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bfa04c987d
* Centralize standard LMMS plugin logo Previously, every single plugin would have its own copy of this image. Now, these plugins pull it from the theme. I'm not sure it's valuable for this to be themeable, but AFAIK it's the place all the other non-plugin resources are stored, so that's where it goes for now.
156 lines
4.0 KiB
C++
156 lines
4.0 KiB
C++
/*
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* ReverbSC.cpp - A native reverb based on an algorithm by Sean Costello
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*
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* This file is part of LMMS - https://lmms.io
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) 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 GNU
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* 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
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* License along with this program (see COPYING); if not, write to the
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* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301 USA.
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*
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*/
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#include "ReverbSC.h"
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#include "embed.h"
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#include "lmms_math.h"
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#include "plugin_export.h"
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namespace lmms
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{
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extern "C"
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{
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Plugin::Descriptor PLUGIN_EXPORT reverbsc_plugin_descriptor =
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{
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LMMS_STRINGIFY( PLUGIN_NAME ),
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"ReverbSC",
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QT_TRANSLATE_NOOP( "PluginBrowser", "Reverb algorithm by Sean Costello" ),
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"Paul Batchelor",
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0x0123,
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Plugin::Type::Effect,
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new PixmapLoader("lmms-plugin-logo"),
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nullptr,
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nullptr,
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} ;
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}
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ReverbSCEffect::ReverbSCEffect( Model* parent, const Descriptor::SubPluginFeatures::Key* key ) :
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Effect( &reverbsc_plugin_descriptor, parent, key ),
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m_reverbSCControls( this )
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{
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sp_create(&sp);
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sp->sr = Engine::audioEngine()->outputSampleRate();
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sp_revsc_create(&revsc);
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sp_revsc_init(sp, revsc);
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sp_dcblock_create(&dcblk[0]);
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sp_dcblock_create(&dcblk[1]);
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sp_dcblock_init(sp, dcblk[0], 1);
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sp_dcblock_init(sp, dcblk[1], 1);
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}
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ReverbSCEffect::~ReverbSCEffect()
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{
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sp_revsc_destroy(&revsc);
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sp_dcblock_destroy(&dcblk[0]);
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sp_dcblock_destroy(&dcblk[1]);
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sp_destroy(&sp);
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}
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Effect::ProcessStatus ReverbSCEffect::processImpl(SampleFrame* buf, const fpp_t frames)
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{
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const float d = dryLevel();
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const float w = wetLevel();
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SPFLOAT tmpL, tmpR;
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SPFLOAT dcblkL, dcblkR;
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ValueBuffer * inGainBuf = m_reverbSCControls.m_inputGainModel.valueBuffer();
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ValueBuffer * sizeBuf = m_reverbSCControls.m_sizeModel.valueBuffer();
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ValueBuffer * colorBuf = m_reverbSCControls.m_colorModel.valueBuffer();
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ValueBuffer * outGainBuf = m_reverbSCControls.m_outputGainModel.valueBuffer();
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for( fpp_t f = 0; f < frames; ++f )
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{
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auto s = std::array{buf[f][0], buf[f][1]};
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const auto inGain = static_cast<SPFLOAT>(fastPow10f(
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(inGainBuf ? inGainBuf->values()[f] : m_reverbSCControls.m_inputGainModel.value()) / 20.f));
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const auto outGain = static_cast<SPFLOAT>(fastPow10f(
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(outGainBuf ? outGainBuf->values()[f] : m_reverbSCControls.m_outputGainModel.value()) / 20.f));
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s[0] *= inGain;
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s[1] *= inGain;
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revsc->feedback = (SPFLOAT)(sizeBuf ?
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sizeBuf->values()[f]
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: m_reverbSCControls.m_sizeModel.value());
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revsc->lpfreq = (SPFLOAT)(colorBuf ?
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colorBuf->values()[f]
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: m_reverbSCControls.m_colorModel.value());
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sp_revsc_compute(sp, revsc, &s[0], &s[1], &tmpL, &tmpR);
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sp_dcblock_compute(sp, dcblk[0], &tmpL, &dcblkL);
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sp_dcblock_compute(sp, dcblk[1], &tmpR, &dcblkR);
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buf[f][0] = d * buf[f][0] + w * dcblkL * outGain;
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buf[f][1] = d * buf[f][1] + w * dcblkR * outGain;
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}
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return ProcessStatus::ContinueIfNotQuiet;
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}
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void ReverbSCEffect::changeSampleRate()
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{
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// Change sr variable in Soundpipe. does not need to be destroyed
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sp->sr = Engine::audioEngine()->outputSampleRate();
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mutex.lock();
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sp_revsc_destroy(&revsc);
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sp_dcblock_destroy(&dcblk[0]);
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sp_dcblock_destroy(&dcblk[1]);
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sp_revsc_create(&revsc);
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sp_revsc_init(sp, revsc);
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sp_dcblock_create(&dcblk[0]);
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sp_dcblock_create(&dcblk[1]);
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sp_dcblock_init(sp, dcblk[0], 1);
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sp_dcblock_init(sp, dcblk[1], 1);
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mutex.unlock();
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}
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extern "C"
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{
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// necessary for getting instance out of shared lib
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PLUGIN_EXPORT Plugin * lmms_plugin_main( Model* parent, void* data )
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{
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return new ReverbSCEffect(
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parent,
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static_cast<const Plugin::Descriptor::SubPluginFeatures::Key*>(data)
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);
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}
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}
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} // namespace lmms
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