String matching with a single value from reference locations

1. A method of video coding, executable by a processor, comprising:

receiving video data including one or more reference locations;

updating the one or more reference locations in a history list associated with a current coding tree unit (CTU) in the video data based on a relative offset of a reference location in a reference sample memory to a top-left corner of the current CTU for a single value string mode; and

decoding the video data based on the updated reference locations.

2. The method of claim 1 , wherein a size of the reference sample memory is same as a size of the current CTU.

3. The method of claim 2 , wherein reference samples include reconstructed samples in a left CTU of the current CTU.

4. The method of claim 2 , wherein the relative offset of the reference location comprises an x-coordinate and a y-coordinate, the x-coordinate of the relative offset is based on a x-coordinate of the top-left corner and a size of the current CTU.

5. The method of claim 4 , wherein the y-coordinate of the relative offset is based on a y-coordinate of the top-left corner and a size of the current CTU.

6. The method of claim 1 , wherein a size of the reference sample memory is larger than the size of the current CTU.

7. The method of claim 6 , wherein reference samples include reconstructed samples in one or more left CTUs to the current CTU.

8. The method of claim 6 , wherein the relative offset of the reference location comprises an x-coordinate and a y-coordinate, the x-coordinate of the relative offset is based on an absolute value of an x-coordinate of the top-left corner.

9. A computer system for video coding, the computer system comprising:

one or more computer-readable non-transitory storage media configured to store computer program code; and

one or more computer processors configured to access said computer program code and operate as instructed by said computer program code, said computer program code including:

receiving code configured to cause the one or more computer processors to receive video data including one or more reference locations;

updating code configured to cause the one or more computer processors to update the one or more reference locations in a history list associated with a current coding tree unit (CTU) in the video data based on a relative offset of a reference location in a reference sample memory to a top-left corner of the current CTU for a single value string mode; and

decoding code configured to cause the one or more computer processors to decode the video data based on the updated reference locations.

10. The computer system of claim 9 , wherein a size of the reference sample memory is same as a size of the current CTU.

11. The computer system of claim 10 , wherein reference samples include reconstructed samples in a left CTU of the current CTU.

12. The computer system of claim 10 , wherein the relative offset of the reference location comprises an x-coordinate and a y-coordinate, the x-coordinate of the relative offset is based on a x-coordinate of the top-left corner and a size of the current CTU.

13. The computer system of claim 12 , wherein the y-coordinate of the relative offset is based on a y-coordinate of the top-left corner and a size of the current CTU.

14. The computer system of claim 9 , wherein a size of the reference sample memory is larger than the size of the current CTU.

15. The computer system of claim 14 , wherein reference samples include reconstructed samples in one or more left CTUs to the current CTU.

16. The computer system of claim 14 , the relative offset of the reference location comprises an x-coordinate and a y-coordinate, the x-coordinate of the relative offset is based on an absolute value of an x-coordinate of the top-left corner.

17. A non-transitory computer readable medium having stored thereon a computer program for video coding, the computer program configured to cause one or more computer processors to:

receive video data including one or more reference locations;

update the one or more reference locations in a history list associated with a current coding tree unit (CTU) in the video data based on a relative offset of a reference location in a reference sample memory to a top-left corner of the current CTU for a single value string mode; and

decode the video data based on the updated reference locations.

18. The computer system of claim 17 , wherein a size of the reference sample memory is same as a size of the current CTU.

19. The computer system of claim 18 , wherein reference samples include reconstructed samples in a left CTU of the current CTU.

20. The computer system of claim 17 , wherein a size of the reference sample memory is larger than the size of the current CTU.