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add an idle callback at FPS

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This commit is contained in:
Robin Gareus 2014-08-30 20:57:22 +02:00
parent 01864b43e0
commit 16443f44a2
4 changed files with 45 additions and 0 deletions
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31
gtk2_ardour/ardour_ui.cc
View file

@ -151,6 +151,7 @@ UIConfiguration *ARDOUR_UI::ui_config = 0;
sigc::signal<void,bool> ARDOUR_UI::Blink;
sigc::signal<void> ARDOUR_UI::RapidScreenUpdate;
sigc::signal<void> ARDOUR_UI::SuperRapidScreenUpdate;
sigc::signal<void> ARDOUR_UI::FPSUpdate;
sigc::signal<void, framepos_t, bool, framepos_t> ARDOUR_UI::Clock;
sigc::signal<void> ARDOUR_UI::CloseAllDialogs;
@ -992,6 +993,7 @@ If you still wish to quit, please use the\n\n\
second_connection.disconnect ();
point_one_second_connection.disconnect ();
point_zero_something_second_connection.disconnect();
fps_connection.disconnect();
}
delete ARDOUR_UI::instance()->video_timeline;
@ -1139,6 +1141,35 @@ ARDOUR_UI::every_point_zero_something_seconds ()
return TRUE;
}
gint
ARDOUR_UI::every_fps ()
{
FPSUpdate(); /* EMIT_SIGNAL */
return TRUE;
}
void
ARDOUR_UI::set_fps_timeout_connection ()
{
unsigned int interval = 40;
if (!_session) return;
if (_session->timecode_frames_per_second() != 0) {
/* ideally we'll use a select() to sleep and not accumulate
* idle time to provide a regular periodic signal.
* See linux_vst_gui_support.cc 'elapsed_time_ms'.
* However, that'll require a dedicated thread and cross-thread
* signals to the GUI Thread..
*/
interval = floor(500. /* update twice per FPS, since Glib::signal_timeout is very irregular */
* _session->frame_rate() / _session->nominal_frame_rate()
/ _session->timecode_frames_per_second()
);
interval = std::max(8u, interval); // at most 120Hz.
}
fps_connection.disconnect();
fps_connection = Glib::signal_timeout().connect (sigc::mem_fun(*this, &ARDOUR_UI::every_fps), interval);
}
void
ARDOUR_UI::update_sample_rate (framecnt_t)
{

7
gtk2_ardour/ardour_ui.h
View file

@ -190,6 +190,9 @@ class ARDOUR_UI : public Gtkmm2ext::UI, public ARDOUR::SessionHandlePtr
/** point_zero_something_seconds -- currently 25Hz ^= 40ms */
static sigc::signal<void> SuperRapidScreenUpdate;
/** every_fps -- see set_fps_timeout_connection() 25Hz < x < 120Hz */
static sigc::signal<void> FPSUpdate;
/** Emitted frequently with the audible frame, false, and the edit point as
* parameters respectively.
*
@ -548,10 +551,14 @@ class ARDOUR_UI : public Gtkmm2ext::UI, public ARDOUR::SessionHandlePtr
gint every_second ();
gint every_point_one_seconds ();
gint every_point_zero_something_seconds ();
gint every_fps ();
sigc::connection second_connection;
sigc::connection point_one_second_connection;
sigc::connection point_zero_something_second_connection;
sigc::connection fps_connection;
void set_fps_timeout_connection ();
void open_session ();
void open_recent_session ();

2
gtk2_ardour/ardour_ui_dialogs.cc
View file

@ -183,6 +183,7 @@ ARDOUR_UI::set_session (Session *s)
second_connection = Glib::signal_timeout().connect (sigc::mem_fun(*this, &ARDOUR_UI::every_second), 1000);
point_one_second_connection = Glib::signal_timeout().connect (sigc::mem_fun(*this, &ARDOUR_UI::every_point_one_seconds), 100);
point_zero_something_second_connection = Glib::signal_timeout().connect (sigc::mem_fun(*this, &ARDOUR_UI::every_point_zero_something_seconds), 40);
set_fps_timeout_connection();
update_format ();
@ -274,6 +275,7 @@ ARDOUR_UI::unload_session (bool hide_stuff)
second_connection.disconnect ();
point_one_second_connection.disconnect ();
point_zero_something_second_connection.disconnect();
fps_connection.disconnect();
if (editor_meter) {
meter_box.remove(*editor_meter);

5
gtk2_ardour/ardour_ui_options.cc
View file

@ -367,6 +367,7 @@ ARDOUR_UI::parameter_changed (std::string p)
} else if (p == "sync-source") {
synchronize_sync_source_and_video_pullup ();
set_fps_timeout_connection ();
} else if (p == "show-track-meters") {
editor->toggle_meter_updating();
@ -426,7 +427,11 @@ ARDOUR_UI::session_parameter_changed (std::string p)
{
if (p == "native-file-data-format" || p == "native-file-header-format") {
update_format ();
} else if (p == "timecode-format") {
set_fps_timeout_connection ();
} else if (p == "video-pullup" || p == "timecode-format") {
set_fps_timeout_connection ();
synchronize_sync_source_and_video_pullup ();
reset_main_clocks ();
editor->queue_visual_videotimeline_update();