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comparison old/sdl_test/sdl_test.cc @ 996:78ebcdaae8bc

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add sdl_test file
author yutaka@charles.cr.ie.u-ryukyu.ac.jp
date Mon, 11 Oct 2010 18:56:51 +0900
parents
children ad5232ad4952
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995:143e4f9af7be 996:78ebcdaae8bc
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 close(fb.fd);
92
93 void *p;
94 Uint32 *gUra;
95
96 //posix_memalign((void**)&gUra, 16, fb.width*fb.height*4);
97
98 gUra = (Uint32*)malloc(fb.width*fb.height*4);
99 Uint32 *tmp = (Uint32*)malloc(fb.width*fb.height*4);
100
101 printf("fb.height %d \n", fb.height);
102
103 int i;
104 int color = 0x000000ff;
105
106 for (i = 0; i < fb.width*fb.height; i++) {
107 gUra[i] = color;
108 }
109
110
111 //初期化
112 if (SDL_Init( SDL_INIT_VIDEO | SDL_INIT_TIMER | SDL_INIT_JOYSTICK ) < 0) {
113 printf("SDL_Init failed\n");
114 return -1;
115 }
116
117 printf("fb.width %d fb.height %d fb.bpp %d \n",fb.width, fb.height, fb.bpp);
118
119 SDL_Surface *screen=SDL_SetVideoMode(fb.width,fb.height,fb.bpp,SDL_HWSURFACE);
120 if (screen == NULL) {
121 printf("SDL_Surface failed\n");
122 SDL_Quit();
123 return -1;
124 }
125
126 int done = 0;
127 SDL_Event event;
128
129 int fps=0;
130
131 Uint32 t1=SDL_GetTicks();
132
133 while(!done){
134 while(SDL_PollEvent(&event)){
135 switch(event.type){
136 case SDL_QUIT:
137 done = 1;
138 break;
139 case SDL_KEYDOWN:
140 if(event.key.keysym.sym == SDLK_ESCAPE){
141 done = 1;
142 }
143 break;
144 }
145 }
146
147
148 //ここに処理を追加して変化を見る
149 SDL_Surface *bitmap = SDL_CreateRGBSurfaceFrom((void *)gUra,fb.width,fb.height,fb.bpp,fb.width*4,redMask,greenMask,blueMask,alphaMask);
150 SDL_BlitSurface(bitmap,NULL,screen,NULL);
151 SDL_UpdateRect(screen,0,0,0,0);
152
153
154 if (SDL_GetTicks() < t1 + 1000){
155 fps++;
156 } else{
157 printf("fps=%d\n", fps);
158 fps=0;
159 t1=SDL_GetTicks();
160 }
161 }
162
163 SDL_Quit();
164
165 return 0;
166
167 }
168