Encoding control method and apparatus, and decoding control method and apparatus

A decoding control method, comprising:

• obtaining a current to-be-decoded node in a target queue, wherein the target queue comprises nodes whose corresponding space blocks are occupied in a constructed tree structure;
• obtaining a first mode identifier of the current to-be-decoded node, wherein the first mode identifier is used to indicate whether to decode geometric single point mode identifiers for a part of nodes that meet a priori condition of a single point decoding mode, wherein a geometric single point mode identifier is used to indicate whether to enable single point decoding;
• and
• in a case that the first mode identifier of the current to-be-decoded node is a first identifier, if nodes that have been decoded meet a first condition, directly performing octree decoding on the current to-be-decoded node, wherein the first identifier is used to indicate to decode the geometric single point mode identifiers for the part of nodes that meet the priori condition of the single point decoding mode;
• wherein nodes in the constructed tree structure are decoded in a given order, and the first condition comprises that:
• a number of nodes that have been performed octree decoding and whose corresponding first mode identifiers are first identifiers is less than a first threshold.

A decoding control apparatus, comprising a processor, a memory, and a program or an instruction stored in the memory and executable on the processor, wherein the program or the instruction, when executed by the processor, causes the decoding control apparatus to perform:

• obtaining a current to-be-decoded node in a target queue, wherein the target queue comprises nodes whose corresponding space blocks are occupied in a constructed tree structure;
• obtaining a first mode identifier of the current to-be-decoded node, wherein the first mode identifier is used to indicate whether to decode geometric single point mode identifiers for a part of nodes that meet a priori condition of a single point decoding mode, wherein a geometric single point mode identifier is used to indicate whether to enable single point decoding;
• and
• in a case that the first mode identifier of the current to-be-decoded node is a first identifier, if nodes that have been decoded meet a first condition, directly performing octree decoding on the current to-be-decoded node, wherein the first identifier is used to indicate to decode the geometric single point mode identifiers for the part of nodes that meet the priori condition of the single point decoding mode;
• wherein nodes in the constructed tree structure are decoded in a given order, and the first condition comprises that:
• a number of nodes that have been performed octree decoding and whose corresponding first mode identifiers are first identifiers is less than a first threshold.