Adding base UTCTiming

Author: Andrew Sinclair

examples/live.go

@@ -6,7 +6,7 @@ import (
 	"github.com/zencoder/go-dash/mpd"
 )
 
-func exampleLive() {
+func main() {
 	m := mpd.NewMPD(mpd.DASH_PROFILE_LIVE, "PT6M16S", "PT1.97S")
 
 	audioAS, _ := m.AddNewAdaptationSetAudio(mpd.DASH_MIME_TYPE_AUDIO_MP4, true, 1, "und")
@@ -29,6 +29,12 @@ func exampleLive() {
 	subtitleAS, _ := m.AddNewAdaptationSetSubtitle(mpd.DASH_MIME_TYPE_SUBTITLE_VTT, "en")
 	subtitleRep, _ := subtitleAS.AddNewRepresentationSubtitle(256, "subtitle_en")
 	_ = subtitleRep.SetNewBaseURL("http://example.com/content/sintel/subtitles/subtitles_en.vtt")
+	schemeIDURI := "urn:mpeg:dash:utc:direct:2014"
+	value := "2019-10-23T15:56:29Z"
+	m.UTCTiming = &mpd.DescriptorType{
+		SchemeIDURI: &schemeIDURI,
+		Value:       &value,
+	}
 
 	mpdStr, _ := m.WriteToString()
 	fmt.Println(mpdStr)

go.mod

@@ -1 +1,3 @@
 module github.com/zencoder/go-dash
+
+go 1.13

mpd/fixtures/live_profile_dynamic.mpd

@@ -36,4 +36,5 @@
       </Representation>
     </AdaptationSet>
   </Period>
+  <UTCTiming></UTCTiming>
 </MPD>

mpd/mpd.go

@@ -69,7 +69,8 @@ type MPD struct {
 	MinimumUpdatePeriod       *string `xml:"minimumUpdatePeriod,attr"`
 	BaseURL                   string  `xml:"BaseURL,omitempty"`
 	period                    *Period
-	Periods                   []*Period `xml:"Period,omitempty"`
+	Periods                   []*Period       `xml:"Period,omitempty"`
+	UTCTiming                 *DescriptorType `xml:"UTCTiming,omitempty"`
 }
 
 type Period struct {
@@ -478,6 +479,7 @@ func NewDynamicMPD(profile DashProfile, availabilityStartTime, minBufferTime str
 		MinBufferTime:         Strptr(minBufferTime),
 		period:                period,
 		Periods:               []*Period{period},
+		UTCTiming:             &DescriptorType{},
 	}
 
 	for i := range attributes {

mpd/mpd_read_write_test.go

@@ -62,6 +62,7 @@ func TestNewDynamicMPDLiveWriteToString(t *testing.T) {
 	expectedXML := `<?xml version="1.0" encoding="UTF-8"?>
 <MPD xmlns="urn:mpeg:dash:schema:mpd:2011" profiles="urn:mpeg:dash:profile:isoff-live:2011" type="dynamic" mediaPresentationDuration="PT6M16S" minBufferTime="PT1.97S" availabilityStartTime="1970-01-01T00:00:00Z" minimumUpdatePeriod="PT5S">
   <Period></Period>
+  <UTCTiming></UTCTiming>
 </MPD>
 `
 	require.EqualString(t, expectedXML, xmlStr)

mpd/mpd_test.go

@@ -81,6 +81,7 @@ func TestNewDynamicMPDLive(t *testing.T) {
 		MinimumUpdatePeriod:       Strptr(VALID_MINIMUM_UPDATE_PERIOD),
 		period:                    &Period{},
 		Periods:                   []*Period{{}},
+		UTCTiming:                 &DescriptorType{},
 	}
 
 	expectedString, err := expectedMPD.WriteToString()