[mad-dev] mad on arm processor -- strange problems.

[Reza Naima]

> I answered this in private email: I think the problem is that you are 
> refilling your stream buffer without copying the unconsumed data from 
> the end of the previous buffer.

Right on the money -- I changed the code to accomodate, and it seems to 
be working now.  I actually pre-fetch blocks of mp3 into buffers via a 
seperate thread, so copying them around wouldn't work -- Instead, I have 
the buffers overlap by 2880+MAD_BUFFER_GUARD bytes.  Works like a charm.

So, now, it actually gets through the entire MP3 before it dies. 
However, it still sounds like shit.  It makes a clicking/swooshing sound 
at about 4Hz, but you can clearly hear the audio in the background. 
Could this be a result of the simplified scale() function in minimad 
(which I'm currently using?)  Here are all the specs I have to go on for 
the rio's audio device (from some source code) :


// Must output buffers of 4608 bytes or audio driver barfs.
// Sample rate is always 44.1k, format always 16-bit stereo, alternating
// left/right samples.


and this is the contents of /proc/audio

buffers   : 32
buf size  : 4608
samples   : 27767808
interrupts: 0
wakeups   : 0
fifo errs : 0
buffer hwm: 31
first fill: 1
below half: 18

Thanks,
Reza