Support and General Use > Audio Playback, Database and Playlists

Crossfade broken?

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saratoga:
By the way, do you know why people have reported slower database building on hard disk players since the file system rework? As I recall the new system was faster in most tests, so it's surprising that the database did not benefit.

jhMikeS:
Which players? I do have hard disk players and didn't see anything horrible in the times. Perhaps the TC ramcache stuff is behind it since it got disabled for the moment (it would have just made the changes even more massive and was no longer compatible with the revised version). I got sidetracked by events and didn't finish what I intended to.

chrisjj:

--- Quote from: saratoga on January 05, 2017, 04:10:16 PM ---By the way, do you know why people have reported slower database building on hard disk players since the file system rework? As I recall the new system was faster in most tests, so it's surprising that the database did not benefit.

--- End quote ---

I don't know the RB db code but my experience of other audio metadata DB builders tells me there's opening of many large files and reading of relatively few bytes from each - a usage pattern unique to DB building that could be slowed from an update that would accelerate performance overall, and not be covered by tests that covered other filing system usages.

chrisjj:

--- Quote from: chrisjj on January 05, 2017, 10:53:48 AM ---Fix seen here https://git.rockbox.org/?p=rockbox.git;a=commitdiff;h=6c837394ca6d7a988bfbdc9e97630e69f0bc2025 .

Thanks. Looking forward to trying it!

--- End quote ---

The track loss fix is verified here. Thanks!

But crossfade shape is bust. Fade-out delay missing and duration diminished:



Again that's a 10s track.

On a 20s track with skip near start, the shape is correct:



But near end, exhibits the same fail:



This fail strikes every track I've tried regardless on length, when the fade is e.g. 8s from the end.

FWIW, Auto Track Change (on both lengths) is correct .

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