Add extra track flags (#177)

Author: t-richards

elementtable.go

@@ -116,6 +116,11 @@ var table = elementTable{
 	ElementPixelCropLeft:               elementDef{[]byte{0x54, 0xCC}, DataTypeUInt, false},
 	ElementPixelCropRight:              elementDef{[]byte{0x54, 0xDD}, DataTypeUInt, false},
 	ElementFlagForced:                  elementDef{[]byte{0x55, 0xAA}, DataTypeUInt, false},
+	ElementFlagHearingImpaired:         elementDef{[]byte{0x55, 0xAB}, DataTypeUInt, false},
+	ElementFlagVisualImpaired:          elementDef{[]byte{0x55, 0xAC}, DataTypeUInt, false},
+	ElementFlagTextDescriptions:        elementDef{[]byte{0x55, 0xAD}, DataTypeUInt, false},
+	ElementFlagOriginal:                elementDef{[]byte{0x55, 0xAE}, DataTypeUInt, false},
+	ElementFlagCommentary:              elementDef{[]byte{0x55, 0xAF}, DataTypeUInt, false},
 	ElementColour:                      elementDef{[]byte{0x55, 0xB0}, DataTypeMaster, false},
 	ElementMatrixCoefficients:          elementDef{[]byte{0x55, 0xB1}, DataTypeUInt, false},
 	ElementBitsPerChannel:              elementDef{[]byte{0x55, 0xB2}, DataTypeUInt, false},

elementtype.go

@@ -97,6 +97,11 @@ const (
 	ElementFlagEnabled
 	ElementFlagDefault
 	ElementFlagForced
+	ElementFlagHearingImpaired
+	ElementFlagVisualImpaired
+	ElementFlagTextDescriptions
+	ElementFlagOriginal
+	ElementFlagCommentary
 	ElementFlagLacing
 	ElementMinCache
 	ElementMaxCache
@@ -343,6 +348,11 @@ var elementTypeName = map[ElementType]string{
 	ElementFlagEnabled:                 "FlagEnabled",
 	ElementFlagDefault:                 "FlagDefault",
 	ElementFlagForced:                  "FlagForced",
+	ElementFlagHearingImpaired:         "FlagHearingImpaired",
+	ElementFlagVisualImpaired:          "FlagVisualImpaired",
+	ElementFlagTextDescriptions:        "FlagTextDescriptions",
+	ElementFlagOriginal:                "FlagOriginal",
+	ElementFlagCommentary:              "FlagCommentary",
 	ElementFlagLacing:                  "FlagLacing",
 	ElementMinCache:                    "MinCache",
 	ElementMaxCache:                    "MaxCache",