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