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IABSD.fr/xenocara/xserver/render/picture.h
matthieu
- xserver/render/picture.h
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/* * * Copyright © 2000 SuSE, Inc. * * Permission to use, copy, modify, distribute, and sell this software and its * documentation for any purpose is hereby granted without fee, provided that * the above copyright notice appear in all copies and that both that * copyright notice and this permission notice appear in supporting * documentation, and that the name of SuSE not be used in advertising or * publicity pertaining to distribution of the software without specific, * written prior permission. SuSE makes no representations about the * suitability of this software for any purpose. It is provided "as is" * without express or implied warranty. * * SuSE DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL SuSE * BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. * * Author: Keith Packard, SuSE, Inc. */ #ifndef _PICTURE_H_ #define _PICTURE_H_ #include "privates.h" #include <pixman.h> typedef struct _DirectFormat *DirectFormatPtr; typedef struct _PictFormat *PictFormatPtr; typedef struct _Picture *PicturePtr; /* * While the protocol is generous in format support, the * sample implementation allows only packed RGB and GBR * representations for data to simplify software rendering, */ #define PICT_FORMAT(bpp,type,a,r,g,b) PIXMAN_FORMAT(bpp, type, a, r, g, b) /* * gray/color formats use a visual index instead of argb */ #define PICT_VISFORMAT(bpp,type,vi) (((bpp) << 24) | \ ((type) << 16) | \ ((vi))) #define PICT_FORMAT_BPP(f) PIXMAN_FORMAT_BPP(f) #define PICT_FORMAT_TYPE(f) PIXMAN_FORMAT_TYPE(f) #define PICT_FORMAT_A(f) PIXMAN_FORMAT_A(f) #define PICT_FORMAT_R(f) PIXMAN_FORMAT_R(f) #define PICT_FORMAT_G(f) PIXMAN_FORMAT_G(f) #define PICT_FORMAT_B(f) PIXMAN_FORMAT_B(f) #define PICT_FORMAT_RGB(f) PIXMAN_FORMAT_RGB(f) #define PICT_FORMAT_VIS(f) PIXMAN_FORMAT_VIS(f) #define PICT_TYPE_OTHER PIXMAN_TYPE_OTHER #define PICT_TYPE_A PIXMAN_TYPE_A #define PICT_TYPE_ARGB PIXMAN_TYPE_ARGB #define PICT_TYPE_ABGR PIXMAN_TYPE_ABGR #define PICT_TYPE_COLOR PIXMAN_TYPE_COLOR #define PICT_TYPE_GRAY PIXMAN_TYPE_GRAY #define PICT_TYPE_BGRA PIXMAN_TYPE_BGRA #define PICT_FORMAT_COLOR(f) PIXMAN_FORMAT_COLOR(f) /* 32bpp formats */ typedef enum _PictFormatShort { PICT_a2r10g10b10 = PIXMAN_a2r10g10b10, PICT_x2r10g10b10 = PIXMAN_x2r10g10b10, PICT_a2b10g10r10 = PIXMAN_a2b10g10r10, PICT_x2b10g10r10 = PIXMAN_x2b10g10r10, PICT_a8r8g8b8 = PIXMAN_a8r8g8b8, PICT_x8r8g8b8 = PIXMAN_x8r8g8b8, PICT_a8b8g8r8 = PIXMAN_a8b8g8r8, PICT_x8b8g8r8 = PIXMAN_x8b8g8r8, PICT_b8g8r8a8 = PIXMAN_b8g8r8a8, PICT_b8g8r8x8 = PIXMAN_b8g8r8x8, /* 24bpp formats */ PICT_r8g8b8 = PIXMAN_r8g8b8, PICT_b8g8r8 = PIXMAN_b8g8r8, /* 16bpp formats */ PICT_r5g6b5 = PIXMAN_r5g6b5, PICT_b5g6r5 = PIXMAN_b5g6r5, PICT_a1r5g5b5 = PIXMAN_a1r5g5b5, PICT_x1r5g5b5 = PIXMAN_x1r5g5b5, PICT_a1b5g5r5 = PIXMAN_a1b5g5r5, PICT_x1b5g5r5 = PIXMAN_x1b5g5r5, PICT_a4r4g4b4 = PIXMAN_a4r4g4b4, PICT_x4r4g4b4 = PIXMAN_x4r4g4b4, PICT_a4b4g4r4 = PIXMAN_a4b4g4r4, PICT_x4b4g4r4 = PIXMAN_x4b4g4r4, /* 8bpp formats */ PICT_a8 = PIXMAN_a8, PICT_r3g3b2 = PIXMAN_r3g3b2, PICT_b2g3r3 = PIXMAN_b2g3r3, PICT_a2r2g2b2 = PIXMAN_a2r2g2b2, PICT_a2b2g2r2 = PIXMAN_a2b2g2r2, PICT_c8 = PIXMAN_c8, PICT_g8 = PIXMAN_g8, PICT_x4a4 = PIXMAN_x4a4, PICT_x4c4 = PIXMAN_x4c4, PICT_x4g4 = PIXMAN_x4g4, /* 4bpp formats */ PICT_a4 = PIXMAN_a4, PICT_r1g2b1 = PIXMAN_r1g2b1, PICT_b1g2r1 = PIXMAN_b1g2r1, PICT_a1r1g1b1 = PIXMAN_a1r1g1b1, PICT_a1b1g1r1 = PIXMAN_a1b1g1r1, PICT_c4 = PIXMAN_c4, PICT_g4 = PIXMAN_g4, /* 1bpp formats */ PICT_a1 = PIXMAN_a1, PICT_g1 = PIXMAN_g1 } PictFormatShort; /* * For dynamic indexed visuals (GrayScale and PseudoColor), these control the * selection of colors allocated for drawing to Pictures. The default * policy depends on the size of the colormap: * * Size Default Policy * ---------------------------- * < 64 PolicyMono * < 256 PolicyGray * 256 PolicyColor (only on PseudoColor) * * The actual allocation code lives in miindex.c, and so is * austensibly server dependent, but that code does: * * PolicyMono Allocate no additional colors, use black and white * PolicyGray Allocate 13 gray levels (11 cells used) * PolicyColor Allocate a 4x4x4 cube and 13 gray levels (71 cells used) * PolicyAll Allocate as big a cube as possible, fill with gray (all) * * Here's a picture to help understand how many colors are * actually allocated (this is just the gray ramp): * * gray level * all 0000 1555 2aaa 4000 5555 6aaa 8000 9555 aaaa bfff d555 eaaa ffff * b/w 0000 ffff * 4x4x4 5555 aaaa * extra 1555 2aaa 4000 6aaa 8000 9555 bfff d555 eaaa * * The default colormap supplies two gray levels (black/white), the * 4x4x4 cube allocates another two and nine more are allocated to fill * in the 13 levels. When the 4x4x4 cube is not allocated, a total of * 11 cells are allocated. */ #define PictureCmapPolicyInvalid -1 #define PictureCmapPolicyDefault 0 #define PictureCmapPolicyMono 1 #define PictureCmapPolicyGray 2 #define PictureCmapPolicyColor 3 #define PictureCmapPolicyAll 4 extern _X_EXPORT int PictureCmapPolicy; extern _X_EXPORT int PictureParseCmapPolicy(const char *name); extern _X_EXPORT int RenderErrBase; /* Fixed point updates from Carl Worth, USC, Information Sciences Institute */ typedef pixman_fixed_32_32_t xFixed_32_32; typedef pixman_fixed_48_16_t xFixed_48_16; #define MAX_FIXED_48_16 pixman_max_fixed_48_16 #define MIN_FIXED_48_16 pixman_min_fixed_48_16 typedef pixman_fixed_1_31_t xFixed_1_31; typedef pixman_fixed_1_16_t xFixed_1_16; typedef pixman_fixed_16_16_t xFixed_16_16; /* * An unadorned "xFixed" is the same as xFixed_16_16, * (since it's quite common in the code) */ typedef pixman_fixed_t xFixed; #define XFIXED_BITS 16 #define xFixedToInt(f) pixman_fixed_to_int(f) #define IntToxFixed(i) pixman_int_to_fixed(i) #define xFixedE pixman_fixed_e #define xFixed1 pixman_fixed_1 #define xFixed1MinusE pixman_fixed_1_minus_e #define xFixedFrac(f) pixman_fixed_frac(f) #define xFixedFloor(f) pixman_fixed_floor(f) #define xFixedCeil(f) pixman_fixed_ceil(f) #define xFixedFraction(f) pixman_fixed_fraction(f) #define xFixedMod2(f) pixman_fixed_mod2(f) /* whether 't' is a well defined not obviously empty trapezoid */ #define xTrapezoidValid(t) ((t)->left.p1.y != (t)->left.p2.y && \ (t)->right.p1.y != (t)->right.p2.y && \ (int) ((t)->bottom - (t)->top) > 0) /* * Standard NTSC luminance conversions: * * y = r * 0.299 + g * 0.587 + b * 0.114 * * Approximate this for a bit more speed: * * y = (r * 153 + g * 301 + b * 58) / 512 * * This gives 17 bits of luminance; to get 15 bits, lop the low two */ #define CvtR8G8B8toY15(s) (((((s) >> 16) & 0xff) * 153 + \ (((s) >> 8) & 0xff) * 301 + \ (((s) ) & 0xff) * 58) >> 2) #endif /* _PICTURE_H_ */