int main(int argc, char** argv) {
if(argc != 5 && argc != 4) syntax();
int startarg = 1;
int x=INT_MAX,y=INT_MAX,xmax=INT_MIN,ymax=INT_MIN,w=-1,h=-1;
if(strncmp(argv[1], "-dim=", 5) == 0) {
sscanf(argv[1]+5, "%d,%d,%d,%d", &x, &y, &w, &h);
startarg++;
}
const char* pic1 = argv[startarg++];
const char* pic2 = argv[startarg++];
const char* out = argv[startarg++];
struct Pix* p1 = pixRead(pic1);
struct Pix* p2 = pixRead(pic2);
if(p1->h != p2->h || p1->w != p2->w) {
dprintf(2, "error: both pics need same dimensions!");
exit(1);
}
struct Pix* p1b = pixConvertTo32(p1);
struct Pix* p2b = pixConvertTo32(p2);
int X, Y, W = p1->w, H = p1->h;
if(x == INT_MAX) {
for(Y = 0; Y < H; Y++) {
for(X = 0; X < W; X++) {
if(((uint32_t*)p1b->data)[Y * W + X] != ((uint32_t*)p2b->data)[Y * W + X]) {
if(X < x) x = X;
if(X > xmax) xmax = X;
if(Y < y) y = Y;
if(Y > ymax) ymax = Y;
}
}
}
++xmax; ++ymax;
w = xmax - x;
h = ymax - y;
}
struct Pix* po = pixCreate(w,h,32);
int ox, oy;
for(oy = 0, Y = y; Y < y + h; oy++, Y++) for(ox = 0, X = x; X < x + w; ox++, X++) {
if(((uint32_t*)p1b->data)[Y * W + X] != ((uint32_t*)p2b->data)[Y * W + X])
((uint32_t*)po->data)[oy * w + ox] = ((uint32_t*)p2b->data)[Y * W + X];
else
((uint32_t*)po->data)[oy * w + ox] = 0;
}
pixWritePng(out, po, 0);
dprintf(1, "wrote pixels x,y,w,h: %d,%d,%d,%d to %s\n", x,y,w,h,out);
return 0;
}
int main() {
const struct palpic* f = & sprite .header;
PIX* o = pixCreate(f->width*scramble_factor, palpic_getspritecount(f) * palpic_getspriteheight(f)/scramble_factor, 32);
prgb* palette = palpic_getpalette(f);
prgb* bufptr = (prgb*) o->data;
size_t i;
for(i = 0; i < f->spritecount; i++) {
int x, y;
const uint8_t *source = palpic_getspritedata(f, i);
for(y = 0; y < palpic_getspriteheight(f); y++) {
for(x = 0; x < palpic_getspritewidth(f); x++) {
*bufptr++ = palette[*source++];
}
}
}
pixWritePng("test.png", o, 0.0);
return 0;
}
/*!
* pixWriteRGBAPng()
*
* Input: filename
* pix (rgba)
* Return: 0 if OK, 1 on error
*
* Notes:
* (1) Wrapper to write the alpha sample of a 32 bpp pix to
* a png file in rgba format.
* (2) The default behavior of pix write to png is to ignore
* the alpha sample.
* (3) This always leaves alpha writing in the same mode as
* when this function begins. So if alpha writing is in
* default mode, this enables it, writes out a rgba png file
* that includes the alpha channel, and resets to default.
* Otherwise, it leaves alpha writing enabled.
*/
l_int32
pixWriteRGBAPng(const char *filename,
PIX *pix)
{
l_int32 ret;
PROCNAME("pixWriteRGBAPng");
if (!pix)
return ERROR_INT("pix not defined", procName, 1);
if (!filename)
return ERROR_INT("filename not defined", procName, 1);
/* If alpha channel writing is enabled, just write it */
if (var_PNG_WRITE_ALPHA == TRUE)
return pixWrite(filename, pix, IFF_PNG);
l_pngSetWriteAlpha(1);
ret = pixWritePng(filename, pix, 0.0);
l_pngSetWriteAlpha(0); /* reset to default */
return ret;
}
int main(int argc, char**argv) {
if(argc != 3) {
dprintf(2, "%s in.png out.png\n", argv[0]);
return 1;
}
const char *in = argv[1];
const char *out = argv[2];
struct Pix* pin = pixRead(in);
struct Pix* pin32 = pixConvertTo32(pin);
struct Pix* pout = pixCreate(59, 16*30, 32);
int xo = 0, yo = 0, i;
uint32_t *od = (void*) pout->data;
for(i = 0; i < 30; i++) {
int xi = 3 + (i % 5) * 64;
int yi = 5 + (i / 5) * 23;
copy_rect(xi, yi, 59, 16, (void*) pin32->data, pin32->w, od);
od += 16*59;
}
pixWritePng(out, pout, 0);
return 0;
}