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1
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2 /* Bring up a window and play with it */
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3
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4 #include <stdlib.h>
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5 #include <stdio.h>
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6 #include <string.h>
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7
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8 #define BENCHMARK_SDL
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9
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10 #define NOTICE(X) printf("%s", X);
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11
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12 #include "SDL.h"
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13
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14 void DrawPict(SDL_Surface *screen, char *bmpfile,
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15 int speedy, int flip, int nofade)
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16 {
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17 SDL_Surface *picture;
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18 SDL_Rect dest, update;
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19 int i, centered;
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20 int ncolors;
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21 SDL_Color *colors, *cmap;
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22
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23 /* Load the image into a surface */
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24 if ( bmpfile == NULL ) {
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25 bmpfile = "sample.bmp"; /* Sample image */
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26 }
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27 fprintf(stderr, "Loading picture: %s\n", bmpfile);
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28 picture = SDL_LoadBMP(bmpfile);
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29 if ( picture == NULL ) {
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30 fprintf(stderr, "Couldn't load %s: %s\n", bmpfile,
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31 SDL_GetError());
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32 return;
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33 }
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34
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35 /* Set the display colors -- on a hicolor display this is a no-op */
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36 if ( picture->format->palette ) {
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37 ncolors = picture->format->palette->ncolors;
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38 colors = (SDL_Color *)malloc(ncolors*sizeof(SDL_Color));
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39 cmap = (SDL_Color *)malloc(ncolors*sizeof(SDL_Color));
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40 memcpy(colors, picture->format->palette->colors,
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41 ncolors*sizeof(SDL_Color));
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42 } else {
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43 int r, g, b;
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44
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45 /* Allocate 256 color palette */
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46 ncolors = 256;
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47 colors = (SDL_Color *)malloc(ncolors*sizeof(SDL_Color));
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48 cmap = (SDL_Color *)malloc(ncolors*sizeof(SDL_Color));
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49
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50 /* Set a 3,3,2 color cube */
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51 for ( r=0; r<8; ++r ) {
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52 for ( g=0; g<8; ++g ) {
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53 for ( b=0; b<4; ++b ) {
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54 i = ((r<<5)|(g<<2)|b);
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55 colors[i].r = r<<5;
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56 colors[i].g = g<<5;
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57 colors[i].b = b<<6;
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58 }
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59 }
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60 }
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61 }
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62 NOTICE("testwin: setting colors\n");
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63 if ( ! SDL_SetColors(screen, colors, 0, ncolors) &&
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64 (screen->format->palette != NULL) ) {
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65 fprintf(stderr,
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66 "Warning: Couldn't set all of the colors, but SDL will map the image\n"
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67 " (colormap fading will suffer - try the -warp option)\n"
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68 );
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69 }
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70
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71 /* Set the screen to black (not really necessary) */
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72 if ( SDL_LockSurface(screen) == 0 ) {
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73 Uint32 black;
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74 Uint8 *pixels;
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75
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76 black = SDL_MapRGB(screen->format, 0, 0, 0);
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77 pixels = (Uint8 *)screen->pixels;
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78 for ( i=0; i<screen->h; ++i ) {
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79 memset(pixels, black,
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80 screen->w*screen->format->BytesPerPixel);
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81 pixels += screen->pitch;
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82 }
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83 SDL_UnlockSurface(screen);
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84 SDL_UpdateRect(screen, 0, 0, 0, 0);
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85 }
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86
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87 /* Display the picture */
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88 if ( speedy ) {
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89 SDL_Surface *displayfmt;
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90
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91 fprintf(stderr, "Converting picture\n");
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92 displayfmt = SDL_DisplayFormat(picture);
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93 if ( displayfmt == NULL ) {
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94 fprintf(stderr,
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95 "Couldn't convert image: %s\n", SDL_GetError());
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96 goto done;
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97 }
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98 SDL_FreeSurface(picture);
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99 picture = displayfmt;
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100 }
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101 printf("(image surface located in %s memory)\n",
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102 (picture->flags&SDL_HWSURFACE) ? "video" : "system");
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103 centered = (screen->w - picture->w)/2;
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104 if ( centered < 0 ) {
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105 centered = 0;
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106 }
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107 dest.y = (screen->h - picture->h)/2;
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108 dest.w = picture->w;
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109 dest.h = picture->h;
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110 NOTICE("testwin: moving image\n");
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111 for ( i=0; i<=centered; ++i ) {
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112 dest.x = i;
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113 update = dest;
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114 if ( SDL_BlitSurface(picture, NULL, screen, &update) < 0 ) {
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115 fprintf(stderr, "Blit failed: %s\n", SDL_GetError());
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116 break;
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117 }
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118 if ( flip ) {
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119 SDL_Flip(screen);
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120 } else {
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121 SDL_UpdateRects(screen, 1, &update);
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122 }
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123 }
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124
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125 #ifdef SCREENSHOT
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126 if ( SDL_SaveBMP(screen, "screen.bmp") < 0 )
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127 printf("Couldn't save screen: %s\n", SDL_GetError());
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128 #endif
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129
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130 #ifndef BENCHMARK_SDL
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131 /* Let it sit there for a while */
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132 SDL_Delay(5*1000);
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133 #endif
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134 /* Fade the colormap */
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135 if ( ! nofade ) {
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136 int maxstep;
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137 SDL_Color final;
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138 SDL_Color palcolors[256];
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139 struct {
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140 Sint16 r, g, b;
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141 } cdist[256];
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142
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143 NOTICE("testwin: fading out...\n");
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144 memcpy(cmap, colors, ncolors*sizeof(SDL_Color));
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145 maxstep = 32-1;
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146 final.r = 0xFF;
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147 final.g = 0x00;
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148 final.b = 0x00;
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149 memcpy(palcolors, colors, ncolors*sizeof(SDL_Color));
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150 for ( i=0; i<ncolors; ++i ) {
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151 cdist[i].r = final.r-palcolors[i].r;
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152 cdist[i].g = final.g-palcolors[i].g;
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153 cdist[i].b = final.b-palcolors[i].b;
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154 }
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155 for ( i=0; i<=maxstep/2; ++i ) { /* halfway fade */
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156 int c;
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157 for ( c=0; c<ncolors; ++c ) {
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158 colors[c].r =
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159 palcolors[c].r+((cdist[c].r*i))/maxstep;
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160 colors[c].g =
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161 palcolors[c].g+((cdist[c].g*i))/maxstep;
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162 colors[c].b =
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163 palcolors[c].b+((cdist[c].b*i))/maxstep;
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164 }
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165 SDL_SetColors(screen, colors, 0, ncolors);
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166 SDL_Delay(1);
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167 }
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168 final.r = 0x00;
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169 final.g = 0x00;
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170 final.b = 0x00;
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171 memcpy(palcolors, colors, ncolors*sizeof(SDL_Color));
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172 for ( i=0; i<ncolors; ++i ) {
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173 cdist[i].r = final.r-palcolors[i].r;
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174 cdist[i].g = final.g-palcolors[i].g;
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175 cdist[i].b = final.b-palcolors[i].b;
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176 }
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177 maxstep /= 2;
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178 for ( i=0; i<=maxstep; ++i ) { /* finish fade out */
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179 int c;
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180 for ( c=0; c<ncolors; ++c ) {
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181 colors[c].r =
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182 palcolors[c].r+((cdist[c].r*i))/maxstep;
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183 colors[c].g =
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184 palcolors[c].g+((cdist[c].g*i))/maxstep;
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185 colors[c].b =
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186 palcolors[c].b+((cdist[c].b*i))/maxstep;
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187 }
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188 SDL_SetColors(screen, colors, 0, ncolors);
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189 SDL_Delay(1);
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190 }
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191 for ( i=0; i<ncolors; ++i ) {
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192 colors[i].r = final.r;
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193 colors[i].g = final.g;
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194 colors[i].b = final.b;
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195 }
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196 SDL_SetColors(screen, colors, 0, ncolors);
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197 NOTICE("testwin: fading in...\n");
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198 memcpy(palcolors, colors, ncolors*sizeof(SDL_Color));
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199 for ( i=0; i<ncolors; ++i ) {
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200 cdist[i].r = cmap[i].r-palcolors[i].r;
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201 cdist[i].g = cmap[i].g-palcolors[i].g;
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202 cdist[i].b = cmap[i].b-palcolors[i].b;
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203 }
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204 for ( i=0; i<=maxstep; ++i ) { /* 32 step fade in */
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205 int c;
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206 for ( c=0; c<ncolors; ++c ) {
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207 colors[c].r =
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208 palcolors[c].r+((cdist[c].r*i))/maxstep;
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209 colors[c].g =
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210 palcolors[c].g+((cdist[c].g*i))/maxstep;
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211 colors[c].b =
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212 palcolors[c].b+((cdist[c].b*i))/maxstep;
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213 }
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214 SDL_SetColors(screen, colors, 0, ncolors);
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215 SDL_Delay(1);
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216 }
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217 NOTICE("testwin: fading over\n");
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218 }
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219
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220 done:
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221 /* Free the picture and return */
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222 SDL_FreeSurface(picture);
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223 free(colors); free(cmap);
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224 return;
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225 }
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226
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227 int main(int argc, char *argv[])
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228 {
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229 SDL_Surface *screen;
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230 /* Options */
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231 int speedy, flip, nofade;
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232 int delay;
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233 int w, h;
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234 int desired_bpp;
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235 Uint32 video_flags;
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236 #ifdef BENCHMARK_SDL
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237 Uint32 then, now;
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238 #endif
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239 /* Set default options and check command-line */
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240 speedy = 0;
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241 flip = 0;
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242 nofade = 0;
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243 delay = 1;
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244 w = 640;
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245 h = 480;
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246 desired_bpp = 0;
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247 video_flags = 0;
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248 while ( argc > 1 ) {
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249 if ( strcmp(argv[1], "-speedy") == 0 ) {
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250 speedy = 1;
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251 argv += 1;
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252 argc -= 1;
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253 } else
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254 if ( strcmp(argv[1], "-nofade") == 0 ) {
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255 nofade = 1;
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256 argv += 1;
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257 argc -= 1;
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258 } else
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259 if ( strcmp(argv[1], "-delay") == 0 ) {
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260 if ( argv[2] ) {
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261 delay = atoi(argv[2]);
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262 argv += 2;
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263 argc -= 2;
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264 } else {
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265 fprintf(stderr,
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266 "The -delay option requires an argument\n");
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267 exit(1);
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268 }
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269 } else
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270 if ( strcmp(argv[1], "-width") == 0 ) {
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271 if ( argv[2] && ((w = atoi(argv[2])) > 0) ) {
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272 argv += 2;
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273 argc -= 2;
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274 } else {
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275 fprintf(stderr,
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276 "The -width option requires an argument\n");
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277 exit(1);
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278 }
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279 } else
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280 if ( strcmp(argv[1], "-height") == 0 ) {
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281 if ( argv[2] && ((h = atoi(argv[2])) > 0) ) {
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282 argv += 2;
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283 argc -= 2;
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284 } else {
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285 fprintf(stderr,
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286 "The -height option requires an argument\n");
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287 exit(1);
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288 }
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289 } else
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290 if ( strcmp(argv[1], "-bpp") == 0 ) {
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291 if ( argv[2] ) {
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292 desired_bpp = atoi(argv[2]);
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293 argv += 2;
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294 argc -= 2;
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295 } else {
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296 fprintf(stderr,
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297 "The -bpp option requires an argument\n");
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298 exit(1);
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299 }
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300 } else
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301 if ( strcmp(argv[1], "-warp") == 0 ) {
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302 video_flags |= SDL_HWPALETTE;
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303 argv += 1;
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304 argc -= 1;
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305 } else
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306 if ( strcmp(argv[1], "-hw") == 0 ) {
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307 video_flags |= SDL_HWSURFACE;
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308 argv += 1;
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309 argc -= 1;
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310 } else
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311 if ( strcmp(argv[1], "-flip") == 0 ) {
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312 video_flags |= SDL_DOUBLEBUF;
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313 argv += 1;
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314 argc -= 1;
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315 } else
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316 if ( strcmp(argv[1], "-fullscreen") == 0 ) {
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317 video_flags |= SDL_FULLSCREEN;
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318 argv += 1;
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319 argc -= 1;
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320 } else
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321 break;
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322 }
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323
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324 if ( SDL_Init(SDL_INIT_VIDEO) < 0 ) {
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325 fprintf(stderr,
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326 "Couldn't initialize SDL: %s\n", SDL_GetError());
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327 exit(1);
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328 }
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329 atexit(SDL_Quit); /* Clean up on exit */
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330
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331 /* Initialize the display */
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332 screen = SDL_SetVideoMode(w, h, desired_bpp, video_flags);
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333 if ( screen == NULL ) {
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334 fprintf(stderr, "Couldn't set %dx%dx%d video mode: %s\n",
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335 w, h, desired_bpp, SDL_GetError());
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336 exit(1);
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337 }
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338 printf("Set %dx%dx%d mode\n",
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339 screen->w, screen->h, screen->format->BitsPerPixel);
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340 printf("(video surface located in %s memory)\n",
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341 (screen->flags&SDL_HWSURFACE) ? "video" : "system");
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342 if ( screen->flags & SDL_DOUBLEBUF ) {
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343 printf("Double-buffering enabled\n");
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344 flip = 1;
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345 }
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346
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347 /* Set the window manager title bar */
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348 SDL_WM_SetCaption("SDL test window", "testwin");
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349
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350 /* Do all the drawing work */
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351 #ifdef BENCHMARK_SDL
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352 then = SDL_GetTicks();
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353 DrawPict(screen, argv[1], speedy, flip, nofade);
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354 now = SDL_GetTicks();
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355 printf("Time: %d milliseconds\n", now-then);
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356 #else
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357 DrawPict(screen, argv[1], speedy, flip, nofade);
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358 #endif
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359 SDL_Delay(delay*1000);
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360 return(0);
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361 }
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