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audacia/src/export/ExportPCM.cpp

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/**********************************************************************
Audacity: A Digital Audio Editor
ExportPCM.cpp
Dominic Mazzoni
**********************************************************************/
#include <wx/defs.h>
#include <wx/choice.h>
#include <wx/dynlib.h>
#include <wx/filename.h>
#include <wx/intl.h>
#include <wx/timer.h>
#include <wx/msgdlg.h>
#include <wx/progdlg.h>
#include <wx/string.h>
#include <wx/textctrl.h>
#include <wx/window.h>
#include "sndfile.h"
#include "../Audacity.h"
#include "../FileFormats.h"
#include "../Internat.h"
#include "../LabelTrack.h"
#include "../Mix.h"
#include "../Prefs.h"
#include "../Project.h"
#include "../Tags.h"
#include "../Track.h"
#include "../WaveTrack.h"
#include "../ondemand/ODManager.h"
#include "Export.h"
#ifdef USE_LIBID3TAG
#include <id3tag.h>
// DM: the following functions were supposed to have been
// included in id3tag.h - should be fixed in the next release
// of mad.
extern "C" {
struct id3_frame *id3_frame_new(char const *);
id3_length_t id3_latin1_length(id3_latin1_t const *);
void id3_latin1_decode(id3_latin1_t const *, id3_ucs4_t *);
}
#endif
//----------------------------------------------------------------------------
// Statics
//----------------------------------------------------------------------------
static int ReadExportFormatPref()
{
#if defined(__WXMAC__)
return gPrefs->Read(wxT("/FileFormats/ExportFormat_SF1"),
(long int)(SF_FORMAT_AIFF | SF_FORMAT_PCM_16));
#else
return gPrefs->Read(wxT("/FileFormats/ExportFormat_SF1"),
(long int)(SF_FORMAT_WAV | SF_FORMAT_PCM_16));
#endif
}
static void WriteExportFormatPref(int format)
{
gPrefs->Write(wxT("/FileFormats/ExportFormat_SF1"), (long int)format);
gPrefs->Flush();
}
//----------------------------------------------------------------------------
// ExportPCMOptions Class
//----------------------------------------------------------------------------
#define ID_FORMAT_CHOICE 7101
#define ID_HEADER_CHOICE 7102
#define ID_ENCODING_CHOICE 7103
class ExportPCMOptions : public wxDialog
{
public:
ExportPCMOptions(wxWindow *parent, int format);
void PopulateOrExchange(ShuttleGui & S);
void OnHeaderChoice(wxCommandEvent & evt);
void OnChoice(wxCommandEvent & event);
void OnOK(wxCommandEvent& event);
private:
bool ValidatePair(int format);
int GetFormat();
private:
wxArrayString mHeaderNames;
wxArrayString mEncodingNames;
wxChoice *mHeaderChoice;
wxChoice *mEncodingChoice;
wxButton *mOk;
int mHeaderFromChoice;
int mEncodingFromChoice;
wxArrayInt mEncodingFormats;
DECLARE_EVENT_TABLE()
};
BEGIN_EVENT_TABLE(ExportPCMOptions, wxDialog)
EVT_CHOICE(ID_HEADER_CHOICE, ExportPCMOptions::OnHeaderChoice)
EVT_CHOICE(ID_ENCODING_CHOICE, ExportPCMOptions::OnChoice)
EVT_BUTTON(wxID_OK, ExportPCMOptions::OnOK)
END_EVENT_TABLE()
///
///
ExportPCMOptions::ExportPCMOptions(wxWindow *parent, int selformat)
: wxDialog(NULL, wxID_ANY,
wxString(_("Specify Uncompressed Options")))
{
mOk = NULL;
int format = 0;
switch (selformat)
{
case 0: // other uncompressed
format = ReadExportFormatPref();
break;
case 1: // 16-bit AIFF
format = SF_FORMAT_AIFF | SF_FORMAT_PCM_16;
break;
case 2: // 16-bit WAV
format = SF_FORMAT_WAV | SF_FORMAT_PCM_16;
break;
case 3: // GSM WAV
format = SF_FORMAT_WAV | SF_FORMAT_GSM610;
break;
default: // bug - forgot to extend this case statement
wxASSERT(false);
format = ReadExportFormatPref();
break;
}
int i;
int num;
int sel;
num = sf_num_headers();
sel = 0;
for (i = 0; i < num; i++) {
mHeaderNames.Add(sf_header_index_name(i));
if ((format & SF_FORMAT_TYPEMASK) == sf_header_index_to_type(i)) {
sel = i;
}
}
mHeaderFromChoice = sel;
mEncodingFormats.Clear();
num = sf_num_encodings();
mEncodingFromChoice = sel = 0;
for (i = 0; i < num; i++) {
int enc = sf_encoding_index_to_subtype(i);
int fmt = (format & SF_FORMAT_TYPEMASK) | enc;
bool valid = ValidatePair(fmt);
if (valid)
{
mEncodingNames.Add(sf_encoding_index_name(i));
mEncodingFormats.Add(enc);
if ((format & SF_FORMAT_SUBMASK) == sf_encoding_index_to_subtype(i)) {
mEncodingFromChoice = sel;
}
else sel++;
}
}
ShuttleGui S(this, eIsCreatingFromPrefs);
PopulateOrExchange(S);
Layout();
Fit();
Center();
}
///
///
void ExportPCMOptions::PopulateOrExchange(ShuttleGui & S)
{
S.StartHorizontalLay(wxEXPAND, true);
{
S.StartStatic(_("Uncompressed Export Setup"), true);
{
S.StartMultiColumn(2, wxEXPAND);
{
S.SetStretchyCol(1);
mHeaderChoice = S.Id(ID_HEADER_CHOICE)
.AddChoice(_("Header:"),
mHeaderNames[mHeaderFromChoice],
&mHeaderNames);
mEncodingChoice = S.Id(ID_ENCODING_CHOICE)
.AddChoice(_("Encoding:"),
mEncodingNames[mEncodingFromChoice],
&mEncodingNames);
}
S.EndMultiColumn();
S.AddFixedText(_("(Not all combinations of headers and encodings are possible.)"));
}
S.EndStatic();
}
S.EndHorizontalLay();
S.AddStandardButtons();
mOk = (wxButton *)wxWindow::FindWindowById(wxID_OK, this);
return;
}
///
///
void ExportPCMOptions::OnHeaderChoice(wxCommandEvent & evt)
{
int format = sf_header_index_to_type(mHeaderChoice->GetSelection());
mEncodingNames.Clear();
mEncodingChoice->Clear();
mEncodingFormats.Clear();
int sel = wxNOT_FOUND;
int i,j;
int sfnum = sf_num_simple_formats();
wxArrayInt sfs;
for (i = 0; i < sfnum; i++)
{
SF_FORMAT_INFO *fi = sf_simple_format(i);
sfs.Add(fi->format);
}
int num = sf_num_encodings();
for (i = 0; i < num; i++)
{
int enc = sf_encoding_index_to_subtype(i);
int fmt = format | enc;
bool valid = ValidatePair(fmt);
if (valid)
{
mEncodingNames.Add(sf_encoding_index_name(i));
mEncodingChoice->Append(sf_encoding_index_name(i));
mEncodingFormats.Add(enc);
for (j = 0; j < sfnum; j++)
{
int enc = sfs[j];
if ((sel == wxNOT_FOUND) && (fmt == enc))
{
sel = mEncodingFormats.GetCount()-1;
break;
}
}
}
}
if (sel == wxNOT_FOUND) sel = 0;
mEncodingFromChoice = sel;
mEncodingChoice->SetSelection(sel);
ValidatePair(GetFormat());
}
///
///
void ExportPCMOptions::OnChoice(wxCommandEvent & event)
{
}
///
///
void ExportPCMOptions::OnOK(wxCommandEvent& event)
{
WriteExportFormatPref(GetFormat());
EndModal(wxID_OK);
return;
}
int ExportPCMOptions::GetFormat()
{
int hdr = sf_header_index_to_type(mHeaderChoice->GetSelection());
int sel = mEncodingChoice->GetSelection();
int enc = mEncodingFormats[sel];
return hdr | enc;
}
/// Calls a libsndfile library function to determine whether the user's
/// choice of sample encoding (e.g. pcm 16-bit or GSM 6.10 compression)
/// is compatible with their choice of file format (e.g. WAV, AIFF)
/// and enables/disables the OK button accordingly.
bool ExportPCMOptions::ValidatePair(int format)
{
SF_INFO info;
memset(&info, 0, sizeof(info));
info.frames = 0;
info.samplerate = 44100;
info.channels = 1;
info.format = format;
info.sections = 1;
info.seekable = 0;
int valid = sf_format_check(&info);
if (mOk)
mOk->Enable(valid != 0 ? true : false);
return valid != 0 ? true : false;
}
//----------------------------------------------------------------------------
// ExportPCM Class
//----------------------------------------------------------------------------
class ExportPCM : public ExportPlugin
{
public:
ExportPCM();
void Destroy();
// Required
bool DisplayOptions(wxWindow *parent, int format = 0);
int Export(AudacityProject *project,
int channels,
wxString fName,
bool selectedOnly,
double t0,
double t1,
MixerSpec *mixerSpec = NULL,
Tags *metadata = NULL,
int subformat = 0);
// optional
wxString GetExtension(int index = 0);
private:
bool AddStrings(AudacityProject *project, SNDFILE *sf, Tags *tags);
void AddID3Chunk(wxString fName, Tags *tags);
};
ExportPCM::ExportPCM()
: ExportPlugin()
{
SF_INFO si;
si.samplerate = 0;
si.channels = 0;
int format; // the index of the format we are setting up at the moment
/* add default user controlled format to list of formats this plug-in does
* at position 0 */
format = AddFormat() - 1; // store the index = 1 less than the count
SetFormat(wxT("LIBSNDFILE"),format);
SetCanMetaData(true,format);
SetDescription(_("Other uncompressed files"),format);
wxArrayString allext = sf_get_all_extensions();
wxString wavext = sf_header_extension(SF_FORMAT_WAV); // get WAV ext.
#if defined(wxMSW)
// On Windows make sure WAV is at the beginning of the list of all possible
// extensions for this format
allext.Remove(wavext);
allext.Insert(wavext,0);
#endif
SetExtensions(allext,format);
SetMaxChannels(255,format);
/* add AIFF 16-bit to list of sub-formats for this plug-in at position 1 */
si.format = SF_FORMAT_AIFF | SF_FORMAT_PCM_16;
for (si.channels = 1; sf_format_check(&si); si.channels++){};
format = AddFormat() - 1;
SetFormat(wxT("AIFF"),format);
SetCanMetaData(true,format);
SetDescription(_("AIFF (Apple) signed 16 bit PCM"),format);
wxString aiffext = sf_header_extension(si.format);
AddExtension(aiffext,format);
SetMaxChannels(si.channels - 1,format);
/* add WAV 16-bit at position 2 */
si.format = SF_FORMAT_WAV | SF_FORMAT_PCM_16;
for (si.channels = 1; sf_format_check(&si); si.channels++){};
format = AddFormat() - 1;
SetFormat(wxT("WAV"),format);
SetCanMetaData(true,format);
SetDescription(_("WAV (Microsoft) signed 16 bit PCM"),format);
// we sorted out wavext near the begining
AddExtension(wavext,format);
SetMaxChannels(si.channels - 1,format);
/* add GSM6.10 to list of formats at position 3 */
si.format = SF_FORMAT_WAV | SF_FORMAT_GSM610;
for (si.channels = 1; sf_format_check(&si); si.channels++){};
format = AddFormat() - 1;
SetFormat(wxT("GSM610"),format);
SetCanMetaData(true,format);
SetDescription(_("GSM 6.10 WAV (mobile)"),format);
AddExtension(sf_header_extension(si.format),format);
SetMaxChannels(si.channels - 1,format);
}
void ExportPCM::Destroy()
{
delete this;
}
/**
*
* @param subformat Control whether we are doing a "preset" export to a popular
* file type, or giving the user full control over libsndfile. Set to 0
* (default) gives full control, 1 gives 16-bit AIFF, 2 gives 16-bit WAV
* 3 gives a GSM 6.10 WAV file */
int ExportPCM::Export(AudacityProject *project,
int numChannels,
wxString fName,
bool selectionOnly,
double t0,
double t1,
MixerSpec *mixerSpec,
Tags *metadata,
int subformat)
{
double rate = project->GetRate();
TrackList *tracks = project->GetTracks();
int sf_format;
switch (subformat)
{
case 0: // other uncompressed
sf_format = ReadExportFormatPref();
break;
case 1: // AIFF
sf_format = SF_FORMAT_AIFF | SF_FORMAT_PCM_16;
break;
case 2: // WAV
sf_format = SF_FORMAT_WAV | SF_FORMAT_PCM_16;
break;
case 3:
sf_format = SF_FORMAT_WAV | SF_FORMAT_GSM610;
break;
default: // land here if supplied a sub-format that we don't know about
wxASSERT(false); // raise assertion - this is a bug
sf_format = ReadExportFormatPref(); // treat it like 0 so users get a
// working result
break;
}
wxString formatStr;
SF_INFO info;
SNDFILE *sf = NULL;
int err;
//This whole operation should not occur while a file is being loaded on OD,
//(we are worried about reading from a file being written to,) so we block.
//Furthermore, we need to do this because libsndfile is not threadsafe.
ODManager::LockLibSndFileMutex();
formatStr = sf_header_name(sf_format & SF_FORMAT_TYPEMASK);
ODManager::UnlockLibSndFileMutex();
// Use libsndfile to export file
info.samplerate = (unsigned int)(rate + 0.5);
info.frames = (unsigned int)((t1 - t0)*rate + 0.5);
info.channels = numChannels;
info.format = sf_format;
info.sections = 1;
info.seekable = 0;
// If we can't export exactly the format they requested,
// try the default format for that header type...
if (!sf_format_check(&info))
info.format = (info.format & SF_FORMAT_TYPEMASK);
if (!sf_format_check(&info)) {
wxMessageBox(_("Cannot export audio in this format."));
return false;
}
wxFile f; // will be closed when it goes out of scope
if (f.Open(fName, wxFile::write)) {
// Even though there is an sf_open() that takes a filename, use the one that
// takes a file descriptor since wxWidgets can open a file with a Unicode name and
// libsndfile can't (under Windows).
ODManager::LockLibSndFileMutex();
sf = sf_open_fd(f.fd(), SFM_WRITE, &info, FALSE);
//add clipping for integer formats. We allow floats to clip.
sf_command(sf, SFC_SET_CLIPPING, NULL,sf_subtype_is_integer(sf_format)?SF_TRUE:SF_FALSE) ;
ODManager::UnlockLibSndFileMutex();
}
if (!sf) {
wxMessageBox(wxString::Format(_("Cannot export audio to %s"),
fName.c_str()));
return false;
}
// Retrieve tags if not given a set
if (metadata == NULL)
metadata = project->GetTags();
if (!AddStrings(project, sf, metadata)) { // meta data presence check
sf_close(sf);
return false;
}
sampleFormat format;
if (sf_subtype_more_than_16_bits(info.format))
format = floatSample;
else
format = int16Sample;
int maxBlockLen = 44100 * 5;
int updateResult = eProgressSuccess;
int numWaveTracks;
WaveTrack **waveTracks;
tracks->GetWaveTracks(selectionOnly, &numWaveTracks, &waveTracks);
Mixer *mixer = CreateMixer(numWaveTracks, waveTracks,
tracks->GetTimeTrack(),
t0, t1,
info.channels, maxBlockLen, true,
rate, format, true, mixerSpec);
ProgressDialog *progress = new ProgressDialog(wxFileName(fName).GetName(),
selectionOnly ?
wxString::Format(_("Exporting the selected audio as %s"),
formatStr.c_str()) :
wxString::Format(_("Exporting the entire project as %s"),
formatStr.c_str()));
while(updateResult == eProgressSuccess) {
sampleCount samplesWritten;
sampleCount numSamples = mixer->Process(maxBlockLen);
if (numSamples == 0)
break;
samplePtr mixed = mixer->GetBuffer();
ODManager::LockLibSndFileMutex();
if (format == int16Sample)
samplesWritten = sf_writef_short(sf, (short *)mixed, numSamples);
else
samplesWritten = sf_writef_float(sf, (float *)mixed, numSamples);
ODManager::UnlockLibSndFileMutex();
if (samplesWritten != numSamples) {
char buffer2[1000];
sf_error_str(sf, buffer2, 1000);
wxMessageBox(wxString::Format(
/* i18n-hint: %s will be the error message from libsndfile, which
* is usually something unhelpful (and untranslated) like "system
* error" */
_("Error while writing %s file (disk full?).\nLibsndfile says \"%s\""),
formatStr.c_str(),
wxString::FromAscii(buffer2).c_str()));
break;
}
updateResult = progress->Update(mixer->MixGetCurrentTime()-t0, t1-t0);
}
delete progress;
delete mixer;
delete[] waveTracks;
ODManager::LockLibSndFileMutex();
err = sf_close(sf);
ODManager::UnlockLibSndFileMutex();
if (err) {
char buffer[1000];
sf_error_str(sf, buffer, 1000);
wxMessageBox(wxString::Format
/* i18n-hint: %s will be the error message from libsndfile */
(_("Error (file may not have been written): %s"),
buffer));
}
if ((sf_format & SF_FORMAT_TYPEMASK) == SF_FORMAT_AIFF) {
AddID3Chunk(fName, metadata);
}
#ifdef __WXMAC__
wxFileName fn(fName);
fn.MacSetTypeAndCreator(sf_header_mactype(sf_format & SF_FORMAT_TYPEMASK),
AUDACITY_CREATOR);
#endif
return updateResult;
}
bool ExportPCM::AddStrings(AudacityProject *project, SNDFILE *sf, Tags *tags)
{
if (tags->HasTag(TAG_TITLE)) {
sf_set_string(sf, SF_STR_TITLE, tags->GetTag(TAG_TITLE).mb_str(wxConvUTF8));
}
if (tags->HasTag(TAG_ARTIST)) {
sf_set_string(sf, SF_STR_ARTIST, tags->GetTag(TAG_ARTIST).mb_str(wxConvUTF8));
}
if (tags->HasTag(TAG_COMMENTS)) {
sf_set_string(sf, SF_STR_COMMENT, tags->GetTag(TAG_COMMENTS).mb_str(wxConvUTF8));
}
if (tags->HasTag(TAG_YEAR)) {
sf_set_string(sf, SF_STR_DATE, tags->GetTag(TAG_YEAR).mb_str(wxConvUTF8));
}
if (tags->HasTag(wxT("Copyright"))) {
sf_set_string(sf, SF_STR_COPYRIGHT, tags->GetTag(wxT("Copyright")).mb_str(wxConvUTF8));
}
if (tags->HasTag(wxT("Software"))) {
sf_set_string(sf, SF_STR_SOFTWARE, tags->GetTag(wxT("Software")).mb_str(wxConvUTF8));
}
return true;
}
void ExportPCM::AddID3Chunk(wxString fName, Tags *tags)
{
#ifdef USE_LIBID3TAG
struct id3_tag *tp = id3_tag_new();
wxString n, v;
for (bool cont = tags->GetFirst(n, v); cont; cont = tags->GetNext(n, v)) {
const char *name = "TXXX";
if (n.CmpNoCase(TAG_TITLE) == 0) {
name = ID3_FRAME_TITLE;
}
else if (n.CmpNoCase(TAG_ARTIST) == 0) {
name = ID3_FRAME_ARTIST;
}
else if (n.CmpNoCase(TAG_ALBUM) == 0) {
name = ID3_FRAME_ALBUM;
}
else if (n.CmpNoCase(TAG_YEAR) == 0) {
name = ID3_FRAME_YEAR;
}
else if (n.CmpNoCase(TAG_GENRE) == 0) {
name = ID3_FRAME_GENRE;
}
else if (n.CmpNoCase(TAG_COMMENTS) == 0) {
name = ID3_FRAME_COMMENT;
}
else if (n.CmpNoCase(TAG_TRACK) == 0) {
name = ID3_FRAME_TRACK;
}
struct id3_frame *frame = id3_frame_new(name);
if (!n.IsAscii() || !v.IsAscii()) {
id3_field_settextencoding(id3_frame_field(frame, 0), ID3_FIELD_TEXTENCODING_UTF_16);
}
else {
id3_field_settextencoding(id3_frame_field(frame, 0), ID3_FIELD_TEXTENCODING_ISO_8859_1);
}
id3_ucs4_t *ucs4 =
id3_utf8_ucs4duplicate((id3_utf8_t *) (const char *) v.mb_str(wxConvUTF8));
if (strcmp(name, ID3_FRAME_COMMENT) == 0) {
// A hack to get around iTunes not recognizing the comment. The
// language defaults to XXX and, since it's not a valid language,
// iTunes just ignores the tag. So, either set it to a valid language
// (which one???) or just clear it. Unfortunately, there's no supported
// way of clearing the field, so do it directly.
id3_field *f = id3_frame_field(frame, 1);
memset(f->immediate.value, 0, sizeof(f->immediate.value));
id3_field_setfullstring(id3_frame_field(frame, 3), ucs4);
}
else if (strcmp(name, "TXXX") == 0) {
id3_field_setstring(id3_frame_field(frame, 2), ucs4);
free(ucs4);
ucs4 = id3_utf8_ucs4duplicate((id3_utf8_t *) (const char *) n.mb_str(wxConvUTF8));
id3_field_setstring(id3_frame_field(frame, 1), ucs4);
}
else {
id3_field_setstrings(id3_frame_field(frame, 1), 1, &ucs4);
}
free(ucs4);
id3_tag_attachframe(tp, frame);
}
tp->options &= (~ID3_TAG_OPTION_COMPRESSION); // No compression
// If this version of libid3tag supports it, use v2.3 ID3
// tags instead of the newer, but less well supported, v2.4
// that libid3tag uses by default.
#ifdef ID3_TAG_HAS_TAG_OPTION_ID3V2_3
tp->options |= ID3_TAG_OPTION_ID3V2_3;
#endif
id3_length_t len;
len = id3_tag_render(tp, 0);
if (len == 0) {
id3_tag_delete(tp);
return;
}
id3_byte_t *buffer = (id3_byte_t *)malloc(len);
if (buffer == NULL) {
id3_tag_delete(tp);
return;
}
len = id3_tag_render(tp, buffer);
id3_tag_delete(tp);
wxFFile f(fName, wxT("r+b"));
if (f.IsOpened()) {
wxUint32 sz;
sz = wxUINT32_SWAP_ON_LE((wxUint32) len);
f.SeekEnd(0);
f.Write("ID3 ", 4);
f.Write(&sz, 4);
f.Write(buffer, len + (len & 0x01));
sz = wxUINT32_SWAP_ON_LE((wxUint32) f.Tell() - 8);
f.Seek(4);
f.Write(&sz, 4);
f.Close();
}
free(buffer);
#endif
return;
}
/** @param format The same information as the subformat argument to the Export
* method. Controls use of pre-defined export settings.*/
bool ExportPCM::DisplayOptions(wxWindow *parent, int format)
{
wxString nopt(_("There are no options for this format.\n"));
/* i18n-hint: This is pointing users at another possible export format in
* the list. So you should translate the quoted string
* 'Other uncompressed files' exactly the same as you do the same string
* when it comes up on it's own.*/
wxString usepcm(_("If you need more control over the export format please use the 'Other uncompressed files' format."));
/* actual code - decide what options if any are useful to show */
if(format == 1)
{ // 16-bit AIFF
wxMessageBox(nopt + _("Your file will be exported as a 16-bit AIFF (Apple/SGI) file.\n") + usepcm);
return true;
}
else if (format == 2)
{ // 16-bit WAV
wxMessageBox(nopt + _("Your file will be exported as a 16-bit WAV (Microsoft) file.\n") + usepcm);
return true;
}
else if (format == 3)
{ // GSM WAV
wxMessageBox(nopt + _("Your file will be exported as a GSM 6.10 WAV file.\n") + usepcm);
return true;
}
// default, full user control
ExportPCMOptions od(parent,format);
od.ShowModal();
return true;
}
wxString ExportPCM::GetExtension(int index)
{
if (index == 0) {
// get extension libsndfile thinks is correct for currently selected format
return sf_header_extension(ReadExportFormatPref());
}
else {
// return the default
return ExportPlugin::GetExtension(index);
}
}
//----------------------------------------------------------------------------
// Constructor
//----------------------------------------------------------------------------
ExportPlugin *New_ExportPCM()
{
return new ExportPCM();
}
// Indentation settings for Vim and Emacs and unique identifier for Arch, a
// version control system. Please do not modify past this point.
//
// Local Variables:
// c-basic-offset: 3
// indent-tabs-mode: nil
// End:
//
// vim: et sts=3 sw=3
// arch-tag: c1f32472-520f-4864-8086-3dba0d593e84
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