X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=audio_mixer.h;h=5a36475b6c1d9122ffd1b4b6725b2db275bea6e7;hb=41c91a56e836c4e81fcee2f3728ca09c0cc2a7bd;hp=8e15f543d48ac7921a7da0b6e98a3855436167fc;hpb=35e2c9dbbd5899d6dd3b2f926f95eeba72d038ba;p=nageru

diff --git a/audio_mixer.h b/audio_mixer.h
index 8e15f54..5a36475 100644
--- a/audio_mixer.h
+++ b/audio_mixer.h
@@ -14,8 +14,10 @@
 #include <math.h>
 #include <stdint.h>
 #include <atomic>
+#include <map>
 #include <memory>
 #include <mutex>
+#include <set>
 #include <vector>
 
 #include "bmusb/bmusb.h"
@@ -29,6 +31,19 @@ namespace bmusb {
 struct AudioFormat;
 }  // namespace bmusb
 
+enum class InputSourceType { SILENCE, CAPTURE_CARD };
+
+struct InputMapping {
+	struct Bus {
+		std::string name;
+		InputSourceType input_source_type;
+		unsigned input_source_index;
+		int source_channel[2] { -1, -1 };  // Left and right. -1 = none.
+	};
+
+	std::vector<Bus> buses;
+};
+
 class AudioMixer {
 public:
 	AudioMixer(unsigned num_cards);
@@ -42,7 +57,12 @@ public:
 	// See comments inside get_output().
 	void set_current_loudness(double level_lufs) { loudness_lufs = level_lufs; }
 
-	void set_fader_volume(unsigned card_index, float level_db) { cards[card_index].fader_volume_db = level_db; }
+	void set_fader_volume(unsigned bus_index, float level_db) { fader_volume_db[bus_index] = level_db; }
+	std::vector<std::string> get_names() const;
+	void set_name(unsigned card_index, const std::string &name);
+
+	void set_input_mapping(const InputMapping &input_mapping);
+	InputMapping get_input_mapping() const;
 
 	void set_locut_cutoff(float cutoff_hz)
 	{
@@ -150,15 +170,21 @@ public:
 	}
 
 private:
+	void find_sample_src_from_capture_card(const std::vector<float> *samples_card, unsigned card_index, int source_channel, const float **srcptr, unsigned *stride);
+	void reset_card_mutex_held(unsigned card_index);
+
 	unsigned num_cards;
 
+	mutable std::mutex audio_mutex;
+
 	struct CaptureCard {
-		std::mutex audio_mutex;
-		std::unique_ptr<ResamplingQueue> resampling_queue;  // Under audio_mutex.
-		int64_t next_local_pts = 0;  // Beginning of next frame, in TIMEBASE units. Under audio_mutex.
-		std::atomic<float> fader_volume_db{0.0f};
+		std::unique_ptr<ResamplingQueue> resampling_queue;
+		int64_t next_local_pts = 0;
+		std::string name;
+		// Which channels we consider interesting (ie., are part of some input_mapping).
+		std::set<unsigned> interesting_channels;
 	};
-	CaptureCard cards[MAX_CARDS];
+	CaptureCard cards[MAX_CARDS];  // Under audio_mutex.
 
 	StereoFilter locut;  // Default cutoff 120 Hz, 24 dB/oct.
 	std::atomic<float> locut_cutoff_hz;
@@ -184,6 +210,9 @@ 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.
+
+	InputMapping input_mapping;  // Under audio_mutex.
+	std::atomic<float> fader_volume_db[MAX_BUSES] {{ 0.0f }};
 };
 
 #endif  // !defined(_AUDIO_MIXER_H)