public DirectoryList ReadJpegSegments(IEnumerable <JpegSegment> segments)
{
// Ensure collection materialised (avoiding multiple lazy enumeration)
segments = segments.ToList();
var directories = segments
.Where(IsXmpSegment)
.Select(segment => Extract(segment.Bytes, JpegSegmentPreambleBytes.Length, segment.Bytes.Length - JpegSegmentPreambleBytes.Length))
.Cast <Directory>()
.ToList();
var extensionGroups = segments.Where(IsExtendedXmpSegment).GroupBy(GetExtendedDataGuid);
foreach (var extensionGroup in extensionGroups)
{
var buffer = new MemoryStream();
foreach (var segment in extensionGroup)
{
var N = JpegSegmentPreambleExtensionBytes.Length + 32 + 4 + 4;
buffer.Write(segment.Bytes, N, segment.Bytes.Length - N);
}
buffer.Position = 0;
var directory = new XmpDirectory();
var xmpMeta = XmpMetaFactory.Parse(buffer);
directory.SetXmpMeta(xmpMeta);
directories.Add(directory);
}
return(directories);
}
public XmpReaderTest()
{
var jpegSegments = new [] { File.ReadAllBytes("Tests/Data/withXmpAndIptc.jpg.app1.1") };
var directories = new XmpReader().ReadJpegSegments(jpegSegments, JpegSegmentType.App1);
_directory = directories.OfType<XmpDirectory>().ToList().Single();
Assert.False(_directory.HasError);
}
public XmpDirectory Extract([NotNull] byte[] xmpBytes, int offset, int length)
{
if (offset < 0)
{
throw new ArgumentOutOfRangeException(nameof(offset), "Must be zero or greater.");
}
if (length < 0)
{
throw new ArgumentOutOfRangeException(nameof(length), "Must be zero or greater.");
}
if (xmpBytes.Length < offset + length)
{
throw new ArgumentException("Extends beyond length of byte array.", nameof(length));
}
// Trim any trailing null bytes
// https://github.com/drewnoakes/metadata-extractor-dotnet/issues/154
while (xmpBytes[offset + length - 1] == 0)
{
length--;
}
var directory = new XmpDirectory();
try
{
var xmpMeta = XmpMetaFactory.ParseFromBuffer(xmpBytes, offset, length);
directory.SetXmpMeta(xmpMeta);
}
catch (XmpException e)
{
directory.AddError("Error processing XMP data: " + e.Message);
}
return(directory);
}
/// <exception cref="XmpException"/>
private static void ProcessXmpTags(XmpDirectory directory, IXmpMeta xmpMeta)
{
// store the XMPMeta object on the directory in case others wish to use it
directory.SetXmpMeta(xmpMeta);
// read all the tags and send them to the directory
// I've added some popular tags, feel free to add more tags
ProcessXmpTag(xmpMeta, directory, XmpDirectory.TagLensInfo, FormatType.String);
ProcessXmpTag(xmpMeta, directory, XmpDirectory.TagLens, FormatType.String);
ProcessXmpTag(xmpMeta, directory, XmpDirectory.TagCameraSerialNumber, FormatType.String);
ProcessXmpTag(xmpMeta, directory, XmpDirectory.TagFirmware, FormatType.String);
ProcessXmpTag(xmpMeta, directory, XmpDirectory.TagMake, FormatType.String);
ProcessXmpTag(xmpMeta, directory, XmpDirectory.TagModel, FormatType.String);
ProcessXmpTag(xmpMeta, directory, XmpDirectory.TagExposureTime, FormatType.String);
ProcessXmpTag(xmpMeta, directory, XmpDirectory.TagExposureProgram, FormatType.Int);
ProcessXmpTag(xmpMeta, directory, XmpDirectory.TagApertureValue, FormatType.Rational);
ProcessXmpTag(xmpMeta, directory, XmpDirectory.TagFNumber, FormatType.Rational);
ProcessXmpTag(xmpMeta, directory, XmpDirectory.TagFocalLength, FormatType.Rational);
ProcessXmpTag(xmpMeta, directory, XmpDirectory.TagShutterSpeed, FormatType.Rational);
ProcessXmpDateTag(xmpMeta, directory, XmpDirectory.TagDateTimeOriginal);
ProcessXmpDateTag(xmpMeta, directory, XmpDirectory.TagDateTimeDigitized);
ProcessXmpTag(xmpMeta, directory, XmpDirectory.TagRating, FormatType.Double);
ProcessXmpTag(xmpMeta, directory, XmpDirectory.TagLabel, FormatType.String);
// this requires further research
// processXmpTag(xmpMeta, directory, Schema.DUBLIN_CORE_SPECIFIC_PROPERTIES, "dc:title", XmpDirectory.TAG_TITLE, FMT_STRING);
ProcessXmpTag(xmpMeta, directory, XmpDirectory.TagSubject, FormatType.StringArray);
// processXmpDateTag(xmpMeta, directory, Schema.DUBLIN_CORE_SPECIFIC_PROPERTIES, "dc:date", XmpDirectory.TAG_DATE);
// processXmpTag(xmpMeta, directory, Schema.DUBLIN_CORE_SPECIFIC_PROPERTIES, "dc:type", XmpDirectory.TAG_TYPE, FMT_STRING);
// processXmpTag(xmpMeta, directory, Schema.DUBLIN_CORE_SPECIFIC_PROPERTIES, "dc:description", XmpDirectory.TAG_DESCRIPTION, FMT_STRING);
// processXmpTag(xmpMeta, directory, Schema.DUBLIN_CORE_SPECIFIC_PROPERTIES, "dc:relation", XmpDirectory.TAG_RELATION, FMT_STRING);
// processXmpTag(xmpMeta, directory, Schema.DUBLIN_CORE_SPECIFIC_PROPERTIES, "dc:coverage", XmpDirectory.TAG_COVERAGE, FMT_STRING);
// processXmpTag(xmpMeta, directory, Schema.DUBLIN_CORE_SPECIFIC_PROPERTIES, "dc:creator", XmpDirectory.TAG_CREATOR, FMT_STRING);
// processXmpTag(xmpMeta, directory, Schema.DUBLIN_CORE_SPECIFIC_PROPERTIES, "dc:publisher", XmpDirectory.TAG_PUBLISHER, FMT_STRING);
// processXmpTag(xmpMeta, directory, Schema.DUBLIN_CORE_SPECIFIC_PROPERTIES, "dc:contributor", XmpDirectory.TAG_CONTRIBUTOR, FMT_STRING);
// processXmpTag(xmpMeta, directory, Schema.DUBLIN_CORE_SPECIFIC_PROPERTIES, "dc:rights", XmpDirectory.TAG_RIGHTS, FMT_STRING);
// processXmpTag(xmpMeta, directory, Schema.DUBLIN_CORE_SPECIFIC_PROPERTIES, "dc:format", XmpDirectory.TAG_FORMAT, FMT_STRING);
// processXmpTag(xmpMeta, directory, Schema.DUBLIN_CORE_SPECIFIC_PROPERTIES, "dc:identifier", XmpDirectory.TAG_IDENTIFIER, FMT_STRING);
// processXmpTag(xmpMeta, directory, Schema.DUBLIN_CORE_SPECIFIC_PROPERTIES, "dc:language", XmpDirectory.TAG_LANGUAGE, FMT_STRING);
// processXmpTag(xmpMeta, directory, Schema.DUBLIN_CORE_SPECIFIC_PROPERTIES, "dc:audience", XmpDirectory.TAG_AUDIENCE, FMT_STRING);
// processXmpTag(xmpMeta, directory, Schema.DUBLIN_CORE_SPECIFIC_PROPERTIES, "dc:provenance", XmpDirectory.TAG_PROVENANCE, FMT_STRING);
// processXmpTag(xmpMeta, directory, Schema.DUBLIN_CORE_SPECIFIC_PROPERTIES, "dc:rightsHolder", XmpDirectory.TAG_RIGHTS_HOLDER, FMT_STRING);
// processXmpTag(xmpMeta, directory, Schema.DUBLIN_CORE_SPECIFIC_PROPERTIES, "dc:instructionalMethod", XmpDirectory.TAG_INSTRUCTIONAL_METHOD,
// FMT_STRING);
// processXmpTag(xmpMeta, directory, Schema.DUBLIN_CORE_SPECIFIC_PROPERTIES, "dc:accrualMethod", XmpDirectory.TAG_ACCRUAL_METHOD, FMT_STRING);
// processXmpTag(xmpMeta, directory, Schema.DUBLIN_CORE_SPECIFIC_PROPERTIES, "dc:accrualPeriodicity", XmpDirectory.TAG_ACCRUAL_PERIODICITY,
// FMT_STRING);
// processXmpTag(xmpMeta, directory, Schema.DUBLIN_CORE_SPECIFIC_PROPERTIES, "dc:accrualPolicy", XmpDirectory.TAG_ACCRUAL_POLICY, FMT_STRING);
foreach (var prop in xmpMeta.Properties)
{
var path = prop.Path;
var value = prop.Value;
if (path != null && value != null)
{
directory.AddProperty(path, value);
}
}
}
private static void ProcessXmpTags([NotNull] XmpDirectory directory, [NotNull] IXmpMeta xmpMeta)
{
// store the XMPMeta object on the directory in case others wish to use it
directory.SetXmpMeta(xmpMeta);
// extract selected XMP tags
ProcessXmpTag(xmpMeta, directory, XmpDirectory.TagLensInfo, FormatType.String);
ProcessXmpTag(xmpMeta, directory, XmpDirectory.TagLens, FormatType.String);
ProcessXmpTag(xmpMeta, directory, XmpDirectory.TagCameraSerialNumber, FormatType.String);
ProcessXmpTag(xmpMeta, directory, XmpDirectory.TagFirmware, FormatType.String);
ProcessXmpTag(xmpMeta, directory, XmpDirectory.TagMake, FormatType.String);
ProcessXmpTag(xmpMeta, directory, XmpDirectory.TagModel, FormatType.String);
ProcessXmpTag(xmpMeta, directory, XmpDirectory.TagExposureTime, FormatType.String);
ProcessXmpTag(xmpMeta, directory, XmpDirectory.TagExposureProgram, FormatType.Int);
ProcessXmpTag(xmpMeta, directory, XmpDirectory.TagApertureValue, FormatType.Rational);
ProcessXmpTag(xmpMeta, directory, XmpDirectory.TagFNumber, FormatType.Rational);
ProcessXmpTag(xmpMeta, directory, XmpDirectory.TagFocalLength, FormatType.Rational);
ProcessXmpTag(xmpMeta, directory, XmpDirectory.TagShutterSpeed, FormatType.Rational);
ProcessXmpTag(xmpMeta, directory, XmpDirectory.TagDateTimeOriginal, FormatType.String);
ProcessXmpTag(xmpMeta, directory, XmpDirectory.TagDateTimeDigitized, FormatType.String);
ProcessXmpTag(xmpMeta, directory, XmpDirectory.TagBaseUrl, FormatType.String);
ProcessXmpTag(xmpMeta, directory, XmpDirectory.TagCreateDate, FormatType.String);
ProcessXmpTag(xmpMeta, directory, XmpDirectory.TagCreatorTool, FormatType.String);
ProcessXmpTag(xmpMeta, directory, XmpDirectory.TagIdentifier, FormatType.String);
ProcessXmpTag(xmpMeta, directory, XmpDirectory.TagMetadataDate, FormatType.String);
ProcessXmpTag(xmpMeta, directory, XmpDirectory.TagModifyDate, FormatType.String);
ProcessXmpTag(xmpMeta, directory, XmpDirectory.TagNickname, FormatType.String);
ProcessXmpTag(xmpMeta, directory, XmpDirectory.TagRating, FormatType.Double);
ProcessXmpTag(xmpMeta, directory, XmpDirectory.TagLabel, FormatType.String);
ProcessXmpTag(xmpMeta, directory, XmpDirectory.TagSubject, FormatType.StringArray);
// this requires further research
// ProcessXmpTag(xmpMeta, directory, Schema.DUBLIN_CORE_SPECIFIC_PROPERTIES, "dc:title", XmpDirectory.TAG_TITLE, FMT_STRING);
// ProcessXmpDateTag(xmpMeta, directory, Schema.DUBLIN_CORE_SPECIFIC_PROPERTIES, "dc:date", XmpDirectory.TAG_DATE);
// ProcessXmpTag(xmpMeta, directory, Schema.DUBLIN_CORE_SPECIFIC_PROPERTIES, "dc:type", XmpDirectory.TAG_TYPE, FMT_STRING);
// ProcessXmpTag(xmpMeta, directory, Schema.DUBLIN_CORE_SPECIFIC_PROPERTIES, "dc:description", XmpDirectory.TAG_DESCRIPTION, FMT_STRING);
// ProcessXmpTag(xmpMeta, directory, Schema.DUBLIN_CORE_SPECIFIC_PROPERTIES, "dc:relation", XmpDirectory.TAG_RELATION, FMT_STRING);
// ProcessXmpTag(xmpMeta, directory, Schema.DUBLIN_CORE_SPECIFIC_PROPERTIES, "dc:coverage", XmpDirectory.TAG_COVERAGE, FMT_STRING);
// ProcessXmpTag(xmpMeta, directory, Schema.DUBLIN_CORE_SPECIFIC_PROPERTIES, "dc:creator", XmpDirectory.TAG_CREATOR, FMT_STRING);
// ProcessXmpTag(xmpMeta, directory, Schema.DUBLIN_CORE_SPECIFIC_PROPERTIES, "dc:publisher", XmpDirectory.TAG_PUBLISHER, FMT_STRING);
// ProcessXmpTag(xmpMeta, directory, Schema.DUBLIN_CORE_SPECIFIC_PROPERTIES, "dc:contributor", XmpDirectory.TAG_CONTRIBUTOR, FMT_STRING);
// ProcessXmpTag(xmpMeta, directory, Schema.DUBLIN_CORE_SPECIFIC_PROPERTIES, "dc:rights", XmpDirectory.TAG_RIGHTS, FMT_STRING);
// ProcessXmpTag(xmpMeta, directory, Schema.DUBLIN_CORE_SPECIFIC_PROPERTIES, "dc:format", XmpDirectory.TAG_FORMAT, FMT_STRING);
// ProcessXmpTag(xmpMeta, directory, Schema.DUBLIN_CORE_SPECIFIC_PROPERTIES, "dc:identifier", XmpDirectory.TAG_IDENTIFIER, FMT_STRING);
// ProcessXmpTag(xmpMeta, directory, Schema.DUBLIN_CORE_SPECIFIC_PROPERTIES, "dc:language", XmpDirectory.TAG_LANGUAGE, FMT_STRING);
// ProcessXmpTag(xmpMeta, directory, Schema.DUBLIN_CORE_SPECIFIC_PROPERTIES, "dc:audience", XmpDirectory.TAG_AUDIENCE, FMT_STRING);
// ProcessXmpTag(xmpMeta, directory, Schema.DUBLIN_CORE_SPECIFIC_PROPERTIES, "dc:provenance", XmpDirectory.TAG_PROVENANCE, FMT_STRING);
// ProcessXmpTag(xmpMeta, directory, Schema.DUBLIN_CORE_SPECIFIC_PROPERTIES, "dc:rightsHolder", XmpDirectory.TAG_RIGHTS_HOLDER, FMT_STRING);
// ProcessXmpTag(xmpMeta, directory, Schema.DUBLIN_CORE_SPECIFIC_PROPERTIES, "dc:instructionalMethod", XmpDirectory.TAG_INSTRUCTIONAL_METHOD, FMT_STRING);
// ProcessXmpTag(xmpMeta, directory, Schema.DUBLIN_CORE_SPECIFIC_PROPERTIES, "dc:accrualMethod", XmpDirectory.TAG_ACCRUAL_METHOD, FMT_STRING);
// ProcessXmpTag(xmpMeta, directory, Schema.DUBLIN_CORE_SPECIFIC_PROPERTIES, "dc:accrualPeriodicity", XmpDirectory.TAG_ACCRUAL_PERIODICITY, FMT_STRING);
// ProcessXmpTag(xmpMeta, directory, Schema.DUBLIN_CORE_SPECIFIC_PROPERTIES, "dc:accrualPolicy", XmpDirectory.TAG_ACCRUAL_POLICY, FMT_STRING);
}
public XmpDirectory Extract([NotNull] byte[] xmpBytes, int offset, int length)
{
var directory = new XmpDirectory();
try
{
var xmpMeta = XmpMetaFactory.ParseFromBuffer(xmpBytes, offset, length);
directory.SetXmpMeta(xmpMeta);
}
catch (XmpException e)
{
directory.AddError("Error processing XMP data: " + e.Message);
}
return(directory);
}
/// <summary>
/// Performs the XMP data extraction.
/// <para />
/// The extraction is done with Adobe's XMPCore library.
/// </summary>
public XmpDirectory Extract([NotNull] byte[] xmpBytes)
{
var directory = new XmpDirectory();
try
{
var xmpMeta = XmpMetaFactory.ParseFromBuffer(xmpBytes);
ProcessXmpTags(directory, xmpMeta);
}
catch (XmpException e)
{
directory.AddError("Error processing XMP data: " + e.Message);
}
return(directory);
}
/// <exception cref="XmpException"/>
private static void ProcessXmpDateTag([NotNull] IXmpMeta meta, [NotNull] XmpDirectory directory, int tagType)
{
string schemaNs;
string propName;
if (!XmpDirectory.TagSchemaMap.TryGetValue(tagType, out schemaNs) || !XmpDirectory.TagPropNameMap.TryGetValue(tagType, out propName))
{
return;
}
var cal = meta.GetPropertyCalendar(schemaNs, propName);
if (cal != null)
{
directory.Set(tagType, cal.GetTime());
}
}
public XmpDirectory Extract([NotNull] byte[] xmpBytes, int offset, int length)
{
if (offset < 0)
{
throw new ArgumentOutOfRangeException(nameof(offset), "Must be zero or greater.");
}
if (length < 0)
{
throw new ArgumentOutOfRangeException(nameof(length), "Must be zero or greater.");
}
if (xmpBytes.Length < offset + length)
{
throw new ArgumentException("Extends beyond length of byte array.", nameof(length));
}
// Trim any trailing null bytes
// https://github.com/drewnoakes/metadata-extractor-dotnet/issues/154
while (xmpBytes[offset + length - 1] == 0)
{
length--;
}
var directory = new XmpDirectory();
try
{
// Limit photoshop:DocumentAncestors node as it can reach over 100000 items and make parsing extremely slow.
// This is not a typical value but it may happen https://forums.adobe.com/thread/2081839
var parseOptions = new ParseOptions();
parseOptions.SetXMPNodesToLimit(new Dictionary <string, int>()
{
{ "photoshop:DocumentAncestors", 1000 }
});
var xmpMeta = XmpMetaFactory.ParseFromBuffer(xmpBytes, offset, length, parseOptions);
directory.SetXmpMeta(xmpMeta);
}
catch (XmpException e)
{
directory.AddError("Error processing XMP data: " + e.Message);
}
return(directory);
}
internal static TreeDirectory GetHierarchicalDirectory(XmpDirectory directories)
{
TreeDirectory root = new TreeDirectory();
TreeDirectory[] treeNodes = directories.XmpMeta.Properties.Where(x => x.Path != null).Select(x => new TreeDirectory(x)).ToArray();
var possibleChildrean = treeNodes.Select(x => new
{
Element = x,
PossibleChildrean = treeNodes.Where(y => y.Element.Path != x.Element.Path && y.Element.Path.StartsWith(x.Element.Path)).ToArray()
}).ToArray();
var childOfRoot = possibleChildrean.Where(x => !possibleChildrean.Any(y => y.PossibleChildrean.Contains(x.Element))).ToArray();
root.Childrean.AddRange(childOfRoot.Select(x => x.Element));
foreach (var child in childOfRoot)
{
child.Element.Parent = root;
}
foreach (var node in possibleChildrean)
{
TreeDirectory[] childOfNode = node.PossibleChildrean.Where(x => !possibleChildrean.Where(y => node.PossibleChildrean.Contains(y.Element)).Any(y => y.PossibleChildrean.Contains(x))).ToArray();
node.Element.Childrean.AddRange(childOfNode);
foreach (var child in childOfNode)
{
child.Parent = node.Element;
}
}
return root;
}
private static void ProcessXmpTag([NotNull] IXmpMeta meta, [NotNull] XmpDirectory directory, int tagType, FormatType formatCode)
{
string schemaNs;
string propName;
if (!XmpDirectory.TagSchemaMap.TryGetValue(tagType, out schemaNs) || !XmpDirectory.TagPropNameMap.TryGetValue(tagType, out propName))
{
return;
}
var property = meta.GetPropertyString(schemaNs, propName);
if (property == null)
{
return;
}
switch (formatCode)
{
case FormatType.Rational:
{
// TODO introduce Rational.TryParse
var rationalParts = property.Split('/').Take(2).ToArray();
if (rationalParts.Length == 2)
{
// TODO should this really be parsed as float?
float numerator;
float denominator;
if (float.TryParse(rationalParts[0], out numerator) && float.TryParse(rationalParts[1], out denominator))
{
directory.Set(tagType, new Rational((long)numerator, (long)denominator));
}
else
{
directory.AddError($"Unable to parse XMP property {propName} as a Rational.");
}
}
else
{
directory.AddError($"Error in rational format for tag {tagType}");
}
break;
}
case FormatType.Int:
{
int value;
if (int.TryParse(property, out value))
{
directory.Set(tagType, value);
}
else
{
directory.AddError($"Unable to parse XMP property {propName} as an int.");
}
break;
}
case FormatType.Double:
{
double value;
if (double.TryParse(property, out value))
{
directory.Set(tagType, value);
}
else
{
directory.AddError($"Unable to parse XMP property {propName} as a double.");
}
break;
}
case FormatType.String:
{
directory.Set(tagType, property);
break;
}
case FormatType.StringArray:
{
// XMP iterators are 1-based
var count = meta.CountArrayItems(schemaNs, propName);
var array = new string[count];
for (var i = 1; i <= count; i++)
{
array[i - 1] = meta.GetArrayItem(schemaNs, propName, i).Value;
}
directory.Set(tagType, array);
break;
}
default:
{
directory.AddError($"Unknown format code {formatCode} for tag {tagType}");
break;
}
}
}
/// <summary>
/// Performs the XMP data extraction.
/// </summary>
/// <remarks>
/// The extraction is done with Adobe's XMPCore library.
/// </remarks>
//public XmpDirectory Extract([NotNull] string xmpString) => Extract(Encoding.UTF8.GetBytes(xmpString));
/// <exception cref="XmpException"/>
private static void ProcessXmpTags(XmpDirectory directory, IXmpMeta xmpMeta)
{
// store the XMPMeta object on the directory in case others wish to use it
directory.SetXmpMeta(xmpMeta);
// read all the tags and send them to the directory
// I've added some popular tags, feel free to add more tags
ProcessXmpTag(xmpMeta, directory, XmpDirectory.TagLensInfo, FormatType.String);
ProcessXmpTag(xmpMeta, directory, XmpDirectory.TagLens, FormatType.String);
ProcessXmpTag(xmpMeta, directory, XmpDirectory.TagCameraSerialNumber, FormatType.String);
ProcessXmpTag(xmpMeta, directory, XmpDirectory.TagFirmware, FormatType.String);
ProcessXmpTag(xmpMeta, directory, XmpDirectory.TagMake, FormatType.String);
ProcessXmpTag(xmpMeta, directory, XmpDirectory.TagModel, FormatType.String);
ProcessXmpTag(xmpMeta, directory, XmpDirectory.TagExposureTime, FormatType.String);
ProcessXmpTag(xmpMeta, directory, XmpDirectory.TagExposureProgram, FormatType.Int);
ProcessXmpTag(xmpMeta, directory, XmpDirectory.TagApertureValue, FormatType.Rational);
ProcessXmpTag(xmpMeta, directory, XmpDirectory.TagFNumber, FormatType.Rational);
ProcessXmpTag(xmpMeta, directory, XmpDirectory.TagFocalLength, FormatType.Rational);
ProcessXmpTag(xmpMeta, directory, XmpDirectory.TagShutterSpeed, FormatType.Rational);
ProcessXmpTag(xmpMeta, directory, XmpDirectory.TagDateTimeOriginal, FormatType.String);
ProcessXmpTag(xmpMeta, directory, XmpDirectory.TagDateTimeDigitized, FormatType.String);
ProcessXmpTag(xmpMeta, directory, XmpDirectory.TagBaseUrl, FormatType.String);
ProcessXmpTag(xmpMeta, directory, XmpDirectory.TagCreateDate, FormatType.String);
ProcessXmpTag(xmpMeta, directory, XmpDirectory.TagCreatorTool, FormatType.String);
ProcessXmpTag(xmpMeta, directory, XmpDirectory.TagIdentifier, FormatType.String);
ProcessXmpTag(xmpMeta, directory, XmpDirectory.TagMetadataDate, FormatType.String);
ProcessXmpTag(xmpMeta, directory, XmpDirectory.TagModifyDate, FormatType.String);
ProcessXmpTag(xmpMeta, directory, XmpDirectory.TagNickname, FormatType.String);
ProcessXmpTag(xmpMeta, directory, XmpDirectory.TagRating, FormatType.Double);
ProcessXmpTag(xmpMeta, directory, XmpDirectory.TagLabel, FormatType.String);
// this requires further research
// processXmpTag(xmpMeta, directory, Schema.DUBLIN_CORE_SPECIFIC_PROPERTIES, "dc:title", XmpDirectory.TAG_TITLE, FMT_STRING);
ProcessXmpTag(xmpMeta, directory, XmpDirectory.TagSubject, FormatType.StringArray);
// processXmpDateTag(xmpMeta, directory, Schema.DUBLIN_CORE_SPECIFIC_PROPERTIES, "dc:date", XmpDirectory.TAG_DATE);
// processXmpTag(xmpMeta, directory, Schema.DUBLIN_CORE_SPECIFIC_PROPERTIES, "dc:type", XmpDirectory.TAG_TYPE, FMT_STRING);
// processXmpTag(xmpMeta, directory, Schema.DUBLIN_CORE_SPECIFIC_PROPERTIES, "dc:description", XmpDirectory.TAG_DESCRIPTION, FMT_STRING);
// processXmpTag(xmpMeta, directory, Schema.DUBLIN_CORE_SPECIFIC_PROPERTIES, "dc:relation", XmpDirectory.TAG_RELATION, FMT_STRING);
// processXmpTag(xmpMeta, directory, Schema.DUBLIN_CORE_SPECIFIC_PROPERTIES, "dc:coverage", XmpDirectory.TAG_COVERAGE, FMT_STRING);
// processXmpTag(xmpMeta, directory, Schema.DUBLIN_CORE_SPECIFIC_PROPERTIES, "dc:creator", XmpDirectory.TAG_CREATOR, FMT_STRING);
// processXmpTag(xmpMeta, directory, Schema.DUBLIN_CORE_SPECIFIC_PROPERTIES, "dc:publisher", XmpDirectory.TAG_PUBLISHER, FMT_STRING);
// processXmpTag(xmpMeta, directory, Schema.DUBLIN_CORE_SPECIFIC_PROPERTIES, "dc:contributor", XmpDirectory.TAG_CONTRIBUTOR, FMT_STRING);
// processXmpTag(xmpMeta, directory, Schema.DUBLIN_CORE_SPECIFIC_PROPERTIES, "dc:rights", XmpDirectory.TAG_RIGHTS, FMT_STRING);
// processXmpTag(xmpMeta, directory, Schema.DUBLIN_CORE_SPECIFIC_PROPERTIES, "dc:format", XmpDirectory.TAG_FORMAT, FMT_STRING);
// processXmpTag(xmpMeta, directory, Schema.DUBLIN_CORE_SPECIFIC_PROPERTIES, "dc:identifier", XmpDirectory.TAG_IDENTIFIER, FMT_STRING);
// processXmpTag(xmpMeta, directory, Schema.DUBLIN_CORE_SPECIFIC_PROPERTIES, "dc:language", XmpDirectory.TAG_LANGUAGE, FMT_STRING);
// processXmpTag(xmpMeta, directory, Schema.DUBLIN_CORE_SPECIFIC_PROPERTIES, "dc:audience", XmpDirectory.TAG_AUDIENCE, FMT_STRING);
// processXmpTag(xmpMeta, directory, Schema.DUBLIN_CORE_SPECIFIC_PROPERTIES, "dc:provenance", XmpDirectory.TAG_PROVENANCE, FMT_STRING);
// processXmpTag(xmpMeta, directory, Schema.DUBLIN_CORE_SPECIFIC_PROPERTIES, "dc:rightsHolder", XmpDirectory.TAG_RIGHTS_HOLDER, FMT_STRING);
// processXmpTag(xmpMeta, directory, Schema.DUBLIN_CORE_SPECIFIC_PROPERTIES, "dc:instructionalMethod", XmpDirectory.TAG_INSTRUCTIONAL_METHOD, FMT_STRING);
// processXmpTag(xmpMeta, directory, Schema.DUBLIN_CORE_SPECIFIC_PROPERTIES, "dc:accrualMethod", XmpDirectory.TAG_ACCRUAL_METHOD, FMT_STRING);
// processXmpTag(xmpMeta, directory, Schema.DUBLIN_CORE_SPECIFIC_PROPERTIES, "dc:accrualPeriodicity", XmpDirectory.TAG_ACCRUAL_PERIODICITY, FMT_STRING);
// processXmpTag(xmpMeta, directory, Schema.DUBLIN_CORE_SPECIFIC_PROPERTIES, "dc:accrualPolicy", XmpDirectory.TAG_ACCRUAL_POLICY, FMT_STRING);
foreach (var prop in xmpMeta.Properties)
{
var path = prop.Path;
var value = prop.Value;
if (path != null && value != null)
directory.AddProperty(path, value);
}
}
/// <summary>
/// Performs the XMP data extraction.
/// </summary>
/// <remarks>
/// The extraction is done with Adobe's XMPCore library.
/// </remarks>
public XmpDirectory Extract([NotNull] byte[] xmpBytes)
{
var directory = new XmpDirectory();
try
{
var xmpMeta = XmpMetaFactory.ParseFromBuffer(xmpBytes);
ProcessXmpTags(directory, xmpMeta);
}
catch (XmpException e)
{
directory.AddError("Error processing XMP data: " + e.Message);
}
return directory;
}
/// <summary>Reads an property value with given namespace URI and property name.</summary>
/// <remarks>Reads an property value with given namespace URI and property name. Add property value to directory if exists</remarks>
/// <exception cref="XmpException"/>
private static void ProcessXmpTag([NotNull] IXmpMeta meta, [NotNull] XmpDirectory directory, int tagType, FormatType formatCode)
{
string schemaNs;
string propName;
if (!XmpDirectory.TagSchemaMap.TryGetValue(tagType, out schemaNs) || !XmpDirectory.TagPropNameMap.TryGetValue(tagType, out propName))
{
return;
}
var property = meta.GetPropertyString(schemaNs, propName);
if (property == null)
{
return;
}
switch (formatCode)
{
case FormatType.Rational:
{
var rationalParts = property.Split(new[] { '/' }, 2);
if (rationalParts.Length == 2)
{
try
{
var rational = new Rational((long)float.Parse(rationalParts[0]), (long)float.Parse(rationalParts[1]));
directory.Set(tagType, rational);
}
catch (FormatException)
{
directory.AddError($"Unable to parse XMP property {propName} as a Rational.");
}
}
else
{
directory.AddError("Error in rational format for tag " + tagType);
}
break;
}
case FormatType.Int:
{
try
{
directory.Set(tagType, int.Parse(property));
}
catch (FormatException)
{
directory.AddError($"Unable to parse XMP property {propName} as an int.");
}
break;
}
case FormatType.Double:
{
try
{
directory.Set(tagType, double.Parse(property));
}
catch (FormatException)
{
directory.AddError($"Unable to parse XMP property {propName} as an double.");
}
break;
}
case FormatType.String:
{
directory.Set(tagType, property);
break;
}
case FormatType.StringArray:
{
//XMP iterators are 1-based
var count = meta.CountArrayItems(schemaNs, propName);
var array = new string[count];
for (var i = 1; i <= count; ++i)
{
array[i - 1] = meta.GetArrayItem(schemaNs, propName, i).Value;
}
directory.Set(tagType, array);
break;
}
default:
{
directory.AddError($"Unknown format code {formatCode} for tag {tagType}");
break;
}
}
}
