mirror of
https://github.com/eried/portapack-mayhem.git
synced 2024-10-01 01:26:06 -04:00
105 lines
2.4 KiB
C++
105 lines
2.4 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.
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include "io_file.hpp"
|
|
|
|
#include "file.hpp"
|
|
#include "optional.hpp"
|
|
|
|
#include <cstddef>
|
|
#include <cstdint>
|
|
|
|
struct fmt_pcm_t {
|
|
constexpr fmt_pcm_t(
|
|
const uint32_t sampling_rate
|
|
) : nSamplesPerSec { sampling_rate },
|
|
nAvgBytesPerSec { nSamplesPerSec * nBlockAlign }
|
|
{
|
|
}
|
|
|
|
private:
|
|
uint8_t ckID[4] { 'f', 'm', 't', ' ' };
|
|
uint32_t cksize { 16 };
|
|
uint16_t wFormatTag { 0x0001 };
|
|
uint16_t nChannels { 1 };
|
|
uint32_t nSamplesPerSec;
|
|
uint32_t nAvgBytesPerSec;
|
|
uint16_t nBlockAlign { 2 };
|
|
uint16_t wBitsPerSample { 16 };
|
|
};
|
|
|
|
struct data_t {
|
|
constexpr data_t(
|
|
const uint32_t size
|
|
) : cksize { size }
|
|
{
|
|
}
|
|
|
|
private:
|
|
uint8_t ckID[4] { 'd', 'a', 't', 'a' };
|
|
uint32_t cksize { 0 };
|
|
};
|
|
|
|
struct header_t {
|
|
constexpr header_t(
|
|
const uint32_t sampling_rate,
|
|
const uint32_t data_chunk_size
|
|
) : cksize { sizeof(header_t) + data_chunk_size - 8 },
|
|
fmt { sampling_rate },
|
|
data { data_chunk_size }
|
|
{
|
|
}
|
|
|
|
private:
|
|
uint8_t riff_id[4] { 'R', 'I', 'F', 'F' };
|
|
uint32_t cksize { 0 };
|
|
uint8_t wave_id[4] { 'W', 'A', 'V', 'E' };
|
|
fmt_pcm_t fmt;
|
|
data_t data;
|
|
};
|
|
|
|
class WAVFileWriter : public FileWriter {
|
|
public:
|
|
WAVFileWriter() = default;
|
|
|
|
WAVFileWriter(const WAVFileWriter&) = delete;
|
|
WAVFileWriter& operator=(const WAVFileWriter&) = delete;
|
|
WAVFileWriter(WAVFileWriter&&) = delete;
|
|
WAVFileWriter& operator=(WAVFileWriter&&) = delete;
|
|
|
|
~WAVFileWriter() {
|
|
update_header();
|
|
}
|
|
|
|
Optional<File::Error> create(
|
|
const std::filesystem::path& filename,
|
|
size_t sampling_rate
|
|
);
|
|
|
|
private:
|
|
uint32_t sampling_rate { 0 };
|
|
uint32_t bytes_written { 0 };
|
|
|
|
Optional<File::Error> update_header();
|
|
};
|