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Discussions (& strategies) on getting WMA and M4A (AAC) decoding in real-time.

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Davide-NYC:
He is my first attempt at profiling.
I do not in any way really know what I am doing or what these results mean other than the obvious.

I played the six test M4A files from: http://www.rockbox.org/twiki/bin/view/Main/CodecPerformanceComparison

nero_096.m4a
nero_128.m4a
nero_192.m4a
nero_256.m4a
nero_320.m4a
nero_400.m4a

Resultant text file attached:

[attachment deleted by admin, too old]

boylan:
Well, I'm not sure about everyone else, but my iTunes AAC files, DRM stripped by Hymn (before an ITunes upgrade awhile ago) now play perfectly on my H140!!!

As soon as a week ago, they were not playing.  Before it would skip as the processor couldn't keep up, and then a week ago it would choke on the metadata - but now it works perfectly!  I'm guessing the final straw was the metadata fix in the daily build of Oct 12th by Magnus.

This has been the feature I have waited forever for and I love it!  Now I can share files with my girlfriend who has an iPod.

Thanks to everyone for all the work so far - not just for this, but also in making Rockbox everything that it is.  My H140's original firmware was horrific, and with Rockbox - it's everything I could ask for.  Well done.

Davide-NYC:
Hey, if you have the time and the inclination maybe you could use your GFs iPod to run the test on the wiki page. We don;t have any iPod data.

BTW: the patch for debuc_menu.c is broken, don't bother with that. Just use a regular build.

JonathanHull:
Sorry for the horrible necro of this thread, but I figured I should update on my problem of my iTunes purchases with DRM stripped via QTFairUse not playing. Well, I upgraded Rockbox for the first time in months (probably when I last posted in this thread) and they all work now! :) :)

Thanks guys. Keep up the good work, it is appreciated greatly!

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