1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
|
/**************************************************************************
*
* Copyright 2009 VMware, Inc. All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sub license, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial portions
* of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
* IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
**************************************************************************/
#ifndef PATH_UTILS_H
#define PATH_UTILS_H
#include "VG/openvg.h"
#define SEGMENT_COMMAND(command) /* Extract segment type */ \
((command) & 0x1e)
#define SEGMENT_ABS_REL(command) /* Extract absolute/relative bit */ \
((command) & 0x1)
static INLINE VGint size_for_datatype(VGPathDatatype datatype)
{
switch(datatype) {
case VG_PATH_DATATYPE_S_8:
return 1;
case VG_PATH_DATATYPE_S_16:
return 2;
case VG_PATH_DATATYPE_S_32:
return 4;
case VG_PATH_DATATYPE_F:
return 4;
default:
assert(!"unknown datatype");
}
return 0;
}
static INLINE VGint num_elements_for_segments(const VGubyte *segments,
VGint num_segments)
{
VGint i;
VGint count = 0;
for (i = 0; i < num_segments; ++i) {
VGubyte segment = segments[i];
VGint command = SEGMENT_COMMAND(segment);
switch(command) {
case VG_CLOSE_PATH:
break;
case VG_MOVE_TO:
count += 2;
break;
case VG_LINE_TO:
count += 2;
break;
case VG_HLINE_TO:
count += 1;
break;
case VG_VLINE_TO:
count += 1;
break;
case VG_QUAD_TO:
count += 4;
break;
case VG_CUBIC_TO:
count += 6;
break;
case VG_SQUAD_TO:
count += 2;
break;
case VG_SCUBIC_TO:
count += 4;
break;
case VG_SCCWARC_TO:
count += 5;
break;
case VG_SCWARC_TO:
count += 5;
break;
case VG_LCCWARC_TO:
count += 5;
break;
case VG_LCWARC_TO:
count += 5;
break;
default:
assert(!"Unknown segment!");
}
}
return count;
}
#endif
|
