49 lines
1023 B
Go
49 lines
1023 B
Go
package common
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import (
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"errors"
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"fmt"
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"io"
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)
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type RawDecoder struct {
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rd io.ReadSeeker
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audioExt string
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}
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func NewRawDecoder(rd io.ReadSeeker) Decoder {
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return &RawDecoder{rd: rd}
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}
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func (d *RawDecoder) Validate() error {
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header := make([]byte, 16)
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if _, err := io.ReadFull(d.rd, header); err != nil {
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return fmt.Errorf("read file header failed: %v", err)
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}
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if _, err := d.rd.Seek(0, io.SeekStart); err != nil {
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return fmt.Errorf("seek file failed: %v", err)
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}
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var ok bool
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d.audioExt, ok = SniffAll(header)
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if !ok {
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return errors.New("raw: sniff audio type failed")
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}
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return nil
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}
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func (d *RawDecoder) Read(p []byte) (n int, err error) {
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return d.rd.Read(p)
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}
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func init() {
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RegisterDecoder("mp3", true, NewRawDecoder)
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RegisterDecoder("flac", true, NewRawDecoder)
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RegisterDecoder("ogg", true, NewRawDecoder)
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RegisterDecoder("m4a", true, NewRawDecoder)
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RegisterDecoder("wav", true, NewRawDecoder)
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RegisterDecoder("wma", true, NewRawDecoder)
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RegisterDecoder("aac", true, NewRawDecoder)
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}
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