/// <summary>
/// Extracts aMetadata from a SegmentReader
/// </summary>
/// <param name="aSegmentReader">where to extract aMetadata</param>
/// <returns>the aMetadata found</returns>
private static Metadata ExtractJpegSegmentReaderMetadata(JpegSegmentReader aSegmentReader)
{
Metadata lcMetadata = new Metadata();
try
{
byte[] lcExifSegment =
aSegmentReader.ReadSegment(JpegSegmentReader.SEGMENT_APP1);
new ExifReader(lcExifSegment).Extract(lcMetadata);
}
catch (Exception e)
{
Trace.TraceWarning("Error in reading Exif segment (" + e.Message + ")");
// in the interests of catching as much data as possible, continue
}
try
{
byte[] lcIptcSegment =
aSegmentReader.ReadSegment(JpegSegmentReader.SEGMENT_APPD);
new IptcReader(lcIptcSegment).Extract(lcMetadata);
}
catch (Exception e)
{
Trace.TraceWarning("Error in reading Iptc segment (" + e.Message + ")");
}
try
{
byte[] lcJpegSegment =
aSegmentReader.ReadSegment(JpegSegmentReader.SEGMENT_SOF0);
new JpegReader(lcJpegSegment).Extract(lcMetadata);
}
catch (Exception e)
{
Trace.TraceWarning("Error in reading Jpeg segment (" + e.Message + ")");
}
try
{
byte[] lcJpegCommentSegment =
aSegmentReader.ReadSegment(JpegSegmentReader.SEGMENT_COM);
new JpegCommentReader(lcJpegCommentSegment).Extract(lcMetadata);
}
catch (Exception e)
{
Trace.TraceWarning("Error in reading Jpeg Comment segment (" + e.Message + ")");
}
return(lcMetadata);
}
/// <summary>
/// Extracts aMetadata from a SegmentReader
/// </summary>
/// <param name="aSegmentReader">where to extract aMetadata</param>
/// <returns>the aMetadata found</returns>
private static Metadata ExtractJpegSegmentReaderMetadata(JpegSegmentReader aSegmentReader)
{
Metadata lcMetadata = new Metadata();
try
{
byte[] lcExifSegment =
aSegmentReader.ReadSegment(JpegSegmentReader.SEGMENT_APP1);
new ExifReader(lcExifSegment).Extract(lcMetadata);
}
catch (Exception e)
{
Trace.TraceWarning("Error in reading Exif segment ("+e.Message+")");
// in the interests of catching as much data as possible, continue
}
try
{
byte[] lcIptcSegment =
aSegmentReader.ReadSegment(JpegSegmentReader.SEGMENT_APPD);
new IptcReader(lcIptcSegment).Extract(lcMetadata);
}
catch (Exception e)
{
Trace.TraceWarning("Error in reading Iptc segment (" + e.Message + ")");
}
try
{
byte[] lcJpegSegment =
aSegmentReader.ReadSegment(JpegSegmentReader.SEGMENT_SOF0);
new JpegReader(lcJpegSegment).Extract(lcMetadata);
}
catch (Exception e)
{
Trace.TraceWarning("Error in reading Jpeg segment (" + e.Message + ")");
}
try
{
byte[] lcJpegCommentSegment =
aSegmentReader.ReadSegment(JpegSegmentReader.SEGMENT_COM);
new JpegCommentReader(lcJpegCommentSegment).Extract(lcMetadata);
}
catch (Exception e)
{
Trace.TraceWarning("Error in reading Jpeg Comment segment (" + e.Message + ")");
}
return lcMetadata;
}
/// <summary>
/// Reads MetaData from a aFile
/// </summary>
/// <param name="aFile">where to read information</param>
/// <returns>the aMetadata object</returns>
public static Metadata ReadMetadata(FileInfo aFile)
{
JpegSegmentReader lcSegmentReader = null;
Metadata lcMetadata = null;
try
{
lcSegmentReader = new JpegSegmentReader(aFile);
lcMetadata = JpegMetadataReader.ExtractJpegSegmentReaderMetadata(lcSegmentReader);
}
finally
{
if (lcSegmentReader != null)
{
// Dispose will call close for this class
lcSegmentReader.Dispose();
}
}
return(lcMetadata);
}
/// <summary>
/// Reads MetaData from a aFile
/// </summary>
/// <param name="aFile">where to read information</param>
/// <returns>the aMetadata object</returns>
public static Metadata ReadMetadata(FileInfo aFile)
{
JpegSegmentReader lcSegmentReader = null;
Metadata lcMetadata = null;
try
{
lcSegmentReader = new JpegSegmentReader(aFile);
lcMetadata = JpegMetadataReader.ExtractJpegSegmentReaderMetadata(lcSegmentReader);
}
finally
{
if (lcSegmentReader != null)
{
// Dispose will call close for this class
lcSegmentReader.Dispose();
}
}
return lcMetadata;
}
