1 //------------------------------------------------------------------------------ 2 // Copyright (c) 2001-2004, Haiku 3 // 4 // Permission is hereby granted, free of charge, to any person obtaining a 5 // copy of this software and associated documentation files (the "Software"), 6 // to deal in the Software without restriction, including without limitation 7 // the rights to use, copy, modify, merge, publish, distribute, sublicense, 8 // and/or sell copies of the Software, and to permit persons to whom the 9 // Software is furnished to do so, subject to the following conditions: 10 // 11 // The above copyright notice and this permission notice shall be included in 12 // all copies or substantial portions of the Software. 13 // 14 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 15 // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 16 // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 17 // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 18 // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 19 // FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER 20 // DEALINGS IN THE SOFTWARE. 21 // 22 // File Name: GraphicsDefs.cpp 23 // Author: DarkWyrm <bpmagic@columbus.rr.com> 24 // Caz <turok2@currantbun.com> 25 // Axel Dörfler <axeld@pinc-software.de> 26 // Description: Graphics functions and variables for the Interface Kit 27 // 28 //------------------------------------------------------------------------------ 29 30 #include <GraphicsDefs.h> 31 32 // patterns 33 const pattern B_SOLID_HIGH = {{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff}}; 34 const pattern B_MIXED_COLORS = {{0xaa, 0x55, 0xaa, 0x55, 0xaa, 0x55, 0xaa, 0x55}}; 35 const pattern B_SOLID_LOW = {{0, 0, 0, 0, 0, 0, 0, 0}}; 36 37 // colors 38 const rgb_color B_TRANSPARENT_COLOR = {0x77, 0x74, 0x77, 0x00}; 39 const rgb_color B_TRANSPARENT_32_BIT = {0x77, 0x74, 0x77, 0x00}; 40 const uint8 B_TRANSPARENT_8_BIT = 0xff; 41 42 const uint8 B_TRANSPARENT_MAGIC_CMAP8 = 0xff; 43 const uint16 B_TRANSPARENT_MAGIC_RGBA15 = 0x39ce; 44 const uint16 B_TRANSPARENT_MAGIC_RGBA15_BIG = 0xce39; 45 const uint32 B_TRANSPARENT_MAGIC_RGBA32 = 0x00777477; 46 const uint32 B_TRANSPARENT_MAGIC_RGBA32_BIG = 0x77747700; 47 48 // misc. 49 const struct screen_id B_MAIN_SCREEN_ID = {0}; 50 51 52 status_t 53 get_pixel_size_for(color_space space, size_t *pixelChunk, size_t *rowAlignment, size_t *pixelsPerChunk) 54 { 55 status_t status = B_OK; 56 int32 bytesPerPixel = 0; 57 int32 pixPerChunk = 0; 58 switch (space) { 59 // supported 60 case B_RGB32: case B_RGBA32: 61 case B_RGB32_BIG: case B_RGBA32_BIG: 62 case B_UVL32: case B_UVLA32: 63 case B_LAB32: case B_LABA32: 64 case B_HSI32: case B_HSIA32: 65 case B_HSV32: case B_HSVA32: 66 case B_HLS32: case B_HLSA32: 67 case B_CMY32: case B_CMYA32: case B_CMYK32: 68 bytesPerPixel = 4; 69 pixPerChunk = 1; 70 break; 71 case B_RGB24: case B_RGB24_BIG: 72 case B_UVL24: case B_LAB24: case B_HSI24: 73 case B_HSV24: case B_HLS24: case B_CMY24: 74 bytesPerPixel = 3; 75 pixPerChunk = 1; 76 break; 77 case B_RGB16: case B_RGB15: case B_RGBA15: 78 case B_RGB16_BIG: case B_RGB15_BIG: case B_RGBA15_BIG: 79 bytesPerPixel = 2; 80 pixPerChunk = 1; 81 break; 82 case B_CMAP8: case B_GRAY8: 83 bytesPerPixel = 1; 84 pixPerChunk = 1; 85 break; 86 case B_GRAY1: 87 bytesPerPixel = 1; 88 pixPerChunk = 8; 89 break; 90 case B_YCbCr422: case B_YUV422: 91 bytesPerPixel = 4; 92 pixPerChunk = 2; 93 break; 94 case B_YCbCr411: case B_YUV411: 95 bytesPerPixel = 12; 96 pixPerChunk = 8; 97 break; 98 case B_YCbCr444: case B_YUV444: 99 bytesPerPixel = 3; 100 pixPerChunk = 1; 101 break; 102 // TODO: I don't know if it's correct, 103 // but beos reports B_YUV420 to be 104 // 6 bytes per pixel and 4 pixel per chunk 105 case B_YCbCr420: case B_YUV420: 106 bytesPerPixel = 3; 107 pixPerChunk = 2; 108 break; 109 case B_YUV9: 110 bytesPerPixel = 5; 111 pixPerChunk = 4; 112 break; 113 case B_YUV12: 114 bytesPerPixel = 6; 115 pixPerChunk = 4; 116 break; 117 // unsupported 118 case B_NO_COLOR_SPACE: 119 default: 120 status = B_BAD_VALUE; 121 break; 122 } 123 124 if (pixelChunk != NULL) 125 *pixelChunk = bytesPerPixel; 126 127 size_t alignment = 0; 128 if (bytesPerPixel != 0) { 129 alignment = (sizeof(int) % bytesPerPixel) * sizeof(int); 130 if (alignment < sizeof(int)) 131 alignment = sizeof(int); 132 } 133 134 if (rowAlignment!= NULL) 135 *rowAlignment = alignment; 136 137 if (pixelsPerChunk!= NULL) 138 *pixelsPerChunk = pixPerChunk; 139 140 return status; 141 } 142 143 144 bool 145 bitmaps_support_space(color_space space, uint32 *supportFlags) 146 { 147 // TODO: fill supportFlags with the supported flags: 148 // - B_VIEWS_SUPPORT_DRAW_BITMAP 149 // - B_BITMAPS_SUPPORT_ATTACHED_VIEWS 150 bool result = false; 151 switch (space) { 152 // supported 153 case B_RGB32: case B_RGBA32: case B_RGB24: 154 case B_RGB32_BIG: case B_RGBA32_BIG: case B_RGB24_BIG: 155 case B_RGB16: case B_RGB15: case B_RGBA15: 156 case B_RGB16_BIG: case B_RGB15_BIG: case B_RGBA15_BIG: 157 case B_CMAP8: case B_GRAY8: case B_GRAY1: 158 case B_YCbCr422: case B_YCbCr411: case B_YCbCr444: case B_YCbCr420: 159 case B_YUV422: case B_YUV411: case B_YUV444: case B_YUV420: 160 case B_UVL24: case B_UVL32: case B_UVLA32: 161 case B_LAB24: case B_LAB32: case B_LABA32: 162 case B_HSI24: case B_HSI32: case B_HSIA32: 163 case B_HSV24: case B_HSV32: case B_HSVA32: 164 case B_HLS24: case B_HLS32: case B_HLSA32: 165 case B_CMY24: case B_CMY32: case B_CMYA32: case B_CMYK32: 166 result = true; 167 break; 168 // unsupported 169 case B_NO_COLOR_SPACE: 170 case B_YUV9: case B_YUV12: 171 break; 172 } 173 return result; 174 } 175