Added a function to extract individual dives from the binary data.

uwatec.h

@@ -8,6 +8,8 @@
 #define UWATEC_ERROR_PROTOCOL -4
 #define UWATEC_ERROR_TIMEOUT  -5
 
+typedef void (*dive_callback_t) (const unsigned char *data, unsigned int size, void *userdata);
+
 #include "uwatec_aladin.h"
 #include "uwatec_memomouse.h"
 

uwatec_memomouse.c

@@ -347,3 +347,35 @@ uwatec_memomouse_read (memomouse *device, unsigned char data[], unsigned int siz
 
 	return UWATEC_SUCCESS;
 }
+
+
+int
+uwatec_memomouse_extract_dives (const unsigned char data[], unsigned int size, dive_callback_t callback, void *userdata)
+{
+	unsigned int previous = 0;
+	unsigned int current = 5;
+	while (current + 18 <= size) {
+		// Memomouse sends all the data twice. The first time, it sends 
+		// the data starting from the oldest dive towards the newest dive. 
+		// Next, it send the same data in reverse order (newest to oldest).
+		// We abort the parsing once we detect the first duplicate dive.
+		if (previous && memcmp (data + previous, data + current, 18) == 0)
+			break;
+
+		// Get the length of the profile data.
+		unsigned int len = data[current + 16] + (data[current + 17] << 8);
+
+		// Check for a buffer overflow.
+		if (current + len + 18 > size)
+			return UWATEC_ERROR;
+
+		if (callback)
+			callback (data + current, len + 18, userdata);
+
+		// Move to the next dive.
+		previous = current;
+		current += len + 18;
+	}
+
+	return UWATEC_SUCCESS;
+}

uwatec_memomouse.h

@@ -15,6 +15,8 @@ int uwatec_memomouse_close (memomouse *device);
 
 int uwatec_memomouse_read (memomouse *device, unsigned char data[], unsigned int size);
 
+int uwatec_memomouse_extract_dives (const unsigned char data[], unsigned int size, dive_callback_t callback, void *userdata);
+
 #ifdef __cplusplus
 }
 #endif /* __cplusplus */