Organise project

include/ascii.h

@@ -0,0 +1,15 @@
+#ifndef ASCII_H
+#define ASCII_H
+
+#include <stdint.h>
+
+#define ASCII_CHARS " .:-=+*#%@"
+
+// Convert YUYV raw data to grayscale
+void yuyv_to_gray(const uint8_t *yuyv, uint8_t *gray, int width, int height);
+
+// grayscale to ASCII output grid
+char *grayscale_to_ascii(const uint8_t *gray, int src_w, int src_h,
+                         int dst_w, int dst_h);
+
+#endif

include/capture.h

@@ -0,0 +1,30 @@
+#ifndef CAPTURE_H
+#define CAPTURE_H
+
+#include <stdint.h>
+#include <linux/videodev2.h>
+
+typedef struct {
+    int fd;
+    int width;
+    int height;
+    void *buffer;
+    struct v4l2_buffer buf_info;
+} webcam_t;
+
+// Initialize webcam
+int webcam_init(webcam_t *cam, const char *device, int width, int height);
+
+// Wait for frame to be ready
+int webcam_wait_frame(webcam_t *cam, int timeout_ms);
+
+// Capture frame, dequeue buffer, fill grayscale output buffer
+int webcam_capture_frame(webcam_t *cam, uint8_t *gray_buffer);
+
+// Re‑queue buffer
+int webcam_requeue_buffer(webcam_t *cam);
+
+// Stop streaming and clean up resources
+void webcam_cleanup(webcam_t *cam);
+
+#endif

include/timing.h

@@ -0,0 +1,11 @@
+#ifndef TIMING_H
+#define TIMING_H
+
+#include <time.h>
+
+// Initialize framerate control
+void timing_init(int fps);
+
+void timing_sleep(struct timespec *start_time);
+
+#endif