Rockbox

  • Status Closed
  • Percent Complete
    0%
  • Task Type Patches
  • Category Music playback
  • Assigned To No-one
  • Operating System Another
  • Severity Low
  • Priority Very Low
  • Reported Version Version 3.3
  • Due in Version Undecided
  • Due Date Undecided
  • Votes
  • Private
Attached to Project: Rockbox
Opened by matsch - 2009-08-07
Last edited by funman - 2009-10-11

FS#10495 - More stable MP3 playing for Sansa Clip v1

This patch reserves the full IRAM for the Codec.
Playing 196kbit/s VBS MP3s is more stable with this patch.
I do not know the reason for this. Either there is interference between CODEC and other loaded memory segments in IRAM or the Codec just needs more space.
Influence on plugins and Fuze is not tested.

Closed by  funman
2009-10-11 13:52
Reason for closing:  Invalid
Additional comments about closing:  

a better fix is in fs#10605

Moving around things in memory does seem to make playback better or worse on the clip, presumably because some area of memory is overwritten and shuffling like this increases the odds that nothing important is corrupted. However I do not think this is an actual fix.

Regarding memory, MP3 needs about 110KB of RAM:

http://www.rockbox.org/twiki/bin/view/Main/CodecMemoryUsage

Since MP3 does not use malloc, lack of memory will cause a compiler error, but cannot cause runtime problems.

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