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small simplification on reverse lpf implementation

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borti4938 2018-02-22 06:44:29 +01:00
parent 5249d313d8
commit 500a22f316
1 changed files with 2 additions and 4 deletions
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6
rtl/scanconverter.v
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@ -255,14 +255,12 @@ function [7:0] apply_reverse_lpf;
input [7:0] data;
input [7:0] data_prev;
input signed [14:0] diff;
reg signed [12:0] data_prev_x;
reg signed [10:0] result;
begin
data_prev_x = (data_prev << 4);
result = (data_prev_x - diff) >>> 4;
result = ({3'b000,data_prev} + ~diff[14:4] + ~|diff[3:0]);
if (enable)
apply_reverse_lpf = (result < 0) ? 8'h00 : (result > 255) ? 8'hFF : result;
apply_reverse_lpf = result[10] ? 8'h00 : |result[9:8] ? 8'hFF : result[7:0];
else
apply_reverse_lpf = data;
end