/*?Bitmap.java
?*?Component:?ProperJavaRDP
?*?
?*?Revision:?$Revision:?12?$
?*?Author:?$Author:?miha_vitorovic?$
?*?Date:?$Date:?2007-05-11?19:49:09?+0800?（五?2007-05-11）?$
?*
?*?Copyright?（c）?2005?Propero?Limited
?*
?*?Purpose:?Provide?a?class?for?storage?of?Bitmap?images?along?with
?*??????????static?methods?for?decompression?and?conversion?of?bitmaps.
?*?
?*?This?program?is?free?software;?you?can?redistribute?it?and/or?modify
?*?it?under?the?terms?of?the?GNU?General?Public?License?as?published?by
?*?the?Free?Software?Foundation;?either?version?2?of?the?License?or?（at
?*?your?option）?any?later?version.
?*?
?*?This?program?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?for?more?details.
?*?
?*?You?should?have?received?a?copy?of?the?GNU?General?Public?License
?*?along?with?this?program;?if?not?write?to?the?Free?Software
?*?Foundation?Inc.?59?Temple?Place?Suite?330?Boston?MA?02111-1307
?*?USA
?*?
?*?（See?gpl.txt?for?details?of?the?GNU?General?Public?License.）
?*??????????
?*/

package?net.propero.rdp;

import?java.awt.Image;
import?java.awt.image.BufferedImage;
import?java.awt.image.IndexColorModel;

import?org.apache.log4j.Logger;

public?class?Bitmap?{

	public?int?usage;

	private?int[]?highdata?=?null;

	private?int?width?=?0;

	private?int?height?=?0;

	private?int?x?=?0;

	private?int?y?=?0;

	protected?static?Logger?logger?=?Logger.getLogger（Rdp.class）;

	public?static?int?convertTo24（int?colour）?{
		if?（Options.server_bpp?==?15）
			return?convert15to24（colour）;
		if?（Options.server_bpp?==?16）
			return?convert16to24（colour）;
		return?colour;
	}

	public?static?int?convert15to24（int?colour16）?{
		int?r24?=?（colour16?>>?7）?&?0xF8;
		int?g24?=?（colour16?>>?2）?&?0xF8;
		int?b24?=?（colour16?<
		r24?|=?r24?>>?5;
		g24?|=?g24?>>?5;
		b24?|=?b24?>>?5;

		return?（r24?<	}

	public?static?int?convert16to24（int?colour16）?{
		int?r24?=?（colour16?>>?8）?&?0xF8;
		int?g24?=?（colour16?>>?3）?&?0xFC;
		int?b24?=?（colour16?<
		r24?|=?r24?>>?5;
		g24?|=?g24?>>?6;
		b24?|=?b24?>>?5;

		return?（r24?<	}

	private?static?int?bmpCount?=?0;

	/**
	?*?Read?integer?of?a?specified?byte-length?from?byte?array
	?*?
	?*?@param?data
	?*????????????Array?to?read?from
	?*?@param?offset
	?*????????????Offset?in?array?to?read?from
	?*?@param?Bpp
	?*????????????Number?of?bytes?to?read
	?*?@return
	?*/
	static?int?cvalx（byte[]?data?int?offset?int?Bpp）?{
		int?rv?=?0;
		if?（Options.server_bpp?==?15）?{
			int?lower?=?data[offset]?&?0xFF;
			int?full?=?（data[offset?+?1]?&?0xFF）?<
			int?r24?=?（full?>>?7）?&?0xF8;
			r24?|=?r24?>>?5;
			int?g24?=?（full?>>?2）?&?0xF8;
			g24?|=?g24?>>?5;
			int?b24?=?（lower?<