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;
}
}
