liboda: Add initial input subsystem

This commit introduces the initial input subsystem and adds basic
keyboard handling via a callback defined by the compositor.

Signed-off-by: Ian Moffett <ian@osmora.org>

1 files changed, 61 insertions, 0 deletions

diff --git a/lib/liboda/src/input.c b/lib/liboda/src/input.c
new file mode 100644
index 0000000..88c4256
--- /dev/null
+++ b/lib/liboda/src/input.c
@@ -0,0 +1,61 @@
+/*
+ * Copyright (c) 2023-2025 Ian Marco Moffett and the Osmora Team.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ *    this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of Hyra nor the names of its
+ *    contributors may be used to endorse or promote products derived from
+ *    this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <sys/errno.h>
+#include <liboda/oda.h>
+#include <liboda/input.h>
+#include <stdint.h>
+#include <stdio.h>
+
+/*
+ * Dispatch keyboard events. This is typically
+ * called in an event loop so that keyboard events
+ * are handled per iteration.
+ *
+ * @kbd: Keyboard to monitor
+ */
+int
+oda_kbd_dispatch(struct oda_kbd *kbd)
+{
+    struct oda_key key;
+    int input;
+
+    if (kbd == NULL) {
+        return -EINVAL;
+    }
+
+    /* Attempt to grab the input */
+    if ((input = getchar()) < 0) {
+        return -EAGAIN;
+    }
+
+    key.scancode = ODA_SCANCODE(input);
+    key.ch = ODA_KEYCHAR(input);
+    return kbd->handle_keyev(kbd, &key);
+}