Add ncurses joystick support

[petitboot] / ui / common / joystick.c

diff --git a/ui/common/joystick.c b/ui/common/joystick.c
new file mode 100644 (file)
index 0000000..94c85fe
--- /dev/null
+++ b/ui/common/joystick.c
@@ -0,0 +1,106 @@
+/*
+ *  Copyright (C) 2009 Sony Computer Entertainment Inc.
+ *  Copyright 2009 Sony Corp.
+ *
+ *  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; version 2 of the License.
+ *
+ *  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
+ */
+
+#if defined(HAVE_CONFIG_H)
+#include "config.h"
+#endif
+
+#define _GNU_SOURCE
+#include <assert.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <string.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+
+#include "log/log.h"
+#include "talloc/talloc.h"
+#include "joystick.h"
+
+/**
+ * pjs_process_event - Read joystick event and map to UI key code.
+ *
+ * Returns a map routine UI key code or zero.
+ */
+
+int pjs_process_event(const struct pjs *pjs)
+{
+       int result;
+       struct js_event e;
+
+       assert(pjs->fd);
+
+       result = read(pjs->fd, &e, sizeof(e));
+
+       if (result != sizeof(e)) {
+               pb_log("%s: read failed: %s\n", __func__, strerror(errno));
+               return 0;
+       }
+
+       return pjs->map(&e);
+}
+
+/**
+ * pjs_destructor - The talloc destructor for a joystick handler.
+ */
+
+static int pjs_destructor(void *arg)
+{
+       struct pjs *pjs = pjs_from_arg(arg);
+
+       close(pjs->fd);
+       pjs->fd = 0;
+
+       return 0;
+}
+
+/**
+ * pjs_init - Initialize the joystick event handler.
+ */
+
+struct pjs *pjs_init(void *ctx, int (*map)(const struct js_event *))
+{
+       static const char dev_name[] = "/dev/input/js0";
+       struct pjs *pjs;
+
+       pjs = talloc_zero(ctx, struct pjs);
+
+       if (!pjs)
+               return NULL;
+
+       pjs->map = map;
+       pjs->fd = open(dev_name, O_RDONLY | O_NONBLOCK);
+
+       if (pjs->fd < 0) {
+               pb_log("%s: open %s failed: %s\n", __func__, dev_name,
+                       strerror(errno));
+               goto out_err;
+       }
+
+       talloc_set_destructor(pjs, pjs_destructor);
+
+       pb_log("%s: using %s\n", __func__, dev_name);
+
+       return pjs;
+
+out_err:
+       close(pjs->fd);
+       pjs->fd = 0;
+       talloc_free(pjs);
+       return NULL;
+}