[MPlayer-users] [AO_ALSA] Unable to set buffer time near: Invalid argument

[Reimar Döffinger]

On Sun, May 16, 2010 at 01:21:10PM +0800, Raymond Yau wrote:
> 2010/5/8 Raymond Yau <superquad.vortex2 at gmail.com>
> 
> > >> On Sun, 2009-12-20 at 09:55 -0500, Robert Henney wrote:
> >
> > >* the latest svn appears to have an alsa issue when playing more than one
> > *>* file on some particular files I have.  it's reproducible too.
> > *>*
> > *>* the audio will consistently fail to initialize for the second video file,
> > *>* though if the files are reversed or played separately or -ao oss is used
> > *>* then the problem does not occur.
> > *>*
> > *>* mplayer -ao alsa "[SpoonSubs]_Sketchbook_full_color's_02_[E80DF436].mkv" \
> > *>*                  "[SpoonSubs]_Sketchbook_full_color's_03_[FFE2F973].mkv"
> > *>*
> > *>* results in:
> > *>*   Building audio filter chain for 44100Hz/2ch/s16le -> 0Hz/0ch/??...
> > *>*   [AO_ALSA] Unable to set buffer time near: Invalid argument
> > *>*   Failed to initialize audio driver 'alsa'
> > *>*
> > *>* the sample files are in http://rut.org/sketch/
> > *
> > >> Do you still get this error with the current git repo
> > (git://repo.or.cz/mplayer-build.git)? I fixed some issues that could
> >
> > perhaps cause this, but as I can't reproduce your problem on my machine
> > I don't know whether those were the ones you hit.
> >
> > [AO_ALSA] Unable to set buffer time near: Invalid argument
> 
> http://thread.gmane.org/gmane.comp.video.mplayer.cvs/12760
> 
> some PCI sound cards have special constraint on period size to fit the
> period with in the DMA page  ( On x86  DMA page is 4K bytes )


The driver is still broken IMO, if it needs a specific period size, set_buffer_time_near
should set it to that, not fail.