fix：更新gps数据处理

include/gps_buffer.h

@@ -1,11 +1,16 @@
-#ifndef GPS_BUFFER_H
-#define GPS_BUFFER_H
-
-#include <stdint.h>
-
-uint64_t get_latest_gps_for_video(void);
-
-
-int gps_buffer_init(const char* host);
-void gps_buffer_cleanup(void);
-#endif
+#ifndef GPS_BUFFER_H
+#define GPS_BUFFER_H
+
+#include <stdint.h>
+
+typedef struct gps_video_sample {
+    double latitude;
+    double longitude;
+} gps_video_sample_t;
+
+gps_video_sample_t get_latest_gps_for_video(void);
+
+
+int gps_buffer_init(const char* host);
+void gps_buffer_cleanup(void);
+#endif

include/video_pipeline.h

@@ -14,9 +14,14 @@ extern "C" {
 
 typedef struct video_pipeline_packet_metadata {
     uint64_t timestamp_ms;
-    uint64_t gps_data;
+    float latitude;
+    float longitude;
 } video_pipeline_packet_metadata_t;
 
+#if defined(__STDC_VERSION__) && __STDC_VERSION__ >= 201112L
+_Static_assert(sizeof(video_pipeline_packet_metadata_t) == 24, "video trailer metadata must be 24 bytes");
+#endif
+
 typedef struct video_pipeline_config {
     const char *camera_device;
     const char *server_addr;