public virtual void TestToString()
{
Com.Drew.Metadata.Metadata metadata = new Com.Drew.Metadata.Metadata();
Sharpen.Tests.AreEqual("Metadata (0 directories)", Sharpen.Extensions.ConvertToString(metadata));
metadata.AddDirectory(new ExifIFD0Directory());
Sharpen.Tests.AreEqual("Metadata (1 directory)", Sharpen.Extensions.ConvertToString(metadata));
metadata.AddDirectory(new ExifSubIFDDirectory());
Sharpen.Tests.AreEqual("Metadata (2 directories)", Sharpen.Extensions.ConvertToString(metadata));
}
public virtual void TestToString()
{
Com.Drew.Metadata.Metadata metadata = new Com.Drew.Metadata.Metadata();
Sharpen.Tests.AreEqual("Metadata (0 directories)", Sharpen.Extensions.ConvertToString(metadata));
metadata.AddDirectory(new ExifIFD0Directory());
Sharpen.Tests.AreEqual("Metadata (1 directory)", Sharpen.Extensions.ConvertToString(metadata));
metadata.AddDirectory(new ExifSubIFDDirectory());
Sharpen.Tests.AreEqual("Metadata (2 directories)", Sharpen.Extensions.ConvertToString(metadata));
}
public virtual void Extract(sbyte[] segmentBytes, Com.Drew.Metadata.Metadata metadata, JpegSegmentType segmentType)
{
JpegDirectory directory = new JpegDirectory();
metadata.AddDirectory(directory);
// The value of TAG_COMPRESSION_TYPE is determined by the segment type found
directory.SetInt(JpegDirectory.TagCompressionType, segmentType.byteValue - JpegSegmentType.Sof0.byteValue);
SequentialReader reader = new SequentialByteArrayReader(segmentBytes);
try
{
directory.SetInt(JpegDirectory.TagDataPrecision, reader.GetUInt8());
directory.SetInt(JpegDirectory.TagImageHeight, reader.GetUInt16());
directory.SetInt(JpegDirectory.TagImageWidth, reader.GetUInt16());
short componentCount = reader.GetUInt8();
directory.SetInt(JpegDirectory.TagNumberOfComponents, componentCount);
// for each component, there are three bytes of data:
// 1 - Component ID: 1 = Y, 2 = Cb, 3 = Cr, 4 = I, 5 = Q
// 2 - Sampling factors: bit 0-3 vertical, 4-7 horizontal
// 3 - Quantization table number
for (int i = 0; i < (int)componentCount; i++)
{
int componentId = reader.GetUInt8();
int samplingFactorByte = reader.GetUInt8();
int quantizationTableNumber = reader.GetUInt8();
JpegComponent component = new JpegComponent(componentId, samplingFactorByte, quantizationTableNumber);
directory.SetObject(JpegDirectory.TagComponentData1 + i, component);
}
}
catch (IOException ex)
{
directory.AddError(ex.Message);
}
}
public virtual void TestHasErrors()
{
ExifSubIFDDirectory directory = new ExifSubIFDDirectory();
directory.AddError("Test Error 1");
Com.Drew.Metadata.Metadata metadata = new Com.Drew.Metadata.Metadata();
Sharpen.Tests.IsFalse(metadata.HasErrors());
metadata.AddDirectory(directory);
Sharpen.Tests.IsTrue(metadata.HasErrors());
}
public virtual void ReadJpegSegments([NotNull] Iterable <sbyte[]> segments, [NotNull] Com.Drew.Metadata.Metadata metadata, [NotNull] JpegSegmentType segmentType)
{
foreach (sbyte[] segmentBytes in segments)
{
JpegCommentDirectory directory = new JpegCommentDirectory();
metadata.AddDirectory(directory);
// The entire contents of the directory are the comment
directory.SetString(JpegCommentDirectory.TagComment, Sharpen.Runtime.GetStringForBytes(segmentBytes));
}
}
public virtual void TestHasErrors()
{
ExifSubIFDDirectory directory = new ExifSubIFDDirectory();
directory.AddError("Test Error 1");
Com.Drew.Metadata.Metadata metadata = new Com.Drew.Metadata.Metadata();
Sharpen.Tests.IsFalse(metadata.HasErrors());
metadata.AddDirectory(directory);
Sharpen.Tests.IsTrue(metadata.HasErrors());
}
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 void Extract([NotNull] SequentialReader reader, [NotNull] Com.Drew.Metadata.Metadata metadata)
{
reader.SetMotorolaByteOrder(false);
PcxDirectory directory = new PcxDirectory();
metadata.AddDirectory(directory);
try
{
sbyte identifier = reader.GetInt8();
if (identifier != unchecked ((int)(0x0A)))
{
throw new ImageProcessingException("Invalid PCX identifier byte");
}
directory.SetInt(PcxDirectory.TagVersion, reader.GetInt8());
sbyte encoding = reader.GetInt8();
if (encoding != unchecked ((int)(0x01)))
{
throw new ImageProcessingException("Invalid PCX encoding byte");
}
directory.SetInt(PcxDirectory.TagBitsPerPixel, reader.GetUInt8());
directory.SetInt(PcxDirectory.TagXmin, reader.GetUInt16());
directory.SetInt(PcxDirectory.TagYmin, reader.GetUInt16());
directory.SetInt(PcxDirectory.TagXmax, reader.GetUInt16());
directory.SetInt(PcxDirectory.TagYmax, reader.GetUInt16());
directory.SetInt(PcxDirectory.TagHorizontalDpi, reader.GetUInt16());
directory.SetInt(PcxDirectory.TagVerticalDpi, reader.GetUInt16());
directory.SetByteArray(PcxDirectory.TagPalette, reader.GetBytes(48));
reader.Skip(1);
directory.SetInt(PcxDirectory.TagColorPlanes, reader.GetUInt8());
directory.SetInt(PcxDirectory.TagBytesPerLine, reader.GetUInt16());
int paletteType = reader.GetUInt16();
if (paletteType != 0)
{
directory.SetInt(PcxDirectory.TagPaletteType, paletteType);
}
int hScrSize = reader.GetUInt16();
if (hScrSize != 0)
{
directory.SetInt(PcxDirectory.TagHscrSize, hScrSize);
}
int vScrSize = reader.GetUInt16();
if (vScrSize != 0)
{
directory.SetInt(PcxDirectory.TagVscrSize, vScrSize);
}
}
catch (Exception ex)
{
directory.AddError("Exception reading PCX file metadata: " + ex.Message);
}
}
protected internal DirectoryTiffHandler(Com.Drew.Metadata.Metadata metadata, Type initialDirectoryClass)
{
_metadata = metadata;
try
{
_currentDirectory = (Directory)System.Activator.CreateInstance(initialDirectoryClass);
}
catch (InstantiationException e)
{
throw new RuntimeException(e);
}
catch (MemberAccessException e)
{
throw new RuntimeException(e);
}
_metadata.AddDirectory(_currentDirectory);
}
protected internal DirectoryTiffHandler(Com.Drew.Metadata.Metadata metadata, Type initialDirectoryClass)
{
_metadata = metadata;
try
{
_currentDirectory = (Directory)System.Activator.CreateInstance(initialDirectoryClass);
}
catch (InstantiationException e)
{
throw new RuntimeException(e);
}
catch (MemberAccessException e)
{
throw new RuntimeException(e);
}
_metadata.AddDirectory(_currentDirectory);
}
protected internal virtual void PushDirectory([NotNull] Type directoryClass)
{
_directoryStack.Push(_currentDirectory);
try
{
_currentDirectory = (Directory)System.Activator.CreateInstance(directoryClass);
}
catch (InstantiationException e)
{
throw new RuntimeException(e);
}
catch (MemberAccessException e)
{
throw new RuntimeException(e);
}
_metadata.AddDirectory(_currentDirectory);
}
/// <summary>
/// Performs the XMP data extraction, adding found values to the specified instance of
/// <see cref="Com.Drew.Metadata.Metadata"/>
/// .
/// <p>
/// The extraction is done with Adobe's XMPCore library.
/// </summary>
public virtual void Extract([NotNull] string xmpString, [NotNull] Com.Drew.Metadata.Metadata metadata)
{
XmpDirectory directory = new XmpDirectory();
try
{
XMPMeta xmpMeta = XMPMetaFactory.ParseFromString(xmpString);
ProcessXmpTags(directory, xmpMeta);
}
catch (XMPException e)
{
directory.AddError("Error processing XMP data: " + e.Message);
}
if (!directory.IsEmpty())
{
metadata.AddDirectory(directory);
}
}
/// <exception cref="System.IO.IOException"/>
public virtual void Read([NotNull] FilePath file, [NotNull] Com.Drew.Metadata.Metadata metadata)
{
if (!file.IsFile())
{
throw new IOException("File object must reference a file");
}
if (!file.Exists())
{
throw new IOException("File does not exist");
}
if (!file.CanRead())
{
throw new IOException("File is not readable");
}
FileMetadataDirectory directory = new FileMetadataDirectory();
directory.SetString(FileMetadataDirectory.TagFileName, file.GetName());
directory.SetLong(FileMetadataDirectory.TagFileSize, file.Length());
directory.SetDate(FileMetadataDirectory.TagFileModifiedDate, Sharpen.Extensions.CreateDate(file.LastModified()));
metadata.AddDirectory(directory);
}
public virtual void Extract([NotNull] SequentialReader reader, [NotNull] Com.Drew.Metadata.Metadata metadata)
{
Com.Drew.Metadata.Directory directory = new AdobeJpegDirectory();
metadata.AddDirectory(directory);
try
{
reader.SetMotorolaByteOrder(false);
if (!reader.GetString(Preamble.Length).Equals(Preamble))
{
directory.AddError("Invalid Adobe JPEG data header.");
return;
}
directory.SetInt(AdobeJpegDirectory.TagDctEncodeVersion, reader.GetUInt16());
directory.SetInt(AdobeJpegDirectory.TagApp14Flags0, reader.GetUInt16());
directory.SetInt(AdobeJpegDirectory.TagApp14Flags1, reader.GetUInt16());
directory.SetInt(AdobeJpegDirectory.TagColorTransform, reader.GetInt8());
}
catch (IOException ex)
{
directory.AddError("IO exception processing data: " + ex.Message);
}
}
public virtual void Extract([NotNull] SequentialReader reader, [NotNull] Com.Drew.Metadata.Metadata metadata)
{
PsdHeaderDirectory directory = new PsdHeaderDirectory();
metadata.AddDirectory(directory);
// FILE HEADER SECTION
try
{
int signature = reader.GetInt32();
if (signature != unchecked ((int)(0x38425053)))
{
// "8BPS"
directory.AddError("Invalid PSD file signature");
return;
}
int version = reader.GetUInt16();
if (version != 1 && version != 2)
{
directory.AddError("Invalid PSD file version (must be 1 or 2)");
return;
}
// 6 reserved bytes are skipped here. They should be zero.
reader.Skip(6);
int channelCount = reader.GetUInt16();
directory.SetInt(PsdHeaderDirectory.TagChannelCount, channelCount);
// even though this is probably an unsigned int, the max height in practice is 300,000
int imageHeight = reader.GetInt32();
directory.SetInt(PsdHeaderDirectory.TagImageHeight, imageHeight);
// even though this is probably an unsigned int, the max width in practice is 300,000
int imageWidth = reader.GetInt32();
directory.SetInt(PsdHeaderDirectory.TagImageWidth, imageWidth);
int bitsPerChannel = reader.GetUInt16();
directory.SetInt(PsdHeaderDirectory.TagBitsPerChannel, bitsPerChannel);
int colorMode = reader.GetUInt16();
directory.SetInt(PsdHeaderDirectory.TagColorMode, colorMode);
}
catch (IOException)
{
directory.AddError("Unable to read PSD header");
return;
}
// COLOR MODE DATA SECTION
try
{
long sectionLength = reader.GetUInt32();
/*
* Only indexed color and duotone (see the mode field in the File header section) have color mode data.
* For all other modes, this section is just the 4-byte length field, which is set to zero.
*
* Indexed color images: length is 768; color data contains the color table for the image,
* in non-interleaved order.
* Duotone images: color data contains the duotone specification (the format of which is not documented).
* Other applications that read Photoshop files can treat a duotone image as a gray image,
* and just preserve the contents of the duotone information when reading and writing the
* file.
*/
reader.Skip(sectionLength);
}
catch (IOException)
{
return;
}
// IMAGE RESOURCES SECTION
try
{
long sectionLength = reader.GetUInt32();
System.Diagnostics.Debug.Assert((sectionLength <= int.MaxValue));
new PhotoshopReader().Extract(reader, (int)sectionLength, metadata);
}
catch (IOException)
{
}
}
/// <summary>
/// Performs the IPTC data extraction, adding found values to the specified instance of
/// <see cref="Com.Drew.Metadata.Metadata"/>
/// .
/// </summary>
public virtual void Extract([NotNull] SequentialReader reader, [NotNull] Com.Drew.Metadata.Metadata metadata, long length)
{
IptcDirectory directory = new IptcDirectory();
metadata.AddDirectory(directory);
int offset = 0;
// for each tag
while (offset < length)
{
// identifies start of a tag
short startByte;
try
{
startByte = reader.GetUInt8();
offset++;
}
catch (IOException)
{
directory.AddError("Unable to read starting byte of IPTC tag");
return;
}
if (startByte != unchecked ((int)(0x1c)))
{
// NOTE have seen images where there was one extra byte at the end, giving
// offset==length at this point, which is not worth logging as an error.
if (offset != length)
{
directory.AddError("Invalid IPTC tag marker at offset " + (offset - 1) + ". Expected '0x1c' but got '0x" + Sharpen.Extensions.ToHexString(startByte) + "'.");
}
return;
}
// we need at least five bytes left to read a tag
if (offset + 5 >= length)
{
directory.AddError("Too few bytes remain for a valid IPTC tag");
return;
}
int directoryType;
int tagType;
int tagByteCount;
try
{
directoryType = reader.GetUInt8();
tagType = reader.GetUInt8();
// TODO support Extended DataSet Tag (see 1.5(c), p14, IPTC-IIMV4.2.pdf)
tagByteCount = reader.GetUInt16();
offset += 4;
}
catch (IOException)
{
directory.AddError("IPTC data segment ended mid-way through tag descriptor");
return;
}
if (offset + tagByteCount > length)
{
directory.AddError("Data for tag extends beyond end of IPTC segment");
return;
}
try
{
ProcessTag(reader, directory, directoryType, tagType, tagByteCount);
}
catch (IOException)
{
directory.AddError("Error processing IPTC tag");
return;
}
offset += tagByteCount;
}
}
public virtual void Extract([NotNull] SequentialReader reader, [NotNull] Com.Drew.Metadata.Metadata metadata)
{
BmpHeaderDirectory directory = new BmpHeaderDirectory();
metadata.AddDirectory(directory);
// FILE HEADER
//
// 2 - magic number (0x42 0x4D = "BM")
// 4 - size of BMP file in bytes
// 2 - reserved
// 2 - reserved
// 4 - the offset of the pixel array
//
// BITMAP INFORMATION HEADER
//
// The first four bytes of the header give the size, which is a discriminator of the actual header format.
// See this for more information http://en.wikipedia.org/wiki/BMP_file_format
//
// BITMAPINFOHEADER (size = 40)
//
// 4 - size of header
// 4 - pixel width (signed)
// 4 - pixel height (signed)
// 2 - number of colour planes (must be set to 1)
// 2 - number of bits per pixel
// 4 - compression being used (needs decoding)
// 4 - pixel data length (not total file size, just pixel array)
// 4 - horizontal resolution, pixels/meter (signed)
// 4 - vertical resolution, pixels/meter (signed)
// 4 - number of colours in the palette (0 means no palette)
// 4 - number of important colours (generally ignored)
//
// BITMAPCOREHEADER (size = 12)
//
// 4 - size of header
// 2 - pixel width
// 2 - pixel height
// 2 - number of colour planes (must be set to 1)
// 2 - number of bits per pixel
//
// COMPRESSION VALUES
//
// 0 = None
// 1 = RLE 8-bit/pixel
// 2 = RLE 4-bit/pixel
// 3 = Bit field (or Huffman 1D if BITMAPCOREHEADER2 (size 64))
// 4 = JPEG (or RLE-24 if BITMAPCOREHEADER2 (size 64))
// 5 = PNG
// 6 = Bit field
reader.SetMotorolaByteOrder(false);
try
{
int magicNumber = reader.GetUInt16();
if (magicNumber != unchecked ((int)(0x4D42)))
{
directory.AddError("Invalid BMP magic number");
return;
}
// skip past the rest of the file header
reader.Skip(4 + 2 + 2 + 4);
int headerSize = reader.GetInt32();
directory.SetInt(BmpHeaderDirectory.TagHeaderSize, headerSize);
// We expect the header size to be either 40 (BITMAPINFOHEADER) or 12 (BITMAPCOREHEADER)
if (headerSize == 40)
{
// BITMAPINFOHEADER
directory.SetInt(BmpHeaderDirectory.TagImageWidth, reader.GetInt32());
directory.SetInt(BmpHeaderDirectory.TagImageHeight, reader.GetInt32());
directory.SetInt(BmpHeaderDirectory.TagColourPlanes, reader.GetInt16());
directory.SetInt(BmpHeaderDirectory.TagBitsPerPixel, reader.GetInt16());
directory.SetInt(BmpHeaderDirectory.TagCompression, reader.GetInt32());
// skip the pixel data length
reader.Skip(4);
directory.SetInt(BmpHeaderDirectory.TagXPixelsPerMeter, reader.GetInt32());
directory.SetInt(BmpHeaderDirectory.TagYPixelsPerMeter, reader.GetInt32());
directory.SetInt(BmpHeaderDirectory.TagPaletteColourCount, reader.GetInt32());
directory.SetInt(BmpHeaderDirectory.TagImportantColourCount, reader.GetInt32());
}
else
{
if (headerSize == 12)
{
directory.SetInt(BmpHeaderDirectory.TagImageWidth, reader.GetInt16());
directory.SetInt(BmpHeaderDirectory.TagImageHeight, reader.GetInt16());
directory.SetInt(BmpHeaderDirectory.TagColourPlanes, reader.GetInt16());
directory.SetInt(BmpHeaderDirectory.TagBitsPerPixel, reader.GetInt16());
}
else
{
directory.AddError("Unexpected DIB header size: " + headerSize);
}
}
}
catch (IOException)
{
directory.AddError("Unable to read BMP header");
}
}
public virtual void Extract([NotNull] SequentialReader reader, [NotNull] Com.Drew.Metadata.Metadata metadata)
{
GifHeaderDirectory directory = new GifHeaderDirectory();
metadata.AddDirectory(directory);
// FILE HEADER
//
// 3 - signature: "GIF"
// 3 - version: either "87a" or "89a"
//
// LOGICAL SCREEN DESCRIPTOR
//
// 2 - pixel width
// 2 - pixel height
// 1 - screen and color map information flags (0 is LSB)
// 0-2 Size of the global color table
// 3 Color table sort flag (89a only)
// 4-6 Color resolution
// 7 Global color table flag
// 1 - background color index
// 1 - pixel aspect ratio
reader.SetMotorolaByteOrder(false);
try
{
string signature = reader.GetString(3);
if (!signature.Equals("GIF"))
{
directory.AddError("Invalid GIF file signature");
return;
}
string version = reader.GetString(3);
if (!version.Equals(Gif87aVersionIdentifier) && !version.Equals(Gif89aVersionIdentifier))
{
directory.AddError("Unexpected GIF version");
return;
}
directory.SetString(GifHeaderDirectory.TagGifFormatVersion, version);
directory.SetInt(GifHeaderDirectory.TagImageWidth, reader.GetUInt16());
directory.SetInt(GifHeaderDirectory.TagImageHeight, reader.GetUInt16());
short flags = reader.GetUInt8();
// First three bits = (BPP - 1)
int colorTableSize = 1 << ((flags & 7) + 1);
directory.SetInt(GifHeaderDirectory.TagColorTableSize, colorTableSize);
if (version.Equals(Gif89aVersionIdentifier))
{
bool isColorTableSorted = (flags & 8) != 0;
directory.SetBoolean(GifHeaderDirectory.TagIsColorTableSorted, isColorTableSorted);
}
int bitsPerPixel = ((flags & unchecked ((int)(0x70))) >> 4) + 1;
directory.SetInt(GifHeaderDirectory.TagBitsPerPixel, bitsPerPixel);
bool hasGlobalColorTable = (flags & unchecked ((int)(0xf))) != 0;
directory.SetBoolean(GifHeaderDirectory.TagHasGlobalColorTable, hasGlobalColorTable);
directory.SetInt(GifHeaderDirectory.TagTransparentColorIndex, reader.GetUInt8());
int aspectRatioByte = reader.GetUInt8();
if (aspectRatioByte != 0)
{
float pixelAspectRatio = (float)((aspectRatioByte + 15d) / 64d);
directory.SetFloat(GifHeaderDirectory.TagPixelAspectRatio, pixelAspectRatio);
}
}
catch (IOException)
{
directory.AddError("Unable to read BMP header");
}
}
public virtual void Extract([NotNull] SequentialReader reader, int length, [NotNull] Com.Drew.Metadata.Metadata metadata)
{
PhotoshopDirectory directory = new PhotoshopDirectory();
metadata.AddDirectory(directory);
// Data contains a sequence of Image Resource Blocks (IRBs):
//
// 4 bytes - Signature "8BIM"
// 2 bytes - Resource identifier
// String - Pascal string, padded to make length even
// 4 bytes - Size of resource data which follows
// Data - The resource data, padded to make size even
//
// http://www.adobe.com/devnet-apps/photoshop/fileformatashtml/#50577409_pgfId-1037504
int pos = 0;
while (pos < length)
{
try
{
// 4 bytes for the signature. Should always be "8BIM".
string signature = reader.GetString(4);
if (!signature.Equals("8BIM"))
{
throw new ImageProcessingException("Expecting 8BIM marker");
}
pos += 4;
// 2 bytes for the resource identifier (tag type).
int tagType = reader.GetUInt16();
// segment type
pos += 2;
// A variable number of bytes holding a pascal string (two leading bytes for length).
short descriptionLength = reader.GetUInt8();
pos += 1;
// Some basic bounds checking
if (descriptionLength < 0 || descriptionLength + pos > length)
{
throw new ImageProcessingException("Invalid string length");
}
// We don't use the string value here
reader.Skip(descriptionLength);
pos += descriptionLength;
// The number of bytes is padded with a trailing zero, if needed, to make the size even.
if (pos % 2 != 0)
{
reader.Skip(1);
pos++;
}
// 4 bytes for the size of the resource data that follows.
int byteCount = reader.GetInt32();
pos += 4;
// The resource data.
sbyte[] tagBytes = reader.GetBytes(byteCount);
pos += byteCount;
// The number of bytes is padded with a trailing zero, if needed, to make the size even.
if (pos % 2 != 0)
{
reader.Skip(1);
pos++;
}
if (tagType == PhotoshopDirectory.TagIptc)
{
new IptcReader().Extract(new SequentialByteArrayReader(tagBytes), metadata, tagBytes.Length);
}
else
{
if (tagType == PhotoshopDirectory.TagIccProfileBytes)
{
new IccReader().Extract(new ByteArrayReader(tagBytes), metadata);
}
else
{
if (tagType == PhotoshopDirectory.TagExifData1 || tagType == PhotoshopDirectory.TagExifData3)
{
new ExifReader().Extract(new ByteArrayReader(tagBytes), metadata);
}
else
{
if (tagType == PhotoshopDirectory.TagXmpData)
{
new XmpReader().Extract(tagBytes, metadata);
}
else
{
directory.SetByteArray(tagType, tagBytes);
}
}
}
}
if (tagType >= unchecked ((int)(0x0fa0)) && tagType <= unchecked ((int)(0x1387)))
{
PhotoshopDirectory._tagNameMap.Put(tagType, Sharpen.Extensions.StringFormat("Plug-in %d Data", tagType - unchecked ((int)(0x0fa0)) + 1));
}
}
catch (Exception ex)
{
directory.AddError(ex.Message);
return;
}
}
}
/// <exception cref="Com.Drew.Imaging.Png.PngProcessingException"/>
/// <exception cref="System.IO.IOException"/>
private static void ProcessChunk([NotNull] Com.Drew.Metadata.Metadata metadata, [NotNull] PngChunk chunk)
{
PngChunkType chunkType = chunk.GetChunkType();
sbyte[] bytes = chunk.GetBytes();
if (chunkType.Equals(PngChunkType.Ihdr))
{
PngHeader header = new PngHeader(bytes);
PngDirectory directory = new PngDirectory(PngChunkType.Ihdr);
directory.SetInt(PngDirectory.TagImageWidth, header.GetImageWidth());
directory.SetInt(PngDirectory.TagImageHeight, header.GetImageHeight());
directory.SetInt(PngDirectory.TagBitsPerSample, header.GetBitsPerSample());
directory.SetInt(PngDirectory.TagColorType, header.GetColorType().GetNumericValue());
directory.SetInt(PngDirectory.TagCompressionType, header.GetCompressionType());
directory.SetInt(PngDirectory.TagFilterMethod, header.GetFilterMethod());
directory.SetInt(PngDirectory.TagInterlaceMethod, header.GetInterlaceMethod());
metadata.AddDirectory(directory);
}
else
{
if (chunkType.Equals(PngChunkType.Plte))
{
PngDirectory directory = new PngDirectory(PngChunkType.Plte);
directory.SetInt(PngDirectory.TagPaletteSize, bytes.Length / 3);
metadata.AddDirectory(directory);
}
else
{
if (chunkType.Equals(PngChunkType.tRNS))
{
PngDirectory directory = new PngDirectory(PngChunkType.tRNS);
directory.SetInt(PngDirectory.TagPaletteHasTransparency, 1);
metadata.AddDirectory(directory);
}
else
{
if (chunkType.Equals(PngChunkType.sRGB))
{
int srgbRenderingIntent = new SequentialByteArrayReader(bytes).GetInt8();
PngDirectory directory = new PngDirectory(PngChunkType.sRGB);
directory.SetInt(PngDirectory.TagSrgbRenderingIntent, srgbRenderingIntent);
metadata.AddDirectory(directory);
}
else
{
if (chunkType.Equals(PngChunkType.cHRM))
{
PngChromaticities chromaticities = new PngChromaticities(bytes);
PngChromaticitiesDirectory directory = new PngChromaticitiesDirectory();
directory.SetInt(PngChromaticitiesDirectory.TagWhitePointX, chromaticities.GetWhitePointX());
directory.SetInt(PngChromaticitiesDirectory.TagWhitePointX, chromaticities.GetWhitePointX());
directory.SetInt(PngChromaticitiesDirectory.TagRedX, chromaticities.GetRedX());
directory.SetInt(PngChromaticitiesDirectory.TagRedY, chromaticities.GetRedY());
directory.SetInt(PngChromaticitiesDirectory.TagGreenX, chromaticities.GetGreenX());
directory.SetInt(PngChromaticitiesDirectory.TagGreenY, chromaticities.GetGreenY());
directory.SetInt(PngChromaticitiesDirectory.TagBlueX, chromaticities.GetBlueX());
directory.SetInt(PngChromaticitiesDirectory.TagBlueY, chromaticities.GetBlueY());
metadata.AddDirectory(directory);
}
else
{
if (chunkType.Equals(PngChunkType.gAMA))
{
int gammaInt = new SequentialByteArrayReader(bytes).GetInt32();
PngDirectory directory = new PngDirectory(PngChunkType.gAMA);
directory.SetDouble(PngDirectory.TagGamma, gammaInt / 100000.0);
metadata.AddDirectory(directory);
}
else
{
if (chunkType.Equals(PngChunkType.iCCP))
{
SequentialReader reader = new SequentialByteArrayReader(bytes);
string profileName = reader.GetNullTerminatedString(79);
PngDirectory directory = new PngDirectory(PngChunkType.iCCP);
directory.SetString(PngDirectory.TagIccProfileName, profileName);
sbyte compressionMethod = reader.GetInt8();
if (compressionMethod == 0)
{
// Only compression method allowed by the spec is zero: deflate
// This assumes 1-byte-per-char, which it is by spec.
int bytesLeft = bytes.Length - profileName.Length - 2;
sbyte[] compressedProfile = reader.GetBytes(bytesLeft);
InflaterInputStream inflateStream = new InflaterInputStream(new ByteArrayInputStream(compressedProfile));
new IccReader().Extract(new RandomAccessStreamReader(inflateStream), metadata);
inflateStream.Close();
}
metadata.AddDirectory(directory);
}
else
{
if (chunkType.Equals(PngChunkType.bKGD))
{
PngDirectory directory = new PngDirectory(PngChunkType.bKGD);
directory.SetByteArray(PngDirectory.TagBackgroundColor, bytes);
metadata.AddDirectory(directory);
}
else
{
if (chunkType.Equals(PngChunkType.tEXt))
{
SequentialReader reader = new SequentialByteArrayReader(bytes);
string keyword = reader.GetNullTerminatedString(79);
int bytesLeft = bytes.Length - keyword.Length - 1;
string value = reader.GetNullTerminatedString(bytesLeft);
IList <KeyValuePair> textPairs = new AList <KeyValuePair>();
textPairs.Add(new KeyValuePair(keyword, value));
PngDirectory directory = new PngDirectory(PngChunkType.iTXt);
directory.SetObject(PngDirectory.TagTextualData, textPairs);
metadata.AddDirectory(directory);
}
else
{
if (chunkType.Equals(PngChunkType.iTXt))
{
SequentialReader reader = new SequentialByteArrayReader(bytes);
string keyword = reader.GetNullTerminatedString(79);
sbyte compressionFlag = reader.GetInt8();
sbyte compressionMethod = reader.GetInt8();
string languageTag = reader.GetNullTerminatedString(bytes.Length);
string translatedKeyword = reader.GetNullTerminatedString(bytes.Length);
int bytesLeft = bytes.Length - keyword.Length - 1 - 1 - 1 - languageTag.Length - 1 - translatedKeyword.Length - 1;
string text = null;
if (compressionFlag == 0)
{
text = reader.GetNullTerminatedString(bytesLeft);
}
else
{
if (compressionFlag == 1)
{
if (compressionMethod == 0)
{
text = StringUtil.FromStream(new InflaterInputStream(new ByteArrayInputStream(bytes, bytes.Length - bytesLeft, bytesLeft)));
}
else
{
PngDirectory directory = new PngDirectory(PngChunkType.iTXt);
directory.AddError("Invalid compression method value");
metadata.AddDirectory(directory);
}
}
else
{
PngDirectory directory = new PngDirectory(PngChunkType.iTXt);
directory.AddError("Invalid compression flag value");
metadata.AddDirectory(directory);
}
}
if (text != null)
{
if (keyword.Equals("XML:com.adobe.xmp"))
{
// NOTE in testing images, the XMP has parsed successfully, but we are not extracting tags from it as necessary
new XmpReader().Extract(text, metadata);
}
else
{
IList <KeyValuePair> textPairs = new AList <KeyValuePair>();
textPairs.Add(new KeyValuePair(keyword, text));
PngDirectory directory = new PngDirectory(PngChunkType.iTXt);
directory.SetObject(PngDirectory.TagTextualData, textPairs);
metadata.AddDirectory(directory);
}
}
}
else
{
if (chunkType.Equals(PngChunkType.tIME))
{
SequentialByteArrayReader reader = new SequentialByteArrayReader(bytes);
int year = reader.GetUInt16();
int month = reader.GetUInt8() - 1;
int day = reader.GetUInt8();
int hour = reader.GetUInt8();
int minute = reader.GetUInt8();
int second = reader.GetUInt8();
Sharpen.Calendar calendar = Sharpen.Calendar.GetInstance(Sharpen.Extensions.GetTimeZone("UTC"));
//noinspection MagicConstant
calendar.Set(year, month, day, hour, minute, second);
PngDirectory directory = new PngDirectory(PngChunkType.tIME);
directory.SetDate(PngDirectory.TagLastModificationTime, calendar.GetTime());
metadata.AddDirectory(directory);
}
else
{
if (chunkType.Equals(PngChunkType.pHYs))
{
SequentialByteArrayReader reader = new SequentialByteArrayReader(bytes);
int pixelsPerUnitX = reader.GetInt32();
int pixelsPerUnitY = reader.GetInt32();
sbyte unitSpecifier = reader.GetInt8();
PngDirectory directory = new PngDirectory(PngChunkType.pHYs);
directory.SetInt(PngDirectory.TagPixelsPerUnitX, pixelsPerUnitX);
directory.SetInt(PngDirectory.TagPixelsPerUnitY, pixelsPerUnitY);
directory.SetInt(PngDirectory.TagUnitSpecifier, unitSpecifier);
metadata.AddDirectory(directory);
}
else
{
if (chunkType.Equals(PngChunkType.sBIT))
{
PngDirectory directory = new PngDirectory(PngChunkType.sBIT);
directory.SetByteArray(PngDirectory.TagSignificantBits, bytes);
metadata.AddDirectory(directory);
}
}
}
}
}
}
}
}
}
}
}
}
}
}
public virtual void Extract([NotNull] SequentialReader reader, [NotNull] Com.Drew.Metadata.Metadata metadata)
{
reader.SetMotorolaByteOrder(false);
int type;
int imageCount;
// Read header (ICONDIR structure)
try
{
int reserved = reader.GetUInt16();
if (reserved != 0)
{
IcoDirectory directory = new IcoDirectory();
directory.AddError("Invalid header bytes");
metadata.AddDirectory(directory);
return;
}
type = reader.GetUInt16();
if (type != 1 && type != 2)
{
IcoDirectory directory = new IcoDirectory();
directory.AddError("Invalid type " + type + " -- expecting 1 or 2");
metadata.AddDirectory(directory);
return;
}
imageCount = reader.GetUInt16();
if (imageCount == 0)
{
IcoDirectory directory = new IcoDirectory();
directory.AddError("Image count cannot be zero");
metadata.AddDirectory(directory);
return;
}
}
catch (IOException ex)
{
IcoDirectory directory = new IcoDirectory();
directory.AddError("Exception reading ICO file metadata: " + ex.Message);
metadata.AddDirectory(directory);
return;
}
// Read each embedded image
IcoDirectory directory_1 = null;
try
{
for (int imageIndex = 0; imageIndex < imageCount; imageIndex++)
{
directory_1 = new IcoDirectory();
metadata.AddDirectory(directory_1);
directory_1.SetInt(IcoDirectory.TagImageType, type);
directory_1.SetInt(IcoDirectory.TagImageWidth, reader.GetUInt8());
directory_1.SetInt(IcoDirectory.TagImageHeight, reader.GetUInt8());
directory_1.SetInt(IcoDirectory.TagColourPaletteSize, reader.GetUInt8());
// Ignore this byte (normally zero, though .NET's System.Drawing.Icon.Save method writes 255)
reader.GetUInt8();
if (type == 1)
{
// Icon
directory_1.SetInt(IcoDirectory.TagColourPlanes, reader.GetUInt16());
directory_1.SetInt(IcoDirectory.TagBitsPerPixel, reader.GetUInt16());
}
else
{
// Cursor
directory_1.SetInt(IcoDirectory.TagCursorHotspotX, reader.GetUInt16());
directory_1.SetInt(IcoDirectory.TagCursorHotspotY, reader.GetUInt16());
}
directory_1.SetLong(IcoDirectory.TagImageSizeBytes, reader.GetUInt32());
directory_1.SetLong(IcoDirectory.TagImageOffsetBytes, reader.GetUInt32());
}
}
catch (IOException ex)
{
System.Diagnostics.Debug.Assert((directory_1 != null));
directory_1.AddError("Exception reading ICO file metadata: " + ex.Message);
}
}