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1 /* | |
2 * libjingle | |
3 * Copyright 2013 Google Inc. | |
4 * | |
5 * Redistribution and use in source and binary forms, with or without | |
6 * modification, are permitted provided that the following conditions are met: | |
7 * | |
8 * 1. Redistributions of source code must retain the above copyright notice, | |
9 * this list of conditions and the following disclaimer. | |
10 * 2. Redistributions in binary form must reproduce the above copyright notice, | |
11 * this list of conditions and the following disclaimer in the documentation | |
12 * and/or other materials provided with the distribution. | |
13 * 3. The name of the author may not be used to endorse or promote products | |
14 * derived from this software without specific prior written permission. | |
15 * | |
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED | |
17 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF | |
18 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO | |
19 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
20 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, | |
21 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; | |
22 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, | |
23 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR | |
24 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF | |
25 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
26 */ | |
27 | |
28 #if !defined(__has_feature) || !__has_feature(objc_arc) | |
29 #error "This file requires ARC support." | |
30 #endif | |
31 | |
32 #import "RTCSessionDescriptionSyncObserver.h" | |
33 | |
34 #import "RTCSessionDescription.h" | |
35 | |
36 @interface RTCSessionDescriptionSyncObserver () | |
37 | |
38 // CondVar used to wait for, and signal arrival of, an SDP-related callback. | |
39 @property(nonatomic, strong) NSCondition* condition; | |
40 // Whether an SDP-related callback has fired; cleared before wait returns. | |
41 @property(atomic, assign) BOOL signaled; | |
42 | |
43 @end | |
44 | |
45 @implementation RTCSessionDescriptionSyncObserver | |
46 | |
47 @synthesize error = _error; | |
48 @synthesize sessionDescription = _sessionDescription; | |
49 @synthesize success = _success; | |
50 @synthesize condition = _condition; | |
51 @synthesize signaled = _signaled; | |
52 | |
53 - (id)init { | |
54 if ((self = [super init])) { | |
55 if (!(_condition = [[NSCondition alloc] init])) | |
56 self = nil; | |
57 } | |
58 return self; | |
59 } | |
60 | |
61 - (void)signal { | |
62 self.signaled = YES; | |
63 [self.condition signal]; | |
64 } | |
65 | |
66 - (void)wait { | |
67 [self.condition lock]; | |
68 if (!self.signaled) | |
69 [self.condition wait]; | |
70 self.signaled = NO; | |
71 [self.condition unlock]; | |
72 } | |
73 | |
74 #pragma mark - RTCSessionDescriptionDelegate methods | |
75 - (void)peerConnection:(RTCPeerConnection*)peerConnection | |
76 didCreateSessionDescription:(RTCSessionDescription*)sdp | |
77 error:(NSError*)error { | |
78 [self.condition lock]; | |
79 if (error) { | |
80 self.success = NO; | |
81 self.error = error.description; | |
82 } else { | |
83 self.success = YES; | |
84 self.sessionDescription = sdp; | |
85 } | |
86 [self signal]; | |
87 [self.condition unlock]; | |
88 } | |
89 | |
90 - (void)peerConnection:(RTCPeerConnection*)peerConnection | |
91 didSetSessionDescriptionWithError:(NSError*)error { | |
92 [self.condition lock]; | |
93 if (error) { | |
94 self.success = NO; | |
95 self.error = error.description; | |
96 } else { | |
97 self.success = YES; | |
98 } | |
99 [self signal]; | |
100 [self.condition unlock]; | |
101 } | |
102 | |
103 @end | |
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