linux-kernel - [PATCH] media: venus: change the default value of GOP size

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Message-Id: <1542013562-18968-1-git-send-email-mgottam@codeaurora.org>
Date:   Mon, 12 Nov 2018 14:36:02 +0530
From:   Malathi Gottam <mgottam@...eaurora.org>
To:     stanimir.varbanov@...aro.org, hverkuil@...all.nl,
        mchehab@...nel.org
Cc:     linux-media@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-msm@...r.kernel.org, acourbot@...omium.org,
        vgarodia@...eaurora.org, mgottam@...eaurora.org
Subject: [PATCH] media: venus: change the default value of GOP size

When the client doesn't explicitly set any GOP size, current
default value is low and overshoots bitrate beyond  tolerance.
Hence default value is modified so as to have intra period of 1sec.

Signed-off-by: Malathi Gottam <mgottam@...eaurora.org>
---
 drivers/media/platform/qcom/venus/venc_ctrls.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/media/platform/qcom/venus/venc_ctrls.c b/drivers/media/platform/qcom/venus/venc_ctrls.c
index 45910172..e6a43e9 100644
--- a/drivers/media/platform/qcom/venus/venc_ctrls.c
+++ b/drivers/media/platform/qcom/venus/venc_ctrls.c
@@ -295,7 +295,7 @@ int venc_ctrl_init(struct venus_inst *inst)
 		0, INTRA_REFRESH_MBS_MAX, 1, 0);
 
 	v4l2_ctrl_new_std(&inst->ctrl_handler, &venc_ctrl_ops,
-		V4L2_CID_MPEG_VIDEO_GOP_SIZE, 0, (1 << 16) - 1, 1, 12);
+		V4L2_CID_MPEG_VIDEO_GOP_SIZE, 0, (1 << 16) - 1, 1, 30);
 
 	v4l2_ctrl_new_std(&inst->ctrl_handler, &venc_ctrl_ops,
 		V4L2_CID_MPEG_VIDEO_VPX_MIN_QP, 1, 128, 1, 1);
-- 
1.9.1