Method and apparatus for redirection of video data

A method of processing video data for transmission to a remote system, the method comprising:

• obtaining a slice of video data output from a video graphics controller;
• calculating at least one value correlative to the slice of video data;
• allocating a network buffer;
• if the calculated value for any portion of the slice differs from a value for a previously obtained corresponding portion, updating a table associated with an image related to a remote system with the calculated value, and processing the portion of the slice to create a data portion of a network packet in the network buffer;
• and
• providing a header portion of the network packet to the network buffer.

A computer comprising:

• at least one central processing unit;
• main memory accessible by the at least one central processing unit;
• a video graphics controller configured to receive video data from the at least one central processing unit and to generate a video data output;
• a remote management controller coupled to receive the video data output from the video graphics controller, the remote management controller comprising a video redirection device and a processor,
• the video redirection device being configured to:
• obtain a slice of video data output from a video graphics controller,
• calculate at least one value correlative to the slice of video data,
• if the calculated value for any portion of the slice differs from a value for a previously obtained corresponding portion, update a table associated with an image related to a remote system with the calculated value, and process the portion of the slice to create a data portion of a network packet in a network buffer;
• and
• the processor being configured to:
• allocate the network buffer;
• and
• provide a header portion of the network packet to the network buffer.