Video and Vision Processing Suite Intel® FPGA IP User Guide

ID 683329
Date 9/30/2024
Public
Document Table of Contents
1. About the Video and Vision Processing Suite 2. Getting Started with the Video and Vision Processing IPs 3. Video and Vision Processing IPs Functional Description 4. Video and Vision Processing IP Interfaces 5. Video and Vision Processing IP Registers 6. Video and Vision Processing IPs Software Programming Model 7. Protocol Converter Intel® FPGA IP 8. 1D LUT Intel® FPGA IP 9. 3D LUT Intel® FPGA IP 10. Adaptive Noise Reduction Intel® FPGA IP 11. Advanced Test Pattern Generator Intel® FPGA IP 12. AXI-Stream Broadcaster Intel® FPGA IP 13. Bits per Color Sample Adapter Intel® FPGA IP 14. Black Level Correction Intel® FPGA IP 15. Black Level Statistics Intel® FPGA IP 16. Chroma Key Intel® FPGA IP 17. Chroma Resampler Intel® FPGA IP 18. Clipper Intel® FPGA IP 19. Clocked Video Input Intel® FPGA IP 20. Clocked Video to Full-Raster Converter Intel® FPGA IP 21. Clocked Video Output Intel® FPGA IP 22. Color Plane Manager Intel® FPGA IP 23. Color Space Converter Intel® FPGA IP 24. Defective Pixel Correction Intel® FPGA IP 25. Deinterlacer Intel® FPGA IP 26. Demosaic Intel® FPGA IP 27. FIR Filter Intel® FPGA IP 28. Frame Cleaner Intel® FPGA IP 29. Full-Raster to Clocked Video Converter Intel® FPGA IP 30. Full-Raster to Streaming Converter Intel® FPGA IP 31. Genlock Controller Intel® FPGA IP 32. Generic Crosspoint Intel® FPGA IP 33. Genlock Signal Router Intel® FPGA IP 34. Guard Bands Intel® FPGA IP 35. Histogram Statistics Intel® FPGA IP 36. Interlacer Intel® FPGA IP 37. Mixer Intel® FPGA IP 38. Pixels in Parallel Converter Intel® FPGA IP 39. Scaler Intel® FPGA IP 40. Stream Cleaner Intel® FPGA IP 41. Switch Intel® FPGA IP 42. Text Box Intel® FPGA IP 43. Tone Mapping Operator Intel® FPGA IP 44. Test Pattern Generator Intel® FPGA IP 45. Unsharp Mask Intel® FPGA IP 46. Video and Vision Monitor Intel FPGA IP 47. Video Frame Buffer Intel® FPGA IP 48. Video Frame Reader Intel FPGA IP 49. Video Frame Writer Intel FPGA IP 50. Video Streaming FIFO Intel® FPGA IP 51. Video Timing Generator Intel® FPGA IP 52. Vignette Correction Intel® FPGA IP 53. Warp Intel® FPGA IP 54. White Balance Correction Intel® FPGA IP 55. White Balance Statistics Intel® FPGA IP 56. Design Security 57. Document Revision History for Video and Vision Processing Suite User Guide

39.3.1.1. Updating Scaler IP Runtime Coefficients

If you select polyphase and turn on runtime coefficient updates, you can edit the values in the horizontal and vertical scaling coefficient memories at any time via the Avalon memory-mapped agent interface.

To minimize the implementation cost of the coefficient memories, you cannot directly access the value of each coefficient through a single read or write to the register map. You must write the values for the coefficients in a given phase (vertical or horizontal) to a set of addresses in the register map. Then declare through separate addresses which phase and which bank the IP writes the coefficients to.

  1. Write the values of the coefficients for one phase to the RT_COEFF_LOAD_TAP_Xregisters (0 <= X < 64, addresses 0x020C to 0x0308). The IP has 64 addresses into which you may write new coefficients. If the coefficient phase you are updating only has coefficients for N taps (where N < 64), you need only write values to the first N addresses in this range.
  2. Write the index of the bank to which the IP should write this phase of coefficients to the RT_COEFF_LOAD_BANK_SELECT register (address 0x0200).
  3. Write the index of the phase to which the IP should write the coefficients to the RT_COEFF_LOAD_PHASE_SELECT register (address 0x0204).
  4. Write to the RT_COEFF_LOAD_COMMIT register (address 0x208) to commit the new coefficients to the specified phase in the specified bank. Write 1 to this register if it is a horizontal scaling filter coefficient phase, and 0 if it is a vertical scaling filter coefficient phase.

You must repeat this process for every phase in every bank that you want to update. Unlike updates to settings registers (such as the output field width), coefficient updates take immediate effect. The IP does not hold them until a frame boundary. To avoid the IP updating coefficients in the middle of a frame, Intel recommends using at least two banks of coefficients. This way the software controlling the system can make updates to the coefficients in one bank, while the scaler reads coefficients for processing from the other bank. When the coefficient updates are complete, the software can swap the coefficient read bank to the newly updated bank by updating the value in the H_BANK or V_BANK address in the register map. These registers are standard settings registers, so the update to the coefficient read bank only takes effect at a frame boundary.