portapack-mayhem/firmware/application/io_wave.hpp

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/*
* Copyright (C) 2016 Jared Boone, ShareBrained Technology, Inc.
* Copyright (C) 2016 Furrtek
*
* 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
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#include "io_file.hpp"
#include "file.hpp"
#include "optional.hpp"
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#include <cstddef>
#include <cstdint>
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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 };
};
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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 }
{
}
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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 WAVFileReader : public FileReader {
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public:
WAVFileReader() = default;
WAVFileReader(const WAVFileReader&) = delete;
WAVFileReader& operator=(const WAVFileReader&) = delete;
WAVFileReader(WAVFileReader&&) = delete;
WAVFileReader& operator=(WAVFileReader&&) = delete;
virtual ~WAVFileReader() = default;
bool open(const std::filesystem::path& path);
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void rewind();
uint32_t ms_duration();
//int seek_mss(const uint16_t minutes, const uint8_t seconds, const uint32_t samples);
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uint16_t channels();
uint32_t sample_rate();
uint32_t data_size();
uint16_t bits_per_sample();
std::string title();
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private:
struct fmt_pcm_t {
uint8_t ckID[4]; // fmt
uint32_t cksize;
uint16_t wFormatTag;
uint16_t nChannels;
uint32_t nSamplesPerSec;
uint32_t nAvgBytesPerSec;
uint16_t nBlockAlign;
uint16_t wBitsPerSample;
};
struct data_t {
uint8_t ckID[4]; // data
uint32_t cksize;
};
struct header_t {
uint8_t riff_id[4]; // RIFF
uint32_t cksize;
uint8_t wave_id[4]; // WAVE
fmt_pcm_t fmt;
data_t data;
};
header_t header { };
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uint32_t data_start { };
uint32_t bytes_per_sample { };
uint32_t data_size_ { 0 };
uint32_t sample_rate_ { };
std::string title_string { };
std::filesystem::path last_path { };
};
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class WAVFileWriter : public FileWriter {
public:
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WAVFileWriter() = default;
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WAVFileWriter(const WAVFileWriter&) = delete;
WAVFileWriter& operator=(const WAVFileWriter&) = delete;
WAVFileWriter(WAVFileWriter&&) = delete;
WAVFileWriter& operator=(WAVFileWriter&&) = delete;
~WAVFileWriter() {
update_header();
}
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Optional<File::Error> create(
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const std::filesystem::path& filename,
size_t sampling_rate
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);
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private:
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uint32_t sampling_rate { 0 };
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Optional<File::Error> update_header();
};