Originally committed as revision 20729 to svn://svn.ffmpeg.org/ffmpeg/trunk
/* Version 3.98 and later files */
/* Update the adaption coefficients */
- absres = (res < 0 ? -res : res);
-
- if (absres > (f->avg * 3))
- *f->adaptcoeffs = ((res >> 25) & 64) - 32;
- else if (absres > (f->avg * 4) / 3)
- *f->adaptcoeffs = ((res >> 26) & 32) - 16;
- else if (absres > 0)
- *f->adaptcoeffs = ((res >> 27) & 16) - 8;
+ absres = FFABS(res);
+ if (absres)
+ *f->adaptcoeffs = ((res & (1<<31)) - (1<<30)) >> (25 + (absres <= f->avg*3) + (absres <= f->avg*4/3));
else
*f->adaptcoeffs = 0;