u_format.h revision ac400ffce62be47fc77e8d10cabcd39b92b6c627 
1/**************************************************************************
2 *
3 * Copyright 2009 Vmware, Inc.
4 * All Rights Reserved.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sub license, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
13 *
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
16 * of the Software.
17 *
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
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22 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
25 *
26 **************************************************************************/
27
28
29#ifndef U_FORMAT_H
30#define U_FORMAT_H
31
32
33#include "pipe/p_format.h"
34
35
36enum util_format_layout {
37   UTIL_FORMAT_LAYOUT_SCALAR = 0,
38   UTIL_FORMAT_LAYOUT_ARITH = 1,
39   UTIL_FORMAT_LAYOUT_ARRAY = 2,
40   UTIL_FORMAT_LAYOUT_YUV = 3,
41   UTIL_FORMAT_LAYOUT_DXT = 4
42};
43
44
45struct util_format_block
46{
47   /** Block width in pixels */
48   unsigned width;
49
50   /** Block height in pixels */
51   unsigned height;
52
53   /** Block size in bits */
54   unsigned bits;
55};
56
57
58enum util_format_type {
59   UTIL_FORMAT_TYPE_VOID = 0,
60   UTIL_FORMAT_TYPE_UNSIGNED = 1,
61   UTIL_FORMAT_TYPE_SIGNED = 2,
62   UTIL_FORMAT_TYPE_FIXED = 3,
63   UTIL_FORMAT_TYPE_FLOAT = 4
64};
65
66
67enum util_format_swizzle {
68   UTIL_FORMAT_SWIZZLE_X = 0,
69   UTIL_FORMAT_SWIZZLE_Y = 1,
70   UTIL_FORMAT_SWIZZLE_Z = 2,
71   UTIL_FORMAT_SWIZZLE_W = 3,
72   UTIL_FORMAT_SWIZZLE_0 = 4,
73   UTIL_FORMAT_SWIZZLE_1 = 5,
74   UTIL_FORMAT_SWIZZLE_NONE = 6
75};
76
77
78enum util_format_colorspace {
79   UTIL_FORMAT_COLORSPACE_RGB = 0,
80   UTIL_FORMAT_COLORSPACE_SRGB = 1,
81   UTIL_FORMAT_COLORSPACE_YUV = 2,
82   UTIL_FORMAT_COLORSPACE_ZS = 3,
83};
84
85
86struct util_format_channel_description
87{
88   unsigned type:6;
89   unsigned normalized:1;
90   unsigned size:9;
91};
92
93
94struct util_format_description
95{
96   enum pipe_format format;
97   const char *name;
98   struct util_format_block block;
99   enum util_format_layout layout;
100   struct util_format_channel_description channel[4];
101   unsigned char swizzle[4];
102   enum util_format_colorspace colorspace;
103};
104
105
106extern const struct util_format_description
107util_format_description_table[];
108
109
110const struct util_format_description *
111util_format_description(enum pipe_format format);
112
113
114void
115util_format_read_4f(enum pipe_format format,
116                    float *dst, unsigned dst_stride,
117                    const void *src, unsigned src_stride,
118                    unsigned x, unsigned y, unsigned w, unsigned h);
119
120void
121util_format_write_4f(enum pipe_format format,
122                     const float *src, unsigned src_stride,
123                     void *dst, unsigned dst_stride,
124                     unsigned x, unsigned y, unsigned w, unsigned h);
125
126void
127util_format_read_4ub(enum pipe_format format,
128                     uint8_t *dst, unsigned dst_stride,
129                     const void *src, unsigned src_stride,
130                     unsigned x, unsigned y, unsigned w, unsigned h);
131
132void
133util_format_write_4ub(enum pipe_format format,
134                      const uint8_t *src, unsigned src_stride,
135                      void *dst, unsigned dst_stride,
136                      unsigned x, unsigned y, unsigned w, unsigned h);
137
138#endif /* ! U_FORMAT_H */
139