Dplug is an audio plugin framework.
Its core value proposition is abstracting over:
- the various plugin formats. Dplug implements 7 plugin "clients" and 1 plugin "host".
- the various OS windowing
so that developers can focus on a portable codebase for audio software.
dplug:vst2, dplug:vst3, dplug:au, dplug:lv2, dplug:flp, and dplug-aax are "plugin clients" libraries.
These subpackage depends on the "generic client" dplug:client.
dplug:window implements windowing for the various OS. It implements IWindow.
Each window is given a IWindowListener.
dplug:client defines IGraphics which is implemented by dplug:gui.
dplug:gui is at the interface between dplug:window and dplug:client.
dplug:gui also define a widget system, whose base class is UIElement.
In Dplug, that UI system is Physically Based Rendered through the use of two layers: the "Raw" and "PBR layer". The PBR layer is slow to update but support more complex rendering. The Raw layer is quick to update and is always on top.
The god object orchestrating all this is GUIGraphics.
Within each layer, widgets are Z-ordered for drawing and events.
dplug:pbr-widget and dplug:flatwidgets are different collections of widgets that act on these layers. They can act as base classes, or examples, for custom widgets.
dplug:wren-support is an optional enhancement that adds the ability to script parts of the UI.
dplug:math defines small vectors, rectangles, and matrices.
dplug:graphics defines drawing surfaces and a lot of low-level rendering routines. They are considered a legacy way to draw on screen. This is based on a fork of ae:graphics, a stripped-down generic library for working with images.
dplug:canvas is a 2D rasterizer library that provide quick RGBA drawing with a friendly interface. It is now the preferred way to draw on screen.
More info on this in the Wiki.
dplug:dsp is the legacy, rather bad DSP module.
dplug:audio defines an AudioBuffer abstraction and is the base for better DSP modules, such as dsp:iir. But those two subpackages are very early.