diff options
Diffstat (limited to 'src/sna/sna_video.h')
| -rw-r--r-- | src/sna/sna_video.h | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/src/sna/sna_video.h b/src/sna/sna_video.h index dfb8c0c4..b2789913 100644 --- a/src/sna/sna_video.h +++ b/src/sna/sna_video.h @@ -213,4 +213,26 @@ sna_window_set_port(WindowPtr window, XvPortPtr port) ((void **)__get_private(window, sna_window_key))[2] = port; } +static inline int offset_and_clip(int x, int dx) +{ + x += dx; + if (x <= 0) + return 0; + if (x >= MAXSHORT) + return MAXSHORT; + return x; +} + +static inline void init_video_region(RegionRec *region, + DrawablePtr draw, + int drw_x, int drw_y, + int drw_w, int drw_h) +{ + region->extents.x1 = offset_and_clip(draw->x, drw_x); + region->extents.y1 = offset_and_clip(draw->y, drw_y); + region->extents.x2 = offset_and_clip(draw->x, drw_x + drw_w); + region->extents.y2 = offset_and_clip(draw->y, drw_y + drw_h); + region->data = NULL; +} + #endif /* SNA_VIDEO_H */ |