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comparison old/sdl_test/fb_test.cc @ 998:ad5232ad4952

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add fb_test, minor fix
author yutaka@localhost.localdomain
date Fri, 15 Oct 2010 02:13:55 +0900
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997:625be5ca53ab 998:ad5232ad4952
1 #include "fb.h"
2 #include <SDL.h>
3 using namespace std;
4
5 void send_current_error_msg(const char *ptr)
6 {
7 fprintf( stderr , "%s\n" , ptr );
8 }
9
10 void send_current_information(const char *ptr)
11 {
12 fprintf( stdout , "%s\n" , ptr );
13 }
14
15 const int redMask = 0x00ff0000;
16 const int greenMask = 0x0000ff00;
17 const int blueMask = 0x000000ff;
18 const int alphaMask = 0xff000000;
19
20 fb_t
21 get_fbdev_addr(void)
22 {
23 int fd_framebuffer ;
24 struct fb_var_screeninfo vinfo;
25 struct fb_fix_screeninfo finfo;
26 long int screensize ;
27 //long int location;
28 char *fbptr ;
29 char tmp[DIV_BYTE*10];
30
31 //int x , y ;
32 int xres,yres,vbpp,line_len;
33 //unsigned short tcolor ;
34
35 /* 読み書き用にファイルを開く */
36 fd_framebuffer = open( DEVICE_NAME , O_RDWR);
37 if ( !fd_framebuffer ) {
38 send_current_error_msg("Framebuffer device open error !");
39 exit(1);
40 }
41 send_current_information("The framebuffer device was opened !");
42
43 /* 固定スクリーン情報取得 */
44 if ( ioctl( fd_framebuffer , FBIOGET_FSCREENINFO , &finfo ) ) {
45 send_current_error_msg("Fixed information not gotton !");
46 exit(2);
47 }
48
49 /* 変動スクリーン情報取得 */
50 if ( ioctl( fd_framebuffer , FBIOGET_VSCREENINFO , &vinfo ) ) {
51 send_current_error_msg("Variable information not gotton !");
52 exit(3);
53 }
54 xres = vinfo.xres ;
55 yres = vinfo.yres ;
56 printf("vinfo.yres %d \n", vinfo.yres);
57 vbpp = vinfo.bits_per_pixel ;
58 line_len = finfo.line_length ;
59 sprintf( tmp , "%d(pixel)x%d(line), %dbpp(bits per pixel)",xres,yres,vbpp);
60 sprintf( tmp , "%d(xoffset)x%d(yoffset)",vinfo.xoffset, vinfo.yoffset);
61 send_current_information( tmp );
62
63 /* バイト単位でのスクリーンのサイズを計算 */
64 screensize = xres * yres * vbpp / DIV_BYTE ;
65
66 /* デバイスをメモリにマップする */
67 fbptr = (char *)mmap(0,screensize,PROT_READ | PROT_WRITE,MAP_SHARED,fd_framebuffer,0);
68 if ( (int)fbptr == -1 ) {
69 send_current_error_msg("Don't get framebuffer device to memory !");
70 exit(4);
71 }
72 send_current_information("The framebuffer device was mapped !");
73
74 printf("fb: 0x%x \n", (unsigned int)fbptr);
75
76 fb_t fb;
77 fb.pixels = fbptr;
78 fb.size = screensize;
79 fb.width = xres;
80 fb.height = yres;
81 fb.bpp = vbpp;
82 fb.fd = fd_framebuffer;
83
84 return fb;
85
86 }
87
88 int main() {
89
90 fb_t fb = get_fbdev_addr();
91
92 void *p;
93 Uint32 *gUra;
94
95 gUra = (Uint32*)fb.pixels;
96 //gUra = (Uint32*)malloc(fb.width*fb.height*4);
97
98 printf("fb.height %d \n", fb.height);
99
100 int i;
101 int color = 0;
102
103 for (i = 0; i < fb.width*fb.height; i++) {
104 gUra[i] = color;
105 }
106
107
108 //初期化
109 if (SDL_Init( SDL_INIT_VIDEO | SDL_INIT_TIMER | SDL_INIT_JOYSTICK ) < 0) {
110 printf("SDL_Init failed\n");
111 return -1;
112 }
113
114 printf("fb.width %d fb.height %d fb.bpp %d \n",fb.width, fb.height, fb.bpp);
115
116 SDL_Surface *screen=SDL_SetVideoMode(fb.width,fb.height,fb.bpp,SDL_HWSURFACE);
117 if (screen == NULL) {
118 printf("SDL_Surface failed\n");
119 SDL_Quit();
120 return -1;
121 }
122
123 int done = 0;
124 SDL_Event event;
125
126 int fps=0;
127
128 Uint32 t1=SDL_GetTicks();
129
130 while(!done){
131 while(SDL_PollEvent(&event)){
132 switch(event.type){
133 case SDL_QUIT:
134 done = 1;
135 break;
136 case SDL_KEYDOWN:
137 if(event.key.keysym.sym == SDLK_ESCAPE){
138 done = 1;
139 }
140 break;
141 }
142 }
143
144 if (color == 0xffffffff) {
145 color = 0;
146 } else {
147
148 char r = ((color & redMask) >> 16) + 1;
149 char g = ((color & greenMask) >> 8) + 1;
150 char b = (color & blueMask) + 1;
151
152 color = alphaMask + (r << 16) + (g << 8) + b;
153
154 }
155
156 for (i = 0; i < fb.width*fb.height; i++) {
157 gUra[i] = color;
158 }
159
160
161 if (SDL_GetTicks() < t1 + 1000){
162 fps++;
163 } else{
164 printf("fps=%d\n", fps);
165 fps=0;
166 t1=SDL_GetTicks();
167 }
168 }
169
170 for (i = 0; i < fb.width*fb.height; i++) {
171 gUra[i] = 0;
172 }
173 munmap(fb.pixels, fb.size);
174 close(fb.fd);
175 SDL_Quit();
176
177
178 return 0;
179
180 }
181