Initial commit

lib/rtlf.h

@@ -0,0 +1,53 @@
+#ifndef MCRLCONTROLLER_RTLF_H
+#define MCRLCONTROLLER_RTLF_H
+
+
+#include <cstdio>
+#include <cstring>
+#include <cstdlib>
+
+#define RTLF_MAGIC_NUMBER "RTLF"
+#define RTLF_VERSION 1
+#define RTLF_RECORD_SIZE 80 // 10 x float64 = 80 bytes
+
+#pragma pack(push, 1)
+
+// Fixed part of the Header Block (16 bytes)
+typedef struct {
+    char magic_number[4];   // 0-4: 'RTLF'
+    __uint32_t version;       // 4-8: File format version (Must be 1)
+    __uint32_t car_id;        // 8-12: Unique numerical ID
+    __uint32_t track_name_len;// 12-16: Length of the Track Name string that follows
+} RTLF_Header_Fixed;
+
+// Single Data Record (80 bytes)
+typedef struct {
+    double timestamp;       // 0-8: Time (seconds)
+    double gps_long;        // 8-16: Position X (meters)
+    double gps_lat;         // 16-24: Position Y (meters)
+    double facing_x;        // 24-32: X-component of the car's orientation
+    double facing_y;        // 32-40: Y-component of the car's orientation
+    double facing_z;        // 40-48: Z-component of the car's orientation
+    double acceleration_x;  // 48-56: Acceleration X (m/s^2)
+    double acceleration_y;  // 56-64: Acceleration Y (m/s^2)
+    double acceleration_z;  // 64-72: Acceleration Z (m/s^2)
+    double speed;           // 72-80: Speed (m/s)
+} RTLF_Data_Record;
+
+#pragma pack(pop)
+
+typedef struct {
+    FILE* file;
+    RTLF_Header_Fixed header;
+    char* track_name;
+    long data_start_offset;
+} RTLF_Context;
+
+RTLF_Context* rtlf_open_write(const char* filename, __uint32_t car_id, const char* track_name);
+
+int rtlf_write_record(RTLF_Context* ctx, const RTLF_Data_Record* record);
+
+void rtlf_close(RTLF_Context* ctx);
+
+
+#endif //MCRLCONTROLLER_RTLF_H