jpeg_decode.v

jpeg格式到bmp格式的硬件实现

//---------------------------------------------------------------------------
// File Name   : jpeg_decode.v
// Module Name : jpeg_decode
// Description : JPEG Deocder top module
// Project     : JPEG Decoder
// Belong to   : 
// Author      : H.Ishihara
// E-Mail      : [e-mail]
// HomePage    : http://www.sweetcafe.jp/
// Date        : 2007/04/11
// Rev.        : 2.0
//---------------------------------------------------------------------------
// Rev. Date       Description
//---------------------------------------------------------------------------
// 1.01 2006/10/01 1st Release
// 1.02 2006/10/04 add ProcessIdle register
// 2.00 2007/04/11 
//---------------------------------------------------------------------------
`timescale 1ps / 1ps

module jpeg_decode
  (
   rst,
   clk,

   // From FIFO
   DataIn,
   DataInEnable,
   DataInRead,

   JpegDecodeIdle,  // Deocdeer Process Idle(1:Idle, 0:Run)

   OutEnable,
   OutWidth,
   OutHeight,
   OutPixelX,
   OutPixelY,
   OutR,
   OutG,
   OutB

   );

   input          rst;
   input          clk;
   
   input [31:0]   DataIn;
   input          DataInEnable;
   output         DataInRead;
   
   output         JpegDecodeIdle;
   
   output         OutEnable;
   output [15:0]  OutWidth;
   output [15:0]  OutHeight;
   output [15:0]  OutPixelX;
   output [15:0]  OutPixelY;
   output [7:0]   OutR;
   output [7:0]   OutG;
   output [7:0]   OutB;

   wire [31:0]    JpegData;
   wire           JpegDataEnable;
   wire			JpegDecodeIdle;

   wire           UseBit;
   wire [6:0]     UseWidth;
   wire           UseByte;
   wire           UseWord;
   
   wire 	  ImageEnable;
   wire 	  EnableFF00;
   wire		DecodeFinish;

//   reg 		  ProcessIdle;

   //--------------------------------------------------------------------------
   // Read JPEG Data from FIFO
   //--------------------------------------------------------------------------
   jpeg_regdata u_jpeg_regdata(
			       .rst(rst),
			       .clk(clk),
			       
			       // Read Data
			       .DataIn        ( DataIn              ),
			       .DataInEnable  ( DataInEnable        ),
			       .DataInRead    ( DataInRead          ),
			       
			       // DataOut
			       .DataOut       ( JpegData            ),
			       .DataOutEnable ( JpegDataEnable      ),
			       
                               //
                               .ImageEnable   ( EnableFF00          ),
 					.ProcessIdle	( JpegDecodeIdle		),
			       
			       // UseData
			       .UseBit        ( UseBit              ),
			       .UseWidth      ( UseWidth            ),
			       .UseByte       ( UseByte             ),
			       .UseWord       ( UseWord             )
			       );

   //--------------------------------------------------------------------------
   // Read Maker from Jpeg Data
   //--------------------------------------------------------------------------
   wire 	  DqtEnable;
   wire 	  DqtTable;
   wire [5:0] 	  DqtCount;
   wire [7:0] 	  DqtData;
   
   wire 	  DhtEnable;
   wire [1:0] 	  DhtTable;
   wire [7:0] 	  DhtCount;
   wire [7:0] 	  DhtData;
   
   //
   wire 	  HaffumanEnable;
   wire [1:0] 	  HaffumanTable;
   wire [3:0] 	  HaffumanCount;
   wire [15:0] 	  HaffumanData;
   wire [7:0] 	  HaffumanStart;

   wire [11:0] 	  JpegBlockWidth;

   jpeg_decode_fsm u_jpeg_decode_fsm(
				     .rst(rst),
				     .clk(clk),
				     
				     // From FIFO
				     .DataInEnable    ( JpegDataEnable  ),
				     .DataIn          ( JpegData        ),
				     
				     .JpegDecodeIdle  ( JpegDecodeIdle  ),
				     
				     .OutWidth        ( OutWidth        ),
				     .OutHeight       ( OutHeight       ),
				     .OutBlockWidth   ( JpegBlockWidth  ),
				     .OutEnable			( OutEnable		),
				     .OutPixelX			( OutPixelX		),
				     .OutPixelY			( OutPixelY		),
				     
				     //
				     .DqtEnable       ( DqtEnable       ),
				     .DqtTable        ( DqtTable        ),
				     .DqtCount        ( DqtCount        ),
				     .DqtData         ( DqtData         ),
				   
				     //
				     .DhtEnable       ( DhtEnable       ),
				     .DhtTable        ( DhtTable        ),
				     .DhtCount        ( DhtCount        ),
				     .DhtData         ( DhtData         ),
				     
				     //
				     .HaffumanEnable  ( HaffumanEnable  ),
				     .HaffumanTable   ( HaffumanTable   ),
				     .HaffumanCount   ( HaffumanCount   ),
				     .HaffumanData    ( HaffumanData    ),
				     .HaffumanStart   ( HaffumanStart   ),
				     
				     //
				     .ImageEnable     ( ImageEnable     ),
				     .ImageEnd        ( DecodeFinish    ),
				     .EnableFF00      ( EnableFF00      ),
				     
				     //
				     .UseByte         ( UseByte         ),
				     .UseWord         ( UseWord         )
				     );

   
   wire           HmDecEnable;
   wire [2:0]     HmDecColor;

   wire 	  HmDecSel;
   wire 	  HmDecRelease;
   
   wire [15:0]    Hm00Data;
   wire [15:0]    Hm01Data;
   wire [15:0]    Hm02Data;
   wire [15:0]    Hm03Data;
   wire [15:0]    Hm04Data;
   wire [15:0]    Hm05Data;
   wire [15:0]    Hm06Data;
   wire [15:0]    Hm07Data;
   wire [15:0]    Hm08Data;
   wire [15:0]    Hm09Data;
   wire [15:0]    Hm10Data;
   wire [15:0]    Hm11Data;
   wire [15:0]    Hm12Data;
   wire [15:0]    Hm13Data;
   wire [15:0]    Hm14Data;
   wire [15:0]    Hm15Data;
   wire [15:0]    Hm16Data;
   wire [15:0]    Hm17Data;
   wire [15:0]    Hm18Data;
   wire [15:0]    Hm19Data;
   wire [15:0]    Hm20Data;
   wire [15:0]    Hm21Data;
   wire [15:0]    Hm22Data;
   wire [15:0]    Hm23Data;
   wire [15:0]    Hm24Data;
   wire [15:0]    Hm25Data;
   wire [15:0]    Hm26Data;
   wire [15:0]    Hm27Data;
   wire [15:0]    Hm28Data;
   wire [15:0]    Hm29Data;
   wire [15:0]    Hm30Data;
   wire [15:0]    Hm31Data;
   wire [15:0]    Hm32Data;
   wire [15:0]    Hm33Data;
   wire [15:0]    Hm34Data;
   wire [15:0]    Hm35Data;
   wire [15:0]    Hm36Data;
   wire [15:0]    Hm37Data;
   wire [15:0]    Hm38Data;
   wire [15:0]    Hm39Data;
   wire [15:0]    Hm40Data;
   wire [15:0]    Hm41Data;
   wire [15:0]    Hm42Data;
   wire [15:0]    Hm43Data;
   wire [15:0]    Hm44Data;
   wire [15:0]    Hm45Data;
   wire [15:0]    Hm46Data;
   wire [15:0]    Hm47Data;
   wire [15:0]    Hm48Data;
   wire [15:0]    Hm49Data;
   wire [15:0]    Hm50Data;
   wire [15:0]    Hm51Data;
   wire [15:0]    Hm52Data;
   wire [15:0]    Hm53Data;
   wire [15:0]    Hm54Data;
   wire [15:0]    Hm55Data;
   wire [15:0]    Hm56Data;
   wire [15:0]    Hm57Data;
   wire [15:0]    Hm58Data;
   wire [15:0]    Hm59Data;