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https://github.com/cookiengineer/audacity
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Ditch long-obsolete cruft files.
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v.audacity
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/**********************************************************************
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Audacity: A Digital Audio Editor
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SimplePairedTwoTrack.cpp
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Vincent A. Busam
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Dominic Mazzoni
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*******************************************************************//**
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\class EffectSimplePairedTwoTrackBase
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\brief Obsolete. Does nothing. Don't use it.
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" This abstract class simplifies the implementation of a basic
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two track effect where you want the values of both tracks
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together. Inherit from it if your effect doesn't just
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modifies a track in place and doesn't care how many samples
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it gets at a time. Your derived class only needs to implement
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GetEffectName, GetEffectAction, and ProcessSimplePairedTwoTrack. "
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*******************************************************************//**
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\class EffectSimplePairedTwoTrack<_DataType,_xxxSample>
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\brief Obsolete. Don't use it.
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*//*******************************************************************/
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// O B S O L E T E
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// Indentation settings for Vim and Emacs and unique identifier for Arch, a
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// version control system. Please do not modify past this point.
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//
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// Local Variables:
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// c-basic-offset: 3
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// indent-tabs-mode: nil
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// End:
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//
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// vim: et sts=3 sw=3
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// arch-tag: 5e90bf74-e305-4dc7-972c-a86a52cba6c1
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@ -1,245 +0,0 @@
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/**********************************************************************
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Audacity: A Digital Audio Editor
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SimplePairedTwoTrack.h
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Vincent A. Busam
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Dominic Mazzoni
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This abstract class simplifies the implementation of a basic
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two track effect where you want the values of both tracks
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together. Inherit from it if your effect doesn't just
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modifies a track in place and doesn't care how many samples
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it gets at a time. Your derived class only needs to implement
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GetEffectName, GetEffectAction, and ProcessSimplePairedTwoTrack.
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**********************************************************************/
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#ifndef __AUDACITY_EFFECT_SIMPLE_PAIRED_TWO_TRACK__
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#define __AUDACITY_EFFECT_SIMPLE_PAIRED_TWO_TRACK__
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#include "Effect.h"
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class WaveTrack;
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// The only purpose for EffectSimplePairedTwoTrackBase is to provide virtual function
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// that EffectSimplePairedTwoTrack and its derived classes can use. I couldn't
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// figure out how to do it otherwise.
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// The unfortunate side effect of this base class is that it doesn't know the data types!
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class EffectSimplePairedTwoTrackBase : public Effect
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{
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public:
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virtual ~EffectSimplePairedTwoTrackBase() {};
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// Override this method to actually process audio
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virtual bool ProcessSimplePairedTwoTrack(/*_DataType*/void *bufferLeft,
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/*_DataType*/void *bufferRight, // may be 0
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sampleCount len)
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{ return false; };
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};
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// This class is a template. We can do:
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// typedef EffectSimplePairedTwoTrack<short int,int16Sample> EffectSimplePairedTwoTrack
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// and similarly for other types.
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template<class _DataType,sampleFormat _xxxSample>
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class EffectSimplePairedTwoTrack : public EffectSimplePairedTwoTrackBase
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{
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public:
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// It is not usually necessary to override this method
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virtual bool Process();
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// It is necessary to provide an implementation for ProcessSimplePairedTwoTrack.
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protected:
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// It is not usually necessary to override this method
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virtual bool Init();
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// It is not usually necessary to override this method
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virtual bool ProcessTwo(int count, WaveTrack *left, WaveTrack *right,
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sampleCount lstart,
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sampleCount rstart, sampleCount len);
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// It is not usually necessary to override this method
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void End();
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protected:
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// Other useful information
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sampleCount mnBlockSize; // 0 if no processing done, thus no buffers allocated
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_DataType *mLeftBuffer;
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_DataType *mRightBuffer;
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int mnTracks; // either 1 or 2, set in Init
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};
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/**********************************************************************
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**********************************************************************/
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#include <math.h>
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#include <wx/defs.h>
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#include <wx/msgdlg.h>
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#include "../WaveTrack.h" /*WAVETRACK*/
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template<class _DataType,sampleFormat _xxxSample>
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bool EffectSimplePairedTwoTrack<_DataType,_xxxSample>::Init()
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{
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mnTracks = 1;
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mnBlockSize = 0;
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// FIX-ME: Should this be SelectedTrackListOfKindIterator?
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TrackListOfKindIterator iter(Track::Wave, mTracks);
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WaveTrack *left = (WaveTrack*)iter.First();
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if( NULL == left )
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return false;
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while(left) {
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sampleCount lstart, rstart;
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sampleCount llen, rlen;
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GetSamples((WaveTrack *)left, &lstart, &llen);
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if (left->GetLinked()) {
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mnTracks = 2;
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WaveTrack *right = (WaveTrack*)(iter.Next());
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GetSamples((WaveTrack *)right, &rstart, &rlen);
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if (llen != rlen || ((WaveTrack *)left)->GetRate() != ((WaveTrack *)right)->GetRate()) {
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wxMessageBox(_("Sorry, this effect cannot be performed on stereo tracks where the individual channels of the track do not match."));
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return false;
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}
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}
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left = (WaveTrack*)(iter.Next());
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}
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return true;
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}
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template<class _DataType,sampleFormat _xxxSample>
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bool EffectSimplePairedTwoTrack<_DataType,_xxxSample>::Process()
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{
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this->CopyInputTracks(); // Set up mOutputTracks.
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bool bGoodResult = true;
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SelectedTrackListOfKindIterator iter(Track::Wave, mOutputTracks);
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int count = 0;
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WaveTrack *left = (WaveTrack*)(iter.First());
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WaveTrack *right;
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while(left) {
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sampleCount lstart, rstart;
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sampleCount len;
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GetSamples((WaveTrack *)left, &lstart, &len);
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right = NULL;
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if (left->GetLinked()) {
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right = (WaveTrack*)(iter.Next());
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GetSamples((WaveTrack *)right, &rstart, &len);
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}
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bGoodResult = ProcessTwo(count,
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(WaveTrack *)left,
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(WaveTrack *)right,
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lstart,
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rstart,
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len );
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if (!bGoodResult)
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break;
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left = (WaveTrack*)(iter.Next());
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count++;
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}
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this->ReplaceProcessedTracks(bGoodResult);
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return bGoodResult;
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}
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template<class _DataType,sampleFormat _xxxSample>
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bool EffectSimplePairedTwoTrack<_DataType,_xxxSample>::ProcessTwo(int count,
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WaveTrack *left,
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WaveTrack *right,
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sampleCount lstart,
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sampleCount rstart,
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sampleCount len)
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{
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if (mnBlockSize == 0) {
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mnBlockSize = left->GetMaxBlockSize();
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mLeftBuffer = new _DataType[mnBlockSize];
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if ( mnTracks > 1 )
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mRightBuffer = new _DataType[mnBlockSize];
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else
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mRightBuffer = 0;
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}
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// Get both buffers here
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sampleCount originalLen = len;
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sampleCount ls = lstart;
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sampleCount rs = rstart;
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while (len) {
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int block = mnBlockSize;
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if (block > len)
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block = len;
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left->Get((samplePtr)mLeftBuffer, _xxxSample, ls, block);
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if (right) {
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right->Get((samplePtr)mRightBuffer, _xxxSample, rs, block);
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}
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// The derived class process the tracks here
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ProcessSimplePairedTwoTrack(mLeftBuffer, mRightBuffer, block);
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left->Set((samplePtr)mLeftBuffer, _xxxSample, ls, block);
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if (right) {
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right->Set((samplePtr)mRightBuffer, _xxxSample, rs, block);
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}
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len -= block;
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ls += block;
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rs += block;
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if (mnTracks > 1) {
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if (TrackGroupProgress(count, (ls-lstart)/(double)originalLen))
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break;
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}
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else {
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if (TrackProgress(count, (ls-lstart)/(double)originalLen))
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break;
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}
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}
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return true;
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}
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template<class _DataType,sampleFormat _xxxSample>
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void EffectSimplePairedTwoTrack<_DataType,_xxxSample>::End()
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{
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if (mnBlockSize) {
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delete[]mLeftBuffer;
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delete[]mRightBuffer;
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}
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mLeftBuffer = NULL;
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mRightBuffer = NULL;
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}
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#endif
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// Indentation settings for Vim and Emacs and unique identifier for Arch, a
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// version control system. Please do not modify past this point.
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//
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// Local Variables:
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// c-basic-offset: 3
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// indent-tabs-mode: nil
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// End:
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//
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// vim: et sts=3 sw=3
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// arch-tag: 72d8e0e3-6e8a-478e-a867-7e0acc902f4d
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