Export maximum and no-value values for the depth modes.

We get questions about the maximum range of the Kinect; hopefully this will
make it slightly clearer.

Signed-off-by: Drew Fisher <drew.m.fisher@gmail.com>

include/libfreenect.h

@@ -35,6 +35,15 @@ extern "C" {
 
 #define FREENECT_COUNTS_PER_G 819 /**< Ticks per G for accelerometer as set per http://www.kionix.com/Product%20Sheets/KXSD9%20Product%20Brief.pdf */
 
+/// Maximum value that a uint16_t pixel will take on in the buffer of any of the FREENECT_DEPTH_MM or FREENECT_DEPTH_REGISTERED frame callbacks
+#define FREENECT_DEPTH_MM_MAX_VALUE 10000
+/// Value indicating that this pixel has no data, when using FREENECT_DEPTH_MM or FREENECT_DEPTH_REGISTERED depth modes
+#define FREENECT_DEPTH_MM_NO_VALUE 0
+/// Maximum value that a uint16_t pixel will take on in the buffer of any of the FREENECT_DEPTH_11BIT, FREENECT_DEPTH_10BIT, FREENECT_DEPTH_11BIT_PACKED, or FREENECT_DEPTH_10BIT_PACKED frame callbacks
+#define FREENECT_DEPTH_RAW_MAX_VALUE 2048
+/// Value indicating that this pixel has no data, when using FREENECT_DEPTH_11BIT, FREENECT_DEPTH_10BIT, FREENECT_DEPTH_11BIT_PACKED, or FREENECT_DEPTH_10BIT_PACKED
+#define FREENECT_DEPTH_RAW_NO_VALUE 2047
+
 /// Flags representing devices to open when freenect_open_device() is called.
 /// In particular, this allows libfreenect to grab only a subset of the devices
 /// in the Kinect, so you could (for instance) use libfreenect to handle audio

src/registration.c

@@ -41,10 +41,10 @@
 #define DEPTH_SENSOR_X_RES 1280
 #define DEPTH_MIRROR_X 0
 
-#define DEPTH_MAX_METRIC_VALUE 10000
-#define DEPTH_MAX_RAW_VALUE 2048
-#define DEPTH_NO_RAW_VALUE 2047
-#define DEPTH_NO_MM_VALUE 0
+#define DEPTH_MAX_METRIC_VALUE FREENECT_DEPTH_MM_MAX_VALUE
+#define DEPTH_NO_MM_VALUE      FREENECT_DEPTH_MM_NO_VALUE
+#define DEPTH_MAX_RAW_VALUE    FREENECT_DEPTH_RAW_MAX_VALUE
+#define DEPTH_NO_RAW_VALUE     FREENECT_DEPTH_RAW_NO_VALUE
 
 #define DEPTH_X_OFFSET 1
 #define DEPTH_Y_OFFSET 1