hi, i also met such issue,use latest alsa-lib and make sure /dev/snd/* right permissions.
thanks --wang xingchao 2010/6/9 pramod <[email protected]> > After changing the asound.conf slightly i am getting a permission > denied error now. > > Can anyone please tell me how to change the "group" field of the > softlink in android. > if i use chown to change group to "audio" then its changing the > permission of the source file not the softlink. > The chown -h option is missing in andriod, or else it could have been > used. > > Thanks, > Pramod. > > On Jun 7, 2:44 pm, pramod <[email protected]> wrote: > > Thanks for the reply. > > The contents of my /dev/snd are given below. > > > > lrwxrwxrwx root root 1970-01-01 00:00 timer -> /dev/ > > timer > > lrwxrwxrwx root root 1970-01-01 00:00 controlC0 -> / > > dev/controlC0 > > lrwxrwxrwx root root 1970-01-01 00:00 pcmC0D0p -> / > > dev/pcmC0D0p > > lrwxrwxrwx root root 1970-01-01 00:00 pcmC0D0c -> / > > dev/pcmC0D0c > > > > I am creating soft link from the /dev/ directory. > > are these device nodes not enough?? > > > > Pramod > > > > On Jun 7, 2:28 pm, Pavan Savoy <[email protected]> wrote: > > > > > ls /dev/snd/ should show up both pcmCxDxP/C sort of pcm devices and > also > > > Controlx sort of control devices, for you to do an amixer upon it. > > > > > alsa_aplay -L here I suppose shows only pcm devices you have ? > > > > > On Mon, Jun 7, 2010 at 2:52 PM, pramod <[email protected]> wrote: > > > > Hi All, > > > > > > I am currently writing the asound.conf file for my hardware Sigma > > > > 8654. > > > > The alsa utils are working fine and detecting the card. > > > > > > # alsa_aplay -L > > > > default:CARD=EM8XXX > > > > EM8xxx card, EM8xxx > > > > Default Audio Device > > > > null > > > > Discard all samples (playback) or generate zero samples (capture) > > > > # > > > > # alsa_aplay -l > > > > **** List of PLAYBACK Hardware Devices **** > > > > card 0: EM8XXX [EM8xxx card], device 0: em8xxx [EM8xxx] > > > > Subdevices: 2/2 > > > > Subdevice #0: subdevice #0 > > > > Subdevice #1: subdevice #1 > > > > > > Using the alsa_amixer i am able to get the below output. > > > > > > # alsa_amixer contents > > > > numid=1,iface=MIXER,name='Hardware Master Playback Volume' > > > > ; type=INTEGER,access=rw------,values=2,min=0,max=73,step=0 > > > > : values=49,49 > > > > numid=3,iface=MIXER,name='IEC958 Playback Con Mask' > > > > ; type=IEC958,access=r-------,values=1 > > > > : values=[AES0=0xff AES1=0xff AES2=0xff AES3=0xff] > > > > numid=4,iface=MIXER,name='IEC958 Playback Switch' > > > > ; type=BOOLEAN,access=rw------,values=1 > > > > : values=on > > > > numid=5,iface=MIXER,name='Decoder Weight' > > > > ; type=INTEGER,access=rw------,values=2,min=0,max=73,step=0 > > > > : values=0,0 > > > > numid=2,iface=PCM,name='IEC958 Playback Default' > > > > ; type=IEC958,access=rw------,values=1 > > > > : values=[AES0=0x00 AES1=0x00 AES2=0x00 AES3=0x00] > > > > > > Looking at the above values i have written below configuration. > > > > > > pcm.AndroidPlayback { > > > > type hooks > > > > slave.pcm { > > > > type hw > > > > card 0 > > > > device 0 > > > > } > > > > hooks.0 { > > > > type ctl_elems > > > > hook_args [ > > > > { > > > > name 'Hardware Master Playback Volume' > > > > value.0 49 > > > > value.1 49 > > > > } > > > > { > > > > name 'IEC958 Playback Default' > > > > value [ 0x00 0x00 0x00 0x00 ] > > > > } > > > > { > > > > name 'IEC958 Playback Con Mask' > > > > value [ 0xff 0xff 0xff 0xff ] > > > > } > > > > { > > > > name 'IEC958 Playback Switch' > > > > value true > > > > } > > > > { > > > > name 'Decoder Weight' > > > > value.0 0 > > > > value.1 0 > > > > } > > > > > > ] > > > > } > > > > } > > > > > > But i am getting still the below errors while booting android. > > > > > > E/ALSALib ( 1332): external/alsa-lib/src/control/control.c:909: > > > > (snd_ctl_open_noupdate) Invalid CTL AndroidOut > > > > E/AudioHardwareALSA( 1332): Unable to attach mixer to device > > > > AndroidOut: No such file or directory > > > > E/AudioHardwareALSA( 1332): Unable to attach mixer to device default: > > > > No such file or directory > > > > E/ALSALib ( 1332): external/alsa-lib/src/control/control.c:909: > > > > (snd_ctl_open_noupdate) Invalid CTL AndroidIn > > > > E/AudioHardwareALSA( 1332): Unable to attach mixer to device > > > > AndroidIn: No such file or directory > > > > E/AudioHardwareALSA( 1332): Unable to attach mixer to device default: > > > > No such file or directory > > > > > > Please provide some directions for solving the above issue. > > > > Thanks in advance. > > > > Pramod > > > > > > -- > > > > unsubscribe: > > > > [email protected]<android-porting%[email protected]> > > > > website:http://groups.google.com/group/android-porting > > > > > -- > > > --Pavan Savoy > > -- > unsubscribe: > [email protected]<android-porting%[email protected]> > website: http://groups.google.com/group/android-porting > -- unsubscribe: [email protected] website: http://groups.google.com/group/android-porting
