Remove the YV16 format for simplicity's sake.

Change-Id: Iee03d100933ba0c67b13d51e0435be3b4cd953cf

1 files changed, 72 insertions, 49 deletions

diff --git a/graphics/java/android/graphics/ImageFormat.java b/graphics/java/android/graphics/ImageFormat.java
index f126374..3f9f961 100644
--- a/graphics/java/android/graphics/ImageFormat.java
+++ b/graphics/java/android/graphics/ImageFormat.java
@@ -16,61 +16,84 @@
 
 package android.graphics;
 
-public class ImageFormat
-{
-    /* these constants are chosen to be binary compatible with
-     * their previous location in PixelFormat.java */
-    
-    public static final int UNKNOWN = 0;
+public class ImageFormat {
+	/*
+	 * these constants are chosen to be binary compatible with their previous
+	 * location in PixelFormat.java
+	 */
 
-    /** RGB format used for pictures encoded as RGB_565   
-     *  see {@link android.hardware.Camera.Parameters#setPictureFormat(int)}.
-     */
-    public static final int RGB_565 = 4;
+	public static final int UNKNOWN = 0;
 
-    /**
-     * YCbCr formats, used for video. These are not necessarily supported
-     * by the hardware.
-     */
-    public static final int NV16 = 0x10;
+	/**
+	 * RGB format used for pictures encoded as RGB_565 see
+	 * {@link android.hardware.Camera.Parameters#setPictureFormat(int)}.
+	 */
+	public static final int RGB_565 = 4;
 
-    
-    /** YCrCb format used for images, which uses the NV21 encoding format.   
-     *  This is the default format for camera preview images, when not
-     *  otherwise set with 
-     *  {@link android.hardware.Camera.Parameters#setPreviewFormat(int)}.
-     */
-    public static final int NV21 = 0x11;
+	/**
+	 * Planar 4:2:0 YCrCb format. This format assumes an horizontal stride of 16
+	 * pixels for all planes and an implicit vertical stride of the image
+	 * height's next multiple of two.
+	 *   y_size = stride * ALIGN(height, 2)
+	 *   c_size = ALIGN(stride/2, 16) * height
+	 *   size = y_size + c_size * 2
+	 *   cr_offset = y_size
+	 *   cb_offset = y_size + c_size
+	 * 
+	 * Whether this format is supported by the camera hardware can be determined
+	 * by
+	 * {@link android.hardware.Camera.Parameters#getSupportedPreviewFormats()}.
+	 */
+	public static final int YV12 = 0x32315659;
 
+	/**
+	 * YCbCr format, used for video. Whether this format is supported by the
+	 * camera hardware can be determined by
+	 * {@link android.hardware.Camera.Parameters#getSupportedPreviewFormats()}.
+	 */
+	public static final int NV16 = 0x10;
 
-    /** YCbCr format used for images, which uses YUYV (YUY2) encoding format.
-     *  This is an alternative format for camera preview images. Whether this
-     *  format is supported by the camera hardware can be determined by
-     *  {@link android.hardware.Camera.Parameters#getSupportedPreviewFormats()}.
-     */
-    public static final int YUY2 = 0x14;
+	/**
+	 * YCrCb format used for images, which uses the NV21 encoding format. This
+	 * is the default format for camera preview images, when not otherwise set
+	 * with {@link android.hardware.Camera.Parameters#setPreviewFormat(int)}.
+	 */
+	public static final int NV21 = 0x11;
 
-    
-    /**
-     * Encoded formats.  These are not necessarily supported by the hardware.
-     */
-    public static final int JPEG = 0x100;
+	/**
+	 * YCbCr format used for images, which uses YUYV (YUY2) encoding format.
+	 * This is an alternative format for camera preview images. Whether this
+	 * format is supported by the camera hardware can be determined by
+	 * {@link android.hardware.Camera.Parameters#getSupportedPreviewFormats()}.
+	 */
+	public static final int YUY2 = 0x14;
 
+	/**
+	 * Encoded formats. These are not necessarily supported by the hardware.
+	 */
+	public static final int JPEG = 0x100;
 
-    /**
-     * Use this function to retrieve the number of bits per pixel of
-     * an ImageFormat.
-     * @param format
-     * @return the number of bits per pixel of the given format or -1 if the
-     * format doesn't exist or is not supported.
-     */
-    public static int getBitsPerPixel(int format) {
-        switch (format) {
-            case RGB_565:   return 16;
-            case NV16:      return 16;
-            case NV21:      return 12;
-            case YUY2:      return 16;
-        }
-        return -1;
-    }
+	/**
+	 * Use this function to retrieve the number of bits per pixel of an
+	 * ImageFormat.
+	 * 
+	 * @param format
+	 * @return the number of bits per pixel of the given format or -1 if the
+	 *         format doesn't exist or is not supported.
+	 */
+	public static int getBitsPerPixel(int format) {
+		switch (format) {
+		case RGB_565:
+			return 16;
+		case NV16:
+			return 16;
+		case YUY2:
+			return 16;
+		case YV12:
+			return 12;
+		case NV21:
+			return 12;
+		}
+		return -1;
+	}
 }