Int CVTCDecoder::decUpdateStateAC(Int c)
{
Int err;
Int x, y;
Int nc;
Int xc[3], yc[3];
err=0;
/* loop through DC */
noteDetail("Updating state of AC bands....");
for (x = 0; x < mzte_codec.m_iDCWidth; ++x)
for (y = 0; y < mzte_codec.m_iDCHeight; ++y)
{
if ((nc = findChild(x, y, xc, yc,c)) != 3)
{
noteError("DC band coefficient has %d children instead of 3.", nc);
exit(-1);
}
updateCoeffAndDescState(xc[0], yc[0], c);
updateCoeffAndDescState(xc[1], yc[1], c);
updateCoeffAndDescState(xc[2], yc[2], c);
}
noteDetail("Completed updating state of AC bands.");
return err;
}
/* hjlee 0901 */
Int CVTCDecoder::decUpdateStateAC_spa(Int c)
{
Int err,h,w,hstart,wstart,hend,wend;
err=0;
/* loop through DC */
noteDetail("Updating state of AC bands (difference)....");
hstart=mzte_codec.m_SPlayer[c].height/2;
wstart=mzte_codec.m_SPlayer[c].width/2;
hend=mzte_codec.m_SPlayer[c].height;
wend=mzte_codec.m_SPlayer[c].width;
for(h=0;h<hstart;h++)
for(w=wstart;w<wend;w++)
updateCoeffAndDescState(w, h, c);
for(h=hstart;h<hend;h++)
for(w=0;w<wend;w++)
updateCoeffAndDescState(w, h, c);
noteDetail("Completed updating state of AC bands.");
return err;
}
Void CVTCCommon::updateCoeffAndDescState(Int x, Int y, Int c)
{
Int i;
Int xc[4], yc[4]; /* coords of children */
Int nc; /* number of children */
/* Are we at a leaf? */
if ((nc = findChild(x, y, xc, yc, c)) > 0)
{
/* No - mark descendents in all branches */
for (i = 0; i < nc; ++i)
updateCoeffAndDescState(xc[i], yc[i], c);
}
/* Updates state in coeffTable */
updateState(x, y, COEFF_TYPE(x, y, c), c);
}