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server/vendor/github.com/pion/sdp/v3/time_description.go

@@ -0,0 +1,75 @@
+// SPDX-FileCopyrightText: 2023 The Pion community <https://pion.ly>
+// SPDX-License-Identifier: MIT
+
+package sdp
+
+import (
+	"strconv"
+)
+
+// TimeDescription describes "t=", "r=" fields of the session description
+// which are used to specify the start and stop times for a session as well as
+// repeat intervals and durations for the scheduled session.
+type TimeDescription struct {
+	// t=<start-time> <stop-time>
+	// https://tools.ietf.org/html/rfc4566#section-5.9
+	Timing Timing
+
+	// r=<repeat interval> <active duration> <offsets from start-time>
+	// https://tools.ietf.org/html/rfc4566#section-5.10
+	RepeatTimes []RepeatTime
+}
+
+// Timing defines the "t=" field's structured representation for the start and
+// stop times.
+type Timing struct {
+	StartTime uint64
+	StopTime  uint64
+}
+
+func (t Timing) String() string {
+	return stringFromMarshal(t.marshalInto, t.marshalSize)
+}
+
+func (t Timing) marshalInto(b []byte) []byte {
+	b = append(strconv.AppendUint(b, t.StartTime, 10), ' ')
+	return strconv.AppendUint(b, t.StopTime, 10)
+}
+
+func (t Timing) marshalSize() (size int) {
+	return lenUint(t.StartTime) + 1 + lenUint(t.StopTime)
+}
+
+// RepeatTime describes the "r=" fields of the session description which
+// represents the intervals and durations for repeated scheduled sessions.
+type RepeatTime struct {
+	Interval int64
+	Duration int64
+	Offsets  []int64
+}
+
+func (r RepeatTime) String() string {
+	return stringFromMarshal(r.marshalInto, r.marshalSize)
+}
+
+func (r RepeatTime) marshalInto(b []byte) []byte {
+	b = strconv.AppendInt(b, r.Interval, 10)
+	b = append(b, ' ')
+	b = strconv.AppendInt(b, r.Duration, 10)
+	for _, value := range r.Offsets {
+		b = append(b, ' ')
+		b = strconv.AppendInt(b, value, 10)
+	}
+
+	return b
+}
+
+func (r RepeatTime) marshalSize() (size int) {
+	size = lenInt(r.Interval)
+	size += 1 + lenInt(r.Duration)
+	for _, o := range r.Offsets {
+		size += 1 + lenInt(o)
+	}
+
+	return
+}