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audacia/src/effects/ChangePitch.cpp

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/**********************************************************************
Audacity: A Digital Audio Editor
Audacity(R) is copyright (c) 1999-2013 Audacity Team.
License: GPL v2. See License.txt.
ChangePitch.cpp
Vaughan Johnson, Dominic Mazzoni, Steve Daulton
******************************************************************//**
\file ChangePitch.cpp
\brief Change Pitch effect provides raising or lowering
the pitch without changing the tempo.
*//*******************************************************************/
#if USE_SOUNDTOUCH
#include "ChangePitch.h"
#include "LoadEffects.h"
#if USE_SBSMS
#include <wx/valgen.h>
#endif
#include <float.h>
#include <math.h>
#include <wx/checkbox.h>
#include <wx/choice.h>
#include <wx/intl.h>
#include <wx/slider.h>
#include <wx/spinctrl.h>
#include <wx/valtext.h>
#include "../PitchName.h"
#include "../Shuttle.h"
#include "../ShuttleGui.h"
#include "../Spectrum.h"
#include "../WaveTrack.h"
#include "../widgets/valnum.h"
#include "TimeWarper.h"
// Soundtouch defines these as well, which are also in generated configmac.h
// and configunix.h, so get rid of them before including,
// to avoid compiler warnings, and be sure to do this
// after all other #includes, to avoid any mischief that might result
// from doing the un-definitions before seeing any wx headers.
#undef PACKAGE_NAME
#undef PACKAGE_STRING
#undef PACKAGE_TARNAME
#undef PACKAGE_VERSION
#undef PACKAGE_BUGREPORT
#undef PACKAGE
#undef VERSION
#include "SoundTouch.h"
enum {
ID_PercentChange = 10000,
ID_FromPitch,
ID_FromOctave,
ID_ToPitch,
ID_ToOctave,
ID_SemitonesChange,
ID_FromFrequency,
ID_ToFrequency
};
// Soundtouch is not reasonable below -99% or above 3000%.
// Define keys, defaults, minimums, and maximums for the effect parameters
//
// Name Type Key Def Min Max Scale
Param( Percentage, double, wxT("Percentage"), 0.0, -99.0, 3000.0, 1 );
Param( UseSBSMS, bool, wxT("SBSMS"), false, false, true, 1 );
// We warp the slider to go up to 400%, but user can enter up to 3000%
static const double kSliderMax = 100.0; // warped above zero to actually go up to 400%
static const double kSliderWarp = 1.30105; // warp power takes max from 100 to 400.
// EffectChangePitch
const ComponentInterfaceSymbol EffectChangePitch::Symbol
{ XO("Change Pitch") };
namespace{ BuiltinEffectsModule::Registration< EffectChangePitch > reg; }
BEGIN_EVENT_TABLE(EffectChangePitch, wxEvtHandler)
EVT_CHOICE(ID_FromPitch, EffectChangePitch::OnChoice_FromPitch)
EVT_TEXT(ID_FromOctave, EffectChangePitch::OnSpin_FromOctave)
EVT_CHOICE(ID_ToPitch, EffectChangePitch::OnChoice_ToPitch)
EVT_TEXT(ID_ToOctave, EffectChangePitch::OnSpin_ToOctave)
EVT_TEXT(ID_SemitonesChange, EffectChangePitch::OnText_SemitonesChange)
EVT_TEXT(ID_FromFrequency, EffectChangePitch::OnText_FromFrequency)
EVT_TEXT(ID_ToFrequency, EffectChangePitch::OnText_ToFrequency)
EVT_TEXT(ID_PercentChange, EffectChangePitch::OnText_PercentChange)
EVT_SLIDER(ID_PercentChange, EffectChangePitch::OnSlider_PercentChange)
END_EVENT_TABLE()
EffectChangePitch::EffectChangePitch()
{
m_dPercentChange = DEF_Percentage;
m_dSemitonesChange = 0.0;
m_dStartFrequency = 0.0; // 0.0 => uninitialized
m_bLoopDetect = false;
#if USE_SBSMS
mUseSBSMS = DEF_UseSBSMS;
#else
mUseSBSMS = false;
#endif
// NULL out these control members because there are some cases where the
// event table handlers get called during this method, and those handlers that
// can cause trouble check for NULL.
m_pChoice_FromPitch = NULL;
m_pSpin_FromOctave = NULL;
m_pChoice_ToPitch = NULL;
m_pSpin_ToOctave = NULL;
m_pTextCtrl_SemitonesChange = NULL;
m_pTextCtrl_FromFrequency = NULL;
m_pTextCtrl_ToFrequency = NULL;
m_pTextCtrl_PercentChange = NULL;
m_pSlider_PercentChange = NULL;
SetLinearEffectFlag(true);
}
EffectChangePitch::~EffectChangePitch()
{
}
// ComponentInterface implementation
ComponentInterfaceSymbol EffectChangePitch::GetSymbol()
{
return Symbol;
}
TranslatableString EffectChangePitch::GetDescription()
{
return XO("Changes the pitch of a track without changing its tempo");
}
ManualPageID EffectChangePitch::ManualPage()
{
return L"Change_Pitch";
}
// EffectDefinitionInterface implementation
EffectType EffectChangePitch::GetType()
{
return EffectTypeProcess;
}
// EffectClientInterface implementation
bool EffectChangePitch::DefineParams( ShuttleParams & S ){
S.SHUTTLE_PARAM( m_dPercentChange, Percentage );
S.SHUTTLE_PARAM( mUseSBSMS, UseSBSMS );
return true;
}
bool EffectChangePitch::GetAutomationParameters(CommandParameters & parms)
{
parms.Write(KEY_Percentage, m_dPercentChange);
parms.Write(KEY_UseSBSMS, mUseSBSMS);
return true;
}
bool EffectChangePitch::SetAutomationParameters(CommandParameters & parms)
{
// Vaughan, 2013-06: Long lost to history, I don't see why m_dPercentChange was chosen to be shuttled.
// Only m_dSemitonesChange is used in Process().
ReadAndVerifyDouble(Percentage);
m_dPercentChange = Percentage;
Calc_SemitonesChange_fromPercentChange();
#if USE_SBSMS
ReadAndVerifyBool(UseSBSMS);
mUseSBSMS = UseSBSMS;
#else
mUseSBSMS = false;
#endif
return true;
}
bool EffectChangePitch::LoadFactoryDefaults()
{
DeduceFrequencies();
return Effect::LoadFactoryDefaults();
}
// Effect implementation
bool EffectChangePitch::Init()
{
return true;
}
bool EffectChangePitch::Process()
{
#if USE_SBSMS
if (mUseSBSMS)
{
double pitchRatio = 1.0 + m_dPercentChange / 100.0;
EffectSBSMS proxy;
proxy.mProxyEffectName = XO("High Quality Pitch Change");
proxy.setParameters(1.0, pitchRatio);
return Delegate(proxy, *mUIParent, nullptr);
}
else
#endif
{
// Macros save m_dPercentChange and not m_dSemitonesChange, so we must
// ensure that m_dSemitonesChange is set.
Calc_SemitonesChange_fromPercentChange();
auto initer = [&](soundtouch::SoundTouch *soundtouch)
{
soundtouch->setPitchSemiTones((float)(m_dSemitonesChange));
};
IdentityTimeWarper warper;
#ifdef USE_MIDI
// Pitch shifting note tracks is currently only supported by SoundTouchEffect
// and non-real-time-preview effects require an audio track selection.
//
// Note: m_dSemitonesChange is private to ChangePitch because it only
// needs to pass it along to mSoundTouch (above). I added mSemitones
// to SoundTouchEffect (the super class) to convey this value
// to process Note tracks. This approach minimizes changes to existing
// code, but it would be cleaner to change all m_dSemitonesChange to
// mSemitones, make mSemitones exist with or without USE_MIDI, and
// eliminate the next line:
mSemitones = m_dSemitonesChange;
#endif
return EffectSoundTouch::ProcessWithTimeWarper(initer, warper, true);
}
}
bool EffectChangePitch::CheckWhetherSkipEffect()
{
return (m_dPercentChange == 0.0);
}
void EffectChangePitch::PopulateOrExchange(ShuttleGui & S)
{
DeduceFrequencies(); // Set frequency-related control values based on sample.
TranslatableStrings pitch;
for (int ii = 0; ii < 12; ++ii)
pitch.push_back( PitchName( ii, PitchNameChoice::Both ) );
S.SetBorder(5);
S.StartVerticalLay(0);
{
S.StartVerticalLay();
{
S.AddTitle(XO("Change Pitch without Changing Tempo"));
S.AddTitle(
XO("Estimated Start Pitch: %s%d (%.3f Hz)")
.Format( pitch[m_nFromPitch], m_nFromOctave, m_FromFrequency) );
}
S.EndVerticalLay();
/* i18n-hint: (noun) Musical pitch.*/
S.StartStatic(XO("Pitch"));
{
S.StartMultiColumn(6, wxALIGN_CENTER); // 6 controls, because each AddChoice adds a wxStaticText and a wxChoice.
{
m_pChoice_FromPitch = S.Id(ID_FromPitch)
/* i18n-hint: changing musical pitch "from" one value "to" another */
.Name(XC("from", "change pitch"))
.MinSize( { 80, -1 } )
/* i18n-hint: changing musical pitch "from" one value "to" another */
.AddChoice(XXC("&from", "change pitch"), pitch);
m_pSpin_FromOctave = S.Id(ID_FromOctave)
.Name(XO("from Octave"))
.MinSize( { 50, -1 } )
.AddSpinCtrl( {}, m_nFromOctave, INT_MAX, INT_MIN);
m_pChoice_ToPitch = S.Id(ID_ToPitch)
/* i18n-hint: changing musical pitch "from" one value "to" another */
.Name(XC("to", "change pitch"))
.MinSize( { 80, -1 } )
/* i18n-hint: changing musical pitch "from" one value "to" another */
.AddChoice(XXC("&to", "change pitch"), pitch);
m_pSpin_ToOctave = S.Id(ID_ToOctave)
.Name(XO("to Octave"))
.MinSize( { 50, -1 } )
.AddSpinCtrl( {}, m_nToOctave, INT_MAX, INT_MIN);
}
S.EndMultiColumn();
S.StartHorizontalLay(wxALIGN_CENTER);
{
m_pTextCtrl_SemitonesChange = S.Id(ID_SemitonesChange)
.Name(XO("Semitones (half-steps)"))
.Validator<FloatingPointValidator<double>>(
2, &m_dSemitonesChange,
NumValidatorStyle::TWO_TRAILING_ZEROES
)
.AddTextBox(XXO("&Semitones (half-steps):"), wxT(""), 12);
}
S.EndHorizontalLay();
}
S.EndStatic();
S.StartStatic(XO("Frequency"));
{
S.StartMultiColumn(5, wxALIGN_CENTER); // 5, because AddTextBox adds a wxStaticText and a wxTextCtrl.
{
m_pTextCtrl_FromFrequency = S.Id(ID_FromFrequency)
.Name(XO("from (Hz)"))
.Validator<FloatingPointValidator<double>>(
3, &m_FromFrequency,
NumValidatorStyle::THREE_TRAILING_ZEROES,
0.0
)
.AddTextBox(XXO("f&rom"), wxT(""), 12);
m_pTextCtrl_ToFrequency = S.Id(ID_ToFrequency)
.Name(XO("to (Hz)"))
.Validator<FloatingPointValidator<double>>(
3, &m_ToFrequency,
NumValidatorStyle::THREE_TRAILING_ZEROES,
0.0
)
.AddTextBox(XXO("t&o"), wxT(""), 12);
S.AddUnits(XO("Hz"));
}
S.EndMultiColumn();
S.StartHorizontalLay(wxALIGN_CENTER);
{
m_pTextCtrl_PercentChange = S.Id(ID_PercentChange)
.Validator<FloatingPointValidator<double>>(
3, &m_dPercentChange,
NumValidatorStyle::THREE_TRAILING_ZEROES,
MIN_Percentage, MAX_Percentage
)
.AddTextBox(XXO("Percent C&hange:"), wxT(""), 12);
}
S.EndHorizontalLay();
S.StartHorizontalLay(wxEXPAND);
{
m_pSlider_PercentChange = S.Id(ID_PercentChange)
.Name(XO("Percent Change"))
.Style(wxSL_HORIZONTAL)
.AddSlider( {}, 0, (int)kSliderMax, (int)MIN_Percentage);
}
S.EndHorizontalLay();
}
S.EndStatic();
#if USE_SBSMS
S.StartMultiColumn(2);
{
mUseSBSMSCheckBox = S.Validator<wxGenericValidator>(&mUseSBSMS)
.AddCheckBox(XXO("&Use high quality stretching (slow)"),
mUseSBSMS);
}
S.EndMultiColumn();
#endif
}
S.EndVerticalLay();
return;
}
bool EffectChangePitch::TransferDataToWindow()
{
m_bLoopDetect = true;
if (!mUIParent->TransferDataToWindow())
{
return false;
}
Calc_SemitonesChange_fromPercentChange();
Calc_ToPitch(); // Call *after* m_dSemitonesChange is updated.
Calc_ToFrequency();
Calc_ToOctave(); // Call after Calc_ToFrequency().
Update_Choice_FromPitch();
Update_Choice_ToPitch();
Update_Spin_FromOctave();
Update_Spin_ToOctave();
Update_Text_SemitonesChange();
Update_Text_FromFrequency();
Update_Text_ToFrequency();
Update_Text_PercentChange();
Update_Slider_PercentChange();
m_bLoopDetect = false;
return true;
}
bool EffectChangePitch::TransferDataFromWindow()
{
if (!mUIParent->Validate() || !mUIParent->TransferDataFromWindow())
{
return false;
}
// from/to pitch controls
m_nFromPitch = m_pChoice_FromPitch->GetSelection();
m_nFromOctave = m_pSpin_FromOctave->GetValue();
m_nToPitch = m_pChoice_ToPitch->GetSelection();
// No need to update Slider_PercentChange here because TextCtrl_PercentChange
// always tracks it & is more precise (decimal points).
return true;
}
// EffectChangePitch implementation
// Deduce m_FromFrequency from the samples at the beginning of
// the selection. Then set some other params accordingly.
void EffectChangePitch::DeduceFrequencies()
{
auto FirstTrack = [&]()->const WaveTrack *{
if( IsBatchProcessing() || !inputTracks() )
return nullptr;
return *( inputTracks()->Selected< const WaveTrack >() ).first;
};
m_dStartFrequency = 261.265;// Middle C.
// As a neat trick, attempt to get the frequency of the note at the
// beginning of the selection.
auto track = FirstTrack();
if (track ) {
double rate = track->GetRate();
// Auto-size window -- high sample rates require larger windowSize.
// Aim for around 2048 samples at 44.1 kHz (good down to about 100 Hz).
// To detect single notes, analysis period should be about 0.2 seconds.
// windowSize must be a power of 2.
const size_t windowSize =
// windowSize < 256 too inaccurate
std::max(256, wxRound(pow(2.0, floor((log(rate / 20.0)/log(2.0)) + 0.5))));
// we want about 0.2 seconds to catch the first note.
// number of windows rounded to nearest integer >= 1.
const unsigned numWindows =
std::max(1, wxRound((double)(rate / (5.0f * windowSize))));
double trackStart = track->GetStartTime();
double t0 = mT0 < trackStart? trackStart: mT0;
auto start = track->TimeToLongSamples(t0);
auto analyzeSize = windowSize * numWindows;
Floats buffer{ analyzeSize };
Floats freq{ windowSize / 2 };
Floats freqa{ windowSize / 2, true };
track->GetFloats(buffer.get(), start, analyzeSize);
for(unsigned i = 0; i < numWindows; i++) {
ComputeSpectrum(buffer.get() + i * windowSize, windowSize,
windowSize, rate, freq.get(), true);
for(size_t j = 0; j < windowSize / 2; j++)
freqa[j] += freq[j];
}
size_t argmax = 0;
for(size_t j = 1; j < windowSize / 2; j++)
if (freqa[j] > freqa[argmax])
argmax = j;
auto lag = (windowSize / 2 - 1) - argmax;
m_dStartFrequency = rate / lag;
}
double dFromMIDInote = FreqToMIDInote(m_dStartFrequency);
double dToMIDInote = dFromMIDInote + m_dSemitonesChange;
m_nFromPitch = PitchIndex(dFromMIDInote);
m_nFromOctave = PitchOctave(dFromMIDInote);
m_nToPitch = PitchIndex(dToMIDInote);
m_nToOctave = PitchOctave(dToMIDInote);
m_FromFrequency = m_dStartFrequency;
// Calc_PercentChange(); // This will reset m_dPercentChange
Calc_ToFrequency();
}
// calculations
void EffectChangePitch::Calc_ToPitch()
{
int nSemitonesChange =
(int)(m_dSemitonesChange + ((m_dSemitonesChange < 0.0) ? -0.5 : 0.5));
m_nToPitch = (m_nFromPitch + nSemitonesChange) % 12;
if (m_nToPitch < 0)
m_nToPitch += 12;
}
void EffectChangePitch::Calc_ToOctave()
{
m_nToOctave = PitchOctave(FreqToMIDInote(m_ToFrequency));
}
void EffectChangePitch::Calc_SemitonesChange_fromPitches()
{
m_dSemitonesChange =
PitchToMIDInote(m_nToPitch, m_nToOctave) - PitchToMIDInote(m_nFromPitch, m_nFromOctave);
}
void EffectChangePitch::Calc_SemitonesChange_fromPercentChange()
{
// Use m_dPercentChange rather than m_FromFrequency & m_ToFrequency, because
// they start out uninitialized, but m_dPercentChange is always valid.
m_dSemitonesChange = (12.0 * log((100.0 + m_dPercentChange) / 100.0)) / log(2.0);
}
void EffectChangePitch::Calc_ToFrequency()
{
m_ToFrequency = (m_FromFrequency * (100.0 + m_dPercentChange)) / 100.0;
}
void EffectChangePitch::Calc_PercentChange()
{
m_dPercentChange = 100.0 * (pow(2.0, (m_dSemitonesChange / 12.0)) - 1.0);
}
// handlers
void EffectChangePitch::OnChoice_FromPitch(wxCommandEvent & WXUNUSED(evt))
{
if (m_bLoopDetect)
return;
m_nFromPitch = m_pChoice_FromPitch->GetSelection();
m_FromFrequency = PitchToFreq(m_nFromPitch, m_nFromOctave);
Calc_ToPitch();
Calc_ToFrequency();
Calc_ToOctave(); // Call after Calc_ToFrequency().
m_bLoopDetect = true;
{
Update_Choice_ToPitch();
Update_Spin_ToOctave();
Update_Text_FromFrequency();
Update_Text_ToFrequency();
}
m_bLoopDetect = false;
}
void EffectChangePitch::OnSpin_FromOctave(wxCommandEvent & WXUNUSED(evt))
{
if (m_bLoopDetect)
return;
m_nFromOctave = m_pSpin_FromOctave->GetValue();
//vvv If I change this code to not keep semitones and percent constant,
// will need validation code as in OnSpin_ToOctave.
m_FromFrequency = PitchToFreq(m_nFromPitch, m_nFromOctave);
Calc_ToFrequency();
Calc_ToOctave(); // Call after Calc_ToFrequency().
m_bLoopDetect = true;
{
Update_Spin_ToOctave();
Update_Text_FromFrequency();
Update_Text_ToFrequency();
}
m_bLoopDetect = false;
}
void EffectChangePitch::OnChoice_ToPitch(wxCommandEvent & WXUNUSED(evt))
{
if (m_bLoopDetect)
return;
m_nToPitch = m_pChoice_ToPitch->GetSelection();
Calc_SemitonesChange_fromPitches();
Calc_PercentChange(); // Call *after* m_dSemitonesChange is updated.
Calc_ToFrequency(); // Call *after* m_dPercentChange is updated.
m_bLoopDetect = true;
{
Update_Text_SemitonesChange();
Update_Text_ToFrequency();
Update_Text_PercentChange();
Update_Slider_PercentChange();
}
m_bLoopDetect = false;
}
void EffectChangePitch::OnSpin_ToOctave(wxCommandEvent & WXUNUSED(evt))
{
if (m_bLoopDetect)
return;
int nNewValue = m_pSpin_ToOctave->GetValue();
// Validation: Rather than set a range for octave numbers, enforce a range that
// keeps m_dPercentChange above -99%, per Soundtouch constraints.
if ((nNewValue + 3) < m_nFromOctave)
{
::wxBell();
m_pSpin_ToOctave->SetValue(m_nFromOctave - 3);
return;
}
m_nToOctave = nNewValue;
m_ToFrequency = PitchToFreq(m_nToPitch, m_nToOctave);
Calc_SemitonesChange_fromPitches();
Calc_PercentChange(); // Call *after* m_dSemitonesChange is updated.
m_bLoopDetect = true;
{
Update_Text_SemitonesChange();
Update_Text_ToFrequency();
Update_Text_PercentChange();
Update_Slider_PercentChange();
}
m_bLoopDetect = false;
}
void EffectChangePitch::OnText_SemitonesChange(wxCommandEvent & WXUNUSED(evt))
{
if (m_bLoopDetect)
return;
if (!m_pTextCtrl_SemitonesChange->GetValidator()->TransferFromWindow())
{
EnableApply(false);
return;
}
Calc_PercentChange();
Calc_ToFrequency(); // Call *after* m_dPercentChange is updated.
Calc_ToPitch();
Calc_ToOctave(); // Call after Calc_ToFrequency().
m_bLoopDetect = true;
{
Update_Choice_ToPitch();
Update_Spin_ToOctave();
Update_Text_ToFrequency();
Update_Text_PercentChange();
Update_Slider_PercentChange();
}
m_bLoopDetect = false;
// If m_dSemitonesChange is a big enough negative, we can go to or below 0 freq.
// If m_dSemitonesChange is a big enough positive, we can go to 1.#INF (Windows) or inf (Linux).
// But practically, these are best limits for Soundtouch.
bool bIsGoodValue = (m_dSemitonesChange > -80.0) && (m_dSemitonesChange <= 60.0);
EnableApply(bIsGoodValue);
}
void EffectChangePitch::OnText_FromFrequency(wxCommandEvent & WXUNUSED(evt))
{
if (m_bLoopDetect)
return;
// Empty string causes unpredictable results with ToDouble() and later calculations.
// Non-positive frequency makes no sense, but user might still be editing,
// so it's not an error, but we do not want to update the values/controls.
if (!m_pTextCtrl_FromFrequency->GetValidator()->TransferFromWindow())
{
EnableApply(false);
return;
}
double newFromMIDInote = FreqToMIDInote(m_FromFrequency);
m_nFromPitch = PitchIndex(newFromMIDInote);
m_nFromOctave = PitchOctave(newFromMIDInote);
Calc_ToPitch();
Calc_ToFrequency();
Calc_ToOctave(); // Call after Calc_ToFrequency().
m_bLoopDetect = true;
{
Update_Choice_FromPitch();
Update_Spin_FromOctave();
Update_Choice_ToPitch();
Update_Spin_ToOctave();
Update_Text_ToFrequency();
}
m_bLoopDetect = false;
// Success. Make sure OK and Preview are enabled, in case we disabled above during editing.
EnableApply(true);
}
void EffectChangePitch::OnText_ToFrequency(wxCommandEvent & WXUNUSED(evt))
{
if (m_bLoopDetect)
return;
// Empty string causes unpredictable results with ToDouble() and later calculations.
// Non-positive frequency makes no sense, but user might still be editing,
// so it's not an error, but we do not want to update the values/controls.
if (!m_pTextCtrl_ToFrequency->GetValidator()->TransferFromWindow())
{
EnableApply(false);
return;
}
m_dPercentChange = ((m_ToFrequency * 100.0) / m_FromFrequency) - 100.0;
Calc_ToOctave(); // Call after Calc_ToFrequency().
Calc_SemitonesChange_fromPercentChange();
Calc_ToPitch(); // Call *after* m_dSemitonesChange is updated.
m_bLoopDetect = true;
{
Update_Choice_ToPitch();
Update_Spin_ToOctave();
Update_Text_SemitonesChange();
Update_Text_PercentChange();
Update_Slider_PercentChange();
}
m_bLoopDetect = false;
// Success. Make sure OK and Preview are disabled if percent change is out of bounds.
// Can happen while editing.
// If the value is good, might also need to re-enable because of above clause.
bool bIsGoodValue = (m_dPercentChange > MIN_Percentage) && (m_dPercentChange <= MAX_Percentage);
EnableApply(bIsGoodValue);
}
void EffectChangePitch::OnText_PercentChange(wxCommandEvent & WXUNUSED(evt))
{
if (m_bLoopDetect)
return;
if (!m_pTextCtrl_PercentChange->GetValidator()->TransferFromWindow())
{
EnableApply(false);
return;
}
Calc_SemitonesChange_fromPercentChange();
Calc_ToPitch(); // Call *after* m_dSemitonesChange is updated.
Calc_ToFrequency();
Calc_ToOctave(); // Call after Calc_ToFrequency().
m_bLoopDetect = true;
{
Update_Choice_ToPitch();
Update_Spin_ToOctave();
Update_Text_SemitonesChange();
Update_Text_ToFrequency();
Update_Slider_PercentChange();
}
m_bLoopDetect = false;
// Success. Make sure OK and Preview are enabled, in case we disabled above during editing.
EnableApply(true);
}
void EffectChangePitch::OnSlider_PercentChange(wxCommandEvent & WXUNUSED(evt))
{
if (m_bLoopDetect)
return;
m_dPercentChange = (double)(m_pSlider_PercentChange->GetValue());
// Warp positive values to actually go up faster & further than negatives.
if (m_dPercentChange > 0.0)
m_dPercentChange = pow(m_dPercentChange, kSliderWarp);
Calc_SemitonesChange_fromPercentChange();
Calc_ToPitch(); // Call *after* m_dSemitonesChange is updated.
Calc_ToFrequency();
Calc_ToOctave(); // Call after Calc_ToFrequency().
m_bLoopDetect = true;
{
Update_Choice_ToPitch();
Update_Spin_ToOctave();
Update_Text_SemitonesChange();
Update_Text_ToFrequency();
Update_Text_PercentChange();
}
m_bLoopDetect = false;
}
// helper fns for controls
void EffectChangePitch::Update_Choice_FromPitch()
{
m_pChoice_FromPitch->SetSelection(m_nFromPitch);
}
void EffectChangePitch::Update_Spin_FromOctave()
{
m_pSpin_FromOctave->SetValue(m_nFromOctave);
}
void EffectChangePitch::Update_Choice_ToPitch()
{
m_pChoice_ToPitch->SetSelection(m_nToPitch);
}
void EffectChangePitch::Update_Spin_ToOctave()
{
m_pSpin_ToOctave->SetValue(m_nToOctave);
}
void EffectChangePitch::Update_Text_SemitonesChange()
{
m_pTextCtrl_SemitonesChange->GetValidator()->TransferToWindow();
}
void EffectChangePitch::Update_Text_FromFrequency()
{
m_pTextCtrl_FromFrequency->GetValidator()->TransferToWindow();
}
void EffectChangePitch::Update_Text_ToFrequency()
{
m_pTextCtrl_ToFrequency->GetValidator()->TransferToWindow();
}
void EffectChangePitch::Update_Text_PercentChange()
{
m_pTextCtrl_PercentChange->GetValidator()->TransferToWindow();
}
void EffectChangePitch::Update_Slider_PercentChange()
{
double unwarped = m_dPercentChange;
if (unwarped > 0.0)
// Un-warp values above zero to actually go up to kSliderMax.
unwarped = pow(m_dPercentChange, (1.0 / kSliderWarp));
// Add 0.5 to unwarped so trunc -> round.
m_pSlider_PercentChange->SetValue((int)(unwarped + 0.5));
}
#endif // USE_SOUNDTOUCH
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