Mono streams

Mono streams

[Nagar, Mrigendra]

Hi,
I have recently started working on ALSA libraries. I am facing following problems. It would be great help If some one can help me out.
1) Mono streams:
    If I try to play A MONO streams. It plays Faster.
    My driver configuration is
i)                     Blocking mode
ii)                   Access mode is interleaved
iii)                  No of channels are set to 1
2) Buffer under run while playing Mono stream.
    i) Blocking mode
    i) Hardware buffer size is 65536
    ii) Periods is set to 64
     I always encounter buffer under run If I try to decode and play a stream frame by frame. Frame size is constant and it is 2048. If I club two frames and
Try to play it. It plays well. In second case buffer size becomes 4096.
My question is: Is there any optimal buffer size. Which one should set to have smooth payout?

Regards,
Mrigen

Re: Mono streams

[Liam Girdwood]

On Mon, 2008-05-12 at 18:35 +0530, Nagar, Mrigendra wrote:
> Hi,
> I have recently started working on ALSA libraries. I am facing following problems. It would be great help If some one can help me out.
> 1) Mono streams:
>     If I try to play A MONO streams. It plays Faster.
>     My driver configuration is
> i)                     Blocking mode
> ii)                   Access mode is interleaved
> iii)                  No of channels are set to 1

It sounds like your hardware is playing mono as stereo. Check your
driver as it may always play stereo regardless of the requested number
of channels.

Liam