xil_rgb2ycrcb_config.m

基于FPGA的YUV转换RGB的色度空间转换

function Xil_RGB2YCrCb_config(this_block)

  % Revision History:
  %
  %   18-Sep-2005  (23:07 hours):
  %     Original code was machine generated by Xilinx's System Generator after parsing
  %     D:\VideoBlockset\development\HDL_src\ColorSpace\testbench\Xil_colorspaceRGB2YCrCb.vhd
  %
  %
  mybb = this_block.blockName;
  color_sub = get_param(mybb,'Parent');
  param_a = str2num(get_param(color_sub, 'coefA'));
  param_b = str2num(get_param(color_sub, 'coefB'));
  param_d = str2num(get_param(color_sub, 'coefC'));
  param_c = str2num(get_param(color_sub, 'coefD'));
  ymax    = str2num(get_param(color_sub, 'ymax'));
  ymin    = str2num(get_param(color_sub, 'ymin'));
  clip    = strcmp(get_param(color_sub, 'has_clip'),'on');
  clamp   = strcmp(get_param(color_sub, 'has_clamp'),'on');
  yoffset = str2num(get_param(color_sub, 'yoffset'));
  coffset = str2num(get_param(color_sub, 'coffset'));
  cmax    = str2num(get_param(color_sub, 'cmax'));
  cmin    = str2num(get_param(color_sub, 'cmin'));
  in_bits = str2num(get_param(color_sub, 'in_bits'));
  out_bits= str2num(get_param(color_sub, 'out_bits'));
  c_bits  = str2num(get_param(color_sub, 'c_bits'));
  m_bits  = str2num(get_param(color_sub, 'm_bits'));
  fabric_adds = double(strcmp(get_param(color_sub, 'fabric_adds'),'on'));

  v4 = double(strcmp(lower(this_block.getDeviceFamilyName()), 'virtex4'));

  this_block.setTopLevelLanguage('VHDL');
  this_block.setEntityName('Xil_RGB2YCrCb_sg');

  % System Generator has to assume that your entity  has a combinational feed through; 
  %   if it  doesn't, then comment out the following line:
  this_block.tagAsCombinational;

  this_block.addSimulinkInport('R');
  this_block.addSimulinkInport('G');
  this_block.addSimulinkInport('B');
  this_block.addSimulinkInport('V_SYNC_in');
  this_block.addSimulinkInport('H_SYNC_in');
  this_block.addSimulinkInport('PIX_EN_in');
  this_block.addSimulinkInport('en');
  this_block.addSimulinkInport('rst');
  this_block.addSimulinkOutport('Y');
  this_block.addSimulinkOutport('Cr');
  this_block.addSimulinkOutport('Cb');
  this_block.addSimulinkOutport('V_SYNC_out');
  this_block.addSimulinkOutport('H_SYNC_out');
  this_block.addSimulinkOutport('PIX_EN_out');

  vsyncout_port = this_block.port('V_SYNC_out');
  vsyncout_port.setType('UFix_1_0');
  vsyncout_port.useHDLVector(false);
  hsyncout_port = this_block.port('H_SYNC_out');
  hsyncout_port.setType('UFix_1_0');
  hsyncout_port.useHDLVector(false);
  pixenout_port = this_block.port('PIX_EN_out');
  pixenout_port.setType('UFix_1_0');
  pixenout_port.useHDLVector(false);

  if (this_block.inputTypesKnown)

    v4 = double(strcmp(lower(this_block.getDeviceFamilyName()), 'virtex4'));

    % do input type checking, dynamic output type and generic setup in this code block.
    if (this_block.port('V_SYNC_in').width ~= 1)
      this_block.setError('Input data type for port "V_SYNC_in" must have width=1');
    end
    this_block.port('V_SYNC_in').useHDLVector(false);

    if (this_block.port('H_SYNC_in').width ~= 1)
      this_block.setError('Input data type for port "H_SYNC_in" must have width=1');
    end
    this_block.port('H_SYNC_in').useHDLVector(false);
    
    if (this_block.port('PIX_EN_in').width ~= 1)
      this_block.setError('Input data type for port "PIX_EN_in" must have width=1');
    end
    this_block.port('PIX_EN_in').useHDLVector(false);

    if (this_block.port('en').width ~= 1)
      this_block.setError('Input data type for port "en" must have width=1');
    end
    this_block.port('en').useHDLVector(false);

    if (this_block.port('rst').width ~= 1)
      this_block.setError('Input data type for port "rst" must have width=1');
    end
    this_block.port('rst').useHDLVector(false);

    if (this_block.port('R').width ~= in_bits) error('Width of port R not equal with input bits specified through GUI'); end
    if (this_block.port('G').width ~= in_bits) error('Width of port G not equal with input bits specified through GUI'); end
    if (this_block.port('B').width ~= in_bits) error('Width of port B not equal with input bits specified through GUI'); end
    this_block.port('Y').width = out_bits;
    this_block.port('Cr').width = out_bits;
    this_block.port('Cb').width = out_bits;
    this_block.port('V_SYNC_out').width = 1;
    this_block.port('H_SYNC_out').width = 1;
    this_block.port('PIX_EN_out').width = 1;

    this_block.addGeneric('family_has_mac', v4); 
    this_block.addGeneric('fabric_adds', fabric_adds);    
    this_block.addGeneric('iwidth', in_bits);
    this_block.addGeneric('cwidth', c_bits );
    this_block.addGeneric('mwidth', m_bits );
    this_block.addGeneric('owidth', out_bits);
    this_block.addGeneric('acoef', round(param_a*pow2(c_bits-1)));
    this_block.addGeneric('bcoef', round(param_b*pow2(c_bits-1)));
    this_block.addGeneric('ccoef', round(param_c*pow2(c_bits-1)));
    this_block.addGeneric('dcoef', round(param_d*pow2(c_bits-1)));
    this_block.addGeneric('has_clip', 'integer', num2str(clip));
    this_block.addGeneric('has_clamp', 'integer', num2str(clamp));
    this_block.addGeneric('ymax', ymax);
    this_block.addGeneric('ymin', ymin);
    this_block.addGeneric('cmax', cmax);
    this_block.addGeneric('cmin', cmin);
    this_block.addGeneric('yoffset', yoffset);
    this_block.addGeneric('coffset', coffset);
    
  end  % if(inputTypesKnown)

  if (this_block.inputRatesKnown)
    setup_as_single_rate(this_block,'clk','ce')
  end  % if(inputRatesKnown)

  this_block.addFile('../GenXlib_utils.vhd');
  this_block.addFile('../GenXlib_arch.vhd');
  this_block.addFile('../color_space_pkg.vhd');
  this_block.addFile('../Xil_RGB2YCrCb.vhd');
  this_block.addFile('Xil_RGB2YCrCb_sg_wrap.vhd');
return;


% ------------------------------------------------------------

function setup_as_single_rate(block,clkname,cename) 
  inputRates = block.inputRates; 
  uniqueInputRates = unique(inputRates); 
  if (length(uniqueInputRates)==1 & uniqueInputRates(1)==Inf) 
    block.setError('The inputs to this block cannot all be constant.'); 
    return; 
  end 
  if (uniqueInputRates(end) == Inf) 
     hasConstantInput = true; 
     uniqueInputRates = uniqueInputRates(1:end-1); 
  end 
  if (length(uniqueInputRates) ~= 1) 
    block.setError('The inputs to this block must run at a single rate.'); 
    return; 
  end 
  theInputRate = uniqueInputRates(1); 
  for i = 1:block.numSimulinkOutports 
     block.outport(i).setRate(theInputRate); 
  end 
  block.addClkCEPair(clkname,cename,theInputRate); 
  return; 

% ------------------------------------------------------------