Rewrite magic source

pkg/mpegts/client.go

@@ -14,7 +14,7 @@ import (
 type Client struct {
 	URL string
 
-	rd *core.ReadSeeker
+	rd *core.ReadBuffer
 
 	medias    []*core.Media
 	receivers []*core.Receiver
@@ -23,7 +23,7 @@ type Client struct {
 }
 
 func Open(rd io.Reader) (*Client, error) {
-	client := &Client{rd: core.NewReadSeeker(rd)}
+	client := &Client{rd: core.NewReadBuffer(rd)}
 	if err := client.describe(); err != nil {
 		return nil, err
 	}
@@ -32,7 +32,7 @@ func Open(rd io.Reader) (*Client, error) {
 
 func (c *Client) describe() error {
 	c.rd.BufferSize = core.ProbeSize
-	defer c.rd.Rewind()
+	defer c.rd.Reset()
 
 	rd := NewReader()