diff options
| -rw-r--r-- | drivers/media/video/s5p-tv/mixer.h | 14 | ||||
| -rw-r--r-- | drivers/media/video/s5p-tv/mixer_grp_layer.c | 157 | ||||
| -rw-r--r-- | drivers/media/video/s5p-tv/mixer_video.c | 342 | ||||
| -rw-r--r-- | drivers/media/video/s5p-tv/mixer_vp_layer.c | 108 |
4 files changed, 425 insertions, 196 deletions
diff --git a/drivers/media/video/s5p-tv/mixer.h b/drivers/media/video/s5p-tv/mixer.h index 51ad59b30358..1597078c4a50 100644 --- a/drivers/media/video/s5p-tv/mixer.h +++ b/drivers/media/video/s5p-tv/mixer.h @@ -86,6 +86,17 @@ struct mxr_crop { unsigned int field; }; +/** stages of geometry operations */ +enum mxr_geometry_stage { + MXR_GEOMETRY_SINK, + MXR_GEOMETRY_COMPOSE, + MXR_GEOMETRY_CROP, + MXR_GEOMETRY_SOURCE, +}; + +/* flag indicating that offset should be 0 */ +#define MXR_NO_OFFSET 0x80000000 + /** description of transformation from source to destination image */ struct mxr_geometry { /** cropping for source image */ @@ -133,7 +144,8 @@ struct mxr_layer_ops { /** streaming stop/start */ void (*stream_set)(struct mxr_layer *, int); /** adjusting geometry */ - void (*fix_geometry)(struct mxr_layer *); + void (*fix_geometry)(struct mxr_layer *, + enum mxr_geometry_stage, unsigned long); }; /** layer instance, a single window and content displayed on output */ diff --git a/drivers/media/video/s5p-tv/mixer_grp_layer.c b/drivers/media/video/s5p-tv/mixer_grp_layer.c index de8270c2b6e7..b93a21f5aa13 100644 --- a/drivers/media/video/s5p-tv/mixer_grp_layer.c +++ b/drivers/media/video/s5p-tv/mixer_grp_layer.c @@ -101,47 +101,132 @@ static void mxr_graph_format_set(struct mxr_layer *layer) 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 */ diff --git a/drivers/media/video/s5p-tv/mixer_video.c b/drivers/media/video/s5p-tv/mixer_video.c index b47d0c06ecf5..7884baeff76a 100644 --- a/drivers/media/video/s5p-tv/mixer_video.c +++ b/drivers/media/video/s5p-tv/mixer_video.c @@ -170,18 +170,22 @@ static int mxr_querycap(struct file *file, void *priv, 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) @@ -204,27 +208,29 @@ 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); @@ -249,37 +255,6 @@ static int mxr_enum_fmt(struct file *file, void *priv, 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; @@ -299,6 +274,10 @@ static void mxr_mplane_fill(struct v4l2_plane_pix_format *planes, { 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 @@ -332,73 +311,194 @@ static int mxr_g_fmt(struct file *file, void *priv, 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, @@ -438,6 +538,8 @@ static int mxr_s_dv_preset(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; } @@ -478,6 +580,8 @@ static int mxr_s_std(struct file *file, void *fh, v4l2_std_id *norm) mutex_unlock(&mdev->mutex); + mxr_layer_update_output(layer); + return ret ? -EINVAL : 0; } @@ -526,25 +630,27 @@ static int mxr_s_output(struct file *file, void *fh, unsigned int i) 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) @@ -633,10 +739,9 @@ static const struct v4l2_ioctl_ops mxr_ioctl_ops = { .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) @@ -805,10 +910,7 @@ static int start_streaming(struct vb2_queue *vq, unsigned int count) /* 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); diff --git a/drivers/media/video/s5p-tv/mixer_vp_layer.c b/drivers/media/video/s5p-tv/mixer_vp_layer.c index f3bb2e34cb51..e41ec2ec45f8 100644 --- a/drivers/media/video/s5p-tv/mixer_vp_layer.c +++ b/drivers/media/video/s5p-tv/mixer_vp_layer.c @@ -127,47 +127,77 @@ static void mxr_vp_format_set(struct mxr_layer *layer) 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 */ |