diff options
Diffstat (limited to 'urt/Runput.c')
| -rw-r--r-- | urt/Runput.c | 300 |
1 files changed, 150 insertions, 150 deletions
diff --git a/urt/Runput.c b/urt/Runput.c index 3bc562ac..1a7f2f7b 100644 --- a/urt/Runput.c +++ b/urt/Runput.c @@ -1,14 +1,14 @@ /* * This software is copyrighted as noted below. It may be freely copied, - * modified, and redistributed, provided that the copyright notice is + * modified, and redistributed, provided that the copyright notice is * preserved on all copies. - * + * * There is no warranty or other guarantee of fitness for this software, * it is provided solely "as is". Bug reports or fixes may be sent * to the author, who may or may not act on them as he desires. * * You may not include this software in a program or other software product - * without supplying the source, or without informing the end-user that the + * without supplying the source, or without informing the end-user that the * source is available for no extra charge. * * If you modify this software, you should include a notice giving the @@ -18,146 +18,146 @@ * Modified at BRL 16-May-88 by Mike Muuss to avoid Alliant STDC desire * to have all "void" functions so declared. */ -/* +/* * Runput.c - General purpose Run Length Encoding. - * - * Author: Spencer W. Thomas - * Computer Science Dept. - * University of Utah - * Date: Mon Aug 9 1982 + * + * Author: Spencer W. Thomas + * Computer Science Dept. + * University of Utah + * Date: Mon Aug 9 1982 * Copyright (c) 1982,1986 Spencer W. Thomas - * + * * $Id: Runput.c,v 3.0.1.1 1992/01/28 18:17:40 spencer Exp $ - * - * Modified by: Todd W. Fuqua - * Date: Jul 22 1984 + * + * Modified by: Todd W. Fuqua + * Date: Jul 22 1984 * convert to new RLE format to make room for larger frame buffers */ /* THIS IS WAY OUT OF DATE. See rle.5. * The output file format is: - * - * Word 0: A "magic" number. The top byte of the word contains - * the letter 'R' or the letter 'W'. 'W' indicates that - * only black and white information was saved. The bottom - * byte is one of the following: - * ' ': Means a straight "box" save, -S flag was given. - * 'B': Image saved with background color, clear screen to - * background before restoring image. - * 'O': Image saved in overlay mode. - * - * Words 1-6: The structure - * { short xpos, Lower left corner + * + * Word 0: A "magic" number. The top byte of the word contains + * the letter 'R' or the letter 'W'. 'W' indicates that + * only black and white information was saved. The bottom + * byte is one of the following: + * ' ': Means a straight "box" save, -S flag was given. + * 'B': Image saved with background color, clear screen to + * background before restoring image. + * 'O': Image saved in overlay mode. + * + * Words 1-6: The structure + * { short xpos, Lower left corner * ypos, - * xsize, Size of saved box + * xsize, Size of saved box * ysize; - * char rgb[3]; Background color - * char map; flag for map presence + * char rgb[3]; Background color + * char map; flag for map presence * } - * - * If the map flag is non-zero, then the color map will follow as + * + * If the map flag is non-zero, then the color map will follow as * 3*256 16 bit words, first the red map, then the green map, and * finally the blue map. - * + * * Following the setup information is the Run Length Encoded image. * Each instruction consists of a 4-bit opcode, a 12-bit datum and * possibly one or more following words (all words are 16 bits). The * instruction opcodes are: - * + * * SkipLines (1): The bottom 10 bits are an unsigned number to be added to - * current Y position. - * + * current Y position. + * * SetColor (2): The datum indicates which color is to be loaded with - * the data described by the following ByteData and - * RunData instructions. 0->red, 1->green, 2->blue. The - * operation also resets the X position to the initial - * X (i.e. a carriage return operation is performed). - * + * the data described by the following ByteData and + * RunData instructions. 0->red, 1->green, 2->blue. The + * operation also resets the X position to the initial + * X (i.e. a carriage return operation is performed). + * * SkipPixels (3): The bottom 10 bits are an unsigned number to be - * added to the current X position. - * + * added to the current X position. + * * ByteData (5): The datum is one less than the number of bytes of - * color data following. If the number of bytes is - * odd, a filler byte will be appended to the end of - * the byte string to make an integral number of 16-bit - * words. The bytes are in PDP-11 order. The X - * position is incremented to follow the last byte of - * data. - * - * RunData (6): The datum is one less than the run length. The - * following word contains (in its lower 8 bits) the - * color of the run. The X position is incremented to - * follow the last byte in the run. + * color data following. If the number of bytes is + * odd, a filler byte will be appended to the end of + * the byte string to make an integral number of 16-bit + * words. The bytes are in PDP-11 order. The X + * position is incremented to follow the last byte of + * data. + * + * RunData (6): The datum is one less than the run length. The + * following word contains (in its lower 8 bits) the + * color of the run. The X position is incremented to + * follow the last byte in the run. */ #include <string.h> -#include <stdio.h> +#include <stdio.h> -#include "rle_put.h" -#include "rle.h" -#include "rle_code.h" +#include "rle_put.h" +#include "rle.h" +#include "rle_code.h" #include "vaxshort.h" #include "Runput.h" -#define UPPER 255 /* anything bigger ain't a byte */ +#define UPPER 255 /* anything bigger ain't a byte */ /* * Macros to make writing instructions with correct byte order easier. */ /* Write a two-byte value in little_endian order. */ -#define put16(a) (putc((a)&0xff,rle_fd),putc((char)(((a)>>8)&0xff),rle_fd)) +#define put16(a) (putc((a)&0xff,rle_fd),putc((char)(((a)>>8)&0xff),rle_fd)) /* short instructions */ -#define mk_short_1(oper,a1) /* one argument short */ \ +#define mk_short_1(oper,a1) /* one argument short */ \ putc(oper,rle_fd), putc((char)a1,rle_fd) -#define mk_short_2(oper,a1,a2) /* two argument short */ \ +#define mk_short_2(oper,a1,a2) /* two argument short */ \ putc(oper,rle_fd), putc((char)a1,rle_fd), put16(a2) /* long instructions */ -#define mk_long_1(oper,a1) /* one argument long */ \ +#define mk_long_1(oper,a1) /* one argument long */ \ putc((char)(LONG|oper),rle_fd), putc('\0', rle_fd), put16(a1) -#define mk_long_2(oper,a1,a2) /* two argument long */ \ +#define mk_long_2(oper,a1,a2) /* two argument long */ \ putc((char)(LONG|oper),rle_fd), putc('\0', rle_fd), \ put16(a1), put16(a2) /* choose between long and short format instructions */ /* NOTE: these macros can only be used where a STATEMENT is legal */ -#define mk_inst_1(oper,a1) /* one argument inst */ \ +#define mk_inst_1(oper,a1) /* one argument inst */ \ if (a1>UPPER) (mk_long_1(oper,a1)); else (mk_short_1(oper,a1)) -#define mk_inst_2(oper,a1,a2) /* two argument inst */ \ +#define mk_inst_2(oper,a1,a2) /* two argument inst */ \ if (a1>UPPER) (mk_long_2(oper,a1,a2)); else (mk_short_2(oper,a1,a2)) -/* +/* * Opcode definitions */ -#define RSkipLines(n) mk_inst_1(RSkipLinesOp,(n)) +#define RSkipLines(n) mk_inst_1(RSkipLinesOp,(n)) -#define RSetColor(c) mk_short_1(RSetColorOp,(c)) - /* has side effect of performing */ - /* "carriage return" action */ +#define RSetColor(c) mk_short_1(RSetColorOp,(c)) + /* has side effect of performing */ + /* "carriage return" action */ -#define RSkipPixels(n) mk_inst_1(RSkipPixelsOp,(n)) +#define RSkipPixels(n) mk_inst_1(RSkipPixelsOp,(n)) -#define RNewLine RSkipLines(1) +#define RNewLine RSkipLines(1) -#define RByteData(n) mk_inst_1(RByteDataOp,n) - /* followed by ((n+1)/2)*2 bytes */ - /* of data. If n is odd, last */ - /* byte will be ignored */ - /* "cursor" is left at pixel */ - /* following last pixel written */ +#define RByteData(n) mk_inst_1(RByteDataOp,n) + /* followed by ((n+1)/2)*2 bytes */ + /* of data. If n is odd, last */ + /* byte will be ignored */ + /* "cursor" is left at pixel */ + /* following last pixel written */ -#define RRunData(n,c) mk_inst_2(RRunDataOp,(n),(c)) - /* next word contains color data */ - /* "cursor" is left at pixel after */ - /* end of run */ +#define RRunData(n,c) mk_inst_2(RRunDataOp,(n),(c)) + /* next word contains color data */ + /* "cursor" is left at pixel after */ + /* end of run */ -#define REOF mk_inst_1(REOFOp,0) - /* Really opcode only */ +#define REOF mk_inst_1(REOFOp,0) + /* Really opcode only */ /***************************************************************** * TAG( RunSetup ) @@ -167,33 +167,33 @@ void RunSetup(rle_hdr * the_hdr) { struct XtndRsetup setup; - register FILE * rle_fd = the_hdr->rle_file; + FILE * rle_fd = the_hdr->rle_file; put16( RLE_MAGIC ); if ( the_hdr->background == 2 ) - setup.h_flags = H_CLEARFIRST; + setup.h_flags = H_CLEARFIRST; else if ( the_hdr->background == 0 ) - setup.h_flags = H_NO_BACKGROUND; + setup.h_flags = H_NO_BACKGROUND; else - setup.h_flags = 0; + setup.h_flags = 0; if ( the_hdr->alpha ) - setup.h_flags |= H_ALPHA; + setup.h_flags |= H_ALPHA; if ( the_hdr->comments != NULL && *the_hdr->comments != NULL ) - setup.h_flags |= H_COMMENT; + setup.h_flags |= H_COMMENT; setup.h_ncolors = the_hdr->ncolors; - setup.h_pixelbits = 8; /* Grinnell dependent */ + setup.h_pixelbits = 8; /* Grinnell dependent */ if ( the_hdr->ncmap > 0 && the_hdr->cmap == NULL ) { - fprintf( stderr, + fprintf( stderr, "%s: Color map of size %d*%d specified, but not supplied, writing %s\n", - the_hdr->cmd, the_hdr->ncmap, (1 << the_hdr->cmaplen), - the_hdr->file_name ); - the_hdr->ncmap = 0; + the_hdr->cmd, the_hdr->ncmap, (1 << the_hdr->cmaplen), + the_hdr->file_name ); + the_hdr->ncmap = 0; } - setup.h_cmaplen = the_hdr->cmaplen; /* log2 of color map size */ - setup.h_ncmap = the_hdr->ncmap; /* no of color channels */ + setup.h_cmaplen = the_hdr->cmaplen; /* log2 of color map size */ + setup.h_ncmap = the_hdr->ncmap; /* no of color channels */ vax_pshort(setup.hc_xpos,the_hdr->xmin); vax_pshort(setup.hc_ypos,the_hdr->ymin); vax_pshort(setup.hc_xlen,the_hdr->xmax - the_hdr->xmin + 1); @@ -201,61 +201,61 @@ RunSetup(rle_hdr * the_hdr) fwrite((char *)&setup, SETUPSIZE, 1, rle_fd); if ( the_hdr->background != 0 ) { - register int i; - register rle_pixel *background = - (rle_pixel *)malloc( (unsigned)(the_hdr->ncolors + 1) ); - register int *bg_color; - /* - * If even number of bg color bytes, put out one more to get to - * 16 bit boundary. - */ - bg_color = the_hdr->bg_color; - for ( i = 0; i < the_hdr->ncolors; i++ ) - background[i] = *bg_color++; - /* Extra byte, if written, should be 0. */ - background[i] = 0; - fwrite((char *)background, (the_hdr->ncolors / 2) * 2 + 1, 1, rle_fd); - free( background ); + int i; + rle_pixel *background = + (rle_pixel *)malloc( (unsigned)(the_hdr->ncolors + 1) ); + int *bg_color; + /* + * If even number of bg color bytes, put out one more to get to + * 16 bit boundary. + */ + bg_color = the_hdr->bg_color; + for ( i = 0; i < the_hdr->ncolors; i++ ) + background[i] = *bg_color++; + /* Extra byte, if written, should be 0. */ + background[i] = 0; + fwrite((char *)background, (the_hdr->ncolors / 2) * 2 + 1, 1, rle_fd); + free( background ); } else - putc( '\0', rle_fd ); + putc( '\0', rle_fd ); if (the_hdr->ncmap > 0) { - /* Big-endian machines are harder */ - register int i, nmap = (1 << the_hdr->cmaplen) * - the_hdr->ncmap; - register char *h_cmap = (char *)malloc( nmap * 2 ); - if ( h_cmap == NULL ) - { - fprintf( stderr, - "%s: Malloc failed for color map of size %d, writing %s\n", - the_hdr->cmd, nmap, the_hdr->file_name ); - exit( 1 ); - } - for ( i = 0; i < nmap; i++ ) - vax_pshort( &h_cmap[i*2], the_hdr->cmap[i] ); - - fwrite( h_cmap, nmap, 2, rle_fd ); - free( h_cmap ); + /* Big-endian machines are harder */ + int i, nmap = (1 << the_hdr->cmaplen) * + the_hdr->ncmap; + char *h_cmap = (char *)malloc( nmap * 2 ); + if ( h_cmap == NULL ) + { + fprintf( stderr, + "%s: Malloc failed for color map of size %d, writing %s\n", + the_hdr->cmd, nmap, the_hdr->file_name ); + exit( 1 ); + } + for ( i = 0; i < nmap; i++ ) + vax_pshort( &h_cmap[i*2], the_hdr->cmap[i] ); + + fwrite( h_cmap, nmap, 2, rle_fd ); + free( h_cmap ); } /* Now write out comments if given */ if ( setup.h_flags & H_COMMENT ) { - int comlen; - register CONST_DECL char ** com_p; + int comlen; + CONST_DECL char ** com_p; - /* Get the total length of comments */ - comlen = 0; - for ( com_p = the_hdr->comments; *com_p != NULL; com_p++ ) - comlen += 1 + strlen( *com_p ); + /* Get the total length of comments */ + comlen = 0; + for ( com_p = the_hdr->comments; *com_p != NULL; com_p++ ) + comlen += 1 + strlen( *com_p ); - put16( comlen ); - for ( com_p = the_hdr->comments; *com_p != NULL; com_p++ ) - fwrite( *com_p, 1, strlen( *com_p ) + 1, rle_fd ); + put16( comlen ); + for ( com_p = the_hdr->comments; *com_p != NULL; com_p++ ) + fwrite( *com_p, 1, strlen( *com_p ) + 1, rle_fd ); - if ( comlen & 1 ) /* if odd length, round up */ - putc( '\0', rle_fd ); + if ( comlen & 1 ) /* if odd length, round up */ + putc( '\0', rle_fd ); } } @@ -266,7 +266,7 @@ RunSetup(rle_hdr * the_hdr) void RunSkipBlankLines(int nblank, rle_hdr * the_hdr) { - register FILE * rle_fd = the_hdr->rle_file; + FILE * rle_fd = the_hdr->rle_file; RSkipLines(nblank); } @@ -278,7 +278,7 @@ RunSkipBlankLines(int nblank, rle_hdr * the_hdr) void RunSetColor(int c, rle_hdr * the_hdr) { - register FILE * rle_fd = the_hdr->rle_file; + FILE * rle_fd = the_hdr->rle_file; RSetColor(c); } @@ -291,10 +291,10 @@ RunSetColor(int c, rle_hdr * the_hdr) void RunSkipPixels(int nskip, int last, int wasrun, rle_hdr * the_hdr) { - register FILE * rle_fd = the_hdr->rle_file; + FILE * rle_fd = the_hdr->rle_file; if (! last && nskip > 0) { - RSkipPixels(nskip); + RSkipPixels(nskip); } } @@ -306,10 +306,10 @@ RunSkipPixels(int nskip, int last, int wasrun, rle_hdr * the_hdr) void RunNewScanLine(int flag, rle_hdr * the_hdr) { - register FILE * rle_fd = the_hdr->rle_file; + FILE * rle_fd = the_hdr->rle_file; if (flag) { - RNewLine; + RNewLine; } } @@ -320,14 +320,14 @@ RunNewScanLine(int flag, rle_hdr * the_hdr) void Runputdata(rle_pixel * buf, int n, rle_hdr * the_hdr) { - register FILE * rle_fd = the_hdr->rle_file; + FILE * rle_fd = the_hdr->rle_file; if (n == 0) - return; + return; RByteData(n-1); fwrite((char *)buf, n, 1, rle_fd); if ( n & 1 ) - putc( 0, rle_fd ); + putc( 0, rle_fd ); } /***************************************************************** @@ -339,7 +339,7 @@ Runputdata(rle_pixel * buf, int n, rle_hdr * the_hdr) void Runputrun(int color, int n, int last, rle_hdr * the_hdr) { - register FILE * rle_fd = the_hdr->rle_file; + FILE * rle_fd = the_hdr->rle_file; RRunData(n-1,color); } @@ -351,6 +351,6 @@ Runputrun(int color, int n, int last, rle_hdr * the_hdr) void RunputEof(rle_hdr * the_hdr) { - register FILE * rle_fd = the_hdr->rle_file; + FILE * rle_fd = the_hdr->rle_file; REOF; } |