diff options
Diffstat (limited to 'libraries/evas/src/modules/engines/fb/evas_fb.h')
| -rw-r--r-- | libraries/evas/src/modules/engines/fb/evas_fb.h | 93 |
1 files changed, 93 insertions, 0 deletions
diff --git a/libraries/evas/src/modules/engines/fb/evas_fb.h b/libraries/evas/src/modules/engines/fb/evas_fb.h new file mode 100644 index 0000000..76ab30b --- /dev/null +++ b/libraries/evas/src/modules/engines/fb/evas_fb.h | |||
| @@ -0,0 +1,93 @@ | |||
| 1 | #ifndef _EVAS_FB_H | ||
| 2 | #define _EVAS_FB_H 1 | ||
| 3 | |||
| 4 | /* -------------------------------------------------------------------- */ | ||
| 5 | /* LINUX FBCON FRAMEBUFFER UTILITY CODE */ | ||
| 6 | /* makes setting up the framebuffer easy. Also makes it eays to port to */ | ||
| 7 | /* some other system if needed. */ | ||
| 8 | /* Copyright (c) 1999 - Carsten Haitzler (The Rasterman) */ | ||
| 9 | /* -------------------------------------------------------------------- */ | ||
| 10 | |||
| 11 | #include <stdio.h> | ||
| 12 | #include <stdlib.h> | ||
| 13 | #include <string.h> | ||
| 14 | #include <unistd.h> | ||
| 15 | #include <fcntl.h> | ||
| 16 | #include <termios.h> | ||
| 17 | #include <errno.h> | ||
| 18 | #include <sys/ioctl.h> | ||
| 19 | #include <sys/mman.h> | ||
| 20 | #include <sys/wait.h> | ||
| 21 | #include <sys/stat.h> | ||
| 22 | #include <linux/kd.h> | ||
| 23 | #include <linux/vt.h> | ||
| 24 | #include <linux/fb.h> | ||
| 25 | |||
| 26 | typedef struct _fb_mode FB_Mode; | ||
| 27 | |||
| 28 | struct _fb_mode | ||
| 29 | { | ||
| 30 | unsigned int width; | ||
| 31 | unsigned int height; | ||
| 32 | unsigned int refresh; | ||
| 33 | unsigned int depth; | ||
| 34 | unsigned int bpp; | ||
| 35 | int fb_fd; | ||
| 36 | void *mem; | ||
| 37 | unsigned int mem_offset; | ||
| 38 | struct fb_var_screeninfo fb_var; | ||
| 39 | }; | ||
| 40 | |||
| 41 | /* init a framebuffer (and switch to) vt number vt. If vt == 0 use current */ | ||
| 42 | /* vt */ | ||
| 43 | void fb_init(int vt, int device); | ||
| 44 | /* call this afetr setting or getting the fb mode (whichever) to complete */ | ||
| 45 | /* the dsetup */ | ||
| 46 | int fb_postinit(FB_Mode *mode); | ||
| 47 | /* console switching - if a switch was requested this with block if block */ | ||
| 48 | /* is 1, otherwise it will return 1 if current console is active or 0 if */ | ||
| 49 | /* the user has switched away in the meantime */ | ||
| 50 | int fb_await_switch(int block); | ||
| 51 | /* list all current possible video modes listed in /etc/fb.modes */ | ||
| 52 | /* returns pointer to an aray of FB_Mode, and sets num_return to the number */ | ||
| 53 | /* of elements in the returned array */ | ||
| 54 | FB_Mode *fb_list_modes(unsigned int *num_return); | ||
| 55 | /* sets the fb mode to the resolution width x height and the depth to depth. */ | ||
| 56 | /* and if refresh > 0 attempts to use a mode with a refresh rate (in Hz) of */ | ||
| 57 | /* that. If this fails it will return NULL - if it succeeds it will return */ | ||
| 58 | /* a pointer to the FB_Mode thatwas set. only modes in /etc/fb.modes will */ | ||
| 59 | /* be used. If refresh is 0 it uses the DEFAULT mode (the one with no */ | ||
| 60 | /* refresh rate at the end of its name (WIDTHxHEIGHT-REFRESH) */ | ||
| 61 | /* NB: in 8bpp you get a 332 palette. This is fixed so all modes are */ | ||
| 62 | /* "truecolor" - the only difference is how many bits bep red, green and */ | ||
| 63 | /* blue channel. This is for speed reasons */ | ||
| 64 | FB_Mode *fb_setmode(unsigned int width, unsigned int height, unsigned int depth, unsigned int refresh); | ||
| 65 | /* returns the current fb mode being used in FB_Mode */ | ||
| 66 | FB_Mode *fb_getmode(void); | ||
| 67 | /* changes the bit depth of the current fb mode to depth and returns a new */ | ||
| 68 | /* handle to a new fb mode with updated parameters. frees cur_mode for you. */ | ||
| 69 | FB_Mode *fb_changedepth(FB_Mode *cur_mode, unsigned int depth); | ||
| 70 | /* changes resolution - retaining current depth of the current mode, */ | ||
| 71 | /* returning a handle to the new mode once done. frees cur_mode for you. */ | ||
| 72 | FB_Mode *fb_changeres(FB_Mode *cur_mode, unsigned int width, unsigned int height, unsigned int refresh); | ||
| 73 | /* chnages both resolution and depth and returns a handle to the new mode */ | ||
| 74 | /* when done. frees cur_mode for you */ | ||
| 75 | FB_Mode *fb_changemode(FB_Mode *cur_mode, unsigned int width, unsigned int height, unsigned int depth, unsigned int refresh); | ||
| 76 | |||
| 77 | /* ------------------------------------------------------------------------- */ | ||
| 78 | /* How to init: */ | ||
| 79 | /* (Example) */ | ||
| 80 | |||
| 81 | /* FB_Mode *mode; */ | ||
| 82 | /* int fb_fd = -1; */ | ||
| 83 | /* fb_init(0); */ | ||
| 84 | /* mode = fb_setmode(640, 480, 8, 0); */ | ||
| 85 | /* if (mode) */ | ||
| 86 | /* fb_fd = fb_postinit(mode); */ | ||
| 87 | /* if (fb_fd == -1) */ | ||
| 88 | /* { */ | ||
| 89 | /* fprintf(stderr, "Frambuffer init failed\n"); */ | ||
| 90 | /* exit(1); */ | ||
| 91 | /* } */ | ||
| 92 | /* .... code to play with the FB */ | ||
| 93 | #endif | ||