Add some notes on GPU performance.

[nageru] / mixer.h

diff --git a/mixer.h b/mixer.h
index a177854b46cde0229ebfcb669998afea709813b7..a94cf922fce2b0600521caef8ff87b01ff1939cb 100644 (file)
--- a/mixer.h
+++ b/mixer.h
@@ -18,6 +18,7 @@
 #include "resampler.h"
 #include "timebase.h"
 #include "httpd.h"
+#include "ebu_r128_proc.h"
 
 #define NUM_CARDS 2
 
@@ -80,6 +81,12 @@ public:
                output_channel[output].set_frame_ready_callback(callback);
        }
 
+       typedef std::function<void(float, float, float, float, float)> audio_level_callback_t;
+       void set_audio_level_callback(audio_level_callback_t callback)
+       {
+               audio_level_callback = callback;
+       }
+
        std::vector<std::string> get_transition_names()
        {
                return theme->get_transition_names(pts());
@@ -155,6 +162,12 @@ private:
 
        std::thread mixer_thread;
        bool should_quit = false;
+
+       audio_level_callback_t audio_level_callback = nullptr;
+       Ebu_r128_proc r128;
+
+       // TODO: Implement oversampled peak detection.
+       float peak = 0.0f;
 };
 
 extern Mixer *global_mixer;