ObjC style fix for injectable video codecs

webrtc/sdk/objc/Framework/Headers/WebRTC/RTCVideoCodec.h

 /*
  *  Copyright 2017 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.
  */
 
@@ skipping 21 matching lines @@
 @property(nonatomic, assign) int encodedHeight;
 @property(nonatomic, assign) uint32_t timeStamp;
 @property(nonatomic, assign) long captureTimeMs;
 @property(nonatomic, assign) long ntpTimeMs;
 @property(nonatomic, assign) BOOL isTimingFrame;
 @property(nonatomic, assign) long encodeStartMs;
 @property(nonatomic, assign) long encodeFinishMs;
 @property(nonatomic, assign) RTCFrameType frameType;
 @property(nonatomic, assign) int rotation;
 @property(nonatomic, assign) BOOL completeFrame;
-@property(nonatomic, retain) NSNumber *qp;
+@property(nonatomic, strong) NSNumber *qp;
 
 @end
 
 /** Information for header. Corresponds to webrtc::RTPFragmentationHeader. */
 RTC_EXPORT
 @interface RTCRtpFragmentationHeader : NSObject
 
 @property(nonatomic, strong) NSArray<NSNumber *> *fragmentationOffset;
 @property(nonatomic, strong) NSArray<NSNumber *> *fragmentationLength;
 @property(nonatomic, strong) NSArray<NSNumber *> *fragmentationTimeDiff;
@@ skipping 28 matching lines @@
 @property(nonatomic, readonly) NSInteger payload;
 @property(nonatomic, readonly) NSString *name;
 @property(nonatomic, readonly) NSDictionary<NSString *, NSString *> *parameters;
 
 @end
 
 /** Settings for encoder. Corresponds to webrtc::VideoCodec. */
 RTC_EXPORT
 @interface RTCVideoEncoderSettings : NSObject
 
-@property(nonatomic, retain) NSString *name;
+@property(nonatomic, strong) NSString *name;
 
 @property(nonatomic, assign) unsigned short width;
 @property(nonatomic, assign) unsigned short height;
 
 @property(nonatomic, assign) unsigned int startBitrate;  // kilobits/sec.
 @property(nonatomic, assign) unsigned int maxBitrate;
 @property(nonatomic, assign) unsigned int minBitrate;
 @property(nonatomic, assign) unsigned int targetBitrate;
 
 @property(nonatomic, assign) uint32_t maxFramerate;
@@ skipping 29 matching lines @@
 - (void)destroy;
 - (NSInteger)decode:(RTCEncodedImage *)encodedImage
           missingFrames:(BOOL)missingFrames
     fragmentationHeader:(RTCRtpFragmentationHeader *)fragmentationHeader
       codecSpecificInfo:(__nullable id<RTCCodecSpecificInfo>)info
            renderTimeMs:(int64_t)renderTimeMs;
 
 @end
 
 NS_ASSUME_NONNULL_END