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[/] [t6507lp/] [trunk/] [rtl/] [verilog/] [video_converter.v] - Rev 228
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//////////////////////////////////////////////////////////////////////////// //// //// //// t2600 IP Core //// //// //// //// This file is part of the t2600 project //// //// http://www.opencores.org/cores/t2600/ //// //// //// //// Description //// //// Color scheme conversion //// //// //// //// TODO: //// //// - Maybe less colors will be used //// //// //// //// Author(s): //// //// - Gabriel Oshiro Zardo, gabrieloshiro@gmail.com //// //// - Samuel Nascimento Pagliarini (creep), snpagliarini@gmail.com //// //// //// //////////////////////////////////////////////////////////////////////////// //// //// //// Copyright (C) 2001 Authors and OPENCORES.ORG //// //// //// //// This source file may be used and distributed without //// //// restriction provided that this copyright statement is not //// //// removed from the file and that any derivative work contains //// //// the original copyright notice and the associated disclaimer. //// //// //// //// 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 //// //// later version. //// //// //// //// This source is distributed in the hope that it will be //// //// useful, but WITHOUT ANY WARRANTY; without even the implied //// //// warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR //// //// PURPOSE. See the GNU Lesser General Public License for more //// //// details. //// //// //// //// You should have received a copy of the GNU Lesser General //// //// Public License along with this source; if not, download it //// //// from http://www.opencores.org/lgpl.shtml //// //// //// //////////////////////////////////////////////////////////////////////////// // note: this converts 7 ypbpr bits into 24 rgb bits. In order to use less rgb bits just use the most significant ones. module video_converter(ypbpr, rgb); input [6:0] ypbpr; output reg [23:0] rgb; always @(*) begin case (ypbpr[2:0]) // luminance 3'h0: begin case (ypbpr[6:3]) 4'h0: rgb = 24'h000000; 4'h1: rgb = 24'h444400; 4'h2: rgb = 24'h702800; 4'h3: rgb = 24'h841800; 4'h4: rgb = 24'h880000; 4'h5: rgb = 24'h78005C; 4'h6: rgb = 24'h480078; 4'h7: rgb = 24'h140084; 4'h8: rgb = 24'h000088; 4'h9: rgb = 24'h00187C; 4'hA: rgb = 24'h002C5C; 4'hB: rgb = 24'h003C2C; 4'hC: rgb = 24'h003C00; 4'hD: rgb = 24'h143800; 4'hE: rgb = 24'h2C3000; 4'hF: rgb = 24'h442800; endcase end 3'h1: begin case (ypbpr[6:3]) 4'h0: rgb = 24'h404040; 4'h1: rgb = 24'h646410; 4'h2: rgb = 24'h844414; 4'h3: rgb = 24'h983418; 4'h4: rgb = 24'h9C2020; 4'h5: rgb = 24'h8C2074; 4'h6: rgb = 24'h602090; 4'h7: rgb = 24'h302098; 4'h8: rgb = 24'h1C209C; 4'h9: rgb = 24'h1C3890; 4'hA: rgb = 24'h1C4C78; 4'hB: rgb = 24'h1C5C48; 4'hC: rgb = 24'h205C20; 4'hD: rgb = 24'h345C1C; 4'hE: rgb = 24'h4C501C; 4'hF: rgb = 24'h644818; endcase end 3'h2: begin case (ypbpr[6:3]) 4'h0: rgb = 24'h6C6C6C; 4'h1: rgb = 24'h848424; 4'h2: rgb = 24'h985C28; 4'h3: rgb = 24'hAC5030; 4'h4: rgb = 24'hB03C3C; 4'h5: rgb = 24'hA03C88; 4'h6: rgb = 24'h783CA4; 4'h7: rgb = 24'h4C3CAC; 4'h8: rgb = 24'h3840B0; 4'h9: rgb = 24'h3854A8; 4'hA: rgb = 24'h386890; 4'hB: rgb = 24'h387C64; 4'hC: rgb = 24'h407C40; 4'hD: rgb = 24'h507C38; 4'hE: rgb = 24'h687034; 4'hF: rgb = 24'h846830; endcase end 3'h3: begin case (ypbpr[6:3]) 4'h0: rgb = 24'h909090; 4'h1: rgb = 24'hA0A034; 4'h2: rgb = 24'hAC783C; 4'h3: rgb = 24'hC06848; 4'h4: rgb = 24'hC05858; 4'h5: rgb = 24'hB0589C; 4'h6: rgb = 24'h8C58B8; 4'h7: rgb = 24'h6858C0; 4'h8: rgb = 24'h505CC0; 4'h9: rgb = 24'h5070BC; 4'hA: rgb = 24'h5084AC; 4'hB: rgb = 24'h509C80; 4'hC: rgb = 24'h5C9C5C; 4'hD: rgb = 24'h6C9850; 4'hE: rgb = 24'h848C4C; 4'hF: rgb = 24'hA08444; endcase end 3'h4: begin case (ypbpr[6:3]) 4'h0: rgb = 24'hB0B0B0; 4'h1: rgb = 24'hB8B840; 4'h2: rgb = 24'hBC8C4C; 4'h3: rgb = 24'hD0805C; 4'h4: rgb = 24'hD07070; 4'h5: rgb = 24'hC070B0; 4'h6: rgb = 24'hA070CC; 4'h7: rgb = 24'h7C70D0; 4'h8: rgb = 24'h6874D0; 4'h9: rgb = 24'h6888CC; 4'hA: rgb = 24'h689CC0; 4'hB: rgb = 24'h68B494; 4'hC: rgb = 24'h74B474; 4'hD: rgb = 24'h84B468; 4'hE: rgb = 24'h9CA864; 4'hF: rgb = 24'hB89C58; endcase end 3'h5: begin case (ypbpr[6:3]) 4'h0: rgb = 24'hC8C8C8; 4'h1: rgb = 24'hD0D050; 4'h2: rgb = 24'hCCA05C; 4'h3: rgb = 24'hE09470; 4'h4: rgb = 24'hE08888; 4'h5: rgb = 24'hD084C0; 4'h6: rgb = 24'hB484DC; 4'h7: rgb = 24'h9488E0; 4'h8: rgb = 24'h7C8CE0; 4'h9: rgb = 24'h7C9CDC; 4'hA: rgb = 24'h7CB4D4; 4'hB: rgb = 24'h7CD0AC; 4'hC: rgb = 24'h8CD08C; 4'hD: rgb = 24'h9CCC7C; 4'hE: rgb = 24'hB4C078; 4'hF: rgb = 24'hD0B46C; endcase end 3'h6: begin case (ypbpr[6:3]) 4'h0: rgb = 24'hDCDCDC; 4'h1: rgb = 24'hE8E85C; 4'h2: rgb = 24'hDCB468; 4'h3: rgb = 24'hECA880; 4'h4: rgb = 24'hECA0A0; 4'h5: rgb = 24'hDC9CD0; 4'h6: rgb = 24'hC49CEC; 4'h7: rgb = 24'hA8A0EC; 4'h8: rgb = 24'h90A4EC; 4'h9: rgb = 24'h90B4EC; 4'hA: rgb = 24'h90CCE8; 4'hB: rgb = 24'h90E4C0; 4'hC: rgb = 24'hA4E4A4; 4'hD: rgb = 24'hB4E490; 4'hE: rgb = 24'hCCD488; 4'hF: rgb = 24'hE8CC7C; endcase end 3'h7: begin case (ypbpr[6:3]) 4'h0: rgb = 24'hECECEC; 4'h1: rgb = 24'hFCFC68; 4'h2: rgb = 24'hECC878; 4'h3: rgb = 24'hFCBC94; 4'h4: rgb = 24'hFCB4B4; 4'h5: rgb = 24'hECB0E0; 4'h6: rgb = 24'hD4B0FC; 4'h7: rgb = 24'hBCB4FC; 4'h8: rgb = 24'hA4B8FC; 4'h9: rgb = 24'hA4C8FC; 4'hA: rgb = 24'hA4E0FC; 4'hB: rgb = 24'hA4FCD4; 4'hC: rgb = 24'hB8FCB8; 4'hD: rgb = 24'hC8FCA4; 4'hE: rgb = 24'hE0EC9C; 4'hF: rgb = 24'hFCE08C; endcase end endcase end endmodule
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