public IEnumerable <Directory> Extract(IndexedReader reader)
{
var header = reader.GetUInt32(0);
if (header != 0x46464600)
{
var flirHeaderDirectory = new FlirHeaderDirectory();
flirHeaderDirectory.AddError("Unexpected FFF header bytes.");
yield return(flirHeaderDirectory);
yield break;
}
var headerDirectory = new FlirHeaderDirectory();
headerDirectory.Set(FlirHeaderDirectory.TagCreatorSoftware, reader.GetNullTerminatedStringValue(4, 16));
yield return(headerDirectory);
var baseIndexOffset = reader.GetUInt32(24);
var indexCount = reader.GetUInt32(28);
var indexOffset = checked ((int)baseIndexOffset);
for (int i = 0; i < indexCount; i++)
{
var mainType = (FlirMainTagType)reader.GetUInt16(indexOffset);
var subType = reader.GetUInt16(indexOffset + 2); // 1=BE, 2=LE, 3=PNG; 1 for other record types
var version = reader.GetUInt32(indexOffset + 4);
var id = reader.GetUInt32(indexOffset + 8);
var dataOffset = reader.GetInt32(indexOffset + 12);
var dataLength = reader.GetInt32(indexOffset + 16);
if (mainType == FlirMainTagType.Pixels)
{
var reader2 = reader.WithShiftedBaseOffset(dataOffset);
// should be 0x0002 if byte order is correct
var marker = reader2.GetUInt16(0);
if (marker > 0x0100)
{
reader2 = reader2.WithByteOrder(!reader2.IsMotorolaByteOrder);
}
var directory = new FlirRawDataDirectory();
directory.Set(FlirRawDataDirectory.TagRawThermalImageWidth, reader2.GetUInt16(FlirRawDataDirectory.TagRawThermalImageWidth));
directory.Set(FlirRawDataDirectory.TagRawThermalImageHeight, reader2.GetUInt16(FlirRawDataDirectory.TagRawThermalImageHeight));
directory.Set(FlirRawDataDirectory.TagRawThermalImageType, reader2.GetUInt16(FlirRawDataDirectory.TagRawThermalImageType));
if (ExtractRawThermalImage)
{
directory.Set(FlirRawDataDirectory.TagRawThermalImage, reader2.GetBytes(32, dataLength - 32));
}
yield return(directory);
}
else if (mainType == FlirMainTagType.BasicData)
{
var reader2 = reader.WithShiftedBaseOffset(dataOffset);
// should be 0x0002 if byte order is correct
var marker = reader2.GetUInt16(0);
if (marker > 0x0100)
{
reader2 = reader2.WithByteOrder(!reader2.IsMotorolaByteOrder);
}
var directory = new FlirCameraInfoDirectory();
directory.Set(TagEmissivity, reader2.GetFloat32(TagEmissivity));
directory.Set(TagObjectDistance, reader2.GetFloat32(TagObjectDistance));
directory.Set(TagReflectedApparentTemperature, reader2.GetFloat32(TagReflectedApparentTemperature));
directory.Set(TagAtmosphericTemperature, reader2.GetFloat32(TagAtmosphericTemperature));
directory.Set(TagIRWindowTemperature, reader2.GetFloat32(TagIRWindowTemperature));
directory.Set(TagIRWindowTransmission, reader2.GetFloat32(TagIRWindowTransmission));
directory.Set(TagRelativeHumidity, reader2.GetFloat32(TagRelativeHumidity));
directory.Set(TagPlanckR1, reader2.GetFloat32(TagPlanckR1));
directory.Set(TagPlanckB, reader2.GetFloat32(TagPlanckB));
directory.Set(TagPlanckF, reader2.GetFloat32(TagPlanckF));
directory.Set(TagAtmosphericTransAlpha1, reader2.GetFloat32(TagAtmosphericTransAlpha1));
directory.Set(TagAtmosphericTransAlpha2, reader2.GetFloat32(TagAtmosphericTransAlpha2));
directory.Set(TagAtmosphericTransBeta1, reader2.GetFloat32(TagAtmosphericTransBeta1));
directory.Set(TagAtmosphericTransBeta2, reader2.GetFloat32(TagAtmosphericTransBeta2));
directory.Set(TagAtmosphericTransX, reader2.GetFloat32(TagAtmosphericTransX));
directory.Set(TagCameraTemperatureRangeMax, reader2.GetFloat32(TagCameraTemperatureRangeMax));
directory.Set(TagCameraTemperatureRangeMin, reader2.GetFloat32(TagCameraTemperatureRangeMin));
directory.Set(TagCameraTemperatureMaxClip, reader2.GetFloat32(TagCameraTemperatureMaxClip));
directory.Set(TagCameraTemperatureMinClip, reader2.GetFloat32(TagCameraTemperatureMinClip));
directory.Set(TagCameraTemperatureMaxWarn, reader2.GetFloat32(TagCameraTemperatureMaxWarn));
directory.Set(TagCameraTemperatureMinWarn, reader2.GetFloat32(TagCameraTemperatureMinWarn));
directory.Set(TagCameraTemperatureMaxSaturated, reader2.GetFloat32(TagCameraTemperatureMaxSaturated));
directory.Set(TagCameraTemperatureMinSaturated, reader2.GetFloat32(TagCameraTemperatureMinSaturated));
directory.Set(TagCameraModel, reader2.GetNullTerminatedStringValue(TagCameraModel, 32));
directory.Set(TagCameraPartNumber, reader2.GetNullTerminatedStringValue(TagCameraPartNumber, 16));
directory.Set(TagCameraSerialNumber, reader2.GetNullTerminatedStringValue(TagCameraSerialNumber, 16));
directory.Set(TagCameraSoftware, reader2.GetNullTerminatedStringValue(TagCameraSoftware, 16));
directory.Set(TagLensModel, reader2.GetNullTerminatedStringValue(TagLensModel, 32));
directory.Set(TagLensPartNumber, reader2.GetNullTerminatedStringValue(TagLensPartNumber, 16));
directory.Set(TagLensSerialNumber, reader2.GetNullTerminatedStringValue(TagLensSerialNumber, 16));
directory.Set(TagFieldOfView, reader2.GetFloat32(TagFieldOfView));
directory.Set(TagFilterModel, reader2.GetNullTerminatedStringValue(TagFilterModel, 16));
directory.Set(TagFilterPartNumber, reader2.GetNullTerminatedStringValue(TagFilterPartNumber, 32));
directory.Set(TagFilterSerialNumber, reader2.GetNullTerminatedStringValue(TagFilterSerialNumber, 32));
directory.Set(TagPlanckO, reader2.GetInt32(TagPlanckO));
directory.Set(TagPlanckR2, reader2.GetFloat32(TagPlanckR2));
directory.Set(TagRawValueRangeMin, reader2.GetUInt16(TagRawValueRangeMin));
directory.Set(TagRawValueRangeMax, reader2.GetUInt16(TagRawValueRangeMax));
directory.Set(TagRawValueMedian, reader2.GetUInt16(TagRawValueMedian));
directory.Set(TagRawValueRange, reader2.GetUInt16(TagRawValueRange));
var dateTimeBytes = reader2.GetBytes(TagDateTimeOriginal, 10);
var dateTimeReader = new SequentialByteArrayReader(dateTimeBytes, isMotorolaByteOrder: false);
var tm = dateTimeReader.GetUInt32();
var ss = dateTimeReader.GetUInt32() & 0xffff;
var tz = dateTimeReader.GetInt16();
directory.Set(TagDateTimeOriginal, new DateTimeOffset(DateUtil.FromUnixTime(tm - tz * 60).AddSeconds(ss / 1000d), TimeSpan.FromMinutes(tz)));
directory.Set(TagFocusStepCount, reader2.GetUInt16(TagFocusStepCount));
directory.Set(TagFocusDistance, reader2.GetFloat32(TagFocusDistance));
directory.Set(TagFrameRate, reader2.GetUInt16(TagFrameRate));
yield return(directory);
}
indexOffset += 32;
}
}
/// <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);
}
