1 package org.xwt.translators;
2 import org.xwt.*;
3 import org.xwt.util.*;
4 import java.io.*;
5 import java.util.zip.*;
6 import java.util.*;
7 import org.bouncycastle.util.encoders.Base64;
8
9 import org.xwt.mips.Runtime;
10
11
12
13 public class Freetype {
14
15 public Freetype() { }
16
17 private int mem_allocated = 0;
18 private Runtime vm = null;
19
20 private Stream loadedStream = null;
21
22 public void loadFontByteStream(Stream res) {
23 try {
24 Log.info(this, "loading font " + res);
25 loadedStream = res;
26 InputStream is = Stream.getInputStream(res);
27 byte[] fontstream = InputStreamToByteArray.convert(is);
28 vm = (Runtime)Class.forName("org.xwt.translators.MIPSApps").newInstance();
29 int baseAddr = vm.sbrk(fontstream.length);
30 vm.copyout(fontstream, baseAddr, fontstream.length);
31 vm.setUserInfo(0, baseAddr);
32 vm.setUserInfo(1, fontstream.length);
33 vm.start(new String[]{ "freetype" });
34 vm.execute();
35 if(vm.getState() == Runtime.DONE) throw new Error("Freetype VM exited: " + vm.exitStatus());
36 } catch (Exception e) {
37 Log.info(this, e);
38 }
39 }
40
41 public synchronized void renderGlyph(Font.Glyph glyph) throws IOException {
42 try {
43 if (loadedStream != glyph.font.stream) loadFontByteStream(glyph.font.stream);
44 vm.setUserInfo(2, (int)glyph.c);
45 vm.setUserInfo(3, (int)glyph.c);
46 vm.setUserInfo(4, glyph.font.pointsize);
47 long start = System.currentTimeMillis();
48 vm.execute();
49 glyph.font.max_ascent = vm.getUserInfo(8);
50 glyph.font.max_descent = vm.getUserInfo(9);
51 glyph.baseline = vm.getUserInfo(10);
52 glyph.advance = vm.getUserInfo(11);
53
54 glyph.width = vm.getUserInfo(6);
55 glyph.height = vm.getUserInfo(7);
56
57 glyph.data = new byte[glyph.width * glyph.height];
58 int addr = vm.getUserInfo(5);
59 vm.copyin(addr, glyph.data, glyph.width * glyph.height);
60 glyph.isLoaded = true;
61
62 } catch (Exception e) {
63 Log.info(this, e);
64 }
65 }
66 }
67