/*
* Klang – a node+text-based synthesizer library
*
* This file is part of the *wellen* library (https://github.com/dennisppaul/wellen).
* Copyright (c) 2022 Dennis P Paul.
*
* This library 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, version 3.
*
* This library 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. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* [ NODE_MIXER4 ]
* +---------------------+
* | |
* IN00--| SIGNAL_0 SIGNAL |--OUT00
* IN01--| SIGNAL_1 |
* IN02--| SIGNAL_2 |
* IN03--| SIGNAL_3 |
* | |
* +---------------------+
*/
// @TODO(implement `MIX` as INPUT)
#ifndef NodeMixer4_hpp
#define NodeMixer4_hpp
#include "KlangNode.hpp"
namespace klang {
class NodeMixer4 : public Node {
public:
static const CHANNEL_ID CH_IN_SIGNAL_0 = 0;
static const CHANNEL_ID CH_IN_SIGNAL_1 = 1;
static const CHANNEL_ID CH_IN_SIGNAL_2 = 2;
static const CHANNEL_ID CH_IN_SIGNAL_3 = 3;
static const CHANNEL_ID NUM_CH_IN = 4;
static const CHANNEL_ID NUM_CH_OUT = 1;
enum SIGNAL_CHANNEL { SIGNAL_0 = 0,
SIGNAL_1,
SIGNAL_2,
SIGNAL_3 };
bool connect(Connection* pConnection, CHANNEL_ID pInChannel) {
if (pInChannel == CH_IN_SIGNAL_0) {
mConnection_CH_IN_SIGNAL_0 = pConnection;
return true;
}
if (pInChannel == CH_IN_SIGNAL_1) {
mConnection_CH_IN_SIGNAL_1 = pConnection;
return true;
}
if (pInChannel == CH_IN_SIGNAL_2) {
mConnection_CH_IN_SIGNAL_2 = pConnection;
return true;
}
if (pInChannel == CH_IN_SIGNAL_3) {
mConnection_CH_IN_SIGNAL_3 = pConnection;
return true;
}
return false;
}
bool disconnect(CHANNEL_ID pInChannel) {
if (pInChannel == CH_IN_SIGNAL_0) {
mConnection_CH_IN_SIGNAL_0 = nullptr;
return true;
}
if (pInChannel == CH_IN_SIGNAL_1) {
mConnection_CH_IN_SIGNAL_1 = nullptr;
return true;
}
return false;
if (pInChannel == CH_IN_SIGNAL_2) {
mConnection_CH_IN_SIGNAL_2 = nullptr;
return true;
}
if (pInChannel == CH_IN_SIGNAL_3) {
mConnection_CH_IN_SIGNAL_3 = nullptr;
return true;
}
return false;
}
void update(CHANNEL_ID pChannel, float* pAudioBlock) {
const bool m_has_SIGNAL_0 = (mConnection_CH_IN_SIGNAL_0 != nullptr);
const bool m_has_SIGNAL_1 = (mConnection_CH_IN_SIGNAL_1 != nullptr);
const bool m_has_SIGNAL_2 = (mConnection_CH_IN_SIGNAL_2 != nullptr);
const bool m_has_SIGNAL_3 = (mConnection_CH_IN_SIGNAL_3 != nullptr);
const uint8_t mSignalInputCounter = m_has_SIGNAL_0 + m_has_SIGNAL_1 + m_has_SIGNAL_2 + m_has_SIGNAL_3;
if (is_not_updated() && pChannel == CH_OUT_SIGNAL && mSignalInputCounter > 0) {
AUDIO_BLOCK_ID mBlock_SIGNAL_0 = AudioBlockPool::NO_ID;
AUDIO_BLOCK_ID mBlock_SIGNAL_1 = AudioBlockPool::NO_ID;
AUDIO_BLOCK_ID mBlock_SIGNAL_2 = AudioBlockPool::NO_ID;
AUDIO_BLOCK_ID mBlock_SIGNAL_3 = AudioBlockPool::NO_ID;
float* mBlockData_SIGNAL_0 = nullptr;
float* mBlockData_SIGNAL_1 = nullptr;
float* mBlockData_SIGNAL_2 = nullptr;
float* mBlockData_SIGNAL_3 = nullptr;
if (m_has_SIGNAL_0) {
mBlock_SIGNAL_0 = AudioBlockPool::instance().request();
mBlockData_SIGNAL_0 = AudioBlockPool::instance().data(mBlock_SIGNAL_0);
mConnection_CH_IN_SIGNAL_0->update(mBlock_SIGNAL_0);
}
if (m_has_SIGNAL_1) {
mBlock_SIGNAL_1 = AudioBlockPool::instance().request();
mBlockData_SIGNAL_1 = AudioBlockPool::instance().data(mBlock_SIGNAL_1);
mConnection_CH_IN_SIGNAL_1->update(mBlock_SIGNAL_1);
}
if (m_has_SIGNAL_2) {
mBlock_SIGNAL_2 = AudioBlockPool::instance().request();
mBlockData_SIGNAL_2 = AudioBlockPool::instance().data(mBlock_SIGNAL_2);
mConnection_CH_IN_SIGNAL_2->update(mBlock_SIGNAL_2);
}
if (m_has_SIGNAL_3) {
mBlock_SIGNAL_3 = AudioBlockPool::instance().request();
mBlockData_SIGNAL_3 = AudioBlockPool::instance().data(mBlock_SIGNAL_3);
mConnection_CH_IN_SIGNAL_3->update(mBlock_SIGNAL_3);
}
// const float mInverseSigCounter = 1.0 / mSignalInputCounter;
for (uint16_t i = 0; i < KLANG_SAMPLES_PER_AUDIO_BLOCK; ++i) {
const float s0 = m_has_SIGNAL_0 ? (mBlockData_SIGNAL_0[i] * mMix[SIGNAL_CHANNEL::SIGNAL_0]) : 0.0;
const float s1 = m_has_SIGNAL_1 ? (mBlockData_SIGNAL_1[i] * mMix[SIGNAL_CHANNEL::SIGNAL_1]) : 0.0;
const float s2 = m_has_SIGNAL_2 ? (mBlockData_SIGNAL_2[i] * mMix[SIGNAL_CHANNEL::SIGNAL_2]) : 0.0;
const float s3 = m_has_SIGNAL_3 ? (mBlockData_SIGNAL_3[i] * mMix[SIGNAL_CHANNEL::SIGNAL_3]) : 0.0;
const float sum = s0 + s1 + s2 + s3;
pAudioBlock[i] = sum;
// pAudioBlock[i] = sum * mInverseSigCounter;
}
AudioBlockPool::instance().release(mBlock_SIGNAL_0);
AudioBlockPool::instance().release(mBlock_SIGNAL_1);
AudioBlockPool::instance().release(mBlock_SIGNAL_2);
AudioBlockPool::instance().release(mBlock_SIGNAL_3);
flag_updated();
} else {
memset(pAudioBlock, 0.0, KLANG_SAMPLES_PER_AUDIO_BLOCK * sizeof(float));
}
}
void set_mix(SIGNAL_CHANNEL pChannel, float pValue) {
mMix[pChannel] = pValue;
}
float get_mix(uint8_t pChannel) {
return mMix[pChannel];
}
void set_command(KLANG_CMD_TYPE pCommand, KLANG_CMD_TYPE* pPayLoad) {
switch (pCommand) {
case KLANG_SET_MIX_F32:
set_mix(static_cast<SIGNAL_CHANNEL>(pPayLoad[0]), KlangMath::FLOAT_32(pPayLoad, 1));
break;
}
}
private:
Connection* mConnection_CH_IN_SIGNAL_0 = nullptr;
Connection* mConnection_CH_IN_SIGNAL_1 = nullptr;
Connection* mConnection_CH_IN_SIGNAL_2 = nullptr;
Connection* mConnection_CH_IN_SIGNAL_3 = nullptr;
float mMix[4] = {1, 1, 1, 1};
};
} // namespace klang
#endif /* NodeMixer4_hpp */