245 lines
8.3 KiB
C
245 lines
8.3 KiB
C
/*
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*
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* Copyright © 2000 SuSE, Inc.
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*
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* Permission to use, copy, modify, distribute, and sell this software and its
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* documentation for any purpose is hereby granted without fee, provided that
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* the above copyright notice appear in all copies and that both that
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* copyright notice and this permission notice appear in supporting
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* documentation, and that the name of SuSE not be used in advertising or
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* publicity pertaining to distribution of the software without specific,
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* written prior permission. SuSE makes no representations about the
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* suitability of this software for any purpose. It is provided "as is"
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* without express or implied warranty.
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*
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* SuSE DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL SuSE
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* BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
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* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
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* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*
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* Author: Keith Packard, SuSE, Inc.
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*/
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#ifndef _PICTURE_H_
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#define _PICTURE_H_
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typedef struct _DirectFormat *DirectFormatPtr;
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typedef struct _PictFormat *PictFormatPtr;
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typedef struct _Picture *PicturePtr;
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/*
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* While the protocol is generous in format support, the
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* sample implementation allows only packed RGB and GBR
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* representations for data to simplify software rendering,
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*/
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#define PICT_FORMAT(bpp,type,a,r,g,b) (((bpp) << 24) | \
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((type) << 16) | \
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((a) << 12) | \
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((r) << 8) | \
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((g) << 4) | \
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((b)))
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/*
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* gray/color formats use a visual index instead of argb
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*/
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#define PICT_VISFORMAT(bpp,type,vi) (((bpp) << 24) | \
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((type) << 16) | \
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((vi)))
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#define PICT_FORMAT_BPP(f) (((f) >> 24) )
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#define PICT_FORMAT_TYPE(f) (((f) >> 16) & 0xff)
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#define PICT_FORMAT_A(f) (((f) >> 12) & 0x0f)
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#define PICT_FORMAT_R(f) (((f) >> 8) & 0x0f)
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#define PICT_FORMAT_G(f) (((f) >> 4) & 0x0f)
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#define PICT_FORMAT_B(f) (((f) ) & 0x0f)
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#define PICT_FORMAT_RGB(f) (((f) ) & 0xfff)
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#define PICT_FORMAT_VIS(f) (((f) ) & 0xffff)
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#define PICT_TYPE_OTHER 0
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#define PICT_TYPE_A 1
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#define PICT_TYPE_ARGB 2
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#define PICT_TYPE_ABGR 3
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#define PICT_TYPE_COLOR 4
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#define PICT_TYPE_GRAY 5
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#define PICT_FORMAT_COLOR(f) (PICT_FORMAT_TYPE(f) & 2)
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/* 32bpp formats */
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typedef enum _PictFormatShort {
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PICT_a8r8g8b8 = PICT_FORMAT(32,PICT_TYPE_ARGB,8,8,8,8),
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PICT_x8r8g8b8 = PICT_FORMAT(32,PICT_TYPE_ARGB,0,8,8,8),
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PICT_a8b8g8r8 = PICT_FORMAT(32,PICT_TYPE_ABGR,8,8,8,8),
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PICT_x8b8g8r8 = PICT_FORMAT(32,PICT_TYPE_ABGR,0,8,8,8),
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/* 24bpp formats */
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PICT_r8g8b8 = PICT_FORMAT(24,PICT_TYPE_ARGB,0,8,8,8),
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PICT_b8g8r8 = PICT_FORMAT(24,PICT_TYPE_ABGR,0,8,8,8),
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/* 16bpp formats */
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PICT_r5g6b5 = PICT_FORMAT(16,PICT_TYPE_ARGB,0,5,6,5),
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PICT_b5g6r5 = PICT_FORMAT(16,PICT_TYPE_ABGR,0,5,6,5),
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PICT_a1r5g5b5 = PICT_FORMAT(16,PICT_TYPE_ARGB,1,5,5,5),
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PICT_x1r5g5b5 = PICT_FORMAT(16,PICT_TYPE_ARGB,0,5,5,5),
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PICT_a1b5g5r5 = PICT_FORMAT(16,PICT_TYPE_ABGR,1,5,5,5),
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PICT_x1b5g5r5 = PICT_FORMAT(16,PICT_TYPE_ABGR,0,5,5,5),
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PICT_a4r4g4b4 = PICT_FORMAT(16,PICT_TYPE_ARGB,4,4,4,4),
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PICT_x4r4g4b4 = PICT_FORMAT(16,PICT_TYPE_ARGB,0,4,4,4),
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PICT_a4b4g4r4 = PICT_FORMAT(16,PICT_TYPE_ABGR,4,4,4,4),
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PICT_x4b4g4r4 = PICT_FORMAT(16,PICT_TYPE_ABGR,0,4,4,4),
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/* 8bpp formats */
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PICT_a8 = PICT_FORMAT(8,PICT_TYPE_A,8,0,0,0),
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PICT_r3g3b2 = PICT_FORMAT(8,PICT_TYPE_ARGB,0,3,3,2),
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PICT_b2g3r3 = PICT_FORMAT(8,PICT_TYPE_ABGR,0,3,3,2),
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PICT_a2r2g2b2 = PICT_FORMAT(8,PICT_TYPE_ARGB,2,2,2,2),
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PICT_a2b2g2r2 = PICT_FORMAT(8,PICT_TYPE_ABGR,2,2,2,2),
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PICT_c8 = PICT_FORMAT(8,PICT_TYPE_COLOR,0,0,0,0),
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PICT_g8 = PICT_FORMAT(8,PICT_TYPE_GRAY,0,0,0,0),
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PICT_x4a4 = PICT_FORMAT(8,PICT_TYPE_A,4,0,0,0),
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PICT_x4c4 = PICT_FORMAT(8,PICT_TYPE_COLOR,0,0,0,0),
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PICT_x4g4 = PICT_FORMAT(8,PICT_TYPE_GRAY,0,0,0,0),
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/* 4bpp formats */
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PICT_a4 = PICT_FORMAT(4,PICT_TYPE_A,4,0,0,0),
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PICT_r1g2b1 = PICT_FORMAT(4,PICT_TYPE_ARGB,0,1,2,1),
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PICT_b1g2r1 = PICT_FORMAT(4,PICT_TYPE_ABGR,0,1,2,1),
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PICT_a1r1g1b1 = PICT_FORMAT(4,PICT_TYPE_ARGB,1,1,1,1),
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PICT_a1b1g1r1 = PICT_FORMAT(4,PICT_TYPE_ABGR,1,1,1,1),
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PICT_c4 = PICT_FORMAT(4,PICT_TYPE_COLOR,0,0,0,0),
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PICT_g4 = PICT_FORMAT(4,PICT_TYPE_GRAY,0,0,0,0),
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/* 1bpp formats */
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PICT_a1 = PICT_FORMAT(1,PICT_TYPE_A,1,0,0,0),
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PICT_g1 = PICT_FORMAT(1,PICT_TYPE_GRAY,0,0,0,0),
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} PictFormatShort;
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/*
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* For dynamic indexed visuals (GrayScale and PseudoColor), these control the
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* selection of colors allocated for drawing to Pictures. The default
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* policy depends on the size of the colormap:
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*
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* Size Default Policy
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* ----------------------------
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* < 64 PolicyMono
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* < 256 PolicyGray
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* 256 PolicyColor (only on PseudoColor)
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*
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* The actual allocation code lives in miindex.c, and so is
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* austensibly server dependent, but that code does:
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*
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* PolicyMono Allocate no additional colors, use black and white
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* PolicyGray Allocate 13 gray levels (11 cells used)
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* PolicyColor Allocate a 4x4x4 cube and 13 gray levels (71 cells used)
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* PolicyAll Allocate as big a cube as possible, fill with gray (all)
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*
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* Here's a picture to help understand how many colors are
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* actually allocated (this is just the gray ramp):
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*
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* gray level
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* all 0000 1555 2aaa 4000 5555 6aaa 8000 9555 aaaa bfff d555 eaaa ffff
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* b/w 0000 ffff
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* 4x4x4 5555 aaaa
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* extra 1555 2aaa 4000 6aaa 8000 9555 bfff d555 eaaa
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*
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* The default colormap supplies two gray levels (black/white), the
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* 4x4x4 cube allocates another two and nine more are allocated to fill
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* in the 13 levels. When the 4x4x4 cube is not allocated, a total of
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* 11 cells are allocated.
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*/
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#define PictureCmapPolicyInvalid -1
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#define PictureCmapPolicyDefault 0
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#define PictureCmapPolicyMono 1
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#define PictureCmapPolicyGray 2
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#define PictureCmapPolicyColor 3
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#define PictureCmapPolicyAll 4
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extern int PictureCmapPolicy;
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int PictureParseCmapPolicy (const char *name);
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extern int RenderErrBase;
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extern int RenderClientPrivateIndex;
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/* Fixed point updates from Carl Worth, USC, Information Sciences Institute */
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#if defined(WIN32) && !defined(__GNUC__)
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typedef __int64 xFixed_32_32;
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#else
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# if defined (_LP64) || \
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defined(__alpha__) || defined(__alpha) || \
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defined(ia64) || defined(__ia64__) || \
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defined(__sparc64__) || \
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defined(__s390x__) || \
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defined(amd64) || defined (__amd64__) || \
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(defined(sgi) && (_MIPS_SZLONG == 64))
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typedef long xFixed_32_32;
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# else
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# if defined(__GNUC__) && \
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((__GNUC__ > 2) || \
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((__GNUC__ == 2) && defined(__GNUC_MINOR__) && (__GNUC_MINOR__ > 7)))
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__extension__
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# endif
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typedef long long int xFixed_32_32;
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# endif
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#endif
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typedef xFixed_32_32 xFixed_48_16;
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#define MAX_FIXED_48_16 ((xFixed_48_16) 0x7fffffff)
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#define MIN_FIXED_48_16 (-((xFixed_48_16) 1 << 31))
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typedef CARD32 xFixed_1_31;
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typedef CARD32 xFixed_1_16;
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typedef INT32 xFixed_16_16;
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/*
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* An unadorned "xFixed" is the same as xFixed_16_16,
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* (since it's quite common in the code)
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*/
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typedef xFixed_16_16 xFixed;
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#define XFIXED_BITS 16
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#define xFixedToInt(f) (int) ((f) >> XFIXED_BITS)
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#define IntToxFixed(i) ((xFixed) (i) << XFIXED_BITS)
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#define xFixedE ((xFixed) 1)
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#define xFixed1 (IntToxFixed(1))
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#define xFixed1MinusE (xFixed1 - xFixedE)
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#define xFixedFrac(f) ((f) & xFixed1MinusE)
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#define xFixedFloor(f) ((f) & ~xFixed1MinusE)
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#define xFixedCeil(f) xFixedFloor((f) + xFixed1MinusE)
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#define xFixedFraction(f) ((f) & xFixed1MinusE)
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#define xFixedMod2(f) ((f) & (xFixed1 | xFixed1MinusE))
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/* whether 't' is a well defined not obviously empty trapezoid */
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#define xTrapezoidValid(t) ((t)->left.p1.y != (t)->left.p2.y && \
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(t)->right.p1.y != (t)->right.p2.y && \
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(int) ((t)->bottom - (t)->top) > 0)
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/*
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* Standard NTSC luminance conversions:
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*
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* y = r * 0.299 + g * 0.587 + b * 0.114
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*
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* Approximate this for a bit more speed:
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*
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* y = (r * 153 + g * 301 + b * 58) / 512
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*
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* This gives 17 bits of luminance; to get 15 bits, lop the low two
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*/
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#define CvtR8G8B8toY15(s) (((((s) >> 16) & 0xff) * 153 + \
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(((s) >> 8) & 0xff) * 301 + \
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(((s) ) & 0xff) * 58) >> 2)
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#endif /* _PICTURE_H_ */
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