fixed empty org/ibex/translators files

[org.ibex.core.git] / src / org / ibex / translators / Freetype.java

diff --git a/src/org/ibex/translators/Freetype.java b/src/org/ibex/translators/Freetype.java
index e69de29..8131dfe 100644 (file)
--- a/src/org/ibex/translators/Freetype.java
+++ b/src/org/ibex/translators/Freetype.java
@@ -0,0 +1,67 @@
+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);
+        }
+    }
+}