ardour/livetrax
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Avoid calling rt-methods from non-rt context

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Since upcoming state-machine transitions are done in rt-context
via ARDOUR::Session::process_event () they should all in rt-context.

set_session() is called from the UI thread (and the process-lock wasn't
even taken)
This commit is contained in:
Robin Gareus 2019-03-18 06:15:12 +01:00
parent e545e66911
commit 09fd380948
Signed by: rgareus
GPG Key ID: A090BCE02CF57F04
2 changed files with 13 additions and 15 deletions
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1
libs/ardour/ardour/audioengine.h
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@ -307,6 +307,7 @@ class LIBARDOUR_API AudioEngine : public PortManager, public SessionHandlePtr
Glib::Threads::Mutex _devicelist_update_lock;
gint _stop_hw_devicelist_processing;
uint32_t _start_cnt;
uint32_t _init_countdown;
void start_hw_event_processing();
void stop_hw_event_processing();

27
libs/ardour/audioengine.cc
View File

@ -100,6 +100,7 @@ AudioEngine::AudioEngine ()
, _hw_devicelist_update_count(0)
, _stop_hw_devicelist_processing(0)
, _start_cnt (0)
, _init_countdown (0)
#ifdef SILENCE_AFTER_SECONDS
, _silence_countdown (0)
, _silence_hit_cnt (0)
@ -248,6 +249,16 @@ AudioEngine::process_callback (pframes_t nframes)
thread_init_callback (NULL);
}
if (_session && _init_countdown > 0) {
--_init_countdown;
/* Warm up caches */
PortManager::cycle_start (nframes);
PortManager::silence (nframes);
_session->process (nframes);
PortManager::cycle_end (nframes);
return 0;
}
bool return_after_remove_check = false;
if (_measuring_latency == MeasureAudio && _mtdm) {
@ -643,21 +654,7 @@ AudioEngine::set_session (Session *s)
SessionHandlePtr::set_session (s);
if (_session) {
pframes_t blocksize = samples_per_cycle ();
PortManager::cycle_start (blocksize);
_session->process (blocksize);
_session->process (blocksize);
_session->process (blocksize);
_session->process (blocksize);
_session->process (blocksize);
_session->process (blocksize);
_session->process (blocksize);
_session->process (blocksize);
PortManager::cycle_end (blocksize);
_init_countdown = 8;
}
}