ALSA lib pcm.c:2175 snd_pcm_open_conf) symbol _snd_pcm_plug_open is not defined inside [builtin]

ALSA lib pcm.c:2175 snd_pcm_open_conf) symbol _snd_pcm_plug_open is not defined inside [builtin]

[asim khan]

Hi,
 Iam using alsa lib version 1.0.22..and Iam running an alsa capture
application.
 if Iam running this standalone application on my arm11 target ..it runs
fine
but when iam runnig this with my complete BD player integrated application
it gives an error
*ALSA lib pcm.c:2175 snd_pcm_open_conf) symbol _snd_pcm_plug_open is not
defined inside [builtin]
cannot open audio device plughw:0,0 (No such device or address).*
**
I googled* *Which explained the errors meant I didn't have the Alsa plugins
set via ALSA_PCM_PLUGINS in make.conf.
I checked on target and x86 but there is no make.conf.

Please let me know what is the problem and what can I do to get rid of this
problem...its bit urgent plz let me know as soon as possible.


--Thanks
Asim

Re: ALSA lib pcm.c:2175 snd_pcm_open_conf) symbol _snd_pcm_plug_open is not defined inside [builtin]

[Clemens Ladisch]

asim khan wrote:
> *ALSA lib pcm.c:2175 snd_pcm_open_conf) symbol _snd_pcm_plug_open is not
> defined inside [builtin]
> cannot open audio device plughw:0,0 (No such device or address).*

alsa-lib's configure script has the option --with-pcm-plugins=... to
specify which plugins should be included.  In your case, the plug
plugin was obviously not included in this list.

(Many embedded application do need the automatic sample rate/format
conversion and use the "hw" device.)


Regards,
Clemens

Re: ALSA lib pcm.c:2175 snd_pcm_open_conf) symbol _snd_pcm_plug_open is not defined inside [builtin]

[Clemens Ladisch]

(please don't top-post)

asim khan wrote:
> ./configure CC=arm_v7_vfp_le-gcc --target=arm-linux --host=i386-linux
> --with-pcm-plugins=dmix --with-pcm-plugins=dsnoop --with-pcm-plugins=plug
> --with-pcm-plugins=softvol --with-pcm-plugins=asym --build=$BUILD
> --enable-static  --enable-static --disable-debug --disable-python
> --prefix=/mtd_rwarea.

--with-pcm-plugins=dmix,dsnoop,plug,softvol,asym


Regards,
Clemens

ALSA lib pcm.c:2175 snd_pcm_open_conf) symbol _snd_pcm_plug_open is not defined inside [builtin]

[asim khan]

Hi,
    ..soory in my previous posting i missed the subject :-)
 Iam using alsa lib version 1.0.22..and Iam running an alsa capture
application.
 if Iam running this standalone application on my arm11 target ..it runs
fine
but when iam runnig this with my complete BD player integrated application
it gives an error
ALSA lib pcm.c:2175 snd_pcm_open_conf) symbol _snd_pcm_plug_open is not
defined inside [builtin]
cannot open audio device plughw:0,0 (No such device or address).

I googled Which explained the errors meant I didn't have the Alsa plugins
set via ALSA_PCM_PLUGINS in make.conf

I have enabled  --with-pcm-plugins  option in my configure script which will
select all pcm-plugins
#!/bin/sh
./configure CC=arm_v7_vfp_le-gcc --target=arm-linux --host=i386-linux
--build=$BUILD --enable-static  --enable-pcm --with-pcm-plugins
--disable-debug --disable-python --prefix=/mtd_rwarea

I have checked using pcm plugins the created library(.so,.a) size is
reduced...
                              but still Iam getting above same error ALSA
lib pcm.c:2175 snd_pcm_open_conf) symbol _snd_pcm_plug_open is not defined
inside [builtin]

Please let me know is there any other thing i can check to solve this
problem

---Thanks
Asim

Re: ALSA lib pcm.c:2175 snd_pcm_open_conf) symbol _snd_pcm_plug_open is not defined inside [builtin]

[Clemens Ladisch]

asim khan wrote:
> I have enabled  --with-pcm-plugins  option in my configure script which will
> select all pcm-plugins
> #!/bin/sh
> ./configure CC=arm_v7_vfp_le-gcc --target=arm-linux --host=i386-linux
> --build=$BUILD --enable-static  --enable-pcm --with-pcm-plugins
> --disable-debug --disable-python --prefix=/mtd_rwarea

This is the same as --with-pcm-plugins="".

Use "--with-pcm-plugins=all", leave it as the default.


Regards,
Clemens