X-Git-Url: https://git.karo-electronics.de/?p=rdstmc.git;a=blobdiff_plain;f=tuning%2Ftuning.c;fp=tuning%2Ftuning.c;h=a4610dce366cf2460b101c40d7856d3109157d90;hp=0000000000000000000000000000000000000000;hb=068df065c2148fd7932e4b4c3f67bdf59b70df4b;hpb=d4f8c46bc4a5cad443611ac86bfe0a83a9d1b49b

diff --git a/tuning/tuning.c b/tuning/tuning.c
new file mode 100644
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;
+}