[FFmpeg-devel] [PATCH 1/2] lavc/lpc: fix off-by-one in R-V V compute_autocorr

[Rémi Denis-Courmont]

---
 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