LAV
/
FFmpeg
1
0
Fork 0
Code

lavc/aacpsdsp: unroll R-V V stereo interpolate

This commit is contained in:
Rémi Denis-Courmont 2023-09-29 19:04:38 +03:00
parent 27d74fc1ef
commit c270928cc0
1 changed files with 23 additions and 23 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

46
libavcodec/riscv/aacpsdsp_rvv.S
View File

@ -223,7 +223,7 @@ func ff_ps_hybrid_synthesis_deint_rvv, zve32x
endfunc
func ff_ps_stereo_interpolate_rvv, zve32f
vsetvli t0, zero, e32, m1, ta, ma
vsetvli t0, zero, e32, m2, ta, ma
vid.v v24
flw ft0, (a2)
vadd.vi v24, v24, 1 // v24[i] = i + 1
@ -232,43 +232,43 @@ func ff_ps_stereo_interpolate_rvv, zve32f
flw ft2, 8(a2)
vfmv.v.f v16, ft0
flw ft3, 12(a2)
vfmv.v.f v17, ft1
vfmv.v.f v18, ft1
flw ft0, (a3)
vfmv.v.f v18, ft2
vfmv.v.f v20, ft2
flw ft1, 4(a3)
vfmv.v.f v19, ft3
vfmv.v.f v22, ft3
flw ft2, 8(a3)
flw ft3, 12(a3)
fcvt.s.wu ft4, t0 // (float)(vlenb / sizeof (float))
vfmacc.vf v16, ft0, v24 // h0 += (i + 1) * h0_step
fmul.s ft0, ft0, ft4
vfmacc.vf v17, ft1, v24
vfmacc.vf v18, ft1, v24
fmul.s ft1, ft1, ft4
vfmacc.vf v18, ft2, v24
vfmacc.vf v20, ft2, v24
fmul.s ft2, ft2, ft4
vfmacc.vf v19, ft3, v24
vfmacc.vf v22, ft3, v24
fmul.s ft3, ft3, ft4
1:
vsetvli t0, a4, e32, m1, ta, ma
vlseg2e32.v v8, (a0) // v8:l_re, v9:l_im
vsetvli t0, a4, e32, m2, ta, ma
vlseg2e32.v v0, (a0) // v0:l_re, v2:l_im
sub a4, a4, t0
vlseg2e32.v v10, (a1) // v10:r_re, v11:r_im
vfmul.vv v12, v8, v16
vfmul.vv v13, v9, v16
vfmul.vv v14, v8, v17
vfmul.vv v15, v9, v17
vfmacc.vv v12, v10, v18
vfmacc.vv v13, v11, v18
vfmacc.vv v14, v10, v19
vfmacc.vv v15, v11, v19
vsseg2e32.v v12, (a0)
vlseg2e32.v v4, (a1) // v4:r_re, v6:r_im
vfmul.vv v8, v0, v16
vfmul.vv v10, v2, v16
vfmul.vv v12, v0, v18
vfmul.vv v14, v2, v18
vfmacc.vv v8, v4, v20
vfmacc.vv v10, v6, v20
vfmacc.vv v12, v4, v22
vfmacc.vv v14, v6, v22
vsseg2e32.v v8, (a0)
sh3add a0, t0, a0
vsseg2e32.v v14, (a1)
vsseg2e32.v v12, (a1)
sh3add a1, t0, a1
vfadd.vf v16, v16, ft0 // h0 += (vlenb / sizeof (float)) * h0_step
vfadd.vf v17, v17, ft1
vfadd.vf v18, v18, ft2
vfadd.vf v19, v19, ft3
vfadd.vf v18, v18, ft1
vfadd.vf v20, v20, ft2
vfadd.vf v22, v22, ft3
bnez a4, 1b
ret