Support for the legacy crop API is emulated in the subdev core.
Signed-off-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>
---
drivers/media/video/omap3isp/ispresizer.c | 138 ++++++++++++++++++-----------
1 files changed, 88 insertions(+), 50 deletions(-)
diff --git a/drivers/media/video/omap3isp/ispresizer.c b/drivers/media/video/omap3isp/ispresizer.c
index 6958a9e..d7341ab 100644
--- a/drivers/media/video/omap3isp/ispresizer.c
+++ b/drivers/media/video/omap3isp/ispresizer.c
@@ -1188,32 +1188,6 @@ static int resizer_set_stream(struct v4l2_subdev *sd, int enable)
}
/*
- * resizer_g_crop - handle get crop subdev operation
- * @sd : pointer to v4l2 subdev structure
- * @pad : subdev pad
- * @crop : pointer to crop structure
- * @which : active or try format
- * return zero
- */
-static int resizer_g_crop(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh,
- struct v4l2_subdev_crop *crop)
-{
- struct isp_res_device *res = v4l2_get_subdevdata(sd);
- struct v4l2_mbus_framefmt *format;
- struct resizer_ratio ratio;
-
- /* Only sink pad has crop capability */
- if (crop->pad != RESZ_PAD_SINK)
- return -EINVAL;
-
- format = __resizer_get_format(res, fh, RESZ_PAD_SOURCE, crop->which);
- crop->rect = *__resizer_get_crop(res, fh, crop->which);
- resizer_calc_ratios(res, &crop->rect, format, &ratio);
-
- return 0;
-}
-
-/*
* resizer_try_crop - mangles crop parameters.
*/
static void resizer_try_crop(const struct v4l2_mbus_framefmt *sink,
@@ -1223,7 +1197,7 @@ static void resizer_try_crop(const struct v4l2_mbus_framefmt *sink,
const unsigned int spv = DEFAULT_PHASE;
const unsigned int sph = DEFAULT_PHASE;
- /* Crop rectangle is constrained to the output size so that zoom ratio
+ /* Crop rectangle is constrained by the output size so that zoom ratio
* cannot exceed +/-4.0.
*/
unsigned int min_width =
@@ -1248,51 +1222,115 @@ static void resizer_try_crop(const struct v4l2_mbus_framefmt *sink,
}
/*
- * resizer_s_crop - handle set crop subdev operation
- * @sd : pointer to v4l2 subdev structure
- * @pad : subdev pad
- * @crop : pointer to crop structure
- * @which : active or try format
- * return -EINVAL or zero when succeed
+ * resizer_get_selection - Retrieve a selection rectangle on a pad
+ * @sd: ISP resizer V4L2 subdevice
+ * @fh: V4L2 subdev file handle
+ * @sel: Selection rectangle
+ *
+ * The only supported rectangles are the crop rectangles on the sink pad.
+ *
+ * Return 0 on success or a negative error code otherwise.
*/
-static int resizer_s_crop(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh,
- struct v4l2_subdev_crop *crop)
+static int resizer_get_selection(struct v4l2_subdev *sd,
+ struct v4l2_subdev_fh *fh,
+ struct v4l2_subdev_selection *sel)
+{
+ struct isp_res_device *res = v4l2_get_subdevdata(sd);
+ struct v4l2_mbus_framefmt *format_source;
+ struct v4l2_mbus_framefmt *format_sink;
+ struct resizer_ratio ratio;
+
+ if (sel->pad != RESZ_PAD_SINK)
+ return -EINVAL;
+
+ format_sink = __resizer_get_format(res, fh, RESZ_PAD_SINK,
+ sel->which);
+ format_source = __resizer_get_format(res, fh, RESZ_PAD_SOURCE,
+ sel->which);
+
+ switch (sel->target) {
+ case V4L2_SUBDEV_SEL_TGT_CROP_BOUNDS:
+ sel->r.left = 0;
+ sel->r.top = 0;
+ sel->r.width = INT_MAX;
+ sel->r.height = INT_MAX;
+
+ resizer_try_crop(format_sink, format_source, &sel->r);
+ resizer_calc_ratios(res, &sel->r, format_source, &ratio);
+ break;
+
+ case V4L2_SUBDEV_SEL_TGT_CROP_ACTUAL:
+ sel->r = *__resizer_get_crop(res, fh, sel->which);
+ resizer_calc_ratios(res, &sel->r, format_source, &ratio);
+ break;
+
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+/*
+ * resizer_set_selection - Set a selection rectangle on a pad
+ * @sd: ISP resizer V4L2 subdevice
+ * @fh: V4L2 subdev file handle
+ * @sel: Selection rectangle
+ *
+ * The only supported rectangle is the actual crop rectangle on the sink pad.
+ *
+ * FIXME: This function currently behaves as if the KEEP_CONFIG selection flag
+ * was always set.
+ *
+ * Return 0 on success or a negative error code otherwise.
+ */
+static int resizer_set_selection(struct v4l2_subdev *sd,
+ struct v4l2_subdev_fh *fh,
+ struct v4l2_subdev_selection *sel)
{
struct isp_res_device *res = v4l2_get_subdevdata(sd);
struct isp_device *isp = to_isp_device(res);
struct v4l2_mbus_framefmt *format_sink, *format_source;
struct resizer_ratio ratio;
- /* Only sink pad has crop capability */
- if (crop->pad != RESZ_PAD_SINK)
+ if (sel->target != V4L2_SUBDEV_SEL_TGT_CROP_ACTUAL ||
+ sel->pad != RESZ_PAD_SINK)
return -EINVAL;
format_sink = __resizer_get_format(res, fh, RESZ_PAD_SINK,
- crop->which);
+ sel->which);
format_source = __resizer_get_format(res, fh, RESZ_PAD_SOURCE,
- crop->which);
+ sel->which);
dev_dbg(isp->dev, "%s: L=%d,T=%d,W=%d,H=%d,which=%d\n", __func__,
- crop->rect.left, crop->rect.top, crop->rect.width,
- crop->rect.height, crop->which);
+ sel->r.left, sel->r.top, sel->r.width, sel->r.height,
+ sel->which);
dev_dbg(isp->dev, "%s: input=%dx%d, output=%dx%d\n", __func__,
format_sink->width, format_sink->height,
format_source->width, format_source->height);
- resizer_try_crop(format_sink, format_source, &crop->rect);
- *__resizer_get_crop(res, fh, crop->which) = crop->rect;
- resizer_calc_ratios(res, &crop->rect, format_source, &ratio);
+ /* Clamp the crop rectangle to the bounds, and then mangle it further to
+ * fulfill the TRM equations. Store the clamped but otherwise unmangled
+ * rectangle to avoid cropping the input multiple times: when an
+ * application sets the output format, the current crop rectangle is
+ * mangled during crop rectangle computation, which would lead to a new,
+ * smaller input crop rectangle every time the output size is set if we
+ * stored the mangled rectangle.
+ */
+ resizer_try_crop(format_sink, format_source, &sel->r);
+ *__resizer_get_crop(res, fh, sel->which) = sel->r;
+ resizer_calc_ratios(res, &sel->r, format_source, &ratio);
- if (crop->which == V4L2_SUBDEV_FORMAT_TRY)
+ if (sel->which == V4L2_SUBDEV_FORMAT_TRY)
return 0;
res->ratio = ratio;
- res->crop.active = crop->rect;
+ res->crop.active = sel->r;
/*
- * s_crop can be called while streaming is on. In this case
- * the crop values will be set in the next IRQ.
+ * set_selection can be called while streaming is on. In this case the
+ * crop values will be set in the next IRQ.
*/
if (res->state != ISP_PIPELINE_STREAM_STOPPED)
res->applycrop = 1;
@@ -1530,8 +1568,8 @@ static const struct v4l2_subdev_pad_ops resizer_v4l2_pad_ops = {
.enum_frame_size = resizer_enum_frame_size,
.get_fmt = resizer_get_format,
.set_fmt = resizer_set_format,
- .get_crop = resizer_g_crop,
- .set_crop = resizer_s_crop,
+ .get_selection = resizer_get_selection,
+ .set_selection = resizer_set_selection,
};
/* subdev operations */
--
1.7.3.4
--
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