diff options
Diffstat (limited to 'drivers/media/video/s5p-tv/mixer_vp_layer.c')
-rw-r--r-- | drivers/media/video/s5p-tv/mixer_vp_layer.c | 108 |
1 files changed, 69 insertions, 39 deletions
diff --git a/drivers/media/video/s5p-tv/mixer_vp_layer.c b/drivers/media/video/s5p-tv/mixer_vp_layer.c index f3bb2e34cb5..3d13a636877 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 / 16, 4), + dst->width * 4); + src->height = clamp(src->height, round_up(dst->height / 16, 4), + dst->height * 4); + + /* 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 */ |