Add radio tuning test app

[rdstmc.git] / tuning / tuning.c

diff --git a/tuning/tuning.c b/tuning/tuning.c
new file mode 100644 (file)
index 0000000..a4610dc
--- /dev/null
+++ b/tuning/tuning.c
@@ -0,0 +1,152 @@
+#include <stdio.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <sys/ioctl.h>
+#include <unistd.h>
+#include <string.h>
+#include <time.h>
+
+#include <linux/videodev2.h>
+
+#include <sqlite3.h>
+
+#include "rds.h"
+#include "tmc.h"
+
+sqlite3 *lcl_db;
+int OutputFlags;
+
+unsigned char pi_received = 0;
+unsigned char sid_received = 0;
+
+void test_rds_PI_cb(unsigned short PI, unsigned char ccode, unsigned char ptype, unsigned char pref, void *udata)
+{
+       printf("New PI=%d ccode=%X ptype=%X '%s' '%s' pref=%d\n", PI, ccode, ptype, ptype_stext[ptype], ptype_ltext[ptype], pref);
+       pi_received = 1;
+}
+
+void test_rds_sname_cb(char *sname, void *udata)
+{
+       printf("RDS sname='%s'\n", sname);
+       sid_received = 1;
+}
+
+
+void station_scan(int fd)
+{
+int ret;
+struct v4l2_frequency v4lfreq;
+struct v4l2_tuner v4ltuner;
+unsigned short rdsgroup[4];
+
+       v4ltuner.index = 0;
+       ret = ioctl(fd, VIDIOC_G_TUNER, &v4ltuner);
+       if (ret < 0)
+               return;
+       printf("tuner=%d\n", v4ltuner.index);
+       if (v4ltuner.type == V4L2_TUNER_RADIO)
+               printf("  is a radio tuner\n");
+       printf("name='%s'\n", v4ltuner.name);
+
+       v4lfreq.tuner = v4ltuner.index;
+       memset(&v4lfreq.reserved, 0, 32);
+       ret = ioctl(fd, VIDIOC_G_FREQUENCY, &v4lfreq);
+       if (ret < 0)
+               return;
+
+       v4lfreq.frequency = v4ltuner.rangelow;
+       while (v4lfreq.frequency <= v4ltuner.rangehigh) {
+                       ret = ioctl(fd, VIDIOC_S_FREQUENCY, &v4lfreq);
+                       if (ret < 0)
+                               break;
+                       ret = ioctl(fd, VIDIOC_G_FREQUENCY, &v4lfreq);
+                       if (ret < 0)
+                               break;
+                               ret = ioctl(fd, VIDIOC_G_TUNER, &v4ltuner);
+                       if (ret < 0)
+                               break;
+                       printf("%lf %d %d %s %s\n", (double)v4lfreq.frequency * 62.5 / 1000000,
+                               v4lfreq.frequency,
+                               v4ltuner.signal,
+                               v4ltuner.rxsubchans & V4L2_TUNER_SUB_STEREO ? "stereo" : "mono",
+                               v4ltuner.rxsubchans & V4L2_TUNER_SUB_RDS ? "RDS" : "noRDS");
+
+                       if (v4ltuner.signal > 30000) {
+                               /* seems to be a strong signal, so try RDS */
+                               pi_received = 0;
+                               sid_received = 0;
+                               rds_radio_retuned();
+                               while (pi_received == 0 || sid_received == 0) {
+                                       if (rds_receive_group(fd, rdsgroup)) {
+                                               /* group complete, start decode */
+                                               rds_decode_group(rdsgroup);
+                   }
+                }
+                       }
+
+                       v4lfreq.frequency += 1600; /* 1600 for .1MHz steps, 800 for 0.05MHz */
+       }
+}
+
+
+int main(int argc, char **argv)
+{
+int fd, ret;
+struct v4l2_capability v4lcap;
+struct v4l2_frequency v4lfreq;
+struct v4l2_tuner v4ltuner;
+
+       fd = open ("/dev/radio0", O_RDONLY);
+       if (fd < 0) {
+               printf("error opening fd\n");
+               perror("open");
+               return 1;
+       }
+
+       ret = ioctl(fd, VIDIOC_QUERYCAP, &v4lcap);
+       if (ret < 0)
+               return 1;
+
+       printf("driver = '%s'\n", v4lcap.driver);
+       printf("card = '%s'\n", v4lcap.card);
+       printf("bus_info = '%s'\n", v4lcap.bus_info);
+       printf("cap && RADIO = %s\n", (v4lcap.capabilities & V4L2_CAP_RADIO) ? "yes" : "no");
+       printf("cap && TUNER = %s\n", (v4lcap.capabilities & V4L2_CAP_TUNER) ? "yes" : "no");
+       printf("cap && RDS = %s\n", (v4lcap.capabilities & V4L2_CAP_RDS_CAPTURE) ? "yes" : "no");
+
+       v4ltuner.index = 0;
+       ret = ioctl(fd, VIDIOC_G_TUNER, &v4ltuner);
+       if (ret < 0)
+               return 1;
+       printf("tuner=%d\n", v4ltuner.index);
+       if (v4ltuner.type == V4L2_TUNER_RADIO)
+               printf("  is a radio tuner\n");
+       printf("name='%s'\n", v4ltuner.name);
+
+       v4lfreq.tuner = v4ltuner.index;
+       memset(&v4lfreq.reserved, 0, 32);
+       ret = ioctl(fd, VIDIOC_G_FREQUENCY, &v4lfreq);
+
+       if (ret >= 0) {
+               if (v4ltuner.capability & V4L2_TUNER_CAP_LOW) {
+                       printf("range %3.2lf MHz - %3.2lf MHz\n", (double)v4ltuner.rangelow * 62.5 / 1000000, (double)v4ltuner.rangehigh * 62.5 / 1000000);
+                       printf("freq = %3.2lf MHz\n", (double)v4lfreq.frequency * 62.5 / 1000000);
+               } else
+                       printf("freq = %lf kHz\n", (double)v4lfreq.frequency * 62.5);
+       }
+       printf("signal: %d %s\n", v4ltuner.signal, v4ltuner.rxsubchans & V4L2_TUNER_SUB_STEREO ? "stereo" : "mono");
+       printf("RDS signal present: %s\n", v4ltuner.rxsubchans & V4L2_TUNER_SUB_RDS ? "yes" : "no");
+
+       if (argc > 1 && strcmp(argv[1], "-s")==0) {
+               rds_init();
+        tmc_init();
+        rds_set_sname_cb(test_rds_sname_cb, NULL);
+        rds_set_PI_cb(test_rds_PI_cb, NULL);
+               station_scan(fd);
+       }
+
+       close(fd);
+
+return 0;
+}