diff options
| -rw-r--r-- | libswscale/aarch64/output.S | 32 |
1 files changed, 12 insertions, 20 deletions
diff --git a/libswscale/aarch64/output.S b/libswscale/aarch64/output.S index 90d3b57b10..25bf28b6e4 100644 --- a/libswscale/aarch64/output.S +++ b/libswscale/aarch64/output.S @@ -38,29 +38,21 @@ function ff_yuv2planeX_8_neon, export=1 add x12, x12, x7, lsl #1 // &src[j+1][i] ld1 {v5.8H}, [x11] // read 8x16-bit @ src[j ][i + {0..7}]: A,B,C,D,E,F,G,H ld1 {v6.8H}, [x12] // read 8x16-bit @ src[j+1][i + {0..7}]: I,J,K,L,M,N,O,P - ldr w11, [x10], #4 // read 2x16-bit coeffs (X, Y) at (filter[j], filter[j+1]) - zip1 v16.8H, v5.8H, v6.8H // A,I,B,J,C,K,D,L - zip2 v17.8H, v5.8H, v6.8H // E,M,F,N,F,O,H,P - dup v7.4S, w11 // X,Y,X,Y,X,Y,X,Y - smull v18.4S, v16.4H, v7.4H // A.X I.Y B.X J.Y - smull v20.4S, v17.4H, v7.4H // E.X M.Y F.X N.Y - smull2 v19.4S, v16.8H, v7.8H // C.X K.Y D.X L.Y - smull2 v21.4S, v17.8H, v7.8H // G.X O.Y H.X P.Y - addp v16.4S, v18.4S, v19.4S // A.X+I.Y B.X+J.Y C.X+K.Y D.X+L.Y - addp v17.4S, v20.4S, v21.4S // E.X+M.Y F.X+N.Y F.X+O.Y H.X+P.Y - add v3.4S, v3.4S, v16.4S // update val accumulator for part 1 - add v4.4S, v4.4S, v17.4S // update val accumulator for part 2 + ld1r {v7.8H}, [x10], #2 // read 1x16-bit coeff X at filter[j ] and duplicate across lanes + ld1r {v8.8H}, [x10], #2 // read 1x16-bit coeff Y at filter[j+1] and duplicate across lanes + smlal v3.4S, v5.4H, v7.4H // val0 += {A,B,C,D} * X + smlal2 v4.4S, v5.8H, v7.8H // val1 += {E,F,G,H} * X + smlal v3.4S, v6.4H, v8.4H // val0 += {I,J,K,L} * Y + smlal2 v4.4S, v6.8H, v8.8H // val1 += {M,N,O,P} * Y subs w8, w8, #2 // tmpfilterSize -= 2 b.gt 3b // loop until filterSize consumed - sshr v3.4S, v3.4S, #19 // val>>19 (part 1) - sshr v4.4S, v4.4S, #19 // val>>19 (part 2) - sqxtun v3.4H, v3.4S // clip16(val>>19) (part 1) - sqxtun v4.4H, v4.4S // clip16(val>>19) (part 2) - mov v3.D[1], v4.D[0] // merge part 1 and part 2 - uqxtn v3.8B, v3.8H // clip8(val>>19) - st1 {v3.1D}, [x3], #8 // write to destination - add x7, x7, #8 // i += 8 + + sqshrun v3.4h, v3.4s, #16 // clip16(val0>>16) + sqshrun2 v3.8h, v4.4s, #16 // clip16(val1>>16) + uqshrn v3.8b, v3.8h, #3 // clip8(val>>19) + st1 {v3.8b}, [x3], #8 // write to destination subs w4, w4, #8 // dstW -= 8 + add x7, x7, #8 // i += 8 b.gt 2b // loop until width consumed ret endfunc |