diff options
Diffstat (limited to 'converter/other/pnmtorle.c')
| -rw-r--r-- | converter/other/pnmtorle.c | 198 |
1 files changed, 99 insertions, 99 deletions
diff --git a/converter/other/pnmtorle.c b/converter/other/pnmtorle.c index b7834e89..8908c356 100644 --- a/converter/other/pnmtorle.c +++ b/converter/other/pnmtorle.c @@ -59,8 +59,8 @@ static gray maxval; * Read the pnm image file header. */ static void -read_pnm_header() -{ +read_pnm_header(void) { + pnm_readpnminit(fp, &width, &height, &maxval, &format); switch (format) { case PBM_FORMAT: @@ -87,12 +87,12 @@ read_pnm_header() if (do_alpha) VPRINTF(stderr, "Computing alpha channel...\n"); } -/*----------------------------------------------------------------------------- - * Write the rle image file header. - */ + + + static void -write_rle_header() -{ +write_rle_header(void) { + hdr.xmin = 0; hdr.xmax = width-1; hdr.ymin = 0; @@ -120,101 +120,106 @@ write_rle_header() } rle_put_setup(&hdr); } -/*----------------------------------------------------------------------------- - * Write the rle data portion of the file. - */ + + + static void -write_rle_data() -{ - register int x; - register int scan; - register xel *xelrow, *pP; - rle_pixel ***scanlines, **scanline; -/* - * Allocate some memory. - */ - /*xelrow = pnm_allowcrow(width);*/ - xelrow = (xel*) pm_allocrow( width, sizeof(xel) ); +write_rle_data(void) { + + unsigned int scan; + xel * xelrow; + rle_pixel *** scanlines; + + MALLOCARRAY(xelrow, width); MALLOCARRAY(scanlines, height); - RLE_CHECK_ALLOC( hdr.cmd, scanlines, "scanline pointers" ); - for ( scan = 0; scan < height; scan++ ) - RLE_CHECK_ALLOC( hdr.cmd, (rle_row_alloc(&hdr, &scanlines[scan]) >= 0), - "pixel memory" ); -/* - * Loop through the pnm files image window, read data and flip vertically. - */ + RLE_CHECK_ALLOC(hdr.cmd, scanlines, "scanline pointers"); + + for (scan = 0; scan < height; ++scan) { + int rc; + rc = rle_row_alloc(&hdr, &scanlines[scan]); + RLE_CHECK_ALLOC(hdr.cmd, rc >= 0, "pixel memory"); + } + /* Loop through the pnm files image window, read data and flip vertically. + */ switch (format) { case PBM_FORMAT: - case RPBM_FORMAT: - for (scan = 0; scan < height; scan++) { - scanline = scanlines[height - scan - 1]; + case RPBM_FORMAT: { + unsigned int scan; + for (scan = 0; scan < height; ++scan) { + rle_pixel ** const scanline = scanlines[height - scan - 1]; + unsigned int col; pnm_readpnmrow(fp, xelrow, width, maxval, format); - for (x = 0, pP = xelrow; x < width; x++, pP++) { - scanline[RLE_RED][x] = (PNM_GET1(*pP) ? 255 : 0); - if (do_alpha) { - scanline[RLE_ALPHA][x] = scanline[RLE_RED][x]; - } + for (col = 0; col < width; ++col) { + scanline[RLE_RED][col] = PNM_GET1(xelrow[col]) ? 255 : 0; + if (do_alpha) + scanline[RLE_ALPHA][col] = scanline[RLE_RED][col]; } } - break; + } break; case PGM_FORMAT: - case RPGM_FORMAT: - for (scan = 0; scan < height; scan++) { - scanline = scanlines[height - scan - 1]; + case RPGM_FORMAT: { + unsigned int scan; + for (scan = 0; scan < height; ++scan) { + rle_pixel ** const scanline = scanlines[height - scan - 1]; + unsigned int col; pnm_readpnmrow(fp, xelrow, width, maxval, format); - for (x = 0, pP = xelrow; x < width; x++, pP++) { - scanline[RLE_RED][x] = PNM_GET1(*pP); - if (do_alpha) { - scanline[RLE_ALPHA][x] = (scanline[RLE_RED][x] ? 255 : 0); - } + for (col = 0; col < width; ++col) { + scanline[RLE_RED][col] = PNM_GET1(xelrow[col]); + if (do_alpha) + scanline[RLE_ALPHA][col] = + scanline[RLE_RED][col] ? 255 : 0; } } - break; + } break; case PPM_FORMAT: - case RPPM_FORMAT: + case RPPM_FORMAT: { + unsigned int scan; for (scan = 0; scan < height; scan++) { - scanline = scanlines[height - scan - 1]; + rle_pixel ** const scanline = scanlines[height - scan - 1]; + unsigned int col; pnm_readpnmrow(fp, xelrow, width, maxval, format); - for (x = 0, pP = xelrow; x < width; x++, pP++) { - scanline[RLE_RED][x] = PPM_GETR(*pP); - scanline[RLE_GREEN][x] = PPM_GETG(*pP); - scanline[RLE_BLUE][x] = PPM_GETB(*pP); - if (do_alpha) { - scanline[RLE_ALPHA][x] = (scanline[RLE_RED][x] || - scanline[RLE_GREEN][x] || - scanline[RLE_BLUE][x] ? 255 : 0); - } + for (col = 0; col < width; ++col) { + scanline[RLE_RED][col] = PPM_GETR(xelrow[col]); + scanline[RLE_GREEN][col] = PPM_GETG(xelrow[col]); + scanline[RLE_BLUE][col] = PPM_GETB(xelrow[col]); + if (do_alpha) + scanline[RLE_ALPHA][col] = + (scanline[RLE_RED][col] || + scanline[RLE_GREEN][col] || + scanline[RLE_BLUE][col] ? 255 : 0); } } - break; + } break; } -/* - * Write out data in URT order (bottom to top). - */ - for ( scan = 0; scan < height; scan++ ) { + /* Write out data in URT order (bottom to top). */ + for (scan = 0; scan < height; ++scan) rle_putrow(scanlines[scan], width, &hdr); - rle_row_free( &hdr, scanlines[scan] ); - } - free( scanlines ); + + for (scan = 0; scan < height; ++scan) + rle_row_free(&hdr, scanlines[scan]); + free(scanlines); + free(xelrow); VPRINTF(stderr, "Done -- write eof to RLE data.\n"); rle_puteof(&hdr); } + + int -main(argc, argv) - int argc; - char **argv; -{ - char *pnmname = NULL, *outname = NULL; - int oflag, c; +main(int argc, char ** argv) { + + const char * pnmname; + const char * outname; + int oflag; pnm_init(&argc, argv); -/* - * Get those options. - */ + pnmname = NULL; /* initial value */ + outname = NULL; /* initial value */ + + /* Get those options. */ if (!scanargs(argc,argv, "% v%- h%- a%- o%-outfile!s pnmfile%s\n(\ \tConvert a PNM file to URT RLE format.\n\ @@ -228,37 +233,32 @@ main(argc, argv) &pnmname)) exit(-1); - hdr = *rle_hdr_init( (rle_hdr *)NULL ); - rle_names( &hdr, cmd_name( argv ), outname, 0 ); -/* - * Open the file. - */ + hdr = *rle_hdr_init(NULL); + rle_names(&hdr, cmd_name(argv), outname, 0); + + /* Open the file. */ if (pnmname == NULL) { - fp = stdin; - } - else { + fp = pm_openr("-"); + } else { fp = pm_openr(pnmname); } hdr.rle_file = rle_open_f( hdr.cmd, outname, "wb" ); - while ( (c = getc( fp )) != EOF ) { - ungetc( c, fp ); -/* - * Read the PPM file header. - */ + + if (header) read_pnm_header(); - if (header) - break; -/* - * Write the rle file header. - */ - rle_addhist(argv, (rle_hdr *)NULL, &hdr); - write_rle_header(); -/* - * Write the rle file data. - */ - write_rle_data(); + else { + int eof; + for (eof = 0; !eof; ) { + read_pnm_header(); + rle_addhist(argv, NULL, &hdr); + write_rle_header(); + write_rle_data(); + + pnm_nextimage(fp, &eof); + } } - fclose(fp); + pm_close(fp); + return 0; } |