Mercurial > projects > dwt-linux
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; + } + } +}