PXP allows clockwise rotation of 0°, 90°, 180° and 270°.
Add support for it.
Tested on a imx6ull-evk.
For example, to rotate 90° the following Gstreamer pipeline can
be used:
gst-launch-1.0 videotestsrc ! video/x-raw,width=640,height=480 ! \
v4l2convert extra-controls=cid,rotate=90 ! \
video/x-raw,width=120,height=160 ! fbdevsink
Signed-off-by: Fabio Estevam <festevam@xxxxxxx>
---
Changes since v3:
- Use existing definitions for the rotation modes (Philipp)
- Combine the 0 and default cases (Philipp)
drivers/media/platform/imx-pxp.c | 31 +++++++++++++++++++++++++++++--
1 file changed, 29 insertions(+), 2 deletions(-)
diff --git a/drivers/media/platform/imx-pxp.c b/drivers/media/platform/imx-pxp.c
index b7174778db53..689ae5e6ac62 100644
--- a/drivers/media/platform/imx-pxp.c
+++ b/drivers/media/platform/imx-pxp.c
@@ -211,6 +211,7 @@ struct pxp_ctx {
/* Processing mode */
int mode;
u8 alpha_component;
+ u8 rotation;
enum v4l2_colorspace colorspace;
enum v4l2_xfer_func xfer_func;
@@ -767,14 +768,20 @@ static int pxp_start(struct pxp_ctx *ctx, struct vb2_v4l2_buffer *in_vb,
V4L2_BUF_FLAG_BFRAME |
V4L2_BUF_FLAG_TSTAMP_SRC_MASK);
- /* Rotation disabled, 8x8 block size */
+ /* 8x8 block size */
ctrl = BF_PXP_CTRL_VFLIP0(!!(ctx->mode & MEM2MEM_VFLIP)) |
- BF_PXP_CTRL_HFLIP0(!!(ctx->mode & MEM2MEM_HFLIP));
+ BF_PXP_CTRL_HFLIP0(!!(ctx->mode & MEM2MEM_HFLIP)) |
+ BF_PXP_CTRL_ROTATE0(ctx->rotation);
/* Always write alpha value as V4L2_CID_ALPHA_COMPONENT */
out_ctrl = BF_PXP_OUT_CTRL_ALPHA(ctx->alpha_component) |
BF_PXP_OUT_CTRL_ALPHA_OUTPUT(1) |
pxp_v4l2_pix_fmt_to_out_format(dst_fourcc);
out_buf = p_out;
+
+ if (ctx->rotation == BV_PXP_CTRL_ROTATE0__ROT_90 ||
+ ctx->rotation == BV_PXP_CTRL_ROTATE0__ROT_270)
+ swap(dst_width, dst_height);
+
switch (dst_fourcc) {
case V4L2_PIX_FMT_NV12:
case V4L2_PIX_FMT_NV21:
@@ -1297,6 +1304,21 @@ static int pxp_s_fmt_vid_out(struct file *file, void *priv,
return 0;
}
+static u8 pxp_degrees_to_rot_mode(u32 degrees)
+{
+ switch (degrees) {
+ case 90:
+ return BV_PXP_CTRL_ROTATE0__ROT_90;
+ case 180:
+ return BV_PXP_CTRL_ROTATE0__ROT_180;
+ case 270:
+ return BV_PXP_CTRL_ROTATE0__ROT_270;
+ case 0:
+ default:
+ return BV_PXP_CTRL_ROTATE0__ROT_0;
+ }
+}
+
static int pxp_s_ctrl(struct v4l2_ctrl *ctrl)
{
struct pxp_ctx *ctx =
@@ -1317,6 +1339,10 @@ static int pxp_s_ctrl(struct v4l2_ctrl *ctrl)
ctx->mode &= ~MEM2MEM_VFLIP;
break;
+ case V4L2_CID_ROTATE:
+ ctx->rotation = pxp_degrees_to_rot_mode(ctrl->val);
+ break;
+
case V4L2_CID_ALPHA_COMPONENT:
ctx->alpha_component = ctrl->val;
break;
@@ -1524,6 +1550,7 @@ static int pxp_open(struct file *file)
v4l2_ctrl_handler_init(hdl, 4);
v4l2_ctrl_new_std(hdl, &pxp_ctrl_ops, V4L2_CID_HFLIP, 0, 1, 1, 0);
v4l2_ctrl_new_std(hdl, &pxp_ctrl_ops, V4L2_CID_VFLIP, 0, 1, 1, 0);
+ v4l2_ctrl_new_std(hdl, &pxp_ctrl_ops, V4L2_CID_ROTATE, 0, 270, 90, 0);
v4l2_ctrl_new_std(hdl, &pxp_ctrl_ops, V4L2_CID_ALPHA_COMPONENT,
0, 255, 1, 255);
if (hdl->error) {
--
2.25.1
