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Walter Dnes schreef: |
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> On Tue, Mar 21, 2006 at 08:41:44PM +0100, Simon Kellett wrote |
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>> "Walter Dnes" <waltdnes@××××××××.org> writes: |
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>> |
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>>> ... mpg123 complains about not being able to open /dev/dsp ... |
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>> Does "mpg123 -a /dev/sound/dsp" work ? |
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> |
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> Nope. The only change is that now I get "Can't open |
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> /dev/sound/dsp!". |
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> |
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|
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Well, my understanding (which may not be correct, but I /think/ it is) |
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is that /dev/sound/dsp is the sound sequencer created by OSS or ALSA OSS |
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emulation-- if OSS is not enabled somehow, you won't have it, and if the |
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app uses ALSA directly (and not OSS emulation), you won't use it (so you |
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won't notice it's not there). |
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|
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The ebuilds seem to suggest that mpg123 uses OSS (therefore ALSA OSS |
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emulation), whereas mpg321 uses ALSA natively: |
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|
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|
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# $Header: |
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/var/cvsroot/gentoo-x86/media-sound/mpg123/mpg123-0.59s-r10.ebuild,v |
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1.4 2006/03/08 15:46:03 flameeyes Exp $ |
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|
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inherit eutils |
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|
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PATCH_VER=1.5 |
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S="${WORKDIR}/${PN}" |
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|
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DESCRIPTION="Real Time mp3 player" |
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HOMEPAGE="http://www.mpg123.de/" |
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SRC_URI="http://www.mpg123.de/mpg123/${PN}-pre${PV}.tar.gz |
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mirror://gentoo/${P}-gentoo-${PATCH_VER}.tar.bz2" |
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|
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LICENSE="as-is" |
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SLOT="0" |
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KEYWORDS="~alpha ~amd64 ~hppa ~ia64 ~mips ~ppc ~ppc-macos ~ppc64 ~sparc |
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~x86" |
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IUSE="mmx 3dnow esd nas oss" |
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|
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RDEPEND="esd? ( media-sound/esound ) |
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nas? ( media-libs/nas )" |
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|
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# alsa-1 b0rks and it's not a simple fix |
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# alsa? ( media-libs/alsa-lib )" |
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|
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Interestingly, the "alsa" USE flag is commented out, but the "IUSE=" |
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variable contains OSS. |
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|
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More interestingly, the mpg321 ebuild contains no listed dependencies on |
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/either/ ALSA or OSS (or any other sound server)-- which strongly |
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suggests that it's native ALSA, since that is enabled in the kernel by |
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default (whereas OSS is not), indicating that if your soundcard's kernel |
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modules load, mpg321 will work, since it seems to have no explicit |
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additional ALSA or OSS dependencies. |
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|
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less /usr/portage/media-sound/mpg321/mpg321-0.2.10-r3.ebuild |
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# Copyright 1999-2005 Gentoo Foundation |
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# Distributed under the terms of the GNU General Public License v2 |
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# $Header: |
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/var/cvsroot/gentoo-x86/media-sound/mpg321/mpg321-0.2.10-r3.ebuild,v |
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1.1 2005/08/29 09:48:18 flameeyes Exp $ |
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|
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inherit eutils |
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|
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IUSE="" |
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|
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DESCRIPTION="Free MP3 player, drop-in replacement for mpg123" |
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SRC_URI="mirror://sourceforge/${PN}/${P}.tar.gz" |
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HOMEPAGE="http://sourceforge.net/projects/mpg321/" |
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|
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DEPEND="media-libs/libmad |
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media-libs/libid3tag |
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>=media-libs/libao-0.8.0" |
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|
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SLOT="0" |
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LICENSE="GPL-2" |
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KEYWORDS="~alpha ~amd64 -mips ~ppc ~ppc-macos ~ppc64 ~sparc ~x86" |
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|
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PROVIDE="virtual/mpg123" |
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|
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src_unpack() { |
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|
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In any case, do you have ALSA OSS emulation enabled? This requires: |
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|
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1) ALSA OSS emulation elements to be enabled in the kernel, including: |
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|
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<M> Advanced Linux Sound Architecture |
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<M> Sequencer support |
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< > Sequencer dummy client |
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<M> OSS Mixer API |
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<M> OSS PCM (digital audio) API |
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[*] OSS Sequencer API |
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|
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2) Your soundcard to be configured correctly in /etc/modules.d/alsa |
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|
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3) the alsa-oss package (at least; there may be other associated alsa-* |
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packages necessary, but since I install all of them except alsa-driver, |
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I've never investigated which packages are actually necessary to enable |
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each area of the ALSA functionality). |
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|
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If so, it _ /does/ _ work: |
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|
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lsmod |grep snd_ |
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snd_seq_midi 6176 0 |
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snd_opl3_synth 12292 0 |
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snd_seq_instr 6656 1 snd_opl3_synth |
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snd_seq_midi_emul 5504 1 snd_opl3_synth |
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snd_ainstr_fm 2176 1 snd_opl3_synth |
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==>snd_pcm_oss 41760 0 |
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==>snd_mixer_oss 14208 2 snd_pcm_oss |
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==>snd_seq_oss 26880 0 |
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snd_seq_midi_event 5632 2 snd_seq_midi,snd_seq_oss |
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==>snd_seq 42256 8 |
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snd_seq_midi,snd_opl3_synth,snd_seq_instr,snd_seq_midi_emul,snd_seq_oss,snd_seq_midi_event |
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snd_cmipci 27552 1 |
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==>snd_pcm 69128 2 snd_pcm_oss,snd_cmipci |
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snd_page_alloc 7688 1 snd_pcm |
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snd_opl3_lib 8064 2 snd_opl3_synth,snd_cmipci |
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snd_timer 18564 3 snd_seq,snd_pcm,snd_opl3_lib |
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snd_hwdep 6560 1 snd_opl3_lib |
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snd_mpu401_uart 5504 1 snd_cmipci |
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snd_rawmidi 18336 2 snd_seq_midi,snd_mpu401_uart |
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==>snd_seq_device 6284 6 |
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snd_seq_midi,snd_opl3_synth,snd_seq_oss,snd_seq,snd_opl3_lib,snd_rawmidi |
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snd 41316 13 |
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snd_opl3_synth,snd_pcm_oss,snd_mixer_oss,snd_seq_oss,snd_seq,snd_cmipci,snd_pcm,snd_opl3_lib,snd_timer,snd_hwdep,snd_mpu401_uart,snd_rawmidi,snd_seq_device |
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|
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eix alsa-oss |
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* media-libs/alsa-oss |
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Available versions: 1.0.10-r1 ~1.0.11_rc3 |
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Installed: 1.0.11_rc3 |
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Homepage: http://www.alsa-project.org/ |
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Description: Advanced Linux Sound Architecture OSS |
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compatibility layer. |
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|
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# Alsa 0.9.X kernel modules' configuration file. |
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# $Header: |
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/var/cvsroot/gentoo-x86/media-sound/alsa-utils/files/alsa-modules.conf-rc,v |
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1.4 2004/11/16 01:31:22 eradicator Exp $ |
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|
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# ALSA portion |
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# OSS/Free portion |
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|
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## |
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## IMPORTANT: |
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## You need to customise this section for your specific sound card(s) |
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## and then run `update-modules' command. |
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## Read alsa-driver's INSTALL file in /usr/share/doc for more info. |
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## |
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## ALSA portion |
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## alias snd-card-0 snd-interwave |
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## alias snd-card-1 snd-ens1371 |
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## OSS/Free portion |
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## alias sound-slot-0 snd-card-0 |
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## alias sound-slot-1 snd-card-1 |
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## |
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|
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# OSS/Free portion - card #1 |
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## OSS/Free portion - card #2 |
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## alias sound-service-1-0 snd-mixer-oss |
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## alias sound-service-1-3 snd-pcm-oss |
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## alias sound-service-1-12 snd-pcm-oss |
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|
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==> alias /dev/mixer snd-mixer-oss |
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==> alias /dev/dsp snd-pcm-oss |
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==> alias /dev/midi snd-seq-oss |
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|
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# Set this to the correct number of cards. |
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|
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# --- BEGIN: Generated by ALSACONF, do not edit. --- |
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# --- ALSACONF version 1.0.10rc3 --- |
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alias snd-card-0 snd-cmipci |
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options snd-cmipci mpu_port=0x330 |
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alias sound-slot-0 snd-cmipci |
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# --- END: Generated by ALSACONF, do not edit. --- |
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|
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ls /dev/sound |
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adsp audio dsp mixer sequencer sequencer2 |
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|
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mpg123 ./02\ -\ Always.mp3 |
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High Performance MPEG 1.0/2.0/2.5 Audio Player for Layer 1, 2 and 3. |
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Version 0.59s-r10 (2000/Oct/27). Written and copyrights by Michael Hipp. |
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Uses code from various people. See 'README' for more! |
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THIS SOFTWARE COMES WITH ABSOLUTELY NO WARRANTY! USE AT YOUR OWN RISK! |
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Title : Always Artist: U2 |
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Album : 7 Year : 2002 |
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Comment: Genre : Rock |
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|
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Directory: ./ |
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Playing MPEG stream from 02 - Always.mp3 ... |
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Found new ID3 Header |
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MPEG 1.0 layer III, 192 kbit/s, 44100 Hz stereo |
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q^H |
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[0:17] Decoding of 02 - Always.mp3 finished. |
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|
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I don't have mpg321 installed, so can't test it (but I may replace |
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mpg123 with it, since that's mpg321's purpose, apparently). |
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|
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HTH, |
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Holly |
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-- |
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