ffmpeg | branch: master | Rémi Denis-Courmont <r...@remlab.net> | Sun May 26 08:25:16 2024 +0300| [c53d42380d3f57c318fa76329c8fdcb47a05093a] | committer: Rémi Denis-Courmont
lavc/lpc: optimise RVV vector type for compute_autocorr On SpacemiT X60 (with len == 4000): autocorr_10_c: 2303.7 autocorr_10_rvv_f64: 1411.5 (before) autocorr_10_rvv_f64: 842.2 (after) > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=c53d42380d3f57c318fa76329c8fdcb47a05093a --- libavcodec/riscv/lpc_init.c | 3 ++- libavcodec/riscv/lpc_rvv.S | 5 +++-- 2 files changed, 5 insertions(+), 3 deletions(-) diff --git a/libavcodec/riscv/lpc_init.c b/libavcodec/riscv/lpc_init.c index 08efae4da7..d9bcbbe604 100644 --- a/libavcodec/riscv/lpc_init.c +++ b/libavcodec/riscv/lpc_init.c @@ -36,7 +36,8 @@ av_cold void ff_lpc_init_riscv(LPCContext *c) if ((flags & AV_CPU_FLAG_RVV_F64) && (flags & AV_CPU_FLAG_RVB_ADDR)) { c->lpc_apply_welch_window = ff_lpc_apply_welch_window_rvv; - if (ff_get_rv_vlenb() > c->max_order) + if ((flags & AV_CPU_FLAG_RVB_BASIC) && + ff_get_rv_vlenb() > c->max_order) c->lpc_compute_autocorr = ff_lpc_compute_autocorr_rvv; } #endif diff --git a/libavcodec/riscv/lpc_rvv.S b/libavcodec/riscv/lpc_rvv.S index 3fdf80ebed..8cf79963f1 100644 --- a/libavcodec/riscv/lpc_rvv.S +++ b/libavcodec/riscv/lpc_rvv.S @@ -86,10 +86,11 @@ func ff_lpc_apply_welch_window_rvv, zve64d ret endfunc -func ff_lpc_compute_autocorr_rvv, zve64d +func ff_lpc_compute_autocorr_rvv, zve64d, zbb addi a2, a2, 1 + vtype_vli t1, a2, t2, e64, ta, ma li t0, 1 - vsetvli zero, a2, e64, m8, ta, ma + vsetvl zero, a2, t1 fcvt.d.l ft0, t0 vle64.v v0, (a0) sh3add a0, a2, a0 # data += lag _______________________________________________ ffmpeg-cvslog mailing list ffmpeg-cvslog@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-cvslog To unsubscribe, visit link above, or email ffmpeg-cvslog-requ...@ffmpeg.org with subject "unsubscribe".
