From f3f01c1c51f3119cb19befd8e4066c7f3ca16626 Mon Sep 17 00:00:00 2001
From: SikongJueluo <qq1822250894@163.com>
Date: Sat, 11 May 2024 17:43:26 +0800
Subject: [PATCH] update image processor to merge 3 chanels color into a RGB
 image

---
 IM_PROCESS/chanels_to_RGB.v     | 36 +++++++++++++++++++++++++++++++++
 IM_PROCESS/scale_down_nearest.v | 20 ++++++++++++++++++
 RAM/RGB_to_RAM.v                |  5 +++++
 isp.v                           |  5 +++--
 4 files changed, 64 insertions(+), 2 deletions(-)
 create mode 100644 IM_PROCESS/chanels_to_RGB.v
 create mode 100644 IM_PROCESS/scale_down_nearest.v
 create mode 100644 RAM/RGB_to_RAM.v

diff --git a/IM_PROCESS/chanels_to_RGB.v b/IM_PROCESS/chanels_to_RGB.v
new file mode 100644
index 0000000..63f87cf
--- /dev/null
+++ b/IM_PROCESS/chanels_to_RGB.v
@@ -0,0 +1,36 @@
+`timescale 1ns/1ps
+
+// 三通道图像合成一个RGB图像
+module chanels_to_RGB #(
+    parameter IN_DEPTH = 12,        // 输入图像的色深
+    parameter OUT_DEPTH = 8         // 输出图像的色深
+) (
+    input clk,
+    input reset,
+
+    input in_en,
+    input [IN_DEPTH - 1:0] data_in [2:0], // 0:R 1:G 2:B
+
+    output reg out_en,
+    output reg [3 * OUT_DEPTH - 1:0] data_out
+);
+    reg [31:0] data_cal [2:0]; // 用于保存运算结果，防止溢出
+
+    always @(posedge clk or posedge reset) begin
+        if (reset) begin
+            // 初始化
+            out_en <= 0;
+            data_out <= 0;
+        end
+        else begin
+            if (in_en) begin
+                data_cal[0] <= data_in[0] * OUT_DEPTH / IN_DEPTH;
+                data_cal[1] <= data_in[1] * OUT_DEPTH / IN_DEPTH;
+                data_cal[2] <= data_in[2] * OUT_DEPTH / IN_DEPTH;
+
+                data_out <= {data_cal[0][OUT_DEPTH - 1:0], data_cal[1][OUT_DEPTH - 1:0],data_cal[2][OUT_DEPTH - 1:0]};
+            end
+            out_en <= in_en;
+        end
+    end
+endmodule
\ No newline at end of file
diff --git a/IM_PROCESS/scale_down_nearest.v b/IM_PROCESS/scale_down_nearest.v
new file mode 100644
index 0000000..3d137a9
--- /dev/null
+++ b/IM_PROCESS/scale_down_nearest.v
@@ -0,0 +1,20 @@
+module scale_down_nearest #(
+    parameter IN_WIDTH = 1920,
+    parameter IN_HEIGHT = 1080,
+    parameter OUT_WIDTH = 640,
+    parameter OUT_HEIGHT = 480,
+    parameter COLOR_DEPTH = 8
+) (
+    input clk,
+    input reset,
+
+    input in_en,
+    input [3 * COLOR_DEPTH - 1:0] data_in,
+    
+    output out_en,
+    output [3 * COLOR_DEPTH - 1:0] data_out
+);
+
+    localparam 
+    
+endmodule
\ No newline at end of file
diff --git a/RAM/RGB_to_RAM.v b/RAM/RGB_to_RAM.v
new file mode 100644
index 0000000..1894892
--- /dev/null
+++ b/RAM/RGB_to_RAM.v
@@ -0,0 +1,5 @@
+module RGB_to_RAM (
+    ports
+);
+    
+endmodule
\ No newline at end of file
diff --git a/isp.v b/isp.v
index 718671f..0d697ef 100644
--- a/isp.v
+++ b/isp.v
@@ -3,8 +3,9 @@
 module isp #(
     parameter IN_WIDTH = 1936,
     parameter IN_HEIGHT = 1088,
-    // parameter OUT_WIDTH = 1936 - 2,
-    // parameter OUT_HEIGHT = 1088 - 2,
+    parameter OUT_WIDTH = 640,
+    parameter OUT_HEIGHT = 480,
+    parameter COLOR_DEPTH = 8,
     parameter RAW_TYPE = 3          // 0:grbg 1:rggb 2:bggr 3:gbrg
 ) (
     // 基本信号