2010/5/16 Reimar D?ffinger <Reimar.Doeffinger at gmx.de> > 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. > > No, the most common HDA driver require period size must be multiple of 128 bytes ( PCIE brust size) , you cannot exactly set buffer_size to 0.5 second since the common sample rate is 44100/48000 (multiple of 3 or 9 ) You just get a buffer time near to 0.5 second only those USB audio driver allow you to set buffer time to 0.5 second
