mirror of
https://github.com/cookiengineer/audacity
synced 2025-05-03 17:19:43 +02:00
296 lines
8.5 KiB
C++
296 lines
8.5 KiB
C++
/**********************************************************************
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Audacity: A Digital Audio Editor
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TimeTrack.cpp
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Dr William Bland
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*******************************************************************//*!
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\class TimeTrack
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\brief A kind of Track used to 'warp time'
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*//*******************************************************************/
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#include <wx/intl.h>
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#include "Audacity.h"
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#include "AColor.h"
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#include "TimeTrack.h"
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#include "widgets/Ruler.h"
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#include "Prefs.h"
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#include "Internat.h"
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#include "Resample.h"
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TimeTrack *TrackFactory::NewTimeTrack()
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{
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return new TimeTrack(mDirManager);
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}
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TimeTrack::TimeTrack(DirManager *projDirManager):
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Track(projDirManager)
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{
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mHeight = 100;
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mRangeLower = 0.9;
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mRangeUpper = 1.1;
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mDisplayLog = false;
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mEnvelope = new Envelope();
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mEnvelope->SetTrackLen(1000000000.0);
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mEnvelope->SetInterpolateDB(true);
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mEnvelope->Flatten(1.0);
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mEnvelope->Mirror(false);
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mEnvelope->SetOffset(0);
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mEnvelope->SetRange(0.1, 10.0); //TODO-MB: are these sensible values?
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SetDefaultName(_("Time Track"));
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SetName(GetDefaultName());
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mRuler = new Ruler();
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mRuler->SetLabelEdges(false);
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mRuler->SetFormat(Ruler::TimeFormat);
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blankBrush.SetColour(214, 214, 214);
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blankPen.SetColour(214, 214, 214);
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}
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TimeTrack::TimeTrack(TimeTrack &orig):
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Track(orig)
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{
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Init(orig);
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mEnvelope = new Envelope();
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mEnvelope->SetTrackLen(1000000000.0);
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SetInterpolateLog(orig.GetInterpolateLog()); // this calls Envelope::SetInterpolateDB
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mEnvelope->Flatten(1.0);
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mEnvelope->Mirror(false);
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mEnvelope->SetOffset(0);
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mEnvelope->SetRange(orig.GetMinValue(), orig.GetMaxValue());
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mEnvelope->Paste(0.0, orig.mEnvelope);
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mRuler = new Ruler();
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mRuler->SetLabelEdges(false);
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mRuler->SetFormat(Ruler::TimeFormat);
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blankBrush.SetColour(214, 214, 214);
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blankPen.SetColour(214, 214, 214);
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}
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// Copy the track metadata but not the contents.
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void TimeTrack::Init(const TimeTrack &orig)
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{
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Track::Init(orig);
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SetDefaultName(orig.GetDefaultName());
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SetName(orig.GetName());
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SetRangeLower(orig.GetRangeLower());
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SetRangeUpper(orig.GetRangeUpper());
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SetDisplayLog(orig.GetDisplayLog());
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}
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TimeTrack::~TimeTrack()
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{
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delete mEnvelope;
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mEnvelope = NULL;
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delete mRuler;
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}
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Track *TimeTrack::Duplicate()
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{
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return new TimeTrack(*this);
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}
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bool TimeTrack::GetInterpolateLog() const
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{
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return mEnvelope->GetInterpolateDB();
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}
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void TimeTrack::SetInterpolateLog(bool interpolateLog) {
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mEnvelope->SetInterpolateDB(interpolateLog);
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}
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//Compute the (average) warp factor between two non-warped time points
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double TimeTrack::ComputeWarpFactor(double t0, double t1)
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{
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return GetEnvelope()->AverageOfInverse(t0, t1);
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}
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double TimeTrack::ComputeWarpedLength(double t0, double t1)
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{
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return GetEnvelope()->IntegralOfInverse(t0, t1);
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}
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double TimeTrack::SolveWarpedLength(double t0, double length)
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{
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return GetEnvelope()->SolveIntegralOfInverse(t0, length);
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}
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bool TimeTrack::HandleXMLTag(const wxChar *tag, const wxChar **attrs)
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{
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if (!wxStrcmp(tag, wxT("timetrack"))) {
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mRescaleXMLValues = true; // will be set to false if upper/lower is found
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long nValue;
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while(*attrs) {
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const wxChar *attr = *attrs++;
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const wxChar *value = *attrs++;
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if (!value)
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break;
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const wxString strValue = value;
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if (!wxStrcmp(attr, wxT("name")) && XMLValueChecker::IsGoodString(strValue))
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mName = strValue;
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else if (!wxStrcmp(attr, wxT("height")) &&
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XMLValueChecker::IsGoodInt(strValue) && strValue.ToLong(&nValue))
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mHeight = nValue;
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else if (!wxStrcmp(attr, wxT("minimized")) &&
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XMLValueChecker::IsGoodInt(strValue) && strValue.ToLong(&nValue))
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mMinimized = (nValue != 0);
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else if (!wxStrcmp(attr, wxT("rangelower")))
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{
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mRangeLower = Internat::CompatibleToDouble(value);
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mRescaleXMLValues = false;
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}
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else if (!wxStrcmp(attr, wxT("rangeupper")))
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{
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mRangeUpper = Internat::CompatibleToDouble(value);
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mRescaleXMLValues = false; //TODO-MB: figure out how to rescale after loading
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}
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else if (!wxStrcmp(attr, wxT("displaylog")) &&
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XMLValueChecker::IsGoodInt(strValue) && strValue.ToLong(&nValue))
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{
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SetDisplayLog(nValue != 0);
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//TODO-MB: This causes a graphical glitch, TrackPanel should probably be Refresh()ed after loading.
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// I don't know where to do this though.
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}
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else if (!wxStrcmp(attr, wxT("interpolatelog")) &&
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XMLValueChecker::IsGoodInt(strValue) && strValue.ToLong(&nValue))
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{
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SetInterpolateLog(nValue != 0);
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}
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} // while
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return true;
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}
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return false;
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}
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XMLTagHandler *TimeTrack::HandleXMLChild(const wxChar *tag)
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{
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if (!wxStrcmp(tag, wxT("envelope")))
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return mEnvelope;
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return NULL;
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}
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void TimeTrack::WriteXML(XMLWriter &xmlFile)
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{
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xmlFile.StartTag(wxT("timetrack"));
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xmlFile.WriteAttr(wxT("name"), mName);
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//xmlFile.WriteAttr(wxT("channel"), mChannel);
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//xmlFile.WriteAttr(wxT("offset"), mOffset, 8);
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xmlFile.WriteAttr(wxT("height"), GetActualHeight());
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xmlFile.WriteAttr(wxT("minimized"), GetMinimized());
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xmlFile.WriteAttr(wxT("rangelower"), mRangeLower, 12);
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xmlFile.WriteAttr(wxT("rangeupper"), mRangeUpper, 12);
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xmlFile.WriteAttr(wxT("displaylog"), GetDisplayLog());
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xmlFile.WriteAttr(wxT("interpolatelog"), GetInterpolateLog());
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mEnvelope->WriteXML(xmlFile);
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xmlFile.EndTag(wxT("timetrack"));
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}
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void TimeTrack::Draw(wxDC & dc, const wxRect & r, double h, double pps)
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{
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double tstep = 1.0 / pps; // Seconds per point
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double t0 = h;
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double t1 = h + (r.width * tstep);
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//Make sure t1 (the right bound) is greater than 0
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if (t1 < 0.0)
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t1 = 0.0;
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//make sure t1 is greater than t0
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if (t0 > t1)
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t0 = t1;
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dc.SetBrush(blankBrush);
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dc.SetPen(blankPen);
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dc.DrawRectangle(r);
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//copy this rectangle away for future use.
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wxRect mid = r;
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// Draw the Ruler
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mRuler->SetBounds(r.x, r.y, r.x + r.width - 1, r.y + r.height - 1);
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double min = t0;
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double max = min + r.width / pps;
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mRuler->SetRange(min, max);
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mRuler->SetFlip(false); // If we don't do this, the Ruler doesn't redraw itself when the envelope is modified.
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// I have no idea why!
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//
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// LL: It's because the ruler only Invalidate()s when the new value is different
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// than the current value.
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mRuler->SetFlip(GetHeight() > 75 ? true : true); // MB: so why don't we just call Invalidate()? :)
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mRuler->Draw(dc, this);
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double *envValues = new double[mid.width];
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GetEnvelope()->GetValues(envValues, mid.width, t0, tstep);
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dc.SetPen(AColor::envelopePen);
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double logLower = log(std::max(1.0e-7, mRangeLower)), logUpper = log(std::max(1.0e-7, mRangeUpper));
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for (int x = 0; x < mid.width; x++)
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{
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double y;
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if(mDisplayLog)
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y = (double)mid.height * (logUpper - log(envValues[x])) / (logUpper - logLower);
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else
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y = (double)mid.height * (mRangeUpper - envValues[x]) / (mRangeUpper - mRangeLower);
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int thisy = r.y + (int)y;
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AColor::Line(dc, mid.x + x, thisy - 1, mid.x + x, thisy+2);
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}
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if (envValues)
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delete[]envValues;
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}
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void TimeTrack::testMe()
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{
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GetEnvelope()->Flatten(0.0);
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GetEnvelope()->Insert( 0.0, 0.2 );
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GetEnvelope()->Insert( 5.0 - 0.001, 0.2 );
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GetEnvelope()->Insert( 5.0 + 0.001, 1.3 );
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GetEnvelope()->Insert( 10.0, 1.3 );
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double value1 = GetEnvelope()->Integral(2.0, 13.0);
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double expected1 = (5.0 - 2.0) * 0.2 + (13.0 - 5.0) * 1.3;
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double value2 = GetEnvelope()->IntegralOfInverse(2.0, 13.0);
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double expected2 = (5.0 - 2.0) / 0.2 + (13.0 - 5.0) / 1.3;
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if( fabs(value1 - expected1) > 0.01 )
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{
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printf( "TimeTrack: Integral failed! expected %f got %f\n", expected1, value1);
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}
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if( fabs(value2 - expected2) > 0.01 )
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{
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printf( "TimeTrack: IntegralOfInverse failed! expected %f got %f\n", expected2, value2);
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}
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/*double reqt0 = 10.0 - .1;
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double reqt1 = 10.0 + .1;
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double t0 = warp( reqt0 );
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double t1 = warp( reqt1 );
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if( t0 > t1 )
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{
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printf( "TimeTrack: Warping reverses an interval! [%.2f,%.2f] -> [%.2f,%.2f]\n",
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reqt0, reqt1,
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t0, t1 );
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}*/
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}
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