[mythtv-users] muting/disabling HDMI audio while fast forwarding?

[JP Fournier]

Hi All,

HDMI audio is working for me with the radeonhd drivers (with HDMI audio 
patch), but I've noticed problems with audio muting during fast forward.

At 3x fast forwarding things are silent.  If I increase this to 5x then 
broken audio plays, which I'd prefer to avoid.  I have tried with both 
"use internal volume controls" and without, and get the same result.

I wouldn't expect the internal volume controls to work anyhow, since 
there is no "master" or "pcm" device for my HDMI audio:


jape at vcr3:~$ amixer
Simple mixer control 'IEC958',0
   Capabilities: pswitch pswitch-joined
   Playback channels: Mono
   Mono: Playback [on]
jape at vcr3:~$


So I'm somewhat confused as to why there is no audio with 3x fast 
forwarding.

At 3x FF the logs are silent.

At 5x they are flooded with:

2008-10-18 08:14:17.145 NVP::AddAudioData():p1: Audio buffer overflow, 
audio data lost!
2008-10-18 08:14:17.147 NVP::AddAudioData():p1: Audio buffer overflow, 
audio data lost!
2008-10-18 08:14:17.147 NVP::AddAudioData():p1: Audio buffer overflow, 
audio data lost!
2008-10-18 08:14:17.147 NVP::AddAudioData():p1: Audio buffer overflow, 
audio data lost!
2008-10-18 08:14:17.149 NVP::AddAudioData():p1: Audio buffer overflow, 
audio data lost!
2008-10-18 08:14:17.149 NVP::AddAudioData():p1: Audio buffer overflow, 
audio data lost!
2008-10-18 08:14:17.150 NVP::AddAudioData():p1: Audio buffer overflow, 
audio data lost!

Any pointers on how to "fix" this?  I guess in my case I would want myth 
to not dump sound data to the sound device while fast forwarding.  Is 
this an option somewhere?

regards

jp