diff options
| author | sunyuechi <sunyuechi@iscas.ac.cn> | 2023-12-18 22:53:39 +0800 |
|---|---|---|
| committer | Rémi Denis-Courmont <remi@remlab.net> | 2023-12-22 17:40:00 +0200 |
| commit | 3d39b8d4e7ca43baafa3b4cd5784dd64197dd232 (patch) | |
| tree | 904dd6169b9527a532c64ee083f840f00a35b2b0 | |
| parent | 0c6203c97a99f69dbaa6e4011d48c331e1111f5e (diff) | |
| download | ffmpeg-3d39b8d4e7ca43baafa3b4cd5784dd64197dd232.tar.gz | |
lavc/takdsp: R-V V decorrelate_sm
C908:
decorrelate_sm_c: 130.0
decorrelate_sm_rvv_i32: 43.2
Signed-off-by: Rémi Denis-Courmont <remi@remlab.net>
(with minor changes)
| -rw-r--r-- | libavcodec/riscv/takdsp_init.c | 2 | ||||
| -rw-r--r-- | libavcodec/riscv/takdsp_rvv.S | 18 |
2 files changed, 20 insertions, 0 deletions
diff --git a/libavcodec/riscv/takdsp_init.c b/libavcodec/riscv/takdsp_init.c index 2d5c974459..4312c8d99d 100644 --- a/libavcodec/riscv/takdsp_init.c +++ b/libavcodec/riscv/takdsp_init.c @@ -27,6 +27,7 @@ void ff_decorrelate_ls_rvv(const int32_t *p1, int32_t *p2, int length); void ff_decorrelate_sr_rvv(int32_t *p1, const int32_t *p2, int length); +void ff_decorrelate_sm_rvv(int32_t *p1, int32_t *p2, int length); av_cold void ff_takdsp_init_riscv(TAKDSPContext *dsp) { @@ -36,6 +37,7 @@ av_cold void ff_takdsp_init_riscv(TAKDSPContext *dsp) if ((flags & AV_CPU_FLAG_RVV_I32) && (flags & AV_CPU_FLAG_RVB_ADDR)) { dsp->decorrelate_ls = ff_decorrelate_ls_rvv; dsp->decorrelate_sr = ff_decorrelate_sr_rvv; + dsp->decorrelate_sm = ff_decorrelate_sm_rvv; } #endif } diff --git a/libavcodec/riscv/takdsp_rvv.S b/libavcodec/riscv/takdsp_rvv.S index 65672cdfb8..b593d9139a 100644 --- a/libavcodec/riscv/takdsp_rvv.S +++ b/libavcodec/riscv/takdsp_rvv.S @@ -47,3 +47,21 @@ func ff_decorrelate_sr_rvv, zve32x bnez a2, 1b ret endfunc + +func ff_decorrelate_sm_rvv, zve32x +1: + vsetvli t0, a2, e32, m8, ta, ma + vle32.v v8, (a1) + sub a2, a2, t0 + vle32.v v0, (a0) + vsra.vi v16, v8, 1 + vsub.vv v0, v0, v16 + vse32.v v0, (a0) + sh2add a0, t0, a0 + vadd.vv v8, v0, v8 + vse32.v v8, (a1) + sh2add a1, t0, a1 + bnez a2, 1b + + ret +endfunc |