Camera2: Make colorFilterArrangement public

It will be used by DNG

Also fix a typo in spec.

Change-Id: I8427df6b28149c0f8ced27b110efe96dd38357f4

api/current.txt

@@ -11592,6 +11592,7 @@ package android.hardware.camera2 {
     field public static final android.hardware.camera2.CameraMetadata.Key SENSOR_BASE_GAIN_FACTOR;
     field public static final android.hardware.camera2.CameraMetadata.Key SENSOR_BLACK_LEVEL_PATTERN;
     field public static final android.hardware.camera2.CameraMetadata.Key SENSOR_INFO_ACTIVE_ARRAY_SIZE;
+    field public static final android.hardware.camera2.CameraMetadata.Key SENSOR_INFO_COLOR_FILTER_ARRANGEMENT;
     field public static final android.hardware.camera2.CameraMetadata.Key SENSOR_INFO_EXPOSURE_TIME_RANGE;
     field public static final android.hardware.camera2.CameraMetadata.Key SENSOR_INFO_MAX_FRAME_DURATION;
     field public static final android.hardware.camera2.CameraMetadata.Key SENSOR_INFO_PHYSICAL_SIZE;
@@ -11788,6 +11789,11 @@ package android.hardware.camera2 {
     field public static final int REQUEST_AVAILABLE_CAPABILITIES_ZSL = 4; // 0x4
     field public static final int SCALER_AVAILABLE_STREAM_CONFIGURATIONS_INPUT = 1; // 0x1
     field public static final int SCALER_AVAILABLE_STREAM_CONFIGURATIONS_OUTPUT = 0; // 0x0
+    field public static final int SENSOR_INFO_COLOR_FILTER_ARRANGEMENT_BGGR = 3; // 0x3
+    field public static final int SENSOR_INFO_COLOR_FILTER_ARRANGEMENT_GBRG = 2; // 0x2
+    field public static final int SENSOR_INFO_COLOR_FILTER_ARRANGEMENT_GRBG = 1; // 0x1
+    field public static final int SENSOR_INFO_COLOR_FILTER_ARRANGEMENT_RGB = 4; // 0x4
+    field public static final int SENSOR_INFO_COLOR_FILTER_ARRANGEMENT_RGGB = 0; // 0x0
     field public static final int SENSOR_REFERENCE_ILLUMINANT_CLOUDY_WEATHER = 10; // 0xa
     field public static final int SENSOR_REFERENCE_ILLUMINANT_COOL_WHITE_FLUORESCENT = 14; // 0xe
     field public static final int SENSOR_REFERENCE_ILLUMINANT_D50 = 23; // 0x17

core/java/android/hardware/camera2/CameraCharacteristics.java

@@ -949,6 +949,19 @@ public final class CameraCharacteristics extends CameraMetadata {
     public static final Key<int[]> SENSOR_INFO_SENSITIVITY_RANGE =
             new Key<int[]>("android.sensor.info.sensitivityRange", int[].class);
 
+    /**
+     * <p>Arrangement of color filters on sensor;
+     * represents the colors in the top-left 2x2 section of
+     * the sensor, in reading order</p>
+     * @see #SENSOR_INFO_COLOR_FILTER_ARRANGEMENT_RGGB
+     * @see #SENSOR_INFO_COLOR_FILTER_ARRANGEMENT_GRBG
+     * @see #SENSOR_INFO_COLOR_FILTER_ARRANGEMENT_GBRG
+     * @see #SENSOR_INFO_COLOR_FILTER_ARRANGEMENT_BGGR
+     * @see #SENSOR_INFO_COLOR_FILTER_ARRANGEMENT_RGB
+     */
+    public static final Key<Integer> SENSOR_INFO_COLOR_FILTER_ARRANGEMENT =
+            new Key<Integer>("android.sensor.info.colorFilterArrangement", int.class);
+
     /**
      * <p>Range of valid exposure
      * times used by {@link CaptureRequest#SENSOR_EXPOSURE_TIME android.sensor.exposureTime}.</p>

core/java/android/hardware/camera2/CameraMetadata.java

@@ -424,6 +424,38 @@ public abstract class CameraMetadata {
      */
     public static final int SCALER_AVAILABLE_STREAM_CONFIGURATIONS_INPUT = 1;
 
+    //
+    // Enumeration values for CameraCharacteristics#SENSOR_INFO_COLOR_FILTER_ARRANGEMENT
+    //
+
+    /**
+     * @see CameraCharacteristics#SENSOR_INFO_COLOR_FILTER_ARRANGEMENT
+     */
+    public static final int SENSOR_INFO_COLOR_FILTER_ARRANGEMENT_RGGB = 0;
+
+    /**
+     * @see CameraCharacteristics#SENSOR_INFO_COLOR_FILTER_ARRANGEMENT
+     */
+    public static final int SENSOR_INFO_COLOR_FILTER_ARRANGEMENT_GRBG = 1;
+
+    /**
+     * @see CameraCharacteristics#SENSOR_INFO_COLOR_FILTER_ARRANGEMENT
+     */
+    public static final int SENSOR_INFO_COLOR_FILTER_ARRANGEMENT_GBRG = 2;
+
+    /**
+     * @see CameraCharacteristics#SENSOR_INFO_COLOR_FILTER_ARRANGEMENT
+     */
+    public static final int SENSOR_INFO_COLOR_FILTER_ARRANGEMENT_BGGR = 3;
+
+    /**
+     * <p>Sensor is not Bayer; output has 3 16-bit
+     * values for each pixel, instead of just 1 16-bit value
+     * per pixel.</p>
+     * @see CameraCharacteristics#SENSOR_INFO_COLOR_FILTER_ARRANGEMENT
+     */
+    public static final int SENSOR_INFO_COLOR_FILTER_ARRANGEMENT_RGB = 4;
+
     //
     // Enumeration values for CameraCharacteristics#LED_AVAILABLE_LEDS
     //