audio-components

Audio Components for the REDHAWK framework.

GStreamer

Many of these components use the GStreamer framework. On Ubuntu, the minimally necessary packages can be installed using the command:

sudo apt-get install libgstreamer0.10-dev \
                     gstreamer0.10-plugins-base \
                     gstreamer0.10-plugins-good

AudioTestSource

Provides the GStreamer audiotestsrc plugin as a REDHAWK component. Allows for the generation of various waveforms: sine, square, saw, triangle, silence, white noise, pink noise, ticks, gaussian white noise, red noise, blue noise, and violet noise.

Produces 16-bit linear mono samples via a BULKIO dataShort port.

AudioSource

Uses the GStreamer playbin to read pretty much any audio source that your system can support (i.e. CD, DVD, mp3, ogg, speex) including extracting audio from video sources.

The audio-uri property defines the source of the audio. For example:

• file:///path/to/somefile.mp3 read from a file
• cdda://4 plays track 4 from the CD

AudioSink

Renders 16-bit linear mono samples via a BULKIO dataShort port to the sound card.

Provides 3-band equalizer and volume control via properties.