Bit manipulation?

ben_wizards

I'd like to do some bit manipulation of incoming audio, but I've realized that everything is converted to a float with values between -1 and 1. Is there a way to do get the raw data as it comes into the buffer and then convert it back?

giuliomoro

in PRU.cpp, before and after the call to render(), that is where audio and analog I/O are converted to float and back to int.
The native format of audio is int16_t, while analogs are uint16_t.

Editing of the core code through the IDE is not really supported, but there are ways of doing it.
For instance, you could create a symlink to the core folder in projects, from the console built into the IDE:

$ ln -s /root/Bela/core projects/core_code

at which point you will have a core_code project where the core files will show up and can be edited from the IDE.
IMPORTANT NOTE: it will not be possible to revert automatically to the original core files, so it is up to you to create a backup of them, either through the IDE file browser or from the console:

$ cp core/PRU.cpp core/PRU.cpp.bak # makes a backup
$ cp core/PRU.cpp.bak core/PRU.cpp # restores the backup

EDIT : amended the ln line

LiamDonovan

giuliomoro that won't actually work, you will get linker errors unless put the symlinks in sub folders.

I find the best way to edit the core code from the IDE is to create a new C++ project called core_code, then run the following commands from the IDE's console:

mkdir projects/core_code/core
mkdir projects/core_code/include
ln -s /root/Bela/core/* projects/core_code/core/
ln -s /root/Bela/include/* projects/core_code/include/

You won't get syntax checking, but your changes will be saved and compiled.