/**
* Saves a PNG Image
*
* @param resourceName is the name of the PNG image to save.
* @param image the Image to save.
*/
public static void savePngImage(String RMSName, String resourceName, Image image)
throws Exception {
RecordStore imagesRS = null;
int height, width;
if (resourceName == null) return; // resource name is required
// Calculate needed size and allocate buffer area
height = image.getHeight();
width = image.getWidth();
int[] imgRgbData = new int[width * height];
try {
image.getRGB(imgRgbData, 0, width, 0, 0, width, height);
imagesRS = RecordStore.openRecordStore(RMSName, true);
//
ByteArrayOutputStream bout = new ByteArrayOutputStream();
DataOutputStream dout = new DataOutputStream(bout);
// Serialize the image name
dout.writeUTF(resourceName);
dout.writeInt(width);
dout.writeInt(height);
dout.writeLong(System.currentTimeMillis());
dout.writeInt(imgRgbData.length);
// Serialize the image raw data
for (int i = 0; i < imgRgbData.length; i++) {
dout.writeInt(imgRgbData[i]);
}
dout.flush();
dout.close();
byte[] data = bout.toByteArray();
imagesRS.addRecord(data, 0, data.length);
} catch (RecordStoreFullException e) {
Log.error("The Record Store is full, can't save any more tiles");
throw new RecordStoreFullException("Meh");
} catch (Exception e) {
e.printStackTrace();
} finally {
try {
// Close the Record Store
if (imagesRS != null) imagesRS.closeRecordStore();
} catch (Exception e) {
Log.error("Exception in finally clause while saving png image " + e.getMessage());
}
}
}
/**
* Return a list of all the images stored in this RMS
*
* @param recordStore
*/
public static Vector getImageList(String recordStore) {
Log.debug("Getting Image list store name=[" + recordStore + "]");
RecordStore imagesRS = null;
Vector v = new Vector();
try {
imagesRS = RecordStore.openRecordStore(recordStore, true);
RecordEnumeration re = imagesRS.enumerateRecords(null, null, true);
if (re != null) {
Log.debug("ImageRMSUtils: Record Enumeration was not null ");
int numRecs = re.numRecords();
// For each record
for (int i = 0; i < numRecs; i++) {
// Get the next record's ID
int recId = re.nextRecordId(); // throws
// InvalidRecordIDException
// Get the record
Log.debug("Got a record");
byte[] rec = imagesRS.getRecord(recId);
ByteArrayInputStream bin = new ByteArrayInputStream(rec);
DataInputStream din = new DataInputStream(bin);
v.addElement(din.readUTF());
bin.close();
}
} else {
Log.error("ImageRMSUtils Exception Record Enumeration was null ");
}
Log.debug("Retrieved " + v.size() + " images from RMS");
} catch (InvalidRecordIDException ignore) {
Log.error("RecordId Exception " + ignore.getMessage());
} catch (Exception e) {
Log.error("ImageRMSUtils Exception " + e.getMessage());
} finally {
try {
// Close the Record Store
if (imagesRS != null) imagesRS.closeRecordStore();
} catch (Exception ignore) {
// Ignore
}
}
return v;
}
/**
* Load image with specified name
*
* @param recordStore is the name of the record store.
* @param resourceName is the name of the image to load
* @return the loaded Image or null.
*/
public static Image loadPngFromRMS(String recordStore, String resourceName) {
RecordStore imagesRS = null;
Image img = null;
try {
imagesRS = RecordStore.openRecordStore(recordStore, true);
RecordEnumeration re = imagesRS.enumerateRecords(null, null, true);
int numRecs = re.numRecords();
// For each record
for (int i = 0; i < numRecs; i++) {
// Get the next record's ID
int recId = re.nextRecordId(); // throws
// InvalidRecordIDException
// Get the record
byte[] rec = imagesRS.getRecord(recId);
//
ByteArrayInputStream bin = new ByteArrayInputStream(rec);
DataInputStream din = new DataInputStream(bin);
String name = din.readUTF();
// If this is the image we are looking for, load it.
if (name.equals(resourceName) == false) continue;
int width = din.readInt();
int height = din.readInt();
long timestamp = din.readLong();
int length = din.readInt();
int[] rawImg = new int[width * height];
// Serialize the image raw data
for (i = 0; i < length; i++) {
rawImg[i] = din.readInt();
}
img = Image.createRGBImage(rawImg, width, height, false);
din.close();
bin.close();
}
} catch (InvalidRecordIDException ignore) {
// End of enumeration, ignore
} catch (Exception e) {
Log.error("Exception while retrieving Image: " + e.getMessage());
} finally {
try {
// Close the Record Store
if (imagesRS != null) imagesRS.closeRecordStore();
} catch (Exception ignore) {
// Ignore
}
}
return img;
}