Add EBML elements (#103)

- SegmentUID
- SegmentFilename
- Position
- Tags
- Tag
- SimpleTag
- TagName
- TagString
- TagBinary

elementtable.go

@@ -27,13 +27,15 @@ type elementTable map[ElementType]elementDef
 
 var table = elementTable{
 	ElementSeekHead:               elementDef{[]byte{0x11, 0x4D, 0x9B, 0x74}, TypeMaster, true},
+	ElementTags:                   elementDef{[]byte{0x12, 0x54, 0xC3, 0x67}, TypeMaster, true},
 	ElementInfo:                   elementDef{[]byte{0x15, 0x49, 0xA9, 0x66}, TypeMaster, true},
 	ElementSegment:                elementDef{[]byte{0x18, 0x53, 0x80, 0x67}, TypeMaster, false},
 	ElementTracks:                 elementDef{[]byte{0x16, 0x54, 0xAE, 0x6B}, TypeMaster, true},
 	ElementEBML:                   elementDef{[]byte{0x1A, 0x45, 0xDF, 0xA3}, TypeMaster, false},
 	ElementCues:                   elementDef{[]byte{0x1C, 0x53, 0xBB, 0x6B}, TypeMaster, true},
 	ElementCluster:                elementDef{[]byte{0x1F, 0x43, 0xB6, 0x75}, TypeMaster, true},
 	ElementDefaultDuration:        elementDef{[]byte{0x23, 0xE3, 0x83}, TypeUInt, false},
+	ElementCodecName:              elementDef{[]byte{0x25, 0x86, 0x88}, TypeString, false},
 	ElementTimecodeScale:          elementDef{[]byte{0x2A, 0xD7, 0xB1}, TypeUInt, false},
 	ElementEBMLVersion:            elementDef{[]byte{0x42, 0x86}, TypeUInt, false},
 	ElementEBMLReadVersion:        elementDef{[]byte{0x42, 0xF7}, TypeUInt, false},
@@ -42,8 +44,11 @@ var table = elementTable{
 	ElementEBMLDocType:            elementDef{[]byte{0x42, 0x82}, TypeString, false},
 	ElementEBMLDocTypeVersion:     elementDef{[]byte{0x42, 0x87}, TypeUInt, false},
 	ElementEBMLDocTypeReadVersion: elementDef{[]byte{0x42, 0x85}, TypeUInt, false},
+	ElementTagBinary:              elementDef{[]byte{0x44, 0x85}, TypeBinary, false},
+	ElementTagString:              elementDef{[]byte{0x44, 0x87}, TypeString, false},
 	ElementDateUTC:                elementDef{[]byte{0x44, 0x61}, TypeDate, false},
 	ElementDuration:               elementDef{[]byte{0x44, 0x89}, TypeFloat, false},
+	ElementTagName:                elementDef{[]byte{0x45, 0xA3}, TypeString, false},
 	ElementSeek:                   elementDef{[]byte{0x4D, 0xBB}, TypeMaster, false},
 	ElementSeekID:                 elementDef{[]byte{0x53, 0xAB}, TypeBinary, false},
 	ElementSeekPosition:           elementDef{[]byte{0x53, 0xAC}, TypeUInt, false},
@@ -54,14 +59,20 @@ var table = elementTable{
 	ElementSeekPreRoll:            elementDef{[]byte{0x56, 0xBB}, TypeUInt, false},
 	ElementWritingApp:             elementDef{[]byte{0x57, 0x41}, TypeString, false},
 	ElementCodecPrivate:           elementDef{[]byte{0x63, 0xA2}, TypeBinary, false},
+	ElementSimpleTag:              elementDef{[]byte{0x67, 0xC8}, TypeMaster, false},
+	ElementTag:                    elementDef{[]byte{0x73, 0x73}, TypeMaster, false},
+	ElementSegmentFilename:        elementDef{[]byte{0x73, 0x84}, TypeString, false},
+	ElementSegmentUID:             elementDef{[]byte{0x73, 0xA4}, TypeBinary, false},
 	ElementTrackUID:               elementDef{[]byte{0x73, 0xC5}, TypeUInt, false},
+	ElementTitle:                  elementDef{[]byte{0x7B, 0xA9}, TypeString, false},
 	ElementTrackType:              elementDef{[]byte{0x83}, TypeUInt, false},
 	ElementCodecID:                elementDef{[]byte{0x86}, TypeString, false},
 	ElementChannels:               elementDef{[]byte{0x9F}, TypeUInt, false},
 	ElementSimpleBlock:            elementDef{[]byte{0xA3}, TypeBlock, false},
 	ElementBlockGroup:             elementDef{[]byte{0xA0}, TypeMaster, false},
 	ElementBlockDuration:          elementDef{[]byte{0x9B}, TypeUInt, false},
 	ElementBlock:                  elementDef{[]byte{0xA1}, TypeBlock, false},
+	ElementPosition:               elementDef{[]byte{0xA7}, TypeUInt, false},
 	ElementPrevSize:               elementDef{[]byte{0xAB}, TypeUInt, false},
 	ElementTrackEntry:             elementDef{[]byte{0xAE}, TypeMaster, false},
 	ElementPixelWidth:             elementDef{[]byte{0xB0}, TypeUInt, false},

elementtype.go

@@ -46,6 +46,8 @@ const (
 	ElementSeekPosition
 
 	ElementInfo
+	ElementSegmentUID
+	ElementSegmentFilename
 	ElementTimestampScale
 	ElementDuration
 	ElementDateUTC
@@ -55,6 +57,7 @@ const (
 
 	ElementCluster
 	ElementTimestamp
+	ElementPosition
 	ElementPrevSize
 	ElementSimpleBlock
 	ElementBlockGroup
@@ -121,6 +124,13 @@ const (
 	ElementCueClusterPosition
 	ElementCueBlockNumber
 
+	ElementTags
+	ElementTag
+	ElementSimpleTag
+	ElementTagName
+	ElementTagString
+	ElementTagBinary
+
 	elementMax
 )
 
@@ -162,6 +172,10 @@ func (i ElementType) String() string {
 		return "SeekPosition"
 	case ElementInfo:
 		return "Info"
+	case ElementSegmentUID:
+		return "SegmentUID"
+	case ElementSegmentFilename:
+		return "SegmentFilename"
 	case ElementTimestampScale:
 		return "TimestampScale"
 	case ElementDuration:
@@ -178,6 +192,8 @@ func (i ElementType) String() string {
 		return "Cluster"
 	case ElementTimestamp:
 		return "Timestamp"
+	case ElementPosition:
+		return "Position"
 	case ElementPrevSize:
 		return "PrevSize"
 	case ElementSimpleBlock:
@@ -304,6 +320,18 @@ func (i ElementType) String() string {
 		return "CueClusterPosition"
 	case ElementCueBlockNumber:
 		return "CueBlockNumber"
+	case ElementTags:
+		return "Tags"
+	case ElementTag:
+		return "Tag"
+	case ElementSimpleTag:
+		return "SimpleTag"
+	case ElementTagName:
+		return "TagName"
+	case ElementTagString:
+		return "TagString"
+	case ElementTagBinary:
+		return "TagBinary"
 	default:
 		return "unknown"
 	}
@@ -347,6 +375,10 @@ func ElementTypeFromString(s string) (ElementType, error) {
 		return ElementSeekPosition, nil
 	case "Info":
 		return ElementInfo, nil
+	case "SegmentUID":
+		return ElementSegmentUID, nil
+	case "SegmentFilename":
+		return ElementSegmentFilename, nil
 	case "TimestampScale":
 		return ElementTimestampScale, nil
 	case "Duration":
@@ -363,6 +395,8 @@ func ElementTypeFromString(s string) (ElementType, error) {
 		return ElementCluster, nil
 	case "Timestamp":
 		return ElementTimestamp, nil
+	case "Position":
+		return ElementPosition, nil
 	case "PrevSize":
 		return ElementPrevSize, nil
 	case "SimpleBlock":
@@ -490,6 +524,19 @@ func ElementTypeFromString(s string) (ElementType, error) {
 	case "CueBlockNumber":
 		return ElementCueBlockNumber, nil
 
+	case "Tags":
+		return ElementTags, nil
+	case "Tag":
+		return ElementTag, nil
+	case "SimpleTag":
+		return ElementSimpleTag, nil
+	case "TagName":
+		return ElementTagName, nil
+	case "TagString":
+		return ElementTagString, nil
+	case "TagBinary":
+		return ElementTagBinary, nil
+
 		// WebM aliases
 	case "TimecodeScale":
 		return ElementTimecodeScale, nil