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comparison Orchestland/Assets/OVR/Scripts/OVRPluginEvent.cs @ 1:f7675884f2a1

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Add Orchestland project
author Daiki OYAKAWA <e135764@ie.u-ryukyu.ac.jp>
date Fri, 17 Jul 2015 23:09:20 +0900
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0:347d21cdfc22 1:f7675884f2a1
1 /************************************************************************************
2
3 Copyright : Copyright 2014 Oculus VR, LLC. All Rights reserved.
4
5 Licensed under the Oculus VR Rift SDK License Version 3.2 (the "License");
6 you may not use the Oculus VR Rift SDK except in compliance with the License,
7 which is provided at the time of installation or download, or which
8 otherwise accompanies this software in either electronic or hard copy form.
9
10 You may obtain a copy of the License at
11
12 http://www.oculusvr.com/licenses/LICENSE-3.2
13
14 Unless required by applicable law or agreed to in writing, the Oculus VR SDK
15 distributed under the License is distributed on an "AS IS" BASIS,
16 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
17 See the License for the specific language governing permissions and
18 limitations under the License.
19
20 ************************************************************************************/
21
22 using UnityEngine;
23 using System;
24
25 /// <summary>
26 /// Matches the events in the native plugin.
27 /// </summary>
28 public enum RenderEventType
29 {
30 // PC
31 BeginFrame = 0,
32 EndFrame = 1,
33 Initialize = 2,
34 Destroy = 3,
35
36 // Android
37 InitRenderThread = 0,
38 Pause = 1,
39 Resume = 2,
40 LeftEyeEndFrame = 3,
41 RightEyeEndFrame = 4,
42 TimeWarp = 5,
43 PlatformUI = 6,
44 PlatformUIConfirmQuit = 7,
45 }
46
47 /// <summary>
48 /// Communicates with native plugin functions that run on the rendering thread.
49 /// </summary>
50 public static class OVRPluginEvent
51 {
52 /// <summary>
53 /// Immediately issues the given event.
54 /// </summary>
55 public static void Issue(RenderEventType eventType)
56 {
57 GL.IssuePluginEvent(EncodeType((int)eventType));
58 }
59
60 /// <summary>
61 /// Create a data channel through the single 32-bit integer we are given to
62 /// communicate with the plugin.
63 /// Split the 32-bit integer event data into two separate "send-two-bytes"
64 /// plugin events. Then issue the explicit event that makes use of the data.
65 /// </summary>
66 public static void IssueWithData(RenderEventType eventType, int eventData)
67 {
68 // Encode and send-two-bytes of data
69 GL.IssuePluginEvent(EncodeData((int)eventType, eventData, 0));
70
71 // Encode and send remaining two-bytes of data
72 GL.IssuePluginEvent(EncodeData((int)eventType, eventData, 1));
73
74 // Explicit event that uses the data
75 GL.IssuePluginEvent(EncodeType((int)eventType));
76 }
77
78 // PRIVATE MEMBERS
79 //------------------------------
80 // Pack event data into a Uint32:
81 // - isDataFlag
82 // - bytePos
83 // - eventId data is associated with
84 // - 2-bytes of event data
85 //
86 // 31 30 29...25 24...16 15...0
87 // [data][pos][eventid][unused][payload]
88 //------------------------------
89 private const UInt32 IS_DATA_FLAG = 0x80000000;
90 private const UInt32 DATA_POS_MASK = 0x40000000;
91 private const int DATA_POS_SHIFT = 30;
92 private const UInt32 EVENT_TYPE_MASK = 0x3E000000;
93 private const int EVENT_TYPE_SHIFT = 25;
94 private const UInt32 PAYLOAD_MASK = 0x0000FFFF;
95 private const int PAYLOAD_SHIFT = 16;
96
97 private static int EncodeType(int eventType)
98 {
99 return (int)((UInt32)eventType & ~IS_DATA_FLAG); // make sure upper bit is not set
100 }
101
102 private static int EncodeData(int eventId, int eventData, int pos)
103 {
104 UInt32 data = 0;
105 data |= IS_DATA_FLAG;
106 data |= (((UInt32)pos << DATA_POS_SHIFT) & DATA_POS_MASK);
107 data |= (((UInt32)eventId << EVENT_TYPE_SHIFT) & EVENT_TYPE_MASK);
108 data |= (((UInt32)eventData >> (pos * PAYLOAD_SHIFT)) & PAYLOAD_MASK);
109
110 return (int)data;
111 }
112
113 private static int DecodeData(int eventData)
114 {
115 // bool hasData = (((UInt32)eventData & IS_DATA_FLAG) != 0);
116 UInt32 pos = (((UInt32)eventData & DATA_POS_MASK) >> DATA_POS_SHIFT);
117 // UInt32 eventId = (((UInt32)eventData & EVENT_TYPE_MASK) >> EVENT_TYPE_SHIFT);
118 UInt32 payload = (((UInt32)eventData & PAYLOAD_MASK) << (PAYLOAD_SHIFT * (int)pos));
119
120 return (int)payload;
121 }
122 }