Signaling of picture header parameters

An apparatus for coding or encoding video data, the apparatus comprising:

• at least one memory configured to store computer program code;
• and
• at least one processor configured to access the at least one memory and operate according to the computer program code, the computer program code comprising:
• indicating code configured to cause the at least one processor to indicate, with picture header a syntax element, and for all slices included in a corresponding coded picture, whether the slices are B, P, and/or I type slices, the syntax element being coded using an unsigned integer, the picture header syntax element indicating whether syntax elements related to intra slice are to be coded or inter slice are to be coded, and
• encoding or decoding code configured to cause the at least one processor to encode or decode the video data based on types of slices indicated via the syntax element,
• wherein the indicating code is configured to cause the at least one processor to indicate the types of slices such that, for the coded picture, based on a value of the picture header syntax element being a first value, only related intra-prediction syntax elements are coded, and based on the value of the picture header syntax element being a second value, only related inter-prediction syntax elements are coded, and
• wherein the indicating code is further configured to cause the at least one processor to indicate the types of slices such that, based on the picture header syntax element being the first value, no inter-prediction syntax elements are coded, and wherein based the picture header syntax element being the second value, no intra-prediction syntax are coded.

A non-transitory computer-readable storage medium storing instructions that cause at least one processor to:

• indicate, with a picture header syntax element, and for all slices included in a corresponding coded picture, whether the slices are B, P, and/or I type slices, the syntax element being coded using an unsigned integer, the picture header syntax element indicating whether syntax elements related to intra slice are to be coded or inter slice are to be coded, and
• encode or decode video data based on types of slices indicated via the syntax element,
• wherein the instructions, when executed by the at least one processor, cause the at least one processor, based on a value of the picture header syntax element being a first value, code only related intra-prediction syntax elements, and based on the value of the picture header syntax element being a second value, code only related inter-prediction syntax elements, and
• wherein the instructions, when executed by the at least one processor, cause the at least one processor, based on the picture header syntax element being the first value, code no inter-prediction syntax elements, and wherein based the picture header syntax element being the second value, code no intra-prediction syntax.