| 摘要 |
A data processing apparatus is provided for performing video decoding operations on blocks of video data, the data processing apparatus comprising: a programmable inverse transform unit configured to perform an inverse transform operation on a set of input values in response to a sequence of instructions, the programmable inverse transform unit comprising a first execution path and a second execution path arranged to perform data operations to implement the inverse transform operation, wherein the data operations performed by the first and second execution path are configured in dependence on the sequence of instructions, wherein the programmable inverse transform unit is configured to operate in a first mode in which each instruction in the sequence of instructions is interpreted using a first instruction length and causes the first execution path and the second execution path to be configured independently of each other, and the programmable inverse transform unit is configured to operate in a second mode in which each instruction in the sequence of instructions is interpreted using a second instruction length, the second instruction length being shorter than the first instruction length, and causes the second execution path to be configured in dependence on a configuration of the first execution path.
|
