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| author | Rémi Denis-Courmont <remi@remlab.net> | 2022-09-26 17:52:36 +0300 |
|---|---|---|
| committer | Lynne <dev@lynne.ee> | 2022-09-27 13:19:52 +0200 |
| commit | 9aeb6aca3a9fa8caf8db263de4fa9f8077ba6634 (patch) | |
| tree | c86b002238f11cf12553a51f669607be7bd79bf3 /libavutil/riscv | |
| parent | 47ce9735cc8362ea6b3a508dd660233af28d77ba (diff) | |
| download | ffmpeg-9aeb6aca3a9fa8caf8db263de4fa9f8077ba6634.tar.gz | |
lavu/floatdsp: RISC-V V vector_fmul_reverse
Diffstat (limited to 'libavutil/riscv')
| -rw-r--r-- | libavutil/riscv/float_dsp_init.c | 3 | ||||
| -rw-r--r-- | libavutil/riscv/float_dsp_rvv.S | 21 |
2 files changed, 24 insertions, 0 deletions
diff --git a/libavutil/riscv/float_dsp_init.c b/libavutil/riscv/float_dsp_init.c index a1cd180cdc..b99e3080c9 100644 --- a/libavutil/riscv/float_dsp_init.c +++ b/libavutil/riscv/float_dsp_init.c @@ -33,6 +33,8 @@ void ff_vector_fmul_scalar_rvv(float *dst, const float *src, float mul, int len); void ff_vector_fmul_add_rvv(float *dst, const float *src0, const float *src1, const float *src2, int len); +void ff_vector_fmul_reverse_rvv(float *dst, const float *src0, + const float *src1, int len); void ff_butterflies_float_rvv(float *v1, float *v2, int len); void ff_vector_dmul_rvv(double *dst, const double *src0, const double *src1, @@ -52,6 +54,7 @@ av_cold void ff_float_dsp_init_riscv(AVFloatDSPContext *fdsp) fdsp->vector_fmac_scalar = ff_vector_fmac_scalar_rvv; fdsp->vector_fmul_scalar = ff_vector_fmul_scalar_rvv; fdsp->vector_fmul_add = ff_vector_fmul_add_rvv; + fdsp->vector_fmul_reverse = ff_vector_fmul_reverse_rvv; fdsp->butterflies_float = ff_butterflies_float_rvv; } diff --git a/libavutil/riscv/float_dsp_rvv.S b/libavutil/riscv/float_dsp_rvv.S index a721c44667..fbd2777463 100644 --- a/libavutil/riscv/float_dsp_rvv.S +++ b/libavutil/riscv/float_dsp_rvv.S @@ -93,6 +93,27 @@ func ff_vector_fmul_add_rvv, zve32f ret endfunc +// (a0) = (a1) * reverse(a2) [0..a3-1] +func ff_vector_fmul_reverse_rvv, zve32f + sh2add a2, a3, a2 + li t2, -4 // byte stride + addi a2, a2, -4 +1: + vsetvli t0, a3, e32, m1, ta, ma + slli t1, t0, 2 + vle32.v v16, (a1) + sub a3, a3, t0 + vlse32.v v24, (a2), t2 + add a1, a1, t1 + vfmul.vv v16, v16, v24 + sub a2, a2, t1 + vse32.v v16, (a0) + add a0, a0, t1 + bnez a3, 1b + + ret +endfunc + // (a0) = (a0) + (a1), (a1) = (a0) - (a1) [0..a2-1] func ff_butterflies_float_rvv, zve32f 1: |