public DataInformationBox(BoxLocation loc, SequentialReader sr)
: base(loc)
{
Boxes = BoxReader.ReadBoxes(sr, loc);
}
public ItemPropertyBox(BoxLocation loc, SequentialReader sr) : base(loc)
{
Boxes = BoxReader.ReadBoxes(sr, loc);
}
private const int ExifTag = 0x45786966; // Exif
public static DirectoryList ReadMetadata(Stream stream)
{
var directories = new List <Directory>();
//
// Read all boxes from the file
//
var reader = new SequentialStreamReader(stream);
var boxes = BoxReader.ReadBoxes(reader);
//
// Map those boxes to directories
//
ParseQuickTimeTest();
uint primaryItem = boxes.Descendant <PrimaryItemBox>()?.PrimaryItem ?? uint.MaxValue;
var itemRefs = (boxes.Descendant <ItemReferenceBox>()?.Boxes ?? new SingleItemTypeReferenceBox[0])
.Where(i => i.Type == BoxTypes.ThmbTag || i.Type == BoxTypes.CdscTag).ToList();
ParseImageProperties();
if (stream.CanSeek)
{
ParseItemSegments();
}
return(directories);
void ParseQuickTimeTest()
{
if (boxes.Descendant <FileTypeBox>() is { } ftype)
{
var dir = new QuickTimeFileTypeDirectory();
if (ftype.MajorBrand > 0)
{
dir.Set(QuickTimeFileTypeDirectory.TagMajorBrand, ftype.MajorBrandString);
}
if (ftype.MinorBrand > 0)
{
dir.Set(QuickTimeFileTypeDirectory.TagMinorVersion, ftype.MinorBrandString);
}
if (ftype.CompatibleBrands.Count > 0)
{
dir.Set(
QuickTimeFileTypeDirectory.TagCompatibleBrands,
string.Join(", ", ftype.CompatibleBrandStrings.ToArray()));
}
directories.Add(dir);
}
}
void ParseImageProperties()
{
uint[] allPrimaryTiles = (boxes.Descendant <ItemReferenceBox>()?.Boxes ?? new SingleItemTypeReferenceBox[0])
.SelectMany(i => i.FromItemId == primaryItem && i.Type == BoxTypes.DimgTag ? i.ToItemIds : new uint[0])
.ToArray();
var itemPropertyBox = boxes.Descendant <ItemPropertyBox>();
if (itemPropertyBox == null)
{
return;
}
var props = itemPropertyBox.Boxes.Descendant <ItemPropertyContainerBox>().Boxes;
var associations = itemPropertyBox.Boxes.Descendant <ItemPropertyAssociationBox>();
ParsePropertyBoxes(
"HEIC Primary Item Properties",
ImageProperties(primaryItem, allPrimaryTiles, associations, props));
foreach (var itemRef in itemRefs)
{
ParsePropertyBoxes(
"HEIC Thumbnail Properties",
ImageProperties(itemRef.FromItemId, new uint[0], associations, props));
}
return;
public DataReferenceBox(BoxLocation location, SequentialReader reader)
: base(location, reader)
{
BoxCount = reader.GetUInt32();
Boxes = BoxReader.ReadBoxes(reader, location);
}
public ItemInformationBox(BoxLocation location, SequentialReader reader)
: base(location, reader)
{
Count = Version == 0 ? reader.GetUInt16() : reader.GetUInt32();
Boxes = BoxReader.ReadBoxes(reader, location);
}
public MetaBox(BoxLocation location, SequentialReader reader)
: base(location, reader)
{
Boxes = BoxReader.ReadBoxes(reader, location);
}