console: add qemu display registry, add gtk

Add a registry for user interfaces.  Add qemu_display_init and
qemu_display_early_init helper functions for display initialization.

Hook up gtk ui as first user.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Message-id: 20180301100547.18962-2-kraxel@redhat.com

1 files changed, 34 insertions, 0 deletions

diff --git a/ui/console.c b/ui/console.c
index e22931a396..a11b120fc8 100644
--- a/ui/console.c
+++ b/ui/console.c
@@ -2180,6 +2180,40 @@ PixelFormat qemu_default_pixelformat(int bpp)
     return pf;
 }
 
+static QemuDisplay *dpys[DISPLAY_TYPE__MAX];
+
+void qemu_display_register(QemuDisplay *ui)
+{
+    assert(ui->type < DISPLAY_TYPE__MAX);
+    dpys[ui->type] = ui;
+}
+
+void qemu_display_early_init(DisplayOptions *opts)
+{
+    assert(opts->type < DISPLAY_TYPE__MAX);
+    if (opts->type == DISPLAY_TYPE_NONE) {
+        return;
+    }
+    if (dpys[opts->type] == NULL) {
+        error_report("Display '%s' is not available.",
+                     DisplayType_lookup.array[opts->type]);
+        exit(1);
+    }
+    if (dpys[opts->type]->early_init) {
+        dpys[opts->type]->early_init(opts);
+    }
+}
+
+void qemu_display_init(DisplayState *ds, DisplayOptions *opts)
+{
+    assert(opts->type < DISPLAY_TYPE__MAX);
+    if (opts->type == DISPLAY_TYPE_NONE) {
+        return;
+    }
+    assert(dpys[opts->type] != NULL);
+    dpys[opts->type]->init(ds, opts);
+}
+
 void qemu_chr_parse_vc(QemuOpts *opts, ChardevBackend *backend, Error **errp)
 {
     int val;