Add NS_ASSUME_NONNULL_BEGIN / NS_ASSUME_NONNULL_END

Reflecting code review comments.

5 files changed, 25 insertions, 5 deletions

diff --git a/SmartDeviceLink/SDLH264ByteStreamPacketizer.h b/SmartDeviceLink/SDLH264ByteStreamPacketizer.h
index c70c00549..ee3a671b7 100644
--- a/SmartDeviceLink/SDLH264ByteStreamPacketizer.h
+++ b/SmartDeviceLink/SDLH264ByteStreamPacketizer.h
@@ -9,6 +9,8 @@
 #import <Foundation/Foundation.h>
 #import "SDLH264Packetizer.h"
 
+NS_ASSUME_NONNULL_BEGIN
+
 @interface SDLH264ByteStreamPacketizer : NSObject <SDLH264Packetizer>
 
 /**
@@ -27,6 +29,8 @@
  * @note This packetizer consolidates all NAL units into one NSData object
  *       to keep compatibility with previous implementation.
  */
-- (NSArray *)createPackets:(NSArray *)nalUnits pts:(double)pts;
+- (nullable NSArray *)createPackets:(NSArray *)nalUnits pts:(double)pts;
 
 @end
+
+NS_ASSUME_NONNULL_END
diff --git a/SmartDeviceLink/SDLH264ByteStreamPacketizer.m b/SmartDeviceLink/SDLH264ByteStreamPacketizer.m
index d3528528d..bd237fd71 100644
--- a/SmartDeviceLink/SDLH264ByteStreamPacketizer.m
+++ b/SmartDeviceLink/SDLH264ByteStreamPacketizer.m
@@ -9,6 +9,8 @@
 #import <Foundation/Foundation.h>
 #import "SDLH264ByteStreamPacketizer.h"
 
+NS_ASSUME_NONNULL_BEGIN
+
 @interface SDLH264ByteStreamPacketizer () <SDLH264Packetizer>
 @property (nonatomic) NSData *startCode;
 @end
@@ -25,7 +27,7 @@
     return self;
 }
 
-- (NSArray *)createPackets:(NSArray *)nalUnits pts:(double)pts {
+- (nullable NSArray *)createPackets:(NSArray *)nalUnits pts:(double)pts {
 
     NSMutableArray *array = [NSMutableArray arrayWithCapacity:1];
     NSMutableData *elementaryStream = [NSMutableData data];
@@ -40,3 +42,5 @@
 }
 
 @end
+
+NS_ASSUME_NONNULL_END
diff --git a/SmartDeviceLink/SDLH264Packetizer.h b/SmartDeviceLink/SDLH264Packetizer.h
index 5327022ef..8635cdd16 100644
--- a/SmartDeviceLink/SDLH264Packetizer.h
+++ b/SmartDeviceLink/SDLH264Packetizer.h
@@ -8,6 +8,8 @@
 
 #import <Foundation/Foundation.h>
 
+NS_ASSUME_NONNULL_BEGIN
+
 @protocol SDLH264Packetizer
 
 /**
@@ -22,6 +24,8 @@
  *       All NAL units that belongs to a frame should be included in
  *       nalUnits array.
  */
-- (NSArray *)createPackets:(NSArray *)nalUnits pts:(double)pts;
+- (nullable NSArray *)createPackets:(NSArray *)nalUnits pts:(double)pts;
 
 @end
+
+NS_ASSUME_NONNULL_END
diff --git a/SmartDeviceLink/SDLRTPH264Packetizer.h b/SmartDeviceLink/SDLRTPH264Packetizer.h
index c5a76bc3c..b851e95a9 100644
--- a/SmartDeviceLink/SDLRTPH264Packetizer.h
+++ b/SmartDeviceLink/SDLRTPH264Packetizer.h
@@ -9,6 +9,8 @@
 #import <Foundation/Foundation.h>
 #import "SDLH264Packetizer.h"
 
+NS_ASSUME_NONNULL_BEGIN
+
 @interface SDLRTPH264Packetizer : NSObject <SDLH264Packetizer>
 
 /**
@@ -42,6 +44,8 @@
  *       All NAL units that belongs to a frame should be included in
  *       nalUnits array.
  */
-- (NSArray *)createPackets:(NSArray *)nalUnits pts:(double)pts;
+- (nullable NSArray *)createPackets:(NSArray *)nalUnits pts:(double)pts;
 
 @end
+
+NS_ASSUME_NONNULL_END
diff --git a/SmartDeviceLink/SDLRTPH264Packetizer.m b/SmartDeviceLink/SDLRTPH264Packetizer.m
index 31934c4fa..ca44b9207 100644
--- a/SmartDeviceLink/SDLRTPH264Packetizer.m
+++ b/SmartDeviceLink/SDLRTPH264Packetizer.m
@@ -42,6 +42,8 @@ static inline void writeLongInNBO(UInt8 *p, UInt32 value) {
     p[3] = value & 0xFF;
 }
 
+NS_ASSUME_NONNULL_BEGIN
+
 @interface SDLRTPH264Packetizer () <SDLH264Packetizer>
 @property (assign, nonatomic) UInt32 initialTimestamp;
 @property (assign, nonatomic) UInt16 sequenceNum;
@@ -69,7 +71,7 @@ static inline void writeLongInNBO(UInt8 *p, UInt32 value) {
     }
 }
 
-- (NSArray *)createPackets:(NSArray *)nalUnits pts:(double)pts {
+- (nullable NSArray *)createPackets:(NSArray *)nalUnits pts:(double)pts {
     NSMutableArray *rtpFrames = [NSMutableArray array];
     NSUInteger nalUnitsCount = [nalUnits count];
 
@@ -181,3 +183,5 @@ static inline void writeLongInNBO(UInt8 *p, UInt32 value) {
 }
 
 @end
+
+NS_ASSUME_NONNULL_END