SCWaveformView
A blazing fast customizable waveform view. Extract the audio section of an asset (which can be both video or audio) and display a waveform. Compared to other libs that are found on the web, this one does not do much memory allocations. Only one pass is also done to create the waveform.
Main features:
- Can show a play progress
- Colors are changeable at runtime without reprocessing the asset
- Generated waveforms are retrievable
- Set the asset, then you are good to go
- ARC
This project is inspired from https://github.com/fulldecent/FDWaveformView
Example
// Allocating the waveformview
SCWaveformView *waveformView = [[SCWaveformView alloc] init];
// Setting the asset
AVAsset *asset = [AVURLAsset URLAssetWithURL:[NSURL URLWithString:@"blabla.mp3"]];
waveformView.asset = asset;
// Setting the waveform colors
waveformView.normalColor = [UIColor greenColor];
waveformView.progressColor = [UIColor redColor];
// Set the play progress
waveformView.progress = 0.4;
// Even though the waveformview will eventually reprocess the waveforms when needed
// You can ask it to generate the waveforms right now
[waveformView generateWaveforms];
// Retrieve the waveforms. for whatever reasons
UIImage *progressWaveformImage = waveformView.generatedProgressImage;
UIImage *normalWaveformImage = waveformView.generatedNormalImage;