Add Rtcp parameters for PeerConnection senders

Bug: webrtc:7580
Change-Id: Ibcf5e849a1f11f21fa75f6d006fecf1cd54f8552
Reviewed-on: https://webrtc-review.googlesource.com/78063
Reviewed-by: Sami Kalliomäki <sakal@webrtc.org>
Reviewed-by: Taylor Brandstetter <deadbeef@webrtc.org>
Reviewed-by: Kári Helgason <kthelgason@webrtc.org>
Commit-Queue: Florent Castelli <orphis@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#23407}

sdk/objc/Framework/Classes/PeerConnection/RTCRtcpParameters+Private.h

@@ -0,0 +1,27 @@
+/*
+ *  Copyright 2018 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 "WebRTC/RTCRtcpParameters.h"
+
+#include "api/rtpparameters.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface RTCRtcpParameters ()
+
+/** Returns the equivalent native RtcpParameters structure. */
+@property(nonatomic, readonly) webrtc::RtcpParameters nativeParameters;
+
+/** Initialize the object with a native RtcpParameters structure. */
+- (instancetype)initWithNativeParameters:(const webrtc::RtcpParameters &)nativeParameters;
+
+@end
+
+NS_ASSUME_NONNULL_END

sdk/objc/Framework/Classes/PeerConnection/RTCRtcpParameters.mm

@@ -0,0 +1,39 @@
+/*
+ *  Copyright 2018 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 "RTCRtcpParameters+Private.h"
+
+#import "NSString+StdString.h"
+
+@implementation RTCRtcpParameters
+
+@synthesize cname = _cname;
+@synthesize isReducedSize = _isReducedSize;
+
+- (instancetype)init {
+  return [super init];
+}
+
+- (instancetype)initWithNativeParameters:(const webrtc::RtcpParameters &)nativeParameters {
+  if (self = [self init]) {
+    _cname = [NSString stringForStdString:nativeParameters.cname];
+    _isReducedSize = nativeParameters.reduced_size;
+  }
+  return self;
+}
+
+- (webrtc::RtcpParameters)nativeParameters {
+  webrtc::RtcpParameters parameters;
+  parameters.cname = [NSString stdStringForString:_cname];
+  parameters.reduced_size = _isReducedSize;
+  return parameters;
+}
+
+@end

sdk/objc/Framework/Classes/PeerConnection/RTCRtpParameters.mm

@@ -11,12 +11,14 @@
 #import "RTCRtpParameters+Private.h"
 
 #import "NSString+StdString.h"
+#import "RTCRtcpParameters+Private.h"
 #import "RTCRtpCodecParameters+Private.h"
 #import "RTCRtpEncodingParameters+Private.h"
 
 @implementation RTCRtpParameters
 
 @synthesize transactionId = _transactionId;
+@synthesize rtcp = _rtcp;
 @synthesize encodings = _encodings;
 @synthesize codecs = _codecs;
 
@@ -28,6 +30,7 @@
     (const webrtc::RtpParameters &)nativeParameters {
   if (self = [self init]) {
     _transactionId = [NSString stringForStdString:nativeParameters.transaction_id];
+    _rtcp = [[RTCRtcpParameters alloc] initWithNativeParameters:nativeParameters.rtcp];
     NSMutableArray *encodings = [[NSMutableArray alloc] init];
     for (const auto &encoding : nativeParameters.encodings) {
       [encodings addObject:[[RTCRtpEncodingParameters alloc]
@@ -48,6 +51,7 @@
 - (webrtc::RtpParameters)nativeParameters {
   webrtc::RtpParameters parameters;
   parameters.transaction_id = [NSString stdStringForString:_transactionId];
+  parameters.rtcp = [_rtcp nativeParameters];
   for (RTCRtpEncodingParameters *encoding in _encodings) {
     parameters.encodings.push_back(encoding.nativeParameters);
   }