QMedia constants

• Annotation types
• Audio channel labels
• Audio mix identifiers
• Channel usage
• Colors
• Controller parts
• Controller types
• Data exchange flags
• Errors
• Event masks
• Event types
• File types
• Graphics modes
• Looping options
• Media types
• Movie placement
• Obsolete
• Quality
• Search flags
• Text display flags
• Text justification
• Track usage
• VR HotSpot types
• VR Node types
• VR Nudge direction