+package org.ibex.translators;
+import org.ibex.*;
+import org.ibex.util.*;
+import java.io.*;
+import java.util.zip.*;
+import java.util.*;
+import org.bouncycastle.util.encoders.Base64;
+
+import org.xwt.mips.Runtime;
+
+// FEATURE: use streams, not memoryfont's
+// FEATURE: kerning pairs
+public class Freetype {
+
+ public Freetype() { }
+
+ private int mem_allocated = 0;
+ private Runtime vm = null;
+
+ private Stream loadedStream = null;
+
+ public void loadFontByteStream(Stream res) {
+ try {
+ Log.info(this, "loading font " + res);
+ loadedStream = res;
+ InputStream is = Stream.getInputStream(res);
+ byte[] fontstream = InputStreamToByteArray.convert(is);
+ vm = (Runtime)Class.forName("org.ibex.translators.MIPSApps").newInstance();
+ int baseAddr = vm.sbrk(fontstream.length);
+ vm.copyout(fontstream, baseAddr, fontstream.length);
+ vm.setUserInfo(0, baseAddr);
+ vm.setUserInfo(1, fontstream.length);
+ vm.start(new String[]{ "freetype" });
+ vm.execute();
+ if(vm.getState() == Runtime.DONE) throw new Error("Freetype VM exited: " + vm.exitStatus());
+ } catch (Exception e) {
+ Log.info(this, e);
+ }
+ }
+
+ public synchronized void renderGlyph(Font.Glyph glyph) throws IOException {
+ try {
+ Log.debug(this, "rasterizing glyph " + glyph.c + " of font " + glyph.font);
+ if (loadedStream != glyph.font.stream) loadFontByteStream(glyph.font.stream);
+ vm.setUserInfo(2, (int)glyph.c);
+ vm.setUserInfo(3, (int)glyph.c);
+ vm.setUserInfo(4, glyph.font.pointsize);
+ long start = System.currentTimeMillis();
+ vm.execute();
+ glyph.font.max_ascent = vm.getUserInfo(8);
+ glyph.font.max_descent = vm.getUserInfo(9);
+ glyph.baseline = vm.getUserInfo(10);
+ glyph.advance = vm.getUserInfo(11);
+
+ glyph.width = vm.getUserInfo(6);
+ glyph.height = vm.getUserInfo(7);
+
+ glyph.data = new byte[glyph.width * glyph.height];
+ int addr = vm.getUserInfo(5);
+ vm.copyin(addr, glyph.data, glyph.width * glyph.height);
+ glyph.isLoaded = true;
+
+ } catch (Exception e) {
+ Log.info(this, e);
+ }
+ }
+}