diff options
Diffstat (limited to 'libavfilter/x86/vf_blend.asm')
| -rw-r--r-- | libavfilter/x86/vf_blend.asm | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/libavfilter/x86/vf_blend.asm b/libavfilter/x86/vf_blend.asm index 50b5f8a..a5ea74c 100644 --- a/libavfilter/x86/vf_blend.asm +++ b/libavfilter/x86/vf_blend.asm @@ -111,6 +111,13 @@ BLEND_END psrlw %1, 8 ; 00xx00xx a * b / 255 %endmacro +%macro SCREEN 4 ; a, b, pw_1, pw_255 + pxor %1, %4 ; 00xx00xx 255 - a + pxor %2, %4 + MULTIPLY %1, %2, %3 + pxor %1, %4 ; 00xx00xx 255 - x / 255 +%endmacro + BLEND_INIT multiply, 4 pxor m2, m2 mova m3, [pw_1] @@ -134,6 +141,28 @@ BLEND_INIT multiply, 4 jl .loop BLEND_END +BLEND_INIT screen, 5 + pxor m2, m2 + mova m3, [pw_1] + mova m4, [pw_255] +.nextrow: + mov xq, widthq + + .loop: + movh m0, [topq + xq] ; 0000xxxx + movh m1, [bottomq + xq] + punpcklbw m0, m2 ; 00xx00xx + punpcklbw m1, m2 + + SCREEN m0, m1, m3, m4 + + packuswb m0, m0 ; 0000xxxx + movh [dstq + xq], m0 + add xq, mmsize / 2 + + jl .loop +BLEND_END + BLEND_INIT average, 3 pxor m2, m2 .nextrow: |
