libnjb 2.2.6
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#include "common.h" /* For isspace() */ #include <ctype.h> static void usage (void) { fprintf(stderr, "usage: setpbm [ -D debuglvl ] <path>\n"); exit(1); } static void skip_whitespaces (FILE *f) { int c; while (!feof (f)) { c = fgetc (f); if (!isspace (c)) { if (c == '#') { // Skip comment while (!feof (f) && (c = fgetc (f)) != '\n') ; } else { ungetc (c, f); break; } } } } static int verify_pbm (FILE *f, int x, int y) { u_int16_t magic; unsigned int width, height; int c; if (fread (&magic, 1, 2, f) < 2) { return -1; } if (magic != 0x3450) { return -1; } skip_whitespaces(f); width = 0; fscanf (f, "%u", &width); if (width != x) { return -1; } skip_whitespaces (f); fscanf (f, "%u", &height); if (height != y) { return -1; } c = fgetc (f); if (!isspace (c)) { return -1; } return 0; } int main(int argc, char **argv) { njb_t njbs[NJB_MAX_DEVICES], *njb; int n, opt, debug; extern int optind; extern char *optarg; char *path; int x, y, bytes; debug = 0; while ( (opt = getopt(argc, argv, "D:")) != -1 ) { switch (opt) { case 'D': debug= atoi(optarg); break; default: usage(); } } argc -= optind; argv += optind; if ( argc != 1 ) usage(); if ( debug ) NJB_Set_Debug(debug); path= argv[0]; printf("Uploading image:\n"); printf("Filename: %s\n", path); if (NJB_Discover(njbs, 0, &n) == -1) { fprintf(stderr, "could not locate any jukeboxes\n"); return 1; } if ( n == 0 ) { fprintf(stderr, "no NJB devices found\n"); return 0; } njb = njbs; if ( NJB_Open(njb) == -1 ) { NJB_Error_Dump(njb,stderr); return 1; } NJB_Capture(njb); /* Get the bitmap dimensions */ if ( NJB_Get_Bitmap_Dimensions(njb, &x, &y, &bytes) == -1 ) { printf("This device does not support setting the bitmap."); NJB_Error_Dump(njb, stderr); } else { FILE *f; unsigned char data[1088]; if ( (f = fopen(path, "rb")) == NULL) { printf("Could not open bitmap file.\n"); exit(-1); } if (verify_pbm(f, x, y) == -1) { printf("Bad bitmap dimensions or bad file.\n"); fclose (f); exit(-1); } if ( fread (data, 1, 1088, f) < 1088 ) { printf("Could not read in bitmap file.\n"); fclose (f); exit(-1); } fclose (f); if ( NJB_Set_Bitmap(njb, data) == -1 ) { NJB_Error_Dump(njb, stderr); } } NJB_Release(njb); NJB_Close (njb); return 0; }