[Audacity-devel] Feature request: Saving looping samples (.wav)

[Gee D. B. <gee...@ya...>]

Hi,

I'd like to see the ability to save loop points when
exporting wav files from my audacity projects.  I'm
not afraid to get my hands dirty in the code, but I
need to get my development machine back up and running
before I actually try to compile anything...

I've just downloaded the 1.3.0b source, and the source
of the latest libsndfile, and taken a sniff around. 
It looks like the latest version of libsndfile
supports the saving of smpl chunks when saving .wav
files.  An SF_INSTRUMENT definition would have to be
allocated and added to the SNDFILE structure via the
sf_command(), SFC_SET_INSTRUMENT.  The loop points and
loop mode would have to be set appropriately, and once
the call to save the file is made, it should all be
taken care of automatically by libsndfile.

As for the GUI, I suspect the easiest option would be
to add a "File>Export As Looped Wave File" menu item,
which would have some extra options on the save file
dialog.  One could specify the looping section to be
the current selection, a period starting at a given
label track and ending at the next label, or a period
defined by a start and end label.  Loop direction
could be specified as forward, backward or alternating
(ping pong).

Comments? Better ideas? Critiques? Just send a patch
when it's done? =)

sample gee dub bee music @ http://www.soundclick.com/bands/3/geedubbee.htm

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