just make a little part of saturation correction

Color/SaturationCorrection.v

@@ -0,0 +1,97 @@
+`timescale 1ns / 1ps
+
+module SaturationCorrection #(
+    parameter reg [4:0] COLOR_DEPTH = 8
+) (
+    input wire clk,
+    input wire reset,
+
+    input wire in_en,
+    input wire [COLOR_DEPTH - 1 : 0] in_data[3],
+    output wire out_ready,
+    output wire out_receive,
+
+    output reg out_en,
+    output reg [COLOR_DEPTH - 1 : 0] out_data[3],
+    input wire in_ready,
+    input wire in_receive,
+
+    input wire enable,
+    input wire [8:0] saturation_inc
+);
+  reg [2:0] state, nextState;
+  localparam reg [2:0] READ_DATA = 0;
+  localparam reg [2:0] CALC_DATA = 1;
+  localparam reg [2:0] SEND_DATA = 2;
+
+  reg [15:0] data_cal[3];
+
+  always @(posedge clk or posedge reset) begin
+    if (reset) state <= READ_DATA;
+    else state <= nextState;
+  end
+
+  always @(*) begin
+    case (state)
+      READ_DATA: nextState = in_en ? CALC_DATA : READ_DATA;
+      CALC_DATA: nextState = SEND_DATA;
+      SEND_DATA: nextState = in_receive ? READ_DATA : SEND_DATA;
+      default:   nextState = READ_DATA;
+    endcase
+  end
+
+  assign out_ready = (!in_en && state == READ_DATA) ? 1 : 0;
+  assign out_receive = (in_en && state == READ_DATA) ? 1 : 0;
+
+  assign max = data_cal[0] > data_cal[1]?
+               (data_cal[0] > data_cal[2] ? data_cal[0] : data_cal[2]):
+               (data_cal[1] > data_cal[2] ? data_cal[1] : data_cal[2]);
+  assign min = data_cal[0] < data_cal[1]?
+               (data_cal[0] < data_cal[2] ? data_cal[0] : data_cal[2]):
+               (data_cal[1] < data_cal[2] ? data_cal[1] : data_cal[2]);
+  assign delta = max - min;
+  assign value = max + min;
+  assign light = value >> 1;
+  assign saturation = (delta << 8) / max;
+
+
+
+
+  always @(posedge clk or posedge reset) begin
+    if (reset) begin
+      out_en <= 0;
+      out_data[0] <= 0;
+      out_data[1] <= 0;
+      out_data[2] <= 0;
+
+      data_cal[0] <= 0;
+      data_cal[1] <= 0;
+      data_cal[2] <= 0;
+    end else begin
+      case (state)
+        READ_DATA: begin
+          if (in_en) begin
+
+          end
+        end
+
+        CALC_DATA: begin
+          if (enable) begin
+
+          end
+        end
+
+        SEND_DATA: begin
+          if (in_ready) begin
+            out_en <= 1;
+
+          end else out_en <= 0;
+        end
+
+        default: ;
+      endcase
+    end
+  end
+
+
+endmodule