From: Rémi Denis-Courmont <r...@remlab.net> --- libavutil/riscv/float_dsp_init.c | 2 ++ libavutil/riscv/float_dsp_rvv.S | 18 ++++++++++++++++++ 2 files changed, 20 insertions(+)
diff --git a/libavutil/riscv/float_dsp_init.c b/libavutil/riscv/float_dsp_init.c index 8539fe9ac5..2165394585 100644 --- a/libavutil/riscv/float_dsp_init.c +++ b/libavutil/riscv/float_dsp_init.c @@ -30,6 +30,7 @@ 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_butterflies_float_rvv(float *v1, float *v2, int len); void ff_vector_dmul_rvv(double *dst, const double *src0, const double *src1, int len); @@ -47,6 +48,7 @@ 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->butterflies_float = ff_butterflies_float_rvv; if (flags & AV_CPU_FLAG_ZVE64D) { fdsp->vector_dmul = ff_vector_dmul_rvv; diff --git a/libavutil/riscv/float_dsp_rvv.S b/libavutil/riscv/float_dsp_rvv.S index 27190c21ff..61beb868b0 100644 --- a/libavutil/riscv/float_dsp_rvv.S +++ b/libavutil/riscv/float_dsp_rvv.S @@ -98,6 +98,24 @@ func ff_vector_fmul_add_rvv ret endfunc +// (a0) = (a0) + (a1), (a1) = (a0) - (a1) [0..a2-1] +func ff_butterflies_float_rvv +1: vsetvli t0, a2, e32, m8, ta, ma + slli t1, t0, 2 + vle32.v v16, (a0) + vle32.v v24, (a1) + vfadd.vv v0, v16, v24 + vfsub.vv v8, v16, v24 + sub a2, a2, t0 + vse32.v v0, (a0) + add a0, a0, t1 + vse32.v v8, (a1) + add a1, a1, t1 + bnez a2, 1b + + ret +endfunc + // (a0) = (a1) * (a2) [0..a3-1] func ff_vector_dmul_rvv 1: vsetvli t0, a3, e64, m8, ta, ma -- 2.37.2 _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".