#pragma once

#include "image_file.h"

namespace roro::files {

// A PNG, decoded a row at a time (issue #45): every colour type and bit depth, not interlaced.
// Pixels that are mostly transparent are not handed on. `rowNeeded` lets rows be left out (they
// are still decoded: a row is stored as its difference from the one before); `enough` says that
// from this row on nothing is wanted, and the decoding stops there.
//
// Memory while it runs: the window the file's compression refers back into (what its header asks
// for, 32 KB at most), two rows of the picture, and about 3 KB. The display library's decoder
// wanted 44 KB in one block, which this device often doesn't have.
//
// "" or why it can't be shown.
std::string readPng(const ImageRead& read, uint32_t size, const ImagePixels& pixels, const std::function<bool(int y)>& rowNeeded = nullptr,
                    const std::function<bool(int y)>& enough = nullptr);

}  // namespace roro::files