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, 65 insertions, 0 deletions

diff --git a/lib/liboda/include/liboda/input.h b/lib/liboda/include/liboda/input.h
new file mode 100644
index 0000000..9906329
--- /dev/null
+++ b/lib/liboda/include/liboda/input.h
@@ -0,0 +1,65 @@
+/*
+ * 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.
+ */
+
+#ifndef LIBODA_INPUT_H
+#define LIBODA_INPUT_H
+
+#include <sys/ascii.h>
+#include <stdint.h>
+#include <stddef.h>
+
+/*
+ * Macros to help extract scancode and
+ * character
+ */
+#define ODA_SCANCODE(KEY) ((KEY) >> 8)
+#define ODA_KEYCHAR(KEY) ((char )(KEY) & 0xFF)
+
+/*
+ * Represents a key press
+ *
+ * @scancode: Scancode
+ * @ch: Character
+ */
+struct oda_key {
+    uint8_t scancode;
+    char ch;
+};
+
+/*
+ * ODA keyboard object for managing keyboard
+ * input.
+ */
+struct oda_kbd {
+    int(*handle_keyev)(struct oda_kbd *kbd, struct oda_key *key);
+};
+
+int oda_kbd_dispatch(struct oda_kbd *kbd);
+
+#endif  /* !LIBODA_INPUT_H */