nuttx/libc/misc/lib_kbdencode.c

/********************************************************************************************
 * 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
 ********************************************************************************************/

/********************************************************************************************
 * Public Functions
 ********************************************************************************************/

/****************************************************************************
 * Name: kbd_putspecial
 *
 * Description:
 *   Put one special, "out-of-band" 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_putspecial(enum kbd_keycode_e keycode,
                    FAR struct lib_outstream_s *stream)
{
  DEBUGASSERT(stream && keycode >= KEYCODE_FWDDEL && keycode <= LAST_KEYCODE);

  stream->put(stream, ASCII_ESC);
  stream->put(stream, '[');
  stream->put(stream, (int)keycode);
  stream->put(stream, ';');
}