Document the differences between the two asm fragments in initMMX2HScaler().

Originally committed as revision 29978 to svn://svn.mplayerhq.hu/mplayer/trunk/libswscale
This commit is contained in:
Ramiro Polla 2009-12-07 03:52:55 +00:00
parent 445a9deea6
commit a8bcc7b42b

View File

@ -1697,6 +1697,12 @@ static int initMMX2HScaler(int dstW, int xInc, uint8_t *filterCode, int16_t *fil
int xpos, i;
// create an optimized horizontal scaling routine
/* This scaler is made of runtime-generated MMX2 code using specially
* tuned pshufw instructions. For every four output pixels, if four
* input pixels are enough for the fast bilinear scaling, then a chunk
* of fragmentB is used. If five input pixels are needed, then a chunk
* of fragmentA is used.
*/
//code fragment