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Change procedure to choose append-record tracks once again...

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... Allow recording stereo into non-adjacent mono tracks, if they are selected.

Prefer the earliest-starting set of tracks in the track list, among either
selected tracks, or else among all tracks.

Therefore if selection contains a mono, a stereo, and a mono in that order,
the two monos may be chosen to record new stereo.
This commit is contained in:
Paul Licameli 2018-04-09 22:00:41 -04:00
parent 473a92d28f
commit bbcd924371
1 changed files with 47 additions and 27 deletions
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74
src/toolbars/ControlToolBar.cpp
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@ -1023,12 +1023,11 @@ void ControlToolBar::OnRecord(wxCommandEvent &evt)
double allt0 = t0;
using Candidates = std::vector<WaveTrack*>;
Candidates candidates, selectedCandidates;
auto addCandidates = [&](Candidates &candidates, WaveTrack *candidate){
if (candidates.size() == recordingChannels)
// nothing left to do
return;
Candidates *candidates{};
Candidates greedy, best;
Candidates selectedGreedy, selectedBest;
auto addCandidates = [&](Candidates &greedy, Candidates &best,
WaveTrack *candidate){
if (candidate->GetLink() && !candidate->GetLinked())
return;
@ -1042,18 +1041,25 @@ void ControlToolBar::OnRecord(wxCommandEvent &evt)
? static_cast<WaveTrack*>(channel->GetLink()) : nullptr)
++nChannels;
// Accumulate consecutive single channel tracks, or else one track of
// the exact number of channels
if (nChannels > 1)
candidates.clear();
// Greedy looks either for a single best-fit or for enough mono
// channels, even if we choose more
// than one and they are not successive, but this partially accumulated
// result might not become complete
if (greedy.size() + nChannels <= recordingChannels &&
( nChannels == 1 || nChannels == recordingChannels )) {
for (auto channel = candidate; channel;
channel = channel->GetLinked()
? static_cast<WaveTrack*>(channel->GetLink()) : nullptr)
greedy.push_back(channel);
}
if (nChannels == 1 || // <- comment this out to disallow recording
// stereo into two adjacent mono tracks
// Best-fit looks for the exact number of channels in one place
if (best.empty() &&
nChannels == recordingChannels) {
for (auto channel = candidate; channel;
channel = channel->GetLinked()
? static_cast<WaveTrack*>(channel->GetLink()) : nullptr)
candidates.push_back(channel);
best.push_back(channel);
}
};
if (appendRecord) {
@ -1068,9 +1074,9 @@ void ControlToolBar::OnRecord(wxCommandEvent &evt)
if (wt->GetEndTime() > allt0) {
allt0 = wt->GetEndTime();
}
addCandidates( candidates, wt );
addCandidates( greedy, best, wt );
if (wt->GetSelected())
addCandidates( selectedCandidates, wt );
addCandidates( selectedGreedy, selectedBest, wt );
if (wt->GetSelected()) {
if (wt->GetEndTime() > t0) {
t0 = wt->GetEndTime();
@ -1079,26 +1085,40 @@ void ControlToolBar::OnRecord(wxCommandEvent &evt)
}
}
// candidate null implies selectedCandidate also null
if( candidates.empty() )
// Which tracks will be appended?
// First, prefer selected to non-selected if we can. Then,
// if enough were found the "greedy" way, and they may begin earlier
// in the track list than the "best," prefer them
if (selectedGreedy.size() == recordingChannels)
candidates = &selectedGreedy;
else if (!selectedBest.empty())
candidates = &selectedBest;
if (!candidates) {
// if (greedy.size() == recordingChannels)
// candidates = &greedy;
// else
if (!best.empty())
candidates = &best;
if (candidates) {
// t0 is now: max(selection-start, end-of-selected-wavetracks)
// allt0 is: max(selection-start, end-of-all-tracks)
// Use end time of all wave tracks if none selected
t0 = allt0;
}
}
if( !candidates )
appendRecord = false;
}
if (appendRecord) {
// t0 is now: max(selection-start, end-of-selected-wavetracks)
// allt0 is: max(selection-start, end-of-all-tracks)
// Use end time of all wave tracks if none selected
if (selectedCandidates.empty()) {
t0 = allt0;
}
// Append recording:
// Pad selected/all wave tracks to make them all the same length
// Remove recording tracks from the list of tracks for duplex ("overdub")
// playback.
for (auto channel :
selectedCandidates.empty() ? candidates : selectedCandidates)
for (auto channel : *candidates)
{
auto wt = Track::Pointer<WaveTrack>(channel);