pluto_hdl_adi/library/common/ad_csc_CrYCb2RGB.v

118 lines
4.1 KiB
Verilog

// ***************************************************************************
// ***************************************************************************
// Copyright 2011(c) Analog Devices, Inc.
//
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without modification,
// are permitted provided that the following conditions are met:
// - Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// - Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in
// the documentation and/or other materials provided with the
// distribution.
// - Neither the name of Analog Devices, Inc. nor the names of its
// contributors may be used to endorse or promote products derived
// from this software without specific prior written permission.
// - The use of this software may or may not infringe the patent rights
// of one or more patent holders. This license does not release you
// from the requirement that you obtain separate licenses from these
// patent holders to use this software.
// - Use of the software either in source or binary form, must be run
// on or directly connected to an Analog Devices Inc. component.
//
// THIS SOFTWARE IS PROVIDED BY ANALOG DEVICES "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
// INCLUDING, BUT NOT LIMITED TO, NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS FOR A
// PARTICULAR PURPOSE ARE DISCLAIMED.
//
// IN NO EVENT SHALL ANALOG DEVICES BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
// EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, INTELLECTUAL PROPERTY
// RIGHTS, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
// BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
// STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
// THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
// ***************************************************************************
// ***************************************************************************
// ***************************************************************************
// ***************************************************************************
// Transmit HDMI, CrYCb to RGB conversion
// The multiplication coefficients are in 1.4.12 format
// The addition coefficients are in 1.12.12 format
// R = (+408.583/256)*Cr + (+298.082/256)*Y + ( 000.000/256)*Cb + (-222.921);
// G = (-208.120/256)*Cr + (+298.082/256)*Y + (-100.291/256)*Cb + (+135.576);
// B = ( 000.000/256)*Cr + (+298.082/256)*Y + (+516.412/256)*Cb + (-276.836);
module ad_csc_CrYCb2RGB (
// Cr-Y-Cb inputs
clk,
CrYCb_sync,
CrYCb_data,
// R-G-B outputs
RGB_sync,
RGB_data);
// parameters
parameter DELAY_DATA_WIDTH = 16;
localparam DW = DELAY_DATA_WIDTH - 1;
// Cr-Y-Cb inputs
input clk;
input [DW:0] CrYCb_sync;
input [23:0] CrYCb_data;
// R-G-B outputs
output [DW:0] RGB_sync;
output [23:0] RGB_data;
// red
ad_csc_1 #(.DELAY_DATA_WIDTH(DELAY_DATA_WIDTH)) i_csc_1_R (
.clk (clk),
.sync (CrYCb_sync),
.data (CrYCb_data),
.C1 (17'h01989),
.C2 (17'h012a1),
.C3 (17'h00000),
.C4 (25'h10deebc),
.csc_sync_1 (RGB_sync),
.csc_data_1 (RGB_data[23:16]));
// green
ad_csc_1 #(.DELAY_DATA_WIDTH(1)) i_csc_1_G (
.clk (clk),
.sync (1'd0),
.data (CrYCb_data),
.C1 (17'h10d01),
.C2 (17'h012a1),
.C3 (17'h10644),
.C4 (25'h0087937),
.csc_sync_1 (),
.csc_data_1 (RGB_data[15:8]));
// blue
ad_csc_1 #(.DELAY_DATA_WIDTH(1)) i_csc_1_B (
.clk (clk),
.sync (1'd0),
.data (CrYCb_data),
.C1 (17'h00000),
.C2 (17'h012a1),
.C3 (17'h02046),
.C4 (25'h1114d60),
.csc_sync_1 (),
.csc_data_1 (RGB_data[7:0]));
endmodule
// ***************************************************************************
// ***************************************************************************