Objective C API to read and set RtpParameters

webrtc/api/objc/RTCRtpSender.h

Index: webrtc/api/objc/RTCRtpSender.h
diff --git a/webrtc/api/objc/RTCRtpSender.h b/webrtc/api/objc/RTCRtpSender.h
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+++ b/webrtc/api/objc/RTCRtpSender.h
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+/*
+ *  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 <Foundation/Foundation.h>
+
+#import "webrtc/api/objc/RTCRtpParameters.h"
+#import "webrtc/api/objc/RTCMediaStreamTrack.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@protocol RTCRtpSender <NSObject>
+
+/** The currently active RTCRtpParameters, as defined in
+ *  https://www.w3.org/TR/webrtc/#idl-def-RTCRtpParameters.
+ */
+@property(nonatomic, readonly) RTCRtpParameters *parameters;
+
+/** The RTCMediaStreamTrack associated with the sender.
+ *  Note: reading this property returns a new instance of
+ *  RTCMediaStreamTrack. Use isEqual: instead of == to compare
+ *  RTCMediaStreamTrack instances.
+ */
+@property(nonatomic, readonly) RTCMediaStreamTrack *track;
+
+/** Set the new RTCRtpParameters to be used by the sender.
+ *  Returns YES if the new parameters were applied, NO otherwise.
+ */
+- (BOOL)setParameters:(RTCRtpParameters *)parameters;
+
+@end
+
+@interface RTCRtpSender : NSObject <RTCRtpSender>
+
+- (instancetype)init NS_UNAVAILABLE;
+
+@end
+
+NS_ASSUME_NONNULL_END