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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 "RTCEnumConverter.h" | |
33 #import "RTCMediaStreamTrack+Internal.h" | |
34 | |
35 #include <memory> | |
36 | |
37 namespace webrtc { | |
38 | |
39 class RTCMediaStreamTrackObserver : public ObserverInterface { | |
40 public: | |
41 RTCMediaStreamTrackObserver(RTCMediaStreamTrack* track) { _track = track; } | |
42 | |
43 void OnChanged() override { | |
44 [_track.delegate mediaStreamTrackDidChange:_track]; | |
45 } | |
46 | |
47 private: | |
48 __weak RTCMediaStreamTrack* _track; | |
49 }; | |
50 } | |
51 | |
52 @implementation RTCMediaStreamTrack { | |
53 rtc::scoped_refptr<webrtc::MediaStreamTrackInterface> _mediaTrack; | |
54 std::unique_ptr<webrtc::RTCMediaStreamTrackObserver> _observer; | |
55 } | |
56 | |
57 @synthesize label; | |
58 | |
59 - (BOOL)isEqual:(id)other { | |
60 // Equality is purely based on the label just like the C++ implementation. | |
61 if (self == other) | |
62 return YES; | |
63 if (![other isKindOfClass:[self class]] || | |
64 ![self isKindOfClass:[other class]]) { | |
65 return NO; | |
66 } | |
67 RTCMediaStreamTrack* otherMediaStream = (RTCMediaStreamTrack*)other; | |
68 return [self.label isEqual:otherMediaStream.label]; | |
69 } | |
70 | |
71 - (NSUInteger)hash { | |
72 return [self.label hash]; | |
73 } | |
74 | |
75 - (NSString*)kind { | |
76 return @(self.mediaTrack->kind().c_str()); | |
77 } | |
78 | |
79 - (NSString*)label { | |
80 return @(self.mediaTrack->id().c_str()); | |
81 } | |
82 | |
83 - (BOOL)isEnabled { | |
84 return self.mediaTrack->enabled(); | |
85 } | |
86 | |
87 - (BOOL)setEnabled:(BOOL)enabled { | |
88 return self.mediaTrack->set_enabled(enabled); | |
89 } | |
90 | |
91 - (RTCTrackState)state { | |
92 return [RTCEnumConverter convertTrackStateToObjC:self.mediaTrack->state()]; | |
93 } | |
94 | |
95 @end | |
96 | |
97 @implementation RTCMediaStreamTrack (Internal) | |
98 | |
99 - (id)initWithMediaTrack: | |
100 (rtc::scoped_refptr<webrtc::MediaStreamTrackInterface>) | |
101 mediaTrack { | |
102 if (!mediaTrack) { | |
103 NSAssert(NO, @"nil arguments not allowed"); | |
104 self = nil; | |
105 return nil; | |
106 } | |
107 if (self = [super init]) { | |
108 _mediaTrack = mediaTrack; | |
109 label = @(mediaTrack->id().c_str()); | |
110 _observer.reset(new webrtc::RTCMediaStreamTrackObserver(self)); | |
111 _mediaTrack->RegisterObserver(_observer.get()); | |
112 } | |
113 return self; | |
114 } | |
115 | |
116 - (void)dealloc { | |
117 _mediaTrack->UnregisterObserver(_observer.get()); | |
118 } | |
119 | |
120 - (rtc::scoped_refptr<webrtc::MediaStreamTrackInterface>)mediaTrack { | |
121 return _mediaTrack; | |
122 } | |
123 | |
124 @end | |
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