const ColorRanges* meta(Images&, const ColorRanges *srcRanges) {
// cb->print();
// in the I buckets, some discrete buckets may have become continuous to keep the colorbucket info small
// this means some Q buckets are empty, which means that some values from the I buckets can be eliminated
really_used = true;
prevPlanes pixelL,pixelU;
pixelL.push_back(cb->min0);
pixelU.push_back(cb->min0+CB0b-1);
pixelL.push_back(cb->min1);
pixelU.push_back(cb->min1+CB1-1);
for (auto bv : cb->bucket2) {
pixelL[1] = cb->min1;
pixelU[1] = cb->min1+CB1-1;
for (auto b : bv) {
if (b.empty()) {
for (ColorVal c=pixelL[1]; c<=pixelU[1]; c++) {
cb->findBucket(1,pixelL).removeColor(c);
cb->findBucket(1,pixelU).removeColor(c);
}
}
pixelL[1] += CB1; pixelU[1] += CB1;
}
pixelL[0] += CB0b; pixelU[0] += CB0b;
}
cb->bucket0.prepare_snapvalues();
cb->bucket3.prepare_snapvalues();
for (auto& b : cb->bucket1) b.prepare_snapvalues();
for (auto& bv : cb->bucket2) for (auto& b : bv) b.prepare_snapvalues();
return new ColorRangesCB(srcRanges, cb);
}
bool process(const ColorRanges *srcRanges, const Images &images) {
std::vector<ColorVal> pixel(images[0].numPlanes());
// fill buckets
for (const Image& image : images)
for (uint32_t r=0; r<image.rows(); r++) {
for (uint32_t c=0; c<image.cols(); c++) {
int p;
for (p=0; p<image.numPlanes(); p++) {
ColorVal v = image(p,r,c);
pixel[p] = v;
}
if (image.alpha_zero_special && p>3 && pixel[3]==0) { cb->findBucket(3, pixel).addColor(0,max_per_colorbucket[3]); continue;}
cb->addColor(pixel);
}
}
cb->bucket0.simplify_lossless();
cb->bucket3.simplify_lossless();
for (auto& b : cb->bucket1) b.simplify_lossless();
for (auto& bv : cb->bucket2) for (auto& b : bv) b.simplify_lossless();
// TODO: IMPROVE THESE HEURISTICS!
// TAKE IMAGE SIZE INTO ACCOUNT!
// CONSIDER RELATIVE AREA OF BUCKETS / BOUNDS!
// printf("Filled color buckets with %i discrete colors + %i continous buckets\n",totaldiscretecolors,totalcontinuousbuckets);
int64_t total_pixels = (int64_t) images.size() * images[0].rows() * images[0].cols();
v_printf(7,", [D=%i,C=%i,P=%i]",totaldiscretecolors,totalcontinuousbuckets,(int) (total_pixels/100));
if (totaldiscretecolors < total_pixels/200 && totalcontinuousbuckets < total_pixels/50) return true;
if (totaldiscretecolors < total_pixels/100 && totalcontinuousbuckets < total_pixels/200) return true;
if (totaldiscretecolors < total_pixels/40 && totalcontinuousbuckets < total_pixels/500) return true;
// simplify buckets
for (int factor = 95; factor >= 35; factor -= 10) {
for (auto& b : cb->bucket1) b.simplify(factor);
for (auto& bv : cb->bucket2) for (auto& b : bv) b.simplify(factor-20);
v_printf(8,"->[D=%i,C=%i]",totaldiscretecolors,totalcontinuousbuckets);
if (totaldiscretecolors < total_pixels/200 && totalcontinuousbuckets < total_pixels/100) return true;
}
return false;
}
ColorBucket bucket(const int p, const prevPlanes &pp) const { return buckets->findBucket(p,pp); }