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/*
* Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package com.sun.glass.ui.monocle;
import com.sun.glass.ui.Size;
import java.io.IOException;
import java.nio.Buffer;
import java.nio.ByteBuffer;
import java.nio.ByteOrder;
import java.nio.IntBuffer;
import java.nio.ShortBuffer;
/** Cursor using a framebuffer overlay on Freescale i.MX6. */
class MX6Cursor extends NativeCursor {
private int hotspotX;
private int hotspotY;
private int offsetX;
private int offsetY;
private int cursorX;
private int cursorY;
private static final int SHORT_KEY = 0xABAB;
private static final int CURSOR_WIDTH = 16;
private static final int CURSOR_HEIGHT = 16;
private Buffer cursorBuffer;
private Buffer offsetCursorBuffer;
private ByteBuffer offsetCursorByteBuffer;
private int screenWidth;
private int screenHeight;
private LinuxSystem system;
private MXCFBPos pos = new MXCFBPos();
private MXCFBGblAlpha alpha = new MXCFBGblAlpha();
private long fd = -1;
private static class MXCFBColorKey extends C.Structure {
private final IntBuffer data;
MXCFBColorKey() {
b.order(ByteOrder.nativeOrder());
data = b.asIntBuffer();
}
@Override
int sizeof() {
return 8;
}
void setEnable(int enable) {
data.put(0, enable);
}
void setColorKey(int key) {
data.put(1, key);
}
}
private static class MXCFBGblAlpha extends C.Structure {
private final IntBuffer data;
MXCFBGblAlpha() {
b.order(ByteOrder.nativeOrder());
data = b.asIntBuffer();
}
@Override
int sizeof() {
return 8;
}
void setEnable(int enable) {
data.put(0, enable);
}
void setAlpha(int alpha) {
data.put(1, alpha);
}
}
private static class MXCFBPos extends C.Structure {
private final ShortBuffer data;
MXCFBPos() {
b.order(ByteOrder.nativeOrder());
data = b.asShortBuffer();
}
@Override
int sizeof() {
return 4;
}
void set(int x, int y) {
data.put(0, (short) x);
data.put(1, (short) y);
}
}
MX6Cursor() {
try {
SysFS.write("/sys/class/graphics/fb1/blank", "0");
system = LinuxSystem.getLinuxSystem();
LinuxSystem.FbVarScreenInfo screen = new LinuxSystem.FbVarScreenInfo();
fd = system.open("/dev/fb1", LinuxSystem.O_RDWR);
if (fd == -1) {
throw new IOException(system.getErrorMessage());
}
system.ioctl(fd, LinuxSystem.FBIOGET_VSCREENINFO, screen.p);
screen.setRes(screen.p, CURSOR_WIDTH, CURSOR_HEIGHT);
screen.setVirtualRes(screen.p, CURSOR_WIDTH, CURSOR_HEIGHT);
screen.setOffset(screen.p, 0, 0);
screen.setActivate(screen.p, 0);
// set up cursor as 16-bit
screen.setBitsPerPixel(screen.p, 16);
screen.setRed(screen.p, 5, 11);
screen.setGreen(screen.p, 6, 5);
screen.setBlue(screen.p, 5, 0);
screen.setTransp(screen.p, 0, 0);
system.ioctl(fd, LinuxSystem.FBIOPUT_VSCREENINFO, screen.p);
system.ioctl(fd, LinuxSystem.FBIOBLANK, LinuxSystem.FB_BLANK_UNBLANK);
MXCFBColorKey key = new MXCFBColorKey();
key.setEnable(1);
key.setColorKey(((SHORT_KEY & 0xf800)<<8)
| ((SHORT_KEY & 0xe000)<<3)
| ((SHORT_KEY & 0x07e0)<<5)
| ((SHORT_KEY & 0x0600)>>1)
| ((SHORT_KEY & 0x001f)<<3)
| ((SHORT_KEY & 0x001c)>>2));
int MXCFB_SET_CLR_KEY = system.IOW('F', 0x22, key.sizeof());
if (system.ioctl(fd, MXCFB_SET_CLR_KEY, key.p) < 0) {
throw new IOException(system.strerror(system.errno()));
}
} catch (IOException e) {
if (fd != -1) {
LinuxSystem.getLinuxSystem().close(fd);
fd = -1;
}
e.printStackTrace();
System.err.println("Failed to initialize i.MX6 cursor");
}
NativeScreen screen = NativePlatformFactory.getNativePlatform().getScreen();
screenWidth = screen.getWidth();
screenHeight = screen.getHeight();
}
@Override
Size getBestSize() {
return new Size(CURSOR_WIDTH, CURSOR_HEIGHT);
}
@Override
void setVisibility(boolean visibility) {
alpha.setEnable(1);
alpha.setAlpha(visibility ? 255 : 0);
int MXCFB_SET_GBL_ALPHA = system.IOW('F', 0x21, alpha.sizeof());
system.ioctl(fd, MXCFB_SET_GBL_ALPHA, alpha.p);
isVisible = visibility;
updateImage(true);
}
private void updateImage(boolean always) {
if (isVisible && cursorBuffer != null) { //skip until cursor is fully initialized
int newOffsetX, newOffsetY;
newOffsetX = Math.max(0, CURSOR_WIDTH + cursorX - screenWidth);
newOffsetY = Math.max(0, CURSOR_HEIGHT + cursorY - screenHeight);
if (newOffsetX != offsetX || newOffsetY != offsetY || always) {
NativeCursors.offsetCursor(cursorBuffer, offsetCursorBuffer,
newOffsetX, newOffsetY,
CURSOR_WIDTH, CURSOR_HEIGHT,
16, SHORT_KEY);
offsetX = newOffsetX;
offsetY = newOffsetY;
system.lseek(fd, 0, LinuxSystem.SEEK_SET);
if (system.write(fd, offsetCursorByteBuffer,
0, offsetCursorByteBuffer.capacity()) < 0) {
System.err.println("Failed to write to i.MX6 cursor: "
+ system.getErrorMessage());
}
}
}
}
@Override
void setImage(byte[] cursorImage) {
// Convert the cursor to the color-keyed format
ByteBuffer bb = ByteBuffer.allocate(cursorImage.length);
cursorBuffer = bb.asShortBuffer();
NativeCursors.colorKeyCursor(cursorImage, cursorBuffer, 16, SHORT_KEY);
// Create an offset version of the cursor for rendering
offsetCursorByteBuffer = ByteBuffer.allocateDirect(cursorImage.length);
offsetCursorByteBuffer.order(ByteOrder.nativeOrder());
offsetCursorBuffer = offsetCursorByteBuffer.asShortBuffer();
updateImage(true);
}
@Override
void setLocation(int x, int y) {
cursorX = x;
cursorY = y;
updateImage(false);
pos.set(x, y);
int MXCFB_SET_OVERLAY_POS = system.IOWR('F', 0x24, pos.sizeof());
system.ioctl(fd, MXCFB_SET_OVERLAY_POS, pos.p);
}
@Override
void setHotSpot(int hotspotX, int hotspotY) {
this.hotspotX = hotspotX;
this.hotspotY = hotspotY;
}
@Override
void shutdown() {
setVisibility(false);
}
}
