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/* This file is part of Clementine.
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Copyright 2010, David Sansome <me@davidsansome.com>
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Clementine is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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Clementine is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with Clementine. If not, see <http://www.gnu.org/licenses/>.
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#include <QMutexLocker>
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#include "core/logging.h"
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#include "core/timeconstants.h"
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#include "library/librarybackend.h"
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#include "library/librarymodel.h"
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#include "cddadevice.h"
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CddaDevice::CddaDevice(const QUrl& url, DeviceLister* lister,
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const QString& unique_id, DeviceManager* manager,
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int database_id, bool first_time)
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: ConnectedDevice(url, lister, unique_id, manager, database_id, first_time),
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CddaDevice::~CddaDevice(){
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void CddaDevice::Init() {
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QMutexLocker locker(&mutex_init_);
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song_count_ = 0; // Reset song count, in case it was already set
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cdio_ = cdio_open (url_.path().toLocal8Bit().constData(), DRIVER_DEVICE);
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// Create gstreamer cdda element
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cdda_ = gst_element_make_from_uri (GST_URI_SRC, "cdda://", NULL);
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GST_CDDA_BASE_SRC(cdda_)->device = g_strdup (url_.path().toLocal8Bit().constData());
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// Change the element's state to ready and paused, to be able to query it
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if (gst_element_set_state(cdda_, GST_STATE_READY) == GST_STATE_CHANGE_FAILURE ||
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gst_element_set_state(cdda_, GST_STATE_PAUSED) == GST_STATE_CHANGE_FAILURE) {
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gst_element_set_state(cdda_, GST_STATE_NULL);
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gst_object_unref(GST_OBJECT(cdda_));
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// Get number of tracks
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GstFormat fmt = gst_format_get_by_nick ("track");
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GstFormat out_fmt = fmt;
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gint64 num_tracks = 0;
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if (!gst_element_query_duration (cdda_, &out_fmt, &num_tracks) || out_fmt != fmt) {
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qLog(Error) << "Error while querying cdda GstElement";
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gst_object_unref(GST_OBJECT(cdda_));
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for (int track_number = 1; track_number <= num_tracks; track_number++) {
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// quint64 == ulonglong and guint64 == ulong, therefore we must cast
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if (gst_tag_list_get_uint64 (GST_CDDA_BASE_SRC(cdda_)->tracks[track_number-1].tags,
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GST_TAG_DURATION, &duration)) {
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song.set_length_nanosec((quint64)duration);
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song.set_id(track_number);
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song.set_filetype(Song::Type_Cdda);
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song.set_url(QUrl(QString("cdda://%1/%2").arg(url_.path()).arg(track_number)));
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song.set_title(QString("Track %1").arg(track_number));
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song.set_track(track_number);
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song_count_ = num_tracks;
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connect(this, SIGNAL(SongsDiscovered(const SongList&)), model_, SLOT(SongsDiscovered(const SongList&)));
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emit SongsDiscovered(songs);
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// Generate MusicBrainz DiscId
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gst_tag_register_musicbrainz_tags();
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GstElement *pipe = gst_pipeline_new ("pipeline");
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gst_bin_add (GST_BIN (pipe), cdda_);
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gst_element_set_state (pipe, GST_STATE_READY);
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gst_element_set_state (pipe, GST_STATE_PAUSED);
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GstMessage *msg = gst_bus_timed_pop_filtered (GST_ELEMENT_BUS (pipe),
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GstTagList *tags = NULL;
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gst_message_parse_tag (msg, &tags);
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char *string_mb = NULL;
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if (gst_tag_list_get_string (tags, GST_TAG_CDDA_MUSICBRAINZ_DISCID, &string_mb)) {
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QString musicbrainz_discid(string_mb);
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qLog(Info) << "MusicBrainz discid: " << musicbrainz_discid;
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MusicBrainzClient *musicbrainz_client = new MusicBrainzClient(this);
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connect(musicbrainz_client,
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SIGNAL(Finished(const QString&, const QString&, MusicBrainzClient::ResultList)),
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SLOT(AudioCDTagsLoaded(const QString&, const QString&, MusicBrainzClient::ResultList)));
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musicbrainz_client->StartDiscIdRequest(musicbrainz_discid);
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// Clean all the Gstreamer objects we have used: we don't need them anymore
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gst_element_set_state (pipe, GST_STATE_NULL);
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// This will also cause cdda_ to be unref'd.
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gst_object_unref(GST_OBJECT(pipe));
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gst_object_unref(GST_OBJECT(msg));
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gst_tag_list_free(tags);
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void CddaDevice::AudioCDTagsLoaded(const QString& artist, const QString& album,
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const MusicBrainzClient::ResultList& results) {
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MusicBrainzClient *musicbrainz_client = qobject_cast<MusicBrainzClient*>(sender());
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musicbrainz_client->deleteLater();
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int track_number = 1;
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if (results.size() == 0)
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foreach (const MusicBrainzClient::Result& ret, results) {
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song.set_artist(artist);
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song.set_album(album);
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song.set_title(ret.title_);
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song.set_length_nanosec(ret.duration_msec_ * kNsecPerMsec);
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song.set_track(track_number);
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song.set_year(ret.year_);
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song.set_id(track_number);
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// We need to set url: that's how playlist will find the correct item to update
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song.set_url(QUrl(QString("cdda://%1/%2").arg(unique_id()).arg(track_number++)));
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connect(this, SIGNAL(SongsDiscovered(const SongList&)), model_, SLOT(SongsDiscovered(const SongList&)));
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emit SongsDiscovered(songs);
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void CddaDevice::Refresh() {
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if ((cdio_ && cdda_) && /* already init... */
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cdio_get_media_changed(cdio_) != 1 /* ...and hasn't change since last time */) {
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// Check if mutex is already token (i.e. init is already taking place)
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if (!mutex_init_.tryLock()) {
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mutex_init_.unlock();
added
removed
src/devices/cddadevice.cpp
