mirror of
https://github.com/eried/portapack-mayhem.git
synced 2025-11-03 20:24:06 -05:00
77 lines
2 KiB
C++
77 lines
2 KiB
C++
/*
|
|
* Copyright (C) 2014 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 __AUDIO_OUTPUT_H__
|
|
#define __AUDIO_OUTPUT_H__
|
|
|
|
#include "dsp_types.hpp"
|
|
|
|
#include "dsp_iir.hpp"
|
|
#include "dsp_squelch.hpp"
|
|
|
|
#include "stream_input.hpp"
|
|
#include "block_decimator.hpp"
|
|
#include "audio_stats_collector.hpp"
|
|
|
|
#include <cstdint>
|
|
#include <memory>
|
|
|
|
class AudioOutput {
|
|
public:
|
|
void configure(const bool do_proc);
|
|
|
|
void configure(
|
|
const iir_biquad_config_t& hpf_config,
|
|
const iir_biquad_config_t& deemph_config = iir_config_passthrough,
|
|
const float squelch_threshold = 0.0f
|
|
);
|
|
|
|
void write(const buffer_s16_t& audio);
|
|
void write(const buffer_f32_t& audio);
|
|
|
|
void set_stream(std::unique_ptr<StreamInput> new_stream) {
|
|
stream = std::move(new_stream);
|
|
}
|
|
|
|
private:
|
|
static constexpr float k = 32768.0f;
|
|
static constexpr float ki = 1.0f / k;
|
|
|
|
BlockDecimator<float, 32> block_buffer { 1 };
|
|
|
|
IIRBiquadFilter hpf { };
|
|
IIRBiquadFilter deemph { };
|
|
FMSquelch squelch { };
|
|
|
|
std::unique_ptr<StreamInput> stream { };
|
|
|
|
AudioStatsCollector audio_stats { };
|
|
|
|
uint64_t audio_present_history = 0;
|
|
|
|
bool do_processing = true;
|
|
|
|
void on_block(const buffer_f32_t& audio);
|
|
void fill_audio_buffer(const buffer_f32_t& audio, const bool send_to_fifo);
|
|
void feed_audio_stats(const buffer_f32_t& audio);
|
|
};
|
|
|
|
#endif/*__AUDIO_OUTPUT_H__*/
|