1 files changed, 95 insertions, 0 deletions

diff --git a/test/mtdev.c b/test/mtdev.c
new file mode 100644
index 0000000..995a4e2
--- /dev/null
+++ b/test/mtdev.c
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+/*****************************************************************************
+ *
+ * mtdev - MT device event converter (MIT license)
+ *
+ * Copyright (C) 2010 Henrik Rydberg <rydberg@euromail.se>
+ * Copyright (C) 2010 Canonical Ltd.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ ****************************************************************************/
+
+#include <mtdev-mapping.h>
+#include <stdio.h>
+#include <fcntl.h>
+
+/* year-proof millisecond event time */
+typedef __u64 mstime_t;
+
+static int use_event(const struct input_event *ev)
+{
+#if 0
+        return ev->type == EV_ABS && mtdev_is_absmt(ev->code);
+#else
+        return 1;
+#endif
+}
+
+static void print_event(const struct input_event *ev)
+{
+        static const mstime_t ms = 1000;
+        static int slot;
+        mstime_t evtime = ev->time.tv_usec / ms + ev->time.tv_sec * ms;
+        if (ev->type == EV_ABS && ev->code == ABS_MT_SLOT)
+                slot = ev->value;
+        fprintf(stderr, "%012llx %02d %01d %04x %d\n",
+                evtime, slot, ev->type, ev->code, ev->value);
+}
+
+static void loop_device(int fd)
+{
+        struct mtdev dev;
+        struct input_event ev;
+        int ret = mtdev_open(&dev, fd);
+        if (ret) {
+                fprintf(stderr, "error: could not open device: %d\n", ret);
+                return;
+        }
+        while (mtdev_pull(&dev, fd, 1) > 0) {
+                while (!mtdev_empty(&dev)) {
+                        mtdev_get(&dev, &ev);
+                        if (use_event(&ev))
+                                print_event(&ev);
+                }
+        }
+        mtdev_close(&dev);
+}
+
+int main(int argc, char *argv[])
+{
+        int fd;
+        if (argc < 2) {
+                fprintf(stderr, "Usage: mtdev <device>\n");
+                return -1;
+        }
+        fd = open(argv[1], O_RDONLY);
+        if (fd < 0) {
+                fprintf(stderr, "error: could not open device\n");
+                return -1;
+        }
+        if (ioctl(fd, EVIOCGRAB, 1)) {
+                fprintf(stderr, "error: could not grab the device\n");
+                return -1;
+        }
+        loop_device(fd);
+        ioctl(fd, EVIOCGRAB, 0);
+        close(fd);
+        return 0;
+}