huffvar.a

基于ti c55x序列dsp的jpeg算法中的哈夫解码的实现

      .include "fconst.inc"
      .def _JpegDecInitHufVars
      .def _JPD_TIF_meminit
  
      .text
      
_JpegDecInitHufVars:
	.dp 0
	XDP = XAR1                                  ;XDP = memTab[0].base
	bit(ST1, #ST1_CPL) = #0 
    AC0 = XAR0
    dbl(@(p_uvldtabdc)) = AC0
    AC0 = AC0 + #0x40
    dbl(@(p_uvldctltabdc)) = AC0
    AC0 = AC0 + #0x22
    dbl(@(p_uvldtabac)) = AC0
    AC0 = AC0 + #0x200
    dbl(@(p_uvldctltabac)) = AC0
    AC0 = AC0 + #0x22
    dbl(@(p_uvldlenmaxdc)) = AC0
    AC0 = AC0 + #0x2
    dbl(@(p_uvldlenmaxac)) = AC0    
	AC0 = #0
	@(d_decswflagin) = AC0
	@(d_decswflagout) = AC0
	@(d_decff00buffer) = AC0                                  ; init ff00buffer	
	bit(ST1, #ST1_CPL) = #1 
 
	return 

_JPD_TIF_meminit:
	bit(ST1, #ST1_CPL) = #0 
    .dp 0
    XDP = XAR0
    AC0 = XAR1
    AC3 = AC0 + #a_interm
    dbl(@(p_interm)) = AC3
    AC3 = AC0 + #d_interm2
    dbl(@(p_interm2)) = AC3
	bit(ST1, #ST1_CPL) = #1 
    return