X-Git-Url: https://gitweb.fperrin.net/?p=GpsPrune.git;a=blobdiff_plain;f=src%2Ftim%2Fprune%2Fjpeg%2FJpegData.java;fp=src%2Ftim%2Fprune%2Fjpeg%2FJpegData.java;h=8a25f6d276cf0d4355439b7495ba44ef463d2a34;hp=0000000000000000000000000000000000000000;hb=ce6f2161b8596f7018d6a76bff79bc9e571f35fd;hpb=2d8cb72e84d5cc1089ce77baf1e34ea3ea2f8465

diff --git a/src/tim/prune/jpeg/JpegData.java b/src/tim/prune/jpeg/JpegData.java
new file mode 100644
index 0000000..8a25f6d
--- /dev/null
+++ b/src/tim/prune/jpeg/JpegData.java
@@ -0,0 +1,254 @@
+package tim.prune.jpeg;
+
+import java.util.ArrayList;
+
+/**
+ * Class to hold the GPS data extracted from a Jpeg including position and time
+ */
+public class JpegData
+{
+	private boolean _exifDataPresent = false;
+	private char _latitudeRef = '\0';
+	private char _longitudeRef = '\0';
+	private byte _altitudeRef = 0;
+	private double[] _latitude = null;
+	private double[] _longitude = null;
+	private int _altitude = -1;
+	private boolean _altitudePresent = false;
+	private int[] _gpsTimestamp = null;
+	private int[] _gpsDatestamp = null;
+	private String _originalTimestamp = null;
+	private String _digitizedTimestamp = null;
+	private int _orientationCode = -1;
+	private byte[] _thumbnail = null;
+	private double _bearing = -1.0;
+	private ArrayList<String> _errors = null;
+
+
+	/**
+	 * Set the exif data present flag
+	 */
+	public void setExifDataPresent()
+	{
+		_exifDataPresent = true;
+	}
+	/**
+	 * @return true if exif data found
+	 */
+	public boolean getExifDataPresent()
+	{
+		return _exifDataPresent;
+	}
+
+	/**
+	 * Set the latitude reference (N/S)
+	 * @param inString string containing reference
+	 */
+	public void setLatitudeRef(String inString)
+	{
+		if (inString != null && inString.length() == 1)
+			_latitudeRef = inString.charAt(0);
+	}
+
+	/**
+	 * Set the latitude
+	 * @param inValues array of three doubles for deg-min-sec
+	 */
+	public void setLatitude(double[] inValues)
+	{
+		if (inValues != null && inValues.length == 3)
+			_latitude = inValues;
+	}
+
+	/**
+	 * Set the longitude reference (E/W)
+	 * @param inString string containing reference
+	 */
+	public void setLongitudeRef(String inString)
+	{
+		if (inString != null && inString.length() == 1)
+			_longitudeRef = inString.charAt(0);
+	}
+
+	/**
+	 * Set the longitude
+	 * @param inValues array of three doubles for deg-min-sec
+	 */
+	public void setLongitude(double[] inValues)
+	{
+		if (inValues != null && inValues.length == 3)
+			_longitude = inValues;
+	}
+
+	/**
+	 * Set the altitude reference (sea level / not)
+	 * @param inByte byte representing reference
+	 */
+	public void setAltitudeRef(byte inByte)
+	{
+		_altitudeRef = inByte;
+	}
+
+	/**
+	 * Set the altitude
+	 * @param inValue integer representing altitude
+	 */
+	public void setAltitude(int inValue)
+	{
+		_altitude = inValue;
+		_altitudePresent = true;
+	}
+
+	/**
+	 * Set the Gps timestamp
+	 * @param inValues array of ints holding timestamp
+	 */
+	public void setGpsTimestamp(int[] inValues)
+	{
+		_gpsTimestamp = inValues;
+	}
+
+	/**
+	 * Set the Gps datestamp
+	 * @param inValues array of ints holding datestamp
+	 */
+	public void setGpsDatestamp(int[] inValues)
+	{
+		_gpsDatestamp = inValues;
+	}
+
+	/**
+	 * Set the original timestamp
+	 * @param inStamp original timestamp of photo
+	 */
+	public void setOriginalTimestamp(String inStamp)
+	{
+		_originalTimestamp = inStamp;
+	}
+
+	/**
+	 * Set the digitized timestamp
+	 * @param inStamp digitized (creation) timestamp of photo
+	 */
+	public void setDigitizedTimestamp(String inStamp)
+	{
+		_digitizedTimestamp = inStamp;
+	}
+
+	/**
+	 * Set the orientation code
+	 * @param inCode code from exif (1 to 8)
+	 */
+	public void setOrientationCode(int inCode)
+	{
+		if (inCode >= 1 && inCode <= 8) {
+			_orientationCode = inCode;
+		}
+	}
+
+	/**
+	 * Set the bearing (0 - 360)
+	 * @param inBearing bearing in degrees
+	 */
+	public void setBearing(double inBearing)
+	{
+		_bearing = inBearing;
+	}
+
+	/** @return latitude ref as char */
+	public char getLatitudeRef() { return _latitudeRef; }
+	/** @return latitude as array of 3 Rationals */
+	public double[] getLatitude() { return _latitude; }
+	/** @return longitude ref as char */
+	public char getLongitudeRef() { return _longitudeRef; }
+	/** @return longitude as array of 3 doubles */
+	public double[] getLongitude() { return _longitude; }
+	/** @return altitude ref as byte (should be 0) */
+	public byte getAltitudeRef() { return _altitudeRef; }
+	/** @return true if altitude present */
+	public boolean hasAltitude() { return _altitudePresent; }
+	/** @return altitude as int */
+	public int getAltitude() { return _altitude; }
+	/** @return Gps timestamp as array of 3 ints */
+	public int[] getGpsTimestamp() { return _gpsTimestamp; }
+	/** @return Gps datestamp as array of 3 ints */
+	public int[] getGpsDatestamp() { return _gpsDatestamp; }
+	/** @return orientation code (1 to 8) */
+	public int getOrientationCode() { return _orientationCode; }
+	/** @return original timestamp as string */
+	public String getOriginalTimestamp() { return _originalTimestamp; }
+	/** @return digitized timestamp as string */
+	public String getDigitizedTimestamp() { return _digitizedTimestamp; }
+	/** @return bearing in degrees or -1 */
+	public double getBearing() { return _bearing; }
+
+	/**
+	 * Set the thumbnail
+	 * @param inBytes byte array containing thumbnail
+	 */
+	public void setThumbnailImage(byte[] inBytes) {
+		_thumbnail = inBytes;
+	}
+	/** @return thumbnail as byte array */
+	public byte[] getThumbnailImage() {
+		return _thumbnail;
+	}
+
+	/**
+	 * @return rotation required to display photo properly (0 to 3)
+	 */
+	public int getRequiredRotation()
+	{
+		if (_orientationCode <= 2) { return 0; } // no rotation required
+		if (_orientationCode <= 4) { return 2; } // 180 degrees
+		if (_orientationCode <= 6) { return 1; } // 270 degrees, so need to rotate by 90
+		return 3; // 90 degrees, so need to rotate by 270
+	}
+
+	/**
+	 * @return true if data looks valid, ie has at least lat and long
+	 *  (altitude and timestamp optional).
+	 */
+	public boolean isGpsValid()
+	{
+		return (_latitudeRef == 'N' || _latitudeRef == 'n' || _latitudeRef == 'S' || _latitudeRef == 's')
+			&& _latitude != null
+			&& (_longitudeRef == 'E' || _longitudeRef == 'e' || _longitudeRef == 'W' || _longitudeRef == 'w')
+			&& _longitude != null;
+	}
+
+	/**
+	 * Add the given error message to the list of errors
+	 * @param inError String containing error message
+	 */
+	public void addError(String inError)
+	{
+		if (_errors == null) _errors = new ArrayList<String>();
+		_errors.add(inError);
+	}
+
+	/**
+	 * @return the number of errors, if any
+	 */
+	public int getNumErrors()
+	{
+		if (_errors == null) return 0;
+		return _errors.size();
+	}
+
+	/**
+	 * @return true if errors occurred
+	 */
+	public boolean hasErrors()
+	{
+		return getNumErrors() > 0;
+	}
+
+	/**
+	 * @return all errors as a list
+	 */
+	public ArrayList<String> getErrors()
+	{
+		return _errors;
+	}
+}