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  1. /*
  2.  * Copyright (c) 2009 Jiri Svoboda
  3.  * All rights reserved.
  4.  *
  5.  * Redistribution and use in source and binary forms, with or without
  6.  * modification, are permitted provided that the following conditions
  7.  * are met:
  8.  *
  9.  * - Redistributions of source code must retain the above copyright
  10.  *   notice, this list of conditions and the following disclaimer.
  11.  * - Redistributions in binary form must reproduce the above copyright
  12.  *   notice, this list of conditions and the following disclaimer in the
  13.  *   documentation and/or other materials provided with the distribution.
  14.  * - The name of the author may not be used to endorse or promote products
  15.  *   derived from this software without specific prior written permission.
  16.  *
  17.  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  18.  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  19.  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  20.  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  21.  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  22.  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  23.  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  24.  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25.  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  26.  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27.  */
  28.  
  29. /** @addtogroup kbdgen generic
  30.  * @brief   Generic scancode parser.
  31.  * @ingroup  kbd
  32.  * @{
  33.  */
  34. /** @file
  35.  */
  36.  
  37. #ifndef KBD_GSP_H_
  38. #define KBD_GSP_H_
  39.  
  40. #include <libadt/hash_table.h>
  41.  
  42. enum {
  43.     GSP_END     = -1,
  44.     GSP_DEFAULT = -2
  45. };
  46.  
  47. typedef struct {
  48.     /** Transition table, (state, input) -> (state, output). */
  49.     hash_table_t trans;
  50.  
  51.     /** Current number of states. */
  52.     int states;
  53. } gsp_t;
  54.  
  55. typedef struct {
  56.     link_t link;
  57.  
  58.     int old_state;
  59.     int input;
  60.  
  61.     int new_state;
  62.  
  63.     unsigned out_mods;
  64.     unsigned out_key;
  65. } gsp_trans_t;
  66.  
  67. extern void gsp_init(gsp_t *);
  68. extern int gsp_insert_defs(gsp_t *, const int *);
  69. extern int gsp_insert_seq(gsp_t *, const int *, unsigned, unsigned);
  70. extern int gsp_step(gsp_t *, int, int, unsigned *, unsigned *);
  71.  
  72.  
  73. #endif
  74.  
  75. /**
  76.  * @}
  77.  */
  78.  
  79.