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audacia/src/export/ExportPCM.cpp

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/**********************************************************************
Audacity: A Digital Audio Editor
ExportPCM.cpp
Dominic Mazzoni
**********************************************************************/
#include "../Audacity.h"
#include "ExportPCM.h"
#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 "../FileFormats.h"
#include "../Internat.h"
#include "../Mix.h"
#include "../Prefs.h"
#include "../Project.h"
#include "../ShuttleGui.h"
#include "../Tags.h"
#include "../Track.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
struct
{
int format;
const wxChar *name;
const wxChar *desc;
}
static const kFormats[] =
{
{ SF_FORMAT_AIFF | SF_FORMAT_PCM_16, wxT("AIFF"), XO("AIFF (Apple) signed 16-bit PCM") },
{ SF_FORMAT_WAV | SF_FORMAT_PCM_16, wxT("WAV"), XO("WAV (Microsoft) signed 16-bit PCM") },
{ SF_FORMAT_WAV | SF_FORMAT_FLOAT, wxT("WAVFLT"), XO("WAV (Microsoft) 32-bit float PCM") },
// { SF_FORMAT_WAV | SF_FORMAT_GSM610, wxT("GSM610"), XO("GSM 6.10 WAV (mobile)") },
};
//----------------------------------------------------------------------------
// 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_HEADER_CHOICE 7102
#define ID_ENCODING_CHOICE 7103
class ExportPCMOptions final : public wxPanelWrapper
{
public:
ExportPCMOptions(wxWindow *parent, int format);
virtual ~ExportPCMOptions();
void PopulateOrExchange(ShuttleGui & S);
bool TransferDataToWindow();
bool TransferDataFromWindow();
void OnHeaderChoice(wxCommandEvent & evt);
private:
bool ValidatePair(int format);
int GetFormat();
private:
wxArrayString mHeaderNames;
wxArrayString mEncodingNames;
wxChoice *mHeaderChoice;
wxChoice *mEncodingChoice;
int mHeaderFromChoice;
int mEncodingFromChoice;
wxArrayInt mEncodingFormats;
DECLARE_EVENT_TABLE()
};
BEGIN_EVENT_TABLE(ExportPCMOptions, wxPanelWrapper)
EVT_CHOICE(ID_HEADER_CHOICE, ExportPCMOptions::OnHeaderChoice)
END_EVENT_TABLE()
ExportPCMOptions::ExportPCMOptions(wxWindow *parent, int selformat)
: wxPanelWrapper(parent, wxID_ANY)
{
int format;
if (selformat < 0 || selformat >= WXSIZEOF(kFormats))
{
format = ReadExportFormatPref();
}
else
{
format = kFormats[selformat].format;
}
mHeaderFromChoice = 0;
for (int i = 0, num = sf_num_headers(); i < num; i++) {
mHeaderNames.Add(sf_header_index_name(i));
if ((format & SF_FORMAT_TYPEMASK) == (int)sf_header_index_to_type(i))
mHeaderFromChoice = i;
}
mEncodingFromChoice = 0;
for (int i = 0, sel = 0, num = sf_num_encodings(); 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) == (int)sf_encoding_index_to_subtype(i))
mEncodingFromChoice = sel;
else
sel++;
}
}
ShuttleGui S(this, eIsCreatingFromPrefs);
PopulateOrExchange(S);
TransferDataToWindow();
TransferDataFromWindow();
}
ExportPCMOptions::~ExportPCMOptions()
{
TransferDataFromWindow();
}
void ExportPCMOptions::PopulateOrExchange(ShuttleGui & S)
{
S.StartVerticalLay();
{
S.StartHorizontalLay(wxCENTER);
{
S.StartMultiColumn(2, wxCENTER);
{
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.EndHorizontalLay();
}
S.EndVerticalLay();
return;
}
///
///
bool ExportPCMOptions::TransferDataToWindow()
{
return true;
}
///
///
bool ExportPCMOptions::TransferDataFromWindow()
{
ShuttleGui S(this, eIsSavingToPrefs);
PopulateOrExchange(S);
gPrefs->Flush();
WriteExportFormatPref(GetFormat());
return true;
}
void ExportPCMOptions::OnHeaderChoice(wxCommandEvent & WXUNUSED(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)
{
const auto name = sf_encoding_index_name(i);
mEncodingNames.Add(name);
mEncodingChoice->Append(name);
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());
TransferDataFromWindow();
}
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;
return sf_format_check(&info) != 0 ? true : false;
}
//----------------------------------------------------------------------------
// ExportPCM Class
//----------------------------------------------------------------------------
class ExportPCM final : public ExportPlugin
{
public:
ExportPCM();
// Required
wxWindow *OptionsCreate(wxWindow *parent, int format);
int Export(AudacityProject *project,
int channels,
const wxString &fName,
bool selectedOnly,
double t0,
double t1,
MixerSpec *mixerSpec = NULL,
const Tags *metadata = NULL,
int subformat = 0) override;
// optional
wxString GetExtension(int index);
bool CheckFileName(wxFileName &filename, int format) override;
private:
char *AdjustString(const wxString & wxStr, int sf_format);
bool AddStrings(AudacityProject *project, SNDFILE *sf, const Tags *tags, int sf_format);
void AddID3Chunk(wxString fName, const Tags *tags, int sf_format);
};
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 the "special" formats first
for (size_t i = 0; i < WXSIZEOF(kFormats); i++)
{
format = AddFormat() - 1;
si.format = kFormats[i].format;
for (si.channels = 1; sf_format_check(&si); si.channels++){};
wxString ext = sf_header_extension(si.format);
SetFormat(kFormats[i].name, format);
SetCanMetaData(true, format);
SetDescription(wxGetTranslation(kFormats[i].desc), format);
AddExtension(ext, format);
SetMaxChannels(si.channels - 1, format);
}
// Then add the generic libsndfile formats
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);
}
/**
*
* @param subformat Control whether we are doing a "preset" export to a popular
* file type, or giving the user full control over libsndfile.
*/
int ExportPCM::Export(AudacityProject *project,
int numChannels,
const wxString &fName,
bool selectionOnly,
double t0,
double t1,
MixerSpec *mixerSpec,
const Tags *metadata,
int subformat)
{
double rate = project->GetRate();
const TrackList *tracks = project->GetTracks();
int sf_format;
if (subformat < 0 || subformat >= WXSIZEOF(kFormats))
{
sf_format = ReadExportFormatPref();
}
else
{
sf_format = kFormats[subformat].format;
}
int updateResult = eProgressSuccess;
{
wxFile f; // will be closed when it goes out of scope
SFFile sf; // wraps f
wxString formatStr;
SF_INFO info;
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.
formatStr = SFCall<wxString>(sf_header_name, sf_format & SF_FORMAT_TYPEMASK);
// 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;
}
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).
sf.reset(SFCall<SNDFILE*>(sf_open_fd, f.fd(), SFM_WRITE, &info, FALSE));
//add clipping for integer formats. We allow floats to clip.
sf_command(sf.get(), SFC_SET_CLIPPING, NULL, sf_subtype_is_integer(sf_format)?SF_TRUE:SF_FALSE) ;
}
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();
// Install the metata at the beginning of the file (except for
// WAV and WAVEX formats)
if ((sf_format & SF_FORMAT_TYPEMASK) != SF_FORMAT_WAV &&
(sf_format & SF_FORMAT_TYPEMASK) != SF_FORMAT_WAVEX) {
if (!AddStrings(project, sf.get(), metadata, sf_format)) {
return false;
}
}
sampleFormat format;
if (sf_subtype_more_than_16_bits(info.format))
format = floatSample;
else
format = int16Sample;
int maxBlockLen = 44100 * 5;
const WaveTrackConstArray waveTracks =
tracks->GetWaveTrackConstArray(selectionOnly, false);
{
auto mixer = CreateMixer(waveTracks,
tracks->GetTimeTrack(),
t0, t1,
info.channels, maxBlockLen, true,
rate, format, true, mixerSpec);
ProgressDialog progress(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();
if (format == int16Sample)
samplesWritten = SFCall<sf_count_t>(sf_writef_short, sf.get(), (short *)mixed, numSamples);
else
samplesWritten = SFCall<sf_count_t>(sf_writef_float, sf.get(), (float *)mixed, numSamples);
if (samplesWritten != numSamples) {
char buffer2[1000];
sf_error_str(sf.get(), 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);
}
}
// Install the WAV metata in a "LIST" chunk at the end of the file
if ((sf_format & SF_FORMAT_TYPEMASK) == SF_FORMAT_WAV ||
(sf_format & SF_FORMAT_TYPEMASK) == SF_FORMAT_WAVEX) {
if (!AddStrings(project, sf.get(), metadata, sf_format)) {
return false;
}
}
}
if (((sf_format & SF_FORMAT_TYPEMASK) == SF_FORMAT_AIFF) ||
((sf_format & SF_FORMAT_TYPEMASK) == SF_FORMAT_WAV))
AddID3Chunk(fName, metadata, sf_format);
return updateResult;
}
char *ExportPCM::AdjustString(const wxString & wxStr, int sf_format)
{
bool b_aiff = false;
if ((sf_format & SF_FORMAT_TYPEMASK) == SF_FORMAT_AIFF)
b_aiff = true; // Apple AIFF file
// We must convert the string to 7 bit ASCII
size_t sz = wxStr.length();
if(sz == 0)
return NULL;
// Size for secure malloc in case of local wide char usage
size_t sr = (sz+4) * 2;
char *pDest = (char *)malloc(sr);
if (!pDest)
return NULL;
char *pSrc = (char *)malloc(sr);
if (!pSrc)
{
free(pDest);
return NULL;
}
memset(pDest, 0, sr);
memset(pSrc, 0, sr);
if(wxStr.mb_str(wxConvISO8859_1))
strncpy(pSrc, wxStr.mb_str(wxConvISO8859_1), sz);
else if(wxStr.mb_str())
strncpy(pSrc, wxStr.mb_str(), sz);
else {
free(pDest);
free(pSrc);
return NULL;
}
char *pD = pDest;
char *pS = pSrc;
unsigned char c;
// ISO Latin to 7 bit ascii conversion table (best approximation)
static char aASCII7Table[256] = {
0x00, 0x5f, 0x5f, 0x5f, 0x5f, 0x5f, 0x5f, 0x5f,
0x5f, 0x09, 0x0a, 0x5f, 0x0d, 0x5f, 0x5f, 0x5f,
0x5f, 0x5f, 0x5f, 0x5f, 0x5f, 0x5f, 0x5f, 0x5f,
0x5f, 0x5f, 0x5f, 0x5f, 0x5f, 0x5f, 0x5f, 0x5f,
0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27,
0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f,
0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37,
0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f,
0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47,
0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f,
0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57,
0x58, 0x59, 0x5a, 0x5b, 0x5c, 0x5d, 0x5e, 0x5f,
0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67,
0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f,
0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77,
0x78, 0x79, 0x7a, 0x7b, 0x7c, 0x7d, 0x7e, 0x7f,
0x45, 0x20, 0x2c, 0x53, 0x22, 0x2e, 0x2b, 0x2b,
0x5e, 0x25, 0x53, 0x28, 0x4f, 0x20, 0x5a, 0x20,
0x20, 0x27, 0x27, 0x22, 0x22, 0x2e, 0x2d, 0x5f,
0x22, 0x54, 0x73, 0x29, 0x6f, 0x20, 0x7a, 0x59,
0x20, 0x21, 0x63, 0x4c, 0x6f, 0x59, 0x7c, 0x53,
0x22, 0x43, 0x61, 0x22, 0x5f, 0x2d, 0x43, 0x2d,
0x6f, 0x7e, 0x32, 0x33, 0x27, 0x75, 0x50, 0x27,
0x2c, 0x31, 0x6f, 0x22, 0x5f, 0x5f, 0x5f, 0x3f,
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x43,
0x45, 0x45, 0x45, 0x45, 0x49, 0x49, 0x49, 0x49,
0x44, 0x4e, 0x4f, 0x4f, 0x4f, 0x4f, 0x4f, 0x78,
0x4f, 0x55, 0x55, 0x55, 0x55, 0x59, 0x70, 0x53,
0x61, 0x61, 0x61, 0x61, 0x61, 0x61, 0x61, 0x63,
0x65, 0x65, 0x65, 0x65, 0x69, 0x69, 0x69, 0x69,
0x64, 0x6e, 0x6f, 0x6f, 0x6f, 0x6f, 0x6f, 0x2f,
0x6f, 0x75, 0x75, 0x75, 0x75, 0x79, 0x70, 0x79
};
size_t i;
for(i = 0; i < sr; i++) {
c = (unsigned char) *pS++;
*pD++ = aASCII7Table[c];
if(c == 0)
break;
}
*pD = '\0';
free(pSrc);
if(b_aiff) {
int len = (int)strlen(pDest);
if((len % 2) != 0) {
// In case of an odd length string, add a space char
strcat(pDest, " ");
}
}
return pDest;
}
bool ExportPCM::AddStrings(AudacityProject * WXUNUSED(project), SNDFILE *sf, const Tags *tags, int sf_format)
{
if (tags->HasTag(TAG_TITLE)) {
char * ascii7Str = AdjustString(tags->GetTag(TAG_TITLE), sf_format);
if (ascii7Str) {
sf_set_string(sf, SF_STR_TITLE, ascii7Str);
free(ascii7Str);
}
}
if (tags->HasTag(TAG_ALBUM)) {
char * ascii7Str = AdjustString(tags->GetTag(TAG_ALBUM), sf_format);
if (ascii7Str) {
sf_set_string(sf, SF_STR_ALBUM, ascii7Str);
free(ascii7Str);
}
}
if (tags->HasTag(TAG_ARTIST)) {
char * ascii7Str = AdjustString(tags->GetTag(TAG_ARTIST), sf_format);
if (ascii7Str) {
sf_set_string(sf, SF_STR_ARTIST, ascii7Str);
free(ascii7Str);
}
}
if (tags->HasTag(TAG_COMMENTS)) {
char * ascii7Str = AdjustString(tags->GetTag(TAG_COMMENTS), sf_format);
if (ascii7Str) {
sf_set_string(sf, SF_STR_COMMENT, ascii7Str);
free(ascii7Str);
}
}
if (tags->HasTag(TAG_YEAR)) {
char * ascii7Str = AdjustString(tags->GetTag(TAG_YEAR), sf_format);
if (ascii7Str) {
sf_set_string(sf, SF_STR_DATE, ascii7Str);
free(ascii7Str);
}
}
if (tags->HasTag(TAG_GENRE)) {
char * ascii7Str = AdjustString(tags->GetTag(TAG_GENRE), sf_format);
if (ascii7Str) {
sf_set_string(sf, SF_STR_GENRE, ascii7Str);
free(ascii7Str);
}
}
if (tags->HasTag(TAG_COPYRIGHT)) {
char * ascii7Str = AdjustString(tags->GetTag(TAG_COPYRIGHT), sf_format);
if (ascii7Str) {
sf_set_string(sf, SF_STR_COPYRIGHT, ascii7Str);
free(ascii7Str);
}
}
if (tags->HasTag(TAG_SOFTWARE)) {
char * ascii7Str = AdjustString(tags->GetTag(TAG_SOFTWARE), sf_format);
if (ascii7Str) {
sf_set_string(sf, SF_STR_SOFTWARE, ascii7Str);
free(ascii7Str);
}
}
if (tags->HasTag(TAG_TRACK)) {
char * ascii7Str = AdjustString(tags->GetTag(TAG_TRACK), sf_format);
if (ascii7Str) {
sf_set_string(sf, SF_STR_TRACKNUMBER, ascii7Str);
free(ascii7Str);
}
}
return true;
}
void ExportPCM::AddID3Chunk(wxString fName, const Tags *tags, int sf_format)
{
#ifdef USE_LIBID3TAG
struct id3_tag *tp = id3_tag_new();
for (const auto &pair : tags->GetRange()) {
const auto &n = pair.first;
const auto &v = pair.second;
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;
}
else if (n.CmpNoCase(wxT("composer")) == 0) {
name = "TCOM";
}
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;
}
if ((len % 2) != 0) len++; // Length must be even.
id3_byte_t *buffer = (id3_byte_t *)malloc(len);
if (buffer == NULL) {
id3_tag_delete(tp);
return;
}
// Zero all locations, for ending odd UTF16 content
// correctly, i.e., two '\0's at the end.
memset(buffer, 0, len);
id3_tag_render(tp, buffer);
id3_tag_delete(tp);
wxFFile f(fName, wxT("r+b"));
if (f.IsOpened()) {
wxUint32 sz;
sz = (wxUint32) len;
f.SeekEnd(0);
if ((sf_format & SF_FORMAT_TYPEMASK) == SF_FORMAT_WAV)
f.Write("id3 ", 4); // Must be lower case for foobar2000.
else {
f.Write("ID3 ", 4);
sz = wxUINT32_SWAP_ON_LE(sz);
}
f.Write(&sz, 4);
f.Write(buffer, len);
sz = (wxUint32) f.Tell() - 8;
if ((sf_format & SF_FORMAT_TYPEMASK) == SF_FORMAT_AIFF)
sz = wxUINT32_SWAP_ON_LE(sz);
f.Seek(4);
f.Write(&sz, 4);
f.Close();
}
free(buffer);
#endif
return;
}
wxWindow *ExportPCM::OptionsCreate(wxWindow *parent, int format)
{
wxASSERT(parent); // to justify safenew
// default, full user control
if (format < 0 || format >= WXSIZEOF(kFormats))
{
return safenew ExportPCMOptions(parent, format);
}
return ExportPlugin::OptionsCreate(parent, format);
}
wxString ExportPCM::GetExtension(int index)
{
if (index == WXSIZEOF(kFormats)) {
// get extension libsndfile thinks is correct for currently selected format
return sf_header_extension(ReadExportFormatPref());
}
else {
// return the default
return ExportPlugin::GetExtension(index);
}
}
bool ExportPCM::CheckFileName(wxFileName &filename, int format)
{
if (format == WXSIZEOF(kFormats) &&
IsExtension(filename.GetExt(), format)) {
// PRL: Bug1217
// If the user left the extension blank, then the
// file dialog will have defaulted the extension, beyond our control,
// to the first in the wildcard list or (Linux) the last-saved extension,
// ignoring what we try to do with the additional drop-down mHeaderChoice.
// Here we can intercept file name processing and impose the correct default.
// However this has the consequence that in case an explicit extension was typed,
// we override it without asking.
filename.SetExt(GetExtension(format));
}
return ExportPlugin::CheckFileName(filename, format);
}
movable_ptr<ExportPlugin> New_ExportPCM()
{
return make_movable<ExportPCM>();
}
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