void CddaDevice::Init() {
QMutexLocker locker(&mutex_init_);
song_count_ = 0; // Reset song count, in case it was already set
cdio_ = cdio_open (url_.path().toLocal8Bit().constData(), DRIVER_DEVICE);
if (cdio_ == NULL) {
return;
}
// Create gstreamer cdda element
cdda_ = gst_element_make_from_uri (GST_URI_SRC, "cdda://", NULL);
if (cdda_ == NULL) {
model_->Reset();
return;
}
GST_CDDA_BASE_SRC(cdda_)->device = g_strdup (url_.path().toLocal8Bit().constData());
// Change the element's state to ready and paused, to be able to query it
if (gst_element_set_state(cdda_, GST_STATE_READY) == GST_STATE_CHANGE_FAILURE ||
gst_element_set_state(cdda_, GST_STATE_PAUSED) == GST_STATE_CHANGE_FAILURE) {
model_->Reset();
gst_element_set_state(cdda_, GST_STATE_NULL);
gst_object_unref(GST_OBJECT(cdda_));
return;
}
// Get number of tracks
GstFormat fmt = gst_format_get_by_nick ("track");
GstFormat out_fmt = fmt;
gint64 num_tracks = 0;
if (!gst_element_query_duration (cdda_, &out_fmt, &num_tracks) || out_fmt != fmt) {
qLog(Error) << "Error while querying cdda GstElement";
model_->Reset();
gst_object_unref(GST_OBJECT(cdda_));
return;
}
SongList songs;
for (int track_number = 1; track_number <= num_tracks; track_number++) {
// Init song
Song song;
guint64 duration = 0;
// quint64 == ulonglong and guint64 == ulong, therefore we must cast
if (gst_tag_list_get_uint64 (GST_CDDA_BASE_SRC(cdda_)->tracks[track_number-1].tags,
GST_TAG_DURATION, &duration)) {
song.set_length_nanosec((quint64)duration);
}
song.set_id(track_number);
song.set_valid(true);
song.set_filetype(Song::Type_Cdda);
song.set_url(QUrl(QString("cdda://%1/%2").arg(url_.path()).arg(track_number)));
song.set_title(QString("Track %1").arg(track_number));
song.set_track(track_number);
songs << song;
}
song_count_ = num_tracks;
connect(this, SIGNAL(SongsDiscovered(const SongList&)), model_, SLOT(SongsDiscovered(const SongList&)));
emit SongsDiscovered(songs);
// Generate MusicBrainz DiscId
gst_tag_register_musicbrainz_tags();
GstElement *pipe = gst_pipeline_new ("pipeline");
gst_bin_add (GST_BIN (pipe), cdda_);
gst_element_set_state (pipe, GST_STATE_READY);
gst_element_set_state (pipe, GST_STATE_PAUSED);
GstMessage *msg = gst_bus_timed_pop_filtered (GST_ELEMENT_BUS (pipe),
GST_CLOCK_TIME_NONE,
GST_MESSAGE_TAG);
GstTagList *tags = NULL;
gst_message_parse_tag (msg, &tags);
char *string_mb = NULL;
if (gst_tag_list_get_string (tags, GST_TAG_CDDA_MUSICBRAINZ_DISCID, &string_mb)) {
QString musicbrainz_discid(string_mb);
qLog(Info) << "MusicBrainz discid: " << musicbrainz_discid;
MusicBrainzClient *musicbrainz_client = new MusicBrainzClient(this);
connect(musicbrainz_client,
SIGNAL(Finished(const QString&, const QString&, MusicBrainzClient::ResultList)),
SLOT(AudioCDTagsLoaded(const QString&, const QString&, MusicBrainzClient::ResultList)));
musicbrainz_client->StartDiscIdRequest(musicbrainz_discid);
g_free(string_mb);
}
// Clean all the Gstreamer objects we have used: we don't need them anymore
gst_element_set_state (pipe, GST_STATE_NULL);
// This will also cause cdda_ to be unref'd.
gst_object_unref(GST_OBJECT(pipe));
gst_object_unref(GST_OBJECT(msg));
gst_tag_list_free(tags);
}
SongLoader::Result SongLoader::LoadAudioCD() {
#ifdef HAVE_AUDIOCD
// Create gstreamer cdda element
GstElement* cdda = gst_element_make_from_uri (GST_URI_SRC, "cdda://", NULL);
if (cdda == NULL) {
qLog(Error) << "Error while creating CDDA GstElement";
return Error;
}
// Change the element's state to ready and paused, to be able to query it
if (gst_element_set_state(cdda, GST_STATE_READY) == GST_STATE_CHANGE_FAILURE ||
gst_element_set_state(cdda, GST_STATE_PAUSED) == GST_STATE_CHANGE_FAILURE) {
qLog(Error) << "Error while changing CDDA GstElement's state";
gst_element_set_state(cdda, GST_STATE_NULL);
gst_object_unref(GST_OBJECT(cdda));
return Error;
}
// Get number of tracks
GstFormat fmt = gst_format_get_by_nick ("track");
GstFormat out_fmt = fmt;
gint64 num_tracks = 0;
if (!gst_element_query_duration (cdda, &out_fmt, &num_tracks) || out_fmt != fmt) {
qLog(Error) << "Error while querying cdda GstElement";
gst_object_unref(GST_OBJECT(cdda));
return Error;
}
for (int track_number = 1; track_number <= num_tracks; track_number++) {
// Init song
Song song;
guint64 duration = 0;
// quint64 == ulonglong and guint64 == ulong, therefore we must cast
if (gst_tag_list_get_uint64 (GST_CDDA_BASE_SRC(cdda)->tracks[track_number-1].tags,
GST_TAG_DURATION, &duration)) {
song.set_length_nanosec((quint64)duration);
}
song.set_valid(true);
song.set_filetype(Song::Type_Cdda);
song.set_url(QUrl(QString("cdda://%1").arg(track_number)));
song.set_title(QString("Track %1").arg(track_number));
song.set_track(track_number);
songs_ << song;
}
// Generate MusicBrainz DiscId
gst_tag_register_musicbrainz_tags();
GstElement *pipe = gst_pipeline_new ("pipeline");
gst_bin_add (GST_BIN (pipe), cdda);
gst_element_set_state (pipe, GST_STATE_READY);
gst_element_set_state (pipe, GST_STATE_PAUSED);
GstMessage *msg = gst_bus_timed_pop_filtered (GST_ELEMENT_BUS (pipe),
GST_CLOCK_TIME_NONE,
GST_MESSAGE_TAG);
GstTagList *tags = NULL;
gst_message_parse_tag (msg, &tags);
char *string_mb = NULL;
if (gst_tag_list_get_string (tags, GST_TAG_CDDA_MUSICBRAINZ_DISCID, &string_mb)) {
QString musicbrainz_discid(string_mb);
qLog(Info) << "MusicBrainz discid: " << musicbrainz_discid;
MusicBrainzClient *musicbrainz_client = new MusicBrainzClient(this);
connect(musicbrainz_client,
SIGNAL(Finished(const QString&, const QString&, MusicBrainzClient::ResultList)),
SLOT(AudioCDTagsLoaded(const QString&, const QString&, MusicBrainzClient::ResultList)));
musicbrainz_client->StartDiscIdRequest(musicbrainz_discid);
g_free(string_mb);
}
// Clean all the Gstreamer objects we have used: we don't need them anymore
gst_object_unref(GST_OBJECT(cdda));
gst_element_set_state (pipe, GST_STATE_NULL);
gst_object_unref(GST_OBJECT(pipe));
gst_object_unref(GST_OBJECT(msg));
gst_object_unref(GST_OBJECT(tags));
return Success;
#else // HAVE_AUDIOCD
return Error;
#endif
}
void CddaSongLoader::LoadSongsFromCdda() {
QMutexLocker locker(&mutex_load_);
cdio_ = cdio_open(url_.path().toLocal8Bit().constData(), DRIVER_DEVICE);
if (cdio_ == nullptr) {
return;
}
// Create gstreamer cdda element
GError* error = nullptr;
cdda_ = gst_element_make_from_uri(GST_URI_SRC, "cdda://", nullptr, &error);
if (error) {
qLog(Error) << error->code << QString::fromLocal8Bit(error->message);
}
if (cdda_ == nullptr) {
return;
}
if (!url_.isEmpty()) {
g_object_set(cdda_, "device", g_strdup(url_.path().toLocal8Bit().constData()),
nullptr);
}
if (g_object_class_find_property (G_OBJECT_GET_CLASS (cdda_), "paranoia-mode")) {
g_object_set (cdda_, "paranoia-mode", 0, NULL);
}
// Change the element's state to ready and paused, to be able to query it
if (gst_element_set_state(cdda_, GST_STATE_READY) ==
GST_STATE_CHANGE_FAILURE ||
gst_element_set_state(cdda_, GST_STATE_PAUSED) ==
GST_STATE_CHANGE_FAILURE) {
gst_element_set_state(cdda_, GST_STATE_NULL);
gst_object_unref(GST_OBJECT(cdda_));
return;
}
// Get number of tracks
GstFormat fmt = gst_format_get_by_nick("track");
GstFormat out_fmt = fmt;
gint64 num_tracks = 0;
if (!gst_element_query_duration(cdda_, out_fmt, &num_tracks) ||
out_fmt != fmt) {
qLog(Error) << "Error while querying cdda GstElement";
gst_object_unref(GST_OBJECT(cdda_));
return;
}
SongList songs;
for (int track_number = 1; track_number <= num_tracks; track_number++) {
// Init song
Song song;
song.set_id(track_number);
song.set_valid(true);
song.set_filetype(Song::Type_Cdda);
song.set_url(
GetUrlFromTrack(track_number));
song.set_title(QString("Track %1").arg(track_number));
song.set_track(track_number);
songs << song;
}
emit SongsLoaded(songs);
gst_tag_register_musicbrainz_tags();
GstElement* pipeline = gst_pipeline_new("pipeline");
GstElement* sink = gst_element_factory_make ("fakesink", NULL);
gst_bin_add_many (GST_BIN (pipeline), cdda_, sink, NULL);
gst_element_link (cdda_, sink);
gst_element_set_state(pipeline, GST_STATE_READY);
gst_element_set_state(pipeline, GST_STATE_PAUSED);
// Get TOC and TAG messages
GstMessage* msg = nullptr;
GstMessage* msg_toc = nullptr;
GstMessage* msg_tag = nullptr;
while ((msg = gst_bus_timed_pop_filtered(
GST_ELEMENT_BUS(pipeline), 2 * GST_SECOND,
(GstMessageType)(GST_MESSAGE_TOC | GST_MESSAGE_TAG)))) {
if (GST_MESSAGE_TYPE(msg) == GST_MESSAGE_TOC) {
if (msg_toc) gst_message_unref(msg_toc); // Shouldn't happen, but just in case
msg_toc = msg;
} else if (GST_MESSAGE_TYPE(msg) == GST_MESSAGE_TAG) {
if (msg_tag) gst_message_unref(msg_tag);
msg_tag = msg;
}
}
// Handle TOC message: get tracks duration
if (msg_toc) {
GstToc* toc;
gst_message_parse_toc (msg_toc, &toc, nullptr);
if (toc) {
GList* entries = gst_toc_get_entries(toc);
if (entries && songs.size() <= g_list_length (entries)) {
int i = 0;
for (GList* node = entries; node != nullptr; node = node->next) {
GstTocEntry *entry = static_cast<GstTocEntry*>(node->data);
quint64 duration = 0;
gint64 start, stop;
if (gst_toc_entry_get_start_stop_times (entry, &start, &stop))
duration = stop - start;
songs[i++].set_length_nanosec(duration);
}
}
}
gst_message_unref(msg_toc);
}
emit SongsDurationLoaded(songs);
// Handle TAG message: generate MusicBrainz DiscId
if (msg_tag) {
GstTagList* tags = nullptr;
gst_message_parse_tag(msg_tag, &tags);
char* string_mb = nullptr;
if (gst_tag_list_get_string(tags, GST_TAG_CDDA_MUSICBRAINZ_DISCID,
&string_mb)) {
QString musicbrainz_discid(string_mb);
qLog(Info) << "MusicBrainz discid: " << musicbrainz_discid;
emit MusicBrainzDiscIdLoaded(musicbrainz_discid);
g_free(string_mb);
gst_message_unref(msg_tag);
gst_tag_list_free(tags);
}
}
gst_element_set_state(pipeline, GST_STATE_NULL);
// This will also cause cdda_ to be unref'd.
gst_object_unref(pipeline);
}
