I updated my ALSA driver, libs and utils to 1.0.15, but when I use dmix of aplay, it still complaints the error:
ALSA lib pcm_direct.c:790:(snd_pcm_direct_initialize_slave) slave plugin does not support mmap interleaved or mmap noninterleaved accessALSA lib pcm_dmix.c:864:(snd_pcm_dmix_open) unable to initialize slaveaplay: main:547: audio open error: Invalid argument
I don't think that it's sound card doesn't support this mmap. Dmix is a soft mixer, right? So where should I start to fix this problem.Any comments or advices are welcome.
BRFeng
在2007-12-05，"Tobin Davis" <tdavis@xxxxxxxxxxxx> 写道：
First and foremost, you are running on a version that is really old (byLinux standards). The current release is 1.0.15. I'd suggest upgradingand seeing if that solves your issue. Repost if it doesn't.
Tobin
On Wed, 2007-12-05 at 14:23 +0800, feng_tian wrote:
> Hi, all:> I have a problem with dmix of alsa. > I'm using alsa v1.0.11rc2 now. And make it running on ATMEL AT91SAM9260EK board. It runs ok without Dmix. But when I tried:> bash> aplay -D dmixer test.wav> The errors are:> > ALSA lib pcm_direct.c:790:(snd_pcm_direct_initialize_slave) slave plugin does not support mmap interleaved or mmap noninterleaved access> ALSA lib pcm_dmix.c:864:(snd_pcm_dmix_open) unable to initialize slave> aplay: main:547: audio open error: Invalid argument> > The configuration of my alsa in /etc/asound.con is:> > pcm.card0 {> type hw> card 0> }> > pcm.!default {> type plug> slave.pcm "dmixer"> }> > pcm.dmixer {> type dmix> ipc_key 1024> slave {> pcm "hw:0,0"> format S16_LE> period_time 0> period_size 1024> buffer_size 4096> > rate 22050 > }> bindings {> 0 0> 1 1> }> }> ctl.dmixer {> type hw> card 0> device 0> }> pcm.dsp {> type plug> slave.pcm "dmixer" #use our new PCM here> }> ctl.mixer{> type hw> card 0> }> bash> aplay -L> gives:> > PCM list:> hw {> @args.0 CARD> @args.1 DEV> @args.2 SUBDEV> @args.CARD {> type string> default {> @func getenv> vars {> 0 ALSA_PCM_CARD> 1 ALSA_CARD> }> default {> @func refer> name 'defaults.pcm.card'> }> }> }> @args.DEV {> type integer> default {> @func igetenv> vars {> 0 ALSA_PCM_DEVICE> }> default {> @func refer> name 'defaults.pcm.device'> }> }> }> @args.SUBDEV {> type integer> default {> @func refer> name 'defaults.pcm.subdevice'> }> }> type hw> card $CARD> device $DEV> subdevice $SUBDEV> }> plughw {> @args.0 CARD> @args.1 DEV> @args.2 SUBDEV> @args.CARD {> type string> default {> @func getenv> vars {> 0 ALSA_PCM_CARD> 1 ALSA_CARD> }> default {> @func refer> name 'defaults.pcm.card'> }> }> }> @args.DEV {> type integer> default {> @func igetenv> vars {> 0 ALSA_PCM_DEVICE> }> default {> @func refer> name 'defaults.pcm.device'> }> }> }> @args.SUBDEV {> type integer> default {> @func refer> name 'defaults.pcm.subdevice'> }> }> type plug> slave.pcm {> type hw> card $CARD> device $DEV> subdevice $SUBDEV> }> }> plug {> @args.0 SLAVE> @args.SLAVE {> type string> }> type plug> slave.pcm $SLAVE> }> shm {> @args.0 SOCKET> @args.1 PCM> @args.SOCKET {> type string> }> @args.PCM {> type string> }> type shm> server $SOCKET> pcm $PCM> }> tee {> @args.0 SLAVE> @args.1 FILE> @args.2 FORMAT> @args.SLAVE {> type string> }> @args.FILE {> type string> }> @args.FORMAT {> type string> default raw> }> type file> slave.pcm $SLAVE> file $FILE> format $FORMAT> }> file {> @args.0 FILE> @args.1 FORMAT> @args.FILE {> type string> }> @args.FORMAT {> type string> default raw> }> type file> slave.pcm null> file $FILE> format $FORMAT> }> null {> type null> }> cards 'cards.pcm'> front 'cards.pcm.front'> rear 'cards.pcm.rear'> center_lfe 'cards.pcm.center_lfe'> side 'cards.pcm.side'> surround40 'cards.pcm.surround40'> surround41 'cards.pcm.surround41'> surround50 'cards.pcm.surround50'> surround51 'cards.pcm.surround51'> surround71 'cards.pcm.surround71'> iec958 'cards.pcm.iec958'> spdif 'cards.pcm.iec958'> modem 'cards.pcm.modem'> phoneline 'cards.pcm.phoneline'> dmix 'cards.pcm.dmix'> dsnoop 'cards.pcm.dsnoop'> card0 {> type hw> card 0> }> default {> type plug> slave.pcm dmixer> }> dmixer {> type dmix> ipc_key 1024> slave {> pcm 'hw:0,0'> format S16_LE> period_time 0> period_size 1024> buffer_size 4096> rate 22050> }> bindings {> 0 0> 1 1> }> }> dsp {> type plug> slave.pcm dmixer> }> Is there anyone experienced in this kind of error? Any helps or advices is wecome.> > BR> Feng> _______________________________________________> Alsa-devel mailing list> Alsa-devel@xxxxxxxxxxxxxxxx> http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
-- Tobin Davis
I'm having a tax-deductible experience! I need an energy crunch!!_______________________________________________Alsa-devel mailing listAlsa-devel@xxxxxxxxxxxxxxxxxxxx://mailman.alsa-project.org/mailman/listinfo/alsa-devel_______________________________________________Alsa-devel mailing listAlsa-devel@xxxxxxxxxxxxxxxxxxxx://mailman.alsa-project.org/mailman/listinfo/alsa-devel
