X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=audio_mixer.h;h=38b98f7ce0673e025fb6c96df392281189a98fac;hb=7a81f05c63a992acf4a859fd1136700e1d8b98ac;hp=1570d26373eb3592fbf897990954521ba36d1fb4;hpb=1f32e9e2f4d6b87d8b46a7e4a024a4f43af1b7a2;p=nageru

diff --git a/audio_mixer.h b/audio_mixer.h
index 1570d26..38b98f7 100644
--- a/audio_mixer.h
+++ b/audio_mixer.h
@@ -90,9 +90,32 @@ public:
 	// Note: The card should be held (currently this isn't enforced, though).
 	void serialize_device(DeviceSpec device_spec, DeviceSpecProto *device_spec_proto);
 
+	enum class MappingMode {
+		// A single bus, only from a video card (no ALSA devices),
+		// only channel 1 and 2, locked to +0 dB. Note that this is
+		// only an UI abstraction around exactly the same audio code
+		// as MULTICHANNEL; it's just less flexible.
+		SIMPLE,
+
+		// Full, arbitrary mappings.
+		MULTICHANNEL
+	};
+
+	// Automatically sets mapping mode to MappingMode::SIMPLE.
+	void set_simple_input(unsigned card_index);
+
+	// If mapping mode is not representable as a MappingMode::SIMPLE type
+	// mapping, returns numeric_limits<unsigned>::max().
+	unsigned get_simple_input() const;
+
+	// Implicitly sets mapping mode to MappingMode::MULTICHANNEL.
 	void set_input_mapping(const InputMapping &input_mapping);
+
+	MappingMode get_mapping_mode() const;
 	InputMapping get_input_mapping() const;
 
+	unsigned num_buses() const;
+
 	void set_locut_cutoff(float cutoff_hz)
 	{
 		locut_cutoff_hz = cutoff_hz;
@@ -296,6 +319,7 @@ private:
 	void measure_bus_levels(unsigned bus_index, const std::vector<float> &left, const std::vector<float> &right);
 	void send_audio_level_callback();
 	std::vector<DeviceSpec> get_active_devices() const;
+	void set_input_mapping_lock_held(const InputMapping &input_mapping);
 
 	unsigned num_cards;
 
@@ -314,6 +338,7 @@ private:
 	mutable std::mutex compressor_mutex;
 	std::unique_ptr<StereoCompressor> level_compressor[MAX_BUSES];  // Under compressor_mutex. Used to set/override gain_staging_db if <level_compressor_enabled>.
 	float gain_staging_db[MAX_BUSES];  // Under compressor_mutex.
+	float last_gain_staging_db[MAX_BUSES];  // Under compressor_mutex.
 	bool level_compressor_enabled[MAX_BUSES];  // Under compressor_mutex.
 
 	static constexpr float ref_level_dbfs = -14.0f;  // Chosen so that we end up around 0 LU in practice.
@@ -339,6 +364,7 @@ private:
 	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.
 
+	MappingMode current_mapping_mode;  // Under audio_mutex.
 	InputMapping input_mapping;  // Under audio_mutex.
 	std::atomic<float> fader_volume_db[MAX_BUSES] {{ 0.0f }};
 	float last_fader_volume_db[MAX_BUSES] { 0.0f };  // Under audio_mutex.