/* Update the buffer used to draw black borders. When we have viewporter
* support, this is a scaled up 1x1 image, and without we need an black image
* the size of the rendering areay. */
static void
gst_wl_window_update_borders (GstWlWindow * window)
{
GstVideoFormat format;
GstVideoInfo info;
gint width, height;
GstBuffer *buf;
struct wl_buffer *wlbuf;
GstWlBuffer *gwlbuf;
GstAllocator *alloc;
if (window->no_border_update)
return;
if (window->display->viewporter) {
width = height = 1;
window->no_border_update = TRUE;
} else {
width = window->render_rectangle.w;
height = window->render_rectangle.h;
}
/* we want WL_SHM_FORMAT_XRGB8888 */
#if G_BYTE_ORDER == G_BIG_ENDIAN
format = GST_VIDEO_FORMAT_xRGB;
#else
format = GST_VIDEO_FORMAT_BGRx;
#endif
/* draw the area_subsurface */
gst_video_info_set_format (&info, format, width, height);
alloc = gst_wl_shm_allocator_get ();
buf = gst_buffer_new_allocate (alloc, info.size, NULL);
gst_buffer_memset (buf, 0, 0, info.size);
wlbuf =
gst_wl_shm_memory_construct_wl_buffer (gst_buffer_peek_memory (buf, 0),
window->display, &info);
gwlbuf = gst_buffer_add_wl_buffer (buf, wlbuf, window->display);
gst_wl_buffer_attach (gwlbuf, window->area_surface_wrapper);
/* at this point, the GstWlBuffer keeps the buffer
* alive and will free it on wl_buffer::release */
gst_buffer_unref (buf);
g_object_unref (alloc);
}
static gboolean
gst_wayland_sink_propose_allocation (GstBaseSink * bsink, GstQuery * query)
{
GstWaylandSink *sink = GST_WAYLAND_SINK (bsink);
GstStructure *config;
guint size, min_bufs, max_bufs;
config = gst_buffer_pool_get_config (sink->pool);
gst_buffer_pool_config_get_params (config, NULL, &size, &min_bufs, &max_bufs);
/* we do have a pool for sure (created in set_caps),
* so let's propose it anyway, but also propose the allocator on its own */
gst_query_add_allocation_pool (query, sink->pool, size, min_bufs, max_bufs);
gst_query_add_allocation_param (query, gst_wl_shm_allocator_get (), NULL);
gst_structure_free (config);
return TRUE;
}
static gboolean
gst_wayland_sink_set_caps (GstBaseSink * bsink, GstCaps * caps)
{
GstWaylandSink *sink;
GstBufferPool *newpool;
GstVideoInfo info;
enum wl_shm_format format;
GArray *formats;
gint i;
GstStructure *structure;
sink = GST_WAYLAND_SINK (bsink);
GST_DEBUG_OBJECT (sink, "set caps %" GST_PTR_FORMAT, caps);
/* extract info from caps */
if (!gst_video_info_from_caps (&info, caps))
goto invalid_format;
format = gst_video_format_to_wl_shm_format (GST_VIDEO_INFO_FORMAT (&info));
if ((gint) format == -1)
goto invalid_format;
/* verify we support the requested format */
formats = sink->display->shm_formats;
for (i = 0; i < formats->len; i++) {
if (g_array_index (formats, uint32_t, i) == format)
break;
}
if (i >= formats->len)
goto unsupported_format;
/* create a new pool for the new configuration */
newpool = gst_video_buffer_pool_new ();
if (!newpool)
goto pool_failed;
structure = gst_buffer_pool_get_config (newpool);
gst_buffer_pool_config_set_params (structure, caps, info.size, 2, 0);
gst_buffer_pool_config_set_allocator (structure, gst_wl_shm_allocator_get (),
NULL);
if (!gst_buffer_pool_set_config (newpool, structure))
goto config_failed;
/* store the video info */
sink->video_info = info;
sink->video_info_changed = TRUE;
gst_object_replace ((GstObject **) & sink->pool, (GstObject *) newpool);
gst_object_unref (newpool);
return TRUE;
invalid_format:
{
GST_DEBUG_OBJECT (sink,
"Could not locate image format from caps %" GST_PTR_FORMAT, caps);
return FALSE;
}
unsupported_format:
{
GST_DEBUG_OBJECT (sink, "Format %s is not available on the display",
gst_wl_shm_format_to_string (format));
return FALSE;
}
pool_failed:
{
GST_DEBUG_OBJECT (sink, "Failed to create new pool");
return FALSE;
}
config_failed:
{
GST_DEBUG_OBJECT (bsink, "failed setting config");
gst_object_unref (newpool);
return FALSE;
}
}
static GstWlWindow *
gst_wl_window_new_internal (GstWlDisplay * display)
{
GstWlWindow *window;
GstVideoInfo info;
GstBuffer *buf;
GstMapInfo mapinfo;
struct wl_buffer *wlbuf;
GstWlBuffer *gwlbuf;
struct wl_region *region;
window = g_object_new (GST_TYPE_WL_WINDOW, NULL);
window->display = g_object_ref (display);
window->area_surface = wl_compositor_create_surface (display->compositor);
window->video_surface = wl_compositor_create_surface (display->compositor);
wl_proxy_set_queue ((struct wl_proxy *) window->area_surface, display->queue);
wl_proxy_set_queue ((struct wl_proxy *) window->video_surface,
display->queue);
/* embed video_surface in area_surface */
window->video_subsurface =
wl_subcompositor_get_subsurface (display->subcompositor,
window->video_surface, window->area_surface);
wl_subsurface_set_desync (window->video_subsurface);
window->area_viewport = wl_scaler_get_viewport (display->scaler,
window->area_surface);
window->video_viewport = wl_scaler_get_viewport (display->scaler,
window->video_surface);
/* draw the area_subsurface */
gst_video_info_set_format (&info,
/* we want WL_SHM_FORMAT_XRGB8888 */
#if G_BYTE_ORDER == G_BIG_ENDIAN
GST_VIDEO_FORMAT_xRGB,
#else
GST_VIDEO_FORMAT_BGRx,
#endif
1, 1);
buf = gst_buffer_new_allocate (gst_wl_shm_allocator_get (), info.size, NULL);
gst_buffer_map (buf, &mapinfo, GST_MAP_WRITE);
*((guint32 *) mapinfo.data) = 0; /* paint it black */
gst_buffer_unmap (buf, &mapinfo);
wlbuf =
gst_wl_shm_memory_construct_wl_buffer (gst_buffer_peek_memory (buf, 0),
display, &info);
gwlbuf = gst_buffer_add_wl_buffer (buf, wlbuf, display);
gst_wl_buffer_attach (gwlbuf, window->area_surface);
/* at this point, the GstWlBuffer keeps the buffer
* alive and will free it on wl_buffer::release */
gst_buffer_unref (buf);
/* do not accept input */
region = wl_compositor_create_region (display->compositor);
wl_surface_set_input_region (window->area_surface, region);
wl_region_destroy (region);
region = wl_compositor_create_region (display->compositor);
wl_surface_set_input_region (window->video_surface, region);
wl_region_destroy (region);
return window;
}
