Overriding syntax elements in frame parameter set and meshpatches in v-dmc

A method for decoding a bitstream of encoded mesh data, the method comprising:

• determining, based on a value of a first syntax element, that first transform parameters and first quantization parameters in a first syntax structure are overridden;
• in response to determining that the first transform parameters are overridden, inferring a value of a second syntax element to be equal to a first value, wherein the first value for the second syntax element indicates that second transform parameters are present in the bitstream of encoded mesh data and a second value for the second syntax element indicates that the second transform parameters are not present in the bitstream of encoded mesh data;
• in response to the value of the second syntax element being equal to the first value, determining the second transform parameters from a second syntax structure;
• in response to determining that the first quantization parameters are overridden, inferring a value of a third syntax element to be equal to a first value, wherein the first value for the third syntax element indicates that second quantization parameters are present in the bitstream of encoded mesh data and a second value for the third syntax element indicates that the second quantization parameter is not present in the bitstream of encoded mesh data;
• in response to the value of the third syntax element being equal to the first value, determining second quantization parameters from a third syntax structure;
• and
• decoding the encoded mesh data based on the second transform parameters and the second quantization parameters.

A computer-readable storage medium storing instructions that when executed by one or more processors cause the one or more processors to:

• determine, based on a value of a first syntax element, that first transform parameters and first quantization parameters in a first syntax structure are overridden;
• in response to determining that the first transform parameters are overridden, infer a value of a second syntax element to be equal to a first value, wherein the first value for the second syntax element indicates that second transform parameters are present in a bitstream of encoded mesh data and a second value for the second syntax element indicates that the second transform parameters are not present in the bitstream of encoded mesh data;
• in response to the value of the second syntax element being equal to the first value, determine the second transform parameters from the second syntax structure;
• in response to determining that the first quantization parameters are overridden, infer a value of a third syntax element to be equal to a first value, wherein the first value for the third syntax element indicates that second quantization parameters are present in the bitstream of encoded mesh data and a second value for the third syntax element indicates that the second quantization parameter is not present in the bitstream of encoded mesh data;
• in response to the value of the third syntax element being equal to the first value, determine second quantization parameters from a third syntax structure;
• and
• decode the encoded mesh data based on the second transform parameters and the second quantization parameters.