/// <summary>Reads JFIF values and returns them in an <see cref="JfifDirectory"/>.</summary>
public JfifDirectory Extract(IndexedReader reader)
{
var directory = new JfifDirectory();
try
{
// For JFIF the tag number is the value's byte offset
directory.Set(JfifDirectory.TagVersion, reader.GetUInt16(JfifDirectory.TagVersion));
directory.Set(JfifDirectory.TagUnits, reader.GetByte(JfifDirectory.TagUnits));
directory.Set(JfifDirectory.TagResX, reader.GetUInt16(JfifDirectory.TagResX));
directory.Set(JfifDirectory.TagResY, reader.GetUInt16(JfifDirectory.TagResY));
directory.Set(JfifDirectory.TagThumbWidth, reader.GetByte(JfifDirectory.TagThumbWidth));
directory.Set(JfifDirectory.TagThumbHeight, reader.GetByte(JfifDirectory.TagThumbHeight));
}
catch (IOException e)
{
directory.AddError(e.Message);
}
return(directory);
}
/// <summary>Reads JFXX values and returns them in an <see cref="JfxxDirectory"/>.</summary>
public JfxxDirectory Extract(IndexedReader reader)
{
var directory = new JfxxDirectory();
try
{
// For JFIF the tag number is the value's byte offset
directory.Set(JfxxDirectory.TagExtensionCode, reader.GetByte(JfxxDirectory.TagExtensionCode));
}
catch (IOException e)
{
directory.AddError(e.Message);
}
return(directory);
}
private static void ProcessKodakMakernote([NotNull] KodakMakernoteDirectory directory, int tagValueOffset, [NotNull] IndexedReader reader)
{
// Kodak's makernote is not in IFD format. It has values at fixed offsets.
var dataOffset = tagValueOffset + 8;
try
{
directory.Set(KodakMakernoteDirectory.TagKodakModel, reader.GetString(dataOffset, 8));
directory.Set(KodakMakernoteDirectory.TagQuality, reader.GetByte(dataOffset + 9));
directory.Set(KodakMakernoteDirectory.TagBurstMode, reader.GetByte(dataOffset + 10));
directory.Set(KodakMakernoteDirectory.TagImageWidth, reader.GetUInt16(dataOffset + 12));
directory.Set(KodakMakernoteDirectory.TagImageHeight, reader.GetUInt16(dataOffset + 14));
directory.Set(KodakMakernoteDirectory.TagYearCreated, reader.GetUInt16(dataOffset + 16));
directory.Set(KodakMakernoteDirectory.TagMonthDayCreated, reader.GetBytes(dataOffset + 18, 2));
directory.Set(KodakMakernoteDirectory.TagTimeCreated, reader.GetBytes(dataOffset + 20, 4));
directory.Set(KodakMakernoteDirectory.TagBurstMode2, reader.GetUInt16(dataOffset + 24));
directory.Set(KodakMakernoteDirectory.TagShutterMode, reader.GetByte(dataOffset + 27));
directory.Set(KodakMakernoteDirectory.TagMeteringMode, reader.GetByte(dataOffset + 28));
directory.Set(KodakMakernoteDirectory.TagSequenceNumber, reader.GetByte(dataOffset + 29));
directory.Set(KodakMakernoteDirectory.TagFNumber, reader.GetUInt16(dataOffset + 30));
directory.Set(KodakMakernoteDirectory.TagExposureTime, reader.GetUInt32(dataOffset + 32));
directory.Set(KodakMakernoteDirectory.TagExposureCompensation, reader.GetInt16(dataOffset + 36));
directory.Set(KodakMakernoteDirectory.TagFocusMode, reader.GetByte(dataOffset + 56));
directory.Set(KodakMakernoteDirectory.TagWhiteBalance, reader.GetByte(dataOffset + 64));
directory.Set(KodakMakernoteDirectory.TagFlashMode, reader.GetByte(dataOffset + 92));
directory.Set(KodakMakernoteDirectory.TagFlashFired, reader.GetByte(dataOffset + 93));
directory.Set(KodakMakernoteDirectory.TagIsoSetting, reader.GetUInt16(dataOffset + 94));
directory.Set(KodakMakernoteDirectory.TagIso, reader.GetUInt16(dataOffset + 96));
directory.Set(KodakMakernoteDirectory.TagTotalZoom, reader.GetUInt16(dataOffset + 98));
directory.Set(KodakMakernoteDirectory.TagDateTimeStamp, reader.GetUInt16(dataOffset + 100));
directory.Set(KodakMakernoteDirectory.TagColorMode, reader.GetUInt16(dataOffset + 102));
directory.Set(KodakMakernoteDirectory.TagDigitalZoom, reader.GetUInt16(dataOffset + 104));
directory.Set(KodakMakernoteDirectory.TagSharpness, reader.GetSByte(dataOffset + 107));
}
catch (IOException ex)
{
directory.AddError("Error processing Kodak makernote data: " + ex.Message);
}
}
/// <exception cref="System.IO.IOException"/>
private bool ProcessMakernote(int makernoteOffset, [NotNull] ICollection <int> processedIfdOffsets, int tiffHeaderOffset, [NotNull] IndexedReader reader)
{
// Determine the camera model and makernote format.
var ifd0Directory = Directories.OfType <ExifIfd0Directory>().FirstOrDefault();
if (ifd0Directory == null)
{
return(false);
}
var cameraMake = ifd0Directory.GetString(ExifDirectoryBase.TagMake);
var firstTwoChars = reader.GetString(makernoteOffset, 2);
var firstThreeChars = reader.GetString(makernoteOffset, 3);
var firstFourChars = reader.GetString(makernoteOffset, 4);
var firstFiveChars = reader.GetString(makernoteOffset, 5);
var firstSixChars = reader.GetString(makernoteOffset, 6);
var firstSevenChars = reader.GetString(makernoteOffset, 7);
var firstEightChars = reader.GetString(makernoteOffset, 8);
var firstTwelveChars = reader.GetString(makernoteOffset, 12);
var byteOrderBefore = reader.IsMotorolaByteOrder;
if ("OLYMP" == firstFiveChars || "EPSON" == firstFiveChars || "AGFA" == firstFourChars)
{
// Olympus Makernote
// Epson and Agfa use Olympus makernote standard: http://www.ozhiker.com/electronics/pjmt/jpeg_info/
PushDirectory(typeof(OlympusMakernoteDirectory));
TiffReader.ProcessIfd(this, reader, processedIfdOffsets, makernoteOffset + 8, tiffHeaderOffset);
}
else if (cameraMake != null && cameraMake.ToUpper().StartsWith("MINOLTA"))
{
// Cases seen with the model starting with MINOLTA in capitals seem to have a valid Olympus makernote
// area that commences immediately.
PushDirectory(typeof(OlympusMakernoteDirectory));
TiffReader.ProcessIfd(this, reader, processedIfdOffsets, makernoteOffset, tiffHeaderOffset);
}
else if (cameraMake != null && cameraMake.Trim().ToUpper().StartsWith("NIKON"))
{
if ("Nikon" == firstFiveChars)
{
switch (reader.GetByte(makernoteOffset + 6))
{
case 1:
{
/* There are two scenarios here:
* Type 1: **
* :0000: 4E 69 6B 6F 6E 00 01 00-05 00 02 00 02 00 06 00 Nikon...........
* :0010: 00 00 EC 02 00 00 03 00-03 00 01 00 00 00 06 00 ................
* Type 3: **
* :0000: 4E 69 6B 6F 6E 00 02 00-00 00 4D 4D 00 2A 00 00 Nikon....MM.*...
* :0010: 00 08 00 1E 00 01 00 07-00 00 00 04 30 32 30 30 ............0200
*/
PushDirectory(typeof(NikonType1MakernoteDirectory));
TiffReader.ProcessIfd(this, reader, processedIfdOffsets, makernoteOffset + 8, tiffHeaderOffset);
break;
}
case 2:
{
PushDirectory(typeof(NikonType2MakernoteDirectory));
TiffReader.ProcessIfd(this, reader, processedIfdOffsets, makernoteOffset + 18, makernoteOffset + 10);
break;
}
default:
{
ifd0Directory.AddError("Unsupported Nikon makernote data ignored.");
break;
}
}
}
else
{
// The IFD begins with the first Makernote byte (no ASCII name). This occurs with CoolPix 775, E990 and D1 models.
PushDirectory(typeof(NikonType2MakernoteDirectory));
TiffReader.ProcessIfd(this, reader, processedIfdOffsets, makernoteOffset, tiffHeaderOffset);
}
}
else if ("SONY CAM" == firstEightChars || "SONY DSC" == firstEightChars)
{
PushDirectory(typeof(SonyType1MakernoteDirectory));
TiffReader.ProcessIfd(this, reader, processedIfdOffsets, makernoteOffset + 12, tiffHeaderOffset);
}
else if ("SEMC MS\u0000\u0000\u0000\u0000\u0000" == firstTwelveChars)
{
// force MM for this directory
reader.IsMotorolaByteOrder = true;
// skip 12 byte header + 2 for "MM" + 6
PushDirectory(typeof(SonyType6MakernoteDirectory));
TiffReader.ProcessIfd(this, reader, processedIfdOffsets, makernoteOffset + 20, tiffHeaderOffset);
}
else if ("SIGMA\u0000\u0000\u0000" == firstEightChars || "FOVEON\u0000\u0000" == firstEightChars)
{
PushDirectory(typeof(SigmaMakernoteDirectory));
TiffReader.ProcessIfd(this, reader, processedIfdOffsets, makernoteOffset + 10, tiffHeaderOffset);
}
else if ("KDK" == firstThreeChars)
{
reader.IsMotorolaByteOrder = firstSevenChars == "KDK INFO";
var directory = new KodakMakernoteDirectory();
Directories.Add(directory);
ProcessKodakMakernote(directory, makernoteOffset, reader);
}
else if ("Canon".Equals(cameraMake, StringComparison.OrdinalIgnoreCase))
{
PushDirectory(typeof(CanonMakernoteDirectory));
TiffReader.ProcessIfd(this, reader, processedIfdOffsets, makernoteOffset, tiffHeaderOffset);
}
else if (cameraMake != null && cameraMake.ToUpper().StartsWith("CASIO"))
{
if ("QVC\u0000\u0000\u0000" == firstSixChars)
{
PushDirectory(typeof(CasioType2MakernoteDirectory));
TiffReader.ProcessIfd(this, reader, processedIfdOffsets, makernoteOffset + 6, tiffHeaderOffset);
}
else
{
PushDirectory(typeof(CasioType1MakernoteDirectory));
TiffReader.ProcessIfd(this, reader, processedIfdOffsets, makernoteOffset, tiffHeaderOffset);
}
}
else if ("FUJIFILM" == firstEightChars || "Fujifilm".Equals(cameraMake, StringComparison.OrdinalIgnoreCase))
{
// Note that this also applies to certain Leica cameras, such as the Digilux-4.3
reader.IsMotorolaByteOrder = false;
// the 4 bytes after "FUJIFILM" in the makernote point to the start of the makernote
// IFD, though the offset is relative to the start of the makernote, not the TIFF
// header (like everywhere else)
var ifdStart = makernoteOffset + reader.GetInt32(makernoteOffset + 8);
PushDirectory(typeof(FujifilmMakernoteDirectory));
TiffReader.ProcessIfd(this, reader, processedIfdOffsets, ifdStart, makernoteOffset);
}
else if ("KYOCERA" == firstSevenChars)
{
// http://www.ozhiker.com/electronics/pjmt/jpeg_info/kyocera_mn.html
PushDirectory(typeof(KyoceraMakernoteDirectory));
TiffReader.ProcessIfd(this, reader, processedIfdOffsets, makernoteOffset + 22, tiffHeaderOffset);
}
else if ("LEICA" == firstFiveChars)
{
reader.IsMotorolaByteOrder = false;
if ("Leica Camera AG" == cameraMake)
{
PushDirectory(typeof(LeicaMakernoteDirectory));
TiffReader.ProcessIfd(this, reader, processedIfdOffsets, makernoteOffset + 8, tiffHeaderOffset);
}
else if ("LEICA" == cameraMake)
{
// Some Leica cameras use Panasonic makernote tags
PushDirectory(typeof(PanasonicMakernoteDirectory));
TiffReader.ProcessIfd(this, reader, processedIfdOffsets, makernoteOffset + 8, tiffHeaderOffset);
}
else
{
return(false);
}
}
else if ("Panasonic\u0000\u0000\u0000" == reader.GetString(makernoteOffset, 12))
{
// NON-Standard TIFF IFD Data using Panasonic Tags. There is no Next-IFD pointer after the IFD
// Offsets are relative to the start of the TIFF header at the beginning of the EXIF segment
// more information here: http://www.ozhiker.com/electronics/pjmt/jpeg_info/panasonic_mn.html
PushDirectory(typeof(PanasonicMakernoteDirectory));
TiffReader.ProcessIfd(this, reader, processedIfdOffsets, makernoteOffset + 12, tiffHeaderOffset);
}
else if ("AOC\u0000" == firstFourChars)
{
// NON-Standard TIFF IFD Data using Casio Type 2 Tags
// IFD has no Next-IFD pointer at end of IFD, and
// Offsets are relative to the start of the current IFD tag, not the TIFF header
// Observed for:
// - Pentax ist D
PushDirectory(typeof(CasioType2MakernoteDirectory));
TiffReader.ProcessIfd(this, reader, processedIfdOffsets, makernoteOffset + 6, makernoteOffset);
}
else if (cameraMake != null && (cameraMake.ToUpper().StartsWith("PENTAX") || cameraMake.ToUpper().StartsWith("ASAHI")))
{
// NON-Standard TIFF IFD Data using Pentax Tags
// IFD has no Next-IFD pointer at end of IFD, and
// Offsets are relative to the start of the current IFD tag, not the TIFF header
// Observed for:
// - PENTAX Optio 330
// - PENTAX Optio 430
PushDirectory(typeof(PentaxMakernoteDirectory));
TiffReader.ProcessIfd(this, reader, processedIfdOffsets, makernoteOffset, makernoteOffset);
}
// else if ("KC" == firstTwoChars || "MINOL" == firstFiveChars || "MLY" == firstThreeChars || "+M+M+M+M" == firstEightChars)
// {
// // This Konica data is not understood. Header identified in accordance with information at this site:
// // http://www.ozhiker.com/electronics/pjmt/jpeg_info/minolta_mn.html
// // TODO add support for minolta/konica cameras
// exifDirectory.addError("Unsupported Konica/Minolta data ignored.");
// }
else if ("SANYO\x0\x1\x0" == firstEightChars)
{
PushDirectory(typeof(SanyoMakernoteDirectory));
TiffReader.ProcessIfd(this, reader, processedIfdOffsets, makernoteOffset + 8, makernoteOffset);
}
else if (cameraMake != null && cameraMake.ToLower().StartsWith("ricoh"))
{
if (firstTwoChars == "Rv" || firstThreeChars == "Rev")
{
// This is a textual format, where the makernote bytes look like:
// Rv0103;Rg1C;Bg18;Ll0;Ld0;Aj0000;Bn0473800;Fp2E00:������������������������������
// Rv0103;Rg1C;Bg18;Ll0;Ld0;Aj0000;Bn0473800;Fp2D05:������������������������������
// Rv0207;Sf6C84;Rg76;Bg60;Gg42;Ll0;Ld0;Aj0004;Bn0B02900;Fp10B8;Md6700;Ln116900086D27;Sv263:0000000000000000000000��
// This format is currently unsupported
return(false);
}
if (firstFiveChars.Equals("Ricoh", StringComparison.OrdinalIgnoreCase))
{
// Always in Motorola byte order
reader.IsMotorolaByteOrder = true;
PushDirectory(typeof(RicohMakernoteDirectory));
TiffReader.ProcessIfd(this, reader, processedIfdOffsets, makernoteOffset + 8, makernoteOffset);
}
}
else
{
// The makernote is not comprehended by this library.
// If you are reading this and believe a particular camera's image should be processed, get in touch.
return(false);
}
reader.IsMotorolaByteOrder = byteOrderBefore;
return(true);
}
private static bool PopulateHeader(IndexedReader reader, TgaHeaderDirectory directory, out int idLength, out ColormapInfo colormap)
{
idLength = reader.GetByte(0);
directory.Set(TgaHeaderDirectory.TagIdLength, idLength);
SetDataType();
colormap = SetColormapInfo();
SetGeometry();
SetDepth();
SetFlags();
return(true);
byte SetDataType()
{
var dataType = reader.GetByte(2);
return(dataType switch
{
1 => SetDataTypeMapped(),
9 => SetDataTypeMapped(),
2 => SetDataTypeTrueColor(),
10 => SetDataTypeTrueColor(),
3 => SetDataTypeGrayscale(),
11 => SetDataTypeGrayscale(),
_ => throw new ImageProcessingException("Invalid TGA data type"),
});
byte SetDataTypeMapped()
{
var colormapType = reader.GetByte(1);
if (colormapType == 0)
{
throw new ImageProcessingException("Invalid TGA data type / color map type combo");
}
directory.Set(TgaHeaderDirectory.TagDataType, dataType);
return(dataType);
}
byte SetDataTypeTrueColor()
{
var colormapType = reader.GetByte(1);
if (colormapType != 0)
{
throw new ImageProcessingException("Invalid TGA data type / color map type combo");
}
directory.Set(TgaHeaderDirectory.TagDataType, dataType);
return(dataType);
}
byte SetDataTypeGrayscale()
{
var colormapType = reader.GetByte(1);
if (colormapType != 0)
{
throw new ImageProcessingException("Invalid TGA data type / color map type combo");
}
directory.Set(TgaHeaderDirectory.TagDataType, dataType);
return(dataType);
}
}
/// <exception cref="System.IO.IOException"/>
private static void ProcessTag(ITiffHandler handler, int tagId, int tagValueOffset, int componentCount, TiffDataFormatCode formatCode, IndexedReader reader)
{
switch (formatCode)
{
case TiffDataFormatCode.Undefined:
{
// this includes exif user comments
handler.SetByteArray(tagId, reader.GetBytes(tagValueOffset, componentCount));
break;
}
case TiffDataFormatCode.String:
{
handler.SetString(tagId, reader.GetNullTerminatedStringValue(tagValueOffset, componentCount));
break;
}
case TiffDataFormatCode.RationalS:
{
if (componentCount == 1)
{
handler.SetRational(tagId, new Rational(reader.GetInt32(tagValueOffset), reader.GetInt32(tagValueOffset + 4)));
}
else if (componentCount > 1)
{
var array = new Rational[componentCount];
for (var i = 0; i < componentCount; i++)
{
array[i] = new Rational(reader.GetInt32(tagValueOffset + 8 * i), reader.GetInt32(tagValueOffset + 4 + 8 * i));
}
handler.SetRationalArray(tagId, array);
}
break;
}
case TiffDataFormatCode.RationalU:
{
if (componentCount == 1)
{
handler.SetRational(tagId, new Rational(reader.GetUInt32(tagValueOffset), reader.GetUInt32(tagValueOffset + 4)));
}
else if (componentCount > 1)
{
var array = new Rational[componentCount];
for (var i = 0; i < componentCount; i++)
{
array[i] = new Rational(reader.GetUInt32(tagValueOffset + 8 * i), reader.GetUInt32(tagValueOffset + 4 + 8 * i));
}
handler.SetRationalArray(tagId, array);
}
break;
}
case TiffDataFormatCode.Single:
{
if (componentCount == 1)
{
handler.SetFloat(tagId, reader.GetFloat32(tagValueOffset));
}
else
{
var array = new float[componentCount];
for (var i = 0; i < componentCount; i++)
{
array[i] = reader.GetFloat32(tagValueOffset + i * 4);
}
handler.SetFloatArray(tagId, array);
}
break;
}
case TiffDataFormatCode.Double:
{
if (componentCount == 1)
{
handler.SetDouble(tagId, reader.GetDouble64(tagValueOffset));
}
else
{
var array = new double[componentCount];
for (var i = 0; i < componentCount; i++)
{
array[i] = reader.GetDouble64(tagValueOffset + i * 4);
}
handler.SetDoubleArray(tagId, array);
}
break;
}
case TiffDataFormatCode.Int8S:
{
if (componentCount == 1)
{
handler.SetInt8S(tagId, reader.GetSByte(tagValueOffset));
}
else
{
var array = new sbyte[componentCount];
for (var i = 0; i < componentCount; i++)
{
array[i] = reader.GetSByte(tagValueOffset + i);
}
handler.SetInt8SArray(tagId, array);
}
break;
}
case TiffDataFormatCode.Int8U:
{
if (componentCount == 1)
{
handler.SetInt8U(tagId, reader.GetByte(tagValueOffset));
}
else
{
var array = new byte[componentCount];
for (var i = 0; i < componentCount; i++)
{
array[i] = reader.GetByte(tagValueOffset + i);
}
handler.SetInt8UArray(tagId, array);
}
break;
}
case TiffDataFormatCode.Int16S:
{
if (componentCount == 1)
{
handler.SetInt16S(tagId, reader.GetInt16(tagValueOffset));
}
else
{
var array = new short[componentCount];
for (var i = 0; i < componentCount; i++)
{
array[i] = reader.GetInt16(tagValueOffset + i * 2);
}
handler.SetInt16SArray(tagId, array);
}
break;
}
case TiffDataFormatCode.Int16U:
{
if (componentCount == 1)
{
handler.SetInt16U(tagId, reader.GetUInt16(tagValueOffset));
}
else
{
var array = new ushort[componentCount];
for (var i = 0; i < componentCount; i++)
{
array[i] = reader.GetUInt16(tagValueOffset + i * 2);
}
handler.SetInt16UArray(tagId, array);
}
break;
}
case TiffDataFormatCode.Int32S:
{
// NOTE 'long' in this case means 32 bit, not 64
if (componentCount == 1)
{
handler.SetInt32S(tagId, reader.GetInt32(tagValueOffset));
}
else
{
var array = new int[componentCount];
for (var i = 0; i < componentCount; i++)
{
array[i] = reader.GetInt32(tagValueOffset + i * 4);
}
handler.SetInt32SArray(tagId, array);
}
break;
}
case TiffDataFormatCode.Int32U:
{
// NOTE 'long' in this case means 32 bit, not 64
if (componentCount == 1)
{
handler.SetInt32U(tagId, reader.GetUInt32(tagValueOffset));
}
else
{
var array = new uint[componentCount];
for (var i = 0; i < componentCount; i++)
{
array[i] = reader.GetUInt32(tagValueOffset + i * 4);
}
handler.SetInt32UArray(tagId, array);
}
break;
}
default:
{
handler.Error($"Invalid TIFF tag format code {formatCode} for tag 0x{tagId:X4}");
break;
}
}
}
/// <exception cref="System.IO.IOException"/>
private bool ProcessMakernote(int makernoteOffset, [NotNull] ICollection <int> processedIfdOffsets, [NotNull] IndexedReader reader)
{
Debug.Assert(makernoteOffset >= 0, "makernoteOffset >= 0");
var cameraMake = Directories.OfType <ExifIfd0Directory>().FirstOrDefault()?.GetString(ExifDirectoryBase.TagMake);
var firstTwoChars = reader.GetString(makernoteOffset, 2, Encoding.UTF8);
var firstThreeChars = reader.GetString(makernoteOffset, 3, Encoding.UTF8);
var firstFourChars = reader.GetString(makernoteOffset, 4, Encoding.UTF8);
var firstFiveChars = reader.GetString(makernoteOffset, 5, Encoding.UTF8);
var firstSixChars = reader.GetString(makernoteOffset, 6, Encoding.UTF8);
var firstSevenChars = reader.GetString(makernoteOffset, 7, Encoding.UTF8);
var firstEightChars = reader.GetString(makernoteOffset, 8, Encoding.UTF8);
var firstTenChars = reader.GetString(makernoteOffset, 10, Encoding.UTF8);
var firstTwelveChars = reader.GetString(makernoteOffset, 12, Encoding.UTF8);
if (string.Equals("OLYMP\0", firstSixChars, StringComparison.Ordinal) ||
string.Equals("EPSON", firstFiveChars, StringComparison.Ordinal) ||
string.Equals("AGFA", firstFourChars, StringComparison.Ordinal))
{
// Olympus Makernote
// Epson and Agfa use Olympus makernote standard: http://www.ozhiker.com/electronics/pjmt/jpeg_info/
PushDirectory(new OlympusMakernoteDirectory());
TiffReader.ProcessIfd(this, reader, processedIfdOffsets, makernoteOffset + 8);
}
else if (string.Equals("OLYMPUS\0II", firstTenChars, StringComparison.Ordinal))
{
// Olympus Makernote (alternate)
// Note that data is relative to the beginning of the makernote
// http://exiv2.org/makernote.html
PushDirectory(new OlympusMakernoteDirectory());
TiffReader.ProcessIfd(this, reader.WithShiftedBaseOffset(makernoteOffset), processedIfdOffsets, 12);
}
else if (cameraMake != null && cameraMake.StartsWith("MINOLTA", StringComparison.OrdinalIgnoreCase))
{
// Cases seen with the model starting with MINOLTA in capitals seem to have a valid Olympus makernote
// area that commences immediately.
PushDirectory(new OlympusMakernoteDirectory());
TiffReader.ProcessIfd(this, reader, processedIfdOffsets, makernoteOffset);
}
else if (cameraMake != null && cameraMake.TrimStart().StartsWith("NIKON", StringComparison.OrdinalIgnoreCase))
{
if (string.Equals("Nikon", firstFiveChars, StringComparison.Ordinal))
{
switch (reader.GetByte(makernoteOffset + 6))
{
case 1:
{
/* There are two scenarios here:
* Type 1: **
* :0000: 4E 69 6B 6F 6E 00 01 00-05 00 02 00 02 00 06 00 Nikon...........
* :0010: 00 00 EC 02 00 00 03 00-03 00 01 00 00 00 06 00 ................
* Type 3: **
* :0000: 4E 69 6B 6F 6E 00 02 00-00 00 4D 4D 00 2A 00 00 Nikon....MM.*...
* :0010: 00 08 00 1E 00 01 00 07-00 00 00 04 30 32 30 30 ............0200
*/
PushDirectory(new NikonType1MakernoteDirectory());
TiffReader.ProcessIfd(this, reader, processedIfdOffsets, makernoteOffset + 8);
break;
}
case 2:
{
PushDirectory(new NikonType2MakernoteDirectory());
TiffReader.ProcessIfd(this, reader.WithShiftedBaseOffset(makernoteOffset + 10), processedIfdOffsets, 8);
break;
}
default:
{
Error("Unsupported Nikon makernote data ignored.");
break;
}
}
}
else
{
// The IFD begins with the first Makernote byte (no ASCII name). This occurs with CoolPix 775, E990 and D1 models.
PushDirectory(new NikonType2MakernoteDirectory());
TiffReader.ProcessIfd(this, reader, processedIfdOffsets, makernoteOffset);
}
}
else if (string.Equals("SONY CAM", firstEightChars, StringComparison.Ordinal) ||
string.Equals("SONY DSC", firstEightChars, StringComparison.Ordinal))
{
PushDirectory(new SonyType1MakernoteDirectory());
TiffReader.ProcessIfd(this, reader, processedIfdOffsets, makernoteOffset + 12);
}
// Do this check LAST after most other Sony checks
else if (cameraMake != null && cameraMake.StartsWith("SONY", StringComparison.Ordinal) &&
reader.GetBytes(makernoteOffset, 2) != new byte[] { 0x01, 0x00 })
{
// The IFD begins with the first Makernote byte (no ASCII name). Used in SR2 and ARW images
PushDirectory(new SonyType1MakernoteDirectory());
TiffReader.ProcessIfd(this, reader, processedIfdOffsets, makernoteOffset);
}
else if (string.Equals("SEMC MS\u0000\u0000\u0000\u0000\u0000", firstTwelveChars, StringComparison.Ordinal))
{
// Force Motorola byte order for this directory
// skip 12 byte header + 2 for "MM" + 6
PushDirectory(new SonyType6MakernoteDirectory());
TiffReader.ProcessIfd(this, reader.WithByteOrder(isMotorolaByteOrder: true), processedIfdOffsets, makernoteOffset + 20);
}
else if (string.Equals("SIGMA\u0000\u0000\u0000", firstEightChars, StringComparison.Ordinal) ||
string.Equals("FOVEON\u0000\u0000", firstEightChars, StringComparison.Ordinal))
{
PushDirectory(new SigmaMakernoteDirectory());
TiffReader.ProcessIfd(this, reader, processedIfdOffsets, makernoteOffset + 10);
}
else if (string.Equals("KDK", firstThreeChars, StringComparison.Ordinal))
{
var directory = new KodakMakernoteDirectory();
Directories.Add(directory);
ProcessKodakMakernote(directory, makernoteOffset, reader.WithByteOrder(isMotorolaByteOrder: firstSevenChars == "KDK INFO"));
}
else if ("CANON".Equals(cameraMake, StringComparison.OrdinalIgnoreCase))
{
PushDirectory(new CanonMakernoteDirectory());
TiffReader.ProcessIfd(this, reader, processedIfdOffsets, makernoteOffset);
}
else if (cameraMake != null && cameraMake.StartsWith("CASIO", StringComparison.OrdinalIgnoreCase))
{
if (string.Equals("QVC\u0000\u0000\u0000", firstSixChars, StringComparison.Ordinal))
{
PushDirectory(new CasioType2MakernoteDirectory());
TiffReader.ProcessIfd(this, reader, processedIfdOffsets, makernoteOffset + 6);
}
else
{
PushDirectory(new CasioType1MakernoteDirectory());
TiffReader.ProcessIfd(this, reader, processedIfdOffsets, makernoteOffset);
}
}
else if (string.Equals("FUJIFILM", firstEightChars, StringComparison.Ordinal) ||
string.Equals("FUJIFILM", cameraMake, StringComparison.OrdinalIgnoreCase))
{
// Note that this also applies to certain Leica cameras, such as the Digilux-4.3.
// The 4 bytes after "FUJIFILM" in the makernote point to the start of the makernote
// IFD, though the offset is relative to the start of the makernote, not the TIFF header
var makernoteReader = reader.WithShiftedBaseOffset(makernoteOffset).WithByteOrder(isMotorolaByteOrder: false);
var ifdStart = makernoteReader.GetInt32(8);
PushDirectory(new FujifilmMakernoteDirectory());
TiffReader.ProcessIfd(this, makernoteReader, processedIfdOffsets, ifdStart);
}
else if (string.Equals("KYOCERA", firstSevenChars, StringComparison.Ordinal))
{
// http://www.ozhiker.com/electronics/pjmt/jpeg_info/kyocera_mn.html
PushDirectory(new KyoceraMakernoteDirectory());
TiffReader.ProcessIfd(this, reader, processedIfdOffsets, makernoteOffset + 22);
}
else if (string.Equals("LEICA", firstFiveChars, StringComparison.Ordinal))
{
// used by the X1/X2/X VARIO/T
// (X1 starts with "LEICA\0\x01\0", Make is "LEICA CAMERA AG")
// (X2 starts with "LEICA\0\x05\0", Make is "LEICA CAMERA AG")
// (X VARIO starts with "LEICA\0\x04\0", Make is "LEICA CAMERA AG")
// (T (Typ 701) starts with "LEICA\0\0x6", Make is "LEICA CAMERA AG")
// (X (Typ 113) starts with "LEICA\0\0x7", Make is "LEICA CAMERA AG")
if (string.Equals("LEICA\0\x1\0", firstEightChars, StringComparison.Ordinal) ||
string.Equals("LEICA\0\x4\0", firstEightChars, StringComparison.Ordinal) ||
string.Equals("LEICA\0\x5\0", firstEightChars, StringComparison.Ordinal) ||
string.Equals("LEICA\0\x6\0", firstEightChars, StringComparison.Ordinal) ||
string.Equals("LEICA\0\x7\0", firstEightChars, StringComparison.Ordinal))
{
PushDirectory(new LeicaType5MakernoteDirectory());
TiffReader.ProcessIfd(this, reader.WithShiftedBaseOffset(makernoteOffset), processedIfdOffsets, 8);
}
else if (string.Equals("Leica Camera AG", cameraMake, StringComparison.Ordinal))
{
PushDirectory(new LeicaMakernoteDirectory());
TiffReader.ProcessIfd(this, reader.WithByteOrder(isMotorolaByteOrder: false), processedIfdOffsets, makernoteOffset + 8);
}
else if (string.Equals("LEICA", cameraMake, StringComparison.Ordinal))
{
// Some Leica cameras use Panasonic makernote tags
PushDirectory(new PanasonicMakernoteDirectory());
TiffReader.ProcessIfd(this, reader.WithByteOrder(isMotorolaByteOrder: false), processedIfdOffsets, makernoteOffset + 8);
}
else
{
return(false);
}
}
else if (string.Equals("Panasonic\u0000\u0000\u0000", firstTwelveChars, StringComparison.Ordinal))
{
// NON-Standard TIFF IFD Data using Panasonic Tags. There is no Next-IFD pointer after the IFD
// Offsets are relative to the start of the TIFF header at the beginning of the EXIF segment
// more information here: http://www.ozhiker.com/electronics/pjmt/jpeg_info/panasonic_mn.html
PushDirectory(new PanasonicMakernoteDirectory());
TiffReader.ProcessIfd(this, reader, processedIfdOffsets, makernoteOffset + 12);
}
else if (string.Equals("AOC\u0000", firstFourChars, StringComparison.Ordinal))
{
// NON-Standard TIFF IFD Data using Casio Type 2 Tags
// IFD has no Next-IFD pointer at end of IFD, and
// Offsets are relative to the start of the current IFD tag, not the TIFF header
// Observed for:
// - Pentax ist D
PushDirectory(new CasioType2MakernoteDirectory());
TiffReader.ProcessIfd(this, reader.WithShiftedBaseOffset(makernoteOffset), processedIfdOffsets, 6);
}
else if (cameraMake != null && (cameraMake.StartsWith("PENTAX", StringComparison.OrdinalIgnoreCase) || cameraMake.StartsWith("ASAHI", StringComparison.OrdinalIgnoreCase)))
{
// NON-Standard TIFF IFD Data using Pentax Tags
// IFD has no Next-IFD pointer at end of IFD, and
// Offsets are relative to the start of the current IFD tag, not the TIFF header
// Observed for:
// - PENTAX Optio 330
// - PENTAX Optio 430
PushDirectory(new PentaxMakernoteDirectory());
TiffReader.ProcessIfd(this, reader.WithShiftedBaseOffset(makernoteOffset), processedIfdOffsets, 0);
}
// else if ("KC" == firstTwoChars || "MINOL" == firstFiveChars || "MLY" == firstThreeChars || "+M+M+M+M" == firstEightChars)
// {
// // This Konica data is not understood. Header identified in accordance with information at this site:
// // http://www.ozhiker.com/electronics/pjmt/jpeg_info/minolta_mn.html
// // TODO add support for minolta/konica cameras
// exifDirectory.addError("Unsupported Konica/Minolta data ignored.");
// }
else if (string.Equals("SANYO\x0\x1\x0", firstEightChars, StringComparison.Ordinal))
{
PushDirectory(new SanyoMakernoteDirectory());
TiffReader.ProcessIfd(this, reader.WithShiftedBaseOffset(makernoteOffset), processedIfdOffsets, 8);
}
else if (cameraMake != null && cameraMake.StartsWith("RICOH", StringComparison.OrdinalIgnoreCase))
{
if (string.Equals(firstTwoChars, "Rv", StringComparison.Ordinal) ||
string.Equals(firstThreeChars, "Rev", StringComparison.Ordinal))
{
// This is a textual format, where the makernote bytes look like:
// Rv0103;Rg1C;Bg18;Ll0;Ld0;Aj0000;Bn0473800;Fp2E00:������������������������������
// Rv0103;Rg1C;Bg18;Ll0;Ld0;Aj0000;Bn0473800;Fp2D05:������������������������������
// Rv0207;Sf6C84;Rg76;Bg60;Gg42;Ll0;Ld0;Aj0004;Bn0B02900;Fp10B8;Md6700;Ln116900086D27;Sv263:0000000000000000000000��
// This format is currently unsupported
return(false);
}
if (firstFiveChars.Equals("RICOH", StringComparison.OrdinalIgnoreCase))
{
PushDirectory(new RicohMakernoteDirectory());
// Always in Motorola byte order
TiffReader.ProcessIfd(this, reader.WithByteOrder(isMotorolaByteOrder: true).WithShiftedBaseOffset(makernoteOffset), processedIfdOffsets, 8);
}
}
else if (string.Equals(firstTenChars, "Apple iOS\0", StringComparison.Ordinal))
{
PushDirectory(new AppleMakernoteDirectory());
// Always in Motorola byte order
TiffReader.ProcessIfd(this, reader.WithByteOrder(isMotorolaByteOrder: true).WithShiftedBaseOffset(makernoteOffset), processedIfdOffsets, 14);
}
else if (string.Equals("RECONYX", cameraMake, StringComparison.OrdinalIgnoreCase) ||
reader.GetUInt16(makernoteOffset) == ReconyxMakernoteDirectory.HyperFireMakernoteVersion)
{
var directory = new ReconyxMakernoteDirectory();
Directories.Add(directory);
ProcessReconyxMakernote(directory, makernoteOffset, reader);
}
else if (string.Equals("SAMSUNG", cameraMake, StringComparison.Ordinal))
{
// Only handles Type2 notes correctly. Others aren't implemented, and it's complex to determine which ones to use
PushDirectory(new SamsungType2MakernoteDirectory());
TiffReader.ProcessIfd(this, reader, processedIfdOffsets, makernoteOffset);
}
else
{
// The makernote is not comprehended by this library.
// If you are reading this and believe a particular camera's image should be processed, get in touch.
return(false);
}
return(true);
}
