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OS/2 Shareware BBS: 10 Tools
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gbmsrc.zip
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gbmref.c
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C/C++ Source or Header
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1998-12-31
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5KB
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218 lines
/*
gbmref.c - Reflect General Bitmap
*/
/*...sincludes:0:*/
#include <stdio.h>
#include <ctype.h>
#include <string.h>
#include <stddef.h>
#include <stdlib.h>
#include <stdarg.h>
#include <memory.h>
#include <malloc.h>
#if defined(AIX) || defined(LINUX)
#include <unistd.h>
#else
#include <io.h>
#endif
#include <fcntl.h>
#include <sys/types.h>
#include <sys/stat.h>
#ifndef O_BINARY
#define O_BINARY 0
#endif
#include "gbm.h"
#include "gbmmir.h"
/*...vgbm\46\h:0:*/
/*...vgbmmir\46\h:0:*/
/*...e*/
static char progname[] = "gbmref";
/*...sfatal:0:*/
static void fatal(const char *fmt, ...)
{
va_list vars;
char s[256+1];
va_start(vars, fmt);
vsprintf(s, fmt, vars);
va_end(vars);
fprintf(stderr, "%s: %s\n", progname, s);
exit(1);
}
/*...e*/
/*...susage:0:*/
static void usage(void)
{
int ft, n_ft;
fprintf(stderr, "usage: %s [-h] [-v] [-t] fn1.ext{,opt} [--] [fn2.ext{,opt}]\n", progname);
fprintf(stderr, "flags: -h reflect horizontally\n");
fprintf(stderr, " -v reflect vertically\n");
fprintf(stderr, " -t transpose x by y\n");
fprintf(stderr, " fn1.ext{,opt} input filename (with any format specific options)\n");
fprintf(stderr, " fn2.ext{,opt} optional output filename (or will use fn1 if not present)\n");
fprintf(stderr, " ext's are used to deduce desired bitmap file formats\n");
gbm_init();
gbm_query_n_filetypes(&n_ft);
for ( ft = 0; ft < n_ft; ft++ )
{
GBMFT gbmft;
gbm_query_filetype(ft, &gbmft);
fprintf(stderr, " %s when ext in [%s]\n",
gbmft.short_name, gbmft.extensions);
}
gbm_deinit();
fprintf(stderr, " opt's bitmap format specific options\n");
exit(1);
}
/*...e*/
/*...smain:0:*/
int main(int argc, char *argv[])
{
BOOLEAN horz = FALSE, vert = FALSE, trans = FALSE;
char fn_src[500+1], fn_dst[500+1], *opt_src, *opt_dst;
int fd, ft_src, ft_dst, i, stride, bytes, flag;
GBM_ERR rc;
GBMFT gbmft;
GBM gbm;
GBMRGB gbmrgb[0x100];
byte *data;
for ( i = 1; i < argc; i++ )
{
if ( argv[i][0] != '-' )
break;
else if ( argv[i][1] == '-' )
{ ++i; break; }
switch ( argv[i][1] )
{
case 'h': horz = TRUE; break;
case 'v': vert = TRUE; break;
case 't': trans = TRUE; break;
default: usage(); break;
}
}
if ( i == argc )
usage();
strcpy(fn_src, argv[i++]);
strcpy(fn_dst, ( i == argc ) ? fn_src : argv[i++]);
if ( i < argc )
usage();
if ( (opt_src = strchr(fn_src, ',')) != NULL )
*opt_src++ = '\0';
else
opt_src = "";
if ( (opt_dst = strchr(fn_dst, ',')) != NULL )
*opt_dst++ = '\0';
else
opt_dst = "";
gbm_init();
if ( gbm_guess_filetype(fn_src, &ft_src) != GBM_ERR_OK )
fatal("can't guess bitmap file format for %s", fn_src);
if ( gbm_guess_filetype(fn_dst, &ft_dst) != GBM_ERR_OK )
fatal("can't guess bitmap file format for %s", fn_dst);
if ( (fd = gbm_io_open(fn_src, O_RDONLY|O_BINARY)) == -1 )
fatal("can't open %s", fn_src);
if ( (rc = gbm_read_header(fn_src, fd, ft_src, &gbm, opt_src)) != GBM_ERR_OK )
{
gbm_io_close(fd);
fatal("can't read header of %s: %s", fn_src, gbm_err(rc));
}
gbm_query_filetype(ft_dst, &gbmft);
switch ( gbm.bpp )
{
case 24: flag = GBM_FT_W24; break;
case 8: flag = GBM_FT_W8; break;
case 4: flag = GBM_FT_W4; break;
case 1: flag = GBM_FT_W1; break;
}
if ( (gbmft.flags & flag) == 0 )
{
gbm_io_close(fd);
fatal("output bitmap format %s does not support writing %d bpp data",
gbmft.short_name, gbm.bpp);
}
if ( (rc = gbm_read_palette(fd, ft_src, &gbm, gbmrgb)) != GBM_ERR_OK )
{
gbm_io_close(fd);
fatal("can't read palette of %s: %s", fn_src, gbm_err(rc));
}
stride = ( ((gbm.w * gbm.bpp + 31)/32) * 4 );
bytes = stride * gbm.h;
if ( (data = malloc((size_t) bytes)) == NULL )
{
gbm_io_close(fd);
fatal("out of memory allocating %d bytes for bitmap", bytes);
}
if ( (rc = gbm_read_data(fd, ft_src, &gbm, data)) != GBM_ERR_OK )
{
gbm_io_close(fd);
fatal("can't read bitmap data of %s: %s", fn_src, gbm_err(rc));
}
gbm_io_close(fd);
if ( vert )
if ( !gbm_ref_vert(&gbm, data) )
fatal("unable to reflect vertically");
if ( horz )
if ( !gbm_ref_horz(&gbm, data) )
fatal("unable to reflect horizontally");
if ( trans )
{
int t, stride_t = ((gbm.h * gbm.bpp + 31) / 32) * 4;
byte *data_t;
if ( (data_t = malloc((size_t) (gbm.w * stride_t))) == NULL )
fatal("out of memory allocating %u bytes", gbm.w * stride_t);
gbm_transpose(&gbm, data, data_t);
t = gbm.w; gbm.w = gbm.h; gbm.h = t;
free(data);
data = data_t;
}
if ( (fd = gbm_io_create(fn_dst, O_WRONLY|O_BINARY)) == -1 )
fatal("can't create %s", fn_dst);
if ( (rc = gbm_write(fn_dst, fd, ft_dst, &gbm, gbmrgb, data, opt_dst)) != GBM_ERR_OK )
{
gbm_io_close(fd);
remove(fn_dst);
fatal("can't write %s: %s", fn_dst, gbm_err(rc));
}
gbm_io_close(fd);
free(data);
gbm_deinit();
return 0;
}
/*...e*/