Programming system and method for a video network
View Patent ↗In a signal processing system, a programming system and method for a video network are provided. An event may trigger an RDMA controller to execute current instructions in a register update list. The triggering event may be a start-of-field signal from a live source or an end-of-frame signal. The current instructions may be used to modify the mode of operation of at least one of the network elements in the video network. The modification to the mode of operation may depend on whether the current video field is top field originated or bottom field originated. An interrupt may be used to initiate an interrupt handler that generates at least one new instruction and that updates the new instructions in the register update list. When a trigger occurs prior to an update of the register update list, the RDMA controller may execute the current instructions in the register update list.
1. A method for video signal processing, the method comprising:
in an integrated circuit comprising a plurality of network elements:
triggering the execution of at least one current instruction from a register update list;
modifying a mode of operation of at least one of said plurality of network elements based on said at least one current instruction, wherein said plurality of network elements are operable to perform one or more video processing functions;
updating at least one new instruction in said register update list;
generating an interrupt to initiate generation of said at least one new instruction;
handling the interrupt;
updating said at least one new instruction in said register update list when an interrupt handler has completed; and
determining whether a hardware triggering event has occurred before the interrupt handler has completed the updating, and responsive to determining the hardware triggering event has occurred, executing the at least one current instruction, otherwise responsive to determining the hardware triggering event has not occurred, continuing the updating.
2. The method according to claim 1 , comprising triggering the execution of said at least one current instruction when a start-of-field signal is received from a live input source.
3. The method according to claim 1 , comprising triggering the execution of said at least one current instruction when an end-of-frame signal is received from a last of said at least one of said plurality of network elements.
4. The method according to claim 1 , comprising triggering the execution of said at least one current instruction based on whether a video field is a top field originated video field or a bottom field originated video field.
5. The method according to claim 1 , comprising generating said at least one new instruction to be updated in said register update list.
6. A machine-readable storage having stored thereon, a computer program having at least one code section for video signal processing, the at least one code section being executable by a machine for causing the machine to perform steps comprising:
in an integrated circuit comprising a plurality of network elements:
triggering the execution of at least one current instruction from a register update list;
modifying a mode of operation of at least one of said plurality of network elements based on said at least one current instruction, wherein said plurality of network elements are operable to perform one or more video processing functions;
updating at least one new instruction in said register update list;
generating an interrupt to initiate generation of said at least one new instruction;
handling the interrupt;
updating said at least one new instruction in said register update list when an interrupt handler has completed; and
determining whether a hardware triggering event has occurred before the interrupt handler has completed the updating, and responsive to determining the hardware triggering event has occurred, executing the at least one current instruction, otherwise responsive to determining the hardware triggering event has not occurred, continuing the updating.
7. The machine-readable storage according to claim 6 , wherein said at least one code section comprises code for triggering the execution of said at least one current instruction when a start-of-field signal is received from a live input source.
8. The machine-readable storage according to claim 6 , wherein said at least one code section comprises code for triggering the execution of said at least one current instruction when an end-of-frame signal is received from a last of said at least one of said plurality of network elements.
9. The machine-readable storage according to claim 6 , wherein said at least one code section comprises code for triggering the execution of said at least one current instruction based on whether a video field is a top field originated video field or a bottom field originated video field.
10. The machine-readable storage according to claim 6 , wherein said at least one code section comprises code for generating said at least one new instruction to be updated in said register update list.
11. A system for video signal processing, the system comprising:
in a single integrated circuit comprising a plurality of network elements that are selectively interconnected, said plurality of network elements comprising an RDMA controller and at least one processor, said plurality of network elements being operable to perform one or more video processing functions, wherein at least one of said plurality of network elements is configured to trigger execution of at least one current instruction from a register update list;
wherein said RDMA controller is configured to modify a mode of operation of at least one of said plurality of network elements based on said at least one current instruction and generate an interrupt to initiate generation of said at least one new instruction; and
wherein said at least one processor is configured to update said at least one new instruction in said register update list, handle the interrupt, and update said at least one new instruction in said register update list when an interrupt handler of the processor has completed,
wherein the RDMA controller is further configured to determine whether a hardware triggering event has occurred before the interrupt handler has completed the updating, and responsive to determining the hardware triggering event has occurred, execute the at least one current instruction, otherwise responsive to determining the hardware triggering event has not occurred, allow continuing by the processor of the updating.
12. The system according to claim 11 , wherein said at least one of said plurality of network elements triggers the execution of said at least one current instruction when a start-of-field signal is received from a live input source.
13. The system according to claim 11 , wherein said at least one of said plurality of network elements triggers the execution of said at least one current instruction when an end-of-frame signal is received from a last of said at least one of said plurality of network elements.
14. The system according to claim 11 , wherein said at least one of said plurality of network elements triggers the execution of said at least one current instruction based on whether a video field is a top field originated video field or a bottom field originated video field.
15. The system according to claim 11 , wherein said at least one processor generates said at least one new instruction to be updated in said register update list.