278 lines
6.6 KiB
C++
278 lines
6.6 KiB
C++
/**********************************************************************
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Audacity: A Digital Audio Editor
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FindClipping.cpp
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Leland Lucius
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*******************************************************************//**
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\class EffectFindClipping
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\brief Locates clipping and inserts labels when found
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*//****************************************************************//**
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\class FindClippingDialog
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\brief FindClippingDialog used with EffectFindClipping
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*//*******************************************************************/
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#include "FindClipping.h"
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#include "LoadEffects.h"
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#include <math.h>
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#include <wx/intl.h>
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#include "../Shuttle.h"
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#include "../ShuttleGui.h"
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#include "../widgets/valnum.h"
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#include "../widgets/AudacityMessageBox.h"
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#include "../LabelTrack.h"
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#include "../WaveTrack.h"
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// Define keys, defaults, minimums, and maximums for the effect parameters
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//
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// Name Type Key Def Min Max Scale
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Param( Start, int, wxT("Duty Cycle Start"), 3, 1, INT_MAX, 1 );
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Param( Stop, int, wxT("Duty Cycle End"), 3, 1, INT_MAX, 1 );
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const ComponentInterfaceSymbol EffectFindClipping::Symbol
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{ XO("Find Clipping") };
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namespace{ BuiltinEffectsModule::Registration< EffectFindClipping > reg; }
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EffectFindClipping::EffectFindClipping()
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{
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mStart = DEF_Start;
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mStop = DEF_Stop;
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}
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EffectFindClipping::~EffectFindClipping()
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{
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}
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// ComponentInterface implementation
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ComponentInterfaceSymbol EffectFindClipping::GetSymbol()
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{
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return Symbol;
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}
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TranslatableString EffectFindClipping::GetDescription()
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{
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return XO("Creates labels where clipping is detected");
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}
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ManualPageID EffectFindClipping::ManualPage()
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{
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return L"Find_Clipping";
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}
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// EffectDefinitionInterface implementation
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EffectType EffectFindClipping::GetType()
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{
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return EffectTypeAnalyze;
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}
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// EffectClientInterface implementation
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bool EffectFindClipping::DefineParams( ShuttleParams & S ){
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S.SHUTTLE_PARAM( mStart, Start );
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S.SHUTTLE_PARAM( mStop, Stop );
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return true;
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}
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bool EffectFindClipping::GetAutomationParameters(CommandParameters & parms)
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{
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parms.Write(KEY_Start, mStart);
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parms.Write(KEY_Stop, mStop);
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return true;
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}
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bool EffectFindClipping::SetAutomationParameters(CommandParameters & parms)
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{
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ReadAndVerifyInt(Start);
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ReadAndVerifyInt(Stop);
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mStart = Start;
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mStop = Stop;
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return true;
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}
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// Effect implementation
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bool EffectFindClipping::Process()
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{
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std::shared_ptr<AddedAnalysisTrack> addedTrack;
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Optional<ModifiedAnalysisTrack> modifiedTrack;
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const wxString name{ _("Clipping") };
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auto clt = *inputTracks()->Any< const LabelTrack >().find_if(
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[&]( const Track *track ){ return track->GetName() == name; } );
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LabelTrack *lt{};
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if (!clt)
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addedTrack = (AddAnalysisTrack(name)), lt = addedTrack->get();
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else
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modifiedTrack.emplace(ModifyAnalysisTrack(clt, name)),
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lt = modifiedTrack->get();
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int count = 0;
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// JC: Only process selected tracks.
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for (auto t : inputTracks()->Selected< const WaveTrack >()) {
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double trackStart = t->GetStartTime();
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double trackEnd = t->GetEndTime();
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double t0 = mT0 < trackStart ? trackStart : mT0;
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double t1 = mT1 > trackEnd ? trackEnd : mT1;
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if (t1 > t0) {
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auto start = t->TimeToLongSamples(t0);
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auto end = t->TimeToLongSamples(t1);
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auto len = end - start;
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if (!ProcessOne(lt, count, t, start, len)) {
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return false;
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}
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}
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count++;
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}
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// No cancellation, so commit the addition of the track.
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if (addedTrack)
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addedTrack->Commit();
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if (modifiedTrack)
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modifiedTrack->Commit();
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return true;
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}
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bool EffectFindClipping::ProcessOne(LabelTrack * lt,
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int count,
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const WaveTrack * wt,
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sampleCount start,
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sampleCount len)
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{
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bool bGoodResult = true;
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size_t blockSize = (mStart * 1000);
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if (len < mStart) {
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return true;
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}
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Floats buffer;
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try {
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// mStart should be positive.
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// if we are throwing bad_alloc and mStart is negative, find out why.
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if (mStart < 0 || (int)blockSize < mStart)
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// overflow
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throw std::bad_alloc{};
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buffer.reinit(blockSize);
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}
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catch( const std::bad_alloc & ) {
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Effect::MessageBox( XO("Requested value exceeds memory capacity.") );
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return false;
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}
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float *ptr = buffer.get();
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decltype(len) s = 0, startrun = 0, stoprun = 0, samps = 0;
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decltype(blockSize) block = 0;
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double startTime = -1.0;
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while (s < len) {
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if (block == 0) {
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if (TrackProgress(count,
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s.as_double() /
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len.as_double() )) {
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bGoodResult = false;
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break;
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}
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block = limitSampleBufferSize( blockSize, len - s );
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wt->GetFloats(buffer.get(), start + s, block);
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ptr = buffer.get();
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}
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float v = fabs(*ptr++);
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if (v >= MAX_AUDIO) {
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if (startrun == 0) {
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startTime = wt->LongSamplesToTime(start + s);
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samps = 0;
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}
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else {
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stoprun = 0;
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}
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startrun++;
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samps++;
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}
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else {
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if (startrun >= mStart) {
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stoprun++;
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samps++;
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if (stoprun >= mStop) {
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lt->AddLabel(SelectedRegion(startTime,
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wt->LongSamplesToTime(start + s - mStop)),
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wxString::Format(wxT("%lld of %lld"), startrun.as_long_long(), (samps - mStop).as_long_long()));
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startrun = 0;
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stoprun = 0;
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samps = 0;
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}
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}
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else {
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startrun = 0;
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}
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}
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s++;
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block--;
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}
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return bGoodResult;
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}
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void EffectFindClipping::PopulateOrExchange(ShuttleGui & S)
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{
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S.StartMultiColumn(2, wxALIGN_CENTER);
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{
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S.Validator<IntegerValidator<int>>(
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&mStart, NumValidatorStyle::DEFAULT, MIN_Start)
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.TieTextBox(XXO("&Start threshold (samples):"), mStart, 10);
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S.Validator<IntegerValidator<int>>(
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&mStop, NumValidatorStyle::DEFAULT, MIN_Stop)
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.TieTextBox(XXO("St&op threshold (samples):"), mStop, 10);
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}
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S.EndMultiColumn();
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}
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bool EffectFindClipping::TransferDataToWindow()
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{
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ShuttleGui S(mUIParent, eIsSettingToDialog);
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PopulateOrExchange(S);
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return true;
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}
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bool EffectFindClipping::TransferDataFromWindow()
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{
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if (!mUIParent->Validate())
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{
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return false;
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}
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ShuttleGui S(mUIParent, eIsGettingFromDialog);
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PopulateOrExchange(S);
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return true;
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}
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