annotate test/testbitmap.c @ 1013:a649064a3215

Date: Tue, 14 Dec 2004 12:08:30 +0100 From: Marcin Konicki Subject: Re: [SDL] SDL 1.2.8 Prerelease I'm sending small fix for BeOS, which prevents filling up SDL's message queue too fast. Without it, SDL receives "key down" messages from BeOS code, for each key repeat (BeOS handles key repeats itself, and application can check if received "key down" message from BeOS is first time key down, or if it's repeat, and which repeat it is). Since there is no way for "sdl driver" to turn off "default" SDL's key-repeat mechanism, they were working both at the same time (and queue could be filled up very fast). So this patch removes handling "key down" message from BeOS if it's key_repeat "type".
author Sam Lantinga <slouken@libsdl.org>
date Tue, 14 Dec 2004 18:23:27 +0000
parents 609543e2b3a1
children be9c9c8f6d53
rev   line source
0
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1
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2 /* Simple program: Test bitmap blits */
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3
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4 #include <stdio.h>
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5 #include <stdlib.h>
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6 #include <string.h>
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7
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8 #include "SDL.h"
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9 #include "picture.xbm"
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10
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11 SDL_Surface *LoadXBM(SDL_Surface *screen, int w, int h, Uint8 *bits)
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12 {
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13 SDL_Surface *bitmap;
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14 Uint8 *line;
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15
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16 /* Allocate the bitmap */
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17 bitmap = SDL_CreateRGBSurface(SDL_SWSURFACE, w, h, 1, 0, 0, 0, 0);
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18 if ( bitmap == NULL ) {
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19 fprintf(stderr, "Couldn't allocate bitmap: %s\n",
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20 SDL_GetError());
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21 return(NULL);
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22 }
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23
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24 /* Copy the pixels */
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25 line = (Uint8 *)bitmap->pixels;
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26 w = (w+7)/8;
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27 while ( h-- ) {
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28 memcpy(line, bits, w);
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29 /* X11 Bitmap images have the bits reversed */
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30 { int i, j; Uint8 *buf, byte;
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31 for ( buf=line, i=0; i<w; ++i, ++buf ) {
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32 byte = *buf;
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33 *buf = 0;
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34 for ( j=7; j>=0; --j ) {
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35 *buf |= (byte&0x01)<<j;
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36 byte >>= 1;
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37 }
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38 }
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39 }
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40 line += bitmap->pitch;
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41 bits += w;
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42 }
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43 return(bitmap);
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44 }
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45
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46 int main(int argc, char *argv[])
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47 {
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48 SDL_Surface *screen;
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49 SDL_Surface *bitmap;
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50 Uint8 video_bpp;
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51 Uint32 videoflags;
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52 Uint8 *buffer;
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53 int i, k, done;
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54 SDL_Event event;
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55 Uint16 *buffer16;
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56 Uint16 color;
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57 Uint8 gradient;
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58 SDL_Color palette[256];
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59
0
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60
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61 /* Initialize SDL */
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62 if ( SDL_Init(SDL_INIT_VIDEO) < 0 ) {
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63 fprintf(stderr, "Couldn't initialize SDL: %s\n",SDL_GetError());
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64 exit(1);
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65 }
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66 atexit(SDL_Quit);
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67
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68 video_bpp = 0;
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69 videoflags = SDL_SWSURFACE;
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70 while ( argc > 1 ) {
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71 --argc;
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72 if ( strcmp(argv[argc-1], "-bpp") == 0 ) {
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73 video_bpp = atoi(argv[argc]);
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74 --argc;
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75 } else
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76 if ( strcmp(argv[argc], "-warp") == 0 ) {
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77 videoflags |= SDL_HWPALETTE;
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78 } else
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79 if ( strcmp(argv[argc], "-hw") == 0 ) {
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80 videoflags |= SDL_HWSURFACE;
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81 } else
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82 if ( strcmp(argv[argc], "-fullscreen") == 0 ) {
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83 videoflags |= SDL_FULLSCREEN;
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84 } else {
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85 fprintf(stderr,
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86 "Usage: %s [-bpp N] [-warp] [-hw] [-fullscreen]\n",
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87 argv[0]);
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88 exit(1);
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89 }
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90 }
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91
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92 /* Set 640x480 video mode */
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93 if ( (screen=SDL_SetVideoMode(640,480,video_bpp,videoflags)) == NULL ) {
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94 fprintf(stderr, "Couldn't set 640x480x%d video mode: %s\n",
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95 video_bpp, SDL_GetError());
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96 exit(2);
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97 }
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98
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99 if (video_bpp==8) {
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100 /* Set a gray colormap, reverse order from white to black */
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101 for ( i=0; i<256; ++i ) {
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102 palette[i].r = 255-i;
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103 palette[i].g = 255-i;
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104 palette[i].b = 255-i;
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105 }
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106 SDL_SetColors(screen, palette, 0, 256);
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107 }
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108
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109 /* Set the surface pixels and refresh! */
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110 if ( SDL_LockSurface(screen) < 0 ) {
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111 fprintf(stderr, "Couldn't lock the display surface: %s\n",
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112 SDL_GetError());
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113 exit(2);
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114 }
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115 buffer=(Uint8 *)screen->pixels;
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116 if (screen->format->BytesPerPixel!=2) {
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117 for ( i=0; i<screen->h; ++i ) {
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118 memset(buffer,(i*255)/screen->h, screen->pitch);
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119 buffer += screen->pitch;
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120 }
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121 }
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122 else
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123 {
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124 for ( i=0; i<screen->h; ++i ) {
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125 gradient=((i*255)/screen->h);
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126 color = SDL_MapRGB(screen->format, gradient, gradient, gradient);
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127 buffer16=(Uint16*)buffer;
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128 for (k=0; k<screen->w; k++)
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129 {
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130 *(buffer16+k)=color;
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131 }
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132 buffer += screen->pitch;
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133 }
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134 }
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135 SDL_UnlockSurface(screen);
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136 SDL_UpdateRect(screen, 0, 0, 0, 0);
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137
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138 /* Load the bitmap */
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139 bitmap = LoadXBM(screen, picture_width, picture_height,
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140 (Uint8 *)picture_bits);
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141 if ( bitmap == NULL ) {
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142 exit(1);
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143 }
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144
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145 /* Wait for a keystroke */
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146 done = 0;
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147 while ( !done ) {
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148 /* Check for events */
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149 while ( SDL_PollEvent(&event) ) {
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150 switch (event.type) {
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151 case SDL_MOUSEBUTTONDOWN: {
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152 SDL_Rect dst;
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153
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154 dst.x = event.button.x - bitmap->w/2;
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155 dst.y = event.button.y - bitmap->h/2;
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156 dst.w = bitmap->w;
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157 dst.h = bitmap->h;
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158 SDL_BlitSurface(bitmap, NULL,
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159 screen, &dst);
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160 SDL_UpdateRects(screen,1,&dst);
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161 }
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162 break;
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163 case SDL_KEYDOWN:
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164 /* Any key press quits the app... */
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165 done = 1;
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166 break;
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167 case SDL_QUIT:
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168 done = 1;
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169 break;
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170 default:
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171 break;
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172 }
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173 }
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174 }
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175 SDL_FreeSurface(bitmap);
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176 return(0);
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177 }