Re: [SoX-devel] Options from a Text File

[Chris B. <ch...@cn...>]

robs wrote:
> BTW, I do intend to get round to answering this at some point.  I just need to find some time to have a play with what you've done so far so I can put it in context...
>
> Cheers,
> Rob
>   
Since sox-commits isn't working, just letting you know I've submitted 
some more updates in this area over the weekend.  Also, below is some 
more information on some changes I think I'll make.

Its now possible to specify multiple effect command lines inside the 
--effects-file.  For instance:

sox --output multiple infile.wav output%n.mp3 --effects-file=splitpoints.txt

can be used to split up a file into three separate files if 
splitpoints.txt contains:

trim 0 30
trim 0 10
trim 0 40

Right now, the above will loop back to first effect line and continues 
creating more then 3 files until input reaches EOF.  Not sure if thats 
the long term behavior I want yet.

I'm thinking about getting ride of the --output option and force the 
user to specify it somehow in the effect chain.  This will allow 
applying one or more effects to the same output file and also for 
splitting.  For example:

trim 0 3:00
silence 0 1 0:01 %1
newfile
trim 0 2:30
silence 0 1 0:01 %1
newfile
stop

The above would allow using trim to be used to skip 3 minutes into the 
file and then use silence to detect end-of-track after 1 second of 
silence... Newfile is a queue point to start new output file.  Stop is a 
queue point to not loop to top if input hasn't reached EOF (just an idea 
right now... for that matter, we could support GOTO's and variables and 
conditional branches. :-) ).

Also, I'm thinking about adding support for this on the command line as 
well.  ";" would be same as new line in the effects file:

sox infile.wav outfile%n.mp3 trim 0 3:00 ";" silence 0 1 0:01 %1 "; " 
newfile; etc ";" etc

Chris