* [FFmpeg-devel] [PATCH] checkasm/hevc_sao.c: add sign for sao offset_val (PR #20730)
@ 2025-10-21 7:27 CheryDan via ffmpeg-devel
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From: CheryDan via ffmpeg-devel @ 2025-10-21 7:27 UTC (permalink / raw)
To: ffmpeg-devel; +Cc: CheryDan
PR #20730 opened by CheryDan
URL: https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/20730
Patch URL: https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/20730.patch
This patch adds a sign bit to the randomly generated sao_offset_val.
>From 5fff7ab8459576885b3c0e0ef62cd7b7a2213c1c Mon Sep 17 00:00:00 2001
From: daichengrong <daichengrong@iscas.ac.cn>
Date: Tue, 21 Oct 2025 15:18:26 +0800
Subject: [PATCH] checkasm/hevc_sao.c: add sign for sao offset_val
Signed-off-by: daichengrong <daichengrong@iscas.ac.cn>
---
tests/checkasm/hevc_sao.c | 12 ++++++++----
1 file changed, 8 insertions(+), 4 deletions(-)
diff --git a/tests/checkasm/hevc_sao.c b/tests/checkasm/hevc_sao.c
index 37f6ba8c5c..990df28313 100644
--- a/tests/checkasm/hevc_sao.c
+++ b/tests/checkasm/hevc_sao.c
@@ -53,13 +53,17 @@ static const uint32_t sao_size[5] = {8, 16, 32, 48, 64};
int k; \
if (bit_depth == 8) { \
for (k = 0; k < size; k++) { \
- uint8_t r = rnd() % max_offset; \
- buf[k] = r; \
+ uint8_t r = rnd(); \
+ uint8_t sign = r & max_offset; \
+ uint8_t val = r % max_offset; \
+ buf[k] = sign ? val : -val; \
} \
} else { \
for (k = 0; k < size; k++) { \
- uint16_t r = rnd() % max_offset; \
- buf[k] = r; \
+ uint16_t r = rnd(); \
+ uint16_t sign = r & max_offset; \
+ uint16_t val = r % max_offset; \
+ buf[k] = sign ? val : -val; \
} \
} \
} while (0)
--
2.49.1
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2025-10-21 7:27 [FFmpeg-devel] [PATCH] checkasm/hevc_sao.c: add sign for sao offset_val (PR #20730) CheryDan via ffmpeg-devel
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