linux-kernel - [PATCH] venus: vdec: update output buffer size during vdec_s

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Message-Id: <20210825084434.32309-1-mansur@codeaurora.org>
Date:   Wed, 25 Aug 2021 14:14:34 +0530
From:   Mansur Alisha Shaik <mansur@...eaurora.org>
To:     linux-media@...r.kernel.org, stanimir.varbanov@...aro.org
Cc:     linux-kernel@...r.kernel.org, linux-arm-msm@...r.kernel.org,
        vgarodia@...eaurora.org, dikshita@...eaurora.org,
        nhebert@...omium.org, Mansur Alisha Shaik <mansur@...eaurora.org>
Subject: [PATCH] venus: vdec: update output buffer size during vdec_s_fmt()

Video driver maintains an internal context for the output buffer size.
During S_fmt() on capture plane, the output buffer size is not updated
in driver context. As a result, during buf_prepare(), the size of the
vb2_plane and internal size of the buffer, as maintained by the driver,
does not match. This leads to buf_prepare() failure.
Update the instance context for the output buffer size during s_fmt().

Signed-off-by: Mansur Alisha Shaik <mansur@...eaurora.org>
---
 drivers/media/platform/qcom/venus/vdec.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/media/platform/qcom/venus/vdec.c b/drivers/media/platform/qcom/venus/vdec.c
index 198e47eb63f4..c129b061a325 100644
--- a/drivers/media/platform/qcom/venus/vdec.c
+++ b/drivers/media/platform/qcom/venus/vdec.c
@@ -332,8 +332,11 @@ static int vdec_s_fmt(struct file *file, void *fh, struct v4l2_format *f)
 
 	if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
 		inst->fmt_out = fmt;
-	else if (f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
+	else if (f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) {
 		inst->fmt_cap = fmt;
+		inst->output2_buf_size =
+			venus_helper_get_framesz(pixfmt_cap, orig_pixmp.width, orig_pixmp.height);
+	}
 
 	return 0;
 }
-- 
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