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-rw-r--r--util/szap/femon.c149
1 files changed, 149 insertions, 0 deletions
diff --git a/util/szap/femon.c b/util/szap/femon.c
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+/* femon -- monitor frontend status
+ *
+ * Copyright (C) 2003 convergence GmbH
+ * Johannes Stezenbach <js@convergence.de>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <limits.h>
+#include <string.h>
+#include <errno.h>
+#include <sys/ioctl.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/poll.h>
+#include <fcntl.h>
+#include <time.h>
+#include <unistd.h>
+
+#include <stdint.h>
+#include <sys/time.h>
+
+#include <linux/dvb/frontend.h>
+
+#ifndef TRUE
+#define TRUE (1==1)
+#endif
+#ifndef FALSE
+#define FALSE (1==0)
+#endif
+
+
+#define FRONTENDDEVICE "/dev/dvb/adapter%d/frontend%d"
+
+static char *usage_str =
+ "\nusage: femon [options]\n"
+ " -a number : use given adapter (default 0)\n"
+ " -f number : use given frontend (default 0)\n\n";
+
+
+static void usage(void)
+{
+ fprintf(stderr, usage_str);
+ exit(1);
+}
+
+
+static
+int check_frontend (int fe_fd)
+{
+ fe_status_t status;
+ uint16_t snr, signal;
+ uint32_t ber, uncorrected_blocks;
+
+ do {
+ ioctl(fe_fd, FE_READ_STATUS, &status);
+ ioctl(fe_fd, FE_READ_SIGNAL_STRENGTH, &signal);
+ ioctl(fe_fd, FE_READ_SNR, &snr);
+ ioctl(fe_fd, FE_READ_BER, &ber);
+ ioctl(fe_fd, FE_READ_UNCORRECTED_BLOCKS, &uncorrected_blocks);
+
+ printf ("status %02x | signal %04x | snr %04x | ber %08x | unc %08x | ",
+ status, signal, snr, ber, uncorrected_blocks);
+
+ if (status & FE_HAS_LOCK)
+ printf("FE_HAS_LOCK");
+
+ printf("\n");
+ usleep(1000000);
+ } while (1);
+
+ return 0;
+}
+
+
+static
+int do_mon(unsigned int adapter, unsigned int frontend)
+{
+ char fedev[128];
+ int fefd;
+ int result;
+ struct dvb_frontend_info fe_info;
+
+ snprintf(fedev, sizeof(fedev), FRONTENDDEVICE, adapter, frontend);
+ printf("using '%s'\n", fedev);
+
+ if ((fefd = open(fedev, O_RDONLY | O_NONBLOCK)) < 0) {
+ perror("opening frontend failed");
+ return FALSE;
+ }
+
+ result = ioctl(fefd, FE_GET_INFO, &fe_info);
+
+ if (result < 0) {
+ perror("ioctl FE_GET_INFO failed");
+ close(fefd);
+ return FALSE;
+ }
+
+ printf("FE: %s (%s)\n", fe_info.name, fe_info.type == FE_QPSK ? "SAT" :
+ fe_info.type == FE_QAM ? "CABLE": "TERRESTRIAL");
+
+ check_frontend (fefd);
+
+ close(fefd);
+
+ return result;
+}
+
+int main(int argc, char *argv[])
+{
+ unsigned int adapter = 0, frontend = 0;
+ int opt;
+
+ while ((opt = getopt(argc, argv, "hlrn:a:f:d:")) != -1) {
+ switch (opt)
+ {
+ case '?':
+ case 'h':
+ default:
+ usage();
+ case 'a':
+ adapter = strtoul(optarg, NULL, 0);
+ break;
+ case 'f':
+ frontend = strtoul(optarg, NULL, 0);
+ }
+ }
+
+ do_mon(adapter, frontend);
+
+ return FALSE;
+}
+