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/*
* Copyright (c) 2010, 2016, 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;
import java.lang.annotation.Native;
import java.nio.Buffer;
import java.nio.ByteBuffer;
import java.nio.IntBuffer;
import java.nio.ByteOrder;
/**
* The object wraps the given raw pixels data.
*
* Pixels class is NOT thread safe.
*/
public abstract class Pixels {
/**
* The Format specifies the native byte order of the
* underlying chunk of image data.
* The data may be either INTs or BYTEs depending on
* the constructor used.
* The format ABCD implies the following byte order:
* BYTE[0] = A
* BYTE[1] = B
* BYTE[2] = C
* BYTE[3] = D
* BYTE[4] = A
* ...
* Calling code should take care of endianness of the platform
* when passing image data as ints.
*/
public static class Format {
@Native public static final int BYTE_BGRA_PRE = 1;
@Native public static final int BYTE_ARGB = 2;
}
public static int getNativeFormat() {
Application.checkEventThread();
return Application.GetApplication().staticPixels_getNativeFormat();
}
// Need:
// Clipboard:
// public Pixels(final int width, final int height, final byte[] data)
//
// Robot:
// public Pixels(final int width, final int height, final int[] data)
//
// PixelUtils == Prism == GlassToolkit :
// public Pixels(final int width, final int height, final ByteBuffer)
// public Pixels(final int width, final int height, final IntBuffer)
// The following fields are safe to be protected, since they are final
protected final int width;
protected final int height;
protected final int bytesPerComponent;
// The following fields are safe to be protected, since they are final
protected final ByteBuffer bytes;
protected final IntBuffer ints;
private final float scalex;
private final float scaley;
protected Pixels(final int width, final int height, final ByteBuffer pixels) {
this.width = width;
this.height = height;
this.bytesPerComponent = 1;
this.bytes = pixels.slice();
if ((this.width <= 0) || (this.height <= 0) || ((this.width * this.height * 4) > this.bytes.capacity())) {
throw new IllegalArgumentException("Too small byte buffer size "+this.width+"x"+this.height+" ["+(this.width*this.height*4)+"] > "+this.bytes.capacity());
}
this.ints = null;
this.scalex = 1.0f;
this.scaley = 1.0f;
}
protected Pixels(final int width, final int height, IntBuffer pixels) {
this.width = width;
this.height = height;
this.bytesPerComponent = 4;
this.ints = pixels.slice();
if ((this.width <= 0) || (this.height <= 0) || ((this.width * this.height) > this.ints.capacity())) {
throw new IllegalArgumentException("Too small int buffer size "+this.width+"x"+this.height+" ["+(this.width*this.height)+"] > "+this.ints.capacity());
}
this.bytes = null;
this.scalex = 1.0f;
this.scaley = 1.0f;
}
protected Pixels(final int width, final int height, IntBuffer pixels, float scalex, float scaley) {
this.width = width;
this.height = height;
this.bytesPerComponent = 4;
this.ints = pixels.slice();
if ((this.width <= 0) || (this.height <= 0) || ((this.width * this.height) > this.ints.capacity())) {
throw new IllegalArgumentException("Too small int buffer size "+this.width+"x"+this.height+" ["+(this.width*this.height)+"] > "+this.ints.capacity());
}
this.bytes = null;
this.scalex = scalex;
this.scaley = scaley;
}
public final float getScaleX() {
Application.checkEventThread();
return this.scalex;
}
public final float getScaleY() {
Application.checkEventThread();
return this.scaley;
}
public final float getScaleXUnsafe() {
return this.scalex;
}
public final float getScaleYUnsafe() {
return this.scaley;
}
public final int getWidth() {
Application.checkEventThread();
return this.width;
}
public final int getWidthUnsafe() {
return this.width;
}
public final int getHeight() {
Application.checkEventThread();
return this.height;
}
public final int getHeightUnsafe() {
return this.height;
}
public final int getBytesPerComponent() {
Application.checkEventThread();
return this.bytesPerComponent;
}
/*
* Return the original pixels buffer.
*/
public final Buffer getPixels() {
if (this.bytes != null) {
this.bytes.rewind();
return this.bytes;
} else if (this.ints != null) {
this.ints.rewind();
return this.ints;
} else {
throw new RuntimeException("Unexpected Pixels state.");
}
}
/*
* Return a copy of pixels as bytes.
*/
public final ByteBuffer asByteBuffer() {
Application.checkEventThread();
ByteBuffer bb = ByteBuffer.allocateDirect(getWidth()*getHeight()*4);
bb.order(ByteOrder.nativeOrder());
bb.rewind();
asByteBuffer(bb);
return bb;
}
/*
* Copy pixels into provided byte buffer.
* The ByteBuffer must be direct.
*/
public final void asByteBuffer(ByteBuffer bb) {
Application.checkEventThread();
if (!bb.isDirect()) {
throw new RuntimeException("Expected direct buffer.");
} else if (bb.remaining() < (getWidth()*getHeight()*4)) {
throw new RuntimeException("Too small buffer.");
}
_fillDirectByteBuffer(bb);
}
// This method is called from the native code to reduce the number of JNI up-calls.
private void attachData(long ptr) {
if (this.ints != null) {
int[] array = !this.ints.isDirect() ? this.ints.array() : null;
_attachInt(ptr, this.width, this.height, this.ints, array, array != null ? this.ints.arrayOffset() : 0);
}
if (this.bytes != null) {
byte[] array = !this.bytes.isDirect() ? this.bytes.array() : null;
_attachByte(ptr, this.width, this.height, this.bytes, array, array != null ? this.bytes.arrayOffset() : 0);
}
}
protected abstract void _fillDirectByteBuffer(ByteBuffer bb);
protected abstract void _attachInt(long ptr, int w, int h, IntBuffer ints, int[] array, int offset);
protected abstract void _attachByte(long ptr, int w, int h, ByteBuffer bytes, byte[] array, int offset);
@Override public final boolean equals(Object object) {
Application.checkEventThread();
boolean equals = ((object != null) && (getClass().equals(object.getClass())));
if (equals) {
Pixels pixels = (Pixels)object;
equals = ((getWidth() == pixels.getWidth()) && (getHeight() == pixels.getHeight()));
if (equals) {
ByteBuffer b1 = asByteBuffer();
ByteBuffer b2 = pixels.asByteBuffer();
equals = (b1.compareTo(b2) == 0);
}
}
return equals;
}
@Override public final int hashCode() {
Application.checkEventThread();
int val = getWidth();
val = 31*val + getHeight();
val = 17*val + asByteBuffer().hashCode();
return val;
}
}
