64 lines
993 B
Go
64 lines
993 B
Go
package main
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import (
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"bytes"
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"encoding/binary"
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"errors"
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"io"
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"os"
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"github.com/pion/opus"
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"github.com/pion/opus/pkg/oggreader"
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)
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func convertFloatToByteSlice(i []float32) []byte {
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buf := new(bytes.Buffer)
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binary.Write(buf, binary.LittleEndian, i)
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return buf.Bytes()
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}
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func main() {
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if len(os.Args) != 3 {
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panic("Usage: <in-file> <out-file>")
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}
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file, err := os.Open(os.Args[1])
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if err != nil {
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panic(err)
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}
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ogg, _, err := oggreader.NewWith(file)
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if err != nil {
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panic(err)
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}
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out := make([]float32, 320)
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f, err := os.Create(os.Args[2])
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if err != nil {
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panic(err)
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}
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decoder := opus.NewDecoder()
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for {
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segments, _, err := ogg.ParseNextPage()
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if errors.Is(err, io.EOF) {
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break
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} else if bytes.HasPrefix(segments[0], []byte("OpusTags")) {
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continue
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}
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if err != nil {
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panic(err)
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}
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for i := range segments {
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if _, _, err = decoder.Decode(segments[i], out); err != nil {
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panic(err)
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}
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f.Write(floatarrtobytes(out))
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}
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}
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}
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