static void
print_toc_entry (gpointer data, gpointer user_data)
{
GstTocEntry *entry = (GstTocEntry *) data;
guint depth = GPOINTER_TO_UINT (user_data);
guint indent = MIN (GPOINTER_TO_UINT (user_data), MAX_INDENT);
GstTagList *tags;
GList *subentries;
gint64 start, stop;
gst_toc_entry_get_start_stop_times (entry, &start, &stop);
g_print ("%*s%s: start: %" GST_TIME_FORMAT " stop: %" GST_TIME_FORMAT "\n",
depth, " ",
gst_toc_entry_type_get_nick (gst_toc_entry_get_entry_type (entry)),
GST_TIME_ARGS (start), GST_TIME_ARGS (stop));
indent += 2;
/* print tags */
tags = gst_toc_entry_get_tags (entry);
if (tags) {
g_print ("%*sTags:\n", 2 * depth, " ");
gst_tag_list_foreach (tags, print_tag_foreach, GUINT_TO_POINTER (indent));
}
/* loop over sub-toc entries */
subentries = gst_toc_entry_get_sub_entries (entry);
g_list_foreach (subentries, print_toc_entry, GUINT_TO_POINTER (indent));
}
static gboolean
gst_wavenc_parse_cue (GstWavEnc * wavenc, guint32 id, GstTocEntry * entry)
{
gint64 start;
GstWavEncCue *cue;
g_return_val_if_fail (entry != NULL, FALSE);
gst_toc_entry_get_start_stop_times (entry, &start, NULL);
cue = g_new (GstWavEncCue, 1);
cue->id = id;
cue->position = gst_util_uint64_scale_round (start, wavenc->rate, GST_SECOND);
memcpy (cue->data_chunk_id, "data", 4);
cue->chunk_start = 0;
cue->block_start = 0;
cue->sample_offset = cue->position;
wavenc->cues = g_list_append (wavenc->cues, cue);
return TRUE;
}
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);
}
