projects/dwt2: org.eclipse.swt.win32.win32.x86/src/org/eclipse/swt/internal/image/OS2BMPFileFormat.d annotate

author	Frank Benoit <benoit@tionex.de>
date	Mon, 02 Mar 2009 14:44:16 +0100
parents
children	f36c67707cb3

rev	line source
0 6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	1 /*******************************************************************************
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	2 * Copyright (c) 2000, 2008 IBM Corporation and others.
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	3 * All rights reserved. This program and the accompanying materials
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	4 * are made available under the terms of the Eclipse Public License v1.0
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	5 * which accompanies this distribution, and is available at
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	6 * http://www.eclipse.org/legal/epl-v10.html
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	7 *
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	8 * Contributors:
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	9 * IBM Corporation - initial API and implementation
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	10 * Port to the D programming language:
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	11 * Frank Benoit <benoit@tionex.de>
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	12 *******************************************************************************/
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	13 module org.eclipse.swt.internal.image.OS2BMPFileFormat;
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	14
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	15 import org.eclipse.swt.SWT;
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	16 import org.eclipse.swt.graphics.ImageData;
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	17 import org.eclipse.swt.graphics.ImageLoader;
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	18 import org.eclipse.swt.graphics.PaletteData;
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	19 import org.eclipse.swt.graphics.RGB;
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	20 import org.eclipse.swt.internal.image.LEDataInputStream;
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	21 import org.eclipse.swt.internal.image.FileFormat;
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	22 import java.io.ByteArrayOutputStream;
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	23 import java.lang.all;
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	24
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	25 import tango.core.Exception;
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	26
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	27 final class OS2BMPFileFormat : FileFormat {
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	28 static final int BMPFileHeaderSize = 14;
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	29 static final int BMPHeaderFixedSize = 12;
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	30 int width, height, bitCount;
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	31
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	32 override bool isFileFormat(LEDataInputStream stream) {
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	33 try {
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	34 byte[] header = new byte[18];
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	35 stream.read(header);
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	36 stream.unread(header);
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	37 int infoHeaderSize = (header[14] & 0xFF) \| ((header[15] & 0xFF) << 8) \| ((header[16] & 0xFF) << 16) \| ((header[17] & 0xFF) << 24);
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	38 return header[0] is 0x42 && header[1] is 0x4D && infoHeaderSize is BMPHeaderFixedSize;
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	39 } catch (Exception e) {
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	40 return false;
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	41 }
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	42 }
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	43 byte[] loadData(byte[] infoHeader) {
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	44 int stride = (width * bitCount + 7) / 8;
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	45 stride = (stride + 3) / 4 * 4; // Round up to 4 byte multiple
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	46 byte[] data = loadData(infoHeader, stride);
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	47 flipScanLines(data, stride, height);
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	48 return data;
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	49 }
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	50 byte[] loadData(byte[] infoHeader, int stride) {
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	51 int dataSize = height * stride;
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	52 byte[] data = new byte[dataSize];
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	53 try {
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	54 if (inputStream.read(data) !is dataSize)
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	55 SWT.error(SWT.ERROR_INVALID_IMAGE);
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	56 } catch (IOException e) {
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	57 SWT.error(SWT.ERROR_IO, e);
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	58 }
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	59 return data;
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	60 }
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	61 int[] loadFileHeader() {
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	62 int[] header = new int[5];
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	63 try {
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	64 header[0] = inputStream.readShort();
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	65 header[1] = inputStream.readInt();
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	66 header[2] = inputStream.readShort();
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	67 header[3] = inputStream.readShort();
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	68 header[4] = inputStream.readInt();
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	69 } catch (IOException e) {
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	70 SWT.error(SWT.ERROR_IO, e);
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	71 }
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	72 if (header[0] !is 0x4D42)
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	73 SWT.error(SWT.ERROR_INVALID_IMAGE);
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	74 return header;
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	75 }
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	76 override ImageData[] loadFromByteStream() {
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	77 int[] fileHeader = loadFileHeader();
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	78 byte[] infoHeader = new byte[BMPHeaderFixedSize];
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	79 try {
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	80 inputStream.read(infoHeader);
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	81 } catch (Exception e) {
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	82 SWT.error(SWT.ERROR_IO, e);
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	83 }
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	84 width = (infoHeader[4] & 0xFF) \| ((infoHeader[5] & 0xFF) << 8);
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	85 height = (infoHeader[6] & 0xFF) \| ((infoHeader[7] & 0xFF) << 8);
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	86 bitCount = (infoHeader[10] & 0xFF) \| ((infoHeader[11] & 0xFF) << 8);
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	87 PaletteData palette = loadPalette(infoHeader);
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	88 if (inputStream.getPosition() < fileHeader[4]) {
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	89 // Seek to the specified offset
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	90 try {
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	91 inputStream.skip(fileHeader[4] - inputStream.getPosition());
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	92 } catch (IOException e) {
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	93 SWT.error(SWT.ERROR_IO, e);
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	94 }
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	95 }
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	96 byte[] data = loadData(infoHeader);
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	97 int type = SWT.IMAGE_OS2_BMP;
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	98 return [
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	99 ImageData.internal_new(
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	100 width,
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	101 height,
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	102 bitCount,
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	103 palette,
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	104 4,
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	105 data,
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	106 0,
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	107 null,
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	108 null,
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	109 -1,
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	110 -1,
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	111 type,
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	112 0,
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	113 0,
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	114 0,
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	115 0)
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	116 ];
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	117 }
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	118 PaletteData loadPalette(byte[] infoHeader) {
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	119 if (bitCount <= 8) {
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	120 int numColors = 1 << bitCount;
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	121 byte[] buf = new byte[numColors * 3];
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	122 try {
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	123 if (inputStream.read(buf) !is buf.length)
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	124 SWT.error(SWT.ERROR_INVALID_IMAGE);
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	125 } catch (IOException e) {
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	126 SWT.error(SWT.ERROR_IO, e);
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	127 }
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	128 return paletteFromBytes(buf, numColors);
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	129 }
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	130 if (bitCount is 16) return new PaletteData(0x7C00, 0x3E0, 0x1F);
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	131 if (bitCount is 24) return new PaletteData(0xFF, 0xFF00, 0xFF0000);
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	132 return new PaletteData(0xFF00, 0xFF0000, 0xFF000000);
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	133 }
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	134 PaletteData paletteFromBytes(byte[] bytes, int numColors) {
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	135 int bytesOffset = 0;
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	136 RGB[] colors = new RGB[numColors];
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	137 for (int i = 0; i < numColors; i++) {
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	138 colors[i] = new RGB(bytes[bytesOffset + 2] & 0xFF,
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	139 bytes[bytesOffset + 1] & 0xFF,
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	140 bytes[bytesOffset] & 0xFF);
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	141 bytesOffset += 3;
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	142 }
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	143 return new PaletteData(colors);
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	144 }
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	145 /**
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	146 * Answer a byte array containing the BMP representation of
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	147 * the given device independent palette.
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	148 */
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	149 static byte[] paletteToBytes(PaletteData pal) {
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	150 int n = pal.colors is null ? 0 : (pal.colors.length < 256 ? pal.colors.length : 256);
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	151 byte[] bytes = new byte[n * 3];
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	152 int offset = 0;
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	153 for (int i = 0; i < n; i++) {
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	154 RGB col = pal.colors[i];
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	155 bytes[offset] = cast(byte)col.blue;
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	156 bytes[offset + 1] = cast(byte)col.green;
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	157 bytes[offset + 2] = cast(byte)col.red;
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	158 offset += 3;
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	159 }
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	160 return bytes;
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	161 }
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	162 /**
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	163 * Unload the given image's data into the given byte stream.
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	164 * Answer the number of bytes written.
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	165 */
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	166 int unloadData(ImageData image, OutputStream ostr) {
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	167 int bmpBpl = 0;
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	168 try {
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	169 int bpl = (image.width * image.depth + 7) / 8;
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	170 bmpBpl = (bpl + 3) / 4 * 4; // BMP pads scanlines to multiples of 4 bytes
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	171 int linesPerBuf = 32678 / bmpBpl;
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	172 byte[] buf = new byte[linesPerBuf * bmpBpl];
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	173 byte[] data = image.data;
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	174 int imageBpl = image.bytesPerLine;
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	175 int dataIndex = imageBpl * (image.height - 1); // Start at last line
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	176 if (image.depth is 16) {
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	177 for (int y = 0; y < image.height; y += linesPerBuf) {
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	178 int count = image.height - y;
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	179 if (linesPerBuf < count) count = linesPerBuf;
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	180 int bufOffset = 0;
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	181 for (int i = 0; i < count; i++) {
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	182 for (int wIndex = 0; wIndex < bpl; wIndex += 2) {
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	183 buf[bufOffset + wIndex + 1] = data[dataIndex + wIndex + 1];
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	184 buf[bufOffset + wIndex] = data[dataIndex + wIndex];
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	185 }
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	186 bufOffset += bmpBpl;
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	187 dataIndex -= imageBpl;
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	188 }
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	189 ostr.write(buf, 0, bufOffset);
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	190 }
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	191 } else {
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	192 for (int y = 0; y < image.height; y += linesPerBuf) {
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	193 int tmp = image.height - y;
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	194 int count = tmp < linesPerBuf ? tmp : linesPerBuf;
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	195 int bufOffset = 0;
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	196 for (int i = 0; i < count; i++) {
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	197 System.arraycopy(data, dataIndex, buf, bufOffset, bpl);
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	198 bufOffset += bmpBpl;
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	199 dataIndex -= imageBpl;
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	200 }
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	201 ostr.write(buf, 0, bufOffset);
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	202 }
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	203 }
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	204 } catch (IOException e) {
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	205 SWT.error(SWT.ERROR_IO, e);
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	206 }
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	207 return bmpBpl * image.height;
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	208 }
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	209 /**
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	210 * Unload a DeviceIndependentImage using Windows .BMP format into the given
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	211 * byte stream.
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	212 */
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	213 override void unloadIntoByteStream(ImageLoader loader) {
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	214 ImageData image = loader.data[0];
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	215 byte[] rgbs;
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	216 int numCols;
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	217 if (!((image.depth is 1) \|\| (image.depth is 4) \|\| (image.depth is 8) \|\|
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	218 (image.depth is 16) \|\| (image.depth is 24) \|\| (image.depth is 32)))
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	219 SWT.error(SWT.ERROR_UNSUPPORTED_DEPTH);
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	220 PaletteData pal = image.palette;
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	221 if ((image.depth is 16) \|\| (image.depth is 24) \|\| (image.depth is 32)) {
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	222 if (!pal.isDirect)
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	223 SWT.error(SWT.ERROR_INVALID_IMAGE);
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	224 numCols = 0;
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	225 rgbs = null;
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	226 } else {
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	227 if (pal.isDirect)
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	228 SWT.error(SWT.ERROR_INVALID_IMAGE);
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	229 numCols = pal.colors.length;
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	230 rgbs = paletteToBytes(pal);
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	231 }
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	232 // Fill in file header, except for bfsize, which is done later.
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	233 int headersSize = BMPFileHeaderSize + BMPHeaderFixedSize;
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	234 int[] fileHeader = new int[5];
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	235 fileHeader[0] = 0x4D42; // Signature
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	236 fileHeader[1] = 0; // File size - filled in later
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	237 fileHeader[2] = 0; // Reserved 1
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	238 fileHeader[3] = 0; // Reserved 2
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	239 fileHeader[4] = headersSize; // Offset to data
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	240 if (rgbs !is null) {
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	241 fileHeader[4] += rgbs.length;
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	242 }
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	243
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	244 // Prepare data. This is done first so we don't have to try to rewind
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	245 // the stream and fill in the details later.
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	246 ByteArrayOutputStream ostr = new ByteArrayOutputStream();
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	247 unloadData(image, ostr);
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	248 byte[] data = ostr.toByteArray();
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	249
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	250 // Calculate file size
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	251 fileHeader[1] = fileHeader[4] + data.length;
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	252
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	253 // Write the headers
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	254 try {
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	255 outputStream.writeShort(fileHeader[0]);
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	256 outputStream.writeInt(fileHeader[1]);
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	257 outputStream.writeShort(fileHeader[2]);
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	258 outputStream.writeShort(fileHeader[3]);
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	259 outputStream.writeInt(fileHeader[4]);
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	260 } catch (IOException e) {
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	261 SWT.error(SWT.ERROR_IO, e);
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	262 }
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	263 try {
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	264 outputStream.writeInt(BMPHeaderFixedSize);
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	265 outputStream.writeShort(image.width);
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	266 outputStream.writeShort(image.height);
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	267 outputStream.writeShort(1);
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	268 outputStream.writeShort(cast(short)image.depth);
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	269 } catch (IOException e) {
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	270 SWT.error(SWT.ERROR_IO, e);
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	271 }
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	272
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	273 // Unload palette
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	274 if (numCols > 0) {
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	275 try {
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	276 outputStream.write(rgbs);
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	277 } catch (IOException e) {
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	278 SWT.error(SWT.ERROR_IO, e);
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	279 }
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	280 }
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	281
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	282 // Unload the data
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	283 try {
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	284 outputStream.write(data);
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	285 } catch (IOException e) {
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	286 SWT.error(SWT.ERROR_IO, e);
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	287 }
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	288 }
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	289 void flipScanLines(byte[] data, int stride, int height) {
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	290 int i1 = 0;
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	291 int i2 = (height - 1) * stride;
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	292 for (int i = 0; i < height / 2; i++) {
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	293 for (int index = 0; index < stride; index++) {
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	294 byte b = data[index + i1];
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	295 data[index + i1] = data[index + i2];
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	296 data[index + i2] = b;
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	297 }
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	298 i1 += stride;
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	299 i2 -= stride;
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	300 }
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	301 }
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	302
6dd524f61e62 add dwt win and basic java stuff Frank Benoit <benoit@tionex.de> parents: diff changeset	303 }

0

6dd524f61e62 add dwt win and basic java stuff