1 // Copyright (C) 2011, Google Inc. All rights reserved.
3 // Redistribution and use in source and binary forms, with or without
4 // modification, are permitted provided that the following conditions are met:
6 // 1. Redistributions of source code must retain the above copyright
7 // notice, this list of conditions and the following disclaimer.
8 // 2. Redistributions in binary form must reproduce the above copyright
9 // notice, this list of conditions and the following disclaimer in the
10 // documentation and/or other materials provided with the distribution.
12 // THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND
13 // ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
14 // IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
15 // ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE
16 // FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
17 // DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
18 // SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
19 // CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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21 // OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
27 #include "WebCommon.h"
29 #if BLINK_IMPLEMENTATION
30 #include "wtf/Assertions.h"
37 // This structure is intentionally POD and fixed size so that it can be shared
38 // memory between hardware polling threads and the rest of the browser. See
39 // also WebGamepads.h.
42 static const size_t idLengthCap = 128;
43 static const size_t axesLengthCap = 16;
44 static const size_t buttonsLengthCap = 32;
55 // Is there a gamepad connected at this index?
58 // Device identifier (based on manufacturer, model, etc.).
59 WebUChar id[idLengthCap];
61 // Monotonically increasing value referring to when the data were last
63 unsigned long long timestamp;
65 // Number of valid entries in the axes array.
68 // Normalized values representing axes, in the range [-1..1].
69 float axes[axesLengthCap];
71 // Number of valid entries in the buttons array.
72 unsigned buttonsLength;
74 // Normalized values representing buttons, in the range [0..1].
75 float buttons[buttonsLengthCap];
78 #if BLINK_IMPLEMENTATION
79 COMPILE_ASSERT(sizeof(WebGamepad) == 465, WebGamepad_has_wrong_size);
86 #endif // WebGamepad_h