X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=video_stream.h;h=736a20fe275ca7acacf9bd6be1e79377877840ac;hb=ce2e0615420b706e1ff2405fffcedfba37a9adac;hp=925cace4c62f5465c7bfb4d21bd0e64aca17a3c3;hpb=8deea0eee4f9b18540463ba253747c232873527b;p=nageru

diff --git a/video_stream.h b/video_stream.h
index 925cace..736a20f 100644
--- a/video_stream.h
+++ b/video_stream.h
@@ -1,29 +1,36 @@
 #ifndef _VIDEO_STREAM_H
 #define _VIDEO_STREAM_H 1
 
-#include <stdint.h>
 #include <epoxy/gl.h>
+#include <stdint.h>
 
 extern "C" {
 #include <libavformat/avio.h>
 }
 
+#include "frame_on_disk.h"
+#include "jpeg_frame_view.h"
+#include "ref_counted_gl_sync.h"
+#include "queue_spot_holder.h"
+
+#include <chrono>
 #include <condition_variable>
 #include <deque>
+#include <functional>
+#include <movit/effect_chain.h>
+#include <movit/mix_effect.h>
+#include <movit/ycbcr_input.h>
 #include <mutex>
 #include <string>
 #include <thread>
 
-#include <movit/effect_chain.h>
-#include <movit/ycbcr_input.h>
-
-#include "ref_counted_gl_sync.h"
-
+class ChromaSubsampler;
 class DISComputeFlow;
 class Interpolate;
 class Mux;
 class QSurface;
 class QSurfaceFormat;
+class YCbCrConverter;
 
 class VideoStream {
 public:
@@ -31,11 +38,31 @@ public:
 	~VideoStream();
 	void start();
 	void stop();
-
-	void schedule_original_frame(int64_t output_pts, unsigned stream_idx, int64_t input_pts);
-	void schedule_interpolated_frame(int64_t output_pts, unsigned stream_idx, int64_t input_first_pts, int64_t input_second_pts, float alpha);
+	void clear_queue();
+
+	// “display_func” is called after the frame has been calculated (if needed)
+	// and has gone out to the stream.
+	void schedule_original_frame(std::chrono::steady_clock::time_point,
+	                             int64_t output_pts, std::function<void()> &&display_func,
+	                             QueueSpotHolder &&queue_spot_holder,
+	                             FrameOnDisk frame);
+	void schedule_faded_frame(std::chrono::steady_clock::time_point, int64_t output_pts,
+	                          std::function<void()> &&display_func,
+	                          QueueSpotHolder &&queue_spot_holder,
+	                          FrameOnDisk frame1, FrameOnDisk frame2,
+	                          float fade_alpha);
+	void schedule_interpolated_frame(std::chrono::steady_clock::time_point, int64_t output_pts,
+	                          std::function<void(std::shared_ptr<Frame>)> &&display_func,
+	                          QueueSpotHolder &&queue_spot_holder,
+	                          FrameOnDisk frame1, FrameOnDisk frame2,
+	                          float alpha, FrameOnDisk secondary_frame = {},  // Empty = no secondary (fade) frame.
+	                          float fade_alpha = 0.0f);
+	void schedule_refresh_frame(std::chrono::steady_clock::time_point, int64_t output_pts,
+	                            std::function<void()> &&display_func,
+	                            QueueSpotHolder &&queue_spot_holder);
 
 private:
+	FrameReader frame_reader;
 
 	void encode_thread_func();
 	std::thread encode_thread;
@@ -46,48 +73,75 @@ private:
 	// Allocated at the very start; if we're empty, we start dropping frames
 	// (so that we don't build up an infinite interpolation backlog).
 	struct InterpolatedFrameResources {
-		GLuint input_tex;  // Layered (contains both input frames).
-		GLuint gray_tex;  // Same.
+		VideoStream *owner;  // Used only for IFRReleaser, below.
+
+		GLuint input_tex;  // Layered (contains both input frames), Y'CbCr.
+		GLuint gray_tex;  // Same, but Y only.
 		GLuint input_fbos[2];  // For rendering to the two layers of input_tex.
+
+		// Destination textures and FBO if there is a fade.
+		GLuint fade_y_output_tex, fade_cbcr_output_tex;
+		GLuint fade_fbo;
+
+		GLuint cb_tex, cr_tex;  // Subsampled, final output.
+
 		GLuint pbo;  // For reading the data back.
 		void *pbo_contents;  // Persistently mapped.
 	};
-	std::deque<InterpolatedFrameResources> interpolate_resources;  // Under <queue_lock>.
-	static constexpr size_t num_interpolate_slots = 10;
+	std::mutex queue_lock;
+	std::deque<std::unique_ptr<InterpolatedFrameResources>> interpolate_resources;  // Under <queue_lock>.
+	static constexpr size_t num_interpolate_slots = 15;  // Should be larger than Player::max_queued_frames, or we risk mass-dropping frames.
+
+	struct IFRReleaser {
+		void operator() (InterpolatedFrameResources *ifr) const
+		{
+			if (ifr != nullptr) {
+				std::unique_lock<std::mutex> lock(ifr->owner->queue_lock);
+				ifr->owner->interpolate_resources.emplace_back(ifr);
+			}
+		}
+	};
+	using BorrowedInterpolatedFrameResources = std::unique_ptr<InterpolatedFrameResources, IFRReleaser>;
 
 	struct QueuedFrame {
+		std::chrono::steady_clock::time_point local_pts;
+
 		int64_t output_pts;
-		enum Type { ORIGINAL, INTERPOLATED } type;
-		unsigned stream_idx;
-		int64_t input_first_pts;  // The only pts for original frames.	
+		enum Type { ORIGINAL, FADED, INTERPOLATED, FADED_INTERPOLATED, REFRESH } type;
+		FrameOnDisk frame1;  // The only frame for original frames.
+
+		// For fades only (including fades against interpolated frames).
+		FrameOnDisk secondary_frame;
 
 		// For interpolated frames only.
-		int64_t input_second_pts;
+		FrameOnDisk frame2;
 		float alpha;
-		InterpolatedFrameResources resources;
+		BorrowedInterpolatedFrameResources resources;
 		RefCountedGLsync fence;  // Set when the interpolated image is read back to the CPU.
-		GLuint flow_tex, output_tex;  // Released in the receiving thread; not really used for anything else.
+		GLuint flow_tex, output_tex, cbcr_tex;  // Released in the receiving thread; not really used for anything else.
+		FrameOnDisk id;
+
+		std::function<void()> display_func;  // Called when the image is done decoding.
+		std::function<void(std::shared_ptr<Frame>)> display_decoded_func;  // Same, except for INTERPOLATED and FADED_INTERPOLATED.
+
+		QueueSpotHolder queue_spot_holder;
 	};
 	std::deque<QueuedFrame> frame_queue;  // Under <queue_lock>.
-	std::mutex queue_lock;
-	std::condition_variable queue_nonempty;
+	std::condition_variable queue_changed;
 
 	std::unique_ptr<Mux> stream_mux;  // To HTTP.
 	std::string stream_mux_header;
 	bool seen_sync_markers = false;
 
-	QSurface *gl_surface;
-
-	// Effectively only converts from 4:2:2 to 4:4:4.
-	// TODO: Have a separate version with ResampleEffect, for scaling?
-	std::unique_ptr<movit::EffectChain> ycbcr_convert_chain;
-
-	movit::YCbCrInput *ycbcr_input;
-	movit::YCbCrFormat ycbcr_format;
+	std::unique_ptr<YCbCrConverter> ycbcr_converter;
+	std::unique_ptr<YCbCrConverter> ycbcr_semiplanar_converter;
 
 	// Frame interpolation.
 	std::unique_ptr<DISComputeFlow> compute_flow;
-	std::unique_ptr<Interpolate> interpolate;
+	std::unique_ptr<Interpolate> interpolate, interpolate_no_split;
+	std::unique_ptr<ChromaSubsampler> chroma_subsampler;
+
+	std::vector<uint8_t> last_frame;
 };
 
 #endif  // !defined(_VIDEO_STREAM_H)