Hello Mark
On 9/6/2011 11:31 PM, Mark Brown wrote:
pcm_read error: For this I have seen a bug is locked in the
bugzila(*Bug 472469*<show_bug.cgi?id=472469> -arecord: input/output error ). and the status is closed saying insufficient data. Could you please let me know what is the meaning of this bug? Is it like, data is not available in the buffer and pcm_read from the user space fails? But why this situation will arise?
You'll need to investigate the bug. .
I analyzed the bug and found that if I use arecord in non-blocking mode, it works fine.
#arecord -f dat --nonblock > t
Working in a non-blocking mode means there is no data available in ring buffer and returning -EAGAIN from the alsa, so application is wating for data to arrive in the ring buffer. Now it is not clear to me why this situation will arise? I have checked the clock and all the clock are intact. The calculation for number of bytes received in a sec is correct.
Best Regards Rajeev