60 lines
1.1 KiB
Go
60 lines
1.1 KiB
Go
//go:build !disable_format_vorbis && (disable_codec_libvorbis || !cgo)
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package vorbis
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import (
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"bytes"
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"git.gammaspectra.live/S.O.N.G/Kirika/audio"
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"git.gammaspectra.live/S.O.N.G/Kirika/audio/format"
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libvorbis "github.com/jfreymuth/oggvorbis"
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"io"
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)
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type Format struct {
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}
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func NewFormat() Format {
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return Format{}
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}
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func (f Format) Name() string {
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return "vorbis"
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}
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func (f Format) DecoderDescription() string {
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return "jfreymuth/oggvorvis"
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}
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func (f Format) Open(r io.ReadSeekCloser) (audio.Source, error) {
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reader, err := libvorbis.NewReader(r)
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if err != nil {
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return nil, err
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}
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source := audio.NewSource[float32](16, reader.SampleRate(), reader.Channels())
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go func() {
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defer source.Close()
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for {
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buffer := make([]float32, 8192)
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n, err := reader.Read(buffer)
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if err != nil {
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return
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}
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if n > 0 {
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source.IngestFloat32(buffer[:n])
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}
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}
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}()
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return source, nil
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}
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func (f Format) Identify(peek [format.IdentifyPeekBytes]byte, extension string) bool {
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return bytes.Compare(peek[:4], []byte{'O', 'g', 'g', 'S'}) == 0 || extension == "vorbis" || extension == "ogg"
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}
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