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author | giraffedata <giraffedata@9d0c8265-081b-0410-96cb-a4ca84ce46f8> | 2006-08-19 03:12:28 +0000 |
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committer | giraffedata <giraffedata@9d0c8265-081b-0410-96cb-a4ca84ce46f8> | 2006-08-19 03:12:28 +0000 |
commit | 1fd361a1ea06e44286c213ca1f814f49306fdc43 (patch) | |
tree | 64c8c96cf54d8718847339a403e5e67b922e8c3f /converter/other/pgmtoppm.c | |
download | netpbm-mirror-1fd361a1ea06e44286c213ca1f814f49306fdc43.tar.gz netpbm-mirror-1fd361a1ea06e44286c213ca1f814f49306fdc43.tar.xz netpbm-mirror-1fd361a1ea06e44286c213ca1f814f49306fdc43.zip |
Create Subversion repository
git-svn-id: http://svn.code.sf.net/p/netpbm/code/trunk@1 9d0c8265-081b-0410-96cb-a4ca84ce46f8
Diffstat (limited to 'converter/other/pgmtoppm.c')
-rw-r--r-- | converter/other/pgmtoppm.c | 153 |
1 files changed, 153 insertions, 0 deletions
diff --git a/converter/other/pgmtoppm.c b/converter/other/pgmtoppm.c new file mode 100644 index 00000000..c695ddd5 --- /dev/null +++ b/converter/other/pgmtoppm.c @@ -0,0 +1,153 @@ +/* pgmtoppm.c - colorize a portable graymap into a portable pixmap +** +** Copyright (C) 1991 by Jef Poskanzer. +** +** Permission to use, copy, modify, and distribute this software and its +** documentation for any purpose and without fee is hereby granted, provided +** that the above copyright notice appear in all copies and that both that +** copyright notice and this permission notice appear in supporting +** documentation. This software is provided "as is" without express or +** implied warranty. +*/ + +#include <string.h> +#include "ppm.h" + +int +main( argc, argv ) + int argc; + char* argv[]; + { + FILE* ifp; + gray* grayrow; + register gray* gP; + pixel p; + pixel* pixelrow; + register pixel* pP; + pixel** mappixels; + int argn, rows, cols, format, maprows, mapcols, mapmaxcolor, row; + register int col; + gray maxval; + pixval mapmaxval; + char* color0; + char* color1; + pixval red0, grn0, blu0, red1, grn1, blu1; + const char* const usage = "<colorspec> [pgmfile]\n <colorspec1>,<colorspec2> [pgmfile]\n -map mapfile [pgmfile]"; + + + ppm_init( &argc, argv ); + + argn = 1; + mappixels = (pixel**) 0; + + if ( argn < argc && argv[argn][0] == '-' && argv[argn][1] != '\0' ) + { + if ( pm_keymatch( argv[argn], "-map", 2 ) ) + { + ++argn; + if ( argn == argc ) + pm_usage( usage ); + ifp = pm_openr( argv[argn] ); + mappixels = ppm_readppm( ifp, &mapcols, &maprows, &mapmaxval ); + pm_close( ifp ); + mapmaxcolor = maprows * mapcols - 1; + } + else + pm_usage( usage ); + ++argn; + } + + if ( mappixels == (pixel**) 0 ) + { + if ( argn == argc ) + pm_usage( usage ); + color0 = argv[argn]; + ++argn; + } + + if ( argn != argc ) + { + ifp = pm_openr( argv[argn] ); + ++argn; + } + else + ifp = stdin; + + if ( argn != argc ) + pm_usage( usage ); + + pgm_readpgminit( ifp, &cols, &rows, &maxval, &format ); + grayrow = pgm_allocrow( cols ); + if ( mappixels == (pixel**) 0 ) + ppm_writeppminit( stdout, cols, rows, (pixval) maxval, 0 ); + else + ppm_writeppminit( stdout, cols, rows, mapmaxval, 0 ); + pixelrow = ppm_allocrow( cols ); + + if ( mappixels == (pixel**) 0 ) + { + color1 = strchr( color0, '-' ); + if ( color1 == 0 ) + { + color1 = color0; + red0 = 0; + grn0 = 0; + blu0 = 0; + } + else + { + *color1 = '\0'; + ++color1; + p = ppm_parsecolor( color0, (pixval) maxval ); + red0 = PPM_GETR( p ); + grn0 = PPM_GETG( p ); + blu0 = PPM_GETB( p ); + } + p = ppm_parsecolor( color1, (pixval) maxval ); + red1 = PPM_GETR( p ); + grn1 = PPM_GETG( p ); + blu1 = PPM_GETB( p ); + } + + for ( row = 0; row < rows; ++row ) + { + pgm_readpgmrow( ifp, grayrow, cols, maxval, format ); + + if ( mappixels == (pixel**) 0 ) + { + for ( col = 0, gP = grayrow, pP = pixelrow; + col < cols; + ++col, ++gP, ++pP ) + PPM_ASSIGN( + *pP, + ( red0 * ( maxval - *gP ) + red1 * *gP ) / maxval, + ( grn0 * ( maxval - *gP ) + grn1 * *gP ) / maxval, + ( blu0 * ( maxval - *gP ) + blu1 * *gP ) / maxval ); + + } + else + { + register int c; + + for ( col = 0, gP = grayrow, pP = pixelrow; + col < cols; + ++col, ++gP, ++pP ) + { + if ( maxval == mapmaxcolor ) + c = *gP; + else + c = *gP * mapmaxcolor / maxval; + *pP = mappixels[c / mapcols][c % mapcols]; + } + } + + ppm_writeppmrow( stdout, pixelrow, cols, (pixval) maxval, 0 ); + } + + pm_close( ifp ); + + /* If the program failed, it previously aborted with nonzero completion + code, via various function calls. + */ + return 0; + } |