int TrackList::GetNumExportChannels(bool selectionOnly)
{
/* counters for tracks panned different places */
int numLeft = 0;
int numRight = 0;
int numMono = 0;
/* track iteration kit */
Track *tr;
TrackListIterator iter;
for (tr = iter.First(this); tr != NULL; tr = iter.Next()) {
// Want only unmuted wave tracks.
if ((tr->GetKind() != Track::Wave) || tr->GetMute())
continue;
// do we only want selected ones?
if (selectionOnly && !(tr->GetSelected())) {
//want selected but this one is not
continue;
}
// Found a left channel
if (tr->GetChannel() == Track::LeftChannel) {
numLeft++;
}
// Found a right channel
else if (tr->GetChannel() == Track::RightChannel) {
numRight++;
}
// Found a mono channel, but it may be panned
else if (tr->GetChannel() == Track::MonoChannel) {
float pan = ((WaveTrack*)tr)->GetPan();
// Figure out what kind of channel it should be
if (pan == -1.0) { // panned hard left
numLeft++;
}
else if (pan == 1.0) { // panned hard right
numRight++;
}
else if (pan == 0) { // panned dead center
numMono++;
}
else { // panned somewhere else
numLeft++;
numRight++;
}
}
}
// if there is stereo content, report 2, else report 1
if (numRight > 0 || numLeft > 0) {
return 2;
}
return 1;
}
bool Track::LinkConsistencyCheck()
{
// Sanity checks for linked tracks; unsetting the linked property
// doesn't fix the problem, but it likely leaves us with orphaned
// blockfiles instead of much worse problems.
bool err = false;
if (GetLinked())
{
Track *l = GetLink();
if (l)
{
// A linked track's partner should never itself be linked
if (l->GetLinked())
{
wxLogWarning(
wxT("Left track %s had linked right track %s with extra right track link.\n Removing extra link from right track."),
GetName(), l->GetName());
err = true;
l->SetLinked(false);
}
// Channels should be left and right
if ( !( (GetChannel() == Track::LeftChannel &&
l->GetChannel() == Track::RightChannel) ||
(GetChannel() == Track::RightChannel &&
l->GetChannel() == Track::LeftChannel) ) )
{
wxLogWarning(
wxT("Track %s and %s had left/right track links out of order. Setting tracks to not be linked."),
GetName(), l->GetName());
err = true;
SetLinked(false);
}
}
else
{
wxLogWarning(
wxT("Track %s had link to NULL track. Setting it to not be linked."),
GetName());
err = true;
SetLinked(false);
}
}
return ! err;
}
bool MixAndRender(TrackList *tracks, TrackFactory *trackFactory,
double rate, sampleFormat format,
double startTime, double endTime,
WaveTrack **newLeft, WaveTrack **newRight)
{
// This function was formerly known as "Quick Mix". It takes one or
// more tracks as input; of all tracks that are selected, it mixes
// them together, applying any envelopes, amplitude gain, panning,
// and real-time effects in the process. The resulting pair of
// tracks (stereo) are "rendered" and have no effects, gain, panning,
// or envelopes.
WaveTrack **waveArray;
Track *t;
int numWaves = 0;
int numMono = 0;
bool mono = false;
int w;
TrackListIterator iter(tracks);
t = iter.First();
while (t) {
if (t->GetSelected() && t->GetKind() == Track::Wave) {
numWaves++;
float pan = ((WaveTrack*)t)->GetPan();
if (t->GetChannel() == Track::MonoChannel && pan == 0)
numMono++;
}
t = iter.Next();
}
if (numMono == numWaves)
mono = true;
double totalTime = 0.0;
waveArray = new WaveTrack *[numWaves];
w = 0;
t = iter.First();
while (t) {
if (t->GetSelected() && t->GetKind() == Track::Wave) {
waveArray[w++] = (WaveTrack *) t;
if (t->GetEndTime() > totalTime)
totalTime = t->GetEndTime();
}
t = iter.Next();
}
WaveTrack *mixLeft = trackFactory->NewWaveTrack(format, rate);
mixLeft->SetName(_("Mix"));
WaveTrack *mixRight = 0;
if (mono) {
mixLeft->SetChannel(Track::MonoChannel);
}
else {
mixRight = trackFactory->NewWaveTrack(format, rate);
mixRight->SetName(_("Mix"));
mixLeft->SetChannel(Track::LeftChannel);
mixRight->SetChannel(Track::RightChannel);
mixLeft->SetLinked(true);
mixRight->SetTeamed(true);
}
int maxBlockLen = mixLeft->GetIdealBlockSize();
if (startTime == endTime) {
startTime = 0.0;
endTime = totalTime;
}
Mixer *mixer = new Mixer(numWaves, waveArray, tracks->GetTimeTrack(),
startTime, endTime, mono ? 1 : 2, maxBlockLen, false,
rate, format);
wxYield();
GetActiveProject()->ProgressShow(_NoAcc("&Mix and Render"),
_("Mixing and rendering tracks"));
wxBusyCursor busy;
bool cancelling = false;
while(!cancelling) {
sampleCount blockLen = mixer->Process(maxBlockLen);
if (blockLen == 0)
break;
if (mono) {
samplePtr buffer = mixer->GetBuffer();
mixLeft->Append(buffer, format, blockLen);
}
else {
samplePtr buffer;
buffer = mixer->GetBuffer(0);
mixLeft->Append(buffer, format, blockLen);
buffer = mixer->GetBuffer(1);
mixRight->Append(buffer, format, blockLen);
}
int progressvalue = int (1000 * (mixer->MixGetCurrentTime() / totalTime));
cancelling = !GetActiveProject()->ProgressUpdate(progressvalue);
}
GetActiveProject()->ProgressHide();
mixLeft->Flush();
*newLeft = mixLeft;
if (!mono) {
mixRight->Flush();
*newRight = mixRight;
}
#if 0
int elapsedMS = wxGetElapsedTime();
double elapsedTime = elapsedMS * 0.001;
double maxTracks = totalTime / (elapsedTime / numWaves);
// Note: these shouldn't be translated - they're for debugging
// and profiling only.
printf(" Tracks: %d\n", numWaves);
printf(" Mix length: %f sec\n", totalTime);
printf("Elapsed time: %f sec\n", elapsedTime);
printf("Max number of tracks to mix in real time: %f\n", maxTracks);
#endif
delete[] waveArray;
delete mixer;
return true;
}
ExportMixerDialog::ExportMixerDialog( TrackList *tracks, bool selectionOnly,
int maxNumChannels, wxWindow *parent, wxWindowID id, const wxString &title,
const wxPoint &position, const wxSize& size, long style ) :
wxDialog( parent, id, title, position, size, style | wxRESIZE_BORDER )
{
int numTracks = 0;
TrackListIterator iter( tracks );
for( Track *t = iter.First(); t; t = iter.Next() )
if( t->GetKind() == Track::Wave && ( t->GetSelected() || !selectionOnly ) )
{
numTracks++;
if( t->GetChannel() == Track::LeftChannel )
{
mTrackNames.Add( t->GetName() + _( " - Left" ) );
mTrackNames.Add( t->GetName() + _( " - Right" ) );
t = iter.Next();
numTracks++;
}
else
mTrackNames.Add( t->GetName() );
}
mMixerSpec = new MixerSpec( numTracks, maxNumChannels );
wxBoxSizer *vertSizer = new wxBoxSizer( wxVERTICAL );
wxWindow *mixerPanel = new ExportMixerPanel( mMixerSpec, mTrackNames, this,
ID_MIXERPANEL, wxDefaultPosition, wxSize( 400, -1 ) );
vertSizer->Add( mixerPanel, 1, wxEXPAND | wxALIGN_CENTRE | wxALL, 5 );
wxBoxSizer *horSizer = new wxBoxSizer( wxHORIZONTAL );
mChannelsText = new wxStaticText( this, -1,
wxString::Format( _( "Output Channels: %2d" ),
mMixerSpec->GetNumChannels() ) );
horSizer->Add( mChannelsText, 0, wxALIGN_LEFT | wxALL, 5 );
wxSlider *channels = new wxSlider( this, ID_SLIDER_CHANNEL,
mMixerSpec->GetNumChannels(), 1, mMixerSpec->GetMaxNumChannels(),
wxDefaultPosition, wxSize( 300, -1 ) );
horSizer->Add( channels, 0, wxEXPAND | wxALL, 5 );
vertSizer->Add( horSizer, 0, wxALIGN_CENTRE | wxALL, 5 );
horSizer = new wxBoxSizer( wxHORIZONTAL );
wxButton *cancel = new wxButton( this, wxID_CANCEL, _( "&Cancel" ) );
horSizer->Add( cancel, 0, wxALIGN_CENTRE | wxALL, 5 );
wxButton *ok = new wxButton( this, wxID_OK, _( "&OK" ) );
ok->SetDefault();
horSizer->Add( ok, 0, wxALIGN_CENTRE | wxALL, 5 );
vertSizer->Add( horSizer, 0, wxALIGN_CENTRE | wxALL, 5 );
SetAutoLayout( true );
SetSizer( vertSizer );
vertSizer->Fit( this );
vertSizer->SetSizeHints( this );
SetSizeHints( 640, 480, 20000, 20000 );
SetSize( 640, 480 );
}
/*
* This first function contains the code common to both
* Export() and ExportLossy()
*
* For safety, if the file already exists it stores the filename
* the user wants in actualName, and returns a temporary file name.
* The calling function should rename the file when it's successfully
* exported.
*/
wxString ExportCommon( AudacityProject *project, wxString format,
wxString defaultExtension, bool selectionOnly, double *t0, double *t1,
int *numChannels, wxString &actualName, int maxNumChannels,
MixerSpec **mixerSpec )
{
TrackList *tracks = project->GetTracks();
/* First analyze the selected audio, perform sanity checks, and provide
* information as appropriate. */
/* Tally how many are right, left, mono, and make sure at
least one track is selected (if selectionOnly==true) */
int numSelected = 0, numLeft = 0, numRight = 0, numMono = 0;
float earliestBegin = *t1;
float latestEnd = *t0;
TrackListIterator iter1(tracks);
Track *tr = iter1.First();
while (tr) {
if (tr->GetKind() == Track::Wave) {
if (tr->GetSelected() || !selectionOnly) {
numSelected++;
if (tr->GetChannel() == Track::LeftChannel)
numLeft++;
else if (tr->GetChannel() == Track::RightChannel)
numRight++;
else if (tr->GetChannel() == Track::MonoChannel) {
// It's a mono channel, but it may be panned
float pan = ((WaveTrack*)tr)->GetPan();
if (pan == -1.0)
numLeft++;
else if (pan == 1.0)
numRight++;
else if (pan == 0)
numMono++;
else {
// Panned partially off-center. Mix as stereo.
numLeft++;
numRight++;
}
}
if(tr->GetOffset() < earliestBegin)
earliestBegin = tr->GetOffset();
if(tr->GetEndTime() > latestEnd)
latestEnd = tr->GetEndTime();
}
}
tr = iter1.Next();
}
if(*t0 < earliestBegin)
*t0 = earliestBegin;
if(*t1 > latestEnd)
*t1 = latestEnd;
if (numSelected == 0 && selectionOnly) {
wxMessageBox(_("No tracks are selected! Use Ctrl-A (Select All)\nChoose Export... to export all tracks."),
_("Unable to export"),
wxOK | wxICON_INFORMATION);
return wxT("");
}
/* Detemine if exported file will be stereo or mono or multichannel,
and if mixing will occur */
bool downMix = (gPrefs->Read( wxT("/FileFormats/ExportDownMix" ), true ) !=0) ? true:false ;
int channels;
if( downMix || !mixerSpec )
{
if (numRight > 0 || numLeft > 0)
channels = 2;
else
channels = 1;
numRight += numMono;
numLeft += numMono;
if (numLeft > 1 || numRight > 1)
if (channels == 2) {
ShowWarningDialog(project, wxT("MixStereo"),
_("Your tracks will be mixed down to two stereo channels in the exported file."));
}
else {
ShowWarningDialog(project, wxT("MixMono"),
_("Your tracks will be mixed down to a single mono channel in the exported file."));
}
}
else
{
ExportMixerDialog md( tracks, selectionOnly, maxNumChannels, NULL,
1, _( "Advanced Mixing Options" ) );
if( md.ShowModal() != wxID_OK )
return wxT( "" );
*mixerSpec = new MixerSpec( *( md.GetMixerSpec() ) );
channels = ( *mixerSpec )->GetNumChannels();
}
/* Prepare and display the filename selection dialog */
wxString path = gPrefs->Read(wxT("/DefaultExportPath"),
::wxGetCwd());
wxString nameOnly;
wxString extension;
wxString defaultName = project->GetName();
wxString fName;
wxString maskString;
wxString endOfPathSep;
#if 0 // this code shouldn't be here --dmazzoni
//MERGE exercise exception
if (defaultName == wxT("ThrowExceptionOnExport")) { //lda
throw("Exercise exception");
}
#endif
if (defaultExtension.Left(1) == wxT("."))
defaultExtension =
defaultExtension.Right(defaultExtension.Length()-1);
maskString.Printf(wxT("%s files (*.%s)|*.%s|All files (*.*)|*.*"), format.c_str(),
defaultExtension.c_str(), defaultExtension.c_str());
bool fileOkay;
do {
fileOkay = true;
fName = defaultName + wxT(".") + defaultExtension;
fName = wxFileSelector(wxString::Format(_("Save %s File As:"),
format.c_str()),
path,
fName, // default file name
defaultExtension,
maskString,
wxSAVE | wxOVERWRITE_PROMPT);
if (fName.Length() >= 256) {
wxMessageBox
(_("Sorry, pathnames longer than 256 characters not supported."));
return wxT("");
}
if (fName == wxT(""))
return wxT("");
::wxSplitPath(fName, &path, &nameOnly, &extension);
//
// Make sure the user doesn't accidentally save the file
// as an extension with no name, like just plain ".wav".
//
if ((nameOnly.Left(1)==wxT(".") && extension==wxT("")) ||
(nameOnly==wxT("") && extension!=wxT(""))) {
wxString prompt =
_("Are you sure you want to save the file as \"")+
::wxFileNameFromPath(fName)+wxT("\"?\n");
int action = wxMessageBox(prompt,
wxT("Warning"),
wxYES_NO | wxICON_EXCLAMATION,
project);
fileOkay = (action == wxYES);
continue;
}
//
// Check the extension - add the default if it's not there,
// and warn user if it's abnormal.
//
wxString defaultExtension3 = defaultExtension;
if (defaultExtension.Length() > 3)
defaultExtension = defaultExtension.Left(3);
if (extension == wxT("")) {
#ifdef __WXMSW__
// Windows prefers 3-char uppercase extensions
extension = defaultExtension;
#else
// Linux and Mac prefer lowercase extensions
extension = defaultExtension.Lower();
#endif
}
else if (extension.Upper() != defaultExtension.Upper() &&
extension.Upper() != defaultExtension3.Upper()) {
#ifdef __WXMSW__
// Windows prefers 3-char extensions
defaultExtension3 = defaultExtension3;
#endif
wxString prompt;
prompt.Printf(_("You are about to save a %s file with the name %s.\nNormally these files end in %s, and some programs will not open files with nonstandard extensions.\nAre you sure you want to save the file under this name?"),
format.c_str(),
(wxT("\"")+nameOnly+wxT(".")+extension+wxT("\"")).c_str(),
(wxT("\".")+defaultExtension+wxT("\"")).c_str());
int action = wxMessageBox(prompt,
wxT("Warning"),
wxYES_NO | wxICON_EXCLAMATION,
project);
if (action == wxYES)
fileOkay = true;
else {
fileOkay = false;
defaultName = nameOnly + wxT(".") + extension;
}
}
if (path.Length() > 0 && path.Last() == wxFILE_SEP_PATH)
endOfPathSep = wxT("");
else
endOfPathSep = wxFILE_SEP_PATH;
fName = path + endOfPathSep +
nameOnly + wxT(".") + extension;
} while(!fileOkay);
/*
* Ensure that exporting a file by this name doesn't overwrite
* one of the existing files in the project. (If it would
* overwrite an existing file, DirManager tries to rename the
* existing file.)
*/
if (!project->GetDirManager()->EnsureSafeFilename(wxFileName(fName)))
return wxT("");
gPrefs->Write(wxT("/DefaultExportPath"), path);
*numChannels = channels;
/*
* To be even MORE safe, return a temporary file name based
* on this one...
*/
actualName = fName;
int suffix = 0;
while(::wxFileExists(fName)) {
fName = path + endOfPathSep +
nameOnly + wxString::Format(wxT("%d"), suffix) + wxT(".") + extension;
suffix++;
}
return fName;
}
bool ExportOGG(AudacityProject *project,
bool stereo, wxString fName,
bool selectionOnly, double t0, double t1)
{
double rate = project->GetRate();
wxWindow *parent = project;
TrackList *tracks = project->GetTracks();
double quality = (gPrefs->Read("/FileFormats/OggExportQuality", 50)/(float)100.0);
wxLogNull logNo; // temporarily disable wxWindows error messages
bool cancelling = false;
wxFFile outFile(fName, "wb");
if(!outFile.IsOpened()) {
wxMessageBox(_("Unable to open target file for writing"));
return false;
}
// All the Ogg and Vorbis encoding data
ogg_stream_state stream;
ogg_page page;
ogg_packet packet;
vorbis_info info;
vorbis_comment comment;
vorbis_dsp_state dsp;
vorbis_block block;
// Encoding setup
vorbis_info_init(&info);
vorbis_encode_init_vbr(&info, stereo ? 2 : 1, int(rate + 0.5), quality);
vorbis_comment_init(&comment);
// If we wanted to add comments, we would do it here
// Set up analysis state and auxiliary encoding storage
vorbis_analysis_init(&dsp, &info);
vorbis_block_init(&dsp, &block);
// Set up packet->stream encoder. According to encoder example,
// a random serial number makes it more likely that you can make
// chained streams with concatenation.
srand(time(NULL));
ogg_stream_init(&stream, rand());
// First we need to write the required headers:
// 1. The Ogg bitstream header, which contains codec setup params
// 2. The Vorbis comment header
// 3. The bitstream codebook.
//
// After we create those our responsibility is complete, libvorbis will
// take care of any other ogg bistream constraints (again, according
// to the example encoder source)
ogg_packet bitstream_header;
ogg_packet comment_header;
ogg_packet codebook_header;
vorbis_analysis_headerout(&dsp, &comment, &bitstream_header, &comment_header,
&codebook_header);
// Place these headers into the stream
ogg_stream_packetin(&stream, &bitstream_header);
ogg_stream_packetin(&stream, &comment_header);
ogg_stream_packetin(&stream, &codebook_header);
// Flushing these headers now guarentees that audio data will
// start on a new page, which apparently makes streaming easier
ogg_stream_flush(&stream, &page);
outFile.Write(page.header, page.header_len);
outFile.Write(page.body, page.body_len);
double t = t0;
bool done = false;
wxProgressDialog *progress = NULL;
wxYield();
wxStartTimer();
while(!done && !cancelling){
float deltat = (float)SAMPLES_PER_RUN / rate;
sampleCount samplesThisRun = SAMPLES_PER_RUN;
Mixer *mixer = new Mixer(stereo ? 2 : 1, SAMPLES_PER_RUN,
/* interleaved = */ false, rate, floatSample);
if(t + deltat > t1) {
done = true;
deltat = t1 - t;
samplesThisRun = int(deltat * rate + 0.5);
}
mixer->Clear();
TrackListIterator iter(tracks);
Track *tr = iter.First();
while (tr) {
if (tr->GetKind() == Track::Wave) {
if (tr->GetSelected() || !selectionOnly) {
if (tr->GetChannel() == Track::MonoChannel)
mixer->MixMono((WaveTrack *) tr, t, t + deltat);
else if (tr->GetChannel() == Track::LeftChannel)
mixer->MixLeft((WaveTrack *) tr, t, t + deltat);
else if (tr->GetChannel() == Track::RightChannel)
mixer->MixRight((WaveTrack *) tr, t, t + deltat);
}
}
tr = iter.Next();
}
float **vorbis_buffer = vorbis_analysis_buffer(&dsp, SAMPLES_PER_RUN);
float *left = (float *)mixer->GetBuffer(0);
memcpy(vorbis_buffer[0], left, sizeof(float)*SAMPLES_PER_RUN);
if(stereo) {
float *right = (float *)mixer->GetBuffer(1);
memcpy(vorbis_buffer[1], right, sizeof(float)*SAMPLES_PER_RUN);
}
// tell the encoder how many samples we have
vorbis_analysis_wrote(&dsp, samplesThisRun);
// I don't understand what this call does, so here is the comment
// from the example, verbatim:
//
// vorbis does some data preanalysis, then divvies up blocks
// for more involved (potentially parallel) processing. Get
// a single block for encoding now
while(vorbis_analysis_blockout(&dsp, &block) == 1) {
// analysis, assume we want to use bitrate management
vorbis_analysis(&block, NULL);
vorbis_bitrate_addblock(&block);
while(vorbis_bitrate_flushpacket(&dsp, &packet)) {
// add the packet to the bitstream
ogg_stream_packetin(&stream, &packet);
int result = ogg_stream_pageout(&stream, &page);
if(result != 0) {
outFile.Write(page.header, page.header_len);
outFile.Write(page.body, page.body_len);
}
}
}
if(progress)
cancelling = !progress->Update(int (((t - t0) * 1000) / (t1 - t0) + 0.5));
else if(wxGetElapsedTime(false) > 500) {
wxString message = selectionOnly ?
_("Exporting the selected audio as Ogg Vorbis") :
_("Exporting the entire project as Ogg Vorbis");
progress = new wxProgressDialog(
_("Export"),
message,
1000,
parent,
wxPD_CAN_ABORT | wxPD_REMAINING_TIME | wxPD_AUTO_HIDE);
}
delete mixer;
t += deltat;
}
outFile.Close();
if(progress)
delete progress;
return true;
}
/*
* This first function contains the code common to both
* Export() and ExportLossy()
*
* For safety, if the file already exists it stores the filename
* the user wants in actualName, and returns a temporary file name.
* The calling function should rename the file when it's successfully
* exported.
*/
wxString ExportCommon(AudacityProject *project,
wxString format, wxString defaultExtension,
bool selectionOnly, double *t0, double *t1,
bool *isStereo,
wxString &actualName)
{
TrackList *tracks = project->GetTracks();
/* First analyze the selected audio, perform sanity checks, and provide
* information as appropriate. */
/* Tally how many are right, left, mono, and make sure at
least one track is selected (if selectionOnly==true) */
int numSelected = 0, numLeft = 0, numRight = 0, numMono = 0;
float earliestBegin = *t1;
float latestEnd = *t0;
TrackListIterator iter1(tracks);
Track *tr = iter1.First();
while (tr) {
if (tr->GetKind() == Track::Wave) {
if (tr->GetSelected() || !selectionOnly) {
numSelected++;
if (tr->GetChannel() == Track::LeftChannel)
numLeft++;
else if (tr->GetChannel() == Track::RightChannel)
numRight++;
else if (tr->GetChannel() == Track::MonoChannel)
{
// It's a mono channel, but it may be panned
float pan = ((WaveTrack*)tr)->GetPan();
if (pan == -1.0)
numLeft++;
else if (pan == 1.0)
numRight++;
else if (pan == 0)
numMono++;
else {
numLeft++;
numRight++;
}
}
if(tr->GetOffset() < earliestBegin)
earliestBegin = tr->GetOffset();
if(tr->GetEndTime() > latestEnd)
latestEnd = tr->GetEndTime();
}
}
tr = iter1.Next();
}
if(*t0 < earliestBegin)
*t0 = earliestBegin;
if(*t1 > latestEnd)
*t1 = latestEnd;
if (numSelected == 0 && selectionOnly) {
wxMessageBox(_("No tracks are selected!\n"
"Choose Export... to export all tracks."));
return "";
}
/* Detemine if exported file will be stereo or mono,
and if mixing will occur */
bool stereo = false;
if (numRight > 0 || numLeft > 0)
stereo = true;
numRight += numMono;
numLeft += numMono;
if (numLeft > 1 || numRight > 1)
if (stereo) {
ShowWarningDialog(project, "MixStereo",
_("Your tracks will be mixed down to two "
"stereo channels in the exported file."));
}
else {
ShowWarningDialog(project, "MixMono",
_("Your tracks will be mixed down to a "
"single mono channel in the exported file."));
}
/* Prepare and display the filename selection dialog */
wxString path = gPrefs->Read("/DefaultExportPath",
FROMFILENAME(::wxGetCwd()));
wxString nameOnly;
wxString extension;
wxString defaultName = project->GetName();
wxString fName;
wxString maskString;
wxString endOfPathSep;
if (defaultExtension.Left(1) == ".")
defaultExtension =
defaultExtension.Right(defaultExtension.Length()-1);
maskString.Printf("%s files (*.%s)|*.%s|All files (*.*)|*.*", (const char *)format,
(const char *)defaultExtension, (const char *)defaultExtension);
bool fileOkay;
do {
fileOkay = true;
fName = defaultName + "." + defaultExtension;
fName = wxFileSelector(wxString::Format(_("Save %s File As:"),
(const char *) format),
path,
fName, // default file name
defaultExtension,
maskString,
wxSAVE | wxOVERWRITE_PROMPT);
if (fName.Length() >= 256) {
wxMessageBox
(_("Sorry, pathnames longer than 256 characters not supported."));
return "";
}
if (fName == "")
return "";
::wxSplitPath(fName, &path, &nameOnly, &extension);
//
// Make sure the user doesn't accidentally save the file
// as an extension with no name, like just plain ".wav".
//
if ((nameOnly.Left(1)=="." && extension=="") ||
(nameOnly=="" && extension!="")) {
wxString prompt =
_("Are you sure you want to save the file as \"")+
::wxFileNameFromPath(fName)+"\"?\n";
int action = wxMessageBox(prompt,
"Warning",
wxYES_NO | wxICON_EXCLAMATION,
project);
fileOkay = (action == wxYES);
continue;
}
//
// Check the extension - add the default if it's not there,
// and warn user if it's abnormal.
//
wxString defaultExtension3 = defaultExtension;
if (defaultExtension.Length() > 3)
defaultExtension = defaultExtension.Left(3);
if (extension == "") {
#ifdef __WXMSW__
// Windows prefers 3-char uppercase extensions
extension = defaultExtension;
#else
// Linux and Mac prefer lowercase extensions
extension = defaultExtension.Lower();
#endif
}
else if (extension.Upper() != defaultExtension.Upper() &&
extension.Upper() != defaultExtension3.Upper()) {
#ifdef __WXMSW__
// Windows prefers 3-char extensions
defaultExtension3 = defaultExtension3;
#endif
wxString prompt;
prompt.Printf(_("You are about to save a %s file with the name %s.\n"
"Normally these files end in %s, and some programs "
"will not open files with nonstandard extensions.\n"
"Are you sure you want to save the file "
"under this name?"),
(const char *)format,
(const char *)("\""+nameOnly+"."+extension+"\""),
(const char *)("\"."+defaultExtension+"\""));
int action = wxMessageBox(prompt,
"Warning",
wxYES_NO | wxICON_EXCLAMATION,
project);
if (action == wxYES)
fileOkay = true;
else {
fileOkay = false;
defaultName = nameOnly + "." + extension;
}
}
if (path.Length() > 0 && path.Last() == wxFILE_SEP_PATH)
endOfPathSep = "";
else
endOfPathSep = wxFILE_SEP_PATH;
fName = path + endOfPathSep +
nameOnly + "." + extension;
} while(!fileOkay);
/*
* Ensure that exporting a file by this name doesn't overwrite
* one of the existing files in the project. (If it would
* overwrite an existing file, DirManager tries to rename the
* existing file.)
*/
if (!project->GetDirManager()->EnsureSafeFilename(wxFileName(fName)))
return "";
gPrefs->Write("/DefaultExportPath", path);
*isStereo = stereo;
/*
* To be even MORE safe, return a temporary file name based
* on this one...
*/
actualName = fName;
int suffix = 0;
while(::wxFileExists(FILENAME(fName))) {
fName = path + endOfPathSep +
nameOnly + wxString::Format("%d", suffix) + "." + extension;
suffix++;
}
return fName;
}
//TODO-MB: wouldn't it make more sense to DELETE the time track after 'mix and render'?
void MixAndRender(TrackList *tracks, TrackFactory *trackFactory,
double rate, sampleFormat format,
double startTime, double endTime,
WaveTrack::Holder &uLeft, WaveTrack::Holder &uRight)
{
uLeft.reset(), uRight.reset();
// This function was formerly known as "Quick Mix".
Track *t;
bool mono = false; /* flag if output can be mono without loosing anything*/
bool oneinput = false; /* flag set to true if there is only one input track
(mono or stereo) */
TrackListIterator iter(tracks);
SelectedTrackListOfKindIterator usefulIter(Track::Wave, tracks);
// this only iterates tracks which are relevant to this function, i.e.
// selected WaveTracks. The tracklist is (confusingly) the list of all
// tracks in the project
int numWaves = 0; /* number of wave tracks in the selection */
int numMono = 0; /* number of mono, centre-panned wave tracks in selection*/
t = iter.First();
while (t) {
if (t->GetSelected() && t->GetKind() == Track::Wave) {
numWaves++;
float pan = ((WaveTrack*)t)->GetPan();
if (t->GetChannel() == Track::MonoChannel && pan == 0)
numMono++;
}
t = iter.Next();
}
if (numMono == numWaves)
mono = true;
/* the next loop will do two things at once:
* 1. build an array of all the wave tracks were are trying to process
* 2. determine when the set of WaveTracks starts and ends, in case we
* need to work out for ourselves when to start and stop rendering.
*/
double mixStartTime = 0.0; /* start time of first track to start */
bool gotstart = false; // flag indicates we have found a start time
double mixEndTime = 0.0; /* end time of last track to end */
double tstart, tend; // start and end times for one track.
WaveTrackConstArray waveArray;
t = iter.First();
while (t) {
if (t->GetSelected() && t->GetKind() == Track::Wave) {
waveArray.push_back(static_cast<WaveTrack *>(t));
tstart = t->GetStartTime();
tend = t->GetEndTime();
if (tend > mixEndTime)
mixEndTime = tend;
// try and get the start time. If the track is empty we will get 0,
// which is ambiguous because it could just mean the track starts at
// the beginning of the project, as well as empty track. The give-away
// is that an empty track also ends at zero.
if (tstart != tend) {
// we don't get empty tracks here
if (!gotstart) {
// no previous start, use this one unconditionally
mixStartTime = tstart;
gotstart = true;
} else if (tstart < mixStartTime)
mixStartTime = tstart; // have a start, only make it smaller
} // end if start and end are different
} // end if track is a selected WaveTrack.
/** @TODO: could we not use a SelectedTrackListOfKindIterator here? */
t = iter.Next();
}
/* create the destination track (NEW track) */
if ((numWaves == 1) || ((numWaves == 2) && (usefulIter.First()->GetLink() != NULL)))
oneinput = true;
// only one input track (either 1 mono or one linked stereo pair)
auto mixLeft = trackFactory->NewWaveTrack(format, rate);
if (oneinput)
mixLeft->SetName(usefulIter.First()->GetName()); /* set name of output track to be the same as the sole input track */
else
mixLeft->SetName(_("Mix"));
mixLeft->SetOffset(mixStartTime);
decltype(mixLeft) mixRight{};
if (mono) {
mixLeft->SetChannel(Track::MonoChannel);
}
else {
mixRight = trackFactory->NewWaveTrack(format, rate);
if (oneinput) {
if (usefulIter.First()->GetLink() != NULL) // we have linked track
mixLeft->SetName(usefulIter.First()->GetLink()->GetName()); /* set name to match input track's right channel!*/
else
mixLeft->SetName(usefulIter.First()->GetName()); /* set name to that of sole input channel */
}
else
mixRight->SetName(_("Mix"));
mixLeft->SetChannel(Track::LeftChannel);
mixRight->SetChannel(Track::RightChannel);
mixRight->SetOffset(mixStartTime);
mixLeft->SetLinked(true);
}
int maxBlockLen = mixLeft->GetIdealBlockSize();
// If the caller didn't specify a time range, use the whole range in which
// any input track had clips in it.
if (startTime == endTime) {
startTime = mixStartTime;
endTime = mixEndTime;
}
Mixer mixer(waveArray,
Mixer::WarpOptions(tracks->GetTimeTrack()),
startTime, endTime, mono ? 1 : 2, maxBlockLen, false,
rate, format);
::wxSafeYield();
int updateResult = eProgressSuccess;
{
ProgressDialog progress(_("Mix and Render"),
_("Mixing and rendering tracks"));
while (updateResult == eProgressSuccess) {
sampleCount blockLen = mixer.Process(maxBlockLen);
if (blockLen == 0)
break;
if (mono) {
samplePtr buffer = mixer.GetBuffer();
mixLeft->Append(buffer, format, blockLen);
}
else {
samplePtr buffer;
buffer = mixer.GetBuffer(0);
mixLeft->Append(buffer, format, blockLen);
buffer = mixer.GetBuffer(1);
mixRight->Append(buffer, format, blockLen);
}
updateResult = progress.Update(mixer.MixGetCurrentTime() - startTime, endTime - startTime);
}
}
mixLeft->Flush();
if (!mono)
mixRight->Flush();
if (updateResult == eProgressCancelled || updateResult == eProgressFailed)
{
return;
}
else {
uLeft = std::move(mixLeft),
uRight = std::move(mixRight);
#if 0
int elapsedMS = wxGetElapsedTime();
double elapsedTime = elapsedMS * 0.001;
double maxTracks = totalTime / (elapsedTime / numWaves);
// Note: these shouldn't be translated - they're for debugging
// and profiling only.
printf(" Tracks: %d\n", numWaves);
printf(" Mix length: %f sec\n", totalTime);
printf("Elapsed time: %f sec\n", elapsedTime);
printf("Max number of tracks to mix in real time: %f\n", maxTracks);
#endif
}
}
bool ExportMultiple::ExportMultipleByLabel(bool byName, wxString prefix)
{
Track *tr;
int numFiles = mNumLabels;
int l = 0;
int numLeft = 0;
int numRight = 0;
int numMono = 0;
// Account for exporting before first label
if (mFirst->GetValue()) {
l--;
numFiles++;
}
// Figure out if we're exporting stereo or mono
for (tr = mIterator.First(mTracks); tr != NULL; tr = mIterator.Next()) {
// Only want wave tracks
if (!tr->GetKind() == Track::Wave) {
continue;
}
// Found a left channel
if (tr->GetChannel() == Track::LeftChannel) {
numLeft++;
}
// Found a right channel
else if (tr->GetChannel() == Track::RightChannel) {
numRight++;
}
// Found a mono channel, but it may be panned
else if (tr->GetChannel() == Track::MonoChannel) {
float pan = ((WaveTrack*)tr)->GetPan();
// Figure out what kind of channel it should be
if (pan == -1.0) {
numLeft++;
}
else if (pan == 1.0) {
numRight++;
}
else if (pan == 0) {
numMono++;
}
else {
numLeft++;
numRight++;
}
}
}
// We we have a stereo or mono mix?
bool stereo = false;
if (numRight > 0 || numLeft > 0) {
stereo = true;
}
wxArrayString otherNames;
wxString name;
double t0, t1;
int count = 0;
bool ok = true;
// Examine all labels
while (l < mNumLabels) {
const LabelStruct *info = NULL;
// Get file name and starting time
if (l < 0) {
name = mFirstFileName->GetValue();
t0 = 0.0;
}
else {
info = mLabels->GetLabel(l);
name = info->title;
t0 = info->t;
}
// Figure out the ending time
if (info && info->t < info->t1) {
t1 = info->t1;
}
else if (l < mNumLabels-1) {
const LabelStruct *info1 = mLabels->GetLabel(l+1);
t1 = info1->t;
}
else {
t1 = mTracks->GetEndTime();
}
// Numbering files...
if (!byName) {
name.Printf(wxT("%s-%d"), prefix.c_str(), count+1);
}
// Make sure the file name is unique within the directory
MakeNameUnique(otherNames, name);
// Export it
ok = DoExport(stereo, name, false, t0, t1, count+1);
if (!ok) {
break;
}
count++;
l++;
}
// Give 'em the result
::wxMessageBox(wxString::Format(ok
? _("Successfully exported %d file(s).")
: _("Something went wrong after exporting %d file(s)."),
count),
_("Export Multiple"),
wxOK | wxCENTRE, this);
return ok;
}
bool ExportCL(AudacityProject *project, bool stereo, wxString fName,
bool selectionOnly, double t0, double t1)
{
int rate = int(project->GetRate() + 0.5);
wxWindow *parent = project;
TrackList *tracks = project->GetTracks();
wxString command = gPrefs->Read("/FileFormats/ExternalProgramExportCommand", "lame - '%f'");
command.Replace("%f", fName);
/* establish parameters */
int channels = stereo ? 2 : 1;
unsigned long totalSamples = (unsigned long)((t1 - t0) * rate + 0.5);
unsigned long sampleBytes = totalSamples * channels * SAMPLE_SIZE(int16Sample);
double timeStep = 10.0; // write in blocks of 10 secs
/* fill up the wav header */
wav_header header;
header.riffID[0] = 'R';
header.riffID[1] = 'I';
header.riffID[2] = 'F';
header.riffID[3] = 'F';
header.riffType[0] = 'W';
header.riffType[1] = 'A';
header.riffType[2] = 'V';
header.riffType[3] = 'E';
header.lenAfterRiff = sampleBytes + 32;
header.fmtID[0] = 'f';
header.fmtID[1] = 'm';
header.fmtID[2] = 't';
header.fmtID[3] = ' ';
header.formatChunkLen = 16;
header.formatTag = 1;
header.channels = channels;
header.sampleRate = rate;
header.bitsPerSample = SAMPLE_SIZE(int16Sample) * 8;
header.blockAlign = header.bitsPerSample * header.channels;
header.avgBytesPerSec = header.sampleRate * header.blockAlign;
header.dataID[0] = 'd';
header.dataID[1] = 'a';
header.dataID[2] = 't';
header.dataID[3] = 'a';
header.dataLen = sampleBytes;
FILE *pipe = popen(command.c_str(), "w");
/* write the header */
fwrite( &header, sizeof(wav_header), 1, pipe );
//sampleCount maxSamples = int (timeStep * rate + 0.5);
wxProgressDialog *progress = NULL;
wxYield();
wxStartTimer();
wxBusyCursor busy;
bool cancelling = false;
double t = t0;
while (t < t1 && !cancelling) {
double deltat = timeStep;
if (t + deltat > t1)
deltat = t1 - t;
sampleCount numSamples = int (deltat * rate + 0.5);
Mixer *mixer = new Mixer(channels, numSamples, true, rate, int16Sample);
wxASSERT(mixer);
mixer->Clear();
char *buffer = new char[numSamples * SAMPLE_SIZE(int16Sample) * channels];
wxASSERT(buffer);
TrackListIterator iter(tracks);
Track *tr = iter.First();
while (tr) {
if (tr->GetKind() == Track::Wave) {
if (tr->GetSelected() || !selectionOnly) {
if (tr->GetChannel() == Track::MonoChannel)
mixer->MixMono((WaveTrack *) tr, t, t + deltat);
if (tr->GetChannel() == Track::LeftChannel)
mixer->MixLeft((WaveTrack *) tr, t, t + deltat);
if (tr->GetChannel() == Track::RightChannel)
mixer->MixRight((WaveTrack *) tr, t, t + deltat);
}
}
tr = iter.Next();
}
samplePtr mixed = mixer->GetBuffer();
// Byte-swapping is neccesary on big-endian machines, since
// WAV files are little-endian
#if wxBYTE_ORDER == wxBIG_ENDIAN
{
short *buffer = (short*)mixed;
for( int i = 0; i < numSamples; i++ )
buffer[i] = wxINT16_SWAP_ON_BE(buffer[i]);
}
#endif
fwrite( mixed, numSamples * channels * SAMPLE_SIZE(int16Sample), 1, pipe );
t += deltat;
if (!progress && wxGetElapsedTime(false) > 500) {
wxString message;
if (selectionOnly)
message = "Exporting the selected audio using command-line encoder";
else
message = "Exporting the entire project using command-line encoder";
progress =
new wxProgressDialog("Export",
message,
1000,
parent,
wxPD_CAN_ABORT |
wxPD_REMAINING_TIME | wxPD_AUTO_HIDE);
}
if (progress) {
cancelling =
!progress->Update(int (((t - t0) * 1000) / (t1 - t0) + 0.5));
}
delete mixer;
delete[]buffer;
}
pclose( pipe );
if(progress)
delete progress;
return true;
}
ExportMixerDialog::ExportMixerDialog( TrackList *tracks, bool selectedOnly,
int maxNumChannels, wxWindow *parent, wxWindowID id, const wxString &title,
const wxPoint &position, const wxSize& size, long style ) :
wxDialog( parent, id, title, position, size, style | wxRESIZE_BORDER )
{
int numTracks = 0;
TrackListIterator iter( tracks );
for( Track *t = iter.First(); t; t = iter.Next() )
{
if( t->GetKind() == Track::Wave && ( t->GetSelected() || !selectedOnly ) )
{
numTracks++;
if( t->GetChannel() == Track::LeftChannel )
{
mTrackNames.Add( t->GetName() + _( " - Left" ) );
mTrackNames.Add( t->GetName() + _( " - Right" ) );
t = iter.Next();
numTracks++;
}
else
mTrackNames.Add( t->GetName() );
}
}
// JKC: This is an attempt to fix a 'watching brief' issue, where the slider is
// sometimes not slidable. My suspicion is that a mixer may incorrectly
// state the number of channels - so we assume there are always at least two.
// The downside is that if someone is exporting to a mono device, the dialog
// will allow them to output to two channels. Hmm. We may need to revisit this.
if (maxNumChannels < 2 )
maxNumChannels = 2;
if (maxNumChannels > 32)
maxNumChannels = 32;
mMixerSpec = new MixerSpec( numTracks, maxNumChannels );
wxBoxSizer *vertSizer = new wxBoxSizer( wxVERTICAL );
wxWindow *mixerPanel = new ExportMixerPanel( mMixerSpec, mTrackNames, this,
ID_MIXERPANEL, wxDefaultPosition, wxSize( 400, -1 ) );
vertSizer->Add( mixerPanel, 1, wxEXPAND | wxALIGN_CENTRE | wxALL, 5 );
wxBoxSizer *horSizer = new wxBoxSizer( wxHORIZONTAL );
mChannelsText = new wxStaticText( this, -1,
wxString::Format( _( "Output Channels: %2d" ),
mMixerSpec->GetNumChannels() ) );
horSizer->Add( mChannelsText, 0, wxALIGN_LEFT | wxALL, 5 );
wxSlider *channels = new wxSlider( this, ID_SLIDER_CHANNEL,
mMixerSpec->GetNumChannels(), 1, mMixerSpec->GetMaxNumChannels(),
wxDefaultPosition, wxSize( 300, -1 ) );
horSizer->Add( channels, 0, wxEXPAND | wxALL, 5 );
vertSizer->Add( horSizer, 0, wxALIGN_CENTRE | wxALL, 5 );
vertSizer->Add( CreateStdButtonSizer(this, eCancelButton|eOkButton), 0, wxEXPAND );
SetAutoLayout( true );
SetSizer( vertSizer );
vertSizer->Fit( this );
vertSizer->SetSizeHints( this );
SetSizeHints( 640, 480, 20000, 20000 );
SetSize( 640, 480 );
}
bool Exporter::ExamineTracks()
{
// Init
mNumSelected = 0;
mNumLeft = 0;
mNumRight = 0;
mNumMono = 0;
// First analyze the selected audio, perform sanity checks, and provide
// information as appropriate.
// Tally how many are right, left, mono, and make sure at
// least one track is selected (if selectedOnly==true)
float earliestBegin = mT1;
float latestEnd = mT0;
TrackList *tracks = mProject->GetTracks();
TrackListIterator iter1(tracks);
Track *tr = iter1.First();
while (tr) {
if (tr->GetKind() == Track::Wave) {
if (tr->GetSelected() || !mSelectedOnly) {
mNumSelected++;
if (tr->GetChannel() == Track::LeftChannel) {
mNumLeft++;
}
else if (tr->GetChannel() == Track::RightChannel) {
mNumRight++;
}
else if (tr->GetChannel() == Track::MonoChannel) {
// It's a mono channel, but it may be panned
float pan = ((WaveTrack*)tr)->GetPan();
if (pan == -1.0)
mNumLeft++;
else if (pan == 1.0)
mNumRight++;
else if (pan == 0)
mNumMono++;
else {
// Panned partially off-center. Mix as stereo.
mNumLeft++;
mNumRight++;
}
}
if (tr->GetOffset() < earliestBegin) {
earliestBegin = tr->GetOffset();
}
if (tr->GetEndTime() > latestEnd) {
latestEnd = tr->GetEndTime();
}
}
}
tr = iter1.Next();
}
if (mSelectedOnly && mNumSelected == 0) {
wxMessageBox(_("No tracks are selected! Use Ctrl-A (Select All)\nChoose Export... to export all tracks."),
_("Unable to export"),
wxOK | wxICON_INFORMATION);
return false;
}
if (mT0 < earliestBegin)
mT0 = earliestBegin;
if (mT1 > latestEnd)
mT1 = latestEnd;
return true;
}
