1 // PpmEncoder - write out an image as a PPM
3 // Copyright (C)1996,1998 by Jef Poskanzer <jef@mail.acme.com>. All rights reserved.
5 // Redistribution and use in source and binary forms, with or without
6 // modification, are permitted provided that the following conditions
8 // 1. Redistributions of source code must retain the above copyright
9 // notice, this list of conditions and the following disclaimer.
10 // 2. Redistributions in binary form must reproduce the above copyright
11 // notice, this list of conditions and the following disclaimer in the
12 // documentation and/or other materials provided with the distribution.
14 // THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 // ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 // IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 // ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 // FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 // DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 // OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 // HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 // LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 // OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 // Visit the ACME Labs Java page for up-to-date versions of this and other
27 // fine Java utilities: http://www.acme.com/java/
35 * see http://netpbm.sourceforge.net/doc/ppm.html
37 public class PpmEncoder extends ImageEncoder {
40 protected void setParams(Map<String, Object> params) {
45 protected void generate() {
47 putString(width + " " + height + "\n");
49 byte[] ppmPixels = new byte[width * 3];
50 for (int pt = 0, row = 0; row < height; ++row) {
51 for (int col = 0, j = 0; col < width; ++col, pt++) {
53 ppmPixels[j++] = (byte) ((p >> 16) & 0xff);
54 ppmPixels[j++] = (byte) ((p >> 8) & 0xff);
55 ppmPixels[j++] = (byte) (p & 0xff);
57 out.write(ppmPixels, 0, ppmPixels.length);