WebSVN – HelenOS – Diff – /branches/dynload/uspace/srv/kbd/include/gsp.h


/*
 * Copyright (c) 2009 Jiri Svoboda
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * - Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * - 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.
 * - The name of the author may not be used to endorse or promote products
 *   derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
 */
 
/** @addtogroup kbdgen generic
 * @brief   Generic scancode parser.
 * @ingroup  kbd
 * @{
 */
/** @file
 */
 
#ifndef KBD_GSP_H_
#define KBD_GSP_H_
 
#include <libadt/hash_table.h>
 
enum {
    GSP_END     = -1,   /**< Terminates a sequence. */
    GSP_DEFAULT = -2    /**< Wildcard, catches unhandled cases. */
};
 
/** Scancode parser description */
typedef struct {
    /** Transition table, (state, input) -> (state, output) */
    hash_table_t trans;
 
    /** Number of states */
    int states;
} gsp_t;
 
/** Scancode parser transition. */
typedef struct {
    link_t link;        /**< Link to hash table in @c gsp_t */
 
    /* Preconditions */
 
    int old_state;      /**< State before transition */
    int input;      /**< Input symbol (scancode) */
 
    /* Effects */
 
    int new_state;      /**< State after transition */
 
    /* Output emitted during transition */
 
    unsigned out_mods;  /**< Modifier to emit */
    unsigned out_key;   /**< Keycode to emit */
} gsp_trans_t;
 
extern void gsp_init(gsp_t *);
extern int gsp_insert_defs(gsp_t *, const int *);
extern int gsp_insert_seq(gsp_t *, const int *, unsigned, unsigned);
extern int gsp_step(gsp_t *, int, int, unsigned *, unsigned *);
 
#endif
 
/**
 * @}
 */
 

Subversion Repositories HelenOS

(root)/branches/dynload/uspace/srv/kbd/include/gsp.h – Rev 4113 → 4346

Rev 4113		Rev 4346
1	/*	1	/*
2	* Copyright (c) 2009 Jiri Svoboda	2	* Copyright (c) 2009 Jiri Svoboda
3	* All rights reserved.	3	* All rights reserved.
4	*	4	*
5	* Redistribution and use in source and binary forms, with or without	5	* Redistribution and use in source and binary forms, with or without
6	* modification, are permitted provided that the following conditions	6	* modification, are permitted provided that the following conditions
7	* are met:	7	* are met:
8	*	8	*
9	* - Redistributions of source code must retain the above copyright	9	* - Redistributions of source code must retain the above copyright
10	* notice, this list of conditions and the following disclaimer.	10	* notice, this list of conditions and the following disclaimer.
11	* - Redistributions in binary form must reproduce the above copyright	11	* - Redistributions in binary form must reproduce the above copyright
12	* notice, this list of conditions and the following disclaimer in the	12	* notice, this list of conditions and the following disclaimer in the
13	* documentation and/or other materials provided with the distribution.	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	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.	15	* derived from this software without specific prior written permission.
16	*	16	*
17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR	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	18	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.	19	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,	20	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT	21	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,	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	23	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	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	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.	26	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27	*/	27	*/
28		28
29	/** @addtogroup kbdgen generic	29	/** @addtogroup kbdgen generic
30	* @brief Generic scancode parser.	30	* @brief Generic scancode parser.
31	* @ingroup kbd	31	* @ingroup kbd
32	* @{	32	* @{
33	*/	33	*/
34	/** @file	34	/** @file
35	*/	35	*/
36		36
37	#ifndef KBD_GSP_H_	37	#ifndef KBD_GSP_H_
38	#define KBD_GSP_H_	38	#define KBD_GSP_H_
39		39
40	#include <libadt/hash_table.h>	40	#include <libadt/hash_table.h>
41		41
42	enum {	42	enum {
43	GSP_END = -1, /*< Terminates a sequence. /	43	GSP_END = -1, /*< Terminates a sequence. /
44	GSP_DEFAULT = -2 /*< Wildcard, catches unhandled cases. /	44	GSP_DEFAULT = -2 /*< Wildcard, catches unhandled cases. /
45	};	45	};
46		46
47	/** Scancode parser description */	47	/** Scancode parser description */
48	typedef struct {	48	typedef struct {
49	/** Transition table, (state, input) -> (state, output) */	49	/** Transition table, (state, input) -> (state, output) */
50	hash_table_t trans;	50	hash_table_t trans;
51		51
52	/** Number of states */	52	/** Number of states */
53	int states;	53	int states;
54	} gsp_t;	54	} gsp_t;
55		55
56	/** Scancode parser transition. */	56	/** Scancode parser transition. */
57	typedef struct {	57	typedef struct {
58	link_t link; /*< Link to hash table in @c gsp_t /	58	link_t link; /*< Link to hash table in @c gsp_t /
59		59
60	/* Preconditions */	60	/* Preconditions */
61		61
62	int old_state; /*< State before transition /	62	int old_state; /*< State before transition /
63	int input; /*< Input symbol (scancode) /	63	int input; /*< Input symbol (scancode) /
64		64
65	/* Effects */	65	/* Effects */
66		66
67	int new_state; /*< State after transition /	67	int new_state; /*< State after transition /
68		68
69	/* Output emitted during transition */	69	/* Output emitted during transition */
70		70
71	unsigned out_mods; /*< Modifier to emit /	71	unsigned out_mods; /*< Modifier to emit /
72	unsigned out_key; /*< Keycode to emit /	72	unsigned out_key; /*< Keycode to emit /
73	} gsp_trans_t;	73	} gsp_trans_t;
74		74
75	extern void gsp_init(gsp_t *);	75	extern void gsp_init(gsp_t *);
76	extern int gsp_insert_defs(gsp_t , const int );	76	extern int gsp_insert_defs(gsp_t , const int );
77	extern int gsp_insert_seq(gsp_t , const int , unsigned, unsigned);	77	extern int gsp_insert_seq(gsp_t , const int , unsigned, unsigned);
78	extern int gsp_step(gsp_t , int, int, unsigned , unsigned *);	78	extern int gsp_step(gsp_t , int, int, unsigned , unsigned *);
79		79
80	#endif	80	#endif
81		81
82	/**	82	/**
83	* @}	83	* @}
84	*/	84	*/
85		85