Adding in check for nullable properties of video encoder callback

1 files changed, 5 insertions, 1 deletions

diff --git a/SmartDeviceLink/SDLStreamingMediaManager.m b/SmartDeviceLink/SDLStreamingMediaManager.m
index d05daa93e..ab7cde8c5 100644
--- a/SmartDeviceLink/SDLStreamingMediaManager.m
+++ b/SmartDeviceLink/SDLStreamingMediaManager.m
@@ -384,13 +384,17 @@ NS_ASSUME_NONNULL_BEGIN
 
 #pragma mark Callbacks
 
-void sdl_videoEncoderOutputCallback(void *outputCallbackRefCon, void *sourceFrameRefCon, OSStatus status, VTEncodeInfoFlags infoFlags, CMSampleBufferRef sampleBuffer) {
+void sdl_videoEncoderOutputCallback(void * CM_NULLABLE outputCallbackRefCon, void * CM_NULLABLE sourceFrameRefCon, OSStatus status, VTEncodeInfoFlags infoFlags, CM_NULLABLE CMSampleBufferRef sampleBuffer) {
     // If there was an error in the encoding, drop the frame
     if (status != noErr) {
         [SDLDebugTool logFormat:@"Error encoding video, err=%lld", (int64_t)status];
         return;
     }
 
+    if (outputCallbackRefCon == NULL || sourceFrameRefCon == NULL || sampleBuffer == NULL) {
+        return;
+    }
+    
     SDLStreamingMediaManager *mediaManager = (__bridge SDLStreamingMediaManager *)sourceFrameRefCon;
     NSData *elementaryStreamData = [mediaManager.class sdl_encodeElementaryStreamWithSampleBuffer:sampleBuffer];