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/*
* mcu.h --
*
* Copyright (C) 1991, 1992, Thomas G. Lane.
* Part of the Independent JPEG Group's software.
* See the file Copyright for more details.
*
* Copyright (c) 1993 Brian C. Smith, The Regents of the University
* of California
* All rights reserved.
*
* Copyright (c) 1994 Kongji Huang and Brian C. Smith.
* Cornell University
* All rights reserved.
*
* Permission to use, copy, modify, and distribute this software and its
* documentation for any purpose, without fee, and without written agreement is
* hereby granted, provided that the above copyright notice and the following
* two paragraphs appear in all copies of this software.
*
* IN NO EVENT SHALL CORNELL UNIVERSITY BE LIABLE TO ANY PARTY FOR
* DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT
* OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF CORNELL
* UNIVERSITY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* CORNELL UNIVERSITY SPECIFICALLY DISCLAIMS ANY WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
* ON AN "AS IS" BASIS, AND CORNELL UNIVERSITY HAS NO OBLIGATION TO
* PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
*/
#ifndef _MCU
#define _MCU
/*
* An MCU (minimum coding unit) is an array of samples.
*/
typedef short ComponentType; /* the type of image components */
typedef ComponentType *MCU; /* MCU - array of samples */
extern MCU *mcuTable; /* the global mcu table that buffers the source image */
extern int numMCU; /* number of MCUs in mcuTable */
extern MCU *mcuROW1,*mcuROW2; /* pt to two rows of MCU in encoding & decoding */
/*
*--------------------------------------------------------------
*
* MakeMCU --
*
* MakeMCU returns an MCU for input parsing.
*
* Results:
* A new MCU
*
* Side effects:
* None.
*
*--------------------------------------------------------------
*/
#define MakeMCU(dcPtr) (mcuTable[numMCU++])
#endif /* _MCU */
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