352 lines
11 KiB
C
352 lines
11 KiB
C
|
/*
|
||
|
|
Copyright (C) 1997-2011 Sam Lantinga <slouken@libsdl.org>
|
||
|
|
|
||
|
|
This software is provided 'as-is', without any express or implied
|
||
|
|
warranty. In no event will the authors be held liable for any damages
|
||
|
|
arising from the use of this software.
|
||
|
|
|
||
|
|
Permission is granted to anyone to use this software for any purpose,
|
||
|
|
including commercial applications, and to alter it and redistribute it
|
||
|
|
freely.
|
||
|
|
*/
|
||
|
|
|
||
|
|
/* Bring up a window and play with it */
|
||
|
|
|
||
|
|
#include <stdlib.h>
|
||
|
|
#include <stdio.h>
|
||
|
|
#include <string.h>
|
||
|
|
|
||
|
|
#define BENCHMARK_SDL
|
||
|
|
|
||
|
|
#define NOTICE(X) printf("%s", X);
|
||
|
|
|
||
|
|
#include "SDL.h"
|
||
|
|
|
||
|
|
/* Call this instead of exit(), so we can clean up SDL: atexit() is evil. */
|
||
|
|
static void
|
||
|
|
quit(int rc)
|
||
|
|
{
|
||
|
|
SDL_Quit();
|
||
|
|
exit(rc);
|
||
|
|
}
|
||
|
|
|
||
|
|
void
|
||
|
|
DrawPict(SDL_Surface * screen, char *bmpfile,
|
||
|
|
int speedy, int flip, int nofade)
|
||
|
|
{
|
||
|
|
SDL_Surface *picture;
|
||
|
|
SDL_Rect dest, update;
|
||
|
|
int i, centered;
|
||
|
|
int ncolors;
|
||
|
|
SDL_Color *colors, *cmap;
|
||
|
|
|
||
|
|
/* Load the image into a surface */
|
||
|
|
if (bmpfile == NULL) {
|
||
|
|
bmpfile = "sample.bmp"; /* Sample image */
|
||
|
|
}
|
||
|
|
fprintf(stderr, "Loading picture: %s\n", bmpfile);
|
||
|
|
picture = SDL_LoadBMP(bmpfile);
|
||
|
|
if (picture == NULL) {
|
||
|
|
fprintf(stderr, "Couldn't load %s: %s\n", bmpfile, SDL_GetError());
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Set the display colors -- on a hicolor display this is a no-op */
|
||
|
|
if (picture->format->palette) {
|
||
|
|
ncolors = picture->format->palette->ncolors;
|
||
|
|
colors = (SDL_Color *) malloc(ncolors * sizeof(SDL_Color));
|
||
|
|
cmap = (SDL_Color *) malloc(ncolors * sizeof(SDL_Color));
|
||
|
|
memcpy(colors, picture->format->palette->colors,
|
||
|
|
ncolors * sizeof(SDL_Color));
|
||
|
|
} else {
|
||
|
|
int r, g, b;
|
||
|
|
|
||
|
|
/* Allocate 256 color palette */
|
||
|
|
ncolors = 256;
|
||
|
|
colors = (SDL_Color *) malloc(ncolors * sizeof(SDL_Color));
|
||
|
|
cmap = (SDL_Color *) malloc(ncolors * sizeof(SDL_Color));
|
||
|
|
|
||
|
|
/* Set a 3,3,2 color cube */
|
||
|
|
for (r = 0; r < 8; ++r) {
|
||
|
|
for (g = 0; g < 8; ++g) {
|
||
|
|
for (b = 0; b < 4; ++b) {
|
||
|
|
i = ((r << 5) | (g << 2) | b);
|
||
|
|
colors[i].r = r << 5;
|
||
|
|
colors[i].g = g << 5;
|
||
|
|
colors[i].b = b << 6;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
NOTICE("testwin: setting colors\n");
|
||
|
|
if (!SDL_SetColors(screen, colors, 0, ncolors) &&
|
||
|
|
(screen->format->palette != NULL)) {
|
||
|
|
fprintf(stderr,
|
||
|
|
"Warning: Couldn't set all of the colors, but SDL will map the image\n"
|
||
|
|
" (colormap fading will suffer - try the -warp option)\n");
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Display the picture */
|
||
|
|
if (speedy) {
|
||
|
|
SDL_Surface *displayfmt;
|
||
|
|
|
||
|
|
fprintf(stderr, "Converting picture\n");
|
||
|
|
displayfmt = SDL_DisplayFormat(picture);
|
||
|
|
if (displayfmt == NULL) {
|
||
|
|
fprintf(stderr, "Couldn't convert image: %s\n", SDL_GetError());
|
||
|
|
goto done;
|
||
|
|
}
|
||
|
|
SDL_FreeSurface(picture);
|
||
|
|
picture = displayfmt;
|
||
|
|
}
|
||
|
|
printf("(image surface located in %s memory)\n",
|
||
|
|
(picture->flags & SDL_HWSURFACE) ? "video" : "system");
|
||
|
|
centered = (screen->w - picture->w) / 2;
|
||
|
|
if (centered < 0) {
|
||
|
|
centered = 0;
|
||
|
|
}
|
||
|
|
dest.y = (screen->h - picture->h) / 2;
|
||
|
|
dest.w = picture->w;
|
||
|
|
dest.h = picture->h;
|
||
|
|
NOTICE("testwin: moving image\n");
|
||
|
|
for (i = 0; i <= centered; ++i) {
|
||
|
|
dest.x = i;
|
||
|
|
update = dest;
|
||
|
|
if (SDL_BlitSurface(picture, NULL, screen, &update) < 0) {
|
||
|
|
fprintf(stderr, "Blit failed: %s\n", SDL_GetError());
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
if (flip) {
|
||
|
|
SDL_Flip(screen);
|
||
|
|
} else {
|
||
|
|
SDL_UpdateRects(screen, 1, &update);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
#ifdef SCREENSHOT
|
||
|
|
if (SDL_SaveBMP(screen, "screen.bmp") < 0)
|
||
|
|
printf("Couldn't save screen: %s\n", SDL_GetError());
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#ifndef BENCHMARK_SDL
|
||
|
|
/* Let it sit there for a while */
|
||
|
|
SDL_Delay(5 * 1000);
|
||
|
|
#endif
|
||
|
|
/* Fade the colormap */
|
||
|
|
if (!nofade) {
|
||
|
|
int maxstep;
|
||
|
|
SDL_Color final;
|
||
|
|
SDL_Color palcolors[256];
|
||
|
|
struct
|
||
|
|
{
|
||
|
|
Sint16 r, g, b;
|
||
|
|
} cdist[256];
|
||
|
|
|
||
|
|
NOTICE("testwin: fading out...\n");
|
||
|
|
memcpy(cmap, colors, ncolors * sizeof(SDL_Color));
|
||
|
|
maxstep = 32 - 1;
|
||
|
|
final.r = 0xFF;
|
||
|
|
final.g = 0x00;
|
||
|
|
final.b = 0x00;
|
||
|
|
memcpy(palcolors, colors, ncolors * sizeof(SDL_Color));
|
||
|
|
for (i = 0; i < ncolors; ++i) {
|
||
|
|
cdist[i].r = final.r - palcolors[i].r;
|
||
|
|
cdist[i].g = final.g - palcolors[i].g;
|
||
|
|
cdist[i].b = final.b - palcolors[i].b;
|
||
|
|
}
|
||
|
|
for (i = 0; i <= maxstep / 2; ++i) { /* halfway fade */
|
||
|
|
int c;
|
||
|
|
for (c = 0; c < ncolors; ++c) {
|
||
|
|
colors[c].r = palcolors[c].r + ((cdist[c].r * i)) / maxstep;
|
||
|
|
colors[c].g = palcolors[c].g + ((cdist[c].g * i)) / maxstep;
|
||
|
|
colors[c].b = palcolors[c].b + ((cdist[c].b * i)) / maxstep;
|
||
|
|
}
|
||
|
|
SDL_SetColors(screen, colors, 0, ncolors);
|
||
|
|
SDL_Delay(1);
|
||
|
|
}
|
||
|
|
final.r = 0x00;
|
||
|
|
final.g = 0x00;
|
||
|
|
final.b = 0x00;
|
||
|
|
memcpy(palcolors, colors, ncolors * sizeof(SDL_Color));
|
||
|
|
for (i = 0; i < ncolors; ++i) {
|
||
|
|
cdist[i].r = final.r - palcolors[i].r;
|
||
|
|
cdist[i].g = final.g - palcolors[i].g;
|
||
|
|
cdist[i].b = final.b - palcolors[i].b;
|
||
|
|
}
|
||
|
|
maxstep /= 2;
|
||
|
|
for (i = 0; i <= maxstep; ++i) { /* finish fade out */
|
||
|
|
int c;
|
||
|
|
for (c = 0; c < ncolors; ++c) {
|
||
|
|
colors[c].r = palcolors[c].r + ((cdist[c].r * i)) / maxstep;
|
||
|
|
colors[c].g = palcolors[c].g + ((cdist[c].g * i)) / maxstep;
|
||
|
|
colors[c].b = palcolors[c].b + ((cdist[c].b * i)) / maxstep;
|
||
|
|
}
|
||
|
|
SDL_SetColors(screen, colors, 0, ncolors);
|
||
|
|
SDL_Delay(1);
|
||
|
|
}
|
||
|
|
for (i = 0; i < ncolors; ++i) {
|
||
|
|
colors[i].r = final.r;
|
||
|
|
colors[i].g = final.g;
|
||
|
|
colors[i].b = final.b;
|
||
|
|
}
|
||
|
|
SDL_SetColors(screen, colors, 0, ncolors);
|
||
|
|
NOTICE("testwin: fading in...\n");
|
||
|
|
memcpy(palcolors, colors, ncolors * sizeof(SDL_Color));
|
||
|
|
for (i = 0; i < ncolors; ++i) {
|
||
|
|
cdist[i].r = cmap[i].r - palcolors[i].r;
|
||
|
|
cdist[i].g = cmap[i].g - palcolors[i].g;
|
||
|
|
cdist[i].b = cmap[i].b - palcolors[i].b;
|
||
|
|
}
|
||
|
|
for (i = 0; i <= maxstep; ++i) { /* 32 step fade in */
|
||
|
|
int c;
|
||
|
|
for (c = 0; c < ncolors; ++c) {
|
||
|
|
colors[c].r = palcolors[c].r + ((cdist[c].r * i)) / maxstep;
|
||
|
|
colors[c].g = palcolors[c].g + ((cdist[c].g * i)) / maxstep;
|
||
|
|
colors[c].b = palcolors[c].b + ((cdist[c].b * i)) / maxstep;
|
||
|
|
}
|
||
|
|
SDL_SetColors(screen, colors, 0, ncolors);
|
||
|
|
SDL_Delay(1);
|
||
|
|
}
|
||
|
|
NOTICE("testwin: fading over\n");
|
||
|
|
}
|
||
|
|
|
||
|
|
done:
|
||
|
|
/* Free the picture and return */
|
||
|
|
SDL_FreeSurface(picture);
|
||
|
|
free(colors);
|
||
|
|
free(cmap);
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
int
|
||
|
|
main(int argc, char *argv[])
|
||
|
|
{
|
||
|
|
SDL_Surface *screen;
|
||
|
|
/* Options */
|
||
|
|
int speedy, flip, nofade;
|
||
|
|
int delay;
|
||
|
|
int w, h;
|
||
|
|
int desired_bpp;
|
||
|
|
Uint32 video_flags;
|
||
|
|
#ifdef BENCHMARK_SDL
|
||
|
|
Uint32 then, now;
|
||
|
|
#endif
|
||
|
|
/* Set default options and check command-line */
|
||
|
|
speedy = 0;
|
||
|
|
flip = 0;
|
||
|
|
nofade = 0;
|
||
|
|
delay = 1;
|
||
|
|
|
||
|
|
#ifdef _WIN32_WCE
|
||
|
|
w = 240;
|
||
|
|
h = 320;
|
||
|
|
desired_bpp = 8;
|
||
|
|
video_flags = SDL_FULLSCREEN;
|
||
|
|
#else
|
||
|
|
w = 640;
|
||
|
|
h = 480;
|
||
|
|
desired_bpp = 0;
|
||
|
|
video_flags = 0;
|
||
|
|
#endif
|
||
|
|
if (SDL_Init(SDL_INIT_VIDEO) < 0) {
|
||
|
|
fprintf(stderr, "Couldn't initialize SDL: %s\n", SDL_GetError());
|
||
|
|
return (1);
|
||
|
|
}
|
||
|
|
|
||
|
|
while (argc > 1) {
|
||
|
|
if (strcmp(argv[1], "-speedy") == 0) {
|
||
|
|
speedy = 1;
|
||
|
|
argv += 1;
|
||
|
|
argc -= 1;
|
||
|
|
} else if (strcmp(argv[1], "-nofade") == 0) {
|
||
|
|
nofade = 1;
|
||
|
|
argv += 1;
|
||
|
|
argc -= 1;
|
||
|
|
} else if (strcmp(argv[1], "-delay") == 0) {
|
||
|
|
if (argv[2]) {
|
||
|
|
delay = atoi(argv[2]);
|
||
|
|
argv += 2;
|
||
|
|
argc -= 2;
|
||
|
|
} else {
|
||
|
|
fprintf(stderr, "The -delay option requires an argument\n");
|
||
|
|
quit(1);
|
||
|
|
}
|
||
|
|
} else if (strcmp(argv[1], "-width") == 0) {
|
||
|
|
if (argv[2] && ((w = atoi(argv[2])) > 0)) {
|
||
|
|
argv += 2;
|
||
|
|
argc -= 2;
|
||
|
|
} else {
|
||
|
|
fprintf(stderr, "The -width option requires an argument\n");
|
||
|
|
quit(1);
|
||
|
|
}
|
||
|
|
} else if (strcmp(argv[1], "-height") == 0) {
|
||
|
|
if (argv[2] && ((h = atoi(argv[2])) > 0)) {
|
||
|
|
argv += 2;
|
||
|
|
argc -= 2;
|
||
|
|
} else {
|
||
|
|
fprintf(stderr, "The -height option requires an argument\n");
|
||
|
|
quit(1);
|
||
|
|
}
|
||
|
|
} else if (strcmp(argv[1], "-bpp") == 0) {
|
||
|
|
if (argv[2]) {
|
||
|
|
desired_bpp = atoi(argv[2]);
|
||
|
|
argv += 2;
|
||
|
|
argc -= 2;
|
||
|
|
} else {
|
||
|
|
fprintf(stderr, "The -bpp option requires an argument\n");
|
||
|
|
quit(1);
|
||
|
|
}
|
||
|
|
} else if (strcmp(argv[1], "-warp") == 0) {
|
||
|
|
video_flags |= SDL_HWPALETTE;
|
||
|
|
argv += 1;
|
||
|
|
argc -= 1;
|
||
|
|
} else if (strcmp(argv[1], "-hw") == 0) {
|
||
|
|
video_flags |= SDL_HWSURFACE;
|
||
|
|
argv += 1;
|
||
|
|
argc -= 1;
|
||
|
|
} else if (strcmp(argv[1], "-flip") == 0) {
|
||
|
|
video_flags |= SDL_DOUBLEBUF;
|
||
|
|
argv += 1;
|
||
|
|
argc -= 1;
|
||
|
|
} else if (strcmp(argv[1], "-fullscreen") == 0) {
|
||
|
|
video_flags |= SDL_FULLSCREEN;
|
||
|
|
argv += 1;
|
||
|
|
argc -= 1;
|
||
|
|
} else
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Initialize the display */
|
||
|
|
screen = SDL_SetVideoMode(w, h, desired_bpp, video_flags);
|
||
|
|
if (screen == NULL) {
|
||
|
|
fprintf(stderr, "Couldn't set %dx%dx%d video mode: %s\n",
|
||
|
|
w, h, desired_bpp, SDL_GetError());
|
||
|
|
quit(1);
|
||
|
|
}
|
||
|
|
printf("Set%s %dx%dx%d mode\n",
|
||
|
|
screen->flags & SDL_FULLSCREEN ? " fullscreen" : "",
|
||
|
|
screen->w, screen->h, screen->format->BitsPerPixel);
|
||
|
|
printf("(video surface located in %s memory)\n",
|
||
|
|
(screen->flags & SDL_HWSURFACE) ? "video" : "system");
|
||
|
|
if (screen->flags & SDL_DOUBLEBUF) {
|
||
|
|
printf("Double-buffering enabled\n");
|
||
|
|
flip = 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Set the window manager title bar */
|
||
|
|
SDL_WM_SetCaption("SDL test window", "testwin");
|
||
|
|
|
||
|
|
/* Do all the drawing work */
|
||
|
|
#ifdef BENCHMARK_SDL
|
||
|
|
then = SDL_GetTicks();
|
||
|
|
DrawPict(screen, argv[1], speedy, flip, nofade);
|
||
|
|
now = SDL_GetTicks();
|
||
|
|
printf("Time: %d milliseconds\n", now - then);
|
||
|
|
#else
|
||
|
|
DrawPict(screen, argv[1], speedy, flip, nofade);
|
||
|
|
#endif
|
||
|
|
SDL_Delay(delay * 1000);
|
||
|
|
SDL_Quit();
|
||
|
|
return (0);
|
||
|
|
}
|