From: "Rémi Denis-Courmont" <remi@remlab.net>
To: ffmpeg-devel@ffmpeg.org
Subject: [FFmpeg-devel] [PATCH 1/2] lavc/lpc: fix off-by-one in R-V V compute_autocorr
Date: Mon, 27 May 2024 18:59:45 +0300
Message-ID: <20240527155946.750660-1-remi@remlab.net> (raw)
---
libavcodec/riscv/lpc_init.c | 2 +-
libavcodec/riscv/lpc_rvv.S | 1 +
2 files changed, 2 insertions(+), 1 deletion(-)
diff --git a/libavcodec/riscv/lpc_init.c b/libavcodec/riscv/lpc_init.c
index f21eca4caa..d9bcbbe604 100644
--- a/libavcodec/riscv/lpc_init.c
+++ b/libavcodec/riscv/lpc_init.c
@@ -37,7 +37,7 @@ av_cold void ff_lpc_init_riscv(LPCContext *c)
c->lpc_apply_welch_window = ff_lpc_apply_welch_window_rvv;
if ((flags & AV_CPU_FLAG_RVB_BASIC) &&
- ff_get_rv_vlenb() >= c->max_order)
+ 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 024837102c..8cf79963f1 100644
--- a/libavcodec/riscv/lpc_rvv.S
+++ b/libavcodec/riscv/lpc_rvv.S
@@ -87,6 +87,7 @@ func ff_lpc_apply_welch_window_rvv, zve64d
endfunc
func ff_lpc_compute_autocorr_rvv, zve64d, zbb
+ addi a2, a2, 1
vtype_vli t1, a2, t2, e64, ta, ma
li t0, 1
vsetvl zero, a2, t1
--
2.45.1
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