Thread (19 messages) 19 messages, 4 authors, 2022-07-04

Re: [PATCH 3/7] media: hantro: HEVC: Fix chroma offset computation

From: Paul Kocialkowski <hidden>
Date: 2022-07-01 08:47:19
Also in: linux-media, linux-rockchip, linux-staging, linux-sunxi, lkml

Hi Benjamin,

On Fri 17 Jun 22, 13:57, Benjamin Gaignard wrote:
quoted hunk ↗ jump to hunk
The chroma offset depends of the bitstream depth.
Make sure that ctx->bit_depth is used to compute it.

Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
---
 drivers/staging/media/hantro/hantro_g2_hevc_dec.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/staging/media/hantro/hantro_g2_hevc_dec.c b/drivers/staging/media/hantro/hantro_g2_hevc_dec.c
index 9eac133bda68..8407ad45b7b7 100644
--- a/drivers/staging/media/hantro/hantro_g2_hevc_dec.c
+++ b/drivers/staging/media/hantro/hantro_g2_hevc_dec.c
@@ -12,7 +12,7 @@
 
 static size_t hantro_hevc_chroma_offset(struct hantro_ctx *ctx)
 {
-	return ctx->dst_fmt.width * ctx->dst_fmt.height;
+	return ctx->dst_fmt.width * ctx->dst_fmt.height * ctx->bit_depth / 8;
Is this a case for DIV_ROUND_UP or are you sure the rounded-down size is always
sufficient?

Cheers,

Paul
 }
 
 static size_t hantro_hevc_motion_vectors_offset(struct hantro_ctx *ctx)
-- 
2.32.0
-- 
Paul Kocialkowski, Bootlin
Embedded Linux and kernel engineering
https://bootlin.com
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