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library ieee;
use ieee.std_logic_1164.all;
use ieee.numeric_std.all;
use work.pixel_column_pkg;
package pixel_matrix_pkg is
generic(
NBITS_IN : natural;
NBR_OF_CHROMA_IN : natural;
NBR_OF_ROW_IN : natural;
NBR_OF_COL_IN : natural;
NBITS_OUT : natural;
NBR_OF_CHROMA_OUT : natural;
NBR_OF_ROW_OUT : natural;
NBR_OF_COL_OUT : natural;
package local_pixel_column_pkg is new pixel_column_pkg generic map (<>)
);
use local_pixel_column_pkg.all;
type TYPE_PIXEL_MATRIX_IN is array (NBR_OF_COL_IN-1 downto 0) of TYPE_PIXEL_COLUMN_IN;
type TYPE_PIXEL_MATRIX_OUT is array (NBR_OF_COL_OUT-1 downto 0) of TYPE_PIXEL_COLUMN_OUT;
-- Note: this pkgs is used to propagate the functions that where defined for a (N x 1) array of pixel
-- to a (N x M) array of pixel
function std_logic_vector_to_pixel_matrix_in( in_vector : in std_logic_vector(NBR_OF_COL_IN*NBR_OF_ROW_IN*NBR_OF_CHROMA_IN*NBITS_IN-1 downto 0))
return TYPE_PIXEL_MATRIX_IN;
function pixel_matrix_out_to_std_logic_vector( out_pixel_matrix : in TYPE_PIXEL_MATRIX_OUT)
return std_logic_vector;
function "not" ( pixel_matrix_in : in TYPE_PIXEL_MATRIX_IN)
return TYPE_PIXEL_MATRIX_OUT;
end package pixel_matrix_pkg;
package body pixel_matrix_pkg is
function std_logic_vector_to_pixel_matrix_in( in_vector : in std_logic_vector(NBR_OF_COL_IN*NBR_OF_ROW_IN*NBR_OF_CHROMA_IN*NBITS_IN-1 downto 0))
return TYPE_PIXEL_MATRIX_IN is
variable pixel_matrix_in : TYPE_PIXEL_MATRIX_IN;
begin
for col in 0 to NBR_OF_COL_IN-1 loop
pixel_matrix_in(col) := std_logic_vector_to_pixel_column_in(in_vector((col+1)*NBR_OF_ROW_IN*NBR_OF_CHROMA_IN*NBITS_IN-1 downto col*NBR_OF_ROW_OUT*NBR_OF_CHROMA_IN*NBITS_IN));
end loop;
return pixel_matrix_in;
end function std_logic_vector_to_pixel_matrix_in;
function pixel_matrix_out_to_std_logic_vector( out_pixel_matrix : in TYPE_PIXEL_MATRIX_OUT)
return std_logic_vector is
variable out_vector : std_logic_vector(NBR_OF_COL_OUT*NBR_OF_ROW_OUT*NBR_OF_CHROMA_OUT*NBITS_OUT-1 downto 0);
begin
for col in 0 to NBR_OF_COL_OUT-1 loop
out_vector(((col+1)*NBR_OF_ROW_IN*NBR_OF_CHROMA_IN)*NBITS_IN-1 downto col*NBR_OF_ROW_OUT*NBR_OF_CHROMA_IN*NBITS_IN) := pixel_column_out_to_std_logic_vector(out_pixel_matrix(col));
end loop;
return out_vector;
end function pixel_matrix_out_to_std_logic_vector;
function "not" ( pixel_matrix_in : in TYPE_PIXEL_MATRIX_IN)
return TYPE_PIXEL_MATRIX_OUT is
variable pixel_matrix_out : TYPE_PIXEL_MATRIX_OUT;
begin
for index in 0 to NBR_OF_COL_IN-1 loop
pixel_matrix_out(index) := not pixel_matrix_in(index);
end loop;
return pixel_matrix_out;
end function "not";
end package body pixel_matrix_pkg;
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