X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=mixer.h;h=bf53c2482e23362e0cba1ff589cbf72d76d78dd0;hb=d7bba4abb3d56893399578f0540b9ded0a28380f;hp=97bae3057e87e60151f4ba87f96d57ab4d66e107;hpb=44a3a0782389aa1db270326a5c29de52a0aa2b17;p=nageru

diff --git a/mixer.h b/mixer.h
index 97bae30..bf53c24 100644
--- a/mixer.h
+++ b/mixer.h
@@ -5,18 +5,39 @@
 
 #include <epoxy/gl.h>
 #undef Success
+#include <stdbool.h>
+#include <stdint.h>
+
 #include <movit/effect_chain.h>
 #include <movit/flat_input.h>
+#include <condition_variable>
+#include <cstddef>
 #include <functional>
-
-#include "bmusb.h"
+#include <memory>
+#include <mutex>
+#include <string>
+#include <thread>
+#include <vector>
+
+#include "bmusb/bmusb.h"
+#include "ebu_r128_proc.h"
 #include "h264encode.h"
+#include "httpd.h"
 #include "pbo_frame_allocator.h"
 #include "ref_counted_frame.h"
 #include "ref_counted_gl_sync.h"
+#include "resampler.h"
 #include "theme.h"
+#include "timebase.h"
 
-#define NUM_CARDS 2
+class H264Encoder;
+class QSurface;
+namespace movit {
+class Effect;
+class EffectChain;
+class FlatInput;
+class ResourcePool;
+}  // namespace movit
 
 namespace movit {
 class YCbCrInput;
@@ -27,18 +48,21 @@ class QSurfaceFormat;
 class Mixer {
 public:
 	// The surface format is used for offscreen destinations for OpenGL contexts we need.
-	Mixer(const QSurfaceFormat &format);
+	Mixer(const QSurfaceFormat &format, unsigned num_cards);
 	~Mixer();
 	void start();
 	void quit();
 
 	void transition_clicked(int transition_num);
+	void channel_clicked(int preview_num);
 
 	enum Output {
 		OUTPUT_LIVE = 0,
 		OUTPUT_PREVIEW,
 		OUTPUT_INPUT0,
 		OUTPUT_INPUT1,
+		OUTPUT_INPUT2,
+		OUTPUT_INPUT3,
 		NUM_OUTPUTS
 	};
 
@@ -74,14 +98,29 @@ public:
 		output_channel[output].set_frame_ready_callback(callback);
 	}
 
+	typedef std::function<void(float, float, float, float, float)> 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());
+	}
+
 private:
-	void bm_frame(int card_index, uint16_t timecode,
+	void bm_frame(unsigned card_index, uint16_t timecode,
 		FrameAllocator::Frame video_frame, size_t video_offset, uint16_t video_format,
 		FrameAllocator::Frame audio_frame, size_t audio_offset, uint16_t audio_format);
 	void place_rectangle(movit::Effect *resample_effect, movit::Effect *padding_effect, float x0, float y0, float x1, float y1);
 	void thread_func();
 	void subsample_chroma(GLuint src_tex, GLuint dst_dst);
 	void release_display_frame(DisplayFrame *frame);
+	double pts() { return double(pts_int) / TIMEBASE; }
+
+	HTTPD httpd;
+	unsigned num_cards;
 
 	QSurface *mixer_surface, *h264_encoder_surface;
 	std::unique_ptr<movit::ResourcePool> resource_pool;
@@ -93,29 +132,36 @@ private:
 	// Effects part of <display_chain>. Owned by <display_chain>.
 	movit::FlatInput *display_input;
 
-	int frame = 0;
+	int64_t pts_int = 0;  // In TIMEBASE units.
 
 	std::mutex bmusb_mutex;
 	struct CaptureCard {
 		BMUSBCapture *usb;
 		std::unique_ptr<PBOFrameAllocator> frame_allocator;
 
-		// Threading stuff
-		bool thread_initialized = false;
+		// Stuff for the OpenGL context (for texture uploading).
 		QSurface *surface;
 		QOpenGLContext *context;
 
-		bool new_data_ready = false;  // Whether new_frame contains anything.
+		bool new_data_ready = false;  // Whether new_frame and new_frame_audio contains anything.
+		bool should_quit = false;
 		RefCountedFrame new_frame;
 		GLsync new_data_ready_fence;  // Whether new_frame is ready for rendering.
+		std::vector<float> new_frame_audio;
 		std::condition_variable new_data_ready_changed;  // Set whenever new_data_ready is changed.
+		unsigned dropped_frames = 0;  // Before new_frame.
+
+		std::mutex audio_mutex;
+		std::unique_ptr<Resampler> resampler;  // Under audio_mutex.
+		int last_timecode = -1;  // Unwrapped.
 	};
-	CaptureCard cards[NUM_CARDS];  // protected by <bmusb_mutex>
+	CaptureCard cards[MAX_CARDS];  // protected by <bmusb_mutex>
 
-	RefCountedFrame bmusb_current_rendering_frame[NUM_CARDS];
+	RefCountedFrame bmusb_current_rendering_frame[MAX_CARDS];
 
 	class OutputChannel {
 	public:
+		~OutputChannel();
 		void output_frame(DisplayFrame frame);
 		bool get_display_frame(DisplayFrame *frame);
 		void set_frame_ready_callback(new_frame_ready_callback_t callback);
@@ -134,6 +180,12 @@ private:
 
 	std::thread mixer_thread;
 	bool should_quit = false;
+
+	audio_level_callback_t audio_level_callback = nullptr;
+	Ebu_r128_proc r128;
+
+	// TODO: Implement oversampled peak detection.
+	float peak = 0.0f;
 };
 
 extern Mixer *global_mixer;