void GstEnginePipeline::SourceDrainedCallback(GstURIDecodeBin* bin,
gpointer self) {
GstEnginePipeline* instance = reinterpret_cast<GstEnginePipeline*>(self);
if (instance->has_next_valid_url()) {
instance->TransitionToNext();
}
}
void GstEnginePipeline::SourceDrainedCallback(GstURIDecodeBin* bin,
gpointer self) {
GstEnginePipeline* instance = reinterpret_cast<GstEnginePipeline*>(self);
if (instance->has_next_valid_url() &&
// I'm not sure why, but calling this when previous track is a local song
// and the next track is a Spotify song is buggy: the Spotify song will
// not start or with some offset. So just do nothing here: when the song
// finished, EndOfStreamReached/TrackEnded will be emitted anyway so
// NextItem will be called.
!(instance->url_.scheme() != "spotify" &&
instance->next_url_.scheme() == "spotify")) {
instance->TransitionToNext();
}
}
bool GstEnginePipeline::HandoffCallback(GstPad*, GstBuffer* buf,
gpointer self) {
GstEnginePipeline* instance = reinterpret_cast<GstEnginePipeline*>(self);
QList<BufferConsumer*> consumers;
{
QMutexLocker l(&instance->buffer_consumers_mutex_);
consumers = instance->buffer_consumers_;
}
for (BufferConsumer* consumer : consumers) {
gst_buffer_ref(buf);
consumer->ConsumeBuffer(buf, instance->id());
}
// Calculate the end time of this buffer so we can stop playback if it's
// after the end time of this song.
if (instance->end_offset_nanosec_ > 0) {
quint64 start_time = GST_BUFFER_TIMESTAMP(buf) - instance->segment_start_;
quint64 duration = GST_BUFFER_DURATION(buf);
quint64 end_time = start_time + duration;
if (end_time > instance->end_offset_nanosec_) {
if (instance->has_next_valid_url()) {
if (instance->next_url_ == instance->url_ &&
instance->next_beginning_offset_nanosec_ ==
instance->end_offset_nanosec_) {
// The "next" song is actually the next segment of this file - so
// cheat and keep on playing, but just tell the Engine we've moved on.
instance->end_offset_nanosec_ = instance->next_end_offset_nanosec_;
instance->next_url_ = QUrl();
instance->next_beginning_offset_nanosec_ = 0;
instance->next_end_offset_nanosec_ = 0;
// GstEngine will try to seek to the start of the new section, but
// we're already there so ignore it.
instance->ignore_next_seek_ = true;
emit instance->EndOfStreamReached(instance->id(), true);
} else {
// We have a next song but we can't cheat, so move to it normally.
instance->TransitionToNext();
}
} else {
// There's no next song
emit instance->EndOfStreamReached(instance->id(), false);
}
}
}
if (instance->emit_track_ended_on_time_discontinuity_) {
if (GST_BUFFER_FLAG_IS_SET(buf, GST_BUFFER_FLAG_DISCONT) ||
GST_BUFFER_OFFSET(buf) < instance->last_buffer_offset_) {
qLog(Debug) << "Buffer discontinuity - emitting EOS";
instance->emit_track_ended_on_time_discontinuity_ = false;
emit instance->EndOfStreamReached(instance->id(), true);
}
}
instance->last_buffer_offset_ = GST_BUFFER_OFFSET(buf);
return true;
}
