SoundSource::OpenResult SoundSourceOpus::tryOpen(const AudioSourceConfig& /*audioSrcCfg*/) {
// From opus/opusfile.h
// On Windows, this string must be UTF-8 (to allow access to
// files whose names cannot be represented in the current
// MBCS code page).
// All other systems use the native character encoding.
#ifdef _WIN32
QByteArray qBAFilename = getLocalFileName().toUtf8();
#else
QByteArray qBAFilename = getLocalFileName().toLocal8Bit();
#endif
int errorCode = 0;
DEBUG_ASSERT(!m_pOggOpusFile);
m_pOggOpusFile = op_open_file(qBAFilename.constData(), &errorCode);
if (!m_pOggOpusFile) {
qWarning() << "Failed to open OggOpus file:" << getUrlString()
<< "errorCode" << errorCode;
return OpenResult::FAILED;
}
if (!op_seekable(m_pOggOpusFile)) {
qWarning() << "SoundSourceOpus:"
<< "Stream in"
<< getUrlString()
<< "is not seekable";
return OpenResult::UNSUPPORTED_FORMAT;
}
const int channelCount = op_channel_count(m_pOggOpusFile, kCurrentStreamLink);
if (0 < channelCount) {
setChannelCount(channelCount);
} else {
qWarning() << "Failed to read channel configuration of OggOpus file:" << getUrlString();
return OpenResult::FAILED;
}
const ogg_int64_t pcmTotal = op_pcm_total(m_pOggOpusFile, kEntireStreamLink);
if (0 <= pcmTotal) {
setFrameCount(pcmTotal);
} else {
qWarning() << "Failed to read total length of OggOpus file:" << getUrlString();
return OpenResult::FAILED;
}
const opus_int32 bitrate = op_bitrate(m_pOggOpusFile, kEntireStreamLink);
if (0 < bitrate) {
setBitrate(bitrate / 1000);
} else {
qWarning() << "Failed to determine bitrate of OggOpus file:" << getUrlString();
return OpenResult::FAILED;
}
setSamplingRate(kSamplingRate);
m_curFrameIndex = getMinFrameIndex();
return OpenResult::SUCCEEDED;
}
/*
* et_opus_read_file_info:
* @file: file to read info from
* @ETFileInfo: ET_File_Info to put information into
* @error: a GError or %NULL
*
* Read header information of an Opus file.
*
* Returns: %TRUE if successful otherwise %FALSE
*/
gboolean
et_opus_read_file_info (GFile *gfile, ET_File_Info *ETFileInfo,
GError **error)
{
OggOpusFile *file;
const OpusHead* head;
GFileInfo *info;
g_return_val_if_fail (gfile != NULL && ETFileInfo != NULL, FALSE);
g_return_val_if_fail (error == NULL || *error == NULL, FALSE);
file = et_opus_open_file (gfile, error);
if (!file)
{
g_assert (error == NULL || *error != NULL);
return FALSE;
}
/* FIXME: Improve error-checking. */
head = op_head (file, -1);
/* TODO: Read the vendor string from the Vorbis comment? */
ETFileInfo->version = head->version;
ETFileInfo->bitrate = op_bitrate (file, -1) / 1000;
ETFileInfo->mode = head->channel_count;
/* All Opus audio is encoded at 48 kHz, but the input sample rate can
* differ, and then input_sample_rate will be set. */
if (head->input_sample_rate != 0)
{
ETFileInfo->samplerate = head->input_sample_rate;
}
else
{
ETFileInfo->samplerate = 48000;
}
ETFileInfo->duration = op_pcm_total (file, -1) / 48000;
op_free (file);
info = g_file_query_info (gfile, G_FILE_ATTRIBUTE_STANDARD_SIZE,
G_FILE_QUERY_INFO_NONE, NULL, NULL);
if (info)
{
ETFileInfo->size = g_file_info_get_size (info);
g_object_unref (info);
}
else
{
ETFileInfo->size = 0;
}
g_assert (error == NULL || *error == NULL);
return TRUE;
}
/*
Parse the the file to get metadata
*/
Result SoundSourceOpus::parseHeader() {
int error = 0;
QByteArray qBAFilename = m_qFilename.toLocal8Bit();
OggOpusFile *l_ptrOpusFile = op_open_file(qBAFilename.constData(), &error);
this->setBitrate((int)op_bitrate(l_ptrOpusFile, -1) / 1000);
this->setSampleRate(48000);
this->setChannels(2);
qint64 l_lLength = op_pcm_total(l_ptrOpusFile, -1) * 2;
this->setDuration(l_lLength / (48000 * 2));
this->setType("opus");
// If we don't have new enough Taglib we use libopusfile parser!
#if (TAGLIB_MAJOR_VERSION >= 1) && (TAGLIB_MINOR_VERSION >= 9)
TagLib::Ogg::Opus::File f(qBAFilename.constData());
// Takes care of all the default metadata
bool result = processTaglibFile(f);
TagLib::Ogg::XiphComment *tag = f.tag();
if (tag) {
processXiphComment(tag);
}
#else
// From Taglib 1.9.x Opus is supported
// Before that we have parse tags by this code
int i = 0;
const OpusTags *l_ptrOpusTags = op_tags(l_ptrOpusFile, -1);
// This is left for debug reasons !!
// qDebug() << "opus: We have " << l_ptrOpusTags->comments;
for( i = 0; i < l_ptrOpusTags->comments; i ++){
QString l_SWholeTag = QString(l_ptrOpusTags->user_comments[i]);
QString l_STag = l_SWholeTag.left(l_SWholeTag.indexOf("="));
QString l_SPayload = l_SWholeTag.right((l_SWholeTag.length() - l_SWholeTag.indexOf("=")) - 1);
if (!l_STag.compare("ARTIST") ) {
this->setArtist(l_SPayload);
} else if (!l_STag.compare("ALBUM")) {
this->setAlbum(l_SPayload);
} else if (!l_STag.compare("BPM")) {
this->setBPM(l_SPayload.toFloat());
} else if (!l_STag.compare("YEAR") || !l_STag.compare("DATE")) {
this->setYear(l_SPayload);
} else if (!l_STag.compare("GENRE")) {
this->setGenre(l_SPayload);
} else if (!l_STag.compare("TRACKNUMBER")) {
this->setTrackNumber(l_SPayload);
} else if (!l_STag.compare("COMPOSER")) {
this->setComposer(l_SPayload);
} else if (!l_STag.compare("ALBUMARTIST")) {
this->setAlbumArtist(l_SPayload);
} else if (!l_STag.compare("TITLE")) {
this->setTitle(l_SPayload);
} else if (!l_STag.compare("REPLAYGAIN_TRACK_PEAK")) {
} else if (!l_STag.compare("REPLAYGAIN_TRACK_GAIN")) {
this->parseReplayGainString (l_SPayload);
} else if (!l_STag.compare("REPLAYGAIN_ALBUM_PEAK")) {
} else if (!l_STag.compare("REPLAYGAIN_ALBUM_GAIN")) {
}
// This is left fot debug reasons!!
//qDebug() << "Comment" << i << l_ptrOpusTags->comment_lengths[i] <<
//" (" << l_ptrOpusTags->user_comments[i] << ")" << l_STag << "*" << l_SPayload;
}
op_free(l_ptrOpusFile);
return OK;
#endif
#if TAGLIB_MAJOR_VERSION >= 1 && TAGLIB_MINOR_VERSION >= 9
return result ? OK : ERR;
#endif
}
Result SoundSourceOpus::parseTrackMetadataAndCoverArt(
TrackMetadata* pTrackMetadata,
QImage* pCoverArt) const {
if (OK == SoundSource::parseTrackMetadataAndCoverArt(
pTrackMetadata, pCoverArt)) {
// Done if the default implementation in the base class
// supports Opus files.
return OK;
}
// Beginning with version 1.9.0 TagLib supports the Opus format.
// Until this becomes the minimum version required by Mixxx tags
// in .opus files must also be parsed using opusfile. The following
// code should removed as soon as it is no longer needed!
//
// NOTE(uklotzde): The following code has been found in SoundSourceOpus
// and will not be improved. We are aware of its shortcomings like
// the lack of proper error handling.
// From opus/opusfile.h
// On Windows, this string must be UTF-8 (to allow access to
// files whose names cannot be represented in the current
// MBCS code page).
// All other systems use the native character encoding.
#ifdef _WIN32
QByteArray qBAFilename = getLocalFileName().toUtf8();
#else
QByteArray qBAFilename = getLocalFileName().toLocal8Bit();
#endif
int error = 0;
OggOpusFileOwner l_ptrOpusFile(
op_open_file(qBAFilename.constData(), &error));
int i = 0;
const OpusTags *l_ptrOpusTags = op_tags(l_ptrOpusFile, -1);
pTrackMetadata->setChannels(op_channel_count(l_ptrOpusFile, -1));
pTrackMetadata->setSampleRate(Mixxx::SoundSourceOpus::kSamplingRate);
pTrackMetadata->setBitrate(op_bitrate(l_ptrOpusFile, -1) / 1000);
pTrackMetadata->setDuration(
op_pcm_total(l_ptrOpusFile, -1) / pTrackMetadata->getSampleRate());
bool hasDate = false;
for (i = 0; i < l_ptrOpusTags->comments; ++i) {
QString l_SWholeTag = QString(l_ptrOpusTags->user_comments[i]);
QString l_STag = l_SWholeTag.left(l_SWholeTag.indexOf("="));
QString l_SPayload = l_SWholeTag.right((l_SWholeTag.length() - l_SWholeTag.indexOf("=")) - 1);
if (!l_STag.compare("ARTIST")) {
pTrackMetadata->setArtist(l_SPayload);
} else if (!l_STag.compare("ALBUM")) {
pTrackMetadata->setAlbum(l_SPayload);
} else if (!l_STag.compare("BPM")) {
pTrackMetadata->setBpm(l_SPayload.toFloat());
} else if (!l_STag.compare("DATE")) {
// Prefer "DATE" over "YEAR"
pTrackMetadata->setYear(l_SPayload.trimmed());
// Avoid to overwrite "DATE" with "YEAR"
hasDate |= !pTrackMetadata->getYear().isEmpty();
} else if (!hasDate && !l_STag.compare("YEAR")) {
pTrackMetadata->setYear(l_SPayload.trimmed());
} else if (!l_STag.compare("GENRE")) {
pTrackMetadata->setGenre(l_SPayload);
} else if (!l_STag.compare("TRACKNUMBER")) {
pTrackMetadata->setTrackNumber(l_SPayload);
} else if (!l_STag.compare("COMPOSER")) {
pTrackMetadata->setComposer(l_SPayload);
} else if (!l_STag.compare("ALBUMARTIST")) {
pTrackMetadata->setAlbumArtist(l_SPayload);
} else if (!l_STag.compare("TITLE")) {
pTrackMetadata->setTitle(l_SPayload);
} else if (!l_STag.compare("REPLAYGAIN_TRACK_GAIN")) {
bool trackGainRatioValid = false;
double trackGainRatio = ReplayGain::parseGain2Ratio(l_SPayload, &trackGainRatioValid);
if (trackGainRatioValid) {
ReplayGain trackGain(pTrackMetadata->getReplayGain());
trackGain.setRatio(trackGainRatio);
pTrackMetadata->setReplayGain(trackGain);
}
}
// This is left fot debug reasons!!
//qDebug() << "Comment" << i << l_ptrOpusTags->comment_lengths[i] <<
//" (" << l_ptrOpusTags->user_comments[i] << ")" << l_STag << "*" << l_SPayload;
}
return OK;
}
