inter_pred_sliding_window.v

a H.264/AVC Baseline Decoder

//--------------------------------------------------------------------------------------------------
// Design    : nova
// Author(s) : Ke Xu
// Email	   : [e-mail]
// File      : Inter_pred_sliding_window.v
// Generated : Oct 25, 2005
// Copyright (C) 2008 Ke Xu                
//-------------------------------------------------------------------------------------------------
// Description 
// Prepare the appropriate registers for Inter prediction (luma & chroma) 
// 1)Luma:horizontal window 6x9,vertical window 1x9
// 2)Chroma:window 2x2
//-------------------------------------------------------------------------------------------------

// synopsys translate_off
`include "timescale.v"
// synopsys translate_on
`include "nova_defines.v"

module Inter_pred_sliding_window (IsInterLuma,IsInterChroma,Is_InterChromaCopy,mv_below8x8_curr,
	pos_FracL,blk4x4_rec_counter_1to0,blk4x4_inter_calculate_counter,
	Inter_ref_00_00,Inter_ref_01_00,Inter_ref_02_00,Inter_ref_03_00,Inter_ref_04_00,Inter_ref_05_00,
	Inter_ref_06_00,Inter_ref_07_00,Inter_ref_08_00,Inter_ref_09_00,Inter_ref_10_00,Inter_ref_11_00,Inter_ref_12_00,
	Inter_ref_00_01,Inter_ref_01_01,Inter_ref_02_01,Inter_ref_03_01,Inter_ref_04_01,Inter_ref_05_01,
	Inter_ref_06_01,Inter_ref_07_01,Inter_ref_08_01,Inter_ref_09_01,Inter_ref_10_01,Inter_ref_11_01,Inter_ref_12_01,
	Inter_ref_00_02,Inter_ref_01_02,Inter_ref_02_02,Inter_ref_03_02,Inter_ref_04_02,Inter_ref_05_02,
	Inter_ref_06_02,Inter_ref_07_02,Inter_ref_08_02,Inter_ref_09_02,Inter_ref_10_02,Inter_ref_11_02,Inter_ref_12_02,
	Inter_ref_00_03,Inter_ref_01_03,Inter_ref_02_03,Inter_ref_03_03,Inter_ref_04_03,Inter_ref_05_03,
	Inter_ref_06_03,Inter_ref_07_03,Inter_ref_08_03,Inter_ref_09_03,Inter_ref_10_03,Inter_ref_11_03,Inter_ref_12_03,
	Inter_ref_00_04,Inter_ref_01_04,Inter_ref_02_04,Inter_ref_03_04,Inter_ref_04_04,Inter_ref_05_04,
	Inter_ref_06_04,Inter_ref_07_04,Inter_ref_08_04,Inter_ref_09_04,Inter_ref_10_04,Inter_ref_11_04,Inter_ref_12_04,
	Inter_ref_00_05,Inter_ref_01_05,Inter_ref_02_05,Inter_ref_03_05,Inter_ref_04_05,Inter_ref_05_05,
	Inter_ref_06_05,Inter_ref_07_05,Inter_ref_08_05,Inter_ref_09_05,Inter_ref_10_05,Inter_ref_11_05,Inter_ref_12_05,
	Inter_ref_00_06,Inter_ref_01_06,Inter_ref_02_06,Inter_ref_03_06,Inter_ref_04_06,Inter_ref_05_06,
	Inter_ref_06_06,Inter_ref_07_06,Inter_ref_08_06,Inter_ref_09_06,Inter_ref_10_06,Inter_ref_11_06,Inter_ref_12_06,
	Inter_ref_00_07,Inter_ref_01_07,Inter_ref_02_07,Inter_ref_03_07,Inter_ref_04_07,Inter_ref_05_07,
	Inter_ref_06_07,Inter_ref_07_07,Inter_ref_08_07,Inter_ref_09_07,Inter_ref_10_07,Inter_ref_11_07,Inter_ref_12_07,
	Inter_ref_00_08,Inter_ref_01_08,Inter_ref_02_08,Inter_ref_03_08,Inter_ref_04_08,Inter_ref_05_08,
	Inter_ref_06_08,Inter_ref_07_08,Inter_ref_08_08,Inter_ref_09_08,Inter_ref_10_08,Inter_ref_11_08,Inter_ref_12_08,
	Inter_ref_00_09,Inter_ref_01_09,Inter_ref_02_09,Inter_ref_03_09,Inter_ref_04_09,Inter_ref_05_09,
	Inter_ref_06_09,Inter_ref_07_09,Inter_ref_08_09,Inter_ref_09_09,Inter_ref_10_09,Inter_ref_11_09,Inter_ref_12_09,
	Inter_ref_00_10,Inter_ref_01_10,Inter_ref_02_10,Inter_ref_03_10,Inter_ref_04_10,Inter_ref_05_10,
	Inter_ref_06_10,Inter_ref_07_10,Inter_ref_08_10,Inter_ref_09_10,Inter_ref_10_10,Inter_ref_11_10,Inter_ref_12_10,
	Inter_ref_00_11,Inter_ref_01_11,Inter_ref_02_11,Inter_ref_03_11,Inter_ref_04_11,Inter_ref_05_11,
	Inter_ref_06_11,Inter_ref_07_11,Inter_ref_08_11,Inter_ref_09_11,Inter_ref_10_11,Inter_ref_11_11,Inter_ref_12_11,
	Inter_ref_00_12,Inter_ref_01_12,Inter_ref_02_12,Inter_ref_03_12,Inter_ref_04_12,Inter_ref_05_12,
	Inter_ref_06_12,Inter_ref_07_12,Inter_ref_08_12,Inter_ref_09_12,Inter_ref_10_12,Inter_ref_11_12,Inter_ref_12_12, 
	
	Inter_pix_copy0,Inter_pix_copy1,Inter_pix_copy2,Inter_pix_copy3,
	Inter_H_window_0_0,Inter_H_window_1_0,Inter_H_window_2_0,Inter_H_window_3_0,Inter_H_window_4_0,Inter_H_window_5_0,
	Inter_H_window_0_1,Inter_H_window_1_1,Inter_H_window_2_1,Inter_H_window_3_1,Inter_H_window_4_1,Inter_H_window_5_1,
	Inter_H_window_0_2,Inter_H_window_1_2,Inter_H_window_2_2,Inter_H_window_3_2,Inter_H_window_4_2,Inter_H_window_5_2,
	Inter_H_window_0_3,Inter_H_window_1_3,Inter_H_window_2_3,Inter_H_window_3_3,Inter_H_window_4_3,Inter_H_window_5_3,
	Inter_H_window_0_4,Inter_H_window_1_4,Inter_H_window_2_4,Inter_H_window_3_4,Inter_H_window_4_4,Inter_H_window_5_4,
	Inter_H_window_0_5,Inter_H_window_1_5,Inter_H_window_2_5,Inter_H_window_3_5,Inter_H_window_4_5,Inter_H_window_5_5,
	Inter_H_window_0_6,Inter_H_window_1_6,Inter_H_window_2_6,Inter_H_window_3_6,Inter_H_window_4_6,Inter_H_window_5_6,
	Inter_H_window_0_7,Inter_H_window_1_7,Inter_H_window_2_7,Inter_H_window_3_7,Inter_H_window_4_7,Inter_H_window_5_7,
	Inter_H_window_0_8,Inter_H_window_1_8,Inter_H_window_2_8,Inter_H_window_3_8,Inter_H_window_4_8,Inter_H_window_5_8,
	Inter_V_window_0,Inter_V_window_1,Inter_V_window_2,Inter_V_window_3,Inter_V_window_4,
	Inter_V_window_5,Inter_V_window_6,Inter_V_window_7,Inter_V_window_8,
	Inter_C_window_0_0,Inter_C_window_1_0,Inter_C_window_2_0,
	Inter_C_window_0_1,Inter_C_window_1_1,Inter_C_window_2_1,
	Inter_C_window_0_2,Inter_C_window_1_2,Inter_C_window_2_2,
	Inter_bi_window_0,Inter_bi_window_1,Inter_bi_window_2,Inter_bi_window_3);
	input IsInterLuma;
	input IsInterChroma;
	input Is_InterChromaCopy;
	input mv_below8x8_curr;
	input [3:0] pos_FracL;
	input [1:0] blk4x4_rec_counter_1to0;
	input [3:0] blk4x4_inter_calculate_counter;
	
	input [7:0] Inter_ref_00_00,Inter_ref_01_00,Inter_ref_02_00,Inter_ref_03_00,Inter_ref_04_00,Inter_ref_05_00;
	input [7:0] Inter_ref_06_00,Inter_ref_07_00,Inter_ref_08_00,Inter_ref_09_00,Inter_ref_10_00,Inter_ref_11_00,Inter_ref_12_00;
	input [7:0] Inter_ref_00_01,Inter_ref_01_01,Inter_ref_02_01,Inter_ref_03_01,Inter_ref_04_01,Inter_ref_05_01;
	input [7:0] Inter_ref_06_01,Inter_ref_07_01,Inter_ref_08_01,Inter_ref_09_01,Inter_ref_10_01,Inter_ref_11_01,Inter_ref_12_01;
	input [7:0] Inter_ref_00_02,Inter_ref_01_02,Inter_ref_02_02,Inter_ref_03_02,Inter_ref_04_02,Inter_ref_05_02;
	input [7:0] Inter_ref_06_02,Inter_ref_07_02,Inter_ref_08_02,Inter_ref_09_02,Inter_ref_10_02,Inter_ref_11_02,Inter_ref_12_02;
	input [7:0] Inter_ref_00_03,Inter_ref_01_03,Inter_ref_02_03,Inter_ref_03_03,Inter_ref_04_03,Inter_ref_05_03;
	input [7:0] Inter_ref_06_03,Inter_ref_07_03,Inter_ref_08_03,Inter_ref_09_03,Inter_ref_10_03,Inter_ref_11_03,Inter_ref_12_03;
	input [7:0] Inter_ref_00_04,Inter_ref_01_04,Inter_ref_02_04,Inter_ref_03_04,Inter_ref_04_04,Inter_ref_05_04;
	input [7:0] Inter_ref_06_04,Inter_ref_07_04,Inter_ref_08_04,Inter_ref_09_04,Inter_ref_10_04,Inter_ref_11_04,Inter_ref_12_04;
	input [7:0] Inter_ref_00_05,Inter_ref_01_05,Inter_ref_02_05,Inter_ref_03_05,Inter_ref_04_05,Inter_ref_05_05;
	input [7:0] Inter_ref_06_05,Inter_ref_07_05,Inter_ref_08_05,Inter_ref_09_05,Inter_ref_10_05,Inter_ref_11_05,Inter_ref_12_05;
	input [7:0] Inter_ref_00_06,Inter_ref_01_06,Inter_ref_02_06,Inter_ref_03_06,Inter_ref_04_06,Inter_ref_05_06;
	input [7:0] Inter_ref_06_06,Inter_ref_07_06,Inter_ref_08_06,Inter_ref_09_06,Inter_ref_10_06,Inter_ref_11_06,Inter_ref_12_06;
	input [7:0] Inter_ref_00_07,Inter_ref_01_07,Inter_ref_02_07,Inter_ref_03_07,Inter_ref_04_07,Inter_ref_05_07;
	input [7:0] Inter_ref_06_07,Inter_ref_07_07,Inter_ref_08_07,Inter_ref_09_07,Inter_ref_10_07,Inter_ref_11_07,Inter_ref_12_07;
	input [7:0] Inter_ref_00_08,Inter_ref_01_08,Inter_ref_02_08,Inter_ref_03_08,Inter_ref_04_08,Inter_ref_05_08;
	input [7:0] Inter_ref_06_08,Inter_ref_07_08,Inter_ref_08_08,Inter_ref_09_08,Inter_ref_10_08,Inter_ref_11_08,Inter_ref_12_08;
	input [7:0] Inter_ref_00_09,Inter_ref_01_09,Inter_ref_02_09,Inter_ref_03_09,Inter_ref_04_09,Inter_ref_05_09;
	input [7:0] Inter_ref_06_09,Inter_ref_07_09,Inter_ref_08_09,Inter_ref_09_09,Inter_ref_10_09,Inter_ref_11_09,Inter_ref_12_09;
	input [7:0] Inter_ref_00_10,Inter_ref_01_10,Inter_ref_02_10,Inter_ref_03_10,Inter_ref_04_10,Inter_ref_05_10;
	input [7:0] Inter_ref_06_10,Inter_ref_07_10,Inter_ref_08_10,Inter_ref_09_10,Inter_ref_10_10,Inter_ref_11_10,Inter_ref_12_10;
	input [7:0] Inter_ref_00_11,Inter_ref_01_11,Inter_ref_02_11,Inter_ref_03_11,Inter_ref_04_11,Inter_ref_05_11;
	input [7:0] Inter_ref_06_11,Inter_ref_07_11,Inter_ref_08_11,Inter_ref_09_11,Inter_ref_10_11,Inter_ref_11_11,Inter_ref_12_11;
	input [7:0] Inter_ref_00_12,Inter_ref_01_12,Inter_ref_02_12,Inter_ref_03_12,Inter_ref_04_12,Inter_ref_05_12;
	input [7:0] Inter_ref_06_12,Inter_ref_07_12,Inter_ref_08_12,Inter_ref_09_12,Inter_ref_10_12,Inter_ref_11_12,Inter_ref_12_12; 
	
	output [7:0] Inter_pix_copy0,Inter_pix_copy1,Inter_pix_copy2,Inter_pix_copy3;
	output [7:0] Inter_H_window_0_0,Inter_H_window_1_0,Inter_H_window_2_0,Inter_H_window_3_0,Inter_H_window_4_0,Inter_H_window_5_0;
	output [7:0] Inter_H_window_0_1,Inter_H_window_1_1,Inter_H_window_2_1,Inter_H_window_3_1,Inter_H_window_4_1,Inter_H_window_5_1;
	output [7:0] Inter_H_window_0_2,Inter_H_window_1_2,Inter_H_window_2_2,Inter_H_window_3_2,Inter_H_window_4_2,Inter_H_window_5_2;
	output [7:0] Inter_H_window_0_3,Inter_H_window_1_3,Inter_H_window_2_3,Inter_H_window_3_3,Inter_H_window_4_3,Inter_H_window_5_3;
	output [7:0] Inter_H_window_0_4,Inter_H_window_1_4,Inter_H_window_2_4,Inter_H_window_3_4,Inter_H_window_4_4,Inter_H_window_5_4;
	output [7:0] Inter_H_window_0_5,Inter_H_window_1_5,Inter_H_window_2_5,Inter_H_window_3_5,Inter_H_window_4_5,Inter_H_window_5_5;
	output [7:0] Inter_H_window_0_6,Inter_H_window_1_6,Inter_H_window_2_6,Inter_H_window_3_6,Inter_H_window_4_6,Inter_H_window_5_6;
	output [7:0] Inter_H_window_0_7,Inter_H_window_1_7,Inter_H_window_2_7,Inter_H_window_3_7,Inter_H_window_4_7,Inter_H_window_5_7;
	output [7:0] Inter_H_window_0_8,Inter_H_window_1_8,Inter_H_window_2_8,Inter_H_window_3_8,Inter_H_window_4_8,Inter_H_window_5_8;
	output [7:0] Inter_V_window_0,Inter_V_window_1,Inter_V_window_2,Inter_V_window_3,Inter_V_window_4;
	output [7:0] Inter_V_window_5,Inter_V_window_6,Inter_V_window_7,Inter_V_window_8;
	output [7:0] Inter_C_window_0_0,Inter_C_window_1_0,Inter_C_window_2_0;
	output [7:0] Inter_C_window_0_1,Inter_C_window_1_1,Inter_C_window_2_1;
	output [7:0] Inter_C_window_0_2,Inter_C_window_1_2,Inter_C_window_2_2;
	output [7:0] Inter_bi_window_0,Inter_bi_window_1,Inter_bi_window_2,Inter_bi_window_3;
	
	reg [7:0] Inter_pix_copy0,Inter_pix_copy1,Inter_pix_copy2,Inter_pix_copy3;
	reg [7:0] Inter_H_window_0_0,Inter_H_window_1_0,Inter_H_window_2_0,Inter_H_window_3_0,Inter_H_window_4_0,Inter_H_window_5_0;
	reg [7:0] Inter_H_window_0_1,Inter_H_window_1_1,Inter_H_window_2_1,Inter_H_window_3_1,Inter_H_window_4_1,Inter_H_window_5_1;
	reg [7:0] Inter_H_window_0_2,Inter_H_window_1_2,Inter_H_window_2_2,Inter_H_window_3_2,Inter_H_window_4_2,Inter_H_window_5_2;
	reg [7:0] Inter_H_window_0_3,Inter_H_window_1_3,Inter_H_window_2_3,Inter_H_window_3_3,Inter_H_window_4_3,Inter_H_window_5_3;
	reg [7:0] Inter_H_window_0_4,Inter_H_window_1_4,Inter_H_window_2_4,Inter_H_window_3_4,Inter_H_window_4_4,Inter_H_window_5_4;
	reg [7:0] Inter_H_window_0_5,Inter_H_window_1_5,Inter_H_window_2_5,Inter_H_window_3_5,Inter_H_window_4_5,Inter_H_window_5_5;
	reg [7:0] Inter_H_window_0_6,Inter_H_window_1_6,Inter_H_window_2_6,Inter_H_window_3_6,Inter_H_window_4_6,Inter_H_window_5_6;
	reg [7:0] Inter_H_window_0_7,Inter_H_window_1_7,Inter_H_window_2_7,Inter_H_window_3_7,Inter_H_window_4_7,Inter_H_window_5_7;
	reg [7:0] Inter_H_window_0_8,Inter_H_window_1_8,Inter_H_window_2_8,Inter_H_window_3_8,Inter_H_window_4_8,Inter_H_window_5_8;
	reg [7:0] Inter_V_window_0,Inter_V_window_1,Inter_V_window_2,Inter_V_window_3,Inter_V_window_4;
	reg [7:0] Inter_V_window_5,Inter_V_window_6,Inter_V_window_7,Inter_V_window_8;
	reg [7:0] Inter_C_window_0_0,Inter_C_window_1_0,Inter_C_window_2_0;
	reg [7:0] Inter_C_window_0_1,Inter_C_window_1_1,Inter_C_window_2_1;
	reg [7:0] Inter_C_window_0_2,Inter_C_window_1_2,Inter_C_window_2_2;
	reg [7:0] Inter_bi_window_0,Inter_bi_window_1,Inter_bi_window_2,Inter_bi_window_3;
	
	parameter pos_Int = 4'b0000;
	parameter pos_a   = 4'b0100;
	parameter pos_b   = 4'b1000;
	parameter pos_c   = 4'b1100; 
	parameter pos_d   = 4'b0001;
	parameter pos_e   = 4'b0101;
	parameter pos_f   = 4'b1001;
	parameter pos_g   = 4'b1101;
	parameter pos_h   = 4'b0010;
	parameter pos_i   = 4'b0110;
	parameter pos_j   = 4'b1010;
	parameter pos_k   = 4'b1110;
	parameter pos_n   = 4'b0011;
	parameter pos_p   = 4'b0111;
	parameter pos_q   = 4'b1011;
	parameter pos_r   = 4'b1111;
	
	//-------------------------------
	//sliding window control		 
	//-------------------------------
	wire Is_blk4x4_0;//When inter 8x8(or above) predicted: top-left blk4x4
					 //When inter 4x4           predicted: each blk4x4
	wire Is_blk4x4_1;
	wire Is_blk4x4_2;
	wire Is_blk4x4_3;
	assign Is_blk4x4_0 = (IsInterLuma && (mv_below8x8_curr || (!mv_below8x8_curr && 
							blk4x4_rec_counter_1to0 == 2'b00))); 									//top-left
	assign Is_blk4x4_1 = (IsInterLuma && (!mv_below8x8_curr && blk4x4_rec_counter_1to0 == 2'b01));	//top-right
	assign Is_blk4x4_2 = (IsInterLuma && (!mv_below8x8_curr && blk4x4_rec_counter_1to0 == 2'b10));	//bottom-left
	assign Is_blk4x4_3 = (IsInterLuma && (!mv_below8x8_curr && blk4x4_rec_counter_1to0 == 2'b11)); 	//bottom-right
	
	//For both luma & chroma,if current pixel is to be directly copied instead of inter calculated,
	//the sliding windows output Inter_pix_copy0 ~ 3 is the inter prediction output
	always @ (IsInterLuma or pos_FracL or blk4x4_inter_calculate_counter
		or Is_blk4x4_0 or Is_blk4x4_1 or Is_blk4x4_2 or Is_blk4x4_3
		or Is_InterChromaCopy or mv_below8x8_curr
		or Inter_ref_00_00 or Inter_ref_01_00 or Inter_ref_02_00 or Inter_ref_03_00
		or Inter_ref_00_01 or Inter_ref_01_01 or Inter_ref_02_01 or Inter_ref_03_01
		or Inter_ref_00_02 or Inter_ref_01_02 or Inter_ref_02_02 or Inter_ref_03_02 
		or Inter_ref_04_02 or Inter_ref_05_02 or Inter_ref_06_02 or Inter_ref_07_02 
		or Inter_ref_08_02 or Inter_ref_09_02 or Inter_ref_00_03 or Inter_ref_01_03
		or Inter_ref_02_03 or Inter_ref_03_03 or Inter_ref_04_03 or Inter_ref_05_03
		or Inter_ref_06_03 or Inter_ref_07_03 or Inter_ref_08_03 or Inter_ref_09_03
		or Inter_ref_02_04 or Inter_ref_03_04 or Inter_ref_04_04 or Inter_ref_05_04
		or Inter_ref_06_04 or Inter_ref_07_04 or Inter_ref_08_04 or Inter_ref_09_04
		or Inter_ref_02_05 or Inter_ref_03_05 or Inter_ref_04_05 or Inter_ref_05_05
		or Inter_ref_06_05 or Inter_ref_07_05 or Inter_ref_08_05 or Inter_ref_09_05
		or Inter_ref_02_06 or Inter_ref_03_06 or Inter_ref_04_06 or Inter_ref_05_06
		or Inter_ref_06_06 or Inter_ref_07_06 or Inter_ref_08_06 or Inter_ref_09_06
		or Inter_ref_02_07 or Inter_ref_03_07 or Inter_ref_04_07 or Inter_ref_05_07
		or Inter_ref_06_07 or Inter_ref_07_07 or Inter_ref_08_07 or Inter_ref_09_07
		or Inter_ref_02_08 or Inter_ref_03_08 or Inter_ref_04_08 or Inter_ref_05_08
		or Inter_ref_06_08 or Inter_ref_07_08 or Inter_ref_08_08 or Inter_ref_09_08
		or Inter_ref_02_09 or Inter_ref_03_09 or Inter_ref_04_09 or Inter_ref_05_09
		or Inter_ref_06_09 or Inter_ref_07_09 or Inter_ref_08_09 or Inter_ref_09_09)
		if (IsInterLuma && pos_FracL == `pos_Int)
			case ({Is_blk4x4_0,Is_blk4x4_1,Is_blk4x4_2,Is_blk4x4_3})
				4'b1000:
				case (blk4x4_inter_calculate_counter)
					4'd4:begin	Inter_pix_copy0 <= Inter_ref_02_02;	Inter_pix_copy1 <= Inter_ref_02_03;
								Inter_pix_copy2 <= Inter_ref_02_04;	Inter_pix_copy3 <= Inter_ref_02_05;end
					4'd3:begin	Inter_pix_copy0 <= Inter_ref_03_02;	Inter_pix_copy1 <= Inter_ref_03_03;
								Inter_pix_copy2 <= Inter_ref_03_04;	Inter_pix_copy3 <= Inter_ref_03_05;end
					4'd2:begin	Inter_pix_copy0 <= Inter_ref_04_02;	Inter_pix_copy1 <= Inter_ref_04_03;
								Inter_pix_copy2 <= Inter_ref_04_04;	Inter_pix_copy3 <= Inter_ref_04_05;end
					4'd1:begin	Inter_pix_copy0 <= Inter_ref_05_02;	Inter_pix_copy1 <= Inter_ref_05_03;
								Inter_pix_copy2 <= Inter_ref_05_04;	Inter_pix_copy3 <= Inter_ref_05_05;end
					default:begin	Inter_pix_copy0 <= 0;	Inter_pix_copy1 <= 0;
									Inter_pix_copy2 <= 0;	Inter_pix_copy3 <= 0;end
			  	endcase
				4'b0100:
				case (blk4x4_inter_calculate_counter)
					4'd4:begin	Inter_pix_copy0 <= Inter_ref_06_02;	Inter_pix_copy1 <= Inter_ref_06_03;
								Inter_pix_copy2 <= Inter_ref_06_04;	Inter_pix_copy3 <= Inter_ref_06_05;end
					4'd3:begin	Inter_pix_copy0 <= Inter_ref_07_02;	Inter_pix_copy1 <= Inter_ref_07_03;
								Inter_pix_copy2 <= Inter_ref_07_04;	Inter_pix_copy3 <= Inter_ref_07_05;end
					4'd2:begin	Inter_pix_copy0 <= Inter_ref_08_02;	Inter_pix_copy1 <= Inter_ref_08_03;
								Inter_pix_copy2 <= Inter_ref_08_04;	Inter_pix_copy3 <= Inter_ref_08_05;end
					4'd1:begin	Inter_pix_copy0 <= Inter_ref_09_02;	Inter_pix_copy1 <= Inter_ref_09_03;
								Inter_pix_copy2 <= Inter_ref_09_04;	Inter_pix_copy3 <= Inter_ref_09_05;end
					default:begin	Inter_pix_copy0 <= 0;	Inter_pix_copy1 <= 0;