Clementine-audio-player-Mac.../src/devices/cddadevice.cpp

171 lines
6.1 KiB
C++

/* This file is part of Clementine.
Copyright 2010, David Sansome <me@davidsansome.com>
Clementine is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
Clementine is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with Clementine. If not, see <http://www.gnu.org/licenses/>.
*/
#include <QMutexLocker>
#include "core/logging.h"
#include "core/timeconstants.h"
#include "library/librarybackend.h"
#include "library/librarymodel.h"
#include "cddadevice.h"
CddaDevice::CddaDevice(const QUrl& url, DeviceLister* lister,
const QString& unique_id, DeviceManager* manager,
Application* app,
int database_id, bool first_time)
: ConnectedDevice(url, lister, unique_id, manager, app, database_id, first_time),
cdda_(NULL),
cdio_(NULL)
{
}
CddaDevice::~CddaDevice(){
if (cdio_)
cdio_destroy(cdio_);
}
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);
}
void CddaDevice::AudioCDTagsLoaded(const QString& artist, const QString& album,
const MusicBrainzClient::ResultList& results) {
MusicBrainzClient *musicbrainz_client = qobject_cast<MusicBrainzClient*>(sender());
musicbrainz_client->deleteLater();
SongList songs;
int track_number = 1;
if (results.size() == 0)
return;
model_->Reset();
foreach (const MusicBrainzClient::Result& ret, results) {
Song song;
song.set_artist(artist);
song.set_album(album);
song.set_title(ret.title_);
song.set_length_nanosec(ret.duration_msec_ * kNsecPerMsec);
song.set_track(track_number);
song.set_year(ret.year_);
song.set_id(track_number);
// We need to set url: that's how playlist will find the correct item to update
song.set_url(QUrl(QString("cdda://%1/%2").arg(unique_id()).arg(track_number++)));
songs << song;
}
connect(this, SIGNAL(SongsDiscovered(const SongList&)), model_, SLOT(SongsDiscovered(const SongList&)));
emit SongsDiscovered(songs);
song_count_ = songs.size();
}
void CddaDevice::Refresh() {
if ((cdio_ && cdda_) && /* already init... */
cdio_get_media_changed(cdio_) != 1 /* ...and hasn't change since last time */) {
return;
}
// Check if mutex is already token (i.e. init is already taking place)
if (!mutex_init_.tryLock()) {
return;
}
mutex_init_.unlock();
Init();
}