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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 : natural;
NBR_OF_CHROMA : natural;
NBR_OF_ROW : natural;
NBR_OF_COL : natural;
package local_pixel_column_pkg is new pixel_column_pkg generic map (<>)
);
use local_pixel_column_pkg.all;
type TYPE_PIXEL_MATRIX is array (NBR_OF_COL-1 downto 0) of TYPE_PIXEL_COLUMN;
-- 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_vector : in std_logic_vector(NBR_OF_COL*NBR_OF_ROW*NBR_OF_CHROMA*NBITS-1 downto 0))
return TYPE_PIXEL_MATRIX;
end package pixel_matrix_pkg;
package body pixel_matrix_pkg is
function std_logic_vector_to_pixel_matrix( in_vector : in std_logic_vector(NBR_OF_COL*NBR_OF_ROW*NBR_OF_CHROMA*NBITS-1 downto 0))
return TYPE_PIXEL_MATRIX is
variable pixel_matrix : TYPE_PIXEL_MATRIX;
begin
for col in 0 to NBR_OF_COL-1 loop
pixel_matrix(col) := std_logic_vector_to_pixel_column(in_vector((col+1)*NBR_OF_ROW*NBR_OF_CHROMA*NBITS-1 downto col*NBR_OF_ROW*NBR_OF_CHROMA*NBITS));
end loop;
return pixel_matrix;
end function std_logic_vector_to_pixel_matrix;
end package body pixel_matrix_pkg;
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