/* 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; }