Subversion Repositories qaz_libs

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

////                                                              ////

//// Copyright (C) 2018 Authors and OPENCORES.ORG                 ////

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//// This source file may be used and distributed without         ////

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//// removed from the file and that any derivative work contains  ////

//// the original copyright notice and the associated disclaimer. ////

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//// This source file is free software; you can redistribute it   ////

//// and/or modify it under the terms of the GNU Lesser General   ////

//// Public License as published by the Free Software Foundation; ////

//// either version 2.1 of the License, or (at your option) any   ////

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//// useful, but WITHOUT ANY WARRANTY; without even the implied   ////

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

class s_avf_api

  extends uvm_sequence #(avf_sequence_item);

  `uvm_object_utils(s_avf_api)

  avf_sequence_item item;

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

  mailbox #(video_frame_class) frame_buffer;

  int pixels_per_line;

  int lines_per_frame;

  int bits_per_pixel;

  int bytes_per_pixel;

  int pixels_per_clk;

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

  function void init( int pixels_per_line

                    , int lines_per_frame

                    , int bits_per_pixel

                    , int pixels_per_clk

                    );

    this.pixels_per_line  = pixels_per_line;

    this.lines_per_frame  = lines_per_frame;

    this.bits_per_pixel   = bits_per_pixel;

    this.bytes_per_pixel  = (bits_per_pixel % 8 == 0)

                          ? (bits_per_pixel / 8)

                          : (bits_per_pixel / 8) + 1;

    this.pixels_per_clk   = pixels_per_clk;

  endfunction : init

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

  task automatic put_frame(string pattern, int pixel = 0);

    video_frame_class f_h = new;

    f_h.init( pixels_per_line

            , lines_per_frame

            , bits_per_pixel

            , pixels_per_clk

            );

    case(pattern.tolower)

      "constant":   f_h.make_constant(pixel);

      "counting":   f_h.make_counting();

      "horizontal": f_h.make_horizontal();

      "vertical":   f_h.make_vertical();

      "random":     f_h.make_random();

      default:      `uvm_fatal(get_name(), "Pattern not supported!")

    endcase

    frame_buffer.put(f_h);

    uvm_report_info(get_name(), $sformatf("| put_frame(%s)", pattern.tolower));

  endtask: put_frame

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

  task send_frame_buffer( uvm_sequencer_base seqr

                        , uvm_sequence_base parent = null

                        );

    this.start(seqr, parent);

  endtask

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

  task body();

    item = avf_sequence_item::type_id::create("avf_sequence_item");

    start_item(item);

    if(frame_buffer.num() != 0)

      item.frame_buffer = this.frame_buffer;

    finish_item(item);

  endtask

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

  function new(string name = "s_avf_api");

    super.new(name);

    frame_buffer = new;

  endfunction

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

endclass : s_avf_api