42 lines
1.4 KiB
C++
42 lines
1.4 KiB
C++
#include "pixels.hpp"
|
|
#include <libscterm.hpp>
|
|
#include <memory>
|
|
#include <netpbm/pam.h>
|
|
|
|
void write_image(std::ostream &os, FILE *in) {
|
|
struct pam info;
|
|
pnm_readpaminit(in, &info, PAM_STRUCT_SIZE(tuple_type));
|
|
std::unique_ptr<tuple, void (*)(void *)> row1{pnm_allocpamrow(&info),
|
|
pm_freerow};
|
|
std::unique_ptr<tuple, void (*)(void *)> row2{pnm_allocpamrow(&info),
|
|
pm_freerow};
|
|
for (int y = 0; y < info.height; y += 2) {
|
|
tuple *t1{row1.get()};
|
|
tuple *t2{row2.get()};
|
|
pnm_readpamrow(&info, row1.get());
|
|
if (y < info.height - 1) {
|
|
pnm_readpamrow(&info, row2.get());
|
|
}
|
|
for (int x = 0; x < info.width; ++x) {
|
|
if (info.depth == 3) { // assume RGB, 1 byte per sample
|
|
os << sc::io::truecolorf(t1[x][0], t1[x][1], t1[x][2]);
|
|
if (y < info.height - 1) {
|
|
os << sc::io::truecolorb(t2[x][0], t2[x][1], t2[x][2]);
|
|
} else {
|
|
os << sc::io::defaultb;
|
|
}
|
|
os << u8"\u2580"; // unicode upper half block
|
|
}
|
|
}
|
|
os << sc::io::reset << '\n';
|
|
}
|
|
}
|
|
|
|
void write_image(std::ostream &os) { write_image(os, stdin); }
|
|
|
|
void write_image(std::ostream &os, const std::string &path) {
|
|
std::unique_ptr<FILE, void (*)(FILE *)> infile{pm_openr(path.c_str()),
|
|
pm_close};
|
|
write_image(os, infile.get());
|
|
}
|