feat: implement freenect_get_device_serial()

Signed-off-by: Benn Snyder <benn.snyder@gmail.com>

Author: piedar

CMakeLists.txt

@@ -46,8 +46,8 @@ include (FindOS)
 include (SetupDirectories)
 
 set (PROJECT_VER_MAJOR 0)
-set (PROJECT_VER_MINOR 6)
-set (PROJECT_VER_PATCH 4)
+set (PROJECT_VER_MINOR 7)
+set (PROJECT_VER_PATCH 0)
 set (PROJECT_VER
   "${PROJECT_VER_MAJOR}.${PROJECT_VER_MINOR}.${PROJECT_VER_PATCH}")
 set (PROJECT_APIVER

include/libfreenect.h

@@ -355,6 +355,15 @@ FREENECTAPI int freenect_open_device(freenect_context *ctx, freenect_device **de
  */
 FREENECTAPI int freenect_open_device_by_camera_serial(freenect_context *ctx, freenect_device **dev, const char* camera_serial);
 
+/**
+ * Gets a serial number for the device.
+ * The caller must free() the serial after use.
+ *
+ * @param dev
+ * @return an appropriate serial number, or NULL if none was found.
+ */
+FREENECTAPI char* freenect_get_device_serial(freenect_device* dev);
+
 /**
  * Closes a device that is currently open
  *

src/core.c

@@ -202,6 +202,19 @@ FREENECTAPI int freenect_open_device_by_camera_serial(freenect_context *ctx, fre
 	return -1;
 }
 
+FREENECTAPI char* freenect_get_device_serial(freenect_device* dev)
+{
+	if (dev == NULL) return NULL;
+
+	int res;
+
+	struct freenect_device_attributes attr;
+	res = fnusb_get_device_attributes(dev, &attr);
+	if (res != 0) return NULL;
+
+	return strdup(attr.camera_serial);
+}
+
 FREENECTAPI int freenect_close_device(freenect_device *dev)
 {
 	freenect_context *ctx = dev->parent;