I have added multiple instances support to sox.
Can someone explain how to add the output of one instance as part of
another ?
I have the output samples generated by each instance on each run in
[sox->main()->process()->sox_flow_effects()->while() loop],
I need to know, how this output sample that I have can be fed to another
instance.
Thanks a lot in advance for any support.
Aatral
On Sun, Oct 7, 2012 at 12:45 AM, Aatral Arasu <aatr...@gmail.com> wrote:
> Hi,
>
> I'm working with Android NDK, porting Sox to be used from Java calling the
> main method run() via NDK and providing progress updates to the java
> program.
>
> sox command line example:
> play -m "|sox -v 0.8 base.mp3 -p speed 1.5" "|sox -v 4 voice.wav -p pitch
> -500 tempo 1.5"
>
> The above example, runs three instances of sox where the output of one is
> fed as input to another.
>
> I need the same functionality in Android NDK:
>
> My idea is to run the same in the following sequence in a single process
> or by calling a single method :
>
> "sox -v 0.8 base.mp3 -p speed 1.5" -- output to pipe1 buffer
> "sox -v 4 voice.wav -p pitch -500 tempo 1.5" -- output to pipe2 buffer
> "play -m --pipe1(input from pipe1 buffer) --pipe2 (input from pipe2
> buffer)"
>
> I'm going through the sox.c file, where run() calls parse methods and
> process() method for parsing and processing the inputs and generating the
> outputs.
>
> It would be grateful, If someone can explain or provide code pointers, how
> better to incorporate multiple instances and pipe logic, as explained above
> inside Sox itself, without relying on linux pipe and multiple processes.
>
> Thanks a lot in advance,
> Aatral
>
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