| /* |
| * Copyright (C) 2010 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| 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; |
| |
| /** RGB format used for pictures encoded as RGB_565 |
| * see {@link android.hardware.Camera.Parameters#setPictureFormat(int)}. |
| */ |
| public static final int RGB_565 = 4; |
| |
| /** |
| * YCbCr formats, used for video. These are not necessarily supported |
| * by the hardware. |
| */ |
| public static final int NV16 = 0x10; |
| |
| |
| /** 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; |
| |
| |
| /** 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; |
| } |
| } |