portapack-mayhem/firmware/application/io_wave.hpp
2017-08-12 17:51:52 +01:00

187 lines
4.3 KiB
C++

/*
* 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
#include "io_file.hpp"
#include "file.hpp"
#include "optional.hpp"
#include <string.h>
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,
const uint32_t info_chunk_size
) : cksize { sizeof(header_t) + data_chunk_size + info_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;
};
struct tags_t {
constexpr tags_t(
const std::string& title_str
)
{
strcpy(title, title_str.c_str());
cksize = sizeof(tags_t) - 8;
}
private:
uint8_t list_id[4] { 'L', 'I', 'S', 'T' };
uint32_t cksize { 0 };
uint8_t info_id[4] { 'I', 'N', 'F', 'O' };
uint8_t iart_id[4] { 'I', 'A', 'R', 'T' };
uint32_t sckiart_size { 12 };
char artist[12] { "PortaPack\0\0" };
uint8_t inam_id[4] { 'I', 'N', 'A', 'M' };
uint32_t sckinam_size { 64 };
char title[64] { 0 };
};
class WAVFileReader : public FileReader {
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);
void rewind();
uint32_t ms_duration();
//int seek_mss(const uint16_t minutes, const uint8_t seconds, const uint32_t samples);
uint16_t channels();
uint32_t sample_rate();
uint32_t data_size();
uint16_t bits_per_sample();
std::string title();
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 { };
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 { };
};
class WAVFileWriter : public FileWriter {
public:
WAVFileWriter() = default;
WAVFileWriter(const WAVFileWriter&) = delete;
WAVFileWriter& operator=(const WAVFileWriter&) = delete;
WAVFileWriter(WAVFileWriter&&) = delete;
WAVFileWriter& operator=(WAVFileWriter&&) = delete;
~WAVFileWriter() {
write_tags();
update_header();
}
Optional<File::Error> create(
const std::filesystem::path& filename,
size_t sampling_rate,
const std::string& title_set
);
private:
uint32_t sampling_rate { 0 };
uint32_t info_chunk_size { 0 };
std::string title { };
Optional<File::Error> update_header();
Optional<File::Error> write_tags();
};