#include #include #include "compressed_image.hpp" namespace jcmp{ bool operator==(coefficient const & lhs, coefficient const & rhs){ return lhs.c == rhs.c && lhs.x == rhs.x && lhs.y == rhs.y; } } struct gen{ jcmp::uint width, x, y; jcmp::coefficient operator()(){ ++x; if(x > width){ x = 0; ++y; } // only for testing purpose :D return {rand() / double(RAND_MAX), x, y}; } }; void test_correctness(){ const int w = 1024, h = 512; std::vector v(w*h / 100); std::generate(v.begin(), v.end(), gen{w, 0, 0}); { // iterator method jcmp::write_to_file({w, h}, v.begin(), v.end(), "test.jcmp"); auto j = jcmp::read_from_file("test.jcmp"); assert(w == j.header.width); assert(h == j.header.height); assert(v == j.data); } { // copy method jcmp::image i(w, h, std::move(v)); jcmp::write_to_file(i, "test.jcmp"); auto j = jcmp::read_from_file("test.jcmp"); assert(w == j.header.width); assert(h == j.header.height); assert(i.data == j.data); } } void test_speed(){ const int w = 4000, h = 8000; std::vector input(w*h / 20); std::generate(input.begin(), input.end(), gen{w, 0, 0}); for(int i = 0; i < 10; ++i){ { timer t("stream"); jcmp::write_to_file({w, h}, input.begin(), input.end(), "stream.jcmp"); } std::vector copy(w*h / 20); std::copy(input.begin(), input.end(), copy.begin()); { timer t("move"); jcmp::image i(w, h, std::move(copy)); jcmp::write_to_file(i, "move.jcmp"); } { timer t("copy"); jcmp::image i(w, h, input); jcmp::write_to_file(i, "copy.jcmp"); } } } int main(){ srand(time(0)); test_correctness(); std::cout << "Test succeeded" << std::endl; test_speed(); std::cout << "Test completed" << std::endl; }