diff options
Diffstat (limited to 'libraries/ecore/src/lib/ecore_fb/ecore_fb.c')
-rw-r--r-- | libraries/ecore/src/lib/ecore_fb/ecore_fb.c | 114 |
1 files changed, 114 insertions, 0 deletions
diff --git a/libraries/ecore/src/lib/ecore_fb/ecore_fb.c b/libraries/ecore/src/lib/ecore_fb/ecore_fb.c new file mode 100644 index 0000000..ca7d73d --- /dev/null +++ b/libraries/ecore/src/lib/ecore_fb/ecore_fb.c | |||
@@ -0,0 +1,114 @@ | |||
1 | #ifdef HAVE_CONFIG_H | ||
2 | # include <config.h> | ||
3 | #endif | ||
4 | |||
5 | #include "Ecore_Fb.h" | ||
6 | #include "ecore_fb_private.h" | ||
7 | |||
8 | static void _ecore_fb_size_get(int *w, int *h); | ||
9 | |||
10 | static int _ecore_fb_init_count = 0; | ||
11 | static int _ecore_fb_console_w = 0; | ||
12 | static int _ecore_fb_console_h = 0; | ||
13 | |||
14 | /** | ||
15 | * @addtogroup Ecore_FB_Group Ecore_FB - Frame buffer convenience functions. | ||
16 | * | ||
17 | * @{ | ||
18 | */ | ||
19 | |||
20 | /** | ||
21 | * @brief Initialize the Ecore_Fb library. | ||
22 | * | ||
23 | * @param name Device target name. | ||
24 | * @return 1 or greater on success, 0 on error. | ||
25 | * | ||
26 | * This function sets up all the Ecore_Fb library. It returns 0 on | ||
27 | * failure, otherwise it returns the number of times it has already | ||
28 | * been called. | ||
29 | * | ||
30 | * When Ecore_Fb is not used anymore, call ecore_fb_shutdown() to shut down | ||
31 | * the Ecore_Fb library. | ||
32 | */ | ||
33 | EAPI int | ||
34 | ecore_fb_init(const char *name __UNUSED__) | ||
35 | { | ||
36 | if (++_ecore_fb_init_count != 1) | ||
37 | return _ecore_fb_init_count; | ||
38 | |||
39 | if (!ecore_fb_vt_init()) | ||
40 | return --_ecore_fb_init_count; | ||
41 | |||
42 | _ecore_fb_size_get(&_ecore_fb_console_w, &_ecore_fb_console_h); | ||
43 | |||
44 | return _ecore_fb_init_count; | ||
45 | } | ||
46 | |||
47 | /** | ||
48 | * @brief Shut down the Ecore_Fb library. | ||
49 | * | ||
50 | * @return 0 when the library is completely shut down, 1 or | ||
51 | * greater otherwise. | ||
52 | * | ||
53 | * This function shuts down the Ecore_Fb library. It returns 0 when it has | ||
54 | * been called the same number of times than ecore_fb_init(). | ||
55 | */ | ||
56 | EAPI int | ||
57 | ecore_fb_shutdown(void) | ||
58 | { | ||
59 | if (--_ecore_fb_init_count != 0) | ||
60 | return _ecore_fb_init_count; | ||
61 | |||
62 | ecore_fb_vt_shutdown(); | ||
63 | |||
64 | return _ecore_fb_init_count; | ||
65 | } | ||
66 | |||
67 | |||
68 | /** | ||
69 | * @brief Retrieve the width and height of the current frame buffer in | ||
70 | * pixels. | ||
71 | * | ||
72 | * @param w Pointer to an integer in which to store the width. | ||
73 | * @param h Pointer to an interge in which to store the height. | ||
74 | * | ||
75 | * This function retrieves the size of the current frame buffer in | ||
76 | * pixels. @p w and @p h can be buffers that will be filled with the | ||
77 | * corresponding values. If one of them is @c NULL, nothing will be | ||
78 | * done for that parameter. | ||
79 | */ | ||
80 | EAPI void | ||
81 | ecore_fb_size_get(int *w, int *h) | ||
82 | { | ||
83 | if (w) *w = _ecore_fb_console_w; | ||
84 | if (h) *h = _ecore_fb_console_h; | ||
85 | } | ||
86 | |||
87 | static void | ||
88 | _ecore_fb_size_get(int *w, int *h) | ||
89 | { | ||
90 | struct fb_var_screeninfo fb_var; | ||
91 | int fb; | ||
92 | |||
93 | fb = open("/dev/fb0", O_RDWR); | ||
94 | if (fb < 0) | ||
95 | { | ||
96 | if (w) *w = 0; | ||
97 | if (h) *h = 0; | ||
98 | return; | ||
99 | } | ||
100 | if (ioctl(fb, FBIOGET_VSCREENINFO, &fb_var) == -1) | ||
101 | { | ||
102 | if (w) *w = 0; | ||
103 | if (h) *h = 0; | ||
104 | close(fb); | ||
105 | return; | ||
106 | } | ||
107 | close(fb); | ||
108 | if (w) *w = fb_var.xres; | ||
109 | if (h) *h = fb_var.yres; | ||
110 | } | ||
111 | |||
112 | /** | ||
113 | * @} | ||
114 | */ | ||