node_vst_host_plugin_load_and_audio_buffer_processing.ts

1import * as vst from 'node-vst-host';
2
3// Path to your VST plugin (.dll on Windows, .vst or .component on macOS)
4const PLUGIN_PATH = './path/to/your/plugin.dll';
5
6async function runQuickstart() {
7    try {
8        // 1. Load the plugin
9        const plugin = vst.createNext(PLUGIN_PATH);
10
11        // 2. Open the plugin (initializes the VST)
12        plugin.open();
13
14        // 3. Set basic audio parameters
15        const sampleRate = 44100;
16        const blockSize = 512;
17        plugin.setSampleRate(sampleRate);
18        plugin.setBlockSize(blockSize);
19
20        // 4. Resume/Turn on the plugin
21        plugin.resume();
22
23        // 5. Create audio buffers (Float32Array)
24        // For a stereo plugin, we need 2 input and 2 output channels
25        const inputL = new Float32Array(blockSize).fill(0);
26        const inputR = new Float32Array(blockSize).fill(0);
27        const outputL = new Float32Array(blockSize);
28        const outputR = new Float32Array(blockSize);
29
30        // 6. Process audio
31        // In a real app, this would be inside your audio loop
32        plugin.process([inputL, inputR], [outputL, outputR]);
33
34        console.log('Successfully processed one block of audio.');
35
36        // 7. Cleanup
37        plugin.suspend();
38        plugin.close();
39    } catch (error) {
40        console.error('Error loading or processing VST:', error);
41    }
42}
43
44runQuickstart();