[Alsa-user] subsequent call to snd_pcm_hw_params() fails

[satish]

Hi All,

  I got ALSA driver version 1.0.6 installed on my computer.
  I used the API to write very simple recording and playing programs.

  But I can't seem to get both recording and playing to work at the
  same time.  I can open the audio device for both recording and playing,
  and set up (some) hardware parameters for both recording and playing.
  But I can only run

    snd_pcm_hw_params()

  either on the recording side *or* the playback side only once.

  Regardless of the order the 2nd call to snd_pcm_hw_params() fails.

  Other parameters: S16_LE, interleaved mode, 2 channel(stereo)
  I even tried for different PCM devices plughw:0,0/default/hw:0,0 etc.



  Can anybody suggest me about this issue.


Thanks in advance,
satish.