Introduce first cut of live shifter
This commit is contained in:
Chris Cannam
582
ladspa-lv2/RubberBandLivePitchShifter.cpp
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582
ladspa-lv2/RubberBandLivePitchShifter.cpp
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@@ -0,0 +1,582 @@
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/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */
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/*
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Rubber Band Library
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An audio time-stretching and pitch-shifting library.
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Copyright 2007-2023 Particular Programs Ltd.
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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 License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version. See the file
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COPYING included with this distribution for more information.
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Alternatively, if you have a valid commercial licence for the
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Rubber Band Library obtained by agreement with the copyright
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holders, you may redistribute and/or modify it under the terms
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described in that licence.
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If you wish to distribute code using the Rubber Band Library
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under terms other than those of the GNU General Public License,
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you must obtain a valid commercial licence before doing so.
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*/
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#include "RubberBandLivePitchShifter.h"
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#include "RubberBandLiveShifter.h"
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#include <iostream>
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#include <cmath>
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using namespace RubberBand;
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using std::cout;
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using std::cerr;
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using std::endl;
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using std::min;
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#ifdef RB_PLUGIN_LADSPA
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const char *const
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RubberBandLivePitchShifter::portNamesMono[PortCountMono] =
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{
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"latency",
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"Cents",
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"Semitones",
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"Octaves",
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"Formant Preserving",
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"Wet-Dry Mix",
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"Input",
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"Output"
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};
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const char *const
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RubberBandLivePitchShifter::portNamesStereo[PortCountStereo] =
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{
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"latency",
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"Cents",
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"Semitones",
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"Octaves",
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"Formant Preserving",
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"Wet-Dry Mix",
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"Input L",
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"Output L",
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"Input R",
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"Output R"
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};
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const LADSPA_PortDescriptor
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RubberBandLivePitchShifter::portsMono[PortCountMono] =
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{
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LADSPA_PORT_OUTPUT | LADSPA_PORT_CONTROL,
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LADSPA_PORT_INPUT | LADSPA_PORT_CONTROL,
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LADSPA_PORT_INPUT | LADSPA_PORT_CONTROL,
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LADSPA_PORT_INPUT | LADSPA_PORT_CONTROL,
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LADSPA_PORT_INPUT | LADSPA_PORT_CONTROL,
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LADSPA_PORT_INPUT | LADSPA_PORT_CONTROL,
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LADSPA_PORT_INPUT | LADSPA_PORT_AUDIO,
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LADSPA_PORT_OUTPUT | LADSPA_PORT_AUDIO
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};
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const LADSPA_PortDescriptor
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RubberBandLivePitchShifter::portsStereo[PortCountStereo] =
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{
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LADSPA_PORT_OUTPUT | LADSPA_PORT_CONTROL,
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LADSPA_PORT_INPUT | LADSPA_PORT_CONTROL,
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LADSPA_PORT_INPUT | LADSPA_PORT_CONTROL,
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LADSPA_PORT_INPUT | LADSPA_PORT_CONTROL,
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LADSPA_PORT_INPUT | LADSPA_PORT_CONTROL,
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LADSPA_PORT_INPUT | LADSPA_PORT_CONTROL,
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LADSPA_PORT_INPUT | LADSPA_PORT_AUDIO,
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LADSPA_PORT_OUTPUT | LADSPA_PORT_AUDIO,
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LADSPA_PORT_INPUT | LADSPA_PORT_AUDIO,
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LADSPA_PORT_OUTPUT | LADSPA_PORT_AUDIO
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};
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const LADSPA_PortRangeHint
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RubberBandLivePitchShifter::hintsMono[PortCountMono] =
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{
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{ 0, 0, 0 }, // latency
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{ LADSPA_HINT_DEFAULT_0 | // cents
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LADSPA_HINT_BOUNDED_BELOW |
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LADSPA_HINT_BOUNDED_ABOVE,
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-100.0, 100.0 },
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{ LADSPA_HINT_DEFAULT_0 | // semitones
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LADSPA_HINT_BOUNDED_BELOW |
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LADSPA_HINT_BOUNDED_ABOVE |
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LADSPA_HINT_INTEGER,
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-12.0, 12.0 },
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{ LADSPA_HINT_DEFAULT_0 | // octaves
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LADSPA_HINT_BOUNDED_BELOW |
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LADSPA_HINT_BOUNDED_ABOVE |
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LADSPA_HINT_INTEGER,
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-2.0, 2.0 },
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{ LADSPA_HINT_DEFAULT_0 | // formant preserving
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LADSPA_HINT_BOUNDED_BELOW |
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LADSPA_HINT_BOUNDED_ABOVE |
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LADSPA_HINT_TOGGLED,
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0.0, 1.0 },
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{ LADSPA_HINT_DEFAULT_0 | // wet-dry mix
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LADSPA_HINT_BOUNDED_BELOW |
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LADSPA_HINT_BOUNDED_ABOVE,
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0.0, 1.0 },
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{ 0, 0, 0 },
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{ 0, 0, 0 }
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};
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const LADSPA_PortRangeHint
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RubberBandLivePitchShifter::hintsStereo[PortCountStereo] =
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{
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{ 0, 0, 0 }, // latency
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{ LADSPA_HINT_DEFAULT_0 | // cents
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LADSPA_HINT_BOUNDED_BELOW |
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LADSPA_HINT_BOUNDED_ABOVE,
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-100.0, 100.0 },
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{ LADSPA_HINT_DEFAULT_0 | // semitones
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LADSPA_HINT_BOUNDED_BELOW |
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LADSPA_HINT_BOUNDED_ABOVE |
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LADSPA_HINT_INTEGER,
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-12.0, 12.0 },
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{ LADSPA_HINT_DEFAULT_0 | // octaves
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LADSPA_HINT_BOUNDED_BELOW |
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LADSPA_HINT_BOUNDED_ABOVE |
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LADSPA_HINT_INTEGER,
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-2.0, 2.0 },
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{ LADSPA_HINT_DEFAULT_0 | // formant preserving
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LADSPA_HINT_BOUNDED_BELOW |
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LADSPA_HINT_BOUNDED_ABOVE |
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LADSPA_HINT_TOGGLED,
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0.0, 1.0 },
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{ LADSPA_HINT_DEFAULT_0 | // wet-dry mix
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LADSPA_HINT_BOUNDED_BELOW |
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LADSPA_HINT_BOUNDED_ABOVE,
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0.0, 1.0 },
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{ 0, 0, 0 },
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{ 0, 0, 0 },
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{ 0, 0, 0 },
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{ 0, 0, 0 }
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};
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const LADSPA_Properties
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RubberBandLivePitchShifter::properties = LADSPA_PROPERTY_HARD_RT_CAPABLE;
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const LADSPA_Descriptor
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RubberBandLivePitchShifter::ladspaDescriptorMono =
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{
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29791, // "Unique" ID
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"rubberband-live-pitchshifter-mono", // Label
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properties,
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"Rubber Band Live Mono Pitch Shifter", // Name
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"Breakfast Quay",
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"GPL",
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PortCountMono,
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portsMono,
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portNamesMono,
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hintsMono,
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nullptr, // Implementation data
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instantiate,
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connectPort,
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activate,
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run,
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nullptr, // Run adding
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nullptr, // Set run adding gain
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deactivate,
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cleanup
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};
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const LADSPA_Descriptor
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RubberBandLivePitchShifter::ladspaDescriptorStereo =
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{
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97921, // "Unique" ID
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"rubberband-live-pitchshifter-stereo", // Label
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properties,
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"Rubber Band Live Stereo Pitch Shifter", // Name
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"Breakfast Quay",
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"GPL",
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PortCountStereo,
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portsStereo,
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portNamesStereo,
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hintsStereo,
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nullptr, // Implementation data
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instantiate,
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connectPort,
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activate,
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run,
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nullptr, // Run adding
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nullptr, // Set run adding gain
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deactivate,
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cleanup
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};
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const LADSPA_Descriptor *
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RubberBandLivePitchShifter::getDescriptor(unsigned long index)
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{
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if (index == 0) return &ladspaDescriptorMono;
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if (index == 1) return &ladspaDescriptorStereo;
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else return 0;
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}
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#else
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const LV2_Descriptor
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RubberBandLivePitchShifter::lv2DescriptorMono =
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{
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"http://breakfastquay.com/rdf/lv2-rubberband-live#mono",
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instantiate,
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connectPort,
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activate,
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run,
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deactivate,
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cleanup,
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nullptr
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};
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const LV2_Descriptor
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RubberBandLivePitchShifter::lv2DescriptorStereo =
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{
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"http://breakfastquay.com/rdf/lv2-rubberband-live#stereo",
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instantiate,
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connectPort,
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activate,
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run,
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deactivate,
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cleanup,
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nullptr
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};
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const LV2_Descriptor *
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RubberBandLivePitchShifter::getDescriptor(uint32_t index)
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{
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if (index == 0) return &lv2DescriptorMono;
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if (index == 1) return &lv2DescriptorStereo;
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else return 0;
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}
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#endif
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RubberBandLivePitchShifter::RubberBandLivePitchShifter(int sampleRate, size_t channels) :
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m_latency(nullptr),
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m_cents(nullptr),
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m_semitones(nullptr),
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m_octaves(nullptr),
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m_formant(nullptr),
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m_wetDry(nullptr),
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m_ratio(1.0),
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m_prevRatio(1.0),
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m_currentFormant(false),
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m_shifter(new RubberBandLiveShifter
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(sampleRate, channels,
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RubberBandLiveShifter::OptionWindowLong |
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RubberBandLiveShifter::OptionPitchModeB |
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RubberBandLiveShifter::OptionChannelsTogether)),
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m_sampleRate(sampleRate),
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m_channels(channels),
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m_blockSize(0),
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m_bufferSize(65536),
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m_delay(0)
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{
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m_input = new float *[m_channels];
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m_output = new float *[m_channels];
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m_irb = new RingBuffer<float> *[m_channels];
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m_orb = new RingBuffer<float> *[m_channels];
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m_ib = new float *[m_channels];
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m_ob = new float *[m_channels];
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m_delayMixBuffer = new RingBuffer<float> *[m_channels];
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m_blockSize = m_shifter->getBlockSize();
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m_delay = m_shifter->getStartDelay();
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for (int c = 0; c < m_channels; ++c) {
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m_irb[c] = new RingBuffer<float>(m_bufferSize);
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m_orb[c] = new RingBuffer<float>(m_bufferSize);
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m_irb[c]->zero(m_blockSize);
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m_ib[c] = new float[m_blockSize];
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m_ob[c] = new float[m_blockSize];
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m_delayMixBuffer[c] = new RingBuffer<float>(m_bufferSize + m_delay);
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m_irb[c]->zero(m_delay);
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}
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activateImpl();
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}
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RubberBandLivePitchShifter::~RubberBandLivePitchShifter()
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{
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delete m_shifter;
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for (int c = 0; c < m_channels; ++c) {
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delete m_irb[c];
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delete m_orb[c];
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delete[] m_ib[c];
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delete[] m_ob[c];
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delete m_delayMixBuffer[c];
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}
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delete[] m_irb;
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delete[] m_orb;
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delete[] m_ib;
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delete[] m_ob;
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delete[] m_delayMixBuffer;
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delete[] m_output;
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delete[] m_input;
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}
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#ifdef RB_PLUGIN_LADSPA
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LADSPA_Handle
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RubberBandLivePitchShifter::instantiate(const LADSPA_Descriptor *desc, unsigned long rate)
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{
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if (desc->PortCount == ladspaDescriptorMono.PortCount) {
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return new RubberBandLivePitchShifter(rate, 1);
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} else if (desc->PortCount == ladspaDescriptorStereo.PortCount) {
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return new RubberBandLivePitchShifter(rate, 2);
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}
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return nullptr;
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}
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#else
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LV2_Handle
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RubberBandLivePitchShifter::instantiate(const LV2_Descriptor *desc, double rate,
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const char *, const LV2_Feature *const *)
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{
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if (rate < 1.0) {
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std::cerr << "RubberBandLivePitchShifter::instantiate: invalid sample rate "
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<< rate << " provided" << std::endl;
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return nullptr;
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}
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size_t srate = size_t(round(rate));
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if (std::string(desc->URI) == lv2DescriptorMono.URI) {
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return new RubberBandLivePitchShifter(srate, 1);
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} else if (std::string(desc->URI) == lv2DescriptorStereo.URI) {
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return new RubberBandLivePitchShifter(srate, 2);
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} else {
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std::cerr << "RubberBandLivePitchShifter::instantiate: unrecognised URI "
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<< desc->URI << " requested" << std::endl;
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return nullptr;
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}
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}
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#endif
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#ifdef RB_PLUGIN_LADSPA
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void
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RubberBandLivePitchShifter::connectPort(LADSPA_Handle handle,
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unsigned long port, LADSPA_Data *location)
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#else
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void
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RubberBandLivePitchShifter::connectPort(LV2_Handle handle,
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uint32_t port, void *location)
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#endif
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{
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RubberBandLivePitchShifter *shifter = (RubberBandLivePitchShifter *)handle;
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float **ports[PortCountStereo] = {
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||||
&shifter->m_latency,
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&shifter->m_cents,
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||||
&shifter->m_semitones,
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&shifter->m_octaves,
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&shifter->m_formant,
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&shifter->m_wetDry,
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&shifter->m_input[0],
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&shifter->m_output[0],
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||||
&shifter->m_input[1],
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&shifter->m_output[1]
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};
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||||
if (shifter->m_channels == 1) {
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if (port >= PortCountMono) return;
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||||
} else {
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||||
if (port >= PortCountStereo) return;
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||||
}
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||||
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||||
*ports[port] = (float *)location;
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||||
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||||
if (shifter->m_latency) {
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||||
*(shifter->m_latency) = shifter->getLatency();
|
||||
}
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||||
}
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||||
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||||
#ifdef RB_PLUGIN_LADSPA
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||||
void
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||||
RubberBandLivePitchShifter::activate(LADSPA_Handle handle)
|
||||
#else
|
||||
void
|
||||
RubberBandLivePitchShifter::activate(LV2_Handle handle)
|
||||
#endif
|
||||
{
|
||||
RubberBandLivePitchShifter *shifter = (RubberBandLivePitchShifter *)handle;
|
||||
shifter->activateImpl();
|
||||
}
|
||||
|
||||
#ifdef RB_PLUGIN_LADSPA
|
||||
void
|
||||
RubberBandLivePitchShifter::run(LADSPA_Handle handle, unsigned long samples)
|
||||
#else
|
||||
void
|
||||
RubberBandLivePitchShifter::run(LV2_Handle handle, uint32_t samples)
|
||||
#endif
|
||||
{
|
||||
RubberBandLivePitchShifter *shifter = (RubberBandLivePitchShifter *)handle;
|
||||
shifter->runImpl(samples);
|
||||
}
|
||||
|
||||
#ifdef RB_PLUGIN_LADSPA
|
||||
void
|
||||
RubberBandLivePitchShifter::deactivate(LADSPA_Handle handle)
|
||||
#else
|
||||
void
|
||||
RubberBandLivePitchShifter::deactivate(LV2_Handle handle)
|
||||
#endif
|
||||
{
|
||||
activate(handle); // both functions just reset the plugin
|
||||
}
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||||
|
||||
#ifdef RB_PLUGIN_LADSPA
|
||||
void
|
||||
RubberBandLivePitchShifter::cleanup(LADSPA_Handle handle)
|
||||
#else
|
||||
void
|
||||
RubberBandLivePitchShifter::cleanup(LV2_Handle handle)
|
||||
#endif
|
||||
{
|
||||
delete (RubberBandLivePitchShifter *)handle;
|
||||
}
|
||||
|
||||
void
|
||||
RubberBandLivePitchShifter::activateImpl()
|
||||
{
|
||||
updateRatio();
|
||||
m_prevRatio = m_ratio;
|
||||
m_shifter->reset();
|
||||
m_shifter->setPitchScale(m_ratio);
|
||||
|
||||
for (int c = 0; c < m_channels; ++c) {
|
||||
m_irb[c]->reset();
|
||||
m_irb[c]->zero(m_blockSize);
|
||||
m_orb[c]->reset();
|
||||
m_delayMixBuffer[c]->reset();
|
||||
m_delayMixBuffer[c]->zero(m_delay);
|
||||
}
|
||||
}
|
||||
|
||||
void
|
||||
RubberBandLivePitchShifter::updateRatio()
|
||||
{
|
||||
// The octaves, semitones, and cents parameters are supposed to be
|
||||
// integral: we want to enforce that, just to avoid
|
||||
// inconsistencies between hosts if some respect the hints more
|
||||
// than others
|
||||
|
||||
#ifdef RB_PLUGIN_LADSPA
|
||||
|
||||
// But we don't want to change the long-standing behaviour of the
|
||||
// LADSPA plugin, so let's leave this as-is and only do "the right
|
||||
// thing" for LV2
|
||||
double oct = (m_octaves ? *m_octaves : 0.0);
|
||||
oct += (m_semitones ? *m_semitones : 0.0) / 12;
|
||||
oct += (m_cents ? *m_cents : 0.0) / 1200;
|
||||
m_ratio = pow(2.0, oct);
|
||||
|
||||
#else
|
||||
|
||||
// LV2
|
||||
|
||||
double octaves = round(m_octaves ? *m_octaves : 0.0);
|
||||
if (octaves < -2.0) octaves = -2.0;
|
||||
if (octaves > 2.0) octaves = 2.0;
|
||||
|
||||
double semitones = round(m_semitones ? *m_semitones : 0.0);
|
||||
if (semitones < -12.0) semitones = -12.0;
|
||||
if (semitones > 12.0) semitones = 12.0;
|
||||
|
||||
double cents = round(m_cents ? *m_cents : 0.0);
|
||||
if (cents < -100.0) cents = -100.0;
|
||||
if (cents > 100.0) cents = 100.0;
|
||||
|
||||
m_ratio = pow(2.0,
|
||||
octaves +
|
||||
semitones / 12.0 +
|
||||
cents / 1200.0);
|
||||
#endif
|
||||
}
|
||||
|
||||
void
|
||||
RubberBandLivePitchShifter::updateFormant()
|
||||
{
|
||||
if (!m_formant) return;
|
||||
|
||||
bool f = (*m_formant > 0.5f);
|
||||
if (f == m_currentFormant) return;
|
||||
|
||||
RubberBandLiveShifter *s = m_shifter;
|
||||
|
||||
s->setFormantOption(f ?
|
||||
RubberBandLiveShifter::OptionFormantPreserved :
|
||||
RubberBandLiveShifter::OptionFormantShifted);
|
||||
|
||||
m_currentFormant = f;
|
||||
}
|
||||
|
||||
int
|
||||
RubberBandLivePitchShifter::getLatency() const
|
||||
{
|
||||
return m_shifter->getStartDelay() + m_blockSize;
|
||||
}
|
||||
|
||||
void
|
||||
RubberBandLivePitchShifter::runImpl(uint32_t insamples)
|
||||
{
|
||||
updateRatio();
|
||||
if (m_ratio != m_prevRatio) {
|
||||
m_shifter->setPitchScale(m_ratio);
|
||||
m_prevRatio = m_ratio;
|
||||
}
|
||||
|
||||
updateFormant();
|
||||
|
||||
if (m_latency) {
|
||||
*m_latency = getLatency();
|
||||
}
|
||||
|
||||
for (int c = 0; c < m_channels; ++c) {
|
||||
m_irb[c]->write(m_input[c], insamples);
|
||||
m_delayMixBuffer[c]->write(m_input[c], insamples);
|
||||
}
|
||||
|
||||
while (m_irb[0]->getReadSpace() >= m_blockSize) {
|
||||
|
||||
for (int c = 0; c < m_channels; ++c) {
|
||||
m_irb[c]->read(m_ib[c], m_blockSize);
|
||||
}
|
||||
|
||||
m_shifter->shift(m_ib, m_ob);
|
||||
|
||||
for (int c = 0; c < m_channels; ++c) {
|
||||
m_orb[c]->write(m_ob[c], m_blockSize);
|
||||
}
|
||||
}
|
||||
|
||||
for (int c = 0; c < m_channels; ++c) {
|
||||
m_orb[c]->read(m_output[c], insamples);
|
||||
}
|
||||
|
||||
float mix = 0.0;
|
||||
if (m_wetDry) mix = *m_wetDry;
|
||||
|
||||
for (int c = 0; c < m_channels; ++c) {
|
||||
if (mix > 0.0) {
|
||||
for (uint32_t i = 0; i < insamples; ++i) {
|
||||
float dry = m_delayMixBuffer[c]->readOne();
|
||||
m_output[c][i] *= (1.0 - mix);
|
||||
m_output[c][i] += dry * mix;
|
||||
}
|
||||
} else {
|
||||
m_delayMixBuffer[c]->skip(insamples);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
Reference in New Issue
Block a user