mirror of
https://github.com/portapack-mayhem/mayhem-firmware.git
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64 lines
1.8 KiB
C++
64 lines
1.8 KiB
C++
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/*
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* Copyright (C) 2016 Jared Boone, ShareBrained Technology, Inc.
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*
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* This file is part of PortaPack.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; see the file COPYING. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street,
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* Boston, MA 02110-1301, USA.
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*/
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#ifndef __PNG_WRITER_H__
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#define __PNG_WRITER_H__
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#include <cstdint>
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#include <cstddef>
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#include <string>
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#include <array>
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#include "ui.hpp"
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#include "file.hpp"
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#include "crc.hpp"
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class PNGWriter {
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public:
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explicit PNGWriter(const std::string& filename);
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~PNGWriter();
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void write_scanline(const std::array<ui::ColorRGB888, 240>& scanline);
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private:
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// TODO: These constants are baked in a few places, do not change blithely.
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static constexpr int width { 240 };
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static constexpr int height { 320 };
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File file;
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int scanline_count { 0 };
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CRC<32, true, true> crc { 0x04c11db7, 0xffffffff, 0xffffffff };
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Adler32 adler_32;
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void write_chunk_header(const size_t length, const std::array<uint8_t, 4>& type);
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void write_chunk_content(const void* const p, const size_t count);
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template<size_t N>
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void write_chunk_content(const std::array<uint8_t, N>& data) {
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write_chunk_content(data.data(), sizeof(data));
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}
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void write_chunk_crc();
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void write_uint32_be(const uint32_t v);
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};
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#endif/*__PNG_WRITER_H__*/
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