int ExportFLAC::Export(AudacityProject *project,
int numChannels,
const wxString &fName,
bool selectionOnly,
double t0,
double t1,
MixerSpec *mixerSpec,
const Tags *metadata,
int WXUNUSED(subformat))
{
double rate = project->GetRate();
TrackList *tracks = project->GetTracks();
wxLogNull logNo; // temporarily disable wxWidgets error messages
int updateResult = eProgressSuccess;
int levelPref;
gPrefs->Read(wxT("/FileFormats/FLACLevel"), &levelPref, 5);
wxString bitDepthPref =
gPrefs->Read(wxT("/FileFormats/FLACBitDepth"), wxT("16"));
FLAC::Encoder::File encoder;
#ifdef LEGACY_FLAC
encoder.set_filename(OSOUTPUT(fName));
#endif
encoder.set_channels(numChannels);
encoder.set_sample_rate(lrint(rate));
// See note in GetMetadata() about a bug in libflac++ 1.1.2
if (!GetMetadata(project, metadata)) {
return false;
}
if (mMetadata) {
encoder.set_metadata(&mMetadata, 1);
}
sampleFormat format;
if (bitDepthPref == wxT("24")) {
format = int24Sample;
encoder.set_bits_per_sample(24);
} else { //convert float to 16 bits
format = int16Sample;
encoder.set_bits_per_sample(16);
}
// Duplicate the flac command line compression levels
if (levelPref < 0 || levelPref > 8) {
levelPref = 5;
}
encoder.set_do_exhaustive_model_search(flacLevels[levelPref].do_exhaustive_model_search);
encoder.set_do_escape_coding(flacLevels[levelPref].do_escape_coding);
if (numChannels != 2) {
encoder.set_do_mid_side_stereo(false);
encoder.set_loose_mid_side_stereo(false);
}
else {
encoder.set_do_mid_side_stereo(flacLevels[levelPref].do_mid_side_stereo);
encoder.set_loose_mid_side_stereo(flacLevels[levelPref].loose_mid_side_stereo);
}
encoder.set_qlp_coeff_precision(flacLevels[levelPref].qlp_coeff_precision);
encoder.set_min_residual_partition_order(flacLevels[levelPref].min_residual_partition_order);
encoder.set_max_residual_partition_order(flacLevels[levelPref].max_residual_partition_order);
encoder.set_rice_parameter_search_dist(flacLevels[levelPref].rice_parameter_search_dist);
encoder.set_max_lpc_order(flacLevels[levelPref].max_lpc_order);
#ifdef LEGACY_FLAC
encoder.init();
#else
wxFFile f; // will be closed when it goes out of scope
if (!f.Open(fName, wxT("w+b"))) {
wxMessageBox(wxString::Format(_("FLAC export couldn't open %s"), fName.c_str()));
return false;
}
// Even though there is an init() method that takes a filename, use the one that
// takes a file handle because wxWidgets can open a file with a Unicode name and
// libflac can't (under Windows).
int status = encoder.init(f.fp());
if (status != FLAC__STREAM_ENCODER_INIT_STATUS_OK) {
wxMessageBox(wxString::Format(_("FLAC encoder failed to initialize\nStatus: %d"), status));
return false;
}
#endif
if (mMetadata) {
::FLAC__metadata_object_delete(mMetadata);
}
int numWaveTracks;
WaveTrack **waveTracks;
tracks->GetWaveTracks(selectionOnly, &numWaveTracks, &waveTracks);
Mixer *mixer = CreateMixer(numWaveTracks, waveTracks,
tracks->GetTimeTrack(),
t0, t1,
numChannels, SAMPLES_PER_RUN, false,
rate, format, true, mixerSpec);
delete [] waveTracks;
int i, j;
FLAC__int32 **tmpsmplbuf = new FLAC__int32*[numChannels];
for (i = 0; i < numChannels; i++) {
tmpsmplbuf[i] = (FLAC__int32 *) calloc(SAMPLES_PER_RUN, sizeof(FLAC__int32));
}
{
ProgressDialog progress(wxFileName(fName).GetName(),
selectionOnly ?
_("Exporting the selected audio as FLAC") :
_("Exporting the entire project as FLAC"));
while (updateResult == eProgressSuccess) {
sampleCount samplesThisRun = mixer->Process(SAMPLES_PER_RUN);
if (samplesThisRun == 0) { //stop encoding
break;
}
else {
for (i = 0; i < numChannels; i++) {
samplePtr mixed = mixer->GetBuffer(i);
if (format == int24Sample) {
for (j = 0; j < samplesThisRun; j++) {
tmpsmplbuf[i][j] = ((int *)mixed)[j];
}
}
else {
for (j = 0; j < samplesThisRun; j++) {
tmpsmplbuf[i][j] = ((short *)mixed)[j];
}
}
}
encoder.process(tmpsmplbuf, samplesThisRun);
}
updateResult = progress.Update(mixer->MixGetCurrentTime() - t0, t1 - t0);
}
f.Detach(); // libflac closes the file
encoder.finish();
}
for (i = 0; i < numChannels; i++) {
free(tmpsmplbuf[i]);
}
delete mixer;
delete[] tmpsmplbuf;
return updateResult;
}
/**
* dop_track_helper
*/
int dop_track_helper(
boost::filesystem::path outpath,
DsdSampleReader* dsr,
dsf2flac_int64 startPos,
dsf2flac_int64 endPos,
ID3_Tag id3tag)
{
// double check the start and end positions!
if ( startPos > dsr->getLength()-1 )
startPos = dsr->getLength()-1;
if ( endPos > dsr->getLength() )
endPos = dsr->getLength();
// create a dop packer object.
DopPacker dopp = DopPacker(dsr);
// flac vars
bool ok = true;
FLAC::Encoder::File encoder;
FLAC__StreamEncoderInitStatus init_status;
FLAC__StreamMetadata *metadata[2];
// setup the encoder
if(!encoder) {
fprintf(stderr, "ERROR: allocating encoder\n");
return 0;
}
ok &= encoder.set_verify(true);
ok &= encoder.set_compression_level(5);
ok &= encoder.set_channels(dsr->getNumChannels());
ok &= encoder.set_bits_per_sample(24);
if ( dsr->getSamplingFreq() == 2822400 ) {
ok &= encoder.set_sample_rate(176400);
} else if ( dsr->getSamplingFreq() == 5644800 ) {
ok &= encoder.set_sample_rate(352800);
} else {
fprintf(stderr, "ERROR: sample rate not supported by DoP\n");
return 0;
}
ok &= encoder.set_total_samples_estimate((endPos - startPos)/16);
// add tags and a padding block
if(ok) {
metadata[0] = id3v2_to_flac( id3tag );
metadata[1] = FLAC__metadata_object_new(FLAC__METADATA_TYPE_PADDING);
metadata[1]->length = 2048; /* set the padding length */
ok = encoder.set_metadata(metadata, 2);
}
// initialize encoder
if(ok) {
init_status = encoder.init(outpath.c_str());
if(init_status != FLAC__STREAM_ENCODER_INIT_STATUS_OK) {
fprintf(stderr, "ERROR: initializing encoder: %s\n", FLAC__StreamEncoderInitStatusString[init_status]);
ok = false;
}
}
// return if there is a problem with any of the flac stuff.
if (!ok)
return ok;
// creep up to the start point.
while (dsr->getPosition() < startPos) {
dsr->step();
}
// create a FLAC__int32 buffer to hold the samples as they are converted
unsigned int bufferLen = dsr->getNumChannels()*flacBlockLen;
FLAC__int32* buffer = new FLAC__int32[bufferLen];
// MAIN CONVERSION LOOP //
while (dsr->getPosition() <= endPos-flacBlockLen*16) {
dopp.pack_buffer(buffer,bufferLen);
if(!(ok = encoder.process_interleaved(buffer, flacBlockLen)))
fprintf(stderr, " state: %s\n", encoder.get_state().resolved_as_cstring(encoder));
checkTimer(dsr->getPositionInSeconds(),dsr->getPositionAsPercent());
}
// delete the old buffer and make a new one with a single sample per chan
delete[] buffer;
buffer = new FLAC__int32[dsr->getNumChannels()];
// creep up to the end
while (dsr->getPosition() <= endPos) {
dopp.pack_buffer(buffer,dsr->getNumChannels());
if(!(ok = encoder.process_interleaved(buffer, 1)))
fprintf(stderr, " state: %s\n", encoder.get_state().resolved_as_cstring(encoder));
checkTimer(dsr->getPositionInSeconds(),dsr->getPositionAsPercent());
}
delete[] buffer;
// close the flac file
ok &= encoder.finish();
// report back to the user
printf("\33[2K\r");
printf("%3.1f%%\t",dsr->getPositionAsPercent());
if (ok) {
printf("Conversion completed sucessfully.\n");
} else {
printf("\nError during conversion.\n");
fprintf(stderr, "encoding: %s\n", ok? "succeeded" : "FAILED");
fprintf(stderr, " state: %s\n", encoder.get_state().resolved_as_cstring(encoder));
}
// free things
FLAC__metadata_object_delete(metadata[0]);
FLAC__metadata_object_delete(metadata[1]);
return ok;
return ok;
}
