Robin Davies
518 lines
17 KiB
C++
518 lines
17 KiB
C++
// Copyright (c) 2022 Robin Davies
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy of
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// this software and associated documentation files (the "Software"), to deal in
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// the Software without restriction, including without limitation the rights to
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// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
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// the Software, and to permit persons to whom the Software is furnished to do so,
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// subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in all
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// copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
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// FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
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// COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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// IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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// CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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#pragma once
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#include "IEffect.hpp"
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#include "PiPedalException.hpp"
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#include "PiPedalMath.hpp"
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#include <assert.h>
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#include <string>
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#include <unordered_map>
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namespace pipedal
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{
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enum class SplitType
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{
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Ab = 0,
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Mix = 1,
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Lr = 2
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};
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class Lv2PluginInfo;
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class Lv2PortInfo;
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std::shared_ptr<Lv2PluginInfo> GetSplitterPluginInfo();
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const Lv2PortInfo *GetBypassPortInfo();
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const double SPLIT_DB_MIN = -60;
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inline SplitType valueToSplitType(float value)
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{
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switch ((int)value)
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{
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case 0:
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return SplitType::Ab;
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case 1:
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return SplitType::Mix;
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case 2:
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return SplitType::Lr;
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default:
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return SplitType::Ab;
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}
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};
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class SplitEffect : public IEffect
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{
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private:
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virtual void SetAudioInputBuffer(int index, float *buffer)
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{
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assert(false); // not used.
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}
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virtual void Run(uint32_t samples, RealtimeRingBufferWriter *realtimeRingBufferWriter)
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{
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assert(false); // not used.
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}
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const double MIX_TRANSITION_TIME_S = 0.1;
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double sampleRate;
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std::unordered_map<std::string,int> controlIndex;
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std::vector<float *> inputs;
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std::vector<float *> topInputs;
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std::vector<float *> bottomInputs;
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std::vector<float *> topOutputs;
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std::vector<float *> bottomOutputs;
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std::vector<float *> mixTopInputs;
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std::vector<float *> mixBottomInputs;
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std::vector<float *> outputBuffers;
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int numberOfOutputPorts;
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SplitType splitType = SplitType::Ab;
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float mix = 0;
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float panL = 0;
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float volL = -3;
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float panR = 0;
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float volR = -3;
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float currentMix = 0;
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float targetBlendLTop = 0.5;
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float targetBlendRTop = 0.5;
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float targetBlendLBottom = 0.5;
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float targetBlendRBottom = 0.5;
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float blendLTop = 0.5;
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float blendRTop = 0.5;
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float blendLBottom = 0.5;
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float blendRBottom = 0.5;
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float blendDxLTop = 0;
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float blendDxRTop = 0;
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float blendDxLBottom = 0;
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float blendDxRBottom = 0;
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std::vector<float> defaultInputControlValues;
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int32_t blendFadeSamples;
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bool selectA = true;
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bool activated = false;
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using MixFunction = void (SplitEffect::*)(uint32_t frames);
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MixFunction preAbTop;
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MixFunction preAbBottom;
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void Copy(float *input, float *output, uint32_t frames)
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{
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for (int i = 0; i < frames; ++i)
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{
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output[i] = input[i];
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}
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}
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void abTopMonoMono(uint32_t frames)
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{
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Copy(this->inputs[0], this->topInputs[0], frames);
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}
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void abTopMonoStereo(uint32_t frames)
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{
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Copy(this->inputs[0], this->topInputs[0], frames);
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Copy(this->inputs[0], this->topInputs[1], frames);
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}
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void abTopStereoStereo(uint32_t frames)
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{
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Copy(this->inputs[0], this->topInputs[0], frames);
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Copy(this->inputs[1], this->topInputs[1], frames);
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}
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void abBottomMonoMono(uint32_t frames)
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{
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Copy(this->inputs[0], this->bottomInputs[0], frames);
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}
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void abBottomMonoStereo(uint32_t frames)
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{
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Copy(this->inputs[0], this->bottomInputs[0], frames);
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Copy(this->inputs[0], this->bottomInputs[1], frames);
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}
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void abBottomStereoStereo(uint32_t frames)
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{
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Copy(this->inputs[0], this->bottomInputs[0], frames);
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Copy(this->inputs[1], this->bottomInputs[1], frames);
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}
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void lrTopMonoMono(uint32_t frames)
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{
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Copy(this->inputs[0], this->topInputs[0], frames);
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}
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void lrTopMonoStereo(uint32_t frames)
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{
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Copy(this->inputs[0], this->topInputs[0], frames);
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Copy(this->inputs[0], this->topInputs[1], frames);
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}
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void lrTopStereoStereo(uint32_t frames)
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{
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Copy(this->inputs[0], this->topInputs[0], frames);
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Copy(this->inputs[0], this->topInputs[1], frames);
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}
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void lrBottomMonoMono(uint32_t frames)
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{
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Copy(this->inputs[0], this->bottomInputs[0], frames);
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}
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void lrBottomMonoStereo(uint32_t frames)
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{
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Copy(this->inputs[0], this->bottomInputs[0], frames);
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Copy(this->inputs[0], this->bottomInputs[1], frames);
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}
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void lrBottomStereoStereo(uint32_t frames)
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{
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Copy(this->inputs[1], this->bottomInputs[0], frames);
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Copy(this->inputs[1], this->bottomInputs[1], frames);
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}
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void updateMixFunction()
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{
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if (activated)
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{
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// Input Mix Functions.
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if (splitType != SplitType::Lr)
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{
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if (this->inputs.size() == 1)
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{
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if (this->topInputs.size() == 1)
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this->preAbTop = &SplitEffect::abTopMonoMono;
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else
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{
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this->preAbTop = &SplitEffect::abTopMonoStereo;
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}
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if (this->bottomInputs.size() == 1)
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{
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this->preAbBottom = &SplitEffect::abBottomMonoMono;
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}
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else
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{
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this->preAbBottom = &SplitEffect::abBottomMonoStereo;
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}
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}
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else
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{
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if (this->topInputs.size() == 1)
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{
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this->preAbTop == &SplitEffect::abTopMonoMono;
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}
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else
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{
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this->preAbTop = &SplitEffect::abTopStereoStereo;
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}
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if (this->bottomInputs.size() == 1)
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{
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this->preAbBottom == &SplitEffect::abBottomMonoMono;
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}
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else
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{
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this->preAbBottom = &SplitEffect::abBottomStereoStereo;
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}
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}
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}
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else
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{
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if (this->inputs.size() == 1)
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{
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if (this->topInputs.size() == 1)
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this->preAbTop = &SplitEffect::lrTopMonoMono;
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else
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{
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this->preAbTop = &SplitEffect::lrTopMonoStereo;
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}
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if (this->bottomInputs.size() == 1)
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{
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this->preAbBottom = &SplitEffect::lrBottomMonoMono;
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}
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else
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{
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this->preAbBottom = &SplitEffect::lrBottomMonoStereo;
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}
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}
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else
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{
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if (this->topInputs.size() == 1)
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{
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this->preAbTop == &SplitEffect::lrTopMonoMono;
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}
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else
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{
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this->preAbTop = &SplitEffect::lrTopStereoStereo;
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}
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if (this->bottomInputs.size() == 1)
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{
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this->preAbBottom == &SplitEffect::lrBottomMonoMono;
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}
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else
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{
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this->preAbBottom = &SplitEffect::lrBottomStereoStereo;
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}
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}
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}
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if (splitType == SplitType::Ab)
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{
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mixTo(selectA ? -1 : 1);
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}
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else if (splitType == SplitType::Mix)
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{
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mixTo(mix);
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}
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else
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{
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mixTo(panL, volL, panR, volR);
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}
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}
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}
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uint64_t instanceId;
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virtual bool IsLv2Effect() const override { return true; }
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virtual uint8_t *GetAtomInputBuffer() { return nullptr; }
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virtual uint8_t *GetAtomOutputBuffer() { return nullptr; }
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virtual void GatherPatchProperties(RealtimePatchPropertyRequest *pRequest) {}
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virtual std::string AtomToJson(uint8_t *pAtom) { return ""; }
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virtual std::string GetAtomObjectType(uint8_t*pData) { return "not implemented";}
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virtual bool GetLv2State(Lv2PluginState*state) override { return false; }
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virtual void SetLv2State(Lv2PluginState&state) override { }
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virtual bool HasErrorMessage() const { return false; }
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const char* TakeErrorMessage() { return ""; }
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virtual bool IsVst3() const { return false; }
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public:
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SplitEffect(
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uint64_t instanceId,
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double sampleRate,
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const std::vector<float *> &inputs);
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~SplitEffect()
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{
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}
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static constexpr int SPLIT_TYPE_CTL = 0;
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static constexpr int SELECT_CTL = 1;
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static constexpr int MIX_CTL = 2;
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static constexpr int PANL_CTL = 3;
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static constexpr int VOLL_CTL = 4;
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static constexpr int PANR_CTL = 5;
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static constexpr int VOLR_CTL = 6;
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static constexpr int MAX_INPUT_CONTROL =7;
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virtual uint64_t GetMaxInputControl() const override;
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virtual bool IsInputControl(uint64_t index) const override;
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virtual float GetDefaultInputControlValue(uint64_t index) const override;
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virtual uint64_t GetInstanceId() const
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{
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return instanceId;
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}
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void Activate();
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void Deactivate();
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void SetChainBuffers(
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const std::vector<float *> &topInputs,
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const std::vector<float *> &bottomInputs,
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const std::vector<float *> &topOutputs,
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const std::vector<float *> &bottomOutputs,
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bool forceStereoOutput);
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virtual void ResetAtomBuffers() {}
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virtual int GetControlIndex(const std::string &symbol) const;
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void snapToMixTarget();
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void mixToTarget();
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void mixTo(float value);
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void mixTo(float panL, float volL, float panR, float volR);
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virtual void SetBypass(bool enabled)
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{
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throw PiPedalArgumentException("Not implmented. Should not have been called.");
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}
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virtual float GetOutputControlValue(int index) const {
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return GetControlValue(index);
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}
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virtual float GetControlValue(int portIndex) const;
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virtual void SetControl(int index, float value) override;
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virtual void SetPatchProperty(LV2_URID uridUri, size_t size, LV2_Atom *value) override {}
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virtual void RequestPatchProperty(LV2_URID uridUri) {}
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virtual void RequestAllPathPatchProperties() {}
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virtual int GetNumberOfOutputAudioPorts() const
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{
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return numberOfOutputPorts;
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}
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virtual int GetNumberOfInputAudioPorts() const
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{
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return (int)this->inputs.size();
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}
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virtual float *GetAudioInputBuffer(int index) const
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{
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return inputs[index];
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}
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virtual float *GetAudioOutputBuffer(int index) const
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{
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return this->outputBuffers[index];
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}
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virtual void SetAudioOutputBuffer(int index, float *buffer)
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{
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outputBuffers[index] = buffer;
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}
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void PreMix(uint32_t frames)
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{
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(this->*preAbTop)(frames);
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(this->*preAbBottom)(frames);
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}
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void PostMixMono(uint32_t frames)
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{
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uint32_t ix = 0;
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float *top = this->mixTopInputs[0];
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float *bottom = this->mixBottomInputs[0];
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float *output = this->outputBuffers[0];
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while (frames)
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{
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if (this->blendFadeSamples != 0)
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{
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uint32_t framesThisTime = this->blendFadeSamples < frames ? this->blendFadeSamples : frames;
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for (uint32_t i = 0; i < framesThisTime; ++i)
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{
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output[ix] = blendLBottom * bottom[ix] + blendLTop * top[ix];
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++ix;
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this->blendLTop += this->blendDxLTop;
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this->blendLBottom += this->blendDxLBottom;
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}
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this->blendFadeSamples -= framesThisTime;
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frames -= framesThisTime;
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if (blendFadeSamples == 0)
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{
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this->blendLTop = this->targetBlendLTop;
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this->blendLBottom = this->targetBlendLBottom;
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this->blendDxLTop = this->blendDxLBottom = 0;
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}
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}
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else
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{
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float blendTop = this->blendLTop;
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float blendBottom = this->blendLBottom;
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while (frames--)
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{
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output[ix] = blendBottom * bottom[ix] + blendTop * top[ix];
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++ix;
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}
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return;
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}
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}
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}
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void PostMixStereo(uint32_t frames)
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{
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uint32_t ix = 0;
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float *top = this->mixTopInputs[0];
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float *bottom = this->mixBottomInputs[0];
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float *output = this->outputBuffers[0];
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float *topR = this->mixTopInputs[1];
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float *bottomR = this->mixBottomInputs[1];
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float *outputR = this->outputBuffers[1];
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while (frames != 0)
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{
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if (this->blendFadeSamples != 0)
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{
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uint32_t framesThisTime = this->blendFadeSamples < frames ? this->blendFadeSamples : frames;
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for (int i = 0; i < framesThisTime; ++i)
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{
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output[ix] = blendLBottom * bottom[ix] + blendLTop * top[ix];
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outputR[ix] = blendRBottom * bottomR[ix] + blendRTop * topR[ix];
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++ix;
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this->blendLTop += this->blendDxLTop;
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this->blendRTop += this->blendDxRTop;
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this->blendLBottom += this->blendDxLBottom;
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this->blendRBottom += this->blendDxRBottom;
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}
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blendFadeSamples -= framesThisTime;
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frames -= framesThisTime;
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if (blendFadeSamples == 0)
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{
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this->blendLTop = this->targetBlendLTop;
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this->blendRTop = this->targetBlendRTop;
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this->blendLBottom = this->targetBlendLBottom;
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this->blendRBottom = this->targetBlendRBottom;
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this->blendDxLTop = this->blendDxRTop = this->blendDxLBottom = this->blendDxRBottom = 0;
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}
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}
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else
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{
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float blendLTop = this->blendLTop;
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float blendRTop = this->blendRTop;
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float blendLBottom = this->blendLBottom;
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float blendRBottom = this->blendRBottom;
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for (int i = 0; i < frames; ++i)
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{
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output[ix] = blendLBottom * bottom[ix] + blendLTop * top[ix];
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outputR[ix] = blendRBottom * bottomR[ix] + blendRTop * topR[ix];
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++ix;
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}
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return;
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}
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}
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}
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void PostMix(uint32_t frames)
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{
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if (this->outputBuffers.size() == 1)
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{
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PostMixMono(frames);
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}
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else
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{
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PostMixStereo(frames);
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}
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}
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virtual bool GetRequestStateChangedNotification() const { return false; }
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virtual void SetRequestStateChangedNotification(bool value) {}
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};
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} // namespace
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