Subversion Repositories motion_estimation_processor

----------------------------------------------------------------------------

--  This file is a part of the LM VHDL IP LIBRARY

--  Copyright (C) 2009 Jose Nunez-Yanez

--

--  This program is free software; you can redistribute it and/or modify

--  it under the terms of the GNU General Public License as published by

--  the Free Software Foundation; either version 2 of the License, or

--  (at your option) any later version.

--

--  See the file COPYING for the full details of the license.

--

--  The license allows free and unlimited use of the library and tools for research and education purposes. 

--  The full LM core supports many more advanced motion estimation features and it is available under a 

--  low-cost commercial license. See the readme file to learn more or contact us at 

--  eejlny@byacom.co.uk or www.byacom.co.uk

-----------------------------------------------------------------------------

-- Entity:      

-- File:        macroblock_data.vhd

-- Author:      Jose Luis Nunez 

-- Description: macroblock data 5x5 macroblocks 

------------------------------------------------------------------------------

library IEEE;

use IEEE.std_logic_1164.all;

use IEEE.Numeric_STD.all;

entity macroblock_data4 is

    port(

      clk : in std_logic;

      reset : in std_logic;

      clear : in std_logic;

      addr : in std_logic_vector (4 downto 0);

      data : out std_logic_vector (63 downto 0)

      );

end;

architecture rtl of macroblock_data4 is

signal data_int: std_logic_vector(63 downto 0);

subtype word is integer range 0 to 255;

type mem is array (0 to 255) of word;

signal memory : mem := (

16#4E#,16#4F#,16#4E#,16#4E#,16#5E#,16#4B#,16#57#,16#CB#,16#E6#,16#D7#,16#EB#,16#FF#,16#C2#,16#3C#,16#27#,16#6E#,

16#4F#,16#4E#,16#4F#,16#47#,16#4D#,16#4D#,16#3A#,16#6C#,16#84#,16#9D#,16#C9#,16#DA#,16#ED#,16#A2#,16#24#,16#62#,

16#4A#,16#4E#,16#4E#,16#37#,16#42#,16#42#,16#41#,16#61#,16#53#,16#5A#,16#63#,16#4C#,16#B6#,16#FF#,16#53#,16#57#,

16#4E#,16#53#,16#2F#,16#40#,16#7E#,16#34#,16#48#,16#8F#,16#68#,16#53#,16#44#,16#32#,16#4F#,16#BB#,16#C5#,16#9B#,

16#56#,16#3E#,16#2F#,16#7A#,16#99#,16#4D#,16#51#,16#7C#,16#6E#,16#6E#,16#74#,16#7C#,16#57#,16#53#,16#B4#,16#EA#,

16#42#,16#29#,16#69#,16#91#,16#6F#,16#6C#,16#6D#,16#6A#,16#6B#,16#6F#,16#6E#,16#6D#,16#71#,16#63#,16#5D#,16#A9#,

16#2C#,16#4E#,16#8E#,16#77#,16#62#,16#73#,16#6F#,16#66#,16#6A#,16#6B#,16#6A#,16#6A#,16#6F#,16#6E#,16#57#,16#48#,

16#47#,16#85#,16#7E#,16#63#,16#67#,16#6B#,16#6A#,16#69#,16#67#,16#69#,16#6B#,16#6B#,16#69#,16#6D#,16#70#,16#4E#,

16#7C#,16#88#,16#66#,16#68#,16#65#,16#68#,16#6A#,16#6A#,16#68#,16#6A#,16#6C#,16#69#,16#69#,16#69#,16#6E#,16#75#,

16#8A#,16#6A#,16#68#,16#6B#,16#68#,16#6B#,16#69#,16#69#,16#6D#,16#6C#,16#6B#,16#69#,16#6A#,16#6C#,16#69#,16#6D#,

16#70#,16#62#,16#6A#,16#69#,16#69#,16#6D#,16#6A#,16#67#,16#68#,16#6A#,16#6A#,16#6A#,16#6B#,16#6B#,16#6B#,16#6A#,

16#65#,16#64#,16#65#,16#67#,16#66#,16#6A#,16#6A#,16#67#,16#67#,16#6A#,16#68#,16#68#,16#68#,16#6A#,16#69#,16#6A#,

16#64#,16#67#,16#67#,16#68#,16#67#,16#67#,16#69#,16#69#,16#6C#,16#6C#,16#68#,16#69#,16#69#,16#6C#,16#6A#,16#69#,

16#6A#,16#6A#,16#68#,16#67#,16#67#,16#66#,16#68#,16#69#,16#6D#,16#6C#,16#6A#,16#6B#,16#6A#,16#6B#,16#6C#,16#6B#,

16#68#,16#65#,16#65#,16#66#,16#66#,16#67#,16#69#,16#6A#,16#68#,16#69#,16#6C#,16#6B#,16#6B#,16#68#,16#69#,16#6C#,

16#66#,16#65#,16#65#,16#67#,16#67#,16#66#,16#67#,16#68#,16#66#,16#69#,16#6A#,16#6B#,16#6C#,16#68#,16#67#,16#68#

);

--attribute syn_romstyle : string;

--attribute syn_romstyle of memory : signal is "logic";

begin

  p : process(addr)

        variable vaddr1 : integer range 0 to 255;

        variable vaddr2 : integer range 0 to 255;

        variable vaddr3 : integer range 0 to 255;

        variable vaddr4 : integer range 0 to 255;

        variable vaddr5 : integer range 0 to 255;

        variable vaddr6 : integer range 0 to 255;

        variable vaddr7 : integer range 0 to 255;

        variable vaddr8 : integer range 0 to 255;

        begin

                        vaddr1 := To_integer(unsigned(addr&"000"));

                        vaddr2 := To_integer(unsigned(addr&"001"));

                        vaddr3 := To_integer(unsigned(addr&"010"));

                        vaddr4 := To_integer(unsigned(addr&"011"));

                        vaddr5 := To_integer(unsigned(addr&"100"));

                        vaddr6 := To_integer(unsigned(addr&"101"));

                        vaddr7 := To_integer(unsigned(addr&"110"));

                        vaddr8 := To_integer(unsigned(addr&"111"));

                        data_int <= (std_logic_vector(to_unsigned(memory(vaddr1),8)) &  std_logic_vector(to_unsigned(memory(vaddr2),8)) &  std_logic_vector(to_unsigned(memory(vaddr3),8)) & std_logic_vector(to_unsigned(memory(vaddr4),8)) & std_logic_vector(to_unsigned(memory(vaddr5),8)) & std_logic_vector(to_unsigned(memory(vaddr6),8)) & std_logic_vector(to_unsigned(memory(vaddr7),8)) & std_logic_vector(to_unsigned(memory(vaddr8),8)));

                --      data_int(23 downto 16) <= std_logic_vector(to_unsigned(memory(vaddr2),8));

                --      data_int(15 downto 8) <= std_logic_vector(to_unsigned(memory(vaddr3),8));

                --      data_int(7 downto 0) <= std_logic_vector(to_unsigned(memory(vaddr4),8));

  end process;

  ff: process(clear,clk)

  begin

        if (clear = '1') then

                        data <= (others => '0');

        elsif rising_edge(clk) then

                        if (reset = '1') then

                             data <= (others => '0');

                        else

                             data <= data_int;

                        end if;

        end if;

  end process;

end rtl;