Add test tools for testing the sliced VBI V4L2 API.

From: Hans Verkuil <hverkuil@xs4all.nl>

- Allow ioctl-test.c to be build again.
- Add sliced-vbi-detect to detect which VBI types are broadcast.
- Add sliced-vbi-test to read the VBI packets as they arrive.

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>

1 files changed, 146 insertions, 0 deletions

diff --git a/test/sliced-vbi-detect.c b/test/sliced-vbi-detect.c
new file mode 100644
index 000000000..3fe33f6cc
--- /dev/null
+++ b/test/sliced-vbi-detect.c
@@ -0,0 +1,146 @@
+/*
+    Sliced vbi autodetection demonstration utility
+    Copyright (C) 2004  Hans Verkuil  <hverkuil@xs4all.nl>
+
+    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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+/* This simple utility detects which VBI types are transmitted on
+   each field/line. It serves both as example source and as a tool to
+   test the sliced VBI implementation.
+
+   Usage: sliced-vbi-detect [device]
+   Without a device name as argument it will fallback to /dev/vbi0.
+ */
+
+#include <unistd.h>
+#include <features.h>		/* Uses _GNU_SOURCE to define getsubopt in stdlib.h */
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <inttypes.h>
+#include <getopt.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <sys/ioctl.h>
+#include <sys/time.h>
+#include <math.h>
+#include <linux/types.h>
+
+#define __user
+#include <linux/videodev2.h>
+
+static void detect(int fh, struct v4l2_sliced_vbi_format *fmt)
+{
+	struct v4l2_sliced_vbi_data *buf = malloc(fmt->io_size);
+        int cnt;
+
+        for (cnt = 0; cnt < 5; cnt++) {
+		int size = read(fh, buf, fmt->io_size);
+		int i;
+
+		if (size <= 0) {
+                        printf("size = %d\n", size);
+			break;
+                }
+                if (cnt == 0)
+                        continue;
+		for (i = 0; i < size / sizeof(*buf); i++) {
+                        int field, line;
+
+                        line = buf[i].line;
+                        field = buf[i].field;
+                        if (buf[i].id == 0)
+                                continue;
+                        if (line < 0 || line >= 24) {
+                                printf("line %d out of range\n", line);
+                                free(buf);
+                                return;
+                        }
+                        fmt->service_lines[field][line] |= buf[i].id;
+		}
+	}
+        free(buf);
+}
+
+void v2s(int id)
+{
+        switch (id) {
+                case V4L2_SLICED_TELETEXT_B: printf(" TELETEXT"); break;
+                case V4L2_SLICED_CAPTION_525: printf(" CC"); break;
+                case V4L2_SLICED_WSS_625: printf(" WSS"); break;
+                case V4L2_SLICED_VPS: printf(" VPS"); break;
+                default: printf(" UNKNOWN %x", id); break;
+        }
+}
+
+int main(int argc, char **argv)
+{
+	char *device = "/dev/vbi0";
+	struct v4l2_format vbifmt;
+	struct v4l2_sliced_vbi_format vbiresult;
+	int fh;
+        int f, i, b;
+
+	if (argc == 2)
+                device = argv[1];
+        fh = open(device, O_RDONLY);
+
+        if (fh == -1) {
+                fprintf(stderr, "cannot open %s\n", device);
+                return 1;
+        }
+        memset(&vbiresult, 0, sizeof(vbiresult));
+        for (i = 0; i < 16; i++) {
+                int l;
+                int set = 0;
+
+                memset(&vbifmt, 0, sizeof(vbifmt));
+                vbifmt.type = V4L2_BUF_TYPE_SLICED_VBI_CAPTURE;
+                for (l = 0; l < 24; l++) {
+                        vbifmt.fmt.sliced.service_lines[0][l] = 1 << i;
+                        vbifmt.fmt.sliced.service_lines[1][l] = 1 << i;
+                }
+	        if (ioctl(fh, VIDIOC_S_FMT, &vbifmt) < 0) {
+                        if (errno == EINVAL)
+                                continue;
+                        perror("IVTV_IOC_S_VBI_FMT");
+                        exit(-1);
+                }
+                vbiresult.io_size = vbifmt.fmt.sliced.io_size;
+                for (l = 0; l < 24; l++) {
+                        set |= vbifmt.fmt.sliced.service_lines[0][l] | 
+                               vbifmt.fmt.sliced.service_lines[1][l];
+                }
+                detect(fh, &vbiresult);
+        }
+	close(fh);
+        for (f = 0; f < 2; f++) {
+                printf("Field %d:\n", f);
+                for (i = 6; i < 24; i++) {
+                        unsigned set = vbiresult.service_lines[f][i];
+
+                        printf("  Line %2d:", i);
+                        for (b = 0; b < 16; b++) {
+                                if (set & (1 << b)) 
+                                        v2s(1 << b);
+                        }
+                        printf("\n");
+                }
+        }
+	return 0;
+}