Re: [2.6.3] snd_intel8x0: playing to fast

[mru@kth.se (Måns Rullgård)]

Luca <kronos@people.it> writes:

> Il Wed, Mar 10, 2004 at 11:08:22PM +0100, M?ns Rullg?rd ha scritto: 
>> *This message was transferred with a trial version of CommuniGate(tm) Pro*
>> Luca <kronos@people.it> writes:
>> 
>> > Hi,
>> > I'm using linux 2.6.3 with alsalib 1.0.2c. When using alsa output plugin
>> > of XMMS or mplayer the song is played too fast. Using OSS emulation
>> > works fine.
>> >
>> > This is from bootlog:
>> >
>> > intel8x0_measure_ac97_clock: measured 49482 usecs
>> > intel8x0: clocking to 48000
>> 
>> Make sure the programs are using device "default" or "plughw:0,0" (or
>> whatever device numbers you like).  If the programs can't be persuaded
>> to do that they are buggy.  
>
> mplayer is using hw:0,0.

Bug.

> alsa-init: requested format: 44100 Hz, 2 channels, Signed 16-bit (Little-Endian)
> alsa-init: compiled for ALSA-1.0.3
> alsa-init: soundcard set to hw:0
> alsa-init: pcm opend in block-mode
> alsa-init: chunksize set to 1024
> alsa-init: current val=16, fragcount=16
> alsa-init: got buffersize=65536
> alsa9: 44100 Hz/2 channels/4 bpf/65536 bytes buffer/Signed 16 bit Little Endian
>
> It doens't like plugwh:0,0:
>
> alsa-init: requested format: 44100 Hz, 2 channels, Signed 16-bit (Little-Endian)
> alsa-init: compiled for ALSA-1.0.3
> alsa-init: soundcard set to plughw
> alsa-init: pcm opend in block-mode
> alsa-init: unable to set periodsize: Invalid argument

Bug.

> Btw, mplayer from CVS (checked out today) works nicely with -ao alsa1x:
>
> alsa-init: requested format: 44100 Hz, 2 channels, Signed 16-bit (Little-Endian)
> alsa-init: compiled for ALSA-1.0.3
> alsa-init: got device=0, subdevice=0
> alsa-init: 1 soundcard found, using: hw:0,0
> alsa-init: pcm opened in block-mode
> alsa-init: chunksize set to 1024
> alsa-init: fragcount=16
> alsa-init: got buffersize=65536
> alsa1x: 48000 Hz/2 channels/4 bpf/65536 bytes buffer/Signed 16 bit Little Endian
> ...
> [resample] Changing sample rate to 48000Hz
> [resample] Changing sample rate to 48000Hz
> [resample] Using linear interpolation.
>
> So my sound card accept sound only at 48000Hz but old mplayer didn't
> notice that alsa-lib doesn't accept its request for 44100Hz. Correct?

So it seems.

-- 
Måns Rullgård
mru@kth.se



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