remove unused methods

decoder.go

@@ -253,30 +253,6 @@ func (d *Decoder) setPosition(seconds uint32) (newPos uint32, err error) {
 	return
 }
 
-func (d *Decoder) SetInfo(info *Info) error {
-	if info.format > 2 ||
-		info.bps < minBPS ||
-		info.bps > maxBPS ||
-		info.nch > maxNCH {
-		return errFormat
-	}
-	d.format = info.format
-	d.depth = (info.bps + 7) / 8
-	d.flenStd = (256 * (info.sps) / 245)
-	d.flenLast = info.samples % d.flenStd
-	d.frames = info.samples / d.flenStd
-	if d.flenLast != 0 {
-		d.frames++
-	} else {
-		d.flenLast = d.flenStd
-	}
-	d.rate = 0
-	d.channels = int(info.nch)
-	d.fifo.readStart()
-	d.frameInit(0, false)
-	return nil
-}
-
 func (d *Decoder) ReadHeader(info *Info) (uint32, error) {
 	size := d.fifo.skipId3v2()
 	d.fifo.reset()

encoder.go

@@ -57,7 +57,7 @@ func Compress(infile io.ReadSeeker, outfile io.ReadWriteSeeker, passwd string, c
 	}
 	bufSize := pcmBufferLength * smpSize
 	buffer := make([]byte, bufSize)
-	if err = encoder.SetInfo(&info, 0); err != nil {
+	if err = encoder.SetInfo(&info); err != nil {
 		return
 	}
 	var readLen int
@@ -202,7 +202,7 @@ func (e *Encoder) writeSeekTable() (err error) {
 	if _, err = e.fifo.io.Seek(int64(e.offset), os.SEEK_SET); err != nil {
 		return
 	}
-	e.fifo.writeStart()
+	e.fifo.pos = 0
 	e.fifo.reset()
 	for i := uint32(0); i < e.frames; i++ {
 		e.fifo.writeUint32(uint32(e.seekTable[i] & 0xFFFFFFFF))
@@ -282,26 +282,18 @@ func (e *Encoder) WriteHeader(info *Info) (size uint32, err error) {
 
 }
 
-func (e *Encoder) SetInfo(info *Info, pos int64) (err error) {
+func (e *Encoder) SetInfo(info *Info) (err error) {
 	if info.format > 2 ||
 		info.bps < minBPS ||
 		info.bps > maxBPS ||
 		info.nch > maxNCH {
 		return errFormat
 	}
-	// set start position if required
-	if pos != 0 {
-		if _, err = e.fifo.io.Seek(int64(pos), os.SEEK_SET); err != nil {
-			err = errSeek
-			return
-		}
-	}
-	e.fifo.writeStart()
 	var p uint32
 	if p, err = e.WriteHeader(info); err != nil {
 		return
 	}
-	e.offset = uint64(pos) + uint64(p)
+	e.offset = uint64(p)
 	e.format = info.format
 	e.depth = (info.bps + 7) / 8
 	e.flenStd = (256 * (info.sps) / 245)

fifo.go

@@ -150,10 +150,6 @@ func (s *fifo) getValue(ad *adapter) (value int32) {
 	return
 }
 
-func (s *fifo) writeStart() {
-	s.pos = 0
-}
-
 func (s *fifo) writeDone() error {
 	if s.pos > 0 {
 		if n, err := s.io.Write(s.buffer[:s.pos]); err != nil || n != int(s.pos) {