Libretro: Fix frame limiting on the libretro core

Despite looking like frames were being limited, JBenchmark 2 pointed
out that it was still rendering over a thousand frames per second,
which meant tons of performance wasted since only 60 of those
were displayed... now it only really renders the required
amount of frames, just like AWT and SDL.

src/org/recompile/freej2me/Libretro.java

@@ -20,7 +20,6 @@
 
 import java.awt.Image;
 import java.awt.Canvas;
-import java.awt.Graphics;
 import java.awt.Graphics2D;
 import java.awt.image.BufferedImage;
 
@@ -159,7 +158,19 @@ public void run()
 			{
 				try
 				{
-					gc.drawImage(Mobile.getPlatform().getLCD(), 0, 0, lcdWidth, lcdHeight, null);
+					if(limitFPS>0)
+					{
+						requiredFrametime = 1000 / limitFPS;
+						elapsedTime = System.currentTimeMillis() - lastRenderTime;
+						sleepTime = requiredFrametime - elapsedTime;
+
+						if (sleepTime > 0) { Thread.sleep(sleepTime); }
+
+						gc.drawImage(Mobile.getPlatform().getLCD(), 0, 0, lcdWidth, lcdHeight, null);
+
+						lastRenderTime = System.currentTimeMillis();
+					} 
+					else { gc.drawImage(Mobile.getPlatform().getLCD(), 0, 0, lcdWidth, lcdHeight, null); }
 				}
 				catch (Exception e) { }
 			}
@@ -394,7 +405,7 @@ public void run()
 									// Send Frame Libretro //
 									try
 									{
-										int[] data;
+										final int[] data;
 
 										if(config.isRunning)
 										{
@@ -404,7 +415,7 @@ public void run()
 										{
 											data = surface.getRGB(0, 0, lcdWidth, lcdHeight, null, 0, lcdWidth);
 										}
-										int bufferLength = data.length*3;
+										final int bufferLength = data.length*3;
 										int cb = 0;
 										for(int i=0; i<data.length; i++)
 										{
@@ -418,28 +429,10 @@ public void run()
 										frameHeader[2] = (byte)((lcdWidth)&0xFF);
 										frameHeader[3] = (byte)((lcdHeight>>8)&0xFF);
 										frameHeader[4] = (byte)((lcdHeight)&0xFF);
-										//frameHeader[5] = rotate - set from config
-
-										if(limitFPS>0)
-										{
-											requiredFrametime = 1000 / limitFPS;
-											elapsedTime = System.currentTimeMillis() - lastRenderTime;
-											sleepTime = requiredFrametime - elapsedTime;
-
-											if (sleepTime > 0) { Thread.sleep(sleepTime); }
-
-											System.out.write(frameHeader, 0, 6);
-											System.out.write(frameBuffer, 0, bufferLength);
-											System.out.flush();
 
-											lastRenderTime = System.currentTimeMillis();
-										} 
-										else 
-										{
-											System.out.write(frameHeader, 0, 6);
-											System.out.write(frameBuffer, 0, bufferLength);
-											System.out.flush();
-										}
+										System.out.write(frameHeader, 0, 6);
+										System.out.write(frameBuffer, 0, bufferLength);
+										System.out.flush();
 									}
 									catch (Exception e)
 									{