mirror of
https://github.com/portapack-mayhem/mayhem-firmware.git
synced 2024-12-15 20:50:28 +00:00
166 lines
3.7 KiB
C++
166 lines
3.7 KiB
C++
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/*
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* Copyright (C) 2016 Jared Boone, ShareBrained Technology, Inc.
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* Copyright (C) 2016 Furrtek
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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 __WAVFILE_H__
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#define __WAVFILE_H__
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#include "filewriter.hpp"
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#include <cstddef>
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#include <string>
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#include <memory>
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namespace ui {
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class WAVFileReader {
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public:
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WAVFileReader() = default;
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WAVFileReader(const WAVFileReader&) = delete;
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WAVFileReader& operator=(const WAVFileReader&) = delete;
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WAVFileReader(WAVFileReader&&) = delete;
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WAVFileReader& operator=(WAVFileReader&&) = delete;
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virtual ~WAVFileReader() = default;
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int open(const std::string& filename);
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void rewind();
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uint32_t ms_duration();
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size_t read(void * const data, const size_t bytes_to_read);
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int seek_mss(const uint16_t minutes, const uint8_t seconds, const uint32_t samples);
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uint16_t channels();
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uint32_t sample_rate();
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uint32_t data_size();
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uint16_t bits_per_sample();
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private:
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File file;
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uint32_t data_start;
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uint32_t bytes_per_sample;
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uint32_t data_size_;
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uint32_t sample_rate_;
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std::string last_filename = "";
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struct fmt_pcm_t {
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uint8_t ckID[4]; // fmt
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uint32_t cksize;
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uint16_t wFormatTag;
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uint16_t nChannels;
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uint32_t nSamplesPerSec;
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uint32_t nAvgBytesPerSec;
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uint16_t nBlockAlign;
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uint16_t wBitsPerSample;
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};
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struct data_t {
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uint8_t ckID[4]; // data
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uint32_t cksize;
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};
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struct header_t {
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uint8_t riff_id[4]; // RIFF
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uint32_t cksize;
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uint8_t wave_id[4]; // WAVE
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fmt_pcm_t fmt;
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data_t data;
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};
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header_t header;
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};
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class WAVFileWriter : public FileWriter {
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public:
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WAVFileWriter(
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size_t sampling_rate
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) : header { sampling_rate }
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{
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}
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WAVFileWriter(const WAVFileWriter&) = delete;
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WAVFileWriter& operator=(const WAVFileWriter&) = delete;
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WAVFileWriter(WAVFileWriter&&) = delete;
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WAVFileWriter& operator=(WAVFileWriter&&) = delete;
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~WAVFileWriter();
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Optional<File::Error> create(const std::string& filename);
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private:
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struct fmt_pcm_t {
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constexpr fmt_pcm_t(
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const uint32_t sampling_rate
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) : nSamplesPerSec { sampling_rate },
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nAvgBytesPerSec { nSamplesPerSec * nBlockAlign }
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{
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}
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private:
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const uint8_t ckID[4] { 'f', 'm', 't', ' ' };
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const uint32_t cksize { 16 };
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const uint16_t wFormatTag { 0x0001 };
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const uint16_t nChannels { 1 };
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const uint32_t nSamplesPerSec;
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const uint32_t nAvgBytesPerSec;
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const uint16_t nBlockAlign { 2 };
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const uint16_t wBitsPerSample { 16 };
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};
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struct data_t {
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void set_size(const uint32_t value) {
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cksize = value;
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}
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private:
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const uint8_t ckID[4] { 'd', 'a', 't', 'a' };
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uint32_t cksize { 0 };
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};
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struct header_t {
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constexpr header_t(
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const uint32_t sampling_rate
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) : fmt { sampling_rate }
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{
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}
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void set_data_size(const uint32_t value) {
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data.set_size(value);
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cksize = sizeof(header_t) + value - 8;
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}
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private:
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const uint8_t riff_id[4] { 'R', 'I', 'F', 'F' };
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uint32_t cksize { 0 };
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const uint8_t wave_id[4] { 'W', 'A', 'V', 'E' };
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fmt_pcm_t fmt;
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data_t data;
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};
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header_t header;
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Optional<File::Error> update_header();
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};
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} /* namespace ui */
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#endif/*__WAVFILE_H__*/
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