mirror of
https://github.com/eried/portapack-mayhem.git
synced 2024-12-27 00:09:36 -05:00
82 lines
2.0 KiB
C++
82 lines
2.0 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.
|
|
*/
|
|
|
|
#include "proc_jammer.hpp"
|
|
#include "portapack_shared_memory.hpp"
|
|
#include "sine_table.hpp"
|
|
|
|
#include <cstdint>
|
|
|
|
#define POLY_MASK_32 0xB4BCD35C
|
|
|
|
void JammerProcessor::execute(const buffer_c8_t& buffer) {
|
|
for (size_t i = 0; i<buffer.count; i++) {
|
|
|
|
if (s >= 10000) { //shared_memory.jammer_ranges[ir].duration
|
|
s = 0;
|
|
for (;;) {
|
|
ir++;
|
|
if (ir > 15) ir = 0;
|
|
if (shared_memory.jammer_ranges[ir].active == true) break;
|
|
}
|
|
jammer_bw = shared_memory.jammer_ranges[ir].width / 2;
|
|
|
|
message.freq = shared_memory.jammer_ranges[ir].center;
|
|
shared_memory.application_queue.push(message);
|
|
} else {
|
|
s++;
|
|
}
|
|
|
|
// Ramp
|
|
/*if (r >= 10) {
|
|
if (sample < 128)
|
|
sample++;
|
|
else
|
|
sample = -127;
|
|
r = 0;
|
|
} else {
|
|
r++;
|
|
}*/
|
|
|
|
// Phase
|
|
if (r >= 70) {
|
|
aphase += ((aphase>>4) ^ 0x4573) << 14;
|
|
r = 0;
|
|
} else {
|
|
r++;
|
|
}
|
|
|
|
aphase += 8830;
|
|
sample = sine_table_f32[(aphase & 0x03FF0000)>>18]*256;
|
|
|
|
//FM
|
|
frq = sample * jammer_bw; // Bandwidth
|
|
|
|
phase = (phase + frq);
|
|
sphase = phase + (256<<16);
|
|
|
|
re = sine_table_f32[(sphase & 0x03FF0000)>>18]*127;
|
|
im = sine_table_f32[(phase & 0x03FF0000)>>18]*127;
|
|
|
|
buffer.p[i] = {(int8_t)re,(int8_t)im};
|
|
}
|
|
};
|