#include <zita-resampler/resampler.h>
#include "alsa_input.h"
+#include "alsa_pool.h"
#include "bmusb/bmusb.h"
#include "correlation_measurer.h"
#include "db.h"
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.
// 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;
}
}
+ // 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;
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;
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.
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;