Audacity 3.2.0
Public Member Functions | Static Public Attributes | Private Member Functions | List of all members
EffectStereoToMono Class Referencefinal

An Effect to convert stereo to mono. More...

#include <StereoToMono.h>

Inheritance diagram for EffectStereoToMono:
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Collaboration diagram for EffectStereoToMono:
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Public Member Functions

 EffectStereoToMono ()
 
virtual ~EffectStereoToMono ()
 
ComponentInterfaceSymbol GetSymbol () const override
 
TranslatableString GetDescription () const override
 
EffectType GetType () const override
 Type determines how it behaves. More...
 
bool IsInteractive () const override
 Whether the effect needs a dialog for entry of settings. More...
 
unsigned GetAudioInCount () const override
 How many input buffers to allocate at once. More...
 
unsigned GetAudioOutCount () const override
 How many output buffers to allocate at once. More...
 
bool Process (EffectInstance &instance, EffectSettings &settings) override
 Actually do the effect here. More...
 
bool IsHiddenFromMenus () const override
 Default is false. More...
 
- Public Member Functions inherited from StatefulEffect
std::shared_ptr< EffectInstanceMakeInstance () const override
 Make an object maintaining short-term state of an Effect. More...
 
- Public Member Functions inherited from StatefulEffectBase
virtual bool Init ()
 Call once to set up state for whole list of tracks to be processed. More...
 
virtual bool Process (EffectInstance &instance, EffectSettings &settings)=0
 Actually do the effect here. More...
 
virtual bool RealtimeInitialize (EffectSettings &settings, double sampleRate)
 
virtual bool RealtimeAddProcessor (EffectSettings &settings, EffectOutputs *pOutputs, unsigned numChannels, float sampleRate)
 
virtual bool RealtimeSuspend ()
 
virtual bool RealtimeResume ()
 
virtual bool RealtimeProcessStart (MessagePackage &package)
 settings are possibly changed, since last call, by an asynchronous dialog More...
 
virtual size_t RealtimeProcess (size_t group, EffectSettings &settings, const float *const *inBuf, float *const *outBuf, size_t numSamples)
 
virtual bool RealtimeProcessEnd (EffectSettings &settings) noexcept
 settings can be updated to let a dialog change appearance at idle More...
 
virtual bool RealtimeFinalize (EffectSettings &settings) noexcept
 
virtual size_t SetBlockSize (size_t maxBlockSize)
 
virtual size_t GetBlockSize () const
 
virtual unsigned GetAudioInCount () const
 How many input buffers to allocate at once. More...
 
virtual unsigned GetAudioOutCount () const
 How many output buffers to allocate at once. More...
 
virtual sampleCount GetLatency () const
 
- Public Member Functions inherited from Effect
 Effect ()
 
virtual ~Effect ()
 
PluginPath GetPath () const override
 
bool VisitSettings (SettingsVisitor &visitor, EffectSettings &settings) override
 
bool VisitSettings (ConstSettingsVisitor &visitor, const EffectSettings &settings) const override
 
ComponentInterfaceSymbol GetSymbol () const override
 
VendorSymbol GetVendor () const override
 
wxString GetVersion () const override
 
TranslatableString GetDescription () const override
 
EffectType GetType () const override
 Type determines how it behaves. More...
 
EffectFamilySymbol GetFamily () const override
 Report identifier and user-visible name of the effect protocol. More...
 
bool IsInteractive () const override
 Whether the effect needs a dialog for entry of settings. More...
 
bool IsDefault () const override
 Whether the effect sorts "above the line" in the menus. More...
 
RealtimeSince RealtimeSupport () const override
 Since which version of Audacity has the effect supported realtime? More...
 
bool SupportsAutomation () const override
 Whether the effect has any automatable controls. More...
 
bool SaveSettings (const EffectSettings &settings, CommandParameters &parms) const override
 Store settings as keys and values. More...
 
bool LoadSettings (const CommandParameters &parms, EffectSettings &settings) const override
 Restore settings from keys and values. More...
 
OptionalMessage LoadUserPreset (const RegistryPath &name, EffectSettings &settings) const override
 
bool SaveUserPreset (const RegistryPath &name, const EffectSettings &settings) const override
 Save settings in the configuration file as a user-named preset. More...
 
RegistryPaths GetFactoryPresets () const override
 Report names of factory presets. More...
 
OptionalMessage LoadFactoryPreset (int id, EffectSettings &settings) const override
 
OptionalMessage LoadFactoryDefaults (EffectSettings &settings) const override
 
virtual const EffectParameterMethodsParameters () const
 
int ShowClientInterface (wxWindow &parent, wxDialog &dialog, EffectUIValidator *pValidator, bool forceModal) override
 
EffectUIClientInterfaceGetEffectUIClientInterface () override
 Returns the EffectUIClientInterface instance for this effect. More...
 
std::unique_ptr< EffectUIValidatorPopulateUI (ShuttleGui &S, EffectInstance &instance, EffectSettingsAccess &access, const EffectOutputs *pOutputs) override
 Adds controls to a panel that is given as the parent window of S More...
 
bool IsGraphicalUI () override
 
bool ValidateUI (EffectSettings &) override
 
bool CloseUI () override
 
bool CanExportPresets () override
 
void ExportPresets (const EffectSettings &settings) const override
 
OptionalMessage ImportPresets (EffectSettings &settings) override
 
bool HasOptions () override
 
void ShowOptions () override
 
const EffectSettingsManagerGetDefinition () const override
 
virtual NumericFormatSymbol GetSelectionFormat ()
 
int ShowHostInterface (wxWindow &parent, const EffectDialogFactory &factory, std::shared_ptr< EffectInstance > &pInstance, EffectSettingsAccess &access, bool forceModal=false) override
 Usually applies factory to self and given access. More...
 
bool SaveSettingsAsString (const EffectSettings &settings, wxString &parms) const override
 
OptionalMessage LoadSettingsFromString (const wxString &parms, EffectSettings &settings) const override
 
bool IsBatchProcessing () const override
 
void SetBatchProcessing () override
 
void UnsetBatchProcessing () override
 
bool TransferDataToWindow (const EffectSettings &settings) override
 Update controls for the settings. More...
 
bool TransferDataFromWindow (EffectSettings &settings) override
 Update the given settings from controls. More...
 
unsigned TestUIFlags (unsigned mask)
 
bool Delegate (Effect &delegate, EffectSettings &settings)
 Re-invoke DoEffect on another Effect object that implements the work. More...
 
int MessageBox (const TranslatableString &message, long style=DefaultMessageBoxStyle, const TranslatableString &titleStr={}) const
 
bool EnableApply (bool enable=true)
 
wxWindow * GetUIParent ()
 
- Public Member Functions inherited from EffectBase
 EffectBase ()
 
 ~EffectBase () override
 
void SetTracks (TrackList *pTracks)
 
- Public Member Functions inherited from EffectUIClientInterface
virtual ~EffectUIClientInterface ()
 
virtual int ShowClientInterface (wxWindow &parent, wxDialog &dialog, EffectUIValidator *pValidator, bool forceModal=false)=0
 
virtual bool IsGraphicalUI ()=0
 
virtual std::unique_ptr< EffectUIValidatorPopulateUI (ShuttleGui &S, EffectInstance &instance, EffectSettingsAccess &access, const EffectOutputs *pOutputs)=0
 Adds controls to a panel that is given as the parent window of S More...
 
virtual bool CanExportPresets ()=0
 
virtual void ExportPresets (const EffectSettings &settings) const =0
 
virtual OptionalMessage ImportPresets (EffectSettings &settings)=0
 
virtual bool HasOptions ()=0
 
virtual void ShowOptions ()=0
 
virtual bool ValidateUI (EffectSettings &settings)=0
 
virtual bool CloseUI ()=0
 
- Public Member Functions inherited from EffectPlugin
EffectPluginoperator= (EffectPlugin &)=delete
 
virtual ~EffectPlugin ()
 
virtual const EffectSettingsManagerGetDefinition () const =0
 
virtual int ShowHostInterface (wxWindow &parent, const EffectDialogFactory &factory, std::shared_ptr< EffectInstance > &pInstance, EffectSettingsAccess &access, bool forceModal=false)=0
 Usually applies factory to self and given access. More...
 
virtual EffectUIClientInterfaceGetEffectUIClientInterface ()=0
 Returns the EffectUIClientInterface instance for this effect. More...
 
virtual void Preview (EffectSettingsAccess &access, bool dryOnly)=0
 
virtual bool SaveSettingsAsString (const EffectSettings &settings, wxString &parms) const =0
 
virtual OptionalMessage LoadSettingsFromString (const wxString &parms, EffectSettings &settings) const =0
 
virtual bool IsBatchProcessing () const =0
 
virtual void SetBatchProcessing ()=0
 
virtual void UnsetBatchProcessing ()=0
 
virtual bool DoEffect (EffectSettings &settings, double projectRate, TrackList *list, WaveTrackFactory *factory, NotifyingSelectedRegion &selectedRegion, unsigned flags, wxWindow *pParent=nullptr, const EffectDialogFactory &dialogFactory={}, const EffectSettingsAccessPtr &pAccess=nullptr)=0
 Unfortunately complicated dual-use function. More...
 
virtual bool TransferDataToWindow (const EffectSettings &settings)=0
 Update controls for the settings. More...
 
virtual bool TransferDataFromWindow (EffectSettings &settings)=0
 Update the given settings from controls. More...
 
- Public Member Functions inherited from EffectInstanceFactory
virtual ~EffectInstanceFactory ()
 
virtual std::shared_ptr< EffectInstanceMakeInstance () const =0
 Make an object maintaining short-term state of an Effect. More...
 
- Public Member Functions inherited from EffectSettingsManager
virtual ~EffectSettingsManager ()
 
virtual bool VisitSettings (SettingsVisitor &visitor, EffectSettings &settings)
 
virtual bool VisitSettings (ConstSettingsVisitor &visitor, const EffectSettings &settings) const
 
virtual EffectSettings MakeSettings () const
 
virtual bool CopySettingsContents (const EffectSettings &src, EffectSettings &dst) const
 Update one settings object from another. More...
 
virtual std::unique_ptr< EffectOutputsMakeOutputs () const
 Produce an object to hold values to send to effect output meters. More...
 
- Public Member Functions inherited from EffectDefinitionInterface
virtual ~EffectDefinitionInterface ()
 
virtual EffectType GetType () const =0
 Type determines how it behaves. More...
 
virtual EffectType GetClassification () const
 Determines which menu it appears in; default same as GetType(). More...
 
virtual EffectFamilySymbol GetFamily () const =0
 Report identifier and user-visible name of the effect protocol. More...
 
virtual bool IsInteractive () const =0
 Whether the effect needs a dialog for entry of settings. More...
 
virtual bool IsDefault () const =0
 Whether the effect sorts "above the line" in the menus. More...
 
virtual RealtimeSince RealtimeSupport () const =0
 Since which version of Audacity has the effect supported realtime? More...
 
bool SupportsRealtime () const
 
virtual bool SupportsAutomation () const =0
 Whether the effect has any automatable controls. More...
 
virtual bool EnablesDebug () const
 Whether the effect dialog should have a Debug button; default, always false. More...
 
virtual ManualPageID ManualPage () const
 Name of a page in the Audacity alpha manual, default is empty. More...
 
virtual FilePath HelpPage () const
 Fully qualified local help file name, default is empty. More...
 
virtual bool IsHiddenFromMenus () const
 Default is false. More...
 
- Public Member Functions inherited from ComponentInterface
virtual ~ComponentInterface ()
 
virtual PluginPath GetPath () const =0
 
virtual ComponentInterfaceSymbol GetSymbol () const =0
 
virtual VendorSymbol GetVendor () const =0
 
virtual wxString GetVersion () const =0
 
virtual TranslatableString GetDescription () const =0
 
TranslatableString GetName () const
 

Static Public Attributes

static const ComponentInterfaceSymbol Symbol { XO("Stereo To Mono") }
 
- Static Public Attributes inherited from EffectPlugin
static const wxString kUserPresetIdent = wxT("User Preset:")
 
static const wxString kFactoryPresetIdent = wxT("Factory Preset:")
 
static const wxString kCurrentSettingsIdent = wxT("<Current Settings>")
 
static const wxString kFactoryDefaultsIdent = wxT("<Factory Defaults>")
 

Private Member Functions

bool ProcessOne (sampleCount &curTime, sampleCount totalTime, WaveTrack *left, WaveTrack *right)
 

Additional Inherited Members

- Public Types inherited from StatefulEffectBase
using MessagePackage = EffectInstance::MessagePackage
 
- Public Types inherited from Effect
enum  : long { DefaultMessageBoxStyle = wxOK | wxCENTRE }
 
- Public Types inherited from EffectPlugin
using EffectSettingsAccessPtr = std::shared_ptr< EffectSettingsAccess >
 
- Public Types inherited from EffectDefinitionInterface
enum class  RealtimeSince : unsigned { Never , Since_3_2 , Always }
 In which versions of Audacity was an effect realtime capable? More...
 
- Static Public Member Functions inherited from Effect
static EffectFetchParameters (Effect &e, EffectSettings &)
 
static void IncEffectCounter ()
 
- Static Public Member Functions inherited from EffectDefinitionInterface
static Identifier GetSquashedName (const Identifier &ident)
 A utility that strips spaces and CamelCases a name. More...
 
- Protected Member Functions inherited from Effect
bool EnablePreview (bool enable=true)
 
bool CheckWhetherSkipEffect (const EffectSettings &settings) const override
 Default implementation returns false. More...
 
double CalcPreviewInputLength (const EffectSettings &settings, double previewLength) const override
 Default implementation returns previewLength More...
 
virtual std::unique_ptr< EffectUIValidatorPopulateOrExchange (ShuttleGui &S, EffectInstance &instance, EffectSettingsAccess &access, const EffectOutputs *pOutputs)
 Add controls to effect panel; always succeeds. More...
 
bool TotalProgress (double frac, const TranslatableString &={}) const
 
bool TrackProgress (int whichTrack, double frac, const TranslatableString &={}) const
 
bool TrackGroupProgress (int whichGroup, double frac, const TranslatableString &={}) const
 
int GetNumWaveTracks () const
 
int GetNumWaveGroups () const
 
void GetBounds (const WaveTrack &track, const WaveTrack *pRight, sampleCount *start, sampleCount *len)
 
void CopyInputTracks (bool allSyncLockSelected=false)
 
std::shared_ptr< AddedAnalysisTrackAddAnalysisTrack (const wxString &name=wxString())
 
ModifiedAnalysisTrack ModifyAnalysisTrack (const LabelTrack *pOrigTrack, const wxString &name=wxString())
 
TrackAddToOutputTracks (const std::shared_ptr< Track > &t)
 
- Protected Member Functions inherited from EffectBase
void Preview (EffectSettingsAccess &access, bool dryOnly) override
 
bool DoEffect (EffectSettings &settings, double projectRate, TrackList *list, WaveTrackFactory *factory, NotifyingSelectedRegion &selectedRegion, unsigned flags, wxWindow *pParent, const EffectDialogFactory &dialogFactory, const EffectSettingsAccessPtr &pAccess) override
 Unfortunately complicated dual-use function. More...
 
virtual bool CheckWhetherSkipEffect (const EffectSettings &settings) const =0
 After Init(), tell whether Process() should be skipped. More...
 
virtual double CalcPreviewInputLength (const EffectSettings &settings, double previewLength) const =0
 
void SetLinearEffectFlag (bool linearEffectFlag)
 
void SetPreviewFullSelectionFlag (bool previewDurationFlag)
 
bool IsPreviewing () const
 
void IncludeNotSelectedPreviewTracks (bool includeNotSelected)
 
void ReplaceProcessedTracks (const bool bGoodResult)
 
const TrackListinputTracks () const
 
const AudacityProjectFindProject () const
 
- Protected Attributes inherited from Effect
wxWeakRef< wxDialog > mHostUIDialog
 This smart pointer tracks the lifetime of the dialog. More...
 
wxWindow * mUIParent {}
 
- Protected Attributes inherited from EffectBase
BasicUI::ProgressDialogmProgress {}
 
double mProjectRate {}
 
WaveTrackFactorymFactory {}
 
std::shared_ptr< TrackListmOutputTracks
 
double mT0 {}
 
double mT1 {}
 
wxArrayString mPresetNames
 
unsigned mUIFlags { 0 }
 
- Static Protected Attributes inherited from EffectBase
static int nEffectsDone = 0
 

Detailed Description

An Effect to convert stereo to mono.

Definition at line 16 of file StereoToMono.h.

Constructor & Destructor Documentation

◆ EffectStereoToMono()

EffectStereoToMono::EffectStereoToMono ( )

Definition at line 34 of file StereoToMono.cpp.

35{
36}

◆ ~EffectStereoToMono()

EffectStereoToMono::~EffectStereoToMono ( )
virtual

Definition at line 38 of file StereoToMono.cpp.

39{
40}

Member Function Documentation

◆ GetAudioInCount()

unsigned EffectStereoToMono::GetAudioInCount ( ) const
overridevirtual

How many input buffers to allocate at once.

If the instance processes channels independently, this can return 1 The result is not necessarily well defined before RealtimeInitialize Default implementation returns 0

Reimplemented from StatefulEffectBase.

Definition at line 67 of file StereoToMono.cpp.

68{
69 return 2;
70}

◆ GetAudioOutCount()

unsigned EffectStereoToMono::GetAudioOutCount ( ) const
overridevirtual

How many output buffers to allocate at once.

The result is not necessarily well defined before RealtimeInitialize Default implementation returns 0

Reimplemented from StatefulEffectBase.

Definition at line 72 of file StereoToMono.cpp.

73{
74 return 1;
75}

◆ GetDescription()

TranslatableString EffectStereoToMono::GetDescription ( ) const
overridevirtual

Reimplemented from Effect.

Definition at line 49 of file StereoToMono.cpp.

50{
51 return XO("Converts stereo tracks to mono");
52}
#define XO(s)
Definition: Internat.h:31

References XO.

◆ GetSymbol()

ComponentInterfaceSymbol EffectStereoToMono::GetSymbol ( ) const
overridevirtual

Reimplemented from Effect.

Definition at line 44 of file StereoToMono.cpp.

45{
46 return Symbol;
47}
static const ComponentInterfaceSymbol Symbol
Definition: StereoToMono.h:19

References Symbol.

◆ GetType()

EffectType EffectStereoToMono::GetType ( ) const
overridevirtual

Type determines how it behaves.

Reimplemented from Effect.

Definition at line 56 of file StereoToMono.cpp.

57{
58 // Really EffectTypeProcess, but this prevents it from showing in the Effect Menu
59 return EffectTypeHidden;
60}
@ EffectTypeHidden

References EffectTypeHidden.

◆ IsHiddenFromMenus()

bool EffectStereoToMono::IsHiddenFromMenus ( ) const
overridevirtual

Default is false.

Reimplemented from EffectDefinitionInterface.

Definition at line 223 of file StereoToMono.cpp.

224{
225 return true;
226}

◆ IsInteractive()

bool EffectStereoToMono::IsInteractive ( ) const
overridevirtual

Whether the effect needs a dialog for entry of settings.

Reimplemented from Effect.

Definition at line 62 of file StereoToMono.cpp.

63{
64 return false;
65}

◆ Process()

bool EffectStereoToMono::Process ( EffectInstance instance,
EffectSettings settings 
)
overridevirtual

Actually do the effect here.

Returns
success

Implements StatefulEffectBase.

Definition at line 79 of file StereoToMono.cpp.

80{
81 // Do not use mWaveTracks here. We will possibly DELETE tracks,
82 // so we must use the "real" tracklist.
83 this->CopyInputTracks(); // Set up mOutputTracks.
84 bool bGoodResult = true;
85
86 // Determine the total time (in samples) used by all of the target tracks
87 sampleCount totalTime = 0;
88
89 auto trackRange = mOutputTracks->SelectedLeaders< WaveTrack >();
90 while (trackRange.first != trackRange.second)
91 {
92 auto left = *trackRange.first;
93 auto channels = TrackList::Channels(left);
94 if (channels.size() > 1)
95 {
96 auto right = *channels.rbegin();
97 auto leftRate = left->GetRate();
98 auto rightRate = right->GetRate();
99
100 if (leftRate != rightRate)
101 {
102 if (leftRate != mProjectRate)
103 {
104 mProgress->SetMessage(XO("Resampling left channel"));
105 left->Resample(mProjectRate, mProgress);
106 leftRate = mProjectRate;
107 }
108 if (rightRate != mProjectRate)
109 {
110 mProgress->SetMessage(XO("Resampling right channel"));
111 right->Resample(mProjectRate, mProgress);
112 rightRate = mProjectRate;
113 }
114 }
115 {
116 auto start = wxMin(left->TimeToLongSamples(left->GetStartTime()),
117 right->TimeToLongSamples(right->GetStartTime()));
118 auto end = wxMax(left->TimeToLongSamples(left->GetEndTime()),
119 right->TimeToLongSamples(right->GetEndTime()));
120
121 totalTime += (end - start);
122 }
123 }
124
125 ++trackRange.first;
126 }
127
128 // Process each stereo track
129 sampleCount curTime = 0;
130 bool refreshIter = false;
131
132 mProgress->SetMessage(XO("Mixing down to mono"));
133
134 trackRange = mOutputTracks->SelectedLeaders< WaveTrack >();
135 while (trackRange.first != trackRange.second)
136 {
137 auto left = *trackRange.first;
138 auto channels = TrackList::Channels(left);
139 if (channels.size() > 1)
140 {
141 auto right = *channels.rbegin();
142
143 bGoodResult = ProcessOne(curTime, totalTime, left, right);
144 if (!bGoodResult)
145 {
146 break;
147 }
148
149 // The right channel has been deleted, so we must restart from the beginning
150 refreshIter = true;
151 }
152
153 if (refreshIter)
154 {
155 trackRange = mOutputTracks->SelectedLeaders< WaveTrack >();
156 refreshIter = false;
157 }
158 else
159 {
160 ++trackRange.first;
161 }
162 }
163
164 this->ReplaceProcessedTracks(bGoodResult);
165 return bGoodResult;
166}
virtual void SetMessage(const TranslatableString &message)=0
Change an existing dialog's message.
std::shared_ptr< TrackList > mOutputTracks
Definition: EffectBase.h:107
double mProjectRate
Definition: EffectBase.h:101
BasicUI::ProgressDialog * mProgress
Definition: EffectBase.h:100
void ReplaceProcessedTracks(const bool bGoodResult)
Definition: EffectBase.cpp:240
void CopyInputTracks(bool allSyncLockSelected=false)
Definition: Effect.cpp:733
bool ProcessOne(sampleCount &curTime, sampleCount totalTime, WaveTrack *left, WaveTrack *right)
static auto Channels(TrackType *pTrack) -> TrackIterRange< TrackType >
Definition: Track.h:1541
A Track that contains audio waveform data.
Definition: WaveTrack.h:57
Positions or offsets within audio files need a wide type.
Definition: SampleCount.h:19
auto end(const Ptr< Type, BaseDeleter > &p)
Enables range-for.
Definition: PackedArray.h:159

References TrackList::Channels(), Effect::CopyInputTracks(), PackedArray::end(), EffectBase::mOutputTracks, EffectBase::mProgress, EffectBase::mProjectRate, ProcessOne(), EffectBase::ReplaceProcessedTracks(), BasicUI::ProgressDialog::SetMessage(), and XO.

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◆ ProcessOne()

bool EffectStereoToMono::ProcessOne ( sampleCount curTime,
sampleCount  totalTime,
WaveTrack left,
WaveTrack right 
)
private

Definition at line 168 of file StereoToMono.cpp.

169{
170 auto idealBlockLen = left->GetMaxBlockSize() * 2;
171 bool bResult = true;
172 sampleCount processed = 0;
173
174 auto start = wxMin(left->GetStartTime(), right->GetStartTime());
175 auto end = wxMax(left->GetEndTime(), right->GetEndTime());
176
177 Mixer::Inputs tracks;
178 for (auto pTrack : { left, right })
179 tracks.emplace_back(
180 pTrack->SharedPointer<const SampleTrack>(), GetEffectStages(*pTrack));
181
182 Mixer mixer(move(tracks),
183 true, // Throw to abort mix-and-render if read fails:
185 start,
186 end,
187 1,
188 idealBlockLen,
189 false, // Not interleaved
190 left->GetRate(), // Process() checks that left and right
191 // rates are the same
193
194 auto outTrack = left->EmptyCopy();
195 outTrack->ConvertToSampleFormat(floatSample);
196
197 while (auto blockLen = mixer.Process()) {
198 auto buffer = mixer.GetBuffer();
199 for (auto i = 0; i < blockLen; i++)
200 {
201 ((float *)buffer)[i] /= 2.0;
202 }
203 outTrack->Append(buffer, floatSample, blockLen);
204
205 curTime += blockLen;
206 if (TotalProgress(curTime.as_double() / totalTime.as_double()))
207 {
208 return false;
209 }
210 }
211 outTrack->Flush();
212
213 double minStart = wxMin(left->GetStartTime(), right->GetStartTime());
214 left->Clear(left->GetStartTime(), left->GetEndTime());
215 left->Paste(minStart, outTrack.get());
216 mOutputTracks->UnlinkChannels(*left);
217 mOutputTracks->Remove(right);
219
220 return bResult;
221}
std::vector< MixerOptions::StageSpecification > GetEffectStages(const WaveTrack &track)
@ floatSample
Definition: SampleFormat.h:34
const TrackList * inputTracks() const
Definition: EffectBase.h:104
bool TotalProgress(double frac, const TranslatableString &={}) const
Definition: Effect.cpp:675
Functions for doing the mixdown of the tracks.
Definition: Mix.h:26
std::vector< Input > Inputs
Definition: Mix.h:43
static RealtimeEffectList & Get(AudacityProject &project)
void Clear()
Use only in the main thread. Sends Remove messages.
void Paste(double t0, const Track *src) override
Definition: WaveTrack.cpp:1573
double GetStartTime() const override
Get the time at which the first clip in the track starts.
Definition: WaveTrack.cpp:2005
size_t GetMaxBlockSize() const override
This returns a nonnegative number of samples meant to size a memory buffer.
Definition: WaveTrack.cpp:1816
void Clear(double t0, double t1) override
Definition: WaveTrack.cpp:788
double GetEndTime() const override
Get the time at which the last clip in the track ends, plus recorded stuff.
Definition: WaveTrack.cpp:2025
double GetRate() const override
Definition: WaveTrack.cpp:479
Holder EmptyCopy(const SampleBlockFactoryPtr &pFactory={}, bool keepLink=true) const
Definition: WaveTrack.cpp:705
double as_double() const
Definition: SampleCount.h:46
Immutable structure is an argument to Mixer's constructor.
Definition: MixerOptions.h:54

References sampleCount::as_double(), RealtimeEffectList::Clear(), WaveTrack::Clear(), WaveTrack::EmptyCopy(), PackedArray::end(), floatSample, RealtimeEffectList::Get(), GetEffectStages(), WaveTrack::GetEndTime(), WaveTrack::GetMaxBlockSize(), WaveTrack::GetRate(), WaveTrack::GetStartTime(), EffectBase::inputTracks(), EffectBase::mOutputTracks, WaveTrack::Paste(), and Effect::TotalProgress().

Referenced by Process().

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Member Data Documentation

◆ Symbol

const ComponentInterfaceSymbol EffectStereoToMono::Symbol { XO("Stereo To Mono") }
static

Definition at line 19 of file StereoToMono.h.

Referenced by GetSymbol().


The documentation for this class was generated from the following files: