X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=nageru%2Fvideo_encoder.h;fp=nageru%2Fvideo_encoder.h;h=21595a380c992b7df76c0d3531e0cee72b5b2cfe;hb=392f9d1ccb835c05a3874c4bea163788b2c37024;hp=0000000000000000000000000000000000000000;hpb=330ca2f0052b06d91004c6ceb73cd57ab95e7fe1;p=nageru

diff --git a/nageru/video_encoder.h b/nageru/video_encoder.h
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+++ b/nageru/video_encoder.h
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+// A class to orchestrate the concept of video encoding. Will keep track of
+// the muxes to stream and disk, the QuickSyncEncoder, and also the X264Encoder
+// (for the stream) if there is one.
+
+#ifndef _VIDEO_ENCODER_H
+#define _VIDEO_ENCODER_H
+
+#include <epoxy/gl.h>
+#include <movit/image_format.h>
+#include <stdbool.h>
+#include <stdint.h>
+#include <atomic>
+#include <memory>
+#include <mutex>
+#include <string>
+#include <vector>
+
+extern "C" {
+#include <libavformat/avformat.h>
+#include <libavformat/avio.h>
+}
+
+#include "mux.h"
+#include "ref_counted_gl_sync.h"
+
+class AudioEncoder;
+class DiskSpaceEstimator;
+class HTTPD;
+class Mux;
+class QSurface;
+class QuickSyncEncoder;
+class RefCountedFrame;
+class X264Encoder;
+
+namespace movit {
+class ResourcePool;
+}  // namespace movit
+
+class VideoEncoder {
+public:
+	VideoEncoder(movit::ResourcePool *resource_pool, QSurface *surface, const std::string &va_display, int width, int height, HTTPD *httpd, DiskSpaceEstimator *disk_space_estimator);
+	~VideoEncoder();
+
+	void add_audio(int64_t pts, std::vector<float> audio);
+
+	bool is_zerocopy() const;
+
+	// Allocate a frame to render into. The returned two textures
+	// are yours to render into (build them into an FBO).
+	// Call end_frame() when you're done.
+	//
+	// The semantics of y_tex and cbcr_tex depend on is_zerocopy():
+	//
+	//   - If false, the are input parameters, ie., the caller
+	//     allocates textures. (The contents are not read before
+	//     end_frame() is called.)
+	//   - If true, they are output parameters, ie., VideoEncoder
+	//     allocates textures and borrow them to you for rendering.
+	//     In this case, after end_frame(), you are no longer allowed
+	//     to use the textures; they are torn down and given to the
+	//     H.264 encoder.
+	bool begin_frame(int64_t pts, int64_t duration, movit::YCbCrLumaCoefficients ycbcr_coefficients, const std::vector<RefCountedFrame> &input_frames, GLuint *y_tex, GLuint *cbcr_tex);
+
+	// Call after you are done rendering into the frame; at this point,
+	// y_tex and cbcr_tex will be assumed done, and handed over to the
+	// encoder. The returned fence is purely a convenience; you do not
+	// need to use it for anything, but it's useful if you wanted to set
+	// one anyway.
+	RefCountedGLsync end_frame();
+
+	// Does a cut of the disk stream immediately ("frame" is used for the filename only).
+	void do_cut(int frame);
+
+	void change_x264_bitrate(unsigned rate_kbit);
+
+private:
+	void open_output_stream();
+	static int write_packet2_thunk(void *opaque, uint8_t *buf, int buf_size, AVIODataMarkerType type, int64_t time);
+	int write_packet2(uint8_t *buf, int buf_size, AVIODataMarkerType type, int64_t time);
+
+	AVOutputFormat *oformat;
+	mutable std::mutex qs_mu, qs_audio_mu;
+	std::unique_ptr<QuickSyncEncoder> quicksync_encoder;  // Under <qs_mu> _and_ <qs_audio_mu>.
+	movit::ResourcePool *resource_pool;
+	QSurface *surface;
+	std::string va_display;
+	int width, height;
+	HTTPD *httpd;
+	DiskSpaceEstimator *disk_space_estimator;
+
+	bool seen_sync_markers = false;
+
+	std::unique_ptr<Mux> stream_mux;  // To HTTP.
+	std::unique_ptr<AudioEncoder> stream_audio_encoder;
+	std::unique_ptr<X264Encoder> x264_encoder;  // nullptr if not using x264.
+
+	std::string stream_mux_header;
+	MuxMetrics stream_mux_metrics;
+
+	std::atomic<int> quicksync_encoders_in_shutdown{0};
+	std::atomic<int> overriding_bitrate{0};
+
+	// Encoders that are shutdown, but need to call release_gl_resources()
+	// (or be deleted) from some thread with an OpenGL context.
+	std::vector<std::unique_ptr<QuickSyncEncoder>> qs_needing_cleanup;  // Under <qs_mu>.
+};
+
+#endif