Date: Sun, 1 May 2011 12:30:15 GMT From: Pan Tsu <inyaoo@gmail.com> To: freebsd-ports-bugs@FreeBSD.org Subject: Re: ports/156747: multimedia/mplayer: fix 24-bits OSS some improvements Message-ID: <201105011230.p41CUFbY096454@freefall.freebsd.org>
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The following reply was made to PR ports/156747; it has been noted by GNATS.
From: Pan Tsu <inyaoo@gmail.com>
To: Zhihao Yuan <lichray@gmail.com>
Cc: bug-followup@freebsd.org
Subject: Re: ports/156747: multimedia/mplayer: fix 24-bits OSS some improvements
Date: Sun, 01 May 2011 16:26:27 +0400
Zhihao Yuan <lichray@gmail.com> writes:
> In this patch, I just make everything FreeBSD-only (since these macros
> have different meanings from those in OSS v4).
So, they'd break mplayer with 24bit samples on 4front implementation,
i.e. audio/oss?
> I have tested the signed 24-bit audio, OK. But I don't have any
> unsigned audio, since PCM is signed-only.
You can still feed unsigned 24bit samples to ao_oss. For example,
$ mplayer -af format=u24le -msglevel all=-1:ao=9 foo.ogg
Trying every known audio driver...
ao2: 44100 Hz 2 chans u24le
audio_setup: using '/dev/dsp' dsp device
audio_setup: using '/dev/mixer' mixer device
audio_setup: using 'pcm' mixer device
audio_setup: sample format: u24le (requested: u24le)
audio_setup: using 2 channels (requested: 2)
audio_setup: using 44100 Hz samplerate (requested: 44100)
audio_setup: frags: 32/32 (4092 bytes/frag) free: 130944
which seems to work fine
$ sysctl hw.snd.verbose=2
$ fgrep -A3 mplayer /dev/sndstat
pcm1:play:dsp1.p0[pcm1:virtual:dsp1.vp2]: spd 44100, fmt 0x00240000/0x00201000, flags 0x1000010c, 0x00000023, pid 34306 (mplayer)
interrupts 0, underruns 0, feed 4810, ready 114660 [b:0/0/0|bs:130944/4092/32]
channel flags=0x1000010c<RUNNING,TRIGGERED,BUSY,VIRTUAL>
{userland} -> feeder_root(0x00240000) -> feeder_format(0x00240000 -> 0x00201000) -> feeder_volume(0x00201000) -> {hardware}
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