[nas] native alsa bottom-end

[Jon Trulson]

On Fri, 12 May 2006, Paul Fox wrote:

> i wrote:
> > ... currently i'm having a very odd problem where i
> > can play sounds via nasd just fine, but can't control the volume.
>
>
> okay, i've done some stracing, and it looks a lot like nasd isn't
> actually _doing_ anything when it gets the command.  i've put strace
> output below.  i had debug set to 9, so the output's a little messy.
> but i don't see any ioctl calls that represent the "set device 1 gain 50"
> operation i did with auctl.  (note:  i currently have the daemon
> set to release the device.  it doesn't work either way.)
>
> anyone else seen this type of thing?
>
> paul
>
> select(128, [0 1], NULL, NULL, NULL)    = 1 (in [0])
> gettimeofday({1147477219, 708034}, NULL) = 0
> accept(0, 0, NULL)                      = 4
> getpeername(4, {sa_family=AF_INET, sin_port=htons(4682), sin_addr=inet_addr("127.0.0.1")}, [16]) = 0
> setsockopt(4, SOL_TCP, TCP_NODELAY, [1], 4) = 0
> fcntl64(4, F_SETFL, O_RDONLY|O_NONBLOCK) = 0
> select(128, [0 1 4], NULL, NULL, NULL)  = 1 (in [4])
> read(4, "l\0\2\0\2\0\0\0\0\0\34\10", 4092) = 12
> writev(4, [{"\1\0\2\0\2\0K\0\1\0\0\0\0\0@\0\377\377?\0\210\23D\254*"..., 308}], 1) = 308
> select(128, [0 1 4], NULL, NULL, NULL)  = 1 (in [4])
> read(4, "\3\0\r\0\"\0\0\0\0\0\10\0\1\0\0\0\220\254\217\277\310\244"..., 4096) = 56
> writev(4, [{"\1\0\2\0\0\0\0\0\355\255\4\10()\7\10\4\0\0\0\0\0\0\0\300"..., 32}], 1) = 32
> select(128, [0 1 4], NULL, NULL, NULL)  = 1 (in [4])
> read(4, "!\0\1\0", 4096)                = 4
> writev(4, [{"\1\0\3\0\0\0\0\0\0\0\0\0()\7\10\4\0\0\0\1\0\0\0\3001\305"..., 32}], 1) = 32
> select(128, [0 1 4], NULL, NULL, NULL)  = 1 (in [4])
> read(4, "", 4096)                       = 0
> close(4)                                = 0

   Looks like it saw the proto and promptly ignored it.  Was there an
   active flow at the time?  I believe that is a requirement before the
   device will be opened, if ReleaseDevice is enabled.


-- 
Jon Trulson    mailto:jon at radscan.com
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