- Status Closed
- Percent Complete
- Task Type Patches
- Category Codecs
- Assigned To No-one
- Operating System All players
- Severity Low
- Priority Very Low
- Reported Version Release 3.9
- Due in Version Undecided
-
Due Date
Undecided
- Votes
- Private
FS#12463 - Speed up FLAC multichannel
This patch changes the IRAM usage to speed up FLAC multichannel decoding especially on targets with large IRAM. Multichannel testfiles can be found here: download.linnrecords.com/test/flac/surround88.aspx and download.linnrecords.com/test/flac/ForUntoUsSurround88.aspx
surround88:
iPod Video (PP5022) 28.3 → 25.7 MHz (svn / patch)
iPod nano2G (SL5870x) 33.6 → 27.3 (svn / patch)
ForUntoUsSurround88:
iPod Video (PP5022) 101.7 → 98.7 MHz (svn / patch)
iPod nano2G (SL5870x) 97.6 → 90.2 (svn / patch)
I would like to have some measurements for MCF5249 and MCF5250 before submitting this.
flac_iram_v07.patch
(3.6 KiB)
Closed by Buschel
2011-12-19 19:48
Reason for closing: Fixed
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
2011-12-19 19:48
Reason for closing: Fixed
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
Submitted with r31367.
Loading...
Available keyboard shortcuts
- Alt + ⇧ Shift + l Login Dialog / Logout
- Alt + ⇧ Shift + a Add new task
- Alt + ⇧ Shift + m My searches
- Alt + ⇧ Shift + t focus taskid search
Tasklist
- o open selected task
- j move cursor down
- k move cursor up
Task Details
- n Next task
- p Previous task
- Alt + ⇧ Shift + e ↵ Enter Edit this task
- Alt + ⇧ Shift + w watch task
- Alt + ⇧ Shift + y Close Task
Task Editing
- Alt + ⇧ Shift + s save task
plain svn (r31365):
surround88.flac
56343 of 56343
Decode time - 18.35s
File duration - 56.34s
307.02% realtime
40.44MHz needed for realtime
ForUntoUsSurround88.flac
30104 of 30104
Decode time - 32.08s
File duration - 30.10s
93.82% realtime
132.36MHz needed for realtime
with the patch:
surround88.flac
56343 of 56343
Decode time - 12.88s
File duration - 56.34s
437.42% realtime
28.39MHz needed for realtime
ForUntoUsSurround88.flac
30104 of 30104
Decode time - 27.09s
File duration - 30.10s
111.11% realtime
111.76MHz needed for realtime
Sound is still OK
Tested by wodz on MCF5249:
surround88.flac 309.22% realtime 40.16MHz needed for realtime
ForUntoUsSurround88.flac 94.44% realtime 131.49MHz needed for realtime
Same speed w/ and w/o patch.