5.2-CURRENT a prehravani wav souboru

[Petr Řehoř]

Poslal jsem to Liborovi Kratochvílovi. P.

> -----Original Message-----
> From: users-l-bounces at freebsd.cz 
> [mailto:users-l-bounces at freebsd.cz] On Behalf Of Tomas Pluskal
> Sent: Wednesday, August 18, 2004 1:32 PM
> To: FreeBSD mailing list
> Subject: Re: 5.2-CURRENT a prehravani wav souboru
> 
> 
> 
> > no... operace prehravani wavu je v podstate "cat neco > 
> /dev/nekam" to by nemel
> > upgrade jadra moc ovlivnovat
> 
> pokud dam 'cat <soubor.wav> > /dev/dsp' tak se mi ozvou jen skreky 
> (rozsypany caj v audio podobe), ackoli treba ten wavplay je prehrava 
> normalne
> 
> 
> > jedine co ti poradim je vypnuti/zapnuti vchanu. popr. si to 
> tracnout pres
> > ktrace play -d /dev/dsp0 cosi.wav
> > a pak
> > kdump
> > mohlo by ti to pomoct k zjisteni kde je chyba
> 
> kdump:
> ...
>   57779 play     RET   read 44/0x2c
>   57779 play     CALL  open(0xbfbfe9ac,0x1,0x280b8df8)
>   57779 play     NAMI  "/dev/dsp1"
>   57779 play     RET   open 4
>   57779 play     CALL  ioctl(0x4,SNDCTL_DSP_GETBLKSIZE,0xbfbfe7e8)
>   57779 play     RET   ioctl 0
>   57779 play     CALL  ioctl(0x4,SNDCTL_DSP_SETFMT,0x804bf20)
>   57779 play     RET   ioctl -1 errno 19 Operation not 
> supported by device
>   57779 play     CALL  write(0x2,0xbfbfe000,0x6)
>   57779 play     GIO   fd 2 wrote 6 bytes
>         "play: "
> ...
> 
> vypis z wavplay vypada podobne:
> ...
>   78934 wavplay  CALL  ioctl(0x4,SNDCTL_DSP_GETBLKSIZE,0x8054034)
>   78934 wavplay  RET   ioctl 0
>   78934 wavplay  CALL  break(0x8056000)
>   78934 wavplay  RET   break 0
>   78934 wavplay  CALL  ioctl(0x4,SNDCTL_DSP_SETFMT,0xbfbfe778)
>   78934 wavplay  RET   ioctl 0
>   78934 wavplay  CALL  ioctl(0x4,SNDCTL_DSP_STEREO,0xbfbfe778)
>   78934 wavplay  RET   ioctl 0
>   78934 wavplay  CALL  ioctl(0x4,SNDCTL_DSP_SPEED,0xbfbfe774)
>   78934 wavplay  RET   ioctl 0
>   78934 wavplay  CALL  ioctl(0x4,AUDIO_COMPAT_DRAIN,0)
>   78934 wavplay  RET   ioctl 0
> ...
> 
> problem je tedy zrejme v tom volani SNDCTL_DSP_SETFMT, musel bych ale 
> zjistit s jakymi parametry se to presne vola.
> 
> >
> > a mimochodem, ja na sve (ted uz) 6-current zadne /dev/dsp0 
> nemam (akorat dsp0.0
> > atp)
> 
> Ja je tam taky nemam (v tom smyslu ze nejsou videt pri 'ls 
> /dev', nicmene 
> tam tyhle zarizeni jsou (prehravam pres ne zvuk z mplayeru, xmms, 
> wavplay..). Nevim proc nejsou videt, zrejme je to zalezitost devfs.
> 
> Tomas
> 
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