Device-Cloud Collaboration System, Encoding and Decoding Method, and Electronic Device

An encoding method applied to a server, wherein the method comprises:

• performing a first-phase operation of graphics processing, to generate original data of an intermediate result of graphics processing of a current frame;
• determining first difference data of the intermediate result based on the original data of the intermediate result and simulation data corresponding to the intermediate result;
• encoding the first difference data of the intermediate result, to obtain a bitstream;
• and
• sending the bitstream.

A decoding method applied to a terminal device, wherein the method comprises:

• receiving a bitstream, wherein the bitstream comprises encoded data of first difference data of an intermediate result corresponding to a current frame, the first difference data indicates a difference between original data of the intermediate result and simulation data corresponding to the intermediate result, and the original data of the intermediate result is generated by a server by performing a first-phase operation of graphics processing;
• decoding the bitstream, to obtain second difference data of the intermediate result corresponding to the current frame;
• generating reconstructed data of the intermediate result based on the second difference data of the intermediate result and the simulation data corresponding to the intermediate result;
• and
• performing a second-phase operation of graphics processing based on the reconstructed data of the intermediate result, to generate digital content for displaying.

A device-cloud collaboration system, wherein the device-cloud collaboration system comprises a server and a terminal device, wherein

• the server is configured to:
• perform a first-phase operation of graphics processing, to generate original data of an intermediate result of graphics processing of a current frame;
• determine a reference frame of the current frame based on simulation data corresponding to the intermediate result;
• determine residual data of the intermediate result based on the reference frame and the original data of the intermediate result;
• encode the residual data of the intermediate result, to obtain a bitstream;
• and send the bitstream to the terminal device;
• and
• the terminal device is configured to:
• receive the bitstream;
• parse the bitstream, to obtain the residual data of the intermediate result corresponding to the current frame;
• determine the reference frame of the current frame based on the simulation data corresponding to the intermediate result;
• perform reconstruction based on the reference frame and the residual data of the intermediate result, to obtain reconstructed data of the intermediate result;
• and perform a second-phase operation of graphics processing based on the reconstructed data of the intermediate result, to generate digital content for displaying.

An encoding method applied to a server, wherein the method comprises:

• performing a first-phase operation of graphics processing, to generate original data of an intermediate result of graphics processing of a current frame;
• determining a reference frame of the current frame based on simulation data corresponding to the intermediate result;
• determining residual data of the intermediate result based on the reference frame and original data of the intermediate result;
• encoding the residual data of the intermediate result, to obtain a bitstream;
• and
• sending the bitstream.

A decoding method applied to a terminal device, wherein the method comprises:

• receiving a bitstream, wherein the bitstream comprises encoded data of residual data of an intermediate result corresponding to a current frame, and the residual data of the intermediate result indicates a difference between original data of the intermediate result and a reference frame corresponding to the current frame;
• parsing the bitstream, to obtain the residual data of the intermediate result corresponding to the current frame;
• determining the reference frame of the current frame based on simulation data corresponding to the intermediate result;
• performing reconstruction based on the reference frame and the residual data of the intermediate result, to obtain reconstructed data of the intermediate result;
• and
• performing a second-phase operation of graphics processing based on the reconstructed data of the intermediate result, to generate digital content for displaying, wherein the second-phase operation is a part of a procedure of graphics processing.