mirror of
https://github.com/portapack-mayhem/mayhem-firmware.git
synced 2024-12-13 19:54:39 +00:00
65 lines
1.8 KiB
C++
65 lines
1.8 KiB
C++
/*
|
|
* Copyright (C) 2016 Jared Boone, ShareBrained Technology, Inc.
|
|
*
|
|
* This file is part of PortaPack.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2, or (at your option)
|
|
* any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; see the file COPYING. If not, write to
|
|
* the Free Software Foundation, Inc., 51 Franklin Street,
|
|
* Boston, MA 02110-1301, USA.
|
|
*/
|
|
|
|
#ifndef __PNG_WRITER_H__
|
|
#define __PNG_WRITER_H__
|
|
|
|
#include <cstdint>
|
|
#include <cstddef>
|
|
#include <string>
|
|
#include <array>
|
|
|
|
#include "ui.hpp"
|
|
#include "file.hpp"
|
|
#include "crc.hpp"
|
|
|
|
class PNGWriter {
|
|
public:
|
|
~PNGWriter();
|
|
|
|
Optional<File::Error> create(const std::filesystem::path& filename);
|
|
|
|
void write_scanline(const std::array<ui::ColorRGB888, 240>& scanline);
|
|
|
|
private:
|
|
// TODO: These constants are baked in a few places, do not change blithely.
|
|
static constexpr int width { 240 };
|
|
static constexpr int height { 320 };
|
|
|
|
File file { };
|
|
int scanline_count { 0 };
|
|
CRC<32, true, true> crc { 0x04c11db7, 0xffffffff, 0xffffffff };
|
|
Adler32 adler_32 { };
|
|
|
|
void write_chunk_header(const size_t length, const std::array<uint8_t, 4>& type);
|
|
void write_chunk_content(const void* const p, const size_t count);
|
|
|
|
template<size_t N>
|
|
void write_chunk_content(const std::array<uint8_t, N>& data) {
|
|
write_chunk_content(data.data(), sizeof(data));
|
|
}
|
|
|
|
void write_chunk_crc();
|
|
void write_uint32_be(const uint32_t v);
|
|
};
|
|
|
|
#endif/*__PNG_WRITER_H__*/
|