/* * 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 */