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[/] [mkjpeg/] [trunk/] [design/] [common/] [JPEG_PKG.vhd] - Diff between revs 28 and 32

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Rev 28 Rev 32
Line 25... Line 25... 
  use ieee.numeric_std.all;
 
  use ieee.numeric_std.all;
 
 
 
 
 
package JPEG_PKG is
 
package JPEG_PKG is
 
 
 
 
 
  -- do not change, constant
 
  -- do not change, constant
 
  constant C_HDR_SIZE         : integer := 338;
 
  constant C_HDR_SIZE         : integer := 407;
 
 
 
 
 
  -- warning! this parameter heavily affects memory size required
 
  -- warning! this parameter heavily affects memory size required
 
  -- if expected image width is known change this parameter to match this
 
  -- if expected image width is known change this parameter to match this
 
  -- otherwise some onchip RAM will be wasted and never used
 
  -- otherwise some onchip RAM will be wasted and never used
 
  constant C_MAX_LINE_WIDTH   : integer := 1024;
 
  constant C_MAX_LINE_WIDTH   : integer := 640;
 
 
 
 
 
  -- 0=highest clock per pixel performance
 
  -- 0=highest clock per pixel performance
 
  -- 1=memory used by BUF_FIFO halved, speed performance reduced by circa 18%
 
  -- 1=memory used by BUF_FIFO halved, speed performance reduced by circa 18%
 
  constant C_MEMORY_OPTIMIZED : integer := 1;
 
  constant C_MEMORY_OPTIMIZED : integer := 1;
 
 
 
 

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