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From 3df60f3d0615c011e91b7d6f39cb9123b2e96530 Mon Sep 17 00:00:00 2001
From: Dave Stevenson <dave.stevenson@raspberrypi.com>
Date: Mon, 20 Sep 2021 14:37:17 +0100
Subject: [PATCH] staging: bcm2835-codec: Add support for H&V Flips to
ISP
The ISP can do H & V flips whilst resizing or converting
the image, so expose that via V4L2_CID_[H|V]FLIP.
Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
---
.../bcm2835-codec/bcm2835-v4l2-codec.c | 48 +++++++++++++++++++
1 file changed, 48 insertions(+)
--- a/drivers/staging/vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c
+++ b/drivers/staging/vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c
@@ -679,6 +679,9 @@ struct bcm2835_codec_ctx {
enum v4l2_xfer_func xfer_func;
enum v4l2_quantization quant;
+ int hflip;
+ int vflip;
+
/* Source and destination queue data */
struct bcm2835_codec_q_data q_data[2];
s32 bitrate;
@@ -2202,6 +2205,34 @@ static int bcm2835_codec_s_ctrl(struct v
sizeof(mmal_bool));
break;
}
+ case V4L2_CID_HFLIP:
+ case V4L2_CID_VFLIP: {
+ u32 u32_value;
+
+ if (ctrl->id == V4L2_CID_HFLIP)
+ ctx->hflip = ctrl->val;
+ else
+ ctx->vflip = ctrl->val;
+
+ if (!ctx->component)
+ break;
+
+ if (ctx->hflip && ctx->vflip)
+ u32_value = MMAL_PARAM_MIRROR_BOTH;
+ else if (ctx->hflip)
+ u32_value = MMAL_PARAM_MIRROR_HORIZONTAL;
+ else if (ctx->vflip)
+ u32_value = MMAL_PARAM_MIRROR_VERTICAL;
+ else
+ u32_value = MMAL_PARAM_MIRROR_NONE;
+
+ ret = vchiq_mmal_port_parameter_set(ctx->dev->instance,
+ &ctx->component->input[0],
+ MMAL_PARAMETER_MIRROR,
+ &u32_value,
+ sizeof(u32_value));
+ break;
+ }
default:
v4l2_err(&ctx->dev->v4l2_dev, "Invalid control\n");
@@ -3152,6 +3183,23 @@ static int bcm2835_codec_open(struct fil
}
break;
case ISP:
+ {
+ v4l2_ctrl_handler_init(hdl, 2);
+
+ v4l2_ctrl_new_std(hdl, &bcm2835_codec_ctrl_ops,
+ V4L2_CID_HFLIP,
+ 1, 0, 1, 0);
+ v4l2_ctrl_new_std(hdl, &bcm2835_codec_ctrl_ops,
+ V4L2_CID_VFLIP,
+ 1, 0, 1, 0);
+ if (hdl->error) {
+ rc = hdl->error;
+ goto free_ctrl_handler;
+ }
+ ctx->fh.ctrl_handler = hdl;
+ v4l2_ctrl_handler_setup(hdl);
+ }
+ break;
case DEINTERLACE:
{
v4l2_ctrl_handler_init(hdl, 0);
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