fps.h

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#pragma once
 
#include <time.h>
#include <stdint.h>
#include <stdbool.h>

typedef struct {
  uint64_t frame_count;        // Frames counted since last report
  uint64_t last_fps_report_ns; // Last time FPS was reported (nanoseconds)
  uint64_t last_frame_time_ns; // Timestamp of last processed frame (nanoseconds)
  int expected_fps;            // Expected FPS (e.g., 60)
  uint64_t report_interval_ns; // Report interval in nanoseconds (default 10s = 10000000000ns)
  const char *tracker_name;    // Name for logging (e.g., "CLIENT", "WEBCAM", "AUDIO", "KEEPALIVE")
} fps_t;

void fps_init(fps_t *tracker, int expected_fps, const char *name);

void fps_init_with_interval(fps_t *tracker, int expected_fps, const char *name, uint64_t report_interval_ns);

void fps_frame_ns(fps_t *tracker, uint64_t current_time_ns, const char *context);