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| -rw-r--r-- | docs/KNOWN_ISSUES | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/docs/KNOWN_ISSUES b/docs/KNOWN_ISSUES index db36ae5835..4ae88cb9fd 100644 --- a/docs/KNOWN_ISSUES +++ b/docs/KNOWN_ISSUES @@ -20,3 +20,23 @@ FS#4937 - A constant rhythmic ticking noise occurs in the right read at up-to 2.5hz and the clock at up-to 1hz). Nothing is going to change with it until someone spends a lot of time analyzing the portalplayer's I2C control registers, or finds a datasheet for the damned thing. + +FS#5796 - Early encoders such as this one employed a floor of type '0', as + opposed to the more efficient/cheaper floor type '1' which has been used in + all encoders from libvorbis 1.0 onwards, I believe. + + The problem appears to be that most DAP decoders can only handle a floor of + type '1'. + + While floor '0' type files like mine are, it turns out, pretty rare, they + still conform to the standards, as can be seen in the documention linked + below: + + http://www.xiph.org/vorbis/doc/Vorbis_I_spec.pdf + + which specifically states that "Floor 0 is not to be considered + deprecated..." + + Files like these require quite a bit of memory to decode, more than what + Rockbox has set aside for the purpose. Adding a real malloc for the codecs + might help... |