1 /* 2 * Copyright (C) 2006 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package android.graphics; 18 19 public class PixelFormat 20 { 21 /* these constants need to match those in hardware/hardware.h */ 22 23 public static final int UNKNOWN = 0; 24 25 /** System chooses a format that supports translucency (many alpha bits) */ 26 public static final int TRANSLUCENT = -3; 27 28 /** 29 * System chooses a format that supports transparency 30 * (at least 1 alpha bit) 31 */ 32 public static final int TRANSPARENT = -2; 33 34 /** System chooses an opaque format (no alpha bits required) */ 35 public static final int OPAQUE = -1; 36 37 public static final int RGBA_8888 = 1; 38 public static final int RGBX_8888 = 2; 39 public static final int RGB_888 = 3; 40 public static final int RGB_565 = 4; 41 42 @Deprecated 43 public static final int RGBA_5551 = 6; 44 @Deprecated 45 public static final int RGBA_4444 = 7; 46 @Deprecated 47 public static final int A_8 = 8; 48 @Deprecated 49 public static final int L_8 = 9; 50 @Deprecated 51 public static final int LA_88 = 0xA; 52 @Deprecated 53 public static final int RGB_332 = 0xB; 54 55 56 /** 57 * @deprecated use {@link android.graphics.ImageFormat#NV16 58 * ImageFormat.NV16} instead. 59 */ 60 @Deprecated 61 public static final int YCbCr_422_SP= 0x10; 62 63 /** 64 * @deprecated use {@link android.graphics.ImageFormat#NV21 65 * ImageFormat.NV21} instead. 66 */ 67 @Deprecated 68 public static final int YCbCr_420_SP= 0x11; 69 70 /** 71 * @deprecated use {@link android.graphics.ImageFormat#YUY2 72 * ImageFormat.YUY2} instead. 73 */ 74 @Deprecated 75 public static final int YCbCr_422_I = 0x14; 76 77 /** 78 * @deprecated use {@link android.graphics.ImageFormat#JPEG 79 * ImageFormat.JPEG} instead. 80 */ 81 @Deprecated 82 public static final int JPEG = 0x100; 83 84 public static void getPixelFormatInfo(int format, PixelFormat info) { 85 switch (format) { 86 case RGBA_8888: 87 case RGBX_8888: 88 info.bitsPerPixel = 32; 89 info.bytesPerPixel = 4; 90 break; 91 case RGB_888: 92 info.bitsPerPixel = 24; 93 info.bytesPerPixel = 3; 94 break; 95 case RGB_565: 96 case RGBA_5551: 97 case RGBA_4444: 98 case LA_88: 99 info.bitsPerPixel = 16; 100 info.bytesPerPixel = 2; 101 break; 102 case A_8: 103 case L_8: 104 case RGB_332: 105 info.bitsPerPixel = 8; 106 info.bytesPerPixel = 1; 107 break; 108 case YCbCr_422_SP: 109 case YCbCr_422_I: 110 info.bitsPerPixel = 16; 111 info.bytesPerPixel = 1; 112 break; 113 case YCbCr_420_SP: 114 info.bitsPerPixel = 12; 115 info.bytesPerPixel = 1; 116 break; 117 default: 118 throw new IllegalArgumentException("unknown pixel format " + format); 119 } 120 } 121 122 public static boolean formatHasAlpha(int format) { 123 switch (format) { 124 case PixelFormat.A_8: 125 case PixelFormat.LA_88: 126 case PixelFormat.RGBA_4444: 127 case PixelFormat.RGBA_5551: 128 case PixelFormat.RGBA_8888: 129 case PixelFormat.TRANSLUCENT: 130 case PixelFormat.TRANSPARENT: 131 return true; 132 } 133 return false; 134 } 135 136 public int bytesPerPixel; 137 public int bitsPerPixel; 138 139 /** 140 * Determine whether or not this is a public-visible and non-deprecated {@code format}. 141 * 142 * <p>In particular, {@code @hide} formats will return {@code false}.</p> 143 * 144 * <p>Any other indirect formats (such as {@code TRANSPARENT} or {@code TRANSLUCENT}) 145 * will return {@code false}.</p> 146 * 147 * @param format an integer format 148 * @return a boolean 149 * 150 * @hide 151 */ 152 public static boolean isPublicFormat(int format) { 153 switch (format) { 154 case RGBA_8888: 155 case RGBX_8888: 156 case RGB_888: 157 case RGB_565: 158 return true; 159 } 160 161 return false; 162 } 163 } 164
