mirror of
https://github.com/eried/portapack-mayhem.git
synced 2024-10-01 01:26:06 -04:00
135 lines
3.2 KiB
C++
135 lines
3.2 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.
|
|
*/
|
|
|
|
#include "wavfile.hpp"
|
|
|
|
#include "portapack.hpp"
|
|
using namespace portapack;
|
|
|
|
#include "file.hpp"
|
|
#include "time.hpp"
|
|
#include "utility.hpp"
|
|
|
|
#include <cstdint>
|
|
|
|
namespace ui {
|
|
|
|
int WAVFileReader::open(const std::string& filename) {
|
|
if (filename == last_filename) {
|
|
rewind();
|
|
return 1; // Already open
|
|
}
|
|
|
|
auto error = file.open(filename);
|
|
|
|
if (!error.is_valid()) {
|
|
file.read((void*)&header, sizeof(header));
|
|
|
|
// TODO: Check validity here
|
|
|
|
last_filename = filename;
|
|
data_start = header.fmt.cksize + 28; // Skip "data" and cksize
|
|
|
|
data_size_ = header.data.cksize;
|
|
sample_rate_ = header.fmt.nSamplesPerSec;
|
|
bytes_per_sample = header.fmt.wBitsPerSample / 8;
|
|
|
|
rewind();
|
|
|
|
return 1;
|
|
} else {
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
size_t WAVFileReader::read(void * const data, const size_t bytes_to_read) {
|
|
return file.read(data, bytes_to_read).value();
|
|
}
|
|
|
|
void WAVFileReader::rewind() {
|
|
file.seek(data_start);
|
|
}
|
|
|
|
uint32_t WAVFileReader::ms_duration() {
|
|
return ((data_size_ * 1000) / sample_rate_) / bytes_per_sample;
|
|
}
|
|
|
|
int WAVFileReader::seek_mss(const uint16_t minutes, const uint8_t seconds, const uint32_t samples) {
|
|
const auto result = file.seek(data_start + ((((minutes * 60) + seconds) * sample_rate_) + samples) * bytes_per_sample);
|
|
|
|
if (result.is_error())
|
|
return 0;
|
|
|
|
return 1;
|
|
}
|
|
|
|
uint16_t WAVFileReader::channels() {
|
|
return header.fmt.nChannels;
|
|
}
|
|
|
|
uint32_t WAVFileReader::sample_rate() {
|
|
return sample_rate_;
|
|
}
|
|
|
|
uint32_t WAVFileReader::data_size() {
|
|
return data_size_;
|
|
}
|
|
|
|
uint16_t WAVFileReader::bits_per_sample() {
|
|
return header.fmt.wBitsPerSample;
|
|
}
|
|
|
|
WAVFileWriter::~WAVFileWriter() {
|
|
update_header();
|
|
}
|
|
|
|
Optional<File::Error> WAVFileWriter::create(
|
|
const std::string& filename
|
|
) {
|
|
const auto create_error = FileWriter::create(filename);
|
|
if( create_error.is_valid() ) {
|
|
return create_error;
|
|
} else {
|
|
return update_header();
|
|
}
|
|
}
|
|
|
|
Optional<File::Error> WAVFileWriter::update_header() {
|
|
header.set_data_size(bytes_written);
|
|
const auto seek_0_result = file.seek(0);
|
|
if( seek_0_result.is_error() ) {
|
|
return seek_0_result.error();
|
|
}
|
|
const auto old_position = seek_0_result.value();
|
|
const auto write_result = file.write(&header, sizeof(header));
|
|
if( write_result.is_error() ) {
|
|
return write_result.error();
|
|
}
|
|
const auto seek_old_result = file.seek(old_position);
|
|
if( seek_old_result.is_error() ) {
|
|
return seek_old_result.error();
|
|
}
|
|
return { };
|
|
}
|
|
|
|
} /* namespace ui */
|