[vorbis-dev] decoder with special features needed: pointers, ideas?
Hartmut.Niemann at gmx.de
Mon Nov 10 23:01:06 PST 2003
I want to use a ogg-equipped notebook for playing music for (folk and
and a player for this should have two features I' like to find or implement:
(1) I want the middle part of a song repeat "endlessly", with two track marks
that I want to hide somewhere in a vorbis comment.
(One day I want to control that with a gui or SIGUSR1 or something else, but
for now it would help if I can play an ogg file from start to e.g. 2:00 and
then jump back to 0:16 and play to the end.)
(2) I would like to manipulate speed and pitch, and even better, if I could
do that independently.
Do you know a decoder/player that can do one or both?
Do you know a good starting point to do it myself?
I startet with ogg123 and (for the loop) ovf_seek as well as
format->cleanup/init/seek, but the results were .. unsatisfactory.
Ogg123 seems to be ready for different formats, but only ogg is supported. Is
Is there a place in the decoding chain, where the information is in a
frequency domain, and where one could more or less easily change pitch by
shuffling FFT (or alike) coefficients around?
Thank you for your help!
With best regards
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