diff options
Diffstat (limited to 'vendor/github.com/abema/go-mp4/internal/bitio/write.go')
-rw-r--r-- | vendor/github.com/abema/go-mp4/internal/bitio/write.go | 61 |
1 files changed, 0 insertions, 61 deletions
diff --git a/vendor/github.com/abema/go-mp4/internal/bitio/write.go b/vendor/github.com/abema/go-mp4/internal/bitio/write.go deleted file mode 100644 index 5f63dd2d2..000000000 --- a/vendor/github.com/abema/go-mp4/internal/bitio/write.go +++ /dev/null @@ -1,61 +0,0 @@ -package bitio - -import ( - "io" -) - -type Writer interface { - io.Writer - - // alignment: - // |-1-byte-block-|--------------|--------------|--------------| - // |<-offset->|<-------------------width---------------------->| - WriteBits(data []byte, width uint) error - - WriteBit(bit bool) error -} - -type writer struct { - writer io.Writer - octet byte - width uint -} - -func NewWriter(w io.Writer) Writer { - return &writer{writer: w} -} - -func (w *writer) Write(p []byte) (n int, err error) { - if w.width != 0 { - return 0, ErrInvalidAlignment - } - return w.writer.Write(p) -} - -func (w *writer) WriteBits(data []byte, width uint) error { - length := uint(len(data)) * 8 - offset := length - width - for i := offset; i < length; i++ { - oi := i / 8 - if err := w.WriteBit((data[oi]>>(7-i%8))&0x01 != 0); err != nil { - return err - } - } - return nil -} - -func (w *writer) WriteBit(bit bool) error { - if bit { - w.octet |= 0x1 << (7 - w.width) - } - w.width++ - - if w.width == 8 { - if _, err := w.writer.Write([]byte{w.octet}); err != nil { - return err - } - w.octet = 0x00 - w.width = 0 - } - return nil -} |