mirror of
https://github.com/eried/portapack-mayhem.git
synced 2024-10-01 01:26:06 -04:00
73 lines
1.9 KiB
C++
73 lines
1.9 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.
|
|
*/
|
|
|
|
#ifndef __STREAM_INPUT_H__
|
|
#define __STREAM_INPUT_H__
|
|
|
|
#include "message.hpp"
|
|
#include "fifo.hpp"
|
|
|
|
#include "lpc43xx_cpp.hpp"
|
|
using namespace lpc43xx;
|
|
|
|
#include <cstdint>
|
|
#include <cstddef>
|
|
#include <memory>
|
|
|
|
class StreamInput {
|
|
public:
|
|
StreamInput(CaptureConfig* const config) :
|
|
config { config },
|
|
K { config->write_size_log2 + config->buffer_count_log2 },
|
|
event_bytes_mask { (1UL << config->write_size_log2) - 1 },
|
|
data { std::make_unique<uint8_t[]>(1UL << K) },
|
|
fifo { data.get(), K }
|
|
{
|
|
config->fifo = &fifo;
|
|
}
|
|
|
|
size_t write(const void* const data, const size_t length) {
|
|
const auto written = fifo.in(reinterpret_cast<const uint8_t*>(data), length);
|
|
|
|
const auto last_bytes_written = bytes_written;
|
|
bytes_written += written;
|
|
if( (bytes_written & event_bytes_mask) < (last_bytes_written & event_bytes_mask) ) {
|
|
creg::m4txevent::assert();
|
|
}
|
|
|
|
return written;
|
|
}
|
|
|
|
uint64_t written() const {
|
|
return bytes_written;
|
|
}
|
|
|
|
private:
|
|
CaptureConfig* const config;
|
|
const size_t K;
|
|
const uint64_t event_bytes_mask;
|
|
uint64_t bytes_written = 0;
|
|
std::unique_ptr<uint8_t[]> data;
|
|
FIFO<uint8_t> fifo;
|
|
};
|
|
|
|
#endif/*__STREAM_INPUT_H__*/
|