mirror of
https://github.com/cgzirim/seek-tune.git
synced 2025-12-17 17:04:22 +00:00
47 lines
1.2 KiB
Go
47 lines
1.2 KiB
Go
package utils
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import (
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"encoding/binary"
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"fmt"
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)
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func FloatsToBytes(data []float64, bitsPerSample int) ([]byte, error) {
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var byteData []byte
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switch bitsPerSample {
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case 8:
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for _, sample := range data {
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// Convert float to 8-bit unsigned integer
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val := uint8((sample + 1.0) * 127.5)
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byteData = append(byteData, byte(val))
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}
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case 16:
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for _, sample := range data {
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// Convert float to 16-bit signed integer
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val := int16(sample * 32767.0)
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buf := make([]byte, 2)
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binary.LittleEndian.PutUint16(buf, uint16(val))
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byteData = append(byteData, buf...)
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}
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case 24:
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for _, sample := range data {
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// Convert float to 24-bit signed integer
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val := int32(sample * 8388607.0)
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buf := make([]byte, 4)
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binary.LittleEndian.PutUint32(buf, uint32(val)<<8) // Shift by 8 bits to fit 24-bit
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byteData = append(byteData, buf[:3]...)
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}
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case 32:
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for _, sample := range data {
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// Convert float to 32-bit signed integer
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val := int32(sample * 2147483647.0)
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buf := make([]byte, 4)
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binary.LittleEndian.PutUint32(buf, uint32(val))
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byteData = append(byteData, buf...)
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}
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default:
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return nil, fmt.Errorf("unsupported bitsPerSample: %d", bitsPerSample)
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}
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return byteData, nil
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}
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