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Nier Visualizer is a lightweight and efficient Android visual library written in pure Kotlin.It has an independent rendering thread, compatible with most of the equipment on the market. Nier Visualizer is ideal for audio visualization applications such as music players, recorder, live wallpaper and more.

Nier Visualizer has six kinds of independent visual effects currently. More effects are under development, welcome to star operation to see in time.

2. Effect display (constantly updated)

ColumnarType1Renderer	ColumnarType2Renderer	ColumnarType3Renderer
LineRenderer	CircleBarRenderer	CircleRenderer
		Star to see more
Compound effect 1	Compound effect2	Developing...

3. How to

3.1 Dependencies

1. Add it in your root build.gradle at the end of repositories:

allprojects {
		repositories {
			...
			maven { url 'https://jitpack.io' }
		}
	}

1. Add the dependency

dependencies {
		compile 'com.github.bogerchan:Nier-Visualizer:v0.0.1'
	}

3.2 Sample project

Nier Visualizer project provides a demo module for reference.

3.3 Use Kotlin

3.3.1 Framework initialization

val visualizerManager = NierVisualizerManager()

// need a param of audioSession, 0 is output mix
visualizerManager.init(0)

3.3.2 Framework release

visualizerManager.release()

3.3.3 Start rendering

visualizerManager.start(surfaceView, arrayOf(ColumnarType1Renderer()))

3.3.4 Stop rendering

visualizerManager.stop()

3.4 Use Java

3.4.1 Framework initialization

NierVisualizerManager visualizerManager = new NierVisualizerManager();

// need a param of audioSession, 0 is output mix
visualizerManager.init(0);

3.4.2 Framework release

visualizerManager.release();

3.4.3 Start rendering

visualizerManager.start(surfaceView, new IRenderer[]{new LineRenderer(true)});

3.4.4 Stop rendering

visualizerManager.stop();

4. Follow-up plan

• Thinking about implementing visual effects like Siri.
• Some gallery of visual effects tailored for DJ music.
• If you are interested in it, welcome to Fork to do it together!

5. Thanks

Ported some of the android-visualizer� visual effects, thanks to felixpalmer!

6. Protocol

Copyright 2017 Boger Chan

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

   http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.