > Could this be a driver problem, or am I doing something wrong here?
> 
> As explained in the API docs a VIDEO_CONTINUE is used after a
> VIDEO_FREEZE to continue playback.
> If you do this everything works fine but I'll see what I have to
> change to make the sequence you describe work.

I have changed the VIDEO_PLAY to VIDEO_CONTINUE and tried this again with the
latest CVS driver version (2001-05-25), but this sequence still doesn't work:

  ioctl(videoDev, VIDEO_FREEZE);
  ioctl(videoDev, VIDEO_SLOWMOTION, 2);
  ioctl(videoDev, VIDEO_CONTINUE);

Note that

  ioctl(videoDev, VIDEO_FREEZE);
  ioctl(videoDev, VIDEO_CONTINUE);

works as expected, but with an intermediate VIDEO_SLOWMOTION the audio is
lost and doesn't come back.

Klaus
-- 
_______________________________________________________________

Klaus Schmidinger                       Phone: +49-8635-6989-10
CadSoft Computer GmbH                   Fax:   +49-8635-6989-40
Hofmark 2                               Email:   kls@cadsoft.de
D-84568 Pleiskirchen, Germany           URL:     www.cadsoft.de
_______________________________________________________________


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