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annotate Renderer/Engine/viewerFB.cc @ 983:ff74988bbb2a

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minor fix
author root@henri.cr.ie.u-ryukyu.ac.jp
date Fri, 01 Oct 2010 00:37:06 +0900
parents a193a851b5e3
children df5185513c2d
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1 #include "viewerFB.h"
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2 #include "fb.h"
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3 #include <stdio.h>
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4
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5 #define default_sdl_flag SDL_INIT_TIMER | SDL_INIT_JOYSTICK
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6
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7 ViewerFB::ViewerFB() {}
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8 ViewerFB::~ViewerFB() {}
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9
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10 #if defined(__linux__)
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11
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12 #define DEVICE_NAME "/dev/fb0"
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13 #define DIV_BYTE 8
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14
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15
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16 ScreenInfo get_fbdev_addr(void)
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17 {
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18 ScreenInfo info;
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19 int fd_framebuffer ;
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20 struct fb_var_screeninfo vinfo;
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21 struct fb_fix_screeninfo finfo;
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22 long int screensize ;
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23 //long int location;
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24 char *fbptr ;
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25 char tmp[DIV_BYTE*10];
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26
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27 //int x , y ;
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28 int xres,yres,vbpp,line_len;
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29 //unsigned short tcolor ;
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30
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31 /* 読み書き用にファイルを開く */
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32 fd_framebuffer = open( DEVICE_NAME , O_RDWR);
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33 if ( !fd_framebuffer ) {
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34 send_current_error_msg("Framebuffer device open error !");
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35 exit(1);
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36 }
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37 send_current_information("The framebuffer device was opened !");
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38
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39 /* 固定スクリーン情報取得 */
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40 if ( ioctl( fd_framebuffer , FBIOGET_FSCREENINFO , &finfo ) ) {
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41 send_current_error_msg("Fixed information not gotton !");
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42 exit(2);
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43 }
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44
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45 /* 変動スクリーン情報取得 */
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46 if ( ioctl( fd_framebuffer , FBIOGET_VSCREENINFO , &vinfo ) ) {
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47 send_current_error_msg("Variable information not gotton !");
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48 exit(3);
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49 }
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50 xres = vinfo.xres ;
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51 yres = vinfo.yres ;
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52 vbpp = vinfo.bits_per_pixel ;
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53 line_len = finfo.line_length ;
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54 sprintf( tmp , "%d(pixel)x%d(line), %dbpp(bits per pixel)",xres,yres,vbpp);
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55 send_current_information( tmp );
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56
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57 /* バイト単位でのスクリーンのサイズを計算 */
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58 screensize = xres * yres * vbpp / DIV_BYTE ;
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59
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60 /* デバイスをメモリにマップする */
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61 fbptr = (char *)mmap(0,screensize,PROT_READ | PROT_WRITE,MAP_SHARED,fd_framebuffer,0);
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62 if ( (int)fbptr == -1 ) {
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63 send_current_error_msg("Don't get framebuffer device to memory !");
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64 exit(4);
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65 }
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66 send_current_information("The framebuffer device was mapped !");
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67
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68 printf("fb: 0x%x \n", (unsigned int)fbptr);
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69 info.xres = xres;
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70 info.yres = yres;
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71 info.vbpp = vbpp;
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72 info.line_len = line_len;
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73 info.fbptr[0] = (uint32_t *)fbptr;
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74
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75 return info;
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76 //munmap(fbptr,screensize);
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77 //close(fd_framebuffer);
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78 //return 0;
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79 }
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80
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81 void send_current_error_msg(const char *ptr)
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82 {
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83 fprintf( stderr , "%s\n" , ptr );
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84 }
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85
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86 void send_current_information(const char *ptr)
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87 {
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88 fprintf( stdout , "%s\n" , ptr );
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89 }
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90
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91 #else /* !defined(__linux__) */
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92 ScreenInfo get_fbdev_addr(void) {
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93 ScreenInfo tmp = {0,0,0,0};
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94 return tmp;
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95 }
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96 #endif /* defined(__linux__) */
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97
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98
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99 Uint32 *
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100 ViewerFB::video_init(TaskManager *manager, int bpp, int width, int height)
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101 {
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102 Uint32 sdl_flag = default_sdl_flag | SDL_INIT_VIDEO;
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103
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104 if (SDL_Init(sdl_flag) < 0) {
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105 fprintf(stderr,"Couldn't initialize SDL: %s\n",SDL_GetError());
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106 exit(1);
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107 }
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108
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109 screen_info = get_fbdev_addr();
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110 Uint32 *pixels = screen_info.fbptr[0];
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111
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112 if (pixels == 0) {
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113 fprintf(stderr, "Cannot get frame buffer!\n");
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114 pixels = (new Uint32[width*height*32/8]);
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115 }
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116 this->width = screen_info.xres;
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117 this->height = screen_info.yres;
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118 this->bpp = screen_info.vbpp;
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119
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120 return pixels;
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121 }
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122
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123 void
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124 ViewerFB::clean_pixels()
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125 {
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126 }
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127
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128 void
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129 ViewerFB::clear_screen()
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130 {
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131 }
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132
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133
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134 void
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135 ViewerFB::free_device()
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136 {
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137 }
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139