From d68b1728044b9722e9d211e7d4680b07a45e27cb Mon Sep 17 00:00:00 2001
From: Maciej Makowski <maciej.makowski@swmansion.com>
Date: Wed, 18 Dec 2024 10:12:40 +0100
Subject: [PATCH] feat: added ts interface for AnalyserNode

---
 .../src/core/AnalyserNode.ts                  | 37 +++++++++++++++++++
 .../src/index.native.ts                       |  1 +
 packages/react-native-audio-api/src/index.ts  | 34 +++++++++++++++++
 .../react-native-audio-api/src/interfaces.ts  | 13 +++++++
 4 files changed, 85 insertions(+)
 create mode 100644 packages/react-native-audio-api/src/core/AnalyserNode.ts

diff --git a/packages/react-native-audio-api/src/core/AnalyserNode.ts b/packages/react-native-audio-api/src/core/AnalyserNode.ts
new file mode 100644
index 00000000..4f585d69
--- /dev/null
+++ b/packages/react-native-audio-api/src/core/AnalyserNode.ts
@@ -0,0 +1,37 @@
+import { IAnalyserNode } from '../interfaces';
+import AudioNode from './AudioNode';
+import BaseAudioContext from './BaseAudioContext';
+
+export default class AnalyserNode extends AudioNode {
+  fftSize: number;
+  readonly frequencyBinCount: number;
+  minDecibels: number;
+  maxDecibels: number;
+  smoothingTimeConstant: number;
+
+  constructor(context: BaseAudioContext, analyser: IAnalyserNode) {
+    super(context, analyser);
+
+    this.fftSize = analyser.fftSize;
+    this.frequencyBinCount = analyser.frequencyBinCount;
+    this.minDecibels = analyser.minDecibels;
+    this.maxDecibels = analyser.maxDecibels;
+    this.smoothingTimeConstant = analyser.smoothingTimeConstant;
+  }
+
+  getFloatFrequencyData(array: number[]): void {
+    (this.node as IAnalyserNode).getFloatFrequencyData(array);
+  }
+
+  getByteFrequencyData(array: number[]): void {
+    (this.node as IAnalyserNode).getByteFrequencyData(array);
+  }
+
+  getFloatTimeDomainData(array: number[]): void {
+    (this.node as IAnalyserNode).getFloatTimeDomainData(array);
+  }
+
+  getByteTimeDomainData(array: number[]): void {
+    (this.node as IAnalyserNode).getByteTimeDomainData(array);
+  }
+}
diff --git a/packages/react-native-audio-api/src/index.native.ts b/packages/react-native-audio-api/src/index.native.ts
index e276dfde..ac281138 100644
--- a/packages/react-native-audio-api/src/index.native.ts
+++ b/packages/react-native-audio-api/src/index.native.ts
@@ -9,6 +9,7 @@ export { default as AudioBufferSourceNode } from './core/AudioBufferSourceNode';
 export { default as AudioContext } from './core/AudioContext';
 export { default as AudioDestinationNode } from './core/AudioDestinationNode';
 export { default as AudioNode } from './core/AudioNode';
+export { default as AnalyserNode } from './core/AnalyserNode';
 export { default as AudioParam } from './core/AudioParam';
 export { default as AudioScheduledSourceNode } from './core/AudioScheduledSourceNode';
 export { default as BaseAudioContext } from './core/BaseAudioContext';
diff --git a/packages/react-native-audio-api/src/index.ts b/packages/react-native-audio-api/src/index.ts
index f9dfe049..1531f7a8 100644
--- a/packages/react-native-audio-api/src/index.ts
+++ b/packages/react-native-audio-api/src/index.ts
@@ -110,6 +110,40 @@ export class AudioNode {
   }
 }
 
+export class AnalyserNode extends AudioNode {
+  readonly fftSize: number;
+  readonly frequencyBinCount: number;
+  readonly minDecibels: number;
+  readonly maxDecibels: number;
+  readonly smoothingTimeConstant: number;
+
+  constructor(context: AudioContext, node: globalThis.AnalyserNode) {
+    super(context, node);
+
+    this.fftSize = node.fftSize;
+    this.frequencyBinCount = node.frequencyBinCount;
+    this.minDecibels = node.minDecibels;
+    this.maxDecibels = node.maxDecibels;
+    this.smoothingTimeConstant = node.smoothingTimeConstant;
+  }
+
+  public getByteFrequencyData(array: Uint8Array): void {
+    (this.node as globalThis.AnalyserNode).getByteFrequencyData(array);
+  }
+
+  public getByteTimeDomainData(array: Uint8Array): void {
+    (this.node as globalThis.AnalyserNode).getByteTimeDomainData(array);
+  }
+
+  public getFloatFrequencyData(array: Float32Array): void {
+    (this.node as globalThis.AnalyserNode).getFloatFrequencyData(array);
+  }
+
+  public getFloatTimeDomainData(array: Float32Array): void {
+    (this.node as globalThis.AnalyserNode).getFloatTimeDomainData(array);
+  }
+}
+
 export class AudioScheduledSourceNode extends AudioNode {
   private hasBeenStarted: boolean = false;
 
diff --git a/packages/react-native-audio-api/src/interfaces.ts b/packages/react-native-audio-api/src/interfaces.ts
index 58a7637c..c6b09e0c 100644
--- a/packages/react-native-audio-api/src/interfaces.ts
+++ b/packages/react-native-audio-api/src/interfaces.ts
@@ -136,3 +136,16 @@ export interface IAudioParam {
 }
 
 export interface IPeriodicWave {}
+
+export interface IAnalyserNode extends IAudioNode {
+  fftSize: number;
+  readonly frequencyBinCount: number;
+  minDecibels: number;
+  maxDecibels: number;
+  smoothingTimeConstant: number;
+
+  getFloatFrequencyData: (array: number[]) => void;
+  getByteFrequencyData: (array: number[]) => void;
+  getFloatTimeDomainData: (array: number[]) => void;
+  getByteTimeDomainData: (array: number[]) => void;
+}