Subversion Repositories cavlc

//2011-8-7 initial version
 
`include "defines.v"
 
module cavlc_top(
	clk,
	rst_n,
	ena,
	start,
	rbsp,
	nC,
	max_coeff_num,
 
	coeff_0,
	coeff_1,
	coeff_2,
	coeff_3,
	coeff_4,
	coeff_5,
	coeff_6,
	coeff_7,
	coeff_8,
	coeff_9,
	coeff_10,
	coeff_11,
	coeff_12,
	coeff_13,
	coeff_14,
	coeff_15,
	TotalCoeff,
	len_comb,
	idle,
	valid
);
//------------------------
// ports
//------------------------
input	clk, rst_n;
input	ena;
input	start;
input	[0:15]	rbsp;
input	[4:0] 	nC;
input	[4:0]	max_coeff_num;
 
output	[8:0]	coeff_0;
output	[8:0]	coeff_1;
output	[8:0]	coeff_2;
output	[8:0]	coeff_3;
output	[8:0]	coeff_4;
output	[8:0]	coeff_5;
output	[8:0]	coeff_6;
output	[8:0]	coeff_7;
output	[8:0]	coeff_8;
output	[8:0]	coeff_9;
output	[8:0]	coeff_10;
output	[8:0]	coeff_11;
output	[8:0]	coeff_12;
output	[8:0]	coeff_13;
output	[8:0]	coeff_14;
output	[8:0]	coeff_15;
output  [4:0]	TotalCoeff;
output	[4:0]	len_comb;
output	idle;
output	valid;
 
//------------------------
// cavlc_read_total_coeffs
//------------------------
wire [1:0] TrailingOnes;
wire [4:0] TotalCoeff;
wire [1:0] TrailingOnes_comb;
wire [4:0] TotalCoeff_comb;
wire [4:0] len_read_total_coeffs_comb;
wire [7:0] cavlc_state;
 
cavlc_read_total_coeffs cavlc_read_total_coeffs(
	.clk(clk),
	.rst_n(rst_n),
	.ena(ena),
	.start(start),
	.sel(cavlc_state[`cavlc_read_total_coeffs_bit]),
 
	.rbsp(rbsp),
	.nC(nC),
 
	.TrailingOnes(TrailingOnes), 
	.TotalCoeff(TotalCoeff),
 
	.TrailingOnes_comb(TrailingOnes_comb), 
	.TotalCoeff_comb(TotalCoeff_comb),
 
	.len_comb(len_read_total_coeffs_comb)
);
 
//------------------------
// cavlc_read_levels
//------------------------
wire	[4:0]	len_read_levels_comb;
wire	[3:0]	i;
 
wire	[8:0]	level_0;
wire	[8:0]	level_1;
wire	[8:0]	level_2;
wire	[8:0]	level_3;
wire	[8:0]	level_4;
wire	[8:0]	level_5;
wire	[8:0]	level_6;
wire	[8:0]	level_7;
wire	[8:0]	level_8;
wire	[8:0]	level_9;
wire	[8:0]	level_10;
wire	[8:0]	level_11;
wire	[8:0]	level_12;
wire	[8:0]	level_13;
wire	[8:0]	level_14;
wire	[8:0]	level_15;
 
cavlc_read_levels cavlc_read_levels(
	.clk(clk),
	.rst_n(rst_n),
	.ena(ena),	
	.t1s_sel(cavlc_state[`cavlc_read_t1s_flags_bit]),
	.prefix_sel(cavlc_state[`cavlc_read_level_prefix_bit]),
	.suffix_sel(cavlc_state[`cavlc_read_level_suffix_bit]),
	.calc_sel(cavlc_state[`cavlc_calc_level_bit]),
	.TrailingOnes(TrailingOnes), 
	.TotalCoeff(TotalCoeff),
	.i(i),
	.rbsp(rbsp),
 
	.level_0(level_0),
	.level_1(level_1),
	.level_2(level_2),
	.level_3(level_3),
	.level_4(level_4),
	.level_5(level_5),
	.level_6(level_6),
	.level_7(level_7),
	.level_8(level_8),
	.level_9(level_9),
	.level_10(level_10),
	.level_11(level_11),
	.level_12(level_12),
	.level_13(level_13),
	.level_14(level_14),
	.level_15(level_15),
	.len_comb(len_read_levels_comb)
);
 
//------------------------
// cavlc_read_total_zeros
//------------------------
wire	[3:0]	TotalZeros_comb;
wire	[3:0]	len_read_total_zeros_comb;
 
cavlc_read_total_zeros cavlc_read_total_zeros(
	.ena(ena),
	.sel(cavlc_state[`cavlc_read_total_zeros_bit]),
	.chroma_DC_sel(nC[4]),
	.rbsp(rbsp[0:8]),
	.TotalCoeff(TotalCoeff[3:0]),
	.TotalZeros_comb(TotalZeros_comb),
	.len_comb(len_read_total_zeros_comb)
);
 
//------------------------
// read_run_before
//------------------------
wire	[3:0]	ZeroLeft;
wire	[3:0]	len_read_run_befores_comb;
 
cavlc_read_run_befores cavlc_read_run_befores(
	.clk(clk),
	.rst_n(rst_n),
	.ena(ena),
	.clr(cavlc_state[`cavlc_read_total_coeffs_bit]),
	.sel(cavlc_state[`cavlc_read_run_befores_bit]),
	.ZeroLeft_init(cavlc_state[`cavlc_read_total_zeros_bit]),
 
	.rbsp(rbsp[0:10]),
	.i(i),
	.TotalZeros_comb(TotalZeros_comb),
 
	.level_0(level_0),
	.level_1(level_1),
	.level_2(level_2),
	.level_3(level_3),
	.level_4(level_4),
	.level_5(level_5),
	.level_6(level_6),
	.level_7(level_7),
	.level_8(level_8),
	.level_9(level_9),
	.level_10(level_10),
	.level_11(level_11),
	.level_12(level_12),
	.level_13(level_13),
	.level_14(level_14),
	.level_15(level_15),
 
	.coeff_0(coeff_0),
	.coeff_1(coeff_1),
	.coeff_2(coeff_2),
	.coeff_3(coeff_3),
	.coeff_4(coeff_4),
	.coeff_5(coeff_5),
	.coeff_6(coeff_6),
	.coeff_7(coeff_7),
	.coeff_8(coeff_8),
	.coeff_9(coeff_9),
	.coeff_10(coeff_10),
	.coeff_11(coeff_11),
	.coeff_12(coeff_12),
	.coeff_13(coeff_13),
	.coeff_14(coeff_14),
	.coeff_15(coeff_15),
	.ZeroLeft(ZeroLeft),
	.len_comb(len_read_run_befores_comb)
);
 
//------------------------
// cavlc_len_gen
//------------------------
wire [4:0] len_comb;
 
cavlc_len_gen cavlc_len_gen(
	.cavlc_state(cavlc_state),
	.len_read_total_coeffs_comb(len_read_total_coeffs_comb),
	.len_read_levels_comb(len_read_levels_comb),
	.len_read_total_zeros_comb(len_read_total_zeros_comb),
	.len_read_run_befores_comb(len_read_run_befores_comb),
	.len_comb(len_comb)
);
 
//------------------------
// fsm
//------------------------
cavlc_fsm cavlc_fsm(
	.clk(clk),
	.rst_n(rst_n),
	.ena(ena),
	.start(start),
 
	.max_coeff_num(max_coeff_num),
	.TotalCoeff(TotalCoeff),
	.TotalCoeff_comb(TotalCoeff_comb),
	.TrailingOnes(TrailingOnes),
	.TrailingOnes_comb(TrailingOnes_comb),
	.ZeroLeft(ZeroLeft),
	.state(cavlc_state),
	.i(i),
	.idle(idle),
	.valid(valid) 
);
 
endmodule