From 5ee1718f92bd82e0e581191b6326384d291199d3 Mon Sep 17 00:00:00 2001
From: Gerd Hoffmann <kraxel@redhat.com>
Date: Thu, 1 Mar 2018 11:05:36 +0100
Subject: [PATCH] sdl: switch over to new display registry

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Message-id: 20180301100547.18962-3-kraxel@redhat.com
---
 include/ui/console.h | 19 -------------------
 ui/sdl.c             | 24 +++++++++++++-----------
 ui/sdl2.c            | 17 +++++++++++++++--
 vl.c                 | 15 +--------------
 4 files changed, 29 insertions(+), 46 deletions(-)

diff --git a/include/ui/console.h b/include/ui/console.h
index 817f9b9bcc..cb86e6a0dd 100644
--- a/include/ui/console.h
+++ b/include/ui/console.h
@@ -444,25 +444,6 @@ void qemu_display_register(QemuDisplay *ui);
 void qemu_display_early_init(DisplayOptions *opts);
 void qemu_display_init(DisplayState *ds, DisplayOptions *opts);
 
-/* sdl.c */
-#ifdef CONFIG_SDL
-void sdl_display_early_init(DisplayOptions *opts);
-void sdl_display_init(DisplayState *ds, DisplayOptions *opts);
-#else
-static inline void sdl_display_early_init(DisplayOptions *opts)
-{
-    /* This must never be called if CONFIG_SDL is disabled */
-    error_report("SDL support is disabled");
-    abort();
-}
-static inline void sdl_display_init(DisplayState *ds, DisplayOptions *opts)
-{
-    /* This must never be called if CONFIG_SDL is disabled */
-    error_report("SDL support is disabled");
-    abort();
-}
-#endif
-
 /* cocoa.m */
 #ifdef CONFIG_COCOA
 void cocoa_display_init(DisplayState *ds, DisplayOptions *opts);
diff --git a/ui/sdl.c b/ui/sdl.c
index c4ae7ab05d..a5fd503c25 100644
--- a/ui/sdl.c
+++ b/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);
diff --git a/ui/sdl2.c b/ui/sdl2.c
index b5a0fa1d13..83b917fa37 100644
--- a/ui/sdl2.c
+++ b/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);
diff --git a/vl.c b/vl.c
index a84b1372b8..5b2410d564 100644
--- a/vl.c
+++ b/vl.c
@@ -2092,7 +2092,6 @@ static void parse_display(const char *p)
     const char *opts;
 
     if (strstart(p, "sdl", &opts)) {
-#ifdef CONFIG_SDL
         dpy.type = DISPLAY_TYPE_SDL;
         while (*opts) {
             const char *nextopt;
@@ -2153,10 +2152,6 @@ static void parse_display(const char *p)
             }
             opts = nextopt;
         }
-#else
-        error_report("SDL support is disabled");
-        exit(1);
-#endif
     } else if (strstart(p, "vnc", &opts)) {
         if (*opts == '=') {
             vnc_parse(opts + 1, &error_fatal);
@@ -4340,12 +4335,7 @@ int main(int argc, char **argv, char **envp)
                      "ignoring option");
     }
 
-    if (dpy.type == DISPLAY_TYPE_SDL) {
-        sdl_display_early_init(&dpy);
-    } else {
-        qemu_display_early_init(&dpy);
-    }
-
+    qemu_display_early_init(&dpy);
     qemu_console_early_init();
 
     if (dpy.has_gl && dpy.gl && display_opengl == 0) {
@@ -4677,9 +4667,6 @@ int main(int argc, char **argv, char **envp)
     case DISPLAY_TYPE_CURSES:
         curses_display_init(ds, &dpy);
         break;
-    case DISPLAY_TYPE_SDL:
-        sdl_display_init(ds, &dpy);
-        break;
     case DISPLAY_TYPE_COCOA:
         cocoa_display_init(ds, &dpy);
         break;