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#include "sigdb_qt.hpp"
#include "signature_db.hpp"
#include <algorithm>
signature_config cfg_full =
{
9, //slices
3, //blur_window
2, //min_window
true, //crop
true, //comp
0.5, //pr
1./128, //noise_threshold
0.05, //contrast_threshold
0.25 //max_cropping
};
signature_config cfg_subslice =
{
4, //slices
16, //blur_window
2, //min_window
false, //crop
true, //comp
0.5, //pr
1./64, //noise_threshold
0.05, //contrast_threshold
0.25 //max_cropping
};
SignatureDB::SignatureDB() : QObject(nullptr)
{
sdb = new signature_db();
}
SignatureDB::SignatureDB(const fs::path &dbpath) : QObject(nullptr)
{
sdb = new signature_db(dbpath);
create_priv_struct();
}
SignatureDB::~SignatureDB()
{
delete sdb;
}
void SignatureDB::create_priv_struct()
{
if (!valid()) return;
auto ids = sdb->get_image_ids();
sdb->batch_get_signature_begin();
for (auto &id : ids)
{
fs::path p;
std::tie(p, std::ignore) = sdb->get_signature(id);
fmap[id] = p;
frmap[p] = id;
}
sdb->batch_get_signature_end();
auto dupes = sdb->dupe_pairs();
for (auto &dupe : dupes)
distmap[std::make_pair(dupe.id1, dupe.id2)] = dupe.distance;
sdb->group_similar();
auto gps = sdb->groups_get();
gps.erase(std::remove_if(gps.begin(), gps.end(), [](std::vector<size_t> v){ return v.size() < 2; }), gps.end());
this->groups = std::move(gps);
}
bool SignatureDB::valid()
{
return sdb->valid();
}
void SignatureDB::scan_files(const std::vector<fs::path> &files, int njobs)
{
populate_cfg_t pcfg = {
3,
3,
cfg_full,
cfg_subslice,
0.3,
[this](size_t c,int){Q_EMIT image_scanned(c);},
njobs
};
sdb->populate(files, pcfg);
Q_EMIT image_scanned(~size_t(0));
create_priv_struct();
}
void SignatureDB::interrupt_scan()
{
if (sdb)
sdb->populate_interrupt();
}
size_t SignatureDB::num_groups()
{
return groups.size();
}
std::vector<size_t> SignatureDB::get_group(size_t gid)
{
if (gid >= groups.size()) return {};
return groups[gid];
}
std::map<std::pair<size_t, size_t>, double> SignatureDB::group_distances(size_t gid)
{
std::map<std::pair<size_t, size_t>, double> ret;
auto g = get_group(gid);
for (size_t i = 0; i < g.size(); ++i)
for (size_t j = i + 1; j < g.size(); ++j)
{
size_t x = g[i], y = g[j];
if (distmap.find(std::make_pair(x, y)) != distmap.end())
ret[std::make_pair(i, j)] = distmap[std::make_pair(x, y)];
else if (distmap.find(std::make_pair(y, x)) != distmap.end())
ret[std::make_pair(i, j)] = distmap[std::make_pair(y, x)];
}
return ret;
}
fs::path SignatureDB::get_image_path(size_t id)
{
if (fmap.find(id) == fmap.end())
return fs::path();
else return fmap[id];
}
size_t SignatureDB::get_path_id(const fs::path& p)
{
if (frmap.find(p) == frmap.end())
return ~size_t(0);
else return frmap[p];
}
bool SignatureDB::load(const fs::path &p)
{
return sdb->from_db_file(p);
}
bool SignatureDB::save(const fs::path &p)
{
return sdb->to_db_file(p);
}
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