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Added option to write the output to file

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This commit is contained in:
Jakub 2011-09-20 19:34:00 +02:00
parent 9c21b96544
commit 8cb12aae2c
1 changed files with 23 additions and 2 deletions
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25
host/ledbar.c
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@ -234,15 +234,24 @@ void programP(int i, int t, double *r, double *g, double *b)
}
void drawScreen(SDL_Surface* screen, int t)
void drawScreen(SDL_Surface* screen, int t, FILE* fp)
{
int i;
double r, g, b;
unsigned char c;
if(SDL_MUSTLOCK(screen) && SDL_LockSurface(screen) < 0) return;
for (i=0; i<BOXES; ++i) {
program(i, t, &r, &g, &b);
if (fp) {
c = r*255;
fwrite(&c, sizeof c, 1, fp);
c = g*255;
fwrite(&c, sizeof c, 1, fp);
c = b*255;
fwrite(&c, sizeof c, 1, fp);
}
#ifdef DEBUG
printf("%2d %d %f %f %f\n", i, t, r, g, b);
#endif
@ -263,6 +272,14 @@ int main(int argc, char* argv[])
int size;
int lastUpdate = 0;
int sleep;
FILE* fp;
if (argc == 1) fp = 0;
else if (argc == 2) fp = fopen(argv[1], "wb");
else {
printf("Usage: %s [output]\n", argv[0]);
return 1;
}
if (SDL_Init(SDL_INIT_VIDEO) < 0) return 1;
if (!(screen = SDL_SetVideoMode(RESX, RESY, BPP, SDL_HWSURFACE))) {
@ -278,7 +295,7 @@ int main(int argc, char* argv[])
}
program = programQ;
while (!quit) {
drawScreen(screen,t++);
drawScreen(screen, t++, fp);
while(SDL_PollEvent(&event)) {
switch (event.type) {
case SDL_QUIT:
@ -308,5 +325,9 @@ int main(int argc, char* argv[])
lastUpdate += 25;
}
SDL_Quit();
if (fp) {
fclose(fp);
fp = 0;
}
return 0;
}