Adding getParameters/setParameters APIs to RtpReceiver.

webrtc/sdk/objc/Framework/Classes/RTCRtpSender.mm

 /*
  *  Copyright 2016 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
 #import "RTCRtpSender+Private.h"
 
 #import "RTCMediaStreamTrack+Private.h"
 #import "RTCRtpParameters+Private.h"
 
 #include "webrtc/api/mediastreaminterface.h"
 
 @implementation RTCRtpSender {
   rtc::scoped_refptr<webrtc::RtpSenderInterface> _nativeRtpSender;
 }
 
-- (instancetype)initWithNativeRtpSender:
-    (rtc::scoped_refptr<webrtc::RtpSenderInterface>)nativeRtpSender {
-  if (self = [super init]) {
-    _nativeRtpSender = nativeRtpSender;
-  }
-  return self;
-}
-
 - (RTCRtpParameters *)parameters {
   return [[RTCRtpParameters alloc]
       initWithNativeParameters:_nativeRtpSender->GetParameters()];
 }
 
 - (BOOL)setParameters:(RTCRtpParameters *)parameters {
   return _nativeRtpSender->SetParameters(parameters.nativeParameters);
 }
 
 - (RTCMediaStreamTrack *)track {
   rtc::scoped_refptr<webrtc::MediaStreamTrackInterface> nativeTrack(
     _nativeRtpSender->track());
   if (nativeTrack) {
     return [[RTCMediaStreamTrack alloc] initWithNativeTrack:nativeTrack];
   }
   return nil;
 }
 
+- (BOOL)isEqual:(id)object {
+  if (self == object) {
+    return YES;
+  }
+  if (![object isMemberOfClass:[self class]]) {
+    return NO;
+  }
+  return [self isEqualToSender:(RTCRtpSender *)object];
+}
+
+- (NSUInteger)hash {
+  return (NSUInteger)_nativeRtpSender.get();
+}
+
+#pragma mark - Private
+
+- (rtc::scoped_refptr<webrtc::RtpSenderInterface>)nativeRtpSender {
+  return _nativeRtpSender;
+}
+
+- (instancetype)initWithNativeRtpSender:
+    (rtc::scoped_refptr<webrtc::RtpSenderInterface>)nativeRtpSender {
+  if (self = [super init]) {
+    _nativeRtpSender = nativeRtpSender;
+  }
+  return self;
+}
+
+- (BOOL)isEqualToSender:(RTCRtpSender *)sender {
+  if (!sender) {
+    return NO;
+  }
+  return _nativeRtpSender == sender.nativeRtpSender;
+}
+
 @end