diff dwt/internal/image/JPEGSegment.d @ 13:3d9bbe0a83a0

FileFormats
author Frank Benoit <benoit@tionex.de>
date Sun, 06 Jan 2008 22:54:14 +0100
parents
children 8cec8f536af3
line wrap: on
line diff
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dwt/internal/image/JPEGSegment.d	Sun Jan 06 22:54:14 2008 +0100
@@ -0,0 +1,61 @@
+/*******************************************************************************
+ * Copyright (c) 2000, 2003 IBM Corporation and others.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *     IBM Corporation - initial API and implementation
+ *******************************************************************************/
+module dwt.internal.image.JPEGSegment;
+
+import dwt.internal.image.LEDataOutputStream;
+
+import tango.core.Exception;
+
+class JPEGSegment {
+	public byte[] reference;
+
+	this() {
+	}
+
+	public this(byte[] reference) {
+		this.reference = reference;
+	}
+
+	public int signature() {
+		return 0;
+	}
+
+	public bool verify() {
+		return getSegmentMarker() == signature();
+	}
+
+	public int getSegmentMarker() {
+		return ((reference[0] & 0xFF) << 8 | (reference[1] & 0xFF));
+	}
+
+	public void setSegmentMarker(int marker) {
+		reference[0] = cast(byte)((marker & 0xFF00) >> 8);
+		reference[1] = cast(byte)(marker & 0xFF);
+	}
+
+	public int getSegmentLength() {
+		return ((reference[2] & 0xFF) << 8 | (reference[3] & 0xFF));
+	}
+
+	public void setSegmentLength(int length) {
+		reference[2] = cast(byte)((length & 0xFF00) >> 8);
+		reference[3] = cast(byte)(length & 0xFF);
+	}
+
+	public bool writeToStream(LEDataOutputStream byteStream) {
+		try {
+			byteStream.write(reference);
+			return true;
+		} catch (TracedException e) {
+			return false;
+		}
+	}
+}