| Methods Summary |
|---|
| public synchronized void | addConsumer(java.awt.image.ImageConsumer ic)
/* There is only a single consumer. When it registers, produce image. */
/* On error, notify consumer */
consumer = ic;
try {
produce();
} catch (Exception e) {
if (consumer != null)
consumer.imageComplete (ImageConsumer.IMAGEERROR);
}
consumer = null;
|
| public synchronized boolean | isConsumer(java.awt.image.ImageConsumer ic)
return (ic == consumer);
|
| private void | produce()
ColorModel cm = ColorModel.getRGBdefault();
if (consumer != null) {
if (loadError) {
consumer.imageComplete (ImageConsumer.IMAGEERROR);
} else {
consumer.setDimensions (width, height);
consumer.setProperties (props);
consumer.setColorModel (cm);
consumer.setHints (PpmHints);
for (int j=0;j<height;j++)
consumer.setPixels (0, j, width, 1, cm, store[j], 0, width);
consumer.imageComplete (ImageConsumer.STATICIMAGEDONE);
}
}
|
| public void | readImage(byte[] b)
readImage (new ByteArrayInputStream (b));
|
| public void | readImage(java.io.InputStream is)
long tm = System.currentTimeMillis();
boolean raw=false;
DataInputStream dis = null;
BufferedInputStream bis = null;
try {
bis = new BufferedInputStream (is);
dis = new DataInputStream (bis);
String word;
word = readWord (dis);
if ("P6".equals (word)) {
raw = true;
} else if ("P3".equals (word)) {
raw = false;
} else {
throw (new AWTException ("Invalid Format " + word));
}
width = Integer.parseInt (readWord (dis));
height = Integer.parseInt (readWord (dis));
// Could put comments in props - makes readWord more complex
int maxColors = Integer.parseInt (readWord (dis));
if ((maxColors < 0) || (maxColors > 255)) {
throw (new AWTException ("Invalid Colors " + maxColors));
}
store = new int[height][width];
if (raw) {
byte row[] = new byte [width*3];
for (int i=0;i<height;i++){
dis.readFully (row);
for (int j=0,k=0;j<width;j++,k+=3) {
int red = row[k];
int green = row[k+1];
int blue = row[k+2];
if (red < 0)
red +=256;
if (green < 0)
green +=256;
if (blue < 0)
blue +=256;
store[i][j] = (0xff<< 24) | (red << 16) | (green << 8) | blue;
}
}
} else {
for (int i=0;i<height;i++) {
for (int j=0;j<width;j++) {
int red = Integer.parseInt (readWord (dis));
int green = Integer.parseInt (readWord (dis));
int blue = Integer.parseInt (readWord (dis));
store[i][j] = (0xff<< 24) | (red << 16) | (green << 8) | blue;
}
}
}
} catch (IOException io) {
loadError = true;
System.out.println ("IO Exception " + io.getMessage());
} catch (AWTException awt) {
loadError = true;
System.out.println ("AWT Exception " + awt.getMessage());
} catch (NoSuchElementException nse) {
loadError = true;
System.out.println ("No Such Element Exception " + nse.getMessage());
} finally {
try {
if (dis != null)
dis.close();
if (bis != null)
bis.close();
if (is != null)
is.close();
} catch (IOException io) {
System.out.println ("IO Exception " + io.getMessage());
}
}
System.out.println ("Done in " + (System.currentTimeMillis() - tm) + " ms");
|
| private java.lang.String | readWord(java.io.InputStream is)
StringBuffer buf = new StringBuffer();
int b;
do { // get rid of leading whitespace
if ((b=is.read()) == -1)
throw new EOFException();
if ((char)b == '#") { // read to end of line - ppm comment
DataInputStream dis = new DataInputStream (is);
dis.readLine();
b = ' "; // ensure more reading
}
} while (Character.isSpace ((char)b));
do {
buf.append ((char)(b));
if ((b=is.read()) == -1)
throw new EOFException();
} while (!Character.isSpace ((char)b)); // reads first space
return buf.toString();
|
| public synchronized void | removeConsumer(java.awt.image.ImageConsumer ic)
if (consumer == ic)
consumer = null;
|
| public void | requestTopDownLeftRightResend(java.awt.image.ImageConsumer ic)
// Not needed. The data is always in this format.
|
| public void | startProduction(java.awt.image.ImageConsumer ic)
addConsumer (ic);
|
