Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18;
From:   Stanimir Varbanov <stanimir.varbanov@linaro.org>
To:     linux-media@vger.kernel.org, linux-kernel@vger.kernel.org,
        linux-arm-msm@vger.kernel.org, linux-arm-kernel@lists.infradead.org
Cc:     Mauro Carvalho Chehab <mchehab@kernel.org>,
        Kyungmin Park <kyungmin.park@samsung.com>,
        Kamil Debski <kamil@wypas.org>,
        Jeongtae Park <jtp.park@samsung.com>,
        Andrzej Hajda <a.hajda@samsung.com>,
        Ezequiel Garcia <ezequiel@collabora.com>,
        Maheshwar Ajja <majja@codeaurora.org>,
        Nicolas Dufresne <nicolas@ndufresne.ca>,
        Stanimir Varbanov <stanimir.varbanov@linaro.org>
Subject: [PATCH v2 4/6] venus: venc: Add support for frame-skip mode v4l2 control
Date:   Tue, 21 Jul 2020 10:45:36 +0300
Message-Id: <20200721074538.505-5-stanimir.varbanov@linaro.org>
In-Reply-To: <20200721074538.505-1-stanimir.varbanov@linaro.org>
References: <20200721074538.505-1-stanimir.varbanov@linaro.org>
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

This adds support for frame-skip-mode standard v4l2 control in
encoder driver. The control is implemented based on the
combination of client selected bitrate-mode and frame-skip-mode.
Once The client selected bitrate-mode (constant or variable) and
the frame-skip-mode is not disabled we set variable framerate for
rate controller.

Signed-off-by: Stanimir Varbanov <stanimir.varbanov@linaro.org>
---
 drivers/media/platform/qcom/venus/core.h       |  1 +
 drivers/media/platform/qcom/venus/venc.c       |  6 ++++--
 drivers/media/platform/qcom/venus/venc_ctrls.c | 12 +++++++++++-
 3 files changed, 16 insertions(+), 3 deletions(-)

diff --git a/drivers/media/platform/qcom/venus/core.h b/drivers/media/platform/qcom/venus/core.h
index 1bac30d4cf50..72e171ee05a8 100644
--- a/drivers/media/platform/qcom/venus/core.h
+++ b/drivers/media/platform/qcom/venus/core.h
@@ -202,6 +202,7 @@ struct venc_controls {
 	u32 bitrate_peak;
 	u32 rc_enable;
 	u32 const_quality;
+	u32 frame_skip_mode;
 
 	u32 h264_i_period;
 	u32 h264_entropy_mode;
diff --git a/drivers/media/platform/qcom/venus/venc.c b/drivers/media/platform/qcom/venus/venc.c
index 4c30c3f3369e..e4bbaae9975a 100644
--- a/drivers/media/platform/qcom/venus/venc.c
+++ b/drivers/media/platform/qcom/venus/venc.c
@@ -739,9 +739,11 @@ static int venc_set_properties(struct venus_inst *inst)
 	if (!ctr->rc_enable)
 		rate_control = HFI_RATE_CONTROL_OFF;
 	else if (ctr->bitrate_mode == V4L2_MPEG_VIDEO_BITRATE_MODE_VBR)
-		rate_control = HFI_RATE_CONTROL_VBR_CFR;
+		rate_control = ctr->frame_skip_mode ? HFI_RATE_CONTROL_VBR_VFR :
+						      HFI_RATE_CONTROL_VBR_CFR;
 	else if (ctr->bitrate_mode == V4L2_MPEG_VIDEO_BITRATE_MODE_CBR)
-		rate_control = HFI_RATE_CONTROL_CBR_CFR;
+		rate_control = ctr->frame_skip_mode ? HFI_RATE_CONTROL_CBR_VFR :
+						      HFI_RATE_CONTROL_CBR_CFR;
 	else if (ctr->bitrate_mode == V4L2_MPEG_VIDEO_BITRATE_MODE_CQ)
 		rate_control = HFI_RATE_CONTROL_CQ;
 
diff --git a/drivers/media/platform/qcom/venus/venc_ctrls.c b/drivers/media/platform/qcom/venus/venc_ctrls.c
index 97a1e821c07e..440878928ab1 100644
--- a/drivers/media/platform/qcom/venus/venc_ctrls.c
+++ b/drivers/media/platform/qcom/venus/venc_ctrls.c
@@ -205,6 +205,9 @@ static int venc_op_s_ctrl(struct v4l2_ctrl *ctrl)
 	case V4L2_CID_MPEG_VIDEO_CONSTANT_QUALITY:
 		ctr->const_quality = ctrl->val;
 		break;
+	case V4L2_CID_MPEG_VIDEO_FRAME_SKIP_MODE:
+		ctr->frame_skip_mode = ctrl->val;
+		break;
 	default:
 		return -EINVAL;
 	}
@@ -220,7 +223,7 @@ int venc_ctrl_init(struct venus_inst *inst)
 {
 	int ret;
 
-	ret = v4l2_ctrl_handler_init(&inst->ctrl_handler, 32);
+	ret = v4l2_ctrl_handler_init(&inst->ctrl_handler, 33);
 	if (ret)
 		return ret;
 
@@ -363,6 +366,13 @@ int venc_ctrl_init(struct venus_inst *inst)
 	v4l2_ctrl_new_std(&inst->ctrl_handler, &venc_ctrl_ops,
 			  V4L2_CID_MPEG_VIDEO_CONSTANT_QUALITY, 0, 100, 1, 0);
 
+	v4l2_ctrl_new_std_menu(&inst->ctrl_handler, &venc_ctrl_ops,
+			       V4L2_CID_MPEG_VIDEO_FRAME_SKIP_MODE,
+			       V4L2_MPEG_VIDEO_FRAME_SKIP_MODE_BUF_LIMIT,
+			       ~((1 << V4L2_MPEG_VIDEO_FRAME_SKIP_MODE_DISABLED) |
+			       (1 << V4L2_MPEG_VIDEO_FRAME_SKIP_MODE_BUF_LIMIT)),
+			       V4L2_MPEG_VIDEO_FRAME_SKIP_MODE_DISABLED);
+
 	ret = inst->ctrl_handler.error;
 	if (ret)
 		goto err;
-- 
2.17.1