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Subject: Recording bug in Rockbox 2.5

Recording bug in Rockbox 2.5

From: Bluechip <csbluechip_at_gmail.com>
Date: 2005-11-18

Just got the feedback required.

The recordings are made with Rockbox v2.5 on an Archos Jukebox via the
digital-in (from a radio)

There is a 4K id3v2 tag; then 240 0x00's; then a dummy Xing header
containing the text "Rockbox - rocks your box" ...it is this Xing frame
which is the problem.

There are precisely 576 bytes available between the end of the id3v2 tag
and the first audio frame. The Audio frame containing the Xing header
claims to be 576 bytes (the full size available) ...but because the Xing
header has been written 240 bytes late, this means that the index for the
first audio frame is wrong

Most players should correct this quite happily - I guess by cutting 26mS of
audio off the start - which would almost never be noticed. But because the
util I am writing is doing this bit shift to try and correct hardware
errors, it is all going horribly wrong.

I will work around it here - I have to; this util has to be able to handle
bad Rockbox files - but I thought you might like to fix the problem. So if
you need any more info, just ask.

BC
Received on Fri Nov 18 02:32:49 2005


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