ui: build curses, gtk and sdl as modules.

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Merge remote-tracking branch 'remotes/kraxel/tags/ui-20180305-pull-request' into staging

ui: build curses, gtk and sdl as modules.

# gpg: Signature made Mon 05 Mar 2018 08:48:24 GMT
# gpg:                using RSA key 4CB6D8EED3E87138
# gpg: Good signature from "Gerd Hoffmann (work) <kraxel@redhat.com>"
# gpg:                 aka "Gerd Hoffmann <gerd@kraxel.org>"
# gpg:                 aka "Gerd Hoffmann (private) <kraxel@gmail.com>"
# Primary key fingerprint: A032 8CFF B93A 17A7 9901  FE7D 4CB6 D8EE D3E8 7138

* remotes/kraxel/tags/ui-20180305-pull-request:
  ui/sdl: build as module
  audio: rename CONFIG_* to CONFIG_AUDIO_*
  ui/curses: build as module
  ui/gtk: build as module
  configure: opengl doesn't depend on x11
  configure: add X11 vars to config-host.mak
  console: add ui module loading support
  console: add and use qemu_display_find_default
  egl-headless: switch over to new display registry
  curses: switch over to new display registry
  cocoa: switch over to new display registry
  sdl: switch over to new display registry
  console: add qemu display registry, add gtk

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

ui/Makefile.objs

@@ -11,14 +11,16 @@ common-obj-y += keymaps.o console.o cursor.o qemu-pixman.o
 common-obj-y += input.o input-keymap.o input-legacy.o
 common-obj-$(CONFIG_LINUX) += input-linux.o
 common-obj-$(CONFIG_SPICE) += spice-core.o spice-input.o spice-display.o
-common-obj-$(CONFIG_SDL) += sdl.mo
 common-obj-$(CONFIG_COCOA) += cocoa.o
-common-obj-$(CONFIG_CURSES) += curses.o
 common-obj-$(CONFIG_VNC) += $(vnc-obj-y)
 common-obj-$(call lnot,$(CONFIG_VNC)) += vnc-stubs.o
-common-obj-$(CONFIG_GTK) += gtk.o
-common-obj-$(if $(CONFIG_WIN32),n,$(if $(CONFIG_SDL),y,$(CONFIG_GTK))) += x_keymap.o
 
+common-obj-$(CONFIG_X11) += x_keymap.o
+x_keymap.o-cflags := $(X11_CFLAGS)
+x_keymap.o-libs := $(X11_LIBS)
+
+# ui-sdl module
+common-obj-$(CONFIG_SDL) += sdl.mo
 ifeq ($(CONFIG_SDLABI),1.2)
 sdl.mo-objs := sdl.o sdl_zoom.o
 endif
@@ -31,6 +33,17 @@ endif
 sdl.mo-cflags := $(SDL_CFLAGS)
 sdl.mo-libs := $(SDL_LIBS)
 
+# ui-gtk module
+common-obj-$(CONFIG_GTK) += gtk.mo
+gtk.mo-objs := gtk.o
+gtk.mo-cflags := $(GTK_CFLAGS) $(VTE_CFLAGS)
+gtk.mo-libs := $(GTK_LIBS) $(VTE_LIBS)
+
+common-obj-$(CONFIG_CURSES) += curses.mo
+curses.mo-objs := curses.o
+curses.mo-cflags := $(CURSES_CFLAGS)
+curses.mo-libs := $(CURSES_LIBS)
+
 ifeq ($(CONFIG_OPENGL),y)
 common-obj-y += shader.o
 common-obj-y += console-gl.o
@@ -38,17 +51,13 @@ common-obj-y += egl-helpers.o
 common-obj-y += egl-context.o
 common-obj-$(CONFIG_OPENGL_DMABUF) += egl-headless.o
 ifeq ($(CONFIG_GTK_GL),y)
-common-obj-$(CONFIG_GTK) += gtk-gl-area.o
+gtk.mo-objs += gtk-gl-area.o
 else
-common-obj-$(CONFIG_GTK) += gtk-egl.o
+gtk.mo-objs += gtk-egl.o
+gtk.mo-libs += $(OPENGL_LIBS)
 endif
 endif
 
-gtk.o-cflags := $(GTK_CFLAGS) $(VTE_CFLAGS)
-gtk-egl.o-cflags := $(GTK_CFLAGS) $(VTE_CFLAGS)
-gtk-gl-area.o-cflags := $(GTK_CFLAGS) $(VTE_CFLAGS)
-
-gtk-egl.o-libs += $(OPENGL_LIBS)
 shader.o-libs += $(OPENGL_LIBS)
 console-gl.o-libs += $(OPENGL_LIBS)
 egl-helpers.o-libs += $(OPENGL_LIBS)

ui/cocoa.m

@@ -1683,7 +1683,7 @@ static void addRemovableDevicesMenuItems(void)
     qapi_free_BlockInfoList(pointerToFree);
 }
 
-void cocoa_display_init(DisplayState *ds, DisplayOptions *opts)
+static void cocoa_display_init(DisplayState *ds, DisplayOptions *opts)
 {
     COCOA_DEBUG("qemu_cocoa: cocoa_display_init\n");
 
@@ -1713,3 +1713,15 @@ void cocoa_display_init(DisplayState *ds, DisplayOptions *opts)
      */
     addRemovableDevicesMenuItems();
 }
+
+static QemuDisplay qemu_display_cocoa = {
+    .type       = DISPLAY_TYPE_COCOA,
+    .init       = cocoa_display_init,
+};
+
+static void register_cocoa(void)
+{
+    qemu_display_register(&qemu_display_cocoa);
+}
+
+type_init(register_cocoa);

ui/console.c

@@ -2180,6 +2180,65 @@ 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;
+}
+
+bool qemu_display_find_default(DisplayOptions *opts)
+{
+    static DisplayType prio[] = {
+        DISPLAY_TYPE_GTK,
+        DISPLAY_TYPE_SDL,
+        DISPLAY_TYPE_COCOA
+    };
+    int i;
+
+    for (i = 0; i < ARRAY_SIZE(prio); i++) {
+        if (dpys[prio[i]] == NULL) {
+            ui_module_load_one(DisplayType_lookup.array[prio[i]]);
+        }
+        if (dpys[prio[i]] == NULL) {
+            continue;
+        }
+        opts->type = prio[i];
+        return true;
+    }
+    return false;
+}
+
+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) {
+        ui_module_load_one(DisplayType_lookup.array[opts->type]);
+    }
+    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;

ui/curses.c

@@ -435,7 +435,7 @@ static const DisplayChangeListenerOps dcl_ops = {
     .dpy_text_cursor = curses_cursor_position,
 };
 
-void curses_display_init(DisplayState *ds, DisplayOptions *opts)
+static void curses_display_init(DisplayState *ds, DisplayOptions *opts)
 {
 #ifndef _WIN32
     if (!isatty(1)) {
@@ -456,3 +456,15 @@ void curses_display_init(DisplayState *ds, DisplayOptions *opts)
 
     invalidate = 1;
 }
+
+static QemuDisplay qemu_display_curses = {
+    .type       = DISPLAY_TYPE_CURSES,
+    .init       = curses_display_init,
+};
+
+static void register_curses(void)
+{
+    qemu_display_register(&qemu_display_curses);
+}
+
+type_init(register_curses);

ui/egl-headless.c

@@ -164,7 +164,12 @@ static const DisplayChangeListenerOps egl_ops = {
     .dpy_gl_update           = egl_scanout_flush,
 };
 
-void egl_headless_init(DisplayOptions *opts)
+static void early_egl_headless_init(DisplayOptions *opts)
+{
+    display_opengl = 1;
+}
+
+static void egl_headless_init(DisplayState *ds, DisplayOptions *opts)
 {
     QemuConsole *con;
     egl_dpy *edpy;
@@ -188,3 +193,16 @@ void egl_headless_init(DisplayOptions *opts)
         register_displaychangelistener(&edpy->dcl);
     }
 }
+
+static QemuDisplay qemu_display_egl = {
+    .type       = DISPLAY_TYPE_EGL_HEADLESS,
+    .early_init = early_egl_headless_init,
+    .init       = egl_headless_init,
+};
+
+static void register_egl(void)
+{
+    qemu_display_register(&qemu_display_egl);
+}
+
+type_init(register_egl);

ui/gtk.c

@@ -2297,7 +2297,7 @@ static void gd_create_menus(GtkDisplayState *s)
 
 static gboolean gtkinit;
 
-void gtk_display_init(DisplayState *ds, DisplayOptions *opts)
+static void gtk_display_init(DisplayState *ds, DisplayOptions *opts)
 {
     VirtualConsole *vc;
 
@@ -2407,7 +2407,7 @@ void gtk_display_init(DisplayState *ds, DisplayOptions *opts)
     }
 }
 
-void early_gtk_display_init(DisplayOptions *opts)
+static void early_gtk_display_init(DisplayOptions *opts)
 {
     /* The QEMU code relies on the assumption that it's always run in
      * the C locale. Therefore it is not prepared to deal with
@@ -2450,3 +2450,16 @@ void early_gtk_display_init(DisplayOptions *opts)
     type_register(&char_gd_vc_type_info);
 #endif
 }
+
+static QemuDisplay qemu_display_gtk = {
+    .type       = DISPLAY_TYPE_GTK,
+    .early_init = early_gtk_display_init,
+    .init       = gtk_display_init,
+};
+
+static void register_gtk(void)
+{
+    qemu_display_register(&qemu_display_gtk);
+}
+
+type_init(register_gtk);

ui/sdl.c

@@ -901,17 +901,7 @@ static const DisplayChangeListenerOps dcl_ops = {
     .dpy_cursor_define    = sdl_mouse_define,
 };
 
-void sdl_display_early_init(DisplayOptions *opts)
-{
-    if (opts->has_gl && opts->gl) {
-        fprintf(stderr,
-                "SDL1 display code has no opengl support.\n"
-                "Please recompile qemu with SDL2, using\n"
-                "./configure --enable-sdl --with-sdlabi=2.0\n");
-    }
-}
-
-void sdl_display_init(DisplayState *ds, DisplayOptions *o)
+static void sdl1_display_init(DisplayState *ds, DisplayOptions *o)
 {
     int flags;
     uint8_t data = 0;
@@ -1023,3 +1013,15 @@ void sdl_display_init(DisplayState *ds, DisplayOptions *o)
 
     atexit(sdl_cleanup);
 }
+
+static QemuDisplay qemu_display_sdl1 = {
+    .type       = DISPLAY_TYPE_SDL,
+    .init       = sdl1_display_init,
+};
+
+static void register_sdl1(void)
+{
+    qemu_display_register(&qemu_display_sdl1);
+}
+
+type_init(register_sdl1);

ui/sdl2.c

@@ -751,7 +751,7 @@ static const DisplayChangeListenerOps dcl_gl_ops = {
 };
 #endif
 
-void sdl_display_early_init(DisplayOptions *o)
+static void sdl2_display_early_init(DisplayOptions *o)
 {
     assert(o->type == DISPLAY_TYPE_SDL);
     if (o->has_gl && o->gl) {
@@ -761,7 +761,7 @@ void sdl_display_early_init(DisplayOptions *o)
     }
 }
 
-void sdl_display_init(DisplayState *ds, DisplayOptions *o)
+static void sdl2_display_init(DisplayState *ds, DisplayOptions *o)
 {
     int flags;
     uint8_t data = 0;
@@ -861,3 +861,16 @@ void sdl_display_init(DisplayState *ds, DisplayOptions *o)
 
     atexit(sdl_cleanup);
 }
+
+static QemuDisplay qemu_display_sdl2 = {
+    .type       = DISPLAY_TYPE_SDL,
+    .early_init = sdl2_display_early_init,
+    .init       = sdl2_display_init,
+};
+
+static void register_sdl1(void)
+{
+    qemu_display_register(&qemu_display_sdl2);
+}
+
+type_init(register_sdl1);