aboutsummaryrefslogtreecommitdiff
path: root/xorg-server/render/picture.h
diff options
context:
space:
mode:
Diffstat (limited to 'xorg-server/render/picture.h')
-rw-r--r--xorg-server/render/picture.h222
1 files changed, 222 insertions, 0 deletions
diff --git a/xorg-server/render/picture.h b/xorg-server/render/picture.h
new file mode 100644
index 000000000..045b29944
--- /dev/null
+++ b/xorg-server/render/picture.h
@@ -0,0 +1,222 @@
+/*
+ *
+ * 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 <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_FORMAT_COLOR(f) PIXMAN_FORMAT_COLOR(f)
+
+/* 32bpp formats */
+typedef enum _PictFormatShort {
+ PICT_a8r8g8b8 = PIXMAN_a8r8g8b8,
+ PICT_x8r8g8b8 = PIXMAN_x8r8g8b8,
+ PICT_a8b8g8r8 = PIXMAN_a8b8g8r8,
+ PICT_x8b8g8r8 = PIXMAN_x8b8g8r8,
+
+/* 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 int PictureCmapPolicy;
+
+int PictureParseCmapPolicy (const char *name);
+
+extern int RenderErrBase;
+extern DevPrivateKey RenderClientPrivateKey;
+
+/* 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_ */