X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=mixer.h;h=f5aa4fbdd014758faa047f21bc4dfdf701467a81;hb=refs%2Fheads%2Fmultichannel_audio;hp=05471d6d61ae550af47a8ceb03faebfbc29697ca;hpb=08a992d58c34da8d8bbd70226f7e85c9f30d9514;p=nageru

diff --git a/mixer.h b/mixer.h
index 05471d6..f5aa4fb 100644
--- a/mixer.h
+++ b/mixer.h
@@ -3,52 +3,48 @@
 
 // The actual video mixer, running in its own separate background thread.
 
+#include <assert.h>
 #include <epoxy/gl.h>
+
 #undef Success
+
 #include <stdbool.h>
 #include <stdint.h>
-
-#include <movit/effect_chain.h>
-#include <movit/flat_input.h>
-#include <zita-resampler/resampler.h>
 #include <atomic>
+#include <chrono>
 #include <condition_variable>
 #include <cstddef>
 #include <functional>
+#include <map>
 #include <memory>
 #include <mutex>
+#include <queue>
 #include <string>
 #include <thread>
 #include <vector>
 
+#include "audio_mixer.h"
 #include "bmusb/bmusb.h"
-#include "alsa_output.h"
-#include "ebu_r128_proc.h"
-#include "video_encoder.h"
+#include "defs.h"
 #include "httpd.h"
+#include "input_state.h"
+#include "libusb.h"
 #include "pbo_frame_allocator.h"
 #include "ref_counted_frame.h"
 #include "ref_counted_gl_sync.h"
-#include "resampling_queue.h"
 #include "theme.h"
 #include "timebase.h"
-#include "stereocompressor.h"
-#include "filter.h"
-#include "input_state.h"
-#include "correlation_measurer.h"
+#include "video_encoder.h"
 
-class QuickSyncEncoder;
+class ALSAOutput;
 class QSurface;
+
 namespace movit {
 class Effect;
 class EffectChain;
 class FlatInput;
 class ResourcePool;
 }  // namespace movit
-
-namespace movit {
-class YCbCrInput;
-}
 class QSurfaceFormat;
 
 // For any card that's not the master (where we pick out the frames as they
@@ -165,15 +161,6 @@ public:
 		output_channel[output].set_color_updated_callback(callback);
 	}
 
-	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, 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;
-	}
-
 	std::vector<std::string> get_transition_names()
 	{
 		return theme->get_transition_names(pts());
@@ -204,16 +191,6 @@ public:
 		return theme->map_signal(channel);
 	}
 
-	unsigned get_audio_source() const
-	{
-		return audio_source_channel;
-	}
-
-	void set_audio_source(unsigned channel)
-	{
-		audio_source_channel = channel;
-	}
-
 	unsigned get_master_clock() const
 	{
 		return master_clock_channel;
@@ -239,112 +216,15 @@ public:
 		theme->set_wb(channel, r, g, b);
 	}
 
-	void set_locut_cutoff(float cutoff_hz)
-	{
-		locut_cutoff_hz = cutoff_hz;
-	}
-
-	void set_locut_enabled(bool enabled)
-	{
-		locut_enabled = enabled;
-	}
-
-	bool get_locut_enabled() const
-	{
-		return locut_enabled;
-	}
-
-	float get_limiter_threshold_dbfs()
-	{
-		return limiter_threshold_dbfs;
-	}
-
-	float get_compressor_threshold_dbfs()
-	{
-		return compressor_threshold_dbfs;
-	}
-
-	void set_limiter_threshold_dbfs(float threshold_dbfs)
-	{
-		limiter_threshold_dbfs = threshold_dbfs;
-	}
-
-	void set_compressor_threshold_dbfs(float threshold_dbfs)
-	{
-		compressor_threshold_dbfs = threshold_dbfs;
-	}
-
-	void set_limiter_enabled(bool enabled)
-	{
-		limiter_enabled = enabled;
-	}
-
-	bool get_limiter_enabled() const
-	{
-		return limiter_enabled;
-	}
-
-	void set_compressor_enabled(bool enabled)
-	{
-		compressor_enabled = enabled;
-	}
-
-	bool get_compressor_enabled() const
-	{
-		return compressor_enabled;
-	}
-
-	void set_gain_staging_db(float gain_db)
-	{
-		std::unique_lock<std::mutex> lock(compressor_mutex);
-		level_compressor_enabled = false;
-		gain_staging_db = gain_db;
-	}
-
-	float get_gain_staging_db() const
-	{
-		std::unique_lock<std::mutex> lock(compressor_mutex);
-		return gain_staging_db;
-	}
-
-	void set_gain_staging_auto(bool enabled)
-	{
-		std::unique_lock<std::mutex> lock(compressor_mutex);
-		level_compressor_enabled = enabled;
-	}
-
-	bool get_gain_staging_auto() const
-	{
-		std::unique_lock<std::mutex> lock(compressor_mutex);
-		return level_compressor_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;
-	}
-
-	bool get_final_makeup_gain_auto() const
-	{
-		std::unique_lock<std::mutex> lock(compressor_mutex);
-		return final_makeup_gain_auto;
-	}
+	// Note: You can also get this through the global variable global_audio_mixer.
+	AudioMixer *get_audio_mixer() { return &audio_mixer; }
+	const AudioMixer *get_audio_mixer() const { return &audio_mixer; }
 
 	void schedule_cut()
 	{
 		should_cut = true;
 	}
 
-	void reset_meters();
-
 	unsigned get_num_cards() const { return num_cards; }
 
 	std::string get_card_description(unsigned card_index) const {
@@ -415,9 +295,7 @@ private:
 	void handle_hotplugged_cards();
 	void schedule_audio_resampling_tasks(unsigned dropped_frames, int num_samples_per_frame, int length_per_frame);
 	void render_one_frame(int64_t duration);
-	void send_audio_level_callback();
 	void audio_thread_func();
-	void process_audio_one_frame(int64_t frame_pts_int, int num_samples);
 	void subsample_chroma(GLuint src_tex, GLuint dst_dst);
 	void release_display_frame(DisplayFrame *frame);
 	double pts() { return double(pts_int) / TIMEBASE; }
@@ -469,13 +347,11 @@ private:
 		// frame rate is integer, will always stay zero.
 		unsigned fractional_samples = 0;
 
-		std::mutex audio_mutex;
-		std::unique_ptr<ResamplingQueue> resampling_queue;  // Under audio_mutex.
 		int last_timecode = -1;  // Unwrapped.
-		int64_t next_local_pts = 0;  // Beginning of next frame, in TIMEBASE units.
 	};
-	CaptureCard cards[MAX_CARDS];  // protected by <bmusb_mutex>
-	void get_one_frame_from_each_card(unsigned master_card_index, CaptureCard::NewFrame new_frames[MAX_CARDS], bool has_new_frame[MAX_CARDS], int num_samples[MAX_CARDS]);
+	CaptureCard cards[MAX_VIDEO_CARDS];  // protected by <bmusb_mutex>
+	AudioMixer audio_mixer;  // Same as global_audio_mixer (see audio_mixer.h).
+	void get_one_frame_from_each_card(unsigned master_card_index, CaptureCard::NewFrame new_frames[MAX_VIDEO_CARDS], bool has_new_frame[MAX_VIDEO_CARDS], int num_samples[MAX_VIDEO_CARDS]);
 
 	InputState input_state;
 
@@ -517,51 +393,22 @@ private:
 	std::atomic<bool> should_quit{false};
 	std::atomic<bool> should_cut{false};
 
-	audio_level_callback_t audio_level_callback = nullptr;
-	mutable 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};
-
-	StereoFilter locut;  // Default cutoff 120 Hz, 24 dB/oct.
-	std::atomic<float> locut_cutoff_hz;
-	std::atomic<bool> locut_enabled{true};
-
-	// First compressor; takes us up to about -12 dBFS.
-	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;  // 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.
-	std::atomic<bool> limiter_enabled{true};
-	StereoCompressor compressor;
-	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 {
 		int64_t pts_int;
 		int num_samples;
+		bool adjust_rate;
 	};
 	std::mutex audio_mutex;
 	std::condition_variable audio_task_queue_changed;
 	std::queue<AudioTask> audio_task_queue;  // Under audio_mutex.
 
 	// For mode scanning.
-	bool is_mode_scanning[MAX_CARDS]{ false };
-	std::vector<uint32_t> mode_scanlist[MAX_CARDS];
-	unsigned mode_scanlist_index[MAX_CARDS]{ 0 };
-	timespec last_mode_scan_change[MAX_CARDS];
+	bool is_mode_scanning[MAX_VIDEO_CARDS]{ false };
+	std::vector<uint32_t> mode_scanlist[MAX_VIDEO_CARDS];
+	unsigned mode_scanlist_index[MAX_VIDEO_CARDS]{ 0 };
+	std::chrono::steady_clock::time_point last_mode_scan_change[MAX_VIDEO_CARDS];
 };
 
 extern Mixer *global_mixer;