X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=mixer.h;h=961c2a6c20948d72db4ca150aa7ec8c570d8e44d;hb=64ecf5ca155de13a76edaaefc6c4fd1f8e8f92f7;hp=f50eb58db5560f620b2fcdb1cc9097f4b6c5d1cb;hpb=65d716be70e6295628dfa5bb0a72f3429b9696ba;p=nageru

diff --git a/mixer.h b/mixer.h
index f50eb58..961c2a6 100644
--- a/mixer.h
+++ b/mixer.h
@@ -35,6 +35,7 @@
 #include "stereocompressor.h"
 #include "filter.h"
 #include "input_state.h"
+#include "correlation_measurer.h"
 
 class H264Encoder;
 class QSurface;
@@ -103,7 +104,8 @@ public:
 
 	typedef std::function<void(float level_lufs, float peak_db,
 	                           float global_level_lufs, float range_low_lufs, float range_high_lufs,
-	                           float gain_staging_db)> audio_level_callback_t;
+	                           float gain_staging_db, float final_makeup_gain_db,
+	                           float correlation)> audio_level_callback_t;
 	void set_audio_level_callback(audio_level_callback_t callback)
 	{
 		audio_level_callback = callback;
@@ -171,17 +173,30 @@ public:
 
 	void set_gain_staging_db(float gain_db)
 	{
-		std::unique_lock<std::mutex> lock(level_compressor_mutex);
+		std::unique_lock<std::mutex> lock(compressor_mutex);
 		level_compressor_enabled = false;
 		gain_staging_db = gain_db;
 	}
 
 	void set_gain_staging_auto(bool enabled)
 	{
-		std::unique_lock<std::mutex> lock(level_compressor_mutex);
+		std::unique_lock<std::mutex> lock(compressor_mutex);
 		level_compressor_enabled = enabled;
 	}
 
+	void set_final_makeup_gain_db(float gain_db)
+	{
+		std::unique_lock<std::mutex> lock(compressor_mutex);
+		final_makeup_gain_auto = false;
+		final_makeup_gain = pow(10.0f, gain_db / 20.0f);
+	}
+
+	void set_final_makeup_gain_auto(bool enabled)
+	{
+		std::unique_lock<std::mutex> lock(compressor_mutex);
+		final_makeup_gain_auto = enabled;
+	}
+
 	void schedule_cut()
 	{
 		should_cut = true;
@@ -275,6 +290,7 @@ private:
 	audio_level_callback_t audio_level_callback = nullptr;
 	std::mutex compressor_mutex;
 	Ebu_r128_proc r128;  // Under compressor_mutex.
+	CorrelationMeasurer correlation;  // Under compressor_mutex.
 
 	Resampler peak_resampler;
 	std::atomic<float> peak{0.0f};
@@ -283,12 +299,12 @@ private:
 	std::atomic<float> locut_cutoff_hz;
 
 	// First compressor; takes us up to about -12 dBFS.
-	std::mutex level_compressor_mutex;
 	StereoCompressor level_compressor;  // Under compressor_mutex. Used to set/override gain_staging_db if <level_compressor_enabled>.
 	float gain_staging_db = 0.0f;  // Under compressor_mutex.
 	bool level_compressor_enabled = true;  // Under compressor_mutex.
 
-	static constexpr float ref_level_dbfs = -14.0f;
+	static constexpr float ref_level_dbfs = -14.0f;  // Chosen so that we end up around 0 LU in practice.
+	static constexpr float ref_level_lufs = -23.0f;  // 0 LU, more or less by definition.
 
 	StereoCompressor limiter;
 	std::atomic<float> limiter_threshold_dbfs{ref_level_dbfs + 4.0f};   // 4 dB.
@@ -297,6 +313,9 @@ private:
 	std::atomic<float> compressor_threshold_dbfs{ref_level_dbfs - 12.0f};  // -12 dB.
 	std::atomic<bool> compressor_enabled{true};
 
+	double final_makeup_gain = 1.0;  // Under compressor_mutex. Read/write by the user. Note: Not in dB, we want the numeric precision so that we can change it slowly.
+	bool final_makeup_gain_auto = true;  // Under compressor_mutex.
+
 	std::unique_ptr<ALSAOutput> alsa;
 
 	struct AudioTask {