| 1 | /* |
| 2 | * |
| 3 | * Copyright © 2000 SuSE, Inc. |
| 4 | * |
| 5 | * Permission to use, copy, modify, distribute, and sell this software and its |
| 6 | * documentation for any purpose is hereby granted without fee, provided that |
| 7 | * the above copyright notice appear in all copies and that both that |
| 8 | * copyright notice and this permission notice appear in supporting |
| 9 | * documentation, and that the name of SuSE not be used in advertising or |
| 10 | * publicity pertaining to distribution of the software without specific, |
| 11 | * written prior permission. SuSE makes no representations about the |
| 12 | * suitability of this software for any purpose. It is provided "as is" |
| 13 | * without express or implied warranty. |
| 14 | * |
| 15 | * SuSE DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL |
| 16 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL SuSE |
| 17 | * BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
| 18 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION |
| 19 | * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN |
| 20 | * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| 21 | * |
| 22 | * Author: Keith Packard, SuSE, Inc. |
| 23 | */ |
| 24 | |
| 25 | #ifndef _PICTURE_H_ |
| 26 | #define _PICTURE_H_ |
| 27 | |
| 28 | #include "privates.h" |
| 29 | |
| 30 | #include <pixman.h> |
| 31 | |
| 32 | typedef struct _DirectFormat *DirectFormatPtr; |
| 33 | typedef struct _PictFormat *PictFormatPtr; |
| 34 | typedef struct _Picture *PicturePtr; |
| 35 | |
| 36 | /* |
| 37 | * While the protocol is generous in format support, the |
| 38 | * sample implementation allows only packed RGB and GBR |
| 39 | * representations for data to simplify software rendering, |
| 40 | */ |
| 41 | #define PICT_FORMAT(bpp,type,a,r,g,b) PIXMAN_FORMAT(bpp, type, a, r, g, b) |
| 42 | |
| 43 | /* |
| 44 | * gray/color formats use a visual index instead of argb |
| 45 | */ |
| 46 | #define PICT_VISFORMAT(bpp,type,vi) (((bpp) << 24) | \ |
| 47 | ((type) << 16) | \ |
| 48 | ((vi))) |
| 49 | |
| 50 | #define PICT_FORMAT_BPP(f) PIXMAN_FORMAT_BPP(f) |
| 51 | #define PICT_FORMAT_TYPE(f) PIXMAN_FORMAT_TYPE(f) |
| 52 | #define PICT_FORMAT_A(f) PIXMAN_FORMAT_A(f) |
| 53 | #define PICT_FORMAT_R(f) PIXMAN_FORMAT_R(f) |
| 54 | #define PICT_FORMAT_G(f) PIXMAN_FORMAT_G(f) |
| 55 | #define PICT_FORMAT_B(f) PIXMAN_FORMAT_B(f) |
| 56 | #define PICT_FORMAT_RGB(f) PIXMAN_FORMAT_RGB(f) |
| 57 | #define PICT_FORMAT_VIS(f) PIXMAN_FORMAT_VIS(f) |
| 58 | |
| 59 | #define PICT_TYPE_OTHER PIXMAN_TYPE_OTHER |
| 60 | #define PICT_TYPE_A PIXMAN_TYPE_A |
| 61 | #define PICT_TYPE_ARGB PIXMAN_TYPE_ARGB |
| 62 | #define PICT_TYPE_ABGR PIXMAN_TYPE_ABGR |
| 63 | #define PICT_TYPE_COLOR PIXMAN_TYPE_COLOR |
| 64 | #define PICT_TYPE_GRAY PIXMAN_TYPE_GRAY |
| 65 | #define PICT_TYPE_BGRA PIXMAN_TYPE_BGRA |
| 66 | |
| 67 | #define PICT_FORMAT_COLOR(f) PIXMAN_FORMAT_COLOR(f) |
| 68 | |
| 69 | /* 32bpp formats */ |
| 70 | typedef enum _PictFormatShort { |
| 71 | PICT_a2r10g10b10 = PIXMAN_a2r10g10b10, |
| 72 | PICT_x2r10g10b10 = PIXMAN_x2r10g10b10, |
| 73 | PICT_a2b10g10r10 = PIXMAN_a2b10g10r10, |
| 74 | PICT_x2b10g10r10 = PIXMAN_x2b10g10r10, |
| 75 | |
| 76 | PICT_a8r8g8b8 = PIXMAN_a8r8g8b8, |
| 77 | PICT_x8r8g8b8 = PIXMAN_x8r8g8b8, |
| 78 | PICT_a8b8g8r8 = PIXMAN_a8b8g8r8, |
| 79 | PICT_x8b8g8r8 = PIXMAN_x8b8g8r8, |
| 80 | PICT_b8g8r8a8 = PIXMAN_b8g8r8a8, |
| 81 | PICT_b8g8r8x8 = PIXMAN_b8g8r8x8, |
| 82 | |
| 83 | /* 24bpp formats */ |
| 84 | PICT_r8g8b8 = PIXMAN_r8g8b8, |
| 85 | PICT_b8g8r8 = PIXMAN_b8g8r8, |
| 86 | |
| 87 | /* 16bpp formats */ |
| 88 | PICT_r5g6b5 = PIXMAN_r5g6b5, |
| 89 | PICT_b5g6r5 = PIXMAN_b5g6r5, |
| 90 | |
| 91 | PICT_a1r5g5b5 = PIXMAN_a1r5g5b5, |
| 92 | PICT_x1r5g5b5 = PIXMAN_x1r5g5b5, |
| 93 | PICT_a1b5g5r5 = PIXMAN_a1b5g5r5, |
| 94 | PICT_x1b5g5r5 = PIXMAN_x1b5g5r5, |
| 95 | PICT_a4r4g4b4 = PIXMAN_a4r4g4b4, |
| 96 | PICT_x4r4g4b4 = PIXMAN_x4r4g4b4, |
| 97 | PICT_a4b4g4r4 = PIXMAN_a4b4g4r4, |
| 98 | PICT_x4b4g4r4 = PIXMAN_x4b4g4r4, |
| 99 | |
| 100 | /* 8bpp formats */ |
| 101 | PICT_a8 = PIXMAN_a8, |
| 102 | PICT_r3g3b2 = PIXMAN_r3g3b2, |
| 103 | PICT_b2g3r3 = PIXMAN_b2g3r3, |
| 104 | PICT_a2r2g2b2 = PIXMAN_a2r2g2b2, |
| 105 | PICT_a2b2g2r2 = PIXMAN_a2b2g2r2, |
| 106 | |
| 107 | PICT_c8 = PIXMAN_c8, |
| 108 | PICT_g8 = PIXMAN_g8, |
| 109 | |
| 110 | PICT_x4a4 = PIXMAN_x4a4, |
| 111 | |
| 112 | PICT_x4c4 = PIXMAN_x4c4, |
| 113 | PICT_x4g4 = PIXMAN_x4g4, |
| 114 | |
| 115 | /* 4bpp formats */ |
| 116 | PICT_a4 = PIXMAN_a4, |
| 117 | PICT_r1g2b1 = PIXMAN_r1g2b1, |
| 118 | PICT_b1g2r1 = PIXMAN_b1g2r1, |
| 119 | PICT_a1r1g1b1 = PIXMAN_a1r1g1b1, |
| 120 | PICT_a1b1g1r1 = PIXMAN_a1b1g1r1, |
| 121 | |
| 122 | PICT_c4 = PIXMAN_c4, |
| 123 | PICT_g4 = PIXMAN_g4, |
| 124 | |
| 125 | /* 1bpp formats */ |
| 126 | PICT_a1 = PIXMAN_a1, |
| 127 | |
| 128 | PICT_g1 = PIXMAN_g1 |
| 129 | } PictFormatShort; |
| 130 | |
| 131 | /* |
| 132 | * For dynamic indexed visuals (GrayScale and PseudoColor), these control the |
| 133 | * selection of colors allocated for drawing to Pictures. The default |
| 134 | * policy depends on the size of the colormap: |
| 135 | * |
| 136 | * Size Default Policy |
| 137 | * ---------------------------- |
| 138 | * < 64 PolicyMono |
| 139 | * < 256 PolicyGray |
| 140 | * 256 PolicyColor (only on PseudoColor) |
| 141 | * |
| 142 | * The actual allocation code lives in miindex.c, and so is |
| 143 | * austensibly server dependent, but that code does: |
| 144 | * |
| 145 | * PolicyMono Allocate no additional colors, use black and white |
| 146 | * PolicyGray Allocate 13 gray levels (11 cells used) |
| 147 | * PolicyColor Allocate a 4x4x4 cube and 13 gray levels (71 cells used) |
| 148 | * PolicyAll Allocate as big a cube as possible, fill with gray (all) |
| 149 | * |
| 150 | * Here's a picture to help understand how many colors are |
| 151 | * actually allocated (this is just the gray ramp): |
| 152 | * |
| 153 | * gray level |
| 154 | * all 0000 1555 2aaa 4000 5555 6aaa 8000 9555 aaaa bfff d555 eaaa ffff |
| 155 | * b/w 0000 ffff |
| 156 | * 4x4x4 5555 aaaa |
| 157 | * extra 1555 2aaa 4000 6aaa 8000 9555 bfff d555 eaaa |
| 158 | * |
| 159 | * The default colormap supplies two gray levels (black/white), the |
| 160 | * 4x4x4 cube allocates another two and nine more are allocated to fill |
| 161 | * in the 13 levels. When the 4x4x4 cube is not allocated, a total of |
| 162 | * 11 cells are allocated. |
| 163 | */ |
| 164 | |
| 165 | #define PictureCmapPolicyInvalid -1 |
| 166 | #define PictureCmapPolicyDefault 0 |
| 167 | #define PictureCmapPolicyMono 1 |
| 168 | #define PictureCmapPolicyGray 2 |
| 169 | #define PictureCmapPolicyColor 3 |
| 170 | #define PictureCmapPolicyAll 4 |
| 171 | |
| 172 | extern _X_EXPORT int PictureCmapPolicy; |
| 173 | |
| 174 | extern _X_EXPORT int PictureParseCmapPolicy(const char *name); |
| 175 | |
| 176 | extern _X_EXPORT int RenderErrBase; |
| 177 | |
| 178 | /* Fixed point updates from Carl Worth, USC, Information Sciences Institute */ |
| 179 | |
| 180 | typedef pixman_fixed_32_32_t xFixed_32_32; |
| 181 | |
| 182 | typedef pixman_fixed_48_16_t xFixed_48_16; |
| 183 | |
| 184 | #define MAX_FIXED_48_16 pixman_max_fixed_48_16 |
| 185 | #define MIN_FIXED_48_16 pixman_min_fixed_48_16 |
| 186 | |
| 187 | typedef pixman_fixed_1_31_t xFixed_1_31; |
| 188 | typedef pixman_fixed_1_16_t xFixed_1_16; |
| 189 | typedef pixman_fixed_16_16_t xFixed_16_16; |
| 190 | |
| 191 | /* |
| 192 | * An unadorned "xFixed" is the same as xFixed_16_16, |
| 193 | * (since it's quite common in the code) |
| 194 | */ |
| 195 | typedef pixman_fixed_t xFixed; |
| 196 | |
| 197 | #define XFIXED_BITS 16 |
| 198 | |
| 199 | #define xFixedToInt(f) pixman_fixed_to_int(f) |
| 200 | #define IntToxFixed(i) pixman_int_to_fixed(i) |
| 201 | #define xFixedE pixman_fixed_e |
| 202 | #define xFixed1 pixman_fixed_1 |
| 203 | #define xFixed1MinusE pixman_fixed_1_minus_e |
| 204 | #define xFixedFrac(f) pixman_fixed_frac(f) |
| 205 | #define xFixedFloor(f) pixman_fixed_floor(f) |
| 206 | #define xFixedCeil(f) pixman_fixed_ceil(f) |
| 207 | |
| 208 | #define xFixedFraction(f) pixman_fixed_fraction(f) |
| 209 | #define xFixedMod2(f) pixman_fixed_mod2(f) |
| 210 | |
| 211 | /* whether 't' is a well defined not obviously empty trapezoid */ |
| 212 | #define xTrapezoidValid(t) ((t)->left.p1.y != (t)->left.p2.y && \ |
| 213 | (t)->right.p1.y != (t)->right.p2.y && \ |
| 214 | (int) ((t)->bottom - (t)->top) > 0) |
| 215 | |
| 216 | /* |
| 217 | * Standard NTSC luminance conversions: |
| 218 | * |
| 219 | * y = r * 0.299 + g * 0.587 + b * 0.114 |
| 220 | * |
| 221 | * Approximate this for a bit more speed: |
| 222 | * |
| 223 | * y = (r * 153 + g * 301 + b * 58) / 512 |
| 224 | * |
| 225 | * This gives 17 bits of luminance; to get 15 bits, lop the low two |
| 226 | */ |
| 227 | |
| 228 | #define CvtR8G8B8toY15(s) (((((s) >> 16) & 0xff) * 153 + \ |
| 229 | (((s) >> 8) & 0xff) * 301 + \ |
| 230 | (((s) ) & 0xff) * 58) >> 2) |
| 231 | |
| 232 | #endif /* _PICTURE_H_ */ |