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Revert "audio/wav: Allow passing non-io.Seeker to Decode"

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This reverts commit 19cd69da55.

Reason: Marked #1202 'won't fix'
This commit is contained in:
Hajime Hoshi 2020-08-23 19:46:28 +09:00
parent 19cd69da55
commit 50fc914d72
1 changed files with 3 additions and 10 deletions
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13
audio/wav/decode.go
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@ -39,8 +39,6 @@ func (s *Stream) Read(p []byte) (int, error) {
// Seek is implementation of io.Seeker's Seek.
//
// Note that Seek can take long since decoding is a relatively heavy task.
//
// If the underlying source is not io.Seeker, Seek panics.
func (s *Stream) Seek(offset int64, whence int) (int64, error) {
return s.inner.Seek(offset, whence)
}
@ -64,7 +62,7 @@ func (s *Stream) Size() int64 {
}
type stream struct {
src io.ReadCloser
src audio.ReadSeekCloser
headerSize int64
dataSize int64
remaining int64
@ -85,11 +83,6 @@ func (s *stream) Read(p []byte) (int, error) {
// Seek is implementation of io.Seeker's Seek.
func (s *stream) Seek(offset int64, whence int) (int64, error) {
seeker, ok := s.src.(io.Seeker)
if !ok {
panic("wav: the underlying source is not io.Seeker")
}
switch whence {
case io.SeekStart:
offset = offset + s.headerSize
@ -98,7 +91,7 @@ func (s *stream) Seek(offset int64, whence int) (int64, error) {
offset = s.headerSize + s.dataSize + offset
whence = io.SeekStart
}
n, err := seeker.Seek(offset, whence)
n, err := s.src.Seek(offset, whence)
if err != nil {
return 0, err
}
@ -135,7 +128,7 @@ func (s *stream) Length() int64 {
// Decode automatically resamples the stream to fit with the audio context if necessary.
//
// Decode takes the ownership of src, and Stream's Close function closes src.
func Decode(context *audio.Context, src io.ReadCloser) (*Stream, error) {
func Decode(context *audio.Context, src audio.ReadSeekCloser) (*Stream, error) {
buf := make([]byte, 12)
n, err := io.ReadFull(src, buf)
if n != len(buf) {