public virtual void Extract(sbyte[] segmentBytes, Com.Drew.Metadata.Metadata metadata, JpegSegmentType segmentType)
{
if (segmentBytes == null)
{
throw new ArgumentNullException("segmentBytes cannot be null");
}
if (metadata == null)
{
throw new ArgumentNullException("metadata cannot be null");
}
if (segmentType == null)
{
throw new ArgumentNullException("segmentType cannot be null");
}
try
{
ByteArrayReader reader = new ByteArrayReader(segmentBytes);
//
// Check for the header preamble
//
try
{
if (!reader.GetString(0, JpegExifSegmentPreamble.Length).Equals(JpegExifSegmentPreamble))
{
// TODO what do to with this error state?
System.Console.Error.Println("Invalid JPEG Exif segment preamble");
return;
}
}
catch (IOException e)
{
// TODO what do to with this error state?
Sharpen.Runtime.PrintStackTrace(e, System.Console.Error);
return;
}
//
// Read the TIFF-formatted Exif data
//
new TiffReader().ProcessTiff(reader, new ExifTiffHandler(metadata, _storeThumbnailBytes), JpegExifSegmentPreamble.Length);
}
catch (TiffProcessingException e)
{
// TODO what do to with this error state?
Sharpen.Runtime.PrintStackTrace(e, System.Console.Error);
}
catch (IOException e)
{
// TODO what do to with this error state?
Sharpen.Runtime.PrintStackTrace(e, System.Console.Error);
}
}
public virtual void ProcessChunk([NotNull] string fourCC, [NotNull] sbyte[] payload)
{
// System.out.println("Chunk " + fourCC + " " + payload.length + " bytes");
if (fourCC.Equals("EXIF"))
{
new ExifReader().Extract(new ByteArrayReader(payload), _metadata);
}
else
{
if (fourCC.Equals("ICCP"))
{
new IccReader().Extract(new ByteArrayReader(payload), _metadata);
}
else
{
if (fourCC.Equals("XMP "))
{
new XmpReader().Extract(payload, _metadata);
}
else
{
if (fourCC.Equals("VP8X") && payload.Length == 10)
{
RandomAccessReader reader = new ByteArrayReader(payload);
reader.SetMotorolaByteOrder(false);
try
{
// Flags
// boolean hasFragments = reader.getBit(0);
bool isAnimation = reader.GetBit(1);
// boolean hasXmp = reader.getBit(2);
// boolean hasExif = reader.getBit(3);
bool hasAlpha = reader.GetBit(4);
// boolean hasIcc = reader.getBit(5);
// Image size
int widthMinusOne = reader.GetInt24(4);
int heightMinusOne = reader.GetInt24(7);
WebpDirectory directory = new WebpDirectory();
directory.SetInt(WebpDirectory.TagImageWidth, widthMinusOne + 1);
directory.SetInt(WebpDirectory.TagImageHeight, heightMinusOne + 1);
directory.SetBoolean(WebpDirectory.TagHasAlpha, hasAlpha);
directory.SetBoolean(WebpDirectory.TagIsAnimation, isAnimation);
_metadata.AddDirectory(directory);
}
catch (IOException e)
{
Sharpen.Runtime.PrintStackTrace(e, System.Console.Error);
}
}
}
}
}
}
public virtual Face[] GetDetectedFaces()
{
sbyte[] bytes = GetByteArray(TagFaceDetectionInfo);
if (bytes == null)
{
return null;
}
RandomAccessReader reader = new ByteArrayReader(bytes);
reader.SetMotorolaByteOrder(false);
try
{
int faceCount = reader.GetUInt16(0);
if (faceCount == 0)
{
return null;
}
Face[] faces = new Face[faceCount];
for (int i = 0; i < faceCount; i++)
{
int offset = 2 + i * 8;
faces[i] = new Face(reader.GetUInt16(offset), reader.GetUInt16(offset + 2), reader.GetUInt16(offset + 4), reader.GetUInt16(offset + 6), null, null);
}
return faces;
}
catch (IOException)
{
return null;
}
}
public virtual Face[] GetRecognizedFaces()
{
sbyte[] bytes = GetByteArray(TagFaceRecognitionInfo);
if (bytes == null)
{
return null;
}
RandomAccessReader reader = new ByteArrayReader(bytes);
reader.SetMotorolaByteOrder(false);
try
{
int faceCount = reader.GetUInt16(0);
if (faceCount == 0)
{
return null;
}
Face[] faces = new Face[faceCount];
for (int i = 0; i < faceCount; i++)
{
int offset = 4 + i * 44;
string name = Sharpen.Extensions.Trim(reader.GetString(offset, 20, "ASCII"));
string age = Sharpen.Extensions.Trim(reader.GetString(offset + 28, 20, "ASCII"));
faces[i] = new Face(reader.GetUInt16(offset + 20), reader.GetUInt16(offset + 22), reader.GetUInt16(offset + 24), reader.GetUInt16(offset + 26), name, Age.FromPanasonicString(age));
}
return faces;
}
catch (IOException)
{
return null;
}
}
/// <summary>Version specifically for dealing with XMP found in JPEG segments.</summary>
/// <remarks>
/// Version specifically for dealing with XMP found in JPEG segments. This form of XMP has a peculiar preamble, which
/// must be removed before parsing the XML.
/// </remarks>
/// <param name="segmentBytes">The byte array from which the metadata should be extracted.</param>
/// <param name="metadata">
/// The
/// <see cref="Com.Drew.Metadata.Metadata"/>
/// object into which extracted values should be merged.
/// </param>
/// <param name="segmentType">
/// The
/// <see cref="Com.Drew.Imaging.Jpeg.JpegSegmentType"/>
/// being read.
/// </param>
public virtual void Extract(sbyte[] segmentBytes, Com.Drew.Metadata.Metadata metadata, JpegSegmentType segmentType)
{
XmpDirectory directory = metadata.GetOrCreateDirectory<XmpDirectory>();
// XMP in a JPEG file has a 29 byte preamble which is not valid XML.
int preambleLength = 29;
// check for the header length
if (segmentBytes.Length <= preambleLength + 1)
{
directory.AddError(Sharpen.Extensions.StringFormat("Xmp data segment must contain at least %d bytes", preambleLength + 1));
return;
}
ByteArrayReader reader = new ByteArrayReader(segmentBytes);
string preamble = Sharpen.Runtime.GetStringForBytes(segmentBytes, 0, preambleLength);
if (!"http://ns.adobe.com/xap/1.0/\x0".Equals(preamble))
{
directory.AddError("XMP data segment doesn't begin with 'http://ns.adobe.com/xap/1.0/'");
return;
}
sbyte[] xmlBytes = new sbyte[segmentBytes.Length - preambleLength];
System.Array.Copy(segmentBytes, 29, xmlBytes, 0, xmlBytes.Length);
Extract(xmlBytes, metadata);
}