1 : /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
2 : /* vim: set sw=2 ts=2 et tw=80 : */
3 : /* ***** BEGIN LICENSE BLOCK *****
4 : * Version: MPL 1.1/GPL 2.0/LGPL 2.1
5 : *
6 : * The contents of this file are subject to the Mozilla Public License Version
7 : * 1.1 (the "License"); you may not use this file except in compliance with
8 : * the License. You may obtain a copy of the License at
9 : * http://www.mozilla.org/MPL/
10 : *
11 : * Software distributed under the License is distributed on an "AS IS" basis,
12 : * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
13 : * for the specific language governing rights and limitations under the
14 : * License.
15 : *
16 : * The Original Code is Mozilla Audio IPC
17 : *
18 : * The Initial Developer of the Original Code is
19 : * The Mozilla Foundation.
20 : * Portions created by the Initial Developer are Copyright (C) 2010
21 : * the Initial Developer. All Rights Reserved.
22 : *
23 : * Contributor(s):
24 : * Doug Turner <dougt@mozilla.com>
25 : *
26 : * Alternatively, the contents of this file may be used under the terms of
27 : * either the GNU General Public License Version 2 or later (the "GPL"), or
28 : * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
29 : * in which case the provisions of the GPL or the LGPL are applicable instead
30 : * of those above. If you wish to allow use of your version of this file only
31 : * under the terms of either the GPL or the LGPL, and not to allow others to
32 : * use your version of this file under the terms of the MPL, indicate your
33 : * decision by deleting the provisions above and replace them with the notice
34 : * and other provisions required by the GPL or the LGPL. If you do not delete
35 : * the provisions above, a recipient may use your version of this file under
36 : * the terms of any one of the MPL, the GPL or the LGPL.
37 : *
38 : * ***** END LICENSE BLOCK ***** */
39 :
40 : #include "mozilla/dom/AudioChild.h"
41 :
42 : namespace mozilla {
43 : namespace dom {
44 0 : NS_IMPL_THREADSAFE_ADDREF(AudioChild);
45 0 : NS_IMPL_THREADSAFE_RELEASE(AudioChild);
46 :
47 0 : AudioChild::AudioChild()
48 : : mLastPosition(-1),
49 : mLastPositionTimestamp(0),
50 : mMinWriteSize(-2),// Initial value, -2, error on -1
51 : mAudioReentrantMonitor("AudioChild.mReentrantMonitor"),
52 : mIPCOpen(true),
53 0 : mDrained(false)
54 : {
55 0 : MOZ_COUNT_CTOR(AudioChild);
56 0 : }
57 :
58 0 : AudioChild::~AudioChild()
59 : {
60 0 : MOZ_COUNT_DTOR(AudioChild);
61 0 : }
62 :
63 : void
64 0 : AudioChild::ActorDestroy(ActorDestroyReason aWhy)
65 : {
66 0 : mIPCOpen = false;
67 0 : }
68 :
69 : bool
70 0 : AudioChild::RecvPositionInFramesUpdate(const PRInt64& position,
71 : const PRInt64& time)
72 : {
73 0 : mLastPosition = position;
74 0 : mLastPositionTimestamp = time;
75 0 : return true;
76 : }
77 :
78 : bool
79 0 : AudioChild::RecvDrainDone()
80 : {
81 0 : ReentrantMonitorAutoEnter mon(mAudioReentrantMonitor);
82 0 : mDrained = true;
83 0 : mAudioReentrantMonitor.NotifyAll();
84 0 : return true;
85 : }
86 :
87 : PRInt32
88 0 : AudioChild::WaitForMinWriteSize()
89 : {
90 0 : ReentrantMonitorAutoEnter mon(mAudioReentrantMonitor);
91 : // -2 : initial value
92 0 : while (mMinWriteSize == -2 && mIPCOpen) {
93 0 : mAudioReentrantMonitor.Wait();
94 : }
95 0 : return mMinWriteSize;
96 : }
97 :
98 : bool
99 0 : AudioChild::RecvMinWriteSizeDone(const PRInt32& minFrames)
100 : {
101 0 : ReentrantMonitorAutoEnter mon(mAudioReentrantMonitor);
102 0 : mMinWriteSize = minFrames;
103 0 : mAudioReentrantMonitor.NotifyAll();
104 0 : return true;
105 : }
106 :
107 : void
108 0 : AudioChild::WaitForDrain()
109 : {
110 0 : ReentrantMonitorAutoEnter mon(mAudioReentrantMonitor);
111 0 : while (!mDrained && mIPCOpen) {
112 0 : mAudioReentrantMonitor.Wait();
113 : }
114 0 : }
115 :
116 : PRInt64
117 0 : AudioChild::GetLastKnownPosition()
118 : {
119 0 : return mLastPosition;
120 : }
121 :
122 : PRInt64
123 0 : AudioChild::GetLastKnownPositionTimestamp()
124 : {
125 0 : return mLastPositionTimestamp;
126 : }
127 :
128 : } // namespace dom
129 : } // namespace mozilla
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