VisualAp

VisualAp is a visual framework for building application and systems based on visual components.

Overview

VisualAp can be used in order to perform audio processing, image processing, text and other process-driven emulation. VisualAp provides a visual framework based on lightweight components, called proclet. The user can create an application by selecting the components from a toolbox, configuring the parameters (via the Javabeans framework), and connecting the components together in order to set-up communication channels between the components. Please click here and read the user guide for more information.

This application has been tested wit Java 11 and Java 25.

Build

The project is built using command ant. The build process creates file visualap-setup.jar that is the installer of VisualAp application.

Install

Create a folder where to copy the visualap-setup.jar and run it to install VisualAp:

java -jar visualap-setup.jar

After installation file visualap-setup.jar can be deleted.

Run

Launch VisualAp with command:

java -jar visualap.jar

User Interface

Here is a screenshot of the user interface:

The user interface is described in more details here.

Short tutorial

• Launch the application VisualAp, or select File->New if it is already running
• Select in the toolbox the “ReadFile” component, move and click the mouse pointer in the left side of the workspace: the component ReadFile is placed in the left side of the workplace
• Double-click the ReadFile component in the workspace: the properties window for ReadFile appears.
• In the properties window press the “Choose Filter” button, select the file “sassi.jpg” and press “Done”.
• Now select in the toolbox the ”ImageFilter” component, move and click the mouse pointer in the center of the workspace: the component ImageFilter is placed in the workplace.
• Connect the output pin of ReadFile to the input pin of the ImageFilter component.
• Now select in the toolbox the ”Viewer” component, move and click the mouse pointer in the right side of the workspace: the component Viewer is placed in the workplace.
• Connect the output pin of ImageFilter to the input pin of the Viewer component.
• Now check the system: System->Check, you should get a dialog with “System Check Passed” answer.
• Eventually you can run the system: System->Run, a new window pops-up with the inverted image.
• Double-click the ImageFilter component in the workspace: the properties window for ImageFilter appears. You can change the effect to 5x5Edge.
• Run the system, again System->Run, the image will change due to the new filter.

Additional information are available in the developer guide.

Processing components

• Echo: apply echo effect to audio stream
• Delay: apply delay to audio stream
• DeMux: split stereo audio in two mono audio
• Imagefilter: performs basic filtering of image
• Imagetransform: performs basic transforms of image
• Inspect: shows the type of the incoming data
• Microfone: records an audio stream
• Mux: generate stereo audio from two mono audio inputs
• ReadFile: read a file, contains a property "file" -> a custom editor is used for file property
• Speaker: plays an audio stream
• ToneGenerator: generate a simple audio tone, contains properties that are checked against max values, contains a property "type" -> a custom editor is used to select a specific value
• Viewer: shows the incoming data in a floating window
• WriteFile: write a file, supported type: text, audio, image