- Status Closed
- Percent Complete
- Task Type Patches
- Category Codecs
- Assigned To No-one
- Operating System SW-codec
- Severity Low
- Priority Very Low
- Reported Version Daily build (which?)
- Due in Version Undecided
-
Due Date
Undecided
- Votes
- Private
FS#9498 - AAC IRAM improvements
This patch reorganizes variables by removing a seldom used array while putting a more frequently used one in IRAM.
This gives a ~2% speedup on PP5024, but I would be interested in any Coldfire results, where the difference will hopefully be larger.
Closed by Buschel
2011-06-08 20:00
Reason for closing: Out of Date
Additional comments about closing: Warning: Undefined array key "typography" in /home/rockbox/flyspray/plugins/dokuwiki/inc/parserutils.php on line 371 Warning: Undefined array key "camelcase" in /home/rockbox/flyspray/plugins/dokuwiki/inc/parserutils.php on line 407
2011-06-08 20:00
Reason for closing: Out of Date
Additional comments about closing: Warning: Undefined array key "typography" in /home/rockbox/flyspray/plugins/dokuwiki/inc/parserutils.php on line 371 Warning: Undefined array key "camelcase" in /home/rockbox/flyspray/plugins/dokuwiki/inc/parserutils.php on line 407
The patch (and even the idea behind)
does not apply to the reworked
libfaad.
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Results on H300 (tested with a VBR AAC track, ~190kbps): SVN 188% realtime, +patch 192% realtime. So about the same speedup as on PP502x.
Same test on iPod G2: SVN 155.5% realtime, +patch 157.0% realtime, i.e. about 1% speedup on PP5002.
In that case I will probably save this extra memory and try to use it for AAC-HE and/or dual core optimizations later on.