Shorten FRAMEBUFFER_PROPERTY to FRAMEBUFFER; Implement base support for framebuffers.

bldt/javase/libs/javase-runtime/cc/squirreljme/jvm/Assembly.java

@@ -1760,7 +1760,7 @@ public final class Assembly
 						case SystemCallIndex.ERROR_GET:
 						case SystemCallIndex.ERROR_SET:
 						case SystemCallIndex.EXIT:
-						case SystemCallIndex.FRAMEBUFFER_PROPERTY:
+						case SystemCallIndex.FRAMEBUFFER:
 						case SystemCallIndex.IPC_CALL:
 						case SystemCallIndex.GARBAGE_COLLECT:
 						case SystemCallIndex.LOAD_STRING:
@@ -1912,7 +1912,7 @@ public final class Assembly
 				break;
 				
 				// Property of the framebuffer
-			case SystemCallIndex.FRAMEBUFFER_PROPERTY:
+			case SystemCallIndex.FRAMEBUFFER:
 				try
 				{
 					rv = SwingFramebuffer.instance().vfb.framebufferProperty(

ratufacoat/sjmecon.h

@@ -616,8 +616,11 @@ extern "C"
 /** Upload integer array. */
 #define SJME_FRAMEBUFFER_PROPERTY_UPLOAD_ARRAY_INT SJME_JINT_C(14)
 
+/** The backing object for the framebuffer, if there is one. */
+#define SJME_FRAMEBUFFER_PROPERTY_BACKING_ARRAY_OBJECT SJME_JINT_C(15)
+
 /** Maximum properties. */
-#define SJME_FRAMEBUFFER_PROPERTY_NUM_PROPERTIES SJME_JINT_C(15)
+#define SJME_FRAMEBUFFER_PROPERTY_NUM_PROPERTIES SJME_JINT_C(16)
 
 /*****************************************************************************
 *************************** SUPERVISOR PROPERTIES ****************************

runt/apis/cldc-compact/cc/squirreljme/jvm/FramebufferProperty.java

@@ -127,9 +127,18 @@ public interface FramebufferProperty
 	public static final byte UPLOAD_ARRAY_INT =
 		14;
 	
+	/**
+	 * The array which backs the framebuffer, if there is one.
+	 *
+	 * @return The backing array object, if there is one.
+	 * @since 2019/12/28
+	 */
+	public static final byte BACKING_ARRAY_OBJECT =
+		15;
+	
 	/** The number of framebuffer properties. */
 	public static final byte NUM_PROPERTIES =
-		15;
+		16;
 	
 	/** Screen is RGB 32-bit. */
 	public static final byte FORMAT_INTEGER_RGB888 =

runt/apis/cldc-compact/cc/squirreljme/jvm/SystemCallIndex.java

@@ -269,7 +269,7 @@ public interface SystemCallIndex
 	 * @param ... Undefined, this depends on the property selected.
 	 * @return Whatever value the frame buffer property will return.
 	 */
-	public static final byte FRAMEBUFFER_PROPERTY =
+	public static final byte FRAMEBUFFER =
 		24;
 	
 	/**

runt/apis/midp-lcdui/cc/squirreljme/runtime/lcdui/vfb/VirtualFramebuffer.java

@@ -9,6 +9,8 @@
 
 package cc.squirreljme.runtime.lcdui.vfb;
 
+import cc.squirreljme.jvm.Assembly;
+import cc.squirreljme.jvm.FramebufferProperty;
 import cc.squirreljme.jvm.IPCCallback;
 
 /**
@@ -30,6 +32,15 @@ public final class VirtualFramebuffer
 	/** The callback to invoke with screen actions. */
 	protected final IPCCallback ipc;
 	
+	/** The width. */
+	protected final int width;
+	
+	/** The height. */
+	protected final int height;
+	
+	/** The raw pixel data. */
+	protected final int[] pixels;
+	
 	/**
 	 * Initializes the virtual framebuffer.
 	 *
@@ -39,12 +50,33 @@ public final class VirtualFramebuffer
 	 */
 	public VirtualFramebuffer(IPCCallback __ipc)
 		throws NullPointerException
+	{
+		this(__ipc, DEFAULT_WIDTH, DEFAULT_HEIGHT);
+	}
+	
+	/**
+	 * Initializes the virtual framebuffer.
+	 *
+	 * @param __ipc The callback to forward events to.
+	 * @param __w The width.
+	 * @param __h The height.
+	 * @throws NullPointerException On null arguments.
+	 * @since 2019/12/28
+	 */
+	public VirtualFramebuffer(IPCCallback __ipc, int __w, int __h)
 	{
 		if (__ipc == null)
 			throw new NullPointerException("NARG");
 		
 		// Set IPC to use
 		this.ipc = __ipc;
+		
+		// Set size
+		this.width = __w;
+		this.height = __h;
+		
+		// Initialize raw pixel data
+		this.pixels = new int[__w * __h];
 	}
 	
 	/**
@@ -151,7 +183,64 @@ public final class VirtualFramebuffer
 	public final long framebufferProperty(int __pid, int __a, int __b, int __c,
 		int __d, int __e, int __g, int __h)
 	{
-		throw new todo.TODO();
+		// Depends on the property
+		switch (__pid)
+		{
+				// Raw address (since it is simulated, this is not set)
+			case FramebufferProperty.ADDRESS:
+				return 0;
+				
+				// Width and scanline length
+			case FramebufferProperty.WIDTH:
+			case FramebufferProperty.SCANLEN:
+				return this.width;
+				
+				// Height
+			case FramebufferProperty.HEIGHT:
+				return this.height;
+			
+				// Flushes the display
+			case FramebufferProperty.FLUSH:
+				throw new todo.TODO();
+				
+				// Pixel format is always integer
+			case FramebufferProperty.FORMAT:
+				return FramebufferProperty.FORMAT_INTEGER_RGB888;
+				
+				// Scan line length in bytes
+			case FramebufferProperty.SCANLEN_BYTES:
+				return this.width * 4;
+				
+				// The number of bytes per pixel
+			case FramebufferProperty.BYTES_PER_PIXEL:
+				return 4;
+				
+				// Bits per pixel
+			case FramebufferProperty.BITS_PER_PIXEL:
+				return 32;
+				
+				// The number of pixels
+			case FramebufferProperty.NUM_PIXELS:
+				return this.width * this.height;
+				
+				// Backlight not supported
+			case FramebufferProperty.BACKLIGHT_LEVEL_GET:
+			case FramebufferProperty.BACKLIGHT_LEVEL_SET:
+			case FramebufferProperty.BACKLIGHT_LEVEL_MAX:
+				return 0;
+				
+				// Upload integer array
+			case FramebufferProperty.UPLOAD_ARRAY_INT:
+				throw new todo.TODO();
+				
+				// The backing array object
+			case FramebufferProperty.BACKING_ARRAY_OBJECT:
+				return Assembly.objectToPointer(this.pixels);
+				
+				// Unknown
+			default:
+				return 0;
+		}
 	}
 }
 

runt/apis/midp-lcdui/com/nokia/mid/ui/DeviceControl.java

@@ -67,14 +67,14 @@ public class DeviceControl
 		// Get maximum backlight level, stop if it is zero which means the
 		// property is not supported or there is no backlight that can be
 		// controlled
-		int max = Assembly.sysCallV(SystemCallIndex.FRAMEBUFFER_PROPERTY,
+		int max = Assembly.sysCallV(SystemCallIndex.FRAMEBUFFER,
 			FramebufferProperty.BACKLIGHT_LEVEL_MAX);
 		if (max == 0)
 			return;
 		
 		// Set the desired level as a percentage of the max
 		int val = (max * __lvl) / 100;
-		Assembly.sysCall(SystemCallIndex.FRAMEBUFFER_PROPERTY,
+		Assembly.sysCall(SystemCallIndex.FRAMEBUFFER,
 			FramebufferProperty.BACKLIGHT_LEVEL_SET,
 			(val < 0 ? 0 : (val > max ? max : val)));
 	}

runt/apis/midp-lcdui/javax/microedition/lcdui/Display.java

@@ -1311,11 +1311,14 @@ public class Display
 		synchronized (displays)
 		{
 			// Try to obtain the address of the framebuffer
-			int fbaddr = Assembly.sysCallV(SystemCallIndex.
-				FRAMEBUFFER_PROPERTY, FramebufferProperty.ADDRESS);
+			int fbaddr = Assembly.sysCallV(SystemCallIndex.FRAMEBUFFER,
+				FramebufferProperty.ADDRESS);
+			int fbaobj = Assembly.sysCallV(SystemCallIndex.FRAMEBUFFER,
+				FramebufferProperty.BACKING_ARRAY_OBJECT);
 			
 			// There is only a single display if a framebuffer is supported
-			int numdisplays = (fbaddr != 0 ? 1 : 0);
+			// It could be mapped to an object or otherwise raw memory
+			int numdisplays = (fbaddr != 0 || fbaobj != 0 ? 1 : 0);
 			for (int i = 0; i < numdisplays; i++)
 				rv.add(Display.__mapDisplay(i));
 		}

runt/klib/supervisor/cc/squirreljme/jvm/FramebufferProperty.java

@@ -127,9 +127,18 @@ public interface FramebufferProperty
 	public static final byte UPLOAD_ARRAY_INT =
 		14;
 	
+	/**
+	 * The array which backs the framebuffer, if there is one.
+	 *
+	 * @return The backing array object, if there is one.
+	 * @since 2019/12/28
+	 */
+	public static final byte BACKING_ARRAY_OBJECT =
+		15;
+	
 	/** The number of framebuffer properties. */
 	public static final byte NUM_PROPERTIES =
-		15;
+		16;
 	
 	/** Screen is RGB 32-bit. */
 	public static final byte FORMAT_INTEGER_RGB888 =

runt/klib/supervisor/cc/squirreljme/jvm/SystemCallIndex.java

@@ -269,7 +269,7 @@ public interface SystemCallIndex
 	 * @param ... Undefined, this depends on the property selected.
 	 * @return Whatever value the frame buffer property will return.
 	 */
-	public static final byte FRAMEBUFFER_PROPERTY =
+	public static final byte FRAMEBUFFER =
 		24;
 	
 	/**