#include <cstdio>
#include <cstring>
#include <filesystem>
#include <fstream>
#include <string>
#include <unordered_map>
#include <utility>
#include <vector>
#include <thread>
#include <opencv2/core.hpp>
#include <opencv2/imgcodecs.hpp>
#include <opencv2/imgproc.hpp>
#include <getopt.h>
#if PATH_VALSIZE == 2
#include <cwchar>
#endif
#ifdef _WIN32 //for the superior operating system
#define WIN32_LEAN_AND_MEAN
#include <windows.h>
#include <processenv.h>
#include <shellapi.h>
#endif
#include "signature.hpp"
#include "imageutil.hpp"
#include "thread_pool.hpp"
#define DEBUG 0
namespace fs = std::filesystem;
int ctr;
int recursive;
int njobs = 1;
double threshold = 0.3;
std::vector<fs::path> paths;
std::vector<fs::path> files;
int nsliceh = 3;
int nslicev = 3;
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
};
struct sig_eq
{
bool operator()(const signature& a, const signature& b) const
{
//return a.distance(b) < 0.1;
return a == b;
}
};
typedef std::pair<size_t, int> slice_info;
std::unordered_map<signature, std::vector<slice_info>, signature_hash, sig_eq> slices;
std::vector<signature> signatures;
std::mutex sigmtx;
std::vector<std::pair<size_t, size_t>> out;
int parse_arguments(int argc,char **argv)
{
recursive = 0;
int help = 0;
option longopt[]=
{
{"recursive", no_argument , &recursive, 1},
// {"destdir" , required_argument, 0 , 'D'},
{"jobs" , required_argument, 0 , 'j'},
// {"threshold", required_argument, 0 , 'd'},
{"help" , no_argument , &help , 1},
{0 , 0 , 0 , 0}
};
while(1)
{
int idx = 0;
int c = getopt_long(argc, argv, "rhj:", longopt, &idx);
if (!~c) break;
switch (c)
{
case 0:
if (longopt[idx].flag) break;
if (std::string("jobs") == longopt[idx].name)
sscanf(optarg, "%d", &njobs);
//if(std::string("threshold") == longopt[idx].name)
//sscanf(optarg, "%lf", &threshold);
break;
case 'r':
recursive = 1;
break;
case 'h':
help = 1;
break;
case 'j':
sscanf(optarg, "%d", &njobs);
break;
case 'd':
//sscanf(optarg, "%lf", &threshold);
break;
}
}
#ifdef _WIN32 //w*ndows, ugh
wchar_t *args = GetCommandLineW();
int wargc;
wchar_t **wargv = CommandLineToArgvW(args, &wargc);
if (wargv && wargc == argc)
{
for (; optind < argc; ++optind)
paths.push_back(wargv[optind]);
}
#else
for (; optind < argc; ++optind)
paths.push_back(argv[optind]);
#endif
if (help || argc < 2)
{
printf(
"Usage: %s [OPTION] PATH...\n"
"Detect potentially duplicate images in PATHs and optionally perform an action on them.\n\n"
" -h, --help Display this help message and exit.\n"
" -r, --recursive Recurse into all directories.\n"
" -j, --jobs Number of concurrent tasks to run at once.\n"
// " -d, --threshold Threshold distance below which images will be considered similar.\n"
,argv[0]
);
return 1;
}
if (threshold > 1 || threshold < 0)
{
puts("Invalid threshold value.");
return 2;
}
if (threshold < 1e-6) threshold = 1e-6;
if (!paths.size())
{
puts("Missing image path.");
return 2;
}
return 0;
}
void build_file_list(fs::path path, bool recursive, std::vector<fs::path> &out)
{
if (recursive)
{
auto dirit = fs::recursive_directory_iterator(path);
for (auto &p : dirit)
{
std::fstream st(p.path(), std::ios::binary | std::ios::in);
char c[8];
st.read(c, 6);
if (st.gcount() < 6) continue;
if(!memcmp(c,"\x89PNG\r\n", 6) || !memcmp(c,"\xff\xd8\xff", 3))
{
out.push_back(p.path().string());
#if DEBUG > 0
printf("%ld, %s\n", out.size() - 1, out.back().c_str());
#endif
}
st.close();
}
}
else
{
auto dirit = fs::directory_iterator(path);
for(auto &p : dirit)
{
std::fstream st(p.path(), std::ios::binary | std::ios::in);
char c[8];
st.read(c, 6);
if (st.gcount() < 6) continue;
if(!memcmp(c,"\x89PNG\r\n", 6) || !memcmp(c,"\xff\xd8\xff", 3))
{
out.push_back(p.path().string());
#if DEBUG > 0
printf("%ld, %s\n", out.size() - 1, out.back().c_str());
#endif
}
st.close();
}
}
}
void job_func(int thid, size_t id)
{
cv::Mat img = image_util::imread_path(files[id], cv::IMREAD_UNCHANGED);
signature s = signature::from_cvmatrix(&img, cfg_full);
#if DEBUG > 1
s.dump();
#endif
int ssw = img.size().width / nsliceh;
int ssh = img.size().height / nslicev;
std::vector<signature> subsigs;
for (int i = 0; i < nsliceh; ++i)
for (int j = 0; j < nslicev; ++j)
{
int l = i * ssw;
int r = (i == nsliceh) ? img.size().width : (i + 1) * ssw;
int t = j * ssh;
int b = (j == nslicev) ? img.size().height : (j + 1) * ssh;
cv::Mat slice = img(cv::Range(t, b), cv::Range(l, r));
subsigs.push_back(std::move(signature::from_cvmatrix(&slice, cfg_subslice)));
#if DEBUG > 0
printf("%ld, (%d, %d) %lu\n", id, i, j, signature_hash{}(subsigs.back()));
#endif
#if DEBUG > 1
subsigs.back().dump();
#endif
}
printf("%d %lu\r", thid, id);
fflush(stdout);
sigmtx.lock();
std::vector<bool> v;
v.resize(files.size());
for (int i = 0; i < nsliceh * nslicev; ++i)
{
auto it = slices.find(subsigs[i]);
if (it != slices.end())
{
for (auto &si : it->second)
{
if (si.second == i)
{
#if DEBUG > 1
printf("%d@(%ld <-> %ld) %f\n", i, id, si.first, s.distance(signatures[si.first]));
#endif
if (!v[si.first] && s.distance(signatures[si.first]) < threshold)
{
out.emplace_back(id, std::move(si.first));
}
v[si.first] = true;
}
}
it->second.emplace_back(id, i);
}
else
{
slices.emplace(std::move(subsigs[i].clone()),
std::vector<slice_info>{{id, i}});
}
}
signatures[id] = std::move(s);
sigmtx.unlock();
}
void run()
{
thread_pool tp(njobs);
for(size_t i = 0; i < files.size(); ++i)
{
tp.create_task(job_func, i);
}
tp.wait();
}
int main(int argc,char** argv)
{
if (int pr = parse_arguments(argc, argv)) return pr - 1;
puts("building list of files to compare...");
for (auto &p : paths)
build_file_list(p, recursive, files);
printf("%lu files to compare.\n", files.size());
puts("computing signature vectors...");
signatures.resize(files.size());
run();
FILE *outf = fopen("result", "wb");
for (auto &p : out)
{
#if PATH_VALSIZE == 2
wprintf(L"%ls %ls %f\n", files[p.first].c_str(), files[p.second].c_str(), signatures[p.first].distance(signatures[p.second]));
#else
printf("%s %s %f\n", files[p.first].c_str(), files[p.second].c_str(), signatures[p.first].distance(signatures[p.second]));
#endif
int t;
double ts;
t = (int)files[p.first].native().length();
fwrite(&t, sizeof(int), 1, outf);
fwrite(files[p.first].c_str(), sizeof(fs::path::value_type), t, outf);
t = (int)files[p.second].native().length();
fwrite(&t, sizeof(int), 1, outf);
fwrite(files[p.second].c_str(), sizeof(fs::path::value_type), t, outf);
ts = signatures[p.first].distance(signatures[p.second]);
fwrite(&ts, sizeof(double), 1, outf);
}
fclose(outf);
return 0;
}
