61cb83a8ccd1dd7f671f31fa93c9d8b7be09b4ccvboxsync * Copyright © 2000 SuSE, Inc.
61cb83a8ccd1dd7f671f31fa93c9d8b7be09b4ccvboxsync * Permission to use, copy, modify, distribute, and sell this software and its
61cb83a8ccd1dd7f671f31fa93c9d8b7be09b4ccvboxsync * documentation for any purpose is hereby granted without fee, provided that
61cb83a8ccd1dd7f671f31fa93c9d8b7be09b4ccvboxsync * the above copyright notice appear in all copies and that both that
61cb83a8ccd1dd7f671f31fa93c9d8b7be09b4ccvboxsync * copyright notice and this permission notice appear in supporting
61cb83a8ccd1dd7f671f31fa93c9d8b7be09b4ccvboxsync * documentation, and that the name of SuSE not be used in advertising or
61cb83a8ccd1dd7f671f31fa93c9d8b7be09b4ccvboxsync * publicity pertaining to distribution of the software without specific,
61cb83a8ccd1dd7f671f31fa93c9d8b7be09b4ccvboxsync * written prior permission. SuSE makes no representations about the
61cb83a8ccd1dd7f671f31fa93c9d8b7be09b4ccvboxsync * suitability of this software for any purpose. It is provided "as is"
61cb83a8ccd1dd7f671f31fa93c9d8b7be09b4ccvboxsync * without express or implied warranty.
61cb83a8ccd1dd7f671f31fa93c9d8b7be09b4ccvboxsync * SuSE DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL
61cb83a8ccd1dd7f671f31fa93c9d8b7be09b4ccvboxsync * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL SuSE
61cb83a8ccd1dd7f671f31fa93c9d8b7be09b4ccvboxsync * BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
61cb83a8ccd1dd7f671f31fa93c9d8b7be09b4ccvboxsync * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
61cb83a8ccd1dd7f671f31fa93c9d8b7be09b4ccvboxsync * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
61cb83a8ccd1dd7f671f31fa93c9d8b7be09b4ccvboxsync * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
61cb83a8ccd1dd7f671f31fa93c9d8b7be09b4ccvboxsync * Author: Keith Packard, SuSE, Inc.
61cb83a8ccd1dd7f671f31fa93c9d8b7be09b4ccvboxsync * While the protocol is generous in format support, the
61cb83a8ccd1dd7f671f31fa93c9d8b7be09b4ccvboxsync * sample implementation allows only packed RGB and GBR
61cb83a8ccd1dd7f671f31fa93c9d8b7be09b4ccvboxsync * representations for data to simplify software rendering,
61cb83a8ccd1dd7f671f31fa93c9d8b7be09b4ccvboxsync#define PICT_FORMAT(bpp,type,a,r,g,b) PIXMAN_FORMAT(bpp, type, a, r, g, b)
61cb83a8ccd1dd7f671f31fa93c9d8b7be09b4ccvboxsync * gray/color formats use a visual index instead of argb
61cb83a8ccd1dd7f671f31fa93c9d8b7be09b4ccvboxsync#define PICT_VISFORMAT(bpp,type,vi) (((bpp) << 24) | \
61cb83a8ccd1dd7f671f31fa93c9d8b7be09b4ccvboxsync/* 32bpp formats */
61cb83a8ccd1dd7f671f31fa93c9d8b7be09b4ccvboxsync/* 24bpp formats */
61cb83a8ccd1dd7f671f31fa93c9d8b7be09b4ccvboxsync/* 16bpp formats */
61cb83a8ccd1dd7f671f31fa93c9d8b7be09b4ccvboxsync/* 8bpp formats */
61cb83a8ccd1dd7f671f31fa93c9d8b7be09b4ccvboxsync/* 4bpp formats */
61cb83a8ccd1dd7f671f31fa93c9d8b7be09b4ccvboxsync/* 1bpp formats */
61cb83a8ccd1dd7f671f31fa93c9d8b7be09b4ccvboxsync * For dynamic indexed visuals (GrayScale and PseudoColor), these control the
61cb83a8ccd1dd7f671f31fa93c9d8b7be09b4ccvboxsync * selection of colors allocated for drawing to Pictures. The default
61cb83a8ccd1dd7f671f31fa93c9d8b7be09b4ccvboxsync * policy depends on the size of the colormap:
61cb83a8ccd1dd7f671f31fa93c9d8b7be09b4ccvboxsync * Size Default Policy
61cb83a8ccd1dd7f671f31fa93c9d8b7be09b4ccvboxsync * ----------------------------
61cb83a8ccd1dd7f671f31fa93c9d8b7be09b4ccvboxsync * < 64 PolicyMono
61cb83a8ccd1dd7f671f31fa93c9d8b7be09b4ccvboxsync * < 256 PolicyGray
61cb83a8ccd1dd7f671f31fa93c9d8b7be09b4ccvboxsync * 256 PolicyColor (only on PseudoColor)
61cb83a8ccd1dd7f671f31fa93c9d8b7be09b4ccvboxsync * The actual allocation code lives in miindex.c, and so is
61cb83a8ccd1dd7f671f31fa93c9d8b7be09b4ccvboxsync * austensibly server dependent, but that code does:
61cb83a8ccd1dd7f671f31fa93c9d8b7be09b4ccvboxsync * PolicyMono Allocate no additional colors, use black and white
61cb83a8ccd1dd7f671f31fa93c9d8b7be09b4ccvboxsync * PolicyGray Allocate 13 gray levels (11 cells used)
61cb83a8ccd1dd7f671f31fa93c9d8b7be09b4ccvboxsync * PolicyColor Allocate a 4x4x4 cube and 13 gray levels (71 cells used)
61cb83a8ccd1dd7f671f31fa93c9d8b7be09b4ccvboxsync * PolicyAll Allocate as big a cube as possible, fill with gray (all)
61cb83a8ccd1dd7f671f31fa93c9d8b7be09b4ccvboxsync * Here's a picture to help understand how many colors are
61cb83a8ccd1dd7f671f31fa93c9d8b7be09b4ccvboxsync * actually allocated (this is just the gray ramp):
61cb83a8ccd1dd7f671f31fa93c9d8b7be09b4ccvboxsync * gray level
61cb83a8ccd1dd7f671f31fa93c9d8b7be09b4ccvboxsync * all 0000 1555 2aaa 4000 5555 6aaa 8000 9555 aaaa bfff d555 eaaa ffff
61cb83a8ccd1dd7f671f31fa93c9d8b7be09b4ccvboxsync * b/w 0000 ffff
61cb83a8ccd1dd7f671f31fa93c9d8b7be09b4ccvboxsync * 4x4x4 5555 aaaa
61cb83a8ccd1dd7f671f31fa93c9d8b7be09b4ccvboxsync * extra 1555 2aaa 4000 6aaa 8000 9555 bfff d555 eaaa
61cb83a8ccd1dd7f671f31fa93c9d8b7be09b4ccvboxsync * The default colormap supplies two gray levels (black/white), the
61cb83a8ccd1dd7f671f31fa93c9d8b7be09b4ccvboxsync * 4x4x4 cube allocates another two and nine more are allocated to fill
61cb83a8ccd1dd7f671f31fa93c9d8b7be09b4ccvboxsync * in the 13 levels. When the 4x4x4 cube is not allocated, a total of
61cb83a8ccd1dd7f671f31fa93c9d8b7be09b4ccvboxsync * 11 cells are allocated.
61cb83a8ccd1dd7f671f31fa93c9d8b7be09b4ccvboxsyncextern _X_EXPORT int PictureParseCmapPolicy(const char *name);
61cb83a8ccd1dd7f671f31fa93c9d8b7be09b4ccvboxsync/* Fixed point updates from Carl Worth, USC, Information Sciences Institute */
61cb83a8ccd1dd7f671f31fa93c9d8b7be09b4ccvboxsync * An unadorned "xFixed" is the same as xFixed_16_16,
61cb83a8ccd1dd7f671f31fa93c9d8b7be09b4ccvboxsync * (since it's quite common in the code)
61cb83a8ccd1dd7f671f31fa93c9d8b7be09b4ccvboxsync/* whether 't' is a well defined not obviously empty trapezoid */
61cb83a8ccd1dd7f671f31fa93c9d8b7be09b4ccvboxsync#define xTrapezoidValid(t) ((t)->left.p1.y != (t)->left.p2.y && \
61cb83a8ccd1dd7f671f31fa93c9d8b7be09b4ccvboxsync * Standard NTSC luminance conversions:
61cb83a8ccd1dd7f671f31fa93c9d8b7be09b4ccvboxsync * y = r * 0.299 + g * 0.587 + b * 0.114
61cb83a8ccd1dd7f671f31fa93c9d8b7be09b4ccvboxsync * Approximate this for a bit more speed:
61cb83a8ccd1dd7f671f31fa93c9d8b7be09b4ccvboxsync * y = (r * 153 + g * 301 + b * 58) / 512
61cb83a8ccd1dd7f671f31fa93c9d8b7be09b4ccvboxsync * This gives 17 bits of luminance; to get 15 bits, lop the low two
61cb83a8ccd1dd7f671f31fa93c9d8b7be09b4ccvboxsync#define CvtR8G8B8toY15(s) (((((s) >> 16) & 0xff) * 153 + \
61cb83a8ccd1dd7f671f31fa93c9d8b7be09b4ccvboxsync#endif /* _PICTURE_H_ */