double TrackList::GetMinOffset() const
{
if (IsEmpty())
return 0.0;
double len = head->t->GetOffset();
ConstTrackListIterator iter(this);
for (Track *t = iter.First(); t; t = iter.Next()) {
double l = t->GetOffset();
if (l < len)
len = l;
}
return len;
}
/*
* 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;
}
/*
* 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 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;
}