// For duplicates and slices
//
DirectCharBufferS(
DirectBuffer db, // package-private
int mark,
int pos,
int lim,
int cap,
int off) {
super(mark, pos, lim, cap);
address = db.address() + off;
viewedBuffer = db;
}
private static ImageData readPPM(File file) throws IOException, BadImageFileException {
FileInputStream s = new FileInputStream(file);
ImageData imageData;
try {
String S1 = readln(s);
int width;
int height;
int bands;
int dataType;
if (S1.equals("P5") || S1.equals("P6")) {
bands = S1.equals("P5") ? 1 : 3;
String S2 = readln(s);
String S3 = readln(s);
String dimensions[] = S2.split("\\s");
width = Integer.parseInt(dimensions[0]);
height = Integer.parseInt(dimensions[1]);
dataType = S3.equals("255") ? DataBuffer.TYPE_BYTE : DataBuffer.TYPE_USHORT;
imageData = new ImageData(width, height, bands, dataType);
} else if (S1.equals("P7")) {
String WIDTH = "WIDTH ";
String HEIGHT = "HEIGHT ";
String DEPTH = "DEPTH ";
String MAXVAL = "MAXVAL ";
// String TUPLTYPE = "TUPLTYPE ";
// String ENDHDR = "ENDHDR";
String SWIDTH = readln(s);
width = Integer.parseInt(SWIDTH.substring(WIDTH.length()));
String SHEIGHT = readln(s);
height = Integer.parseInt(SHEIGHT.substring(HEIGHT.length()));
String SDEPTH = readln(s);
bands = Integer.parseInt(SDEPTH.substring(DEPTH.length()));
String SMAXVAL = readln(s);
dataType =
SMAXVAL.substring(MAXVAL.length()).equals("65535")
? DataBuffer.TYPE_USHORT
: DataBuffer.TYPE_BYTE;
// String STUPLTYPE = readln(s);
// String SENDHDR = readln(s);
imageData = new ImageData(width, height, bands, dataType);
} else return null;
int totalData = width * height * bands * (dataType == DataBuffer.TYPE_BYTE ? 1 : 2);
FileChannel c = s.getChannel();
if (file.length() != totalData + c.position()) {
c.close();
throw new BadImageFileException(file);
}
ByteBuffer bb = c.map(FileChannel.MapMode.READ_ONLY, c.position(), totalData);
if (dataType == DataBuffer.TYPE_USHORT) {
// bb.order(ByteOrder.BIG_ENDIAN);
bb.order(ByteOrder.nativeOrder());
bb.asShortBuffer().get((short[]) imageData.data);
// Darty hack to prevent crash on Arch Linux (issue #125)
if (ByteOrder.nativeOrder() != ByteOrder.BIG_ENDIAN)
for (int i = 0; i < ((short[]) imageData.data).length; ++i)
((short[]) imageData.data)[i] = Short.reverseBytes(((short[]) imageData.data)[i]);
} else bb.get((byte[]) imageData.data);
if (bb instanceof DirectBuffer) ((DirectBuffer) bb).cleaner().clean();
c.close();
} catch (Exception e) {
e.printStackTrace();
s.close();
throw new BadImageFileException(file, e);
} finally {
s.close();
}
return imageData;
}
