/*

    File:       DrawTextDecompress.c

    Contains:   

    Written by: Mark Krueger    

    Copyright:  Copyright © 1992-1999 by Apple Computer, Inc., All Rights Reserved.

                You may incorporate this Apple sample source code into your program(s) without

                restriction. This Apple sample source code has been provided "AS IS" and the

                responsibility for its operation is yours. You are not permitted to redistribute

                this Apple sample source code as "Apple sample source code" after having made

                changes. If you're going to re-distribute the source, we require that you make

                it clear in the source that the code was descended from Apple sample source

                code, but that you've made changes.

    Change History (most recent first):

                7/29/1999   Karl Groethe    Updated for Metrowerks Codewarror Pro 2.1

*/

#include    <QuickDraw.h>

#include    "ImageCompression.h"

#include    "DrawTextCodec.h"

long Decompress(unsigned char *baseAddr,short rowBytes,short bwidth,short bheight,char *dataPtr);

/*

    decompress bheight strips ( of bwidth blocks ) of data. Each block is represented 

    by one character of the font from compressed data. Font is assumed to be the same

    as that used in compression - ( font type style and size could be included in a header

    before the actual compressed data if we wanted to be truly flexible, but for a half-hour

     demo hack we dont wanna be) 

    destination must be 1-bit/pixel.

    should be called in 32-bit mode.

*/

long

Decompress(unsigned char *baseAddr,short rowBytes,short bwidth,short bheight,char *dataPtr)

{

    char            *startDataPtr;

    unsigned char   *rp,*bp;

    short           i,x,y;

    startDataPtr = dataPtr;             /* remember where we started from */

    TextSize(FONT_SIZE);

    TextFont(FONT_ID);

    for ( y=0; y <  bheight; y++ ) {

        rp = baseAddr;

        for (x=0; x < bwidth; x++) {

            bp = rp;

            for ( i=0; i < FONT_HEIGHT; i++ ) {

                *bp = 0;

                bp += rowBytes;

            }

            MoveTo(x*FONT_WIDTH,BASE_LINE + y*FONT_HEIGHT);

            DrawChar(*dataPtr++);

            rp++;

            if ( x < bwidth ) {

                bp = rp;

                for ( i=0; i < FONT_HEIGHT; i++ ) {

                    *bp = 0;

                    bp += rowBytes;

                }

            }

        }

        baseAddr += rowBytes * FONT_HEIGHT;

    } 

    return (dataPtr - startDataPtr);    

}