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audu-utils

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audu-utils - npm Package Compare versions

Comparing version
0.0.1
 to
0.0.2
+16
-64
index.js
// AudioConverter.js
class BufferPool {
constructor() {
this.buffers = new Map();
this.maxSize = 1024 * 1024; // 1MB
this.currentSize = 0;
}
getOrCreate(channels, length, sampleRate) {
const key = `${channels}-${length}-${sampleRate}`;
if (this.buffers.has(key)) {
const buffer = this.buffers.get(key);
this.buffers.delete(key);
this.currentSize -= buffer.length * channels * 2;
this.buffers.set(key, buffer);
this.currentSize += buffer.length * channels * 2;
return buffer;
}
const buffer = new this.audioContext.createBuffer(
channels,
length,
sampleRate
);
if (this.currentSize + length * channels * 2 > this.maxSize) {
this.cleanup();
}
this.buffers.set(key, buffer);
this.currentSize += buffer.length * channels * 2;
return buffer;
}
cleanup() {
const keys = Array.from(this.buffers.keys());
while (this.currentSize > this.maxSize / 2 && keys.length > 0) {
const key = keys.pop();
const buffer = this.buffers.get(key);
this.currentSize -= buffer.length * buffer.numberOfChannels * 2;
this.buffers.delete(key);
}
}
}
class AudioConverter {
constructor() {
this.audioContext = new (window.AudioContext ||
window.webkitAudioContext)();
this.audioContext = new (window.AudioContext || window.webkitAudioContext)();
this.bufferPool = new BufferPool();

@@ -58,5 +12,5 @@ }

const audioBuffer = await this.audioContext.decodeAudioData(arrayBuffer);
const auduData = {
format: "audu",
format: 'audu',
version: 1,

@@ -66,9 +20,9 @@ sampleRate: this.audioContext.sampleRate,

length: audioBuffer.length,
data: this.bufferToDataUrl(audioBuffer),
data: this.bufferToDataUrl(audioBuffer)
};
return auduData;
} catch (error) {
throw new AudioConverterError(401, "変換エラーが発生しました", {
originalError: error,
throw new AudioConverterError(401, '変換エラーが発生しました', {
originalError: error
});

@@ -97,16 +51,14 @@ }

try {
const blob = new Blob([JSON.stringify(auduData)], {
type: "application/audu",
});
const blob = new Blob([JSON.stringify(auduData)], { type: 'application/audu' });
const url = URL.createObjectURL(blob);
const a = document.createElement("a");
const a = document.createElement('a');
a.href = url;
a.download = "output.audu";
a.download = 'output.audu';
a.click();
return blob;
} catch (error) {
throw new AudioConverterError(401, "保存エラーが発生しました", {
originalError: error,
throw new AudioConverterError(401, '保存エラーが発生しました', {
originalError: error
});

@@ -122,6 +74,6 @@ }

this.details = details;
this.name = "AudioConverterError";
this.name = 'AudioConverterError';
}
}
export const AudioConverter = new AudioConverter();
export { AudioConverter };
+1
-1
package.json
{
"name": "audu-utils",
"version": "0.0.1",
"version": "0.0.2",
"description": "AUDU format utility to combine AudioBuffer generated from multiple audio into one file",

@@ -5,0 +5,0 @@ "keywords": [