layer->fmt, &layer->geo);
}
-static void mxr_graph_fix_geometry(struct mxr_layer *layer)
+static inline unsigned int closest(unsigned int x, unsigned int a,
+ unsigned int b, unsigned long flags)
+{
+ unsigned int mid = (a + b) / 2;
+
+ /* choosing closest value with constraints according to table:
+ * -------------+-----+-----+-----+-------+
+ * flags | 0 | LE | GE | LE|GE |
+ * -------------+-----+-----+-----+-------+
+ * x <= a | a | a | a | a |
+ * a < x <= mid | a | a | b | a |
+ * mid < x < b | b | a | b | b |
+ * b <= x | b | b | b | b |
+ * -------------+-----+-----+-----+-------+
+ */
+
+ /* remove all non-constraint flags */
+ flags &= V4L2_SEL_FLAG_LE | V4L2_SEL_FLAG_GE;
+
+ if (x <= a)
+ return a;
+ if (x >= b)
+ return b;
+ if (flags == V4L2_SEL_FLAG_LE)
+ return a;
+ if (flags == V4L2_SEL_FLAG_GE)
+ return b;
+ if (x <= mid)
+ return a;
+ return b;
+}
+
+static inline unsigned int do_center(unsigned int center,
+ unsigned int size, unsigned int upper, unsigned int flags)
+{
+ unsigned int lower;
+
+ if (flags & MXR_NO_OFFSET)
+ return 0;
+
+ lower = center - min(center, size / 2);
+ return min(lower, upper - size);
+}
+
+static void mxr_graph_fix_geometry(struct mxr_layer *layer,
+ enum mxr_geometry_stage stage, unsigned long flags)
{
struct mxr_geometry *geo = &layer->geo;
+ struct mxr_crop *src = &geo->src;
+ struct mxr_crop *dst = &geo->dst;
+ unsigned int x_center, y_center;
- /* limit to boundary size */
- geo->src.full_width = clamp_val(geo->src.full_width, 1, 32767);
- geo->src.full_height = clamp_val(geo->src.full_height, 1, 2047);
- geo->src.width = clamp_val(geo->src.width, 1, geo->src.full_width);
- geo->src.width = min(geo->src.width, 2047U);
- /* not possible to crop of Y axis */
- geo->src.y_offset = min(geo->src.y_offset, geo->src.full_height - 1);
- geo->src.height = geo->src.full_height - geo->src.y_offset;
- /* limitting offset */
- geo->src.x_offset = min(geo->src.x_offset,
- geo->src.full_width - geo->src.width);
-
- /* setting position in output */
- geo->dst.width = min(geo->dst.width, geo->dst.full_width);
- geo->dst.height = min(geo->dst.height, geo->dst.full_height);
-
- /* Mixer supports only 1x and 2x scaling */
- if (geo->dst.width >= 2 * geo->src.width) {
- geo->x_ratio = 1;
- geo->dst.width = 2 * geo->src.width;
- } else {
- geo->x_ratio = 0;
- geo->dst.width = geo->src.width;
- }
+ switch (stage) {
- if (geo->dst.height >= 2 * geo->src.height) {
- geo->y_ratio = 1;
- geo->dst.height = 2 * geo->src.height;
- } else {
- geo->y_ratio = 0;
- geo->dst.height = geo->src.height;
- }
+ case MXR_GEOMETRY_SINK: /* nothing to be fixed here */
+ flags = 0;
+ /* fall through */
+
+ case MXR_GEOMETRY_COMPOSE:
+ /* remember center of the area */
+ x_center = dst->x_offset + dst->width / 2;
+ y_center = dst->y_offset + dst->height / 2;
+ /* round up/down to 2 multiple depending on flags */
+ if (flags & V4L2_SEL_FLAG_LE) {
+ dst->width = round_down(dst->width, 2);
+ dst->height = round_down(dst->height, 2);
+ } else {
+ dst->width = round_up(dst->width, 2);
+ dst->height = round_up(dst->height, 2);
+ }
+ /* assure that compose rect is inside display area */
+ dst->width = min(dst->width, dst->full_width);
+ dst->height = min(dst->height, dst->full_height);
+
+ /* ensure that compose is reachable using 2x scaling */
+ dst->width = min(dst->width, 2 * src->full_width);
+ dst->height = min(dst->height, 2 * src->full_height);
+
+ /* setup offsets */
+ dst->x_offset = do_center(x_center, dst->width,
+ dst->full_width, flags);
+ dst->y_offset = do_center(y_center, dst->height,
+ dst->full_height, flags);
+ flags = 0;
+ /* fall through */
- geo->dst.x_offset = min(geo->dst.x_offset,
- geo->dst.full_width - geo->dst.width);
- geo->dst.y_offset = min(geo->dst.y_offset,
- geo->dst.full_height - geo->dst.height);
+ case MXR_GEOMETRY_CROP:
+ /* remember center of the area */
+ x_center = src->x_offset + src->width / 2;
+ y_center = src->y_offset + src->height / 2;
+ /* ensure that cropping area lies inside the buffer */
+ if (src->full_width < dst->width)
+ src->width = dst->width / 2;
+ else
+ src->width = closest(src->width, dst->width / 2,
+ dst->width, flags);
+
+ if (src->width == dst->width)
+ geo->x_ratio = 0;
+ else
+ geo->x_ratio = 1;
+
+ if (src->full_height < dst->height)
+ src->height = dst->height / 2;
+ else
+ src->height = closest(src->height, dst->height / 2,
+ dst->height, flags);
+
+ if (src->height == dst->height)
+ geo->y_ratio = 0;
+ else
+ geo->y_ratio = 1;
+
+ /* setup offsets */
+ src->x_offset = do_center(x_center, src->width,
+ src->full_width, flags);
+ src->y_offset = do_center(y_center, src->height,
+ src->full_height, flags);
+ flags = 0;
+ /* fall through */
+ case MXR_GEOMETRY_SOURCE:
+ src->full_width = clamp_val(src->full_width,
+ src->width + src->x_offset, 32767);
+ src->full_height = clamp_val(src->full_height,
+ src->height + src->y_offset, 2047);
+ };
}
/* PUBLIC API */
return 0;
}
-/* Geometry handling */
-static void mxr_layer_geo_fix(struct mxr_layer *layer)
+static void mxr_geometry_dump(struct mxr_device *mdev, struct mxr_geometry *geo)
{
- struct mxr_device *mdev = layer->mdev;
- struct v4l2_mbus_framefmt mbus_fmt;
-
- /* TODO: add some dirty flag to avoid unnecessary adjustments */
- mxr_get_mbus_fmt(mdev, &mbus_fmt);
- layer->geo.dst.full_width = mbus_fmt.width;
- layer->geo.dst.full_height = mbus_fmt.height;
- layer->geo.dst.field = mbus_fmt.field;
- layer->ops.fix_geometry(layer);
+ mxr_dbg(mdev, "src.full_size = (%u, %u)\n",
+ geo->src.full_width, geo->src.full_height);
+ mxr_dbg(mdev, "src.size = (%u, %u)\n",
+ geo->src.width, geo->src.height);
+ mxr_dbg(mdev, "src.offset = (%u, %u)\n",
+ geo->src.x_offset, geo->src.y_offset);
+ mxr_dbg(mdev, "dst.full_size = (%u, %u)\n",
+ geo->dst.full_width, geo->dst.full_height);
+ mxr_dbg(mdev, "dst.size = (%u, %u)\n",
+ geo->dst.width, geo->dst.height);
+ mxr_dbg(mdev, "dst.offset = (%u, %u)\n",
+ geo->dst.x_offset, geo->dst.y_offset);
+ mxr_dbg(mdev, "ratio = (%u, %u)\n",
+ geo->x_ratio, geo->y_ratio);
}
static void mxr_layer_default_geo(struct mxr_layer *layer)
layer->geo.src.width = layer->geo.src.full_width;
layer->geo.src.height = layer->geo.src.full_height;
- layer->ops.fix_geometry(layer);
+ mxr_geometry_dump(mdev, &layer->geo);
+ layer->ops.fix_geometry(layer, MXR_GEOMETRY_SINK, 0);
+ mxr_geometry_dump(mdev, &layer->geo);
}
-static void mxr_geometry_dump(struct mxr_device *mdev, struct mxr_geometry *geo)
+static void mxr_layer_update_output(struct mxr_layer *layer)
{
- mxr_dbg(mdev, "src.full_size = (%u, %u)\n",
- geo->src.full_width, geo->src.full_height);
- mxr_dbg(mdev, "src.size = (%u, %u)\n",
- geo->src.width, geo->src.height);
- mxr_dbg(mdev, "src.offset = (%u, %u)\n",
- geo->src.x_offset, geo->src.y_offset);
- mxr_dbg(mdev, "dst.full_size = (%u, %u)\n",
- geo->dst.full_width, geo->dst.full_height);
- mxr_dbg(mdev, "dst.size = (%u, %u)\n",
- geo->dst.width, geo->dst.height);
- mxr_dbg(mdev, "dst.offset = (%u, %u)\n",
- geo->dst.x_offset, geo->dst.y_offset);
- mxr_dbg(mdev, "ratio = (%u, %u)\n",
- geo->x_ratio, geo->y_ratio);
-}
+ struct mxr_device *mdev = layer->mdev;
+ struct v4l2_mbus_framefmt mbus_fmt;
+
+ mxr_get_mbus_fmt(mdev, &mbus_fmt);
+ /* checking if update is needed */
+ if (layer->geo.dst.full_width == mbus_fmt.width &&
+ layer->geo.dst.full_height == mbus_fmt.width)
+ return;
+ layer->geo.dst.full_width = mbus_fmt.width;
+ layer->geo.dst.full_height = mbus_fmt.height;
+ layer->geo.dst.field = mbus_fmt.field;
+ layer->ops.fix_geometry(layer, MXR_GEOMETRY_SINK, 0);
+
+ mxr_geometry_dump(mdev, &layer->geo);
+}
static const struct mxr_format *find_format_by_fourcc(
struct mxr_layer *layer, unsigned long fourcc);
return 0;
}
-static int mxr_s_fmt(struct file *file, void *priv,
- struct v4l2_format *f)
-{
- struct mxr_layer *layer = video_drvdata(file);
- const struct mxr_format *fmt;
- struct v4l2_pix_format_mplane *pix;
- struct mxr_device *mdev = layer->mdev;
- struct mxr_geometry *geo = &layer->geo;
-
- mxr_dbg(mdev, "%s:%d\n", __func__, __LINE__);
-
- pix = &f->fmt.pix_mp;
- fmt = find_format_by_fourcc(layer, pix->pixelformat);
- if (fmt == NULL) {
- mxr_warn(mdev, "not recognized fourcc: %08x\n",
- pix->pixelformat);
- return -EINVAL;
- }
- layer->fmt = fmt;
- geo->src.full_width = pix->width;
- geo->src.width = pix->width;
- geo->src.full_height = pix->height;
- geo->src.height = pix->height;
- /* assure consistency of geometry */
- mxr_layer_geo_fix(layer);
- mxr_dbg(mdev, "width=%u height=%u span=%u\n",
- geo->src.width, geo->src.height, geo->src.full_width);
-
- return 0;
-}
-
static unsigned int divup(unsigned int divident, unsigned int divisor)
{
return (divident + divisor - 1) / divisor;
{
int i;
+ /* checking if nothing to fill */
+ if (!planes)
+ return;
+
memset(planes, 0, sizeof(*planes) * fmt->num_subframes);
for (i = 0; i < fmt->num_planes; ++i) {
struct v4l2_plane_pix_format *plane = planes
return 0;
}
-static inline struct mxr_crop *choose_crop_by_type(struct mxr_geometry *geo,
- enum v4l2_buf_type type)
-{
- switch (type) {
- case V4L2_BUF_TYPE_VIDEO_OUTPUT:
- case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
- return &geo->dst;
- case V4L2_BUF_TYPE_VIDEO_OVERLAY:
- return &geo->src;
- default:
- return NULL;
- }
-}
-
-static int mxr_g_crop(struct file *file, void *fh, struct v4l2_crop *a)
+static int mxr_s_fmt(struct file *file, void *priv,
+ struct v4l2_format *f)
{
struct mxr_layer *layer = video_drvdata(file);
- struct mxr_crop *crop;
+ const struct mxr_format *fmt;
+ struct v4l2_pix_format_mplane *pix;
+ struct mxr_device *mdev = layer->mdev;
+ struct mxr_geometry *geo = &layer->geo;
- mxr_dbg(layer->mdev, "%s:%d\n", __func__, __LINE__);
- crop = choose_crop_by_type(&layer->geo, a->type);
- if (crop == NULL)
+ mxr_dbg(mdev, "%s:%d\n", __func__, __LINE__);
+
+ pix = &f->fmt.pix_mp;
+ fmt = find_format_by_fourcc(layer, pix->pixelformat);
+ if (fmt == NULL) {
+ mxr_warn(mdev, "not recognized fourcc: %08x\n",
+ pix->pixelformat);
return -EINVAL;
- mxr_layer_geo_fix(layer);
- a->c.left = crop->x_offset;
- a->c.top = crop->y_offset;
- a->c.width = crop->width;
- a->c.height = crop->height;
+ }
+ layer->fmt = fmt;
+ /* set source size to highest accepted value */
+ geo->src.full_width = max(geo->dst.full_width, pix->width);
+ geo->src.full_height = max(geo->dst.full_height, pix->height);
+ layer->ops.fix_geometry(layer, MXR_GEOMETRY_SOURCE, 0);
+ mxr_geometry_dump(mdev, &layer->geo);
+ /* set cropping to total visible screen */
+ geo->src.width = pix->width;
+ geo->src.height = pix->height;
+ geo->src.x_offset = 0;
+ geo->src.y_offset = 0;
+ /* assure consistency of geometry */
+ layer->ops.fix_geometry(layer, MXR_GEOMETRY_CROP, MXR_NO_OFFSET);
+ mxr_geometry_dump(mdev, &layer->geo);
+ /* set full size to lowest possible value */
+ geo->src.full_width = 0;
+ geo->src.full_height = 0;
+ layer->ops.fix_geometry(layer, MXR_GEOMETRY_SOURCE, 0);
+ mxr_geometry_dump(mdev, &layer->geo);
+
+ /* returning results */
+ mxr_g_fmt(file, priv, f);
+
return 0;
}
-static int mxr_s_crop(struct file *file, void *fh, struct v4l2_crop *a)
+static int mxr_g_selection(struct file *file, void *fh,
+ struct v4l2_selection *s)
{
struct mxr_layer *layer = video_drvdata(file);
- struct mxr_crop *crop;
+ struct mxr_geometry *geo = &layer->geo;
mxr_dbg(layer->mdev, "%s:%d\n", __func__, __LINE__);
- crop = choose_crop_by_type(&layer->geo, a->type);
- if (crop == NULL)
+
+ if (s->type != V4L2_BUF_TYPE_VIDEO_OUTPUT &&
+ s->type != V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
+ return -EINVAL;
+
+ switch (s->target) {
+ case V4L2_SEL_TGT_CROP_ACTIVE:
+ s->r.left = geo->src.x_offset;
+ s->r.top = geo->src.y_offset;
+ s->r.width = geo->src.width;
+ s->r.height = geo->src.height;
+ break;
+ case V4L2_SEL_TGT_CROP_DEFAULT:
+ case V4L2_SEL_TGT_CROP_BOUNDS:
+ s->r.left = 0;
+ s->r.top = 0;
+ s->r.width = geo->src.full_width;
+ s->r.height = geo->src.full_height;
+ break;
+ case V4L2_SEL_TGT_COMPOSE_ACTIVE:
+ case V4L2_SEL_TGT_COMPOSE_PADDED:
+ s->r.left = geo->dst.x_offset;
+ s->r.top = geo->dst.y_offset;
+ s->r.width = geo->dst.width;
+ s->r.height = geo->dst.height;
+ break;
+ case V4L2_SEL_TGT_COMPOSE_DEFAULT:
+ case V4L2_SEL_TGT_COMPOSE_BOUNDS:
+ s->r.left = 0;
+ s->r.top = 0;
+ s->r.width = geo->dst.full_width;
+ s->r.height = geo->dst.full_height;
+ break;
+ default:
return -EINVAL;
- crop->x_offset = a->c.left;
- crop->y_offset = a->c.top;
- crop->width = a->c.width;
- crop->height = a->c.height;
- mxr_layer_geo_fix(layer);
+ }
+
return 0;
}
-static int mxr_cropcap(struct file *file, void *fh, struct v4l2_cropcap *a)
+/* returns 1 if rectangle 'a' is inside 'b' */
+static int mxr_is_rect_inside(struct v4l2_rect *a, struct v4l2_rect *b)
+{
+ if (a->left < b->left)
+ return 0;
+ if (a->top < b->top)
+ return 0;
+ if (a->left + a->width > b->left + b->width)
+ return 0;
+ if (a->top + a->height > b->top + b->height)
+ return 0;
+ return 1;
+}
+
+static int mxr_s_selection(struct file *file, void *fh,
+ struct v4l2_selection *s)
{
struct mxr_layer *layer = video_drvdata(file);
- struct mxr_crop *crop;
+ struct mxr_geometry *geo = &layer->geo;
+ struct mxr_crop *target = NULL;
+ enum mxr_geometry_stage stage;
+ struct mxr_geometry tmp;
+ struct v4l2_rect res;
- mxr_dbg(layer->mdev, "%s:%d\n", __func__, __LINE__);
- crop = choose_crop_by_type(&layer->geo, a->type);
- if (crop == NULL)
+ memset(&res, 0, sizeof res);
+
+ mxr_dbg(layer->mdev, "%s: rect: %dx%d@%d,%d\n", __func__,
+ s->r.width, s->r.height, s->r.left, s->r.top);
+
+ if (s->type != V4L2_BUF_TYPE_VIDEO_OUTPUT &&
+ s->type != V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
return -EINVAL;
- mxr_layer_geo_fix(layer);
- a->bounds.left = 0;
- a->bounds.top = 0;
- a->bounds.width = crop->full_width;
- a->bounds.top = crop->full_height;
- a->defrect = a->bounds;
- /* setting pixel aspect to 1/1 */
- a->pixelaspect.numerator = 1;
- a->pixelaspect.denominator = 1;
+
+ switch (s->target) {
+ /* ignore read-only targets */
+ case V4L2_SEL_TGT_CROP_DEFAULT:
+ case V4L2_SEL_TGT_CROP_BOUNDS:
+ res.width = geo->src.full_width;
+ res.height = geo->src.full_height;
+ break;
+
+ /* ignore read-only targets */
+ case V4L2_SEL_TGT_COMPOSE_DEFAULT:
+ case V4L2_SEL_TGT_COMPOSE_BOUNDS:
+ res.width = geo->dst.full_width;
+ res.height = geo->dst.full_height;
+ break;
+
+ case V4L2_SEL_TGT_CROP_ACTIVE:
+ target = &geo->src;
+ stage = MXR_GEOMETRY_CROP;
+ break;
+ case V4L2_SEL_TGT_COMPOSE_ACTIVE:
+ case V4L2_SEL_TGT_COMPOSE_PADDED:
+ target = &geo->dst;
+ stage = MXR_GEOMETRY_COMPOSE;
+ break;
+ default:
+ return -EINVAL;
+ }
+ /* apply change and update geometry if needed */
+ if (target) {
+ /* backup current geometry if setup fails */
+ memcpy(&tmp, geo, sizeof tmp);
+
+ /* apply requested selection */
+ target->x_offset = s->r.left;
+ target->y_offset = s->r.top;
+ target->width = s->r.width;
+ target->height = s->r.height;
+
+ layer->ops.fix_geometry(layer, stage, s->flags);
+
+ /* retrieve update selection rectangle */
+ res.left = target->x_offset;
+ res.top = target->y_offset;
+ res.width = target->width;
+ res.height = target->height;
+
+ mxr_geometry_dump(layer->mdev, &layer->geo);
+ }
+
+ /* checking if the rectangle satisfies constraints */
+ if ((s->flags & V4L2_SEL_FLAG_LE) && !mxr_is_rect_inside(&res, &s->r))
+ goto fail;
+ if ((s->flags & V4L2_SEL_FLAG_GE) && !mxr_is_rect_inside(&s->r, &res))
+ goto fail;
+
+ /* return result rectangle */
+ s->r = res;
+
return 0;
+fail:
+ /* restore old geometry, which is not touched if target is NULL */
+ if (target)
+ memcpy(geo, &tmp, sizeof tmp);
+ return -ERANGE;
}
static int mxr_enum_dv_presets(struct file *file, void *fh,
mutex_unlock(&mdev->mutex);
+ mxr_layer_update_output(layer);
+
/* any failure should return EINVAL according to V4L2 doc */
return ret ? -EINVAL : 0;
}
mutex_unlock(&mdev->mutex);
+ mxr_layer_update_output(layer);
+
return ret ? -EINVAL : 0;
}
struct video_device *vfd = video_devdata(file);
struct mxr_layer *layer = video_drvdata(file);
struct mxr_device *mdev = layer->mdev;
- int ret = 0;
if (i >= mdev->output_cnt || mdev->output[i] == NULL)
return -EINVAL;
mutex_lock(&mdev->mutex);
if (mdev->n_output > 0) {
- ret = -EBUSY;
- goto done;
+ mutex_unlock(&mdev->mutex);
+ return -EBUSY;
}
mdev->current_output = i;
vfd->tvnorms = 0;
v4l2_subdev_call(to_outsd(mdev), video, g_tvnorms_output,
&vfd->tvnorms);
+ mutex_unlock(&mdev->mutex);
+
+ /* update layers geometry */
+ mxr_layer_update_output(layer);
+
mxr_dbg(mdev, "tvnorms = %08llx\n", vfd->tvnorms);
-done:
- mutex_unlock(&mdev->mutex);
- return ret;
+ return 0;
}
static int mxr_g_output(struct file *file, void *fh, unsigned int *p)
.vidioc_enum_output = mxr_enum_output,
.vidioc_s_output = mxr_s_output,
.vidioc_g_output = mxr_g_output,
- /* Crop ioctls */
- .vidioc_g_crop = mxr_g_crop,
- .vidioc_s_crop = mxr_s_crop,
- .vidioc_cropcap = mxr_cropcap,
+ /* selection ioctls */
+ .vidioc_g_selection = mxr_g_selection,
+ .vidioc_s_selection = mxr_s_selection,
};
static int mxr_video_open(struct file *file)
/* block any changes in output configuration */
mxr_output_get(mdev);
- /* update layers geometry */
- mxr_layer_geo_fix(layer);
- mxr_geometry_dump(mdev, &layer->geo);
-
+ mxr_layer_update_output(layer);
layer->ops.format_set(layer);
/* enabling layer in hardware */
spin_lock_irqsave(&layer->enq_slock, flags);
mxr_reg_vp_format(layer->mdev, layer->fmt, &layer->geo);
}
-static void mxr_vp_fix_geometry(struct mxr_layer *layer)
+static inline unsigned int do_center(unsigned int center,
+ unsigned int size, unsigned int upper, unsigned int flags)
{
- struct mxr_geometry *geo = &layer->geo;
+ unsigned int lower;
+
+ if (flags & MXR_NO_OFFSET)
+ return 0;
+
+ lower = center - min(center, size / 2);
+ return min(lower, upper - size);
+}
- /* align horizontal size to 8 pixels */
- geo->src.full_width = ALIGN(geo->src.full_width, 8);
- /* limit to boundary size */
- geo->src.full_width = clamp_val(geo->src.full_width, 8, 8192);
- geo->src.full_height = clamp_val(geo->src.full_height, 1, 8192);
- geo->src.width = clamp_val(geo->src.width, 32, geo->src.full_width);
- geo->src.width = min(geo->src.width, 2047U);
- geo->src.height = clamp_val(geo->src.height, 4, geo->src.full_height);
- geo->src.height = min(geo->src.height, 2047U);
-
- /* setting size of output window */
- geo->dst.width = clamp_val(geo->dst.width, 8, geo->dst.full_width);
- geo->dst.height = clamp_val(geo->dst.height, 1, geo->dst.full_height);
-
- /* ensure that scaling is in range 1/4x to 16x */
- if (geo->src.width >= 4 * geo->dst.width)
- geo->src.width = 4 * geo->dst.width;
- if (geo->dst.width >= 16 * geo->src.width)
- geo->dst.width = 16 * geo->src.width;
- if (geo->src.height >= 4 * geo->dst.height)
- geo->src.height = 4 * geo->dst.height;
- if (geo->dst.height >= 16 * geo->src.height)
- geo->dst.height = 16 * geo->src.height;
-
- /* setting scaling ratio */
- geo->x_ratio = (geo->src.width << 16) / geo->dst.width;
- geo->y_ratio = (geo->src.height << 16) / geo->dst.height;
-
- /* adjust offsets */
- geo->src.x_offset = min(geo->src.x_offset,
- geo->src.full_width - geo->src.width);
- geo->src.y_offset = min(geo->src.y_offset,
- geo->src.full_height - geo->src.height);
- geo->dst.x_offset = min(geo->dst.x_offset,
- geo->dst.full_width - geo->dst.width);
- geo->dst.y_offset = min(geo->dst.y_offset,
- geo->dst.full_height - geo->dst.height);
+static void mxr_vp_fix_geometry(struct mxr_layer *layer,
+ enum mxr_geometry_stage stage, unsigned long flags)
+{
+ struct mxr_geometry *geo = &layer->geo;
+ struct mxr_crop *src = &geo->src;
+ struct mxr_crop *dst = &geo->dst;
+ unsigned long x_center, y_center;
+
+ switch (stage) {
+
+ case MXR_GEOMETRY_SINK: /* nothing to be fixed here */
+ case MXR_GEOMETRY_COMPOSE:
+ /* remember center of the area */
+ x_center = dst->x_offset + dst->width / 2;
+ y_center = dst->y_offset + dst->height / 2;
+
+ /* ensure that compose is reachable using 16x scaling */
+ dst->width = clamp(dst->width, 8U, 16 * src->full_width);
+ dst->height = clamp(dst->height, 1U, 16 * src->full_height);
+
+ /* setup offsets */
+ dst->x_offset = do_center(x_center, dst->width,
+ dst->full_width, flags);
+ dst->y_offset = do_center(y_center, dst->height,
+ dst->full_height, flags);
+ flags = 0; /* remove possible MXR_NO_OFFSET flag */
+ /* fall through */
+ case MXR_GEOMETRY_CROP:
+ /* remember center of the area */
+ x_center = src->x_offset + src->width / 2;
+ y_center = src->y_offset + src->height / 2;
+
+ /* ensure scaling is between 0.25x .. 16x */
+ src->width = clamp(src->width, round_up(dst->width, 4),
+ dst->width * 16);
+ src->height = clamp(src->height, round_up(dst->height, 4),
+ dst->height * 16);
+
+ /* hardware limits */
+ src->width = clamp(src->width, 32U, 2047U);
+ src->height = clamp(src->height, 4U, 2047U);
+
+ /* setup offsets */
+ src->x_offset = do_center(x_center, src->width,
+ src->full_width, flags);
+ src->y_offset = do_center(y_center, src->height,
+ src->full_height, flags);
+
+ /* setting scaling ratio */
+ geo->x_ratio = (src->width << 16) / dst->width;
+ geo->y_ratio = (src->height << 16) / dst->height;
+ /* fall through */
+
+ case MXR_GEOMETRY_SOURCE:
+ src->full_width = clamp(src->full_width,
+ ALIGN(src->width + src->x_offset, 8), 8192U);
+ src->full_height = clamp(src->full_height,
+ src->height + src->y_offset, 8192U);
+ };
}
/* PUBLIC API */
projects / openwrt / staging / blogic.git / commitdiff