From 499e9f7b9caa1e47194f8043d607f71eef2248bb Mon Sep 17 00:00:00 2001
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From: Jeffy Chen <jeffy.chen@rock-chips.com>
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Date: Fri, 5 Aug 2022 11:39:00 +0800
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Subject: [PATCH 36/36] waylandsink: Support transparent video
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Tested with transparent png picture.
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Signed-off-by: Jeffy Chen <jeffy.chen@rock-chips.com>
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---
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ext/wayland/wlwindow.c | 32 ++++++++++++++++++++++----------
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ext/wayland/wlwindow.h | 3 +++
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2 files changed, 25 insertions(+), 10 deletions(-)
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diff --git a/ext/wayland/wlwindow.c b/ext/wayland/wlwindow.c
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index ba1046a..330579f 100644
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--- a/ext/wayland/wlwindow.c
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+++ b/ext/wayland/wlwindow.c
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@@ -528,17 +528,19 @@ gst_wl_window_resize_video_surface (GstWlWindow * window, gboolean commit)
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}
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static void
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-gst_wl_window_set_opaque (GstWlWindow * window, const GstVideoInfo * info)
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+gst_wl_window_set_opaque (GstWlWindow * window)
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{
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struct wl_region *region;
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- /* Set area opaque */
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- region = wl_compositor_create_region (window->display->compositor);
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- wl_region_add (region, 0, 0, G_MAXINT32, G_MAXINT32);
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- wl_surface_set_opaque_region (window->area_surface, region);
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- wl_region_destroy (region);
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+ if (window->area_opaque) {
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+ /* Set area opaque */
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+ region = wl_compositor_create_region (window->display->compositor);
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+ wl_region_add (region, 0, 0, G_MAXINT32, G_MAXINT32);
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+ wl_surface_set_opaque_region (window->area_surface, region);
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+ wl_region_destroy (region);
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+ }
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- if (!GST_VIDEO_INFO_HAS_ALPHA (info)) {
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+ if (window->video_opaque) {
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/* Set video opaque */
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region = wl_compositor_create_region (window->display->compositor);
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wl_region_add (region, 0, 0, G_MAXINT32, G_MAXINT32);
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@@ -554,10 +556,15 @@ gst_wl_window_render (GstWlWindow * window, GstWlBuffer * buffer,
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if (G_UNLIKELY (info)) {
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window->video_width = info->width;
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window->video_height = info->height;
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+ window->video_opaque = !GST_VIDEO_INFO_HAS_ALPHA (info);
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+ window->area_opaque = window->video_opaque;
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+
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+ if (g_getenv ("WAYLANDSINK_FORCE_OPAQUE"))
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+ window->area_opaque = window->video_opaque = TRUE;
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wl_subsurface_set_sync (window->video_subsurface);
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gst_wl_window_resize_video_surface (window, FALSE);
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- gst_wl_window_set_opaque (window, info);
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+ gst_wl_window_set_opaque (window);
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} else if (window->crop_dirty) {
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gst_wl_window_resize_video_surface (window, FALSE);
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}
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@@ -624,8 +631,13 @@ gst_wl_window_update_borders (GstWlWindow * window)
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height = window->render_rectangle.h;
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}
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- /* we want WL_SHM_FORMAT_XRGB8888 */
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- format = GST_VIDEO_FORMAT_BGRx;
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+ if (window->area_opaque) {
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+ /* we want WL_SHM_FORMAT_XRGB8888 */
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+ format = GST_VIDEO_FORMAT_BGRx;
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+ } else {
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+ /* we want WL_SHM_FORMAT_ARGB8888 */
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+ format = GST_VIDEO_FORMAT_BGRA;
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+ }
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/* draw the area_subsurface */
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gst_video_info_set_format (&info, format, width, height);
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diff --git a/ext/wayland/wlwindow.h b/ext/wayland/wlwindow.h
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index 672e15a..66b69f4 100644
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--- a/ext/wayland/wlwindow.h
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+++ b/ext/wayland/wlwindow.h
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@@ -77,6 +77,9 @@ struct _GstWlWindow
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gint crop_x, crop_y, crop_w, crop_h;
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gboolean crop_dirty;
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+ gboolean video_opaque;
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+ gboolean area_opaque;
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+
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/* when this is not set both the area_surface and the video_surface are not
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* visible and certain steps should be skipped */
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gboolean is_area_surface_mapped;
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--
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2.20.1
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