ardour/livetrax
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fix threaded state restore (duplicate calls to restore during init)

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and also allow immediate work during use latency-compute runs.

At session load, Ardour calls a plugins "set default" state (GUI thread).
Some plugins may schedule work during state-restore. Ardour immediately
proceeded to restore the actual session plugin state without processing
the already scheduled work and without calling run() for a plugin
to apply state synchronously.
This commit is contained in:
Robin Gareus 2016-08-23 13:40:42 +02:00
parent 81c481f975
commit 4a831725af
2 changed files with 11 additions and 4 deletions
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2
libs/ardour/ardour/lv2_plugin.h
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@ -312,7 +312,7 @@ class LIBARDOUR_API LV2Plugin : public ARDOUR::Plugin, public ARDOUR::Workee
void init (const void* c_plugin, framecnt_t rate);
void allocate_atom_event_buffers ();
void run (pframes_t nsamples);
void run (pframes_t nsamples, bool sync_work = false);
void load_supported_properties(PropertyDescriptors& descs);

13
libs/ardour/lv2_plugin.cc
View File

@ -558,6 +558,13 @@ LV2Plugin::init(const void* c_plugin, framecnt_t rate)
#ifdef HAVE_LILV_0_16_0
// Load default state
if (_worker) {
/* immediately schedule any work,
* so that state restore later will not find a busy
* worker. latency_compute_run() flushes any replies
*/
_worker->set_synchronous(true);
}
LilvState* state = lilv_state_new_from_world(
_world.world, _uri_map.urid_map(), lilv_plugin_get_uri(_impl->plugin));
if (state && _has_state_interface) {
@ -2830,7 +2837,7 @@ LV2Plugin::get_scale_points(uint32_t port_index) const
}
void
LV2Plugin::run(pframes_t nframes)
LV2Plugin::run(pframes_t nframes, bool sync_work)
{
uint32_t const N = parameter_count();
for (uint32_t i = 0; i < N; ++i) {
@ -2841,7 +2848,7 @@ LV2Plugin::run(pframes_t nframes)
if (_worker) {
// Execute work synchronously if we're freewheeling (export)
_worker->set_synchronous(session().engine().freewheeling());
_worker->set_synchronous(sync_work || session().engine().freewheeling());
}
// Run the plugin for this cycle
@ -2902,7 +2909,7 @@ LV2Plugin::latency_compute_run()
port_index++;
}
run(bufsize);
run(bufsize, true);
deactivate();
if (was_activated) {
activate();