1 files changed, 39 insertions, 0 deletions
diff --git a/vendor/github.com/pion/rtp/transportccextension.go b/vendor/github.com/pion/rtp/transportccextension.go
new file mode 100644
index 0000000..f9ffe4e
--- /dev/null
+++ b/vendor/github.com/pion/rtp/transportccextension.go
@@ -0,0 +1,39 @@
+package rtp
+
+import (
+	"encoding/binary"
+)
+
+const (
+	// transport-wide sequence
+	transportCCExtensionSize = 2
+)
+
+// TransportCCExtension is a extension payload format in
+// https://tools.ietf.org/html/draft-holmer-rmcat-transport-wide-cc-extensions-01
+// 0                   1                   2                   3
+// 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+// |       0xBE    |    0xDE       |           length=1            |
+// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+// |  ID   | L=1   |transport-wide sequence number | zero padding  |
+// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+type TransportCCExtension struct {
+	TransportSequence uint16
+}
+
+// Marshal serializes the members to buffer
+func (t *TransportCCExtension) Marshal() ([]byte, error) {
+	buf := make([]byte, transportCCExtensionSize)
+	binary.BigEndian.PutUint16(buf[0:2], t.TransportSequence)
+	return buf, nil
+}
+
+// Unmarshal parses the passed byte slice and stores the result in the members
+func (t *TransportCCExtension) Unmarshal(rawData []byte) error {
+	if len(rawData) < transportCCExtensionSize {
+		return errTooSmall
+	}
+	t.TransportSequence = binary.BigEndian.Uint16(rawData[0:2])
+	return nil
+}