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Re: playing CDROM music questions

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Haines Brown (12024-01-08):
> I find that often (such as wiki.debian.org/CDDVD) I'm told to mount 

Please do not remove the protocol part from the URL, it makes
auto-detection and copy-pasting more annoying.

> the cdrive.

I do not see this page suggesting to mount audio CDs. Audio CDs do not
contain a files system, nor do they contain the synchronization
information necessary for a reliable read.

There is a hack in the kernel to mount them and present audio track as
PCM files but it is a hack, I do not know if it is enabled by default
and I do not recommend too use it.

>	      But I can play cds without mounting. Wny is mounting 
> sometimes recommended?

Either people are wrong to recommend it or you are mistaken in thinking
they recommend it.

> I wanted to use aplay to play music on cdrom, but have concluded 
> it cannot be done in any straightforward way. Why not?

Because aplay requires the data to be available as a plain stream of
octets and the kernel does not provide that interface for audio CDs.

> The mplayer command $ mplayer -cdrom-device /dev/sr0 cdda:// works. On 
> my system it relies on alsa. However, about every 15 seconds the the 
> process stops for about one second ane the drive LED flashes on. In 
> the mplayer configuration I do D not see anything about buffer size.

Search for “cache” in the man page.

> To simplify my life, I created a ~/scripts/play file. It is in my 
> PATH. The file has this content:
> 
>   #!/bin/sh
> 
>   mplayer /dev/sr0 cdda://
> 
>   exit 0
> 
> But the $ play command only returns the aplay -help info. Why won't 
> the script work?

You forgot the “-cdrom-device” option. And judging from what you are
saying you need to learn how $PATH works.

But unless you cannot spare 60 megaoctets somewhere, save yourself a lot
of trouble: just run cdparanoia -B then opusenc and put back the audio
CD at the back of the shelf where it belongs.

Regards,

-- 
  Nicolas George

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Thread

playing CDROM music questions Haines Brown <haines@histomat.net> - 2024-01-08 17:20 +0100
  Re: playing CDROM music questions Nicolas George <george@nsup.org> - 2024-01-08 17:30 +0100
    Re: playing CDROM music questions Haines Brown <haines@histomat.net> - 2024-01-08 22:00 +0100
      Re: playing CDROM music questions Michael Kjörling <2695bd53d63c@ewoof.net> - 2024-01-08 22:20 +0100
        Re: playing CDROM music questions Stefan Monnier <monnier@iro.umontreal.ca> - 2024-01-09 01:50 +0100
        Re: playing CDROM music questions Nicolas George <george@nsup.org> - 2024-01-09 13:30 +0100
          Re: playing CDROM music questions Nicolas George <george@nsup.org> - 2024-01-09 16:20 +0100
          Re: [OFFTOPIC] Filling the FAT (was: playing CDROM music questions) Stefan Monnier <monnier@iro.umontreal.ca> - 2024-01-09 17:00 +0100
            Re: [OFFTOPIC] Filling the FAT (was: playing CDROM music questions) David Wright <deblis@lionunicorn.co.uk> - 2024-01-09 17:10 +0100
              Re: [OFFTOPIC] Filling the FAT Stefan Monnier <monnier@iro.umontreal.ca> - 2024-01-09 21:40 +0100
                Re: [OFFTOPIC] Filling the FAT David Wright <deblis@lionunicorn.co.uk> - 2024-01-10 01:40 +0100
            Re: [OFFTOPIC] Filling the FAT (was: playing CDROM music questions) <tomas@tuxteam.de> - 2024-01-09 18:20 +0100
      Re: playing CDROM music questions "Roy J. Tellason, Sr." <roy@rtellason.com> - 2024-01-09 03:50 +0100
      Re: playing CDROM music questions Nicolas George <george@nsup.org> - 2024-01-09 13:30 +0100
  Re: playing CDROM music questions Michel Verdier <mv524@free.fr> - 2024-01-08 17:40 +0100
    Re: playing CDROM music questions Haines Brown <haines@histomat.net> - 2024-01-08 22:10 +0100
  Re: playing CDROM music questions Michael Kjörling <2695bd53d63c@ewoof.net> - 2024-01-08 17:40 +0100
    Re: playing CDROM music questions Nicolas George <george@nsup.org> - 2024-01-08 17:50 +0100
      CD-DA sector addressing, was Re: playing CDROM music questions "Thomas Schmitt" <scdbackup@gmx.net> - 2024-01-08 20:10 +0100
    Re: playing CDROM music questions Haines Brown <haines@histomat.net> - 2024-01-08 22:10 +0100

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