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| | |-+  Speed-up of Vorbis-decoding by the AoTuV-programmer:
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Author Topic: Speed-up of Vorbis-decoding by the AoTuV-programmer:  (Read 1594 times)

Offline Elbart

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Speed-up of Vorbis-decoding by the AoTuV-programmer:
« on: February 05, 2009, 09:50:03 AM »
http://www.hydrogenaudio.org/forums/index.php?s=&showtopic=60956&view=findpost&p=612550

Anybody looked into this? Since it's specifically a "mod" of a rather recent Rockbox-build (19888)
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Offline saratoga

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Re: Speed-up of Vorbis-decoding by the AoTuV-programmer:
« Reply #1 on: February 05, 2009, 11:05:34 AM »
Woah nice find.
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Offline vinnie97

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Re: Speed-up of Vorbis-decoding by the AoTuV-programmer:
« Reply #2 on: February 07, 2009, 04:28:26 AM »
Has this patch been incorporated into new builds?
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Offline cool_walking_

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Re: Speed-up of Vorbis-decoding by the AoTuV-programmer:
« Reply #3 on: February 07, 2009, 05:30:53 AM »
No, as you can see by the lack of mention in the SVN log on the front page.
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Offline saratoga

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Re: Speed-up of Vorbis-decoding by the AoTuV-programmer:
« Reply #4 on: February 07, 2009, 09:56:44 AM »
It only speeds up the low bitrate coding features of Vorbis, and it uses up a good bit of IRAM so I'm hesitant to commit it as is.  Ideally, it should be made to only use that IRAM if the low bitrate features are actually in use since relatively few files will benefit from them.
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Offline vinnie97

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Re: Speed-up of Vorbis-decoding by the AoTuV-programmer:
« Reply #5 on: February 07, 2009, 03:00:30 PM »
How low of a bitrate are we talking here?  I use 80kbps on a regular basis.

OK, just checked...it appears to be lower in the 32-48kbps range.  I haven't checked quality there lately, not sure how much it's improved.
« Last Edit: February 07, 2009, 03:02:54 PM by vinnie97 »
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