Write a helper function

utils/helpers.go

@@ -0,0 +1,47 @@
+package utils
+
+import (
+	"encoding/binary"
+	"fmt"
+)
+
+func FloatsToBytes(data []float64, bitsPerSample int) ([]byte, error) {
+	var byteData []byte
+
+	switch bitsPerSample {
+	case 8:
+		for _, sample := range data {
+			// Convert float to 8-bit unsigned integer
+			val := uint8((sample + 1.0) * 127.5)
+			byteData = append(byteData, byte(val))
+		}
+	case 16:
+		for _, sample := range data {
+			// Convert float to 16-bit signed integer
+			val := int16(sample * 32767.0)
+			buf := make([]byte, 2)
+			binary.LittleEndian.PutUint16(buf, uint16(val))
+			byteData = append(byteData, buf...)
+		}
+	case 24:
+		for _, sample := range data {
+			// Convert float to 24-bit signed integer
+			val := int32(sample * 8388607.0)
+			buf := make([]byte, 4)
+			binary.LittleEndian.PutUint32(buf, uint32(val)<<8) // Shift by 8 bits to fit 24-bit
+			byteData = append(byteData, buf[:3]...)
+		}
+	case 32:
+		for _, sample := range data {
+			// Convert float to 32-bit signed integer
+			val := int32(sample * 2147483647.0)
+			buf := make([]byte, 4)
+			binary.LittleEndian.PutUint32(buf, uint32(val))
+			byteData = append(byteData, buf...)
+		}
+	default:
+		return nil, fmt.Errorf("unsupported bitsPerSample: %d", bitsPerSample)
+	}
+
+	return byteData, nil
+}