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whisper.cpp/examples/whisper.swiftui/whisper.swiftui.demo/Utils/RiffWaveUtils.swift

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394 B

import Foundation
func decodeWaveFile(_ url: URL) throws -> [Float] {
let data = try Data(contentsOf: url)
let floats = stride(from: 44, to: data.count, by: 2).map {
return data[$0..<$0 + 2].withUnsafeBytes {
let short = Int16(littleEndian: $0.load(as: Int16.self))
return max(-1.0, min(Float(short) / 32767.0, 1.0))
}
}
return floats
}