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library ieee;
use ieee.std_logic_1164.all;
use ieee.numeric_std.all;
package pixel_pkg is
generic(
NBITS : natural;
NBR_OF_CHROMA : natural
);
subtype CHROMA is unsigned(NBITS-1 downto 0);
type TYPE_PIXEL is array (NBR_OF_CHROMA-1 downto 0) of CHROMA;
function std_logic_vector_to_pixel
(in_vector : in std_logic_vector(NBR_OF_CHROMA*NBITS-1 downto 0))
return TYPE_PIXEL;
end package pixel_pkg;
package body pixel_pkg is
function std_logic_vector_to_pixel
( in_vector : in std_logic_vector(NBR_OF_CHROMA*NBITS-1 downto 0))
return TYPE_PIXEL is
variable pixel : TYPE_PIXEL;
begin
for chroma in 0 to NBR_OF_CHROMA -1 loop
pixel(chroma) := unsigned(in_vector((chroma+1)*NBITS-1 downto chroma*NBITS));
end loop;
return pixel;
end function std_logic_vector_to_pixel;
end package body pixel_pkg;
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