faust93 / alsa-viperddc

VDC engine for ALSA

alsa-plugin-viperddc

Open-source VDC engine for ALSA

This is a standalone VDC engine for use with ALSA It does not require any extra dependencies

This plugin is a port of gst-plugin-viperddc

Build from sources

Clone repository

git clone https://github.com/faust93/alsa-viperddc

Dependencies required:

• ALSA Development headers and alsa-lib

Build the shared library

make

You should end up with libasound_module_pcm_ddc.so Now you need to copy the file into one of alsa lib directories, for ex. /usr/lib/alsa-lib

sudo cp libasound_module_pcm_ddc.so /usr/lib/alsa-lib/

or

sudo make install

Usage

VDC plugin operates in FLOAT32 sample format, so the audio data must be pumped through a plug to change the format to float under the hood:

pcm.<name_pcm_plug>{
    type plug;
    slave.pcm <name_pcm>;
}

Modify your local .asoundrc or /etc/asound.conf alsa configuration file, adding something like this:

pcm.viperddc {
    type ddc
#    slave.pcm "plug:dmixer"
    slave.pcm "plughw:0"
    ddc_file "/<some_folder_change_it>/V4ARISE.vdc"
}
pcm.ddc {
    type plug
    slave.pcm viperddc
}

You can try to produce some sound now by addressing the plugin by name, e.g.:

mpg123 -a ddc kalinka_malinka.mp3