Display auto-gain-staging in the UI.

[nageru] / mixer.cpp

diff --git a/mixer.cpp b/mixer.cpp
index 03cf99d3435969891ccc1961d7f71c1b479861a5..7584751b9725c15b4b3a7202d39ea403d343c7a4 100644 (file)
--- a/mixer.cpp
+++ b/mixer.cpp
@@ -384,7 +384,8 @@ void Mixer::thread_func()
                        double loudness_range_high = r128.range_max();
 
                        audio_level_callback(loudness_s, 20.0 * log10(peak),
-                                            loudness_i, loudness_range_low, loudness_range_high);
+                                            loudness_i, loudness_range_low, loudness_range_high,
+                                            last_gain_staging_db);
                }
 
                for (unsigned card_index = 1; card_index < num_cards; ++card_index) {
@@ -564,12 +565,13 @@ void Mixer::process_audio_one_frame()
        float release_time = 10.0f;
        float makeup_gain = pow(10.0f, 28.0f / 20.0f);  // +28 dB takes us to -12 dBFS.
        level_compressor.process(samples_out.data(), samples_out.size() / 2, threshold, ratio, attack_time, release_time, makeup_gain);
+       last_gain_staging_db = 20.0 * log10(level_compressor.get_attenuation() * makeup_gain);
 
 #if 0
        printf("level=%f (%+5.2f dBFS) attenuation=%f (%+5.2f dB) end_result=%+5.2f dB\n",
-               compressor.get_level(), 20.0 * log10(compressor.get_level()),
-               compressor.get_attenuation(), 20.0 * log10(compressor.get_attenuation()),
-               20.0 * log10(compressor.get_level() * compressor.get_attenuation() * makeup_gain));
+               level_compressor.get_level(), 20.0 * log10(level_compressor.get_level()),
+               level_compressor.get_attenuation(), 20.0 * log10(level_compressor.get_attenuation()),
+               20.0 * log10(level_compressor.get_level() * level_compressor.get_attenuation() * makeup_gain));
 #endif
 
        // Find peak and R128 levels.