portapack-mayhem/firmware/baseband/proc_tones.hpp

/*
 * Copyright (C) 2015 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.
 */

#ifndef __PROC_TONES_H__
#define __PROC_TONES_H__

#include "portapack_shared_memory.hpp"
#include "baseband_processor.hpp"
#include "baseband_thread.hpp"
#include "audio_output.hpp"

class TonesProcessor : public BasebandProcessor {
   public:
    void execute(const buffer_c8_t& buffer) override;
    void on_message(const Message* const p) override;

   private:
    bool configured = false;

    std::array<int16_t, 32> audio{};  // 2048/64
    const buffer_s16_t audio_buffer{
        (int16_t*)audio.data(),
        sizeof(audio) / sizeof(int16_t)};

    uint32_t tone_deltas[32];
    uint32_t tone_durations[32];

    bool audio_out{false};
    bool dual_tone{false};
    uint32_t fm_delta{0};
    uint32_t tone_a_phase{0}, tone_b_phase{0};
    uint32_t tone_a_delta{0}, tone_b_delta{0};
    uint8_t digit_pos{0};
    uint8_t digit{0};
    uint32_t silence_count{0}, sample_count{0};
    uint32_t message_length{0};
    uint32_t phase{0}, sphase{0};
    int32_t tone_sample{0}, delta{0};
    int8_t re{0}, im{0};
    uint8_t as{0}, ai{0};

    TXProgressMessage txprogress_message{};
    AudioOutput audio_output{};

    /* NB: Threads should be the last members in the class definition. */
    BasebandThread baseband_thread{1536000, this, baseband::Direction::Transmit};
};

#endif