diff options
Diffstat (limited to 'drivers/media/video/omap3isp/ispresizer.c')
| -rw-r--r-- | drivers/media/video/omap3isp/ispresizer.c | 139 |
1 files changed, 89 insertions, 50 deletions
diff --git a/drivers/media/video/omap3isp/ispresizer.c b/drivers/media/video/omap3isp/ispresizer.c index 6958a9e3dc22..14041c9c8643 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 */ @@ -1603,6 +1641,7 @@ static int resizer_link_setup(struct media_entity *entity, /* media operations */ static const struct media_entity_operations resizer_media_ops = { .link_setup = resizer_link_setup, + .link_validate = v4l2_subdev_link_validate, }; void omap3isp_resizer_unregister_entities(struct isp_res_device *res) |