diff options
Diffstat (limited to 'converter/ppm/gouldtoppm.c')
| -rw-r--r-- | converter/ppm/gouldtoppm.c | 149 |
1 files changed, 77 insertions, 72 deletions
diff --git a/converter/ppm/gouldtoppm.c b/converter/ppm/gouldtoppm.c index 5db7c51a..6cc7726c 100644 --- a/converter/ppm/gouldtoppm.c +++ b/converter/ppm/gouldtoppm.c @@ -22,101 +22,106 @@ main( argc, argv ) int argc; char *argv[]; { - FILE *ifp; - pixel *pixrow; + FILE *ifp; + pixel *pixrow; - unsigned long cols, nlines, bytesperline, bitsperpixel, NB, x, y; - unsigned char pbuffer[4]; + unsigned long cols, nlines, bytesperline, bitsperpixel, NB, x, y; + unsigned char pbuffer[4]; - int color_type; + int color_type; - ppm_init( &argc, argv ); + ppm_init( &argc, argv ); - if ( argc > 2 ) - pm_usage( "[gouldfile]" ); + if ( argc > 2 ) + pm_usage( "[gouldfile]" ); - if ( argc == 2 ) - ifp = pm_openr( argv[1] ); - else - ifp = stdin; + if ( argc == 2 ) + ifp = pm_openr( argv[1] ); + else + ifp = stdin; - getgouldheader( ifp, &cols, &nlines, &bytesperline, &bitsperpixel, &NB); + getgouldheader( ifp, &cols, &nlines, &bytesperline, &bitsperpixel, &NB); - ppm_writeppminit(stdout, cols, nlines, MAXVAL, 0); + ppm_writeppminit(stdout, cols, nlines, MAXVAL, 0); - color_type = bitsperpixel/8; - if (color_type == 0) color_type = NB; + color_type = bitsperpixel/8; + if (color_type == 0) color_type = NB; - pixrow = ppm_allocrow(cols); + pixrow = ppm_allocrow(cols); - for (y = 0; y < nlines; ++y) - { - for (x = 0; x < cols; ++x) - { - switch (color_type) - { - case 0: - pm_error("incorrect color type" ); + for (y = 0; y < nlines; ++y) + { + for (x = 0; x < cols; ++x) + { + switch (color_type) + { + case 0: + pm_error("incorrect color type" ); - case 1: - fread(pbuffer, 1, 1, ifp); - PPM_ASSIGN( pixrow[x], pbuffer[0], pbuffer[0], pbuffer[0]); - break; + case 1: + fread(pbuffer, 1, 1, ifp); + PPM_ASSIGN( pixrow[x], pbuffer[0], pbuffer[0], pbuffer[0]); + break; - case 2: - fread(pbuffer, 2, 1, ifp); - PPM_ASSIGN( pixrow[x], pbuffer[0], pbuffer[1], pbuffer[1]); - break; + case 2: + fread(pbuffer, 2, 1, ifp); + PPM_ASSIGN( pixrow[x], pbuffer[0], pbuffer[1], pbuffer[1]); + break; - case 3: - fread(pbuffer, 3, 1, ifp); - PPM_ASSIGN( pixrow[x], pbuffer[0], pbuffer[1], pbuffer[2]); - break; + case 3: + fread(pbuffer, 3, 1, ifp); + PPM_ASSIGN( pixrow[x], pbuffer[0], pbuffer[1], pbuffer[2]); + break; - default : - fread(pbuffer, 3, 1, ifp); - PPM_ASSIGN( pixrow[x], pbuffer[0], pbuffer[1], pbuffer[2]); - break; + default : + fread(pbuffer, 3, 1, ifp); + PPM_ASSIGN( pixrow[x], pbuffer[0], pbuffer[1], pbuffer[2]); + break; - } /* switch */ - } - ppm_writeppmrow(stdout, pixrow, cols, MAXVAL, 0); - } + } /* switch */ + } + ppm_writeppmrow(stdout, pixrow, cols, MAXVAL, 0); + } - pm_close(ifp); - pm_close(stdout); + pm_close(ifp); + pm_close(stdout); - exit(0); + exit(0); } + + static void getgouldheader( infile, cols, nlines, bytesperline, bitsperpixel, NB) FILE *infile; unsigned long *cols, *nlines, *bytesperline, *bitsperpixel, *NB; { - unsigned long nlines_new, bytesperline_new, numheaderrec; - unsigned char headerblk[512]; - int i; - - if (fread(headerblk, 512, 1, infile) == 0) - pm_error("cannot read gould header" ); - - *nlines = (headerblk[3]<<8) | headerblk[2]; - *bytesperline = (headerblk[5]<<8) | headerblk[4]; - *bitsperpixel = (headerblk[7]<<8) | headerblk[6]; - numheaderrec = (headerblk[9]<<8) | headerblk[8]; - nlines_new = (headerblk[15]<<24)| (headerblk[14]<<16) | (headerblk[13]<<8) | (headerblk[12]); - bytesperline_new = (headerblk[19]<<24)| (headerblk[18]<<16) | (headerblk[17]<<8) | (headerblk[16]); - *NB = (headerblk[23]<<24)| (headerblk[22]<<16) | (headerblk[21]<<8) | (headerblk[20]); - - if (numheaderrec > 1) - for (i = 1 ; i <numheaderrec; ++i) - if (fread(headerblk, 512, 1, infile) == 0) - pm_error("cannot read gould header(2nd)" ); - - if (*nlines==0) *nlines=nlines_new; - if (*bytesperline==0) *bytesperline=bytesperline_new; - - *cols = (*bytesperline)*8 / (*bitsperpixel); + unsigned long nlines_new, bytesperline_new, numheaderrec; + unsigned char headerblk[512]; + int i; + + if (fread(headerblk, 512, 1, infile) == 0) + pm_error("cannot read gould header" ); + + *nlines = (headerblk[3]<<8) | headerblk[2]; + *bytesperline = (headerblk[5]<<8) | headerblk[4]; + *bitsperpixel = (headerblk[7]<<8) | headerblk[6]; + numheaderrec = (headerblk[9]<<8) | headerblk[8]; + nlines_new = (headerblk[15]<<24)| (headerblk[14]<<16) | (headerblk[13]<<8) | (headerblk[12]); + bytesperline_new = (headerblk[19]<<24)| (headerblk[18]<<16) | (headerblk[17]<<8) | (headerblk[16]); + *NB = (headerblk[23]<<24)| (headerblk[22]<<16) | (headerblk[21]<<8) | (headerblk[20]); + + if (numheaderrec > 1) + for (i = 1 ; i <numheaderrec; ++i) + if (fread(headerblk, 512, 1, infile) == 0) + pm_error("cannot read gould header(2nd)" ); + + if (*nlines==0) *nlines=nlines_new; + if (*bytesperline==0) *bytesperline=bytesperline_new; + + *cols = (*bytesperline)*8 / (*bitsperpixel); } + + + |