| henrike@webrtc.org | 28e2075 | 2013-07-10 00:45:36 +0000 | [diff] [blame^] | 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 | - (id)init { |
| 48 | if ((self = [super init])) { |
| 49 | if (!(_condition = [[NSCondition alloc] init])) |
| 50 | self = nil; |
| 51 | } |
| 52 | return self; |
| 53 | } |
| 54 | |
| 55 | - (void)signal { |
| 56 | self.signaled = YES; |
| 57 | [self.condition signal]; |
| 58 | } |
| 59 | |
| 60 | - (void)wait { |
| 61 | [self.condition lock]; |
| 62 | if (!self.signaled) |
| 63 | [self.condition wait]; |
| 64 | self.signaled = NO; |
| 65 | [self.condition unlock]; |
| 66 | } |
| 67 | |
| 68 | #pragma mark - RTCSessionDescriptonDelegate methods |
| 69 | - (void)peerConnection:(RTCPeerConnection *)peerConnection |
| 70 | didCreateSessionDescription:(RTCSessionDescription *)sdp |
| 71 | error:(NSError *)error { |
| 72 | [self.condition lock]; |
| 73 | if (error) { |
| 74 | self.success = NO; |
| 75 | self.error = error.description; |
| 76 | } else { |
| 77 | self.success = YES; |
| 78 | self.sessionDescription = sdp; |
| 79 | } |
| 80 | [self signal]; |
| 81 | [self.condition unlock]; |
| 82 | } |
| 83 | |
| 84 | - (void)peerConnection:(RTCPeerConnection *)peerConnection |
| 85 | didSetSessionDescriptionWithError:(NSError *)error { |
| 86 | [self.condition lock]; |
| 87 | if (error) { |
| 88 | self.success = NO; |
| 89 | self.error = error.description; |
| 90 | } else { |
| 91 | self.success = YES; |
| 92 | } |
| 93 | [self signal]; |
| 94 | [self.condition unlock]; |
| 95 | } |
| 96 | |
| 97 | @end |