1 /**
2  * \file format_utils.h
3  * A collection of format conversion utility functions.
4  */
5 
6 /*
7  * Mesa 3-D graphics library
8  *
9  * Copyright (C) 1999-2006  Brian Paul  All Rights Reserved.
10  * Copyright (C) 2014  Intel Corporation  All Rights Reserved.
11  *
12  * Permission is hereby granted, free of charge, to any person obtaining a
13  * copy of this software and associated documentation files (the "Software"),
14  * to deal in the Software without restriction, including without limitation
15  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
16  * and/or sell copies of the Software, and to permit persons to whom the
17  * Software is furnished to do so, subject to the following conditions:
18  *
19  * The above copyright notice and this permission notice shall be included
20  * in all copies or substantial portions of the Software.
21  *
22  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
23  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
24  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
25  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
26  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
27  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
28  * OTHER DEALINGS IN THE SOFTWARE.
29  */
30 
31 #ifndef FORMAT_UTILS_H
32 #define FORMAT_UTILS_H
33 
34 #include "formats.h"
35 
36 #include "macros.h"
37 #include "util/rounding.h"
38 #include "util/half_float.h"
39 #include "util/format/format_utils.h"
40 
41 extern const mesa_array_format RGBA32_FLOAT;
42 extern const mesa_array_format RGBA8_UBYTE;
43 extern const mesa_array_format RGBA32_UINT;
44 extern const mesa_array_format RGBA32_INT;
45 
46 bool
47 _mesa_format_to_array(mesa_format, GLenum *type, int *num_components,
48                       uint8_t swizzle[4], bool *normalized);
49 
50 void
51 _mesa_swizzle_and_convert(void *dst,
52                           enum mesa_array_format_datatype dst_type,
53                           int num_dst_channels,
54                           const void *src,
55                           enum mesa_array_format_datatype src_type,
56                           int num_src_channels,
57                           const uint8_t swizzle[4], bool normalized, int count);
58 
59 bool
60 _mesa_compute_rgba2base2rgba_component_mapping(GLenum baseFormat, uint8_t *map);
61 
62 void
63 _mesa_format_convert(void *void_dst, uint32_t dst_format, size_t dst_stride,
64                      void *void_src, uint32_t src_format, size_t src_stride,
65                      size_t width, size_t height, uint8_t *rebase_swizzle);
66 
67 #endif
68