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//// from http://www.opencores.org/lgpl.shtml ////
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//// from http://www.opencores.org/lgpl.shtml ////
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//// ////
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//// ////
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//////////////////////////////////////////////////////////////////////
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//////////////////////////////////////////////////////////////////////
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package video_frame_pkg;
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package video_frame_pkg;
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import logger_pkg::*;
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import logger_pkg::*;
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// --------------------------------------------------------------------
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typedef struct
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typedef struct
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{
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{
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int pixel[];
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int pixel[];
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} line_s;
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} line_s;
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// --------------------------------------------------------------------
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typedef struct
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typedef struct
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{
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{
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int x;
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int x;
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int y;
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int y;
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} frame_coordinate_t;
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} frame_coordinate_t;
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// --------------------------------------------------------------------
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typedef int flattened_frame_t[];
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typedef int flattened_frame_t[];
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typedef int unsigned video_array_t[][];
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typedef int unsigned video_array_t[][];
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// --------------------------------------------------------------------
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// --------------------------------------------------------------------
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class video_frame_class;
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`include "video_frame_config.svh"
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logger_class log;
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`include "video_frame_class.svh"
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rand int frame_id;
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rand int pixels_per_line;
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rand int lines_per_frame;
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rand int bits_per_pixel;
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int bytes_per_pixel;
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rand int pixels_per_clk;
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line_s lines[];
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string name = "";
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string pattern = "";
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constraint default_pixels_per_line
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{
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pixels_per_line >= 4;
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pixels_per_line % 2 == 0;
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pixels_per_line <= 16384;
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}
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constraint default_lines_per_frame
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{
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lines_per_frame >= 4;
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lines_per_frame % 2 == 0;
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lines_per_frame <= 16384;
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}
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constraint default_bits_per_pixel
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{
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bits_per_pixel >= 1 && bits_per_pixel <= 32;
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}
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//--------------------------------------------------------------------
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function new;
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this.log = new;
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this.frame_id = 0;
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endfunction: new
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// --------------------------------------------------------------------
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function void init
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(
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int pixels_per_line,
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int lines_per_frame,
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int bits_per_pixel,
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int pixels_per_clk = 1,
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string name = ""
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);
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log.info($sformatf("%m"));
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this.pixels_per_line = pixels_per_line;
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this.lines_per_frame = lines_per_frame;
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this.bits_per_pixel = bits_per_pixel;
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this.pixels_per_clk = pixels_per_clk;
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this.name = name;
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this.bytes_per_pixel = (bits_per_pixel % 8 == 0)
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? (bits_per_pixel / 8)
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: (bits_per_pixel / 8) + 1;
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this.make_constant(0);
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endfunction: init
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// --------------------------------------------------------------------
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task write_pixel(frame_coordinate_t coordinate, int pixel);
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this.lines[coordinate.y].pixel[coordinate.x] = pixel;
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endtask: write_pixel
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// --------------------------------------------------------------------
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function int read_pixel(frame_coordinate_t coordinate);
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read_pixel = this.lines[coordinate.y].pixel[coordinate.x];
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endfunction: read_pixel
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// --------------------------------------------------------------------
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function flattened_frame_t flatten_frame();
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int i = 0;
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log.info($sformatf("%m"));
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flatten_frame = new[lines_per_frame*pixels_per_line];
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foreach(this.lines[l])
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foreach(this.lines[l].pixel[p])
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begin
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flatten_frame[i] = this.lines[l].pixel[p];
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i++;
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end
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endfunction: flatten_frame
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// --------------------------------------------------------------------
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function void make_constant(int pixel);
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log.info($sformatf("%m"));
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this.lines = new[lines_per_frame];
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foreach(this.lines[l])
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begin
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this.lines[l].pixel = new[pixels_per_line];
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foreach(this.lines[l].pixel[p])
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this.lines[l].pixel[p] = pixel;
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end
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pattern = "constant";
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endfunction: make_constant
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// --------------------------------------------------------------------
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function void make_counting(int offset = 0);
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log.info($sformatf("%m"));
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this.lines = new[lines_per_frame];
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foreach(this.lines[l])
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begin
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this.lines[l].pixel = new[pixels_per_line];
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foreach(this.lines[l].pixel[p])
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this.lines[l].pixel[p] = (pixels_per_line * l) + p + offset;
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end
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pattern = "counting";
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endfunction: make_counting
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// --------------------------------------------------------------------
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function void make_horizontal();
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log.info($sformatf("%m"));
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this.lines = new[lines_per_frame];
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foreach(this.lines[l])
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begin
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this.lines[l].pixel = new[pixels_per_line];
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foreach(this.lines[l].pixel[p])
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this.lines[l].pixel[p] = p;
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end
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pattern = "horizontal";
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endfunction: make_horizontal
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// --------------------------------------------------------------------
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function void make_vertical();
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log.info($sformatf("%m"));
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this.lines = new[lines_per_frame];
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foreach(this.lines[l])
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begin
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this.lines[l].pixel = new[pixels_per_line];
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foreach(this.lines[l].pixel[p])
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this.lines[l].pixel[p] = l;
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end
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pattern = "vertical";
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endfunction: make_vertical
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// --------------------------------------------------------------------
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function void make_random();
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log.info($sformatf("%m"));
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this.lines = new[lines_per_frame];
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foreach(this.lines[l])
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begin
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this.lines[l].pixel = new[pixels_per_line];
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foreach(this.lines[l].pixel[p])
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this.lines[l].pixel[p] = $urandom_range(((2 ** bits_per_pixel) - 1), 0);
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end
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pattern = "random";
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endfunction: make_random
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// --------------------------------------------------------------------
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function void copy(video_frame_class from);
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log.info($sformatf("%m"));
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this.frame_id = from.frame_id;
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this.pixels_per_line = from.pixels_per_line;
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this.lines_per_frame = from.lines_per_frame;
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this.bits_per_pixel = from.bits_per_pixel;
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this.name = from.name;
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this.lines = new[this.lines_per_frame];
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foreach(this.lines[l])
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begin
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this.lines[l].pixel = new[this.pixels_per_line];
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foreach(this.lines[l].pixel[p])
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this.lines[l].pixel[p] = from.lines[l].pixel[p];
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end
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endfunction: copy
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// --------------------------------------------------------------------
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virtual function video_frame_class clone;
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log.info($sformatf("%m"));
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clone = new();
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clone.copy(this);
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endfunction: clone
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// --------------------------------------------------------------------
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function video_frame_class catenate_horizontally(video_frame_class tail);
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log.info($sformatf("%m"));
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if(this.lines_per_frame != tail.lines_per_frame)
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return(null);
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if(this.bits_per_pixel != tail.bits_per_pixel)
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return(null);
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catenate_horizontally = new();
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catenate_horizontally.pixels_per_line = this.pixels_per_line + tail.pixels_per_line;
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catenate_horizontally.lines_per_frame = this.lines_per_frame;
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catenate_horizontally.bits_per_pixel = this.bits_per_pixel;
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catenate_horizontally.name = this.name;
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catenate_horizontally.lines = new[catenate_horizontally.lines_per_frame];
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foreach(catenate_horizontally.lines[l])
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begin
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catenate_horizontally.lines[l].pixel = new[catenate_horizontally.pixels_per_line];
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foreach(this.lines[l].pixel[p])
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catenate_horizontally.lines[l].pixel[p] = this.lines[l].pixel[p];
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foreach(tail.lines[l].pixel[p])
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catenate_horizontally.lines[l].pixel[p + this.pixels_per_line] = tail.lines[l].pixel[p];
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end
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endfunction: catenate_horizontally
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// --------------------------------------------------------------------
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function void shift_right(ref line_s column);
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log.info($sformatf("%m"));
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foreach(this.lines[l])
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for(int p = pixels_per_line - 1; p > 0; p--)
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this.lines[l].pixel[p] = this.lines[l].pixel[p - 1];
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foreach(this.lines[l])
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this.lines[l].pixel[0] = column.pixel[l];
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endfunction: shift_right
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// --------------------------------------------------------------------
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function int compare_line
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( int line
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, int max_mismatches
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, video_frame_class to
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);
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int mismatch_count = 0;
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if(to.bits_per_pixel != this.bits_per_pixel)
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begin
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log.error($sformatf("to.bits_per_pixel != this.bits_per_pixel | %s", name));
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return(-3);
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end
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foreach(this.lines[line].pixel[p])
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if(to.lines[line].pixel[p] != this.lines[line].pixel[p])
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begin
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if(max_mismatches > 0)
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mismatch_count++;
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log.error($sformatf("mismatch @ frame[%4h][%4h] | to == %4h | this == %4h | %s",
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line, p, to.lines[line].pixel[p], this.lines[line].pixel[p], name));
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if(mismatch_count > max_mismatches)
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return(mismatch_count);
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end
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return(mismatch_count);
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endfunction: compare_line
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// --------------------------------------------------------------------
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function int compare(int max_mismatches, video_frame_class to);
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int mismatch_count = 0;
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log.info($sformatf("%m"));
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if(to.pixels_per_line != this.pixels_per_line)
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begin
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log.error($sformatf("to.pixels_per_line != this.pixels_per_line | %s", name));
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return(-1);
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end
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if(to.lines_per_frame != this.lines_per_frame)
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begin
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log.error($sformatf("to.lines_per_frame != this.lines_per_frame | %s", name));
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return(-2);
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end
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if(to.bits_per_pixel != this.bits_per_pixel)
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begin
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log.error($sformatf("to.bits_per_pixel != this.bits_per_pixel | %s", name));
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return(-3);
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end
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foreach(this.lines[l])
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begin
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foreach(this.lines[l].pixel[p])
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if(to.lines[l].pixel[p] != this.lines[l].pixel[p])
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begin
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if(max_mismatches > 0)
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mismatch_count++;
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log.error($sformatf("mismatch @ frame[%4h][%4h] | to == %4h | this == %4h | %s", l, p, to.lines[l].pixel[p], this.lines[l].pixel[p], name));
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if(mismatch_count > max_mismatches)
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return(mismatch_count);
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end
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end
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return(mismatch_count);
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endfunction: compare
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// --------------------------------------------------------------------
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function void print_line(int line, int pixel, int count);
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log.info($sformatf("%m"));
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for(int i = 0; i < count; i++)
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log.display($sformatf("%4h @ frame[%4h][%4h] | %s", this.lines[line].pixel[(pixel + i)], line, (pixel + i), name));
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endfunction: print_line
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// --------------------------------------------------------------------
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function void print_config();
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log.display($sformatf("%m | frame_id = %06d | %s", frame_id, name));
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log.display($sformatf("%m | pixels_per_line = %06d | %s", pixels_per_line, name));
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log.display($sformatf("%m | lines_per_frame = %06d | %s", lines_per_frame, name));
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log.display($sformatf("%m | bits_per_pixel = %06d | %s", bits_per_pixel, name));
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log.display($sformatf("%m | pixels_per_clk = %06d | %s", pixels_per_clk, name));
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log.display($sformatf("%m | pattern = %s | %s", pattern, name));
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endfunction: print_config
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// --------------------------------------------------------------------
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function string convert2string();
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string s;
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string f ="";
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foreach(this.lines[l])
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begin
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s = $sformatf("[%4.d]", l);
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foreach(this.lines[l].pixel[p])
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s = {s, $sformatf("|%4.h", this.lines[l].pixel[p])};
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f = {f, s, "|\n"};
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end
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return f;
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endfunction: convert2string
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// --------------------------------------------------------------------
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endclass: video_frame_class
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// --------------------------------------------------------------------
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// --------------------------------------------------------------------
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endpackage: video_frame_pkg
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endpackage: video_frame_pkg
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