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1 | /* |
1 | /* |
2 | * Copyright (C) 2006 Josef Cejka |
2 | * Copyright (C) 2006 Josef Cejka |
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 |
29 | /** @addtogroup kbdgen |
30 | * @brief HelenOS generic uspace keyboard handler. |
30 | * @brief HelenOS generic uspace keyboard handler. |
31 | * @ingroup kbd |
31 | * @ingroup kbd |
32 | * @{ |
32 | * @{ |
33 | */ |
33 | */ |
34 | /** @file |
34 | /** @file |
35 | */ |
35 | */ |
36 | 36 | ||
37 | #ifndef __KEY_BUFFER_H__ |
37 | #ifndef __KEY_BUFFER_H__ |
38 | #define __KEY_BUFFER_H__ |
38 | #define __KEY_BUFFER_H__ |
39 | 39 | ||
40 | #include <types.h> |
40 | #include <types.h> |
41 | 41 | ||
42 | /** Size of buffer for pressed keys */ |
42 | /** Size of buffer for pressed keys */ |
43 | #define KEYBUFFER_SIZE 128 |
43 | #define KEYBUFFER_SIZE 128 |
44 | 44 | ||
45 | typedef struct { |
45 | typedef struct { |
46 | int fifo[KEYBUFFER_SIZE]; |
46 | int fifo[KEYBUFFER_SIZE]; |
47 | unsigned long head; |
47 | unsigned long head; |
48 | unsigned long tail; |
48 | unsigned long tail; |
49 | unsigned long items; |
49 | unsigned long items; |
50 | } keybuffer_t; |
50 | } keybuffer_t; |
51 | 51 | ||
52 | void keybuffer_free(keybuffer_t *keybuffer); |
52 | void keybuffer_free(keybuffer_t *keybuffer); |
53 | void keybuffer_init(keybuffer_t *keybuffer); |
53 | void keybuffer_init(keybuffer_t *keybuffer); |
54 | int keybuffer_available(keybuffer_t *keybuffer); |
54 | int keybuffer_available(keybuffer_t *keybuffer); |
55 | int keybuffer_empty(keybuffer_t *keybuffer); |
55 | int keybuffer_empty(keybuffer_t *keybuffer); |
56 | void keybuffer_push(keybuffer_t *keybuffer, int key); |
56 | void keybuffer_push(keybuffer_t *keybuffer, int key); |
57 | int keybuffer_pop(keybuffer_t *keybuffer, int *c); |
57 | int keybuffer_pop(keybuffer_t *keybuffer, int *c); |
58 | 58 | ||
59 | #endif |
59 | #endif |
60 | 60 | ||
61 | /** |
61 | /** |
62 | * @} |
62 | * @} |
63 | */ |
63 | */ |
64 | 64 | ||
65 | 65 |