1 files changed, 151 insertions, 0 deletions
diff --git a/nuttx/libc/misc/lib_kbdencode.c b/nuttx/libc/misc/lib_kbdencode.c
new file mode 100644
index 000000000..80138ca80
--- /dev/null
+++ b/nuttx/libc/misc/lib_kbdencode.c
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+/****************************************************************************
+ * libc/msic/lib_kbdencode.c
+ * Encoding side of the Keyboard CODEC
+ *
+ *   Copyright (C) 2012 Gregory Nutt. All rights reserved.
+ *   Authors: Gregory Nutt <gnutt@nuttx.org>
+ *
+ * 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 NuttX 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.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <stdint.h>
+#include <assert.h>
+
+#include <nuttx/streams.h>
+#include <nuttx/ascii.h>
+#include <nuttx/input/kbd_codec.h>
+
+/****************************************************************************
+ * Pre-Processor Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: kbd_encode
+ *
+ * Description:
+ *   Encode one special special sequence command into the output stream.
+ *
+ * Input Parameters:
+ *   keycode - The command to be added to the output stream.
+ *   stream - An instance of lib_outstream_s to do the low-level put
+ *     operation.
+ *   terminator - Escape sequence terminating character.
+ *
+ * Returned Value:
+ *   None
+ *
+ ****************************************************************************/
+
+static void kbd_encode(uint8_t keycode, FAR struct lib_outstream_s *stream,
+                       uint8_t terminator)
+{
+  stream->put(stream, ASCII_ESC);
+  stream->put(stream, '[');
+  stream->put(stream, (int)keycode);
+  stream->put(stream, terminator);
+}
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: kbd_release
+ *
+ * Description:
+ *   Encode the release of a normal key.
+ *
+ * Input Parameters:
+ *   ch - The character associated with the key that was releared.
+ *   stream - An instance of lib_outstream_s to do the low-level put
+ *     operation.
+ *
+ * Returned Value:
+ *   None
+ *
+ ****************************************************************************/
+
+void kbd_release(uint8_t ch, FAR struct lib_outstream_s *stream)
+{
+  kbd_encode(ch, stream, ('a' + KBD_RELEASE)); 
+}
+
+/****************************************************************************
+ * Name: kbd_specpress
+ *
+ * Description:
+ *   Denotes a special key press event.  Put one special keyboard command
+ *   into the output stream.
+ *
+ * Input Parameters:
+ *   keycode - The command to be added to the output stream.
+ *   stream - An instance of lib_outstream_s to do the low-level put
+ *     operation.
+ *
+ * Returned Value:
+ *   None
+ *
+ ****************************************************************************/
+
+void kbd_specpress(enum kbd_keycode_e keycode,
+                   FAR struct lib_outstream_s *stream)
+{
+  DEBUGASSERT(stream && keycode >= KEYCODE_FWDDEL && keycode <= LAST_KEYCODE);
+  kbd_encode((uint8_t)keycode, stream, ('a' + KBD_SPECPRESS)); 
+}
+
+/****************************************************************************
+ * Name: kbd_specrel
+ *
+ * Description:
+ *   Denotes a special key release event.  Put one special keyboard
+ *   command into the output stream.
+ *
+ * Input Parameters:
+ *   keycode - The command to be added to the output stream.
+ *   stream - An instance of lib_outstream_s to do the low-level put
+ *     operation.
+ *
+ * Returned Value:
+ *   None
+ *
+ ****************************************************************************/
+
+void kbd_specrel(enum kbd_keycode_e keycode,
+                 FAR struct lib_outstream_s *stream)
+{
+  DEBUGASSERT(stream && keycode >= KEYCODE_FWDDEL && keycode <= LAST_KEYCODE);
+  kbd_encode((uint8_t)keycode, stream, ('a' + KBD_SPECREL)); 
+}