jpeg_dqt.v

jpeg格式到bmp格式的硬件实现

//---------------------------------------------------------------------------
// File Name   : jpeg_dqt.v
// Module Name : jpeg_dqt
// Description : DQT spcae
// Project     : JPEG Decoder
// Belong to   : 
// Author      : H.Ishihara
// E-Mail      : [e-mail]
// HomePage    : http://www.sweetcafe.jp/
// Date        : 2006/10/01
// Rev.        : 1.1
//---------------------------------------------------------------------------
// Rev. Date       Description
//---------------------------------------------------------------------------
// 1.01 2006/10/01 1st Release
//---------------------------------------------------------------------------
// $Id: 
//---------------------------------------------------------------------------
`timescale 1ps / 1ps

module jpeg_dqt
  (
   rst,
   clk,

   DataInEnable,
   DataInColor,
   DataInCount,
   DataIn,

   TableColor,
   TableNumber,
   TableData
 );

   input        rst;
   input 	clk;

   input        DataInEnable;
   input  	DataInColor;
   input [5:0] 	DataInCount;
   input [7:0] 	DataIn;

   input        TableColor;
   input  [5:0] TableNumber;
   output [7:0] TableData;

   // RAM
   reg [7:0]    DQT_Y [0:63];
   reg [7:0]    DQT_C [0:63];

   // RAM
   always @(posedge clk)
     begin
        if(DataInEnable ==1'b1 && DataInColor ==1'b0) begin
           DQT_Y[DataInCount] <= DataIn;
        end
        if(DataInEnable ==1'b1 && DataInColor ==1'b1) begin
           DQT_C[DataInCount] <= DataIn;
        end
     end

   reg [7:0] TableDataY;
   reg [7:0] TableDataC;

   // RAM out
   always @(posedge clk) begin
      TableDataY <= DQT_Y[TableNumber];
      TableDataC <= DQT_C[TableNumber];
   end

   // Selector
   assign TableData = (TableColor)?TableDataC:TableDataY;
   
endmodule // jpeg_dqt