From: Qiang Yu <yuq...@gmail.com>
To handle multi plane.
v3:
* rename interface
* add x/y/backing_width/backing_height arg
v2:
* use new dmabuf API and check length
Reviewed-by: Marc-André Lureau <marcandre.lur...@redhat.com>
Signed-off-by: Qiang Yu <yuq...@gmail.com>
Message-ID: <20250327025848.46962-6-yuq...@gmail.com>
[ Fix style ]
Signed-off-by: Marc-André Lureau <marcandre.lur...@redhat.com>
---
ui/dbus-listener.c | 114 ++++++++++++++++++++++++++++++++++++++++---
ui/dbus-display1.xml | 45 +++++++++++++++++
2 files changed, 152 insertions(+), 7 deletions(-)
diff --git a/ui/dbus-listener.c b/ui/dbus-listener.c
index 90147972cd..42875b8eed 100644
--- a/ui/dbus-listener.c
+++ b/ui/dbus-listener.c
@@ -85,6 +85,7 @@ struct _DBusDisplayListener {
#endif
#else /* !WIN32 */
QemuDBusDisplay1ListenerUnixMap *map_proxy;
+ QemuDBusDisplay1ListenerUnixScanoutDMABUF2 *scanout_dmabuf_v2_proxy;
#endif
guint dbus_filter;
@@ -288,10 +289,9 @@ static void dbus_call_update_gl(DisplayChangeListener *dcl,
}
#ifdef CONFIG_GBM
-static void dbus_scanout_dmabuf(DisplayChangeListener *dcl,
- QemuDmaBuf *dmabuf)
+static void dbus_scanout_dmabuf_v1(DBusDisplayListener *ddl,
+ QemuDmaBuf *dmabuf)
{
- DBusDisplayListener *ddl = container_of(dcl, DBusDisplayListener, dcl);
g_autoptr(GError) err = NULL;
g_autoptr(GUnixFDList) fd_list = NULL;
int fd;
@@ -322,6 +322,87 @@ static void dbus_scanout_dmabuf(DisplayChangeListener *dcl,
y0_top, G_DBUS_CALL_FLAGS_NONE,
-1, fd_list, NULL, NULL, NULL);
}
+
+static void dbus_scanout_dmabuf_v2(DBusDisplayListener *ddl,
+ QemuDmaBuf *dmabuf)
+{
+ g_autoptr(GError) err = NULL;
+ g_autoptr(GUnixFDList) fd_list = NULL;
+ int i, fd_index[DMABUF_MAX_PLANES], num_fds;
+ uint32_t x, y, width, height, fourcc, backing_width, backing_height;
+ GVariant *fd, *offset, *stride, *fd_handles[DMABUF_MAX_PLANES];
+ uint64_t modifier;
+ bool y0_top;
+ int nfds, noffsets, nstrides;
+ const int *fds = qemu_dmabuf_get_fds(dmabuf, &nfds);
+ const uint32_t *offsets = qemu_dmabuf_get_offsets(dmabuf, &noffsets);
+ const uint32_t *strides = qemu_dmabuf_get_strides(dmabuf, &nstrides);
+ uint32_t num_planes = qemu_dmabuf_get_num_planes(dmabuf);
+
+ assert(nfds >= num_planes);
+ assert(noffsets >= num_planes);
+ assert(nstrides >= num_planes);
+
+ fd_list = g_unix_fd_list_new();
+
+ for (num_fds = 0; num_fds < num_planes; num_fds++) {
+ int plane_fd = fds[num_fds];
+
+ if (plane_fd < 0) {
+ break;
+ }
+
+ fd_index[num_fds] = g_unix_fd_list_append(fd_list, plane_fd, &err);
+ if (fd_index[num_fds] < 0) {
+ error_report("Failed to setup dmabuf fdlist: %s", err->message);
+ return;
+ }
+ }
+
+ ddl_discard_display_messages(ddl);
+
+ x = qemu_dmabuf_get_x(dmabuf);
+ y = qemu_dmabuf_get_y(dmabuf);
+ width = qemu_dmabuf_get_width(dmabuf);
+ height = qemu_dmabuf_get_height(dmabuf);
+ fourcc = qemu_dmabuf_get_fourcc(dmabuf);
+ backing_width = qemu_dmabuf_get_backing_width(dmabuf);
+ backing_height = qemu_dmabuf_get_backing_height(dmabuf);
+ modifier = qemu_dmabuf_get_modifier(dmabuf);
+ y0_top = qemu_dmabuf_get_y0_top(dmabuf);
+
+ offset = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
+ offsets, num_planes, sizeof(uint32_t));
+ stride = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
+ strides, num_planes, sizeof(uint32_t));
+
+ for (i = 0; i < num_fds; i++) {
+ fd_handles[i] = g_variant_new_handle(fd_index[i]);
+ }
+ fd = g_variant_new_array(G_VARIANT_TYPE_HANDLE, fd_handles, num_fds);
+
+ qemu_dbus_display1_listener_unix_scanout_dmabuf2_call_scanout_dmabuf2(
+ ddl->scanout_dmabuf_v2_proxy, fd, x, y, width, height, offset, stride,
+ num_planes, fourcc, backing_width, backing_height, modifier, y0_top,
+ G_DBUS_CALL_FLAGS_NONE, -1, fd_list, NULL, NULL, NULL);
+}
+
+static void dbus_scanout_dmabuf(DisplayChangeListener *dcl,
+ QemuDmaBuf *dmabuf)
+{
+ DBusDisplayListener *ddl = container_of(dcl, DBusDisplayListener, dcl);
+
+ if (ddl->scanout_dmabuf_v2_proxy) {
+ dbus_scanout_dmabuf_v2(ddl, dmabuf);
+ } else {
+ if (qemu_dmabuf_get_num_planes(dmabuf) > 1) {
+ g_debug("org.qemu.Display1.Listener.ScanoutDMABUF "
+ "does not support mutli plane");
+ return;
+ }
+ dbus_scanout_dmabuf_v1(ddl, dmabuf);
+ }
+}
#endif /* GBM */
#endif /* OPENGL */
@@ -514,10 +595,6 @@ static void dbus_scanout_texture(DisplayChangeListener
*dcl,
error_report("%s: failed to export dmabuf for texture", __func__);
return;
}
- if (num_planes > 1) {
- error_report("%s: does not support multi-plane dmabuf", __func__);
- return;
- }
dmabuf = qemu_dmabuf_new(w, h, offset, stride, x, y, backing_width,
backing_height, fourcc, modifier, fd, num_planes,
false, backing_y_0_top);
@@ -886,6 +963,8 @@ dbus_display_listener_dispose(GObject *object)
#ifdef CONFIG_OPENGL
egl_fb_destroy(&ddl->fb);
#endif
+#else /* !WIN32 */
+ g_clear_object(&ddl->scanout_dmabuf_v2_proxy);
#endif
G_OBJECT_CLASS(dbus_display_listener_parent_class)->dispose(object);
@@ -1074,6 +1153,26 @@
dbus_display_listener_setup_shared_map(DBusDisplayListener *ddl)
#endif
}
+static void dbus_display_listener_setup_scanout_dmabuf_v2(DBusDisplayListener
*ddl)
+{
+#ifndef WIN32
+ g_autoptr(GError) err = NULL;
+
+ if (!dbus_display_listener_implements(
+ ddl, "org.qemu.Display1.Listener.Unix.ScanoutDMABUF2")) {
+ return;
+ }
+ ddl->scanout_dmabuf_v2_proxy =
+ qemu_dbus_display1_listener_unix_scanout_dmabuf2_proxy_new_sync(
+ ddl->conn, G_DBUS_PROXY_FLAGS_DO_NOT_AUTO_START, NULL,
+ "/org/qemu/Display1/Listener", NULL, &err);
+ if (!ddl->scanout_dmabuf_v2_proxy) {
+ g_debug("Failed to setup Unix scanout dmabuf v2 proxy: %s",
err->message);
+ return;
+ }
+#endif
+}
+
static GDBusMessage *
dbus_filter(GDBusConnection *connection,
GDBusMessage *message,
@@ -1162,6 +1261,7 @@ dbus_display_listener_new(const char *bus_name,
dbus_display_listener_setup_shared_map(ddl);
trace_dbus_can_share_map(ddl->can_share_map);
dbus_display_listener_setup_d3d11(ddl);
+ dbus_display_listener_setup_scanout_dmabuf_v2(ddl);
con =
qemu_console_lookup_by_index(dbus_display_console_get_index(console));
assert(con);
diff --git a/ui/dbus-display1.xml b/ui/dbus-display1.xml
index 72deefa455..4a41a7e0f3 100644
--- a/ui/dbus-display1.xml
+++ b/ui/dbus-display1.xml
@@ -614,6 +614,51 @@
</method>
</interface>
+ <!--
+ org.qemu.Display1.Listener.Unix.ScanoutDMABUF2:
+
+ This optional client-side interface can complement
+ org.qemu.Display1.Listener on ``/org/qemu/Display1/Listener`` for
+ Unix-specific DMABUF scanout setup which support multi plane.
+ -->
+ <?if $(env.HOST_OS) != windows?>
+ <interface name="org.qemu.Display1.Listener.Unix.ScanoutDMABUF2">
+ <!--
+ ScanoutDMABUF2:
+ @dmabuf: DMABUF file descriptor of each plane.
+ @x: display x offset, in pixels
+ @y: display y offset, in pixels
+ @width: display width, in pixels.
+ @height: display height, in pixels.
+ @offset: offset of each plane, in bytes.
+ @stride: stride of each plane, in bytes.
+ @num_planes: plane number.
+ @fourcc: DMABUF fourcc.
+ @backing_width: backing framebuffer width, in pixels
+ @backing_height: backing framebuffer height, in pixels
+ @modifier: DMABUF modifier.
+ @y0_top: whether Y position 0 is the top or not.
+
+ Resize and update the display content with DMABUF.
+ -->
+ <method name="ScanoutDMABUF2">
+ <arg type="ah" name="dmabuf" direction="in"/>
+ <arg type="u" name="x" direction="in"/>
+ <arg type="u" name="y" direction="in"/>
+ <arg type="u" name="width" direction="in"/>
+ <arg type="u" name="height" direction="in"/>
+ <arg type="au" name="offset" direction="in"/>
+ <arg type="au" name="stride" direction="in"/>
+ <arg type="u" name="num_planes" direction="in"/>
+ <arg type="u" name="fourcc" direction="in"/>
+ <arg type="u" name="backing_width" direction="in"/>
+ <arg type="u" name="backing_height" direction="in"/>
+ <arg type="t" name="modifier" direction="in"/>
+ <arg type="b" name="y0_top" direction="in"/>
+ </method>
+ </interface>
+ <?endif?>
+
<!--
org.qemu.Display1.Clipboard:
--
2.49.0
