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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/pbm/pbmtoybm.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/pbm/pbmtoybm.c')
-rw-r--r-- | converter/pbm/pbmtoybm.c | 114 |
1 files changed, 114 insertions, 0 deletions
diff --git a/converter/pbm/pbmtoybm.c b/converter/pbm/pbmtoybm.c new file mode 100644 index 00000000..1d2be3d9 --- /dev/null +++ b/converter/pbm/pbmtoybm.c @@ -0,0 +1,114 @@ +/* pbmtoybm.c - read a pbm and write a file for Bennet Yee's 'xbm' and 'face' +** programs. +** +** Written by Jamie Zawinski based on code (C) 1988 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 <stdio.h> +#include "pbm.h" + +#define YBM_MAGIC ( ( '!' << 8 ) | '!' ) + +static void putinit ARGS(( int cols, int rows )); +static void putbit ARGS(( bit b )); +static void putrest ARGS(( void )); +static void putitem ARGS(( void )); + +int +main( argc, argv ) + int argc; + char* argv[]; + { + FILE* ifp; + bit* bitrow; + register bit* bP; + int rows, cols, format, padright, row, col; + + + pbm_init( &argc, argv ); + + if ( argc > 2 ) + pm_usage( "[pbmfile]" ); + if ( argc == 2 ) + ifp = pm_openr( argv[1] ); + else + ifp = stdin; + + pbm_readpbminit( ifp, &cols, &rows, &format ); + bitrow = pbm_allocrow( cols ); + + /* Compute padding to round cols up to the nearest multiple of 16. */ + padright = ( ( cols + 15 ) / 16 ) * 16 - cols; + + putinit( cols, rows ); + for ( row = 0; row < rows; ++row ) + { + pbm_readpbmrow( ifp, bitrow, cols, format ); + for ( col = 0, bP = bitrow; col < cols; ++col, ++bP ) + putbit( *bP ); + for ( col = 0; col < padright; ++col ) + putbit( 0 ); + } + + if ( ifp != stdin ) + fclose( ifp ); + + putrest( ); + + exit( 0 ); + } + +static long item; +static int bitsperitem, bitshift; + +static void +putinit( cols, rows ) + int cols, rows; + { + pm_writebigshort( stdout, YBM_MAGIC ); + pm_writebigshort( stdout, cols ); + pm_writebigshort( stdout, rows ); + item = 0; + bitsperitem = 0; + bitshift = 0; + } + +#if __STDC__ +static void +putbit( bit b ) +#else /*__STDC__*/ +static void +putbit( b ) + bit b; +#endif /*__STDC__*/ + { + if ( bitsperitem == 16 ) + putitem( ); + ++bitsperitem; + if ( b == PBM_BLACK ) + item += 1 << bitshift; + ++bitshift; + } + +static void +putrest( ) + { + if ( bitsperitem > 0 ) + putitem( ); + } + +static void +putitem( ) + { + pm_writebigshort( stdout, item ); + item = 0; + bitsperitem = 0; + bitshift = 0; + } |