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[/] [mkjpeg/] [trunk/] [tb/] [vhdl/] [GPL_V2_Image_pkg.vhd] - Rev 34
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----------------------------------------------------------------- -- Copyright (c) 1997 Ben Cohen. All rights reserved. -- email: vhdlcohen@aol.com -- -- 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. -- This program 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 General Public License for more details. -- UPDATE: 8/22/02 -- Add to HexImage the supply of hex 'Z' -- in the case statement when a binary set of 4 bits = "ZZZZ" --------------------------------------------------------------- -- Note: 2006.08.11: (FB): modified package name to fit the structure of the -- project and to highlight the license. library IEEE; use IEEE.Std_Logic_1164.all; use IEEE.Std_Logic_TextIO.all; use ieee.numeric_std.all; -- use IEEE.Std_Logic_Arith.all; library Std; use STD.TextIO.all; --package Image_Pkg is package GPL_V2_Image_Pkg is function Image(In_Image : Time) return String; function Image(In_Image : Bit) return String; function Image(In_Image : Bit_Vector) return String; function Image(In_Image : Integer) return String; function Image(In_Image : Real) return String; function Image(In_Image : Std_uLogic) return String; function Image(In_Image : Std_uLogic_Vector) return String; function Image(In_Image : Std_Logic_Vector) return String; function Image(In_Image : Signed) return String; function Image(In_Image : UnSigned) return String; function HexImage(InStrg : String) return String; function HexImage(In_Image : Bit_Vector) return String; function HexImage(In_Image : Std_uLogic_Vector) return String; function HexImage(In_Image : Std_Logic_Vector) return String; function HexImage(In_Image : Signed) return String; function HexImage(In_Image : UnSigned) return String; function DecImage(In_Image : Bit_Vector) return String; function DecImage(In_Image : Std_uLogic_Vector) return String; function DecImage(In_Image : Std_Logic_Vector) return String; function DecImage(In_Image : Signed) return String; function DecImage(In_Image : UnSigned) return String; end GPL_V2_Image_Pkg; --end Image_Pkg; --package body Image_Pkg is package body GPL_V2_Image_Pkg is function Image(In_Image : Time) return String is variable L : Line; -- access type variable W : String(1 to 14) := (others => ' '); -- Long enough to hold a time string begin -- the WRITE procedure creates an object with "NEW". -- L is passed as an output of the procedure. Std.TextIO.WRITE(L, in_image); -- Copy L.all onto W W(L.all'range) := L.all; Deallocate(L); return W; end Image; function Image(In_Image : Bit) return String is variable L : Line; -- access type variable W : String(1 to 3) := (others => ' '); begin Std.TextIO.WRITE(L, in_image); W(L.all'range) := L.all; Deallocate(L); return W; end Image; function Image(In_Image : Bit_Vector) return String is variable L : Line; -- access type variable W : String(1 to In_Image'length) := (others => ' '); begin Std.TextIO.WRITE(L, in_image); W(L.all'range) := L.all; Deallocate(L); return W; end Image; function Image(In_Image : Integer) return String is variable L : Line; -- access type variable W : String(1 to 32) := (others => ' '); -- Long enough to hold a time string begin Std.TextIO.WRITE(L, in_image); W(L.all'range) := L.all; Deallocate(L); return W; end Image; function Image(In_Image : Real) return String is variable L : Line; -- access type variable W : String(1 to 32) := (others => ' '); -- Long enough to hold a time string begin Std.TextIO.WRITE(L, in_image); W(L.all'range) := L.all; Deallocate(L); return W; end Image; function Image(In_Image : Std_uLogic) return String is variable L : Line; -- access type variable W : String(1 to 3) := (others => ' '); begin IEEE.Std_Logic_Textio.WRITE(L, in_image); W(L.all'range) := L.all; Deallocate(L); return W; end Image; function Image(In_Image : Std_uLogic_Vector) return String is variable L : Line; -- access type variable W : String(1 to In_Image'length) := (others => ' '); begin IEEE.Std_Logic_Textio.WRITE(L, in_image); W(L.all'range) := L.all; Deallocate(L); return W; end Image; function Image(In_Image : Std_Logic_Vector) return String is variable L : Line; -- access type variable W : String(1 to In_Image'length) := (others => ' '); begin IEEE.Std_Logic_TextIO.WRITE(L, In_Image); W(L.all'range) := L.all; Deallocate(L); return W; end Image; function Image(In_Image : Signed) return String is begin return Image(Std_Logic_Vector(In_Image)); end Image; function Image(In_Image : UnSigned) return String is begin return Image(Std_Logic_Vector(In_Image)); end Image; function HexImage(InStrg : String) return String is subtype Int03_Typ is Integer range 0 to 3; variable Result : string(1 to ((InStrg'length - 1)/4)+1) := (others => '0'); variable StrTo4 : string(1 to Result'length * 4) := (others => '0'); variable MTspace : Int03_Typ; -- Empty space to fill in variable Str4 : String(1 to 4); variable Group_v : Natural := 0; begin MTspace := Result'length * 4 - InStrg'length; StrTo4(MTspace + 1 to StrTo4'length) := InStrg; -- padded with '0' Cnvrt_Lbl : for I in Result'range loop Group_v := Group_v + 4; -- identifies end of bit # in a group of 4 Str4 := StrTo4(Group_v - 3 to Group_v); -- get next 4 characters case Str4 is when "0000" => Result(I) := '0'; when "0001" => Result(I) := '1'; when "0010" => Result(I) := '2'; when "0011" => Result(I) := '3'; when "0100" => Result(I) := '4'; when "0101" => Result(I) := '5'; when "0110" => Result(I) := '6'; when "0111" => Result(I) := '7'; when "1000" => Result(I) := '8'; when "1001" => Result(I) := '9'; when "1010" => Result(I) := 'A'; when "1011" => Result(I) := 'B'; when "1100" => Result(I) := 'C'; when "1101" => Result(I) := 'D'; when "1110" => Result(I) := 'E'; when "1111" => Result(I) := 'F'; when "ZZZZ" => Result(I) := 'Z'; -- added 8/23/02 when others => Result(I) := 'X'; end case; -- Str4 end loop Cnvrt_Lbl; return Result; end HexImage; function HexImage(In_Image : Bit_Vector) return String is begin return HexImage(Image(In_Image)); end HexImage; function HexImage(In_Image : Std_uLogic_Vector) return String is begin return HexImage(Image(In_Image)); end HexImage; function HexImage(In_Image : Std_Logic_Vector) return String is begin return HexImage(Image(In_Image)); end HexImage; function HexImage(In_Image : Signed) return String is begin return HexImage(Image(In_Image)); end HexImage; function HexImage(In_Image : UnSigned) return String is begin return HexImage(Image(In_Image)); end HexImage; function DecImage(In_Image : Bit_Vector) return String is variable In_Image_v : Bit_Vector(In_Image'length downto 1) := In_Image; begin if In_Image'length > 31 then assert False report "Number too large for Integer, clipping to 31 bits" severity Warning; return Image(To_integer (Unsigned(To_StdLogicVector (In_Image_v(31 downto 1))))); else return Image(To_integer(Unsigned(To_StdLogicVector(In_Image)))); end if; end DecImage; function DecImage(In_Image : Std_uLogic_Vector) return String is variable In_Image_v : Std_uLogic_Vector(In_Image'length downto 1) := In_Image; begin if In_Image'length > 31 then assert False report "Number too large for Integer, clipping to 31 bits" severity Warning; return Image(To_integer(Unsigned(In_Image_v(31 downto 1)))); else return Image(To_integer(Unsigned(In_Image))); end if; end DecImage; function DecImage(In_Image : Std_Logic_Vector) return String is variable In_Image_v : Std_Logic_Vector(In_Image'length downto 1) := In_Image; begin if In_Image'length > 31 then assert False report "Number too large for Integer, clipping to 31 bits" severity Warning; return Image(To_integer(Unsigned(In_Image_v(31 downto 1)))); else return Image(To_integer(Unsigned(In_Image))); end if; end DecImage; function DecImage(In_Image : Signed) return String is variable In_Image_v : Signed(In_Image'length downto 1) := In_Image; begin if In_Image'length > 31 then assert False report "Number too large for Integer, clipping to 31 bits" severity Warning; return Image(To_integer(In_Image_v(31 downto 1))); else return Image(To_integer(In_Image)); end if; end DecImage; function DecImage(In_Image : UnSigned) return String is variable In_Image_v : UnSigned(In_Image'length downto 1) := In_Image; begin if In_Image'length > 31 then assert False report "Number too large for Integer, clipping to 31 bits" severity Warning; return Image(To_integer(In_Image_v(31 downto 1))); else return Image(To_integer(In_Image)); end if; end DecImage; end GPL_V2_Image_Pkg; --end Image_Pkg;
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