camera-flags: added depth and video mirror

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

examples/glview.c

@@ -194,6 +194,12 @@ void keyPressed(unsigned char key, int x, int y)
 		freenect_set_flag(f_dev, FREENECT_RAW_COLOR, raw_color);
 		raw_color = !raw_color;
 	}
+	if (key == 'm') {
+		static freenect_flag_value mirror = FREENECT_ON;
+		freenect_set_flag(f_dev, FREENECT_MIRROR_DEPTH, mirror);
+		freenect_set_flag(f_dev, FREENECT_MIRROR_VIDEO, mirror);
+		mirror = !mirror;
+	}
 	if (key == '1') {
 		freenect_set_led(f_dev,LED_GREEN);
 	}
@@ -363,7 +369,8 @@ void *freenect_threadfunc(void *arg)
 	freenect_start_depth(f_dev);
 	freenect_start_video(f_dev);
 
-	printf("'w'-tilt up, 's'-level, 'x'-tilt down, '0'-'6'-select LED mode, 'f'-video format, 'e' - auto exposure, 'b' - white balance, r - raw color\n");
+	printf("'w'-tilt up, 's'-level, 'x'-tilt down, '0'-'6'-select LED mode, 'f'-video format\n");
+	printf("'e' - auto exposure, 'b' - white balance, 'r' - raw color, 'm' - mirror\n");
 
 	while (!die && freenect_process_events(f_ctx) >= 0) {
 		//Throttle the text output

include/libfreenect.h

@@ -108,15 +108,19 @@ typedef enum {
 
 /// Enumeration of flags to toggle features with freenect_set_flag()
 typedef enum {
-	FREENECT_AUTO_EXPOSURE = 1 << 14,
+	// values written to the CMOS register
+	FREENECT_AUTO_EXPOSURE      = 1 << 14,
 	FREENECT_AUTO_WHITE_BALANCE = 1 << 1,
-	FREENECT_RAW_COLOR = 1 << 4,
+	FREENECT_RAW_COLOR          = 1 << 4,
+	// registers to be written with 0 or 1
+	FREENECT_MIRROR_DEPTH       = 0x0017,
+	FREENECT_MIRROR_VIDEO       = 0x0047,
 } freenect_flag;
 
 /// Possible values for setting each `freenect_flag`
 typedef enum {
-	FREENECT_ON = 1,
 	FREENECT_OFF = 0,
+	FREENECT_ON  = 1,
 } freenect_flag_value;
 
 /// Structure to give information about the width, height, bitrate,
@@ -631,7 +635,7 @@ FREENECTAPI int freenect_set_depth_mode(freenect_device* dev, const freenect_fra
  * Enables or disables the specified flag.
  * 
  * @param flag Feature to set
- * @param value `FREENECT_ON` or `FREENECT_OFF`
+ * @param value `FREENECT_OFF` or `FREENECT_ON`
  * 
  * @return 0 on success, < 0 if error
  */

src/flags.c

@@ -35,6 +35,9 @@
 
 int freenect_set_flag(freenect_device *dev, freenect_flag flag, freenect_flag_value value)
 {
+	if (flag == FREENECT_MIRROR_DEPTH || flag == FREENECT_MIRROR_VIDEO)
+		return write_register(dev, flag, value);
+
 	uint16_t reg = read_cmos_register(dev, 0x0106);
 	if (reg < 0)
 		return reg;