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MixerBoard.cpp
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MixerBoard.cpp
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/**********************************************************************
Audacity: A Digital Audio Editor
MixerBoard.cpp
Vaughan Johnson, January 2007
Dominic Mazzoni
**********************************************************************/
#include "MixerBoard.h"
#include <cfloat>
#include <math.h>
#include <wx/setup.h> // for wxUSE_* macros
#include <wx/app.h>
#include <wx/bmpbuttn.h>
#include <wx/dcclient.h>
#include <wx/icon.h>
#include <wx/settings.h> // for wxSystemSettings::GetColour and wxSystemSettings::GetMetric
#include "AColor.h"
#include "AllThemeResources.h"
#include "AudioIO.h"
#ifdef USE_MIDI
#include "NoteTrack.h"
#endif
#include "AudioSegmentSampleView.h"
#include "CommonCommandFlags.h"
#include "KeyboardCapture.h"
#include "prefs/GUISettings.h" // for RTL_WORKAROUND
#include "PendingTracks.h"
#include "Project.h"
#include "ProjectAudioIO.h"
#include "ProjectAudioManager.h"
#include "ProjectHistory.h"
#include "ProjectFileIO.h"
#include "ProjectWindow.h"
#include "ProjectWindows.h"
#include "SelectUtilities.h"
#include "Theme.h"
#include "TrackPanel.h"
#include "TrackUtilities.h"
#include "UndoManager.h"
#include "Viewport.h"
#include "WaveTrack.h"
#include "widgets/AButton.h"
#include "widgets/MeterPanel.h"
#include "widgets/auStaticText.h"
#include "../images/MusicalInstruments.h"
#ifdef __WXMSW__
#include "../images/AudacityLogo.xpm"
#else
#include "../images/AudacityLogo48x48.xpm"
#endif
#include "MenuCreator.h"
#include <numeric> // accumulate
#define AudacityMixerBoardTitle XO("Audacity Mixer%s")
// class MixerTrackSlider
BEGIN_EVENT_TABLE(MixerTrackSlider, ASlider)
EVT_MOUSE_EVENTS(MixerTrackSlider::OnMouseEvent)
EVT_SET_FOCUS(MixerTrackSlider::OnFocus)
EVT_KILL_FOCUS(MixerTrackSlider::OnFocus)
EVT_COMMAND(wxID_ANY, EVT_CAPTURE_KEY, MixerTrackSlider::OnCaptureKey)
END_EVENT_TABLE()
MixerTrackSlider::MixerTrackSlider(wxWindow * parent,
wxWindowID id,
const TranslatableString &name,
const wxPoint & pos,
const wxSize & size,
const ASlider::Options &options)
: ASlider(parent, id, name, pos, size, options)
{
}
void MixerTrackSlider::OnMouseEvent(wxMouseEvent &event)
{
ASlider::OnMouseEvent(event);
if (event.ButtonUp())
{
MixerTrackCluster* pMixerTrackCluster = (MixerTrackCluster*)(this->GetParent());
switch (mStyle)
{
case DB_SLIDER: pMixerTrackCluster->HandleSliderGain(true); break;
case PAN_SLIDER: pMixerTrackCluster->HandleSliderPan(true); break;
default: break; // no-op
}
}
}
void MixerTrackSlider::OnFocus(wxFocusEvent &event)
{
KeyboardCapture::OnFocus( *this, event );
}
void MixerTrackSlider::OnCaptureKey(wxCommandEvent &event)
{
wxKeyEvent *kevent = (wxKeyEvent *)event.GetEventObject();
int keyCode = kevent->GetKeyCode();
// Pass LEFT/RIGHT/UP/DOWN/PAGEUP/PAGEDOWN through for input/output sliders
if (keyCode == WXK_LEFT || keyCode == WXK_RIGHT ||
keyCode == WXK_UP || keyCode == WXK_DOWN ||
keyCode == WXK_PAGEUP || keyCode == WXK_PAGEDOWN) {
return;
}
event.Skip();
return;
}
// class MixerTrackCluster
const int kInset = 4;
const int kDoubleInset = (2 * kInset);
const int kTripleInset = (3 * kInset);
const int kQuadrupleInset = (4 * kInset);
const int TRACK_NAME_HEIGHT = 18;
const int MUSICAL_INSTRUMENT_HEIGHT_AND_WIDTH = 48;
const int MUTE_SOLO_HEIGHT = 19;
const int PAN_HEIGHT = 24;
const int kLeftSideStackWidth = MUSICAL_INSTRUMENT_HEIGHT_AND_WIDTH - kDoubleInset; //vvv Change when numbers shown on slider scale.
const int kRightSideStackWidth = MUSICAL_INSTRUMENT_HEIGHT_AND_WIDTH + kDoubleInset;
const int kMixerTrackClusterWidth = kLeftSideStackWidth + kRightSideStackWidth + kQuadrupleInset; // kDoubleInset margin on both sides
enum {
ID_BITMAPBUTTON_MUSICAL_INSTRUMENT = 13000,
ID_SLIDER_PAN,
ID_SLIDER_GAIN,
ID_SLIDER_VELOCITY,
ID_TOGGLEBUTTON_MUTE,
ID_TOGGLEBUTTON_SOLO,
};
BEGIN_EVENT_TABLE(MixerTrackCluster, wxPanelWrapper)
EVT_MOUSE_EVENTS(MixerTrackCluster::OnMouseEvent)
EVT_PAINT(MixerTrackCluster::OnPaint)
EVT_BUTTON(ID_BITMAPBUTTON_MUSICAL_INSTRUMENT, MixerTrackCluster::OnButton_MusicalInstrument)
EVT_SLIDER(ID_SLIDER_PAN, MixerTrackCluster::OnSlider_Pan)
EVT_SLIDER(ID_SLIDER_GAIN, MixerTrackCluster::OnSlider_Gain)
EVT_SLIDER(ID_SLIDER_VELOCITY, MixerTrackCluster::OnSlider_Velocity)
//v EVT_COMMAND_SCROLL(ID_SLIDER_GAIN, MixerTrackCluster::OnSliderScroll_Gain)
EVT_COMMAND(ID_TOGGLEBUTTON_MUTE, wxEVT_COMMAND_BUTTON_CLICKED, MixerTrackCluster::OnButton_Mute)
EVT_COMMAND(ID_TOGGLEBUTTON_SOLO, wxEVT_COMMAND_BUTTON_CLICKED, MixerTrackCluster::OnButton_Solo)
END_EVENT_TABLE()
MixerTrackCluster::MixerTrackCluster(wxWindow* parent,
MixerBoard* grandParent, AudacityProject* project,
PlayableTrack &track,
const wxPoint& pos /*= wxDefaultPosition*/,
const wxSize& size /*= wxDefaultSize*/)
: wxPanelWrapper(parent, -1, pos, size)
, mTrack{ track.SharedPointer<PlayableTrack>() }
{
mMixerBoard = grandParent;
mProject = project;
assert(mTrack);
SetName( Verbatim( mTrack->GetName() ) );
//this->SetBackgroundColour(wxSystemSettings::GetColour(wxSYS_COLOUR_3DFACE));
this->SetBackgroundColour( theTheme.Colour( clrMedium ) );
// Not sure why, but sizers weren't getting offset vertically,
// probably because not using wxDefaultPosition,
// so positions are calculated explicitly below, and sizers code was removed.
// (Still available in Audacity_UmixIt branch off 1.2.6.)
// track name
wxPoint ctrlPos(kDoubleInset, kDoubleInset);
wxSize ctrlSize(size.GetWidth() - kQuadrupleInset, TRACK_NAME_HEIGHT);
mStaticText_TrackName =
safenew auStaticText(this, mTrack->GetName());
//v Useful when different tracks are different colors, but not now.
// mStaticText_TrackName->SetBackgroundColour(this->GetTrackColor());
mStaticText_TrackName->SetForegroundColour(theTheme.Colour(clrMedium));
mStaticText_TrackName->SetForegroundColour(theTheme.Colour(clrTrackPanelText));
mStaticText_TrackName->SetSize( ctrlSize );
mStaticText_TrackName->SetPosition( ctrlPos );
// volume and velocity sliders at left (both in same place)
ctrlPos.x = kDoubleInset;
ctrlPos.y += TRACK_NAME_HEIGHT + kDoubleInset;
const int nGainSliderHeight =
size.GetHeight() - ctrlPos.y - kQuadrupleInset;
ctrlSize.Set(kLeftSideStackWidth - kQuadrupleInset, nGainSliderHeight);
mSlider_Volume =
safenew MixerTrackSlider(
this, ID_SLIDER_GAIN,
/* i18n-hint: title of the Volume slider, used to adjust the volume */
XO("Volume"),
ctrlPos, ctrlSize,
ASlider::Options{}
.Style( DB_SLIDER )
.Orientation( wxVERTICAL ));
mSlider_Volume->SetName(_("Volume"));
mSlider_Velocity =
safenew MixerTrackSlider(
this, ID_SLIDER_VELOCITY,
/* i18n-hint: title of the MIDI Velocity slider */
XO("Velocity"),
ctrlPos, ctrlSize,
ASlider::Options{}
.Style( VEL_SLIDER )
.Orientation( wxVERTICAL ));
mSlider_Velocity->SetName(_("Velocity"));
// other controls and meter at right
// musical instrument image
ctrlPos.x += kLeftSideStackWidth + kInset; // + kInset to center it in right side stack
ctrlSize.Set(MUSICAL_INSTRUMENT_HEIGHT_AND_WIDTH, MUSICAL_INSTRUMENT_HEIGHT_AND_WIDTH);
wxBitmap* bitmap = mMixerBoard->GetMusicalInstrumentBitmap(mTrack.get());
wxASSERT(bitmap);
mBitmapButton_MusicalInstrument =
safenew wxBitmapButton(this, ID_BITMAPBUTTON_MUSICAL_INSTRUMENT, *bitmap,
ctrlPos, ctrlSize,
wxBU_AUTODRAW, wxDefaultValidator,
_("Musical Instrument"));
mBitmapButton_MusicalInstrument->SetName(_("Musical Instrument"));
// pan slider
ctrlPos.x -= kInset; // Remove inset for instrument, so Pan is at leftmost of left side stack.
ctrlPos.y += MUSICAL_INSTRUMENT_HEIGHT_AND_WIDTH + kDoubleInset;
ctrlSize.Set(kRightSideStackWidth, PAN_HEIGHT);
// The width of the pan slider must be odd (don't ask).
if (!(ctrlSize.x & 1))
ctrlSize.x--;
mSlider_Pan =
safenew MixerTrackSlider(
this, ID_SLIDER_PAN,
/* i18n-hint: Title of the Pan slider, used to move the sound left or right */
XO("Pan"),
ctrlPos, ctrlSize,
ASlider::Options{}.Style( PAN_SLIDER ));
mSlider_Pan->SetName(_("Pan"));
// mute/solo buttons stacked below Pan slider
ctrlPos.y += PAN_HEIGHT + kDoubleInset;
ctrlSize.Set(mMixerBoard->mMuteSoloWidth, MUTE_SOLO_HEIGHT);
mToggleButton_Mute =
safenew AButton(this, ID_TOGGLEBUTTON_MUTE,
ctrlPos, ctrlSize,
*(mMixerBoard->mImageMuteUp), *(mMixerBoard->mImageMuteOver),
*(mMixerBoard->mImageMuteDown), *(mMixerBoard->mImageMuteDown),
*(mMixerBoard->mImageMuteDisabled),
true); // toggle button
mToggleButton_Mute->SetName(_("Mute"));
mToggleButton_Mute->SetAlternateImages(
1,
*(mMixerBoard->mImageMuteUp), *(mMixerBoard->mImageMuteOver),
*(mMixerBoard->mImageMuteDown), *(mMixerBoard->mImageMuteDown),
*(mMixerBoard->mImageMuteDisabled));
ctrlPos.y += MUTE_SOLO_HEIGHT;
mToggleButton_Solo =
safenew AButton(this, ID_TOGGLEBUTTON_SOLO,
ctrlPos, ctrlSize,
*(mMixerBoard->mImageSoloUp), *(mMixerBoard->mImageSoloOver),
*(mMixerBoard->mImageSoloDown), *(mMixerBoard->mImageSoloDown),
*(mMixerBoard->mImageSoloDisabled),
true); // toggle button
mToggleButton_Solo->SetName(_("Solo"));
// meter
ctrlPos.y += MUTE_SOLO_HEIGHT + kDoubleInset;
const int nMeterHeight =
nGainSliderHeight -
(MUSICAL_INSTRUMENT_HEIGHT_AND_WIDTH + kDoubleInset) -
(PAN_HEIGHT + kDoubleInset) -
(MUTE_SOLO_HEIGHT + MUTE_SOLO_HEIGHT + kDoubleInset);
ctrlSize.Set(kRightSideStackWidth, nMeterHeight);
mMeter.Release();
if (GetWave()) {
mMeter =
safenew MeterPanel(mProject, // AudacityProject* project,
this, -1, // wxWindow* parent, wxWindowID id,
false, // bool isInput
ctrlPos, ctrlSize, // const wxPoint& pos = wxDefaultPosition, const wxSize& size = wxDefaultSize,
MeterPanel::MixerTrackCluster); // Style style = HorizontalStereo,
mMeter->SetName(XO("Signal Level Meter"));
}
#if wxUSE_TOOLTIPS
mStaticText_TrackName->SetToolTip(mTrack->GetName());
mToggleButton_Mute->SetToolTip(XO("Mute"));
mToggleButton_Solo->SetToolTip(XO("Solo"));
if (GetWave())
mMeter->SetToolTip(XO("Signal Level Meter"));
#endif // wxUSE_TOOLTIPS
UpdateForStateChange();
#ifdef __WXMAC__
wxSizeEvent event(GetSize(), GetId());
event.SetEventObject(this);
GetEventHandler()->ProcessEvent(event);
#endif
}
WaveTrack *MixerTrackCluster::GetWave() const
{
return dynamic_cast< WaveTrack * >( mTrack.get() );
}
WaveChannel *MixerTrackCluster::GetRight() const
{
// TODO: more-than-two-channels
auto left = GetWave();
if (left) {
auto channels = left->Channels();
if (channels.size() > 1)
return (* ++ channels.first).get();
}
return nullptr;
}
NoteTrack *MixerTrackCluster::GetNote() const
{
return dynamic_cast< NoteTrack * >( mTrack.get() );
}
// Old approach modified things in situ.
// However with a theme change there is so much to modify, it is easier
// to recreate.
#if 0
void MixerTrackCluster::UpdatePrefs()
{
this->SetBackgroundColour( theTheme.Colour( clrMedium ) );
mStaticText_TrackName->SetForegroundColour(theTheme.Colour(clrTrackPanelText));
HandleResize(); // in case TracksBehaviorsSolo changed
}
#endif
void MixerTrackCluster::HandleResize() // For wxSizeEvents, update volume slider and meter.
{
wxSize scrolledWindowClientSize = this->GetParent()->GetClientSize();
const int newClusterHeight =
scrolledWindowClientSize.GetHeight() - kDoubleInset - // nClusterHeight from MixerBoard::UpdateTrackClusters
wxSystemSettings::GetMetric(wxSYS_HSCROLL_Y) + // wxScrolledWindow::GetClientSize doesn't account for its scrollbar size.
kDoubleInset;
this->SetSize(-1, newClusterHeight);
// Change only the heights of mSlider_Volume and mMeter.
// But update shown status of mToggleButton_Solo, which affects top of mMeter.
const int nGainSliderHeight =
newClusterHeight -
(kInset + // margin above mStaticText_TrackName
TRACK_NAME_HEIGHT + kDoubleInset) - // mStaticText_TrackName + margin
kQuadrupleInset; // margin below volume slider
mSlider_Volume->SetSize(-1, nGainSliderHeight);
mSlider_Velocity->SetSize(-1, nGainSliderHeight);
const int nRequiredHeightAboveMeter =
MUSICAL_INSTRUMENT_HEIGHT_AND_WIDTH + kDoubleInset +
PAN_HEIGHT + kDoubleInset +
MUTE_SOLO_HEIGHT + MUTE_SOLO_HEIGHT + kDoubleInset;
const int nMeterY =
kDoubleInset + // margin at top
TRACK_NAME_HEIGHT + kDoubleInset +
nRequiredHeightAboveMeter;
const int nMeterHeight = nGainSliderHeight - nRequiredHeightAboveMeter;
if (mMeter)
mMeter->SetSize(-1, nMeterY, -1, nMeterHeight);
}
void MixerTrackCluster::HandleSliderGain(const bool bWantPushState /*= false*/)
{
float fValue = mSlider_Volume->Get();
if (GetWave())
GetWave()->SetVolume(fValue);
// Update the TrackPanel correspondingly.
TrackPanel::Get( *mProject ).RefreshTrack(mTrack.get());
if (bWantPushState)
ProjectHistory::Get( *mProject )
.PushState(XO("Moved volume slider"), XO("Volume"), UndoPush::CONSOLIDATE );
}
void MixerTrackCluster::HandleSliderVelocity(const bool bWantPushState /*= false*/)
{
float fValue = mSlider_Velocity->Get();
if (GetNote())
GetNote()->SetVelocity(fValue);
// Update the TrackPanel correspondingly.
TrackPanel::Get( *mProject ).RefreshTrack(mTrack.get());
if (bWantPushState)
ProjectHistory::Get( *mProject )
.PushState(XO("Moved velocity slider"), XO("Velocity"),
UndoPush::CONSOLIDATE);
}
void MixerTrackCluster::HandleSliderPan(const bool bWantPushState /*= false*/)
{
float fValue = mSlider_Pan->Get();
if (GetWave()) // test in case track is a NoteTrack
GetWave()->SetPan(fValue);
// Update the TrackPanel correspondingly.
TrackPanel::Get( *mProject ).RefreshTrack(mTrack.get());
if (bWantPushState)
ProjectHistory::Get( *mProject )
.PushState(XO("Moved pan slider"), XO("Pan"),
UndoPush::CONSOLIDATE );
}
void MixerTrackCluster::ResetMeter(const bool bResetClipping)
{
if (mMeter)
mMeter->Reset(GetWave()->GetRate(), bResetClipping);
// Release view to allow cache eviction after/before playback.
mSampleView.clear();
}
// Update appearance to match the state of the track
void MixerTrackCluster::UpdateForStateChange()
{
const wxString newName = mTrack->GetName();
if (newName != GetName()) {
SetName( Verbatim( newName ) );
mStaticText_TrackName->SetLabel(newName);
mStaticText_TrackName->SetName(newName);
#if wxUSE_TOOLTIPS
mStaticText_TrackName->SetToolTip(newName);
#endif
mBitmapButton_MusicalInstrument->SetBitmapLabel(
*(mMixerBoard->GetMusicalInstrumentBitmap(mTrack.get())));
}
mToggleButton_Mute->SetAlternateIdx(mTrack->GetSolo() ? 1 : 0);
if (mTrack->GetMute())
mToggleButton_Mute->PushDown();
else
mToggleButton_Mute->PopUp();
bool bIsSolo = mTrack->GetSolo();
if (bIsSolo)
mToggleButton_Solo->PushDown();
else
mToggleButton_Solo->PopUp();
mToggleButton_Mute->SetAlternateIdx(bIsSolo ? 1 : 0);
if (!GetWave())
mSlider_Pan->Hide();
else
mSlider_Pan->Set(GetWave()->GetPan());
if (!GetWave())
mSlider_Volume->Hide();
else
mSlider_Volume->Set(GetWave()->GetVolume());
if (!GetNote())
mSlider_Velocity->Hide();
else
mSlider_Velocity->Set(GetNote()->GetVelocity());
}
namespace {
size_t GetNumSamplesInView(const ChannelSampleView& view)
{
return std::accumulate(
view.begin(), view.end(), 0,
[](size_t total, const AudioSegmentSampleView& segmentView) {
return total + segmentView.GetSampleCount();
});
}
// Assumes that buffer has capacity >= GetNumSamplesInView(view)
void FillBufferWithSampleView(float* buffer, const ChannelSampleView& view)
{
size_t copiedSamples = 0;
for (const auto& segmentView : view)
{
const auto sampleCount = segmentView.GetSampleCount();
segmentView.Copy(buffer + copiedSamples, sampleCount);
copiedSamples += sampleCount;
}
}
}
void MixerTrackCluster::UpdateMeter(const double t0, const double t1)
{
// NoteTracks do not (currently) register on meters. It would probably be
// a good idea to display 16 channel "active" lights rather than a meter
if (!GetWave())
return;
if ((t0 < 0.0) || (t1 < 0.0) || (t0 >= t1) || // bad time value or nothing to show
((mMixerBoard->HasSolo() || mTrack->GetMute()) && !mTrack->GetSolo())
)
{
//v Vaughan, 2011-02-25: Moved the update back to TrackPanel::OnTimer() as it helps with
// playback issues reported by Bill and noted on Bug 258, so no assert.
// Vaughan, 2011-02-04: Now that we're updating all meters from audacityAudioCallback,
// this causes an assert if you click Mute while playing, because ResetMeter() resets
// the timer, and wxTimerbase says that can only be done from main thread --
// but it seems to work fine.
this->ResetMeter(false);
return;
}
// Vaughan, 2010-11-27:
// This commented out code is flawed. Mistaken understanding of "frame" vs "window".
// Caused me to override MeterPanel::UpdateDisplay().
// But I think it's got a good idea, of calling WaveTracks' GetMinMax and GetRMS
// instead of passing in all the data and asking the meter to derive peak and rms.
// May be worth revisiting as I think it should perform better, because it uses the min/max/rms
// stored in sample blocks, rather than calculating them, but for now, changing it to use the
// original MeterPanel::UpdateDisplay(). New code is below the previous (now commented out).
//
//const size_t kFramesPerBuffer = 4;
//float min; // dummy, since it's not shown in meters
//Floats maxLeft{kFramesPerBuffer};
//Floats rmsLeft{kFramesPerBuffer};
//Floats maxRight{kFramesPerBuffer};
//Floats rmsRight{kFramesPerBuffer};
//
// bool bSuccess = (GetWave() != nullptr);
//const double dFrameInterval = (t1 - t0) / (double)kFramesPerBuffer;
//double dFrameT0 = t0;
//double dFrameT1 = t0 + dFrameInterval;
//int i = 0;
//while (bSuccess && (i < kFramesPerBuffer))
//{
// bSuccess &=
// mTrack->GetMinMax(&min, &(maxLeft[i]), dFrameT0, dFrameT1) &&
// mTrack->GetRMS(&(rmsLeft[i]), dFrameT0, dFrameT1);
// if (bSuccess && mRightTrack)
// bSuccess &=
// mRightTrack->GetMinMax(&min, &(maxRight[i]), dFrameT0, dFrameT1) &&
// mRightTrack->GetRMS(&(rmsRight[i]), dFrameT0, dFrameT1);
// else
// {
// // Mono: Start with raw values same as left.
// // To be modified by bWantPostFadeValues and channel pan/gain.
// maxRight[i] = maxLeft[i];
// rmsRight[i] = rmsLeft[i];
// }
// dFrameT0 += dFrameInterval;
// dFrameT1 += dFrameInterval;
// i++;
//}
//
//const bool bWantPostFadeValues = true; //v Turn this into a checkbox on MixerBoard? For now, always true.
//if (bSuccess && bWantPostFadeValues)
//if (bSuccess)
//{
// for (i = 0; i < kFramesPerBuffer; i++)
// {
// float gain = mTrack->GetChannelVolume(0);
// maxLeft[i] *= gain;
// rmsLeft[i] *= gain;
// if (mRightTrack)
// gain = mRightTrack->GetChannelVolume(1);
// maxRight[i] *= gain;
// rmsRight[i] *= gain;
// }
// if ( mMeter ) mMeter->UpdateDisplay(
// 2, // If mono, show left track values in both meters, as in MeterToolBar, rather than nChannels.
// kFramesPerBuffer,
// maxLeft, rmsLeft,
// maxRight, rmsRight,
// mTrack->TimeToLongSamples(t1 - t0));
//}
//
// PRL: TODO: don't fetch from wave tracks at calculated times, for update
// of the meter display, but instead consult PlaybackPolicy
const auto pTrack = GetWave();
// Don't throw on read error in this drawing update routine
constexpr auto mayThrow = false;
// Not sure how to prove satisfaction of the invariant of GetSampleView
mSampleView = pTrack->GetSampleView(t0, t1, mayThrow);
// Expect that the difference of t1 and t0 is the part of a track played
// in about 1/20 second (ticks of TrackPanel timer), so this won't overflow,
// unless stretch ratio is extremely low.
const auto nFrames = GetNumSamplesInView(mSampleView[0]);
Floats tempFloatsArray;
try {
tempFloatsArray.reinit(nFrames);
}
catch (const std::bad_alloc&) {
// Just in case we did not satisfy GetSampleView and computed a bogus
// size_t value
return;
}
FillBufferWithSampleView(tempFloatsArray.get(), mSampleView[0]);
decltype(tempFloatsArray) meterFloatsArray;
// We always pass a stereo sample array to the meter, as it shows 2 channels.
// Mono shows same in both meters.
// Since we're not mixing, need to duplicate same signal for "right" channel in mono case.
try {
meterFloatsArray.reinit(2 * nFrames );
}
catch (const std::bad_alloc&) {
// Just in case we did not satisfy GetSampleView and computed a bogus
// size_t value
return;
}
// Interleave for stereo. Left/mono first.
for (unsigned int index = 0; index < nFrames; index++)
meterFloatsArray[2 * index] = tempFloatsArray[index];
if (mSampleView.size() > 1u)
FillBufferWithSampleView(tempFloatsArray.get(), mSampleView[1]);
// Interleave right channel, or duplicate same signal for "right" channel in mono case.
for (unsigned int index = 0; index < nFrames; index++)
meterFloatsArray[(2 * index) + 1] = tempFloatsArray[index];
//const bool bWantPostFadeValues = true; //v Turn this into a checkbox on MixerBoard? For now, always true.
//if (bSuccess && bWantPostFadeValues)
//vvv Need to apply envelope, too? See Mixer::MixSameRate.
float volume = pTrack->GetChannelVolume(0);
for (unsigned int index = 0; index < nFrames; index++)
meterFloatsArray[2 * index] *= volume;
volume = pTrack->GetChannelVolume(1);
for (unsigned int index = 0; index < nFrames; index++)
meterFloatsArray[(2 * index) + 1] *= volume;
// Clip to [-1.0, 1.0] range.
for (unsigned int index = 0; index < 2 * nFrames; index++)
if (meterFloatsArray[index] < -1.0)
meterFloatsArray[index] = -1.0;
else if (meterFloatsArray[index] > 1.0)
meterFloatsArray[index] = 1.0;
if (mMeter)
mMeter->UpdateDisplay(2, nFrames, meterFloatsArray.get());
}
// private
wxColour MixerTrackCluster::GetTrackColor()
{
return wxColour(102, 255, 102); // same as Meter playback color
}
// event handlers
void MixerTrackCluster::HandleSelect(bool bShiftDown, bool bControlDown)
{
SelectUtilities::DoListSelection(*mProject,
*mTrack, bShiftDown, bControlDown, true);
}
void MixerTrackCluster::OnMouseEvent(wxMouseEvent& event)
{
if (event.ButtonUp())
this->HandleSelect(event.ShiftDown(), event.ControlDown());
else
event.Skip();
}
void MixerTrackCluster::OnPaint(wxPaintEvent & WXUNUSED(event))
{
UpdateForStateChange();
auto selected = mTrack->GetSelected();
wxColour col = theTheme.Colour(selected ? clrTrackInfoSelected : clrTrackInfo) ;
SetBackgroundColour( col );
if (mMeter)
mMeter->SetBackgroundColour( col );
mStaticText_TrackName->SetBackgroundColour( col );
mSlider_Volume->SetBackgroundColour( col );
mSlider_Pan->SetBackgroundColour( col );
wxPaintDC dc(this);
AColor::MediumTrackInfo(&dc, selected);
dc.DrawRectangle(this->GetClientRect());
wxSize clusterSize = this->GetSize();
wxRect bev(0, 0, clusterSize.GetWidth() - 1, clusterSize.GetHeight() - 1);
//bev.Inflate(-1, -1);
AColor::Bevel(dc, true, bev);// same bevel whether selected or not.
}
void MixerTrackCluster::OnButton_MusicalInstrument(wxCommandEvent& WXUNUSED(event))
{
const auto &state = ::wxGetMouseState();
this->HandleSelect(state.ShiftDown(), state.ControlDown());
}
void MixerTrackCluster::OnSlider_Gain(wxCommandEvent& WXUNUSED(event))
{
this->HandleSliderGain();
}
void MixerTrackCluster::OnSlider_Velocity(wxCommandEvent& WXUNUSED(event))
{
this->HandleSliderVelocity();
}
void MixerTrackCluster::OnSlider_Pan(wxCommandEvent& WXUNUSED(event))
{
this->HandleSliderPan();
}
void MixerTrackCluster::OnButton_Mute(wxCommandEvent& WXUNUSED(event))
{
TrackUtilities::DoTrackMute(
*mProject, *mTrack, mToggleButton_Mute->WasShiftDown());
mToggleButton_Mute->SetAlternateIdx(mTrack->GetSolo() ? 1 : 0);
// Update the TrackPanel correspondingly.
if (TracksBehaviorsSolo.ReadEnum() == SoloBehaviorSimple)
Viewport::Get(*mProject).Redraw();
else
// Update only the changed track.
TrackPanel::Get( *mProject ).RefreshTrack(mTrack.get());
}
void MixerTrackCluster::OnButton_Solo(wxCommandEvent& WXUNUSED(event))
{
TrackUtilities::DoTrackSolo(
*mProject, *mTrack, mToggleButton_Solo->WasShiftDown());
bool bIsSolo = mTrack->GetSolo();
mToggleButton_Mute->SetAlternateIdx(bIsSolo ? 1 : 0);
// Update the TrackPanel correspondingly.
// Bug 509: Must repaint all, as many tracks can change with one Solo change.
Viewport::Get(*mProject).Redraw();
}
// class MusicalInstrument
MusicalInstrument::MusicalInstrument(std::unique_ptr<wxBitmap> &&pBitmap, const wxString & strXPMfilename)
{
mBitmap = std::move(pBitmap);
int nUnderscoreIndex;
wxString strFilename = strXPMfilename;
strFilename.MakeLower(); // Make sure, so we don't have to do case insensitive comparison.
wxString strKeyword;
while ((nUnderscoreIndex = strFilename.Find(wxT('_'))) != -1)
{
strKeyword = strFilename.Left(nUnderscoreIndex);
mKeywords.push_back(strKeyword);
strFilename = strFilename.Mid(nUnderscoreIndex + 1);
}
if (!strFilename.empty()) // Skip trailing underscores.
mKeywords.push_back(strFilename); // Add the last one.
}
MusicalInstrument::~MusicalInstrument()
{
mKeywords.clear();
}
// class MixerBoardScrolledWindow
// wxScrolledWindow ignores mouse clicks in client area,
// but they don't get passed to Mixerboard.
// We need to catch them to deselect all track clusters.
BEGIN_EVENT_TABLE(MixerBoardScrolledWindow, wxScrolledWindow)
EVT_MOUSE_EVENTS(MixerBoardScrolledWindow::OnMouseEvent)
END_EVENT_TABLE()
MixerBoardScrolledWindow::MixerBoardScrolledWindow(AudacityProject* project,
MixerBoard* parent, wxWindowID id /*= -1*/,
const wxPoint& pos /*= wxDefaultPosition*/,
const wxSize& size /*= wxDefaultSize*/,
long style /*= wxHSCROLL | wxVSCROLL*/)
: wxScrolledWindow(parent, id, pos, size, style)
{
mMixerBoard = parent;
mProject = project;
}
MixerBoardScrolledWindow::~MixerBoardScrolledWindow()
{
}
void MixerBoardScrolledWindow::OnMouseEvent(wxMouseEvent& event)
{
if (event.ButtonUp())
{
//v Even when I implement MixerBoard::OnMouseEvent and call event.Skip()
// here, MixerBoard::OnMouseEvent never gets called.
// So, added mProject to MixerBoardScrolledWindow and just directly do what's needed here.
SelectUtilities::SelectNone( *mProject );
}
else
event.Skip();
}
// class MixerBoard
#define MIXER_BOARD_MIN_HEIGHT 460
// Min width is one cluster wide, plus margins.
#define MIXER_BOARD_MIN_WIDTH kTripleInset + kMixerTrackClusterWidth*2 + kTripleInset
BEGIN_EVENT_TABLE(MixerBoard, wxWindow)
EVT_PAINT(MixerBoard::OnPaint)
EVT_SIZE(MixerBoard::OnSize)
END_EVENT_TABLE()
MixerBoard::MixerBoard(AudacityProject* pProject,
wxFrame* parent,
const wxPoint& pos /*= wxDefaultPosition*/,
const wxSize& size /*= wxDefaultSize*/)
: wxWindow(parent, -1, pos, size)
{
// public data members
// mute & solo button images
// Create once and store on MixerBoard for use in all MixerTrackClusters.
mImageMuteUp = NULL;
mImageMuteOver = NULL;
mImageMuteDown = NULL;
mImageMuteDownWhileSolo = NULL;
mImageMuteDisabled = NULL;
mImageSoloUp = NULL;
mImageSoloOver = NULL;
mImageSoloDown = NULL;
mImageSoloDisabled = NULL;
mMuteSoloWidth = kRightSideStackWidth - kInset; // correct for max width, but really set in MixerBoard::CreateMuteSoloImages
// private data members
this->LoadMusicalInstruments(); // Set up mMusicalInstruments.
mProject = pProject;
wxASSERT(pProject); // to justify safenew
mScrolledWindow =
safenew MixerBoardScrolledWindow(
pProject, // AudacityProject* project,
this, -1, // wxWindow* parent, wxWindowID id = -1,
this->GetClientAreaOrigin(), // const wxPoint& pos = wxDefaultPosition,
size, // const wxSize& size = wxDefaultSize,
wxHSCROLL); // long style = wxHSCROLL | wxVSCROLL, const wxString& name = "scrolledWindow")
// Set background color to same as TrackPanel background.
// mScrolledWindow->SetBackgroundColour(this->GetParent()->GetBackgroundColour());
mScrolledWindow->SetBackgroundColour( theTheme.Colour( clrMedium ) );
RTL_WORKAROUND(mScrolledWindow);
mScrolledWindow->SetScrollRate(10, 0); // no vertical scroll
mScrolledWindow->SetVirtualSize(size);
/* This doesn't work to make the mScrolledWindow automatically resize, so do it explicitly in OnSize.
auto pBoxSizer = std::make_unique<wxBoxSizer>(wxVERTICAL);
pBoxSizer->push_back(mScrolledWindow, 0, wxExpand, 0);
this->SetAutoLayout(true);
this->SetSizer(pBoxSizer);
pBoxSizer->Fit(this);
pBoxSizer->SetSizeHints(this);
*/
mPrevT1 = 0.0;
mTracks = &TrackList::Get( *mProject );
// Events from the project don't propagate directly to this other frame, so...
mPlaybackScrollerSubscription =
ProjectWindow::Get( *mProject ).GetPlaybackScroller()
.Subscribe(*this, &MixerBoard::OnTimer);
mTrackPanelSubscription =
PendingTracks::Get(*mProject).Subscribe([this](const TrackListEvent &event){
switch (event.mType) {
case TrackListEvent::SELECTION_CHANGE:
case TrackListEvent::TRACK_DATA_CHANGE:
OnTrackChanged(event); break;
case TrackListEvent::PERMUTED:
case TrackListEvent::ADDITION:
case TrackListEvent::DELETION:
OnTrackSetChanged(); break;
default:
break;
}
});
mAudioIOSubscription =
AudioIO::Get()->Subscribe(*this, &MixerBoard::OnStartStop);
}
void MixerBoard::UpdatePrefs()
{
// Destroys this:
static_cast<MixerBoardFrame*>(GetParent())->Recreate( mProject );
// Old approach modified things in situ.
// However with a theme change there is so much to modify, it is easier
// to recreate.
#if 0
mScrolledWindow->SetBackgroundColour( theTheme.Colour( clrMedium ) );
if( mImageMuteUp ){
mImageMuteUp.reset();
mImageMuteOver.reset();
mImageMuteDown.reset();
mImageMuteDownWhileSolo.reset();
mImageMuteDisabled.reset();
mImageSoloUp.reset();
mImageSoloOver.reset();
mImageSoloDown.reset();
mImageSoloDisabled.reset();
}
for (unsigned int nClusterIndex = 0; nClusterIndex < mMixerTrackClusters.size(); nClusterIndex++)
mMixerTrackClusters[nClusterIndex]->UpdatePrefs();
Refresh();
#endif
}
// Reassign mixer input strips (MixerTrackClusters) to Track Clusters
// both have the same order.
// Note Tracks appear in the mixer,
// and we must be able to convert and reuse a MixerTrackCluster
// from audio to midi or midi to audio. This task is handled by
// UpdateForStateChange().
//
void MixerBoard::UpdateTrackClusters()
{
if (!mImageMuteUp)
this->CreateMuteSoloImages();
const int nClusterHeight = mScrolledWindow->GetClientSize().GetHeight() - kDoubleInset;
size_t nClusterCount = mMixerTrackClusters.size();
unsigned int nClusterIndex = 0;
MixerTrackCluster* pMixerTrackCluster = NULL;
for (auto pPlayableTrack: mTracks->Any<PlayableTrack>()) {
// TODO: more-than-two-channels
auto spTrack = pPlayableTrack->SharedPointer<PlayableTrack>();
// Track iterations always yield non-null pointers; maintain invariant
// when reassigning
assert(spTrack);
if (nClusterIndex < nClusterCount)
{
// Already showing it.
// Track clusters are maintained in the same order as the WaveTracks.
// Track pointers can change for the "same" track for different states
// on the undo stack, so update the pointers and display name.
mMixerTrackClusters[nClusterIndex]->mTrack = spTrack;
// Assume linked track is wave or null
mMixerTrackClusters[nClusterIndex]->UpdateForStateChange();
}
else
{
// Not already showing it. Add a NEW MixerTrackCluster.
wxPoint clusterPos(
kInset + nClusterIndex * kMixerTrackClusterWidth,