summaryrefslogtreecommitdiff
path: root/vendor/github.com/abema/go-mp4/internal/bitio/write.go
diff options
context:
space:
mode:
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.go61
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
-}