Jens Arnold
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87f5359d60
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Shuffle some instructions around for that extra percent of performance. Fix a bunch of comments.
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@15216 a1c6a512-1295-4272-9138-f99709370657
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2007-10-19 22:57:19 +00:00 |
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Jens Arnold
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5d066590cc
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APE codec: Assembler optimised predictor for coldfire. Heavily based on the arm version atm, instruction reordering will probably allow for a bit more speedup soon. Speedup: -c1000: 177% -> 210%, -c2000: 135% -> 147%, -c3000: 97% -> 103%.
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@15211 a1c6a512-1295-4272-9138-f99709370657
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2007-10-19 21:35:07 +00:00 |
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Jens Arnold
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2e9c77cc2a
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APE codec: Further optimised filtering yields 3..4% speedup for -c2000 (now 135% realtime), -c3000 (now 97% realtime) and higher modes. Single 32 bit stores are faster than movem/lea in IRAM.
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@15200 a1c6a512-1295-4272-9138-f99709370657
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2007-10-19 07:30:55 +00:00 |
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Jens Arnold
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2640bdb262
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APE codec: Assembler optimised vector math routines for coldfire. -c2000 is now usable at 130% realtime (was 107%), -c3000 is near realtime (93%, was 64%). -c1000 doesn't change.
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@15194 a1c6a512-1295-4272-9138-f99709370657
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2007-10-18 22:37:33 +00:00 |
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Dave Chapman
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cee61b57c8
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Remove some unused code
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@13630 a1c6a512-1295-4272-9138-f99709370657
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2007-06-14 22:35:01 +00:00 |
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Dave Chapman
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283738086d
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Oops, forgot to set keywords prop
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@13627 a1c6a512-1295-4272-9138-f99709370657
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2007-06-13 22:03:28 +00:00 |
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Dave Chapman
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6b713820c1
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ARM assembler predictor decoding function. This increases my -c1000 test track from around 94% realtime on an ipod to around 104% realtime, but yields only a tiny speedup (453% to 455%) on the Gigabeat. Including this optimisation, total decoding time for my 245.70s -c1000 test track on an ipod is 236.06s, with the predictor decoding taking 51.40s of that time - meaning the predictor decoding is only about 22% of the total decoding time.
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@13626 a1c6a512-1295-4272-9138-f99709370657
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2007-06-13 22:02:34 +00:00 |
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Dave Chapman
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601ede7f9c
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C optimisations to the predictor decoding - create a single function for decoding stereo streams, and reorganise to minimise the number of variables used. My -c1000 test track now decodes at 93% realtime on PortalPlayer (was 78%), 187% on Coldfire (was 170%) and 447% on Gigabeat (was 408%).
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@13608 a1c6a512-1295-4272-9138-f99709370657
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2007-06-10 08:55:16 +00:00 |
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Dave Chapman
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6131996538
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Define and use a local APE_MAX function to make the standalone demac decoder compile again.
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@13601 a1c6a512-1295-4272-9138-f99709370657
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2007-06-09 00:58:15 +00:00 |
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Dave Chapman
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7b1d90a851
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Seeking and resume support for Monkey's Audio
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@13597 a1c6a512-1295-4272-9138-f99709370657
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2007-06-08 22:35:26 +00:00 |
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Dave Chapman
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c995ae8026
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Make v3.97 APE files work in Rockbox
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@13571 a1c6a512-1295-4272-9138-f99709370657
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2007-06-06 17:46:49 +00:00 |
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Dave Chapman
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8dcd6058c8
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Correct a comment (thanks to Markun for spotting)
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@13569 a1c6a512-1295-4272-9138-f99709370657
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2007-06-06 08:53:55 +00:00 |
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Dave Chapman
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520274219a
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Initial commit of Monkey's Audio (.ape/.mac) support. Note that Monkey's is an extremely CPU-intensive codec, and that the decoding speed is directly related to the compression level (-c1000, -c2000, -c3000, -c4000 or -c5000) used when encoding the file. Current performance is: -c1000 to -c3000 are realtime on a Gigabeat, -c1000 is realtime on Coldfire targets (H100, H300 and Cowon), and nothing is realtime on PortalPlayer targets (iPods, H10, Sansa). Hopefully this can be improved. More information at FS #7256.
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@13562 a1c6a512-1295-4272-9138-f99709370657
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2007-06-05 16:58:29 +00:00 |
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