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//// Copyright (C) 2019 Authors and OPENCORES.ORG                 ////

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//////////////////////////////////////////////////////////////////////

module

  avf_kernel_1x_buffer #(N, U, L, AW)

  (

    axis_if axis_in,

    axis_if axis_out,

    input   aclk,

    input   aresetn

  );

  // --------------------------------------------------------------------

  axis_if #(.N(N*L*L), .U(U+1)) a_buffer(.*);

  avf_kernel_buffer #(N, U, L, AW)

    kernel_i(.axis_out(a_buffer), .*);

  // --------------------------------------------------------------------

  reg [(N*8)-1:0] kernel[L][L];

  generate

    for(genvar j = 0; j < L * L; j++)

    begin: kernel_gen

      assign  kernel[j/L][j%L] = a_buffer.tdata[j*N*8 +: N*8];

    end

  endgenerate

  // --------------------------------------------------------------------

  axis_if #(.N(N), .U(U+1)) a_out(.*);

  axis_alias alias_i(.axis_in(a_out), .*);

  // --------------------------------------------------------------------

  assign a_buffer.tuser[3] = a_buffer.tvalid & a_buffer.tready;

  //                                              EOF   SOL   SOF

  localparam logic[U:0] TUSER_MASK[3] = '{ {1'b0, 1'b0, 1'b1, 1'b1},   // first

                                           {1'b0, 1'b0, 1'b0, 1'b0},   // middle

                                           {1'b1, 1'b1, 1'b0, 1'b0} }; // last

  axis_down_shift #(.N(N*L*L), .S(L*L), .U(U+1), .TUSER_MASK(TUSER_MASK))

    down_i(.axis_in(a_buffer), .axis_out(a_out), .*);

// --------------------------------------------------------------------

endmodule