This is an automated email from the git hooks/post-receive script.
Git pushed a commit to branch master
in repository ffmpeg.
The following commit(s) were added to refs/heads/master by this push:
new b87602a63a swscale/riscv: fix uyvy/yuyv to yuv422p on odd widths
b87602a63a is described below
commit b87602a63a52b0f7f968fd314f02be14acde16b7
Author: Hongyan Wang <[email protected]>
AuthorDate: Thu Sep 17 15:47:14 2026 +0800
Commit: michaelni <[email protected]>
CommitDate: Sun Sep 27 12:06:07 2026 +0000
swscale/riscv: fix uyvy/yuyv to yuv422p on odd widths
The vector loop writes all luma samples, but only width / 2 chroma
samples. For odd widths, the last U and V samples are left untouched,
unlike the C implementations which use AV_CEIL_RSHIFT(width, 1).
Write the remaining U/V samples in a scalar tail for both packed
formats. Keep the existing vector loop and row stride adjustments.
Fixes the uyvytoyuv422_rvv_i32 and yuyvtoyuv422_rvv_i32 failures in
checkasm-sw_rgb.
Signed-off-by: Hongyan Wang <[email protected]>
Co-authored-by: YuanSheng <[email protected]>
Co-authored-by: Fei Zhang <[email protected]>
---
libswscale/riscv/rgb2rgb_rvv.S | 14 +++++++++++---
1 file changed, 11 insertions(+), 3 deletions(-)
diff --git a/libswscale/riscv/rgb2rgb_rvv.S b/libswscale/riscv/rgb2rgb_rvv.S
index a1a927b00f..b945d16bf1 100644
--- a/libswscale/riscv/rgb2rgb_rvv.S
+++ b/libswscale/riscv/rgb2rgb_rvv.S
@@ -132,7 +132,7 @@ func ff_deinterleave_bytes_rvv, zve32x, zba
ret
endfunc
-.macro yuy2_to_i422p luma, chroma
+.macro yuy2_to_i422p luma, chroma, chroma_offset
lpad 0
srai t4, a4, 1 // pixel width -> chroma width
lw t6, (sp)
@@ -163,6 +163,14 @@ endfunc
add a0, t0, a0
bnez t4, 2b
+ andi t0, a4, 1
+ beqz t0, 3f
+ // Odd widths need one final U/V sample.
+ lbu t0, \chroma_offset - 2(a3)
+ lbu t1, \chroma_offset(a3)
+ sb t0, (a1)
+ sb t1, (a2)
+3:
add a3, a3, t6
add a0, a0, a6
add a1, a1, a7
@@ -173,9 +181,9 @@ endfunc
.endm
func ff_uyvytoyuv422_rvv, zve32x, b
- yuy2_to_i422p v20, v16
+ yuy2_to_i422p v20, v16, 0
endfunc
func ff_yuyvtoyuv422_rvv, zve32x, b
- yuy2_to_i422p v16, v20
+ yuy2_to_i422p v16, v20, 1
endfunc
--
To stop receiving notification emails like this one, please contact
[email protected].
_______________________________________________
ffmpeg-cvslog mailing list -- [email protected]
To unsubscribe send an email to [email protected]
