Systems and methods for reference offset signaling in video coding

A method of deriving prediction sample values for encoding data, the method comprising:

• encoding a reference wraparound offset syntax specifying an offset used for computing a horizontal wrap-around position;
• deriving a luma location based on a product of a value of the reference wraparound offset syntax and a minimum coding block size;
• setting an offset variable equal to a value obtained by dividing the product of the value of the reference wraparound offset syntax and the minimum coding block size by a width value, wherein the width value is specified based on a chroma format;
• deriving a chroma location by using the offset variable;
• and
• deriving a predicted luma sample value by using the luma location.

A device for deriving prediction sample values for decoding video data, the device comprising:

• one or more processors;
• and
• at least one storage device coupled to the one or more processors and storing computer-executable instructions which, when executed by the one or more processors, cause the device to:
• decode a reference wraparound offset syntax specifying an offset used for computing a horizontal wrap-around position;
• derive a luma location based on a product of a value of the reference wraparound offset syntax and a minimum coding block size;
• set an offset variable equal to a value obtained by dividing the product of the value of the reference wraparound offset syntax and the minimum coding block size by a width value, wherein the width value is specified based on a chroma format;
• derive a chroma location by using the offset variable;
• and
• derive a predicted luma sample value by using the luma location.