X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=audio_mixer.h;h=85f9aedf96a77779b31e3e9a5433710076659208;hb=02f65224836f4e7ccecfb89ccd8dc38ee32f319a;hp=faa0cc52b025b23e6fe541e993e6ee1e085427a0;hpb=61116d03f84a53e96445c2b5d8686f2ea7e7c855;p=nageru

diff --git a/audio_mixer.h b/audio_mixer.h
index faa0cc5..85f9aed 100644
--- a/audio_mixer.h
+++ b/audio_mixer.h
@@ -8,18 +8,19 @@
 //
 // All operations on AudioMixer (except destruction) are thread-safe.
 
-#include <math.h>
+#include <assert.h>
 #include <stdint.h>
+#include <zita-resampler/resampler.h>
 #include <atomic>
+#include <functional>
 #include <map>
 #include <memory>
 #include <mutex>
 #include <set>
+#include <string>
 #include <vector>
-#include <zita-resampler/resampler.h>
 
-#include "alsa_input.h"
-#include "bmusb/bmusb.h"
+#include "alsa_pool.h"
 #include "correlation_measurer.h"
 #include "db.h"
 #include "defs.h"
@@ -29,6 +30,8 @@
 #include "resampling_queue.h"
 #include "stereocompressor.h"
 
+class DeviceSpecProto;
+
 namespace bmusb {
 struct AudioFormat;
 }  // namespace bmusb
@@ -66,6 +69,9 @@ public:
 	float get_fader_volume(unsigned bus_index) const { return fader_volume_db[bus_index]; }
 	void set_fader_volume(unsigned bus_index, float level_db) { fader_volume_db[bus_index] = level_db; }
 
+	bool get_mute(unsigned bus_index) const { return mute[bus_index]; }
+	void set_mute(unsigned bus_index, bool muted) { mute[bus_index] = muted; }
+
 	// Note: This operation holds all ALSA devices (see ALSAPool::get_devices()).
 	// You will need to call set_input_mapping() to get the hold state correctly,
 	// or every card will be held forever.
@@ -89,9 +95,32 @@ 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;
@@ -252,6 +281,23 @@ public:
 		}
 	}
 
+	// A combination of all settings for a bus. Useful if you want to get
+	// or store them as a whole without bothering to call all of the get_*
+	// or set_* functions for that bus.
+	struct BusSettings {
+		float fader_volume_db;
+		bool muted;
+		bool locut_enabled;
+		float eq_level_db[NUM_EQ_BANDS];
+		float gain_staging_db;
+		bool level_compressor_enabled;
+		float compressor_threshold_dbfs;
+		bool compressor_enabled;
+	};
+	static BusSettings get_default_bus_settings();
+	BusSettings get_bus_settings(unsigned bus_index) const;
+	void set_bus_settings(unsigned bus_index, const BusSettings &settings);
+
 private:
 	struct AudioDevice {
 		std::unique_ptr<ResamplingQueue> resampling_queue;
@@ -279,6 +325,7 @@ 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;
 
@@ -297,6 +344,7 @@ 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.
@@ -322,10 +370,13 @@ 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 }};
+	std::atomic<bool> mute[MAX_BUSES] {{ false }};
 	float last_fader_volume_db[MAX_BUSES] { 0.0f };  // Under audio_mutex.
 	std::atomic<float> eq_level_db[MAX_BUSES][NUM_EQ_BANDS] {{{ 0.0f }}};
+	float last_eq_level_db[MAX_BUSES][NUM_EQ_BANDS] {{ 0.0f }};
 
 	audio_level_callback_t audio_level_callback = nullptr;
 	state_changed_callback_t state_changed_callback = nullptr;