[alsa-devel] problems about converting sample rates when using ALSA-LIB

[longer]

Hi all,

   I have a problem when using ALSA lib . The problem is :

     My ALSA driver only support a special sample rate , so ALSA lib must   
    convert sample rates. But My driver don't get any audio data. When           
    tracing  the code of ALSA lib (alsa-lib-1.0.23), I found that : It mmap 
    a address from my driver , but writing audio data to another address 
    instead of that mmaped address.

   I think this is why my driver don't get any audio data . But I don't know 
 why it don't write audio data to that mmaped address. 

 Can you help me ?  Any advices  would help me a lot.

 Thank you,
 longer.zhou