diff options
Diffstat (limited to 'libswscale')
| -rw-r--r-- | libswscale/swscale.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/libswscale/swscale.c b/libswscale/swscale.c index 222c0c0136..079ed31cd1 100644 --- a/libswscale/swscale.c +++ b/libswscale/swscale.c @@ -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 |