triggerbox: start of "pending" architecture to allow for thread-safe swapping of slot contents (Triggers)
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@ -483,6 +483,8 @@ class LIBARDOUR_API TriggerBox : public Processor
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bool unbang_trigger (TriggerPtr);
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void add_trigger (TriggerPtr);
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void set_pending (uint32_t slot, TriggerPtr);
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XMLNode& get_state (void);
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int set_state (const XMLNode&, int version);
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@ -511,6 +513,7 @@ class LIBARDOUR_API TriggerBox : public Processor
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void set_pass_thru (bool yn);
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void request_reload (int32_t slot, void*);
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void set_region (uint32_t slot, boost::shared_ptr<Region> region);
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enum TriggerMidiMapMode {
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AbletonPush,
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@ -554,6 +557,7 @@ class LIBARDOUR_API TriggerBox : public Processor
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int32_t _order;
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Glib::Threads::RWLock trigger_lock; /* protects all_triggers */
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Triggers all_triggers;
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Triggers pending;
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PBD::RingBuffer<uint32_t> explicit_queue; /* user queued triggers */
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TriggerPtr _currently_playing;
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Requests _requests;
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@ -274,7 +274,13 @@ Trigger::set_quantization (Temporal::BBT_Offset const & q)
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void
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Trigger::set_region (boost::shared_ptr<Region> r)
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{
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TriggerBox::worker->set_region (_box, index(), r);
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if (!r) {
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/* clear operation, no need to talk to the worker thread */
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_box.set_pending (_index, TriggerPtr());
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} else {
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/* load data, do analysis in another thread */
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TriggerBox::worker->set_region (_box, index(), r);
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}
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}
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void
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@ -1681,6 +1687,8 @@ TriggerBox::TriggerBox (Session& s, DataType dt)
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}
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}
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pending.reserve (all_triggers.size());
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Config->ParameterChanged.connect_same_thread (*this, boost::bind (&TriggerBox::parameter_changed, this, _1));
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StopAllTriggers.connect_same_thread (stop_all_connection, boost::bind (&TriggerBox::request_stop_all, this));
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@ -1693,6 +1701,35 @@ TriggerBox::scene_bang (uint32_t n)
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_pending_scene = n;
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}
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void
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TriggerBox::set_region (uint32_t slot, boost::shared_ptr<Region> region)
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{
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/* This is called from our worker thread */
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TriggerPtr t;
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switch (_data_type) {
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case DataType::AUDIO:
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t = boost::make_shared<AudioTrigger> (slot, *this);
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break;
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case DataType::MIDI:
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t = boost::make_shared<MIDITrigger> (slot, *this);
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break;
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}
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t->set_region_threaded (region);
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/* XXX what happens if pending is already set? */
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set_pending (slot, t);
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}
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void
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TriggerBox::set_pending (uint32_t slot, TriggerPtr t)
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{
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pending[slot] = t;
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}
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void
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TriggerBox::scene_unbang (uint32_t n)
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{
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@ -2700,7 +2737,7 @@ TriggerBoxThread::thread_work ()
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while (requests.read (&req, 1) == 1) {
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switch (req->type) {
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case SetRegion:
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req->box->trigger (req->slot)->set_region_threaded (req->region);
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req->box->set_region (req->slot, req->region);
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break;
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default:
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break;
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