update scaler and RAM
This commit is contained in:
SikongJueluo
parent
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commit
c96e9b57b2
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@ -2,6 +2,7 @@ module demosaic2 #(
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parameter IM_WIDTH = 512, // 图像宽度
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parameter IM_HEIGHT = 256, // 图像高度
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parameter RAW_TYPE = 3 // 0:grbg 1:rggb 2:bggr 3:gbrg
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parameter DATA_SIZE = 16,
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)(
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// 基本信号
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input clk,
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@ -9,15 +10,15 @@ module demosaic2 #(
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// 数据输入信号
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input data_en,
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input [15:0] data_in [2:0], // 数据输入线，0、1、2分别表示第一、二、三行
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input [DATA_SIZE - 1:0] data_in [2:0], // 数据输入线，0、1、2分别表示第一、二、三行
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output reg data_que, // 数据请求线，高电平：请求三个数据，直到读取完才拉低
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output reg data_line, // 新一行请求数据线，高电平：请求九个数据，直到读取完才拉低
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// en: 输出数据有效信号，高电平有效
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output reg out_en,
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output reg [15:0] out_r,
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output reg [15:0] out_g,
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output reg [15:0] out_b
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output reg [DATA_SIZE - 1:0] out_r,
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output reg [DATA_SIZE - 1:0] out_g,
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output reg [DATA_SIZE - 1:0] out_b
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);
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// 常量，包括状态机
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@ -1,36 +0,0 @@
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`timescale 1ns/1ps
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// 三通道图像合成一个RGB图像
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module chanels_to_RGB #(
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parameter IN_DEPTH = 12, // 输入图像的色深
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parameter OUT_DEPTH = 8 // 输出图像的色深
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) (
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input clk,
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input reset,
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input in_en,
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input [IN_DEPTH - 1:0] data_in [2:0], // 0:R 1:G 2:B
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output reg out_en,
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output reg [3 * OUT_DEPTH - 1:0] data_out
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);
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reg [31:0] data_cal [2:0]; // 用于保存运算结果，防止溢出
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always @(posedge clk or posedge reset) begin
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if (reset) begin
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// 初始化
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out_en <= 0;
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data_out <= 0;
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end
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else begin
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if (in_en) begin
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data_cal[0] <= data_in[0] * OUT_DEPTH / IN_DEPTH;
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data_cal[1] <= data_in[1] * OUT_DEPTH / IN_DEPTH;
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data_cal[2] <= data_in[2] * OUT_DEPTH / IN_DEPTH;
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data_out <= {data_cal[0][OUT_DEPTH - 1:0], data_cal[1][OUT_DEPTH - 1:0],data_cal[2][OUT_DEPTH - 1:0]};
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end
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out_en <= in_en;
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end
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end
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endmodule
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@ -1,20 +0,0 @@
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module scale_down_nearest #(
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parameter IN_WIDTH = 1920,
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parameter IN_HEIGHT = 1080,
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parameter OUT_WIDTH = 640,
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parameter OUT_HEIGHT = 480,
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parameter COLOR_DEPTH = 8
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) (
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input clk,
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input reset,
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input in_en,
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input [3 * COLOR_DEPTH - 1:0] data_in,
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output out_en,
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output [3 * COLOR_DEPTH - 1:0] data_out
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);
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localparam
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endmodule
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@ -0,0 +1,67 @@
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`timescale 1ns/1ps
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// 三通道图像合成一个RGB图像
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module chanels_to_RGB #(
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parameter IN_DEPTH = 12, // 输入图像的色深
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parameter OUT_DEPTH = 8 // 输出图像的色深
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) (
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input clk,
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input reset,
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input in_en,
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input [IN_DEPTH - 1:0] data_in [2:0], // 0:R 1:G 2:B
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// 输出相关
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input data_que; // 数据请求
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output reg out_en,
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output reg [3 * OUT_DEPTH - 1:0] data_out
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);
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reg [31:0] data_cal [2:0]; // 用于保存运算结果，防止溢出
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reg fifo_en;
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wire [3 * OUT_DEPTH - 1:0] fifo_in; // 输入fifo中缓存
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wire fifo_empty;
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// wire fifo_alempty;
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always @(posedge clk or posedge reset) begin
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if (reset) begin
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// 初始化
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out_en <= 0;
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data_out <= 0;
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end
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else begin
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if (in_en) begin
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data_cal[0] <= data_in[0] * OUT_DEPTH / IN_DEPTH;
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data_cal[1] <= data_in[1] * OUT_DEPTH / IN_DEPTH;
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data_cal[2] <= data_in[2] * OUT_DEPTH / IN_DEPTH;
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fifo_in <= {data_cal[0][OUT_DEPTH - 1:0], data_cal[1][OUT_DEPTH - 1:0],data_cal[2][OUT_DEPTH - 1:0]};
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// data_out <= {data_cal[0][OUT_DEPTH - 1:0], data_cal[1][OUT_DEPTH - 1:0],data_cal[2][OUT_DEPTH - 1:0]};
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end
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fifo_en <= in_en;
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end
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end
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// 存在数据请求且FIFO不为空时，才发送数据
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assign out_en <= (data_que && !fifo_empty) ? 1 : 0;
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async_fifo #(
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.DSIZE(3 * OUT_DEPTH),
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.ASIZE(128),
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) RGB_FIFO (
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.wclk(clk),
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.rclk(clk),
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.wrst_n(reset),
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.rrst_n(reset),
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.winc(fifo_en),
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.wdata(fifo_in),
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// .wfull(),
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// .awfull(),
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// .arempty(fifo_alempty)
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.rempty(fifo_empty),
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.rdata(data_out),
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.rinc(out_en)
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);
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endmodule
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@ -1,5 +1,91 @@
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module RGB_to_RAM (
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ports
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`timescale 1ns/1ps
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module RGB_to_RAM #(
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parameter COLOR_DEPTH = 8,
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parameter FIFO_SIZE = 128
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) (
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input clk,
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input reset,
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// 数据输入
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output in_que,
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input in_en,
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input [3 * COLOR_DEPTH - 1:0] data_in,
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// 写入SRAM
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input write_que,
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output write_en,
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output [15:0] data_write
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);
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// 状态机
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localparam READ_DATA = 0;
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localparam SEND_R = 1;
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localparam SEND_GB = 2;
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reg [2:0] state, nextState;
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reg [3 * COLOR_DEPTH - 1:0] data_cache;
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reg [15:0] fifo_data;
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wire fifo_full, fifo_empty;
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async_fifo #(
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.DSIZE(16),
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.ASIZE(FIFO_SIZE)
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) fifo_image (
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.wclk(clk),
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.wrst_n(reset),
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.rclk(clk),
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.rrst_n(reset),
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.winc(in_en),
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.wdata(fifo_data),
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.wfull(fifo_full),
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.rinc(write_en),
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.rdata(data_write),
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.rempty(fifo_empty)
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);
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// 当有数据请求且FIFO不为空时，输出数据
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assign write_en = (write_que && !fifo_empty) ? 1 : 0;
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always @(posedge clk or posedge reset) begin
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if (reset)
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state <= READ_DATA;
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else
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state <= nextState;
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end
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always @(posedge clk or posedge reset) begin
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if (reset) begin
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write_en <= 0;
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data_write <= 0;
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cnt <= 0;
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fifo_data <= 0;
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data_cache <= 0;
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end
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else begin
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case (state)
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// 读取数据
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READ_DATA: begin
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in_que <= 1;
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if (in_en) begin
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data_cache <= data_in;
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nextState <= SEND_R;
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end
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end
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SEND_R: begin
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in_que <= 0;
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fifo_data <= {8'b0, data_cache[3 * COLOR_DEPTH - 1:16]}
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nextState <= SEND_GB;
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end
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SEND_GB: begin
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fifo_data <= data_cache[15:0];
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nextState <= READ_DATA;
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end
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endcase
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end
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end
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endmodule
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@ -0,0 +1,760 @@
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/*-----------------------------------------------------------------------------
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Video Stream Scaler
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Author: David Kronstein
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Copyright 2011, David Kronstein, and individual contributors as indicated
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by the @authors tag.
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This is free software; you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as
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published by the Free Software Foundation; either version 2.1 of
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the License, or (at your option) any later version.
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This software is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this software; if not, write to the Free
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Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
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02110-1301 USA, or see the FSF site: http://www.fsf.org.
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-------------------------------------------------------------------------------
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Scales streaming video up or down in resolution. Bilinear and nearest neighbor
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modes are supported.
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Run-time adjustment of input and output resolution, scaling factors, and scale
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type.
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-------------------------------------------------------------------------------
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Revisions
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V1.0.0 Feb 21 2011 Initial Release David Kronstein
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Known bugs:
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Very slight numerical errors (+0/-2 LSb) in output data due to coefficient arithmetic.
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Impossible to notice without adjustment in video levels. Attempted to fix by setting
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coeff11 to 1.0 - other coefficients, but this caused timing issues.
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*/
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`default_nettype none
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module streamScaler #(
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//---------------------------Parameters----------------------------------------
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parameter DATA_WIDTH = 8, //Width of input/output data
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parameter CHANNELS = 1, //Number of channels of DATA_WIDTH, for color images
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parameter DISCARD_CNT_WIDTH = 8, //Width of inputDiscardCnt
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parameter INPUT_X_RES_WIDTH = 11, //Widths of input/output resolution control signals
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parameter INPUT_Y_RES_WIDTH = 11,
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parameter OUTPUT_X_RES_WIDTH = 11,
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parameter OUTPUT_Y_RES_WIDTH = 11,
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parameter FRACTION_BITS = 8, //Number of bits for fractional component of coefficients.
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parameter SCALE_INT_BITS = 4, //Width of integer component of scaling factor. The maximum input data width to
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//multipliers created will be SCALE_INT_BITS + SCALE_FRAC_BITS. Typically these
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//values will sum to 18 to match multipliers available in FPGAs.
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parameter SCALE_FRAC_BITS = 14, //Width of fractional component of scaling factor
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parameter BUFFER_SIZE = 4, //Depth of RFIFO
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//---------------------Non-user-definable parameters----------------------------
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parameter COEFF_WIDTH = FRACTION_BITS + 1,
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parameter SCALE_BITS = SCALE_INT_BITS + SCALE_FRAC_BITS,
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parameter BUFFER_SIZE_WIDTH = ((BUFFER_SIZE+1) <= 2) ? 1 : //wide enough to hold value BUFFER_SIZE + 1
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((BUFFER_SIZE+1) <= 4) ? 2 :
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((BUFFER_SIZE+1) <= 8) ? 3 :
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((BUFFER_SIZE+1) <= 16) ? 4 :
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((BUFFER_SIZE+1) <= 32) ? 5 :
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((BUFFER_SIZE+1) <= 64) ? 6 : 7
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)(
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//---------------------------Module IO-----------------------------------------
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//Clock and reset
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input wire clk,
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input wire rst,
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//User interface
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//Input
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input wire [DATA_WIDTH*CHANNELS-1:0]dIn,
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input wire dInValid,
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output wire nextDin,
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input wire start,
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//Output
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output reg [DATA_WIDTH*CHANNELS-1:0]
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dOut,
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output reg dOutValid, //latency of 4 clock cycles after nextDout is asserted
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input wire nextDout,
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//Control
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input wire [DISCARD_CNT_WIDTH-1:0] inputDiscardCnt, //Number of input pixels to discard before processing data. Used for clipping
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input wire [INPUT_X_RES_WIDTH-1:0] inputXRes, //Resolution of input data minus 1
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input wire [INPUT_Y_RES_WIDTH-1:0] inputYRes,
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input wire [OUTPUT_X_RES_WIDTH-1:0] outputXRes, //Resolution of output data minus 1
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input wire [OUTPUT_Y_RES_WIDTH-1:0] outputYRes,
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input wire [SCALE_BITS-1:0] xScale, //Scaling factors. Input resolution scaled up by 1/xScale. Format Q SCALE_INT_BITS.SCALE_FRAC_BITS
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input wire [SCALE_BITS-1:0] yScale, //Scaling factors. Input resolution scaled up by 1/yScale. Format Q SCALE_INT_BITS.SCALE_FRAC_BITS
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input wire [OUTPUT_X_RES_WIDTH-1+SCALE_FRAC_BITS:0]
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leftOffset, //Integer/fraction of input pixel to offset output data horizontally right. Format Q OUTPUT_X_RES_WIDTH.SCALE_FRAC_BITS
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input wire [SCALE_FRAC_BITS-1:0] topFracOffset, //Fraction of input pixel to offset data vertically down. Format Q0.SCALE_FRAC_BITS
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input wire nearestNeighbor //Use nearest neighbor resize instead of bilinear
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);
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//-----------------------Internal signals and registers------------------------
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reg advanceRead1;
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reg advanceRead2;
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wire [DATA_WIDTH*CHANNELS-1:0] readData00;
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wire [DATA_WIDTH*CHANNELS-1:0] readData01;
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wire [DATA_WIDTH*CHANNELS-1:0] readData10;
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wire [DATA_WIDTH*CHANNELS-1:0] readData11;
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reg [DATA_WIDTH*CHANNELS-1:0] readData00Reg;
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reg [DATA_WIDTH*CHANNELS-1:0] readData01Reg;
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reg [DATA_WIDTH*CHANNELS-1:0] readData10Reg;
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reg [DATA_WIDTH*CHANNELS-1:0] readData11Reg;
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wire [INPUT_X_RES_WIDTH-1:0] readAddress;
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reg readyForRead; //Indicates two full lines have been put into the buffer
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reg [OUTPUT_Y_RES_WIDTH-1:0] outputLine; //which output video line we're on
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reg [OUTPUT_X_RES_WIDTH-1:0] outputColumn; //which output video column we're on
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reg [INPUT_X_RES_WIDTH-1+SCALE_FRAC_BITS:0]
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xScaleAmount; //Fractional and integer components of input pixel select (multiply result)
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reg [INPUT_Y_RES_WIDTH-1+SCALE_FRAC_BITS:0]
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yScaleAmount; //Fractional and integer components of input pixel select (multiply result)
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reg [INPUT_Y_RES_WIDTH-1+SCALE_FRAC_BITS:0]
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yScaleAmountNext; //Fractional and integer components of input pixel select (multiply result)
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wire [BUFFER_SIZE_WIDTH-1:0] fillCount; //Numbers used rams in the ram fifo
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reg lineSwitchOutputDisable; //On the end of an output line, disable the output for one cycle to let the RAM data become valid
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reg dOutValidInt;
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reg [COEFF_WIDTH-1:0] xBlend;
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wire [COEFF_WIDTH-1:0] yBlend = {1'b0, yScaleAmount[SCALE_FRAC_BITS-1:SCALE_FRAC_BITS-FRACTION_BITS]};
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wire [INPUT_X_RES_WIDTH-1:0] xPixLow = xScaleAmount[INPUT_X_RES_WIDTH-1+SCALE_FRAC_BITS:SCALE_FRAC_BITS];
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wire [INPUT_Y_RES_WIDTH-1:0] yPixLow = yScaleAmount[INPUT_Y_RES_WIDTH-1+SCALE_FRAC_BITS:SCALE_FRAC_BITS];
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wire [INPUT_Y_RES_WIDTH-1:0] yPixLowNext = yScaleAmountNext[INPUT_Y_RES_WIDTH-1+SCALE_FRAC_BITS:SCALE_FRAC_BITS];
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wire allDataWritten; //Indicates that all data from input has been read in
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reg readState;
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//States for read state machine
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parameter RS_START = 0;
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parameter RS_READ_LINE = 1;
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//Read state machine
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//Controls the RFIFO(ram FIFO) readout and generates output data valid signals
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always @ (posedge clk or posedge rst or posedge start)
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begin
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if(rst | start)
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begin
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outputLine <= 0;
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outputColumn <= 0;
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xScaleAmount <= 0;
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yScaleAmount <= 0;
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readState <= RS_START;
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dOutValidInt <= 0;
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lineSwitchOutputDisable <= 0;
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advanceRead1 <= 0;
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advanceRead2 <= 0;
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yScaleAmountNext <= 0;
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end
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else
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begin
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case (readState)
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RS_START:
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begin
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xScaleAmount <= leftOffset;
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yScaleAmount <= {{INPUT_Y_RES_WIDTH{1'b0}}, topFracOffset};
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if(readyForRead)
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begin
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readState <= RS_READ_LINE;
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dOutValidInt <= 1;
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end
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end
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RS_READ_LINE:
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begin
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//outputLine goes through all output lines, and the logic determines which input lines to read into the RRB and which ones to discard.
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if(nextDout && dOutValidInt)
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begin
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if(outputColumn == outputXRes)
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begin //On the last input pixel of the line
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if(yPixLowNext == (yPixLow + 1)) //If the next input line is only one greater, advance the RRB by one only
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begin
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advanceRead1 <= 1;
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if(fillCount < 3) //If the RRB doesn't have enough data, stop reading it out
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dOutValidInt <= 0;
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end
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else if(yPixLowNext > (yPixLow + 1)) //If the next input line is two or more greater, advance the read by two
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||||
begin
|
||||
advanceRead2 <= 1;
|
||||
if(fillCount < 4) //If the RRB doesn't have enough data, stop reading it out
|
||||
dOutValidInt <= 0;
|
||||
end
|
||||
|
||||
outputColumn <= 0;
|
||||
xScaleAmount <= leftOffset;
|
||||
outputLine <= outputLine + 1;
|
||||
yScaleAmount <= yScaleAmountNext;
|
||||
lineSwitchOutputDisable <= 1;
|
||||
end
|
||||
else
|
||||
begin
|
||||
//Advance the output pixel selection values except when waiting for the ram data to become valid
|
||||
if(lineSwitchOutputDisable == 0)
|
||||
begin
|
||||
outputColumn <= outputColumn + 1;
|
||||
xScaleAmount <= (outputColumn + 1) * xScale + leftOffset;
|
||||
end
|
||||
advanceRead1 <= 0;
|
||||
advanceRead2 <= 0;
|
||||
lineSwitchOutputDisable <= 0;
|
||||
end
|
||||
end
|
||||
else //else from if(nextDout && dOutValidInt)
|
||||
begin
|
||||
advanceRead1 <= 0;
|
||||
advanceRead2 <= 0;
|
||||
lineSwitchOutputDisable <= 0;
|
||||
end
|
||||
|
||||
//Once the RRB has enough data, let data be read from it. If all input data has been written, always allow read
|
||||
if(fillCount >= 2 && dOutValidInt == 0 || allDataWritten)
|
||||
begin
|
||||
if((!advanceRead1 && !advanceRead2))
|
||||
begin
|
||||
dOutValidInt <= 1;
|
||||
lineSwitchOutputDisable <= 0;
|
||||
end
|
||||
end
|
||||
end//state RS_READ_LINE:
|
||||
endcase
|
||||
|
||||
//yScaleAmountNext is used to determine which input lines are valid.
|
||||
yScaleAmountNext <= (outputLine + 1) * yScale + {{OUTPUT_Y_RES_WIDTH{1'b0}}, topFracOffset};
|
||||
end
|
||||
end
|
||||
|
||||
assign readAddress = xPixLow;
|
||||
|
||||
//Generate dOutValid signal, delayed to account for delays in data path
|
||||
reg dOutValid_1;
|
||||
reg dOutValid_2;
|
||||
reg dOutValid_3;
|
||||
|
||||
always @(posedge clk or posedge rst)
|
||||
begin
|
||||
if(rst)
|
||||
begin
|
||||
dOutValid_1 <= 0;
|
||||
dOutValid_2 <= 0;
|
||||
dOutValid_3 <= 0;
|
||||
dOutValid <= 0;
|
||||
end
|
||||
else
|
||||
begin
|
||||
dOutValid_1 <= nextDout && dOutValidInt && !lineSwitchOutputDisable;
|
||||
dOutValid_2 <= dOutValid_1;
|
||||
dOutValid_3 <= dOutValid_2;
|
||||
dOutValid <= dOutValid_3;
|
||||
end
|
||||
end
|
||||
|
||||
//-----------------------Output data generation-----------------------------
|
||||
//Scale amount values are used to generate coefficients for the four pixels coming out of the RRB to be multiplied with.
|
||||
|
||||
//Coefficients for each of the four pixels
|
||||
//Format Q1.FRACTION_BITS
|
||||
// yx
|
||||
reg [COEFF_WIDTH-1:0] coeff00; //Top left
|
||||
reg [COEFF_WIDTH-1:0] coeff01; //Top right
|
||||
reg [COEFF_WIDTH-1:0] coeff10; //Bottom left
|
||||
reg [COEFF_WIDTH-1:0] coeff11; //Bottom right
|
||||
|
||||
//Coefficient value of one, format Q1.COEFF_WIDTH-1
|
||||
wire [COEFF_WIDTH-1:0] coeffOne = {1'b1, {(COEFF_WIDTH-1){1'b0}}}; //One in MSb, zeros elsewhere
|
||||
//Coefficient value of one half, format Q1.COEFF_WIDTH-1
|
||||
wire [COEFF_WIDTH-1:0] coeffHalf = {2'b01, {(COEFF_WIDTH-2){1'b0}}};
|
||||
|
||||
//Compute bilinear interpolation coefficinets. Done here because these pre-registerd values are used twice.
|
||||
//Adding coeffHalf to get the nearest value.
|
||||
wire [COEFF_WIDTH-1:0] preCoeff00 = (((coeffOne - xBlend) * (coeffOne - yBlend) + (coeffHalf - 1)) >> FRACTION_BITS) & {{COEFF_WIDTH{1'b0}}, {COEFF_WIDTH{1'b1}}};
|
||||
wire [COEFF_WIDTH-1:0] preCoeff01 = ((xBlend * (coeffOne - yBlend) + (coeffHalf - 1)) >> FRACTION_BITS) & {{COEFF_WIDTH{1'b0}}, {COEFF_WIDTH{1'b1}}};
|
||||
wire [COEFF_WIDTH-1:0] preCoeff10 = (((coeffOne - xBlend) * yBlend + (coeffHalf - 1)) >> FRACTION_BITS) & {{COEFF_WIDTH{1'b0}}, {COEFF_WIDTH{1'b1}}};
|
||||
|
||||
//Compute the coefficients
|
||||
always @(posedge clk or posedge rst)
|
||||
begin
|
||||
if(rst)
|
||||
begin
|
||||
coeff00 <= 0;
|
||||
coeff01 <= 0;
|
||||
coeff10 <= 0;
|
||||
coeff11 <= 0;
|
||||
xBlend <= 0;
|
||||
end
|
||||
else
|
||||
begin
|
||||
xBlend <= {1'b0, xScaleAmount[SCALE_FRAC_BITS-1:SCALE_FRAC_BITS-FRACTION_BITS]}; //Changed to registered to improve timing
|
||||
|
||||
if(nearestNeighbor == 1'b0)
|
||||
begin
|
||||
//Normal bilinear interpolation
|
||||
coeff00 <= preCoeff00;
|
||||
coeff01 <= preCoeff01;
|
||||
coeff10 <= preCoeff10;
|
||||
coeff11 <= ((xBlend * yBlend + (coeffHalf - 1)) >> FRACTION_BITS) & {{COEFF_WIDTH{1'b0}}, {COEFF_WIDTH{1'b1}}};
|
||||
//coeff11 <= coeffOne - preCoeff00 - preCoeff01 - preCoeff10; //Guarantee that all coefficients sum to coeffOne. Saves a multiply too. Reverted to previous method due to timing issues.
|
||||
end
|
||||
else
|
||||
begin
|
||||
//Nearest neighbor interploation, set one coefficient to 1.0, the rest to zero based on the fractions
|
||||
coeff00 <= xBlend < coeffHalf && yBlend < coeffHalf ? coeffOne : {COEFF_WIDTH{1'b0}};
|
||||
coeff01 <= xBlend >= coeffHalf && yBlend < coeffHalf ? coeffOne : {COEFF_WIDTH{1'b0}};
|
||||
coeff10 <= xBlend < coeffHalf && yBlend >= coeffHalf ? coeffOne : {COEFF_WIDTH{1'b0}};
|
||||
coeff11 <= xBlend >= coeffHalf && yBlend >= coeffHalf ? coeffOne : {COEFF_WIDTH{1'b0}};
|
||||
end
|
||||
end
|
||||
end
|
||||
|
||||
|
||||
//Generate the blending multipliers
|
||||
reg [(DATA_WIDTH+COEFF_WIDTH)*CHANNELS-1:0] product00, product01, product10, product11;
|
||||
|
||||
generate
|
||||
genvar channel;
|
||||
for(channel = 0; channel < CHANNELS; channel = channel + 1)
|
||||
begin : blend_mult_generate
|
||||
always @(posedge clk or posedge rst)
|
||||
begin
|
||||
if(rst)
|
||||
begin
|
||||
//productxx[channel] <= 0;
|
||||
product00[ (DATA_WIDTH+COEFF_WIDTH)*(channel+1)-1 : (DATA_WIDTH+COEFF_WIDTH)*channel] <= 0;
|
||||
product01[ (DATA_WIDTH+COEFF_WIDTH)*(channel+1)-1 : (DATA_WIDTH+COEFF_WIDTH)*channel] <= 0;
|
||||
product10[ (DATA_WIDTH+COEFF_WIDTH)*(channel+1)-1 : (DATA_WIDTH+COEFF_WIDTH)*channel] <= 0;
|
||||
product11[ (DATA_WIDTH+COEFF_WIDTH)*(channel+1)-1 : (DATA_WIDTH+COEFF_WIDTH)*channel] <= 0;
|
||||
|
||||
//readDataxxReg[channel] <= 0;
|
||||
readData00Reg[ DATA_WIDTH*(channel+1)-1 : DATA_WIDTH*channel ] <= 0;
|
||||
readData01Reg[ DATA_WIDTH*(channel+1)-1 : DATA_WIDTH*channel ] <= 0;
|
||||
readData10Reg[ DATA_WIDTH*(channel+1)-1 : DATA_WIDTH*channel ] <= 0;
|
||||
readData11Reg[ DATA_WIDTH*(channel+1)-1 : DATA_WIDTH*channel ] <= 0;
|
||||
|
||||
//dOut[channel] <= 0;
|
||||
dOut[ DATA_WIDTH*(channel+1)-1 : DATA_WIDTH*channel ] <= 0;
|
||||
end
|
||||
else
|
||||
begin
|
||||
//readDataxxReg[channel] <= readDataxx[channel];
|
||||
readData00Reg[ DATA_WIDTH*(channel+1)-1 : DATA_WIDTH*channel ] <= readData00[ DATA_WIDTH*(channel+1)-1 : DATA_WIDTH*channel ];
|
||||
readData01Reg[ DATA_WIDTH*(channel+1)-1 : DATA_WIDTH*channel ] <= readData01[ DATA_WIDTH*(channel+1)-1 : DATA_WIDTH*channel ];
|
||||
readData10Reg[ DATA_WIDTH*(channel+1)-1 : DATA_WIDTH*channel ] <= readData10[ DATA_WIDTH*(channel+1)-1 : DATA_WIDTH*channel ];
|
||||
readData11Reg[ DATA_WIDTH*(channel+1)-1 : DATA_WIDTH*channel ] <= readData11[ DATA_WIDTH*(channel+1)-1 : DATA_WIDTH*channel ];
|
||||
|
||||
//productxx[channel] <= readDataxxReg[channel] * coeffxx
|
||||
product00[ (DATA_WIDTH+COEFF_WIDTH)*(channel+1)-1 : (DATA_WIDTH+COEFF_WIDTH)*channel] <= readData00Reg[ DATA_WIDTH*(channel+1)-1 : DATA_WIDTH*channel ] * coeff00;
|
||||
product01[ (DATA_WIDTH+COEFF_WIDTH)*(channel+1)-1 : (DATA_WIDTH+COEFF_WIDTH)*channel] <= readData01Reg[ DATA_WIDTH*(channel+1)-1 : DATA_WIDTH*channel ] * coeff01;
|
||||
product10[ (DATA_WIDTH+COEFF_WIDTH)*(channel+1)-1 : (DATA_WIDTH+COEFF_WIDTH)*channel] <= readData10Reg[ DATA_WIDTH*(channel+1)-1 : DATA_WIDTH*channel ] * coeff10;
|
||||
product11[ (DATA_WIDTH+COEFF_WIDTH)*(channel+1)-1 : (DATA_WIDTH+COEFF_WIDTH)*channel] <= readData11Reg[ DATA_WIDTH*(channel+1)-1 : DATA_WIDTH*channel ] * coeff11;
|
||||
|
||||
//dOut[channel] <= (((product00[channel]) +
|
||||
// (product01[channel]) +
|
||||
// (product10[channel]) +
|
||||
// (product11[channel])) >> FRACTION_BITS) & ({ {COEFF_WIDTH{1'b0}}, {DATA_WIDTH{1'b1}} });
|
||||
dOut[ DATA_WIDTH*(channel+1)-1 : DATA_WIDTH*channel ] <=
|
||||
(((product00[ (DATA_WIDTH+COEFF_WIDTH)*(channel+1)-1 : (DATA_WIDTH+COEFF_WIDTH)*channel]) +
|
||||
(product01[ (DATA_WIDTH+COEFF_WIDTH)*(channel+1)-1 : (DATA_WIDTH+COEFF_WIDTH)*channel]) +
|
||||
(product10[ (DATA_WIDTH+COEFF_WIDTH)*(channel+1)-1 : (DATA_WIDTH+COEFF_WIDTH)*channel]) +
|
||||
(product11[ (DATA_WIDTH+COEFF_WIDTH)*(channel+1)-1 : (DATA_WIDTH+COEFF_WIDTH)*channel])) >> FRACTION_BITS) & ({ {COEFF_WIDTH{1'b0}}, {DATA_WIDTH{1'b1}} });
|
||||
end
|
||||
end
|
||||
end
|
||||
endgenerate
|
||||
|
||||
|
||||
//---------------------------Data write logic----------------------------------
|
||||
//Places input data into the correct ram in the RFIFO (ram FIFO)
|
||||
//Controls writing to the RFIFO, and discards lines that arn't used
|
||||
|
||||
reg [INPUT_Y_RES_WIDTH-1:0] writeNextValidLine; //Which line greater than writeRowCount is the next one that must be read in
|
||||
reg [INPUT_Y_RES_WIDTH-1:0] writeNextPlusOne; //One greater than writeNextValidLine, because we must always read in two adjacent lines
|
||||
reg [INPUT_Y_RES_WIDTH-1:0] writeRowCount; //Which line we're reading from dIn
|
||||
reg [OUTPUT_Y_RES_WIDTH-1:0] writeOutputLine; //The output line that corresponds to the input line. This is incremented until writeNextValidLine is greater than writeRowCount
|
||||
reg getNextPlusOne; //Flag so that writeNextPlusOne is captured only once after writeRowCount >= writeNextValidLine. This is in case multiple cycles are requred until writeNextValidLine changes.
|
||||
|
||||
//Determine which lines to read out and which to discard.
|
||||
//writeNextValidLine is the next valid line number that needs to be read out above current value writeRowCount
|
||||
//writeNextPlusOne also needs to be read out (to do interpolation), this may or may not be equal to writeNextValidLine
|
||||
always @(posedge clk or posedge rst or posedge start)
|
||||
begin
|
||||
if(rst | start)
|
||||
begin
|
||||
writeOutputLine <= 0;
|
||||
writeNextValidLine <= 0;
|
||||
writeNextPlusOne <= 1;
|
||||
getNextPlusOne <= 1;
|
||||
end
|
||||
else
|
||||
begin
|
||||
if(writeRowCount >= writeNextValidLine) //When writeRowCount becomes higher than the next valid line to read out, comptue the next valid line.
|
||||
begin
|
||||
if(getNextPlusOne) //Keep writeNextPlusOne
|
||||
begin
|
||||
writeNextPlusOne <= writeNextValidLine + 1;
|
||||
end
|
||||
getNextPlusOne <= 0;
|
||||
writeOutputLine <= writeOutputLine + 1;
|
||||
writeNextValidLine <= ((writeOutputLine*yScale + {{(OUTPUT_Y_RES_WIDTH + SCALE_INT_BITS){1'b0}}, topFracOffset}) >> SCALE_FRAC_BITS) & {{SCALE_BITS{1'b0}}, {OUTPUT_Y_RES_WIDTH{1'b1}}};
|
||||
end
|
||||
else
|
||||
begin
|
||||
getNextPlusOne <= 1;
|
||||
end
|
||||
end
|
||||
end
|
||||
|
||||
reg discardInput;
|
||||
reg [DISCARD_CNT_WIDTH-1:0] discardCountReg;
|
||||
wire advanceWrite;
|
||||
|
||||
reg [1:0] writeState;
|
||||
|
||||
reg [INPUT_X_RES_WIDTH-1:0] writeColCount;
|
||||
reg enableNextDin;
|
||||
reg forceRead;
|
||||
|
||||
//Write state machine
|
||||
//Controls writing scaler input data into the RRB
|
||||
|
||||
parameter WS_START = 0;
|
||||
parameter WS_DISCARD = 1;
|
||||
parameter WS_READ = 2;
|
||||
parameter WS_DONE = 3;
|
||||
|
||||
//Control write and address signals to write data into ram FIFO
|
||||
always @ (posedge clk or posedge rst or posedge start)
|
||||
begin
|
||||
if(rst | start)
|
||||
begin
|
||||
writeState <= WS_START;
|
||||
enableNextDin <= 0;
|
||||
discardInput <= 0;
|
||||
readyForRead <= 0;
|
||||
writeRowCount <= 0;
|
||||
writeColCount <= 0;
|
||||
discardCountReg <= 0;
|
||||
forceRead <= 0;
|
||||
end
|
||||
else
|
||||
begin
|
||||
case (writeState)
|
||||
|
||||
WS_START:
|
||||
begin
|
||||
discardCountReg <= inputDiscardCnt;
|
||||
if(inputDiscardCnt > 0)
|
||||
begin
|
||||
discardInput <= 1;
|
||||
enableNextDin <= 1;
|
||||
writeState <= WS_DISCARD;
|
||||
end
|
||||
else
|
||||
begin
|
||||
discardInput <= 0;
|
||||
enableNextDin <= 1;
|
||||
writeState <= WS_READ;
|
||||
end
|
||||
discardInput <= (inputDiscardCnt > 0) ? 1'b1 : 1'b0;
|
||||
end
|
||||
|
||||
WS_DISCARD: //Discard pixels from input data
|
||||
begin
|
||||
if(dInValid)
|
||||
begin
|
||||
discardCountReg <= discardCountReg - 1;
|
||||
if((discardCountReg - 1) == 0)
|
||||
begin
|
||||
discardInput <= 0;
|
||||
writeState <= WS_READ;
|
||||
end
|
||||
end
|
||||
end
|
||||
|
||||
WS_READ:
|
||||
begin
|
||||
if(dInValid & nextDin)
|
||||
begin
|
||||
if(writeColCount == inputXRes)
|
||||
begin //Occurs on the last pixel in the line
|
||||
if((writeNextValidLine == writeRowCount + 1) ||
|
||||
(writeNextPlusOne == writeRowCount + 1))
|
||||
begin //Next line is valid, write into buffer
|
||||
discardInput <= 0;
|
||||
end
|
||||
else
|
||||
begin //Next line is not valid, discard
|
||||
discardInput <= 1;
|
||||
end
|
||||
|
||||
//Once writeRowCount is >= 2, data is ready to start being output.
|
||||
if(writeRowCount[1])
|
||||
readyForRead <= 1;
|
||||
|
||||
if(writeRowCount == inputYRes) //When all data has been read in, stop reading.
|
||||
begin
|
||||
writeState <= WS_DONE;
|
||||
enableNextDin <= 0;
|
||||
forceRead <= 1;
|
||||
end
|
||||
|
||||
writeColCount <= 0;
|
||||
writeRowCount <= writeRowCount + 1;
|
||||
end
|
||||
else
|
||||
begin
|
||||
writeColCount <= writeColCount + 1;
|
||||
end
|
||||
end
|
||||
end
|
||||
|
||||
WS_DONE:
|
||||
begin
|
||||
//do nothing, wait for reset
|
||||
end
|
||||
|
||||
endcase
|
||||
end
|
||||
end
|
||||
|
||||
|
||||
//Advance write whenever we have just written a valid line (discardInput == 0)
|
||||
//Generate this signal one earlier than discardInput above that uses the same conditions, to advance the buffer at the right time.
|
||||
assign advanceWrite = (writeColCount == inputXRes) & (discardInput == 0) & dInValid & nextDin;
|
||||
assign allDataWritten = writeState == WS_DONE;
|
||||
assign nextDin = (fillCount < BUFFER_SIZE) & enableNextDin;
|
||||
|
||||
ramFifo #(
|
||||
.DATA_WIDTH( DATA_WIDTH*CHANNELS ),
|
||||
.ADDRESS_WIDTH( INPUT_X_RES_WIDTH ), //Controls width of RAMs
|
||||
.BUFFER_SIZE( BUFFER_SIZE ) //Number of RAMs
|
||||
) ramRB (
|
||||
.clk( clk ),
|
||||
.rst( rst | start ),
|
||||
.advanceRead1( advanceRead1 ),
|
||||
.advanceRead2( advanceRead2 ),
|
||||
.advanceWrite( advanceWrite ),
|
||||
.forceRead( forceRead ),
|
||||
|
||||
.writeData( dIn ),
|
||||
.writeAddress( writeColCount ),
|
||||
.writeEnable( dInValid & nextDin & enableNextDin & ~discardInput ),
|
||||
.fillCount( fillCount ),
|
||||
|
||||
.readData00( readData00 ),
|
||||
.readData01( readData01 ),
|
||||
.readData10( readData10 ),
|
||||
.readData11( readData11 ),
|
||||
.readAddress( readAddress )
|
||||
);
|
||||
|
||||
endmodule //scaler
|
||||
|
||||
|
||||
|
||||
//---------------------------Ram FIFO (RFIFO)-----------------------------
|
||||
//FIFO buffer with rams as the elements, instead of data
|
||||
//One ram is filled, while two others are simultaneously read out.
|
||||
//Four neighboring pixels are read out at once, at the selected RAM and one line down, and at readAddress and readAddress + 1
|
||||
module ramFifo #(
|
||||
parameter DATA_WIDTH = 8,
|
||||
parameter ADDRESS_WIDTH = 8,
|
||||
parameter BUFFER_SIZE = 2,
|
||||
parameter BUFFER_SIZE_WIDTH = ((BUFFER_SIZE+1) <= 2) ? 1 : //wide enough to hold value BUFFER_SIZE + 1
|
||||
((BUFFER_SIZE+1) <= 4) ? 2 :
|
||||
((BUFFER_SIZE+1) <= 8) ? 3 :
|
||||
((BUFFER_SIZE+1) <= 16) ? 4 :
|
||||
((BUFFER_SIZE+1) <= 32) ? 5 :
|
||||
((BUFFER_SIZE+1) <= 64) ? 6 : 7
|
||||
)(
|
||||
input wire clk,
|
||||
input wire rst,
|
||||
input wire advanceRead1, //Advance selected read RAM by one
|
||||
input wire advanceRead2, //Advance selected read RAM by two
|
||||
input wire advanceWrite, //Advance selected write RAM by one
|
||||
input wire forceRead, //Disables writing to allow all data to be read out (RAM being written to cannot be read from normally)
|
||||
|
||||
input wire [DATA_WIDTH-1:0] writeData,
|
||||
input wire [ADDRESS_WIDTH-1:0] writeAddress,
|
||||
input wire writeEnable,
|
||||
output reg [BUFFER_SIZE_WIDTH-1:0]
|
||||
fillCount,
|
||||
|
||||
// yx
|
||||
output wire [DATA_WIDTH-1:0] readData00, //Read from deepest RAM (earliest data), at readAddress
|
||||
output wire [DATA_WIDTH-1:0] readData01, //Read from deepest RAM (earliest data), at readAddress + 1
|
||||
output wire [DATA_WIDTH-1:0] readData10, //Read from second deepest RAM (second earliest data), at readAddress
|
||||
output wire [DATA_WIDTH-1:0] readData11, //Read from second deepest RAM (second earliest data), at readAddress + 1
|
||||
input wire [ADDRESS_WIDTH-1:0] readAddress
|
||||
);
|
||||
|
||||
reg [BUFFER_SIZE-1:0] writeSelect;
|
||||
reg [BUFFER_SIZE-1:0] readSelect;
|
||||
|
||||
//Read select ring register
|
||||
always @(posedge clk or posedge rst)
|
||||
begin
|
||||
if(rst)
|
||||
readSelect <= 1;
|
||||
else
|
||||
begin
|
||||
if(advanceRead1)
|
||||
begin
|
||||
readSelect <= {readSelect[BUFFER_SIZE-2 : 0], readSelect[BUFFER_SIZE-1]};
|
||||
end
|
||||
else if(advanceRead2)
|
||||
begin
|
||||
readSelect <= {readSelect[BUFFER_SIZE-3 : 0], readSelect[BUFFER_SIZE-1:BUFFER_SIZE-2]};
|
||||
end
|
||||
end
|
||||
end
|
||||
|
||||
//Write select ring register
|
||||
always @(posedge clk or posedge rst)
|
||||
begin
|
||||
if(rst)
|
||||
writeSelect <= 1;
|
||||
else
|
||||
begin
|
||||
if(advanceWrite)
|
||||
begin
|
||||
writeSelect <= {writeSelect[BUFFER_SIZE-2 : 0], writeSelect[BUFFER_SIZE-1]};
|
||||
end
|
||||
end
|
||||
end
|
||||
|
||||
wire [DATA_WIDTH-1:0] ramDataOutA [2**BUFFER_SIZE-1:0];
|
||||
wire [DATA_WIDTH-1:0] ramDataOutB [2**BUFFER_SIZE-1:0];
|
||||
|
||||
//Generate to instantiate the RAMs
|
||||
generate
|
||||
genvar i;
|
||||
for(i = 0; i < BUFFER_SIZE; i = i + 1)
|
||||
begin : ram_generate
|
||||
|
||||
ramDualPort #(
|
||||
.DATA_WIDTH( DATA_WIDTH ),
|
||||
.ADDRESS_WIDTH( ADDRESS_WIDTH )
|
||||
) ram_inst_i(
|
||||
.clk( clk ),
|
||||
|
||||
//Port A is written to as well as read from. When writing, this port cannot be read from.
|
||||
//As long as the buffer is large enough, this will not cause any problem.
|
||||
.addrA( ((writeSelect[i] == 1'b1) && !forceRead && writeEnable) ? writeAddress : readAddress ), //&& writeEnable is
|
||||
//to allow the full buffer to be used. After the buffer is filled, write is advanced, so writeSelect
|
||||
//and readSelect are the same. The full buffer isn't written to, so this allows the read to work properly.
|
||||
.dataA( writeData ),
|
||||
.weA( ((writeSelect[i] == 1'b1) && !forceRead) ? writeEnable : 1'b0 ),
|
||||
.qA( ramDataOutA[2**i] ),
|
||||
|
||||
.addrB( readAddress + 1 ),
|
||||
.dataB( 0 ),
|
||||
.weB( 1'b0 ),
|
||||
.qB( ramDataOutB[2**i] )
|
||||
);
|
||||
end
|
||||
endgenerate
|
||||
|
||||
//Select which ram to read from
|
||||
wire [BUFFER_SIZE-1:0] readSelect0 = readSelect;
|
||||
wire [BUFFER_SIZE-1:0] readSelect1 = (readSelect << 1) | readSelect[BUFFER_SIZE-1];
|
||||
|
||||
//Steer the output data to the right ports
|
||||
assign readData00 = ramDataOutA[readSelect0];
|
||||
assign readData10 = ramDataOutA[readSelect1];
|
||||
assign readData01 = ramDataOutB[readSelect0];
|
||||
assign readData11 = ramDataOutB[readSelect1];
|
||||
|
||||
//Keep track of fill level
|
||||
always @(posedge clk or posedge rst)
|
||||
begin
|
||||
if(rst)
|
||||
begin
|
||||
fillCount <= 0;
|
||||
end
|
||||
else
|
||||
begin
|
||||
if(advanceWrite)
|
||||
begin
|
||||
if(advanceRead1)
|
||||
fillCount <= fillCount;
|
||||
else if(advanceRead2)
|
||||
fillCount <= fillCount - 1;
|
||||
else
|
||||
fillCount <= fillCount + 1;
|
||||
end
|
||||
else
|
||||
begin
|
||||
if(advanceRead1)
|
||||
fillCount <= fillCount - 1;
|
||||
else if(advanceRead2)
|
||||
fillCount <= fillCount - 2;
|
||||
else
|
||||
fillCount <= fillCount;
|
||||
end
|
||||
end
|
||||
end
|
||||
|
||||
endmodule //ramFifo
|
||||
|
||||
|
||||
//Dual port RAM
|
||||
module ramDualPort #(
|
||||
parameter DATA_WIDTH = 8,
|
||||
parameter ADDRESS_WIDTH = 8
|
||||
)(
|
||||
input wire [(DATA_WIDTH-1):0] dataA, dataB,
|
||||
input wire [(ADDRESS_WIDTH-1):0] addrA, addrB,
|
||||
input wire weA, weB, clk,
|
||||
output reg [(DATA_WIDTH-1):0] qA, qB
|
||||
);
|
||||
|
||||
// Declare the RAM variable
|
||||
reg [DATA_WIDTH-1:0] ram[2**ADDRESS_WIDTH-1:0];
|
||||
|
||||
//Port A
|
||||
always @ (posedge clk)
|
||||
begin
|
||||
if (weA)
|
||||
begin
|
||||
ram[addrA] <= dataA;
|
||||
qA <= dataA;
|
||||
end
|
||||
else
|
||||
begin
|
||||
qA <= ram[addrA];
|
||||
end
|
||||
end
|
||||
|
||||
//Port B
|
||||
always @ (posedge clk)
|
||||
begin
|
||||
if (weB)
|
||||
begin
|
||||
ram[addrB] <= dataB;
|
||||
qB <= dataB;
|
||||
end
|
||||
else
|
||||
begin
|
||||
qB <= ram[addrB];
|
||||
end
|
||||
end
|
||||
|
||||
endmodule //ramDualPort
|
||||
Binary file not shown.
Binary file not shown.
Binary file not shown.
|
|
@ -0,0 +1,437 @@
|
|||
/*-----------------------------------------------------------------------------
|
||||
|
||||
Video Stream Scaler testbench
|
||||
|
||||
Author: David Kronstein
|
||||
|
||||
|
||||
|
||||
Copyright 2011, David Kronstein, and individual contributors as indicated
|
||||
by the @authors tag.
|
||||
|
||||
This is free software; you can redistribute it and/or modify it
|
||||
under the terms of the GNU Lesser General Public License as
|
||||
published by the Free Software Foundation; either version 2.1 of
|
||||
the License, or (at your option) any later version.
|
||||
|
||||
This software is distributed in the hope that it will be useful,
|
||||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||||
Lesser General Public License for more details.
|
||||
|
||||
You should have received a copy of the GNU Lesser General Public
|
||||
License along with this software; if not, write to the Free
|
||||
Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
|
||||
02110-1301 USA, or see the FSF site: http://www.fsf.org.
|
||||
|
||||
-------------------------------------------------------------------------------
|
||||
|
||||
Testbench for streamScaler V1.0.0
|
||||
|
||||
*/
|
||||
|
||||
`default_nettype none
|
||||
|
||||
//Input files. Raw data format, no header. 8 bits per pixel, 3 color channels.
|
||||
`define INPUT640x512 "src/input640x512RGB.raw"
|
||||
`define INPUT1280x1024 "src/input1280x1024RGB.raw"
|
||||
`define INPUT1280x1024_21EXTRA "src/input640x512_21extraRGB.raw" //21 extra pixels at the start to be discarded
|
||||
|
||||
module scalerTestbench;
|
||||
parameter BUFFER_SIZE = 4;
|
||||
|
||||
wire [7-1:0] done;
|
||||
|
||||
//640x512 to 1280x1024
|
||||
scalerTest #(
|
||||
.INPUT_X_RES ( 640-1 ),
|
||||
.INPUT_Y_RES ( 512-1 ),
|
||||
.OUTPUT_X_RES ( 1280-1 ), //Output resolution - 1
|
||||
.OUTPUT_Y_RES ( 1024-1 ), //Output resolution - 1
|
||||
//.X_SCALE ( X_SCALE ),
|
||||
//.Y_SCALE ( Y_SCALE ),
|
||||
|
||||
.DATA_WIDTH ( 8 ),
|
||||
.DISCARD_CNT_WIDTH ( 8 ),
|
||||
.INPUT_X_RES_WIDTH ( 11 ),
|
||||
.INPUT_Y_RES_WIDTH ( 11 ),
|
||||
.OUTPUT_X_RES_WIDTH ( 11 ),
|
||||
.OUTPUT_Y_RES_WIDTH ( 11 ),
|
||||
.BUFFER_SIZE ( BUFFER_SIZE ) //Number of RAMs in RAM ring buffer
|
||||
) st_640x512to1280x1024 (
|
||||
.inputFilename( `INPUT640x512 ),
|
||||
.outputFilename( "out/output640x512to1280x1024.raw" ),
|
||||
|
||||
//Control
|
||||
.inputDiscardCnt( 0 ), //Number of input pixels to discard before processing data. Used for clipping
|
||||
.leftOffset( 0 ),
|
||||
.topFracOffset( 0 ),
|
||||
.nearestNeighbor( 0 ),
|
||||
.done ( done[0] )
|
||||
);
|
||||
|
||||
|
||||
//640x512 to 640x512
|
||||
scalerTest #(
|
||||
.INPUT_X_RES ( 640-1 ),
|
||||
.INPUT_Y_RES ( 512-1 ),
|
||||
.OUTPUT_X_RES ( 640-1 ), //Output resolution - 1
|
||||
.OUTPUT_Y_RES ( 512-1 ), //Output resolution - 1
|
||||
.X_SCALE ( 32'h4000 ),
|
||||
.Y_SCALE ( 32'h4000 ),
|
||||
|
||||
.DATA_WIDTH ( 8 ),
|
||||
.DISCARD_CNT_WIDTH ( 8 ),
|
||||
.INPUT_X_RES_WIDTH ( 11 ),
|
||||
.INPUT_Y_RES_WIDTH ( 11 ),
|
||||
.OUTPUT_X_RES_WIDTH ( 11 ),
|
||||
.OUTPUT_Y_RES_WIDTH ( 11 ),
|
||||
.BUFFER_SIZE ( BUFFER_SIZE ) //Number of RAMs in RAM ring buffer
|
||||
) st_640x512to640x512 (
|
||||
.inputFilename( `INPUT640x512 ),
|
||||
.outputFilename( "out/output640x512to640x512.raw" ),
|
||||
|
||||
//Control
|
||||
.inputDiscardCnt( 0 ), //Number of input pixels to discard before processing data. Used for clipping
|
||||
.leftOffset( 0 ),
|
||||
.topFracOffset( 0 ),
|
||||
.nearestNeighbor( 0 ),
|
||||
.done ( done[1] )
|
||||
);
|
||||
|
||||
|
||||
//1280x1024 to 960x768
|
||||
scalerTest #(
|
||||
.INPUT_X_RES ( 1280-1 ),
|
||||
.INPUT_Y_RES ( 1024-1 ),
|
||||
.OUTPUT_X_RES ( 960-1 ), //Output resolution - 1
|
||||
.OUTPUT_Y_RES ( 768-1 ), //Output resolution - 1
|
||||
//.X_SCALE ( X_SCALE ),
|
||||
//.Y_SCALE ( Y_SCALE ),
|
||||
|
||||
.DATA_WIDTH ( 8 ),
|
||||
.DISCARD_CNT_WIDTH ( 8 ),
|
||||
.INPUT_X_RES_WIDTH ( 11 ),
|
||||
.INPUT_Y_RES_WIDTH ( 11 ),
|
||||
.OUTPUT_X_RES_WIDTH ( 11 ),
|
||||
.OUTPUT_Y_RES_WIDTH ( 11 ),
|
||||
.BUFFER_SIZE ( BUFFER_SIZE ) //Number of RAMs in RAM ring buffer
|
||||
) st_1280x1024to960x768 (
|
||||
.inputFilename( `INPUT1280x1024 ),
|
||||
.outputFilename( "out/output1280x1024to960x768.raw" ),
|
||||
|
||||
//Control
|
||||
.inputDiscardCnt( 0 ), //Number of input pixels to discard before processing data. Used for clipping
|
||||
.leftOffset( 0 ),
|
||||
.topFracOffset( 0 ),
|
||||
.nearestNeighbor( 0 ),
|
||||
.done ( done[2] )
|
||||
);
|
||||
|
||||
|
||||
//1280x1024 to 640x512
|
||||
scalerTest #(
|
||||
.INPUT_X_RES ( 1280-1 ),
|
||||
.INPUT_Y_RES ( 1024-1 ),
|
||||
.OUTPUT_X_RES ( 640-1 ), //Output resolution - 1
|
||||
.OUTPUT_Y_RES ( 512-1 ), //Output resolution - 1
|
||||
.X_SCALE ( 32'h4000*2 ),
|
||||
.Y_SCALE ( 32'h4000*2 ),
|
||||
|
||||
.DATA_WIDTH ( 8 ),
|
||||
.DISCARD_CNT_WIDTH ( 8 ),
|
||||
.INPUT_X_RES_WIDTH ( 11 ),
|
||||
.INPUT_Y_RES_WIDTH ( 11 ),
|
||||
.OUTPUT_X_RES_WIDTH ( 11 ),
|
||||
.OUTPUT_Y_RES_WIDTH ( 11 ),
|
||||
.BUFFER_SIZE ( BUFFER_SIZE ) //Number of RAMs in RAM ring buffer
|
||||
) st_1280x1024to640x512 (
|
||||
.inputFilename( `INPUT1280x1024 ),
|
||||
.outputFilename( "out/output1280x1024to640x512.raw" ),
|
||||
|
||||
//Control
|
||||
.inputDiscardCnt( 0 ), //Number of input pixels to discard before processing data. Used for clipping
|
||||
.leftOffset( 25'h1FFF ),
|
||||
.topFracOffset( 25'h1FFF ),
|
||||
.nearestNeighbor( 0 ),
|
||||
.done ( done[3] )
|
||||
);
|
||||
|
||||
//1280x1024 to 480x384
|
||||
|
||||
scalerTest #(
|
||||
.INPUT_X_RES ( 1280-1 ),
|
||||
.INPUT_Y_RES ( 1024-1 ),
|
||||
.OUTPUT_X_RES ( 480-1 ), //Output resolution - 1
|
||||
.OUTPUT_Y_RES ( 384-1 ), //Output resolution - 1
|
||||
//.X_SCALE ( 32'h4000*2 ),
|
||||
//.Y_SCALE ( 32'h4000*2 ),
|
||||
|
||||
.DATA_WIDTH ( 8 ),
|
||||
.DISCARD_CNT_WIDTH ( 8 ),
|
||||
.INPUT_X_RES_WIDTH ( 11 ),
|
||||
.INPUT_Y_RES_WIDTH ( 11 ),
|
||||
.OUTPUT_X_RES_WIDTH ( 11 ),
|
||||
.OUTPUT_Y_RES_WIDTH ( 11 ),
|
||||
.BUFFER_SIZE ( BUFFER_SIZE ) //Number of RAMs in RAM ring buffer
|
||||
) st_1280x1024to480x384 (
|
||||
.inputFilename( `INPUT1280x1024 ),
|
||||
.outputFilename( "out/output1280x1024to480x384.raw" ),
|
||||
|
||||
//Control
|
||||
.inputDiscardCnt( 0 ), //Number of input pixels to discard before processing data. Used for clipping
|
||||
.leftOffset( 0 ),
|
||||
.topFracOffset( 0 ),
|
||||
.nearestNeighbor( 0 ),
|
||||
.done ( done[4] )
|
||||
);
|
||||
|
||||
//640x512 to 1280x1024, discarding 21
|
||||
|
||||
scalerTest #(
|
||||
.INPUT_X_RES ( 640-1 ),
|
||||
.INPUT_Y_RES ( 512-1 ),
|
||||
.OUTPUT_X_RES ( 1280-1 ), //Output resolution - 1
|
||||
.OUTPUT_Y_RES ( 1024-1 ), //Output resolution - 1
|
||||
//.X_SCALE ( 32'h4000*2 ),
|
||||
//.Y_SCALE ( 32'h4000*2 ),
|
||||
|
||||
.DATA_WIDTH ( 8 ),
|
||||
.DISCARD_CNT_WIDTH ( 8 ),
|
||||
.INPUT_X_RES_WIDTH ( 11 ),
|
||||
.INPUT_Y_RES_WIDTH ( 11 ),
|
||||
.OUTPUT_X_RES_WIDTH ( 11 ),
|
||||
.OUTPUT_Y_RES_WIDTH ( 11 ),
|
||||
.BUFFER_SIZE ( BUFFER_SIZE ) //Number of RAMs in RAM ring buffer
|
||||
) st_640x512to1280x1024_21extra (
|
||||
.inputFilename( `INPUT1280x1024_21EXTRA ),
|
||||
.outputFilename( "out/output640x512to1280x1024_21extra.raw" ),
|
||||
|
||||
//Control
|
||||
.inputDiscardCnt( 21 ), //Number of input pixels to discard before processing data. Used for clipping
|
||||
.leftOffset( 0 ),
|
||||
.topFracOffset( 0 ),
|
||||
.nearestNeighbor( 0 ),
|
||||
.done ( done[5] )
|
||||
);
|
||||
|
||||
//640x512 to 1280x1024, discarding 21
|
||||
|
||||
scalerTest #(
|
||||
.INPUT_X_RES ( 640-1 ),
|
||||
.INPUT_Y_RES ( 40-1 ),
|
||||
.OUTPUT_X_RES ( 640-1 ), //Output resolution - 1
|
||||
.OUTPUT_Y_RES ( 512-1 ), //Output resolution - 1
|
||||
.X_SCALE ( 32'h4000 * (50-1) / (640-1)-1 ),
|
||||
.Y_SCALE ( 32'h4000 * (40-1) / (512-1)-1 ),
|
||||
|
||||
.DATA_WIDTH ( 8 ),
|
||||
.DISCARD_CNT_WIDTH ( 14 ),
|
||||
.INPUT_X_RES_WIDTH ( 11 ),
|
||||
.INPUT_Y_RES_WIDTH ( 11 ),
|
||||
.OUTPUT_X_RES_WIDTH ( 11 ),
|
||||
.OUTPUT_Y_RES_WIDTH ( 11 ),
|
||||
.BUFFER_SIZE ( BUFFER_SIZE ) //Number of RAMs in RAM ring buffer
|
||||
) st_50x40to640x512clipped (
|
||||
.inputFilename( `INPUT640x512 ),
|
||||
.outputFilename( "out/output50x40to640x512clipped.raw" ),
|
||||
|
||||
//Control
|
||||
.inputDiscardCnt( 640*3 ), //Number of input pixels to discard before processing data. Used for clipping
|
||||
.leftOffset( {11'd249, 14'b0} ),
|
||||
.topFracOffset( 0 ),
|
||||
.nearestNeighbor( 0 ),
|
||||
.done ( done[6] )
|
||||
);
|
||||
|
||||
initial
|
||||
begin
|
||||
#10
|
||||
while(done != 7'b1111111)
|
||||
#10
|
||||
;
|
||||
$stop;
|
||||
end
|
||||
|
||||
|
||||
|
||||
|
||||
endmodule
|
||||
|
||||
module scalerTest #(
|
||||
parameter INPUT_X_RES = 120-1,
|
||||
parameter INPUT_Y_RES = 90-1,
|
||||
parameter OUTPUT_X_RES = 1280-1, //Output resolution - 1
|
||||
parameter OUTPUT_Y_RES = 960-1, //Output resolution - 1
|
||||
parameter X_SCALE = 32'h4000 * (INPUT_X_RES) / (OUTPUT_X_RES)-1,
|
||||
parameter Y_SCALE = 32'h4000 * (INPUT_Y_RES) / (OUTPUT_Y_RES)-1,
|
||||
|
||||
parameter DATA_WIDTH = 8,
|
||||
parameter CHANNELS = 3,
|
||||
parameter DISCARD_CNT_WIDTH = 8,
|
||||
parameter INPUT_X_RES_WIDTH = 11,
|
||||
parameter INPUT_Y_RES_WIDTH = 11,
|
||||
parameter OUTPUT_X_RES_WIDTH = 11,
|
||||
parameter OUTPUT_Y_RES_WIDTH = 11,
|
||||
parameter BUFFER_SIZE = 6 //Number of RAMs in RAM ring buffer
|
||||
)(
|
||||
input wire [50*8:0] inputFilename, outputFilename,
|
||||
|
||||
//Control
|
||||
input wire [DISCARD_CNT_WIDTH-1:0] inputDiscardCnt, //Number of input pixels to discard before processing data. Used for clipping
|
||||
input wire [INPUT_X_RES_WIDTH+14-1:0] leftOffset,
|
||||
input wire [14-1:0] topFracOffset,
|
||||
input wire nearestNeighbor,
|
||||
|
||||
output reg done
|
||||
|
||||
);
|
||||
|
||||
|
||||
reg clk;
|
||||
reg rst;
|
||||
|
||||
|
||||
reg [DATA_WIDTH*CHANNELS-1:0] dIn;
|
||||
reg dInValid;
|
||||
wire nextDin;
|
||||
reg start;
|
||||
|
||||
wire [DATA_WIDTH*CHANNELS-1:0] dOut;
|
||||
wire dOutValid;
|
||||
reg nextDout;
|
||||
|
||||
integer r, rfile, wfile;
|
||||
|
||||
initial // Clock generator
|
||||
begin
|
||||
#10 //Delay to allow filename to get here
|
||||
clk = 0;
|
||||
#5 forever #5 clk = !clk;
|
||||
end
|
||||
|
||||
initial // Reset
|
||||
begin
|
||||
done = 0;
|
||||
#10 //Delay to allow filename to get here
|
||||
rst = 0;
|
||||
#5 rst = 1;
|
||||
#4 rst = 0;
|
||||
// #50000 $stop;
|
||||
end
|
||||
|
||||
reg eof;
|
||||
reg [DATA_WIDTH*CHANNELS-1:0] readMem [0:0];
|
||||
initial // Input file read, generates dIn data
|
||||
begin
|
||||
#10 //Delay to allow filename to get here
|
||||
rfile = $fopen(inputFilename, "rb");
|
||||
|
||||
dIn = 0;
|
||||
dInValid = 0;
|
||||
start = 0;
|
||||
|
||||
#41
|
||||
start = 1;
|
||||
|
||||
#10
|
||||
start = 0;
|
||||
|
||||
#20
|
||||
r = $fread(readMem, rfile);
|
||||
dIn = readMem[0];
|
||||
|
||||
while(! $feof(rfile))
|
||||
begin
|
||||
dInValid = 1;
|
||||
|
||||
#10
|
||||
if(nextDin)
|
||||
begin
|
||||
r = $fread(readMem, rfile);
|
||||
dIn = readMem[0];
|
||||
end
|
||||
end
|
||||
|
||||
$fclose(rfile);
|
||||
end
|
||||
|
||||
//Generate nextDout request signal
|
||||
initial
|
||||
begin
|
||||
#10 //Delay to match filename arrival delay
|
||||
nextDout = 0;
|
||||
#140001
|
||||
forever
|
||||
begin
|
||||
//This can be used to slow down the read to simulate live read-out. This basically inserts H blank periods.
|
||||
#(10*(OUTPUT_X_RES+1)*4)
|
||||
nextDout = 0;
|
||||
#(10*(OUTPUT_X_RES+1))
|
||||
nextDout = 1;
|
||||
|
||||
end
|
||||
end
|
||||
|
||||
//Read dOut and write to file
|
||||
integer dOutCount;
|
||||
initial
|
||||
begin
|
||||
#10 //Delay to allow filename to get here
|
||||
wfile = $fopen(outputFilename, "wb");
|
||||
nextDout = 0;
|
||||
dOutCount = 0;
|
||||
#1
|
||||
while(dOutCount < (OUTPUT_X_RES+1) * (OUTPUT_Y_RES+1))
|
||||
begin
|
||||
#10
|
||||
if(dOutValid == 1)
|
||||
begin
|
||||
$fwrite(wfile, "%c", dOut[23:16]);
|
||||
$fwrite(wfile, "%c", dOut[15:8]);
|
||||
$fwrite(wfile, "%c", dOut[7:0]);
|
||||
dOutCount = dOutCount + 1;
|
||||
end
|
||||
end
|
||||
$fclose(wfile);
|
||||
done = 1;
|
||||
end
|
||||
|
||||
streamScaler #(
|
||||
.DATA_WIDTH( DATA_WIDTH ),
|
||||
.CHANNELS( CHANNELS ),
|
||||
.DISCARD_CNT_WIDTH( DISCARD_CNT_WIDTH ),
|
||||
.INPUT_X_RES_WIDTH( INPUT_X_RES_WIDTH ),
|
||||
.INPUT_Y_RES_WIDTH( INPUT_Y_RES_WIDTH ),
|
||||
.OUTPUT_X_RES_WIDTH( OUTPUT_X_RES_WIDTH ),
|
||||
.OUTPUT_Y_RES_WIDTH( OUTPUT_Y_RES_WIDTH ),
|
||||
.BUFFER_SIZE( BUFFER_SIZE ) //Number of RAMs in RAM ring buffer
|
||||
) scaler_inst (
|
||||
.clk( clk ),
|
||||
.rst( rst ),
|
||||
|
||||
.dIn( dIn ),
|
||||
.dInValid( dInValid ),
|
||||
.nextDin( nextDin ),
|
||||
.start( start ),
|
||||
|
||||
.dOut( dOut ),
|
||||
.dOutValid( dOutValid ),
|
||||
.nextDout( nextDout ),
|
||||
|
||||
//Control
|
||||
.inputDiscardCnt( inputDiscardCnt ), //Number of input pixels to discard before processing data. Used for clipping
|
||||
.inputXRes( INPUT_X_RES ), //Input data number of pixels per line
|
||||
.inputYRes( INPUT_Y_RES ),
|
||||
|
||||
.outputXRes( OUTPUT_X_RES ), //Resolution of output data
|
||||
.outputYRes( OUTPUT_Y_RES ),
|
||||
.xScale( X_SCALE ), //Scaling factors. Input resolution scaled by 1/xScale. Format Q4.14
|
||||
.yScale( Y_SCALE ), //Scaling factors. Input resolution scaled by 1/yScale. Format Q4.14
|
||||
|
||||
.leftOffset( leftOffset ),
|
||||
.topFracOffset( topFracOffset ),
|
||||
.nearestNeighbor( nearestNeighbor )
|
||||
);
|
||||
|
||||
endmodule
|
||||
46
isp.v
46
isp.v
|
|
@ -18,24 +18,50 @@ module isp #(
|
|||
output reg data_que, // 数据请求线，高电平：请求三个数据，直到读取完才拉低
|
||||
output reg data_line, // 新一行请求数据线，高电平：请求九个数据，直到读取完才拉低
|
||||
|
||||
// en: 输出数据有效信号，高电平有效
|
||||
output reg out_en,
|
||||
output reg [15:0] out_r,
|
||||
output reg [15:0] out_g,
|
||||
output reg [15:0] out_b
|
||||
);
|
||||
// 三通道合成RGB图像
|
||||
wire rgb_en;
|
||||
wire [15:0] im_red, im_green, im_blue;
|
||||
|
||||
demosaic2 #(IN_WIDTH, IN_HEIGHT, RAW_TYPE) CFA (
|
||||
// 任意比例缩放图像
|
||||
wire scale_in_en;
|
||||
wire scale_in_que; // scaler 请求数据
|
||||
wire [3 * COLOR_DEPTH - 1:0] scale_in_data;
|
||||
|
||||
demosaic2 #(
|
||||
.IM_WIDTH(1936),
|
||||
.IM_HEIGHT(1088),
|
||||
) CFA (
|
||||
.clk(clk),
|
||||
.reset(reset),
|
||||
.data_en(data_en),
|
||||
.data_in(data_in),
|
||||
.data_que(data_que),
|
||||
.data_line(data_line),
|
||||
.out_en(out_en),
|
||||
.out_r(out_r),
|
||||
.out_g(out_g),
|
||||
.out_b(out_b)
|
||||
.out_en(rgb_en),
|
||||
.out_r(im_red),
|
||||
.out_g(im_green),
|
||||
.out_b(im_blue)
|
||||
);
|
||||
|
||||
chanels_to_RGB merge_toRGB(
|
||||
.clk(clk),
|
||||
.reset(reset),
|
||||
.in_en(rgb_en),
|
||||
.data_in[0](im_red[11:0]),
|
||||
.data_in[1](im_green[11:0]),
|
||||
.data_in[2](im_red[11:0]),
|
||||
|
||||
.data_que(scale_que),
|
||||
.out_en(scale_en),
|
||||
.data_out(scale_in_data)
|
||||
);
|
||||
|
||||
streamScaler #(
|
||||
.DATA_WIDTH(COLOR_DEPTH),
|
||||
.CHANNELS(3),
|
||||
) scaler (
|
||||
|
||||
);
|
||||
|
||||
endmodule
|
||||
|
|
|
|||
Loading…
Reference in New Issue