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https://github.com/portapack-mayhem/mayhem-firmware.git
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b82eff51dd
Instead of copying data into and out of FIFO, passing buffer pointers between cores that are sized to match preferred/ideal SD card write size.
54 lines
1.6 KiB
C++
54 lines
1.6 KiB
C++
/*
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* Copyright (C) 2016 Jared Boone, ShareBrained Technology, Inc.
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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 __STREAM_INPUT_H__
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#define __STREAM_INPUT_H__
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#include "message.hpp"
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#include "fifo.hpp"
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#include <cstdint>
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#include <cstddef>
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#include <array>
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#include <memory>
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class StreamInput {
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public:
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StreamInput(CaptureConfig* const config);
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size_t write(const void* const data, const size_t length);
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private:
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static constexpr size_t buffer_count_max_log2 = 3;
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static constexpr size_t buffer_count_max = 1U << buffer_count_max_log2;
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FIFO<StreamBuffer*> fifo_buffers_empty;
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FIFO<StreamBuffer*> fifo_buffers_full;
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std::array<StreamBuffer, buffer_count_max> buffers;
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std::array<StreamBuffer*, buffer_count_max> buffers_empty;
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std::array<StreamBuffer*, buffer_count_max> buffers_full;
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StreamBuffer* active_buffer { nullptr };
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CaptureConfig* const config { nullptr };
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std::unique_ptr<uint8_t[]> data;
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};
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#endif/*__STREAM_INPUT_H__*/
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