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view old/sdl_test/sdl_test.cc @ 996:78ebcdaae8bc
add sdl_test file
author | yutaka@charles.cr.ie.u-ryukyu.ac.jp |
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date | Mon, 11 Oct 2010 18:56:51 +0900 |
parents | |
children | ad5232ad4952 |
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#include "fb.h" #include <SDL.h> using namespace std; void send_current_error_msg(const char *ptr) { fprintf( stderr , "%s\n" , ptr ); } void send_current_information(const char *ptr) { fprintf( stdout , "%s\n" , ptr ); } const int redMask = 0x00ff0000; const int greenMask = 0x0000ff00; const int blueMask = 0x000000ff; const int alphaMask = 0xff000000; fb_t get_fbdev_addr(void) { int fd_framebuffer ; struct fb_var_screeninfo vinfo; struct fb_fix_screeninfo finfo; long int screensize ; //long int location; char *fbptr ; char tmp[DIV_BYTE*10]; //int x , y ; int xres,yres,vbpp,line_len; //unsigned short tcolor ; /* 読み書き用にファイルを開く */ fd_framebuffer = open( DEVICE_NAME , O_RDWR); if ( !fd_framebuffer ) { send_current_error_msg("Framebuffer device open error !"); exit(1); } send_current_information("The framebuffer device was opened !"); /* 固定スクリーン情報取得 */ if ( ioctl( fd_framebuffer , FBIOGET_FSCREENINFO , &finfo ) ) { send_current_error_msg("Fixed information not gotton !"); exit(2); } /* 変動スクリーン情報取得 */ if ( ioctl( fd_framebuffer , FBIOGET_VSCREENINFO , &vinfo ) ) { send_current_error_msg("Variable information not gotton !"); exit(3); } xres = vinfo.xres ; yres = vinfo.yres ; printf("vinfo.yres %d \n", vinfo.yres); vbpp = vinfo.bits_per_pixel ; line_len = finfo.line_length ; sprintf( tmp , "%d(pixel)x%d(line), %dbpp(bits per pixel)",xres,yres,vbpp); sprintf( tmp , "%d(xoffset)x%d(yoffset)",vinfo.xoffset, vinfo.yoffset); send_current_information( tmp ); /* バイト単位でのスクリーンのサイズを計算 */ screensize = xres * yres * vbpp / DIV_BYTE ; /* デバイスをメモリにマップする */ fbptr = (char *)mmap(0,screensize,PROT_READ | PROT_WRITE,MAP_SHARED,fd_framebuffer,0); if ( (int)fbptr == -1 ) { send_current_error_msg("Don't get framebuffer device to memory !"); exit(4); } send_current_information("The framebuffer device was mapped !"); printf("fb: 0x%x \n", (unsigned int)fbptr); fb_t fb; fb.pixels = fbptr; fb.size = screensize; fb.width = xres; fb.height = yres; fb.bpp = vbpp; fb.fd = fd_framebuffer; return fb; } int main() { fb_t fb = get_fbdev_addr(); close(fb.fd); void *p; Uint32 *gUra; //posix_memalign((void**)&gUra, 16, fb.width*fb.height*4); gUra = (Uint32*)malloc(fb.width*fb.height*4); Uint32 *tmp = (Uint32*)malloc(fb.width*fb.height*4); printf("fb.height %d \n", fb.height); int i; int color = 0x000000ff; for (i = 0; i < fb.width*fb.height; i++) { gUra[i] = color; } //初期化 if (SDL_Init( SDL_INIT_VIDEO | SDL_INIT_TIMER | SDL_INIT_JOYSTICK ) < 0) { printf("SDL_Init failed\n"); return -1; } printf("fb.width %d fb.height %d fb.bpp %d \n",fb.width, fb.height, fb.bpp); SDL_Surface *screen=SDL_SetVideoMode(fb.width,fb.height,fb.bpp,SDL_HWSURFACE); if (screen == NULL) { printf("SDL_Surface failed\n"); SDL_Quit(); return -1; } int done = 0; SDL_Event event; int fps=0; Uint32 t1=SDL_GetTicks(); while(!done){ while(SDL_PollEvent(&event)){ switch(event.type){ case SDL_QUIT: done = 1; break; case SDL_KEYDOWN: if(event.key.keysym.sym == SDLK_ESCAPE){ done = 1; } break; } } //ここに処理を追加して変化を見る SDL_Surface *bitmap = SDL_CreateRGBSurfaceFrom((void *)gUra,fb.width,fb.height,fb.bpp,fb.width*4,redMask,greenMask,blueMask,alphaMask); SDL_BlitSurface(bitmap,NULL,screen,NULL); SDL_UpdateRect(screen,0,0,0,0); if (SDL_GetTicks() < t1 + 1000){ fps++; } else{ printf("fps=%d\n", fps); fps=0; t1=SDL_GetTicks(); } } SDL_Quit(); return 0; }