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

git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@29978 b3059339-0415-0410-9bf9-f77b7e298cf2
This commit is contained in:
ramiro 2009-12-07 03:52:55 +00:00
parent 71f9e96fc7
commit b5b701c544
1 changed files with 6 additions and 0 deletions
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6
libswscale/swscale.c
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@ -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