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| code:fpga_map_gen5 [2026/06/11 04:22] – [FPGA basic status and controls] Igor Yefmov | code:fpga_map_gen5 [2026/06/11 08:44] (current) – [Green Screen enhancer] Igor Yefmov |
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| | ''0x0C'' (120) | 297 | 1188 | | | | ''0x0C'' (120) | 297 | 1188 | | |
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| | ==== Video pipeline setup ==== |
| | ^Name ^Address ^Access ^Bit mapping ^Notes ^ |
| | |:!: Initial scaler setup|''0x5000'0800''|R/W|''31:4'' - reserved\\ :!: ''3:2'' - scale divisor\\ :!: ''1:0'' - filter mode|The initial scaler is the first post-debayer pipeline stage. Horizontal and vertical scaling always use the same divisor, preserving the input aspect ratio.\\ \\ Scale divisor values:\\ ''0'' - 1:1 (pass-through)\\ ''1'' - 2:1 (output width and height are each half of the input)\\ ''2-3'' - reserved\\ \\ Filter mode values:\\ ''0'' - nearest (select the top-left pixel from each source region)\\ ''1'' - box average\\ ''2-3'' - reserved for future filters\\ \\ The filter mode is ignored in 1:1 pass-through mode. This register must only be changed while the video pipeline is fully stopped.| |
| | |:!: UVC scaler output geometry|''0x5000'0804''|R/W|:!: ''31:16'' - uint16_t horizontal\\ :!: ''15:0'' - uint16_t vertical|Requested UVC scaler output resolution, in pixels. The input geometry is derived internally from the output of the initial scaler and is not independently configurable.\\ \\ Setting the output geometry equal to the input geometry selects 1:1 pass-through. Initially, only downscaling is supported. The requested width and height must be non-zero and must not exceed the input geometry. Packed YCbCr 4:2:2 output requires an even horizontal resolution. This register must only be changed while UVC output is stopped.| |
| | |:!: UVC scaler control|''0x5000'0808''|R/W|''31:2'' - reserved\\ :!: ''1:0'' - filter mode|Filter mode values:\\ ''0'' - nearest\\ ''1'' - box average\\ ''2-3'' - reserved for future filters\\ \\ Horizontal and vertical sampling ratios are derived internally from the initial scaler output geometry and requested UVC output geometry. This register must only be changed while UVC output is stopped.| |
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| ===== Green Screen enhancer ===== | ===== Green Screen enhancer ===== |
