From 7a2e20caac9db6f789a7b3fab344b9758af45335 Mon Sep 17 00:00:00 2001 From: Harvey Harrison Date: Sun, 19 Apr 2015 21:02:06 -0700 Subject: j3dcore: flatten the directory structure a bit Signed-off-by: Harvey Harrison --- src/javax/media/j3d/NioImageBuffer.java | 393 ++++++++++++++++++++++++++++++++ 1 file changed, 393 insertions(+) create mode 100644 src/javax/media/j3d/NioImageBuffer.java (limited to 'src/javax/media/j3d/NioImageBuffer.java') diff --git a/src/javax/media/j3d/NioImageBuffer.java b/src/javax/media/j3d/NioImageBuffer.java new file mode 100644 index 0000000..899b45a --- /dev/null +++ b/src/javax/media/j3d/NioImageBuffer.java @@ -0,0 +1,393 @@ +/* + * Copyright 2006-2008 Sun Microsystems, Inc. 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. Sun designates this + * particular file as subject to the "Classpath" exception as provided + * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, + * CA 95054 USA or visit www.sun.com if you need additional information or + * have any questions. + * + */ + +package javax.media.j3d; + +import java.nio.Buffer; +import java.nio.ByteBuffer; +import java.nio.ByteOrder; +import java.nio.IntBuffer; + +/** + * The NioImageBuffer class is a container for an image whose DataBuffer + * is specified via a java.nio.Buffer. An an NioImageBuffer can be wrapped by + * an ImageComponent and used for texture mapping, or for rendering Raster + * objects or background images. An NioImageBuffer must not be used as the + * buffer of an off-screen Canvas3D, or for reading back a raster image. + * + * @see ImageComponent2D + * @see ImageComponent3D + * + * @since Java 3D 1.5 + */ +public class NioImageBuffer { + + /** + * Used to specify the type of the image. + */ + public enum ImageType { + /** + * Represents an image with 8-bit RGB color components, + * corresponding to a Windows-style BGR color model, with the + * colors Blue, Green, and Red stored in 3 consecutive + * bytes for each pixel. + * The data buffer must be a ByteBuffer when using this imageType. + */ + TYPE_3BYTE_BGR, + + /** + * Represents an image with 8-bit RGB color components with + * Red, Green, and Blue, stored in 3 consecutive + * bytes for each pixel. + * The data buffer must be a ByteBuffer when using this imageType. + */ + TYPE_3BYTE_RGB, + + /** + * Represents an image with 8-bit RGBA color components with + * Alpha, Blue, Green, and Red stored in 4 consecutive + * bytes for each pixel. + * The data buffer must be a ByteBuffer when using this imageType. + */ + TYPE_4BYTE_ABGR, + + /** + * Represents an image with 8-bit RGBA color components with + * Red, Green, Blue, and Alpha stored in 4 consecutive + * bytes for each pixel. + * The data buffer must be a ByteBuffer when using this imageType. + */ + TYPE_4BYTE_RGBA, + + /** + * Represents a unsigned byte grayscale image, non-indexed. + * The data buffer must be a ByteBuffer when using this imageType. + */ + TYPE_BYTE_GRAY, + + /** + * Represents an image with 8-bit RGBA color components packed + * into integer pixels. + * The data buffer must be an IntBuffer when using this imageType. + */ + TYPE_INT_ARGB, + + /** + * Represents an image with 8-bit RGB color components, + * corresponding to a Windows- or Solaris- style BGR color model, + * with the colors Blue, Green, and Red packed into integer + * pixels. + * The data buffer must be an IntBuffer when using this imageType. + */ + TYPE_INT_BGR, + + /** + * Represents an image with 8-bit RGB color components packed into + * integer pixels. + * The data buffer must be an IntBuffer when using this imageType. + */ + TYPE_INT_RGB, + + } + + + /** + * Enum for type of buffer + */ + enum BufferType { + BYTE_BUFFER, + INT_BUFFER, + } + + + // Width and height of image + int width; + int height; + + // TYpe of image + ImageType imageType; + + // Cached buffer + Buffer buffer; + + // Type of NIO Buffer: byte or int + BufferType bufferType; + + // Number of bytes allocated per pixel + int bytesPerPixel; + + // Number of byte or int elements per pixel + int elementsPerPixel; + + /** + * Constructs an NIO image buffer of the specified size and type. + * A direct NIO buffer of the correct type (ByteBuffer or IntBuffer) + * and size to match the input parameters + * is allocated. + * + * @param width width of the image + * @param height height of the image + * @param imageType type of the image. + * + * @exception IllegalArgumentException if width < 1 or height < 1 + * @exception NullPointerException if imageType is null + */ + public NioImageBuffer(int width, int height, ImageType imageType) { + + processParams(width, height, imageType); + + ByteBuffer tmpBuffer = ByteBuffer.allocateDirect(width * height * bytesPerPixel); + switch (bufferType) { + case BYTE_BUFFER: + buffer = tmpBuffer; + break; + + case INT_BUFFER: + buffer = tmpBuffer.order(ByteOrder.nativeOrder()).asIntBuffer(); + break; + + default: + // We should never get here + throw new AssertionError("missing case statement"); + } + } + + /** + * Constructs an NIO image buffer of the specified size and type, using + * the specified dataBuffer. + * The the byte order of the specified dataBuffer must match the native + * byte order of the underlying platform. + * For best performance, the NIO buffer should be a direct buffer. + * + * @param width width of the image + * @param height height of the image + * @param imageType type of the image. + * @param dataBuffer an NIO buffer of the correct type (ByteBuffer or + * IntBuffer) to match the specified imageType. + * This constructor will create a new view of + * the buffer, and will call rewind on that view, + * such that elements 0 through dataBuffer.limit()-1 + * will be available internally. The number of elements in + * the buffer must be exactly width*height*numElementsPerPixel, + * where numElementsPerPixel is + * 3 for TYPE_3BYTE_BGR and TYPE_3BYTE_RGB, + * 4 for TYPE_4BYTE_ABGR and TYPE_4BYTE_RGBA, + * and 1 for all other types. + * + * @exception IllegalArgumentException if width < 1 or height < 1 + * @exception NullPointerException if imageType or dataBuffer is null + * @exception IllegalArgumentException if the type of the dataBuffer does + * not match the imageType + * @exception IllegalArgumentException if dataBuffer.limit() != + * width*height*numElementsPerPixel + * @exception IllegalArgumentException if the byte order of the specified + * dataBuffer does not match the native byte order of the underlying + * platform. + */ + public NioImageBuffer(int width, int height, ImageType imageType, + Buffer dataBuffer) { + + processParams(width, height, imageType); + setDataBuffer(dataBuffer); + } + + /** + * Gets the width of this data buffer. + * + * @return the width of this data buffer. + */ + public int getWidth() { + return width; + } + + /** + * Gets the height of this data buffer. + * + * @return the width of this data buffer. + */ + public int getHeight() { + return height; + } + + /** + * Gets the image type of this data buffer. + * + * @return the image type of this data buffer. + */ + public ImageType getImageType() { + return imageType; + } + + /** + * Sets the data buffer to the specified input data buffer. + * The the byte order of the specified dataBuffer must match the native + * byte order of the underlying platform. + * For best performance, the NIO buffer should be a direct buffer. + * + * @param dataBuffer an NIO buffer of the correct type (ByteBuffer or + * IntBuffer) to match the imageType of this + * NioImageBuffer. This method will create a new view of + * the buffer, and will call rewind on that view, + * such that elements 0 through dataBuffer.limit()-1 + * will be available internally. The number of elements in + * the buffer must be exactly width*height*numElementsPerPixel, + * where numElementsPerPixel is + * 3 for TYPE_3BYTE_BGR and TYPE_3BYTE_RGB, + * 4 for TYPE_4BYTE_ABGR and TYPE_4BYTE_RGBA, + * and 1 for all other types. + * + * @exception NullPointerException if dataBuffer is null + * @exception IllegalArgumentException if the type of the dataBuffer does + * not match the imageType + * @exception IllegalArgumentException if dataBuffer.limit() != + * width*height*numElementsPerPixel + * @exception IllegalArgumentException if the byte order of the specified + * dataBuffer does not match the native byte order of the underlying + * platform. + */ + public void setDataBuffer(Buffer dataBuffer) { + if (dataBuffer == null) { + throw new NullPointerException(); + } + + if (dataBuffer.limit() != width*height*elementsPerPixel) { + throw new IllegalArgumentException(J3dI18N.getString("NioImageBuffer3")); + } + + switch (bufferType) { + case BYTE_BUFFER: + if (!(dataBuffer instanceof ByteBuffer)) { + throw new IllegalArgumentException(J3dI18N.getString("NioImageBuffer4")); + } + buffer = ((ByteBuffer)dataBuffer).duplicate().rewind(); + break; + + case INT_BUFFER: + if (!(dataBuffer instanceof IntBuffer)) { + throw new IllegalArgumentException(J3dI18N.getString("NioImageBuffer4")); + } + + if (((IntBuffer)dataBuffer).order() != ByteOrder.nativeOrder()) { + throw new IllegalArgumentException(J3dI18N.getString("NioImageBuffer5")); + } + buffer = ((IntBuffer)dataBuffer).duplicate().rewind(); + break; + + default: + // We should never get here + throw new AssertionError("missing case statement"); + } + } + + /** + * Gets the data buffer to the specified input data buffer. + * + * @return a view of the current data buffer for this NIO image buffer. + * This view will be rewound such that elements 0 + * through dataBuffer.limit()-1 are available. + */ + public Buffer getDataBuffer() { + Buffer tmpBuffer = null; + + switch (bufferType) { + case BYTE_BUFFER: + tmpBuffer = ((ByteBuffer)buffer).duplicate(); + break; + + case INT_BUFFER: + tmpBuffer = ((IntBuffer)buffer).duplicate(); + break; + + default: + // We should never get here + throw new AssertionError("missing case statement"); + } + + return tmpBuffer.rewind(); + } + + + // Sanity check the input parameters, calculate the buffer type and + // the number of bytes per pixel + private void processParams(int width, int height, ImageType imageType) { + if (width < 1) { + throw new IllegalArgumentException(J3dI18N.getString("NioImageBuffer0")); + } + + if (height < 1) { + throw new IllegalArgumentException(J3dI18N.getString("NioImageBuffer1")); + } + + switch (imageType) { + case TYPE_3BYTE_BGR: + bufferType = BufferType.BYTE_BUFFER; + bytesPerPixel = 3; + elementsPerPixel = 3; + break; + + case TYPE_3BYTE_RGB: + bufferType = BufferType.BYTE_BUFFER; + bytesPerPixel = 3; + elementsPerPixel = 3; + break; + + case TYPE_4BYTE_ABGR: + bufferType = BufferType.BYTE_BUFFER; + bytesPerPixel = 4; + elementsPerPixel = 4; + break; + + case TYPE_4BYTE_RGBA: + bufferType = BufferType.BYTE_BUFFER; + bytesPerPixel = 4; + elementsPerPixel = 4; + break; + + case TYPE_BYTE_GRAY: + bufferType = BufferType.BYTE_BUFFER; + bytesPerPixel = 1; + elementsPerPixel = 1; + break; + + case TYPE_INT_ARGB: + case TYPE_INT_BGR: + case TYPE_INT_RGB: + bufferType = BufferType.INT_BUFFER; + bytesPerPixel = 4; + elementsPerPixel = 1; + break; + + default: + // We should never get here + throw new AssertionError("missing case statement"); + } + + this.width = width; + this.height = height; + this.imageType = imageType; + } + +} -- cgit v1.2.3