diff options
Diffstat (limited to 'src/wayland-util.c')
-rw-r--r-- | src/wayland-util.c | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/src/wayland-util.c b/src/wayland-util.c index 7bf8924..03fed82 100644 --- a/src/wayland-util.c +++ b/src/wayland-util.c @@ -270,3 +270,70 @@ wl_map_for_each(struct wl_map *map, wl_iterator_func_t func, void *data) for_each_helper(&map->client_entries, func, data); for_each_helper(&map->server_entries, func, data); } + +static inline uint32_t +wl_buffer_layout_get_min_size(const struct wl_buffer_layout *layout) +{ + return 4 * 4; +} + +static inline uint32_t +wl_buffer_layout_get_size(const struct wl_buffer_layout *layout) +{ + return (wl_buffer_layout_get_min_size(layout) + + layout->num_planes * 2 * 4); +} + +WL_EXPORT void +wl_array_pack_buffer_layout(struct wl_array *array, + const struct wl_buffer_layout *layout) +{ + uint32_t *p, i; + + wl_array_init(array); + + p = wl_array_add(array, wl_buffer_layout_get_size(layout)); + p[0] = layout->format; + p[1] = layout->width; + p[2] = layout->height; + p[3] = layout->num_planes; + p += 4; + + for (i = 0; i < layout->num_planes; i++, p += 2) { + p[0] = layout->pitches[i]; + p[1] = layout->offsets[i]; + } +} + +WL_EXPORT int +wl_array_unpack_buffer_layout(struct wl_array *array, + struct wl_buffer_layout *layout) +{ + uint32_t *p, i; + + if (!layout) + return 0; + + if (!array || array->size < wl_buffer_layout_get_min_size(layout)) + return 0; + + p = array->data; + layout->format = p[0]; + layout->width = p[1]; + layout->height = p[2]; + layout->num_planes = p[3]; + p += 4; + + if (array->size < wl_buffer_layout_get_size(layout)) + return 0; + + for (i = 0; i < layout->num_planes; i++, p += 2) { + layout->pitches[i] = p[0]; + layout->offsets[i] = p[1]; + } + for (; i < WL_BUFFER_MAX_PLANES; i++) { + layout->pitches[i] = 0; + layout->offsets[i] = 0; + } + return 1; +} |