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Fixed FPS stable computation

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brunoherbelin
2021-02-23 23:44:04 +01:00
parent 0ee5eebf91
commit afc0c7af0e
2 changed files with 5 additions and 7 deletions
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8
Mixer.cpp
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@@ -109,8 +109,7 @@ static void saveSession(const std::string& filename, Session *session)
session->unlock(); session->unlock();
} }
Mixer::Mixer() : session_(nullptr), back_session_(nullptr), current_view_(nullptr), Mixer::Mixer() : session_(nullptr), back_session_(nullptr), current_view_(nullptr), dt_(0.f), dt__(0.f)
/*update_time_(GST_CLOCK_TIME_NONE),*/ dt_(0.f), fps_(59.f)
{ {
// unsused initial empty session // unsused initial empty session
session_ = new Session; session_ = new Session;
@@ -203,9 +202,8 @@ void Mixer::update()
dt_ = g_timer_elapsed (timer, NULL) * 1000.0; dt_ = g_timer_elapsed (timer, NULL) * 1000.0;
g_timer_start(timer); g_timer_start(timer);
// compute fps // compute stabilized dt__
if (dt_ > 1.f) dt__ = 0.05f * dt_ + 0.95f * dt__;
fps_ = 1.f / (dt_+1.f) + 0.999f * fps_;
// update session and associated sources // update session and associated sources
session_->update(dt_); session_->update(dt_);

4
Mixer.h
View File

@@ -33,7 +33,7 @@ public:
// update session and all views // update session and all views
void update(); void update();
inline float dt() const { return dt_;} inline float dt() const { return dt_;}
inline float fps() const { return fps_;} inline int fps() const { return int(roundf(1000.f/dt__));}
// draw session and current view // draw session and current view
void draw(); void draw();
@@ -129,7 +129,7 @@ protected:
TransitionView transition_; TransitionView transition_;
float dt_; float dt_;
float fps_; float dt__;
}; };
#endif // MIXER_H #endif // MIXER_H