/src/mozilla-central/dom/midi/MIDIMessageQueue.cpp
Line | Count | Source (jump to first uncovered line) |
1 | | /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ |
2 | | /* vim:set ts=2 sw=2 sts=2 et cindent: */ |
3 | | /* This Source Code Form is subject to the terms of the Mozilla Public |
4 | | * License, v. 2.0. If a copy of the MPL was not distributed with this |
5 | | * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
6 | | |
7 | | #include "MIDIMessageQueue.h" |
8 | | |
9 | | namespace mozilla { |
10 | | namespace dom { |
11 | | |
12 | | MIDIMessageQueue::MIDIMessageQueue() |
13 | | : mMutex("MIDIMessageQueue::mMutex") |
14 | 0 | { |
15 | 0 | } |
16 | | |
17 | | class MIDIMessageTimestampComparator |
18 | | { |
19 | | public: |
20 | | bool Equals(const MIDIMessage& a, const MIDIMessage& b) const |
21 | 0 | { |
22 | 0 | return a.timestamp() == b.timestamp(); |
23 | 0 | } |
24 | | bool LessThan(const MIDIMessage& a, const MIDIMessage& b) const |
25 | 0 | { |
26 | 0 | return a.timestamp() < b.timestamp(); |
27 | 0 | } |
28 | | }; |
29 | | |
30 | | void |
31 | | MIDIMessageQueue::Add(nsTArray<MIDIMessage>& aMsg) |
32 | 0 | { |
33 | 0 | MutexAutoLock lock(mMutex); |
34 | 0 | for (auto msg : aMsg) { |
35 | 0 | mMessageQueue.InsertElementSorted(msg, MIDIMessageTimestampComparator()); |
36 | 0 | } |
37 | 0 | } |
38 | | |
39 | | void |
40 | | MIDIMessageQueue::GetMessagesBefore(TimeStamp aTimestamp, nsTArray<MIDIMessage>& aMsgQueue) |
41 | 0 | { |
42 | 0 | MutexAutoLock lock(mMutex); |
43 | 0 | int i = 0; |
44 | 0 | for (auto msg : mMessageQueue) { |
45 | 0 | if (aTimestamp < msg.timestamp()) { |
46 | 0 | break; |
47 | 0 | } |
48 | 0 | aMsgQueue.AppendElement(msg); |
49 | 0 | i++; |
50 | 0 | } |
51 | 0 | if (i > 0) { |
52 | 0 | mMessageQueue.RemoveElementsAt(0, i); |
53 | 0 | } |
54 | 0 | } |
55 | | |
56 | | void |
57 | | MIDIMessageQueue::GetMessages(nsTArray<MIDIMessage>& aMsgQueue) |
58 | 0 | { |
59 | 0 | MutexAutoLock lock(mMutex); |
60 | 0 | aMsgQueue.AppendElements(mMessageQueue); |
61 | 0 | mMessageQueue.Clear(); |
62 | 0 | } |
63 | | |
64 | | void |
65 | | MIDIMessageQueue::Clear() |
66 | 0 | { |
67 | 0 | MutexAutoLock lock(mMutex); |
68 | 0 | mMessageQueue.Clear(); |
69 | 0 | } |
70 | | |
71 | | void |
72 | | MIDIMessageQueue::ClearAfterNow() |
73 | 0 | { |
74 | 0 | MutexAutoLock lock(mMutex); |
75 | 0 | TimeStamp now = TimeStamp::Now(); |
76 | 0 | int i = 0; |
77 | 0 | for (auto msg : mMessageQueue) { |
78 | 0 | if (now < msg.timestamp()) { |
79 | 0 | break; |
80 | 0 | } |
81 | 0 | i++; |
82 | 0 | } |
83 | 0 | if (i > 0) { |
84 | 0 | mMessageQueue.RemoveElementsAt(0, i); |
85 | 0 | } |
86 | 0 | } |
87 | | |
88 | | } // namespace dom |
89 | | } // namespace mozilla |