Adding getParameters/setParameters APIs to RtpReceiver.

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

 /*
  *  Copyright 2015 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 "RTCPeerConnection+Private.h"
 
 #import "NSString+StdString.h"
 #import "RTCConfiguration+Private.h"
 #import "RTCDataChannel+Private.h"
 #import "RTCIceCandidate+Private.h"
 #import "RTCMediaConstraints+Private.h"
 #import "RTCMediaStream+Private.h"
 #import "RTCPeerConnectionFactory+Private.h"
+#import "RTCRtpReceiver+Private.h"
 #import "RTCRtpSender+Private.h"
 #import "RTCSessionDescription+Private.h"
 #import "RTCStatsReport+Private.h"
 #import "WebRTC/RTCLogging.h"
 
 #include <memory>
 
 #include "webrtc/base/checks.h"
 
 NSString * const kRTCPeerConnectionErrorDomain =
@@ skipping 305 matching lines @@
       _peerConnection->GetSenders());
   NSMutableArray *senders = [[NSMutableArray alloc] init];
   for (const auto &nativeSender : nativeSenders) {
     RTCRtpSender *sender =
         [[RTCRtpSender alloc] initWithNativeRtpSender:nativeSender];
     [senders addObject:sender];
   }
   return senders;
 }
 
+- (NSArray<RTCRtpReceiver *> *)receivers {
+  std::vector<rtc::scoped_refptr<webrtc::RtpReceiverInterface>> nativeReceivers(
+      _peerConnection->GetReceivers());
+  NSMutableArray *receivers = [[NSMutableArray alloc] init];
+  for (const auto &nativeReceiver : nativeReceivers) {
+    RTCRtpReceiver *receiver =
+        [[RTCRtpReceiver alloc] initWithNativeRtpReceiver:nativeReceiver];
+    [receivers addObject:receiver];
+  }
+  return receivers;
+}
+
 #pragma mark - Private
 
 + (webrtc::PeerConnectionInterface::SignalingState)nativeSignalingStateForState:
     (RTCSignalingState)state {
   switch (state) {
     case RTCSignalingStateStable:
       return webrtc::PeerConnectionInterface::kStable;
     case RTCSignalingStateHaveLocalOffer:
       return webrtc::PeerConnectionInterface::kHaveLocalOffer;
     case RTCSignalingStateHaveLocalPrAnswer:
@@ skipping 150 matching lines @@
     case RTCStatsOutputLevelDebug:
       return webrtc::PeerConnectionInterface::kStatsOutputLevelDebug;
   }
 }
 
 - (rtc::scoped_refptr<webrtc::PeerConnectionInterface>)nativePeerConnection {
   return _peerConnection;
 }
 
 @end