/// <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;
}
}
}
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;
}
}