1 /* 2 * Copyright (C) 2005 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 // 18 19 // Pixel formats used across the system. 20 // These formats might not all be supported by all renderers, for instance 21 // skia or SurfaceFlinger are not required to support all of these formats 22 // (either as source or destination) 23 24 25 #ifndef UI_PIXELFORMAT_H 26 #define UI_PIXELFORMAT_H 27 28 #include <stdint.h> 29 #include <sys/types.h> 30 #include <utils/Errors.h> 31 #include <hardware/hardware.h> 32 33 namespace android { 34 35 enum { 36 // 37 // these constants need to match those 38 // in graphics/PixelFormat.java & pixelflinger/format.h 39 // 40 PIXEL_FORMAT_UNKNOWN = 0, 41 PIXEL_FORMAT_NONE = 0, 42 43 // logical pixel formats used by the SurfaceFlinger ----------------------- 44 PIXEL_FORMAT_CUSTOM = -4, 45 // Custom pixel-format described by a PixelFormatInfo structure 46 47 PIXEL_FORMAT_TRANSLUCENT = -3, 48 // System chooses a format that supports translucency (many alpha bits) 49 50 PIXEL_FORMAT_TRANSPARENT = -2, 51 // System chooses a format that supports transparency 52 // (at least 1 alpha bit) 53 54 PIXEL_FORMAT_OPAQUE = -1, 55 // System chooses an opaque format (no alpha bits required) 56 57 // real pixel formats supported for rendering ----------------------------- 58 59 PIXEL_FORMAT_RGBA_8888 = HAL_PIXEL_FORMAT_RGBA_8888, // 4x8-bit RGBA 60 PIXEL_FORMAT_RGBX_8888 = HAL_PIXEL_FORMAT_RGBX_8888, // 4x8-bit RGB0 61 PIXEL_FORMAT_RGB_888 = HAL_PIXEL_FORMAT_RGB_888, // 3x8-bit RGB 62 PIXEL_FORMAT_RGB_565 = HAL_PIXEL_FORMAT_RGB_565, // 16-bit RGB 63 PIXEL_FORMAT_BGRA_8888 = HAL_PIXEL_FORMAT_BGRA_8888, // 4x8-bit BGRA 64 PIXEL_FORMAT_RGBA_5551 = HAL_PIXEL_FORMAT_RGBA_5551, // 16-bit ARGB 65 PIXEL_FORMAT_RGBA_4444 = HAL_PIXEL_FORMAT_RGBA_4444, // 16-bit ARGB 66 PIXEL_FORMAT_A_8 = 8, // 8-bit A 67 }; 68 69 typedef int32_t PixelFormat; 70 71 struct PixelFormatInfo { 72 enum { 73 INDEX_ALPHA = 0, 74 INDEX_RED = 1, 75 INDEX_GREEN = 2, 76 INDEX_BLUE = 3 77 }; 78 79 enum { // components 80 ALPHA = 1, 81 RGB = 2, 82 RGBA = 3, 83 L = 4, 84 LA = 5, 85 OTHER = 0xFF 86 }; 87 88 struct szinfo { 89 uint8_t h; 90 uint8_t l; 91 }; 92 93 inline PixelFormatInfo() : version(sizeof(PixelFormatInfo)) { } 94 size_t getScanlineSize(unsigned int width) const; 95 size_t getSize(size_t ci) const { 96 return (ci <= 3) ? (cinfo[ci].h - cinfo[ci].l) : 0; 97 } 98 size_t version; 99 PixelFormat format; 100 size_t bytesPerPixel; 101 size_t bitsPerPixel; 102 union { 103 szinfo cinfo[4]; 104 struct { 105 uint8_t h_alpha; 106 uint8_t l_alpha; 107 uint8_t h_red; 108 uint8_t l_red; 109 uint8_t h_green; 110 uint8_t l_green; 111 uint8_t h_blue; 112 uint8_t l_blue; 113 }; 114 }; 115 uint8_t components; 116 uint8_t reserved0[3]; 117 uint32_t reserved1; 118 }; 119 120 // Consider caching the results of these functions are they're not 121 // guaranteed to be fast. 122 ssize_t bytesPerPixel(PixelFormat format); 123 ssize_t bitsPerPixel(PixelFormat format); 124 status_t getPixelFormatInfo(PixelFormat format, PixelFormatInfo* info); 125 126 }; // namespace android 127 128 #endif // UI_PIXELFORMAT_H 129
